Plastic magic tape crushing and recycling device capable of circularly crushing

Abstract

The invention discloses a plastic hook-and-loop fastener crushing and recycling device capable of circularly crushing, and relates to the technical field of recycling devices.The plastic hook-and-loop fastener crushing and recycling device comprises a crushing bin, a control box is installed on one side of the crushing bin and used for controlling equipment, and a driving motor is installed on the other side of the crushing bin and used for driving the crushing bin to rotate; when the equipment runs, a plastic hook-and-loop fastener enters the discharging device from the feeding bin and is guided by the material guide block to fall into the telescopic plate between the first pressing plate and the second pressing plate, the hydraulic cylinder drives the pressing block to horizontally advance, the second pressing plate compresses the first spring, and materials are extruded and compacted; the crushed particles are sorted by transverse airflow of the fan in the discharging bin, fine particles are blown to a discharging slope and discharged through a discharging port, and coarse particles fall into a hopper-shaped blanking groove and return to the feeding bin through a circulating pipe under the positive pressure action of the fan to be crushed again, so that closed circulation is formed; and integrated efficient crushing of continuous compaction, forced feeding, airflow sorting and coarse grain self-circulation of the fluffy magic tape is realized.

Description

Technical Field

[0001] This invention relates to the field of recycling equipment technology, specifically to a recyclable plastic hook and loop fastener crushing and recycling device. Background Technology

[0002] Plastic hook and loop fasteners are used extensively in the clothing, medical, electronics, military, and logistics packaging industries. Their recycling has become a key focus of the plastics circular economy. However, the loose, low-density, and easily tangled structure of hook and loop fasteners presents traditional crushing equipment with the following unavoidable challenges in actual operation.

[0003] Existing equipment only has a simple funnel at the feeding end, allowing loose hook and loop fasteners to enter the crushing rollers directly in a naturally accumulated state, lacking a pre-compaction function. This results in excessively low material density and volume expansion, making it impossible to form a stable and continuous material column. Simultaneously, there is no active pressing mechanism at the top of the crushing chamber; the airflow generated by the high-speed rotation of the cutter rollers causes light materials to suspend or accumulate on the roller surface, preventing them from being forcibly fed into the meshing zone. This dual lack of "no compaction" and "no pressing" causes frequent slippage, jumping, and empty cutting during the crushing process, making it difficult to guarantee crushing efficiency and particle size uniformity. To address this, a hydraulically driven pre-compression mechanism is added to the feed end of the device. The two work together to effectively prevent material suspension and slippage, force shearing and crushing, significantly improve crushing efficiency and output particle size consistency, and meet the process requirements of subsequent melting and granulation. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a recyclable plastic hook and loop fastener crushing and recycling device, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a recyclable plastic hook and loop fastener crushing and recycling device, comprising a crushing chamber, a control box installed on one side of the crushing chamber for controlling the device, a drive motor installed on the other side of the crushing chamber, and two crushing rollers externally fitted to the output end of the drive motor. Gears are fitted to one end of each crushing roller, and the two gears mesh with each other for transmission. A feeding device is installed at the top of the crushing chamber, and a feeding hopper is installed at the top of the feeding device. A cover plate is installed at the top of the feeding hopper. The feeding device is used to discharge materials from inside the feeding hopper, and an outlet is provided on one side of the feeding device. A circulation device is installed at the bottom of the crushing chamber, and the circulation device is used to circulate materials from inside the feeding device back to the feeding hopper. A base is installed at the bottom of the circulation device, and the other end of the base supports the drive motor.

[0006] Preferably, the feeding device includes a compression component and a pressing component. Two sets of compression components are installed inside the feeding hopper, which is connected to the top of the crushing chamber via screws. The compression component is used to compress the material, and a feeding trough is provided outside the compression component. The pressing component is installed below the compression component and is used to cooperate with the compression component in pressing the material downwards. The feeding device has a dual-function compression and pressing component coaxially arranged on the top of the crushing chamber, so that the loose hook-and-loop fastener entering the feeding hopper is immediately compressed into a high-density material column by both sides simultaneously. At the same time, the pressing component actively pushes the material according to the compression rhythm, continuously forcing the compacted material column into the crushing roller meshing area. This eliminates the low density, material column breakage, and suspended empty cutting phenomena caused by the natural fall of the traditional hopper, achieving continuous and stable feeding, significantly improving crushing efficiency and particle size consistency, and reducing blockage and rework rates caused by material entanglement.

