A device for recovering edge material for producing stretch film

Abstract

The present invention discloses a device for recovering edge materials used in the production of stretch film, including a material receiving box, a processing box, a feeding roller and a crushing roller, wherein a rotary disc is rotatably connected in the processing box, two winding rollers are arranged through the rotary disc, and a traction component is arranged in the processing box; an air cylinder is arranged in the winding roller, a plug disc fixed to a slide rod is slidably embedded in the air cylinder, and air holes are formed on the side wall of the winding roller; a baffle is slidably connected to the rotary disc, and a guide structure is arranged on the processing box. In the present invention, the rotary disc is controlled to rotate by starting the first driving member, so that the edge materials of the stretch film rotate with the winding roller to a position close to the crushing roller, and as the winding roller pulls out the rotary disc, the rolled stretch film will fall onto the crushing roller. The recovery device can effectively reduce the running time of the motor by intermittently starting the crushing roller, thereby facilitating reducing the running energy consumption of the equipment and achieving the purpose of facilitating the staff to control the maintenance and use costs of the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of stretch film production equipment, and in particular to a side material recovery device for stretch film production. Background Art

[0002] Stretch film, also known as stretch film or heat shrink film, is a commonly used packaging material, mainly made of polyethylene (PE) resin, with good tensile properties, strength and tear resistance, which can effectively protect and fix the packaged items and increase transportation safety.

[0003] The recycling of stretch film scraps is an important part of the stretch film production process, which not only helps to reduce production costs, but also reduces environmental pollution. In the prior art, the cut scraps are sent to the recycling device, and after the stretch film passes through two rotating shredder rollers, the scraps are shredded and reused, thereby reducing the waste of raw materials. However, the cut scraps of stretch film are usually a thin single-layer structure, and the motor responsible for the rotation of the shredder roller usually needs to provide a large output torque for the shredder roller. Therefore, when a large-power motor is used to drive the shredder roller to rotate continuously to be responsible for the shredding of the thin stretch film, there is a problem that the equipment has a large energy consumption, which is not conducive to energy conservation and emission reduction, and it is not conducive to the staff to control the equipment maintenance and use costs.

[0004] In view of the above-mentioned defects, a device for recovering edge material for producing stretch film is provided. Summary of the invention

[0005] The purpose of the present invention is to solve the above-mentioned problem and to provide a device for recovering edge material for producing stretch film.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a device for recovering edge materials for the production of stretch film, comprising a material receiving box, a processing box installed on the material receiving box, and a feeding roller and a crushing roller installed in the processing box, wherein a rotary disk is rotatably connected in the processing box, a first driving member for driving the rotary disk to rotate is arranged on the processing box, two winding rollers are arranged through the rotary disk, a second driving member for driving the winding roller to rotate is arranged on the material receiving box, a sliding rod is slidably connected in the winding roller, and a traction member for driving the two sliding rods to move synchronously in opposite directions is arranged in the processing box;

[0007] The winding roller is provided with an air cylinder, one end of which is fixed to the inner wall of the winding roller, and the other end forms a gap with the inner wall of the winding roller to match the gas flow, a plug disc fixed to the slide rod is slidably embedded in the air cylinder, a tension spring is fixed between the plug disc and the winding roller, and an air hole is formed on the side wall of the winding roller;

[0008] A baffle is slidably connected to the turntable, and a guide structure is provided on the processing box. When the baffle rotates downward with the turntable, the baffle slides under the action of the guide structure to release the restriction on the winding roller. When the baffle rotates upward with the turntable, the baffle slides under the action of the guide structure to resist the outer side of the winding roller.

[0009] Preferably, the first driving member includes a U-shaped frame that passes through and is fixed in the turntable, the interior of the processing box is rotatably connected to a first gear that is coaxially fixed to the U-shaped frame, the processing box is rotatably connected to a second gear that meshes with the first gear, and a servo motor that controls the rotation of the second gear is installed at the outer end of the processing box.

[0010] Preferably, the second driving member includes a first magnetic shaft fixed to the end of the winding roller away from the turntable, the inner side of the processing box is rotatably connected to a second magnetic shaft that repel each other with the same poles as the first magnetic shaft, and the outer end of the processing box is equipped with a driving motor that controls the rotation of the second magnetic shaft.

