Car seat torsion pipe convex extrusion one-die multi-output cold extrusion die

Abstract

The invention discloses a car seat torsion pipe convex extrusion one-die multi-output cold extrusion die. The die comprises an upper die assembly, a lower die assembly, a first convex hull forming assembly and a second convex hull forming assembly, wherein the upper die assembly and the lower die assembly are matched for clamping a hollow pipe, the first convex hull forming assembly is used for forming a first convex hull on the hollow pipe so as to form a first workpiece, and the second convex hull forming assembly is used for forming a second convex hull on the first workpiece to enable thesecond convex hull and the first convex hull to clamp a connection arm so as to form a second workpiece. The car seat torsion pipe convex extrusion one-die multi-output cold extrusion die has the advantages of being good in universality, high in extrusion precision, high in positioning precision, good in operability and the like, and the production efficiency of a car seat torsion pipe can be improved.

Description

technical field [0001] The invention belongs to the technical field of moulds, and in particular, the invention relates to a cold extrusion die for extrusion of a torsion tube of a car seat. Background technique [0002] The car seat is an important internal part of the car body, mainly used to support the mass of the occupant, ease and attenuate the shock and vibration transmitted from the car body, and create comfortable and safe riding conditions for the occupant. As an important part of the car seat, the seat frame should have sufficient rigidity and strength to carry loads and ensure safety; it should also have high precision so that the human body has a suitable sitting posture, good body pressure distribution and The size and position can be adjusted to ensure stable and comfortable ride, convenient operation and good vision. The seat round tube of the car seat frame needs to be wrapped at both ends and used to connect the two connecting arms on both sides, so the si...

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Problems solved by technology

[0004] Another example is that the patent document with the authorized announcement number CN201799527U discloses a circular tube extrusion die, and its selected technical solution relates to a circular tube extrusion die that can be used for processing a convex hull. The die is mainly used for extrusion The oblique mechanism of a single convex hull is difficult to process the seat torsion tube, and the relative position accuracy of multiple convex hulls cannot be guaranteed, and the production efficiency is low, and the promotion and application value is not high

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