Granulator for engineering plastic production

Abstract

The application relates to the granulation technology field of plastic production, and discloses a granulator for engineering plastic production, which comprises a granulator body, a clamping and removing unit arranged on the granulator body, a clamping component and a removing component arranged on the granulator body, a clamping assembly arranged on the clamping component, and a scattering assembly and a pushing assembly arranged on the clamping assembly; the clamping component is used for clamping the end of the soft pull strip. The granulator for engineering plastic production realizes synchronous opening and closing of all clamping claws through the sliding cooperation of multiple sets of clamping plates and through grooves and the cooperation of the inclined groove type scattering structure, and ensures that the stress of each soft pull strip is uniform; the clamping surface is additionally provided with a soft rubber pad, the friction force is increased, the clamping force is buffered at the same time, the high-temperature soft material head can be firmly clamped and cannot slip off, the pull strip cannot be clamped and broken due to rigidity, manual pulling operation is replaced, and the risk of high-temperature scalding is avoided.

Description

Technical Field

[0001] This invention relates to the field of plastic production granulation technology, and in particular to a granulator for engineering plastic production. Background Technology

[0002] Plastic pelletizing is a core process in the plastics processing industry chain, bridging upstream and downstream processes. It mainly involves extruding, cooling, and pelletizing molten virgin resin, recycled plastics, or modified blends into uniformly sized pellets, which serve as the basic raw material for downstream molding processes such as injection molding, extrusion, and blow molding. However, existing pelletizing machines still have the following drawbacks in use: In actual production operation, existing water-cooled plastic strip granulation equipment generally relies on manual operation during the start-up and material feeding stage, which is a common technical shortcoming in the industry. After the extruder is started, molten resin is extruded through the die to form a continuous high-temperature soft strip. At this time, the traction system has not yet established a stable conveying rhythm, requiring operators to bend over and manually pull the material head to guide the strip through the guide groove of the cooling water tank and the clamping gap of the traction rollers, and finally feed it into the feed inlet of the pelletizer, completing the material feeding and threading of the entire production line. The temperature of the molten strip can typically reach 150-250℃. When operators work at close range, their exposed skin is easily burned by the high-temperature strip. At the same time, the high-temperature radiation from the extruder die and the hot and humid steam emitted from the cooling water tank make the operating environment harsh, and prolonged operation can easily cause stuffiness and discomfort for the operators. In addition, there are exposed gaps in the surrounding rotating rollers, which also carries the risk of mechanical pinching injuries. Furthermore, the accuracy and stability of manual pulling are difficult to guarantee. Uneven tension control can easily cause soft material strips to stretch and thin locally, or even break, requiring machine shutdown and refeeding, significantly extending the start-up and debugging time. Deviation in the thread path can cause multiple strips to clump together, become misaligned, or detach from the guide groove, directly leading to quality defects in subsequent pelletizing processes such as uneven particle length, pellet clumping, and broken pieces, increasing the product defect rate. Frequent strip breakage resets and deviation adjustments also reduce production continuity and increase manual monitoring costs, becoming a key bottleneck restricting the automation upgrade of production lines. Summary of the Invention

[0003] Given that the existing technology generally relies on manual operation for the start-up and feeding process, which not only easily leads to safety hazards, but also makes it difficult to guarantee the accuracy and stability of manual pulling, a pelletizing machine for engineering plastics production is proposed.

[0004] This application provides a pelletizing machine for engineering plastics production, the purpose of which is to solve the problem of relying on manual operation in the start-up and feeding process, improve the safety of equipment use, and ensure the accuracy and stability of the pull bar when it is pulled.

[0005] The technical solution of the present invention is: a granulator for engineering plastic production, comprising a granulator body and a clamping and dismantling unit disposed on the granulator body; The clamping and dismantling unit includes a clamping component and a dismantling component disposed on the granulator body. The clamping component includes a clamping assembly disposed on the granulator body, and the clamping assembly is provided with a gathering and dispersing assembly and a pushing assembly. The clamping component is used to clamp the end of the soft pull strip, and the abutting component is used to abut the clamped soft pull strip so that it can easily fall off; The clamping assembly includes a lifting plate mounted on the granulator body. The lifting plate has several through slots at equal intervals. Two clamping plates are symmetrically distributed inside the through slots, and soft rubber pads are provided on opposite sides of the two clamping plates.

