Optical module welding positioning tool

Abstract

A kind of optical module welding positioning tool, including base, one end of base is equipped with connecting piece, rotatingly equipped with pressure part on connecting piece, first fixed part and a pair of second fixed part being symmetrically arranged are equipped on base, first fixed part is used for the positioning of optical module circuit board, and second fixed part is used for the positioning of flexible circuit board respectively.The positioning component first fixed part and second fixed part for the positioning of circuit board and flexible circuit board respectively provided in the utility model, and in order to expand the range of adaptation, first fixed part and second fixed part are detachably arranged on base respectively, to facilitate the welding positioning of different optical modules.Simultaneously it can also be adjusted according to actual demand respectively, so as to ensure the positioning accuracy when welding.

Description

Technical Field

[0001] This utility model relates to the field of optical module processing technology, and in particular to an optical module welding positioning fixture. Background Technology

[0002] The flexible circuit board on the optical module is soldered onto the circuit board using soldering. However, the soldering fixtures currently used have fixed components for positioning the flexible circuit board and the circuit board. Therefore, one set of soldering fixtures is only applicable to one specific optical module, resulting in a narrow range of applications. Furthermore, the fixed setting relies entirely on the machining accuracy of the fixture during use. If the machining accuracy error is large, it will affect the soldering accuracy of both components. Utility Model Content

[0003] This utility model provides a welding and positioning fixture for optical modules to overcome the shortcomings of the prior art. It solves the problems of the narrow applicability and inconvenience of adjustment of the currently used fixtures, and has strong practicality.

[0004] In order to achieve the purpose of this utility model, the following technology is proposed to be adopted: A welding and positioning fixture for optical modules includes a base, a connector at one end of the base, a pressing part rotatably provided on the connector, a first fixing part and a pair of symmetrically arranged second fixing parts on the base, the first fixing part being used for positioning the optical module circuit board, and the second fixing parts being used for positioning the flexible circuit board.

[0005] Furthermore, the base includes a rectangular base plate, one end of which is formed with an upper extension platform, the upper wall of which is formed with a guide bar, the length direction of which is parallel to the width direction of the rectangular base plate, and the upper wall of which is formed with a slide rail, the length direction of which is parallel to the length direction of the rectangular base plate.

[0006] Furthermore, the connector includes a vertical plate fixed to the upper extension platform by screws, the upper end of the vertical plate is rotatably provided with a rotating shaft, the axis of the rotating shaft is parallel to the width direction of the rectangular base plate, and the two ends of the rotating shaft are provided with limiting retaining rings through annular grooves formed on its outer periphery.

[0007] Furthermore, the pressing part includes a rotating protrusion rotatably disposed at both ends of the rotating shaft. The rotating protrusion is located inside the limiting ring. The other end of the rotating protrusion is formed with a pressure plate. A rectangular groove is provided on the pressure plate, and a rectangular hole with a size smaller than the size of the groove is provided at the bottom of the rectangular groove.

[0008] Furthermore, the inner periphery of the rectangular groove and the rectangular hole is an inclined surface, and the upper end of the inclined surface extends outward at an angle.

[0009] Furthermore, a connecting plate is fixed to the pressure plate by screws, one end of the connecting plate is bent downward to form an inclined pressure plate, and the lower end of the inclined pressure plate is bent vertically to form a pressure head.

[0010] Furthermore, the other end of the pressure plate is formed with an opening and closing protrusion.

[0011] Furthermore, the lower wall of the pressure plate is formed with multiple pairs of first protrusions, the lower ends of which abut against the upper wall of the flexible circuit board. The lower wall of the pressure plate is also formed with second protrusions, the lower ends of which abut against the upper wall of the optical module circuit board. The first and second protrusions are located on both sides of the rectangular hole.

