Vacuum breaking system for screen printing machine flexible wire printing platform discharge
A screen printing machine and vacuum breaking technology, which is applied in the direction of screen printing machines, printing machines, rotary printing machines, etc., can solve the problems of machine downtime, silicon wafer scrapping, and distorted transmission, so as to reduce the scrapping rate and increase production capacity Effect
Inactive Publication Date: 2014-07-02
ZHEJIANG FORTUNE ENERGY
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Problems solved by technology
When the printing machine is unloading the printing pad, due to the influence of micro-vacuum, sometimes there will be abnormal phenomena such as "the transfer motor alarms, half of the silicon wafer is passed out of the printing pad, and the printing pad is thrown", which leads to machine shutdown and silicon wafer scrapping, affecting production capacity and increased scrap rates
In the air circuit diagram of the original screen printing machine, only one vacuum pipe is connected, without a vacuum release device. There is a defect in this design, that is, the residual micro-vacuum cannot be released, and the transmission of silicon wafers on the table is blocked, resulting in skewed transmission or wafer throwing Phenomenon
Method used
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Embodiment Construction
[0011] The design scheme of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0012] In this embodiment, the gas circuit diagram and circuit diagram in the vacuum breaking system of the flexible line printing pad of the screen printing machine are as attached figure 2 with 3 As shown, the working process of loading and unloading is as follows:
[0013] 1. Print pad feeding process:
[0014] a.I1 0A22 generates a vacuum signal for the printing pad, after the signal is generated, it passes through the signal terminals of the normally open relay K1 NO and the normally closed relay K2 NC respectively;
[0015] b. When the normally open relay K1 receives the signal, the relay terminal pulls in, and the attached Figure 4 The circuit of the two-position two-way valve YV1 is working, and the vacuum is connected; at the same time, the normally closed relay K2 NC is in the disconnected state, and the two-position two...
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The invention discloses a vacuum breaking system for screen printing machine flexible wire printing platform discharge. The vacuum breaking system comprises a gas path system and a circuit system. The gas path system is composed of a vacuum pipeline, a throttling valve V1 and vacuum valves YV1 and YV2. The circuit system is composed of normally-open electromagnetic relays K1NO and K2NC. The vacuum breaking system has the advantages that the vacuum breaking system is additionally arranged for screen printing machine platform discharge, so printing platform discharge can be smooth, abnormal phenomena like alarm of a paper transfer motor and sheet throwing of the printing platform are effectively avoided, the productivity is improved, the scrap rate is reduced, and meanwhile printing platform feeding is not affected.
Description
technical field [0001] The invention relates to a silk screen printing process in the manufacturing technology of crystalline silicon solar photovoltaic cells, in particular to a screen printing machine flexible line printing pad blanking and breaking vacuum system. Background technique [0002] In the screen printing process of crystalline silicon solar photovoltaic cells, a printing machine is used to print the positive electrode and the back electrode on the silicon wafer according to the specified pattern. Before and after printing, it needs to go through the process of loading and unloading. A micro-vacuum is required when the printing pad of the screen machine is loaded to ensure that the printing pad paper is absorbed and smooth. When the printing machine is unloading the printing pad, due to the influence of micro-vacuum, sometimes there will be abnormal phenomena such as "the transfer motor alarms, half of the silicon wafer is passed out of the printing pad, and th...
Claims
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Inventor 孙从涛
Owner ZHEJIANG FORTUNE ENERGY