JPH0685201U - Wrapping machine - Google Patents

Abstract

(57) [Summary] [Purpose] To reduce the size. A packaging film which is wrapped around a package and sent out is cut and sealed. A seal cutting section 30 is provided. A film feeding section 7 having a chuck driving means for moving the chuck means 89 in the feeding direction of the packaging film.
5 and 76 are provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a packaging machine.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, as a packaging machine, for example, one shown in Japanese Utility Model Laid-Open No. 1-63603 is known. This packaging machine includes a cutter that cuts the packaging film wrapped around the packaging body, heaters provided on both sides of the cutter, and a chuck that is provided outside the heater and chucks the packaging film. And a film feed roller means for pulling and feeding the packaging film. Then, the packaged body after packaging is sent and discharged by a stacking machine arranged at the rear of the packaging machine. Alternatively, a dropping mechanism for opening and closing a support member that supports the package after packaging is provided and the package is discharged by opening and closing the support member.

[0003]

[Problems to be solved by the device]

 The above-mentioned conventional technique has a film feeding roller means for feeding the packaging film, and needs a stacking machine or a dropping mechanism, so that there is a problem that the size of the entire apparatus becomes large.

An object of the present invention is to provide a packaging machine that can be downsized.

[0005]

[Means for Solving the Problems]

 The structure of the present invention for achieving the above-mentioned object is a seal cut portion having a cutter for cutting a packaging film wrapped around a package and sent out, and heaters arranged on both sides of the cutter, and this seal cut portion. A film feeding unit having chuck means for vertically chucking both ends of the packaging film sealed and cut by the above and a chuck driving means for moving the chuck means in the feeding direction of the packaging film. Characterize.

[0006]

[Action]

 When the end of the packaging film in which the package is placed is chucked by the chuck means of the film feeding unit and the chuck means is moved in the feeding direction of the packaging film by the chuck drive means, the package is delivered together with the packaging film. Be done. After that, the packaging film is cut with the cutter of the seal cut part, and both sides of the cut part with the heater, that is, the back end of the packaging film containing the package and the front end of the next packaging film are packaged. Heat sealed. After that, when the chuck of the film feeding section is opened by the chuck means, the wrapped package is naturally dropped from the space of the packaging frame.

[0007]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 2, the packaging frame body 10 is fixed to the frame body support plates 11 and 12 so as to be substantially horizontal. A film former 15 fixed to the packaging frame body 10 is arranged at the packaging body inlet 13 of the packaging frame body 10. A roll-shaped film support 16 is fixed to the frame support plate 12, and motor rollers 17, 18 rotated by a motor (not shown) are provided on the support 16 and the motor roller 17 is provided. , 18 support a packaging film 19 wound in a roll. The wrapping film 19 is sent out by the rotation of the motor roller 17, goes around the three idle rollers 20 to 22 and is sufficiently extended, and then advances along the inner wall of the film former 15, and is guided by this. The rectangular cross sections are overlapped with each other in the delivery direction, and both sides thereof are polymerized above the package supply unit 14. An air cylinder 24 supported by a bracket 23 is provided on the upper surface of the packaging frame 10, and the tip of the piston is pressed against the overlapping portion of the packaging film 19 from above through the window of the packaging frame 10. A heater (not shown) for heat sealing is fixed.

The above is substantially the same as the conventionally known structure. However, it is different from the conventional one in that the packaging frame body 10 is arranged substantially horizontally, does not have a support portion for supporting the package body after packaging, and has an open space 25 at the top and bottom.

At the rear of the air cylinder 24 that drives a heater (not shown), a seal cut portion 30 that is heat-sealed in a pipe shape by the heater and that seal-cuts the packaging film 19 containing the package is provided. ing. The structure of the seal cut portion 30 is almost the same as the conventional structure. That is, as shown in FIGS. 5 and 6, two bearings 32 and 33 arranged vertically are fixed to the upper plate 31 fixed to the upper surfaces of both side walls 10a and 10b of the packaging frame 10. Guide shafts 34 and 35 are slidably fitted into the bearings 32 and 33, respectively. A seal cut base 36 is fixed to the lower ends of the guide shafts 34 and 35,

The seal cut base 36 is provided with two film pressing claws 37 and 38 arranged in parallel with each other so as to be vertically movable. The film pressing claws 37 and 38 are attached downward by compression coil springs 39 and 40. It is energized. A cutter 41 and a pair of heaters 42 and 43 arranged in parallel to each other on both sides of the cutter 41 are fixed between the film pressing claws 37 and 38 of the seal cut base 36. . An air cylinder 44 is fixed to the upper plate 31 of the seal cut portion 30, and its piston is connected to the seal cut base 36.

