Abstract: A foldable device includes a flexible display including a first portion, a second portion, and a third portion disposed between the first portion and the second portion; a body including a first support portion which supports the first portion of the flexible display, a second support portion which supports the second portion of the flexible display, and a third support portion which supports the third portion of the flexible display; a hinge including a first rotation axis which connects the first support portion to the third support portion, and a second rotation axis which connects the second support portion to the third support portion; and at least one slot hole which shifts the first rotation axis and the second rotation axis along an inner surface of the at least one slot hole when the first support portion and the second support portion rotate.

Abstract: A foldable device includes a flexible display including first, second, and third portions; a body including first, second, and third support portions which respectively supports the first, second, and third portions; a hinge including a first rotation axis which connects the first support portion to the third support portion, and a second rotation axis which connects the second support portion to the third support portion; and a slot hole which is rotatably coupled with the first and second rotation axes, and which moves the first rotation axis and the second rotation axis when the first support portion and the second support portion rotate with respect to the third support portion. The first and second rotation axes allow the first and second support portions to rotate with respect to the third support portion when the flexible display changes from an open state to a closed state.

Abstract: A foldable device includes a flexible display including first, second, and third portions; a body including first, second, and third support portions which respectively supports the first, second, and third portions; a hinge including a first rotation axis which connects the first support portion to the third support portion, and a second rotation axis which connects the second support portion to the third support portion; and a slot hole which is rotatably coupled with the first and second rotation axes, and which moves the first rotation axis and the second rotation axis when the first support portion and the second support portion rotate with respect to the third support portion. The first and second rotation axes allow the first and second support portions to rotate with respect to the third support portion when the flexible display changes from an open state to a closed state.

Abstract: An electric all-dimensional numerical control injection molding machine is applicable to production of injection products with high precision and complex three-dimensional shapes. The machine comprises a machine base, a main board, four sets of electric mould guiding devices, a cross-shaped chute mould assembly, and an injection device assembly. The electric mould guiding devices are mounted on a front face of the machine. A slider mould is disposed in a chute of a cross-shaped mould base, is connected to a shaft of an electric driver, and implements mould opening and closing functions by means of linear movement of the shaft of the electric driver. An injection system of the machine is used for injecting plasticized, fused, and homogenized plastic materials into a mould cavity of the mould.

Abstract: A metal molding machine includes a fixed mold and a movable mold, a fixed platen holding the fixed mold, an end frame coupled to the fixed platen by tie rods such that the end frame is fixedly mounted on a bed, a movable platen guided by the tie rods, the movable mold being held by the movable platen, and a rolling support mechanism supporting the movable platen. The rolling support mechanism includes a swingable arm, a wheel disposed on a portion of the swingable arm that is closer to the fixed platen and held in rolling contact with the bed, and a spring disposed on a portion of the swingable arm that is closer to the end frame. The spring is interposed between the swingable arm and a portion of the movable platen, for applying a resilient force in a direction so as to lower the wheel.

Abstract: A molding machine able to detect a burr or other abnormality by detecting the position of tie bars. A control device detects an occurrence of burrs according to whether or not displacement amounts of pistons associated with the tie bars, using position sensors which detect the position of the pistons. The position sensors detect position from the start of injection to the completion of the injection to determine whether detected values are within a permissible range.

Abstract: A die-casting die having a plurality of laterally movable slides is provided with a plurality of hydraulic cylinders located and carried internally within the die and connected with the plurality of slides to move the slides between cavity-open and cavity-closed positions.

Abstract: Disclosed is a molding-system platen actuator, including: (a) a platen-stroke actuator including: an electrical actuator, and a guide bushing being connected with the electrical actuator; and (b) a mold-break actuator being in-line with the platen-stroke actuator, the mold-break actuator including: a hydraulic actuator having: a piston being strokable along an in-line housing, and air pressure being generatable between the piston and the guide bushing, and the air pressure being useable to push the piston backwardly.

