Multi-parallel wire bundle twisting mechanism, code scanning system, detection system, code scanning method and detection method

Abstract

The application discloses a plurality of side-by-side wire harnesses, a code scanning system, a detection system, a code scanning method and a detection method. The wire twisting mechanism comprises a first driving member, a first wire twisting member and a second wire twisting member. The first wire twisting member is provided with a first clamping groove, and the second wire twisting member is provided with a second clamping groove. The center lines of the groove bottoms of the plurality of first clamping grooves are arranged in a radial stepped manner with the first boundary line as a boundary. The arrangement rule of the plurality of second clamping grooves is the same as that of the plurality of first clamping grooves. The code scanning system comprises a rack, a code scanning gun and the wire twisting mechanism. The detection system comprises a rack, a visual camera and the wire twisting mechanism. The code scanning method comprises wire harness alignment, fan-shaped expansion and code scanning. The detection method comprises wire harness alignment, fan-shaped expansion and photographing detection. The application enables the plurality of side-by-side wire harnesses to be expanded in the horizontal and vertical directions at the same time and not to be blocked, realizes one-time all-barcode scanning or appearance detection, and significantly improves the production line automation operation efficiency, detection coverage and product yield.

Description

Technical Field

[0001] This invention belongs to the field of wire harness processing technology, and in particular relates to a multi-parallel wire harness twisting mechanism, a barcode scanning system, a detection system, a barcode scanning method, and a detection method. Background Technology

[0002] Wire harness assembly is a crucial step in the manufacturing process of electronic and electrical products. It involves assembling wire harnesses into housings according to design requirements to achieve signal transmission or power connection functions. With the rapid development of automotive electronics, smart homes, and industrial control, the quality and efficiency of wire harness assembly directly affect the performance and production costs of end products. As electronic products evolve towards miniaturization and high density, the assembly methods of wire harnesses and housings are becoming increasingly diverse, placing higher demands on quality traceability and appearance inspection in the wire harness production process. Currently, in the wire harness production process, barcodes need to be affixed to one side of each wire harness end or directly printed with barcodes so that product information can be traced or the correct wiring sequence can be checked by scanning the barcodes; alternatively, the side areas of the wire harness ends often require visual inspection to check the quality of terminal crimping, whether there are scratches or damage to the insulation layer, and whether there are exposed conductors or other appearance defects.

[0003] However, since the barcode is affixed to one side of the wire harness end, visual inspection requires imaging of this side area. This characteristic presents a common and prominent challenge for both scanning and visual inspection operations: In actual production scenarios, multiple wire harnesses are often neatly arranged side-by-side on a carrier, such as horizontally arranged side-by-side, with small spacing between adjacent wire harnesses and extremely tight distance between the ends of the wire harnesses. Because both the barcode and the side area to be inspected are located on the same side surface of the wire harness end, in the side-by-side configuration, this side surface of each wire harness is obscured by the end entities of adjacent wire harnesses, preventing the barcode scanner or camera from reading all barcodes or capturing all side areas to be inspected at once.

[0004] To address this issue, existing technologies, such as the ABS wire harness sequence identification and alignment device disclosed in Chinese Utility Model Patent Publication No. CN221994868U, employ a clamping component to hold the end of the wire harness. A drive motor rotates the clamping component, causing the entire wire harness to rotate around its own axis, thus bringing the wire sequence to be identified under the recognition camera for identification. However, in this solution, the clamping component holds the entire free end of the wire harness, allowing the harness to rotate freely. In actual production scenarios, when scanning or inspecting multiple parallel wire harnesses, the other end of the harness is usually clamped and fixed by a carrier. For example, the end of the wire harness may have a connector attached and be secured in a positioning groove of the carrier, preventing the carrier itself from rotating. Therefore, the method of rotating the entire wire harness as described above cannot be used to expose the barcode or detection end.

[0005] If the barcode or detection side is exposed by partially twisting the scanned or detected end of the wire harness around its own axis while it is clamped, the following serious problems will occur: (1) Since the barcode and the area to be detected are only located on one side surface of the wire harness end, although this side surface may temporarily face the barcode scanner or camera during partial twisting, the torsional stress will be concentrated axially at the junction of the fixed end and the free end of the wire harness because the other end of the wire harness is fixed by the carrier. This can easily cause the internal core wire to break at this point or the connection between the core wire and the terminal to loosen, directly affecting the electrical conductivity of the product; (2) During partial twisting, the insulation layer on the outer surface of the wire harness will experience unexpected friction and compression with the inner wall of the clamping slot or the edge of the carrier, which can easily cause scratches and wear on the surface. (3) Due to the different initial postures of each wire harness when it is clamped and twisted, and the different flexibility of the wire harness itself, after applying the same twisting angle, the final orientation of the barcode surface or the side to be tested at the end of each wire harness will be random, which makes it impossible for the barcode scanner and camera to cover all wire harnesses through a unified preset field of view. The system lacks repeatability and consistency, which greatly increases the difficulty of equipment debugging and the error rate. In addition, the wire harness itself has a certain elasticity. After the external force of local twisting is removed, the end of the wire harness is prone to rebound, causing the barcode surface or the side to be tested to deviate from the preset direction again. It cannot maintain a stable posture during the short window period of scanning or testing, which affects the recognition success rate. Finally, for wire harnesses that need to be automatically inserted and other precision assembly operations, local twisting will cause the angle and posture of the end of the wire harness to undergo plastic deformation or residual twisting, deviating from the design position, making it difficult for subsequent processes to accurately position and grasp, affecting the smoothness of the entire automated production line.

[0006] In addition, some existing technologies use mechanical methods to horizontally spread the wire harness to increase the spacing and reduce obstruction. For example, a novel automatic wire separating mechanism for electronic detonator leads is disclosed in Chinese Utility Model Patent Publication No. CN217507004U. However, such mechanisms can usually only achieve simple separation in the horizontal direction and cannot create misalignment in the vertical direction. After the wire harness ends are spread out in a single plane, there is still partial obstruction on the sides, which cannot effectively solve the angle exposure problem caused by the barcode / detection area being located on the side.

