TWI719397B - Three side seal (back seal) packaging machine - Google Patents

Abstract

A three-side seal (back seal) packaging machine, which includes: a machine; a film set The placing mechanism is installed on the machine and can place the film; a guiding unit, the guiding unit has an inlet section and an outlet section, and a guiding layer is provided on the outside of the guiding unit; a traction device, Located below the exit section of the guide unit; a hot pressing device located below the traction device, located below the traction device; a cutting device located below the hot pressing device, the film placement mechanism can be installed with a film roll The adhesive film can be brought to the traction device through the guiding layer to form a ring, and the side heat-sealed and fixed by the heat pressing device, and then the two ends of the adhesive film are heat-sealed and cut by the sealing and cutting device to form a three-sided heat The packager of the seal.

Description

Three side seal (back seal) packaging machine

The present invention is related to a packaging machine, in particular to a three-sided sealing (back-sealing) packaging machine that can heat-seal the three sides of a sheet of glue film to form a package.

Existing disposable tableware or some disposable items, in order to avoid contact with the external environment before use, usually a packaging machine is used to pack the items when leaving the factory. Please refer to the first picture as shown in the first picture. A schematic diagram of a conventional packaging machine 10 includes two film rolls 11 and a roller set 12. The two film rolls 11 are respectively equipped with an adhesive film 111, and the film 111 can pass through the roller set 12. The roller set 12 is composed of two rollers 121. The surface of the two rollers 121 is provided with a groove 122. A to-be-packaged object 13 will enter between the two rubber films 111 and enter between the roller sets 12, waiting After the package 13 falls into the groove 122, the surface of the two rollers 121 will heat-seal and cut the adhesive film 111 around the groove 122, so that the two adhesive films 111 and the package 13 are formed as In the packaged product 15 shown in the second figure, hot pressing portions 151 are formed on the four periphery of the product 15 so that the package 13 can be packaged in the product 15.

However, the conventional packaging machine requires the use of two rolls of film 111 to perform the packaging action. Because the lengths of the two films 111 are inconsistent during use, one roll has been applied and needs to be replaced, and the other roll is left. ; If it is replaced at the same time, the unused film will be wasted. If only one roll is replaced, the other roll of film 111 needs to be replaced after being used for a while, which will increase the trouble of replacement and downtime. Furthermore, the packaged product 15 is packaged by hot pressing on four sides to form a flat package appearance. The shape of the package 13 that can be contained in the package 13 is restricted, and objects that are too three-dimensional cannot be installed.

The main purpose of the present invention is to provide a three-side seal (back seal) packaging machine that can complete packaging through the use of a single adhesive film.

The second objective of the present invention is to provide a three-sided seal (back seal) packaging machine that forms a single plastic film into a cylindrical shape and can package relatively three-dimensional objects.

In order to achieve the above objective, the present invention provides a three-sided seal (back seal) packaging machine, which includes: a machine; a film placement mechanism, which is installed on the machine and can place the film; a guide unit , The guiding unit has an inlet section and an outlet section, and a guiding layer is provided on the outside of the guiding unit; a traction device is installed on the machine and located at the outlet section of the guiding unit, the traction device includes There are two traction wheels, the two traction wheels are arranged side by side, and the contact position of the two traction wheels is at the exit section of the guide unit; a hot pressing device is installed on the machine and located at the side of the traction device Below, the hot pressing device includes two hot pressing wheels, the two hot pressing wheels are arranged side by side, and the contact position of the two hot pressing wheels is located below the traction device; a cutting device is installed on the machine The table is located below the hot pressing device, and the sealing and cutting device includes two sealing and cutting wheels, and at least one sealing and cutting part is provided on the two sealing and cutting wheels.

Preferably, the guiding unit is formed with crimping blocks on both sides of the guiding layer, and a gap remains between the two crimping blocks and the guiding layer.

Preferably, the diameter of the inlet section of the guide unit is greater than the diameter of the outlet section, so that the guiding layer forms a conical surface, the top end of the inlet section forms an arc-shaped opening, and the end of the outlet section is a circle Open up.

