US20050210796A1 - Formwork component - Google Patents
Formwork component Download PDFInfo
- Publication number
- US20050210796A1 US20050210796A1 US11/088,497 US8849705A US2005210796A1 US 20050210796 A1 US20050210796 A1 US 20050210796A1 US 8849705 A US8849705 A US 8849705A US 2005210796 A1 US2005210796 A1 US 2005210796A1
- Authority
- US
- United States
- Prior art keywords
- board
- formwork
- thermoplastic element
- girder
- component according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G9/05—Forming boards or similar elements the form surface being of plastics
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/562—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using extra joining elements, i.e. which are not integral with the parts to be joined
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/562—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using extra joining elements, i.e. which are not integral with the parts to be joined
- B29C65/564—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits using extra joining elements, i.e. which are not integral with the parts to be joined hidden in the joint, e.g. dowels or Z-pins
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
- B29C65/60—Riveting or staking
- B29C65/606—Riveting or staking the rivets being integral with one of the parts to be joined, i.e. staking
- B29C65/607—Riveting or staking the rivets being integral with one of the parts to be joined, i.e. staking the integral rivets being hollow
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/304—Joining through openings in an intermediate part of the article
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
- B29C66/472—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially flat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
- B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
- B29C66/474—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-flat
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
- B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/748—Joining plastics material to non-plastics material to natural products or their composites, not provided for in groups B29C66/742 - B29C66/746
- B29C66/7487—Wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/04—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using preformed elements
- B29C73/06—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using preformed elements using plugs sealing in the hole
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G9/04—Forming boards or similar elements the form surface being of wood
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G9/00—Forming or shuttering elements for general use
- E04G9/10—Forming or shuttering elements for general use with additional peculiarities such as surface shaping, insulating or heating, permeability to water or air
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0009—Cutting out
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2793/00—Shaping techniques involving a cutting or machining operation
- B29C2793/0081—Shaping techniques involving a cutting or machining operation before shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
- B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
- B29K2711/14—Wood, e.g. woodboard or fibreboard
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/737—Articles provided with holes, e.g. grids, sieves
Definitions
- the invention relates to a formwork component (form) with at least one wooden or synthetic formwork board.
- forms In the construction industry, a variety of forms is used to encase an area which is to be poured with concrete, such as a wall or a roof.
- the forms may be, for example, a plurality of formwork boards which are positioned horizontally close together, so that, after a containment border is assembled, a ceiling can be poured.
- forms that comprise at least one board and a substructure, in the form of one or more girders or square timbers, or a frame, for example. Such structures may be stored, transported, and deployed as integral forms, traditionally by binding them solidly together with the frames or girders.
- Methods are also known to repair damage, such as dents or holes to formwork boards.
- the board is normally milled, and a repair disk is placed in the milled section. This can be achieved by gluing, clamping, nailing, or screwing the disk in place.
- the methods described, both to fix a board to one or more girders, and to repair a board involve a long processing time, a short life span of the joint, inadequate surface flatness and smoothness, and inadequate corrosion resistance. Furthermore, re-treatment of the joint is commonly needed.
- WO 98/42988 is an appropriate joining element as well as a method to fix the joining elements in a material with pores or cavities.
- a closed-end bore is located in the elements to be joined, and a joiner pin is placed in the bore. Energy is targetedly applied to the joiner pin so that it plasticizes and macroscopic bonds are formed in the elements to be joined.
- the object of the invention is to provide a form with improvements, as regards its connection to a substructure and/or repair, in at least one of the following features: processing time, detachability, durability, surface flatness, surface smoothness, required re-treatment, corrosion resistance.
- this formwork component comprises at least one wooden and/or synthetic formwork board. At least one thermoplastic element is also provided, which is set in the board and bonded to the wood and/or synthetic material of the board and/or girder.
- girder in the sense of the present application refers to any load-carrying or load-supporting component or a component to be connected to the board in any other manner. For example, square timbers and the like can also be used for this purpose.
