An automatic ground wire selecting device for high-speed cable harnesses

Abstract

The present application belongs to the technical field of automatic processing of cable harnesses, and specifically relates to a high-speed automatic ground wire picking device for cable harnesses, which includes a base. One side of the base is connected with a wire picking unit, and the wire picking unit includes a cylinder two fixedly connected to one side of the base, a sliding seat two slidably connected to one side of the cylinder two and fixedly connected to the telescopic end of the cylinder two, a cylinder three fixedly connected to the upper end of the sliding seat two, a sliding seat three slidably connected to the upper end of the cylinder three and fixedly connected to the telescopic end of the cylinder three, and a clamping part installed on the upper end of the sliding seat three. The cylinder two and the cylinder three are used to drive the clamping part to move in the Z-axis direction and the X-axis direction respectively. This wire picking design of the present application can pick multiple ground wires on the same horizontal plane simultaneously, with higher wire picking efficiency. Moreover, during the wire picking process, by controlling the telescopic stroke of the cylinder, it is possible to achieve multiple-step bending in batches, which can reduce the amount of deformation per time, reduce stress concentration, and avoid generating large stresses in the bending area due to a one-time 90° bend.

Description

Technical Field

[0001] This application relates to the technical field of automated processing of cable harnesses, and specifically to a high-speed cable harness automatic ground wire picking device. Background Art

[0002] High-speed cable harnesses are complex cable assemblies designed for high-frequency and high-speed signal transmission. Their structural design needs to meet the requirements of signal integrity (SI), electromagnetic compatibility (EMC), and mechanical reliability. The harness consists of structures such as conductors, insulation layers, shielding layers, and ground wires.

[0003] To adapt to the requirements of specific connectors (such as glue core welding), high-speed cable harnesses need to undergo a series of processing operations (removing the shielding layer and insulation layer on the outer layer of the cable to expose the internal conductors and ground wires for welding). If the ground wire and the signal conductor are on the same horizontal plane, short circuits may occur during welding due to contact or solder flow. Therefore, it is necessary to lift the ground wire to create a height difference with the conductor (such as vertical stratification), which can effectively isolate the two. At the same time, the lifted ground wire also facilitates the connection of the ground wire to the housing.

[0004] Currently, the prior art (a Chinese utility model patent with the publication number CN220543654U) discloses a high-speed cable harness automatic ground wire picking device. Although it can pick out the ground wire inside the harness, this device is applicable to the automatic wire picking of the ground wire of circular harnesses. When the harness is flat and the ground wire and the signal conductor are on the same plane, this device cannot achieve effective wire picking. Therefore, it is necessary to invent a device for picking the ground wire of flat high-speed cable harnesses. Summary of the Invention

[0005] The purpose of this application is to provide a high-speed cable harness automatic ground wire picking device to solve the technical problems raised in the above background art.

[0006] To achieve the above purpose, this application provides the following technical solution: A high-speed cable harness automatic ground wire picking device includes a base. A wire picking unit is connected to one side of the base. The wire picking unit includes a cylinder two fixedly connected to one side of the base, a sliding seat two slidably connected to one side of the cylinder two and fixedly connected to the telescopic end of the cylinder two, a cylinder three fixedly connected to the upper end of the sliding seat two, a sliding seat three slidably connected to the upper end of the cylinder three and fixedly connected to the telescopic end of the cylinder three, and a clamping portion installed on the upper end of the sliding seat three.

[0007] The cylinder two and the cylinder three are used to drive the clamping portion to move in the Z-axis direction and the X-axis direction respectively. The clamping portion clamps the ground wire and simultaneously undergoes displacement in the Z-axis direction and the X-axis direction to perform a 90° bending wire picking on the ground wire.

[0008] Preferably, a support base is also fixedly connected to the upper end of the base. A wire groove for accommodating a wire harness is formed in the upper end of the support base, and a cover plate for limiting the wire harness is connected to the upper end of the support base.

[0009] Preferably, a conductor pressing part is also connected to the upper end of the base. The conductor pressing part includes a vertical plate fixedly connected to the upper end of the base, a first cylinder fixedly connected to one side of the vertical plate, a first sliding seat slidably connected to one side of the first cylinder and fixedly connected to the telescopic end of the first cylinder, a pressing seat fixedly connected to one side of the first sliding seat, and a pressing head fixedly connected to the lower end of the pressing seat. The pressing head is used to press down the conductor in the wire harness so that the conductor and the ground wire cannot be on the same horizontal plane.

