EP0849014A1 - Transfervorrichtung zum taktweisen Werkstücktransport - Google Patents
Transfervorrichtung zum taktweisen Werkstücktransport Download PDFInfo
- Publication number
- EP0849014A1 EP0849014A1 EP97121900A EP97121900A EP0849014A1 EP 0849014 A1 EP0849014 A1 EP 0849014A1 EP 97121900 A EP97121900 A EP 97121900A EP 97121900 A EP97121900 A EP 97121900A EP 0849014 A1 EP0849014 A1 EP 0849014A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- transfer
- drive
- drives
- transfer rail
- direct
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
- B21D43/02—Advancing work in relation to the stroke of the die or tool
- B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
- B21D43/05—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work specially adapted for multi-stage presses
- B21D43/055—Devices comprising a pair of longitudinally and laterally movable parallel transfer bars
Definitions
- the invention relates to a transfer device the features of the preamble of claim 1.
- multi-station presses for example body presses or the like
- transfer devices with which workpieces are transported from stage to stage will.
- transfer devices usually two parallel transfer rails, between which are spaced apart from each other with cross beams Holding means, such as suction spiders or the like, are held.
- the workpiece is transported by a Combined lifting, advancing and lowering movement of the transfer rails (Two-axis transfer).
- transfer devices are known where instead of the crossbars on the transfer rails held holding means are provided.
- the Crossbars run here in addition to the lifting, lowering and feed movement another cross movement (triaxial transfer with vertical movement for lifting / lowering, longitudinal movement to perform a transfer step and cross movement to open and close).
- a three-axis transfer is already known in which as drives for the movements in the three movement axes Linear motors are provided.
- the linear motors are controlled separately, with the linear motors one Transport rail synchronous to the linear motors of the other transport rail as well as press synchronized will.
- the transfer device according to the invention which as Can be designed as two or three-axis transfer, points at least one, preferably two to each other parallel transfer rails on at least one Axis direction, for example in the "open / close" direction, that is, towards and away from each other, by means of electric direct drives are operated. Doing so the respective transfer rail in the transverse direction of several parallel direct electric drives driven, with their respective output on the Attack transfer rail.
- the direct drives are different from each other spaced and along the length of the transfer rail distributed. E.g. are three or more direct drives provided for each axis.
- the control device provided for control controls the direct drives belonging to an axis coincidentally so that the transfer rail over their entire length performs the specified movement uniformly.
- the control device preferably receives sensor signals, e.g. about the current position of the transfer rail, so that position control can be obtained can.
- the control device has in addition to its regular Operating mode in which it causes the transfer rail (s), preferably in the specified cycle along one programmable or otherwise adjustable transfer curve to move to an emergency mode in which they at least one of the connected and to be operated synchronously
- Direct drives are essentially force-free switches free of forces.
- Such an error can exist, for example, if an assigned to the linear actuator in question Position sensor emits an invalid signal. Becomes recognized this, the assigned direct drive becomes very quickly switched off. This prevents that he works against the other direct drives and the Blocked or blocked movement of the transfer rail. If a single drive fails, the motion sequence can continued until a safe state is reached will.
- the communication system (bus, star, ring) between central control and intelligent drives is designed so that if one individual fails Drive remains operational.
- the control device controls the remaining direct drives in the Emergency mode continues, however, so that the movement of the Transfer rail is continued at least until the Holding means led out of the workstations are. Because of the quick release of power from the This can be done with the direct drive affected by the accident remaining linear motors with sufficient speed done, which are designed for this.
- the transfer rail is in an axis of several, preferably more than three direct drives is the loss of performance in the event of failure and after activating a direct drive, low that the transfer rail is removed from the danger area can be.
- the direct drives in the emergency operating mode also for a short time with excessive power operate. This is particularly the case if the Operation of the transfer device is not over a few cycles away but only continues until the transfer rails and / or the holding means in in a safe position.
- the direct drives assigned to an axis point preferably uniform performance, so that emergency operation in the event of failure of any direct drive leads to tolerable conditions.
- the direct drives are preferably efficient dimensioned so that if a direct drive fails the full required total output
- the transfer rail of the transfer device according to the invention is preferably particularly rigid, to ensure that even if a Direct drive no elastic bends occur, leading to a collision between transfer rail and Tool.
- the bending stiffness, for example, in Lateral direction is increased so far that the natural frequency a mounting rail section, which extends from one worker over a fancy to that next working direct drive extends, is larger than the lowest excitation frequency resulting from the lateral movement in the emergency mode results.
