Polycarbonate extruding and granulating device

Abstract

The utility model discloses a polycarbonate extrusion pelletizing device, which belongs to the technical field of polycarbonate processing, and comprises an extrusion equipment body, a plurality of extrusion ports are arranged at the output end of the extrusion equipment body, the plurality of extrusion ports are arranged in a rectangular array, the extrusion ports positioned in the same row form an extrusion group, and a cutting knife is arranged at the top of each extrusion group. The multiple cutting knives are connected through a frame, a driving assembly for driving the frame to reciprocate in the vertical direction is installed at the output end of the extrusion equipment body, a containing groove is formed in the bottom of each extrusion set, the containing grooves are obliquely arranged, cooling water is added into the containing grooves, and cut polycarbonate particles can be rapidly cooled; and bonding is avoided.

Description

Technical Field

[0001] This utility model relates to the field of polycarbonate processing technology, and more specifically, to a polycarbonate extrusion pelletizing device. Background Technology

[0002] Polycarbonate (PC), also known as PC plastic, is a high molecular weight polymer containing carbonate groups in its molecular chain. Based on the structure of the ester groups, it can be classified into various types, including aliphatic, aromatic, and aliphatic-aromatic. Among these, aliphatic and aliphatic-aromatic polycarbonates have lower mechanical properties, limiting their application in engineering plastics; only aromatic polycarbonates have achieved industrialized production. Due to the unique structure of polycarbonate, it has become the fastest-growing general-purpose engineering plastic among the five major engineering plastics.

[0003] Chinese Patent Application No. 202321603381.3 discloses a polycarbonate extrusion pelletizing device, including a worktable and a pelletizing adjustment mechanism. The worktable has evenly distributed support legs threaded to its lower surface. Two symmetrically distributed support plates are fixedly connected to the upper surface of the worktable. A polycarbonate extrusion tube is fixedly connected to the two support plates. A feed pipe is provided at the feed inlet on the outer arc surface of the polycarbonate extrusion tube. A rotating rod is rotatably connected to the inside of the polycarbonate extrusion tube via a bearing. A spiral blade is fixedly sleeved on the outer arc surface of the rotating rod. Evenly distributed die holes are opened at the front end of the polycarbonate extrusion tube. A protective box is fixedly connected to the front side of the upper surface of the worktable. This polycarbonate extrusion pelletizing device allows for quick and free adjustment of the polycarbonate pellet length according to production needs by adjusting the time taken for the pelletizing blade to pass between the two die holes. It is simple to operate and easy to use.

[0004] When implementing the above solution, since extrusion and cutting are carried out simultaneously, after cutting, the polycarbonate particles fall onto the chute plate under the action of gravity. However, the polycarbonate needs to be heated before extrusion, and after cutting, the polycarbonate particles still have a high temperature. The polycarbonate particles will stick to the chute plate, and the cut polycarbonate particles will re-adhere together, which will affect subsequent processing steps. To address the above problems, a solution is proposed below. Utility Model Content

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a polycarbonate extrusion pelletizing device that can rapidly cool the cut polycarbonate pellets and prevent them from sticking together.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A polycarbonate extrusion pelletizing device includes an extrusion equipment body, the output end of which has a plurality of extrusion ports arranged in a rectangular array, the extrusion ports in the same row forming an extrusion group, the top of each extrusion group being provided with a cutting blade, the plurality of cutting blades being connected by a frame, the output end of the extrusion equipment body being equipped with a drive assembly for reciprocating motion of the drive frame in the vertical direction, and the bottom of each extrusion group being provided with a placement groove arranged at an inclination, the placement groove being filled with cooling water.

[0008] Preferably, the drive assembly includes a mounting frame, a drive motor, a drive wheel, a drive frame, and a limiting assembly. The mounting frame is fixed to the output end of the extrusion equipment body. The drive motor is mounted on the mounting frame. The drive frame is mounted on the top of the frame. The drive wheel is arranged inside the drive frame. One end of the drive wheel is mounted on the output end of the drive motor, and the drive wheel and the output end of the drive motor are eccentrically arranged. The limiting assembly is located on both sides of the frame, and the limiting assembly is connected to the output end of the extrusion equipment body and the frame, respectively.

