A welding device and welding method for a precision flow divider

Abstract

The application relates to a welding device and a welding method of a precision shunt, relates to the technical field of shunt welding, and comprises a rotating platform arranged in a rotating mode, a feeding unit, a pin conveying unit, a detection unit and a marking and discharging unit are arranged on a rack, a plurality of clamping units are arranged on the rotating platform, the rotating platform is used for driving the clamping units to move circularly among the feeding unit, the pin conveying unit, the detection unit and the marking and discharging unit, the feeding unit is used for mounting the shunt on the clamping units, the pin conveying unit conveys the pins to the shunts, and the shunts and the pins are welded through a welding unit, the detection unit detects the pin welding and discharges unqualified shunts, and the marking and discharging unit is used for marking the qualified shunts after welding and discharging and collecting. The application has the advantages that the shunt welding and discharging are carried out in different stations, the shunt welding efficiency is improved, and the effect of batch welding of the shunts is suitable.

Description

Technical Field

[0001] This application relates to the field of shunt welding technology, and in particular to a welding apparatus and welding method for a precision shunt. Background Technology

[0002] Precision shunts are high-precision milliohm resistors, typically welded using energy storage welding. They play an important role in fields such as current measurement, current adjustment, circuit protection, fluid distribution, and control.

[0003] In the production process of shunts, the pins need to be soldered to the shunt. The existing soldering method involves placing the shunt on a clamp and holding it, and then using a soldering device to solder the shunt and the pins. After the soldering is completed, the shunt is removed from the clamp. The soldering device is in a stopped state when the shunt is installed on and removed from the clamp, which results in low soldering efficiency of the shunt and is not suitable for mass soldering of shunts. Therefore, there is an urgent need to develop a new soldering device for precision shunts. Summary of the Invention

[0004] To improve construction safety during the construction process, this application provides a welding device and welding method for a precision shunt.

[0005] On the one hand, the welding device for a precision shunt provided in this application adopts the following technical solution: A welding device for a precision distributor includes a rotating platform rotatably mounted on a frame. The frame is equipped with a feeding unit, a pin conveying unit, a detection unit, and a marking and unloading unit. The rotating platform is equipped with multiple clamping units for holding the distributor. The rotating platform drives the clamping units to circulate among the feeding unit, the pin conveying unit, the detection unit, and the marking and unloading unit. The feeding unit is used to install the distributor onto the clamping unit. The pin conveying unit conveys the pins onto the distributor, and the distributor is welded to the pins by the welding unit. The detection unit is used to detect whether the pin welding is qualified and to remove the distributor with unqualified welding from the clamping unit. The marking and unloading unit is used to mark the distributor with qualified welding and to unload and collect the unqualified product.

[0006] By adopting the above technical solution, when welding the shunt to the pins, the shunt is first transported one by one to the clamping unit through the feeding unit. Then, the rotating platform moves the shunt to the welding station. At the same time, the pins are transported to the shunt through the pin conveying unit. Then, the welding unit welds the pins to the shunt. The two pins are welded through two welding stations. Then, the rotating platform moves the shunt to the inspection station. The inspection unit inspects the welding quality of the shunt pins. Those that are not qualified are directly unloaded. Those that are qualified are moved to the unloading station with the rotating platform. The marking and unloading unit marks the qualified shunts and unloads them for collection. Thus, the welding and unloading of the shunt are carried out at different stations, which improves the welding efficiency of the shunt and is suitable for the batch welding of shunts.

[0007] In one specific implementation, the clamping unit includes a push plate, a stop block, and a telescopic spring. The push plate is slidably disposed on the rotating platform. The stop block is disposed on the rotating platform and opposite to the push plate. The diverter is located between the stop block and the push plate. One end of the telescopic spring is connected to the push plate, and the other end is connected to the rotating platform, and is used to push the diverter against the stop block.

[0008] By adopting the above technical solution, when placing the distributor on the rotating platform, the distributor is placed between the push plate and the stop block, and then the telescopic spring drives the push plate to press the distributor against the stop block, thereby completing the installation of the distributor and improving the stability of the rotating platform driving the distributor to rotate.

[0009] In one specific implementation, the detection unit includes a clamping and moving mechanism, a detection clamping mechanism, and a resistance detector. The clamping and moving mechanism is used to clamp the shunt unloading device. The detection clamping mechanism is provided with a detection terminal electrically connected to the resistance detector. The detection clamping mechanism is used to drive the detection terminal to fit with the pin to form a path. The frame is provided with a first stretching mechanism, which is opposite to the detection clamping mechanism. The first stretching mechanism is used to drive the push plate away from the stop block. If the pin soldering is not up to standard, the clamping and moving mechanism drives the distributor to move to one side of the rotating platform for unloading.

[0010] By adopting the above technical solution, when inspecting the welding condition of the shunt and the pins, the clamping mechanism drives the clamping end to contact the pins on the shunt. Then, the reading of the resistance detector is used to determine whether the welding of the pins is qualified. If the welding of the pins is qualified, the rotating platform drives the shunt to the next station. If the welding of the pins is unqualified, the first tensioning mechanism pulls the push plate away from the baffle, and then the clamping and moving mechanism clamps the shunt and unloads it, thereby completing the inspection of the welding quality of the shunt and the pins and improving the inspection efficiency of the welding quality of the pins on the shunt.

[0011] In one specific implementation, the clamping and moving mechanism includes a spatial moving frame and a first gripper cylinder, the first gripper cylinder being disposed on the spatial moving frame and capable of clamping the distributor.

[0012] By adopting the above technical solution, when clamping the splitter, the two output shafts of the gripper cylinder clamp the splitter, and then the space moving frame drives the splitter to move, thereby improving the convenience of clamping and moving the splitter.

[0013] In one specific implementation, the push plate is provided with a first clamping groove extending through to the side wall of the splitter, and the stop block is provided with a second clamping groove extending through to the side wall of the splitter. The first clamping groove and the second clamping groove are opposite to each other, and the two output shafts of the first gripper cylinder can be inserted into the first clamping groove and the second clamping groove respectively.