[0012] Furthermore, the first fixing part includes a fixing block, the lower wall of the fixing block is provided with a first sliding groove, the slide rail passes through the first sliding groove, the fixing block is provided with a strip groove, the bottom of the strip groove is provided with a strip hole, a first limiting screw passes through the strip hole, the lower end of the first limiting screw is threaded to a first threaded hole opened on the rectangular base plate, and the lower end of the cap of the first limiting screw abuts against the bottom of the strip groove; The upper inner side of the fixed block is formed with a first limiting platform, a limiting groove is formed on the first limiting platform, a plurality of pads are formed at the bottom of the limiting groove, clearance grooves are formed on both sides of the limiting groove, and limiting protrusions are also formed on both sides of the limiting groove. The limiting protrusions are engaged in the positioning holes on both sides of the optical module circuit board. The upper outer side of the fixed block is formed with a second limiting platform, and a constraint groove is formed on the second limiting platform. The inner end and upper side of the constraint groove are open, and its outer end is closed. L-shaped grooves are formed on the inner ends of both sides of the constraint groove, and a positioning spacer is formed at the bottom of the constraint groove. The inner end of the optical module circuit board is constrained in the limiting groove, the outer end of the optical module circuit board is constrained in the constraint groove, and the positioning spacer is inserted into the end slot of the optical module circuit board. The inner wall of the outer end of the constraint groove abuts against the outer end of the optical module circuit board. The two ends of the second limiting platform are connected by a pair of positioning pins by threads. Multiple pairs of locking holes are opened on the outer side of the lower wall of the pressure plate, and the positioning pins are inserted into the locking holes.

[0013] Furthermore, the second fixing part includes a movable block with an oblong groove on it. An oblong hole is formed at the bottom of the oblong groove, and a second limiting screw passes through the oblong hole. The lower end of the second limiting screw is threaded to a second threaded hole formed on the rectangular base plate. The lower end of the cap of the second limiting screw abuts against the bottom of the oblong groove. A movable groove is formed on the lower wall of the movable block, and a guide bar passes through the movable groove. A positioning groove is formed on the upper wall of the movable block, and the flexible circuit board is clamped in the positioning groove. The shape and structure of the positioning groove match the shape and structure of the flexible circuit board.

[0014] The advantages of the above technical solution are: The positioning component provided by this utility model, consisting of a first fixing part and a second fixing part, is used for positioning circuit boards and flexible circuit boards, respectively. To broaden its applicability, the first and second fixing parts are detachably mounted on the base to facilitate the welding and positioning of different optical modules. Furthermore, their positions can be adjusted according to actual needs, thus ensuring positioning accuracy during welding.

[0015] This invention uses multiple protruding structural components and recessed groove structures to position flexible circuit boards and circuit boards, and ensures the stability and accuracy of the positioning after positioning, thereby ensuring welding precision. Attached Figure Description

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a further detailed description of this utility model in conjunction with the accompanying drawings.

[0017] Figure 1 A three-dimensional structure of one embodiment is shown. Figure 1 .

[0018] Figure 2 A three-dimensional structure of one embodiment is shown. Figure 2 .

[0019] Figure 3 A three-dimensional structure of one embodiment is shown. Figure 3 .

[0020] Figure 4 A three-dimensional structural diagram of the base is shown.

[0021] Figure 5 A three-dimensional structural diagram of the pressure section is shown. Detailed Implementation

[0022] like Figures 1-5 As shown, a welding and positioning fixture for an optical module includes a base 1. One end of the base 1 is provided with a connector, and a pressing part 2 is rotatably provided on the connector. The base 1 is provided with a first fixing part and a pair of second fixing parts arranged symmetrically. The first fixing part is used for positioning the optical module circuit board, and the second fixing parts are used for positioning the flexible circuit board.

