A plastic bag shredding device for recycling waste plastic bags

Abstract

The present invention relates to the technical field of waste plastic bag recycling, and provides a plastic bag shredding device for recycling waste plastic bags, comprising a shredding box, wherein the top of the shredding box is fixedly connected with a feed port, a shredding assembly is arranged at the top of the shredding box, and a shredding structure is arranged at the bottom of the shredding assembly inside the shredding box, wherein the shredding structure comprises a first shredding assembly, a second shredding assembly, a limiting material guiding assembly and a third shredding assembly, and the second shredding assembly is located at the top and the bottom of the first shredding assembly; in the present invention, after the plastic bag is shredded by the shredding assembly, it falls onto the second cutter at the top, and the cylinder is started, and the cylinder pushes the first connecting blocks to approach each other, and at the same time, the first rack cooperates with the second rack, so that the first push-pull plate starts to move to the side away from each other, so that the first push-pull plate drives the second cutter to separate from each other, and through the reciprocating movement of the push rod, the second cutter and the first cutter move alternately to realize continuous discharge and continuous shredding.

Description

Technical Field

[0001] The invention relates to the technical field of waste plastic bag recycling, in particular to a plastic bag shredding device for recycling waste plastic bags. Background Art

[0002] Plastic bags are a common daily necessity used to hold other items. They can be found in supermarkets, traditional markets, department stores, warehouses, garbage dumps, etc. As plastic bags are used in many occasions, the amount of waste plastic bags also increases. In the process of recycling waste plastic bags, a shredder is used. The plastic bag shredder is a mechanical device specially designed to cut or break plastic bags and other plastic products into smaller particles, fragments or strips. This device plays an important role in the fields of plastic recycling, waste disposal and resource reuse.

[0003] For example, the invention with the publication number CN113232199A relates to the technical field of plastic bag recycling, and discloses a comprehensive treatment system for recycling and reusing waste plastic bags, including a crushing box and a cleaning box, wherein a crushing mechanism is arranged inside the crushing box, and a puncturing mechanism is arranged at the lower end of the crushing mechanism, and the puncturing mechanism includes a puncturing device and a guide device, and the puncturing devices are movably mounted on both sides of the guide device, and an electric telescopic rod is arranged on the top of the guide device, and a stirring mechanism is arranged inside the cleaning box, and a conveying area is arranged between the crushing box and the cleaning box. The integrated crushing and cleaning equipment for plastic bag recycling, by arranging a puncturing mechanism under the crushing mechanism, punctures the uncut entangled plastic bags, so that the residual sewage in the plastic bags can flow out, and then the plastic film is conveyed by rotating the conveying screw, avoiding manual operation, realizing the integration of crushing and cleaning, and improving work efficiency, and the arc-shaped protrusions on the surface of the conveying screw increase the extrusion pressure to squeeze out the water in the plastic film.

[0004] When used in the above-mentioned prior art, the plastic bags are added to the crushing box and crushed. The crushed plastic bags fall onto the puncturing mechanism, puncturing the uncut entangled plastic bags, and then the plastic bags are conveyed to the cleaning box for cleaning by rotating the conveying screw. However, the plastic bags are soft and elastic, and the puncturing structure achieves puncture by staggered interlacing. When the pointed rods are separated, some plastic bags will leak out through the gaps between the pointed rods, resulting in incomplete puncture. During puncture, the plastic bags will be wrapped around the pointed rods after puncture and will be suspended and moved with the movement of the pointed rods. Therefore, there are more and more plastic bags on the puncturing mechanism, which eventually makes the plastic bags difficult to discharge. In addition, there is liquid in the plastic bags. When the conveying screw is conveyed, the plastic bags will adhere to the outer wall of the conveying screw and accumulate in the conveying channel, which will also make the plastic bags difficult to discharge. Summary of the invention