[0010] Preferably, a sliding groove is formed in one side of the support base, and a fourth sliding seat is slidably connected in the sliding groove. A fourth cylinder is fixedly connected to one side of the support base, and the telescopic end of the fourth cylinder is fixedly connected to the lower end of the fourth sliding seat. An extension seat is fixedly connected to one side of the fourth sliding seat, and ground wire pretreatment units are connected to the upper end of the extension seat and the lower end of the pressing seat respectively.

[0011] Preferably, an avoidance groove for accommodating the conductor and the pressing head is formed inside the extension seat.

[0012] Preferably, the ground wire pretreatment unit includes two groups of cavities respectively formed inside the extension seat and the pressing seat, arc grooves respectively formed inside the extension seat and the pressing seat and communicated with the cavities, lead screws rotatably connected to the inner walls of the cavities, concave seats slidably connected to the inner walls of the cavities and respectively screwed outside the lead screws, and pressing rollers rotatably connected to the inner walls of the concave seats. Motors are fixedly connected to one side of the extension seat and the pressing seat respectively, and the output shafts of the motors are fixedly connected to one ends of the lead screws.

[0013] Preferably, the arc grooves inside the extension seat and the pressing seat are used to accommodate the ground wire. By rotating the motor to drive the lead screw to rotate, the concave seat is driven to move. When the concave seat moves, the pressing roller contacts the outer surface of the ground wire and rolls the ground wire. Through the rolling treatment of the ground wire, local protrusions and depressions on the ground wire are eliminated, so that the upper and lower surfaces of multiple ground wires are flat and can stably contact the clamping part.

[0014] Preferably, an arc-shaped electric heating element is fixedly connected to the inner wall of the arc groove, and the arc-shaped electric heating element is used to preheat the ground wire, reduce the yield strength of the ground wire and reduce the elastic rebound generated during the bending process of the ground wire.

[0015] Preferably, installation grooves communicated with the arc grooves are also formed inside the extension seat and the pressing seat, and an ultrasonic transducer part is fixedly connected in the installation groove. A conduction part is fixedly connected to one side of the ultrasonic transducer part. A groove body is formed inside the arc-shaped electric heating element, and one end of the conduction part passes through the groove body and extends outwards.

[0016] Preferably, the ultrasonic waves generated by the ultrasonic transducer part are conducted to the ground wire through the conduction part, and the ultrasonic waves form micro-vibrations inside the ground wire and promote the dislocation movement inside the material.

[0017] Compared with the prior art, the beneficial effects of the present application are as follows:

[0018] 1) The present application is provided with a thread picking unit. The clamping part is driven by the second cylinder and the third cylinder to move in the Z-axis direction and the X-axis direction, and the clamping part clamps the ground wire and simultaneously performs displacement in the Z-axis direction and the X-axis direction to complete the 90° bending and thread picking action of the ground wire. This thread picking design of the present application can simultaneously pick multiple ground wires on the same horizontal plane, with higher thread picking efficiency. Moreover, during the thread picking process, by controlling the telescopic stroke of the cylinder, multi-step bending in multiple times can be achieved, which can reduce the amount of deformation per time, reduce stress concentration, and avoid generating large stress in the bending area due to a one-time 90° bending;

[0019] 2) The present application is provided with a ground wire preprocessing unit. The motor drives the lead screw to rotate, and the rotation of the lead screw drives the concave seat to move. When the concave seat moves, the pressure roller contacts the outer surface of the ground wire and rolls the ground wire. Through the rolling treatment of the ground wire, local protrusions and depressions on the ground wire are eliminated, so that the upper and lower surfaces of multiple ground wires are flat and can stably contact the clamping part, avoiding the problem of unreliable clamping caused by inconsistent thickness or deformation of two ground wires. At the same time, the original ground wire may have slight twists or bends, and rolling can make it tend to a straight state, reducing the deviation during clamping and ensuring that the clamping part can stably perform the thread picking action after clamping;

