A residue-free plastic film recycling device for plastic film recycling

Abstract

This invention provides a residue-free plastic film recycling device for plastic film recycling, belonging to the field of agricultural machinery technology. The device includes a frame, a winding assembly, a first drive mechanism, and a rotating recycling assembly. The winding assembly is used to fix the starting end of the plastic film and wind it up. Multiple rotating recycling assemblies are arranged parallel to each other and diagonally upwards along the frame. Each rotating recycling assembly includes a cam column, a guide frame, an elastic element, a spike roller, and a piercing spike. In this residue-free plastic film recycling device, when the guide frame drives the spike roller to the protruding structure of the cam column, the spike roller drives the piercing spike to pierce the plastic film, causing it to detach from the ground. When the spike roller detaches from the protruding structure, it drives the piercing spike to retract, avoiding excessive traction. The remaining rotating recycling assemblies can convey the plastic film detached from the ground to the winding assembly, causing the plastic film to move in a wave-like, gradual motion, preventing damage to the plastic film during recycling.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a residue-free plastic film recycling device for plastic film recycling. Background Technology

[0002] Cool regions are the main agricultural areas for plastic film mulching cultivation. Due to drought, water scarcity, and cold temperatures, plastic film mulching effectively increases soil temperature, reduces soil moisture evaporation, and significantly increases yields. While plastic film mulching has promoted agricultural production and increased farmers' income, the management of residual plastic film pollution in farmland has lagged far behind, leading to serious problems of residual film contamination. Existing plastic film recycling devices often damage the film during the recycling and winding process due to improper handling, leaving some damaged film residue on the soil and causing pollution. Therefore, there is an urgent need for a residue-free plastic film recycling device to solve this problem.

[0003] The information disclosed in the background section of this invention is intended only to enhance the understanding of the general background of this invention, and should not be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art. Summary of the Invention

[0004] Therefore, it is necessary to provide a residue-free plastic film recycling device to address the problems existing in current plastic film recycling equipment, in order to solve the problem of plastic film damage during the recycling process caused by improper handling in existing plastic film recycling equipment.

[0005] The above objectives are achieved through the following technical solutions:

[0006] A residue-free plastic film recycling device for plastic film recycling includes a frame and a winding assembly, a first drive mechanism, and at least two rotating recycling assemblies disposed on the frame.

[0007] The winding assembly is used to fix the starting end of the mulch film and wind it up; the rotating recovery assembly is used to separate the mulch film from the ground under the drive of the first drive mechanism and move the mulch film toward the winding assembly; multiple rotating recovery assemblies are arranged parallel to each other and along the upward direction of the frame; the rotating recovery assembly includes a cam column, a guide frame, an elastic element, a nail roller, and a piercing nail;

[0008] The cam column is fixedly connected to the frame, and the cam column has a protruding structure extending along its axial direction. The angle between the protruding structure and the horizontal plane in different rotating recovery assemblies gradually increases along the upward direction of the frame.

[0009] The guide frame is disposed at both ends of the cam column and is rotatably connected to the end of the cam column. The guide frame is driven to rotate by the first driving mechanism. The guide frame has a plurality of guide rods arranged circumferentially thereon.

[0010] The nail roller is disposed between the two guide rods positioned opposite each other on the guide frame, and the ends of the nail rollers are slidably connected to the guide rods so that the nail rollers can slide along the extension direction of the guide rods;

[0011] The elastic element is disposed between the guide rod and the nail roller, and is used to pull the nail roller to conform to the outer surface of the cam post, so that the movement trajectory of the nail roller is the same as the outer contour of the cam post;

[0012] The piercing nail, mounted on the nail roller, is capable of piercing the mulch film.

[0013] In one embodiment, the rotating recovery assembly further includes a slider and a central rotating shaft;

[0014] The slider is slidably connected to the guide rod so that the slider can slide along the extension direction of the guide rod;

[0015] The central rotating shaft is disposed inside the nail roller and can rotate relative to the nail roller. The two ends of the central rotating shaft are respectively rotatably connected to the middle of the slider. A gear is fixedly connected to the central rotating shaft. The guide rod has a rack groove, which is arranged along the extension direction of the guide rod. The gear meshes with the rack groove. The slider slides in the rack groove. The middle of the central rotating shaft is connected to the piercing nail to drive the piercing nail to rotate.

