An automatic electrode supply apparatus configured to automatically supply an electrode in various processes for manufacturing a secondary battery includes a first chuck splicing unit including a splicing portion having a traveling electrode located thereon and a second chuck splicing unit including a splicing portion having a standby electrode located thereon, wherein each of the first and second chuck splicing units includes an edge position control (EPC) sensor configured to measure the position of the edge of a corresponding one of the traveling electrode and the standby electrode in order to prevent distortion or fracture defect of the electrode due to positional deviation between the traveling electrode and the standby electrode, and an automatic electrode supply method using the same.

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.

Provided is an automatic coiled material switching device, which comprises a machine table (8), a left unwinding device (81), a right unwinding device (82) and a rotatory cutting device (83); wherein the machine table is provided with a left auxiliary roller (84), a right auxiliary roller (85) and a plurality of fixed rollers; the rotary cutting device comprises a bearing seat (1), a bearing (11) arranged on the bearing seat, a rotating main body (2) arranged on the bearing, a rotating mechanism for driving the rotating main body to rotate on the bearing seat, a turning mechanism for driving the bearing seat to turn around, and a driving mechanism; the rotating main body comprises an upper part (21) and a lower part (22); a gap (23) for allowing a material to pass through is formed between the upper part and the lower part; and the rotating body is provided with a pressing mechanism for compressing the material and a cutting mechanism for cutting the material. The automatic coiled material switching device implements the automatic switching of material belts of the left unwinding device and the right unwinding device by arranging the rotating main body, rotating mechanism, the turning mechanism, the driving mechanism, the pressing mechanism and the cutting mechanism.

In some examples, a roll unwinder for a flying roll change includes a roll station for receiving a first material roll to be unwound, and a roll station for receiving a second material roll to be unwound after a roll change has occurred. A cut-off tool can sever a first web unwound from the first material roll, and includes a pressing element, to press the web against the outer surface of the second material roll. A supporting device can be transferred from an idle state into a working state in which the supporting device supports the web to be unwound, at least at the time of the severing process. The supporting device supports the web in a web path upstream from the cut-off tool. A receiving unit at a frame that carries the cut-off tool is movably mounted in the stand of the roll unwinder.

A bag-making and packaging machine includes a film supply unit that supplies film to a bag-making and packaging unit. The film supply unit has a film roll holding unit that rotatably holds a first film roll, a film temporary placement member on which a vicinity of a leading end portion of a first film wound into the first film roll is manually temporarily placed when attaching the first film roll to the film roll holding unit, a leading end portion detection sensor configured to detect that the leading end portion of the first film is positioned in a prescribed position, and a controller configured to control a rotating mechanism to convey the first film along a predetermined conveyance path until the leading end portion detection sensor detects that the leading end portion of the first film is positioned in the prescribed position.

A bag-making and packaging machine has a film supply unit that supplies film to a bag-making and packaging unit. The film supply unit has holding mechanisms each having a shaft that holds a film roll, a holding mechanism support frame supporting the holding mechanisms, a moving mechanism that rotates the holding mechanism support frame to move each holding mechanism between a film roll setting position and a film supply position, a splicing mechanism splicing a trailing end portion of the film of the roll of one of the holding mechanisms and a leading end portion of the film of the roll of another one of the holding mechanisms, and a film drawing mechanism that rotates the shafts of the holding mechanisms to draw the film independently from the film rolls attached to the shafts of the holding mechanisms and changes the drawing speed of the film during bag-making and packaging.

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.

An apparatus and method for automatic splicing of rolls of sleeve material used in various packaging applications. The disclosed system will automatically splice the leading end of a new roll onto the trailing end of the old roll in an overlapped configuration. The apparatus performs an automatic cut and splice operation resulting in a splice of the two film rolls with tape applied to both sides of the splice joint where the new roll overlaps the cut end of the prior roll.

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.

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.