Precise welding device for thyristors

Abstract

The precise welding device comprises a base, a supporting rod is fixedly installed on the base, two limiting holes are formed in the supporting rod, a circuit board fixing structure and a thyristor fixing structure are movably installed on the supporting rod, the circuit board fixing structure comprises a support, a rotating shaft is fixedly installed on the support, and the thyristor fixing structure is fixedly installed on the rotating shaft. The rotating shaft is rotationally installed on the supporting rod. Through the arrangement of the rotating rod, the fixing clamp and other structures, the rotating rod is used for moving the fixing clamp to the position above an inserted thyristor when the thyristor is welded, the fixing clamp is used for fixing the position of the thyristor, the rotating rod can be used for adjusting the angle of the fixing clamp, the angle of the thyristor can be conveniently adjusted according to the angle of a pin of the thyristor, and the operation is convenient. According to the utility model, the device can be used for fixing the thyristors with different sizes, so that the problem that the product quality is influenced due to inclination of the thyristors when the thyristors are welded is avoided, the product percent of pass is improved, and the welding is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of thyristor welding, in particular to a precision welding device for thyristors. Background Art

[0002] Thyristor, also known as silicon controlled rectifier, is a high-power electronic component. It has the advantages of small size, high efficiency and long life. It is often used as a high-power driver in automatic control systems to control high-power devices with low-power controls.

[0003] Thyristors are usually soldered on circuit boards for use. When precision soldering is required, manual soldering is usually used. When soldering, the thyristor pins are first inserted into the circuit board, and then a solder gun is used on the back to solder the pins to the circuit board.

[0004] In the prior art, during the welding process of the thyristor and the circuit board, it is usually necessary to hold the thyristor and align it with the circuit board for welding. However, considering the coordination and matching with other electronic components, the pin angles of different thyristors are different, so the placement angle of the thyristor during welding needs to be adjusted according to the pin angle. When holding the operation, it is easy to cause the welding position of the thyristor to shift. Therefore, a precision welding device for thyristors is needed to meet people's needs. Utility Model Content

[0005] The purpose of the utility model is to provide a precision welding device for thyristors to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solutions: a precision welding device for thyristors, comprising a base, a support rod fixedly mounted on the base, two limit holes are provided on the support rod, and a circuit board fixing structure and a thyristor fixing structure are movably mounted on the support rod;

[0007] The circuit board fixing structure comprises a bracket, a rotating shaft is fixedly mounted on the bracket, the rotating shaft is rotatably mounted on the support rod, a plurality of columns are movably mounted on the bracket, a positioning plate is fixedly mounted on one end of the columns on the same side, and a pull rod is fixedly mounted on the other end of the columns on the same side;

[0008] The thyristor fixing structure includes a rotating rod, which is rotatably mounted on the bracket, a main slider is threadedly mounted on the rotating rod, a limiting rod is movably mounted on the main slider, a secondary slider is threadedly mounted on one end of the limiting rod, a sliding rod is slidably mounted on the secondary slider, the sliding rod is fixedly mounted on the bracket, a fixing clamp is slidably mounted on the limiting rod, a rubber friction pad is provided between the fixing clamp and the inner wall, and the rubber friction pad is in contact with the limiting rod.

[0009] Preferably, two fixing plates are fixedly mounted on the rotating shaft, a same fixing rod is movably mounted on the two fixing plates, one end of the fixing rod is movably mounted in a corresponding limiting hole, and a retaining ring is fixedly mounted on the fixing rod.

[0010] Preferably, a limit spring is movably sleeved on the fixing rod, one end of the limit spring is fixedly mounted on the retaining ring, and the other end is fixedly mounted on the fixing plate, and a pull block is fixedly mounted on one end of the fixing rod.

[0011] Preferably, a compression spring is sleeved and installed on the column rod, one end of the compression spring is fixedly installed on the bracket, and the other end of the compression spring is fixedly installed on the positioning plate, and a groove is provided on the positioning plate.

[0012] Preferably, a sliding hole is provided on the bracket, and the column rod is slidably installed in the sliding hole.

[0013] Preferably, two extrusion rods are slidably mounted on the fixing clamp, a pressure plate is fixedly mounted on the two extrusion rods, compression springs are sleeved and mounted on the two extrusion rods, one end of the compression spring is fixedly mounted on the pressure plate, and the other end of the compression spring is fixedly mounted on the fixing clamp, and rubber splints are fixedly mounted on both the fixing clamp and the pressure plate.

