An extrusion device for cable production

Abstract

The utility model discloses an extruding device of cable production relates to cable manufacturing equipment technical field, including fixed bolster, the top fixed mounting of fixed bolster has the extruding machine body, the front side of extruding machine body is provided with extruding machine head mechanism, the right side of extruding machine head mechanism is provided with conductor positioning mechanism, extruding machine head mechanism includes extruding machine head, the output of extruding machine body is through to the inner chamber of extruding machine head, the left -hand end fixedly connected with female thread extruding pipe no.

Description

Technical Field

[0001] This utility model relates to the field of cable manufacturing equipment technology, and specifically to an extrusion device for cable production. Background Technology

[0002] In the manufacturing process of wires and cables, the extrusion process is a crucial step. Its main function is to uniformly and continuously coat molten thermoplastics such as polyethylene, polyvinyl chloride, and cross-linked polyethylene onto the outer layer of conductors or cable cores such as copper wires, aluminum wires, and optical fibers through an extruder head, forming an insulation layer or sheath layer to achieve purposes such as insulation, protection, and identification. It typically includes an extruder, extruder head, cooling water tank, traction device, and take-up device. The following problems exist with existing technologies:

[0003] To accommodate the production of cables of varying thicknesses, the extrusion die needs to be replaced. However, replacing the die in existing extrusion equipment typically requires disassembling multiple bolts and components, which is cumbersome, time-consuming, and increases production line downtime, impacting overall production efficiency. Furthermore, since conductors or cable cores such as copper wire, aluminum wire, and optical fiber vary in thickness, the extrusion die of existing equipment cannot ensure that the extrusion die is centered when passing through these conductors. This can lead to the extruded cable's copper wire, aluminum wire, optical fiber, and other conductors being misaligned from the center of the insulation layer, affecting cable quality. Utility Model Content

[0004] This invention provides an extrusion apparatus for cable production to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] An extrusion apparatus for cable production includes a fixed bracket. An extruder body is fixedly mounted on the top of the fixed bracket. An extruder head mechanism is located on the front side of the extruder body. A conductor positioning mechanism is located on the right side of the extruder head mechanism. The extruder head mechanism includes an extruder head. The output end of the extruder body extends into the inner cavity of the extruder head. An externally threaded extrusion tube is fixedly connected to the left end of the extruder head. An internally threaded ring is threaded onto the outer wall of the externally threaded extrusion tube. A tapered extrusion tube penetrating its inner ring is fixedly connected to the left end of the internally threaded ring. A threaded extrusion tube 2 is fixedly connected to the left end of extrusion tube 1. A limiting ring is fixedly installed on the outer wall of the threaded extrusion tube 2 near the side of the tapered extrusion tube 1. An internal threaded ring 2 is threadedly installed on the outer wall of the threaded extrusion tube 2. The right side of the internal threaded ring 2 fits against the left side of the limiting ring. A tapered extrusion tube 2 that penetrates its inner ring is fixedly connected to the left end of the internal threaded ring 2. An extrusion tube is fixedly connected to the left end of the tapered extrusion tube 2. The inner ring diameter of the threaded extrusion tube 1 is larger than the inner ring diameter of the threaded extrusion tube 2. The inner ring diameter of the threaded extrusion tube 2 is larger than the inner ring diameter of the extrusion tube.

[0007] A further improvement of the present invention is that the conductor positioning mechanism includes a fixing plate, a positioning box is fixedly installed at the front end of the fixing plate, and through holes are opened on both the front and rear sides of the positioning box to penetrate its inner cavity. The two through holes are connected front and rear. An inlet hole is opened on the side of the extruder head near the positioning box, and the two through holes are aligned left and right with the inlet hole.

[0008] A further improvement of this utility model is that a horizontal positioning mechanism is provided on the right side of the inner cavity of the positioning box, and a vertical positioning mechanism is provided on the left side of the inner cavity of the positioning box.

