Automatic welding device and process for emergency lamp circuit board

Abstract

The invention discloses an emergency lamp circuit board automatic welding device and technology, and belongs to the technical field of emergency lamp circuit board machining. The emergency lamp circuit board automatic welding device comprises a wave-soldering pool, a welding lifting moving mechanism, a welding circuit board fixing mechanism, an electrical component fixing mechanism and a welding pin cutting mechanism; the welding lifting moving mechanism is located above the wave-soldering pool and can drive a circuit board to horizontally move along the wave-soldering pool, and the welding circuit board fixing mechanism is arranged at the lifting end of the welding lifting moving mechanism. The electric appliance element fixing mechanism is also located at the lifting end of the welding lifting moving mechanism, the electric appliance element fixing mechanism is located above the welding circuit board fixing mechanism, and the welding pin cutting mechanism is located beside the wave-soldering pool. According to the invention, automatic welding operation of the emergency lamp circuit board can be realized.

Description

Technical Field

[0001] The invention belongs to the technical field of emergency light circuit board processing, and in particular relates to an emergency light circuit board automatic welding device and a process thereof. Background Art

[0002] Emergency lights are a general term for lamps used for emergency lighting. When producing circuit boards in emergency lights, multiple electronic component plug-ins need to be soldered to the circuit board through wave soldering. Currently, before wave soldering, workers or automated equipment are required to insert multiple electronic component plug-ins into corresponding positions on the circuit board, and then move the circuit board to the wave soldering tin tank, and solder multiple electronic component plug-ins to the circuit board through molten tin. When soldering electronic components, they are generally plugged into the circuit board, and the pins of the electronic components are passed through the circuit board. Then, the pins are dropped into the wave soldering pool to solder the electronic components to the circuit board.

[0003] However, the prior art still has the following problems: after the electronic components are plugged into the circuit board, the pins of the electronic components are not fixed before soldering, and when the pins of the electronic components are moved downward into the wave soldering pool, the positions of the pins are easily shifted, causing the electronic components to tilt when soldering the pins of the electronic components, and when soldering various electronic components, the lengths and heights of the various electronic components are different, affecting the fixation and positioning of the various electronic components. Summary of the invention

[0004] The embodiment of the present invention provides an automatic welding device for an emergency light circuit board and a process thereof to solve the problems in the prior art.

[0005] The embodiment of the present invention adopts the following technical scheme: an automatic soldering device for emergency light circuit boards, comprising a wave soldering pool, a welding lifting and moving mechanism, a welding circuit board fixing mechanism, an electrical component fixing mechanism and a welding pin cutting mechanism, wherein the wave soldering pool is horizontally arranged, the welding lifting and moving mechanism is located above the wave soldering pool, and the welding lifting and moving mechanism can drive the circuit board to move horizontally along the wave soldering pool, the welding circuit board fixing mechanism is arranged on the lifting end of the welding lifting and moving mechanism, the electrical component fixing mechanism is also located on the lifting end of the welding lifting and moving mechanism, the electrical component fixing mechanism is located above the welding circuit board fixing mechanism, and the welding pin cutting mechanism is located next to the wave soldering pool.

[0006] Furthermore, the welding lifting and moving mechanism includes a lifting frame, two horizontal moving slides and two lifting seats. The two horizontal moving slides are symmetrically arranged on both sides of the wave soldering pool. The two lifting seats are respectively vertically arranged on the moving ends of the two horizontal moving slides. Each of the lifting seats is provided with a lifting sprocket symmetrically arranged up and down. The two lifting sprocket sleeves are provided with chains. The side wall of the lifting seat is provided with a lifting motor transmission-connected to the lifting sprocket. The two ends of the lifting frame are respectively connected to the two chains, and the two ends of the lifting frame are respectively slidably matched with the two lifting seats.

[0007] Furthermore, the welding circuit board fixing mechanism includes a fixing frame and two fixing parts, the fixing frame is horizontally arranged at the bottom of the lifting frame, four bearing plates are arranged on the fixing frame, and two fixing parts are horizontally arranged diagonally on the fixing frame, each of the fixing parts includes a fixed electric cylinder, a limit clamp and a protective cover, the fixed electric cylinder is horizontally arranged on the side wall of the fixed frame, the limit clamp is slidably connected to the fixed frame and the limit clamp is connected to the telescopic end of the fixed electric cylinder, the limit clamp is provided with a limit groove, and the protective cover is horizontally arranged on the fixed electric cylinder.