[0006] Furthermore, the aggregation and dispersion assembly includes several symmetrically distributed inclined grooves disposed inside the through groove, and a movable block is disposed inside the inclined groove, the movable block being fixedly connected to the corresponding clamping plate.

[0007] Furthermore, the pushing assembly includes a pushing plate disposed on the top of the lifting plate, a plurality of sliding grooves are symmetrically distributed on the pushing plate, a slider is disposed inside the sliding groove, the slider is fixedly connected to the corresponding clamping plate, and two first electric push rods are symmetrically distributed on the lifting plate, the output end of the first electric push rods being fixedly connected to the pushing plate.

[0008] Furthermore, the resisting component includes a resisting component and a triggering component disposed on the clamping component, and a moving component is also disposed on the granulator body; The disengaging component includes a cavity disposed on the clamping plate, a disengaging plate disposed inside the cavity, a plurality of disengaging blocks disposed symmetrically on the disengaging plate, the disengaging blocks penetrating the clamping plate and the soft rubber pad, a reciprocating screw disposed inside the cavity, the disengaging plate being threadedly connected to the reciprocating screw, one of the disengaging blocks being provided with a movable groove, and the reciprocating screw extending into the movable groove.

[0009] Furthermore, the triggering assembly includes a trigger rod disposed on the clamping plate, a first bevel gear disposed at the bottom of the trigger rod, a second bevel gear disposed on the reciprocating screw, the first bevel gear and the second bevel gear meshing and connected, a first gear disposed at the top of the trigger rod, a toothed plate disposed on the clamping plate, the toothed plate meshing and connected with the first gear, and the end of the toothed plate away from the first gear being fixedly connected to the corresponding clamping plate.

[0010] Furthermore, the moving component includes a moving frame mounted on the granulator body, a lifting plate slidably connected to the moving frame, and two second electric push rods symmetrically distributed on the top of the moving frame, with the output ends of the second electric push rods fixedly connected to the lifting plate.

[0011] Furthermore, it also includes a cold water tank installed on the granulator body, with a guide groove provided on the inner side of the cold water tank.

[0012] Furthermore, it also includes several traction rollers symmetrically distributed on the granulator body, with the outer diameter of the upper end of the traction rollers being smaller than the outer diameter of the lower end.

[0013] The beneficial effects of this invention are: Through the sliding cooperation of multiple sets of clamping plates and through slots, combined with the inclined slot-type convergence and divergence structure, all clamps open and close synchronously, ensuring that each soft pull bar is subjected to uniform force. Soft rubber pads are added to the clamping surface to increase friction and buffer the clamping force. This not only firmly clamps the high-temperature soft material head to prevent slippage, but also prevents the material bar from being pinched or broken due to rigid clamping. It replaces manual pulling operations, avoids the risk of high-temperature burns, and ensures that the diameter of the pull bar is uniform during the material feeding process, reducing the rework caused by uneven pulling and effectively shortening the start-up and debugging time.

[0014] Through the linkage triggering structure between the toothed plate and the first gear, and with the precise control of the action sequence by the one-way bearing, the reciprocating screw is driven to extend synchronously with the abutment block only when the clamping plate is fully open and the material strip is released. This gently pushes the material strip away from the soft rubber pad surface, effectively solving the problem of high-temperature soft strips easily sticking to the clamping surface and being lifted up by the clamping jaws. After the abutment action is completed, the abutment block automatically retracts and resets, preventing the abutment block from being exposed and sticking to the material strip. No manual assistance is required to move the material throughout the process, ensuring that the material strip falls accurately to the target station and improving the reliability and continuity of the material feeding operation.

[0015] By using a movable frame to drive the clamping mechanism to move horizontally and adjust its height, the material head can be precisely clamped and passed sequentially through the guide groove and the gap between the traction rollers in the cold water tank, and finally sent into the pelletizing station. The entire process does not require operators to approach the high-temperature die head and the hot water tank, eliminating safety hazards such as burns and mechanical pinching. With the guide groove limiting each piece, the strips are accurately inserted into the groove without deviation or sticking together. The traction rollers can stably support the strips and establish continuous conveying, which greatly improves the automation level of the production line, reduces the cost of manual operation, and ensures continuous production and stable pelletizing quality. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the internal structure of the granulator body of the present invention; Figure 3 This is a schematic diagram of the clamping and disarming unit structure of the present invention; Figure 4 This is a partial structural diagram of the clamping and disarming unit of the present invention; Figure 5 This is a cross-sectional view of the clamping component of the present invention; Figure 6This is a schematic diagram of the structure of the elimination component of the present invention; Figure 7 This is a cross-sectional view of the elimination component of the present invention; Figure 8 This is a schematic diagram of the trigger component structure of the present invention; Figure 9 This is a schematic diagram of the cold water tank structure of the present invention; Figure 10 This is a schematic diagram of the traction roller structure of the present invention.

