Electronic circuit automatic welding processing production line

Abstract

The utility model discloses an automatic welding processing production line for an electronic circuit. The automatic welding processing production line comprises a machine table, a wire supply mechanism, a wire cutting and peeling mechanism, a movable welding platform, a feeding and discharging mechanism, a movable width adjusting module, a plurality of wire taking mechanisms and a plurality of welding mechanisms. The width adjusting driving mechanism is started to push the width adjusting plate to move downwards, so that the wire clamping mechanism or the welding mechanism is pushed in the Y-axis direction through the width adjusting strip hole, the distance between the adjacent wire taking mechanism or the adjacent welding mechanism is adjusted, and the requirement for the distance of a welding position during welding on a PCB is met. The movable width adjusting module is adopted to complete width adjusting work in the moving process of the wire taking mechanism and the welding mechanism, so that the wire welding distance requirements of different products are met, and it can be guaranteed that when the wire cutting and stripping mechanism supplies wires, the distance between adjacent wires does not need to be adjusted according to the welding position on a PCB in the feeding process.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic welding equipment for PCB products, in particular to an automatic welding processing production line for electronic circuits. Background Art

[0002] In the circuits used in electronic devices, different circuit boards and components need to be electrically connected through wires. Since the core wire of the wire is covered with insulating rubber, it is generally necessary to peel off a section of the rubber before welding, and tin the exposed core wire to ensure that the core wire is not loose during welding, and to ensure the welding quality between the wire and the electronic components.

[0003] In order to improve the efficiency of wire welding, the industry generally uses automatic wire stripping equipment to strip and tin the wires, and then sends the tinned wires to the welding station for welding. Since there may be many different specifications of wires to be welded on the same circuit board, or in order to distinguish the wires of different components, the core wires of the wires are covered with insulating rubbers of different colors. In the prior art, the wires provided by the automatic wire stripping equipment are fixed and cannot provide different wires according to different processes. If there is a need to weld different wires, it is necessary to use multiple wire stripping and feeding equipment to feed them separately, or use multiple automatic welding lines to weld different wires. The above methods require relatively high investment costs and require more space in the factory, which is very inconvenient.

[0004] In addition, when welding wires to components on PCB boards, there is a certain deviation in the positions where the welding wires need to be welded on PCB boards of different specifications and models. Therefore, it is generally necessary to adjust the working positions of the wire clamping mechanism and the welding mechanism according to the welding wire positions. If one wire is clamped separately for welding each time, the wire can be moved to the corresponding position for welding, but the wires on the PCB board need to be clamped and welded one by one, which is inefficient. If multiple sets of wire clamping mechanisms are used to clamp multiple wires at the same time, the distance between different wire clamping mechanisms may be fixed. Therefore, when welding wires on PCB boards of different specifications and sizes, the wire clamping mechanisms cannot be universal and need to be adjusted and tested accordingly. The operation is troublesome, and the installation, setting, and maintenance costs are relatively high.

[0005] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0006] The utility model aims to overcome the deficiencies of the prior art and provide an electronic circuit automatic welding processing production line.

[0007] The technical solution of the utility model is as follows: Provide an electronic circuit automatic welding processing production line, comprising: a machine platform, a wire supply mechanism arranged beside the machine platform, a wire cutting and stripping mechanism arranged on the machine platform, a mobile welding platform arranged on the machine platform, a loading and unloading mechanism arranged at both ends of the mobile welding platform, two sets of mobile width adjustment modules mounted above the mobile welding platform, a plurality of wire taking mechanisms arranged on the mobile width adjustment module on one side, and a plurality of welding mechanisms arranged on the mobile width adjustment module on the other side;

[0008] The mobile width adjustment module includes: a gantry bracket mounted above the mobile welding platform, a Y-axis mobile module arranged on the gantry bracket, a Z-axis mobile module arranged on the moving end of the Y-axis mobile module, a lifting plate arranged on the moving end of the Z-axis mobile module, a width adjustment driving mechanism arranged on the lifting plate, and a width adjustment plate connected to the output end of the width adjustment driving mechanism, a plurality of width adjustment strip holes are arranged on the width adjustment plate, and the width adjustment strip holes are arranged on the width adjustment plate at different inclination angles, and the wire taking mechanism and the welding mechanism are respectively movably arranged on the lifting plate and connected to the width adjustment strip holes.

[0009] Furthermore, the wire taking mechanism includes: an active adjustment plate movably connected to the width adjusting plate, a pneumatic clamp arranged on the active adjustment plate, a guide cylinder arranged on the pneumatic clamp, and a guide pressure jaw arranged on the output end of the guide cylinder, the end of the guide pressure jaw is provided with a V-shaped groove or a U-shaped groove, and an adjustment guide column is provided on the active adjustment plate, and the adjustment guide column is embedded in the width adjusting strip hole.

