Abstract: A method for controlling a slitter-scorer apparatus in which a feed line for a paperboard sheet does not need to be stopped when order specification of cutting or scoring for the paperboard sheet has been changed, thereby reducing a setup time, is proposed. The method for controlling a slitter-scorer apparatus including steps of supplying a paperboard sheet along a feed line, and moving a slitter or a scorer in a vertical and/or a widthwise direction to a operative level where the surface of said paperboard sheet is processed thereby wherein: movement of said slitter and/or scorer is controlled such that said slitter and/or scorer either come into sliding contact with or is apart slightly from said surface of the paperboard sheet.

Abstract: An apparatus for accumulating and delivering folded cardboard sheets includes at least a pair of stacking bases moveable along a loop including a stacking position for stacking the cardboard sheets on the stacking bases and a delivering position for delivering the pile of cardboard sheets on the stacking bases. The apparatus receives cardboard sheets fed one by one, accumulates them in a pile consisting of a predetermined number of cardboard sheets, and delivers the pile of sheets. When one of the stacking bases moves away from the stacking position, the other is moved into the stacking position so that the stacking bases alternatively move into the stacking position. Preferably, the loop has resting and ejecting positions and when one of the stacking bases moves from the ejecting to the stacking position, that stacking base ejects the pile of sheets previously formed on the other stacking base.

Abstract: A printing machine in which excessive ink remaining in ink delivery tubings (20, 22, 24) each connecting an ink reservoir (16) to an ink supply source (18) can be quickly removed or rinsed out is provided.

Abstract: A cardboard sheet printing apparatus including: a rotating body that freely rotates inside an ink circulation passage through which ink flows, and a rotation-imparting assembly which is magnetically coupled with the rotating body outside the ink circulation passage and imparts rotation to the rotating body. When the rotating body is caused to rotate by the rotation-imparting assembly, the variation in the load current value that occurs upon changes in the viscosity of the ink that contacts the rotating body is detected; and this variation is compared with load current values that correspond to respective changes in the ink viscosity value stored in memory beforehand and is converted into an ink viscosity value and then displayed, so that the viscosity of the ink is adjusted based upon the calculated results.

Abstract: A cardboard sheet printing apparatus including: a rotating body that freely rotates inside an ink circulation passage through which ink flows, and a rotation-imparting assembly which is magnetically coupled with the rotating body outside the ink circulation passage and imparts rotation to the rotating body. When the rotating body is caused to rotate by the rotation-imparting assembly, the variation in the load current value that occurs upon changes in the viscosity of the ink that contacts the rotating body is detected; and this variation is compared with load current values that correspond to respective changes in the ink viscosity value stored in memory beforehand and is converted into an ink viscosity value and then displayed, so that the viscosity of the ink is adjusted based upon the calculated results.

Abstract: A corrugating roll design for a corrugating machine including a pair of parallel, spaced apart, corrugating rolls which rotate in opposite directions on their respective rotational axes, the rotational axes being spaced apart a predetermined distance, and each of the corrugating rolls being formed along its outer peripheral surface with longitudinally extending teeth with tooth tips and tooth roots. Depressions are provided in the tops of the tooth tips of at least one of the corrugating rolls and spaced apart a predetermined distance along the length of the roll. Each of the depressions has a bottom surface which is located to establish a spacing between the bottom surface of the depression and the tooth root of the other corrugating roll at the actual corrugation impression zone in the nip, which spacing is greater than the thickness of the paper medium.

Abstract: One object of the present invention is to provide a method for cutting a corrugated card board sheet in which continuous trimmed pieces are formed over an order change period, thereby preventing meandering of the sheet without increasing manufacturing cost.

Abstract: A load-applying device used in a double facer that manufactures a corrugated board, the load-applying device comprising load bodies that are caused to ride above a corrugated board sheet only by the weight of weight blocks are disposed in a sheet conveying direction and in a direction at right angles of such sheet conveying direction; thus applying a load to the corrugated board sheet and bonding the corrugated board sheet without causing crushing of the corrugated board sheet or faulty bonding.

Abstract: A cardboard sheet printing apparatus including: a rotating body that freely rotates inside an ink circulation passage through which ink flows, and a rotation-imparting assembly which is magnetically coupled with the rotating body outside the ink circulation passage and imparts rotation to the rotating body. When the rotating body is caused to rotate by the rotation-imparting assembly, the variation in the load current value that occurs upon changes in the viscosity of the ink that contacts the rotating body is detected; and this variation is compared with load current values that correspond to respective changes in the ink viscosity value stored in memory beforehand and is converted into an ink viscosity value and then displayed, so that the viscosity of the ink is adjusted based upon the calculated results.

Abstract: A tension fluctuation absorbing device used in a cardboard sheet manufacturing apparatus and equipped with a tension fluctuation detection assembly and a tension adjustment assembly. The tension fluctuation detection assembly detects fluctuations in the tension generated in a material paper. The tension adjustment assembly is installed on the upstream side of the tension fluctuation detection assembly and adjusts the tension generated in the material paper by increasing or decreasing the feed-out speed of the material paper on the basis of fluctuations in tension detected by the tension fluctuation detection assembly.

Abstract: A pair of drawing members, separated by a prescribed distance, are rotated toward each other in contact with an end packaging material covering the ends of a web wrapped on a web roll. The drawing members are brought toward one another, creating an insertion section by gathering the end packaging and separating the end packaging from the web on the web roll. A cutting member is inserted into the insertion section. The web roll is then rotated, whereby the end packaging is cut and removed from an end of a web roll without damaging the web wrapped thereon. Similar drawing members and cutting members are preferably located at each end of an end packaging removal device, thereby simultaneously removing the end packaging material from both ends of the web roll. The resulting end packaging removal device saves time and labor involved in removing end packaging from a web roll.

