A raw material crushing device for automobile sealing strip processing

Abstract

This invention provides a raw material crushing device for automotive sealing strip processing, relating to the field of crushing technology. It includes a base and a crushing mechanism, the crushing mechanism comprising a reducer. The reducer is mounted on the upper surface of the base, and a motor is connected to one side of the reducer. The output end of the motor is connected to the input end of the reducer. A crushing chamber is provided between the base and the device. It also includes an auxiliary mechanism, comprising two sets of straight toothed plates, located on opposite sides of the crushing chamber. Arc-shaped toothed plates mesh with the inner sidewalls of the straight toothed plates. The arc-shaped toothed plates and the straight toothed plates are connected at both ends by rubber belts. The two ends of the rubber belts are in contact with the inner sidewalls of the crushing chamber. Multiple sets of arc-shaped blocks are connected to the other side of the arc-shaped toothed plates, and multiple sets of fixing sleeves are connected to the other sidewall of the straight toothed plates. This device, through the design of the arc-shaped block pushing mechanism and the rotor working in coordination, effectively solves the problem of rubber materials scattering and low crushing efficiency during the crushing process.

Description

Technical Field

[0001] This invention relates to the field of crushing technology, and more specifically, to a crushing device for raw materials used in the processing of automotive sealing strips. Background Technology

[0002] The raw materials used in the processing of automotive sealing strips in the current technology are mainly natural rubber or synthetic rubber. Before the sealing strip is formed, the block or strip-shaped rubber raw materials usually need to be crushed to obtain rubber particles or powder with uniform particle size and good flowability, so as to meet the requirements of subsequent processing such as mixing and extrusion. Traditional rubber material crushing operations generally use general-purpose crushing equipment. Its basic working method is to directly feed the rubber block to be crushed into the crushing chamber of the crusher. The high-speed rotating crushing blades repeatedly impact, shear and tear the rubber material to achieve the crushing and refinement of the rubber material. However, this simple and direct feeding method... The crushing method suffers from problems such as disordered material dispersion and low crushing efficiency. Due to the elasticity and toughness of rubber materials, under the impact of the high-speed rotating parts of the crusher, rubber blocks are not only crushed but also thrown and bounced around, exhibiting an irregular random motion state in the crushing chamber. This causes the rubber material to splash and bounce around in the crushing chamber, resulting in uneven distribution. A large amount of rubber blocks are thrown to the corners of the crushing chamber wall or areas far from the crushing blades. The rubber material in these locations cannot be effectively crushed and needs to rely on its own gravity or airflow disturbance to return to the effective working area of ​​the crushing blades, thus prolonging the overall crushing time of the rubber material.

[0003] Besides the problem of low crushing efficiency caused by material dispersion, traditional crushers are also prone to material jamming and clogging when processing rubber materials, further exacerbating the decline in crushing efficiency. When rubber materials are subjected to high-speed impact and shearing action from the crushing blades, due to their unique high elasticity and high toughness, they often do not break down quickly like brittle materials. Instead, they exhibit stretching deformation, entanglement, and adhesion, usually sticking between multiple sets of crushing blades and rotating with the blades. This causes a sharp increase in the operating load and motor resistance. Operators must stop the machine, open the crushing chamber, and manually clean it, peeling off and removing the entangled and clogged rubber materials one by one before restarting the equipment to continue crushing. This frequent shutdown and cleaning operation seriously affects the continuity and stability of the crushing operation, reduces the actual production efficiency and uptime of the equipment, and increases the labor intensity and safety risks for operators. Summary of the Invention

[0004] (a) Technical problems to be solved To address the problems existing in the prior art, the present invention provides a raw material crushing device for processing automotive sealing strips, thereby solving the technical problems mentioned in the background art.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: A raw material crushing device for automotive sealing strip processing includes a base; it also includes a crushing mechanism, the crushing mechanism including a reducer, the reducer being provided on the upper surface of the base, a motor connected to one side of the reducer, the output end of the motor being connected to the input end of the reducer, and a crushing box being provided between the bases; it also includes an auxiliary mechanism, the auxiliary mechanism including two sets of straight toothed plates, respectively located on both sides inside the crushing box, the inner sidewall of the straight toothed plates meshing with arc-shaped toothed plates, the arc-shaped toothed plates and the two ends of the straight toothed plates being connected by rubber belts, the two ends of the rubber belts being in contact with the inner sidewall of the crushing box, multiple sets of arc-shaped blocks being connected to the other side of the arc-shaped toothed plates, and multiple sets of fixing sleeves being connected to the other sidewall of the straight toothed plates, the multiple sets of fixing sleeves being connected by lifting rods, the lifting rods being inserted into the fixing sleeves.