[0005] The purpose of the present invention is to solve the problem in the prior art that the plastic bag is soft and elastic, and the puncturing structure achieves puncture by staggered interlacing. When the pointed rods are separated, part of the plastic bag will leak out through the gaps between the pointed rods, resulting in incomplete puncture. During puncture, the plastic bag will be sleeved on the pointed rods after puncture and will be suspended and moved with the movement of the pointed rods. Therefore, there are more and more plastic bags on the puncturing mechanism, which eventually makes the plastic bags difficult to discharge. In addition, there is liquid in the plastic bag. When the conveying screw is conveying, the plastic bag will adhere to the outer wall of the conveying screw and accumulate in the conveying channel, which will also make the plastic bag difficult to discharge.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a plastic bag shredding device for recycling waste plastic bags, comprising a shredding box, the top of which is fixedly connected with a feed port, the top of the shredding box is provided with a shredding assembly, the bottom of the shredding box is provided with a shredding structure, the shredding structure comprises a first shredding assembly, a second shredding assembly, a limiting material guiding assembly and a third shredding assembly, the second shredding assembly is located at the top and bottom of the first shredding assembly, the bottom end of the shredding box is fixedly connected with a collecting box, the top of the collecting box is provided with a conveying assembly, the first shredding assembly comprises a protective box, the protective box is fixed at the middle of both sides of the bottom end of the shredding box, the middle of the protective box away from the shredding box is fixedly connected with a cylinder, and the end of the cylinder close to the shredding box is fixedly connected with an air rod.

[0007] As a preferred embodiment, the end of the air rod away from the cylinder is fixedly connected to a push rod, both sides of the push rod are fixedly connected to support limit blocks, the push rod and the support limit blocks penetrate the crushing box and are slidably connected to the crushing box, the top and bottom ends of the push rod are fixedly connected to a first rack, the end of the push rod away from the cylinder is fixedly connected to a first connecting block, and the side of the first connecting block away from the push rod is fixedly connected to a first cutter, when the cylinder is started, the cylinder drives the air rod to extend and retract, the air rod drives the push rod to move, the push rod drives the first rack and the first cutter to reciprocate, and the first cutter cuts the falling plastic bag.

[0008] As a preferred embodiment, the second shredding assembly includes a first push-pull plate, which is located at the top and bottom ends of the push rod, and the first push-pull plate penetrates the crushing box and is slidably connected to the crushing box. Support limit grooves are provided on both sides of the first push-pull plate, and the support limit grooves are slidably connected to the crushing box. One end of the first push-pull plate located inside the crushing box is fixedly connected to a second connecting block, and the second connecting blocks are fixedly connected to a second cutter on one side close to each other. The first rack drives the second gear to rotate, and the second gear drives the first push-pull plate to move, and the first push-pull plate drives the second cutter to reciprocate, so that the first cutter and the second cutter move up and down alternately, so that multi-layer cutting can be achieved through the cutting of the second cutter and the first cutter.

[0009] As a preferred embodiment, a second rack is fixedly connected to a side of the first push-pull plate close to the push rod, a second gear is meshed with a side of the second rack close to the push rod, a side of the second gear away from the first push-pull plate is meshed with the first rack, a support rod is rotatably connected to the middle part of the second gear, the support rod is fixedly connected to the crushing box, the support rod supports the second gear, and the first rack drives the first push-pull plate to reciprocate through the meshing of the second gear to achieve staggered motion.

[0010] As a preferred embodiment, the limiting material guide assembly includes a support and guide box, the support and guide box is fixed inside the crushing box and located at the bottom end of the crushing assembly, the top of the support and guide box is fixedly connected with a guide frame, the guide frame is fixedly connected to the crushing box, and support scraping grooves are provided on both sides of the middle of the support and guide box, and the support scraping grooves are slidably connected to the second cutter and the first cutter. By setting the support and guide assembly, the guide frame can guide the crushed plastic bags into the support and guide box, and drop them to the end where the second cutter is close to each other, and the support scraping grooves are provided on the support and guide box, which can support and limit the second cutter and the first cutter, and after the second cutter and the first cutter are separated from each other, they will be tightly attached to the support scraping grooves, and the support scraping grooves can scrape off the plastic bags adhered to the second cutter and the first cutter, thereby facilitating material discharge and cleaning of the plastic bags on the second cutter and the first cutter.

[0011] As a preferred embodiment, the third shredding assembly includes a second push-pull plate, the top end of the second push-pull plate is rotatably connected to the first connecting head, the top end of the first connecting head is fixedly connected to the first push-pull plate at the bottom end, the bottom end of the second push-pull plate is rotatably connected to the second connecting head, the bottom end of the second connecting head is fixedly connected to the third connecting block, and the bottom end of the third connecting block is fixedly connected to the third cutter. When the first push-pull plate moves, it drives the first connecting head to move, the first connecting head pushes and pulls the second push-pull plate, the movement of the second push-pull plate drives the second connecting head to move up and down, the second connecting head drives the third connecting block to move, the third connecting block drives the third cutter to move up and down, and the third cutter shreds the plastic bags on the support frame again.

