JP2007137585A - Automatic film changing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a separate type highly-versatile automatic film changing device capable of obtaining sufficient bonding strength and excellent seal strength while films can be bonded to each other without stopping the operation of a packaging machine, and the film bonding state is constant. <P>SOLUTION: The automatic film changing device comprises a pair of film holders 1, 1 to be alternately corresponding to the upper standby position T and the lower delivery position K, a pair of film holding means 2, 2 integrated with the pair of film holders 1, 1 to hold a film end FE drawn out of a film rolled web G at the standby position T, a welding/cutting means 4 for passing the film F to be delivered from the film rolled web G at the delivery position K and for welding/cutting the film end FE drawn out of the film rolled web G at the standby position T to the film F. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a separate automatic film changing apparatus that can continuously feed a packaging film for packaging various instant foods and the like in a sealed state toward a packaging machine.

  In the packaging process of packaging a package body with a laminated film having a thermoplastic stretched base film and a sealant layer, the rear end portion of the laminated film to be fed and the leading end portion of another laminated film prepared are usually Incorporating a joining process for joining. In such a joining process, there has been proposed a method for connecting laminated films that can be heat-sealed in a liquid-tight or air-tight manner without using an adhesive tape or other connecting member (see, for example, Patent Document 1). ).

  As shown in FIGS. 7 (a) and 7 (b), the connecting method is such that the end portions of the laminated films F and F are fused in a palm-like manner by a fusing seal with the sealant layers F2 and F2 facing each other. After being bonded and bonded, the stretched base film layers F1 and F1 facing each other are pressed in a state where the bonded portions of the sealant layers F2 and F2 are bent toward the one laminated film F, and the pressure is 0. Fusing is performed over a width of 1 to 1 mm. By such a two-step joining process, it is said that the joining part (connecting part) between the laminated films F and F has the joining strength required in the packaging process and the airtightness and heat seal strength required for the package. Yes.

In addition, when a film is unwound from an original film to be packaged, a film bonding apparatus has been proposed in which a replacement film original is automatically attached to a film holder (for example, , See Patent Document 2). Although not shown in the figure, this bonding apparatus is provided with a plurality of film holders movably between a film feeding position and a film standby position, and supplies the film raw material to the film holder moved to the film standby position. It is provided with a supply device for accumulating it as possible.
Japanese Patent No. 3450817 JP 2002-096949 A

  However, the above-described method for connecting laminated films F and F by heat sealing (Patent Document 1) requires two joining steps, a fusing step and a sealing step, and the sealing step includes paragraph [0019] of the specification. And [0020], it is troublesome to insert a positioning gauge between the both end portions of the laminated films F and F in order to accurately correspond the fusion bonded portion 7 by the fusing seal to the fusion sealer 26. The joining work is complicated because it requires work (presumably due to manual operation), and when the films are connected, the operation of the packaging machine must be temporarily stopped.

  In addition, as is well known, in the fusing seal, the film is melted and cut off with a piano wire heater so that the films are slightly welded, but the sealing strength and bonding strength are low. Although it is supposed that the films are fused over a width of 0.1 to 1 mm under pressure, as is clear from the illustration of FIG. 7B, the folded portions of one stretched base film are simply fused f. However, it is apparent that such fusion bonding does not contribute to the improvement of the bonding strength to the other laminated film F. Therefore, it is clear that sufficient bonding strength cannot be ensured between the laminated films F and F because only bonding strength by fusing seal can be obtained.

  On the other hand, the conventional automatic film joining apparatus requires a means for lifting the film holders arranged in parallel and a means for moving the film holder, and the structure is complicated. Each time the original film is replaced, the bonding state between each other is completely reversed, so the film can be easily turned over to the packaging machine (so that the bonding part is outside the package). The case where they are joined occurs.

  In addition, the film bonding apparatus is integrally incorporated in each packaging machine, and has a drawback of poor compatibility. In other words, the width of the original film that can be applied to this joining apparatus must be adapted to the film width set in the packaging machine, and therefore is limited by the packaging machine in which the design conditions of the joining apparatus are incorporated. In many cases, diversion to different packaging machines is impossible.

