Heat shrink packaging machine

Abstract

The utility model belongs to the technical field of packaging machines, and particularly relates to a heat shrinkage packaging machine. Comprising a shrinking unit and a sealing and cutting unit, the sealing and cutting unit is provided with a bagging assembly and a cutting device, the sealing and cutting unit comprises a table top, the table top is provided with a conveying device, the conveying device comprises a first conveying belt and a second conveying belt, the conveying direction faces the shrinking unit, and the cutting device is arranged between the first conveying belt and the second conveying belt. The cutting device comprises a mounting frame, a bearing assembly and a cutting assembly are arranged on the mounting frame in a sliding mode, the cutting assembly and the bearing assembly are both connected with a driving structure, the driving structure is arranged in the box body, and the driving structure can drive the cutting assembly and the bearing assembly to move oppositely to cut the plastic film on the table top; and the effect of firm sealing is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of packaging machines, in particular to a heat shrink packaging machine. Background Art

[0002] The working principle of the heat shrink packaging machine is to use the heat shrinkability of the heat shrink film to wrap the items and then shrink the film through the heating equipment, so that it fits tightly on the product to achieve the purpose of packaging. There are many kinds of film materials used in heat shrink packaging machines, including PE film, PVC, POF film, etc. Different materials are suitable for different types of product packaging needs. The Chinese patent with publication number CN219076696U discloses a sealing and cutting machine. When cutting the plastic film, the heat sealing knife directly presses the plastic film against the table or conveyor belt for cutting, which makes it difficult to ensure uniform contact between the heat sealing knife and the plastic film, and there is a risk of unreliable sealing. Utility Model Content

[0003] The purpose of the utility model is to provide a heat shrink packaging machine to achieve a reliable sealing effect in view of the above-mentioned technical problems.

[0004] In view of this, the utility model provides a heat shrink packaging machine, comprising a shrinking unit and a sealing and cutting unit, the sealing and cutting unit being provided with a bagging assembly and a cutting device, the sealing and cutting unit comprising a table top, the table top being provided with a conveying device, the conveying device comprising a first conveyor belt and a second conveyor belt, both conveying directions being toward the shrinking unit, a cutting device being provided between the first conveyor belt and the second conveyor belt, the cutting device comprising a mounting frame, a receiving assembly and a cutting assembly being slidably provided on the mounting frame, the cutting assembly and the receiving assembly being both connected to a driving structure, the driving structure being provided in a box body, the driving structure being capable of driving the cutting assembly and the receiving assembly to move toward each other to cut the plastic film on the table top.

[0005] In the present technical solution, a cutting device is arranged between the first conveyor belt and the second conveyor belt on the table, and the cutting device includes a cutting component and a receiving component arranged corresponding to the cutting component. The cutting component and the receiving component are both slidably arranged on the driving structure. When the plastic film wrapped with the product moves to the second conveyor belt, the conveying device stops conveying, and the driving structure drives the receiving component to move upward and drives the cutting component to move downward. The two cooperate to cut the plastic film. When the cutting component cuts the plastic film, it abuts against the receiving component to ensure that the cutting and sealing are firm. At the same time, the cutting component and the receiving component move toward each other, shortening the travel distance of the cutting component and improving the cutting efficiency.

[0006] In the above technical solution, further, the mounting frame includes a first fixed transverse plate arranged in the box body, and support columns perpendicular to the first fixed plate are symmetrically arranged on both sides of the first fixed transverse plate.

[0007] In the above technical solution, further, the cutting assembly includes a horizontally arranged pressing plate, a first sliding block is symmetrically arranged on one side of the pressing plate, the first sliding block is slidably connected to the support column, a first connecting block is connected to the end of the pressing plate, the first connecting block is connected to the driving structure, and a cutting portion is connected to the bottom of the pressing plate.

[0008] In the above technical solution, further, the cutting part includes a cutter, the top of the cutter is fixedly connected to the pressure plate, the cutter is movably arranged in the protection plate, and the protection plate and the pressure plate are elastically connected.