- the thermoplastic element for joining the formwork board to a girder can be in the form of a dowel or some kind of stud, as described in detail below.
- the thermoplastic element can be a repair insert or a film to attach a repair insert.
- the board can be made of wood or synthetic material. It is also possible for the board to comprise a wooden core coated at least in part with a synthetic material. The material combinations described above apply also to a girder to which the board is to be attached. The attachment and/or repair can be carried out in extremely short periods of time in all embodiments.
- the board may be pre-bored so that the thermoplastic element can be inserted.
- the girder When attaching a girder to the board, the girder does not have to be pre-bored, although it may be preferable for the girder to be pre-bored as well.
- the thermoplastic element may be, for example, inserted in the bore or milled section of the board, and then bonded with the board and/or girder.
- Ultrasound may be used to bond the thermoplastic element. This leads to at least a partial plasticization on the thermoplastic element, so that the plasticized material thereof at least partially infiltrates pores and/or small cavities in the material of the board and/or girder.
- the thermoplastic element solidifies (hardens) and is thus bonded with the material of the board and/or girder. This is a solid bond and provides for a durable attachment between a board and girder.
- the thermoplastic element may be utilized in this way to durably bond a repair insert to the board. This also applies to situations in which the thermoplastic element is in itself a repair insert.
- the thermoplastic element may be inserted in the board in any practical manner, it is currently preferable that the board comprises a bore and/or milled section in which the thermoplastic element can be inserted.
- the bore and/or milled section may be a through-hole section such that an appropriate thermoplastic element may be inserted all the way through the through-hole section of the board, and further into a substructure such as a girder, and there bonded by means of the method described above.
- thermoplastic element In order to further develop the bond after hardening has taken place, many methods are possible. It is currently preferable, however, to press the thermoplastic element in utilizing ultrasound. WO 98/42988 is again a reference for details in this method.
- thermoplastic element is advantageously a bonding element.
- thermoplastic element may be advantageously in the form of a dowel to attach the board to the girder.
- the dowel comprises at least one step along its length, so that the described bond is supported, at at least one step, by a positive joint with a complementary step in the board and/or girder.
- thermoplastic element may be a repair insert.
- the thermoplastic element when a damaged section of the board is suitably milled, the thermoplastic element is inserted as a repair insert, and plasticized with, for example, ultrasound, so that the described bond is formed.
- thermoplastic element has been designed to align with the surface of the board.
- a continuously flat and smooth surface may be guaranteed without re-treatment, so that an equally smooth concrete surface may be formed in an advantageous manner.
- thermoplastic element is in the form of a film, in other words, an extremely thin disk.
- the thermoplastic element of this embodiment can be used to secure other elements in that it is, once again, supplied with energy such as ultrasound, and is bonded to the wood and/or synthetic material of the board and/or girder as well as to the material of the aforementioned other element.
- thermoplastic element of this embodiment may be attached to a repair insert which is aligned with the surface of the board.
- This attachment can, preferably concurrently with the attachment to the board, also be achieved with the plasticization and subsequent solidification described above. In this manner, minimal effort is necessary to achieve the above-mentioned advantages during repair of a formwork component.
- FIG. 1 is a perspective exploded view of a first embodiment of the invention.
- FIG. 2 is a perspective exploded view of a second embodiment of the invention.
- FIG. 1 shows in a perspective exploded view a cutaway of a formwork component 10 which, in this case, comprises a girder 12 , a board 14 , and a thermoplastic element 16 .
- the girder comprises in this case a base 18 and two braces 20 .
- the shown girder 12 is just one example.
- the shown girder 12 may be exchanged for any desired load-bearing or supporting member, which is to be attached to the board 14 .
- Square timbers are just one example.
- the board 14 comprises in the shown example a stepped through-hole 22 .
- the brace 20 of the girder 12 is not pre-bored in the shown embodiment; however, it could be pre-bored.
- the dowel 16 is largely cylindrical and comprises a first step 24 in the upper region which compliments the step in the bore 22 . An advantageous positive fit is achieved by overlaying the wide section of the step 24 on the step in the board 14 .