[0010] Further, the welding mechanism comprises: an active adjustment plate movably connected to the width adjustment plate, a welding gun head arranged on the active adjustment plate, an adjustment bracket arranged beside the welding gun head, and a welding wire guide head arranged on the adjustment bracket, wherein the welding wire guide head is movably penetrated with welding wire;

[0011] A plurality of welding wire coils and welding wire feeding modules are arranged on the side of the Z-axis moving module corresponding to the welding mechanism, and the welding wires of the welding wire coils pass through the welding wire feeding module and the welding wire guide head in sequence.

[0012] Furthermore, the wire cutting and stripping mechanism includes: a wire cutting frame arranged on the machine platform, a wire dividing mechanism arranged on the wire cutting frame, a cutting mechanism arranged at the rear end of the wire dividing mechanism, a traction mechanism and a wire clamping mechanism arranged at the rear end of the cutting mechanism, and the wire dividing mechanism includes: a wire dividing seat arranged on the wire cutting frame plate, a wire dividing drive mechanism arranged on the wire dividing seat, and a sliding wire organizing seat arranged on the output end of the wire dividing drive mechanism, and the wire dividing drive mechanism drives the sliding wire organizing seat to reciprocate in the Y-axis direction.

[0013] Furthermore, the wire dividing mechanism and the wire clamping mechanism are respectively connected to a tinning mechanism, and the tinning mechanism includes: a rotary drive motor arranged on the wire cutting frame, a belt transmission mechanism connected to the output end of the rotary drive motor, a turntable connected to the output end of the belt transmission mechanism, a movable module arranged on the turntable, a first dipping tank and a second dipping tank arranged below the wire dividing mechanism and / or the wire clamping mechanism, the wire dividing mechanism and the wire clamping mechanism are respectively arranged on the moving end of the movable module, the first dipping tank is filled with flux, and the second dipping tank is filled with tin liquid.

[0014] Further, the traction mechanism comprises: a traction movable module arranged beside the wire clamping mechanism, a traction seat arranged on the moving end of the traction movable module, a traction cylinder arranged on the traction seat, a guide sleeve sleeved on the outer side of the output end of the traction cylinder, and a wire clamping claw connected to the output end of the traction cylinder, the wire clamping claw is arranged at the front end of the guide sleeve, the rear end of the wire clamping claw is hinged to the output end of the traction cylinder, and the middle part of the wire clamping claw is hinged to the guide sleeve;

[0015] The wire clamping mechanism adopts pneumatic clamping claws.

[0016] Further, the cutting mechanism comprises: a cutting drive motor arranged on the cutting frame, a bidirectional lead screw connected to the output end of the cutting drive motor, a cutting sliding block respectively sleeved on both ends of the bidirectional lead screw, and a knife group arranged on the cutting sliding block, wherein the bidirectional lead screw is arranged along the Z direction;

[0017] The knife group includes: a knife seat arranged on the cutting sliding block, a peeling knife arranged on both sides of the knife seat, and a cutting knife arranged at the center of the knife seat, and the distance from the blade surface of the peeling knife to the surface of the knife seat is smaller than the distance from the blade surface of the cutting knife to the surface of the knife seat.

[0018] Furthermore, the mobile welding platform includes: a linear module arranged on the machine platform, and a mobile jig movably arranged on the moving end of the linear module, a material tray movably placed on the mobile jig, a positioning connection module corresponding to the bottom surface of the mobile jig and the upper surface of the moving end of the linear module, the positioning connection module includes connecting protrusions and connecting grooves that are connected and embedded with each other, and the connecting protrusions and connecting grooves are respectively arranged on the upper surface of the moving end of the linear module or the bottom surface of the mobile jig.

[0019] Furthermore, the loading and unloading mechanism includes: a loading end and a unloading end respectively arranged at the front and rear ends of the mobile welding platform, the loading end and the unloading end are respectively provided with a conveyor belt, and a transferring mechanism arranged beside the conveyor belt, a mobile jig is transported on the conveyor belt, and the transferring mechanism includes: a transferring X-axis moving module arranged on the machine table, a transferring Z-axis lifting module arranged on the moving end of the transferring X-axis moving module, a transferring clamping bracket arranged on the moving end of the transferring Z-axis lifting module, a transferring clamping cylinder arranged on both sides of the transferring clamping bracket, and a transferring clamping claw arranged on two output ends of the transferring clamping claw cylinder, a clamping groove is provided on the side wall of the mobile jig corresponding to the transferring clamping claw, the end of the transferring clamping claw is bent inwardly, and the bent part is embedded in the clamping groove, and the transferring mechanism controls the transferring clamping claw through the transferring clamping claw cylinder, thereby moving the mobile jig between the conveyor belt and the mobile welding platform.

