Abstract: A hand operated injection molding machine apparatus constructed from prefabricated sub-assemblies and a desired mold clamping means attached to a main support structure, and then electrically integrated with each other.

Abstract: A mold assembly includes a mold moving half, at least one heat sink positioned on the mold moving half, and a plurality of heat pipes positioned on the mold fixed half and on the at least one heat sink. The at least one heat sink includes a plurality of parallel fins. The plurality of parallel fins is secured to the heat pipes with the heat pipes passing therethrough. The heat pipes are capable of moving together with the mold moving half.

Abstract: The present invention relates to a mould, in which a completely closed cavity can be formed in one operating state, comprising an injector (10) which is at least partially accommodated in the mould (14) and the discharge opening of which opens into the closed cavity. According to the invention, the injector is designed with a material feed duct (30) and a material return duct (34), wherein the two ducts (30, 34) open into a connecting chamber (32) in the region of the tip of the injector (10) and are flow-connected to one another via said connecting chamber (32). In this case, an injector needle (36) can be switched into at least two operating positions, wherein, in one moved-forward operating position, the discharge opening is closed by means of the tip (38) of the injector needle (36) and, in the other, pulled-back operating position, the discharge opening is flow-connected to the connecting chamber, and the injector (10) is therefore open.

Abstract: An exemplary molding material feeding barrel includes a main body, a blocking member, and an electrically conductive member. The main body has a chamber defined therein. The main body has a first inner surface in the chamber. The blocking member protrudes inward from the first inner surface of the main body. The electrically conductive member has a first end exposed at an inside of the main body, and a second end grounded.

Abstract: An injection molding nozzle comprises a material feed pipe subtending a flow duct communicating flow-wise with at least one nozzle tip. Each tip points transversely to axial direction A of the nozzle and is held by a manifold. The manifold is pluggable/insertable into the material feed pipe and includes a neck and a base. A manifold duct system is subtended in the manifold. A main duct extending the flow duct is in the neck and the base comprises a deflection site and at least one manifold duct. The manifold duct runs radially to axial direction A. The nozzle tip is affixed in a seating unit fitted with a central recess. Radial boreholes running transversely to axial direction A fit into the seating unit and receive plugged-in nozzle tips. The central recess receives the base, the nozzle tip being secured by the base to and in the seating unit.

Abstract: A plastic injection mold for molding a plastic article includes an upper insert and a lower insert. The upper insert and the lower insert match with each other to define an annular mold cavity in between. An annular gate communicates with the mold cavity to allow molten plastic material to flow into the mold cavity to mold the article. An annular runner is connected with the annular gate for injecting molten plastic material to the annular gate. Molten plastic material will evenly flow into the mold cavity of the plastic injection mold through the annular gate to mold the plastic article, which prevents the plastic article from being disfigured, decreasing the number of defective products and improving the product quality.

Abstract: The present invention relates to a coaxial cooling/heating coil structure and a mold configured with the same, in which the coaxial cooling/heating coil is comprised of: a frame, configured with a cooling channel having an inlet, provided for a cooling water to flow therein, and an outlet, provided for discharging the cooling water therefrom; and a heat-conducting coil, disposed inside the cooling channel. The coaxial cooling/heating structure is fitted to a mold to be used for enhancing the preheating efficiency of the mold while improving the time required for cooling the mold.

Abstract: Provided is an injection nozzle and a molding apparatus which ensure injection pressure by suppressing resin leakage even when a resin material having a low viscosity is used. In injection molding, it is especially important that the injection nozzle and a fixed die are excellently kept in contact with each other and that the resin is not leaked. Resin leakage from between the injection nozzle and the fixed die lowers molding pressure, increases molding shrinkage of the resin, and directly affects the qualities of a molded product resulting in generation of a sink, transfer failure and the like. Since an O-ring in a circumferential groove of the nozzle closely comes in contact with a concave spherical surface while elastically transforming on the entire circumference, leakage is effectively suppressed even the resin is a heat-curable resin having a low viscosity.

Abstract: A nozzle valve gate for injecting hot plastics into an injection mold includes a body having a passage for flow of the plastics to an outlet and forming an actuator chamber. A nozzle part is connected to the body and extends longitudinally to a nozzle tip having an injection aperture. The nozzle part has a flow passageway connected to the plastics outlet for conducting the plastics melt to the injection aperture and a machined bore forming a guide passageway. A valve pin is movable in the guide passageway between open and closed positions. A piston is connected to the pin and is slidable in the actuator chamber. An elastomeric wiper seal extends around the valve pin adjacent the machined bore, is wear resistant, and can withstand high temperatures of at least 200° C. A micro gap is formed between the pin and the machined bore.

Abstract: An injection mold for molding a lens barrel is disclosed. The injection mold includes a female die, a male die and a screw die. The female die and the male die are correspondingly connected to two ends of the screw die. The female die, the male die and the screw die cooperatively define a mold cavity. The female die includes a female die plate and a female die core protruding from the female die plate. The male die includes a male die plate and a male die core protruding from the male die plate. The male die defines a through hole passing through the male die plate and the male die core. An air gap is formed between the distal ends of female die core and the male die core, the air gap is communicated with the mold cavity and the through hole.

