Degradable TPU (thermoplastic polyurethane) melting mixer

Abstract

The utility model discloses a degradable TPU (Thermoplastic Polyurethanes) melting mixer, which belongs to the technical field of TPU melting, aims at solving the problems that the distance between two crushing rollers cannot be adjusted according to specific actual requirements and materials conforming to particle sizes cannot be circularly crushed, and comprises a box body, an adjusting mechanism, a screening mechanism, a push plate mechanism and a circulating fan, the adjusting mechanism is arranged on the upper middle portion of the interior of the box body, the screening mechanism is arranged below the adjusting mechanism, the push plate mechanism is arranged in the screening mechanism, the circulating fan is arranged in front of the exterior of the screening mechanism, the first motor is fixedly connected to the left side of the box body, and the threaded rod is connected to the output end of the first motor. According to the utility model, the distance between the movable crushing roller and the fixed crushing roller can be adjusted through the arranged adjusting mechanism, so that the device is suitable for the crushing requirements of materials with different sizes, and the application range of the device is widened.

Description

Technical Field

[0001] The utility model belongs to the technical field of TPU melting, and particularly relates to a degradable TPU melting mixer. Background Art

[0002] TPU is a thermoplastic polyurethane elastomer material. This material has many unique properties, making it very useful in many applications. TPU has excellent abrasion resistance, making it suitable for components that require frequent contact or friction. TPU has excellent tolerance to many oils and chemicals. TPU is not easily eroded by moisture and can maintain its performance even when in contact with water for a long time. TPU has excellent elasticity and toughness and can remain soft and elastic within a wide temperature range. At low temperatures, TPU can still maintain good elasticity and toughness. TPU can be processed like plastic, such as injection molding, extrusion, calendering, etc., facilitating the manufacture of various complex-shaped components.

[0003] In the prior art, there is a plastic particle melting and mixing device with the patent publication number of CN220446867U. When the above patent is used, it can realize multiple cyclic crushing of plastic masterbatch by two rotating crushers. The crushing effect is good and thorough, greatly improving the melting efficiency of plastic particles and the production efficiency. And the structure is simple and the use is convenient, greatly reducing the floor area of the device, as well as the manufacturing cost and use cost of the device. However, there are still the following deficiencies in actual use: Practically speaking, when the device crushes materials, it cannot adjust the distance between the two crushing rollers according to specific actual needs, reducing the applicable range of the device. Moreover, when performing cyclic crushing on materials, the materials that meet the particle size are also crushed cyclically, increasing the crushing cost and affecting the crushing efficiency of the materials.

[0004] Therefore, a degradable TPU melting mixer is needed to solve the problems in the prior art that the distance between the two crushing rollers cannot be adjusted according to specific actual needs and the materials that meet the particle size are also crushed cyclically. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a degradable TPU melting mixer to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A degradable TPU melting mixer includes a box body, an adjusting mechanism, a screening mechanism, a push plate mechanism, and a circulating fan. The adjusting mechanism is arranged in the upper middle part of the box body, the screening mechanism is arranged below the adjusting mechanism, the push plate mechanism is arranged inside the screening mechanism, and the circulating fan is arranged in front of the outside of the screening mechanism.

[0007] The adjusting mechanism consists of a first motor, a threaded rod, a threaded block, a limiting block, a connecting shaft, a second motor, a movable crushing roller and a fixed crushing roller. The first motor is fixedly connected to the left side of the box body. The threaded rod is connected to the output end of the first motor. The threaded block is threadedly connected to the outside of the threaded rod. The limiting block is slidably connected to the inside of the left plate of the box body, and the limiting block is fixedly connected to the threaded block. The connecting shaft is rotatably connected to the right side of the limiting block. The second motor is connected to the right side of the connecting shaft.

[0008] It should be noted in the solution that a connecting plate is fixedly connected below the second motor, and the connecting plate is slidably connected to the right plate of the box body. The movable crushing roller is fixedly connected to the outside of the connecting shaft. A fixed crushing roller is arranged in front of the movable crushing roller, and a rotating shaft is fixedly connected to the inside of the fixed crushing roller, and a rotating motor is connected to the right side of the rotating shaft.

