JP2013233966A - Film cassette for packaging - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a film cassette for packaging that allows operation of mounting a film roll in a packaging device to be efficiently performed.SOLUTION: A cassette case 25 of a film cassette 21 houses therein a film roll 22. The cassette case 25 rotatably supports the film roll 22. A protruding portion 257 of the cassette case 25 includes, on the lower end thereof, a film discharge opening 26 from which a film 24 pulled out from the film roll 22 is conveyed to the outside of the cassette case 25. In the film discharge opening 26, a film guide roller 23 is provided in the film discharge opening 26, along an axial line direction. The film 24 pulled out from the film roll 22 is discharged to the outside from the film discharge opening 26 through a rear side of the film guide roller 23.

Description

  The present invention relates to a packaging film cassette incorporating a packaging film for packaging a packaging object.

  Conventionally, a packaging apparatus for packaging a product is known. For example, the packaging machine of patent document 1 conveys a product with a conveyor, and overlaps a product with a plastic film in the conveyance process. And a packaging machine heats a plastic film with a heat seal member etc., and wraps a product with a plastic film. The plastic film is drawn out from a film roll around which the plastic film is wound, and is conveyed while being positioned by a roller on a conveyance path, and used for packaging.

JP-A-1-111604

  However, when a film roll on which a plastic film is wound is mounted on a packaging device, it is necessary to peel off the film that is in close contact with the film roll from the film roll and to form a transport path via a plurality of rollers. In this case, the film once peeled off from the film roll may stick to the film roll, and there is a problem that the operation of mounting the film roll on the packaging device cannot be performed efficiently.

  The objective of this invention is providing the film cassette for packaging which can perform the operation | work which mounts | wears a film roll with a packaging apparatus efficiently.

  A packaging film cassette according to the present invention extends in the axial direction, a film roll wound with a packaging film, a cassette case that accommodates the film roll therein and rotatably supports the film roll, And a roller portion provided along the axial direction at an outlet where the film drawn from the film roll is conveyed to the outside of the cassette case. In this case, a film roll is disposed in the cassette case. And the film pulled out from the film roll passes along the side of a roller part, and is pulled out outside from the exit of a cassette case. That is, the leading edge of the film is located outside the cassette case. In this case, since the cassette case is located between the leading end of the film and the film roll, the leading end of the film once pulled out is prevented from sticking to the film roll. Therefore, the operation | work which mounts | wears a packaging apparatus with a film roll can be performed efficiently.

  In the packaging film cassette, the roller portion includes a shaft portion extending in the axial direction at a central portion of the roller portion, and a cylindrical member provided rotatably around the shaft portion, and provided in a plurality in the axial direction. And may be provided. Since the film expands and contracts, the speed of the film passing through the roller portion may be different for each part of the film in the axial direction. Even in this case, since the roller portion is provided with a plurality of rotatable cylindrical members, the individual cylindrical members can rotate following the portions of the film having different speeds. Therefore, the film can be pulled out smoothly.

  The packaging film cassette is located on the outer side in the axial direction of the film roll, and is provided in the cassette case and is exposed to the outside, the first gear rotating with the rotation of the film roll. You may provide a hole. In this case, the first gear is meshed with the gear provided outside the packaging device side, for example, the film roll is regulated by applying a power to rotate the film roll by regulating the rotation speed of the film roll. be able to.

  In the packaging film cassette, the first gear may be meshable with a second gear that is provided in the packaging device and whose rotational speed is restricted. In this case, since the rotation speed of the second gear is regulated, the rotation speed of the first gear is regulated. For this reason, the rotational speed of the film roll is regulated. Therefore, tension is generated on the film when the film is pulled out. Therefore, the film can be conveyed in a state where an appropriate tension is applied, and the film is more likely to be in close contact with the packaging object as compared with a case where no tension is applied to the film.

