A granulating device for thermosetting plastic processing

Abstract

The present invention belongs to the technical field of plastic granule production equipment, and specifically relates to a granulation device for thermosetting plastic processing, which includes an equipment body, and the output end of the equipment body is sequentially equipped with an extrusion plate, a blanking shell, a support plate and a first drive motor from near to far, and the internal annular array of the extrusion plate has a plurality of extrusion holes, and the end of the extrusion plate away from the equipment body is provided with a cutting groove. The present invention drives the cutting knife to operate through a second drive motor. During the operation of the cutting knife, the first grinding element and the second grinding element grind the two ends of the cutting knife edge respectively, avoiding the phenomenon of single-sided grinding of the cutting edge. The grinding can be stopped by turning off the second drive motor, so that the device can control the grinding process and grinding time. At the same time, the waste generated by grinding can be collected through the air pump unit to avoid the waste falling into the plastic particles.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic particle production equipment, and in particular relates to a granulating device for processing thermosetting plastics. Background Art

[0002] With the rapid development of modern industry, especially the rapid growth of the plastics industry, thermosetting plastics are widely used in electronic packaging, composite materials, laminates, adhesives and various high-performance engineering applications due to their excellent physical and chemical properties, such as heat resistance, chemical corrosion resistance and good mechanical strength. Commonly used thermosetting plastic granulation methods mainly include crushing and extrusion. Among them, the extrusion method is to extrude the plastic into strips under a certain temperature and pressure through a granulation device, and then cool and cut to obtain plastic particles of the required shape and size.

[0003] Existing thermosetting plastic granulation devices usually include a feeding module, a plasticizing extrusion module, a cooling module, and a pelletizing module, etc. Among them, the pelletizing module is used to cut the solidified plastic into particles of a certain size. However, in actual production applications, the cutting edges of these tools will gradually wear and become blunt during long-term use. The blunting of the cutting edges will lead to a reduction in cutting force, resulting in a significant decrease in granulation efficiency, affecting the production capacity of the entire production line, and also causing problems such as irregular shapes of plastic particles and different particle sizes. For example, a plastic granulator with high stability disclosed by the authorization publication number CN217257526U increases the temperature in the discharge pipe through a heating module, prompting the first elastic element to undergo a phase change, and driving the grinding element and the cutting element to fit and move away through the cooperation of the first elastic element and the second elastic element of the memory metal material. The problem of the blunting of the cutting element is avoided by the grinding element intermittently grinding the cutting element. However, the following problems still exist during its application:

[0004] 1. The shape transformation of the first elastic element and the second elastic element is controlled by heat transfer in the discharge pipe. The shape transformation process of the two elastic elements and the grinding process of the cutting element cannot be controlled manually, and the grinding time and grinding effect cannot be guaranteed;

[0005] 2. During the grinding process of the cutting element, the grinding element can only make single-sided contact with the cutting edge of the cutting element, and the grinding effect of the cutting element cannot meet expectations;

[0006] 3. During the grinding process, the waste chips generated cannot be collected. The waste chips fall on the surface of the plastic particles, which will cause the quality of the particles to decline, and will also cause the quality of other products made of thermosetting plastic particles to decline.

[0007] Based on the above problems, this application document proposes a granulation device for thermosetting plastic processing to improve the above problems. Summary of the invention

[0008] The purpose of the present invention is to provide a granulation device for processing thermosetting plastics, in which a cutting knife is driven to operate by a second driving motor. During the operation of the cutting knife, both ends of the cutting knife edge are respectively ground by a first grinding element and a second grinding element, thereby avoiding the phenomenon of single-sided grinding of the cutting edge. The grinding can be stopped by turning off the second driving motor, so that the device can control the grinding process and grinding time. At the same time, the waste chips generated by grinding can be collected by an air pump unit to prevent the waste chips from falling into the plastic particles.

