Kabushiki Kaisha Tokyo Kikai Seisakusho

Tokyo Kikai Seisakusho, Ltd.

Kabushikigaisha Tokyo Kikai Seisakusho

Takeo Nanba

Toshio Hasegawa

Hiroyuki Fujinuma

Mitsuo Kitai

Yoshinori Uera

Yasuo Shibuya

Tomonari Nakajima

Yuuji Iiizumi

Takao Narui

Keiichiroh Ohta

A chopper folder for a rotary press folds signatures which are periodically conveyed, one signature at a time, from a folding machine. The chopper folder includes a pair of folding rollers for folding a signature parallel to the conveyance direction, a prime mover, a crank arm fixed to an output shaft of the prime mover to be rotated together with the output shaft, a blade holder connected to the crank arm via a link, a chopper blade held in the blade holder and adapted to push the signature from an upper surface thereof in order to insert the signature into a space between the pair of folding rollers, and guide units for restricting motion of the blade holder such that the blade holder reciprocates only in a direction perpendicular to a conveyance plane along which the signature is conveyed.

Chopper folder for rotary press

A jaw cylinder in a jaw folder is provided. A first base ( ) includes a stationary member ( ) in a jaw mechanism. A second base ( ) includes a swing member ( ) having a jaw portion accessible to the jaw portion of the stationary member ( ). A third base ( ) has end axes ( ) at both ends and is rotatably supported by the end axes ( ) on a pair of opposite frames (Fa, Fb). The first ( ) and second ( ) bases are rotatably located on the third base ( ) about the rotational centerline of the third base ( ) relative to the third base ( ). The first ( ), second ( ) and third ( ) bases synchronously rotate to move the swing member ( ) close to and apart from the stationary member ( ) to grip a print therebetween. A jaw clearance adjusting mechanism ( ) turns the first ( ) and second ( ) bases about the rotational centerline of the third base ( ) in opposite directions to adjust a gap between the jaw portions of the stationary ( ) and swing ( ) members in the jaw mechanism.

Jaw cylinder in jaw folder

There is provided a paper cutting apparatus for a folder, the folder for a web rotary press being provided with a forming roller pair and at least one nipping roller pair on a downstream side of the forming roller pair in a paper passage between a former and a folding cylinder group, and provided with a paper jam detector S for detecting an occurrence of a paper jam at least in the folding cylinder group, including a first cutter A provided so as to be capable of cutting a paper running between the forming roller pair under the former and a nipping roller pair just on the downstream side of the forming roller pair; a second cutter B provided so as to be capable of cutting the paper running between the folding cylinder group and the nipping roller pair just on the upstream side of the folding cylinder group; and control unit D which receives a paper jam signal generated from the paper jam detector S and sends a cutting signal to the first cutter A and the second cutter B.

Paper cutting apparatus for folder

A continuous web of printed paper is cut by a cutting cylinder into discrete sheets on being wrapped around part of a folding cylinder. The folding cylinder has sets of the folding blade in the cavity each aligned parallel to the cylinder axis and all arranged at constant circumferential spacings. Each folding blade is movable radially of the folding cylinder for pushing one sheet of printed paper off the cylinder surface in the middle of the sheet. Disposed opposite the folding cylinder, a jaw cylinder has cavities opening to its surface at constant circumferential spacings, each for receiving the midpart of the sheet being pushed by the folding blade in the cavity. Each cavity has a movable jaw arranged therein for pivotal motion toward and away from a fixed jaw in order to crease the sheet. An indentation is formed in the fixed jaw so as to be in opposed relationship to the insert part of the folding blade on the folding cylinder in the cavity as the folding blade is inserted in the cavity with the sheet.

Cutting and folding mechanism for a web-fed rotary press

A jaw device for rotary-press folding section provided on a jaw cylinder in which the a continuous paper web guided in between a cutting cylinder and a folding cylinder is guided along the outer periphery of the folding cylinder, with the leading edge thereof held by a holding mechanism provided on the folding cylinder and wound around the outer periphery of the folding cylinder by the rotation of the folding cylinder, cut to a predetermined length with a cutting mechanism; the cut paper sheet being guided to an appropriate position along the outer periphery of the folding cylinder; the leading edge of the cut sheet being released from the held state and caused to protrude into the jaw cylinder with an insertion blade, thereby the cut sheet being folded by gripping the insertion blade and the cut sheet caused to protrude by the insertion blade; the folding section jaw device comprising an opening provided on the outer periphery of the jaw cylinder in parallel with the axial line, and a jaw proper comprising a jaw made of a thin elastic material provided on the inner wall end of the opening and a movable plate made of a thin elastic material.

Jaw device for rotary-press folding section

A rotary printing press has one or two inking rollers each in rolling engagement with both an ink supply cylinder and a plate cylinder. Each inking roller is identically supported by a first pair of roller support members mounted one adjacent each end of the ink supply cylinder for pivotal motion about the axis of that cylinder, and a second pair of roller support members mounted to the first pair for pivotal motion about an axis parallel to the axis of the ink supply cylinder, the second pair of roller support members rotatably supporting one inking roller therebetween. Adjusting screws act between the two pairs of roller support members for adjustably varying the nip width between the ink supply cylinder and each inking roller. The axis of each inking roller, and the axis of the pivotal motion of the second pair of roller support members relative to the first, are both so positioned that the width of the nip between the ink supply cylinder and each inking roller is adjustably variable without substantially varying the nip width between the inking roller and the plate cylinder.

Inking roller nip width adjustments in a rotary printing press

A guide apparatus is composed of a guide plate which is disposed in such a manner as to be able to move between an active position located within the sheet transfer space and a retreat position where the guide plate does not interfere with the sheet transferring from the collect cylinder to the jaw cylinder; a position-changeover drive unit for moving the guide plate between the active position and the retreat position; a printing-speed detection unit for detecting the driving speed of a rotary press and outputting a driving speed signal during printing; and a control unit for outputting, upon reception of the driving speed signal from the printing-speed detection unit, a position changeover signal to the position-changeover drive unit in order to move the guide plate accordingly.

Guide apparatus for use in folder

A delivery fan used in a rotary printing press receives signatures from a folding machine and deposits them on a delivery conveyor and includes hub means, a plurality of fingers mounted to the hub means and a plurality of flat springs anchored to the hub means. The delivery fan handles signatures of varying thicknesses and prevents the signatures from jumping out of pockets formed by the fingers.

Delivery fan in a rotary printing press for delivering signatures in overlapping succession

This invention relates to a jaw folding device for a jaw cylinder of jaw-type folder which can be switched between a correct run mode for performing a duplicate folding and a straight run mode performing an ordinary folding. This jaw folding device comprises a controllable jaw plate which is secured to a controllable jaw plate shaft, a fixed jaw plate arranged so as to face to the controllable jaw plate, an actuating means for actuating the controllable jaw plate between its opening and closing positions in synchronism with a base machine, and a fixing means for fixing the controllale jaw plate in its opening position where a paper is not picked up.

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Yokohama, Japan

Takeo Nanba