It is a perspective view from the front of the packaging apparatus 1 in which the film cassette 21 was mounted. It is a perspective view from the back of the packaging apparatus 1 in which the film cassette 21 was mounted. It is a figure which shows the internal structure of the film cassette 21 and the packaging apparatus 1. FIG. It is a perspective view from the front of the film cassette 21. FIG. It is a perspective view from the back of film cassette 21. FIG. 3 is a perspective view showing the internal structure of the film cassette 21 with the right half of the cassette case 25 as a cross section. 2 is a cross-sectional view of a film cassette 21. FIG. 2 is a plan view of a film cassette 21. FIG. 4 is a plan view of a film guide roller 23. FIG. 4 is a perspective view of one cylindrical member 232 of the film guide roller 23. FIG. It is a 1st figure which shows the process in which the packaging target object 3 and the base 80 are packaged. It is a 2nd figure which shows the process in which the packaging target object 3 and the base 80 are packaged. It is a 3rd figure which shows the process in which the packaging target object 3 and the base 80 are packaged. It is a 4th figure which shows the process in which the packaging target object 3 and the base 80 are packaged.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the following description, the lower left side, the upper right side, the upper left side, the lower right side, the upper side, and the lower side of FIG. 1 will be described as the front side, the rear side, the left side, the right side, the upper side, and the lower side, respectively. .

  The outline | summary of the packaging apparatus 1 in which the film cassette 21 is used is demonstrated. The packaging device 1 is a device for packaging an article 3 (hereinafter referred to as a packaging object 3) placed on a pedestal 80 such as a mount with a film 24 together with a pedestal 80 having a rectangular shape in plan view (see FIG. 14). ). The packaging device 1 wraps the pedestal 80 and the packaging object 3 while conveying the pedestal 80 from the rear side toward the front side (see FIGS. 11 to 14). In the following description, the front side may be referred to as the transport direction downstream side, and the rear side may be referred to as the transport direction upstream side.

  As shown in FIG.1 and FIG.2, the packaging apparatus 1 is provided with the side-plate parts 111 and 112 standing upright from the edge part of the left-right direction of the bottom part of a rectangular shape in planar view. The side plate portion 111 is provided on the right side of the packaging device 1. The side plate portion 112 is provided on the left side of the packaging device 1. Hereinafter, the side plate portions 111 and 112 are collectively referred to as the side plate portion 11. The shape of the side plate portion 11 is a substantially rectangular plate shape whose longitudinal direction is the vertical direction. The inner surfaces of the side plate portions 111 and 112 are opposed to each other. The side plate portions 111 and 112 support the film cassette 21 at the upper end and the portion sandwiched between the side plate portions 111 and 112. Further, slits 17 are provided on the inner surfaces of the side plate portions 111 and 112. The slit 17 extends in the up-down direction substantially at the center in the transport direction of the left and right side plate portions 11.

  A gear 113 is provided at the upper ends of the side plate portions 111 and 112 (see FIGS. 1 and 2). 1 and 2, only the gear 113 at the upper end of the side plate portion 111 is illustrated. When the film cassette 21 is disposed at the upper end of the side plate portions 111 and 112, the gear 113 meshes with the gear 273 of the film cassette 21 (see FIG. 8). The rotation speed of the gear 113 is regulated by a clutch spring (not shown).

  The film cassette 21 accommodates therein a film roll 22 around which a film 24 is wound (see FIG. 7). Details of the film cassette 21 will be described later. The pedestal 80 on which the packaging object 3 is placed is conveyed and packaged from below the film cassette 21 and between the side plate portions 111 and 112 from the upstream side toward the downstream side in the conveyance direction.

  As shown in FIG. 1, the side plate portion 11 supports the first cradle 12 at the end portion on the downstream side in the transport direction. The shape of the first cradle 12 is a substantially rectangular plate shape whose longitudinal direction is the left-right direction in plan view. When the pedestal 80 is transported between the side plate portions 111 and 112 from the upstream side toward the downstream side in the transport direction and the packaging with the film 24 is completed, the first cradle 12 receives the pedestal 80 whose packaging is completed on the upper surface. . Hereinafter, the upper surface of the first cradle 12 is referred to as a first support surface 14. The first support surface 14 is located on the downstream side in the transport direction of the transport unit 40 (described later), and supports the base 80 transported by the transport unit 40. Guide portions 16 are provided at the left and right ends of the first cradle 12. The guide portion 16 includes a groove portion 164 that is recessed in the left-right direction at the lower end. The pedestal 80 is guided along the groove 164.