[0007] Preferably, the compression assembly includes a hydraulic cylinder, which is mounted outside the feeding hopper via a bracket. A pressure block is connected to the external extension end of the hydraulic cylinder. The pressure blocks are symmetrically distributed inside both ends of the feeding hopper. One end of each pressure block is connected to a first pressure plate, and the interior of the first pressure plate slides in contact with the surface of a sliding rod. The sliding rod is fixedly connected to the interior of a vertical plate, and four sliding rods are provided inside the vertical plate. A second pressure plate is provided between the vertical plate and the first pressure plate. The hydraulic cylinder drives the pressure blocks on both sides to synchronously push the first pressure plate to slide directionally along the four sliding rods, causing the second pressure plate to form a controllable compression chamber within the closed frame. This compresses the loose hook and loop fastener into a dense block in one go, eliminating density fluctuations caused by material rebound and ensuring consistent compactness of the material column entering the crushing zone each time. This prevents slippage and air cutting, improving crushing efficiency and particle size uniformity.

[0008] Preferably, a guide block is installed at the upper end of the feeding hopper. The surface of the guide block has a sloping structure, and the bottom of the pressing block has a sloping structure. Two T-shaped grooves are opened at one end of the pressing block. The T-shaped groove at one end of the pressing block is slidably connected to one side of the first pressing plate. Two strip-shaped protrusions are provided on one side of the first pressing plate, and the cross-section of the two strip-shaped protrusions on one side of the first pressing plate matches the shape of the T-shaped groove at one end of the pressing block. A first spring is provided between the upright plate and the second pressing plate. The guide block and the pressing block are on the same sloping surface, so that the loose hook and loop fasteners naturally converge and pre-press along the slope. The T-shaped groove-strip protrusion precision sliding pair ensures that the pressing block and the first pressing plate move synchronously without deviation. The compression process is smooth, and the first spring instantly pushes open the second pressing plate during the return stroke, realizing rapid unloading and reset, avoiding material retention and pressing plate jamming, ensuring accurate and repeated compression-release cycle, improving continuous feeding stability and reducing energy consumption.

[0009] Preferably, the pressing assembly includes a lifting plate, the top of which is fixedly connected to the upright plate, both ends of which slide in contact with the pressing block, a telescopic plate inside the lifting plate, the outer wall of which slides in contact with the inside of the lifting plate, a third spring inside the lifting plate, connecting rods on both sides of the lifting plate, the connecting rods being tightly fitted and slidingly in contact with the sides of the lifting plate, and a strip-shaped slot inside the lifting plate, which slides in contact with a positioning block, the positioning block being installed on both sides of the first pressing plate; the lifting plate and the telescopic plate form a retractable material-bearing platform, during compression, the pressing block synchronously drives the lifting plate to move downward, actively pushing the compacted material block above the crushing roller, preventing the material column from being suspended or rebounding; during the return stroke, the third spring instantly pops out the telescopic plate to re-bear the material, and the positioning block-strip-shaped slot guide ensures no deviation throughout the entire process, realizing the three-step integration of compression, downward movement, and reset, eliminating manual assistance in pressing action, ensuring that the loose hook and loop fasteners continuously, stably, and densely enter the crushing meshing zone, improving crushing efficiency and reducing the risk of jamming.

[0010] Preferably, the telescopic plate is provided with locking blocks inside, which are symmetrically distributed on both sides of the telescopic plate. A second spring is provided at one end of the locking block. The locking block slides in contact with the inside of the telescopic plate and engages with the slots on both sides of the lifting plate. Each side of the lifting plate is provided with four slots. Both sides of the locking block have a beveled structure and are asymmetrical. The locking block is driven by the second spring inside the telescopic plate and engages with the multiple slots on both sides of the lifting plate instantly, locking the telescopic plate. The asymmetrical double bevels allow the locking block to slide out and unlock with just a light push from the connecting rod during the return stroke of the pressing block. The third spring instantly pops out the telescopic plate to reload the material, realizing fully automatic switching of compression-unloading-reset, avoiding manual adjustment, ensuring that the loose hook and loop belt is always stably supported and continuously fed into the crushing zone, improving cycle accuracy and crushing efficiency.