[0016] The elastic element is connected to the slider and the guide rod at its two ends, respectively.

[0017] In one embodiment, the puncture nail is connected to the central rotating shaft via a bevel gear mechanism.

[0018] In one embodiment, a plurality of puncture nails are provided and arranged along the axial direction of the nail roller. A plurality of puncture nails near one end of the nail roller are inclined toward one end of the nail roller, and a plurality of puncture nails near the other end of the nail roller are inclined toward the other end of the nail roller. A portion of the structure of the puncture nail is disposed inside the nail roller and is respectively connected to the central rotating shaft and the nail roller for transmission, so that the puncture nail can rotate and extend.

[0019] In one embodiment, the puncture nail includes a limiting section and a puncture section; the bottom of the limiting section is drivenly connected to the central rotating shaft to drive the limiting section to rotate, the top of the limiting section is slidably connected to the puncture section so that the puncture section can slide along the extension direction of the limiting section, and the puncture section is threadedly connected to the nail roller.

[0020] In one embodiment, at least the structure of the puncture nail located outside the nail roller is cylindrical, and the end of the puncture nail that contacts the mulch film is hemispherical.

[0021] In one embodiment, the guide rod has two parallel guide grooves, and the end of the nail roller has two sliding columns that are slidably connected to the guide grooves.

[0022] In one embodiment, the first drive mechanism includes a second motor, a drive shaft, a drive wheel, a conveyor belt, and a driven wheel;

[0023] The second motor is mounted on the frame;

[0024] Both ends of the drive shaft are rotatably connected to the frame, and one end of the drive shaft is fixedly connected to the output shaft of the second motor;

[0025] The drive wheel is fixedly connected to the drive shaft;

[0026] The driven wheel is fixedly connected to the end of the guide frame;

[0027] The driving wheel and the driven wheel, as well as adjacent driven wheels, are all connected by the conveyor belt.

[0028] In one embodiment, the winding assembly includes a first motor and a winding roller; the first motor is mounted on the frame; both ends of the winding roller are rotatably connected to the frame, and one end of the winding roller is fixedly connected to the output shaft of the first motor. The winding roller is used to fix the starting end of the mulch film and wind up the mulch film.

[0029] In one embodiment, the frame includes two interconnected support plates, the winding assembly, the first drive mechanism and the rotating recovery assembly are all disposed between the two support plates, the support plates have inclined side lines, and the rotating recovery assembly is arranged along the side lines.

[0030] The beneficial effects of this invention are:

[0031] In the residual film recycling equipment for mulch film recycling of this invention embodiment, when the guide frame drives the nail roller to move to the protruding structure of the cam column, the nail roller drives the piercing nail to strike and pierce the mulch film, lifting the mulch film so that it separates from the ground. When the nail roller separates from the protruding structure, it drives the piercing nail to retract to avoid excessive traction. The rotating recycling component located in the middle and top of the frame can convey the mulch film separated from the ground to the winding component, so that the mulch film moves in a wave-like progressive motion, eliminating the situation in the prior art where the mulch film is easily damaged by traction of the mulch film through a single force point. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of a residue-free plastic film recycling device according to an embodiment of the present invention.

[0033] Figure 2 This is a top view of a residue-free plastic film recycling device according to an embodiment of the present invention.

[0034] Figure 3 For the present invention Figure 2 Sectional view of AA;

[0035] Figure 4 For the present invention Figure 2 BB section view;

[0036] Figure 5 This is a schematic diagram of the structure of a rotating recycling assembly according to an embodiment of the present invention;

[0037] Figure 6 For the present invention Figure 5 CC section view;

[0038] Figure 7 For the present invention Figure 6 Enlarged view of a section at point D;

[0039] Figure 8 This is a schematic diagram of the structure of a guide frame according to an embodiment of the present invention;

[0040] Figure 9 This is a schematic diagram of the guide groove and sliding column according to an embodiment of the present invention;

[0041] Figure 10 This is a schematic diagram of the structure of a puncture nail according to an embodiment of the present invention.