[0006] Preferably, the bottom of the crushing box has a discharge port, the lower part of the inner side wall of the crushing box is connected with two sets of inclined panels, and multiple sets of sliding grooves are opened on the surface of the two side walls of the crushing box, and the fixing sleeve slides in the sliding grooves.

[0007] Preferably, two sets of rotating shafts are rotatably connected inside the crushing box, a hexagonal rod is connected in the middle of the rotating shaft, and gears are sleeved at both ends of the rotating shaft, with the gears on the two adjacent sets of rotating shafts meshing with each other.

[0008] Preferably, multiple sets of rotors are sleeved on the hexagonal rods between each set of rotating shafts, and an intermediate ring is sleeved between every two sets of rotors. The rotors and intermediate rings on the hexagonal rods on both sides are staggered, and the arc-shaped blocks on both sides are in contact with the outer wall of the corresponding intermediate ring.

[0009] Preferably, the upper surface of the base is provided with four sets of sliding rods, two sets located on each side of the crushing box, and the two sets of sliding rods on one side are connected by a connecting plate.

[0010] Preferably, each set of sliding rods has a top plate and a bottom plate slidably connected to it, and the top plate and the bottom plate are connected by two sets of connecting rods.

[0011] Preferably, a lifting rod is provided between the top plate and the bottom plate, and the surface of the lifting rod is provided with a socket adapted to the lifting rod, and the two ends of the two sets of lifting rods are respectively inserted into the corresponding sockets.

[0012] Preferably, a guide sleeve is slidably connected between the connecting rod and the lifting rod. The guide sleeve is fitted onto the surface of the sliding rod. Two sets of limiting blocks are provided on the side wall of the guide sleeve. Two sets of limiting bolts that are adapted to the limiting blocks are threadedly connected to both the top plate and the bottom plate.

[0013] Preferably, a lifting sleeve is connected between two sets of guide sleeves on the same side, and two sets of cranks are slidably connected inside the lifting sleeve. One end of each set of cranks is fixedly connected to the end of the corresponding rotating shaft, and the other end of one set of cranks is fixedly connected to the output end of the reducer.

[0014] Preferably, both the top plate and the bottom plate are threadedly connected with threaded sleeves, which are slidably connected to the slide rod. One end of the threaded sleeve is connected to a thrust bearing, and the other end of the thrust bearing is connected to a compression spring. The other end of the compression spring is connected to the side wall of the guide sleeve.

[0015] (III) Beneficial Effects Compared with the prior art, the present invention provides a raw material crushing device for processing automotive sealing strips, which has the following beneficial effects: This invention achieves active guidance and position adjustment of rubber raw materials in the crushing chamber through the meshing linkage of straight toothed plates and arc-shaped toothed plates in the auxiliary mechanism. When the crank drives the lifting sleeve to rise or fall, the straight toothed plates drive the arc-shaped toothed plates to swing up or down. The arc-shaped blocks on the side wall of the arc-shaped toothed plates push the rubber raw materials that were originally scattered in the corners or far away from the rotor area to the effective crushing area between the two sets of rotors, so that the material is always within the shearing action range of the rotor and the intermediate ring. This avoids the low crushing efficiency caused by disorderly splashing of materials, significantly shortens the overall crushing time and increases the throughput per unit time.

[0016] This invention utilizes the bidirectional pushing action of the arc-shaped block during the lifting process to effectively solve the problem of jamming and blockage caused by rubber materials easily entangled and sticking to the rotor. When the rubber is entangled between adjacent rotors and tightly attached to the intermediate ring, the powerful swing of the arc-shaped block driven by the straight tooth plate can push the entangled rubber away, release the jam between the rotor and the intermediate ring, and ensure the continuous crushing operation. At the same time, the design of the rubber belt prevents the raw material from falling into the gap between the straight tooth plate and the arc-shaped tooth plate, further improving the operational stability of the equipment.