- the movement of the transfer rail can be in the emergency mode deviate from the motion curve that the Transfer rail runs during normal operation. Especially can the movement curve during emergency operation be determined that the fastest possible exit from the Workstations is made possible. This may happen with a pure lateral movement of the transfer rail can be achieved. Usually, however, too attempted during emergency operation, which during regular operation passing curve at least within a predetermined Tolerance to follow.
- the direct drives are preferably electrical Linear motors, but also hydraulic or others electrically controllable direct drives are used can.
- the Direct drives or the control device can Monitor device for the detection of error states be provided.
- the monitor device can be part of the Control device or formed separately from this and is used in the event of a system failure direct drive that can no longer be controlled correctly and the emergency mode with the other direct drives initiate.
- a further increase in operational security will by using a redundant communication system between the central control and the intelligent Drives reached. Reliability is further increased through redundant execution of the central Control.
- the control device preferably contains separate ones Control units, each assigned to a direct drive are.
- the control units subordinate to a central unit communicate with each other and with the Central unit via a data transmission system, the one Can have ring structure or bus structure. To avoid of subsequent failures of larger system parts failed transmission sections switched to inactive will. You can also use the entire system or parts of which can be designed redundantly by stand-by units be provided, the operation in the event of a fault take over.
- a multi-station press 1 is schematic indicated, the several in the direction of T in succession arranged press stations 2, 3, 4 and possibly has further press stations, not shown.
- the Workstations 3, 4 assigned plungers 6, 7 only indicated in dashed lines, with tappet guides, Ram drives and press frames for simplification are omitted.
- the press frame is just through stands 8, 9 shown by way of example and in section, 10 indicated.
- Press station for transporting workpieces from the press station Press station in which tools 12, 13, 14 are arranged are a three-axis transfer device 15.
- the Workpiece transport may take place between the press stations 2, 3, 4 arranged intermediate shelves 17, 18, 19.
- the transfer device 15 has two along the Passage direction T extending, parallel to each other Transfer rails 21, 22, the holding means 23 for Carrying and storing the workpieces.
- the transfer rails 21, 22 are with respect to a vertical longitudinal median plane the multi-station press 1 inclusive their drives are mirror-symmetrical to each other. The following description of the transfer rail 21 applies therefore correspondingly for the transfer rail 22.
- the transfer rail 21 is in the direction of T as well as in the vertical direction V and on the center of the multi-station press 1 to and from this, that is in Transverse direction Q, movably mounted.
- the transfer rail 21 in the longitudinal direction (clock direction T) is used for a longitudinal slide guide.
- This will formed by a longitudinal beam 25 on which the transfer rail 21 is mounted for longitudinal displacement.
- the transfer rail 21 in the longitudinal direction serve electrical Linear motors between the side members 25 and the transfer rail 21 act and as direct drives are trained. Over the length of the side member 25 can be distributed over several linear motors. In principle are also controlled or regulated hydraulic drives possible.
- position control position-sensing Sensors are provided which determine the relative position of the Characteristic transfer rail 21 with respect to the longitudinal beam 25 Give signal.
- the longitudinal beam 25 is of several, in the longitudinal direction spaced-apart cross slides 26, 27 worn, the output of linear motors 28, 29 for form the transverse direction Q.
- the linear motors 28, 29 are provided with sensors, not shown, a Issue position signal.
- the Linear motors 28, 29 each on lifting units 31, 32 kept, also by means of electric linear motors or other direct drives can be operated.
- the transfer device is used to improve clarity 15 separately illustrated in FIG. 2, wherein deviating from the transfer device described above on the longitudinal member 25, which is divided several times here not a continuous transfer rail, but individual ones Carriage units 33 are mounted for longitudinal displacement, each with its own linear drive are driven. Each carriage unit 33 registers Holding means 23.
- the linear motor 28 is illustrated. He has a primary part serving as an output 281 and a secondary part 282 formed as a stator, the in corresponding grooves of the ferromagnetic stator Short circuit conductor 283 contains. In grooves of the ferromagnetic Primary part 281 embedded windings phase-shifted (U, V, W; U ', V', W '). If necessary can instead of such a single comb motor also a double comb motor, a solenoid motor or a Synchronous motor with permanent magnetic excitation is used will.
- the advantage of the asynchronous motor is in the fact that it is particularly easy to switch off leaves.
- Control device 36 the press controller 37 is subordinate.
