A polyethylene cable core stranding device

Abstract

This application relates to the technical field of cable core stranding equipment, and discloses a polyethylene cable core stranding device to solve the problem of loosening due to insufficient clamping force caused by excessive wear of the cable core in the clamping and guiding device. When the stranded cable core passes through multiple guide rollers, the stranded cable core rolls against the guide rollers, thereby reducing the friction between the stranded cable core and the clamping and guiding device, reducing wear on the clamping and guiding device, and extending its service life. As the guide rollers and sliding sleeves rotate, the driving shaft reciprocates axially, causing the rotating shaft to move the extrusion block synchronously. This forces the gas in the square cylinder through the connecting pipe into the cylinder body, causing the gas in the cylinder body to push the sliding block and guide rollers towards the cable core, thereby compensating for the wear of the guide rollers and ensuring the clamping of the cable core by the guide holes formed by the multiple guide rollers, preventing loosening due to reduced clamping force caused by wear of the multiple guide rollers.

Description

Technical Field

[0001] This application relates to the field of cable core stranding equipment, and more particularly to a polyethylene cable core stranding equipment. Background Technology

[0002] Cable cores are a key component of common types of cables such as power cables and communication cables. Their design and manufacturing directly affect the electrical performance, mechanical strength and environmental adaptability of the cable. In the manufacturing of polyethylene cable cores, multiple cores are usually twisted into a cable by a stranding device, and then a polyethylene film is wrapped around the outer layer of the cable.

[0003] Cable core stranding equipment generally includes a stabilizing seat, a power mechanism, a rotating disk, and a clamping and guiding device. The coiled cable core is mounted on the rotating disk, which drives the coiled cable core to rotate. One end of the cable core passes through the guiding die and the clamping and guiding device. Under the action of the traction mechanism, the coiled cable core is pulled out and wound up. However, after the cable core has been passed through the clamping and guiding device for a long time, severe sliding friction occurs between the stranded cable core and the clamping and guiding device. This causes the diameter of the guiding hole in the middle of the clamping and guiding device to become larger, which means that the stranded cable core cannot be pressed by the guiding hole of the clamping and guiding device, resulting in the cable core becoming loose. Summary of the Invention

[0004] This application proposes a polyethylene cable core stranding device, which has the advantages of reducing wear between the cable core and the clamping device and automatically compensating for wear on the clamping device, in order to solve the problem of loosening of the cable core due to excessive wear of the clamping device by the cable core.

[0005] To achieve the above objectives, this application adopts the following technical solution: a polyethylene cable core stranding device, comprising a stabilizing base, a power mechanism, a rotating disk, a clamping and guiding device, and a control box. The clamping and guiding device includes a bracket and a guiding mechanism. The bracket is fixedly installed on the stabilizing base, and a plurality of guiding mechanisms are fixedly installed on the bracket. The guiding mechanism includes: a cylinder, fixedly installed on the inner wall of the bracket; a sliding block, one end of which is slidably sealed and installed in the cylinder, and the other end being n-shaped and extending out of the cylinder, the upper end of the cylinder being filled with high-pressure gas; a sliding sleeve, penetrating one end of the n-shaped sliding block; and a guiding wheel, fixedly sleeved on the sliding sleeve and located in the middle of the n-shaped position of the sliding block, with a plurality of guiding wheels surrounding a guiding hole.

[0006] Furthermore, a rotating shaft passes through the center of the sliding sleeve, and a reciprocating spiral groove is formed on the rotating shaft. A guide block is fixedly installed on the inner wall of the sliding sleeve, and the guide block is slidably installed in the reciprocating spiral groove of the rotating shaft. Compensation mechanisms for compensating the wear of the thread guide wheel are provided at both ends of the rotating shaft. The compensation mechanism includes: a square tube, fixedly installed on both sides of the sliding block; a pressing block, fixedly sleeved on both ends of the rotating shaft and slidably sealed inside the square tube; a connecting pipe connected to the end of the square tube through a one-way valve; the other end of the connecting pipe connected to the cylinder body; a connecting ring provided inside the bracket for connecting several cylinder bodies; an air supply valve, fixedly installed on the side wall of the square tube; and a pressure relief valve connected to the cylinder body.