[0012] As a preferred embodiment, a discharge port is opened on one side of the bottom end of the collection box, and a guide plate is fixedly connected to the bottom end of the collection box, and the conveying assembly includes a second motor, the second motor is arranged at the top of the front side of the discharge port, and the second motor is transmission-connected to a supporting rotating rod on one side close to the collection box, the supporting rotating rod passes through the collection box and is rotatably connected to the collection box, and the supporting rotating rod is four, and two are in a group, and the two groups are close to each other. One end of the supporting rotating rod close to the second motor is fixedly connected to a rotating wheel, and the middle part of the rotating wheel is transmission-connected to a belt, and the middle part of the supporting rotating rod is fixedly connected to a rotating roller, and the outer wall of the rotating roller is transmission-connected to a conveyor belt, and after the plastic bag falls onto the conveyor belt, the plastic bag is cut and crushed and falls onto the conveyor belt, the second motor is started, the second motor drives the supporting rotating rod to rotate, the supporting rotating rod drives the rotating wheel to rotate, and the rotating wheel drives the belt to rotate, so that the supporting rotating rod on the other side rotates, and at this time, the rotating roller rotates to drive the conveyor belt to rotate to transport the fallen crushed plastic bags to the support frame.

[0013] As a preferred embodiment, a support frame is provided on the side of the conveyor belts away from each other, the support frame is fixedly connected to the collection box, and limiting plates are fixedly connected to both sides of the top end of the support frame. A first limiting groove is provided in the middle of the limiting plate, and the first limiting groove is slidably connected to the third cutter. Through the continuous conveyance of the conveyor belt, the plastic bags on the support frame are squeezed and moved, thereby preventing the plastic bags from staying on the support frame. The plastic bags are finally completely crushed by the cutting of the third cutter and then squeezed and dropped into the collection box for discharge. The crushed plastic bags adhering to the third cutter are scraped off by the limiting plate.

[0014] As a preferred embodiment, a fixing rod is fixedly connected to a side of the bottom end of the support frame close to the conveyor belt, a fixing plate is fixedly connected to the bottom end of the fixing rod, a brush is fixedly connected to a side of the fixing plate close to the conveyor belt, and the brush is slidably connected to the conveyor belt. By arranging the brush, when the conveyor belt transports crushed plastic bags, some crushed plastic bags will adhere to the conveyor belt, and the brush can clean these plastic bags, making it easier for the plastic bags to fall into the collection box and avoiding blockage of the conveyor belt.

[0015] As a preferred embodiment, the shredding assembly includes a shredding roller, which is rotatably connected to the top end of a shredding box, one end of the shredding roller is fixedly connected to a first rotating rod, the first rotating rod penetrates the shredding box and is rotatably connected to the shredding box, one end of the first rotating rod located outside the shredding box is fixedly connected to a first gear, and one end of the first rotating rod located at the first gear away from the shredding roller is transmission-connected to a first motor. The staff adds the waste plastic bag into the shredding box through the feed port and starts the first motor. The first motor drives the first rotating rod to rotate, and the first rotating rod drives the first rotating rod on the other side to rotate through the first gear. At this time, the shredding roller rotates to shred the waste plastic bag, and the shredded plastic bag falls onto the guide frame, and then the shredding work is achieved through the shredding structure.

[0016] The beneficial effects of the present invention are as follows:

[0017] In the present invention, after the plastic bag is crushed by the crushing assembly, it falls onto the second cutter at the top, and the cylinder is started. The cylinder pushes the first connecting blocks to move closer to each other. At the same time, the first rack cooperates with the second rack, so that the first push-pull plate begins to move to the side away from each other. Therefore, the first push-pull plate drives the second cutter to separate from each other. Through the reciprocating movement of the push rod, the second cutter and the first cutter move alternately to achieve continuous discharge and continuous shredding.