Abstract: A die opening and closing system includes a fixed die plate holding a fixed die, a moveable die plate holding a moveable die able to move in a horizontal die opening and closing direction with respect to said fixed die plate, only one ball-screw feed mechanism moving said moveable die plate in a die opening and closing direction, and only one balance cylinder system reducing a load of said ball-screw feed mechanism and a die opening and closing method related to the same.

Abstract: To provide a mold clamping apparatus able to suppress spout of a molding material from between mating faces of dies and to extend the lifetime of the dies. A mold clamping apparatus has a control apparatus deciding a distribution of a load divided by a plurality of tie bars based on information concerning to the die and controlling pressure of driving oil of a cylinder chamber of each cylinder for mold clamping independently to become a load having a determined distribution.

Abstract: A high pressure die casting method including providing first and second accumulator assemblies, wherein the first accumulator assembly provides pressurized fluid toad die assembly while the second accumulator assembly provides pressurized fluid to remaining portions of the die casting machine. A barrel insert loader inserts cylinder barrels into the die assembly, and then the dies are closed to permit molten aluminum to be injected therein and thereby form the cast engine block. The dies include side gates and sub-gates through which molten aluminum is introduced into the mold. The dies are opened, and the cast engine is removed from the dies by operation of a robot arm, and a die spraying assembly is inserted between the open dies and sequentially sprays the dies, to clean and cool the dies in preparation for a subsequent casting operation.

Abstract: A plug for sealing and resealing the passages for heating and cooling liquid in a casting mold. The plug includes a stainless steel socket head NPT plug which is screwed into the passage to seal it. Inboard of the plug there is mounted a resilient expandable silicone tubular element that is expanded by squeezing it to further seal the passage.

Abstract: A hydraulic press apparatus comprises: a lower plate and an upper plate adapted to be driven toward the lower plate via operation of a motion a position control device; a hollow cylinder under the lower plate, the hollow cylinder having an upper edge tightly engaged with a lower surface of the lower plate; a guide column connected to the upper plate, the guide column having a lower end portion that defines a rod for a first piston adapted to slide within the hollow cylinder, and the guide column defining an inner cylindrical cavity that extends through the first piston, with the inner cylindrical cavity being filled with hydraulic fluid; a hole extending through the lower plate, the hole being adapted to slidably accommodate said guide column; an aperture in a side surface of the hollow cylinder, the aperture allowing a volume defined between the lower plate and the first piston to communicate with a hydraulic device that is adapted to apply a hydraulic pressure within the volume when the first piston is in a

Abstract: A permanent mold casting system has a modularized architecture and remote placement of certain portions of the casting system. The casting system has a frame and a casting module supported on the frame is adapted to receive a plurality of molds for casting articles from a fill material according to a casting process. The casting module includes first motive actuators for moving at least portions of the molds during the casting process. An accessories module is supported on the frame and comprises at least one accessory device and second motive actuators for selectably positioning the accessory device in relation to the casting module. A utility module is located remotely from the frame and comprises motive power supplies coupled to the first and second actuators. The utility module also comprises a programmable controller coupled to the motive power supplies for controlling the casting process.

Abstract: A casting apparatus for vehicle wheels includes a bottom core or face core mold segment affixed to a stationary bed and a top core mold segment affixed to a vertically movable head; a pivotally mounted side mold positioning arrangement of minimal bulk and mass is provided for each of the four, or greater number of side molds. Side mold segments are each connected by a linkage to the movable head to move vertically upwardly and downwardly while permitting independent lateral, typically arcuate, movement. Actuators in the form of hydraulic, pneumatic, or other linear actuators for each of the side mold segments are controlled to move each segment inwardly or outwardly; electro-mechanical or pneumatic actuators could alternatively be employed. A locator ring latching mechanism is provided for retaining the side cores in closed position which engages tabs on the bottom of the side cores to seat on and seal with the bottom core.

Abstract: A vertical adjustment device for a mold closing unit of a hot chamber die-casting machine is provided with a shear mechanism. An electrical servomotor is provided as a drive assembly for spreading the shear mechanism apart, with the axis of the servomotor being parallel to the guide surface for the shear mechanism and driving, through an angle transmission, a spindle oriented at less than 90° with respect to the drive axis of the servomotor. One end of each of the two lever pairs of the shear mechanism is connected pivotably with the closing unit or with the machine frame. The other ends are supported on the guide surface and the machine frame and on a guide surface of the closing unit.

