Ultrafine fluoroplastic wire high-temperature high-speed extruder with temperature control device
By adopting a dynamic temperature-controlled pressing plate design in the fluoroplastic wire extruder, flexible adjustment and precise control of the temperature control zone are achieved, solving the problem of inaccurate temperature caused by fixed temperature control and improving product quality and production stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 苏州晶莹达自动化科技有限公司
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-28
AI Technical Summary
The temperature control device in existing fluoroplastic wire extruders is fixed in position and cannot be flexibly adjusted according to temperature changes, resulting in inaccurate temperature control during high-temperature and high-speed extrusion, which affects product quality.
The design of the dynamic temperature-controlled pressing plate is adopted. Through the movement of the seat, linear guide rail and hydraulic cylinder, the temperature control area can be dynamically adjusted. Combined with the liquid passage and electromagnetic induction heating element, it can achieve precise temperature control of local areas of the extrusion cylinder.
It improves the accuracy of temperature control and process adaptability, avoids the problems of fluoroplastic material decomposition and uneven coating, and enhances product quality and production stability.
Smart Images
Figure CN224170431U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wire production equipment technology, specifically a high-temperature and high-speed extruder for ultra-fine fluoroplastic wires with a temperature control device. Background Technology
[0002] Fluoroplastics are widely used in the insulation layer manufacturing of ultrafine wires due to their excellent high-temperature resistance, corrosion resistance, and electrical insulation properties. In the production of fluoroplastic wires, the extrusion process is one of the key steps, directly affecting the dimensional accuracy and surface quality of the product. Especially during high-temperature, high-speed extrusion, achieving stable and uniform temperature control becomes a crucial factor influencing product quality.
[0003] Most existing fluoroplastic wire extruders adopt a fixed temperature control structure, such as a fixed heating coil or cooling air duct set outside the extrusion barrel. The position of the coil is not adjustable, and the temperature control area cannot be flexibly adjusted according to the temperature changes during the actual extrusion process. Although this structure is simple, it has obvious limitations in practical applications. For example, during high-temperature and high-speed extrusion, excessively high or uneven local temperatures can easily lead to the decomposition of fluoroplastic materials or uneven coating thickness, affecting the mechanical and electrical properties of the wire. Utility Model Content
[0004] The purpose of this invention is to provide a high-temperature, high-speed extruder for ultrafine fluoroplastic wires with a temperature control device, in order to solve the problems mentioned in the background art, where the temperature control device of the current fluoroplastic wire extruder is fixed in position and cannot be flexibly adjusted according to temperature changes, resulting in inaccurate temperature control and unstable product quality during high-temperature, high-speed extrusion.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature, high-speed extruder for ultrafine fluoroplastic wires with a temperature control device, comprising a base, a driving device and an extrusion cylinder respectively provided on the top of the base, movable seats provided on both the front and rear sides of the extrusion cylinder, the bottom end of the movable seat being connected to the top of the base via a linear guide rail, and a dynamic temperature-controlled pressing plate with an arc-shaped structure provided on the inner side of the movable seat, a hydraulic cylinder for driving the lateral displacement of the dynamic temperature-controlled pressing plate provided on the outer side of the movable seat, and a liquid passage provided inside the dynamic temperature-controlled pressing plate.
[0006] Preferably, a pressure sensor is fixed to the upper end of the outer wall of the dynamic temperature-controlled pressing plate, and the pressure sensor is electrically connected to the control system of the hydraulic cylinder through a wire.
[0007] Preferably, the upper and lower ends of the movable seat are both provided with guide shafts, and the upper and lower ends of the outer wall of the dynamic temperature control pressing plate are both provided with connecting rings that match the inner end structure of the guide shafts.
[0008] Preferably, the dynamic temperature-controlled pressing plate has vertical portions at both its upper and lower ends, and the vertical portions at both ends of the dynamic temperature-controlled pressing plate are respectively provided with liquid inlet and liquid outlet, which are connected to the liquid passage.
[0009] Preferably, the liquid passage is spirally distributed inside the dynamic temperature-controlled pressing plate, and the liquid passage includes multiple parallel rectangular flow channel sections and arc-shaped transition sections.
[0010] Preferably, the inner wall of the dynamic temperature-controlled pressing plate is also uniformly and detachably equipped with multiple electromagnetic induction heating elements, and the electromagnetic induction heating elements and the liquid passage are distributed in an alternating manner.
