Abstract: Elimination of play between rolls 13 and main bearings 12 in a non-forming area and forming of material to be formed in a forming area are repeated while play between a housing 10 for the rolls 13 and main bearing axle boxes 11 is always eliminated.

Abstract: A material to be formed, which is uncoiled by an uncoiler from a coil while controlled against meandering, is adjusted in inclination angle by an approach angle adjuster and guided into a separator-forming mill. The material to be formed is introduced and pressurized between rolls in the mill so as to continuously form a separator. The separator formed by the mill is discharged and tension controlled by a pinch roll device with opposite widthwise ends of the separator being pinched. The separator discharged by the pinch roll device is cut without stopping the same by a flying shear at portions with no passages formed.

Abstract: A cell electrode plate is constituted by band-like core member made of metal foil and a plurality of sheets of electrode active material applied discontinuously on and longitudinally of at least one of upper and lower surfaces of the core member, the mutually adjacent sheets of the electrode active material having mutually different end positions widthwise of the core member. Thereby, an increase in worn amount of surfaces of press rolls is prevented when the cell electrode plate is pressed by a roll press machine with the press rolls so as to prolong the service life of the press rolls. Thus, the number and/or amount of grinding the press rolls is reduced to reduce the roll maintenance cost and enhance production efficiency.

Abstract: A cell electrode plate is constituted by band-like core member made of metal foil and a plurality of sheets of electrode active material applied discontinuously on and longitudinally of at least one of upper and lower surfaces of the core member, the mutually adjacent sheets of the electrode active material having mutually different end positions widthwise of the core member. Thereby, an increase in worn amount of surfaces of press rolls is prevented when the cell electrode plate is pressed by a roll press machine with the press rolls so as to prolong the service life of the press rolls. Thus, the number and/or amount of grinding the press rolls is reduced to reduce the roll maintenance cost and enhance production efficiency.

Abstract: A continuous press apparatus presses an electrode band plate having a band-shaped metal foil collector on which an electrode active material is formed at intervals in a longitudinal direction. The apparatus includes a pair of press rollers, gap adjusting means for adjusting a gap between the press rollers, detecting means for detecting that a rear end of the electrode active material portion arrives at the position between the press rollers, and the gap adjusting means adjust the gap between the press rollers in response to the detection.

Abstract: Elimination of play between rolls 13 and main bearings 12 in a non-forming area and forming of material to be formed in a forming area are repeated while play between a housing 10 for the rolls 13 and main bearing axle boxes 11 is always eliminated.

Abstract: A cell electrode plate is constituted by band-like core member made of metal foil and a plurality of sheets of electrode active material applied discontinuously on and longitudinally of at least one of upper and lower surfaces of the core member, the mutually adjacent sheets of the electrode active material having mutually different end positions widthwise of the core member. Thereby, an increase in worn amount of surfaces of press rolls is prevented when the cell electrode plate is pressed by a roll press machine with the press rolls so as to prolong the service life of the press rolls. Thus, the number and/or amount of grinding the press rolls is reduced to reduce the roll maintenance cost and enhance production efficiency.

Abstract: A cell electrode plate is constituted by band-like core member made of metal foil and a plurality of sheets of electrode active material applied discontinuously on and longitudinally of at least one of upper and lower surfaces of the core member, the mutually adjacent sheets of the electrode active material having mutually different end positions widthwise of the core member. Thereby, an increase in worn amount of surfaces of press rolls is prevented when the cell electrode plate is pressed by a roll press machine with the press rolls so as to prolong the service life of the press rolls. Thus, the number and/or amount of grinding the press rolls is reduced to reduce the roll maintenance cost and enhance production efficiency.

Abstract: A cell electrode plate is constituted by band-like core member made of metal foil and a plurality of sheets of electrode active material applied discontinuously on and longitudinally of at least one of upper and lower surfaces of the core member, the mutually adjacent sheets of the electrode active material having mutually different end positions widthwise of the core member. Thereby, an increase in worn amount of surfaces of press rolls is prevented when the cell electrode plate is pressed by a roll press machine with the press rolls so as to prolong the service life of the press rolls. Thus, the number and/or amount of grinding the press rolls is reduced to reduce the roll maintenance cost and enhance production efficiency.

Abstract: Even when a cell electrode plate with broader width is press formed to enhance bulk density of electrode active material, it is made possible to positively and reliably provide a high-quality cell electrode plate with good productivity. From upstream to downstream in a travel direction of a cell electrode plate including a core member with electrode active material applied thereon, an uncoiler, a tension applicator, a four-high mill type roll press device, a thickness detector, a tension applicator and a coiler are arranged in the order named.

Abstract: A material 1A to be formed, which is uncoiled by an uncoiler 40 from a coil 1B while controlled against meandering, is adjusted in inclination angle by an approach angle adjuster 50 and guided into a separator-forming mill 60. The material to be formed is introduced and pressurized between rolls in the mill 60 so as to continuously form a separator 1. The separator 1 formed by the mill 60 is discharged and tension controlled by a pinch roll device 70 with opposite widthwise ends of the separator being pinched. The separator 1 discharged by the pinch roll device is cut without stopping the same by a flying shear 80 at portions with no passages formed.

