Zipper fixed-length slitting and hot-pressing mechanism

Abstract

The utility model relates to the technical field of zippered bag packaging machines, in particular to a zipper fixed-length slitting and hot-pressing mechanism which comprises a frame and a fixed-length mechanism installed on the side edge of the frame, and the fixed-length mechanism is used for receiving zippers sent out by an unwinding mechanism; a moving mechanism and a heat sealing mechanism are further connected inside the frame in a sliding mode, a cutting-off mechanism and a zipper pressing mechanism are installed on the moving mechanism, and a film is arranged between the zipper pressing mechanism and the heat sealing mechanism in a penetrating mode. The zipper heat-sealing packaging film can be used for zipper heat-sealing of back-sealed bags and edge-ironed bags.

Description

Technical Field

[0001] This utility model relates to the field of zipper bag packaging machine technology, and in particular to a zipper fixed-length cutting and hot-pressing mechanism. Background Technology

[0002] In the field of modern packaging technology, stand-up zipper bags are increasingly becoming the preferred choice for consumers due to their excellent sealing properties and ease of upright storage. The production process of this type of bag involves heat-sealing the zipper to the packaging film, but before heat-sealing, the zipper must first be cut to a length consistent with the width of the packaging film.

[0003] Current processing methods cannot achieve integrated operation of fixed-length conveying, cutting and hot pressing of zippers, resulting in low processing efficiency and affecting production efficiency.

[0004] Based on this, in order to optimize the efficient operation of zipper conveying, cutting and heat sealing, we propose a zipper fixed length cutting and heat pressing mechanism. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the inability to achieve integrated operation of fixed-length conveying, cutting, and hot pressing of zippers, and to propose a fixed-length cutting and hot pressing mechanism for zippers.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a zipper fixed-length cutting and hot-pressing mechanism, including:

[0008] The frame and a length-fixing mechanism installed on the side of the frame, the length-fixing mechanism being used to receive the zipper sent out by the unwinding mechanism and output it according to a specified length;

[0009] Inside the frame, a moving mechanism and a heat sealing mechanism are slidably connected. The moving mechanism is equipped with a cutting mechanism and a pressing chain mechanism, and the film is passed between the pressing chain mechanism and the heat sealing mechanism.

[0010] Furthermore, the fixed length mechanism includes a pressure roller fixing plate and a pressure roller mounting plate fixed to the side of the frame, and multiple guide wheels, transmission rollers and eccentric rollers are rotatably connected to the rear end of the pressure roller fixing plate.

[0011] The drive roller and the eccentric roller are arranged opposite each other to clamp the zipper. A motor mounting plate is fixed to the side of the pressure roller fixing plate, and a motor is fixedly mounted on the motor mounting plate. The shaft end of the motor is fixed to the shaft end of the drive roller through a coupling.

[0012] Furthermore, both the pressure roller fixing plate and the pressure roller mounting plate are provided with elongated holes. The eccentric roller is rotatably connected to the pressure roller fixing plate and the pressure roller mounting plate through eccentric sleeves on the two journals. A handwheel is also fixedly installed on the outer side of one of the shaft ends of the eccentric roller.

[0013] The rotating holes of the pressure roller fixing plate and the pressure roller mounting plate are also fitted with ball-head plugs, and the outer side of the eccentric sleeve is provided with a groove that is adapted to engage with the telescopic end of the ball-head plug.

[0014] Furthermore, the moving mechanism includes a movable mounting plate, on which a left adjustment plate and a right adjustment plate are respectively mounted on both sides;

[0015] Both the left and right adjustment plates slide against each other via linear bearings and guide posts inside the frame. A lead screw nut sleeve is also fixed on the right adjustment plate, with a nut fixedly installed on the inner side of the lead screw nut sleeve. An adjustment screw is rotatably connected to the side of the frame. A handwheel is fixedly installed at one end of the adjustment screw, and the other end is threadedly connected to the nut. When the handwheel is rotated, the moving part can move left and right.

[0016] Furthermore, a positioning clamp is also installed on the right adjustment plate, which can fix the moving part when the positioning block screw is tightened.

[0017] Furthermore, a guide frame for conveying zippers is fixedly installed at the inner end of the right adjustment plate, and the right adjustment plate has a clearance hole at the guide frame to avoid the movement of the zippers.

[0018] The movable mounting plate is further equipped with a guide plate on its end face, and the guide plate has a through groove in the middle.