[0011] Preferably, the circulation mechanism includes a discharge bin, inside which a guide plate is installed, and below the guide plate is a discharge slope. One end of the bottom of the discharge slope is connected to the discharge port. An air duct is installed on one side of the discharge bin, and one side of the air duct is connected to the interior of the discharge bin. A fan is installed on one side of the discharge bin. The guide plate and the discharge slope inside the discharge bin form a continuous flow channel. The fan forms a transverse airflow on the side wall of the channel through the air duct. When the crushed particles fall, they are immediately separated by the airflow according to their particle size: light fine powder is blown toward the discharge slope and discharged smoothly, while heavy coarse particles continue to fall, achieving coarse-fine separation in one pass, avoiding coarse-fine mixing and clogging of the outlet, reducing manual screening, and improving the continuity of discharge and the efficiency of subsequent circulating crushing.

[0012] Preferably, the bottom of the discharge hopper is provided with two discharge troughs. The discharge troughs have a bucket-shaped internal structure. One side of the bottom of the discharge trough is connected to the blower, and the other side of the discharge trough is connected to one end of the bottom of the circulation pipe. One end of the top of the circulation pipe is connected to the feed hopper. The bucket-shaped structure of the discharge troughs allows the coarse particles that fall after being separated by airflow to naturally converge to the bottom and be instantly sent back to the feed hopper along the circulation pipe under the positive pressure of the blower, realizing closed-loop circulation and re-crushing of coarse particles. The symmetrical arrangement of the two troughs ensures uniform airflow distribution and continuous conveying, avoids coarse particle accumulation or backflow dead zones, and ensures that plastic hook and loop fasteners can be gradually crushed to a smaller particle size with one feeding, reducing manual intervention and improving overall recycling efficiency.

[0013] This invention provides a recyclable plastic hook and loop fastener recycling device. It offers the following advantages: When the equipment is running, the plastic hook and loop fastener enters the feeding device from the feeding hopper, is guided by the guide block and falls into the telescopic plate between the first and second pressure plates. The hydraulic cylinder drives the pressure block to advance horizontally, causing the second pressure plate to compress the first spring and compact the material. At the same time, the pressure block pushes the telescopic plate back into the lifting plate. The locking block engages with the groove of the lifting plate under the action of the second spring, and the third spring stores energy. When the hydraulic cylinder returns, the pressure block and the first pressure plate are reset. The first spring instantly pushes the second pressure plate to unload the compacted material block above the crushing roller. As the pressure block continues to retreat, the limit block drives the connecting rod to move the locking block. As the inclined plane is released from its lock, the third spring quickly ejects the telescopic plate to reload the material, and the inclined plane of the pressure block simultaneously presses down on the lifting plate, continuously applying vertical force to the material on the roller surface to ensure that the high-density material column stably enters the meshing area of ​​the double crushing rollers to complete shearing and crushing. After crushing, the particles are sorted by the horizontal airflow of the fan in the discharge bin. Fine particles are blown to the discharge slope and discharged through the discharge port, while coarse particles fall into the bucket-shaped discharge trough. Under the positive pressure of the fan, they return to the feed bin through the circulation pipe for further crushing, forming a closed-loop circulation. This achieves integrated and efficient crushing of loose hook and loop belts, continuous compaction, forced feeding, airflow sorting, and coarse particle self-circulation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view structural diagram of the present invention; Figure 3 This is a side view of the structure of the present invention; Figure 4 This is a schematic diagram of the internal structure of the present invention; Figure 5 This is a schematic diagram of the crushing roller structure of the present invention; Figure 6 This is a schematic diagram of the feeding device of the present invention; Figure 7 This is a schematic diagram of the material guide block structure of the present invention; Figure 8 This is a schematic diagram of the third spring structure of the present invention.

