A separate jig for PCBA three-proof coating

Abstract

The utility model discloses a separation type jig for PCBA three -proof coating belongs to PCBA three -proof coating production technical field. It includes the substrate, is equipped with a plurality of positioning hole on the substrate, positioning peg is equipped with a plurality of, positioning peg with Positioning hole detachable connection, through a plurality of positioning peg is installed on the positioning hole according to the shape of PCBA board for positioning PCBA board, and the present application does not need to lock the fastening between PCBA and jig, can realize the accurate positioning of PCBA on the jig, and easily takes and places, is more favorable to realize the automatic taking and placing PCBA.

Description

Technical Field

[0001] This utility model relates to a detachable fixture for conformal coating of PCBA, belonging to the field of PCBA conformal coating production technology. Background Technology

[0002] In conformal coating production lines, the industry generally uses the same type of fixture as wave soldering. Before conformal coating, PCBAs need to be manually installed onto the corresponding fixtures, and then the latches need to be manually tightened to combine the PCBAs and fixtures into one unit. If the PCBAs need to be flipped during the coating process, the entire fixture needs to be flipped. After coating is completed, the latches need to be manually opened to separate the PCBAs and fixtures. This method has poor fixture versatility, high cost, and a large amount of manual labor, which is not conducive to the automation of PCBA handling. In addition, there is a shadow at the overlapping joint of the PCBAs and fixtures, which affects the UV irradiation and results in poor curing effect of conformal coatings cured by UV light. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a separate fixture for conformal coating of PCBA. This solves the problems of the locking form of PCBA and fixture fixing, which is not conducive to the automated handling of PCBA, and the shadow at the overlapping joint of PCBA and fixture, which affects the ultraviolet light irradiation and leads to poor curing effect of conformal coating using ultraviolet light.

[0004] To achieve the above objectives / to solve the above technical problems, this utility model adopts the following technical solution:

[0005] A detachable fixture for conformal coating of PCBA, comprising:

[0006] A substrate, wherein the substrate is provided with a plurality of positioning holes;

[0007] Positioning pins, wherein multiple positioning pins are provided, and the positioning pins are detachably connected to the positioning holes; the multiple positioning pins are installed on the positioning holes according to the shape of the PCBA for positioning the PCBA.

[0008] Optionally, the positioning holes are distributed throughout the substrate.

[0009] Optionally, the number of positioning pins is at least sufficient to position the four sides of the PCBA board.

[0010] Optionally, the positioning end of the positioning pin is provided with a positioning cone.

[0011] Optionally, the positioning cone is funnel-shaped.

[0012] Optionally, the positioning pin has a fixing end that matches the positioning hole.

[0013] Optionally, the base plate and the locating pin are made of stainless steel.

[0014] Optionally, the positioning pin is fixed to the PCBA through point contact.

[0015] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0016] This utility model fixture is highly versatile, reducing the types and quantities of fixtures and lowering costs. At the same time, the base plate and positioning pins are made of stainless steel, which is cheaper than the synthetic stone material commonly used in the industry.

[0017] Since this utility model does not require locking fasteners between the PCBA and the fixture, it can achieve precise positioning of the PCBA on the fixture and easy picking and placing, which is more conducive to realizing automated PCBA picking and placing.

[0018] The PCBA and fixture of this invention adopt a point-to-point connection, which minimizes the impact of the fixture on the curing of UV-cured conformal coating. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the fixture structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the substrate structure in this utility model;

[0021] Figure 3 This is a schematic diagram of the positioning pin structure in this utility model;

[0022] Reference numerals: 1. Base plate; 2. Positioning pin; 21. Positioning cone; 22. Fixing end; 3. Positioning hole. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0024] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0025] like Figure 1 As shown, a detachable fixture for conformal coating of PCBA includes:

[0026] Substrate 1, wherein a plurality of positioning holes 3 are provided on substrate 1;

[0027] Positioning pins 2, multiple positioning pins 2 are provided, and the positioning pins 2 are detachably connected to the positioning holes 3; the multiple positioning pins 2 are installed on the positioning holes 3 according to the shape of the PCBA for positioning the PCBA.

[0028] In this embodiment, the positioning holes 3 are distributed all over the substrate 1, and the number of positioning pins 2 is at least enough to position the four sides of the PCBA board. The distribution of the positioning holes 3 is arranged according to the shape of the PCBA.

[0029] To further explain, the positioning pin 2 has a positioning cone 21 at its positioning end, the positioning cone 21 being flared in shape, and the positioning pin 2 having a fixing end 22 that matches the positioning hole 3. The positioning pin 2 is fixed to the PCBA through point contact via the positioning cone 21, which minimizes the impact of the fixture on the curing of the UV-cured conformal coating.

[0030] In this specific implementation process: the substrate 1 is filled with holes, and the positioning pins 2 are installed into the appropriate holes according to the shape of the PCBA. The PCBA is then placed on the positioning pins 2. In this way, the PCBA and the fixture do not need to be locked together, achieving precise positioning of the PCBA on the fixture and easy placement and removal, which is more conducive to the automated handling of PCBAs. The positioning pins 2 are small in size, avoiding shadows at the overlapping joint of the PCBA and the fixture, which is beneficial for the curing of the conformal coating under ultraviolet light.

[0031] This utility model fixture is highly versatile, reducing the types and quantities of fixtures and lowering costs. At the same time, the base plate and positioning pins are made of stainless steel, which is cheaper than the synthetic stone material commonly used in the industry.

[0032] Since this invention does not require locking fasteners between the PCBA and the fixture, it enables precise positioning of the PCBA on the fixture and easy placement and removal, which is more conducive to the automated placement and removal of PCBA.

[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0034] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A detachable fixture for conformal coating of PCBA, characterized in that, include: The substrate (1) has a plurality of positioning holes (3). Positioning pins (2), multiple positioning pins (2) are provided, and the positioning pins (2) are detachably connected to the positioning holes (3); multiple positioning pins (2) are installed on the positioning holes (3) according to the shape of the PCBA for positioning the PCBA.

2. The detachable fixture for conformal coating of PCBA according to claim 1, characterized in that, The positioning holes (3) are distributed on the substrate (1).

3. The detachable fixture for conformal coating of PCBA according to claim 1, characterized in that, The number of positioning pins (2) is at least sufficient to position the four sides of the PCBA board.

4. The detachable fixture for conformal coating of PCBA according to claim 1, characterized in that, The positioning pin (2) has a positioning cone (21) at its positioning end.

5. The detachable fixture for conformal coating of PCBA according to claim 4, characterized in that, The positioning cone (21) is flared.

6. The detachable fixture for conformal coating of PCBA according to claim 1, characterized in that, The positioning pin (2) is provided with a fixed end (22) that matches the positioning hole (3).

7. The detachable fixture for conformal coating of PCBA according to claim 1, characterized in that, The substrate (1) and the positioning pin (2) are made of stainless steel.

8. The detachable fixture for conformal coating of PCBA according to claim 1, characterized in that, The positioning pin (2) is fixed to the PCBA by point contact.

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