[0009] A further improvement of this utility model is that the horizontal positioning mechanism includes a positive and negative threaded rod and a limiting slide rod. The positive and negative threaded rod is located above the limiting slide rod. The rear end of the positive and negative threaded rod is movably connected to the rear side of the inner wall of the positioning box. A knob is fixedly installed on the left end of the positive and negative threaded rod. Threaded walls with opposite threads are respectively opened on the left and right sides of the outer wall of the positive and negative threaded rod. A movable plate is threadedly installed on the outer wall of each of the two threaded walls. A concave clamping rod is movably installed on the top of each of the two movable plates. The recessed surfaces of the two concave clamping rods are on the same horizontal line as the through hole.

[0010] A further improvement of this utility model is that the rear end of the limiting slide rod is fixedly installed on the rear side of the inner wall of the positioning box, and both of the moving plates are slidably connected to the limiting slide rod.

[0011] A further improvement of this utility model's technical solution is that: the vertical positioning mechanism includes two positive and negative threaded rods and two limiting slide rods. The limiting slide rod is located in front of the two positive and negative threaded rods. The bottom end of the two positive and negative threaded rods is movably connected to the bottom of the inner wall of the positioning box. The top end of the two positive and negative threaded rods extends through to the top of the positioning box and is fixedly installed with a knob. The upper and lower sides of the outer wall of the two positive and negative threaded rods are respectively provided with threaded walls with opposite threads. The outer walls of the two threaded walls are threaded with movable plates. The rear ends of the two movable plates are movably installed with concave clamping rods. The opposite surfaces of the concave parts of the two concave clamping rods are on the same horizontal line as the opposite surfaces of the concave parts of the two concave clamping rods.

[0012] A further improvement of this utility model is that the bottom end of the limiting slide rod two is fixedly installed on the bottom of the inner wall of the positioning box, and both of the moving plates two are slidably connected to the limiting slide rod two.

[0013] Due to the adoption of the above technical solution, the technological progress achieved by this utility model compared to the prior art is as follows:

[0014] 1. This utility model provides an extrusion device for cable production. Through the cooperation between the extruder head, the external threaded extrusion tube, the internal threaded ring, and the internal threaded ring, the thickness of the extruded cable can be quickly adjusted by using the combination of extruder heads of different diameters. It can adapt to cables produced in different batches without having to repeatedly change the extruder head mold, thus avoiding affecting the overall production efficiency.

[0015] 2. This utility model provides an extrusion device for cable production. Through the cooperation of the positioning box, through hole, horizontal positioning mechanism and vertical positioning mechanism, the conductor entering the extruder head can be centered by synchronous clamping and positioning in the upper, lower and left and right directions, so that the insulation layer is evenly wrapped on the outer wall of the conductor, thereby improving the quality of the extruded cable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the extruder head mechanism of this utility model.

[0018] Figure 3 This is a schematic diagram of the conductor positioning mechanism of the present invention.

[0019] Figure 4 This is a schematic diagram of the horizontal positioning mechanism of the present invention.

[0020] Figure 5 This is a schematic diagram of the vertical positioning mechanism of the present invention.

[0021] In the diagram: 1. Fixed bracket; 2. Extruder body; 3. Extruder head mechanism; 31. Extruder head; 32. External threaded extrusion tube one; 33. Internal threaded ring one; 34. Conical extrusion tube one; 35. External threaded extrusion tube two; 36. Limiting ring; 37. Internal threaded ring two; 38. Conical extrusion tube two; 39. Extrusion tube; 4. Conductor positioning mechanism; 41. Fixed plate; 42. Positioning box; 43. Through hole; 44. Horizontal positioning mechanism; 441. Positive and negative threaded rod one; 442. Knob one; 443. Moving plate one; 444. Concave clamping roller one; 445. Limiting slide rod one; 45. Vertical positioning mechanism; 451. Positive and negative threaded rod two; 452. Knob two; 453. Moving plate two; 454. Concave clamping roller two; 455. Limiting slide rod two. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand

[0023] Understood. The present invention will now be further described in conjunction with specific implementation methods.

