A low-temperature winding test device suitable for robot cables

Abstract

This invention relates to the field of cable testing equipment technology, and discloses a low-temperature winding test device suitable for robot cables. The device includes a frame, comprising a first support plate and a second support plate. A lifting adjustment assembly is mounted on the frame, comprising a screw lifting shaft and a guide column. A movable frame is fixedly connected to the lower surface of the guide column. A second limiting shaft and a third limiting shaft are fixedly connected to the side surface of the first support plate. A sample inlet tube is disposed between the second limiting shaft and the third limiting shaft. A drive assembly is mounted on the frame. This invention achieves absolute synchronization between the winding and guiding actions by using a single power source and mechanical transmission, linking the winding shaft and the bidirectional lead screw to drive the sample inlet tube to translate, ensuring single-layer close-packed winding of the cable. Simultaneously, the adaptive displacement adjustment assembly provides flexible compensation, dynamically compensating for the geometric displacement difference between linear translation and arc oscillation.

Description

Technical Field

[0001] This invention relates to the field of cable testing equipment technology, and in particular to a low-temperature winding test device suitable for robot cables. Background Technology

[0002] In practical industrial applications, robot cables are often subjected to alternating high-frequency bending and extremely cold conditions. According to relevant industry testing standards, low-temperature winding tests must be conducted on the cable insulation and sheath materials to verify the crack resistance of the wire in low-temperature environments. The low-temperature winding test is a key quality inspection procedure for determining the environmental adaptability and factory pass rate of robot cables.

[0003] In traditional low-temperature winding test operations, testers usually first pass the cable sample to be tested through a fixed inlet hole or guide mechanism, and then fix the end of the sample on the winding shaft of the test bench. After starting the test equipment, the main control motor outputs rotational power, driving the winding shaft to rotate continuously, thereby winding the long strip of cable sample around the outer wall of the winding shaft one turn at a time. After the specified number of turns is reached, the testers then transfer the entire assembly with the sample wrapped in it to a low-temperature chamber for cooling and static placement, and finally observe whether cracks appear on the surface of the sheath.

[0004] Currently, traditional equipment typically uses a fixed-point cable entry method. As the number of winding turns increases, the cable entry angle will continuously deviate, causing the cable to easily become messy, stacked, and crossed on the winding shaft. Non-standard localized stress concentration will occur at the overlapping parts, affecting the accuracy of the test data. In order to solve the problem of cable uniformity, some existing equipment has introduced a dual servo motor system to independently drive the winding and cable laying. This not only significantly increases the equipment manufacturing cost, but also easily causes signal synchronization delay between independent electrical control systems. Summary of the Invention

[0005] The purpose of this invention is to provide a low-temperature winding test device suitable for robot cables, which solves the problems of traditional robot cable low-temperature winding test equipment, such as the messy cable stacking caused by fixed-point cable entry affecting the accuracy of testing, the high cost of introducing a dual servo motor system and the easy generation of signal synchronization delay, and the rigid cable laying mechanism being prone to motion jamming and cable scratches.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A low-temperature winding test device for robot cables includes a frame, which includes a first support plate and a second support plate. A lifting adjustment assembly is provided on the frame, which includes a screw lifting shaft and a guide column. A movable frame is fixedly connected to the lower surface of the guide column. A second limiting shaft and a third limiting shaft are fixedly connected to the side surface of the first support plate. A sample inlet tube is provided between the second limiting shaft and the third limiting shaft. A drive assembly is provided on the frame.

[0008] The driving assembly includes a drive motor, the output end of which is fixedly connected to a winding shaft, a winding roller fixedly connected to the side surface of the winding shaft, a first gear fixedly connected to the side surface of the winding shaft, a second gear meshing with the side surface of the first gear, a second shaft rotatably connected to the inner surfaces of both the first support plate and the second support plate, the inner surface of the second gear being fixedly connected to the second shaft, and a moving assembly connected to the end of the second shaft. The moving assembly is used to synchronously guide and arrange the sample inlet tube in accordance with the cable winding progress.