Abstract: A die casting machine has obliquely slidable die core pieces in an ejector holder block. The ejector holder block may be drawn away from the stationary die half into abutment with an ejection box by linear actuators; complementary male and female surfaces on the ejector holder block and ejection box precisely locate the ejector holder block with respect to the ejection box when the two are in abutment. The ejection box and mated ejector holder block may then be moved into abutment with the stationary die half to complete a die cavity.

Abstract: A die casting machine having a frame comprising two connecting rods, two side platens, a moving platen, connecting rod apertures in said moving platen, a moving platen drive and two dies, wherein one side platen is connected to the two connecting rods, the other side platen is connected to the opposite ends of the two connecting rods, the moving platen is guided by said two connecting rods for movement towards or away from respective side platens by said moving platen drive, one die mounted on one face of the moving platen and the other die mounted on the inside face of one side platen, all said platens being located in parallel planes at right angles to the centerline of the machine, the two connecting rods, the moving platen drive and the dies being in a common plane passing through the longitudinal centerline of the die casting machine.

Abstract: A press casting machine (2) is provided with a stand (4) and a lower stationary machine table (5), from which bearers (6) project upwards, supporting an upper vertically displaceable machine table (7). A tool half (9 and 10 respectively) is connected to each machine table. These halves form, jointly with inserts, cores, etc., mounted in the halves, a parent tool (8). In order to be able to exchange inserts, to service the machine etc. the tool halves can be disconnected from and reconnected to the respective machine table through an external control, and the entire parent tool can be lifted by means of the upper machine table and be positioned on a tool carriage (60), which can be run out of the press casting machine and onto a main carriage (61), which runs on floor rails (64) and which can support a second parent tool for a quick exchange.

Abstract: A casting machine having a mold closing and opening cylinder for moving a movable die plate with a movable die relative to a stationary die plate having a stationary die, and a mold clamping cylinder each having a cylinder housing and a piston which partially define a first and a second fluid chamber whose volumes increase when the movable die plate is moved toward and away from the stationary die plate, respectively, by the mold closing cylinder. The clamping cylinder is connected to a hydraulic circuit, which permits a fluid to flow between the first and second chambers through a connecting line when the movable and stationary die plates are moved relative to each other by the closing and opening cylinder. The hydraulic circuit is adapted to apply a fluid pressure to the first fluid chamber to clamp the movable and stationary dies together after the movable die is brought into abutting contact with the stationary die by the closing and opening cylinder.

Abstract: One of a drag platen and a hold furnace for low pressure die casting, having a riser pipe projected from the upper part thereof, is made to be elevatable, and the drag platen on which a drag is set is made to be movable between a first position right above the hold furnace and a second position where the drag is away from the hold furnace while a cope platen to which a cope is set is made to be elevatable. At the first position, the cope platen is lowered so as to match the cope with the drag, and at the second position to which the drag platen is moved, the drag is accessed.

Abstract: A slidably attachable automated hydraulic cylinder system opens and closes the die halves of a casting machine. Cylinders are provided having integral vertical side grooves for mounting on the casting machines. The preferred hydraulic cylinder has a hollow piston rod connected to the piston and projecting from one end of the cylinder. A fluid flow line movable within the cylinder projects from the other end of the cylinder and slidably passes through the piston into the piston rod. Separate elements contact the piston at opposite ends of its stroke to move the fluid flow line and switch the fluid flow in the cylinder.

Abstract: A die-casting machine is described which includes at least one cylinder/piston assembly. Each assembly has main, ejector and core pistons and cylinders. The main cylinder is stationary and holds a piston which reciprocates to bring the molds together for metal injection or apart for releasing a die casting. A portion of the interior of the main piston constitutes an ejector cylinder having an ejector piston and a portion of the interior of the ejector piston constitutes a core cylinder having a core piston. The present invention is more compact and less complex than conventional die-casting machines.