[0014] By adopting the above technical solution, when clamping the splitter, the two output shafts of the gripper cylinder are respectively inserted into the first clamping groove and the second clamping groove, thereby improving the convenience of clamping the splitter.

[0015] In one specific implementation scheme, the marking and unloading unit includes a laser marking machine, an unloading moving mechanism, and a second gripper cylinder. The laser marking machine is connected to the frame via a reciprocating mechanism. Driven by the reciprocating mechanism, the laser marking machine can move toward or away from the distributor and can make contact with the distributor to mark. The frame is provided with a second tensioning mechanism, which is arranged opposite to the unloading moving mechanism and is used to pull the push plate away from the stop block. The second gripper cylinder is arranged on the unloading moving mechanism and is used to clamp the distributor. The unloading moving mechanism is used to drive the distributor to move and unload.

[0016] By adopting the above technical solution, the welded and qualified distributor moves to the unloading station with the rotating platform. Then, the reciprocating mechanism drives the laser marking machine to mark the distributor. Then, the second stretching mechanism pulls the push plate away from the stop block. The unloading and moving mechanism drives the second gripper cylinder to clamp and move the distributor and unload it, which facilitates the unloading and marking of the distributor.

[0017] In one specific implementation, the lead conveying unit includes a reciprocating frame, a clamping conveying wheel assembly, and a cutting mechanism. Both the clamping conveying wheel assembly and the cutting mechanism are mounted on the reciprocating frame. Each clamping conveying wheel assembly includes two clamping wheels capable of clamping the lead wire and continuously conveying it to the cutting mechanism. The cutting mechanism can cut the lead wire into short leads. The welding unit includes a first terminal and a second terminal. The first terminal is disposed on the reciprocating moving frame and can contact the pin to form a path. The second terminal is disposed on the frame and can contact the shunt to form a path. The reciprocating moving frame is used to drive the pin to abut against the shunt to form a path.

[0018] By adopting the above technical solution, when the splitter moves to the welding station, the clamping and conveying wheel group moves the lead wire toward the splitter, and then the cutting mechanism cuts the front end of the lead wire to form a lead. Then the first terminal contacts the lead to form a path, and the second terminal contacts the splitter to form a path. Then the reciprocating moving frame drives the lead to abut against the splitter to form a path, so that the splitter and the lead are welded, which facilitates the batch welding of the splitter and the lead.

[0019] In one specific implementation, the cutting mechanism includes a cutter and a feed wheel assembly. A cutting cylinder is provided on the reciprocating frame. The cutter is located on the output shaft of the cutting cylinder and is capable of cutting the lead wire. The feed wheel assembly includes two feed wheels rotatably mounted on the reciprocating frame. The two feed wheels are capable of clamping the lead. The cutter is connected to the feed wheels through a transmission component. The cutter can drive the feed wheels to rotate, causing the lead to extend out of the first terminal.

[0020] By adopting the above technical solution, when cutting the lead wire, the cutting cylinder drives the cutter to move and cut the lead wire. When the cutting is completed, the cutting cylinder drives the cutter away from the lead wire. The cutter drives the feed wheel to rotate through the transmission component. The feed wheel drives the cut lead to extend out of the first terminal, which facilitates the soldering between the lead and the shunt.

[0021] In one specific implementation, the transmission component includes a meshing drive gear and a drive rack. The drive rack is mounted on the cutter. The drive gear is rotatably mounted on the reciprocating frame and coaxial with the feed wheel. A push block is slidably mounted on the drive gear along its own axial direction. The feed wheel has a slot for inserting the push block. The push block is used to push the feed wheel to rotate. A sliding surface is provided on the side wall of the slot, allowing the push block to slide out of the slot along the sliding surface. A limiting groove is provided on the end face of the feed wheel. A limiting block is slidably mounted on the reciprocating frame for inserting into the limiting groove. A guide surface is provided on the side wall of the limiting groove, allowing the limiting block to slide out of the limiting groove along the guide surface. The limiting block is used to limit the feed wheel from rotating toward the cutter. During the cutting process of the cutter, the feed wheel remains stationary. During the return stroke of the cutter, the feed wheel drives the pin to move towards the splitter.

[0022] By adopting the above technical solution, when the cutter moves towards the lead wire and cuts the lead wire, the cutter drives the drive gear to rotate through the drive rack. At this time, the limiting block is inserted into the limiting groove, and the drive gear drives the push block to slide out of the slot along the sliding surface. At this time, the feed wheel remains stationary. When the cutter finishes cutting and moves away from the lead wire, the drive rack drives the drive gear to rotate, and the drive gear drives the push block to insert into the slot, driving the feed wheel to rotate. At this time, the limiting block slides out of the limiting groove along the guide surface, and then the feed wheel drives the lead wire to move towards the splitter, so that the cutter drives the lead wire to slide, reducing the use of the power mechanism and improving the coordination between the movement of the lead wire and the sliding of the cutter.

[0023] On the other hand, the welding device for a precision shunt provided in this application adopts the following technical solution: A method for welding a precision shunt, using the welding apparatus for the precision shunt, includes the following steps: S1. Loading: The distributor is loaded onto the clamping unit on the rotating platform through the loading unit, and then the rotating platform drives the distributor to move to each station. S2, Welding: The rotating platform moves the splitter to the welding station. The pins are conveyed to the splitter through the pin conveying unit, and then the pins are welded to the splitter through the welding unit. The two pins are welded through two welding stations. S3. Inspection: The welding quality of the shunt pins is inspected by the inspection unit. Unqualified pins are directly unloaded, while qualified pins are moved to the next station by the rotating platform. S4. Marking and unloading: Mark the qualified distributors and unload them for collection.

