Stretching cushion locking device

Abstract

The invention discloses a stretching cushion locking device which comprises a stretching cushion cylinder, a draw bar, a locking sleeve, mounting plates, driving components, supports, movable plates, locking columns and springs. The stretching cushion locking device has the advantages that the movable plates can be driven by the driving components to move towards the centers of stretching cushions, and accordingly the locking columns can be driven by the movable plates to move towards the centers of the stretching cushions; at least a part of each locking column can extend into locking teeth on the corresponding locking sleeve at the moment and can mesh with the locking teeth, accordingly, the stretching cushion locking device has functions of preventing the draw bar from downwardly moving owing to the mode, the stretching cushions can be locked, the locking columns can be driven to outwardly move when the driving components move away from the centers of the stretching cushions, and the draw bar can freely move up and down; the stretching cushions can be locked at optional locations in controllable stroke ranges by the aid of simple and reliable mechanical transmission and locking structures of the stretching cushion locking device, accordingly, equipment and mechanisms can be simplified to a great extent, and spaces can be saved.

Description

technical field [0001] The invention relates to the field of forging equipment, in particular to a locking device for a stretching pad, which can be used to lock the stretching pad on a press. Background technique [0002] The stretching pad is the mechanical component of the press to realize the stretching process and stamping. At present, the press equipment provided by domestic and foreign equipment suppliers mostly uses a locking valve to lock the hydraulic oil in the oil tank, so as to achieve locking. In order to adapt to the complex stretching process, the locking device usually needs to be able to adjust the locking position flexibly. In order to realize such adjustment, the equipment structure becomes more complicated. [0003] As a typical example, the Chinese invention patent application with application number 2014108099320 (publication number CN104454783A) discloses a pure gas stretching pad structure with single crown and single master cylinder for a press, and...

AI Technical Summary

Problems solved by technology

[0004] Although the structural form proposed by the above-mentioned prior art breaks through the size limit of the worktable in terms of the range of process adaptation and simplifies assembly by installing a main shaft, its structure is still relatively complicated and bulky, and the instability of the hydraulic system is also high. Brings various risks to latch-up operations

[0005] In addition, the structural form proposed by the above-mentioned prior art is mainly suitable for some large-scale press equipment. This type of equipment usually has a large volume of stretching pads, and the requirements for equipment installation are also high. A large underground depth is required to meet the needs of installation and maintenance. , which increases the construction cost, it is not suitable for some small non-standard pressure equipment or occasions with strict requirements on the installation location and space environment

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