Mitsubishi Heavy Industries Limited

Mitsubishi Heavy Industries Machinery Systems, Ltd.

Mitsubishi Heavy Industries Printing & Packaging Machinery, Ltd.

Chukoh Chemical Industries, Ltd.

Mitsubishi Heavy Industries Printing & Packing Machinery, Ltd.

Hiroshi Ishibuchi

Yukuharu Seki

Makoto Ando

Kuniaki Wakusawa

Kazukiyo Kohno

Junichi Kawase

Takashi Nitta

Akira Ogino

Hiroyuki Takenaka

Akihisa Fujita

Hideo Okuhara

Masahiro Yamada

Takaharu Hiroe

Shoichi Aoki

Koki Tateishi

Shuichi Takemoto

Yusuke Hazui

Hideki Mizutani

Takashi Toyohara

Takafumi Yoshida

Kazuhito Ohira

Koshi Tanimoto

Naoyuki Fukushige

Hideo Imazato

Katsuaki Takasaki

Toshinao Okihara

Takafumi Arakawa

Kazukiyo Kouno

Kouji Hattori

Yukuhara Seki

Tadashi Itoyama

Satoshi Matsuda

The corrugated cardboard sheet manufacturing system including a production state information acquisition device; a control value information acquisition device for acquiring control value information of a control element of a corrugated cardboard sheet manufacturing apparatus exerting an influence on the warp of a corrugated cardboard sheet; a warp information acquisition device for acquiring information of a warp amount of the corrugated cardboard sheet; a storage device for storing a performance data set including at least production state information, the control value information, and the warp information; a pre-control table storing a standard control value of the control element set in accordance with a production state; a correction table for correcting the standard control value to set an initial control value; an update device for updating the correction table by reflecting the performance data set; and control device for performing feedforward control of the control element using the initial control value.

Corrugated cardboard sheet manufacturing system

A corrugated board sheet defect detecting device detects a defect in a single-faced cardboard sheet guided by a guide member with corrugated core paper facing outwards. The device includes a radiating device, an image capturing device, an image processing device, and an assessing device. The radiating device is configured to radiate light toward the core paper at a radiation angle relative to the single-faced cardboard sheet. The image capturing device is configured to capture an image of a portion of the core paper irradiated with the light. The image processing device is configured to a light portion and a dark portion in a direction in which the single-faced cardboard sheet is transported based on the captured image. The assessing device is configured to assess a quality by comparing a length of the light portion and a length of the dark portion.

Corrugated board sheet defect detecting device, corrugated board sheet defect removing device and corrugated board sheet manufacturing device

A system for diagnosing performance degradation of a machine element includes an AE sensor that generates an AE waveform signal; a vibration sensor that generates an acceleration signal; a signal processing unit including an AE signal processing system that performs predetermined signal processing on the plurality of AE waveform signals, a vibration signal processing system that performs predetermined signal processing on the acceleration signal, and a switching parameter generating section that generates a predetermined numeric parameter to switch a measuring mode from the AE method to the vibration method; and controlling unit that selects a result of the processing in performed by the AE signal processing system at the initial stage and selects, after the numeric parameter successively turns from increasing to decreasing, a result of the processing by the vibration signal processing system.

Method for diagnosing performance degradation of machine element, and system for same

A double facer that fabricates a corrugated fiberboard and that includes heat plate units having thin walls aims at improving the heat conductive efficiency to fiberboard sheets in order to enhance responsibility to the setting temperature and concurrently avoiding thermal deformation of the heat plates due to a difference in temperature between the top surface and the bottom surface. The heat plate unit for fabricating a double-faced corrugated fiberboard included in a double facer that fabricates a double-faced corrugated fiberboards by gluing a single-faced corrugated fiberboard in a swath form and a linerboard together, the heat plate, being horizontally disposed and having a top surface on which the single-faced corrugated fiberboard in a swath form and the linerboard overlapping and being glued together travels, includes: a rib, disposed on a bottom surface of a heat plate, extending in a width direction of the heat plate, being coupled to the heat plateto form an integrated body, and being capable of thermal expansion; and temperature controlling means that controls a temperature of the heat plateand a temperature of the ribindependently of each other.

Heat plate unit and double facer for fabricating double-faced corrugated fiberboard

Provided are a heat resistant laminated conveyor belt and manufacturing method thereof by which a belt surface pressure when a liner and corrugated core paper are pressed and bonded together can be increased to thereby enhance a bonding performance. The heat resistant laminated conveyor belt comprises a belt core layermade by a heat resistant non-metallic fiber substrate being impregnated with a fluororesin dispersion and then dried and sintered and a surface layer(plain weave wire, etc., for example) formed on the belt core layervia an adhesive layermade by a fluororesin film, the surface layer having a fabric structure using an element wire or wires made of a ferrous metal or having a structure in which the element wire or wires are arranged together. As the surface layer, a fabric structure using an element wire or wires made of a non-ferrous metal, inorganic compound, organic compound or carbon is used or a structure in which the element wire or wires are arranged together (plain weave wire, parallel wire, etc., for example) is used. As the element wires, stranded wires, parallel wires or the like are used.

Heat resistant laminated conveyor belt and manufacturing method thereof

A system for fabricating a corrugated board sheet fabricated includes warp status information obtaining means (A-H,A,B,A-H,) for obtaining warp status information concerning status of the warp of the corrugated board sheet fabricated by a corrugated-board fabrication machine (); running-state information obtaining means (A-H) for obtaining running state information concerning a running state of the corrugated-board fabrication machine (); control variable calculating means (A-H) for calculating a control variable of a particular control factor that affects the warp of the corrugated board sheet and that is one among control factors used to control the corrugated-board fabrication machine () based on the warp status information of the corrugated board sheet and the running state information of the corrugated-board fabrication machine (); and control means (A-H) for controlling the particular control factor using the control variable calculated by the control variable calculating means (A-H).