[0024] In summary, this application includes at least one of the following beneficial technical effects: 1. When soldering the splitter to the pins, the rotating platform sequentially drives the splitter to the loading station for loading, the welding station for welding, the inspection station for inspection, and the unloading station for marking and unloading. This allows the welding and unloading of the splitter to be carried out at different stations, improving the welding efficiency of the splitter and making it suitable for batch welding of the splitter. 2. By sliding the cutter during the wire cutting process, the feed wheel is driven to extend the pin out of the first terminal, thereby reducing the use of a power mechanism and improving the coordination between the pin movement and the cutter sliding. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the welding device and welding method for a precision shunt according to an embodiment of this application.

[0026] Figure 2 yes Figure 1 Enlarged view of section A.

[0027] Figure 3 This is a structural diagram used to illustrate the clamping mechanism.

[0028] Figure 4 This is a schematic diagram illustrating the structure of the pin delivery unit.

[0029] Figure 5 It is a structural diagram used to illustrate the transmission components.

[0030] Figure 6 It is along Figure 5 A cross-sectional view along the BB line.

[0031] Figure 7 It is an exploded view used to show the slip surface.

[0032] Figure 8 It is an exploded view used to show the guide surface.

[0033] Figure 9 This is a schematic diagram used to illustrate the structure of the detection unit.

[0034] Figure 10 This is a structural diagram used to demonstrate the marking and unloading unit.

[0035] Figure 11 yes Figure 10 Enlarged view of section C.

[0036] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Rotating platform; 111. Loading station; 112. Welding station; 113. Inspection station; 114. Unloading station; 12. Diverter; 2. Loading unit; 21. Vibrating loading plate; 22. Clamping mechanism; 221. Rotary cylinder; 222. Third gripper cylinder; 223. First sliding cylinder; 23. Guide mechanism; 24. Loading sliding frame; 25. Fourth gripper cylinder; 26. Third stretching mechanism; 3. Pin conveying unit; 31. Reciprocating moving frame; 311. Linear moving mechanism; 312. Support frame; 32. Clamping and conveying wheel assembly; 321. Clamping wheel; 33. Cutting mechanism; 331. Cutter; 332. Feed wheel assembly; 3321. Feed wheel; 3322. Annular groove; 333. Cutting cylinder; 334. Cutting table; 335. Gear shaft; 336. Transmission component; 3361. Drive gear; 3362. Drive rack; 3363. Sliding groove; 3364. Push block; 3365. Support spring; 3366. Slot; 3367. Sliding surface; 3371. Limiting groove; 3372. Limiting frame; 3373, Limiting block; 3374, Limiting groove; 3375, Limiting spring; 3376, Guide surface; 4, Detection unit; 41, Clamping and moving mechanism; 411, Spatial moving frame; 412, First gripper cylinder; 42, Detection and clamping mechanism; 421, Mechanical frame; 422, Fifth gripper cylinder; 423, Detection end; 43, Resistance detector; 44, First tensioning mechanism; 5, Marking and unloading unit; 51, Laser marking machine; 52, Unloading and moving mechanism; 53, Second gripper cylinder; 54, Reciprocating mechanism; 55, Second... 56. Tensioning mechanism; 57. Rotary motor; 58. Second sliding cylinder; 69. Clamping unit; 61. Push plate; 611. Insulation part; 612. Copper base; 613. Insert groove; 62. Stop block; 63. Telescopic spring; 64. Insulation platform; 65. Roller; 661. First clamping groove; 662. Second clamping groove; 70. Welding unit; 71. First terminal; 711. Clamping block; 712. Clamping cylinder; 713. Clamping groove; 72. Second terminal; 721. Reciprocating cylinder; 723. Pressure block; 81. Lead wire; 82. Lead. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-11 This application will be described in further detail.

[0038] On one hand, embodiments of this application disclose a welding apparatus for a precision shunt.

[0039] Reference Figure 1 , Figure 2A welding device for a precision shunt includes a rotating platform 11 rotatably mounted on a frame 1. The rotating platform 11 is driven by an external motor, is disc-shaped, and rotates along a horizontal plane. The rotating platform 11 is sequentially equipped with a loading station 111, a welding station 112, an inspection station 113, and an unloading station 114. There are two welding stations 112, each welding one pin 82 (e.g., ...) Figure 4 The pins are welded to the distributor 12. The frame 1 is equipped with a feeding unit 2 located at the feeding station 111, a pin conveying unit 3 located at the welding station 112, a detection unit 4 located at the detection station 113, and a marking and unloading unit 5 located at the unloading station 114. The rotating platform 11 is equipped with multiple clamping units 6 for clamping the distributor 12. The multiple clamping units 6 are evenly arranged along the circumference of the rotating platform 11. The rotating platform 11 drives the distributor 12 to move cyclically between the loading station 111, the welding station 112, the inspection station 113, and the unloading station 114 through the clamping units 6. The loading unit 2 is used to install the distributor 12 onto the clamping unit 6. Each pin conveying unit 3 conveys the pin 82 onto the distributor 12 and welds the distributor 12 to the pin 82 through the welding unit 7. The inspection unit 4 is used to detect whether the welding of the pin 82 is qualified and to remove the distributor 12 with unqualified welding from the clamping unit 6. The marking and unloading unit 5 is used to mark the distributor 12 with qualified welding and to unload and collect it.

[0040] When welding the splitter 12 to the pins 82, the splitter 12 is first transported one by one to the clamping unit 6 through the feeding unit 2. Then, the rotating platform 11 moves the splitter 12 to the welding station 112. At the same time, the pins 82 are transported to the splitter 12 through the pin conveying unit 3. Then, the welding unit 7 welds the pins 82 to the splitter 12. The two pins 82 are welded through two welding stations 112. Then, the rotating platform 11 moves the splitter 12 to the inspection station 113. The inspection unit 4 inspects the welding quality of the pins 82 of the splitter 12. Those that are not qualified are directly unloaded. Those that are qualified are moved to the unloading station 114 with the rotating platform 11. The marking and unloading unit 5 marks the qualified splitter 12 and unloads it for collection. This allows the welding and unloading of the splitter 12 to be carried out at different stations, improving the welding efficiency of the splitter 12 and making it suitable for the batch welding of the splitter 12.

