USB harness automatic welding equipment

Abstract

The application belongs to the technical field of wire harness processing, and provides a USB wire harness automatic welding equipment, which comprises a rack, a double-layer circulating tool conveying line is arranged on the rack, a plurality of circulating tools are arranged on the double-layer circulating tool conveying line, a wire sequence detection device, a core wire straightening device, a zero cutting cap stripping device, a core wire tin dipping device, a wire harness welding device and a wire harness unloading device are sequentially arranged on the rack along the conveying direction of the upper layer of the double-layer circulating tool conveying line; the devices are linked and cooperated to realize the whole-process integrated assembly line operation of core wire sequence detection, core wire straightening correction, core wire fixed-length zero cutting, insulating wire cap stripping, core wire conductor flux infiltration, core wire conductor tin dipping, automatic welding assembly, wire harness unloading, tool circulating reflow reuse, so as to realize the automatic welding assembly of the USB wire harness assembly, the product assembly efficiency and the qualified rate are greatly improved, and the automatic production demand of the USB wire harness assembly with high precision, high yield, large scale, continuity and digitization can be effectively met.

Description

Technical Field

[0001] This invention relates to the field of wire harness processing technology, and in particular to an automatic welding device for USB wire harnesses. Background Technology

[0002] USB wiring harnesses are core electrical connection components widely used in industrial automation, machine vision, smart warehousing, security monitoring, and smart terminal equipment. They are primarily used for power transmission and high-speed differential signal interaction between devices. Based on different transmission protocols such as USB 2.0, USB 3.2, and Type-C, USB wiring harnesses are equipped with corresponding specifications for power cables, differential signal cables, shielding layers, and outer protective sheaths to meet the power supply and data transmission rate requirements of different scenarios.

[0003] Conventional USB cable harness assemblies mainly consist of cables and connectors. The cables integrate multiple functional cores. During assembly, the insulation layer at the ends of each core must first be peeled off. Flux and solder are then applied sequentially to the exposed conductor surfaces. Finally, each exposed conductor of the cable core is precisely aligned and soldered to the corresponding pads on the connector, achieving the welding assembly. However, currently, most of these assembly processes for USB cable harnesses are done manually. This is not only labor-intensive and inefficient, but also relies entirely on the operator's experience, making it difficult to guarantee processing quality. This results in poor assembly consistency and a low product yield, making it difficult to meet the demands of high-precision, high-yield, large-scale automated production of USB cable harnesses. Summary of the Invention

[0004] In order to overcome the shortcomings of the prior art as mentioned above, in-depth research was conducted, and after a great deal of creative work, the present invention was completed.

[0005] Specifically, the technical problem to be solved by this invention is to provide an automatic welding device for USB wire harnesses, so as to solve the technical problems of the current manual assembly of USB wire harness assemblies, which is labor-intensive, inefficient, difficult to guarantee processing quality, poor assembly consistency, low product qualification rate, and difficult to meet the needs of large-scale automatic production of USB wire harnesses with high precision and high yield.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is as follows: An automatic USB wire harness soldering device includes a frame with a double-layer circulating tooling conveyor line. The double-layer circulating tooling conveyor line is equipped with several transfer fixtures for positioning and clamping wires. Along the upper conveying direction of the double-layer circulating tooling conveyor line, the frame is sequentially equipped with a wire sequence detection device, a core wire straightening device, a zero-cutting and cap-stripping device, a core wire soldering device, a wire harness soldering device, and a wire harness unloading device. The double-layer circulating tooling conveyor line includes an upper tooling conveyor line, a lower tooling conveyor line, and a tooling transfer device. The lower tooling conveyor line is located below the upper tooling conveyor line, and the tooling transfer device is located at the unloading end of the frame, used to transfer the unloading tooling from the upper tooling conveyor line to the lower tooling conveyor line. The line sequence detection device includes a tooling stop mechanism and a line sequence detection mechanism, wherein the tooling stop mechanism is located below the line sequence detection mechanism; The core wire straightening device includes a wire-pulling knife driven by a wire-pulling drive mechanism for straightening each core wire of the wire. The zero-cut and cap-stripping device includes a wire stripping knife driven by a wire stripping drive mechanism, used to first cut each core wire of the wire to a fixed length and then strip the cap. The core wire tinning device includes a tooling flipping mechanism, a flux container, a solder pot, and a tin scraping mechanism. The flux container and the solder pot are both located on one side of the tooling flipping mechanism, and the flux container and the solder pot are arranged sequentially and spaced apart along the conveying direction of the transfer tooling. The tin scraping mechanism is arranged correspondingly to the solder pot. The wire harness welding device includes a connector feeding mechanism, a feeding and dispensing mechanism, and a solder melting and welding mechanism. The connector feeding mechanism is located upstream of the feeding and dispensing mechanism, and the solder melting and welding mechanism is located above the wire harness welding position. The wire harness unloading device is located above the tooling transfer device, and a finished product storage box is fixedly installed at the unloading end of the frame. A tooling transfer clearance opening is also provided between the unloading end of the frame and the wire harness unloading device and the tooling transfer device.

[0007] As an improved technical solution, the upper tooling conveyor line includes a tooling feeding conveyor mechanism, a tooling guiding sliding mechanism, and a tooling shifting mechanism. The tooling guiding sliding mechanism and the tooling shifting mechanism are located downstream of the tooling feeding conveyor mechanism, and one end of the tooling guiding sliding mechanism is connected to the unloading end of the tooling feeding conveyor mechanism. The wire sequence detection device, the core wire straightening device, the zero-cutting and cap-stripping device, the core wire tinning device, the wire harness welding device, and the wire harness unloading device are all located on one side of the tooling guiding sliding mechanism and are arranged sequentially along the conveying direction of the circulating tooling. The tooling guiding sliding mechanism is provided with a plurality of circulating toolings, and the tooling shifting mechanism is used to perform unidirectional stepping shifting of each of the circulating toolings on the tooling guiding sliding mechanism. The lower tooling conveyor line includes a tooling return conveyor mechanism, and the tooling transfer device is located at the loading end of the tooling return conveyor mechanism, and the tooling transfer device is correspondingly set with the tooling transfer avoidance port.

[0008] As an improved technical solution, the transfer tooling includes a transfer base, a wire guide plate is fixedly installed at one end of the transfer base, a wire clamping assembly is provided at the other end of the transfer base, and a wire support part is provided between the wire clamping assembly and the wire guide plate; The wire clamping assembly includes a fixed wire clamping block, a floating wire clamping block, and a first compression spring. The fixed wire clamping block is fixedly installed on the transfer base, and a first wire clamping groove adapted to the outer diameter of the wire body is opened on one side of the top of the fixed wire clamping block. The floating wire clamping block is hingedly installed on the transfer base, and a second wire clamping groove adapted to the outer diameter of the wire body is opened on the side of the floating wire clamping block facing the fixed wire clamping block. The second wire clamping groove is correspondingly arranged with the first wire clamping groove. The first compression spring is located between the floating wire clamping block and the transfer base, and under the action of the first compression spring, the floating wire clamping block is set against the fixed wire clamping block.

[0009] As an improved technical solution, the tooling guide sliding mechanism includes a first guide slide rail and a second guide slide rail. The first guide slide rail and the second guide slide rail are both fixedly installed on the frame along the X-axis direction, and the first guide slide rail and the second guide slide rail are arranged parallel to each other. The transfer base is slidably installed between the first guide slide rail and the second guide slide rail. The first guide slide rail has two sections along its length direction, and the core wire soldering device is located between the two sections of the first guide slide rail. The tooling feeding mechanism includes a fixed slide fixedly installed on the frame. A linear guide rail driven by a tooling feeding cylinder is slidably installed on the fixed slide along the X-axis direction. A plurality of guide rail follower seats are fixedly installed on the linear guide rail along its length direction. Each guide rail follower seat is provided with a tooling feeding component. The tooling feeding components are all located between the first guide rail and the second guide rail. The tooling feeding assembly includes a tooling mounting base, a tooling tool, and a second compression spring. The tooling mounting base is fixedly mounted on the guide rail follower seat. One end of the tooling tool is hinged to the tooling mounting base, and the other end of the tooling tool is provided with an integrally formed tooling feeding part. The tooling feeding part has an inclined downward pressure guide surface. The second compression spring is located between the tooling tool and the tooling mounting base, and both ends of the second compression spring are respectively connected to the tooling feeding part and the tooling mounting base.

[0010] As an improved technical solution, the tooling stop mechanism includes a first mounting bracket fixedly installed on the frame. A front stop cylinder and a rear stop cylinder are sequentially arranged on the first mounting bracket along the conveying direction of the transfer tooling. Both the front stop cylinder and the rear stop cylinder are fixedly installed on the first mounting bracket along the Z-axis direction. A front stop block is fixedly installed at the piston rod end of the front stop cylinder, and a rear stop block is fixedly installed at the piston rod end of the rear stop cylinder. The line sequence detection mechanism includes a vertical plate fixedly installed on the first mounting bracket. A camera mounting plate is fixedly installed on the top of the vertical plate. A detection camera and a light source are fixedly installed on the camera mounting plate. A lens is installed on the detection camera, and the light source is located directly below the lens.

[0011] As an improved technical solution, the wire pulling drive mechanism includes a second mounting bracket fixedly installed on the frame, a first sliding bracket driven by a wire pulling cylinder slidably mounted on the second mounting bracket along the Y-axis direction, a wire clamping cylinder fixedly mounted on the first sliding bracket along the Z-axis direction, a wire pulling knife holder fixedly mounted on the slide block of the wire clamping cylinder, and two wire pulling knives correspondingly provided, with the two wire pulling knives respectively fixedly mounted on the wire pulling knife holder; The wire stripping drive mechanism includes a third mounting bracket fixedly installed on the frame. A cap-stripping electric cylinder is fixedly installed on the third mounting bracket along the Y-axis direction. A second sliding bracket is fixedly connected to the slide of the cap-stripping electric cylinder. A wire stripping knife holder driven by a cap-stripping motor is slidably installed on the second sliding bracket along the Z-axis direction. Two wire stripping knife holders are provided accordingly. The wire stripping knife is fixedly installed on each of the two wire stripping knife holders. Under the drive of the cap-stripping motor, the two wire stripping knives slide towards each other / away from each other. A wire cap receiving box is also fixedly installed on the second sliding bracket. The wire cap receiving box is located on the side of the wire stripper away from the tooling guide sliding mechanism, and the wire cap receiving box is located between the two wire strippers. The end of the wire cap receiving box near the wire stripper has a core wire insertion port, and the bottom of the wire cap receiving box is connected to a wire cap conveying pipe.

[0012] As an improved technical solution, the tooling flipping mechanism is located between the two sections of the first guide rail. The tooling flipping mechanism includes a fourth mounting bracket fixedly installed on the frame. A flipping plate driven by a flipping cylinder is hingedly installed on the fourth mounting bracket. A flipping rail is fixedly installed on the flipping plate. When the tooling is in the tooling receiving state, the two ends of the flipping rail are respectively connected to the two sections of the first guide rail. The flux container has a double-layered tank structure, including an inner box and an outer box. The inner box is located inside the outer box, and the upper edge of the opening of the inner box is lower than the upper edge of the opening of the outer box. The bottom of the inner box is connected to a flux delivery pipe, and the bottom of the outer box is connected to a flux return pipe. The solder pot has a solder holding tank and a dross discharge port. The solder holding tank is located near the tooling flipping mechanism, the dross discharge port is located near the solder scraping mechanism, and a dross collection box is located directly below the dross discharge port. The solder scraping mechanism includes a fifth mounting bracket, on which a solder scraping mounting seat driven by a solder scraping cylinder is slidably mounted along the Y-axis direction. A solder scraping rod mounting block is hingedly mounted on the solder scraping mounting seat, and a solder scraping rod is fixedly mounted on the solder scraping rod mounting block. The solder scraping rod is located above the solder pot, and the end of the solder scraping rod near the solder pot has a solder scraping part.

[0013] As an improved technical solution, the connector feeding mechanism includes a vibratory feeder and a linear feeder. The linear feeder is located between the vibratory feeder and the material feeding mechanism, and one end of the linear feeder is connected to the discharge end of the vibratory feeder. The material feeding mechanism includes a sixth mounting bracket fixedly installed on the frame. Along the Y-axis, the sixth mounting bracket is sequentially provided with a pushing component, a distributing component, and a receiving component. The distributing component is located between the pushing component and the receiving component, and the receiving component is positioned close to the tooling guide sliding mechanism. The material distribution unit includes a material conveying guide seat fixedly installed on the sixth mounting bracket. The material conveying guide seat has a material conveying channel for sliding guidance of the connector. A material inlet connected to the material conveying channel is opened on one side of the material conveying guide seat. The other end of the linear feeder is connected to the material inlet of the material conveying guide seat. A material blocking block driven by a material blocking cylinder is also slidably installed above the material conveying guide seat along the Z-axis direction. The material blocking block is correspondingly arranged with respect to the material inlet. The pushing assembly includes a push rod that is slidably mounted on the sixth mounting bracket along the Y-axis and driven by a pushing cylinder. The push rod is correspondingly arranged with the conveying channel, and one end of the push rod near the conveying guide seat extends into the conveying channel. The receiving unit includes a receiving lifting cylinder fixedly mounted on the sixth mounting bracket along the Z-axis direction. A lifting receiving seat is fixedly mounted on the slide of the receiving lifting cylinder. The lifting receiving seat has a receiving groove, which includes a receiving guide section and a welding positioning section. The receiving guide section is located close to the feeding guide seat. The lifting receiving seat is provided with a positioning component for connector welding positioning, an optical fiber sensor for connector positioning detection, and a solder feeding guide for guiding and feeding solder wire at the corresponding position of the welding positioning section. When in the receiving state, the receiving groove corresponds to the feeding channel. The solder melting and welding mechanism includes a seventh mounting bracket fixedly installed on the frame. A third sliding bracket driven by a core wire positioning cylinder is slidably installed on the seventh mounting bracket along the Z-axis direction. A core wire positioning plate is fixedly installed on the third sliding bracket. A welding gun driven by a welding gun driving cylinder is also slidably installed on the third sliding bracket along the Z-axis direction.

