Mitsubishi Heavy Industries Printing & Packaging Machinery, Ltd.

Mitsubishi Heavy Industries Machinery Systems, Ltd.

Mitsubishi Heavy Industries Printing & Machinery, Ltd.

Mitsuhiro Nadachi

Osamu Hatano

Kazuya Sugimoto

Makoto Shimohatsubo

Yasunari Suzuki

Kazuya Akita

Masayoshi Tanchi

Kazushige Kurokawa

A cutting waste removing device, installed in a box making machine for manufacturing corrugated cardboard boxes from a corrugated cardboard sheet, to remove cutting waste generated in a cutting process performed by a paper discharging unit of the box making machine, is provided with an air blowing device which is disposed along a travel region in a device width direction, through which cut processed portions of the corrugated cardboard sheet and the cutting waste travel, and which ejects air toward the cutting waste in such a way as to include a vertically downward directional component in a prescribed ejection mode, and a control device for performing intermittent on-off control of the operation of the air blowing device, wherein the control device controls the air blowing device to be on only at a timing at which the cutting waste passes through an air ejection region of the air blowing device.

Cutting waste removing device, slotter device, and box making machine

A slitter device includes an upper rotary shaft and a lower rotary shaft that are supported so as to be able to rotate. An upper slitter head that is supported by the upper rotary shaft so as to be able to rotate therewith. A lower slitter head that is supported by the lower rotary shaft so as to be able to rotate therewith and that is disposed on one side of the upper slitter head in the axial direction of the lower rotary shaft. An upper movement device that can move the upper slitter head in the axial direction of the upper rotary shaft. A lower movement device can move the lower slitter head in the axial direction of the lower rotary shaft. A control device that controls movement of the upper movement device and the lower movement device.

Slitter device, slitter-head positioning method, and box making machine

A printing device, a printing machine, and a box making machine are provided with printing cylinders on which printing plates can be mounted, ink supply rolls that are placed on the upstream or downstream sides of the printing cylinders in a sheet-conveying direction and that can be in contact with the printing cylinders, ink supply units that can supply ink to the ink supply rolls, first covers that cover the upper parts of the printing cylinders in the vertical direction and that can be opened and closed, and footholds that cover the vertically upper parts of the ink supply rolls and that can be operated by an operator.

Printing device, printer, and box making machine

A viscosity measurement device includes a measurement tool having a pump for feeding a printing liquid by pressure. The viscosity measurement device includes a passage part having a first passage part in which a flow path cross-sectional area for the printing liquid is set at a first area, and a second passage part in which a flow path cross-sectional area for the printing liquid is set at a second area smaller than the first area and which is arranged on an upstream side in a supply direction of the printing liquid with respect to the first passage part, the passage part being interposed in the supply path and arranged upward toward a downstream side in the supply direction of the printing liquid; and a sensor attached to the second passage part and measuring the fall time of the measurement tool in a prescribed vertical region in the second passage part.

Printing liquid supply device, printing liquid circulation device and printing machine

A sheet feeder includes: a wheel for issuing a lowermost sheet out to a sheet processing unit; a grate for spacing the sheet apart from the wheel at a raised position and bringing the sheet into contact with the wheel at a lowered position; and a drive device for driving the grate up and down. The drive device includes: a link mechanism for movably supporting the grate; a spring for urging the grate to the lowered position; a grate raising/lowering cam for periodically driving the grate up/down; and a skip feed cam that is driven by a control device, separately from a drive system of the grate raising/lowering cam, and that, at a timing where reached is a phase at which the grate raising/lowering cam does not put the grate in the raised position, retains the grate at the raised position in order to skip feeding of the sheet.

Sheet feeder

A folder/gluer unit includes an upper transfer belt that transfers a corrugated sheet in a direction of transfer, a pair of forming belts that abut against a folding surface which is formed by folding both end portions of the corrugated sheet in a width direction orthogonal to the direction of transfer and fold both of the end portions of the corrugated sheet in the width direction, a pair of folding bars that are disposed in the direction of transfer, abut against the folding surface at both of the end portions of the folded corrugated sheet in the width direction, and guide both of the end portions of the corrugated sheet in the width direction, a moving mechanism that moves the pair of folding bars in the width direction and in a vertical direction, and a control unit that controls the moving mechanism to adjust a position of the folding bar.