[0020] Furthermore, guide plates are provided on both sides of the conveyor belt, and the guide plates are provided with avoidance positions corresponding to the clamping grooves of the mobile fixture at the clamping positions of the transfer clamping claws.

[0021] By adopting the above scheme, the utility model starts the width adjustment driving mechanism to push the width adjustment plate downward, thereby pushing the wire clamping mechanism or the welding mechanism along the Y-axis direction through the width adjustment bar hole, and then adjusting the distance between adjacent wire taking mechanisms or adjacent welding mechanisms, so as to meet the distance requirements of welding positions when welding on the PCB board. By adopting a mobile width adjustment module to complete the width adjustment work during the movement of the wire taking mechanism and the welding mechanism, the welding wire distance requirements of different products can be met, and it can be ensured that when the wire cutting and stripping mechanism is feeding the wire, it is not necessary to adjust the distance between adjacent wires during feeding according to the welding position on the PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the utility model.

[0023] Figure 2 It is a structural schematic diagram of the mobile welding platform and the mobile width adjustment module.

[0024] Figure 3 It is a structural diagram of the wire taking mechanism.

[0025] Figure 4 It is a structural diagram of the welding mechanism.

[0026] Figure 5 It is a structural diagram of the wire cutting and stripping mechanism.

[0027] Figure 6 It is a structural diagram of the wire cutting frame.

[0028] Figure 7 Schematic diagram of the internal structure of the wire cutting frame.

[0029] Figure 8 It is a structural schematic diagram of the loading and unloading mechanism and the mobile welding platform. DETAILED DESCRIPTION

[0030] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0031] See also Figure 1 , Figure 2 The utility model provides an electronic circuit automatic welding production line, comprising: a machine 1, a wire feeding mechanism arranged beside the machine 1, a wire cutting and stripping mechanism 2 arranged on the machine 1, a mobile welding platform 3 arranged on the machine 1, a loading and unloading mechanism 4 arranged at both ends of the mobile welding platform 3, two groups of mobile width adjustment modules 5 mounted above the mobile welding platform 3, a plurality of wire taking mechanisms 6 arranged on one side of the mobile width adjustment module 5, and a plurality of welding mechanisms 7 arranged on the other side of the mobile width adjustment module 5.

[0032] When working, the wire supply mechanism provides wires to the wire cutting and stripping mechanism 2, and the wire cutting and stripping mechanism 2 cuts and strips the rubber of the wires, and tins the core wires at the end where the rubber stripping is completed. The wire taking mechanism 6 clamps the wires provided by the wire cutting and stripping mechanism 2, and moves the wires to the mobile welding platform 3. At the same time, the distance between the adjacent wire taking mechanisms 6 and the adjacent welding mechanisms 7 is adjusted by the mobile width adjustment module 5 to meet the welding wire requirements of the PCB board on the mobile width adjustment module 5, thereby reducing the movement of the wire taking mechanism 6 and the welding mechanism 7, thereby improving the efficiency of welding the PCB board. At the same time, by adjusting the distance between adjacent wire taking mechanisms 6, when the feeder cutting and stripping of the wires on the wire cutting and stripping mechanism 2 is performed, the distance between the adjacent wires in the relevant mechanism can be closer, meeting the needs of processing more wires at the same time, improving the efficiency of wire supply, and making the overall equipment more compact and reducing the space occupied.

[0033] See also Figure 2 , Figure 3The movable width adjustment module 5 includes: a gantry bracket 51 mounted above the movable welding platform 3, a Y-axis movable module 52 arranged on the gantry bracket 51, a Z-axis movable module 53 arranged on the moving end of the Y-axis movable module 52, a lifting plate 54 arranged on the moving end of the Z-axis movable module 53, a width adjustment driving mechanism 55 arranged on the lifting plate 54, and a width adjustment plate 56 connected to the output end of the width adjustment driving mechanism 55, the width adjustment plate 56 is provided with a plurality of width adjustment strip holes 561, and the width adjustment strip holes 561 are arranged on the width adjustment plate 56 at different inclination angles, and the wire taking mechanism 6 and the welding mechanism 7 are respectively movably arranged on the lifting plate 56 and connected to the width adjustment strip holes 561.

[0034] In some embodiments, the ends of adjacent width adjustment strip holes 561 close to the bottom of the width adjustment plate 56 are closer to each other, while the ends close to the top of the width adjustment plate 56 are farther from each other. The distances between adjacent width adjustment strip holes 561 on the same horizontal line are the same, thereby ensuring that the distance between the wire taking mechanism 6 or the welding mechanism 7 remains consistent during the width adjustment process.

