Circuit board welding clamp

Abstract

The utility model relates to the technical field of circuit board processing, and discloses a circuit board welding fixture which comprises a bottom plate and two connecting plates, a transmission shaft is rotatably connected between the opposite outer surfaces of the two supporting plates, the outer surface of the transmission shaft is fixedly sleeved with a worm gear, the outer surface of the right side of an L-shaped mounting plate is rotatably connected with a worm, and the right side of the worm gear is fixedly sleeved with the worm. A motor is fixedly mounted on the outer surface of the left side of the L-shaped mounting plate, the output end of the first electric push rod is fixedly connected with a limiting block, and a plurality of limiting holes arranged in a circumferential array are formed in the outer surface of the limiting disc. A motor is matched with a worm gear and a worm to enable a transmission shaft to rotate, so that the inclination angle of the circuit board in the left-right direction is adjusted, a first electric push rod is matched with a limiting block to release limiting of a limiting disc, the circuit board is driven through a crank, the inclination angle of the circuit board in the front-back direction is adjusted, and therefore the inclination angle of the circuit board can be adjusted; and the subsequent welding work on the circuit board is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board processing, in particular to a circuit board welding fixture. Background Art

[0002] The names of circuit boards include: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board, aluminum substrate, high-frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, ultra-thin circuit board, printed (copper etching technology) circuit board, etc. Especially in the computer-related industries, a large number of circuit boards are needed for intelligent control. When welding the circuit board, a welding fixture is required to clamp and fix the circuit board.

[0003] The existing patent (publication number: CN220312295U) discloses a circuit board welding fixture, including a base. Two guiding holes are opened at the top of the base. Two symmetrically arranged moving seats are slidably connected in the guiding holes. The top of the moving seat is fixedly connected with an installation column. It can use two fixtures to clamp and fix the circuit board, and through the mutual cooperation of the clamping rod and the clamping groove, the two fixtures can drive the circuit board to turn over, avoiding repeatedly disassembling and then clamping and fixing the circuit board again, which saves time and effort and greatly improves the welding efficiency of the circuit board. At the same time, the control and adjustment component can move the moving plate and, with the cooperation of the limiting rod, make the two moving seats drive the fixtures on the installation column to approach or move away from each other, so as to be able to quickly adjust according to the size of the circuit board and improve its applicability in use.

[0004] When the above-mentioned patented technology is used, it can drive the circuit board to turn over, avoiding repeatedly disassembling and then clamping and fixing the circuit board again, which saves time and effort and greatly improves the welding efficiency of the circuit board. However, in the actual use process, it can only fix the circuit board on a plane, making the plane of the circuit board face up for welding processing, and it is unable to adjust the inclination angle of the circuit board after clamping, which is not convenient for subsequent welding work. Therefore, a circuit board welding fixture is proposed. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a circuit board welding fixture to solve the problems mentioned in the above background art.

[0006] To achieve the above object, the present utility model provides the following technical solutions: A circuit board welding fixture, including a bottom plate and two connecting plates. The top outer surface of the bottom plate is fixedly connected with two support plates arranged symmetrically front and back. A transmission shaft is rotatably connected between the opposite outer surfaces of the two support plates. A cross plate is fixedly sleeved at the center of the transmission shaft. A worm gear is fixedly sleeved on the outer surface of the transmission shaft. The left outer surface of the support plate is fixedly connected with an L-shaped mounting plate. A worm is rotatably connected to the right outer surface of the L-shaped mounting plate. A motor is fixedly installed on the left outer surface of the L-shaped mounting plate. The output end of the motor is fixedly connected with the worm. The worm is movably engaged with the outer surface of the worm gear;

[0007] The top outer surfaces of both of the two connecting plates are fixedly connected with vertical plates. A turning shaft rotatably penetrates the outer surface of the vertical plate from left to right. Limit disks are fixedly sleeved on the outer surfaces of both of the two turning shafts. Fixed plates are fixedly connected to the opposite outer surfaces of the two vertical plates. A first electric push rod is fixedly installed on the top outer surface of the fixed plate. The output end of the first electric push rod is fixedly connected with a limit block. A number of limit holes arranged in a circumferential array are formed on the outer surface of the limit disk. C-shaped fixing seats are fixedly connected to the opposite outer surfaces of the two turning shafts. Cranks are fixedly connected to the opposite outer surfaces of the two turning shafts.

