Positioning tool for welding processing of new energy automobile integrated wiring harness

Abstract

The present application relates to the technical field of welding positioning, in particular to a positioning tool for welding processing of integrated wiring harness of new energy vehicles, comprising a support, a welding unit, a positioning unit, a positioning mechanism arranged on the support for initial positioning of the integrated wiring harness, a wire guide mechanism one arranged on the support for positioning of the copper wire to be welded, and a fixing unit; through step-by-step positioning and clamping of the integrated wiring harness, copper wire scattering, forking and deviation are effectively avoided, welding position accuracy and welding surface adhesion can be effectively improved, problems such as virtual welding, missed welding and welding deviation are reduced, the process of manual copper wire arrangement is effectively reduced, welding processing efficiency and product consistency are further improved, the conductivity and service life of the wiring harness are ensured, the product failure rate and the risk of later use are reduced, and the large-scale and high-standard production demand of the high-voltage and high-current integrated wiring harness of new energy vehicles can be better adapted.

Description

Technical Field

[0001] This invention relates to the field of welding positioning technology, and specifically to a positioning fixture for welding integrated wiring harnesses in new energy vehicles. Background Technology

[0002] In the electrical system of new energy vehicles, the integrated wiring harness plays a core role in power transmission and signal communication. Its connection reliability directly affects the vehicle's operational safety. To achieve stable conductive connections between the integrated wiring harness and terminals, and between wiring harnesses, copper wire end welding is an essential processing step. It is necessary to remove the outer insulation sheath of the cable to expose multiple conductive copper wires before welding and fixing them to ensure stable current conduction. When welding the integrated wiring harness, tooling is usually used to clamp and position the cable body, and then the exposed copper wire ends are directly flattened and welded using a pressure welding device. The overall process is mainly based on rapid positioning and one-time pressure welding. However, in actual processing, a certain length of cable insulation sheath needs to be stripped before welding. In the electrical system of new energy vehicles, the integrated wiring harness is the core component for power transmission and signal interaction. To meet the requirements of high current transmission, multi-circuit integration, and high-voltage safety of the whole vehicle, it usually contains multiple strands of large-diameter conductive copper wires. In order to ensure the welding lap strength and conductive cross-sectional area, a long section of the outer insulation sheath of the cable needs to be stripped during processing to expose more lengths and numbers of copper wires for welding. Therefore, when there are many exposed copper wires and they are long, the copper wires are prone to loosening, scattering, and splitting after losing the constraint of the sheath. In particular, the copper wire ends are difficult to naturally gather and fit together, which may directly lead to insufficient contact of copper wires and uneven welding surface during welding. At the same time, the loose copper wires cannot be accurately aligned with the welding position, which can easily lead to phenomena such as cold welding, missing welding, and welding deviation, affecting the welding strength and conductivity stability of the integrated wiring harness. In view of this, we propose a positioning fixture for welding processing of integrated wiring harnesses in new energy vehicles. Summary of the Invention

[0003] To address the aforementioned shortcomings of existing technologies, this invention provides a positioning fixture for welding integrated wiring harnesses in new energy vehicles. This fixture effectively solves the problems in existing welding processes where multiple strands of long copper wires need to be exposed to meet high current transmission requirements, leading to loosening and branching of the copper wires, uneven welding adhesion, and consequently, incomplete welds, missed welds, and weld misalignments. This makes it difficult to guarantee welding strength and conductivity stability.