- the control device 36 has one Central unit 38 to which via an optical fiber ring line 39 control units 41, 42, 43, 44 and 45 as well as other control units, not shown are.
- the optical fiber ring line 39 is used for data exchange between the central unit 38 and the control units 41 to 45.
- Each control unit 41 to 45 controls an electric linear motor 28, 29, for position feedback, each with a linear position measuring unit 46, 47 is provided.
- a monitor unit M On the control units 41 to 45 and / or on the Central unit 38 is a monitor unit M in each case trained the correct functioning of each Unit of the connected linear drive (28, 29) and connected sensors (46, 47) are monitored.
- the Monitor unit M can also be part of control units 41 to 45 or the central unit 38. E.g. can the Monitor function from the control unit or from one Program section to be provided, which becomes a program the control or central unit 41 to 35, 38 belongs.
- control units 41 to 45 and the central unit 38 influence the Monitor units M the operation of the control device 36 Not.
- the control units 41 to 45 received from the Central processing unit 38 via the optical fiber ring line 39 control signals for positioning the transfer rail 21.
- the control units 41 to 45 set this Control commands and regulate the respectively connected Linear motors so that the specified movement is achieved becomes.
- Figures 6 and 6A illustrate relative to FIG a press revolution angular ranges in which the transfer device 15 completed movements must and their timings. More than a half Angular range 51 taking eccentric shaft rotation indicates the downward stroke of the press ram e.g. in a drawing stage or in another press stage. The remaining angular range 52 characterizes the Return stroke of the ram. The control is on this movement the linear drives synchronized.
- the transfer rails 21, 22 guide a feed stroke in an angular range 53 out of a workpiece in the open tool leads. The transfer rails begin before the feed stroke ends 21, 22 in the angular range 54.
- the transfer rails 21, 22 begin in the Angular range 55 to move away from each other to release the closing tool.
- the stamp is moved further downwards, begins during the Opening movement (angular range 55) of the transfer rails 21, 22 whose return stroke 66 at an angular position of about 110 °.
- the return stroke 66 Tranferschienen 21, 22, these begin with themselves opening tool in an angular range 57 again close to grasp the workpiece and open Raise die in area 58 and in the next cycle continue to convey in the angular range 53.
- the angular range proves to be particularly critical 55, in which the opening transfer rails the Must have left the working area of the ram while the tool closes. If this does not succeed, can the press ram because of the relatively large flywheels do not stop abruptly, so that there is a collision between the tool and the transfer rails 21, 22 or the holding means 23 comes.
- the safe or collision-free position P can on the movement curve can be achieved, which otherwise also with proper Operation is going through.
- the definition of different Curves KN for emergency operation, on which a collision-free Position P faster or with less effort is achievable is possible. With the emergency operation achieved that only a small security angle between the removal of the holding means 23 from the Tool and closing the tool required is. Then the working speed of the press increase.
- the Transfer rail 21 has such a lateral rigidity on that they are relative at the occurring large accelerations in the direction of the Q axis deflects significantly. In addition, it has a stiffness reserve on, which prevents the transfer rail 21 in the event of failure of a linear motor, e.g. the Linear motor 29, due to the now larger distance between the active linear motors 28 and 29a at the side Accelerate bends elastically, as at 61 indicated.
- the increased rigidity of the transfer rail 21 thus enables that in the event of a linear motor failure its driving force from the neighboring linear motors 28, 29a and the other linear motors and is introduced into the transfer rail 21.
- the control device takes a similar emergency operation 36 in the event of failure of parts of the optical fiber ring line 39 a, with appropriate interpretation of the information transmission system only for failure one or fewer drive units.
- the Linear motors that remain active go into emergency operation over and pose during the particularly critical opening phase (55 in Fig. 6) collision-free operation for sure.
- Fig. 7 is a modified, as a two-axis transfer trained transfer device 15 'illustrates in which the transfer rails 21, 22 only in the direction of passage T and in the vertical direction V are movable.
- the transfer rails 21, 22 For driving in the direction of travel T and as a lifting unit for Lifting and lowering in the vertical direction serve electrical purposes Linear drives, as in principle and as an example in Fig. 3 illustrates.
- suction spiders 63 With such a two-axis transfer device 15 'it depends on the holding means 23 (suction spiders 63) in the event of an error when closing the To bring the tool out of it in time.
- a controller 36 for direct electric drives 28, 29 of a transfer device 15 contains at least one Monitor device M, the malfunction of a direct drive 28, 29 the control device 36 in an emergency operating mode toggles.