[0008] Furthermore, inverted L-shaped plates are fixedly connected to the front and back outer surfaces of the bottom plate. A second forward and reverse lead screw is rotatably connected between the opposite outer surfaces of the two inverted L-shaped plates. The second forward and reverse lead screw rotatably penetrates the front inverted L-shaped plate. A second threaded plate is threadedly connected to the outer surface of the second forward and reverse lead screw. The bottom outer surface of the second threaded plate is fixedly connected with a C-shaped mounting seat. A threaded rod threadedly penetrates the bottom outer surface of the C-shaped mounting seat. The top outer surface of the threaded rod is rotatably connected with a clamping plate.

[0009] Furthermore, two cross-shaped blocks are fixedly connected to the top outer surface of the cross plate. A first forward and reverse lead screw is rotatably connected between the opposite outer surfaces of the two cross-shaped blocks. The first forward and reverse lead screw rotatably penetrates the right cross-shaped block. Two first threaded plates are threadedly connected to the outer surface of the first forward and reverse lead screw.

[0010] Furthermore, air cylinders are fixedly installed on the top outer surfaces of both of the two C-shaped fixing seats. The installation part of the air cylinder is fixedly connected with the top outer surface of the C-shaped fixing seat. The output end of the air cylinder is fixedly connected with a pressing plate.

[0011] Furthermore, second electric push rods are installed on the top outer surfaces of both of the two first threaded plates. The output ends of the two second electric push rods are respectively fixedly connected with the bottom outer surfaces of the two connecting plates.

[0012] Furthermore, side plates are fixedly connected to the outer surfaces of the two inverted L-shaped plates facing away from each other, and mounting holes are formed in the outer surfaces of the two side plates.

[0013] Furthermore, the distance between two adjacent limiting holes is 1-3 mm.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. For this circuit board welding fixture, after clamping the circuit board, the motor drives the worm to rotate, driving the worm wheel to make the transmission shaft rotate, thereby adjusting the inclination angle of the circuit board in the left-right direction. And the first electric push rod drives the limiting block to release the limit on the turning shaft, and the circuit board is driven to rotate by turning the crank, adjusting the inclination angle of the circuit board in the front-back direction, and the circuit board can be flipped, so that the inclination angle of the circuit board can be adjusted during the welding process, facilitating the subsequent welding work of the circuit board.

[0016] 2. For this circuit board welding fixture, by setting the C-shaped mounting seat, cooperating with the threaded rod and the clamping plate, the device is clamped and installed on the welding device, and the bolt can be screwed into the mounting hole of the side plate, and the device is installed on the welding device through the bolt. The installation is convenient, and the installation method can be flexibly selected according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front view structural schematic diagram of the present utility model;

[0018] Figure 2 is a bottom view structural schematic diagram of the present utility model;

[0019] Figure 3 is a structural schematic diagram of the C-shaped fixing seat and its related structures of the present utility model;

[0020] Figure 4 is the present utility model Figure 1 the enlarged structural schematic diagram at A in;

[0021] Figure 5 is the present utility model Figure 2 the enlarged structural schematic diagram at B in;

[0022] Figure 6 is the present utility model Figure 2 the enlarged structural schematic diagram at C in.