[0007] Therefore, it is necessary to provide a multi-parallel wire harness twisting mechanism, a barcode scanning system, a detection system, a barcode scanning method, and a detection method to solve the above-mentioned technical problems. Summary of the Invention

[0008] The main objective of this invention is to provide a multi-parallel wire harness twisting mechanism that efficiently transforms the closing action into a fan-shaped structure in which multiple wire harnesses are simultaneously staggered in both horizontal and vertical dimensions. Each cantilever end is fully exposed and does not obstruct the others, facilitating one-time scanning and detection and improving work efficiency.

[0009] The present invention achieves the above objective through the following technical solution: a multi-parallel wire harness twisting mechanism includes a first driving member and a first twisting member and a second twisting member driven by the first driving member to move away from or move closer to each other. The first twisting member is provided with a plurality of first locking grooves, and the second twisting member is provided with a plurality of second locking grooves. The first locking grooves and the second locking grooves correspond to each other and their opening directions are opposite. The center lines of the bottom of several first locking slots are arranged in a radial, stepped manner, with a first dividing line that extends horizontally in the middle as the boundary. The center lines of the bottom of several first locking slots located to the left of the first dividing line expand upward and to the left step by step from the first dividing line. The horizontal expansion angle between each adjacent first locking slot on the left increases from the middle to the left step by step, and the vertical expansion angle between each adjacent first locking slot on the left increases from the middle to the left step by step. The center lines of the bottom of several first locking slots located to the right of the first dividing line expand downward and to the right step by step from the first dividing line. The horizontal expansion angle between each adjacent first locking slot on the right increases from the middle to the right step by step, and the vertical expansion angle between each adjacent first locking slot on the right increases from the middle to the right step by step. The arrangement pattern of the several second card slots is the same as that of the several first card slots.

[0010] Furthermore, the outlines of each of the first locking slots are the same and are all conformed to the outer surface of one side of the wire harness, and the outlines of each of the second locking slots are the same and are all conformed to the outer surface of the other side of the wire harness.

[0011] Furthermore, one end of the first locking slot is a first insert end and the other end is a first protrusion end; for the plurality of first locking slots located to the left of the first dividing line, the first insert end of one end of each first locking slot is lower than the first protrusion end of the other end; for the plurality of first locking slots located to the right of the first dividing line, the first insert end of one end of each first locking slot is higher than the first protrusion end of the other end. One end of the second locking slot is a second insertion end and the other end is a second extension end; for the plurality of second locking slots located to the left of the second dividing line, the second insertion end of one end of each second locking slot is lower than the second extension end of the other end; for the plurality of second locking slots located to the right of the second dividing line, the second insertion end of one end of each second locking slot is higher than the second extension end of the other end.

[0012] Furthermore, the first yarn twisting component includes a first movable plate connected to the first driving component and a first yarn twisting plate detachably connected to the first movable plate, and a plurality of first locking slots are disposed at the ends of the first yarn twisting plate; the second yarn twisting component includes a second movable plate connected to the first driving component and a second yarn twisting plate detachably connected to the second movable plate, and a second locking slot is disposed at the ends of the second yarn twisting plate.

[0013] The second objective of this invention is to provide a barcode scanning system for multiple parallel wire harnesses, which integrates the wire twisting mechanism with the barcode scanner. After twisting, all wire harness barcodes are fully exposed and do not obstruct each other, thus solving the problem of parallel wire harnesses being unable to be scanned in one go due to obstruction.

[0014] The present invention achieves the above-mentioned objective through the following technical solution: a multi-parallel wire harness scanning system, which includes a frame, a barcode scanner mounted on the frame, and the aforementioned multi-parallel wire harness twisting mechanism, wherein the barcode scanner is mounted on one side of the multi-parallel wire harness twisting mechanism.

[0015] Furthermore, the barcode scanner and the multiple parallel wire harness twisting mechanism are both arranged along direction A, with direction A inclined and forming a set angle with the vertical direction, and the orientation of the first locking slot and the second locking slot are both along direction A.

[0016] Furthermore, the barcode scanner is mounted on a support frame, which is driven by a second driving component to move along direction A. A light source is mounted on the support frame, and the light source is located above the multiple parallel wire harness twisting mechanism.

[0017] The third objective of this invention is to provide a multi-wire harness detection system that integrates a wire twisting mechanism with a visual inspection camera. After twisting, the side areas of each wire harness to be inspected are fully exposed and do not obstruct each other. The camera can complete the acquisition of appearance images of all wire harnesses in one shot, which significantly improves detection efficiency and coverage and avoids missed detections and misjudgments.

[0018] The present invention achieves the above-mentioned objective through the following technical solution: a multi-parallel wire harness detection system, which includes a frame, a vision camera mounted on the frame, and the aforementioned multi-parallel wire harness twisting mechanism, wherein the vision camera is mounted on one side of the multi-parallel wire harness twisting mechanism.

[0019] The fourth objective of this invention is to provide a method for scanning multiple parallel wire harnesses. Through a three-step process of wire harness alignment, wire twisting and unfolding, and barcode scanner adjustment and scanning, the method achieves efficient, non-destructive, and one-time scanning of barcodes for multiple wire harnesses.