- the dowel 16 comprises, in addition, a further step 26 on the end to be inserted in the brace 20 of the girder 12 , said step having an area 28 of a relatively small diameter formed on the free end. It is noted that the dowel 16 in FIG.
- end of the dowel 16 which is to be inserted in the brace 20 of the girder 12 may comprise a plurality of steps and/or a pointed end to ease pressing into the brace 20 of the girder 12 .
- the described bore 22 is machined into the board 14 , and the dowel 16 is then inserted through the bore 22 while being subjected to ultrasound so that it infiltrates the material of the brace 20 of the girder 12 .
- the thermoplastic dowel 16 Due to the application of ultrasound, the thermoplastic dowel 16 is plasticized at least in part, so that material thereof infiltrates cavities and imperfections in the board and/or girder which may be made of wood and/or synthetic material, thus forming a bond after solidification therein.
- the board 14 is secured to the girder 12 . This attachment can be formed on further points and/or with further girders.
- FIG. 2 schematically shows a second embodiment in which the thermoplastic element is a repair insert 30 , which is inserted in a milled section 32 of the board 14 .
- the milled section 32 or any indentation, is drilled or milled into the board 14 .
- the form of the repair insert 30 is complimentary to the form of the milled section 32 , so that it ( 30 ) may be inserted therein ( 32 ).
- the repair insert 30 is then, as described above, subjected to energy such as through ultrasound so that it is at least partially plasticized and its material infiltrates the wood or synthetic material of the board 14 , and then forms a bond therein after solidification.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Moulds, Cores, Or Mandrels (AREA)
Abstract
Description
- The invention relates to a formwork component (form) with at least one wooden or synthetic formwork board.
- In the construction industry, a variety of forms is used to encase an area which is to be poured with concrete, such as a wall or a roof. In the case of formwork for ceilings, the forms may be, for example, a plurality of formwork boards which are positioned horizontally close together, so that, after a containment border is assembled, a ceiling can be poured. There further exist forms that comprise at least one board and a substructure, in the form of one or more girders or square timbers, or a frame, for example. Such structures may be stored, transported, and deployed as integral forms, traditionally by binding them solidly together with the frames or girders.
- It is known to attach formwork boards to a substructure, such as several girders, by nails, clamps, or screws. The screws can be screwed into the board from either the reverse side or, alternatively, the front side, with the heads counter-sunk and the surface evenly filled in. It is also known that a form can be glued to a girder.
- Methods are also known to repair damage, such as dents or holes to formwork boards. Here, the board is normally milled, and a repair disk is placed in the milled section. This can be achieved by gluing, clamping, nailing, or screwing the disk in place. The methods described, both to fix a board to one or more girders, and to repair a board, involve a long processing time, a short life span of the joint, inadequate surface flatness and smoothness, and inadequate corrosion resistance. Furthermore, re-treatment of the joint is commonly needed.
- Known from WO 98/42988 is an appropriate joining element as well as a method to fix the joining elements in a material with pores or cavities. A closed-end bore is located in the elements to be joined, and a joiner pin is placed in the bore. Energy is targetedly applied to the joiner pin so that it plasticizes and macroscopic bonds are formed in the elements to be joined.
- The object of the invention is to provide a form with improvements, as regards its connection to a substructure and/or repair, in at least one of the following features: processing time, detachability, durability, surface flatness, surface smoothness, required re-treatment, corrosion resistance.
- The solution to this problem is the formwork component described in claim 1.
- In accordance therewith, this formwork component comprises at least one wooden and/or synthetic formwork board. At least one thermoplastic element is also provided, which is set in the board and bonded to the wood and/or synthetic material of the board and/or girder. It should be noted in this regard that girder in the sense of the present application refers to any load-carrying or load-supporting component or a component to be connected to the board in any other manner. For example, square timbers and the like can also be used for this purpose.