[0020] 3) The present application is provided with an arc-shaped electric heating element, which can reduce the yield strength of the material of the ground wire, make it easier to enter the plastic deformation state, thereby reducing the elastic springback generated during the bending process, ensuring the stability of the bending angle. At the same time, it can also improve the ductility of the material, making it deform more uniformly during the processing, reducing local stress concentration, and thus avoiding local damage or coating damage caused by excessive stress. After preheating, the material becomes softer, and the bending force required during processing is reduced, which helps to improve the accuracy and consistency during the processing of automated equipment and reduce the uneven bending caused by equipment errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present application;

[0022] Figure 2 is a schematic diagram of the structure of the chute, the fourth cylinder, the fourth sliding seat and the extension seat of the present application;

[0023] Figure 3 is a schematic diagram of the 90° bending state of the ground wire and the conductor pressing state of the present application;

[0024] Figure 4 is a schematic diagram of the structure of the pressing head of the present application;

[0025] Figure 5Schematic diagram of the avoidance groove and motor structure of the present application;

[0026] Figure 6 The present application Figure 5 Enlarged schematic diagram of the structure at position A in the present application;

[0027] Figure 7 Cross-sectional view of the extension seat of the present application;

[0028] Figure 8 The present application Figure 7 Enlarged schematic diagram of the structure at position B in the present application;

[0029] Figure 9 The present application Figure 2 Enlarged schematic diagram of the structure at position C in the present application;

[0030] In the figure: 1, base; 11, support seat; 12, cover plate; 13, vertical plate; 14, chute; 2, conductor pressing part; 21, cylinder 1; 22, sliding seat 1; 23, pressing seat; 24, pressing head; 3, thread picking unit; 31, cylinder 2; 32, sliding seat 2; 33, cylinder 3; 34, sliding seat 3; 35, clamping part; 4, cylinder 4; 5, sliding seat 4; 51, avoidance groove; 52, extension seat; 6, ground wire pretreatment unit; 61, cavity; 62, lead screw; 63, concave seat; 64, pressing roller; 65, arc groove; 66, installation groove; 67, motor; 7, arc-shaped heating element; 8, ultrasonic transducer part; 9, conduction part. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0032] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. Embodiment

[0033] Please refer to Figure 1-9, this application provides a technical solution: a high-speed cable harness automatic ground wire picking device, including a base 1. A wire picking unit 3 is connected to one side of the base 1. The wire picking unit 3 includes a cylinder two 31 fixedly connected to one side of the base 1, a sliding seat two 32 slidably connected to one side of the cylinder two 31 and fixedly connected to the telescopic end of the cylinder two 31, a cylinder three 33 fixedly connected to the upper end of the sliding seat two 32, a sliding seat three 34 slidably connected to the upper end of the cylinder three 33 and fixedly connected to the telescopic end of the cylinder three 33, and a clamping part 35 installed on the upper end of the sliding seat three 34;

[0034] The cylinder two 31 and the cylinder three 33 are used to drive the clamping part 35 to move in the Z-axis direction and the X-axis direction respectively. The clamping part 35 clamps the ground wire and simultaneously performs displacement in the Z-axis direction and the X-axis direction to bend and pick the ground wire by 90°.

[0035] A support seat 11 is also fixedly connected to the upper end of the base 1. A wire groove for accommodating the wire harness is opened on the upper end of the support seat 11. A cover plate 12 for limiting the wire harness is connected to the upper end of the support seat 11.

[0036] A conductor pressing part 2 is also connected to the upper end of the base 1. The conductor pressing part 2 includes a vertical plate 13 fixedly connected to the upper end of the base 1, a cylinder one 21 fixedly connected to one side of the vertical plate 13, a sliding seat one 22 slidably connected to one side of the cylinder one 21 and fixedly connected to the telescopic end of the cylinder one 21, a pressing seat 23 fixedly connected to one side of the sliding seat one 22, and a pressing head 24 fixedly connected to the lower end of the pressing seat 23. The pressing head 24 is used to press down the conductor in the wire harness so that the conductor and the ground wire cannot be on the same horizontal plane.

[0037] A chute 14 is opened on one side of the support seat 11. A sliding seat four 5 is slidably connected in the chute 14. A cylinder four 4 is fixedly connected to one side of the support seat 11. The telescopic end of the cylinder four 4 is fixedly connected to the lower end of the sliding seat four 5. An extension seat 52 is fixedly connected to one side of the sliding seat four 5. Ground wire pretreatment units 6 are connected to the upper end of the extension seat 52 and the lower end of the pressing seat 23 respectively.

