Mitsubishi Heavy Industries Limited

Mitsubishi Jukogyo Kabushiki Kaisha

Mitsubishi Heavy Industries Printing & Packaging Machinery, Ltd.

Amada Company, Limited

Mitsubishi Heavy Industries Machinery Systems, Ltd.

Toshihide Kato

Hiroshi Sato

Yukuharu Seki

Takayuki Miyake

Tadashi Hirakawa

Kazuki Mizushima

Kazuya Sugimoto

Kazuhito Ohira

Toshinao Okihara

Daisuke Kanzaki

Tadayuki Kumagai

Jun Watanabe

Masaharu Ito

Masakazu Kimura

Junichi Saito

Tatsuya Amano

A web adhesive application device, adhesive application method, and the cardboard sheet manufacturing device are provided with: an adhesive liquid tank for storing an adhesive liquid; an adhesive application roll is configured for transferring the adhesive liquid to an adhesive application region adjusted according to a paper width of a bottom liner board to be glued together with a single face cardboard sheet; a doctor roller for adjusting the adhesive liquid to a set film thickness; scraping members in pressured contact with the surface of the adhesive application roll on the upstream side of the nip section with the doctor roller; and damming members in contact with the surface of the adhesive application roll on the upstream side of the nip section with the doctor roller in the rotation direction and on the downstream side of the scraping member contact positions in the rotation direction.

Web adhesive application device and adhesive application method as well as cardboard sheet manufacturing device

An order changing method in a corrugating machine having a slitter scorer devices and a plurality of cut-off devices includes a step of aligning a dividing slit of an old order corrugated fiberboard web, which does not coincide with a centerline of the old order corrugated fiberboard web, with a dividing slit of a new order corrugated fiberboard web, which does not coincide with a centerline of the new order corrugated fiberboard web, wherein the new order corrugated fiberboard web has a width different from a width of the old order corrugated fiberboard web such that the method can decrease the number of defective sheets generated during an order change.

Method for order changing in corrugating machines

This invention relates to a double facer of a corrugating machine which aims to improve a drying state or bonding state between a single-faced corrugated fiberboard sheet and a liner and improve the quality of a corrugated fiberboard sheet. In a double facer for bonding together a single-faced corrugated fiberboard sheet and a liner to form a corrugated fiberboard sheet, provided are a heating member disposed along a conveying direction of the corrugated fiberboard sheet; a pressing unit, disposed so as to oppose the heating member, for pushing the corrugated fiberboard sheet against the heating member; a sheet conveying unit, disposed downstream the heating member, for conveying the corrugated fiberboard sheet; and a sheet feeding unit for feeding the corrugated fiberboard sheet toward the sheet conveying unit; while the pressing unit comprises a plurality of pressing devices disposed in series as being separated from each other along the conveying direction of the corrugated fiberboard sheet.

Double facer with threading means

A presser shoe is disposed over the entire width of a single-faced corrugated board opposedly to a glue applicator roll with a traveling path of the single-faced corrugated board therebetween, and a flexible tube is provided which presses the presser shoe toward the single-faced corrugated board by air pressure. The air pressure to be fed to the flexible tube is regulated to a predetermined pressure by an air pressure regulator so as to afford a constant pressing force continually even in the use of single-faced corrugated boards of different flutes. The pressing shoe is formed with a longitudinally extending channel as an air flowing path at least on both longitudinal end sides thereof located outside the single-faced corrugated board, and air nozzles are formed in the presser shoe perpendicularly to the surface of the glue applicator roll over an area capable of being opposed to the single-faced corrugated board, whereby an air jet deviated from the board does not strike against the surface of the glue applicator roll directly.

Glue applicator for corrugated board

In a stuck sheet material manufacturing system for manufacturing a stuck sheet material, which has a sticking device for sticking together a front sheet member and a rear sheet member, the sticking device includes a heating member for heating a sheet member and a pressure device provided oppositely to the heating member for pressing a stuck sheet material to the heating member, and the pressure device includes a supporting member arranged so as to be extended in a horizontal direction perpendicular to a traveling direction, a plurality of weight blocks suspended from the supporting member via elastic members and arranged side by side and vertical movement driving means for driving the vertical movement of the supporting member.

Stuck sheet material manufacturing system equipped with pressure device

An improved disc-shaped knife rotary cutter which has a reduced size and is not complicated in structure as a whole, and which require a knife only on the upper side of a traveling sheet. The knife can be used over a long period and paper powder produced as a result of cutting of a sheet by the knife can be removed by a suction box extending over a full width of the sheet. The improved rotary cutter performs cutting by moving a knife edge portion of a rotating disc-shaped knife into a surface of a sheet being successively fed. On the underside of the traveling sheet, a brush consisting of rod-shaped brush elements is fixed on a backing table over the entire region in the lateral widthwise direction of the sheet. A knife edge of the knife is disposed close to a front end portion of the backing table and upon transfer of the knife in the lateral widthwise direction of the sheet the knife is raised to be disengaged from the brush and the sheet and then it is transferred and set in position. Thereafter, while the knife is being rotated, it is lowered to be engaged with the sheet and again cuts the sheet. Furthermore, grindstones for grinding the knife edge of the disc-shaped knife are provided so as to be movable in the axial direction of a shaft of the disc-shaped knife, and in addition, there is provided a felt immersed in soapy water for peeling off paste from the knife.

Disc-shaped knife rotary cutter

An apparatus for preventing sheets conveyed successively on a conveyor from being stacked up at the end of the conveyor in a disordered state in alignment is improved so as to assure stable operation without deforming edge portions of the handled sheets. The improvements reside in that the apparatus comprises a pair of guide members disposed on a sheet passageway above an inlet of a sheet stack-up section respectively so as to be swingable in the direction of traveling of the sheets and adjustable in positions in the lateral directions, a drive for independently adjusting the positions of the guide members in the lateral directions, sensors for detecting opposite side edge portions of a sheet moving on a transporting conveyor, and a control responsive to results of detection by the sensors for actuating the drive to adjust the positions of the respective guide members in the lateral directions.

Apparatus for preventing disorder in sheet alignment

Growing community of inventors

Mihara, Japan

Toshihide Kato