Mulch film wrinkle prevention and rolling device

Abstract

The application provides a mulch wrinkle-preventing rolling equipment, and relates to the technical field of rolling, which comprises a rack, guide rollers, a rolling roller and a wrinkle-removing part. The wrinkle-removing part is arranged between the two guide rollers and comprises a concave curved roller body with a small middle diameter and large diameters at two ends. A roller is arranged above the roller body and is matched with the curved surface of the roller body. The curved roller body with a small middle diameter and large diameters at two ends is designed to preliminarily unfold and eliminate the wrinkles of the mulch. Meanwhile, through the cooperation with the roller, the fitting gap between the mulch and the roller body can be further eliminated, the linear speed difference mechanism of the roller body can be fully exerted, the lateral stretching of the mulch to two sides can be realized, and the wrinkle-removing effect can be further enhanced.

Description

Technical Field

[0001] This invention relates to the field of film winding technology, and more particularly to a film mulch film anti-wrinkle winding device. Background Technology

[0002] In the production and winding process of agricultural plastic mulch film, the winding equipment is a key link in ensuring the quality of the finished mulch film.

[0003] Common plastic film winding equipment typically includes a frame, a guide roller assembly located at the top of the frame, and a winding assembly. During operation, the plastic film passes around the guide rollers in sequence and connects to the winding rollers. Driven by the drive device, it is continuously wound up. This equipment mainly relies on the natural tension of the guide roller assembly to maintain the flatness of the plastic film surface. It has limited control over the surface tension distribution of the plastic film and is difficult to actively flatten the wrinkles that have been generated. This leads to problems such as folding, deviation, or misalignment of the plastic film during the winding process, ultimately resulting in poor winding quality. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a plastic film anti-wrinkle winding device that can overcome or at least partially solve the above problems.

[0005] To solve the above-mentioned technical problems, the present invention provides a plastic film anti-wrinkle winding device, including a frame, a pair of guide rollers and a winding component at the top of the frame, and a wrinkle-removing component disposed at the top of the frame and between the pair of guide rollers. The wrinkle-removing component includes a pair of connecting blocks fixedly connected to the top of the frame, and a roller for flattening the material is rotatably connected between the two connecting blocks. A third drive unit connected to one end of the roller is installed on one side of one of the connecting blocks, and a roller adapted to the curved surface is disposed at the center directly above the roller.

[0006] In some implementations, the roller body has a small diameter in the middle and a large diameter at both ends, with the diameter gradually increasing from the middle to both ends.

[0007] In some implementations, the guide roller assembly includes a pair of mounting blocks fixedly connected to the top of the frame, with a guide roller rotatably connected between the two mounting blocks.

[0008] In some implementations, the take-up component includes a pair of fixed plates fixedly connected to the top of the frame, a take-up roller rotatably mounted between the two fixed plates, a first drive unit mounted on one side of one of the fixed plates, a main pulley fixedly connected to the output end face of the first drive unit, a matching belt connected to the surface of the main pulley, a matching driven pulley connected to the inner surface of the belt, and the driven pulley fixedly connected to one end face of the take-up roller.

[0009] In some implementations, a concave seat is mounted between the two sides of the roller, and a connecting shaft is rotatably mounted between the two sides of the concave seat. A second drive unit connected to one end of the connecting shaft is installed on one side of the concave seat. The roller is fixedly connected to the surface of the connecting shaft. A vertical extension block is provided above the concave seat, and a concave frame is provided above the vertical extension block. The concave frame is fixedly connected between the tops of the two connecting blocks.

[0010] In some implementations, the top of the concave frame is provided with a threaded groove that extends through its thickness, and a lead screw is threadedly connected to the inner wall of the threaded groove. The bottom end of the lead screw is connected to the top of the vertical extension block through a bearing. Vertical rods are fixedly connected to the four corners of the top of the vertical extension block. The top of the concave frame is provided with a limiting groove that extends through its thickness and fits against the surface of the vertical rod.

[0011] In some implementations, the vertical extension block has a vertical telescopic groove inside, and a matching movable plate is attached to the inner wall of the vertical telescopic groove. An extension rod is fixedly connected to the bottom of the movable plate, and one end of the extension rod that extends through to the bottom of the vertical extension block is fixedly connected to the top of the concave seat. A first spring is sleeved on the surface of the extension rod and fixedly connected between the bottom of the movable plate and the bottom of the vertical telescopic groove.

