A high molecular polymer processing raw material crushing device

Abstract

The present invention belongs to the technical field of plastic crushing, and specifically is a high molecular polymer processing raw material crushing device, comprising a machine body, a crushing barrel is rotatably provided on the machine body, and a plurality of crushing mechanisms are provided on the machine body, and the crushing mechanisms include: extension tubes uniformly distributed on the crushing barrel in an annular manner; a switch component movably provided in the extension tube, and the switch component is used to control the opening and closing of the extension tube; a mounting seat slidably provided on the machine body, and a crushing head is provided in the mounting seat; during the crushing process, the crushing barrel is in an intermittent flipping state, and the raw materials in the crushing barrel can be flipped, thereby improving the crushing effect, and during the flipping process, the crushing head is separated from the crushing barrel, reducing the workload of the crushing barrel rotation, thereby reducing energy consumption, and except for the extension tube at the bottom, there is no crushing head in the remaining extension tubes, avoiding the problem of the raw materials being stuck in the gap between the extension tube and the crushing head and affecting the movement of the crushing head, and the use effect is better.

Description

Technical Field

[0001] The invention belongs to the field of plastic crushing, in particular to a device for crushing high molecular polymer processing raw materials. Background Art

[0002] With the widespread use of plastic products, a large amount of waste plastics are generated. After processing, crushing, melting and extrusion, the waste plastics can be prepared into recycled polymer materials. Among them, the crusher used to crush the waste plastic raw materials usually adopts a rotating cutter or hammer to crush the waste plastic to reduce the size of the raw materials.

[0003] The existing extrusion type plastic crusher has a structure including a support frame and a crushing barrel that can rotate on a vertical plane. A push rod and a crushing head are provided on the outside of the crushing barrel. A plurality of groups of extension tubes and crushing heads are provided along the periphery of the crushing head. After the crushing barrel is driven to rotate intermittently, the plastic is crushed by crushing heads of different structures. The flipped crushing barrel can flip the plastic, thereby increasing the crushing angle and improving the crushing effect.

[0004] There are still some problems in the practical application of the above technical solution. The multiple groups of extension tubes and crushing heads in the crusher are all installed on the crushing barrel. During operation, the rotation of the crushing barrel drives the multiple groups of crushing heads to rotate synchronously, which increases the power required to drive the crushing barrel to rotate, resulting in increased energy consumption and use costs. Moreover, the crushing head is always in the extension tube. During the crushing process, when the extension tube rotates to the bottom, the debris generated in the crushing barrel may also fall into the extension tube and get stuck in the gap between the crushing head and the extension tube, causing the movement of the crushing head to be obstructed.

[0005] To this end, the present invention provides a high molecular polymer processing raw material crushing device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a high molecular polymer processing raw material crushing device of the present invention comprises a machine body, a crushing cylinder is rotatably provided on the machine body, the interior of the crushing cylinder is used to place the raw materials to be crushed, a cylinder cover is provided at the end of the crushing cylinder, and a plurality of crushing mechanisms are provided on the machine body;

[0008] The crushing mechanism includes: extension pipes evenly distributed in a ring on the crushing cylinder; a switch assembly movably arranged in the extension pipes, and the switch assembly is used to control the opening and closing of the extension pipes; a mounting seat slidably arranged on the machine body, a crushing head is arranged inside the mounting seat, the crushing head is located above the crushing cylinder, and after the mounting seat moves downward, it drives the crushing head to pass through the top extension pipe and enter the inside of the crushing cylinder to crush the raw materials in the crushing cylinder.

[0009] Preferably, the switch assembly includes: a sealing plate slidably inserted into the extension pipe, and the longitudinal section of the sealing plate is in a T shape; a tension spring for pushing the sealing plate into the extension pipe; a dial plate arranged on the machine body, and during the rotation of the crushing cylinder, when the dial plate contacts the top sealing plate, it drives the sealing plate to move, so that the top extension pipe is opened.

[0010] Preferably, a limiting block is arranged at the top end of the crushing head, and a sliding groove is arranged inside the mounting seat; the crushing mechanism further includes: a limiting plate slidably arranged in the mounting seat, the limiting plate is in a 冂 shape, and after the limiting plate moves downward, it blocks the outside of the limiting block to fix the crushing head in the mounting seat; a downward pressure spring arranged on the mounting seat for pushing the limiting plate to move downward.

