Wire color sequence sorting and welding terminal accurate alignment production line based on machine vision

Abstract

The wire rod color sequence sorting and welding terminal precise alignment production line based on machine vision comprises a transplanting module, a PCBA feeding table and a discharging module are arranged at the two ends of the transplanting module respectively, a manual feeding module is arranged on one side of the PCBA feeding table, a plurality of welding machines are symmetrically distributed on the two sides of the transplanting module, a protective cover is arranged around the transplanting module, and the PCBA feeding table and the discharging module are arranged on the periphery of the transplanting module. The transplanting module comprises a wire circulating line, a PCBA feeding circulating line, a plurality of wire feeding mechanisms and a PCBA grabbing mechanism, the welding machine comprises a wire taking module, wire color separating modules are arranged on the two sides of the wire taking module, a transfer module is arranged at the rear ends of the wire color separating modules, and a wire pulling module, a wire end arranging module, a wire welding module and a PCBA jig table are sequentially arranged on the side, away from the wire taking module, of the transfer module. The wire rod color sequence sorting device has the beneficial effects that high precision of wire rod color sequence sorting and precise alignment of welding terminals are achieved through cooperation of machine vision detection and recognition and the multi-axis module, and the automation level and the product yield of a production line are remarkably improved.

Description

Technical Field

[0001] The present invention mainly relates to the field of wire welding technology, and specifically to a production line for wire color sequence sorting and precise alignment of welding terminals based on machine vision. Background Art

[0002] In traditional wire welding production, wire color sorting mainly relies on manual color comparison one by one. The operation is time-consuming and easily leads to wire sequence confusion due to visual fatigue, resulting in misjudgment, which directly affects the matching of subsequent welding terminals and PCBA boards. During welding, the alignment of wire terminals and PCBA boards is mostly achieved by mechanical clamps. Hard positioning cannot compensate for errors such as wire bending and slight deformation of terminals. Problems such as terminal insertion deviation or cold soldering often occur, and the welding yield of precision electronic equipment is low.

[0003] The demand for precision wire welding in fields such as 5G communications and smart terminals is increasing day by day. The traditional production model of manual wire splitting and mechanical positioning can no longer meet the precision manufacturing requirements of zero color sequence misalignment and zero alignment deviation. The mechanical wire splitting device used in the traditional production line can only handle simple wire harnesses of 3-5 cores. When faced with complex wire sequences of more than 10 cores, due to the lack of color sequence recognition ability, manual intervention is often required. The mechanical positioning mechanism of the welding station relies on fixed fixtures and cannot adapt to the slight deformation of the wire caused by wire tension and ambient temperature changes, resulting in alignment deviation between the terminal and the hole.

[0004] It should be noted that the above content belongs to the technical knowledge scope of the inventor. Since the technical content in this field is vast and too complicated, the above content of this application does not necessarily constitute prior art. Summary of the Invention

[0005] 1. Technical problem to be solved by the invention: The present invention provides a machine vision-based wire color sequence sorting and welding terminal precise alignment production line to solve the technical problems existing in the above-mentioned background technology.

[0006] 2. Technical solution: To achieve the above-mentioned objectives, the present invention provides a technical solution: a wire color sequence sorting and welding terminal precise alignment production line based on machine vision, comprising a transplanting module, wherein a PCBA loading platform and a unloading module are respectively provided at both ends of the transplanting module, a manual loading module is provided on one side of the PCBA loading platform, multiple welders are symmetrically distributed on both sides of the transplanting module, and a protective cover is provided around the transplanting module, wherein the transplanting module comprises a wire circulation line and a PCBA loading circulation line, multiple groups of wire feeding mechanisms are equidistantly provided on the wire circulation line, and PCBA gripping mechanisms are provided at both ends of the PCBA loading circulation line, the welder comprises a wire taking module connected to the wire feeding mechanism, wire color separation modules are provided on both sides of the wire taking module, a transfer module is provided at the rear end of the wire color separation module, a wire pulling module, a wire head module, a welding wire module and a PCBA fixture table are sequentially provided on the side of the transfer module away from the wire taking module, and the PCBA fixture table is connected to the PCBA gripping mechanism.

