Stroke limiting device of blanking die

Abstract

The invention discloses a stroke limiting device of a blanking die, and relates to the technical field of progressive dies. The device comprises a stroke limiting device body, the stroke limiting device body comprises an upper stroke limiting column with an upper end fixedly connected with an upper die holder, a lower stroke limiting column with a lower end fixedly connected with a lower die holder, a limiting column stroke detection mechanism and a limiting column stroke protection mechanism, the upper stroke limiting column and the lower stroke limiting column are coaxially arranged in the longitudinal direction and used in cooperation with each other, and the lower stroke limiting column is connected with the limiting column stroke detection mechanism and the limiting column stroke protection mechanism. The device can effectively solve the problem that direct measurement cannot be performed when upper and lower dead points of a die are adjusted, sudden stop of the press is controlled through die closing over-travel in the die pressure test and press blanking process, the pressing depth is adjusted again after confirmation, direct closing and damage to the equipment die are avoided, the stamping depth of the die every time is consistent, and the closing height of the die can be directly displayed and read. Secondly, the parallelism of a die holder and a press table top is indirectly confirmed through the height difference value of the multiple limiting columns.

Description

technical field [0001] The invention relates to the technical field of progressive dies, in particular to a stroke limiting device for a blanking die. Background technique [0002] Conventional progressive die stroke limit column 14 such as figure 1 As shown, it is fixed between the upper and lower mold bases through thread and bolt connection, and the installation position and installation quantity are set according to the mold shape length size and precision requirements. Its function is to limit the travel of the upper and lower mold bases. In use, it is necessary to measure the gap at the end of the upper and lower limit posts to determine whether the mold is closed in place, and to ensure that the height of each bottom dead center of the mold stamping is consistent during the stamping process. [0003] However, the above-mentioned travel limit post has the following defects in use: [0004] 1. When changing material strips of different thicknesses or adjusting the bot...

AI Technical Summary

Problems solved by technology

[0005] 2. Lack of mold height error shutdown function. Misoperation or failure of the height display of the press slider, improper installation of the mold or foreign objects between the press table and the mold will easily cause the travel limit column to be blocked and the stroke limit column to be overloaded. Force damage, press equipment damage;

[0006] 3. During the stamping process, iron filings and foreign matter entering between the travel limit columns will not be able to ensure the consistent depth of the bottom dead center of stamping, which will change the punching pressure center and affect the punching accuracy and the accuracy of the equipment mold

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