[0009] The moving component includes a bidirectional lead screw driven to rotate by the second rotating shaft, and a slider threadedly connected to the bidirectional lead screw. The slider is provided with an adaptive displacement adjustment component, and the slider is connected to the sample inlet tube through the adaptive displacement adjustment component.

[0010] The adaptive displacement adjustment assembly includes a telescopic rod, a first ball seat, and a second ball seat.

[0011] Preferably, a connecting support plate is fixedly connected to the upper surface of the first support plate, the lower surface of the connecting support plate is fixedly connected to the second support plate, an internal threaded cylinder and a fixed column are fixedly connected to the upper surface of the connecting support plate, the inner surface of the internal threaded cylinder is threadedly connected to the screw lifting shaft, and a rotating handle is fixedly connected to the upper end of the screw lifting shaft.

[0012] Preferably, the lower end of the screw lifting shaft is fixedly connected to the movable frame, the inner surface of the movable frame is rotatably connected to a first rotating shaft, the side surface of the first rotating shaft is fixedly connected to a first limiting shaft, and the fixed column has an opening inside, the inner surface of the opening being slidably connected to the guide column.

[0013] Preferably, the two ends of the bidirectional lead screw are fixedly connected to the second rotating shafts on both sides, the right surface of the first support plate is fixedly connected to the second support plate through a guide rod, and the side surface of the guide rod is slidably connected to the slider.

[0014] Preferably, the upper surface of the slider is fixedly connected to the first ball seat, the first ball seat has a first spherical placement groove inside, the first ball seat has a first ball head inside the first spherical placement groove, the side surface of the first ball head is fixedly connected to a first connecting block, the side surface of the first connecting block is fixedly connected to a second connecting block through the telescopic rod, the second ball seat has a second spherical placement groove inside, the second ball seat has a second ball head inside the second spherical placement groove, and the side surface of the second ball head is fixedly connected to the second connecting block.

[0015] Preferably, a first protective box is fixedly connected to the left surface of the first support plate, and the drive motor is disposed inside the first protective box.

[0016] Preferably, a second protective box is fixedly connected to the right surface of the device frame, the first gear and the second gear are both disposed inside the second protective box, a first bearing is fixedly connected to the side surface of the winding shaft, the right surface of the first bearing is fixedly connected to the second protective box, a second bearing is fixedly connected to the side surface of the second rotating shaft, and the right surface of the second bearing is fixedly connected to the second protective box.

[0017] Preferably, the right end of the second limiting shaft is fixedly connected to the second support plate, the right end of the third limiting shaft is fixedly connected to the second support plate, the left surface of the first support plate is fixedly connected to the drive motor, the right surface of the first support plate is fixedly connected to the second support plate via a second connecting rod, and the right surface of the first support plate is fixedly connected to the second support plate via a first connecting rod.

[0018] Preferably, the side surface of the winding shaft is rotatably connected to the first support plate, and the side surface of the winding shaft is rotatably connected to the second support plate.

[0019] Preferably, the sample introduction tube has a sample introduction hole inside, the upper surface of the slider is fixedly connected to a support rod by a support column, and the side surfaces of the first support plate and the second support plate are fixedly connected to support feet.

[0020] In summary, the present invention has at least one of the following beneficial technical effects:

[0021] 1. This invention solves the problems of messy and stacked cables in traditional equipment by setting up a driving component and a moving component, and linking them with the sample inlet tube for translational guidance. During the test, the sample inlet tube acts as a dynamic guide channel, adjusting the cable exit position in real time according to the winding progress, so that the cable's traction force is always perpendicular to the tangential direction of the winding shaft. This guides the cable to move horizontally in an orderly manner, ensuring that the cable forms a uniform and tight single-layer dense winding on the winding shaft. This eliminates local stress concentration caused by uneven winding and improves the accuracy and objectivity of low-temperature winding test data.

[0022] 2. This invention establishes a direct mechanical linkage between the drive component and the moving component. The drive motor, as a single power source, outputs rotational power, which can simultaneously drive the winding shaft to rotate and take in the wire, and drive the bidirectional lead screw to rotate according to the set mechanical transmission ratio, thereby driving the slider to move and lay the wire. This ensures absolute synchronization between the winding and laying actions, and eliminates the need to add an independent servo motor and a complex electrical control synchronization system to the laying mechanism, thus simplifying the overall structure of the equipment and reducing manufacturing and maintenance costs.

