Shredding machine for plastic processing

Abstract

The invention discloses a shredding machine for plastic processing, and belongs to the technical field of plastic processing, the shredding machine comprises a main body module and a pressing crushing module, the main body module comprises a shredding box, the bottom of the shredding box is fixedly connected with a discharging box, and a step is fixedly connected between the top of the discharging box and the shredding box; a lifting groove is formed in the front end face of the shredding box, the pressing and crushing module comprises an elastic pressing assembly movably connected to the interior of the shredding box, and through arrangement of the elastic pressing assembly, a magnetic assembly, a lifting assembly, a feeding assembly and a driving assembly, after plastic is discharged, the plastic above the shredding assembly can be pressed; according to the plastic shredding device, plastic can be shredded by the shredding assembly conveniently, the phenomenon that the plastic slips above the shredding assembly is avoided, the plastic can be shredded under more conditions, the error-tolerant rate of the machine in use is increased, and the overall safety is improved without manual assistance of workers.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic processing, and more particularly to a shredder used for plastic processing. Background Art

[0002] A shredder is a machine used for coarse crushing, generally used to process unprocessed raw materials or scraps, recycling industry, to make them smaller in size. Compared with other crushers, it has low blade speed, low noise and low energy consumption. In the field of plastic processing, in order to facilitate the recycling of plastics, a shredder is usually needed to crush the plastics for subsequent processing.

[0003] According to the search, the patent with patent number CN216884775U discloses a plastic shredder, including a base, a shredding bin, a mounting frame and an electric displacement slide. Mounting frames are welded at both ends of the top of the base, and the top of the mounting frame is fixedly connected to the electric displacement slide by connecting bolts. The displacement end of the electric displacement slide is a sliding block, and a displacement plate is connected to the bottom of the sliding block. A servo electric cylinder is installed at the bottom of the displacement plate through a fixed groove, and the power output end of the servo electric cylinder is connected to a hollow bin, and a tempered glass cover is connected to the bottom of the hollow bin, and the tempered glass cover is located at the upper end of the shredding bin; the protective structure that can be easily moved to the top of the shredder can improve the safety effect during shredding. When plastic is crushed, dust will enter the nearby air. The shredder can easily collect dust and has light pollution to the surrounding air, which is suitable for widespread promotion and use.

[0004] With respect to the above-mentioned related technologies, the shredders in the current prior art are usually of the above-mentioned form. During use, although the plastic can be crushed in most cases, in the face of soft plastics, tool wear, excessive materials, and improper speed setting, part of the plastic is prone to slip on the shredding blades. The plastic cannot be crushed under such slipping and rolling conditions. Although it is possible for staff to manually press the material to allow it to enter the tool for crushing, this method has serious safety hazards. For this reason, a shredder for plastic processing is proposed. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a shredder for plastic processing, which adopts the following technical solution: A shredder for plastic processing comprises a main body module and a pressing and crushing module, the main body module comprises a shredding box, the bottom of the shredding box is fixedly connected to a discharging box, the top of the discharging box is fixedly connected to a step, the front end surface of the shredding box is provided with a lifting groove, the pressing and crushing module comprises an elastic pressing component movably connected to the inside of the shredding box, the top of the shredding box is fixedly connected to a magnetic component, the magnetic component is connected to the elastic pressing component, the front end of the front end of the shredding box is provided with a lifting component, the lifting component is connected to the elastic pressing component, the upper part of the outer surface of the shredding box is fixedly connected to a driving component, the outer surface of the driving component is adapted to the lifting component, one side of the shredding box is fixedly connected to a feeding pipe, the top of the feeding pipe is fixedly connected to a roller, the inner wall of the roller is provided with a loading component, the loading component is connected to the driving component, the inside of the discharging box is provided with a conveying component, the lower part of the inner wall of the shredding box is provided with a shredding component, and the shredding component is connected to the conveying component.

