PCB splicing refers to the circuit board manufacturers in order to facilitate production and cost savings will be smaller PCB splicing together production. In addition to improving production efficiency and cost savings, collocation can also facilitate the PCBA processing plant for patch soldering.

When doing collocation can be easily separated from multiple boards,2 oz copper thickness in mm to avoid damage to the circuit board when separating, according to the shape of your collocation of a single species to determine the use of which collocation.PCB collocation of the main way of V-CUT, punching grooves, stamp holes in these three ways.

1, V-CUT

V-CUT refers to several kinds of boards or the same boards together in a combination of splicing, and then PCB to do board processing is completed between the boards with a V-CUT machine cut a V-shaped groove can be used to break open. It is a more popular way today.

2, punch groove

Punch groove refers to the board and board or board inside the board as needed with a milling machine milling empty, equivalent to digging out.

3, Stamp hole

The stamp used here is the use of very small holes to link the board with the board, looks like a stamp above the sawtooth shape, so called stamp hole link. Stamp hole link is between the board and the board around the need for high control burrs, that is, you can only use a little stamp holes to replace the V line.

PCB patchwork board tips:

1, PCB splicing board outer frame (clamping edge) should be used to close the loop design,plated through hole vs via to ensure that the PCB splicing board will not be deformed after fixed in the fixture;

2, PCB board width ≤ 260mm (SIEMENS line) or ≤ 300mm (FUJI line); if you need automatic dispensing, PCB board width × length ≤ 125mm × 180mm;

3, PCB board shape as close as possible to the square, recommended 2 × 2, 3 × 3, ...... board; but do not put together into a yin and yang board;

4, the center distance between the small board control between 75mm ~ 145mm;

5, set the benchmark positioning point, generally around the positioning point is left 1.5mm larger than its non-resistance welding area;

6, the outer frame of the patchwork board and the internal small board, small boards and small boards can not be near the connection point of large devices or outstretched devices, and components and PCB board edges should leave more than 0.5mm of space to ensure that the cutting tool operates normally;

7, four positioning holes in the four corners of the outer frame of the patchwork board, aperture 4mm ± 0.01mm; hole strength should be moderate, to ensure that in the process of up and down the board will not break; aperture and positional accuracy should be high, the hole wall is smooth and burr-free;

8, PCB patchwork within each small board at least three positioning holes, 3 ≤ aperture ≤ 6mm, edge positioning holes within 1mm does not allow wiring or patch;

9, used for PCB board positioning and for fine-pitch device positioning datum symbols, in principle, the pitch is less than 0.65mm QFP should be set in its diagonal position; used for collocation PCB sub-panel positioning datum symbols should be used in pairs, arranged in the positioning elements of the diagonal;