PCB welding device

Abstract

The invention relates to the technical field of PCB welding, and discloses a PCB welding device which comprises a workbench, supporting columns correspondingly arranged on the two sides of the workbench are arranged, supporting plates are arranged on the supporting columns, limiting plates are arranged on the supporting plates in a sliding mode, L-shaped plates are arranged on the two supporting plates in a sliding mode, and U-shaped plates are arranged on the workbench in a sliding mode. And second extension plates are arranged at the two ends of the U-shaped plate, first springs are arranged between the second extension plates and the L-shaped plate, first sleeves correspondingly arranged on the two sides are movably connected to the workbench in an inserted mode, and bearing assemblies are movably connected to the first sleeves in an inserted mode. Meanwhile, the welding wire can be uniformly melted, and the welding quality is improved.

Description

Technical Field

[0001] The invention relates to the technical field of PCB board welding, and in particular to a PCB board welding device. Background Art

[0002] PCB board is made by electronic printing technology, so it is also called printed circuit board. It is the support body of electronic components and the carrier for the electrical connection of electronic components. PCB board is the core component of electrical equipment and is used to control the operation of electrical equipment.

[0003] When soldering a PCB, first insert the pins of the components into the corresponding holes on the PCB, press the components to make them close to the PCB, turn the PCB over, place the soldering iron on the pad, and then feed in the solder wire. Keep it there for a few seconds and then remove the soldering iron to complete the soldering.

[0004] During welding, there will be a multi-pin control chip located in the middle of the PCB board. Workers are required to weld each pin during welding, which is rather troublesome. In addition, it is difficult to control the amount of welding wire during manual welding, which may easily cause the welding wire to melt too much or too little, resulting in short circuits or cold solder joints. The welding efficiency is low and the quality is difficult to guarantee. Summary of the invention

[0005] The technical problem to be solved by the present invention is to overcome the above difficulties and provide a PCB board welding device.

[0006] To solve the above technical problems, the technical solution provided by the present invention is: a PCB board welding device, comprising a workbench, the workbench is provided with support columns arranged correspondingly on both sides, the support columns are provided with support plates, the support plates are slidably provided with limit plates, and L-shaped plates are slidably provided on both support plates, a U-shaped plate is slidably provided on the workbench, two extension plates are provided at both ends of the U-shaped plate, a spring is provided between the two extension plates and the L-shaped plate, a sleeve one is movably inserted into the workbench and arranged correspondingly on both sides, a bearing assembly is movably inserted into the sleeve one, a spring two is provided between the bearing assembly and the sleeve one, components are placed on the bearing assembly, and a sliding mechanism is provided on the workbench that drives the sleeve one to move up and down by sliding the U-shaped plate, a mounting seat is rotatably provided on one side of the support plate, a torsion spring one is provided between the mounting seat and the support plate, and a U-shaped plate is provided on the workbench to move and drive The transmission mechanism one for rotating the mounting seat, a placement component is slidably provided on the mounting seat, the electric soldering iron and the welding wire ring are placed on the placement component, the placement component is provided with an adjustment mechanism for driving the electric soldering iron to rotate back and forth and the welding wire on the welding wire ring to move respectively, the PCB board is placed on the supporting plate, the movement of the U-shaped plate drives the movement of the L-shaped plate, the movement of the L-shaped plate drives the movement of the PCB board, the U-shaped plate continues to move to drive the sliding mechanism, the sliding mechanism drives the bearing component on the sleeve one to move upward, so that the components are inserted into the corresponding jacks on the PCB board, the movement of the U-shaped plate drives the transmission mechanism one, the transmission mechanism drives the mounting seat to rotate and makes the bottom surface of the mounting seat fit with the surface of the PCB board, the U-shaped plate continues to move to drive the adjustment mechanism, the adjustment mechanism drives the electric soldering iron to rotate back and forth and the welding wire ring to rotate, the welding wire is located at the welding position, the electric soldering iron rotates and contacts with the welding wire to melt the welding wire.

[0007] As an improvement, the sliding mechanism includes a rotating shaft rotatably arranged on the workbench, gear 1 is provided at both ends of the rotating shaft, gear 2 is provided in the middle of the rotating shaft, rack 1 meshing with gear 1 is provided on the bottom surface of sleeve 1, and rack 2 cooperating with gear 2 is provided on the U-shaped plate.

[0008] As an improvement, the transmission mechanism 1 includes a plurality of guide rollers arranged on the workbench, a connecting plate is provided on the U-shaped plate, and a connecting rope 1 is provided between the connecting plate and the mounting seat and passes through the guide rollers.