[0009] Furthermore, it is worth noting that the screening mechanism consists of a cam, an arc plate, a slider, a connecting rod, a moving frame, a sieve plate, a connecting block, a vertical rod and a spring. The cams are symmetrically and fixedly connected to the outside of both sides of the rotating shaft inside the fixed crushing roller. The arc plate is arranged below the cam. The slider is fixedly connected to one side of the arc plate close to the inner wall of the box body, and a chute adapted to the slider is opened on the inner wall of the box body.

[0010] Even further, it should be noted that the connecting rod is fixedly connected below the arc plate. The moving frame is fixedly connected below the arc plate. The sieve plate is fixedly installed on the inner bottom surface of the moving frame. The connecting blocks are symmetrically and fixedly connected to the left and right sides of the moving frame.

[0011] As a preferred implementation manner, a vertical groove adapted to the connecting block is opened inside the box body. The vertical rod is fixedly connected between the upper and lower surfaces of the vertical groove. The connecting block is slidably connected to the outside of the vertical rod. The spring is fixedly connected between the connecting block and the bottom surface of the vertical groove and is sleeved on the outside of the vertical rod.

[0012] As a preferred implementation manner, the pushing plate mechanism consists of a third motor, a lead screw, a moving block, a limiting rod, a moving plate and a telescopic feed pipe. The third motor is fixedly connected to the right side inside the moving frame. The lead screw is connected to the output end of the third motor. The limiting rod is fixedly connected to the left side inside the moving frame.

[0013] As a preferred implementation manner, there are two moving blocks. The right moving block is threadedly connected to the outside of the lead screw. The left moving block is slidably connected to the outside of the limiting rod. The moving plate is fixedly connected between the two moving blocks. A circulation groove is opened at the front end of the moving frame. The telescopic feed pipe is fixedly installed above the circulation groove.

[0014] As a preferred embodiment, feeding pipes are fixedly connected to the upper and lower sides of the circulation fan respectively, and the bottom end of the lower feeding pipe is connected to the top surface of the telescopic feeding pipe.

[0015] Compared with the prior art, a degradable TPU melting mixer provided by the present utility model has at least the following beneficial effects:

[0016] (1) By setting the adjusting mechanism, the distance between the movable crushing roller and the fixed crushing roller can be adjusted, so that the device is suitable for the crushing requirements of materials of different sizes, and the application range of the device is improved.

[0017] (2) By setting the screening mechanism, through the rotation of the cam, the sieve plate below the movable frame vibrates up and down, increasing the screening of the materials, improving the screening effect, and only crushing the materials that do not meet the size requirements again, thus improving the efficiency of the material crushing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic perspective view structure diagram of the present utility model;

[0019] Figure 2 is a schematic internal structure diagram of the box body of the present utility model;

[0020] Figure 3 is a schematic structure diagram of the adjusting mechanism of the present utility model;

[0021] Figure 4 is a schematic structure diagram of the screening mechanism of the present utility model;

[0022] Figure 5 is a schematic structure diagram of the push plate mechanism of the present utility model.

[0023] In the figure: 1, box body; 2, adjusting mechanism; 3, screening mechanism; 4, push plate mechanism; 5, circulation fan; 201, first motor; 202, threaded rod; 203, threaded block; 204, limit block; 205, connecting shaft; 206, second motor; 207, movable crushing roller; 208, fixed crushing roller; 301, cam; 302, arc plate; 303, slider; 304, connecting rod; 305, movable frame; 306, sieve plate; 307, connecting block; 308, vertical rod; 309, spring; 401, third motor; 402, lead screw; 403, moving block; 404, limit rod; 405, moving plate; 406, circulation tank; 407, telescopic feeding pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0024] The following further describes the present utility model in conjunction with embodiments.

[0025] Please refer to Figures 1-5, the present utility model provides a degradable TPU melting mixer, which includes a box body 1, an adjusting mechanism 2, a screening mechanism 3, a push plate mechanism 4 and a circulating fan 5. The adjusting mechanism 2 is arranged in the upper middle part inside the box body 1, the screening mechanism 3 is arranged below the adjusting mechanism 2, the push plate mechanism 4 is arranged inside the screening mechanism 3, and the circulating fan 5 is arranged in front of the outside of the screening mechanism 3.

