Abstract: A resin injection metal mold unit comprising, in combination, a metal mold consisting of a cavity section and a core section, and stationary and movable metal mold supporting members for releasably holding the metal mold sections in the opposing relationship. Each supporting member has a plurality of clamping members for engaging an associated mold section. Each clamping member has a clamping slant in the complementary relationship with the counter slant chamfer of the mold section. Such members are slidably attached to an associated supporting member so as to move close and apart from the mold section. When a mold section is fixed to an associated supporting member, the clamping members are brought in contact with the mold section with their clamping slants closely fitting the counter chamfer slants of the mold section, and then clamping members are fixed to the supporting member by driving associated bolts, thereby pushing and holding the mold section against the supporting member.

Abstract: A vulcanizing mold for tires of vehicles. The mold includes an upper and lower sidewall part, and a closure ring that has a conical inner surface and is intended for a tread-molding ring. The guide mechanisms are provided on the conical inner surface for guiding, in a sliding manner, sliding shoes. Segments that form the tread-molding ring are rigidly connected to the sliding shoes. Sheets of sliding material are disposed on those portions of the conical inner surface that are subjected to pressure.

Abstract: A component changing apparatus which serves a group of injection molding machines has a transport carriage arranged for travel on a carriage track oriented parallel to the injection axis of each injection molding machine, between a storage magazine and a selected injection molding machine. A platform is mounted on the transport carriage for rotation through at least 180.degree. about a vertical axis. The platform defines an emplacement for holding a mold to be carried by the transport carriage. A mold guide is mounted on the platform for guiding the mold for a horizontal displacement into and out of the emplacement of the platform. Transport tracks are formed by the mold guides on the carriage and on the respective mold changing table and by the mold guides on the carriage and in a selected storage compartment when the transport carriage is in a coupling position adjacent one of the mold changing tables or the storage magazine, respectively.

Abstract: A quick-switch mold set is depicted wherein the interchangeable mold plate is carried by a T-plate slideable in grooves provided by a top clamping plate which is secured to the upper platen of the molding machine. A lower interchangeable mold plate is carried by an intermediate T-plate slideable in grooves provided in a bottom clamp housing. Removable and rotatable clamps are secured to the top clamping plate and other clamps to the bottom clamp housing. The clamps are disc-like, having two flats providing reduced portions that are positioned in way of a T-plate and mold plate during removal and interchange. The clamps are repositioned and tightened to provide the desired securement and retention of the mold plate and T-plate.

Abstract: A mold closing unit for an injection molding machine has an exchangeable injection mold assembly; a mold exchanging device; a conditioning table situated adjacent a clamping space of the mold closing unit; and a supply line coupling for connecting to and disconnecting from, one another conduit terminals of mold-side supply conduits and machine-side supply conduits. The supply line coupling is formed of a mold-side coupling half fixedly attached to the mold body and a machine-side coupling half arranged to be movable between the conditioning table and the clamping space. The mold-side coupling half and the machine-side coupling half are joinable to and disconnectable from, one another along a horizontal parting plane of the supply line coupling for joining the machine-side and mold-side conduits to one another for preheating the injection mold assembly on the conditioning table.

Abstract: A machine for making concrete pipe in which multiple-form sets can be coupled into one module so as to increase production output of the machine without an increase in machine manpower. The multiple-form modules are provided with adapters that make them compatible with conventional single-mode form sets and all cycles of production so that multiple-form modules can be used simultaneously with single-mode form sets. The multiple-form sets also utilize core vibration throughout the fill cycle, but unlike conventional core vibration systems, the amplitude and direction of vibration are continuously varied to distribute the vibration uniformly throughout the length of the pipe being formed.

Abstract: A tire manufacturing mold comprising a profile ring having a contour corresponding to the outer profile of a tire being molded, including at least the tread thereof, and a net ring having a faying surface for making contact with the contour surface and consisting of ribs and/or lugs for forming the grooves of the tire being molded. The net ring is disposed on the contour surface of the profile ring. The profile ring and/or the net ring has gas vent members embedded so as to form gas vent gaps on the periphery thereof; and the gas vent gaps formed on the periphery of the gas vent members being constructed as gas vent passages.