[0024] like Figure 1 , Figure 2 As shown, this utility model provides an extrusion device for cable production, including a fixed bracket 1. An extruder body 2 is fixedly mounted on the top of the fixed bracket 1. An extruder head mechanism 3 is provided on the front side of the extruder body 2, and a conductor positioning mechanism 4 is provided on the right side of the extruder head mechanism 3. The extruder head mechanism 3 includes an extruder head 31. The output end of the extruder body 2 extends into the inner cavity of the extruder head 31. An externally threaded extrusion tube 32 is fixedly connected to the left end of the extruder head 31. An internally threaded ring 33 is threaded onto the outer wall of the externally threaded extrusion tube 32. A conical extrusion tube 34, penetrating the inner ring of the internally threaded ring 33, is fixedly connected to the left end of the internally threaded ring 33. The left end of the first tube 34 is fixedly connected to the second external threaded extrusion tube 35. The outer wall of the second external threaded extrusion tube 35 is fixedly installed on the side close to the first tapered extrusion tube 34. The outer wall of the second external threaded extrusion tube 35 is threaded with the second internal threaded ring 37. The right side of the second internal threaded ring 37 fits against the left side of the limit ring 36. The left end of the second internal threaded ring 37 is fixedly connected to the second tapered extrusion tube 38 that passes through its inner ring. The left end of the second tapered extrusion tube 38 is fixedly connected to the extrusion tube 39. The inner ring diameter of the first external threaded extrusion tube 32 is larger than the inner ring diameter of the second external threaded extrusion tube 35. The inner ring diameter of the second external threaded extrusion tube 35 is larger than the inner ring diameter of the extrusion tube 39.

[0025] During use, plastic granules are heated by the extruder body 2 and injected into the inner cavity of the extruder head 31. Simultaneously, the conductor passes through the extruder head 31 and is pulled out from the external threaded extrusion tube 32. At the same time, the insulation layer is extruded and wrapped around the outer wall of the conductor and pulled out together. In the initial state, the cable is extruded from the inner ring of the external threaded extrusion tube 32 at its maximum diameter. When it is necessary to reduce the cable diameter, simply align the inner ring of the internal threaded ring 33 with the external threaded extrusion tube 32 and rotate and tighten it to extrude the insulation layer from the conical extrusion tube 34 and the external threaded extrusion tube 35, thereby reducing the cable diameter. At the same time, when it is necessary to further reduce the cable diameter, simply align the inner ring of the internal threaded ring 37 with the external threaded extrusion tube 35 and rotate and tighten it until it touches the limiting ring 36, thereby extruding the insulation layer from the conical extrusion tube 38 and the extrusion tube 39, thereby reducing the cable diameter again. Each time the cable diameter is changed, it is a different batch of cable, so it is necessary to re-thread and install it. This does not affect the disassembly and assembly of the internal threaded ring 33 and the extrusion tube 39.

[0026] like Figure 3 As shown, the conductor positioning mechanism 4 includes a fixing plate 41, a positioning box 42 is fixedly installed at the front end of the fixing plate 41, and through holes 43 are opened on both the front and rear sides of the positioning box 42 to penetrate its inner cavity. The two through holes 43 are connected from front to back. The extruder head 31 has a wire inlet hole on the side near the positioning box 42. The two through holes 43 are aligned with the wire inlet hole on the left and right. A horizontal positioning mechanism 44 is provided on the right side of the inner cavity of the positioning box 42, and a vertical positioning mechanism 45 is provided on the left side of the inner cavity of the positioning box 42.