[0006] Furthermore, the elastic pressing assembly includes a pressure plate and a top plate slidably connected to the inside of the shredder box, the top plate is located above the pressure plate, and the four angles inside the top plate are movably connected to limit rods, the bottom ends of the four limit rods are fixedly connected to the top of the pressure plate, and the top of the pressure plate is fixedly connected with four springs, which are respectively located on the outside of the four limit rods.

[0007] Furthermore, the elastic pressing assembly also includes a contact plate movably connected to the outer surfaces of the four limit rods, the top of the contact plate contacts the bottom of the top plate, the bottom of the contact plate is fixedly connected to the tops of the four springs, the internal thread of the top plate is connected with an adjustment screw, the adjustment screw is located between the four limit rods, and the bottom end of the adjustment screw is rotatably connected to the top of the contact plate.

[0008] Furthermore, the lifting assembly includes a mounting plate fixedly connected to the front end surface of the shredder box, the mounting plate is located directly in front of the lifting slot, the interior of the mounting plate is rotatably connected to two inner shafts, one end of the two inner shafts are fixedly connected to a transmission sprocket, a chain is transmission-connected between the outer surfaces of the two transmission sprockets, and the other end of one of the inner shafts is fixedly connected to a connecting pinion.

[0009] Furthermore, the lifting assembly also includes a hollow frame fixedly connected to the front end surface of the top plate, the hollow frame is movably connected to the inside of the lifting slot, the inside of the hollow frame is movably connected to a driving shaft, and one end of the driving shaft is fixedly connected to the chain.

[0010] Furthermore, the driving assembly includes a first motor fixedly connected to the outer surface of the shredder box, an output shaft of the first motor is fixedly connected to an incomplete gear, and an outer surface of the incomplete gear is adapted to an outer surface of the connecting pinion.

[0011] Furthermore, the loading assembly includes a loading cylinder rotatably connected to the inside of the drum, a material groove is provided on the outer surface of the loading cylinder, a connecting shaft is fixedly connected to the front end surface of the loading cylinder, one end of the connecting shaft extends to the outside of the drum, and one end of the connecting shaft is fixedly connected to a connecting large gear, and the outer surface of the connecting large gear is meshed with the incomplete gear.

[0012] Furthermore, the magnetic assembly includes two first magnetic blocks fixedly connected to the top of the top plate, the top of the shredder box is fixedly connected to two fixed plates, the insides of the two fixed plates are fixedly connected to second magnetic blocks, and the two second magnetic blocks are magnetically connected to the two first magnetic blocks respectively.

[0013] Furthermore, the shredder assembly includes two central rotating rods which are rotatably connected between two sides of the inner wall of the shredder box, one end of the two central rotating rods extends to the outside of the shredder box, one end of the two central rotating rods is fixedly connected to a different-direction gear, the outer surfaces of the two different-direction gears are meshed with each other, the outer surfaces of the two central rotating rods are fixedly connected to a plurality of shredder blades, the plurality of shredder blades are staggered, both sides of the inner wall of the shredder box are fixedly connected to a plurality of adapter plates, the plurality of shredder blades and the plurality of adapter plates are staggered, one side of the shredder box is fixedly connected to a second motor, and the output shaft of the second motor is fixedly connected to the other end of one of the central rotating rods.

[0014] Furthermore, the conveying assembly includes two conveying rollers that are rotatably connected between the two sides of the inner wall of the discharge box, and a conveyor belt is transmission-connected between the outer surfaces of the two conveying rollers. One end of one of the conveying rollers extends to the outside of the discharge box, and one end of one of the conveying rollers is fixedly connected to the outer surface of the second motor output shaft with a transmission roller, and a transmission belt is transmission-connected between the outer surfaces of the two transmission rollers.