[0004] To achieve the above objectives, the present invention provides the following technical solution: This invention provides a positioning fixture for welding integrated wiring harnesses in new energy vehicles, including a bracket, a welding unit, a lifting assembly mounted on the bracket, and a welding assembly mounted on the lifting assembly that moves up and down with the lifting assembly. The positioning unit includes a positioning mechanism mounted on a bracket for initial positioning of the integrated wire harness, a conductor mechanism mounted on a bracket for positioning the copper wire to be welded, a guide mechanism mounted on a bracket for guiding the conductor mechanism to gather the copper wire to be welded when the copper wire to be welded is positioned, and a positioning platform mounted on a bracket for abutting and positioning the welding part of the copper wire to be welded. The fixing unit includes a fixing mechanism mounted on a bracket for clamping, positioning, and fixing the integrated wire harness; a conductor mechanism two mounted on the fixing mechanism for positioning the copper wire to be welded; the conductor mechanism two also drives the conductor mechanism one to move synchronously towards the welding area of ​​the copper wire to be welded; and a guide mechanism two mounted on the fixing mechanism for guiding the conductor mechanism two to gather the copper wire to be welded while it is moving towards the welding area of ​​the copper wire to be welded. The conductor mechanism one and the conductor mechanism two are used to gather, tighten, and fix the copper wire to be welded.

[0005] Furthermore, the positioning mechanism includes a positioning plate fixedly connected to the inner wall of the bracket, a V-shaped positioning block for initial positioning of the integrated wire harness fixedly connected to the top of the positioning plate, and a limiting groove for limiting and guiding the fixing mechanism on the inner wall of the positioning plate.

[0006] Furthermore, the wire mechanism includes a wire frame disposed inside the bracket for gathering the copper wires to be welded, and an anti-wear pad is fixedly connected to the inner wall of the wire frame.

[0007] Furthermore, the guiding mechanism includes a guide rail fixedly connected to the inner wall of the bracket, a slider slidably connected to the inner wall of the guide rail, an elastic telescopic rod fixedly connected to the bottom of the slider, and the other end of the elastic telescopic rod fixedly connected to the inner wall of the guide rail.

[0008] Furthermore, a sliding rod is fixedly connected to one side of the slider, and the surface of the sliding rod is slidably connected to the inner wall of the wire frame. A lower trapezoidal block is fixedly connected to the bottom of the wire frame, and a lower trapezoidal block is provided on one side of the lower trapezoidal block for pressing and engaging with the lower trapezoidal block. The bottom of the lower trapezoidal block is fixedly connected to the inner wall of the bracket.

[0009] Furthermore, the fixing mechanism includes an electric cylinder 1 fixedly connected to the top of the bracket, a fixing frame fixedly connected to the output end of the electric cylinder 1, and a limiting groove 2 for limiting and guiding the wire mechanism 1 on the inner wall of the fixing frame.

[0010] Furthermore, a V-shaped fixing block is fixedly connected to the bottom of the fixing frame. The V-shaped fixing block is used to cooperate with the V-shaped positioning block to clamp and fix the integrated wire harness.

[0011] Furthermore, the second wire guide mechanism includes an electric cylinder two fixedly connected to the inner wall of the fixed frame, a wire guide frame two fixedly connected to the output end of the electric cylinder two, the inner wall of the wire guide frame two slidably connected to the surface of the first wire guide frame, and an anti-wear pad two fixedly connected to the inner wall of the second wire guide frame.

[0012] Furthermore, the second guiding mechanism includes a second guide rail fixedly connected to the inner wall of the fixed frame, a second slider slidably connected to the inner wall of the second guide rail, a second elastic telescopic rod fixedly connected to the top of the second slider, and the other end of the second elastic telescopic rod fixedly connected to the inner wall of the second guide rail.

[0013] Furthermore, a slide rod is fixedly connected to one side of the slider two, and the surface of the slide rod two is slidably connected to the inner wall of the wire frame two. An upper trapezoidal block one is fixedly connected to the top of the wire frame two, and an upper trapezoidal block two is provided on one side of the upper trapezoidal block one for pressing and engaging with the upper trapezoidal block one. The top of the upper trapezoidal block two is fixedly connected to the inner wall of the bracket.

