Patent application number | Description | Published |
20080241299 | Electronic Device for Controlling Plastics Injection Molds - An electronic device for controlling plastics injection molds; the electronic device being completely separate and independent of the central temperature regulating control unit of the mold, and having a number of electronically controlled electric switching assemblies, each of which is interposable between one electric power module of the central temperature regulating control unit of the mold and the two independent resistors and two independent temperature sensors which together form each heating unit of the injection device of the mold; each electric switching assembly selectively and alternatively connecting one of the two resistors and one of the two temperature sensors of a corresponding heating unit to a respective electric power module of the central temperature regulating control unit of the mold; and the electronic device also having an electronic central control unit which controls the various electric switching assemblies as a function of the state of the resistors and temperature sensors of the various heating units. | 10-02-2008 |
20080299248 | Plastics injection molding machine - A plastics injection molding machine having a mold comprising at least two metal shells which are brought into contact with each other and are designed to form a closed cavity negatively reproducing the shape of the plastic part for molding, and a plastic material feed line which is supplied with and liquefies a stream of granular plastic material, and which feeds the liquid plastic material in controlled manner to the cavity formed when the two metal shells are mated; the machine also having a detergent mixture feed circuit which, on command, feeds a given quantity of a detergent mixture into the plastic material feed line, and an electronic central control unit for controlling the detergent mixture feed circuit. | 12-04-2008 |
20090117220 | Auxiliary supporting structure for presses, and plastics molding press equipped with such a structure - An auxiliary supporting structure for presses, having an auxiliary mold platen having a front surface designed to firmly, but removably, support a half-mold; a number of hydraulic supporting cylinders, which project from the rear of the auxiliary mold platen, in a direction parallel to a reference axis perpendicular to the plane of the auxiliary mold platen; mounting means for firmly, but removably, fixing the hydraulic cylinders to the front surface of a movable mold platen of the press; a hydraulic distributor for regulating pressurized-oil flow to and from each hydraulic cylinder independently of the others; and an electronic central control unit for controlling the hydraulic distributor as a function of signals from a number of external sensors, to enable the hydraulic cylinders to instantaneously compensate any asymmetric distribution of the mechanical forces exerted on the half-mold as the plastic material is injected. | 05-07-2009 |
Patent application number | Description | Published |
20140037781 | APPARATUS FOR INJECTION-MOULDING OF PLASTIC MATERIALS - Apparatus for injection-moulding of plastic materials comprising a hot runner ( | 02-06-2014 |
20150251346 | FIXING PLATE OF THE MOLD OF AN INJECTION MOLDING APPARATUS OF PLASTIC MATERIAL - An injection molding apparatus of plastic material including a mold, a fixing plate of the mold, a distributor of the plastic material to be injected and a plurality of injectors connected to the distributor and each including a valve pin controlled by a respective rotary electric motor and a transmission. The fixing plate has a cavity facing the mold on a first face, within which the distributor is contained, and each electric motor with the relative transmission is housed, in a quickly insertable and removable manner, within a respective seat arranged on a second face of the fixing plate opposite to the first face, laterally with respect to the corresponding injector. | 09-10-2015 |
20150266216 | METHOD OF INJECTION MOLDING OF PLASTIC MATERIALS - A method of injection molding of plastic materials into a cavity of a mold with a molding apparatus including a distributor of the pressurized fluid plastic material connected to at least one injector having a pin valve displaceable between a fully closed position and an open position. The method includes a filling step following displacement of the pin valve from the fully closed position to the open position, a packing step of the pressurized plastic material keeping the pin valve in the open position, and a step of displacement and maintenance of the pin valve in at least one partially closed intermediate position prior to its complete closure. | 09-24-2015 |
20160067901 | METHOD AND APPARATUS FOR INJECTION MOLDING OF PLASTIC MATERIALS - Injection molding of plastic materials by an apparatus comprising at least one injector including a valve pin displaceable in a controlled manner between a closed position and an open position by an electric rotary actuator. At least one step is provided of detecting the value of the torque developed by the electric rotary actuator when the valve pin is in the path from the closed position to the open position, and the torque value detected is used to pilot the molding process. | 03-10-2016 |