Punch press

Abstract

A punch press includes a punch support body, on which a plurality of punches are mounted, and an integrated die support body positioned below the integrated punch support body and including a plurality of dies mounted thereon to perform a punching process in cooperation with the punches. The plurality of the dies are juxtaposed along a rim of the integrated die support body. The integrated die support body includes an integrated die support main body and an in-and-out moving body that enables at least a portion thereof to assume a condition emerging out of the rim of the integrated die support body while its connection with the integrated die support main body is retained. Some of the dies disposed in the integrated die support body are disposed in the in-and-out moving body.

Description

CROSS REFERENCE TO THE RELATED APPLICATION[0001]This application is based on and claims Convention priority to Japanese patent application No. 2013-109586, filed May 24, 2013, the entire disclosure of which is herein incorporated by reference as a part of this application.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a punch press which performs a punching process on a sheet material and, more particularly, to improvements in die replacement work.[0004]2. Description of the Related Art[0005]By way of example, a turret punch press includes a die holder disposed in a lower turret, which defines an integrated die support body, and a die supported by the die holder, which defines a lower tool. When it comes to replacement of the die, a replacement work is carried out via an attendant worker's hand or a tool inserted between upper and lower turrets. This replacement work is difficult to accomplish because a die placement section of the d...

AI Technical Summary

Benefits of technology

The present invention provides a punch press that makes it easy to replace the die (lower turret) relative to the integrated die support body. The in-and-out moving body (“changer”) is brought out of the rim of the integrated die support body while the die is replaced, and the large space between the upper and lower sides of the die mounting area makes it easy to view the die and replace it safely. The in-and-out moving body is securely positioned and the die replacement work is efficiently accomplished. The integrated die support body may be a turret, which makes it easy to replace the die. The in-and-out moving body is rotatable about a traverse center shaft, which simplifies the construction and reduces the cost of manufacturing.

Problems solved by technology

This replacement work is difficult to accomplish because a die placement section of the die holder is hidden beneath the upper turret and is therefore not readily available within the sight.

In particular, in the case of the die holder in which a plurality of dies are supported having been juxtaposed relative to each other in a radial direction of the lower turret, the attendant worker's hand would hardly reach, from below the lower turret, the die situated at a far deep side as viewed from an outer periphery of the lower turret and, hence, the replacement is substantially impossible to achieve.

Removal of the die holder in part or whole of the die holder as disclosed in Japanese Patent No. 2861928 requires, in addition to the die replacement work, a heavy and arduous work to remove the die holder relative to the lower turret.

Therefore, a substantial amount of time is required, and also the attendant worker is loaded too much.

H07-053777 tends to render the equipment to be bulky.

Images