[0007] Furthermore, the wire taking module includes a first Y-axis linear module, the first Y-axis linear module is provided with a wire taking end, the wire taking end includes two wire taking clamps arranged up and down, one side of the two wire taking clamps is connected to a lifting cylinder, one side of the first Y-axis linear module is also provided with a wire clamping clamp, one side of the wire clamping clamp is also provided with a wire managing camera, and the wire clamping clamp is coaxially arranged with the wire taking clamp.

[0008] Furthermore, the line color module includes two line splitting clamps arranged opposite to each other, the line splitting ends of the line splitting clamps are provided with line pressing plates, and there is a certain gap between the two line pressing plates and they are staggered.

[0009] Furthermore, the transfer module includes an X-axis linear module, a Z-axis linear module and a wire clamping mechanism, the wire clamping mechanism includes a parallel cylinder, the telescopic end of the parallel cylinder is connected to a wire clamping plate and a wire management plate, and the wire management plate is provided with multiple L-shaped spring strips.

[0010] Furthermore, the wire pulling module includes relatively arranged wire pulling clamps and a wire pressing mechanism, a lifting back plate assembly is provided on one side of the wire pressing mechanism, and a wire management camera 2 is also provided at the front end of the lifting back plate assembly.

[0011] Furthermore, the PCBA fixture table includes a second Y-axis linear module and a PCBA carrier plate, and the PCBA carrier plate is located directly below the wire bonding module.

[0012] Furthermore, multiple groups of the wire feeding mechanisms are connected to the wire circulation line through positioning sliders, and the wire feeding mechanisms include a T-shaped positioning plate, and a wiring clamp is provided at the end of the T-shaped positioning plate.

[0013] Furthermore, a wiring pushing mechanism is fixedly provided on the wire circulation line at a position close to the manual feeding module, and the wiring pushing mechanism is provided corresponding to the wire feeding mechanism.

[0014] Furthermore, the PCBA feeding circulation line is erected above the wire circulation line, and the PCBA feeding circulation line includes two parallel linear rails, and the two PCBA grabbing mechanisms are arranged at both ends of the linear rails and are slidably connected thereto. The PCBA feeding table is located at one end of the PCBA feeding circulation line, and the PCBA grabbing mechanism is docked above it.

[0015] Furthermore, the PCBA loading platform includes a loading chute and a transfer chute arranged in a T shape, a suction cup handling assembly is provided at the docking position between the loading chute and the transfer chute, and the transfer chute corresponds to the PCBA grabbing mechanism.

[0016] 3.Beneficial effects: Compared with the prior art, the technical solution provided by the present invention has the following beneficial effects: 1. Precise and controllable wire color separation function: The wire color separation module can accurately separate core wires according to the visually recognized color sequence through the coordination of the staggered wire crimping plug-in plate and the wire management camera. The wire separation accuracy is high, which solves the problem of wrong sequence of manual wire separation and provides a reliable wire sequence foundation for precision welding. 2. Vision-guided precision welding: The wire drawing module and the wire assembly module adjust the core wire shape based on the 3D height data of the wire management camera 2. Cooperating with the Y-axis linear module of the PCBA fixture for dynamic alignment, the terminals and PCBA holes are precisely aligned, improving the welding yield of precision products. 3. Double improvement in production efficiency and consistency: The full process of automated line division, alignment and welding effectively improves efficiency compared to traditional production lines, and the line sequence and welding quality are highly consistent, meeting the large-scale production needs in the precision field.

[0017] It should be noted that the structures not introduced in the present invention are the same as those in the prior art or can be implemented by using the prior art, and are not described in detail here because they do not involve the design points and improvement directions of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the transplanting module structure of the present invention; Figure 3 It is a schematic diagram of the partial structure of the transplanting module of the present invention; Figure 4 Schematic diagram of the wire feeding mechanism structure of the present invention Figure 5This is a schematic diagram of the PCBA loading platform structure of the present invention; Figure 6 It is a structural schematic diagram of the welding machine of the present invention; Figure 7 It is a schematic diagram of the internal structure of the welding machine of the present invention; Figure 8 This is a schematic structural diagram of the line taking module of the present invention; Figure 9 This is a schematic diagram of the structure of the line color module of the present invention; Figure 10 This is a schematic diagram of the transfer module structure of the present invention; Figure 11 It is a partially enlarged schematic diagram of the transfer module structure of the present invention; Figure 12 This is a schematic structural diagram of the wire drawing module of the present invention; Figure 13 It is a structural schematic diagram of the PCBA fixture table of the present invention.

