Title:
成形システムで用いる逆止弁
Document Type and Number:
Japanese Patent JP4547001
Kind Code:
B2
Abstract:
The present invention relates to a non-return valve that can be configured for use anywhere along a molding material flow path in a molding system. The non-return valve of the present invention includes an improved means to restrict the backflow of melt therethrough during injection. In particular, a spigot-seal is configurable, during injection, between overlapping, closely-spaced, and mutually parallel complementary male and female spigot portions that are configured between complementary valve members. The spigot-seal advantageously maintains an effective backflow restriction even in the eventuality of transient movement between the spigot portions during injection. Preferably, the non-return valve of the present invention is also configured to include a means for mutually aligning and/or guiding the complementary valve components that ensures a proper alignment between the complementary spigot portions, and may also serve to improve the function and longevity of a face-seal, when present. The non-return valve of the present invention provides particularly advantageous utility when configured for use in a barrel assembly of an injection unit for the injection molding of a metal alloy.
Inventors:
Manda, Jean M.
Weir scene
Pinnet, Pierre Gene
Weir scene
Pinnet, Pierre Gene
Application Number:
JP2007506622A
Publication Date:
September 22, 2010
Filing Date:
February 21, 2005
Export Citation:
Assignee:
HUSKY INJECTION MOLDING SYSTEMS LIMITED
International Classes:
F16K15/06; B22D17/20; B28B17/00; B29C45/23; B29C45/52; F16K15/02
Domestic Patent References:
| JP2002263819A | ||||
| JP59179024U | ||||
| JP2002514136A | ||||
| JP61058955U | ||||
| JP47016574Y1 |
Foreign References:
| US6435201 | ||||
| US5401161 |
Attorney, Agent or Firm:
Okabe
Masao Okabe
Nobuaki Kato
Shinichi Usui
Takao Ochi
Seiichiro Takahashi
Koji Yoshizawa
Takao Matsui
Naoki Kimiya
Masao Okabe
Nobuaki Kato
Shinichi Usui
Takao Ochi
Seiichiro Takahashi
Koji Yoshizawa
Takao Matsui
Naoki Kimiya