High-speed extrusion molding production device for plastic pipe
By combining internal and external heating and insulation measures, the problem of uneven heating in plastic extrusion molding is solved, the melting efficiency and molding speed are improved, and the uniformity of plastic pipe wall thickness and energy utilization efficiency are ensured.
Patent Information
- Application Number
- CN202422644098.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-10-03
- Estimated Expiration
- 2034-10-31
AI Technical Summary
In existing plastic extrusion molding devices, the extruder barrel heats the plastic particles unevenly, resulting in low melting efficiency and limiting the extrusion screw speed and plastic pipe molding speed.
The internal and external combined heating method is adopted. The electric heating rod inside the extrusion screw and the external heating sleeve are used to evenly heat the plastic particles inside the extruder barrel. The molding column and conical slope are used to ensure the uniformity of the plastic pipe wall thickness, and the insulation sleeve is used to reduce heat loss.
It improves the melting efficiency of plastic particles and the molding speed of plastic pipes, ensures the uniformity of the wall thickness of plastic pipes, and reduces energy consumption.
Smart Images
Figure CN223407426U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of extrusion molding, in particular to a high-speed extrusion molding production device for plastic pipes. Background Art
[0002] Plastic pipe extrusion is a processing method that uses an extruder to heat and melt plastic raw materials and form continuous tubular products with a specific cross-section through a mold. Plastic pipe extrusion is widely used in the production of various pipes, such as water supply and drainage pipes, wire and cable sheaths, gas pipelines, etc.
[0003] At present, the speed of plastic extrusion molding is affected by the rotation speed of the extrusion screw, and the rotation speed of the extrusion screw is easily restricted by the melting degree of the plastic particles inside the extruder barrel. In particular, when the existing extruder barrel heats the plastic particles inside it, it only heats the plastic particles from the outside of the extruder barrel. The heating of the plastic particles is not uniform, which reduces the melting efficiency of the plastic particles and thus reduces the speed of plastic pipe extrusion molding. For this reason, we propose a high-speed extrusion molding production device for plastic pipes. Utility Model Content
[0004] The purpose of the utility model is to provide a high-speed extrusion molding production device for plastic pipes. The utility model has the advantages of being able to uniformly heat the plastic particles inside the extruder barrel to melt them during the extrusion molding process of the plastic pipe, thereby improving the melting efficiency of the plastic particles, thereby eliminating the limitation on the increase of the rotation speed of the extrusion screw, and improving the speed of the plastic pipe extrusion molding. It solves the problem that the speed of the current plastic extrusion molding is affected by the rotation speed of the extrusion screw, and the rotation speed of the extrusion screw is easily restricted by the melting degree of the plastic particles inside the extruder barrel. In particular, when the existing extruder barrel heats the plastic particles inside the extruder barrel, the plastic particles are only heated from the outside of the extruder barrel, and the heating of the plastic particles is not uniform, which reduces the melting efficiency of the plastic particles and thus reduces the speed of the plastic pipe extrusion molding.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a high-speed extrusion molding production device for plastic pipes, comprising an extruder barrel, a transmission box and a molding tube are fixedly installed at both ends of the extruder barrel, a drive motor is fixedly installed on the outside of the transmission box, an extrusion screw is rotatably installed inside the extruder barrel, an electric heating rod is fixedly installed inside the extrusion screw, a heating jacket is fixedly installed on the outer surface of the extruder barrel, and a storage hopper is fixedly installed on the side of the upper surface of the extruder barrel close to the transmission box.
[0006] Preferably, a hollow coupling is rotatably installed inside the transmission box, a transmission gear is fixedly sleeved on the outer surface of the hollow coupling, one end of the hollow coupling is fixedly connected to the end of the extrusion screw close to the transmission box, the end of the hollow coupling is fixedly connected to a rotating electric connector, and the heating rod and the rotating electric connector are electrically connected, the end of the output shaft of the drive motor is fixedly connected to a motor gear, and the motor gear and the transmission gear are meshed, and the motor gear and the transmission gear are both located inside the transmission box.
[0007] Preferably, a heat-insulating sleeve is fixedly sleeved on the outer surface of the extruder barrel, and the heating sleeve is located between the heat-insulating sleeve and the extruder barrel.
[0008] Preferably, one end of the extrusion screw close to the forming tube is fixedly connected to a forming column, and the forming column is located inside the forming tube.
[0009] Preferably, a conical slope is provided at the connection between the forming column and the extrusion screw.
[0010] Preferably, fixed columns are fixedly installed near both ends of the lower surface of the extruder barrel.
[0011] Preferably, the inner sides of the two fixed columns are fixedly connected by a connecting frame.