[0015] In summary, the present invention includes the following beneficial technical effects: (1) The present invention arranges an elastic pressing component, a magnetic component, a lifting component, a feeding component and a driving component, so that after the plastic is unloaded, the plastic above the shredding component can be pressed to facilitate the shredding of the plastic by the shredding component, and the plastic can be prevented from slipping above the shredding component, so that the plastic can be shredded in more situations, the fault tolerance rate of the machine is improved, and the overall safety is improved without the need for manual assistance by the staff; (2) The present invention adjusts the screw and the contact plate so that the contact plate can be driven downward by rotating the adjustment screw, thereby compressing the spring and changing the initial state of the spring, thereby changing the force of the pressing plate pressing the plastic. The pressing force can be adjusted as needed, making it easier for the machine to adapt to different plastic pressing requirements and improving the applicability of the machine. (3) The present invention avoids excessive feeding of materials through the arrangement of the feeding barrel, the feeding trough, the connecting shaft rod and the connecting large gear, thereby avoiding the problem of difficulty in grinding caused by excessive feeding of materials; (4) The present invention provides the first magnetic block and the second magnetic block so that when the incomplete gear does not transmit the transmission to the connecting pinion, the top plate can stay more stably at a position close to the top, thereby preventing it from shaking and falling, thereby improving the stability of the machine when in use; The present invention can automatically deliver the crushed plastic by arranging the conveying roller, the conveying belt, the driving roller and the driving belt, so as to facilitate the discharge of the crushed plastic and make the machine more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the position of the lifting slot of the present invention; Figure 3 This is a schematic diagram of the position of the pressing and crushing module of the present invention; Figure 4 It is a structural schematic diagram of the elastic pressing component of the present invention; Figure 5 For the present invention Figure 4 The enlarged structural diagram at A in the middle; Figure 6 For the present invention Figure 4 The enlarged structural diagram at B in the middle; Figure 7 This is a schematic diagram of the structure of the shredding component and the conveying component of the present invention; Figure 8 It is a structural schematic diagram of the blanking assembly of the present invention.

[0017] Description of the numbers in the figure: 100, main body module; 110, shredding box; 120, discharge box; 130, ladder; 140, lifting slot; 200, pressing and crushing module; 210, elastic pressing assembly; 211, pressing plate; 212, top plate; 213, spring; 214, limiting rod; 215, contact plate; 216, adjusting screw; 220, magnetic assembly; 221, first magnetic block; 222, fixing plate; 223, second magnetic block; 230, lifting assembly; 231, inner shaft; 232, driving sprocket; 233, chain; 234, hollow frame; 235, pushing shaft; 236, connecting pinion; 240, roller; 250, feed pipe; 260, loading assembly; 261, loading barrel; 262, material trough; 263, connecting shaft; 264, connecting large gear; 270, driving assembly; 271, first motor; 272, incomplete gear; 280, shredding assembly; 281, center rotating rod; 282, different direction gear; 283, shredding blade; 284, adapter; 285, second motor; 290, conveying assembly; 291, conveying roller; 292, conveying belt; 293, transmission roller; 294, transmission belt. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0020] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] The following is combined with Figure 1-8 The present invention is described in further detail.

[0022] See also Figure 1-8 A shredder for plastic processing includes a main body module 100 and a pressing and crushing module 200. The main body module 100 includes a shredding box 110. A discharge box 120 is fixedly connected to the bottom of the shredding box 110. A step 130 is fixedly connected between the top of the discharge box 120 and the shredding box 110. A lifting groove 140 is provided on the front surface of the shredding box 110. The pressing and crushing module 200 includes an elastic pressing component 210 movably connected to the inside of the shredding box 110. A magnetic component 220 is fixedly connected to the top of the shredding box 110. The magnetic component 220 is connected to the elastic pressing component 210. A lifting groove 140 is provided on the front surface of the shredding box 110. Component 230, the lifting component 230 is connected to the elastic pressing component 210, the upper part of the outer surface of the shredder box 110 is fixedly connected with a driving component 270, the outer surface of the driving component 270 is adapted to the lifting component 230, a feeding pipe 250 is fixedly connected to one side of the shredder box 110, the top of the feeding pipe 250 is fixedly connected to a roller 240, the inner wall of the roller 240 is provided with a loading component 260, the loading component 260 is connected to the driving component 270, the interior of the discharge box 120 is provided with a conveying component 290, the lower part of the inner wall of the shredder box 110 is provided with a shredding component 280, and the shredding component 280 is connected to the conveying component 290.