  The present invention has been made in view of such circumstances, and can be joined to each other without stopping the operation of the packaging machine, and the versatility in which the joining state of the film is always constant and sufficient joining strength and sealing strength can be obtained. An object of the present invention is to provide a separate automatic film changing apparatus having a high height.

(1) The automatic film changer according to the present invention includes a pair of film holders 1 each of which holds the original film G and is rotated so as to alternately correspond to an upper standby position T and a lower feeding position K. 1 and
A pair of film holding means 2, 2 integrated with the pair of film holders 1, 1 in order to hold the film end FE drawn from the film original fabric G at the standby position T;
For passing the film F fed from the film original fabric G at the feeding position K, and for welding / cutting the film end FE drawn from the film original fabric G at the standby position T to the film F. Welding / cutting means 4,
When one of the film holders 1 is at the feeding position K, one of the film holding means 2 is retracted to the retracted position S and holds the film end FE drawn out from the original film G at the standby position T. The other film holding means 2 corresponds to the welding / cutting means 4.

  According to such a configuration, first, the film holder 1 in the lower feeding position K is held in the original film G, and the film end FE is retracted to the retracted position S on one film holding means 2. When the original film G is held and moved to the upper standby position T, the film end FE corresponds to the welding / melting means 4. Next, the original film G is held by the film holder 1 moved to the lower feeding position K, and the film F fed from the original film G is connected to the packaging machine side through the welding / cutting means 4. The packaging work can be started.

  In this state, the film end FE drawn from the original film G at the upper standby position T corresponds to the welding / melting means 4, and therefore the film end FE is at the lower feeding position K. The film F fed from the original film G and passing through the welding / cutting means 4 can be welded / cut at any time. Therefore, not only when the original film G at the feeding position K has been used, but also when it is desired to change the pattern of the film F on the way or when trouble occurs, the welding / cutting means 4 is operated. Since welding and fusing can be easily performed, the labor and time required for the setup change can be greatly reduced, and the speed can be increased. In addition, if the film holder G is held in the film holders 1 and 1 according to the specifications (film width, etc.) of the packaging machine to be connected, it can be adapted to different specifications at any time. Compatibility). Further, since the film end FE is welded / cut to the film F via the welding / cutting means 4, the working state is stabilized.

  After completion of welding / cutting, while the film F fed out from the original film G at the upper standby position T is being used, the original film G or paper tube at the lower feeding position K is removed, The film holder 1 holds a new original film G, and the film end FE of the film F pulled out from the original film G held by the film holder 1 is retracted to the retracted position S. When the film holder 1 is held by the film holding means 2 and the film holder 1 is moved to the upper standby position T, the film holder 1 at the upper standby position T is moved to the feeding position K and the film F is continuously used. The film end FE held by one film holding means 2 corresponds to the welding / cutting means 4, and the film end FE is used. Against Irumu F, at any time, to return to the state that can be welded-blown. Since the film raw fabric G for waiting as such a reserve can be mounted on the film holder 1 at the lower feeding position K, the film F can be mounted easily.

  In the above-described film joining process by welding / cutting, the film F to be used is always drawn from the lower feeding position K, while the film end FE to be connected is drawn from the upper standby position K. The joining state (vertical relationship) of F and F is always constant. Therefore, the joint portion can be made to correspond to the inner surface of the package, and it is difficult to turn over in the packaging process. Moreover, since welding and fusing are performed at the joined portion, sufficient sealing strength and joining strength can be obtained. That is, in the case of laminated films, welding of sealant layers having a welding width capable of obtaining sufficient bonding strength and cutting of sealant layers and base film layers having a high sealing effect are performed. Even in the case of heat-weldable single-layer films, welding between films having a welding width that provides sufficient bonding strength and fusing between films are performed. In addition, the laminated film and the heat-weldable single layer film can be joined. In that case, the same effect can be obtained by making the single layer film correspond to the sealant layer of the laminated film. In addition, although the welding width can be set to about 1.5-2 mm, for example, it is not limited to this.