In the three-sided seal (back seal) packaging machine provided by the present invention, the film placement mechanism only needs to insert a single film to be packaged, and the film pulled out by the guide unit is curled from a sheet into a cylindrical shape, and Guide to the traction device, the traction device can drive the film transport, and then through the hot pressing device to heat and fix the joints on both sides of the film, and then through the sealing and cutting part of the sealing and cutting device for the upper and lower ends of the film Hot press cutting.

Please refer to FIG. 3, which is a packaging machine 20 of a preferred embodiment of the present invention, which includes a machine 30, a film placement mechanism 40, a guide unit 50, a feeding device 60, a traction device 70, A hot pressing device 80 and a cutting device 90, of which: please refer to FIG. 3, the film placement mechanism 40 is installed on the machine 30 and has a rotating rod 41 that can be sleeved There is a film 42 which can rotate on the rotating rod 41 and release the film 421 on the film 42. The film placement mechanism 40 is also provided with a conveying roller set 43 on the machine table 30. The conveying roller set 43 enables the film 421 to maintain a fixed line and tension.

Please refer to Figures 3, 5 and 6, the guide unit 50 is formed with an arc-shaped inlet section 51 at the top, an arc-shaped opening is formed at the top of the inlet section 51, and the bottom of the guide unit forms a general A circular outlet section 52 is formed with a circular outlet at the bottom. The diameter of the inlet section 51 is larger than that of the outlet section 52, so that a funnel-shaped cone-shaped guiding layer 53 is formed on the surface of the guiding unit 50. The guiding layer 53 is folded into a blanking block 531 on both sides of the inlet section 51, and there is a gap between the two blanking blocks 531 and the guiding layer 53; the top and bottom ends of the two blanking blocks 531 are parallel to each other. A limit arc 532 is provided on each straddle, respectively.

Please refer to Figures 3 to 5, the feeding device 60, in this embodiment, includes a base 61, a feeding channel 62 and a turntable 63; the base 61 is provided with an opening 611, the bottom of the opening 611 is connected with The feeding channel 62, the feeding channel 62 has a slope to allow articles to slide down, the feeding channel 62 communicates with the inlet section 51 of the guide unit 50, the base 61 is provided with the turntable 63, which can be mounted on the base 61 Rotating upwards, the turntable 63 is provided with a plurality of through grooves 631 therethrough. One of the through grooves 631 can coincide with the opening 611 on the base 61. The turntable 63 is provided with a coaxial ring at a position close to the axis. Two supporting vertical rings 632, the supporting vertical ring 632 is ring-mounted above the through grooves 631; the feeding device 60 can also adopt a linear single continuous conveying method, using manual placement methods and other common feeding methods for feeding , Does not limit the way of feeding.

Please refer to Figures 3 and 6 to 8, the traction device 70 is arranged on the machine 30 next to the exit section 52 of the guide unit 50. It is composed of two traction wheels 71 side by side. The contact position of the two traction wheels 71 is at the center of the exit section 52 of the guide unit 50. The two traction wheels 71 rotate in opposite directions; an elastic force is applied between the two traction wheels 71 to make the The two traction wheels 71 can be in close contact to maintain a good traction effect.

Please refer to Figure 3, Figures 6 to 8, the hot pressing device 80 is located on the machine 30 directly below the traction device 70, which has two hot pressing wheels 81, the two hot pressing wheels 81 series Side by side, the axial direction of the two heat pressing wheels 81 is parallel to the axial direction of the two traction wheels 71, and the contact position of the two heat pressing wheels 81 is the contact position of the two traction wheels 71 On the same reference line, the surfaces of the two hot pressing wheels 81 have lines and can generate a heat energy, so that the articles passing between the two hot pressing wheels 81 can be heated to produce a heat sealing effect.