[0035] Under normal conditions, the width adjustment plate 56 is located at the highest position, and the adjacent wire-taking mechanisms 6 or welding mechanisms 7 are at the position with the smallest relative distance, and the wire-taking mechanisms 6 or welding mechanisms 7 are retracted. After the wire-taking mechanism 6 clamps the wire to be welded, the mobile width adjustment module 5 moves the wire-taking mechanism 6 to the top of the mobile welding platform 3. The mobile welding platform 3 moves the PCB board to be welded to the bottom of the wire-taking mechanism 6 and the welding mechanism 7. When the Y-axis moving module 52 and the Z-axis moving module 53 adjust and move the positions of the wire-taking mechanism 6 and the welding mechanism 7, the width adjustment drive mechanism 55 is started to push the width adjustment plate 56 downward, thereby pushing the wire-taking mechanism 6 or the welding mechanism 7 along the Y-axis direction through the width adjustment strip hole 561, and then adjusting the distance between adjacent wire-taking mechanisms 6 or adjacent welding mechanisms 7, so as to meet the distance requirements of the welding positions when welding on the PCB board. By adopting the mobile width adjustment module 5, the width adjustment work is completed during the movement of the wire taking mechanism 6 and the welding mechanism 7, so as to meet the welding wire distance requirements of different products, and ensure that the wire cutting and stripping mechanism 2 does not need to adjust the distance between adjacent wires during feeding according to the welding position on the PCB board.

[0036] In some embodiments, a plurality of width adjustment rails 541 distributed in the horizontal direction are provided on the lifting plate 56, and a width adjustment slider 542 is movably mounted on the width adjustment rail 541, and the wire taking mechanism 6 and the welding mechanism 7 are respectively provided on the width adjustment slider 542. When the width adjustment driving mechanism 55 drives the width adjustment plate 56 to move, and drives the wire taking mechanism 6 or the welding mechanism 7 to move in the Y-axis direction, the width adjustment slider 542 connected to the wire taking mechanism 6 or the welding mechanism 7 moves along the width adjustment rail 541, and the width adjustment rail 541 provides guidance and limit for the movement of the width adjustment slider 542, and reduces the friction during the movement, so as to ensure the stability of the moving state of the wire taking mechanism 6 or the welding mechanism 7 during the width adjustment process.

[0037] In some embodiments, the width adjustment drive mechanism 55 adopts a servo motor, the output end of the servo motor is connected to a screw transmission mechanism, and the motion end of the screw transmission mechanism is connected to the width adjustment plate 56. The servo motor has the characteristics of fast response, high sensitivity, high precision, strong stability, etc., can quickly respond to control signals, and achieve very precise position control and motion control, meet the needs of position adjustment of the wire taking mechanism 6 or the welding mechanism 7, and can accurately move the wire taking mechanism 6 or the welding mechanism 7 to the working position.

[0038] In some embodiments, the width adjustment driving mechanism 55 adopts an electric push-pull rod, and the output rod of the electric push-pull rod is connected to the width adjustment plate 56. The electric push-pull rod has the characteristics of small size, low noise, and easy installation, and can be controlled by configuring an encoder, a frequency converter, a potentiometer, etc., so as to achieve high-precision online control, meet the requirements for position adjustment of the wire taking mechanism 6 or the welding mechanism 7, and improve the accuracy of the width adjustment work.

[0039] See also Figure 3 The wire-taking mechanism 6 comprises: an active adjustment plate 562 movably connected to the width adjustment plate 56, a pneumatic clamping jaw 61 arranged on the active adjustment plate 562, a guide cylinder 62 arranged on the pneumatic clamping jaw 61, and a guide pressing jaw 63 arranged on the output end of the guide cylinder 62, the end of the guide pressing jaw 63 is provided with a V-shaped groove or a U-shaped groove, and an adjustment guide column is provided on the active adjustment plate 562, and the adjustment guide column is embedded in the width adjustment strip hole 561. When clamping the wire, the front end of the wire is limited and fixed by the V-shaped groove or the U-shaped groove of the guide pressing jaw 63 arranged at the front end of the pneumatic clamping jaw 61, so as to avoid the deviation of the wire during the welding process. At the same time, the guide pressing jaw 63 is driven by the guide cylinder 62 to press the front end of the wire downward, so as to facilitate the welding mechanism 7 to weld the front end of the wire to the PCB board or components.

[0040] See also Figure 4The welding mechanism 7 includes: an active adjustment plate 562 movably connected to the width adjustment plate 56, a welding gun head 71 disposed on the active adjustment plate 562, an adjustment bracket 72 disposed beside the welding gun head 71, and a welding wire guide head 73 disposed on the adjustment bracket 72, wherein welding wire is movably inserted into the welding wire guide head 73. A plurality of welding wire coils 74 and a welding wire feeding module 75 are disposed beside the Z-axis moving module 53 corresponding to the welding mechanism 7, and the welding wires of the welding wire coils 74 pass through the welding wire feeding module 75 and the welding wire guide head 73 in sequence. The welding wire is supplied by the welding wire coil 74, and when the welding gun head 71 performs high-temperature welding, the welding wire extending from the welding wire guide head 73 is heated to a molten state, so that the exposed core wire part of the wire is welded and fixed on the PCB board, thereby ensuring the electrical connection state between the wire and the PCB board, and making the wire firmly connected to the PCB board, thereby improving the stability of the wire welding effect.