[0023] In the figure: 1, bottom plate; 2, support plate; 3, transmission shaft; 4, cross plate; 5, worm gear; 6, L-shaped mounting plate; 7, worm; 8, motor; 9, first forward and reverse lead screw; 10, first threaded plate; 11, connecting plate; 12, vertical plate; 13, turning shaft; 14, C-shaped fixing seat; 15, limiting disc; 16, limiting hole; 17, first electric push rod; 18, limiting block; 19, crank; 20, cylinder; 21, pressing plate; 22, second forward and reverse lead screw; 23, second threaded plate; 24, C-shaped mounting seat; 25, threaded rod; 26, clamping plate; 27, side plate; 28, second electric push rod. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention. Embodiment

[0025] Please refer to Figures 1-6 , the present invention provides a technical solution: a circuit board welding fixture, including a bottom plate 1 and two connecting plates 11. The top outer surface of the bottom plate 1 is fixedly connected with two support plates 2 arranged symmetrically front and back. A transmission shaft 3 is rotatably connected between the opposite outer surfaces of the two support plates 2. A cross plate 4 is fixedly sleeved at the center of the transmission shaft 3. A worm gear 5 is fixedly sleeved on the outer surface of the transmission shaft 3. The left outer surface of the support plate 2 is fixedly connected with an L-shaped mounting plate 6. A worm 7 is rotatably connected to the right outer surface of the L-shaped mounting plate 6. The left outer surface of the L-shaped mounting plate 6 is fixedly installed with a motor 8. The output end of the motor 8 is fixedly connected with the worm 7. The worm 7 is movably meshed with the outer surface of the worm gear 5. Specifically, when the motor 8 works, the motor 8 drives the worm 7 to rotate, and the worm 7 drives the worm gear 5 to rotate, so that the transmission shaft 3 rotates, thereby adjusting the angle of the cross plate 4, and further adjusting the inclination angle of the circuit board in the left and right directions.

[0026] In this embodiment, vertical plates 12 are fixedly connected to the outer surfaces of the tops of the two connecting plates 11. A turning shaft 13 is rotatably penetrated through the outer surfaces of the vertical plates 12 from left to right. Limiting disks 15 are fixedly sleeved on the outer surfaces of the two turning shafts 13. Fixed plates are fixedly connected to the outer surfaces of the two vertical plates 12 facing away from each other. A first electric push rod 17 is fixedly installed on the outer surface of the top of the fixed plate. A limiting block 18 is fixedly connected to the output end of the first electric push rod 17. A number of limiting holes 16 arranged in a circumferential array are formed in the outer surface of the limiting disk 15. C-shaped fixing seats 14 are fixedly connected to the outer surfaces of the two turning shafts 13 facing each other. Cranks 19 are fixedly connected to the outer surfaces of the two turning shafts 13 facing away from each other. Specifically, when the first electric push rod 17 retracts, the limiting block 18 disengages from the inside of the limiting hole 16, releasing the limit on the limiting disk 15. The crank 19 is rotated, and the crank 19 drives the turning shaft 13 to rotate, adjusting the inclination angle of the circuit board in the front-rear direction. When the circuit board is rotated to 180°, the flipping of the circuit board is completed. After the adjustment is completed, the first electric push rod 17 works, driving the limiting block 18 to insert into the corresponding limiting hole 16 to limit the rotation shaft.

[0027] In this embodiment, inverted L-shaped plates are fixedly connected to the outer surfaces of the front and rear sides of the bottom plate 1. A second left-right screw rod 22 is rotatably connected to the outer surfaces of the two inverted L-shaped plates facing each other. The second left-right screw rod 22 rotatably penetrates through the inverted L-shaped plate at the front side. A second threaded plate 23 is threadedly connected to the outer surface of the second left-right screw rod 22. A C-shaped mounting seat 24 is fixedly connected to the outer surface of the bottom of the second threaded plate 23. A threaded rod 25 is threadedly penetrated through the outer surface of the bottom of the C-shaped mounting seat 24. A clamping plate 26 is rotatably connected to the outer surface of the top of the threaded rod 25. Specifically, according to the actual size of the desktop of the welding device, the second left-right screw rod 22 is rotated to drive the two second threaded plates 23 to move, adjusting the positions of the two C-shaped mounting seats 24. The tops of the two C-shaped mounting seats 24 are placed on the upper end of the welding device with the lower surfaces facing downwards. The threaded rod 25 is rotated, and the threaded rod 25 drives the clamping plate 26 to move, so that one end of the clamping plate 26 fits against the lower surface of the welding device, thereby clamping and installing the device on the welding device.

