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Title: INJECTION-MOLDING APPARATUS

Abstract

This patent is drawn to an injection molding apparatus for producing a tube closed at one end wherein the normally unsupported end of the core located in the cavity during the injection of the molten material to fill the space between the core and cavity wall, which supporting means is automatically removed from operation during the forming of the closed end of the tube. This support means is a plug extending through the end of the core into a recess in the bottom of the cavity where the closed end of the tube is to be formed. The plug is spring pressed into said recess and is forced out of the recess by a slidable bushing at the top of the cavity which is moved against the force of the spring by the molten material when it fills the uppormost open end portion of the cavity, thereby permitting the closed end of the tube to be formed.

Inventors:
Issue Date:
OSTI Identifier:
4343399
Patent Number(s):
2822578
Assignee:
U.S. Atomic Energy Commission
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29L - INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
B - PERFORMING OPERATIONS B29 - WORKING OF PLASTICS B29C - SHAPING OR JOINING OF PLASTICS
NSA Number:
NSA-12-010266
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-58
Country of Publication:
United States
Language:
English
Subject:
PATENTS; CONFIGURATION; INJECTION; LIQUID METALS; PATENT; PRESSURE; TUBES; ZONES

Citation Formats

Lobell, G M. INJECTION-MOLDING APPARATUS. United States: N. p., 1958. Web.
Lobell, G M. INJECTION-MOLDING APPARATUS. United States.
Lobell, G M. Tue . "INJECTION-MOLDING APPARATUS". United States.
@article{osti_4343399,
title = {INJECTION-MOLDING APPARATUS},
author = {Lobell, G M},
abstractNote = {This patent is drawn to an injection molding apparatus for producing a tube closed at one end wherein the normally unsupported end of the core located in the cavity during the injection of the molten material to fill the space between the core and cavity wall, which supporting means is automatically removed from operation during the forming of the closed end of the tube. This support means is a plug extending through the end of the core into a recess in the bottom of the cavity where the closed end of the tube is to be formed. The plug is spring pressed into said recess and is forced out of the recess by a slidable bushing at the top of the cavity which is moved against the force of the spring by the molten material when it fills the uppormost open end portion of the cavity, thereby permitting the closed end of the tube to be formed.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1958},
month = {2}
}