A waste film gripping and flipping mechanism for a sealing and cutting machine

By designing a waste film clamping and flipping mechanism, and utilizing the cooperation of cylinder components and flipping plates, the problem of the sealing and cutting machine being unable to effectively collect waste film before horizontal sealing was solved, achieving efficient waste film collection, improving production efficiency and reducing workers' labor time.

CN117799915BActive Publication Date: 2026-05-26SUZHOU SHENGBAIWEI PACKAGE EQUIP
View PDF 2 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUZHOU SHENGBAIWEI PACKAGE EQUIP
Filing Date
2023-12-25
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

The existing waste film collection mechanism of the sealing and cutting machine cannot effectively handle the discontinuous waste film generated by the sealing and cutting machine before horizontal sealing, resulting in low production efficiency and increased labor time for workers.

Method used

A waste membrane clamping and flipping mechanism was designed, including a vertical drive cylinder assembly with a flipping shaft driving an mounting ring. Waste membrane collection is achieved through a pneumatic mechanism. The waste membrane is collected by vertically driving gas through the flipping mechanism. The waste membrane is flipped and clamped for collection through the pneumatic mechanism. By implementing the waste flipping mechanism, the waste membrane is flipped and collected through the pneumatic mechanism. The waste membrane is flipped and collected through the cooperation of the waste flipping cylinder assembly and the flipping plate through the pneumatic mechanism.

Benefits of technology

It enables the discontinuous collection of waste film from the horizontal sealing and cutting machine in segments, improving production efficiency and reducing workers' labor time.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN117799915B_ABST
    Figure CN117799915B_ABST
Patent Text Reader

Abstract

This invention discloses a waste film clamping and flipping mechanism for a sealing and cutting machine, comprising a main mounting frame and a film cutting support platform. The main mounting frame houses an upper cutting blade assembly for facilitating the cutting of the sealing film. A vertical drive cylinder assembly is located at the rear of the main mounting frame. A flipping shaft is rotatably mounted inside the main mounting frame and connected to the vertical drive cylinder assembly. A mounting ring is fixedly mounted on the surface of the flipping shaft. The mounting ring, through hexagonal bolts and a waste film clamping plate, causes the clamping rubber block to separate from the waste film. An external air pump delivers gas to a threaded joint via a connecting pipe, and the gas is blown out through an air blowing pipe, dislodging the waste film from the transition support plate into an external collection box. This mechanism facilitates the collection of discontinuous segments of waste film cut by a sealing and cutting machine with a horizontal sealing front, avoiding the limitations of traditional film pulling and waste film winding mechanisms in collecting discontinuous segments of waste film.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This invention relates to the field of sealing and cutting machine technology, and in particular to a waste film clamping and flipping mechanism for sealing and cutting machines. Background Technology

[0002] Sealing and cutting machines are fully automatic, unmanned packaging machines widely used in mass production packaging lines. They offer high efficiency, automatically feeding and punching film, automatically sealing and cutting film, and automatically rolling up waste material. Only manual adjustment of the film guiding system and the feeding conveyor platform is required. Suitable for products of varying widths and heights, they can be used in conjunction with automated packaging lines and are the preferred choice for sealing and heat-shrink packaging.

[0003] Currently, most vertical sealing and cutting machines on the market use cylinders to drive the upper and lower blades of the sealing mechanism to move relative to each other to meet the sealing and cutting requirements. The waste film generated is mainly collected by the film pulling mechanism and the waste film winding mechanism. For higher-end products, a sealing and cutting machine with horizontal sealing in front is required. In this case, the waste film is in segments and not continuous. The original film pulling mechanism and waste film winding mechanism cannot be used. It is necessary to design a separate vertical side sealing and waste film clamping mechanism for sealing and cutting machines with horizontal sealing in front to meet production needs. Therefore, a waste film clamping and flipping mechanism for sealing and cutting machines is proposed. Summary of the Invention

