Welding auxiliary jig

Abstract

The utility model discloses a welding auxiliary jig which comprises a bonding pad limiting seat and a rotary gland, and the bonding pad limiting seat is used for fixing a circuit board; the rotary gland is arranged above the bonding pad limiting seat; the rotary pressing cover comprises a pressing cover body and a limiting clamping jaw, the pressing cover body is hinged to the bonding pad limiting seat, the limiting clamping jaw is arranged on the pressing cover body, and a limiting through groove used for clamping a welding wire is formed in the lower portion of the limiting clamping jaw; and the gland body can rotate to drive the welding wire on the limiting clamping jaw to be tightly pressed on the bonding pad of the circuit board. The jig can limit a bonding pad and a welding wire respectively, the limiting through groove used for clamping the welding wire can face a circuit board along with rotation of the gland body, the welding wire clamped in the limiting through groove can face the bonding pad on the circuit board along with rotation of the gland body, meanwhile, under the rotation effect of the gland body, the welding wire clamped in the limiting through groove can get close to and press the bonding pad, and the welding wire can be clamped in the limiting through groove. Therefore, the purpose of improving the welding quality is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a welding auxiliary jig. Background Art

[0002] HB welding, also known as pulse thermocompression welding, is commonly used for welding circuit boards in electronic products. This technology uses a heat source to heat and melt metals, causing them to bond together when cooled to form a firm connection. It is a high-efficiency, high-precision, and high-reliability welding technology.

[0003] Due to the high requirements for welding precision in HB welding, jigs are often used to assist in positioning and welding during the welding process. The structure of the existing jig is as Figure 1 shown. There are two supporting claws 1' on the jig. The two supporting claws 1' are respectively arranged on both sides of the pad 21', and tin wire grooves 11' are opened at the tops. Through the tin wire grooves 11' on the two supporting claws 1', tin wire can be supported and fixed, so that the tin wire is close to the middle part of the pad 21' on the circuit board 2', assisting subsequent welding. However, when the tin wire is fixed by the method of supporting through the groove, there is inevitably a gap between the bottom of the tin wire groove 11' and the pad 21', which makes the tin wire suspended and unable to closely adhere to the pad 21', affecting the welding precision and resulting in a poor welding effect. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a welding auxiliary jig to improve the welding quality.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A welding auxiliary jig includes a pad limiting seat and a rotating pressing cover. The pad limiting seat is used to fix the circuit board; the rotating pressing cover is arranged above the pad limiting seat; the rotating pressing cover includes a pressing cover body and a limiting claw. The pressing cover body is hinged to the pad limiting seat, the limiting claw is arranged on the pressing cover body, and a limiting through groove for clamping and placing the welding wire is opened below the limiting claw; the pressing cover body can rotate to drive the welding wire on the limiting claw to be pressed tightly on the pad of the circuit board.

[0007] Further, the depth value H of the limiting through groove is less than the diameter d of the welding wire.

[0008] Further, the width value W of the notch of the limiting through groove is less than the diameter d of the welding wire.

[0009] Further, the cross-sectional profile of the limiting through groove is in a U shape or a circular arc shape or a dovetail shape.

[0010] Furthermore, the limiting claw includes a mounting portion and a clamping portion; the mounting portion is detachably connected to the pressure cover body; the clamping portion is fixedly arranged on the mounting portion and is located below or on the side of the pressure cover body; the limiting through groove is opened on the bottom end surface of the clamping portion.

[0011] Furthermore, there are more than two limit claws arranged at intervals, and the limit through grooves on each limit claw are coaxially arranged.

[0012] Furthermore, the limiting claw is slidably connected to the gland body, and the sliding direction of the limiting claw is consistent with the axial direction of the limiting through slot or is perpendicular to the axial direction of the limiting through slot.

