A welding fixture

Abstract

A welding fixture includes a base plate, one end of which is mounted with an end cross plate, a circular hole is formed on the end cross plate, a pair of cross guide holes are formed at both ends of the end cross plate, and vertical guide holes are formed at both ends of the end cross plate. A cross moving rod is movably provided in the cross guide hole, an inner moving plate is provided at the inner end of the cross moving rod at the same end, a clamping plate is mounted on the inner moving plate, and a clamping block is mounted on the outer end of the cross moving rod at the same end. This scheme is to rotate the action disk so that the circumference acts on the inner moving plate, thereby moving the inner moving plate, and limit the two sides of the circuit board through the clamping plate through the movement of the inner moving plate, and clamp and limit the optical module through the provided clamping block, thereby improving the accuracy during welding. And because the clamping method is adopted during clamping, the positioning effect is improved, and the stability after positioning is strong.

Description

Technical Field

[0001] The utility model relates to the technical field of optical communication device processing, in particular to a welding clamp. Background Art

[0002] The optical module on the SFP optical communication device is often soldered to the circuit board. During soldering, the circuit board and the optical module need to be clamped and limited by a clamp. However, the clamping device currently used has poor clamping and positioning accuracy for the optical module. During soldering, the pins of the optical module cannot be aligned with each soldering point, which has a great impact on the soldering operation. In addition, when clamping the circuit board, the circuit board is currently limited by a limit groove set thereon, and this limiting method also has low accuracy. Utility Model Content

[0003] The utility model provides a welding fixture to solve the above-mentioned deficiencies of the prior art and solve the problem of inaccurate positioning when welding an optical module and a circuit board.

[0004] In order to achieve the purpose of this utility model, the following technologies are proposed:

[0005] A welding fixture comprises a base plate, wherein an end cross plate is installed at one end of the base plate, a circular hole is opened on the end cross plate, a pair of cross guide holes are opened at two ends of the end cross plate respectively, and vertical guide holes are opened at two ends of the end cross plate respectively, a cross moving rod is movably arranged in the cross guide holes, an inner moving plate is arranged at the inner moving plate, a clamping plate is installed on the inner moving plate, a clamping block is installed at the outer end of the cross moving rod at the same end, a vertical moving rod is movably arranged in the vertical guide hole, the vertical moving rod passes through the vertical guide hole, a downward pressing cross arm is arranged at the inner end of the vertical moving rod, and L-shaped arms are respectively installed at two ends of the downward pressing cross arm, a waist-shaped hole is opened on the horizontal section of the L-shaped arm, a downward pressing rod is movably arranged in the waist-shaped hole, a rotating shaft is respectively arranged at two ends of the end cross plate, an action disk is eccentrically arranged at the inner end of the rotating shaft, a convex portion is arranged on the outer periphery of the action disk, the downward pressing rod is arranged at the outer end of the convex portion, and the outer periphery of the action disk is tangent to the outer end of the inner moving plate. This scheme is to make the circumference of the action disk act on the inner moving plate by rotating, so that the inner moving plate moves, and the two sides of the circuit board are limited by the clamping plate through the movement of the inner moving plate, and the optical module is clamped and limited by the clamping block, so as to improve the accuracy of welding. And because the clamping method is adopted during clamping, the positioning effect is improved, and the stability after positioning is strong.

[0006] Furthermore, side plates are respectively provided on both sides of the substrate, and a pair of downward pressing protrusions are provided on the downward pressing cross arm. The downward pressing protrusions are located directly above the side plates. Through the setting of the downward pressing protrusions, they can act on the upper side of the circuit board, thereby limiting the upper and lower sides of the circuit board.

[0007] Furthermore, the inner wall of the clamping plate is provided with grooves, through which the two ends of the circuit board can be limited.

[0008] Furthermore, both sides of the groove are inclined surfaces, and the outer ends of the inclined surfaces extend outwardly in an inclined manner, and the inclined surfaces are applied to the four edges of the circuit board to improve the positioning accuracy.

[0009] Furthermore, the inner wall of the clamping block is a concave arc structure, and this structural design expands the contact area during clamping.

[0010] Furthermore, a limit block is formed at the other end of the clamping block, and the inner wall of the limit block is a concave arc structure, and the inner wall of the limit block protrudes inward from the inner wall of the clamping block. The limit block is clamped at the waist of the optical module to prevent the optical module from moving along its axial direction during welding, thereby improving the welding accuracy.

[0011] Furthermore, the inner end of the inner moving plate is in contact with a V-shaped spring sheet, which is arranged on the inner wall of the end cross plate. The V-shaped spring sheet provides an outward force for the inner moving plate when clamping, thereby balancing the force applied to the inner moving plate. In addition, when the clamping is cancelled, the inner moving plate can move outward, thereby canceling the clamping action.

[0012] The advantages of the above technical solution are:

[0013] The utility model can accurately position the circuit board and the optical module, thereby improving the welding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.

[0015] Figure 1 The three-dimensional structure of one embodiment is shown Figure 1 .

[0016] Figure 2 An enlarged view of A is shown.

