Progressive die for manufacturing automobile seat hinge and method of progressive die

Abstract

The invention relates to a progressive die for manufacturing an automobile seat hinge and a method of the progressive die. The progressive die for manufacturing the automobile seat hinge is structurally characterized in that according to the progressive die, a trimming die, a pre-forming die, a pre-folding die, a folding die, a pre-bending die, a pre-rolling die, a rolling shaping die and a hole flanging forming die are sequentially arranged, wherein upper dies of the trimming die, the pre-forming die, the pre-folding die, the folding die, the pre-bending die, the pre-rolling die, the rolling shaping die and the hole flanging forming die are the same die seats, and lower dies of the trimming die, the pre-forming die, the pre-folding die, the folding die, the pre-bending die, the pre-rolling die, the rolling shaping die and the hole flanging forming die are the same die seats. The manufacturing method of the progressive die includes the steps that two asymmetric hinges which are connected integrally before final cutting need to be manufactured; the center line of a flanged hole of the first hinge and the center line of a flange hole of the second hinge are distributed in a staggered mode; the first hinge and the second hinge are finally formed through the progressive die which is designed in advance. The manufacturing method includes a trimming process, a pre-forming process, a rolling process and a hole flanging process. According to the progressive die and the preparing method of the progressive die, the overall design and arrangement are more reasonable and more simple, use is convenient and reliable, positioning is accurate, precision is high, two finished hinge products different in shape can be produced through one die, the cost of the progressive die and a steel plate coiled tape is lower, and efficiency is higher.

Description

technical field [0001] The invention relates to a continuous mold for making automobile seat hinges and a method thereof, which is specially used for continuously processing two inner lower hinge parts with different shapes in the automobile seat. Background technique [0002] In the prior art, continuous molds are used by many manufacturers because of their high efficiency and good stability in making products. Although the continuous mold seems similar, its structure must be fully designed according to the structure of the specific product. Typically, two parts of different shapes are produced separately by continuous molding. [0003] Chinese patent application number 2014100342526 discloses an invention patent application named "forming process of car seat connecting plate", which includes punching-empty step-empty step-empty step-side angle-punching-empty step- Half shearing-empty step-empty step-empty step-blanking-cutting, and also discloses structures such as upper...

AI Technical Summary

Problems solved by technology

However, the structures and techniques of the above-mentioned patent applications are not suitable for the production of the inner lower hinge of the car seat, and at the same time, they cannot be simply combined to be suitable for the production of the lower hinge of the inner side of the car seat.

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