[0014] The technical solution provided by this invention has the following advantages compared with known public technologies: This invention employs step-by-step positioning and clamping of the integrated wire harness, along with synchronous guidance, automatic gathering, and tightening of the copper wires to be welded. Before welding, loose multi-strand copper wires are neatly aligned, effectively preventing wire scattering, branching, and misalignment. This significantly improves welding position accuracy and surface fit, reducing issues such as incomplete welds, missed welds, and weld misalignment. Consequently, it enhances the welding strength and conductivity stability of the integrated wire harness. Furthermore, the integrated positioning and gathering structure effectively reduces manual handling of the copper wires, shortens processing time, further improves welding efficiency and product consistency, ensures the wire harness's conductivity and lifespan, and lowers product defect rates and post-use risks. It also better meets the large-scale, high-standard production requirements of high-voltage, high-current integrated wire harnesses for new energy vehicles. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the welding unit, positioning unit, and fixing unit of the present invention; Figure 3 This is a schematic diagram of the disassembled positioning unit and fixing unit of the present invention; Figure 4 This is a schematic diagram of the positioning unit structure of the present invention; Figure 5 This is a schematic diagram of the fixed unit structure of the present invention; Figure 6 For the present invention Figure 4 Enlarged schematic diagram of the structure at point A; Figure 7 For the present invention Figure 5 Enlarged schematic diagram of the structure at point B.

[0017] The labels in the diagram represent: 100, bracket; 200, welding unit; 201, welding assembly; 202, lifting assembly; 300. Positioning unit; 301. Positioning mechanism; 3011. Positioning plate; 3012. V-shaped positioning block; 3013. Limiting groove one; 302. Wire guide mechanism one; 3021. Wire guide frame one; 3022. Anti-wear pad one; 303. Guide mechanism one; 3031. Lower trapezoidal block one; 3032. Lower trapezoidal block two; 3033. Slide rod one; 3034. Guide rail one; 3035. Slider one; 3036. Elastic telescopic rod one; 304. Positioning platform; 400. Fixed unit; 401. Fixed mechanism; 4011. Electric cylinder one; 4012. Fixed frame; 4013. Limiting groove two; 4014. V-shaped fixing block; 402. Wire guide mechanism two; 4021. Electric cylinder two; 4022. Wire guide frame two; 4023. Anti-wear pad two; 403. Guide mechanism two; 4031. Upper trapezoidal block one; 4032. Upper trapezoidal block two; 4033. Slide rod two; 4034. Guide rail two; 4035. Slider two; 4036. Elastic telescopic rod two. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] The present invention will be further described below with reference to embodiments.