[0017] This invention introduces a compression spring as an elastic buffer element into the transmission chain of the auxiliary mechanism. This avoids equipment damage or motor overload caused by forcibly pushing with maximum rigidity when encountering severe entanglement. When the pushing resistance of the arc block exceeds the preload of the compression spring, the compression spring is first compressed to absorb the impact energy. Only after the limit bolt abuts against the limit block does the crank drive the entire mechanism to move. This graded buffer design can effectively clean materials under normal working conditions and protect transmission components and motors in extreme jamming situations, significantly improving the equipment's overload resistance and service life.

[0018] This invention achieves flexible adjustment of the auxiliary mechanism's stroke and buffer force through the adjustment structure of the limiting bolt and threaded sleeve. The operator can change the maximum distance between the limiting block and the top or bottom plate by replacing the limiting bolts of different lengths according to the hardness, viscosity, and winding characteristics of different rubber raw materials, thereby adjusting the swing amplitude of the arc block. At the same time, by rotating the threaded sleeve to change the pre-compression of the compression spring, the magnitude of the buffer force can be precisely set, enabling the device to quickly adapt to the crushing requirements of various sealing strip raw materials, greatly enhancing the equipment's process adaptability and versatility.

[0019] This invention couples the rotary crushing action of the crushing mechanism with the reciprocating pushing action of the auxiliary mechanism through a crank, lifting sleeve and gear transmission system, and achieves synchronous linkage driven by the same motor. No additional power source is required, the structure is compact and the energy consumption is low. At the same time, the smooth sliding of the guide sleeve on the slide rod and the precise positioning of the limit bolts ensure the coordination and reliability of each moving part, providing a stable, intelligent and easy-to-maintain solution for the large-scale and efficient crushing of raw materials for automotive sealing strip processing. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a raw material crushing device for processing automotive sealing strips according to the present invention; Figure 2 This is a schematic diagram of the structure of the base and crushing box in this invention; Figure 3 In this invention Figure 2 A schematic diagram of the cross-sectional structure; Figure 4 This is a schematic diagram of the structure of the rotating shaft and rotor in this invention; Figure 5 This is a schematic diagram of the straight toothed plate and the curved toothed plate in this invention; Figure 6 This is a schematic diagram of the slide bar and lifting sleeve in this invention; Figure 7 This is a schematic diagram of the lifting rod and guide sleeve in this invention; Figure 8 This is a schematic diagram of the threaded sleeve and compression spring in this invention; Figure 9 This is a schematic diagram of the crank mechanism in this invention.

[0021] In the diagram: 11. Base; 21. Reducer; 22. Motor; 23. Crushing box; 24. Discharge port; 25. Inclined panel; 26. Slide groove; 27. Shaft; 28. Hexagonal rod; 29. ​​Gear; 31. Straight toothed plate; 32. Arc toothed plate; 33. Rubber belt; 34. Arc block; 35. Fixing sleeve; 36. Lifting rod; 37. Slide rod; 38. Connecting plate; 39. Top plate; 210. Rotor; 211. Intermediate ring; 310. Base plate; 311. Connecting rod; 312. Lifting rod; 313. Insertion hole; 314. Guide sleeve; 315. Limiting block; 316. Limiting bolt; 317. Lifting sleeve; 318. Crank; 319. Threaded sleeve; 320. Thrust bearing; 321. Compression spring. Detailed Implementation

