Abstract: Apparatus for producing high modulus products. A polymer morphology or powdered metal is solid-state deformed under pressure through the rollers of an extrusion rolling die, at a temperature near but below its crystalline melting point, while controlling the extrusion rate and the rate of rotation of the rollers so that the rate of extrusion of the polymer or metal is substantially the same as the rate of rotation of the rolling die surface.

Abstract: Chocolate mold filling apparatus having chocolate molds having different number of cavity, cavity volume, cavity fill opening height, and cavity fill opening spacing characteristics. Each mold further has a base flange which incorporates a process code keyed to the mold different characteristics. A sensor detects the base flange process codes and controls a connected conveyor, chocolate metering pump, and chocolate mold fill tube.

Abstract: A die clamping apparatus includes a fixed die plate for holding a fixed die, a movable die plate for holding a movable die, and structure for actuating the movable die plate to advance or retreat with respect to the fixed die plate. Tie bars for performing a die clamping operation can be fixedly coupled to the fixed die plate after the movable die plate has approached to the fixed die plate and the fixed die and the movable die have closed form a mold. A movable die plate main body and guides for guiding advance/retreat movements and on which the movable die plate is mounted are separately formed and are pin-coupled so as to be mutually rotatable.

Abstract: A mold mounting apparatus having a mold holding apparatus provided on one side at the end of rails, for positioning and holding a mold; a second mold holding apparatus provided on the opposite side of clamping machines of an injection molding machine and the rails, for preheating, positioning and holding the mold in place; a mold delivery apparatus for delivering the mold to two clamping machines; and a mold carrying apparatus for receiving and delivering the mold among the mold holding apparatus, the second mold holding apparatus, and the mold delivery apparatus, and for conveying the mold along the rails. According to this mold mounting apparatus, the mold can be automatically carried into, and out of, all of the clamping machines after the mold has been brought into the mold holding apparatus, thereby improving mold changing operation efficiency and saving a space for the molding process.

Abstract: A device for gripping and pulling a length of thermoplastic sheet softened to be moldingly formed at the front and rear edges, which are otherwise inevitably made to be concave, so as to hold edges substantially straight. The device uses at least two pairs of lower and upper gripping members arranged to be vertically movable so as to grip the above front and rear edges. Two pairs of pull levers each cooperating with one of the pair of lower and upper gripping members operate so as to grip the front and rear edges in advance of the gripping by the gripping members and pull to straighten the concaved edges which are then gripped by the gripping members.

Abstract: An injector head for producing tread strips, and including a thickness-adjusting slide and two side plates for forming an essentially trapezoidal tread strip profile. The side plates are mounted so as to be adjustable in a lateral direction, and are supported against the thickness-adjusting slide in a direction parallel to the direction of extrusion. The thickness-adjusting slide extends on the shorter side of the trapezoid over the entire width of the tread strip. Either the thickness-adjusting slide or the side plates are mounted on an injector head end member that can swivel away.

Abstract: A device with contratrotating knives for severing filter cigarette uniting bands from webs for filter cigarette assemblies in automatic filter tipping mahines, in which the knives are carried by drums in arrays with their cutting edges meeting with tangential contact at successive points. The cutting edges of one series of knives are carried at a higher peripheral speed than that of the other series by a support drum. The path of the cutting edges with a higher peripheral speed develops in a plane of the tangential point between the knives of both series such that their lowermost and uppermost sections respectively, are distant from the axis of rotation by equal radii, but greater than that of at least one of their intermediate points coincident with the tangential point.

Abstract: Vacuum forming apparatus in which a thermoplastic sheet material is pushed, by at least one plug, into a recess formed in a female mold, and evacuation is applied to the recess to bring the sheet material into intimate contact with a wall surface of the recess. At least one of the female mold and the plug is moved in a first direction in which the plug and a bottom of the recess relatively move toward each other. At least one of the female mold and the plug is moved in a second direction substantially perpendicular to the first direction, in which second direction the plug and a peripheral edge of the recess relatively move toward each other.

Abstract: A center entry valve gated injection molding system having a heated nozzle secured in front of a heated manifold with at least a pair of valve member biasing mechanisms extending radially outward from a reciprocating elongated valve member. The melt passage splits into two branches which extend through a manifold outwardly around a rear portion of the valve member. The two branches of the melt passage and the two biasing mechanisms are alternatively evenly angularly spaced around the valve member which considerably reduces the space required. The valve member has an enlarged forward end which opens forwardly into the cavity and is closed in a retracted position in which it seats in the matching mouth of a gate in a nose portion of the nozzle. Each biasing mechanism includes a compression spring which engages a lever member to continuously urge the valve member rearwardly. When injection pressure is applied it overcome the force of the springs and moves the valve member forwardly to the open position.

Abstract: A mold clamping apparatus of an injection molding machine is provided, which is capable of uniformly applying a pressing force to a movable platen. A pair of annular wedge type connection members (21, 22) are disposed within annular hollow portions (16a) of driving pulleys (16), which are respectively fitted on ball screws (14, 15) threadedly engaged with heads of upper and lower toggle sections disposed symmetrically with respect to an axis of the mold clamping apparatus. To make an adjustment for eliminating mismatch between operational phases of the toggle sections of the toggle mechanism due to flexure of the same mechanism, an urged contact state of the connection member is released by loosening bolts (23), and the ball screws, rendered to be rotatable relative to the driving pulleys, are manually rotated so that the heads are aligned with each other. After completion of the adjustment, the driving pulleys are again rendered rotatable in unison with the ball screws.