[0041] See also Figures 5 to 7 The wire cutting and stripping mechanism 2 includes: a wire cutting frame 21 arranged on the machine 1, a wire dividing mechanism 22 arranged on the wire cutting frame 21, a cutting mechanism 23 arranged at the rear end of the wire dividing mechanism 22, a traction mechanism 24 and a wire clamping mechanism 25 arranged at the rear end of the cutting mechanism 23, and the wire dividing mechanism 22 includes: a wire dividing seat 221 arranged on the wire cutting frame plate 21, a wire dividing driving mechanism 222 arranged on the wire dividing seat 221, and a sliding wire organizing seat 223 arranged on the output end of the wire dividing driving mechanism 222, and the wire dividing driving mechanism 222 drives the sliding wire organizing seat 223 to reciprocate in the Y-axis direction.

[0042] During operation, the wire supply mechanism inserts different wires into the sliding wire seat 223 of the wire distribution mechanism 22 in sequence according to the set regular distribution. When a certain type of wire or a certain type of wire combination needs to be selected for welding, the wire distribution drive mechanism 222 is started to drive the sliding wire seat 223 to move, so that the corresponding position of the sliding wire seat 222 with the corresponding wire inserted corresponds to the wire clamping position of the traction mechanism 24. The traction mechanism 24 moves to the side of the sliding wire seat 223, clamps the selected wire and moves in the direction of the cutting mechanism 23, and clamps and fixes the wire through the wire clamping mechanism 25, while releasing the traction mechanism 24. Then, the outer rubber layer of the wire at the stripping position is cut off by the cutting mechanism 23, and the core wire of the wire is cut off at the cutting position, so as to meet the needs of stripping and cutting the wire.

[0043] In some embodiments, the wire-dividing driving mechanism 222 uses a servo motor, and the output end of the servo motor is connected to a screw transmission mechanism, and the output end of the screw transmission mechanism is connected to the sliding wire-management seat 223. The servo motor has the characteristics of fast response, high sensitivity, high precision, strong stability, etc., can quickly respond to control signals, and achieve very precise position control and motion control, meet the needs of position adjustment of the sliding wire-management seat 223, so as to supply the corresponding wires to the traction mechanism 24 for grabbing and traction according to the system settings, so as to provide the wires required for welding for subsequent welding work.

[0044] In some embodiments, the line driving mechanism 222 uses an electric push-pull rod, and the output end of the electric push-pull rod is connected to the sliding wire seat 223. The electric push-pull rod has the characteristics of small size, low noise, and easy installation, and can be controlled by configuring an encoder, a frequency converter, a potentiometer, etc., so as to achieve high-precision online control, meet the needs of position adjustment of the sliding wire seat 223, and supply the corresponding wires to the traction mechanism 24 for grabbing and traction according to the system settings, so as to provide the wires required for welding for subsequent welding work.

[0045] The wire-dividing mechanism 22 and the wire-clamping mechanism 23 are respectively connected with a tin-dipping mechanism 26, and the tin-dipping mechanism 26 comprises: a rotary drive motor 261 arranged on the wire cutting frame 2, a belt transmission mechanism 262 connected to the output end of the rotary drive motor 261, a turntable 263 connected to the output end of the belt transmission mechanism 262, a moving module 264 arranged on the turntable 263, a first dipping tank 265 and a second dipping tank 266 arranged below the wire-dividing mechanism 22 and / or the wire-clamping mechanism 25, the wire-dividing mechanism 22 and the wire-clamping mechanism 25 are respectively arranged on the moving end of the moving module 264, the first dipping tank 265 is filled with flux, and the second dipping tank 266 is filled with tin liquid. After the cutting mechanism 23 strips and cuts the wire, the tinning mechanism 26 connected to the wire splitting mechanism 22 and the wire clamping mechanism 25 is started respectively, and the exposed core wires at the ends of the wires on the wire splitting mechanism 22 or the wire clamping mechanism 25 are driven toward the first dipping tank 265 by starting the rotating drive motor 261 and transmitting through the belt transmission mechanism 262, and the moving module 264 is started to extend the exposed core wire part of the wire into the first dipping tank 265 to dip the soldering flux. Then the moving module 264 is reset, and the wire is continued to be moved to the corresponding position of the second dipping tank 266 by the rotating drive motor 261, and the moving module 264 is started to extend the wire, so that the exposed core wires at the ends of the wires with the soldering flux attached are extended into the second dipping tank 266 for tinning. After the tinning is completed, the rotating drive motor 261 drives the turntable 263 to reset.

