Automatic guide assembly of cabling machine
By using an air spring and air pump system in the cable forming machine, combined with a pressure sensor and electric slide rail, the problems of fatigue and inflexibility of tension adjustment mechanisms in the prior art have been solved, realizing dynamic balance of cable tension and improving the versatility of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 兴胜山鹰线缆有限公司
- Filing Date
- 2025-06-05
- Publication Date
- 2026-05-26
AI Technical Summary
The tension adjustment mechanism of existing cabling machines relies on elastic elements, which are prone to fatigue and cannot dynamically respond to the instantaneous difference between the cable conveying rate and the cabling stranding rate, resulting in uneven stranding or core breakage. Furthermore, it lacks flexible adjustment capabilities, affecting the versatility of the equipment.
An air spring and air pump are used in conjunction with a three-way valve. The cable pressure is monitored in real time by a pressure sensor. The movement of the electric slide rail adjustment bracket is controlled by a controller. The dynamic balance of cable tension is achieved by adjusting the gas pressure, and friction is reduced by rollers.
It achieves stable and flexible adjustment of cable tension, extends equipment life, and improves cabling efficiency and equipment versatility.
Smart Images
Figure CN224287851U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable manufacturing equipment technology, and in particular to an automatic guide component for a cable forming machine. Background Technology
[0002] As the core carrier of power transmission and information exchange, cables are typically composed of multiple insulated cores bonded together through processes such as stranding and sheathing. Cable forming, a crucial step in cable manufacturing, requires stranding multiple cores into a single unit according to a specific pitch and arrangement. Maintaining appropriate cable tension is paramount during this process. Insufficient tension can lead to loose cores and uneven stranding, while excessive tension may cause insulation damage or core deformation. Therefore, cable forming equipment must be equipped with a reliable tension adjustment mechanism to ensure smooth cable transport under constant tension.
[0003] In the prior art, utility model patent CN205881571U discloses an automatic tensioning device for a cable-forming machine. This device uses a helical torsion spring between the upper and lower guide arms, utilizing the spring's elastic restoring force to apply radial thrust to the passing cable, thus achieving automatic tensioning as the cable core passes through the guide assembly. While this structure simplifies the mechanical adjustment process, its core reliance on the physical properties of elastic elements for tension control has inherent drawbacks: First, the torsion spring is prone to elastic fatigue under long-term cyclic stress, leading to a gradual decrease in tension output and affecting the equipment's lifespan. Second, the device cannot dynamically respond to the instantaneous difference between the cable conveying rate and the cable stranding rate. When these rates are mismatched, the cable is prone to periodic loosening or overtightening, causing stranding pitch fluctuations or even core breakage. Furthermore, the torsion spring's elastic coefficient and deformation range are fixed, only adapting to cables with a limited diameter range. It lacks flexible adjustment capabilities when dealing with different product specifications or process parameter adjustments, limiting the equipment's versatility. Utility Model Content
[0004] To overcome the drawbacks of elastic fatigue and poor dynamic adjustment, this invention provides an automatic guiding component for a cable-making machine, aiming to solve the aforementioned shortcomings.
[0005] An automatic guiding assembly for a cable-forming machine includes a base and a connecting frame. A drive assembly for cable forming is mounted at the rear end of the base. A fixed frame is connected to the front end of the base. A controller is mounted in the middle of the base. A vertically symmetrical electric slide rail is mounted on the left side of the fixed frame. One end of the connecting frame is slidably connected to the electric slide rail, which drives the connecting frame to move up and down. The electric slide rail is wired to the controller. The other end of the connecting frame is connected to a mounting frame. Contact plates are slidably connected at both the upper and lower ends of the mounting frame. A pressure sensor is mounted on the contact plate, which is pressed against the inner side of the mounting frame. The pressure sensor is wired to the controller. An elastic component is connected to both the fixed frame and the mounting frame. The elastic component is used to adjust the distance between the contact plate and the mounting frame and to buffer the pressure of the contact plate being pressed. The contact plate is provided with a protective component for contacting the cable.