[0026] The adjusting mechanism 2 is composed of a first motor 201, a threaded rod 202, a threaded block 203, a limiting block 204, a connecting shaft 205, a second motor 206, a movable crushing roller 207 and a fixed crushing roller 208. The first motor 201 is fixedly connected to the left side of the box body 1, the threaded rod 202 is connected to the output end of the first motor 201, the threaded block 203 is threadedly connected to the outside of the threaded rod 202, the limiting block 204 is slidably connected to the inside of the left plate of the box body 1, and the limiting block 204 is fixedly connected to the threaded block 203. The connecting shaft 205 is rotatably connected to the right side of the limiting block 204, and the second motor 206 is connected to the right side of the connecting shaft 205.

[0027] Further as Figure 1 , Figure 2 and Figure 3 shown, it is worth specifically explaining that a connecting plate is fixedly connected below the second motor 206, and the connecting plate is slidably connected to the right plate of the box body 1. The movable crushing roller 207 is fixedly connected to the outside of the connecting shaft 205. A fixed crushing roller 208 is arranged in front of the movable crushing roller 207, and a rotating shaft is fixedly connected to the inside of the fixed crushing roller 208, and a rotating motor is connected to the right side of the rotating shaft;

[0028] Control the first motor 201 to drive the threaded rod 202 to rotate. Through the limiting effect of the limiting block 204, prevent the threaded block 203 from moving along with the threaded rod 202, ensure the stable linear movement of the threaded block 203, drive the connecting shaft 205 to move, and at the same time drive the movable crushing roller 207 to move, so as to adjust the distance between the movable crushing roller 207 and the fixed crushing roller 208.

[0029] According to the above working process, it can be known that: by setting the adjusting mechanism 2, the distance between the movable crushing roller 207 and the fixed crushing roller 208 can be adjusted, so that the device is applicable to the crushing requirements of materials of different sizes, and the applicable range of the device is improved.

[0030] Further as Figure 2 , Figure 4 and Figure 5As shown in the figure, it is worth specifically explaining that the screening mechanism 3 is composed of a cam 301, an arc plate 302, a slider 303, a connecting rod 304, a moving frame 305, a sieve plate 306, a connecting block 307, a vertical rod 308 and a spring 309. The cam 301 is symmetrically and fixedly connected to the outer sides of both sides of the rotating shaft inside the fixed crushing roller 208. The arc plate 302 is arranged below the cam 301. The slider 303 is fixedly connected to one side of the arc plate 302 close to the inner wall of the box body 1, and a chute adapted to the slider 303 is provided on the inner wall of the box body 1.

[0031] Further, as shown in Figure 2 , Figure 4 and Figure 5 it is worth specifically explaining that the connecting rod 304 is fixedly connected below the arc plate 302, the moving frame 305 is fixedly connected below the arc plate 302, the sieve plate 306 is fixedly installed on the inner bottom surface of the moving frame 305, the connecting blocks 307 are symmetrically and fixedly connected to the left and right sides of the moving frame 305. Vertical grooves adapted to the connecting blocks 307 are provided inside the box body 1. The vertical rod 308 is fixedly connected between the upper and lower surfaces of the vertical grooves. The connecting block 307 is slidably connected to the outside of the vertical rod 308. The spring 309 is fixedly connected between the connecting block 307 and the bottom surface of the vertical groove and is sleeved on the outside of the vertical rod 308;

[0032] When the protruding part of the cam 301 rotates away, the extrusion on the arc plate 302 is released. Under the elastic action of the spring 309, the connecting block 307 is driven to reset and move upward, and at the same time, the moving frame 305 is driven to move upward. This cycle is repeated, causing the sieve plate 306 below the moving frame 305 to vibrate up and down, increasing the screening of the material and improving the screening effect.