- The thermoplastic element for joining the formwork board to a girder can be in the form of a dowel or some kind of stud, as described in detail below. Alternatively, the thermoplastic element can be a repair insert or a film to attach a repair insert. As noted, the board can be made of wood or synthetic material. It is also possible for the board to comprise a wooden core coated at least in part with a synthetic material. The material combinations described above apply also to a girder to which the board is to be attached. The attachment and/or repair can be carried out in extremely short periods of time in all embodiments. For this purpose, the board may be pre-bored so that the thermoplastic element can be inserted. When attaching a girder to the board, the girder does not have to be pre-bored, although it may be preferable for the girder to be pre-bored as well. The thermoplastic element may be, for example, inserted in the bore or milled section of the board, and then bonded with the board and/or girder.
- Ultrasound may be used to bond the thermoplastic element. This leads to at least a partial plasticization on the thermoplastic element, so that the plasticized material thereof at least partially infiltrates pores and/or small cavities in the material of the board and/or girder. When the energy is no longer applied, i.e., for example, the ultrasound application ceases, the thermoplastic element solidifies (hardens) and is thus bonded with the material of the board and/or girder. This is a solid bond and provides for a durable attachment between a board and girder. Furthermore, the thermoplastic element may be utilized in this way to durably bond a repair insert to the board. This also applies to situations in which the thermoplastic element is in itself a repair insert.
- Tests have shown that the described method leads to extremely short processing times. Further, a flat and smooth surface may be achieved through a suitable configuration of the thermoplastic element, in which the surface of the latter is aligned with the surface of the board. No re-treatment is necessary with this method, and the bond described leads to impermeability. Ultimately, no elements are made of metal, such as the known clamps, nails or screws, so that the inventive formwork component is less corrodible. It is further noted that especially in the embodiment in which a board is bonded with a girder, detachability can be ensured to advantage. The procedure according to the above-mentioned WO 98/42988, incorporated herein by reference, may be chosen with respect to the method described.
- Preferable embodiments of the inventive formwork component are described in the remaining claims.
- Although the thermoplastic element may be inserted in the board in any practical manner, it is currently preferable that the board comprises a bore and/or milled section in which the thermoplastic element can be inserted. The bore and/or milled section may be a through-hole section such that an appropriate thermoplastic element may be inserted all the way through the through-hole section of the board, and further into a substructure such as a girder, and there bonded by means of the method described above.
- Tests have shown that a stepped-bore is optimal, in combination with a suitably reverse-stepped thermoplastic element, to form a positive joint.
- To plasticize the thermoplastic element in order to further develop the bond after hardening has taken place, many methods are possible. It is currently preferable, however, to press the thermoplastic element in utilizing ultrasound. WO 98/42988 is again a reference for details in this method.
- In the preferred embodiment in which a board is attached to at least one girder, the thermoplastic element is advantageously a bonding element.
- In particular, the thermoplastic element may be advantageously in the form of a dowel to attach the board to the girder.
- In this case, it has also proven to be advantageous to form the dowel with regions of varying diameters. In other words, the dowel comprises at least one step along its length, so that the described bond is supported, at at least one step, by a positive joint with a complementary step in the board and/or girder.
- In another embodiment, the thermoplastic element may be a repair insert. In other words, when a damaged section of the board is suitably milled, the thermoplastic element is inserted as a repair insert, and plasticized with, for example, ultrasound, so that the described bond is formed. The advantages described above are also applicable here.
- In practice, positive results have also been obtained when the thermoplastic element has been designed to align with the surface of the board. Through this, a continuously flat and smooth surface may be guaranteed without re-treatment, so that an equally smooth concrete surface may be formed in an advantageous manner.
- Another preferable embodiment is currently one in which the thermoplastic element is in the form of a film, in other words, an extremely thin disk. The thermoplastic element of this embodiment can be used to secure other elements in that it is, once again, supplied with energy such as ultrasound, and is bonded to the wood and/or synthetic material of the board and/or girder as well as to the material of the aforementioned other element.