[0020] like Figures 1 to 7As shown, a positioning fixture for welding integrated wire harnesses in new energy vehicles includes a bracket 100, a welding unit 200, a lifting assembly 202 mounted on the bracket 100, and a welding assembly 201 mounted on the lifting assembly 202 and moving up and down with it. It also includes a positioning unit 300, comprising a positioning mechanism 301 mounted on the bracket 100 for initial positioning of the integrated wire harness, a wire guide mechanism 302 mounted on the bracket 100 for positioning the copper wires to be welded, and a wire guide mechanism 302 mounted on the bracket 100 for positioning the copper wires to be welded. The structure 302 includes a conductor mechanism 302 that drives the conductor to be welded in the positioning state of the copper wire to be positioned, a guide mechanism 303 that guides the copper wire to be welded to be gathered, and a positioning platform 304 mounted on the bracket 100 for abutting and positioning the welding part of the copper wire to be welded. The fixing unit 400 includes a fixing mechanism 401 mounted on the bracket 100 for clamping, positioning and fixing the integrated wire harness, and a conductor mechanism 402 mounted on the fixing mechanism 401 for positioning the copper wire to be welded. The conductor mechanism 402 is also used to drive the conductor mechanism 302 to simultaneously weld the copper wire to be welded. The connection point moves in the direction of movement, and a guide mechanism 403, mounted on the fixed mechanism 401, is used to guide the wire guide mechanism 402 to gather the copper wire to be welded when it moves towards the welding area of ​​the copper wire to be welded. The wire guide mechanism 302 and the wire guide mechanism 402 are used to gather, tighten, and fix the copper wire to be welded. The lifting assembly 202 is fixed to the bracket 100 by bolts. The welding assembly 201 is installed at the output end of the lifting assembly 202 and can move linearly up and down with the lifting assembly 202, allowing the welding head to move closer to or away from the welding area. During operation... First, the positioning mechanism 301 initially positions the integrated wire harness, the first wire conductor mechanism 302 positions the copper wire to be welded, the first guide mechanism 303 drives the first wire conductor mechanism 302 to gather the copper wire, the fixing mechanism 401 clamps and fixes the integrated wire harness, the second wire conductor mechanism 402 simultaneously drives the first wire conductor mechanism 302 to move towards the welding position, the second guide mechanism 403 cooperates to complete the gathering of the copper wire, finally the first wire conductor mechanism 302 and the second wire conductor mechanism 402 tighten and fix the copper wire to be welded, the positioning table 304 abuts and positions the welding position, and the lifting component 202 drives the welding component 201 to descend to complete the welding; Specifically, refer to Figures 2 to 4The positioning mechanism 301 includes a positioning plate 3011 fixedly connected to the inner wall of the bracket 100. A V-shaped positioning block 3012 for initial positioning of the integrated wire harness is fixedly connected to the top of the positioning plate 3011. A limiting groove 3013 for limiting and guiding the fixing mechanism 401 is opened on the inner wall of the positioning plate 3011. The positioning plate 3011 is made of aluminum alloy and is fixedly connected to the inner wall of the bracket 100 by screws. The surface is anodized for wear resistance and rust prevention. The V-shaped positioning block 3012 is made of nylon and is fixed to the top of the positioning plate 3011 by bolts. The V-shaped opening faces upward and is used for quick initial positioning of the integrated wire harness to avoid wire harness deviation. At the same time, the nylon material can prevent scratching the wire harness skin. The limiting groove 3013 is opened on the inner wall of the positioning plate 3011 and is a straight through groove for limiting and guiding the fixing mechanism 401 to ensure that the fixing mechanism 401 does not wobble left or right when moving up and down. Specifically, refer to Figure 3 and Figure 4 The conductor mechanism 302 includes a conductor frame 3021 disposed inside the support 100 for gathering the copper wires to be welded. An anti-wear pad 3022 is fixedly connected to the inner wall of the conductor frame 3021. The conductor frame 3021 is made of stainless steel and is a frame structure disposed inside the support 100. It is used to gather and organize the copper wires to be welded to prevent the copper wires from being scattered. The anti-wear pad 3022 is made of rubber and is fixed to the inner wall of the conductor frame 3021 by adhesive. It is in direct contact with the copper wires to prevent the copper wires from being scratched or worn during gathering and movement, and to ensure the conductivity and structural integrity of the copper wires. Specifically, refer to Figure 4 and Figure 6The guiding mechanism 303 includes a guide rail 3034 fixedly connected to the inner wall of the bracket 100, a slider 3035 slidably connected to the inner wall of the guide rail 3034, an elastic telescopic rod 3036 fixedly connected to the bottom of the slider 3035, the other end of the elastic telescopic rod 3036 fixedly connected to the inner wall of the guide rail 3034, a sliding rod 3033 fixedly connected to one side of the slider 3035, the surface of the sliding rod 3033 slidably connected to the inner wall of the wire guide frame 3021, a lower trapezoidal block 3031 fixedly connected to the bottom of the wire guide frame 3021, and a lower trapezoidal block 2 correspondingly provided on one side of the lower trapezoidal block 3031 for pressing and engaging with the lower trapezoidal block 3031. 