摘要:
End portions of a sheet-shaped rubber member are manually and firmly joined together. A pair of opening/closing members is arranged to sandwich and move along the end portions. An opening/closing mechanism opens/closes the pair of opening/closing members between an open position and a closed position where the end portions are joined together. A pair of guiding rollers is provided to one opening/closing member and guides each of the end portions to a joining position. A pressing roller is provided to the other opening/closing member and presses each of the end portions onto the guiding roller. A pair of joining rollers is provided to the pair of opening/closing members, respectively, and sandwiches each of the end portions guided by the pair of guiding rollers. The joining rollers roll on each of the opposing end portions and abut and join the end portions to each other.
摘要:
Side portions of a plurality of strip-shaped members to be arranged on a drum are positioned accurately and joined with accuracy while sufficient joint strength is assured. The drum is rotated each time the strip-shaped member is arranged by arranging means, and a plurality of the strip-shaped members are sequentially arranged in a drum peripheral direction. The side portions of the adjacent strip-shaped members are joined by joining means so as to manufacture a constituent member of a tire. A joint portion whose thickness is relatively small is provided on one of the side portions of the strip-shaped member, and the plurality of strip-shaped members are arranged by overlapping the joint portion on one of the side portions and the other side portion. A width between the side portions is measured, the drum is rotated based on the measurement, and the positions of the side portions are matched.
摘要:
In an apparatus for affixing a tire component member, a capacity of a driving means for a traveling head is decreased, and start end positions of affixing the tire component member are aligned in a peripheral direction of a drum and a widthwise overlap amount between the tire component members is made constant as is expected, and also a cycle time is shortened, in which the apparatus comprises a traveling head 2 moving forward and rearward in an axial direction of a drum 1, a clamp means 9 pushing a front end portion of the tire component member 3 protruded ahead from the traveling head 2 onto the peripheral face of the drum, a cutting means 12 arranged at one end side of the drum apart from the clamp means 9, guide rolls 5 arranged on the traveling head 2 and specifying a widthwise position of the tire component member 3, and a chuck means pulling the tire component member 3 to the clamp means 9.
摘要:
A rubber-coated fabric 10 for a tire, obtained by rubber-coating a rattan blind woven stuff 14 in which wefts 11 and warps 12 made of tire cords 13 are woven into a rattan blind form. The wefts 11 have a break elongation of 4 to 30% and a break strength of 3 to 15 N.
摘要:
A tire (10) has a composite ply (40). The composite ply (40) has a primary ply (40A) reinforced with parallel inextensible cords (41) and a pair of ply extensions (40B) having synthetic cords (43). The method of manufacturing the tire (10) is described. The tire (10) can be made as a runflat type tire.
摘要:
A steel cord-rubber composite is provided, that has improved initial adhesion property and adhesion property against aging between the steel cord and the rubber composition with improved manufacturing cost efficiency. A steel cord-rubber composition composite includes a coating layer and a steel cord, and the coating layer includes an inner coating layer formed of a rubber composition containing a rubber component, a cobalt compound and sulfur and directly covering the steel cord, and an outer coating layer formed of a rubber composition of which contents of cobalt compound and sulfur are smaller than those of the inner coating layer and coating the outer portion of the inner coating layer.
摘要:
An apparatus for joining a carcass ply, which butt-joins a wind start end and a wind finish end of a carcass ply wound around a cylindrical drum, is disclosed. The apparatus comprises: a joining section for joining the ends of the carcass ply; and aligning sections for aligning the ends of the carcass ply during joining by the joining section, the joining section and the aligning sections being disposed below the cylindrical drum supported in a horizontal state.
摘要:
Side portions of strip-shaped members to be arranged on a drum are positioned and joined with accuracy while sufficient joint strength is assured. The drum is rotated each time the strip-shaped member is arranged by arranging means, and the strip-shaped members are sequentially arranged in a drum peripheral direction. The side portions of the adjacent strip-shaped members are joined by joining means so as to manufacture a constituent member of a tire. A joint portion is provided on one of the side portions of the strip-shaped member, and the strip-shaped members are arranged by overlapping the joint portion on one of the side portions and the other side portion. A width between both side portions of each strip-shaped member is measured, the drum is rotated based on the measurement result of the width, and the positions of the side portions to be overlapped and arranged are matched.
摘要:
A device for continuously sheathing a ply of threads, said ply being formed by an array of approximately mutually parallel threads. The device includes a thread guide, a coating chamber into which a first feed channel and a second feed channel run, which are independent of each other, connected to a first feed device and to a second feed device respectively and capable of delivering a first material and a second material under pressure and with a defined flow rate, and the outlets of which channels are placed above and below the plane of the ply of threads, and an output die. Pressure-measuring device, connected to a controller for controlling the pressure of each of the feed devices, are placed in the coating chamber facing and in line with each other, on either side of the plane of the ply and in the immediate vicinity of the outlet for the feed channels.
摘要:
A cord sheathing device for one or more cords (F) with a plastic or thermoplastic material, comprising guiding means (2) for the cord(s) arranged at the inlet of the device and leading to a central chamber (51) connected by a duct to extrusion means that can deliver the said material under pressure in the viscous condition, an outlet die (4) of given calibration section S1 for the sheathed cord(s), and at least one mobile die (12) with calibration section S2 smaller than the calibration section S1. Each mobile die (12) is moved in the travel direction of the cord(s) F by an actuator (13, 15, 17), passing through the central chamber (51), and having a passage (14) allowing the central chamber (51) to communicate with the interior space of the mobile die (12).