摘要:
The invention concerns a radially expansible assembly drum for the manufacture of tires, having a body mounted on a center shaft and presenting a receiving surface for the products to be assembled, the ends of which have different diameters; the drum contains retractable means capable of covering the end of the receiving surface of smaller diameter, and means of expansion of the drum to two different expanded positions.
摘要:
A tire building apparatus comprises a group of many segments enlarging to pushingly lock a bead portion of a green tire, a ring-shaped inner piston engaging with each segment of such a group, a ring-shaped outer piston contacting and engaging with a back face of the inner piston, a cylinder slidably housing the inner piston and the outer piston therein, a pair of gas pressure acting means moving each of the inner piston and outer piston inward or outward in the direction of the axial line, and a stopper formed in the cylinder.
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 tire building drum has a center section (720) and two end sections (722,724). Each end section is provided with an expandable bead lock assembly (726). The center section is preferably expandable. The expandable bead lock assembly comprises a carrier ring (CR) and a plurality of elongate links (K) extending between the carrier ring (CR) and a plurality of radially-expandable segments (S). When the carrier ring moves inward (towards the center section), the radially-expandable segments (S) move radially outward, urging a plurality of axially extending, circumferentially spaced-apart finger segments (F) outward from a collapsed position to an expanded position, and at least one position therebetween. In an embodiment of the invention, the bead lock assembly comprises a cylinder and two pistons (P1, P2) disposed within the cylinder. The pistons are free to move axially within the cylinder, in response to pneumatic pressure. The first piston (P1) is constrained from moving axially inward by rods (R1P1,R2P1,R3P1). The second piston (P2) is connected by rods (R1P2,R2P2,R3P2) to the carrier ring (CR). Pressurized air supplied through hoses (H1,H2,H3) and passageways in the cylinder (73) control the movement of the pistons (P1,P2) so that the beach lock assembly can be partially-expanded, fully-expanded, and retracted, unexpanded position.
摘要:
A tire drum turret having an outboard support and direct drive of the frame with adjustable drum shaft bearings for precise positioning of the drums.
摘要:
This invention relates to an improved radially expansible tire assembly drum (10) and a method forming tires (2) from an assemblage of tire components utilizing the assembly drum (10).
摘要:
According to the present invention, a universal spacer, connected to a traveling rod of a tread breaker tire building machine, incrementally adjusts the travel distance of the traveling rod and thereby controls the diameter of the building drum.
摘要:
This invention relates to a segmental tire building drum (10) for laminating tire components (103, 106) having a plurality of circumferentially spaced, radially movable base segments (30) each having a secondary segment (50) radially movable relative to the base segment for providing a cylindrical flat surface to support each of the tire components as it is applied and spliced on the building drum and to compensate for thickened edges of the tire components applied to the tire building drum.
摘要:
A method and apparatus providing for minimization of the separation of a plurality of radially collapsible, generally circular, mandrels which are mounted for axial movement along the longitudinal axis of a central shaft. The method and apparatus is useful for shaping of a green vehicle tire carcass employing a shaping drum which includes dual mandrels which are axially displace able along the longitudinal axis of the drum and adapted to engage respective ones of first and second beads of the carcass.
摘要:
A drum for the formation of a vehicle tire carcass including bead positioning features, the drum including multiple subsystems which are operatively and cooperatively interconnected to enhance the definition of embryonic sidewalls of the tire.