Performance of an injection molding machine is improved. The injection molding machine includes: a central controller centrally controlling an injection molding operation; a first injection apparatus performing an injecting operation of material, based on a first injection start signal output from the central controller; a second injection apparatus performing an injecting operation of material, based on a second injection start signal output from the central controller; and a mold clamping apparatus performing a mold clamping apparatus. The injection molding machine is configured to adjust a time difference between a first injection start timing of the material injected from the first injection apparatus and a second injection start timing of the material injected from the second injection apparatus.

Disclosed is a method of refilling a shooting pot cavity in a molding system, the method comprising: determining that a trigger event has occurred in the molding system; and coordinating a refill of the shooting pot cavity with the occurrence of the trigger event.

A work holding mechanism includes a body part having a three-dimensional shape including at least a recess or a protrusion, and an adsorption part for holding a work by adsorbing the work onto the body part in conformity to the three-dimensional shape of the recess or the protrusion provided in the body part. The work is held by being adsorbed in conformity to the three-dimensional shape of the body part, and, therefore, the amount of usage of the work in a work molding system can be reduced as compared with when the work is held so as to have a flat shape.

An injection molding apparatus including a mold, an injection device and a specific volume sensing module is provided. The injection device is adapted to inject a material into the mold. At least parts of the specific volume sensing module are disposed at the mold, wherein the specific volume sensing module is adapted to sense an actual specific volume of the material in the mold. In addition, an injection molding method is also provided.

A method for metal powder injection molding includes injecting a first metal powder of a TiAl-based intermetallic compound into a mold, and molding the first metal powder through use of an injection molding machine; injecting a second metal powder of a TiAl-based intermetallic compound having a same constituent as the first metal powder and having a different average particle diameter from the first metal powder into a mold, and molding the second metal powder through use of the injection molding machine; and sintering molded articles obtained by molding the first metal powder and the second metal powder, and producing a mixed sintered compact in which a first sintered compact of the molded article obtained by molding the first metal powder and a second sintered compact of the molded article obtained by molding the second metal powder are integrated.

A control device for an injection molding machine has a first operation condition setup unit for setting an operation condition for a setting operation, a conversion table for storing in pairs an operation condition for the setting operation and an operation condition for a pull operation, a second operation condition setup unit for setting, by reference to the conversion table, an operation condition for the pull operation in correspondence to the operation condition for the setting operation set by the first operation condition setup unit, and a driving command generation unit for generating driving commands which drive the injection molding machine to perform the setting operation and the pull operation in accordance with the operation conditions set by the first operation condition setup unit and the second operation condition setup unit.

Disclosed is an injection molding system including: a state observation section observing, when injection molding is performed, physical-amounts relating to the injection molding that is being performed; a physical-amount data storage section storing the physical-amount data; a reward-conditions setting section setting reward conditions for machine learning; a reward calculation section calculating a reward based on the physical-amount data and the reward conditions; an operating-conditions adjustment learning section performing machine learning of adjusting operating conditions based on the reward calculated by the reward calculation section, the operating conditions, and the physical-amount data; a learning-result storage section storing a learning result of the machine learning by the operating-conditions adjustment learning section; and an operating-conditions adjustment-amount output section determining and outputting an operating condition to be adjusted and an adjustment amount based on the machine learning by the operating-conditions adjustment learning section.

The present invention provides: a reaction injection molding liquid mixture comprising a norbornene-based monomer, a metathesis polymerization catalyst that includes tungsten as a center metal, an activator, and an ether compound represented by a formula (1), wherein R.sup.1 to R.sup.4 are independently an alkyl group having 1 to 6 carbon atoms, the reaction injection molding liquid mixture comprising the activator and the ether compound in a molar ratio (ether compound/activator) of 0.7/1 to 30/1; a method for producing a reaction injection molded product comprising a reaction injection molding step that includes subjecting the reaction injection molding liquid mixture according to any one of claims 1 to 4 to bulk polymerization inside a mold; a reaction injection molded product obtained using the method for producing a reaction injection molded product. Consequently, the present invention provides: a reaction injection molding liquid mixture that makes it possible to obtain a reaction injection molded product that has an excellent surface (surface state) and exhibits excellent strength while preventing a situation in which the resin remains on the surface of the mold when the resin is removed from the mold, a method for producing a reaction injection molded product using the same, and a reaction injection molded product obtained using the method.

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For each of different resins R, a zero shear viscosity ?o of each resin R is obtained by using a conversion function expression whose parameters are a melt flow rate (MFR) and a set temperature of a heating cylinder and is registered. Also, a purge resin required amount Wu corresponding to a viscosity difference ?d between the zero shear viscosity ?of of a former resin Rf and the zero shear viscosity ?os of a succeeding resin Rs is registered. When resin switching is performed, the zero shear viscosity ?of of the former resin Rf and the zero shear viscosity ?os of the succeeding resin Rs are obtained by inputting the MFR of the former resin Rf and the MFR of the succeeding resin Rs to a molding machine controller, the viscosity difference ?d between the zero shear viscosity ?of of the former resin Rf and the zero shear viscosity ?os of the succeeding resin Rs is obtained, an amount of a purge resin required for resin switching is obtained as a purge resin required amount Wu, and at least the obtained purge resin required amount Wu is displayed.

An apparatus for producing a fiber-reinforced injection molded component includes an injection mold half with a mold cavity and a receiving chamber open to the mold cavity. A band section of a fiber-reinforced plastics band is fed into the receiving chamber through a feed channel and a first clamping device arranged in an initial region of the receiving chamber and a second clamping device arranged in an end region of the receiving chamber clamp the fiber-reinforced plastics band section within the receiving chamber. A first cut-through device arranged in the initial region of the receiving chamber and a second cut-through device arranged in the end region of the receiving chamber cut the band section such that an injection molded component formed in the cavity of the mold includes the cut fiber-reinforced plastics band section and a fiber-reinforced injection molded component is provided.