Title:
SYNTHETIC RESIN PIPE MANUFACTURING APPARATUS
Document Type and Number:
WIPO Patent Application WO/2022/225129
Kind Code:
A1
Abstract:
The present invention relates to a synthetic resin pipe manufacturing apparatus comprising: an extruder for extruding a synthetic resin pipe through a cavity formation portion, while slowly rotating a resin supplied from a raw material supply device, so that a hollow portion is formed in a spiral shape in the longitudinal direction; an air fitting which is formed, in a cylindrical shape having the same inner diameter as the synthetic resin pipe, in front of an air supply pipe formed inside the extruder in order to support the inner surface of the synthetic resin pipe that is extruded from the extruder and flows into a cooler of a dice; an air ejection pipe which has a plurality of air holes formed in front of the air fitting so as to cool the inner surface of the synthetic resin pipe; an air discharge plate which is provided in front of the air ejection pipe and in which a plurality of air discharge holes are perforated in a disc to allow hot air, generated as air ejected through the air holes cools the inner surface of the synthetic resin pipe, to be discharged to the outside; an air supply pipe which is provided behind the air fitting and in which a plurality of air holes are perforated so that air can be discharged to cool the hollow portion of the synthetic resin pipe in which the hollow portion is formed as the synthetic resin pipe is extruded in the extruder; and a rotation driving means for transmitting rotation power to the air supply pipe. The air supply pipe and the air fitting, the air ejection pipe, and the air discharge pipe integrally formed therewith are rotated together by the rotation driving means, thus making it possible to manufacture a high-quality synthetic resin pipe having excellent durability.
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Inventors:
PARK SOON SAE (KR)
Application Number:
PCT/KR2021/018848
Publication Date:
October 27, 2022
Filing Date:
December 13, 2021
Export Citation:
Assignee:
PARK SOON SAE (KR)
International Classes:
B29C48/09; B29C35/16; B29C48/32; B29C48/88; B29C48/89; B29C48/92; B29D23/00
Domestic Patent References:
| WO2020099684A1 | 2020-05-22 |
Foreign References:
| KR101435861B1 | 2014-11-10 | |||
| KR20190119694A | 2019-10-23 | |||
| KR200432460Y1 | 2006-12-04 | |||
| KR200286003Y1 | 2002-08-22 | |||
| KR102296521B1 | 2021-09-10 |
Attorney, Agent or Firm:
CHU, Hyuk (KR)
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