A device and method for aligning and welding a circuit board

Abstract

The present application relates to the technical field of circuit board welding equipment, in particular to a kind of alignment welding device and method for circuit board processing, mainly including rack, the inside of the rack is equipped with welding frame, welding head is installed on welding frame, welding frame can drive welding head to move in space along left and right, up and down, front and back, welding head is equipped with visual positioning system, the below of welding frame is equipped with bearing table. Through the worm and gear motor driving of bearing table in carrying mechanism overturn, cooperate the double-station design of carrying mechanism, station and waiting position, without manual removal circuit board can complete double-sided welding turnover operation, avoid the secondary positioning deviation caused by manual turnover;Meanwhile, carrying mechanism can synchronously fix two circuit boards, when welding frame is welded to station circuit board, waiting position can synchronously complete discharging, feeding operation, greatly reduce the time loss of discharging and feeding, solve the problem of low efficiency of existing single-station equipment, realize continuous production, significantly improve the processing amount in unit time.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of circuit board welding equipment, in particular to a positioning welding device and method for circuit board processing. BACKGROUND

[0002] In the field of circuit board processing, the mainstream welding equipment includes wave soldering equipment, reflow soldering equipment and manual soldering auxiliary tooling. The wave soldering equipment transports the circuit board through a chain conveyor, completes processing through flux coating, preheating and solder wave soldering. The reflow soldering equipment realizes solder paste melting and soldering through multi-temperature zone heating. The manual soldering auxiliary tooling realizes the positioning and fixation of the circuit board by means of positioning pins or a pressing mechanism.

[0003] However, when the existing equipment is used for welding double-sided circuit boards, the circuit board with one side welded needs to be manually taken out from the equipment, turned over and repositioned and clamped, which not only interrupts the continuous operation of the equipment, but also easily causes secondary positioning deviation of the circuit board due to manual operation errors, affecting the welding quality. Moreover, the single-station setting consumes a large amount of time in the feeding and discharging process, and the production efficiency is limited. At the same time, the specification adaptability is poor. When facing circuit boards with a high surface component, the carrying space of the equipment cannot be quickly adjusted, and the circuit board is easily interfered with the equipment components during the conveying or clamping process, causing feeding jam.

[0004] Therefore, it is urgent to design a positioning welding device for circuit board processing to solve the above problems. SUMMARY

[0005] The present application aims to provide a positioning welding device and method for circuit board processing to solve the problems of manual taking out, turning over and repositioning and clamping of double-sided circuit boards, easy interruption of equipment operation and positioning deviation, single-station setting leading to long feeding and discharging time and low efficiency, and the carrying space being unable to be quickly adjusted when facing high component circuit boards, which easily causes feeding jam.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] The application discloses a kind of line board processing alignment welding device, including: rack, welding frame is equipped inside the rack, welding head is installed on welding frame, welding frame can drive welding head to move in space along left and right, up and down, front and back, welding head is equipped with visual positioning system, the lower portion of welding frame is equipped with bearing table, the left side of bearing table is equipped with feeding table, the right side of bearing table is equipped with discharging table, bearing table is installed with carrying mechanism, clamping mechanism is installed inside carrying mechanism, one end of carrying mechanism is installed with positioning mechanism, pneumatic system is installed on the top of rack, pneumatic system is communicated with clamping mechanism, line board is accurately entered carrying mechanism by feeding table, the position of line board in carrying mechanism is limited by positioning mechanism, clamping mechanism is actuated by pneumatic system, line board is stably clamped in carrying mechanism by clamping mechanism, two line boards can be fixed on carrying mechanism simultaneously, one faces upwards, and its position is working position, the other faces downwards, and its position is waiting position, bearing table is used for turning over two line boards, for transferring welded line board from working position to waiting position, transferring line board to be welded to working position, welded line board on waiting position can enter discharging table, it is convenient to take out welded line board, adapter is equipped on rack and welding frame, and the position height of adapter is used for monitoring carrying mechanism and welding frame.

[0008] Preferably, the rack includes a base plate, a support vertical plate is fixedly connected to the top surface of the base plate, a support top plate is fixedly installed at the top end of the support vertical plate, an installation panel is fixedly installed at the front end of the support top plate, and an integrated controller is fixedly installed on the surface of the installation panel.

[0009] Preferably, the welding frame includes two longitudinal beams, the two longitudinal beams are symmetrically fixedly installed on the bottom surface of the support top plate, a welding head is installed at the bottom of each longitudinal beam, a protruding plate is fixedly installed at each side end of the two longitudinal beams, a longitudinal motor is bolted to the outer side of each protruding plate, a longitudinal screw rod is fixedly connected to the output shaft of the longitudinal motor, the longitudinal screw rod is movably inserted into the protruding plate, a cross beam is threadedly fitted on the longitudinal screw rod, a vertical plate is fixedly connected to each end of the top surface of the cross beam, a transverse motor is bolted to the outer side of one vertical plate, a transverse screw rod is fixedly connected to the output shaft of the transverse motor, the transverse screw rod is movably inserted into the vertical plate, a T-shaped base is threadedly fitted on the transverse screw rod, a vertical telescopic rod is fixedly inserted into the T-shaped base, and the bottom end of the inner extending rod of the vertical telescopic rod is fixedly connected to the top surface of the welding head.

[0010] Preferably, the bearing table comprises a thin plate and a thick plate, the thin plate and the thick plate are arranged in parallel and alignment, both end faces of the thin plate are fixedly connected with a fixing strip at the middle part, both ends of the thick plate are fixedly connected with two fixing strips respectively, the outer side of the thin plate is fixedly connected with a driving shaft, the outer side of the thick plate is fixedly connected with a driven shaft, the outer part of the driving shaft and the driven shaft is movably sleeved with a hanging plate, the top end of the two hanging plates is fixedly connected with the middle part of the bottom surface of the two longitudinal beams respectively, the outer side of one hanging plate is bolted with a worm gear motor, the output shaft of the worm gear motor is hollow, the output shaft of the worm gear motor is fixedly sleeved on the outer part of the driving shaft, the end part of the driven shaft is provided with an angle encoder, the angle encoder is fixedly installed on the outer side of the other hanging plate, the outer part of the driven shaft is sleeved with a rotary electrical connector between the thick plate and the hanging plate, the outer part of the driving shaft and the driven shaft is fixedly sleeved with a bearing, the bearing is embedded on the hanging plate, the outer side of the fixing strip is fixedly connected with a scale at the middle part.

[0011] Preferably, the feeding table and the discharging table each comprise four table legs, the table legs are fixedly installed on the top surface of the base plate, the top surface of the table top is fixedly connected with two limiting strips, the limiting strips are located at the edge of the top surface of the table top and extend along the length direction of the table top, both sides of the two limiting strips away from each other are provided with a limiting groove, the top surface of the limiting strip away from the rack is provided with an opening hole, and the opening hole is communicated with the limiting groove.