(2) The film F is a laminated film having a base film layer F1 and a sealant layer F2, and the film holding means 2 holds the end portion of the film F folded with the sealant layer F2 facing outward. The holding part 21 for performing and the moving means 22 for moving this holding part 21 may be provided. In this way, for example, by rotating the film holding means 2 by 180 °, the sealant layers F2 and F2 can be welded and melted in correspondence with each other. And when performing welding / cutting, the holding means 21 can be made to correspond to the welding / melting means 4 with high positional accuracy by the moving means 22. Further, it is possible to prevent the film holding means 2 and 2 from hindering the rotation operation of the rotation support 3.

(3) The pair of film holders 1, 1 and the film holding means 2, 2, the rotation support 3 that supports the pair of film holders 1, 1 and the film holding means 2, 2, and the rotation support The driving means 31 for rotating 3 and the welding / cutting means 4 may be provided on a machine base 5 that can be installed independently on the ground. In this way, for example, the machine base 5 can be moved to correspond to a desired packaging machine, so that versatility (compatibility) is further improved.

(4) The pair of film holders 1, 1 and the film holding means 2, 2, the rotation support 3 that supports the pair of film holders 1, 1 and the film holding means 2, 2, and the rotation support The driving means 31 for rotating 3 and the welding / melting means 4 may be covered with a sealable casing 6 that can be opened and closed. In this way, even when dust is generated from the brake shoes provided on the film holders 1 and 1 when the film F is unwound, scattering to the surroundings is prevented, and hygiene of the work environment is maintained. . Further, since the inside of the casing 6 is kept in a sealed state, it can be used as a clean storage place for the film raw fabric G. For example, even if the work is stopped with the replacement film original G mounted on the film holder 1, it is not necessary to move it to another storage location, and the film original G is stored as it is. When the work is resumed, it can be operated immediately, saving labor and time required for setup, and it is not necessary to secure a separate film storage place in the work place or the like.

(5) On the downstream side of the welding / melting means 4, a film tension portion 7 for adjusting the feeding amount of the fed film may be provided. In this way, since the film feed amount to the packaging machine can be ensured even when the film is stopped during the welding / melting operation, the packaging operation can be continued. Further, if the entire configuration including the film tension portion 7 is provided in the machine base 5, the versatility (compatibility) of the apparatus is further improved. Further, by covering the entire structure with a sealable casing 6 that can be opened and closed, adverse effects such as adhesion of foreign matter to the film can be prevented.

(6) The welding / cutting means 4 may include a welding heater wire 8 and a fusing nichrome wire 9. If it does in this way, welding and fusing can be performed at the same time, and it is possible to join the films with high joining strength without requiring a film cutting means such as a cutter, and to remove unnecessary film ends from the joining part. Can be separated.

(7) The film terminal detecting means 10 disposed in the preceding stage of the welding / melting means 4 and the film bonding timing detecting means 11 disposed in the subsequent stage of the welding / melting means 4 may be provided. If it does in this way, the terminal of the film F in use can be detected reliably by the film terminal detection means 10, and the timing (for example, printing pattern) which should be joined by the film joining timing detection means 11 at that time By grasping, the film terminal can be bonded to an appropriate position. In addition, the amount of unused film can be extremely reduced.

  An automatic film exchange apparatus according to the present invention includes a pair of film holders corresponding alternately to an upper standby position and a lower feeding position, and a film fed from a film original held by the film holder at the standby position. A pair of film holding means that hold the ends and rotate together with the film holder, and the film ends pulled out from the original film held by the film holder in the upper standby position are welded and cut Since the film end corresponds to the means, the film end portion is welded / fused as needed to the film fed from the film raw material held by the film holder at the lower feeding position and passing through the welding / melting means. Can do.