- the switches in the emergency mode Control device 36 to those affected by the error Linear drive is powerless and controls the remaining ones Direct drives preferably with full or slightly excessive Performance so that there is no collision between the forming tool and the transfer device 15 after which the press is preferably shut down becomes.
Abstract
Description
- Fig. 1
- eine Mehrstationenpresse mit Dreiachstransfer, in schematisierter, ausschnittsweiser Darstellung unter Weglassung der Stößelführungen und der Stößelantriebe,
- Fig. 2
- den Dreiachstransfer nach Fig. 1 mit als Direktantrieb dienenden Linearmotoren, in perspektivischer, schematisierter Darstellung,
- Fig. 3
- einen Asynchron-Linearmotor, wie er als Direktantrieb für den Dreiachstransfer nach Fig. 2 verwendbar ist, in schematisierter, vereinfachter Schnittdarstellung,
- Fig. 4
- eine Transferschiene des Dreiachstransfers mit ausgefallenem Linearantrieb, in einer Draufsicht, unter überhöhter Darstellung möglicher dynamischer Übergangsvorgänge,
- Fig. 5
- eine die Linearmotoren ansteuernde Steuereinrichtung mit mehreren Steuereinheiten, im Blockschaltbild,
- Fig. 6
- ein Polardiagramm zur Darstellung der zeitlichen bzw. phasenmäßigen Zuordnung von Bewegungen des Dreiachstransfers in Bezug auf einen Pressenumlauf,
- Fig. 6A
- Zeitverläufe der Bewegung der Transferschienen und des Pressenstößels, und
- Fig. 7
- einen mittels elektrischer Linearmotoren angetriebenen Zweiachstransfer in perspektivischer Prinzipdarstellung.
Claims (11)
- Transfervorrichtung (15) für den Werkstücktransport entlang mehrerer Arbeitsstationen, insbesondere Pressenstationen (2, 3, 4),mit wenigstens einer Transferschiene (21), deren Längserstreckung im wesentlichen mit einer Richtung (T) übereinstimmt, in der die Werkstücke taktweise zu transportieren sind, und die mit Einrichtungen (23) zur Aufnahme bzw. zum Festhalten der Werkstücke versehen ist,mit mehreren elektrischen Direktantrieben (28, 29), deren Abtriebe mit der Transferschiene (21) verbunden sind und die die Transferschiene (21) mit übereinstimmender Kraftrichtung antreiben, so daß die elektrischen Direktantriebe (28, 29) eine Antriebsgruppe für eine vorgegebene Achsrichtung (Q) bilden,mit einer Steuereinrichtung (36), die die elektrischen, zu der Antriebsgruppe gehörenden Direktantriebe (28, 29) im wesentlichen übereinstimmend ansteuert und die in einem durch Ausfall eines Direktantriebes (28, 29) oder diesem zugeordneter Teile der Steuereinrichtung (36) hervorgerufenen Gefahrenfall eine Notbetriebsart einnimmt,
dadurch gekennzeichnet,daß die Steuereinrichtung (36) in der Notbetriebsart den von dem Ausfall betroffenen Direktantrieb (28, 28a, 29 bis 29d) der Antriebsgruppe im wesentlichen kräftefrei schaltet, unddaß die Steuereinrichtung (36) in der Notbetriebsart die verbleibenden Direktantriebe (28a, 29 bis 29d) weiter ansteuert und die Transferschiene (21) und deren Festhaltemittel (23) aus den Arbeitsstationen (2, 3, 4) herausführt. - Transfervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Direktantriebe (2, 3, 4) eine miteinander übereinstimmende Leistungsfähigkeit aufweisen, die jeweils gleich der erforderlichen Gesamtleistung geteilt durch die um Eins verminderte Anzahl der Direktantriebe (28, 28a, 29 bis 29d) ist.
- Transfervorrichtung nach Anspruch 1, dadurch gekennzeichnet,daß die Direktantriebe (28, 28a, 29 bis 29d) zum Antrieb der Transferschiene (21) in einer Richtung (Q) quer zu der Längsrichtung der Transferschiene (21) dienen,daß die Abtriebe der Direktantriebe (28, 28a, 29 bis 29d) an voneinander beabstandeten Stellen an der Transferschiene (21) angreifen unddaß die Transferschiene (21) eine Biegesteifigkeit aufweist, die so bemessen ist, daß sichergestellt ist, daß bei Querbeschleunigung durch volle Kraftentfaltung wenigstens zweier Direktantriebe (28, 29a) und Ausfall eines zwischen diesen angeordneten benachbarten Direktantriebes (29) in dem Bereich des ausgefallenen Direktantriebes (29) eine maximale elastische Verbiegung auftritt, bei der die Transferschiene (21) bei dem ausgefallenen Direktantrieb (29) dem vorgegebenen Zeitverlauf der Querbewegung innerhalb der vorgegebenen Toleranz folgt.
- Transfervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Direktantriebe (28, 28a, 29 bis 29d) in der Notbetriebsart derart angesteuert werden, daß die Bewegung der Transferschiene (21) wenigstens abschnittsweise innerhalb einer vorgegebenen Toleranz einem bei regulärem Betrieb durchfahrenen Zeitverlauf folgt.
- Transfervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Direktantriebe (28, 28a, 29 bis 29d) elektrische Linearmotoren sind, die ohne Zwischenschaltung eines Getriebes mit der Transferschiene (21) verbunden sind.
- Transfervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Steuereinrichtung (36) wenigstens eine Monitoreinrichtung (M) zur Funktionsüberwachung enthält.
- Transfervorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Monitoreinrichtung (M) zur Fehlererkennung Signale überwacht, die von zu der Steuereinrichtung gehörigen Sensoren (46, 47) und/oder Geräten abgegeben worden sind.
- Transfervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Steuereinrichtung (36) die Transferschiene (21) stillsetzt, sobald die Transferschiene (21) in der Notbetriebsart eine sichere Position erreicht hat.
- Transfervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Steuereinrichtung (36) einzelne, jeweils den Direktantrieben (28, 28a, 29 bis 29d) zugeordnete Steuereinheiten (41 bis 45) enthält, die untereinander über ein Datenübertragungssystem kommunizieren, das als redundantes Kommunikationssystem ausgelegt ist.
- Transfervorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Steuereinrichtung (36) eine redundant ausgeführte zentrale Steuerung (37) aufweist.
- Mehrstationenpresse mit einer Transfervorrichtung nach einem oder mehreren der Patentansprüche 1 bis 10.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19652709A DE19652709A1 (de) | 1996-12-18 | 1996-12-18 | Transfervorrichtung zum taktweisen Werkstücktransport |
DE19652709 | 1996-12-18 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0849014A1 true EP0849014A1 (de) | 1998-06-24 |
EP0849014B1 EP0849014B1 (de) | 2001-03-14 |
Family
ID=7815154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97121900A Expired - Lifetime EP0849014B1 (de) | 1996-12-18 | 1997-12-12 | Verfahren zum Schalten einer Transfervorrichtung zum taktweisen Werkstücktransport |
Country Status (4)
Country | Link |
---|---|
US (1) | US6176365B1 (de) |
EP (1) | EP0849014B1 (de) |
DE (2) | DE19652709A1 (de) |
ES (1) | ES2156333T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19932706A1 (de) * | 1999-07-15 | 2001-01-25 | Joern Hattesohl | Vorrichtung zum Bearbeiten von Werkstücken |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19831623A1 (de) * | 1998-07-15 | 2000-01-20 | Mueller Weingarten Maschf | Verfahren zur Steuerung des Antriebs einer Großteilstufenpresse und Vorrichtung zur Durchführung des Verfahrens |
DE10157328A1 (de) * | 2001-11-23 | 2003-06-12 | Schuler Pressen Gmbh & Co | Vorrichtung zum Transport von Werkstücken innerhalb einer Mehrstufenpresse |
DE10202348B4 (de) * | 2002-01-23 | 2009-01-02 | Müller Weingarten AG | Entnahmeeinrichtung zum Transport von Formteilen |
US7036350B2 (en) * | 2002-09-04 | 2006-05-02 | Schuler Pressen Gmbh & Co. | Arrangement for production of cut out and/or unformed workpieces |
DE102004005046B4 (de) * | 2004-01-30 | 2008-01-24 | Müller Weingarten AG | Transportvorrichtung für Werkstücke in Pressen |
JP5844838B2 (ja) * | 2013-05-30 | 2016-01-20 | アイダエンジニアリング株式会社 | サーボプレスラインの運転方法および運転制御装置 |
DE102015122796A1 (de) * | 2015-12-23 | 2017-06-29 | Benteler Automobiltechnik Gmbh | Warmformlinie zur Herstellung warmumgeformter und pressgehärteter Stahlblechprodukte sowie Verfahren zu dessen Betreibung |