[0014] As an improved technical solution, a solder pad support plate driven by a solder pad support cylinder is slidably installed on the lifting receiving seat along the Z-axis direction. The solder pad support plate is correspondingly arranged with the receiving groove, and the solder pad support plate is located at the end of the welding positioning section. The positioning component includes a ball-head plunger and an upper limit stop. The ball-head plunger is embedded in the lifting receiving seat, and the positioning ball head of the ball-head plunger extends into the welding positioning section of the receiving groove. The upper limit stop is slidably mounted on the lifting receiving seat along the X-axis and is driven by a gripper cylinder. The upper limit stop has an integrally formed pressing and limiting part. When in the welding state, the pressing and limiting part of the upper limit stop is located above the welding positioning section of the receiving groove. An optical fiber sensor for detecting connector positioning is fixedly installed on the lifting receiving seat. The optical fiber sensor is located in the welding positioning section of the receiving groove. The lifting receiving seat is also fixedly installed with a solder feeding conduit for guiding and conveying solder wire, and the outlet of the solder feeding conduit is close to the end of the welding positioning section of the receiving groove. The lifting receiving seat has an air blowing hole at the bottom of the receiving groove that communicates with the air supply device. The air blowing hole is located in the welding positioning section of the receiving groove.

[0015] As an improved technical solution, the wire harness unloading device includes an eighth mounting bracket fixedly installed on the frame, an unloading translation cylinder fixedly installed on the eighth mounting bracket along the X-axis direction, a fourth sliding bracket fixedly installed on the slide of the unloading translation cylinder, an unloading lifting cylinder fixedly installed on the fourth sliding bracket along the Z-axis direction, a wire harness gripping cylinder fixedly installed on the slide of the unloading lifting cylinder, and a wire harness picking and placing gripper fixedly installed on the gripper of the wire harness gripping cylinder; The tooling transfer device includes a tooling transfer cylinder fixedly mounted on the frame along the Z-axis direction. A tooling lifting pallet is fixedly mounted on the piston rod end of the tooling transfer cylinder. A tooling pushing cylinder is fixedly mounted on the tooling lifting pallet along the X-axis direction. A transverse top block is fixedly mounted on the piston rod end of the tooling pushing cylinder. A wire clamping block pressing cylinder is also provided on the tooling lifting pallet. The wire clamping block pressing cylinder is fixedly mounted on the tooling lifting pallet along the Z-axis direction, and a wire clamping block pressing plate is fixedly mounted on the slide of the wire clamping block pressing cylinder.

[0016] After adopting the above technical solution, the beneficial effects of the present invention are: This automatic USB wire harness welding equipment adopts a modular integrated structure design, enabling multi-process collaborative operation. Precise positioning and clamping of the wires to be processed is achieved through a rotating tooling system, providing a unified and stable processing benchmark for subsequent processing steps, ensuring the accuracy of all processes. This is the core foundation for achieving high-precision, consistent, and automated processing of wire harnesses. A double-layer circulating tooling conveyor system constructs a closed-loop circulation system. The upper tooling conveyor achieves precise step-by-step transport of the wires throughout the entire processing process, cooperating with each workstation to achieve fixed-point start / stop and precise alignment, ensuring uniform cycle time and smooth transitions between processing steps. The lower tooling conveyor, in conjunction with the end tooling, facilitates... The transfer device automatically returns empty transfer fixtures after unloading, enabling fully automated recycling and reuse of transfer fixtures. This effectively reduces turnaround time and significantly improves continuous production capacity. The wire sequence detection device performs precise real-time intelligent detection of each core wire to be processed, quickly identifying defective wires with incorrect sequences or missing cores. This prevents defective wires from entering subsequent processing steps, avoiding ineffective processing, material waste, and defective products, thus strictly controlling product processing quality from the front end of the process. The core wire straightening device straightens and corrects the core wires, unifying the straightness and processing benchmark of all core wires to be processed, ensuring precision in subsequent cutting, decapping, tinning, and soldering processes. To ensure consistency and avoid defects such as welding misalignment, cold solder joints, and incorrect soldering caused by core wire deformation, a zero-cutting and cap-stripping device is used to first cut each core wire to a specified length, then peel off the insulating cap at the end of the core wire, completely exposing the internal metal conductor. This achieves integrated operation of precise zero-cutting of core wires and automatic cap stripping, improving the standardization of core wire pretreatment. A core wire tinning device enables parallel alternating operation of flux application and tinning. First, flux is applied to the core wire conductor to ensure uniform flux adhesion to the conductor surface, then tinning is performed to ensure uniform solder adhesion to the conductor surface, providing a reliable foundation for subsequent soldering operations. The wire harness welding device enables automatic feeding, sorting, and receiving of connectors, thereby achieving orderly connector loading. It accurately and orderly transports the connectors to the welding position, precisely aligns them with the wires transported to the welding position, and completes the automatic soldering of each core conductor and each pad of the connector, realizing the welding assembly of the connector and the wires. After the wire harness welding is completed, the tooling transfer device first releases the positioning clamp of the transfer tooling on the wire harness product, and then the wire harness unloading device grabs the wire harness product on the transfer tooling and transfers it to the finished product storage box to complete the unloading of the wire harness product. Finally, the tooling transfer device transfers the empty transfer tooling to the lower tooling conveyor line for automatic return.

[0017] This USB wire harness automatic welding equipment features a compact and rational layout, high automation integration, and strong inter-mechanism coordination. It can achieve a fully integrated production line operation encompassing core wire sequence detection, core wire straightening and correction, core wire length cutting, insulation cap stripping, core wire conductor flux impregnation, core wire conductor tinning, automatic welding assembly, wire harness unloading, and tooling circulation. The seamless connection and precise linkage of each process enable accurate alignment and welding of each core wire to each connector pad, completing the automated assembly of the USB wire harness assembly. This not only makes the assembly operation highly efficient and orderly with good assembly consistency, but also greatly improves product assembly efficiency and pass rate. It can effectively meet the needs of high-precision, high-yield, large-scale, continuous, and digital automated production of USB wire harness assemblies, making it highly practical and possessing extremely high market promotion and application value. Attached Figure Description

[0018] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0019] Figure 1 This is a schematic diagram of the structure of the automatic USB wire harness welding equipment of the present invention; Figure 2 This is a three-dimensional structural diagram of the automatic USB cable harness welding equipment of the present invention after the outer frame has been removed; Figure 3 This is a schematic diagram of another three-dimensional structure of the automatic USB wire harness welding equipment of the present invention after the outer frame has been removed; Figure 4 This is a three-dimensional structural diagram of the tooling guide sliding mechanism and the tooling delivery mechanism of the present invention being installed together. Figure 5 This is another three-dimensional structural diagram of the tooling guide sliding mechanism and tooling delivery mechanism of the present invention being installed together. Figure 6 This is a three-dimensional structural diagram of one end of the tooling guide sliding mechanism of the present invention; Figure 7 This is a three-dimensional structural diagram of another end of the tooling guide sliding mechanism of the present invention; Figure 8 This is a three-dimensional structural diagram of the tooling delivery mechanism of the present invention; Figure 9 This is a schematic diagram of the tooling feeding and conveying mechanism of the present invention; Figure 10 This is a schematic diagram of the transfer tooling of the present invention; Figure 11 This is an exploded structural diagram of the transfer tooling of the present invention; Figure 12 This is a schematic diagram of the tooling delivery assembly of the present invention; Figure 13 This is a schematic diagram of the line sequence detection device of the present invention; Figure 14 This is a schematic diagram of the core wire straightening device of the present invention; Figure 15 This is a three-dimensional structural diagram of the zero-cutting cap-stripping device of the present invention; Figure 16 This is another three-dimensional structural schematic diagram of the zero-cutting cap-stripping device of the present invention; Figure 17 This is a three-dimensional structural schematic diagram of the core wire tinning device of the present invention; Figure 18 This is another three-dimensional structural schematic diagram of the core wire tinning device of the present invention; Figure 19 This is a schematic diagram of the installation structure of the flux container of the present invention on the box mounting base; Figure 20 This is a schematic diagram of the assembly structure of the solder pot and the solder scraping mechanism of the present invention. Figure 21 This is a schematic diagram of the tin scraping mechanism of the present invention; Figure 22 This is an exploded structural diagram of the part of the solder scraper rod mounted on the solder scraper mounting base of the present invention. Figure 23 This is a schematic diagram of the wire harness welding device of the present invention; Figure 24 This is a schematic diagram of the material feeding mechanism of the present invention; Figure 25 This is a schematic diagram of the assembly structure for the material distribution section and the material receiving section of the present invention. Figure 26 This is a schematic diagram of the material distribution assembly structure of the present invention; Figure 27 This is a three-dimensional structural diagram of the receiving part of the present invention; Figure 28 This is another structural schematic diagram of the receiving part of the present invention; Figure 29 This is a three-dimensional structural schematic diagram of the solder melting and welding mechanism of the present invention; Figure 30 This is another three-dimensional structural schematic diagram of the solder melting and welding mechanism of the present invention; Figure 31 This is a schematic diagram of the wire harness unloading device of the present invention; Figure 32 for Figure 30 Enlarged structural diagram of part I in the middle; Figure 33This is a schematic diagram of the cooperative installation structure of the tooling return conveying mechanism and the tooling transfer device of the present invention; Figure 34 This is a schematic diagram of the top structure of the tooling transfer device of the present invention; Reference numerals: 1-Frame; 110-Tooling transfer clearance; 2-Transfer fixture; 21-Transfer base; 211-Wire support; 212-Slide groove; 213-Card slot; 22-Wire guide plate; 23-Fixed wire clamp block; 24-Floating wire clamp block; 25-First compression spring; 3-Upper tooling conveyor line; 31-First conveyor frame; 32-Tooling feeding conveyor motor; 33-First tooling conveyor belt; 34-First limit stop; 35-First guide rail; 36-Second guide rail; 37-First rail mounting base; 38-Second rail mounting base; 39-Fixed slide block; 310-Tooling feeding cylinder; 311-Linear guide rail; 312-Guide rail follower seat; 313-Connecting block; 314-First buffer; 315-First limit screw; 316-Pulling block mounting base; 317-Tooling pulling block; 3171-Tooling feeding part; 318-Second compression spring; 4-Line sequence detection device; 41-First mounting bracket; 42-Front baffle cylinder; 43-Rear baffle cylinder; 44-Front stop block; 45-Rear stop block; 46-Upright plate; 47-Camera mounting plate; 48-Detection camera; 49-Light source; 410-Lens; 5-Core wire straightening device; 51-Second mounting bracket; 52-Wire pulling cylinder; 53-First sliding bracket; 54-Wire clamping cylinder; 55-Wire pulling knife holder; 56-Wire pulling knife; 57-Second limit screw; 6-Zero-cutting cap stripping device; 61-Third mounting bracket; 62-Cap stripping electric cylinder; 63-Second sliding bracket; 64-Cap stripping motor; 65-Wire stripper holder; 66-Wire stripper; 67-Positive and negative lead screws; 68-Lead screw nut; 69-Cap receiving box; 610-Cap conveying pipe; 7-Core wire soldering device; 71-Fourth mounting bracket; 72-Tilting cylinder; 73-Tilting plate; 74-Tilting slide rail; 75-First hinge seat; 76-Second hinge seat; 77-Connecting rod; 78-Second buffer; 79-Fluoride container; 791-Inner box; 792-Outer box; 710-Fluoride delivery pipe; 711-Fluoride return pipe; 712-Box mounting base; 713-Box mounting plate 714 - Adjusting screw; 715 - Solder pot mounting plate; 716 - Solder pot; 7161 - Solder holding tank; 7162 - Solder dross discharge port; 717 - Solder dross collection box; 718 - Heating rod; 719 - Fifth mounting bracket; 720 - Solder scraper cylinder; 721 - Solder scraper mounting base; 722 - Solder scraper rod mounting block; 723 - Solder scraper rod; 7231 - Solder scraper part; 724 - Protective cover plate; 725 - Cam; 8-Wire harness welding device; 81-Vibratory feeder; 82-Linear feeder; 83-Sixth mounting bracket; 84-Material conveying guide seat; 85-Blocking cylinder; 86-Blocking block; 87-Pushing cylinder; 88-Push rod; 89-Sliding mounting seat; 810-Third buffer; 811-Receiving lifting cylinder; 812-Lifting receiving seat; 8121-Air blowing hole; 813-Receiving top cover plate; 814-Ball plunger; 815-Upper limit stop; 816-Gripper cylinder; 817-Lifting mounting plate; 818-Welding 819-Pad support cylinder; 820-Fiber optic sensor; 821-Solder solder feed guide; 822-Conductor mounting plate; 823-Seventh mounting bracket; 824-Core wire positioning cylinder; 825-Third sliding bracket; 826-First connecting plate; 827-Second connecting plate; 828-Core wire positioning plate; 8281-Core wire positioning teeth; 829-Welding torch drive cylinder; 830-Sliding mounting plate; 831-First connecting block; 832-Second connecting block; 833-Welding torch clamp; 834-Welding torch; 9-Wire harness unloading device; 91-Eighth mounting bracket; 92-Unloading translation cylinder; 93-Fourth sliding bracket; 94-Unloading lifting cylinder; 95-Wire harness gripping cylinder; 96-Wire harness pick-and-place gripper; 10-Lower tooling conveyor line; 101-Second conveyor frame; 102-Tooling return conveyor motor; 103-Second tooling conveyor belt; 104-Drive pulley; 105-Driven pulley; 106-Synchronous belt; 107-Limit baffle; 11-Tooling transfer device; 111-Tooling transfer cylinder; 112-Tooling lifting pallet; 113-Tooling pushing cylinder; 114-Horizontal moving top block; 115-Wire clamping block pressing cylinder; 116-Wire clamping block pressing plate; 117-Second limit stop bar; 12-Finished product storage box; 13-First cable tray; 14-Second cable tray; 15-Audible and visual alarm device; 16-Control panel; 17-Cables. Detailed Implementation

[0020] 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 a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0021] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0022] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0023] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this invention.

