Circuit board welding jig

Abstract

The utility model discloses a circuit board welding jig which comprises a lower pressing plate and an upper pressing plate and further comprises a base, a plurality of guide blocks and a plurality of first positioning columns. Wherein the plurality of guide blocks are fixedly connected with the base respectively and play a guiding role in the positioning process of the lower pressing plate; the first positioning columns are fixedly connected with the base. The lower pressing plate is provided with a plurality of first through holes, and the first positioning columns are in one-to-one correspondence with the first through holes and can be inserted into the corresponding first through holes. According to the utility model, the problems of production and manufacture and yield of products are solved, the service life of the welding jig is greatly prolonged, the overall positioning precision is improved, and the production cost is reduced.

Description

Technical Field

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

[0002] In the process of circuit board production, some circuit boards require multi-layer circuit board components to be stacked and welded together. These circuit boards have thin thickness (0.40~0.60mm), high device layout density, small devices, high precision, circuit board irregularities, material CTE characteristics, warping deformation, and difficult and complex processes. This urgently requires a new type of welding jig and process to solve this problem. The original jig, the positioning column is designed on the jig carrier to position and limit the stacked circuit board components, but facing the CTE coefficient of the carrier and the circuit board components with higher precision, its positioning accuracy cannot meet the production requirements. And the diameter of the jig positioning column is about 1.5mm. During the turnover process, its positioning column is prone to friction and collision, resulting in the positioning column being skewed and deformed, affecting the positioning accuracy or even unusable. This reduces the service life of the jig, increases production costs, and affects normal production and product yield. Summary of the invention

[0003] According to an embodiment of the utility model, a circuit board welding jig is provided, comprising a lower pressing plate and an upper pressing plate, and further comprising:

[0004] Base;

[0005] A plurality of guide blocks, each of which is fixedly connected to the base and plays a guiding role in the positioning process of the lower pressing plate;

[0006] A plurality of first positioning columns, wherein the plurality of first positioning columns are respectively fixedly connected to the base;

[0007] The lower pressing plate is provided with a plurality of first through holes, and the plurality of first positioning posts respectively correspond to the plurality of first through holes one by one and can be inserted into the corresponding first through holes.

[0008] Furthermore, a pair of first openings are provided at both ends of the base.

[0009] Furthermore, the base is made of bakelite.

[0010] Furthermore, a guide groove is provided on the guide block, and a chamfer is provided at the upper end of the guide groove.

[0011] Furthermore, the guide groove is a right-angle groove, and chamfered grooves are arranged at the corners of the right-angle groove.

[0012] Furthermore, the diameter of the upper end of the first positioning column is smaller than the diameter of the lower end.

[0013] Furthermore, it also comprises: at least two second positioning posts, the lower pressing plate is provided with second through holes corresponding to the second positioning posts one by one, and the second positioning posts can be inserted into the corresponding second through holes.

[0014] Furthermore, the two ends of the lower pressing plate are respectively provided with second openings, and the two ends of the upper pressing plate are respectively provided with third openings, and the second openings correspond to the third openings and are staggeredly distributed.

[0015] Furthermore, the lower pressing plate and the upper pressing plate are made of aluminum alloy.

[0016] Furthermore, a plurality of first magnet holes are arranged at the lower end of the lower pressing plate; a plurality of second magnet holes are arranged at the upper end of the upper pressing plate; the plurality of first magnet holes correspond to the plurality of second magnet holes one by one; and magnets are placed in the plurality of first magnet holes and the plurality of second magnet holes respectively.

[0017] The circuit board welding jig according to the embodiment of the utility model solves the problem of product manufacturability and yield, greatly increases the service life of the welding jig, improves the overall positioning accuracy, and reduces production costs.

[0018] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of an upper pressing plate and a lower pressing plate when they are not assembled according to an embodiment of the utility model;

[0020] Figure 2 for Figure 1 A-direction enlarged view;

[0021] Figure 3 for Figure 1 B-direction enlarged view;

[0022] Figure 4 It is a schematic diagram of installing the upper pressing plate according to an embodiment of the utility model;

[0023] Figure 5 for Figure 4 A-direction enlarged view;

[0024] Figure 6 It is a schematic perspective view of an embodiment of the utility model. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to further illustrate the present invention.

