Abstract: A machine (1) for the production of ceramic products includes: a mould (2) made up of two parts (3, 4) designed to define, in a closed configuration, a cavity for casting the product; an apparatus (5) for clamping and containing the mould (2) acting on the mould (2) in its closed configuration; a frame (7) for supporting the mould (2) and clamping and containing apparatus (5).

Abstract: The invention relates to a method and a device for producing a moulded body having microstructures from moulding material. The method for producing a moulded body having microstructures on a carrier out of moulding material is effected by inputting a moulding material into a container (10) comprising a mould cavity (14), wherein at least one micro-structured mould (12) is provided in the mould cavity. Furthermore, the centrifugation of a container (10) is carried out until the moulding material has completely entered into the structure of the mould (12). Thereafter, the curing of the moulding material is carried out to form a moulded body having microstructures, which is then removed from the mould (12) and the container (10).

Abstract: A mold system for forming a multilevel block is disclosed which comprises a multilevel mold box insert for forming a multilevel block, a mold box frame adapted for receiving therein the multilevel mold box insert, a multilevel plunger assembly, and a press head plate adapted for receiving thereon the multilevel plunger assembly.

Abstract: A mold system for forming a multilevel block is disclosed which comprises a multilevel mold box insert for forming a multilevel block, a mold box frame adapted for receiving therein the multilevel mold box insert, a multilevel plunger assembly, and a press head plate adapted for receiving thereon the multilevel plunger assembly.

Abstract: Methods and systems for fabrication of injection molded optical components. In one embodiment, a moldplate with cavities receives injected optical material within walls of the cavities. The cavities are designed with a geometric profile approximately corresponding to a optical profile of an optical element to be formed therein. When molten optical material is injected into the cavities of the moldplate, the injected optical material forms a meniscus due to surface tension between the optical material and the wall of the cavities. The meniscus thus provides a shape corresponding to the predetermined optical profile. The optical material is then rapidly cured with actinic radiation, and a desired optical element with high-precision dimensions is formed within the cavities of the moldplate. In some embodiments, the moldplate is spun such that the meniscus is adjusted to match the predetermined optical profile within a certain tolerance.

Abstract: A mold assembly includes a support table mounted for rotation within a vacuum chamber. A plurality of hollow part molds is radially disposed about an axis of rotation of the support table. Each part mold has fiber architecture disposed between an inflatable bladder and internal walls of the part mold. A first motor rotates the support table and resin is urged by centrifugal force to flow along the length of each part mold until the fiber architecture is thoroughly impregnated with resin. A second motor spins each part mold about an axis of rotation of the part mold to ensure that the resin migrates radially outwardly relative to the interior wall surface of each part mold. The resulting product is a monolithic, seamless part having no voids.

Abstract: A device for filling at least one mold with at least one powder. The device includes a mechanism to add at least one powder, at least one mechanism to eject the powder added into the device, in the form of a layer, and at least one deflector capable of locally intercepting at least part of the powder ejected in the form of a layer and redirecting the locally intercepted powder towards a determined location in the mold.

Abstract: A plastic lens forming apparatus which forms a plastic lens having a longitudinal direction and a lateral direction crossing each other at right angles, includes: a mold into which resin as material of the plastic lens is cast, wherein the mold has a pair of mold parts disposed opposed to each other and having a cavity between the mold parts, and a tape wound around the outer circumferential surfaces of the mold parts, and each of the mold parts has a special shape which has a longitudinal portion corresponding to the longitudinal direction of the plastic lens and a lateral portion corresponding to the lateral direction of the plastic lens.

Abstract: A mold assembly includes a mold mounted for rotation within a vacuum chamber. The mold includes a central drum having a hollow interior into which resin is poured. A plurality of hollow blade molds is radially disposed about the central drum. A plurality of radially disposed struts is secured to the central drum and each strut is received within an associated blade mold. Openings are formed in the central drum and in the struts. Elongate bundles of woven fiberglass are weaved in and out of the openings, beginning in the drum and extending to the respective ends of each strut. A motor spins the mold assembly and resin in the central drum is urged by centrifugal force to flow along the length of the woven fiberglass bundles until each blade mold is filled with resin. The resulting product is a monolithic structure having plural blades radiating from a central hub.

