Molding equipment for controlling cross-section deformation of glass guide groove of automobile

Abstract

The invention discloses molding equipment for controlling the cross section deformation of a glass guide groove of an automobile. A form-following material pressing device is added on one side of the periphery of a fixed profile die; a gear of the axis of rotation of a rotary plate is meshed with racks; the rotary plate can be deflected around the axis of the fixed profile die; the outer side of the rotary plate is fixedly provided with an oil cylinder; the front end of a piston rod of the oil cylinder is fixedly provided with a movable profile die; the movable profile die can slide back and forth on the rotary plate; and a workpiece butts against the periphery of the fixed profile die when operated. According to the molding equipment, the form-follow material pressing device is added on the basis of the conventional die, the bending speed and the material pressing force are controlled by a programmable logic controller (PLC), and continuous pressing force is applied to the place of a deformation material when the horizontal planes of products are subjected to round bending, so that the problems of deformation and depression of the material can be favorably solved, the deformation D of the size of a machined guide groove piece at the depression is less than 1mm according to actual machining tests, and the requirements of assembled glazing tapes and sealing of automobile bodies can be completely met.

Description

technical field [0001] The invention relates to the technical field of stamping sheet metal, in particular to a forming device for controlling the cross-sectional deformation of an automobile glass run channel. Background technique [0002] like figure 1 The automotive glass run channel part 1 shown is usually formed by bending a galvanized sheet with a thickness of about 0.7 mm. Due to the requirements of the exterior design of the vehicle body, a relatively small curvature radius R is required for transition in some parts, as shown in figure 1 As shown in part C, generally R<120mm. In the prior art, the stretch bending process is adopted, and the cross-section is made by using the sliders on both sides of the workpiece, such as figure 2 The strip shown is bent into a three-dimensional shape by means of a circular fixed profile. This molding method has the defect of local section deformation at the small curvature transition radius, which is manifested as figure 2 ...

AI Technical Summary

Problems solved by technology

This molding method has the defect of local section deformation at the small curvature transition radius, which is manifested as figure 2 Dimension B in cannot be guaranteed to be within the tolerance range of ±1mm, after actual bending, such as image 3 As shown, the dimensional deformation D of the depression 2 is often 2.5mm smaller than the theoretical size, which is not conducive to the installation of glass sealing strips, and ultimately affects the sealing effect of the vehicle body

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