Polyethylene cable core stranding equipment

Abstract

The invention relates to the technical field of cable core twisting equipment, and discloses polyethylene cable core twisting equipment, which is used for solving the problem that a pressing wire passing device is excessively worn by a cable core, so that the pressing force of the cable core is small and the cable core is loosened. When the stranded cable core passes through the plurality of wire passing wheels, the stranded cable core is in rolling contact with the wire passing wheels, so that the friction force between the stranded cable core and the pressing wire passing device is reduced, the abrasion of the pressing wire passing device is reduced, and the service life of the pressing wire passing device is prolonged; when the wire passing wheel and the sliding sleeve rotate, the rotating shaft is driven to move in a reciprocating mode in the axial direction, the rotating shaft drives the extrusion block to move synchronously, gas in the square cylinder is pressed into the cylinder through the communicating pipe, the gas in the cylinder pushes the sliding block and the wire passing wheel to move towards a cable core, and therefore abrasion of the wire passing wheel is compensated. Pressing of the cable core by the wire passing hole formed by the plurality of wire passing wheels is ensured, and the phenomenon of loosening caused by reduction of the pressing force of the cable core due to abrasion of the plurality of wire passing wheels is prevented.

Description

Technical Field

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

[0002] The cable core is a key component of common types such as power cables and communication cables. Its design and manufacture directly affect the electrical performance, mechanical strength, and environmental adaptability of the cable. When manufacturing a polyethylene cable core, usually multiple wire cores are stranded into a cable through a stranding device, and then a polyethylene film is coated on the outer layer of the cable.

[0003] The stranding equipment for cable cores generally includes a stable seat, a power mechanism, a rotating disk, and a compacting wire-passing device. The coiled wire cores are installed on the rotating disk, and the rotating disk drives the coiled wire cores to rotate. One end of the wire core passes through a wire-passing die and the compacting wire-passing device, and under the action of a traction mechanism, the wire cores wound together are pulled out and wound up. However, the compacting wire-passing device is penetrated by the stranded cable core for a long time, and there is serious sliding friction between the stranded cable core and the compacting wire-passing device, resulting in an increase in the diameter of the wire-passing hole in the middle of the compacting wire-passing device, so that the stranded cable core cannot be pressed by the wire-passing hole of the compacting wire-passing device, and the phenomenon of loose cable core appears. Summary of the Invention

[0004] This application proposes a polyethylene cable core stranding equipment, which has the advantages of reducing the wear between the cable core and the compacting wire-passing device and automatically compensating for the wear of the compacting wire-passing device, so as to solve the problem that the compacting wire-passing device is excessively worn by the cable core, resulting in a small pressing force of the cable core and loosening.

[0005] To achieve the above object, this application adopts the following technical solution: A polyethylene cable core stranding equipment, including a stable seat, a power mechanism, a rotating disk, a compacting wire-passing device, and a control box. The compacting wire-passing device includes a bracket and a wire-passing mechanism. The bracket is fixedly installed on the stable seat, and several wire-passing mechanisms are fixedly installed on the bracket. The wire-passing mechanism includes: a cylinder body, fixedly installed on the inner wall of the bracket; a sliding block, one end of which is slidably and hermetically installed in the cylinder body, and the other end is n-shaped and extends out of the cylinder body. The cylinder body above the sliding block is filled with high-pressure gas; a sliding sleeve, passing through the n-shaped end of the sliding block; a wire-passing wheel, fixedly sleeved on the sliding sleeve and located in the middle of the n-shaped position of the sliding block. Several of the wire-passing wheels surround to form a wire-passing hole.

