High-speed precision extrusion system for teflon screen wire

Abstract

This utility model discloses a high-speed precision extrusion molding system for Teflon mesh, belonging to the field of mesh processing technology. The system includes an operating table, an extrusion shell, a wire feeding mechanism, a wire take-up mechanism, and a cooling mechanism. The cooling mechanism includes a water tank, a water pump, a water distribution block, and a flow ramp. The water distribution block is slidably connected to the inner wall of the flow ramp, uniformly spraying coolant onto the upper end of the flow ramp to cool the mesh. The wire feeding mechanism includes a support plate, which is connected to the operating table via a connecting block. Its front and rear sides are equipped with locking blocks that slide on the inner wall of a sliding frame, and the locking blocks are connected to the support plate via springs. This utility model, through its flow ramp cooling structure and spring-buffered wire feeding structure, effectively solves the problems of uneven cooling and wire feeding vibration in existing technologies, achieving rapid and uniform cooling and stable feeding, significantly improving finished product quality and production precision.

Description

Technical Field

[0001] This utility model relates to the field of wire mesh processing technology, and in particular to a high-speed precision extrusion molding system for Teflon wire mesh. Background Technology

[0002] Teflon, or polytetrafluoroethylene (PTFE), is widely used as the insulating coating layer for high-performance network cables due to its excellent high-temperature resistance, corrosion resistance, and electrical insulation properties. Its production is mainly achieved through extrusion molding, which involves continuously coating molten Teflon material onto the cable core wire and then cooling and shaping it into the finished product.

[0003] In pursuit of production efficiency, high-speed extrusion molding has become the mainstream direction of industry development. However, the increase in production speed has placed more stringent requirements on process equipment. When the wire passes through the extruder head at extremely high speed, the Teflon coating on its surface is still in a high-temperature molten state. It must be cooled rapidly and uniformly in a very short time to ensure the stability of its physical properties and geometric dimensions. Existing cooling methods, such as simple immersion water tanks or spray devices, often cannot provide sufficient uniform cooling intensity under high-speed conditions. This can easily lead to problems such as defects on the surface of the cable, uneven dimensions, or incomplete shaping, which directly affect the final quality of the product.

[0004] In addition, precision forming is another key indicator for measuring cable quality. It requires that the thickness of the sheathing layer be highly consistent and that the concentricity be good. To achieve this, the wire as the base material must be fed into the extruder with constant tension and speed. In actual production, the wire reel on the wire feeding device has a large moment of rotational inertia. When the equipment starts, stops, or changes speed, it is very easy to generate tension fluctuations or even vibrations. This unstable feeding state will be directly transmitted to the extrusion molding area, resulting in uneven wire diameter in the final product, which cannot meet the requirements of precision production. Especially under high-speed production conditions, this tension fluctuation problem caused by inertia will become more prominent.

[0005] Therefore, this utility model proposes a high-speed precision extrusion molding system for Teflon mesh to overcome the shortcomings of the prior art. Utility Model Content

[0006] In view of the problems of uneven cooling leading to poor shaping effect and unstable wire feeding caused by wire feeding vibration in the existing high-speed precision extrusion molding system for Teflon mesh, this utility model aims to provide a high-speed precision extrusion molding system for Teflon mesh with an improved structure that can effectively solve the above problems.

[0007] This utility model provides a high-speed precision extrusion molding system for Teflon mesh cables, including: an operating table, an extrusion shell, a wire feeding mechanism, a wire take-up mechanism, and a cooling mechanism.

[0008] The cooling mechanism includes a water tank, a water pump, a water delivery pipe, a water distribution block, and a water flow slope. The water distribution block is slidably connected to the inner wall of the water flow slope and is used to receive the coolant delivered by the water pump through the water delivery pipe and to spray the coolant evenly onto the upper end of the inner wall of the water flow slope.

[0009] Furthermore, the tray of the wire feeding mechanism is connected to the operating table via a connecting block. The front and rear sides of the tray are provided with locking blocks that slide on the inner wall of the slide frame, and the locking blocks are connected to the tray via springs.

[0010] Preferably, the wire feeding mechanism includes a wire carrier housing, a bearing, and a limiting rod. The wire carrier housing and the bearing are fitted onto the limiting rod, and the limiting rod is fixed to the top surface of the support plate.

[0011] Preferably, the tray is supported by a support plate below it; the engaging block engages with an engaging plate, which is connected to the connecting block.

[0012] Preferably, the cooling mechanism further includes a baffle plate and a channel, wherein the baffle plate is disposed below the flow slope to guide the flowing coolant back into the water tank from the channel.

[0013] Preferably, the water pump is connected to the water delivery pipe via a double-ball valve.

[0014] Preferably, the take-up mechanism includes a second wire carrier shell, a second bearing, and a second limiting rod. The second wire carrier shell is sleeved on the outer wall of the second limiting rod, and the second bearing is disposed below the second wire carrier shell to support its rotation.

[0015] Preferably, the system further includes a take-up frame through which the unprocessed wire enters the extrusion shell.

[0016] Preferably, the operating table is supported by multiple support columns.