System for fabricating corrugated board

Torque necessary for cutting band-like paper is properly distributed to both of the preceding motor and the following motor, thereby making it possible to accurately cut the band-like paper. The cut off method for a cut off apparatus including: a preceding knife cylinder on whose peripheral surface a preceding helical knife is provided; a following knife cylinder on whose peripheral surface a following helical knife, which cuts off band-like paper D in cooperation with the preceding knife, is provided; a preceding knife driving motor which rotationally drives the preceding knife cylinder; a following knife driving motor which rotationally drives the following knife cylinder; and a cut off control device which individually controls the preceding knife driving motor and the following knife driving motor, is characterized in that the method comprises: giving, when the band-like paper D is cut, the preceding knife and the following knife a specified amount of torque in the direction in which the preceding knife and the following knife are pressed against each other, by means of the preceding knife driving motor and the following knife driving motor.

Control device for cut-off apparatus

A double facer for use in a corrugated fiberboard sheet manufacturing system wherein a moisture content of a double faced corrugated fiberboard sheet is set at an optimum value at all times for stably producing the double faced corrugated fiberboard sheet with less bonding failure and less warp. The double facer comprises moisture content detecting means for detecting a moisture content of the double faced corrugated fiberboard sheet after passed through the heating means or for detecting a parameter correlating with the moisture content, and a control means for controlling a heat reception quantity of the double faced corrugated fiberboard sheet on the basis of a detection result from the moisture content detecting means so that the moisture content of the double faced corrugated fiberboard sheet approaches a predetermined optimum moisture content.

Double facer for use in corrugated fiberboard sheet manufacturing system

A bonded sheet material manufacturing system capable of setting a moisture content of various types of sheet members to be bonded to each other to an optimum value for stably producing a bonded sheet material with less bonding failure and less warp at all times, where the sheet members are heated by individual sheet member heating means and then bonded to each other to produce the bonded sheet material. The system comprises a moisture content detecting means provided for at least one of the sheet members for detecting a moisture content of the sheet member or a parameter correlating with the moisture content and a control unit for controlling the sheet member heating means on the basis of detection information from the moisture content detecting means so that the moisture content approaches a predetermined optimum moisture content.

System for manufacturing bonded sheet material

The present invention relates to a method capable of certainly correcting a phase shift between a plurality of core paper layers. In the method according to this invention, the next phase shift quantity &dgr;&prime;,is estimated on the basis of a previous measured phase shift value &dgr;,and the present measured phase shift value &dgr;,and a single-faced corrugated fiberboard sheet tension changing quantity &Dgr;T,for correction of the next phase shift quantity &dgr;&prime;,estimated is calculated to adjust the tension to the single-faced corrugated fiberboard sheet on the basis of the calculated tension changing quantity &Dgr;T,. This invention is effectively applicable when, for example, manufacturing a two-layer core single-faced corrugated fiberboard sheet or the like.

Phase control method and system for corrugated fiberboard sheet comprising a plurality of core paper layers

The present invention relates to a corrugator and corrugated fiberboard sheet manufacturing method which are capable of accurately adjusting the quantity of moisture included in a sheet to certainly suppress the warp deformation of the sheet with the passage of time. The corrugator has an adhering section equipped with a plurality of pressurizing units separately disposed in series along a sheet conveying direction, where a front linerboard and a rear linerboard are adhered to each other to form a corrugated fiberboard sheet and the corrugated fiberboard sheet formed in the adhering section is processed into a predetermined configuration in a processing section standing on the downstream side of the adhering section. The corrugator comprises sensors placed on the upstream side of the processing section for detecting moisture content conditions of the front linearboard and the rear linerboard, respectively, moisturizing units provided on the upstream side of the sensors and on the downstream side of the adhering section for directly supplying moisture to surfaces of the front linerboard and the rear linerboard and a controller for setting moisture quantities to be supplied from said moisturizing units on the basis of detection information from said sensors.

Corrugator and corrugated fiberboard sheet manufacturing method

The present invention relates to a sheet tension adjusting method which allows the tension to a single-faced corrugated fiberboard sheet or a liner to be greatly adjusted with a high accuracy to be capable of the adjustment of upward or downward warps of the corrugated fiberboard sheet. In the method according to this invention, when manufacturing a single-faced corrugated fiberboard sheet S.sub.1 in a manner that a liner L.sub.1 is adhered onto a corrugated sheet C.sub.1, the single-faced corrugated fiberboard sheet S.sub.1 is wound around one or more rolls 1 to change a braking force to the roll 1, thereby adjusting the tension to the single-faced fiberboard sheet S.sub.1. Further, this invention is effectively applicable in manufacturing various kinds of corrugated fiberboard sheets.

Sheet tension adjusting method and apparatus

The present invention relates to a single facer, which comprises a humidifying and heating unit placed on the upstream side of an air pressurization corrugating mechanism for humidifying and heating a corrugating medium and a feed mechanism for supplying the corrugating medium, processed by the humidifying and heating unit, to the air pressurization corrugating mechanism at a given speed. The corrugating medium is supplied at the given speed after the humidification and heating process for the corrugating medium, so that an air pressure to be taken at the corrugation is reducible and a predetermined flute configuration is maintainable. In addition, the spring back of the corrugating medium hardly occurs, which makes it possible to manufacture a corrugated fiberboard sheet with a high shock absorbing ability.

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Hiroshima-ken, Japan

Hiroshi Ishibuchi