Abstract: A thermoformed plate having a rim adapted for embossing thereon a decorative pattern is provided. The rim has a generally curved profile which eliminates stress concentration points, providing greater stiffness and strength to the plate. A dual member mold useful in the production of the plate is also provided. The mold has corresponding male and female members, and contains an interchangeable annular insert in that portion of the surface of the male mold member that defines the rim of the plate. The desired decorative pattern for the plate is contained on the annular insert, allowing changes to be made in the rim pattern of plates produced by the mold without the need to replace the entire mold.

Abstract: Apparatus and a method are described for providing positive location openings within a contoured panel. These openings are utilized in conjunction with appropriate locators to assure that positive alignment of the molded panel in subsequent manufacturing operations is obtained. The specific die and headline constructions are likewise disclosed.

Abstract: A tool to be mounted on a machine with receiving plates has tool halves which are movable relative to one another, and each mountable on the respective one of the receiving plates of the machine, by fast clamping plates mountable on the receiving plates of the machine, and by fast coupling formations which are rigid, and releasably connect the two halves with the fast clamping plates. The fast coupling formations include a plurality of receiving openings provided in the fast clamping plates, and a plurality of clamping pins which extend laterally beyond the tool halves, and are received in the receiving openings.

Abstract: Plastic molding apparatus including a horizontal molding press with two platens and a mold having an ejector mold half and a cover mold half that form a mold cavity, each mold half being secured to a platen with at least one platen movable horizontally relative to the other platen to and closed positions. The molding press has longitudinal rails along the top thereof parallel to the direction of relative movement of the platens. There is an elongated horizontal gantry structure supported solely by the press and movably secured to the rails with the longitudinal axis of the gantry structure being oriented normal to the rails and the gantry is movable along the rails. There are two arms, one of which depends from one end of the gantry and the other depends from the opposite end of the gantry, and these arms are movably secured to the gantry for back and forth movement along the longitudinal axis of the gantry.

Abstract: A molding machine for making bricks, etc. having a mold open on both ends and opposed plungers for cooperation with the mold, the mold and plungers being removable and replaceable as a set.

Abstract: A method for manufacture of aerated concrete or other similar calcium silicate hydrate products. An optimal utilization of the investment for erection of the plant is achieved by keeping the time for the stiffening of one cast body shorter than the pacing time between two consecutive pourings of mix. A suitable way to achieve the short stiffening time is to use an extremely highly reactive binder.

Abstract: This relates to a blow molding apparatus of the rotary wheel type and particularly relates to supplying fluids, such as air, vacuum and water to a mold half and its associated carrier in a manner which permits the reciprocation of the mold half and associated carrier between a mold open position and a mold closed position. This is facilitated by the use of short lengths of hose which are attached to respective manifolds by swivels. The swivels permit the ends of the hose to change their angular relationship as one end of each hose moves relative to an opposite end of the hose. Adjacent ones of the hoses are located in adjacent parallel planes and are initially bowed in one direction and reverse their direction of bow as movable ends of the hoses move beyond fixed ends of the hoses. The carrier for the movable mold half has associated therewith a cam follower for engaging a cam which effects the opening and closing of the mold.

Abstract: A rotary mold having a removable rotary mold segment of truncated sectorial shape having top, bottom, side, and end wall surfaces wherein the top arcuate surface is adapted for molding, and the generally planar bottom surface is connected to the top surface by two end walls in radial alignment with the axis of rotation defining the arcuate top surface wherein the bottom surface joining said end walls is in perpendicular alignment with one of said end walls.

Abstract: There is described a tire vulcanizing press, comprising a frame provided with a lower supporting plate for allowing a mold for vulcanizing the tires to rest upon, and an upper plate that is mobile with respect to the lower plate. The mold comprises a lower cheek, an upper cheek that is mobile with respect to the lower cheek, and a series of sectors, that are mobile with respect to an annular-containing element, each of which is radially mobile with respect to the upper cheek. The mold further comprises a connecting means for fixing the lower cheek to the lower plate, and the upper cheek and the annular element to the upper mobile cheek, and which comprises a series of rotating bodies on the lower and upper plates which are actionable from the outer side of the plates with respect to the mold.