[0009] The technical solution adopted by the present invention is as follows:

[0010] A granulating device for processing thermosetting plastics, comprising an equipment body, wherein the output end of the equipment body is sequentially equipped with an extrusion plate, a blanking shell, a support plate and a first drive motor from near to far, wherein the inner annular array of the extrusion plate has a plurality of extrusion holes, and a cutting groove is provided at one end of the extrusion plate away from the equipment body, a first transmission shaft is fixed to the output end of the first drive motor, and the first transmission shaft and the support plate as well as the first transmission shaft and the blanking shell are all rotationally connected, a base is fixed to one end of the first transmission shaft away from the first drive motor, and a plurality of mounting surfaces are evenly provided at one end of the outer side of the base close to the extrusion plate, a cutting knife is provided on the mounting surface, the cross-sectional shape of the cutting knife is circular, a cutting edge is provided on the outer side of the cutting knife, and the cutting edge and the extrusion hole as well as the cutting edge and the cutting groove are mutually adapted, and further comprising:

[0011] A grinding part, the grinding part is assembled between the base and the cutting blade, the grinding part comprises a base, a first grinding element and a second grinding element, the base is assembled on the mounting surface, a grinding cavity is opened inside the base, the first grinding element and the second grinding element are respectively slidably connected to the two ends of the grinding cavity, and the first grinding element and the second grinding element are respectively matched with the two ends of the cutting edge;

[0012] A driving part, the driving part is assembled between the grinding part and the cutting blade;

[0013] Among them, the first driving motor can drive the cutting knife to rotate around the axis of the extrusion plate, the driving part can drive the cutting knife to rotate, and the axis of the extrusion plate and the axis of the cutting knife are perpendicular to each other. In the initial state, the first grinding element and the cutting edge as well as the second grinding element and the cutting edge are tightly fitted.

[0014] In a preferred embodiment, the first grinding element and the second grinding element are made of one of the following materials: diamond and ceramic.

[0015] In a preferred embodiment, the grinding part also includes two sliders and multiple elastic elements. The two sliders are slidably connected to the two ends of the grinding chamber, and the first grinding element and the second grinding element are respectively fixed to one end of the two sliders close to each other. The multiple elastic elements are evenly assembled between the sliders and the base. In the initial state, the multiple elastic elements are all in a compressed state.

[0016] In a preferred embodiment, the first grinding element and the second grinding element are each provided with a chip collection groove, the two sliders are each provided with a flow focusing groove, and the chip collection groove and the flow focusing groove correspond to each other one by one, the ends of the two sliders away from each other are threadedly connected with air path connectors, and the flow focusing grooves and the air path connectors are connected to each other, and air pipe avoidance holes are provided at both ends of the grinding chamber, and the air path connectors and the air pipe avoidance holes correspond to each other one by one.

[0017] In a preferred embodiment, in the initial state, the rebound force of the elastic element is recorded as F1, the mass of the first grinding element is recorded as M1, the mass of the second grinding element is recorded as M2, the mass of the slider is recorded as M3, and the mass of the air path connector is recorded as M4, F1>M1+M3+M4, F1>M2+M3+M4.

[0018] In a preferred embodiment, guide grooves are provided on both sides of the slider, guide bosses are provided on both sides of the grinding chamber, the guide grooves and guide bosses correspond one to one, and the slider and the base are slidably connected through the cooperation of the guide grooves and the guide bosses.

[0019] In a preferred embodiment, a driving cavity is opened inside the base, two shaft frames are arranged on the base, the driving part includes a bottom plate, a support rib, a transmission worm, a second driving motor, a driven worm wheel and a second transmission shaft, the bottom plate is fixed on the mounting surface, the support rib is fixed to one end of the bottom plate away from the base, the transmission worm is rotatably connected between the bottom plate and the support rib, and the lower end of the transmission worm extends into the driving cavity, the second driving motor is fixed inside the driving cavity, and the output end of the second driving motor is fixedly connected to the transmission worm, the driven worm wheel is rotatably connected between the two shaft frames through a ball bearing, the driven worm wheel is fixedly connected to the cutting knife, the second transmission shaft is fixed to one side of the outer side of the driven worm wheel, and the second transmission shaft and the transmission worm are meshingly connected.

[0020] In a preferred solution, an electrical integrated slip ring is fixed to the outer side of the first transmission shaft, and the gas circuit joint and the electrical integrated slip ring as well as the second drive motor and the electrical integrated slip ring are all connected to each other.