[0027] Before entering the extruder head 31, the conductor can first pass through the through hole 43 on the right side of the positioning box 42 to enter its inner cavity, then pass through the horizontal positioning mechanism 44 and the vertical positioning mechanism 45, and then pass through the through hole 43 on the left side, and enter the inlet hole of the extruder head 31.

[0028] like Figure 4 , Figure 5As shown, the horizontal positioning mechanism 44 includes a positive and negative threaded rod 441 and a limiting slide rod 445. The positive and negative threaded rod 441 is located above the limiting slide rod 445. The rear end of the positive and negative threaded rod 441 is movably connected to the rear side of the inner wall of the positioning box 42. A knob 442 is fixedly installed on the left end of the positive and negative threaded rod 441. The left and right sides of the outer wall of the positive and negative threaded rod 441 are respectively provided with threaded walls with opposite threads. The outer walls of the two threaded walls are threaded with movable plates 443. The tops of the two movable plates 443 are movably installed with concave clamping rods 444. The opposite surfaces of the concave parts of the two concave clamping rods 444 are on the same horizontal line as the through hole 43. The rear end of the limiting slide rod 445 is fixedly installed on the rear side of the inner wall of the positioning box 42. The two movable plates 443 are slidably connected to the limiting slide rod 445. The vertical positioning mechanism 45 includes a positive and negative threaded rod 441. The reverse threaded rod 451 and the limiting slide rod 455 are located in front of the reverse threaded rod 451. The bottom end of the reverse threaded rod 451 is movably connected to the bottom of the inner wall of the positioning box 42. The top end of the reverse threaded rod 451 extends to the top of the positioning box 42 and is fixedly installed with a knob 452. The upper and lower sides of the outer wall of the reverse threaded rod 451 are respectively provided with threaded walls 2 with opposite threads. The outer walls of the two threaded walls 2 are threaded with movable plates 453. The rear ends of the two movable plates 453 are movably installed with concave clamping rods 454. The opposite surfaces of the concave parts of the two concave clamping rods 454 are on the same horizontal line as the opposite surfaces of the concave parts of the two concave clamping rods 444. The bottom end of the limiting slide rod 455 is fixedly installed at the bottom of the inner wall of the positioning box 42. The two movable plates 453 are slidably connected to the limiting slide rod 455.

[0029] When the conductor passes through the horizontal positioning mechanism 44 and the vertical positioning mechanism 45, the first rotation of the knob 442 drives the positive and negative threaded rod 441 to rotate. The opposing threads on the left and right sides of the outer wall of the positive and negative threaded rod 441 are connected to the threads of the two moving plates 443, thus controlling the two concave clamping rods 444 to move closer together. The concave areas of these rods allow for left and right clamping of conductors of different thicknesses. The moving plate 443 remains stable during movement due to its sliding connection with the limiting slide rod 445. The concave clamping rods 444, which are movably mounted on the top of the moving plate 443, do not affect the movement of the conductor. Simultaneously, the second rotation of the knob 452 drives the positive and negative threaded rod 451 to rotate, utilizing the positive and negative threaded rods... The threads on the upper and lower sides of the outer wall of 451 are oppositely threaded and connected to the threads of the two movable plates 453. This allows the two movable plates 453 to move the two concave clamping rollers 454 closer together, using their recesses to clamp the upper and lower sides of the conductor. The sliding connection between the movable plates 453 and the limiting slide rod 455 maintains the stability of the movement of the movable plates 453. The concave clamping rollers 454, which are movably installed on the rear side of the movable plates 453, do not affect the movement of the conductor. The upper and lower clamping movable plates 453, together with the left and right clamping movable plates 443, can achieve the centering and positioning of conductors of different thicknesses, keeping them in the center position as they pass through the extruder head 31 to receive the insulation layer, thus improving the quality of the extruded cable.

[0030] The working principle of the extrusion device for cable production will be explained in detail below.