Below the film pressing claws 37, 38 and the heaters 42, 43, receiving rubbers 45, 46 are arranged parallel to each other so as to face the film pressing claws 37, 38 and the heaters 42, 43. The receiving rubber support fitting 47, to which the receiving rubbers 45 and 46 are fixed, is fixed to the receiving base 48. Guide shafts 49 and 50 are fixed to the receiving base 48, and the guide shafts 49 and 50 are slidably inserted into guide bushes 52 and 53 fixed to the lower plate 51 of the seal cut portion 30. . An air cylinder 54 is fixed to the lower plate 51, and a piston of the air cylinder 54 is connected to the receiving base 48.

Next, the characteristic structure of this embodiment will be described. As shown in FIGS. 1 and 2, a drive shaft 60 is rotatably supported on both side walls 10a and 10b of the packaging frame body 10 on the rear side of the packaging frame body 10. A driven sprocket 61 is fixed inside the side wall 10b, and drive sprockets 62 and 63 are fixed outside the side walls 10a and 10b, respectively. An upper plate 64 is fixed to the rear upper surfaces of the side walls 10a and 10b, and a motor 65 is fixed to the upper plate 64. Then, a chain 67 is stretched over the drive sprocket 66 fixed to the output shaft of the motor 65 and the driven sprocket 61. Driven sprockets 68, 69 are rotatably supported on the outer sides of both side walls 10a, 10b of the packaging frame 10 on the side of the air cylinder 24 so as to correspond to the drive sprockets 62, 63. Chains 70 and 71 are stretched around 62 and 63 and driven sprockets 68 and 69.

As shown in FIGS. 3 and 4, a mounting plate 77 of film feeding portions 75 and 76 having the same structure is fixed to the lower portions of the chains 70 and 71. A supporting plate 78 is fixed to the mounting plate 77, and a fixing portion 79a of a claw holding plate 79 is fixed to the supporting plate 78. The claw holding plate 79 is formed with a holding portion 79b which is bent vertically inward of the fixing portion 79a and a bottom plate portion 79c which is bent horizontally from the lower end of the holding portion 79b. An upper plate 80 is fixed to the upper portion of the holding portion 79b of the claw holding plate 79 so as to face the bottom plate portion 79c.

The upper and lower ends of the two guide shafts 85 and 86 are fixed to the upper plate 80 and the bottom plate portion 79c, and the upper and lower claw fixing plates 87 and 88 are fixed to the guide shafts 85 and 86, respectively. It is slidably inserted. An upper claw 89 and a lower claw 90 are fixed to the upper claw fixing plate 87 and the lower claw fixing plate 88, respectively, and rubbers 91 and 92 are fixed to the facing surfaces of the upper claw 89 and the lower claw 90, respectively. ing. Further, the air cylinders 93 and 94 are fixed to the upper plate 80, and the piston of the air cylinder 93 is directly fixed to the upper claw fixing plate 87. A joint 95 is fixed to a piston of the air cylinder 94, and the joint 95 is connected to a joint 96 fixed to a lower pawl fixing plate 88 by a shaft 97.

Notched grooves 10c and 10d of constant width are formed along the chains 70 and 71 on both side walls 10a and 10b of the packaging frame 10, and guide plates are provided on the upper and lower surfaces of the notched grooves 10c and 10d, respectively. 100 and 101 are fixed symmetrically. Guide rollers 100 to 101 are arranged on the guide plates 100 and 101 so as to sandwich the vertical portions of the guide plates 100 and 101. The guide rollers 102 to 105 are roller support plates fixed to a support plate 78. Each is rotatably supported. Further, guide rollers 110 and 111 are arranged so as to come into contact with the lower surface of the guide plate 100 and the upper surface of the guide plate 101, and the guide rollers 110 and 111 are rotatably supported by roller support plates fixed to the support plate 78, respectively. ing.

Next, the operation will be described. The wrapping film 19 is overlapped with each other in the wrapping body supply section 14 as described above, and the overlapped both sides are heat-sealed by a heater driven by an air cylinder 24 from above to form a pipe shape. In addition, the end of the packaging film 19 is in a sealed state by the action of the heater 43 described later. Further, the film feeding portions 75 and 76 are in a state where the upper claw 89 and the lower claw 90 have been moved to the positions corresponding to the sealed ends of the packaging film 19. This state will be described.

First, the air cylinders 93 and 94 of the film feeding portions 75 and 76 operate. The air cylinder 93 operates so that its piston projects, and the air cylinder 94 operates so that its piston retracts. As a result, the upper claw fixing plate 87 and the lower claw fixing plate 88 move in the directions of the arrows A and B, respectively, and the rubber 91, 92 attached to the upper claw 89 and the lower claw 90 ends the end portion of the packaging film 19. Chuck.

