Installation method carbide elements in the case of studs tire vehicles
(57) Abstract:In the installation method carbide elements in the case of studs carbide element freely introduced and fixed in the housing bore of the housing. The body is heated to a predetermined temperature and plastically deform it in radial directions, for example, by rolling, after which the spike is cool. Upon cooling, there is a thermal compression body and the carbide element, but since the case is manufactured from a material with a large coefficient of linear expansion than the carbide element, the compression housing with cooling will be more than the item, and the result is a dense, with an interference fit connection. The method provides a solid and reliable connection. 3 Il., table 1. The invention relates to tire production, in particular the production of studs tires of vehicles.Known installation method conical carbide cores in the shell of studs by placing the core a large base for the deaf hole shell placed in the container, securing it to the shell by the action of mechanical force on his butt and odnovremenno way requiring great mechanical effort often leads to mechanical damage or destruction of the core, which increases the percentage of defects and reduces the resistance of studs in the course of their operation.Known installation method carbide elements in the studded tire vehicles, which consists in the free introduction of the carbide element in the housing bore housing the cleat and secure it there with the help of a special adhesive compositions /SU 1507592 A1, 1989/.However, this method requires the use of additional materials for degreasing, Kleene and other technologically complex and inefficient.The aim of the invention is to increase the efficiency and productivity of the installation process, the carbide elements in the body studs and improving the strength and reliability of the carbide element with the body.This goal is achieved by the fact that the method of installation of carbide elements in studded vehicles, which consists in the free introduction of the carbide element in the housing bore housing the cleat and fasten it there, fixing is performed by heating the enclosure to a predetermined temperature is sevanam, then cooled to the initial temperature.If you use carbide element is conical in shape, it is introduced into the housing bore a large base.In Fig. 1 - core and casing before connection;
in Fig. 2 - core is introduced into the body;
in Fig. 3 - core fixed in the case;
Installation method carbide elements in the case of studs tires of vehicles is free with the introduction of gap carbide element 1 in a blind hole of the housing 2 and pinning him there, for which the building is heated by one of known methods, such as gas flame, electric-contact method, etc. While the carbide element is heated by the body and is their thermal expansion. After heating the body of plastically deform in the radial direction to its axis by rolling up tight, no gap, embracing the carbide element material body.After this spike is cooled to the initial temperature. Upon cooling, there is a thermal compression body and the carbide element, but because the body is manufactured from a material with a large coefficient of linear expansion (steel) than tverdogo dense, the interference fit connection.The parameters of such a process a particular thorn in the table.The power calculated by the formula
p Installation method carbide elements in the case of studs, wherein the carbide element freely introduced and fixed in the housing bore of the housing, wherein the housing is heated to a predetermined temperature and plastically deform it in radial directions, for example, by rolling, after which the spike is cool.
FIELD: tire industry; production an element of a pneumatic tire based on rubber mixtures.
SUBSTANCE: the invention is pertaining to the field of the tire industry and may be used at production of an element of a pneumatic tire based on rubber mixtures, two of which one form a tire tread. The method of production of an element based on the rubber mixtures and intended for production of a pneumatic tire provides for extrusion of at least two layers of the rubber mixtures with the help of the main extruder supplied at least with two extrusive feed screws having accordingly the channels of outflow opening into one and the same hole of then extruder limited by the first and the second walls of a plate. Then using extrusion simultaneously through two layers interpose at least one insert made out of the rubber mixture with the help of a microextruder nozzle. The nozzle of the microextruder is pressed to the second wall of the plate of the main extruder. The device for extrusion of the rubber mixtures has the main extruder with an extrusion head with at least two outflow channels for each of two rubber mixtures. The channels are going in one and the same hole of the extruder, through which the two rubber mixtures are extruded. The hole of extrusion is limited by the first and the second walls of the plate. The device contains at least one microextruder intended for extrusion of the third rubber mixture. The head of the microextruder on its end is supplied with a nozzle, which is inserted in the first wall of the plate of the main extruder so, that the nozzle is placed in the hole of the main extruder and pressed to the second wall of the plate of the main extruder so, that to feed the third rubber mixture into a profiled structure, made out of the rubber mixtures coming out of the main extruder. The invention allows to produce elements of the tire out of rubber mixtures.
EFFECT: the invention ensures production of elements of the tire out of rubber mixtures.
7 cl, 3 dwg
FIELD: tire industry.
SUBSTANCE: invention can be used at fitting antislip studs on vehicle tires to provide possibility of running over-ice-coated pavement. Method of manufacture of studded tire containing running belt with radial outer surface provided with great number of metal studs partially projecting from said outer surface comes to the following steps: first green tire is manufactured and studs are fitted in sockets of curing mould, then green tire is placed in said curing mould, is covered and green tire is cured after which tire is taken out of curing mould. Pitch of studs in mould sockets is provided by setting stud holding device keeping great number of studs inside mould, and studs are pushed out of said device into sockets. Semiautomatic stud setting process guarantees safety in manufacture and provides high efficiency.
EFFECT: provision of high efficiency of manufacture of studded tires.
14 cl, 7 dwg
FIELD: rubber industry; pneumatic tires.
SUBSTANCE: invention relates to method designed for manufacture of pneumatic tire and device for implementing the method. Proposed method includes coextrusion of at least two layers of rubber mixes A, B means of main extruder and introduction through said layers at least one insert of rubber mix C by means of nozzle of mini-extruder. Main extruder contains die head with at least two discharge channels for delivery of rubber mixes A, B connected with extrusion hole limited by first and second walls. Die head of mini-extruder is provided with nozzle on end to deliver rubber mix C, passing through two discharge channels of main extruder so that rubber mix C is introduced into rubber mixes A, B at inlet of extrusion hole.
EFFECT: possibility of making pneumatic tire with at least two layers of rubber mixes which do not conduct current and insert made of current-conducting rubber introduced in preset amounts.
9 cl, 3 dwg