Thermoplastic elastomer plastic granulator

Abstract

The invention belongs to the technical field of granulator, and particularly relates to a thermoplastic elastomer plastic granulator which comprises a box body, a control platform is arranged on the box body, a feeding port is formed in the upper portion of the box body, a discharging port is formed in the lower portion of the box body, an electric control unit is fixed in the box body and electrically connected with the control platform, and the thermoplastic elastomer plastic granulator is further provided with a cutting unit, a conveying unit and a screening unit. When the cutter tube is replaced, the cutter tube can be replaced without interrupting production by rotating the cutter replacing disc, so that the influence on the production speed is greatly reduced, and the production efficiency is effectively improved; in addition, an air control blade telescopic structure is arranged in the cutter tube, an air duct, a sliding way, a reset spring, a sliding block, a fixing base, an inflation head and a telescopic blade cooperatively operate, an air pump is controlled by a controller to inflate or stop inflating, the telescopic blade stretches out and draws back according to needs, and the cutting particle size can be flexibly adjusted without detaching the cutter tube.

Description

Technical Field

[0001] The present invention relates to the technical field of pelletizers, and specifically to a thermoplastic elastomer plastic pelletizer. Background Art

[0002] Thermoplastic elastomers TPE / TPR, also known as artificial rubber or synthetic rubber. Its products have both the excellent properties of traditional cross-linked vulcanized rubber such as high elasticity, aging resistance, and oil resistance, and at the same time have the characteristics of convenient processing and a wide range of processing methods of ordinary plastics. Pelletizing is an important link in the rubber production process. The hardness of thermoplastic elastomers is between 60-90A, belonging to soft rubber, so the cutting blades need to be replaced frequently to keep the cutting knives sharp. When replacing the cutting knives of the existing thermoplastic elastomer plastic pelletizers, the machine needs to be stopped and the cutting knives need to be removed for replacement, which is a relatively cumbersome and time-consuming process and affects the production progress during mass production. Therefore, a pelletizer that can replace the blades with less impact on the production speed is needed.

[0003] The standard diameter of rubber particles is below 5mm. The existing pelletizers do not automatically screen and divert the cut particles after pelletizing, but rely on later manual screening, which will waste too much human resources in the screening quality, and there will be many unqualified products flowing into the market along with the qualified products in small factories with loose quality inspection.

[0004] In addition, the existing pelletizers also have limitations in adjusting the cutting particle size. Different production requirements often require rubber particles of different particle sizes, but if the existing pelletizers want to change the cutting particle size, they usually need to replace the entire cutter tube or use equipment of different specifications, which is complex in operation and high in cost, and cannot flexibly and efficiently meet the diverse production requirements. Summary of the Invention

[0005] The purpose of the present invention is to provide a thermoplastic elastomer plastic pelletizer, which can replace the blades with less impact on the production speed by setting a tool change disc, and can also automatically screen and divert the cut particles by setting a screening unit, so as to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solutions:

[0007] A thermoplastic elastomer plastic pelletizer, comprising a box body,

[0008] A control platform is provided on the box body, a feed inlet is opened above the box body, and a discharge outlet is opened below the feed inlet; an electric control unit is fixedly connected inside the box body, and the electric control unit is electrically connected to the control platform; a cutting unit is arranged inside the box body;

[0009] A transmission unit, which is arranged inside the box body and aligned with the feeding port. The other end of the transmission unit is aligned with the cutting unit. The transmission unit is used to transmit the strip-shaped thermoplastic elastomer entering from the feeding port to the cutting unit for cutting;

[0010] A screening unit, which is arranged below the cutting unit and used to sort particles of different sizes;