  As shown in FIG. 2, the side plate portion 11 supports the second receiving tray 13 at the end portion on the upstream side in the transport direction. The shape of the second receiving tray 13 is a substantially rectangular plate shape whose longitudinal direction is the left-right direction in plan view. The second receiving tray 13 supports the pedestal 80 transported from the upstream side in the transport direction toward the side plate portions 111 and 112 on the upper surface. Hereinafter, the upper surface of the second cradle 13 is referred to as a second support surface 15. The second support surface 15 is located on the upstream side of the transport unit 40 in the transport direction, and supports the pedestal 80 transported by the transport unit 40.

  As shown in FIGS. 1 and 2, the first support surface 14 of the first cradle 12 and the second support surface 15 of the second cradle 13 form the same plane. The base 80 on which the packaging object 3 is placed is transported from the upstream side toward the downstream side in the transport direction on the formed plane. In the following description, the plane formed by the first support surface 14 of the first cradle 12 and the second support surface 15 of the second cradle 13 through which the pedestal 80 to be transported passes is referred to as the transport surface. That's it.

  The internal structure of the packaging device 1 will be described with reference to FIGS. 1 to 3, 11, and 13. As shown in FIG. 3, the packaging device 1 includes a transport unit 40 on the left and right side plate portions 11. The conveyance unit 40 includes a conveyance roller 41 and an urging roller 42. The conveyance roller 41 is provided below the conveyance surface, and the urging roller 42 is provided above the conveyance surface. The conveyance roller 41 and the urging roller 42 are opposed to each other with the conveyance surface interposed therebetween.

  The conveyance roller 41 and the urging roller 42 are in contact with the left and right ends of the base 80. The conveyance roller 41 is, for example, a gear-shaped roller. The transport roller 41 rotates in contact with the pedestal 80 from below. The urging roller 42 is, for example, a wheel-like rubber roller. The urging roller 42 urges the left and right end portions of the pedestal 80 below while being in contact with the pedestal 80 from above. The base 80 sandwiched between the transport roller 41 and the urging roller 42 is transported from the upstream side toward the downstream side in the transport direction by the rotation of the transport roller 41.

  As shown in FIGS. 1 to 3, the packaging device 1 includes guide rollers 71 and 73. The guide rollers 71 and 73 are provided between the side plate portions 111 and 112 and below the conveyance surface. The guide roller 71 is located between the second support surface 15 and the transport unit 40. The guide roller 73 is located between the first support surface 14 and the transport unit 40.

  The guide roller 71 includes a shaft portion 711 and a plurality of roller portions 712. The guide roller 73 includes a shaft portion 731 and a plurality of roller portions 732. The shaft portions 711 and 731 are bridged between the side plate portions 111 and 112. The plurality of roller portions 712 are provided at equal intervals in the axial direction of the shaft portion 711. The plurality of roller portions 732 are provided at equal intervals in the axial direction of the shaft portion 731. The guide rollers 71 and 73 support the pedestal 80 conveyed by the conveying roller 41 and the urging roller 42 between the first receiving tray 12 and the second receiving tray 13 from below. The guide rollers 71 and 73 guide the pedestal 80 transported from the upstream side to the downstream side in the transport direction from the second base 13 to the first base 12.

