Welding fixing jig

Abstract

The utility model discloses a welding fixing jig which comprises a base and an upper cover, a board placing area and a first positioning portion are arranged on the base, the upper cover is provided with a second positioning portion, the board placing area is used for placing a PCB, the first positioning portion and the second positioning portion are used for achieving positioning connection of the base and the upper cover, and the upper cover is further provided with an elastic pressing portion. The elastic pressing part is used for abutting against a welding piece on the PCB so as to provide an acting force facing the PCB for the welding piece, through the structural arrangement, during welding, the PCB can be placed in the board placing area, then the upper cover covers the base through the positioning effect of the first positioning part and the second positioning part, and when the upper cover is connected with the base, the elastic pressing part is pressed against the welding piece so as to provide the acting force facing the PCB for the welding piece. The elastic pressing part is pressed against the welding piece on the PCB to apply a counter-acting force towards the PCB to the welding piece, so that the welding piece is tightly pressed on the PCB, the welding piece is tightly and neatly welded on the PCB, the reject ratio of products is reduced, the production cost is saved, the operation is simple, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB welding, in particular to a welding fixing fixture. Background Art

[0002] At present, during the welding process of some electronic components with PCB boards, problems such as floating and tilting are easily generated between the welding parts and the PCB boards, which affects the welding quality between the PCB boards and the welding parts, increases the product defect rate, and increases the production cost. Therefore, there is an urgent need in the market for a welding fixture that can improve the welding quality of PCB boards. Summary of the invention

[0003] The purpose of the utility model is to address the technical problems existing in the background technology and to propose a welding fixing fixture, comprising a base and an upper cover, wherein the base is provided with a board placing area and a first positioning portion, and the upper cover is provided with a second positioning portion, the board placing area is used for placing a PCB board, the first positioning portion and the second positioning portion are used for realizing the positioning connection between the base and the upper cover, and the upper cover is also provided with an elastic pressing portion, which is used to abut against a welding part on the PCB board to provide a force on the welding part toward the PCB board.

[0004] Furthermore, the elastic pressing part is a spring push rod, which can move between a first position and a second position. When the upper cover is connected to the base, the lower end of the spring push rod is compressed from the first position to the second position under the action of the welding part to provide a reaction force to the welding part.

[0005] Furthermore, the spring push rod includes an outer rod, an inner rod and a first spring. The outer rod is sleeved on the outside of the inner rod and can move between a first position and a second position relative to the inner rod. One end of the first spring is connected to the outer rod and the other end is connected to the inner rod.

[0006] Furthermore, the elastic pressing portion also includes a pressing block, and the pressing block is detachably connected to the lower end of the outer rod.

[0007] Furthermore, the first positioning portion is a limiting hole, and the second positioning portion is a limiting column, and the limiting column is plug-in connected to the limiting hole.

[0008] Furthermore, the base is provided with a first locking portion, the upper cover is provided with a second locking portion, and the first locking portion is snap-connected with the second locking portion.

[0009] Furthermore, the base is provided with a board taking area on one side of the board placing area.

[0010] Furthermore, the board placement area also includes a hollowing area and a sinking area.

[0011] Furthermore, a fixing mechanism is provided on the peripheral side of the board placement area, and the fixing mechanism is used to fix the PCB board.

[0012] Furthermore, the fixing mechanism includes a rotating fixing member, a fixing column and a second spring. The rotating fixing member forms a fixing part and a rotating part at both ends respectively. The rotating part is sleeved on the fixing column. The rotating part can rotate relative to the fixing column to drive the fixing part to rotate. The second spring is sleeved on the fixing column, and one end of the second spring abuts against the top protrusion of the fixing column, and the other end abuts against the rotating part.

[0013] Compared with the prior art, the utility model has the following beneficial technical effects: through the above-mentioned structural setting, when the PCB board is welded, it can be placed on the board placement area, and the upper cover can be closed on the base. When the upper cover is connected to the base, the positioning effect of the first positioning part and the second positioning part can be used to achieve convenient installation of the upper cover and the base. Furthermore, when the upper cover is connected to the base, the elastic pressing part will abut against the welding part on the PCB board. At this time, the elastic pressing part is compressed, and the compressed elastic pressing part can apply a reaction force toward the PCB board to the welding part, thereby pressing the welding part tightly on the PCB board, solving the problems of "floating and tilting between the welding part and the PCB board", so that the welding part is tightly and regularly welded on the PCB board, reducing the product defect rate, saving production costs, and simple operation and convenient use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of the utility model;

