WO2008003714A1

WO2008003714A1 - Device for transferring a film from a backing strip onto a substrate

Info

Publication number: WO2008003714A1
Application number: PCT/EP2007/056742
Authority: WO
Inventors: Oliver Bartling
Original assignee: Henkel Ag & Co. Kgaa
Priority date: 2006-07-06
Filing date: 2007-07-04
Publication date: 2008-01-10
Also published as: DE102006031173A1; DE102006031173B4

Abstract

The invention relates to a device for transferring a film (11) from a backing strip (10, 10') onto a substrate. Devices of said type are preferably used in the office environment, for example for transferring adhesive, correction or labeling films from a backing strip to e.g. a paper surface by means of a manual dispenser. A device of the aforementioned type generally comprises a rotatable supply reel (1) from which the backing strip (10) which is coated with the film (11) is unwound, a rotatable winding reel (2) which winds up the backing strip (10') and the rotational movement of which is coupled to the rotational movement of the supply reel (1), and an applicator element (4) via which the backing strip (10, 10') is guided for applying the film (11) onto the substrate. In order to improve the guidance reliability of the backing strip, the applicator element (4) is situated at a distance from the axis (3, 3') of the storage (1) and/or winding reel (2), a first backing strip section (12) extending between the supply reel (1) and the applicator element (4) and a second backing strip section (13) extending between the applicator element (4) and the winding reel (2), said sections running substantially parallel to each other at a small distance or forming a small angle (α).

Description

Apparatus for transferring a film from a carrier tape to a substrate

The present invention relates to an apparatus for transferring a film from a carrier tape to a substrate. Such devices are preferably used in the office, such as for transferring an adhesive, correction or marking film from a carrier tape to e.g. B. used a paper surface by means of a so-called hand rolling device. Such a device usually has a supply and a take-up reel for the carrier tape, wherein the carrier tape is guided to press its film side starting from the supply reel via an applicator element and back to the take-up reel.

A device of the type mentioned above for applying an adhesive or correction film to a substrate is known, for example, from EP 0 313 719 B1. The exchange cassette described there for a generic hand rolling device comprises a supply reel, on which the unused carrier tape is rolled up with film, a take-up reel on which the used carrier tape is wound up without a film and an applicator for the actual film application to the substrate. The carrier tape is unwound from the supply spool and passed over the applicator, which applies the film to the substrate by pressing. In detail, the manual rolling device is pulled with the applicator under appropriate contact pressure in the longitudinal direction of the carrier tape over the substrate, wherein continuously carrier tape is unwound from the supply reel. Behind the application device, the carrier tape, now without film, returned to the take-up reel and wound up on this. The removable cassette is arranged in the ready state in the housing of a hand rolling device and basically allows easy replacement of a spent cassette, in which already the entire film is transferred or the supply reel is completely unwound. In general, the rotation of the take-up spool is coupled to the rotation of the supply spool to tension the carrier web at each operating condition to keep. Regardless of said device is sensitive to movement of the applicator perpendicular to the withdrawal direction of the film from the carrier tape. This involves the risk of slipping of the carrier tape from the applicator. In such a case, the manual rolling device is initially unusable. First, the carrier tape must laboriously be threaded onto the applicator before the handwheel can be properly used again.

In view of this, the object of the present invention is to provide a generic device for transferring a film from a carrier tape to a substrate, which ensures a reliable carrier tape guide under all operating conditions.

This object is achieved by a device for transferring a film from a carrier tape to a substrate with a rotatable supply reel, from which the carrier coated with the film carrier tape is unwound, with a rotatable take-up reel on which the carrier tape is wound and its rotational movement to the rotational movement the supply spool is coupled, and with an applicator element over which the carrier tape is guided for applying the film to the substrate. The coordinated rotational movement of the two coils provides in this context for an always strained carrier tape and thus for a reliable operation of the device. To improve a reliable carrier tape guide, the applicator element is spaced from the axis of rotation of the supply and / or take-up reel, a first carrier tape portion extending between the supply reel and the applicator member and a second carrier tape portion extending between the applicator member and take-up reel at a small distance substantially parallel or include a small angle α. Thus, the carrier tape is passed around at an acute angle, in particular around the end of the applicator element. This makes it more difficult for the carrier belt to slide sideways Tragelement, ie perpendicular to the longitudinal direction of the carrier tape, and also facilitates the detachment of the film from the carrier tape. It is advantageous if the distance between the two carrier tape sections is less than 20 mm, in particular less than 10 mm. According to an alternative embodiment of the device, the two carrier tape sections do not run completely parallel, so that the first and second carrier tape sections enclose a small angle α, which is preferably smaller than 5 °.

