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Method for molding hollow molding article, hollow molding article and manufacturing apparatus thereof

A technology for manufacturing equipment and molding methods, which is applied to the molding of hollow molded products, hollow molded products and their manufacturing equipment, and can solve the problems of time-consuming melting, damage to resin quality, and greater influence of heat conduction, etc., and achieve good control responsiveness , easy adjustment, miniaturization of the driving device

Active Publication Date: 2014-03-19
JAPAN STEEL WORKS LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Also, melting takes time, so the resin is heated for a long time and the quality may suffer
Furthermore, the influence of heat conduction also becomes larger
That is, when the heating time is long, the air around the heating body is also heated, and the heated air heats the resin in a wide range, so there is a problem that the quality of the resin is further deteriorated.

Method used

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  • Method for molding hollow molding article, hollow molding article and manufacturing apparatus thereof
  • Method for molding hollow molding article, hollow molding article and manufacturing apparatus thereof
  • Method for molding hollow molding article, hollow molding article and manufacturing apparatus thereof

Examples

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Embodiment Construction

[0022] The manufacturing apparatus of a hollow molded product according to this embodiment is composed of a mold and a heating device. First, the mold according to this embodiment will be described. figure 1 (A) shows the state of mold closing of the mold related to this embodiment, and the mold roughly includes: a fixed mold 1; a movable mold 2 that opens and closes relative to the fixed mold; A movable mold 3 driven to slide up and down in the center; and a driving device for driving the movable mold 3, for example, constituted by a piston cylinder unit 4, and the like.

[0023] exist figure 1 In (A), at a position above the fixed mold 1 , a recess 11 of a predetermined size drawn inward from the parting surface P is formed. The concave portion 11 is used to shape the outer surface of the first semi-molded product A as described below. exist figure 1 In (A), a hemispherical core 12 is protrudingly provided from the parting surface P at a position below the fixed die 1 . ...

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Abstract

A method of molding a hollow molded article, a hollow molded article, and an apparatus for manufacturing the same are provided to secure high molding accuracy and sufficient adhesion strength by using a contact-section of a pair of half-molded products through molding pressure. A method of molding a hollow molded article comprises the steps of: molding first and second half-molded products with moving mold(3) and fixed mold(1) to have a contact intersection plane; allowing the moving mold to slide in a state that the second half-molded product exists; matching each contact intersection plane; inserting a heater(41) between the contact intersections, wherein the heater is made of a halogen heater or a carbon heater; separating the heater after molding the contact intersection plane by the heater; and fusing the intersection planes by closing the moving and fixed molds.

Description

technical field [0001] The present invention relates to a molding method of a hollow molded product, a hollow molded product obtained by carrying out the molding method, and a manufacturing device thereof, wherein, in one molding, a movable mold and a fixed mold that can be closed are used to make a pair of The half-molded product is integrally molded with joint end faces, and in a state where one half-molded product remains on the fixed die and the other half-molded product remains on the movable die, the movable die is moved relative to the fixed die, and the paired The semi-formed products face each other with the joint end faces separated, insert a heating body between them, melt the joint end faces, retract the above-mentioned heating body, close the mold, fuse the joint end faces, and obtain hollow molding from the paired semi-formed products Taste. Background technique [0002] A molding method using an injection molding machine is known as one of methods for manufa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29D22/00B29C65/02B29C33/00
CPCB29C69/00B29C66/1142B29C2045/0063B29C65/7802B29C66/54B29C65/1432B29C66/301B29C66/118B29C65/1419B29C45/006B29C2045/0074B29C65/1467B29C65/1416B29C66/8322B29C66/73921B29C66/24244B29C66/91423B29C65/02B29D22/00
Inventor 西田正三植田祐治
Owner JAPAN STEEL WORKS LTD
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