[0011] Preferably, the traction component includes a swing arm rotatably connected to the U-shaped frame, and a component for controlling the rotation of the swing arm. A sliding arm with two corresponding sliding rods is slidably connected in the swing arm, and one end of the sliding rod located on the outside of the winding roller is fixed with a bracket rotatably connected to the sliding arm.

[0012] Preferably, the component for controlling the rotation of the swing arm includes two wheels rotatably connected to the outside of the U-shaped frame, and a coupling for controlling the rotation of the wheels, wherein one of the wheels is coaxially fixed to the swing arm, and the outer engaging sleeves of the two wheels are provided with chains.

[0013] Preferably, the assembly for controlling the rotation of the wheel disc comprises a sliding frame slidably connected to a U-shaped frame, a telescopic cylinder for controlling the movement of the sliding frame is installed at the outer end of the processing box, a side protrusion is fixed to the side end of the sliding frame, the side protrusion is fixed to the unidirectional moving side of the chain, and a sliding groove is formed in the U-shaped frame for matching the side protrusion to slide through.

[0014] Preferably, the guide structure comprises a round block fixed on the inner end of the baffle, and the outside of the processing box is formed with an inner ring groove and an outer ring groove for matching the sliding of the round block, and both ends of the inner ring groove and the outer ring groove are connected with straight grooves.

[0015] Preferably, a groove is formed on the outside of the rotating disk to fit the baffle plate for sliding, and a convex edge is formed on the side wall of the baffle plate to limit its outward separation from the groove.

[0016] Preferably, a counterweight is fixedly provided at the outer end of the baffle.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0018] 1. In the present application, the first driving member is started to control the rotation of the turntable, so that the edge material of the winding film with a certain thickness is rotated with the winding roller to a position close to the crushing roller. As the winding roller is pulled out of the turntable, the rolled winding film will fall onto the crushing roller, and the rolled winding film will be shredded in a short time. The recycling device can effectively reduce the running time of the motor with higher running power by intermittently starting the crushing roller, thereby helping to reduce the running energy consumption of the equipment and achieving the purpose of facilitating the staff to control the maintenance and use costs of the equipment.

[0019] 2. In the present application, when the winding roller rotates with the turntable toward the crushing roller, the gas in the gas cylinder acts on the wrapping film outward through the air holes, thereby facilitating the loosening of the wrapping film edge material adhering to the outer surface of the winding roller. When the winding roller close to the feed roller rotates under the action of the second driving member, the sliding rod is controlled by the traction member to slide and extend along the winding roller, so that the external air is sucked into the interior of the winding roller along the air holes, which is beneficial to the adsorption and winding of the wrapping film by the winding roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A front perspective schematic diagram of a recovery device provided according to an embodiment of the present invention is shown;

[0021] Figure 2 A rear perspective schematic diagram of a recovery device provided according to an embodiment of the present invention is shown;

[0022] Figure 3 A schematic diagram of the front cross-section structure of a processing box provided in an embodiment of the present invention is shown;

[0023] Figure 4 A schematic diagram of a side cross-sectional structure of a processing box provided according to an embodiment of the present invention is shown;

[0024] Figure 5 A cross-sectional schematic diagram of a winding roller provided according to an embodiment of the present invention is shown;

[0025] Figure 6 A schematic diagram of the matching structure of a sliding frame and a U-shaped frame provided according to an embodiment of the present invention is shown.

[0026] Legend:

[0027] 1. Material receiving box; 2. Processing box; 3. Rewinding roller; 301. Air hole; 4. First magnetic axis; 5. Air cylinder; 6. Plug disk; 7. Tension spring; 8. Slide rod; 9. Bracket; 10. U-shaped frame; 11. First gear; 12. Second gear; 13. Servo motor; 14. Sliding frame; 15. Telescopic cylinder; 16. Swing arm; 17. Slide arm; 18. Wheel; 19. Chain; 20. Side protrusion; 2001. Slide groove; 21. Turntable; 22. Groove; 23. Baffle; 24. Counterweight; 25. Round block; 26. Inner ring groove; 27. Outer ring groove; 28. Linear groove; 29. ​​Second magnetic axis; 30. Driving motor; 31. Feed roller; 32. Crushing roller. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-Figure 6 The present invention provides a technical solution: a device for recovering edge materials for producing stretch film, comprising a material receiving box 1, a processing box 2 installed on the material receiving box 1, and a feeding roller 31 and a crushing roller 32 installed in the processing box 2, a turntable 21 is rotatably connected in the processing box 2, a first driving member for driving the turntable 21 to rotate is arranged on the processing box 2, two winding rollers 3 are penetrated in the turntable 21, a second driving member for driving the winding roller 3 to rotate is arranged on the material receiving box 1, a sliding rod 8 is slidably connected in the winding roller 3, and a traction member for driving the two sliding rods 8 to move synchronously in opposite directions is arranged in the processing box 2.