[0019] Furthermore, the cutting mechanism includes a cutting mounting plate fixed to a movable mounting plate, and a cutting cylinder is fixedly mounted on the cutting mounting plate;

[0020] A cutter is fixedly installed on the shaft end of the cutting cylinder. A mold base and a mold sleeve placed inside the mold base are also installed on the cutting mounting plate. The mold sleeve has a cutting groove for the cutter to slide inside. The mold base has a groove for the zipper to slide and communicate with it inside. The tail ends of the mold base and the mold sleeve along the zipper conveying direction are also provided with material discharge grooves.

[0021] Furthermore, the chain pressing mechanism includes a chain pressing mounting plate fixed on a movable mounting plate, a chain pressing cylinder fixedly mounted on the chain pressing mounting plate, an adjusting plate fixedly mounted on the shaft end of the chain pressing cylinder, and a zipper pressing block fixedly mounted on the bottom of the adjusting plate.

[0022] The adjusting plate is also equipped with a guide post through which the pressure chain mounting plate is installed.

[0023] Furthermore, the heat sealing mechanism includes a heat sealing mounting plate that slides on a guide post inside the frame. A heat sealing cylinder is fixedly mounted below the heat sealing mounting plate. A sealing roller mounting plate is fixedly mounted on the shaft end of the heat sealing cylinder. A sealing roller is connected to the upper end of the sealing roller mounting plate through a heat insulation pad. A heating element is installed inside the sealing roller through fasteners.

[0024] Furthermore, a guide post 2 is fixedly installed at the bottom of the sealing roller mounting plate and passes through the heat sealing mounting plate. Deformation clamps are also provided on both sides of the heat sealing mounting plate at its sliding holes. The heat sealing mounting plate is slidably fixed to the guide post by fasteners and deformation clamps.

[0025] The present invention proposes a zipper fixed-length cutting and hot-pressing mechanism, which has the following advantages: the mechanism of the present invention can realize the fixed-length conveying, cutting and hot-pressing of zippers, meet the high-efficiency production of zipper heat sealing in packaging film, and can be used for zipper heat sealing of back-sealed bags and hot-stamped bags. Attached Figure Description

[0026] Figure 1 This is a perspective view of the present utility model;

[0027] Figure 2 This is a schematic diagram of the frame structure of this utility model;

[0028] Figure 3 This is a cross-sectional view of the fixed-length mechanism of this utility model;

[0029] Figure 4 This is a front view of the fixed-length mechanism of this utility model;

[0030] Figure 5 This is a schematic diagram of the moving mechanism structure of this utility model.

[0031] Figure 6 This is a schematic diagram of the cutting mechanism structure of this utility model;

[0032] Figure 7 This is a schematic diagram of the material cutting and slotting structure of this utility model.

[0033] Figure 8 This is a schematic diagram of the chain pressing mechanism of this utility model.

[0034] Figure 9 This is a schematic diagram of the heat sealing mechanism of this utility model.

[0035] In the diagram: 1. Frame; 11. Guide column; 2. Fixed length mechanism; 21. Pressure roller fixing plate; 22. Pressure roller mounting plate; 23. Guide wheel; 24. Transmission roller; 25. Eccentric roller; 251. Eccentric sleeve; 26. Motor mounting plate; 27. Motor; 271. Coupling; 28. Handwheel one; 29. ​​Ball head plug; 3. Unwinding mechanism; 4. Moving mechanism; 41. Moving mounting plate; 42. Left side adjusting plate; 43. Right side adjusting plate; 44. Screw nut sleeve; 45. Nut; 46. Adjusting screw; 461. Handwheel two; 47. Fixed length mechanism; 28. Pressure roller fixing plate; 29. ​​Pressure roller mounting plate; 20. Guide wheel; 20. Transmission roller; 20. Guide roller; 21. Guide roller fixing plate; 22. Pressure roller mounting plate; 20. Guide roller; 21. Guide roller fixing plate; 22. Pressure roller mounting plate; 23. Guide roller; 24. Transmission roller; 25. Eccentric roller; 251. Eccentric sleeve; 26. Motor mounting plate; 27. Motor; 28. Handwheel one; 29. ​​Ball head plug; 20. Guide roller; 20. Guide roller; 21. Guide roller fixing plate; 20. Guide roller mounting plate; 21. Guide roller fixing plate; 22. Pressure roller mounting plate; 23. Guide roller; 24. Transmission roller; 25. Eccentric roller; 26. Eccentric roller; 27. Eccentric roller; 28. Guide roller; 29. ​​Ball head plug; 20. Guide roller; 20. Guide roller; 21. Guide roller fixing plate; 20. Guide roller; 21. Guide roller fixing plate; 22. Guide roller mounting plate; 23. Guide roller; 24. 48. Clamping block; 49. Guide frame; 50. Guide plate; 51. Heat sealing mechanism; 52. Heat sealing mounting plate; 53. Heat sealing cylinder; 54. Sealing roller mounting plate; 55. Heat insulation pad; 56. Sealing roller; 57. Heating element; 58. Guide post II; 69. Deformation clamp; 60. Cutting mechanism; 61. Cutting mounting plate; 62. Cutting cylinder; 63. Cutter; 64. Mold base; 65. Mold sleeve; 66. Material cutting and grooving; 71. Chain pressing mechanism; 72. Chain pressing mounting plate; 73. Chain pressing cylinder; 74. Adjusting plate; 75. Zipper pressing block; 76. Guide post I. Detailed Implementation