Abstract: The die for the production of piston blanks having high dimensional accuracy comprises an integral body and crown forming part with separate internal and pin boss bore cores and a single runner and feeder. Metal utilisation is greatly increased and fettling costs are greatly reduced.

Abstract: In a die casting apparatus, mold opening/closing units are mounted on carriers and the carriers are freely moved in/out from a mold clamping unit in a lateral direction. The mold clamping unit includes at least two guides for guiding each of the carriers from a standby position to a predetermined position in the mold clamping unit and a stationary board having a higher portion formed at a portion sandwiched by the guides. Each of the carriers includes a lift unit for moving upward/downward the mold opening/closing unit. When each of the carriers is to be moved, the lift unit positions the mold opening/closing unit at a height at which the mold opening/closing unit can freely move without colliding against the higher portion, moves the mold opening/closing unit into the mold clamping unit, and then moves downward and places the mold opening/closing unit on the higher portion of the stationary board.

Abstract: A horizontally movable die has a bottom slide and cooperates with a stationary die in a die casting machine, which machine has a vertical injector for molten metal mounted underneath the dies and oscillatable to an acute angle to the vertical from under the dies for filling with molten metal. The outwardly movable shot sleeve of the injector seats in two semi-annular docking blocks, one mounted in the stationary die and the other mounted on an outward projection or extended portion of the slide on the movable die. Thus, when the dies are closed, the two semi-annular docking blocks for the shot sleeve form an aperture completely within the stationary die, which aperture communicates with an outwardly tapered trough duct that extends to the casting between the dies. This trough configuration forms a sprue in the stationary die that permits the separation of the movable die from the stationary die and then the retraction of the bottom slide without obstruction by any part of the sprue or the casting.

Abstract: A stationary die for a horizontal die casting machine has an oscillatable molten metal injector below the die that oscillates from an acute angle outside the die for filling with molten metal to an acute angle under the die or injecting the molten metal into the die. The stationary die has an annular docking block at the same acute angle to the horizontal as the axis of the shot sleeve under the die. The edge of the aperture at the outer end of the docking block is adjacent to and substantially in the plane of the parting surface of the stationary die so that the docking block per se projects outwardly from the surface. Correspondingly, the adjacent parting surface of the movable die is provided with a cavity for fitting this projection of the docking block, but since the surfaces of this docking block are at convergent acute angles, they provide no restriction to the movement of the movable die.

Abstract: A vertical die casting apparatus comprises a mold clamping unit having a mold axis and a tilting injection unit. The mold clamping unit in cooperation with a machine base is made to swing about a rotation axis from a normal horizontal axis position at which the mold axis extends horizontally and the injection unit is actuated for a vertical injection, to a vertical axis position at which the mold axis extends vertically, and a disintegratable core incorporated in the mold to define a mold cavity.

Abstract: A mold clamping device includes a frame, a fixed base for supporting a first mold, the fixed base being fixedly mounted on the frame, a movable base for supporting a second mold, the movable base being movably mounted on the frame in confronting relation to the fixed base, first means on the frame for driving the movable base to move rectilinearly toward and away from the fixed base, a cam follower supported on the movable base, a cam supported on the frame and having a cam surface held in contact with the cam follower, and second means for driving the cam in a mold clamping stroke to displace the cam follower for enabling the movable base to clamp the second mold firmly against the first mold on the fixed base, the cam surface being defined by a cam follower displacement curve having a gradient which is greater at an initial stage of the mold clamping stroke and becomes smaller as the mold clamping stroke progresses.

Abstract: An apparatus for producing a compound material such as a fiber reinforced metal comprises a first retaining chamber into which molten matrix metal e.g. aluminum etc. is introduced, a plunger for applying a pressure to the molten matrix metal positioned below the first retaining chamber, a second retaining chamber adapted to receive reinforcement materials e.g. fibrous ceramics called "whisker", the second retaining chamber being in vertical alignment with the first retaining chamber so as to communicate therewith, a clamping device positioned above the second retaining chamber and supported movably in a vertical direction, and heating means provided in the first and second retaining chambers. The apparatus thus configured makes it possible to easily impregnate the molten matrix metal into space between the reinforcement materials, thus producing a reinforced compound material with high quality.