[0021] The technical effects achieved by the present invention are:

[0022] The present invention provides a first grinding element and a second grinding element at both ends of the cutting blade, respectively, and cooperates with an elastic element and a slider, so that the first grinding element and the second grinding element can always be closely fitted with the cutting blade. After the cutting blade rotates around its own axis, the first grinding element and the second grinding element grind both ends of the cutting blade respectively, thereby avoiding the phenomenon of single-sided grinding of the cutting blade, and improving the grinding effect and grinding efficiency.

[0023] The present invention drives the driven worm gear, the second transmission shaft and the cutting knife to operate through the second driving motor, grinds the cutting knife through the first grinding element and the second grinding element, and drives the cutting knife to operate through the second driving motor, so that the device can control the grinding process and grinding time, thereby improving the grinding effect. At the same time, during the grinding process of the cutting knife, the thermosetting plastic wire can still be cut without stopping the machine, thereby improving the production efficiency.

[0024] The present invention can drive the air flow near the first grinding element and the second grinding element by starting the air pump unit, thereby driving the waste chips generated in the grinding process to flow through the chip collecting groove, the flow collecting groove and the air path joint to the outside of the device in sequence, thereby preventing the waste chips generated in the grinding process from falling into the plastic particles and reducing the product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a partial structural enlarged diagram of the present invention;

[0027] Figure 3 It is a schematic structural diagram of an extruded plate of the present invention;

[0028] Figure 4 is a structural cross-sectional view of an extruded plate of the present invention;

[0029] Figure 5 It is a schematic diagram of the internal structure of the substrate of the present invention;

[0030] Figure 6 It is a structural schematic diagram of the grinding part of the present invention;

[0031] Figure 7 is a structural cross-sectional view of the grinding portion of the present invention;

[0032] Figure 8 It is a structural exploded diagram of the grinding part of the present invention;

[0033] Fig. 9 is a structural cross-sectional view of the second grinding element and the slider of the present invention;

[0034] Fig.10is a schematic structural diagram of a second grinding element of the present invention;

[0035] Fig.11 It is a structural schematic diagram of the driving part of the present invention;

[0036] Fig.12 It is a structural explosion diagram of the driving part of the present invention.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] 100, equipment body; 101, extrusion plate; 102, blanking shell; 103, support plate; 104, first drive motor; 105, extrusion hole; 106, cutting groove; 107, first transmission shaft; 108, base; 109, mounting surface; 110, cutting knife; 111, drive cavity; 112, electrical integrated slip ring;

[0039] 200, grinding department;

[0040] 201, base; 202, first grinding element; 203, second grinding element; 204, slider; 205, elastic element; 206, chip collecting groove; 207, flow collecting groove; 208, air path connector; 209, air pipe avoidance hole; 210, guide groove; 211, guide boss; 212, shaft frame;

[0041] 300, driving unit;

[0042] 301, bottom plate; 302, support rib; 303, transmission worm; 304, second drive motor; 305, driven worm gear; 306, second transmission shaft. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0044] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0045] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The phrase "in a preferred embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0046] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0047] Please see attached Figures 1 to 5 1 is a first embodiment of the present invention, which provides a granulating device for processing thermosetting plastics, including a device body 100, wherein the output end of the device body 100 is equipped with an extrusion plate 101, a blanking shell 102, a support plate 103 and a first drive motor 104 in sequence from near to far, the inner annular array of the extrusion plate 101 has a plurality of extrusion holes 105, and a cutting groove 106 is provided at one end of the extrusion plate 101 away from the device body 100, and a first transmission shaft 107 is fixed to the output end of the first drive motor 104, and the first transmission shaft 107 is fixed to the output end of the first drive motor 104. 7 and the support plate 103 as well as the first transmission shaft 107 and the blanking shell 102 are rotatably connected through a bearing assembly, a base 108 is fixed to one end of the first transmission shaft 107 away from the first drive motor 104, a plurality of mounting surfaces 109 are evenly provided on the outer side of the base 108 close to the extrusion plate 101, and a cutting knife 110 is mounted on the mounting surface 109, the cross-sectional shape of the cutting knife 110 is circular, a cutting edge is provided on the outer side of the cutting knife 110, and the cutting edge and the extrusion hole 105 as well as the cutting edge and the cutting groove 106 are mutually adapted, and further comprises:

[0048] The grinding part 200 is assembled between the base 108 and the cutting blade 110. The grinding part 200 includes a base 201, a first grinding element 202 and a second grinding element 203. The base 201 is assembled on the mounting surface 109. A grinding cavity is provided inside the base 201. The first grinding element 202 and the second grinding element 203 are respectively slidably connected to the two ends of the grinding cavity. The first grinding element 202 and the second grinding element 203 are respectively located at the two ends of the cutting edge, and the first grinding element 202 and the cutting edge, as well as the second grinding element 203 and the cutting edge, are mutually adapted.