[0017] This utility model has the following beneficial effects: 1. This utility model, by setting up a circulating cooling mechanism composed of a water tank, water pump, water distribution block and water flow slope, forms a uniform cooling water film on the water flow slope, which solves the problem of poor surface quality and poor shaping effect of Teflon mesh due to uneven and slow cooling in the prior art. It achieves the technical effect of rapid, uniform and efficient cooling of mesh formed by high-speed extrusion, and significantly improves the quality of the finished product.

[0018] 2. This utility model solves the problem in the prior art of unstable wire feeding tension caused by vibration of the wire feeding reel during start-up, stop or speed change, which affects the extrusion coating accuracy, by adding a limiting buffer device consisting of a sliding frame, a locking block and a spring to the support plate of the wire feeding mechanism. It achieves the technical effect of effectively absorbing impact and stabilizing the wire feeding process, and provides a reliable guarantee for achieving precision molding.

[0019] 3. This utility model organically combines a high-efficiency flow slope cooling mechanism with a stable spring buffer wire feeding mechanism and integrates them on an integrated operating table. This solves the problems of dispersed structure and poor coordination of existing equipment, and achieves the technical effect of compact and reasonable overall structure, stable operation, and simultaneous guarantee of high-speed production and precision molding requirements. It has strong practicality. Attached Figure Description

[0020] Figure 1 This is a front perspective view of a high-speed precision extrusion molding system for Teflon mesh cables proposed in this utility model; Figure 2 This is a partial structural breakdown diagram of a water tank for a high-speed precision extrusion molding system for Teflon mesh cables proposed in this utility model. Figure 3 This is a partial structural exploded view of the connecting block of a high-speed precision extrusion molding system for Teflon wire mesh proposed in this utility model; Figure 4 This is a partial structural exploded view of the spring in a high-speed precision extrusion molding system for Teflon mesh cables proposed in this utility model.

[0021] Legend: 1. Operating platform; 2. Cooling mechanism; 201. Water tank; 202. Water supply pipe; 203. Water distribution block; 204. Water flow slope; 205. Water baffle; 206. Through groove; 207. Water pump; 208. Double ball; 3. Connecting block; 4. Support plate; 5. Support plate; 6. Bearing 1; 7. Limiting rod 1; 8. Wire carrier shell 1; 9. Sliding frame; 10. Locking block; 11. Locking plate; 12. Spring; 13. Wire take-up frame; 14. Extrusion shell; 15. Support column; 16. Limiting rod 2; 17. Bearing 2; 18. Wire carrier shell 2. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0023] Example: Please refer to Figures 1 to 4 This utility model provides a high-speed precision extrusion molding system for Teflon mesh cables, which aims to solve the problems of uneven cooling leading to poor shaping effect and unstable wire feeding caused by wire feeding vibration during the extrusion molding of Teflon mesh cables in the prior art. Figure 1 and Figure 2 As shown, the system includes an operating platform 1 supported by multiple support columns 15. The operating platform 1 is equipped with an extrusion shell 14, a wire feeding mechanism, a wire take-up mechanism, and a cooling mechanism 2. The wire feeding mechanism is located on one side of the extrusion shell 14 for feeding, and the wire take-up mechanism is located on the other side of the extrusion shell 14 for winding. The cooling mechanism 2 is located between the extrusion shell 14 and the wire take-up mechanism for cooling the extruded wire. The support plate 5 of the wire feeding mechanism is connected to the operating platform 1 through a connecting block 3, and the support plate 5 is supported by the support plate 4 below it. The water tank 201 of the cooling mechanism 2 is installed on the bottom surface of the operating platform 1, which together form the basic framework of the entire extrusion molding system.

[0024] To solve the above-mentioned technical problems, the technical solution of this embodiment is that the high-speed precision extrusion molding system for Teflon mesh also includes a cooling mechanism 2, and the cooling mechanism 2 and the operating table 1 form a specific structural fit and connection relationship. Please refer to the following for details. Figure 1 and Figure 2 The core structure is described in detail below: The cooling mechanism 2 includes a water tank 201, a water pump 207, a water supply pipe 202, a water distribution block 203, a water flow slope 204, a baffle plate 205, and a through channel 206. The water tank 201 is installed on the bottom surface of the operating platform 1. The water pump 207 is connected to the water supply pipe 202 through a double ball 208 and delivers the coolant in the water tank 201 to the water distribution block 203. The water distribution block 203 is slidably connected to the inner wall of the water flow slope 204, and its function is to evenly spray the coolant onto the upper end of the inner wall of the water flow slope 204. This water flow slope surface cooling structure ensures that the mesh is evenly cooled when it slides over it, and the liquid flowing down is guided by the baffle plate 205 and flows back into the water tank 201 from the through channel 206 to complete the circulation.