[0024] like Figures 1 to 3 As shown in the figure, the present invention provides an automatic welding equipment for USB wire harnesses, including a frame 1. The frame 1 is equipped with a double-layer circulating tooling conveyor line. The double-layer circulating tooling conveyor line is equipped with a plurality of transfer tooling 2 for positioning and clamping wires 17. Each transfer tooling 2 can independently carry a single wire 17. The wires 17 can be positioned and clamped on each transfer tooling 2 respectively. Along the upper conveying direction of the double-layer circulating tooling conveyor line, the frame 1 is equipped with a wire sequence detection device 4, a core wire straightening device 5, a zero-cutting and cap-stripping device 6, a core wire tinning device 7, a wire harness welding device 8, and a wire harness unloading device 9. The devices work together to realize the integrated production line operation of the entire process of core wire sequence detection, core wire straightening and correction, core wire fixed-length zero cutting, insulation cap stripping, core wire conductor flux wetting, core wire conductor tinning, automatic welding assembly, and wire harness unloading, thereby realizing the automated welding assembly of USB wire harness assemblies.

[0025] like Figure 10 and Figure 11As shown in the diagram, the transfer fixture 2, serving as the core carrier for positioning, clamping, and transferring the wire 17 between various processes, is a key component ensuring the consistency of processing benchmarks across multiple processes. It includes a transfer base 21, with a wire guide plate 22 fixedly mounted at one end. The wire guide plate 22 has several evenly arranged wire guide teeth, forming core wire limiting grooves between adjacent teeth. A wire clamping assembly is provided at the other end of the transfer base 21. A wire support portion 211 is provided between the wire clamping assembly and the wire guide plate 22. The wire support portion 211 is a component of the transfer base 21. The wire 17 is in a fixed position on the transfer tooling 2. Each core wire of the wire 17 is arranged in a corresponding core wire limiting groove. The wire guide teeth separate adjacent core wires. The wire guide plate 22 effectively straightens each core wire of the wire 17, avoiding problems such as crossover, tangling, misalignment, and offset of the core wires. This makes the core wires arranged in an orderly manner. The wire clamping assembly clamps and fixes the wire 17. The wire support part 211 effectively supports the wire 17, making the wire 17 in a horizontal and orderly state.

[0026] like Figure 10 and Figure 11 As shown, the wire clamping assembly includes a fixed clamping block 23, a floating clamping block 24, and a first compression spring 25. The fixed clamping block 23 is fixedly installed on the transfer base 21, and a first clamping groove adapted to the outer diameter of the wire 17 is opened on one side of the top of the fixed clamping block 23. The floating clamping block 24 is hingedly installed on the transfer base 21, and a second clamping groove adapted to the outer diameter of the wire 17 is opened on the side of the floating clamping block 24 facing the fixed clamping block 23. The second clamping groove is correspondingly set with the first clamping groove. When the first clamping groove and the second clamping groove are engaged, a complete circular clamping hole is formed. The first compression spring 25 is located between the floating clamping block 24 and the transfer base 21, and under the action of the first compression spring 25, the floating clamping block 24 is always automatically set against the fixed clamping block 23 under normal conditions. When positioning and clamping wire 17 on the transfer fixture 2, manually pry the floating clamping block 24 away from the fixed clamping block 23, then place the wire 17 in the first clamping groove. After that, release the floating clamping block 24. Under the action of the first compression spring 25, the floating clamping block 24 automatically resets, clamping the wire 17 between the floating clamping block 24 and the fixed clamping block 23. The circular clamping hole formed by the first and second clamping grooves securely clamps and limits the wire 17, thus completing the stable clamping of the wire 17. This wire clamping assembly uses an elastic clamping method to achieve the positioning and clamping of the wire 17. The clamping force is gentle and constant, which can completely limit the movement and displacement of the wire 17 during processing, ensuring processing stability, and avoid the problem of excessive rigid clamping pressure damaging the outer sheath of the wire 17 and squeezing the core wire, causing deformation. The clamping operation is not only simple and convenient, but also secure and reliable.

[0027] Specifically, such as Figure 10 and Figure 11 As shown, the floating wire clamping block 24 includes an integrally formed hinged mounting part, a wire clamping part, a spring abutment part, and a manual pressing part. The hinged mounting part is hinged to the rotating base 21. The wire clamping part has a second wire clamping groove. The spring abutment part is located between the manual pressing part and the wire clamping part. The two ends of the first compression spring 25 abut against the rotating base 21 and the spring abutment part, respectively. When clamping the wire 17, a downward force is applied to the manual pressing part, which can separate the floating wire clamping block 24 from the fixed wire clamping block 23.

[0028] like Figures 1 to 3 As shown, the double-layer circulating tooling conveyor line includes an upper tooling conveyor line 3, a lower tooling conveyor line 10, and a tooling transfer device 11. The lower tooling conveyor line 10 is located below the upper tooling conveyor line 3, and the tooling transfer device 11 is located at the unloading end of the frame 1. It is used to transfer the unloading tooling 2 from the upper tooling conveyor line 3 to the lower tooling conveyor line 10.

[0029] like Figures 1 to 5 As shown, the upper tooling conveyor line 3 includes a tooling feeding conveyor mechanism, a tooling guiding sliding mechanism, and a tooling shifting mechanism. The tooling guiding sliding mechanism and the tooling shifting mechanism are located downstream of the tooling feeding conveyor mechanism, and one end of the tooling guiding sliding mechanism is connected to the unloading end of the tooling feeding conveyor mechanism. The wire sequence detection device 4, the core wire straightening device 5, the zero-cutting and cap-stripping device 6, the core wire tinning device 7, the wire harness welding device 8, and the wire harness unloading device 9 are all located on one side of the tooling guiding sliding mechanism and are arranged sequentially along the conveying direction of the circulating tooling 2. Several circulating tooling 2 are provided on the tooling guiding sliding mechanism, and the tooling shifting mechanism is used to perform unidirectional stepping shifting of each circulating tooling 2 on the tooling guiding sliding mechanism.

[0030] like Figure 9 As shown, the tooling feeding and conveying mechanism includes a first conveying frame 31 fixedly installed on the frame 1. A first tooling conveyor belt 33 driven by a tooling feeding and conveying motor 32 is wound around the first conveying frame 31. The tooling feeding and conveying motor 32 is fixedly installed on the first conveying frame 31. Two parallel first limiting rods 34 are also fixedly installed on the first conveying frame 31, forming a feeding limiting slide between the two first limiting rods 34 to guide and convey the transfer base 21. Through this tooling feeding and conveying mechanism, the transfer tooling 2 can be effectively and accurately conveyed to the feeding end of the tooling guiding sliding mechanism in an orderly manner.

[0031] In this embodiment, the conveying direction of the transfer fixture 2 is defined as the X-axis direction, the direction perpendicular to the conveying direction of the transfer fixture 2 on the horizontal plane is defined as the Y-axis direction, and the vertical direction is defined as the Z-axis direction.

[0032] like Figures 4 to 7 As shown, the tooling guide sliding mechanism includes a first guide slide rail 35 and a second guide slide rail 36. Both the first guide slide rail 35 and the second guide slide rail 36 are fixedly installed on the frame 1 along the X-axis direction, and the first guide slide rail 35 and the second guide slide rail 36 are arranged in parallel. The transfer base 21 is slidably installed between the first guide slide rail 35 and the second guide slide rail 36. The first guide slide rail 35 has two sections along its length direction. The installation distance of the core wire soldering device 7 is reserved between the two sections of the first guide slide rail 35. The core wire soldering device 7 is located between the two sections of the first guide slide rail 35.

[0033] Specifically, such as Figures 4 to 7 As shown, the two first guide rails 35 are fixedly installed on the frame 1 by the first guide rail mounting base 37, and the first guide rail 35 has an integrally formed sliding guide part. The bottom of the transfer base 21 is provided with a groove 212 that matches the sliding guide part. The transfer base 21 is slidably installed on the first guide rail 35 through the groove 212 and the sliding guide part. The side of the first guide rail 35 near the second guide rail 36 has an integrally formed first support edge. The second guide rail 36 is fixedly installed on the frame 1 by the second guide rail mounting base 38, and the side of the second guide rail 36 near the first guide rail 35 has an integrally formed second support edge. The bottom surface of the transfer base 21 abuts against the first support edge and the second support edge, and the other end face of the transfer base 21 abuts against the inner side of the second guide rail 36. In this way, the transfer base 21 is effectively supported and precisely limited, so that the transfer fixture 2 slides smoothly without shaking, deviation, or jamming, providing a reliable guarantee for the subsequent high-precision inspection, straightening and correction, zero-cutting and stripping of the wire 17 and tinning processing.

[0034] like Figures 4 to 8 As shown, the tooling feeding mechanism includes a fixed slide 39 fixedly mounted on the frame 1. A linear guide rail 311 driven by a tooling feeding cylinder 310 is slidably mounted on the fixed slide 39 along the X-axis direction. Several guide rail follower seats 312 are fixedly mounted on the linear guide rail 311 along its length direction. Tooling feeding components are respectively provided on the guide rail follower seats 312. The tooling feeding components are all located between the first guide slide rail 35 and the second guide slide rail 36. Specifically, the tooling feeding cylinder 310 is fixedly mounted on the frame 1 along the X-axis direction, and a connecting block 313 is installed at the end of the piston rod of the tooling feeding cylinder 310. The connecting block 313 is fixedly connected to one of the guide rail follower seats 312. When the tooling conveying cylinder 310 is working, it drives the linear guide rail 311 to slide along the X-axis direction through the connecting block 313 and the guide rail follower seat 312, thereby driving the synchronous displacement of each tooling conveying component. The tooling conveying components are used to realize the orderly step-by-step conveying of each circulating tooling 2 on the tooling guide sliding mechanism.

[0035] like Figure 4and Figure 8 As shown, the frame 1 is equipped with a first buffer 314 and a first limiting screw 315 corresponding to the connecting block 313. The first buffer 314 absorbs the kinetic energy at the end of the stroke of the tooling feeding cylinder 310, effectively absorbing the rigid impact when the cylinder stops. The first limiting screw 315 is used to precisely limit the maximum stroke of the feeding tooling 2, ensuring that the displacement of the feeding tooling 2 is uniform each time.

[0036] like Figure 8 and Figure 12 As shown, the tooling feeding assembly includes a tooling mounting base 316, a tooling tooling block 317, and a second compression spring 318. The tooling mounting base 316 is fixedly mounted on the guide rail follower base 312. One end of the tooling tooling block 317 is hinged to the tooling mounting base 316, and the other end of the tooling tooling block 317 is provided with an integrally formed tooling feeding part 3171. The tooling feeding part 3171 has an inclined downward pressure guide surface. Corresponding slots 213 are provided on both sides of the transfer base 21. The second compression spring 318 is located between the tooling tooling block 317 and the tooling mounting base 316, and both ends of the second compression spring 318 are respectively connected to the tooling feeding part 3171 and the tooling mounting base 316. The provided tooling feeding assembly adopts a unidirectional feeding and automatic avoidance elastic reset structure. When the tooling feeding cylinder 310 drives each tooling feeding assembly to move along the conveying direction of the circulating tooling 2, the tooling feeding block 317 abuts against the slot 213 on one side of the circulating base 21 through the tooling feeding part 3171, realizing the feeding of the circulating tooling 2 and moving each circulating tooling 2 forward. When the tooling feeding cylinder 310 drives each tooling feeding assembly to reset and slide in the opposite direction of the conveying direction of the circulating tooling 2, after passing through When passing the subsequent transfer base 21, the transfer base 21 can automatically press down the tooling feeding part 3171 of the tooling block 317 by pressing down the guide surface. The second compression spring 318 is compressed, so that the tooling feeding part 3171 of the tooling block 317 flips down to avoid it, and will not drive the transfer tooling 2 backward. After the tooling feeding assembly returns, the second compression spring 318 automatically pushes the tooling block 317 back to its original position, ready for the next feeding operation. In this way, unidirectional step feeding of the transfer tooling 2 is realized.