[0006] Furthermore, a rotating shaft penetrates through the center of the sliding sleeve. A reciprocating spiral groove is formed on the rotating shaft. A guiding block is fixedly installed on the inner wall of the sliding sleeve, and the guiding block is slidably installed in the reciprocating spiral groove of the rotating shaft. Compensation mechanisms for compensating for the wear of the wire passing wheels are provided at both ends of the rotating shaft. The compensation mechanisms include: square cylinders fixedly installed on both sides of the sliding block; extrusion blocks fixedly sleeved on both ends of the rotating shaft and slidably and sealingly installed in the square cylinders. The end of the square cylinder is communicated with a connecting pipe through a one-way valve, and the other end of the connecting pipe is communicated with a cylinder body. A communicating ring is arranged in the bracket, and the communicating ring is used for communicating a plurality of cylinder bodies; an air inlet valve fixedly installed on the side wall of the square cylinder; a pressure relief valve communicated with the cylinder body.

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

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

[0009] Furthermore, a stabilizing strip is fixedly connected to the top end of the mortgaging frame close to the bracket side, and the stabilizing strip abuts against the cylinder body.

[0010] Furthermore, an adjusting mechanism for adjusting the air pressure in the cylinder body is provided on the cylinder body close to the detection mechanism. The adjusting mechanism includes: two outer sliding plates fixedly installed on the side wall of the cylinder body; a moving block slidably installed between the two outer sliding plates. A plurality of pressure relief valves are equidistantly installed on the moving block, and the pressure relief pressure of the pressure relief valve farther away from the axis of the wire pressing device is smaller; a power plate fixedly connected to the end of the stabilizing strip close to the cylinder body, the power plate is in close contact with the moving block, an elastic block is fixedly connected to the side of the power plate away from the moving block, and the other side of the elastic block is in close contact with the outer sliding plate.

[0011] Furthermore, a wedge-shaped groove is formed on the surface of the power plate in contact with the moving block, and the wedge-shaped groove on the power plate and the wedge-shaped groove on the moving block are used in cooperation.

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

[0013] Further, the elastic block is embedded with balls closely against 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 in sealed fit with the cylinder body. A pressure relief valve on the moving block is communicated with the inside of the cylinder body.

[0014] Further, an air jet pipe is arranged in the power plate, the stabilizing strip and the mortgage frame. One end of the air jet pipe in the power plate is communicated with 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] The present application has the following beneficial effects:

[0016] 1. A polyethylene cable core stranding device provided by the present application changes the tight pressing wire-passing device into a plurality of wire-passing wheel types. When the stranded cable core passes through a plurality of wire-passing wheels, the stranded cable core is in rolling contact with the wire-passing wheels, thereby reducing the friction between the stranded cable core and the tight pressing wire-passing device, reducing the wear of the tight pressing wire-passing device, and prolonging the service life of the tight pressing wire-passing device.

[0017] 2. A polyethylene cable core stranding device provided by the present application, when the wire-passing wheel and the sliding sleeve rotate, drives the rotating shaft to move axially back and forth, so that the rotating shaft drives the extrusion block to move synchronously, presses the gas in the square cylinder into the cylinder through the connecting pipe, and makes the gas in the cylinder push the sliding block and the wire-passing wheel to move towards the cable core, thereby compensating for the wear of the wire-passing wheel, ensuring the pressing of the cable core by the wire-passing holes formed by a plurality of wire-passing wheels, and preventing the cable core from loosening due to the reduction of the pressing force of the cable core caused by the wear of the plurality of wire-passing wheels.

[0018] 3. A polyethylene cable core stranding device provided by the present application, the ends of two mortgage frames contact the stranded cable core, and the diameter of the cable core is the distance between the two mortgage frames. When the diameter of the cable core becomes larger, the distance between the two mortgage frames increases, so that the cable core pushes the mortgage frame, and the mortgage frame drives the stabilizing strip, the power plate and the moving block to move, so that other pressure relief valves on the moving block are communicated with the inside of the cylinder body, thereby increasing the pressure relief pressure of the communicated pressure relief valves, increasing the pressure in the cylinder body, and the pressure in the cylinder body pushes the moving block, the sliding sleeve and the wire-passing wheel to move towards the axis of the support, reducing the diameter of the wire-passing hole, thereby increasing the pressing force of the wire-passing hole on the stranded cable core and ensuring the diameter of the stranded cable core.

