Armouring machine for low voltage cable production
Patent Information
- Application Number
- CN202611150165.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-31
- Publication Date
- 2026-09-25
AI Technical Summary
[0004]本申请提出了一种用于低压电缆生产的铠装机，具备减小钢丝磨损量的优点，用以解决钢丝磨损，导致电缆的铠装质量受影响的问题
本申请提供的一种用于低压电缆生产的铠装机，通过气泵与气孔的设置，低速工况下钢丝受走线分力主导，贴合二号孔内侧壁，气泵输送的压缩空气径向向外穿过气孔，并进入二号孔，之后，压缩空气冲击钢丝的内侧位置，减小钢丝与二号孔孔壁的接触正压力，缓解滑动磨损，使得电缆的铠装质量不易受影响。
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Figure CN122822508A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of cable armoring equipment technology, and more particularly to an armoring machine for low-voltage cable production. Background Technology
[0002] Low-voltage cables mainly refer to power cables with a rated voltage of 1kV and below. They are commonly used in building power distribution, factory power transmission, and other scenarios. In order to enhance the mechanical strength of low-voltage cables, armoring machines are now commonly used to armor the outer layer of the cables.
[0003] Some existing cable armoring machines work by redirecting the steel wire on the take-up reel through the orifice plate, and then winding the redirected steel wire around the cable surface to complete the cable armoring operation. However, due to the large contact pressure between the redirected steel wire and the orifice plate, the steel wire is prone to wear. When the worn steel wire is wound around the cable surface, its mechanical strength will be affected, thus affecting the quality of cable armoring. Summary of the Invention
[0004] This application proposes an armoring machine for low-voltage cable production, which has the advantage of reducing steel wire wear, thereby solving the problem that steel wire wear affects the armoring quality of the cable.
[0005] To achieve the above objectives, this application adopts the following technical solution: an armoring machine for low-voltage cable production, comprising: a workbench, a mounting base, a long cylinder, a gear ring, and a drive gear. A winding reel, a large reel, and a small reel are sequentially fixedly sleeved from left to right on the outer circumferential surface of the long cylinder, located on the mounting base opposite to the gear ring. A take-up reel is eccentrically and equidistantly mounted on the side of the winding reel opposite to the mounting base. Steel wire is wound onto the take-up reel. A first hole is equidistantly penetrating the interior of the large reel, and a second hole is equidistantly penetrating the interior of the small reel. A guide cylinder is fixedly installed on the right side of the workbench surface. The cable passes through the long cylinder and the guide cylinder in sequence. The steel wire passes through hole number one, hole number two and the guide cylinder in sequence. The steel wire is wound around the outer surface of the cable inside the guide cylinder. An air pump is fixedly installed on the side of the mounting base facing away from the small plate. The air pump's air delivery end extends into the inner cavity of the long cylinder. The interior of the long cylinder and the interior of the small plate share an air hole. The inner end of the air hole communicates with the inner cavity of the long cylinder, and the outer end of the air hole communicates with hole number two. The outer end of the air hole faces the inner arc surface of the steel wire in hole number two.
[0006] Furthermore, a mounting base is fixedly installed on the left side of the upper surface of the worktable. A long cylinder is rotatably installed inside the mounting base, with both ends of the long cylinder extending out of the mounting base. A toothed ring is fixedly sleeved on the outer circumferential surface of the left end of the long cylinder. A motor is fixedly installed inside the mounting base, and a power gear is fixedly installed at the end of the output shaft of the motor. The power gear and the toothed ring form a meshing connection. A support platform is fixedly installed in the middle of the upper surface of the worktable, and the arc-shaped concave surface on the upper side of the support platform forms a sliding contact with the outer circumferential surface of the small disk.
[0007] Furthermore, the second hole is a conical hole with its tip facing the large plate, and a threaded groove is formed on the hole wall of the second hole.
[0008] Furthermore, a sleeve is fixedly installed on the side of the small disc facing the guide cylinder and at the position corresponding to the No. 2 hole. The sleeve is set at an inclined angle. The sleeve is parallel to the steel wire passing through the No. 2 hole. A spring is provided in the inner cavity of the sleeve. The end of the spring facing the small disc is fixedly connected to the small disc. The steel wire passes through the spring and is located in the inner eccentric position of the inner ring of the spring.