[0009] In the above technical solution, further, the protection plate is symmetrically arranged on both sides of the cutter, the protection plate is connected to a fixed block, the fixed block is connected to a fixed rod, the fixed rod passes through one end of the pressure plate to provide a limiting block, the bottom of the limiting block is connected to a first spring, and the other end of the first spring is connected to the top of the pressure plate.

[0010] In the present technical solution, the fixing rod, the limiting block and the first spring form a group, and there are several groups arranged equidistantly along the length direction of the protection plate to ensure the cutting stability of the cutting assembly.

[0011] In the above technical scheme, further, the receiving assembly includes a support plate, a second slider is symmetrically arranged on one side of the support plate, the second slider is slidably connected to the support column, a second connecting block is arranged at the end of the support plate, the second connecting block is connected to the driving structure, a plurality of fixed columns are arranged on the top of the support plate, the fixed columns are slidably connected to the receiving plate, a second spring is provided on the fixed column sleeve, one end of the second spring is connected to the top wall of the support plate, and the other end is connected to the bottom wall of the receiving plate, and a receiving bar is provided at one end of the receiving plate away from the fixed column.

[0012] In this technical solution, the fixed column and the second spring form a group, and there are several groups arranged along the length direction of the receiving plate to ensure the stability of the receiving component and the cutting component when they are in contact. The cutter is a heat-sealing knife, and the protective plate and the pressure plate are elastically connected. When cutting, the cutting component and the receiving component move toward each other, and the protective plates on both sides of the cutter press the plastic film against the receiving strip. The pressure plate continues to move downward, and the first spring connected to the protective plate is compressed and deformed. The protective plate moves upward, and the cutter cuts and heat-seals the plastic film. The second spring in the receiving plate can provide shock absorption when the protective plate presses the plastic film against the receiving strip. During the heat-sealing process, the protective plate can fully press the plastic film against the receiving strip to avoid an unreliable seal.

[0013] In the above technical scheme, further, the driving structure includes a first cylinder, the first cylinder is fixedly arranged on the second fixed horizontal plate above the first fixed horizontal plate, the output end of the first cylinder is connected to the first rack, the first rack is transmission-connected to the transmission rod, the transmission rod is rotatably arranged on the transmission seats on both sides, the transmission seat is fixedly connected to the side walls of the box body, the transmission seat is slidably connected to the vertical second rack and the third rack, the second rack and the third rack are both transmission-connected to the transmission rod, the top of the second rack is connected to the first push rod, the first push rod is connected to the first connecting block set at the end of the pressure plate, the top of the second rack is connected to the second push rod, the second push rod is connected to the second connecting block set at the end of the support plate.

[0014] In the present technical solution, the transmission connection between the first rack and the transmission rod is a gear coaxially fixedly connected to the middle part of the transmission rod, the first gear is meshed with the gear, and the second rack and the third rack are both connected to the transmission rod in a transmission connection, which is a gear rotatably connected in a connecting seat and coaxially fixedly connected to the transmission rod. The gear in the connecting seat and the second rack and the third rack are all meshed. When the first cylinder drives the first rack to move, the transmission rod rotates accordingly, and the second rack and the third rack in the transmission seat move in opposite directions, driving the cutting component and the receiving component to move closer to each other to complete the cutting, or move away from each other after completing the cutting, and the conveying device transmits the work.

[0015] In the above technical solution, further, it also includes an adsorption component, the adsorption component includes an adsorption chamber set against the outer wall of the protection plate, the adsorption chamber pipe is connected to the fan through the air intake pipe, and the fan and the filter box are connected through a pipe.

[0016] In the above technical scheme, further, in the present technical scheme, the adsorption chamber is a hollow plate body that fits the outer wall of the protective plate, the adsorption chamber and the protective plate are abutted with suction holes, the side of the protective plate is provided with a plurality of through holes, and the suction holes and the through holes are correspondingly arranged.

