JP2005219253A - Film chucking apparatus and film chucking method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a film chucking apparatus capable of certainly and stably grasping the end part of a film even if the end part of a film is not flat, and a film chucking method using it. <P>SOLUTION: In the film chucking apparatus constituted so that the film end part 7a protruded from a table end part 12 for supporting the film 7 is inserted in the gap between a chucking surface 1 almost flush with a table surface and the press part 3a of a shakable clip 3 and the inserted film end part 7a is pressed by the chucking surface 1 and the press part 3a of the clip while shaking the clip and grasped, an air nozzle 6 for correcting the film end part 7a by air streams is provided so as to make it easy to insert the film end part 7a in the gap between the chucking surface 1 and the press part 3a of the clip. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a film chuck apparatus and a method for gripping a film end with a clip of a transverse stretching apparatus, and in particular, the film end can be formed by using an air flow even for a soft and thin film. The present invention relates to a film chucking apparatus and chucking method that can be stably held.

  Conventionally, for example, the one shown in FIG. 10 is known as a chuck device for a film which is flattened at an end portion (ear portion) of the film and then supplied to a lateral stretching device for the film. The lateral stretching device 50 of the film includes two upper guide mechanisms (an upper guide member 18, an upper guide plate portion 18a, a mounting portion 18b, an inclined guide) that are disposed at positions opposite to each other in the horizontal direction by being separated by the width of the film. Portion 18c, support 26, hinge bracket 28, support bracket 30) and lower guide mechanisms (lower guide plate 12, inclined guide portion 12a, notch portion 12b, respectively) disposed at positions facing each other in the vertical direction. And a support member 30 connected to the support 26 so as to be able to be flipped upward via a hinge member 28. The support member 30 is provided with a fixing member 16). And an upper guide member 18a connected to the support fitting 30, and the lower guide mechanism includes a fixing member 16 fixed to the fixing portion, and It is fixed to the fixing member 16 and a lower guide plate 12.

The upper guide member 18 and the lower guide member 12 are arranged in parallel to each other with a predetermined gap that can be adjusted, and the film before correction is in a state where the end portion is sandwiched between the predetermined gaps. It arrange | positions so that it may be transferred to the film horizontal stretch apparatus side. In addition, the film clip apparatus shown with the code | symbol 52 in FIG. 10 is equivalent to the clip block in embodiment of this invention.
(For example, refer to Patent Document 1).
Japanese Utility Model Publication No. 5-35252

  However, in the conventional film chucking device, the resistance of the film to the soft and thin film (less than 5μ) that is soft and thin is sandwiched between the upper guide plate and the lower guide plate. Is too large, it becomes difficult to move forward, and as a result, wrinkles occur and gripping by the clips of the transverse stretching device cannot be stably performed.

  In addition, it is not possible to deal with a film in which the end of the film is originally curved, warped or curled. Furthermore, even if the film edge is flat, the temperature of the clip is usually above room temperature, so even for films that shrink, just before the film edge is chucked by the clip, bend, warp, or curl. I can not cope.

  Further, when the film end is wrinkled or has an irregular shape, it cannot be stably gripped.

  On the other hand, if the gap between the upper guide plate and the lower guide plate is adjusted so as to correspond to these films, it is not easy to withstand.

  The present invention has been made in view of the above-described circumstances, and a film chuck device that can reliably grip a film end even when the film end is not flat due to bending, warping, curling, and the like, and An object is to provide a chucking method.

  In order to solve the above-described problems, the film chucking apparatus according to the present invention is such that the film end (7a) protruding from the end of the table (12) supporting the film (7) is substantially flush with the table surface. It is inserted between the chuck surface (1) and the pressing part (3a) of the swingable clip (3), and the inserted film end (7a) swings the clip (3) to In the chuck device for the film (7) pressed and gripped by the chuck surface (1) and the pressing portion (3a) of the clip (3), the chuck surface (1) and the pressing portion (3a) of the clip (3) So that the film end (7a) inserted between the chuck surface (1) and the pressing portion (3a) of the clip (3) can be easily inserted. Equipped with air correction means (6) The features.

  Moreover, it is preferable here that the said air correction means (6) is comprised by the air nozzle (6) arrange | positioned so that air may be ejected from diagonally upward with respect to the said chuck | zipper surface (1). Moreover, it is preferable that the said air nozzle (6) has an air jet nozzle of a long hole (6b), and is arrange | positioned so that the length direction of this long hole may become parallel to a film surface. Further, the air nozzle (6) is provided in a plurality (6A, 6B, 6C) so that air is ejected obliquely from above to the chuck surface (1) of the plurality of clip blocks (4) that are arranged and driven. It is preferable. The air correction means (6) preferably further blows air so as to adjust the temperature of the chuck surface (1). Further, in the chuck device of the present invention, the chuck surfaces (4) of the plurality of clip blocks (4) are arranged upstream of the air correction means (6) with respect to the plurality of clip blocks (4) that are driven forward. It is preferable that an air pipe (13) in which a plurality of holes (13a) are formed is provided so as to eject air for temperature adjustment with respect to 1). The air pipe (13) is preferably provided so as to be separated from the plurality of clip blocks (4) while maintaining substantially the same distance.