[0012] In some implementations, the vertical extension block has a pair of insertion slots on one side of its periphery that communicate with the interior of the vertical telescopic groove. A horizontal extension block is fixedly connected to the side of the vertical extension block located in the insertion slot. A horizontal telescopic groove is formed on the side of the horizontal extension block corresponding to the vertical extension block. A matching push block is fitted to the inner wall of the horizontal telescopic groove. A pair of insertion blocks that slide along the inner wall of the insertion groove are fixedly connected to one side of the push block. A push rod is fixedly connected to the other side of the push block. A second spring is sleeved on the surface of the push rod and fixedly connected between the push block and the side wall of the horizontal telescopic groove. A limiting iron block is fixedly connected to one end of the push rod that extends to the outside of the horizontal extension block. A horizontal support rod is fixedly connected to each of the four corners of the limiting iron block on the side connected to the horizontal extension block. A panel is fixedly connected between the ends of each horizontal support rod. An electromagnet is installed on the side of the panel corresponding to the limiting iron block.

[0013] In some implementations, when the electromagnet is de-energized and separates from the limiting block, a pair of the plug blocks are attached between the top and bottom of the moving plate.

[0014] In some implementations, when the electromagnet is energized and attracts the limiting iron block, the insertion block is located in the insertion slot.

[0015] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: Through the coordinated design of the roller and roller, on the one hand, the roller adopts a curved profile with a small diameter in the middle and a large diameter at both ends. When the mulch film wraps around the roller, a tension difference is formed with a small diameter in the middle and a large diameter at both ends, thereby generating a lateral stretch from the middle to both sides, effectively unfolding and eliminating wrinkles, and initially achieving the flattening of the mulch film. On the other hand, a roller adapted to the curved surface of the roller is set directly above the roller. This roller applies a forward frictional force to the mulch film to assist in the smooth movement of the mulch film, while pressing the mulch film tightly against the roller surface, eliminating any gaps that may occur between the mulch film and the roller, ensuring that the linear speed difference mechanism of the roller can be fully utilized, thereby further enhancing the lateral stretching effect of the mulch film to both sides and achieving double wrinkle removal guarantee.

[0016] In addition, the rollers are designed to flexibly switch contact modes according to the material of the mulch film, enabling the device to adapt to wrinkle removal operations of various types of mulch film. Whether the mulch film is soft or strong, the best wrinkle removal effect can be achieved by adjusting the contact mode of the rollers, greatly improving the versatility and practicality of the device. Attached Figure Description

[0017] In the attached diagram: Figure 1 A left view of a plastic film anti-wrinkle winding device provided in an embodiment of the present invention; Figure 2 This is a right view of a film anti-wrinkle winding device provided in an embodiment of the present invention; Figure 3 for Figure 1 Schematic diagram of the connection structure between the middle roller and the roller conveyor; Figure 4 for Figure 3 Exploded view of the connection between the lead screw and the concave frame; Figure 5 for Figure 3 Schematic diagram of the connection structure between the concave seat and the vertical extension block; Figure 6 for Figure 5 Exploded view of the connection between the middle extension rod and the vertical extension block; Figure 7 for Figure 5 Schematic diagram of the cross-sectional structure of the central vertical extension block Figure 1 ; Figure 8 for Figure 7 A magnified view of the structure at point A in the middle; Figure 9 for Figure 5 Schematic diagram of the cross-sectional structure of the central vertical extension block Figure 2 ; Figure 10 for Figure 9 A magnified schematic diagram of the structure at point B in the middle.