[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0037] Reference Figure 1-9 As one embodiment of this utility model, a zipper fixed-length cutting and hot-pressing mechanism is disclosed. Specifically, the cutting and hot-pressing mechanism includes a frame 1 and a fixed-length mechanism 2 installed on the side of the frame 1. The fixed-length mechanism 2 is used to receive the zipper sent out by the unwinding mechanism 3 and output it according to the specified length. Of course, the unwinding mechanism 3 can be a motor-driven reel to unwind the zipper. This method is a conventional method for those skilled in the art and will not be described in detail here.

[0038] Inside the frame 1, a moving mechanism 4 and a heat sealing mechanism 5 are slidably connected. The moving mechanism 4 is equipped with a cutting mechanism 6 and a pressing chain mechanism 7, and the film is passed between the pressing chain mechanism 7 and the heat sealing mechanism 5.

[0039] In some embodiments, the fixed length mechanism 2 of the present invention includes a pressure roller fixing plate 21 and a pressure roller mounting plate 22 fixed on the side of the frame 1. A plurality of guide wheels 23, a transmission roller 24 and an eccentric roller 25 are rotatably connected to the end face of the pressure roller fixing plate 21. Specifically, in this embodiment, two guide wheels 23 are provided, and the eccentric roller 25 is installed above the transmission roller 24.

[0040] The transmission roller 24 and the eccentric roller 25 are arranged opposite to each other to clamp the zipper. The rear end of the pressure roller fixing plate 21 is fixed with a motor mounting plate 26, and a motor 27 is fixedly mounted on the motor mounting plate 26. The shaft end of the motor 27 is fixed to the shaft end of the transmission roller 24 through a coupling 271.

[0041] Based on the above embodiments, in this embodiment, both the pressure roller fixing plate 21 and the pressure roller mounting plate 22 are provided with elongated holes. The eccentric roller 25 is rotatably connected to the pressure roller fixing plate 21 and the pressure roller mounting plate 22 through the eccentric sleeves 251 on the two journals. A handwheel 28 is also fixedly installed on the outer side of one of the shaft ends of the eccentric roller 25.

[0042] The rotating holes of the pressure roller fixing plate 21 and the pressure roller mounting plate 22 are also fitted with ball-head plugs 29, and the outer side of the eccentric sleeve 251 is provided with a slot that is adapted to engage with the telescopic end of the ball-head plug 29.

[0043] Specifically, after the zipper enters the guide wheel 23 via the unwinding mechanism 3, it passes between the transmission roller 24 and the eccentric roller 25. When the handwheel 28 is rotated, the entire eccentric roller 25 rotates until the ball head plug 29 is stuck in the groove of the eccentric sleeve 251. At this time, the zipper is clamped by the transmission roller 24 and the eccentric roller 25. When clamped, the zipper conveying length is controlled by the motor 27 to achieve fixed-length conveying and cutting. Conversely, the position of the eccentric sleeve 251 is changed by continuing to rotate the handwheel 28. At this time, the distance between the transmission roller 24 and the eccentric roller 25 increases, and the zipper can be released.