[0015] In the diagram, 1. Crushing bin; 2. Control box; 3. Feeding device; 301. Feeding bin; 302. Feeding chute; 303. Pressing block; 304. Hydraulic cylinder; 305. First pressing plate; 306. Sliding rod; 307. Second pressing plate; 308. Vertical plate; 309. Lifting plate; 310. First spring; 311. Connecting rod; 312. Positioning block; 313. Telescopic plate; 314. Locking block; 315. Second spring; 316. Third spring; 317. Guide block; 4. Feeding bin; 5. Drive motor; 6. Crushing roller; 7. Gear; 8. Circulation device; 801. Discharge bin; 802. Guide plate; 803. Discharge slope; 804. Fan; 805. Air duct; 806. Drop chute; 807. Blower; 808. Circulation pipe; 9. Discharge port; 10. Base. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0017] Example 1: Please refer to Figure 1-8 This invention provides a technical solution: a recyclable plastic hook and loop fastener crushing and recycling device, including a crushing chamber 1, a control box 2 installed on one side of the crushing chamber 1 for controlling the device, a drive motor 5 installed on the other side of the crushing chamber 1, a crushing roller 6 externally fitted on the output end of the drive motor 5, two crushing rollers 6 are provided, a gear 7 is fitted on one end of the two crushing rollers 6, the two gears 7 mesh with each other for transmission, a feeding device 3 is provided on the top of the crushing chamber 1, a feeding bin 4 is installed on the top of the feeding device 3, a cover plate is provided on the top of the feeding bin 4, the feeding device is used to feed materials into the feeding bin 4, and a discharge port 9 is provided on one side of the feeding device, a circulation device 8 is provided at the bottom of the crushing chamber 1, the circulation device 8 is used to circulate materials from the feeding device to the feeding bin 4, and a base 10 is installed at the bottom of the circulation device 8, the other end of the base 10 is used to support the drive motor 5; This embodiment integrates the crushing chamber 1, the feeding device 3, and the circulation device 8, so that the fluffy plastic hook and loop fasteners are first continuously compacted into a stable column before entering the meshing area of ​​the double crushing rollers 6. This eliminates the slippage and empty cutting phenomena caused by the "no compaction, no material pressure" of traditional equipment, and achieves forced shearing and crushing, which significantly improves crushing efficiency and particle size uniformity. After crushing, the material is sorted by airflow, with fine particles being discharged directly and coarse particles being sent back to the feeding chamber 4 for crushing again under positive pressure, forming a closed-loop circulation. This ensures that the material can be fully crushed to the particle size required for subsequent melting and granulation with a single feeding, and completely solves the problem of incomplete crushing and the need for repeated manual feeding caused by low density and easy entanglement.

[0018] Example 2: Please refer to Figure 1-8This invention provides a technical solution: the feeding device includes a compression component and a pressing component. Two sets of compression components are provided, both installed inside the feeding hopper 301. The feeding hopper 301 is connected to the top of the crushing chamber 1 by screws. The compression component is used to compress the material. A feeding trough 302 is provided outside the compression component. The pressing component is installed below the compression component and is used to cooperate with the compression component to press the material down. The compression component includes a hydraulic cylinder 304, which is installed outside the feeding hopper 301 by a bracket. A pressure block 303 is connected to the external extension end of the hydraulic cylinder 304. The pressure blocks 303 are symmetrically distributed inside both ends of the feeding hopper 301. One end of each pressure block 303 is connected to a first pressure plate 305, and the interior of the first pressure plate 305 slides in contact with the surface of a sliding rod 306. The sliding rod 306 is fixedly connected to the inside of the upright plate 308. Four sliding rods 306 are provided inside the upright plate 308. A second pressure plate 307 is provided between the upright plate 308 and the first pressure plate 305. A guide block 317 is installed at the upper end of the feeding bin 301. The surface of the guide block 317 has a sloping structure. The bottom of the pressure block 303 has a sloping structure, and two T-shaped grooves are formed at one end of the pressure block 303. The T-shaped grooves at one end of the pressure block 303 are connected to the first pressure plate 305. The first pressure plate 305 has two strip-shaped protruding structures on one side, and the cross-sections of the two strip-shaped protruding structures on one side of the first pressure plate 305 match the T-shaped groove shape at one end of the pressure block 303. A first spring 310 is provided between the upright plate 308 and the second pressure plate 307. The lowering assembly includes a lifting plate 309, the top of which is fixedly connected to the upright plate 308. Both ends of the lifting plate 309 are in sliding contact with the pressure block 303. A telescopic plate 313 is provided inside the lifting plate 309, and the outer wall of the telescopic plate 313 is in sliding contact with the inside of the lifting plate 309. A third spring 316 is provided inside the lifting plate 309. Connecting rods 311 are provided on both sides of the lifting plate 309, and the connecting rods 311 are in close contact with both sides of the lifting plate 309. A strip-shaped slot is provided inside the lifting plate 309, and the inside of the lifting plate 309 is in sliding contact with the positioning block 312. The positioning block 312 is installed on the first... Both sides of the pressure plate 305; the telescopic plate 313 is provided with a locking block 314 inside, the locking block 314 is symmetrically distributed on both sides of the inside of the telescopic plate 313, and a second spring 315 is provided at one end of the locking block 314. The locking block 314 slides in contact with the inside of the telescopic plate 313. The locking block 314 engages with the slots on both sides of the lifting plate 309. The lifting plate 309 is provided with four slots on both sides. The locking block 314 has a sloping structure on both sides and the locking block 314 has an asymmetrical shape on both sides. In this embodiment, during material feeding, the material falls through the guide block 317 onto the telescopic plate 313 between the first pressure plate 305 and the second pressure plate 307. Then, under the action of the hydraulic cylinder 304, the pressure block 303 moves horizontally, causing the second pressure plate 307 to compress the first spring 310. Simultaneously, the material between the first and second pressure plates 305 is compressed and compacted. The pressure block 303 pushes the telescopic plate 313 to retract into the lifting plate 309, and the locking block 314 inside the telescopic plate 313 engages with the slots on both sides of the lifting plate 309, allowing the telescopic plate 313 to remain inside the lifting plate 309 and compress the third spring 316. The compressed material remains on the surface of the lifting plate 309. When the hydraulic cylinder 304 retracts, it causes the pressure block 303 and the first pressure plate 305 to move back and forth. Under the action of the first spring 310, the second pressure plate 307 is pushed, which in turn pushes the compacted material on the surface of the lifting plate 309 down, and then it falls above the crushing roller 6 to be crushed. As the hydraulic cylinder 304 continues to contract, the limiting blocks on both sides of the pressure block 303 can drive the connecting rod 311 to move, and then one end of the connecting rod 311 can contact one side of the locking block 314. The inclined surface on one side of the locking block 314 can force the locking block 314 to contract, and then the locking block 314 releases the limiting of the telescopic plate 313. Under the action of the third spring 316, the telescopic plate 313 can pop out again to receive the material. In addition, when the hydraulic cylinder 304 extends, the inclined surface of the pressure block 303 can force the lifting plate 309 to move downward. When the lifting plate 309 moves downward, it can automatically press down the material above the crushing roller 6.