[0007] Furthermore, the flow direction of the one-way valve on the connecting pipe is from inside the square tube to inside the cylinder, the flow direction of the air supply valve is from outside to inside the square tube, and the flow direction of the pressure relief valve connected to the cylinder is from inside the cylinder to outside.

[0008] Furthermore, a pair of detection mechanisms are fixedly installed on the side of the bracket away from the rotating disk. The detection mechanism includes: a fixing plate, which is fixedly installed on the side wall of the bracket; a support spring, one end of which is fixedly connected to the opposite side of the fixing plate; and a collateral frame, which is fixedly connected to the other end of the support spring. Arc-shaped grooves are opened on the opposite surfaces of the two collateral frames, and the arc-shaped grooves on the two collateral frames form a detection hole. The diameter of the detection hole is equal to the diameter of the qualified cable core after stranding.

[0009] Furthermore, a stabilizing bar is fixedly connected to the top of the mortgage frame near the support, and the stabilizing bar abuts against the cylinder.

[0010] Furthermore, the cylinder body closely attached to the detection mechanism is provided with an adjustment mechanism for regulating the air pressure inside the cylinder. The adjustment mechanism includes: two outer sliding plates, fixedly installed on the side wall of the cylinder body; a movable block, slidably installed between the two outer sliding plates, with several pressure relief valves evenly installed on the movable block, the pressure relief valves farther from the axis of the compression wire passing device having smaller pressure relief; and a power plate, fixedly connected to one end of the stabilizing bar near the cylinder body, the power plate closely attached to the movable block, an elastic block fixedly connected to the side of the power plate away from the movable block, and the other side of the elastic block closely attached to the outer sliding plates.

[0011] Furthermore, a wedge-shaped groove is provided on the surface of the power plate that abuts against the moving block, and the wedge-shaped groove on the power plate and the wedge-shaped groove on the moving block are used in conjunction.

[0012] Furthermore, the support spring is always in a compressed state.

[0013] Furthermore, the elastic block is fitted with ball bearings that are tightly attached to the side wall of the outer slide plate. The elastic extrusion force of the elastic block pushes the power plate and the moving block, so that the moving block is sealed and fitted with the cylinder. A pressure relief valve on the moving block is connected to the inside of the cylinder.

[0014] Furthermore, the power plate, stabilizing bar, and mortgage frame are equipped with air jet pipes. One end of the air jet pipe in the power plate is connected to the pressure relief valve on the moving block, and one end of the air jet pipe on the mortgage frame faces the surface of the cable core between the two mortgage frames.

[0015] This application has the following beneficial effects:

[0016] 1. The polyethylene cable core stranding device provided in this application, by changing the pressing and guiding device to multiple guiding wheels, when the stranded cable core passes through multiple guiding wheels, the stranded cable core rolls and contacts the guiding wheels, thereby reducing the friction between the stranded cable core and the pressing and guiding device, reducing the wear of the pressing and guiding device, and extending the service life of the pressing and guiding device.

[0017] 2. The polyethylene cable core stranding device provided in this application drives the rotating shaft to reciprocate axially when the guide wheel and the sliding sleeve rotate. This causes the rotating shaft to drive the extrusion block to move synchronously, and the gas in the square cylinder is pressed into the cylinder through the connecting pipe. The gas in the cylinder pushes the sliding block and the guide wheel towards the cable core, thereby compensating for the wear of the guide wheel, ensuring that the guide hole composed of multiple guide wheels presses the cable core, and preventing the cable core from loosening due to reduced pressing force caused by wear of multiple guide wheels.