3032, the bottom of the lower trapezoidal block 3032 is fixedly connected to the inner wall of the bracket 100; the guide rail 3034 is made of bearing steel and is fixedly connected to the inner wall of the bracket 100 by bolts; the slider 3035 is slidably connected to the inner wall of the guide rail 3034 and can slide linearly along the guide rail 3034; the two ends of the elastic telescopic rod 3036 are fixedly connected to the bottom of the slider 3035 and the inner wall of the guide rail 3034 respectively, and the spring-type telescopic rod provides the restoring elastic force for the slider 3035; one end of the sliding rod 3033 is fixedly connected to the slider 3035, and the surface is slidably connected to the inner wall of the wire frame 3021 to support the wire frame 3021 and achieve relative sliding; It should be noted that the lower trapezoidal block 3031 is made of hard alloy and is fixed to the bottom of the conductor frame 3021. The lower trapezoidal block 3032 is also made of hard alloy and is fixed to the inner wall of the bracket 100. It corresponds to the lower trapezoidal block 3031 and is inclined. When the conductor frame 3021 moves towards the welding position, the lower trapezoidal block 3031 and the lower trapezoidal block 3032 are pressed together, which causes the conductor frame 3021 to retract inward and complete the gathering of the copper wire to be welded. Conversely, when resetting after welding, the elastic telescopic rod 3036 can drive the slider 3035 to reset, and the conductor frame 3021 opens synchronously. Specifically, refer to Figure 2 , Figure 3 and Figure 5The fixing mechanism 401 includes an electric cylinder 4011 fixedly connected to the top of the bracket 100. A fixing frame 4012 is fixedly connected to the output end of the electric cylinder 4011. A limiting groove 4013 is provided on the inner wall of the fixing frame 4012 for limiting and guiding the wire guide mechanism 302. A V-shaped fixing block 4014 is fixedly connected to the bottom of the fixing frame 4012. The V-shaped fixing block 4014 cooperates with the V-shaped positioning block 3012 to clamp and fix the integrated wire harness. The electric cylinder 4011 is fixed to the top of the bracket 100 by bolts. It is a servo electric cylinder with stable output power and precise control of the extension and retraction stroke. The fixing frame 4012 adopts... Made of cast iron, it is fixedly connected to the output end of the electric cylinder 4011 and moves up and down with the electric cylinder 4011. The limiting groove 4013 is opened on the inner wall of the fixed frame 4012 to limit and guide the wire mechanism 302, ensuring the accurate movement path of the wire mechanism 302. The V-shaped fixing block 4014 is made of polyurethane and is fixed at the bottom of the fixed frame 4012, corresponding to the V-shaped positioning block 3012. When the electric cylinder 4011 drives the fixed frame 4012 down, the V-shaped fixing block 4014 and the V-shaped positioning block 3012 close, firmly clamping and positioning the integrated wire harness to prevent the wire harness from shaking during welding. Specifically, refer to Figure 5 The second wire guide mechanism 402 includes an electric cylinder 4021 fixedly connected to the inner wall of the fixed frame 4012, a wire guide frame 4022 fixedly connected to the output end of the electric cylinder 4021, a sliding connection between the inner wall of the wire guide frame 4022 and the surface of the first wire guide frame 3021, and a wear-resistant pad 4023 fixedly connected to the inner wall of the second wire guide frame 4022. The electric cylinder 4021 is fixed to the inner wall of the fixed frame 4012 by bolts and is a miniature stepping electric cylinder used to provide linear driving force. The second wire guide frame 4022 is made of stainless steel and is fixedly connected to the output end of the electric cylinder 4021. Its inner wall is slidably fitted onto the surface of the first wire guide frame 3021, which can drive the first wire guide frame 3021 to move synchronously towards the welding position of the copper wire to be welded. The wear-resistant pad 4023 is made of silicone and is adhered to the inner wall of the second wire guide frame 4022, contacting the first wire guide frame 3021 and the copper wire to be welded, reducing friction damage and improving the smoothness during convergence. Specifically, refer to Figure 5 and Figure 7The guide mechanism 403 includes a guide rail 4034 fixedly connected to the inner wall of the fixed frame 4012, a slider 4035 slidably connected to the inner wall of the guide rail 4034, an elastic telescopic rod 4036 fixedly connected to the top of the slider 4035, the other end of the elastic telescopic rod 4036 fixedly connected to the inner wall of the guide rail 4034, a sliding rod 4033 fixedly connected to one side of the slider 4035, the surface of the sliding rod 4033 slidably connected to the inner wall of the guide frame 4022, an upper trapezoidal block 4031 fixedly connected to the top of the guide frame 4022, an upper trapezoidal block 4032 for pressing against the upper trapezoidal block 4031 on one side of the upper trapezoidal block 4031, and the top of the upper trapezoidal block 4032 fixedly connected to the inner wall of the bracket 100; the guide rail 4034 is made of bearing steel and fixed to the inner wall of the fixed frame 4012, and the slider 4035... The sliding connection is located inside the guide rail 2 4034. The two ends of the elastic telescopic rod 2 4036 are respectively connected to the top of the slider 2 4035 and the inner wall of the guide rail 2 4034, providing a reset elastic force. One end of the slider 2 4033 is fixed to the slider 2 4035, and its surface is slidably connected to the inner wall of the wire frame 2 4022. The upper trapezoidal block 1 4031 is fixed to the top of the wire frame 2 4022, and the upper trapezoidal block 2 4032 is fixed to the inner wall of the bracket 100. The two are inclined to cooperate. When the wire frame 2 4022 moves towards the welding position, the upper trapezoidal block 1 4031 and the upper trapezoidal block 2 4032 are squeezed, which drives the wire frame 2 4022 to retract inward. With the help of the wire frame 1 3021, the copper wire to be welded is gathered and tightened. After the welding is completed, the wire mechanism 2 402 and the wire mechanism 1 302 are reset. The elastic telescopic rod 2 4036 drives the slider 2 4035 to reset, the wire frame 2 4022 opens, and the copper wire is released.

