A wear-resistant PCB selective soldering jig

Abstract

The utility model discloses a kind of wear-resistant PCB board selection welding jigs, comprising: substrate, its corner is equipped with assembly slot;Wear plate, its split positioning is on assembly slot;Bump, its positioning is at the bottom of wear plate, it is engaged with chain for jig conveying;Guide strip, it is set to the side of wear plate, it is abutted with the side of chain.The utility model's selection welding jig can greatly slow down the wear rate of corner after jig use, improve its service life, so that the conveying of chain to jig is more stable.Through bump and chain engagement butt joint, guide strip and chain side abut, to replace the synchronous driving conveying mode of traditional jig by the friction force of bottom and chain with multi-surface friction fit structure direct pushing composite driving mode, to further reduce jig wear, wear plate can be disassembled, replace, to reduce jig use cost, ensure the stability of its conveying.

Description

Technical Field

[0001] This utility model relates to the field of welding fixture technology, specifically a wear-resistant PCB board selective welding fixture. Background Technology

[0002] During the use of the jig, its edges are prone to wear due to friction from the track edge and the conveyor chain, affecting the jig's lifespan. Under normal circumstances, the edge wear of a jig becomes severe after 6 months of use, making it unable to perform stable movement and use, and thus requiring scrapping, which increases the jig's operating costs. Utility Model Content

[0003] The purpose of this utility model is to provide a wear-resistant PCB board selective soldering fixture to solve the problem that the edges of existing fixtures are easily worn due to friction from the track edge and the conveying chain, which affects the life of the fixture and the stability of the moving conveyor.

[0004] To achieve the above objectives, this utility model adopts the following technical solution: a wear-resistant PCB board selective soldering fixture, comprising:

[0005] The substrate has mounting grooves at its corners;

[0006] Wear-resistant plates are assembled and positioned on the assembly slot;

[0007] A protrusion, positioned on the bottom surface of the wear-resistant plate, engages with a jig conveying chain;

[0008] A guide bar is disposed on the side of the wear-resistant plate and abuts against the side of the chain.

[0009] As a further description of the above technical solution:

[0010] Several of the aforementioned protrusions are spaced apart along the length of the wear-resistant plate.

[0011] As a further description of the above technical solution:

[0012] The side of the protrusion is provided with a first wedge-shaped surface, and the side of the end of the guide bar is provided with a second wedge-shaped surface.

[0013] As a further description of the above technical solution:

[0014] The wear-resistant plate is an L-shaped steel plate, and wear-resistant pads are provided on its side and on the side of the guide bar facing the chain.

[0015] As a further description of the above technical solution:

[0016] The first pin and the second pin are respectively inserted into the positioning holes of the wear-resistant plate and the positioning grooves of the substrate along the vertical and horizontal directions.

[0017] As a further description of the above technical solution:

[0018] The positioning grooves corresponding to the first pin and the second pin are connected and form a cross shape.

[0019] As a further description of the above technical solution:

[0020] The second pin is inserted into the through hole of the first pin.

[0021] As a further description of the above technical solution:

[0022] The caps at the outer ends of the first and second pins are embedded in the countersunk holes on the outer surface of the wear-resistant plate.

[0023] In summary, by adopting the above technical solution, this utility model has the following advantages over the prior art:

[0024] Beneficial effects:

[0025] This utility model's selective welding fixture, by arranging wear-resistant plates on its sides, significantly reduces the wear rate at the edges and corners after use, extending its service life and making the chain's conveying of the fixture more stable. Through the engagement of protrusions with the chain and the abutment of the guide bar with the chain's side, the traditional synchronous drive conveying method, which relies on friction between the bottom surface and the chain, is replaced by a composite drive method using a multi-faceted friction fit structure for direct pushing, further reducing fixture wear. The wear-resistant plate's detachable design with two pins to the base plate further ensures its structural quality, thereby guaranteeing the stability of the fixture's conveying, facilitating easy assembly and disassembly, and ensuring stable positioning of the wear-resistant plate. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the structure of a soldering fixture for a wear-resistant PCB board.

[0028] Figure 2 A partial cross-sectional view of a soldering fixture selected for a wear-resistant PCB board.

[0029] Legend:

[0030] 1. Substrate; 2. Assembly groove; 3. Wear-resistant plate; 4. Protrusion; 5. Guide bar; 6. First wedge surface; 7. Second wedge surface; 8. Wear-resistant pad; 9. First pin; 10. Second pin; 11. Positioning hole; 12. Positioning groove; 13. Through hole; 14. Countersunk hole. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0032] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] Please see Figure 1-2 This utility model provides a technical solution: a wear-resistant PCB board selective soldering fixture, comprising:

[0034] The substrate 1 has mounting grooves 2 at its corners;

[0035] Wear-resistant plate 3 is assembled and positioned on the assembly groove 2;

[0036] The protrusion 4 is positioned on the bottom surface of the wear-resistant plate 3 and engages with the jig conveying chain;

[0037] Guide bar 5 is disposed on the side of the wear-resistant plate 3 and abuts against the side of the chain.