[0011] An air-controlled blade telescopic structure is arranged inside the cutter tube of the cutting unit. The air-controlled blade telescopic structure includes air channels evenly distributed radially in the cutter tube. One end of each air channel is connected to an air pump through an air valve, and the other end leads to a fixed slot; each air channel corresponds to a slideway arranged along the axial direction of the cutter tube; the bottom of the telescopic blade is connected to a return spring through a slider, and the slider is slidably and sealingly connected to both sides of the slideway; the other end of the return spring is fixed on a fixed seat, and an inflation head is fixedly inserted in the middle of the fixed seat. One end of the inflation head is tightly connected to the air channel, and the other end passes through the fixed seat and extends to blow air at the slider; the fixed seat is installed in the fixed slot, and the fixed slot is designed in a conical shape, with the top opening communicating with the air channel and the bottom end communicating with the slideway; an installation slot is provided on the inner wall of the cutter tube to fix and install the air valve, air pump and controller. The air valve is connected to the air pump and the air channel through a pipeline, responsible for delivering gas into the air channel to provide power for the extension of the telescopic blade. The controller is electrically connected to the air valve and the air pump. The operator can send instructions to the controller through the control platform. After receiving the instructions, the controller precisely controls the inflation and stop actions of the air pump. The present invention also contains a necessary battery to supply power to the air pump, air valve, controller, etc.

[0012] Preferably, the cutting unit includes two cutter tubes. The two cutter tubes are fixedly connected with a tool changing disc for replacing the cutter tubes. One end of the tool changing disc is connected to a motor one for driving the tool changing disc to rotate. The motor one is fixedly connected inside the box body. There is a button one for controlling the rotation of the motor one in the electronic control unit. A tool changing port is provided on the box body at the position where the cutter tube exits.

[0013] Preferably, a clamping groove one is provided beside the motor one. The clamping groove one is opened on the box body. A clamping block is slidably connected inside the clamping groove one. One end of the clamping block is connected to the inside of the clamping groove one by a spring. An electromagnet one is installed inside the clamping groove one. The clamping block is made of iron. A clamping groove two is provided at the relative position of the tool changing disc and the clamping groove one. The electromagnet one is electrically connected to the button one.

[0014] Preferably, a motor two for driving the cutter tube to rotate is provided on one side of the clamping groove one. The motor two is connected to the cutter tube, and a coupling is provided at the connection part. An anvil shaft is provided beside the motor two. The anvil shaft is fixedly connected inside the box body.

[0015] Preferably, the coupling mainly consists of a first coupling disc and a second coupling disc. A connecting pipe is sleeved outside the first coupling disc. The connecting pipe is slidably connected to the first coupling disc. Splines that cooperate with each other are provided on the first coupling disc and the connecting pipe. The outer ring of the connecting pipe and the spline ring can rotate independently. The second coupling disc is provided with the same splines as the first coupling disc. The connecting pipe is magnetized and has magnetism. An electromagnet two for adsorbing the connecting pipe is provided at one end of the first coupling disc away from the second coupling disc. A button two for converting the magnetic pole of the electromagnet two is provided in the electronic control unit.

[0016] Preferably, tapered surfaces are provided at both ends of each spline to facilitate meshing when the connecting pipe moves.

[0017] Preferably, the transmission unit includes a plurality of transmission rollers. The plurality of transmission rollers are rotatably connected to the box body. A sponge ring for absorbing moisture is sleeved on each transmission roller. Uniformly distributed grooves are provided on each sponge ring.

[0018] Preferably, a lead screw for enabling the anvil shaft to move along the inner wall is provided at the connection between the anvil shaft and the box body. The lead screw is used to adjust the gap between the anvil shaft and the cutter tube.

[0019] Preferably, the screening unit includes a filter plate provided below the cutting unit. The filter plate is inclined. Filter holes are provided on the filter plate. An inclined surface is provided below the filter plate. The inclined surface is parallel to the filter plate. The low end of the inclined surface is aligned with the discharge port at the junction with the box body. A waste port is provided at the junction of the low end of the filter plate and the box body. An elastic protective strip is fixedly connected above the waste port. The elastic protective strip is made of a rubber material with high elasticity and wear resistance and has good flexibility and buffering performance.

[0020] Preferably, the inner wall of the box body is made of carbon steel.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] 1. For a thermoplastic elastomer plastic granulator according to the present invention, compared with the traditional technical solution, by providing a tool change disc, when a cutter tube needs to be changed, the tool change disc is rotated, and another cutter tube is changed for production. When changing the cutter tube, production can be continued without interruption, achieving the effect of changing the blade with less impact on the production speed and improving the production efficiency.

