Piston of printing ink barrel and printing ink barrel comprising same

Abstract

The invention relates to a piston of a printing ink barrel and the printing ink barrel comprising the same. The ink outlet direction of the printing ink barrel is called as the upward direction. The piston comprises a body, an upper sealing ring and a lower sealing ring, wherein the upper sealing ring and the lower sealing ring are arranged at the upper end and the lower end of the body correspondingly; the body is a cylinder with the upper end closed; the upper sealing ring is flared downwards from the upper end of the body, and an upper scraper with the thickness being decreased gradually is arranged at the tail end of the upper sealing ring; the lower sealing ring is flared downwards from the lower end of the body, and a lower scraper with the thickness being decreased gradually is arranged at the tail end of the lower sealing ring; and the diameter of the upper scraper and the diameter of the lower scraper are both in a positive allowance range of the inner diameter of the printing ink barrel. When the piston is operated, the orientations and the moving directions of the sealing rings are consistent, the problem that burrs on edges of the sealing rings are outwards turned and consequently stuck is caused is solved, the machining difficulty of the piston is lowered, and the production process cost is also lowered.

Description

technical field [0001] The invention belongs to the field of spare parts for digital integrated speed printing machine equipment, and in particular relates to a piston of an ink cartridge and an ink cartridge with the piston. Background technique [0002] In the past ten years, Japan's ideal company has used the RV series of models as the main models. share has exceeded 50%. One of the important reasons for being highly praised by Ideal Company is that this RV series ink is not easy to imitate, and compatible products often encounter incomplete pumping, which is very beneficial to protect the monopoly of the original company. [0003] The ink outlet diameter of the RV ink cartridge is only 4.8mm, while the ink outlet diameters of the GR and RN ink cartridges are 16.0mm and 19.0mm respectively. However, the power of the ink suction pump of the RV digital all-in-one speed printer is much smaller than that of the GR digital all-in-one speed printer, so the adsorption force on...

AI Technical Summary

Problems solved by technology

[0009] The present invention aims to provide a piston of an ink cartridge to solve the problem that the existing piston is easy to cause ink not to be absorbed completely

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