[0023] During use, the plastic to be crushed is put into the feeding component 260, and then the shredding component 280 and the driving component 270 are opened. The driving component 270 will first drive the feeding component 260 to rotate. During the rotation of the feeding component 260, the plastic will be poured into the shredding box 110 through the feeding pipe 250. The feeding component 260 will then be reset, and the staff can continue to put the plastic into the feeding component 260 to avoid too much plastic entering at one time. The shredding component 280 will then perform the crushing operation on the plastic, and the driving component 270 and the feeding component 260 will be separated from the transmission lifting component 230, and the lifting component 230 will drive the elastic force to press The component 210 is lifted and lowered, and the elastic pressing component 210 will be separated from the magnetic component 220 when it descends, and the elastic pressing component 210 will subsequently press the plastic, thereby facilitating the plastic to be crushed by the shredding component 280. The elastic pressing component 210 is subsequently reset and connected to the magnetic component 220. The driving component 270 then drives the loading component 260 to load the material again, so that the machine can continuously load and press the material to prevent the plastic from slipping on the shredding component 280. When the shredding component 280 is working, it will drive the conveying component 290, and the conveying component 290 moves the plastic crushed by the shredding component 280 out of the discharge box 120 for subsequent processing by the staff.

[0024] The elastic pressing assembly 210 includes a pressing plate 211 and a top plate 212 which are slidably connected to the inside of the shredder box 110. The top plate 212 is located above the pressing plate 211. The four angles inside the top plate 212 are movably connected to limit rods 214. The bottom ends of the four limit rods 214 are fixedly connected to the top of the pressing plate 211. The top of the pressing plate 211 is fixedly connected to four springs 213. The four springs 213 are respectively located outside the four limit rods 214. The elastic pressing assembly 210 also includes a contact plate 215 movably connected to the outer surface of the four limit rods 214. The contact plate 215 The top of the top plate 215 contacts the bottom of the top plate 212, the bottom of the contact plate 215 is fixedly connected to the top of the four springs 213, the internal thread of the top plate 212 is connected with an adjusting screw 216, the adjusting screw 216 is located between the four limit rods 214, the bottom end of the adjusting screw 216 is rotatably connected to the top of the contact plate 215, the lifting assembly 230 includes a mounting plate fixedly connected to the front end surface of the shredder box 110, the mounting plate is located just in front of the lifting slot 140, the interior of the mounting plate is rotatably connected to two inner shafts 231, one end of each of the two inner shafts 231 is fixedly connected to a transmission chain The outer surfaces of the two transmission sprocket wheels 232 are connected to each other with a chain 233, the other end of one of the inner shafts 231 is fixedly connected to a connecting pinion 236, the lifting assembly 230 also includes a hollow frame 234 fixedly connected to the front end surface of the top plate 212, the hollow frame 234 is movably connected to the inside of the lifting slot 140, the inside of the hollow frame 234 is movably connected to a driving shaft 235, one end of the driving shaft 235 is fixedly connected to the chain 233, the driving assembly 270 includes a first motor 271 fixedly connected to the outer surface of the shredder box 110, and the first motor 2 The output shaft of 71 is fixedly connected with an incomplete gear 272, and the outer surface of the incomplete gear 272 is adapted to the outer surface of the connecting pinion 236. The loading assembly 260 includes a loading cylinder 261 rotatably connected to the inside of the roller 240. The outer surface of the loading cylinder 261 is provided with a material groove 262. The front end face of the loading cylinder 261 is fixedly connected with a connecting shaft rod 263. One end of the connecting shaft rod 263 extends to the outside of the roller 240. One end of the connecting shaft rod 263 is fixedly connected with a connecting large gear 264. The outer surface of the connecting large gear 264 is meshed with the incomplete gear 272.