[0023] 2. For a thermoplastic elastomer plastic granulator according to the present invention, by providing a coupling, the coupling is used to interrupt the connection between the second motor and the cutter tube, thereby ensuring the smooth tool change of the tool change disc and being able to connect with the replaced cutter tube after the tool change is completed, so as to drive the rotation of the cutter tube. The operator can change the cutter tube at the tool change port without separating the cutter tube from the second motor.

[0024] 3. The thermoplastic elastomer plastic granulator of the present invention is provided with a filter plate to screen the particles after cutting, select the qualified products and discharge them from the discharge port, and discharge the remaining unqualified products from the waste port, thus saving personnel quality inspection, reducing labor costs and improving production efficiency.

[0025] 4. When it is necessary to change the cutting particle size, the air pump inflates the air passage, and the gas pushes the slider to drive the telescopic blade to extend out of the cutter tube. By adjusting the inflation conditions of different air passages, the number of extended blades can be accurately controlled, so as to flexibly adjust the cutting particle size, enabling the granulator to meet the production requirements of products with different particle sizes without replacing the cutter tube, greatly improving the versatility and adaptability of the equipment, reducing the time cost and economic cost brought by replacing the cutter tube, and further enhancing the production efficiency and the economic benefits of the enterprise. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic structural diagram of the present invention;

[0027] Figure 2 is a front cross-sectional view of the present invention;

[0028] Figure 3 is a top cross-sectional view of the present invention;

[0029] Figure 4 is Figure 3 an enlarged view at A;

[0030] Figure 5 is a schematic structural diagram of the coupling;

[0031] Figure 6 is a three-dimensional structure diagram of the coupling;

[0032] Figure 7 is a schematic structural diagram of the rotating roller;

[0033] Figure 8 is a schematic structural diagram of the filter plate;

[0034] Figure 9 is a schematic structural diagram of the cutter tube;

[0035] Figure 10 is a cross-sectional view of the cutter tube;

[0036] Figure 11 is a schematic structural diagram of the pneumatically controlled telescopic blade in the cutter tube.

[0037] In the figure: 1, box body; 2, feed inlet; 3, discharge outlet; 4, control platform; 5, electric control unit

[0038] 6. Cutting unit, 601. Knife tube, 6011. Ventilation channel, 6012. Slideway, 6013. Return spring, 6014. Slide block, 6015. Fixed seat, 6016. Inflatable head, 6017. Conical fixing groove, 6018. Telescopic blade, 602. Tool changing disc, 603. Motor 1, 604. Button 1, 605. Tool changing port

[0039] 7. Transmission unit, 701. Transmission roller, 702. Sponge ring, 703. Groove

[0040] 8. Screening unit, 801. Filter plate, 802. Filter holes, 803. Waste outlet

[0041] 9. Clamping groove 1, 10. Clamping block, 11. Spring, 12. Electromagnet 1, 13. Clamping groove 2, 14. Motor 2

[0042] 15. Coupling, 1501. Coupling disc 1, 1502. Coupling disc 2, 1503. Connecting pipe, 1504. Electromagnet 2, 1505. Button 2

[0043] 16. Anvil shaft, 17. Lead screw Detailed implementation manners

[0044] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners:

[0045] A thermoplastic elastomer plastic pelletizer, including a box body 1:

[0046] A control platform 4 is provided on the box body 1, a feed inlet 2 is opened above the box body 1, and a discharge outlet 3 is opened below the feed inlet 2; an electric control unit 5 is fixedly connected inside the box body 1, and the electric control unit 5 is electrically connected to the control platform 4; a cutting unit 6 is arranged inside the box body 1.

[0047] A transmission unit 7, the transmission unit 7 is arranged inside the box body 1 and is aligned with the feed inlet 2, and the other end of the transmission unit 7 is aligned with the cutting unit 6. The transmission unit 7 is used to transmit the strip-shaped thermoplastic elastomer entering from the feed inlet 2 to the cutting unit 6 for cutting;

[0048] A screening unit 8, a screening unit 8 for sorting particles of different sizes is arranged below the cutting unit 6.