[0020] This invention achieves the above objective through the following technical solution: a method for scanning multiple parallel wire harnesses, comprising the following steps: Step S1, wire harness alignment: Position multiple parallel wire harnesses along direction A, and move the positioned multiple parallel wire harnesses to the multiple parallel wire harness twisting mechanism. The inclination direction of the first locking groove and the second locking groove is consistent with the inclination direction of the wire harness. The end of each wire harness to be scanned corresponds exactly to one of the first locking grooves on the first twisting component and one of the second locking grooves on the second twisting component. Step S2: Closing and twisting the wires to unfold the wire bundle into a fan shape: Activate the first driving component, driving the first and second wire twisting components to approach each other along direction A. As the closing action occurs, the first and second locking slots respectively engage with the lower and upper outer surfaces of the wire bundle along its tilt direction, achieving tilted enclosure. The wire bundle on the left gradually shifts to the upper left, and the wire bundle on the right gradually shifts to the lower right. Finally, the ends of multiple parallel wire bundles to be scanned form a fan-shaped unfolded structure with the left side higher and the right side lower. Each wire bundle is staggered in both horizontal and vertical dimensions, and the ends to be scanned are fully exposed and do not obstruct each other. At the same time, the contours of the first and second locking slots are conformally adapted to the outer surface of the wire bundle, forming a wedge-shaped clamping force after closing, so that the wire bundle remains stable in the unfolded posture. Step S3: Adjust the position of the barcode scanner and perform scanning: Based on the fan-shaped posture of the wire harness after it is unfolded, move the barcode scanner to the optimal scanning distance and angle so that the lens of the barcode scanner is facing the barcode area on the end of the wire harness to be scanned, ensuring that all barcodes are within the effective field of view of the barcode scanner. Then start the barcode scanner to scan the barcode information on all wire harnesses at once.

[0021] The fifth objective of this invention is to provide a method for detecting multiple parallel wire harnesses. Through a three-step process of wire harness alignment, wire twisting and unfolding, and camera adjustment and photographic inspection, a one-time, all-round, and non-destructive visual inspection of the appearance quality of multiple wire harnesses to be inspected can be achieved.

[0022] This invention achieves the above objective through the following technical solution: a method for detecting multiple parallel wire harnesses, comprising the following steps: Step S10, wire harness alignment: Position multiple parallel wire harnesses along direction A, and move the positioned multiple parallel wire harnesses to the multiple parallel wire harness twisting mechanism. The inclination direction of the first locking groove and the second locking groove is consistent with the inclination direction of the wire harness. The end of each wire harness to be tested corresponds exactly to one of the first locking grooves on the first twisting piece and one of the second locking grooves on the second twisting piece. Step S20: Closing and twisting the wires to unfold the wire harness into a fan shape: Activate the first driving component to drive the first and second wire twisting components to approach each other along direction A. As the closing action occurs, the first and second locking slots respectively engage with the lower and upper outer surfaces of the wire harness along the tilt direction, achieving tilted enclosure. The wire harness on the left gradually shifts to the upper left, and the wire harness on the right gradually shifts to the lower right. Finally, the ends of multiple parallel wire harnesses to be detected form a fan-shaped unfolding structure with the left side higher and the right side lower. Each wire harness is staggered in both horizontal and vertical dimensions, and the ends to be detected are fully exposed and do not obstruct each other. At the same time, the contours of the first and second locking slots are conformally adapted to the outer surface of the wire harness, forming a wedge-shaped clamping force after closing, so that the wire harness remains stable in the unfolded posture. Step S30: Adjust the position of the vision camera and perform image detection: Based on the fan-shaped posture of the wire harness after it is unfolded, move the vision camera to the optimal shooting distance and angle so that the lens of the vision camera is facing the end of the wire harness to be detected, ensuring that the detection ends of all wire harnesses are within the effective field of view of the vision camera. Then, start the vision camera and take images to detect the ends of all wire harnesses to be detected at once.

[0023] Compared with existing technologies, the beneficial effects of the multi-parallel wire harness twisting mechanism, barcode scanning system, detection system, barcode scanning method, and detection method of this invention are as follows: The multi-parallel wire harness twisting mechanism allows multiple parallel wire harnesses to unfold simultaneously in a staggered manner in both horizontal and vertical directions without obstructing each other, thereby achieving one-time scanning of all barcodes or appearance inspection, significantly improving the efficiency of automated production line operations, inspection coverage, and product yield. Specifically: (1) The multi-parallel wire harness twisting mechanism provided by the present invention sets radially stepped locking grooves on the first and second twisting parts, and expands the left locking groove to the upper left and the right locking groove to the lower right with the middle dividing line as the boundary. This efficiently transforms the closing action into a fan-shaped structure in which multiple wire harnesses are simultaneously staggered in both horizontal and vertical dimensions. Each cantilever end is fully exposed and does not obstruct each other. The contour of the locking groove is adapted to the outer surface of the wire harness, so that the wire harness only performs rigid translation without twisting when it is unfolded, avoiding quality problems such as core wire breakage, terminal loosening and insulation layer damage. The wedge-shaped clamping force formed after closing keeps the wire harness in a stable posture and does not return to its original position, ensuring repeatability. (2) The multi-parallel wire harness scanning system provided by the present invention integrates the wire twisting mechanism with the barcode scanner. After twisting, all wire harness barcodes are fully exposed and do not obstruct each other. The barcode scanner can read all barcodes in one scan, solving the problem of being unable to scan all barcodes at once due to the obstruction of parallel wire harnesses. The wire twisting mechanism and the barcode scanner are inclined along the A direction, and the locking groove is set along the A direction. The barcode scanner is adjusted by moving along the A direction through the second driving component to accurately match the tilt angle and fan-shaped posture of the wire harness, ensuring that the lens is facing the barcode surface and the optical axis is perpendicular to the barcode plane, so as to obtain the best reading effect. It can adapt to the special working conditions of the wire harness being inclined along the A direction. The whole process avoids product damage, the control logic is simple, and the production cycle is short, providing an efficient and reliable non-destructive barcode scanning solution for wire harness assembly production lines.