[0025] Turn on the second motor 285 and the first motor 271, the first motor 271 will drive the incomplete gear 272 to rotate, the incomplete gear 272 will rotate and drive the connecting large gear 264 when rotating, the connecting large gear 264 will drive the upper barrel 261 to rotate through the connecting shaft 263, the trough 262 will pour the plastic into the shredder box 110 through the feed pipe 250 during the rotation process, the trough 262 will be reset later, the staff can continue to put the plastic into the trough 262, so as to avoid too much plastic entering at one time, the shredder assembly 280 crushes the material, and the incomplete gear 272 and the connecting large gear 264 disengages from the transmission connecting pinion 236, and the connecting pinion 236 drives one of the inner shafts 231 and the transmission sprocket 232 to rotate, so that the chain 233 rolls and drives the pushing shaft 235 to move, and the pushing shaft 235 will move inside the hollow frame 234 and drive the top plate 212 to perform lifting operations through the hollow frame 234. When the top plate 212 descends, it will drive the first magnetic block 221 to disengage from the second magnetic block 223, and subsequently the top plate 212 drives the pressure plate 211 to descend and contact the plastic. Subsequently, the top plate 212 continues to descend to press the spring 213 to contract, thereby exerting pressure on the plastic, thereby facilitating the plastic to be crushed by the tearing blade 283.

[0026] The magnetic assembly 220 includes two first magnetic blocks 221 fixedly connected to the top of the top plate 212. Two fixed plates 222 are fixedly connected to the top of the shredder box 110. Second magnetic blocks 223 are fixedly connected to the inside of the two fixed plates 222. The two second magnetic blocks 223 are magnetically connected to the two first magnetic blocks 221 respectively.

[0027] When the top plate 212 is reset, the first magnetic block 221 is reconnected with the second magnetic block 223, so that when the incomplete gear 272 does not transmit the connecting pinion 236, the top plate 212 can stay more stably at a position close to the top to avoid shaking and falling.

[0028] The shredding assembly 280 includes two central rotating rods 281 that are rotatably connected between the two sides of the inner wall of the shredding box 110, one end of the two central rotating rods 281 extends to the outside of the shredding box 110, one end of the two central rotating rods 281 is fixedly connected to a different direction gear 282, the outer surfaces of the two different direction gears 282 are meshed with each other, the outer surfaces of the two central rotating rods 281 are fixedly connected to a plurality of shredding blades 283, the plurality of shredding blades 283 are staggered, and the two sides of the inner wall of the shredding box 110 are fixedly connected to a plurality of adapter pieces 284, the plurality of shredding blades 283 and the plurality of adapter pieces 284 are staggered. A second motor 285 is fixedly connected to one side of 10, and the output shaft of the second motor 285 is fixedly connected to the other end of one of the center rotating rods 281, and the conveying assembly 290 includes two conveying rollers 291 that are rotatably connected between the two sides of the inner wall of the discharge box 120, and a conveyor belt 292 is transmission-connected between the outer surfaces of the two conveying rollers 291, one end of one of the conveying rollers 291 extends to the outside of the discharge box 120, and one end of one of the conveying rollers 291 is fixedly connected to the outer surface of the output shaft of the second motor 285 with a transmission roller 293, and a transmission belt 294 is transmission-connected between the outer surfaces of the two transmission rollers 293.

[0029] Subsequently, the second motor 285 drives one of the center rotating rods 281 to rotate, and the engagement of two different-direction gears 282 enables the two center rotating rods 281 to drive multiple shredding blades 283 to rotate in different directions. The different-direction rotation of multiple shredding blades 283 realizes the crushing operation of the plastic. At the same time, when the second motor 285 is working, it will drive one of the conveying rollers 291 through the transmission belt 294, and drive the conveyor belt 292 to roll through the conveyor roller 291. The conveyor belt 292 will realize the removal of the crushed plastic, and the staff will carry out subsequent processing.

