Apparatus and method for manufacturing pipe

Patent metadata

Field	Value
Publication number	US-12539654-B2
Application number	US-202318191961-A
Country	US
Kind code	B2
Filing date	Mar 29, 2023
Priority date	Dec 28, 2022
Publication date	Feb 3, 2026
Grant date	Feb 3, 2026

Abstract

An apparatus for manufacturing a pipe includes a mold portion having an inner surface corresponding to an outer shape of the pipe, and a core portion having an outer surface corresponding to an inner shape of the pipe, wherein the mold portion includes an upper mold, a plurality of side molds, and a lower mold, and the core portion includes a plurality of corner cores corresponding to an inner corner of the pipe, and a plurality of side cores disposed between the plurality of corner cores and corresponding to an inner side surface of the pipe, wherein the lower mold is supported to move the plurality of side molds, is installed to slide the plurality of side cores, and is configured to move in a first direction to move the plurality of side molds and the plurality of side cores in a second direction, perpendicular to the first direction.

First claim

What is claimed is:

1 . An apparatus for manufacturing a pipe, comprising: a mold portion having an inner surface corresponding to an outer shape of the pipe, a core portion having an outer surface corresponding to an inner shape of the pipe, and a base member spaced apart from the mold portion and the core portion in a first direction, wherein the mold portion includes an upper mold, a plurality of side molds, and a lower mold, the core portion includes a plurality of corner cores corresponding to inner corners of the pipe, and a plurality of side cores disposed between the plurality of corner cores and corresponding to inner side surfaces of the pipe, wherein each of the plurality of side cores includes a side head corresponding to one of the inner side surfaces of the pipe, and a head extension bar extending from the side head in the first direction and hinged to the base member to rotate and move in a second direction, and wherein the lower mold comprises a support configured to move in the first direction and move the plurality of side molds and the plurality of side cores in the second direction, perpendicular to the first direction, a support mold installed on the support, and having a plurality of through holes through which a plurality of the head extension bars of the plurality of side cores pass and slide, and a core support member installed on the support mold and supporting inner side surfaces of the plurality of side cores.

2 . The apparatus of claim 1 , wherein the plurality of through-holes are formed to be inclined inwardly toward the upper mold.

3 . The apparatus of claim 1 , wherein the side head of each of the plurality of side cores is formed to be thicker toward the upper mold.

4 . The apparatus of claim 1 , wherein the core support member is formed to be tapered toward the upper mold.

5 . The apparatus of claim 1 , wherein a guide rail is installed on the support, and a guide groove corresponding to the guide rail is formed on each of the plurality of side molds to slide each of the plurality of side molds along the guide rail.

6 . An apparatus for manufacturing a pipe, comprising; a mold portion having an inner surface corresponding to an outer shape of the pipe, a core portion having an outer surface corresponding to an inner shape of the pipe, a base member spaced apart from the mold portion and the core portion in a first direction, and a roof member moving in the first direction and having the upper mold installed thereon, wherein the mold portion includes an upper mold, a plurality of side molds, and a lower mold, the core portion includes a plurality of corner cores corresponding to inner corners of the pipe, and a plurality of side cores disposed between the plurality of corner cores and corresponding to inner side surfaces of the pipe, wherein each of the plurality of side cores includes a side head corresponding to one of the inner side surfaces of the pipe, and a head extension bar extending from the side head in the first direction and hinged to the base member to rotate and move in a second direction, wherein the lower mold comprises a support configured to move in the first direction and move the plurality of side molds and the plurality of side cores in the second direction, perpendicular to the first direction, wherein a plurality of inclined bars inclined outwardly toward the plurality of side molds are formed on the roof member, a plurality of inclined holes through which the plurality of inclined bars pass and slide, are formed on each of the plurality of side molds, and the plurality of inclined holes are formed to be inclined to correspond to the plurality of inclined bars.

7 . The apparatus of claim 1 , wherein each of the plurality of corner cores comprises:
a corner head corresponding to one of the inner corners of the pipe; and a head pillar detachably installed on the corner head in the first direction and fixed to the base member.

8 . The apparatus of claim 1 , wherein a mold corrugation surface is formed on the plurality of side molds to correspond to a corrugation of the pipe, and a core corrugation surface is formed on the plurality of corner cores and the plurality of side cores, respectively.

9 . An apparatus for manufacturing a pipe, comprising:
an upper mold, a side mold, and a lower mold, having an inner surface corresponding to an outer shape of the pipe, a plurality of corner cores corresponding to inner corners of the pipe, a plurality of side cores disposed between the plurality of corner cores and corresponding to inner side surfaces of the pipe, and a base member spaced apart from the lower mold in a first direction, wherein each of the plurality of side cores includes a side head corresponding to one of the inner side surfaces of the pipe, and a head extension bar extending from the side head in the first direction and hinged to the base member, the lower mold includes a support installed to move in the first direction and to move the side mold in a second direction, perpendicular to the first direction, a support mold installed on the support, and having a plurality of through-holes through which a plurality of the head extension bar of the plurality of side cores pass and slide, and a core support member installed on the support mold and slidably supporting inner side surfaces of the plurality of side cores, wherein the plurality of through-holes are formed to be inclined inwardly toward the upper mold, and a portion of the side head of the side core is formed to be thicker toward the upper mold.

10 . The apparatus of claim 9 , wherein the core support member is formed to be tapered toward the upper mold.

11 . The apparatus of claim 9 , wherein a guide rail is installed on the support, and a guide groove corresponding to the guide rail is formed on the side mold to slide the side mold along the guide rail.

12 . The apparatus of claim 9 , further comprising a roof member moving in the first direction and having the upper mold installed thereon,
wherein a plurality of inclined bars inclined outwardly toward the side mold are formed on the roof member, a plurality of inclined holes through which the plurality of inclined bars pass and slide, are formed on the side mold, and the plurality of inclined holes are formed to be inclined to correspond to the plurality of inclined bars.

13 . The apparatus of claim 9 , wherein each of the plurality of corner cores comprises:
a corner head corresponding to one of the inner corners of the pipe; and a head pillar detachably installed on the corner head in the first direction and fixed to the base member.

14 . The apparatus of claim 9 , wherein a mold corrugation surface is formed on the side mold to correspond to a corrugation of the pipe, and a core corrugation surface is formed on the plurality of corner cores and the plurality of side cores, respectively.

Assignees

• Semes Co Ltd

Inventors

• Park Chul Jin

Classifications

• B29L2023/22

  Tubes or pipes, i.e. rigid (bent tubes not for use as pipe couplings B29L2023/004) · CPC title

• B29C45/2673

  with exchangeable mould parts, e.g. cassette moulds (B29C45/1756 takes precedence) · CPC title

• B29C45/261 Primary

  having tubular mould cavities · CPC title

• B29L2023/18

  Pleated {or corrugated} hoses · CPC title

• B29L2016/00

  Articles with corrugations or pleats (B29L2023/18, {B29L2024/003} take precedence) · CPC title