[0023] The base 1 includes a rectangular base plate 10, an upper extension platform 11 formed at one end of the rectangular base plate 10, a guide bar 12 formed on the upper wall of the rectangular base plate 10, the length direction of the guide bar 12 being parallel to the width direction of the rectangular base plate 10, and a slide rail 13 formed on the upper wall of the rectangular base plate 10, the length direction of the slide rail 13 being parallel to the length direction of the rectangular base plate 10.

[0024] The connector includes a vertical plate 40 fixed to the upper extension platform 11 by screws. The upper end of the vertical plate 40 is rotatably provided with a rotating shaft 41. The axis of the rotating shaft 41 is parallel to the width direction of the rectangular base plate 10. The two ends of the rotating shaft 41 are provided with limiting rings 42 through annular grooves opened on its outer periphery.

[0025] The pressure part 2 includes rotating protrusions 20 rotatably disposed at both ends of the rotating shaft 41. The rotating protrusions 20 are located inside the limiting retaining ring 42. The other end of the rotating protrusions 20 is formed with a pressure plate 21. A rectangular groove 22 is formed on the pressure plate 21. A rectangular hole 23 with a size smaller than the groove 22 is formed at the bottom of the groove 22. The inner circumference of the rectangular groove 22 and the rectangular hole 23 are inclined surfaces, and the upper end of the inclined surface extends outward at an angle. A connecting plate 25 is fixed to the pressure plate 21 by screws. One end of the connecting plate 25 is bent downward to form an inclined pressure plate 26. The lower end of the inclined pressure plate 26 is vertically bent to form a pressure head. The other end of the pressure plate 21 is formed with an opening and closing protrusion 24. The lower wall of the pressure plate 21 is formed with multiple pairs of first pressure protrusions 27. The lower end of the first pressure protrusions 27 abuts against the upper wall of the flexible circuit board. The lower wall of the pressure plate 21 is formed with second pressure protrusions 28. The lower end of the second pressure protrusions 28 abuts against the upper wall of the optical module circuit board. The first pressure protrusions 27 and the second pressure protrusions 28 are located on both sides of the rectangular hole 23.

[0026] The first fixing part includes a fixing block 6. The lower wall of the fixing block 6 is provided with a first sliding groove. The slide rail 13 passes through the first sliding groove. The fixing block 6 is provided with a strip groove 60. The bottom of the strip groove 60 is provided with a strip hole 61. A first limiting screw passes through the strip hole 61. The lower end of the first limiting screw is threaded to a first threaded hole 14 opened on the rectangular base plate 10, and the lower end of the cap of the first limiting screw abuts against the bottom of the strip groove 60.

[0027] The upper inner side of the fixed block 6 is formed with a first limiting platform 63. A limiting groove 69 is formed on the first limiting platform 63. A plurality of pads 70 are formed at the bottom of the limiting groove 69. A clearance groove 74 is formed on both sides of the limiting groove 69. A limiting protrusion 73 is also formed on both sides of the limiting groove 69. The limiting protrusion 73 is locked in the positioning openings on both sides of the optical module circuit board.

[0028] The upper outer side of the fixed block 6 is formed with a second limiting platform 64. A constraint groove 66 is provided on the second limiting platform 64. The inner end and upper side of the constraint groove 66 are open, and its outer end is closed. L-shaped grooves 68 are provided on the inner ends of both sides of the constraint groove 66. A positioning spacer 67 is formed at the bottom of the constraint groove 66.

[0029] The inner end of the optical module circuit board is constrained in the limiting groove 69, the outer end of the optical module circuit board is constrained in the constraint groove 66, and the positioning spacer 67 is inserted into the end slot of the optical module circuit board. The inner wall of the outer end of the constraint groove 66 abuts against the outer end of the optical module circuit board.

[0030] The two ends of the second limiting platform 64 are connected by a pair of positioning pins 65 by threads. Multiple pairs of locking holes are opened on the outer side of the lower wall of the pressure plate 21, and the positioning pins 65 are inserted into the locking holes.

