Punching device for heat shrinkage film and packaging equipment

Abstract

The utility model relates to the technical field of packaging equipment, and discloses a perforating device for a heat shrinkage film and packaging equipment, the perforating device comprises a shell, and further comprises a film supply mechanism, a film puncturing mechanism and a film guiding mechanism, the film supply mechanism comprises a roll material arranged at the lower part in the shell, a first conveying rubber rod and a second conveying rubber rod, the first conveying rubber rod and the second conveying rubber rod are rotatably arranged in the shell, a thermal shrinkage film material from the coil stock abuts against the surface of the first conveying rubber rod, and the second conveying rubber rod tightly presses the thermal shrinkage film material on the surface of the first conveying rubber rod; the film pricking mechanism comprises a brush rod arranged in the shell and a plurality of pinwheel assemblies arranged opposite to the brush rod, soft bristles are arranged on the surface of the brush rod, pricking needles can fully stretch into the surface of the brush rod when pinwheels rotate, the possibility that punching on the surface of a heat shrinkage film material is not sufficient is reduced, and the punching efficiency of the surface of the heat shrinkage film material is improved. And the packaging quality of subsequent products is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging equipment, in particular to a punching device for heat shrink film and packaging equipment. Background Art

[0002] In the existing technology, the automatic packaging machines on the current market often encounter a series of problems during operation, especially when punching holes in the heat shrink film. The most prominent problem is that the heat shrink film cannot be punched through, so that the heat shrink film cannot be properly discharged during the subsequent heating process, resulting in loose packaging. These two situations not only affect the working efficiency and product quality of the packaging machine, but also increase production costs and maintenance difficulties. Utility Model Content

[0003] The main purpose of the utility model is to provide a punching device and packaging equipment for heat shrink film, aiming to solve the technical problem that the heat shrink film cannot be punched through.

[0004] To achieve the above-mentioned purpose, the utility model provides a punching device for heat shrink film, including a shell, and also including: a film supply mechanism, the film supply mechanism includes a coil, a first transmission rubber rod and a second transmission rubber rod arranged at the lower part of the shell, the first transmission rubber rod and the second transmission rubber rod are respectively rotatably arranged in the shell, the heat shrink film material from the coil abuts against the surface of the first transmission rubber rod, and the second transmission rubber rod presses the heat shrink film material against the surface of the first transmission rubber rod; a film piercing mechanism, the film piercing mechanism includes a coil arranged in the shell A brush rod inside the body and a plurality of needle wheel assemblies arranged relative to the brush rod, the surface of the brush rod is provided with soft bristles, the heat shrinkable film material passes through the film piercing mechanism after being output from the roll material, the needle wheel assembly presses the heat shrinkable film material against the surface of the brush rod, the needle wheel assembly is provided with a piercing needle for punching holes on the surface of the heat shrinkable film material, the piercing needle is in contact with the heat shrinkable film material; a film guiding mechanism, the film guiding mechanism is arranged on the outer surface of the shell, the heat shrinkable film material is conveyed from the film supply mechanism and then guided by the film guiding mechanism in the conveying direction of the heat shrinkable film material.

[0005] Preferably, the punching device for heat shrink film also includes a tensioning mechanism arranged in the shell, the tensioning mechanism includes a first mounting rod, a locking rod, a first guide rod, a second guide rod, a third guide rod and a fourth guide rod, the first mounting rod is arranged on the inner wall of the shell, the two locking rods are arranged in the same direction at both ends of the first mounting rod, the two ends of the first guide rod are respectively connected to one of the first mounting rods, the two ends of the second guide rod are respectively connected to one of the first mounting rods, the third guide rod is arranged above the first guide rod, and the fourth guide rod is arranged on the outer surface of the shell; after the first conveying rubber rod transports the heat shrinkable film material, it is tensioned on the surfaces of the first guide rod, the third guide rod, the second guide rod, and the fourth guide rod in turn and then enters the film guiding mechanism.

[0006] Preferably, the film guiding mechanism includes a first guide rod, a second guide rod and a fixed plate, both ends of the first guide rod are connected to the second guide rod through the fixed plate, the first guide rod and the second guide rod can be moved up and down and are arranged on the surface of the shell, and the heat shrinkable film material is tensioned from the surface of the fourth guide rod and then rests on the first guide rod and the second guide rod in turn and is then transported to the packaging operation station.