  Therefore, not only when the original film at the feeding position has been used, but also when changing the pattern of the film F in the middle or when trouble occurs, it is easy to operate the welding and fusing means, Since welding and fusing can be performed, the labor and time required for the setup change can be greatly reduced, and the increase in speed can be dealt with. In addition, the film holder holds the original film according to the specifications of the packaging machine to be connected (film width, etc.), so that it can be adapted to different specifications at any time. improves. In addition, since the film raw material for standby as a spare can be mounted on the film holder at the lower feeding position, the film mounting operation is facilitated.

  Moreover, since the joining state in the junction part of both films becomes always constant, the film joining can be made to correspond to the inner surface of a package, and it becomes difficult to turn over during a packaging operation. In addition, since welding and fusing are performed at the joint, sufficient sealing strength and bonding strength can be obtained, and the laminated films, the heat-weldable single-layer films, or the laminated film and the heat-weldable. Single layer films can also be joined.

Hereinafter, an automatic film exchange apparatus according to the best embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a front view of an automatic film changing apparatus, FIG. 2 is a side view, FIG. 3 is a plan view, and FIG. As shown in these drawings, this automatic film changer is a rotating support body that is rotated in a vertical direction on a support frame 51 erected on a machine base 5 that can be installed independently on the ground. 3 is supported, and the rotation support 3 holds a pair of film holders 1 and 1 that hold the original film G and alternately correspond to an upper standby position T and a lower feeding position K, and a film end A pair of film holding means 2 and 2 for holding the part FE is fixedly supported in directions different in phase by 90 °. The film holder 1 is provided with a brake shoe 1a capable of adjusting a tightening force (braking force). Further, legs 5 a whose levels can be adjusted are attached to the four corners of the machine base 5.

  As shown in FIGS. 1 and 4, when one of the film holders 1 is at the lower feeding position K, the film F fed from the film raw fabric G at the feeding position K is welded / melting means 4 and film tension. Connected to the packaging machine P via the part 7, one of the film holding means 2 retracts to the retracted position S and retains the film end FE drawn from the original film G at the upper standby position T. The other film holding means 2 corresponds to the welding / melting means 4.

  The support shaft 3 a of the rotating support 3 is supported by a bearing 51 a provided on the support frame 51, and the support shaft 3 a is connected to the driving means 31 by transmission. The drive means 31 includes a drive source (motor) 32, a transmission mechanism 33 such as a winding transmission mechanism and a gear transmission mechanism, a control panel 34 for controlling and driving the drive source 32, and the drive source 32 and the transmission mechanism 33 are casings. The driving means 31, the welding / cutting means 4 and the film tension portion 7 are disposed on the machine base 5. And these and the above-mentioned pair of film holders 1, 1, film holding means 2, 2 and rotation support 3 are covered with an openable / closable casing 6 erected on the machine base 5. .

  The film holding means 2 has a film end FE sandwiched by a clip c or the like c (FIGS. 5 and 6) at the tip of a substantially L-shaped support member 23 (see FIG. 3) in plan view fixed to the rotation support 3. And a moving means 22 including an air cylinder that moves the holding part 21 to correspond to the welding / melting means 4. The holding portion 21 has an abutting portion 21a in which a sheet metal material is attached to a lower portion of an angle member having a rectangular cross section and a plate-like portion 21b extending inward (see an enlarged view of FIG. 4 and FIG. 5A). The film end FE wound around the contact portion 21a is fixed to the plate-like portion 21b by the clamping means c. When the holding means 21 expands the moving means 22 at a position corresponding to the welding / cutting means 4, the holding part 21 advances between the upper and lower guide rollers R1, R2, and the abutting portion 21a is welded. It arrange | positions in the position right above the fusing means 4 (refer the enlarged view of FIG. 4). As shown in FIGS. 5 (a) and 5 (b), the welding / melting means 4 includes welding heater wires 8 and fusing nichrome wires 9 arranged in parallel, an air cylinder for pushing them upward, and the like. As shown in FIG. 4, for example, a film terminal detecting means 10 (10a, 10b) comprising a light emitting element and a light receiving element is disposed in the preceding stage of the welding / cutting means 4, and a subsequent stage. For example, film bonding timing detection means 11 (11a, 11b) including a light emitting element and a light receiving element is disposed.