[0031] like Figure 1-5As shown, during use, plastic granules are heated by the extruder body 2 and injected into the inner cavity of the extruder head 31. Simultaneously, the conductor passes through the extruder head 31 and is pulled out from the external threaded extrusion tube 32. At the same time, the insulation layer is extruded and wrapped around the outer wall of the conductor and pulled out together. Initially, the cable is extruded from the inner ring of the external threaded extrusion tube 32 at its maximum diameter. When it is necessary to reduce the cable diameter, simply align the inner ring of the internal threaded ring 33 with the inner ring of the external threaded extrusion tube 32 and rotate and tighten it. This will cause the insulation layer to be extruded from the conical extrusion tube 34 and the external threaded extrusion tube 35, thereby reducing the cable diameter. Similarly, when it is necessary to further reduce the cable diameter, simply align the inner ring of the internal threaded ring 37 with the inner ring of the external threaded extrusion tube 35. The second tapered extrusion tube 35 is rotated and tightened until it abuts against the limiting ring 36, allowing the insulation layer to be extruded from the second tapered extrusion tube 38 and the extrusion tube 39, thereby reducing the cable diameter again. Since each change in cable diameter involves a different batch of cables, rewiring and installation are required. This does not affect the disassembly and assembly of the inner threaded ring 33 and the extrusion tube 39. Before entering the extruder head 31, the conductor can first pass through the through hole 43 on the right side of the positioning box 42 into its inner cavity, then through the horizontal positioning mechanism 44 and the vertical positioning mechanism 45, and then through the through hole 43 on the left side, entering the inlet hole of the extruder head 31. When the conductor passes through the horizontal positioning mechanism 44 and the vertical positioning mechanism 45, it first rotates... Rotating knob 442 drives the positive and negative threaded rod 441 to rotate. The opposing threads on the left and right sides of the outer wall of the positive and negative threaded rod 441 connect with the threads of the two moving plates 443, controlling the two concave clamping rollers 444 to move closer together. Their recesses allow for left and right clamping of conductors of different thicknesses. The moving plate 443 remains stable during movement via a sliding connection with the limiting slide rod 445, and the concave clamping rollers 444, movably mounted on top of the moving plate 443, do not affect the movement of the conductor. Simultaneously, rotating knob 452 drives the positive and negative threaded rod 451 to rotate, utilizing the opposing threads on the upper and lower sides of the outer wall of the positive and negative threaded rod 451... The threaded connection between the threaded wall 2 and the two movable plates 2 453 allows control of the upper and lower movable plates 2 453 to drive the two concave clamping rollers 2 454 to move closer together. The concave parts of the rollers clamp the upper and lower sides of the conductor. The sliding connection between the movable plates 2 453 and the limiting slide rod 2 455 maintains the stability of the movement of the movable plates 2 453. The concave clamping rollers 2 454, which are movably installed on the rear side of the movable plates 2 453, do not affect the movement of the conductor. The upper and lower clamping movable plates 2 453, together with the left and right clamping movable plates 1 443, can achieve the centering and positioning of conductors of different thicknesses, so that they are kept in the center position and pass through the extruder head 31 to receive the insulation layer, thereby improving the quality of the extruded cable.

