Abstract: A sheet supply device and a sheet supply method include a guide roller disposed at an opposite side of a standby side roll with respect to a tangential line to an outer peripheral surface of the standby side roll at a pressing position in a state in which a pressing roller is pressed against a pressing position, and configured to guide a sheet from the pressing roller in a direction away from the standby side roll. Furthermore, the second guide roller is fixed to a moving unit so as to be configured to approach and move away from the standby side roll together with the pressing roller.

Abstract: A controller includes: an adhesion member position determination unit that determines a position of an adhesion member in a rotation direction of a roll on the basis of the result of detection from an adhesion member detector in a state in which the roll has been rotated by a shaft control unit; and an outer diameter determination unit that determines an outer diameter of the roll in a portion where the adhesion member is positioned, the determination being performed on the basis of the result of detection from an outer diameter detector in a state in which driving of shaft drive sources are controlled by the shaft control unit such that the adhesion member is positioned within a detection range of the outer diameter detector on the basis of the position of the adhesion member determined by the adhesion member position determination unit.

Abstract: A conveyance device is capable of preventing a remaining portion of a cut sheet from being caught in a conveyance path. A sheet supply device includes an urging mechanism capable of switching between a supply state of applying force in a direction away from a pressing position to an upstream part, in a conveyance direction, of a cut position of a sheet of a supply side roll, the cut position being cut by a cutter, and a stopped state of stopping application of the force, and a controller configured to switch the urging mechanism from the stopped state to the supply state in accordance with a timing when the sheet is cut by the cutter.

Abstract: A controller includes a shaft control unit that controls driving of a shaft drive source such that a standby side roll is rotated, and a unit control unit that presses a pressing roller against an outer peripheral surface of the standby side roll via a sheet of a supply side roll by performing torque control on a unit drive source in a state in which the pressing roller is positioned in an area from a control switching position to the outer peripheral surface of the standby side roll together with performing position control on the unit drive source in a state in which the pressing roller is positioned in an area farther away from the standby side roll than the control switching position away from the outer peripheral surface of the standby side roll by a preset distance while the standby side roll is rotated by the shaft control unit.

Abstract: Provided is a sheet supply device capable of reliably joining sheets by accurately transmitting force for joining the sheets. A joining mechanism includes a pressing roller that presses a sheet of a supply side roll against the outer peripheral surface of a standby side roll; and a moving unit that supports the pressing roller such that the pressing roller is configured to approach and move away from the standby side roll supported by a support shaft disposed at a splice position in the radial direction of the standby side roll. The moving unit supports the pressing roller such that the center of the pressing roller is movable on a straight line passing through the center of a rotation shaft and the center of the support shaft disposed at the splice position.

Abstract: A transportation device includes a transportation-side holder that holds a roll. A roll mounting section, a sheet supply device including a supporter that holds the roll in a state where the sheet is continuously feedable, and an intermediate processing device that performs processing set in advance on the roll are disposed within a moving range of the transportation-side holder. A controller controls the transportation device such that the transportation-side holder holds the roll on the roll mounting section, and the roll held by the transportation-side holder is conveyed to the supporter of the sheet supply device through the intermediate processing device.

Abstract: A controller includes a shaft control unit that controls driving of a shaft drive source such that a standby side roll is rotated, and a unit control unit that presses a pressing roller against an outer peripheral surface of the standby side roll via a sheet of a supply side roll by performing torque control on a unit drive source in a state in which the pressing roller is positioned in an area from a control switching position to the outer peripheral surface of the standby side roll together with performing position control on the unit drive source in a state in which the pressing roller is positioned in an area farther away from the standby side roll than the control switching position away from the outer peripheral surface of the standby side roll by a preset distance while the standby side roll is rotated by the shaft control unit.

Abstract: A sheet supply method includes an unwinding step of supplying a sheet to a downstream location at a predetermined conveyance speed and a joining step of joining the sheet from a first roll to the sheet of a second roll and cutting the sheet from the first roll at an upstream position of a joining section. In the joining step, the running speed of the sheet run from the first roll is made lower than the predetermined conveyance speed in the unwinding step, and different from a supply speed of the sheet from a supply part in the joining step. An accumulating mechanism decelerates or accelerates the sheet running to counterbalance an excess or a deficiency of the sheet which is caused by a speed difference between the running speed and the supply speed.

Abstract: A conveying device comprises: a plurality of holding mechanisms attached to a rotary shaft; a speed-changing mechanism which changes the angular speed of each of the plurality of holding mechanisms; a first cover extending from a first holding mechanism toward a second holding mechanism, such that the first cover covers a gap between the two holding mechanisms from an outside thereof in a radial direction of the rotating shaft; and a second cover extending from the second holding mechanism toward the first holding mechanism such that the second cover covers the gap from the outside thereof in the radial direction, and overlapping with the first cover. The two covers have lengths enough to be able to overlap with each other in the radial direction in a state in which the two holding mechanisms are furthest apart from each other.

Abstract: Provided are a sheet supply device and a sheet supply method capable of keeping the precision of a sheet separating operation constant regardless of differences in diameter dimensions of rolls. A second guide roller is disposed at an opposite side of a standby side roll with respect to a tangential line to the outer peripheral surface of the standby side roll at a pressing position in a state in which the pressing roller is pressed against the pressing position, and guides a sheet such that the sheet is guided from the pressing roller in a direction away from the standby side roll. Furthermore, the second guide roller is fixed to a moving unit so as to be configured to approach and move away from the standby side roll together with the pressing roller.