Abstract: Apparatus is disclosed for making sheet-plastic articles, such as lids for disposable drinking cups, by vacuum forming. The invention provides spacers that fit into the holes in the stripper plate of the apparatus for the purpose of matching the size of the hole closely to that of the die impression. The spacers are flanged and in three segments, the segments being so arranged that two of the segments can be first placed in the hole, their flanges being entered into a groove in the hole, then the third is located in the hole and maneuvered radially outwards until its flange too is located in the groove. The segments are retained in place with a spring ring. The segmented spacers can easily be inserted at arm's length and by feel alone. The spacers are themselves radially thin so that the holes in the stripper plate can be packed tightly together.

Abstract: Novel and improved means for retaining an indicia forming member on a tire mold. The structure for accomplishing this involves a latch mechanism which is operable both to selectively latch the indicia forming member to the mold and to assist in the ready removal of the member from the tire mold.

Abstract: A mold changer for an injection molding machine has a carriage with two mold stations mounted next to the molding machine. The carriage is movable parallel to the tie rods (or platen movement) of the molding machine to position a selected work station in register for mold changing. There are rollers on the machine platens and at each carriage work station to support the mold weight while permitting lateral movement of the mold into or out of the machine or carriage as part of mold changing. Separate drive means to power such lateral mold movement are on each of the machine and carriage. Each of the drive means selectively moves a mold the first part of the way from the device in which it is mounted (i.e. machine or carriage) into the other device (carriage or machine) and at some point the drive means in the receiving device assumes driving and completion of the mold change. The mold is constructed and arranged to engage and disengage the drive means.

Abstract: The packaging machine has a molding station comprising a reciprocating molding die for shaping thermoplastic sheet material to form packaging containers. Reciprocating drive is transmitted to the molding die by first engagement means provided laterally thereon and cooperating second engagement means provided laterally of the moving path of the molding die and opposite the first engagement means. The molding die may be moved into a retracted position at one end of its moving path, and when in this retracted position, the first and second engagement means are disengaged so that the molding die and any members secured thereto may be readily removed for replacement thereof and/or of molding inserts provided in a lower part of the molding station. In a preferred embodiment, the first and second engagement means are formed by a driving chain and engagement members, respectively, the engagement members being shaped to engage the chain links.

Abstract: In a plastic or die cast molding machine having opposed stationary and movable platens adapted to receive, mount and support a sectional plastic or die cast molding die having stationary and movable clamp plates, opposed quick change locator clamp assemblies mounted upon the platens, each clamp assembly including a body plate secured to a platen. Laterally spaced index pins project from the body plate for receiving corresponding spaced locator slots in the clamp plates. Longitudinally spaced opposed pairs of plate clamps are adjustably and guidably mounted upon opposite sides of the body plate adapted to receive and retainingly engage opposite sides of a clamp plate.

Abstract: An injection molding machine having in spaced positions at least a first injecting station for injecting a plasticized resin material into a die cavity and a second station for further treating the injected resin material concurrently and in relation with the injecting operation at the injecting station, the molding machine including a die carriage movable to and from the first and second stations and fixedly supporting thereon at least a lower die of an injection molding die set; a track for guiding movements of the die carriage to and from the respective stations; a carriage clamp for fixing the die carriage at the respective stations; a die closing mechanism provided at each station for releasably clamping an upper die against the lower die; and a drive mechanism for moving the die carriage sequentially to the first and second stations.

Abstract: A household hand-device for use as a meat-presser is described in which the container member of the device forms the base of a cylindrical body which slidingly receives therein a handle member that is also cylindrical in shape and that cooperates with a return spring. By this mechanism, a plunger-type presser may be operated to deplace it within a chamber in the container. A removable bottom of the container consists of a cup-shaped member, which can be fitted over the external wall of said container to cause the cup member to get firmly engaged with a central body through a number of bayonet joints.

Abstract: A press is disclosed for use in compressing refractory material in the manufacture of bricks and the like, the press including means for supporting a mold box in the press in such a manner that the mold box is easily and quickly removed from a supporting mold table, and wherein the hydraulic clamping apparatus of the press can also be used to provide the motive force for separating the mold box from the supporting mold table.