[0041] Reference Figure 1 , Figure 2In this embodiment, the clamping unit 6 includes a push plate 61, a stop block 62, and a telescopic spring 63. Several slide rails are fixedly provided on the rotating platform 11, and each slide rail corresponds to a push plate 61. The slide rails are arranged radially along the rotating platform 11, and the push plate 61 is slidably connected to the slide rails. Several insulating platforms 64 are provided on the rotating platform 11, and each insulating platform 64 corresponds to a slide rail and is opposite to the slide rails. The stop block 62 is fixedly provided on the insulating platform 64. The push plate 61 includes an insulating part 611 and a copper base part 612. The copper base part 612 is provided with a groove 613 for the diverter 12 to be inserted. One end of the telescopic spring 63 is fixedly connected to the push plate 61, and the other end is fixedly connected to the rotating platform 11. The diverter 12 can be embedded into the groove 613 and pressed against the groove wall of the groove 613 by the stop block 62. The two welded ends of the diverter 12 extend out of the groove 613. The insulating part 611 is provided with a roller 65, the copper base part 612 is provided with a first clamping groove 661 communicating with the groove 613, and the stop block 62 is provided with a second clamping groove 662 extending through to the side wall of the splitter 12. The first clamping groove 661 and the second clamping groove 662 are opposite to each other.

[0042] When placing the distributor 12 on the rotating platform 11, the distributor 12 is placed between the push plate 61 and the stop block 62. Then, the extension spring 63 drives the push plate 61 to press the distributor 12 against the stop block 62, thereby completing the installation of the distributor 12 and improving the stability of the rotating platform 11 in moving the distributor 12.

[0043] Reference Figure 1 , Figure 3 In this embodiment, the feeding unit 2 includes a vibrating feeding plate 21 and a clamping mechanism 22. The vibrating feeding plate 21 is mounted on the frame 1 and conveys the distributor 12 to the feeding station 111 regularly via the guiding mechanism 23. The clamping mechanism 22 includes a rotary cylinder 221 and a third gripper cylinder 222. A first sliding cylinder 223 is mounted on the frame 1, and the rotary cylinder 221 is mounted on the output shaft of the first sliding cylinder 223. A feeding sliding frame 24 is mounted on the frame 1, and the feeding sliding frame 24 consists of two linear moving parts. The structure is designed to enable horizontal and vertical sliding. A fourth gripper cylinder 25 is fixedly installed on the feeding slide frame 24. The feeding slide frame 24 drives the fourth gripper cylinder 25 to slide horizontally and vertically. The fourth gripper cylinder 25 is located above the rotary cylinder 221. The frame 1 is provided with a third tensioning mechanism 26 at the feeding station 111. The third tensioning mechanism 26 is a cylinder. The end of the third tensioning mechanism 26 protrudes to form a hook shape, which can hook the roller 65 on the push plate 61 and pull the push plate 61 away from the stop block 62.

[0044] In the feeding of the distributor 12, the dispersed distributors 12 are arranged neatly on the guide mechanism 23 by the vibrating feeding tray 21. Then, the first sliding cylinder 223 drives the rotary cylinder 221 to slide towards the distributor 12 on the guide mechanism 23. Then, the two output shafts of the third gripper cylinder 222 clamp the distributor 12 on the conveying mechanism. Then, the rotary cylinder 221 drives the distributor 12 to rotate, so that the distributor 12 lies flat on the horizontal surface. At the same time, the third stretching mechanism 26 pulls the pusher. Plate 61 slides away from stop 62, causing telescopic spring 63 to extend. Then, feeding sliding frame 24 drives fourth gripper cylinder 25 to clamp the distributor 12 and place it on insulating platform 64, so that stop 62 is inserted into distributor 12 and fits against distributor 12. Then, third tensioning mechanism 26 moves toward stop 62, and telescopic spring 63 pulls push plate 61 to slide toward stop 62, so that distributor 12 is locked in groove 613, completing the batch feeding of distributor 12 and improving the convenience of feeding distributor 12.

[0045] Reference Figure 4 , Figure 5 In this embodiment, the pin conveying unit 3 includes a reciprocating moving frame 31, a clamping conveying wheel set 32, and a cutting mechanism 33. The reciprocating moving frame 31 includes a linear moving mechanism 311 and a support frame 312. The linear moving mechanism 311 is mounted on the frame 1, and the support frame 312 is fixedly mounted on the output shaft of the linear moving mechanism 311. The linear moving mechanism 311 drives the support frame 312 to move closer to or away from the rotating platform 11. The clamping conveying wheel set 32 ​​and the cutting mechanism 33 are both mounted on the support frame 312. Multiple sets of clamping conveying wheel sets 32 are arranged radially along the rotating platform 11. Each set of clamping conveying wheel sets 32 includes two clamping wheels 321. The two clamping wheels 321 can clamp the pin wire 81 and drive the clamping wheels 321 to rotate through a motor, continuously moving the pin wire 81 toward the rotating platform 11. The cutting mechanism 33 can cut the pin wire 81 into short pins 82.

[0046] Reference Figure 4 , Figure 5In this embodiment, the welding unit 7 includes a first terminal 71 and a second terminal 72. The first terminal 71 includes two clamping blocks 711 arranged vertically. The clamping blocks 711 are made of conductive material. The lower clamping block 711 is fixedly mounted on the support frame 312. The support frame 312 is fixedly mounted with a clamping cylinder 712 above the clamping blocks 711. The output shaft of the clamping cylinder 712 is set downwards. The upper clamping block 711 is fixedly connected to the output shaft of the clamping cylinder 712, and the clamping block 711 and the clamping cylinder 712 are also fixedly connected. The output shafts are insulated from each other by an insulating plate. Each of the two clamping blocks 711 has a clamping groove 713 on its opposite side. Each clamping groove 713 passes through the opposite side wall of the same clamping block 711. The pin 82 can be inserted into the clamping groove 713 and clamped and fixed by the two clamping grooves 713. One of the clamping blocks 711 is electrically connected to a single pole of an external power supply through a wire. In this embodiment, the positive pole of the power supply is selected. When the clamping block 711 clamps the pin 82, a path is formed between the pin 82 and the clamping block 711.