[0006] Optionally, the elastic component includes a second air supply pipe. An air pump is installed on the right side of the fixing frame. The air pump is wired to the controller. Both ends of the air pump are connected to first air supply pipes. The bottom first air supply pipe passes through the base. Three-way valves are installed on the opposite sides of the two mounting frames. The two first air supply pipes are respectively connected to the two three-way valves. An elastic tube is provided at the connection between the first air supply pipe and the three-way valve. Air springs are installed at both the top and bottom of the mounting frame. One end of the second air supply pipe is connected to the three-way valve. The other end of the second air supply pipe passes around the mounting frame and passes through the mounting frame at a symmetrical position to the three-way valve, connecting to the air spring. Another air spring inside the mounting frame is connected to the three-way valve. The air spring is in a pressing fit with the contact plate.
[0007] Optionally, the protective assembly includes connecting plates connected to the left and right ends of the contact plate, both located on the opposite side of the contact plate and the pressure sensor. A roller is rotatably connected between the two connecting plates, and the roller is in contact with the cable.
[0008] Optionally, a protective pad is fitted onto the roller.
[0009] Optionally, baffles are connected to both the left and right ends of the front and rear sides of the mounting frame, and the baffles are used to cover the connecting plate.
[0010] Optionally, a stabilizing frame is connected to the top of the fixed frame, and the first air supply pipe connected to the top of the air pump passes through the stabilizing frame.
[0011] Optionally, a number of telescopic pads are provided on the left side of the fixed frame, and the two ends of the telescopic pads are respectively connected to the connecting frame and the fixed frame, and the telescopic pads cover the electric slide rail.
[0012] Optionally, the three-way valve is wired to the controller, and the controller controls the airflow delivery ratio of the two outlets of the three-way valve. The protective pad is provided with transverse stripes.
[0013] Compared with the prior art, the beneficial effects of this utility model are:
[0014] 1. By using air springs instead of traditional torsion springs, the compressibility of gas is used to provide elastic support. Moreover, the air pump and three-way valve can replenish gas or adjust the pressure in real time to ensure stable elastic performance, thereby extending the overall service life of the device.
[0015] 2. By monitoring the pressure changes of the cable on the rollers in real time through pressure sensors, and combining the precise control of the electric slide rail by the controller, the connecting frame is driven to move up and down, realizing the dynamic balance of cable tension and having a larger adjustment range. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0017] Figure 2 This is a schematic diagram of the installation structure of the electric slide rail and connecting frame of this utility model.
[0018] Figure 3 This is a cross-sectional view showing the connection relationship between the pressure sensor and the contact plate of this utility model.
[0019] Figure 4 This is a schematic diagram of the installation structure of the air pump and the first air delivery pipe of this utility model.
[0020] Explanation of reference numerals in the attached drawings: 1_base, 2_drive assembly, 3_fixed frame, 4_controller, 5_electric slide rail, 6_connecting frame, 7_mounting outer frame, 8_pressure sensor, 9_contact plate, 10_air pump, 11_first air supply pipe, 12_elastic tube, 13_three-way valve, 14_second air supply pipe, 15_air spring, 16_connecting plate, 17_roller, 18_protective pad, 19_baffle, 20_stabilizing frame, 21_telescopic pad. Detailed Implementation
[0021] The following description is only a preferred embodiment of the present invention and does not limit the scope of protection of the present invention.