[0011] Compared with existing technologies, the beneficial effects of this invention are as follows: This high-temperature, high-speed extruder for ultra-fine fluoroplastic wires with a temperature control device can flexibly adjust the temperature control position according to actual temperature changes, improving the accuracy of temperature control and process adaptability, thereby enhancing product quality and production stability. The extruder's design, which uses a sliding seat along a linear guide rail and a hydraulic cylinder to drive a dynamic temperature-controlled pressing plate for lateral displacement, achieves dynamic adjustment of the temperature control area. Simultaneously, the liquid passage inside the dynamic temperature-controlled pressing plate allows for the introduction of heating or cooling media, enabling precise temperature control of localized areas of the extrusion barrel. This effectively avoids the problems of fluoroplastic material decomposition or uneven coating at high temperatures. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of a high-temperature and high-speed extruder for ultra-fine fluoroplastic wires with a temperature control device according to this utility model.
[0013] Figure 2 This is a side view of the high-temperature and high-speed extruder for ultra-fine fluoroplastic wires with a temperature control device according to this utility model.
[0014] Figure 3 This is a schematic diagram of the inner structure of the dynamic temperature-controlled pressing plate of a high-temperature and high-speed extruder for ultra-fine fluoroplastic wires with a temperature control device according to this utility model.
[0015] In the diagram: 1. Machine base; 2. Extrusion cylinder; 3. Moving seat; 4. Linear guide rail; 5. Dynamic temperature control pressing plate; 6. Hydraulic cylinder; 7. Guide shaft; 8. Pressure sensor; 9. Connecting ring; 10. Liquid passage; 11. Electromagnetic induction heating element. Detailed Implementation
[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0017] Please see Figure 1-3This utility model provides a technical solution: a high-temperature, high-speed extruder for ultrafine fluoroplastic wires with a temperature control device, comprising a base 1, a drive device and an extrusion cylinder 2 respectively mounted on the top of the base 1. The drive device is an existing AC servo motor drive system, used to drive the screw extrusion structure inside the extrusion cylinder 2 to rotate, providing stable and precise power output. A feeding mechanism with a hopper valve is mounted on one side of the top of the extrusion cylinder 2. Movable seats 3 are provided on both the front and rear sides of the extrusion cylinder 2. The bottom end of the movable seats 3 is connected to the top of the base 1 through a linear guide rail 4. The inner side of the movable seats 3 is provided with a dynamic temperature control pressing plate 5 with an arc-shaped structure. A hydraulic cylinder 6 for driving the lateral displacement of the dynamic temperature control pressing plate 5 is fixedly mounted on the outer side of the movable seats 3 by bolts. The specific model of the hydraulic cylinder 6 is MOOG. In D633-826B, the output end of the hydraulic cylinder 6 passes through the connection of the movable seat 3 and is fixedly connected to the middle of the outer wall of the dynamic temperature control pressing plate 5. The dynamic temperature control pressing plate 5 has a liquid passage 10 inside. This structure provides the base support for the machine base 1. The extrusion cylinder 2 performs wire extrusion under the drive of the drive device. When the temperature control area needs to be adjusted during extrusion, the movable seats 3 on both sides of the top of the machine base 1 slide laterally along the front and rear sides of the extrusion cylinder 2 via linear guide rails 4. When the movable seats 3 move the dynamic temperature control pressing plate 5 to the position requiring temperature control, the hydraulic cylinder 6 is activated, driving the dynamic temperature control pressing plate 5 through its output end for further lateral fine-tuning, making it closely fit or moderately move away from the surface of the extrusion cylinder 2, thereby achieving precise positioning and pressure control of the temperature control area. Meanwhile, the liquid passage 10 inside the dynamic temperature control pressing plate 5 is used to introduce heating or cooling media to adjust the local temperature of key areas in the extrusion process based on actual temperature feedback. Through the coordinated operation of the moving seat 3, linear guide 4, and hydraulic cylinder 6, the dynamic temperature control pressing plate 5 can flexibly adapt to temperature changes at different extrusion stages. This solves the problems of traditional fixed temperature control devices failing to respond to temperature fluctuations in real time and having low control accuracy. It effectively avoids defects such as decomposition of fluoroplastic materials and uneven coating thickness caused by local overheating, significantly improving the temperature control