[0018] In the present invention, by setting a support guide assembly, the guide frame can guide the crushed plastic bags into the support guide box, and drop them to the end where the second cutter is close to each other, and a support scraper groove is set on the support guide box, which can support and limit the second cutter and the first cutter, and after the second cutter and the first cutter are separated from each other, they will be tightly attached to the support scraper groove, and the support scraper groove can scrape off the plastic bags adhered to the second cutter and the first cutter, thereby facilitating the discharge of materials and cleaning the plastic bags on the second cutter and the first cutter.

[0019] In the present invention, after the plastic bag falls onto the conveyor belt, the second motor is started to drive the rotating roller to rotate, and the rotating roller drives the conveyor belt to rotate. The conveyor belt transports the crushed plastic bags and finally transports them to both sides of the bottom end of the support frame. By setting a second crushing assembly, the second push-pull plate is driven to move when the first push-pull plate moves, so that the third cutter moves up and down, and the third cutter cuts the plastic bags on the support frame again. Through the continuous transportation of the conveyor belt, the plastic bags on the support frame are squeezed and moved, thereby preventing the plastic bags from staying on the support frame. Through the cutting of the third cutter, the plastic bags are finally completely crushed, and then squeezed and dropped into the collection box for discharge. The crushed plastic bags adhering to the third cutter are scraped off by the limiting plate.

[0020] In the present invention, by arranging the brush, when the conveyor belt conveys the crushed plastic bags, some crushed plastic bags will adhere to the conveyor belt, and the brush can clean these plastic bags, so that the plastic bags fall into the collection box and avoid clogging the conveyor belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a plastic bag shredding device for recycling waste plastic bags provided by the present invention;

[0022] Figure 2 A schematic cross-sectional structure diagram of a plastic bag shredding device for recycling waste plastic bags provided by the present invention;

[0023] Figure 3 A schematic diagram of the structure of a pulverizing component of a plastic bag shredding device for recycling waste plastic bags provided by the present invention;

[0024] Figure 4 A schematic diagram of the shredding structure of a plastic bag shredding device for recycling waste plastic bags provided by the present invention;

[0025] Figure 5 A schematic diagram of the structure of a shredding assembly of a plastic bag shredding device for recycling waste plastic bags provided by the present invention;

[0026] Figure 6 A schematic diagram of the structure of a third shredding component of a plastic bag shredding device for recycling waste plastic bags provided by the present invention;

[0027] Figure 7 A schematic diagram of the structure of a limiting material guide component of a plastic bag shredding device for recycling waste plastic bags provided by the present invention;

[0028] Figure 8 A schematic diagram of the structure of a conveying component of a plastic bag shredding device for recycling waste plastic bags provided by the present invention;

[0029] Legend:

[0030] 1. Crushing box; 11. Feeding port; 21. First motor; 22. First rotating rod; 23. First gear; 24. Crushing roller; 31. Protective box; 311. Cylinder; 312. Air rod; 313. Push rod; 314. Support stop block; 315. First rack; 316. First connecting block; 317. First cutter; 32. First push-pull plate; 321. Support stop groove; 322. Second connecting block; 323. Second cutter; 324. Second gear; 325. Support rod; 326. Second rack; 33. Support guide Box; 331, guide frame; 332, support scraper groove; 34, second push-pull plate; 341, first connector; 342, second connector; 343, third connector block; 344, third cutter; 4, collection box; 41, discharge port; 42, guide plate; 51, second motor; 511, support rotating rod; 512, rotating wheel; 513, belt; 514, rotating roller; 515, conveyor belt; 52, support frame; 521, limit plate; 522, first limit groove; 53, fixing rod; 531, fixing plate; 532, brush. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] See also Figure 1 - Figure 8 The present invention provides a technical solution: a plastic bag shredding device for recycling waste plastic bags, comprising a shredding box 1, a feeding port 11 is fixedly connected to the top of the shredding box 1, a shredding assembly is arranged at the top of the shredding box 1, a shredding structure is arranged at the bottom of the shredding assembly inside the shredding box 1, the shredding structure comprises a first shredding assembly, a second shredding assembly, a limiting material guiding assembly and a third shredding assembly, the second shredding assembly is located at the top and bottom of the first shredding assembly, a collecting box 4 is fixedly connected to the bottom end of the shredding box 1, a conveying assembly is arranged at the top of the collecting box 4, the first shredding assembly comprises a protective box 31, the protective box 31 is fixed to the middle of both sides of the bottom end of the shredding box 1, a cylinder 311 is fixedly connected to the middle of the side away from the shredding box 1 inside the protective box 31, and a gas rod 312 is fixedly connected to the end of the cylinder 311 close to the shredding box 1.