Sheet folding device and carton former

An apparatus includes a washing water supplying path connected to an ink chamber, including a seal blade and a doctor blade slidably contacting an outer circumference of an anilox roll; a washing water supplier for supplying washing water to an inside of the ink chamber through the washing water supplying path; a supplying path opening/closing device that opens and closes the washing water supplying path; a washing water recovering paths connected to the ink chamber; a suction recovering device that recovers the washing water in the ink chamber by suction through the washing water recovering path; and a controller that controls operations of the washing water supplier, the supplying path opening/closing device, and the suction recovering device. The control mode includes a decompression control mode in which the seal blade is elastically deformed towards the ink chamber by decompressing the inside of the ink chamber by recovering the washing water.

Apparatus for washing off ink in flexographic printing press and method for washing off ink in flexographic printing press

A conveyor that is disposed at a printing unit of a box making machine and conveys a corrugated sheetthat is to undergo printing, includes: a conveyor belthaving a conveying face that conveys the corrugated sheet; a suction boxthat is disposed at a side of a backof the conveying face of the conveyor belt and that suctions the corrugated sheet onto the conveying face with negative pressure; a plurality of guide rolls that guide or drive the conveyor belt. Air blowing means is disposed on the back side of the conveyor belt within a region from an outlet roll to an inlet roll of the guide rolls and blows air to an outside.

Conveyor, printing device, and box making machine

In a printing machine that carries out printing while circulating a printing solution, the device inhibits foaming of the ink so that the viscosity of the ink is efficiently controlled. In a printing machine that carries out printing while circulating the printing solution containing a resin component to be transferred to the surface to be printed and a surfactant through a circulation route (), the device supplies a viscosity adjusting solution that controls the viscosity of the printing solution to the printing solution containing foam generated on the circulation route () to break the foam.

Device for managing printing solution in printing machine

It is an object is to improve the cleaning effect, to reduce the cleaning time, and to reduce the consumption of cleaning water during cleaning of an inside of an ink chamber of a flexographic printing machine. For cleaning an ink chamber, purge air 'a' is supplied from pipes-to the ink chamber, and an ink 'f' is collected from an ink supply pipeand an ink recovery pipeto an ink can. Subsequently, cleaning water &#x201c;w&#x201d; is supplied from the pipes-to the ink chamber, as well as defining a cleaning water circulatory passageconstructed from a three-way valve, an ink supply port, the ink chamber, excessive ink recovery ports, the ink recovery pipe, and a connecting pipefor circulating cleaning water &#x201c;w&#x201d; through the circulatory passageto clean inside the ink chamber. At the same time, compressed air &#x201c;a&#x201d; is supplied from a compressed air supply pipeof an air gunto generate bubbles in the cleaning water &#x201c;w&#x201d;, thereby improving the cleaning effect on the ink chamberby the agitating action and the turbulent flow generating action of the bubbles.

Method of and system for cleaning off ink in flexographic printing machine

Disclosed is a method for producing a board box by performing a box-making process of a corrugated board sheet which is formed to have dimensions of a plurality of board boxes wherein the yield of the board sheet and the production efficiency are enhanced and a countermeasure can be taken against paper powder. A method for making a box of a corrugated board sheet by performing a box-making process of a board sheet (S) which is formed to have dimensions of a plurality of board boxes and the cutting the board sheet (S) into dimensions of one board box comprises a step (I) for cutting the board sheet (S) into dimensions of one board box by a cut line (k) in the direction intersecting the conveyance direction (a) along a box making line (PL) after a ruling and grooving step (C) and before a pasting and folding step (E), and a speed increase step (J) for spacing the board sheets (S) and (S) thus cut by a set dimension following to the cutting step (I) by increasing the speed of the board sheets (S) and (S) while conveying toward a subsequent step.

Method and device for producing box of corrugated board sheet

In a printer for corrugated cardboard sheets and a box making machine for corrugated cardboard sheets, a control device that controls an operation of an air cylinder is provided such that an ink supply roll is moved toward or away from a printing cylinder relative to an intermediate position of a gap between ends of a printing plate attached on a surface of a printing cylinder. With this configuration, ink of an ink supply roll is appropriately transferred to the printing plate, an ink film on the printing plate is uniformized, and then printing precision is enhanced.

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Mihara, Japan

Mitsuhiro Nadachi