- In particular, the thermoplastic element of this embodiment may be attached to a repair insert which is aligned with the surface of the board. This attachment can, preferably concurrently with the attachment to the board, also be achieved with the plasticization and subsequent solidification described above. In this manner, minimal effort is necessary to achieve the above-mentioned advantages during repair of a formwork component.
- The invention will now be described in more detail with reference to the embodiments of the invention as shown in the Figures, in which:
-
FIG. 1 is a perspective exploded view of a first embodiment of the invention; and -
FIG. 2 is a perspective exploded view of a second embodiment of the invention. -
FIG. 1 shows in a perspective exploded view a cutaway of aformwork component 10 which, in this case, comprises agirder 12, aboard 14, and athermoplastic element 16. The girder comprises in this case abase 18 and twobraces 20. It is again noted that the showngirder 12 is just one example. In particular, the showngirder 12 may be exchanged for any desired load-bearing or supporting member, which is to be attached to theboard 14. Square timbers are just one example. To attach theboard 14 to one of thebraces 20, theboard 14 comprises in the shown example a stepped through-hole 22. Thebrace 20 of thegirder 12 is not pre-bored in the shown embodiment; however, it could be pre-bored. Thedowel 16 is largely cylindrical and comprises afirst step 24 in the upper region which compliments the step in thebore 22. An advantageous positive fit is achieved by overlaying the wide section of thestep 24 on the step in theboard 14. As seen inFIG. 1 , thedowel 16 comprises, in addition, afurther step 26 on the end to be inserted in thebrace 20 of thegirder 12, said step having anarea 28 of a relatively small diameter formed on the free end. It is noted that thedowel 16 inFIG. 1 is only schematically shown, and that the end of thedowel 16 which is to be inserted in thebrace 20 of thegirder 12 may comprise a plurality of steps and/or a pointed end to ease pressing into thebrace 20 of thegirder 12. - In the method for producing the
inventive formwork component 10, the described bore 22 is machined into theboard 14, and thedowel 16 is then inserted through thebore 22 while being subjected to ultrasound so that it infiltrates the material of thebrace 20 of thegirder 12. Due to the application of ultrasound, thethermoplastic dowel 16 is plasticized at least in part, so that material thereof infiltrates cavities and imperfections in the board and/or girder which may be made of wood and/or synthetic material, thus forming a bond after solidification therein. Through this, theboard 14 is secured to thegirder 12. This attachment can be formed on further points and/or with further girders. -
FIG. 2 schematically shows a second embodiment in which the thermoplastic element is arepair insert 30, which is inserted in a milledsection 32 of theboard 14. For this purpose, the milledsection 32, or any indentation, is drilled or milled into theboard 14. The form of therepair insert 30 is complimentary to the form of the milledsection 32, so that it (30) may be inserted therein (32). Therepair insert 30 is then, as described above, subjected to energy such as through ultrasound so that it is at least partially plasticized and its material infiltrates the wood or synthetic material of theboard 14, and then forms a bond therein after solidification.