[0019] 4. A polyethylene cable core stranding device provided by the present application, when the wire-passing wheel drives the sliding sleeve to rotate, drives the rotating shaft and the extrusion block to move, so that the gas in the square cylinder enters the cylinder body. When the gas in the cylinder body reaches the pressure relief pressure of the pressure relief valve, the gas is sprayed towards the stranded wire core through the air jet pipe to blow off the dust contaminated on the cable core, preventing the dust contaminated on the cable core from affecting the subsequent processing. Description of the Drawings

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

[0021] With reference to the accompanying drawings, the present disclosure can be more clearly understood from the following detailed description, wherein:

[0022] Figure 1 It is a schematic three-dimensional structure diagram of the present invention;

[0023] Figure 2 It is a schematic structural diagram of the wire pressing and passing device of the present invention;

[0024] Figure 3 It is a sectional view of the wire pressing and passing device of the present invention;

[0025] Figure 4 For the present invention Figure 3 The enlarged partial structure diagram at position A in it;

[0026] Figure 5 It is a sectional view of the wire passing mechanism and the compensation mechanism of the present invention;

[0027] Figure 6 For the present invention Figure 5 The enlarged partial structure diagram at position B in it;

[0028] Figure 7 It is a sectional view of the detection mechanism on the wire pressing and passing device of the present invention;

[0029] Figure 8 For the present invention Figure 7 The enlarged partial structure diagram at position C in it;

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

[0031] Figure 10 For the present invention Figure 9 The enlarged partial structure diagram at position D in it.

[0032] In the figure: 1. Stable seat; 11. Support platform; 2. Power mechanism; 3. Rotating disk; 31. Wire passing die; 4. Wire pressing and passing device; 41. Bracket; 42. Wire passing mechanism; 421. Cylinder body; 422. Sliding block; 423. Sliding sleeve; 424. Rotating shaft; 425. Wire passing 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. Fixed plate; 442. Support spring; 443. Mortgage frame; 444. Stable bar; 45. Adjustment mechanism; 451. Outer sliding plate; 452. Moving block; 453. Power plate; 454. Elastic block; 46. Air spraying pipe; 5. Control box. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without making creative efforts belong to the scope of protection of the present application.

[0034] Embodiment 1

[0035] Please refer to Figure 1 , a polyethylene cable core stranding device, including a stable base 1, a power mechanism 2, a rotating disk 3, a compacting wire-passing device 4 and a control box 5. On one side of the upper end of the stable base 1, a support platform 11 is fixedly installed. On the support platform 11, a power mechanism 2 is fixedly installed. A rotating disk 3 is fixedly sleeved on the power shaft of the power mechanism 2. On the other side of the upper end of the stable base 1, a support rod is fixedly installed. A compacting wire-passing device 4 is fixedly connected to the support rod. The center line of the compacting wire-passing device 4 and the center line of the power shaft of the power mechanism 2 are on the same straight line. In the middle of the end face of the rotating disk 3 facing the compacting wire-passing device 4, a wire-passing die 31 is fixedly installed. On the side wall of the support platform 11, a control box 5 for controlling the operation of the stranding device is fixedly installed.