Abstract: A removable insert for a mold for impressing indicia on each molded product formed in the mold. The insert includes a plug body, a bore through the plug body, and a plug situated in the bore and having a mold engaging surface for impressing an article formed in the mold. The plug is rotatable and include an indicator which may be directed toward a series of indicia spaced about the periphery of the bore.

Abstract: In presses such as hydraulic presses used for forming tiles or bricks from ceramic or other materials, a mold box is mounted in alignment with the upper and lower dies. To hold the mold box without keying it to the mold case, a wedging assembly comprises an outer wedge releasably fixed to a wall of the opening and having a vertically angled surface facing inwardly. Next to it is an inner wedge having a vertically angled surface which is brought into contact with the angled surface of the outer wedge. Adjustable securing means such as vertical bolts pass through a vertical passageway in the inner wedge and are screwed into an aligned, threaded passageway in the outer wedge for moving the inner wedge vertically until its translation laterally secures the key-less mold box fast by friction alone against downward thrusts of the upper die.

Abstract: A unitary punch and die assembly for tooling a powder material compacting apparatus, or press, the assembly comprising a die plate mounted in the press table, which removably holds a die bushing clamped in position by a retainer collet provided with a peripheral thread and an internal thread. The retainer collet has an internal shoulder engaging a shoulder at the base of the die bushing, and a clamping ring threads on the internal thread of the collet for holding the die bushing in position within the collet. The peripheral thread of the collet engages the corresponding internal thread of a die spacer on which the die plate is mounted. By means of the retainer collet and the clamping ring, the die bushing surface may be adjusted flush with the surface of the die plate, without requiring grinding or lapping of the die bushing after assembly of the die bushing in the die plate.

Abstract: A mold assembly is provided for making a thermoplastic container having a bottom, side and unitary closure or top wall means with a parting line along a plane of symmetry in the bottom and sidewall means but with the parting line offset on the top wall means to define a generally flat, pierceable membrane on a major portion of the exterior surface of the top wall means. The mold assembly molds and seals the container from a tube of thermoplastic material, which assembly includes mold parts having lower sections adapted to open and close relative to a center parting plane to shape the bottom and sidewall means of the container and having a pair of upper sections adapted to shape the unitary closure. One of the upper sections has a removable protuberance for forming a major portion of the container top closure surface with the mold parting line thereon offset relative to the center parting plane of the mold assembly.

Abstract: The invention provides an apparatus for forming moulded articles such as removable insoles for shoes. A blank is placed between a rigid plate corresponding to the peripheral base contour of the finished article on one side thereof and a mould bed corresponding to the shape of the article on the other side thereof. Peripheral areas of the blank are exposed by the plate and a flexible diaphragm is applied over the plate under pressure or with the aid of a vacuum after heating the blank to the softening point, to define said peripheral base contour, and to conform the other side and the exposed areas of the blank to the shape of the mould bed. In the case of shoe insoles, a range of sizes can be made with the same mould bed, using only different sizes of plate.

Abstract: A discrete thermoplastic composition is formed into a shaped article in a rapid stamping process. The composition is placed on and preheated with a rigid metal plate which has been preshaped to fit the contour of one of the dies of the stamping press. The heated composition and metal plate are then transferred to the stamping press where the composition is stamped and cooled into a three-dimensional shaped object. The surface of the metal plate contacting the composition has a special finish so that desired surface effects can be produced on the stamped article.

Abstract: Three-dimensional work pieces, such as instrument panels or dashboards, are made of initially flat stock or of synthetic material such as a two-component foamable material. The tools of the present apparatus include upper and lower holding tools which are preferably simultaneously shaping tools, and cutting or trimming tools. The upper tools and the cutting or trimming tools may have a common support which is preferably exchangeably secured in a main frame. The shaping tools are moved into a first cooperating position relative to each other, whereby the work piece is formed into the desired shape. The shaping tools may then be locked in the shaping position or they may be moved into a second cooperating position to be rigidly locked in the second position. A tool support such as a table carried by a scissors lift frame is used for moving the shaping tools into the desired positions. The cutting or trimming is then performed by applying pressure to the respective tools.