Abstract: A magnesium alloy hot rolling method includes: a first rolling step in which a magnesium plate (M0, M1) is rolled reciprocatingly between an upstream heating furnace (2) which is located on an upstream side of a rolling mill (1) and which heats the magnesium plate (M0, M1), and a upstream heating furnace (3) which is located on a downstream side of the rolling mill (1) and which heats the magnesium plate (M0, M1); and a second rolling step in which the temperature of respective end portions of the magnesium plate (M0, M1) on both the upstream and downstream sides is maintained while the magnesium plate (M0, M1) is being rolled reciprocatingly between an upstream temperature maintaining apparatus (5) which transports the heated magnesium plate (M0, M1) while maintaining the temperature thereof, and a downstream temperature maintaining apparatus (6) which transports the heated magnesium plate (M0, M1) while maintaining the temperature thereof.

Abstract: A recoiling facility for a magnesium alloy sheet is provided with: an unwinder which is able to unwind a coil material formed by winding magnesium alloy onto a fixed mandrel; a heating furnace which heats to a predetermined temperature the magnesium alloy sheet which has been unwound from the coil material; a trimmer which trims both side edges of the sheet; and a winder which rewinds the magnesium alloy sheet. According to the present invention, it is possible to rewind a coil material formed by winding a magnesium alloy sheet onto a fixed mandrel and remove the fixed mandrel, and to perform leveling and trimming on crack portions and shape defect portions in width end portions of a plate that have been generated by multi-pass rolling so as to manufacture a high-quality product coil.

Abstract: In a magnesium alloy hot rolling apparatus in which winders that are able to apply heat to and then maintain the temperature of a magnesium alloy sheet while this sheet is in a coiled state are installed on both entry and exit sides of a rolling mill, and in which the magnesium alloy sheet undergoes a sequential thickness reduction via a plurality of reverse rollings, the rolling mill is provided with working rollers and back-up rollers whose surface temperature can be heated to a particular fixed temperature and then maintained at this temperature. According to the present invention, it is possible to prevent any deterioration in the quality of a product which is caused by temperature variations during the hot rolling of the magnesium alloy sheet, and it is possible to improve the yield and increase productivity.

Abstract: A cell electrode plate is constituted by band-like core member made of metal foil and a plurality of sheets of electrode active material applied discontinuously on and longitudinally of at least one of upper and lower surfaces of the core member, the mutually adjacent sheets of the electrode active material having mutually different end positions widthwise of the core member. Thereby, an increase in worn amount of surfaces of press rolls is prevented when the cell electrode plate is pressed by a roll press machine with the press rolls so as to prolong the service life of the press rolls. Thus, the number and/or amount of grinding the press rolls is reduced to reduce the roll maintenance cost and enhance production efficiency.

Abstract: A cell electrode plate in which at least one of opposite widthwise ends of longitudinally discontinuous exposed portions with no coatings made of electrode active material on a core member made of metal foil includes pass-by transition portions for press rolls, the transition portions having a thickness substantially the same as that of the coatings. As a result, without complicating a production line, a core member is prevented from being broken and the production line is operated smoothly so as to attain improved productive efficiency and reduced equipment expenses.

Abstract: Even when a cell electrode plate with broader width is press formed to enhance bulk density of electrode active material, it is made possible to positively and reliably provide a high-quality cell electrode plate with good productivity. From upstream to downstream in a travel direction D of a cell electrode plate 10 comprising a core member with electrode active material applied thereon, an uncoiler 1, a tension applicator 3, a four-high mill type roll press device 4, a thickness detector 5, a tension applicator 6 and a coiler 9 are arranged in the order named.

Abstract: A cell electrode plate in which at least one of opposite widthwise ends of longitudinally discontinuous exposed portions with no coatings made of electrode active material on a core member made of metal foil includes pass-by transition portions for press rolls, the transition portions having a thickness substantially the same as that of the coatings. As a result, without complicating a production line, a core member is prevented from being broken and the production line is operated smoothly so as to attain improved productive efficiency and reduced equipment expenses.

Abstract: A material 1 to be shaped is reduced and formed by bringing dies with convex forming surfaces, when viewed from the side of the transfer line of the material 1, close to the transfer line from above and below the material 1, in synchronism with each other, while giving the dies a swinging motion in such a manner that the portions of the forming surfaces of the dies, in contact with the material 1, are transferred from the upstream to the downstream side in the direction of the transfer line.

Abstract: A material 1 to be shaped is reduced and formed by bringing dies with convex forming surfaces, when viewed from the side of the transfer line of the material 1, close to the transfer line from above and below the material 1, in synchronism with each other, while giving the dies a swinging motion in such a manner that the portions of the forming surfaces of the dies, in contact with the material 1, are transferred from the upstream to the downstream side in the direction of the transfer line.