Abstract: A method for producing a three-dimensional object from solidifiable material, which is either present in the starting state in a fluid phase or can be liquefied, by the sequential discharge of drops from at least one pressurisable material storage device for the fluid phase by means of at least one discharge unit through an outlet provided with a pulsable closure element, the closure element is actuated by means of an actuator and its initial stressing is measured at the operating point by means of the actuator, where the initial stressing is controlled by means of an adjusting element, and a mapping for the elastic deformation of the closure element is determined by means of the actuator actuated by the adjusting element, such that an elastic working range of the closure element is adjusted by means of the adjusting element within the mapping.

Abstract: The invention relates to a method which is used to operate an injection molding machine for processing plastics, which has a mold closing unit (F) for opening and closing an injection mold (M) having at least one mold cavity (12) in order to produce an injection molded part (13), an injection molding unit (S) for plasticizing and injecting new plasticizable material into the mold cavity (12), and a control system (11) for operating the injection molding machine (10). Stored in the control system is expert knowledge (E) about the operation of the injection molding machine and the peripheral devices (P) of the latter which may possibly be present and about the production of injection molded parts (13) using injection molding technology, in order to produce an injection molded part (13) using interactive contact as needed by an operator by using injection molding parameters.

Abstract: The invention relates to a method for producing a three-dimensional object (50) by means of generative construction in a direct constructional sequence from at least one solidifiable material. At least one material component is discharged in a programmable way via a control device in the direct constructional sequence and, as a result of the discharge, produces structurally different regions of the object (50) that are joined together, wherein geometric relationships obtained during the discharge already correspond to the object (50).

Abstract: In a method for operating a hydraulic device for providing a supply to hydraulic consumers (V) on a plastics injection moulding machine, provision is made of a pump (10) with a volumetric delivery characteristic that results in cyclic pulsations and of a servomotor (11) with multiple poles that result in cyclic pulsations. The pressure at the hydraulic consumer (V) is detected and is input as an actual value into a pressure regulator (13) that readjusts the servomotor (11), on the basis of a predefined pressure profile, to a pressure setpoint value at the hydraulic consumer (V). The cyclic pressure pulsation is minimized in that, by means of a rotational angle sensor (20), the rotational angle (?) of the pump (10) and/or of the servomotor (11) is detected and correlated with the cyclic pulsations, and in that, from this, a corrective value or a corrective function is determined and is transmitted to the pressure regulator (13) with control subordinate to the regulation of the pressure setpoint value.

Abstract: A method serves to produce a three-dimensional object by additive construction in direct construction sequence from solidifiable material, which is either present in the starting state in a fluid phase or can be liquefied, where multiple material components are discharged alternately in a programmable manner by means of multiple discharge units and configure different parts of the object joined to one another as a result of the discharge, where the geometric proportions obtained during discharge already correspond to the object, and because the material components form between them either edge regions merging into one another without boundaries or boundary regions of the different material components abutting one another without joining, a method and an object produced therewith can be provided, in which boundary and edge regions are formed “as if from one piece” between different material components even in the case of complex geometries.

Abstract: The invention relates to a device for producing a three-dimensional object (50) from solidifable material in a liquid phase. Said device comprises at least one preparation unit for preparing the solidifiable material in the liquid phase, at least one pressure generating unit (60) for generating a pressure in the liquid phase and at least one discharge unit (12) for discharging the solidifiable material through an outlet opening. Said pressure generation unit comprises a rotation motor and an axial movement motor (10) for moving conveyor means, said rotation motor being arranged behind the axial movement motor (10) when viewed from the discharge unit (12). The invention also relates to a device for providing high forces at low speeds.

Abstract: In a method for discharging a volume flow consisting of successive drops to produce a three-dimensional object of solidifiable material present in a fluid phase, the fluid phase of the material is introduced into a material storage means. A pressure (p) is applied to the fluid phase, in order to discharge the material in drops out of a cyclable outlet opening to build up the three-dimensional object in a construction chamber. A method is provided for achieving a constant, discontinuous volume flow by the pressure (p) being regulated via a closed-loop control in the event of a change in the viscosity of the fluid phase of the material, while maintaining the other process parameters, to achieve a predetermined drop size. The pressure is applied by a conveying element, the average displacement velocity of the conveying element per discharged drop being converted as a measured variable into the control variable for the closed-loop control.

Abstract: A device for producing a three-dimensional object from hardenable material has a construction space (20) for constructing the object (50), a temperature control unit for controlling the temperature of the construction space (20), and a preparation unit (11) for preparing the hardenable material in such a way that the material is in the fluid phase. A pressure generation unit (10) applies pressure to the fluid phase in the preparation unit. A discharge unit (12) is provided for discharging the hardenable material through an outlet (12b) in the form of drops in the direction of the construction space (20). In order to optimize the energy required to control the temperature that promotes bonding of the material on the object (50), the temperature-controlled construction space (20) is surrounded by a construction space frame (18) in which at least the outlet of the discharge unit (12), the preparation unit (11), and the object support (13) for producing the object are accommodated.

Abstract: A method for producing a three-dimensional object from solidifiable material, which is either present in the starting state in a fluid phase or can be liquefied, by the sequential discharge of drops from at least one pressurisable material storage device for the fluid phase by means of at least one discharge unit through an outlet provided with a pulsable closure element, the closure element is actuated by means of an actuator and its initial stressing is measured at the operating point by means of the actuator, where the initial stressing is controlled by means of an adjusting element, and a mapping for the elastic deformation of the closure element is determined by means of the actuator actuated by the adjusting element, such that an elastic working range of the closure element is adjusted by means of the adjusting element within the mapping.