Abstract: A mold comprises a base, a split die and a plunger. The base has longitudinal shoulders with resilient elements, and sloping surfaces which form an upwardly flaring nest adapted to accommodate a vertically movable die. The side walls of the die have their sloping surfaces in contact with the sloping surfaces of the longitudinal shoulders and, together with the die end walls, are placed around the die bottom. Provided between the base and the die are means for lifting the latter and means for supporting the die bottom in the raised position after the die has been lowered. Such die construction makes it possible to reduce the time required for its assembly and disassembly, as well as for detaching the finished abrasive segment from the die walls.

Abstract: Method and apparatus for forming and laying paving blocks in which interchangeable grids are provided of dissimilar configuration comprising a plurality of mould cavities each enclosing one or more fixed centers of the modules of the pattern, whatever is in the conformation of the said grids. The modular and transformable ramming assembly comprises a plurality of fixed securing points distributed to correspond to the fixed centers of the modules of the mould pattern and intended for the removable fitting of ramming plates of forms and dimensions analogous with those of the underlying cavities of the selected grid. The changing of forms and/or dimensions of the moulded paving stones or slabs is effected by replacing one grid by another differently conformed grid and by fixing new removable ramming plates corresponding to the forms and/or dimensions of the cavities of the new grid, by means of the said fixing points.

Abstract: A press is provided of the type used in compressing refractory material at high pressures in the manufacture of bricks and the like. The press includes a bed, columns supported by the bed, and a mold table slidably supported on the columns, the mold table including a central aperture housing a removable mold. The press further includes at least one plunger extending upwardly into the mold cavity of the mold. The press also includes a pallet for supporting the plunger, the pallet being releasably attached by alignment pins to the press bed and being supported for slidable movement on the upper surface of the press bed by a plurality of inflatable air bags located between the upper surface of the press bed and the pallet, the air bags each including at least one aperture in the bottom wall of the air bag. Air can be forced into the air bags to cause inflation of the air bags and can escape through the aperture in the bottom wall to form a fluid cushion between the pallet and the upper surface of the press bed.

Abstract: The disclosed invention consists of a composite mold for consolidating and conforming particulate solids into a compressed, shape-retaining mass. The mold comprises a matched pair of generally half sections, or assemblies thereof, provided with obliquely directed aligning keys whereby one half-section of the mold can recede from adjoining contact with the other in a generally oblique direction to extend the die cavity in two dimensions and thereby freely release the molded product intact, and then return to its initial position adjoining its counterpart half section for the next molding cycle. The mold construction of this invention is of particular utility in the molding of particulate inorganic magnetizable materials in the manufacture of permanent magnets of precise dimensions.

Abstract: An absolute-coded angular position indicator coupled to the shiftable one of two mold-clamping plates, produces a position signal indicating the position of the shiftable plate. This signal is applied to one input of a subtractor, whose output signal is displayed on a numerical display. The subtracting input of the subtractor receives a corrective signal from a manually set decades switch arrangement. When no mold is present between the clamping plates and the latter are pressed into direct contact with each other, the displayed numerical value is zero. When a mold is clamped between the plates, an non-zero value is displayed, and the set-up technician sets the decades switch arrangement to the displayed value. As a result the displayed value goes to zero. The output signal of the subtractor is furnished to control elements which must control machine operations in dependence upon the height of the particular mold being employed.

Abstract: An apparatus for molding shaped bodies from foamable plastics such as foamable polyurethane resin material comprises a two-piece mold 20, 21 fastened to two clamping plates 17, 18 of a mold holder 11, all of which can revolve around parallel axes 34, 35, 36. The upper plate 18 can move toward the fixed lower plate 17 and back again. The plates are locked and urged together during the molding process by pairs of hydraulic cylinders 28, 29 and 30, 31 mounted on opposite sides of the mold halves 20, 21.

Abstract: A coin operated vending machine for automatically making and dispensing snow cones in accordance with a method of sequentially activating a cup delivery mechanism, depositing flaked ice from a self-contained ice making machine into the cup through an ice retainer collar, activating an ice capping device, depositing a selected flavoring syrup onto the capped ice, and dispensing the finished snow cone and readying the machine to repeat the sequence upon deposition of another coin.

