JPH02142018U

JPH02142018U -

Info

Publication number: JPH02142018U
Application number: JP1989051553U
Authority: JP
Priority date: 1989-04-28
Filing date: 1989-04-28
Publication date: 1990-11-30

Description

[Brief explanation of drawings]

第１図は本考案の一実施例であるクロスヘツド
装置の要部断面図であり、第２図は第１図の真空
室の要部切欠斜視図である。第３図及び第４図は
夫々従来のクロスヘツド装置の不具合の説明図で
ある。１０……クロスヘツド装置、１４……通路、１
６……補強糸、１８……内面ゴム層、３１……外
面ゴム層、３２……真空室、３４……吸引口、３
６……ポンプ。 FIG. 1 is a sectional view of a main part of a crosshead device which is an embodiment of the present invention, and FIG. 2 is a cutaway perspective view of a main part of the vacuum chamber shown in FIG. FIGS. 3 and 4 are explanatory diagrams of defects in conventional crosshead devices, respectively. 10...Crosshead device, 14...Passway, 1
6...Reinforcement thread, 18...Inner surface rubber layer, 31...Outer surface rubber layer, 32...Vacuum chamber, 34...Suction port, 3
6...Pump.

Claims

[Claims for Utility Model Registration] The hose has a passage through which the inner layer passes and a suction port communicating with the passage, and the inner layer is passed through while vacuum suction is applied to the inside of the passage through the suction opening. In a crosshead device of an extruder for extruding an outer layer covering the inner layer, a part of the inner surface of the passage is recessed in a direction away from the surface of the inner layer to form a vacuum chamber, and the suction port is connected to the vacuum chamber. 1. A crosshead device for an extruder, characterized in that the crosshead device is opened to a chamber and the inside of the passage is vacuum-suctioned through the vacuum chamber.