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A folding device for forming corrugations in sheet metal

A folding device, metal plate technology, applied in applications, household appliances, hollow objects, etc., can solve the problems of reducing thickness, reducing service life, damaging plates, etc.

Active Publication Date: 2022-06-17
GAZTRANSPORT & TECHNIGAZ SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These forces on the roll reduce the service life of the roll and in particular cause cracks
[0007] Furthermore, although prior art folders have auxiliary devices to assist the movement of the lower die, during corrugation, where said force is at its maximum, such folders tend to pull, especially at the end of stroke of the upper punch. Stretched metal plate
This stretch reduces the thickness of the board at the fold and risks damaging the board

Method used

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  • A folding device for forming corrugations in sheet metal
  • A folding device for forming corrugations in sheet metal
  • A folding device for forming corrugations in sheet metal

Examples

Experimental program
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Embodiment Construction

[0079] Conventionally, the "longitudinal" orientation of the folding device 9 is parallel to the axis y, ie parallel to the direction of the corrugations 2 to be formed, and the "transverse" orientation is parallel to the axis x, ie perpendicular to the direction of the corrugations 2 to be formed.

[0080] Figure 9 A corrugated metal sheet 1 is shown for forming a sealing membrane for storage tanks for cryogenic fluids, such as liquefied natural gas.

[0081] Rectangular metal plate 1 has a first series of parallel corrugations 2, called low corrugations, which extend from one edge of the plate to the other in the y direction, and a second series of parallel corrugations 3, called high corrugations, high corrugations along x The direction extends from one edge of the metal plate 1 to the other. The directions x and y of the series of corrugations are vertical. The corrugations 2, 3 protrude, for example, from the inner surface of the metal plate 1 and are designed to come ...

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Abstract

The invention relates to a folding device (9) for forming corrugations in a metal sheet for constructing a sealing membrane of a fluid storage tank, said folding device comprising: - an upper frame (10), - a lower frame (11), - a lower mold, with a first and a second mold element (14), the first and second mold elements are mounted slidingly on the lower frame (11) in the x direction, - an upper punch, - a first side clamps and a second side clamp (20), - an auxiliary device designed to assist at least one of the first and second die elements (14) in moving to the closed position, with the movement of the upper punch to the folded position Cooperating, wherein said auxiliary device is designed to move at least one of the first and second mold elements (14) according to a speed ratio that varies between the idling position and the folded position, the speed ratio being the mold element (14) at The ratio of the linear velocity in the x direction to the linear velocity of the upper punch (12) in the z direction.

Description

technical field [0001] The present invention relates to a forming device, in particular a forming device for processing thin parts, such as a folding device for forming corrugations in a metal sheet using the structure of the sealing membrane of a fluid storage tank. [0002] Such metal sheets are particularly useful in the field of storage and / or transport of sealed and insulated film tanks such as cryogenic fluids. Background technique [0003] Document WO2015170054 discloses a folding machine for forming corrugations perpendicular to the pre-formed corrugations in a metal sheet with pre-formed corrugations. The folding machine has a lower mold including a first mold element and a second mold element, each mold element having a receiving surface of a metal plate and a concave half-indent, the first mold element and the second mold element each along the x-direction Slidingly mounted on the lower frame, the x-direction is perpendicular to the direction of the corrugations ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D13/02B21D51/26
CPCB21D13/02B21D51/2669
Inventor 奥利维尔·佩罗特安东尼·德法利亚穆罕默德·萨西弗雷德里克·高斯里斯罗曼·克莱门特
Owner GAZTRANSPORT & TECHNIGAZ SA
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