[0019] Reference numerals: 1. Transplanting module; 11. Wire circulation line; 12. PCBA feeding circulation line; 13. Wire feeding mechanism; 131. T-shaped positioning plate; 132. Wiring clamp; 14. PCBA grabbing mechanism; 15. Wiring pushing mechanism; 2. PCBA loading platform; 21. Loading slide; 22. Transfer slide; 23. Suction cup handling assembly; 3. Unloading module; 4. Manual feeding module; 5. Welding machine; 51. Wire taking module; 511. First Y-axis linear module; 512. Wire taking end; 5121. Wire taking clamp; 5122. Lifting cylinder; 513. Wire clamp; 52. Wire color separation module; 521 , wire distribution clamp; 522, wire pressing plug-in plate; 53, transfer module; 531, X-axis linear module; 532, Z-axis linear module; 533, wire clamping mechanism; 5331, parallel cylinder; 5332, wire clamping plate; 5333, wire management plate; 5334, L-shaped spring pressure strip; 54, wire pulling module; 541, wire pulling clamp; 542, wire pressing mechanism; 543, lifting back plate assembly; 55, wire head module; 56, wire welding module; 57, PCBA fixture table; 571, second Y-axis linear module; 572, PCBA carrier plate; 58, wire management camera 1; 59, wire management camera 2; 6, protective cover. DETAILED DESCRIPTION

[0020] To facilitate understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "page", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0023] In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," "fixed," "provided with," "provided on," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integral connection; they may refer to mechanical connection or electrical connection; they may refer to direct connection or indirect connection through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances. Example

[0024] Refer to the attached Figure 1-13 , the core of the machine vision-based wire color sorting and welding terminal precision alignment production line is the transfer module 1 as the central hub, with the left and right ends rigidly connected to the PCBA loading platform 2 (for the initial loading of PCBA boards) and the unloading module 3 (for the output of finished products after welding). The side of the PCBA loading platform 2 is fixedly installed with a manual loading module 4 through a bracket. The manual loading module 4 is a rotary table structure for operators to manually place the wire harness to be processed, forming a composite loading mode of "automatic + PCBA loading + manual assisted wire harness loading". At least 8 welding machines 5 are symmetrically distributed on the left and right sides of the transfer module 1 along its length (the specific number is configured according to production capacity requirements). Each welding machine 5 is fixed to the side of the transfer module 1 to ensure that the welding station is precisely aligned with the conveying path. The periphery of the transfer module 1 is enclosed by a metal frame to form a protective cover 6, which not only prevents external dust from polluting the welding environment, but also avoids safety hazards to operators caused by high-speed motion modules.

[0025] The transplanting module 1 adopts an upper and lower double-layer circulation line structure. The lower layer is the wire circulation line 11, which adopts synchronous belt or chain drive. Positioning grooves are equidistantly provided on the surface of the line body for conveying the wire harness to be processed. The upper layer is the PCBA loading circulation line 12, which is parallel to the wire circulation line 11 and has a certain height difference to avoid interference. It is used to convey the PCBA board to be welded. Several groups of wire feeding mechanisms 13 are equidistantly installed on the belt surface of the wire circulation line 11 through positioning sliders. Two PCBA grasping mechanisms 14 are set at each end of the PCBA loading circulation line 12. The PCBA grasping mechanism 14 consists of a vacuum suction cup and a multi-axis robotic arm, which is used to transfer the PCBA board from the PCBA loading table 2 to the circulation line, and convey it to the front end of each welding machine 5 at each workstation.

[0026] Inside each welding machine 5, arranged in sequence along the wire conveying direction are a wire taking module 51 (which directly connects to the wiring clamp 132 of the wire feeding mechanism 13 to take the wire), a wire color separation module 52 (used to separate the core wires according to the wire sequence), a transfer module 53 (which receives the wires after separation and transfers them to the subsequent workstations), a wire pulling module 54 (which adjusts the core wire height), a wire head straightening module 55 (which corrects the shape of the core wire head), a wire welding module 56 (which performs the welding operation) and a PCBA jig table 57 (which carries the PCBA board to be welded). The PCBA jig table 57 is connected to the PCBA grabbing mechanism 14 through a guide rail to ensure accurate reception of the PCBA board and precise alignment of the wire terminals.