[0018] In the diagram: 1. Frame; 2. Mounting block; 21. Guide roller; 3. Fixing plate; 31. Take-up roller; 32. First drive unit; 33. Main pulley; 34. Belt; 35. Driven pulley; 4. Connecting block; 41. Roller body; 42. Roller; 43. Concave seat; 44. Connecting shaft; 45. Second drive unit; 46. Vertical extension block; 47. Concave frame; 48. Threaded groove; 49. Lead screw; 410. Vertical rod ; 411, Limiting groove; 412, Vertical telescopic groove; 413, Moving plate; 414, Extension rod; 415, First spring; 416, Insertion groove; 417, Horizontal extension block; 418, Horizontal telescopic groove; 419, Push block; 420, Insertion block; 421, Push rod; 422, Second spring; 423, Limiting iron block; 424, Horizontal support rod; 425, Panel; 426, Electromagnet; 5, Third drive unit. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] like Figure 1 and Figure 2 As shown, a mulch film anti-wrinkle winding device includes a frame 1. The top of the frame 1 is provided with a pair of guide rollers and a winding component. The guide rollers include a pair of mounting blocks 2 fixedly connected to the top of the frame 1. A guide roller 21 is rotatably connected between the two mounting blocks 2. The winding component includes a pair of fixing plates 3 fixedly connected to the top of the frame 1. A winding roller 31 is rotatably mounted between the two fixing plates 3. A first drive unit 32 is installed on one side of one of the fixing plates 3. A main pulley 33 is fixedly connected to the output end face of the first drive unit 32. A matching belt 34 is connected to the surface of the main pulley 33. A matching driven pulley 35 is connected to the inner surface of the belt 34. The driven pulley 35 is fixedly connected to one end face of the winding roller 31.

[0021] It should be noted that the take-up roller 31 is detachable for quick replacement after winding. The specific connection and disassembly structure will not be described in detail here.

[0022] like Figures 1-4As shown, based on the above scheme, the equipment also includes a wrinkle-removing component, which is set on the top of the frame 1 and located between a pair of guide rollers. The wrinkle-removing component includes a pair of connecting blocks 4 fixedly connected to the top of the frame 1. A roller body 41 for flattening the material is rotatably connected between the two connecting blocks 4. A third drive unit 5 connected to one end of the roller body 41 is installed on one side of one of the connecting blocks 4 to drive the roller body 41 to rotate actively. During operation, the film passes around the lower surface of the first guide roller 21, the upper surface of the roller body 41, and the lower surface of the second guide roller 21 in sequence, and is finally connected to the take-up roller 31. During the take-up process, the first drive unit 32 using a servo motor is started. The first drive unit 32 drives the main pulley 33 to rotate. The main pulley 33 drives the driven pulley 35 to rotate synchronously through the belt 34. The driven pulley 35 then drives the take-up roller 31 to rotate. At the same time, the third drive unit 5 using a servo motor connected to one end of the roller body 41 is started, so that the roller body 41 rotates at an angular velocity that matches the take-up speed.

[0023] When the mulch film passes over the roller 41, the roller 41 is a "reverse-center high roller" characterized by a small diameter in the middle and a large diameter at both ends, with the diameter gradually increasing from the middle to both ends. At the same rotational speed, the ends have a higher circumferential linear velocity due to their larger diameter. When the mulch film is running under longitudinal tension, the longitudinal tension on both sides of the mulch film is greater than that on the middle part because the linear velocity at both ends is faster. This difference in longitudinal tension is converted into transverse tensile stress through the continuity of the mulch film material, causing the mulch film to stretch outward from the middle to both sides in the width direction, thereby effectively eliminating wrinkles. After the flattening effect of the roller 41, the mulch film can maintain a flat state before entering the winding roller 31, significantly improving the winding quality and avoiding problems such as looseness and uneven arrangement of the wound mulch film due to wrinkles, thus ensuring the subsequent storage and use effect of the mulch film.

[0024] It should be noted that the guide roller 21, located between the roller body 41 and the take-up roller 31, has a low-friction coating, such as Teflon, on its surface. At the same time, the wrap angle of the mulch film around the guide roller 21 is designed to be small, for example, no more than 30°. Under these conditions, the mulch film and the guide roller 21 mainly make sliding contact, and the transverse tension distribution established by the roller body 41 will not be smoothed out due to forced re-adhesion. The main function of the guide roller 21 is to smoothly transfer the flattened mulch film to the take-up roller 31, and prevent the mulch film from wrinkling again due to gravity or airflow in the free suspension section.

[0025] In practical use, it was found that because the roller body 41 adopts a concave curved surface structure with a small diameter in the middle and a large diameter at both ends, the curvature in the middle is significantly greater than that at both ends. When the mulch film is wrapped around the surface of the roller body 41, in the high curvature area in the middle, the mulch film must undergo a greater degree of bending deformation to achieve a tight fit with the roller body 41. However, the mulch film itself has certain rigidity and elasticity limits. Faced with such a rapid bending change, the mulch film may not be able to fully adapt. This leads to gaps easily appearing between the mulch film and the middle part of the roller body 41, making it impossible to form an ideal fit. This gap makes it difficult for the linear velocity difference mechanism of the roller body 41 to be transmitted to the mulch film. The longitudinal tension of the mulch film in the middle part is insufficient, and it is impossible to form an effective transverse tensile stress. The wrinkles cannot be fully unfolded and eliminated, and new wrinkles may even be generated due to uneven tension distribution.

