PCB (printed circuit board) welding and fixing tool

Abstract

The utility model belongs to the technical field of PCB welding, and particularly relates to a PCB welding and fixing tool which comprises an upper clamping frame, a lower clamping plate and a clamping assembly. A plurality of elastic positioning pieces are arranged on the upper clamping frame, and base holes matched in position are formed in the upper clamping frame and the lower clamping plate; the clamping assembly comprises elastic buckles and fastening blocks, the elastic buckles are hinged to the two side walls of the lower clamping plate, the fastening blocks are arranged on the top of the upper clamping frame, and the elastic buckles are matched with the fastening blocks.

Description

Technical Field

[0001] The utility model belongs to the technical field of PCB board welding, and in particular relates to a PCB circuit board welding fixing tool. Background Art

[0002] With the rapid development of electronic information technology, the automation and quality control of the manufacturing process of printed circuit boards (PCBs) have become increasingly critical as they are an indispensable basic component of electronic devices. Especially in the component welding stage, ensuring the precise positioning, stable clamping and uniform heating of PCBs is crucial to improving welding efficiency, ensuring welding quality, reducing defective product rates and meeting increasingly complex circuit layout requirements.

[0003] In the traditional PCB welding process, especially when performing manual welding or multi-batch automatic welding operations, the following problems are often encountered: due to the lack of effective positioning and fixing means, the PCB circuit board is prone to shaking and position displacement due to heat or external force interference during welding, which not only hinders the accurate distribution of solder to the pad, resulting in uneven quality of solder joints and uneven heating, but may also cause welding defects such as bridging and cold solder joints, seriously affecting the electrical performance and overall reliability of the circuit board.

[0004] In addition, applying flux to the surface of the PCB circuit board before welding is an indispensable process step. However, if it is applied directly by hand, it may not only cause uneven flux coating and increase the risk of poor welding, but also the operator's hands may have static electricity. Static electricity discharge may damage sensitive electronic components or absorb dust and impurities, further affecting the welding quality and the production yield of electronic products. Utility Model Content

[0005] Based on the problems mentioned in the above background technology, the utility model provides a PCB circuit board welding and fixing tool.

[0006] The technical solution adopted by the utility model is as follows: a PCB circuit board welding fixing tool, comprising an upper clamping frame, a lower clamping plate and a clamping assembly; the upper clamping frame is provided with a plurality of elastic positioning pieces; the lower clamping plate is used to be installed on a welding table; the clamping assembly comprises an elastic buckle and a fixing block, the elastic buckle is hinged on the two side walls of the lower clamping plate, the fixing block is arranged on the top of the upper clamping frame, and the elastic buckle matches the fixing block.

[0007] Furthermore, at least one installation cavity is provided in the lower clamping plate.

[0008] Furthermore, an edge step matching the shape of the PCB is provided in the installation cavity, and an arc portion communicating with the edge step is also provided on the lower clamping plate, and the arc portion matches the positioning hole of the PCB.

[0009] Furthermore, the upper clamping frame and the lower clamping plate are both rectangular frame structures.

[0010] Furthermore, the elastic buckle is a tubular bent structure.

[0011] Furthermore, the fixing block includes a first arc-shaped block and a second arc-shaped block, and the gap between the first arc-shaped block and the second arc-shaped block matches the outer diameter of the elastic buckle tube.

[0012] Furthermore, the upper clamping frame and the lower clamping plate are both provided with a base hole with a matching position.

[0013] Furthermore, an alignment hole is provided on the upper clamping frame, and an alignment column is provided on the lower clamping plate, and the position of the alignment column matches the position of the alignment hole.

[0014] Furthermore, the upper clamping frame and the lower clamping plate are made of aluminum.