Abstract: A method for forming a masonry unit that includes joining a pallet to a bottom surface of a mold, inserting a filler plug into the side of the mold between a partition plate and a pallet, dispensing mix into the mold, and compressing the mix with a shoe to form a masonry unit with a filler plug effect.

Abstract: A roller cone drill bit for drilling earth formations includes a bit body having at least one roller cone rotably attached to the bit body and a plurality of cutting elements disposed on the at least one roller cone in a plurality of rows arranged circumferentially around the at least one roller cone, wherein at least one cutting element in the gage row, the heel row, or a surface of the at least one roller cone bounded by the gage and heel rows comprises thermally stable polycrystalline diamond or a thermally stable polycrystalline diamond composite. The at least one cutting element may be a TSD insert or a TSD composite insert and may be formed by brazing, sintering, or bonding by other technologies known in the art a thermally stable polycrystalline diamond table to a substrate. The interface between the diamond table and the substrate may be non-planar.

Abstract: A method and system of forming a fire door core are provided. Hydraulic binder and resin are supplied from raw material bins and mixed to provide a submixture. Exfoliated vermiculite is then mixed with the submixture to provide a mixture that is deposited into a plurality of compression molds. Each of the filled molds are pressed in a press at a predetermined temperature at a predetermined pressure for a predetermined period of time sufficient to harden the mixture into a hardened slab. The hardened slabs are then removed from the molds, impregnated with water or steam in a water impregnation assembly and dried in a drying assembly.

Abstract: A method and system of forming a fire door core are provided. Hydraulic binder and resin are supplied from raw material bins and mixed to provide a submixture. Exfoliated vermiculite is then mixed with the submixture to provide a mixture that is deposited into a plurality of compression molds. Each of the filled molds are pressed in a press at a predetermined temperature at a predetermined pressure for a predetermined period of time sufficient to harden the mixture into a hardened slab. The hardened slabs are then removed from the molds, impregnated with water or steam in a water impregnation assembly and dried in a drying assembly.

Abstract: A resin composition which can enhance the heat resistance and the humidity resistance of a dye possessing the maximum absorption at wavelengths in the range of 380-780 nm is provided. It is obtained by polymerizing a monomer mixture containing 5-100 wt. % of a monomer represented by the formula: CH2═CR—COOX (wherein R denotes a hydrogen atom or a methyl group and X denotes a hydrocarbon group of 4-25 carbon atoms) and/or a fluorine atom-containing unsaturated monomer and containing a dye possessing the maximum absorption at wavelengths in the range of 380-780 nm in an acryl type resin having an acid value in the range of 0-30 mgKOH/g and a hydroxyl value in the range of 0-30 mgKOH/g.

Abstract: A method and system of forming a fire door core. Hydraulic binder and resin are supplied from raw material bins and mixed to provide a submixture. Exfoliated vermiculite is then mixed with the submixture to provide a mixture that is deposited into a plurality of compression molds. Each of the filled molds are pressed in a press at a predetermined temperature at a predetermined pressure for a predetermined period of time sufficient to harden the mixture into a hardened slab. The hardened slabs are then removed from the molds, impregnated with water or steam in a water impregnation assembly and dried in a drying assembly.

Abstract: A process for forming molded articles from particulate thermoplastic material, the process comprising: (a) providing a track having a plurality of process stations, (b) providing a mold assembly comprising a base, at least one hollow mold upstanding from the base, and guide means on the base for moving the mold assembly on the track, (c) preheating the mold assembly at a preheat station on the track, (d) moving the mold assembly from the preheat station to a transfer station on the track, (e) transferring the mold assembly from the transfer station to a molding station, (f) forming the molded articles by fusing particulate material to the at least one mold at the molding station, (g) transferring the mold assembly with the molded articles thereon from the molding station back to the transfer station, (h) moving the mold assembly from the transfer station to a cooling station on the track, (i) moving the mold assembly from the cooling station to an unloading station on the track, (j) removing the mol

Abstract: An apparatus for making molded articles of plastic material, in particular molded films of thermoplastic flakes, by using a slush molding process, includes a mold container having at least one interior space for receiving plastic material and a mold wall which can be heated and cooled in alternating sequence. The mold container is located within a support frame which is rotatable about a rotation axis, whereby the suspension of the mold container is so configured as to allow a movement of the mold container in three degrees of freedom. The suspension includes a combined swivel and shift arrangement, which is disposed between the support frame and the mold container and supports the mold container in such a manner as to effect a rotation of the mold container about a pivot axis, which is perpendicular to the rotation axis, and a reciprocating motion in the direction of the pivot axis.