[0013] Furthermore, a guide slot is provided on the pressure cover body, and a first connecting hole is provided at the bottom of the guide slot; the limiting claw is slidably arranged in the guide slot, and a second connecting hole is provided on the limiting claw; the first connecting hole and the second connecting hole are opposite to each other, and one of the holes is a strip hole, and the length direction of the strip hole is consistent with the sliding direction of the limiting claw; fasteners are passed through the first connecting hole and the second connecting hole, and the fasteners are used to lock and fix the limiting claw on the pressure cover body.

[0014] Furthermore, a hand grip is protruding from the gland body, and the hand grip is located on a side of the gland body away from the pad limiting seat.

[0015] Furthermore, a support platform and a limiting step are provided on the top of the pad limiting seat, the support platform is used to support the circuit board, a plurality of wire through grooves are opened on the top surface of the support platform, and the limiting step is used to limit the side of the circuit board and thus limit the pad.

[0016] Furthermore, the pad limiting seat includes a first seat body and a second seat body that are detachably connected, the support platform is arranged on the top of the first seat body, and the limiting step is arranged on the top of the second seat body.

[0017] Furthermore, the top end surface of the support platform is a horizontal plane, the pressure cover body is hinged to the first seat body or the second seat body along a horizontal rotation axis, and the limiting through groove is horizontally opened below the limiting claw.

[0018] The utility model has the following beneficial effects:

[0019] The utility model provides a welding auxiliary jig. The jig is provided with a pad limiting seat and a rotating pressing cover, which can limit the pad and the welding wire respectively. Among them, the limiting through groove for clamping the welding wire can face the circuit board as the pressing cover body rotates. Driven by the rotation of the pressing cover body, the welding wire clamped in the limiting through groove can face the pad on the circuit board accordingly. At the same time, under the rotation of the pressing cover body, the welding wire clamped in the limiting through groove can also approach and press the pad, closely adhering to the pad, so as to achieve the purpose of improving the welding quality. Description of the Drawings

[0020] Figure 1 It is a schematic structural diagram of the prior art.

[0021] Figure 2 It is a schematic structural diagram when the pressing cover body of the utility model is opened.

[0022] Figure 3 It is a schematic structural diagram when the pressing cover body of the utility model is closed.

[0023] Figure 4 It is a front view schematic structural diagram of the utility model.

[0024] Figure 5 It is a side view schematic structural diagram of the utility model.

[0025] Figure 6 It is Figure 5 A partial enlarged schematic diagram of the structure of part A.

[0026] Figure 7 It is a schematic structural diagram of the rotating pressing cover of the utility model.

[0027] Figure 8 It is a schematic diagram (one) of the welding wire clamping of the utility model.

[0028] Figure 9 It is a schematic diagram (two) of the welding wire clamping of the utility model.

[0029] Figure 10 It is a schematic diagram (three) of the welding wire clamping of the utility model.

[0030] Figure 11 It is a usage state diagram (one) of the utility model.

[0031] Figure 12 It is a schematic diagram of the welding wire fixation of the utility model.

[0032] Figure 13 It is a usage state diagram (two) of the utility model.

[0033] Description of main component symbols: 1. Pad limit seat; 11. First seat body; 111. Support platform; 1111. Wire through groove; 12. Second seat body; 121. Limit step; 2. Rotating gland; 21. Gland body; 211. Hand-held part; 212. Guide chute; 213. First connection hole; 22. Limit claw; 221. Mounting part; 2211. Second connection hole; 222. Clamping part; 2221. Limit through groove; 3. Circuit board; 31. Pad; 4. Welding wire; H. Depth value of the limit through groove; W. Width value of the notch of the limit through groove; d. Diameter of the welding wire. Detailed implementation mode

[0034] The following further describes the present utility model in conjunction with the drawings and the detailed implementation mode.