[0012] Preferably, the object carrying mechanism comprises four object carrying wall plates, the four object carrying wall plates are arranged on the upper and lower surfaces of the two fixing strips respectively, the end part of the four object carrying wall plates is provided with a positioning mechanism, the two object carrying wall plates on the same side of the fixing strip are a group and jointly play a role of carrying the same circuit board, the height value of the object carrying wall plate is greater than half of the height value of the thin plate, the inner side of the object carrying wall plate away from the fixing strip is provided with an object carrying slot, the object carrying slot is aligned with the limiting groove, the inner wall end part of the object carrying slot away from the fixing strip is provided with a chamfered slope, the surface end part of the object carrying wall plate in contact with the surface of the fixing strip is provided with a guide hole, a guide column is slidably inserted into the guide hole, the other end of the guide column is fixedly connected with the surface of the fixing strip, the middle part of the surface of the object carrying wall plate in contact with the surface of the fixing strip is provided with a containing channel, the other end of the containing channel penetrates through the object carrying wall plate, the surface of the object carrying wall plate away from the fixing strip is provided with a countersunk groove, an adjusting screw is movably inserted into the containing channel, the other end of the adjusting screw is fixedly connected with the surface of the fixing strip, an internally threaded tube is movably inserted into the containing channel, the internally threaded tube is threadedly sleeved on the outer part of the adjusting screw, the free end of the internally threaded tube extends into the inside of the countersunk groove and is fixedly connected with a rotating cap, the rotating cap is movably inserted into the countersunk groove, the other end surface of the rotating cap is provided with a cross slot, the inner wall of the countersunk groove is provided with a thread, a compression ring is threadedly mounted in the inside of the countersunk groove, the compression ring limits the rotating cap in the inside of the countersunk groove, and the inner wall of the compression ring is provided with a gear slot.

[0013] Preferably, the clamping mechanism includes an air cavity, which is arranged on the surface of the object carrying wall plate in contact with the fixing strip and is staggered with the guide hole and the accommodating channel. A plurality of piston channels are arranged on the inner wall of the air cavity at equal distances. The other end of the piston channel is in communication with the object carrying slot. An installation groove in communication with the air cavity is arranged on the surface of the object carrying wall plate in contact with the fixing strip. A sealing plate is bolted in the installation groove. A sealing ring is arranged between the sealing plate and the inner wall of the installation groove to seal the opening of the air cavity. A plurality of return springs are fixedly installed at equal distances on the surface of the sealing plate close to the air cavity. The other end of the return spring is fixedly connected with a piston rod. The return spring and the piston rod are movably inserted into the piston channel. An annular groove is arranged on the surface of the piston rod. A sealing ring is embedded in the annular groove. The sealing ring slides in the piston channel. The end of the piston rod extends into the object carrying slot and is fixedly connected with a clamping strip. The clamping strip is in contact with the inner wall of the object carrying slot. The other side of the clamping strip is fixedly connected with an elastic pad, which can clamp the circuit board without damage. A constant pressure hole is arranged on the inner wall of the air cavity at one corner thereof. The constant pressure hole is in communication with the pneumatic system.

[0014] Preferably, the pneumatic system includes a constant pressure cylinder and a foot switch. The constant pressure cylinder is fixedly connected to the outer side of the thin plate and is fixedly sleeved on the outer surface of the drive shaft. Four constant pressure pipes are fixedly connected to the outer side of the constant pressure cylinder. The other end of the constant pressure pipe is fixedly inserted into the inner part of the constant pressure hole and is in communication with the air cavity. Three-way valve one is fixedly connected to the constant pressure pipe corresponding to one group of object carrying wall plates. Three-way valve two is fixedly connected to the constant pressure pipe corresponding to the other group of object carrying wall plates. The drive shaft is hollow and is in communication with the constant pressure cylinder. A rotary connector is fixedly installed at the end of the drive shaft. A gas conveying elbow is fixedly connected to the other end of the rotary connector. A gas pump is fixedly installed on the top surface of the support top plate. The foot switch is placed on the top surface of the base plate.

[0015] Preferably, the positioning mechanism includes a positioning hole and a fixed flat box. The positioning hole is arranged on the end of the object carrying wall plate away from the surface of the fixing strip. The fixed flat box is bolted on the surface of the object carrying wall plate and is in communication with the positioning hole. An upper protruding column is fixedly connected to the top surface of the inner cavity of the fixed flat box. A traction spring is fixedly sleeved on the outer part of the upper protruding column. A lower protruding column is fixedly sleeved on the bottom end of the traction spring. A positioning plate is fixedly connected to the bottom end of the lower protruding column. The positioning plate is movably inserted into the positioning hole. The end surface of the positioning plate is flush with the inner wall of the object carrying slot. An extension rod one is fixedly connected to the top surface of the positioning plate. A fixed hole is arranged on the top surface of the fixed flat box. The extension rod one is fixedly inserted into the fixed hole.

[0016] Preferably, the adapter comprises telescopic rod two, mounting base plate and distance sensor two, one end of telescopic rod two is fixedly connected on the top surface of the longitudinal beam, the other end of telescopic rod two is fixedly connected on the bottom surface of the support top plate, the mounting base plate is fixedly connected on the left side surface of the support top plate, the bottom surface of the mounting base plate is fixedly connected with distance sensor one, distance sensor two is fixedly connected on the top surface of the base plate and is aligned with one object wall plate.

[0017] Preferably, a line plate processing alignment welding method comprises the following steps:

[0018] The first step: the storage rack for stacking the line plate to be welded is placed near the feeding table, the storage rack for stacking the welded line plate is placed near the discharging table, and the equipment is started through the integrated controller;

[0019] The second step: the pedal switch is stepped on, the welded line plate is pushed into the discharging table from the object slot, and the welded line plate is taken out and placed on the storage rack;

[0020] The third step: the pedal switch is stepped on again, the line plate to be welded is placed in the opening hole of the feeding table, and the line plate is pushed to the right so that the line plate slides into the object slot along the limiting groove until the line plate abuts against the positioning plate;

[0021] The fourth step: the pedal switch is stepped on for the third time, the clamping mechanism is driven by the pneumatic system to clamp the line plate to be welded, and the welding frame subsequently welds the line plate to be welded;

[0022] The fifth step: steps two, three and four are repeated to realize the cyclic operation.

[0023] Compared with the prior art, the beneficial effects of the present application are:

[0024] The object mechanism is flipped by the worm gear motor in the bearing table, the double-station design of the object mechanism is matched, the station and the waiting station are matched, the line plate can be taken out without manual operation to complete the double-sided welding and turning operation, the secondary positioning deviation caused by manual turning is avoided, meanwhile, the object mechanism can synchronously fix two line plates, when the welding frame welds the line plate in the station, the waiting station can synchronously complete the discharging and feeding operation, the discharging and feeding time loss is greatly reduced, the low efficiency problem of the existing single-station equipment is solved, the continuous production is realized, and the processing amount per unit time is significantly improved.

[0025] The position of the line plate in the object slot is accurately limited by the positioning plate in the positioning mechanism, the elastic pad in the clamping mechanism forms stable clamping on the line plate by matching the action of the pneumatic system driven clamping mechanism, and the line plate is prevented from deviating in the welding process; meanwhile, the welding head on the welding frame is equipped with a visual positioning system, the welding position can be further calibrated, the positioning accuracy is double guaranteed, compared with the existing equipment, the welding defective problems such as virtual welding and short circuit are effectively reduced, and the welding quality stability is improved.

