Degradable PE film cutting auxiliary device

Abstract

The utility model provides a degradable PE film cutting auxiliary device and relates to the technical field of film cutting, the degradable PE film cutting auxiliary device comprises a supporting frame, a cutting plate and an electric push rod, arc-shaped arms are arranged in the two ends of the supporting frame, a ball head is integrally formed at one end of each arc-shaped arm, and the arc-shaped arms are sleeved with springs; a supporting shaft roller is arranged on the side, away from the supporting frame, of the cutting plate, the supporting shaft roller is sleeved with a rolling roller sleeve, and bases are arranged at the two ends of the supporting shaft roller correspondingly. According to the technical scheme, an electric push rod is used for controlling a cutting plate to move towards the surface of a rolling roller sleeve, when a film on the surface of the rolling roller sleeve is pressed, the cutting plate pushes the rolling roller sleeve to rotate outside a supporting shaft roller, the cutting plate keeps the state of continuously inclining towards the bottom, a spring is pressed on the surface of a supporting frame through a ball head, and after the film is cut off, the cutting plate is driven to rotate. And the fracture of the film can be located at the bottom of the cutting plate, so that the end of the film can be pulled out conveniently, and the winding work of the degradable PE film can be continued.

Description

Technical Field

[0001] This utility model relates to the field of film cutting technology, specifically a biodegradable PE film cutting auxiliary device. Background Technology

[0002] PE film, or polyethylene film, refers to film produced from PE granules. PE film is moisture-proof and has low moisture permeability. Depending on the manufacturing method and control measures, polyethylene film (PE) can be used to produce products with different properties, such as low-density, medium-density, high-density polyethylene, and cross-linked polyethylene.

[0003] Biodegradable PE films possess the functions and properties of traditional plastics, and after reaching their lifespan, they can degrade naturally in the environment through the action of microorganisms in soil and water or through the action of ultraviolet rays in sunlight, ultimately returning to the ecosystem in a reduced form. Domestically developed varieties cover photodegradable, photobiodegradable, photooxidative biodegradable, high-starch-content biodegradable, high-calcium carbonate-filled photooxidative biodegradable, and fully biodegradable types. Among these, edible films and water-soluble films are the most commonly used.

[0004] In the production of biodegradable PE film, dried polyethylene particles are first added to the hopper. The particles, by their own weight, enter the screw. When the particles contact the inclined plane of the screw, the rotating inclined plane generates a thrust perpendicular to the inclined plane, pushing the plastic particles forward. During this movement, the plastic gradually melts due to friction between the plastic and the screw, between the plastic and the barrel, and collisions between particles, as well as external heating of the barrel. The molten plastic passes through a filter screen at the die head to remove impurities and exits from the die head. After being inflated and cooled by an air ring, it is pressed by a herringbone plate and wound into a cylinder by traction rollers. During the winding process, the PE film is also cut.

[0005] The patent document with announcement number CN221939709U describes a cutting device for PE film production. Through the setting of rollers and first guide rollers, the device can guide the film to the cutting point and flatten the film, thereby reducing errors during cutting.

[0006] However, in the process of implementing the above technical solution, the following technical problems were found:

[0007] The cutting device for PE film production guides the film to the cutting end through structures such as rollers and first guide rollers, which can make the cut more even. However, in actual application, the cut part of the film is stuck inside the knife groove and is not easy to be pulled out, which can easily affect the subsequent film winding work. Utility Model Content

[0008] To overcome the shortcomings of existing PE film cutting devices in practical applications, where the cut end of the film remains inside the cutter groove and is difficult to pull out, thus affecting subsequent film winding, this application provides a biodegradable PE film cutting auxiliary device. An electric push rod controls the cutting plate to move towards the surface of the rolling roller sleeve. When pressure is applied to the film on the surface of the rolling roller sleeve, the cutting plate pushes the rolling roller sleeve to rotate outside the support roller, while the cutting plate continues to tilt downwards. The ball head presses the spring against the surface of the support frame. After the film is cut, the electric push rod controls the cutting plate to reset. The ball head, supported by the spring, pushes the cutting plate to rotate around the limiting shaft around the top, ensuring the film cut end is located at the bottom of the cutting plate, facilitating the pulling out of the film end for continued biodegradable PE film winding.