[0011] Preferably, several groups of replacement mechanisms are further included, and each replacement mechanism includes: a rotating part rotatably arranged on the machine body, the sliding groove is in an arc shape concentric with the rotating part, and after the rotating part rotates, it drives the crushing head to pass through the inside of the sliding groove; several clamps movably arranged on the rotating part, and the clamps are used to clamp the crushing head.

[0012] Preferably, the rotating part includes: a turntable rotatably arranged on the machine body; several movable disks slidably arranged on the turntable, limiting grooves corresponding to the movable disks are arranged on the turntable, and the clamps are slidably arranged on the movable disks; a return spring arranged on the movable disks.

[0013] Preferably, the replacement mechanism further includes: a positioning groove arranged at the top end of the movable disk; a positioning rod slidably arranged on the machine body, the positioning rod is located above the movable disk close to the mounting seat, and after the positioning rod moves downward, it is inserted into the positioning groove to fix the movable disk; a top plate fixedly connected to the turntable, the top plate is in an arc shape concentric with the turntable, and a bevel edge for pushing the positioning rod to move upward is arranged at the end of the top plate.

[0014] Preferably, the replacement mechanism also includes: a driven plate fixedly connected to the top of the clamp; a push plate fixedly connected to the turntable, and a bevel is provided on the side of the push plate close to the clamp. After the turntable rotates relative to the movable disk, the push plate contacts the driven plate and pushes the clamp to extend outward.

[0015] Preferably, the replacement mechanism also includes: several groups of magnets 1 and 2 fixedly connected to the turntable, the magnets 1 and 2 in the same group are respectively located on both sides of the movable disk; a magnet 3 is arranged at the bottom end of the limit plate, and during the rotation of the turntable, the magnets 1 and 2 move to the bottom of the magnet 3, repel the magnet 3 and push the limit plate up.

[0016] Preferably, a slope is provided on one side of the driven plate close to the mounting seat, and the replacement mechanism also includes a magnetic block four provided on the slope in the driven plate. During the rotation of the turntable, after the magnetic block four moves below the magnetic block three, the magnetic block three repels the magnetic block four and pushes the clamp inward.

[0017] Preferably, a maintaining mechanism for fixing the position of the clamp is provided on the turntable; the maintaining mechanism comprises: a telescopic rod, the upper and lower ends of the telescopic rod are respectively hinged to the movable disk and the clamp, the telescopic rod is arranged in an inclined state between the movable disk and the clamp, and is used to push the telescopic rod to extend an extension spring.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The high molecular polymer processing raw material crushing device described in the present invention is provided with an intermittently rotating crushing barrel matched with a crushing head moving up and down, and a plurality of groups of extension tubes and automatically openable and closed switch components are provided on the periphery of the crushing barrel. During the crushing process, the crushing barrel is in an intermittent flipping state, and the raw materials in the crushing barrel can be flipped, thereby improving the crushing effect, and during the flipping process, the crushing head is separated from the crushing barrel, reducing the workload of the crushing barrel rotation, thereby reducing energy consumption, and except for the extension tube at the bottom, there is no crushing head in the other extension tubes, thereby avoiding the problem of the raw material being stuck in the gap between the extension tube and the crushing head and affecting the movement of the crushing head, and the use effect is better.

[0020] 2. The high molecular polymer processing raw material crushing device described in the present invention arranges a replacement mechanism next to the mounting seat, and arranges a movable disk and a clamp in the turntable. The rotating part is rotated to move the old crushing head out of the mounting seat, and at the same time, the crushing head to be used is moved into the mounting seat, so that the replacement work can be completed quickly, eliminating the trouble of disassembling and replacing the crushing head after shutdown, thereby improving work efficiency.

[0021] 3. The high molecular polymer processing raw material crushing device described in the present invention, when in use, by setting a replacement mechanism to cooperate with the crushing mechanism, only the rotation of the turntable needs to be controlled to automatically realize the disassembly, replacement and installation of the crushing head in the mounting seat. Compared with the traditional method, it saves the trouble of setting up multiple sets of electrical systems for controlling the limit plates and the extension and retraction of the clamps in the turntable. It not only has a high degree of automation, but also simplifies the structure and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention;

[0024] Figure 2 It is the front view of the internal structure of the body;

[0025] Figure 3 This is an exploded view of the crushing barrel and crushing mechanism;

[0026] Figure 4 is a bottom view of the switch assembly;

[0027] Figure 5 It is a schematic diagram of the matching structure of a single turntable and a mounting seat;

[0028] Figure 6 It is the exploded view of the turntable, movable plate and fixture;