[0026] The distance between the carrying wall plate and the fixed strip can be manually adjusted through the adjusting screw in the carrying mechanism, the inner threaded pipe matched with the cross slot, the surface component higher circuit board can be quickly adapted, and the feeding jamming caused by the fixed carrying space of the existing equipment is avoided; meanwhile, through the linkage of the foot switch and the integrated controller, only three times of foot stepping can complete the unloading, feeding and clamping operation cycle, manual frequent carrying of the circuit board or adjustment of the complex parameters is not needed, the operation strength is reduced, and the welding demand of the medium and small batch multi-specification circuit board is adapted. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic diagram of the three-dimensional structure of the present application Figure 1 ;

[0028] Figure 2 is a schematic diagram of the three-dimensional structure of the present application Figure 2 ;

[0029] Figure 3 is a schematic diagram of the three-dimensional structure of the present application Figure 1 ;

[0030] Figure 4 is a schematic diagram of the three-dimensional structure of the present application Figure 3 ;

[0031] Figure 5 is a schematic diagram of the three-dimensional structure of the present application Figure 4 ;

[0032] Figure 6 is a schematic diagram of the three-dimensional structure of the present application Figure 4 ;

[0033] Figure 7 is a schematic diagram of the three-dimensional structure of the present application Figure 6 ;

[0034] Figure 8 is a schematic diagram of the three-dimensional structure of the present application Figure 6 ;

[0035] Figure 9 is a schematic diagram of the three-dimensional structure of the present application Figure 4 ;

[0036] Figure 10 is a schematic diagram of the three-dimensional structure of the present application Figure 9 ;

[0037] Figure 11 is a schematic diagram of the three-dimensional structure of the present application Figure 1 ;

[0038] In the drawings:

[0039] 1. Rack; 101. Base plate; 102. Support upright; 103. Support top plate; 104. Mounting panel; 105. Integrated controller;

[0040] 2. Welded frame; 201. Longeron; 202. Welded joint; 203. Lugs; 204. Longitudinal motor; 205. Longitudinal screw; 206. Crossmember; 207. Upright; 208. Transverse motor; 209. Transverse screw; 210. T-shaped base; 211. Rail slide hole; 212. Vertical telescopic rod;

[0041] 3. Carrying table; 301. Thin plate; 302. Thick plate; 303. Fixing bar; 304. Drive shaft; 305. Driven shaft; 306. Hanging plate; 307. Worm gear motor; 308. Angle encoder; 309. Rotary electrical connector; 310. Bearing; 311. Scale;

[0042] 4. Feeding table;

[0043] 5. Discharging table; 501. Table leg; 502. Table top; 503. Limiting bar; 504. Limiting groove; 505. Open hole;

[0044] 6. Carrying mechanism; 601. Carrying wall plate; 602. Carrying slot; 603. Chamfered slope; 604. Guide hole; 605. Guide column; 606. Containing channel; 607. Adjusting screw; 608. Internally threaded tube; 609. Rotating cap; 610. Cross slot; 611. Compression ring; 612. Tooth groove;

[0045] 7. Clamping mechanism; 701. Air cavity; 702. Piston channel; 703. Mounting groove; 704. Sealing plate; 705. Sealing ring; 706. Return spring; 707. Piston rod; 708. Clamping bar; 709. Elastic pad; 710. Constant pressure hole;

[0046] 8. Pneumatic system; 801. Constant pressure cylinder; 802. Constant pressure tube; 803. Three-way valve one; 804. Three-way valve two; 805. Rotating connector; 806. Gas conveying elbow; 807. Gas pump; 808. Foot switch;

[0047] 9. Positioning mechanism; 901. Positioning jack; 902. Fixed flat box; 903. Upper protruding column; 904. Traction spring; 905. Lower protruding column; 906. Positioning plate; 907. Telescopic rod one; 908. Fixed jack;

[0048] 10. Adapter; 1001. Telescopic rod two; 1002. Mounting base plate; 1003. Distance sensor one; 1004. Distance sensor two. DETAILED DESCRIPTION

[0049] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The technical solutions in the embodiments of the present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0050] In order for those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0051] As shown in the drawings, Figures 1-11 The present application provides a line board processing alignment welding device, which comprises a rack 1, characterized in that the rack 1 is internally provided with a welding frame 2, the welding frame 2 is provided with a welding head 202, the welding frame 2 can drive the welding head 202 to move in space along left and right, up and down, and front and back, the welding head 202 is provided with a visual positioning system, the lower part of the welding frame 2 is provided with a bearing table 3, the left side of the bearing table 3 is provided with an input table 4, the input table 4 is placed close to a storage rack for stacking line boards to be welded, the right side of the bearing table 3 is provided with an output table 5, the output table 5 is placed close to a storage rack for stacking welded line boards, and the specific positions of the input table 4 and the output table 5 are mainly convenient for taking and placing.

[0052] The bearing table 3 is provided with a carrying mechanism 6, the carrying mechanism 6 is internally provided with a clamping mechanism 7, one end of the carrying mechanism 6 is provided with a positioning mechanism 9, the top of the rack 1 is provided with a pneumatic system 8, the pneumatic system 8 is communicated with the clamping mechanism 7, the line board accurately enters the carrying mechanism 6 through the input table 4, the positioning mechanism 9 limits the position of the line board in the carrying mechanism 6, the pneumatic system 8 drives the clamping mechanism 7 to act, and the clamping mechanism 7 stably clamps the line board in the carrying mechanism 6, the carrying mechanism 6 can simultaneously fix two line boards, one of which faces upwards and is located at a working position, and the other of which faces downwards and is located at a waiting position, the bearing table 3 flips the two line boards, so as to transfer the welded line board from the working position to the waiting position and transfer the line board to be welded to the working position, the welded line board on the waiting position can enter the output table 5, so as to conveniently take out the welded line board, and the rack 1 and the welding frame 2 are provided with an adapter 10, which is used for monitoring the position height of the carrying mechanism 6 and the welding frame 2.

[0053] The rack 1 comprises a base plate 101, the top surface of the base plate 101 is fixedly connected with a supporting vertical plate 102, the top end of the supporting vertical plate 102 is fixedly installed with a supporting top plate 103, the front end of the supporting top plate 103 is fixedly installed with a mounting panel 104, and the surface of the mounting panel 104 is fixedly installed with an integrated controller 105.

[0054] The integrated controller 105 is electrically connected with all the electrical equipment for data transmission and power transmission.

[0055] The integrated controller 105 as the core control component, through the electrical connection with the welding frame 2, the supporting table 3, the clamping mechanism 7, the pneumatic system 8, the positioning mechanism 9 and other components, realizes the cooperative control of the actions of each component, for example, synchronously controls the positioning of the positioning mechanism 9 and the clamping of the clamping mechanism 7, avoids the disorder of component action leading to the positioning deviation of the circuit board, and provides the control basis for the subsequent welding precision and efficiency.

