JP2005271382A - Overcoat apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an overcoat apparatus capable of surely attaching an overcoat film on the surface of a recording medium. <P>SOLUTION: In the overcoat apparatus 1, as a roller part 64a has an approximately same width as the width of a film A1, and restricting parts 64b for restricting the movement of the film A1 in the central axial line direction of the roller part 64a are formed on both ends of the roller part 64a, the film A1 extending from the bobbin 24 and wound on the roller part 64a can run almost without meandering. In addition, as the bobbin 24 on which the film A1 is wound has a play in the central axial line direction and is held by a bobbin holding part 26, even when the winding position of the film A1 to the bobbin 24 is shifted, the bobbin 24 is moved to the bobbin holding part 26 so that the film A1 is surely wound on the roller part 64a. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an overcoat apparatus for attaching an overcoat film to the surface of a recording medium such as a card.

As a conventional overcoat apparatus of this type, there is known an apparatus in which a carrier film and a card to which an overcoat film is attached are configured to pass between a heat roller and a platen roller provided side by side. (For example, refer to Patent Document 1). With such a configuration, the overcoat film on the carrier film is thermocompression bonded to the surface of the card.
Japanese Patent Laid-Open No. 10-71648

  By the way, in the overcoat apparatus as described above, the carrier film is run between the heat roller and the platen roller by winding the carrier film wound around the supply-side bobbin around the winding-side bobbin. Is common.

  However, if the winding position of the carrier film with respect to the bobbin on the supply side or the bobbin on the winding side is shifted, for example, the carrier film runs between the heat roller and the platen roller while meandering, and the overcoat film is placed on the surface of the card. There is a risk that problems will occur when attaching.

  Accordingly, the present invention has been made in view of such circumstances, and an object of the present invention is to provide an overcoat apparatus that can reliably apply an overcoat film to the surface of a recording medium such as a card.

  In order to achieve the above object, an overcoat apparatus according to the present invention includes a bobbin around which a carrier film is wound in an overcoat apparatus in which an overcoat film on a traveling carrier film is thermocompression bonded to the surface of a recording medium by a heat roller. A bobbin holding part that holds with play in the central axis direction, a roller part that has a width substantially the same as the width of the carrier film, and on which the carrier film extending from the bobbin is wound, and formed at both ends of the roller part And a restricting part that restricts the movement of the carrier film in the direction of the central axis of the roller part.

  In this overcoat apparatus, the roller portion has a width substantially the same as the width of the carrier film, and a restricting portion for restricting the movement of the carrier film in the central axis direction of the roller portion is formed at both ends of the roller portion. Therefore, the carrier film extending from the bobbin and wound around the roller portion travels with almost no meandering. As a result, the overcoat film on the traveling carrier film is thermocompression bonded to an accurate position on the surface of the recording medium by the heat roller. In addition, since the bobbin around which the carrier film is wound is held by the bobbin holding part with play in the central axis direction, even if the winding position of the carrier film with respect to the bobbin is shifted, the carrier film is placed on the roller part. The bobbin moves relative to the bobbin holding portion so as to be reliably wound. This prevents wrinkles on the carrier film or bending of the carrier film at the roller portion. As described above, according to the overcoat apparatus, it is possible to reliably apply the overcoat film to the surface of the recording medium.

  Moreover, it is preferable that the position of the roller portion in the central axis direction can be adjusted. This allows the overcoat film on the traveling carrier film to be recorded by the heat roller by adjusting the position of the roller in the direction of the central axis even when the position of the overcoat film applied to the carrier film is shifted. It is possible to perform thermocompression bonding at an accurate position on the surface of the medium.

  According to the present invention, an overcoat film can be reliably attached to the surface of a recording medium such as a card.

  Hereinafter, preferred embodiments of an overcoat apparatus according to the present invention will be described in detail with reference to the drawings.

  As shown in FIG. 1, the overcoat apparatus 1 is an apparatus for attaching an overcoat film disposed on a carrier film A1, A2 with a predetermined interval to the upper and lower surfaces of a plastic card (recording medium) S. . The overcoat apparatus 1 has a card transport path 3 extending in the horizontal direction in the housing 2, and a pair of upper and lower transport rollers 4 for transporting the card S while sandwiching the card S in the card transport path 3. Are arranged at a predetermined interval.

  On the upper side of the card conveying path 3, a supply roller 6 around which a carrier film A1 for attaching an overcoat film to the upper surface of the card S is wound, and a winding roller 7 that winds the carrier film A1 from the supply roller 6 are provided. Has been placed. The carrier film A1 drawn from the supply roller 6 is wound around a pair of front and rear film guide rollers 8 arranged along the card transport path 3 and reaches the take-up roller 7.