[0026] First, combine Figures 1 to 6A circuit board welding jig according to an embodiment of the utility model is described, which is used in a circuit board welding process and has a wide range of application scenarios.

[0027] like Figures 1 to 6 As shown, the circuit board welding fixture of the embodiment of the utility model comprises a lower pressing plate 4 and an upper pressing plate 5, and further comprises:

[0028] Base 1;

[0029] A plurality of guide blocks 2, each of which is fixedly connected to the base 1 and plays a guiding role in the positioning process of the lower pressing plate 4;

[0030] A plurality of first positioning columns 3 are respectively fixedly connected to the base 1 so that they are not affected by welding, which greatly increases their service life and reduces the influence of welding on their positioning accuracy;

[0031] The lower pressing plate 4 is provided with a plurality of first through holes, and the plurality of first positioning posts 3 correspond to the plurality of first through holes one by one, and can be inserted into the corresponding first through holes and protrude from the first through holes, and the protruding parts are used for positioning between the multi-layer circuit boards to be welded.

[0032] Further, if Figure 1 As shown, in this embodiment, a pair of first openings 11 are provided at both ends of the base 1 to facilitate taking out and placing the lower pressing plate 4.

[0033] Further, if Figure 1 As shown, in this embodiment, the base 1 is made of black bakelite, which has the advantages of being easy to process, high in precision, not prone to deformation, and having good wear resistance.

[0034] Further, if Figure 1~2 As shown, in this embodiment, a guide groove 21 is provided on the guide block 2, and a chamfer is provided on the upper end of the guide groove 21 to facilitate the lowering of the lower pressing plate 4.

[0035] Further, if Figure 1~2 As shown, in this embodiment, the guide groove 21 is a right-angle groove, and a chamfered groove 211 is provided at the corner of the right-angle groove to reduce the probability of scratching between the right-angle corner of the lower pressing plate 4 and the guide groove 21.

[0036] Further, if Figure 3 As shown, in this embodiment, the diameter of the upper end of the first positioning column 3 is smaller than the diameter of the lower end. The thick lower end is convenient for fixing the lower pressure plate 4 and reducing the probability of deformation of the first positioning column 3. The thin upper end is to meet actual needs.

[0037] Further, if Figure 1As shown, in this embodiment, it also includes: at least two second positioning columns 6, and the lower pressure plate 4 is provided with second through holes corresponding to the second positioning columns 6 one by one, and the second positioning columns 6 can be inserted into the corresponding second through holes; the second positioning columns 6 can further position the lower pressure plate 4 to reduce the probability of deformation of the first positioning columns 3.

[0038] Further, if Figure 4 As shown, in this embodiment, second openings 41 are respectively provided at both ends of the lower pressing plate 4, and third openings 51 are respectively provided at both ends of the upper pressing plate 5. The second openings 41 and the third openings 51 correspond to each other and are staggeredly distributed to facilitate separation of the upper pressing plate 5 from the lower pressing plate 4.

[0039] Furthermore, in this embodiment, the lower pressing plate 4 and the upper pressing plate 5 are made of aluminum alloy, which is easy to process, has high precision, is lightweight, has fast heat dissipation speed, is treated with hard anodizing process, is wear-resistant, dirt-resistant, and not easy to deform.

[0040] Further, if Figures 5 and 6 As shown, in this embodiment, a plurality of first magnet holes (not shown) are provided at the lower end of the lower pressing plate 4; a plurality of second magnet holes 52 are provided at the upper end of the upper pressing plate 5; the plurality of first magnet holes and the plurality of second magnet holes 52 correspond to each other; magnets are respectively placed in the plurality of first magnet holes and the plurality of second magnet holes 52, and the magnets are fixed in the corresponding magnet holes. The magnets in the first magnet holes cooperate with the magnets in the corresponding first magnet holes to tightly attract the upper and lower pressing plates 4, and at the same time play a guiding role in the attraction process.