[0004] To overcome the shortcomings of existing equipment technology, the purpose of this invention is to provide a side sealing mechanism and a waste film clamping and flipping mechanism for a vertical sealing and cutting machine. This is mainly for sealing and cutting machines that require horizontal sealing beforehand, where the waste film is in segments. By using the vertical side sealing and waste film clamping and flipping mechanism, the product can be bagged smoothly and the waste film can be collected in the waste film box, improving the versatility of product packaging, reducing workers' labor time, and increasing production efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A waste film clamping and flipping mechanism for a sealing and cutting machine includes a main mounting frame and a film cutting support platform. The main mounting frame houses an upper cutting blade assembly for facilitating the cutting of the sealing film. A vertical drive cylinder assembly is located at the rear of the main mounting frame. A flipping shaft is rotatably mounted inside the main mounting frame and connected to the vertical drive cylinder assembly. A mounting ring is fixedly mounted on the surface of the flipping shaft. A waste film clamping plate is mounted on the left side of the mounting ring via an internal hexagonal bolt. A mounting base is fixedly mounted on the right side of the waste film clamping plate. An air blowing pipe is fixedly mounted inside the mounting base, and a threaded connector is fixedly mounted on the rear side of the air blowing pipe. A flipping drive cylinder assembly is located at the rear of the main mounting frame. A flipping plate is rotatably mounted on the surface of the flipping shaft and connected to the flipping drive cylinder assembly. A transition support plate is fixedly mounted on the top of the flipping plate. The contact surface between the waste film clamping plate and the transition support plate is fixedly mounted on a clamping rubber block. A detection photoelectric component is located inside the main mounting frame.

[0007] Preferably, the upper cutting blade assembly includes a telescopic cylinder disposed on the top of the main mounting frame, a movable frame is fixedly disposed at the output end of the telescopic cylinder, a film cutting and sealing blade is fixedly disposed on the front side of the movable frame, and a limit component is disposed on the rear side of the movable frame.

[0008] Preferably, the limiting component includes a limiting slide sleeve disposed on the rear side of the movable frame, and a limiting slide rail is slidably disposed inside the limiting slide sleeve, and the limiting slide rail is fixedly installed inside the main mounting frame.

[0009] Preferably, the vertical drive cylinder assembly includes a tail fixing pin disposed inside the mounting main frame, a vertical cylinder is fixedly disposed on the surface of the tail fixing pin, a drive rack is fixedly disposed on the output end of the vertical cylinder, a clamping drive gear is meshed on the front side of the drive rack, and the clamping drive gear is fixedly mounted on the surface of the flip shaft.

[0010] Preferably, a protective cover is fixedly provided on the rear side of the main mounting frame, and the drive rack and clamping drive gear are both located inside the protective cover, which is a metal protective cover.

[0011] Preferably, the tilting drive cylinder assembly includes a tail rotating pin disposed inside the mounting main frame, a tilting cylinder rotatably disposed on the surface of the tail rotating pin, a connector fixedly disposed at the output end of the tilting cylinder, the connector being connected to the tilting plate via a rotating shaft, and the connector being rotatably connected to the rotating shaft.

[0012] Preferably, the detection photoelectric component includes a connector disposed inside the main mounting frame, and a photoelectric sensor is fixedly disposed inside the connector.

[0013] Preferably, there are two waste film clamping plates, and the two waste film clamping plates are symmetrically distributed. Each waste film clamping plate is provided with a connecting ring for connecting with the mounting ring. The waste film clamping plate is made of metal.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This waste film clamping and turning mechanism for a sealing and cutting machine uses a vertical drive cylinder assembly to rotate the turning shaft forward. This causes the mounting ring, through the internal hexagonal bolts and the waste film clamping plate, to clamp the rubber block and fix the position of the sealing film. The cutting assembly removes excess sealing film and heats and seals the edges. After sealing, the turning drive cylinder assembly rotates the turning plate, causing the transition support plate to flip downwards. Simultaneously, the vertical drive cylinder assembly drives the turning shaft to rotate, causing the mounting ring to move the front end of the waste film clamping plate further downwards. When the waste film clamping plate and the transition support plate... When the plate flips to the moving angle, the vertical drive cylinder assembly drives the flipping shaft to rotate in the opposite direction, causing the mounting ring to separate the clamping rubber block from the waste film through the internal hex bolts and the waste film clamping plate. An external air pump delivers gas to the threaded joint through the connecting pipe and blows it out through the air blowing pipe, blowing the waste film on the transition support plate into the external collection box. This achieves the goal of facilitating the collection of discontinuous waste film sections cut by the front sealing and cutting machine, avoiding the situation where the original film pulling mechanism and waste film winding mechanism could not collect discontinuous waste film sections.