[0009] The technical solution adopted by the embodiments of this application to solve its technical problem is:

[0010] A biodegradable PE film cutting aid includes a support frame, a cutting plate, and an electric push rod. The cutting plate is disposed inside the support frame, and the electric push rod is disposed between the support frame and the cutting plate.

[0011] The support frame has arc-shaped arms inside at both ends. One end of each arc-shaped arm has a ball head integrally formed. A spring is sleeved to the outside of the arc-shaped arm. The arc-shaped arm is adapted to the inside of the support frame. The cutting plate overlaps the top of the two ball heads and remains in an inclined state. The ball heads drive the arc-shaped arm to slide inside the support frame and compress the spring.

[0012] In one possible implementation, the cutting board has a storage slot in the middle of the side near the support frame, and the two ends of the electric push rod are respectively hinged to the surface of the support frame and the inner wall of the storage slot away from the support frame.

[0013] In one possible implementation, the support frame has a first strip groove inside both ends, and the cutting plate is integrally formed with a limiting shaft on the side near the support frame; the two ends of the limiting shaft slide inside the two first strip grooves respectively.

[0014] In one possible implementation, a support roller is provided on the side of the cutting plate away from the support frame, and a rolling roller sleeve is sleeved on the outside of the support roller. A base is provided at both ends of the support roller, and a substrate is assembled and connected to the surface of the two bases near the support frame. The two ends of the support frame are respectively assembled and fixed to the surface of the top of the substrate away from the base, so that the cutting plate cuts the biodegradable PE film on the surface of the rolling roller sleeve.

[0015] In one possible implementation, the outer surface of the rolling roller sleeve is machined with a plurality of strip-shaped grooves, which are equally spaced around the center of the rolling roller sleeve, and the cross-section of the plurality of strip-shaped grooves is an isosceles triangle.

[0016] In one possible implementation, a limiting rod is internally plugged into one end of the support shaft roller, and a limiting ring is externally interference-fitted to one end of the support shaft roller; the side of the limiting ring near the support shaft roller is adapted to be connected to the outside of the limiting rod, and the limiting rod restricts the position of the limiting ring outside the support shaft roller.

[0017] In one possible implementation, each of the two bases has a limiting post inside the side near the support shaft roller, and both ends of the support shaft roller are machined with limiting sleeves; the limiting sleeves are plugged into the interior of the base, the limiting sleeves are sleeved on the outside of the limiting post, and a torsion spring is provided between the inner wall of the limiting sleeve and the outer side of the limiting post.

[0018] In one possible implementation, the top of the limiting post is provided with a second strip groove, the top of the limiting sleeve is provided with a third strip groove, and the two ends of the torsion spring are respectively hooked into the interior of the second strip groove and the third strip groove.

[0019] The beneficial effects of this application are as follows:

[0020] Firstly, in this solution, the cutting plate is controlled by an electric push rod to move towards the surface of the rolling roller sleeve. When pressure is applied to the film on the surface of the rolling roller sleeve, the cutting plate pushes the rolling roller sleeve to rotate outside the support shaft roller, while the cutting plate continues to tilt towards the bottom. The ball head presses the spring against the surface of the support frame. After the film is cut, the electric push rod controls the cutting plate to reset. The ball head, supported by the spring, pushes the cutting plate to rotate around the limit shaft around the top, which can make the film break point located at the bottom of the cutting plate, making it easy to pull out the film end and continue the winding of the biodegradable PE film.