  Similarly, on the lower side of the card conveyance path 3, a supply roller 10 around which a carrier film A2 for attaching an overcoat film to the lower surface of the card S is wound, and winding up to wind the carrier film A2 from the supply roller 10 is performed. A roller 11 is arranged. The carrier film A <b> 2 drawn out from the supply roller 10 is wound around a pair of front and rear film guide rollers 12 arranged along the card conveying path 3 and reaches the take-up roller 11.

  In addition, a heat roller 13 is arranged between the guide rollers 8 and 8 on the upper side of the card transport path 3 so as to be movable back and forth with respect to the card transport path 3. On the lower side of 3, between the guide rollers 12, 12, a heat roller 14 configured to be able to advance and retreat with respect to the card transport path 3 is disposed. The advance / retreat timing of the heat roller 13 is controlled by the sensor 16 detecting the mark attached to the carrier film A1, and similarly, the advance / retreat timing of the heat roller 14 is determined by detecting the mark attached to the carrier film A2. 17 is controlled by detecting.

  Thereby, when each heat roller 13 and 14 advances to the card conveyance path 3, the conveyed card | curd S is pinched | interposed by the heat roller 13 and the heat roller 14 from the upper and lower sides, and carrier film A1 is carried on the upper surface of the card | curd S. The carrier film A2 is pressed against the lower surface of the card S. As a result, the overcoat film placed on the carrier film A1 is thermocompression bonded to the upper surface of the card S, and the overcoat film placed on the carrier film A2 is thermocompression bonded to the lower surface of the card S. The Thereafter, the heat rollers 13 and 14 are retracted from the card transport path 3.

  The winding roller 7 described above will be described in more detail. The supply rollers 6 and 10 and the take-up roller 11 have the same configuration as that of the take-up roller 7, and thus the description thereof is omitted.

  As shown in FIG. 2, the take-up roller 7 has a shaft 19 that is rotatably supported via a slide bearing 18 by an outer wall 2 a and an inner wall 2 b on the back side of the housing 2. A drive motor 21 for winding the carrier film A1 is connected to the shaft 19 via a gear portion 22 between the outer wall 2a and the inner wall 2b. Further, a torque limiter 23 is attached to the shaft 19 between the outer wall 2a and the inner wall 2b. Thereby, when a torque of a predetermined value or more is applied to the shaft 19, the driving force by the driving motor 21 is cut off, and the carrier film A1, the gear portion 22 and the like are protected.

  In the supply rollers 6 and 10, the drive motor 22 is not connected to the shafts 19, but a torque limiter 23 is attached. This is to prevent the carrier films A1 and A2 from loosening on the upstream side of the heat rollers 13 and 14.

  As shown in FIG. 3, on the inner side of the inner wall 2b, the shaft 19 is provided with a bobbin holding portion 26 that holds a cylindrical bobbin 24 around which the carrier film A1 is wound. The bobbin holding portion 26 includes a main body portion 31 to which the bobbin 24 is attached and a stopper portion 41 to be attached to the front side end portion of the main body portion 31.

  The stopper portion 41 is formed in a cylindrical shape having an insertion recess 41 a that is open on the back side, and a claw portion 42 that protrudes on the back side sandwiches the shaft 19 at the back side end portion of the stopper portion 41. A pair is formed. Further, a through hole 43a through which the shaft 19 slidably passes is formed in the bottom wall 43 of the stopper portion 41. Further, as shown in FIG. 4, a groove 43 b extending vertically is formed on the front side end surface of the bottom wall 43, and the groove 43 b is erected vertically at the tip of the shaft 19. A stopper pin 19a is arranged. The bottom wall 43 of the stopper portion 41 is formed with a slit 43c that extends vertically and allows the stopper pin 19a to pass through when the stopper portion 41 is rotated 90 degrees around the shaft 19.

  As shown in FIG. 3, the front end portion of the main body 31 is slidably inserted into the insertion recess 41 a of the stopper portion 41. The main body 31 is formed in a cylindrical shape having a through hole 31a through which the shaft 19 slidably passes. Further, a flange 32 is integrally formed at the rear side end portion of the main body portion 31, and a pair of claw portions 33 protruding to the front side is formed on the flange 32 with the shaft 19 interposed therebetween. Note that a through-hole 31a is widened in a stepped shape at the front side end of the main body 31, and a large-diameter portion 31b having a predetermined length is formed. Further, the front side end portion of the main body 31 is tapered so that the stopper 41 can be easily attached to the front side end of the main body 31.