[0037] like Figure 2 and Figure 13 As shown in the figure, the line sequence detection device 4 includes a tooling stop mechanism and a line sequence detection mechanism, with the tooling stop mechanism located below the line sequence detection mechanism.

[0038] like Figure 13As shown, the tooling stop mechanism includes a first mounting bracket 41 fixedly installed on the frame 1. A front stop cylinder 42 and a rear stop cylinder 43 are sequentially arranged on the first mounting bracket 41 along the conveying direction of the transfer tooling 2. Both the front stop cylinder 42 and the rear stop cylinder 43 are fixedly installed on the first mounting bracket 41 along the Z-axis direction. A front stop block 44 is fixedly installed at the piston rod end of the front stop cylinder 42, and a rear stop block 45 is fixedly installed at the piston rod end of the rear stop cylinder 43. The tooling stop mechanism adopts a front and rear double cylinder combination stop structure. The orderly limiting, precise stopping and orderly release of the transfer tooling 2 are achieved through the independent lifting and lowering actions of the front stop cylinder 42 and the rear stop cylinder 43. During operation, when the transfer base 21 abuts against the rear stop 45, the current transfer fixture 2 is in the wire sequence detection position, and the wire sequence of the core wire of the wire 17 can be detected. After the detection is completed, if the current wire 17 is a qualified product, the rear stop cylinder 43 drives the rear stop 45 to lift up, and the fixture conveying mechanism moves the current transfer fixture 2 to the next process to straighten the core wire. Then, the rear stop cylinder 43 drives the rear stop 45 to descend and reset. After that, the front stop cylinder 42 drives the front stop 44 to lift up. When the next transfer fixture 2 moves to abut against the rear stop 45 and enters the wire sequence detection position, the front stop cylinder 42 drives the front stop 44 to descend and reset to block the subsequent transfer fixture 2, so as to avoid the subsequent fixture from affecting the wire sequence detection of the current wire 17 to be tested.

[0039] like Figure 13 As shown, the wire sequence detection mechanism includes a vertical plate 46 fixedly mounted on a first mounting bracket 41. A camera mounting plate 47 is fixedly mounted on the top of the vertical plate 46. A detection camera 48 and a light source 49 are fixedly mounted on the camera mounting plate 47. A lens 410 is mounted on the detection camera 48, and the light source 49 is located directly below the lens 410. After the transfer fixture 2 arrives at the wire sequence detection station, the wire sequence detection mechanism transmits the detection results to the equipment's algorithm system in real time through image acquisition and visual recognition. It performs intelligent comparison and analysis using preset standard wire sequence templates, core wire quantity, arrangement order, color differentiation, and other parameters to automatically and accurately determine whether the current wire 17 has various incoming material defects such as incorrect core wire sequence, missing core wires, and twisted or overlapping core wires.

[0040] like Figure 2 and Figure 14As shown, the core wire straightening device 5 includes a wire-pulling knife 56 driven by a wire-pulling drive mechanism for straightening each core wire of the wire 17; the wire-pulling drive mechanism includes a second mounting bracket 51 fixedly mounted on the frame 1, a first sliding bracket 53 driven by a wire-pulling cylinder 52 slidably mounted on the second mounting bracket 51 along the Y-axis direction, a wire-clamping cylinder 54 fixedly mounted on the first sliding bracket 53 along the Z-axis direction, and wire-pulling knife seats 55 fixedly mounted on the slide block of the wire-clamping cylinder 54 respectively, and two wire-pulling knives 56 are provided accordingly, and the two wire-pulling knives 56 are fixedly mounted on the wire-pulling knife seats 55 respectively. After the transfer fixture 2 is transported to the core wire straightening station, the wire clamping cylinder 54 works, driving the two wire pulling blades 56 to clamp the core wire. Then the wire pulling cylinder 52 works, driving the first sliding bracket 53 to move away from the transfer fixture 2, thereby straightening and correcting the core wire through the wire pulling blades 56, ensuring that the processing benchmarks of subsequent fixed-length cutting, cap stripping, and soldering processes are consistent.

[0041] Specifically, the first sliding bracket 53 is slidably mounted on the second mounting bracket 51 using a linear guide pair, and the cable-pulling cylinder 52 is fixedly mounted on the second mounting bracket 51 along the Y-axis direction, with the piston rod end of the cable-pulling cylinder 52 connected to the first sliding bracket 53.

[0042] like Figure 14 As shown, a second limiting screw 57 is threaded onto one of the wire-pulling knife holders 55. The second limiting screw 57 precisely limits the distance between the two wire-pulling knives 56 when they are pulling the wire, avoiding clamping damage to the core wire of the wire 17, and ensuring effective straightening and correction of the core wire.

[0043] Understandably, the wire puller 56 has a first strip-shaped mounting hole. The wire puller 56 is fixedly mounted on the wire puller base 55 by a positioning bolt passing through the first strip-shaped mounting hole. Loosening the positioning bolt allows the wire puller 56 to be adjusted, which facilitates fine adjustment of the spacing between the two wire pullers 56 when pulling the wire according to the outer diameter of the core wire. In this way, straightening and correction of core wires of different specifications can be achieved, making it highly versatile.

[0044] like Figure 2 , Figure 15 and Figure 16As shown, the zero-cutting and cap-stripping device 6 includes a wire stripper 66 driven by a wire stripping drive mechanism, used to first cut each core wire of the wire 17 to a fixed length and then strip the cap. The wire stripping drive mechanism includes a third mounting bracket 61 fixedly mounted on the frame 1. A cap-stripping electric cylinder 62 is fixedly mounted on the third mounting bracket 61 along the Y-axis direction. A second sliding bracket 63 is fixedly connected to the slide of the cap-stripping electric cylinder 62. A wire stripper holder 65 driven by a cap-stripping motor 64 is slidably mounted on the second sliding bracket 63 along the Z-axis direction. There are two wire stripper holders 65, and each wire stripper 66 is fixedly mounted on one of the two wire stripper holders 65. The two wire strippers 66 are arranged vertically and vertically in the Z-axis direction, and each wire stripper 66 has several stripping teeth at its stripping end. Under the drive of the cap-stripping motor 64, the two wire strippers 66 slide towards each other / backwards. The wire stripper 66 is designed to effectively cut the core wire to the correct length and strip the insulation cap without scratching or cutting the internal metal conductor, thus ensuring the integrity and conductivity of the core wire conductor.

[0045] Specifically, such as Figure 15 and Figure 16 As shown, the second sliding bracket 63 is slidably mounted on the third mounting bracket 61 using a linear guide pair. A positive and negative lead screw 67 is rotatably mounted on the second sliding bracket 63 along the Z-axis, with the threads at both ends of the lead screw 67 rotating in opposite directions. A wire stripping motor 64 is fixedly mounted on the top of the second sliding bracket 63, and its output shaft is connected to the top end of the positive and negative lead screw 67. Lead screw nuts 68 are fixedly mounted on both wire stripping blade holders 65, and the two wire stripping blade holders 65 are threadedly connected to the two ends of the positive and negative lead screw 67 via the lead screw nuts 68. When the wire stripping motor 64 operates, it drives the positive and negative lead screw 67 to rotate, thereby causing the two wire stripping blade holders 65 to slide in opposite directions, achieving the clamping of the two wire stripping blades 66 towards each other or their separation in opposite directions.

[0046] like Figure 15 and Figure 16 As shown, a wire cap receiving box 69 is also fixedly installed on the second sliding bracket 63. The wire cap receiving box 69 is located on the side of the wire stripper 66 away from the tooling guide sliding mechanism, and the wire cap receiving box 69 is located between the two wire strippers 66. The end of the wire cap receiving box 69 near the wire stripper 66 has a core wire insertion port. The bottom of the wire cap receiving box 69 is connected to a wire cap conveying pipe 610, which is connected to a negative pressure suction device. The negative pressure suction device can be a commercially available product. The waste material stripped from the core wire will fall into the wire cap receiving box 69, and will eventually be sucked away by the wire cap conveying pipe 610 and uniformly recycled. In this way, the automatic collection and centralized recycling of stripping waste material is realized.

[0047] The zero-cutting and end-insulating cap stripping device 6, based on the process steps of "first zero-cutting at a fixed length, then stripping the end-insulating caps", can perform zero-cutting at a fixed length and stripping the end-insulating caps of multiple core wires of wire 17, thereby standardizing and unifying the exposed length of the core wires, which is the key to ensuring the consistency of subsequent welding. When the transfer fixture 2 delivers the wire to the zero-cut and cap-stripping station, the cap-stripping electric cylinder 62 operates, driving the second sliding bracket 63 to move forward as a whole. This allows each core wire of the wire 17 to extend into the clamping area of ​​the two stripping blades 66, and locks the feed position according to the preset fixed-length zero-cut size. Then, the cap-stripping motor 64 drives the positive and negative lead screws 67 to rotate, causing the upper and lower stripping blade seats 65 to close rapidly towards each other. This allows the two stripping blades 66 to perform fixed-length zero-cutting operations on the core wires with uneven protrusion lengths according to the preset zero-cut position, uniformly cutting all core wires to the preset standard size, ensuring that the protrusion length of each core wire is completely consistent, and eliminating the length deviation of the incoming core wires. After completing the fixed-length zero-cutting process, the cap-stripping motor 64 drives the two stripping blades 66 to separate, and the cap-stripping electric cylinder 62 drives... The second sliding bracket 63 is moved forward to the required length of insulation cap removal. Then, the stripping motor 64 drives the lead screw 67 to make slight adjustments to the two stripping blades 66, ensuring that the blades precisely engage the outer insulation layer of the core wire end, with the bottom of the blades just touching the boundary between the insulation layer and the metal conductor. This firmly clamps the insulation layer without compressing or damaging the internal conductor. Next, the stripping cylinder 62 moves the second sliding bracket 63 slightly backward, using the stripping blades 66 to smoothly peel off the preset length of insulation cap from the core wire end, exposing the metal conductor. Finally, the stripping motor 64 drives the two stripping blades 66 to separate in opposite directions, and the stripping cylinder 62 drives the second sliding bracket 63 to reset, completing a single, zero-cut stripping operation. The stripped insulation caps automatically fall into the rear cap receiving box 69. The cap conveying pipe 610, connected to the negative pressure suction device, promptly sucks away the stripped caps from the receiving box 69 for unified collection. This step-by-step cutting and stripping process logic can precisely control the zero-cut length of the core wire, the stripping depth, and the exposed conductor size, ensuring that the processing specifications of each of the 17 core wires in each wire are highly uniform. This provides a precise dimensional reference and reliable guarantee for the uniform wetting of flux and the uniform adhesion of the solder layer in the subsequent process.

[0048] like Figure 2 , Figure 17 and Figure 18 As shown, the core wire tinning device 7 includes a tooling flipping mechanism, a flux container 79, a solder pot 716, and a tin scraping mechanism. The flux container 79 and the solder pot 716 are both located on one side of the tooling flipping mechanism, and the flux container 79 and the solder pot 716 are arranged sequentially and spaced apart along the conveying direction of the transfer tooling 2, respectively corresponding to the flux wetting station and the tinning station. The tin scraping mechanism is correspondingly arranged with the solder pot 716 and is used to scrape off the tin oxide dross on the top of the solder.

[0049] like Figure 2 , Figure 17 and Figure 18 As shown, the tooling flipping mechanism is located between the two sections of the first guide rail 35. The tooling flipping mechanism includes a fourth mounting bracket 71 fixedly installed on the frame 1. A flipping plate 73 driven by a flipping cylinder 72 is hingedly installed on the fourth mounting bracket 71. A flipping slide rail 74 is fixedly installed on the flipping plate 73. When the tooling is in the tooling receiving state, the two ends of the flipping slide rail 74 are respectively connected to the two sections of the first guide rail 35.

