摘要:
Elongate tire-building equipment having circumference-defining apparatus wherein the circumference serves as a forming surface or as a circumference-engaging surface utilizes ramp members which are regularly disposed about the equipment centerline and upon which the circumference-defining apparatus is mounted for movement radially toward and away from the equipment centerline. A thrust plate and an actuator are mounted at the ends of the equipment for movement toward or away from one another along the equipment centerline, and an assembly of guide tracks and guide blocks are interposed between the ramp members and the thrust plate and between the ramp members and the actuator so that the movement of the thrust plate and the actuator toward and away from one another effects the movement of the ramp members radially toward and away from the equipment centerline by a relatively large amount.
摘要:
A roller assembly for use during tire construction includes a telescoping tube arrangement and a roller positioned thereabout. The telescoping tube arrangement has an inner tube section and an outer tube section and which can be adjusted in length to accommodate the width of the tire component under construction. The roller includes a cylindrical surface of a desired hardness which is positionable into engagement with the outer surface of the tire component under construction and which includes a plurality of roller sections which are positionable about the telescoping tube arrangement and in a side-by-side relationship with one another. In addition, each roller section defines a peripheral surface so that when the roller sections are positioned in a side-by-side relationship along the tube arrangement, the peripheral surfaces of the roller sections collectively provide the cylindrical surface of the roller.
摘要:
In accordance with one aspect of the present invention there is provided improved means for centering of a green vehicle tire carcass on a shaping drum. “Centering” as used herein and unless otherwise stated or obvious from the context of its use, includes positioning of the bead ring-containing. opposite ends of a carcass substantially equidistantly from the centerplane of the drum and substantially radially equidistant from, and substantially concentric about, the rotational axis of the drum. In one embodiment, the shaping drum includes first and second pluralities of lateral positioning shoes disposed about the outer circumference of thedrum, these pluralities of shoes being disposed on opposite sides of the lateral centerplane of the drum, and first and second pluralities of bidirectional (radial and lateral) positioning wheels, the pluralities of wheels also being disposed about the outer circumference of the drum, on opposite sides of the lateral centerplane of the drum, and between respective ones of the pluralities of shoes and the lateral centerplane of the drum. These shoes and wheels are selectively positionable laterally and radially of the drum to effect centering of the carcass. A method is disclosed.
摘要:
Apparatus defining an outer circumference suitable to serve as a forming surface or an inner circumference suitable to serve as a circumference-engaging surface. The apparatus is particularly useful in the forming of the belt and tread package of a vehicle tire or as a transfer ring for grasping a belt and tread package of a vehicle tire. The apparatus includes a plurality of multi-sectioned segments of arcuate cross-section which collectively define the cylindrical surface of the apparatus and which are supported for movement radially of the longitudinal axis of the apparatus for adjustment of the circumference of the cylindrical surface. Each segment includes an intermediate section and two side sections hingedly connected to the intermediate section. The segments also include guide plates which cooperate with a side section of an adjacent segment so that movement of each segment radially of the drum effects a corresponding hinged movement of a side section of an adjacent arcuate segment.
摘要:
The invention is directed to radially collapsible tire building drum assembly which is provided with heavy undercut bead assemblies for the fabrication of tire carcasses, particularly those of multiple bead construction as utilized in high profile tires such as required for heavy trucks, earth movers, and aircraft. The foldable bead ring assembly of the present invention is provided with a plurality of circumferential or arcuate ring segments each supported by a drum segment. In the preferred embodiment, alternately disposed ring segments are provided with pivotable end sections which are pivoted out of the way during the drum collapsing operation to provide recesses for receiving outer end portions of adjacent ring segments. Simultaneously, with this reception of the outer end portions of the adjacent ring segments in the recesses the pivoted end sections are received in receptacles behind the adjacent bead ring segments. This intermeshing or folding of the ring segments during the radial collapse of the drum enables the drum to be radially displaced into a fully collapsed state while retaining the bead rings fixedly attached to the drum assembly.
摘要:
A roller assembly for use during tire construction includes a telescoping tube arrangement and a roller positioned thereabout. The telescoping tube arrangement has an inner tube section and an outer tube section and which can be adjusted in length to accommodate the width of the tire component under construction. The roller includes a cylindrical surface of a desired hardness which is positionable into engagement with the outer surface of the tire component under construction and which includes a plurality of roller sections which are positionable about the telescoping tube arrangement and in a side-by-side relationship with one another. In addition, each roller section defines a peripheral surface so that when the roller sections are positioned in a side-by-side relationship along the tube arrangement, the peripheral surfaces of the roller sections collectively provide the cylindrical surface of the roller.
摘要:
A rotatable drum useful in the manufacture of vehicle tires. A plurality of segments collectively define the outer circumferential surface of the drum. These segments are divided into two sets, one set being disposed on each of the opposite sides of a transverse center plane of the drum, the center plane being oriented normal to the rotational axis of the drum. The two sets of segments are mounted for selective positioning thereof axially of the drum from a location external of the drum to adjust the overall working width of the drum. Further, the segments are selectively positionable between expanded positions radially of the rotational axis of the drum to provide a relatively continuous circumferential outer surface of the drum for the layup of a tire carcass thereon, and collapsed positions radially of the drum to permit the removal of a formed toroidal carcass from the drum. Movement of the plurality of segments of each of the two sets of segments radially of the rotational axis of the drum is effected by “slaving” the two sets of segments off a central mechanism which controls the radial positions of all the segments simultaneously and equidistantly from the rotational axis of the drum, while further providing for axial movement of the two sets of segments relative to one another while the segments are positioned at any given radial location of the segments.
摘要:
A belt and tread drum for use in the manufacture of vehicle tires and having a plurality of circumference-defining segments whose radial position is determined by a camming means. The extent of movement of the camming means is selectable by stop means associated with a central shaft which serves to mount the camming means and the stop means. Visual indication of the selected circumference of the drum is provided.
摘要:
A radial collapse tire building drum having a hub, a plurality of axially extending cylindrical body segments disposed around the hub, a first radial support at one axial end of the hub and supporting one axial end of the segments, a second radial support at the other axial end of the hub and supporting the other axial ends of the segments, and a collapsing mechanism disposed within the drum between the first and second radial supports and operable to move the segments either radially outwardly with respect to the hub to form a cylindrical body concentric with the hub, or radially inwardly towards the hub to collapse the cylindrical body of the drum. A main drive shaft is secured to the hub with its axis co-extensive with the hub axis and there is a hollow shaft through which the main drive shaft extends. A drive transmission extends between the circumferentially adjacent, radially extending supports of the first radial support means to provide a drive connection between the hollow shaft and the collapsing mechanism for transmitting rotational movement of the hollow shaft relative to the main shaft to operate the collapsing mechanism.
摘要:
Tire-making apparatus (20) defining an outer or inner circumference (18) to serve as a forming surface or as a circumference-engaging surface, respectively, utilizes a frame (16) having a central axis (52) and a plurality of multi-sectional segments (28) which are moveable radially with respect to the central axis and include arcuate surfaces which collectively define the apparatus circumference. Each segment includes a primary section (60) and a secondary section (62) which flanks the primary section. The primary and secondary sections are connected so that as the segments are moved radially of the central axis, the primary and secondary sections move relative to one another along the circumference of the apparatus to help maintain the uniformity, or roundness, of the surface of the circumference collectively defined by the segments.