[0008] Furthermore, the electrical component fixing mechanism includes a mobile electric cylinder, a mobile plate, two mobile rods and a plurality of retractable limit members, the mobile electric cylinder is vertically arranged on the top of the lifting frame, the mobile plate is horizontally arranged on the telescopic end of the mobile electric cylinder, the two mobile rods are symmetrically arranged on the top of the mobile plate and the mobile rods are slidably matched with the lifting frame, and the plurality of limit members are equidistantly arranged at the bottom of the mobile plate.

[0009] Furthermore, several of the limit members are arranged at equal intervals at the bottom of the movable plate, and each adjacent limit member slides up and down together. Each limit member includes a limit spring and a limit block. The top of the limit spring is connected to the bottom of the movable plate, and the limit block is connected to the limit spring. Two sliders are respectively provided on two adjacent side walls of the limit block, and sliding grooves are respectively provided on the other two adjacent side walls of the limit block. The two sliders on the adjacent limit members slide in the sliding grooves, and a protective pad is provided at the bottom of the limit block.

[0010] Furthermore, the welding pin cutting mechanism includes a grinding motor, a grinding roller, two support seats, two adjusting electric cylinders and two adjusting blocks. The two support seats are symmetrically arranged, and the two adjusting electric cylinders are respectively vertically arranged on the support seats. The two adjusting blocks are respectively slidably connected to the support seats, and the bottoms of the two adjusting blocks are respectively connected to the telescopic ends of the two adjusting electric cylinders. Three dust suction fans are arranged at equal intervals between the two support seats. The grinding motor is located on the adjusting block and the main shaft of the grinding motor is transmission-connected to the grinding roller.

[0011] Furthermore, a mounting frame is provided on the wave soldering pool, and a suction fan is provided on the mounting frame.

[0012] An automatic welding device for emergency light circuit board and a process thereof, the welding process comprising the following steps:

[0013] The first step is to place the circuit board with all the electronic components plugged in horizontally on the four bearing plates on the fixed frame. At this time, the position of the limit fixture is driven to move by the fixed electric cylinder, and the limit groove on the limit fixture is moved to the circuit board to fix and limit the horizontally placed circuit board.

[0014] In the second step, when fixing electronic components of different heights, the mobile electric cylinder drives the position of the mobile plate to move downward, thereby driving the positions of several limit pieces to move downward, so that the protective pad at the bottom of the limit block contacts the various electronic components. Since a limit spring is provided on the top of the limit block, when limiting electronic components of different heights, the limit block can be moved by the expansion and contraction of the limit springs at different positions, and the electronic components plugged into the circuit board are limited to prevent the plugged electronic components from tilting and affecting the welding effect during the process of the circuit board moving downward to the wave soldering pool.

[0015] In the third step, when the electronic components are moved downward into the wave soldering pool, the lifting motor drives the lifting sprocket to rotate, thereby driving the position of the chain to rotate, thereby driving the position of the lifting frame to move up and down in the vertical direction, and horizontally move the circuit board on the fixed frame into the wave soldering pool, perform soldering operations on the electronic components, and solder various electronic components on the circuit board;

[0016] The fourth step is to move the electronic components upward through the welding lifting and moving mechanism after the components are welded, move them out of the wave soldering pool, and then drive the circuit board to move outward through the two horizontal sliding tables;

[0017] The fifth step is that when the welding lifting and moving mechanism works to drive the position of the circuit board to move toward the welding pin cutting mechanism, the telescopic ends of the two adjusting electric cylinders move simultaneously to drive the positions of the two adjusting blocks to move, and the positions of the two adjusting blocks move to drive the grinding rollers to rotate. When grinding the pins of various electronic components, the positions of the grinding rollers can be adjusted according to the different lengths of the pins of the electronic components to perform grinding operations on the pins of various electronic components. The grinding motor works to drive the grinding rollers to rotate, and the pins of the electronic components are ground. During grinding, three dust suction fans are used to absorb the dust generated by grinding.

