Jig for PCB (printed circuit board)

Abstract

The utility model discloses a jig for a PCB (printed circuit board), which relates to the field of printed circuit production and processing and comprises a step backing plate bottom plate, a PCB body is arranged at the top of the step backing plate bottom plate, a plurality of step backing plate bulges are arranged on one side, close to the PCB body, of the step backing plate bottom plate, and the step backing plate bottom plate and the step backing plate bulges form a jig body. The PCB body is provided with a metallized board edge, the metallized board edge is provided with a plurality of grooves, the positions of the step base plate protrusions correspond to the positions of the grooves of the metallized board edge, and the jig for the PCB is composed of a step base plate base plate and the step base plate protrusions and can support the hollowed-out position of the metallized board edge. The problem of solder resist oil accumulation quality caused by large-area hollow-out of the metalized board edge and insufficient support between the screen printing plate and the PCB during screen printing is solved, the rate of finished products of the PCB is improved, and the method has great economic value and market prospect.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of printed circuit production and processing, and particularly relates to a jig for a PCB. BACKGROUND

[0002] With the rapid development of AI servers, as a core part of the equipment, the metalized edge process has become one of the important processes of power supply PCBs, which has the advantages of improving the mechanical strength, corrosion resistance, reducing electromagnetic radiation, and heat dissipation of PCBs.

[0003] Due to the particularity of the process flow, the metal layer on the edge of the board must be made before solder mask, but because the metalized edge is large in size, the support between the screen and the PCB is insufficient during silk printing, which leads to solder mask oil accumulation problems, so a jig is needed to solve the problem of metalized edge solder mask oil accumulation by filling the large-size hollowed-out position of the metalized edge. SUMMARY

[0004] The utility model discloses a jig for a PCB to solve the problems raised in the background art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme:

[0006] A jig for a PCB, comprising a stepped pad base plate, the stepped pad base plate top is placed with PCB body, the stepped pad base plate is close to the side of PCB body and is provided with a plurality of stepped pad protrusions, the stepped pad base plate and stepped pad protrusion constitute jig body, the PCB body is provided with metalized edge, the metalized edge is provided with a plurality of grooves, the position of stepped pad protrusion corresponds with the groove position of metalized edge, the hollowed-out shape of metalized edge is oval or polygon.

[0007] On the basis of the above technical scheme, the utility model also provides the following optional technical scheme:

[0008] In an optional scheme, the size of the hollowed-out position of the metalized edge is 1-30mm.

[0009] In an optional scheme, the height of the stepped pad protrusion is 20-100um less than the thickness of the PCB body.

[0010] In an optional scheme, the size of the stepped pad protrusion is 40-80um less than the single side of the groove of the PCB body, and the remaining thickness of the stepped pad base plate is 0.5-2.0mm.

[0011] In an alternative, the manufacture of the metalized board edge requires silk printing solder resist ink PCB board, the surface is treated by chemical or mechanical method.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The jig for PCB is composed of a stepped cushion bottom plate and stepped cushion protrusions, can support the hollowing position of the metalized board edge, solves the large-area hollowing of the metalized board edge, the insufficient support between the screen and the PCB during silk printing, causes the solder resist oil quality problem, improves the yield of the PCB, and has great economic value and market prospect. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the jig for PCB;

[0015] Figure 2 It is a structural schematic view of the PCB body in the jig for PCB;

[0016] Figure 3 It is a structural schematic view of the jig for PCB during solder resist silk printing;

[0017] Marked with 1-Stepped cushion bottom plate, 2-Stepped cushion protrusion, 3-PCB body, 4-Metalized board edge, 5-Slot. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical scheme and advantages of the utility model more clearly, the following will be further described in detail by combining with the drawings and examples; in the drawings or the description, similar or same parts use the same mark, and in the practical application, the shape, thickness or height of each component can be enlarged or reduced. The various examples listed in the utility model are only used to illustrate the utility model, and are not used to limit the scope of the utility model. Any obvious modification or change made to the utility model does not deviate from the spirit and scope of the utility model.