[0027] The wire-taking module 51 includes a first Y-axis linear module 511, and a wire-taking end 512 is fixedly installed on the module slide. The wire-taking end 512 includes two sets of wire-taking clamps 5121 arranged vertically. The opening direction of the clamps is perpendicular to the wire feeding direction. The clamping force can be adjusted by air pressure. The spacing between the two sets of clamps is consistent with the height of the wiring clamps 132 of the wire feeding mechanism 13, ensuring that the wire can be stably clamped when taking the wire. The lifting cylinder 5122 is fixed to the side of the wire-taking clamp 5121 through a connecting plate for fine-tuning the clamp height to adapt to wires of different wire diameters; a wire clamping clamp 513 is also provided on the side of the first Y-axis linear module 511. The wire clamping clamp 513 is coaxial with the wire-taking clamp 5121 and is used to adjust the fixed wire height after taking the wire. A wire management camera 58 is installed on the side of the wire clamping claw 513 through a bracket. The wire management camera adopts a combination of an industrial CCD camera and a ring light source. Its lens is facing the clamping area of ​​the wire clamping claw 513, which is used to capture the color distribution image of the wire and transmit it to the control system as the basis for the wire color separation module 52 to separate the wires; when the wire circulation line 11 transports the wire feeding mechanism 13 to the corresponding workstation of the welding machine 5, the first Y-axis linear module 511 drives the wire taking end 512 to move above the wire, and the lifting cylinder 5122 descends to make the wire taking claw 5121 close and clamp the wire, and then the wire clamping claw 513 synchronously closes and fixes the middle section of the wire, and the wire taking end immediately takes a picture to identify the wire sequence through the wire management camera 58, completing the wire taking and wire sequence identification.

[0028] The wire color separation module 52 is the core unit for realizing "color sequence sorting". It is composed of two groups of wire separation jaws 521 arranged opposite to each other. The wire separation end of each group of jaws is integrated with a wire pressing plug-in plate 522. A gap width matching the target core wire diameter is reserved between the two wire pressing plug-ins 522, and they are staggered left and right. The core wires are squeezed and pushed by the wire pressing plug-in plate 522 to separate each core wire; after the wire taking module 51 moves the wire to the wire separation area of ​​the wire color separation module 52, the two groups of wire separation jaws 521 are closed toward the center, and the wire pressing plug-in plate 522 is inserted into the core wire gap of the wire; due to the staggered setting of the plug-in plate, core wires of different colors will be pushed out by the plug-in plate and forked at different angles, thereby realizing the function of separating the core wires by color sequence, avoiding the cross-over and overlap of the core wires, and ensuring that the subsequent transfer module 53 can accurately clamp the core wires of the corresponding wire sequence.

[0029] The transfer module 53 plays the role of transporting the wire between the various workstations in the welding machine 5. It consists of an X-axis linear module 531, a Z-axis linear module 532 and a wire clamping mechanism 533. The X-axis linear module 531 moves along the wire conveying direction, and its stroke covers the distance from the wire pulling module 54 to the wire welding module 56. The wire clamping mechanism 533 includes a parallel cylinder 5331, whose telescopic end is connected to the wire clamping plate 5332 and the wire management plate 5333 (parallel to the wire clamping plate, with adjustable spacing). The surface of the wire clamping plate 5332 is provided with multiple wire grooves corresponding to the number of core wires for fixing the wire body. The inner side of the wire management plate 5333 is embedded with multiple L-shaped spring pressure strips 5334. The horizontal section is pressed on one side of the core wire, fixing the core wire in the wire groove of the wire clamping plate 5332, forming a flexible clamping structure; after the wire division is completed, the X-axis linear module 531 of the transfer module 53 drives the wire clamping mechanism 533 to move to the wire taking module 51 area, and the Z-axis linear module 532 descends to make the wire clamping plate 5332 fit the wire body, and the parallel cylinder 5331 contracts to drive the wire management plate 5333 to close to the wire clamping plate 5332, and the L-shaped spring pressure strip 5334 applies uniform pressure to the core wire, transferring the wire with the divided wire sequence from the wire taking clamp 5121, and then the transfer module 53 transfers the wire to the subsequent workstations such as the wire pulling module 54 and the wire head module 55 in sequence.