[0056] Please refer to Figure 2 and Figure 3 , the welding frame 2 includes two longitudinal beams 201, which are symmetrically and fixedly installed on the bottom surface of the supporting top plate 103. The welding head 202 is installed at the bottom of the longitudinal beam 201. The protruding plates 203 are fixedly installed at the two side end portions of the two longitudinal beams 201 close to each other. The longitudinal motors 204 are bolted to the outer side surfaces of the protruding plates 203. The output shafts of the longitudinal motors 204 are fixedly connected with the longitudinal screws 205, which are movably inserted into the protruding plates 203. The longitudinal screws 205 are threadedly matched with the sleeves of the cross beams 206. The vertical plates 207 are fixedly connected to the top surfaces of the two ends of the cross beams 206. The lateral motors 208 are bolted to the outer side surfaces of one vertical plate 207. The output shafts of the lateral motors 208 are fixedly connected with the lateral screws 209, which are movably inserted into the vertical plate 207. The lateral screws 209 are threadedly matched with the sleeves of the T-shaped base 210. The vertical telescopic rods 212 are fixedly inserted into the inside of the T-shaped base 210 in a vertical manner. The bottom ends of the rods inside the vertical telescopic rods 212 are fixedly connected to the top surface of the welding head 202.

[0057] The longitudinal motors 204 drive the longitudinal screws 205 to rotate and drive the cross beams 206 to move forward and backward. The lateral motors 208 drive the lateral screws 209 to rotate and drive the T-shaped base 210 to move left and right. In cooperation with the up and down telescoping of the vertical telescopic rods 212, the precise movement of the welding head 202 in the three-dimensional space is realized. In combination with the visual positioning system on the welding head 202, the welding point position can be quickly calibrated, and the problem of poor welding caused by insufficient movement precision of the welding head of the existing equipment is solved.

[0058] Please refer to Figure 3 , Figure 4 and Figure 5The bearing table 3 comprises a thin plate 301 and a thick plate 302, the thin plate 301 and the thick plate 302 are arranged in parallel and alignment, both end faces of the thin plate 301 are fixedly connected with a fixed strip 303 located at the middle part, both ends of the thick plate 302 are fixedly connected with two fixed strips 303 at the other two ends, respectively, the outer side of the thin plate 301 is fixedly connected with a driving shaft 304, the outer side of the thick plate 302 is fixedly connected with a driven shaft 305, the outer part of the driving shaft 304 and the driven shaft 305 is movably sleeved with a hanging plate 306, the top end of the two hanging plates 306 is fixedly connected at the middle position of the bottom surface of the two longitudinal beams 201, respectively, the outer side of one hanging plate 306 is bolted with a worm gear motor 307, the output shaft of the worm gear motor 307 is hollow, the output shaft of the worm gear motor 307 is fixedly sleeved outside the driving shaft 304, the end part of the driven shaft 305 is provided with an angle encoder 308, the angle encoder 308 is fixedly installed on the outer side of the other hanging plate 306, the outer part of the driven shaft 305 is sleeved with a rotary electrical connector 309 located between the thick plate 302 and the hanging plate 306, the outer part of the driving shaft 304 and the driven shaft 305 is fixedly sleeved with a bearing 310, the bearing 310 is embedded on the hanging plate 306, the outer side of the fixed strip 303 is fixedly connected with a scale 311 located at the middle part.

[0059] The worm gear motor 307 drives the thin plate 301, the thick plate 302, the fixed strip 303 and the carrying mechanism 6 to overturn as a whole by driving the driving shaft 304, the angle encoder 308 monitors the overturning angle in real time, ensures that the carrying mechanism 6 overturns accurately by 180 degrees, and avoids that the position of the circuit board deviates due to the deviation of the overturning angle; the rotary electrical connector 309 guarantees the transmission of electric energy and signal during the overturning process of the driven shaft 305, and the bearing 310 reduces the friction resistance when the driving shaft 304 and the driven shaft 305 rotate, and improves the stability and service life of the overturning action.

[0060] The rotary electrical connector 309 is used to realize the transmission of electric energy and signal during the overturning process of the driven shaft 305.

[0061] Please refer to Figure 1 , Figure 2 and Figure 11 , the feeding table 4 and the discharging table 5 each comprise four table legs 501 fixedly installed on the top surface of the base plate 101, the top surface of the table leg 501 is fixedly connected with a table top 502, the top surface of the table top 502 is fixedly provided with two limiting strips 503 symmetrically, the limiting strip 503 is located at the edge of the top surface of the table top 502 and extends along the length direction of the table top 502, limiting grooves 504 are formed in the two faces of the two limiting strips 503 close to each other, an open hole 505 is formed in the end of the limiting strip 503 away from the rack 1 on the top surface, and the open hole 505 is in communication with the limiting groove 504.

[0062] The limiting groove 504 is aligned with the object carrying slot 602 of the object carrying mechanism 6, forming a conveying channel for the circuit board. The open design of the open hole 505 facilitates manual placement of the circuit board into the limiting groove 504. The limiting strips 503 limit the movement direction of the circuit board from both sides, avoiding deviation of the circuit board during conveying, ensuring that the circuit board can be accurately slid into the object carrying slot 602, and solving the problem of easy deviation of the circuit board during the existing feeding process.

[0063] Please refer to Figure 4 、 Figure 5 、 Figure 6 and Figure 7 , the object carrying mechanism 6 includes four object carrying wall plates 601, which are respectively arranged on the upper and lower surfaces of the two fixed strips 303. The end portions of the four object carrying wall plates 601 are provided with positioning mechanisms 9. The two object carrying wall plates 601 on the same side of the fixed strip 303 form a group and jointly bear the same circuit board. The height value of the object carrying wall plate 601 is greater than half the height value of the thin plate 301. An object carrying slot 602 is formed on the end of the inner side of the object carrying wall plate 601 away from the fixed strip 303. The object carrying slot 602 is aligned with the limiting groove 504. A chamfered slope 603 is formed on the inner wall end portion of the inner side of the object carrying slot 602 away from the fixed strip 303. A guide hole 604 is formed on the surface end portion of the object carrying wall plate 601 in contact with the surface of the fixed strip 303. A guide column 605 is slidingly inserted into the guide hole 604. The other end of the guide column 605 is fixedly connected to the surface of the fixed strip 303. A containing channel 606 is formed in the middle of the surface of the object carrying wall plate 601 in contact with the surface of the fixed strip 303. The other end of the containing channel 606 penetrates the object carrying wall plate 601. A countersunk groove is formed on the surface of the object carrying wall plate 601 away from the fixed strip 303. An adjusting screw 607 is movably inserted into the containing channel 606. The other end of the adjusting screw 607 is fixedly connected to the surface of the fixed strip 303. An internally threaded tube 608 is movably inserted into the containing channel 606. The internally threaded tube 608 is threadedly fitted on the outside of the adjusting screw 607. The free end of the internally threaded tube 608 extends into the countersunk groove and is fixedly connected with a rotating cap 609. The rotating cap 609 is movably inserted into the countersunk groove. A cross slot 610 is formed on the other end surface of the rotating cap 609. Threads are formed on the inner wall of the countersunk groove. A compression ring 611 is threadedly fitted in the countersunk groove. The compression ring 611 limits the rotating cap 609 in the countersunk groove. A tooth groove 612 is formed on the inner wall of the compression ring 611.

