An automated wire cutting device for wire harness assembly

Abstract

This utility model discloses an automated wire cutting device for wire harness assembly, relating to the field of wire harness assembly. It addresses the problems in existing technologies where wires are directly fed out for cutting, resulting in left-right swaying, deviations from preset positions during cutting, and significant errors in cutting length. The wire adjustment unit includes two first upright plates welded to one side of the upper end of a workbench. A side fixing frame is connected to the outer side between the two first upright plates. An inner buffer frame is provided within the side fixing frame, and multiple through-hole slots are arrayed in the front-back direction within the inner buffer frame. Damping buffer rods are installed at the four corners between the side fixing frame and the inner buffer frame. Fixing blocks at both ends of the damping buffer rods extend into the side fixing frame and the inner buffer frame, respectively, and are rotatably connected to them via shafts. A side fixing box is connected to the inner side between the two first upright plates, and multiple stabilizing slots are arrayed in the front-back direction within the side fixing box.

Description

Technical Field

[0001] This utility model relates to the field of wire harness assembly, specifically an automated wire cutting device for wire harness assembly. Background Technology

[0002] As a core component in electrical systems for power transmission and signal transmission, wire harnesses are widely used in automotive manufacturing, aerospace, industrial equipment, home appliances, and electronic communications. Their assembly process typically includes wire cutting, terminal crimping, insulation stripping, wire separation, and bundling. Among these, wire cutting is the fundamental step in wire harness production, directly affecting the accuracy of subsequent processing and the quality of the finished product.

[0003] In manual wire cutting mode, operators need to use manual wire cutting tools (such as scissors and wire cutters) to cut the wires segment by segment according to process requirements. With the popularization of industrial automation technology, automated wire cutting equipment has gradually become the mainstream. These devices are usually equipped with pneumatic or electric drive mechanisms, control the cutting length, and use special blades to achieve rapid wire cutting. For example, the Chinese authorized patent with publication number CN 222944392 U (a wire cutting device for wire harness processing) includes a base, an operating table fixedly connected to the top of the base, a support rod vertically fixedly connected to one side of the operating table on the top surface of the base, a connecting plate fixedly connected to the top of the support rod, one end of the connecting plate extending above the operating table, an electric cylinder fixedly connected to the bottom of the extended end of the connecting plate, the output end of the electric cylinder being vertically downward, a mounting plate being provided at the bottom of the output end of the electric cylinder, a fixing plate being provided at the bottom of the mounting plate, a tool holder being provided at the bottom of the tool holder, a cutting blade being installed at the bottom of the tool holder, a cutting groove being opened below the cutting blade on the top surface of the operating table, symmetrical V-shaped grooves being provided on both sides of the cutting groove, a mounting bracket being provided at the top of each V-shaped groove, a clamping screw being threadedly connected to the top of each mounting bracket, a clamping block being rotatably connected to the bottom of each clamping screw, and an arc-shaped groove being opened at the bottom of each clamping block.

[0004] Although the aforementioned prior art has the function of pressing and cutting the line, the line is directly conveyed out for cutting. Since the line on the winding roller rotates and winds left and right, the line will swing left and right when it is directly conveyed out. The position of cutting will deviate from the preset position, and the cutting length will have a large error. Utility Model Content

[0005] The purpose of this invention is to provide an automated wire cutting device for wire harness assembly, in order to solve the problems mentioned in the background art, such as the wires being directly fed out for cutting, the wires swinging left and right, the cutting position deviating from the preset position, and the cutting length having a large error.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automated wire cutting device for wire harness assembly, comprising a workbench, a wire management adjustment unit provided on one side of the upper end of the workbench, the wire management adjustment unit comprising two first upright plates welded to one side of the upper end of the workbench, a side fixing frame connected to the outer side between the two first upright plates, an inner buffer frame provided inside the side fixing frame, a plurality of through slots arrayed in the front-back direction in the inner buffer frame, the through slots penetrating the inner buffer frame in the left-right direction, damping buffer rods installed at the four corners between the side fixing frame and the inner buffer frame, fixing blocks at both ends of the damping buffer rods extending into the side fixing frame and the inner buffer frame respectively, and rotatably connected to the side fixing frame and the inner buffer frame via shafts, a side fixing box connected to the inner side between the two first upright plates, a plurality of stabilizing slots arrayed in the front-back direction in the side fixing box, the stabilizing slots corresponding left-right to the through slots, and the diameter of the stabilizing slots gradually decreasing from the direction closer to the through slots to the direction farther away from the through slots.