[0050] Specifically, such as Figure 17 and Figure 18 As shown, a first hinge seat 75 is fixedly installed on the fourth mounting bracket 71, a flip plate 73 is located above the first hinge seat 75, and a second hinge seat 76 is fixedly installed on one side of the flip plate 73. The second hinge seat 76 is hinged to the first hinge seat 75. The flip cylinder 72 is fixedly installed on the fourth mounting bracket 71 along the Z-axis direction, and a connecting rod 77 is provided between the flip cylinder 72 and the flip plate 73. One end of the connecting rod 77 is hinged to the piston rod end of the flip cylinder 72, and the other end of the connecting rod 77 is hinged to the bottom of the flip plate 73. When the flipping cylinder 72 operates, it drives the flipping plate 73 to flip, switching the flipping slide rail 74 between the receiving state and the soldering state. There are always two transfer fixtures 2 on the flipping slide rail 74, positioned at the flux-dip and solder-dip stations respectively. When the flipping cylinder 72 drives the flipping slide rail 74 to the solder-dip state, the wires 17 on the two transfer fixtures 2 are respectively coated with flux and solder. The wires 17 that have completed flux coating will be solder-dip coated in the next flipping operation. During operation, in the receiving state, both ends of the flipping slide rail 74 are precisely aligned with the two sections of the first guide slide rail 35, ensuring that the transfer fixtures 2 can be smoothly transferred to the flipping slide rail 74. Then, the flipping cylinder 72 operates, driving the flipping slide rail 74 to flip. After flipping to the correct position, the core wire end of the wire 17 can be precisely immersed into the corresponding tanks of the flux container 79 and the solder pot 716, completing the flux wetting and soldering processes in an orderly manner.

[0051] like Figure 17 and Figure 18 As shown in the figure, a second buffer 78 is also fixedly installed on the fourth mounting bracket 71, which is respectively provided at both ends of the flip plate 73; the second buffer 78 absorbs the kinetic energy of motion at the end of the stroke of the flip cylinder 72, effectively absorbing the rigid impact when the flip cylinder 72 stops.

[0052] like Figure 18 and Figure 19As shown, the flux container 79 has a double-layered tank structure, including an inner container 791 and an outer container 792. The inner container 791 is located inside the outer container 792. The inner container 791 is used to hold liquid flux, and the upper edge of the opening of the inner container 791 is lower than the upper edge of the opening of the outer container 792. The bottom of the inner container 791 is connected to a flux delivery pipe 710, which is used to fill the inner container 791 with flux. The bottom of the outer container 792 is connected to a flux return pipe 711. During the flux immersion process of the wire 17, the flux in the inner container 791 overflows into the outer container 792 and is eventually returned through the flux return pipe 711, realizing flux recycling and reuse. In this way, automatic flux replenishment and circulating supply can be achieved.

[0053] like Figure 19 As shown, a housing mounting base 712 is fixedly installed on the frame 1. A sliding limiting groove is provided on the housing mounting base 712 along the Z-axis direction. A housing mounting plate 713 is slidably installed in the sliding limiting groove. A flux container 79 is fixedly installed on the housing mounting plate 713. The flux container 79 is slidably installed on the housing mounting base 712 along the Z-axis direction through the sliding limiting groove and the housing mounting plate 713. An adjusting screw 714 is rotatably installed on the housing mounting base 712 to realize the height adjustment of the flux container 79. The height of the flux container 79 can be flexibly adjusted by adjusting the screw 714. In this way, the depth of the core wire metal conductor immersed in the flux can be flexibly adjusted according to the different core wire lengths and different immersion depth requirements of the wire 17.

[0054] like Figure 17 , Figure 18 and Figure 20 As shown, a solder pot mounting plate 715 is installed on the frame 1, and a solder pot 716 is fixedly installed on the solder pot mounting plate 715. The solder pot 716 has a solder holding tank 7161 and a solder dross discharge port 7162. The solder holding tank 7161 is located near the tooling flipping mechanism, and the solder dross discharge port 7162 is located near the solder scraping mechanism. A solder dross collection box 717 is located directly below the solder dross discharge port 7162 and is fixedly installed on the solder pot mounting plate 715. During operation, the solder holding tank 7161 contains molten liquid solder. When the oxide layer on the surface of the solder liquid is scraped off, the solder scraping mechanism scrapes the oxidized solder dross in the solder holding tank 7161 to the solder dross discharge port 7162, and finally falls from the solder dross discharge port 7162 into the solder dross collection box 717 for centralized collection.

[0055] like Figure 17 , Figure 18 and Figure 20As shown, a heating rod 718 is provided at one end of the solder pot 716. The heating rod 718 extends into the solder pot 716 and can continuously and constantly heat the solder pot 716 to precisely control the temperature of the solder liquid, ensuring that the solder is always in the best wetting state and avoiding the problems of excessive oxidation due to excessive temperature and poor wetting due to excessive temperature.

[0056] like Figure 17 , Figure 18 , Figures 20 to 22 As shown, the solder scraping mechanism includes a fifth mounting bracket 719. A solder scraping mounting base 721, driven by a solder scraping cylinder 720, is slidably mounted on the fifth mounting bracket 719 along the Y-axis direction. A solder scraping rod mounting block 722 is hinged to the solder scraping mounting base 721. A solder scraping rod 723 is fixedly mounted on the solder scraping rod mounting block 722. The solder scraping rod 723 is located above the solder pot 716, and the end of the solder scraping rod 723 near the solder pot 716 has a solder scraping part 7231. The solder scraping part 7231 is a bent scraper structure extending downwards along the direction away from the rod body 723. The bottom end of the bent scraper is a straight solder scraping edge, facing the surface of the molten solder in the solder pot 716, used to scrape away molten solder oxide dross laterally along the solder surface. The solder scraping mechanism is used to remove continuously generated molten solder oxide dross from the surface of the molten solder in real time, preventing molten solder oxide dross from adhering to the core conductor, thereby effectively ensuring the quality of subsequent soldering processes.

[0057] Specifically, such as Figure 20 and Figure 21 As shown, the fifth mounting bracket 719 is fixedly mounted on the solder pot mounting plate 715, the solder scraper mounting seat 721 is slidably mounted on the fifth mounting bracket 719 using a linear guide pair, the solder scraper cylinder 720 is fixedly mounted on the fifth mounting bracket 719, and the piston rod end of the solder scraper cylinder 720 is connected to the solder scraper mounting seat 721; a protective cover plate 724 is also fixedly mounted on the fifth mounting bracket 719.

[0058] like Figures 20 to 22As shown, one end of the squeegee mounting block 722 is hinged to the squeegee mounting base 721, and the other end of the squeegee mounting block 722 is fixedly connected to the squeegee 723. A cam 725 for resetting and lifting the squeegee 723 is also rotatably mounted on the fifth mounting bracket 719. The cam 725 is located between the squeegee mounting block 722 and the solder pot 716, and the cam 725 is located below the squeegee 723. The bottom surface of the squeegee 723 abuts against the cam 725. When the solder scraping cylinder 720 drives the solder scraping rod 723 to move along the solder holding tank 7161 towards the solder dross discharge port 7162, the bottom surface of the rod 723 contacts the base circle surface of the cam 725, and the solder scraping part 7231 at the end of the solder scraping rod 723 adheres to the surface of the molten solder to complete the dross scraping operation. This removes the oxidized solder dross from the surface of the molten solder in the solder pot 716 and scrapes it to the solder dross discharge port 7162, where it finally falls into the solder dross collection box 717 below for centralized collection, ensuring that the surface of the molten solder is clean and free of impurities during the immersion soldering operation. After the solder scraping process is completed, the tooling flipping unit drives the transfer tooling to flip twice. The core end of wire 17, after being stripped, is immersed in the solder in the solder container 7161 to complete the soldering process. Then, the tin-scraping cylinder 720 drives the tin-scraping rod 723 to reset. When the tin-scraping rod 723 resets, the bottom surface of the rod 723 contacts the protrusion of the cam 725. The cam 725 lifts the tin-scraping rod 723, raising the tin-scraping edge away from the surface of the solder pot 716, thus avoiding interference and collision between the tin-scraping rod 723 and the solder pot 716, and ensuring that the tin-scraping rod 723 resets smoothly. In this way, a fully automatic slag removal, adaptive avoidance, and precise reset continuous operation is achieved.

[0059] Understandable, such as Figures 20 to 22 As shown, a second strip-shaped mounting hole is provided at one end of the squeegee 723 near the squeegee mounting block 722. The squeegee 723 is fixedly mounted on the squeegee mounting block 722 by a positioning bolt passing through the second strip-shaped mounting hole. The squeegee 723 can be finely adjusted by loosening the positioning bolt to ensure that the squeegee 723 can accurately scrape off the oxide layer on the solder in the solder pot 716.

[0060] like Figure 2 and Figure 23 As shown, the wire harness welding device 8 includes a connector feeding mechanism, a feeding and sorting mechanism, and a soldering mechanism. The connector feeding mechanism is located upstream of the feeding and sorting mechanism, and the soldering mechanism is located above the wire harness welding position. This wire harness welding device 8 automatically feeds connectors through the connector feeding mechanism, orderly feeds connectors through the feeding and sorting mechanism, precisely and orderly delivers the connectors to the welding position, and positions each core of the wire 17 and completes the welding of the connector to the wire 17 through the soldering mechanism.

[0061] like Figures 1 to 3As shown, the connector feeding mechanism includes a vibratory feeder 81 and a linear feeder 82 fixedly mounted on the frame 1. The linear feeder 82 is located between the vibratory feeder 81 and the material feeding mechanism, and one end of the linear feeder 82 is connected to the discharge end of the vibratory feeder 81. The connector feeding mechanism is used to automatically feed connectors to the material feeding mechanism.

[0062] like Figure 23 As shown, the material feeding mechanism includes a sixth mounting bracket 83 fixedly installed on the frame 1. The sixth mounting bracket 83 is provided with a pushing part, a distributing part and a receiving part in sequence along the Y-axis direction. The distributing part is located between the pushing part and the receiving part, and the receiving part is located close to the tooling guide sliding mechanism.

[0063] like Figures 23 to 26 As shown, the material distribution assembly includes a material conveying guide seat 84 fixedly mounted on the sixth mounting bracket 83. The material conveying guide seat 84 has a material conveying channel for sliding guidance of the connector, and a feed port connected to the material conveying channel is opened on one side of the material conveying guide seat 84. The other end of the linear feeder 82 is connected to the feed port of the material conveying guide seat 84. During operation, the connectors from the connector feeding mechanism enter the material conveying channel through the feed port, and only one connector is allowed to enter the material conveying channel at a time. After the connector enters the material conveying channel, it is guided and conveyed within the material conveying channel. Under the action of the pushing assembly, the connector in the material conveying channel is pushed to the receiving assembly.

[0064] like Figures 23 to 26 As shown, to ensure that only one connector is allowed to enter the feeding channel at a time, a baffle block 86 driven by a baffle cylinder 85 is slidably installed above the feeding guide seat 84 along the Z-axis. The baffle block 86 is correspondingly set to the feed inlet. When the baffle cylinder 85 operates, it drives the baffle block 86 to move up and down, thereby opening or blocking the feed inlet. When the baffle cylinder 85 drives the baffle block 86 to move downward to block the feed inlet, it can prevent the connector from entering the feeding channel. When the baffle cylinder 85 drives the baffle block 86 to rise to open the feed inlet, the connector can enter the feeding channel through the feed inlet. After the connector enters the feeding channel, the baffle cylinder 85 drives the baffle block 86 to move downward to re-block the feed inlet, thereby blocking the next connector and ensuring that only one connector enters the feeding channel at a time. In this way, the connectors are distributed in an orderly manner, avoiding the accumulation and jamming of multiple connectors and ensuring a stable feeding rhythm.

[0065] like Figure 23 and Figure 24As shown, the pusher assembly is used to smoothly push the connector entering the feeding channel to the receiving assembly. It includes a push rod 88 that is slidably mounted on the sixth mounting bracket 83 along the Y-axis and driven by the pusher cylinder 87. The push rod 88 is correspondingly arranged with the feeding channel, and one end of the push rod 88 near the feeding guide seat 84 extends into the feeding channel to realize the pushing of the connector. During operation, the pusher cylinder 87 drives the push rod 88 to move back to its original position, thereby orderly pushing the connectors in the feeding channel. After the connector enters the feeding channel through the feed inlet, the baffle cylinder 85 drives the baffle block 86 to block the feed inlet, thus blocking the next connector. Then, the pusher cylinder 87 drives the push rod 88 to move towards the receiving assembly, pushing the connector to the receiving assembly. After that, the pusher cylinder 87 drives the push rod 88 to return to its original position. Then, the baffle cylinder 85 drives the baffle block 86 to lift and open the feed inlet, allowing the next connector to be placed into the feeding channel for pushing the next connector. This process is repeated, and through cooperation with the sorting assembly, the automated and orderly sorting and feeding of connectors is achieved.

[0066] Specifically, such as Figure 24 As shown, a sliding mounting seat 89 is slidably mounted on the sixth mounting bracket 83 via a linear guide pair. A push rod 88 is fixedly mounted on the sliding mounting seat 89. A push cylinder 87 is fixedly mounted on the sixth mounting bracket 83 along the Y-axis direction, and the piston rod end of the push cylinder 87 is connected to the sliding mounting seat 89.

[0067] like Figure 24 As shown, a third buffer 810 corresponding to the sliding mounting seat 89 is also fixedly installed on the sixth mounting bracket 83. The third buffer 810 is located near the material feeding guide seat 84. After the push rod 88 pushes the connector into place, it can flexibly buffer and limit the sliding mounting seat 89, ensuring that the push rod 88 can accurately push each connector to the receiving part.