[0007] Preferably, the film guiding mechanism also includes connecting plates symmetrically arranged at both ends of the first guide rod, the connecting plates are installed on the outer surface of the shell, and guide holes extending in the vertical direction are provided on the connecting plates. Both ends of the first guide rod pass through the guide holes and are fixedly connected to the fixed plate. An adjusting rack is provided on a side of the connecting plate close to the first guide rod, and adjusting gears are respectively sleeved on both ends of the first guide rod. The adjusting gears are meshed with the adjusting rack for transmission. An adjusting knob is provided at one end or both ends of the first guide rod passing through the fixed plate. Twisting the adjusting knob rotates the adjusting gear, and the first guide rod and the second guide rod are driven to move up and down along the guide hole through the cooperation of the adjusting gear and the adjusting rack.

[0008] Preferably, the film piercing mechanism also includes a second mounting rod, the piercing needle assembly includes a needle wheel, a protective cover and a fixed block, the second mounting rod is arranged above the brush rod, a plurality of the piercing needle assemblies are equidistantly arranged on the second mounting rod, the fixed block is installed on the second mounting rod, the protective cover is rotatably arranged on the fixed block, the needle wheel is rotatably arranged in the protective cover, the needle wheel is exposed from the protective cover, and a plurality of the piercing needles are equidistantly arranged on the surface of the needle wheel; the heat shrinkable film material is tensioned on the surface of the brush rod, and the protective cover is rotated to the position where the needle wheel presses the heat shrinkable film material against the surface of the brush rod.

[0009] Preferably, the film supply mechanism also includes a conveying fine-adjustment component and a rotating handle, the conveying fine-adjustment component includes an adjustment rod, a connecting spring and a locking piece, the two conveying fine-adjustment components are respectively arranged at two ends of the first conveying glue rod, one end of the adjustment rod is rotatably connected to the inner wall of the shell, the other end of the adjustment rod rests on the notch of the rotating handle, the middle section of the adjustment rod is connected to the first conveying glue rod, the locking piece is located below the adjustment rod, one end of the connecting spring is connected to the adjustment rod, and the other end of the connecting spring is provided with a connecting pin inserted into the locking piece; rotating the rotating handle causes the adjustment rod to rotate, thereby driving the first conveying glue rod to adjust the distance between the first conveying glue rod and the second conveying glue rod for passing the heat shrink film material.

[0010] Preferably, the film supply mechanism also includes a fifth guide rod arranged on one side of the roll material, a film separating rod arranged above the fifth guide rod and a sixth guide rod arranged above the film separating rod. Two portions of the heat shrinkable film materials conveyed from the roll material contact with the surfaces of the fifth guide rod, the film separating rod and the sixth guide rod in sequence for tensioning. The two portions of the heat shrinkable film materials are separated between the fifth guide rod and the sixth guide rod, and the two portions of the heat shrinkable film materials contact the film separating rod respectively.

[0011] Preferably, the film supply mechanism further comprises adjustable positioning rods which are arranged on both sides of the coil.

[0012] The utility model also provides a packaging device, comprising the punching device for heat shrink film and a workbench, wherein the punching device for heat shrink film conveys the heat shrink film material to the workbench.

[0013] Preferably, the workbench includes an upper triangular plate, a conveyor belt and a lower triangular plate, the upper triangular plate is located above the conveyor belt, the lower triangular plate is located below the conveyor belt, one portion of the heat shrink film is conveyed to the upper triangular plate through a second guide rod, and one portion of the heat shrink film is conveyed to the lower triangular plate through a second guide rod.

[0014] In the technical solution provided by the utility model, the heat shrink film material is transported through the film guiding mechanism and its tension is increased, and then the heat shrink film material is made to contact the needle wheel in the film piercing mechanism and then holes are punched to release the internal air. After the piercing needle pierces the heat shrink film material, the heat shrink film material rests on the brush rod with soft and dense hair on the surface. When the needle wheel rotates, the piercing needle can fully extend into the surface of the brush rod, thereby reducing the possibility of insufficient punching on the surface of the heat shrink film material and improving the packaging quality of subsequent products. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a punching device for heat shrink film of the utility model;

[0017] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0018] Figure 3 It is a schematic diagram of the overall structure of an embodiment of a punching device for heat shrink film of the utility model;

[0019] Figure 4 The figure is a schematic diagram of the overall structure of an embodiment of the packaging equipment of the present utility model.