[0030] The feed roller 31 is controlled by a motor to rotate, and is used to guide the edge of the wrapping film from a fixed position into the processing box 2, so as to facilitate the centralized winding of the winding roller 3 located on one side of the wrapping film. The winding roller 3 near the feed roller 31 is controlled by a second driving member to rotate, so as to realize the centralized winding of the edge of the wrapping film.

[0031] After the winding roller 3 at the upper position winds up the edge material of the wrapping film of a certain thickness, the first driving member is started to control the rotation of the rotary disc 21, so that the winding film of a certain thickness rotates with the winding roller 3 to a position close to the crushing roller 32. As the winding roller 3 is pulled out of the rotary disc 21, the rolled winding film will fall on the crushing roller 32, and the motor is started to control the rotation of the crushing roller 32, so that the rolled winding film is centrally crushed in a short time. The recycling device can effectively reduce the running time of the motor with a large running power by intermittently starting the crushing roller 32, thereby helping to reduce the running energy consumption of the equipment and achieving the purpose of facilitating the staff to control the maintenance and use costs of the equipment. At the same time, after the edge material is rolled up to a certain thickness by the winding roller 3, it is sent to the crushing roller 32 in a relatively regular state (compared with the messy and fluffy winding film accumulated on the upper side of the crushing roller 32), which is conducive to the rotating crushing roller 32 to complete the crushing and recycling of the edge material of the wrapping film in a short time, thereby helping to improve the recycling efficiency of the device for the edge material.

[0032] By controlling the rotation of the turntable 21, the two winding rollers 3 are used to alternately wind up the stretch film edge materials. When one of the winding rollers 3 drives the stretch film wound on its surface to move toward the shredding roller 32, the other winding roller 3 rotates toward the feeding roller 31, thereby satisfying the continuous winding operation of continuously conveying the stretch film edge materials to the processing box 2 through the feeding roller 31, which is beneficial to ensuring the recycling and processing efficiency of the stretch film edge materials by the device.

[0033] An air cylinder 5 is provided in the winding roller 3, one end of the air cylinder 5 is fixed to the inner wall of the winding roller 3, and the other end forms a gap with the inner wall of the winding roller 3 to cooperate with the flow of gas. A plug disc 6 fixed to a slide rod 8 is slidably embedded in the air cylinder 5, a tension spring 7 is fixed between the plug disc 6 and the winding roller 3, and an air hole 301 is formed on the side wall of the winding roller 3.

[0034] When the winding roller 3 rotates with the rotary disk 21 and approaches the crushing roller 32, as the winding roller 3 rotates into place, the winding roller 3 will slide outward along the rotary disk 21 under the elastic force of the tension spring 7 and be pulled out. At this time, the plug disk 6 will be pushed along the air cylinder 5 toward the open end of the air cylinder 5, so that the gas in the air cylinder 5 acts on the wrapping film outward through the air hole 301, thereby facilitating the loosening of the wrapping film edge material adhered to the outer surface of the winding roller 3. As the winding roller 3 slides outward relative to the rotary disk 21, the wrapping film edge material detaches from the outer surface of the winding roller 3 under the resistance of the air blowing and the inner wall of the rotary disk 21.

[0035] When the winding roller 3 on the side close to the feed roller 31 rotates under the action of the second driving member, the sliding rod 8 located inside the feed roller 31 is controlled by the traction component to slide out along the winding roller 3. At this time, the plug disc 6 slides along the air cylinder 5, so that the external air is sucked into the winding roller 3 along the air hole 301, and then the edge of the wrapping film sent into the processing box 2 by the feed roller 31 is driven to be sucked to the outside of the winding roller 3, which is beneficial to the adsorption and winding of the wrapping film by the winding roller 3.

[0036] During this process, another slide bar 8 will push the winding roller 3 under the action of the traction component, so that the winding roller 3 close to the side of the shredding roller 32 will re-extend toward the inner side of the turntable 21. When the turntable 21 rotates again, the winding roller 3 extending inwardly into the turntable 21 will move toward the feed roller 31 again to meet the continued winding of the wrapping film edge material.