[0064] The electrical equipment on the object carrying wall plate 601 is electrically connected with the integrated controller 105 through the rotating electrical connector 309.

[0065] The upper and lower groups of object carrying wall plates 601 correspond to the workstations and waiting positions respectively, realizing synchronous carrying of two circuit boards; the chamfer design of the chamfered inclined surface 603 avoids the circuit board from being stuck by the edge when sliding into the object carrying slot 602; the guide hole 604 cooperates with the guide column 605 to ensure that the object carrying wall plate 601 moves in a fixed direction when being adjusted; the screw thread cooperation structure of the adjusting screw 607, the internally threaded tube 608 and the rotating cap 609 realizes the adjustable distance between the object carrying wall plate 601 and the fixed strip 303, which is suitable for circuit boards of different thicknesses or with high components, and solves the adaptability problem of the fixed carrying space of the existing equipment.

[0066] Please refer to Figure 4 , Figure 6 , Figure 7 and Figure 8 , the clamping mechanism 7 includes an air cavity 701, which is opened on the surface of the object carrying wall plate 601 in contact with the fixed strip 303 and is staggered with the guide hole 604 and the containing channel 606, a plurality of piston channels 702 are opened on the inner wall of the air cavity 701 at equal distances, one end of the piston channel 702 is communicated with the object carrying slot 602, a mounting groove 703 is opened on the surface of the object carrying wall plate 601 in contact with the fixed strip 303 and communicated with the air cavity 701, a sealing plate 704 is bolted in the mounting groove 703, a sealing ring 705 is mounted between the sealing plate 704 and the inner wall of the mounting groove 703, which is used to seal the opening of the air cavity 701, a plurality of return springs 706 are fixedly installed on the surface of the sealing plate 704 close to the air cavity 701 at equal distances, one end of the return spring 706 is fixedly connected with a piston rod 707, the return spring 706 and the piston rod 707 are movably inserted into the piston channel 702, the surface of the piston rod 707 is provided with an annular groove, a sealing ring is embedded in the annular groove, the sealing ring slides in the piston channel 702, the end of the piston rod 707 extends into the object carrying slot 602 and is fixedly connected with a clamping strip 708, the clamping strip 708 is connected with the inner wall of the object carrying slot 602, the other side of the clamping strip 708 is fixedly connected with an elastic pad 709, the elastic pad 709 can clamp the circuit board without damage, a constant pressure hole 710 is opened on the inner wall of the air cavity 701 at one corner thereof, and the constant pressure hole 710 is communicated with the pneumatic system 8.

[0067] After the pneumatic system 8 introduces gas into the air cavity 701, the differential pressure drives the piston rod 707 to move the clamping strip 708 and the elastic pad 709 to the circuit board, realizing clamping; the return spring effect of the return spring 706 ensures that the elastic pad 709 automatically retracts after pressure relief, facilitating the removal of the circuit board; the elastic material of the elastic pad 709 avoids damaging the surface of the circuit board or the components during clamping, and the sealing ring on the surface of the piston rod 707 ensures the air tightness of the piston channel 702, ensuring stable clamping force, solving the problem of uneven force or damage to the circuit board of the existing clamping mechanism.

[0068] Please refer to Figure 2 andFigure 4 The pneumatic system 8 comprises a constant pressure cylinder 801 and a foot switch 808. The constant pressure cylinder 801 is fixedly connected to the outer side of the thin plate 301 and fixedly sleeved on the outer surface of the drive shaft 304. Four constant pressure pipes 802 are fixedly and communicatively connected to the outer side of the constant pressure cylinder 801. The other ends of the constant pressure pipes 802 are fixedly inserted into the inner part of the constant pressure hole 710 and are in communication with the air cavity 701. Three-way valve one 803 is fixedly and communicatively connected to the corresponding constant pressure pipe 802 of one set of the load wall plates 601. Three-way valve two 804 is fixedly and communicatively connected to the corresponding constant pressure pipe 802 of the other set of the load wall plates 601. The drive shaft 304 is hollow and is in communication with the constant pressure cylinder 801. The drive shaft 304 is fixedly provided with a rotary connecting pipe 805 at the end. The other end of the rotary connecting pipe 805 is fixedly and communicatively connected to a gas conveying elbow 806. The other end of the gas conveying elbow 806 is fixedly and communicatively connected to a gas pump 807. The gas pump 807 is fixedly installed on the top surface of the support top plate 103. The foot switch 808 is placed on the top surface of the base plate 101.

[0069] The constant pressure pipes 802 are in communication with the air cavity 701 through the constant pressure hole 710.

[0070] The pneumatic system 8 is used to drive the clamping mechanism 7 to act, so that the clamping mechanism 7 clamps and fixes the circuit board, and ensures that the circuit board will not be deviated during the welding process.

[0071] After the gas pump 807 is stably operated, the inside of the gas pump 807 is in a constant pressure state.

[0072] The gas pump 807 provides a stable gas source. The constant pressure cylinder 801 plays a role of pressure stabilization, and ensures that the air pressure entering the air cavity 701 is uniform. The three-way valve one 803 and the three-way valve two 804 respectively control the clamping actions of the clamping mechanisms 7 corresponding to the two sets of load wall plates 601, so as to realize independent control of the clamping in the work position and the waiting position, and avoid mutual interference. The rotary connecting pipe 805 guarantees the stable communication of the gas conveying channel when the drive shaft 304 is turned over. The foot switch 808 provides a convenient triggering mode for manual operation, without the need for complex key operation, and improves the operation efficiency.

[0073] Please refer to Figure 7 , Figure 9 , and Figure 10The positioning mechanism 9 comprises a positioning socket 901 and a fixed flat box 902. The positioning socket 901 is arranged on the object carrying wall plate 601 away from the surface of the fixed strip 303. The fixed flat box 902 is bolted on the surface of the object carrying wall plate 601 and communicates with the positioning socket 901. The top surface of the inner cavity of the fixed flat box 902 is fixedly connected with an upper protruding column 903. The outer part of the upper protruding column 903 is fixedly sleeved with a traction spring 904. The bottom end of the traction spring 904 is fixedly sleeved with a lower protruding column 905. The bottom end of the lower protruding column 905 is fixedly connected with a positioning plate 906. The positioning plate 906 is movably inserted into the inner part of the positioning socket 901. The end surface of the positioning plate 906 is flush with the inner wall of the object carrying slot 602. The top surface of the positioning plate 906 is fixedly connected with an extension rod one 907. The top surface of the fixed flat box 902 is provided with a fixed socket 908. The extension rod one 907 is fixedly inserted into the inner part of the fixed socket 908.

[0074] The extension rod one 907 is powered to elongate and press the positioning plate 906 against the inner wall of the object carrying slot 602, so as to limit the position of the circuit board in the inner part of the object carrying slot 602.

[0075] The extension rod one 907 is powered to elongate and press the positioning plate 906 against the inner wall of the object carrying slot 602, so as to limit the position of the circuit board in the inner part of the object carrying slot 602.