[0049] The cutting unit 6 includes two cutter tubes 601. The two cutter tubes 601 are fixedly connected with a tool changing disk 602 for replacing the cutter tubes 601. One end of the tool changing disk 602 is connected to a first motor 603 for driving the rotation of the tool changing disk 602. The first motor 603 is fixedly connected inside the box body 1. In the electronic control unit 5, there is a first button 604 for controlling the rotation of the first motor 603. On one side of the first motor 603, there is a first slot 9. A block 10 is slidably connected inside the first slot 9. One end of the block 10 is connected to the inside of the first slot 9 by a spring 11. An electromagnet 12 is installed inside the first slot 9. The block 10 is made of iron. A second slot 13 is provided at the relative position of the tool changing disk 602 with respect to the first slot 9. The electromagnet 12 is electrically connected to the first button 604. On one side of the first slot 9, there is a second motor 14 for driving the rotation of the cutter tube 601. The second motor 14 is connected to the cutter tube 601, and a coupling 15 is provided at the connection part. Beside the second motor 14, there is an anvil shaft 16, and the anvil shaft 16 is fixedly connected inside the box body 1.

[0050] The coupling 15 is mainly composed of a first coupling disk 1501 and a second coupling disk 1502. A connecting pipe 1503 is sleeved outside the first coupling disk 1501. The connecting pipe 1503 is slidably connected to the first coupling disk 1501. Splines are provided on the first coupling disk 1501 and the connecting pipe 1503 and are matched with each other. The outer ring of the connecting pipe 1503 and the spline ring can rotate independently. The same splines as those on the first coupling disk 1501 are provided on the second coupling disk 1502. The connecting pipe 1503 is magnetized and has magnetism. At the end of the first coupling disk 1501 away from the second coupling disk 1502, there is an electromagnet 1504 for adsorbing the connecting pipe 1503. In the electronic control unit 5, there is a second button 1505 for converting the magnetic pole of the electromagnet 1504. Conical surfaces are provided at both ends of each spline to facilitate meshing when the connecting pipe 1503 moves.

[0051] The thermoplastic elastomer extruded by the extruder enters from the feed port 2 after being cooled by the cooling system, and is driven to the cutter tube 601 by the driving roller 701 in the transmission unit 7. The rotation of the driving roller 701 in the transmission unit 7 drives the movement of the strip-shaped thermoplastic elastomer plastic. The rotation speed of the rotating roller is controlled by the electronic control unit 5. The sponge ring 702 on the rotating roller can absorb part of the moisture on the thermoplastic elastomer plastic to prevent the adhesion of two pieces of thermoplastic elastomer plastic. Grooves 703 are provided on the sponge ring 702 to increase the friction between the thermoplastic elastomer plastic and the driving roller 701, thereby improving the transmission efficiency.

[0052] In this embodiment, the splines in the connecting pipe 1503 of the coupling are simultaneously in spline fit with the first coupling disk 1501 and the second coupling disk 1502, so that the second motor 14 drives the cutter tube 601 to rotate. The strip-shaped thermoplastic elastomer raw material enters through the gap between the cutter tube 601 and the anvil shaft 16. The cutter tube 601 cuts the strip-shaped thermoplastic elastomer raw material into particles. The cutter tube 601 will wear, resulting in a gradual increase in the distance between the cutter tube 601 and the anvil shaft 16. The lead screw 17 is used to adjust the distance between the anvil shaft 16 and the cutter tube 601. The lead screw 17 is controlled by the electronic control unit 5 to ensure that the distance between the anvil shaft 16 and the cutter tube 601 is controlled within the range of 0.03 - 0.1 mm.

[0053] When the operator finds that the defective products such as incomplete granulation and uneven cutting edges reach 4% - 7% of the total output, it means that the cutter tube 601 needs to be replaced. When replacing the cutter tube 601, first stop the operation of the machine, and then press the second button 1505. The second electromagnet 1504 is activated and magnetically adsorbs the connecting pipe 1503 to move in the direction of the second electromagnet 1504. At this time, the splines of the connecting pipe 1503 are separated from the second coupling disk 1502, so that the coupling 15 is disconnected. Then press the first button 604 to energize the first electromagnet 12, retract the clamping block 10 into the first clamping groove 9. At the same time, the first motor 603 is energized to rotate the tool changing disk 602 by half a turn. Then the first electromagnet 12 is de-energized, and the cutter tube 601 to be replaced is rotated to the tool changing opening 605. The cutter tube 601 at the tool changing opening 605 is rotated to the coupling 15. After pressing the second button 1505, the second electromagnet 1054 changes its magnetic pole, and the connecting pipe 1503 returns under the action of the repulsive force of the magnet, so that the splines in the connecting pipe 1503 are reconnected to the second coupling disk 1502, so that the second motor 14 can drive the cutter tube 601 to rotate. At the same time, the first electromagnet 12 is de-energized, and the clamping block 10 is pushed into the second clamping groove 13 under the action of the spring 11. Then start the machine and continue the production work. After the cutter tube 601 rotates to the tool changing opening 605, the operator can replace the cutter tube 601 at the tool changing opening 605 without affecting the production.