[0047] Reference Figures 4-8 The cutting mechanism 33 is located between the clamping block 711 and the clamping wheel 321. In this embodiment, the cutting mechanism 33 includes a cutter 331 and a feed wheel assembly 332. The cutter 331 is located between the feed wheel assembly 332 and the clamping wheel 321. A vertically downward cutting cylinder 333 is fixedly mounted on the support frame 312. The cutter 331 is fixedly mounted on the output shaft of the cutting cylinder 333, with the blade facing the lead wire 81. A cutting table 334 is provided on the support frame 312 at the position directly opposite the cutter 331. The lead wire 81 is placed on the cutting table 334, and the blade of the cutter 331 presses the lead wire 82 against the cutting table 334 for cutting.

[0048] Reference Figure 5 , Figure 6 In this embodiment, the feed wheel assembly 332 includes two feed wheels 3321 arranged vertically. Each feed wheel 3321 is rotatably connected to the support frame 312 via a gear shaft 335. Both feed wheels 3321 have annular grooves 3322 on their peripheral surfaces. The pin 82 can be inserted into the two annular grooves 3322 and abut against the feed wheel 3321. The cutter 331 is connected to the feed wheel 3321 via a transmission component 336. The cutter 331 can drive the feed wheel 3321 to rotate, causing the pin 82 to extend out of the clamping block 711.

[0049] Reference Figure 5 , Figure 6In this embodiment, the transmission component 336 includes a drive gear 3361 and a drive rack 3362 that mesh with each other. The drive rack 3362 is fixedly mounted on the cutter 331 along the sliding direction of the cutter 331. The drive gear 3361 is coaxially rotatably mounted on the gear shaft 335 and engages with the feed wheel 3321. The drive gear 3361 has four sliding grooves 3363 on its end face facing the feed wheel 3321. The four sliding grooves 3363 are spaced 90° apart along the circumference of the drive gear 3361. The drive gear 3361 is arranged in a manner such that a push block 3364 is slidably provided in each sliding groove 3363. The push block 3364 slides along the axial direction of the drive gear 3361 in the sliding groove 3363. Each sliding groove 3363 is provided with a support spring 3365. One end of the support spring 3365 is fixedly connected to the push block 3364, and the other end is fixedly connected to the bottom wall of the sliding groove 3363. The support spring 3365 applies a thrust toward the feed wheel 3321 to the push block 3364.

[0050] Reference Figure 6 , Figure 7 and Figure 8 The feed wheel 3321 is provided with slots 3366 for inserting push blocks 3364. Each slot 3366 corresponds to a push block 3364. When a push block 3364 is inserted into a slot 3366, it pushes the feed wheel 3321 to rotate by pressing against the side wall of the slot 3366. A sliding surface 3367 is provided on the side wall of the slot 3366. The sliding surface 3367 is an arc-shaped surface that mates with the rotation of the push block 3364. The sliding surface 3367 is positioned in relation to the push block 3364. The sidewall of the slot 3366, which is pressed by 364, faces the sidewall. The sliding surface 3367 is inclined from the bottom wall of the slot 3366 toward the opening of the slot 3366, so that the push block 3364 can slide out of the slot 3366 along the sliding surface 3367. During the working process of the cutting cylinder 333 driving the cutter 331 to extend, the cutter 331 drives the drive gear 3361 to rotate N*90° (N is an integer), so that the push block 3364 is inserted into the slot 3366.

[0051] Reference Figure 6 , Figure 7 and Figure 8The feed wheel 3321 has a limiting groove 3371 on its end face away from the drive gear 3361. There are four limiting grooves 3371, which are arranged at 90° intervals along the circumference of the feed wheel 3321. The support frame 312 is provided with a limiting frame 3372, which is provided with four limiting blocks 3373. The limiting frame 3372 has four limiting grooves 3374 on the side facing the feed wheel 3321. The limiting grooves 3374 correspond one-to-one with the limiting blocks 3373. The limiting blocks 3373 slide into the limiting grooves 3374. Each limiting groove 3374 is provided with a limiting spring 3375. One end of the limiting spring 3375 is fixedly connected to the limiting block 3373, and the other end is fixedly connected to the bottom wall of the limiting groove 3374. The limiting spring 3375 applies an initial elastic force to the limiting block 3373 towards the feed wheel 3321. The limiting block 3373 corresponds one-to-one with the limiting groove 3371 and can be inserted into the limiting groove 3371, so that the feed wheel 3321 rotates in one direction. The limiting groove 3371 has a guide surface 3376 on its side wall. The orientation of the guide surface 3376 is opposite to that of the sliding surface 3367. When the push block 3364 slides along the sliding surface 3367, the limiting block 3373 abuts against the bottom of the limiting groove 3371, so that the feed wheel 3321 remains stationary. When the push block 3364 pushes the feed wheel 3321 to rotate, the limiting block 3373 slides out of the limiting groove 3371 along the guide surface 3376.

[0052] Reference Figure 4 The second terminal 72 includes a reciprocating cylinder 721 and a pressure block 723. The reciprocating cylinder 721 is located at the welding station 112 of the frame 1, with its output shaft facing downwards. The pressure block 723 is fixedly mounted on the output shaft of the reciprocating cylinder 721. The pressure block 723 and the output shaft of the reciprocating cylinder 721 are insulated from each other by an insulating plate. The reciprocating cylinder 721 drives the pressure block 723 to press against the copper base 612, forming a passage with the copper base 612. Electrically connected to the negative terminal of an external power source via a wire, when the pressure block 723 is pressed onto the copper base 612, a path is formed between the copper base 612 and the shunt 12. The linear moving mechanism 311 presses the pin 82 against the shunt 12. When current flows through the connection between the shunt 12 and the pin 82, the temperature rises due to the high resistance at that point. When heated to a plastic state, the pin 82 is connected as one unit under axial pressure, thus completing the welding between the pin 82 and the shunt 12.