Abstract: In an ingot mould casting device for casting a melt, the ingot moulds (1, 1a, 1b) of the individual ingot mould units (35, 36, 37) are movable in a U-shaped clamp (13), wherein at the free ends (43) of the U-shaped clamp (13) there is provided an ingot mould holding- and pulling-apart mechanism. With the aid of this ingot mould holding-and pulling-apart mechanism, the ingot moulds are opened so far, after casting has been effected in the casting position, until the resistance during pulling-apart of the ingot mould (1, 1a, 1b) drops to the resistance with respect to the shifting of the ingot mould half (1b) movable on the guide rods (2). In a second phase, the movable ingot mould half (1b) is moved completely away from the non-movable ingot mould half (1a). The discharged parts fall onto the conveyor belt (18). The entire operation from the actuation of the starting button (42) of an ingot mould arrangement can take place automatically.

Abstract: A hot chamber die casting machine for a processing of molten metals. The die casting machine includes a frame having a slanted surface for accommodating a closing unit. The closing unit is operable from a crosshead by way of a toggle lever mechanism and is mounted on guide bars supported at the frame. The closing unit includes two mold mounting tables which are adapted to be pressed together. A scissors-type linkage mechanism is disposed below the closing unit and includes transversely joined levers with a drive arrangement being provided for spreading the linkage mechanism so as to enable an adjustment of the closing unit.

Abstract: A squeezing caster comprises a bed which carries a bottom plate, an intermediate carrier member, and two dies. The intermediate carrier member is of the split type. Each of the dies is mounted on a crosspiece and provided with a mechanism which drives it along the intermediate carrier member. The crosspiece is rigidly attached to said mechanism accommodated in a housing which is mounted on the intermediate carrier member. The die driving mechanism comprises a rack and four pushers. On the external surface of each pusher there is a buttress thread meshed with an internal thread of a gear whose outer teeth are meshed with the rack. One of the racks is intended for connection to a rod of a drive cylinder and provided with a link which is kinematically coupled to the other rack. The caster also contains a means for a preliminary advance of one of the dies.

Abstract: A method and arrangement for setting metal molds on a press bolster are disclosed. A plurality of spaced bearing units are arranged in a press bolster wherein freely rotatable main large balls of the bearing units protrude at their tops slightly above a level of an upper surface of the bolster so as to cooperate to freely slidably support a combined set of an upper and a lower molds placed thereon, for positional adjustment of the molds to a desired exact position on the bolster.

Abstract: With low-pressure or die-casting methods there frequently occur leaks during the transfer of the molten metal from the metal containing basin or vessel to the mold. These leaks often lead to serious accidents and related operating interruptions. According to the invention these problems are solved by a casting method, wherein all movements of the mold occur in a vertical plane. With a preferred embodiment of apparatus for the performance of the method the mold is placed in a positive or form-locking manner with its casting or pour opening upon the casting hole of the metal containing vessel or basin and pressed against the latter in a fluidtight fashion by means of a pneumatic lifting cylinder. This affords the advantage of a simple connection of the mold with the basin and without requiring a coupling mechanism, and, additionally, the heating of the riser or up tube and/or immersion tube can be omitted, which otherwise conventionally was performed by gas heating.

Abstract: In a horizontal pressure die-casting machine having two fixing plates, each for one die the invention comprising a one of the fixing plate being pivotable into a horizontal position about a horizontal axis, and assembled of two parts, namely a base plate and a mounting plate. In the horizontal position, the die to be carried by the mounting plate and, provisionally, also the die to be carried by the stationary fixing plate can be exactly mounted and a cast produced can easily be removed. To take up the strong pressing forces occurring during a casting operation, the movable fixing plate which is pivoted back into its vertical position, is mechanically locked to the fixing plate, and the die to be carried by the latter is transferred thereto for final securing.