[0025] Based on the above embodiments, the present invention may further include the following preferred technical solutions: Specifically, the wire feeding mechanism includes a wire carrier shell 8, a bearing 6, and a limiting rod 7. The wire carrier shell 8 and the bearing 6 are sleeved on the limiting rod 7, and the limiting rod 7 is fixed to the top surface of the support plate 5. The bearing 6 is used to assist the rotation of the wire carrier shell 8. Further, the locking block 10 locks the locking plate 11, and the locking plate 11 is fixedly connected to the connecting block 3. The wire take-up mechanism includes a second wire carrier shell 18, a second bearing 17, and a second limiting rod 16. The second wire carrier shell 18 is sleeved on the outer wall of the second limiting rod 16, and the second bearing 17 is located below the second wire carrier shell 18 to support its rotation. In addition, the system also includes a take-up frame 13, through which the unprocessed wire enters the extrusion shell 14.

[0026] Working principle: An extrusion shell 14 is installed on an operating table 1 supported by multiple support columns 15. The tray 5 connected to the left side of the operating table 1 by the connecting block 3 is supported by the lower support plate 4. The locking blocks 10 on the front and rear sides of the tray 5 slide on the inner wall of the slide frame 9 and are connected to the tray 5 by the spring 12. The locking plate 11 locked by the locking block 10 is connected to the connecting block 3, which promotes the limiting of the connecting block 3 and the tray 5. The top surface of the tray 5 has a bearing 6 and a wire carrier shell 8 sleeved on the limiting rod 7. The bearing 6 promotes the rotation of the wire carrier shell 8. The wire without Teflon wrapping is wound on the outer wall of the wire carrier shell 8 and passed into the extrusion shell 14 for processing through the take-up frame 13. After being output from the left side of the extrusion shell 14, it passes through the cooling mechanism 2 and then winds around the wire carrier shell 18 sleeved on the outer wall of the limiting rod 16. The bottom bearing 17 promotes the rotation of the wire carrier shell 18. A water tank 201 is installed on the bottom of the operating table 1. The water tank 201 uses a water pump 207 to deliver coolant through a water delivery pipe 202 connected to a double ball 208 to the water distribution block 203. The water distribution block 203 is slidably connected to the inner wall of the flow slope 204, and the delivered coolant is evenly sprayed out from the upper end of the inner wall of the flow slope 204. When the processed wire sheath slides on the flow slope 204, it is cooled by the coolant and wraps around the rear wire carrier shell 18. The flowing liquid is blocked by the flow baffle 205 and flows back into the water tank 201 from the through groove 206 to complete the circulation.

Claims

1. A high-speed precision extrusion molding system for Teflon mesh, comprising, an operating table (1); The extrusion shell (14) is set on the operating table (1). A wire feeding mechanism disposed on one side of the extrusion shell (14) for feeding the extrusion shell (14); A take-up mechanism located on the other side of the extrusion shell (14) for winding up the wire produced from the extrusion shell (14); And a cooling mechanism (2) disposed between the extrusion shell (14) and the take-up mechanism; Its features are, The cooling mechanism (2) includes a water tank (201), a water pump (207) connected to the water tank (201), a water delivery pipe (202), a water distribution block (203), and a water flow slope (204). The water distribution block (203) is slidably connected to the inner wall of the water flow slope (204) to receive the coolant delivered by the water pump (207) through the water delivery pipe (202) and to spray the coolant evenly onto the upper end of the inner wall of the water flow slope (204) to cool the mesh wires sliding over it. The wire feeding mechanism includes a tray (5), which is connected to the operating table (1) via a connecting block (3). The front and rear sides of the tray (5) are provided with locking blocks (10) that slide on the inner wall of the slide frame (9). The locking blocks (10) are connected to the tray (5) via a spring (12).

2. The high-speed precision extrusion molding system for Teflon mesh cables according to claim 1, characterized in that, The wire feeding mechanism includes a wire carrier shell (8), a bearing (6), and a limiting rod (7). The wire carrier shell (8) and the bearing (6) are sleeved on the limiting rod (7), and the limiting rod (7) is fixed to the top surface of the tray (5).

3. The high-speed precision extrusion molding system for Teflon mesh cables according to claim 2, characterized in that, The tray (5) is supported by the support plate (4) below it; The locking block (10) engages with the locking plate (11), and the locking plate (11) is connected to the connecting block (3).

4. The high-speed precision extrusion molding system for Teflon mesh cables according to claim 1, characterized in that, The cooling mechanism (2) also includes a baffle plate (205) and a channel (206). The baffle plate (205) is located below the flow slope (204) and is used to guide the coolant flowing down from the channel (206) back into the water tank (201).

5. The high-speed precision extrusion molding system for Teflon mesh cables according to claim 4, characterized in that, The water pump (207) is connected to the water delivery pipe (202) via a double ball (208).

6. The high-speed precision extrusion molding system for Teflon mesh cables according to claim 1, characterized in that, The take-up mechanism includes a second wire carrier shell (18), a second bearing (17), and a second limiting rod (16). The second wire carrier shell (18) is sleeved on the outer wall of the second limiting rod (16), and the second bearing (17) is located below the second wire carrier shell (18) to support its rotation.

7. The high-speed precision extrusion molding system for Teflon mesh cables according to claim 1, characterized in that, The system also includes a take-up frame (13) through which the unprocessed wire enters the extrusion shell (14).

8. The high-speed precision extrusion molding system for Teflon mesh cables according to claim 1, characterized in that, The operating table (1) is supported by multiple support columns (15).

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