[0036] Please refer to Figures 2 - 10 , the compacting wire-passing device 4 includes a bracket 41 and a wire-passing mechanism 42. The bracket 41 is fixedly installed on the support rod on the stable base 1. A plurality of wire-passing mechanisms 42 arranged in a circular array are fixedly installed on the inner wall of the bracket 41. The wire-passing mechanism 42 includes a cylinder body 421, a sliding block 422, a sliding sleeve 423 and a wire-passing wheel 425. The cylinder body 421 is fixedly installed on the inner wall of the bracket 41, and the opening of the cylinder body 421 faces the axis of the bracket 41. A sliding block 422 is slidably and sealingly installed in the cylinder body 421. The sliding block 422 is n-shaped, and the opening of the sliding block 422 extends out of the cylinder body 421 and faces the axis of the bracket 41. High-pressure gas is filled in the cylinder body 421 above the sliding block 422. A sliding sleeve 423 penetrates through one end of the sliding block 422 facing the axis of the bracket 41. A wire-passing wheel 425 is fixedly sleeved on the sliding sleeve 423. The wire-passing wheel 425 is in the middle of the n-shaped position of the sliding block 422, and a plurality of wire-passing wheels 425 surround a wire-passing hole; when the stranded cable core passes through the wire-passing hole surrounded by a plurality of wire-passing wheels 425, the stranded cable core drives the wire-passing wheels 425 to rotate, so that the rolling friction is generated between the stranded cable core and the wire-passing wheels 425, thereby reducing the friction between the stranded cable core and the wire-passing hole, reducing the wear at the wire-passing hole position, and prolonging the service life of the wire-passing hole surrounded by a plurality of wire-passing wheels 425.

[0037] The center of the sliding sleeve 423 is penetrated by a rotating shaft 424. A reciprocating spiral groove is provided on the rotating shaft 424. A guiding block is fixedly installed on the inner wall of the sliding sleeve 423. The guiding block is slidably installed in the reciprocating spiral groove of the rotating shaft 424. Compensating mechanisms 43 for compensating the wear of the wire passing wheels 425 are provided at both ends of the rotating shaft 424. The compensating mechanism 43 includes a square cylinder 431, a pressing block 432, a connecting pipe 433, a connecting ring 434, a pressure relief valve 435 and a gas filling valve 436. The square cylinder 431 is fixedly installed on both sides of the sliding block 422 and sleeved outside the rotating shaft 424. Pressing blocks 432 are fixedly sleeved at both ends of the rotating shaft 424. The pressing blocks 432 are slidably and sealingly installed in the square cylinder 431. The end of the square cylinder 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 body 421. A connecting ring 434 is provided in the bracket 41, and the connecting ring 434 is used to connect a plurality of cylinder bodies 421. The side wall of the square cylinder 431 is fixedly installed with a gas filling valve 436, and the gas filling valve 436 is used to supplement the gas inside the square cylinder 431. The side wall of the cylinder body 421 is connected with a pressure relief valve 435;

[0038] When the stranded cable core passes through the wire passing holes formed by a plurality of wire passing wheels 425, the stranded cable core drives the wire passing wheels 425 to rotate. The rotating wire passing wheels 425 drive the sliding sleeve 423 to rotate synchronously. Since the two ends of the rotating shaft 424 are connected with square pressing blocks 432, the rotating shaft 424 cannot rotate with the sliding sleeve 423. At this time, the sliding sleeve 423 drives the guiding block inside the sliding sleeve 423 to rotate synchronously, so that the guiding block slides in the reciprocating spiral groove on the rotating shaft 424, thereby pushing the rotating shaft 424 to move axially in a reciprocating manner. The reciprocatingly moving rotating shaft 424 drives the pressing block 432 to move synchronously, so that the pressing block 432 compresses the gas in the two end square cylinders 431, and the gas in the square cylinder 431 enters the cylinder body 421 through the one-way valve and the connecting pipe 433. When the wire passing wheel 425 is worn, the gas in the cylinder body 421 is supplemented, and the gas in the cylinder body 421 pushes the sliding block 422, the sliding sleeve 423 and the wire passing wheel 425 to move towards the axis of the bracket 41, thereby compensating for the wear of the wire passing wheel 425 and keeping the diameter of the wire passing holes formed by a plurality of wire passing wheels 425 unchanged.