Abstract: A load-applying device used in a double facer that manufactures a corrugated board, the load-applying device comprising load bodies that are caused to ride above a corrugated board sheet only by the weight of weight blocks are disposed in a sheet conveying direction and in a direction at right angles of such sheet conveying direction; thus applying a load to the corrugated board sheet and bonding the corrugated board sheet without causing crushing of the corrugated board sheet or faulty bonding.

Abstract: A single facer containing a first corrugating roll, a second corrugating roll and a gluing mechanism further has an introducing device which is disposed to oppose the second corrugating roll across the liner feed line and pressed against the second corrugating roll via a corrugating medium and a liner; a wrapped roll disposed to oppose the second corrugating roll across the liner feed line on the downstream side of the introducing device with respect to the liner feed direction such that it may not bring the corrugating medium and the liner into press contact with the second corrugating roll, the wrapped roll being driven to rotate at a variable circumferential speed relative to that of the second corrugating roll; a wrapping roll for wrapping the corrugating medium and the liner around the wrapped roll, disposed to oppose the wrapped roll across the feed line, the position of the wrapping roll being adjustable along the circumference of the roll; and a position adjusting mechanism for moving the wrapping rol

Abstract: A corrugating roller unit is moved smoothly between a first reference plane and a second reference plane at different heights by a roll-out apparatus having a set of moving support device. A first moving support device supports the corrugating roller unit when the corrugating roller unit is in contact with the first reference plane. A second moving support device supports the corrugating roller unit when the corrugating roller unit is in contact with the second reference plane. A positioning device keeps the second moving support device in contact with the second reference plane when the second moving support device is providing the support for the corrugating roller unit. When the second moving support device moves the second reference plane to the first reference plane, the positioning device prevents the second moving support device from restricting movement of the corrugating roller unit.

Abstract: A cutting device and a wedge shaped separating member are used to cut a packaging material wrapped around an outer perimeter surface of a web roll. The separating member is inserted under the packaging material. A cutting blade is fixed above the separating member to provide for the cutting of the packaging material when the cutting device and separating member are moved along a lateral axis of the web roll. The cut packaging material is completely separated by a second cutting device. The separated packaging material is then rolled and compacted. The result is an automated device which saves time and labor when removing packaging material from a web roll. Furthermore, the removed packaging material is compact, providing for reduced storage and disposal space.

Abstract: The present invention relates to an apparatus for producing single face corrugated web, which comprises the first corrugating roll and second corrugating roll, and further comprises the first smoothing roll provided in a feeding channel of a liner web, a second smoothing roll provided in a feeding channel of a single face corrugated web, and a third smoothing roll provided in a feeding channel of the liner web between the first smoothing roll and the second smoothing roll, wherein the third smoothing roll is constructed so that the liner web fed between the first smoothing roll and the second smoothing roll is brought, by tension, into contact with the outer circumferential surface of the second corrugating roll over an appointed length.

Abstract: A suction conveyor conveys sheets which are stacked in a hopper of a sheet stacker. The suction conveyor includes a suction box and a suction belt that cycles along the surface of the suction box. Porous sections, having sets of suction holes or the like, are formed intermittently at a prescribed pitch on the suction belt. The leading section of the sheet is suctioned to these porous sections, and the sheets are conveyed by the motion of the belt. A scraper at a terminal end region of the conveyance path forcibly peels off the sheet from the porous sections of the suction belt. The sheets are dropped down with the trailing end dropping before the leading end and are stacked in the hopper.

Abstract: Disclosed is a belt speed controller in a single facer consisting of an upper fluted roll, a lower fluted roll, a gluing mechanism, and an application mechanism having an endless belt extended over a plurality of rolls so as to be able to run freely thereby; in which a liner is pressed against the glued crests of corrugation of a corrugating medium to be pasted therewith to form a single-faced corrugated board, characterized in that the speed controller consists of a braking apparatus for braking the roll, of the plurality of rolls over which the belt is extended, locating on the upstream side, with respect to the belt running direction, of the press contact zone where the belt is brought into press contact with the liner, and a control means which actuates the braking means to brake the endless belt via the roll.

Abstract: Disclosed is a corrugated board sheet transporting system in a printing line, in which a plurality of printers, each provided with an ascendable printing cylinder having a printing die mounted thereon and a press roll opposing to the printing cylinder, are aligned in a corrugated board sheet forwarding direction. This system consists of a first feed belt unit and a second feed belt unit for holding the corrugated board sheet with the first feed belt unit, which are disposed between every adjacent two printers; the first feed belt unit consisting of a first conveyor belt which is fixed with respect to the sheet forwarding direction and a second conveyor belt which can be shifted forward and backward with respect to the sheet forwarding direction; wherein the second conveyor belt is designed to be shifted, when the printing cylinder is ascended or descended to be spaced from the press roll, to advance to a position closer to the printing cylinder in the printer.

Abstract: A method and apparatus is provided for effecting semi-closed loop positioning of a work piece, such as corrugated-board, which corrects for inherent tolerance errors in the apparatus. A controller operates a processing device, for example a slotter, a positioning device and a position measuring device. The processing device and the work piece are positioned relative each other to align the processing device with a target position on the work piece defined by a target position value. The measuring device is then used to determine the initial actual position value of the processing device relative to the work piece. A processing size is determined and tested to find whether the size is within a given tolerance. If the size is outside the tolerance, fine adjustments are made to reposition the work piece. Once the position of the processing device is within tolerance, the measuring device measures the position of the processing device to determine a corrected actual position value.