BENDING SYSTEM FOR FORMING CORRUPTIONS IN PART AND METHOD OF USING DEVICE Russian patent published in 2024 - IPC B21D13/02 B21D51/24 B21D11/20 

FIELD: sealing membranes.

SUBSTANCE: invention relates to the formation of a corrugation for the manufacture of a sealing membrane for a fluid storage tank. The bending system for forming a corrugation contains an upper frame and a lower frame, a punch held by the upper frame, two lower die pads held by the lower frame, two upper die pads held by the upper frame and located in the transverse direction on the respective opposite sides of the punch, and a device for deformation of a pre-formed fold line. The device for deforming a preformed fold line contains a central pin intended to be located opposite the intersection between the preformed fold line and the corrugation to be formed and held by a lower frame, and two fingers intended to deform the preformed fold line located in the transverse direction with the corresponding opposite sides of the central finger. Two fingers are mounted on a finger support, which is cinematically connected to the upper frame and to the upper die pads by a hinge mechanism.

EFFECT: corrugation is bent in corner parts having different angles.

15 cl, 15 dwg