[0018] The sixth step is that when the electronic components are welded, the suction fan works to recycle the waste gas generated by welding to prevent the waste water from floating upward onto the circuit board and affecting the welding of the circuit board.

[0019] At least one of the above technical solutions adopted in the embodiments of the present invention can achieve the following beneficial effects:

[0020] Firstly, when fixing electronic components of different heights, the present invention drives the movable plate to move downward by the operation of the movable electric cylinder, thereby driving the positions of a plurality of limit members to move downward, so that the protective pad at the bottom of the limit block contacts the various electronic components. Since a limit spring is provided on the top of the limit block, when limiting electronic components of different heights, the limit block can be moved by the expansion and contraction of the limit springs at different positions, so as to limit the electronic components plugged into the circuit board, thereby preventing the plugged electronic components from tilting and affecting the welding effect during the process of the circuit board moving downward to the wave soldering pool.

[0021] Secondly, the present invention places the circuit board with the electronic components plugged in horizontally on the four supporting plates on the fixed frame. At this time, the position of the limit clamp is driven to move by the fixed electric cylinder, and the limit groove on the limit clamp is moved to the circuit board, so as to fix and limit the horizontally placed circuit board, so as to prevent the position deviation from affecting the processing accuracy when the circuit board is processed.

[0022] Thirdly, the telescopic ends of the two adjusting electric cylinders in the present invention move simultaneously, thereby driving the positions of the two adjusting blocks to move, and the positions of the two adjusting blocks move, thereby driving the grinding roller to rotate. When grinding the pins of various electronic components, the position of the grinding roller can be adjusted according to the different lengths of the pins of the electronic components to perform grinding operations on the pins of various electronic components. When grinding, the grinding roller is preferably moved to the lowest point, so that the longest pin on the electronic component can be polished. While grinding, the two adjusting electric cylinders drive the grinding roller to move upward, and the pins of the electronic components of different lengths are polished in turn. The grinding motor drives the grinding roller to rotate, and the pins of the electronic components are polished. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 It is a schematic diagram of a first three-dimensional structure of the present invention;

[0025] Figure 2 It is a schematic diagram of a second three-dimensional structure of the present invention;

[0026] Figure 3 It is a three-dimensional structural schematic diagram of the welding lifting and moving mechanism in the present invention;

[0027] Figure 4 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the limiting member in the present invention;

[0029] Figure 6 It is a three-dimensional structural schematic diagram of the welding circuit board fixing mechanism in the present invention;

[0030] Figure 7 It is a three-dimensional structural schematic diagram of the welding pin cutting mechanism in the present invention;

[0031] Reference numerals

[0032] Wave soldering pool 1, welding lifting and moving mechanism 2, lifting frame 21, horizontal moving slide 22, lifting seat 23, lifting motor 24, lifting sprocket 25, chain 26, welding circuit board fixing mechanism 3, fixing frame 31, bearing plate 32, fixed electric cylinder 33, limiting clamp 34, protective cover 35, electrical component fixing mechanism 4, moving electric cylinder 41, moving plate 42, moving rod 43, limiting piece 44, limiting spring 45, limiting block 46, slider 47, slide 48, welding pin cutting mechanism 5, grinding motor 51, grinding sand roller 52, supporting seat 53, adjusting electric cylinder 54, adjusting block 55, dust suction fan 56, mounting frame 61, suction fan 62. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0034] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0035] Reference Figures 1 to 7As shown, an embodiment of the present invention provides an automatic soldering device for emergency light circuit boards, including a wave soldering pool 1, a soldering lifting and moving mechanism 2, a soldering circuit board fixing mechanism 3, an electrical component fixing mechanism 4, and a soldering pin cutting mechanism 5. The wave soldering pool 1 is horizontally arranged, the soldering lifting and moving mechanism 2 is located above the wave soldering pool 1, and the soldering lifting and moving mechanism 2 can drive the circuit board to move horizontally along the wave soldering pool 1. The soldering circuit board fixing mechanism 3 is arranged on the lifting end of the soldering lifting and moving mechanism 2, the electrical component fixing mechanism 4 is also located on the lifting end of the soldering lifting and moving mechanism 2, the electrical component fixing mechanism 4 is located above the soldering circuit board fixing mechanism 3, and the soldering pin cutting mechanism 5 is located beside the wave soldering pool 1. The wave soldering pool 1 belongs to the prior art. When soldering the pins of the electronic components, the pins on the circuit board and the electronic components can be dropped into the wave soldering pool 1, and the electronic components are soldered by the wave soldering pool 1 to solder the electronic components to the circuit board.

