| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 425047000 | Sectional female mold including locking or clamping assembly means | 22 |
| 20080299241 | Steam heated vulcanization apparatus - Disclosed herein is an apparatus for vulcanizing rubber, particularly for vulcanizing the ends of endless rubber belts. The apparatus disclosed herein is a lightweight and portable steam heated vulcanization apparatus which comprises upper and lower platens comprising hollow bodies having a rigid outer wall and a flexible inner wall and adapted to receive steam therein and transmit heat and pressure to a rubber belt placed between the flexible inner walls of the platens. A steam source is connected to the platens for delivery of steam and a plurality of connecting bolts pass through apertures in the platens and the belt material therebetween to align the platens and secure them together so as to apply pressure to the belt in combination with heat for optimal vulcanization. | 12-04-2008 |
| 20080305196 | TIRE CURING FORMING MOLD - In a tire curing forming mold in which an annular mold portion brought into contact with a tread portion of a tire is constructed by sectors divided in a tire circumferential direction, an end portion of the sector is constructed by a piece attachable to and detachable from a sector main body, and the piece is structured to include all ridge lines between an end surface of the sector and a tread forming surface provided on an inner peripheral side of the annular mold portion. | 12-11-2008 |
| 20090162463 | TIRE MOLD - A segmented mold comprising a plurality of segments is provided. The segments are arranged to form an annular cavity to mold a tire, the segments comprising an inner face for molding the tread, and an outer radial surface. The mold further includes a plurality of slide blocks located radially outwards of the segments. Each slide block may have flanged ends and an inner cavity for receiving a segment therein. One or more channels are provided between each segment outer surface and the adjacent slide block inner surface forming a fluid passageway, wherein each fluid passageway is joined together by a fluid connector to form a fluid manifold for circulating a fluid medium. Steam may be circulated in the fluid manifold during curing of the mold. | 06-25-2009 |
| 20090162464 | Mold for Vulcanizing an Unvulcanized Tire Blank - A mold for vulcanizing an unvulcanized tire blank comprises: two axial members each carrying a molding surface for molding a sidewall of the tire, at least one of the axial members being movable between a position for molding the sidewall and a position for unmolding the tire; at least one molding member for molding a channel in a tread of the tire, the molding member being movable between a channel-molding position and a channel-unmolding position; and axial movement means for axially moving the channel-molding member between its molding and unmolding positions. The axial movement means include releasable connection means between the channel-molding member and the axial member. | 06-25-2009 |
| 20090162465 | Method of Producing a Vulcanizing Mold with a Number of Profile Segments that can be Joined Together to Form a Circumferentially Closed Mold, and Vulcanizing Mold - Profile segments of a vulcanizing mold each contain a basic body which has a profiled forming area on an inner side. A multiplicity of bimaterial rods that are aligned parallel to one another are arranged in each profile segment pressing die such that the longitudinal axes of the bimaterial rods are aligned approximately perpendicular to the forming area surface. The bimaterial rods each contain a core of a filling material disposed parallel to a longitudinal axis. A layer surrounding the core is parallel to the longitudinal axis and is formed of loosely bound—together metal powder, and that, to obtain a green profile segment part, the bimaterial rods are pressed in the pressing die and that the green part is subsequently subjected to a sintering process, by which the filling material can be removed, so that micro channels, that are arranged approximately perpendicular to the forming area remain. | 06-25-2009 |
| 20100009020 | TYRE CURING MOLD - A curing mold ( | 01-14-2010 |
| 20100260877 | CENTER MECHANISM OF TIRE VULCANIZING MACHINE - In a center mechanism of a tire vulcanizing machine, including an upper clamp ring for grasping an upper opening end part of a bladder, a lower clamp ring for grasping a lower opening end part of the bladder, a hub on a side of a lower mold for supporting the lower clamp ring, a spacer connected to the hub and supported on the side of the lower mold to be ascendable and descendable, and a center post supported by the spacer to be extensible and contractible, the hub and the spacer are formed as members separate from each other, and are divisibly bound to each other by bolts. | 10-14-2010 |
| 20100303941 | APPARATUS FOR VULCANIZATION AND MOULDING OF VEHICLE TYRES - An apparatus for moulding and vulcanisation of tyres for vehicle wheels includes a vulcanisation press and a vulcanisation mould associated with the press. The apparatus includes a pair of plates and a plurality of mould sectors that are mutually movable between an open condition and a closed condition; at least one plurality of sector carriers designed to support the mould sectors and movable together with the sectors; and a plurality of guide means on which the plurality of sector carriers slide for movement of the mould sectors from the closed condition to the open condition and vice versa, at least part of the sector carriers having at least one spring device designed to exert a thrust action adapted to ensure sliding of the sector carrier on the guide element in a substantially parallel direction. | 12-02-2010 |
| 20110104317 | MOLD FOR TIRE WITH FLOATING MOLD BACK RING - A tire curing mold capable of operating between open and closed positions includes a first plurality of translatable sections, the sections translatable between open and closed positions and one or more first side plates positioned for engagement with the first plurality of translatable sections when the sections are in the closed position. The tire curing mold also includes a first mold back ring slidably engaging the first plurality of sections and slidably attached to a first base plate, and a first plurality of displacement members extending between the first base plate and the first mold back ring, the one or more displacement members applying a closing force against the first mold back ring to force the first plurality of translatable sections into the closed position. | 05-05-2011 |