[0044] In some embodiments, the moving mechanism 4 of the present invention includes a moving mounting plate 41, and a left adjustment plate 42 and a right adjustment plate 43 are respectively installed on both sides of the moving mounting plate 41. Of course, the moving mounting plate 41, the left adjustment plate 42 and the right adjustment plate 43 are fixedly connected and together form a U-shaped structural component.

[0045] The left adjustment plate 42 and the right adjustment plate 43 slide together via a linear bearing and a guide post 11 inside the frame 1. A screw nut sleeve 44 is also fixed on the right adjustment plate 43. A nut 45 is fixedly installed on the inner side of the screw nut sleeve 44. An adjustment screw 46 is rotatably connected to the side of the frame 1. A handwheel 461 is fixedly installed at one end of the adjustment screw 46, and the other end is threadedly connected to the nut 45. When the handwheel 461 is rotated, the moving part can move left and right.

[0046] Based on the above embodiments, in this embodiment, the side of the frame 1 is rotatably connected to an adjusting screw 46. One end of the adjusting screw 46 is fixedly installed with a handwheel 461, and the other end is threadedly connected to the nut 45. A positioning clamping block 47 is also installed on the right adjusting plate 43. Specifically, the positioning clamping block 47 in this embodiment should include a round hole adapted to the guide post 11, and a deformation port communicating with the round hole from the outside. The outer side of the guide post 11 slidably connected to the positioning clamping block 47 can be fastened with bolts or other fasteners through the deformation port. The positioning clamping block 47 is driven by clamping force to clamp the outer side of the guide post 11, thereby locking and fixing the sliding position of the entire moving mechanism 4.

[0047] Specifically, a positioning clamp 47 is also installed on the right adjustment plate 43. When the positioning clamp screw is tightened, the moving part can be fixed. When the positioning clamp 47 is loosened and the handwheel 461 is rotated, the entire moving mechanism 4 can be driven to move left and right by adjusting the thread connection force of the screw 46 and the nut 45. When it moves to the required position, the device of fixing the moving mechanism 4 can be fixed by tightening the positioning clamp 47 with fasteners.

[0048] Furthermore, in this embodiment, a guide frame 48 for conveying zippers is fixedly installed at the inner end of the right adjustment plate 43. The right adjustment plate 43 has a clearance hole at the guide frame 48 to allow the zipper to move in. That is, the zipper on the unwinding mechanism 3 can enter the inner side of the frame 1 through the clearance hole. Preferably, the guide frame 48 in this embodiment is set as a U-shaped structure to facilitate the guidance of the zipper.

[0049] A guide plate 49 is also installed on the end face of the movable mounting plate 41. The guide plate 49 has a through groove in the middle. The purpose of setting the through groove is that after the zipper is cut, the cut zipper can be pressed down along the through groove by the pressing mechanism 7 so that it can be heat-sealed by the heat sealing mechanism 5 and the film. Of course, the through groove has a guiding effect on the zipper. After the zipper passes through the cutting mechanism 6 and is still not cut, the zipper moves in the through groove of the guide plate 49. When it reaches the set length, the length fixing mechanism 2 stops running and the cutting device cuts the zipper. In this way, the length-fixed conveying and cutting of the zipper is completed.

[0050] In some embodiments, the cutting mechanism 6 of the present invention includes a cutting mounting plate 61 fixed on a movable mounting plate 41, and a cutting cylinder 62 is fixedly mounted on the cutting mounting plate 61.

[0051] A cutter 63 is fixedly mounted on the shaft end of the cutting cylinder 62. A mold base 64 and a mold sleeve 65 placed inside the mold base 64 are also mounted on the cutting mounting plate 61. The mold sleeve 65 has a groove for the cutter 63 to slide inside. The mold base 64 has a groove for the zipper to slide and communicate with it inside. The mold base 64 and the mold sleeve 65 are also provided with a material feeding groove 66 at their tail ends along the zipper conveying direction. It should be noted that in this embodiment, the size of the material feeding groove 66 is slightly larger than that of the zipper, so that the zipper can be directly attached to the packaging film after being cut laterally. That is, when cutting the zipper, the zipper is first kept to pass through the inside of the mold base 64. The mold sleeve 65 guides the cutter 63. The cutter 63 cuts the zipper laterally under the drive of the cutting cylinder 62. Since the material feeding groove 66 is provided on the rear side of the mold base 64 and the mold sleeve 65, it is convenient to feed the cut zipper.

