Punching cutting assembly and folding assembly for single workpiece

Abstract

To achieve the facilitation of the replacement of a die in a die cutter unit constituting a box making machine and the stable feed of a sheetlike work at the time of replacement of the die and to prevent the transfer of cut refuse produced in the die cutter unit to a folding unit. The front end of the feeder belt of a feeder conveyor unit D10 placed in front of a die cylinder Ds is formed into a movable structure and the front end of the feeder belt is allowed to approach an anvil cylinder As in place of the die cylinder Ds retracted in the direction separated from the anvil cylinder As at the time of replacement of a cutting die. The sheetlike work W1 is forcibly fed by the anvil cylinder As and a feeder belt, and the folding belts V2a and V2b of the folding unit FU placed behind the die cutter unit D are made susceptible to on-off operation centering around a pulley on the downstream side to be retracted from the die cylinder Ds at the time of replacement of the cutting die. (C)2005,JPO&NCIPI.

Description

technical field [0001] The invention relates to a single workpiece punching assembly for cutting off a designated part of a single workpiece such as corrugated cardboard and a single workpiece folding assembly for bending a single workpiece in machines such as a corrugated paper box making machine. Background technique [0002] The box making machine for making corrugated boxes is to sequentially perform various processes such as printing, creasing seams, punching holes, etc. on the raw material sheet (corrugated cardboard for corrugated box making machine) supplied from the upstream side, and assemble it into a box. A single workpiece is placed on the table of the paper feeding assembly, and the single workpiece conveyed from the paper feeding assembly is delivered to the printing unit. The printing unit usually consists of multiple units, and each printing unit is responsible for printing in one color. A feeding conveyor device is set between adjacent printing units, whic...

AI Technical Summary

Problems solved by technology

Therefore, the peripheral speed of the second conveying belt changes complicatedly during the in and out operation, and becomes inconsistent with the peripheral speed of the first conveying belt.

In the case that the peripheral speeds of the two conveyor belts are not consistent, the conveyed corrugated cardboard cannot be guaranteed to move forward in a straight line. As a result, the corrugated cardboard passing through the second conveyor belt in and out is very likely to have printing errors in the subsequent process.

In order to prevent this situation, if measures are taken to stop the box making machine during the movement of the second conveyor belt in and out, it will result in a decrease in operating efficiency.

Also have as the prior art of above-mentioned existing gazette, enumerated the scheme that makes a conveyor belt (feeding belt) move back and forth as a whole, even in this example also becomes in addition to moving back and forth as a whole, will add the conveyor belt itself The peripheral speed of the peripheral speed also has the problem of complex changes

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