Abstract: A method and apparatus for preparing single layer tiles or slabs from a mixture of a granulated stone material having a selected particle size, and from a slurry formed by cement, a quantity of between 0.25 and 0.36 parts by weight of water relative to the weight of cement, and a plasticizer for cementitious slurries, in which the quantity of slurry added is slightly in excess of the quantity corresponding to the void fraction of the granulated material, in forming mould, containing a layer of predetermined thickness of the mixture, to be subjected to a first very short deaeration step under the effect of a very high vacuum and to a subsequent vibration step under a lower vacuum, after which the mould goes on to seeing and hardness steps.

Abstract: A molding apparatus is disclosed which includes a first support having spaced apart vertical posts, and a first set of mold halves positioned between the vertical posts. A second support is provided having positioned thereon a second set of mold halves. A clamp bar is positioned on the vertical posts adjacent the second support so as to extend across the mold halves of the second set of mold halves. A grip member secured to the first support is movable between an engage and disengage position, wherein in the engage position a clamp engages the grip member and the clamp bar so as to drive the respective sets of mold halves into sealing contact with each other, so as to form two mold cavities. In the disengage position, the grip member is clear of the clamp so as to permit the clamp to also act as a device to separate the supports when the molding process is over. Methods of using this equipment in an automated rotational molding process are also disclosed.

Abstract: The present invention includes a mold apparatus for facilitating replacement of rotatable molds therein. First and second frames are provided forming a plurality of mold cells and each mold includes an upper and a lower mold section. The upper mold section is removably coupled to the upper frame, while the lower mold section is removably coupled to the lower frame. Using this arrangement, a mold may be removed by detaching all connections between it and the frames, while maintaining the frames closed. Similarly, a mold may be inserted into a mold cell and connected to the frames while maintaining the frames closed. The removal and insertion operations may be performed radially or axially, depending on frame configuration.

Abstract: Disclosed is an apparatus for manufacturing green bricks from clay for the brick manufacturing industry. The apparatus includes a circulating conveyor carrying mould containers combined to mould container parts, a reservoir for clay arranged above the mould containers, a mechanism for carrying clay out of the reservoir into the mould containers, a mechanism for pressing and trimming clay in the mould containers, a mechanism for supplying and placing take-off plates for the green bricks and a mechanism for discharging green bricks released from the mould containers. The apparatus further includes a mechanism for moving the mould container parts filled with green bricks such that a protruding edge is formed on at least one side of the green bricks.

Abstract: The invention relates to a device for the manufacture of tablets or compacts with at least two compacting tools which in each case can be moved in relation to one another and at least one template interacting with these and with a filling arrangement to feed the tabletting material into the template. In accordance with the invention, the compacting tools movable in relation to one another are aligned horizontally.

Abstract: A centrifuge (18) is used to introduce a fluid, particularly a viscous fluid such as an encapsulating resin, into a cavity in a container (10), particularly a small cavity such as the inside of an electronic component housing. Measured quantities of the fluid are placed in dispensing vessels (28) in the centrifuge opposite the containers to be filled. The dispensing vessels have openings (36) through which the fluid can flow when centrifugal force is applied. On the application of this force, all the fluid flows out of the vessels into the containers.

Abstract: A molding apparatus has a first support with two vertical posts, a first set of two mold halves, and a grip positioned thereon. There is also a second support having positioned thereon a second set of two mold halves. A clamp bar is positioned over the two supports in a vertically movable manner so as to retain the sets of mold halves together to form two mold cavities. The clamp bar interfits and rides along the vertical posts and so as to simultaneously clamp multiple molds closed. There is also a lock for locking the clamp bar to the vertical posts, thus clamping the molds closed without the need for nuts or bolts. A hydraulic clamp is used to assist in moving the mold halves into a tight sealing position.