[0014] Preferably, a concave block is fixedly installed on the inner wall of the fixing clamp, a sliding groove is provided on the limiting rod, the concave block is slidably installed in the sliding groove, a small thread is provided at one end of the limiting rod, the auxiliary slider is threadedly installed on the small thread, and an adjustment handle is fixedly installed on the other end of the limiting rod.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] (1) The utility model provides a rotating rod, a fixing clamp and other structures. When welding a thyristor, the rotating rod is used to move the fixing clamp to the top of the inserted thyristor, and the fixing clamp is used to fix the position of the thyristor. The rotating rod can be used to adjust the angle of the fixing clamp, which is convenient for adjusting the angle of the thyristor according to the pin angle of the thyristor so that it can better match the circuit board. It can also adapt to thyristors of different sizes and fix them, avoiding the problem of affecting product quality due to the skewness of the thyristor when welding the thyristor, improving the product qualification rate, and making welding more precise.

[0017] (2) The utility model provides a support, a pull rod, a positioning plate, a fixing rod and other structures. When welding the thyristor, it is only necessary to pull open the pull rod, place the circuit board in the middle of the positioning plate to clamp it, and then pull out the fixing rod and flip the support to expose the circuit board welding base. The device can adapt to circuit boards of different sizes and can flip the circuit board for easy welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1This is a three-dimensional structural schematic diagram of a precision welding device for thyristors proposed by the utility model;

[0019] Figure 2 for Figure 1 A magnified image of point A;

[0020] Figure 3 A schematic diagram of a circuit board fixing structure of a precision welding device for thyristors proposed in the utility model;

[0021] Figure 4 A schematic diagram of a thyristor fixing structure of a thyristor precision welding device proposed by the utility model;

[0022] Figure 5 The utility model provides a schematic diagram of the fixing clamp structure of a precision welding device for thyristors.

[0023] In the figure: 1. base; 11. support rod; 12. limit hole; 2. bracket; 21. rotating shaft; 211. fixing plate; 212. fixing rod; 213. retaining ring; 214. limit spring; 215. pull block; 22. column rod; 23. positioning plate; 24. pull rod; 25. extrusion spring; 26. groove; 27. sliding hole; 3. rotating rod; 31. main slider; 32. limit rod; 33. auxiliary slider; 34. sliding rod; 35. fixing clamp; 351. concave block; 352. extrusion rod; 353. pressure plate; 354. compression spring; 355. rubber splint; 36. slide groove; 37. small thread; 38. adjustment handle. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1: Please refer to Figure 1-5The utility model provides a technical solution: a precision welding device for thyristors, comprising a base 1, a support rod 11 is fixedly mounted on the base 1, two limit holes 12 are provided on the support rod 11, a circuit board fixing structure and a thyristor fixing structure are movably mounted on the support rod 11, the circuit board fixing structure comprises a bracket 2, a rotating shaft 21 is fixedly mounted on the bracket 2, the rotating shaft 21 is rotatably mounted on the support rod 11, a plurality of columns 22 are movably mounted on the bracket 2, a positioning plate 23 is fixedly mounted on one end of the column 22 on the same side, a pull rod 24 is fixedly mounted on the other end of the column 22 on the same side, the rotating shaft 21 enables the bracket 2 to be easily rotated, and when in use, the positioning plate 23 can be pulled open by pulling the pull rod 24 to put the circuit board therein.

[0026] Furthermore, two fixing plates 211 are fixedly installed on the rotating shaft 21, and the same fixing rod 212 is movably installed on the two fixing plates 211. One end of the fixing rod 212 is movably installed in the corresponding one in the limiting hole 12, and a retaining ring 213 is fixedly installed on the fixing rod 212. A limiting spring 214 is movably sleeved on the fixing rod 212, one end of the limiting spring 214 is fixedly installed on the retaining ring 213, and the other end is fixedly installed on the fixing plate 211. A pulling block 215 is fixedly installed on one end of the fixing rod 212. When in use, the fixing rod 212 only needs to be pulled out to flip the bracket 2, and the fixing rod 212 can be inserted into the limiting hole 12 to fix the bracket 2.

