A tool for PCBA over-peak soldering

Abstract

The utility model discloses a kind of tool for PCBA over-wave peak welding, applied in PCBA production field, including fixed frame, the inner wall of the fixed frame is equipped with first sliding slot;The utility model moves first sliding block by rotating rotating head and makes first bidirectional screw rod rotate and drive fixed block to move, adjustable installation width, rotating rotating head makes pivot drive second bevel gear rotation, first bevel gear rotation makes second bidirectional screw rod rotate, second sliding block drive fixed block to move, adjustable installation length mode, can reach the purpose of different size PCBA, reduce production cost, improve practicality and applicability, the utility model is by moving clamping link and makes clamping link and clamping hole disengage, fixed rod is separated from clamping under the action of second spring and fixed hole, the mode of taking down carrier plate and replacing, can reach the purpose of facilitating carrier plate replacement, reduce workload, improve the efficiency of replacement.

Description

Technical Field

[0001] This utility model relates to the field of PCBA production, and in particular to a tooling for wave soldering of PCBA. Background Technology

[0002] A search of Chinese patents revealed publication number CN212519594U, which discloses a novel wave soldering fixture. This fixture includes a universal fixture frame, a dial, a ruler, a clamp, a solder shield, a dedicated wave soldering fixture, an opening for wave soldering components, and a protective slot for surface-mount components. Traditional wave soldering fixtures cannot adjust the PCB angle, easily leading to problems such as solder bridging or poor solder penetration. By employing a universal fixture frame and a dedicated wave soldering fixture, the fixture protects the surface-mount components on the soldering surface according to product characteristics, exposing only the solder joints to be wave soldered. Furthermore, the angle dial allows the dedicated wave soldering fixture to be adjusted to any angle, solving the problems of solder bridging and low production efficiency associated with traditional wave soldering fixtures, resulting in higher soldering reliability.

[0003] Existing fixtures are not suitable for PCBAs of different sizes. Generally, the size of the fixture is fixed, resulting in a fixed carrier board size. A fixed carrier board size can only be used with PCBAs of a fixed size. If it is necessary to use different sized PCBAs, the entire fixture needs to be replaced, which increases production costs, reduces practicality and applicability, and is inconvenient for carrier board replacement. Different PCBAs require different carrier boards, and carrier boards need to be replaced for different PCBAs. Generally, carrier boards are fixed by multiple screws, and disassembly and assembly require tools, which is cumbersome, increases workload, and reduces replacement efficiency. To solve the above problems, we propose a fixture for wave soldering of PCBAs. Utility Model Content

[0004] The purpose of this invention is to provide a tooling for wave soldering of PCBAs, which has the advantages of being applicable to PCBAs of different sizes and facilitating the replacement of carrier boards.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a tooling for wave soldering of PCBA, comprising a fixed frame, a first sliding groove formed on the inner wall of the fixed frame, a first slider slidably connected to the inner wall of the first sliding groove, a first bidirectional lead screw threadedly connected to the inner wall of the first slider, and the first bidirectional lead screw rotatably sleeved with the inner wall of the fixed frame, a crossbar bolted between the first sliders, a second sliding groove formed on the surface of the crossbar, a second slider slidably connected to the inner wall of the second sliding groove, a second bidirectional lead screw threadedly connected to the inner wall of the second slider, and the second bidirectional lead screw rotatably sleeved with the inner wall of the crossbar, a first bevel gear fixedly sleeved on the surface of the second bidirectional lead screw, a second bevel gear meshing with the surface of the first bevel gear, a rotating shaft fixedly sleeved at the axis of the second bevel gear, and the rotating shaft rotatably sleeved with the inner wall of the crossbar.

[0006] By adopting the above technical solution, rotating the rotating head causes the first bidirectional lead screw to rotate, which in turn moves the first slider and thus the fixed block, thereby adjusting the installation width. Rotating the rotating head causes the rotating shaft to rotate the second bevel gear, which in turn causes the first bevel gear to rotate the second bidirectional lead screw, which in turn moves the second slider and thus the fixed block, thereby adjusting the installation length. This method can achieve the purpose of being suitable for PCBAs of different sizes, reducing production costs and improving practicality and applicability.