[0049] A driving unit 300 , wherein the driving unit 300 is installed between the grinding unit 200 and the cutting blade 110 ;

[0050] Among them, the first driving motor 104 can drive the cutting knife 110 to rotate around the axis of the extrusion plate 101, the driving unit 300 can drive the cutting knife 110 to rotate around the axis of the cutting knife 110, and the axis of the extrusion plate 101 and the axis of the cutting knife 110 are perpendicular to each other. In the initial state, the first grinding element 202 and the cutting edge as well as the second grinding element 203 and the cutting edge are tightly fitted.

[0051] Here, the interior of the device body 100 is at least equipped with a feeding unit, a plasticizing extrusion unit, a cooling unit and a control unit. The feeding unit is used to input thermosetting plastic raw materials. The plasticizing extrusion unit can heat and melt the thermosetting plastic raw materials and extrude them through the extrusion plate 101 to form thermosetting plastic wires. The cooling unit can cool and shape the formed thermosetting plastic wires. The control unit can control the operation of the feeding unit, the plasticizing extrusion unit, the cooling unit and other electrical components.

[0052] In this embodiment, a thermosetting plastic raw material is fed into the device through a feeding unit, the thermosetting plastic raw material is heated and melted by a plasticizing extrusion unit and extruded through an extrusion hole 105 inside an extrusion plate 101 to form a thermosetting plastic wire, and the formed thermosetting plastic wire is cooled and shaped by a cooling unit, and the first drive motor 104 is started, and the first drive shaft 107 and the base 108 are fixedly connected by the first drive motor 104 and the first transmission shaft 107, and the first transmission shaft 107 and the base 108 are fixedly connected, so that the first drive motor 104 drives the first transmission shaft 107 and the base 108 to rotate, and the cutting knife 110 is driven to rotate around the axis of the extrusion plate 101 through the base 108, and the extruded thermosetting plastic wire is cut by the cutting knife 110 to form a plastic. Particles, after the cutting edge of the outer side of the cutting knife 110 becomes blunt, the driving unit 300 is started, and the cutting knife 110 is driven by the driving unit 300 to rotate around the axis of the cutting knife 110. Because in the initial state, the first grinding element 202 and the cutting edge as well as the second grinding element 203 and the cutting edge are tightly fitted and the first grinding element 202 and the second grinding element 203 are respectively located at the two ends of the cutting edge, the two ends of the cutting edge are respectively ground by the cooperation of the first grinding element 202 and the second grinding element 203, so as to avoid the phenomenon of single-sided grinding of the cutting edge and improve the grinding effect of the cutting edge of the cutting knife 110. At the same time, after turning off the driving unit 300, the grinding of the cutting edge can be stopped, so that the grinding process and grinding time can be controlled, making the device more convenient to use.

[0053] Specifically, a material collecting unit is used in conjunction with the device. The material collecting unit can collect and filter the cut thermosetting plastic particles. The material collecting unit is compatible with the blanking shell 102 .

[0054] Secondly, in a preferred embodiment, the material of the first grinding element 202 and the second grinding element 203 is one of the following materials: diamond, ceramic or other materials with a harderness higher than the cutting blade 110. In this embodiment, the material of the first grinding element 202 and the second grinding element 203 is preferably diamond.

[0055] It should be noted that, in the present embodiment, the cutting knife 110 for cutting thermosetting plastic wires is made of high-quality carbon steel, and the cutting edge is inlaid with tungsten-cobalt hard alloy, and the heat treatment hardness is HRC58-62.