EP3236215B1 (de) * | 2016-04-22 | 2018-06-27 | Siemens Aktiengesellschaft | Verfahren, linearantrieb und anlage |
SE542025C2 (en) * | 2018-06-21 | 2020-02-11 | Gestamp Hardtech Ab | Process and apparatus for cooling hot components |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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DE4422719A1 (de) * | 1994-06-29 | 1996-01-04 | Erfurt Umformtechnik Gmbh | Sicherheitseinrichtung an einem flexiblen Tranfersystem für Pressen |
DE19506079A1 (de) * | 1995-02-22 | 1996-08-29 | Schuler Pressen Gmbh & Co | Vorrichtung zum Transfer von Werkstücken durch eine Folge von Bearbeitungsstationen |
WO1997028913A1 (en) * | 1996-02-08 | 1997-08-14 | Komatsu Ltd. | Transfer press |
Family Cites Families (12)
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US4187942A (en) * | 1975-11-27 | 1980-02-12 | Herbert Morris Ltd. | Transfer beam conveyor |
GB2043012B (en) * | 1979-03-01 | 1983-01-12 | Hoklykem Holdings Ltd | Conveying articles between liquidtreatment stations |
JPS58605A (ja) * | 1981-06-23 | 1983-01-05 | Fujikura Rubber Ltd | ピストン式流体作動装置 |
US4540087A (en) * | 1982-08-19 | 1985-09-10 | Kabushiki Kaisha Komatsu Seisakusho | Three-dimensional work transfer apparatus |
US4513602A (en) * | 1982-09-30 | 1985-04-30 | Sofy Hugh M | Transfer device |
US4627253A (en) * | 1984-07-25 | 1986-12-09 | Verson Allsteel Press Co. | Fault detection system for continuously running transfer press |
BR8701734A (pt) * | 1987-03-24 | 1987-08-11 | Prodty Engenharia E Comercio L | Aperfeicoamento em sistema de transferencia de pecas, com mecanismo de levantamento das pecas,ou terceiro eixo,derivado do acionamento do eixo de aproximacao das garras |
US5105647A (en) * | 1988-06-23 | 1992-04-21 | Maher John H | System for transferring workpieces through a series of work stations |
US4969349A (en) * | 1988-06-23 | 1990-11-13 | Maher John H | Synchronized dual axis actuator |
US5140839A (en) * | 1991-06-27 | 1992-08-25 | Hitachi Zosen Clearing, Inc. | Cross bar transfer press |
JP3562656B2 (ja) * | 1994-07-01 | 2004-09-08 | 株式会社小松製作所 | トランスファフィーダの非常退避装置 |
DE19542205A1 (de) * | 1995-11-13 | 1997-05-15 | Schuler Pressen Gmbh & Co | Presse mit kombinierter Transfereinrichtung |
-
1996
- 1996-12-18 DE DE19652709A patent/DE19652709A1/de not_active Withdrawn
-
1997
- 1997-12-12 ES ES97121900T patent/ES2156333T3/es not_active Expired - Lifetime
- 1997-12-12 EP EP97121900A patent/EP0849014B1/de not_active Expired - Lifetime
- 1997-12-12 DE DE59703136T patent/DE59703136D1/de not_active Expired - Fee Related
- 1997-12-18 US US08/993,090 patent/US6176365B1/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4422719A1 (de) * | 1994-06-29 | 1996-01-04 | Erfurt Umformtechnik Gmbh | Sicherheitseinrichtung an einem flexiblen Tranfersystem für Pressen |
DE19506079A1 (de) * | 1995-02-22 | 1996-08-29 | Schuler Pressen Gmbh & Co | Vorrichtung zum Transfer von Werkstücken durch eine Folge von Bearbeitungsstationen |
WO1997028913A1 (en) * | 1996-02-08 | 1997-08-14 | Komatsu Ltd. | Transfer press |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19932706A1 (de) * | 1999-07-15 | 2001-01-25 | Joern Hattesohl | Vorrichtung zum Bearbeiten von Werkstücken |
DE19932706C2 (de) * | 1999-07-15 | 2002-04-25 | Joern Hattesohl | Vorrichtung zum Bearbeiten von Werkstücken |
Also Published As
Publication number | Publication date |
---|---|
ES2156333T3 (es) | 2001-06-16 |
US6176365B1 (en) | 2001-01-23 |
DE59703136D1 (de) | 2001-04-19 |
EP0849014B1 (de) | 2001-03-14 |
DE19652709A1 (de) | 1998-06-25 |
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