[0018] 3. The polyethylene cable core stranding device provided in this application involves two clamping frames contacting the stranded cable core at their ends. The diameter of the cable core is the distance between the two clamping frames. When the diameter of the cable core increases, the distance between the two clamping frames increases, thereby causing the cable core to push the clamping frames. The clamping frames drive the stabilizing bar, the power plate, and the moving block to move, so that other pressure relief valves on the moving block are connected to the inside of the cylinder, thereby increasing the pressure relief of the connected pressure relief valves, increasing the pressure inside the cylinder, and the pressure inside the cylinder pushes the moving block, the sliding sleeve, and the wire guide wheel to move towards the support axis, reducing the diameter of the wire guide hole, thereby increasing the pressing force of the wire guide hole on the stranded cable core, and ensuring the diameter of the stranded cable core.

[0019] 4. The polyethylene cable core stranding device provided in this application drives the sliding sleeve to rotate via the wire guide wheel, which in turn drives the rotating shaft and the extrusion block to move, allowing gas in the square cylinder to enter the cylinder body. When the gas in the cylinder body reaches the pressure relief valve, the gas is sprayed through the jet pipe onto the stranded wire core to blow off the dust adhering to the cable core, preventing the dust adhering to the cable core from affecting subsequent processing. Attached Figure Description

[0020] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0021] The present disclosure can be more clearly understood from the following detailed description with reference to the accompanying drawings, in which:

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the wire clamping device of the present invention;

[0024] Figure 3 This is a cross-sectional view of the wire clamping device of the present invention;

[0025] Figure 4 For the present invention Figure 3 Enlarged view of the local structure at point A;

[0026] Figure 5 This is a cross-sectional view of the line-passing mechanism and the compensation mechanism of the present invention;

[0027] Figure 6 For the present invention Figure 5 Enlarged view of the local structure at point B;

[0028] Figure 7 This is a cross-sectional view of the detection mechanism on the pressing and threading device of the present invention;

[0029] Figure 8 For the present invention Figure 7 Enlarged view of the local structure at point C;

[0030] Figure 9 This is a schematic diagram of the detection mechanism and adjustment mechanism of the present invention;

[0031] Figure 10 For the present invention Figure 9 Enlarged view of the local structure at point D.

[0032] In the diagram: 1. Stabilizer; 11. Support platform; 2. Power mechanism; 3. Rotary disk; 31. Wire guide mold; 4. Wire pressing device; 41. Bracket; 42. Wire guiding mechanism; 421. Cylinder; 422. Sliding block; 423. Sliding sleeve; 424. Rotating shaft; 425. Wire guide wheel; 43. Compensation mechanism; 431. Square cylinder; 432. Extrusion block; 433. Connecting pipe; 434. Connecting ring; 435. Pressure relief valve; 436. Air supply valve; 44. Detection mechanism; 441. Fixing plate; 442. Support spring; 443. Mortgage frame; 444. Stabilizing bar; 45. Adjustment mechanism; 451. Outer sliding plate; 452. Moving block; 453. Power plate; 454. Elastic block; 46. Air jet pipe; 5. Control box. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0034] Example 1

[0035] Please see Figure 1 A polyethylene cable core stranding device includes a stabilizing base 1, a power mechanism 2, a rotating disk 3, a clamping and guiding device 4, and a control box 5. A support platform 11 is fixedly installed on one side of the upper end of the stabilizing base 1, and the power mechanism 2 is fixedly installed on the support platform 11. The rotating disk 3 is fixedly sleeved on the power shaft of the power mechanism 2. A support rod is fixedly installed on the other side of the upper end of the stabilizing base 1, and the clamping and guiding device 4 is fixedly connected to the support rod. The center line of the clamping and guiding device 4 is on the same straight line as the center line of the power shaft of the power mechanism 2. A guiding die 31 is fixedly installed in the middle of the end face of the rotating disk 3 facing the clamping and guiding device 4. A control box 5 for controlling the operation of the stranding device is fixedly installed on the side wall of the support platform 11.