  The film chucking method according to the present invention also supports the film (7) on the table (12) so that the film end (7a) protrudes from the end of the table (12), and the protruding film end. In the method of chucking the film (7) in the lateral stretching apparatus in which the film (7) is laterally stretched by holding the clip (7a) by the clip (3) driven endlessly arranged, the film end (7a ) Is inserted between the chuck surface (1) and the pressing portion (3a) of the clip (3) immediately before the film end (7a) is pressed between the chuck surface (1) and the clip (3) ( 3a) is characterized in that the film end (7a) is corrected with an air flow so that it can be easily inserted during 3a).

  As described above in detail, according to the present invention, it is possible to provide a film chucking apparatus and a chucking method capable of reliably gripping a film end even if the film end is not flat. In addition, by adjusting the temperature of the chuck surface of the film with the blown air, it is possible to prevent deformation such as bending of the film edge due to the influence of the temperature of the chuck surface, and to further increase the certainty that it can be stably gripped. be able to.

  Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
FIG. 1 is a side view showing the configuration of the film chucking apparatus according to the first embodiment, and FIG. 2 is a plan view of the film transverse stretching apparatus.
The chuck device according to the present embodiment supports a clip block having a chuck surface 1 and a clip 3 provided above the chuck surface 1 so as to be swingable with respect to a fulcrum 2, and supports the clip block 4. The roller block 5 for transporting endlessly along the transport path and the clip block 4 is provided to be positioned obliquely above the chuck surface 1 of the clip block 4 when the clip block 4 reaches a predetermined position. And an air nozzle 6. The clip 3 is provided with a pressing portion 3 a that presses and grips an end portion (ear portion) 7 a of the film 7 inserted between the clip surface 1 and the chuck surface 1. The film 7 is supported by the table 12 (lower guide member).

  As shown in FIG. 2, a plurality of the above-described clip blocks 4 are arranged in an endless manner so that the transverse stretching apparatus faces the both sides across the conveyance direction 7 </ b> A of the film (5 μ to 500 μ) 7. The lateral width of the film 7 is stretched by moving the predetermined conveyance path 4A with the end portion 7a sandwiched between the chuck devices shown in FIG.

  The operation of the embodiment will be described below. For example, as shown in FIG. 3, the film edge 7a may be flat as shown in FIG. 3, or may be bent (a), bent (b), curved (c), or curled (d). . As shown in FIG. 4, in a conventional chuck device without an air nozzle, a film end portion between the clip 3 and the chuck surface 1 is used for a film whose end portion is not flat as shown in FIGS. 7a is difficult to insert, and there is a case where the clip 3 cannot be gripped well even if the clip 3 is swung and the film end 7a is pressed by the pressing portion 3a. Therefore, as shown in FIG. 5, even with a film having a curved end 7a, air (Air) is blown from the air nozzle 6 so that the film 7 extends along the chuck surface 1 (extending the film end). As shown in FIG. 1, the film end portion 7a is easily inserted between the chuck surface 1 and the clip 3, and the film end portion 7a can be well gripped in a stable state.

  As shown in FIG. 6A, the air nozzle 6 has a round hole 6a as well as a linear hole 6b as shown in FIG. 6B. According to the air nozzle 6 having the linear hole 6 b, the curved film end 7 a can be corrected so that it can be effectively inserted between the clip 3 and the chuck surface 1.

  FIG. 7 is an external view showing the lateral stretching operation of the film by the chuck device according to the present embodiment. Air is supplied to the air nozzle 6 via a pressure reducing valve 8 which can adjust the air amount by adjusting the air pressure. Further, since the air nozzle 6 is connected to the pressure reducing valve 8 using the flexible hose 9, the position of the air nozzle 6 can be easily changed and adjusted. Further, the air blown from the air nozzle 6 can be applied to the chuck surface 1 of the clip block 4 so that the temperature of the chuck surface 1 can be adjusted (cooled or heated). It is also possible to prevent deformation under the influence of the above. In this case, it is also effective to control or change the temperature of the blown air for cooling or heating.

  The results of implementation according to this embodiment are shown below.