[0038] A clearance groove 51 for accommodating the conductor and the pressing head 24 is opened inside the extension seat 52.

[0039] By adopting the above scheme, one end of the wire harness after cutting the shielding layer and the insulating layer is placed in the wire groove in the support seat 11, and then the cover plate 12 is pressed on the upper end of the support seat 11 (a cylinder can be arranged above the cover plate 12 and the upper end of the cover plate 12 is connected to the telescopic end of the cylinder) to realize the positioning of the wire harness. Then, control the cylinder one 21 to work. The cylinder one 21 works and extends to drive the sliding seat one 22 to move downward. The downward movement of the sliding seat one 22 drives the pressing seat 23 and the pressing head 24 to move downward. The downward movement of the pressing head 24 can press the Figure 2 conductor exposed at one end of the wire harness shown in Figure 3as shown in the state of Figure 3 as shown in the state of

[0040] Please refer to Figure 3 - Figure 6 , the ground wire pretreatment unit 6 includes two groups of cavities 61 respectively opened inside the extension seat 52 and the pressing seat 23, arc grooves 65 respectively opened inside the extension seat 52 and the pressing seat 23 and communicated with the cavities 61, screw rods 62 rotatably connected to the inner walls of the cavities 61, concave seats 63 slidably connected to the inner walls of the cavities 61 and respectively screwed outside the screw rods 62, and pressing rollers 64 rotatably connected to the inner walls of the concave seats 63. Motors 67 are fixedly connected to one side of the extension seat 52 and the pressing seat 23, and the output shafts of the motors 67 are fixedly connected to one ends of the screw rods 62.

[0041] The arc grooves 65 inside the extension seat 52 and the pressing seat 23 are used to accommodate the ground wires. By rotating the motors 67 to drive the screw rods 62 to rotate, the concave seats 63 are driven to move. When the concave seats 63 move, the pressing rollers 64 contact the outer surfaces of the ground wires and roll-press the ground wires. Through the rolling treatment of the ground wires, local protrusions and depressions on the ground wires are eliminated, so that the upper and lower surfaces of multiple ground wires are flat and can stably contact the clamping part 35.

[0042] By adopting the above solution, before the clamping part 35 clamps the ground wire, the fourth cylinder 4 works and extends to drive the extension seat 52 to slide upward in the sliding groove 14, so that the lower half of the ground wire can enter the cavity 61 in the extension seat 52. At the same time, since the first cylinder 21 drives the first sliding seat 22 to descend, the pressing seat 23 presses on the ground wire, and the upper half of the ground wire can enter the cavity 61 in the pressing seat 23. The positioning of the ground wire is realized through the cavity 61. Then, the motor 67 is controlled to work and drive the lead screw 62 to rotate. The rotation of the lead screw 62 drives the concave seat 63 to move. When the concave seat 63 moves, the pressing roller 64 can contact the outer surface of the ground wire. The pressing roller 64 in the pressing seat 23 and the pressing roller 64 in the extension seat 52 can respectively roll and flatten the upper and lower ends of the ground wire, eliminate the local protrusions and depressions on the ground wire, make the upper and lower surfaces of multiple ground wires flat and able to stably contact the clamping part 35, avoid the problem of unreliable clamping caused by inconsistent thickness or deformation of two ground wires. At the same time, the original ground wire may have slight twists or bends, and rolling can make it tend to a straight state, reduce the deviation during clamping, and ensure that the clamping part 35 can stably perform the thread picking action after clamping.

[0043] Please refer to Figure 6 - Figure 8 , an arc-shaped electric heating element 7 is fixedly connected to the inner wall of the arc-shaped groove 65, and the arc-shaped electric heating element 7 is used to preheat the ground wire, reduce the yield strength of the ground wire and reduce the elastic springback generated during the bending process of the ground wire.