[0022] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0023] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0024] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0025] Please see Figures 1-9 A raw material crushing device for automotive sealing strip processing includes a base 11 and a crushing mechanism. The crushing mechanism includes a reducer 21. The reducer 21 is located on the upper surface of the base 11. A motor 22 is connected to one side of the reducer 21. The output end of the motor 22 is connected to the input end of the reducer 21. A crushing box 23 is provided between the base 11. A discharge port 24 is opened at the bottom of the crushing box 23. Two sets of inclined plates 25 are connected to the lower part of the inner side wall of the crushing box 23. Multiple sets of sliding grooves 26 are opened on the surface of the side walls of the crushing box 23. A fixing sleeve 3 is provided. 5 slides in the chute 26, and two sets of rotating shafts 27 are rotatably connected in the crushing box 23. A hexagonal rod 28 is connected in the middle of the rotating shaft 27. Gears 29 are sleeved at both ends of the rotating shaft 27. The gears 29 on the two adjacent sets of rotating shafts 27 mesh with each other. Multiple sets of rotors 210 are sleeved on the hexagonal rod 28 between each set of rotating shafts 27. An intermediate ring 211 is sleeved between every two sets of rotors 210. The rotors 210 and intermediate rings 211 on the hexagonal rods 28 on both sides are staggered. The arc surface blocks 34 on both sides are in contact with the outer wall of the corresponding intermediate ring 211. It also includes an auxiliary mechanism, which includes two sets of straight toothed plates 31, located on both sides inside the crushing box 23. An arc-shaped toothed plate 32 meshes with the inner wall of the straight toothed plate 31. The arc-shaped toothed plate 32 is connected to the straight toothed plate 31 at both ends by a rubber band 33, the two ends of which are in contact with the inner wall of the crushing box 23. Multiple sets of arc-shaped blocks 34 are connected to the other side of the arc-shaped toothed plate 32, and multiple sets of fixing sleeves 35 are connected to the other side of the straight toothed plate 31. The multiple sets of fixing sleeves 35 are connected to a lifting rod. The lifting rod 36 is inserted into the fixing sleeve 35. Four sets of sliding rods 37 are provided on the upper surface of the base 11, arranged in pairs on both sides of the crushing box 23. Two sets of sliding rods 37 on one side are connected by a connecting plate 38. A top plate 39 and a bottom plate 310 are slidably connected to each set of sliding rods 37. The top plate 39 and the bottom plate 310 are connected by two sets of connecting rods 311. A lifting rod 312 is also provided between the top plate 39 and the bottom plate 310. The surface of the lifting rod 312 has a socket 313 that matches the lifting rod 36. Two sets of lifting rods 36 are inserted into corresponding insertion holes 313 at both ends. A guide sleeve 314 is slidably connected between the connecting rod 311 and the lifting rod 312. The guide sleeve 314 is fitted onto the surface of the sliding rod 37. Two sets of limiting blocks 315 are provided on the side wall of the guide sleeve 314. Two sets of limiting bolts 316 that are compatible with the limiting blocks 315 are threaded onto the top plate 39 and the bottom plate 310. A lifting sleeve 317 is connected between the two sets of guide sleeves 314 on the same side. Two sets of cranks are slidably connected inside the lifting sleeve 317. 318, one end of each of the two sets of cranks 318 is fixedly connected to the end of the corresponding rotating shaft 27, and the other end of one set of cranks 318 is fixedly connected to the output end of the reducer 21. Threaded sleeves 319 are threadedly connected to the top plate 39 and the bottom plate 310. The threaded sleeves 319 are fitted on the slide rod 37 and slidably connected to the slide rod 37. One end of the threaded sleeve 319 is connected to a thrust bearing 320, and the other end of the thrust bearing 320 is connected to a compression spring 321. The other end of the compression spring 321 is connected to the side wall of the guide sleeve 314.