Abstract: The invention relates, in a chill-molding machine, to an adjustable device for coupling the driving yoke of the side parts of a mold to a jack for operating this yoke. This device is constituted by a part fast to the rod of the jack mounted to slide in the transverse part of the yoke and immobilizable in this part by a clamp borne by the yoke. The invention has application in the foundry field.

Abstract: A die casting machine for manufacturing impellers made of Ni-, Co- or Fe-based heat resistant alloys. A die assembly which is provided with a plurality of radially retractable segments, is coaxially arranged and vertically movable with respect to an injection assembly. Die casting is effected in the lowermost position of the die assembly with the segments closed. The product is ejected out of the machine in the uppermost position of the die assembly with the segments retracted. A short runner minimizes heat dissipation of the molten metal and improves uniformity and quality of the product.

Abstract: A pull-back ram cylinder apparatus in combination with a vertical mold clamping machine to be incorporated in a vertical molding or casting machine. The pull-back apparatus comprises a hydraulic cylinder for actuating a hollow ram. A ram extension consisting of the ram and a ram rod extending into the ram in a thread engagement is slidably fitted in the cylinder. The ram rod extends downwardly from the cylinder and is connected to a movable platen of the clamping machine carrying a movable mold. The cylinder has a lower throttle portion in which radial openings for discharging an operation oil are formed in an axially spaced arrangement. The inner diameter of the throttle portion is slightly larger than the outer diameter of the ram. The throttle portion having the axially spaced openings serves, in cooperation with the head end portion of the ram, as buffering means by which the movable mold is allowed to come into contact gently with a stationary mold.

Abstract: Apparatus for detachably mounting molds on die plates of, for example, a die casting machine, which comprises a casing slidable on the die plate, a wedge member located within the casing and in contact with the inner surface thereof and a clamp lever located in the casing to be rotatable about a shaft attached to the casing and in contact with the inclined surface of the wedge member at one end. A clamping member to clamp a mold half in the die plate is provided for the other end of the clamp lever. The wedge member and the casing are moved by a hydraulic drive engaged with the wedge and there is provided a member for resiliently urging the one end of the clamp lever against the inclined surface of the wedge member.

Abstract: A hot chamber pressure casting machine of the type having a gooseneck for drawing molten metal from a reservoir and injecting it into at least one die set movably mounted on a back plate. In one aspect of the invention, a track is provided on the back plate along which closure means for the die is adjustable. In another aspect of the invention, the back plate is in or near a vertical plane and the gooseneck nozzle has a passage, a major part of which lies in or near a horizontal plane when the nozzle is engaged with the die, and the end portion of the passage is inclined upwardly from the major part to the end.

Abstract: A die casting unit employing plural die members and core members which are used in closed position for die casting shaped articles of unusual configuration and particularly articles which are comprised of two or more subcomponents arranged or joined in interconnected assembly, an example of such shaped article being the slider body and pull chain used on slide fasteners. Movement of at least the die members during the molding cycle is effected by rotation of a ring member carrying structure which cooperates with structure on the die members to slide the die members between their open and closed positions.

Abstract: A die member in an ejector die assembly is movable obliquely with respect to the axis of movement of the ejector die assembly. Backup plate means is connected to the ejector die assembly by a lost motion connection. The backup plate means locks the die member by direct engagement with the die member in the machine closed position and is moved away from the ejector die assembly in the machine open position to permit withdrawal of the die member from the die cavity.

Abstract: An apparatus for making foundry cores. A pair of support plates, each of which carries a core box half, are mounted on carriages and the carriages are movable toward and away from each other to bring the core box halves into mating relation. Mounted above the support plates is a reciprocating carriage that carries a sand head and a gas head. The carriage is initially positioned to locate the sand head beneath a hopper where the head is filled with sand impregnated with an uncured resin binder, and the carriage is then shifted to position the sand head over the core box and the sand is blown into the core box. The carriage is then returned to its original position so that the gas head is positioned over the core box, and a gas, which serves as a catalyst for the resin binder, is introduced into the core box to cure the resin. A manifold system is incorporated in the support plates so that the gas discharged from the core box is passed through a scrubber before being discharged to the atmosphere.