[0068] like Figures 23 to 25 , Figure 27 and Figure 28 As shown, the receiving assembly includes a receiving lifting cylinder 811 fixedly mounted on the sixth mounting bracket 83 along the Z-axis. A lifting receiving seat 812 is fixedly mounted on the slide of the receiving lifting cylinder 811. The lifting receiving seat 812 has a receiving groove, which includes a receiving guide section and a welding positioning section. The receiving guide section is located near the conveying guide seat 84. A positioning component for positioning the connector for welding is provided on the lifting receiving seat 812 at the corresponding position of the welding positioning section. When in the receiving state, the receiving groove corresponds to the conveying channel. This receiving assembly is used to receive the connector pushed from the dispensing assembly and accurately transfer the connector to the welding position.

[0069] like Figure 27 and Figure 28As shown, a receiving cover plate 813 is fixedly installed on the lifting receiving seat 812 at the corresponding position of the receiving guide section. The receiving cover plate 813 and the lifting receiving seat 812 form a receiving channel. When in the receiving state, the receiving channel corresponds to the conveying channel. Under the pushing action of the push rod 88, the connector in the conveying channel can be pushed through the receiving channel to the welding positioning section of the receiving groove.

[0070] like Figure 27 and Figure 28 As shown, the positioning assembly includes a ball plunger 814 and an upper limit stop 815. The ball plunger 814 is embedded in the lifting receiving seat 812, and the positioning ball of the ball plunger 814 extends into the welding positioning section of the receiving groove. When the connector is pushed into the welding positioning section of the receiving groove, the ball plunger 814 achieves precise positioning of the connector, ensuring that the connector stops precisely. The upper limit stop 815 is slidably mounted on the lifting receiving seat 812 along the X-axis and is driven by the gripper cylinder 816. The upper limit stop 815 has an integrally formed pressing and limiting part. When in the welding state, the pressing and limiting part of the upper limit stop 815 is located above the welding positioning section of the receiving groove, so that the pressing and limiting part presses on the connector, which can prevent the connector from lifting during the welding process and achieve the limiting and fixing of the connector. After the wire harness is welded, the gripper cylinder 816 drives the upper limit stop 815 to reset, and the welded wire harness can be removed.

[0071] Specifically, such as Figure 27 and Figure 28 As shown, a lifting mounting plate 817 is fixedly installed on the slide of the receiving lifting cylinder 811. A gripper cylinder 816 is fixedly installed on the lifting mounting plate 817. A stop-limiting groove is provided on the lifting receiving seat 812 to guide the upper limit stop 815. The upper limit stop 815 is fixedly connected to one of the gripper blocks of the gripper cylinder 816. When the gripper cylinder 816 operates, it drives the upper limit stop 815 to slide. Understandably, during installation, only one gripper block of the gripper cylinder 816 is retained for fixed connection with the upper limit stop 815, while the other gripper block of the gripper cylinder 816 is cut off. During operation, the gripper cylinder 816 operates, causing the upper limit stop 815 to slide along the X-axis.

[0072] like Figure 27As shown, a solder pad support plate 819, driven by a solder pad support cylinder 818, is slidably mounted on the lifting receiving seat 812 along the Z-axis direction. The solder pad support plate 819 is correspondingly arranged with the receiving groove and is located at the end of the welding positioning section to support the connector solder pads. Specifically, the solder pad support cylinder 818 is fixedly mounted on the lifting mounting plate 817 along the Z-axis direction. The lifting receiving seat 812 has a support plate limiting groove for guiding the sliding of the solder pad support plate 819. The piston rod end of the solder pad support cylinder 818 is connected to the solder pad support plate 819. When the connector is pushed to the welding position of the lifting receiving seat 812, the solder pad support cylinder 818 drives the solder pad support plate 819 to rise, thereby supporting each solder pad of the connector, preventing the solder pads from being suspended and sinking due to force, and ensuring accurate alignment with each core wire of the wire 17 in the subsequent process.

[0073] like Figure 27 and Figure 28 As shown, a fiber optic sensor 820 for detecting connector positioning is fixedly installed on the lifting receiving seat 812. The fiber optic sensor 820 is located in the welding positioning section of the receiving groove. The fiber optic sensor 820 can monitor whether the connector is in position in real time. When the connector is pushed to the welding positioning section of the receiving groove and is precisely stopped by the ball plunger 814, the fiber optic sensor 820 can detect the connector's positioning information in a timely manner and feed the detection information back to the control system. The control system controls the gripper cylinder 816 and the pad support cylinder 818 to work. The gripper cylinder 816 drives the upper limit stop 815 to press against the connector, thereby limiting and fixing the connector. The pad support cylinder 818 drives the pad support plate 819 to rise, thereby supporting each pad of the connector. Then, the receiving lifting cylinder 811 works, driving the lifting receiving seat 812 to rise and lift the connector to the welding position, so that each pad of the connector is precisely aligned with each core wire of the wire 17, ready for the subsequent welding operation by the solder melting and welding mechanism.

[0074] like Figure 27 and Figure 28 As shown, a solder feeding guide 821 for guiding and conveying solder wire is also fixedly installed on the lifting receiving base 812. The outlet of the solder feeding guide 821 is close to the end of the welding positioning section of the receiving trough. The solder feeding guide 821 enables precise delivery of solder wire to the welding area, meeting the requirements of automated wire harness welding. Specifically, the solder feeding guide 821 is fixedly installed on the lifting receiving base 812 via a guide mounting plate 822. The guide mounting plate 822 allows for fine-tuning of the installation position and angle of the solder feeding guide 821, ensuring precise delivery of the solder wire.

[0075] like Figure 27As shown, the lifting receiving seat 812 has an air blowing hole 8121 at the bottom of the receiving groove, which communicates with an external air supply device. The air blowing hole 8121 is located in the welding positioning section of the receiving groove. After the welding of the current wire harness is completed, the gripper cylinder 816 drives the upper limit stop 815 to reset and retract, releasing the pressure on the connector. Then, the welded connector can be blown up through the air blowing hole 8121, causing the connector to be removed from the positioning component, so that the welded wire harness product can be taken away.

[0076] This receiving assembly, equipped with positioning components and a solder pad support plate 819, enables precise positioning of the connector and accurate support of the connector solder pads. Combined with the positioning detection function of the fiber optic sensor 820, it ensures accurate positioning and stable fixation of the connector, ensuring that each core conductor corresponds precisely to the connector solder pad. This effectively avoids welding defects such as cold solder joints, missing solder joints, incorrect solder joints, and short circuits in the core wires. While ensuring the welding quality of the wire harness, it also ensures the welding consistency of batch products, significantly improving the finished product qualification rate.

[0077] like Figure 23 , Figure 29 , Figure 30 and Figure 32 As shown, the solder melting and soldering mechanism includes a seventh mounting bracket 823 fixedly mounted on the frame 1. A third sliding bracket 825 driven by a core wire positioning cylinder 824 is slidably mounted on the seventh mounting bracket 823 along the Z-axis direction. A core wire positioning plate 828 is fixedly mounted on the third sliding bracket 825. A soldering gun 834 driven by a soldering gun driving cylinder 829 is also slidably mounted on the third sliding bracket 825 along the Z-axis direction.

[0078] Specifically, such as Figure 29 , Figure 30 and Figure 32 As shown, the third sliding bracket 825 is slidably mounted on the seventh mounting bracket 823 using a linear guide pair. The core wire positioning cylinder 824 is fixedly mounted on the top of the seventh mounting bracket 823 along the Z-axis direction, and the piston rod end of the core wire positioning cylinder 824 is connected to the third sliding bracket 825. When the core wire positioning cylinder 824 is working, it drives the third sliding bracket 825 to move smoothly up and down, thereby moving the core wire positioning plate 828 up and down.

[0079] Understandable, such as Figure 29 , Figure 30 and Figure 32As shown, the core wire positioning plate 828 is fixedly mounted on the third sliding bracket 825 using the first connecting plate 826 and the second connecting plate 827. One end of the first connecting plate 826 has a third strip-shaped mounting hole along the Y-axis, and this end is fixedly connected to the third sliding bracket 825 using a positioning bolt passing through the third strip-shaped mounting hole. The other end of the first connecting plate 826 has a fourth strip-shaped mounting hole along the Z-axis. One end of the second connecting plate 827 is fixedly connected to the other end of the first connecting plate 826 using a positioning bolt passing through the fourth strip-shaped mounting hole. One end of the core wire positioning plate 828 has a fifth strip-shaped mounting hole along the X-axis, and this end is fixedly connected to the other end of the second connecting plate 827 using a positioning bolt passing through the fifth strip-shaped mounting hole. This allows for fine-tuning of the installation position of the core wire positioning plate 828, thereby ensuring precise positioning of each core wire of the wire 17.

[0080] like Figure 30 and Figure 32 As shown, the core wire positioning plate 828 has several integrally formed core wire positioning teeth 8281, which are evenly arranged and form core wire positioning slots between adjacent core wire positioning teeth 8281. The core wire positioning slots can organize, separate, and limit the multiple functional core wires of the wire 17, accurately defining the position and spacing of each core wire, ensuring that each core wire of the wire 17 can be accurately aligned with each pad of the connector. When the wire 17 moves to the soldering position, the core wire positioning cylinder 824 works, driving the core wire positioning plate 828 to move downward, locking each core wire of the wire 17 into the core wire positioning slot. Through the separating and limiting effect of the positioning teeth, the spacing between each core wire is uniform, the position is fixed, and they do not overlap, accurately defining the conductor position of each core wire, realizing the positioning of each core wire of the wire 17, and ensuring that the core wire corresponds one-to-one with the connector pad.

[0081] Specifically, such as Figure 29 , Figure 30 and Figure 32As shown, a sliding mounting plate 830 is slidably mounted on the third sliding bracket 825 via a linear guide pair. A first connecting block 831 is fixedly mounted on the sliding mounting plate 830, a second connecting block 832 is fixedly mounted on the first connecting block 831, a welding torch clamping block 833 is fixedly mounted on the second connecting block 832, and a welding torch 834 is fixedly mounted on the welding torch clamping block 833. A welding torch drive cylinder 829 is fixedly mounted on the third sliding bracket 825 along the Z-axis direction, and the piston rod end of the welding torch drive cylinder 829 is connected to the sliding mounting plate 830. The welding gun drive cylinder 829 works, driving the welding gun 834 to move up and down. When the core wire positioning plate 828 completes the positioning of each core wire of the wire 17, and the feeding mechanism moves the connector to be welded to the welding position, achieving precise alignment between each pad of the connector and each core wire of the wire 17, the welding gun drive cylinder 829 drives the welding gun 834 to move downward to achieve welding between each pad of the connector and each conductor of the core wire of the wire 17.

[0082] Understandable, such as Figure 29 , Figure 30 and Figure 32 As shown, one end of the first connecting block 831 has a sixth strip-shaped mounting hole along the X-axis. One end of the first connecting block 831 is fixedly connected to the sliding mounting plate 830 using a positioning bolt passing through the sixth strip-shaped mounting hole. One end of the second connecting block 832 has a seventh strip-shaped mounting hole along the Y-axis. One end of the second connecting block 832 is fixedly connected to the other end of the first connecting block 831 using a positioning bolt passing through the seventh strip-shaped mounting hole. The welding torch clamp 833 is fixedly mounted on the other end of the second connecting block 832. This allows for fine-tuning of the mounting position of the welding torch 834, thereby ensuring precise welding of the overlap positions between the connector's solder pads and the conductors of the wire 17.

[0083] During welding operations, connectors to be welded are supplied to the feeding channel of the feeding guide seat 84 through the feeding port. The blocking cylinder 85 drives the blocking block 86 to rise and fall intermittently, so as to achieve orderly material distribution of connectors and avoid material accumulation and jamming. Then, the pushing cylinder 87 drives the push rod 88 to move, and smoothly pushes the individual connectors into the receiving groove of the lifting receiving seat 812, completing the automatic feeding of connectors. After the connectors enter the receiving groove, the ball plunger 814 accurately stops the connectors and accurately positions the connectors in the welding positioning section of the receiving groove. At this time, the fiber optic sensor 820 senses that the workpiece is in place, and then the gripper cylinder 816 drives the upper limit stop block 815 to move, pressing the limiting part to cover the upper surface of the connector. At the same time, the pad support cylinder 818 drives the pad support plate 819 to move upward, accurately supporting each pad of the connector. Meanwhile, the wire 17 to be welded is transported to the welding station. The core wire positioning cylinder 824 drives the core wire positioning plate 828 to descend, completing the positioning of each core wire of the wire 17. Then, the receiving lifting cylinder 811 drives the lifting receiving seat 812 to rise as a whole, accurately raising the connector to the preset welding height, realizing the precise alignment between each pad of the connector and each core wire of the wire 17. Finally, the welding gun driving cylinder 829 drives the welding gun 834 to approach the welding point, and with the help of the solder feeding guide 821, the solder is automatically fed to complete the precise welding of each core wire of the wire 17 to each pad of the connector. After welding is completed, the welding gun drive cylinder 829 drives the welding gun 834 to rise and reset, the core wire positioning cylinder 824 drives the core wire positioning plate 828 to rise and reset, and the receiving lifting cylinder 811 drives the lifting receiving seat 812 to fall and reset. Then, the solder pad support cylinder 818 drives the solder pad support plate 819 to fall and reset, and the gripper cylinder 816 drives the upper limit stop block 815 to reset and retract to release the pressure on the connector. At the same time, the pusher cylinder 87 drives the push rod 88 to retract. Afterward, the air blowing hole 8121 blows the connector up, and the welded wire harness product can be removed. During the finished product unloading process, the stop cylinder 85 drives the stop block 86 to rise, placing the next connector to be welded into the feeding channel of the feeding guide seat 84. The device automatically enters the next cycle, continuously completing the entire automatic welding process of connectors and core wires, realizing batch continuous production.