[0021] Secondly, in this solution, the cutting plate is controlled by an electric push rod to move towards the surface of the rolling roller sleeve. When pressure is applied to the film on the surface of the rolling roller sleeve, the cutting plate pushes the rolling roller sleeve to rotate outside the support shaft roller. The friction between the rolling roller sleeve and the support shaft roller can be used to drive the limiting sleeve to tighten the torsion spring between the limiting sleeve and the limiting post. This is beneficial for the cutting plate to cut the film at the surface of the rolling roller sleeve and prevents the rolling roller sleeve from rotating excessively outside the support shaft roller before the film is cut. Attached Figure Description

[0022] Figure 1 This is one of the overall structural schematic diagrams of this utility model;

[0023] Figure 2 This is the second schematic diagram of the overall structure of this utility model;

[0024] Figure 3 This utility model Figure 2 Enlarged diagram of section A in the middle;

[0025] Figure 4 This is a structural diagram of the base and the limiting sleeve of this utility model in the disengaged state.

[0026] Reference numerals in the attached drawings: 1. Base; 2. Base plate; 3. Limiting shaft; 4. Support frame; 5. Cutting plate; 6. First strip groove; 7. Rolling roller sleeve; 8. Strip groove opening; 9. Support shaft roller; 10. Limiting ring; 11. Electric push rod; 12. Receiving slot; 13. Ball head; 14. Arc arm; 15. Spring; 16. Limiting post; 17. Second strip groove; 18. Torsion spring; 19. Limiting sleeve; 20. Limiting rod; 21. Third strip groove. Detailed Implementation

[0027] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0028] Example 1:

[0029] This embodiment describes the specific structure of a biodegradable PE film cutting aid device, as detailed in the following reference. Figures 1-4 As shown, it includes a support frame 4, a cutting plate 5 disposed inside the support frame 4, and an electric push rod 11 disposed between the support frame 4 and the cutting plate 5. Both ends of the support frame 4 are provided with arc-shaped arms 14. One end of the arc-shaped arm 14 is integrally formed with a ball head 13, and the outside of the arc-shaped arm 14 is connected with a spring 15.

[0030] A support roller 9 is provided on the side of the cutting board 5 away from the support frame 4. A rolling roller sleeve 7 is sleeved on the outside of the support roller 9. A base 1 is provided at both ends of the support roller 9. A base plate 2 is assembled and connected to the surface of the two bases 1 near the support frame 4.

[0031] In this way, by assembling and fixing the two ends of the support frame 4 to the surface of the top of the substrate 2 away from the base 1, when the electric push rod 11 controls the cutting plate 5 to move toward the rolling roller sleeve 7, the cutting plate 5 can cut the biodegradable PE film on the surface of the rolling roller sleeve 7.

[0032] Secondly, to facilitate fixing the electric push rod 11 between the cutting board 5 and the support frame 4, such as... Figure 1 and Figure 2 As shown, a storage slot 12 is provided in the middle of the side of the cutting plate 5 near the support frame 4. By hinged to the two ends of the electric push rod 11 to the surface of the support frame 4 and the inner wall of the storage slot 12 away from the support frame 4 respectively, the cutting plate 5 can cut the film on the surface of the rolling roller sleeve 7.

[0033] Meanwhile, the arc arm 14 is adapted to be connected to the inside of the support frame 4, and the cutting plate 5 overlaps the top of the two ball heads 13 and remains in an inclined state. When the electric push rod 11 controls the cutting plate 5 to move towards the surface of the rolling roller sleeve 7, the ball heads 13 can drive the arc arm 14 to slide inside the support frame 4 and compress the spring 15, so that the cutting plate 5 tilts at a larger angle, so that the film is cut at a lower point. When the cutting work is completed, the cut of the film can be lower than one end of the cutting plate 5.

[0034] Furthermore, in order to allow the cutting board 5 to adapt to its movement and tilting towards the surface of the rolling roller sleeve 7 under the control of the electric push rod 11, such as Figure 1 and Figure 2 As shown, the support frame 4 has a first strip groove 6 inside both ends. The cutting plate 5 is integrally formed with a limiting shaft 3 on the side close to the support frame 4. By making the two ends of the limiting shaft 3 slide inside the two first strip grooves 6 respectively, the distance of the cutting plate 5 moving towards the rolling roller sleeve 7 can be controlled, and the tilting action of the cutting plate 5 can be adapted.