  As shown in FIG. 3, the packaging device 1 includes a holding roller 72 on the upstream side of the transport unit 40 and below the transport surface. The shape of the holding roller 72 is a cylindrical shape. The holding roller 72 extends in the left-right direction. The left and right ends of the holding roller 72 are rotatably supported by the holding unit 61. The holding part 61 can swing. The holding unit 61 is divided into a state in which the holding roller 72 is arranged on the downstream side in the conveying direction of the guide roller 71 (see FIG. 12) and a state in which the holding roller 72 is separated downward from the guide roller 71 (see FIG. 13). Can be switched. The holding roller 72 can sandwich the film 24 drawn from the film cassette 21 with the guide roller 71 in a state where the holding roller 72 is arranged on the downstream side in the transport direction of the guide roller 71.

  As shown in FIGS. 3 and 11, the packaging device 1 includes a cutting part 77. The cutting part 77 includes a blade part 771 (see FIG. 11) protruding upward from the upper surface. The blade portion 771 extends in the left-right direction. A guide rail 74 is inserted through the cutting portion 77. The guide rail 74 is provided between the side plate portions 111 and 112 and below the guide roller 73. The guide rail 74 is bridged between the side plate portions 111 and 112. When the cutting part 77 moves in the left-right direction along the guide rail 74, the blade part 771 cuts the film 24.

  As shown in FIGS. 3 and 11, the packaging device 1 includes a guide roller 31 and an auxiliary roller 32. The shapes of the guide roller 31 and the auxiliary roller 32 are substantially cylindrical. The guide roller 31 and the auxiliary roller 32 extend in the left-right direction. The left and right end portions of the guide roller 31 are detachably supported by the first support portion 33. The left and right end portions of the auxiliary roller 32 are supported by the first support portion 33.

  The first support portion 33 is movable in the vertical direction along the slit 17 (see FIGS. 1 and 2). As the first support portion 33 moves in the vertical direction along the slit 17, the guide roller 31 and the auxiliary roller 32 move in the vertical direction (see FIGS. 12 and 13). Hereinafter, the path of the guide roller 31 in the case where the guide roller 31 moves in the vertical direction as the first support portion 33 moves along the slit 17 may be referred to as a first path.

  3 and 11 show a state in which the first support portion 33 has moved to the top of the first path. As shown in FIG. 3, with the first support portion 33 moved to the top of the first path, the first support portion 33 is placed on the left and right sides of the film cassette 21 (see FIG. 1) in which the film 24 is accommodated. Deploy. As shown in FIGS. 3 and 11, the guide roller 31 and the auxiliary roller 32 are positioned above the transport surface and below the film cassette 21 with the first support portion 33 moved to the uppermost position.

  FIG. 13 shows a state where the first support portion 33 (see FIG. 3) has moved to the lowest position. The packaging device 1 includes a second support portion 51 and a holding portion 61 below the guide roller 31 and the auxiliary roller 32 in a state where the first support portion 33 has moved to the lowest position (see FIG. 3). The second support part 51 is movable in the transport direction. The second support portion 51 supports the guide roller 31 separated from the first support portion 33. As the second support portion 51 moves in the transport direction, the guide roller 31 moves in the transport direction (see FIGS. 13 and 14). Hereinafter, the path of the guide roller 31 when the guide roller 31 moves in the transport direction by the movement of the second support portion 51 may be referred to as a second path. As the first support part 33 and the second support part 51 move, the guide roller 31 moves along the first path and the second path.

  The film cassette 21 will be described with reference to FIGS. In the following description, the lower left side, the upper right side, the upper left side, the lower right side, the upper side, and the lower side of FIG. 4 are described as the front side, the rear side, the left side, the right side, the upper side, and the lower side of the film cassette 21, respectively. .

  As shown in FIGS. 3 to 8, the film cassette 21 includes a film roll 22 (see FIG. 6), a cassette case 25, and a film guide roller 23. The cassette case 25 accommodates the film roll 22 inside. The cassette case 25 supports the film roll 22 in a rotatable manner. The film roll 22 is cylindrical and extends in the left-right direction. In the following description, the left-right direction of the film cassette 21 may be referred to as the axial direction. As shown in FIGS. 3 and 7, the film roll 22 includes a cylindrical core portion 221 at the center, and a packaging film 24 is wound around the core portion 221.