[0017] In this technical solution,

[0018] The beneficial effects of the utility model are:

[0019] 1. A cutting device is arranged between the first conveyor belt and the second conveyor belt on the table. The cutting device includes a cutting component and a receiving component arranged corresponding to the cutting component. Both the cutting component and the receiving component are slidably arranged on the driving structure. When the plastic film wrapped with the product moves to the second conveyor belt, the conveying device stops conveying, and the driving structure drives the receiving component to move upward and drives the cutting component to move downward. The two cooperate to cut the plastic film. When the cutting component cuts the plastic film, it abuts against the receiving component to ensure that the cutting and sealing are firm.

[0020] 2. The cutting component and the receiving component move towards each other, shortening the travel distance of the cutting component and improving the cutting efficiency;

[0021] 3. The second spring in the receiving plate can provide shock absorption when the protective plate presses the plastic film against the receiving strip. During the heat sealing process, the protective plate can fully press the plastic film against the receiving strip to avoid the situation of unreliable sealing;

[0022] 4. The adsorption chamber is arranged along the length direction of the protection plate and is attached to the outer wall of the protection plate. The air intake holes correspond to the through holes on the protection plate. The fan exhausts air and a negative pressure is generated in the adsorption chamber. The odorous gas generated during heat sealing will be absorbed by the adsorption chamber and enter the filter box for treatment. The position setting of the adsorption chamber, the air intake holes and the through holes of the protection plate can significantly improve the absorption of the generated odorous gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the utility model;

[0024] Figure 2 is a schematic diagram of the structure of a cutting device;

[0025] Figure 3 yes Figure 2 A schematic diagram of the local enlarged structure at point A in the middle;

[0026] Figure 4 yes Figure 2 A schematic diagram of the local enlarged structure at B in the middle;

[0027] Figure 5 yes Figure 2 A schematic diagram of the local enlarged structure at C in the middle;

[0028] Figure 6 It is a structural schematic diagram of another viewing angle of the utility model;

[0029] Figure 7 yes Figure 6 A schematic diagram of the local enlarged structure at D in the middle;

[0030] Figure 8 It is a structural schematic diagram of the adsorption chamber.

[0031] The symbols in the figure are:

[0032] 1. Shrinking unit; 2. Sealing and cutting unit; 3. Bag cover assembly; 4. First conveyor belt; 5. Second conveyor belt; 6. Cutting device; 7. Table; 8. Cutting assembly; 9. Receiving assembly; 10. First fixed horizontal plate; 11. Support column; 12. Pressing plate; 13. First slider; 14. First connecting block; 15. Cutting part; 16. Cutter; 17. Protective plate; 18. Fixed block; 19. Fixed rod; 20. Limiting block; 21. First spring; 22. Support plate; 23. The second slider; 24. The second connecting block; 25. The receiving plate; 26. The fixed column; 27. The second spring; 28. The receiving bar; 29. ​​The first cylinder; 30. The second fixed cross plate; 31. The first rack; 32. The transmission rod; 33. The transmission seat; 34. The second rack; 35. The third rack; 36. The first push rod; 37. The second push rod; 38. The adsorption chamber; 39. The suction duct; 40. The fan; 41. The filter box; 42. The suction hole; 43. The through hole; 44. The box body. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0034] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0036] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0037] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0038] Embodiment 1:

[0039] like Figure 1-Figure 5As shown, this embodiment provides a heat shrink packaging machine, including a shrinking unit 1 and a sealing and cutting unit 2, the sealing and cutting unit 2 is provided with a bagging assembly 3 and a cutting device 6, the sealing and cutting unit 2 includes a table 7, the table 7 is provided with a conveying device, the conveying device includes a first conveyor belt 4 and a second conveyor belt 5, the conveying directions are both toward the shrinking unit 1, a cutting device 6 is arranged between the first conveyor belt 4 and the second conveyor belt 5, the cutting device 6 includes a mounting frame, a receiving assembly 9 and a cutting assembly 8 are slidably arranged on the mounting frame, the cutting assembly 8 and the receiving assembly 9 are both connected to a driving structure, the driving structure is arranged in a box body 44, and the driving structure can drive the cutting assembly 8 and the receiving assembly 9 to move toward each other to cut the plastic film on the table 7. A cutting device 6 is arranged between the first conveyor belt 4 and the second conveyor belt 5 of the table 7. The cutting device 6 includes a cutting component 8 and a receiving component 9 arranged corresponding to the cutting component 8. The cutting component 8 and the receiving component 9 are both slidably arranged on the driving structure. When the plastic film wrapped with the product moves to the second conveyor belt 5, the conveying device stops conveying, and the driving structure drives the receiving component 9 to move upward and drives the cutting component 8 to move downward. The two cooperate to cut the plastic film. When the cutting component 8 cuts the plastic film, it abuts against the receiving component 9 to ensure that the cutting and sealing are firm. At the same time, the cutting component 8 and the receiving component 9 move toward each other, shortening the distance of the cutting component 8 and improving the cutting efficiency.