[0036] Please see Figures 2-10 The clamping wire guiding device 4 includes a bracket 41 and a wire guiding mechanism 42. The bracket 41 is fixedly installed on a support rod on a stabilizing base 1. Several wire guiding mechanisms 42 arranged in a circular array are fixedly installed on the inner wall of the bracket 41. Each wire guiding mechanism 42 includes a cylinder 421, a sliding block 422, a sliding sleeve 423, and a wire guiding wheel 425. The cylinder 421 is fixedly installed on the inner wall of the bracket 41, and the opening of the cylinder 421 faces the axis of the bracket 41. A sliding block 422 is slidably and sealed inside the cylinder 421. The sliding block 422 is n-shaped, and its opening extends out of the cylinder 421 and faces the axis of the bracket 41. The upper end of the cylinder 421 of the sliding block 422... The slide block 422 is filled with high-pressure gas. A sliding sleeve 423 passes through one end of the slide block 422 facing the axis of the bracket 41. A wire guide wheel 425 is fixedly sleeved on the sliding sleeve 423. The wire guide wheel 425 is located in the middle of the n-shaped position of the slide block 422, and several wire guide wheels 425 surround a wire guide hole. When the stranded cable core passes through the wire guide hole surrounded by several wire guide wheels 425, the stranded cable core drives the wire guide wheel 425 to rotate, so that the stranded cable core and the wire guide wheel 425 generate rolling friction, thereby reducing the friction between the stranded cable core and the wire guide hole, reducing the wear at the wire guide hole position, and extending the service life of the wire guide hole surrounded by several wire guide wheels 425.

[0037] A rotating shaft 424 passes through the center of the sliding sleeve 423. A reciprocating spiral groove is formed on the rotating shaft 424. A guide block is fixedly installed on the inner wall of the sliding sleeve 423, and the guide block is slidably installed in the reciprocating spiral groove of the rotating shaft 424. Compensation mechanisms 43 for compensating the wear of the thread guide wheel 425 are provided at both ends of the rotating shaft 424. The compensation mechanism 43 includes a square tube 431, a pressing block 432, a connecting pipe 433, a connecting ring 434, a pressure relief valve 435, and an air supply valve 436. The square tube 431 is fixedly installed on both sides of the sliding block 422, and the square tube 431 is fitted with... Outside the rotating shaft 424, compression blocks 432 are fixedly sleeved at both ends of the rotating shaft 424. The compression blocks 432 are slidably sealed and installed inside the square tube 431. The end of the square tube 431 is connected to a connecting pipe 433 through a one-way valve. The other end of the connecting pipe 433 is connected to the cylinder 421. A connecting ring 434 is provided inside the bracket 41, and the connecting ring 434 is used to connect several cylinders 421. A gas replenishing valve 436 is fixedly installed on the side wall of the square tube 431. The gas replenishing valve 436 is used to replenish the gas inside the square tube 431. A pressure relief valve 435 is connected to the side wall of the cylinder 421.

[0038] As the stranded cable core passes through the guide holes formed by several guide rollers 425, the stranded cable core drives the guide rollers 425 to rotate. The rotating guide rollers 425 drive the sliding sleeve 423 to rotate synchronously. Since square pressing blocks 432 are connected to both ends of the rotating shaft 424, the rotating shaft 424 cannot rotate with the sliding sleeve 423. At this time, the sliding sleeve 423 drives the guide block inside the sliding sleeve 423 to rotate synchronously, causing the guide block to slide in the reciprocating spiral groove on the rotating shaft 424. This causes the guide block to push the rotating shaft 424 to move reciprocally in the axial direction. The reciprocating rotating shaft 424 drives the extrusion block 432 to move synchronously, causing the extrusion block 432 to extrude the gas in the square tubes 431 at both ends. The gas in the square tubes 431 enters the cylinder 421 through the one-way valve and the connecting pipe 433. When the wire guide wheel 425 wears, the gas in the cylinder 421 is replenished. The gas in the cylinder 421 pushes the sliding block 422, the sliding sleeve 423 and the wire guide wheel 425 to move towards the axis of the support 41, thereby compensating for the wear of the wire guide wheel 425 and keeping the diameter of the wire guide hole composed of several wire guide wheels 425 unchanged.