[0053] When soldering pin 82 to shunt 12, rotating platform 11 moves shunt 12 to soldering station 112. Then, clamping wheel 321 moves the end of pin 81 into clamping groove 713 of clamping block 711. Then, cutting cylinder 333 moves cutter 331 toward pin 81 to cut pin 81 and form pin 82. During the cutting movement of cutter 331, cutter 331 drives drive gear 3361 to rotate through drive rack 3362. Drive gear 3361 drives push block 3364 to slide out of slot 3366 along sliding surface 3367. Therefore, when cutter 331 is cutting pin 81, feed wheel 3321 remains stationary. When the cutting cylinder 333 drives the cutter 331 away from the cutting platform, the drive gear 3361 pushes the feed wheel 3321 to rotate through the push block 3364. At this time, the limiting block 3373 slides out of the limiting groove 3371 along the guide surface 3376. The feed wheel 3321 pushes the pin 82 to extend out of the two clamping blocks 711. Then the feed wheel 3321 drives the pin 82 to move towards the distributor 12, so that the cutter 331 drives the pin 82 to slide, reducing the use of the power mechanism and improving the coordination between the movement of the pin 82 and the sliding of the cutter 331.

[0054] Then, the reciprocating cylinder 721 drives the pressure block 723 to press against the copper base 612, and then the linear moving mechanism 311 drives the pin 82 to press against the end of the shunt 12, realizing the welding between the pin 82 and the shunt 12.

[0055] Reference Figure 9 In this embodiment, the detection unit 4 includes a clamping and moving mechanism 41, a detection clamping mechanism 42, and a resistance detector 43. The clamping and moving mechanism 41 in this embodiment includes a spatial moving frame 411 and a first gripper cylinder 412. The first gripper cylinder 412 is mounted on the spatial moving frame 411. The two output shafts of the first gripper cylinder 412 can be inserted into the first clamping groove 661 and the second clamping groove 662 to clamp the distributor 12. The spatial moving frame 411 drives the first gripper cylinder 412 to move and disengage from the rotating platform 11 to unload the distributor 12.

[0056] Reference Figure 9The detection clamping mechanism 42 includes a mechanical frame 421 and a fifth gripper cylinder 422. The fifth gripper cylinder 422 is mounted on the mechanical frame 421. Each of the two output shafts of the fifth gripper cylinder 422 has two detection ends 423. The four detection ends 423 are arranged in pairs facing each other. The two opposing detection ends 423 are connected to the positive terminal of the resistance detector 43, and the other two detection ends 423 are connected to the negative terminal of the resistance detector 43. The fifth gripper cylinder 422 drives the two positive detection ends 423 to clamp one pin 82, and the two negative detection ends 423 to clamp another pin 82. A first tensioning mechanism 44 is provided on the frame 1, opposite to the detection clamping mechanism 42. The first tensioning mechanism 44 is used to drive the push plate 61 away from the stop block 62.

[0057] If the soldering of pin 82 is not up to standard, the first tensioning mechanism 44 pulls the push plate 61 away from the stop block 62, and the first gripper cylinder 412 clamps the distributor 12 and moves it to one side of the rotating platform 11 for unloading.

[0058] When inspecting the welding condition of the shunt 12 and pin 82, the fifth gripper cylinder 422 drives the two positive detection terminals 423 to clamp one pin 82 and the two negative detection terminals 423 to clamp the other pin 82. Then, the reading of the resistance detector 43 is used to determine whether the welding of pin 82 is qualified. If the welding of pin 82 is unqualified, the first tensioning mechanism 44 pulls the push plate 61 away from the stop block 62, and the first gripper cylinder 412 clamps the shunt 12 and moves it to one side of the rotating platform 11 for unloading. If the welding of pin 82 is qualified, the rotating platform 11 drives the shunt 12 to the unloading station 114 for marking, thereby completing the inspection of the welding quality of the shunt 12 and pin 82 and improving the inspection efficiency of the welding quality of pin 82 on the shunt 12.

[0059] Reference Figure 10 , Figure 11In this embodiment, the marking and unloading unit 5 includes a laser marking machine 51, an unloading moving mechanism 52, and a second gripper cylinder 53. The laser marking machine 51 is connected to the frame 1 via a reciprocating mechanism 54. Driven by the reciprocating mechanism 54, the laser marking machine 51 can move toward or away from the distributor 12 and can make contact with the distributor 12 for marking. The frame 1 is provided with a second tensioning mechanism 55, which is arranged opposite to the unloading moving mechanism 52 and is used to pull the push plate 61 away from the stop block 62. In this embodiment, the unloading moving mechanism 52 consists of a rotary motor 56 and a second sliding cylinder 57. The second sliding cylinder 57 is mounted on the frame 1, and the rotary motor 56 is mounted on the output shaft of the second sliding cylinder 57. The second sliding cylinder 57 drives the rotary motor 56 to slide closer to or further away from the rotating platform 11. The second gripper cylinder 53 is mounted on the output shaft of the rotary motor 56. The rotary motor 56 drives the second gripper cylinder 53 to rotate, and the second gripper cylinder 53 can clamp the welding end of the distributor 12.

[0060] The welded distributor 12 moves to the unloading station 114 along with the rotating platform 11. Then, the reciprocating mechanism 54 drives the laser marking machine 51 to mark the distributor 12. Then, the second stretching mechanism 55 pulls the push plate 61 away from the stop block 62. The sliding cylinder and the rotating motor 56 drive the second gripper cylinder 53 to clamp and move the distributor 12 and unload it, which facilitates the unloading and marking of the distributor 12.