[0084] like Figure 2 and Figure 31 As shown, the wire harness unloading device 9 is located above the tooling transfer device 11, and the unloading end of the frame 1 is fixedly installed with a finished product storage box 12 for placing wire harness products. The unloading end of the frame 1 is also provided with a tooling transfer clearance opening 110 between the wire harness unloading device 9 and the tooling transfer device 11. The tooling transfer device 11 transfers the unloaded empty rotating tooling 2 from the tooling guide sliding mechanism to the lower tooling conveyor line 10 through the tooling transfer clearance opening 110.

[0085] like Figure 2 and Figure 31As shown, the wire harness unloading device 9 includes an eighth mounting bracket 91 fixedly mounted on the frame 1. An unloading translation cylinder 92 is fixedly mounted on the eighth mounting bracket 91 along the X-axis direction. A fourth sliding bracket 93 is fixedly mounted on the slide of the unloading translation cylinder 92. An unloading lifting cylinder 94 is fixedly mounted on the fourth sliding bracket 93 along the Z-axis direction. A wire harness gripping cylinder 95 is fixedly mounted on the slide of the unloading lifting cylinder 94. A wire harness pick-and-place gripper 96 for picking up and placing wire harnesses is fixedly mounted on the gripper of the wire harness gripping cylinder 95. After the wire 17 and connector are welded and assembled at the welding station, the connector is blown up through the air blower 8121, causing the connector to be released from the positioning state. Then, the transfer fixture 2, together with the wire harness product, enters the unloading station. Afterward, the clamping state of the transfer fixture 2 on the wire 17 is released by the fixture transfer device 11. Finally, the unloading translation cylinder 92, the unloading lifting cylinder 94 and the wire harness gripping cylinder 95 work together to transfer the wire harness that has been welded and assembled at the unloading station to the finished product storage box 12 through the wire harness pick-and-place gripper 96, thus realizing the unloading of the wire harness product.

[0086] like Figure 33 and Figure 34 As shown, the tooling transfer device 11 is correspondingly provided with the tooling transfer clearance opening 110. The tooling transfer device 11 includes a tooling transfer cylinder 111 fixedly installed on the frame 1 along the Z-axis direction. A tooling lifting pallet 112 is fixedly installed on the piston rod end of the tooling transfer cylinder 111. A tooling pushing cylinder 113 is fixedly installed on the tooling lifting pallet 112 along the X-axis direction. A transverse top block 114 is fixedly installed on the piston rod end of the tooling pushing cylinder 113. A wire clamping block pressing cylinder 115 is also provided on the tooling lifting pallet 112. The wire clamping block pressing cylinder 115 is fixedly installed on the tooling lifting pallet 112 along the Z-axis direction, and a wire clamping block pressing plate 116 is fixedly installed on the slide of the wire clamping block pressing cylinder 115. After the wire harness welding and assembly is completed, the tooling transfer cylinder 111 drives the tooling lifting pallet 112 to rise, so that the tooling lifting pallet 112 is connected to the tooling guide sliding mechanism. Then, the transfer tooling 2 with the wire harness product clamped is transferred to the tooling lifting pallet 112 and enters the unloading station. After that, the wire clamping block pressing cylinder 115 works, driving the wire clamping block pressing plate 116 to move downward. The wire clamping block pressing plate 116 abuts against the manual pressing part of the floating wire clamping block 24 and presses down the manual pressing part, thereby releasing the wire clamping assembly from the wire. After clamping material 17, wire harness unloading device 9 unloads the wire harness product. After unloading, clamping block pressing cylinder 115 drives clamping block pressing plate 116 to lift and reset, and tooling transfer cylinder 111 drives tooling lifting pallet 112 to lower and reset, transferring the unloaded empty flow tooling 2 from upper tooling conveyor line 3 to lower tooling conveyor line 10. Finally, tooling push cylinder 113 drives transverse top block 114 to move, pushing the flow tooling on tooling lifting pallet 112 to lower tooling conveyor line 10.

[0087] like Figure 34 As shown, two parallel second limit bars 117 are also fixedly installed on the tooling lifting pallet 112, and the two second limit bars 117 form a material transfer limiting slide for guiding and conveying the transfer base 21.

[0088] like Figure 33 As shown, the lower tooling conveyor line 10 includes a tooling return conveyor mechanism, and the tooling transfer device 11 is located at the loading end of the tooling return conveyor mechanism. The tooling return conveyor mechanism includes a second conveyor frame 101 fixedly installed on the frame 1. A second tooling conveyor belt 103 driven by a tooling return conveyor motor 102 is wound around the second conveyor frame 101. The tooling return conveyor motor 102 is fixedly installed on the second conveyor frame 101, and the tooling return conveyor motor 102 is connected to the roller shaft of the second tooling conveyor belt 103 through a driving pulley 104, a driven pulley 105, and a synchronous belt 106. Two parallel limit baffles 107 are also fixedly installed on the second conveyor frame 101, and a return limit slide is formed between the two limit baffles 107 to realize the guiding and conveying of the transfer base 21. The tooling return conveying mechanism can effectively ensure the precise and orderly return conveying of the transfer tooling 2, realizing the cyclical circulation and reuse of the transfer tooling 2.

[0089] like Figure 1 As shown, the frame 1 is also equipped with a first wire support plate 13 and a second wire support plate 14. Both the first wire support plate 13 and the second wire support plate 14 are arranged along the length of the frame 1, and the second wire support plate 14 is located below the first wire support plate 13. During operation, the first wire support plate 13 supports the wire 17, ensuring that the overhanging part of the wire 17 extending from the flow tool 2 is reliably supported, preventing the wire 17 from sagging due to its own weight. When the wire 17 is long, the tail of the wire 17 falls onto the second wire support plate. Plate 14, the first wire support plate 13 and the second wire support plate 14 together realize the layered and graded support of the wire 17. The long wire 17 can be supported and limited by the first wire support plate 13 and the second wire support plate 14 in sections, which effectively eliminates the bending deformation caused by the large span of the long wire 17. This ensures that the wire 17 maintains a relatively stable posture throughout the entire processing process, and there will be no dragging or swaying of the tail of the wire 17, thus ensuring the posture stability of the wire 17 in each workstation.

[0090] like Figure 1As shown, the top of the frame 1 is also equipped with an audible and visual alarm device 15 and a control panel 16. The control panel 16 integrates the equipment's main control unit, a human-machine interface display screen, operation buttons, and status indicator lights. The audible and visual alarm device 15 is electrically connected to the equipment control system. Operators can set and retrieve equipment operating parameters through the control panel 16, including inputting, modifying, storing, and retrieving process parameters such as core wire cutting length, decapping depth, soldering time, welding temperature, station cycle time, motion parameters of each cylinder and electric cylinder, and visual inspection threshold. At the same time, operators can view the real-time operating status of each station, production count, defective product statistics, fault codes, and other equipment operating information, realizing whole-machine process debugging, parameter management, and production monitoring, facilitating operators to carry out debugging, trial production, and mass production operations. The audible and visual alarm device 15 can be connected to various fault signals and abnormal incoming material signals of the equipment. When an abnormal working condition occurs, the audible and visual alarm device 15 will work to promptly remind the on-site operators to intervene and handle the situation. At the same time, the equipment can work with the control system to achieve selective shutdown or workstation pause, avoiding the continuous operation of the equipment with faults, which would cause batch scrapping and secondary damage to the equipment, thereby improving the safety of equipment operation, fault response efficiency and overall machine maintainability.

[0091] Based on the above structure, this automatic USB wire harness welding equipment adopts a modular integrated structure design, realizing multi-process collaborative operation. The transfer fixture 2 achieves precise positioning and clamping of the wire 17 to be processed, providing a unified and stable processing benchmark for subsequent processing steps, ensuring the accuracy of all processes. This is the core foundation for achieving high-precision, consistent, and automated processing of the wire harness. A double-layer circulating fixture conveyor line constructs a closed-loop circulation system. The upper fixture conveyor line 3 achieves precise step-by-step transport of the wire 17 throughout the entire processing process, cooperating with each workstation to achieve fixed-point start / stop and precise alignment, ensuring uniform cycle time and smooth connection of each processing step. The lower fixture conveyor line 10, at the end... The tooling transfer device 11 can automatically return the empty transfer tooling 2 after unloading, realizing fully automatic recycling of the transfer tooling 2, effectively reducing the turnaround time of the transfer tooling 2 and greatly improving the continuous production capacity of the equipment; the wire sequence detection device 4 can perform precise real-time intelligent detection on each core wire of the wire 17 to be processed, quickly identifying defective wires 17 such as those with disordered wire sequence or missing cores, preventing defective wires 17 from entering subsequent processing steps, avoiding ineffective processing, material waste and defective product output, and strictly controlling product processing quality from the front end of the process; the core wire straightening device 5 can straighten and correct the core wires, unifying the straightness and processing benchmark of all core wires to be processed, ensuring the subsequent cutting, cap removal, tinning and welding processes. The consistent processing precision of the sequence avoids defects such as welding misalignment, incomplete welding, and incorrect welding caused by core wire deformation; the zero-cutting and cap-stripping device 6 first performs fixed-length zero-cutting on each core wire, cutting each core wire to the specified size, and then peels off the insulating cap at the end of the core wire, completely exposing the internal metal conductor, thus realizing the integrated operation of fixed-length precise zero-cutting of core wire and automatic removal of insulating cap, improving the standardization of core wire pretreatment; the core wire tinning device 7 realizes parallel alternating operation of flux application and tinning in two stations, first completing the flux wetting treatment of the core wire conductor to ensure uniform flux coating on the conductor surface, and then completing the tinning treatment to ensure uniform solder coating on the conductor surface, providing a reliable guarantee for subsequent welding operations; through the wire The wire harness welding device 8 can realize the automatic feeding, sorting and receiving of connectors, thereby realizing the orderly feeding of connectors and accurately and orderly conveying the connectors to the welding position, accurately aligning them with the wires 17 conveyed to the welding position, and completing the automatic soldering of each core conductor and each pad of the connector, realizing the welding assembly of the connector and the wires 17. After the wire harness welding is completed, the tooling transfer device 11 first releases the positioning clamp of the transfer tooling 2 on the wire harness product, and then the wire harness unloading device 9 grabs the wire harness product on the transfer tooling 2 and transfers it to the finished product storage box 12 to complete the unloading of the wire harness product. Finally, the tooling transfer device 11 transfers the empty transfer tooling 2 to the lower tooling conveyor line 10 for automatic return.

[0092] This USB wire harness automatic welding equipment features a compact and rational layout, high automation integration, and strong inter-mechanism coordination. It can achieve a fully integrated production line operation encompassing core wire sequence detection, core wire straightening and correction, core wire length cutting, insulation cap stripping, core wire conductor flux impregnation, core wire conductor tinning, automatic welding assembly, wire harness unloading, and tooling circulation. The seamless connection and precise linkage of each process enable precise alignment and welding of the 17 core wires of the wire harness with the solder pads of the connector, completing the automated assembly of the USB wire harness assembly. This not only makes the assembly operation highly efficient and orderly with good assembly consistency, but also greatly improves product assembly efficiency and pass rate. It can effectively meet the needs of high-precision, high-yield, large-scale, continuous, and digital automated production of USB wire harness assemblies, making it highly practical and possessing extremely high market promotion and application value.

[0093] It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of protection of the invention. Furthermore, it should be understood that after reading the technical description of this invention, those skilled in the art can make various alterations, modifications, and / or variations to the invention, and all such equivalent forms also fall within the scope of protection defined by the appended claims.

