摘要:
A stitching roller is provided for stitching a strip, in particular a continuous strip for strip-winding. The stitching roller includes a roller body that is rotatable about a roller axis. The roller body comprises a circumferential member and a support member provided with a connection end that is connected to the circumferential member and a base end for coupling of the stitching roller to a rotation shaft. The support member is made of a flexible material that allows for the circumferential member to tilt relative to the base end from a neutral orientation into a tilted orientation. The support member includes one or more reinforcements that reinforce the axial stiffness of the support member from the outer radius towards the inner radius.
摘要:
Disclosed are to a transfer apparatus and a method for transferring plies onto a carcass package on a tire building drum. The transfer apparatus includes a transfer ring with first ring segments and a frame that extends in a circumferential direction about a central axis for holding the first ring segments in first angular positions distributed in the circumferential direction along the frame, wherein the first ring segments are movable relative to the frame in a radial direction from a first radial distance to a second radial distance from the central axis that is smaller than the first radial distance. The transfer apparatus further includes a first rolling device that is positionable in a second angular position interposed between the first angular positions, and a second ring segment that is positionable in the second angular position at the second radial distance from the central axis.
摘要:
The invention can surely accomplish lamination without the generation of voids in building a tire constructed to comprise a plurality of rubber members for a tire when a ribbon-shaped rubber strip (R) is spirally wound and laminated, and uses holding rolls (30) and two sets of stitching rolls (40a), (40b) arranged in parallel with a center of a rubber strip width (W) therebetween to enable performing of an independent pressing motion, such that the rubber strip (R) is pressed and bonded by the holding rolls (30) in a position, in which the rubber strip (R) is wound, and the stitching roll (40a) or (40b) positioned fore in an advancing direction of traverse movement, out of the two sets, is caused to perform a pressing motion in a regional part just after the press whereby a fore part of the rubber strip in the advancing direction is pressed and bonded.
摘要:
A transfer assembly and a method for transferring tire components to a building drum, wherein the transfer assembly is provided with a first transfer drum including a circumferential surface and a cylindrical transfer drum volume, wherein the first transfer device further includes a first stitcher unit for stitching the first tire component when the first tire component has been transferred by the first transfer drum onto the building drum, wherein the first stitcher unit includes a stitching element for applying pressure to the first tire component and a stitcher deployment actuator for moving the stitching element with respect to the first transfer drum between a retracted position in which the stitching element is located within the transfer drum volume of the first transfer drum and an extended position in which the stitching element is located outside of the transfer drum volume.
摘要:
A process and an apparatus for building tires for vehicle wheels wherein the process includes the step of assembling components of elastomeric material on a forming support, in which at least one of the components of elastomeric material is manufactured by the steps of: i) dispensing a continuous elongated element of elastomeric material; ii) applying the continuous elongated element in the form of coils disposed in side by side relationship or at least partly superposed, wound up on the forming support, so as to form the at least one component of elastomeric material of the tire; iii) exerting a first pressure on a central region of a portion of the continuous elongated element applied onto the forming support; and iv) exerting a second pressure on side regions of the portion of the continuous elongated element applied onto the forming support.
摘要:
The invention can surely accomplish lamination without the generation of voids in building a tire constructed to comprise a plurality of rubber members for a tire when a ribbon-shaped rubber strip (R) is spirally wound and laminated, and uses holding rolls (30) and two sets of stitching rolls (40a), (40b) arranged in parallel with a center of a rubber strip width (W) therebetween to enable performing of an independent pressing motion, such that the rubber strip (R) is pressed and bonded by the holding rolls (30) in a position, in which the rubber strip (R) is wound, and the stitching roll (40a) or (40b) positioned fore in an advancing direction of traverse movement, out of the two sets, is caused to perform a pressing motion in a regional part just after the press whereby a fore part of the rubber strip in the advancing direction is pressed and bonded.
摘要:
A stitcher (1) for connecting strips of rubber material (4, 5) into a substantially continuous strip according to this invention comprises a surface (3), a stitching head (6) placed over it having a stitch unit (7) for stitching the strips of rubber material together along a stitch line, which stitch line includes an angle α having a longitudinal direction (L) of the continuous strip, a drive mechanism for driving a relative movement of the stitching head with respect to the surface along a first (X) and a second (Y) direction, wherein the second direction is oriented transverse to the first direction, and a control device (11) for controlling the drive mechanism such that the stitch unit follows the stitch line. In one embodiment the stitching head is rotatably connected to the drive mechanism wherein the axis of rotation extends transverse to the surface. The stitching head furthermore comprises a wheel (15) that is placed at a distance from the axis of rotation, wherein the wheel with its tread abuts the surface.
摘要:
A machine and method for applying a tread to a carcass of a tire; the machine has a rotary drum supporting the carcass, a feed conveyor for feeding the tread to the rotary drum, a pressure roller contacting the tread, an actuating device for pushing the pressure roller against the tread with a force of adjustable intensity, and a control unit for regulating the intensity of the force as a function of an error variable calculated as the difference between the length of the remaining portion of the circumference of the carcass, and the length of the remaining portion of the tread; and the control unit regulates the intensity of the force by means of a proportional control block having a gain varying as a function of the value of the error variable and as a function of the rate of change of the error variable.
摘要:
A method for controlling a manufacturing process of components of a tyre for vehicle wheels, wherein at least one elongated element fed by a dispensing member is distributed onto a forming support by means of at least one pressing member acting on the at least one elongated element along a pressing direction. The method includes the steps of substantially continuously detecting the value of a characteristic quantity indicative of the displacement of the at least one pressing member along the pressing direction, comparing the detected value of the characteristic quantity with a threshold value and generating a warning signal when the detected value of the characteristic quantity exceeds the threshold value. Such a control method allows the presence of possible deposition anomalies to be identified right from the deposition step of the elongated elements on the forming support so as to ensure ever higher quality levels in tyres manufactured through continuous processes.
摘要:
The invention provides a stitcher and a method of stitching a helical splice having an angle φ on material mounted on a drum, the method comprising the steps of: rotating the drum at a constant speed U, traversing a stitcher assembly at a constant velocity V, wherein the stitcher assembly velocity is coordinated with the drum speed so that the stitcher engages the ply along the helical splice. The invention further provides a stitcher having a roller rotatably mounted to a support frame having a longitudinal axis, wherein the roller is pivotally mounted to the support frame so that the roller can pivot about the longitudinal axis of the handle.