[0029] Figure 7 This is an exploded view of the mounting base, limit plate and crushing head;

[0030] In the figure: 1. body; 2. crushing cylinder; 21. cylinder cover; 3. crushing mechanism; 31. extension tube; 32. switch assembly; 321. sealing plate; 322. tension spring; 323. dial plate; 33. mounting seat; 331. slide groove; 34. crushing head; 341. limit block; 342; 35. limit plate; 36. downward pressure spring; 4. replacement mechanism; 41. clamp; 411. driven plate; 42. turntable; 421. limit groove; 422. top plate; 423. push plate; 43. movable disk; 431. reset spring; 432. positioning groove; 44. positioning rod; 45. magnet one; 46. magnet two; 47. magnet three; 48. magnet four; 5. maintaining mechanism; 51. telescopic rod; 52. extension spring. DETAILED DESCRIPTION

[0031] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0032] Embodiment 1

[0033] like Figure 1-3 As shown, a high molecular polymer processing raw material crushing device according to an embodiment of the present invention comprises a body 1, a crushing barrel 2 is rotatably provided on the body 1, the interior of the crushing barrel 2 is used to place the raw materials to be crushed, a barrel cover 21 is provided at the end of the crushing barrel 2, and a plurality of crushing mechanisms 3 are provided on the body 1;

[0034] The crushing mechanism 3 includes: an extension tube 31 evenly distributed in an annular manner on the crushing barrel 2; a switch assembly 32 movably arranged in the extension tube 31, and the switch assembly 32 is used to control the opening and closing of the extension tube 31; a mounting seat 33 slidably arranged on the body 1, and a crushing head 34 is arranged in the mounting seat 33, and the crushing head 34 is located above the crushing barrel 2. After the mounting seat 33 moves downward, it drives the crushing head 34 to pass through the top extension tube 31 into the interior of the crushing barrel 2 to crush the raw materials in the crushing barrel 2.

[0035] Specifically, the structure of the crushing head 34 can adopt the push rod and crushing head assembly used in the patent document with publication number CN116001146B. The number of extension tubes 31 distributed in the same group of annular shapes is preferably but not limited to an odd number, so that when the crushing head 34 enters the crushing barrel 2 for crushing, the pressure generated is mainly concentrated on the inner bottom wall of the barrel rather than the extension tube 31 and the switch assembly 32, so as to reduce the workload of the switch assembly 32; a plurality of crushing heads 34 are distributed above the crushing barrel 2 along the axial direction of the crushing barrel 2. Initially, each switch assembly 32 closes the extension tube 31 to prevent the raw material from sliding out through the extension tube 31, and the crushing head 34 is located above the crushing barrel 2.

[0036] When crushing the waste plastic raw materials processed by high molecular polymers, open the barrel cover 21, put the raw materials into the crushing barrel 2, and then close the barrel cover 21. Drive the crushing head 34 to rotate intermittently by means of a motor or the like. When the extension tube 31 moves to the top, the crushing barrel 2 stops rotating, and start the switch assembly 32 to open the extension tube 31 at the top. Drive the mounting seat 33 downward by means of hydraulic drive or the like, and the mounting seat 33 drives the crushing head 34 to pass through the extension tube 31 at the top and enter the crushing barrel 2 to squeeze and crush the raw materials. Then, start the crushing head 34 to move to the top of the extension tube 31, start the crushing barrel 2 to rotate and close the extension tube 31 at the top, until the next extension tube 31 moves to the top and opens, and repeat the above actions to continue the crushing work until the crushing work is completed. During the crushing process, the crushing drum 2 is in an intermittent flipping state, and the raw materials in the crushing drum 2 can be flipped, thereby improving the crushing effect. During the flipping process, the crushing head 34 is separated from the crushing drum 2, reducing the workload of the rotation of the crushing drum 2, thereby reducing energy consumption. Except for the extension tube 31 at the bottom, there is no crushing head 34 in the remaining extension tubes 31, avoiding the problem of raw materials getting stuck in the gap between the extension tube 31 and the crushing head 34 and affecting the movement of the crushing head 34, and achieving a better use effect.

[0037] like Figure 2-4 As shown, the switch assembly 32 includes: a sealing plate 321 slidably inserted in the extension tube 31, and the longitudinal section of the sealing plate 321 is T-shaped; a tension spring 322 for pushing the sealing plate 321 to be inserted into the extension tube 31; and a paddle 323 provided on the body 1. During the rotation of the crushing cylinder 2, the paddle 323 contacts the sealing plate 321 at the top and drives the sealing plate 321 to move, so that the extension tube 31 at the top is opened.