[0007] The present invention is further configured such that: a fixing block is bolted to the surface of the second slider; a carrier plate is slidably sleeved on the inner wall of the fixing block; a fixing rod is slidably sleeved on the inner wall of the fixing block; a fixing hole is opened on the surface of the carrier plate, and the fixing hole is engaged with one end of the fixing rod; a snap-fit ​​rod is slidably sleeved on the inner wall of the fixing block; a limit plate is bolted to the surface of the snap-fit ​​rod; a first spring is fixedly connected between the limit plate and the inner wall of the fixing block by a spring fixing member; and a snap-fit ​​hole is opened on the surface of the fixing rod, and the snap-fit ​​rod is engaged with the snap-fit ​​hole.

[0008] By adopting the above technical solution, the carrier plate can be removed and replaced by moving the locking rod to disengage it from the locking hole, and the fixing rod disengages from the fixing hole under the action of the second spring. This method facilitates the replacement of the carrier plate, reduces workload, and improves replacement efficiency.

[0009] The present invention is further configured such that a rotating head is bolted to one end of the first bidirectional lead screw and the top of the rotating shaft.

[0010] By adopting the above technical solution, the rotating head is set up to facilitate the adjustment of the size of the first bidirectional lead screw and the rotating shaft.

[0011] The present invention is further configured such that scale lines are printed on the surface of the fixed frame and the surface of the crossbar.

[0012] By adopting the above technical solution and setting scale lines, the size can be easily adjusted.

[0013] The present invention is further configured such that one end of the snap-fit ​​rod is wedge-shaped.

[0014] By adopting the above technical solution, one end of the snap-fit ​​rod is wedge-shaped, which facilitates the fixing of the fixing rod.

[0015] The present invention is further configured such that a pull block is bolted to the top of the snap-fit ​​rod.

[0016] By adopting the above technical solution, the locking rod can be easily moved by setting a pull block.

[0017] The present invention is further configured such that a second spring is sleeved on the surface of the fixing rod.

[0018] By adopting the above technical solution and setting a second spring, it is easy to disengage the fixing rod from the fixing hole, making disassembly convenient.

[0019] The present invention is further configured such that a mounting plate is bolted to the surface of the fixed frame.

[0020] By adopting the above technical solution and setting up an installation plate, installation and fixation are facilitated.

[0021] In summary, this utility model has the following beneficial effects: 1. This utility model uses a rotating head to rotate a first bidirectional lead screw, which in turn moves a first slider to move a fixed block, thus adjusting the installation width. Rotating the rotating head also causes a rotating shaft to rotate a second bevel gear, which in turn causes the first bevel gear to rotate a second bidirectional lead screw, which in turn moves a second slider to move a fixed block. This adjustable installation length allows the system to be used with PCBAs of different sizes, reducing production costs and improving practicality and applicability. 2. This utility model achieves the purpose of conveniently replacing the carrier plate by moving the snap-fit ​​rod to disengage it from the snap-fit ​​hole, and by disengaging the fixing rod from the fixing hole under the action of the second spring, thus making the carrier plate easier to replace, reducing workload and improving replacement efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural view of the present invention; Figure 2 This is a top sectional view of the structure of this utility model; Figure 3 This is a partial structural cross-sectional view of the present invention; Figure 4 This is a partial structural cross-sectional view of the present invention; Figure 5 This is a utility model Figure 4Enlarged view of the structure at point A in the middle.

[0023] Reference numerals in the attached drawings: 1. Fixed frame; 2. First slide groove; 3. First slider; 4. First double-acting lead screw; 5. Crossbar; 6. Second slide groove; 7. Second slider; 8. Second double-acting lead screw; 9. First bevel gear; 10. Second bevel gear; 11. Rotating shaft; 12. Fixed block; 13. Carrier plate; 14. Fixed rod; 15. Fixed hole; 16. Snap-fit ​​rod; 17. Limiting plate; 18. First spring; 19. Snap-fit ​​hole; 20. Rotating head; 21. Scale line; 22. Pull block; 23. Second spring; 24. Mounting plate. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the accompanying drawings.