[0033] like Figure 1 - Figure 8As shown, one end of the air rod 312 away from the air cylinder 311 is fixedly connected to a push rod 313, and both sides of the push rod 313 are fixedly connected to support limit blocks 314. The push rod 313 and the support limit blocks 314 penetrate the crushing box 1 and are slidably connected to the crushing box 1. The top and bottom ends of the push rod 313 are fixedly connected to a first rack 315, and one end of the push rod 313 away from the air cylinder 311 is fixedly connected to a first connecting block 316. The first connecting block 316 is fixedly connected to a first cutter 317 on the side away from the push rod 313. The second shredding assembly includes a first push-pull plate 3 2, the first push-pull plate 32 is located at the top and bottom of the push rod 313, the first push-pull plate 32 passes through the crushing box 1 and is slidably connected to the crushing box 1, support limit grooves 321 are opened on both sides of the first push-pull plate 32, the support limit grooves 321 are slidably connected to the crushing box 1, one end of the first push-pull plate 32 located inside the crushing box 1 is fixedly connected to the second connecting block 322, and the second cutting knife 323 is fixedly connected to the side of the second connecting block 322 close to each other, and the second rack 326 is fixedly connected to the side of the first push-pull plate 32 close to the push rod 313. The side of the bar 326 close to the push rod 313 is meshed with a second gear 324, and the side of the second gear 324 away from the first push-pull plate 32 is meshed with the first rack 315. The middle part of the second gear 324 is rotatably connected to the support rod 325, and the support rod 325 is fixedly connected to the crushing box 1. The limiting guide assembly includes a support guide box 33, and the support guide box 33 is fixed inside the crushing box 1 and located at the bottom end of the crushing assembly. The top of the support guide box 33 is fixedly connected to a guide frame 331, and the guide frame 331 is fixedly connected to the crushing box 1. The middle part of the support guide box 33 Support scraping grooves 332 are provided on both sides, and the support scraping grooves 332 are slidably connected to the second cutting knife 323 and the first cutting knife 317. The third shredding assembly includes a second push-pull plate 34, and the top end of the second push-pull plate 34 is rotatably connected to the first connecting head 341, the top end of the first connecting head 341 is fixedly connected to the bottom end of the first push-pull plate 32, the bottom end of the second push-pull plate 34 is rotatably connected to the second connecting head 342, the bottom end of the second connecting head 342 is fixedly connected to the third connecting block 343, and the bottom end of the third connecting block 343 is fixedly connected to the third cutting knife 344.

[0034] In this embodiment, the crushed plastic bag falls onto the guide frame 331, slides along the guide frame 331 into the support guide box 33, and the cylinder 311 is started. The cylinder 311 drives the gas rod 312 to extend and retract, and the gas rod 312 drives the push rod 313 to move. The push rod 313 drives the first rack 315 and the first cutter 317 to reciprocate, and the first rack 315 drives the second gear 324 to rotate, and the second gear 324 drives the first push-pull plate 32 to move, and the first push-pull plate 32 drives the second cutter 323 to reciprocate, so that the first cutter 317 and the second cutter 323 move up and down alternately, so that the second cutter 32 The cutting of the second cutter 323 and the first cutter 317 can realize multi-layer cutting, so that when the second cutter 323 and the first cutter 317 are separated, the plastic bag leaks out and causes incomplete shredding, and a support scraping groove 332 is arranged on the support guide box 33, which can support and limit the second cutter 323 and the first cutter 317, and after the second cutter 323 and the first cutter 317 are separated from each other, they will be closely attached to the support scraping groove 332, and the support scraping groove 332 can scrape off the plastic bags adhered to the second cutter 323 and the first cutter 317, so it is convenient to discharge and clean the plastic bags on the second cutter 323 and the first cutter 317.