Claims

1. An automatic welding device for USB wire harnesses, characterized in that, The system includes a frame, on which a double-layer circulating tooling conveyor line is mounted. The double-layer circulating tooling conveyor line is equipped with several transfer fixtures for positioning and clamping wires. Along the upper conveying direction of the double-layer circulating tooling conveyor line, the frame is sequentially equipped with a wire sequence detection device, a core wire straightening device, a zero-cutting and cap-stripping device, a core wire tinning device, a wire harness welding device, and a wire harness unloading device. The double-layer circulating tooling conveyor line includes an upper tooling conveyor line, a lower tooling conveyor line, and a tooling transfer device. The lower tooling conveyor line is located below the upper tooling conveyor line, and the tooling transfer device is located at the unloading end of the frame, used to transfer the unloading tooling from the upper tooling conveyor line to the lower tooling conveyor line. The upper tooling conveyor line includes a tooling guide sliding mechanism, which includes a first guide slide rail and a second guide slide rail. The first guide slide rail and the second guide slide rail are both fixedly installed on the frame along the X-axis direction, and the first guide slide rail and the second guide slide rail are arranged parallel to each other. The line sequence detection device includes a tooling stop mechanism and a line sequence detection mechanism, wherein the tooling stop mechanism is located below the line sequence detection mechanism; The core wire straightening device includes a wire-pulling knife driven by a wire-pulling drive mechanism for straightening each core wire of the wire. The zero-cut and cap-stripping device includes a wire stripping knife driven by a wire stripping drive mechanism, used to first cut each core wire of the wire to a fixed length and then strip the cap. The core wire tinning device includes a tooling flipping mechanism, a flux container, a solder pot, and a tin scraping mechanism. The flux container and the solder pot are both located on one side of the tooling flipping mechanism, and the flux container and the solder pot are arranged sequentially and spaced apart along the conveying direction of the transfer tooling. The tin scraping mechanism is arranged correspondingly to the solder pot. The tooling flipping mechanism is located between the two sections of the first guide rail. The tooling flipping mechanism includes a fourth mounting bracket fixedly installed on the frame. A flipping plate driven by a flipping cylinder is hingedly installed on the fourth mounting bracket. A flipping rail is fixedly installed on the flipping plate. When the tooling is in the tooling receiving state, the two ends of the flipping rail are respectively connected to the two sections of the first guide rail. The flux container has a double-layered tank structure, including an inner box and an outer box. The inner box is located inside the outer box, and the upper edge of the opening of the inner box is lower than the upper edge of the opening of the outer box. The bottom of the inner box is connected to a flux delivery pipe, and the bottom of the outer box is connected to a flux return pipe. The solder pot has a solder holding tank and a dross discharge port. The solder holding tank is located near the tooling flipping mechanism, the dross discharge port is located near the solder scraping mechanism, and a dross collection box is located directly below the dross discharge port. The solder scraping mechanism includes a fifth mounting bracket, on which a solder scraping mounting seat driven by a solder scraping cylinder is slidably mounted along the Y-axis direction. A solder scraping rod mounting block is hingedly mounted on the solder scraping mounting seat, and a solder scraping rod is fixedly mounted on the solder scraping rod mounting block. The solder scraping rod is located above the solder pot, and the end of the solder scraping rod near the solder pot has a solder scraping part. The wire harness welding device includes a connector feeding mechanism, a feeding and dispensing mechanism, and a solder melting and welding mechanism. The connector feeding mechanism is located upstream of the feeding and dispensing mechanism, and the solder melting and welding mechanism is located above the wire harness welding position. The wire harness unloading device is located above the tooling transfer device, and a finished product storage box is fixedly installed at the unloading end of the frame. A tooling transfer clearance opening is also provided between the unloading end of the frame and the wire harness unloading device and the tooling transfer device.

2. The automatic USB wire harness welding equipment according to claim 1, characterized in that, The upper tooling conveyor line also includes a tooling feeding conveyor mechanism and a tooling shifting mechanism. The tooling guide sliding mechanism and the tooling shifting mechanism are located downstream of the tooling feeding conveyor mechanism, and one end of the tooling guide sliding mechanism is connected to the unloading end of the tooling feeding conveyor mechanism. The wire sequence detection device, the core wire straightening device, the zero-cutting and cap-stripping device, the core wire tinning device, the wire harness welding device, and the wire harness unloading device are all located on one side of the tooling guide sliding mechanism and are arranged sequentially along the conveying direction of the circulating tooling. The tooling guide sliding mechanism is provided with a plurality of circulating toolings, and the tooling shifting mechanism is used to perform unidirectional stepping shifting of each of the circulating toolings on the tooling guide sliding mechanism. The lower tooling conveyor line includes a tooling return conveyor mechanism, and the tooling transfer device is located at the loading end of the tooling return conveyor mechanism, and the tooling transfer device is correspondingly set with the tooling transfer avoidance port.

3. The automatic USB wire harness welding equipment according to claim 2, characterized in that, The transfer fixture includes a transfer base, a wire guide plate is fixedly installed at one end of the transfer base, a wire clamping assembly is provided at the other end of the transfer base, and a wire support part is provided between the wire clamping assembly and the wire guide plate; The wire clamping assembly includes a fixed wire clamping block, a floating wire clamping block, and a first compression spring. The fixed wire clamping block is fixedly installed on the transfer base, and a first wire clamping groove adapted to the outer diameter of the wire body is opened on one side of the top of the fixed wire clamping block. The floating wire clamping block is hingedly installed on the transfer base, and a second wire clamping groove adapted to the outer diameter of the wire body is opened on the side of the floating wire clamping block facing the fixed wire clamping block. The second wire clamping groove is correspondingly arranged with the first wire clamping groove. The first compression spring is located between the floating wire clamping block and the transfer base, and under the action of the first compression spring, the floating wire clamping block is set against the fixed wire clamping block.

4. The automatic USB wire harness welding equipment according to claim 3, characterized in that, The transfer base is slidably installed between the first guide rail and the second guide rail. The first guide rail has two sections along its length, and the core wire soldering device is located between the two sections of the first guide rail. The tooling feeding mechanism includes a fixed slide fixedly installed on the frame. A linear guide rail driven by a tooling feeding cylinder is slidably installed on the fixed slide along the X-axis direction. A plurality of guide rail follower seats are fixedly installed on the linear guide rail along its length direction. Each guide rail follower seat is provided with a tooling feeding component. The tooling feeding components are all located between the first guide rail and the second guide rail. The tooling feeding assembly includes a tooling mounting base, a tooling tool, and a second compression spring. The tooling mounting base is fixedly mounted on the guide rail follower seat. One end of the tooling tool is hinged to the tooling mounting base, and the other end of the tooling tool is provided with an integrally formed tooling feeding part. The tooling feeding part has an inclined downward pressure guide surface. The second compression spring is located between the tooling tool and the tooling mounting base, and both ends of the second compression spring are respectively connected to the tooling feeding part and the tooling mounting base.

5. The automatic USB wire harness welding equipment according to claim 4, characterized in that, The tooling stop mechanism includes a first mounting bracket fixedly installed on the frame. A front stop cylinder and a rear stop cylinder are sequentially arranged on the first mounting bracket along the conveying direction of the transfer tooling. Both the front stop cylinder and the rear stop cylinder are fixedly installed on the first mounting bracket along the Z-axis direction. A front stop block is fixedly installed at the piston rod end of the front stop cylinder, and a rear stop block is fixedly installed at the piston rod end of the rear stop cylinder. The line sequence detection mechanism includes a vertical plate fixedly installed on the first mounting bracket. A camera mounting plate is fixedly installed on the top of the vertical plate. A detection camera and a light source are fixedly installed on the camera mounting plate. A lens is installed on the detection camera, and the light source is located directly below the lens.

6. The automatic USB wire harness welding equipment according to claim 5, characterized in that, The wire pulling drive mechanism includes a second mounting bracket fixedly mounted on the frame, a first sliding bracket driven by a wire pulling cylinder slidably mounted on the second mounting bracket along the Y-axis direction, a wire clamping cylinder fixedly mounted on the first sliding bracket along the Z-axis direction, a wire pulling knife holder fixedly mounted on the slide block of the wire clamping cylinder, two wire pulling knives are provided, and the two wire pulling knives are fixedly mounted on the wire pulling knife holder respectively; The wire stripping drive mechanism includes a third mounting bracket fixedly installed on the frame. A cap-stripping electric cylinder is fixedly installed on the third mounting bracket along the Y-axis direction. A second sliding bracket is fixedly connected to the slide of the cap-stripping electric cylinder. A wire stripping knife holder driven by a cap-stripping motor is slidably installed on the second sliding bracket along the Z-axis direction. Two wire stripping knife holders are provided accordingly. The wire stripping knife is fixedly installed on each of the two wire stripping knife holders. Under the drive of the cap-stripping motor, the two wire stripping knives slide towards each other / away from each other. A wire cap receiving box is also fixedly installed on the second sliding bracket. The wire cap receiving box is located on the side of the wire stripper away from the tooling guide sliding mechanism, and the wire cap receiving box is located between the two wire strippers. The end of the wire cap receiving box near the wire stripper has a core wire insertion port, and the bottom of the wire cap receiving box is connected to a wire cap conveying pipe.

7. The automatic USB wire harness welding equipment according to claim 6, characterized in that, The connector feeding mechanism includes a vibratory feeder and a linear feeder. The linear feeder is located between the vibratory feeder and the material feeding mechanism, and one end of the linear feeder is connected to the discharge end of the vibratory feeder. The material feeding mechanism includes a sixth mounting bracket fixedly installed on the frame. Along the Y-axis, the sixth mounting bracket is sequentially provided with a pushing component, a distributing component, and a receiving component. The distributing component is located between the pushing component and the receiving component, and the receiving component is positioned close to the tooling guide sliding mechanism. The material distribution unit includes a material conveying guide seat fixedly installed on the sixth mounting bracket. The material conveying guide seat has a material conveying channel for sliding guidance of the connector. A material inlet connected to the material conveying channel is opened on one side of the material conveying guide seat. The other end of the linear feeder is connected to the material inlet of the material conveying guide seat. A material blocking block driven by a material blocking cylinder is also slidably installed above the material conveying guide seat along the Z-axis direction. The material blocking block is correspondingly arranged with respect to the material inlet. The pushing assembly includes a push rod that is slidably mounted on the sixth mounting bracket along the Y-axis and driven by a pushing cylinder. The push rod is correspondingly arranged with the conveying channel, and one end of the push rod near the conveying guide seat extends into the conveying channel. The receiving unit includes a receiving lifting cylinder fixedly mounted on the sixth mounting bracket along the Z-axis direction. A lifting receiving seat is fixedly mounted on the slide of the receiving lifting cylinder. The lifting receiving seat has a receiving groove, which includes a receiving guide section and a welding positioning section. The receiving guide section is located close to the feeding guide seat. The lifting receiving seat is provided with a positioning component for connector welding positioning, an optical fiber sensor for connector positioning detection, and a solder feeding guide for guiding and feeding solder wire at the corresponding position of the welding positioning section. When in the receiving state, the receiving groove corresponds to the feeding channel. The solder melting and welding mechanism includes a seventh mounting bracket fixedly installed on the frame. A third sliding bracket driven by a core wire positioning cylinder is slidably installed on the seventh mounting bracket along the Z-axis direction. A core wire positioning plate is fixedly installed on the third sliding bracket. A welding gun driven by a welding gun driving cylinder is also slidably installed on the third sliding bracket along the Z-axis direction.

8. The automatic USB wire harness welding equipment according to claim 7, characterized in that, A solder pad support plate driven by a solder pad support cylinder is slidably installed on the lifting receiving seat along the Z-axis direction. The solder pad support plate is correspondingly arranged with the receiving groove, and the solder pad support plate is located at the end of the welding positioning section. The positioning component includes a ball-head plunger and an upper limit stop. The ball-head plunger is embedded in the lifting receiving seat, and the positioning ball head of the ball-head plunger extends into the welding positioning section of the receiving groove. The upper limit stop is slidably mounted on the lifting receiving seat along the X-axis and is driven by a gripper cylinder. The upper limit stop has an integrally formed pressing and limiting part. When in the welding state, the pressing and limiting part of the upper limit stop is located above the welding positioning section of the receiving groove. An optical fiber sensor for detecting connector positioning is fixedly installed on the lifting receiving seat. The optical fiber sensor is located in the welding positioning section of the receiving groove. The lifting receiving seat is also fixedly installed with a solder feeding conduit for guiding and conveying solder wire, and the outlet of the solder feeding conduit is close to the end of the welding positioning section of the receiving groove. The lifting receiving seat has an air blowing hole at the bottom of the receiving groove that communicates with the air supply device. The air blowing hole is located in the welding positioning section of the receiving groove.

9. The automatic USB wire harness welding equipment according to claim 8, characterized in that, The wire harness unloading device includes an eighth mounting bracket fixedly installed on the frame. An unloading translation cylinder is fixedly installed on the eighth mounting bracket along the X-axis direction. A fourth sliding bracket is fixedly installed on the slide of the unloading translation cylinder. An unloading lifting cylinder is fixedly installed on the fourth sliding bracket along the Z-axis direction. A wire harness gripping cylinder is fixedly installed on the slide of the unloading lifting cylinder. A wire harness picking and placing gripper is fixedly installed on the gripper of the wire harness gripping cylinder. The tooling transfer device includes a tooling transfer cylinder fixedly mounted on the frame along the Z-axis direction. A tooling lifting pallet is fixedly mounted on the piston rod end of the tooling transfer cylinder. A tooling pushing cylinder is fixedly mounted on the tooling lifting pallet along the X-axis direction. A transverse top block is fixedly mounted on the piston rod end of the tooling pushing cylinder. A wire clamping block pressing cylinder is also provided on the tooling lifting pallet. The wire clamping block pressing cylinder is fixedly mounted on the tooling lifting pallet along the Z-axis direction, and a wire clamping block pressing plate is fixedly mounted on the slide of the wire clamping block pressing cylinder.

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