Film thickness Film appearance Speed Result 5μ No waist (soft) 5-50m / min Good
Ear wrinkle 10μ No waist (soft) 5-50m / min Good 15μ No waist (soft) 5-50m / min Good 20μ No waist (soft) 5-50m / min Good 30μ No waist (soft) 5-50m / min good 50μ warp 5-50m / min good 100μ warp 40-100m / min good
Ears are ruffled 300μ No waist (soft) 40-100m / min Good
(Combination with upper guide member)

(Embodiment 2)
FIG. 8 is an external configuration diagram showing the second embodiment. In the first embodiment, the case where one air nozzle 6 is provided has been described. However, as shown in FIG. It may be cooled (or heated) to some extent from the previous stage. According to this configuration, the temperature of the clip block 4 (chuck surface 1) can be sufficiently adjusted, and the film end can be effectively prevented from being deformed by the influence of the temperature.

(Embodiment 3)
FIG. 9 is an external configuration diagram showing the third embodiment. In the third embodiment, the air pipe 13 is arranged at a certain distance from the clip blocks 4 so as to be along the clip blocks 4 arranged and conveyed on the upstream side of the air nozzle 6 shown in the first embodiment. The temperature of the chuck surface 1 can be adjusted instead of the plurality of air nozzles 6B and 6C shown in the second embodiment by supplying air through the control valve 15. As shown in FIG. 9 (b), the air pipe 13 has a plurality of holes 13a arranged in parallel on the clip block side so that air can be blown onto the chuck surface 1 from the previous stage of the gripping operation to cool or heat them. Has been devised. If this air pipe 13 is used, it is not necessary to use a plurality of air nozzles as in the second embodiment, and the position of the air pipe 13 can be easily adjusted by configuring the air pipe 13 with a flexible pipe. Excellent.

It is a side view which shows the chuck device by embodiment of this invention. It is a top view which shows the horizontal stretch apparatus of a film. It is a figure which shows the shape of a film edge part. It is a schematic side view which shows the conventional chuck | zipper apparatus. It is a side view which shows operation | movement of the chuck | zipper apparatus in embodiment. It is a figure which shows an air nozzle. 1 is a perspective view showing an overall configuration of a first embodiment. FIG. 5 is a perspective view showing an overall configuration of a second embodiment. FIG. 10 is a perspective view showing an overall configuration of a third embodiment. It is a perspective view which shows the film horizontal extending | stretching apparatus which has the conventional chuck | zipper apparatus.

Explanation of symbols

  1 Chuck surface, 3 clips, 4 clip blocks, 3a pressing part, 6, 6A, 6B, 6C air nozzle, 6a, 6b nozzle hole, 7 film, 7a film end, 8 pressure reducing valve, 9 flexible hose, 12 table (bottom Side guide plate), 13 air pipe, 13a hole.

Claims (8)

The film end (7a) that protrudes from the end of the table (12) that supports the film (7) is pressed by the chuck surface (1) that is substantially flush with the table surface and the clip (3) that can swing. Inserted between the portions (3a), and the inserted film end (7a) is pressed by the pressing portion (3a) of the chuck surface (1) and the clip (3) by swinging the clip (3). In the chuck device for the film (7),
The film end (7a) inserted between the chuck surface (1) and the pressing portion (3a) of the clip (3) is between the chuck surface (1) and the pressing portion (3a) of the clip (3). A film chucking device comprising air correction means (6) for correcting an end portion of the film with an air flow so as to facilitate insertion into the film.   The film according to claim 1, wherein the air correction means (6) includes an air nozzle (6) arranged so as to eject air from obliquely above the chuck surface (1). Chuck device.   The film according to claim 2, wherein the air nozzle (6) has an air outlet of a long hole (6b), and the length direction of the long hole is parallel to the film surface. Chuck device.   A plurality (6A, 6B, 6C) of the air nozzles (6) are provided so as to eject air from obliquely above the chuck surfaces (1) of the plurality of clip blocks (4) that are arranged and driven. The film chucking device according to claim 1, wherein   6. The film chucking device according to claim 1, wherein the air correction means (6) further blows air so as to adjust a temperature of the chuck surface (1).   Further, on the upstream side of the air correction means (6) with respect to the plurality of clip blocks (4) that are driven forward, the temperature is adjusted with respect to the chuck surfaces (1) of the plurality of clip blocks (4). 6. The film chucking device according to claim 1, further comprising an air pipe (13) in which a plurality of holes (13a) are formed so as to eject air for use.   The film chucking device according to claim 6, wherein the air pipe (13) is provided so as to be separated from the plurality of clip blocks (4) while maintaining substantially the same distance. The film (7) is supported on the table (12) so that the film end (7a) protrudes from the end of the table (12), and the protruding film end (7a) is endlessly arranged and driven. In the method of chucking the film (7) in the transverse stretching apparatus which is held by the clip (3) to stretch the film (7) laterally,
Immediately before the film end (7a) is inserted between the chuck surface (1) and the pressing portion (3a) of the clip (3), the film end (7a) is connected to the chuck surface (1) and the clip (3). The film chucking method is characterized in that the film end (7a) is corrected with an air flow so that it can be easily inserted between the pressing portions (3a).

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