  As shown in FIG. 6, fixing members 27 are fixed to both ends of the film roll 22 in the axial direction (left-right direction). In FIG. 6, only the right side fixing member 27 is illustrated. The fixing member 27 includes a wall portion 271, a cylindrical portion 272, and a gear 273. The wall portion 271 has a circular plate shape in a side view, and is disposed at the left and right ends of the film roll 22.

  The cylindrical portion 272 protrudes from the wall portion 271 toward the inner side in the left-right direction of the film roll 22 with a predetermined length. The cylindrical part 272 has a diameter along the inner periphery of the core part 221 of the film roll 22. The fixing member 27 is fixed to the film roll 22 by fitting the cylindrical portion 272 to the inner periphery of the core portion 221. From the central part of the wall part 271, a cylindrical shaft part (not shown) projects outward in the axial direction. The shaft portion is fixed to the wall portion 271. The gear 273 is fixed around the shaft portion. That is, the gear 273 is located on the outer side in the axial direction of the film roll 22. The gears 273 of the left and right fixing members 27 are positioned inside the left and right protrusions 253 and 254 (described later) of the cassette case 25 (see FIG. 8). When the film roll 22 is rotated by pulling out the film 24, the fixing member 27 is rotated. For this reason, the gear 273 rotates.

  As shown in FIG. 4, the cassette case 25 includes an upper cassette case 251 and a lower cassette case 252. The cassette case 25 is rounded in a side view, and a rear end portion projects downward (see FIGS. 5 and 7). As shown in FIG. 8, a protruding portion 253 that protrudes toward the right in the axial direction is provided on the right surface of the cassette case 25 in the axial direction. A protruding portion 254 that protrudes toward the right in the axial direction is provided on the left surface of the cassette case 25 in the axial direction. A hole 255 is provided on the front surface of the protrusion 253. A hole 256 is provided on the front surface of the protruding portion 254. The holes 255 and 256 of the protrusions 253 and 254 expose the left and right gears 273 to the outside.

  As shown in FIGS. 5 and 7, a lower portion of the rear end portion of the cassette case 25 is provided with a protruding portion 257 that protrudes downward in the axial direction. The protrusion 257 includes a film discharge port 26 through which the film 24 drawn from the film roll 22 is conveyed to the outside of the cassette case 25 (see FIG. 7). The film discharge port 26 is a hole in which the lower end of the projecting portion 257 is opened in the axial direction.

  As shown in FIGS. 6 and 7, the film guide roller 23 is provided in the film discharge port 26 along the axial direction. As shown in FIG. 9, the film guide roller 23 includes a shaft portion 231 and a cylindrical member 232. The shaft portion 231 extends in the axial direction at the center of the film guide roller 23. As shown in FIGS. 4 and 5, the left and right end portions of the shaft portion 231 are supported by a hole portion 258 provided in the axial direction at the lower end portion of the protruding portion 257. The shaft portion 231 does not rotate, but the shaft portion 231 may be rotatable.

  As shown in FIG. 10, the cylindrical member 232 is formed in a cylindrical shape having a hole in the center. As shown in FIG. 9, a plurality (five) of cylindrical members 232 are rotatably provided around the shaft portion 231. The plurality of cylindrical members 232 are arranged in the axial direction. As shown in FIG. 7, the film 24 drawn from the film roll 22 passes through the rear side of the film guide roller 23 and is drawn out from the film discharge port 26. When the film 24 is pulled out, the cylindrical member 232 rotates as the film 24 is pulled out by contact resistance with the film 24.

  As shown in FIGS. 5 and 7, a recess 259 that is recessed upward is provided on the front side of the protruding portion 257 of the cassette case 25. When the cassette case 25 is mounted on the packaging device 1, the auxiliary roller 32 is positioned in the recess 259 (see FIG. 11).

  With reference to FIGS. 11-14, the operation | movement of the packaging apparatus 1 in case the packaging target object 3 and the base 80 are packaged with the film 24 is demonstrated.