[0009] Furthermore, the sleeve has equidistant chip removal holes circumferentially through its wall, and the right end of the long cylinder is on the same vertical plane as the sleeve.
[0010] Furthermore, a dial ring is slidably engaged within the inner cavity of the sleeve. The dial ring is located near the right end of the sleeve. The end of the spring facing away from the small disc is fixedly connected to the dial ring. The steel wire passes through the inner hole of the dial ring.
[0011] Furthermore, a corrugated component is fixedly installed at the middle position of the inner wall of the sleeve. The corrugated component is located outside the spring, and the inner surface of the corrugated component is an axially undulating arc surface.
[0012] Furthermore, the inner hole of the dial ring is eccentrically positioned inward, and the solid area of the dial ring is larger than the area of the inner hole.
[0013] Furthermore, both the large and small discs are made of 40Cr alloy steel, and both are integrally quenched and tempered. The inner walls of the first and second holes are subjected to high-frequency quenching and precision grinding and polishing. The sleeve is made of 45 steel, and the inner wall of the sleeve and the inner surface of the corrugated parts are integrally hard chrome plated and then polished. The spring is integrally rolled from 65Mn spring steel wire, and is subjected to quenching and tempering treatment. The surface of the spring is polished and blackened. The derailleur ring is integrally pressed and sintered using copper-based oil-containing powder metallurgy. The long cylinder is made of 20 seamless steel pipe. The winding wheel and the support platform are both made of HT200 gray cast iron. The outer layer of the guide cylinder is a steel shell, and the inner lining is ultra-high molecular weight polyethylene.
[0014] This application has the following beneficial effects: This application provides an armoring machine for low-voltage cable production. Through the setting of air pump and air holes, under low-speed conditions, the steel wire is dominated by the wire-running force and adheres to the inner wall of the second hole. The compressed air delivered by the air pump passes radially outward through the air holes and enters the second hole. Then, the compressed air impacts the inner side of the steel wire, reducing the contact normal pressure between the steel wire and the wall of the second hole, alleviating sliding wear, and making the armoring quality of the cable less susceptible to being affected.
[0015] With the sleeve and spring in place, the entire spring is fitted around the outside of the steel wire, and both ends of the spring are constrained. When the long cylinder rotates, the sleeve and spring revolve around the center of the long cylinder. Centrifugal force causes the free section in the middle of the spring to bend outward, and the inner ring of the spring presses tightly against the steel wire with a certain pressure. The inner ring of the spring becomes a follower scraper, scraping off any tiny abrasives or dirt that may be attached to the inner surface of the steel wire. This prevents the attachments from forming micro-bulges when the inner surface of the steel wire comes into contact with the cable, making the armor quality of the cable less susceptible to damage. At the same time, when the steel wire is being transported, friction will cause the spring to extend and retract slightly, thereby buffering the instantaneous tension impact and preventing uneven tightness of the steel wire wrapped around the cable, thus maintaining the armor quality of the cable. Attached Figure Description
[0016] 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.
[0017] This application can be more clearly understood with reference to the accompanying drawings and the following detailed description, wherein: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the engagement state between the power gear and the gear ring of the present invention; Figure 3 This is a schematic diagram showing the sleeve setting position of the present invention; Figure 4 This is a schematic diagram of the air pump and the long cylinder of the present invention in a coordinated state; Figure 5 This is a schematic diagram of the inner structure of the small disk and the sleeve of the present invention; Figure 6 This is a schematic diagram showing the relative positions of the spring and the corrugated component in this invention; Figure 7 This is a schematic diagram of the dial ring in Embodiment 4 of the present invention.
[0018] In the diagram: 1. Workbench; 2. Mounting base; 3. Long cylinder; 4. Gear ring; 5. Drive gear; 6. Winding reel; 7. Rewinding reel; 8. Steel wire; 9. Large reel; 10. Hole No. 1; 11. Small reel; 12. Hole No. 2; 13. Guide cylinder; 14. Cable; 15. Support platform; 16. Air pump; 17. Air hole; 18. Sleeve; 19. Spring; 20. Chip removal hole; 21. Dial ring; 22. Corrugated component. Detailed Implementation
[0019] 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.