  Further, a notch portion 24 a that engages each claw portion 33 of the main body portion 31 is formed at the rear side end portion of the bobbin 24, and each claw of the stopper portion 41 is formed at the front side end portion of the bobbin 24. A notch portion 24b with which the portion 42 engages is formed. Thereby, although the inner diameter of the bobbin 24 is slightly larger than the outer diameter of the main body 31, the bobbin 24 is restricted from moving around its central axis.

  Further, a flange 51 is fixed to the shaft 19 between the flange 32 of the main body 31 and the inner wall 2b, and a compression spring is provided between the flange 51 and the flange 32 of the main body 31 so as to surround the shaft 19. 52 is arranged. Accordingly, the main body 31 and the stopper 41 are arranged so that the front end of the main body 31 contacts the bottom surface of the insertion recess 41a of the stopper 41 and the inner surface of the groove 43b of the stopper 41 contacts the stopper pin 19a. Is biased to the front side.

  In this state, the distance between the front end face of the flange 32 of the main body 31 and the rear end face of the stopper 41 is slightly longer than the width of the bobbin 24 in the central axis direction. That is, the bobbin holding portion 26 holds the bobbin 24 with play in the central axis direction. When the shaft 19 is rotated by the drive motor 21, the bobbin holding portion 26 and the bobbin 24 rotate integrally through the stopper pin 19 a of the shaft 19, the claw 42 of the stopper portion 41, and the claw 33 of the main body portion 31. To do.

  Subsequently, the above-described film guide roller 8 will be described in more detail. Since the film guide roller 12 has the same configuration as the film guide roller 8, the description thereof is omitted.

  As shown in FIGS. 2 and 5, the film guide roller 8 has a shaft 62 supported by a support portion 61 fixed to the inner wall 2 b on the back side of the housing 2. The support portion 61 is formed in a cylindrical shape having an insertion recess 61 a that opens to the front side so that the rear end portion of the shaft 62 can be inserted, and the bottom wall 61 b has a rear end portion on the rear side of the shaft 62. A screw hole 61c is formed in which a screw part 62a formed in the part is screwed.

  A roller body 64 is attached to the shaft 62 via a pair of sliding bearings 63 so as to be rotatable around the shaft 62 inside the inner wall 2b. The roller body 64 includes a roller portion 64a around which the carrier film A1 extending from the bobbin 24 is wound, and a restriction portion 64b formed integrally at both ends of the roller portion 64a. The roller portion 64a has substantially the same width as the width of the carrier film A1, and the restricting portion 64b has an outer diameter larger than the outer diameter of the roller portion 64a, and therefore is wound around the roller portion 64a. The carrier film A1 is restricted from moving in the direction of the central axis of the roller portion 64a.

  In addition, the roller part 64a and the control part 64b are continuing via the taper part 64c. Therefore, even if the traveling carrier film A1 is about to come off from the roller part 64a for some reason, the carrier film A1 is prevented from wrinkling or bending, and the roller part 64a is prevented from bending. The return of the carrier film A1 upward is promoted.

  Further, a groove 62b for rotating the shaft 62 forward or backward using a coin or the like is formed on the front end surface of the shaft 62. When the shaft 62 is rotated forward or reverse using the groove 62b, the screw portion 62a of the shaft 62 is screwed into the screw hole 61c of the support portion 61, so that the shaft 62 moves forward or backward with respect to the inner wall 2b. fall back. Thus, the position of the roller portion 64a in the central axis direction can be adjusted.

  Here, a flange 66 is fixed to the shaft 62 between the roller body 64 and the support portion 61, and a compression spring 67 is disposed between the flange 66 and the support portion 61 so as to surround the shaft 62. ing. This prevents the shaft 62 from moving forward or backward relative to the inner wall 2b unless the shaft 62 is rotated forward or backward using a coin or the like. A screw hole (not shown) is formed on the rear end surface of the shaft 62, and a machine screw 69 is fastened to the screw hole via a washer 68. This is to prevent the shaft 62 from falling off the inner wall 2b by using the washer 68 as a stopper when the shaft 62 is reversed using a coin or the like and the shaft 62 is retracted from the inner wall 2b. .