[0017] In the picture: 1. Granulator body; 2. Clamping assembly; 21. Lifting plate; 22. Through groove; 23. Clamping plate; 24. Soft rubber pad; 3. Gathering and dispersing assembly; 31. Inclined groove; 32. Moving block; 4. Pushing assembly; 41. Pushing plate; 42. Slide groove; 43. Sliding block; 44. First electric push rod; 5. Removing assembly; 51. Removing plate; 52. Removing block; 53. Reciprocating screw; 6. Triggering assembly; 61. Trigger rod; 62. First bevel gear; 63. Second bevel gear; 64. First gear; 65. Gear plate; 7. Moving assembly; 71. Moving frame; 72. Second electric push rod; 8. Cold water tank; 81. Guide groove; 9. Traction roller. Detailed Implementation

[0018] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0019] Example 1, referring to Figures 1-5 According to the first embodiment of the present invention, a pelletizing machine for engineering plastics production is provided, including a pelletizing machine body 1 and a clamping and dismantling unit installed on the pelletizing machine body 1. The clamping and dismantling unit includes a clamping component and a dismantling component installed on the pelletizing machine body 1. The clamping component includes a clamping assembly 2 installed on the pelletizing machine body 1. A gathering and dispersing assembly 3 and a pushing assembly 4 are installed on the clamping assembly 2. The clamping component is used to clamp the end of the soft strip, and the dismantling component is used to dismantle the clamped soft strip so that it can fall off easily. The clamping assembly 2 includes a lifting plate 21 slidably connected to the pelletizing machine body 1. A plurality of through slots 22 are equally spaced on the lifting plate 21. Two clamping plates 23 are slidably connected to the inner side of the through slots 22 in a symmetrical manner. Soft rubber pads 24 are fixedly connected to the opposite sides of the two clamping plates 23.

[0020] Specifically, the granulator body 1 heats and melts the plastic raw material, pressurizes and conveys it, and extrudes it through the die head into continuous soft strips, which are then cooled and granulated. After the soft strips are extruded from the die head of the granulator body 1, the lifting plate 21 is raised and lowered, causing the clamping plate 23 to move near the soft strips. The clamping plate 23 moves inside the through groove 22, and under the action of the two clamping plates 23, the end of the soft strips is clamped. With the action of the soft rubber pad 24, the strips are prevented from being broken. Then, according to the extrusion speed of the soft strips, the lifting plate 21 is controlled to move laterally, driving the soft strips to move to the feed port of the cutting mechanism. The clamping plate 23 is then controlled to release the soft strips, completing the start-up and feeding of the strips. This replaces manual strip feeding, eliminating the risk of burns and mechanical injuries to operators from close contact with the high-temperature strips, avoiding the harsh working environment caused by high-temperature radiation and humid steam, and significantly improving production safety. At the same time, it can achieve precise and controllable feeding path, solve the problems of broken strips and strip deviation caused by uneven manual pulling force, significantly shorten the start-up and debugging time, ensure uniform and stable pellet size, reduce defect rate and manual operation cost, and effectively improve the automation level of production line and the continuity of production operation.

[0021] Reference Figure 5 The aggregation and dispersion assembly 3 includes several symmetrically distributed inclined grooves 31 opened inside the through groove 22. A movable block 32 is slidably connected inside the inclined groove 31, and the movable block 32 is fixedly connected to the corresponding clamping plate 23.

[0022] Specifically, when the two opposing clamping plates 23 slide downward inside the through groove 22, the moving block 32 slides downward inside the inclined groove 31. Under the action of the inclined groove 31, the two opposing clamping plates 23 move closer to each other, thereby clamping the end of the pull bar. When the two opposing clamping plates 23 slide upward inside the through groove 22, under the action of the inclined groove 31, the two clamping plates 23 move away from each other, thereby releasing the clamped pull bar and causing it to fall.