[0046] After the cutting mechanism 23 peels and cuts the wire, the exposed core wire at the end of the wire is in a scattered state, and is dipped in flux and tin liquid in succession to improve the subsequent welding effect of the wire on the PCB. By arranging the tinning mechanism 26 at the wire dividing mechanism 22 and the wire clamping mechanism 25, both ends of the wire are tinned, effectively improving the welding effect of the two ends of the wire.

[0047] The traction mechanism 24 includes: a traction movable module 241 arranged beside the wire clamping mechanism 25, a traction seat 242 arranged on the moving end of the traction movable module 241, a traction cylinder 243 arranged on the traction seat 242, a guide sleeve 244 sleeved on the outside of the output end of the traction cylinder 243, and a wire clamping claw 245 connected to the output end of the traction cylinder 243, the wire clamping claw 245 is arranged at the front end of the guide sleeve 244, the rear end of the wire clamping claw 245 is hinged to the output end of the traction cylinder 243, and the middle part of the wire clamping claw 245 is hinged to the guide sleeve 244.

[0048] The wire clamping mechanism 22 adopts a pneumatic clamp. When the wire needs to be clamped, the pneumatic clamp is started to clamp and fix the wire, thereby facilitating the tinning of the wire and facilitating the wire taking mechanism 6 at the rear end to take out the wire and move it to the mobile welding platform 3 for welding.

[0049] The cutting mechanism 23 includes: a cutting drive motor 231 disposed on the cutting frame 21, a bidirectional screw rod 232 connected to the output end of the cutting drive motor 231, a cutting slide block 233 respectively sleeved on both ends of the bidirectional screw rod 232, and a knife group 234 disposed on the cutting slide block 233, wherein the bidirectional screw rod 232 is disposed along the Z direction. The bidirectional screw rod 232 is driven to rotate by the cutting drive motor 231, thereby driving the upper and lower cutting slide blocks 233 to move in opposite directions at the same time, so that the upper and lower knife groups 234 gather toward the middle and act on the wires to cut and strip the wires.

[0050] The knife group 234 includes: a knife seat 2341 arranged on the cutting sliding block 233, a stripping knife 2343 arranged on both sides of the knife seat 2341, and a cutting knife 2343 arranged at the center of the knife seat 2344. The distance between the blade surface 2341 of the stripping knife 2343 and the surface of the knife seat 2341 is smaller than the distance between the blade surface of the cutting knife 2343 and the surface of the knife seat 2341. By setting different blade surface distances, it is ensured that the stripping knife 2342 strips the rubber while avoiding cutting the core wire in the center of the wire, so as to achieve the difference in cutting effect between the stripping knife 2342 and the cutting knife 2343, and meet the needs of wire stripping and cutting respectively.

[0051] See also Figure 1 , Figure 8 The mobile welding platform 3 includes: a linear module 31 arranged on the machine 1, and a mobile fixture 32 movably arranged on the moving end of the linear module 31, a material tray is movably placed on the mobile fixture 32, and a positioning connection module is correspondingly arranged on the bottom surface of the mobile fixture 32 and the upper surface of the moving end of the linear module 31, and the positioning connection module includes a connecting protrusion and a connecting groove that are mutually connected and embedded, and the connecting protrusion and the connecting groove are respectively correspondingly arranged on the upper surface of the moving end of the linear module 31 or the bottom surface of the mobile fixture 32. The linear module 31 drives the mobile fixture 32 to move between the loading and unloading at both ends to realize the loading and unloading process, and at the same time, the PCB board placed in the material tray can be fixed, so that the welding mechanism 7 can weld and fix the wires clamped by the wire taking mechanism 6 on the PCB board. The connecting protrusion and the connecting groove are mutually engaged and connected, so that the loading and unloading mechanism 4 can move the mobile fixture 32 as a whole and movably place it on the linear module 31, so as to position and limit the mobile fixture 32 to meet the needs of transportation and welding.

[0052] The loading and unloading mechanism 4 includes: a loading end 401 and a unloading end 402 respectively arranged at the front and rear ends of the mobile welding platform 3, the loading end 401 and the unloading end 402 are respectively provided with a conveyor belt 41, and a transfer mechanism 42 arranged beside the conveyor belt 41, the conveyor belt 41 carries a mobile fixture 32, and the transfer mechanism 42 includes: a transfer X-axis moving module 421 arranged on the machine 1, a transfer Z-axis lifting module 422 arranged on the moving end of the transfer X-axis moving module 421, and a transfer Z-axis lifting module 422 arranged on the transfer Z-axis lifting module 422. The transfer clamping bracket 423 on the moving end, the transfer clamping cylinder 424 arranged on both sides of the transfer clamping bracket 423, and the transfer clamping claws 425 arranged on the two output ends of the transfer clamping claw cylinder 424, the side wall of the mobile jig 32 is provided with a clamping groove corresponding to the transfer clamping claw 425, the end of the transfer clamping claw 425 is bent inward, and the bent part is embedded in the clamping groove, the transfer mechanism 42 controls the transfer clamping claw 425 through the transfer clamping claw cylinder 424, so as to move the mobile jig 32 between the conveyor belt 41 and the mobile welding platform 3.