A first advantageous embodiment of the device provides that the supply and the take-up reel are arranged coaxially, wherein the two coils are adjacent to each other on the common axis. This construction is very space-saving and thus allows the construction of very small hand rolling machines.

According to a preferred embodiment of the latter device, the two carrier tape sections are guided over a deflection roller whose diameter is smaller than that of the supply reel or the take-up reel. The deflection roller thus ensures that the carrier tape sections are guided at a small distance from one another to the application element or away from it. This effect is enhanced by the fact that the deflection roller is arranged on a line between the axis of the supply and the take-up reel and the applicator element, wherein the deflection roller of the supply and the take-up reel is closer than the applicator element. In particular, the greatest possible distance between the deflection roller and the applicator element is set so that the carrier tape sections which are as long as possible and run essentially parallel at a small distance are produced.

A meaningful further development of the embodiment with deflection roller results from the fact that the deflection roller has two conical lateral surfaces for the first and the second carrier tape section. The conical lateral surfaces thus compensate for the axial offset between the supply and take-up reel and - A -

thus improve the carrier tape guide. In particular, it is helpful if the conical lateral surfaces of the deflection roller have different diameters or cone angles, which are specifically adapted to the respective. In this way, a slip clutch can be set to the deflection roller by appropriate choice of the diameter and / or the cone angle, which couples the rotational movement of the take-up reel to the supply reel. In addition to the defined choice of diameter and / or wedge angle, the effect of the slip clutch on the deflection roller can also be advantageously influenced by different surface properties on the lateral surfaces. The aim here is to roll up carrier tape on the take-up reel to a sufficient extent during operation of the device, in order to guide the carrier tape taut, especially on the application element.

An equally effective second alternative of the device arises from the fact that the axis of the supply reel and the axis of the take-up reel are arranged substantially parallel. The two coils can thus be arranged side by side in a common plane or with only a slight offset. Due to this form of arrangement, the rolling point of the carrier tape on the supply reel and the reeling point of the carrier tape on the take-up reel are close to each other. In this case, a deflection roller can advantageously be dispensed with, since the first and the second carrier band section already run almost parallel to one another. To couple the rotational movements of the two coils, at least one gear or a suitable gear transmission is arranged between the supply reel and the take-up reel.

A functional improvement in the handling of the device results from the fact that the applicator element is rotatably arranged. It can thus be adjusted ergonomically within the hand-rolling device to the respective user or the specific type of application. To further improve the reliable operation of the device, the carrier tape wound on the supply reel has the film on the side facing the axis of the supply reel. This measure simplifies the carrier tape guide, in particular when using a variant with deflection roller.

Further useful details of the invention will become apparent from the illustrated in the drawings embodiments, which are explained in more detail below.

It shows,

Fig. 1 is a side view of a device for film transfer in a first embodiment;

FIG. 2 shows a plan view of the device according to FIG. 1; FIG.

3 is an enlarged sectional view of a deflection roller of the device according to Figure 1;

Fig. 4 is a side view of a device for film transfer in a second embodiment.

FIGS. 1-2 each illustrate, in schematic representation, two variants of a device for transferring a film from a carrier tape to a substrate, as are frequently used in the office area within a manual rolling device for transferring an adhesive, correction or marking film. Also in the figures such devices are shown. Usually, the individual components of the device are each arranged in a housing, not shown, of the manual rolling device. The first variant of such a device shown in FIG. 1 has a supply reel 1 on which the unused carrier tape 10 with the film 11 applied thereon is rolled up, wherein the carrier tape 10 is coated with the film 11 on its sides facing the reel rotation axis 3. The supply reel 1 is in turn rotatably mounted, for example in the housing of the hand rolling device. Another rotatably mounted take-up reel 2 serves to receive the used carrier tape 10 'without film 11 and is arranged coaxially with the supply reel 1. The two coils 1, 2 thus have a common axis of rotation 3 and are for the realization of a compact design side by side. The rotational movement of the two coils 1, 2 is coupled to each other.