[0020] In the figure: 1, shell; 2, film supply mechanism; 21, coil; 22, first transmission glue rod; 23, second transmission glue rod; 24, conveying fine adjustment assembly; 241, adjustment rod; 242, connecting spring; 243, locking member; 244, connecting pin; 25, rotating handle; 26, fifth guide rod; 27, film separation rod; 28, sixth guide rod; 29, adjustable positioning rod; 3, film piercing mechanism; 31, brush rod; 32, needle wheel assembly; 321, needle wheel; 3211, piercing needle; 322, protective cover; 323, fixing block; 33, second safety device Mounting rod; 4. Film guiding mechanism; 41. First guide rod; 411. Adjusting gear; 412. Adjusting knob; 42. Second guide rod; 43. Fixing plate; 44. Connecting plate; 441. Guide hole; 45. Adjusting rack; 5. Tensioning mechanism; 51. First mounting rod; 52. Locking rod; 53. First guide rod; 54. Second guide rod; 55. Third guide rod; 56. Fourth guide rod; 6. Packaging equipment; 61. Workbench; 611. Conveyor belt; 612. Upper triangle plate; 613. Lower triangle plate; 62. Punching device for heat shrink film. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of the utility model, the utility model is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element, or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are only for illustrative purposes. In the description of the utility model, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; the meaning of "multiple" is two or more. The term "include" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may be present or added.

[0022] In addition, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. All technical and scientific terms used in this specification have the same meaning as those generally understood by technicians in the technical field of the present utility model. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0023] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0024] Please refer to Figure 1The utility model provides a punching device for heat shrink film, including a shell, and also includes: a film supply mechanism, the film supply mechanism includes a coil, a first conveying rubber rod and a second conveying rubber rod arranged at the lower part of the shell, the first conveying rubber rod and the second conveying rubber rod are respectively rotatably arranged in the shell, the heat shrink film material from the coil abuts against the surface of the first conveying rubber rod, and the second conveying rubber rod presses the heat shrink film material against the surface of the first conveying rubber rod; a film piercing mechanism, the film piercing mechanism includes a brush rod arranged in the shell and a plurality of pinwheel assemblies arranged relative to the brush rod, the surface of the brush rod is provided with soft bristles, the heat shrink film material passes through the film piercing mechanism after being output from the coil, the pinwheel assembly presses the heat shrink film material against the surface of the brush rod, the pinwheel assembly is provided with a piercing needle for punching holes on the surface of the heat shrink film material, and the piercing needle contacts the heat shrink film material; a film guiding mechanism, the film guiding mechanism is arranged on the outer surface of the shell, and the heat shrink film material is guided by the film guiding mechanism in the conveying direction of the heat shrink film material after being conveyed from the film supply mechanism.

[0025] In the technical solution provided by the utility model, the heat shrink film material is transported through the film guiding mechanism and its tension is increased, and then the heat shrink film material is made to contact the needle wheel in the film piercing mechanism and then holes are punched to release the internal air. After the piercing needle pierces the heat shrink film material, the heat shrink film material rests on the brush rod with soft and dense hair on the surface. When the needle wheel rotates, the piercing needle can fully extend into the surface of the brush rod, thereby reducing the possibility of insufficient punching on the surface of the heat shrink film material and improving the packaging quality of subsequent products.