[0036] Specifically, the welding lifting and moving mechanism 2 includes a lifting frame 21, two horizontal movable slides 22 and two lifting seats 23. The two horizontal movable slides 22 are symmetrically arranged on both sides of the wave soldering pool 1. The two lifting seats 23 are respectively vertically arranged on the moving ends of the two horizontal movable slides 22. Each of the lifting seats 23 is provided with a lifting sprocket 25 symmetrically arranged up and down. The two lifting sprockets 25 are sleeved with chains 26. The side wall of the lifting seat 23 is provided with a lifting motor 24 that is transmission-connected to the lifting sprocket 25. The two ends of the lifting frame 21 are respectively connected to the two chains 26, and the two ends of the lifting frame 21 are respectively slidably matched with the two lifting seats 23.

[0037] In this embodiment, when the electronic components are moved downward into the wave soldering pool 1, the lifting motor 24 works to drive the lifting sprocket 25 to rotate, thereby driving the position of the chain 26 to rotate, thereby driving the position of the lifting frame 21 to move up and down in the vertical direction, and the circuit board on the fixed frame 31 is horizontally moved into the wave soldering pool 1, and the electronic components are welded. Various electronic components are welded on the circuit board. After the welding of the electronic components is completed, the position of the circuit board can be moved to the position of the pin grinding through the position of the two horizontal moving slides 22, and the electronic components can be ground in cooperation with the welding pin cutting mechanism 5.

[0038] Specifically, the welding circuit board fixing mechanism 3 includes a fixing frame 31 and two fixing parts. The fixing frame 31 is horizontally arranged at the bottom of the lifting frame 21. Four supporting plates 32 are arranged on the fixing frame 31. Two fixing parts are horizontally arranged diagonally on the fixing frame 31. Each of the fixing parts includes a fixed electric cylinder 33, a limiting clamp 34 and a protective cover 35. The fixed electric cylinder 33 is horizontally arranged on the side wall of the fixing frame 31. The limiting clamp 34 is slidably connected to the fixing frame 31 and the limiting clamp 34 is connected to the telescopic end of the fixed electric cylinder 33. The limiting clamp 34 is provided with a limiting groove. The protective cover 35 is horizontally arranged on the fixed electric cylinder 33; the protective cover 35 can protect the fixed electric cylinder 33 to prevent the fixed electric cylinder 33 from falling into the wave soldering pool 1 and causing damage to the wave soldering pool 1.

[0039] In this embodiment, the circuit board with the electronic components plugged in is horizontally placed on the four supporting plates 32 on the fixed frame 31. At this time, the position of the limiting clamp 34 is driven to move by the fixed electric cylinder 33, and the limiting groove on the limiting clamp 34 is moved to the circuit board to fix and limit the horizontally placed circuit board.

[0040] Specifically, the electrical component fixing mechanism 4 includes a moving electric cylinder 41, a moving plate 42, two moving rods 43 and a plurality of retractable stoppers 44, wherein the moving electric cylinder 41 is vertically arranged on the top of the lifting frame 21, the moving plate 42 is horizontally arranged on the telescopic end of the moving electric cylinder 41, the two moving rods 43 are symmetrically arranged on the top of the moving plate 42 and the moving rods 43 are slidably matched with the lifting frame 21, and a plurality of the stoppers 44 are equidistantly arranged at the bottom of the moving plate 42; a plurality of the stoppers 44 are equidistantly arranged at the bottom of the moving plate 42, and each adjacent stopper 44 is slidably matched up and down. , so that the limit block 45 will not shake when moving up and down, and will not affect the fixation and limitation of the electronic components. Each of the limit members 44 includes a limit spring 45 and a limit block 46. The top of the limit spring 45 is connected to the bottom of the movable plate 42, and the limit block 46 is connected to the limit spring 45. Two sliders 47 are respectively provided on the two adjacent side walls of the limit block 46, and sliding grooves 48 are respectively provided on the other two adjacent side walls of the limit block 46. The two sliders 47 on the adjacent limit members 44 slide in the sliding grooves 48, and a protective pad is provided at the bottom of the limit block 46.