[0023] 3. This invention, by setting an adaptive displacement adjustment component and combining it with the dynamic length extension and retraction of the telescopic rod, compensates for the geometric displacement difference between linear translation and arc swing, achieving automatic and flexible compensation for spatial motion trajectory errors. This eliminates the motion interference and jamming risks caused by rigid connections, making the cable laying operation smooth and stable. It also avoids additional mechanical scratching and hard bending stress on the cable insulation sheath caused by the pipe opening, thereby protecting the physical integrity of the sample before entering the low-temperature chamber and avoiding interference with the test results due to early hidden damage to the cable caused by the tooling structure. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the lifting and adjusting assembly structure of the present invention;

[0026] Figure 3 This is a top view of the present invention;

[0027] Figure 4 This is a schematic diagram of the mobile component structure of the present invention;

[0028] Figure 5 This is a schematic diagram of the internal structure of the second protective box of the present invention;

[0029] Figure 6 This is a schematic diagram of the internal structure of the first protective box of the present invention;

[0030] Figure 7 This is a schematic diagram of the sample introduction tube structure of the present invention;

[0031] Figure 8 This is a schematic diagram of the first-view structure of the adaptive displacement adjustment component of the present invention;

[0032] Figure 9 This is a schematic diagram of the second perspective structure of the adaptive displacement adjustment component of the present invention.

[0033] Among them, 1. Device frame; 101. First support plate; 102. Second support plate; 2. Support foot; 3. First connecting rod; 4. Lifting and adjusting assembly; 401. Connecting support plate; 402. Internal threaded cylinder; 403. Screw lifting shaft; 404. Rotary handle; 405. Moving frame; 406. First rotating shaft; 407. First limiting shaft; 408. Fixed column; 409. Opening; 410. Guide column; 5. First protective box; 6. Second protective box; 7. Drive assembly; 701. Drive motor; 702. Winding shaft; 703. Winding roller; 704. First gear; 705. Second gear; 706. 8. Two rotating shafts; 9. Moving assembly; 10. Two-way lead screw; 11. Slider; 2. Guide rod; 3. Adaptive displacement adjustment assembly; 4. First ball seat; 5. First ball fitting groove; 6. First ball head; 7. Telescopic rod; 8. Second connecting block; 9. Second ball head; 10. Second ball seat; 11. Second ball fitting groove; 12. Support column; 13. Support rod; 14. Second limiting shaft; 15. Third limiting shaft; 16. Sample inlet tube; 17. Sample inlet hole; 18. Second connecting rod; 19. First bearing; 20. Second bearing. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1 -Appendix Figure 9 The present invention will be further described in detail below.

[0035] Reference Appendix Figure 1 With appendix Figure 2 This invention provides a low-temperature winding test device suitable for robot cables, including a device frame 1. The device frame 1 includes a first support plate 101 and a second support plate 102. A lifting adjustment assembly 4 is provided on the device frame 1. The lifting adjustment assembly 4 includes a screw lifting shaft 403 and a guide post 410. A movable frame 405 is fixedly connected to the lower surface of the guide post 410. A connecting support plate 401 is fixedly connected to the upper surface of the first support plate 101. The lower surface of the connecting support plate 401 is fixedly connected to the second support plate 102. An internal threaded cylinder 402 and a fixed post 408 are fixedly connected to the upper surface of the connecting support plate 401. The inner surface of the internal threaded cylinder 402 is threadedly connected to the screw lifting shaft 403.

[0036] Specifically, the device frame 1 serves as the basic load-bearing structure of the entire low-temperature winding test device. The device frame 1 includes a first support plate 101 and a second support plate 102. The first support plate 101 and the second support plate 102 provide stable lateral support. The purpose of setting up the lifting adjustment component 4 is to adapt to robot cable samples of different specifications and diameters. By rotating the threaded connection between the internal threaded cylinder 402 on the support plate 401 and the screw lifting shaft 403, the initial height of the moving frame 405 can be smoothly adjusted, thereby ensuring that the traction center line of cables of different thicknesses can match the subsequent winding height when initially introduced. This avoids non-standard initial bending stress in the cable insulation and sheath materials before entering the low-temperature state due to excessive initial entry angle, laying an accurate foundation for subsequent determination of the cable's environmental adaptability and factory qualification rate.