[0035] like Figure 1 - Figure 8 As shown, a discharge port 41 is provided on one side of the bottom end of the collecting box 4, a guide plate 42 is fixedly connected to the bottom end of the collecting box 4, a conveying assembly includes a second motor 51, the second motor 51 is arranged at the top end of the front face of the discharge port 41, a side of the second motor 51 close to the collecting box 4 is transmission-connected with a supporting rotating rod 511, the supporting rotating rod 511 penetrates the collecting box 4 and is rotationally connected to the collecting box 4, there are four supporting rotating rods 511, and two are arranged in a group, the two groups are close to each other, one end of the supporting rotating rod 511 close to the second motor 51 is fixedly connected with a rotating wheel 512, the middle part of the rotating wheel 512 is transmission-connected with a belt 513, and the middle part of the supporting rotating rod 511 is fixedly connected with a rotating roller 514 The outer wall of the rotating roller 514 is transmission-connected with a conveyor belt 515, and a support frame 52 is provided on the side where the conveyor belts 515 are away from each other. The support frame 52 is fixedly connected to the collecting box 4, and the two sides of the top of the inner side of the support frame 52 are fixedly connected with a limiting plate 521. A first limiting groove 522 is provided in the middle of the limiting plate 521, and the first limiting groove 522 is slidably connected to the third cutter 344. A fixing rod 53 is fixedly connected to the side of the bottom end of the support frame 52 close to the conveyor belt 515, and a fixing plate 531 is fixedly connected to the bottom end of the fixing rod 53. A brush 532 is fixedly connected to the side of the fixing plate 531 close to the conveyor belt 515, and the brush 532 is slidably connected to the conveyor belt 515.

[0036] In this embodiment, when the plastic bag is cut and crushed and falls onto the conveyor belt 515, the second motor 51 is started, and the second motor 51 drives the supporting rotating rod 511 to rotate, and the supporting rotating rod 511 drives the rotating wheel 512 to rotate, and the rotating wheel 512 drives the belt 513 to rotate, so that the supporting rotating rod 511 on the other side rotates, and at this time, the rotating roller 514 rotates to drive the conveyor belt 515 to rotate to transport the fallen crushed plastic bag to the support frame 52, and when the first push-pull plate 32 moves, it drives the first connecting head 341 to move, and the first connecting head 341 pushes and pulls the second push-pull plate 34, and the second push-pull plate 34 moves to drive the second connecting head 342 to move up and down, and the second connecting head 342 drives the third connecting block 343 to move, and the third connecting block 343 drives the third cutter 344 to move up and down, and the third cutter The plastic bags on the support frame 52 are shredded again by the third cutter 344, and the plastic bags on the support frame 52 are squeezed and moved through the continuous conveyance of the conveyor belt 515, thereby preventing the plastic bags from staying on the support frame 52. The plastic bags are finally completely crushed by the third cutter 344, and then squeezed and dropped into the collection box 4 for discharge. The crushed plastic bags adhering to the third cutter 344 are scraped off by the limit plate 521, and when the conveyor belt 515 transports the crushed plastic bags, some crushed plastic bags will adhere to the conveyor belt 515, and the brush 532 can clean these plastic bags, which is convenient for the plastic bags to fall into the collection box 4 and avoids clogging the conveyor belt 515. The cut plastic bags fall onto the guide plate 42, slide to the bottom along the guide plate 42, and are finally discharged and collected through the discharge port 41.

[0037] like Figure 1 - Figure 8 As shown, the crushing assembly includes a crushing roller 24, which is rotatably connected to the top of the crushing box 1, one end of the crushing roller 24 is fixedly connected to a first rotating rod 22, the first rotating rod 22 penetrates the crushing box 1 and is rotatably connected to the crushing box 1, one end of the first rotating rod 22 located outside the crushing box 1 is fixedly connected to a first gear 23, and one end of the first rotating rod 22 located at the first gear 23 away from the crushing roller 24 is transmission-connected to a first motor 21.

[0038] In this embodiment, the staff adds the waste plastic bags into the crushing box 1 through the feed port 11, starts the first motor 21, the first motor 21 drives the first rotating rod 22 to rotate, the first rotating rod 22 drives the first rotating rod 22 on the other side to rotate through the first gear 23, and then the crushing roller 24 rotates to crush the waste plastic bags. The crushed plastic bags fall onto the guide frame 331, and then the shredding work is achieved through the shredding structure.