[0009] Preferably, the limiting component includes a guide rail and a slider. The guide rail is fixed to the output end of the extrusion equipment and is arranged vertically. The slider is slidably arranged on the guide rail and is fixedly connected to the frame.

[0010] Preferably, a collection box for collecting polycarbonate particles is horizontally installed at the bottom of the placement trough.

[0011] Preferably, the side of the placement slot is provided with a water inlet for water intake, and the bottom of the placement box is provided with a water outlet for drainage.

[0012] Preferably, a filter plate is arranged in the middle of the placement box, and the filter plate divides the placement box into a drainage section and a storage section.

[0013] Preferably, the storage section has a discharge port on its side, and a sealing door is installed on the discharge port to provide a sealing effect.

[0014] Compared with existing technologies, the advantages of this utility model are:

[0015] I. This solution uses the extrusion equipment to stir, mix, and heat various raw materials, which are then extruded through the extrusion nozzle. Simultaneously, the drive component moves the frame up and down, which in turn moves the cutting blade up and down. The cutting blade cuts the polycarbonate extruded through the extrusion nozzle into granules. The granules fall under their own weight and land in the placement tank. The placement tank contains cooling water, which cools the granules as they land, preventing them from sticking together. Additionally, due to the inclined arrangement of the placement tank, the granules tend to move to one end, preventing accumulation and facilitating collection.

[0016] 2. The drive motor drives the drive wheel to rotate. Since the drive wheel is centrifugally arranged, when the drive wheel rotates, it will drive the drive frame to move back and forth. The drive frame will drive the frame to move up and down back and forth. At the same time, the limiting component will limit the frame to ensure that the frame can only move back and forth in the up and down direction.

[0017] Third, the sliding design of the guide block and guide rail allows the frame to move only along the axial direction of the guide rail, thus playing a restrictive role.

[0018] Fourth, the collection box collects the particles.

[0019] 5. The design of the inlet and outlet ensures that the cooling water inside the collection tank is in a flowing state, thereby ensuring that the cooling water is always at a low temperature and ensuring the cooling effect on the particles.

[0020] 6. The filter plate separates the cooling water and particles. The particles fall onto the filter plate, while the cooling water passes through the filter plate, making it easy to collect the particles.

[0021] 7. The discharge port allows for easy removal of particles from the filter plate into the collection section, and the sealing door provides a seal when the discharge port is not in use. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 This is a front view structural diagram of the present utility model;

[0024] Figure 3 This is an enlarged structural schematic diagram of A in this utility model;

[0025] Figure 4 This is a cross-sectional view of the placement slot and placement box of this utility model;

[0026] Figure 5 This is an enlarged structural schematic diagram of B of this utility model;

[0027] Figure 6 This is a schematic diagram of the drive wheel and drive frame of this utility model.

[0028] Explanation of the labels in the diagram:

[0029] 1. Extrusion equipment body; 2. Extrusion port; 3. Extrusion assembly; 4. Cutting blade; 5. Frame; 6. Drive assembly; 7. Placement slot; 9. Mounting bracket; 10. Drive motor; 11. Drive wheel; 12. Drive frame; 13. Limiting assembly; 14. Guide rail; 15. Slider; 16. Placement box; 17. Water inlet; 18. Water outlet; 19. Filter plate; 20. Drainage section; 21. Storage section; 22. Discharge port; 23. Sealing door. Detailed Implementation

[0030] Example 1:

[0031] Please see Figure 1-6 A polycarbonate extrusion pelletizing device includes an extrusion equipment body 1. Several supporting legs are evenly arranged at the bottom of the equipment body 1. Several extrusion ports 2 are opened at the output end of the extrusion equipment body 1. The extrusion ports 2 are arranged in a rectangular array, and extrusion ports 2 in the same row constitute an extrusion group 3. Various raw materials are stirred, mixed, and heated by the extrusion equipment body 1, and then extruded through the extrusion ports 2.

[0032] Each extrusion group 3 is equipped with a cutting blade 4 at its top. The cutting blade 4 cuts the polycarbonate extruded through the extrusion port 2 to form granules. Several cutting blades 4 are connected by a frame 5. The frame 5 forms several cutting blades 4 into a whole. The frame 5 can drive the cutting blades 4 used at the same time, avoiding the trouble of moving each cutting blade 4 individually. The output end of the extrusion equipment body 1 is equipped with a drive component 6 that drives the frame 5 to reciprocate in the vertical direction.

[0033] The drive assembly 6 includes a mounting frame 9, a drive motor 10, a drive wheel 11, a drive frame 12, and a limiting assembly 13. The mounting frame 9 is fixed to the output end of the extrusion equipment body 1. The drive motor 10 is mounted on the mounting frame 9. The drive frame 12 is mounted on the top of the frame 5. The drive frame 12 is U-shaped. The drive wheel 11 is arranged inside the drive frame 12. The diameter of the drive wheel 11 is adapted to the inner groove of the drive frame 12. One end of the drive wheel 11 is mounted on the output end of the drive motor 10, and the drive wheel 11 and the output end of the drive motor 10 are eccentrically arranged. The limiting assembly 13 is located on both sides of the frame 5. The limiting assembly 13 includes a guide rail 14 and a slider 15. The guide rail 14 is fixed to the output end of the extrusion equipment and is arranged vertically. The slider 15 is slidably arranged on the guide rail 14 and is fixedly connected to the frame 5. The sliding design of the guide block and the guide rail 14 allows the frame 5 to move only along the axial direction of the guide rail 14, thereby playing a limiting role.

[0034] The drive motor 10 drives the drive wheel 11 to rotate. Since the drive wheel 11 is centrifugally arranged, when the drive wheel 11 rotates, it will drive the drive frame 12 to move back and forth. The drive frame 12 will drive the frame 5 to move up and down back and forth. The frame 5 will drive the cutting blade 4 to move up and down back and forth. The cutting blade 4 will cut the polycarbonate extruded through the extrusion port 2 to form particles.

[0035] Each extrusion group 3 has a placement trough 7 at its bottom. The placement trough 7 is fixedly connected to the output end of the extrusion equipment body 1, and the placement trough 7 does not contact the frame 5. The placement trough 7 is arranged at an angle, so that the particles fall on the placement trough 7 under their own gravity. The placement trough 7 contains cooling water. When the particles fall on the placement trough 7, the cooling water will cool the particles and prevent them from sticking together. At the same time, because the placement trough 7 is arranged at an angle, the particles will move to one end, which will prevent them from accumulating and make them easier to collect.

[0036] A collection box 16 for collecting polycarbonate particles is horizontally installed at the bottom of the placement tank 7. The length of the collection box 16 is the same as the length of the placement tank 7, ensuring that the cooling water and particles inside the placement tank 7 can fall completely into the collection box 16. A water inlet 17 is provided on the side of the placement tank 7 for water inlet, and a water outlet 18 is provided at the bottom of the collection box 16 for water outlet. A filter plate 19 is arranged in the middle of the collection box 16. The diameter of the filter holes of the filter plate 19 is smaller than the diameter of the particles to prevent the particles from passing through the filter plate 19. The filter plate 19 divides the collection box 16 into a drainage section 20 at the bottom and a collection section 21 at the top. A discharge port 22 is provided on the side of the collection section 21. The bottom of the discharge port 22 is at the same height as the top of the filter plate 19, so as to facilitate the removal of particles from the collection section 21 through the discharge port 22. A sealing door 23 is installed on the discharge port 22 for sealing. The sealing door 23 and the discharge port 22 are connected by an interference fit.

[0037] The placement box 16 collects the particles. The design of the inlet 17 and outlet 18 ensures that the cooling water inside the placement tank 7 is in a flowing state, thereby ensuring that the cooling water is always at a low temperature and ensuring the cooling effect on the particles. The filter plate 19 separates the cooling water and particles. The particles fall onto the filter plate 19, and the cooling water passes through the filter plate 19, which facilitates the collection of particles. The discharge port 22 facilitates the removal of particles from the collection part 21. The sealing door 23 provides a sealing effect when the discharge port 22 is not in use.

[0038] Working principle:

[0039] Before use, connect the inlet 17 to the external water inlet pipe and the outlet 18 to the external drain pipe. The cooling water is introduced into the placement tank 7 through the inlet pipe and the inlet 17. After passing through the placement tank 7 and the placement box 16, the cooling water flows out through the outlet 18 and the drain pipe, forming a flowing cooling water flow. This ensures that the cooling water is always kept at a low temperature, thus ensuring the cooling effect on the particles.