[0056] In this embodiment, the hardness of diamond, ceramic or other high-hardness materials is higher than the hardness of the material of the cutting knife 110. Through the above-mentioned arrangement, the cutting knife 110 can be effectively ground so that the edge of the cutting knife 110 is sharp enough.

[0057] Secondly, please also refer to Figures 6 to 8 The grinding part 200 also includes two sliders 204 and a plurality of elastic elements 205. The two sliders 204 are slidably connected to the two ends of the grinding chamber, and the first grinding element 202 and the second grinding element 203 are respectively fixed to the ends of the two sliders 204 close to each other. The plurality of elastic elements 205 are evenly assembled between the sliders 204 and the base 201. In the initial state, the plurality of elastic elements 205 are all in a compressed state.

[0058] Specifically, the elastic element 205 can be any one of the following items: a spring, a polyurethane block or other elastic materials with compression characteristics. In the present embodiment, the elastic element 205 is preferably a polyurethane block.

[0059] In this embodiment, during the process of grinding the cutting edge of the cutting knife 110, the slider 204 is driven to move by the elastic element 205, and the slider 204 drives the first grinding element 202 and the second grinding element 203 to move towards each other, so that the first grinding element 202 and the second grinding element 203 can always keep in contact with the cutting edge of the cutting knife 110, thereby improving the grinding efficiency and grinding effect.

[0060] Next, please refer to Figures 8 to 10 As shown, the first grinding element 202 and the second grinding element 203 are each provided with a chip collecting groove 206, the two sliders 204 are each provided with a flow collecting groove 207, and the chip collecting groove 206 and the flow collecting groove 207 correspond one to one, the ends of the two sliders 204 that are away from each other are threadedly connected with an air path connector 208, and the flow collecting groove 207 and the air path connector 208 are interconnected, and air pipe avoidance holes 209 are provided at both ends of the grinding chamber, and the air path connector 208 and the air pipe avoidance holes 209 correspond one to one.

[0061] Please note that Figure 8 As shown, a plurality of grinding teeth are provided at one end of the first grinding element 202 and the second grinding element 203 which are close to each other, and the shape of the grinding teeth on the first grinding element 202 is adapted to the shape of the cutting edge at one end of the cutting knife 110, and the shape of the grinding teeth on the second grinding element 203 is adapted to the shape of the cutting edge at the other end of the cutting knife 110.

[0062] Here, an air pump unit is used in conjunction with the device, and the air pump unit and the air circuit connector 208 are connected via a pipeline.

[0063] In this embodiment, during the process of grinding the cutting edge of the cutting knife 110 by the first grinding element 202 and the second grinding element 203, since the material hardness of the first grinding element 202 and the second grinding element 203 are higher than the material hardness of the cutting knife 110, waste chips will be generated during the grinding process of the cutting edge of the cutting knife 110, and the air pump unit is started, and the air near the first grinding element 202 and the second grinding element 203 flows to the air pump unit through the chip collecting groove 206, the flow collecting groove 207 and the air path connector 208 in turn, and the waste chips are collected by the flowing airflow to prevent the waste chips from falling into the plastic particles, causing the quality of the plastic particles to decline, and causing the quality of other products made of thermosetting plastic particles to decline.

[0064] In a preferred embodiment, in the initial state, the rebound force of the elastic element 205 is recorded as F1, the mass of the first grinding element 202 is recorded as M1, the mass of the second grinding element 203 is recorded as M2, the mass of the slider 204 is recorded as M3, and the mass of the air path connector 208 is recorded as M4, F1>M1+M3+M4, F1>M2+M3+M4.

[0065] In this embodiment, through the above-mentioned setting, through the cooperation of multiple elastic elements 205, the first grinding element 202 and the second grinding element 203 and the two ends of the cutting knife 110 can be driven to always be in a fitting state, thereby ensuring the grinding effect, improving the grinding efficiency, and reducing the grinding time.

[0066] Please refer again Figure 8 Guide grooves 210 are provided on both sides of the slider 204, and guide bosses 211 are provided on both sides of the grinding chamber. The guide grooves 210 and the guide bosses 211 correspond one to one, and the slider 204 and the base 201 are slidably connected through the matching guide grooves 210 and the guide bosses 211.

