Pre-bending and press-edge combination die of inner plate and outer plate of automobile cover part and using method thereof

Abstract

The invention discloses a pre-bending and press-edge combination die of an inner plate and an outer plate of an automobile cover part. The combination die comprises an upper die base, a lower die base, a pre-bending and pressing edge covering combined mechanism, a material pressing core arranged on the upper die base and a convex die arranged on the lower die base; the pre-bending and pressing edge covering combined mechanism comprises a pre-bending pressing knife, a pre-bending pressing knife installing device and a pre-bending pressing knife driving device, the pre-bending pressing knife installation device is installed on the lower die base, and the pre-bending pressing knife driving device is installed on the upper die base, one side of the pre-bending pressing knife is connected to the pre-bending pressing knife installing device, and the other side of the pre-bending pressing knife is in contact with the pre-bending pressing knife driving device; and the pre-bending and pressingedge covering combined mechanism is used for realizing pre-bending and pressing edge wrapping of the inner plate and the outer plate under the action of the pre-bending pressing knife driving device.According to the pre-bending and press-edge combination die of the inner plate and the outer plate of the automobile cover part, the technical problem that two procedures of pre-bending and press-edgeare difficult to implement in narrow space of a door frame is solved, and meanwhile, the problem that the development cost of a set of die is increased for achieving door frame pre-bending and press-edge is reduced.

Description

technical field [0001] The invention belongs to the technical field of pressing and wrapping molds for inner and outer panels of automobiles, and in particular relates to a combined mold for pre-bending and pressing and wrapping inner and outer panels of automobile covers and a use method thereof. Background technique [0002] At present, the structure of the commonly used pressing and wrapping mold is as follows: figure 1 As shown, the hemming process is as follows: the upper die 1' goes down with the slider of the press, the pressing core 5' is driven by the upper die 1' to press the inner and outer plate assembly, the pressing core works under the action of the nitrogen spring, and pressing The machine continues to go down, and the wedge driving assembly 2' installed on the upper die 1' drives the pre-scimitar wedge assembly 3', and the pre-scimitar 4' pre-bends the outer plate flange, and the press moves further down, and the pre-scimitar is inclined The wedge assembly ...

AI Technical Summary

Problems solved by technology

However, for molds such as car door frames, where the door frame is edged, that is, the glass side is installed, it is difficult to realize it in a set of molds with the existing edge molding mold due to insufficient space.

Due to the narrow space of the door frame of the inner and outer panel pressing assembly, the conventional pre-bending and pressing and wrapping work cannot be realized. Since the pre-bending has to be retracted, the pressing knife of the upper die can press the pre-bending edge with the punch. There is no space at the door frame to provide space for the pre-scimitar seat. To realize the work here, two-sequence molds are needed to complete the pre-bending and pressing work of the door frame here, which can only be realized by pre-bending + pressing with two-sequence molds , but this method is not only costly but also has a long manufacturing cycle, and there are certain technical difficulties due to the small space

Images