[0076] Please refer to Figure 1 , Figure 2 , and Figure 3 . The adapter 10 comprises an extension rod two 1001, a mounting base plate 1002 and a distance sensor two 1004. One end of the extension rod two 1001 is fixedly connected to the top surface of the longitudinal beam 201. The other end of the extension rod two 1001 is fixedly connected to the bottom surface of the support top plate 103. The mounting base plate 1002 is fixedly connected to the left side surface of the support top plate 103. The bottom surface of the mounting base plate 1002 is fixedly connected with a distance sensor one 1003. The distance sensor two 1004 is fixedly connected to the top surface of the base plate 101 and is aligned with one object carrying wall plate 601.

[0077] The distance sensor one 1003 monitors the position height of the welding frame 2. The distance sensor two 1004 monitors the position height of the object carrying wall plate 601. After the data of the two is transmitted to the integrated controller 105, the integrated controller 105 controls the extension rod two 1001 to adjust the overall height of the object carrying mechanism 6, so as to ensure that the object carrying slot 602 is always aligned with the limiting slot 504, avoid the circuit board from being stuck after the object carrying wall plate 601 is adjusted due to the height deviation, and further improve the stability of the equipment when adapting to different specifications of the circuit board.

[0078] A line board processing alignment welding method, comprising the following steps:

[0079] First step: Place the storage rack containing the line boards to be welded near the feeding table 4, and place the storage rack containing the welded line boards near the discharging table 5, and start the equipment through the integrated controller 105;

[0080] Second step: Step on the foot switch 808, push the welded line boards from the loading slot 602 to the discharging table 5, and take out and place them on the storage rack;

[0081] Third step: Step on the foot switch 808 again, take the line boards to be welded and place them in the open hole 505 of the feeding table 4, and push the line boards to the right, so that the line boards slide into the loading slot 602 along the limiting slot 504 until they abut against the positioning plate 906;

[0082] Fourth step: Step on the foot switch 808 for the third time, and the pneumatic system 8 drives the clamping mechanism 7 to clamp the line boards to be welded, and the welding frame 2 subsequently welds them;

[0083] Fifth step: Repeat steps two, three and four to realize the cycle operation.

[0084] Working principle

[0085] First, the storage rack of the code placed to be welded circuit board is placed in the vicinity of the feeding table 4, then the storage rack of the code placed welded circuit board is placed in the vicinity of the discharging table 5, then the integrated controller 105 is started, then the integrated controller 105 controls the telescopic rod one 907 to be powered, then the telescopic rod one 907 is elongated and the positioning plate 906 is pressed on the inner wall of the carrying slot 602, which is used to limit the position of the circuit board inside the carrying slot 602, at the same time the positioning plate 906 pulls the traction spring 904, the traction spring 904 is elastically elongated, the elastic potential energy is increased, then the integrated controller 105 controls the air pump 807 to run until the air pressure inside the air pump 807 reaches the preset pressure, then the integrated controller 105 controls the three-way valve one 803 and the three-way valve two 804 to be conducted, then the gas inside the air pump 807 passes through the gas delivery elbow 806, the rotary connector 805, the driving shaft 304 inner cavity, the constant pressure cylinder 801 inner cavity, the constant pressure pipe 802 into the air cavity 701 under the action of pressure, then the air pressure inside the air cavity 701 increases, then the piston rod 707 moves to the inside of the carrying slot 602 under the action of pressure difference, at the same time the piston rod 707 pulls the reset spring 706, the reset spring 706 is elastically stretched, the elastic potential energy is increased, then the piston rod 707 moves synchronously with the clamping strip 708 and the elastic pad 709, then the elastic pad 709 is pressed on the other inner wall of the carrying slot 602, which is used to clamp the circuit board, ensuring that the circuit board will not shift during welding, then the integrated controller 105 monitors the relative position of the three-way valve one 803 and the three-way valve two 804 according to the data detected by the angle encoder 308, when the three-way valve one 803 is below the three-way valve two 804, the integrated controller 105 controls the three-way valve one 803, at the same time it can control the downward positioning mechanism 9, when the three-way valve two 804 is below the three-way valve one 803, the integrated controller 105 controls the three-way valve two 804, at the same time it can control the downward positioning mechanism 9, then the integrated controller 105 monitors that the three-way valve two 804 is below the three-way valve one 803, then step on the foot switch 808, the foot switch 808 sends a signal to the integrated controller 105, then the integrated controller 105 controls the three-way valve two 804 to act, then the three-way valve two 804 releases the gas inside the corresponding air cavity 701, the air pressure inside the air cavity 701 decreases, the piston rod 707 resets with the clamping strip 708 and the elastic pad 709 under the action of the elastic tension of the reset spring 706, at the same time the integrated controller 105 powers off the corresponding telescopic rod one 907, the positioning plate 906 retracts under the action of the elastic force of the traction spring 904, in this state, the welded circuit board can be pushed to the right to the discharging table 5, making it convenient to take off the welded circuit board and place it on the storage rack, then step on the foot switch 808 again, the integrated controller 105 controls the telescopic rod one 907 to be powered, the positioning plate 906 is extended under the push of the telescopic rod one 907, and the positioning plate 906 is positioned on the newly mounted circuit board to be welded,Then take a to-be-welded circuit board and place it in the open hole 505 on the feeding table 4, then push the to-be-welded circuit board to the right, and then the to-be-welded circuit board slides inside the limiting groove 504, and then the to-be-welded circuit board slides inside the object slot 602. The setting of the chamfer slope 603 ensures that the to-be-welded circuit board will not be stuck during the process of entering the object slot 602. Then the to-be-welded circuit board abuts against the positioning plate 906. At this time, stop applying a pushing force to the to-be-welded circuit board. Then step on the foot switch 808 for the third time. The integrated controller 105 controls the three-way valve two 804 to act, so that the gas inside the air pump 807 enters the air cavity 701. Then the clamping strip 708 presses the to-be-welded circuit board against the inner wall of the object slot 602 through the elastic pad 709, so as to realize the clamping and fixing of the to-be-welded circuit board. Then the integrated controller 105 detects whether the welding head 202 is in operation. When the welding head 202 is in the welding operation, the integrated controller 105 does not control the worm gear motor 307 to run. When the welding head 202 finishes welding and resets, the integrated controller 105 controls the worm gear motor 307 to run. Then the worm gear motor 307 drives the thin plate 301, the fixed strip 303, the thick plate 302, the driven shaft 305, and the object mechanism 6 to turn one hundred and eighty degrees. The object mechanism 6 turns one hundred and eighty degrees with the to-be-welded circuit board. At this time, the chamfer slope 603 is below the guide hole 604. Then the to-be-welded circuit board faces upwards and enters the work station. Then the integrated controller 105 controls the longitudinal motor 204 to run. The longitudinal motor 204 drives the longitudinal screw 205 to rotate. The cross beam 206 moves under the threaded cooperation between the longitudinal screw 205 and the cross beam 206. The integrated controller 105 controls the moving direction of the cross beam 206 by controlling the running direction of the longitudinal motor 204, so as to control the position of the welding head 202 in the front-back direction. Then the integrated controller 105 controls the transverse motor 208 to run. The transverse motor 208 drives the transverse screw 209 to rotate. The T-shaped base 210 moves under the threaded cooperation between the transverse screw 209 and the T-shaped base 210. The integrated controller 105 controls the moving direction of the cross beam 206 by controlling the running direction of the transverse motor 208, so as to control the position of the welding head 202 in the left-right direction. The welding position is positioned by cooperating with the visual positioning system on the welding head 202. After positioning, the welding operation starts. The integrated controller 105 controls the vertical telescopic rod 212 to elongate. The vertical telescopic rod 212 drives the welding head 202 to move downwards and completes welding. Then the integrated controller 105 controls the vertical telescopic rod 212 to shorten, until the welding head 202 resets upwards. Then the integrated controller 105 controls the welding head 202 to move left and right and forward and backward to the next welding point. In this way, the welding work is carried out step by step. During this process, the foot switch 808 is stepped on for the first time, the second time, and the third time in turn, and the corresponding work is completed. The difference is that after stepping on the foot switch 808 for the first time, the welded circuit board is pushed to the discharging table 5 and taken out and placed on the storage rack.Then the welding head 202 welding is finished, the integrated controller 105 controls the worm gear motor 307 to run reversely, drives the carrying mechanism 6 to reverse one hundred and eighty degrees, makes the welded circuit board transfer to the waiting position and unloads, waits for the welding circuit board to transfer to the welding position, then repeats the welding work as above.