[0038] Specifically, the two ends of the tension spring 322 are connected to the sealing plate 321 and the extension tube 31 respectively. During the rotation of the crushing barrel 2, the position of the paddle plate 323 does not change, and the extension tube 31 never contacts the paddle plate 323. The sealing plate 321 contacts and separates from the paddle plate 323. Initially, the sealing plate 321 is inserted into the extension tube 31 under the action of the tension spring 322 to seal and close the extension tube 31. Figure 2Taking the top extension tube 31 as an example for illustration, when the crushing cylinder 2 rotates clockwise, before the extension tube 31 moves to the top, the sealing plate 321 contacts the dial plate 323. The sealing plate 321 is blocked by the dial plate 323 and moves leftward relative to the extension tube 31. After the extension tube 31 moves to the top, the sealing plate 321 moves leftward until the extension tube 31 is completely opened so that the crushing head 34 can pass through the extension tube 31. After the crushing cylinder 2 continues to rotate, the sealing plate 321 separates from the dial plate 323 and closes the extension tube 31 again under the action of the tension spring 322. In this way, during the rotation of the crushing cylinder 2, the automatic opening and closing function of the top extension tube 31 is realized.

[0039] As Figure 2-7 shown, a limit block 341 is provided at the top end of the crushing head 34, and a sliding groove 331 is provided inside the mounting seat 33; the crushing mechanism 3 further includes: a limit plate 35 slidably arranged in the mounting seat 33, the limit plate 35 is in a "冂" shape, and after the limit plate 35 moves downward, it blocks the outside of the limit block 341 to fix the crushing head 34 in the mounting seat 33; a downward pressure spring 36 arranged on the mounting seat 33 for pushing the limit plate 35 to move downward.

[0040] Specifically, the crushing head 34 includes a main rod and a limit block 341. The limit block 341 is fixedly connected to the top end of the main rod, and the size of the limit block 341 is larger than the outer diameter of the main rod. The two ends of the downward pressure spring 36 are respectively connected to the mounting seat 33 and the limit plate 35. When installing the crushing head 34, first lift the limit plate 35 upward, then move the limit block 341 in the crushing head 34 into the sliding groove 331. The left and right sides of the crushing head 34 are blocked by the left and right side walls of the sliding groove 331. Then lower the limit plate 35. After the limit plate 35 moves downward, it inserts into the sliding groove 331 and blocks the front and back sides of the crushing head 34. In this way, the crushing head 34 is fixed in the mounting seat 33, and the installation of the crushing head 34 is completed.

[0041] As Figure 5-6 shown, it further includes several groups of replacement mechanisms 4. The replacement mechanism 4 includes: a rotating member rotatably arranged on the machine body 1, the sliding groove 331 is in an arc shape concentric with the rotating member, and after the rotating member rotates, it drives the crushing head 34 to pass through the sliding groove 331; several clamps 41 movably arranged on the rotating member, and the clamps 41 are used for clamping the crushing head 34.

[0042] Specifically, the rotating parts are distributed in a one-to-one correspondence with the mounting seats. When the crushing head 34 is worn or a different type of crushing head 34 is switched, the crushing head 34 in the mounting seat 33 needs to be replaced. In order to achieve rapid replacement, a rotating part is provided. Take the turntable 42 with two sets of clamps 41 as an example for explanation. The clamp 41 on the right side clamps the crushing head 34 to be used. After the clamp 41 on the left side is extended and clamps the crushing head 34 in the mounting seat 33, the rotating part is rotated to swap the positions of the two crushing heads 34, and the replacement work can be quickly completed, eliminating the trouble of disassembling and replacing the crushing head 34 after shutdown, thereby improving work efficiency.

[0043] A U-shaped groove for clamping the crushing head 34 is provided inside the clamp 41, and an elastic rubber pad can be provided on the inner wall of the U-shaped groove to improve the clamping effect; it should be noted that in order to further improve the clamping effect and prevent the crushing head 34 from sliding down from the clamp 41, a retaining ring 342 can also be provided on the crushing head 34, and the retaining ring 342 is located below the mounting seat 33. When the clamp 41 clamps the crushing head 34, the retaining ring 342 abuts against the top of the clamp 41 to prevent the crushing head 34 from sliding down.