[0024] (3) The multi-wire harness detection system provided by the present invention integrates the wire twisting mechanism with the visual inspection camera. After twisting, the side areas of each wire harness to be inspected are fully exposed and do not obstruct each other. The camera can complete the acquisition of the appearance image of all wire harnesses in one photo, which significantly improves the detection efficiency and coverage and avoids missed detection and misjudgment. The wire twisting mechanism and the visual inspection camera are adjusted by the second driving component along the A direction to precisely match the tilt angle of the wire harness, ensuring that the optical axis is perpendicular to the detection area, the image is clear and the field of view is consistent, and it can adapt to the special working conditions of the wire harness being tilted along the A direction. During the detection process, the wire harness only moves in translation and does not twist, without plastic deformation or residual twist, ensuring that the positioning accuracy of subsequent precision assembly processes is not affected. (4) The multi-parallel wire harness scanning method provided by the present invention achieves efficient, non-destructive, and one-time scanning of multiple wire harness barcodes through a three-step process of wire harness alignment, wire twisting and unfolding, and barcode scanner adjustment and scanning. The wire harness is aligned along direction A and is consistent with the tilt direction of the clamping groove to ensure accurate initial positioning of the wire twisting. The wire twisting and unfolding allows the wire harness to unfold only in translation without twisting, protecting the electrical performance and appearance integrity. The wedge clamping force locks the fan-shaped posture to prevent return to position. The barcode scanner moves and adjusts along direction A to accurately align with the unfolded tilted barcode surface, and reads all barcodes in one go without repeated adjustment. The scanning method has a simplified process, matching cycle time, and good repeatability, and is suitable for barcode traceability scenarios in large-volume wire harness production lines in fields such as automotive electronics, smart home, and industrial control. (5) The multi-parallel wire harness inspection method provided by the present invention achieves one-time, all-round, and non-destructive visual inspection of the appearance quality of multiple wire harnesses through a three-step process of wire harness alignment, wire twisting and unfolding, and camera adjustment and photographing inspection. The wire harness alignment along direction A ensures accurate basic wire twisting and unfolding. Wire twisting and unfolding allows each wire harness to be staggered in both horizontal and vertical directions at the same time. One photograph covers the entire inspection area, significantly improving efficiency. The wire harness is not twisted, the insulation layer is not damaged, and there is no stress concentration at the terminal connection. The camera is moved and adjusted along direction A to accurately match the tilt angle of the wire harness, resulting in clear imaging and a unified field of view. The angle and posture of the wire harness are consistent before and after inspection, which does not affect subsequent assembly. Wire twisting and unfolding are achieved at the same time, providing an efficient and reliable technical means for wire harness appearance quality control and batch traceability. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the multi-parallel wire harness twisting mechanism according to Embodiment 1 of the present invention; Figure 2 This is a schematic diagram of the arrangement of the first locking groove on the first twisting component according to Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the arrangement structure of the first locking groove on the first twisting component of the present invention from another angle; Figure 4 This is a schematic diagram of the arrangement of the second locking groove on the second twisting member in Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the structure of multiple parallel wire bundles positioned on a carrier before twisting wires according to Embodiment 1 of the present invention; Figure 6 This is a schematic diagram of the structure of multiple parallel wire harnesses after twisting in Embodiment 1 of the present invention; Figure 7 This is a schematic diagram of the main structure of the multi-wire harness scanning system according to Embodiment 2 of the present invention; Figure 8 This is a schematic diagram of the multi-wire harness scanning system of Embodiment 2 of the present invention from another angle; Figure 9 This is a schematic diagram of a multi-wire harness detection system according to Embodiment 4 of the present invention; The numbers in the diagram represent: Multiple parallel wire harness scanning system-100; wire harness-200, multiple parallel wire harness detection system-300; barcode-400; frame-1, barcode scanner-2, support frame-21, second drive unit-22, light source-23, vision camera-4, carrier-5, positioning slot-51; multiple parallel wire harness twisting mechanism-3, first drive unit-31, first twisting component-32, first locking slot-321, first insertion end-3211, first extension end-3212, first dividing line-322, first moving plate-323, first twisting plate-324, second twisting component-33, second locking slot-331, second insertion end-3311, second extension end-3312, second dividing line-332, second moving plate-333, second twisting plate-334. Detailed Implementation

[0026] Example 1: Please refer to Figures 1-6 This embodiment is a multi-wire harness twisting mechanism 3, which includes a first driving member 31 and a first twisting member 32 and a second twisting member 33 driven by the first driving member 31 to move away from or close to each other. The first twisting member 32 is provided with a plurality of first locking grooves 321 for locking one side of the outer surface of the wire harness; the second twisting member 33 is provided with a plurality of second locking grooves 331 for locking the other side of the outer surface of the wire harness. The first locking grooves 321 and the second locking grooves 331 correspond to each other and their opening directions are opposite. For example, the opening of the first locking groove 321 faces upward and the opening of the second locking groove 331 faces downward. A first locking groove 321 and its corresponding second locking groove 331 are locked together on the outer periphery of a wire harness 200.

[0027] The center lines of the bottom of several first locking slots 321 are arranged in a radial, stepped pattern, with the first dividing line 322, which is located in the middle and extends horizontally, as the boundary. The center lines of the bottom of the first locking slots 321 decrease sequentially from left to right. Specifically, the center lines of the bottom of the multiple first locking slots 321 located to the left of the first dividing line 322 expand upward and to the left step by step from the first dividing line 322. The horizontal expansion angle between each adjacent first locking slot 321 on the left increases sequentially from the middle to the left, and the vertical expansion angle between each adjacent first locking slot 321 on the left increases sequentially from the middle to the left. The horizontal and vertical expansion angles increase sequentially, and the specific values ​​of these angles are set according to the actual situation and are not limited here. The center lines of the bottom of the multiple first locking slots 321 located to the right of the first dividing line 322 expand to the lower right in stages from the first dividing line 322. The horizontal expansion angle between each adjacent first locking slot 321 on the right increases sequentially from the middle to the right, and the vertical expansion angle between each adjacent first locking slot 321 on the right increases sequentially from the middle to the right. The specific values ​​of these angles are set according to the actual situation and are not limited here.