[0040] The mounting frame includes a first fixed transverse plate 10 disposed in the box body 44 , and support columns 11 perpendicular to the first fixed plate are symmetrically disposed on both sides of the first fixed transverse plate 10 .

[0041] like Figure 2 As shown, the cutting assembly 8 includes a horizontally arranged pressing plate 12, a first sliding block 13 is symmetrically arranged on one side of the pressing plate 12, the first sliding block 13 is slidably connected to the supporting column 11, a first connecting block 14 is connected to the end of the pressing plate 12, the first connecting block 14 is connected to the driving structure, and a cutting portion 15 is connected to the bottom of the pressing plate 12.

[0042] like Figure 2 and Figure 3 As shown, the cutting portion 15 includes a cutter 16 , the top of the cutter 16 is fixedly connected to the pressing plate 12 , the cutter 16 is movably arranged in the protection plate 17 , and the protection plate 17 and the pressing plate 12 are elastically connected.

[0043] like Figure 2-4 As shown, the protection plate 17 is symmetrically arranged on both sides of the cutter 16, the protection plate 17 is connected to a fixing block 18, the fixing block 18 is connected to a fixing rod 19, the fixing rod 19 passes through one end of the pressing plate 12 and is provided with a limiting block 20, the bottom of the limiting block 20 is connected to a first spring 21, and the other end of the first spring 21 is connected to the top of the pressing plate 12. The fixing rod 19, the limiting block 20, and the first spring 21 are a group, and there are a total of several groups equidistantly arranged along the length direction of the protection plate 17 to ensure the cutting stability of the cutting assembly 8.

[0044] like Figure 2 and Figure 5 As shown, the receiving assembly 9 includes a support plate 22, a second slider 23 is symmetrically arranged on one side of the support plate 22, the second slider 23 is slidably connected to the support column 11, a second connecting block 24 is arranged at the end of the support plate 22, and the second connecting block 24 is connected to the driving structure, a plurality of fixed columns 26 are arranged on the top of the support plate 22, the fixed columns 26 are slidably connected to the receiving plate 25, and the fixed columns 26 are sleeved with a second spring 27, one end of the second spring 27 is connected to the top wall of the support plate 22, and the other end is connected to the bottom wall of the receiving plate 25, and a receiving strip 28 is arranged at one end of the receiving plate 25 away from the fixed column 26. The fixed column 26 and the second spring 27 are a group, and there are a total of several groups arranged along the length direction of the receiving plate 25 to ensure that the receiving assembly 9 and the cutting assembly 8 are stable when they are in contact. The cutter 16 is a heat-sealing knife, and the protective plate 17 is elastically connected to the pressure plate 12. During cutting, the cutting component 8 and the receiving component 9 move toward each other, and the protective plates 17 on both sides of the cutter 16 press the plastic film against the receiving strip 28. The pressure plate 12 continues to move downward, and the first spring 21 connected to the protective plate 17 is compressed and deformed, and the protective plate 17 moves upward. The cutter 16 cuts and heat-seals the plastic film, and the second spring 27 in the receiving plate 25 can provide shock absorption when the protective plate 17 presses the plastic film against the receiving strip 28. During the heat-sealing process, the protective plate 17 can fully press the plastic film against the receiving strip 28 to avoid an unreliable seal.

