Carrier plate for PCB horizontal line operation test piece

Abstract

The utility model discloses a support plate for a PCB horizontal line operation test piece, which comprises a fixing layer, a placing layer and a supporting layer which are sequentially connected from top to bottom, through holes and a fixing block are arranged on the fixing layer, the through holes comprise a first fixing hole and a second fixing hole which are overlapped, the first fixing hole and the second fixing hole are consistent in shape, and the fixing block is arranged on the fixing layer. The first fixing hole and the second fixing hole are arranged in parallel, the center points of the first fixing hole and the second fixing hole coincide, the first fixing hole deflects by a certain angle relative to the second fixing hole, the fixing block is connected to the inner side line of the through hole and is tangent to the side line of the first fixing hole and the side line of the second fixing hole, the placing layer is provided with placing holes used for placing test pieces, and the supporting layer is provided with supporting holes. The midperpendicular of the through hole, the midperpendicular of the placing hole and the midperpendicular of the supporting hole coincide.

Description

Technical Field

[0001] The invention relates to a carrier board for a PCB horizontal line operation test piece, and belongs to the technical field of PCB board manufacturing process. Background Art

[0002] At present, the horizontal PTH line of PCB is rolling transmission, with water spray impact on the top and bottom. The minimum board is defined as 300mm*400mm or more to ensure that the board can pass normally. In order to ensure stable output, a small piece of 100mm*100mm is required to monitor the stability of the bite amount in each shift. The transmission operation small piece is generally: a large board in front, a small test piece in the back, fixed with copper wire. The actual copper wire is higher than the board surface, which is easy to scratch and damage the roller, affecting the quality. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the purpose of the utility model is to provide a carrier board for a PCB horizontal line operation test piece, which solves the problem in the prior art that the roller is easily scratched during the test piece testing process, thereby affecting the quality.

[0004] In order to achieve the above objectives, the utility model adopts the following technical solutions:

[0005] A carrier board for a PCB horizontal line operation test piece, comprising a fixing layer, a placement layer and a supporting layer connected in sequence from top to bottom;

[0006] The fixing layer is provided with a through hole and a fixing block, the through hole includes a first fixing hole and a second fixing hole which are overlapped, the first fixing hole and the second fixing hole have the same shape, and the center points coincide, the first fixing hole is deflected by a certain angle relative to the second fixing hole, the fixing block is connected to the inner edge line of the through hole, and the fixing block is tangent to the edge lines of the first fixing hole and the second fixing hole respectively;

[0007] The placement layer is provided with a placement hole for placing the test piece;

[0008] The supporting layer is provided with a supporting hole, and the mid-perpendicular lines of the through hole, the placement hole and the supporting hole coincide with each other.

[0009] Furthermore, the shapes of the first fixing hole and the second fixing hole are consistent with those of the test piece, and their sizes are larger than those of the test piece.

[0010] Furthermore, the sizes of the first fixing hole and the second fixing hole are 0-0.5 mm larger than the size of the test piece.

[0011] Furthermore, the shape of the aforementioned placement hole is consistent with that of the test piece, and its size is larger than that of the test piece.

[0012] Furthermore, the size of the aforementioned placement hole is 0-0.5 mm larger than the size of the test piece.

[0013] Furthermore, the shape of the aforementioned support hole is consistent with that of the test piece, and its size is larger than that of the test piece, and support blocks are also provided at the inner corners of the support hole.

[0014] Furthermore, the size of the aforementioned support hole is 0-0.5 mm larger than the size of the test piece.

[0015] Furthermore, the upper plane of the aforementioned support block is flush with the upper plane of the support layer.

[0016] Beneficial effects achieved by the utility model:

[0017] The middle of the carrier board is scooped up and the test piece is embedded in the middle. The fixing layer and the support layer ensure that the upper and lower sides of the test piece are exposed for testing. The test piece is fixed by the placement layer without affecting the passability. The copper wire fixing method is abandoned to ensure the quality during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic cross-sectional view of a carrier plate of the present utility model;

[0019] FIG2 is a schematic diagram of a fixed layer of the utility model;

[0020] Fig. 3 is a schematic diagram of the prevention layer of the utility model;

[0021] FIG. 4 is a schematic diagram of a support layer of the utility model.

[0022] The meanings of the reference numerals in the figure are: 1-carrier; 2-fixing layer; 3-placing layer; 4-supporting layer; 5-test piece; 21-first fixing hole; 22-second fixing hole; 23-fixing block; 41-supporting block; 42-supporting hole. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0024] The present embodiment discloses a carrier board for a PCB horizontal line operation test piece, as shown in FIG1 , comprising a fixing layer 2, a placement layer 3 and a support layer 4, wherein the fixing layer 2, the placement layer 3 and the support layer 4 are stacked in sequence from top to bottom.