[0039] The flow direction of the one-way valve on the connecting pipe 433 is from inside the square tube 431 to inside the cylinder 421, ensuring that the gas inside the square tube 431, after being compressed, can flow to the cylinder 421 and preventing backflow of gas inside the cylinder 421. The flow direction of the air replenishment valve 436 is from the outside to inside the square tube 431. When the gas inside the square tube 431 is compressed into the cylinder 421, the rotating shaft 424 continues to rotate, driving the compression block 432 to reset. When the compression block 432 passes the air replenishment valve 436, the gas is replenished to the square tube through the air replenishment valve 436. The gas inside the square tube 431; the pressure relief valve 435, which is connected to the cylinder 421, flows from the cylinder 421 to the outside. The gas inside the square tube 431 is squeezed into the cylinder 421. When the pressure in the cylinder 421 is too high, the gas inside the cylinder 421 is released through the pressure relief valve 435 connected to the cylinder 421 to prevent the gas inside the cylinder 421 from having too much pressure on the sliding block 422, the sliding sleeve 423 and the wire guide wheel 425, which would cause the cable core after being twisted in the middle of several wire guide wheels 425 to be excessively squeezed.

[0040] The working principle of Embodiment 1 of the present invention is as follows:

[0041] Please see Figures 1-10 When the stranded cable core passes through the wire passage hole formed by several wire guide rollers 425, the stranded cable core drives the wire guide rollers 425 to rotate, causing the stranded cable core and the wire guide rollers 425 to generate rolling friction, thereby reducing the friction between the stranded cable core and the wire passage hole, reducing the wear at the wire passage hole position, and extending the service life of the wire passage hole formed by several wire guide rollers 425.

[0042] As the stranded cable core passes through the guide holes formed by several guide rollers 425, the stranded cable core drives the guide rollers 425 to rotate. The rotating guide rollers 425 drive the sliding sleeve 423 to rotate synchronously. Since the rotating shaft 424 is connected to directional pressing blocks 432 at both ends, the rotating shaft 424 cannot rotate with the sliding sleeve 423. At this time, the sliding sleeve 423 drives the guide block inside the sliding sleeve 423 to rotate synchronously, causing the guide block to slide in the reciprocating spiral groove on the rotating shaft 424. This causes the guide block to push the rotating shaft 424 to move reciprocally in the axial direction. The reciprocating rotating shaft 424 drives the extrusion block 432 to move synchronously, causing the extrusion block 432 to extrude the gas in the square tubes 431 at both ends. The gas in the square tubes 431 enters the cylinder 421 through the one-way valve and the connecting pipe 433. When the wire guide wheel 425 wears, the gas in the cylinder 421 is replenished. The gas in the cylinder 421 pushes the sliding block 422, the sliding sleeve 423 and the wire guide wheel 425 to move towards the axis of the support 41, thereby compensating for the wear of the wire guide wheel 425 and keeping the diameter of the wire guide hole composed of several wire guide wheels 425 unchanged.

[0043] Example 2

[0044] Example 2 is a further improvement based on Example 1.

[0045] Unlike Example 1, please refer to Figures 1-10 A pair of detection mechanisms 44 are fixedly installed on the side of the bracket 41 away from the rotating disk 3. The two detection mechanisms 44 are arranged symmetrically above and below. The detection mechanism 44 includes a fixed plate 441, a support spring 442, a collateral frame 443 and a stabilizing bar 444. The fixed plate 441 is fixedly installed on the side wall of the bracket 41. The support spring 442 is fixedly connected to the opposite side of the fixed plate 441. The collateral frame 443 is fixedly connected to the other end of the support spring 442. Arc-shaped grooves are opened on the opposite surfaces of the two collateral frames 443. The arc-shaped grooves on the two collateral frames 443 form a detection hole. The diameter of the detection hole is equal to the diameter of the qualified cable core after stranding.

[0046] A stabilizing bar 444 is fixedly connected to the top of the mortgage frame 443 near the support 41. The stabilizing bar 444 abuts against the cylinder 421. When the diameter of the twisted cable core is too large, the mortgage frame 443 is pushed by the twisted cable core, causing the mortgage frame 443 to compress the support spring 442. When the mortgage frame 443 moves to compress the support spring 442, the mortgage frame 443 drives the stabilizing bar 444 to move synchronously, so that the stabilizing bar 444 abutting against the cylinder 421 provides stable support for the mortgage frame 443.