[0015] Beneficial effects of the utility model:

[0016] 1. The PCB is clamped by the upper clamping frame and the lower clamping plate. The frame-shaped structure of the upper clamping frame exposes the surface of the PCB to be welded, which is convenient for subsequent welding. The elastic positioning piece is pressed on the chip on the PCB to avoid the welding point and fix the PCB to prevent longitudinal movement during the welding process. The clamping assembly ensures the direct fixation of the upper clamping frame and the lower clamping plate to achieve stable clamping of the PCB. The tooling has a simple structure and is easy to use. It effectively solves the problem of uneven force and shaking during the welding process of the PCB. And through the clamping of the upper clamping frame and the lower clamping plate, the soldering flux can be directly applied on the surface of the PCB, which is convenient for even application without contact with human hands to avoid static electricity.

[0017] 2. Ensure that the elastic positioning piece is positioned at the corresponding position by aligning the base holes, so that the operator can directly correspond to the position of the upper clamping frame and the lower clamping plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention can be further described by the non-limiting embodiments given in the accompanying drawings;

[0019] Figure 1 It is a schematic diagram of the combination of the utility model;

[0020] Figure 2 This is an explosion diagram of the utility model;

[0021] Figure 3This is a schematic diagram of the connection between the elastic buckle and the fixing block of the utility model;

[0022] The attached drawings are marked as follows:

[0023] The upper clamping frame 1 , the first arc-shaped block 11 , the second arc-shaped block 12 , the alignment hole 13 , the elastic positioning piece 14 , the lower clamping plate 2 , the base hole 21 , the elastic buckle 22 , the installation cavity 23 , the edge step 24 , the arc-shaped portion 25 , and the alignment column 26 . DETAILED DESCRIPTION

[0024] like Figure 1-2 As shown, a PCB circuit board welding fixing tool comprises an upper clamping frame 1, a lower clamping plate 2 and a clamping assembly; the upper clamping frame 1 is provided with a plurality of elastic positioning pieces 14; the lower clamping plate is used to be installed on a welding table; the clamping assembly comprises an elastic buckle 22 and a fixing block, the elastic buckle 22 is hinged to the two side walls of the lower clamping plate 2, the fixing block is arranged on the top of the upper clamping frame 1, and the elastic buckle 22 matches the fixing block.

[0025] The above technical solution is adopted to clamp the PCB circuit board through the upper clamping frame 1 and the lower clamping plate 2. The frame-shaped structure of the upper clamping frame 1 exposes the surface of the PCB circuit board to be welded, which is convenient for subsequent welding. The elastic positioning piece 14 is pressed on the chip on the PCB board to avoid the welding point position while fixing the PCB board to prevent longitudinal movement during the welding process of the PCB board. The clamping assembly ensures the direct fixation of the upper clamping frame 1 and the lower clamping plate 2 to achieve stable clamping of the PCB board. The tooling structure is simple and easy to use, which effectively solves the problem of uneven force and shaking offset during the welding process of the PCB board. And through the clamping of the upper clamping frame 1 and the lower clamping plate 2, the soldering flux can be directly applied on the surface of the PCB board, which is convenient for even application without contact with human hands to avoid static electricity.

[0026] As a preferred solution, at least one mounting cavity 23 is provided in the lower clamping plate 2. In this embodiment, two mounting cavities 23 are provided to improve processing efficiency.

[0027] As a preferred solution, the installation cavity 23 is provided with an edge step 24 matching the shape of the PCB, and the lower clamping plate 2 is also provided with an arc portion 25 communicating with the edge step 24, and the arc portion 25 matches the positioning hole of the PCB. By matching the edge step 24 with the outer contour of the PCB, and the arc portion 25 with the positioning hole on the PCB, the PCB is accurately positioned in the tooling and stably clamped.

[0028] As a preferred solution, the upper clamping frame 1 and the lower clamping plate 2 are both rectangular frame structures. When processing, the tooling is placed on a conveyor belt and transported to an automatic welding machine to weld components on the PCB board. The outer contour structure of the rectangular frame is used to facilitate conveying and positioning without offsetting and affecting welding.