[0033] Further, as shown in Figure 2 , Figure 4 and Figure 5 it is worth specifically explaining that the pushing plate mechanism 4 is composed of a third motor 401, a lead screw 402, a moving block 403, a limiting rod 404, a moving plate 405 and a telescopic feeding pipe 407. The third motor 401 is fixedly connected to the right side inside the moving frame 305. The lead screw 402 is connected to the output end of the third motor 401. The limiting rod 404 is fixedly connected to the left side inside the moving frame 305. There are two moving blocks 403. The right moving block 403 is threadedly connected to the outside of the lead screw 402, and the left moving block 403 is slidably connected to the outside of the limiting rod 404. The moving plate 405 is fixedly connected between the two moving blocks 403. A circulation groove 406 is provided at the front end of the moving frame 305. The telescopic feeding pipe 407 is fixedly installed above the circulation groove 406. Feeding pipes are respectively fixedly connected above and below the circulation fan 5, and the bottom end of the lower feeding pipe is connected to the top surface of the telescopic feeding pipe 407;

[0034] Start the circulating fan 5, and make the materials inside the circulating tank 406 enter above the movable crushing roller 207 and the fixed crushing roller 208 through the telescopic feeding pipe 407 for crushing again.

[0035] A melting tank is connected below the box body 1. The melting tank and its internal structure are described in detail in the utility model with the patent publication number CN220446867U, and will not be elaborated here.

[0036] This solution has the following working process: When in use, first adjust the distance between the movable crushing roller 207 and the fixed crushing roller 208 according to the requirements of material crushing. Control the first motor 201 to drive the threaded rod 202 to rotate. Through the limiting effect of the limiting block 204, prevent the threaded block 203 from moving along with the threaded rod 202, ensure the stable linear movement of the threaded block 203, drive the connecting shaft 205 to move, and at the same time drive the movable crushing roller 207 to move, so as to adjust the distance between the movable crushing roller 207 and the fixed crushing roller 208. Then put the materials into the inside of the box body 1 through the feeding port above the box body 1, and let them fall between the movable crushing roller 207 and the fixed crushing roller 208. Start the second motor 206 and the rotating motor to drive the movable crushing roller 207 and the fixed crushing roller 208 to rotate towards each other to crush the materials. The crushed materials fall above the sieve plate 306. The particles that meet the size requirements fall into the inside of the lower melting tank, and the large-particle materials still remain above the sieve plate 306. At the same time, when the rotating shaft rotates, drive the cams 301 on both sides to rotate, exert pressure on the lower arc-shaped plate 302, make the arc-shaped plate 302 move downward, drive the moving frame 305 to move downward through the connecting rod 304, and at the same time squeeze the spring 309 through the connecting block 307. When the protruding part of the cam 301 turns away, relieve the pressure on the arc-shaped plate 302. Under the elastic action of the spring 309, drive the connecting block 307 to reset and move upward, and at the same time drive the moving frame 305 to move upward. Repeat this process to make the sieve plate 306 below the moving frame 305 vibrate up and down, increase the screening of the materials, and improve the screening effect. After the screening is completed, drive the lead screw 402 to rotate through the third motor 401, drive the moving plate 405 to move towards the circulating tank 406 through the moving block 403, gradually push the materials into the inside of the circulating tank 406, start the circulating fan 5, and make the materials inside the circulating tank 406 enter above the movable crushing roller 207 and the fixed crushing roller 208 through the telescopic feeding pipe 407 for crushing again, reducing the crushing cost while improving the crushing efficiency.

[0037] In summary: By setting the adjusting mechanism 2, the distance between the movable crushing roller 207 and the fixed crushing roller 208 can be adjusted, so that the device is applicable to the crushing requirements of materials of different sizes, improving the applicable range of the device; By setting the screening mechanism 3, through the rotation of the cam 301, the sieve plate 306 below the movable frame 305 vibrates up and down, increasing the screening of the materials, improving the screening effect, and only crushing the materials that do not meet the size requirements again, improving the efficiency of the material crushing.

