A method for manufacturing a belt-shaped cord member by cutting a rubber topped fabric produced by covering a topping rubber on an interdigitated fabric formed by interweaving many warp textile cords and few wefts to a predetermined width, comprising; an interdigitated fabric forming step of arranging a cord having conductivity for every predetermined number of the many warp textile cords which is then interwoven with the weft yarn, a rubber topped fabric producing step of topping rubber on the front and back surfaces of the interdigitated fabric, and a cutting step of cutting the produced rubber topped fabric by every predetermined number of the textile cords, wherein, in the cutting step, the rubber topped fabric is cut along the textile cord in which a cord having conductivity is arranged, after the position of the textile cords is specified by energizing the rubber topped fabric.

To accurately cut a ply for a tire. It is a cutting device 1 for cutting a ply 10 for a tire in which a plurality of cords 12 parallelly arranged at fixed pitches are coated with an unvulcanized topping rubber 10. It has a pitch increasing means 2 for increasing the pitches of the cords 12 by pressing the ply 10 from a second surface 10b side to a first surface 10b side of the ply 10 so as to stretch the ply 10 toward the first surface 10a side; and a ply cutting means 3 disposed on the first surface 10a side of the ply 10, for cutting the stretched portion of the ply 10 along the cords 12.

The method comprises steps during which, by making the cylindrical form rotate in a first circumferential direction, the ply is deposited until the front edge and performs a complete rotation. A point of penetration is marked on the ply on a cutting line, and a cutting blade that is driven in translation is made to penetrate between two wires placed on the cutting line at the point of penetration. The cylindrical form is made to rotate in an opposite second circumferential direction while displacing the cutting blade in a first transverse direction until the cutting blade is disposed at a predetermined and non-zero distance from a first selvedge. Without retracting the cutting blade from the wire gap, the cylindrical form is made to rotate in the first circumferential direction while displacing the cutting blade in an opposite second transverse direction until the cutting blade emerges at a second selvedge.

The present invention relates to a method for manufacturing webs (1) that are intended to be involved in the makeup of a reinforcing ply (2) for a pneumatic tyre (20), said method comprising a preparation step (a), during which a plurality of straight-thread strips (7, 107, 207), which are each formed of a plurality of continuous reinforcing threads (4) that are embedded in a layer of rubber (5), are prepared, a butt-joining step (b), during which said straight-thread strips (7, 107, 207) are butt joined in pairs to form a straight-thread ply (3), then a cutting step (c), during which the straight-thread ply (3) is inserted into a cutter (8) and the straight-thread ply (3) is severed transversely so as to form webs, wherein, in said method, the frontal width (W3) of the straight-thread ply (3) that is produced during the butt-joining step (b) and then inserted into the cutter (8) is equal to or greater than 50%, equal to or greater than 75%, equal to or greater than 80%, or even equal to or greater than 90%, of the cutter inlet width (W8), whereas the widest frontal width (W7, W107, W207) of the straight-thread strips is less than or equal to 50%, less than or equal to 40%, less than or equal to 25%, less than or equal to 10%, or even less than or equal to 5%, of said cutter inlet width (W8).

A topping sheet forming method includes: a feeding and division step of feeding a textile original fabric, obtained by weaving longitudinally aligned tire cords into a cord fabric by use of weft yarns, and cutting off the weft yarns in predetermined widthwise positions to divide the textile original fabric into a plurality of narrow textile original fabrics; a calender step of topping, with unvulcanized rubber, at least one surface of one narrow textile original fabric out of the divided narrow textile original fabrics; and a wind-up step of winding up the other narrow textile original fabrics out of the divided narrow textile original fabrics.

A topping sheet forming method includes: a feeding and division step of feeding a textile original fabric, obtained by weaving longitudinally aligned tire cords into a cord fabric by use of weft yarns, and cutting off the weft yarns in predetermined widthwise positions to divide the textile original fabric into a plurality of narrow textile original fabrics; and a topping step of topping at least one surface of each of the narrow textile original fabrics with unvulcanized rubber.

A method for manufacturing a belt-shaped cord member by cutting a rubber topped fabric produced by covering a topping rubber on an interdigitated fabric formed by interweaving many warp textile cords and few wefts to a predetermined width, comprising; an interdigitated fabric forming step of arranging a cord having conductivity for every predetermined number of the many warp textile cords which is then interwoven with the weft yarn, a rubber topped fabric producing step of topping rubber on the front and back surfaces of the interdigitated fabric, and a cutting step of cutting the produced rubber topped fabric by every predetermined number of the textile cords, wherein, in the cutting step, the rubber topped fabric is cut along the textile cord in which a cord having conductivity is arranged, after the position of the textile cords is specified by energizing the rubber topped fabric.

An apparatus for counting textile cords in a tire reinforcement belt by cutting the reinforcement belt into a plurality of belt units and successively measuring the number of textile cords in each belt unit is provided. The apparatus includes a feed roller having wound therearound a reinforcement belt on which textile cords are arranged along a longitudinal direction of the reinforcement belt; one or more take-up rollers configured to collect the reinforcement belt from the feed roller; a plurality of guide rollers interposed between the take-up rollers and configured to support a top surface or a bottom surface of the reinforcement belt; one or more light sources, each configured to emit a line of light onto a surface of the reinforcement belt that is passing around the guide rollers; and one or more image sensors configured to capture images reflected off the surface of the reinforcement belt.

To accurately cut a ply for a tire. It is a cutting device 1 for cutting a ply 10 for a tire in which a plurality of cords 12 parallelly arranged at fixed pitches are coated with an unvulcanized topping rubber 10. It has a pitch increasing means 2 for increasing the pitches of the cords 12 by pressing the ply 10 from a second surface 10b side to a first surface 10b side of the ply 10 so as to stretch the ply 10 toward the first surface 10a side; and a ply cutting means 3 disposed on the first surface 10a side of the ply 10, for cutting the stretched portion of the ply 10 along the cords 12.

(N+1) band-like cut members are manufactured by cutting a band-like member N times along the length direction of the reinforcing cords. At such time, cutting positions are set at locations in the width direction of the band-like member from a first end toward a second end, and cuts are made in the band-like member on the basis of the cutting positions. Setting the cutting positions includes: a step A in which cutting positions of the band-like member are set M times (where M is a natural number less than N) for every fixed first number of reinforcing cords; and a step B in which a second number of the reinforcing cords is set within an allowable number range, and the cutting positions are set at (NM) locations using the second number such that band-like cut members having the second number of reinforcing cords are continuously produced.