[0031] The second fixing part includes a movable block 5, on which a waist-shaped groove 50 is formed. A waist-shaped hole 51 is formed at the bottom of the waist-shaped groove 50. A second limiting screw is inserted into the waist-shaped hole 51. The lower end of the second limiting screw is threaded to a second threaded hole 15 formed on the rectangular base plate 10. The lower end of the cap of the second limiting screw abuts against the bottom of the waist-shaped groove 50. A movable groove is formed on the lower wall of the movable block 5. A guide bar 12 is inserted into the movable groove. A positioning groove 53 is formed on the upper wall of the movable block 5. A flexible circuit board is fitted into the positioning groove 53, and the outer shape of the positioning groove 53 matches the outer shape of the flexible circuit board.

[0032] This embodiment requires the processing of the second fixing part and the first fixing part according to the specific structure of the optical module. That is, the structure of the aforementioned components for limiting the flexible circuit board and the circuit board will change with the specific optical module structure. After processing, they are fixed to the rectangular base plate 10 by limiting screws. During fixing, a standard optical module that has been soldered is placed first, and the positions of the second fixing part and the first fixing part on the guide bar 12 and the slide rail 13 are adjusted according to the standard optical module. After adjustment, they are locked and fixed again by their respective limiting screws.

[0033] During the soldering process, the circuit board is first placed in the limiting groove 69 and the constraint groove 66, and then the flexible circuit board is placed in the positioning groove 53, with the gold fingers of the flexible circuit board overlapping the gold fingers of the circuit board. Then, the pressure plate 21 is rotated so that the lower end of the first pressure protrusion 27 abuts against the upper wall of the flexible circuit board, and the lower end of the second pressure protrusion 28 abuts against the upper wall of the optical module circuit board. The lower end of the pressure head also abuts against the upper wall of the circuit board. The inclined pressure plate 26 on the plate protects other electronic components on the circuit board from damage during soldering. The positioning method using the second pressure protrusion 28 also prevents the lower wall of the pressure plate 21 from directly impacting the circuit board and damaging the electronic components. The soldering position is located at the rectangular hole 23. After soldering, the operator performs the soldering operation, and the circuit board and flexible circuit board are removed after soldering.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A welding and positioning fixture for optical modules, characterized in that, Includes a base (1), one end of which is provided with a connector, and a pressing part (2) is rotatably provided on the connector. The base (1) is provided with a first fixing part and a pair of second fixing parts arranged symmetrically. The first fixing part is used for positioning the optical module circuit board, and the second fixing parts are used for positioning the flexible circuit board.

2. The optical module welding positioning fixture according to claim 1, characterized in that, The base (1) includes a rectangular base plate (10), one end of which is formed with an upper extension platform (11), and the upper wall of the rectangular base plate (10) is formed with a guide bar (12). The length direction of the guide bar (12) is parallel to the width direction of the rectangular base plate (10), and the upper wall of the rectangular base plate (10) is formed with a slide rail (13). The length direction of the slide rail (13) is parallel to the length direction of the rectangular base plate (10).

3. The optical module welding positioning fixture according to claim 2, characterized in that, The connector includes a vertical plate (40) fixed to the upper extension platform (11) by screws. The upper end of the vertical plate (40) is provided with a rotating shaft (41). The axis of the rotating shaft (41) is parallel to the width direction of the rectangular base plate (10). The two ends of the rotating shaft (41) are provided with limiting rings (42) through the annular grooves opened on its outer periphery.

4. The optical module welding positioning fixture according to claim 3, characterized in that, The pressure part (2) includes a rotating protrusion (20) rotatably disposed at both ends of the rotating shaft (41). The rotating protrusion (20) is located inside the limiting ring (42). The other end of the rotating protrusion (20) is formed with a pressure plate (21). A rectangular groove (22) is provided on the pressure plate (21). A rectangular hole (23) smaller than its size is provided at the bottom of the rectangular groove (22).