Please refer to Figures 3, 9 and 10, the sealing and cutting device 90 is installed on the machine 30, the sealing and cutting device 90 is located below the guide unit 50, the sealing and cutting device 90 is composed of two sealing and cutting wheels 91 The two sealing and cutting wheels 91 are arranged side by side in front and rear, the axial direction of the two sealing and cutting wheels 91 will be perpendicular to the axial direction of the two hot pressing wheels 81, and the two hot pressing wheels 81 of the heat pressing device 80 The contact position is roughly coincident with the center of the two sealing and cutting wheels 91; the two sealing and cutting wheels 91 rotate in opposite directions, and the two sealing and cutting wheels 91 are provided with a cutting portion 92, and the sealing and cutting portion 92 includes two heat seals. The block 921, the cutting knife 922 and the cutting groove 923, the two heat-sealing blocks 921 are respectively arranged at the relative positions of the two sealing and cutting wheels 91, so that every time the two sealing and cutting wheels 91 rotate one revolution, the two heat-sealing blocks 921 will touch Once, the cutting knife 922 and the cutting groove 923 are respectively arranged in the center of the heat-sealing block 921 of one of the cutting wheels 91. When the heat-sealing block 921 corresponds to the heat-sealing block 921, the cutting knife 922 can fall into the cutting groove 923. Inside, at the same time, the cutting knife 922 and the cutting groove 923 separate the two heat-sealing blocks 921 into an upper heat-sealing block 9211 and a lower heat-sealing block 9212.

Please refer to Figures 3 and 5, when the packaging is started, the feeding device 60 will take out the annularly arranged objects to be packaged from an injection machine (not shown). In this embodiment, it is a fork S. The forks S will be inserted into the through slots 631 above the turntable 63, and the ends of the forks S will stand on the support ring 632, so that the forks S will form an inclined arrangement. In this way, it can be ensured that when the fork S is dropped, its head is facing down and it falls smoothly. When a slot 631 of the turntable 63 coincides with the opening 611 of the base 61, the fork S in the slot 631 will fall into the feeding channel 62 from the position of the opening 611, and be sent to the guide through the feeding channel 62 The position of the inlet section 51 of the lead unit 50; the turntable 63 rotates at a fixed speed so that the fork S can sequentially fall into the opening of the inlet section 51 and fall out from the opening of the outlet section 52, the In addition to the aspect of the present embodiment, the feeding device 60 may also use conventional feeding methods such as manual feeding or other conveyor belts to perform feeding operations.

Please refer to Figures 6 to 8, when the film 42 on the rotating rod 41 of the film placement mechanism 40 is to be packaged, the film 421 on the film 42 is passed through the conveying roller set 43 to make the film 421 can penetrate into the guiding layer 53 from the position of the inlet section 51 of the guiding unit 50. The adhesive film 421 is restricted by the edge pressing block 531 and the limiting arc 532, and can be slidably arranged on the guiding layer. The surface of the guide layer 53, and the adhesive film 421 was originally in the form of a sheet at the position of the inlet section 51 of the guide layer 53, but at the position of the outlet section 52, it will be condensed to form a cylindrical shape. A protruding piece 4211 will be formed on both sides; 6 to 8, the protruding piece 4211 of the film 421 will be clamped and driven by the traction wheel 71 of the traction device 70 outside the guide unit 50, so that the film 421 can be continuously rolled, and then , The protruding piece 4211 will be hot pressed by the hot pressing wheel 81 of the hot pressing device 80, so that the position of the protruding piece 4211 will form the first hot pressing part 422; then, the adhesive film with the first hot pressing part 422 421 forms a cylindrical structure. When the adhesive film 421 moves down again, the fork S will fall into the inner space of the adhesive film 421 through the opening of the outlet section 52 of the guide unit 50; Please refer to Figures 9 and 10, when the two sealing and cutting wheels 91 of the sealing and cutting device 90 rotate one revolution, they are exactly the length of a package. When the sealing and cutting portions 92 on the two sealing and cutting wheels 91 are opposite, the heat sealing block 921 Upper heat sealing block 9211 and lower heat The sealing block 9212 can form a second hot pressing part 423 and a third hot pressing part 424 on the adhesive film 421 at the same time. The second hot pressing part 423 and the third hot pressing part 424 are formed by the cutter 922 And the cutting groove 923 to form a barrier and cutting, so that the adhesive film 421 forms a heat seal at the bottom and top of the fork S, and because the two hot pressing wheels 81 of the hot pressing device 80 are connected to the sealing and cutting device 90 The center of the sealing and cutting wheel 91 overlaps, so that the first hot pressing portion 422 will be formed on the back of the overall package, forming a central back seal effect; please refer to Figure 11, which is a finished product P of a package, and the adhesive film 421 can be The one-piece structure forms a cylindrical three-sided seal (back seal) of the heat-sealed packaging product P. In this embodiment, the sealing and cutting device 90 is vertically arranged with the hot pressing device 80, so that the first hot pressing part 422 and the heat pressing part of the second heat pressing part 423 or the third heat pressing part 424 form a vertical stagger, the upper and lower ends of the first heat pressing part 422 will be at the second heat pressing part 423 and the third heat pressing part 424 A heat-pressing overlap area 4221 is formed on the upper part. The heat-pressing overlap area 4221 of the first heat-pressing part 422 is heated by the second heat-pressing part 423 and the third heat-pressing part 424, so that the first heat-pressing part 422 is pasted on the adhesive film 421, and is located in the center of the back of the packaged product P. In addition, the setting of the sealing and cutting device 90 can be adjusted according to the requirements of the packaging and sealing.