[0009] As an improvement, the placement assembly includes a slide plate slidably arranged on a mounting seat, a U-shaped bracket is slidably provided on the slide plate, a screw rod for driving the U-shaped bracket to slide is rotatably provided on the slide plate, the screw rod is rotatably connected to the U-shaped bracket, a U-shaped seat is rotatably provided on the U-shaped bracket, two torsion springs are provided between the U-shaped seat and the U-shaped bracket, the electric soldering iron is fixedly arranged on the U-shaped seat, a fixing plate is provided on the mounting seat, a placing plate is slidably provided on one side of the fixing plate, a fixed shaft is provided on the bottom surface of the placing plate, the welding wire ring is rotatably arranged on the fixed shaft, a circular ring is provided on the electric soldering iron, two sleeves are provided on the circular ring, a connecting rod is hinged on the placing plate, the connecting rod is sleeved on the second sleeve, a guide tube is provided on one side of the placing plate, and the welding wire on the welding wire ring extends to the bottom of one end of the electric soldering iron through the guide tube.

[0010] As an improvement, the adjustment mechanism includes a moving mechanism for controlling the movement of the slide plate, a rotating mechanism for controlling the reciprocating rotation of the soldering iron, and a control mechanism for controlling the movement of the welding wire to the bottom of one end of the soldering iron. The moving mechanism includes a transmission gear 1 rotatably arranged on both sides of the U-shaped plate, a rack 3 is provided on the U-shaped plate and cooperates with the transmission gear 1, a rack 4 is slidably arranged on the workbench, a driving rod for pushing the slide plate to move is provided on the rack 4, an extension block cooperating with the driving rod is provided on the bottom surface of the slide plate, a transmission gear 2 rotatably arranged on the workbench and meshing with the rack 4, and a transmission mechanism 2 is provided between the transmission gear 1 and the transmission gear 2, which drives the transmission gear 2 to rotate when the transmission gear 1 rotates.

[0011] As an improvement, the rotating mechanism includes a winding roller rotatably arranged on a U-shaped bracket, a gear three is provided on the winding roller, a connecting rope two is provided between the winding roller and the U-shaped seat, a guide shaft cooperating with the connecting rope two is provided on the U-shaped bracket, and a plurality of tooth plates cooperating with the gear three are provided on the fixed plate, with gaps left between adjacent tooth plates.

[0012] As an improvement, the control mechanism includes two driving wheels rotatably arranged on the placement plate, the two driving wheels are tangent to each other, the driving wheels are provided with an annular groove matching the welding wire, the welding wire is located between the two driving wheels, the driving wheels are provided with a gear four, the two gears four are meshed, a gear five is rotatably arranged on the placement plate and meshes with one of the gears four, a gear six is ​​rotatably arranged on the placement plate, a rack five is slidably arranged on the fixed plate, and a transmission mechanism three is provided between the gear five and the gear six, which drives the gear five to rotate by the gear six.

[0013] The advantages of the present invention compared with the prior art are: 1. Through the L-shaped plate and the limit plate, the PCB board can be positioned to facilitate the subsequent installation of components; 2. The sliding mechanism drives the sleeve to move, so that the components on the bearing assembly are inserted into the sockets on the PCB board. The transmission mechanism rotates the mounting seat, so that the mounting plate is pressed on the PCB board to assist in positioning the PCB board. 3. The electric soldering iron is driven to rotate back and forth through the adjustment mechanism, so as to achieve the contact and separation between the electric soldering iron and the pad. At this time, the welding wire under the electric soldering iron first contacts the pad, and then melts under the high temperature of the electric soldering iron, thereby completing the welding. When it reaches the next welding position, the adjustment mechanism drives the welding wire to move, and the welding wire supplements the melted part. In this way, the amount of melting of the welding wire can be kept consistent, thereby ensuring the welding quality. At the same time, the welding process is automatic, which improves the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a PCB board welding device three-dimensional Figure 1 .

[0015] Figure 2 The present invention is a PCB board welding device three-dimensional Figure 2 .

[0016] Figure 3 This is a schematic diagram of a sliding mechanism of a PCB board welding device of the present invention. Figure 1 .

[0017] Figure 4 This is a schematic diagram of a sliding mechanism of a PCB board welding device of the present invention. Figure 2 .

[0018] Figure 5 It is a schematic diagram of a transmission mechanism of a PCB board welding device of the present invention.

[0019] Figure 6 It is a schematic diagram of placing components of a PCB board welding device of the present invention.

[0020] Figure 7 It is a schematic diagram of a moving mechanism of a PCB board welding device of the present invention.

[0021] Figure 8 It is a schematic diagram of a rotating mechanism of a PCB board welding device of the present invention.

[0022] Fig. 9 It is a schematic diagram of a control mechanism of a PCB board welding device of the present invention.

[0023] Fig.10 It is a schematic diagram of a bearing assembly of a PCB board welding device of the present invention.

