Fast hemming mechanism for automobile sheet metal parts

Abstract

The invention relates to a rapid automobile sheet metal part edge wrapping mechanism. The defects that an existing edge wrapping machine needs to conduct edge wrapping on a sheet metal part with two steps, the work efficiency is low, and the consistence precision requirement for folded points needed for the two procedures is high, and control is not easy are overcome. After an upper edge wrappingdie and a lower edge wrapping die are folded, a workpiece profiling part is formed, the upper edge wrapping die is hinged to a base, and an upper die drive cylinder is connected between the upper edgewrapping die and the base. The lower edge wrapping die is hinged to the upper edge wrapping die and rotates along with the upper edge wrapping die. A lower die drive cylinder is connected between thelower edge wrapping die and the upper edge wrapping die. The lower edge wrapping die is hinged to the upper edge wrapping die and can rotate along with the upper edge wrapping die, independent rotation can be achieved, 90-degree overturning of an outer sheet metal part spigot can be achieved through the motion combination of the upper edge wrapping die and the lower edge wrapping die, the pre-edge-wrapping procedure is not needed, and one-time sheet metal part edge wrapping is achieved. The work efficiency is improved, precision control is convenient, and consistent folded points can be guaranteed.

Description

technical field [0001] The invention relates to a hemming mechanism, in particular to a quick hemming mechanism for automobile sheet metal parts which can complete hemming at one time. Background technique [0002] Automobiles are commonly used means of transportation, and most of the parts of the body are sheet metal parts, such as: machine cover, trunk lid, four doors, sunroof top cover, etc. Sheet metal parts will leave sharp edges after processing. In order to improve the strength and structural requirements, some parts are made of overlapping and combining two sheet metal parts. In order to ensure the safety of the parts in use, it is necessary to carry out Therefore, the existing sheet metal parts will be hemmed after stamping. [0003] At present, the existing body parts are divided into inner panels and outer panels. The inner panel and outer panel usually need two process steps in the hemming process. The first step is to stack the inner panel and the outer panel. ...

AI Technical Summary

Problems solved by technology

[0005] The invention solves the defects that the existing hemming machine needs to be divided into two steps to hem the sheet metal parts, the work efficiency is low, the consistency accuracy of the folding points required by the two processes is high, and it is difficult to control, and it provides an automobile sheet metal Fast hemming mechanism for metal parts, the upper hemming mold and the lower hemming mold are movable structures, and the lower hemming mold and the upper hemming mold are in a follow-up state, and the hemming of sheet metal parts can be completed at one time, and the precision control is convenient

[0006] The present invention also solves the defects that the existing edge wrapping machine can complete the sheet metal edge wrapping on the same pair of molds, but the final edge wrapping still needs to be pre-wrapped and the work efficiency is low, and provides an automobile sheet metal Fast hemming mechanism, the upper hemming mold and the lower hemming mold cooperate to complete the hemming at one time without pre-hemming, which improves the hemming efficiency

[0007] The present invention also solves the defect that the existing hemming machine needs to divide the hemming at different angles into several times, and cannot complete the hemming of sheet metal parts at different angles at one time, and provides a quick wrapping method for automobile sheet metal parts. The edge mechanism has multiple sets of upper and lower edge wrapping molds that do not interfere with each other, which can complete the edge wrapping of different angle positions of the sheet metal at one time without moving the sheet metal to ensure the edge wrapping accuracy

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