[0038] Several of the protrusions 4 are spaced apart along the length of the wear-resistant plate 3 to improve the connection strength between the protrusions 4 and the chain and the transmission stability.

[0039] The working principle of this wear-resistant PCB selective soldering fixture in this embodiment includes: by arranging wear-resistant plates 3 on its sides, the wear rate at the edges of the fixture can be greatly reduced after use, thereby increasing its service life and making the chain conveying of the fixture more stable. Through the engagement and connection of the protrusions 4 with the chain, and the abutment of the guide strips 5 with the side of the chain, the traditional synchronous drive conveying method achieved by the frictional force between the bottom surface of the fixture and the chain is replaced by a composite drive method that directly pushes the fixture using a multi-faceted friction fit structure, further reducing fixture wear.

[0040] The side of the protrusion 4 is provided with a first wedge-shaped surface 6, and the side of the end of the guide bar 5 is provided with a second wedge-shaped surface 7, which improves the stability of the connection between the protrusion 4, the guide bar 5 and the chain.

[0041] The wear-resistant plate 3 is an L-shaped steel plate, and wear-resistant pads 8 are provided on its side and on the side of the guide bar 5 facing the chain to further reduce the wear of the wear-resistant plate 3.

[0042] The first pin 9 and the second pin 10 are respectively inserted into the positioning holes 11 of the wear-resistant plate 3 and the positioning grooves 12 of the substrate 1 along the vertical and horizontal directions. The positioning grooves 12 corresponding to the first pin 9 and the second pin 10 are connected and form a cross shape. The second pin 10 is inserted into the through hole 13 of the first pin 9. The caps at the outer ends of the first pin 9 and the second pin 10 are embedded in the countersunk holes 14 on the outer surface of the wear-resistant plate 3.

[0043] The assembly process of a wear-resistant PCB board selective soldering fixture in this embodiment includes: assembling the wear-resistant plate 3 on the assembly groove 2, inserting the first pin 9 vertically into the wear-resistant plate 3 and the substrate 1, and inserting the second pin 10 horizontally into the wear-resistant plate 3 and the substrate 1 and through the through hole 13 to achieve pin positioning, which is convenient to operate.

[0044] In summary, due to the adoption of the above technical solution, the wear-resistant PCB board selective soldering fixture of this embodiment has the following advantages compared with the prior art:

[0045] This utility model's selective welding fixture, by arranging wear-resistant plates on its sides, significantly reduces the wear rate at the edges and corners after use, extending its service life and making the chain's conveying of the fixture more stable. Through the engagement of protrusions with the chain and the abutment of the guide bar with the chain's side, the traditional synchronous drive conveying method, which relies on friction between the bottom surface and the chain, is replaced by a composite drive method using a multi-faceted friction fit structure for direct pushing, further reducing fixture wear. The wear-resistant plate's detachable design with two pins to the base plate further ensures its structural quality, thereby guaranteeing the stability of the fixture's conveying, facilitating easy assembly and disassembly, and ensuring stable positioning of the wear-resistant plate.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wear-resistant PCB board selective soldering fixture, characterized in that, include: The substrate has mounting grooves at its corners; Wear-resistant plates are assembled and positioned on the assembly slot; A protrusion, positioned on the bottom surface of the wear-resistant plate, engages with a jig conveying chain; A guide bar is disposed on the side of the wear-resistant plate and abuts against the side of the chain.

2. The wear-resistant PCB board selective soldering fixture according to claim 1, characterized in that, Several of the aforementioned protrusions are spaced apart along the length of the wear-resistant plate.

3. The wear-resistant PCB board selective soldering fixture according to claim 1, characterized in that, The side of the protrusion is provided with a first wedge-shaped surface, and the side of the end of the guide bar is provided with a second wedge-shaped surface.

4. The wear-resistant PCB board selective soldering fixture according to claim 1, characterized in that, The wear-resistant plate is an L-shaped steel plate, and wear-resistant pads are provided on its side and on the side of the guide bar facing the chain.

5. The wear-resistant PCB board selective soldering fixture according to claim 1, characterized in that, The first pin and the second pin are respectively inserted into the positioning holes of the wear-resistant plate and the positioning grooves of the substrate along the vertical and horizontal directions.

6. The wear-resistant PCB board selective soldering fixture according to claim 5, characterized in that, The positioning grooves corresponding to the first pin and the second pin are connected and form a cross shape.

7. A wear-resistant PCB board selective soldering fixture according to claim 6, characterized in that, The second pin is inserted into the through hole of the first pin.

8. A wear-resistant PCB board selective soldering fixture according to claim 5, characterized in that, The caps at the outer ends of the first and second pins are embedded in the countersunk holes on the outer surface of the wear-resistant plate.

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