Printing ink scraping apparatus in screen printer with automatic dish

Abstract

The invention provides a printing ink scrapping device in an automatic round screen printer which belongs to the technical field of machinery. The invention solves the problem of high cost caused by large wasting of the printing ink which needs replacing after being dry in the printing ink scrapping device of the existing automatic round screen printer. The printing ink scrapping device in the automatic round screen printer includes a screen printing halftone which can move on a frame horizontally; two groups of scraper components are arranged along the vertical direction above the middle of the screen printing halftone; the lower end of each group of scraper component is provided with a sheet scraper; besides, the two scrapers are arranged in parallel to each other; two air cylinders are arranged on the frame; each air cylinder is provided with a solenoid pilot actuated valve for controlling the air cylinder to move up and down; the solenoid pilot actuated valves are connected on a control circuit; when the scraper components move downwards under the driving of the corresponding air cylinders thereof, the scrapers at the lower end of the scraper components are led to be pressed on the screen printing halftone. The printing ink scrapping device in the automatic round screen printer of the invention has the advantages of saving printing ink, being convenient to be maintained and high utilization rate of the printing ink.

Description

technical field [0001] The invention belongs to the technical field of machinery, and relates to an ink scraping device, in particular to an ink scraping device in an automatic circular screen printing machine. Background technique [0002] The round surface screen printing machine has a very wide range of applications, and can print items with cylindrical surfaces and cylindrical surfaces. The screen printing machine adopts screen printing, the screen includes penetrating grid and non-penetrating grid, the workpiece is placed on the workbench under the screen, the ink is applied to the grid of the screen, and then the screen is pressed against the workpiece Then use a scraper to smear the ink back and forth on the grid pattern of the screen, and the ink passes through the grid of the screen to print the graphics on the workpiece. [0003] Existing circular screen printing machines have single-sided scrapers for moving ink back and forth on the screen, and are not easy to f...

AI Technical Summary

Problems solved by technology

[0003] Existing circular screen printing machines move the ink back and forth on the screen with one-sided scrapers, and are not easy to fix, and sometimes there will be abnormal movements during the scraping process.

The moving stroke of the unilateral scraper relative to the screen printing screen is large, and the scraper scrapes the ink to the edge of the screen printing screen, because the ink on the edge will dry and agglomerate quickly, and the small pieces of ink brought back to the middle will be serious It affects the flow of ink in the middle, and the carrier of screen printing is not well-inked until the end of use

After the ink is dry, the ink needs to be replaced, resulting in a great waste of ink, resulting in an increase in cost

Only in the case of a large amount of ink supply can the sharp scale line be drawn occasionally, otherwise the printing quality will be poor

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