[0039] The flow direction of the one-way valve on the connecting pipe 433 is from the inside of the square cylinder 431 to the inside of the cylinder 421, ensuring that after the gas in the square cylinder 431 is squeezed, it can flow into the cylinder 421 and preventing the gas in the cylinder 421 from flowing back; the flow direction of the air supply valve 436 is from the outside to the inside of the square cylinder 431. When the gas in the square cylinder 431 is squeezed into the cylinder 421, the rotating shaft 424 continues to rotate, driving the extrusion block 432 to reset. When the extrusion block 432 passes over the air supply valve 436, the gas inside the square cylinder 431 is replenished through the air supply valve 436; the flow direction of the pressure relief valve 435 connected to the cylinder 421 is from the cylinder 421 to the outside. When the gas in the square cylinder 431 is squeezed into the cylinder 421 and the pressure in the cylinder 421 is too high, the gas in the cylinder 421 is released through the pressure relief valve 435 connected to the cylinder 421, preventing the gas in the cylinder 421 from exerting excessive pressure on the sliding block 422, the sliding sleeve 423, and the wire passing wheel 425, which may cause the cable core after being stranded among several wire passing wheels 425 to be over-extruded.

[0040] The working principle of the first embodiment of the present invention is as follows:

[0041] Please refer to Figures 1 - 10 , when the stranded cable core passes through the wire passing holes formed by several wire passing wheels 425, the stranded cable core drives the wire passing wheels 425 to rotate, causing rolling friction between the stranded cable core and the wire passing wheels 425, thereby reducing the friction between the stranded cable core and the wire passing holes, reducing the wear at the position of the wire passing holes, and extending the service life of the wire passing holes formed by several wire passing wheels 425;

[0042] When the stranded cable core passes through the wire passing holes formed by several wire passing wheels 425, the stranded cable core drives the wire passing wheels 425 to rotate, and the rotating wire passing wheels 425 drive the sliding sleeve 423 to rotate synchronously. Since the two ends of the rotating shaft 424 are connected with extrusion blocks 432 in a certain direction, the rotating shaft 424 cannot rotate with the sliding sleeve 423. At this time, the sliding sleeve 423 drives the guiding blocks inside the sliding sleeve 423 to rotate synchronously, causing the guiding blocks to slide in the reciprocating spiral grooves on the rotating shaft 424, so that the guiding blocks push the rotating shaft 424 to move axially in a reciprocating manner. The reciprocatingly moving rotating shaft 424 drives the extrusion blocks 432 to move synchronously, squeezing the gas in the two end square cylinders 431, so that the gas in the square cylinders 431 enters the cylinder 421 through the one-way valve and the connecting pipe 433. When the wire passing wheels 425 are worn, the gas in the cylinder 421 is replenished, and the gas in the cylinder 421 pushes the sliding block 422, the sliding sleeve 423, and the wire passing wheels 425 towards the axis of the bracket 41, thereby compensating for the wear of the wire passing wheels 425 and keeping the diameter of the wire passing holes formed by several wire passing wheels 425 unchanged.

[0043] Embodiment Two

[0044] Embodiment Two is a further improvement based on Embodiment One.

[0045] Different from the first embodiment, please refer to Figures 1 - 10 , on the side of the bracket 41 away from the rotating disk 3, a pair of detection mechanisms 44 are fixedly installed. The two detection mechanisms 44 are symmetrically arranged up and down. The detection mechanism 44 includes a fixing plate 441, a support spring 442, a mortgage bracket 443 and a stabilizing bar 444. The fixing plate 441 is fixedly installed on the side wall of the bracket 41. On the opposite sides of the fixing plate 441, a support spring 442 is fixedly connected. The other end of the support spring 442 is fixedly connected to a mortgage bracket 443. Arc-shaped grooves are formed on the opposite surfaces of the two mortgage brackets 443. The arc-shaped grooves on the two mortgage brackets 443 form a detection hole, and the diameter of the detection hole is equal to the diameter of the qualified cable core after stranding;

[0046] At the top of the mortgage bracket 443 close to the bracket 41, a stabilizing bar 444 is fixedly connected, and the stabilizing bar 444 abuts against the cylinder body 421; when the diameter of the stranded cable core is too large, the mortgage bracket 443 is pushed by the stranded cable core, so that the mortgage bracket 443 squeezes the support spring 442. When the mortgage bracket 443 moves and squeezes the support spring 442, the mortgage bracket 443 drives the stabilizing bar 444 to move synchronously, so that the stabilizing bar 444 abutting against the cylinder body 421 provides stable support for the mortgage bracket 443.