[0026] Please refer to Figure 1 The utility model provides a punching device 62 for heat shrink film, including a shell 1, and also includes: a film supply mechanism 2, the film supply mechanism 2 includes a coil 21, a first transmission rubber rod 22 and a second transmission rubber rod 23 arranged at the lower part of the shell 1, the first transmission rubber rod 22 and the second transmission rubber rod 23 are respectively rotatably arranged in the shell 1, the heat shrink film material from the coil 21 is against the surface of the first transmission rubber rod 22, and the second transmission rubber rod 23 presses the heat shrink film material against the surface of the first transmission rubber rod 22; a film piercing mechanism 3, the film piercing mechanism 3 includes a A brush rod 31 and a plurality of needle wheel 321 assemblies 32 arranged relative to the brush rod 31, the surface of the brush rod 31 is provided with soft bristles, the heat shrinkable film material passes through the film pricking mechanism 3 after being output from the roll material 21, the needle wheel 321 assembly 32 presses the heat shrinkable film material against the surface of the brush rod 31, the needle wheel 321 assembly 32 is provided with a pricking needle 3211 for punching holes on the surface of the heat shrinkable film material, the pricking needle 3211 contacts the heat shrinkable film material; a film guiding mechanism 4, the film guiding mechanism 4 is arranged on the outer surface of the shell 1, the heat shrinkable film material is conveyed from the film supply mechanism 2 and the conveying direction of the heat shrinkable film material is guided by the film guiding mechanism 4.

[0027] In the technical solution provided by the utility model, the heat shrink film material is transported through the film guiding mechanism 4 and its tension is increased. After the heat shrink film material contacts the needle wheel 321 in the film piercing mechanism 3, holes are punched to release the internal air. After the piercing needle 3211 pierces the heat shrink film material, the heat shrink film material rests on the brush rod 31 with soft and dense hair on the surface. When the needle wheel 321 rotates, the piercing needle 3211 can fully extend into the surface of the brush rod 31, thereby reducing the possibility of insufficient punching on the surface of the heat shrink film material and improving the packaging quality of subsequent products.

[0028] Please refer to Figure 1 In this embodiment, the punching device 62 for heat shrink film further includes a tensioning mechanism 5 arranged in the housing 1, the tensioning mechanism 5 includes a first mounting rod 51, a locking rod 52, a first guide rod 53, a second guide rod 54, a third guide rod 55 and a fourth guide rod 56, the first mounting rod 51 is arranged on the inner side wall of the housing 1, two locking rods 52 are arranged at both ends of the first mounting rod 51 in the same direction, the two ends of the first guide rod 53 are respectively connected to one first mounting rod 51, the two ends of the second guide rod 54 are respectively connected to one first mounting rod 51, the third guide rod 55 is arranged above the first guide rod 53, and the fourth guide rod 56 is arranged on the outer surface of the housing 1; after the first transmission rubber rod 22 conveys the heat shrink film material, it is tensioned on the surfaces of the first guide rod 53, the third guide rod 55, the second guide rod 54, and the fourth guide rod 56 in sequence and then enters the film guiding mechanism 4. The tensioning mechanism 5 enables the heat shrink film to form an appropriate tension during the transmission process, ensuring that it is in the best tension state before entering the punching mechanism. The locking rod 52 is centered on the axis of the first mounting rod 51 and is installed at both ends of the first mounting rod 51 at a suitable angle, so that the first guide rod 53 and the second guide rod 54 can be rotated to a suitable angle position relative to the first conveying rubber rod 22 to adjust the surface tension during the conveying of the heat shrink film.

[0029] Please refer to Figure 3 In this embodiment, the film guide mechanism 4 includes a first guide rod 41, a second guide rod 42 and a fixing plate 43. Both ends of the first guide rod 41 are connected to the second guide rod 42 through the fixing plate 43. The first guide rod 41 and the second guide rod 42 can be moved up and down and are arranged on the surface of the housing 1. After the heat shrink film material is tensioned on the surface of the fourth guide rod 56, it is successively placed on the first guide rod 41 and the second guide rod 42 and then transported to the packaging operation station. The first guide rod 41 and the second guide rod 42 are used to adjust the direction of the heat shrink film output, and can adjust the tension of the entire heat shrink film during the transportation process.

[0030] Please refer to Figure 3In this embodiment, the film guide mechanism 4 further includes connecting plates 44 symmetrically arranged at both ends of the first guide rod 41, the connecting plates 44 are mounted on the outer surface of the housing 1, and the connecting plates 44 are provided with guide holes 441 extending in the vertical direction. Both ends of the first guide rod 41 pass through the guide holes 441 and are fixedly connected to the fixing plate 43. An adjusting rack 45 is provided on one side of the connecting plate 44 close to the first guide rod 41, and adjusting gears 411 are respectively sleeved at both ends of the first guide rod 41. The adjusting gear 411 is meshed with the adjusting rack 45 for transmission. An adjusting knob 412 is provided at one or both ends of the first guide rod 41 passing through the fixing plate 43. The adjusting knob 412 is twisted to rotate the adjusting gear 411, and the first guide rod 41 and the second guide rod 42 are driven to move up and down along the guide holes 441 through the cooperation of the adjusting gear 411 and the adjusting rack 45. Through the cooperation of the adjusting rack 45 and the adjusting gear 411, the position where the heat shrink film is to be output can be accurately located.