[0042] in:

[0043] 100. Frame; 101. Support plate; 102. Take-up roller; 103. First motor; 104. Second motor; 105. Drive shaft; 106. Conveyor belt; 200. Rotary recovery assembly; 201. Cam column; 202. Guide frame; 203. Driven wheel; 204. Spring; 205. Slider; 206. Rack groove; 207. Central rotating shaft; 208. Nail roller; 209. Piercing nail; 210. Limiting section; 211. Piercing section; 212. Guide groove. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0045] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0047] In some embodiments, refer to Figure 1 and Figure 2The residue-free plastic film recycling equipment includes a frame 100 and a winding assembly, a first drive mechanism, and at least two rotating recycling assemblies 200 mounted on the frame 100. The winding assembly secures the starting end of the plastic film and winds it up. The starting end of the plastic film can be manually wound onto the winding assembly to secure it. The rotating recycling assemblies 200, driven by the first drive mechanism, separate the plastic film from the ground and move it towards the winding assembly. Three to six rotating recycling assemblies 200 can be used, moving synchronously to move the plastic film towards the winding assembly. The multiple rotating recycling assemblies 200 are arranged parallel to each other and diagonally upwards along the frame 100, gradually increasing the height of the plastic film. This facilitates the removal of soil, weeds, and other debris from the plastic film, reducing its weight and preventing tearing due to excessive weight.

[0048] The rotating recycling assembly 200 in the residue-free plastic film recycling equipment of the above embodiments includes a cam column 201, a guide frame 202, an elastic element, a nail roller 208, and a piercing nail 209. The two ends of the cam column 201 are fixedly connected to the frame 100, and the cam column 201 has a protruding structure extending along its axial direction, as shown in the figure. Figure 3 The cam column 201 has a cylindrical structure with a protruding structure extending beyond its outer circle. The central angle corresponding to the location of the protruding structure is between 60 and 120 degrees. The side of the protruding structure away from the cam column 201 has an arc-shaped surface, and the portion of the protruding structure adjacent to the cam column 201 is a vertical structure pointing towards the axis of the cam column 201. The angle between the protruding structure and the horizontal plane in different rotation recovery assemblies 200 gradually increases along the upward direction of the frame 100. For example, when there are four rotation recovery assemblies 200, the angles between the centerline of the protruding structure and the horizontal plane are -55°, 0°, 55°, and 110°, respectively.

[0049] The guide frame 202 is located at both ends of the cam column 201 and is rotatably connected to the end of the cam column 201. The guide frame 202 is driven to rotate by the first drive mechanism. The guide frame 202 has multiple guide rods arranged along its circumference. The length of the guide rod is greater than the distance from the axis of the cam column 201 to the arc side of the protruding structure. The number of guide rods can be selected from 5 to 8.

[0050] The nail roller 208 is positioned between two guide rods opposite each other on the two guide frames 202. The ends of the nail roller 208 are slidably connected to the guide rods, allowing the nail roller 208 to slide along the extension direction of the guide rods. An elastic element is disposed between the guide rods and the nail roller 208, as shown in the reference diagram. Figure 5The elastic element can be a spring 204, which is used to pull the nail roller 208 to conform to the outer surface of the cam post 201 so that the movement trajectory of the nail roller 208 is the same as the outer contour of the cam post 201. The piercing nail 209 is installed on the nail roller 208 and can pierce the mulch film.

[0051] Specifically, in this embodiment, the residual film recycling equipment is installed on a traction device, such as the front end of a tractor. The traction device pushes the residual film recycling equipment to move on the land where the film is laid, and to recycle the film.