Claims (15)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004014944A DE102004014944A1 (en) | 2004-03-26 | 2004-03-26 | formwork component |
DE102004014944.5 | 2004-03-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050210796A1 true US20050210796A1 (en) | 2005-09-29 |
Family
ID=34854074
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/088,497 Abandoned US20050210796A1 (en) | 2004-03-26 | 2005-03-24 | Formwork component |
Country Status (4)
Country | Link |
---|---|
US (1) | US20050210796A1 (en) |
EP (1) | EP1580348A3 (en) |
DE (1) | DE102004014944A1 (en) |
RU (1) | RU2005108493A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2789769A1 (en) | 2013-04-12 | 2014-10-15 | ULMA C y E, S. COOP. | Repairing element adapted to be fixed to a housing of a formwork board, repairing method of a formwork board and repaired formwork board |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102006021193B3 (en) * | 2006-05-06 | 2007-11-15 | Peri Gmbh | Rivet or screw head for concrete formwork |
DE102011016120B4 (en) * | 2011-04-05 | 2013-05-29 | Redima Ag | Formwork skin attachment of a formwork skin of a concrete formwork element |
RU2637253C2 (en) * | 2015-03-25 | 2017-12-01 | Ильдар Гаязович Кильдебаев | Method of repair the items from thermoplastic materials |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5118454A (en) * | 1991-05-02 | 1992-06-02 | Davidson Textron Inc. | Method for repairing voids in vinyl skin covered urethane foam products |
US5437750A (en) * | 1994-04-08 | 1995-08-01 | Fokker Special Products B.V. | Method for securing a thermoplastic insert |
US5632923A (en) * | 1994-04-28 | 1997-05-27 | Hayakawa; Yoshiyuki | Concrete molding form member |
US6632863B2 (en) * | 2001-10-25 | 2003-10-14 | Crane Plastics Company Llc | Cellulose/polyolefin composite pellet |
US20040056172A1 (en) * | 2000-12-12 | 2004-03-25 | Ezio Sedran | Modular elements for formworks |
US6786989B2 (en) * | 2000-05-26 | 2004-09-07 | Woodwelding Ag | Sealing |
US6913666B1 (en) * | 1997-03-21 | 2005-07-05 | Woodwelding Ag | Process for anchoring connecting elements in a material with pores or cavities and connecting elements therefor |
US20060032172A1 (en) * | 2002-10-18 | 2006-02-16 | Foell David S | Concrete fillable formwork wall |
US7160405B2 (en) * | 1999-06-18 | 2007-01-09 | Woodwelding Ag | Integral joining |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB874172A (en) * | 1956-09-18 | 1961-08-02 | Rapid Metal Developments Ltd | Improvements relating to shuttering panels for casting concrete |
CH367971A (en) * | 1959-06-15 | 1963-03-15 | Helfenstein Karl | Formwork board |
JPH06254825A (en) * | 1993-03-03 | 1994-09-13 | Sumitomo Chem Co Ltd | Water-permeable concrete frame |
DE19856215B4 (en) * | 1998-12-05 | 2015-10-01 | Max Frank Gmbh & Co Kg | Method for creating a formwork element for a concrete formwork and formwork element for a concrete formwork |
DE20121563U1 (en) * | 2001-09-27 | 2003-01-02 | Sfs Intec Holding Ag Heerbrugg | Screw for fixing a casing plate to a metal casing carrier, comprises a threaded part with two different diameters having different pitches |
-
2004
- 2004-03-26 DE DE102004014944A patent/DE102004014944A1/en not_active Withdrawn
-
2005
- 2005-03-11 EP EP20050005359 patent/EP1580348A3/en not_active Withdrawn
- 2005-03-24 US US11/088,497 patent/US20050210796A1/en not_active Abandoned
- 2005-03-25 RU RU2005108493/03A patent/RU2005108493A/en not_active Application Discontinuation
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5118454A (en) * | 1991-05-02 | 1992-06-02 | Davidson Textron Inc. | Method for repairing voids in vinyl skin covered urethane foam products |
US5437750A (en) * | 1994-04-08 | 1995-08-01 | Fokker Special Products B.V. | Method for securing a thermoplastic insert |
US5632923A (en) * | 1994-04-28 | 1997-05-27 | Hayakawa; Yoshiyuki | Concrete molding form member |
US6913666B1 (en) * | 1997-03-21 | 2005-07-05 | Woodwelding Ag | Process for anchoring connecting elements in a material with pores or cavities and connecting elements therefor |
US7160405B2 (en) * | 1999-06-18 | 2007-01-09 | Woodwelding Ag | Integral joining |
US20070062628A1 (en) * | 1999-06-18 | 2007-03-22 | Woodwelding Ag | Integral joining |
US6786989B2 (en) * | 2000-05-26 | 2004-09-07 | Woodwelding Ag | Sealing |
