Manufacturing method for pattern in stepped groove
A processing method and technology of stepped grooves, which are applied in printed circuit manufacturing, electrical components, printed circuits, etc., can solve the problems of uneven copper surface, cumbersome production, and time-consuming, so as to ensure completeness, simplify the production process, and improve the pass rate. and on-time delivery
Inactive Publication Date: 2017-05-17
SHANGHAI FAST PCB CIRCUIT TECH CORP LTD
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Problems solved by technology
[0003] 1) The production is cumbersome, time-consuming, and not suitable for mass production
[0004] 2) The blue glue has holes and is not full, and if the tape is not attached tightly, it will easily lead to the invasion of the potion and cause damage to the graphics
[0005] 3) Subsequent removal of blue glue may also easily lead to scratches on the inner layer graphics
Method used
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Embodiment
[0033] Such as Figure 1-8 As shown, a processing method for making a pattern in a stepped groove is characterized in that the pattern in the groove is processed by laser milling to ensure the integrity of the pattern in the groove.
[0034] The specific steps of the method are as follows: 1) lamination of inner layer graphics; 2) drilling; 3) reverse milling grooves to expose inner layer graphics; 4) hole making; 5) laser cutting graphics; 6) tin plating; 7) etching; 8) Strip tin.
[0035] The tin-plated area is larger than the pattern and the hole area, and is used to protect the pattern and the hole area. The tinned area is a rectangular area. The laser cutting graphic adopts a fully automatic laser cutting machine.
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The invention relates to a manufacturing method for a pattern in a stepped groove. By processing the pattern in the groove through laser milling and cutting, the completeness of the pattern in the groove is ensured; the manufacturing method specifically comprises the following steps of 1) pressing an inner layer pattern; 2) drilling holes; 3) performing reverse groove milling to expose the inner layer pattern; 4) performing pore formation; 5) cutting the pattern by laser; 6) performing tin plating; 7) etching and 8) performing tin removal. Compared with the prior art, the manufacturing method provided by the invention has the advantages of simplifying the manufacturing flow, ensuring the completeness of the pattern in the groove, effectively improving the percent of pass and punctual delivery ratio of products, and the like.
Description
technical field [0001] The invention relates to a PCB plate-making technology, in particular to a processing method for making graphics in stepped grooves. Background technique [0002] At present, for the production of the graphics in the groove of the stepped plate, the processors basically adopt the method of first making the inner graphics and then pressing them together. In the later process, the graphics in the groove are protected. The specific production process is as follows: Inner layer graphics - pressing - reverse milling groove (exposing the inner layer graphics) - sticking tape or blue glue to protect the inner groove - drilling - hole making - electroplating - taking out before the shape blue gum. There are following defects in this method: [0003] 1) The production is cumbersome, time-consuming, and not suitable for mass production. [0004] 2) The blue glue has holes and is not full, and the adhesive tape is not tight enough to easily cause the liquid m...
Claims
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Patent Timeline
Login to View More IPC IPC(8): H05K3/00
CPCH05K3/0044H05K2203/107
Inventor 余斌周凯舒向云魏梓航魏涛
Owner SHANGHAI FAST PCB CIRCUIT TECH CORP LTD
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