[0024] As shown in the figure: 1. Workbench; 11. Support column; 12. Support plate; 13. Limit plate; 14. Extension plate 1; 15. Threaded rod 1; 2. L-shaped plate; 3. U-shaped plate; 31. Extension plate 2; 32. Spring 1; 4. Sleeve 1; 41. Bearing assembly; 42. Spring 2; 43. Bearing plate; 44. Placement block; 45. Groove; 46. Threaded rod 2; 5. Sliding mechanism; 51. Rotating shaft; 52. Gear 1; 53 , gear 2; 54, rack 1; 55, rack 2; 56, ratchet; 57, drive block; 58, ratchet; 59, reset torsion spring; 510, bar; 6, mounting seat; 61, torsion spring 1; 7, transmission mechanism 1; 71, guide roller; 72, connecting plate; 73, connecting rope 1; 8, placement component; 81, electric soldering iron; 82, welding wire ring; 83, slide plate; 84, U-shaped bracket; 85, screw; 86, U-shaped seat; 87 , torsion spring 2; 88, fixed plate; 89, placement plate; 810, ring; 811, sleeve 2; 812, connecting rod; 813, guide tube; 9, adjustment mechanism; 91, moving mechanism; 910, transmission mechanism 2; 911, driving wheel 1; 912, driven wheel 1; 913, transmission belt 1; 92, rotating mechanism; 921, winding roller; 922, gear 3; 923, connecting rope 2; 924, tooth plate; 925, Guide shaft; 93, control mechanism; 931, driving wheel; 932, annular groove; 933, gear four; 934, gear five; 935, gear six; 936, rack five; 937, transmission mechanism three; 9371, driving wheel two; 9372, driven wheel two; 9373, transmission belt two; 94, transmission gear one; 95, rack three; 96, rack four; 97, driving rod; 98, extension block; 99, transmission gear two. DETAILED DESCRIPTION

[0025] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0026] Combined with Figure 1 , Attachment Figure 2As shown, a PCB board welding device comprises a workbench 1, the workbench 1 is provided with support columns 11 arranged correspondingly on both sides, the support columns 11 are provided with support plates 12, the support plates 12 are slidably provided with limit plates 13, an extension plate 14 is provided between the support plates 12, a threaded rod 15 is threadedly connected to the extension plate 14, one end of the threaded rod 15 is rotatably connected to the limit plate 13, L-shaped plates 2 are slidably provided on the two support plates 12, and a placement groove matching the PCB board is provided on the L-shaped plates 2. A U-shaped plate 3 is slidably provided on the workbench 1, and the U-shaped plate 3 is driven by an electric push rod. Extension plates 31 are provided at both ends of the U-shaped plate 3, and a spring 32 is provided between the extension plate 31 and the L-shaped plate 2. A sleeve 4 correspondingly arranged on both sides is movably inserted on the workbench 1, and a bearing component 41 is movably inserted on the sleeve 4, and a spring 2 42 is provided between the bearing component 41 and the sleeve 4. Components are placed on the bearing component 41, and a sliding mechanism 5 is provided on the workbench 1, which drives the sleeve 4 to move up and down by sliding the U-shaped plate 3.

[0027] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 5 As shown, a mounting seat 6 is rotatably provided on one side of the support plate 12, a torsion spring 61 is provided between the mounting seat 6 and the support plate 12, a transmission mechanism 7 is provided on the workbench 1 for moving the U-shaped plate 3 to drive the mounting seat 6 to rotate, a placement component 8 is slidably provided on the mounting seat 6, an electric soldering iron 81 and a welding wire ring 82 are placed on the placement component 8, and an adjustment mechanism 9 is provided on the placement component 8 for moving the placement component 8 to respectively drive the electric soldering iron 81 to reciprocate and move the welding wire on the welding wire ring 82.

[0028] Combined with Figure 1 , Attachment Figure 2 As shown, the PCB board is placed on the support plate 12, the U-shaped plate 3 moves to drive the L-shaped plate 2 to move, the L-shaped plate 2 moves to drive the PCB board to move, the U-shaped plate 3 continues to move to drive the sliding mechanism 5, the sliding mechanism 5 drives the bearing assembly 41 on the sleeve 4 to move upward, so that the components are inserted into the corresponding jacks on the PCB board, the U-shaped plate 3 moves to drive the transmission mechanism 7, the transmission mechanism 7 drives the mounting seat 6 to rotate and make the bottom surface of the mounting seat 6 fit with the surface of the PCB board, the U-shaped plate 3 continues to move to drive the adjustment mechanism 9, the adjustment mechanism 9 drives the electric soldering iron 81 to reciprocate and the welding wire ring 82 to rotate, the welding wire is located at the welding position, the electric soldering iron 81 rotates to contact the welding wire, so that the welding wire melts.