[0030] The wire pulling module 54 is used to accurately adjust the core wire height to ensure that the core wire matches the terminal hole depth of the PCBA board during welding. It is relatively set by the wire pulling clamp 541 and the wire pressing mechanism 542. The lifting back plate assembly 543 is installed on the side of the wire pressing mechanism 542. The front end of the lifting back plate assembly 543 is installed with a wire management camera 2 59 through a bracket to measure the core wire height deviation; the transfer module 53 transfers the wire to the wire management camera 2 59 to perform 3D scanning on the core wire, identify the height deviation of each core wire, and then transfer the wire to the wire pulling module 54 position The wire pulling clamp 541 is placed above the core wire, and the wire pressing mechanism 542 moves to the front end of the L-shaped spring pressure strip 5334. By moving backward, the vertical end of the L-shaped spring pressure strip 5334 is pressed, and the horizontal end of the L-shaped spring pressure strip 5334 is tilted upward, thereby releasing one of the core wires. The released core wire is then clamped by the wire pulling clamp 541, and the core wire is pulled up and down to be stretched to the standard height. In this process, the core wires are adjusted one by one to ensure that the height of all core wires is consistent, thereby avoiding failure to insert into the terminal hole due to height deviation.

[0031] The PCBA fixture table 57 consists of a second Y-axis linear module 571 and a PCBA carrier plate 572. The moving track of the second Y-axis linear module 571 covers the welding area. The PCBA carrier plate 572 is fixed to the slide of the second Y-axis linear module 571 by bolts and is located directly below the wire welding module 56 to ensure that the welding head can contact the terminal; after the PCBA grasping mechanism 14 transfers the PCBA board from the PCBA loading circulation line 12 to the PCBA carrier plate 572, the vacuum adsorption hole is activated to fix the PCBA board; the second Y-axis linear module 571 drives the carrier plate to move directly below the wire welding module 56. At this time, the wire has been transported from the transfer module 53 to the bottom of the wire welding module 56. After calibration by the visual positioning system in the welding machine 5, the core wire head and the terminal hole of the PCBA board are accurately aligned to complete the final positioning before welding.

[0032] The wire feeding mechanism 13 is the "carrier" of the wire circulation line 11. It is connected to the wire circulation line 11 through a positioning slider to ensure that the wire moves to the work station of the welding machine 5. The main body of the wire feeding mechanism 13 is a T-shaped positioning plate 131, and its end extends toward the welding machine 5 and is equipped with a wiring clamp 132 for clamping and conveying the wire; the manual feeding module 4 rotates to connect the wire harness with the wiring clamp 132 of the wire feeding mechanism 13, and the wiring clamp 132 closes to clamp the wire, and the wire circulation line 11 is started to convey the wire to the corresponding work station of the wire taking module 51 of each welding machine 5 in turn, realizing cyclic and equidistant feeding.

[0033] The wiring pushing mechanism 15 is used as a connection device between the manual online module 4 and the wire feeding mechanism 13. It is fixed on the wire circulation line 11 near the manual online module 4 and is the loading starting point of the circulation line. Its driving direction is consistent with the opening direction of the wiring clamp 132 of the wire feeding mechanism 13, and the output end of the pushing mechanism 15 is aligned with the clamping area of ​​the wiring clamp 132; when the operator places the wire harness on the loading position of the manual online module 4, the cylinder of the wiring pushing mechanism 15 is started, and the push block pushes the wire feeding mechanism 13 forward, pushing the opening of the wiring clamp 132 toward the wire. After the clamp closes and clamps the wire, the pushing mechanism 15 is reset to complete the connection between manual feeding and automatic clamping, thereby avoiding wire retrieval failure due to manual placement position deviation.