[0016] 2. The waste film clamping and flipping mechanism for the sealing and cutting machine drives the drive rack to move upward through the output end of the vertical cylinder. The drive rack drives the clamping drive gear to rotate forward, which facilitates the clamping drive gear to drive the flipping shaft to rotate forward. This facilitates the mounting ring to drive the waste film clamping plate to push the clamping rubber block to clamp and fix the side of the sealing film.

[0017] 3. The waste film clamping and flipping mechanism for the sealing and cutting machine drives the connecting piece to move upward through the output end of the flipping cylinder, so that the connecting piece can drive the flipping plate to flip through the rotating shaft, so that the flipping plate can drive the transition support plate to flip, and thus facilitate the transition support plate to move to the top opening of the external waste film collection box. Attached Figure Description

[0018] Figure 1 This is an isometric view of the structure of the present invention;

[0019] Figure 2 This is a rear view of the structure of the present invention;

[0020] Figure 3 for Figure 2 Enlarged view of the structure at point A;

[0021] Figure 4 This is a partial structural diagram of the present invention;

[0022] Figure 5 This is a partial rear view of the structure of the present invention.

[0023] In the diagram: 1. Main frame; 2. Film cutting support platform; 3. Telescopic cylinder; 4. Moving frame; 5. Film cutting and sealing knife; 6. Limiting sleeve; 7. Limiting slide rail; 8. Tail fixing pin; 9. Vertical cylinder; 10. Drive rack; 11. Clamping drive gear; 12. Tilting shaft; 13. Mounting ring; 14. Waste film clamping plate; 15. Clamping rubber block; 16. Mounting seat; 17. Air blowing pipe; 18. Threaded joint; 19. Tail rotating pin; 20. Tilting cylinder; 21. Connector; 22. Tilting plate; 23. Transition support plate; 24. Protective cover; 25. Connecting seat; 26. Photoelectric sensor. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0025] Reference Figure 1-5A waste film clamping and flipping mechanism for a sealing and cutting machine includes a main mounting frame 1 and a film cutting support platform 2. The main mounting frame 1 has an upper cutting blade assembly for cutting the packaging film. The upper cutting blade assembly includes a telescopic cylinder 3 mounted on the top of the main mounting frame 1. A movable frame 4 is fixedly mounted at the output end of the telescopic cylinder 3. A film cutting and sealing blade 5 is fixedly mounted on the front side of the movable frame 4, and a limit assembly is mounted on the rear side of the movable frame 4. The telescopic cylinder 3 and the movable frame 4 facilitate the pushing of the film cutting and sealing blade 5 to cut off the waste packaging film and seal the edges of the packaging film. The cutting blade and heated sealing plate inside the film cutting and sealing blade 5 facilitate simultaneous edge cutting and sealing of the packaging film. A vertical drive cylinder assembly is mounted on the rear side of the main mounting frame 1. The unit is equipped with a rotating rotating shaft 12, which is connected to the vertical drive cylinder assembly. A mounting ring 13 is fixedly mounted on the surface of the rotating shaft 12. Two waste film clamping plates 14 are mounted on the left side of the mounting ring 13 via internal hex bolts. These two clamping plates 14 are symmetrically distributed. Each waste film clamping plate 14 has a connecting ring for connecting to the mounting ring 13. The waste film clamping plates 14 are made of metal and are designed to prevent wrinkles in the sealing film. The vertical drive cylinder assembly includes a tail fixing pin 8 located inside the main mounting frame 1. A vertical cylinder 9 is fixedly mounted on the surface of the tail fixing pin 8. A drive rack 10 is fixedly mounted on the output end of the vertical cylinder 9. A clamping drive gear 11 is engaged on the front side of the rotating shaft 12. The clamping drive gear 11 is fixedly mounted on the surface of the rotating shaft 12. The vertical cylinder 9 drives the output end to move the drive rack 10 upward. The drive rack 10 drives the clamping drive gear 11 to rotate forward, which facilitates the clamping drive gear 11 to drive the rotating shaft 12 to rotate forward. This allows the mounting ring 13 to drive the waste film clamping plate 14 to push the clamping rubber block 15 to clamp and fix the side of the encapsulation film. A mounting base 16 is fixedly mounted on the right side