| 20110111075 | TIRE MOLD WITH POSITIVE MOLD OPENING SYSTEM - A curing mold includes an upper mold portion having a plurality of upper and lower sections radially translatable between open and closed positions, wherein each of the lower sections are positioned adjacent one of the upper sections to form a plurality of pairs of upper and lower sections. The tire mold also includes a pin extending from a first section of each pair of sections, and an aperture extending within a second section of each pair of sections, the aperture including an opening and positioned for receiving a portion of the pin extending from the corresponding first section when the mold is in a substantially closed position. Particular embodiments of the present invention also include a first plurality of radially translatable sections arranged to form an expandable ring and one or more first synchronization members extending between adjacent sections of the first plurality of sections. | 05-12-2011 |
| 20110151040 | MOLD APPARATUS FOR FORMING GROOVES IN TIRE SHOULDER - A mold device is described for use in a mold having a plurality of tread molding segments. Each tread molding segment has an end face for mating with an adjoining segment. The mold device includes a piston located on the segment end face and is actuated by the opening and closing of the mold. Each of the mold segments further includes a retractable blade assembly having a first and second chamber; wherein the piston is positioned within the first chamber and having a plunger end in communication with a temperature sensitive block of material and a spring. The first chamber is in fluid communication with a second chamber, wherein said second chamber further comprises a retractable blade mounted within a blade collar wherein the blade collar is slidably received within said second chamber; said second chamber further comprises a temperature sensitive block of material and a spring. | 06-23-2011 |
| 20110183022 | TIRE VULCANIZATION FORMING MOLD - In a tire vulcanization forming mold which is circumferentially divided into a plurality of segment molds, a plurality of circumferential grooves are formed on each segment mold with spaces in a tire width direction; arc-shape mold blocks are detachably fitted respectively in the plurality of circumferential grooves; a plurality of slit grooves are formed on each mold block to open on side surfaces of the mold block; tread pattern forming blades are detachably inserted into these slit grooves in the tire width direction; and coming-off prevention engaging portions are provided on the slit grooves and the blades. Thus, the tire vulcanization forming mold is capable of enabling the blades to be replaced easily with respect to the segment molds. | 07-28-2011 |
| 20110200698 | TIRE VULCANIZER - In a tire vulcanizer of the present invention, a locking mechanism which secures a top mold and a bottom mold in a closed condition comprises tie rods disposed alongside the top mold, and each having a top end part fixed to a top mold mounting member and a lower end part on which a plurality of grooves are formed one above the other in a vertical direction; through holes formed in a bottom mold mounting member for allowing each of the tie rod to pass through each of the through holes; lock plates capable of engaging and disengaging, along a horizontal direction, with the groove on each tie rod having passed through each through hole, and lock plate shifting mechanisms each opening and closing the lock plates only in a horizontal direction relative to each tie rod. With the configuration as described above, adjustment based on a height of a mold is simplified, while reducing an overall height of the tire vulcanizer. | 08-18-2011 |
| 20120027880 | METHOD AND APPARATUS FOR MANUFACTURING TYRES FOR VEHICLE WHEELS - In a method for manufacturing tyres for vehicle wheels, a green tyre, once formed, is transferred into a vulcanisation mould and pressed against the holding walls of a moulding cavity. Concurrently with the pressing step, a fluid present between the green tyre and the holding walls is evacuated through vent valves. The tyre is brought into contact with the closing head of each valve so as to push it toward a closed position of the valve itself. The closing head has a distal portion facing the moulding cavity and includes at least one grip element for the tyre blend, so that the closure member is pulled toward the open position while the moulded and cured tyre is moved away from the inner surface of said moulding cavity. | 02-02-2012 |
| 20120156317 | CENTER MECHANISM OF TIRE VULCANIZER - In a center mechanism of a tire vulcanizer of the present invention, in order to improve working efficiency and lower total height, after a green tire is vulcanized and patterned and becomes a vulcanized tire, a bladder well is lifted from a bottom position where a lower bead ring is positioned on a lower mold and a bladder is installed in the green tire to a top position where the lower bead ring is positioned above the lower mold and an upper clamp, and the upper clamp, a lower clamp, and the bladder are placed in the bladder well, while heights of the upper clamp and the lower clamp are fixed. | 06-21-2012 |
| 20120315346 | TIRE VULCANIZING DEVICE - A tire vulcanizing device includes a plurality of opening/closing cylinders for respectively independently moving a plurality of mold holding members, which respectively hold a plurality of segmented molds arranged in a circumference direction, forward and backward in radial directions, a plurality of positioning blocks arranged in respective spaces in the circumferential direction between the plurality of segmented molds, respective pairs of engaging members respectively provided at opposite sides of the respective mold holding members, and respective pairs of stopper members each pair of which are provided on the adjoining positioning blocks, for restricting the advanced end positions of the segmented molds in engagements with the respective pairs of engaging members. | 12-13-2012 |
