Apparatus for punching moving material webs

摘要

In order to punch a moving material web there are two punching units present, which are arranged one after another in the direction of movement of the material web. Each punching unit has two punching tools, which interact with a rotatably mounted back-pressure cylinder that can be driven. The punching tools are arranged on a rotatably mounted drive shaft that can be driven, and their position can be adjusted in the direction of the longitudinal axis of the latter and locked in various working positions. Each punching tool has a cylindrical base, to the periphery of which a punching strip which is provided with at least one punching shape is fixed such that it can be replaced. The drive shafts can be driven independently of the associated back-pressure cylinder.

主权项

1. An apparatus for punching a moving material web, comprising:
at least two punching units, which are arranged one after another in a direction of movement of the material web, each punching unit has at least one punching tool, which interacts with a rotatably mounted back-pressure cylinder that can be driven, wherein the at least one punching tool is arranged on a rotatably mounted drive shaft that can be driven and wherein a position of the at least one punching tool can be adjusted in the direction of a longitudinal axis of the drive shaft and wherein the at least one punching tool can be locked in various working positions, each punching tool has a cylindrical base, on a periphery of which a flexible punching strip is provided with at least one punching shape is fixed such that the punching strip is wrapped around the periphery of the cylindrical base and can be can be replaced, wherein edges of the punching strips are substantially linear.