[0053] The loading end 401 transfers the mobile jig 32 to the side of the mobile welding platform 3 through the conveyor belt 41, and inserts the transfer clamping claw 425 into the clamping groove of the side wall of the mobile jig, thereby clamping and fixing the mobile jig 21. Then the transfer Z-axis lifting module 422 and the transfer X-axis moving module 421 are started successively to move the mobile jig 32 to the top of the moving end of the linear module 31, and then the mobile jig 32 is placed on the moving end of the linear module 31, so that the moving end of the mobile jig 32 and the linear module 31 are connected and positioned through the positioning connection module, so that the mobile jig 32 can move with the linear module 31. After the welding mechanism 7 completes the wire welding operation on the PCB board, the linear module 31 moves the mobile jig 32 to the side of the unloading end 402, and places the mobile jig 32 on the conveyor belt 41 through the transfer mechanism 42 of the unloading end 402 for unloading.

[0054] Guide plates are provided on both sides of the conveyor belt 41, and the clamping grooves of the mobile jig 32 at the clamping position of the transfer clamping claws 425 are provided with avoidance positions, so as to facilitate the transfer mechanism 42 to clamp and transfer the mobile jig 32 while providing effective limiting and guiding effect for the feeding of the mobile jig 32.

[0055] In summary, the utility model starts the width adjustment drive mechanism to push the width adjustment plate downward, thereby pushing the wire clamping mechanism or the welding mechanism along the Y-axis direction through the width adjustment bar hole, and then adjusting the distance between adjacent wire taking mechanisms or adjacent welding mechanisms, so as to meet the distance requirements of the welding positions when welding on the PCB board. By using a mobile width adjustment module to complete the width adjustment work during the movement of the wire taking mechanism and the welding mechanism, the welding wire distance requirements of different products can be met, and it can be ensured that when the wire cutting and stripping mechanism is feeding the wire, it is not necessary to adjust the distance between adjacent wires during feeding according to the welding position on the PCB board.

[0056] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An electronic circuit automatic welding production line, characterized in that: include: A machine platform, a wire feeding mechanism arranged beside the machine platform, a wire cutting and stripping mechanism arranged on the machine platform, a mobile welding platform arranged on the machine platform, loading and unloading mechanisms arranged at both ends of the mobile welding platform, two sets of mobile width adjustment modules erected above the mobile welding platform, a plurality of wire taking mechanisms arranged on the mobile width adjustment modules on one side, and a plurality of welding mechanisms arranged on the mobile width adjustment modules on the other side; The mobile width adjustment module includes: a gantry bracket mounted above the mobile welding platform, a Y-axis mobile module arranged on the gantry bracket, a Z-axis mobile module arranged on the moving end of the Y-axis mobile module, a lifting plate arranged on the moving end of the Z-axis mobile module, a width adjustment driving mechanism arranged on the lifting plate, and a width adjustment plate connected to the output end of the width adjustment driving mechanism, a plurality of width adjustment strip holes are arranged on the width adjustment plate, and the width adjustment strip holes are arranged on the width adjustment plate at different inclination angles, and the wire taking mechanism and the welding mechanism are respectively movably arranged on the lifting plate and connected to the width adjustment strip holes.

2. The electronic circuit automatic welding production line according to claim 1 is characterized in that: The wire taking mechanism includes: an active adjustment plate movably connected to the width adjustment plate, a pneumatic clamping jaw arranged on the active adjustment plate, a guide cylinder arranged on the pneumatic clamping jaw, and a guide pressing jaw arranged on the output end of the guide cylinder, the end of the guide pressing jaw is provided with a V-shaped groove or a U-shaped groove, and an adjustment guide column is provided on the active adjustment plate, and the adjustment guide column is embedded in the width adjustment strip hole.

3. The electronic circuit automatic welding production line according to claim 1 is characterized in that: The welding mechanism comprises: an active adjustment plate movably connected to the width adjustment plate, a welding gun head arranged on the active adjustment plate, an adjustment bracket arranged beside the welding gun head, and a welding wire guide head arranged on the adjustment bracket, wherein the welding wire guide head is movably inserted with welding wire; A plurality of welding wire coils and welding wire feeding modules are arranged on the side of the Z-axis moving module corresponding to the welding mechanism, and the welding wires of the welding wire coils pass through the welding wire feeding module and the welding wire guide head in sequence.