Abstract: A roof tile making machine and its method of operation. The reinforcement ribs on the underside of a concrete roofing tile are formed during their manufacture by directing mortar into recesses in a pallet on which the tile is made, with a compactor means in the form of multi-tined wheels compacting the mortar in the recesses, and providing thereafter a secondary layer of mortar over the compacted reinforcement ribs, to complete the tile in a conventional manner. A tile provided by the apparatus of the invention has reinforcement ribs which are compacted to the same degree as the remainder of the tile, thereby ensuring that the finished product, when cured, has a uniform, or substantially uniform, strength.

Abstract: The manufacture of moldable concrete products with deferred mold release incorporates molding means bm1 into optimized rotary structures 1, 5, 7, 9, 12 in the form of modular cylinders having at least two faces, the cylinders being equipped and/or associated with means which group together the main work-stations MP, MT, B, D, NH so as to assign a rotary travel of more than 270.degree. and preferably equal to 360.degree. to the curing of the molded material with or without recourse to any means for accelerating the curing.

Abstract: The rotational molding apparatus includes a main support member having at least one arm extending therefrom. Each arm of the apparatus is adapted to rotate enclosed articles being formed or coated about at least one axis. In order to cool the arms during operation, each of the arms includes a cooling channel extending down the length of the arm through which a cooling fluid is circulated. Each arm further includes a fluid return in communication with the cooling channel which receives the cooling fluid at the end of the arm and recirculates it back to the main support member so that the cooling fluid does not interfere with the rotational molding process.

Abstract: A rotary tabletting machine, for compressing powder or granular material, includes a rotating turret (3) supporting a ring-shaped member (5) in which openings (2) are made to be filled with the powder or granular material, with pairs of punches moved by driving means (10) which engage pairs of rollers (41) joined to the punches. The punches (20,30) have operative heads (21,31) adapted to compress the material inside the openings (2), and outer mobile heads (24,34), made of wear resistant material. The pairs of opposite punches (20,30) feature also, for each of the punches (20,30), respective tightness seals (25,35).

Abstract: An apparatus for producing a green compact includes a circuit that circulates die assemblies, each of which contains a rubber mold having rubber in at least its side portion. The apparatus also includes a high density filling device that has a feeder for feeding powder into the rubber molds; a pusher or a vibrator or both a vibrator and a pusher; a die press machine configured to impart a compaction force sufficient to produce the green compact to each of the circulating die assemblies in succession; and a device for removing the green compact from each rubber mold. The high-density filling device, the die-press machine and the removing device are successively arranged along the circuit. Each of the circulating die assemblies has sufficient structural integrity to withstand the compaction force because all structure necessary to withstand the compaction force is present in the circulating die assemblies.

Abstract: A molding apparatus is provided which consists of three frames which are relatively pivotal with respect to one another. One frame (A) is cradled in a second frame (B) and provision is made for tilting the first frame relative to the frame in which it is cradled. The cradling frame and the frame cradled therein are made tiltable relative to third frame (C). The tilting operations are effected by hydraulic piston and cylinder arrangements (170, 176). The method of the invention consists of cradling the first frame in a second frame, tilting the first frame relative to the second frame to a certain angle of inclination and thereafter tilting the cradling second frame along with the cradled first frame therein to a second angle of inclination relative to the third frame.

Abstract: A mold is disclosed for producing two unjoined molded items in a single void during a single molding process. A divider ring is provided along the joining seam between mold halves. The ring has a central aperture and is formed of a stick resistant material.

Abstract: A method of manufacturing hollow molded articles having a beautiful surface at a low cost and by a simple and efficient process includes providing a hollow elastic molding die made of an elastic film and having an opening port, feeding a material to be molded of an amount smaller than the internal volume of the elastic molding die into the elastic molding die through the opening port, closing the opening port, solidifying the material to be molded while the elastic molding die is rotated to all directions, and parting the solidified hollow molded article from the elastic molding die. Arrangement for preventing the elastic molding die from being deformed while it is rotated to all directions includes holding it firm by a solid holding member conforming to the external shape thereof or by positioning it in a fluid or powdery material holding member.