  In the automatic film changing apparatus configured as described above, first, the film original fabric G composed of the laminated film F having the base film layer F1 and the sealant layer F2 is held by the film holder 1 at the lower feeding position K, The film end portion FE is held by the holding means c such as a clip on the one film holding means 2 retracted to the retracted position S, with the sealant layer F2 turned outward. Next, when the rotation support 3 is rotated counterclockwise in the drawing and the original film G is moved to the upper standby position T, the film end FE corresponds to the fusing / cutting means 4, so that time When the moving means 22 is operated to move the holding part 21 to the outside, the film end FE can be made to correspond to the position directly above the welding / melting means 4 with high accuracy. Next, the original film G is held by the film holder 1 moved to the lower feeding position K, and the film F fed from the original film G is connected to the packaging machine side via the welding / melting means 4. Then, the packaging operation can be started.

  In this state, since the film end FE drawn from the original film G at the upper standby position T is waiting at a position where welding / melting is possible immediately above the welding / melting means 4, the film end FE is stopped. Can be welded and melted at any time with respect to the film F fed from the original film G at the lower feeding position K. Therefore, the welding / melting means 4 is operated not only when the original film G at the feeding position K has been used up, but also when it is desired to change the pattern of the film F or when trouble occurs. In other words, the film F fed out to the waiting film end FE is welded and fused by energizing the welding heater wire 8 and the fusing nichrome wire 9 and pushing up by the pushing-up means 41. be able to.

  Since the accumulating roller 7a of the film tension portion 7 moves to the left in the figure for a short time during the welding / cutting, the shortage of the feeding amount including the stop time of the film F is compensated. The packaging operation can be continued as it is without decreasing the feeding speed of the film F to P. Therefore, since welding and fusing can be easily performed without interrupting the packaging operation, the labor and time required for the setup change can be greatly reduced, and the increase in speed can be dealt with. In addition, the film holders 1 and 1 can hold the original film G that matches the specifications (film width, etc.) of the packaging machine to be connected. And versatility (compatibility) is improved. In addition, about the timing of joining in the case of joining the films F and F when the film original fabric G is used up, it is the time when the terminal of the film F in use is detected by the film terminal detecting means 10. The film terminal can be bonded to an appropriate position by grasping the timing (for example, printed pattern) to be bonded by the film bonding timing detection means 11.

  After completion of welding and fusing (after completion of joining of the laminated films F and F), the cut film end FE held by the film holding means 2 is removed by the clamping means c such as a clip, and the upper standby position T While the film F fed out from the film stock G held in the film holder 1 is used, the film stock G or paper tube held in the film holder 1 in the lower feed position K is used. Then, the film holder 1 holds the new film original G, and the film end FE drawn from the film original G is held by the one film holding means 2 retracted to the retracted position S. When the rotation support 3 is rotated counterclockwise and the film holder 1 is moved to the upper standby position T, the film holder at the upper standby position T is moved. The film 1 is moved to the feeding position K and the film F is continuously used, and the film end FE held by one of the film holding means 2 corresponds to the welding / cutting means 4, and the film The end FE is ready to be welded / cut to the film F being used. As described above, the film F can be attached for standby as a preliminary use at the feeding position K where the film holder 1 is located at a lower position, so that the film F can be easily attached.

  In the above-described film joining process by welding / cutting, the film F to be used is always drawn from the lower feeding position K, while the film end FE to be connected is drawn from the upper standby position K. The joining state of F and F is always constant. Therefore, the joint portion can be made to correspond to the inner side surface of the package, and it is difficult to turn over in the packaging machine P. In addition, since welding and cutting are performed at the joint, sufficient joint strength and seal strength can be obtained. That is, in the case of the laminated films F and F, as shown in FIG. 5 (c), the welding w of the sealant layers F2 and F2 having a welding width capable of obtaining sufficient bonding strength (by the welding heater wire 8). ) And fusing (by the fusing nichrome wire 9) between the sealant layers F2 and F2 and the base film layers F1 and F1 having a high sealing effect. The welding width B is determined by the width of the welding heater wire 8, and about 1.5 to 2 mm can be secured, so that sufficient bonding strength can be obtained with certainty. Moreover, since the four film layers are integrated by fusing f and the outside of the joint is sealed in a bag shape, high sealing performance can be obtained. The length L of the joint portion can be set to about 10 to 15 mm, for example, but is not limited thereto. In the case of heat-weldable single-layer films, sufficient bonding strength and sealing strength can be obtained similarly. Further, the laminated film and the heat-weldable single layer film can be joined. In that case, the single layer film may be made to correspond to the sealant layer F2 of the laminated film.