[0019] Example 3: Please refer to Figure 1-8 This invention provides a technical solution: the circulation mechanism includes a discharge bin 801, a guide plate 802 installed inside the discharge bin 801, a discharge slope 803 below the guide plate 802, one end of the bottom of the discharge slope 803 communicating with the discharge port 9, an air duct 805 installed on one side of the discharge bin 801, one side of the air duct 805 communicating with the interior of the discharge bin 801, and a fan 804 installed on one side of the discharge bin 801; two dropping troughs 806 are provided at the bottom of the discharge bin 801, the dropping troughs 806 have a bucket-shaped structure inside, one side of the bottom of the dropping troughs 806 communicating with a fan 807, and the other side of the dropping troughs 806 communicating with one end of the bottom of a circulation pipe 808, and one end of the top of the circulation pipe 808 communicating with a feeding bin 4; In this embodiment, the crusher crushes plastic hook and loop fasteners by feeding them into the feed hopper 4, which then falls into the feeding device 3. The feeding device 3 then drops the material into the crushing hopper 1. The drive motor 5 drives two crushing rollers 6 to crush the plastic hook and loop fasteners. The crushed material falls from the crushing hopper 1, and under the action of the fan 804, external air is blown into the air duct 805. Airflow is then blown out from one side of the air duct 805. When the material falls, the smaller crushed particles, which are lighter, are blown by the airflow to the discharge slope 803 on one side and discharged through the discharge port 9. The larger crushed particles, which are heavier, fall into the feeding trough 806 under the action of gravity. Then, under the action of the fan 807, they are blown into the circulation pipe 808. Under the action of the airflow from the fan 807, the larger crushed particles are conveyed under positive pressure and discharged from the top of the circulation pipe 808, thus circulating and crushing again, which is beneficial for thorough crushing.

[0020] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0021] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A recyclable plastic hook and loop fastener crushing and recycling device, comprising a crushing chamber (1), characterized in that: It also includes a crushing chamber (1), a control box (2) is installed on one side of the crushing chamber (1), the control box (2) is used to control the equipment, a drive motor (5) is installed on the other side of the crushing chamber (1), a crushing roller (6) is fitted on the outside of the output end of the drive motor (5), there are two crushing rollers (6), a gear (7) is fitted on one end of the two crushing rollers (6), the two gears (7) mesh with each other for transmission, a feeding device (3) is provided on the top of the crushing chamber (1), a feeding hopper (4) is installed on the top of the feeding device (3), a cover plate is provided on the top of the feeding hopper (4), the feeding device is used to feed the material inside the feeding hopper (4), and a discharge port (9) is provided on one side of the feeding device, a circulation device (8) is provided at the bottom of the crushing chamber (1), the circulation device (8) is used to circulate the material inside the feeding device to the feeding hopper (4), and a base (10) is installed at the bottom of the circulation device (8), the other end of the base (10) is used to support the drive motor (5).