[0021] The working principle of this invention is as follows: First, the operator can place the integrated wire harness on the V-shaped positioning block 3012 of the positioning mechanism 301. The V-shaped structure enables the integrated wire harness to achieve adaptive centering and initial positioning, avoiding left and right displacement of the wire harness during processing. At the same time, the copper wire to be welded is inserted into the wire frame 3021 of the wire mechanism 302. The wire frame 3021 performs preliminary sorting and positioning of multiple copper wires. The welding end of the copper wire is naturally placed on the positioning table 304. The positioning table 304 provides abutment support to the welding part of the copper wire to be welded, ensuring that the welding position of all copper wires is at a uniform height. Then, the electric cylinder 4011 at the top of the bracket 100 is activated. The electric cylinder 4011 drives the fixing frame 4012 to move vertically downward along the limiting groove 3013 on the inner wall of the positioning plate 3011. The V-shaped fixing block 4014 at the bottom of the fixing frame 4012 moves downward and cooperates with the V-shaped positioning block 3012 to clamp and lock the integrated wire harness from top to bottom, completely eliminating the problem of wire harness shaking and displacement during the welding process. At the same time, the limiting groove 4013 on the inner wall of the fixing frame 4012 and the conductor frame 3021 form a limiting and guiding cooperation to ensure that the subsequent copper wire gathering and movement path is accurate and without deviation. Then, the electric cylinder 4021 inside the fixing frame 4012 is activated. The electric cylinder 4021 drives the wire frame 4022 to move towards the welding part of the copper wire to be welded. Since the inner wall of the wire frame 4022 is slidably connected to the surface of the wire frame 3021, the wire frame 4022 will drive the wire frame 3021 to move synchronously towards the welding part. During the movement, the lower trapezoidal block 3031 at the bottom of conductor frame 3021 and the inclined surface of the lower trapezoidal block 3032 on the inner wall of support 100 press against each other, forcing conductor frame 3021 to retract inward along slide bar 3033. At the same time, the upper trapezoidal block 4031 at the top of conductor frame 4022 and the inclined surface of the upper trapezoidal block 4032 on the inner wall of support 100 press against each other, forcing conductor frame 4022 to retract inward along slide bar 4033. Under the combined action of the two sets of trapezoidal blocks, conductor frame 3021 and conductor frame 4022 move up and down and tighten inward respectively. During the axial movement, the scattered copper wires to be welded can be gradually gathered and tightly attached. The anti-wear pad 3022 on the inner wall of conductor frame 3021 and the anti-wear pad 4023 on the inner wall of conductor frame 4022 protect the surface of the copper wire throughout the process, preventing the copper wire from being scratched and worn during the gathering and tightening process. After the copper wires are gathered and tightened, the lifting component 202 on the bracket 100 is activated, driving the welding component 201 to move downwards, so that the welding end of the welding component 201 is precisely close to the copper wire welding part on the positioning table 304, and the copper wires that have been gathered and tightened are welded. During the welding process, the wire mechanism 1 302 and the wire mechanism 2 402 remain in a tightened state, and the positioning unit 300 and the fixing unit 400 always maintain the positioning and fixing state of the wire harness and the copper wire, ensuring that the welding position does not shift and the welding quality is stable and reliable. After welding is completed, the lifting assembly 202 drives the welding assembly 201 to reset upwards. The electric cylinder 4021 drives the wire frame 4022 to move in the opposite direction. During the reverse reset movement, the corresponding trapezoidal blocks disengage. The wire frame 3021 and the wire frame 4022 can open outwards under the reset force of the elastic telescopic rod 3036 and the elastic telescopic rod 4036, releasing the copper wire to be welded. Then, the electric cylinder 4011 drives the fixing frame 4012 to reset upwards, and the V-shaped fixing block 4014 separates from the V-shaped positioning block 3012, releasing the integrated wire harness. The operator can then remove the welded integrated wire harness, completing a complete welding process.