[0086] When the components on the circuit board are higher, the star-shaped screwdriver is inserted into the cross slot 610 and the rotating cap 609 and the inner threaded tube 608 are rotated, then the inner threaded tube 608 gradually moves away from the fixed strip 303 under the action of the threaded cooperation between the inner threaded tube 608 and the adjusting screw rod 607, then the distance between the carrying wall plate 601 and the fixed strip 303 is measured according to the scale 311, until the distance between the carrying slot 602 and the surface of the thin plate 301 and the thick plate 302 is adapted to the circuit board, then the distance sensor two 1004 monitors the position height of the carrying wall plate 601, then the distance sensor one 1003 monitors the position height of the welding frame 2, then the integrated controller 105 adjusts the position of the carrying mechanism 6 according to the data monitored by the distance sensor two 1004 and the data monitored by the distance sensor one 1003, then the integrated controller 105 controls the telescopic rod two 1001 to shorten, then the position height of the carrying mechanism 6 gradually rises until the adjustment is finished, at this time the carrying slot 602 is aligned with the limiting groove 504 again.

[0087] When double-sided welding is needed, only one circuit board is fixed on the carrying mechanism 6, then after the welding head 202 finishes welding one side of the circuit board, the integrated controller 105 drives the carrying table 3 and the carrying mechanism 6 to reverse one hundred and eighty degrees, turns over the circuit board, and welds the other side of the circuit board.

[0088] It should be understood by those skilled in the art that the above discussion of any embodiment is only exemplary; under the idea of the present application, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other changes of different aspects of the present application as described above, which are not provided in details for the sake of brevity.

[0089] The present application is intended to cover all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Accordingly, any and all such modifications, variations, alternatives and equivalents should be considered as falling within the scope of the present application.

Claims

1. A line-up welding apparatus for line board processing, comprising: The rack (1) is characterized in that the rack (1) is internally provided with a welding frame (2), the welding head (202) is installed on the welding frame (2), the welding frame (2) can drive the welding head (202) to move in space along left and right, up and down, and front and back, the welding head (202) is provided with a visual positioning system, the lower portion of the welding frame (2) is provided with a bearing table (3), the left side of the bearing table (3) is provided with a feeding table (4), the right side of the bearing table (3) is provided with a discharging table (5), the bearing table (3) is installed with a carrying mechanism (6), the carrying mechanism (6) is internally installed with a clamping mechanism (7), one end of the carrying mechanism (6) is installed with a positioning mechanism (9), the top of the rack (1) is installed with a pneumatic system (8), the pneumatic system (8) is communicated with the clamping mechanism (7), the circuit board is accurately fed into the carrying mechanism (6) through the feeding table (4), the positioning mechanism (9) limits the position of the circuit board in the carrying mechanism (6), the pneumatic system (8) drives the clamping mechanism (7) to act, the clamping mechanism (7) stably clamps the circuit board in the carrying mechanism (6), two circuit boards can be simultaneously fixed on the carrying mechanism (6), one faces upwards and is located at a working position, and the other faces downwards and is located at a waiting position, the bearing table (3) turns over the two circuit boards, is used for transferring the welded circuit board from the working position to the waiting position, and transfers the circuit board to be welded to the working position, the welded circuit board on the waiting position can enter the discharging table (5), the welded circuit board is conveniently taken out, the rack (1) and the welding frame (2) are provided with an adapter (10), and the adapter (10) is used for monitoring the position height of the carrying mechanism (6) and the welding frame (2); The rack (1) comprises a base plate (101), a supporting vertical plate (102) is fixedly connected to the top surface of the base plate (101), a supporting top plate (103) is fixedly installed at the top end of the supporting vertical plate (102), an installation panel (104) is fixedly installed at the front end of the supporting top plate (103), and an integrated controller (105) is fixedly installed on the surface of the installation panel (104). The welding frame (2) comprises two longitudinal beams (201), which are symmetrically fixedly installed on the bottom surface of the support top plate (103), the bottom of the longitudinal beam (201) is provided with a welding head (202), the two sides of the longitudinal beam (201) are fixedly provided with a lug plate (203), the outer side of the lug plate (203) is bolted with a longitudinal motor (204), the output shaft of the longitudinal motor (204) is fixedly connected with a longitudinal screw rod (205), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is movably inserted into the lug plate (203), the longitudinal screw rod (205) is 2. The alignment welding device for processing a wiring board according to claim 1, wherein ​ 3. The alignment welding device for processing a wiring board according to claim 1, wherein The feeding table (4) and the discharging table (5) each comprise four table legs (501) fixedly installed on the top surface of the base plate (101), the top surface of the table leg (501) is fixedly connected with a table top (502), the top surface of the table top (502) is fixedly installed with two limiting strips (503) symmetrically, the limiting strips (503) are located at the edge of the top surface of the table top (502) and extend along the length direction of the table top (502), limiting grooves (504) are formed on the two surfaces of the two limiting strips (503) close to each other, and open holes (505) are formed on the top surface of the limiting strips (503) away from the rack (1).

