Pressure-retaining injection nozzle
The utility model discloses a pressure-retaining injection nozzle, comprising a fixed nozzle body and a movable nozzle body, wherein the fixed nozzle body is internally provided with an injection runner; the movable nozzle body is sheathed on the fixed nozzle body in a sliding way; the movable nozzl...
Saved in:
Main Authors | , , |
---|---|
Format | Patent |
Language | Chinese English |
Published |
26.01.2011
|
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | The utility model discloses a pressure-retaining injection nozzle, comprising a fixed nozzle body and a movable nozzle body, wherein the fixed nozzle body is internally provided with an injection runner; the movable nozzle body is sheathed on the fixed nozzle body in a sliding way; the movable nozzle body is internally provided with a pressure-retaining chamber; the front end of the pressure-retaining chamber is communicated with the injection runner; the rear end of the pressure-retaining chamber is provided with an injection switch valve; during the injection process, the injection switch valve is opened; after the injection is finished, the injection switch valve is closed; and the movable nozzle body moves forwards and compresses the volume of the pressure-retaining chamber, thus forming the pressure-retaining effect. Therefore, the pressure-retaining chamber is compressed by utilizing the movable nozzle body to slide relatively to the fixed nozzle body so that the pressure of a plastic fusant is not redu |
---|---|
Bibliography: | Application Number: CN20102185371U |