[0052] Specifically, manually lift the plastic film and cover it onto the rotating recycling assembly 200, wrap the starting end of the film around the winding assembly, and start the equipment to recycle the film. (Refer to...) Figure 3 The rotating recovery assembly 200, located at the bottom of the frame 100, is used to detach the mulch film from the ground. In this assembly, the guide frame 202 rotates clockwise, causing the nail roller 208 to move to the side wall of the raised structure. The nail roller 208 adheres to the side wall of the raised structure and moves away from the axis of the cam column 201. The nail roller 208 drives the piercing nail 209 to extend forward and pierce the mulch film. The nail roller 208 continues to move along the arc-shaped surface of the raised structure. During this process, the nail roller 208 drives the piercing nail 209 to lift the mulch film, detaching it from the ground. When the nail roller 208 moves to the other side wall of the raised structure, under the tension of the elastic element, it is pulled onto the cylindrical section of the cam column 201. During this process, the nail roller 208 drives the piercing nail 209 to retract, detaching the piercing nail 209 from the mulch film and preventing excessive pulling of the piercing nail 209 from causing tearing or damage to the mulch film.

[0053] The rotating recovery assembly 200, located in the middle and at the top of the frame 100, is used to convey the mulch film that has detached from the ground to the winding assembly. When the piercing nail 209 is on the raised structure, the piercing nail 209 can pierce the mulch film and drive it upward, or the piercing nail 209 can move the mulch film upward by friction between the mulch film and the end of the piercing nail 209 without piercing it. When the piercing nail 209 is below the raised structure, the piercing nail 209 no longer contacts the mulch film, preventing the piercing nail 209 on the same rotating recovery assembly 200 from excessively pulling on the mulch film and causing it to tear or break. The piercing nails 209 on each rotating recovery assembly 200 can drive the mulch film to move at certain intervals. Since multiple rotating recovery assemblies 200 are set with different protrusion angles, when the piercing nails 209 on one rotating recovery assembly 200 do not drive the mulch film to move, the piercing nails 209 on the other rotating recovery assemblies 200 can also drive the mulch film to move, so that the mulch film moves in a wave-like progressive manner. This avoids the situation in the prior art where the mulch film is easily damaged by pulling the mulch film through a single force point. Furthermore, since the protrusion angle gradually increases, it avoids the mulch film being pulled by the piercing nails 209 on different rotating recovery assemblies 200 at the same position, preventing the mulch film from being damaged due to repeated force at the same position.

[0054] It is important to note that waste plastic film is often covered with soil, weeds, and other debris. If this debris is not cleaned, it will be rolled up to the winding assembly, affecting the winding effect. To address this issue, in this embodiment, the movement trajectory of the nail roller 208 at the protruding structure changes abruptly, causing the nail roller 208 to drive the piercing nails 209 to impact the plastic film, causing the film to shake and dislodging the soil adhering to it. Furthermore, in this embodiment, multiple rotating recycling components 200 are arranged parallel to each other and diagonally upwards along the frame 100, allowing debris to fall off under gravity. This residue-free plastic film recycling equipment of this embodiment can effectively clean debris from the plastic film.

[0055] In some embodiments, the rotating recovery assembly 200 further includes a slider 205 and a central rotating shaft 207. The slider 205 is slidably connected to a guide rod, allowing it to slide along the extension direction of the guide rod. The central rotating shaft 207 is disposed inside the nail roller 208 and is rotatable relative to the nail roller 208. Both ends of the central rotating shaft 207 are rotatably connected to the middle of the slider 205, and gears are fixedly connected to the central rotating shaft 207. (Refer to...) Figure 8The guide rod has a rack groove 206, which is an elongated oval structure. Straight teeth are provided on one inner wall of the rack groove 206. The rack groove 206 is positioned along the extension direction of the guide rod. A gear meshes with the rack groove 206. The slider 205 slides within the rack groove 206. The central rotating shaft 207 is connected to the piercing nail 209 at its center, driving the piercing nail 209 to rotate around its own axis. The two ends of an elastic element are connected to the slider 205 and the guide rod, respectively. The elastic element can be a spring 204.

[0056] In the above embodiment, during the linear motion of the nail roller 208 along the guide rod, the nail roller 208 drives the central rotating shaft 207 to move synchronously. Simultaneously, the gear on the central rotating shaft 207 meshes with the rack groove 206, thereby causing the central rotating shaft 207 to rotate around its own axis, which in turn causes the piercing nail 209 to rotate around its own axis. The slider 205 serves to limit the movement of the central rotating shaft 207, and the elastic element provides tension to assist the slider 205 in resetting.