[0028] In this embodiment, two horizontal blocks are fixedly connected to the outer surface of the top of the horizontal plate 4. A first left-right screw rod 9 is rotatably connected to the outer surfaces of the two horizontal blocks facing each other. The first left-right screw rod 9 rotatably penetrates through the horizontal block on the right side. Two first threaded plates 10 are threadedly connected to the outer surface of the first left-right screw rod 9. Specifically, when the first left-right screw rod 9 is rotated, the first left-right screw rod 9 drives the two first threaded plates 10 to move, adjusting the positions of the C-shaped fixing seats 14 on the left and right sides according to the size of the circuit board.

[0029] In this embodiment, cylinders 20 are fixedly installed on the outer surfaces of the tops of the two C-shaped fixing seats 14. The installation part of the cylinder 20 is fixedly connected to the outer surface of the top of the C-shaped fixing seat 14. The output end of the cylinder 20 is fixedly connected to a pressing plate 21. Specifically, when the cylinder 20 works, the cylinder 20 drives the pressing plate 21 to move downward, so that the circuit board is clamped between the pressing plate 21 and the C-shaped fixing seat 14. Silicone pads are arranged on the surfaces of the pressing plate 21 and the C-shaped fixing seat 14 to protect the circuit board.

[0030] In this embodiment, second electric push rods 28 are installed on the outer surfaces of the tops of the two first threaded plates 10. The output ends of the two second electric push rods 28 are respectively fixedly connected to the outer surfaces of the bottoms of the two connecting plates 11. Specifically, when the second electric push rod 28 works, the overall height after the circuit board is clamped is adjusted to facilitate subsequent welding work.

[0031] In this embodiment, side plates 27 are fixedly connected to the outer surfaces of the two L-shaped plates facing away from each other. Installation holes are formed in the outer surfaces of the two side plates 27. Specifically, bolts are screwed into the installation holes of the side plates 27 to install this fixture on the welding device.

[0032] In this embodiment, the distance between two adjacent limiting holes 16 is 1-3 mm. Specifically, by adopting the above technical solution, after adjusting the inclination angle of the circuit board, the first electric push rod 17 can drive the limiting block 18 to accurately insert into the interior of the limiting hole 16.

[0033] Working principle: When this utility model is in use, this fixture is installed on the welding device for welding the circuit board. When fixing the circuit board, the first forward and reverse lead screw 9 is rotated. The first forward and reverse lead screw 9 drives the first threaded plate 10 to move, and the distance between the two vertical plates 12 is adjusted. After adjusting to a suitable position, the circuit board is placed on the two C-shaped fixing seats 14. The cylinder 20 works, and the cylinder 20 drives the pressing plate 21 to press the circuit board, thereby fixing the circuit board. When the angle of the circuit board needs to be adjusted during welding, the motor 8 works, the motor 8 drives the worm 7 to rotate, the worm 7 drives the worm gear 5 to rotate, so that the transmission shaft 3 rotates, thereby adjusting the angle of the cross plate 4, and further adjusting the inclination angle of the circuit board in the left and right directions. Moreover, the first electric push rod 17 can be retracted, so that the limiting block 18 disengages from the interior of the limiting hole 16, and the limiting of the limiting disc 15 is released. The rocking handle 19 is rotated, the rocking handle 19 drives the turning shaft 13 to rotate, and the inclination angle of the circuit board in the front and back directions is adjusted. When the circuit board is rotated to 180°, the flipping of the circuit board is completed. After the adjustment is completed, the first electric push rod 17 works, driving the limiting block 18 to insert into the corresponding limiting hole 16 to limit the rotating shaft.