[0047] On the cylinder body 421 close to the detection mechanism 44, an adjusting mechanism 45 for adjusting the air pressure in the cylinder body 421 is provided. The adjusting mechanism 45 includes an outer sliding plate 451, a moving block 452, a power plate 453 and an elastic block 454. Symmetrically arranged outer sliding plates 451 are fixedly installed on the side wall of the cylinder body 421. A moving block 452 is slidably installed between the two outer sliding plates 451. A number of 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 compacting wire passing device 4. The pressure relief pressure of the pressure relief valve 435 farther away from the axis of the compacting wire passing device 4 is smaller. One end of the stabilizing bar 444 close to the cylinder body 421 is fixedly connected to a power plate 453, and the power plate 453 abuts against the moving block 452. On the side of the power plate 453 away from the moving block 452, an elastic block 454 is fixedly connected, and the other side of the elastic block 454 abuts against the outer sliding plate 451;

[0048] The surface of the power plate 453 that abuts against the moving block 452 is provided with a wedge-shaped groove, and the wedge-shaped groove on the power plate 453 is used in cooperation with the wedge-shaped groove on the moving block 452; after the stranded cable core passes through the wire passing holes formed by a plurality of wire guiding wheels 425, the pressing frames 443 on both 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 relatively large, the cable core will push the pressing frame 443 to squeeze the support spring 442. The pressing 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 stuck in the wedge-shaped groove on the moving block 452, so that the power plate 453 drives the moving block 452 to move synchronously, thereby enabling other pressure relief valves 435 on the moving block 452 to communicate with the inside of the cylinder body 421, increasing the pressure relief pressure of the communicating pressure relief valves 435, increasing the pressure inside the cylinder body 421. The increase in the internal pressure of the cylinder body 421 will push the sliding block 422, the sliding sleeve 423, and the wire guiding wheel 425 towards the axis of the bracket 41, thereby reducing the diameter of the wire passing holes formed by the plurality of wire guiding wheels 425, thereby increasing the pressing force of the wire passing holes 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 a supporting force for the pressing frame 443 to ensure that the pressing frames 443 on both sides can always fit together. When the diameter of the stranded cable core is relatively large, it can accurately ensure that the cable core pushes the pressing frame 443 to move.

[0050] Elastic blocks 454 are embedded with balls closely against the side walls of the outer sliding plates 451. The balls reduce the friction between the elastic blocks 454 and the outer sliding plates 451, preventing the excessive friction between the elastic blocks 454 and the outer sliding plates 451 from affecting the sliding of the elastic blocks 454; the elastic extrusion force of the elastic blocks 454 pushes the power plate 453 and the moving block 452, making the moving block 452 fit tightly and sealingly with the cylinder body 421, and one pressure relief valve 435 on the moving block 452 communicates with the inside of the cylinder body 421.