[0017] Figure 3 The three-dimensional structure of one embodiment is shown Figure 2 . DETAILED DESCRIPTION

[0018] like Figure 1~Figure 3As shown, a welding fixture includes a base plate 1, an end horizontal plate 2 is installed at one end of the base plate 1, a round hole is opened on the end horizontal plate 2, a pair of horizontal guide holes are opened at both ends of the end horizontal plate 2, and vertical guide holes 20 are opened at both ends of the end horizontal plate 2. Side plates 10 are respectively provided on both sides of the base plate 1, and a pair of downward pressing protrusions 44 are provided on the downward pressing horizontal arm 31, and the downward pressing protrusions 44 are located directly above the side plates 10. A transverse movable rod 38 is movably arranged in the transverse guide hole, and an inner moving plate 37 is arranged at the inner side end of the transverse movable rod 38 at the same end, and a clamping plate 42 is installed on the inner moving plate 37, and a groove 43 is provided on the inner wall of the clamping plate 42, and both sides of the groove 43 are inclined surfaces, and the outer side ends of the inclined surfaces extend outwardly, and a clamping block 39 is installed at the outer side end of the transverse movable rod 38 at the same end, and the inner wall of the clamping block 39 is an inward concave arc structure, and a limit block 41 is formed at the other end of the clamping block 39, and the inner wall of the limit block 41 is an inward concave arc structure, and the inner wall of the limit block 41 protrudes inwardly from the inner wall of the clamping block 39. In addition, the inner side end of the inward moving plate 37 contacts a V-shaped spring piece, and the V-shaped spring piece is arranged on the inner wall of the end horizontal plate 2.

[0019] A vertical movable rod 3 is movably provided in the vertical guide hole 20, and the vertical movable rod 3 passes through the vertical guide hole 20. A downward pressure cross arm 31 is provided at the inner end of the vertical movable rod 3, and L-shaped arms 32 are respectively installed at both ends of the downward pressure cross arm 31. A waist-shaped hole 33 is opened on the horizontal section of the L-shaped arm 32, and a downward pressure rod 34 is movably provided in the waist-shaped hole 33. Rotating shafts are respectively provided at both ends of the end cross plate 2, and an action disk 35 is eccentrically provided at the inner end of the rotating shaft. A convex portion 36 is provided on the outer periphery of the action disk 35, and the downward pressure rod 34 is provided at the outer end of the convex portion 36, and the outer periphery of the action disk 35 is tangent to the outer end of the inner moving plate 37.

[0020] During operation of this embodiment, the operator inserts the pin of the optical module into the round hole.

[0021] The operator then inserts the soldering end of the circuit board between the pins while placing it on the side plate 10 .

[0022] Then, the pressing cross arm 31 is moved downward, and the waist-shaped hole 33 acts on the pressing rod 34 driven by the pressing cross arm 31, so that the action disk 35 rotates. When the action disk 35 rotates, its outer periphery acts on the inner moving plate 37, and then the optical module is clamped by the clamping block 39, and the two sides of the circuit board are positioned by the clamping plate 42. When positioning, the pressing protrusion 44 will act on the upper side of the circuit board, and then the upper and lower sides of the circuit board are positioned. After positioning, the pin welding operation is performed.

[0023] After welding is completed, the pressing cross arm 31 is pulled upwards, and the action disk 35 is driven to rotate by the pressing cross arm 31, so that the clamping block 39 and the clamping plate 42 move outwards, and the clamping is cancelled, and then the circuit board and the optical module are taken out.

[0024] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A welding fixture, characterized in that: It comprises a base plate (1), one end of the base plate (1) is mounted with an end transverse plate (2), a circular hole is formed on the end transverse plate (2), two ends of the end transverse plate (2) are respectively formed with a pair of transverse guide holes, and two ends of the end transverse plate (2) are respectively formed with vertical guide holes (20); A transverse movable rod (38) is movably provided in the transverse guide hole, an inner moving plate (37) is provided at the inner side end of the transverse movable rod (38) at the same end, a clamping plate (42) is installed on the inner moving plate (37), and a clamping block (39) is installed at the outer side end of the transverse movable rod (38) at the same end; A vertical movable rod (3) is movably provided in the vertical guide hole (20), the vertical movable rod (3) passes through the vertical guide hole (20), a downward pressing cross arm (31) is provided at the inner end of the vertical movable rod (3), L-shaped arms (32) are respectively installed at both ends of the downward pressing cross arm (31), a waist-shaped hole (33) is opened on the horizontal section of the L-shaped arm (32), a downward pressing rod (34) is movably provided in the waist-shaped hole (33), a rotating shaft is respectively provided at both ends of the end cross plate (2), an action disk (35) is eccentrically provided at the inner end of the rotating shaft, a convex portion (36) is provided on the outer periphery of the action disk (35), the downward pressing rod (34) is arranged at the outer end of the convex portion (36), and the outer periphery of the action disk (35) is tangent to the outer end of the inner moving plate (37).

2. The welding jig according to claim 1, characterized in that: Side plates (10) are respectively provided on both sides of the base plate (1), and a pair of downward pressing convex parts (44) are provided on the downward pressing cross arm (31), and the downward pressing convex parts (44) are located directly above the side plates (10).

3. The welding jig according to claim 1, characterized in that: A groove (43) is formed on the inner wall of the clamping plate (42).

4. The welding jig according to claim 1, characterized in that: Both sides of the groove (43) are inclined surfaces, and the outer ends of the inclined surfaces extend outwardly in an inclined manner.

5. The welding jig according to claim 1, characterized in that: The inner wall of the clamping block (39) is a concave arc-shaped structure.

6. The welding jig according to claim 1, characterized in that: A limiting block (41) is formed at the other end of the clamping block (39); the inner wall of the limiting block (41) is in a concave arc structure, and the inner wall of the limiting block (41) protrudes inwardly from the inner wall of the clamping block (39).

7. The welding jig according to claim 1, characterized in that: The inner end of the inner moving plate (37) contacts a V-shaped spring piece, and the V-shaped spring piece is arranged on the inner wall of the end horizontal plate (2).

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