[0041] In this embodiment, when fixing electronic components of various heights, the movable electric cylinder 41 drives the movable plate 42 to move downward, thereby driving the positions of several limit members 44 to move downward, so that the protective pad at the bottom of the limit block 46 contacts the various electronic components. Since a limit spring 45 is provided on the top of the limit block 46, when limiting electronic components of various heights, the limit block 46 can be moved by the extension and contraction of the limit springs 45 at different positions, so as to limit the electronic components plugged into the circuit board, thereby preventing the plugged electronic components from tilting and affecting the welding effect during the process of the circuit board moving downward to the wave soldering pool 1.

[0042] Specifically, the welding pin cutting mechanism 5 includes a grinding motor 51, a grinding roller 52, two support seats 53, two adjusting electric cylinders 54 and two adjusting blocks 55. The two support seats 53 are symmetrically arranged, and the two adjusting electric cylinders 54 are respectively vertically arranged on the support seats 53. The two adjusting blocks 55 are respectively slidably connected to the support seats 53. The bottoms of the two adjusting blocks 55 are respectively connected to the telescopic ends of the two adjusting electric cylinders 54. Three dust suction fans 56 are arranged at equal intervals between the two support seats 53. The grinding motor 51 is located on the adjusting block 55 and the main shaft of the grinding motor 51 is transmission-connected to the grinding roller 52.

[0043] In this embodiment, the telescopic ends of the two adjusting electric cylinders 54 move simultaneously to drive the positions of the two adjusting blocks 55 to move, and the positions of the two adjusting blocks 55 move to drive the grinding roller 52 to rotate. When grinding the pins of various electronic components, the position of the grinding roller 52 can be adjusted according to the different lengths of the pins of the electronic components to perform grinding operations on the pins of various electronic components. When grinding, the grinding roller 52 is first moved to the lowest point, and the longest pin on the electronic component can be polished. While grinding, the two adjusting electric cylinders 54 drive the grinding roller 52 to move upward, and the pins of the electronic components of different lengths are polished in turn. The grinding motor 51 drives the grinding roller 52 to rotate, and the pins of the electronic components are polished. During grinding, three dust suction fans 56 are used to absorb the dust generated by grinding.

[0044] Specifically, a mounting frame 61 is provided on the wave soldering pool 1, and a suction fan 62 is provided on the mounting frame 61; the suction fan 62 recovers the waste gas generated by welding to prevent waste water from floating upward onto the circuit board and affecting the welding of the circuit board.

[0045] An automatic welding device for emergency light circuit board and a process thereof, the welding process comprising the following steps:

[0046] In the first step, the circuit board with all the electronic components plugged in is horizontally placed on the four bearing plates 32 on the fixed frame 31. At this time, the position of the limiting clamp 34 is moved by the fixed electric cylinder 33, and the limiting groove on the limiting clamp 34 is moved to the circuit board to fix and limit the horizontally placed circuit board.

[0047] In the second step, when fixing electronic components of different heights, the moving electric cylinder 41 drives the moving plate 42 to move downward, thereby driving the positions of the plurality of limit members 44 to move downward, so that the protective pad at the bottom of the limit block 46 contacts the various electronic components. Since a limit spring 45 is provided on the top of the limit block 46, when limiting electronic components of different heights, the limit block 46 can be moved by the expansion and contraction of the limit springs 45 at different positions, so as to limit the electronic components plugged into the circuit board, thereby preventing the plugged electronic components from tilting and affecting the welding effect when the circuit board moves downward to the wave soldering pool 1.

[0048] In the third step, when the electronic components are moved downward into the wave soldering pool 1, the lifting motor 24 drives the lifting sprocket 25 to rotate, thereby driving the position of the chain 26 to rotate, thereby driving the position of the lifting frame 21 to move up and down in the vertical direction, and horizontally move the circuit board on the fixed frame 31 into the wave soldering pool 1, perform soldering operations on the electronic components, and solder various electronic components on the circuit board;

[0049] Step 4: After the electronic components are welded, the welding lifting and moving mechanism 2 is moved upward to move out of the wave soldering pool 1, and then the position of the circuit board is driven to move outward by the two horizontal moving slides 22;