[0015] Figure 2 is a cross-sectional view of the elastic pressing portion;

[0016] Figure 3 A cross-sectional view of the fixing mechanism. DETAILED DESCRIPTION

[0017] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0018] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or a specific connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0020] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-Figure 3 As shown, the utility model proposes a welding fixing fixture, including a base 1 and an upper cover 2, the base 1 is provided with a board placement area 21 and a first positioning portion 31, the upper cover 2 is provided with a second positioning portion 32, the board placement area 21 is used to place a PCB board, specifically, the board placement area 21 is a groove structure opened on the base 1, the groove structure has a bottom wall for receiving the PCB board, and the shape of the groove structure matches the shape of the PCB board, further, the first positioning portion 31 and the second positioning portion 32 are used to realize the positioning connection between the base 1 and the upper cover 2, the upper cover 2 is also provided with an elastic pressing portion 4, the elastic pressing portion 4 is used to abut against the welding part on the PCB board to provide a force toward the PCB board to the welding part.

[0022] Through the above-mentioned structural arrangement, when the PCB board is welded, it can be placed on the board placement area, and the upper cover can be closed on the base. When the upper cover is connected to the base, the upper cover and the base can be conveniently installed through the positioning effect of the first positioning part and the second positioning part. Furthermore, when the upper cover is connected to the base, the elastic pressing part will abut against the welding part on the PCB board. At this time, the elastic pressing part is compressed, and the compressed elastic pressing part can exert a reaction force toward the PCB board on the welding part, thereby pressing the welding part tightly on the PCB board, solving the problems of "floating and tilting between the welding part and the PCB board", so that the welding part is tightly and regularly welded on the PCB board, reducing the product defective rate, saving production costs, and simple operation and convenient use.

[0023] Furthermore, in the present embodiment, the elastic pressing portion 4 is a spring push rod, which can move between a first position and a second position. When the upper cover 2 is connected to the base 1, the lower end of the spring push rod is compressed from the first position to the second position under the action of the welding part to provide a reaction force to the welding part. Specifically, the spring push rod includes an outer rod 41, an inner rod 42 and a first spring 43. The outer rod 41 is sleeved on the outside of the inner rod 42 and can move between the first position and the second position relative to the inner rod 42. One end of the first spring 43 is connected to the outer rod 41 and the other end is connected to the inner rod 42. It can be understood that when the spring push rod is in the first position, the first spring 43 is in an extended state. When the lower end of the outer rod 41 is squeezed to the second position by the welding part, the first spring is in a compressed state to provide a reverse force to the welding part.

[0024] Further, as a preference, the elastic pressing portion 4 also includes a pressing block 44, which is detachably connected to the lower end of the outer rod 41. Specifically, the pressing block 44 is made of an elastic material such as silicone, rubber, sponge, etc. A raised connecting portion is provided on the top of the pressing block 44, and the shape of the connecting portion matches the opening at the lower end of the outer rod 41. The connecting portion and the opening at the lower end of the outer rod 41 can be detachably connected by "interference fitting". Through the above-mentioned structural arrangement, the pressing block 44 can increase the contact area between the outer rod 41 and the welded part. Furthermore, because the pressing block 44 is elastic and detachable, it can be adapted to welded parts with different sizes and heights.

[0025] Furthermore, in this embodiment, the first positioning portion 31 is a limiting hole, and the second positioning portion 32 is a limiting column, and the limiting column is plug-in connected to the limiting hole to achieve a positioning connection between the upper cover 2 and the base 1. Further, the base 1 is provided with a first clamping portion, and the upper cover 2 is provided with a second clamping portion, and the first clamping portion is snap-connected with the second clamping portion to achieve a fixed connection between the upper cover 2 and the base 1.

[0026] Furthermore, in the present embodiment, a board taking area 22 is provided on one side of the board placing area 21 of the base 1, and the board taking area 22 is recessed in the bottom wall of the base 1 to facilitate taking the PCB board out of the board placing area 21. Furthermore, the board placing area 21 also includes a hollow area 211 and a sinking area 212. The hollow area 211 penetrates the bottom wall of the board placing area 21, and the sinking area 212 is a groove structure provided on the bottom wall of the board placing area 21. The sinking area 212 has a bottom wall of the sinking area 212, which is used to protect the electronic components on the back of the PCB board. It can be understood that when the PCB board is placed in the board placing area 21, the hollow area 211 is used to adapt to the electronic components on the back of the PCB board, and the sinking area 212 is used to protect the electronic components on the back of the PCB board that are not resistant to high temperatures.