[0028] The arrangement of the several second locking slots 331 is exactly the same as that of the several first locking slots 321. The center lines of the bottom of the several second locking slots 331 are arranged in a radial, stepped pattern, with the second dividing line 332, which is located in the middle and extends horizontally, as the boundary. The center lines of the bottom of the second locking slots 331 decrease from left to right. Specifically, the center lines of the bottom of the multiple second locking slots 331 located to the left of the second dividing line 332 expand upward and to the left step by step from the second dividing line 332. The horizontal expansion angle between each adjacent second locking slot 331 on the right increases from the middle to the left step by step, and the vertical expansion angle between each adjacent second locking slot 331 on the right increases from the middle to the left step by step. The horizontal and vertical expansion angles are set according to the actual situation and are not limited here. The center lines of the bottom of the multiple second locking slots 331 located to the right of the second dividing line 332 expand to the lower right step by step from the second dividing line 332. The horizontal expansion angle between each adjacent second locking slot 331 on the right side increases from the middle to the right step by step, and the vertical expansion angle between each adjacent second locking slot 331 on the right side increases from the middle to the right step by step. The specific values ​​of the horizontal and vertical expansion angles are set according to the actual situation and are not limited here.

[0029] Each of the first locking slots 321 has the same outline and is contoured to one side of the outer surface of the wire harness. Each of the second locking slots 331 has the same outline and is contoured to the other side of the outer surface of the wire harness. The first dividing line 322 and the second dividing line 332 correspond to each other in the vertical direction, and both the first dividing line 322 and the second dividing line 332 are virtual reference lines, used to define the left and right boundaries of each locking slot.

[0030] Each first locking slot 321 has a first insertion end 3211 at one end and a first extension end 3212 at the other end; the first insertion end 3211 at one end of each of the multiple first locking slots 321 located to the left of the first dividing line 322 is lower than the first extension end 3212 at the other end; the first locking slots 321 located to the right of the first dividing line 322 have a first insertion end 3211 at one end higher than the first extension end 3212 at the other end. Each second locking slot 331 has a second insertion end 3311 at one end and a second extension end 3312 at the other end; the second locking slots 331 located to the left of the second dividing line 332 have a second insertion end 3311 at one end lower than the second extension end 3312 at the other end of each second locking slot 331; the second locking slots 331 located to the right of the second dividing line 332 have a second insertion end 3311 at one end higher than the second extension end 3312 at the other end of each second locking slot 331.

[0031] The first thread twisting member 32 and the second thread twisting member 33 have the same or similar structures. Specifically, the first thread twisting member 32 includes a first movable plate 323 connected to the first driving member 31 and a first thread twisting plate 324 detachably connected to the first movable plate 323. The first driving member 31 is a cylinder, an electric cylinder, or a motor. The first movable plate 323 extends perpendicular to the length direction of the cylinder. The first movable plate 323 and the first thread twisting plate 324 are arranged perpendicularly, that is, the first thread twisting plate 324 extends parallel to the length direction of the cylinder. A plurality of first locking grooves 321 are provided at the ends of the first thread twisting plate 324. The second thread twisting component 33 includes a second movable plate 333 connected to the first driving component 31 and a second thread twisting plate 334 detachably connected to the second movable plate 333. The first driving component 31 is a cylinder, an electric cylinder, or a motor. The second movable plate 333 extends perpendicular to the length direction of the cylinder. The second movable plate 333 and the second thread twisting plate 334 are arranged perpendicularly, that is, the second thread twisting plate 334 extends parallel to the length direction of the cylinder. The second locking groove 331 is provided at the end of the second thread twisting plate 334. The L-shaped structure, which uses a moving plate for force transmission and a cutting plate for precise forming, separates the functional areas. Its core advantages are: (1) After wear, only the cutting plate with complex locking grooves needs to be replaced, which greatly reduces maintenance costs and supports rapid model changeover; (2) In terms of movement, the layout parallel to the cylinder allows the locking grooves to slide into the wire harness along the tilt direction and close, forming a stable wedge clamping force and avoiding hard collision damage; (3) The small-volume cutting plate is easy to process and surface harden, while the vertical connection between the moving plate and the cutting plate enhances the bending rigidity when closing. The overall design takes into account durability, model changeover flexibility, movement accuracy and compact space requirements with a minimal number of parts.

[0032] When the wire harnesses 200 arrive, they are arranged horizontally side by side. Multiple wire harnesses 200 are divided into group A wire harnesses on the left and group B wire harnesses on the right by the first dividing line 322 and the second dividing line 332. When the first driving member 31 drives the first twisting member 32 and the second twisting member 33 to approach the wire harnesses 200, the group A wire harnesses on the left shift to the upper left in sequence, and the group B wire harnesses on the right shift to the lower right in sequence. This causes the cantilevered ends of the multiple parallel wire harnesses 200 to form a fan-shaped structure with the left side higher and the right side lower. The cantilevered ends of each wire harness 200 move away from each other to the left and right, fully exposing the surface of each wire harness terminal or the barcode 400 therein, which facilitates clear scanning of all barcodes 400 or visual inspection of whether there are any abnormalities on the terminal surface.