  An example of a specific implementation of the joining process by the welding / melting means 4 will be described step by step with reference to FIGS. 6 (a) to 6 (b). First, when the packaging machine P is in operation, the feeding is performed. The film end FE stands by at a position immediately above the welding / cutting means 4 through the film F fed out from the position K, and can be joined at any time (see (a)). In such a standby state, when the welding heater wire 8 and the fusing nichrome wire 9 are energized and the push-up means 41 is activated, the fed film F is pressed against the film end FE to be welded and cut ((b See)). In the meantime, the film F temporarily stops. However, as described above, since the extension amount of the film F is adjusted by the film tension portion 7, the packaging machine P can continue the packaging operation as it is. When welding and fusing are completed, the welding heater wire 8 and the fusing nichrome wire 9 are lowered (see (c)), and this time, the film F is fed out from the standby position T, while the holding portion 21 of the film holding means 2. The film end portion FE held by the clip means or the like clamping means c is joined to the end of the used film F and remains (see (d)). In addition, since the film edge part FE is hold | maintained at the holding | maintenance part 21 with the clamping means c, such as a clip, the isolation | separation by fusing becomes reliable and generation | occurrence | production of the trouble by inadequate isolation | separation can be avoided.

  Subsequently, the moving means 22 is contracted to separate the holding part 21 from the welding / cutting means 4, and the holding means c such as a clip is removed (see (e)) to hold the residual film including the film end FE. The paper tube is removed from the film holder 1 at the feeding position K, and a new spare film original G is mounted, and the film end FE is held by the film holding means 2 at the retracted position S. After being held on the plate-like portion 21b of the portion 21 by a clamping means such as a clip, the illustration is omitted, but the film support G at the standby position T is fed out by rotating the rotation support body 3 counterclockwise. When the film F is moved out by moving to the position K, the preliminary film original G moves to the upper standby position T, and the film end FE held by the film holding means 2 is opposed to the welding / cutting means 4. When actuating the moving means 22 at the time of the by adapt the film edges FE to a position directly above the welding, fusing unit 4 returns to the state shown in FIG.

  In the automatic film exchange apparatus configured as described above, the entire apparatus is covered with a sealable casing 6 that can be opened and closed. Therefore, when the film F is fed out, the brake shoe 1a provided on the film holder 1 is used. Even if dust is generated, scattering to the surroundings is prevented and hygiene of the work environment is maintained. Further, since the inside of the casing 6 is kept in a sealed state, it can be used as a clean storage place for the film raw fabric G. For example, even if the work is stopped with the replacement film original G mounted on the film holder 1, it is not necessary to move it to another storage location, and the film original G is stored as it is. When the work is resumed, it can be operated immediately, saving labor and time required for setup, and it is not necessary to secure a separate film storage place in the work place or the like.

  The casing 6 is formed in a box shape by stretching a plastic material such as a transparent acrylic resin on a frame mounted on the machine base 5 as shown in FIGS. However, the present invention is not limited to this, and at least the pair of film holders 1 and 1 and the film holding means 2 and 2 and the pair of film holders 1 and 1 and the film holding means. If the rotation support body 3 that supports 2 and 2, the drive means 31 that rotates the rotation support body 3, and the welding / melting means 4 can be covered in a sealed state and can be opened and closed Regardless of its form, configuration, or material. In the illustrated example, the open / close door 61 is composed of an outer plate 62 and an inner plate 63, and the outer plate 62 is respectively inserted into three vertical frames 64 constituting a front frame formed in a rectangular shape via three hinges 65. The inner side plate 63 is attached to the outer side plate 62 via the three hinges 65 so as to be openable and closable outwardly. The open / close end of the inner side plate 63 is opened and closed. A handle 66 is attached to each side.