  First, the user arranges the film cassette 21 on the upper end of the side plate portion 11 (see FIGS. 1 and 11). The protruding portions 253 and 254 of the film cassette 21 are supported on the upper end of the side plate portion 11. At this time, the gear 273 exposed to the outside from the holes 255 and 256 of the protrusions 253 and 254 meshes with the gear 113 provided at the upper end of the side plate portion 11 (see FIG. 1).

  The user manually pulls out the film 24 discharged from the film discharge port 26 of the film cassette 21. The user arranges the leading end of the drawn film 24 on the downstream side of the guide roller 71. The user operates the packaging device 1 so that the holding unit 61 swings and the holding roller 72 is disposed on the downstream side of the guide roller 71. As shown in FIG. 11, the leading end of the film 24 drawn from the film cassette 21 is sandwiched from both sides in the transport direction by the guide roller 71 and the holding roller 72.

  When the film 24 is pulled out, the rotation speed of the gear 113 that meshes with the gear 273 of the film cassette 21 is restricted. Therefore, the rotation speed of the film roll 22 that rotates together with the gear 273 is restricted, and the film 24 that is pulled out has a tension. Have joined. For this reason, the film 24 is in a state of extending straight in a substantially vertical direction (vertical direction) with respect to the transport surface (see FIG. 11).

  In FIG. 11, the 1st support part 33 (refer FIG. 3) is arrange | positioned at the top. The auxiliary roller 32 is located in the recess 259 of the film cassette 21. The second support portion 51 is disposed on the most upstream side in the transport direction. The cutting part 77 is arranged at the left end. The operator places the packaging object 3 on the pedestal 80. The operator places the pedestal 80 on which the packaging object 3 is placed on the second support surface 15 of the second receiving tray 13. The operator sends the pedestal 80 toward the downstream side in order to place the tip (downstream end) of the pedestal 80 in the transport unit 40. At this time, the downstream end of the pedestal 80 sequentially moves on the second cradle 13, the guide roller 71, and the holding roller 72. The downstream end of the pedestal 80 contacts the film 24.

  Further, the operator sends the pedestal 80 toward the downstream side. The downstream end of the pedestal 80 pushes the film 24 downstream. A sensor 431 (see FIG. 1) provided slightly upstream of the transport unit 40 is pressed downward by the downstream end of the base 80 and turned on. When the sensor 431 is turned on, the packaging device 1 starts rotating the transport roller 41. When the downstream end of the pedestal 80 is disposed in the transport unit 40, the transport unit 40 sandwiches the pedestal 80 from the vertical direction. The conveyance unit 40 appropriately conveys the pedestal 80 toward the downstream side.

  When the pedestal 80 moves downstream, the pedestal 80 and the downstream end of the packaging object 3 are pressed against the film 24. The film 24 is bent at the contact portion between the base 80 and the packaging object 3. The film 24 is gradually pulled out from the film cassette 21. Since the rotation speed of the gear 113 that meshes with the gear 273 of the film cassette 21 is regulated, the rotation speed of the film roll 22 that rotates together with the gear 273 is regulated, and tension is applied to the film 24 that is pulled out. For this reason, the film 24 is strongly pressed to the downstream side of the base 80 and the packaging object 3. The film 24 is in close contact with the pedestal 80 and the packaging object 3 at a position covering the pedestal 80 and the downstream side of the packaging object 3.

  When a force in a direction toward the downstream side is applied to the film 24, the leading end of the film 24 is separated from the guide roller 71 and the holding roller 72. The leading edge of the film 24 moves following the base 80 and passes between the base 80 and the holding roller 72. The leading end of the film 24 is pressed against the bottom surface of the base 80 from below by the holding roller 72. The leading end of the film 24 is bonded to the adhesive portion provided on the downstream side and the bottom surface of the base 80.

  The conveyance unit 40 continues to convey the pedestal 80 to the downstream side. When the pedestal 80 passes over the sensor 431 (see FIG. 1), the sensor 431 is turned off, and the packaging device 1 stops the rotation of the transport roller 41. As shown in FIG. 12, the film 24 is disposed at a position covering the base 80 and the upper side of the packaging object 3.