[0030] The implementation principle of the embodiment of the present invention is as follows: during use, the plastic to be crushed is put into the interior of the trough 262, and then the second motor 285 and the first motor 271 are turned on. The first motor 271 will drive the incomplete gear 272 to rotate, and the incomplete gear 272 will rotate the transmission connecting large gear 264 when rotating. The connecting large gear 264 will drive the upper barrel 261 to rotate through the connecting shaft 263. During the rotation of the trough 262, the plastic will be poured into the interior of the tearing box 110 through the feeding pipe 250. The trough 262 will be reset later, and the staff can continue to put the plastic The plastic is put into the trough 262 to avoid too much plastic entering at one time. Subsequently, the second motor 285 drives one of the central rotating rods 281 to rotate. Through the meshing of two eccentric gears 282, the two central rotating rods 281 drive multiple shredding blades 283 to rotate in opposite directions. The eccentric rotation of multiple shredding blades 283 realizes the crushing operation of the plastic, and the incomplete gear 272 is separated from the large gear 264 to drive the small gear 236. The small gear 236 drives one of the inner shafts 231 and the transmission sprocket 232 to rotate, so that the chain 233 rolls to drive the pushing shaft 235 to move, and the push shaft 235 is pushed. The movable shaft 235 will move inside the hollow frame 234 and drive the top plate 212 to perform lifting operations through the hollow frame 234. When the top plate 212 descends, it will drive the first magnetic block 221 to separate from the second magnetic block 223, and then the top plate 212 drives the pressure plate 211 to descend and contact the plastic. Subsequently, the top plate 212 continues to descend to press the spring 213 to contract, thereby applying pressure to the plastic, thereby facilitating the plastic to be crushed by the tearing blade 283. Subsequently, the push shaft 235 drives the top plate 212 and the pressure plate 211 to reset, and the first magnetic block 221 is reconnected with the second magnetic block 223, and the incomplete gear 2 At this time, the large gear 264 is connected again to load the material, so that the machine can continuously load and press the material to prevent the plastic from slipping on the tearing blade 283. When the second motor 285 is working, it will drive one of the conveying rollers 291 through the transmission belt 294, and the conveying belt 292 will roll through the conveying roller 291. The conveyor belt 292 will remove the crushed plastic for subsequent processing by the staff. The resistance plate 215 can be driven down by rotating the adjustment screw 216, thereby compressing the spring 213, changing the initial state of the spring 213, and then changing the force of the pressure plate 211 pressing the plastic.

[0031] The above are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A shredder for plastic processing, comprising a main body module (100) and a pressing and crushing module (200), characterized in that: The main body module (100) comprises a shredder box (110), a discharge box (120) is fixedly connected to the bottom of the shredder box (110), a step (130) is fixedly connected between the top of the discharge box (120) and the shredder box (110), and a lifting groove (140) is provided on the front end surface of the shredder box (110); The pressing and crushing module (200) comprises an elastic pressing component (210) movably connected to the inside of the shredding box (110); a magnetic component (220) is fixedly connected to the top of the shredding box (110); the magnetic component (220) is connected to the elastic pressing component (210); a lifting component (230) is arranged at the front end of the front face of the shredding box (110); the lifting component (230) is connected to the elastic pressing component (210); a driving component (270) is fixedly connected to the upper part of the outer surface of the shredding box (110); the outer surface of the driving component (270) The surface is adapted to the lifting assembly (230); a feed pipe (250) is fixedly connected to one side of the shredding box (110); a top end of the feed pipe (250) is fixedly connected to a roller (240); a loading assembly (260) is provided on the inner wall of the roller (240); the loading assembly (260) is connected to a driving assembly (270); a conveying assembly (290) is provided inside the discharge box (120); a shredding assembly (280) is provided at the lower part of the inner wall of the shredding box (110); and the shredding assembly (280) is connected to the conveying assembly (290).

2. A shredder for plastic processing according to claim 1, characterized in that: The elastic pressing assembly (210) comprises a pressing plate (211) and a top plate (212) which are slidably connected inside the shredder box (110); the top plate (212) is located above the pressing plate (211); four angles inside the top plate (212) are movably connected to limiting rods (214); the bottom ends of the four limiting rods (214) are fixedly connected to the top of the pressing plate (211); four springs (213) are fixedly connected to the top of the pressing plate (211); the four springs (213) are respectively located outside the four limiting rods (214).