accuracy and production stability during the high-temperature, high-speed extrusion of ultra-fine fluoroplastic wires. A pressure sensor 8 is fixed to the upper end of the outer wall of the dynamic temperature control pressing plate 5. The specific model of the pressure sensor 8 can be Honeywell. The 26PC series, such as the 26PC FF-001K, features a pressure sensor 8 electrically connected to the control system of the hydraulic cylinder 6 via a wire. This pressure sensor 8 can monitor the contact pressure between the dynamic temperature-controlled pressing plate 5 and the extrusion barrel 2 in real time and transmit the pressure signal to the control system of the hydraulic cylinder 6 via the wire. This enables closed-loop control of the displacement of the dynamic temperature-controlled pressing plate 5 driven by the hydraulic cylinder 6. Specifically, when the pressure value deviates from the set range, the control system automatically adjusts the output force or displacement of the hydraulic cylinder 6 to maintain the pressure applied by the dynamic temperature-controlled pressing plate 5 to the surface of the extrusion barrel 2 within a reasonable range.To ensure a tight fit and efficient temperature conduction within the temperature-controlled area, guide shafts 7 penetrate both the upper and lower ends of the movable base 3. Connecting rings 9, matching the inner structure of the guide shafts 7, are welded and fixed to both the upper and lower ends of the outer wall of the dynamic temperature-controlled pressing plate 5. Locking bolts are threaded onto the connecting rings 9. This structure of the guide shafts 7 provides stable guidance for the lateral displacement of the dynamic temperature-controlled pressing plate 5, ensuring the straightness and accuracy of its movement path. Furthermore, the cooperation between the connecting rings 9 and the guide shafts 7 facilitates quick disassembly of the dynamic temperature-controlled pressing plate 5 during maintenance or replacement, thereby improving equipment maintenance efficiency and operational convenience. Vertical sections are provided at both the upper and lower ends of the dynamic temperature-controlled pressing plate 5. Furthermore, the vertical sections at the top and bottom of the dynamic temperature-controlled pressing plate 5 are respectively equipped with liquid inlets and outlets, which are interconnected with the liquid passage 10. The liquid inlet on the dynamic temperature-controlled pressing plate 5 can be connected to the output end of the heating or cooling medium in the external constant temperature circulation system via a hose connector, while the outlet is connected to the return end of the system to form a complete medium flow loop. Thus, when the equipment is running, the temperature-controlled medium enters the liquid passage 10 through the liquid inlet, flows evenly, and then returns through the outlet, achieving uniform temperature regulation of the entire dynamic temperature-controlled pressing plate 5. This precisely controls the temperature state of the area in contact with the extrusion cylinder 2, ensuring the stable plasticization and uniformity of the fluoroplastic material during high-temperature, high-speed extrusion. The liquid-passing channels 10 are spirally distributed inside the dynamic temperature-controlled pressing plate 5. Each channel includes multiple parallel rectangular flow sections and arc-shaped transition sections. The temperature-controlled medium enters through the inlet on the dynamic temperature-controlled pressing plate 5 and flows sequentially through each flow section along a spiral path. The rectangular flow sections achieve efficient heat exchange coverage, while the arc-shaped transition sections provide a smooth connection, reducing flow resistance and temperature gradient differences. This not only improves the uniformity of medium flow and heat transfer efficiency but also enhances the overall temperature control response speed and stability of the dynamic temperature-controlled pressing plate 5, ensuring precise and rapid temperature regulation of local areas of the extrusion cylinder 2. Multiple electromagnetic induction heating elements 11 are evenly and detachably installed on the inner wall of plate 5, and the electromagnetic induction heating elements 11 and the liquid passage 10 are distributed in an alternating manner. In this structure, after the electromagnetic induction heating elements 11 are energized, they rapidly heat the dynamic temperature-controlled pressing plate 5 locally through the principle of electromagnetic induction. The liquid passage 10 is used for circulating heating or cooling media. The two are spatially alternately distributed, do not interfere with each other, and work synergistically. This gives the dynamic temperature-controlled pressing plate 5 dual temperature control capabilities: rapid heating response through electromagnetic induction and precise temperature regulation and heat balance through the liquid medium. This significantly improves the flexibility, response speed, and control accuracy of the temperature control system.