Abstract: An injection mold has a pair of die plates upon which two mold parts are mounted and are mutually guided for relative movement. One of the mold parts comprises a pair of die jaws which are separable transversely to the direction of relative movement of the two mold parts with the jaws being guided on the respective die plate by guide assemblies disposed externally of the mold. Each guide assembly comprises a guide bar forming a groove in which a ridge of the jaws is slidable and which is affixed to a retaining bar so that the two parts abut one another in the plane of the junction of the mold part with its die plate. The retaining bar is fastened to the die plate and surfaces of the bars can be machined to compensate for wear.

Abstract: A brick press is disclosed having a turntable carrying a plurality of molds angularly spaced from each other and having equipment associated therewith establishing a plurality of series of operating stations, each series including at least a precompression station, a compression station and an ejection station. The molds carried by the turntable are provided with replaceable liners. A material handling and feed system is also disclosed, providing for preparation of particulate or granular materials to be charged into the molds.

Abstract: Friction elements, composed of fillers including at least five percent by weight of asbestos, bonded by a thermosetting resin, are first produced as pre-forms of final density by merely stamping the dry mixture in a die cavity. The problem of delamination is overcome by making provision for passages in one of the mold cavity members, said passages leading from the mold cavity to the ambient atmosphere. Sustained operation at high speed is made possible by screening the ends of the passages which open into the die cavity. The stamped article is removed from the die cavity and subjected to a time-temperature curing cycle to cure or thermally harden the bonding resin.

Abstract: A clamp for holding together the portions of a mold used in molding solid objects from a reacting liquid such as polyurethane has a C-shaped frame which is pivotally mounted on a pedestal to swing through an arc. The C-shaped frame of the clamp consists of an integral structure having an upper jaw connected by a column to a lower jaw. The frame supports a bed, crown and platen. The bed and crown are each a plate-like member that is mounted to pivot relative to one of the jaws. The platen is mounted preferably on the bed or lower one of such members. The mold portions are mounted on the crown and platen with the parts being arranged to move so that the mold portion engage and disengage. The invention also includes a method of molding wherein the mold portions are engaged and disengaged by a process that involves pivoting at least one and preferably both of the portions relative to the C-shaped frame.

Abstract: A die segment for a briquetting roll in which the roll is a steel body which is provided with a peripheral groove having a radially outwardly facing bottom wall which is made up of planar chordal segments and having side walls at the side edges of the bottom wall with one side wall inclined inwardly in the outward direction and being in the form of an annular segment of a cone concentric with the axis of the roll and the other side wall substantially radial. The die segments are bodies of hard wear resistant material mounted in the groove, one on each chordal section of the bottom wall of the groove and each has one side inclined to fit the inclined wall of the groove with the other side spaced from and diverging from the radial side wall in the outward direction. Wedge bars between the radial side wall of the groove and the opposed sides of the die segments are utilized for clamping the segments in place in the roll.

Abstract: A mould for use in a confectionery moulding plant and consisting of a thin flexible sheet of plastics material which is vacuum or pressure formed with at least one moulding cavity extending downwardly from it and has at its sides downwardly extending flanges whereby it may be detachably secured to a supporting carrier frame.

Abstract: A briquetting press roll is disclosed which includes a plurality of removable mold segments and means for attaching the mold segments to a cylindrical central core. The mold segments have, on their side walls, connecting means for engaging annular retaining rings. The annular retaining rings span the interface of the mold segments and the central core. The annular retaining rings engage the mold segments and the central core thereby affixing the mold segments to the central core.

Abstract: A mold base employs tungsten carbide mold cavities. These hard, brittle cavities are supported by softer, more resilient and more malleable metal support elements. Cams and sliding surfaces are above the parting line and the base is opened from below the parting line.

Abstract: A clamp for holding together the portions of a mold used in molding solid objects from a reacting liquid such as polyurethane has a C-shaped frame which is pivotally mounted on a pedestal to swing through an arc. The C-shaped frame of the clamp consists of an integral structure having an upper jaw connected by a column to a lower jaw. The frame supports a bed, crown and platen. The bed and crown are each a plate-like member that is mounted to pivot relative to one of the jaws. The platen is mounted preferably on the bed or lower one of such members. The mold portions are mounted on the crown and platen with the parts being arranged to move so that the mold portion engage and disengage. The invention also includes a method of molding wherein the mold portions are engaged and disengaged by a process that involves pivoting at least one and preferably both of the portions relative to the C-shaped frame.