[0029] Working principle of the present invention: In the initial state, the spring 1 32 and the spring 2 42 are in a relaxed state, and the elastic force of the spring 1 32 and the spring 2 42 is relatively small, and the PCB board will not be deformed. First, the PCB board is placed on the support plate 12, and the components are placed on the bearing assembly 41. Then, the position of the PCB board is adjusted according to the position of the component pins on the bearing assembly 41. Then, the threaded rod 15 is rotated to make one side of the limit plate 13 abut against the PCB board. Then, the position of the bearing assembly 41 is adjusted to make the front and rear positions of the pins correspond to the jacks on the PCB board. The position of the placement assembly 8 is adjusted to make the head of the electric soldering iron 81 located above the outermost welding position. No adjustment is required for subsequent components of the same type. After the adjustment is completed, the PCB board is placed on one side of the L-shaped plate 2, so that one end of the PCB board is against the inner wall of the placement groove, and the electric push rod is started. The electric push rod drives the U-shaped plate 3 to move, and the U-shaped plate 3 first drives the L-shaped plate 2 to move. When one end of the PCB board contacts the limit plate 13, the L-shaped plate 2 no longer moves, and the U-shaped plate 3 continues to move. The spring 132 is compressed, and the U-shaped plate 3 drives the sliding mechanism 5, and the sliding mechanism 5 drives the sleeve 14 to move upward, so that the pins of the components are inserted into the through holes on the PCB board, and then the components are abutted against the PCB board. After that, the sleeve 14 continues to move upward, and the spring 142 is compressed. During the upward movement of the sleeve 14, the transmission mechanism 17 is driven, and the transmission mechanism 17 drives the mounting seat 6 to rotate, and the mounting seat 6 rotates and fits the surface of the PCB board, which assists the PCB board. After the U-shaped plate 3 is positioned, the U-shaped plate 3 continues to move. At this time, the sleeve 4 no longer moves. The movement of the U-shaped plate 3 drives the adjusting mechanism 9. The adjusting mechanism 9 drives the electric soldering iron 81 to rotate back and forth, so that the electric soldering iron 81 can periodically contact and separate from the PCB. When the electric soldering iron 81 rotates away from the PCB, the adjusting mechanism 9 drives the soldering wire to move so that one end of the soldering iron 81 is located below one end of the electric soldering iron 81. At the same time, the soldering wire contacts the PCB. When the electric soldering iron 81 rotates toward the PCB, the electric soldering iron 81 contacts the soldering wire and melts it. The melted soldering wire fixes the pin of the component on the PCB. Then the electric soldering iron 81 rotates away from the PCB to continue soldering the next pin. Since two groups are provided, the pins on both sides of the component can be soldered to the PCB.

[0030] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 , Attachment Fig.10As shown, the sliding mechanism 5 includes a rotating shaft 51 rotatably set on the workbench 1, gears 52 are provided at both ends of the rotating shaft 51, and a gear 53 is provided in the middle of the rotating shaft 51. The bottom surface of the sleeve 4 is provided with a rack 54 meshing with the gear 52, and the U-shaped plate 3 is provided with a rack 55 cooperating with the gear 53. The bearing assembly 41 includes a bearing plate 43, a placement block 44 is slidably provided on the bearing plate 43, and a groove 45 for placing components is provided on the placement block 44. A threaded rod 46 for driving the placement block 44 to slide is rotatably provided on the bearing plate 43, and the placement block 44 is driven to move by rotating the threaded rod 46, thereby adjusting the position of the placement block 44.

[0031] Combined with Figure 2 , Attachment Figure 3 , Attachment Figure 4 As shown, ratchets 56 are provided on both sides of the gear 2 53 on the rotating shaft 51, an extension rod is provided on the workbench 1, a pawl 58 is rotatably provided on the extension rod, a reset torsion spring 59 is provided between the pawl 58 and the extension rod, a bar 510 is slidably provided on the extension rod, one end of the bar 510 is in contact with the pawl 58, and a driving block 57 cooperating with the bar 510 is provided on the rack 2 55.