[0037] Reference Appendix Figure 1 With appendix Figure 2 The upper end of the screw lifting shaft 403 is fixedly connected to the handle 404, and the lower end of the screw lifting shaft 403 is fixedly connected to the movable frame 405. The inner surface of the movable frame 405 is rotatably connected to the first rotating shaft 406, and the side surface of the first rotating shaft 406 is fixedly connected to the first limiting shaft 407. The fixed column 408 has an opening 409 inside, and the inner surface of the opening 409 is slidably connected to the guide column 410.

[0038] Specifically, during operation, the tester can directly rotate and raise the screw lifting shaft 403 by manually rotating the handle 404. During this dynamic adjustment process, to prevent the moving frame 405 from rotating along with the screw lifting shaft 403, the sliding connection between the opening 409 in the fixed column 408 and the guide column 410 serves to prevent rotation and provide linear guidance, ensuring that the moving frame 405 can only move in a vertical linear direction. Simultaneously, the first rotating shaft 406 rotatably connected within the moving frame 405 and the first limiting shaft 407 fixedly connected to its surface constitute the upper dynamic clamping structure of the cable. This provides smooth rolling friction when the cable is under tensile stress, effectively reducing the resistance of the sample's entry and preventing the outer sheath of the long cable sample from being scratched at the entry point.

[0039] Reference Appendix Figure 1 With appendix Figure 7 The side surface of the first support plate 101 is fixedly connected to the second limiting shaft 12 and the third limiting shaft 13. A sample introduction tube 14 is provided between the second limiting shaft 12 and the third limiting shaft 13. A sample introduction hole 15 is opened inside the sample introduction tube 14.

[0040] Specifically, the second limiting shaft 12 and the third limiting shaft 13 together form a horizontal guide rail and a lower limiting channel for the transverse translation of the cable. The sample inlet tube 14 can move stably left and right at the other end under the clamping and guidance of the second limiting shaft 12 and the third limiting shaft 13, making the cable entry guide point a dynamically adjustable moving node. This changes the defect of the traditional fixed-point entry that causes the entry angle to deviate continuously, and ensures the rigor of the high-frequency bending condition test simulation.

[0041] Reference Appendix Figure 3 -Appendix Figure 6 The device frame 1 is equipped with a drive assembly 7, which includes a drive motor 701. The output end of the drive motor 701 is fixedly connected to a winding shaft 702. A winding roller 703 is fixedly connected to the side surface of the winding shaft 702. A first gear 704 is fixedly connected to the side surface of the winding shaft 702. A second gear 705 is meshed with the side surface of the first gear 704. A second rotating shaft 706 is rotatably connected to the inner surfaces of the first support plate 101 and the second support plate 102. The inner surface of the second gear 705 is fixedly connected to the second rotating shaft 706. The side surface of the winding shaft 702 is rotatably connected to the first support plate 101 and the second support plate 102.

[0042] Specifically, after the start-up test, the drive motor 701, as the sole power source, outputs rotational power to drive the winding shaft 702 and winding roller 703 to continuously rotate and wind up the cable. Simultaneously with winding, the first gear 704 on the side surface of the winding shaft 702 rotates synchronously and transmits power directly to the second gear 705 and the second shaft 706 through precise meshing. The first gear 704 and the second gear 705, according to a set mechanical gear ratio, drive the winding shaft 702 to rotate and wind up the cable, while simultaneously driving the rear moving component 8.

[0043] Compared with existing technologies, this invention ensures the physical synchronization of winding and laying wire actions, eliminating the need for an additional independent servo motor and complex electronic control synchronization system for the laying wire mechanism. It solves the problem of signal synchronization delay between independent electronic control systems, while simplifying the overall structure of the equipment, thereby reducing the manufacturing cost and maintenance difficulty of the equipment.

