Kabushiki Kaisha Tokyo Kikai Seisakusho

Tokyo Kikai Seisakusho, Ltd.

Yukitoshi Takahashi

Hiroyuki Fujinuma

Tadashi Hachiya

Toshio Hasegawa

Masahiko Miyoshi

Kenji Kusunoki

Kunio Suzuki

Masayoshi Sato

Noritake Harada

Yuji Kohara

Tomonari Nakajima

Nobuaki Hashimoto

A folding apparatus of a rotary press which can select collect run or straight run comprises: a fixed pin camwhich performs operations of straight run and collect run; a correction pin camwhich stops in case of straight run, and protrudes/retracts a pin end portion with respect to an outer periphery of a folding cylinder once per two rotations of a folding cylinderin case of collect run; a blade camwhich thrusts a blade of each blade deviceinto a jaw deviceonce per rotation of the folding cylinder in case of straight run, and thrusts the same into the jaw deviceonce per two rotations of the folding cylinder in case of collect run; switching meansfor switching between a drive side connection and a stop side connection of the correction pin cam and the blade cam; and detecting meansfor detecting a start-up timing of the switching means.

Folding apparatus of rotary press

A delivery apparatus for folding machines having a folding apparatus FA and a delivery apparatus DA, comprising a delivery flyfor receiving signatures S, Sand Sfolded by the folding apparatus FA, a conveyor C for operating the delivery flyat a predetermined speed ratio and receiving the signatures S, Sand Sfrom the delivery fly, a gear drivehaving a plurality of gear ratios provided between the folding apparatus FA and the delivery flyfor transmitting power to the delivery fly, and changeover meanscapable of selectively changing over the gear ratio of the gear drive, so that the operating speed of the delivery flycan be set to a plurality of speed steps with respect to the operating speed of the folding apparatus FA.

Delivery apparatus for folding machines

A web of printed paper is cut into sections by a cutting cylinder while riding on a folding cylinder, and each paper section has its midpart subsequently pushed by a folding blade on the folding cylinder into a jaw cavity formed in the surface of a jaw cylinder in order to be folded into the form of a signature while being transferred from the folding cylinder onto the jaw cylinder. Mounted adjacent the opposite ends of the jaw cavity in the jaw cylinder are a pair of hooks which are cammed into and out of the space that is created by the midpart of each paper section upon insertion in the jaw cavity. The paper section has its midpart positively retained in the jaw cavity while being folded. A set of fixed and movable jaws is also provided in the jaw cavity and functions mostly to fold the paper section rather than to grip the same against accidental detachment.

Apparatus for folding printed paper sections

A blanket to be mounted on a blanket cylinder includes a blanket body and two band sheets serving as reinforcing members and attached to corresponding parallel, opposite end portions of the blanket body across a width of the end portions. One of the band sheets is attached only to one end portion of the blanket body and only on a side of the blanket body which comes into contact with the blanket cylinder when the blanket is mounted on the blanket cylinder. The other band sheet is longitudinally folded in two and is attached to the other end portion of the blanket body such that the other end portion is sandwiched therebetween and the other band sheet has a substantially same thickness on each side of the other end portion.

Printing blanket having reinforcing band sheets on opposite end portions

A blanket-mounting mechanism includes a dragging shaft, a rotating device, a correction device, and a deflection suppression device. A dragging-shaft accommodation bore extends axially through a blanket cylinder. A blanket insertion groove extends axially on the outer circumferential surface of the blanket cylinder and extends radially to the dragging-shaft accommodation bore. The dragging shaft has a blanket-end reception groove formed on the outer circumferential surface and adapted to receive one end of a blanket. The dragging shaft is inserted into the dragging-shaft accommodation bore with an appropriate gap maintained therebetween and is supported rotatably. The rotating device is disposed at the side of one end face of the blanket cylinder and is connected to the dragging shaft. The correction device is disposed at the side of the other end face of the blanket cylinder and is able to grip/release the dragging shaft so as to adjust the angular position of the dragging shaft. The deflection suppression device supports the dragging shaft accommodated within the dragging-shaft accommodation bore while permitting the dragging shaft to rotate.

Blanket-mounting mechanism of printing press

An ink fountain has one side closed by a fountain roller constantly exposed to the ink contained therein. Forming a part of the fountain bottom, a blade assembly defines in combination with the fountain roller an ink outlet which is to be closed and opened as the blade assembly travels toward and away from the fountain roller. Sprung away from the fountain roller, the blade assembly is moved toward the fountain roller against the spring bias by at least two linear actuators such as double-ended-rod fluid actuators spaced from each other in the axial direction of the fountain roller. The output members of the linear actuators, such as the reciprocable cylinders of the double-ended-rod fluid actuators, are rigidly interconnected as by a simple link, being aligned parallel to the fountain roller axis, for synchronous operation, thereby conjointly causing the travel of the blade assembly into leak-free contact with the fountain roller.

Leak-free ink supply apparatus for keyless printing

An ink supply unit of a keyless printing press is capable of preventing leakage of an ink while printing is interrupted. The ink supply unit includes a movable blade provided between the both side plates in integral form, inclined descending toward a tip end side, supported on a base for movement toward and away from the peripheral surface of the fountain roller, driving means for driving the movable blade between a position where a tip end of the movable blade contacts to the peripheral surface of the fountain roller and a predetermined position where the tip end of the movable blade is located away from the peripheral surface of the fountain roller, and guide means coupled with the movable blade and guiding the movable blade so that the tip end of the movable blade moves with respect to the peripheral surface of the fountain roller with maintaining a predetermined attitude.

Ink supply unit for keyless printing press

An ink fountain apparatus for a printing press includes an inclined member with an ink supply adjusting member which is swingable about an axis parallel with the rotational axis of an ink fountain roller for movement between a first position where ink fountain is formed and a second position where the ink fountain is not formed. Piston rods of hydraulic cylinders are connected to the inclined member via a connection mechanism to move the inclined member between the first position and the second position. Stoppers are also provided to stop the inclined member at the first position. Springs are included in the connection mechanism to press the inclined member against the stoppers. The spring force produced by the springs is smaller than the force produced by the drive means. With this structure, the work load of an operator can be reduced while enhancing the efficiency and safety of his work. Also, it is possible to prevent the inclined member from deforming even when the inclined member contacts the stoppers in different states, thereby guaranteeing smooth adjustment of the ink supply adjusting member and improving the ability of the ink fountain apparatus to supply ink.

Ink fountain apparatus for printing press

A device for removing water from the returning portion of the peripheral surface of a meshed roll mounted in a planographic printing press comprises at least one roll for removing water pressed against the said returning portion. The peripheral surface of the roll is made of soft and smoothed material, or brushes project to the centrifugal direction from the peripheral surface of the roll. In one embodiment, a smooth roll of rubber or soft resin presses against the meshed roll, a second smooth roll of metal contacts it, a blade scrapes the second roll and a container receives recovered water from the blade.

Device for removing water from meshed roll

In a rotary printing press, an apparatus, for automatically mounting and removing printing plates comprises: a magazine associated with a main body and including a plate take-out unit for positioning a plurality of successive fresh printing plates in order, and a plate storage unit for temporarily storing a plurality of used printing plates; and a mechanical hand adapted for holding a printing plate and supported by a shaft of and an arm of the main body, the mechanical hand being actuated by the shaft and arm for reciprocating between the magazine and a peripheral surface of a plate cylinder.

Growing community of inventors

Kawasaki, Japan

Yukitoshi Takahashi