[0026] In this invention, the auxiliary mechanism can improve the crushing efficiency of the sealing strip raw material, and can also effectively alleviate the situation where rubber is wrapped between adjacent rotors 210. Specifically, the raw material to be crushed is transported into the crushing box 23, the motor 22 is started, the motor 22 drives the reducer 21 to run, and the output end of the reducer 21 drives the crank 318 connected to it to rotate. This crank 318 drives the corresponding side shaft 27 to rotate, and the shaft 27 drives the gears 29 at both ends to rotate synchronously. This side gear 29 will drive the other side gear 29 meshing with it to rotate in the opposite direction, thereby driving the other side shaft 27 to rotate in the opposite direction. The side shaft 27 drives the cranks 318 at both ends to rotate synchronously. Under the action of the hexagonal rod 28, the two sets of shafts 27 rotate in opposite directions, driving the rotors 210 and intermediate rings 211 on their surfaces to rotate synchronously. Under the action of the cranks 318, the corresponding lifting sleeves 317 on each side slide up and down along the slide rod 37 through the guide sleeve 314. When the crank 318 pushes the lifting sleeve 317 to rise, the lifting sleeve 317 pushes the threaded sleeve 319 above to move upward through the compression spring 321. The threaded sleeve 319 then drives the top plate 39 to move upward synchronously. The top plate 39 drives the bottom plate 310 below to move upward through the connecting rod 311 and the lifting rod 312. The lifting rods on both sides... 312 moves upward, causing the corresponding lifting rod 36 to move upward synchronously. The lifting rod 36 drives multiple sets of fixed sleeves 35 connected to it to slide upward along the slide groove 26. The fixed sleeves 35 drive the straight toothed plate 31 connected to the other end to move upward. During the upward movement of the straight toothed plate 31, the arc-shaped toothed plate 32 meshing with it rotates upward. The arc-shaped block 34 on the other side of the arc-shaped toothed plate 32 pushes the crushed raw material between the two rotors 210. The design of the rubber belt 33 effectively prevents the raw material from falling between the straight toothed plate 31 and the arc-shaped toothed plate 32, and at the same time, it can push the raw material on both sides to the middle. Similarly, when the crank 318 pushes the lifting sleeve 317 downward, the lifting sleeve... 317 pushes the lower threaded sleeve 319 downward through the lower compression spring 321. The lower threaded sleeve 319 then drives the bottom plate 310 to move downward synchronously. The top plate 39 moves downward through the connecting rod 311 and the lifting rod 312. The lifting rods 312 on both sides move downward, driving the corresponding lifting rods 36 to move downward synchronously. The lifting rods 36 drive the straight tooth plate 31 to move downward through multiple sets of fixed sleeves 35. The straight tooth plate 31 drives the arc tooth plate 32 that meshes with it to rotate downward. During this process, the rubber belt 33 will deform accordingly. At this time, the arc block 34 on the side wall of the arc tooth plate 32 can push down the raw material adhering between the rotors 210, ensuring the continuity of operation.

[0027] When the rubber is wound between the two rotors 210 and tightly adhered to the intermediate ring 211, and when the winding force is large but the arc-shaped block 34 lacks sufficient force to push and unwind the wound rubber, the motor 22 continues to drive the crank 318 to rotate. The crank 318 still tends to drive the lifting sleeve 317 to move up or down. For example, if the lifting sleeve 317 moves up, it pushes the upper compression spring 321 up through the guide sleeve 314. However, because the top plate 39 and the threaded sleeve 319 do not move, the compression spring 321 begins to be compressed until the limit connected to the top plate 39 is reached. The positioning bolt 316 abuts against the limiting block 315 on the side wall of the guide sleeve 314. At this time, the compression spring 321 is also compressed to the maximum. The motor 22 will drive the entire mechanism to continue to move upward. At this time, the motor 22 can directly push the fixing sleeve 35. Then, 34 will push the wound rubber open, so that the wound rubber is unwound and the jam between the two blades 210 is cleared. The design of the compression spring 321 plays a buffering role, instead of directly using the maximum force to push when encountering jamming. The length of the limiting bolt 316 can be changed to change the distance between it and the limiting block 315. The elastic force of the compression spring 321 can be adjusted by rotating the threaded sleeve 319.

[0028] In all the solutions mentioned above, for connections between two components, welding, bolt and nut connection, bolt or screw connection, or other known connection methods can be selected according to the actual situation. They will not be elaborated here. For all the fixed connections mentioned above, welding is preferred. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents. In all the solutions mentioned above, those involving the operation of electrical components, unless otherwise specified, are controlled by a controller. Since the devices matched with the controllers are common devices, their control principles and circuit connections are existing, well-known, and mature technologies, and their electrical connection relationships and specific circuit structures will not be elaborated here. Of all the solutions mentioned above, those involving motors can be combined with reducers if necessary. The connection structure and working principle between the motor and the reducer are existing known technologies and will not be elaborated upon in this invention. Of all the solutions mentioned above, those involving the connection between solar panels and batteries can be equipped with essential accessories such as inverters, battery charging controllers, cables, fuses, and brackets. Their control principles and circuit connections are all existing, well-known, and mature technologies, so their electrical connection relationships and specific circuit structures will not be elaborated here.