[0061] The implementation principle of the welding device for a precision distributor according to an embodiment of this application is as follows: The disordered distributor 12 is placed in the vibrating feeding tray 21, then tidied up and guided to the feeding station 111 by the guiding mechanism 23. Then, the first sliding cylinder 223 and the rotating cylinder 221 drive the third gripper cylinder 222 to pick up the distributor 12. Then, the feeding sliding frame 24 drives the fourth gripper cylinder 25 to clamp the distributor 12 and move it to the insulating platform 64. Then, the third tensioning mechanism 26 slides towards the stop block 62, and the telescopic spring 63 pulls the copper base 612 to clamp the distributor 12 in the groove 613. Then, the distributor 12 is moved to each station by the rotating platform 11.

[0062] The rotating platform 11 moves the splitter 12 to the welding station 112. The pin 82 is conveyed to the splitter 12 through the pin conveying unit 3. The pressure block 723 is pressed on the copper base 612 and energized to weld the pin 82 to the splitter 12. The two pins 82 are welded through two welding stations 112. The fifth gripper cylinder 422 drives the two positive detection terminals 423 to clamp one pin 82, and the two negative detection terminals 423 to clamp the other pin 82. Then, the reading of the resistance detector 43 is used to determine whether the welding of the pin 82 is qualified. If the welding of the pin 82 is not qualified, the first tensioning mechanism 44 pulls the push plate 61 away from the stop block 62, and the first gripper cylinder 412 clamps the shunt 12 and moves it to one side of the rotating platform 11 for unloading. If the welding of the pin 82 is qualified, the rotating platform 11 drives the shunt 12 to move to the unloading station 114.

[0063] The reciprocating mechanism 54 drives the laser marking machine 51 to mark the distributor 12. Then, the second stretching mechanism 55 pulls the push plate 61 away from the stop block 62. The second sliding cylinder 57 and the rotary motor 56 drive the second gripper cylinder 53 to clamp and move the distributor 12 and unload it. This allows the welding and unloading of the distributor 12 to be carried out at different stations, improving the welding efficiency of the distributor 12 and making it suitable for batch welding of the distributor 12.

[0064] On the other hand, the welding method for a precision shunt also provided in this application adopts the following technical solution: A method for welding a precision shunt, using the welding apparatus for the precision shunt, includes the following steps: S1. Loading: Place the disordered distributor 12 into the vibrating loading tray 21, then tidy it up and guide it to the loading station 111 through the guiding mechanism 23. Then, the first sliding cylinder 223 and the rotating cylinder 221 drive the third gripper cylinder 222 to pick up the distributor 12. Then, the loading sliding frame 24 drives the fourth gripper cylinder 25 to clamp the distributor 12 and move it to the insulating platform 64. Then, the third tensioning mechanism 26 slides towards the stop block 62, and the telescopic spring 63 pulls the copper base 612 to clamp the distributor 12 in the groove 613. Then, the rotating platform 11 drives the distributor 12 to move to each station.

[0065] S2. Welding: The rotating platform 11 moves the shunt 12 to the welding station 112. The pin 82 is conveyed to the shunt 12 through the pin conveying unit 3. The pressure block 723 is pressed on the copper base 612 and energized to weld the pin 82 to the shunt 12. The two pins 82 are welded through two welding stations 112.

[0066] S3. Inspection: The fifth gripper cylinder 422 drives the two positive detection terminals 423 to clamp one pin 82 and the two negative detection terminals 423 to clamp the other pin 82. Then, the reading of the resistance detector 43 is used to determine whether the welding of the pin 82 is qualified. If the welding of the pin 82 is not qualified, the first tensioning mechanism 44 pulls the push plate 61 away from the stop block 62. The first gripper cylinder 412 clamps the shunt 12 and moves it to one side of the rotating platform 11 for unloading. If the welding of the pin 82 is qualified, the rotating platform 11 drives the shunt 12 to move to the unloading station 114.

[0067] S4. Marking and unloading: The reciprocating mechanism 54 drives the laser marking machine 51 to mark the distributor 12. Then, the second stretching mechanism 55 pulls the push plate 61 away from the stop block 62. The second sliding cylinder 57 and the rotating motor 56 drive the second gripper cylinder 53 to clamp and move the distributor 12 and unload it.