[0026] To effectively solve this problem, such as Figures 3-5 As shown, a roller 42 adapted to the curved surface of the roller body 41 is disposed at the center of the upper part of the roller body 41. The roller 42 has a contour shape opposite to that of the roller body 41, that is, the diameter is large in the middle and the diameter is small at both ends, so as to fit tightly against the central area of ​​the upper surface of the roller body 41. A concave seat 43 is provided between the two sides of the roller 42. A connecting shaft 44 is rotatably disposed between the two sides of the concave seat 43. A second drive part 45 connected to one end of the connecting shaft 44 is installed on one side of the concave seat 43. The roller 42 is fixedly connected to the surface of the connecting shaft 44. A vertical extension block 46 is provided above the 3, and a concave frame 47 is provided above the vertical extension block 46. The concave frame 47 is fixedly connected between the tops of the two connecting blocks 4. A threaded groove 48 penetrating its thickness is opened on the top of the concave frame 47. A lead screw 49 is threadedly connected to the inner wall of the threaded groove 48. The bottom end of the lead screw 49 is connected to the top of the vertical extension block 46 through a bearing. Vertical rods 410 are fixedly connected to the four corners of the top of the vertical extension block 46. A limiting groove 411 penetrating its thickness and conforming to the surface of the vertical rod 410 is opened on the top of the concave frame 47.

[0027] In actual operation, the operator only needs to rotate the lead screw 49 so that the lead screw 49 rotates along the inner wall of the threaded groove 48. At this time, the vertical extension block 46 will move downward until the roller 42 contacts the surface of the mulch film, pressing the mulch film tightly onto the surface of the roller body 41. Through the pressing action of the roller 42, the tiny gap between the mulch film and the roller body 41 can be eliminated, ensuring that the linear speed difference mechanism of the roller body 41 can be fully utilized. Under the action of longitudinal tension, the mulch film will be stretched laterally in the direction of the edge with faster linear speed, thereby effectively unfolding and eliminating wrinkles. Subsequently, the second drive unit 45 is activated, driving the connecting shaft 44 to rotate, which in turn causes the roller 42 to rotate. The rotation of the roller 42 can generate additional forward friction force on the mulch film, assisting the mulch film to drive the roller body 41 to rotate more smoothly, further ensuring the stability of the flattening process.

[0028] like Figure 6 , Figure 7 and Figure 9 As shown, in the above technical solution, if the concave seat 43 and the bottom of the vertical extension block 46 are fixedly connected, then the contact between the roller 42 and the surface of the mulch film is a hard contact. For high-strength, thickened, composite long-life mulch film, this hard contact may not cause damage and can provide sufficient pressure and friction to remove wrinkles. However, for thin mulch film with soft texture and low strength, hard contact can easily lead to excessive pressure and damage to the mulch film. Therefore, based on this, a vertical telescopic groove 412 is provided inside the vertical extension block 46. A matching movable plate 413 is attached to the inner wall of the vertical telescopic groove 412. An extension rod 414 is fixedly connected to the bottom of the movable plate 413. One end of the extension rod 414, which extends through to the bottom of the vertical extension block 46, is fixedly connected to the top of the concave seat 43. A first spring 415 is fixedly connected between the bottom of the movable plate 413 and the bottom of the vertical telescopic groove 412 on the surface of 14. When the roller 42 contacts the mulch film, the mulch film generates an upward reaction force on the roller 42. This force is transmitted to the movable plate 413 through the concave seat 43 and the extension rod 414, causing the movable plate 413 to stretch the first spring 415 upward, thereby reducing the pressure of the roller 42 on the mulch film and achieving elastic contact. If there are slight undulations on the surface of the mulch film or if it encounters obstacles, the roller 42 can float up and down within a certain range. This elastic buffer can disperse the pressure of the roller 42 on the mulch film, prevent the mulch film from being crushed or torn due to pressure concentration, and ensure the integrity and quality of the mulch film. It is suitable for thin mulch films with soft texture and low strength.