[0020] Example 1: Please refer to Figures 1-6 The system includes a workbench 1. A mounting base 2 is bolted to the left side of the upper surface of the workbench 1. A long cylinder 3 is rotatably mounted inside the mounting base 2, with both ends extending out of the mounting base 2. A gear ring 4 is fixedly fitted onto the outer circumference of the left end of the long cylinder 3. A motor is fixedly mounted inside the mounting base 2, below the gear ring 4. A power gear 5 is fixedly mounted at the end of the motor's output shaft, meshing with the gear ring 4. A winding reel 6 is fixedly fitted onto the outer circumference of the long cylinder 3, opposite to the gear ring 4 on the mounting base 2. A take-up reel 7 is eccentrically and equidistantly mounted on the side of the winding reel 6 opposite to the mounting base 2, winding steel wire 8. A large disc 9 is fixedly fitted onto the outer circumference of the long cylinder 3, on the side of the winding reel 6 opposite to the mounting base 2. A hole 10 is equidistantly drilled through the interior of the large disc 9. A small disc 11 is fixedly fitted onto the outer circumference of the long cylinder 3, on the side of the large disc 9 opposite to the mounting base 2. The workbench 1 has two holes 12 that are equidistantly spaced around its circumference. A guide cylinder 13 is bolted to the right side of the upper surface of the workbench 1. The cable 14 passes through the long cylinder 3 and the guide cylinder 13 in sequence (the cable 14 is driven through the long cylinder 3 by an external mechanical transmission mechanism). The steel wire 8 passes through the first hole 10, the second hole 12 and the guide cylinder 13 in sequence. Inside the guide cylinder 13, the steel wire 8 is wound around the outer surface of the cable 14. A support is bolted to the middle of the upper surface of the workbench 1. Platform 15, the upper arc-shaped concave surface of the support platform 15 forms a sliding contact with the outer circumferential surface of the small plate 11, the mounting base 2 is fixedly installed on the side facing away from the small plate 11, the air pump 16 extends into the inner cavity of the long cylinder 3, the inside of the long cylinder 3 and the inside of the small plate 11 are provided with air holes 17, the inner end of the air hole 17 is connected to the inner cavity of the long cylinder 3, the outer end of the air hole 17 is connected to the second hole 12, and the outer end of the air hole 17 faces the inner arc surface of the steel wire 8 in the second hole 12.
[0021] During use, the cable 14 is passed sequentially through the long cylinder 3 and the guide cylinder 13, and then moved to the right, allowing the steel wire 8 to pass sequentially through the first hole 10, the second hole 12, and the guide cylinder 13, so that the steel wire 8 contacts the outer surface of the cable 14. Then, the motor drives the power gear 5 to rotate at a low speed, causing the gear ring 4 to drive the long cylinder 3, the winding reel 6, the large reel 9, and the small reel 11 to rotate, so that the steel wire 8 in contact with the outer surface of the cable 14 is wound around the cable 14. During this process, the air pump 16 is run, so that the outside air is compressed by the air pump 16 and input into the inner cavity of the long cylinder 3, so that some air is blown radially into the second hole 12 through the air hole 17 and contacts the inner arc surface of the steel wire 8 in the second hole 12, so that the steel wire 8 is subjected to the radial external force of the gas, thereby reducing the contact normal pressure between the steel wire 8 and the hole wall of the second hole 12, alleviating sliding wear, and making the armor quality of the cable 14 less affected.
[0022] Example 2: Please refer to Figures 1-6 Hole 12 is a conical hole with the tip of the conical hole facing the large plate 9. Threaded grooves are provided on the hole wall of hole 12.
[0023] During the process of compressed air being radially blown into the second hole 12 through the air hole 17, the compressed air enters the thread groove to form a spiral airflow. The spiral airflow pushes the abrasive (impurities attached to the surface of the steel wire 8 and debris generated by friction) along the direction of travel of the steel wire 8, preventing the debris from getting stuck between the contact surface of the second hole 12 and the steel wire 8 and forming abrasion, thereby reducing the wear of the steel wire 8.