[0007] Preferably, a tangent unit is provided on the other side of the upper end of the workbench. The tangent unit includes a lower fixed platform welded to the other side of the upper end of the workbench. The upper end of the lower fixed platform has a lower pressing groove arrayed in the front-back direction, and the lower pressing groove corresponds to the position of the through hole groove in the left-right direction. A C-shaped bracket is fixed on the upper end of the lower fixed platform. A driving hydraulic cylinder is installed in the center of the upper end of the C-shaped bracket. A lifting plate is installed in the inner side of the C-shaped bracket along the output rod end of the driving hydraulic cylinder. A pressing plate is installed at the lower end of the lifting plate. An upper pressing groove is opened on the lower end face of the pressing plate along the upper end of the lower pressing groove. Multiple spring rods are arrayed between the pressing plate and the lifting plate.

[0008] Preferably, a tangent is installed at the middle of the lower end of the lifting plate, and rectangular grooves are provided along the movement trajectory of the tangent on the pressing plate and the lower fixed platform. A guide plate is fixed on the outer side of the lower fixed platform along the outer side of the lower pressing groove.

[0009] Preferably, a first conveying unit is provided on the upper end of the workbench along the inner side of the alignment adjustment unit. The first conveying unit includes two second upright plates welded to the upper end of the workbench. Two sets of conveying components are symmetrically arranged between the two second upright plates. The conveying components include a first rotating gear and a second rotating gear. The first rotating gear and the second rotating gear are externally meshed with an outer conveyor belt. The conveying components also include a plurality of third rotating gears, which are located inside the outer conveyor belt and mesh with it.

[0010] Preferably, a drive motor is installed at the rear end of the second vertical plate at the rear end, and the output shaft end of the drive motor is connected to the first rotating gear on the upper conveying assembly. A fourth rotating gear is provided at the front end of the second vertical plate at the front end along the front end of the first rotating gear. The fourth rotating gear is coaxially connected with the first rotating gear, and the two fourth rotating gears are meshed together.

[0011] Preferably, the outer surface of the outer conveyor belt is provided with multiple V-shaped grooves arranged in a front-to-back direction, and the V-shaped grooves correspond to the positions of the through holes.

[0012] Preferably, a second conveying unit is provided on the upper end of the workbench between the tangential unit and the first conveying unit. The second conveying unit includes a mounting bracket welded to the upper end of the workbench. Multiple conveying pipes are fixed in a front-back array on the upper end of the mounting bracket. Conveying grooves are provided through the conveying pipes from left to right, and the positions of the conveying grooves and the through holes correspond to each other from left to right.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, the design of the inner buffer frame, damping buffer rod and stabilizing hole groove in the wire adjustment unit effectively solves the shaking problem in the wire feeding process, making the wire feeding more stable and providing a solid foundation for subsequent precise cutting. It solves the problem that the wire is directly sent out for cutting, the wire will swing left and right, the cutting position will deviate from the preset position, and the cutting length will have a large error. It significantly improves the quality and consistency of wire harness processing.

[0015] (2) In this utility model, the design of the first conveying unit and the second conveying unit, through structures such as V-shaped grooves and conveying grooves, ensures the stability of the line during the conveying process, avoids line displacement, and further improves the cutting accuracy.

[0016] (3) In this utility model, the design of the wire cutting unit includes the cooperation of the upper clamping groove, the lower clamping groove, the spring rod and the wire cutting knife, which can stably and reliably clamp the line and achieve precise cutting. At the same time, the setting of the guide plate realizes the automatic discharge of the wire bundle after cutting, reducing manual intervention and greatly improving production efficiency and automation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of an automated wire cutting device for wire harness assembly according to the present invention from a frontal perspective.

[0018] Figure 2 This is a schematic diagram of the overall structure of an automated wire cutting device for wire harness assembly according to the present invention, viewed from the rear.

[0019] Figure 3 This is a front view of an automated wire cutting device for wire harness assembly according to the present invention;

[0020] Figure 4 This is a top view of an automated wire cutting device for wire harness assembly according to the present invention;

[0021] Figure 5This is a cross-sectional view at point AA of an automated wire cutting device for wire harness assembly according to this utility model.