[0047] An adjustment mechanism 45 for adjusting the air pressure inside the cylinder 421 is provided on the cylinder 421 that is close to the detection mechanism 44. The adjustment mechanism 45 includes an outer sliding plate 451, a moving block 452, a power plate 453 and an elastic block 454. The side wall of the cylinder 421 is fixedly installed with symmetrically arranged outer sliding plates 451. The moving block 452 is slidably installed between the two outer sliding plates 451. Several pressure relief valves 435 are equidistantly installed on the moving block 452. The straight line where the several pressure relief valves 435 are located passes through the axis of the tight-pressing wire-passing device 4. The pressure relief valve 435 that is farther away from the axis of the tight-pressing wire-passing device 4 has a smaller pressure relief. The end of the stabilizing bar 444 that is close to the cylinder 421 is fixedly connected to the power plate 453, and the power plate 453 is close to the moving block 452. The side of the power plate 453 that is away from the moving block 452 is fixedly connected to the elastic block 454. The other side of the elastic block 454 is close to the outer sliding plate 451.

[0048] A wedge-shaped groove is provided on the surface of the power plate 453 that abuts against the moving block 452. The wedge-shaped groove on the power plate 453 and the wedge-shaped groove on the moving block 452 work together. After the stranded cable core passes through the cable hole composed of several cable guide wheels 425, the clamping frames 443 on the upper and lower sides of the cable core detect the diameter of the cable core. If the diameter of the stranded cable core is large, the cable core will push the clamping frame 443 to squeeze the support spring 442. The clamping frame 443 drives the stabilizing bar 444 and the power plate 453 to move synchronously. At this time, the wedge-shaped groove on the power plate 453 is engaged with the moving block 452. Within the wedge-shaped groove on 2, the power plate 453 drives the moving block 452 to move synchronously, thereby connecting the other pressure relief valves 435 on the moving block 452 with the inside of the cylinder 421, increasing the pressure relief pressure of the connected pressure relief valves 435, and increasing the pressure inside the cylinder 421. The increase in internal pressure of the cylinder 421 will push the sliding block 422, the sliding sleeve 423 and the wire guide wheel 425 to move towards the axis of the bracket 41, thereby reducing the diameter of the wire guide hole formed by several wire guide wheels 425, thereby increasing the pressing force of the wire guide hole on the stranded cable core, and ensuring the diameter of the stranded cable core.

[0049] The support spring 442 is always in a compressed state; the compressed support spring 442 provides support force to the mortgage frame 443, ensuring that the mortgage frames 443 on both sides can always be in close contact. Only when the diameter of the twisted cable core is large can the cable core accurately push the mortgage frame 443 to move.

[0050] The elastic block 454 is fitted with ball bearings that are close to the side wall of the outer slide plate 451. The ball bearings reduce the friction between the elastic block 454 and the outer slide plate 451, preventing excessive friction between the elastic block 454 and the outer slide plate 451 from affecting the sliding of the elastic block 454. The elastic extrusion force of the elastic block 454 pushes the power plate 453 and the moving block 452, so that the moving block 452 is sealed and fitted with the cylinder 421. A pressure relief valve 435 on the moving block 452 is connected to the inside of the cylinder 421.

[0051] Air jet pipes 46 are provided inside the power plate 453, the stabilizing bar 444, and the collateral frame 443. One end of the air jet pipe 46 in the power plate 453 is connected to the pressure relief valve 435 on the moving block 452. One end of the air jet pipe 46 on the collateral frame 443 faces the surface of the cable core between the two collateral frames 443. When the stranded cable core passes through the cable guide hole formed by several cable guide wheels 425, the stranded cable core drives the cable guide wheels 425 to rotate. The rotating cable guide wheels 425 drive the sliding sleeve 423 and the guide block inside the sliding sleeve 423 to rotate synchronously, so that the guide block slides in the reciprocating spiral groove on the rotating shaft 424, thereby making the cable core rotate smoothly. The guide block drives the rotating shaft 424 to reciprocate axially. The reciprocating rotating shaft 424 drives the extrusion block 432 to move synchronously, so that the extrusion block 432 extrudes the gas in the square cylinders 431 at both ends. The gas in the square cylinders 431 enters the cylinder 421 through the one-way valve and the connecting pipe 433. The gas in the cylinder 421 increases and the gas pressure increases. The gas in the cylinder 421 is discharged through the pressure relief valve 435 and the jet pipe 46. The discharged gas is sprayed through the end of the jet pipe 46 onto the stranded cable core to blow off the dust on the cable core and prevent the dust on the cable core from affecting subsequent processing.