[0045] like Figure 2As shown, the driving structure includes a first cylinder 29, which is fixedly arranged on a second fixed horizontal plate 30 arranged above the first fixed horizontal plate 10, and the output end of the first cylinder 29 is connected to a first rack 31, and the first rack 31 is transmission-connected to a transmission rod 32, and the transmission rod 32 is rotatably arranged on transmission seats 33 on both sides, and the transmission seat 33 is fixedly connected to the side wall of the box body 44, and the transmission seat 33 is slidably connected to a vertical second rack 34 and a third rack 35, and the second rack 34 and the third rack 35 are both transmission-connected to the transmission rod 32, and a first push rod 36 is connected to the top of the second rack 34, and the first push rod 36 is connected to the first connecting block 14 arranged at the end of the pressure plate 12, and a second push rod 37 is connected to the top of the second rack 34, and the second push rod 37 is connected to the second connecting block 24 arranged at the end of the support plate 22. The transmission connection between the first rack 31 and the transmission rod 32 is a gear coaxially fixedly connected to the middle part of the transmission rod 32, the first gear is meshed with the gear, the second rack 34 and the third rack 35 are all connected to the transmission rod 32, the gear rotatably connected in the connection seat is coaxially fixedly connected to the transmission rod 32, the gear in the connection seat and the second rack 34 and the third rack 35 are all meshed, when the first cylinder 29 drives the first rack 31 to move, the transmission rod 32 rotates accordingly, the second rack 34 and the third rack 35 in the transmission seat 33 move in opposite directions, driving the cutting assembly 8 and the receiving assembly 9 to move closer to each other to complete the cutting, or to move away from each other after completing the cutting, and the conveying device transmits. In this embodiment, the driving structure is symmetrically provided with a transmission seat 33 and a second rack 34, a third rack 35, and a push rod respectively connected to the rack on both sides of the receiving assembly 9 and the cutting assembly 8, to ensure the stability of the receiving assembly 9 and the cutting assembly 8 during movement and cutting.

[0046] Embodiment 2:

[0047] This embodiment provides a heat shrink packaging machine, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0048] like Figure 6-8As shown, it also includes an adsorption assembly, which includes an adsorption chamber 38 disposed against the outer wall of the protection plate 17, the adsorption chamber 38 pipeline is connected to the fan 40 through the suction pipeline 39, and the fan 40 and the filter box 41 are connected through a pipeline. The adsorption chamber 38 is a hollow plate body that fits the outer wall of the protection plate 17, and the adsorption chamber 38 and the protection plate 17 are disposed on the side where the adsorption chamber 38 and the protection plate 17 are in contact with each other. A plurality of through holes 43 are disposed on the side of the protection plate 17, and the air suction holes 42 and the through holes 43 are disposed correspondingly. In order to solve the odor generated when the heat-sealing knife heat-seals the plastic bag, the adsorption chamber 38 is arranged along the length direction of the protective plate 17 and fits the outer wall of the protective plate 17. The suction hole 42 corresponds to the through hole 43 on the protective plate 17. The fan 40 draws air and the adsorption chamber 38 generates a negative pressure. The odorous gas generated during heat sealing will be absorbed by the adsorption chamber 38 and enter the filter box 41 for treatment. The filter box 41 has been disclosed in the patent document with publication number CN219076696U and is a prior art, so it will not be elaborated. The position setting of the adsorption chamber 38 and the setting of the suction hole 42 and the through hole 43 of the protective plate 17 can significantly improve the absorption of the generated odorous gas.

[0049] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A heat shrink packaging machine, comprising a shrinking unit (1) and a sealing and cutting unit (2), wherein the sealing and cutting unit (2) is provided with a bagging component (3) and a cutting device (6), characterized in that: The sealing and cutting unit (2) comprises a table (7), the table (7) is provided with a conveying device, the conveying device comprises a first conveying belt (4) and a second conveying belt (5), the conveying direction of both is toward the shrinking unit (1), a cutting device (6) is arranged between the first conveying belt (4) and the second conveying belt (5), the cutting device (6) comprises a mounting frame, a receiving assembly (9) and a cutting assembly (8) are slidably arranged on the mounting frame, the cutting assembly (8) and the receiving assembly (9) are both connected to a driving structure, the driving structure is arranged in a box body (44), and the driving structure can drive the cutting assembly (8) and the receiving assembly (9) to move towards each other to cut the plastic film on the table (7).