[0022] In the diagram: 1. Workbench; 2. Thread adjustment unit; 3. First upright plate; 4. Side fixing frame; 5. Inner buffer frame; 6. Through slot; 7. Damping buffer rod; 8. Side fixing box; 9. Stabilizing slot; 10. First conveying unit; 11. Second upright plate; 12. Conveying assembly; 13. First rotating gear; 14. Second rotating gear; 15. Outer conveyor belt; 16. Third rotating gear; 17. V-groove; 18. Drive motor; 19. Fourth rotating gear; 20. Second conveying unit; 21. Mounting bracket; 22. Conveying pipeline; 23. Conveying trough; 24. Thread cutting unit; 25. Lower fixed platform; 26. Lower clamping groove; 27. C-shaped bracket; 28. Drive hydraulic cylinder; 29. ​​Lifting plate; 30. Thread cutting knife; 31. Clamping plate; 32. Upper clamping groove; 33. Spring rod; 34. Guide plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figures 1-5 One embodiment provided by this utility model:

[0025] (1) Workbench and cable management adjustment unit

[0026] The workbench 1 serves as the supporting foundation for the entire device, providing a stable mounting platform for all components.

[0027] A cable management adjustment unit 2 is installed on one side of the upper end of the workbench 1. This unit includes two first upright plates 3 welded to one side of the upper end of the workbench 1. A side fixing frame 4 is connected to the outer side between the two first upright plates 3, and an inner buffer frame 5 is installed inside the side fixing frame 4. Multiple through slots 6 are arrayed in the front-back direction inside the inner buffer frame 5, and the through slots 6 penetrate the inner buffer frame 5 in the left-right direction, allowing the cable to be initially guided through these through slots 6. Because the cable swings when passing through the through slots 6 on the inner buffer frame 5, the inner buffer frame 5 will experience disordered longitudinal plane movement relative to the side fixing frame 4. To solve this problem, damping buffer rods 7 are installed at the four corners between the side fixing frame 4 and the inner buffer frame 5. The fixing blocks at both ends of the damping buffer rods 7 extend into the side fixing frame 4 and the inner buffer frame 5 respectively and are rotatably connected to them via shafts. The presence of the damping buffer rods 7 can effectively stabilize the inner buffer frame 5, thereby making the cable relatively stable, improving the initial stability of the cable feed, and reducing the problem of inaccurate subsequent cutting caused by cable swaying.

[0028] The inner side of the two first upright plates 3 is connected to a side fixing box 8. Multiple stabilizing slots 9 are arrayed in a front-to-back direction within the side fixing box 8. The stabilizing slots 9 correspond left-right to the through slots 6, and the diameter of the stabilizing slots 9 gradually decreases from the direction closer to the through slots 6 to the direction farther away. When the feed line passes through the stabilizing slots 9, the gradually decreasing diameter constrains the feed line, further stabilizing it and preventing instability in the feed position of subsequent conveying structures. This ensures smooth and accurate subsequent feeding, improving the overall feeding stability of the device.

[0029] (2) Tangent unit

[0030] A tangent unit 24 is provided on the other side of the upper end of the workbench 1. This unit includes a lower fixed platform 25 welded to the other side of the upper end of the workbench 1. Lower clamping grooves 26 are arranged in a front-back direction on the upper end of the lower fixed platform 25. The lower clamping grooves 26 correspond to the positions of the through hole grooves 6 on the left and right, and are used to place the line to be cut.

[0031] A C-shaped bracket 27 is fixed to the upper end of the lower fixed platform 25. A driving hydraulic cylinder 28 (which is equipped with hydraulic oil circuit, oil tank, pump body and other structures, not shown in the figure) is installed in the center of the upper end of the C-shaped bracket 27. A lifting plate 29 is installed inside the C-shaped bracket 27 along the output rod end of the driving hydraulic cylinder 28. A clamping plate 31 is installed at the lower end of the lifting plate 29. An upper clamping groove 32 is opened on the lower end face of the clamping plate 31 along the upper end of the lower clamping groove 26. When the output rod end of the driving hydraulic cylinder 28 drives the lifting plate 29 to move downward, the upper clamping groove 32 on the clamping plate 31 first contacts the line. As the output rod of the driving hydraulic cylinder 28 continues to extend, the clamping plate 31 clamps the two sides of the tangential position, realizing stable clamping of the line. Multiple spring rods 33 are arranged in an array between the clamping plate 31 and the lifting plate 29. During the clamping process, the spring rods 33 are compressed.

[0032] A wire cutter 30 is installed at the lower center of the lifting plate 29. Rectangular grooves are cut along the movement trajectory of the wire cutter 30 on both the clamping plate 31 and the lower fixed platform 25 to provide space for the cutting movement of the wire cutter 30. After the wire is stably clamped, the wire cutter 30 continues to move downward relative to the clamping plate 31 to cut the wire. A guide plate 34 is fixed on the outer side of the lower fixed platform 25 along the outer side of the lower clamping groove 26. After cutting, the output rod of the drive hydraulic cylinder 28 retracts, the drive motor 18 restarts, and the wire is fed back in. The re-entering wire pushes the already cut wire out along the guide plate 34, realizing the automatic discharge of the cut wire bundle and improving production efficiency.

