Trace precision injection molding glue injection device

Abstract

The invention discloses a trace precision injection molding glue injection device. The trace precision injection molding glue injection device comprises a spray nozzle, a primary glue injection gun barrel and a precision gun barrel. The primary glue injection gun barrel comprises a primary gun barrel body internally provided with a primary glue injection cavity and a primary glue injection gun barrel piston rod capable of reciprocating in the primary glue injection cavity. The precision gun barrel comprises a precision gun barrel body internally provided with a precision glue injection cavity and a precision gun barrel piston rod capable of reciprocating in the precision glue injection cavity. The internal diameter of the primary glue injection cavity is larger than that of the precision glue injection cavity. A raw material inlet passageway is communicated with the primary glue injection cavity. The primary glue injection cavity and the precision glue injection cavity are connected through a material supply passageway. A glue inflow valve is arranged on the material supply passageway. The precision glue injection cavity is connected with the spray nozzle through the glue injection passageway. A glue injection valve is arranged on the glue injection passageway. The primary glue injection gun barrel and the precision gun barrel which are different in internal diameter are combined for glue injection, material supply is easy due to the characteristics and the beneficial effects of the primary glue injection gun barrel and the precision gun barrel, the errors generated by outputting the glue amount are small, and the output precision is higher.

Description

technical field [0001] The invention is used in the technical field of injection molding, and in particular relates to a micro-quantity precision injection molding glue injection device. Background technique [0002] There are two types of barrels used in ordinary injection molding: screw barrel and direct pressure barrel. The diameter of the screw barrel is generally more than 20mm. The smaller diameter of barrel also has the problem that the barrel feed is difficult or even impossible to feed. The common direct-pressure gun barrel also has the problem of feeding difficulties, because the feeding method of the direct-pressure gun barrel is mainly to push the piston rod of the gun barrel back to feed by the glue added to the gun barrel. Contents of the invention [0003] In order to solve the above problems, the present invention provides a micro-quantity precision injection molding glue dispensing device with easy material supply, small error in output glue volume, and h...

AI Technical Summary

Problems solved by technology

[0002] There are two types of barrels used in ordinary injection molding: screw barrel and direct pressure barrel. The diameter of the screw barrel is generally more than 20mm. The diameter of the barrel is small, and there is also the problem that the barrel is difficult to feed or even impossible to feed.

The ordinary direct pressure barrel also has the problem of difficult feeding, because the feeding method of the direct pressure barrel is mainly to push the piston rod of the barrel back to feed the material.

Images