Abstract: A hub die-casting mold comprises a lower mold, a side mold, and an upper mold that are combined to form a hub casting cavity, where the lower mold is disposed on a lower mold plate, and the side mold is formed by abutting four sections of arc portions which are slidably connected to the lower mold plate, where the four sections of arc portions are divided into two groups that are respectively located at the left and right sides of the lower mold, and included angles from 3° to 10° are set between sliding tracks of two sections of arc portions in each group and a left-right diameter of the lower mold.

Abstract: The invention provides a split-type mold for wheel casting, the mold having an upper die, a split-type water-cooling side die and a lower die, and the split-type water-cooling side die is divided into four pieces along a circumferential direction of the wheel mold. A thermal deformation arc compensation surface is machined on ¼ arc portion of each split-type water-cooling lower side die, and a compensation surface is machined on key portions of 45-degree matching surfaces of adjacent split-type water-cooling upper side dies. The side die can effectively solve the problems such as untight matching between the matching surfaces, flashes of the matching surfaces and aluminum sticking and the like due to the thermal deformation and non-homogeneous expansion and shrinkage of the two portions of the split-type water-cooling side die.

Abstract: The present invention provides an integrated mold for casting of wheels. The integrated mold has an upper mold, integrated side molds and a lower mold, wherein the number of the integrated side molds is four in the circumferential direction of the wheel mold. Thermal deformation circular arc compensation surfaces are formed by processing on an upper and lower one-fourth circular arc part of each integrated side mold, and compensation surfaces are formed by processing on key parts of 45-degree matching surfaces of the adjacent integrated side molds. The integrated side molds can effectively solve the problems such as imprecise matching of the matching surfaces, parting-line flashes of the matching surfaces and adhesion of aluminum caused by thermal deformation of the integrated side molds.

Abstract: A utility pole mold including an elongated, hollow mold body having an internally tapered end and a reservoir extending radially out therefrom. A reusable barrier member is detachably secured to the at least one wall opposite the tapered end for containing a molten metal within the reservoir. In use, a lance is inserted into the mold body and a pouring end of the lance is positioned about the reservoir. The mold body and reservoir are then rotated, and the molten metal is poured from the pouring end at a constant rate. As the lance travels along the length of the mold body at an accelerating rate, a continuous layer of the molten material is deposited within the mold body and the reservoir. Following casting, the barrier is removed from the reservoir, and the newly formed utility pole is removed from mold. That portion of the pole that was formed within the reservoir portion is then removed to provide a pole having a bottom end with a desired wall thickness and interior taper.

Abstract: An apparatus for centrifugal casting under vacuum includes a rotor having a shaft extending in an essentially vertical direction and being rotatable around an axis defined by the shaft. The rotor has at least one mold, at least one crucible, and a gas-tight housing in which the mold and the crucible are accommodated. The apparatus also includes a vacuum source to create a vacuum in the housing, a heating device that melts a metal, a drive device that drives the shaft in order to rotate the rotor, and an auxiliary acceleration device configured to generate a force to further rotate the rotor to overcome a moment of inertia of the rotor. The auxiliary acceleration device includes a jet propulsion and/or at least one pushing actuator accelerating the resting rotor.

Abstract: A centrifugation injection mold comprising: a lower mold portion having a basic block the lower portion of which is mounted to and rotates within bearing means that are affixed to a machine structure, a plurality of axial columns the bottom portions of which are affixed around the outer portions of the basic block, and a moveable block defining a lower mold cavity and being mounted in a sliding relationship to the axial columns, in order to be axially displaced between an open mold position and a closed mold position; an impelling means operatively associated with the machine structure and with the moveable block for displacing the moveable block to the open mold position against the action of an elastic means; a locking means mounted to each axial column; and an upper mold portion to be removably seated on the axial columns and affixed thereto by the locking means in a closed mold position.