[0027] Furthermore, a squeezing spring 25 is sleeved and installed on the column 22, one end of the squeezing spring 25 is fixedly installed on the bracket 2, and the other end of the squeezing spring 25 is fixedly installed on the positioning plate 23. The positioning plate 23 is provided with a groove 26, and the bracket 2 is provided with a sliding hole 27. The column 22 is slidably installed in the sliding hole 27. The groove 26 on the positioning plate 23 and the squeezing spring 25 on the column 22 can enable the device to fix circuit boards of different sizes and prevent the circuit boards from being clamped and damaged.

[0028] The working principle is as follows: when the thyristor needs to be welded, the pull rod 24 is pulled outward by hand, and the pull rod 24 drives the column rod 22 to move outward from the bracket 2, and compresses the squeezing spring 25, and the circuit board is placed flat in the groove 26. The pull rod 24 is released, and the squeezing spring 25 is released, and the circuit board is fixed in the groove 26. Then, the thyristor pins to be welded are inserted into the holes of the circuit board from top to bottom, and then the turning handle 310 is turned to rotate the turning rod 3, and the turning rod 3 moves with the main slider 31 movably installed thereon, and at the same time, the main slider 31 The limiting rod 32 is moved, and the other end of the limiting rod 32 moves on the slide bar 34 with the auxiliary slider 33. When the limiting rod 32 is moved to the top of the thyristor, the adjusting handle 38 is turned, and the adjusting handle 38 rotates with the limiting rod 32 on the main slider 31 and the auxiliary slider 33. The fixing clip 35 slidably installed on the limiting rod 32 is rotated downward to the thyristor fixing position and stops rotating. The fixing clip 35 is slidable and moved to the top of the thyristor. At this time, the extrusion rod 352 on the fixing clip 35 is pulled out, and the extrusion rod 35 2 moves with the pressing plate 353 fixed thereon and compresses the compression spring 354, puts the thyristor into the two rubber clamps 355, releases the extrusion rod 352, releases the compression spring 354, fixes the thyristor, and then pulls out the pull block 215, the pull block 215 moves with the fixing rod 212 in the direction away from the support rod 11, and compresses the limit spring 214, flips the bracket 2, the bracket 2 rotates downward with the rotating shaft 21, aligns the fixing rod 212 with the limit holes 12 above and below the support rod 11, and releases the pull block 215. 5. Release the limit spring 214, insert the fixing rod 212 into the limiting hole 12 below, fix the bracket 2, and then use the welder to weld the thyristor pins on the circuit board. After welding, just pull out the pull block 215, turn over the bracket 2, insert the fixing rod 212 into the limiting hole 12 above, pull out the squeezing rod 352 on the fixing clip 35, move the fixing clip 35 to one side, and twist the limiting rod 32 to one end of the rotating rod 3, then pull open the pull rod 24 to take out the welded circuit board.

[0029] Example 2: Figure 1-5 The thyristor fixing structure includes a rotating rod 3, which is rotatably mounted on the bracket 2. A main slider 31 is threadedly mounted on the rotating rod 3, and a limiting rod 32 is movably mounted on the main slider 31. A secondary slider 33 is threadedly mounted on one end of the limiting rod 32, and a sliding rod 34 is slidably mounted on the secondary slider 33. The sliding rod 34 is fixedly mounted on the bracket 2, and a fixing clamp 35 is slidably mounted on the limiting rod 32. A rubber friction pad is provided on the inner wall of the fixing clamp 35, and the rubber friction pad is in contact with the limiting rod 32. The rotating rod 3 and the limiting rod 32 enable the fixing clamp 35 to be conveniently moved to any upper part of the circuit board and to fix the position, and the position can also be adjusted to enable the fixing clamp 35 to adapt to different welding angles of the thyristor.

[0030] Furthermore, two extrusion rods 352 are slidably installed on the fixing clamp 35, and a pressure plate 353 is fixedly installed on the two extrusion rods 352. A compression spring 354 is sleeved and installed on the two extrusion rods 352. One end of the compression spring 354 is fixedly installed on the pressure plate 353, and the other end of the compression spring 354 is fixedly installed on the fixing clamp 35. Rubber clamps 355 are fixedly installed on the fixing clamp 35 and the pressure plate 353. The extrusion rods 352 and the pressure plate 353 movably installed on the fixing clamp 35 can fix the thyristor to prevent the thyristor from loosening when the pins are welded after the bracket 2 is flipped.