of the waste film clamping plate 14. An air blowing pipe 17 is fixedly mounted inside the mounting base 16. A threaded connector 18 is fixedly mounted on the rear side of the air blowing pipe 17. A rotating drive cylinder assembly is mounted on the rear side of the main mounting frame 1. A rotating plate 22 is rotatably mounted on the surface of the rotating shaft 12. The rotating plate 22 is connected to the tilting drive cylinder assembly. A transition support plate 23 is fixedly installed on the top of the tilting plate 22. The contact surface between the waste film clamping plate 14 and the transition support plate 23 is fixedly installed on the clamping rubber block 15. The tilting drive cylinder assembly includes a tail rotating pin 19 installed inside the main frame 1. A tilting cylinder 20 is rotatably mounted on the surface of the tail rotating pin 19. A connecting piece 21 is fixedly installed at the output end of the tilting cylinder 20. The connecting piece 21 is connected to the tilting plate 22 through a rotating shaft. The connecting piece 21 and the rotating shaft are rotatably connected. The tilting cylinder 20 drives the output end to move the connecting piece 21 upward, thereby facilitating the tilting plate 22 to tilt via the rotating shaft. This, in turn, facilitates the tilting plate 22 to tilt the transition support plate 23.This facilitates the movement of the transition support plate 23 to the top opening of the external waste film collection box. The main frame 1 is equipped with a detection photoelectric component. This waste film clamping and flipping mechanism for the sealing and cutting machine rotates the flipping shaft 12 forward via a vertical drive cylinder assembly. This causes the mounting ring 13 to fix the position of the sealing film by using internal hex bolts to drive the waste film clamping plate 14 and clamping rubber block 15. Excess sealing film is removed by the cutting assembly, and the sealing film is heated and sealed. After sealing, the flipping plate 22 is flipped by the flipping drive cylinder assembly, causing the transition support plate 23 to flip downwards. Simultaneously, the vertical drive cylinder assembly drives the flipping shaft 12 to rotate, causing the mounting ring 13 to move the waste film clamping plate... The front end of plate 14 continues to move downwards. When the waste film clamping plate 14 and the transition support plate 23 are flipped to the moving angle, the vertical drive cylinder assembly drives the flipping shaft 12 to rotate in the opposite direction. This causes the mounting ring 13 to separate from the waste film by the clamping rubber block 15 through the internal hex bolts and the waste film clamping plate 14. An external air pump then delivers gas to the threaded joint 18 via a connecting pipe, and the gas is blown out through the air blowing pipe 17, blowing the waste film on the transition support plate 23 into the external collection box. This achieves the goal of easily collecting discontinuous segments of waste film cut by the pre-sealing and cutting machine, avoiding the inability of the original film pulling mechanism and waste film winding mechanism to collect discontinuous segments of waste film.

[0026] Specifically, the limiting component includes a limiting slide sleeve 6 located on the rear side of the movable frame 4. A limiting slide rail 7 is slidably installed inside the limiting slide sleeve 6. The limiting slide rail 7 is fixedly installed inside the main mounting frame 1. The limiting slide sleeve 6 and the limiting slide rail 7 facilitate the limiting and guiding of the movable frame 4, preventing the movable frame 4 from shaking and causing errors in the cutting and sealing of the sealing film by the film cutting and sealing knife 5.

[0027] Specifically, a protective cover 24 is fixedly installed on the rear side of the main frame 1. The drive rack 10 and the clamping drive gear 11 are both located inside the protective cover 24. The protective cover 24 is a metal protective cover. The protective cover 24 is designed to protect the drive rack 10 and the clamping drive gear 11, preventing them from getting tangled in debris.

[0028] Specifically, the detection optoelectronic component includes a connector 25 disposed inside the main mounting frame 1, and a photoelectric sensor 26 is fixedly disposed inside the connector 25. The connection of the connector 25 and the photoelectric sensor 26 facilitates the detection of whether a packaging film requiring edge trimming and encapsulation has entered the transition support plate 23.