[0068] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A welding apparatus for a precision shunt, characterized in that: The device includes a rotating platform (11) rotatably mounted on a frame (1). The frame (1) is equipped with a feeding unit (2), a pin conveying unit (3), a detection unit (4), and a marking and unloading unit (5). The rotating platform (11) is equipped with multiple clamping units (6) for clamping the distributor (12). The rotating platform (11) is used to drive the clamping units (6) to circulate among the feeding unit (2), the pin conveying unit (3), the detection unit (4), and the marking and unloading unit (5). (2) is used to install the splitter (12) onto the clamping unit (6), the pin conveying unit (3) conveys the pin (82) onto the splitter (12), and the welding unit (7) welds the splitter (12) to the pin (82), the detection unit (4) is used to detect whether the welding of the pin (82) is qualified, and to remove the splitter (12) with unqualified welding from the clamping unit (6), the marking and unloading unit (5) is used to mark the splitter (12) with qualified welding, and to unload and collect the material; The pin conveying unit (3) includes a reciprocating moving frame (31), a clamping conveying wheel set (32), and a cutting mechanism (33). The clamping conveying wheel set (32) and the cutting mechanism (33) are both mounted on the reciprocating moving frame (31). Each clamping conveying wheel set (32) includes two clamping wheels (321). The two clamping wheels (321) can clamp the pin wire (81) and continuously convey the pin wire (81) to the cutting mechanism (33). The cutting mechanism (33) can cut the pin wire (81) into short pins (82). The welding unit (7) includes a first terminal (71) and a second terminal (72). The first terminal (71) is disposed on the reciprocating moving frame (31) and can contact the pin (82) to form a passage. The second terminal (72) is disposed on the frame (1) and can contact the shunt (12) to form a passage. The reciprocating moving frame (31) is used to drive the pin (82) to abut against the shunt (12) to form a passage. The cutting mechanism (33) includes a cutter (331) and a feed wheel assembly (332). A cutting cylinder (333) is provided on the reciprocating frame (31). The cutter (331) is located on the output shaft of the cutting cylinder (333) and can cut the lead wire (81). The feed wheel assembly (332) includes two feed wheels (3321) rotatably mounted on the reciprocating frame (31). The two feed wheels (3321) can clamp the lead wire (82). The cutter (331) and the feed wheels (3321) are connected by a transmission component (336). The cutter (331) can drive the feed wheels (3321) to rotate, so that the lead wire (82) extends out of the first terminal (71). The transmission component (336) includes a meshing drive gear (3361) and a drive rack (3362). The drive rack (3362) is mounted on the cutter (331). The drive gear (3361) is rotatably mounted on the reciprocating frame (31) and coaxial with the feed wheel (3321). The drive gear (3361) has a push block (3364) slidingly mounted along its own axial direction. The feed wheel (3321) has a slot (3366) for inserting the push block (3364). The push block (3364) is used to push the feed wheel (3321) to rotate. The side wall of the slot (3366) has... The device has a sliding surface (3367) and the push block (3364) can slide out of the slot (3366) along the sliding surface (3367). The end face of the feed wheel (3321) is provided with a limiting groove (3371). A limiting block (3373) for inserting into the limiting groove (3371) is slidably provided on the reciprocating moving frame (31). A guide surface (3376) is provided on the side wall of the limiting groove (3371). The limiting block (3373) can slide out of the limiting groove (3371) along the guide surface (3376). The limiting block (3373) is used to limit the feed wheel (3321) from rotating toward the cutter (331). When the cutter (331) cuts the pin (81) during the process, the feed wheel (3321) remains stationary. When the cutter (331) returns from the cut, the feed wheel (3321) drives the pin (82) to move toward the splitter (12).

2. The welding apparatus for the precision shunt according to claim 1, characterized in that: The clamping unit (6) includes a push plate (61), a stop (62), and a telescopic spring (63). The push plate (61) is slidably disposed on the rotating platform (11). The stop (62) is disposed on the rotating platform (11) and opposite to the push plate (61). The diverter (12) is located between the stop (62) and the push plate (61). One end of the telescopic spring (63) is connected to the push plate (61), and the other end is connected to the rotating platform (11), and is used to push the diverter (12) against the stop (62).

3. The welding apparatus for the precision shunt according to claim 2, characterized in that: The detection unit (4) includes a clamping and moving mechanism (41), a detection clamping mechanism (42), and a resistance detector (43). The clamping and moving mechanism (41) is used to clamp the unloading of the shunt (12). The detection clamping mechanism (42) is provided with a detection end (423) electrically connected to the resistance detector (43). The detection clamping mechanism (42) is used to drive the detection end (423) to fit with the pin (82) to form a passage. The frame (1) is provided with a first stretching mechanism (44). The first stretching mechanism (44) is opposite to the detection clamping mechanism (42). The first stretching mechanism (44) is used to drive the push plate (61) away from the stop block (62). If the pin (82) is not properly soldered, the clamping and moving mechanism (41) drives the distributor (12) to move to one side of the rotating platform (11) for unloading.

4. The welding apparatus for the precision shunt according to claim 3, characterized in that: The clamping and moving mechanism (41) includes a spatial moving frame (411) and a first gripper cylinder (412). The first gripper cylinder (412) is mounted on the spatial moving frame (411) and is capable of clamping the distributor (12).

5. The welding apparatus for the precision shunt according to claim 4, characterized in that: The push plate (61) is provided with a first clamping groove (661) that extends through to the side wall of the distributor (12), and the stop block (62) is provided with a second clamping groove (662) that extends through to the side wall of the distributor (12). The first clamping groove (661) and the second clamping groove (662) are opposite to each other. The two output shafts of the first gripper cylinder (412) can be inserted into the first clamping groove (661) and the second clamping groove (662) respectively.

6. The welding apparatus for the precision shunt according to claim 3, characterized in that: The marking and unloading unit (5) includes a laser marking machine (51), an unloading moving mechanism (52), and a second gripper cylinder (53). The laser marking machine (51) is connected to the frame (1) via a reciprocating mechanism (54). The laser marking machine (51) can move toward or away from the distributor (12) under the drive of the reciprocating mechanism (54) and can make contact with the distributor (12) for marking. The frame (1) is provided with a second tensioning mechanism (55). The second tensioning mechanism (55) is arranged opposite to the unloading moving mechanism (52) and is used to pull the push plate (61) away from the stop block (62). The second gripper cylinder (53) is arranged on the unloading moving mechanism (52) and is used to clamp the distributor (12). The unloading moving mechanism (52) is used to drive the distributor (12) to move and unload.

7. A method for welding a precision shunt, using the welding apparatus for a precision shunt as described in any one of claims 1-6, characterized in that: The steps include the following: S1. Loading: Load the distributor (12) onto the clamping unit (6) on the rotating platform (11) through the loading unit (2), and then move the distributor (12) to each station through the rotating platform (11); S2, Welding: The rotating platform (11) moves the splitter (12) to the welding station (112). The pins (82) are conveyed to the splitter (12) through the pin conveying unit (3). Then, the pins (82) are welded to the splitter (12) through the welding unit (7). The two pins (82) are welded through two welding stations (112). S3, Inspection: The welding quality of the pins (82) of the shunt (12) is inspected by the inspection unit (4). If the quality is not qualified, it is directly unloaded. If the quality is qualified, it is moved to the next station by the rotating platform (11). S4. Marking and unloading: Mark the qualified diverter (12) and unload it for collection.

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