[0057] It should be noted that the puncture nail 209 in this embodiment is rotatable. When the puncture nail 209 rotates, the contact part between the mulch film and the puncture nail 209 can be twisted together, which helps the puncture nail 209 to drive the mulch film off the ground.

[0058] In some embodiments, refer to Figure 6 and Figure 7 The piercing nail 209 is connected to the central rotating shaft 207 via a bevel gear mechanism. The bevel gear can change the transmission direction of the central rotating shaft 207, or other transmission methods can be used.

[0059] In some embodiments, refer to Figure 6 Multiple puncture nails 209 are provided and arranged along the axial direction of the nail roller 208. Multiple puncture nails 209 near one end of the nail roller 208 are inclined towards one end of the nail roller 208, and multiple puncture nails 209 near the other end of the nail roller 208 are inclined towards the other end of the nail roller 208. Part of the structure of the puncture nails 209 is provided inside the nail roller 208 and is respectively connected to the central rotating shaft 207 and the nail roller 208 for transmission, so that the puncture nails 209 can rotate and extend.

[0060] Specifically, in this embodiment, each nail roller 208 can have 8 to 16 piercing nails 209. Half of the piercing nails 209 are inclined to the left side of the nail roller 208, and the other half are inclined to the right side. As the nail roller 208 moves closer to the mulch film, the piercing nails 209 can also extend along their own axis. Because the piercing nails 209 are inclined and can extend along their own axis, they can push the mulch film in its width direction, thereby unfolding some folded mulch film, which helps to release debris trapped in the mulch film and to roll up the mulch film. In addition, some damaged or warped mulch film can be pierced together with the mulch film on the ground, which helps to recycle the mulch film without residue.

[0061] In some embodiments, refer to Figure 10 The piercing nail 209 includes a limiting section 210 and a piercing section 211. Specifically, the bottom of the limiting section 210 is drivenly connected to the central rotating shaft 207 to rotate under the drive of the central rotating shaft 207, and the top of the limiting section 210 is slidably connected to the piercing section 211 so that the piercing section 211 can slide along the extension direction of the limiting section 210. The piercing section 211 is threadedly connected to the nail roller 208.

[0062] In the above embodiment, the central rotating shaft 207 drives the limiting section 210 to rotate. The limiting section 210 and the piercing section 211 are connected by a linear slide groove. Due to the limiting effect of the slide groove, the piercing section 211 rotates synchronously with the limiting section 210. Since the piercing section 211 is connected to the nail roller 208 by a threaded transmission, the piercing section 211 can move linearly along its axial direction while rotating itself.

[0063] In some embodiments, at least the structure of the puncture nail 209 located outside the nail roller 208 is cylindrical, and the end of the puncture nail 209 that contacts the mulch film is hemispherical. The contact portion of the puncture nail 209 with the mulch film has a smooth arc-shaped structure to prevent the edge of the puncture nail 209 from being too sharp and tearing the mulch film. The hemispherical end of the puncture nail 209 can prevent the puncture hole from being too large.

[0064] In some embodiments, refer to Figure 8 and Figure 9 The guide rod has two parallel guide grooves 212, which can be set on both sides of the rack groove 206. The end of the nail roller 208 has two sliding columns, which are slidably connected to the guide grooves 212. The two parallel guide grooves 212 can ensure that the nail roller 208 slides in a straight line.

[0065] In some embodiments, refer to Figure 1 and Figure 4The first drive mechanism includes a second motor 104, a drive shaft 105, a drive wheel, a conveyor belt 106, and a driven wheel 203. The second motor 104 is mounted on the frame 100. Both ends of the drive shaft 105 are rotatably connected to the frame 100, and one end of the drive shaft 105 is fixedly connected to the output shaft of the second motor 104. The drive wheel is fixedly connected to the drive shaft 105, and the driven wheel 203 is fixedly connected to the end of the guide frame 202. The drive wheel and the driven wheel 203, as well as adjacent driven wheels 203, are connected by the conveyor belt 106.

[0066] In the above embodiment, the second motor 104 drives the transmission shaft 105 to rotate, and the driving wheel rotates with the transmission shaft 105. Through the connection of the conveyor belt 106, the power can be transmitted to each driven wheel 203, and then the driven wheel 203 drives the guide frame 202 to rotate. The driven wheel 203 has two guide grooves, and the conveyor belt 106 on adjacent driven wheels 203 is fitted into the guide grooves with opposite positions.