[0032] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims

1. An extrusion apparatus for cable production, comprising a fixed support (1), characterized in that: The top of the fixed bracket (1) is fixedly installed with an extruder body (2). An extruder head mechanism (3) is provided on the front side of the extruder body (2). A conductor positioning mechanism (4) is provided on the right side of the extruder head mechanism (3). The extruder head mechanism (3) includes an extruder head (31). The output end of the extruder body (2) extends into the inner cavity of the extruder head (31). An external threaded extrusion tube (32) is fixedly connected to the left end of the extruder head (31). An internal threaded ring (33) is installed on the outer wall of the external threaded extrusion tube (32). A tapered extrusion tube (34) penetrating its inner ring is fixedly connected to the left end of the internal threaded ring (33). A tapered extrusion tube (34) penetrating its inner ring is fixedly connected to the left end of the tapered extrusion tube (34). External threaded extrusion tube two (35), a limiting ring (36) is fixedly installed on the outer wall of the external threaded extrusion tube two (35) near the side of the tapered extrusion tube one (34), an internal threaded ring two (37) is threaded on the outer wall of the external threaded extrusion tube two (35), the right side of the internal threaded ring two (37) is in contact with the left side of the limiting ring (36), a tapered extrusion tube two (38) that passes through its inner ring is fixedly connected to the left end of the internal threaded ring two (37), an extrusion tube (39) is fixedly connected to the left end of the tapered extrusion tube two (38), the inner ring diameter of the external threaded extrusion tube one (32) is larger than the inner ring diameter of the external threaded extrusion tube two (35), and the inner ring diameter of the external threaded extrusion tube two (35) is larger than the inner ring diameter of the extrusion tube (39).

2. The extrusion apparatus for cable production according to claim 1, characterized in that: The conductor positioning mechanism (4) includes a fixing plate (41), and a positioning box (42) is fixedly installed at the front end of the fixing plate (41). The positioning box (42) has through holes (43) on both the front and rear sides, and the two through holes (43) are connected from front to back. The extruder head (31) has a wire inlet hole on the side near the positioning box (42), and the two through holes (43) are aligned with the wire inlet hole on the left and right.

3. The extrusion apparatus for cable production according to claim 2, characterized in that: A horizontal positioning mechanism (44) is provided on the right side of the inner cavity of the positioning box (42), and a vertical positioning mechanism (45) is provided on the left side of the inner cavity of the positioning box (42).

4. The extrusion apparatus for cable production according to claim 3, characterized in that: The horizontal positioning mechanism (44) includes a positive and negative threaded rod (441) and a limiting slide rod (445). The positive and negative threaded rod (441) is located above the limiting slide rod (445). The rear end of the positive and negative threaded rod (441) is movably connected to the rear side of the inner wall of the positioning box (42). A knob (442) is fixedly installed on the left end of the positive and negative threaded rod (441). The left and right sides of the outer wall of the positive and negative threaded rod (441) are respectively provided with threaded walls with opposite threads. The outer walls of the two threaded walls are threaded with movable plates (443). The tops of the two movable plates (443) are movably installed with concave clamping rods (444). The recessed surfaces of the two concave clamping rods (444) are on the same horizontal line as the through hole (43).

5. An extrusion apparatus for cable production according to claim 4, characterized in that: The rear end of the limiting slide bar (445) is fixedly installed on the rear side of the inner wall of the positioning box (42), and both moving plates (443) are slidably connected to the limiting slide bar (445).

6. The extrusion apparatus for cable production according to claim 4, characterized in that: The vertical positioning mechanism (45) includes a positive and negative threaded rod two (451) and a limiting slide rod two (455). The limiting slide rod two (455) is located in front of the positive and negative threaded rod two (451). The bottom end of the positive and negative threaded rod two (451) is movably connected to the bottom of the inner wall of the positioning box (42). The top end of the positive and negative threaded rod two (451) extends through to the top of the positioning box (42) and is fixedly installed with a knob two (452). The upper and lower sides of the outer wall of the positive and negative threaded rod two (451) are respectively provided with threaded walls two with opposite threads. The outer walls of the two threaded walls two are threaded with movable plates two (453). The rear ends of the two movable plates two (453) are movably installed with concave clamping rods two (454). The opposite surfaces of the concave parts of the two concave clamping rods two (454) are on the same horizontal line as the opposite surfaces of the concave parts of the two concave clamping rods one (444).

7. An extrusion apparatus for cable production according to claim 6, characterized in that: The bottom end of the limiting slide bar 2 (455) is fixedly installed on the bottom of the inner wall of the positioning box (42), and the two moving plates 2 (453) are slidably connected to the limiting slide bar 2 (455).

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