[0034] When installing this fixture, according to the actual size of the desktop of the welding device, rotate the second positive and negative lead screw 22 to drive the movement of the two second threaded plates 23, adjust the positions of the two C-shaped mounting seats 24, place the tops of the two C-shaped mounting seats 24 on the upper end of the welding device with the lower surface facing downwards, rotate the threaded rod 25, and the threaded rod 25 drives the movement of the clamping plate 26, so that one end of the clamping plate 26 fits against the lower surface of the welding device, thereby clamping and installing this device on the welding device. Also, if necessary, this fixture can be installed on the desktop of the welding device by screwing bolts into the mounting holes of the side plate 27, and the installation method can be flexibly selected according to needs.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit board soldering fixture, comprising a bottom plate (1) and two connecting plates (11), characterized in that: On the top outer surface of the bottom plate (1), two support plates (2) arranged symmetrically front and back are fixedly connected. Between the opposite outer surfaces of the two support plates (2), a transmission shaft (3) is rotatably connected. At the center of the transmission shaft (3), a cross plate (4) is fixedly sleeved. On the outer surface of the transmission shaft (3), a worm gear (5) is fixedly sleeved. On the left outer surface of the support plate (2), an L-shaped mounting plate (6) is fixedly connected. On the right outer surface of the L-shaped mounting plate (6), a worm (7) is rotatably connected. On the left outer surface of the L-shaped mounting plate (6), a motor (8) is fixedly installed. The output end of the motor (8) is fixedly connected to the worm (7). The worm (7) is movably meshed with the outer surface of the worm gear (5). On the top outer surfaces of the two connecting plates (11), vertical plates (12) are fixedly connected. A turning shaft (13) rotatably penetrates the outer surface of the vertical plate (12) from left to right. On the outer surfaces of the two turning shafts (13), limiting discs (15) are fixedly sleeved. On the opposite outer surfaces of the two vertical plates (12), fixed plates are fixedly connected. On the top outer surface of the fixed plate, a first electric push rod (17) is fixedly installed. The output end of the first electric push rod (17) is fixedly connected to a limiting block (18). On the outer surface of the limiting disc (15), a number of limiting holes (16) arranged in a circular array are formed. On the opposite outer surfaces of the two turning shafts (13), C-shaped fixing seats (14) are fixedly connected. On the opposite outer surfaces of the two turning shafts (13), hand cranks (19) are fixedly connected.

2. The circuit board soldering fixture according to claim 1, wherein: On the front and back outer surfaces of the bottom plate (1), inverted L-shaped plates are fixedly connected. Between the opposite outer surfaces of the two inverted L-shaped plates, a second left and right lead screw (22) is rotatably connected. The second left and right lead screw (22) rotatably penetrates the front inverted L-shaped plate. On the outer surface of the second left and right lead screw (22), a second threaded plate (23) is threadedly connected. On the bottom outer surface of the second threaded plate (23), a C-shaped mounting seat (24) is fixedly connected. Threadedly penetrating the bottom outer surface of the C-shaped mounting seat (24) is a threaded rod (25). On the top outer surface of the threaded rod (25), a clamping plate (26) is rotatably connected.

3. A circuit board soldering fixture according to claim 1, characterized in that: On the top outer surface of the cross plate (4), two transverse blocks are fixedly connected. Between the opposite outer surfaces of the two transverse blocks, a first left and right lead screw (9) is rotatably connected. The first left and right lead screw (9) rotatably penetrates the right transverse block. On the outer surface of the first left and right lead screw (9), two first threaded plates (10) are threadedly connected.

4. The circuit board soldering fixture according to claim 1, wherein: On the top outer surfaces of the two C-shaped fixing seats (14), air cylinders (20) are fixedly installed. The mounting part of the air cylinder (20) is fixedly connected to the top outer surface of the C-shaped fixing seat (14). The output end of the air cylinder (20) is fixedly connected to a pressing plate (21).

5. The circuit board soldering fixture according to claim 3, characterized in that: On the top outer surfaces of the two first threaded plates (10), second electric push rods (28) are installed. The output ends of the two second electric push rods (28) are respectively fixedly connected to the bottom outer surfaces of the two connecting plates (11).

6. The circuit board soldering fixture according to claim 2, wherein: Side plates (27) are fixedly connected to the outer surfaces of the two L-shaped plates facing away from each other, and mounting holes are formed in the outer surfaces of the two side plates (27).

7. The circuit board soldering fixture according to claim 1, wherein: The distance between two adjacent limiting holes (16) is 1-3 mm.

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