[0044] like Figure 5-6 As shown, the rotating part includes: a turntable 42 rotatably arranged on the body 1; a plurality of movable disks 43 slidably arranged on the turntable 42, the turntable 42 is provided with a limiting groove 421 corresponding to the movable disk 43, the clamp 41 is slidably arranged on the movable disk 43; and a reset spring 431 is arranged on the movable disk 43.

[0045] Specifically, the top of the movable disk 43 is not higher than the top of the turntable 42, the two ends of the reset spring 431 are respectively connected to the movable disk 43 and the inner wall of the limiting groove 421, the sliding trajectory of the turntable 42 is an arc trajectory concentric with the turntable 42, and the clamp 41 can slide back and forth relative to the movable disk 43 along the radial direction of the turntable 42. The movement of the clamp 41 toward the axial direction of the turntable 42 is inward movement, and vice versa is outward movement.

[0046] The mounting seat 33 and the crushing head 34 never contact the clamp 41 during the process of moving up and down. Initially, the clamp 41 on the left is aligned with the crushing head 34 of the mounting seat 33, and the clamp 41 on the left is retracted in the movable disk 43 to avoid interfering with the movement of the crushing head 34. The clamp 41 on the right extends outward, and the crushing head 34 to be used is installed in the clamp 41 on the right. The rotation trajectory of the crushing head 34 extended on the right is consistent with the slide groove 331.

[0047] When replacing the crushing head 34, the mounting seat 33 is moved up and reset, and the clamp 41 on the left is moved to the left and extended. After the clamp 41 moves to the left, it clamps the crushing head 34, and the limit plate 35 is moved upward to release the limiting effect of the limit plate 35 on the crushing head 34. Then the turntable 42 is rotated 180°. After the crushing head 34 to be used rotates, the limit block 341 is directly moved to the inside of the slide groove 331 in the mounting seat 33. After the limit plate 35 is lowered, the new crushing head 34 is fixed in the mounting seat 33. In this way, the replacement of the crushing head 34 can be quickly completed.

[0048] It should be noted that, according to specific circumstances, the size of the turntable 42 and the number of movable plates 43 and clamps 41 can be adjusted, and a greater number of crushing heads 34 can be installed on the turntable 42 .

[0049] like Figure 3-6 As shown, the replacement mechanism 4 also includes: a positioning groove 432 arranged at the top of the movable disk 43; a positioning rod 44 slidably arranged on the body 1, the positioning rod 44 is located above the movable disk 43 near the mounting seat 33, and the positioning rod 44 is inserted into the positioning groove 432 after moving down to fix the movable disk 43; a top plate 422 fixedly connected to the turntable 42, the top plate 422 is in an arc shape concentric with the turntable 42, and the end of the top plate 422 is provided with a beveled edge for pushing the positioning rod 44 to move upward.

[0050] Specifically, the top of the movable disk 43 is preferably flush with the top of the turntable 42; initially, the positioning rod 44 moves downward and is inserted into the positioning groove 432 in the left movable disk 43, so that the left movable disk 43 and the clamp 41 remain in a fixed position, so that the left clamp 41 can be directly stuck on the outside of the crushing head 34 in the mounting seat 33 after being extended, and the crushing head 34 is clamped; of course, a spring member can also be provided on the machine body 1 to push the positioning rod 44 downward, further ensuring that the positioning rod 44 can be inserted into the positioning groove 432.

[0051] exist Figure 5 and Figure 6 When replacing the crushing head 34 , the turntable 42 is started to rotate counterclockwise, and the top plate 422 on the left side contacts the positioning rod 44 and pushes the positioning rod 44 upward, so that the positioning rod 44 is separated from the positioning groove 432 .

[0052] like Figure 5-6 As shown, the replacement mechanism 4 also includes: a driven plate 411 fixedly connected to the top of the clamp 41; a push plate 423 fixedly connected to the turntable 42, and a bevel is provided on the side of the push plate 423 close to the clamp 41. After the turntable 42 rotates relative to the movable disk 43, the push plate 423 contacts the driven plate 411 and pushes the clamp 41 to extend outward.

[0053] Specifically, the driven plate 411 extends to the outside of the movable disk 43. When replacing the crushing head 34, the turntable 42 is started to rotate counterclockwise. Since the movable disk 43 on the left is fixed by the positioning rod 44, after the turntable 42 rotates, the push plate 423 on the left contacts the driven plate 411 in the left clamp 41, pushing the driven plate 411 and the clamp 41 to move left and extend. After the clamp 41 extends, it clamps the crushing head 34 in the mounting seat 33.