[0033] By setting first locking grooves 321 and second locking grooves 331 arranged in a radial, stepped pattern on the first twisting member 32 and the second twisting member 33 respectively, the horizontal closing action is efficiently transformed into the directional unfolding of multiple parallel wire harnesses 200. The contour of each locking groove is conformally adapted to the outer surface of the wire harness 200, so that the wire harness 200 only performs rigid translational motion during unfolding without twisting around its own axis, avoiding surface wear or core wire damage. At the same time, the locking grooves form a wedge-shaped clamping force when closing, keeping the wire harness 200 in a stable fan-shaped posture without returning to its original position, further improving the accuracy of barcode scanning or visual photography. The entire unfolding process only requires one closing to simultaneously achieve horizontal separation, vertical misalignment, and posture locking, without secondary adjustments, simplifying the control logic and shortening the production cycle. More importantly, using the first dividing line 322 and the second dividing line 332 as boundaries, the left-side locking slots expand upwards to the left, and the right-side locking slots expand downwards to the right, causing the cantilevered ends of the wire harness 200 to be misaligned in both horizontal and vertical dimensions. This allows for reading barcodes at the cantilevered ends or performing visual inspection, ensuring that the cantilevered ends are fully exposed and do not obstruct each other. All barcodes can be scanned at once, resulting in a high success rate and effectively avoiding missed or incorrect scans. Alternatively, all information can be captured at once, ensuring the accuracy of visual inspection. Furthermore, the entire multi-wire harness twisting mechanism 3 consists only of the first driving component 31, the first twisting component 32, and the second twisting component 33. This compact structure is cost-effective and easy to maintain, effectively solving the problem of existing multi-wire harnesses being difficult to scan barcodes or take visual images of at once due to mutual obstruction.

[0034] Example 2: Please refer to Figures 7-8 This embodiment is a multi-parallel wire harness scanning system 100, which includes a frame 1 and a barcode scanner 2 mounted on the frame 1, and a multi-parallel wire harness twisting mechanism 3 as described in Embodiment 1. The barcode scanner 2 is mounted on one side of the multi-parallel wire harness twisting mechanism 3.

[0035] In this embodiment, since the multiple parallel wire harness twisting mechanism 3 forms a fan-shaped structure with the cantilevered ends of the multiple parallel wire harnesses 200 higher on the left and lower on the right, the barcode scanner 2 is positioned on the right side of the multiple parallel wire harness twisting mechanism 3 to facilitate scanning the barcodes on the multiple wire harnesses 200 at once. In other embodiments, if the arrangement of the first locking slot 321 and the second locking slot 331 of the multiple parallel wire harness twisting mechanism 3 is symmetrical to the arrangement in Embodiment 1, then the cantilevered ends of the multiple parallel wire harnesses 200 form a fan-shaped structure with the cantilevered ends lower on the left and higher on the right. In this case, the barcode scanner 2 is positioned on the left side of the multiple parallel wire harness twisting mechanism 3 to facilitate scanning the barcodes on the multiple wire harnesses 200 at once. Therefore, the position of the barcode scanner 2 can be adjusted according to the specific arrangement of the locking slots of the multiple parallel wire harness twisting mechanism 3, and the specific position of the barcode scanner 2 is not limited.

[0036] During assembly, the wire harness 200 needs to be tilted along direction A in its width direction. Therefore, each wire harness 200 is positioned on the carrier 5 along direction A. The carrier 5 has several positioning slots 51 extending along direction A, arranged horizontally, but each slot extends along direction A. Similarly, the barcode scanner 2 and the wire twisting mechanism 3 are both positioned along direction A, tilted at a set angle to the vertical. The width direction of the wire harness 200 is along direction A, and the tilt angle matches the actual tilt angle of the wire harness. The actual tilt angle of the wire harness is adjusted accordingly, for example, to 30°, 45°, 60°, or other set angles, which are not limited here. Specifically, the first locking slot 321 and the second locking slot 331 both face direction A. The opening of the first locking slot 321 faces upwards in direction A, and the opening of the second locking slot 331 faces downwards in direction A. The barcode scanner 2 is mounted on a support frame 21, which is driven by a second driving component 22 to move along direction A. The second driving component 22 can be a pneumatic cylinder, an electric cylinder, or a motor. A light source 23 is also mounted on the support frame 21, located above the multi-parallel wire harness twisting mechanism 3.

[0037] Example 3: This example provides a method for scanning multiple parallel wire harnesses, which is based on the multiple parallel wire harness scanning system 100 described in Example 2, and includes the following steps: Step S1, wire harness alignment: Multiple wire harnesses 200 are placed into the corresponding positioning slots 51 on the carrier 5 along direction A. The carrier 5 containing the wire harnesses 200 is conveyed to the wire twisting mechanism 3 of multiple parallel wire harnesses by an external conveyor line. The tilt direction of the wire harnesses 200 is consistent with the tilt direction of the first locking slot 321 and the second locking slot 331. After the carrier 5 is in place, the end to be scanned of each wire harness 200 corresponds exactly to a first locking slot 321 on the first twisting member 32 and a second locking slot 331 on the second twisting member 33. Step S2: Close the twisted wires to make the wire harness unfold into a fan shape: Activate the first driving component 31, driving the first twisted wire component 32 and the second twisted wire component 33 to move closer to each other along direction A. As the closing action occurs, the first locking groove 321 and the second locking groove 331 respectively engage with the lower and upper outer surfaces of the wire harness 200 along the tilt direction, achieving tilted enclosure; the wire harness located to the left of the dividing line (first dividing line 322, second dividing line 332) gradually shifts to the upper left under the guidance of the locking groove on the left, and the wire harness located to the left of the dividing line (first dividing line 322, second dividing line 332) gradually shifts to the upper left. 322, the wire bundle on the right side of the second dividing line 332) is gradually shifted to the lower right under the guidance of the right-side locking groove. Finally, the scanning ends of multiple parallel wire bundles 200 form a fan-shaped unfolding structure with the left side higher and the right side lower. Each wire bundle is staggered in both horizontal and vertical dimensions, and the scanning ends are fully exposed and do not obstruct each other. At the same time, the contours of the first locking groove 321 and the second locking groove 331 are conformally adapted to the outer surface of the wire bundle. After closing, they form a wedge-shaped clamping force, which keeps the wire bundle 200 stable in the unfolded posture and does not twist or return to its original position. Step S3: Adjusting the barcode scanner position and performing scanning: Based on the fan-shaped posture of the unfolded wire harness 200, the second drive component 22 drives the support frame 21 to move along direction A, adjusting the barcode scanner 2 to the optimal scanning distance and angle, so that the lens of the barcode scanner 2 is directly facing the barcode area on the end of the wire harness 200 to be scanned, ensuring that all barcodes are within the effective field of view of the barcode scanner 2; turn on the light source 23 set above the wire twisting mechanism 3 of multiple parallel wire harnesses to provide uniform and sufficient illumination for the end of the wire harness 200 to be scanned, eliminating shadows and reflection interference; then start the barcode scanner 2 to scan the barcode information on all wire harnesses 200 at once, and can also determine whether the arrangement order of the wire harnesses 200 is incorrect based on the barcode information. This determination method is existing technology and will not be described in detail here. Since the ends of each wire harness 200 to be scanned are fully unfolded and do not obstruct each other, the barcode scanner 2 can read all barcodes simultaneously without multiple adjustments or repeated scanning, improving scanning efficiency.