[0044] Reference Appendix Figure 3 With appendix Figure 4The end of the second rotating shaft 706 is connected to a moving component 8. The moving component 8 is used to move and guide the sample inlet tube 14 synchronously with the cable winding progress. The moving component 8 includes a bidirectional lead screw 801 driven to rotate by the second rotating shaft 706, and a slider 802 threadedly connected to the bidirectional lead screw 801. An adaptive displacement adjustment component 9 is provided on the slider 802. The slider 802 is connected to the sample inlet tube 14 through the adaptive displacement adjustment component 9. The two ends of the bidirectional lead screw 801 are fixedly connected to the second rotating shaft 706 on both sides respectively. The right surface of the first support plate 101 is fixedly connected to the second support plate 102 through a guide rod 803. The side surface of the guide rod 803 is slidably connected to the slider 802.

[0045] Specifically, the moving component 8 is an execution structure that solves the problems of messy and stacked cross-linking of traditional wiring. The bidirectional lead screw 801, driven to rotate by the second rotating shaft 706, converts the rotational motion into horizontal reciprocating linear translation of the slider 802 under the limit of the guide rod 803. Through this mechanical linkage, the slider 802 synchronously links with the sample inlet tube 14 to perform translational guidance wiring.

[0046] Throughout the winding test, the sample inlet tube 14 serves as a dynamic guide channel. As the winding progress increases, it precisely adjusts the cable exit position in real time, ensuring that the cable's traction force remains perpendicular to the tangential direction of the winding shaft 702. This guides the cable to move laterally in an orderly manner, ensuring that the cable forms a uniform single-layer winding on the outer wall of the winding roller 703. This eliminates non-standard localized stress concentrations caused by uneven winding and overlap, and improves the accuracy and objectivity of the low-temperature winding test data.

[0047] Reference Appendix Figure 7 -Appendix Figure 9 The adaptive displacement adjustment component 9 includes a telescopic rod 905, a first ball seat 901, and a second ball seat 908. The upper surface of the slider 802 is fixedly connected to the first ball seat 901. The first ball seat 901 has a first ball-shaped placement groove 902 inside. The first ball-shaped placement groove 902 has a first ball head 903 inside. The side surface of the first ball head 903 is fixedly connected to a first connecting block 904. The side surface of the first connecting block 904 is fixedly connected to a second connecting block 906 via the telescopic rod 905. The second ball seat 908 has a second ball-shaped placement groove 909 inside. The second ball head 907 is inside the second ball-shaped placement groove 909. The side surface of the second ball head 907 is fixedly connected to the second connecting block 906.

[0048] Specifically, during the process of the slider 802 driving the sample inlet tube 14 to translate under force and guide the cable laying, there is a geometric displacement difference between the linear translation below and the arc swing generated by the traction of the upper cable. Traditional rigid connections are prone to jamming. In this invention, the first ball head 903 rotates omnidirectionally in the first ball-shaped groove 902 of the first ball seat 901, and the second ball head 907 rotates omnidirectionally in the second ball-shaped groove 909 of the second ball seat 908. At the same time, combined with the dynamic extension and contraction of the telescopic rod 905 under tensile or compressive stress, the geometric displacement difference is compensated, and automatic flexible compensation for spatial motion trajectory errors is achieved. This eliminates motion interference caused by rigid connections, makes the cable laying action smooth and stable, avoids additional mechanical scratching and hard bending stress on the cable insulation sheath caused by the tube opening, protects the physical integrity of the sample before entering the low temperature chamber, and avoids interference with the test results caused by early hidden damage to the cable due to the tooling structure.

[0049] Reference Appendix Figure 6 The first protective box 5 is fixedly connected to the left surface of the first support plate 101, and the drive motor 701 is located inside the first protective box 5.

[0050] Specifically, since the equipment involves low-temperature winding tests on the insulation and sheathing materials of robot cables, the testing environment and subsequent transfer of the entire tooling to the low-temperature chamber are prone to condensation caused by alternating hot and cold temperatures or the intrusion of extreme cold. The first protective box 5 provides a closed protective chamber for the core power source drive motor 701, isolating it from external cold air, water vapor, and dust from the industrial workshop. This prevents the drive motor 701 from freezing its lubricating grease or short-circuiting its internal circuits due to moisture caused by the low-temperature environment, ensuring the long-term stable operation of the entire winding test equipment under extreme temperature conditions.