[0018] Working Principle: When using this high-temperature, high-speed extruder for ultra-fine fluoroplastic wires with a temperature control device, the fluoroplastic raw material is first added to the feeding mechanism through the hopper valve installed on one side of the top of the extrusion cylinder 2. Then, the drive device rotates the screw extrusion structure inside the extrusion cylinder 2, causing the raw material to melt under high temperature and pressure and be conveyed forward. Simultaneously, the dynamic temperature-controlled pressing plate 5, according to the current extrusion process requirements, is slid from the moving seat 3 along the front and rear sides of the extrusion cylinder 2 via the linear guide rail 4 to the required position. It is then further finely adjusted laterally by the hydraulic cylinder 6 to fit the surface of the extrusion cylinder 2. After the dynamic temperature-controlled pressing plate 5 is adjusted into position, the heating or cooling medium of the external constant temperature circulation system enters sequentially from the inlet. The liquid enters through a spiral path composed of a rectangular flow channel section and an arc transition section in the liquid channel 10, and then flows back from the outlet, realizing real-time control of the temperature of the dynamic temperature-controlled pressing plate 5. At the same time, the electromagnetic induction heating element 11 is energized and operates to provide auxiliary heating to the dynamic temperature-controlled pressing plate 5 by electromagnetic induction. During the displacement adjustment of the dynamic temperature-controlled pressing plate 5, the guide shaft 7 passes through the upper and lower ends of the moving seat 3 and cooperates with the connecting ring 9. It is fixed by locking bolts to provide stable guidance for the dynamic temperature-controlled pressing plate 5. The pressure sensor 8 continuously detects the contact pressure between the dynamic temperature-controlled pressing plate 5 and the extrusion cylinder 2 and feeds the signal back to the control system of the hydraulic cylinder 6 to form a closed-loop control, thereby completing a series of operations.
[0019] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A high-temperature, high-speed extruder for ultrafine fluoroplastic wires with a temperature control device, comprising a base (1), wherein a drive device and an extrusion cylinder (2) are respectively provided on the top of the base (1), characterized in that: The extrusion cylinder (2) is provided with movable seats (3) on both the front and rear sides. The bottom end of the movable seat (3) is connected to the top of the machine base (1) through a linear guide rail (4). The inner side of the movable seat (3) is provided with a dynamic temperature control pressing plate (5) with an arc-shaped structure. The outer side of the movable seat (3) is provided with a hydraulic cylinder (6) that drives the dynamic temperature control pressing plate (5) to move laterally. The inside of the dynamic temperature control pressing plate (5) is provided with a liquid passage (10).
2. The high-temperature, high-speed extruder for ultrafine fluoroplastic wires with a temperature control device according to claim 1, characterized in that: A pressure sensor (8) is fixed at the upper end of the outer wall of the dynamic temperature control pressing plate (5), and the pressure sensor (8) is electrically connected to the control system of the hydraulic cylinder (6) through a wire.
3. The high-temperature, high-speed extruder for ultrafine fluoroplastic wires with a temperature control device according to claim 1, characterized in that: The upper and lower ends of the movable seat (3) are both provided with guide shafts (7), and the upper and lower ends of the outer wall of the dynamic temperature control pressing plate (5) are provided with connecting rings (9) that match the inner end structure of the guide shaft (7).
4. The high-temperature, high-speed extruder for ultrafine fluoroplastic wires with a temperature control device according to claim 1, characterized in that: The dynamic temperature control pressing plate (5) has vertical parts at both the top and bottom, and the vertical parts at both the top and bottom are respectively provided with liquid inlet and liquid outlet, which are connected to the liquid passage (10).
5. The high-temperature, high-speed extruder for ultrafine fluoroplastic wires with a temperature control device according to claim 1, characterized in that: The liquid passage (10) is spirally distributed inside the dynamic temperature control pressing plate (5). The liquid passage (10) includes multiple parallel rectangular flow channel sections and arc transition sections.
6. The high-temperature, high-speed extruder for ultrafine fluoroplastic wires with a temperature control device according to claim 1, characterized in that: The inner wall of the dynamic temperature control pressing plate (5) is also uniformly and detachably equipped with multiple electromagnetic induction heating elements (11), and the electromagnetic induction heating elements (11) and the liquid passage (10) are distributed in an alternating manner.