[0022] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A positioning fixture for welding integrated wiring harnesses in new energy vehicles, comprising a bracket (100), a welding unit (200), a lifting assembly (202) mounted on the bracket (100), and a welding assembly (201) mounted on the lifting assembly (202) and moving up and down with the lifting assembly (202), characterized in that, include, The positioning unit (300) includes a positioning mechanism (301) disposed on the bracket (100) for initial positioning of the integrated wire harness, a conductor mechanism (302) disposed on the bracket (100) for positioning the copper wire to be welded, a guide mechanism (303) disposed on the bracket (100) for driving the conductor mechanism (302) to gather the copper wire to be welded when the conductor mechanism (302) is in the positioning state of the copper wire to be welded, and a positioning platform (304) disposed on the bracket (100) for abutting and positioning the welding part of the copper wire to be welded. The fixing unit (400) includes a fixing mechanism (401) mounted on the bracket (100) for clamping, positioning and fixing the integrated wire harness, a conductor mechanism two (402) mounted on the fixing mechanism (401) for positioning the copper wire to be welded, and the conductor mechanism two (402) is also used to drive the conductor mechanism one (302) to move synchronously towards the welding part of the copper wire to be welded, and a guide mechanism two (403) mounted on the fixing mechanism (401) for driving the conductor mechanism two (402) to gather the copper wire to be welded while it is moving towards the welding part of the copper wire to be welded. The conductor mechanism one (302) and the conductor mechanism two (402) are used to gather, tighten and fix the copper wire to be welded.