  As shown in FIGS. 12 and 13, the packaging device 1 swings the holding portion 61 in a direction in which the holding roller 72 is separated from the guide roller 71 (see an arrow 65 in FIG. 12). Next, the packaging device 1 moves the first support portion 33 from the highest position to the lowest position along the first path (see arrow 66 in FIG. 12). The guide roller 31 contacts the film 24 disposed below from above and guides it downward. The film 24 is disposed at a position covering the pedestal 80 and the upstream side of the packaging object 3.

  As shown in FIG. 13, when the first support portion 33 moves to the lowest position, the guide roller 31 is disposed in the vicinity of the downstream side of the guide roller 71. At this position, the guide roller 31 is transferred from the first support portion 33 (see FIG. 3) to the second support portion 51 (see FIG. 3). The auxiliary roller 32 is placed above the guide roller 71 when the first support portion 33 moves to the lowest position.

  As illustrated in FIGS. 13 and 14, the packaging device 1 moves the second support portion 51 from the most upstream side to the most downstream side along the second path. The guide roller 31 supported by the second support portion 51 moves on the upstream side and the bottom surface of the base 80 along the second path to the downstream side. As shown in FIG. 14, the film 24 extends downward from a position covering the pedestal 80 and the upstream side of the packaging object 3, contacts the upstream end of the pedestal 80, and flows downstream along the bottom surface of the pedestal 80. Turn to. The film 24 is pressed against the upstream side and the bottom surface of the base 80 in the process in which the guide roller 31 moves downstream. As a result, the film 24 is adhered to the adhesive portion provided at the upstream end of the bottom surface of the base 80.

  Next, the packaging device 1 moves the cutting portion 77 along the guide rail 74 from the left end to the right end. The blade portion 771 cuts a portion of the film 24 that extends from the guide roller 31 toward the auxiliary roller 32. Since the rotation speed of the gear 113 that meshes with the gear 273 of the film cassette 21 is restricted, the rotation speed of the film roll 22 that rotates together with the gear 273 is restricted, and tension is applied to the film 24 that is pulled out. For this reason, tension is also applied to the film 24 extending from the guide roller 31 toward the auxiliary roller 32. Therefore, the blade part 771 can cut the film 24 appropriately.

  The leading end of the film 24 and the end portion cut by the blade portion 771 are in a state of being attached to the bottom surface of the pedestal 80. The packaging object 3 is fixed on the pedestal 80 by the film 24. The film 24 is in close contact with the packaging object 3, and the operator cannot directly touch the packaging object 3 from the outside. The packaging object 3 is protected by the film 24. Packaging of the pedestal 80 and the packaging object 3 with the film 24 is completed.

  As described above, the base 80 and the packaging object 3 are packaged. In this embodiment, the film 24 passes through the side (rear side) of the film guide roller 23 and is drawn out from the film discharge port 26 (see FIG. 7). That is, the leading end of the film 24 is located outside the cassette case 25. In this case, since the cassette case 25 is positioned between the front end of the film 24 and the film roll 22, the front end of the film 24 once drawn out is prevented from sticking to the film roll 22. Therefore, it is not necessary to search for the tip of the film 24 attached to the film roll 22 and to remove the film 24 from the film roll 22, and the work of mounting the film roll 22 on the packaging device 1 can be performed efficiently. .

  Moreover, the packaging object 3 and the base 80 are packaged while the film 24 is pulled out. Since the film 24 expands and contracts, the speed of the film 24 passing through the film guide roller 23 may be different for each part of the film 24 in the axial direction (the width direction of the film 24). In this embodiment, since the film guide roller 23 is provided with a plurality of rotatable cylindrical members 232 (see FIG. 9), the individual cylindrical members 232 can rotate at different rotational speeds. Therefore, even when the speed of the film 24 passing through the film guide roller 23 in the axial direction is different, the individual cylindrical members 232 can rotate following the portions of the film 24 having different speeds. Therefore, the film can be pulled out smoothly.