[0024] Please see Figures 1-6 A sleeve 18 is fixedly installed on the side of the small plate 11 facing the guide cylinder 13 and at the position corresponding to the second hole 12. The sleeve 18 is set at an inclined angle. The sleeve 18 is parallel to the steel wire 8 passing through the second hole 12. A spring 19 is provided in the inner cavity of the sleeve 18. The end of the spring 19 facing the small plate 11 is fixedly connected to the small plate 11. The steel wire 8 passes through the spring 19 and is located in the inner eccentric position of the inner ring of the spring 19.
[0025] The entire spring 19 is sleeved on the outside of the steel wire 8, and one end of the spring 19 is fixed. When the long cylinder 3 rotates, the sleeve 18 and the spring 19 revolve around the center of the long cylinder 3. The low-speed centrifugal force causes the free section of the spring 19 to bend outward, and the inner ring of the spring 19 presses against the inner side of the steel wire 8 with a certain pressure. The inner ring of the spring 19 becomes a follower scraper, scraping off the tiny abrasives or dirt that may be attached to the inner surface of the steel wire 8, so that when the inner surface of the steel wire 8 comes into contact with the cable 14, the attached material forms a micro-bulge between the two, making the armor quality of the cable 14 less likely to be affected. Meanwhile, as the steel wire 8 is conveyed, it comes into contact with the inner coil of the spring 19, and the friction causes the spring 19 to extend and retract slightly. (During the contact between the steel wire 8 and the spring 19, the continuous conveying of the steel wire 8 causes the spring 19 to extend through friction. Because the contact surface between the steel wire 8 and the spring 19 cannot maintain an ideal environment, there are slight unevennesses on both surfaces, causing the friction to fluctuate. This results in the spring 19 constantly extending while experiencing small intermittent contractions.) This buffers the instantaneous tension impact and prevents the steel wire 8 from becoming too loose or too tight around the cable 14. The tension of the steel wire 8 increases suddenly due to winding resistance, cable 14 dragging, etc., and tends to be tightened, which increases the axial friction between the steel wire 8 and the spring 19, and further stretches the spring 19. When the tension of the steel wire 8 decreases suddenly, the steel wire 8 tends to relax, which reduces the axial friction between the steel wire 8 and the spring 19. The spring 19 rebounds by its own elastic force. Through this action, each tension impact of the steel wire 8 is converted into an elastic deformation of the spring 19, the peaks are flattened and the troughs are filled, thus providing buffer protection. In addition, the spiral airflow in the second hole 12 will enter the sleeve 18, causing the airflow to flow in the spiral gap of the spring 19 and generate axial buffering force. This, combined with the expansion and contraction buffering of the spring 19, increases the effect of smoothing tension fluctuations. (The continuous airflow entering the sleeve 18 will pass through all the spiral gaps of the spring 19 inside the sleeve 18. The spring 19 is sleeved outside the steel wire 8. The spiral coils and the inner wall of the spring 19 and the outer wall of the steel wire 8 form a variable cross-section airflow channel. When the steel wire 8 causes the spring 19 to expand and contract due to tension fluctuations through friction: when the spring 19 is compressed - the coil pitch decreases - the axial gap of the spiral gap narrows - the airflow area decreases - the flow resistance increases. When the spring 19 partially rebounds - the pitch increases - the gap widens - the resistance decreases. Through the above actions, the mechanical displacement of the spring 19 is converted into a change in the area of the airflow channel.) When a continuous airflow passes through the aforementioned variable gap, two direct effects occur: 1. The airflow flows from the high-pressure area (left end of sleeve 18) to the low-pressure area (right end of sleeve 18). As it passes through the spiral gap, the pressure gradually decreases. The left and right ends of each coil of spring 19 experience different air pressures, and the sum of their axial components forms a net axial aerodynamic force. 2. When spring 19 partially rebounds (the gap narrows), the airflow is obstructed, the pressure on the left increases, and the aerodynamic force increases, moving to the right to resist the rebound. When spring 19 is further stretched (the gap widens), the airflow becomes unobstructed, the pressure on the left decreases, and the aerodynamic force decreases. This is equivalent to a decrease in the aerodynamic force to the right, resulting in a relative increase in pressure on the left compared to the right. The large airflow creates a net aerodynamic force to the left, resisting stretching. Through this action, additional aerodynamic buffering is added (when the gap changes, the gas flow cannot respond instantaneously, resulting in pressure hysteresis, which absorbs vibration energy and provides strong damping that a purely mechanical spring 19 does not possess), absorbing and eliminating the high-frequency vibration of the tension of the steel wire 8 (during the process of releasing, piercing, and winding the steel wire 8 onto the cable 14, the tension will fluctuate continuously due to friction, centrifugal force, and the drag of the cable 14, generating high-frequency micro-vibrations. Through the aforementioned aerodynamic buffering, the airflow forms high resistance in the narrowing spiral gap and the resistance drops sharply when it widens. This aerodynamic damping response is extremely fast and can absorb high-frequency micro-vibrations like a shock absorber). The purely mechanical spring 19 has a natural frequency. If the frequency of tension fluctuation is close, it will resonate, causing the amplitude to amplify, which will worsen the situation. The viscous damping generated by the airflow passing through the gap of the spring 19 is an energy dissipation type effect. It can convert the resonance energy into heat and dissipate it with the airflow, thus destroying the resonance condition and preventing the amplitude from increasing. In addition, the above-mentioned airflow buffer and the extension buffer of spring 19 are superimposed to increase stiffness and increase damping, thereby preventing the steel wire 8 from being loosened or pulled suddenly, avoiding entanglement defects and affecting the armor quality of cable 14.
