Dispensing valve

Abstract

The invention discloses a dispensing valve. The dispensing valve comprises a stroke fine tuning rotary knob, an adjusting rod, an adjusting rod fixing base, a plunger rod, a piston, a hollow cylinder body and an adhesive storing body. Accurate dispensing is conducted by controlling the air pressure; in addition, the dispensing quantity can be controlled through the coordinating function between the external stroke fine tuning rotary knob and the adjusting rod; the whole dispensing valve does not need to be disassembled; using is simple and easy; and the service life is long.

Description

technical field [0001] The invention relates to the technical field of dispensing equipment, in particular to a dispensing valve. Background technique [0002] With the improvement of automation in the field of dispensing, the demand for dispensing accuracy is also gradually increasing, and the contradiction between dispensing efficiency and dispensing accuracy is also prominent. In the existing dispensing valve mechanism, the piston generally relies on The push and compression of the elastic element (such as a spring) realizes sliding up and down. While the elastic element slides, the elastic diaphragm deforms to transport the external glue into the glue storage chamber, and at the same time further drives the dispensing plug to slide up and down quickly to reach the start point. / Close the purpose of dispensing. In this dispensing valve, the amount of dispensing is determined by the deformation of the elastic diaphragm. The upper and lower ends of the elastic diaphragm nee...

AI Technical Summary

Problems solved by technology

[0002] With the improvement of automation in the field of dispensing, the demand for dispensing accuracy is also gradually increasing, and the contradiction between dispensing efficiency and dispensing accuracy is also prominent. In the existing dispensing valve mechanism, the piston generally relies on The push and compression of the elastic element (such as a spring) realizes sliding up and down. While the elastic element slides, the elastic diaphragm deforms to transport the external glue into the glue storage chamber, and at the same time further drives the dispensing plug to slide up and down quickly to reach the start point. / Close the purpose of dispensing. In this dispensing valve, the amount of dispensing is determined by the deformation of the elastic diaphragm. The upper and lower ends of the elastic diaphragm need a temporary storage structure for external glue, which is bound to affect the sealing performance of the dispensing valve. The requirements are more stringent, the equipment is more vulnerable to damage, and the life of the equipment is shorter

[0003] Secondly, during the working process of the dispensing valve, it is impossible to fine-tune directly from the outside of the motor valve body. When changing the dispensing amount, it is usually to disassemble the dispensing valve as a whole, adjust its internal structure, and then reassemble it. Moreover, the problem of poor sealing often occurs during the assembly process, and the work efficiency is extremely low.

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