[0038] Example 4: Please refer to Figure 9 This embodiment is a multi-parallel wire harness detection system 300, which includes a frame 1 and a vision camera 4 mounted on the frame 1, and a multi-parallel wire harness twisting mechanism 3 as described in Embodiment 1. The vision camera 4 is mounted on one side of the multi-parallel wire harness twisting mechanism 3.

[0039] The multi-wire harness detection system 300 is similar in structure to the multi-wire harness barcode scanning system 100 in Embodiment 2, except that the barcode scanner 2 is replaced by a vision camera 4. The structure and arrangement of other components such as the frame 1, the multi-wire harness twisting mechanism 3, the support frame 21, the second drive component 22, and the light source 23 are the same as in Embodiment 2, and will not be described again here.

[0040] Example 5: This example provides a method for detecting multiple parallel wire harnesses, which is based on the multiple parallel wire harness detection system 300 described in Example 4, and includes the following steps: Step S10, wire harness alignment: Multiple wire harnesses 200 are respectively placed into the corresponding positioning slots 51 on the carrier 5 along direction A. The carrier 5 containing the wire harnesses 200 is conveyed by an external conveyor line to the wire twisting mechanism 3 for multiple parallel wire harnesses. The tilt direction of the wire harnesses 200 is consistent with the tilt direction of the first locking slot 321 and the second locking slot 331. After the carrier 5 is in place, the end to be tested of each wire harness 200 corresponds exactly to a first locking slot 321 on the first twisting piece 32 and a second locking slot 331 on the second twisting piece 33. Step S20: Closing and twisting the wires to make the wire harness unfold into a fan shape: Activate the first driving component 31 to drive the first twisting component 32 and the second twisting component 33 to move closer to each other along direction A. As the closing action occurs, the first locking groove 321 and the second locking groove 331 respectively engage with the lower and upper outer surfaces of the wire harness 200 along the tilt direction, achieving tilted enclosure. The wire harness located to the left of the dividing line (first dividing line 322, second dividing line 332) gradually shifts to the upper left under the guidance of the locking groove on the left side, and the wire harness located to the left of the dividing line (first dividing line 322, second dividing line 332) gradually shifts to the upper left. 322, the wire harness on the right side of the second dividing line 332) is gradually shifted to the lower right under the guidance of the right-side locking groove. Finally, the test ends of multiple parallel wire harnesses 200 form a fan-shaped unfolding structure with the left side higher and the right side lower. Each wire harness is staggered in both horizontal and vertical dimensions, and the test ends are fully exposed and do not obstruct each other. At the same time, the contours of the first locking groove 321 and the second locking groove 331 are conformally adapted to the outer surface of the wire harness. After closing, they form a wedge-shaped clamping force, which keeps the wire harness 200 stable in the unfolded posture and prevents it from twisting or returning to its original position. Step S30: Adjusting the position of the vision camera and performing image detection: Based on the fan-shaped posture of the unfolded wire harness 200, the support frame 21 is moved along direction A by the second drive component 22, adjusting the vision camera 4 to the optimal shooting distance and angle so that the lens of the vision camera 4 is directly facing the end of the wire harness 200 to be inspected, ensuring that the inspection ends of all wire harnesses are within the effective field of view of the vision camera 4; turning on the light source 23 set above the multi-parallel wire harness twisting mechanism 3 to provide uniform and sufficient illumination for the inspection ends of the wire harness 200, eliminating shadows and reflection interference; then starting the vision camera 4 to take images of all the inspection ends of the wire harness 200 at once. Since the inspection ends of each wire harness are fully unfolded and do not obstruct each other, the vision camera 4 can take images of all the inspection ends of the wire harnesses simultaneously, without the need for multiple adjustments or repeated shooting, thus improving the efficiency of the inspection.

[0041] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A multi-strand parallel wire harness twisting mechanism, characterized in that: It includes a first driving member and a first twisting member and a second twisting member that are driven by the first driving member to move away from or move closer to each other. The first twisting member is provided with a plurality of first locking slots, and the second twisting member is provided with a plurality of second locking slots. The first locking slots and the second locking slots correspond to each other and their opening directions are opposite. The center lines of the bottom of several first locking slots are arranged in a radial, stepped manner, with a first dividing line that extends horizontally in the middle as the boundary. The center lines of the bottom of several first locking slots located to the left of the first dividing line expand upward and to the left step by step from the first dividing line. The horizontal expansion angle between each adjacent first locking slot on the left increases from the middle to the left step by step, and the vertical expansion angle between each adjacent first locking slot on the left increases from the middle to the left step by step. The center lines of the bottom of several first locking slots located to the right of the first dividing line expand downward and to the right step by step from the first dividing line. The horizontal expansion angle between each adjacent first locking slot on the right increases from the middle to the right step by step, and the vertical expansion angle between each adjacent first locking slot on the right increases from the middle to the right step by step. The arrangement pattern of the several second card slots is the same as that of the several first card slots.

2. The multi-wire harness twisting mechanism as described in claim 1, characterized in that: Each of the first locking slots has the same outline and is set in the shape of one side of the outer surface of the wire harness, and each of the second locking slots has the same outline and is set in the shape of the other side of the outer surface of the wire harness.