[0033] (3) First conveying unit

[0034] A first conveying unit 10 is installed on the upper end of the workbench 1 along the inner side of the cable adjustment unit 2. This unit includes two second upright plates 11 welded to the upper end of the workbench 1. Two sets of conveying assemblies 12 are symmetrically arranged vertically between the two second upright plates 11. The conveying assembly 12 includes a first rotating gear 13 and a second rotating gear 14, which are externally meshed with an outer conveyor belt 15. The conveying assembly 12 also includes multiple third rotating gears 16, which are located inside the outer conveyor belt 15 and mesh with it. The multiple third rotating gears 16 can enhance the transmission stability of the outer conveyor belt 15 and ensure that the outer conveyor belt 15 will not slip during transmission. A drive motor 18 is installed at the rear end of the rear second upright plate 11. The output shaft of the drive motor 18 is connected to the first rotating gear 13 on the upper conveying assembly 12. A fourth rotating gear 19 is installed at the front end of the front second upright plate 11 along the front end of the first rotating gear 13. The fourth rotating gear 19 is coaxially connected with the first rotating gear 13, and the two fourth rotating gears 19 are meshed together. When the drive motor 18 is working, it drives the outer conveyor belt 15 to rotate through the first rotating gear 13, the fourth rotating gear 19 and other transmission components to realize the conveying of the line.

[0035] Multiple V-shaped grooves 17 are arranged in a front-to-back direction on the outer surface of the outer conveyor belt 15. The V-shaped grooves 17 correspond to the positions of the through holes 6. The line is moved into the V-shaped grooves 17. The V-shaped grooves 17 can prevent the line from shifting in the front-to-back or up-to-down direction during the conveying process, thus ensuring the stability of the conveying.

[0036] (4) Second conveying unit

[0037] A second conveying unit 20 is installed at the upper end of the workbench 1 between the tangent unit 24 and the first conveying unit 10. This unit includes a mounting bracket 21 welded to the upper end of the workbench 1. Multiple conveying pipes 22 are fixed in a front-back array at the upper end of the mounting bracket 21. Conveying grooves 23 are opened through the conveying pipes 22 from left to right, and the conveying grooves 23 correspond to the positions of the through holes 6 from left to right. After the line is conveyed by the first conveying unit 10, it enters the conveying grooves 23. The conveying pipes 22 act as limiters to prevent the line from being displaced by gravity or other environmental factors during long-distance conveying, ensuring that the line can be accurately and stably conveyed to the tangent unit 24 for cutting.

[0038] During operation, the line is pulled sequentially through the through-hole slot 6 on the inner buffer frame 5, the stabilizing hole slot 9 on the side fixing box 8, the V-shaped groove 17 between the two outer conveyor belts 15, and the conveying groove 23, finally reaching the upper end of the lower clamping groove 26 on the lower fixing platform 25. During this process, the inner buffer frame 5 and the damping buffer rod 7 stabilize the initial feed of the line, the stabilizing hole slot 9 further stabilizes the line, the V-shaped groove 17 prevents displacement during line transport, and the conveying groove 23 prevents displacement of the line during long-distance transport.

[0039] The number of rotations of the drive shaft of the drive motor 18 is monitored to precisely control the feed length of the line each time (this part is the length control of the line feed; most conveying length control currently uses this technology, which will not be described in detail). When the conveying length reaches the target length, the drive motor 18 stops working. At this time, the output rod end of the drive hydraulic cylinder 28 drives the lifting plate 29 to move downward. The upper clamping groove 32 on the clamping plate 31 first contacts the line. As the output rod of the drive hydraulic cylinder 28 continues to extend, the clamping plate 31 clamps the two sides of the cutting position, the spring rod 33 is compressed, and the cutting blade 30 continues to move downward relative to the clamping plate 31 to precisely cut the line. After cutting, the output rod of the drive hydraulic cylinder 28 retracts, the drive motor 18 restarts, feeds the line, and the re-entering line pushes the already cut line out along the guide plate 34, completing a complete cutting process.