[0029] like Figures 6-10 As shown, to enable the roller 42 to flexibly switch the contact method with the mulch film according to different mulch film materials, i.e., hard contact or elastic contact, a pair of insertion slots 416 communicating with the inside of the vertical extension block 412 are opened on one side of the vertical extension block 46. A horizontal extension block 417 is fixedly connected to the side of the vertical extension block 46 located in the insertion slot 416. A horizontal extension slot 418 is opened on the side of the horizontal extension block 417 corresponding to the vertical extension block 46. A matching push block 419 is attached to the inner wall of the horizontal extension slot 418. A pair of insertion blocks that slide along the inner wall of the insertion slot 416 are fixedly connected to one side of the push block 419. A push rod 421 is fixedly connected to the other side of the push block 419. A second spring 422 is fixedly connected between the push block 419 and the side wall of the horizontal extension groove 418 and sleeved on the surface of the push rod 421. A limit block 423 is fixedly connected to one end of the push rod 421 that extends to the outside of the horizontal extension block 417. A horizontal support rod 424 is fixedly connected to each of the four corners of the limit block 423 on the side connected to the horizontal extension block 417. A panel 425 is fixedly connected between the corresponding ends of each horizontal support rod 424. An electromagnet 426 is installed on the side of the panel 425 corresponding to the limit block 423.

[0030] When the mulch film is a high-strength, thickened, composite long-life mulch film, the electromagnet 426 is de-energized. At the instant of de-energization, the limiting iron block 423, which was originally tightly attached to the electromagnet 426 due to electromagnetic attraction, loses its attraction and is then pushed by the elastic restoring force of the second spring 422. This pushes the push block 419 along the inner wall of the horizontal extension groove 418 towards the vertical extension block 46. During this movement, the push block 419 drives the push rod 421, which is fixedly connected to it, to move synchronously. The limiting iron block 423, connected to the other end of the push rod 421, then adheres to the outer side of the horizontal extension block 417. Simultaneously, a pair of insertion blocks 420 fixed on the push block 419 slide along the inner wall of the insertion groove 416 into the vertical extension groove 412 and are securely engaged between the top and bottom of the moving plate 413. The specific state is as follows: Figure 8 As shown.

[0031] Under the strict constraints of the two plug-in blocks 420, the movable plate 413 can no longer slide along the inner wall of the vertical expansion groove 412. Since the movable plate 413 is fixed, the concave seat 43 connected to its bottom by the extension rod 414 is also fixed. This allows the roller 42 installed on the concave seat 43 to press firmly on the surface of the mulch film in a hard contact manner, avoiding wrinkles, unevenness or displacement of the mulch film during the laying process due to insufficient pressure, thus meeting the wrinkle removal requirements of high-strength thickened composite long-life mulch film.

[0032] When the mulch film is a thin film with soft texture and low strength, the electromagnet 426 is energized. At the moment of energization, the electromagnet 426 tightly attracts the limiting iron block 423. During the attraction process, the limiting iron block 423 drives the push rod 421 to move closer to the electromagnet 426. The push block 419 connected to one end of the push rod 421 slides along the inner wall of the horizontal telescopic groove 418 and compresses the second spring 422. As the push block 419 moves, the insertion block 420 fixed on the push block 419 is pulled out from the vertical telescopic groove 412 and slides into the insertion groove 416. The specific state is as follows: Figure 10 As shown, at this time, the movable plate 413 is no longer restricted by the plug block 420 and is in a free-moving state, so that the roller 42 installed on the concave seat 43 presses steadily on the surface of the mulch film in an elastic contact manner, avoiding damage to the thin mulch film due to excessive pressure, and meeting the requirements of the thin mulch film with soft texture and low strength.

[0033] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A film mulch film anti-wrinkle winding device, comprising: The frame (1), wherein a pair of guide rollers and a winding member are provided at the top of the frame (1), is characterized in that it further includes: The wrinkle-removing component is disposed at the top of the frame (1) and located between a pair of guide rollers; The wrinkle-removing component includes a pair of connecting blocks (4) fixedly connected to the top of the frame (1), and a roller (41) for flattening the material is rotatably connected between the two connecting blocks (4). A third drive unit (5) connected to one end of the roller (41) is installed on one side of one of the connecting blocks (4), and a roller (42) adapted to its curved surface is provided at the center directly above the roller (41).

2. The anti-wrinkle winding device for mulch film according to claim 1, characterized in that, The roller body (41) has a small diameter in the middle and a large diameter at both ends, and the diameter gradually increases from the middle to both ends.