  In the overcoat apparatus 1 configured as described above, the roller portion 64a has substantially the same width as that of the carrier film A1, and restricts the movement of the carrier film A1 in the central axis direction of the roller portion 64a. Since the restricting portions 64b are formed at both ends of the roller portion 64a, the carrier film A1 extending from the bobbin 24 and wound around the roller portion 64a travels without being meandered. As a result, the overcoat film on the traveling carrier film A1 is thermocompression bonded to an accurate position on the upper surface of the card S by the heat roller 13.

  Moreover, since the bobbin 24 around which the carrier film A1 is wound is held by the bobbin holding part 26 with play in the central axis direction, the roller even if the winding position of the carrier film A1 with respect to the bobbin 24 is shifted. The bobbin 24 moves with respect to the bobbin holding part 26 so that the carrier film A1 is reliably wound around the part 64a. As a result, wrinkles on the carrier film A1 or bending of the carrier film A1 at the roller portion 64a is prevented.

  The same applies to the configuration (for example, the supply roller 10, the take-up roller 11, the film guide roller 12, and the like) in which the carrier film A2 travels in order to attach the overcoat film to the lower surface of the card S. .

  Therefore, according to the overcoat apparatus 1, it is possible to reliably apply the overcoat film to the upper and lower surfaces of the card S.

  Further, even when the position where the overcoat film is attached to the carrier film A1 is shifted, by adjusting the position of the roller portion 64a in the direction of the central axis, as shown in FIG. The overcoat film B1 can be thermocompression-bonded to the accurate position on the upper surface of the card S by the heat roller 13. This also applies to the configuration in which the carrier film A2 is run to attach the overcoat film to the lower surface of the card S.

  Finally, a procedure for replacing the bobbin 24 in the above-described winding roller 7 will be described. Since the supply rollers 6 and 10 and the take-up roller 11 have the same configuration as the take-up roller 7, the bobbin 24 can be replaced by the following replacement procedure.

  First, as shown in FIG. 7, the stopper 41 is pressed against the back side against the urging force of the compression spring 52, the stopper pin 19 a is removed from the groove 43 b of the stopper 41, and then the stopper 41 is attached to the shaft 19. The slit 43c of the stopper portion 41 extends vertically by rotating 90 degrees around. Subsequently, as shown in FIG. 8, the stopper portion 41 is removed so that the stopper pin 19a passes through the slit 43c. Subsequently, as shown in FIG. 9, the main body 31 is moved to the front side until the stopper pin 19 a contacts the bottom surface of the large-diameter portion 31 b of the main body 31, and the main body 31 protrudes from the inside of the housing 2 to the outside. Then, the bobbin 24 is removed. Then, another bobbin 24 is attached to the take-up roller 7 by a procedure opposite to the above procedure. Thus, since the main-body part 31 can be protruded outside from the inside of the housing | casing 2, the bobbin 24 can be replaced | exchanged efficiently.

  The present invention is not limited to the above embodiment. For example, the above embodiment is a case where the overcoat apparatus 1 attaches an overcoat film to a plastic card. However, in the present invention, various recording media such as a paper card are to be overcoated. be able to.

It is a front view of one embodiment of an overcoat device concerning the present invention. FIG. 2 is a side view of a winding roller and a film guide roller viewed from the arrow α side in FIG. 1. It is sectional drawing of the winding roller of FIG. It is a front view of the winding roller of FIG. It is sectional drawing of the film guide roller of FIG. It is a top view of the film guide roller seen from the arrow (beta) side of FIG. It is sectional drawing which shows the 1st step of the replacement procedure of the bobbin in a winding roller. It is sectional drawing which shows the 2nd step of the replacement procedure of the bobbin in a winding roller. It is sectional drawing which shows the 3rd step of the replacement procedure of the bobbin in a winding roller.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Overcoat apparatus, 13, 14 ... Heat roller, 24 ... Bobbin, 26 ... Bobbin holding part, 64a ... Roller part, 64b ... Restriction part, A1, A2 ... Carrier film, B1 ... Overcoat film, S ... Card ( recoding media).

Claims (2)

In an overcoat apparatus for thermocompression bonding an overcoat film on a traveling carrier film to the surface of a recording medium by a heat roller,
A bobbin holding portion for holding the bobbin around which the carrier film is wound with play in the direction of the central axis thereof;
A roller portion having a width substantially the same as the width of the carrier film and wound around the carrier film extending from the bobbin;
An overcoat apparatus, comprising: a restricting portion that is formed at both ends of the roller portion and restricts the movement of the carrier film in the central axis direction of the roller portion.   The overcoat apparatus according to claim 1, wherein the position of the roller portion can be adjusted in the central axis direction.

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