[0067] In this embodiment, the above-mentioned arrangement can improve the stability of the slider 204 during movement, thereby ensuring that the first grinding element 202 and the second grinding element 203 can stably fit with the cutting knife 110, ensuring the grinding effect, improving the grinding efficiency, and reducing the grinding time.

[0068] Please refer again Figure 11 to Figure 12As shown, a driving cavity 111 is provided inside the base 108, two shaft frames 212 are provided on the base 201, and the driving part 300 includes a bottom plate 301, a support rib 302, a transmission worm 303, a second driving motor 304, a driven worm gear 305 and a second transmission shaft 306. The bottom plate 301 is fixed on the mounting surface 109, and the bottom plate 301 and the base 201 are fixedly connected. The support rib 302 is fixed to one end of the bottom plate 301 away from the base 108 by welding, and the transmission worm 303 is rotatably connected between the bottom plate 301 and the support rib 302 through a ball bearing. The lower end of the transmission worm 303 extends to the inside of the drive cavity 111, the second drive motor 304 is fixed to the inside of the drive cavity 111 through a flange plate, and the output end of the second drive motor 304 is fixedly connected to the transmission worm 303, the driven worm wheel 305 is rotatably connected between the two shaft frames 212 through a ball bearing, the driven worm wheel 305 and the cutting knife 110 are fixedly connected, and the cutting knife 110 is located between the two shaft frames 212, the second transmission shaft 306 is fixed to one side of the outer side of the driven worm wheel 305, and the second transmission shaft 306 and the transmission worm 303 are meshingly connected.

[0069] Here, the second drive motor 304 is preferably a servo motor, which has the advantages of high precision, high stability, and high response speed. The selection of the servo motor can more stably drive the cutting knife 110 to rotate. Specifically, the servo motor is an existing mature technology and will not be further elaborated here.

[0070] In this embodiment, when the cutting edge of the cutting knife 110 becomes blunt and needs to be ground, the second driving motor 304 is started, and the transmission worm 303 is driven to rotate by the output end of the second driving motor 304. Since the transmission worm 303 and the second transmission shaft 306 are meshed and connected, the second transmission shaft 306 is driven to rotate by the transmission worm 303, and the second transmission shaft 306 is fixedly connected with the driven worm gear 305, so that the second transmission shaft 306 drives the driven worm gear 305 to rotate, and the driven worm gear 305 is fixedly connected with the cutting knife 110, so that the driven worm gear 305 drives the cutting knife 110 to rotate, and the cutting edge of the cutting knife 110 is ground by the first grinding element 202 and the second grinding element 203, and the second grinding element 203 is closed. After driving the motor 304, the grinding can be stopped, so that the grinding process of the cutting knife 110 by the first grinding element 202 and the second grinding element 203 can be controlled, thereby improving the grinding effect. At the same time, since the transmission worm 303 and the second transmission shaft 306 have a self-locking feature when used in conjunction with each other, the cutting knife 110 can be limited by the cooperation of the transmission worm 303 and the second transmission shaft 306 to avoid shaking of the cutting knife 110 during the cutting and granulation process, thereby providing stability during the operation of the device. At the same time, while the cutting knife 110 rotates around its own axis, it can also rotate around the axis of the extrusion plate 101, thereby allowing the cutting knife 110 to still cut the thermosetting plastic wire during the grinding process without stopping the machine, thereby improving production efficiency.

[0071] It should be noted that when the second drive motor 304 drives the cutting knife 110 to operate, it can be any one of the following forms: 360-degree circular motion, arc-shaped reciprocating motion, wherein the arc-shaped reciprocating motion only grinds a certain section of the cutting edge, and the angle of the reciprocating motion can be precisely controlled by the second drive motor 304 (servo motor).

[0072] Please refer again Figure 5 As shown, an electrical integrated slip ring 112 is fixed to the outer side of the first transmission shaft 107 , and the gas circuit connector 208 and the electrical integrated slip ring 112 as well as the second drive motor 304 and the electrical integrated slip ring 112 are all connected to each other.