[0032] Working principle of sliding mechanism 5: under initial condition, the reset torsion spring 59 is in a relaxed state, the U-shaped plate 3 moves to drive the rack 2 55 to move, the rack 2 55 drives the gear 2 53 to rotate, the gear 2 53 drives the shaft 51 to rotate, the shaft 51 drives the gears 1 52 at both ends to rotate, the gear 1 52 drives the rack 1 54 to move, the rack 1 54 drives the sleeve 1 4 to move, the sleeve 1 4 drives the bearing assembly 41 to move, while the rack 2 55 moves, the driving block 57 pushes the bar 510 to move downward, the bar 510 drives the ratchet 58 to rotate, and the reset The torsion spring 59 is twisted, and the pawl 58 is separated from the ratchet 56. When the bearing assembly 41 contacts the PCB board, the rack 2 55 is no longer in contact with the gear 2 53, and the driving block 57 is separated from the bar 510. The reset torsion spring 59 drives the pawl 58 to rotate, so that the pawl 58 contacts the ratchet 56. At this time, the shaft 51 cannot rotate, so that the bearing assembly 41 is fixed. When the rack 2 55 returns, the driving block 57 pushes the bar 510, and the bar 510 pushes the pawl 58 to rotate, and the pawl 58 is separated from the ratchet 56, thereby releasing the fixation of the shaft 51.

[0033] Combined with Figure 2 , Attachment Figure 5As shown, the transmission mechanism 7 includes a plurality of guide rollers 71 arranged on the workbench 1, a connecting plate 72 is provided on the U-shaped plate 3, and a connecting rope 73 passing through the guide rollers 71 is provided between the connecting plate 72 and the mounting seat 6. When the sleeve 4 rises, the sleeve 4 drives the connecting plate 72 to move upward, the connecting plate 72 drives the connecting rope 73 to move upward, and the connecting rope 73 drives the mounting seat 6 to rotate through the two guide rollers 71, so that the bottom surface of the mounting seat 6 fits with the upper surface of the PCB board.

[0034] Combined with Figure 1 , Attachment Figure 2 , Attachment Figure 5 , Attachment Figure 6 , Attachment Figure 7 , Attachment Figure 8 , Attachment Fig. 9 As shown, the placement assembly 8 includes a slide plate 83 slidably arranged on the mounting seat 6, a U-shaped bracket 84 is slidably arranged on the slide plate 83, a screw 85 for driving the U-shaped bracket 84 to slide is rotatably arranged on the slide plate 83, the screw 85 is rotatably connected to the U-shaped bracket 84, a U-shaped seat 86 is rotatably arranged on the U-shaped bracket 84, a torsion spring 87 is arranged between the U-shaped seat 86 and the U-shaped bracket 84, the electric soldering iron 81 is fixedly arranged on the U-shaped seat 86, a fixing plate 88 is arranged on the mounting seat 6, and the fixing plate 88 is A side sliding placement plate 89 is provided, a fixed shaft is provided on the bottom surface of the placement plate 89, a welding wire ring 82 is rotatably set on the fixed shaft, a circular ring 810 is provided on the electric soldering iron 81, a sleeve 2 811 is provided on the circular ring 810, a connecting rod 812 is hinged on the placement plate 89, and the connecting rod 812 is sleeved on the sleeve 2 811, a guide tube 813 is provided on one side of the placement plate 89, and the welding wire on the welding wire ring 82 extends to the bottom of one end of the electric soldering iron 81 through the guide tube 813, and a reset spring is provided between the mounting seat 6 and the slide plate 83.

[0035] Working principle of the placement component 8: In the initial state, the reset spring and the second torsion spring 87 are in a relaxed state. When the position of the electric soldering iron 81 needs to be adjusted, the position of the U-shaped seat 86 can be adjusted by rotating the screw 85. When the mounting seat 6 is in contact with the surface of the PCB board, the mounting seat 6 is parallel to the PCB board, and the second torsion spring 87 is twisted. One end of the electric soldering iron 81 contacts the first welding position, and the welding wire melts to complete the welding of the first welding position. The slide plate 83 moves the U-shaped seat 86 thereon, thereby driving the electric soldering iron 81 to move. The movement of the electric soldering iron 81 drives the ring 810 to move. The ring 810 drives the connecting rod 812. The connecting rod 812 drives the placement plate 89, thereby driving the welding wire ring 82 to move. The welding wire is always fixed with the electric soldering iron 81. During the movement of the slide plate 83, the electric soldering iron 81 rotates away from the PCB board, the torsion spring 87 twists, and the welding wire moves at the same time. The welding wire extends to the bottom of the electric soldering iron 81 under the action of the guide tube 813 to supplement the melted part. After the electric soldering iron 81 rotates a certain angle, the torsion spring 87 drives the electric soldering iron 81 to rotate toward the PCB board. At this time, the welding wire is supplemented, and the electric soldering iron 81 drives the welding wire to contact and melt the PCB board, thereby completing the welding of the second welding position, and then continue welding, and move the other side away from the same. After the last position is welded, the reset spring pushes the slide plate 83 to reset, thereby continuing the subsequent welding.