[0031] Please refer to Figure 1 In this embodiment, the film piercing mechanism 3 further includes a second mounting rod 33, and the piercing needle 3211 assembly includes a pin wheel 321, a protective cover 322 and a fixing block 323. The second mounting rod 33 is arranged above the brush rod 31, and a plurality of piercing needle 3211 assemblies are equidistantly arranged on the second mounting rod 33. The fixing block 323 is mounted on the second mounting rod 33, and the protective cover 322 is rotatably arranged on the fixing block 323. The pin wheel 321 is rotatably arranged in the protective cover 322, and the pin wheel 321 is exposed from the protective cover 322. A plurality of piercing needles 3211 are equidistantly arranged on the surface of the pin wheel 321; the heat shrinkable film material is tensioned on the surface of the brush rod 31, and the protective cover 322 is rotated to the position where the pin wheel 321 presses the heat shrinkable film material against the surface of the brush rod 31. The protective cover 322 can be rotated to adjust the pressure of the pin wheel 321 against the brush rod 31, and the protective cover 322 also plays a role in protecting the pin wheel 321.

[0032] Please refer to Figure 1In this embodiment, the film supply mechanism 2 also includes a conveying fine-tuning component 24 and a rotating handle 25. The conveying fine-tuning component 24 includes an adjusting rod 241, a connecting spring 242 and a locking piece 243. The two conveying fine-tuning components 24 are respectively arranged at the two ends of the first conveying glue rod 22. One end of the adjusting rod 241 is rotatably connected to the inner wall of the shell 1, and the other end of the adjusting rod 241 rests on the notch of the rotating handle 25. The middle section of the adjusting rod 241 is connected to the first conveying glue rod 22. The locking piece 243 is located below the adjusting rod 241. One end of the connecting spring 242 is connected to the adjusting rod 241, and the other end of the connecting spring 242 is provided with a connecting pin 244 inserted into the locking piece 243; rotating the rotating handle 25 causes the adjusting rod 241 to rotate, thereby driving the first conveying glue rod 22, and adjusting the distance between the first conveying glue rod 22 and the second conveying glue rod 23 for passing the heat shrink film material. The rotating handle 25 is used to adjust the tension of the heat shrink film between the first transmission rubber rod 22 and the second transmission rubber rod 23 to prevent the heat shrink film from slipping.

[0033] Please refer to Figure 4 In this embodiment, the film supply mechanism 2 further includes a fifth guide rod 26 disposed on one side of the coil 21, a film separation rod 27 disposed above the fifth guide rod 26, and a sixth guide rod 28 disposed above the film separation rod 27. Two portions of heat shrinkable film materials are conveyed from the coil 21 and contact the surfaces of the fifth guide rod 26, the film separation rod 27, and the sixth guide rod 28 in turn for tensioning. The two portions of heat shrinkable film materials are separated between the fifth guide rod 26 and the sixth guide rod 28, and the two portions of heat shrinkable film materials contact the film separation rod 27, respectively. In particular, between the fifth guide rod 26 and the sixth guide rod 28, the two portions of heat shrinkable film materials are separated and contact the film separation rod 27, respectively, thereby achieving separation and tensioning of the film materials. Separation can ensure that each portion of the film material maintains its integrity and functionality, and can be more easily applied to subsequent product packaging.

[0034] Please refer to Figure 1 In one embodiment, the film supply mechanism 2 further includes adjustable positioning rods 29 disposed on both sides of the coil 21. The installation position of the coil 21 can be changed by changing the position of the adjustable positioning rods 29.