2. A heat shrink packaging machine according to claim 1, characterized in that: The mounting frame comprises a first fixed transverse plate (10) arranged in a box body (44), and support columns (11) perpendicular to the first fixed plate are symmetrically arranged on both sides of the first fixed transverse plate (10).

3. A heat shrink packaging machine according to claim 2, characterized in that: The cutting assembly (8) comprises a horizontally arranged pressing plate (12), a first sliding block (13) being symmetrically arranged on one side of the pressing plate (12), the first sliding block (13) being slidably connected to a supporting column (11), a first connecting block (14) being connected to an end of the pressing plate (12), the first connecting block (14) being connected to a driving structure, and a cutting portion (15) being connected to the bottom of the pressing plate (12).

4. A heat shrink packaging machine according to claim 3, characterized in that: The cutting part (15) comprises a cutting knife (16), the top of the cutting knife (16) is fixedly connected to the pressing plate (12), the cutting knife (16) is movably arranged in the protection plate (17), and the protection plate (17) and the pressing plate (12) are elastically connected.

5. A heat shrink packaging machine according to claim 4, characterized in that: The protection plate (17) is symmetrically arranged on both sides of the cutter (16), the protection plate (17) is connected to a fixing block (18), the fixing block (18) is connected to a fixing rod (19), the fixing rod (19) passes through one end of the pressure plate (12) and is provided with a limiting block (20), the bottom of the limiting block (20) is connected to a first spring (21), and the other end of the first spring (21) is connected to the top of the pressure plate (12).

6. A heat shrink packaging machine according to claim 1, characterized in that: The receiving assembly (9) comprises a support plate (22), a second slider (23) is symmetrically arranged on one side of the support plate (22), the second slider (23) is slidably connected to the support column (11), a second connecting block (24) is arranged at the end of the support plate (22), the second connecting block (24) is connected to the driving structure, a plurality of fixed columns (26) are arranged on the top of the support plate (22), the fixed columns (26) are slidably connected to the receiving plate (25), the fixed columns (26) are sleeved with a second spring (27), one end of the second spring (27) is connected to the top wall of the support plate (22), and the other end is connected to the bottom wall of the receiving plate (25), and a receiving bar (28) is arranged at one end of the receiving plate (25) away from the fixed columns (26).

7. The heat shrink packaging machine according to claim 1, characterized in that: The driving structure comprises a first cylinder (29), the first cylinder (29) is fixedly arranged on a second fixed horizontal plate (30) arranged above the first fixed horizontal plate (10), the output end of the first cylinder (29) is connected to a first rack (31), the first rack (31) is transmission-connected to a transmission rod (32), the transmission rod (32) is rotatably arranged on transmission seats (33) on both sides, the transmission seats (33) are fixedly connected to the side walls of the box body (44), and the transmission seats (33) are slidably connected to a vertical The second rack (34) and the third rack (35) are both connected to the transmission rod (32) in a transmission manner. The top of the second rack (34) is connected to a first push rod (36). The first push rod (36) is connected to a first connecting block (14) arranged at the end of the pressure plate (12). The top of the second rack (34) is connected to a second push rod (37). The second push rod (37) is connected to a second connecting block (24) arranged at the end of the support plate (22).

8. A heat shrink packaging machine according to any one of claims 1 to 7, characterized in that: It also includes an adsorption component, which includes an adsorption chamber (38) disposed against the outer wall of the protection plate (17), the adsorption chamber (38) pipeline is connected to the fan (40) through an air intake pipeline (39), and the fan (40) and the filter box (41) are connected through a pipeline.

9. A heat shrink packaging machine according to claim 8, characterized in that: The adsorption chamber (38) is a hollow plate body that fits the outer wall of the protection plate (17). The adsorption chamber (38) and the protection plate (17) are provided with suction holes (42) on the side where they abut against each other. The side of the protection plate (17) is provided with a plurality of through holes (43). The suction holes (42) and the through holes (43) are provided correspondingly.

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