[0036] Combined with Figure 2 , Attachment Figure 5 , Attachment Figure 6 , Attachment Figure 7 , Attachment Figure 8 , Attachment Fig. 9 As shown, the adjusting mechanism 9 includes a moving mechanism 91 for controlling the movement of the slide plate 83, a rotating mechanism 92 for controlling the reciprocating rotation of the electric soldering iron 81, and a control mechanism 93 for controlling the welding wire to move to the bottom of one end of the electric soldering iron 81. The moving mechanism 91 includes a transmission gear 1 94 rotatably arranged on both sides of the U-shaped plate 3, a rack 3 95 matched with the transmission gear 1 94 is provided on the U-shaped plate 3, a rack 4 96 is slidably provided on the workbench 1, a driving rod 97 for pushing the slide plate 83 to move is provided on the rack 4 96, an extension block 98 matched with the driving rod 97 is provided on the bottom surface of the slide plate 83, a transmission gear 2 99 meshing with the rack 4 96 is rotatably provided on the workbench 1, and a transmission mechanism 2 910 is provided between the transmission gear 1 94 and the transmission gear 2 99, which drives the transmission gear 2 99 to rotate by the transmission gear 1 94.

[0037] The transmission mechanism 2 910 includes a driving wheel 1 911 disposed on the bottom surface of a transmission gear 1 94 , a driven wheel 1 912 is disposed on the transmission gear 2 99 , and a transmission belt 1 913 is disposed between the driving wheel 1 911 and the driven wheel 1 912 .

[0038] Working principle of moving mechanism 91: the movement of U-shaped plate 3 drives rack three 95, rack three 95 drives transmission gear one 94 to rotate, and through driving wheel one 911, driven wheel one 912 and transmission belt one 913, transmission gear two 99 is driven to rotate, transmission gear two 99 drives rack four 96 to move, rack four 96 drives driving rod 97 to move, driving rod 97 pushes extension block 98 to move, and extension block 98 drives slide plate 83 to move.

[0039] Combined with Figure 5 , Attachment Figure 6 , Attachment Figure 7 , Attachment Figure 8 , Attachment Fig. 9 As shown, the rotating mechanism 92 includes a winding roller 921 rotatably set on a U-shaped bracket 84, a gear three 922 is provided on the winding roller 921, a connecting rope two 923 is provided between the winding roller 921 and the U-shaped seat 86, a guide shaft 925 cooperating with the connecting rope two 923 is provided on the U-shaped bracket 84, and a plurality of tooth plates 924 cooperating with the gear three 922 are provided on the fixed plate 88, and gaps are left between adjacent tooth plates 924.

[0040] Working principle of rotating mechanism 92: slide plate 83 moves, and U-shaped bracket 84 thereon moves. Under the action of tooth plate 924, gear three 922 rotates, and winding roller 921 rotates to wind connecting rope two 923. The length of connecting rope two 923 is reduced, pulling U-shaped seat 86 to rotate, and torsion spring two 87 torsion. When gear three 922 is in the gap between adjacent tooth plates 924, torsion spring two 87 drives U-shaped seat 86 to reset, thereby realizing reciprocating rotation of electric soldering iron 81. The distance between pins is fixed. By replacing tooth plates 924 with different gaps, it can adapt to various models.

[0041] Combined with Figure 5 , Attachment Figure 6 , Attachment Figure 7 , Attachment Figure 8 , Attachment Fig. 9 As shown, the control mechanism 93 includes two driving wheels 931 rotatably arranged on the placement plate 89, the two driving wheels 931 are tangent to each other, the driving wheels 931 are provided with an annular groove 932 that cooperates with the welding wire, the welding wire is located between the two driving wheels 931, the driving wheels 931 are provided with a gear four 933, the two gear fours 933 are meshed, the placement plate 89 is rotatably provided with a gear five 934 that meshes with one of the gear fours 933, the placement plate 89 is rotatably provided with a gear six 935, the fixed plate 88 is slidably provided with a rack five 936, and a transmission mechanism three 937 is provided between the gear five 934 and the gear six 935, which drives the gear five 934 to rotate by the gear six 935.

[0042] The transmission mechanism three 937 includes a driving wheel two 9371 arranged on the gear six 935, a driven wheel two 9372 is arranged on the gear five 934, and a transmission belt two 9373 is arranged between the driving wheel two 9371 and the driven wheel two 9372.

[0043] Working principle of control mechanism 93: movement of slide plate 83 drives U-shaped seat 86 to move, U-shaped seat 86 drives electric soldering iron 81 to move, electric soldering iron 81 drives placement plate 89 to move through circular ring 810, sleeve 2 811 and connecting rod 812, gear 6 935 rotates under the action of rack 5 936, gear 6 935 drives gear 5 934 to rotate through driving wheel 2 9371, driven wheel 2 9372 and transmission belt 2 9373, gear 5 934 drives gear 4 933 to rotate, gear 4 933 drives another gear 4 933 to rotate, thereby driving two driving wheels 931 to rotate, driving wheel 931 drives welding wire to move toward guide tube 813 through annular groove 932, and then comes out from the other end of guide tube 813, welding wire ring 82 rotates, thereby realizing the movement of welding wire.