For the actual transfer of the film 11 to the substrate, not shown, in particular paper, the device comprises an applicator element 4, over which the carrier tape 10 is guided. In detail, the applicator element 4 has an application edge 5 over which the carrier tape 10 is guided. During movement of the carrier tape 10 over the application edge 5, the film 11 is transferred to the substrate. More specifically, the coated with the film 11 carrier tape 10 is unwound from the supply reel 1, passed over the applicator 4 with application edge 5 and from there without the now transferred to the substrate film 11 to the take-up reel 2, where the used carrier tape 10 'rolled up again becomes. The transport direction of the carrier tape 10, 10 'is also illustrated by the arrows in Figures 1-2. The carrier belt transport is usually caused by the movement of the application edge 5 over the substrate, wherein the application edge 5 rests on the substrate under a low contact pressure. For the reliable operation of a generic device, it is crucial that carrier tape guide is insusceptible to errors and that the carrier tape 10, 10 'always remains taut. This is especially true since over the life of the device, the diameter of the supply 1 and the take-up reel 2 change. Therefore, the rotational movement of the two coils is over a suitable coupling, in particular a slip clutch, coupled to each other.

In order to ensure the most reliable guidance of the carrier tape 10, 10 ', a deflection roller 20 is provided between the two coils 1, 2 and the applicator element 4, over which the carrier tape 10, 10' is guided accordingly. In this case, both a first carrier tape section 12, which extends between the supply reel 1 and the applicator element 4, and a second carrier tape section 13, which extends between the applicator element 4 and the take-up reel 2, guided over the guide roller 20. The guide roller 20 has a small diameter, which is significantly smaller than that of the two coils 1, 2, whereby the first 12 and the second carrier tape section 13 between guide roller 20 and applicator 4 at a small distance almost parallel or only a very small angle α lock in. As a result, the carrier tape sections 12, 13 are guided around the application edge 5 at a very acute angle, which generally improves the carrier tape guide and thus reduces the risk of knotting of the carrier tape 10, 10 '. Thus, the device is also insensitive to slippage of the carrier tape 10, 10 'from the applicator 4 in movements perpendicular to the longitudinal direction 6 of the carrier tape sections 12, 13. In addition, by the acute angle of the carrier tape sections 12, 13 at the application edge 5, the detachment of the film 11 facilitated by the carrier tape 10. The reliability of the carrier tape guide is further increased by the carrier tape section 12, 13 between the guide roller 20 and applicator element 4 is selected as long as possible. In particular, it makes sense to place the deflection roller 20 on the connecting line between the application element 4 and the package rotation axis 3, preferably as far as the package rotation axis 3.

Furthermore, the quality of the carrier tape guide can still be influenced by the special design of the guide roller 20. These details are mainly to remove gur 3. Basically, both the first carrier tape section 12, which extends from the supply reel 1 to the applicator element 4, and the second carrier tape section 13, which extends between the applicator element 4 and the take-up reel 2, are guided on the guide roller 20. For this purpose, the guide roller 20 has two conical lateral surfaces 22, 23, against which the respectively associated carrier tape section 12, 13 abuts. The transport direction of the carrier tape sections 12, 13 with respect to the plane of the drawing of Figure 3 is indicated by the symbols arrowhead (ie out of the plane of the drawing) and arrow end (ie in the plane of the drawing). The respective cone angles α ₂ , ct3 are set in such a way that the axial offset of the two coils 1, 2 is compensated for and thus level compensation takes place between supply / take-up reel 1, 2 and application edge 5. In addition, the diameter D ₂ , D _{3 of} the conical lateral surfaces 22, 23 are designed specifically to keep the carrier tape 10, 10 'always taut especially at the application edge 5. Specifically, the guide roller 20 is driven by the voltage applied to the conical surface 22 with a smaller diameter D ₂ first carrier tape section 12, wherein between the conical surface 23 with a larger diameter D ₃ and the second carrier tape section 13, a slip is generated. This slip keeps the carrier tape 12, 13 taut, especially in the critical region of the application edge 5. The specific adjustment of said slip can still be supported by different surface textures on the two conical lateral surfaces 22, 23. Furthermore, the conical lateral surfaces 22, 23 bounded by guide plates 24 which define the position of the adjacent carrier tape sections 12, 13 and thus an undesirable lateral Slipping the carrier tape sections 12, 13 of the guide roller 20 prevent.

