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Centrifugal mold and method for manufacturing hollow cylindrical body

A technology of centrifugal molding and manufacturing method, which is applied to objects with hollow walls, household appliances, other household appliances, etc., can solve the problems of defective products and residues, and achieve the effect of preventing defective products.

Active Publication Date: 2019-03-15
미쓰비시케미칼어드밴스드머티리얼즈주식회사
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the burr 1b is broken from the root during demolding, the burr 1b will remain in the centrifugal molding die 10, and defective products may be produced in the next centrifugal molding process.

Method used

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  • Centrifugal mold and method for manufacturing hollow cylindrical body
  • Centrifugal mold and method for manufacturing hollow cylindrical body
  • Centrifugal mold and method for manufacturing hollow cylindrical body

Examples

Experimental program
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Embodiment Construction

[0037] Embodiments will be described below with reference to the drawings. figure 1 ,2a , 2b show the first embodiment, figure 1 Centrifugal molding die 10A is shown, Figure 2a , 2b The cylindrical body 2 centrifugally molded using this centrifugal molding die 10A is shown.

[0038] In the centrifugal molding die 10A of this embodiment, the cover 12A is integrated with the inner cover 42A. The inner cover 42A is ratio Figure 4 The inner cover 42 of the centrifugal molding die 10 has a small-diameter conical shape, and the outer peripheral edge 42e of the inner cover 42A is separated from the inner peripheral surface 31 of the mold main body 11 by a predetermined distance L.

[0039] figure 1 The shown r1 represents the shortest distance from the rotation axis to the outer peripheral edge 42e (outer peripheral edge of the convex portion on the inner surface of the closure member), and r2 represents the shortest distance from the rotation axis to the inner peripheral ed...

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PUM

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Abstract

Provided are: a centrifugal mold wherein, even if burrs are formed on an outer peripheral edge of an end surface of a hollow cylindrical body, there is high bonding strength between the burrs and thehollow cylindrical body such that when the hollow cylindrical body is demolded, the burrs are taken out together with the hollow cylindrical body from the centrifugal mold; and a method for manufacturing a hollow cylindrical body. An inner surface of a lid 12A of a centrifugal mold 10A is provided with a conical inner lid 42A. An outer peripheral edge 42e of the inner lid 42A is separated from aninner peripheral surface 31 of a mold body 11 by a predetermined distance L. An end surface 2a of a molded cylindrical body 2 is formed from: a first end surface 2d comprising a tapered surface; and asecond end surface 2e substantially perpendicular to the axial direction.

Description

technical field [0001] The present invention relates to a centrifugal molding die. Specifically, it relates to a centrifugal molding die comprising: a tubular mold main body for forming a hollow cylindrical body; and closing members detachably provided at both ends of the mold main body. . Moreover, this invention relates to the manufacturing method of the hollow cylindrical body using this centrifugal molding die. Background technique [0002] As a method of molding a hollow cylindrical body made of resin, there is known a centrifugal molding method in which a raw material resin is injected into a centrifugal molding mold composed of a tubular mold body and a cover that closes the opening of the mold body, and the mold body is made to The mold is rotated around the axis to cure the raw resin (for example, refer to Patent Document 1). [0003] Figure 4 The centrifugal molding die described in Patent Document 1 is shown. The centrifugal molding die 10 has a tubular die bo...

Claims

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Application Information

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IPC IPC(8): B29C41/40B29C41/04B29L23/00B29L24/00
CPCB29C41/04B29C41/40B29C41/36
Inventor 渡边达哉
Owner 미쓰비시케미칼어드밴스드머티리얼즈주식회사