3. The multi-wire harness twisting mechanism as described in claim 1, characterized in that: One end of the first locking slot is a first insert end and the other end is a first protrusion end; the first locking slots located to the left of the first dividing line have the first insert end at one end of each first locking slot being lower than the first protrusion end at the other end. The first locking slots are located to the right of the first dividing line, and the first insert end of each first locking slot is higher than the first protruding end at the other end. One end of the second locking slot is a second insertion end and the other end is a second extension end; the second locking slots located to the left of the second dividing line have the second insertion end at one end of each second locking slot being lower than the second extension end at the other end; The second locking slots are located to the right of the second dividing line, with the second insert end at one end of each second locking slot being higher than the second protruding end at the other end.

4. The multi-wire harness twisting mechanism as described in claim 1, characterized in that: The first yarn twisting component includes a first movable plate connected to the first driving component and a first yarn twisting plate detachably connected to the first movable plate, and a plurality of first locking slots are disposed at the ends of the first yarn twisting plate; the second yarn twisting component includes a second movable plate connected to the first driving component and a second yarn twisting plate detachably connected to the second movable plate, and a second locking slot is disposed at the ends of the second yarn twisting plate.

5. A multi-wire harness scanning system, characterized in that: It includes a frame and a barcode scanner mounted on the frame, and a multi-wire harness twisting mechanism as described in any one of claims 1 to 4, wherein the barcode scanner is mounted on one side of the multi-wire harness twisting mechanism.

6. The multi-wire harness scanning system as described in claim 5, characterized in that: The barcode scanner and the multiple parallel wire harness twisting mechanism are both arranged along direction A. Direction A is inclined and forms a set angle with the vertical direction. The orientation of the first locking slot and the second locking slot is both along direction A.

7. The multi-wire harness scanning system as described in claim 6, characterized in that: The barcode scanner is mounted on a support frame, which is driven by a second driving component to move along direction A. A light source is mounted on the support frame and is located above the multiple parallel wire harness twisting mechanism.

8. A multi-wire harness detection system, characterized in that: It includes a frame and a vision camera mounted on the frame, and a multi-wire harness twisting mechanism as described in any one of claims 1 to 4, wherein the vision camera is mounted on one side of the multi-wire harness twisting mechanism.

9. A method for scanning multiple parallel wire harnesses, characterized in that: It is based on the multi-wire harness scanning system described in any one of claims 5 to 7, and includes the following steps: Step S1, wire harness alignment: Position multiple parallel wire harnesses along direction A, and move the positioned multiple parallel wire harnesses to the multiple parallel wire harness twisting mechanism. The inclination direction of the first locking groove and the second locking groove is consistent with the inclination direction of the wire harness. The end of each wire harness to be scanned corresponds exactly to one of the first locking grooves on the first twisting component and one of the second locking grooves on the second twisting component. Step S2: Closing and twisting the wires to unfold the wire bundle into a fan shape: Activate the first driving component, driving the first and second wire twisting components to approach each other along direction A. As the closing action occurs, the first and second locking slots respectively engage with the lower and upper outer surfaces of the wire bundle along its tilt direction, achieving tilted enclosure. The wire bundle on the left gradually shifts to the upper left, and the wire bundle on the right gradually shifts to the lower right. Finally, the ends of multiple parallel wire bundles to be scanned form a fan-shaped unfolded structure with the left side higher and the right side lower. Each wire bundle is staggered in both horizontal and vertical dimensions, and the ends to be scanned are fully exposed and do not obstruct each other. At the same time, the contours of the first and second locking slots are conformally adapted to the outer surface of the wire bundle, forming a wedge-shaped clamping force after closing, so that the wire bundle remains stable in the unfolded posture. Step S3: Adjust the position of the barcode scanner and perform scanning: Based on the fan-shaped posture of the wire harness after it is unfolded, move the barcode scanner to the optimal scanning distance and angle so that the lens of the barcode scanner is facing the barcode area on the end of the wire harness to be scanned, ensuring that all barcodes are within the effective field of view of the barcode scanner. Then start the barcode scanner to scan the barcode information on all wire harnesses at once.

10. A method for detecting multiple parallel wire harnesses, characterized in that: It is based on the multi-wire harness detection system of claim 8, and includes the following steps: Step S10, wire harness alignment: Position multiple parallel wire harnesses along direction A, and move the positioned multiple parallel wire harnesses to the multiple parallel wire harness twisting mechanism. The inclination direction of the first locking groove and the second locking groove is consistent with the inclination direction of the wire harness. The end of each wire harness to be tested corresponds exactly to one of the first locking grooves on the first twisting piece and one of the second locking grooves on the second twisting piece. Step S20: Closing and twisting the wires to unfold the wire harness into a fan shape: Activate the first driving component to drive the first and second wire twisting components to approach each other along direction A. As the closing action occurs, the first and second locking slots respectively engage with the lower and upper outer surfaces of the wire harness along the tilt direction, achieving tilted enclosure. The wire harness on the left gradually shifts to the upper left, and the wire harness on the right gradually shifts to the lower right. Finally, the ends of multiple parallel wire harnesses to be detected form a fan-shaped unfolding structure with the left side higher and the right side lower. Each wire harness is staggered in both horizontal and vertical dimensions, and the ends to be detected are fully exposed and do not obstruct each other. At the same time, the contours of the first and second locking slots are conformally adapted to the outer surface of the wire harness, forming a wedge-shaped clamping force after closing, so that the wire harness remains stable in the unfolded posture. Step S30: Adjust the position of the vision camera and perform image detection: Based on the fan-shaped posture of the wire harness after it is unfolded, move the vision camera to the optimal shooting distance and angle so that the lens of the vision camera is facing the end of the wire harness to be detected, ensuring that the detection ends of all wire harnesses are within the effective field of view of the vision camera. Then, start the vision camera and take images to detect the ends of all wire harnesses to be detected at once.

Images