[0026] Please see Figures 1-6 The sleeve 18 has chip removal holes 20 that are equidistantly opened around its circumference, and the right end of the long cylinder 3 is on the same vertical plane as the sleeve 18.
[0027] By setting the chip removal hole 20, the impurities scraped off by the spring 19 can be directly discharged from the sleeve 18 through the chip removal hole 20, avoiding the impurities from contacting the cable 14 after being discharged from the right end of the sleeve 18, so that the armor quality of the cable 14 is not easily affected.
[0028] Example 3: Please refer to Figures 1-6 The inner cavity of the sleeve 18 is slidably engaged with the dial ring 21, which is close to the right end of the sleeve 18. The end of the spring 19 facing away from the small plate 11 is fixedly connected to the dial ring 21, and the steel wire 8 passes through the inner hole of the dial ring 21.
[0029] The dial ring 21 moves back and forth slightly in accordance with the extension and retraction of the spring 19, acting as a chip barrier to prevent impurities inside the sleeve 18 from flowing out from the right port and to prevent impurities from mixing into the armor layer. At the same time, the reciprocating sliding of the dial ring 21 continuously cleans the accumulated debris on the inner wall of the sleeve 18 along its moving path and unblocks the chip discharge hole 20 along its moving path to prevent the channel from becoming blocked. In addition, the dial ring 21 limits the maximum extension and retraction of the spring 19 to prevent the spring 19 from being overstretched and permanently deformed.
[0030] Please see Figures 1-6 A corrugated component 22 is fixedly installed in the middle of the inner wall of the sleeve 18. The corrugated component 22 is located outside the spring 19, and the inner surface of the corrugated component 22 is an axially undulating arc surface.
[0031] When spring 19 is subjected to low-speed centrifugal force, its middle section deforms outward, causing the inner ring of spring 19 to contact the inner side of steel wire 8, while the outer ring of spring 19 contacts the arc surface of corrugated component 22. Due to the slight expansion and contraction of spring 19, part of the outer ring of spring 19 moves axially back and forth on the arc surface of corrugated component 22. When the outer ring of spring 19 contacts the highest point of the arc surface of corrugated component 22, it moves inward, causing the corresponding inner ring of spring 19 to move away from the inner side of steel wire 8. When the outer ring of spring 19 contacts the lowest point of the arc surface of corrugated component 22, it moves outward, causing the corresponding inner ring of spring 19 to contact the inner side of steel wire 8 again. This process repeats, causing the partial spring ring of spring 19 to apply a slight impact to the inner surface of steel wire 8, thereby peeling off stubborn adhering impurities that could not be removed by airflow blowing and spring 19 scraping on the inner surface of steel wire 8, preventing impurities from mixing into the armor layer. At the same time, the aforementioned radial vibration creates a momentary gap, making it easier for debris to be carried away by the axial airflow, reducing the continuous squeezing and scraping of particles on the surface of the steel wire 8, and reducing the amount of wear on the steel wire 8.