[0044] By adopting the above solution, an arc-shaped electric heating element 7 is installed in the arc-shaped groove 65. The arc-shaped electric heating element 7 contacts the outer surface of the ground wire and preheats the ground wire, reducing the yield strength of the ground wire material, making it easier to enter the plastic deformation state, thereby reducing the elastic springback generated during the bending process, ensuring the stability of the bending angle. At the same time, it can also improve the ductility of the material, making it deform more uniformly during the processing, reducing local stress concentration, and thus avoiding local damage or coating damage caused by excessive stress. After preheating, the material becomes softer, the bending force required during processing is reduced, which helps to improve the accuracy and consistency during the processing of the automatic equipment, and reduce the uneven bending caused by equipment errors.

[0045] Please refer to Figure 6 - Figure 8 , an installation groove 66 communicating with the arc-shaped groove 65 is further opened inside the extension seat 52 and the pressing seat 23, and an ultrasonic transducer part 8 is fixedly connected in the installation groove 66. One side of the ultrasonic transducer part 8 is fixedly connected with a conduction part 9. A groove body is opened inside the arc-shaped electric heating element 7, and one end of the conduction part 9 passes through the groove body and extends outward.

[0046] The ultrasonic waves generated by the ultrasonic transducer part 8 are conducted to the ground wire through the conduction part 9, and the ultrasonic waves form micro-vibrations inside the ground wire and promote the dislocation movement inside the material.

[0047] By adopting the above solution, the ultrasonic transducer unit 8 is externally connected to an ultrasonic generator. The ultrasonic generator emits high-frequency electrical signals (20 kHz to 40 kHz) and outputs them to the ultrasonic transducer unit 8. The ultrasonic transducer unit 8 converts them into mechanical vibrations, which are amplified by the conduction part 9 (horn) and then transmitted to the surface of the metal conductor. The ultrasonic principle belongs to the mature existing technology and will not be elaborated here. The vibration energy promotes the dynamic recrystallization of metal grains (which can promote the movement of dislocations inside the material), reduces grain boundary defects, and improves the density (makes the lattice structure more uniform, reduces cold working hardening, and improves plasticity). Moreover, the vibration energy releases internal stress and reduces the deformation risk in subsequent processing. According to the Hall-Petch relationship: the grain size (d) is inversely proportional to the yield strength (σ) of the material (σ ∝ 1 / √d). Grain refinement can significantly improve the strength. After the copper wire is treated by ultrasonic waves, its deformation resistance can be reduced.

[0048] Working principle: One end of the wire harness after cutting the shielding layer and insulating layer is placed in the wire groove in the support seat 11, and then the cover plate 12 is pressed on the upper end of the support seat 11 to position the wire harness. The first cylinder 21 works and extends to drive the first slide seat 22 to move downward. The downward movement of the first slide seat 22 drives the pressing seat 23 and the pressing head 24 to move downward. The downward movement of the pressing head 24 can press the Figure 2 conductor exposed at one end of the wire harness shown in the figure and located between the left and right ground wires to bend downward, so that the conductor cannot be on the same horizontal plane as the left and right ground wires. The third cylinder 33 extends and drives the third slide seat 34 to move towards the support seat 11. When the lower clamp moves below the left and right ground wires, the clamping part 35 is controlled to work, and the upper clamp and the lower clamp close together to clamp the two ground wires. Then the second cylinder 31 works and extends to drive the second slide seat 32 to rise. While the second cylinder 31 extends, the third cylinder 33 continues to work and extend to drive the third slide seat 34 to move. The extension of the second cylinder 31 can drive the clamping part 35 to move upward, and at the same time, the extension of the third cylinder 33 can drive the clamping part 35 to move towards the support seat 11, realizing the picking up of the two ground wires and the picked-up ground wires being bent at a 90° angle.

[0049] The above shows and describes the basic principles, main features and advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present application is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application, and any reference signs in the claims should not be regarded as limiting the claimed rights.