[0037] A baffle 23 is slidably connected to the turntable 21, and a guide structure is provided on the processing box 2. When the baffle 23 rotates downward with the turntable 21, the baffle 23 slides under the action of the guide structure to release the restriction on the winding roller 3. When the baffle 23 rotates upward with the turntable 21, the baffle 23 slides under the action of the guide structure to resist the outer side of the winding roller 3.

[0038] When the winding roller 3 is in a position close to the feeding roller 31 as the turntable 21 rotates, the baffle 23 corresponding to the winding roller 3 will move downward under the action of gravity and block the outside of the winding roller 3. When the slide bar 8 pulls the winding roller 3 outward, the winding roller 3 will maintain an unchanged lateral position relative to the turntable 21 under the action of the baffle 23, so as to avoid the winding roller 3 from moving synchronously with the slide bar 8 under the action of the tension spring 7.

[0039] When the winding roller 3 is in a position close to the crushing roller 32 as the turntable 21 rotates, the baffle 23 corresponding to the winding roller 3 will release the resistance to the outer side of the winding roller 3 downward under the action of gravity. At this time, the winding roller 3 will slide along the slide rod 8 and extend out of the turntable 21 under the tension of the tension spring 7, so as to facilitate the detachment of the edge of the winding film attached to its outer side.

[0040] Specifically, Figure 1 , Figure 3 and Figure 4 As shown, the first driving member includes a U-shaped frame 10 which passes through and is fixed in the turntable 21, a first gear 11 which is coaxially fixed to the U-shaped frame 10 and is rotatably connected inside the processing box 2, a second gear 12 which is rotatably connected in the processing box 2 and is meshed with the first gear 11, and a servo motor 13 which controls the rotation of the second gear 12 is installed at the outer end of the processing box 2.

[0041] The servo motor 13 is a prior art, and is an automatic control motor, and its main function is to convert the input voltage control signal into an angular displacement or angular velocity on the shaft to drive the control object. The servo motor 13 is started to control the second gear 12 to rotate, and then the first gear 11 meshing with the second gear 12 drives the U-shaped frame 10 to rotate, and at this time, the rotating disk 21 fixed to the U-shaped frame 10 will rotate to switch the positions of the two winding rollers 3.

[0042] Specifically, Figure 1 , Figure 3 and Figure 4 As shown, the second driving member includes a first magnetic shaft 4 fixed to the end of the winding roller 3 away from the turntable 21, and the inner side of the processing box 2 is rotatably connected to a second magnetic shaft 29 that repel each other with the same poles as the first magnetic shaft 4, and the outer end of the processing box 2 is installed with a driving motor 30 that controls the rotation of the second magnetic shaft 29.

[0043] The principle of transmission cooperation between the first magnetic shaft 4 and the second magnetic shaft 29 is similar to the principle of existing magnetic couplings, which is mainly based on the interaction between magnetic poles. When the inner and outer magnetic poles repel each other, the drive motor 30 is started to control the rotation of the second magnetic shaft 29, so that the first magnetic shaft 4 transmits torque and motion without directly contacting the second magnetic shaft 29. It has the characteristics of contactless kinetic energy transmission and high-efficiency kinetic energy transmission, which is conducive to the rapid transmission of the winding roller 3 that has completed the switching.

[0044] Specifically, Figure 1-Figure 6 As shown, the traction component includes a swing arm 16 rotatably connected to the U-shaped frame 10, and a component for controlling the rotation of the swing arm 16. A sliding arm 17 with two corresponding sliding rods 8 is slidably connected in the swing arm 16. The end of the sliding rod 8 located on the outer side of the winding roller 3 is fixed with a bracket 9 rotatably connected to the sliding arm 17.

[0045] By controlling the rotation of the swing arm 16, the support 9 drives the slide bar 8 to slide relative to the rotary disk 21 under the action of the slide arm 17. In this process, as the distance between the support 9 and the rotating axis of the swing arm 16 changes, the slide arm 17 will slide along the swing arm 16 to extend or shorten.