[0034] The PCBA loading circulation line 12 is set above the wire circulation line 11 and consists of two parallel linear rails. The two ends of the linear rails are fixed to the frame of the transplanting module 1 through brackets. The two PCBA grasping mechanisms 14 can move back and forth along the rails to realize multi-station transportation of PCBA boards and unloading and grasping after welding is completed; after the PCBA loading table 2 conveys the PCBA board to one end of the circulation line, the PCBA grasping mechanism 14 at this end absorbs the PCBA board through the vacuum suction cup, and can absorb multiple PCBA boards at a time, and then moves along the rail to the top of the PCBA fixture table 57 of the first welder 5. The corresponding welder 5 releases the PCBA boards one by one and then returns to the loading position to ensure that there is no shortage of materials at the welding station of each welder 5. The grasping mechanism 14 at the other end moves synchronously in the opposite direction to convey the PCBA board after welding to the unloading module 3 to ensure timely unloading.

[0035] The PCBA loading platform 2 adopts a T-shaped loading slide 21 and a transfer slide 22. The loading slide 21 is connected to the external conveyor line and transports the PCBA board in the horizontal direction. The transfer slide 22 is a bidirectional conveying slide, corresponding to the PCBA grabbing mechanism 14 at both ends. A suction cup conveying component 23 is set at the docking point of the two (i.e., the T-shaped intersection). After multiple PCBA boards are loaded on the tray and transported to the loading slide 21, the suction cup conveying component 23 adsorbs the entire tray and transports it to the transfer slide 22. The tray moves to both ends on the transfer slide 22. The external conveyor line conveys the PCBA board to the loading slide 21, and the slide is driven by a belt to convey the PCBA board to the T-shaped intersection. The suction cup of the suction cup handling assembly 23 descends to adsorb the PCBA board, and the linear module drives it to move horizontally to the transfer slide 22. Then the belt of the transfer slide 22 is started to convey the PCBA board to the grabbing position. The PCBA grabbing mechanism 14 descends to adsorb the PCBA board and conveys it to the welding machine 5 along the circulation line, completing the full process of automatic loading from external loading to the welding machine station.

[0036] The overall operation process steps of the production line are as follows: PCBA loading: external conveyor line → PCBA loading platform 2 (loading slide 21 → suction cup handling assembly 23 → transfer slide 22) → PCBA grabbing mechanism 14 → PCBA loading circulation line 12 → PCBA fixture table 57 of each welding machine 5; Wire harness loading: manual wire feeding module 4 → wiring pushing mechanism 15 → wire feeding mechanism 13 → wire circulation line 11 → wire taking module 51 of each welding machine 5; Welding machine operation: wire taking module 51 (wire management camera 58 identifies wire sequence) → wire color separation module 52 (wire pressing plate 522 separates wires) → transfer module 53 (wire clamping mechanism 533 transfers wires) → wire pulling module 54 (wire management camera 59 detects and adjusts core wire height) → wire head straightening module 55 (corrects core wire head shape) → wire welding module 56 (welding after visual alignment) → unloading module 3 (outputs finished product).

[0037] In summary, this production line achieves high-precision wire color sorting and precise alignment of welding terminals through the collaboration of machine vision detection and recognition and multi-axis modules, significantly improving the automation level of the production line and product yield.

[0038] The above-mentioned embodiments only express a certain implementation method of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the patent scope of the present invention. It should be pointed out that for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent of the present invention shall be based on the attached claims.

Claims

1. A machine vision-based production line for wire color sorting and precise solder terminal alignment, featuring: The invention comprises a transplanting module (1), wherein a PCBA loading platform (2) and a unloading module (3) are respectively provided at both ends of the transplanting module (1), a manual loading module (4) is provided on one side of the PCBA loading platform (2), a plurality of welding machines (5) are symmetrically distributed on both sides of the transplanting module (1), and a protective cover (6) is provided around the transplanting module (1), wherein the transplanting module (1) comprises a wire circulation line (11) and a PCBA loading circulation line (12), a plurality of wire loading mechanisms (13) are provided on the wire circulation line (11) at equal distances, and the PCBA loading circulation line (12) is provided with a plurality of wire loading mechanisms (13) at equal distances. Both ends are provided with PCBA grabbing mechanisms (14), the welding machine (5) includes a wire taking module (51) connected to the wire feeding mechanism (13), both sides of the wire taking module (51) are provided with wire color separation modules (52), the rear end of the wire color separation module (52) is provided with a transfer module (53), the side of the transfer module away from the wire taking module (51) is provided with a wire pulling module (54), a wire head module (55), a welding wire module (56) and a PCBA fixture table (57) in sequence, and the PCBA fixture table (57) is connected to the PCBA grabbing mechanism (14).