Abstract: A bearing arrangement for a centrifugation injection mold, comprising an upper mold portion (10) and a lower mold portion (20), which are respectively and rotatively mounted to an upper bearing (30) and to a lower bearing (40), the latter comprising: a first flat ring (41) affixed to a machine structure (E) and presenting a radial gap that is internal in relation to the lower mold portion (20); an annular cage (42) bearing spheres (44) seated on the first flat ring (41), said annular cage (42) presenting radial gaps that are external and internal in relation to the machine structure (E) and to the lower mold portion (20), respectively; and a second flat ring (45) inferiorly seated on the spheres (44) of the annular cage (42) and maintaining radial gaps that are external and internal in relation to the machine structure (E) and to the lower mold portion (20), respectively, axially bearing the latter.

Abstract: A quick-change lock assembly is adapted to releasably attach a fill tube to a mold in a casting machine, the fill tube connecting a furnace of the casting machine to the mold. The casting machine preferably utilizes a Vacuum Riserless Casting/Pressure Riserless Casting (VRC/PRC) process. The lock assembly includes an upper ring that is adapted to be attached adjacent an aperture in a surface of the mold of the casting machine. The outer ring has inner and outer concentric surfaces. The lock assembly also includes a lower ring that also has inner and outer concentric surfaces. The inner surface of the lower ring is operable to receive a fill tube. The outer surface of the lower ring is operable to be releasably attached to the inner surface of the upper ring.

Abstract: To produce precision castings from a melt, use is made of a metallic casting wheel (1) which has an annular distribution channel (4) and a plurality of interchangeable casting moulds (6), each having at least one filling opening (6a). The melt quantity per casting operation is chosen here such that the casting moulds (6) and the distribution channel (4) are filled with the melt upon the rotation of the casting wheel (1) about its axis (A—A), in such a way that after the solidification of the melt the precision castings are held together by a ring of the casting material which is formed in the distribution channel (4), the so-called circulating material for new casting processes, and are removed from the casting wheel (1) together with the casting moulds (6), whereupon the precision castings are separated from the ring.

Abstract: A spin cast die assembly includes a casing, an insert and an end cap assembly for retaining the insert against an annular shoulder within the casing. The end cap assembly has a mounting ring attached an end of the casing. The mounting ring receives a flyweight ring which engages an end of the insert and which pivotally supports a plurality of flyweight members which are mounted radially internally with respect to the mounting ring. The mounting ring has an annular flyweight engagement surface which faces generally radially inwardly and towards the shoulder. As the assembly is spun, the inner ends of the flyweight members pivot radially outwardly. The flyweight members thereby cooperate with the flyweight engagement surfaces of the mounting ring to cause the flyweight ring to move axially towards the insert and thereby force the insert against the shoulder.

Abstract: A self-leveling shim for centrifugal casting apparatus of the type wherein piston means maintain two-part elastomer molds in pressurized engagement with each other during the molding operation, said shim comprising an inflatable bladder positioned between said piston means and said molds, said bladder being inflatable only at selected portions thereof, so as to apply shim pressure at the portions of the molds where such pressure is required.

Abstract: Multi-mold centrifugal casting system comprising basically conventional centrifugal casting apparatus except that instead of receiving a single mold, i.e., one pair of mold halves, a plurality of molds are mounted in the apparatus in stacked relation, with all mold halves having central openings to define a plurality of ring-like molds. A manifold member is positioned in the center of the stacked ring-like molds for receiving and simultaneously feeding molten metal to each of the stacked molds.

Abstract: Apparatus in which moulds may be prepared by centrifugal casting comprises a moulding case comprising two plates and spacing means such as two spacing rings therebetween, each of the plates having an opening on or near a central axis of the case for supply of a room temperature vulcanizing (RTV) rubber or molten casting material in the case, means for clamping the two plates together such as a clamping nut threaded on a pillar; and means for spinning the moulding case about a central axis such as a motor-drivable turntable. The moulding case is spun about the said central axis and simultaneously RTV rubber supplied into the moulding case to prepare a mould. A cast may be taken in the resulting mould spinning the mould whilst supplying molten casting material into the mould. Spinning is continued until the casting material has solidified.