[0027] Furthermore, in the present embodiment, a fixing mechanism 5 is further provided on the peripheral side of the board placement area 21, and the fixing mechanism 5 is used to realize the fixing effect of the PCB board. Specifically, the fixing mechanism 5 includes a rotating fixing member 51, a fixing column 52 and a second spring 53. The rotating fixing member 51 forms a fixing portion 511 and a rotating portion 512 at both ends respectively, and the rotating portion 512 is sleeved on the fixing column 52. The rotating portion 512 rotates relative to the fixing column 52 to drive the fixing portion 511 to rotate. The second spring 53 is sleeved on the fixing column 52, and one end of the second spring abuts against the top protrusion of the fixing column 52, and the other end abuts against the rotating portion 512.

[0028] Through the above arrangement, when the PCB board is placed in the board placement area 21, the rotating part 512 can be rotated relative to the fixing column 52 to move the fixing part 511 to the side of the PCB board, and then an upward force is applied to the fixing part 511 to "lift" the fixing part 511 above the PCB board. At this time, the force is released, and the fixing part 511 is pressed against the PCB board under the action of the second spring to fix the PCB board in the board placement area 21.

[0029] The above are one or more implementation methods provided in combination with specific content, and it is not intended that the specific implementation of the utility model is limited to these descriptions. Any method, structure, etc. similar to or identical to the method, structure, etc. of the utility model, or any technical deduction or replacement based on the concept of the utility model, shall be deemed to be within the protection scope of the utility model.

Claims

1. A welding fixture, characterized in that: The invention comprises a base (1) and an upper cover (2), wherein the base (1) is provided with a board placement area (21) and a first positioning portion (31), and the upper cover (2) is provided with a second positioning portion (32), wherein the board placement area (21) is used for placing a PCB board, and the first positioning portion (31) and the second positioning portion (32) are used for realizing a positioning connection between the base (1) and the upper cover (2), and the upper cover (2) is further provided with an elastic pressing portion (4), wherein the elastic pressing portion (4) is used for abutting against a welding part on the PCB board so as to provide a force acting on the welding part towards the PCB board.

2. A welding fixture according to claim 1, characterized in that: The elastic pressing portion (4) is a spring push rod, which can move between a first position and a second position. When the upper cover (2) is connected to the base (1), the lower end of the spring push rod is compressed from the first position to the second position under the action of the welding part.

3. A welding fixture according to claim 2, characterized in that: The spring push rod comprises an outer rod (41), an inner rod (42) and a first spring (43); the outer rod (41) is sleeved on the outer side of the inner rod (42) and can move between a first position and a second position relative to the inner rod (42); one end of the first spring (43) is connected to the outer rod (41) and the other end is connected to the inner rod (42).

4. A welding fixture according to claim 3, characterized in that: The elastic pressing portion (4) further comprises a pressing block (44), and the pressing block (44) is detachably connected to the lower end of the outer rod (41).

5. A welding fixture according to claim 1, characterized in that: The first positioning portion (31) is a limiting hole, and the second positioning portion (32) is a limiting column, and the limiting column is plug-fitted and connected to the limiting hole.

6. A welding fixture according to claim 1, characterized in that: The base (1) is provided with a first locking portion, and the upper cover (2) is provided with a second locking portion, and the first locking portion is buckledly connected to the second locking portion.

7. A welding fixture according to claim 1, characterized in that: The base (1) is provided with a board taking area (22) on one side of the board placing area (21).

8. A welding fixture according to claim 1, characterized in that: The board placement area (21) also includes a hollowed-out area (211) and a sinking area (212).

9. A welding fixture according to claim 1, characterized in that: The board placement area (21) is also provided with a fixing mechanism (5) on the peripheral side, and the fixing mechanism (5) is used to achieve the fixing function of the PCB board.

10. A welding fixture according to claim 9, characterized in that: The fixing mechanism (5) comprises a rotating fixing member (51), a fixing column (52) and a second spring (53); the rotating fixing member (51) forms a fixing portion (511) and a rotating portion (512) at two ends respectively; the rotating portion (512) is sleeved on the fixing column (52); the rotating portion (512) can rotate relative to the fixing column (52) to drive the fixing portion (511) to rotate; the second spring (53) is sleeved on the fixing column (52); one end of the second spring abuts against a top protrusion of the fixing column (52) and the other end abuts against the rotating portion (512).

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