[0044] In specific use, the PCB board is placed in the placement groove on the L-shaped plate 2, and the components are placed in the groove 45 on the bearing assembly 41, and then the electric push rod is started, the electric push rod drives the U-shaped plate 3 to move, the U-shaped plate 3 drives the L-shaped plate 2 to move, and the L-shaped plate 2 pushes the PCB board to move. When the other end of the PCB board contacts the limit plate 13, the L-shaped plate 2 no longer moves, and the U-shaped plate 3 continues to move, and the sleeve 4 is driven to move upward through the sliding mechanism 5, and the sleeve 4 drives the components on the bearing assembly 41 to move upward. When the pins of the components are inserted into the jacks of the PCB board, the bearing assembly 41 no longer moves. During the upward movement of the sleeve 4, the two mounting seats 6 are driven to rotate through the transmission mechanism 7. When the bearing assembly 41 no longer moves, the bottom surface of the mounting seat 6 is in contact with the PCB board, the electric soldering iron 81 is in contact with the surface of the PCB board, the welding wire melts, and the first welding point is completed. During welding, the U-shaped plate 3 continues to move to drive the adjusting mechanism 9, which drives the sliding plate 83 to move through the moving mechanism 91. The movement of the sliding plate 83 drives the rotating mechanism 92 and the control mechanism 93, so that the electric soldering iron 81 rotates back and forth and the welding wire moves. When the electric soldering iron 81 rotates away from the PCB board, the welding wire moves to supplement the missing part of the melting, and then the electric soldering iron 81 moves toward the PCB board. The electric soldering iron 81 presses the welding wire to make it fit with the PCB board and melt it at the welding point, and then continues to weld the subsequent welding points. When the welding is completed, the rack five 936 is pushed upward so that it does not mesh with the gear six 935, and the electric push rod is reset. When the reset is completed, the welding wire is pulled so that one end of it is located below the electric soldering iron 81 to facilitate subsequent welding, and then the rack five 936 is released. The rack five 936 moves downward under the action of gravity and meshes with the gear six 935 to complete the reset operation.

[0045] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A PCB board welding device, comprising a workbench (1), the workbench (1) being provided with support columns (11) arranged correspondingly on both sides, the support columns (11) being provided with a support plate (12), and a limit plate (13) being slidably provided on the support plate (12), characterized in that: An L-shaped plate (2) is slidably provided on the two support plates (12), a U-shaped plate (3) is slidably provided on the workbench (1), two extension plates (31) are provided at both ends of the U-shaped plate (3), a spring (32) is provided between the extension plate (31) and the L-shaped plate (2), a sleeve (4) correspondingly arranged on both sides is movably plugged on the workbench (1), a bearing assembly (41) is movably plugged on the sleeve (4), a spring (42) is provided between the bearing assembly (41) and the sleeve (4), components are placed on the bearing assembly (41), and a sliding mechanism (5) is provided on the workbench (1) for driving the sleeve (4) to move up and down by the U-shaped plate (3); A mounting seat (6) is rotatably provided on one side of the support plate (12), a torsion spring (61) is provided between the mounting seat (6) and the support plate (12), a transmission mechanism (7) is provided on the workbench (1) for driving the mounting seat (6) to rotate by moving the U-shaped plate (3), a placement component (8) is slidably provided on the mounting seat (6), an electric soldering iron (81) and a welding wire ring (82) are placed on the placement component (8), and an adjustment mechanism (9) is provided on the placement component (8) for driving the electric soldering iron (81) to reciprocate and the welding wire on the welding wire ring (82) to move by the placement component (8); The PCB board is placed on the support plate (12), the U-shaped plate (3) moves to drive the L-shaped plate (2), the L-shaped plate (2) moves to drive the PCB board to move, the U-shaped plate (3) continues to move to drive the sliding mechanism (5), the sliding mechanism (5) drives the bearing assembly (41) on the sleeve (4) to move upward, so that the components are inserted into the corresponding sockets on the PCB board, the U-shaped plate (3) moves to drive the transmission mechanism (7), the transmission mechanism (7) drives the mounting seat (6) to rotate and make the bottom surface of the mounting seat (6) fit with the surface of the PCB board, the U-shaped plate (3) continues to move to drive the adjustment mechanism (9), the adjustment mechanism (9) drives the electric soldering iron (81) to reciprocate and the welding wire ring (82) to rotate, the welding wire is located at the welding position, the electric soldering iron (81) rotates to contact the welding wire, and the welding wire is melted.

