Abstract: A blank feeding apparatus for feeding blanks one after another from a stack of blanks to the next processing rolls. Blanks are pushed by kickers attached to an endless conveyor. The motor for driving the conveyor is electronically controlled so that one cycle of kicker operation will be completed while the processing rolls make a full rotation, said one cycle including the acceleration tuned-run and deceleration steps.

Abstract: A tool positioning apparatus which is adapted to position by numerical control a plurality of pairs of tools attached to a pair of parallel shafts so that longitudinal slits, scores or the like may be produced along a web of board such as corrugated board conveyed through between said pair of shafts is provided with a tool positioning apparatus, said apparatus comprising tool feed control devices which are provided correspondingly to the number of said pairs of tools and are movable respectively on a guide member disposed parallel to said shafts by driving motors which are numerically controlled by a positioning controller and which have shifters insertably engageable with pairs of tool holders corresponding thereto respectively on which said pairs of tools are fixed; and a moving device which enables said shifters to engage with and disengage from simultaneously said pairs of tool holders corresponding thereto respectively.

Abstract: A single facer for manufacturing single-faced corrugated board having a first corrugating roll and a second corrugating roll meshing with the first corrugating roll to form a nip for receiving a sheet medium to corrugate the same, the second corrugating roll being provided with radial conduits extending toward its periphery through which suction is applied for attracting and holding the corrugated medium onto the peripheral surface thereof. The outer ends of the conduits terminate in the bottoms of axially spaced circumferential grooves formed around the periphery of the second corrugating roll. Finger-like plates engage within the circumferential grooves to seal at least some of the conduits disposed in the portion of the second corrugating roll which is not lapped by the corrugated medium.

Abstract: A process and an apparatus for splicing a web of paper being continuously supplied without decelerating the machine speed and with a minimum of material loss.A new paper web is spliced to the old paper web with adhesive tape and the old paper is cut off just behind the spliced point by means of a plate member which cooperates with a fixed blade provided along the run of the spliced paper.

Abstract: This invention relates to an object locating apparatus which can be used for locations of various objects. The apparatus comprises a laser device capable of projecting a laser beam which serves as a mark of a predetermined position of an object to be located, a mechanism for holding and moving said laser device, means for driving said mechanism so as to move said laser device, and means for numerically controlling the drive means so as to stop said laser device at a predetermined position.

Abstract: A method for controlling the speed of a rotary cutter to cut a continuously ed web accurately into predetermined lengths. A desired cutting length and the circumference of the rotary cutter are preset. The web speed as detected is multiplied by a coefficient equal to the cutter circumference divided by the cutting length. The resultant signal is compared with the cutter speed as detected, and, if there is any difference, the cutter speed is corrected for accurate cutting.

Abstract: This invention relates to apparatus for piling up boards such as corrugated boards. More particularly, it relates to a board piling-up apparatus wherein boards, such as corrugated boards, which are individually fed lying flat or in the form of small bundles and which are erected by a hand in the course of the feed to thereby be collected in the erected posture, the collected boards are turned to be piled up, and the boards piled up are thereafter discharged.

Abstract: This invention relates to a method for preparing paper board having excellent wet tensile strength and compression strength, which comprises (a) having paper board impregnated or coated with a mixture of an unsaturated vinyl ester prepolymer having a molecular weight of 300 to 3000 and having at least one hydroxyl group at the .beta.-position with respect to an ester bond in the molecule with at least one monomer selected from the group of methylacrylate, ethylacrylate and butylacrylate in a mixing weight ratio of 10:90-40:60, and (b) irradiating the paper board having the resinous mixture with electrons to cure the resinous mixture.

Abstract: The present invention relates to a method for splicing paper rolls. More particularly, in a mill roll stand which rotatably supports two paper rolls in face to face, opposing relationship and which allows the respective position of the two paper rolls to be mutually replaced, the present invention relates to a method for splicing the fully wound paper roll, which is not yet pulled out, with paper roll which is being continuously pulled out by correctly combining the respective inside and outside portions of the roll paper.

Abstract: This invention relates to a board grouping apparatus wherein boards successively discharged from a rotary cutter which cuts a web, for example, a corrugated board web and which continuously, transversely feeds the boards of a suitable length onto a conveyor to group the boards on the conveyor in any suitable predetermined number of sheets.

Abstract: The present invention relates to an apparatus for discharging goods such as stacked-up boards of corrugated board, cardboard, pasteboard or plywood, or pallets loaded with such goods, from a conveyor means such that said goods or pallet may be immediately transferred onto a pallet or a transporter such as a forklift which is waiting at a location close to the discharge end of said conveyor means.

Abstract: A blank feeding machine having a pivoting frame provided with kickers to push up the blanks stacked thereon. It requires only a minimum amount of labor to feed the blanks e.g. to the hopper of a printer even if they are stacked in bundles with face up and down alternately. The machine also includes a mechanism for automatically discharging the blanks from the pivoting frame onto a belt conveyor if they are stacked in uniform orientation.

Abstract: The present invention relates to a method and apparatus for splicing paper rolls. More particularly, in a mill roll stand which rotatably supports two paper rolls in face to face, opposing relationship and which allows the respective position of the two paper rolls to be mutually replaced, the present invention relates to a method and apparatus for splicing the fully wound paper roll, which is not yet pulled out, with paper roll which is being continuously pulled out by correctly combining the respective inside and outside portions of the roll paper.

Abstract: This invention relates to a board piling apparatus whereby the boards such as for example corrugated cardboards delivered individually or in small bundles in a flatly laid state are raised up and collected and the collected boards are then turned about 90.degree. and stacked up in the form of a pile. This apparatus is particularly featured by incorporation of a board raising up device adapted for raising up the board which are fed in a flatly laid state.

Abstract: A paper roll diameter sensing device for use with a paper splicing apparatus is disclosed which gives the output signal when the diameter of an unrolled paper roll is reduced to a predetermined diameter so that the running paper web may be spliced to the leading end of a new paper roll.

Abstract: A paper splicing apparatus which splices the drawn-out portion of an exhausting paper roll with the binding surface of a new fully wound paper roll, which is being continuously rotated by using paper splicing rolls, wherein means are provided for automatically detecting the end of the old paper roll being drawn-out and the beginning end of the new or fresh paper roll which is being rotated in a fully wound form. The paper rolls are supported by a pair of shafts rotatably mounted on a pair of arms supported by a supporting stand.