[0029] In use: Connect the air blowing pipe 17 to the external delivery pipe via the threaded connector 18, and connect the delivery pipe to the air pump. When the packaging film containing the internal items is positioned on both sides of the transition support plate 23, the vertical cylinder 9 in the vertical drive cylinder assembly drives the drive rack 10 to move upward. The drive rack 10 drives the clamping drive gear 11 to rotate forward, which in turn drives the flipping shaft 12 to rotate forward. The flipping shaft 12 then drives the mounting ring 13 to rotate. The mounting ring 13, via the hexagon socket bolt, flips the waste film clamping plate 14, causing its front end to move downward. The clamping plate 14 pushes the clamping rubber block 15 to contact the encapsulation film. The clamping rubber block 15, in conjunction with the transition support plate 23, fixes the position of the encapsulation film. The telescopic cylinder 3 inside the cutter assembly drives the output end to push the moving frame 4 downward. The moving frame 4 drives the limiting sleeve 6 inside the limiting assembly to move downward on the surface of the limiting slide rail 7, thereby causing the moving frame 4 to drive the film cutting and sealing blade 5 downward. The cutter inside the film cutting and sealing blade 5 removes excess encapsulation film, and the heating sealing plate inside the film cutting and sealing blade 5 heats and seals the encapsulation film. After sealing, the flipping cylinder 20 drives the output end to move downward. Connector 21 moves upward, and connector 21 drives the rear end of flip plate 22 to move upward via the rotating shaft, causing the top of flip plate 22 to flip forward. The flip plate 22, with its top flipped forward, drives the transition support plate 23 to flip downward. At the same time, the vertical cylinder 9 drives the output end to drive the drive rack 10 to move upward. The drive rack 10 drives the clamping drive gear 11 to rotate, and the clamping drive gear 11 drives the flip shaft 12 to rotate, causing the flip shaft 12 to drive the mounting ring 13. The mounting ring 13 drives the waste film clamping plate 14 to flip via the internal hex bolt, causing the front end of the waste film clamping plate 14 to continue to move downward. When the waste film clamping plate 14 and the transition support plate... When the 23 is flipped to the moving angle, the vertical cylinder 9 drives the output end to drive the drive rack 10 to move upward. The drive rack 10 drives the flipping shaft 12 to rotate in the opposite direction through the clamping drive gear 11. The flipping shaft 12 drives the mounting ring 13 to rotate in the opposite direction. The mounting ring 13 drives the waste film clamping plate 14 to rotate in the opposite direction through the internal hex bolt, so that the waste film clamping plate 14 drives the clamping rubber block 15 to separate from the waste film. The gas is delivered to the threaded joint 18 through the connecting pipe by the external air pump, and enters the air blowing pipe 17 through the threaded joint 18. The gas is blown out through the air blowing pipe 17, blowing the waste film on the transition support plate 23 into the external collection box.