Abstract: A melt receptacle (4) together with a muffle (5) attached thereto by a connector is situated on a centrifugal arm (2) of a centrifugal device, which arm rotates during the casting operation. On a common structural unit (8) are situated a preheater furnace (1) and the connector (9,13) in a manner to allow, respectively, for the conveyance of the muffle (5) from the preheater furnace and the fastening thereto for which connector there can be used a manipulator arm (12) which carries out only one shifting movement in one plane and engages the muffle (5).

Abstract: A centrifugal ceramic casting furnace including a horizontal arm rotatably supported by the upper end of a vertical shaft driven by a motor and the arm having a casting ring cradle on one end, a muffle movable along said arm a limited distance toward and from the cradle and a counterweight device mounted upon the opposite end of the arm adjustably both longitudinally and upwardly in a manner to balance the opposite ends of the arm statically and also adjustably dispose the effective masses of the muffle and counterweight within a common horizontal plane to effect substantial freedom from vibration while the furnace is rotating at a centrifugal casting speed.

Abstract: The chill mold is mounted on a support which is rotatable about the vertical axis of its casting cavity and is composed of a lower element, an upper element which has a pouring opening, and four peripheral elements arranged in two opposing pairs. The lower element occupies a casting position on the support and coaxial therewith, the upper element is movable between a casting position in which it overlies the lower element coaxially, and a shakeout position in which it does not interfere with the upward removal of the piece from the mold, and the peripheral elements are displaceable radially on the support to allow their movement from a casting position, in which together they surround the upper and lower element, to a shakeout position in which they are further removed from the axis of rotation.

Abstract: The invention relates to a centrifugal casting machine, comprising on a base stand, a rotating assembly consisting of a mold, a bracket for stripping and releasing the casting. After solidification, the mold is opened by means of a plate movable vertically of the assembly and the upper part of the mold is gripped and transferred by the bracket straight above a position where the casting attached thereto is released. The mold is then closed again and rotated for the next casting.

Abstract: A positioning apparatus for a centrifugal casting machine having an articulated mold that is mounted for rotation in a cantilevered manner on a drive shaft. The positioning apparatus includes a pair of pillow block bearings having arcuate bearing races that operate to allow the drive shaft to be tilted within a predetermined angular range relative to its longitudinal axis. In addition, the positioning apparatus includes a plurality of locking pins each of which are mounted to cooperate respectively with one of a plurality of positioning members mounted on a rotatable mold-supporting face plate of the casting machine. Operation of the lock pins into engagement with the positioning members moves the face plate into a predetermined position relative to its axis of rotation, following a casting cycle of the machine, so that segments of the centrifugal mold can be radially stripped from an article cast therein without unduly distorting the cast article.

Abstract: The installation comprises a first core support pivotable about a fixed axis between a horizontal position and vertical position. The core is mounted on the first support. A second core support having a horizontal axis is provided with a core gripping device and is movable between the first core support, in which it receives the core from the first core support in the vertical position of the first support, and the socket end of a centrifugal casting mould. The two supports are provided with a device for mutually centering the two supports when transferring the core from one support to the other.

Abstract: A roll-over transfer for foundry equipment is disclosed in which a "C" shaped frame rolls along a base combining translation and rotation between two end positions. The frame is powered by piston and cylinder actuator connected for a cycloidal operation to provide maximum acceleration and deceleration at the ends of the frame travel. Cables are connected between the frame and base to maintain a predetermined relationship between the translating movement and the rotating movement. Primary and supplemental stops cooperate to positively prevent over-travel in the event of a failure in the drive system. A single clamp and draw actuator is centrally mounted on the frame for clamping and drawing foundry equipment. The machine is flexible in use in that it can be loaded and unloaded from any one of three directions in each of its operated positions.

Abstract: Centrifugal casting apparatus comprising a rotatable sleeve supported at a fixed axial location and having a conically tapered internal surface, and a driving sleeve axially spaced with respect to the rotatable sleeve and having a conically tapered internal surface opposed to the internal surface of the rotatable sleeve. The driving sleeve is driven in rotation and it is axially displaced with respect to the rotatable sleeve. A split mold assembly is disposed between the rotatable sleeve and the driving sleeve and includes a casing and a plurality of mold segments slidably supported by the casing. The mold segments are radially moveable towards and away from the axis of rotation between a closed mold position and a opened mold position. The mold segments can be locked in the open and closed positions.