[0022] Example: An automatic guidance component for a cable-making machine, such as Figures 1-4As shown, the system includes a base 1, a drive assembly 2, a mounting bracket 3, a controller 4, an electric slide rail 5, a connecting bracket 6, a mounting frame 7, a pressure sensor 8, a contact plate 9, an elastic component, and a protective component. The drive assembly 2 for cabling is mounted at the rear end of the base 1. The mounting bracket 3 is fixedly connected to the front end of the base 1. The controller 4 is mounted in the middle of the base 1. Symmetrically arranged electric slide rails 5 are mounted on the left side of the mounting bracket 3. One end of the connecting bracket 6 is slidably connected to the electric slide rail 5. The electric slide rail 5 drives the connecting bracket 6 to move up and down. The electric slide rail 5 is wiredly connected to the controller 4. 6. The other end is fixedly connected to the mounting frame 7. The upper and lower ends of the mounting frame 7 are slidably connected to the contact plates 9. The contact plates 9 that are pressed against the cable are equipped with pressure sensors 8. The pressure sensors 8 are pressed against the inner side of the mounting frame 7. The pressure sensors 8 are wired to the controller 4. The pressure sensors 8 are set with a safety threshold range. The fixing frame 3 and the mounting frame 7 are connected together by an elastic component. The elastic component is used to adjust the distance between the contact plates 9 and the mounting frame 7 and to buffer the pressure of the contact plates 9 being pressed. The contact plates 9 are equipped with protective components for contacting the cable.
[0023] like Figures 2-4 As shown, the elastic component includes an air pump 10, a first air supply pipe 11, an elastic tube 12, a three-way valve 13, a second air supply pipe 14, and an air spring 15. The air pump 10 is installed on the right side of the mounting bracket 3. The air pump 10 is wired to the controller 4. The top and bottom ends of the air pump 10 are connected to the first air supply pipe 11. The bottom first air supply pipe 11 passes through the base 1. Three-way valves 13 are installed on the opposite sides of the two mounting frames 7. The two first air supply pipes 11 are respectively connected to the two three-way valves 13, and the connection between the first air supply pipe 11 and the three-way valve 13 is as follows: An elastic tube 12 is provided, and a three-way valve 13 is wired to a controller 4. The controller 4 controls the airflow ratio of the two outlets of the three-way valve 13. Air springs 15 are installed at both the top and bottom of the mounting frame 7. One end of the second air supply pipe 14 is connected to the three-way valve 13, and the other end of the second air supply pipe 14 passes around the mounting frame 7 and is symmetrical to the three-way valve 13, passing through the mounting frame 7 and connecting to the air spring 15. Another air spring 15 inside the mounting frame 7 is connected to the three-way valve 13. The air spring 15 is pressed and engaged with the contact plate 9.
[0024] like Figure 3 As shown, the protective assembly includes a connecting plate 16 and a roller 17. The connecting plate 16 is connected to the left and right ends of the contact plate 9, and is located on the side opposite to the pressure sensor 8. The roller 17 is rotatably connected between the two connecting plates 16. The roller 17 contacts the cable. The roller 17 significantly reduces the frictional resistance between the cable and the guide assembly, avoids scratching the insulation layer, and at the same time reduces the driving energy consumption and improves the cabling efficiency by rolling.
[0025] like Figure 2As shown, it also includes a protective pad 18. The roller 17 is fitted with a protective pad 18. The surface of the protective pad 18 is designed with horizontal stripes to increase the friction with the cable contact surface and prevent the cable from directly contacting the roller 17 and causing surface indentations. The horizontal stripes help the roller 17 rotate smoothly with the cable, taking into account both anti-slip and buffering functions.
[0026] like Figure 2 As shown, it also includes baffles 19. Baffles 19 are connected to the left and right ends of the front and rear sides of the mounting frame 7. The baffles 19 are used to shield the connecting plate 16 to prevent the thin cable from deviating from the predetermined path due to vibration or getting stuck in the gap between the roller 17 and the contact plate 9, so as to ensure the continuous and stable cabling process and reduce the risk of core breakage.
[0027] like Figure 2 As shown, it also includes a stabilizer 20. The top of the fixed frame 3 is connected to the stabilizer 20. The first air supply pipe 11 connected to the top of the air pump 10 passes through the stabilizer 20 to ensure the airflow stability from the air pump 10 to the air spring 15.
