Abstract: Disclosed is a method for electric clamping, which performs a clamping process in parallel with a core-drawing-in process, avoiding damages of molds and core mechanisms and enabling secure clamping.

Abstract: (Problem to be Solved) The present invention provides a die plate and a mold clamping apparatus equipped with the die plate for a die casting machine and so on capable of reducing dimensions of die length as small as possible. (Solution) A fixed die plate FXPL and a moving die plate MVPL of a mold clamping apparatus on a base BS place a versatile main mold inside, respectively. A pair of insert dies FINS and MINS is carried in to a mold opened space without disturbing tie bars TBU or TBD located in an upper portion or a side portion. The pair of insert dies are separated and fastened to each of the versatile main mold. The die length becomes zero or very small when the moving die plate positions at a mold closing position, and as the result dimension of the mold clamping apparatus in the direction of mold opening and closing can be shortened. Also, particularly the moving die plate can be avoided to tilt.

Abstract: There is provided a mold clamping apparatus which has a space-saving apparatus construction and can easily carry out mold replacement.

Abstract: To provide a mold clamping apparatus able to suppress spout of a molding material from between mating faces of dies and to extend the lifetime of the dies. A mold clamping apparatus has a control apparatus deciding a distribution of a load divided by a plurality of tie bars based on information concerning to the die and controlling pressure of driving oil of a cylinder chamber of each cylinder for mold clamping independently to become a load having a determined distribution.

Abstract: To provide a mold clamping apparatus that a new actuator is not necessary for a mold thickness adjustment and that the mold thickness adjustment can be performed at low cost. A mold clamping apparatus has a tie bar having a piston and a coupled groove, a cylinder for mold clamping that has the piston of the tie bar built in and that pressured driving liquid for generating mold clamping force is supplied, a half nut coupled with the tie bar releasably by meshing with the coupled groove, a position sensor detecting a position of a moving direction of the tie bar, a direction change valve changing a supply of the driving liquid between a first cylinder chamber and a second cylinder chamber, and a control apparatus positioning a position of the tie bar at a position that the half nut and the coupled groove are able to be meshed by controlling the direction change valve in response to the position of the tie bar detected by the position sensor.

Abstract: The present invention provides a die plate and a mold clamping apparatus equipped with the die plate for a die casting machine and so on capable of reducing dimensions of die height as small as possible. (Solution) A fix die plate FXPL and a moving die plate MVPL of a mold clamping apparatus on a base BS place a main mold with versatility inside, respectively. A pair of insert dies FINS and MINS is carried in to a mold opened space without disturbing tie bars TBU or TED located in an upper portion or a side portion. The pair of insert dies are separated and fastened to each of the main mold with versatility. The die height becomes zero or very small when the moving die plate positions at a mold closing position, and as the result dimension of the mold clamping apparatus in the direction of mold opening and closing can be shortened. Also, particularly the moving die plate can be avoided to tilt.

Abstract: (Problem to be solved) The present invention provides a die plate and a mold clamping apparatus equipped with the die plate for a die casting machine and so on capable of reducing dimensions of die height as small as possible. (Solution) A fix die plate FXPL and a moving die plate MVPL of a mold clamping apparatus on a base BS place a main mold with versatility inside, respectively. A pair of insert dies FINS and MINS is carried in to a mold opened space without disturbing tie bars TBU or TBD located in an upper portion or a side portion. The pair of insert dies are separated and fastened to each of the main mold with versatility. The die height becomes zero or very small when the moving die plate positions at a mold closing position, and as the result dimension of the mold clamping apparatus in the direction of mold opening and closing can be shortened. Also, particularly the moving die plate can be avoided to tilt.

Abstract: Disclosed is a method for electric clamping, which performs a clamping process in parallel with a core-drawing-in process, avoiding damages of molds and core mechanisms and enabling secure clamping.

Abstract: There is provided a mold clamping apparatus which has a space-saving apparatus construction and can easily carry out mold replacement.

Abstract: A new clamping machine is disclosed, which can perform a straight-hydraulic mold clamping and a tie-bar drawing-out operation in a reduced working space, and enables a shortened mold exchanging time, by effecting retraction of a movable die plate and a tie-bar drawing-out operation simultaneously. In order to draw out tie bars 18 from a fixed die plate 10 only when molds are exchanged, annular pistons 36, which construct mold clamping cylinders in the fixed die plate, are provided. Abutting each piston, a pair of half nuts 48A, 48B are arranged and driven to engage with an engagement portion 18A provided at one end of each tie bar on the side of the fixed die plate, usually, other than during the drawing out operation. A relative position of each tie bar to the half nuts is set to be able to engage with the half nuts when a right end face of the tie bar contacts with the stopper plate 46.

Abstract: To provide a mold clamping apparatus that a new actuator is not necessary for a mold thickness adjustment and that the mold thickness adjustment can be performed at low cost. A mold clamping apparatus has a tie bar having a piston and a coupled groove, a cylinder for mold clamping that has the piston of the tie bar built in and that pressured driving liquid for generating mold clamping force is supplied, a half nut coupled with the tie bar releasably by meshing with the coupled groove, a position sensor detecting a position of a moving direction of the tie bar, a direction change valve changing a supply of the driving liquid between a first cylinder chamber and a second cylinder chamber, and a control apparatus positioning a position of the tie bar at a position that the half nut and the coupled groove are able to be meshed by controlling the direction change valve in response to the position of the tie bar detected by the position sensor.

Abstract: To provide a mold clamping apparatus able to suppress spout of a molding material from between mating faces of dies and to extend the lifetime of the dies. A mold clamping apparatus has a control apparatus deciding a distribution of a load divided by a plurality of tie bars based on information concerning to the die and controlling pressure of driving oil of a cylinder chamber of each cylinder for mold clamping independently to become a load having a determined distribution.

Abstract: A mold clamping apparatus able to shorten the cycle time required for mold opening and clamping operations and enabling easy pullout of tie bars, provided with a fixed die plate for holding a fixed die, a moveable die plate for holding a moveable die plate and provided movable in mold opening/closing directions, tie bars provided with linking parts at their free ends and supported by the moveable die plate, clamping cylinders provided at the moveable die plate and driving the moveable die plate relative to the tie bars, movement mechanisms for making the moveable die plate move in the mold opening/closing directions and opening and closing the dies, contacting members against which the free ends of the tie bars contact so as to position the tie bars at predetermined positions with respect to the fixed die plate, and half nuts for linking with linking parts of the tie bars positioned at the predetermined positions and linking the tie bars with the fixed die plate.