[0052] Furthermore, in this embodiment, the chain pressing mechanism 7 includes a chain pressing mounting plate 71 fixed on the movable mounting plate 41, a chain pressing cylinder 72 fixedly mounted on the chain pressing mounting plate 71, an adjusting plate 73 fixedly mounted on the shaft end of the chain pressing cylinder 72, and a zipper pressing block 74 fixedly mounted on the bottom of the adjusting plate 73.

[0053] When the chain pressing cylinder 72 is a single-axis cylinder, the adjusting plate 73 is also equipped with a guide post 75 that passes through the chain pressing mounting plate 71. A linear bearing adapted to the guide post 75 can be installed on the chain pressing mounting plate 71. Of course, if the chain pressing cylinder 72 is a multi-axis cylinder, the guide post 75 does not need to be designed. The two methods are only equivalent replacements in form and should not be overly restricted. Under the drive of the chain pressing cylinder 72, the zipper pressing block 74 can press the zipper onto the packaging film. The chain pressing mechanism 7 is installed on the movable mounting plate 41 and moves left and right with the movable mechanism 4 to facilitate position adjustment.

[0054] Based on the above embodiments, the heat sealing mechanism 5 in this embodiment includes a heat sealing mounting plate 51 that slides on the guide post 11 inside the frame 1. A heat sealing cylinder 52 is fixedly installed below the heat sealing mounting plate 51. A sealing roller mounting plate 53 is fixedly installed on the shaft end of the heat sealing cylinder 52. A sealing roller 55 is connected to the upper end of the sealing roller mounting plate 53 through a heat insulation pad 54. A heating element 56 is installed inside the sealing roller 55 through fasteners. The heating element 56 can be set as a heating wire.

[0055] Specifically, a guide post 57 passing through the heat-sealing mounting plate 51 is fixedly installed at the bottom of the sealing roller mounting plate 53. Of course, a linear bearing adapted to the guide post 57 can also be installed on the heat-sealing mounting plate 51. In addition, the design of the guide post 57 in this embodiment is based on the heat-sealing cylinder 52 as a single-axis cylinder. Those skilled in the art can also directly use a multi-axis cylinder, which will not be elaborated here. Deformation clamps 58 are also provided on both sides of the heat-sealing mounting plate 51 at its sliding holes. The heat-sealing mounting plate 51 is slidably fixed to the guide post 11 by fasteners and deformation clamps 58. In this embodiment, the fasteners can all be bolts, as described in the structure and principle of the positioning clamp 47 above. In this embodiment, the deformation clamps 58 of the heat-sealing mounting plate 51 can also be clamped and locked by fasteners, so as to achieve the purpose of convenient locking and fixing after adjusting the position of the entire heat-sealing mechanism 5.

[0056] In other words, in this invention, when the zipper is cut, the sealing roller 55 presses the zipper under the drive of the heat sealing cylinder 52 to heat seal the zipper onto the packaging film. The heat sealing mechanism 5 is installed on the guide post 11 on the lower side of the packaging film. The position can be adjusted left and right by loosening the fastener at the deformation clamp 58.

[0057] In summary, the mechanism of this utility model can realize fixed-length conveying, cutting and hot pressing of zippers, meet the high-efficiency production of zipper heat sealing in packaging film, and can be used for zipper heat sealing of back-sealed bags and hot-stamped bags.

[0058] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mechanism for heat sealing a fixed length of a slide fastener, characterized by, include: The frame (1) and the length-fixing mechanism (2) installed on the side of the frame (1), the length-fixing mechanism (2) is used to receive the zipper sent out by the unwinding mechanism (3) and output it according to the specified length; Inside the frame (1), a moving mechanism (4) and a heat sealing mechanism (5) are slidably connected. The moving mechanism (4) is equipped with a cutting mechanism (6) and a pressing chain mechanism (7). The film is passed between the pressing chain mechanism (7) and the heat sealing mechanism (5).

2. The mechanism according to claim 1, wherein: The fixed length mechanism (2) includes a pressure roller fixing plate (21) and a pressure roller mounting plate (22) fixed on the side of the frame (1). Multiple guide wheels (23), transmission rollers (24) and eccentric rollers (25) are rotatably connected to the end face of the pressure roller fixing plate (21). The drive roller (24) and the eccentric roller (25) are arranged opposite to each other to clamp the zipper. The rear end of the pressure roller fixing plate (21) is fixed with a motor mounting plate (26). A motor (27) is fixedly mounted on the motor mounting plate (26). The shaft end of the motor (27) is fixed to the shaft end of the drive roller (24) through a coupling (271).