2. The recyclable plastic hook and loop fastener crushing and recycling device according to claim 1, characterized in that: The feeding device includes a compression component and a pressing component. There are two sets of compression components, both of which are installed inside the feeding hopper (301). The feeding hopper (301) is connected to the top of the crushing hopper (1) by screws. The compression component is used to compress the material. A feeding trough (302) is provided outside the compression component. The pressing component is installed below the compression component and is used to cooperate with the compression component to press the material down.

3. The recyclable plastic hook and loop fastener crushing and recycling device according to claim 2, characterized in that: The compression assembly includes a hydraulic cylinder (304), which is mounted on the outside of the feeding hopper (301) via a bracket. A pressure block (303) is connected to the outside of the telescopic end of the hydraulic cylinder (304). The pressure blocks (303) are symmetrically distributed inside both ends of the feeding hopper (301). One end of the pressure block (303) is connected to a first pressure plate (305), and the inside of the first pressure plate (305) is in sliding contact with the surface of a slide rod (306). The slide rod (306) is fixedly connected to the inside of a vertical plate (308). Four slide rods (306) are provided inside the vertical plate (308), and a second pressure plate (307) is provided between the vertical plate (308) and the first pressure plate (305).

4. The recyclable plastic hook and loop fastener crushing and recycling device according to claim 3, characterized in that: The upper end of the feeding hopper (301) is equipped with a guide block (317), the surface of the guide block (317) is sloping, the bottom of the pressure block (303) is sloping, and one end of the pressure block (303) has two T-shaped grooves. The T-shaped groove at one end of the pressure block (303) is slidably connected to one side of the first pressure plate (305). Two strip-shaped protrusions are provided on one side of the first pressure plate (305), and the cross-section of the two strip-shaped protrusions on one side of the first pressure plate (305) matches the shape of the T-shaped groove at one end of the pressure block (303). A first spring (310) is provided between the upright plate (308) and the second pressure plate (307).

5. The recyclable plastic hook and loop fastener crushing and recycling device according to claim 4, characterized in that: The pressing assembly includes a lifting plate (309), the top of which is fixedly connected to the upright plate (308), and both ends of which are in sliding contact with the pressure block (303). A telescopic plate (313) is provided inside the lifting plate (309), and the outer wall of the telescopic plate (313) is in sliding contact with the inside of the lifting plate (309). A third spring (316) is provided inside the lifting plate (309), and connecting rods (311) are provided on both sides of the lifting plate (309). The connecting rods (311) are in close contact with both sides of the lifting plate (309). A strip-shaped hole is provided inside the lifting plate (309), and the inside of the lifting plate (309) is in sliding contact with the positioning block (312). The positioning block (312) is installed on both sides of the first pressure plate (305).

6. The recyclable plastic hook and loop fastener crushing and recycling device according to claim 5, characterized in that: The telescopic plate (313) is provided with a locking block (314) inside. The locking block (314) is symmetrically distributed on both sides inside the telescopic plate (313), and a second spring (315) is provided at one end of the locking block (314). The locking block (314) slides in contact with the inside of the telescopic plate (313). The locking block (314) engages with the slots on both sides of the lifting plate (309). The lifting plate (309) has four slots on both sides. The locking block (314) has a sloping structure on both sides, and the locking block (314) has an asymmetrical shape on both sides.

7. The recyclable plastic hook and loop fastener crushing and recycling device according to claim 6, characterized in that: The circulation mechanism includes a discharge bin (801), inside which a guide plate (802) is installed. Below the guide plate (802) is a discharge slope (803), one end of which is connected to the discharge port (9). A duct (805) is installed on one side of the discharge bin (801), one side of which is connected to the interior of the discharge bin (801). A fan (804) is installed on one side of the discharge bin (801).

8. The recyclable plastic hook and loop fastener crushing and recycling device according to claim 7, characterized in that: The discharge hopper (801) is provided with two discharge troughs (806) at the bottom. The discharge troughs (806) have a bucket-shaped structure inside. One side of the bottom of the discharge troughs (806) is connected to the blower (807), and the other side of the discharge troughs (806) is connected to one end of the bottom of the circulation pipe (808). One end of the top of the circulation pipe (808) is connected to the feed hopper (4).

Images