[0052] The working principle of Embodiment 2 of the present invention is as follows:

[0053] Please see Figures 1-10 After the stranded cable core passes through the cable guide holes composed of several guide rollers 425, the clamping frames 443 on both sides of the cable core detect the diameter of the cable core. If the diameter of the stranded cable core is large, the cable core will push the clamping frame 443 to compress the support spring 442. The clamping frame 443 drives the stabilizing bar 444 and the power plate 453 to move synchronously. At this time, the wedge groove on the power plate 453 is engaged in the wedge groove on the moving block 452, so that the power plate 453 drives the moving block 452 to move synchronously. The movement causes the other pressure relief valves 435 on the moving block 452 to connect with the inside of the cylinder 421, increasing the pressure relief of the connected pressure relief valves 435 and increasing the pressure inside the cylinder 421. The increased pressure inside the cylinder 421 will push the sliding block 422, the sliding sleeve 423 and the wire guide wheel 425 to move towards the axis of the bracket 41, thereby reducing the diameter of the wire guide hole formed by several wire guide wheels 425, thereby increasing the pressing force of the wire guide hole on the stranded cable core and ensuring the diameter of the stranded cable core.

[0054] When the stranded cable core passes through the guide hole formed by several guide rollers 425, the stranded cable core drives the guide rollers 425 to rotate. The rotating guide rollers 425 drive the sliding sleeve 423 and the guide block inside the sliding sleeve 423 to rotate synchronously, so that the guide block slides in the reciprocating spiral groove on the rotating shaft 424. This causes the guide block to push the rotating shaft 424 to move back and forth axially. The reciprocating rotating shaft 424 drives the extrusion block 432 to move synchronously, so that the extrusion block 432 extrudes the gas in the square cylinders 431 at both ends. The gas in the square cylinder 431 enters the cylinder 421 through the one-way valve and the connecting pipe 433. The gas in the cylinder 421 increases, and the gas pressure increases. The gas in the cylinder 421 is discharged through the pressure relief valve 435 and the air jet pipe 46. The discharged gas is sprayed onto the stranded cable core through the end of the air jet pipe 46 to blow off the dust on the cable core and prevent the dust on the cable core from affecting subsequent processing.

Claims

1. A polyethylene cable core stranding device, comprising a stabilizing base (1), a power mechanism (2), a rotating disk (3), a clamping and guiding device (4), and a control box (5), characterized in that: The clamping wire guiding device (4) includes a bracket (41) and a wire guiding mechanism (42). The bracket (41) is fixedly installed on the stabilizing base (1), and a plurality of wire guiding mechanisms (42) are fixedly installed on the bracket (41). The wire guiding mechanism (42) includes: The cylinder (421) is fixedly installed on the inner wall of the bracket (41); The sliding block (422) is slidably and sealed inside the cylinder (421) at one end, and the other end is n-shaped and extends out of the cylinder (421). The cylinder (421) at the upper end of the sliding block (422) is filled with high-pressure gas. Sliding sleeve (423) penetrates one end of the n-shaped sliding block (422); The wire guide wheel (425) is fixedly sleeved on the sliding sleeve (423) and is located in the middle of the n-shaped position of the sliding block (422). Several of the wire guide wheels (425) are arranged around a wire guide hole. A rotating shaft (424) passes through the center of the sliding sleeve (423). A reciprocating helical groove is provided on the rotating shaft (424). A guide block is fixedly installed on the inner wall of the sliding sleeve (423). The guide block is slidably installed in the reciprocating helical groove of the rotating shaft (424). Compensation mechanisms (43) for compensating the wear of the thread guide wheel (425) are provided at both ends of the rotating shaft (424). The compensation mechanism (43) includes: A square tube (431) is fixedly installed on both sides of the sliding block (422); The extrusion block (432) is fixedly sleeved on both ends of the rotating shaft (424) and slidably sealed inside the square tube (431). The end of the square tube (431) is connected to the connecting pipe (433) through a one-way valve. The other end of the connecting pipe (433) is connected to the cylinder (421). The bracket (41) is provided with a connecting ring (434), which is used to connect several cylinders (421). The air supply valve (436) is fixedly installed on the side wall of the square tube (431); The pressure relief valve (435) is connected to the cylinder (421).