[0035] In some examples, the outer surface of the rolling roller sleeve 7 is machined with multiple strip grooves 8; the multiple strip grooves 8 are equally spaced around the center of the rolling roller sleeve 7, and the cross-section of the multiple strip grooves 8 is an isosceles triangle.

[0036] The above design features a cutting plate 5 controlled by an electric push rod 11 on one side of the rolling roller sleeve 7. An arc-shaped arm 14, supported at the bottom of the cutting plate 5, has a spring 15 sleeved on its outer side and a ball head 13 machined at one end. When the electric push rod 11 controls the cutting plate 5 to move towards the surface of the rolling roller sleeve 7, applying pressure to the film on the surface of the rolling roller sleeve 7, the cutting plate 5 pushes the rolling roller sleeve 7 to rotate outside the support shaft roller 9. The cutting plate 5 remains tilted towards the bottom, and the ball head 13 presses the spring 15 against the surface of the support frame 4 (the arc-shaped arm 14 slides inside the support frame 4). After the film is cut, the electric push rod 11 controls the cutting plate 5 to reset. The ball head 13, supported by the spring 15, pushes the cutting plate 5 to rotate around the limiting shaft 3 around the top, allowing the film break to be located at the bottom of the cutting plate 5, facilitating the removal of the film end.

[0037] Example 2:

[0038] Based on Example 1, such as Figure 4 As shown in the figure, this embodiment introduces the specific structure of the support shaft roller 9. One end of the support shaft roller 9 is internally connected to a limit rod 20, and the other end of the support shaft roller 9 is externally fitted with a limit ring 10.

[0039] Both bases 1 have limit posts 16 installed inside the side near the support shaft roller 9. Limit sleeves 19 are machined at both ends of the support shaft roller 9. The limit sleeves 19 are plugged into the interior of the base 1 and fitted onto the outer side of the limit posts 16. A torsion spring 18 is installed between the inner wall of the limit sleeve 19 and the outer side of the limit post 16.

[0040] The limiting ring 10 is adapted to be connected to the outside of the limiting rod 20 on the side near the support shaft roller 9. The limiting rod 20 restricts the position of the limiting ring 10 outside the support shaft roller 9, which can prevent the rolling roller sleeve 7 from being clamped after being installed outside the support shaft roller 9, thus affecting the normal rotation of the rolling roller sleeve 7 during the film traction process.

[0041] Secondly, a second groove 17 is provided on the top of the limiting post 16, and a third groove 21 is provided on the top of the limiting sleeve 19. By hooking the two ends of the torsion spring 18 into the interior of the second groove 17 and the third groove 21 respectively, the large-angle rotation of the support shaft roller 9 between the two bases 1 can be restricted. When the electric push rod 11 controls the cutting plate 5 to move toward the surface of the rolling roller sleeve 7 and applies pressure to the film on the surface of the rolling roller sleeve 7, the cutting plate 5 pushes the rolling roller sleeve 7 to rotate outside the support shaft roller 9. With the help of the friction between the rolling roller sleeve 7 and the support shaft roller 9, the support shaft roller 9 drives the limiting sleeve 19 to tighten the torsion spring 18 between the limiting sleeve 19 and the limiting post 16, and the auxiliary film is cut.