  It should be noted that the present invention is not limited to the embodiment, and it is free to make design changes and improvements as necessary, as long as it does not depart from the gist of the invention. A caster may be attached to make the automatic film changer moveable so that it can respond quickly to the packaging machine P to be connected, and the casing 6 is removed particularly in a clean operating environment. Also good.

It is a front view of the film automatic exchange apparatus which concerns on embodiment of this invention. It is the same side view. It is the same top view. It is the principal part enlarged view. (A) is a corresponding view of the film end and welding / cutting means, (b) is a plan view of the welding / cutting means, and (c) is a cross-sectional view of a connection portion of the laminated film. (A)-(e) is the stepwise explanatory drawing of the joining process. It is sectional drawing which shows an example of the conventional junction part, (a) is a cutting process, (b) is sectional drawing for demonstrating a welding process.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Film holder, 2 ... Film holding means, 3 ... Rotating support body, 31 ... Driving means, 4 ... Welding and fusing means, 5 ... Machine stand, 6 ... Casing, 7 ... Film tension part, 8 ... Heating heater Wire, 9 ... nichrome wire for fusing, 10 ... film end detection means, 11 ... film joining timing detection means 11, F ... film, FE ... film end, T ... standby position, K ... feeding position, G ... film original , S: Retraction position

Claims (7)

A pair of film holders (1) and (1) that respectively hold the original film (G) and are rotated to alternately correspond to the upper standby position (T) and the lower feeding position (K);
A pair of film holders integrated with the pair of film holders (1) and (1) in order to hold the film end (FE) drawn from the original film (G) at the standby position (T). Means (2) (2);
The film (F) fed out from the film original fabric (G) at the feeding position (K) is routed through the film (F) and pulled out from the film original fabric (G) at the standby position (T). Welding and fusing means (4) for fusing and fusing the film end (FE), and
When one of the film holders (1) is at the feeding position (K), one of the film holding means (2) is retracted to the retracted position (S) and the original film at the standby position (T) ( The film automatic changer characterized in that the other film holding means (2) holding the film end (FE) drawn out from G) corresponds to the welding and fusing means (4).   The film (F) is a laminated film including a base film layer (F1) and a sealant layer (F2), and the film holding means (2) is folded with the sealant layer (F2) facing outward. The holding part (21) for holding the edge part of a film (F), and the moving means (22) for moving this holding part (21) are provided, The Claim 1 characterized by the above-mentioned. The automatic film changing apparatus as described.   The pair of film holders (1) (1) and the film holding means (2) (2) and the rotation support for supporting the pair of film holders (1) (1) and the film holding means (2) (2) The body (3), the drive means (31) for rotating the rotation support body (3), and the welding / cutting means (4) are provided on a machine base (5) that can be installed independently on the ground. The automatic film changer according to claim 1 or 2, wherein   The pair of film holders (1) (1) and the film holding means (2) (2) and the rotation support for supporting the pair of film holders (1) (1) and the film holding means (2) (2) The body (3), the driving means (31) for rotating the rotating support (3), and the welding / melting means (4) are covered with an openable / closable sealed casing (6). An automatic film exchange apparatus according to any one of claims 1 to 3.   The film tension part (7) for adjusting the feed amount of the film fed out is provided in the downstream of the said welding and cutting | disconnection means (4), The Claim 1 thru | or 4 characterized by the above-mentioned. Automatic film changer.   6. The automatic film exchange apparatus according to claim 1, wherein the welding / cutting means (4) includes a welding heater wire (8) and a fusing nichrome wire (9).   A film terminal detection means (10) disposed upstream of the welding / melting means (4); and a film bonding timing detection means (11) disposed downstream of the welding / melting means (4). An automatic film exchange apparatus according to any one of claims 1 to 6, further comprising:

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