[0054] As an embodiment of the present invention, an air-controlled blade telescopic structure is provided inside the cutter tube 601. The air channels 6011 are evenly distributed radially inside the cutter tube 601. One end of each air channel 6011 is connected to an air pump through an air valve, and the other end leads to the fixing groove 6017. Each air channel 6011 corresponds to a slideway 6012. The slideway 6012 is arranged axially inside the cutter tube 601. The bottom of the telescopic blade 6018 is connected to a return spring 6013 through a slider 6014. The slider 6014 fits tightly inside the slideway 6012 and forms a sliding seal connection with both sides of the slideway 6012. This connection method can not only ensure the smooth sliding of the slider 6014 inside the slideway 6012 but also prevent gas leakage. One end of the return spring 6013 is fixed on the slider 6014, and the other end is fixed on the fixing seat 6015. The fixing seat 6015 is in the shape of a circular plate, and an inflation head 6016 is fixedly inserted in the middle. One end of the inflation head 6016 is tightly connected to the air channel 6011, and the other end extends through the fixing seat 6015 and blows directly at the slider 6014. The fixing seat 6015 is installed in the fixing groove 6017. The contact parts of the fixing seat 6015 with the fixing groove 6017 and the inflation head 6016 are rubber-sealed connections. The fixing groove 6017 is designed in a conical shape. Its top opening is connected to the air channel 6011, and its bottom end is connected to the slideway 6012. Installation grooves are designed on the inner wall of the cutter tube 601 to fix and install the air valve, air pump, and controller. The air valve is connected to the air pump and the air channel 6011 through pipes and is responsible for delivering gas into the air channel 6011 to provide power for the extension of the telescopic blade 6018. The controller is electrically connected to the air valve and the air pump. The operator can send instructions to the controller through the control platform 4. After receiving the instructions, the controller precisely controls the inflation and stop actions of the air pump. The present invention also includes a necessary battery to supply power to the air pump, air valve, controller, etc.

[0055] When it is necessary to change the cutting particle size of the granulator, the operator inputs the corresponding instructions on the control platform 4 according to the actual production requirements. After the instructions are transmitted to the controller, the controller controls the corresponding air vent valve to act. The air vent valve conducts the air pump and the air vent passage 6011, enabling the air pump to inflate the air vent passage 6011. The gas enters the fixed groove 6017 along the air vent passage 6011, and then enters the inflating head 6016 through the opening at the top of the fixed groove 6017. The inflating head 6016 blows out the gas, and the blown gas directly acts on the slider 6014, pushing the slider 6014 to slide outward along the slideway 6012. Since the slider 6014 is connected to the telescopic blade 6018, the sliding of the slider 6014 drives the telescopic blade 6018 to extend out of the cutter tube 601. Then the air vent valve closes the conduction between the air pump and the air vent passage 6011, isolating the air vent passage 6011 from the outside and keeping the air vent passage 6011 in a closed state to maintain the extended state of the telescopic blade 6018. By controlling the inflation of different air vent passages 6011 by the controller through the air vent valve, the number of telescopic blades 6018 extending out of the cutter tube 601 can be accurately controlled. When the cutting operation is stopped or the cutting particle size needs to be adjusted to retract some of the telescopic blades 6018, the operator sends a stop inflation instruction on the control platform 4. After the controller receives the instruction, it controls the corresponding air vent valve to conduct the air vent passage 6011 to the outside, discharging the air inside the air vent passage 6011. At this time, the slider 6014 without gas thrust slides inward along the slideway 6012 under the elastic force of the return spring 6013, and the sliding of the slider 6014 drives the telescopic blade 6018 to retract into the cutter tube 601.

