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

A molding method and technology of molded products, applied in the field of molding of hollow molded products, hollow molded products and their manufacturing equipment, which can solve the problems of time-consuming melting, increased influence of heat conduction, and damage to resin quality, and achieve good control responsiveness , Miniaturization of the driving device and easy adjustment

Active Publication Date: 2009-09-23
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

[0018] 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 the mold clamping related to the present 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.

[0019] exist figure 1 In (A), at the upper position of the fixed die 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 protrudes from the parting surface P at a position below the fixed die 1 . This core ...

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Abstract

Provided is a method for manufacturing a hollow molding article, a hollow molding article and a manufacturing apparatus thereof, capable of melting the neighborhood of a combining end-face surface only instantly, molding with a higher dimensional precision, and obtaining a sufficient bond strength. By means of a movable mold (3) and a fixed mold (1), a first and a second semi-molding articles (A, B) are molded with combining end-faces (a, b), the movable mold (3) is moved under a residual state of the second semi-molding article (B) to match each combining end-face (a, b), in the interim a heater (41) formed by a halogen heater or a carbon heater is inserted to melt the combining end-face, the heater is fetched back after melting the combining end-face, the molds is closed to fuse the combining end-face.

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 manufac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D22/00B29C65/02B29C33/00
CPCB29C2045/0063B29C65/1416B29C65/1467B29C66/54B29C65/1432B29C66/301B29C65/7802B29C45/006B29C2045/0074B29C65/1419B29C69/00B29C66/1142B29C66/118B29C66/8322B29C66/73921B29C66/24244B29C66/91423B29C65/02B29D22/00
Inventor 西田正三植田祐治
Owner JAPAN STEEL WORKS LTD
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