[0023] Reference Figure 4 and Figure 5 The pushing component 4 includes a pushing plate 41 slidably connected to the top of the lifting plate 21. Several sliding grooves 42 are symmetrically distributed on the pushing plate 41. A slider 43 is slidably connected to the inner side of the sliding groove 42. The slider 43 is fixedly connected to the corresponding clamping plate 23. Two first electric push rods 44 are symmetrically distributed and fixedly connected on the lifting plate 21. The output end of the first electric push rod 44 is fixedly connected to the pushing plate 41.

[0024] Specifically, the first electric actuator 44 is activated, which drives the push plate 41 to move and press the clamping plate 23. When the clamping plate 23 moves, the slider 43 slides inside the slide groove 42. The first electric actuator 44 drives the push plate 41 to move upward. Under the action of the slider 43 and the slide groove 42, the clamping plate 23 is pulled upward, causing the clamping plate 23 to move in the opposite direction inside the through groove 22.

[0025] Example 2, refer to Figures 6-8 This is the second embodiment of the present invention, which differs from the first embodiment in that: the resisting component includes a resisting component 5 and a triggering component 6 installed on the clamping component 2, and a moving component 7 is also installed on the granulator body 1; the resisting component 5 includes a cavity opened on the clamping plate 23, a resisting plate 51 is slidably connected to the inside of the cavity, a plurality of resisting blocks 52 are symmetrically distributed and fixedly connected on the resisting plate 51, the resisting blocks 52 penetrate the clamping plate 23 and the soft rubber pad 24, a reciprocating screw 53 is rotatably connected to the inside of the cavity, the resisting plate 51 is threadedly connected to the reciprocating screw 53, and one of the resisting blocks 52 has a movable groove, and the reciprocating screw 53 extends to the inside of the movable groove.

[0026] Specifically, initially, the end of the abutment block 52 is flush with the side of the soft rubber pad 24 to ensure stable clamping of the end of the soft pull strip. When the two opposing clamping plates 23 move away from each other and the soft pull strip is lowered, the reciprocating screw 53 rotates, causing the abutment plate 51 to slide inside the cavity, which drives the abutment block 52 to move. This causes the abutment block 52 to extend out of the soft rubber pad 24 and abut against the soft pull strip, preventing the soft pull strip from sticking to the soft rubber pad 24 and making it difficult for it to fall. As the two clamping plates 23 continue to move away, the reciprocating screw 53 continues to rotate, causing the resisting plate 51 to move in the opposite direction and reset inside the cavity. This causes the resisting block 52 to retract into the soft rubber pad 24, and the end of the resisting block 52 also enters the soft rubber pad 24. Under the blocking effect of the soft rubber pad 24, the soft pull strip is prevented from sticking to the resisting block 52. Under the action of the movable groove, when the resisting plate 51 retracts inside the cavity, the reciprocating screw 53 can enter the movable groove, preventing the reciprocating screw 53 from hitting the resisting block 52 and causing motion interference.

[0027] Reference Figure 7 and Figure 8 The trigger assembly 6 includes a trigger rod 61 rotatably connected to the clamping plate 23. A first bevel gear 62 is fixedly connected to the bottom of the trigger rod 61. A second bevel gear 63 is fixedly connected to the reciprocating screw 53. The first bevel gear 62 and the second bevel gear 63 are meshed together. A first gear 64 is fixedly connected to the top of the trigger rod 61. A toothed plate 65 is slidably connected to the clamping plate 23. The toothed plate 65 is meshed with the first gear 64. The end of the toothed plate 65 away from the first gear 64 is fixedly connected to the corresponding clamping plate 23.

[0028] Specifically, the first gear 64 and the trigger rod 61 are connected by a one-way bearing. When the two clamping plates 23 move closer to each other, they drive the toothed plate 65 to move, causing the first gear 64 to rotate. Under the action of the one-way bearing, the trigger rod 61 does not rotate, and the two clamping plates 23 move relative to each other, causing the toothless end of the toothed plate 65 to move to the vicinity of the first gear 64. When the two clamping plates 23 move away from each other and the soft pull bar begins to be lowered, the toothless end of the toothed plate 65 slides on the first gear 64. The first gear 64 does not rotate, and the abutment block 52 does not extend. This prevents the distance between the clamping plates 23 from being too small and also clamps the soft pull bar. When the abutment block 52 extends, it abuts the soft pull bar to prevent it from being damaged and to ensure that the abutment block 52 sticks to the soft pull bar. When the two clamping plates 23 continue to move away from each other and the soft pull bar is released, the toothed plate 65 begins to act on the first gear 64. Under the action of the one-way bearing, the first gear 64 rotates, driving the trigger rod 61 and the first bevel gear 62 to rotate. Through the second bevel gear 63, the reciprocating screw 53 rotates, causing the abutment block 52 to extend out of the soft rubber pad 24, abut against the soft pull bar, and then retract into the soft rubber pad 24.