Abstract: An apparatus is disclosed for enhancing the concentration of a second material within a first material, by liquefying the first material and introducing the second material within the first material. The first and second materials are introduced into a container and the container is rotated to generate a centrifugal force for facilitating the migration of the second material through the first material to enhance the concentration of the second material within the first material.

Abstract: A method and apparatus is disclosed for forming a cover for an air bag deployment opening, the cover having a tear seam defined by a reduction in thickness of the cover. The cover can be formed as an unitary part of an outer skin layer for an automobile interior trim structure. The apparatus includes a thin shell having an inner surface upon which a thermoplastic material is cast to form the outer skin. A multiplicity of pins are disposed on and extend away from a backside thereof to transfer heat to the inner surface. The density of the pins is reduced on the portion of the backside of the shell proximate the portion of the inner surface upon which the tear seam of the outer skin is to be formed. The shell can be heated or cooled by using a plurality of nozzles to impinge heated or cooled air onto predetermined locations of the backside. A cover and tear seam construction is also disclosed.

Abstract: Structural parts are produced from fiber composite preforms which are placed into a mold conforming to the shape of the desired part. A resin is then injected into the mold so as to fill the mold and encapsulate the fiber preform. The mold is evacuated prior to the injection step, and is rotated about a vertical axis during the injection step. The resin is maintained under pressure during the injection step, and the resin is hardened in the mold whereby net molded parts are formed.

Abstract: A venting device for a rotocast shell mold body having a neck and a flanged neck plate thereon. The venting device is a tube formed of black iron pipe of a predetermined diameter and length and mounted in an opening formed in one of the neck or a cover mounted on the neck plate, and extended for approximately half its length into the interior of the mold. When used with the neck of the mold, the tube is welded in place, and when used with a mold cover, the tube is threadedly mounted therein.

Abstract: A method for manufacturing concrete panels by continuously pressing and an apparatus for carrying out the method. The concrete panels are successively manufactured by continuously feeding pallets onto a conveyor, feeding a concrete material onto the pallets, continuously pressure frames against the concrete material from the upper side and both lateral sides of the concrete material while imparting vibrations to the pressure frames, forming hollows in the concrete material by thrusting a rotary screw-type core rod therethrough to provide a panel shape hollow molding, and cutting the molded concrete material into a length corresponding to the length of each pallet. In the manufacture process, an organic or inorganic fiber material may be incorporated into the concrete material for the purpose of reinforcement of the finished products.

Abstract: An improved combination counter rotating packerhead and vibrator assembly is provided. A counter rotating packerhead including counter rotating roller assemblies, longbottom assemblies or a combination thereof is disposed directly over an annular pneumatic vibrator. The coaxial drive shaft for the counter rotating packerhead passes through the vibrator thereby permitting the power transmission means to be located below, and isolated from, the vibrator. The vibrator is disposed below, but adjacent to, the counter rotating packerhead for faster pipe production.

Abstract: To eliminate the fluctuations in the precision of the material distribution which could not be avoided when manufacturing pipes in the centrifugal moulding process with the prior art installations, a new process and an installation for carrying out the process is proposed. This has at least two cylindrical centrifugal drums (1) serving as moulds and an injection carriage (12) which is displaceable in two directions perpendicular to each other, with a feed arm (11).

Abstract: There is disclosed a spring-loaded shock absorbing system for use with molding devices to minimize wear due to repeated closing of mold portions. A helical spring which separates the mold portions must be overcome to join the mold portions. The spring is compressed between a platform's shoulder surface of adjustable height and a ledge flaring outward from a spring retainer. The shock absorber is used in conjunction with a clamping system.

Abstract: Method for selectively rotationally molding an industrial drum in either a closed-head configuration or an open-head configuration within a mold constructed for selective modification to accomplish molding of the drum in either selected configuration by inserting or deleting a separator between a first mold cavity for forming the body of the drum and a further mold cavity for forming the head of the drum, the further mold cavity being selected from alternate second and third mold cavities, such that both the body and the head are rotationally molded simultaneously within the mold during molding of either configuration of the industrial drum.