[0051] Inside the power plate 453, the stabilizing bar 444, and the pressing frame 443 is provided with an air injection pipe 46. One end of the air injection pipe 46 inside the power plate 453 is communicated with the pressure relief valve 435 on the moving block 452, and one end of the air injection pipe 46 on the pressing frame 443 faces the surface of the cable core between the two pressing frames 443. When the stranded cable core passes through the wire passing holes formed by several wire passing wheels 425, the stranded cable core drives the wire passing wheels 425 to rotate. The rotating wire passing wheels 425 drive the sliding sleeve 423 and the guiding block inside the sliding sleeve 423 to rotate synchronously, causing the guiding block to slide in the reciprocating spiral groove on the rotating shaft 424. Thus, the guiding block pushes the rotating shaft 424 to move axially in a reciprocating manner. The reciprocating moving rotating shaft 424 drives the pressing block 432 to move synchronously, causing the pressing block 432 to squeeze the gas inside the two end square tubes 431. The gas inside the square tube 431 enters the cylinder body 421 through the one-way valve and the connecting pipe 433. The gas inside the cylinder body 421 increases, and the gas pressure increases. The gas inside the cylinder body 421 is discharged through the pressure relief valve 435 and the air injection pipe 46. The discharged gas is sprayed towards the stranded cable core through the end of the air injection pipe 46 to blow off the dust adhering to the cable core and prevent the dust adhered to the cable core from affecting subsequent processing.

[0052] The working principle of the second embodiment of the present invention is as follows:

[0053] Please refer to Figures 1 - 10 , after the stranded cable core passes through the wire passing holes formed by several wire passing wheels 425, the pressing frames 443 on both 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 larger, the cable core will push the pressing frame 443 to squeeze the support spring 442. The pressing 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 stuck in the wedge-shaped groove on the moving block 452, causing the power plate 453 to drive the moving block 452 to move synchronously. Thus, other pressure relief valves 435 on the moving block 452 are communicated with the inside of the cylinder body 421, increasing the pressure relief pressure of the communicated pressure relief valves 435, increasing the pressure inside the cylinder body 421. The increase in the internal pressure of the cylinder body 421 will push the sliding block 422, the sliding sleeve 423, and the wire passing wheels 425 towards the axis of the bracket 41, thereby reducing the diameter of the wire passing holes formed by several wire passing wheels 425, thereby increasing the pressing force of the wire passing holes on the stranded cable core and ensuring the diameter of the stranded cable core.

[0054] When the stranded cable core passes through the wire passing holes formed by several wire passing wheels 425, the stranded cable core drives the wire passing wheels 425 to rotate. The rotating wire passing wheels 425 drive the sliding sleeve 423 and the guiding block inside the sliding sleeve 423 to rotate synchronously, causing the guiding block to slide in the reciprocating spiral groove on the rotating shaft 424. As a result, the guiding block pushes the rotating shaft 424 to move axially in a reciprocating manner. The reciprocating moving rotating shaft 424 drives the extrusion block 432 to move synchronously, enabling the extrusion block 432 to extrude the gas in the two end square cylinders 431. The gas in the square cylinder 431 enters the cylinder body 421 through the one-way valve and the connecting pipe 433. The gas in the cylinder body 421 increases, and the gas pressure increases. The gas in the cylinder body 421 is discharged through the pressure relief valve 435 and the air spraying pipe 46. The discharged gas is sprayed towards the stranded cable core through the end of the air spraying pipe 46 to blow off the dust adhering to the cable core and prevent the dust adhered to the cable core from affecting the subsequent processing.

Claims

1. A polyethylene cable core stranding device, comprising a stable base (1), a power mechanism (2), a rotating disk (3), a compact wire passing device (4) and a control box (5), characterized in that: The wire pressing and passing device (4) includes a bracket (41) and a wire passing mechanism (42). The bracket (41) is fixedly installed on the stable base (1), and a plurality of wire passing mechanisms (42) are fixedly installed on the bracket (41). The wire passing mechanism (42) includes: A cylinder body (421), fixedly installed on the inner wall of the bracket (41); A sliding block (422), one end of which is slidably and sealedly installed in the cylinder body (421), and the other end is n-shaped and extends out of the cylinder body (421). The upper part of the sliding block (422) in the cylinder body (421) is filled with high-pressure gas; A sliding sleeve (423), passing through the n-shaped end of the sliding block (422); A wire passing wheel (425), fixedly sleeved on the sliding sleeve (423) and located in the middle of the n-shaped position of the sliding block (422). A plurality of the wire passing wheels (425) form a wire passing hole.