2. The machine vision-based wire color sorting and welding terminal precision alignment production line according to claim 1 is characterized by: The wire taking module (51) includes a first Y-axis linear module (511), the first Y-axis linear module (511) is provided with a wire taking end (512), the wire taking end (512) includes two wire taking clamps (5121) arranged vertically, one side of the two wire taking clamps (5121) is connected to a lifting cylinder (5122), one side of the first Y-axis linear module (511) is further provided with a wire clamping clamp (513), one side of the wire clamping clamp (513) is further provided with a wire managing camera (58), and the wire clamping clamp (513) is coaxially arranged with the wire taking clamp (5121).

3. The machine vision-based wire color sorting and welding terminal precision alignment production line according to claim 1 is characterized by: The line color module (52) comprises two line-splitting clamps (521) arranged opposite to each other, the line-splitting ends of the line-splitting clamps (521) are provided with line-pressing plug-ins (522), and a certain gap is provided between the two line-pressing plug-ins (522) and the two line-pressing plug-ins (522) are arranged in a staggered manner.

4. The machine vision-based wire color sorting and welding terminal precision alignment production line according to claim 1 is characterized by: The transfer module (53) comprises an X-axis linear module (531), a Z-axis linear module (532) and a wire clamping mechanism (533). The wire clamping mechanism (533) comprises a parallel cylinder (5331). The telescopic end of the parallel cylinder (5331) is connected to a wire clamping plate (5332) and a wire management plate (5333). The wire management plate (5333) is provided with a plurality of L-shaped spring strips (5334).

5. The machine vision-based wire color sorting and welding terminal precision alignment production line according to claim 1 is characterized by: The wire drawing module (54) comprises a wire drawing clamp (541) and a wire pressing mechanism (542) which are arranged opposite to each other. A lifting back plate assembly (543) is provided on one side of the wire pressing mechanism (542). A wire management camera (59) is also provided at the front end of the lifting back plate assembly (543).

6. The machine vision-based wire color sorting and welding terminal precision alignment production line according to claim 1 is characterized by: The PCBA fixture platform (57) comprises a second Y-axis linear module (571) and a PCBA carrier plate (572), and the PCBA carrier plate (572) is located directly below the wire bonding module (56).

7. The machine vision-based wire color sorting and welding terminal precision alignment production line according to claim 1 is characterized by: A plurality of wire feeding mechanisms (13) are connected to the wire circulation line (11) via positioning sliders. The wire feeding mechanisms (13) include a T-shaped positioning plate (131), and a wiring clamp (132) is provided at the end of the T-shaped positioning plate (131).

8. The machine vision-based wire color sorting and welding terminal precision alignment production line according to claim 1 is characterized by: A wiring pushing mechanism (15) is fixedly provided on the wire circulation line (11) at a position close to the manual wire feeding module (4), and the wiring pushing mechanism (15) is provided corresponding to the wire feeding mechanism (13).

9. The machine vision-based wire color sorting and welding terminal precision alignment production line according to claim 1 is characterized by: The PCBA feeding circulation line (12) is erected above the wire material circulation line (11), and the PCBA feeding circulation line (12) includes two parallel linear rails, and two PCBA grabbing mechanisms (14) are arranged at both ends of the linear rails and are slidably connected thereto. The PCBA feeding table (2) is located at one end of the PCBA feeding circulation line (12), and the PCBA grabbing mechanism (14) is docked above it.

10. The machine vision-based wire color sorting and welding terminal precise alignment production line according to claim 1 is characterized by: The PCBA loading platform (2) comprises a loading slide (21) and a transfer slide (22) arranged in a T-shape, a suction cup handling assembly (23) is provided at a docking position between the loading slide (21) and the transfer slide (22), and the transfer slide (22) corresponds to the PCBA grabbing mechanism (14).

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