ASM adjustable steel mesh clamping device

Abstract

The invention discloses an ASM adjustable steel mesh clamping device. The device comprises a first positioning mechanism and a second positioning mechanism opposite to the first positioning mechanism. The first positioning mechanism and the second positioning mechanism both comprise a steel mesh positioning rack, a driving device erected at one end of the steel mesh positioning rack, at least one guide block erected on the steel mesh positioning rack, a transmission connection rod which is erected on the guide block and in transmission connection with the driving device, and at least one clamping unit which is erected on the steel mesh positioning rack and in transmission connection with the transmission connection rod. Each positioning mechanism only needs one driving cylinder to drive multiple clamping units to precisely position an ASM adjustable steel mesh. The device has the advantages of being high and stable in positioning precision, high in printing precision and high in production efficiency. The ASM adjustable steel mesh clamping device is very easy to assemble, assembly time is short, efficiency is high, equipment purchasing cost is low, service life is long, later maintenance is easy, and time for maintenance is short.

Description

technical field [0001] The invention relates to the field of surface mount technology (SMT), and more specifically relates to an ASM adjustable steel mesh clamping device. Background technique [0002] ASM (Adjustable Stencil Mount, adjustable stencil mount), the ASM adjustable stencil clamping device traditionally used for printing solder paste or red glue on printed circuit boards includes a first support frame and a second support frame, The first support frame and the second support frame are equipped with pull rope cylinders, several briquetting blocks and pull ropes respectively. Rotate the connection, tighten the stay rope through the stay rope cylinder to make the first pressing block move down to compress the steel mesh. The stencil positioning device of this type of structure has the following defects: [0003] 1. When assembling, it is necessary to thread a drawstring and connect the drawstring to each pressing block, so the assembly process is very cumbersome, ...

AI Technical Summary

Problems solved by technology

[0003] 1. When assembling, it is necessary to thread a drawstring and connect the drawstring to each pressing block, so the assembly process is very cumbersome, time-consuming, inefficient, and inconvenient to assemble;

[0004] 2. During use, the pull rope is prone to breakage, which causes the stencil of the printing machine to be unable to be positioned, and the pull rope needs to be re-threaded. The maintenance time generally takes two hours, so the maintenance is very time-consuming, and the maintenance cost is greatly increased. At the same time, it still leads to a great reduction in the working efficiency of the SMT printing machine.

[0005] There is also an ASM adjustable stencil clamping device for printing solder paste or red glue on a printed circuit board, which includes a first support frame and a second support frame, and the first support frame and the second support frame are respectively installed There are a number of compression cylinders, which are used to drive the pressure plate to position the steel mesh of the printing machine. Due to the use of multiple compression cylinders, the equipment purchase cost is high and maintenance is inconvenient

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