A punching die stroke limit device

Abstract

A stroke limiting device for a blanking die, relating to the technical field of progressive dies, comprising a stroke limiting device body, the stroke limiting device body comprising an upper stroke limiting column whose upper end is fixedly connected to an upper die base, and a lower end that is fixed to the lower die base The connected lower stroke limit post, the limit post stroke detection mechanism, and the limit post stroke protection mechanism, the upper stroke limit post and the lower stroke limit post are arranged coaxially in the longitudinal direction and used in cooperation with each other, and the lower stroke limit posts are respectively It is connected with the limit post stroke detection mechanism and the limit post stroke protection mechanism. The present invention can effectively solve the problem that direct measurement cannot be performed when adjusting the upper and lower dead points of the mold. In the process of mold pressure testing and press punching, the closed mold overtravel controls the emergency stop of the press. After confirmation, the pressing depth is adjusted again to avoid direct closing. Die and damage the equipment mold, to ensure that the stamping depth of the mold is consistent each time and can directly display and read the closed height of the mold. Secondly, the parallelism between the die base and the press table is indirectly confirmed through the height difference of multiple limit posts.

Description

technical field [0001] The invention relates to the technical field of progressive dies, in particular to a stroke limiting device of a blanking die. Background technique [0002] Conventional progressive die stroke limit post 14 such as figure 1 As shown in the figure, it is fixed between the upper and lower die bases by thread and bolt connection, and the installation position and number of installations are set according to the shape, length, size and accuracy requirements of the die, and its function is to limit the travel of the upper and lower die bases. In use, it is necessary to determine whether the mold is closed in place by measuring the gap between the ends of the upper and lower limit posts, and to ensure that the height of the bottom dead center of each stamping of the mold is consistent during the stamping process. [0003] However, the above-mentioned travel limit post has the following defects in use: [0004] 1. When changing the material belt of differen...

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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