Abstract: A casting device with a mold section attached to a fixed platen, a mold section attached to a movable platen, a drive unit to move the movable platen in relation to the fixed platen, coupling rods connecting the movable platen to the fixed platen when the two mold sections have fully or closely approached each other and hydraulic pressure mechanisms capable of closing completely the mold sections, and keeping them closed, against the high internal injection pressure. Each platen, on the side removed from the mold sections, is provided with a rigid frame and with a number of hydraulic rams, together forming the above-mentioned hydraulic pressure mechanism, distributed between the platen and its rigid frame and the coupling rods are disconnectably connected with the circumference of both rigid frames so as to connect these frames with compressive stress or tensile strength by means of the double-acting rams, when the mold sections have fully or closely approached each other.

Abstract: A low-pressure metal repetitive casting apparatus comprising a large capacity fluidtight vessel containing liquid metal to cast, in particular a high melting point metal; an upwardly open supply pipe partly extending into the vessel through a wall of the vessel and having a lower end immersed in the metal; a source of gas under pressure; a device for selectively putting the source in communication with the interior of the vessel and closing off said communication; and a series of blind sand moulds each defining at least one mould cavity, a main runner whose sectional size is in the neighborhood of the sectional size of the supply pipe and communicates with the mould cavity and has a lower open end portion capable of being adapted for connection to an upper end portion of the supply pipe, and at least one secondary runner which puts the main runner in communication with the mould cavity and has a cross-sectional area so calibrated that, during the casting, the solidification time of the secondary runner is sli

Abstract: Die casting apparatus for casting parts such as rotors or the like comprises a three tie bar horizontally disposed die casting machine, with an indexing mechanism mounted on one of the tie bars for rotating the parts through six separate radially spaced work stations. The work stations include loading, casting, cooling, skew pin ejection, and unloading stations. The casting station includes a four plate die assembly comprising a runner plate, cover die, carrier plate, and ejector die. The die assembly employs pin-point gating and is formed such that the cast part is removed from the die and the runner system, and the runner system is ejected from the apparatus, while the part is at the casting station. A movable runner ejector plate having ejector pins ejects the runner from the runner plate. A compensating cylinder is provided for adjustment for variance in stack height.

Abstract: Low-pressure casting apparatus is disclosed and includes a holding furnace having a cover, an ingot mold positioned on top of the furnace cover, a riser pipe connecting the holding furnace with the interior of the mold, upright tension rods to vertically move the cover plate of the mold, two opposite, upright flat members attached to rear portions of the sidewalls of the holding furnace, a horizontal bridge structure mounted between the flat upright members and having a U-shaped slot in which is horizontally slidably mounted a tension element, and means to horizontally move the tension element. The apparatus is improved by brackets vertically adjustably mounted on the upright flat members with the bridge structure being pivotably mounted between the brackets.

Abstract: A piston molding machine comprising a base on which a pair of mold supports are mounted for movement in a straight line toward and away from one another. A mold half is mounted on each support, and when the mold halves are juxtaposed they provide a cavity for forming a piston. A mold cap is pivoted to each mold half about a transverse axis rearwardly of the face of the mold half. A piston motor extends between each cap and its respective mold support for pivoting the mold cap into position adjacent the mold half to define the top of the cavity and away from the mold half to provide clearance for removal of a piston formed in the mold.

Abstract: A die casting machine is described and includes a frame supporting two pairs of spaced, parallel cylinder assemblies with each pair of assemblies carrying a mold half and being opposed to the other pair of assemblies which carry the other mold half. Each cylinder assembly of each pair comprises a stationary piston secured to the frame; a piston shaft secured to and co-axial with the piston, the shaft extending across to a connection with an opposed piston of the other pair; and a cylinder is mounted on the piston and shaft for reciprocal movement thereon in response to fluid injected therein on either side of the piston. Means connect the cylinder to their respective mold halves whereby injection of fluid into the cylinders at the crown ends of the pistons forces the two pairs of cylinders and two mold halves together and fluid injection at the skirt ends of the pistons forces the cylinders and mold halves apart.