3. A shredder for plastic processing according to claim 2, characterized in that: The elastic pressing assembly (210) further comprises a contact plate (215) movably connected to the outer surfaces of the four limit rods (214), the top of the contact plate (215) contacts the bottom of the top plate (212), the bottom of the contact plate (215) is fixedly connected to the tops of the four springs (213), the internal thread of the top plate (212) is connected with an adjusting screw (216), the adjusting screw (216) is located between the four limit rods (214), and the bottom end of the adjusting screw (216) is rotatably connected to the top of the contact plate (215).

4. A shredder for plastic processing according to claim 3, characterized in that: The lifting assembly (230) comprises a mounting plate fixedly connected to the front end surface of the shredder box (110), the mounting plate being located directly in front of the lifting slot (140), two inner shafts (231) being rotatably connected inside the mounting plate, one end of each of the two inner shafts (231) being fixedly connected to a transmission sprocket (232), a chain (233) being transmission-connected between the outer surfaces of the two transmission sprockets (232), and the other end of one of the inner shafts (231) being fixedly connected to a connecting pinion (236).

5. A shredder for plastic processing according to claim 4, characterized in that: The lifting assembly (230) further comprises a hollow frame (234) fixedly connected to the front end surface of the top plate (212); the hollow frame (234) is movably connected to the interior of the lifting slot (140); a driving shaft (235) is movably connected to the interior of the hollow frame (234); one end of the driving shaft (235) is fixedly connected to the chain (233).

6. A shredder for plastic processing according to claim 5, characterized in that: The driving assembly (270) comprises a first motor (271) fixedly connected to the outer surface of the shredder box (110), an output shaft of the first motor (271) being fixedly connected to an incomplete gear (272), an outer surface of the incomplete gear (272) being adapted to the outer surface of the connecting pinion (236).

7. A shredder for plastic processing according to claim 6, characterized in that: The loading assembly (260) comprises a loading cylinder (261) rotatably connected to the inside of the roller (240), a material groove (262) being provided on the outer surface of the loading cylinder (261), a connecting shaft (263) being fixedly connected to the front end surface of the loading cylinder (261), one end of the connecting shaft (263) extending to the outside of the roller (240), and one end of the connecting shaft (263) being fixedly connected to a connecting large gear (264), and the outer surface of the connecting large gear (264) being meshed with the incomplete gear (272).

8. A shredder for plastic processing according to claim 7, characterized in that: The magnetic assembly (220) comprises two first magnetic blocks (221) both fixedly connected to the top of the top plate (212); the top of the shredder box (110) is fixedly connected to two fixed plates (222); the interiors of the two fixed plates (222) are both fixedly connected to second magnetic blocks (223); and the two second magnetic blocks (223) are magnetically connected to the two first magnetic blocks (221) respectively.

9. A shredder for plastic processing according to claim 8, characterized in that: The shredding assembly (280) comprises two central rotating rods (281) which are rotatably connected between two sides of the inner wall of the shredding box (110); one end of the two central rotating rods (281) extends to the outside of the shredding box (110); one end of the two central rotating rods (281) is fixedly connected to a different direction gear (282); the outer surfaces of the two different direction gears (282) are meshed with each other; the outer surfaces of the two central rotating rods (281) are fixedly connected to a plurality of shredding blades (283); the plurality of shredding blades (283) are staggered; two sides of the inner wall of the shredding box (110) are fixedly connected to a plurality of adapter plates (284); the plurality of shredding blades (283) and the plurality of adapter plates (284) are staggered; one side of the shredding box (110) is fixedly connected to a second motor (285); the output shaft of the second motor (285) is fixedly connected to the other end of one of the central rotating rods (281).

10. A shredder for plastic processing according to claim 9, characterized in that: The conveying assembly (290) comprises two conveying rollers (291) which are rotatably connected between two sides of the inner wall of the discharge box (120); a conveying belt (292) is transmission-connected between the outer surfaces of the two conveying rollers (291); one end of one of the conveying rollers (291) extends to the outside of the discharge box (120); one end of one of the conveying rollers (291) and the outer surface of the output shaft of the second motor (285) are fixedly connected to a transmission roller (293); and a transmission belt (294) is transmission-connected between the outer surfaces of the two transmission rollers (293).

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