[0073] It should be noted that the electrical integrated slip ring 112 at least includes a stator and a rotor, the stator is fixed to the outer side of the first transmission shaft 107, the rotor is rotatably connected to the outer side of the stator, the stator is provided with a first circuit end and a first gas path end, the rotor is provided with a second circuit segment and a second gas path end, and the first circuit end and the second circuit end are electrically connected, the first gas path end and the second gas path end are interconnected, the gas path connector 208 and the first gas path end, as well as the second gas path end and the input end of the air pump unit are connected through pipelines, and the second drive motor 304 The first circuit end and the second circuit end and the control unit are electrically connected through wires. The electrical integrated slip ring 112 is an existing mature technology. It integrates the functions of conductive slip rings to transmit electricity, data, signals, Ethernet, and USB, and integrates the advantages of pneumatic slip rings to transmit gas, oil, and liquid. The one-piece design structure effectively integrates the circuit and the gas circuit into one, which reduces the space required for equipment. The pneumatic-electric slip ring realizes the 360-degree infinite rotation and transmission of power medium, fluid medium, and gas medium at the same time. No further elaboration is made here.

[0074] In this embodiment, the above-mentioned arrangement enables the device to effectively solve the problem of wire winding during the cutting and granulation process, so that the device can operate stably.

[0075] The working principle of the present invention is:

[0076] A thermosetting plastic raw material is fed into the device through a feeding unit, the thermosetting plastic raw material is heated and melted through a plasticizing extrusion unit and extruded through an extrusion hole 105 inside the extrusion plate 101 to form a thermosetting plastic wire, and the formed thermosetting plastic wire is cooled and shaped through a cooling unit, the first driving motor 104 is started, and the first driving motor 104 and the first transmission shaft 107 are fixedly connected, and the first transmission shaft 107 and the base 108 are fixedly connected, so that the first driving motor 104 drives the first transmission shaft 107 and the base 108 to rotate, and the cutting knife 110 is driven to rotate around the axis of the extrusion plate 101 through the base 108, and the extruded thermosetting plastic wire is cut by the cutting knife 110 to form plastic particles, and after the outer edge of the cutting knife 110 becomes blunt, the cutting knife 110 is started. The second drive motor 304 is driven to drive the driven worm gear 305, the second transmission shaft 306 and the cutting knife 110 to rotate around the axis of the cutting knife 110 through the second drive motor 304, and the two ends of the cutting edge are ground respectively through the cooperation of the first grinding element 202 and the second grinding element 203, so as to avoid the phenomenon of single-sided grinding of the cutting edge, thereby improving the grinding effect of the cutting edge of the cutting knife 110. At the same time, after turning off the second drive motor 304, the grinding of the cutting edge can be stopped, so that the grinding process and the grinding time can be controlled, making the device more convenient to use. During the grinding process, the air pump unit is started, so that the waste chips generated during the grinding process flow to the outside of the device through the chip collecting groove 206, the flow collecting groove 207 and the air path joint 208 in turn for collection, so as to avoid the waste chips from being scattered in the thermosetting plastic particles.

[0077] The above are only preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the art unless otherwise specified and limited.

Claims

1. A granulating device for thermosetting plastic processing, characterized in that: The device comprises a device body (100), wherein the output end of the device body (100) is equipped with an extrusion plate (101), a blanking shell (102), a support plate (103) and a first drive motor (104) in sequence from near to far, the inner annular array of the extrusion plate (101) has a plurality of extrusion holes (105), and a cutting groove (106) is provided at one end of the extrusion plate (101) away from the device body (100), and a first transmission shaft (107) is fixed to the output end of the first drive motor (104), and the first transmission shaft (107) and the support plate (103) and the first transmission shaft The first drive shaft (107) and the blanking shell (102) are both rotatably connected, a base (108) is fixed to one end of the first transmission shaft (107) away from the first drive motor (104), a plurality of mounting surfaces (109) are evenly provided on the outer side of the base (108) near the extrusion plate (101), a cutting knife (110) is mounted on the mounting surface (109), the cross-sectional shape of the cutting knife (110) is circular, a cutting edge is provided on the outer side of the cutting knife (110), and the cutting edge and the extrusion hole (105) and the cutting edge and the cutting groove (106) are mutually adapted, and further comprising: A grinding part (200), the grinding part (200) being mounted between the base (108) and the cutting blade (110), the grinding part (200) comprising a base (201), a first grinding element (202) and a second grinding element (203), the base (201) being mounted on the mounting surface (109), a grinding cavity being provided inside the base (201), the first grinding element (202) and the second grinding element (203) being slidably connected to two ends of the grinding cavity, and the first grinding element (202) and the second grinding element (203) being respectively matched with two ends of the cutting edge; The grinding part (200) further comprises two sliders (204) and a plurality of elastic elements (205); the two sliders (204) are respectively slidably connected to two ends of the grinding chamber, and the first grinding element (202) and the second grinding element (203) are respectively fixed to ends of the two sliders (204) close to each other; the plurality of elastic elements (205) are evenly assembled between the sliders (204) and the base (201); in an initial state, the plurality of elastic elements (205) are all in a compressed state; A driving part (300), wherein the driving part (300) is assembled between the grinding part (200) and the cutting blade (110); The first drive motor (104) is capable of driving the cutting knife (110) to rotate around the axis of the extrusion plate (101), the drive unit (300) is capable of driving the cutting knife (110) to rotate, and the axis of the extrusion plate (101) and the axis of the cutting knife (110) are perpendicular to each other. In an initial state, the first grinding element (202) and the cutting edge, as well as the second grinding element (203) and the cutting edge, are tightly fitted.