[0051] Reference Appendix Figure 6 The right surface of the device frame 1 is fixedly connected to the second protective box 6. The first gear 704 and the second gear 705 are both located inside the second protective box 6. The side surface of the winding shaft 702 is fixedly connected to the first bearing 17. The right surface of the first bearing 17 is fixedly connected to the second protective box 6. The side surface of the second rotating shaft 706 is fixedly connected to the second bearing 18. The right surface of the second bearing 18 is fixedly connected to the second protective box 6.

[0052] Specifically, the second protective box 6 provides all-around protection for the meshing transmission area of ​​the first gear 704 and the second gear 705. This not only prevents clothing or limbs of test personnel from being accidentally caught in the gears while operating the equipment, ensuring the safety of the industrial quality inspection test site, but also prevents cable debris and other debris from falling into the gear grooves and causing gear jamming. The first bearing 17 and the second bearing 18 provide strong rotational support for the ends of the winding shaft 702 and the second shaft 706, respectively. Through their fixed connection with the second protective box 6, they disperse the radial sway load of the shaft caused by the high-intensity tension of the cable, ensuring the precision of gear meshing under high-load winding conditions.

[0053] Reference Appendix Figure 1 With appendix Figure 6 The right end of the second limiting shaft 12 is fixedly connected to the second support plate 102, the right end of the third limiting shaft 13 is fixedly connected to the second support plate 102, the left surface of the first support plate 101 is fixedly connected to the drive motor 701, the right surface of the first support plate 101 is fixedly connected to the second support plate 102 through the second connecting rod 16, and the right surface of the first support plate 101 is fixedly connected to the second support plate 102 through the first connecting rod 3.

[0054] Specifically, the second limiting shaft 12, the third limiting shaft 13, the second connecting rod 16, and the first connecting rod 3 together construct a high-strength multi-point support frame between the first support plate 101 and the second support plate 102. When the robot cable is wound with high tension and multiple turns, the winding shaft 702 and related support surfaces will bear huge lateral tensile forces. The spatial lateral reinforcement structure formed by the second limiting shaft 12, the third limiting shaft 13, the second connecting rod 16, and the first connecting rod 3 can effectively absorb and disperse tensile stress, prevent the device frame 1 from being twisted and deformed under stress, and ensure that the center distance between the internal winding shaft 702 and the bidirectional lead screw 801 remains constant, thereby ensuring the long-term accuracy of the mechanical transmission ratio and avoiding the problem of cable misalignment caused by frame deformation.

[0055] Reference Appendix Figure 1 With appendix Figure 7 The upper surface of the slider 802 is fixedly connected to the support rod 11 via the support column 10, and the side surfaces of the first support plate 101 and the second support plate 102 are both fixedly connected to the support feet 2.

[0056] Specifically, the upper surface of the slider 802 is fixedly connected to the support rod 11 via the support column 10, providing bottom-level auxiliary support. During the high-speed winding and traction of the cable, the sample inlet tube 14 is subjected not only to lateral traction force but also to the downward vertical gravity component of the cable sample. The support column 10 and support rod 11 provide strong rigid support for the sample inlet tube 14 from below, preventing it from sagging, deforming, or loosening under long-term heavy-load testing. This ensures that the adaptive displacement adjustment component 9 on the rear side only needs to handle the compensation of spatial trajectory displacement difference, without having to bear the downward gravity, thus improving the service life of the adaptive displacement adjustment component 9. The bottom support feet 2 increase the contact friction area between the device frame 1 and the ground, ensuring the overall stability of the equipment during high-frequency winding startup and operation.

[0057] Working principle: Before conducting the low-temperature winding test, the tester first passes the robot cable sample to be tested through the sample inlet hole 15 inside the sample inlet tube 14, and then fixes the end of the sample on the winding roller 703 on the side surface of the winding shaft 702. If it is necessary to adjust the wire feeding height, the handle 404 can be rotated to drive the screw lifting shaft 403 to rotate inside the internal thread cylinder 402, thereby driving the moving frame 405 to move up and down along the guide column 410 and adjusting the first limit shaft 407 on the moving frame 405 to the appropriate position.

