Title:
MOLD FOR INJECTION MOLDING
Document Type and Number:
Japanese Patent JPS5941239
Kind Code:
A
Abstract:
PURPOSE: To obtain the titled mold that can provide an item with a low injection molding pressure without any short shot, burn mark, sink mark, etc., by supporting a gate tip in a floated manner by a spring thereby allowing the size of the gate to be varied in accordance with the injection pressure of the resin.
CONSTITUTION: A melted resin is injection molded into cavities 1, 2 through a sprue 3, runners 4 and thin film gates 5. In the mold for said injection molding, the thin film gate 5 comprises a stationary gate 9 and the gate tip 6 housed slidably in a retaining chamber 8 through a spring 7.
More Like This:
Inventors:
IDATE HIDENORI
ISHIKAWA MASAHARU
IWAMI SHIGEO
ISHIKAWA MASAHARU
IWAMI SHIGEO
Application Number:
JP15198282A
Publication Date:
March 07, 1984
Filing Date:
August 31, 1982
Export Citation:
Assignee:
MATSUSHITA ELECTRIC WORKS LTD
International Classes:
B29C41/00; B29C45/00; B29C45/26; B29C45/27; B29C45/77; (IPC1-7): B29F1/022
Attorney, Agent or Firm:
Toshimaru Takemoto