| 20140356469 | SELF-LOCKING MOLD INCLUDING A FORCE-LIMITING MEANS - Segmented mold for molding and vulcanizing a tire of given diameter, having shells and segments collaborating to withstand the internal pressure and remain in the closed position without assistance from additional components, in which mold each segment comprises at its lateral edges a projection extending radially inwards, which projection is equipped with a lip extending axially towards the inside of the mold and having a frustoconical surface inclined at an angle α with respect to the axis (XX′) of the mold such that the extensions of the line of each frustoconical surface on a meridian plane intersect on the radially internal side of the segment concerned, and in which mold each shell comprises a projection extending radially outwards and provided with a lip having a frustoconical surface inclined by the same angle α with respect to the axis XX′ of the mold, wherein the mold contains force-limiting means made up of a stop and of a housing positioned respectively in the radial extension of each of the projections and each having a bearing surface, the bearing surfaces being intended to come into contact with one another when the internal pressure in the mold exceeds a given threshold. | 12-04-2014 |
| 20140377392 | TIRE MOLD - A tire mold is configured in such a manner that a pair of upper and lower side plates, a sector, a sector shoe which holds the sector, and an actuator are arranged in sequence from the inside toward the outside in the radial direction of the tire. The tire mold is characterized in that flange-shaped rings are respectively provided to the outer-diameter sections of the pair of upper and lower side plates, and in that the flange-shaped rings are formed in such a manner that, when the mold is fully closed and is at normal temperature, protrusions formed on the upper and lower parts of the sector shoe are in contact with the outer-diameter sections of the flange-shaped rings to position both the sector shoe and the sector relative to the pair of upper and lower side plates, and when the temperature of the mold reaches a vulcanization temperature in the fully closed state, the inner-diameter section of the sector comes into contact with the outer-diameter sections of the side plates and also the protrusions formed on both the upper and lower parts of the sector shoe come into contact with the outer-diameter sections of the flange-shaped rings. The tire mold thus provided does not cause misalignment between the axes of the upper and lower dies and can prevent the wear of the sector. | 12-25-2014 |
| 20150050376 | SELF-LOCKING MOLD FOR MOLDING AND VULCANIZING TIRES USING LEVERAGE - Segmented mold for molding and vulcanizing a tire of given diameter (DS), having a width (L) and a diameter (J) at the interconnect point (E), comprising shells and segments collaborating to withstand the internal pressure and remain in the closed position without assistance from additional components, in which mold each segment comprises at its lateral edges a projection extending radially inwards, which projection is equipped with a lip extending axially towards the inside of the mold and having an inclined frustoconical surface of given angle (a) with respect to the axis (XX′) of the mold such that the extensions of the line of each frustoconical surface on a meridian plane intercept on the radially internal side of the segment concerned, and in which mold each shell comprises a projection extending radially outwards and provided with a lip having a frustoconical surface inclined by the same angle α with respect to the axis XX′ of the mold. The distance (α) comprised between a straight line (tt′) parallel to the axis of the mold and passing through the point (T) of application of the resultant of the forces (F) of contact between the shells and the segments, and a straight line (ss′) parallel to the axis of the mold situated in the extension of the internal face of the resistant segment is equal to | 02-19-2015 |
| 20150079210 | TIRE CURING PRESS - A tire curing press for curing vulcanized tires includes an upper cavity part and a base that at least partially forms the lower cavity part. A movable platen is supported by the base that supports a tire mold section received within the upper cavity part. In various examples, an outer riser column is secured to the base and extends vertically upwards from the base to support the upper cavity part, a multi-height lock ring is disposed upon the base and is configured to interface with an annular flange of the upper cavity part via a bayonet connection, first and second cylinders are configured to apply a substantially equal squeeze pressure to the movable platen to thereby establish a final tire curing pressure within the press cavity, and/or a lock plate is carried by the upper cavity part and includes a locking surface for selective engagement with an abutment shoulder. | 03-19-2015 |
| 20160023414 | SECTOR MOLD, METHOD FOR MANUFACTURING SAME, AND JIG FOR PROCESSING PATTERN BLOCK - A pattern block can be easily attached to a sector with high positional accuracy, and furthermore, the strength thereof is enhanced. The present invention provides a sector mold constituted by attaching a pattern block to a sector, and the sector mold includes: the sector including an embedding groove and holes for positioning pins; and the pattern block including a convex portion for an embedding groove and positioning pins, on a back body surface, corresponding to the embedding groove and the holes for the positioning pins, respectively. | 01-28-2016 |
| 20160129653 | TIRE MOLD WITH IMPROVED DURABILITY - A tire mold equipped with features for protecting the tread mold segments from damage is described. One or more impact absorbers are positioned between tread mold segments and operate to preclude contact between the shoulders of the tread mold segments when such are biased back into their original position as a tire is removed from the tire mold. By precluding such contact, the tread mold segments are protected from damage that can affect the appearance of the cured tire. | 05-12-2016 |