[0058] The drive motor 701 is started, and the drive motor 701 outputs rotational power as a single power source, driving the winding shaft 702 and the winding roller 703 to rotate continuously, winding the cable. During the process, the rotation of the winding shaft 702 synchronously drives the first gear 704 on its side surface to rotate. Since the first gear 704 meshes with the second gear 705, the second gear 705 rotates accordingly and drives the second rotating shaft 706 to rotate. Then, according to the set mechanical transmission ratio, the bidirectional lead screw 801 in the moving component 8 is driven to rotate. Through the setting of the drive component 7 and the moving component 8, the absolute synchronization of the winding and take-up action and the cable laying drive action is achieved, eliminating the cost of adding an additional servo motor and electronic control synchronization system.

[0059] As the bidirectional lead screw 801 rotates continuously, the slider 802, which is threadedly connected to the bidirectional lead screw 801, moves horizontally and reciprocally along the bidirectional lead screw 801 under the limit of the guide rod 803. The translation of the slider 802 is achieved through the adaptive displacement adjustment component 9 working together with the support rod 11 and the support column 10, thereby pushing the sample inlet tube 14 to translate synchronously. The sample inlet tube 14, as a dynamic guide channel, moves laterally in real time with the cable winding progress, ensuring that the cable exit position always follows the winding point, so that the cable traction force is strictly kept perpendicular to the tangential direction of the winding shaft 702, thereby guiding the cable to form a uniform winding on the winding roller 703, avoiding the messy wiring, stacking and crossing, and local stress concentration phenomena caused by traditional fixed-point wire feeding.

[0060] During the force-induced translation and guide wire laying process of the sample inlet tube 14, an unavoidable geometric displacement difference exists between the linear translation and the arc swing generated by the wire traction, which can easily lead to rigid jamming. The adaptive displacement adjustment component 9 plays a flexible compensation role:

[0061] The first ball head 903 rotates omnidirectionally within the first ball groove 902 of the first ball seat 901, and the second ball head 907 rotates omnidirectionally within the second ball groove 909 of the second ball seat 908. At the same time, the telescopic rod 905 extends and retracts in minute lengths according to the force, dynamically compensating for spatial displacement differences and eliminating motion interference caused by rigid connections. This makes the entire linkage cable laying action smooth and stable, avoiding mechanical scratching and hard bending stress on the cable insulation sheath caused by the sample inlet tube 14, and protecting the physical integrity of the cable sample.

Claims

1. A low-temperature winding test device for robot cables, comprising a device frame (1), the device frame (1) comprising a first support plate (101) and a second support plate (102), a lifting adjustment assembly (4) provided on the device frame (1), the lifting adjustment assembly (4) comprising a screw lifting shaft (403) and a guide column (410), a movable frame (405) fixedly connected to the lower surface of the guide column (410), a second limiting shaft (12) and a third limiting shaft (13) fixedly connected to the side surface of the first support plate (101), a sample introduction tube (14) provided between the second limiting shaft (12) and the third limiting shaft (13), characterized in that, The device frame (1) is provided with a drive assembly (7); The drive assembly (7) includes a drive motor (701), the output end of which is fixedly connected to a winding shaft (702), a winding roller (703) is fixedly connected to the side surface of the winding shaft (702), a first gear (704) is fixedly connected to the side surface of the winding shaft (702), a second gear (705) is meshed with the side surface of the first gear (704), a second rotating shaft (706) is rotatably connected to the inner surfaces of the first support plate (101) and the second support plate (102), the inner surface of the second gear (705) is fixedly connected to the second rotating shaft (706), and a moving assembly (8) is connected to the end of the second rotating shaft (706). The moving assembly (8) is used to move and guide the sample inlet tube (14) synchronously with the cable winding progress. The moving component (8) includes a bidirectional lead screw (801) driven to rotate by the second rotating shaft (706), and a slider (802) threadedly connected to the bidirectional lead screw (801). An adaptive displacement adjustment component (9) is provided on the slider (802), and the slider (802) is connected to the sample inlet tube (14) through the adaptive displacement adjustment component (9). The adaptive displacement adjustment component (9) includes a telescopic rod (905), a first ball seat (901), and a second ball seat (908).

