Transverse rapid die changing method and device for multi-station die

Abstract

The invention provides a transverse rapid die changing method and device for a multi-station die. The method comprises the following steps that S1, an upper die and a lower die are opened; S2, a press machine sliding block falls down; S3, an upper clamping oil cylinder and a lower clamping oil cylinder are loosened; S4, an upper sliding plate, the upper die, the lower die and a lower sliding plate are connected into a whole; S5, a transverse die changing servo oil cylinder is dragged to a preset position to stop; S6, the upper die and the lower die are replaced with new upper dies and new lower dies; S7, the transverse die changing servo oil cylinder extends and resets; S8, the upper clamping oil cylinder and the lower clamping oil cylinder are clamped in place; and S9, the press machine sliding block moves upwards to a working station, and die changing is completed. According to the method and the device, the problem of unbalance loading of a press machine and the problem of out-of-tolerance caused by insufficient pressure can be effectively solved, and meanwhile, the die changing efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of tools for metal stamping forming equipment, and in particular relates to a method and a device for quickly changing a multi-station mold laterally. Background technique [0002] In order to ensure the functions of the train entering the station, crossing the line and turning, it is generally necessary to use a kind of equipment specially used for trains crossing the line, the turnout. Since the centrifugal force is very large when the train turns, in order to better resist the centrifugal force and maintain the stability of the train, special-shaped steel rails are generally used. During the production of special-shaped rails, hot die forging is required at the heel. [0003] At present, four-station molds are often used for forming, that is, a set of tooling is equipped with four-station molds. After the rail is heated, it goes through four stations for hot forging and forming, and finally forms a prod...

AI Technical Summary

Problems solved by technology

On the one hand, this leads to unbalanced loads at the first and second stations, and the unbalanced load moment is greater than the allowable value of the press, posing hidden dangers

On the other hand, due to the eccentric load of the second station, the pressure cannot meet the process requirements, and there are defects such as insufficient product pressure and out-of-tolerance dimensions.

In addition, due to the variety of special-shaped rail products and miscellaneous models, there are also many types of four-station molds for hot forging, and there is a problem of cumbersome procedures in the actual production process of mold replacement

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