[0054] like Figure 5-7 As shown, the replacement mechanism 4 also includes: a plurality of groups of magnets 45 and magnets 46 fixedly connected to the turntable 42, the magnets 45 and magnets 46 in the same group are respectively located on both sides of the movable disk 43; a magnet 47 provided at the bottom end of the limit plate 35, during the rotation of the turntable 42, the magnets 45 and magnets 46 move to the bottom of the magnet 47, repel the magnet 47 and push the limit plate 35 upward.

[0055] Specifically, for the left clamp 41, magnetic block 1 45 and magnetic block 2 46 are respectively located on the front and rear sides of the limit plate 35, and the magnetic force between magnetic block 1 45 and magnetic block 2 46 and magnetic block 3 47 is relatively small. The limit plate 35 is at the bottom end of its moving range, fixing the crushing head 34 in the mounting seat 33.

[0056] When replacing the crushing head 34, after the left clamp 41 clamps the crushing head 34 in the mounting seat 33, the turntable 42 continues to rotate counterclockwise, and the rear magnetic block 2 46 rotates to approach the bottom of the magnetic block 3 47 and repels the magnetic block 3 47, and the repulsive force pushes the limit plate 35 to move upward, releasing the limit state of the crushing rod in the mounting seat 33, and then, the turntable 42 and the movable plate 43 rotate counterclockwise to remove the broken lock head from the mounting seat 33;

[0057] The turntable 42 continues to rotate, and after the left magnetic block 2 46 is separated from the magnetic block 3 47, the downward pressure spring 36 pushes the limit plate 35 to move down and reset; after the right clamp 41 and the standby crushing head 34 rotate to approach the mounting seat 33, the corresponding magnetic block 1 45 first repels the magnetic block 3 47, pushing the limit plate 35 to move up, and then the standby crushing head 34 moves to the mounting seat 33. At this time, the turntable 42 rotates 180°, and the limit plate 35 is located between the magnetic block 1 45 and the magnetic block 2 46. The limit plate 35 moves down and resets, fixing the standby crushing head 34 in the mounting seat 33, and the positioning rod 44 automatically moves down and inserts into the positioning groove 432 to fix the movable disk 43; in this way, the replacement and installation of the crushing head 34 are completed.

[0058] It should be noted that the above functions can be enabled or disabled by selecting the sizes and positions of the first magnetic block 45, the second magnetic block 46, and the third magnetic block 47.

[0059] like Figure 5-7 As shown, a slope is provided on one side of the driven plate 411 close to the mounting seat 33, and the replacement mechanism 4 also includes a magnetic block four 48 provided on the slope of the driven plate 411. During the rotation of the turntable 42, after the magnetic block four 48 moves to the bottom of the magnetic block three 47, the magnetic block three 47 repels the magnetic block four 48 and pushes the clamp 41 to move inward.

[0060] Specifically, after the crushing head 34 is installed on the mounting seat 33, the clamp 41 extends out and is located directly below the mounting seat 33, the limit plate 35 moves downward, and the magnetic block three 47 at the bottom of the limit plate 35 is close to the magnetic block four 48 on the clamp 41. The repulsive force between the magnetic block three 47 and the magnetic block four 48 pushes the clamp 41 to move inward, so that the clamp 41 is separated from the crushing head 34 and shrinks to the inside of the movable disk 43, and the clamp 41 on the left side is staggered from the mounting seat 33 and the crushing head 34.

[0061] Embodiment 2

[0062] like Figure 5-6 As shown, in contrast to Example 1, another embodiment of the present invention is as follows: a maintaining mechanism 5 for fixing the position of the clamp 41 is provided on the rotating disk 42;

[0063] The maintaining mechanism 5 includes: a telescopic rod 51, the upper and lower ends of which are respectively hinged to the movable disk 43 and the clamp 41, and the telescopic rod 51 is arranged between the movable disk 43 and the clamp 41 in an inclined state, and a stretching spring 52 is used to push the telescopic rod 51 to stretch and extend.

[0064] Specifically, after the clamp 41 is extended or retracted, the telescopic rod 51 is driven to deflect. After the telescopic rod 51 is deflected, it maintains a stable tilt under the push of the extension spring 52, so that the clamp 41 remains in a fixed position after being extended or retracted, thereby improving the position stability of the clamp 41. The position of the right clamp 41 is stable after being extended, which can ensure that after the rotating disk 42 rotates, the standby crushing rod in the right clamp 41 can be smoothly moved to the slide groove 331, and the position of the left clamp 41 is stable after being retracted, which can ensure that it does not touch the working mounting seat 33 and crushing head 34.