2. The low-temperature winding test device for robot cables according to claim 1, characterized in that, A connecting support plate (401) is fixedly connected to the upper surface of the first support plate (101). The lower surface of the connecting support plate (401) is fixedly connected to the second support plate (102). An internal threaded cylinder (402) and a fixed column (408) are fixedly connected to the upper surface of the connecting support plate (401). The inner surface of the internal threaded cylinder (402) is threadedly connected to the screw lifting shaft (403). A rotating handle (404) is fixedly connected to the upper end of the screw lifting shaft (403).

3. The low-temperature winding test device for robot cables according to claim 2, characterized in that, The lower end of the screw lifting shaft (403) is fixedly connected to the movable frame (405). The inner surface of the movable frame (405) is rotatably connected to the first rotating shaft (406). The side surface of the first rotating shaft (406) is fixedly connected to the first limiting shaft (407). The fixed column (408) has an opening (409) inside. The inner surface of the opening (409) is slidably connected to the guide column (410).

4. The low-temperature winding test device for robot cables according to claim 1, characterized in that, The two ends of the bidirectional lead screw (801) are fixedly connected to the second rotating shafts (706) on both sides respectively. The right surface of the first support plate (101) is fixedly connected to the second support plate (102) through the guide rod (803). The side surface of the guide rod (803) is slidably connected to the slider (802).

5. A low-temperature winding test device for robot cables according to claim 4, characterized in that, The upper surface of the slider (802) is fixedly connected to the first ball seat (901). The first ball seat (901) has a first ball-shaped placement groove (902) inside. The first ball-shaped placement groove (902) has a first ball head (903) inside. The side surface of the first ball head (903) is fixedly connected to a first connecting block (904). The side surface of the first connecting block (904) is fixedly connected to a second connecting block (906) through the telescopic rod (905). The second ball seat (908) has a second ball-shaped placement groove (909) inside. The second ball head (907) is inside the second ball-shaped placement groove (909). The side surface of the second ball head (907) is fixedly connected to the second connecting block (906).

6. The low-temperature winding test device for robot cables according to claim 1, characterized in that, The first protective box (5) is fixedly connected to the left surface of the first support plate (101), and the drive motor (701) is located inside the first protective box (5).

7. The low-temperature winding test device for robot cables according to claim 1, characterized in that, The right surface of the device frame (1) is fixedly connected to a second protective box (6). The first gear (704) and the second gear (705) are both located inside the second protective box (6). The side surface of the winding shaft (702) is fixedly connected to a first bearing (17). The right surface of the first bearing (17) is fixedly connected to the second protective box (6). The side surface of the second rotating shaft (706) is fixedly connected to a second bearing (18). The right surface of the second bearing (18) is fixedly connected to the second protective box (6).

8. A low-temperature winding test device for robot cables according to claim 1, characterized in that, The right end of the second limiting shaft (12) is fixedly connected to the second support plate (102), the right end of the third limiting shaft (13) is fixedly connected to the second support plate (102), the left surface of the first support plate (101) is fixedly connected to the drive motor (701), the right surface of the first support plate (101) is fixedly connected to the second support plate (102) through the second connecting rod (16), and the right surface of the first support plate (101) is fixedly connected to the second support plate (102) through the first connecting rod (3).

9. A low-temperature winding test device for robot cables according to claim 1, characterized in that, The side surface of the winding shaft (702) is rotatably connected to the first support plate (101), and the side surface of the winding shaft (702) is rotatably connected to the second support plate (102).

10. A low-temperature winding test device for robot cables according to claim 1, characterized in that, The sample inlet tube (14) has a sample inlet hole (15) inside. The upper surface of the slider (802) is fixedly connected to a support rod (11) by a support column (10). The side surfaces of the first support plate (101) and the second support plate (102) are both fixedly connected to support feet (2).

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