Abstract: A control apparatus for an injection molding machine injects a melted resin within a housing into a cavity of a mold through a nozzle section of a nozzle at a housing and by movement of a screw. A nozzle opening changing mechanism variably changes a throttled path area of the nozzle while a mold temperature sensing mechanism sensing the temperature of the mold. A control mechanism controls the nozzle opening changing mechanism in accordance with the sensed temperature of the mold temperature sensing mechanism.

Abstract: A multi-cavity valve gated injection molding system having an elongated manifold through which a melt passage to a number of heated nozzles. A separate valve member bushing is seated in an opening through the manifold in alignment with each nozzle. The bushing is in bearing contact between the back plate and the rear face of each nozzle. The bushing has a melt duct with two smoothly curved arms which connect between the melt passage in the manifold and the melt passage around the valve member. The bushing provides a seal around the reciprocating valve member and has an outer flange which forms a combination insulative air space and containment chamber for melt which does escape.

Abstract: A valve gated injection molding system having a heated nozzle which is secured to a heated manifold received in a well in a cooled cavity plate. An insulative air space extends around between the heated nozzle and the cooled cavity plate. An locating flange extends outwardly across the insulative air space from either the nozzle or the manifold into contact with the surrounding cavity plate. The locating flange has number of holes extending transversely therethrough according to a predetermined configuration to reduce heat loss from the heated nozzle and manifold to the surrounding cooled cavity plate.

Abstract: An ejector blade for ejecting parts from injection molds. The ejector blade has an elongate shank portion with a slotted end therein, a flat blade portion having an end shaped to be engaged within the slot, and apertures through the engaged ends in registration with one another with a pin engaged in the apertures to join the shank and blade portions releasably so that different blade portions can be mounted on the shank portion. The pin is a slotted roll pin and the aperture in the shank portion is larger in diameter than the aperture in the blade portion in order to permit some movement between the blade and shank portions to accommodate variations in a mold in which the ejector blade is used.

Abstract: A valve which serves to admit hardenable metallic, plastic or other material into the die of a molding machine has a housing with a centrally located passage for a reciprocable needle-like valving element, an inlet for hardenable material at one side and adjacent one end of the passage, an outlet which is coaxial with the other end of the passage, an eccentric chamber disposed at the one side of the passage and communicating with the inlet, and an elongated gap which establishes communication between the chamber and the passage. The valving element is movable between an extended position in which it seals the gap from the outlet and a retracted position in which the gap admits hardenable material into the passage so that the admitted material can flow toward and through the outlet. The housing surrounds the valving element in the region of the gap along an arc of more than 180.degree..

Abstract: A valve gated injection molding system having a novel valve member for large volume applications. The elongated valve member has a ribbed insulative portion between the main steel portion and a conductive portion adajcent the tip end. The conductive portion provides more rapid cooling when the tip end is seated in the gate in the closed position. The adjacent insulative portion provides a thermal barrier to reduce heat flow along the valve member to the conductive portion. This combination avoids sticking of the tip end when the mold opens and thus allows cycle time to be reduced. The conductive portion has an integral beryllium copper plug which is supported by radially extending ribs of the insulative portion to withstand continual repeated impact loading every time the gate is closed.

Abstract: A injection metal mold wherein a metal mold body having an article forming section therein and a metal mold fixing frame separately formed from the metal mold body, and on which the metal mold body is fixedly mounted and which is to be mounted on a molding machine body is constituted such that a slide mechanism section for a slide core which is moved into or out of the article forming section of the metal mold body in response to opening or closing movement of the metal mold body is provided on the side of the metal mold fixing frame. Further, a forming section of the slide core is formed as a separate member from the slide mechanism section and is removably mounted on the slide mechanism section.

Abstract: An injection molding machine having a system for detecting nozzle leaks including a thermocouple positioned in the tunnel opening of a stationary platen of the machine at a predetermined location relative to the nozzle to sense instantaneous temperature at the location. A controller coupled to the thermocouple receives signals from the thermocouple and activates an alarm when the temperature in the tunnel opening falls outside of a predetermined normal operating temperature range.

Abstract: An injection molding multi-gate nozzle with a central portion having a central melt bore and a spiral electrical heating element integrally brazed in a channel in its outer surface. The nozzle has a number of elongated conductive probes spaced in a sleeve portion which extends around the central portion adjacent its forward end. Each probe extends in the sleeve portion a predetermined distance rearwardly along the central portion and projects from the sleeve portion a predetermined distance forwardly of the forward end of the central portion. Each conductive probe has a copper inner portion which picks up heat from the adjacent coils of the heating element and carries it forwardly to the projecting forward portion adjacent one of the gates. In addition to providing additional heat, this configuration with the forwardly projecting probes provides the mold with more structural strength and improved cooling.

Abstract: A molding apparatus for molding a clay pigeon includes a bypass tube having a tip disposed in a blow orifice communicating with a cavity of a metal mold in the form of the clay pigeon. The bypass tube has a diameter smaller than that of the blow orifice and compressed air, which leads molding material in the blow orifice, passes therethrough in order to supply the molding material mixture of at least sand and hardening agent to the cavity, whereby corners and details of the cavity are satisfactorily filled with the molding material supplied to the cavity.