FIG. 4 shows an alternative embodiment of the device with a supply reel 1 and a take-up reel 2, whose axes 3, 3 ', around which they respectively rotate, run essentially parallel to each other. Again, the rotation movement of the two coils 1, 2 coupled to each other, wherein between the two coils 1, 2 at least one gear, not shown, or a suitable gear transmission is arranged. The two coils 1, 2 are preferably positioned in one plane or with only a slight axial offset. In addition, the distance between the two axes of rotation 3, 3 'deliberately as small as possible. This results in a very small distance between the first carrier tape portion 12 extending between the supply reel 1 and the applicator 4 and the second carrier tape portion 13 extending between the applicator 4 and the take-up reel 2 as in the first embodiment. By a large distance of the applicator element 4 to the two coils 1, 2 extend the first 12 and the second carrier tape section 13 over a large length substantially parallel with a small distance or close a very small angle α. As already mentioned, this ensures a very reliable carrier tape guide which is insusceptible to errors. Here comes the second variant of the device with parallel axes 3, 3 'of the coils 1, 2 without a deflection roller, which reduces the component expenditure pleasing. Furthermore, this embodiment has the advantage that the applicator element 4 can be rotated about the longitudinal direction 6 of the first and second carrier tape section 12, 13 in the direction of arrow 7. In particular, the applicator element 4 may be rotatably arranged in a housing, not shown, of an associated hand rolling device. The rotatable arrangement of the applicator element 4 allows ergonomic alignment of the applicator edge 5 depending on the current user or specific application.

LIST OF REFERENCE NUMBERS

1 supply spool

2 take-up spool

3 axis

4 task item

5 application edge

6 longitudinal direction

7 direction of rotation

10, 10 'carrier tape

11 movie

12 first carrier tape section

13 second carrier tape section

20 pulley

22, 23 conical surface

24 Guide washer α Angle

02, Ct ₃ cone angle

D ₂ , D ₃ diameter

Claims

claims

Anspruch [en] A device for transferring a film (11) from a carrier tape (10, 10 ') to a substrate with a rotatable supply spool (1) from which the carrier tape (10) coated with the film (11) is unwound, with a rotatable Take - up reel (2), on which the carrier tape (10 ') is wound and whose rotary motion is coupled to the rotary movement of the supply reel (1), and with an applicator element (4), via which the carrier tape (10, 10') for applying the Films (11) is guided on the substrate, characterized in that the applicator element (4) from the axis (3, 3 ') of the storage (1) and / or the take-up reel (2) is spaced, one between the supply reel (1) and the applicator element (4) extending first carrier tape section (12) and between the applicator element (4) and the take-up reel (2) extending second carrier tape section (13) at a small distance substantially parallel or include a small angle α s.

2. Apparatus according to claim 1, characterized in that the distance between the two carrier tape sections (12, 13) is less than 20 mm, in particular less than 10 mm.

3. Device according to one of the preceding claims, characterized in that the first and second carrier tape section (12, 13) included angle α is smaller than 5 °.

4. Device according to one of the preceding claims, characterized in that the supply (1) and the take-up reel (2) are arranged coaxially.

5. Device according to one of the preceding claims, characterized in that the carrier tape sections (12, 13) via a deflection roller (20) are guided, whose diameter (D ₂ , D ₃ ) smaller than that of the supply reel (1) or the take-up reel (3) is.

6. Device according to claims 4-5, characterized in that the deflection roller (20) on a line (6) between the axis (3) of the supply (1) and the take-up reel (2) and the applicator element (4) is, wherein deflection roller (20) of the supply and the take-up reel (1, 2) is closer than the applicator element (4).

7. Device according to one of claims 5-7, characterized in that the deflection roller (20) has two conical lateral surfaces (22, 23) for the first and the second carrier tape portion (12, 13).

8. The device according to claim 8, characterized in that the conical lateral surfaces (22, 23) of the deflection roller (20) have different diameters (D ₂ , D ₃ ) and cone angle (α ₂ , α ₃ ).

9. Device according to one of claims 8-9, characterized in that the conical lateral surfaces (22, 23) of the deflection roller (20) have different surface textures.

10. Device according to one of claims 1-3, characterized in that the axis (3) of the supply reel (1) and the axis (3 ') of the take-up reel (2) are arranged substantially parallel.

11. The device according to claim 10, characterized in that the rotation of the take-up reel (2) via at least one gear to the rotation of the supply reel (1) is coupled.

12. Device according to one of claims 10-11, characterized in that the applicator element (4) is rotatably arranged.

13. Device according to one of the preceding claims, characterized in that on the supply reel (1) wound carrier tape (10) has the film (11) on the axis (3) of the supply reel (1) facing side.