A package to be packaged in this state is received. When the package is manually or automatically fed to the inside of the package supply unit 14, the package is fed to the inside of the packaging film 19 in the above state. When the package is fed to the package supply unit 14, a sensor (not shown) detects the package, the motor 65 operates, and the drive sprocket 66 rotates in the direction of arrow C by a certain amount. The rotation of the drive sprocket 66 is transmitted to the drive shaft 60 via the chain 67 and the driven sprocket 61, and the drive shaft 60 rotates in the arrow D direction. The rotation of the drive shaft 60 is transmitted to the drive sprockets 62 and 63, and the chains 70 and 71 move in the arrow E direction. As a result, the film feed portions 75 and 76 fixed to the chains 70 and 71 are also guided by the guide rollers 102 to 105, 110 and 111 in the arrow E direction by the guide plates 100 and 101, as shown by the two-dot chain line. Move to the rear side. As described above, the ends of the wrapping film 19 are chucked by the rubbers 91 and 92 fixed to the upper and lower claws 89 and 90, and the wrapping body is fed into the wrapping film 19. When the film feeding parts 75 and 76 move as described above, the packaging body is fed to the rear side together with the packaging film 19.

Next, the air cylinders 44, 54 of the seal cut portion 30 are operated, the packaging film 19 is pressed by the film pressing claws 37, 38 and the receiving rubbers 45, 46, and then the packaging film 19 is cut by the cutter 41. At the same time, both sides of the cut portion are heat-sealed by the heaters 42 and 43. That is, the rear end of the pipe-shaped packaging film 19 in which the package is placed and the front end of the packaging film 19 in which the package is next placed are heat-sealed. After that, the air cylinders 44 and 54 are operated so that the pistons thereof are retracted, and the pressing of the packaging film 19 in which the packaging body is packaged is released. At the same time, the pistons of the air cylinders 93 and 94 operate in the opposite direction to the above, and the upper claw 89 and the lower claw 90 open the chuck of the packaging film 19. As a result, the wrapped package is dropped below the space 25 of the packaging frame 10 and stored in a storage box (not shown) placed below the space 25. After that, the motor 65 rotates in the opposite direction to the above, and the film feeding portions 75 and 76 move to the heater side driven by the air cylinder 24. By repeating such a series of operations continuously, the packaging work of the package is automatically completed.

As described above, the ends of the packaging film 19 in which the package is put are chucked by the rubbers 91 and 92 fixed to the upper and lower claws 89 and 90 of the film feeding sections 75 and 76, respectively, When 75 and 76 are moved in the feeding direction of the packaging film 19, the packaging body is delivered together with the packaging film 19. Then, the wrapping film 19 is cut by the cutter 41 of the seal cut portion 30, and both sides of the cut portion are cut by the heaters 42 and 43, that is, the rear end portion of the wrapping film 19 containing the package and the next wrapping. The front end of the wrapping film 19 is heat-sealed. After that, when the chuck formed by the upper and lower claws 89 and 90 of the film feeding portions 75 and 76 is opened, the packaged package is naturally dropped from the space 25 of the packaging frame 10. As described above, since it is not necessary to separately provide the film feed roller means and the accumulator or the dropping mechanism is not necessary, the size of the apparatus can be reduced.

[0021]

[Effect of device]

 ADVANTAGE OF THE INVENTION According to this invention, the seal cut part which has the cutter which cuts the packaging film which wraps up a package and is sent out, and the heater arrange | positioned at both sides of this cutter, and the seal cut part was sealed and cut. The film feed roller means is provided with a chuck means for vertically chucking both ends of the packaging film and a film feed part having a chuck driving means for moving the chuck means in the feeding direction of the packaging film. Since it is not necessary to provide a device, and neither a stacking machine nor a dropping mechanism is required, the device can be downsized.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of a packaging machine according to the present invention.

FIG. 2 is a front view of FIG.

FIG. 3 is an enlarged plan view of a film feeding unit.

FIG. 4 is a side view of FIG.

FIG. 5 is a front view of a seal cut portion.

FIG. 6 is a side view of FIG.

[Explanation of Codes] 19 Packaging Film 30 Seal Cut Section 41 Cutter 42, 43 Heater 45, 46 Receiving Rubber 60 Drive Shaft 61 Driven Sprocket 62, 63 Drive Sprocket 65 Motor 67 Chain 68, 69 Driven Sprocket 70, 71 Chain 75, 76 Film Feeding Section 87 Upper Claw Fixing Plate 88 Lower Claw Fixing Plate 89 Upper Claw 90 Lower Claw 93, 94 Air Cylinder

Claims (1)

[Scope of utility model registration request] 1. A seal cut portion having a cutter for cutting a packaging film wrapped around a package and sent out, and heaters arranged on both sides of the cutter, and a package sealed and cut by the seal cut portion. A packaging machine comprising: a film feeding unit having a chuck means for vertically chucking both sides of the film from above and below, and a chuck driving means for moving the chuck means in the feeding direction of the packaging film.