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Surface mount technology (SMT) printing steel mesh

A technology for printing stencils and stencils, applied in printing, printing machines, rotary printing machines, etc., can solve the problems of large differences in the number of PCB boards, affect printing, and affect production efficiency, and achieve the elimination of cycle time imbalance and convenience Improvement of printing and production efficiency

Inactive Publication Date: 2012-05-23
昶虹电子(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the stencils are all made of ordinary flat stencils, because the points on both sides of the PCB board are very different, and the connectors on the pads of the PCB board directly affect the printing of other components using the flat stencils, affecting production efficiency

Method used

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  • Surface mount technology (SMT) printing steel mesh
  • Surface mount technology (SMT) printing steel mesh
  • Surface mount technology (SMT) printing steel mesh

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] The present invention will be further described below in conjunction with accompanying drawing and embodiment:

[0014] Such as figure 1 , 2 A SMT printing stencil is shown, which includes a stencil body 1, and the stencil body 1 is provided with printing holes 2, and the stencil body 1 protrudes upwards with a plurality of convex parts on the plane 3 where the printing holes 2 are located. 4. The size of the protrusion 4 generally matches the size of the connector, for example, its length is 20 mm, its width is 14 mm, and its height is 2.6 mm. The stencil is generated by ion separation and combination technology, and the arrangement of the protrusions 4 can be set according to the arrangement of the connectors on the PCB.

[0015] When the double-sided process of the PCB board is carried out, the B side of the PCB board is loaded in one jig, and the A side of the PCB board is loaded in another jig, and the stencil body 1 is used for printing, patching, and AOI Afte...

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Abstract

The invention relates to a surface mount technology (SMT) printing steel mesh. The SMT printing steel mesh comprises a steel mesh body, wherein the steel mesh body is provided with printing holes; and a plurality of bumps are upwardly arranged on a plane of the printing holes of the steel mesh body. The steel mesh can effectively keep away from a surface-mounted connector on a printed circuit board (PCB), so that the printing of other elements can be facilitated, the production cost is saved, the production period is greatly shortened, and the influence of unbalanced circulation time caused by difference in number of points on two surfaces is eliminated (the influence during production of two lines of a double-side process is obvious) to greatly improve the production efficiency.

Description

technical field [0001] The invention relates to the field of SMT (Surface Mounted Technology) manufacturing process, in particular to an SMT printing stencil. Background technique [0002] With the rapid development of the electronics industry, there are a wide variety of electronic products, and precision electronic components are widely used in various industries. At the same time, the quality and yield of precision electronic components are required to be higher. The quality of the SMT of the PCB board directly affects the processing efficiency and yield rate of its production, and the quality of the SMT is closely related to the printing stencil, so the structural design of the printing stencil is very important. [0003] The printing stencil is a mold used to print solder paste. When printing solder paste, it is leaked onto the PCB pad through the opening of the stencil, that is, it is printed on the PCB pad through the size of the stencil opening, and then passed throu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41F15/36
Inventor 余勇才
Owner 昶虹电子(苏州)有限公司