[0056] In order to facilitate the replacement of the filter plate 801 to adapt to the screening requirements of different particle sizes when changing the cutting particle size, a fixing frame is fixed on the machine body. The filter plate 801 and the fixing frame are in a placement and cooperation relationship to ensure that the filter plate 801 is stable and easy to be taken out from the waste outlet 803 for replacement.

[0057] As an implementation manner of the present invention, a lead screw 17 enabling the anvil shaft 16 to move along the inner wall is provided at the connection between the anvil shaft 16 and the box body 1. The lead screw 17 is used to adjust the gap between the anvil shaft 16 and the cutter tube 601 to improve the granulation effect. The lead screw 17 is detected and controlled by the electronic control unit 5. The distance between the anvil shaft 16 and the cutter tube 601 can be detected by a detection device (such as infrared detection), and the gap between the anvil shaft 16 and the cutter tube 601 is adjusted to be controlled within 0.03 - 0.1 mm.

[0058] The cutter tube 601 or the anvil shaft 16 will be worn due to long-term work, resulting in an increase in the gap between the anvil shaft 16 and the cutter tube 601. Therefore, a lead screw 17 for adjusting the distance between the anvil shaft 16 and the cutter tube 601 is provided to improve the service life of the equipment and further improve the cutting accuracy.

[0059] As an implementation manner of the present invention, a filter plate 801 is provided below the cutting unit 6. The filter plate 801 is installed obliquely. Filter holes 802 are formed in the filter plate 801. A slope is provided below the filter plate 801. The slope is parallel to the filter plate 801. A discharge port 3 is provided at the junction of the lower end of the slope and the box body 1. The junction of the lower end of the filter plate 801 and the box body 1 is a waste material port 803. Particles that cannot pass through the filter holes 802 are discharged from the waste material port 803. An elastic protection strip is fixedly connected to the upper side of the waste material port 803. The elastic protection strip is made of a rubber material with high elasticity and wear resistance, and has good flexibility and buffering performance. Its function is to prevent the just-cut particles from accidentally rushing out of the waste material port 803 due to the impact force generated during cutting and the inertia of the particles themselves.

[0060] The particles cut by the cutter tube 601 fall onto the filter plate 801. The filter plate 801 retains the particles larger than the aperture of the filter holes 802 above. The finished products are filtered to the lower slope. The finished products flow out from the discharge port 3 along the slope. The particles larger than the aperture of the filter holes 802 flow out from the waste material port 803 along the filter plate 801, completing the separation of the finished products and the waste products.

[0061] Working principle: When the thermoplastic elastomer plastic granulator works, the extruder extrudes the cooled thermoplastic elastomer into the feed port 2. The driving roller 701 of the transmission unit 7 rotates. Relying on the sponge ring 702 to absorb water and the groove 703 to increase friction, it drives the strip-shaped raw material to the cutting unit 6. The spline of the connecting pipe 1503 of the coupling 15 cooperates with the first coupling disk 1501 and the second coupling disk 1502. The second motor 14 drives the cutter tube 601 to rotate. The raw material enters through the gap between the cutter tube 601 and the anvil shaft 16 and is cut into particles. The lead screw 17 is controlled by the electronic control unit 5 to adjust the gap between the anvil shaft 16 and the cutter tube 601 to be maintained at 0.03 - 0.1 mm to ensure the cutting accuracy. During the cutting process, if the cutter tube 601 needs to be replaced, first stop the machine, press the second button 1505, the electromagnet 2 1504 acts to move the connecting pipe 1503, and the coupling 15 is disconnected; then press the first button 604, the electromagnet 1 12 is energized, the clamping block 10 retracts, and the first motor 603 drives the tool changing disk 602 to rotate half a turn, turning the cutter tube 601 to be replaced to the tool changing port 605, and the new cutter tube 601 is turned to the position of the coupling 15; press the second button 1505 again, the pole of the electromagnet 2 1504 is converted, the connecting pipe 1503 returns to its original position, reconnects to the second coupling disk 1502, the second motor 14 drives the new cutter tube 601 to rotate, the electromagnet 1 12 is powered off, and the clamping block 10 is snapped into the second card slot 13 under the action of the spring 11, and the machine restarts to continue production.