[0025] As shown in FIG2 , the fixing layer 2 is provided with through holes and fixing blocks 23. The through holes include a first fixing hole 21 and a second fixing hole 22. The first fixing hole 21 and the second fixing hole 22 are of the same shape and their center points coincide. The first fixing hole 21 is obtained by rotating a certain angle along their common center point relative to the second fixing hole 22. The size design of the first fixing hole 21 and the second fixing hole 22 allows the test piece to pass through. In order to facilitate the insertion of the test piece and reduce the shaking of the test piece after insertion and enhance its stability, the shape of the first fixing hole 21 and the second fixing hole 22 is consistent with the test piece, and their size is 0-0.5mm larger than the size of the test piece. Several fixing blocks 23 are also connected to each side of the inner side of the through hole, and the fixing blocks 23 are tangent to the edge lines of the first fixing hole 21 and the second fixing hole 22 respectively.

[0026] As shown in FIG3 , a placement hole for placing the test piece 5 is provided on the placement layer 3. In order to facilitate the placement of the test piece and reduce the shaking of the test piece after placement and enhance its stability, the shape of the placement hole is consistent with the test piece and its size is 0-0.5mm larger than the size of the test piece.

[0027] As shown in FIG4 , a support hole 42 is provided on the support layer 4. The shape of the support hole 42 is consistent with that of the test piece. To ensure the maximum exposed test area, its size is 0-0.5 mm larger than that of the test piece. Several support blocks 41 are also provided at the corners of the support hole 42 to support the test piece and ensure that it does not fall off.

[0028] The practical method of the carrier in this embodiment is as follows: the fixed layer 2, the placement layer 3 and the support layer 4 are stacked in sequence. Initially, the placement hole is rotated to align with the first fixed hole 21, and the test piece is placed from the first fixed hole 21 into the placement hole, and then the placement hole is rotated to align with the second fixed hole 22. At this time, the top surface of the test piece is supported and fixed by the fixed block 23, and the bottom surface of the test piece is supported by the support block 41 to limit its up and down movement. Through the through hole on the fixed layer 2 and the support hole 42 on the support layer 3, the test piece is exposed for testing.

[0029] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A carrier board for a PCB horizontal line operation test piece, characterized in that: It comprises a fixing layer (2), a placement layer (3) and a supporting layer (4) which are connected in sequence from top to bottom; The fixing layer (2) is provided with a through hole and a fixing block (23), the through hole comprising a first fixing hole (21) and a second fixing hole (22) which are arranged in an overlapping manner, the first fixing hole (21) and the second fixing hole (22) having the same shape and having their center points coincident, the first fixing hole (21) being deflected at a certain angle relative to the second fixing hole (22), the fixing block (23) being connected to the inner edge line of the through hole, and the fixing block (23) being tangent to the edge lines of the first fixing hole (21) and the second fixing hole (22) respectively; The placement layer (3) is provided with a placement hole for placing the test piece; The support layer (4) is provided with a support hole (42), and the perpendicular midlines of the through hole, the placement hole and the support hole (42) coincide with each other.

2. The carrier board for PCB horizontal line operation test piece according to claim 1, characterized in that: The shapes of the first fixing hole (21) and the second fixing hole (22) are consistent with those of the test piece, and their sizes are larger than those of the test piece.

3. The carrier board for PCB horizontal line operation test piece according to claim 2, characterized in that: The sizes of the first fixing hole (21) and the second fixing hole (22) are 0-0.5 mm larger than the size of the test piece.

4. The carrier board for PCB horizontal line operation test piece according to claim 1, characterized in that: The shape of the placement hole is consistent with that of the test piece, and the size thereof is larger than that of the test piece.

5. The carrier board for PCB horizontal line operation test piece according to claim 4, characterized in that: The size of the placement hole is 0-0.5 mm larger than the size of the test piece.

6. The carrier board for PCB horizontal line operation test piece according to claim 1, characterized in that: The support hole (42) has a shape consistent with that of the test piece, and its size is larger than that of the test piece. Support blocks (41) are also provided at the inner corners of the support hole (42).

7. The carrier board for PCB horizontal line operation test piece according to claim 6, characterized in that: The size of the support hole (42) is 0-0.5 mm larger than the size of the test piece.

8. The carrier board for PCB horizontal line operation test piece according to claim 6, characterized in that: The upper plane of the support block (41) is flush with the upper plane of the support layer (4).

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