Shinohara Machinery Co., Ltd.

Kabushiki Kaisha Shinoharatekkosho

Masayuki Iwamoto

Yasuo Sone

Setsuo Araki

The present invention relates to sheet-fed satellite-type printing press and aims at versatile satellite-type press by which printing mode can easily be modified. For this purpose, a part of side frames () corresponding to the circumference of common pressure cylinder () is cut out to form common installing portion () and printing unit () or sheet perfecting unit () can be installed into the common installing portion (). Thereby, multi-color printing or perfecting printing can be performed at will.

Versatile satellite-type printing press

Plate transfer apparatus is disclosed which is suitable for satellite-type printing press and excels in operability with small space. For these purposes, plate transfer apparatus comprises transfer means () which has functions in it's normal and opposite rotations, for ejecting the used plate () outwards and feeding new plate () to the plate cylinder (), flat sustaining board () provided above the transfer means () in order to prepare new plate (), one end of the board () is swingably supported and the other end is branched, and drive means () for swinging the sustaining board () in order to sink the branched end into transfer path of the transfer means ().

Plate transfer apparatus

An apparatus for integrally and conveniently adjusting printing pressures of blanket cylinders in a satellite-type printing press is provided. Printing pressure is adjusted all together by rotating eccentric bearing means () of a plurality of blanket cylinders () by wheel () which is fixed to primary axis (), penetrating through the center of common pressure cylinder ().

Apparatus for adjusting printing pressure of satellite-type printing press

A method of registering press plates on plate cylinders used in a sheet-fed press for multicolor printing, in which register information is obtained by using edges of the press plates as references. Each press plate is stretched around a plate cylinder with its front edge and one side edge abutted against gripping references on the plate cylinder. A press plate register measuring device similarly uses the edges of the press plate as references, with the press plate in the same positional relationship as on the press cylinder. On the measuring device deviations between references marks on the plates and benchmark references are measured and utilized to adjust the position of the plate cylinders to bring the printing plates into registered printing positions.

Press plate registering method

A coupling structure for a reversing mechanism of a printing press, having a fixed gear (18), a pivotable regulating gear (20), and a plurality of parallel tightening bolts (30) extending in a regularly spaced manner around a cylinder shaft (12) of the reversing mechanism. A one-way clutch (54) transmits limited tightening torque to the bolts (30) to hold gears (18) and (20) together in an engaged state, whereas in a release state, the bolts (30) are freely loosened. A center gear 56 having an internal gear (62) transmits torque to the one-way clutch from an external drive motor (80).

Position with limited torque transmission in one drive direction and

A structure of an intermediate cylinder of a sheet-feed press is disclosed. The present invention comprises a main shaft 10, a front edge gripper holder 12 formed integrally with the main shaft 10, having a group of front edge grippers 20 aligned in an axial direction, and having an arcuate outer surface section, holding discs 24 disposed at both side portions of the main shaft 10 in such a fashion that the rotation thereof relative to the main shaft 10 can be adjusted, and a rear edge gripper holder 22 having a group of rear edge grippers 28 aligned in the axial direction between the holding discs 24, and having a sheet member 38 disposed similarly on the outer peripheral surfaces between the holding discs 24, having an arcuate section, and partially overlapping the outer surface of the front edge gripper holder 12. With this arrangement it is possible to obtain an intermediate cylinder of a sheet-feed press production and assembly adjustment of which can be made by far more easily, and which does not cause any trouble during delivery of sheet.

Intermediate cylinder of sheet-feed press

A reversing gripper apparatus of a one side/perfecting printing press is disclosed. This reversing gripper apparatus comprises a receiving portion wherein a gripper pad fixed to the external circumference of a reversing cylinder grips a sheet of paper in combination with gripper members and a space for withdrawal, the gripper members comprise a combination of a master gripper provided on a common shaft and an auxiliary gripper opposed to the master gripper, the master gripper is formed with a width sufficient to cover the receiving portion of the gripper pad and the point of the auxiliary gripper at the same time and is controlled by a common shaft, and the auxiliary gripper has such a width as to be partly opposed to the width of the master gripper and is controlled with the common shaft as the center. By adopting this structure, the gripping function, register accuracy, and the gripping force of the reversing gripper apparatus are greatly increased.

Reversing gripper of one side and perfecting printing press

An adjusting device for sheet reversing in a sheet-fed rotary press comprises a reversing cylinder which is driven by a drive shaft and carries a plurality of sheet grippers, a rotary drum carrying a plurality of leading-end grippers, a rotary assembly carrying a plurality of trailing-end grippers, which is concentric with said drum, a flange fixed to said drive shaft, a first drive gear fixed to said flange, a second drive gear which is adjustably attached to said flange and has a driving connection with said rotary assembly, a third drive gear which is adjustably attached to said flange and has a driving connection with said rotary drum, and means for manually rotating said reversing drive cylinder through said first gear, for selectively adjusting the angular position of attachment of the second and third gears to said flange.

Adjusting device for sheet reversing in a sheet-fed rotary press

A sheet drawing device for a sheet-fed rotary press comprises a pair of adjusting gears adjustably mounted on a main shaft, a plurality of segment arms rotatably mounted on the main shaft, a bearing block adjustably mounted on each of the segment arms, which is pivotably mounted for adjustment about an axis perpendicular to the bearing axis of the bearing block, a sheet-drawing roll journaled in each bearing block, a plurality of fixtures secured to a gripper shaft which is pivotably mounted in the adjusting gears, each fixture being resiliently connected to a guide which is rotatably mounted on the gripper shaft and which carries a freely rotatable trailing-end gripping roller that is engageable with one of the sheet-drawing rolls, means for controlling pivoting of the gripper shaft to bring the trailing-end gripping rollers into and out of sheet gripping engagement with the sheet-drawing rolls, a second gripper shaft pivotably mounted in the adjusting gears, on which are secured a plurality of driving arms each of which carries a driving roller engaged in a recess in one of the sheet-drawing rolls, and means for controlling pivoting of the second gripper shaft, said means acting to take up slack in a sheet which is being gripped by the trailing-end gripping rollers, by driving the sheet-drawing rolls in the sheet-drawing direction.

Growing community of inventors

Shizuoka, Japan

Masayuki Iwamoto