2. A granulating device for thermosetting plastic processing according to claim 1, characterized in that: The material of the first grinding element (202) and the second grinding element (203) is one of the following materials: diamond and ceramic.

3. A granulating device for thermosetting plastic processing according to claim 1, characterized in that: The first grinding element (202) and the second grinding element (203) are each provided with a chip collecting groove (206), the two sliders (204) are each provided with a flow collecting groove (207), and the chip collecting groove (206) and the flow collecting groove (207) correspond one to one, the ends of the two sliders (204) that are away from each other are both threadedly connected with an air path connector (208), and the flow collecting groove (207) and the air path connector (208) are interconnected, and air pipe avoidance holes (209) are each provided at both ends of the grinding chamber, and the air path connector (208) and the air pipe avoidance holes (209) correspond one to one.

4. A granulating device for thermosetting plastic processing according to claim 3, characterized in that: In the initial state, the rebound force of the elastic element (205) is recorded as F1, the mass of the first grinding element (202) is recorded as M1, the mass of the second grinding element (203) is recorded as M2, the mass of the slider (204) is recorded as M3, and the mass of the gas path connector (208) is recorded as M4, F1>M1+M3+M4, F1>M2+M3+M4.

5. A granulating device for thermosetting plastic processing according to claim 1, characterized in that: Guide grooves (210) are provided on both sides of the slider (204), and guide bosses (211) are provided on both sides of the grinding chamber. The guide grooves (210) and the guide bosses (211) correspond one to one, and the slider (204) and the base (201) are slidably connected through the matching of the guide grooves (210) and the guide bosses (211).

6. A granulating device for thermosetting plastic processing according to claim 3, characterized in that: A driving cavity (111) is provided inside the base (108); two shaft frames (212) are provided on the base (201); the driving unit (300) comprises a bottom plate (301), support ribs (302), a transmission worm (303), a second drive motor (304), a driven worm gear (305) and a second transmission shaft (306); the bottom plate (301) is fixed on the mounting surface (109); the support ribs (302) are fixed to an end of the bottom plate (301) away from the base (108); and the transmission worm (303) is rotatably connected between the bottom plate (301) and the support ribs (302). , and the lower end of the transmission worm (303) extends into the interior of the drive cavity (111), the second drive motor (304) is fixed inside the drive cavity (111), and the output end of the second drive motor (304) is fixedly connected to the transmission worm (303), the driven worm wheel (305) is rotatably connected between the two shaft frames (212) via a ball bearing, the driven worm wheel (305) and the cutting knife (110) are fixedly connected, the second transmission shaft (306) is fixed to one side of the outer side of the driven worm wheel (305), and the second transmission shaft (306) and the transmission worm (303) are meshingly connected.

7. A granulating device for thermosetting plastic processing according to claim 6, characterized in that: An electrical integrated slip ring (112) is fixed to the outer side of the first transmission shaft (107), and the gas circuit connector (208) and the electrical integrated slip ring (112) as well as the second drive motor (304) and the electrical integrated slip ring (112) are all connected to each other.

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