Abstract: A tapered mould consisting essentially of a rigid outer frame formed of a set of radially arranged longitudinally extending guide members and a set of axially spaced encircling rings, and a gapped frustoconical tubular casing of resilient sheet material having a set of longitudinal stiffening members arranged thereon for sliding engagement with the respective guide members. The gap in the wall of the tubular casing, extending along a longitudinal line on the periphery of the casing, is opened and closed automatically as the tubular casing inserted in the outer frame is moved axially in opposite directions. Labor - consuming bolt - clamping and releasing operation is completely eliminated and the mould operation can be mechanized with ease, as desired. Packing means interposed between a pair of stiffening members arranged on the opposite sides of the gap further ensures leak - proof gap closing.

Abstract: The machine comprises a housing, a casting mould rotatably mounted in the housing and a device for axially placing and maintaining a core against the end of the mould. The device comprises an element for urging the core against the mould, a releasable mechanism for fixing the core to the element and means for shifting the element between a position in which it urges the core against the mould and a withdrawn position. According to the invention, the mechanism is movable on the housing between a position in which it fixes the core to the element when the latter applies the core against the mould and a withdrawn position, the arrangement being such that the mechanism can follow, between its withdrawn position and its other position, the movement of the means for shifting the element. A return element is provided for returning the mechanism to its withdrawn position.

Abstract: An apparatus for centrifugal casting in split molds has a rotatable casting head which is in the form of a hollow frustum of a cone. The head is provided with circumferentially spaced slots which extend along the generatrices of the cone. Each of the slots slidably receives a section of a mold, the various sections being so designed as to define a mold with one another when the sections are properly positioned relative to one another. Each of the mold sections is connected with, but is rotatable relative to, a hollow, primary piston which draws the mold sections together and moves them apart. A jaw chuck having a pair of jaws pivotally mounted thereon is arranged for rotation with the mold sections. The jaws are activated by a rod connected with a secondary piston which reciprocates inside the hollow, primary piston and may be moved independently thereof or in unison therewith. The rod is rotatable relative to the secondary piston.

Abstract: A plant for producing bimetallic sleeves by pouring molten so called babbitt metal into the space of a sleeve being rotated. The plant comprises a head stock and a tail stock mounted on a bed, the tail stock being slidable along the axis of the sleeve being babbitted, each mounting means for centering and clamping the sleeve that is poured in between them with the help of cones set up on the head and the tail stocks.The tail stock mounts a pouring device wherein the babbitt metal to be poured into the sleeve is delivered by a batcher. The pouring device includes a feed funnel adapted to receive the molten babbitt from the batcher, a pipe enclosed in the axis of the sleeve, a connecting pipe supplying the molten babbitt from the feed funnel into the pipe, and a chute onto which the molten babbitt is delivered from the pipe through an opening provided therein.

Abstract: The upper and lower parts of a split mould are merely superposed together, and an inclined peripheral surface of said upper mould is brought into engagement with claws of a chuck attached to a rotary shaft of forming or moulding machine.

Abstract: Labor-consuming bolting operation as required with conventional forms of the gapped or split type has been ingeniously expelled by the provision of a form structure comprised essentially of a rigid tubular frame, a resilient gapped tubular casing arranged therein as a form in which concrete is to be placed, and camming means arranged on the inside of the rigid frame and on the outside of the resilient casing and cooperable to act upon the resilient tubular casing radially and circumferentially thereof with axial movement of such resilient casing relative to the rigid frame so as to close the gap in the resilient casing while holding the latter in coaxial relation to the rigid frame, any loss of moisture content of concrete during centrifugal forming operation can be effectively prevented by arranging an appropriate packing element on the resilient casing along the gap therein.

Abstract: Maintaining devices maintain the rotary casting mould. Each device comprises a set of coplanar rollers arranged around a region of the mould. Each set comprises two lower support rollers and an upper pressing roller carried by a pivotal arm. Each pressing roller is a driving roller and each roller has a diameter at least equal to the diameter of the mould and a length at least equal to the diameter of the roller.