[0039] Working principle: First, the staff adds the waste plastic bags into the crushing box 1 through the feed port 11, starts the first motor 21, the first motor 21 drives the first rotating rod 22 to rotate, the first rotating rod 22 drives the first rotating rod 22 on the other side to rotate through the first gear 23, at this time, the crushing roller 24 rotates to crush the waste plastic bags, the crushed plastic bags fall onto the guide frame 331, slide along the guide frame 331 into the support guide box 33, start the cylinder 311, the cylinder 311 drives the gas rod 312 to extend and retract, the gas rod 312 drives the push rod 313 to move, the push rod 313 drives the first rack 315 and the first cutter 317 to reciprocate, and the first rack 315 drives the second gear 324 to rotate, the second gear 324 drives the first push-pull The plate 32 moves, and the first push-pull plate 32 drives the second cutter 323 to move back and forth, so that the first cutter 317 and the second cutter 323 move up and down alternately. Therefore, multi-layer cutting can be achieved through the cutting of the second cutter 323 and the first cutter 317, and a support scraping groove 332 is provided on the support guide box 33, which can support and limit the second cutter 323 and the first cutter 317, and after the second cutter 323 and the first cutter 317 are separated from each other, they will be closely attached to the support scraping groove 332, and the support scraping groove 332 can scrape off the plastic bags adhered to the second cutter 323 and the first cutter 317, so it is convenient to discharge and clean the plastic bags on the second cutter 323 and the first cutter 317. When the plastic bags are cut and crushed, they fall onto the conveyor belt 5 When the first push-pull plate 32 moves, it drives the first connecting head 341 to move, and the first connecting head 341 pushes and pulls the second push-pull plate 34, and the second push-pull plate 34 moves and drives the second connecting head 342 to move up and down, and the second connecting head 342 drives the third connecting block 343 to move, and the third connecting block 343 drives the third cutter 344 to move up and down, and the third cutter 344 cuts the plastic bags on the support frame 52. The material bag is shredded again, and the continuous conveyance of the conveyor belt 515 causes the plastic bags on the support frame 52 to be squeezed and moved, thereby preventing the plastic bags from staying on the support frame 52. The material bag is shredded by the third cutter 344 and finally completely crushed, and then squeezed and dropped into the collection box 4 for discharge. The crushed plastic bags adhering to the third cutter 344 are scraped off by the limit plate 521, and when the conveyor belt 515 transports the crushed plastic bags, some crushed plastic bags will adhere to the conveyor belt 515, and the brush 532 can clean these plastic bags, making it easier for the plastic bags to fall into the collection box 4 and avoiding blockage of the conveyor belt 515. The cut plastic bags fall onto the guide plate 42, slide down the guide plate 42 to the bottom, and are finally discharged and collected through the discharge port 41.

[0040] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A plastic bag shredding device for recycling waste plastic bags, comprising a shredding box (1), characterized in that: The top of the pulverizing box (1) is fixedly connected to a feed port (11), the top of the pulverizing box (1) is provided with a pulverizing assembly, the bottom of the pulverizing box (1) is provided with a shredding structure, the shredding structure comprising a first shredding assembly, a second shredding assembly, a limiting guide assembly and a third shredding assembly, the second shredding assembly being located at the top and bottom of the first shredding assembly, the bottom of the pulverizing box (1) is fixedly connected to a collecting box (4), the top of the collecting box (4) is provided with a conveying assembly, the first shredding assembly comprises a protective box (31), the protective box (31) is fixedly connected to the middle of both sides of the bottom of the pulverizing box (1), the middle of the protective box (31) away from the pulverizing box (1) is fixedly connected to a cylinder (311), the end of the cylinder (311) close to the pulverizing box (1) is fixedly connected to an air rod (312); One end of the air rod (312) away from the air cylinder (311) is fixedly connected to a push rod (313), and both sides of the push rod (313) are fixedly connected to support limit blocks (314). The push rod (313) and the support limit blocks (314) penetrate the crushing box (1) and are slidably connected to the crushing box (1). The top and bottom ends of the push rod (313) are fixedly connected to a first rack (315). One end of the push rod (313) away from the air cylinder (311) is fixedly connected to a first connection block (316), and a first cutter (317) is fixedly connected to the side of the first connection block (316) away from the push rod (313); The second shredding assembly comprises a first push-pull plate (32), the first push-pull plate (32) being located at the top and bottom ends of the push rod (313), the first push-pull plate (32) passing through the shredding box (1) and being slidably connected to the shredding box (1), support limit grooves (321) being provided on both sides of the first push-pull plate (32), the support limit grooves (321) being slidably connected to the shredding box (1), one end of the first push-pull plate (32) located inside the shredding box (1) being fixedly connected to a second connecting block (322), and a second cutter (323) being fixedly connected to a side of the second connecting block (322) close to each other; A second rack (326) is fixedly connected to a side of the first push-pull plate (32) close to the push rod (313); a second gear (324) is meshed with a side of the second rack (326) close to the push rod (313); a side of the second gear (324) away from the first push-pull plate (32) is meshed with the first rack (315); a support rod (325) is rotatably connected to the middle of the second gear (324); and the support rod (325) is fixedly connected to the crushing box (1); The position-limiting material guide assembly comprises a support guide box (33), the support guide box (33) being fixed inside the crushing box (1) and located at the bottom end of the crushing assembly, the top end of the support guide box (33) being fixedly connected to a guide frame (331), the guide frame (331) being fixedly connected to the crushing box (1), support scraping grooves (332) being provided on both sides of the middle of the support guide box (33), the support scraping grooves (332) being slidably connected to the second cutter (323) and the first cutter (317).