[0050] In the fifth step, when the welding lifting and moving mechanism 2 works to drive the position of the circuit board to move toward the welding pin cutting mechanism 5, the telescopic ends of the two adjusting electric cylinders 54 move simultaneously to drive the positions of the two adjusting blocks 55 to move, and the positions of the two adjusting blocks 55 move to drive the grinding rollers 52 to rotate. When grinding the pins of various electronic components, the positions of the grinding rollers 52 can be adjusted according to the different lengths of the pins of the electronic components to perform grinding operations on the pins of various electronic components. The grinding motor 51 works to drive the grinding rollers 52 to rotate, and the pins of the electronic components are ground. During grinding, three dust suction fans 56 are used to absorb the dust generated by grinding.

[0051] In the sixth step, when the electronic components are welded, the suction fan 62 operates to recycle the waste gas generated by welding to prevent the waste water from floating upward onto the circuit board and affecting the welding of the circuit board.

[0052] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An automatic welding device for emergency light circuit board, characterized in that: The invention comprises a wave soldering pool (1), a welding lifting and moving mechanism (2), a welding circuit board fixing mechanism (3), an electrical component fixing mechanism (4) and a welding pin cutting mechanism (5); the wave soldering pool (1) is arranged horizontally, the welding lifting and moving mechanism (2) is located above the wave soldering pool (1), and the welding lifting and moving mechanism (2) can drive the circuit board to move horizontally along the wave soldering pool (1); the welding circuit board fixing mechanism (3) is arranged on the lifting end of the welding lifting and moving mechanism (2), the electrical component fixing mechanism (4) is also located on the lifting end of the welding lifting and moving mechanism (2), the electrical component fixing mechanism (4) is located above the welding circuit board fixing mechanism (3), and the welding pin cutting mechanism (5) is located beside the wave soldering pool (1).

2. The automatic welding device for emergency light circuit board according to claim 1 is characterized in that: The welding lifting and moving mechanism (2) comprises a lifting frame (21), two horizontal movable slides (22) and two lifting seats (23), wherein the two horizontal movable slides (22) are symmetrically arranged on both sides of the wave soldering pool (1), and the two lifting seats (23) are respectively vertically arranged on the moving ends of the two horizontal movable slides (22), each of the lifting seats (23) is provided with a lifting sprocket (25) symmetrically arranged up and down, and the two lifting sprockets (25) are sleeved with chains (26), and a lifting motor (24) drivingly connected to the lifting sprocket (25) is provided on the side wall of the lifting seat (23), and the two ends of the lifting frame (21) are respectively connected to the two chains (26), and the two ends of the lifting frame (21) are respectively slidably matched with the two lifting seats (23).

3. The automatic welding device for emergency light circuit board according to claim 2 is characterized in that: The welding circuit board fixing mechanism (3) comprises a fixing frame (31) and two fixing parts. The fixing frame (31) is horizontally arranged at the bottom of the lifting frame (21). Four bearing plates (32) are arranged on the fixing frame (31). The two fixing parts are horizontally arranged on the fixing frame (31) at a diagonal angle. Each of the fixing parts comprises a fixed electric cylinder (33), a limiting clamp (34) and a protective cover (35). The fixed electric cylinder (33) is horizontally arranged on the side wall of the fixing frame (31). The limiting clamp (34) is slidably connected to the fixing frame (31) and the limiting clamp (34) is connected to the telescopic end of the fixed electric cylinder (33). The limiting clamp (34) is provided with a limiting groove. The protective cover (35) is horizontally covered on the fixed electric cylinder (33).

4. The automatic welding device for emergency light circuit board according to claim 2 is characterized in that: The electrical component fixing mechanism (4) comprises a moving electric cylinder (41), a moving plate (42), two moving rods (43) and a plurality of retractable stoppers (44); the moving electric cylinder (41) is vertically arranged on the top of the lifting frame (21); the moving plate (42) is horizontally arranged on the retractable end of the moving electric cylinder (41); the two moving rods (43) are symmetrically arranged on the top of the moving plate (42) and the moving rods (43) are slidably matched with the lifting frame (21); and the plurality of stoppers (44) are equidistantly arranged on the bottom of the moving plate (42).

