Mould for forming side push bending beam for passenger train

Abstract

The invention provides a mould for forming a side push bending beam for a passenger train. The mould comprises an upper mould and a lower mould arranged up and down. The upper mould can move relative to the lower mould. A lower limiting block is fixedly arranged on the lower mould, and a pressure plate is sleeved on the lower limiting block. A second concave arc-shaped face is formed on a top face of the lower limiting block, the bottom face of the upper mould is a first convex arc-shaped face, and a first concave arc-shaped face attached to the bottom face of the upper mould is formed on the top face of the pressure plate. A groove corresponding to the lower limiting block is formed on the bottom face of the upper mould. The groove is internally provided with an upper limiting block. The bottom face of the upper limiting block is a second convex arc-shaped face matched with the second convex concave arc-shaped face. The pressure plate under the effect of a limiting drive device is positioned on a first work position under the effect of a limiting drive device, and the upper mould moves downward to the pressure plate and is attached to the top face of the pressure plate so as to drive the pressure plate to move downward relative to the lower positioning block so that the lower limiting block enters into the groove. According to the mould, formed rebound deformation can be effectively reduced and the forming quality is improved through the arrangement of the moveable pressure plate.

Description

technical field [0001] The invention relates to the manufacturing technology of railway vehicles, in particular to a mold for forming a curved beam at the side roof of a railway passenger vehicle. Background technique [0002] The curved beam on the side roof of a railway passenger car is an important component of the roof of a railway passenger car, and its molding quality directly affects the subsequent assembly of the roof. figure 1 is the front view of the curved beam on the side roof of the railway passenger car; figure 2 for figure 1 Middle A-A direction view; such as figure 1 and figure 2 As shown, the curved beam at the top of the side is arc-shaped as a whole, and the cross-section is "hat-shaped", that is, from the perspective of a cross-section, the two sides of the opening of the "hat-shaped" extend outward to form airfoils 11, and The arc surface on the side where the curved beam airfoil 11 is located is an outer arc surface 101 with a larger bending radiu...

AI Technical Summary

Problems solved by technology

[0004] Since the mold in the prior art adopts a convex structure and a one-time forging forming process, the blank is always in a free state during the forming process, so that the rebound deformation after forming is relatively large, resulting in the formation of the side wings of the side roof curved beam after forming. The flatness of the plate is difficult to meet the standard, which affects the quality of the subsequent welding installation of the side roof curved beam

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