2. A plastic bag shredding device for recycling waste plastic bags according to claim 1, characterized in that: The third shredding assembly comprises a second push-pull plate (34), the top end of the second push-pull plate (34) is rotatably connected to a first connecting head (341), the top end of the first connecting head (341) is fixedly connected to the bottom end of the first push-pull plate (32), the bottom end of the second push-pull plate (34) is rotatably connected to a second connecting head (342), the bottom end of the second connecting head (342) is fixedly connected to a third connecting block (343), and the bottom end of the third connecting block (343) is fixedly connected to a third cutter (344).

3. The plastic bag shredding device for recycling waste plastic bags according to claim 1, characterized in that: A discharge port (41) is provided at one side of the bottom end of the collecting box (4), a guide plate (42) is fixedly connected to the bottom end of the collecting box (4), the conveying assembly comprises a second motor (51), the second motor (51) is arranged at the top end of the front face of the discharge port (41), a side of the second motor (51) close to the collecting box (4) is transmission-connected to a support rotating rod (511), the support rotating rod (511) passes through the collecting box (4) and is rotationally connected to the collecting box (4), there are four support rotating rods (511), and two of them are arranged in a group, and two groups of support rotating rods (511) are close to each other and are fixedly connected to a rotating wheel (512) at one end close to the second motor (51), the middle part of the rotating wheel (512) is transmission-connected to a belt (513), the middle part of the support rotating rod (511) is fixedly connected to a rotating roller (514), and the outer wall of the rotating roller (514) is transmission-connected to a conveyor belt (515).

4. A plastic bag shredding device for recycling waste plastic bags according to claim 3, characterized in that: A support frame (52) is provided on the side of the conveyor belt (515) that is away from each other. The support frame (52) is fixedly connected to the collection box (4). The two sides of the top of the support frame (52) are fixedly connected to a limiting plate (521). A first limiting groove (522) is provided in the middle of the limiting plate (521). The first limiting groove (522) is slidably connected to the third cutter (344).

5. A plastic bag shredding device for recycling waste plastic bags according to claim 4, characterized in that: A fixing rod (53) is fixedly connected to a side of the bottom end of the support frame (52) close to the conveyor belt (515); a fixing plate (531) is fixedly connected to the bottom end of the fixing rod (53); a brush (532) is fixedly connected to a side of the fixing plate (531) close to the conveyor belt (515); and the brush (532) is slidably connected to the conveyor belt (515).

6. The plastic bag shredding device for recycling waste plastic bags according to claim 1, characterized in that: The pulverizing assembly comprises a pulverizing roller (24), the pulverizing roller (24) being rotatably connected to the top end of the pulverizing box (1), one end of the pulverizing roller (24) being fixedly connected to a first rotating rod (22), the first rotating rod (22) passing through the pulverizing box (1) and being rotatably connected to the pulverizing box (1), one end of the first rotating rod (22) located outside the pulverizing box (1) being fixedly connected to a first gear (23), and one end of the first rotating rod (22) located away from the pulverizing roller (24) being transmission-connected to a first motor (21).

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