2. The polyethylene cable core stranding device according to claim 1, characterized in that: The flow direction of the one-way valve on the connecting pipe (433) is from inside the square tube (431) to inside the cylinder (421), the flow direction of the air supply valve (436) is from the outside to inside the square tube (431), and the flow direction of the pressure relief valve (435) connected to the cylinder (421) is from the cylinder (421) to the outside.

3. The polyethylene cable core stranding device according to claim 1, characterized in that: A pair of detection mechanisms (44) are fixedly installed on the side of the bracket (41) away from the rotating disk (3), and the detection mechanism (44) includes: The fixing plate (441) is fixedly installed on the side wall of the bracket (41); A support spring (442) is fixedly connected at one end to the side opposite to the fixed plate (441); The mortgage frame (443) is fixedly connected to the other end of the support spring (442). The two mortgage frames (443) have arc-shaped grooves on their opposite surfaces. The arc-shaped grooves on the two mortgage frames (443) form a detection hole. The diameter of the detection hole is equal to the diameter of the qualified cable core after stranding.

4. A polyethylene cable core stranding device according to claim 3, characterized in that: The top of the mortgage frame (443) near the support (41) is fixedly connected to a stabilizing bar (444), which abuts against the cylinder (421).

5. A polyethylene cable core stranding device according to claim 4, characterized in that: The cylinder (421) of the closely attached detection mechanism (44) is provided with an adjustment mechanism (45) for adjusting the air pressure inside the cylinder (421), the adjustment mechanism (45) comprising: Two outer sliding plates (451) are fixedly installed on the side wall of the cylinder (421); The movable block (452) is slidably installed between the two outer slide plates (451). Several pressure relief valves (435) are installed at equal intervals on the movable block (452). The pressure relief valve (435) that is farther away from the axis of the tight-pressing wire-passing device (4) has a smaller pressure relief. The power plate (453) is fixedly connected to one end of the stabilizing bar (444) near the cylinder (421). The power plate (453) is in close contact with the moving block (452). An elastic block (454) is fixedly connected to the side of the power plate (453) away from the moving block (452). The other side of the elastic block (454) is in close contact with the outer sliding plate (451).

6. A polyethylene cable core stranding device according to claim 5, characterized in that: The power plate (453) and the moving block (452) have wedge-shaped grooves on their surfaces that abut against each other, and the wedge-shaped grooves on the power plate (453) and the moving block (452) work together.

7. A polyethylene cable core stranding device according to claim 6, characterized in that: The support spring (442) is always in a compressed state.

8. A polyethylene cable core stranding device according to claim 6, characterized in that: The elastic block (454) is fitted with balls on the side wall of the outer slide plate (451). The elastic extrusion force of the elastic block (454) pushes the power plate (453) and the moving block (452) to seal the moving block (452) with the cylinder (421). A pressure relief valve (435) on the moving block (452) is connected to the inside of the cylinder (421).

9. A polyethylene cable core stranding device according to claim 6, characterized in that: The power plate (453), the stabilizing bar (444) and the mortgage frame (443) are equipped with air jet pipes (46). One end of the air jet pipe (46) in the power plate (453) is connected to the pressure relief valve (435) on the moving block (452). One end of the air jet pipe (46) on the mortgage frame (443) faces the surface of the cable core between the two mortgage frames (443).

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