5. The optical module welding positioning fixture according to claim 4, characterized in that, The inner periphery of the rectangular groove (22) and the rectangular hole (23) is an inclined surface, and the upper end of the inclined surface extends outward at an angle.

6. The optical module welding positioning fixture according to claim 4, characterized in that, A connecting plate (25) is fixed to the pressure plate (21) by screws. One end of the connecting plate (25) is bent downward to form an inclined pressure plate (26), and the lower end of the inclined pressure plate (26) is bent vertically to form a pressure head.

7. The optical module welding positioning fixture according to claim 4, characterized in that, The other end of the pressure plate (21) is formed with an opening and closing protrusion (24).

8. The optical module welding positioning fixture according to claim 4, characterized in that, The lower wall of the pressure plate (21) is formed with multiple pairs of first pressure protrusions (27), the lower ends of the first pressure protrusions (27) abut against the upper wall of the flexible circuit board, and the lower wall of the pressure plate (21) is formed with second pressure protrusions (28), the lower ends of the second pressure protrusions (28) abut against the upper wall of the optical module circuit board. The first pressure protrusions (27) and the second pressure protrusions (28) are located on both sides of the rectangular hole (23).

9. The optical module welding positioning fixture according to claim 4, characterized in that, The first fixing part includes a fixing block (6), the lower wall of the fixing block (6) is provided with a first sliding groove, the slide rail (13) passes through the first sliding groove, the fixing block (6) is provided with a strip groove (60), the bottom of the strip groove (60) is provided with a strip hole (61), a first limiting screw passes through the strip hole (61), the lower end of the first limiting screw is connected to the first threaded hole (14) opened on the rectangular base plate (10) by thread, and the lower end of the cap of the first limiting screw abuts against the bottom of the strip groove (60); The upper inner side of the fixed block (6) is formed with a first limiting platform (63), a limiting groove (69) is formed on the first limiting platform (63), a plurality of pads (70) are formed at the bottom of the limiting groove (69), a relief groove (74) is formed on both sides of the limiting groove (69), and a limiting protrusion (73) is also formed on both sides of the limiting groove (69). The limiting protrusion (73) is locked in the positioning opening on both sides of the optical module circuit board. The upper outer side of the fixed block (6) is formed with a second limiting platform (64), and a constraint groove (66) is provided on the second limiting platform (64). The inner side and upper side of the constraint groove (66) are open, and its outer side is closed. L-shaped grooves (68) are provided on the inner sides of the two sides of the constraint groove (66), and a positioning spacer (67) is formed at the bottom of the constraint groove (66). The inner end of the optical module circuit board is constrained in the limiting groove (69), the outer end of the optical module circuit board is constrained in the constraint groove (66), and the positioning spacer (67) is inserted into the end slot of the optical module circuit board. The inner wall of the outer end of the constraint groove (66) abuts against the outer end of the optical module circuit board. The two ends of the second limiting platform (64) are connected by a pair of positioning pins (65) by threads. The lower outer end of the pressure plate (21) has multiple pairs of locking holes, and the positioning pins (65) are inserted into the locking holes.

10. The optical module welding positioning fixture according to claim 4, characterized in that, The second fixing part includes a movable block (5), on which a waist-shaped groove (50) is provided, and a waist-shaped hole (51) is provided at the bottom of the waist-shaped groove (50). A second limiting screw is inserted into the waist-shaped hole (51), and the lower end of the second limiting screw is threaded to a second threaded hole (15) on a rectangular base plate (10). The lower end of the cap of the second limiting screw abuts against the bottom of the waist-shaped groove (50). A movable groove is provided on the lower wall of the movable block (5), and a guide bar (12) is inserted into the movable groove. A positioning groove (53) is provided on the upper wall of the movable block (5). The flexible circuit board is clamped in the positioning groove (53), and the external structure of the positioning groove (53) matches the external structure of the flexible circuit board.

Images