[0025] Example 1: refer to Figure 1 , Figure 2 and Figure 3 A fixture for wave soldering of PCBAs includes a fixed frame 1. A first groove 2 is formed on the inner wall of the fixed frame 1. A first slider 3 is slidably connected to the inner wall of the first groove 2. A first bidirectional lead screw 4 is threadedly connected to the inner wall of the first slider 3, and the first bidirectional lead screw 4 is rotatably sleeved with the inner wall of the fixed frame 1. A crossbar 5 is bolted between the first sliders 3. A second groove 6 is formed on the surface of the crossbar 5. A second slider 7 is slidably connected to the inner wall of the second groove 6. A second bidirectional lead screw 8 is threadedly connected to the inner wall of the second slider 7, and the second bidirectional lead screw 8 is rotatably sleeved with the inner wall of the crossbar 5. A first bevel gear 9 is fixedly sleeved on the surface of the second bidirectional lead screw 8. The surface of wheel 9 is meshed with a second bevel gear 10. A rotating shaft 11 is fixedly sleeved at the axis of the second bevel gear 10, and the rotating shaft 11 is rotatably sleeved with the inner wall of the crossbar 5. By rotating the rotating head 20, the first bidirectional lead screw 4 is rotated, which drives the first slider 3 to move and the fixed block 12 to move, thus adjusting the installation width. Rotating the rotating head 20 causes the rotating shaft 11 to rotate the second bevel gear 10, which in turn causes the first bevel gear 9 to rotate the second bidirectional lead screw 8, which in turn causes the second slider 7 to move and the fixed block 12 to move. This adjustable installation length allows for the application of PCBAs of different sizes, reducing production costs and improving practicality and applicability.

[0026] refer to Figure 1 , Figure 2 , Figure 3 and Figure 4 A rotating head 20 is bolted to one end of the first bidirectional lead screw 4 and the top of the rotating shaft 11. By setting the rotating head 20, the first bidirectional lead screw 4 and the rotating shaft 11 can be easily adjusted.

[0027] refer to Figure 1The surface of the fixed frame 1 and the surface of the crossbar 5 are printed with scale lines 21. By setting the scale lines 21, it is easy to adjust the size.

[0028] refer to Figure 1 and Figure 2 A mounting plate 24 is bolted to the surface of the fixed frame 1, which facilitates installation and fixation.

[0029] Example 2: refer to Figure 1 , Figure 2 , Figure 4 and Figure 5 A fixing block 12 is bolted to the surface of the second slider 7. A carrier plate 13 is slidably sleeved on the inner wall of the fixing block 12. A fixing rod 14 is slidably sleeved on the inner wall of the fixing block 12. A fixing hole 15 is opened on the surface of the carrier plate 13, and the fixing hole 15 is engaged with one end of the fixing rod 14. A snap-fit ​​rod 16 is slidably sleeved on the inner wall of the fixing block 12. A limiting plate 17 is bolted to the surface of the snap-fit ​​rod 16. A first spring 18 is fixedly connected between the limiting plate 17 and the inner wall of the fixing block 12 by a spring fixing member. A snap-fit ​​hole 19 is opened on the surface of the fixing rod 14, and the snap-fit ​​rod 16 is engaged with the snap-fit ​​hole 19. By moving the snap-fit ​​rod 16, the snap-fit ​​rod 16 is disengaged from the snap-fit ​​hole 19. Under the action of the second spring 23, the fixing rod 14 is disengaged from the fixing hole 15. The carrier plate 13 can be removed and replaced in this way, which can facilitate the replacement of the carrier plate 13, reduce the workload, and improve the replacement efficiency.

[0030] refer to Figure 5 One end of the locking rod 16 is wedge-shaped, which facilitates the fixing of the fixing rod 14.

[0031] refer to Figure 5 A pull block 22 is bolted to the top of the locking rod 16, which facilitates the movement of the locking rod 16.

[0032] refer to Figure 5 A second spring 23 is fitted on the surface of the fixing rod 14. By setting the second spring 23, it is easy to disengage the fixing rod 14 from the fixing hole 15, making it convenient to disassemble.