Claims

1. A biodegradable TPU melt mixer, comprising a housing (1), an adjusting mechanism (2), a screening mechanism (3), a push plate mechanism (4) and a circulating fan (5), characterized in that: The regulating mechanism (2) is arranged at the upper middle part of the box body (1), the screening mechanism (3) is arranged below the regulating mechanism (2), the push plate mechanism (4) is arranged inside the screening mechanism (3), and the circulating fan (5) is arranged outside the front part of the screening mechanism (3); The regulating mechanism (2) is composed of a first motor (201), a threaded rod (202), a threaded block (203), a limit block (204), a connecting shaft (205), a second motor (206), a movable crushing roller (207) and a fixed crushing roller (208); the first motor (201) is fixedly connected to the left side of the housing (1); the threaded rod (202) is connected to the output end of the first motor (201); the threaded block (203) is threadedly connected to the outside of the threaded rod (202); the limit block (204) is slidably connected to the inside of the left plate of the housing (1); the limit block (204) is fixedly connected to the threaded block (203); the connecting shaft (205) is rotatably connected to the right side of the limit block (204); and the second motor (206) is connected to the right side of the connecting shaft (205).

2. A degradable TPU melt mixer according to claim 1, characterized in that: A connecting plate is fixedly connected to the lower part of the second motor (206), and the connecting plate is slidably connected to the right plate of the box body (1); the movable crushing roller (207) is fixedly connected to the outside of the connecting shaft (205); a fixed crushing roller (208) is arranged in front of the movable crushing roller (207), and a rotating shaft is fixedly connected to the inside of the fixed crushing roller (208), and a rotating motor is connected to the right side of the rotating shaft.

3. A degradable TPU melt mixer according to claim 1, characterized in that: The screening mechanism (3) is composed of a cam (301), an arc plate (302), a slider (303), a connecting rod (304), a movable frame (305), a screen plate (306), a connecting block (307), a vertical rod (308) and a spring (309); the cam (301) is symmetrically fixedly connected to the outside of two sides of the rotating shaft inside the fixed crushing roller (208); the arc plate (302) is arranged below the cam (301); the slider (303) is fixedly connected to a side of the arc plate (302) close to the inner wall of the box body (1); and a sliding groove adapted to the slider (303) is provided on the inner wall of the box body (1).

4. A degradable TPU melt mixer according to claim 3, characterized in that: The connecting rod (304) is fixedly connected to the bottom of the arc plate (302), the moving frame (305) is fixedly connected to the bottom of the arc plate (302), the screen plate (306) is fixedly installed on the inner bottom surface of the moving frame (305), and the connecting block (307) is symmetrically fixedly connected to the left and right sides of the moving frame (305).

5. The degradable TPU melt mixer according to claim 3, characterized in that: The box body (1) is provided with a vertical groove adapted to the connecting block (307) inside, the vertical rod (308) is fixedly connected between the upper and lower surfaces of the vertical groove, the connecting block (307) is slidably connected to the outside of the vertical rod (308), and the spring (309) is fixedly connected between the connecting block (307) and the bottom surface of the vertical groove, and is sleeved on the outside of the vertical rod (308).

6. The degradable TPU melt mixer according to claim 1, characterized in that: The push plate mechanism (4) is composed of a third motor (401), a screw rod (402), a moving block (403), a limiting rod (404), a moving plate (405) and a telescopic feeding tube (407); the third motor (401) is fixedly connected to the inner right side of the moving frame (305); the screw rod (402) is connected to the output end of the third motor (401); and the limiting rod (404) is fixedly connected to the inner left side of the moving frame (305).

7. A degradable TPU melt mixer according to claim 6, characterized in that: There are two moving blocks (403), the right moving block (403) is threadedly connected to the outside of the screw rod (402), and the left moving block (403) is slidably connected to the outside of the limit rod (404), the moving plate (405) is fixedly connected between the two moving blocks (403), a circulation groove (406) is opened at the front end of the moving frame (305), and the telescopic feeding pipe (407) is fixedly installed above the circulation groove (406).

8. A degradable TPU melt mixer according to claim 7, characterized in that: Feeding pipes are fixedly connected to the upper and lower parts of the circulating fan (5), respectively, and the bottom end of the lower feeding pipe is connected to the top surface of the telescopic feeding pipe (407).

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