2. The positioning fixture for welding integrated wire harnesses in new energy vehicles according to claim 1, characterized in that, The positioning mechanism (301) includes a positioning plate (3011) fixedly connected to the inner wall of the bracket (100), a V-shaped positioning block (3012) for initial positioning of the integrated wire harness fixedly connected to the top of the positioning plate (3011), and a limiting groove (3013) for limiting and guiding the fixing mechanism (401) on the inner wall of the positioning plate (3011).

3. The positioning fixture for welding integrated wire harnesses in new energy vehicles according to claim 1, characterized in that, The conductor mechanism (302) includes a conductor frame (3021) disposed inside the bracket (100) for gathering the copper wires to be welded, and an anti-wear pad (3022) is fixedly connected to the inner wall of the conductor frame (3021).

4. The positioning fixture for welding integrated wire harnesses in new energy vehicles according to claim 1, characterized in that, The guide mechanism (303) includes a guide rail (3034) fixedly connected to the inner wall of the bracket (100), a slider (3035) slidably connected to the inner wall of the guide rail (3034), an elastic telescopic rod (3036) fixedly connected to the bottom of the slider (3035), and the other end of the elastic telescopic rod (3036) fixedly connected to the inner wall of the guide rail (3034).

5. A positioning fixture for welding integrated wire harnesses in new energy vehicles according to claim 4, characterized in that, The slider 1 (3035) is fixedly connected to a slide rod 1 (3033) on one side. The surface of the slide rod 1 (3033) is slidably connected to the inner wall of the wire frame 1 (3021). The bottom of the wire frame 1 (3021) is fixedly connected to a lower trapezoidal block 1 (3031). A lower trapezoidal block 2 (3032) is provided on one side of the lower trapezoidal block 1 (3031) for pressing and engaging with the lower trapezoidal block 1 (3031). The bottom of the lower trapezoidal block 2 (3032) is fixedly connected to the inner wall of the bracket (100).

6. A positioning fixture for welding integrated wire harnesses in new energy vehicles according to claim 1, characterized in that, The fixing mechanism (401) includes an electric cylinder (4011) fixedly connected to the top of the bracket (100), a fixing frame (4012) fixedly connected to the output end of the electric cylinder (4011), and a limiting groove (4013) for limiting and guiding the wire mechanism (302) on the inner wall of the fixing frame (4012).

7. A positioning fixture for welding integrated wire harnesses in new energy vehicles according to claim 6, characterized in that, The bottom of the fixing frame (4012) is fixedly connected to a V-shaped fixing block (4014), which is used to cooperate with the V-shaped positioning block (3012) to clamp and fix the integrated wire harness.

8. A positioning fixture for welding integrated wire harnesses in new energy vehicles according to claim 1, characterized in that, The second wire guide mechanism (402) includes an electric cylinder (4021) fixedly connected to the inner wall of a fixed frame (4012), a wire guide frame (4022) fixedly connected to the output end of the electric cylinder (4021), the inner wall of the wire guide frame (4022) being slidably connected to the surface of the first wire guide frame (3021), and an anti-wear pad (4023) fixedly connected to the inner wall of the second wire guide frame (4022).

9. A positioning fixture for welding integrated wire harnesses in new energy vehicles according to claim 1, characterized in that, The second guide mechanism (403) includes a second guide rail (4034) fixedly connected to the inner wall of the fixed frame (4012), a second slider (4035) slidably connected to the inner wall of the second guide rail (4034), a second elastic telescopic rod (4036) fixedly connected to the top of the second slider (4035), and the other end of the second elastic telescopic rod (4036) fixedly connected to the inner wall of the second guide rail (4034).

10. A positioning fixture for welding integrated wire harnesses in new energy vehicles according to claim 9, characterized in that, The slider two (4035) is fixedly connected to one side of the slider two (4033), the surface of the slider two (4033) is slidably connected to the inner wall of the wire frame two (4022), the top of the wire frame two (4022) is fixedly connected to the upper trapezoidal block one (4031), the upper trapezoidal block one (4032) is provided on one side of the upper trapezoidal block one (4031) for pressing and cooperating with the upper trapezoidal block one (4031), and the top of the upper trapezoidal block two (4032) is fixedly connected to the inner wall of the bracket (100).

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