[0033] Brief description of the usage process: Simultaneously rotate the rotating head 20 on the first bidirectional lead screw 4 with both hands. The rotation of the rotating head 20 drives the first bidirectional lead screw 4 to rotate, which in turn causes the first slider 3 to move relative to or away from each other. The relative movement of the first slider 3 causes the crossbar 5 to move relative to or away from each other, which in turn causes the fixed blocks 12 to move relative to or away from each other, thus changing the longitudinal spacing between the fixed blocks 12. Rotating the rotating head 20 on the crossbar 5 drives the rotating shaft 11 to rotate, which in turn drives the second bevel gear 10 to rotate. The rotation of the second bevel gear 10 drives the first bevel gear 9 to rotate, which in turn drives the second bidirectional lead screw 8 to rotate, which in turn drives the second slider 7 to move relative to or away from each other. The second slider 7 moves relative to or away from the fixed block 12, causing the lateral spacing of the fixed block 12 to change, thereby achieving the purpose of adapting to different PCBAs. The pull block 22 moves, causing the snap-fit ​​rod 16 to move. The snap-fit ​​rod 16 moves, causing it to disengage from the snap-fit ​​hole 19. The fixed rod 14 disengages from the fixed hole 15 under the action of the second spring 23. The carrier plate 13 is removed, and the required carrier plate 13 is installed on the fixed block 12. The fixed rod 14 is moved, causing it to snap into the fixed hole 15. The snap-fit ​​rod 16 snaps into the snap-fit ​​hole 19 under the action of the first spring 18, fixing the fixed rod 14 and completing the replacement, thereby facilitating the replacement of the carrier plate 13.

[0034] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A tooling for wave soldering of PCBA, comprising a fixing frame (1), characterized in that, The inner wall of the fixed frame (1) is provided with a first sliding groove (2), the inner wall of the first sliding groove (2) is slidably connected with a first slider (3), the inner wall of the first slider (3) is threadedly connected with a first bidirectional screw (4), and the first bidirectional screw (4) is rotatably sleeved with the inner wall of the fixed frame (1). A crossbar (5) is bolted between the first sliders (3). The surface of the crossbar (5) is provided with a second sliding groove (6), the inner wall of the second sliding groove (6) is slidably connected with a second slider (7), the inner wall of the second slider (7) is threadedly connected with a second bidirectional screw (8), and the second bidirectional screw (8) is rotatably sleeved with the inner wall of the crossbar (5). The surface of the second bidirectional screw (8) is fixedly sleeved with a first bevel gear (9), the surface of the first bevel gear (9) is meshed with a second bevel gear (10), the shaft (11) is fixedly sleeved at the center of the second bevel gear (10), and the shaft (11) is rotatably sleeved with the inner wall of the crossbar (5).

2. The tooling for wave soldering of PCBA according to claim 1, characterized in that, A fixing block (12) is bolted to the surface of the second slider (7). A carrier plate (13) is slidably sleeved on the inner wall of the fixing block (12). A fixing rod (14) is slidably sleeved on the inner wall of the fixing block (12). A fixing hole (15) is opened on the surface of the carrier plate (13), and the fixing hole (15) is engaged with one end of the fixing rod (14). A snap-fit ​​rod (16) is slidably sleeved on the inner wall of the fixing block (12). A limit plate (17) is bolted to the surface of the snap-fit ​​rod (16). A first spring (18) is fixedly connected between the limit plate (17) and the inner wall of the fixing block (12) by a spring fixing member. A snap-fit ​​hole (19) is opened on the surface of the fixing rod (14), and the snap-fit ​​rod (16) is engaged with the snap-fit ​​hole (19).

3. The tooling for wave soldering of PCBA according to claim 1, characterized in that, A rotating head (20) is bolted to one end of the first bidirectional lead screw (4) and the top of the rotating shaft (11).

4. The tooling for wave soldering of PCBA according to claim 1, characterized in that, The surface of the fixed frame (1) and the surface of the crossbar (5) are both printed with scale lines (21).

5. A tooling for wave soldering of PCBA according to claim 2, characterized in that, One end of the snap-fit ​​rod (16) is wedge-shaped.

6. A tooling for wave soldering of PCBA according to claim 2, characterized in that, A pull block (22) is bolted to the top of the snap-fit ​​rod (16).

7. A tooling for wave soldering of PCBA according to claim 2, characterized in that, A second spring (23) is fitted onto the surface of the fixing rod (14).

8. A tooling for wave soldering of PCBA according to claim 1, characterized in that, The surface of the fixed frame (1) is bolted with a mounting plate (24).

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