[0032] Please see Figures 1-6 Both the large plate 9 and the small plate 11 are made of 40Cr alloy steel and are tempered as a whole. The inner walls of the first hole 10 and the second hole 12 are high-frequency quenched and finely ground and polished. The sleeve 18 is made of 45 steel. The inner wall of the sleeve 18 and the inner side of the corrugated part 22 are plated with hard chrome and then polished. The spring 19 is made of 65Mn spring steel wire rolled in one piece, quenched and tempered, and the surface is polished and blackened. The dial ring 21 is made of copper-based oil-containing powder metallurgy (tin bronze system) integrally pressed and sintered. The long cylinder 3 is made of 20 seamless steel pipe. The winding wheel 6 and the support platform 15 are both made of HT200 gray cast iron. The outer layer of the guide cylinder 13 is a steel shell, and the inner lining is ultra-high molecular weight polyethylene (UHMWPE).
[0033] The setting of hole 10 and hole 12 makes the hole wall smooth, the spiral airflow resistance small, and the wear debris not easy to stick to the dead corner at the bottom of the groove. The inner wall of the sleeve 18 and the inner surface of the corrugated part 22 are both smooth and have low adhesion, so zinc and iron filings are not easy to stick to them. When the centrifugal force is used, they will go to the chip discharge hole 20 and will not accumulate in the corrugated part 22 and get stuck. 65Mn has stable elasticity and good fatigue resistance. It will not loosen or fail even with long-term small expansion and contraction. The friction damping output is always uniform, and the tension stabilization effect can be maintained for a long time. Combined with the polished surface, the risk of scratches can be minimized, while the blackening treatment prevents rust and avoids rust chips falling off and contaminating the steel wire. Copper-based oil-impregnated powder metallurgy (tin bronze series) has its own solid lubrication, and it slides smoothly and without jamming in the sleeve 18. This allows the spring 19 to be driven with only a small extension force, which is perfectly suitable for small-amplitude reciprocating working conditions. The material is softer than the spring 19 and the sleeve 18. Wear will wear out the ring 21 itself first, without scratching the inner wall of the sleeve 18 and the end of the spring 19. The maintenance and replacement cost is low. The dense structure has a good chip-blocking effect, and the chips are not easy to leak through the mating gap, nor are they easy to stick to zinc chips. Gray cast iron has good shock absorption properties, resulting in less vibration of the whole machine when rotating at low speed. The steel wire layer produced by the armor is more uniform in tightness. Seamless steel pipe has good air tightness and smooth inner wall, and will not shed rust residue to contaminate the cable. The inner lining of the guide cylinder 13 is self-lubricating and has a soft texture. It will not scratch the inner lining of the cable 14, nor will it wear down the surface of the steel wire 8 that has just been armored. At the same time, it is wear-resistant and durable, and the outer diameter shaping effect is stable.
[0034] Example 4: Please refer to Figures 1-7 The inner hole of the dial ring 21 is eccentrically set inward, and the solid area of the dial ring 21 is larger than the area of the inner hole.
[0035] The small-amplitude axial reciprocating movement of the aforementioned dial ring 21 will generate a micro-piston effect in the sleeve 18, which will cause the air pressure in the sleeve 18 to pulsate periodically and be transmitted in reverse to the right port of the second hole 12, causing the spiral airflow in the thread groove to fluctuate in speed, flushing away the accumulated chips stuck in the dead corner of the thread groove and improving the chip removal effect of the airflow.
Claims
1. An armoring machine for low-voltage cable production, comprising: The workbench (1), mounting base (2), long cylinder (3), gear ring (4), and power gear (5) are arranged in a series of components. From left to right, a winding disc (6), a large disc (9), and a small disc (11) are fixedly fitted onto the outer circumference of the long cylinder (3) and on the mounting base (2) facing away from the gear ring (4). A winding wheel (7) is eccentrically mounted on the side of the winding disc (6) facing away from the mounting base (2), and a steel wire (8) is wound onto the winding wheel (7). A first hole (10) is equidistantly opened in the interior of the large disc (9), and a second hole (12) is equidistantly opened in the interior of the small disc (11). A guide cylinder (13) is fixedly installed on the right side of the upper surface of the workbench (1). The cable (14) passes through the long cylinder in sequence. The cylinder (3) and the guide cylinder (13) are connected. The steel wire (8) passes through the first hole (10), the second hole (12) and the guide cylinder (13) in sequence. The steel wire (8) is wound around the outer surface of the cable (14) inside the guide cylinder (13). The characteristic is that the mounting base (2) is fixedly installed with an air pump (16) on the side facing away from the small plate (11). The air pump (16) extends into the inner cavity of the long cylinder (3). The interior of the long cylinder (3) and the interior of the small plate (11) are provided with air holes (17). The inner end of the air hole (17) is connected to the inner cavity of the long cylinder (3). The outer end of the air hole (17) is connected to the second hole (12). The outer end of the air hole (17) faces the inner arc surface of the steel wire (8) in the second hole (12).
