Parallel-folding device for folding machine

Abstract

A parallel-folding device for a folding machine capable of automatically performing the position control of a brush guide according to folding specifications under the operation of the machine. A first gripper cylinder (26), an upper second gripper cylinder (27), and a lower second gripper cylinder (28) are arranged with their peripheral surfaces oppositely brought into contact with each other, a signature is parallel-double folded by the upper second gripper cylinder or the gripper claws (36a to 36d, 38b, 38d) of the upper second gripper cylinder and the lower second gripper cylinder in association with the knife of the first gripper cylinder, and brush guides (41) are attached onto the peripheral surface of the first gripper cylinder at positions on the upstream side of opposed contact points between the first gripper cylinder and the upper second gripper cylinder and between the first gripper cylinder and the lower second gripper cylinder in the rotating direction. The brush guides are installed so as to be moved close to and apart from the peripheral surface of the first gripper cylinder by a pair of right and left drive parts (44b, 44a) formed of screw shafts (51a, 51b) and brackets (58a, 58b) driven by motors (47a, 47b) with rotary encoders (55a, 55b).

Description

technical field [0001] The invention relates to a parallel folding device of a folding machine, which can smoothly transfer signatures between cylinders during parallel folding. Background technique [0002] A web rotary printing machine is equipped with a folding machine that cuts a web (ウエブ) that has been dried and cooled after printing to a predetermined length, or folds it in the width direction or the length direction. [0003] The folding machine has various configurations, for example, there are Figure 5 A folding machine of a parallel folding device as shown (refer to Patent Document 1). [0004] Accordingly, in addition to the cutting cylinder 1, the folding cylinder 2, and the first holding cylinder 3 that are docked with each other and rotate in the direction of the arrow in the figure, there is also a second holding cylinder 4, and the previous mechanism is not shown. The transported web 4 is cut to a specified size by the cutting edge 5 of the cutting cylinder...

AI Technical Summary

Problems solved by technology

However, since the conventional brush guides 11a to 11c can be completely fixed by screws or the contact pressure can be adjusted by operating a handle outside the machine, they cannot be adjusted according to the folding specification (specification) when they are completely fixed. Contact pressure, and when adjusting by handle operation, etc., the burden on the operator is heavy, requiring skilled operation, and the adjustment must be made when the machine is stopped

Images