[0030] In summary, the waste film clamping and flipping mechanism for the sealing and cutting machine uses a vertical drive cylinder assembly to rotate the flipping shaft 12 forward. This causes the mounting ring 13 to fix the position of the sealing film by using an internal hex bolt to drive the waste film clamping plate 14 and the clamping rubber block 15. The cutter assembly removes excess sealing film and heats and seals the edges of the sealing film. After sealing, the flipping drive cylinder assembly drives the flipping plate 22 to flip, causing the transition support plate 23 to flip downward. Simultaneously, the vertical drive cylinder assembly drives the flipping shaft 12 to rotate, causing the mounting ring 13 to move the front end of the waste film clamping plate 14 further downward. When the waste film clamping plate 14 and the transition support plate 23 have flipped to the desired angle, the vertical drive cylinder assembly drives the flipping mechanism to rotate. The shaft 12 rotates in the opposite direction, causing the mounting ring 13 to separate the clamping rubber block 15 from the waste film via the internal hex bolt and the waste film clamping plate 14. An external air pump delivers gas to the threaded joint 18 through the connecting pipe, and blows it out through the air blowing pipe 17, blowing the waste film on the transition support plate 23 into the external collection box. This achieves the goal of conveniently collecting the discontinuous segments of waste film cut by the front-end sealing and cutting machine, avoiding the situation where the original film pulling mechanism and waste film winding mechanism cannot collect discontinuous segments of waste film. It solves the problem that for higher-end products, a front-end sealing and cutting machine is required, but the waste film is discontinuous and the original film pulling mechanism and waste film winding mechanism cannot be used.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waste film clamping and flipping mechanism for a sealing and cutting machine, comprising a main mounting frame (1) and a film cutting support platform (2), characterized in that, The main mounting frame (1) is equipped with an upper cutting blade assembly for cutting the encapsulation film. A vertical drive cylinder assembly is provided on the rear side of the main mounting frame (1). A flipping shaft (12) is rotatably mounted inside the main mounting frame (1). The flipping shaft (12) is connected to the vertical drive cylinder assembly. An mounting ring (13) is fixedly mounted on the surface of the flipping shaft (12). A waste film clamping plate (14) is mounted on the left side of the mounting ring (13) by an internal hex bolt. The bottom of the waste film clamping plate (14) is fixedly mounted on a clamping rubber block (15). A mounting seat (16) is fixedly mounted on the right side of the waste film clamping plate (14). An air blowing pipe (17) is fixedly mounted inside the mounting seat (16). A threaded connector (18) is fixedly mounted on the rear side of the air blowing pipe (17). A flipping drive cylinder assembly is provided on the rear side of the main mounting frame (1). A flipping plate (22) is rotatably mounted on the surface of the flipping shaft (12). The flipping plate (22) is connected to the flipping drive cylinder. On the assembly, a transition support plate (23) is fixedly provided on the top of the flip plate (22), a detection photoelectric component is provided inside the mounting main frame (1), the vertical drive cylinder assembly includes a tail fixing pin (8) provided inside the mounting main frame (1), a vertical cylinder (9) is fixedly provided on the surface of the tail fixing pin (8), a drive rack (10) is fixedly provided at the output end of the vertical cylinder (9), a clamping drive gear (11) is meshed on the front side of the drive rack (10), the clamping drive gear (11) is fixedly installed on the surface of the flip shaft (12), the flip drive cylinder assembly includes a tail rotating pin (19) provided inside the mounting main frame (1), a flip cylinder (20) is rotatably provided on the surface of the tail rotating pin (19), a connector (21) is fixedly provided at the output end of the flip cylinder (20), the connector (21) is connected to the flip plate (22) through a rotating shaft, and the connector (21) is rotatably connected to the rotating shaft.

2. The waste film clamping and flipping mechanism for a sealing and cutting machine according to claim 1, characterized in that, The upper cutting blade assembly includes a telescopic cylinder (3) disposed on the top of the main frame (1), a movable frame (4) is fixedly disposed at the output end of the telescopic cylinder (3), a film cutting and sealing blade (5) is fixedly disposed on the front side of the movable frame (4), and a limit component is disposed on the rear side of the movable frame (4).

3. A waste film clamping and flipping mechanism for a sealing and cutting machine according to claim 2, characterized in that, The limiting component includes a limiting slide sleeve (6) disposed on the rear side of the movable frame (4), and a limiting slide rail (7) is slidably disposed inside the limiting slide sleeve (6), and the limiting slide rail (7) is fixedly installed inside the main frame (1).

4. A waste film clamping and flipping mechanism for a sealing and cutting machine according to claim 1, characterized in that, A protective cover (24) is fixedly installed on the rear side of the main mounting frame (1). The drive rack (10) and the clamping drive gear (11) are both located inside the protective cover (24). The protective cover (24) is a metal protective cover.

5. A waste film clamping and flipping mechanism for a sealing and cutting machine according to claim 1, characterized in that, The detection photoelectric component includes a connector (25) disposed inside the main mounting frame (1), and a photoelectric sensor (26) is fixedly disposed inside the connector (25).

6. A waste film clamping and flipping mechanism for a sealing and cutting machine according to claim 1, characterized in that, The number of waste film clamping plates (14) is two, and the two waste film clamping plates (14) are symmetrically distributed. The waste film clamping plates (14) are provided with connecting rings for connecting with the mounting ring (13). The waste film clamping plates (14) are made of metal.