[0035] Please refer to Figure 4The utility model also provides a packaging device 6, including the punching device 62 for heat shrink film and a workbench 61, wherein the punching device 62 for heat shrink film conveys the heat shrink film material to the workbench 61. The workbench 61 includes an upper triangular plate 612, a conveyor belt 611 and a lower triangular plate 613, wherein the upper triangular plate 612 is located above the conveyor belt 611, and the lower triangular plate 613 is located below the conveyor belt 611. A portion of the heat shrink film is conveyed to the upper triangular plate 612 through the second guide rod 42, and a portion of the heat shrink film is conveyed to the lower triangular plate 613 through the second guide rod 42. The product to be packaged is located at the conveyor belt 611, and the heat shrink film material is conveyed to the upper and lower sides of the product to be packaged through the upper triangular plate 612 and the lower triangular plate 613, and finally the heat shrink film material is cut and pressed onto the surface of the product to be packaged by a vertical die cutter located behind the conveyor belt 611.

[0036] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the aforementioned embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A perforating device for a heat shrink film, comprising a housing (1), characterized in that: Also includes: A film supply mechanism (2), the film supply mechanism (2) comprising a coil (21), a first transmission rubber rod (22) and a second transmission rubber rod (23) arranged at the lower part of the shell (1), the first transmission rubber rod (22) and the second transmission rubber rod (23) being rotatably arranged in the shell (1), the heat shrinkable film material from the coil (21) abuts against the surface of the first transmission rubber rod (22), and the second transmission rubber rod (23) presses the heat shrinkable film material against the surface of the first transmission rubber rod (22); A film piercing mechanism (3), the film piercing mechanism (3) comprising a brush rod (31) arranged inside the housing (1) and a plurality of needle wheel (321) assemblies (32) arranged relative to the brush rod (31), the surface of the brush rod (31) being provided with soft bristles, the heat shrinkable film material passes through the film piercing mechanism (3) after being output from the roll material (21), the needle wheel (321) assembly (32) presses the heat shrinkable film material against the surface of the brush rod (31), the needle wheel (321) assembly (32) being provided with a piercing needle (3211) for punching holes on the surface of the heat shrinkable film material, the piercing needle (3211) being in contact with the heat shrinkable film material; A film guiding mechanism (4) is arranged on the outer surface of the shell (1), and the heat shrinkable film material is conveyed from the film supply mechanism (2) and guided in the conveying direction of the heat shrinkable film material by the film guiding mechanism (4).

2. The punching device for heat shrink film according to claim 1, characterized in that: The perforating device for heat shrink film further comprises a tensioning mechanism (5) arranged in the shell (1), the tensioning mechanism (5) comprising a first mounting rod (51), a locking rod (52), a first guide rod (53), a second guide rod (54), a third guide rod (55) and a fourth guide rod (56), the first mounting rod (51) being arranged on the inner side wall of the shell (1), the two locking rods (52) being arranged in the same direction at the two ends of the first mounting rod (51), the two ends of the first guide rod (53) being respectively connected to one of the first mounting rods (51), the two ends of the second guide rod (54) being respectively connected to one of the first mounting rods (51), the third guide rod (55) being arranged above the first guide rod (53), and the fourth guide rod (56) being arranged on the outer surface of the shell (1); After the first conveying rubber rod (22) conveys the heat shrink film material, it is tensioned on the surfaces of the first guide rod (53), the third guide rod (55), the second guide rod (54), and the fourth guide rod (56) in sequence and then enters the film guiding mechanism (4).

3. The punching device for heat shrink film according to claim 2, characterized in that: The film guiding mechanism (4) comprises a first guide rod (41), a second guide rod (42) and a fixing plate (43); the first guide rod (41) is connected to the second guide rod (42) at both ends via the fixing plate (43); the first guide rod (41) and the second guide rod (42) are movably arranged on the surface of the shell (1) up and down; the heat shrink film material is tensioned on the surface of the fourth guide rod (56) and then rests on the first guide rod (41) and the second guide rod (42) in turn and is then transported to a packaging operation station.