2. The armoring machine for low-voltage cable production according to claim 1, characterized in that, A mounting base (2) is fixedly installed on the left side of the upper surface of the workbench (1). A long cylinder (3) is rotatably installed inside the mounting base (2). Both ends of the long cylinder (3) extend out of the mounting base (2). A toothed ring (4) is fixedly sleeved on the outer circumference of the left end of the long cylinder (3). A motor is fixedly installed inside the mounting base (2). A power gear (5) is fixedly installed at the end of the output shaft of the motor. The power gear (5) and the toothed ring (4) form a meshing connection. A support platform (15) is fixedly installed in the middle of the upper surface of the workbench (1). The arc-shaped concave surface on the upper side of the support platform (15) forms a sliding contact with the outer circumference of the small plate (11).
3. The armoring machine for low-voltage cable production according to claim 1, characterized in that, The second hole (12) is a conical hole with the tip of the conical hole facing the large plate (9). The hole wall of the second hole (12) is provided with a threaded groove.
4. The armoring machine for low-voltage cable production according to claim 1, characterized in that, A sleeve (18) is fixedly installed on the side of the small disc (11) facing the guide cylinder (13) and at the position corresponding to the second hole (12). The sleeve (18) is set at an inclined angle. The sleeve (18) is parallel to the steel wire (8) passing through the second hole (12). A spring (19) is provided in the inner cavity of the sleeve (18). One end of the spring (19) facing the small disc (11) is fixedly connected to the small disc (11). The steel wire (8) passes through the spring (19) and is located in the inner eccentric position of the inner ring of the spring (19).
5. An armoring machine for low-voltage cable production according to claim 4, characterized in that, The sleeve (18) has chip removal holes (20) that are equidistantly spaced around its circumference, and the right end of the long cylinder (3) is on the same vertical plane as the sleeve (18).
6. An armoring machine for low-voltage cable production according to claim 5, characterized in that, The inner cavity of the sleeve (18) is slidably engaged with a dial ring (21), the dial ring (21) is close to the right port of the sleeve (18), the end of the spring (19) facing away from the small plate (11) is fixedly connected to the dial ring (21), and the steel wire (8) passes through the inner hole of the dial ring (21).
7. An armoring machine for low-voltage cable production according to claim 6, characterized in that, A corrugated part (22) is fixedly installed in the middle of the inner wall of the sleeve (18). The corrugated part (22) is located outside the spring (19). The inner side of the corrugated part (22) is an axially undulating arc surface.
8. An armoring machine for low-voltage cable production according to claim 6, characterized in that, The inner hole of the dial ring (21) is eccentrically set inward, and the solid area of the dial ring (21) is larger than the area of the inner hole.
9. An armoring machine for low-voltage cable production according to claim 7, characterized in that, The large plate (9) and the small plate (11) are both made of 40Cr alloy steel. The large plate (9) and the small plate (11) are tempered as a whole. The inner walls of the first hole (10) and the second hole (12) are both subjected to high-frequency quenching and fine grinding and polishing. The sleeve (18) is made of 45 steel. The inner wall of the sleeve (18) and the inner side of the corrugated part (22) are both plated with hard chrome and then polished. The spring (19) is made of 65Mn spring steel wire rolled in one piece. The spring (19) is quenched and tempered. The surface of the spring (19) is polished and blackened. The dial ring (21) is made of copper-based oil-containing powder metallurgy integral pressing and sintering. The long cylinder (3) is made of 20 seamless steel pipe. The winding wheel (6) and the support platform (15) are both made of HT200 gray cast iron. The outer layer of the guide cylinder (13) is a steel shell and the inner lining is ultra-high molecular weight polyethylene.