2. The polyethylene cable core stranding device according to claim 1, wherein: A rotating shaft (424) penetrates through the center of the sliding sleeve (423). A reciprocating spiral groove is provided on the rotating shaft (424). A guiding block is fixedly installed on the inner wall of the sliding sleeve (423), and the guiding block is slidably installed in the reciprocating spiral groove of the rotating shaft (424). Compensation mechanisms (43) for compensating the wear of the wire passing wheels (425) are provided at both ends of the rotating shaft (424). The compensation mechanisms (43) include: A square cylinder (431), fixedly installed on both sides of the sliding block (422); An extrusion block (432), fixedly sleeved on both ends of the rotating shaft (424) and slidably and sealedly installed in the square cylinder (431). The end of the square cylinder (431) is communicated with a connecting pipe (433) through a one-way valve. The other end of the connecting pipe (433) is communicated with the cylinder body (421). A connecting ring (434) is provided in the bracket (41), and the connecting ring (434) is used to communicate a plurality of cylinder bodies (421); An air replenishing valve (436), fixedly installed on the side wall of the square cylinder (431); A pressure relief valve (435), communicated with the cylinder body (421).

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

4. A polyethylene cable core stranding device according to claim 2, characterized in that: A pair of detection mechanisms (44) are fixedly installed on the side of the bracket (41) away from the rotating disc (3). The detection mechanisms (44) include: A fixing plate (441), fixedly installed on the side wall of the bracket (41); A support spring (442), one end of which is fixedly connected to the opposite side of the fixing plate (441); A mortgaging frame (443), fixedly connected to the other end of the support spring (442). Arc-shaped grooves are provided on the opposite surfaces of the two mortgaging frames (443). The arc-shaped grooves on the two mortgaging frames (443) form a detection hole, and the diameter of the detection hole is equal to the diameter of the qualified cable core after stranding.

5. The polyethylene cable core stranding device according to claim 4, characterized in that: A stabilizing bar (444) is fixedly connected to the top of the mortgaging frame (443) close to the bracket (41), and the stabilizing bar (444) abuts against the cylinder body (421).

6. The polyethylene cable core stranding device according to claim 5, characterized in that: An adjusting mechanism (45) for adjusting the air pressure inside the cylinder body (421) is provided on the cylinder body (421) of the close detection mechanism (44). The adjusting mechanism (45) includes: Two outer sliding plates (451), fixedly installed on the side wall of the cylinder body (421); A moving block (452), slidably installed between the two outer sliding plates (451). A number of pressure relief valves (435) are equidistantly installed on the moving block (452), and the pressure relief pressure of the pressure relief valve (435) farther away from the axis of the pressing wire-passing device (4) is smaller; A power plate (453), fixedly connected to one end of the stabilizing bar (444) close to the cylinder body (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), and the other side of the elastic block (454) is in close contact with the outer sliding plate (451).

7. A polyethylene cable core stranding device according to claim 6, characterized in that: A wedge-shaped groove is formed on the surface of the power plate (453) that abuts against the moving block (452), and the wedge-shaped groove on the power plate (453) and the wedge-shaped groove on the moving block (452) are used in cooperation.

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

9. A polyethylene cable core stranding device according to claim 7, characterized in that: A ball is embedded in the elastic block (454) that is in close contact with the side wall of the outer sliding plate (451). 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 in sealed fit with the cylinder body (421), and a pressure relief valve (435) on the moving block (452) is communicated with the inside of the cylinder body (421).

10. A polyethylene cable core stranding device according to claim 7, characterized in that: An air jet pipe (46) is provided inside the power plate (453), the stabilizing bar (444) and the mortgage frame (443). One end of the air jet pipe (46) in the power plate (453) is communicated with the pressure relief valve (435) on the moving block (452), and 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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