4. The punching device for heat shrink film according to claim 3, characterized in that: The film guiding mechanism (4) further comprises connecting plates (44) symmetrically arranged at both ends of the first guide rod (41); the connecting plates (44) are mounted on the outer surface of the shell (1); the connecting plates (44) are provided with guide holes (441) extending in the vertical direction; both ends of the first guide rod (41) pass through the guide holes (441) and are fixedly connected to the fixing plate (43); an adjusting rack (45) is provided on a side of the connecting plate (44) close to the first guide rod (41); and the first guide rod (41) is provided with a plurality of guide holes (441) extending in the vertical direction. ) are respectively sleeved with adjusting gears (411) at both ends, the adjusting gears (411) are meshed with the adjusting rack (45) for transmission, the first guide rod (41) passes through one end or both ends of the fixing plate (43) and is provided with an adjusting knob (412), the adjusting knob (412) is twisted to rotate the adjusting gear (411), and the first guide rod (41) and the second guide rod (42) are driven to move up and down along the guide hole (441) through the cooperation of the adjusting gear (411) and the adjusting rack (45).

5. The punching device for heat shrink film according to claim 1, characterized in that: The film-piercing mechanism (3) further comprises a second mounting rod (33), the piercing needle (3211) assembly comprises a needle wheel (321), a protective cover (322) and a fixing block (323), the second mounting rod (33) is arranged above the brush rod (31), a plurality of the piercing needle (3211) assemblies are equidistantly arranged on the second mounting rod (33), the fixing block (323) is mounted on the second mounting rod (33), and the protective cover (322) is rotatably arranged On the fixed block (323), the needle wheel (321) is rotatably arranged in the protective cover (322), the needle wheel (321) is exposed from the protective cover (322), and a plurality of needles (3211) are equidistantly arranged on the surface of the needle wheel (321); the heat shrinkable film material is tensioned on the surface of the brush rod (31), and the protective cover (322) is rotated to the position where the needle wheel (321) presses the heat shrinkable film material against the surface of the brush rod (31).

6. The punching device for heat shrink film according to claim 4 or 5, characterized in that: The film supply mechanism (2) also includes a conveying fine-adjustment component (24) and a rotating handle (25). The conveying fine-adjustment component (24) includes an adjustment rod (241), a connecting spring (242) and a locking piece (243). The two conveying fine-adjustment components (24) are respectively arranged at the two ends of the first conveying rubber rod (22). One end of the adjustment rod (241) is rotatably connected to the inner wall of the shell (1), and the other end of the adjustment rod (241) rests on the notch of the rotating handle (25). The middle section of the adjustment rod (241) is connected to the first conveying rubber rod (22). The locking piece (243) is located below the adjustment rod (241). One end of the connecting spring (242) is connected to the adjustment rod (241), and the other end of the connecting spring (242) is provided with a connecting pin (244) plugged into the locking piece (243). The rotating handle (25) is rotated to rotate the adjusting rod (241) so as to drive the first conveying rubber rod (22) to adjust the distance between the first conveying rubber rod (22) and the second conveying rubber rod (23) for the heat shrink film material to pass through.

7. The perforating device for heat shrinkable film according to claim 6, characterized in that: The film supply mechanism (2) also includes a fifth guide rod (26) arranged on one side of the coil (21), a film separation rod (27) arranged above the fifth guide rod (26), and a sixth guide rod (28) arranged above the film separation rod (27). Two portions of the heat shrinkable film materials bonded to each other are conveyed from the coil (21) and contact the surfaces of the fifth guide rod (26), the film separation rod (27), and the sixth guide rod (28) in sequence for tensioning. The two portions of the heat shrinkable film materials are separated between the fifth guide rod (26) and the sixth guide rod (28), and the two portions of the heat shrinkable film materials contact the film separation rod (27) respectively.

8. The perforating device for heat shrink film according to claim 7, characterized in that: The film supply mechanism (2) further comprises adjustable positioning rods (29) which are arranged on both sides of the coil (21) in a close fit.

9. A packaging device (6), characterized in that: It comprises a punching device for heat shrinkable film and a workbench (61) as described in any one of claims 1 to 8, wherein the punching device for heat shrinkable film conveys the heat shrinkable film material to the workbench (61).

10. The packaging device (6) according to claim 9, characterized in that The workbench (61) comprises an upper triangular plate (612), a conveyor belt (611) and a lower triangular plate (613), wherein the upper triangular plate (612) is located above the conveyor belt (611), and the lower triangular plate (613) is located below the conveyor belt (611); a portion of the heat shrinkable film is conveyed to the upper triangular plate (612) via a second guide rod (42), and a portion of the heat shrinkable film is conveyed to the lower triangular plate (613) via a second guide rod (42).

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