[0028] like Figure 1 As shown, it also includes telescopic pads 21. Four telescopic pads 21 are provided on the left side of the fixed frame 3. Each telescopic pad 21 is connected to the connecting frame 6 and the fixed frame 3 at both ends. The telescopic pads 21 move up and down synchronously with the connecting frame 6, covering the exposed part of the electric slide rail 5, dynamically sealing the slide rail movement gap, preventing dust and oil stains from entering the slide rail, reducing the mechanical jamming failure rate, and improving the cleanliness of the equipment appearance.
[0029] Before the cabling operation begins, the operator starts the air pump 10 via the controller 4. The air pump 10 injects gas into the air spring 15 through the first air supply pipe 11, inflating it to a preset elastic state. After the cable passes between the symmetrically arranged mounting frames 7, it enters the drive assembly 2 for winding. When the cable passes through the mounting frames 7, its surface contacts the protective pad 18 fitted on the outer edge of the roller 17. The transverse stripes on the surface of the protective pad 18 assist the roller 17 in rotating freely with the cable through rolling friction, significantly reducing sliding friction resistance. At this time, if the cable feed rate matches the cabling rate, the cable tension remains stable; if the rates are mismatched, the cable will become slack or taut, triggering subsequent dynamic adjustment actions.
[0030] When the top cable becomes taut due to the transmission rate lagging behind the cabling rate, the cable presses down on roller 17, forcing contact plate 9 to move downwards and compress the air spring 15 in contact with it. Pressure sensor 8 monitors the pressure on contact plate 9 in real time, and when the detected value exceeds a preset upper limit threshold, it immediately sends a signal to controller 4. Controller 4 then activates electric slide rail 5, driving connecting frame 6 to slide downwards along the slide rail, shortening the distance between roller 17 and drive assembly 2. This action increases the bending angle of the cable as it passes through roller 17, thereby reducing the radial pressure of the cable on roller 17. At the same time, elastic tube 12 is stretched as connecting frame 6 moves downwards. Elastic tube 12 has a corrugated structure and expands and contracts with the movement of connecting frame 6, maintaining the air circuit connection seal. When the detected value of pressure sensor 8 falls back to the middle value of the threshold, controller 4 closes electric slide rail 5, and the system returns to a balanced state.
[0031] If the top cable becomes slack due to excessive transmission speed, the contact pressure between the cable and roller 17 will only be its own weight. When the pressure sensor 8 detects a value below the preset lower threshold, it will trigger the controller 4 to start the electric slide rail 5. At this time, the electric slide rail 5 drives the connecting frame 6 to move upward, increasing the distance between the contact plate 9 and the drive assembly 2, thereby increasing the tension of the cable by lifting it. During this process, the elastic tube 12 is compressed due to the upward movement of the connecting frame 6, but the air circuit seal is still maintained. When the tension returns to the midpoint of the threshold, the electric slide rail 5 automatically stops, completing the slack compensation.
[0032] Because the cable only compresses the upper or lower roller 17 on one side, the pressure on the upper and lower air springs 15 differs. At this time, the three-way valve 13 dynamically adjusts the airflow distribution ratio of the two second air supply pipes 14 according to the controller 4's instructions, making the pressure on both air springs 15 tend to be balanced. For cables of different diameters, operators can adjust the base inflation pressure of the air springs 15 using the air pump 10 to ensure that their elasticity range matches the cable specifications. For example, thicker cables require increased inflation pressure to provide greater support, while thinner cables require reduced pressure to avoid over-compression.
[0033] During the up-and-down movement of the connecting frame 6, the telescopic pads 21 connected to both ends of the frame extend or retract synchronously, always covering the exposed part of the electric slide rail 5 to prevent foreign objects from entering. The stabilizing frame 20 provides rigid support for the first air supply pipe 11 at the top, preventing it from sagging or swaying due to gravity and affecting the stability of the air path. The baffles 19 are symmetrically arranged on the front and rear sides of the mounting frame 7 to limit the lateral deviation of the cable and prevent thin cables from slipping into the gap between the roller 17 and the contact plate 9, ensuring a safe and reliable guiding process.