5. The automatic welding device for emergency light circuit board according to claim 4 is characterized in that: A plurality of the limiting members (44) are arranged at equal intervals at the bottom of the movable plate (42), and each adjacent limiting member (44) is slidably matched with each other up and down. Each limiting member (44) comprises a limiting spring (45) and a limiting block (46). The top of the limiting spring (45) is connected to the bottom of the movable plate (42), and the limiting block (46) is connected to the limiting spring (45). Two sliding blocks (47) are respectively arranged on two adjacent side walls of the limiting block (46), and sliding grooves (48) are respectively arranged on the other two adjacent side walls of the limiting block (46). The two sliding blocks (47) on the adjacent limiting members (44) slide in the sliding grooves (48), and a protective pad is provided at the bottom of the limiting block (46).

6. The automatic welding device for emergency light circuit board according to claim 1, characterized in that: The welding pin cutting mechanism (5) comprises a grinding motor (51), a grinding roller (52), two support seats (53), two adjusting electric cylinders (54) and two adjusting blocks (55). The two support seats (53) are symmetrically arranged. The two adjusting electric cylinders (54) are respectively vertically arranged on the support seats (53). The two adjusting blocks (55) are respectively slidably connected to the support seats (53). The bottoms of the two adjusting blocks (55) are respectively connected to the telescopic ends of the two adjusting electric cylinders (54). Three dust suction fans (56) are arranged at equal intervals between the two support seats (53). The grinding motor (51) is located on the adjusting block (55) and the main shaft of the grinding motor (51) is drivingly connected to the grinding roller (52).

7. The automatic welding device for emergency light circuit board according to claim 1 is characterized in that: A mounting frame (61) is provided on the wave soldering pool (1), and a suction fan (62) is provided on the mounting frame (61).

8. An automatic welding device for emergency light circuit board and its process according to any one of claims 1 to 7, characterized in that: The welding process comprises the following steps: In the first step, the circuit board with all the electronic components connected is horizontally placed on four bearing plates (32) on the fixed frame (31), and the position of the limiting clamp (34) is moved by the fixed electric cylinder (33), and the limiting groove on the limiting clamp (34) is moved to the circuit board to fix and limit the horizontally placed circuit board; In the second step, when fixing electronic components of different heights, the movable electric cylinder (41) drives the movable plate (42) to move downward, thereby driving the positions of the plurality of limit members (44) to move downward, so that the protective pad at the bottom of the limit block (46) contacts the various electronic components. Since a limit spring (45) is provided on the top of the limit block (46), when limiting electronic components of different heights, the limit spring (45) at different positions can be extended and retracted to drive the limit block (46) to move, thereby limiting the electronic components plugged into the circuit board, thereby preventing the plugged electronic components from tilting and affecting the welding effect when the circuit board moves downward to the wave soldering pool (1); In the third step, when the electronic components are moved downward into the wave soldering pool (1), the lifting motor (24) drives the lifting sprocket (25) to rotate, thereby driving the position of the chain (26) to rotate, thereby driving the position of the lifting frame (21) to move up and down in the vertical direction, and horizontally moving the circuit board on the fixed frame (31) into the wave soldering pool (1), performing soldering operations on the electronic components, and soldering various electronic components on the circuit board; Step 4: After the electronic components are welded, the welding lifting and moving mechanism (2) is used to move the components upwards and out of the wave soldering pool (1), and then two horizontal moving slides (22) are used to drive the circuit board to move outwards. In the fifth step, when the welding lifting and moving mechanism (2) works to drive the position of the circuit board to move toward the welding pin cutting mechanism (5), the telescopic ends of the two adjusting electric cylinders (54) move simultaneously, thereby driving the positions of the two adjusting blocks (55) to move, and the positions of the two adjusting blocks (55) move, thereby driving the grinding roller (52) to rotate. When grinding the pins of various electronic components, the position of the grinding roller (52) can be adjusted according to the different lengths of the pins of the electronic components to perform grinding operations on the pins of various electronic components. The grinding motor (51) works to drive the grinding roller (52) to rotate, and the pins of the electronic components are ground. During grinding, three dust suction fans (56) are used to absorb the dust generated by grinding. In the sixth step, when the electronic components are welded, the suction fan (62) operates to recover the waste gas generated by welding, thereby preventing waste water from floating upward onto the circuit board and affecting the welding of the circuit board.

Images