[0035] As Figure 2-7 shown, the present utility model discloses a welding auxiliary jig, including a pad limit seat 1 and a rotating gland 2. The top of the pad limit seat 1 is used to fix the circuit board 3. The rotating gland 2 is arranged above the pad limit seat 1. The rotating gland 2 includes a gland body 21 and a limit claw 22. The gland body 21 is hinged to the pad limit seat 1, and the limit claw 22 is arranged on the gland body 21. A limit through groove 2221 for clamping the welding wire 4 is opened below the limit claw 22, and the limit through groove 2221 is a linearly arranged through groove. The gland body 21 can rotate to drive the limit claw 22, so that the surface of the limit claw 22 with the limit through groove 2221 faces the circuit board 3 located at the top of the pad limit seat 1, so that the welding wire 4 clamped in the limit through groove 2221 faces the pad 31 on the circuit board 3, and the welding wire 4 is pressed against the pad 31, thus solving the problem that the welding wire 4 is suspended after being placed and it is difficult to be close to the pad 31. At the same time, the self-weight of the gland body 21 can keep the welding wire 4 always pressed against the pad 31 and maintain the close state of the two.

[0036] More specifically, a support platform 111 and a limit step 121 are arranged on the top of the pad limit seat 1. The support platform 111 is used to support the circuit board 3, and the limit step 121 is used to limit the side of the circuit board 3, so as to limit the pad 31. A plurality of wire through grooves 1111 are opened on the top end surface of the support platform 111, and the wire through grooves 1111 can be used to accommodate and guide the cables welded on the circuit board 3.

[0037] In this embodiment, the top end surface of the support platform 111 is a horizontal plane to horizontally support the circuit board 3. The limit through groove 2221 is horizontally opened below the limit claw 22 to horizontally clamp the welding wire 4. The gland body 21 is hinged to the first seat body 11 or the second seat body 12 along a horizontal rotation axis to drive the welding wire 4 to be horizontally pressed on the pad 31 by flipping.

[0038] The entire pad limiting seat 1 adopts a detachable combined design. The pad limiting seat 1 includes a first seat body 11 and a second seat body 12, and the first seat body 11 and the second seat body 12 are detachably connected. The above-mentioned supporting platform 111 is correspondingly arranged at the top of the first seat body 11, and the limiting step 121 is correspondingly arranged at the top of the second seat body 12. By disassembling and combining the first seat body 11 with different specifications of limiting steps 121 and the second seat body 12 with different numbers and arrangements of wire through grooves 1111, a pad limiting seat 1 adapted to different circuit boards 3 can be obtained, improving the versatility of the fixture.

[0039] Similarly, the rotary gland 2 can also adopt a detachable combined design. The limiting claw 22 mainly includes two parts, an installation part 221 and a clamping part 222. The installation part 221 is detachably connected to the gland body 21, and the clamping part 222 is fixedly arranged on the installation part 221 and is located below or on the side of the gland body 21. The limiting through groove 2221 is opened on the bottom end surface of the clamping part 222. By setting the limiting claw 22 in a detachable installation manner, it is convenient to disassemble and replace the corresponding limiting claw 22 according to the size specification of the welding wire 4, saving the cost of the fixture.

[0040] There are at least two limiting claws 22, and they are arranged at intervals. The limiting through grooves 2221 on each limiting claw 22 are coaxially arranged and are arranged along the same straight line to simultaneously clamp and place the same welding wire 4 and perform multi-point limiting on the welding wire 4. After the welding wire 4 is clamped and placed, there are no objects blocking both sides of the partial section of the welding wire 4 located between any two adjacent limiting claws 22. At this time, even if there are objects blocking at the relatively close positions on both sides of the corresponding pad 31, it does not affect the normal placement and pressing of the welding wire 4.

