Printing pressure control device of battery plate printer

Abstract

The invention aims to provide a printing pressure control device of a battery plate printer, relating to the technical field of silk screen printers. An ink masking base integer is provided with a guide rail, a linear motor stator, a weight balance mechanism of the printing seat integer, a grating feedback device and a zero-position switch which can form a position loop, and a control circuit of a linear motor position mode and an auxiliary moment output mode under the position mode; a printing seat integer is connected with a printing scraper body and is provided with a guide rail sliding block and a pressure control linear motor rotor; the printing seat integer is connected with a piston rod of a balance air cylinder which is connected with an air pressure adjusting device; and the liner motor adopts an iron core free linear motor without cogging effect. Compared with the traditional pneumatic pressure printing technology and a pure position control pressure printing method, the device can realize the advantages of higher pressure control accuracy, more uniform printing pressure output, high printing quality, high work efficiency, wide application range and the like.

Description

technical field [0001] The invention relates to the technical field of screen printing machines. Background technique [0002] Printing pressure is the basis of printing machine design and use. It is not only the fundamental guarantee of modern printing, but also determines the quality of printing to a large extent. With the widespread application of solar cell technology, the printing quality of silicon wafers for solar cells has become a key to ensure the conversion efficiency of solar cells. Modern printing technology puts forward high-efficiency, stable and precise control requirements in terms of production efficiency and control precision. However, the pneumatic pressure printing method and position pressure printing method used in the past can no longer meet the requirements. For high-precision printing, such as screen printing for LTCC, a deviation of ±0.2N is required for the control accuracy. Due to the defects of pneumatic pressure printing itself: low printing ...

AI Technical Summary

Problems solved by technology

However, the pneumatic pressure printing method and position pressure printing method used in the past can no longer meet the requirements.

For high-precision printing, such as screen printing for LTCC, a deviation of ±0.2N is required for the control accuracy. Due to the defects of pneumatic pressure printing itself: low printing pressure control accuracy, slow printing speed, and rough printing quality, this This printing method can no longer meet the requirements of the system. Pneumatic pressure printing completes the output of force by controlling the pressure of the air pressure source. However, due to the low accuracy of air pressure adjustment, the accuracy of pressure output is further affected. In the case of repeated output of the same pressure The repetition accuracy is poor. Due to the control of the cylinder, the response of the hardware is delayed, which affects the printing efficiency of the whole machine. Because the output accuracy of this method is low, the printing quality cannot meet the requirements.

However, some other printing equipment adopt position control (pressure control through screen deformation), which requires consistent screen deformation. However, due to the loosening of the screen after long-term work, consistent linearity cannot be guaranteed. amount of deformation, so this method is also not suitable for the high requirements of modern printing systems

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