Claims

1. A raw material crushing device for processing automotive sealing strips, comprising a base (11); and further comprising a crushing mechanism, wherein the crushing mechanism includes a reducer (21), characterized in that: A speed reducer (21) is provided on the upper surface of the base (11). A motor (22) is connected to one side of the speed reducer (21). The output end of the motor (22) is connected to the input end of the speed reducer (21). A crushing box (23) is provided between the bases (11). An auxiliary mechanism is also included. The auxiliary mechanism includes a straight tooth plate (31). Two sets of straight tooth plates (31) are provided, located on both sides inside the crushing box (23). The inner sidewall of the straight tooth plate (31) is meshed with arc-shaped teeth. Plate (32), the arc-shaped toothed plate (32) shown is connected to the straight toothed plate (31) at both ends by a rubber belt (33). The two ends of the rubber belt (33) are attached to the inner side wall of the crushing box (23). Multiple sets of arc-shaped blocks (34) are connected to the other side of the arc-shaped toothed plate (32). Multiple sets of fixing sleeves (35) are connected to the other side wall of the straight toothed plate (31). The multiple sets of fixing sleeves (35) are connected by a lifting rod (36). The lifting rod (36) is inserted into the fixing sleeve (35).

2. The raw material crushing device for processing automotive sealing strips according to claim 1, characterized in that: The bottom of the crushing box (23) is provided with a discharge port (24), and the lower part of the inner side wall of the crushing box (23) is connected with two sets of inclined panels (25). Multiple sets of sliding grooves (26) are provided on the surface of the two side walls of the crushing box (23), and the fixing sleeve (35) slides in the sliding grooves (26).

3. The raw material crushing device for processing automotive sealing strips according to claim 2, characterized in that: The crushing box (23) is rotatably connected to two sets of rotating shafts (27). A hexagonal rod (28) is connected in the middle of the rotating shaft (27). Gears (29) are fitted at both ends of the rotating shaft (27). The gears (29) on the two adjacent sets of rotating shafts (27) mesh with each other.

4. The raw material crushing device for processing automotive sealing strips according to claim 3, characterized in that: Multiple sets of rotors (210) are fitted on the hexagonal rods (28) between each set of rotating shafts (27), and an intermediate ring (211) is fitted between every two sets of rotors (210). The rotors (210) and intermediate rings (211) on the hexagonal rods (28) on both sides are staggered, and the arc blocks (34) on both sides are in contact with the outer wall of the corresponding intermediate ring (211).

5. The raw material crushing device for processing automotive sealing strips according to claim 4, characterized in that: The upper surface of the base (11) is provided with four sets of sliding rods (37), which are located on both sides of the crushing box (23) in pairs. The two sets of sliding rods (37) on one side are connected by a connecting plate (38).

6. The raw material crushing device for processing automotive sealing strips according to claim 5, characterized in that: Each set of slide rods (37) is slidably connected to a top plate (39) and a bottom plate (310), and the top plate (39) and the bottom plate (310) are connected by two sets of connecting rods (311).

7. The raw material crushing device for processing automotive sealing strips according to claim 6, characterized in that: A lifting rod (312) is provided between the top plate (39) and the bottom plate (310). The surface of the lifting rod (312) is provided with a socket (313) that is compatible with the lifting rod (36). The two ends of the two sets of lifting rods (36) are respectively inserted into the corresponding socket (313).

8. The raw material crushing device for processing automotive sealing strips according to claim 7, characterized in that: A guide sleeve (314) is slidably connected between the connecting rod (311) and the lifting rod (312). The guide sleeve (314) is sleeved on the surface of the sliding rod (37). Two sets of limiting blocks (315) are provided on the side wall of the guide sleeve (314). Two sets of limiting bolts (316) that are adapted to the limiting blocks (315) are threadedly connected to the top plate (39) and the bottom plate (310).

9. The raw material crushing device for processing automotive sealing strips according to claim 8, characterized in that: A lifting sleeve (317) is connected between two sets of guide sleeves (314) on the same side. Two sets of cranks (318) are slidably connected inside the lifting sleeve (317). One end of the two sets of cranks (318) is fixedly connected to the end of the corresponding rotating shaft (27), and the other end of one set of cranks (318) is fixedly connected to the output end of the reducer (21).

10. A raw material crushing device for processing automotive sealing strips according to claim 9, characterized in that: Both the top plate (39) and the bottom plate (310) are threaded with threaded sleeves (319). The threaded sleeves (319) are fitted on the slide rod (37) and slidably connected to the slide rod (37). One end of the threaded sleeve (319) is connected to a thrust bearing (320), and the other end of the thrust bearing (320) is connected to a compression spring (321). The other end of the compression spring (321) is connected to the side wall of the guide sleeve (314).

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