Abstract: Provided is a conveyance device capable of preventing a remaining portion of a cut sheet from being caught in a conveyance path. A sheet supply device includes an urging mechanism capable of switching between a supply state of applying force in a direction away from a pressing position to an upstream part, in a conveyance direction, of a cut position of a sheet of a supply side roll, the cut position being cut by a cutter, and a stopped state of stopping the supply of the force, and a controller that switches the urging mechanism from the stopped state to the supply state in accordance with a timing when the sheet is cut by the cutter.

Abstract: Provided is a sheet supply device capable of reliably joining sheets by accurately transmitting force for joining the sheets. A joining mechanism includes a pressing roller that presses a sheet of a supply side roll against the outer peripheral surface of a standby side roll; and a moving unit that supports the pressing roller such that the pressing roller is configured to approach and move away from the standby side roll supported by a support shaft disposed at a splice position in the radial direction of the standby side roll. The moving unit supports the pressing roller such that the center of the pressing roller is movable on a straight line passing through the center of a rotation shaft and the center of the support shaft disposed at the splice position.

Abstract: A roll conveyance device includes a transportation device including a roll holding shaft extending in a predetermined direction from a distal section of an arm to hold a roll such that the roll holding shaft is inserted into a core member of the roll; and a mounting section within a moving range of the roll holding shaft, the mounting section allowing the roll to be mounted in a state in which both axial ends of the core member of roll are open. The transportation device is configured to mount the roll on the mounting section, the roll holding shaft is to be pulled out from the core member of the roll mounted on the mounting section to a first side of an axial direction of the core member, and the roll holding shaft is to be inserted into the core member from a second side of the axial direction.

Abstract: A method for cutting at least an outermost film of rollstock across a width direction of a film, the rollstock formed by a film sheet rolled from base end to tip end, the method including: separation step of generating a gap between the inner peripheral film and the outer layer by separating first edge portion of the outer layer from the inner peripheral film in a radial direction of the rollstock, in a state where the outer layer is remained to be rolled as a part of the rollstock; step of displacing a portion of the outer layer defining the gap in a first width direction from the first edge portion to second edge portion in the width direction; and step of cutting the outer layer across the width direction during the displacement step, while the first cutter is moved from the first edge portion to the second edge portion.

Abstract: A method for removing outer layer of rollstock includes: first step of cutting rollstock's outermost circumferential film in a first cut portion, the rollstock formed by a film sheet rolled from base end to tip end and the tip end temporarily fixed to an outer circumferential surface; second step of cutting the film in a second cut portion closer to the base end than the first cut portion, a length from the tip end to the second cut portion being equal to or more than one round of the rollstock's outermost circumference; and step of discarding a first cut-film piece from the first cut portion to the tip end and a second cut-film piece from the first cut portion to the second cut portion by drawing the first and second pieces with a drawing device while driving an unwinding roller mounted with a hollow portion of the rollstock to rotate.

Abstract: The present invention includes a transportation device including a transportation-side holder that holds a roll. A roll mounting section, a sheet supply device including a supporter that holds the roll in a state where the sheet is continuously feedable, and an intermediate processing device that performs processing set in advance on the roll are disposed within a moving range of the transportation-side holder. A controller controls the transportation device such that the transportation-side holder holds the roll on the roll mounting section, and the roll held by the transportation-side holder is conveyed to the supporter of the sheet supply device through the intermediate processing device.

Abstract: The present invention includes: a transportation device including a roll holding shaft extending in a predetermined direction from a distal section of an arm to hold a roll in a state of being inserted into a core member of the roll; and a mounting section disposed within a moving range of the roll holding shaft, the mounting section allowing the roll to be mounted in a state where both ends of an axial direction of the core member of roll are open. The transportation device mounts the roll on the mounting section, the roll holding shaft is pulled out from the core member of the roll mounted on the mounting section to one side of an axial direction of the core member, and the roll holding shaft pulled out from the core member is inserted into the core member from the other side of the axial direction.

Abstract: A conveying device comprises: a plurality of holding mechanisms attached to a rotary shaft; a speed-changing mechanism which changes the angular speed of each of the plurality of holding mechanisms; a first cover extending from a first holding mechanism toward a second holding mechanism, such that the first cover covers a gap between the two holding mechanisms from an outside thereof in a radial direction of the rotating shaft; and a second cover extending from the second holding mechanism toward the first holding mechanism such that the second cover covers the gap from the outside thereof in the radial direction, and overlapping with the first cover. The two covers have lengths enough to be able to overlap with each other in the radial direction in a state in which the two holding mechanisms are furthest apart from each other.

Abstract: A method for cutting at least an outermost film of rollstock across a width direction of a film, the rollstock formed by a film sheet rolled from base end to tip end, the method including: separation step of generating a gap between the inner peripheral film and the outer layer by separating first edge portion of the outer layer from the inner peripheral film in a radial direction of the rollstock, in a state where the outer layer is remained to be rolled as a part of the rollstock; step of displacing a portion of the outer layer defining the gap in a first width direction from the first edge portion to second edge portion in the width direction; and step of cutting the outer layer across the width direction during the displacement step, while the first cutter is moved from the first edge portion to the second edge portion.

Abstract: A method for removing outer layer of rollstock includes: first step of cutting rollstock's outermost circumferential film in a first cut portion, the rollstock formed by a film sheet rolled from base end to tip end and the tip end temporarily fixed to an outer circumferential surface; second step of cutting the film in a second cut portion closer to the base end than the first cut portion, a length from the tip end to the second cut portion being equal to or more than one round of the rollstock's outermost circumference; and step of discarding a first cut-film piece from the first cut portion to the tip end and a second cut-film piece from the first cut portion to the second cut portion by drawing the first and second pieces with a drawing device while driving an unwinding roller mounted with a hollow portion of the rollstock to rotate.