[0050] Although embodiments of the present application have been shown and described, those of ordinary skill in the art will understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present application. The scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-speed cable harness automatic ground wire picking device, comprising a base (1), characterized in that: A thread taking-up unit (3) is connected to one side of the base (1), and the thread taking-up unit (3) comprises a second cylinder (31) fixedly connected to one side of the base (1), a second slide seat (32) slidably connected to one side of the second cylinder (31) and fixedly connected to the telescopic end of the second cylinder (31), a third cylinder (33) fixedly connected to the upper end of the second slide seat (32), a third slide seat (34) slidably connected to the upper end of the third cylinder (33) and fixedly connected to the telescopic end of the third cylinder (33), and a clamping portion (35) installed at the upper end of the third slide seat (34); The second cylinder (31) and the third cylinder (33) are used to drive the clamping part (35) to move in the Z-axis direction and the X-axis direction respectively, and the clamping part (35) clamps the ground wire and simultaneously moves in the Z-axis direction and the X-axis direction, and bends the ground wire by 90 degrees to pick up the wire; The upper end of the base (1) is also fixedly connected to a support seat (11), the upper end of the support seat (11) is provided with a wire groove for accommodating a wire harness, and the upper end of the support seat (11) is connected to a cover plate (12) for limiting the position of the wire harness; The upper end of the base (1) is also connected to a conductor pressing portion (2), and the conductor pressing portion (2) comprises a vertical plate (13) fixedly connected to the upper end of the base (1), a cylinder (21) fixedly connected to one side of the vertical plate (13), a slide seat (22) slidably connected to one side of the cylinder (21) and fixedly connected to the telescopic end of the cylinder (21), a pressing seat (23) fixedly connected to one side of the slide seat (22), and a pressing head (24) fixedly connected to the lower end of the pressing seat (23), wherein the pressing head (24) is used to press down the conductor in the wiring harness so that the conductor and the ground wire cannot be in the same horizontal plane; A slide groove (14) is provided on one side of the support seat (11), and a slide seat four (5) is slidably connected in the slide groove (14); a cylinder four (4) is fixedly connected to one side of the support seat (11), and the telescopic end of the cylinder four (4) is fixedly connected to the lower end of the slide seat four (5); an extension seat (52) is fixedly connected to one side of the slide seat four (5), and the upper end of the extension seat (52) and the lower end of the pressure seat (23) are both connected to a ground wire pre-processing unit (6); The ground wire pre-processing unit (6) comprises two groups of cavities (61) respectively opened inside the extension seat (52) and the pressure seat (23), arc grooves (65) respectively opened inside the extension seat (52) and the pressure seat (23) and connected to the cavities (61), a screw rod (62) rotatably connected to the inner wall of the cavity (61), a concave seat (63) slidably connected to the inner wall of the cavity (61) and respectively screwed to the outside of the screw rod (62), and a pressure roller (64) rotatably connected to the inner wall of the concave seat (63), and a motor (67) is fixedly connected to one side of the extension seat (52) and the pressure seat (23), and the output shaft of the motor (67) is fixedly connected to one end of the screw rod (62); The arc-shaped groove (65) inside the extension seat (52) and the pressure seat (23) is used to accommodate the ground wire. The motor (67) rotates to drive the screw rod (62) to rotate and drive the concave seat (63) to move. When the concave seat (63) moves, the pressure roller (64) contacts the outer surface of the ground wire and rolls the ground wire. The rolling treatment of the ground wire eliminates local protrusions and depressions on the ground wire, so that the upper and lower end surfaces of the plurality of ground wires are flat and can stably contact the clamping portion (35).

2. The automatic ground wire picking device for high-speed cable harness according to claim 1, characterized in that: The extension seat (52) is provided with a relief groove (51) inside for accommodating the conductor and the pressure head (24).

3. The automatic ground wire picking device for high-speed cable harness according to claim 1, characterized in that: An arc-shaped electric heating element (7) is fixedly connected to the inner wall of the arc-shaped groove (65), and the arc-shaped electric heating element (7) is used to preheat the ground wire, reduce the yield strength of the ground wire, and reduce the elastic rebound generated by the ground wire during the bending process.

4. The automatic ground wire picking device for high-speed cable harness according to claim 3 is characterized in that: The extension seat (52) and the pressure seat (23) are further provided with a mounting groove (66) in communication with the arc-shaped groove (65), and an ultrasonic transducer portion (8) is fixedly connected in the mounting groove (66), and a conduction portion (9) is fixedly connected to one side of the ultrasonic transducer portion (8), and a groove body is provided in the arc-shaped electric heating element (7), and one end of the conduction portion (9) passes through the groove body and extends outward.

5. The automatic ground wire picking device for high-speed cable harness according to claim 4, characterized in that: The ultrasonic wave generated by the ultrasonic transducer part (8) is transmitted to the ground wire through the conducting part (9), and the ultrasonic wave forms micro-vibrations inside the ground wire and promotes the movement of dislocations inside the material.

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