[0029] As a preferred embodiment, the elastic buckle 22 is a tubular bent structure; the fixing block includes a first arc block 11 and a second arc block 12, and the gap between the first arc block 11 and the second arc block 12 matches the tubular outer diameter of the elastic buckle 22.

[0030] Through the arrangement of the first arc block 11 and the second arc block 12, when the elastic buckle 22 moves toward the upper clamping frame 1 for clamping, the tubular structure of the elastic buckle 22 first contacts the upper arc of the first arc block 11, and the elastic buckle 22 is slightly deformed. After moving to the top of the upper arc, it moves along the lower arc of the first arc block 11 to the space between the first arc block 11 and the second arc block 12, thereby restoring the deformation and achieving stable clamping.

[0031] As a preferred solution, a matching base hole 21 is provided on the upper clamping frame 1 and the lower clamping plate 2. The alignment of the base hole 21 ensures that the elastic positioning piece 14 is positioned at the corresponding position, so that the operator can directly correspond to the position of the upper clamping frame 1 and the lower clamping plate 2.

[0032] As a preferred solution, the upper clamping frame 1 is provided with an alignment hole 13, and the lower clamping plate 2 is provided with an alignment post 26, and the alignment post 26 matches the position of the alignment hole 13. The matching arrangement of the alignment post 26 and the alignment hole 13 facilitates the neat positioning of the edges of the upper clamping frame 1 and the lower clamping plate 2, and no deviation occurs under the clamping of the clamping assembly.

[0033] As a preferred solution, the upper clamping frame 1 and the lower clamping plate 2 are made of aluminum. Aluminum has a good anti-static effect and avoids affecting the welding of the PCB board.

[0034] The design of this product enables the welding and clamping of multiple boards, improves welding efficiency, avoids static electricity generated by applying flux, and saves manpower.

[0035] The utility model is described in detail above. The description of the specific embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A PCB circuit board welding and fixing tool, characterized in that: include An upper clamping frame (1); a plurality of elastic positioning pieces (14) are arranged on the upper clamping frame (1); A lower clamping plate (2); the lower clamping plate (2) is used for being installed on a welding table; The clamping assembly comprises an elastic buckle (22) and a fixing block, wherein the elastic buckle (22) is hinged to the two side walls of the lower clamping plate (2), and the fixing block is arranged on the top of the upper clamping frame (1), and the elastic buckle (22) matches the fixing block.

2. A PCB circuit board welding and fixing tool according to claim 1, characterized in that: At least one installation cavity (23) is provided in the lower clamping plate (2).

3. A PCB circuit board welding and fixing tool according to claim 2, characterized in that: An edge step (24) matching the shape of the PCB is provided in the installation cavity (23), and an arc portion (25) communicating with the edge step (24) is also provided on the lower clamping plate (2), and the arc portion (25) matches the positioning hole of the PCB.

4. A PCB circuit board welding and fixing tool according to claim 1, characterized in that: The upper clamping frame (1) and the lower clamping plate (2) are both rectangular frame structures.

5. The PCB circuit board welding and fixing tool according to claim 1, characterized in that: The elastic buckle (22) is a tubular bent structure.

6. A PCB circuit board welding and fixing tool according to claim 5, characterized in that: The fixing block comprises a first arc-shaped block (11) and a second arc-shaped block (12), and the gap between the first arc-shaped block and the second arc-shaped block (12) matches the tubular outer diameter of the elastic buckle (22).

7. The PCB circuit board welding and fixing tool according to claim 1, characterized in that: The upper clamping frame (1) and the lower clamping plate (2) are both provided with a base hole (21) with matching positions.

8. The PCB circuit board welding and fixing tool according to claim 1, characterized in that: The upper clamping frame (1) is provided with an alignment hole (13), and the lower clamping plate (2) is provided with an alignment column (26), and the alignment column (26) matches the position of the alignment hole (13).

9. The PCB circuit board welding and fixing tool according to claim 1, characterized in that: The upper clamping frame (1) and the lower clamping plate (2) are made of aluminum.

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