3. The anti-wrinkle winding device for mulch film according to claim 1, characterized in that, The guide roller assembly includes a pair of mounting blocks (2) fixedly connected to the top of the frame (1), and a guide roller (21) is rotatably connected between the two mounting blocks (2).

4. The anti-wrinkle winding device for mulch film according to claim 1, characterized in that, The take-up component includes a pair of fixed plates (3) fixedly connected to the top of the frame (1), and a take-up roller (31) is rotatably mounted between the two fixed plates (3). A first drive unit (32) is mounted on one side of one of the fixed plates (3). A main pulley (33) is fixedly connected to the output end face of the first drive unit (32). A matching belt (34) is connected to the surface of the main pulley (33). A matching driven pulley (35) is connected to the inner surface of the belt (34). The driven pulley (35) is fixedly connected to one end face of the take-up roller (31).

5. The anti-wrinkle winding device for mulch film according to claim 1, characterized in that, A concave seat (43) is mounted between the two sides of the roller (42), and a connecting shaft (44) is rotatably mounted between the two sides of the concave seat (43). A second drive unit (45) connected to one end of the connecting shaft (44) is installed on one side of the concave seat (43). The roller (42) is fixedly connected to the surface of the connecting shaft (44). A vertical extension block (46) is provided above the concave seat (43), and a concave frame (47) is provided above the vertical extension block (46). The concave frame (47) is fixedly connected between the tops of the two connecting blocks (4).

6. The anti-wrinkle winding device for mulch film according to claim 5, characterized in that, The top of the concave frame (47) is provided with a threaded groove (48) that penetrates its thickness. The inner wall of the threaded groove (48) is threaded with a lead screw (49). The bottom end of the lead screw (49) is connected to the top of the vertical extension block (46) through a bearing. Vertical rods (410) are fixedly connected to the four corners of the top of the vertical extension block (46). The top of the concave frame (47) is provided with a limiting groove (411) that penetrates its thickness and fits against the surface of the vertical rod (410).

7. The anti-wrinkle winding device for mulch film according to claim 5, characterized in that, The vertical extension block (46) has a vertical telescopic groove (412) inside. The inner wall of the vertical telescopic groove (412) is fitted with a matching movable plate (413). An extension rod (414) is fixedly connected to the bottom of the movable plate (413). One end of the extension rod (414) extends through to the bottom of the vertical extension block (46) and is fixedly connected to the top of the concave seat (43). A first spring (415) is sleeved on the surface of the extension rod (414) and is fixedly connected between the bottom of the movable plate (413) and the bottom of the vertical telescopic groove (412).

8. The anti-wrinkle winding device for mulch film according to claim 7, characterized in that, The vertical extension block (46) has a pair of insertion slots (416) on one side of its periphery that communicate with the interior of the vertical telescopic groove (412). A horizontal extension block (417) is fixedly connected to one side of the vertical extension block (46) in the insertion slot (416). A horizontal telescopic groove (418) is opened on the side of the horizontal extension block (417) corresponding to the vertical extension block (46). A matching push block (419) is fitted to the inner wall of the horizontal telescopic groove (418). A pair of insertion blocks (420) that slide along the inner wall of the insertion slot (416) are fixedly connected to one side of the push block (419). A push rod is fixedly connected to the other side of the push block (419). 421), the surface of the push rod (421) is fitted with a second spring (422) fixedly connected between the push block (419) and the side wall of the horizontal telescopic groove (418). The end of the push rod (421) that extends through to the outside of the horizontal extension block (417) is fixedly connected to a limiting iron block (423). The four corners of the limiting iron block (423) on the side connected to the horizontal extension block (417) are all fixedly connected with horizontal support rods (424). A panel (425) is fixedly connected between the corresponding ends of each horizontal support rod (424). An electromagnet (426) is installed on the side of the panel (425) corresponding to the limiting iron block (423).

9. The anti-wrinkle winding device for mulch film according to claim 8, characterized in that, When the electromagnet (426) is de-energized and separates from the limiting block (423), a pair of the plug blocks (420) are attached between the top and bottom of the moving plate (413).

10. The anti-wrinkle winding device for mulch film according to claim 8, characterized in that, When the electromagnet (426) is energized and attracts the limiting iron block (423), the plug block (420) is located in the plug slot (416).

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