Abstract: An assembly (10) for molding a two-tone color plastic shell (12) includes a divider wall (42) having first and second sections (42a) and (42b) that are interconnected for lateral adjustment therebetween for controlling the position of a seal gasket (60) with respect to a divider rib or division surface (36) on a heated mold (22).

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: Hazardous radioactive waste is compacted and cast into safely handled monolithic castings having a radiation barrier wall completely enclosing the radioactive waste by centrifugal casting processes in which the barrier wall may be either a pre-formed shell transported to the jobsite or it may be formed by biaxial centrifugal casting and curing of the barrier wall in a mold. When a pre-formed shell is used, means are provided for thickening the radiation barrier if necessary by biaxial casting of additional barrier material inside of the shell. Castable radioactive material is cast inside the barrier wall before removal of the casting mold from the finished cast monolith. The cast monolith is supported for rotation as the mold is removed therefrom so that additional impact resisting and radiation barrier material can also easily be applied to the exterior surface monolith if radiation leakage exceeds tolerance levels.

Abstract: A molding machine which includes a rotary-table system having at least two tables supported on the frame, which system has a lifting device in the area of each table, and a compressing device constructed on the frame.

Abstract: A shell mold support apparatus for rotationally casting thermoplastic polymer particles onto a heated casting surface to form a thin polymer shell conforming to the shape of a heated casting surface includes a base framework that supports a bottom shell mold; a cover carrier is supported on the base framework so as to either open or close a cover or top shell mold with respect to the bottom shell mold; and a hinged support couples the cover carrier to the base framework for movement against an opening stop.

Abstract: An apparatus for making a quartz glass crucible comprises a housing having a first chamber and a second chamber therein, a rotation crucible having an inner surface corresponding in configuration to the quartz glass crucible, means for rotating the rotation crucible, means for shifting the rotation crucible and the rotating means together between the first and second chambers, means placed in the first chamber for feeding a grain material into the rotation crucible, means placed in the first chamber for shaping the grain material in the rotation crucible so as to form a shaped body in the shape of the quartz glass crucible when the rotation crucible rotates, and means placed in the second chamber for heating and fusing the shaped body within the rotation crucible so as to make the quartz glass crucible.

Abstract: An assembly (10) for molding a two-tone, thin-walled plastic shell (12) for parts such as automobile door panels, control and instrument panels and the like includes a charge box (24) for supplying dry thermoplastic material to separate casting surfaces (30, 32) on a heated mold (22) selectively connected to the charge box (24) during the casting process. A pressurized inflatable seal gasket (60) is connected to the charge box (24) for sealing a division surface (36) on the heated mold (22) which surface (36) separates the casting surfaces (30, 32) of the mold (22). The seal gasket (60) is attached to the charge box (24) on a divider wall (42) via a sliding member (80) which positions the seal gasket (60) longitudinally along the divider wall (42). The sliding member (80) is secured to the divider wall (42) via threaded pins (86). The gasket seal (60) may be removed and reinserted in the slider member (80) providing automatic adjustment thereof.

Abstract: An apparatus (40) for molding a thin walled plastic shell includes a mold box (42) having an inner mold surface (48). A powder box (52) includes an internal chamber and first divider wall (54) for separating the internal chamber into at least two sections (56,58). A carrier framework (60) is removably mounted on the mold box (42) and includes a peripheral seal for perfecting a seal between the mold box (42) and the powder box (52) when the same are connected thereto. A second divider wall (64) is connectable to the first divider wall (54) separating the inner mold surface into two chambers continuous with the two sections of the powder box (52). The carrier framework (60) further includes a mold surface seal (66) for perfecting a seal between the second divider wall (64) and mold surface (48).

Abstract: A tool for manufacturing the two tone plastic shell includes an electroformed mold (28) having a first surface (29) for forming a front of a shell; a second surface (32) for forming the side edge portion of a shell; and a third surface segment (34) for forming a return flange on a door shell and the third surface segment has a cut-out opening (36) therein and a runout surface (40) providing for entry and removal of a seal and divider wall assembly to seal against a sealing rib (38) in the mold which separates the first, second and third segments into first and second casting surfaces. The divider rib and runout surface are sprayed with thermoplastic material to form a joint between material cast on the first and second casting surfaces and a skin return flap for sealing the cut-out opening.