Please refer to FIG. 11, which shows the package product P completed in this embodiment. The first hot pressing part 422 is located on the back of the package product P and becomes a package with a back side seal (back seal). Viewed from the front of the packaged product P, the packaged object (fork S) can cover the first hot-pressed portion 422, and the second hot-pressed portion 423 and the third hot-pressed portion 424 are located above and below the packaged product P Both ends; the overall packaging effect is beautiful and concise, and the adhesive film 421 can be printed on the front of the packaging product P with patterns and product descriptions, etc., and will not be affected by the hot pressing part.

In addition, as shown in Figures 3 and 9, the finished product P, which has been heat-sealed on three sides, is cut, and will be conveyed by the conveyor belt T to the outside of the machine 30 for collection. The finished product P can also be directly under the sealing and cutting device 90 of the machine 30 Set up a collection basket to collect directly.

Compared with the conventional packaging machine, the three-side seal (back-seal) packaging machine provided by the present invention has the advantage that only a single film can be used for packaging, the time for film replacement can be reduced, and unnecessary downtime can be avoided. The replacement action can improve efficiency. Furthermore, the circular design formed by the guiding device can increase the scope of application of the object to be packaged. As long as it can be packaged under the exit section of the guiding unit.

Film packing machine 10 111 11 121 Film 12 roller set 13 roller grooves 122 finished wrapper 15 30 20 Packing machine 41 machine rotation actuator rod 40 is placed a film 42 of the first film 421 film pressing portion 422 projecting pieces 4211 The third pressing part 424 of the second pressing portion 423 of the overlap region 4221 pressing roller group 43 transporting guide 50 an outlet section 52 section 53 section 51 inlet guide layer 531 bead 532 blocks 60 limiting the arc sheet feeding apparatus 611 of the base 61 Opening 62 Feeding channel Traction device 63 Supporting turntable 631 Vertical groove 70 632 loop 71 idler wheel 80 pressing means 81 hot cutting means 90 the cutting wheel 91 cutting portion 92 at a block 921 heat-sealed heat-seal block 922 9212 923 slots cutter fork T P S conveyor finished heat sealed block 9211

In order to enable your reviewer to further understand the purpose, features, and effects of the present invention, a preferred embodiment of the present invention is given below, and is illustrated in detail below: Figure 1 is a schematic diagram of a conventional packaging machine.

Figure 2 is a schematic diagram of the finished product made by the packaging machine of Figure 1.

Fig. 3 is a perspective view of a three-side seal (back seal) packaging machine according to a preferred embodiment of the present invention.

Fig. 4 is a perspective exploded view of the feeding device of Fig. 3.

Fig. 5 is a schematic cross-sectional view of the guiding unit of Fig. 3 for guiding the film and discharging of the feeding device.

Fig. 6 is a schematic diagram of the action of the traction device and the hot pressing device of Fig. 3.

Figure 7 is a side view of the traction device and the hot pressing device.

Fig. 8 is a schematic diagram of another action of the traction device and the hot pressing device.

