Stop mechanism of car back door fastening mould

Abstract

The invention relates to a stop mechanism of a car back door fastening mould. The stop mechanism comprises a base, a lug seat, 7-shaped main rotating arms, a stop plate and an auxiliary rotating arm, the base and the lug seat are arranged on a lower mould of the car back door fastening mould, the lower ends of the main rotating arms are hinged to the base through a rotating shaft, the stop plate is connected with the upper ends of the main rotating arms, one end of the auxiliary rotating arm is connected with the lower portions of the main rotating arms while the other end of the auxiliary rotating arm is hinged to a piston rod head of an air cylinder, the tail end of the air cylinder is hinged to the lug seat, and the auxiliary rotating arm can rotate around the rotating shaft together with the main rotating arms. The stop mechanism of the car back door fastening mould is large in stop length, good in stability and capable of achieving automation control.

Description

technical field [0001] The invention relates to an automobile mold tooling, in particular to a material retaining mechanism for an automobile back door fastening mold. Background technique [0002] Automobile panels are important components of automobiles. Compared with ordinary stamping parts, they have the characteristics of thin materials, complex shapes, large structural dimensions and high surface quality requirements, especially the inner and outer panels of automobile doors. [0003] The traditional automobile back door buckle clamping mold often uses an elastic stopper mechanism to realize the adjustment and positioning of the sheet metal, so as to achieve the dimensional accuracy and the accuracy of the shape structure after stamping. As disclosed in CN 201353625Y, "an elastic side retainer assembly" is composed of a retaining pin, a fixed seat, a fixed plate, and a pin. Fixing, there is a groove in the retaining pin, and an elastic element is arranged in the groov...

AI Technical Summary

Problems solved by technology

[0004] However, this type of elastic stopper mechanism has the following problems due to its own structural characteristics: 1) The pop-up height is relatively large, and the guide sliding surface is relatively small, and the spring structure makes the movement of the mechanism unstable; 2) The stopper pin or the stopper plate The length of the retaining material is small, and because there are many pre-bending mechanisms used in the mold closing of the back door buckle, the elastic retaining mechanism does not have enough design space to effectively ensure its retaining function

Therefore, in the actual production process, the material stopper mechanism often loosens, shifts, shakes, etc., resulting in problems such as production stoppage, unstable part quality, and scrapping of the fastening assembly.

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