[0029] Reference Figure 2 and Figure 3 The moving component 7 includes a moving frame 71 that is slidably connected to the granulator body 1. The lifting plate 21 is slidably connected to the moving frame 71. Two second electric push rods 72 are symmetrically distributed and fixedly connected to the top of the moving frame 71. The output end of the second electric push rods 72 is fixedly connected to the lifting plate 21.

[0030] Specifically, the second electric actuator 72 is activated, causing the lifting plate 21 to slide up and down inside the moving frame 71, thus moving the clamping plate 23 to the vicinity of the end of the soft strip. The moving frame 71 slides on the granulator body 1 via an electric slide rail, driving the clamped soft strip to move to the feed inlet of the cutting mechanism. The remaining structure is the same as in Embodiment 1.

[0031] Example 3, referring to Figure 9 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that it also includes a cold water tank 8 fixedly connected to the granulator body 1, and a guide groove 81 is fixedly connected to the inner side of the cold water tank 8.

[0032] Specifically, when the soft strip is clamped and pulled, it passes through the cold water tank 8 and slides inside the guide groove 81, separating and limiting the strips in the cold water tank 8 one by one, preventing the strips from deviating, gathering and sticking together, ensuring the strips are conveyed smoothly and orderly, and stabilizing the size and quality of subsequent pelleting.

[0033] Reference Figure 10It also includes several traction rollers 9 that are symmetrically distributed and rotatably connected to the granulator body 1, with the outer diameter of the upper end of the traction rollers 9 being smaller than the outer diameter of the lower end.

[0034] Specifically, the granulator body 1 is also equipped with an external motor and gear set. When the external motor is started, it drives the traction roller 9 to rotate. When the soft strip passes through the cold water tank 8, it is placed between two opposing traction rollers 9. When the traction roller 9 rotates, the soft strip is conveyed. The rest of the structure is the same as that of Embodiment 2.

[0035] Based on embodiments 1-3, the working principle of the present invention is as follows: When the machine is started, the granulator body 1 extrudes the molten plastic raw material into continuous soft strips through the die head. The second electric push rod 72 is activated, which drives the lifting plate 21 to descend, so that the clamping plate 23 moves to the vicinity of the end of the soft strip. The second electric push rod 72 is turned off, and the first electric push rod 44 is activated, which drives the push plate 41 to descend. Under the action of the slider 43 and the slide groove 42, the clamping plate 23 descends inside the through groove 22, so that the moving block 32 slides inside the inclined groove 31. Under the action of the inclined groove 31, the two opposing clamping plates 23 move closer to each other, driving the toothed plate 65 to move. Under the action of the one-way bearing, the first gear 64 does not rotate until the toothless end of the toothed plate 65 moves to the vicinity of the first gear 64. Under the action of the soft rubber pad 24, the end of the soft strip is clamped. The first electric push rod 44 is turned off. The movable frame 71 moves the lifting plate 21 laterally, causing the clamped pull bar to move, pass through the cold water tank 8, and slide inside the guide groove 81, placing the soft pull bar between the two opposing traction rollers 9. The first electric actuator 44 is activated again, causing the push plate 41 to rise. Under the action of the slider 43 and the slide groove 42, the clamping plate 23 rises inside the through groove 22, and the two opposing clamping plates 23 move away from each other. When the distance between the clamping plates 23 is large enough, the soft pull bar is released. At this time, the toothed plate 65 acts on the first gear 64 with its toothed end. Under the action of the one-way bearing, the first gear 64 rotates, causing the trigger rod 61 and the first bevel gear 62 to rotate. Under the action of the second bevel gear 63, the reciprocating screw 53 rotates, causing the resisting plate 51 to slide inside the cavity, driving... The moving block 52 abuts against the soft pull strip on the soft rubber pad 24, preventing the soft pull strip from sticking to the soft rubber pad 24 and becoming difficult to fall off. The reciprocating screw 53 continues to rotate, causing the abutting plate 51 to retract inside the cavity, which in turn causes the abutting block 52 to retract and enter the inside of the soft rubber pad 24. Under the action of the soft rubber pad 24, the abutting block 52 and the soft rubber pad 24 are relatively displaced, which pushes the soft pull strip stuck to the abutting block 52 off, preventing the soft pull strip from sticking to the abutting block 52. After the soft pull strip falls off, the first electric push rod 44 can be turned off, allowing the moving frame 71 to reset, waiting for the next time it is turned on, so that the pull strip can be pulled again.