[0040] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An automated wire cutting device for harness assembly, comprising a worktable (1), characterized in that: A cable management adjustment unit (2) is provided on one side of the upper end of the workbench (1). The cable management adjustment unit (2) includes two first upright plates (3) welded to one side of the upper end of the workbench (1). A side fixing frame (4) is connected to the outer side between the two first upright plates (3). An inner buffer frame (5) is provided inside the side fixing frame (4). Multiple through slots (6) are arranged in a front-back direction inside the inner buffer frame (5). The through slots (6) penetrate the inner buffer frame (5) in the left-right direction. Cable management adjustment units (2) are installed at the four corners between the side fixing frame (4) and the inner buffer frame (5). There is a damping buffer rod (7), and the fixing blocks at both ends of the damping buffer rod (7) extend into the side fixing frame (4) and the inner buffer frame (5) respectively and are rotatably connected to the side fixing frame (4) and the inner buffer frame (5) through the shaft. The inner side between the two first upright plates (3) is connected to a side fixing box (8). Multiple stabilizing slots (9) are arranged in a front-back direction in the side fixing box (8). The stabilizing slots (9) correspond to the positions of the through slots (6) on the left and right, and the diameter of the stabilizing slots (9) gradually decreases from the direction close to the through slots (6) to the direction away from the through slots (6).

2. An automatic wire cutting device for harness assembly according to claim 1, characterized by: A tangent unit (24) is provided on the other side of the upper end of the workbench (1). The tangent unit (24) includes a lower fixed platform (25) welded to the other side of the upper end of the workbench (1). The lower fixed platform (25) has a lower pressing groove (26) arranged in a front-back direction on the upper end. The lower pressing groove (26) corresponds to the position of the through hole groove (6) on the left and right. A C-shaped bracket (27) is fixed on the upper end of the lower fixed platform (25). A driving hydraulic cylinder (28) is installed in the center of the upper end of the C-shaped bracket (27). A lifting plate (29) is installed inside the C-shaped bracket (27) along the output rod end of the driving hydraulic cylinder (28). A pressing plate (31) is installed at the lower end of the lifting plate (29). An upper pressing groove (32) is opened on the lower end face of the pressing plate (31) along the upper end of the lower pressing groove (26). Multiple spring rods (33) are arranged in an array between the pressing plate (31) and the lifting plate (29).

3. The automated wire cutting device for wire harness assembly according to claim 2, characterized in that: A cutting blade (30) is installed in the middle of the lower end of the lifting plate (29). Rectangular grooves are opened on the pressing plate (31) and the lower fixed platform (25) along the movement trajectory of the cutting blade (30). A guide plate (34) is fixed on the outer side of the lower fixed platform (25) along the outer side of the lower pressing groove (26).

4. An automated wire cutting device for wiring harness assembly as defined in claim 2, wherein: The upper end of the workbench (1) is provided with a first conveying unit (10) along the inner side of the line adjustment unit (2). The first conveying unit (10) includes two second upright plates (11) welded to the upper end of the workbench (1). Two sets of conveying components (12) are symmetrically arranged between the two second upright plates (11). The conveying components (12) include a first rotating gear (13) and a second rotating gear (14). The first rotating gear (13) and the second rotating gear (14) are meshed with an outer conveyor belt (15). The conveying components (12) also include a plurality of third rotating gears (16). The third rotating gears (16) are located inside the outer conveyor belt (15) and mesh with the outer conveyor belt (15).

5. An automated wire cutting device for wiring harness assembly as defined in claim 4, wherein: A drive motor (18) is installed at the rear end of the second vertical plate (11). The output shaft of the drive motor (18) is connected to the first rotating gear (13) on the upper conveying assembly (12). A fourth rotating gear (19) is provided at the front end of the second vertical plate (11) along the front end of the first rotating gear (13). The fourth rotating gear (19) is coaxially connected with the first rotating gear (13), and the two fourth rotating gears (19) are meshed together.

6. An automated wire cutting device for wiring harness assembly as defined in claim 4, wherein: The outer surface of the outer conveyor belt (15) is provided with multiple V-shaped grooves (17) arranged in a front-back direction, and the V-shaped grooves (17) correspond to the positions of the through holes (6) on the left and right.

7. An automated wire cutting device for wiring harness assembly as defined in claim 4, wherein: A second conveying unit (20) is provided between the tangent unit (24) and the first conveying unit (10) at the upper end of the workbench (1). The second conveying unit (20) includes a mounting bracket (21) welded to the upper end of the workbench (1). Multiple conveying pipes (22) are fixed in a front-back array at the upper end of the mounting bracket (21). A conveying groove (23) is opened through the conveying pipe (22) in the left and right directions. The conveying groove (23) corresponds to the position of the through hole groove (6) in the left and right directions.

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