Abstract: A venting device for venting a cavity of an injection mold via a venting opening of the injection mold which cavity can be filled with an injection molding material is provided. The venting device comprising a housing which has a through-opening and is designed and intended for an arrangement on an injection mold in such a way that air which is present in the cavity and which escapes from a venting opening of the injection mold when injection molding material is introduced into the cavity can exhaust through the through-opening of the housing into an exterior space surrounding the injection mold. A valve pin extending longitudinally along a direction of extent and being mounted in the housing movably along its direction of extent. The valve pin is designed for being moved from a venting position, in the direction of the cavity into a first cleaning position.

Abstract: An injection mold for insert molding includes a stationary plate, a first core and a second core. The stationary plate defines an upper surface and a side surface perpendicular to the upper surface. The upper surface has a slot at a middle portion thereof. The slot extends perpendicular to the side surface and reaches the side surface. The first core is received in the slot of the stationary plate and defines a holding element on a top surface thereof for securing an insert. The second core is closed with the first core to form a mold cavity, with the insert extending into the mold cavity. The first core is capable of being taken off from the slot of the stationary plate when the first core and the second core are detached from each other.

Abstract: An injection molding machine includes supporting plates, molds coupled to the supporting plates, and a coupling guide device to guide the coupling of the molds and the supporting plates. The coupling guide device includes a first coupling guide recess and a first coupling guide protrusion provided at center portions of the molds and the supporting plates so as to be coupled to each other, and a second coupling guide recess and a second coupling guide protrusion provided at the molds and the supporting plates, spaced apart from the first coupling guide recess and the first coupling guide protrusion, so as to be coupled to each other. The second coupling guide recess is formed lengthwise in a direction toward a periphery from the center portions of the molds and the supporting plates.

Abstract: The present invention concerns a transfer element (1, 9) for an injection molding system comprising a flow lumen for a plasticised plastic material. To provide a transfer element for an injection molding system, which makes it possible to further increase the material throughput of the injection molding system without having to tolerate increased wear of seals and other system components, it is proposed in accordance with the invention that it has a device for degassing of the flow lumen.

Abstract: A hot runner system including a shoot pot system for transferring melt from a single shooting pot to multiple nozzles. Melt is fed from a source of melt into the cavity through the multiple nozzles, and a valve isolates melt in the cavity from melt in the source. A plunger within the cavity is driven forward to inject melt in the cavity into a mold cavity at high pressure without significantly increasing the pressure of melt in the source. The plunger optionally functions as both the plunger and the valve by opening and closing communication between the cavity and the manifold as it is rotated.

Abstract: An injection apparatus for injecting hot plastics material into an injection mold has an actuator section forming an actuator chamber and a nozzle member connected to the actuator section and extending to a nozzle tip having an injection aperture. The nozzle member includes an injection passage system for conducting the hot plastics material to the injection aperture. An elongate valve pin extends through a guide passage in the nozzle member and is movable between open and closed positions. A piston is connected to this pin, is slidably mounted in the actuator chamber and moves the valve pin between the open and closed positions. The piston and actuator section are machined to close tolerances so as to form a micro-gap between the wall of the piston and the wall of the chamber thereby avoiding fluid seals. The actuator is able to operate at temperatures ranging between 200 and 400° C.

Abstract: An injection molding apparatus includes a screw housed in a heating cylinder, a rotator for rotating the screw, a linear mover for moving the screw linearly, a motor for driving the rotator, a driver for driving the linear mover, and a base member for supporting the screw, the rotator, the linear mover, the motor and the driver. The screw, the linear mover and the rotator are supported by the base member along a vertical line against the ground. In the injection molding apparatus is a nozzle touch mechanism which includes a support member mounted on the base member, and a member for mounting a die member mounted on the support member to support the die member. The die member is mounted by the member for mounting the die member so that a molding material entrance port of the die member engages an injection port of the heating cylinder.

Abstract: An injection blow molding machine construction utilizes pairs of C-shaped cut plate members to support clamps for the injection mold and for the blow mold, respectively. The injection molding frame members are angularly disposed at 60 degrees with respect to the blow molding frame members. The frame members are co-mounted at the ends of the C-shaped members to a pre-stressed central vertically disposed column or post. The respective injection mold and blow mold clamp forces are transmitted to the respective frame members and in turn to the column in a balanced manner to avoid flexure of the plate members. The present construction reduces the bulk of conventional injection blow molding machines, eliminates weldments and provides for ready assembly of the machine and ready access to the molds so as to reduce downtime.

Abstract: Injection molding apparatus with integral heating and cooling in the forward portion of a nozzle adjacent the gate. Cooling fluid tubes extend to the forward portion of the nozzle through a surrounding insulative air space which reduces problems of thermal expansion and contraction. A split seating ring is seated in the cavity plate and extends across the insulative air space to receive the nozzle. The seating ring has an outer opening for the cooling fluid tubes to pass therethrough.

Abstract: A device for precisely aligning, mating and clamping two injection mold plates, in which device, a first mold plate is rigidly attached to a support table and a second mold plate is slidably guided on parallel guide bars into contact with the first mold plate by at least two symmetrically placed, parallel ball spindles which are driven synchronously by a hydraulic motor.