[0041] Working principle:

[0042] First, put the lower pressing plate 4 into the base 1 and sleeve it on the first positioning column 3 and the second positioning column 6;

[0043] Then, the first layer of circuit board is placed in the groove of the lower pressing plate 4 and sleeved on the corresponding first positioning column 3; then the second layer of circuit board is placed on the first layer of circuit board and sleeved on the corresponding first positioning column 3;

[0044] Then, the lower pressing plate 4 is taken out and placed on the automatic conveyor of the welding machine, and the automatic conveyor conveys the lower pressing plate 4 to the inside of the welding machine for welding. That is, at this time, the upper pressing plate 5 can be used for welding without using it (of course, the upper pressing plate 5 can also be used).

[0045] When the third layer needs to be welded, repeat some of the above steps, that is, put the lower pressing plate 4 into the base 1 and sleeve it on the first positioning column 3 and the second positioning column 6;

[0046] Then, the welded semi-finished product (i.e., the first layer circuit board and the second layer circuit board have been welded into one body) is placed in the groove of the lower pressing plate 4 and sleeved on the corresponding first positioning column 3; then the third layer circuit board is placed on the second layer circuit board and sleeved on the corresponding first positioning column 3;

[0047] Then, the upper pressing plate 5 is placed on the third layer of the circuit board and cooperates with the lower pressing plate 4 to press the three layers of the circuit board (a plurality of second magnets and the first magnets at corresponding positions on the lower pressing plate 4 are attracted to each other);

[0048] Then, the lower pressing plate 4 and the upper pressing plate 5 are taken out together and placed on the automatic conveyor of the welding machine for welding.

[0049] Above, refer to Figures 1 to 6 The invention describes a circuit board welding jig according to an embodiment of the utility model, which solves the problems of product manufacturability and yield, greatly increases the service life of the welding jig, improves the overall positioning accuracy, and reduces production costs.

[0050] It should be noted that, in this specification, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0051] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.

Claims

1. A circuit board welding jig, comprising a lower pressing plate and an upper pressing plate, characterized in that: Also includes: Base; A plurality of guide blocks, each of which is fixedly connected to the base and plays a guiding role in the positioning process of the lower pressing plate; A plurality of first positioning columns, wherein the plurality of first positioning columns are respectively fixedly connected to the base; The lower pressing plate is provided with a plurality of first through holes, and the plurality of first positioning posts respectively correspond to the plurality of first through holes one by one and can be inserted into the corresponding first through holes.

2. The circuit board welding jig according to claim 1, characterized in that: A pair of first openings are arranged at two ends of the base.

3. The circuit board welding jig according to claim 1 or 2, characterized in that: The base is made of bakelite.

4. The circuit board welding jig according to claim 1, characterized in that: The guide block is provided with a guide groove, and the upper end of the guide groove is provided with a chamfer.

5. The circuit board welding jig according to claim 4, characterized in that: The guide groove is a right-angle groove, and a chamfered groove is arranged at the corner of the right-angle groove.

6. The circuit board welding jig according to claim 1, characterized in that: The diameter of the upper end of the first positioning column is smaller than the diameter of the lower end.

7. The circuit board welding jig according to claim 1, characterized in that: It also includes: at least two second positioning columns, the lower pressing plate is provided with second through holes corresponding to the second positioning columns one by one, and the second positioning columns can be inserted into the corresponding second through holes.

8. The circuit board welding jig according to claim 1, characterized in that: The lower pressing plate is provided with second openings at both ends, and the upper pressing plate is provided with third openings at both ends. The second openings correspond to the third openings and are staggeredly distributed.

9. The circuit board welding jig according to claim 1, characterized in that: The lower pressing plate and the upper pressing plate are made of aluminum alloy.

10. The circuit board welding jig according to claim 1, characterized in that: A plurality of first magnet holes are arranged at the lower end of the lower pressing plate; a plurality of second magnet holes are arranged at the upper end of the upper pressing plate; the plurality of first magnet holes correspond to the plurality of second magnet holes one by one; magnets are placed in the plurality of first magnet holes and the plurality of second magnet holes respectively.

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