US20040056172A1 (en) * | 2000-12-12 | 2004-03-25 | Ezio Sedran | Modular elements for formworks |
US6632863B2 (en) * | 2001-10-25 | 2003-10-14 | Crane Plastics Company Llc | Cellulose/polyolefin composite pellet |
US20060032172A1 (en) * | 2002-10-18 | 2006-02-16 | Foell David S | Concrete fillable formwork wall |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2789769A1 (en) | 2013-04-12 | 2014-10-15 | ULMA C y E, S. COOP. | Repairing element adapted to be fixed to a housing of a formwork board, repairing method of a formwork board and repaired formwork board |
WO2014166951A1 (en) * | 2013-04-12 | 2014-10-16 | Ulma C Y E, S. Coop | Unit comprising a formwork board including a housing and a repairing element suitable for being fixed to the housing, and repairing method of a formwork board |
US10118366B2 (en) | 2013-04-12 | 2018-11-06 | ULMA CyE, S. Coop. | Unit comprising a formwork board including a housing and a repairing element suitable for being fixed to the housing, and repairing method of a formwork board |
Also Published As
Publication number | Publication date |
---|---|
RU2005108493A (en) | 2006-09-10 |
EP1580348A3 (en) | 2008-05-21 |
DE102004014944A1 (en) | 2005-10-13 |
EP1580348A2 (en) | 2005-09-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4258745B2 (en) | Fastening method for joining element in material having hole or void and joining element for fastening | |
US5713166A (en) | Monocoque staircase and method for joining wooden pieces | |
US9068365B2 (en) | Anchoring the ends of tension members on reinforced concrete beams | |
JP2880179B2 (en) | T-joint between two moldings | |
JP3272839B2 (en) | Jig for joining | |
US20050210796A1 (en) | Formwork component | |
JP2004263548A (en) | Connection structure between timbers in wooden building, and method of connecting the same | |
JPH08120786A (en) | Joint structure for wooden member | |
JP2004092058A (en) | Structure and method for joining composition member for building | |
CN108104501B (en) | CFRP (carbon fiber reinforced plastics) -based reinforced concrete reinforcing method | |
JP3033880B2 (en) | Connection structure of precast RC columns and glulam beams | |
JP3781306B1 (en) | Construction material joining structure and building | |
FR2760478A1 (en) | BEAM-TYPE CONSTRUCTION ELEMENT | |
JP3822717B2 (en) | Pillar-to-column-to-beam joint hardware, stigma-to-leg beam joint structure using the hardware, and a building unit having the structure | |
RU212431U1 (en) | wooden beam | |
RU216976U1 (en) | COMBINED JOINT FOR WOOD CONCRETE FLOOR STRUCTURES | |
JPS63147056A (en) | Undercoating execution method to building | |
JP3816943B1 (en) | Equipment for joining structural members of wooden buildings | |
JP2004360458A (en) | Joint structure of construction component member and joining method of same | |
JPH08120790A (en) | Coupling fitting for construction member | |
US20230219252A1 (en) | Method of gluing a wood product and a glued wood product | |
JP3253743B2 (en) | How to join columns and small wall panels | |
DE10009048A1 (en) | Carpentry joint system comprises two-part connector inserted into dovetails in components to be joined, tensioning component being inserted between two parts of connector to fasten joint. | |
KR101499036B1 (en) | Glulam for structure and method for producing same | |
JP2000129782A (en) | Junction jig, junction structure and junction method for structural member using the same |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: DOKA INDUSTRIE GMBH, AUSTRALIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:FRENZL, JOSEF;REEL/FRAME:016441/0036 Effective date: 20050322 |
|
AS | Assignment |
Owner name: WODWELDING AG, SWITZERLAND Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:DOKA INDUSTRIE GMBH;REEL/FRAME:019859/0321 Effective date: 20070820 |
|
AS | Assignment |
Owner name: WOODWELDING AG, SWITZERLAND Free format text: CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE'S NAME PREVIOUSLY RECORDED ON REEL 019859 FRAME 0321. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNEE'S NAME IS SPELLED INCORRECTLY. THE CORRECT SPELLING SHOULD BE WOODWELDING AG INSTEAD OF WODWELDING AG.;ASSIGNOR:DOKA INDUSTRIE GMBH;REEL/FRAME:020348/0105 Effective date: 20070820 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |