A rapid prototyping device for PET sheets

Abstract

This utility model discloses a rapid prototyping device for PET sheets, including a base, a mounting frame, a mounting plate, an extrusion roller A, a cooling head, and an adjustment structure. The mounting frame is mounted on the base, a fixing plate is mounted on the mounting frame, and another mounting plate is mounted on the fixing plate. An extrusion roller A is rotatably mounted between the mounting plates. A cooling chamber is formed in the extrusion roller A. A cooling head is mounted on the mounting plate, and one end of the cooling head is rotatably connected to the extrusion roller A. The cooling head is equipped with a water inlet and a water outlet. The water inlet is connected to a cold water pipe in the cooling head, and the water outlet is connected to a return water pipe in the cooling head. A coolant generator is externally connected to the water inlet and outlet. This utility model can rapidly cool the molten material, enabling rapid prototyping of PET sheets while maintaining shape stability. It improves the cooling effect and plasticizing efficiency, thereby enhancing the molding quality and performance of the PET sheets.

Description

Technical Field

[0001] This utility model relates to the field of rapid prototyping of PET sheets, specifically a rapid prototyping device for PET sheets. Background Technology

[0002] PET sheet is a high-performance thermoplastic sheet, mainly composed of polyethylene terephthalate (PET) and polybutylene terephthalate (PBT). It has good transparency, barrier properties, impact resistance, heat resistance, chemical stability, and environmental friendliness, and is widely used in packaging materials, industrial applications, automotive parts, and building materials. When PET sheet is produced and processed, molten PET is extruded from the extruder and then cooled and plasticized through extrusion.

[0003] A search revealed that Chinese utility model patent CN219213847U discloses a molding device for producing PET sheets, comprising a barrel body with a heating tube installed on the inner wall of the barrel body, a support plate on the right side of the barrel body, an upper roller above a lower roller, and adjustment mechanisms on both sides of the upper roller. Each adjustment mechanism includes a fixed block, a rotating rod, and a stop block. One side of the upper roller is rotatably connected to one side of the fixed block. Stop blocks are fixedly connected to the upper and lower middle parts of the rotating rod, and the bottom of the rotating rod is threadedly connected to the top of the support plate. A first motor is fixedly connected to the top of one side of the fixed plate. In this utility model, rotating the rotating rod allows its bottom to enter and exit the support plate, thereby driving the stop blocks to raise and lower the upper roller, thus adjusting the distance between the upper and lower rollers. This allows for adjustment of the molding thickness without stopping the machine, increasing ease of use.

[0004] The technical solution in the application document still has shortcomings: during the extrusion molding process of PET melt extrusion between the upper and lower rollers, the cooling effect and plasticizing efficiency of the upper and lower rollers are not ideal, which affects the molding quality and performance of PET sheets. Summary of the Invention

[0005] The purpose of this invention is to provide a rapid prototyping device for PET sheets to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a rapid prototyping device for PET sheets, comprising a base, a mounting frame, a mounting plate, an extrusion roller A, a cooling head, and an adjustment structure. The base is mounted on the mounting frame, the mounting frame is mounted on a fixing plate, and the fixing plate is mounted on another mounting plate. An extrusion roller A is rotatably mounted between the mounting plates. A cooling chamber is formed in the extrusion roller A. A cooling head is mounted on the mounting plate, one end of which is rotatably connected to the extrusion roller A. The cooling head is provided with an inlet and an outlet. The inlet is connected to a cold water pipe within the cooling head, and the outlet is connected to a return water pipe within the cooling head. A coolant generator is externally connected to the inlet and outlet.

[0007] By adopting the above technical solution, the inlet and outlet water heads on the cooling head are connected to the coolant generator. The cold water generated by the coolant generator enters the cold water pipe in the cooling head through the inlet water head, and then enters the cooling chamber to cool the extrusion roller A. After heat exchange, the water flows back to the coolant generator through the return water pipe and the outlet water head for cooling and recycling. This ensures continuous cooling of the extrusion roller A during operation, improves cooling efficiency, and allows the PET melt extruded from the extrusion head to be rapidly cooled when it passes through the extrusion roller A. This enables the ET sheet to be quickly formed and maintains a stable shape, improving the cooling effect and plasticizing efficiency, and thus enhancing the forming quality and performance of the PET sheet.

[0008] Preferably, the mounting frame is provided with extrusion rollers B and C, which have the same structure as extrusion roller A, and the bottom of extrusion rollers B and C is provided with an adjustment structure.

[0009] By adopting the above technical solution, the structure can be adjusted to move extrusion rollers B and C. By adjusting the positions of extrusion rollers B and C, the distance between each extrusion roller can be adjusted to meet the production needs of PET sheets of different thicknesses, thereby increasing the versatility and flexibility of the molding equipment. The identical structural design of extrusion rollers B and C with extrusion roller A further improves the cooling effect and the molding quality of PET sheets.

[0010] Preferably, a motor A is installed in the base, a lead screw is installed at the power shaft end of the motor A, a ball nut is threaded on the lead screw, a support plate is installed on the ball nut, an extrusion head is installed on the support plate, and a feeding pipe on the extrusion head is connected to a PET melting machine.

[0011] Using the above technical solution, motor A rotates in both directions, driving the lead screw to rotate in both directions as well. The ball nut moves on the lead screw, which in turn moves the support plate. The support plate then moves the extrusion head, thereby adjusting the extrusion position of the extrusion head to adapt to the production needs of PET sheets of different widths. This further increases the versatility and flexibility of the molding equipment. The PET melting machine feeds molten PET into the extrusion head through the feeding pipe. The extrusion head evenly extrudes the molten PET, which is then continuously extruded and formed by extrusion rollers A, B, and C.

[0012] Preferably, a motor B is mounted on the mounting plate, and the power shaft end of the motor B is connected to the extrusion roller A.

[0013] Using the above technical solution, motor B drives the extrusion roller A to rotate, so that the PET melt can be extruded evenly and continuously when passing through, ensuring the thickness uniformity and surface flatness of the PET sheet.

[0014] Preferably, the roller wall of the extrusion roller A is configured as a metal ring.

[0015] By adopting the above technical solution, the metal ring enhances the heat conduction performance of the extrusion roller A, allowing the coolant in the cooling chamber to carry away heat more effectively, further improving the cooling efficiency. At the same time, the metal ring has high hardness and wear resistance, which can effectively resist the wear of PET melt during the extrusion process and extend the service life of the extrusion roller A.

[0016] Preferably, the adjustment structure includes a drive motor, a threaded rod, and a threaded block.

[0017] Using the above technical solution, the drive motor drives the threaded rod to rotate, and the threaded block moves on the threaded rod. By adjusting the position of the threaded block, the positions of the extrusion rollers B and C can be adjusted.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: By connecting the water inlet and outlet heads on the cooling head to the coolant machine, the cold water generated by the coolant machine enters the cold water pipe in the cooling head through the water inlet head, and then enters the cooling chamber to cool the extrusion roller A. After heat exchange, the water flows back to the coolant machine through the water outlet head from the return water pipe for cooling and recycling. The extrusion rollers B and C on the mounting frame are also connected to the coolant machine, ensuring continuous cooling of each extrusion roller during operation and improving cooling efficiency. The PET melting machine feeds the PET melt into the extrusion head through the feeding pipe. The extrusion head extrudes the PET melt evenly. Through continuous extrusion molding and cooling by extrusion rollers A, B, and C, the melt can be cooled quickly, enabling the ET sheet to be quickly molded and maintain stable shape. This improves the cooling effect and plasticizing molding efficiency, thereby enhancing the molding quality and performance of the PET sheet. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a side sectional view of the present invention.

[0021] Figure 3 This is a partial schematic diagram of the front structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the rear structure of this utility model.

[0023] In the diagram: 1. Base; 2. Mounting bracket; 3. Motor A; 4. Lead screw; 5. Ball nut; 6. Support plate; 7. Extrusion head; 8. Feed pipe; 9. Mounting plate; 10. Extrusion roller A; 11. Cooling chamber; 12. Cooling head; 13. Water inlet; 14. Water outlet; 15. Extrusion roller B; 16. Extrusion roller C; 17. Adjustment structure; 18. Metal ring; 19. Motor B; 20. Fixing plate; 21. Cold water pipe; 22. Return water pipe. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0025] Please see Figure 1-4This utility model provides an embodiment of a rapid prototyping device for PET sheets, comprising a base 1, a mounting frame 2, a mounting plate 9, an extrusion roller A10, a cooling head 12, and an adjustment structure 17. The mounting frame 2 is mounted on the base 1, a fixing plate 20 is mounted on the mounting frame 2, and the mounting plate 9 is mounted on the fixing plate 20. The extrusion roller A10 is rotatably mounted between the mounting plates 9. A cooling chamber 11 is formed in the extrusion roller A10. The cooling head 12 is mounted on the mounting plate 9. One end of the cooling head 12 is rotatably connected to the extrusion roller A10. The cooling head 12 is provided with a water inlet 13 and a water outlet 14. The water inlet 13 is connected to a cold water pipe 21 provided in the cooling head 12, and the water outlet 14 is connected to a return water pipe 22 provided in the cooling head 12. The water inlet 13 and the water outlet 14 are externally connected to a coolant generator. The inlet head 13 and outlet head 14 on the cooling head 12 are connected to the coolant generator. The cold water generated by the coolant generator enters the cold water pipe 21 in the cooling head 12 through the inlet head 13, and then enters the cooling chamber 11 to cool the extrusion roller A10. After heat exchange, the water flows back to the coolant generator through the return water pipe 22 and the outlet head 14 for cooling and recycling. This ensures continuous cooling of the extrusion roller A10 during operation and improves cooling efficiency. When the PET melt extruded by the extrusion head 7 passes through the extrusion roller A10, it can be quickly cooled, enabling the ET sheet to be quickly formed and maintain a stable shape. This improves the cooling effect and plasticizing efficiency, thereby enhancing the forming quality and performance of the PET sheet.

[0026] The mounting frame 2 is equipped with extrusion rollers B15 and C16, which have the same structure as extrusion roller A10. An adjustment structure 17 is provided at the bottom of extrusion rollers B15 and C16. The adjustment structure 17 allows for the movement of extrusion rollers B15 and C16. By adjusting the positions of extrusion rollers B15 and C16, the distance between each extrusion roller can be adjusted to accommodate the production needs of PET sheets of different thicknesses, increasing the versatility and flexibility of the molding equipment. The identical structural design of extrusion rollers B15 and C16 with extrusion roller A10 further improves the cooling effect and the molding quality of the PET sheets.

[0027] A motor A3 is installed in the base 1. A lead screw 4 is installed on the power shaft end of the motor A3. A ball nut 5 is threaded onto the lead screw 4. A support plate 6 is installed on the ball nut 5. An extrusion head 7 is installed on the support plate 6. A feeding pipe 8 is provided on the extrusion head 7 and connected to a PET melting machine. The motor A3 rotates forward and backward, driving the lead screw 4 to rotate forward and backward. The ball nut 5 moves on the lead screw 4, which in turn drives the support plate 6 to move. The support plate 6 then drives the extrusion head 7 to move, thereby adjusting the extrusion position of the extrusion head 7 to adapt to the production needs of PET sheets of different widths. This further increases the versatility and flexibility of the molding equipment. The PET melting machine feeds molten PET into the extrusion head 7 through the feeding pipe 8. The extrusion head 7 extrudes the molten PET evenly and continuously extrudes it through extrusion rollers A10, B15, and C16 to form the final product.

[0028] A motor B19 is mounted on the mounting plate 9, and the power shaft of the motor B19 is connected to the extrusion roller A10. The motor B19 drives the extrusion roller A10 to rotate, so that the molten PET material can be extruded evenly and continuously as it passes through, ensuring the thickness uniformity and surface flatness of the PET sheet.

[0029] The extrusion roller A10 has a metal ring 18 on its roller wall. The metal ring 18 enhances the heat conduction performance of the extrusion roller A10, allowing the coolant in the cooling chamber 11 to carry away heat more effectively, further improving the cooling efficiency. At the same time, the metal ring 18 has high hardness and wear resistance, which can effectively resist the wear of PET melt during the extrusion process and extend the service life of the extrusion roller A10.

[0030] The adjustment structure 17 includes a drive motor, a threaded rod, and a threaded block. The drive motor drives the threaded rod to rotate, and the threaded block moves on the threaded rod. By adjusting the position of the threaded block, the positions of the extrusion rollers B15 and C16 can be adjusted.

[0031] The motor equipment described in this application is equipped with a circuit controller and a brake mechanism. The circuit controller allows the motor to flexibly adjust its rotation direction and angle according to actual operating requirements, significantly improving the equipment's operational flexibility and safety performance. The brake mechanism reliably locks the motor's position when it stops, preventing accidental displacement due to inertia and ensuring the stability and safety of the device when it is stopped.

[0032] Working principle: The inlet head 13 and outlet head 14 on the cooling head 12 are connected to the coolant generator. The cold water generated by the coolant generator enters the cold water pipe 21 in the cooling head 12 through the inlet head 13, and then enters the cooling chamber 11 to cool the extrusion roller A10. After heat exchange, the water flows back to the coolant generator through the return water pipe 22 and the outlet head 14 for cooling and recycling. The extrusion rollers B15 and C16 on the mounting frame 2 are also connected to the coolant generator, ensuring continuous cooling of each extrusion roller during operation and improving cooling efficiency. The PET melting machine feeds the molten PET material into the extrusion head 7 through the feeding pipe 8, and the material is extruded. The first section 7 evenly extrudes the molten PET material, which is then continuously extruded and cooled by extrusion rollers A10, B15, and C16. This rapid cooling of the molten material allows for quick forming of the PET sheet, maintaining its shape stability and improving the cooling effect and plasticizing efficiency. Consequently, the forming quality and performance of the PET sheet are enhanced. The adjustment structure 17 allows for the movement of extrusion rollers B15 and C16. By adjusting the positions of extrusion rollers B15 and C16, the distance between each extrusion roller can be adjusted to meet the production needs of PET sheets of different thicknesses, increasing the versatility and flexibility of the forming equipment.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A PET sheet rapid forming device, comprising a base (1), a mounting frame (2), a mounting plate (9), an extrusion roller A (10), a cooling head (12) and an adjusting structure (17), characterized in that: A mounting bracket (2) is installed on the base (1), a fixing plate (20) is installed on the mounting bracket (2), a mounting plate (9) is installed on the fixing plate (20), a squeezing roller A (10) is rotatably installed between the mounting plates (9), a cooling chamber (11) is opened in the squeezing roller A (10), a cooling head (12) is installed on the mounting plate (9), one end of the cooling head (12) is rotatably connected to the squeezing roller A (10), a water inlet head (13) and a water outlet head (14) are provided on the cooling head (12), the water inlet head (13) is connected to the cold water pipe (21) provided in the cooling head (12), the water outlet head (14) is connected to the return water pipe (22) provided in the cooling head (12), and the water inlet head (13) and the water outlet head (14) are connected to a coolant machine.

2. The PET sheet rapid forming device according to claim 1, characterized in that: The mounting frame (2) is provided with an extrusion roller B (15) and an extrusion roller C (16). The extrusion roller B (15) and the extrusion roller C (16) have the same structure as the extrusion roller A (10). An adjustment structure (17) is provided at the bottom of the extrusion roller B (15) and the extrusion roller C (16).

3. The PET sheet rapid prototyping device according to claim 1, characterized in that: The base (1) is equipped with a motor A (3), the motor A (3) is equipped with a lead screw (4) at the power shaft end, a ball nut (5) is threaded on the lead screw (4), a support plate (6) is installed on the ball nut (5), an extrusion head (7) is installed on the support plate (6), and a feeding pipe (8) on the extrusion head (7) is connected to a PET melting machine.

4. The PET sheet rapid prototyping device according to claim 1, characterized in that: The mounting plate (9) is equipped with a motor B (19), and the power shaft end of the motor B (19) is connected to the extrusion roller A (10).

5. The PET sheet rapid forming device according to claim 2, characterized in that: The roller wall of the extrusion roller A (10) is configured as a metal ring (18).

6. The PET sheet rapid prototyping device according to claim 1, characterized in that: The adjustment structure (17) includes a drive motor, a threaded rod, and a threaded block.

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