[0019] In one embodiment, as shown in Figures 1-3 A jig for PCB, including stepped cushion bottom plate 1, the top of the stepped cushion bottom plate 1 is placed with PCB body 3, the side of the stepped cushion bottom plate 1 close to PCB body 3 is provided with a plurality of stepped cushion protrusions 2, the stepped cushion bottom plate 1 and stepped cushion protrusion 2 constitute jig body, the PCB body 3 is provided with metalized board edge 4, a plurality of slots 5 are formed in the metalized board edge 4, the position of the stepped cushion protrusion 2 corresponds to the slot 5 position of the PCB body 3, and the hollowing shape of the metalized board edge 4 is oval or polygonal.

[0020] The jig for PCB is composed of a stepped pad base plate 1 and a stepped pad protrusion 2, supports a large area of the metalized plate edge 4, prevents insufficient support between the screen printing and the PCB, and causes the problem of solder resist oil quality. As an embodiment, the left and right and up and down positions of each component in the drawing are only one arrangement, and the specific position is set according to the specific needs.

[0021] In one embodiment, as shown in Figure 1 The length or width of the metalized plate edge 4 is 1-30mm.

[0022] In one embodiment, as shown in Figure 1 The height of the stepped pad protrusion 2 is 20-100μm less than the thickness of the PCB body 3.

[0023] In one embodiment, as shown in Figure 1 The length or width of the stepped pad protrusion position is 40-80μm less than the single side of the PCB body metalized plate edge slot, and the remaining thickness of the stepped pad base plate 1 is 0.5-2.0mm.

[0024] In one embodiment, as shown in Figure 1 The metalized plate edge 4 needs to be made of screen printing solder resist ink PCB, and the surface is treated by chemical or mechanical method.

[0025] The above embodiment of the utility model provides a jig for PCB, and the specific operation process is:

[0026] 1) The thickness of the PCB body 3 is 0.7mm, the metalized plate edge 4 is 18x0.6mm, the stepped pad base plate 1 is made according to the shape of the metalized plate edge 4 of the PCB body 3, the thickness of the stepped pad protrusion 2 is 0.67mm, the size of the pad protrusion position is 1.7x0.5mm, and the remaining thickness of the pad base plate is 1.2mm.

[0027] 2) The outer surface of the PCB body 3 is pretreated by chemical or mechanical method.

[0028] 3) The stepped pad protrusion 2 fills the metalized plate edge 4 of the PCB body 3, and the customer required pattern is obtained by pre-curing, exposure, development and post-curing.

[0029] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto, and any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present disclosure, which should be covered within the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be subject to the protection scope of the claims.

Claims

1. A jig for PCB board comprising a stepped pallet base plate, characterized in that, The stepped cushion plate bottom plate top is placed with a PCB body, the stepped cushion plate bottom plate is provided with a plurality of stepped cushion plate protrusions on the side close to the PCB body, the stepped cushion plate bottom plate and the stepped cushion plate protrusions constitute a jig body, the PCB body is provided with a metalized plate edge, a plurality of slots are formed in the metalized plate edge, the positions of the stepped cushion plate protrusions correspond to the slot positions of the metalized plate edge, and the hollow shape of the metalized plate edge is an ellipse or a polygon.

2. The jig for PCB board according to claim 1, wherein, The size of the hollow position of the metalized plate edge is 1-30 mm.

3. The jig for PCB board according to claim 1, wherein, The height of the stepped cushion plate protrusion is 20-100 μm less than the thickness of the PCB body.

4. The jig for PCB board according to claim 1, wherein, The size of the stepped cushion plate protrusion is 40-80 μm less than the single side of the slot of the PCB body, and the remaining thickness of the stepped cushion plate bottom plate is 0.5-2.0 mm.

5. The jig for PCB board according to claim 1, wherein, The metalized plate edge is made of a silk printing solder resist ink PCB board, and the surface is treated by a chemical or mechanical method.

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