[0065] It should be noted that the repulsive force between magnet 1 45 , magnet 2 46 and magnet 3 47 is greater than the downward pressure of the downward spring 36 on the limit plate 35 , the repulsive force between magnet 48 and magnet 3 47 is greater than the force of the extension spring 52 on the clamp 41 .

[0066] Working principle: When crushing the waste plastic raw materials of high molecular polymer processing, open the barrel cover 21, put the raw materials into the crushing barrel 2, and then close the barrel cover 21, and drive the crushing head 34 to rotate intermittently clockwise by means of a motor or the like. When the extension tube 31 moves to the top, the paddle 323 pulls the top sealing plate 321 to the left, so that the top extension tube 31 is fully opened; the crushing barrel 2 stops rotating, and drives the mounting seat 33 to move downward by means of hydraulic drive or the like, and the mounting seat 33 drives the crushing head 34 to pass through the top extension tube 31 into the crushing barrel 2 to squeeze and crush the raw materials;

[0067] After the crushing head 34 is started to move to the top of the extension tube 31, the crushing barrel 2 is started to continue to rotate, the sealing plate 321 at the top is separated from the paddle plate 323 and moved back to reset under the action of the tension spring 322, the extension tube 31 at the top is automatically closed, and then the next extension tube 31 moves to the top and opens, and the above actions are repeated to continue the crushing work until the crushing work is completed.

[0068] When the crushing head 34 needs to be replaced during operation, the mounting seat 33 is moved upward and reset, and the turntable 42 is started to rotate counterclockwise. Since the movable plate 43 on the left is fixed by the positioning rod 44, after the turntable 42 rotates, the push plate 423 on the left contacts the driven plate 411 in the left clamp 41, pushing the driven plate 411 and the clamp 41 to move leftward and extend. After the clamp 41 extends, it clamps the crushing head 34 in the mounting seat 33.

[0069] The turntable 42 continues to rotate counterclockwise, and the second magnetic block 46 on the left side rotates to the bottom of the third magnetic block 47 and repels the third magnetic block 47. The repulsive force pushes the limit plate 35 to move upward, releasing the limit state of the breaking rod in the mounting seat 33. Then, the turntable 42 drives the movable plate 43 on the left side to rotate counterclockwise, so that the broken lock head can be removed from the mounting seat 33.

[0070] The turntable 42 continues to rotate, and after the magnetic block 2 46 on the left is separated from the magnetic block 3 47, the downward pressure spring 36 pushes the limit plate 35 to move down and reset; after the clamp 41 on the right and the standby crushing head 34 rotate to be close to the mounting seat 33, the corresponding clamp 41 first repels the magnetic block 3 47, pushing the limit plate 35 to move up, and then the standby crushing head 34 moves to the mounting seat 33. At this time, the turntable 42 rotates 180°, and the limit plate 35 is located between the magnetic block 1 45 and the magnetic block 2 46. The limit plate 35 moves down and resets, fixing the standby crushing head 34 on the mounting seat The movable plate 43 is fixed to the seat 33, and the positioning rod 44 automatically moves down and is inserted into the positioning groove 432 to fix the movable plate 43; in this way, the quick replacement and installation and fixing of the crushing head 34 are completed. When the device is in use, it only needs to control the rotation of the turntable 42 to automatically realize the removal, replacement and installation of the crushing head 34 in the mounting seat 33. Compared with the traditional method, it saves the trouble of setting up multiple sets of electrical systems for controlling the extension and retraction of the limit plate 35 and the clamp 41 in the turntable 42. It not only has a high degree of automation, but also simplifies the structure and is easy to use.