[0040] Various materials used to produce polycarbonate are heated into the extrusion equipment body 1. The materials are stirred, heated, and extruded by the extrusion equipment body 1. The materials are extruded through the extrusion port 2. At the same time, the drive motor 10 drives the drive wheel 11 to rotate. The drive wheel 11 rotates inside the inner groove of the drive frame 12, thereby driving the drive frame 12 to move up and down. The drive frame 12 drives the frame 5 to move. Since the frame 5 is limited by the guide rail 14 and the slider 15, the frame 5 can only move along the axial direction of the guide rail 14. The frame 5 drives the cutting blade 4 to move. The cutting blade 4 cuts the material extruded from the corresponding extrusion group 3 to form particles. The particles fall under their own gravity and are received by the placement tank 7. The cooling water inside the placement tank 7 cools the particles to prevent them from sticking together. At the same time, the inclined placement tank 7 causes the particles and cooling water to move towards the placement box 16 until they all fall into the placement box 16.

[0041] When cooling water and particles enter the placement box 16, the particles are caught by the filter plate 19 and remain in the storage section 21, while the cooling water falls into the drain section 20 through the filter holes on the filter plate 19 and flows out through the outlet 18 at the bottom of the drain section 20, thus separating the particles and cooling water. By opening the sealing door 23, the particles on the filter plate 19 can be easily removed from the storage section 21 through the discharge port 22, making it convenient to use.

Claims

1. A polycarbonate extrusion pelletizing device, characterized in that: The device includes an extrusion equipment body (1), the output end of which is provided with a plurality of extrusion ports (2), the plurality of extrusion ports (2) are arranged in a rectangular array, the extrusion ports (2) located in the same row constitute an extrusion group (3), each extrusion group (3) is provided with a cutting blade (4) at the top, the plurality of cutting blades (4) are connected by a frame (5), the output end of the extrusion equipment body (1) is equipped with a drive assembly (6) for the drive frame (5) to reciprocate in the vertical direction, each extrusion group (3) is provided with a placement groove (7) at the bottom, the placement groove (7) is arranged at an inclination, and cooling water is added inside the placement groove (7).

2. The polycarbonate extrusion pelletizing device according to claim 1, characterized in that: The drive assembly (6) includes a mounting frame (9), a drive motor (10), a drive wheel (11), a drive frame (12), and a limiting assembly (13). The mounting frame (9) is fixed on the output end of the extrusion equipment body (1). The drive motor (10) is mounted on the mounting frame (9). The drive frame (12) is mounted on the top of the frame (5). The drive wheel (11) is arranged inside the drive frame (12). One end of the drive wheel (11) is mounted on the output end of the drive motor (10), and the drive wheel (11) and the output end of the drive motor (10) are eccentrically arranged. The limiting assembly (13) is located on both sides of the frame (5), and the limiting assembly (13) is connected to the output end of the extrusion equipment body (1) and the frame (5) respectively.

3. A polycarbonate extrusion pelletizing device according to claim 2, characterized in that: The limiting component (13) includes a guide rail (14) and a slider (15). The guide rail (14) is fixed on the output end of the extrusion device and is arranged vertically. The slider (15) is slidably arranged on the guide rail (14) and is fixedly connected to the frame (5).

4. The polycarbonate extrusion pelletizing device according to claim 1, characterized in that: The bottom of the placement trough (7) is horizontally fitted with a placement box (16) for collecting polycarbonate particles.

5. A polycarbonate extrusion pelletizing device according to claim 4, characterized in that: The side of the placement trough (7) is provided with a water inlet (17) for water intake, and the bottom of the placement box (16) is provided with a water outlet (18) for drainage.

6. A polycarbonate extrusion pelletizing device according to claim 4, characterized in that: A filter plate (19) is arranged in the middle of the placement box (16), which divides the placement box (16) into a drainage section (20) and a storage section (21).

7. A polycarbonate extrusion pelletizing device according to claim 6, characterized in that: The storage section (21) has a discharge port (22) on its side, and a sealing door (23) is installed on the discharge port (22) to provide a sealing function.

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