[0046] The assembly for controlling the rotation of the swing arm 16 includes two wheels 18 rotatably connected to the outside of the U-shaped frame 10, and a fitting for controlling the rotation of the wheels 18, wherein one wheel 18 is coaxially fixed to the swing arm 16, and a chain 19 is provided on the outer engagement sleeves of the two wheels 18. The wheel 18 is a toothed disc structure engaged with the chain 19.

[0047] The components for controlling the rotation of the wheel 18 include a sliding frame 14 slidably connected to the U-shaped frame 10. A telescopic cylinder 15 for controlling the movement of the sliding frame 14 is installed at the outer end of the processing box 2. A side protrusion 20 is fixed to the side end of the sliding frame 14. The side protrusion 20 is fixed to the unidirectional moving side of the chain 19. A sliding groove 2001 is formed in the U-shaped frame 10 to fit the side protrusion 20 and slide through it. The telescopic cylinder 15 is a prior art that uses the change of air pressure to drive the piston to perform telescopic movement.

[0048] When the sliding frame 14 slides along the inner side of the U-shaped frame 10 under the action of the telescopic cylinder 15, the side protrusion 20 fixed on the side end of the sliding frame 14 will pull one side of the chain 19 to move. At this time, the two wheel discs 18 will rotate synchronously under the action of the chain 19, and the swing arm 16 coaxially fixed with the wheel disc 18 will rotate accordingly.

[0049] Specifically, Figure 2 and Figure 4 As shown, the guide structure includes a round block 25 fixed on the inner end of the baffle 23, and the outside of the processing box 2 is formed with an inner ring groove 26 and an outer ring groove 27 for sliding with the round block 25, and the inner and outer ring grooves 26 and 27 are connected at both ends with straight grooves 28.

[0050] The outer annular groove 27 and the inner annular groove 26 are both semi-annular grooves, and the two linear grooves 28 are both vertical grooves. When the winding roller 3 approaches the crushing roller 32 as the rotary disk 21 rotates, the round block 25 fixed on the baffle 23 will slide along the inner annular groove 26. During this process, the baffle 23 maintains abutment against the winding roller 3, restricting the winding roller 3 from being pulled out of the rotary disk 21, until the winding roller 3 rotates downward to the right position, the baffle 23 will slide downward under the action of gravity, releasing the abutment against the winding roller 3, and the round block 25 fixed on the baffle 23 will slide from the inner annular groove 26 to the outer annular groove 27 along the linear groove 28.

[0051] When the winding roller 3 approaches the feeding roller 31 as the turntable 21 rotates, the round block 25 fixed on the baffle 23 will slide along the outer ring groove 27 until the winding roller 3 rotates upward to the right position. The baffle 23 will slide downward under the action of gravity to block the outer end of the winding roller 3, thereby limiting the subsequent movement of the winding roller 3 with the slide rod 8 and extending out of the turntable 21.

[0052] The outer portion of the rotary disc 21 is formed with a groove 22 for slidingly embedding the baffle plate 23 . The side wall of the baffle plate 23 is formed with a convex edge for limiting its outward separation from the groove 22 . A counterweight block 24 is fixedly disposed at the outer end of the baffle plate 23 .

[0053] The convex edge allows the baffle 23 to effectively limit the outward movement of the winding roller 3 relative to the rotary disc 21 when it abuts against the outer end of the winding roller 3. The weight of the baffle 23 is increased by the counterweight block 24, which is conducive to automatically releasing or satisfying the resistance restriction on the winding roller 3 under the action of gravity.