[0071] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A high molecular polymer processing raw material crushing device, comprising a body (1), a crushing barrel (2) rotatably provided on the body (1), the interior of the crushing barrel (2) being used to place the raw material to be crushed, and a barrel cover (21) being provided at the end of the crushing barrel (2), characterized in that: The machine body (1) is provided with a plurality of groups of crushing mechanisms (3), and the crushing mechanisms (3) include: Extension tubes (31) uniformly distributed in an annular manner on the crushing cylinder (2); a switch assembly (32) movably arranged in the extension tube (31), the switch assembly (32) being used to control the opening and closing of the extension tube (31); A mounting seat (33) is slidably mounted on the machine body (1), a crushing head (34) is arranged in the mounting seat (33), and the crushing head (34) is located above the crushing barrel (2). When the mounting seat (33) moves downward, the crushing head (34) is driven to pass through the extension tube (31) and enter the crushing barrel (2) to crush the raw materials in the crushing barrel (2); A slide groove (331) is provided inside the mounting seat (33); It also includes several groups of replacement mechanisms (4), wherein the replacement mechanisms (4) include: The rotating member provided on the machine body (1) is rotated, the slide groove (331) is in an arc shape concentric with the rotating member, and after the rotating member rotates, the crushing head (34) is driven to pass through the slide groove (331); a plurality of clamps (41) movably arranged on the rotating member, the clamps (41) being used to clamp the crushing head (34); The rotating member comprises: Rotate a rotating disk (42) disposed on the machine body (1): a plurality of movable disks (43) slidably arranged on the rotating disk (42), the rotating disk (42) being provided with limiting grooves (421) corresponding to the movable disks (43), and the clamp (41) being slidably arranged on the movable disks (43); a return spring (431) provided on the movable disk (43); The replacement mechanism (4) further comprises: A positioning groove (432) provided at the top end of the movable plate (43); A positioning rod (44) slidably disposed on the machine body (1), the positioning rod (44) being located above the movable disk (43) near the mounting seat (33), and the positioning rod (44) being inserted into the positioning groove (432) after being moved downward to fix the movable disk (43); a top plate (422) fixedly connected to the rotating disk (42), the top plate (422) being in an arc shape concentric with the rotating disk (42), and an end of the top plate (422) being provided with a beveled edge for pushing the positioning rod (44) upward; The replacement mechanism (4) further comprises: A driven plate (411) fixedly connected to the top end of the clamp (41); A push plate (423) is fixedly connected to the rotating disk (42), and a bevel is provided on a side of the push plate (423) close to the clamp (41). After the rotating disk (42) rotates relative to the movable disk (43), the push plate (423) contacts the driven plate (411) and pushes the clamp (41) to extend outward.

2. The high molecular polymer processing raw material crushing device according to claim 1, characterized in that: The switch assembly (32) comprises: a sealing plate (321) slidably inserted into the extension tube (31), wherein the longitudinal section of the sealing plate (321) is in a T-shape; A tension spring (322) for pushing the sealing plate (321) to be inserted into the extension tube (31); The deflector plate (323) provided on the body (1). During the rotation of the crushing cylinder (2), after the deflector plate (323) contacts the sealing plate (321), it drives the sealing plate (321) to move, so that the extension pipe (31) is opened.

3. The high molecular polymer processing raw material crushing device according to claim 2, characterized in that: A limiting block (341) is provided at the top of the crushing head (34). The crushing mechanism (3) further includes: A limiting plate (35) slidably provided in the mounting seat (33). The limiting plate (35) is in a U shape. After the limiting plate (35) moves downward, it blocks the outside of the limiting block (341) to fix the crushing head (34) in the mounting seat (33); A downward pressure spring (36) provided on the mounting seat (33) for pushing the limiting plate (35) to move downward.

4. The high molecular polymer processing raw material crushing device according to claim 3, characterized in that: The replacement mechanism (4) further includes: Several groups of magnetic blocks one (45) and magnetic blocks two (46) fixedly connected to the turntable (42). The magnetic blocks one (45) and the magnetic blocks two (46) in the same group are respectively located on both sides of the movable disk (43); A magnetic block three (47) provided at the bottom end of the limiting plate (35). During the rotation of the turntable (42), after the magnetic blocks one (45) and the magnetic blocks two (46) move below the magnetic block three (47), they repel the magnetic block three (47) and push the limiting plate (35) to move upward.

5. The high molecular polymer processing raw material crushing device according to claim 4, characterized in that: One side of the driven plate (411) close to the mounting seat (33) is provided with a slope. The replacement mechanism (4) further includes a magnetic block four (48) provided on the slope of the driven plate (411). During the rotation of the turntable (42), after the magnetic block four (48) moves below the magnetic block three (47), the magnetic block three (47) repels the magnetic block four (48) and pushes the fixture (41) to move inward.

6. The high molecular polymer processing raw material crushing device according to claim 5, characterized in that: A maintaining mechanism (5) for fixing the position of the fixture (41) is provided on the turntable (42). The maintaining mechanism (5) includes: A telescopic rod (51). The upper and lower ends of the telescopic rod (51) are respectively movably hinged to the movable disk (43) and the fixture (41). The telescopic rod (51) is obliquely provided between the movable disk (43) and the fixture (41), A stretching spring (52) for pushing the telescopic rod (51) to stretch and extend.

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