[0012] Compared with the prior art, the beneficial effects of the present invention are as follows:
[0013] 1. The utility model provides an extruder barrel, an extrusion screw, an electric heating rod, a heating sleeve, a transmission case, a drive motor and a forming tube, so as to achieve the goal of uniformly heating the plastic particles inside the extruder barrel to melt them during the plastic tube extrusion molding process, thereby improving the efficiency of melting the plastic particles, thereby eliminating the limitation on increasing the speed of the extrusion screw and improving the speed of plastic tube extrusion molding. The plastic particle raw material is placed inside the storage hopper, and the drive motor drives the extrusion screw to rotate and push the plastic particles. The plastic particles are subjected to shear friction. At the same time, the heating sleeve heats the plastic particles inside the extruder barrel from the outside, and the electric heating rod inside the extrusion screw heats the plastic particles from the inside of the extruder barrel, so that the plastic particles are evenly heated to quickly become molten. The molten plastic is formed into a plastic tube at the forming tube.
[0014] 2. The utility model achieves the effect of improving the uniformity of the wall thickness of the plastic tube after molding, thereby improving the quality of the plastic tube by providing the molding column and the conical slope. The molten plastic particles inside the extruder barrel are squeezed between the conical slope and the inner wall of the molding tube, and go out from the gap between the outer surface of the molding column and the inner wall of the molding tube to form a plastic tube with a certain wall thickness. By replacing molding tubes with different inner diameters, plastic tubes with different wall thicknesses can be molded. In the molding process, the molding column rotates with the extrusion screw and continuously contacts the inner wall of the plastic tube being molded, so that the wall thickness of the plastic tube after molding is more uniform.
[0015] 3. The utility model provides a heat-insulating sleeve to keep the extruder barrel and the heating sleeve warm, thereby reducing heat loss of both and thus reducing energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;
[0017] Figure 2 This is a schematic diagram of the partial three-dimensional structure of the transmission box of the utility model;
[0018] Figure 3 This is a schematic diagram of the partial three-dimensional structure of the extruder barrel of the utility model;
[0019] Figure 4 This is a schematic diagram of the partial three-dimensional structure of the extrusion screw of the utility model.
[0020] Figure numerals: 1. transmission box; 2. storage hopper; 3. extruder barrel; 4. forming tube; 5. fixed column; 6. connecting frame; 7. drive motor; 8. rotating electrical connector; 9. hollow coupling; 10. transmission gear; 11. motor gear; 12. extrusion screw; 13. heating jacket; 14. insulation jacket; 15. electric heating rod; 16. forming column; 17. conical slope. DETAILED DESCRIPTION
[0021] The technical solution of the present invention is further described below with reference to the accompanying drawings and specific embodiments.
[0022] Example 1
[0023] like Figures 1-4As shown, the utility model proposes a high-speed extrusion molding production device for plastic pipes, including an extruder barrel 3, a transmission box 1 and a molding tube 4 are fixedly installed at both ends of the extruder barrel 3, a drive motor 7 is fixedly installed on the outside of the transmission box 1, an extrusion screw 12 is rotatably installed inside the extruder barrel 3, an electric heating rod 15 is fixedly installed inside the extrusion screw 12, a hollow connecting shaft 9 is rotatably installed inside the transmission box 1, the hollow connecting shaft 9 passes through the transmission box 1, and the hollow connecting shaft 9 is respectively located on both sides of the outside of the transmission box 1. A transmission gear 10 is fixedly sleeved on the outer surface of the hollow connecting shaft 9, and one end of the hollow connecting shaft 9 is close to the extrusion screw 12. One end of the transmission box 1 is fixedly connected, and the end of the hollow coupling 9 is fixedly connected to a rotating electric connector 8, and the electric heating rod 15 is electrically connected to the rotating electric connector 8. The power supply line is electrically connected to the electric heating rod 15 through the rotating electric connector 8. When the electric heating rod 15 rotates, the power supply line will not cause the rotation and entanglement of the power supply line. The end of the output shaft of the drive motor 7 is fixedly connected to a motor gear 11, and the motor gear 11 and the transmission gear 10 are engaged. The motor gear 11 and the transmission gear 10 are both located inside the transmission box 1. The drive motor 7 drives the hollow coupling 9 to rotate through the motor gear 11 and the transmission gear 10, thereby driving the extrusion screw 12 to rotate.