3. The mechanism according to claim 2, wherein: The pressure roller fixing plate (21) and the pressure roller mounting plate (22) are both provided with elongated holes. The eccentric roller (25) is rotatably connected to the pressure roller fixing plate (21) and the pressure roller mounting plate (22) through the eccentric sleeve (251) on the two journals. A handwheel (28) is also fixedly installed on the outer side of one of the shaft ends of the eccentric roller (25). The rotating holes of the pressure roller fixing plate (21) and the pressure roller mounting plate (22) are also fitted with ball head plugs (29), and the outer side of the eccentric sleeve (251) is provided with a slot that is adapted to engage with the telescopic end of the ball head plugs (29).

4. The mechanism according to claim 1, wherein: The moving mechanism (4) includes a movable mounting plate (41), and a left adjustment plate (42) and a right adjustment plate (43) are respectively installed on both sides of the movable mounting plate (41). The left adjustment plate (42) and the right adjustment plate (43) slide against each other via a linear bearing and a guide post (11) inside the frame (1). A screw nut sleeve (44) is also fixed on the right adjustment plate (43). A nut (45) is fixedly installed on the inner side of the screw nut sleeve (44). An adjustment screw (46) is rotatably connected to the side of the frame (1). A handwheel (461) is fixedly installed at one end of the adjustment screw (46), and the other end is threadedly connected to the nut (45). When the handwheel (461) is rotated, the moving part can move left and right.

5. The mechanism according to claim 4, wherein: The right-side adjustment plate (43) is also equipped with a positioning clamp (47), which can fix the moving part when the positioning block screw is tightened.

6. The mechanism according to claim 4, wherein: A guide frame (48) for conveying zippers is fixedly installed at the inner end of the right adjustment plate (43), and the right adjustment plate (43) has a clearance hole at the guide frame (48) to avoid the movement of the zipper. The movable mounting plate (41) is further equipped with a guide plate (49) on its end face, and the guide plate (49) has a through groove in the middle.

7. The zipper fixed-length cutting and hot-pressing mechanism according to claim 1, characterized in that: The cutting mechanism (6) includes a cutting mounting plate (61) fixed on a movable mounting plate (41), and a cutting cylinder (62) is fixedly mounted on the cutting mounting plate (61); A cutter (63) is fixedly installed on the shaft end of the cutting cylinder (62). A mold base (64) and a mold sleeve (65) placed inside the mold base (64) are also installed on the cutting mounting plate (61). The mold sleeve (65) has a cutting groove for the cutter (63) to slide inside. The mold base (64) has a zipper to slide and communicate with. The mold base (64) and the mold sleeve (65) are also provided with a feeding groove (66) at their tail ends along the zipper conveying direction.

8. The mechanism according to claim 1, wherein: The chain pressing mechanism (7) includes a chain pressing mounting plate (71) fixed on a movable mounting plate (41), a chain pressing cylinder (72) fixedly mounted on the chain pressing mounting plate (71), an adjusting plate (73) fixedly mounted on the shaft end of the chain pressing cylinder (72), and a zipper pressing block (74) fixedly mounted on the bottom of the adjusting plate (73). The adjusting plate (73) is also equipped with a guide post (75) through which the pressure chain mounting plate (71) passes.

9. The mechanism according to claim 1, wherein: The heat sealing mechanism (5) includes a heat sealing mounting plate (51) that slides on a guide post (11) inside the frame (1). A heat sealing cylinder (52) is fixedly installed below the heat sealing mounting plate (51). A sealing roller mounting plate (53) is fixedly installed on the shaft end of the heat sealing cylinder (52). A sealing roller (55) is connected to the upper end of the sealing roller mounting plate (53) through a heat insulation pad (54). A heating element (56) is installed inside the sealing roller (55) through fasteners.

10. The mechanism according to claim 9, wherein: The bottom of the sealing roller mounting plate (53) is fixedly installed with a guide post (57) that passes through the heat sealing mounting plate (51). Deformation clamps (58) are also provided on both sides of the heat sealing mounting plate (51) at its sliding holes. The heat sealing mounting plate (51) is slidably fixed to the guide post (11) by fasteners and deformation clamps (58).

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