4. The alignment welding apparatus for processing a wiring board according to claim 2 or 3, wherein The object carrying mechanism (6) comprises four object carrying wall plates (601), the four object carrying wall plates (601) are arranged on the upper and lower surfaces of the two fixed strips (303) respectively, the end portions of the four object carrying wall plates (601) are provided with positioning mechanisms (9), the two object carrying wall plates (601) on the same side of the fixed strip (303) form a group and jointly bear the same circuit board, the upper and lower groups of object carrying wall plates (601) correspond to the working position and the waiting position respectively, the height value of the object carrying wall plate (601) is greater than half of the height value of the thin plate (301), the inner side of the object carrying wall plate (601) is provided with an object carrying slot (602) away from the fixed strip (303), the object carrying slot (602) is aligned with the limiting groove (504), the inner wall end portion of the object carrying slot (602) away from the fixed strip (303) is provided with a chamfered inclined surface (603), the surface end portion of the object carrying wall plate (601) in contact with the surface of the fixed strip (303) is provided with a guide hole (604), a guide column (605) is slidably inserted into the guide hole (604), the other end of the guide column (605) is fixedly connected to the surface of the fixed strip (303), a containing channel (606) is formed in the middle of the surface of the object carrying wall plate (601) in contact with the surface of the fixed strip (303), the other end of the containing channel (606) penetrates through the object carrying wall plate (601), a countersunk groove is formed in the surface of the object carrying wall plate (601) away from the fixed strip (303), an adjusting screw (607) is movably inserted into the containing channel (606), the other end of the adjusting screw (607) is fixedly connected to the surface of the fixed strip (303), an internally threaded pipe (608) is movably inserted into the containing channel (606), the internally threaded pipe (608) is threadedly matched with the outside of the adjusting screw (607), the free end of the internally threaded pipe (608) extends into the countersunk groove and is fixedly connected with a rotating cap (609), the rotating cap (609) is movably inserted into the countersunk groove, a cross slot (610) is formed in the other end surface of the rotating cap (609), a thread is formed on the inner wall of the countersunk groove, a compression ring (611) is threadedly matched and mounted in the countersunk groove, the compression ring (611) limits the rotating cap (609) in the countersunk groove, and a gear slot (612) is formed in the inner wall of the compression ring (611).

5. The alignment welding apparatus for processing a wiring board according to claim 4, wherein The clamping mechanism (7) includes an air cavity (701) which is arranged on the surface of the object carrying wall plate (601) in contact with the fixing strip (303) and is staggered with the guide hole (604) and the containing channel (606), a plurality of piston channels (702) which are arranged at equal distances on the inner wall of the air cavity (701), the other end of the piston channel (702) is communicated with the object carrying slot (602), the surface of the object carrying wall plate (601) in contact with the fixing strip (303) is provided with a mounting groove (703) communicated with the air cavity (701), a sealing plate (704) is bolted in the mounting groove (703), a sealing ring (705) is arranged between the sealing plate (704) and the inner wall of the mounting groove (703) for sealing the opening of the air cavity (701), a plurality of return springs (706) are fixedly arranged at equal distances on the surface of the sealing plate (704) close to the air cavity (701), the other end of the return spring (706) is fixedly connected with a piston rod (707), the return spring (706) and the piston rod (707) are movably inserted into the piston channel (702), the surface of the piston rod (707) is provided with an annular groove, a sealing ring is embedded in the annular groove, the sealing ring slides in the piston channel (702), the end of the piston rod (707) extends into the object carrying slot (602) and is fixedly connected with a clamping strip (708), the clamping strip (708) is connected with the inner wall of the object carrying slot (602), the other side of the clamping strip (708) is fixedly connected with an elastic pad (709), the elastic pad (709) can clamp the circuit board without damage, a constant pressure hole (710) is arranged on the inner wall of the air cavity (701) at one corner thereof, the constant pressure hole (710) is communicated with the pneumatic system (8).

6. The alignment welding apparatus for processing a wiring board according to claim 5, wherein The pneumatic system (8) includes a constant pressure cylinder (801) and a foot switch (808), the constant pressure cylinder (801) is fixedly connected on the outer side of the thin plate (301) and is fixedly sleeved on the outer surface of the driving shaft (304), four constant pressure pipes (802) are fixedly communicated on the outer side of the constant pressure cylinder (801), the other end of the constant pressure pipe (802) is fixedly inserted into the constant pressure hole (710) and is communicated with the air cavity (701), a three-way valve one (803) is fixedly communicated on the corresponding constant pressure pipe (802) of one set of object carrying wall plates (601), a three-way valve two (804) is fixedly communicated on the corresponding constant pressure pipe (802) of the other set of object carrying wall plates (601), the driving shaft (304) is hollow and is communicated with the constant pressure cylinder (801), a rotary connecting pipe (805) is fixedly installed at the end of the driving shaft (304), a gas conveying elbow (806) is fixedly communicated at the other end of the rotary connecting pipe (805), a gas pump (807) is fixedly installed on the top surface of the supporting top plate (103), the foot switch (808) is placed on the top surface of the base plate (101).

7. The alignment welding apparatus for processing a wiring board according to claim 4, wherein The positioning mechanism (9) includes a positioning socket (901) and a fixed flat box (902), the positioning socket (901) is opened on the object carrying wall plate (601) away from the surface of the fixed strip (303) one end, the fixed flat box (902) is bolted on the surface of the object carrying wall plate (601) and is communicated with the positioning socket (901), the top surface of the inner chamber of the fixed flat box (902) is fixedly connected with an upper convex column (903), the outer part of the upper convex column (903) is fixedly sleeved with a traction spring (904), the bottom end of the traction spring (904) is fixedly sleeved with a lower convex column (905), the bottom end of the lower convex column (905) is fixedly connected with a positioning plate (906), the positioning plate (906) is movably inserted in the inside of the positioning socket (901), the end face of the positioning plate (906) is flush with the inner wall of the object carrying slot (602), the top surface of the positioning plate (906) is fixedly connected with an extension rod one (907), the top surface of the fixed flat box (902) is provided with a fixed socket (908), the extension rod one (907) is fixedly inserted in the inside of the fixed socket (908).

8. The alignment welding apparatus for processing a wiring board according to claim 4, wherein The adapter (10) includes an extension rod two (1001), an installation base plate (1002) and a distance sensor two (1004), one end of the extension rod two (1001) is fixedly connected on the top surface of the longitudinal beam (201), the other end of the extension rod two (1001) is fixedly connected on the bottom surface of the support top plate (103), the installation base plate (1002) is fixedly connected on the left side surface of the support top plate (103), the bottom surface of the installation base plate (1002) is fixedly connected with a distance sensor one (1003), the distance sensor two (1004) is fixedly connected on the top surface of the base plate (101) and is aligned with one object carrying wall plate (601), the extension rod two (1001) can be telescopic according to the monitoring data of the distance sensor one (1003) and the distance sensor two (1004), and the position height of the object carrying mechanism (6) is adjusted.

9. A method for aligning and welding a circuit board, using the aligning and welding apparatus for a circuit board according to claim 1, characterized by, The method comprises the following steps: The first step: the storage rack for stacking the to-be-soldered circuit board is placed near the feeding table (4), the storage rack for stacking the soldered circuit board is placed near the discharging table (5), and the equipment is started through the integrated controller (105); The second step: the foot pedal switch (808) is stepped on, the soldered circuit board is pushed from the object carrying slot (602) to the discharging table (5), and the soldered circuit board is taken out and placed on the storage rack; The third step: the foot pedal switch (808) is stepped on again, the to-be-soldered circuit board is placed in the opening hole (505) of the feeding table (4), the circuit board is pushed to the right, the circuit board slides into the object carrying slot (602) along the limiting groove (504), and stops against the positioning plate (906); The fourth step: the foot pedal switch (808) is stepped on for the third time, the to-be-soldered circuit board is clamped by the clamping mechanism (7) driven by the pneumatic system (8), and the soldering frame (2) subsequently performs soldering on the to-be-soldered circuit board; The fifth step: steps two, three and four are repeated to realize the cyclic operation.

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