2. A PCB board welding device according to claim 1, characterized in that: The sliding mechanism (5) comprises a rotating shaft (51) rotatably arranged on the workbench (1), gears 1 (52) are provided at both ends of the rotating shaft (51), gears 2 (53) are provided in the middle of the rotating shaft (51), racks 1 (54) meshing with gears 1 (52) are provided on the bottom surface of the sleeve 1 (4), and racks 2 (55) cooperating with gears 2 (53) are provided on the U-shaped plate (3).

3. A PCB board welding device according to claim 1, characterized in that: The transmission mechanism (7) comprises a plurality of guide rollers (71) arranged on the workbench (1), a connecting plate (72) is arranged on the U-shaped plate (3), and a connecting rope (73) passing through the guide rollers (71) is arranged between the connecting plate (72) and the mounting seat (6).

4. A PCB board welding device according to claim 1, characterized in that: The placement assembly (8) comprises a slide plate (83) slidably arranged on the mounting seat (6); a U-shaped bracket (84) is slidably arranged on the slide plate (83); a screw rod (85) is rotatably arranged on the slide plate (83) for driving the U-shaped bracket (84) to slide; the screw rod (85) is rotatably connected to the U-shaped bracket (84); a U-shaped seat (86) is rotatably arranged on the U-shaped bracket (84); a torsion spring (87) is arranged between the U-shaped seat (86) and the U-shaped bracket (84); the electric soldering iron (81) is fixedly arranged on the U-shaped seat (86); and a fixing plate (88) is arranged on the mounting seat (6). ), a placement plate (89) is slidably provided on one side of the fixed plate (88), a fixed shaft is provided on the bottom surface of the placement plate (89), a welding wire ring (82) is rotatably provided on the fixed shaft, a circular ring (810) is provided on the electric soldering iron (81), a second sleeve (811) is provided on the circular ring (810), a connecting rod (812) is hinged on the placement plate (89), the connecting rod (812) is sleeved on the second sleeve (811), a guide tube (813) is provided on one side of the placement plate (89), and the welding wire on the welding wire ring (82) extends to the bottom of one end of the electric soldering iron (81) through the guide tube (813).

5. A PCB board welding device according to claim 4, characterized in that: The regulating mechanism (9) comprises a moving mechanism (91) for controlling the movement of the slide plate (83), a rotating mechanism (92) for controlling the reciprocating rotation of the electric soldering iron (81), and a control mechanism (93) for controlling the soldering wire to move to below one end of the electric soldering iron (81). The moving mechanism (91) comprises a transmission gear 1 (94) rotatably arranged on both sides of the U-shaped plate (3), a rack 3 (95) cooperating with the transmission gear 1 (94) is arranged on the U-shaped plate (3), a rack 4 (96) is slidably arranged on the workbench (1), a driving rod (97) for pushing the slide plate (83) to move is arranged on the rack 4 (96), an extension block (98) cooperating with the driving rod (97) is arranged on the bottom surface of the slide plate (83), a transmission gear 2 (99) meshing with the rack 4 (96) is rotatably arranged on the workbench (1), and a transmission mechanism 2 (910) is arranged between the transmission gear 1 (94) and the transmission gear 2 (99) so that the transmission gear 1 (94) rotates and drives the transmission gear 2 (99) to rotate.

6. A PCB board welding device according to claim 5, characterized in that: The rotating mechanism (92) comprises a winding roller (921) rotatably arranged on a U-shaped bracket (84), a gear three (922) being provided on the winding roller (921), a connecting rope two (923) being provided between the winding roller (921) and the U-shaped seat (86), a guide shaft (925) cooperating with the connecting rope two (923) being provided on the U-shaped bracket (84), and a plurality of tooth plates (924) cooperating with the gear three (922) being provided on the fixing plate (88), with gaps being left between adjacent tooth plates (924).

7. A PCB board welding device according to claim 5, characterized in that: The control mechanism (93) comprises two driving wheels (931) rotatably arranged on the placement plate (89), the two driving wheels (931) are tangent to each other, the driving wheels (931) are provided with an annular groove (932) that cooperates with the welding wire, the welding wire is located between the two driving wheels (931), the driving wheels (931) are provided with a gear four (933), the two gear fours (933) are meshed, the placement plate (89) is rotatably provided with a gear five (934) that meshes with one of the gear fours (933), the placement plate (89) is rotatably provided with a gear six (935), the fixed plate (88) is slidably provided with a rack five (936) that meshes with the gear six (935), and a transmission mechanism three (937) is provided between the gear five (934) and the gear six (935), the gear six (935) is rotated to drive the gear five (934) to rotate.

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