[0034] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art that various changes or modifications can be made to the present invention without departing from the principles and spirit of the present invention as defined by the claims. Therefore, the detailed description of the embodiments in this disclosure is for explanation only and not for limiting the present invention, but rather the scope of protection is defined by the content of the claims.
Claims
1. An automatic guiding assembly of a cabling machine, characterized by: Includes a base (1) and a connecting frame (6). A drive assembly (2) for cabling is installed at the rear end of the base (1). A fixing frame (3) is connected to the front end of the base (1). A controller (4) is installed in the middle of the base (1). A vertically symmetrical electric slide rail (5) is installed on the left side of the fixing frame (3). One end of the connecting frame (6) is slidably connected to the electric slide rail (5), which drives the connecting frame (6) to move up and down. The electric slide rail (5) is wired to the controller (4). The other end of the connecting frame (6) is connected to an outer mounting frame (7). Contact plates (9) are slidably connected to both the upper and lower ends of the mounting frame (7). A pressure sensor (8) is installed on the contact plate (9) that is pressed against the cable. The pressure sensor (8) is pressed against the inner side of the mounting frame (7). The pressure sensor (8) is wired to the controller (4). The fixing frame (3) and the mounting frame (7) are connected together by an elastic component. The elastic component is used to adjust the distance between the contact plate (9) and the mounting frame (7) and to buffer the pressure of the contact plate (9) being pressed. The contact plate (9) is provided with a protective component for contacting the cable.
2. An automatic guide assembly for a cable-laying machine according to claim 1, characterized in that: The elastic component includes a second air supply pipe (14). An air pump (10) is installed on the right side of the fixing frame (3). The air pump (10) is wired to the controller (4). The top and bottom ends of the air pump (10) are connected to first air supply pipes (11). The bottom first air supply pipe (11) passes through the base (1). Three-way valves (13) are installed on the opposite sides of the two mounting frames (7). The two first air supply pipes (11) are respectively connected to the two three-way valves (13), and the first air supply pipes (11) are connected to the three-way valves (13). An elastic tube (12) is provided at the joint. Air springs (15) are installed at both the top and bottom ends of the mounting frame (7). One end of the second air supply pipe (14) is connected to the three-way valve (13). The other end of the second air supply pipe (14) passes around the mounting frame (7) and passes through the mounting frame (7) at a position symmetrical to the three-way valve (13) to connect with the air spring (15). Another air spring (15) inside the mounting frame (7) is connected to the three-way valve (13). The air spring (15) is pressed and engaged with the contact plate (9).
3. An automatic guide assembly for a cable-laying machine according to claim 2, characterized in that: The protective assembly includes a connecting plate (16), which is connected to the left and right ends of the contact plate (9) and is located on the opposite side of the contact plate (9) and the pressure sensor (8). A roller (17) is rotatably connected between the two connecting plates (16) and the roller (17) is in contact with the cable.
4. An automatic guiding assembly for a cable-making machine according to claim 3, characterized in that: A protective pad (18) is fitted on the roller (17).
5. An automatic guiding assembly for a cable-making machine according to claim 4, characterized in that: The mounting frame (7) has baffles (19) connected to both the left and right ends of the front and rear sides, and the baffles (19) are used to cover the connecting plate (16).
6. An automatic guiding assembly for a cable-making machine according to claim 5, characterized in that: The top of the fixed frame (3) is connected to a stabilizer (20), and the first air supply pipe (11) connected to the top of the air pump (10) passes through the stabilizer (20).
7. An automatic guiding assembly for a cable-making machine according to claim 6, characterized in that: Several telescopic pads (21) are provided on the left side of the fixed frame (3). The two ends of the telescopic pads (21) are connected to the connecting frame (6) and the fixed frame (3) respectively. The telescopic pads (21) cover the electric slide rail (5).
8. An automatic guiding assembly for a cable-making machine according to claim 7, characterized in that: The three-way valve (13) is wired to the controller (4), and the controller (4) controls the airflow delivery ratio of the two outlets of the three-way valve (13). The protective pad (18) is provided with horizontal stripes.