Double-component dispensing valve

Abstract

The invention provides a double-component dispensing valve, sequentially composed of a cylinder shell, a piston rod, a valve core, a U-shaped block, a glue feed valve body and a glue discharge valve body which are connected; the piston rod vertically penetrates through the upper half part of the cylinder shell; the valve core comprises a first valve core and a second valve core the same as the first valve core, wherein the first valve core and the second valve core are connected to the lower end of the piston rod and are eudipleural along the piston rod, and the first valve core and the second valve core respectively penetrate through the U-shaped block, the glue feed valve body and the glue discharge valve body in sequence; a groove is formed in a connecting site of the U-shaped block and the cylinder shell. The double-component dispensing valve provided by the invention has the beneficial effects of effectively discharging gas leaked from the cylinder to prevent the gas from entering the glue feed valve body; in addition, the gas in glue in the glue feed valve body can be discharged from the groove of the U-shaped block by extrusion when the valve cores move downwards, so that a cylinder is protected and the phenomenon that the glue contains bubbles in a glue discharge process of the dispensing valve is eliminated.

Description

technical field [0001] The invention relates to a dispensing valve, in particular to a dispensing valve for automatically mixing two-component glue. Background technique [0002] Dispensing valves are generally divided into two types: pneumatic and electric. When the pneumatic dispensing valve is working, compressed air is sent into the glue bottle, and the glue is pressed into the feed pipe connected to the piston chamber. When the piston is on the upstroke, the piston chamber is filled with glue, and when the piston pushes down to drop glue When the needle is pressed, the glue is pressed out from the needle mouth. The amount of glue dripped is determined by the distance of the piston downstroke, which can be adjusted manually or controlled in the software. The glue closing of the pneumatic dispensing valve adopts the upward suction glue closing structure, so that the glue can be sucked back and cut off instantly at the same time, reducing the Residual glue on the needle ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to propose a two-component dispensing valve capable of discharging the gas in the glue, which solves the problem that the gas leaked from the cylinder enters the glue inlet valve body in the prior art, thereby affecting the dispensing quality and the glue inlet valve. The problem that the gas in the glue cannot be discharged

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