[0062] If it is necessary to change the cutting particle size, input an instruction on the control platform 4. The controller controls the air pump and the air vent valve to inflate the air passage 6011 in the cutter tube 601. The gas enters the inflatable head 6016 through the fixed groove 6017, pushing the slider 6014 to slide along the slideway 6012, driving the telescopic blade 6018 to extend. By controlling the inflation conditions of different air passages 6011, the number of extended blades can be adjusted. When the air vent valve conducts the air passage 6011 to the outside, the return spring 6013 retracts the slider 6014 and the telescopic blade 6018. The cut particles fall onto the filter plate 801 of the screening unit 8. The filter plate 801 is inclined. Its filter holes 802 screen the qualified particles to the lower inclined plane, and the particles flow out from the discharge port 3 along the inclined plane. The unqualified particles larger than the aperture of the filter holes 802 are discharged from the waste port 803 along the filter plate 801, completing the particle screening and diversion.

[0063] When changing the cutting particle size, correspondingly, the aperture of the filter plate also needs to be changed to adapt to the screening requirements of different particle sizes. The operator can directly take out the filter plate 801 from the waste port 803. This equipment is equipped with filter plates 801 of various aperture specifications. The operator should select a suitable filter plate 801 for replacement according to the particle size requirements of actual production. During the replacement process of the filter plate 801, since the filter plate 801 is removed, some particles will directly flow out from the discharge port 3. To ensure product quality and avoid mixing of particles of different sizes, the operator needs to collect the particles flowing out from the discharge port 3 in a timely manner and make marks. After the filter plate 801 is replaced and the equipment runs normally for a period of time, the collected particles are sorted subsequently and classified according to the particle size, so as to effectively ensure the consistency and quality stability of the product.

[0064] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand 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.

Claims

1. A thermoplastic elastomer granulator, comprising a box body (1), characterized in that: A control platform (4) is provided on the box body (1), a feed inlet (2) is opened above the box body (1), and a discharge outlet (3) is opened below the feed inlet (2); an electric control unit (5) is fixedly connected inside the box body (1), and the electric control unit (5) is electrically connected to the control platform (4); a cutting unit (6) is arranged inside the box body (1); A transmission unit (7), the transmission unit (7) is arranged inside the box body (1) and is aligned with the feed inlet (2), and the other end of the transmission unit (7) is aligned with the cutting unit (6). The transmission unit (7) is used to transmit the strip-shaped thermoplastic elastomer entering from the feed inlet (2) to the cutting unit (6) for cutting; A screening unit (8), a screening unit (8) for sorting particles of different sizes is arranged below the cutting unit (6); An air-controlled blade telescopic structure is arranged inside the cutter tube (601) of the cutting unit (6). The air-controlled blade telescopic structure includes air channels (6011) evenly distributed radially in the cutter tube (601). One end of the air channel (6011) is connected to an air pump through an air valve, and the other end leads to a fixed groove (6017); each air channel (6011) corresponds to a slideway (6012) arranged along the axial direction of the cutter tube (601); the bottom of the telescopic blade (6018) is connected to a return spring (6013) through a slider (6014). The slider (6014) is slidably and hermetically connected to both sides of the slideway (6012); the other end of the return spring (6013) is fixed on a fixed seat (6015). An inflation head (6016) is fixedly inserted in the middle of the fixed seat (6015). One end of the inflation head (6016) is tightly connected to the air channel (6011), and the other end passes through the fixed seat (6015) and extends to blow air at the slider (6014); the fixed seat (6015) is installed in the fixed groove (6017). The fixed groove (6017) is designed in a conical shape, with the top opening communicating with the air channel (6011) and the bottom communicating with the slideway (6012); an installation groove is provided on the inner wall of the cutter tube (601) for fixing and installing the air valve, air pump and controller. The air valve is connected to the air pump and the air channel (6011) through a pipeline and is responsible for delivering gas into the air channel (6011) to provide power for the extension of the telescopic blade (6018). The controller is electrically connected to the air valve and the air pump. The operator can send instructions to the controller through the control platform (4). After receiving the instructions, the controller precisely controls the inflation and stop actions of the air pump. The present invention also includes a necessary battery to supply power to the air pump, air valve, controller, etc.