[0042] The above design connects the two ends of the support roller 9 to the limiting posts 16 inside the base 1 using limiting sleeves 19, and sets a torsion spring 18 between the outside of the limiting post 16 and the inside of the limiting sleeve 19. When the electric push rod 11 controls the cutting plate 5 to move toward the surface of the rolling roller sleeve 7 and applies pressure to the film on the surface of the rolling roller sleeve 7, the cutting plate 5 pushes the rolling roller sleeve 7 to rotate outside the support roller 9. The friction between the rolling roller sleeve 7 and the support roller 9 can be used to make the support roller 9 drive the limiting sleeve 19 to tighten the torsion spring 18 between the limiting sleeve 19 and the limiting post 16. This is beneficial for the cutting plate 5 to cut the film at the surface of the rolling roller sleeve 7 and prevents the rolling roller sleeve 7 from rotating excessively outside the support roller 9 when the film is not cut.

[0043] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A biodegradable PE film cutting aid device, characterized in that, include: Support frame (4); A cutting board (5) is located inside the support frame (4); An electric push rod (11) is disposed between the support frame (4) and the cutting board (5); The support frame (4) has arc-shaped arms (14) inside both ends. One end of the arc-shaped arm (14) is integrally formed with a ball head (13), and the outside of the arc-shaped arm (14) is connected with a spring (15). The arc arm (14) is adapted to be connected to the inside of the support frame (4), the cutting plate (5) overlaps the top of the two ball heads (13) and remains in an inclined state, the ball heads (13) drive the arc arm (14) to slide inside the support frame (4) and compress the spring (15).

2. The biodegradable PE film cutting aid device as described in claim 1, characterized in that: The cutting board (5) has a storage slot (12) in the middle of the side near the support frame (4). The two ends of the electric push rod (11) are respectively hinged to the surface of the support frame (4) and the inner wall of the storage slot (12) away from the support frame (4).

3. The biodegradable PE film cutting aid device as described in claim 1, characterized in that: The support frame (4) has a first strip groove (6) inside both ends, and the cutting plate (5) has a limit shaft (3) integrally formed on the side near the support frame (4); The two ends of the limiting shaft (3) slide inside the two first strip grooves (6), respectively.

4. The biodegradable PE film cutting aid device as described in claim 1, characterized in that: The cutting board (5) is provided with a support roller (9) on the side away from the support frame (4). A rolling roller sleeve (7) is sleeved on the outside of the support roller (9). A base (1) is provided at both ends of the support roller (9). A base plate (2) is assembled and connected to the surface of the two bases (1) near the support frame (4). The two ends of the support frame (4) are respectively assembled and fixed to the surface of the top of the substrate (2) away from the base (1), so that the cutting plate (5) cuts the biodegradable PE film on the surface of the rolling roller sleeve (7).

5. The biodegradable PE film cutting aid device as described in claim 4, characterized in that: The outer surface of the rolling roller sleeve (7) is machined with a plurality of strip grooves (8), which are equally spaced around the center of the rolling roller sleeve (7), and the cross section of the plurality of strip grooves (8) is an isosceles triangle.

6. The biodegradable PE film cutting aid device as described in claim 4, characterized in that: The internal insertion connection of one end of the support shaft roller (9) is a limiting rod (20), and the external interference fit of one end of the support shaft roller (9) is a limiting ring (10). The limiting ring (10) is adapted to be connected to the outside of the limiting rod (20) on the side near the support shaft roller (9), and the limiting rod (20) restricts the position of the limiting ring (10) outside the support shaft roller (9).

7. The biodegradable PE film cutting aid device as described in claim 4, characterized in that: Both of the bases (1) are provided with limit posts (16) inside the side near the support shaft roller (9), and both ends of the support shaft roller (9) are machined with limit sleeves (19); The limiting sleeve (19) is plugged into the inside of the base (1), the limiting sleeve (19) is sleeved on the outside of the limiting post (16), and a torsion spring (18) is provided between the inner wall of the limiting sleeve (19) and the outside of the limiting post (16).

8. The biodegradable PE film cutting aid device as described in claim 7, characterized in that: The top of the limiting post (16) is provided with a second strip groove (17), the top of the limiting sleeve (19) is provided with a third strip groove (21), and the two ends of the torsion spring (18) are respectively hooked into the interior of the second strip groove (17) and the third strip groove (21).

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