  The film cassette 21 includes holes 255 and 256 that expose a gear 273 that rotates with the rotation of the film roll 22 (see FIG. 8). Then, the gear 273 can be engaged with the gear 113 through the holes 255 and 256 (see FIG. 1). Since the rotation speed of the gear 113 that meshes with the gear 273 of the film cassette 21 is regulated, the rotation speed of the film roll 22 that rotates together with the gear 273 is regulated, and tension can be applied to the film 24 that is drawn out. Therefore, the film 24 can be conveyed in a state where an appropriate tension is applied, and the film 24 is more likely to be in close contact with the packaging object 3 as compared with a case where the tension of the film 24 is not applied.

  In the above embodiment, the film discharge port 26 corresponds to the “exit” of the present invention, and the gear 273 corresponds to the “first gear” of the present invention. The film guide roller 23 corresponds to the “roller portion” of the present invention, and the gear 113 of the packaging device 1 corresponds to the “second gear” of the present invention.

  In addition, this invention is not limited to said embodiment, A various change is possible. For example, the gear 273 of the film cassette 21 is meshed with the gear 113 and given tension, but is not limited thereto. For example, the gear 113 of the packaging device 1 may be a rotationally driven gear, the gear 273 of the film cassette 21 may be engaged with the gear 273, and power for rotating the film roll 22 may be applied by the gear 113. Thus, since the gear 273 of the film cassette 21 is exposed to the outside through the holes 255 and 256, for example, the rotation speed of the film roll 22 is regulated to apply tension to the film 24, or the film roll 22 is rotated. Power can be applied.

  Moreover, although the cylindrical member 232 of the film guide roller 23 was provided with two or more, it is not limited to this. For example, the cylindrical member 232 may be a single cylindrical member that is long in the left-right direction. Moreover, although the film guide roller 23 was provided with the axial part 231 and the cylindrical member 232, it is not limited to this. For example, the film guide roller 23 may be a single rotatable roller.

  Moreover, although the gear 273 was provided in the film cassette 21, it is not limited to this. For example, the film cassette 21 may not be provided with the gear 273. In this case, the holes 255 and 256 may not be provided. Even in this case, if the film roll 22 is rotatably supported inside the film cassette 21, the film 24 can be pulled out and packaged. Moreover, although the gear 273 of the film cassette 21 was provided in the both ends of the axial direction, it is not limited to this. For example, the film cassette 21 may be provided with a gear 273 only on one side in the axial direction.

  Moreover, the aspect which conveys the base 80 is not limited to the case of this embodiment. For example, the pedestal 80 can be mounted on a conveying member (for example, a tray on which the pedestal 80 can be placed, a member that can be mounted on the left and right ends of the pedestal 80), and the conveying member is conveyed by the conveying unit 40. By doing so, the pedestal 80 may be conveyed.

DESCRIPTION OF SYMBOLS 1 Packaging apparatus 21 Film cassette 22 Film roll 23 Film guide roller 24 Film 25 Cassette case 26 Film discharge port 113 Gear 231 Shaft part 232 Cylindrical member 255,256 Hole part 273 Gear

Claims (4)

A film roll extending in the axial direction and wound with a packaging film;
A cassette case that houses the film roll and rotatably supports the film roll;
A packaging film cassette comprising: a roller portion provided along the axial direction at an outlet where the film drawn from the film roll is conveyed to the outside of the cassette case. The roller part is
A shaft portion extending in the axial direction at the center of the roller portion;
The packaging film cassette according to claim 1, further comprising a cylindrical member provided rotatably around the shaft portion and provided in a plurality in the axial direction. A first gear that is located on the outer side in the axial direction of the film roll, and rotates with the rotation of the film roll;
The packaging film cassette according to claim 1, further comprising a hole provided in the cassette case and exposing the first gear to the outside.   The packaging film cassette according to claim 3, wherein the first gear is meshable with a second gear that is provided in the packaging device and has a restricted rotational speed.

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