2. The thermoplastic elastomer plastic granulator according to claim 1, wherein: The cutting unit (6) includes two cutter tubes (601). The two cutter tubes (601) are fixedly connected with a tool changing disk (602) for replacing the cutter tubes (601). One end of the tool changing disk (602) is connected to a first motor (603) for driving the rotation of the tool changing disk (602). The first motor (603) is fixedly connected inside the box body (1). Inside the electronic control unit (5), there is a first button (604) for controlling the rotation of the first motor (603). A tool changing opening (605) is provided on the box body (1) at the position where the cutter tube (601) exits.

3. A thermoplastic elastomer plastic granulator according to claim 2, characterized in that: A first clamping groove (9) is provided beside the first motor (603). The first clamping groove (9) is opened on the box body (1). A clamping block (10) is slidably connected inside the first clamping groove (9). One end of the clamping block (10) is connected to the inside of the first clamping groove (9) by a spring (11). An electromagnet (12) is installed inside the first clamping groove (9). The clamping block (10) is made of iron. A second clamping groove (13) is provided at the relative position of the tool changing disk (602) and the first clamping groove (9). The electromagnet (12) is electrically connected to the first button (604).

4. A thermoplastic elastomer plastic granulator according to claim 3, characterized in that: A second motor (14) for driving the rotation of the cutter tube (601) is provided on one side of the first clamping groove (9). The second motor (14) is connected to the cutter tube (601), and a coupling (15) is provided at the connection part. An anvil shaft (16) is provided beside the second motor (14). The anvil shaft (16) is fixedly connected inside the box body (1).

5. A thermoplastic elastomer plastic granulator according to claim 4, characterized in that: The coupling (15) is mainly composed of a first coupling disk (1501) and a second coupling disk (1502). A connecting pipe (1503) is sleeved outside the first coupling disk (1501). The connecting pipe (1503) is slidably connected to the first coupling disk (1501). Splines are provided on the first coupling disk (1501) and the connecting pipe (1503) for mutual cooperation. The outer ring of the connecting pipe (1503) and the spline ring can rotate independently. The second coupling disk (1502) is provided with the same splines as the first coupling disk (1501). The connecting pipe (1503) is magnetized and has magnetism. An electromagnet (1504) for adsorbing the connecting pipe (1503) is provided at one end of the first coupling disk (1501) away from the second coupling disk (1502). A second button (1505) for converting the magnetic pole of the electromagnet (1504) is provided inside the electronic control unit (5).

6. The thermoplastic elastomer plastic granulator according to claim 5, wherein: Conical surfaces are provided at both ends of each spline to facilitate meshing when the connecting pipe (1503) moves.

7. A thermoplastic elastomer plastic granulator according to claim 6, characterized in that: The transmission unit (7) includes a plurality of transmission rollers (701). The plurality of transmission rollers (701) are rotatably connected to the box body (1). A sponge ring (702) for absorbing moisture is sleeved on each transmission roller (701). Uniformly distributed grooves (703) are provided on each sponge ring (702).

8. A thermoplastic elastomer plastic granulator according to claim 4, characterized in that: A lead screw (17) enabling the anvil shaft (16) to move along the inner wall is provided at the connection part of the anvil shaft (16) and the box body (1). The lead screw (17) is used to adjust the gap between the anvil shaft (16) and the cutter tube (601).

9. The thermoplastic elastomer plastic granulator according to claim 8, wherein: The screening unit (8) includes a filter plate (801) disposed below the cutting unit (6). The filter plate (801) is inclinedly installed, and filter holes (802) are formed in the filter plate (801). A slope is provided below the filter plate (801), and the slope is parallel to the filter plate (801). The intersection of the lower end of the slope and the box body (1) is aligned with the discharge port (3). A waste port (803) is provided at the intersection of the lower end of the filter plate (801) and the box body (1). An elastic protective strip is fixedly connected to the upper side of the waste port (803). The elastic protective strip is made of a rubber material with high elasticity and wear resistance, and has good flexibility and buffering performance.

10. A thermoplastic elastomer plastic granulator according to claim 1, characterized in that: The inner wall of the box body (1) is made of carbon steel material.

Images