[0024] A heating sleeve 13 is fixedly installed on the outer surface of the extruder barrel 3, and an insulation sleeve 14 is fixedly connected to the outer surface of the extruder barrel 3, and the heating sleeve 13 is located between the insulation sleeve 14 and the extruder barrel 3. The insulation sleeve 14 keeps the extruder barrel 3 and the heating sleeve 13 warm, so as to reduce the heat loss of both, thereby reducing energy consumption. A storage hopper 2 is fixedly installed on the side of the upper surface of the extruder barrel 3 close to the transmission box 1, and fixed columns 5 are fixedly installed on the lower surface of the extruder barrel 3 near both ends. The inner sides of the two fixed columns 5 are fixedly connected by a connecting frame 6. The two fixed columns 5 play a role of fixed support for the extruder barrel 3, and the connecting frame 6 can improve the stability between the fixed columns 5 and the extruder barrel 3.
[0025] When the utility model is in use, the plastic granule raw material is placed inside the storage hopper 2, the driving motor 7 drives the extrusion screw 12 to rotate and push the plastic granules, and the plastic granules are subjected to shear friction. At the same time, the heating sleeve 13 heats the plastic granules inside the extruder barrel 3 from the outside, and the electric heating rod 15 inside the extrusion screw 12 heats the plastic granules from the inside of the extruder barrel 3, so that the plastic granules are evenly heated to quickly become a molten state, and the molten plastic is formed into a plastic tube at the molding tube 4.
[0026] Example 2
[0027] like Figure 1 、 Figure 3 and Figure 4As shown, the utility model proposes a high-speed extrusion molding production device for plastic pipes. Compared with the first embodiment, this embodiment also includes an extrusion screw 12 having one end near the molding tube 4 fixedly connected to a molding column 16, and the molding column 16 is located inside the molding tube 4, and a conical slope 17 is provided at the connection between the molding column 16 and the extrusion screw 12.
[0028] In this embodiment, the molten plastic particles inside the extruder barrel 3 are squeezed between the conical slope 17 and the inner wall of the molding tube 4, and go out from the gap between the outer surface of the molding column 16 and the inner wall of the molding tube 4 to form a plastic tube with a certain wall thickness. By replacing the molding tube 4 with a different inner diameter, plastic tubes with different wall thicknesses can be formed. In the molding process, the molding column 16 rotates with the extrusion screw 12 and continuously contacts the inner wall of the plastic tube being molded, so that the wall thickness of the plastic tube after molding is more uniform.
[0029] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.
Claims
1. A high-speed extrusion production device for plastic pipes, comprising an extruder barrel (3), characterized in that: A transmission box (1) and a forming tube (4) are fixedly installed at both ends of the extruder barrel (3), a driving motor (7) is fixedly installed on the outside of the transmission box (1), an extrusion screw (12) is rotatably installed inside the extruder barrel (3), an electric heating rod (15) is fixedly installed inside the extrusion screw (12), a heating sleeve (13) is fixedly installed on the outer surface of the extruder barrel (3), and a storage hopper (2) is fixedly installed on the side of the upper surface of the extruder barrel (3) close to the transmission box (1).
2. The high-speed extrusion molding production device for plastic pipes according to claim 1, characterized in that: A hollow connecting shaft (9) is rotatably mounted inside the transmission box (1), and a transmission gear (10) is fixedly sleeved on the outer surface of the hollow connecting shaft (9). One end of the hollow connecting shaft (9) is fixedly connected to an end of the extrusion screw (12) close to the transmission box (1). The end of the hollow connecting shaft (9) is fixedly connected to a rotating electric connector (8), and the electric heating rod (15) is electrically connected to the rotating electric connector (8). The end of the output shaft of the drive motor (7) is fixedly connected to a motor gear (11), and the motor gear (11) and the transmission gear (10) are meshed. The motor gear (11) and the transmission gear (10) are both located inside the transmission box (1).
3. The high-speed extrusion molding production device for plastic pipes according to claim 1, characterized in that: The outer surface of the extruder barrel (3) is fixedly sleeved with a heat-insulating sleeve (14), and the heating sleeve (13) is located between the heat-insulating sleeve (14) and the extruder barrel (3).
4. The high-speed extrusion molding production device for plastic pipes according to claim 1, characterized in that: One end of the extrusion screw (12) close to the forming tube (4) is fixedly connected to a forming column (16), and the forming column (16) is located inside the forming tube (4).
5. The high-speed extrusion molding production device for plastic pipes according to claim 4, characterized in that: A conical slope (17) is provided at the connection between the forming column (16) and the extrusion screw (12).
6. The high-speed extrusion molding production device for plastic pipes according to claim 1, characterized in that: Fixed columns (5) are fixedly installed near both ends of the lower surface of the extruder barrel (3).
7. The high-speed extrusion molding production device for plastic pipes according to claim 6, characterized in that: The inner sides of the two fixed columns (5) are fixedly connected via a connecting frame (6).