[0054] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for recovering edge material for producing stretch film, comprising a material receiving box (1), a processing box (2) installed on the material receiving box (1), and a feeding roller (31) and a crushing roller (32) installed in the processing box (2), characterized in that: The processing box (2) is rotatably connected to a rotary disk (21), the processing box (2) is provided with a first driving member for driving the rotary disk (21) to rotate, the rotary disk (21) is provided with two winding rollers (3) running through it, the receiving box (1) is provided with a second driving member for driving the winding roller (3) to rotate, the winding roller (3) is slidably connected to a sliding rod (8), and the processing box (2) is provided with a traction member for driving the two sliding rods (8) to move synchronously in opposite directions; The winding roller (3) is provided with an air cylinder (5), one end of the air cylinder (5) is fixed to the inner wall of the winding roller (3), and the other end forms a gap with the inner wall of the winding roller (3) to facilitate gas flow, a plug disc (6) fixed to a slide rod (8) is slidably embedded in the air cylinder (5), a tension spring (7) is fixed between the plug disc (6) and the winding roller (3), and an air hole (301) is formed on the side wall of the winding roller (3); A baffle (23) is slidably connected to the rotary disk (21), and a guide structure is provided on the processing box (2). When the baffle (23) rotates downward with the rotary disk (21), the baffle (23) slides under the action of the guide structure to release the restriction on the winding roller (3); when the baffle (23) rotates upward with the rotary disk (21), the baffle (23) slides under the action of the guide structure to abut against the outer side of the winding roller (3); When the winding roller (3) rotates with the rotary disk (21) toward the crushing roller (32), as the winding roller (3) rotates into place, the winding roller (3) will slide outward along the rotary disk (21) under the elastic force of the tension spring (7), and at this time, the plug disc (6) will be pushed along the air cylinder (5) toward the open end of the air cylinder (5), so that the gas in the air cylinder (5) acts on the wrapping film outward through the air hole (301). As the winding roller (3) slides outward relative to the rotary disk (21), the edge of the wrapping film is separated from the outer surface of the winding roller (3) under the action of air blowing and the resistance of the inner wall of the rotary disk (21).

2. A device for recovering edge material for producing stretch film according to claim 1, characterized in that: The first driving member comprises a U-shaped frame (10) which passes through and is fixed in the rotating disk (21); a first gear (11) which is coaxially fixed to the U-shaped frame (10) is rotatably connected inside the processing box (2); a second gear (12) which meshes with the first gear (11) is rotatably connected in the processing box (2); and a servo motor (13) which controls the rotation of the second gear (12) is installed at the outer end of the processing box (2).

3. The device for recovering edge material for producing stretch film according to claim 1, characterized in that: The second driving member comprises a first magnetic shaft (4) fixed to an end of the winding roller (3) away from the rotating disk (21); a second magnetic shaft (29) which is rotatably connected to the inner side of the processing box (2) and which cooperates with the first magnetic shaft (4) to repel each other with the same poles; and a driving motor (30) for controlling the rotation of the second magnetic shaft (29) is installed at the outer end of the processing box (2).

4. The device for recovering edge material for producing stretch film according to claim 1, characterized in that: The traction component comprises a swing arm (16) rotatably connected to the U-shaped frame (10), and a component for controlling the rotation of the swing arm (16); two sliding arms (17) corresponding to the sliding rods (8) are slidably connected to the swing arm (16); and a bracket (9) rotatably connected to the sliding arm (17) is fixed at one end of the sliding rod (8) located outside the winding roller (3).

5. A device for recovering edge material for producing stretch film according to claim 4, characterized in that: The assembly for controlling the rotation of the swing arm (16) comprises two wheel discs (18) rotatably connected to the outside of the U-shaped frame (10), and a fitting for controlling the rotation of the wheel discs (18), wherein one of the wheel discs (18) is coaxially fixed to the swing arm (16), and the outer engaging sleeves of the two wheel discs (18) are provided with chains (19).

6. A device for recovering edge material for producing stretch film according to claim 5, characterized in that: The assembly for controlling the rotation of the wheel disc (18) comprises a sliding frame (14) slidably connected to the U-shaped frame (10); a telescopic cylinder (15) for controlling the movement of the sliding frame (14) is installed at the outer end of the processing box (2); a side protrusion (20) is fixedly provided at the side end of the sliding frame (14); the side protrusion (20) is fixed to the unidirectional moving side of the chain (19); and a sliding groove (2001) is formed in the U-shaped frame (10) for matching the side protrusion (20) to slide through.

7. The device for recovering edge material for producing stretch film according to claim 1, characterized in that: The guide structure comprises a round block (25) fixedly mounted on the inner end of the baffle (23); an inner ring groove (26) and an outer ring groove (27) for slidingly cooperating with the round block (25) are formed on the outside of the processing box (2); both ends of the inner ring groove (26) and the outer ring groove (27) are connected by a straight line groove (28).

8. The device for recovering edge material for producing stretch film according to claim 7, characterized in that: The rotating disk (21) is provided with a groove (22) on the outside thereof for slidingly embedding the baffle plate (23), and the side wall of the baffle plate (23) is provided with a convex edge for limiting its outward separation from the groove (22).

9. The device for recovering edge material for producing stretch film according to claim 7, characterized in that: A counterweight block (24) is fixedly disposed at the outer end of the baffle (23).

Images