[0031] Furthermore, a concave block 351 is fixedly installed on the inner wall of the fixing clamp 35, a sliding groove 36 is provided on the limiting rod 32, and the concave block 351 is slidably installed in the sliding groove 36. A small thread 37 is provided at one end of the limiting rod 32, and the auxiliary slider 33 is threadedly installed on the small thread 37. An adjusting handle 38 is fixedly installed on the other end of the limiting rod 32. The sliding groove 36 allows the fixing clamp 35 to slide conveniently on the limiting rod 32, and the adjusting handle 38 can conveniently adjust the rotating rod 3. The remaining features are the same as those in Example 1.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A precision welding device for a thyristor, comprising a base (1); characterized in that: A support rod (11) is fixedly mounted on the base (1), two limit holes (12) are provided on the support rod (11), and a circuit board fixing structure and a thyristor fixing structure are movably mounted on the support rod (11); The circuit board fixing structure comprises a bracket (2), a rotating shaft (21) is fixedly mounted on the bracket (2), the rotating shaft (21) is rotatably mounted on the support rod (11), a plurality of columns (22) are movably mounted on the bracket (2), a positioning plate (23) is fixedly mounted on one end of the columns (22) located on the same side, and a pull rod (24) is fixedly mounted on the other end of the columns (22) located on the same side; The thyristor fixing structure comprises a rotating rod (3), the rotating rod (3) is rotatably mounted on the bracket (2), a main slider (31) is threadedly mounted on the rotating rod (3), a limiting rod (32) is movably mounted on the main slider (31), a secondary slider (33) is threadedly mounted on one end of the limiting rod (32), a sliding rod (34) is slidably mounted on the secondary slider (33), the sliding rod (34) is fixedly mounted on the bracket (2), a fixing clamp (35) is slidably mounted on the limiting rod (32), a rubber friction pad is provided on the inner wall of the fixing clamp (35), and the rubber friction pad is in contact with the limiting rod (32).

2. A thyristor precision welding device according to claim 1, characterized in that: Two fixing plates (211) are fixedly mounted on the rotating shaft (21), a same fixing rod (212) is movably mounted on the two fixing plates (211), one end of the fixing rod (212) is movably mounted in a corresponding limiting hole (12), and a retaining ring (213) is fixedly mounted on the fixing rod (212).

3. The precision welding device for thyristors according to claim 2, characterized in that: A limit spring (214) is movably sleeved on the fixed rod (212), one end of the limit spring (214) is fixedly mounted on the retaining ring (213), and the other end is fixedly mounted on the fixed plate (211), and a pull block (215) is fixedly mounted on one end of the fixed rod (212).

4. The precision welding device for thyristors according to claim 1, characterized in that: The column rod (22) is sleeved with a compression spring (25), one end of which is fixedly mounted on the bracket (2), and the other end of which is fixedly mounted on a positioning plate (23), wherein a groove (26) is provided on the positioning plate (23).

5. The precision welding device for thyristors according to claim 1, characterized in that: The bracket (2) is provided with a sliding hole (27), and the column rod (22) is slidably installed in the sliding hole (27).

6. The precision welding device for thyristors according to claim 1, characterized in that: Two extrusion rods (352) are slidably mounted on the fixing clamp (35), a pressure plate (353) is fixedly mounted on the two extrusion rods (352), a compression spring (354) is sleeved and mounted on the two extrusion rods (352), one end of the compression spring (354) is fixedly mounted on the pressure plate (353), and the other end of the compression spring (354) is fixedly mounted on the fixing clamp (35), and a rubber clamp (355) is fixedly mounted on both the fixing clamp (35) and the pressure plate (353).

7. The precision welding device for thyristors according to claim 1, characterized in that: A concave block (351) is fixedly mounted on the inner wall of the fixing clamp (35), a sliding groove (36) is provided on the limiting rod (32), the concave block (351) is slidably mounted in the sliding groove (36), a small thread (37) is provided on one end of the limiting rod (32), the auxiliary slider (33) is threadedly mounted on the small thread (37), and an adjustment handle (38) is fixedly mounted on the other end of the limiting rod (32).

Images