Splicing method of PCB

The PCB splicing method includes the method of creating finished board splicing worksheets and blank board splicing worksheets by using Excel programs stored in well-known computers and the use method of the worksheets; The finished board splicing worksheet is used to complete the process of splicing the finished board on the blank. Each column of cells in the finished board splicing worksheet is used to place the same kind of data of different blank board splicing schemes or the Excel internal function calculation formula of the data, and each row of cells is used to place different kinds of data of the same splicing scheme or the Excel internal function calculation formula of the data. The specific method for creating the finished board splicing worksheet is as follows:

(1) Start an Excel program stored in a well-known computer, create a new workbook, and select a worksheet;

(2) Use a cell in the table to enter the name of the worksheet:

(3) use a row of cells in the table as the header of the worksheet, and input the category name of the data in its column in each cell;

(4) Create a data entry area:

(5) create a data operation area

(6) create a data output area

(7) create a jigsaw puzzle operation area

(8) Create an indirect output area, use the internal search and reference function of Excel to reference all the data in the worksheet of the jigsaw puzzle operation area, and place it in the indirect output area.


PCB splicing skills
PCB splicing is something that PCB factories often do. What should we pay attention to when splicing? What are the essentials of PCB jigsaw puzzle? Summarize it for you as follows:

The first is the problem of jigsaw puzzle. We know that the main problem of jigsaw puzzle is to save the production cost. The width of PCB jigsaw puzzle is ≤ 260 mm ~ 300 mm, which varies according to different production lines. Because we may have a lot of materials, and one gun of our own processing equipment corresponds to one module, if the jigsaw puzzle exceeds the range of modules, the processing speed will become very slow.

The outer frame (clamping edge) of PCB jigsaw puzzle should be carefully considered to ensure that the PCB jigsaw puzzle will not deform after being fixed on the fixture (generally, it is not allowed to open V grooves on this edge). For the layout of components, all directions should be consistent at first, and mirror images cannot occur, which will cause the problem of coordinate positioning in processing.

Secondly, there can be no connector protruding from the edge (between the outer frame of the jigsaw puzzle and the inner small board, and between the small board and the small board), which will hinder the tool from splitting after welding.

In order to ensure the position and levelness of the detection plate, we need to set more than three positioning points on the edge of the plate. By optically detecting these three points, we can get the reference coordinates of the whole processing and the levelness of the plate.

The correct way is that the distance is 5mm away from the edge and the distance is different when the traveling direction is inconsistent (easy to distinguish the entering direction): [When setting the reference anchor point, a solder-free zone larger than 1.5 mm is usually left around the anchor point, and there cannot be similar pads or other similar ones]

There should be at least three locating holes in each small board, with an aperture of 3≤6 mm, and wiring or patch is not allowed within 1mm of the edge locating hole (to prevent misjudgment). PCB splicing is mainly to save production and processing costs (it will make the processing speed of the machine several times faster). Unreasonable design will make the later period full of problems. You can take a closer look to prevent problems.

The first is the problem of jigsaw puzzle. We know that the main problem of jigsaw puzzle is to save the production cost. The width of PCB jigsaw puzzle is ≤ 260 mm ~ 300 mm, which varies according to different production lines. Because we may have a lot of materials, and one gun of our own processing equipment corresponds to one module, if the jigsaw puzzle exceeds the range of modules, the processing speed will become very slow.

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