[0041] On this basis, the limiting claw 22 and the gland body 21 are connected in a slidable manner. The sliding direction of the limiting claw 22 can be the same as the axial direction of the limiting through groove 2221, so that the distance between the limiting claws 22 can be controlled and adjusted to clamp and place welding wires 4 of different lengths. The sliding direction of the limiting claw 22 can also be perpendicular to the axial direction of the limiting through groove 2221, and the position can be finely adjusted to ensure that the limiting through grooves 2221 on each limiting claw 22 are arranged on the same straight line.

[0042] Preferably, a guide slot 212 is provided at the top of the gland body 21, and a first connection hole 213 is provided at the bottom of the guide slot 212. The limit claw 22 is slidably provided in the guide slot 212, and a second connection hole 2211 is provided on the limit claw 22. The first connection hole 213 is opposite to the second connection hole 2211, and one of the holes is a bar hole, and the length direction of the bar hole is consistent with the sliding direction of the limit claw 22. Fasteners such as bolts and nuts (not shown) are provided inside the first connection hole 213 and the second connection hole 2211, and the limit claw 22 can be locked and fixed on the gland body 21 by the fastener. Before the fastener is installed, the position of the limit claw 22 can be slid and fine-tuned, and the limit claw 22 can also be disassembled and replaced.

[0043] To ensure the limiting effect, the cross-sectional shape and cross-sectional size of the limiting groove 2221 for clamping the welding wire 4 must match the welding wire 4 to be clamped. Figure 8-10 As shown, the cross-sectional profile of the limiting through groove 2221 may be U-shaped, arc-shaped, or dovetail-shaped.

[0044] Preferably, the depth H of the limiting groove 2221 is smaller than the diameter d of the welding wire 4. When the welding wire 4 is clamped, the welding wire 4 can partially leak out of the limiting groove 2221. When the welding wire 4 contacts the welding pad 31, a gap is left between one side of the limiting groove 2221 provided on the limiting claw 22 and the surface of the circuit board 3, and there is no direct contact, thereby ensuring that the pressure plate presses the welding wire 4 tightly.

[0045] The width W of the slot of the limiting slot 2221 is preferably smaller than the diameter d of the welding wire 4. In this case, the welding wire 4 can penetrate into the slot along the axial direction of the limiting slot 2221 from the end of the limiting slot 2221. After the welding wire 4 penetrates, it is restricted by the special shape of the limiting slot 2221 and is not easy to fall off during the rotation of the pressure cover body 21f.

[0046] In addition, a hand grip 211 is protruding from the gland body 21 , and the hand grip 211 is located at a side of the gland body 21 away from the pad limiting seat 1 , so as to facilitate operators to grasp and flip the gland body 21 .

[0047] Working principle: Figure 11 As shown, before placing the welding wire 4, the rotating cover 2 can be turned to the open state by the hand grip 211, and the circuit board 3 is clamped on the top of the welding pad limit seat 1, and the welding wire 4 is placed in the limit slot 2221. Figure 12 As shown, after the welding wire 4 is placed, the two ends of the welding wire 4 can be folded upward to prevent the welding wire 4 from moving, especially moving along the axial direction of the welding wire 4. Figure 13As shown, after the welding wire 4 is fixed, the rotating gland 2 can be driven by the hand-held part 211 to turn back to the closed state again, so that the limiting through groove 2221 faces the circuit board 3 limited on the top of the pad limiting seat 1, and the welding wire 4 placed in the limiting through groove 2221 is pressed tightly on the pad 31.

[0048] In summary, this fixture changes the existing operation method, changes the position of the limiting through groove 2221 by flipping the gland body 21, and limits the welding wire 4 by clamping and pressing the welding wire 4 through the limiting through groove 2221, so that the welding wire 4 can be closely attached to the pad 31, effectively solving the problem of the welding wire 4 being suspended. During auxiliary welding, the welding quality can be effectively improved.

[0049] Although the present invention is specifically shown and described in combination with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims, and all such changes are within the protection scope of the present invention.