[0036] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A pelletizer for engineering plastics production, comprising a pelletizer body (1), characterized in that: It also includes a clamping and dismantling unit installed on the granulator body (1); The clamping and dismantling unit includes a clamping component and a dismantling component disposed on the granulator body (1). The clamping component includes a clamping assembly (2) disposed on the granulator body (1). The clamping assembly (2) is provided with a gathering and dispersing assembly (3) and a pushing assembly (4). The clamping component is used to clamp the end of the soft pull strip, and the abutting component is used to abut the clamped soft pull strip so that it can easily fall off; The clamping assembly (2) includes a lifting plate (21) set on the granulator body (1). Several through slots (22) are set at equal intervals on the lifting plate (21). Two clamping plates (23) are symmetrically distributed inside the through slots (22). Soft rubber pads (24) are set on opposite sides of the two clamping plates (23).

2. The pelletizing machine for engineering plastics production according to claim 1, characterized in that: The gathering and dispersing assembly (3) includes several symmetrically distributed inclined grooves (31) arranged inside the through groove (22). A moving block (32) is arranged inside the inclined groove (31), and the moving block (32) is fixedly connected to the corresponding clamping plate (23).

3. The pelletizing machine for engineering plastics production according to claim 1, characterized in that: The pushing assembly (4) includes a pushing plate (41) set on the top of the lifting plate (21). Several sliding grooves (42) are symmetrically distributed on the pushing plate (41). A slider (43) is set inside the sliding groove (42). The slider (43) is fixedly connected to the corresponding clamping plate (23). Two first electric push rods (44) are symmetrically distributed on the lifting plate (21). The output end of the first electric push rod (44) is fixedly connected to the pushing plate (41).

4. The pelletizing machine for engineering plastics production according to claim 1, characterized in that: The resisting component includes a resisting component (5) and a triggering component (6) disposed on the clamping component (2), and a moving component (7) is also disposed on the granulator body (1). The disengaging component (5) includes a cavity provided on the clamping plate (23), a disengaging plate (51) provided inside the cavity, a plurality of disengaging blocks (52) symmetrically distributed on the disengaging plate (51), the disengaging blocks (52) penetrating the clamping plate (23) and the soft rubber pad (24), a reciprocating screw (53) provided inside the cavity, the disengaging plate (51) and the reciprocating screw (53) being threadedly connected, one of the disengaging blocks (52) being provided with a movable groove, and the reciprocating screw (53) extending to the inside of the movable groove.

5. The pelletizing machine for engineering plastics production according to claim 4, characterized in that: The triggering assembly (6) includes a trigger rod (61) disposed on a clamping plate (23), a first bevel gear (62) disposed at the bottom of the trigger rod (61), a second bevel gear (63) disposed on a reciprocating screw (53), the first bevel gear (62) and the second bevel gear (63) meshing and connected, a first gear (64) disposed at the top of the trigger rod (61), a toothed plate (65) disposed on the clamping plate (23), the toothed plate (65) meshing and connected with the first gear (64), and the end of the toothed plate (65) away from the first gear (64) being fixedly connected to the corresponding clamping plate (23).

6. The pelletizing machine for engineering plastics production according to claim 4, characterized in that: The moving component (7) includes a moving frame (71) mounted on the granulator body (1), a sliding connection between the lifting plate (21) and the moving frame (71), and two second electric push rods (72) symmetrically distributed on the top of the moving frame (71), with the output end of the second electric push rod (72) fixedly connected to the lifting plate (21).

7. The pelletizing machine for engineering plastics production according to claim 1, characterized in that: It also includes a cold water tank (8) installed on the granulator body (1), and a guide groove (81) is provided on the inner side of the cold water tank (8).

8. The pelletizing machine for engineering plastics production according to claim 1, characterized in that: It also includes several traction rollers (9) symmetrically distributed on the granulator body (1), with the outer diameter of the upper end of the traction rollers (9) being smaller than the outer diameter of the lower end.

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