Fig. 9 is a partial perspective view of the sealing and cutting device of Fig. 3.

Figure 10 is a schematic diagram of the action of the sealing and cutting device.

Figure 11 is a schematic diagram of the back side of the finished product made by the three-sided seal (back seal) packaging machine of the present invention.

20: Packing machine

40: Film placement mechanism

41: Rotating lever

43: Conveyor roller set

50: Guidance unit

51: Import section

52: Exit section

53 guide layer 531 bead block 532 limiting arc sheet 60 feeding device 61 of the base 63 turntable 631 through the groove 632 supporting vertical ring 70 pulling means 71 traction wheel 80 pressing means 81 pressing wheel 90 cutting means 91 the cutting wheel 92 cutting portion T Conveyor belt

Claims (8)

A three-side seal (back seal) packaging machine, which includes: a machine; a film placement mechanism, which is installed on the machine and can place the film; a guide unit, the guide unit has an inlet section And an exit section, the guide unit is provided with a guide layer outside; a traction device is installed on the machine and located at the exit section of the guide unit, the traction device includes two traction wheels, the two traction wheels The two traction wheels are arranged side by side. The contact position of the two traction wheels is near the center of the exit section of the guide unit; a hot pressing device is installed on the machine and located below the traction device, the hot pressing device Contains two hot pressing wheels, the two hot pressing wheels are arranged side by side, the contact position of the two hot pressing wheels is located below the traction device; a cutting device is installed on the machine, located in the hot pressing Below the device, the sealing and cutting device includes two sealing and cutting wheels, the two sealing and cutting wheels are provided with at least one cutting part; a feeding device, the feeding device includes a base and a feeding channel; the base is provided with an opening, the opening The bottom is connected with the feeding channel, the feeding channel is connected with the inlet section of the guide unit, the base is provided with a turntable, the turntable can rotate on the base, and the turntable is provided with a plurality of through grooves in the ring , The slot can coincide with the opening on the base, the turn At least one support ring is arranged on the disk and coaxially at a position close to the axis, and the support ring is arranged above the through grooves. The three-sided seal (back-seal) packaging machine according to claim 1, wherein the guiding unit is folded back at both sides of the exit section of the guiding layer to form a crimping block, and the two crimping blocks and the guiding There is a gap between the layers. The three-sided sealing (back-sealing) packaging machine according to claim 2, which further includes at least one limiting arc piece, and both ends of the limiting arc piece are arranged on the two edge-pressing blocks. The three-side-seal (back-seal) packaging machine described in claim 1, wherein the diameter of the inlet section of the guide unit is larger than the diameter of the outlet section, so that the guiding layer forms a conical surface, and the top of the inlet section has a An arc-shaped opening, and a circular opening is formed at the bottom end of the outlet section. The three-sided sealing (back-sealing) packaging machine according to claim 1, wherein the two sealing and cutting wheels of the sealing and cutting device are arranged side by side, so that the axial direction of the two sealing and cutting wheels is aligned with the axis of the hot pressing wheel of the hot pressing device To form a vertical. The three-sided sealing (back sealing) packaging machine according to claim 5, wherein the connecting position of the two heat pressing wheels of the heat pressing device is approximately coincident with the center of the sealing and cutting wheel of the sealing and cutting device. The three-sided sealing (back sealing) packaging machine according to claim 1 or 5, wherein the sealing and cutting parts include two heat-sealing blocks and a cutting knife and a cutting groove, and the two heat-sealing blocks are respectively arranged on the two sealing and cutting parts. On the wheel, the cutter is arranged in the center of the heat-sealing block of one of the cutting wheels, and the cutting groove is provided in the center of the heat-sealing block of the other sealing and cutting wheel. The three-sided sealing (back-sealing) packaging machine according to claim 1, wherein the film placement mechanism is provided with a film, the film is covered with a film on the guiding layer of the guiding unit, the film And as the shape of the guiding layer is converted from a sheet shape to a tube shape, the two ends of the film will be clamped and driven by the traction device, and then the hot pressing device and the sealing and cutting device will heat seal and cut the film.

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