[0067] In some embodiments, the winding assembly includes a first motor 103 and a winding roller 102. The first motor 103 is mounted on the frame 100. Both ends of the winding roller 102 are rotatably connected to the frame 100. One end of the winding roller 102 is fixedly connected to the output shaft of the first motor 103. The winding roller 102 is used to fix the starting end of the mulch film and wind up the mulch film. The first motor 103 drives the winding roller 102 to rotate and wind up the mulch film.

[0068] In some embodiments, the frame 100 includes two support plates 101 connected to each other, and the winding assembly, the first drive mechanism and the rotating recovery assembly 200 are all disposed between the two support plates 101. The support plates 101 have inclined side lines, and the rotating recovery assembly 200 is arranged along the side lines.

[0069] The working process of the residue-free plastic film recycling equipment in the above embodiment is as follows: The plastic film is manually lifted and covered onto the rotating recycling component 200. The starting end of the plastic film is wound around the take-up roller 102. The equipment is started to recycle the plastic film. Under the indirect drive of the second motor 104, the guide frame 202 rotates around the axis of the cam column 201. The guide frame 202 drives the nail roller 208 to move to the protruding structure. The movement trajectory of the nail roller 208 changes abruptly, causing the piercing nail 209 to strike and pierce the plastic film, causing the plastic film to shake and dislodging the soil and other debris adhering to it. As the nail roller 208 continues to move, the piercing nail 209 lifts the plastic film... As the plastic film detaches from the ground, the nail roller 208 moves to the other side wall of the raised structure. Under the tension of the spring 204, the nail roller 208 is pulled onto the cylindrical section of the cam column 201. During this process, the nail roller 208 drives the piercing nail 209 to retract, causing the piercing nail 209 to detach from the plastic film, preventing excessive pulling of the plastic film by the piercing nail 209 from causing tearing and damage. The rotating recovery assembly 200, located in the middle and at the top of the frame 100, is used to convey the plastic film detached from the ground to the winding assembly, making the plastic film move in a wave-like, gradual manner. This eliminates the problem of plastic film damage caused by pulling the plastic film through a single force point, as is common in existing technologies. After passing through the rotating recovery assembly 200, the plastic film is wound onto the winding roller 102, completing the residue-free recovery of the plastic film.

[0070] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0071] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A residue-free plastic film recycling device for plastic film recycling, characterized in that, It includes a frame (100) and a winding assembly, a first drive mechanism and at least two rotating recovery assemblies (200) disposed on the frame (100). The winding assembly is used to fix the starting end of the mulch film and wind it up; the rotating recovery assembly (200) is used to separate the mulch film from the ground and move it towards the winding assembly under the drive of the first driving mechanism; multiple rotating recovery assemblies (200) are arranged parallel to each other and along the oblique upward direction of the frame (100); the rotating recovery assembly (200) includes a cam column (201), a guide frame (202), an elastic element, a nail roller (208), and a piercing nail (209). The cam column (201) is fixedly connected to the frame (100), and the cam column (201) has a protruding structure extending along its axial direction. The angle between the protruding structure and the horizontal plane in different rotating recovery assemblies (200) gradually increases along the oblique upward direction of the frame (100). The guide frame (202) is disposed at both ends of the cam column (201) and is rotatably connected to the end of the cam column (201). The guide frame (202) is driven to rotate by the first driving mechanism. The guide frame (202) has a plurality of guide rods arranged along its circumference. The nail roller (208) is disposed between the guide rods of the two guide frames (202) at opposite positions. The ends of the nail roller (208) are slidably connected to the guide rods so that the nail roller (208) can slide along the extension direction of the guide rods. The elastic element is disposed between the guide rod and the nail roller (208) for pulling the nail roller (208) to conform to the outer surface of the cam column (201) so that the movement trajectory of the nail roller (208) is the same as the outer contour of the cam column (201); The piercing nail (209) is mounted on the nail roller (208) and is capable of piercing the mulch film.