4. The electronic circuit automatic welding production line according to claim 1 is characterized in that: The wire cutting and stripping mechanism includes: a wire cutting frame arranged on the machine platform, a wire dividing mechanism arranged on the wire cutting frame, a cutting mechanism arranged at the rear end of the wire dividing mechanism, a traction mechanism and a wire clamping mechanism arranged at the rear end of the cutting mechanism, and the wire dividing mechanism includes: a wire dividing seat arranged on the wire cutting frame plate, a wire dividing driving mechanism arranged on the wire dividing seat, and a sliding wire organizing seat arranged on the output end of the wire dividing driving mechanism, and the wire dividing driving mechanism drives the sliding wire organizing seat to reciprocate in the Y-axis direction.

5. The electronic circuit automatic welding production line according to claim 4 is characterized in that: The wire-dividing mechanism and the wire-clamping mechanism are respectively connected with a tin-dipping mechanism, and the tin-dipping mechanism comprises: a rotary drive motor arranged on the wire cutting frame, a belt transmission mechanism connected to the output end of the rotary drive motor, a turntable connected to the output end of the belt transmission mechanism, a moving module arranged on the turntable, a first dipping tank and a second dipping tank arranged below the wire-dividing mechanism and / or the wire-clamping mechanism, the wire-dividing mechanism and the wire-clamping mechanism are respectively arranged on the moving end of the moving module, the first dipping tank is filled with flux, and the second dipping tank is filled with tin liquid.

6. The electronic circuit automatic welding production line according to claim 4 is characterized in that: The traction mechanism comprises: a traction movable module arranged beside the wire clamping mechanism, a traction seat arranged on the moving end of the traction movable module, a traction cylinder arranged on the traction seat, a guide sleeve sleeved on the outer side of the output end of the traction cylinder, and a wire clamping claw connected to the output end of the traction cylinder, the wire clamping claw is arranged at the front end of the guide sleeve, the rear end of the wire clamping claw is hinged to the output end of the traction cylinder, and the middle part of the wire clamping claw is hinged to the guide sleeve; The wire clamping mechanism adopts pneumatic clamping claws.

7. The electronic circuit automatic welding production line according to claim 4 is characterized in that: The cutting mechanism comprises: a cutting drive motor arranged on the cutting frame, a bidirectional lead screw connected to the output end of the cutting drive motor, a cutting sliding block respectively sleeved on both ends of the bidirectional lead screw, and a knife group arranged on the cutting sliding block, wherein the bidirectional lead screw is arranged along the Z direction; The knife group includes: a knife seat arranged on the cutting sliding block, a peeling knife arranged on both sides of the knife seat, and a cutting knife arranged at the center of the knife seat, and the distance from the blade surface of the peeling knife to the surface of the knife seat is smaller than the distance from the blade surface of the cutting knife to the surface of the knife seat.

8. The electronic circuit automatic welding production line according to claim 1 is characterized in that: The mobile welding platform includes: a linear module arranged on the machine platform, and a mobile jig movably arranged on the moving end of the linear module, a material tray is movably placed on the mobile jig, and a positioning connection module is correspondingly arranged on the bottom surface of the mobile jig and the upper surface of the moving end of the linear module. The positioning connection module includes connecting protrusions and connecting grooves that are connected and embedded with each other, and the connecting protrusions and connecting grooves are respectively arranged on the upper surface of the moving end of the linear module or the bottom surface of the mobile jig.

9. The electronic circuit automatic welding production line according to claim 1, characterized in that: The loading and unloading mechanism comprises: a loading end and a unloading end respectively arranged at the front and rear ends of the mobile welding platform, the loading end and the unloading end are respectively provided with a conveyor belt, and a transfer mechanism arranged beside the conveyor belt, a mobile jig is transported on the conveyor belt, and the transfer mechanism comprises: a transfer X-axis moving module arranged on the machine platform, a transfer Z-axis lifting module arranged on the moving end of the transfer X-axis moving module, a transfer clamping bracket arranged on the moving end of the transfer Z-axis lifting module, a transfer clamping cylinder arranged on both sides of the transfer clamping bracket, and a transfer clamping claw arranged on two output ends of the transfer clamping claw cylinder, a clamping groove is arranged on the side wall of the mobile jig corresponding to the transfer clamping claw, the end of the transfer clamping claw is bent inwardly, and the bent part is embedded in the clamping groove, and the transfer mechanism controls the transfer clamping claw through the transfer clamping claw cylinder, thereby moving the mobile jig between the conveyor belt and the mobile welding platform.

10. The electronic circuit automatic welding production line according to claim 9, characterized in that: Guide plates are arranged on both sides of the conveyor belt, and the guide plates are provided with avoidance positions corresponding to the clamping grooves of the mobile fixture at the clamping positions of the transfer clamping claws.

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