Claims

1. A welding auxiliary jig, characterized in that: include: A soldering pad limit seat (1) for fixing a circuit board (3); A rotatable pressure cover (2) is arranged above the pad limiting seat (1); the rotatable pressure cover (2) comprises a pressure cover body (21) and a limiting claw (22); the pressure cover body (21) is hinged on the pad limiting seat (1); the limiting claw (22) is arranged on the pressure cover body (21); a limiting through groove (2221) for clamping and placing a welding wire (4) is provided below the limiting claw (22); the pressure cover body (21) can be rotated to drive the welding wire (4) on the limiting claw (22) to be pressed against the pad (31) of the circuit board (3).

2. A welding auxiliary jig as claimed in claim 1, characterized in that: include: The depth H of the limiting through groove (2221) is smaller than the diameter d of the welding wire (4).

3. A welding auxiliary jig as claimed in claim 1, characterized in that: include: The width W of the notch of the limiting through slot (2221) is smaller than the diameter d of the welding wire (4).

4. A welding auxiliary jig as claimed in claim 1, characterized in that: include: The cross-sectional profile of the limiting through groove (2221) is U-shaped, circular arc-shaped, or dovetail-shaped.

5. A welding auxiliary jig as claimed in claim 1, characterized in that: include: The limiting claw (22) comprises a mounting portion (221) and a clamping portion (222); the mounting portion (221) is detachably connected to the gland body (21); the clamping portion (222) is fixedly arranged on the mounting portion (221) and is located below or on the side of the gland body (21); and the limiting through groove (2221) is provided on the bottom end surface of the clamping portion (222).

6. A welding auxiliary jig as claimed in claim 1, characterized in that: include: More than two of the limiting claws (22) are arranged at intervals, and the limiting through grooves (2221) on each limiting claw (22) are coaxially arranged.

7. A welding auxiliary jig as claimed in claim 6, characterized in that: include: The limiting claw (22) is slidably connected to the gland body (21), and the sliding direction of the limiting claw (22) is consistent with the axial direction of the limiting through slot (2221) or is perpendicular to the axial direction of the limiting through slot (2221).

8. A welding auxiliary jig as claimed in claim 7, characterized in that: include: The gland body (21) is provided with a guide slot (212), and a first connection hole (213) is provided at the bottom of the guide slot (212); the limiting claw (22) is slidably arranged in the guide slot (212), and a second connection hole (2211) is provided on the limiting claw (22); the first connection hole (213) and the second connection hole (2211) are opposite to each other, and one of the holes is a strip hole, and the length direction of the strip hole is consistent with the sliding direction of the limiting claw (22); fasteners are inserted into the first connection hole (213) and the second connection hole (2211), and the fasteners are used to lock and fix the limiting claw (22) on the gland body (21).

9. A welding auxiliary jig as claimed in claim 1, characterized in that: include: A hand grip portion (211) is protrudingly provided on the gland body (21), and the hand grip portion (211) is located on a side of the gland body (21) facing away from the pad limiting seat (1).

10. A welding auxiliary jig as claimed in claim 1, characterized in that: include: A support platform (111) and a limiting step (121) are provided on the top of the pad limiting seat (1); the support platform (111) is used to support the circuit board (3); a plurality of wire through slots (1111) are provided on the top surface of the support platform (111); and the limiting step (121) is used to limit the side of the circuit board (3) and thereby limit the pad (31).

11. A welding auxiliary jig as claimed in claim 10, characterized in that: include: The pad limiting seat (1) comprises a first seat body (11) and a second seat body (12) which are detachably connected, the support platform (111) is arranged on the top of the first seat body (11), and the limiting step (121) is arranged on the top of the second seat body (12).

12. A welding auxiliary jig as claimed in claim 11, characterized in that: include: The top end surface of the support platform (111) is a horizontal plane, the gland body (21) is hinged to the first seat body (11) or the second seat body (12) along a horizontal rotation axis, and the limiting through slot (2221) is horizontally opened below the limiting claw (22).

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