2. The residue-free plastic film recycling equipment for plastic film recycling according to claim 1, characterized in that, The rotating recovery assembly (200) also includes a slider (205) and a central rotating shaft (207). The slider (205) is slidably connected to the guide rod so that the slider (205) can slide along the extension direction of the guide rod; The central rotating shaft (207) is disposed inside the nail roller (208) and can rotate relative to the nail roller (208). The two ends of the central rotating shaft (207) are respectively rotatably connected to the middle of the two oppositely arranged sliders (205). A gear is fixedly connected to the central rotating shaft (207). The guide rod has a rack groove (206). The rack groove (206) is arranged along the extension direction of the guide rod. The gear meshes with the rack groove (206). The slider (205) slides in the rack groove (206). The middle part of the central rotating shaft (207) is connected to the piercing nail (209) to drive the piercing nail (209) to rotate. The two ends of the elastic element are respectively connected to the slider (205) and the guide rod.

3. The residue-free plastic film recycling equipment for plastic film recycling according to claim 2, characterized in that, The piercing nail (209) and the central rotating shaft (207) are connected by a bevel gear mechanism.

4. The residue-free film recycling equipment for plastic film recycling according to claim 2, characterized in that, Multiple puncture nails (209) are provided and arranged axially along the nail roller (208). The multiple puncture nails (209) near one end of the nail roller (208) are inclined towards one end of the nail roller (208), and the multiple puncture nails (209) near the other end of the nail roller (208) are inclined towards the other end of the nail roller (208). Part of the structure of the puncture nail (209) is disposed inside the nail roller (208) and is respectively connected to the central rotating shaft (207) and the nail roller (208) for transmission, so that the puncture nail (209) can rotate and extend.

5. The residue-free film recycling equipment for plastic film recycling according to claim 4, characterized in that, The puncture nail (209) includes a limiting section (210) and a puncture section (211); the bottom of the limiting section (210) is connected to the central rotating shaft (207) to drive the limiting section (210) to rotate, and the top of the limiting section (210) is slidably connected to the puncture section (211) so that the puncture section (211) can slide along the extension direction of the limiting section (210), and the puncture section (211) is threadedly connected to the nail roller (208).

6. The residue-free plastic film recycling equipment for plastic film recycling according to claim 1, characterized in that, The puncture nail (209) located outside the nail roller (208) has a cylindrical structure, and the end of the puncture nail (209) that contacts the mulch film has a hemispherical structure.

7. The residue-free plastic film recycling equipment for plastic film recycling according to claim 1, characterized in that, The guide rod has two parallel guide grooves (212), and the end of the nail roller (208) has two sliding columns, which are slidably connected to the guide grooves (212).

8. The residue-free plastic film recycling equipment for plastic film recycling according to claim 1, characterized in that, The first drive mechanism includes a second motor (104), a drive shaft (105), a drive wheel, a conveyor belt (106), and a driven wheel (203). The second motor (104) is mounted on the frame (100); Both ends of the drive shaft (105) are rotatably connected to the frame (100), and one end of the drive shaft (105) is fixedly connected to the output shaft of the second motor (104); The drive wheel is fixedly connected to the drive shaft (105); The driven wheel (203) is fixedly connected to the end of the guide frame (202); The driving wheel and the driven wheel (203) are connected by the conveyor belt (106) as well as by adjacent driven wheels (203).

9. The residue-free plastic film recycling equipment for plastic film recycling according to claim 1, characterized in that, The winding assembly includes a first motor (103) and a winding roller (102); the first motor (103) is mounted on the frame (100); both ends of the winding roller (102) are rotatably connected to the frame (100), and one end of the winding roller (102) is fixedly connected to the output shaft of the first motor (103). The winding roller (102) is used to fix the starting end of the mulch film and wind up the mulch film.

10. The residue-free plastic film recycling equipment for plastic film recycling according to claim 1, characterized in that, The frame (100) includes two support plates (101) connected to each other. The winding assembly, the first drive mechanism and the rotating recovery assembly (200) are all disposed between the two support plates (101). The support plates (101) have inclined side lines, and the rotating recovery assembly (200) is arranged along the side lines.

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