Abstract: Disclosed is a drive unit, in particular for an injection unit or an ejector of an injection molding machine, comprising a stroke spindle device with a spindle and a spindle nut, and a prestressing device for prestressing the spindle that is dischargeable in a displacement phase of the stroke spindle device and is chargeable when the spindle is driven in the opposite direction, wherein the stroke spindle device and the prestressing device are supported by the same component, and wherein a load measuring device is provided for measuring the load acting on the spindle, which senses the forces acting on the component.

Abstract: A device for controlling the drawing process in a transfer press has two tool parts which act in opposition to one another and between which the workpiece to be deformed is held. One tool part is moved between two reversal points by a mechanical crank mechanism driven at a constant rotational speed. The second tool part is connected to the piston of a hydraulic differential cylinder via a piston rod. The movement of the piston is controlled by the supply of pressure medium into a first chamber and by the discharge of pressure medium out of the second chamber of the differential cylinder. During a first time segment within a range delimited by the first and the second reversal point, the rod-side face of the piston is acted upon by a pressure which is sufficiently high to accelerate the second tool part as that, when the two tool parts impinge one onto the other, both tool parts move virtually at the same speed.

Abstract: The invention relates to a hydrostatic piston engine (11) and a drive (1) for recovering brake energy. The drive comprises a driving shaft (4) and a first accumulator (12) for accumulating pressure energy. The first accumulator (12) is connected to a hydrostatic piston engine (11). Said hydrostatic piston engine (11) has a coupling (9) and can be connected to the driving shaft (4) by means of the coupling (9). The hydrostatic piston engine (11) comprises a housing in which a cylinder drum and the driving shaft (4) are rotatably received. The cylinder drum can be connected to the driving shaft (4) by means of the coupling (9) in a rotationally fixed manner.

Abstract: There is disclosed a variable metering orifice arrangement for a current divider and current adding device, the metering orifice arrangement including one or more working terminals by each of which a consumer can be supplied with pressure fluid. The metering orifice arrangement includes a metering orifice piston to which control pressure tapped off between two throttles of a pressure divider can be applied, wherein at least one of the throttles is variable.

Abstract: The invention relates to a method for remote-control programming and to a machine control system 2 for performing the method. To refine the method so as to simplify and shorten an execution operation of a control program source yet automatically avoid version conflicts between the control program source and the compilate in the machine control system, it is proposed that the program source 3a stored in memory in the machine control system be executed by means of a programming device 1, and after the execution, the compilate of the executed program source is generated and stored in memory in the machine control system, where it is made available to a control module.

Abstract: The invention is directed to an injection unit, in particular for an injection molding machine, comprising a screw which is guided in a plastication cylinder in a rotatable and axially movable manner and via which plastic material undergoes plastication and can be injected into a tool cavity. The screw is driven via an electric drive including an electric motor and is operatively connected to a support cylinder having a pressure chamber to which dynamic and/or support pressure can be applied during plastication and injection. The electric motor is coupled to a hydrostatic machine which during plastication is driven by the pressure medium displaced from the pressure chamber and which during injection conveys pressure medium into the pressure chamber so as to build up support pressure.

Abstract: A method for regulating a web tension of a continuous materials which is moving using a transport device with a web-tension controller, includes determining controller characteristic parameters, and using for the determining of controller characteristic parameters a characteristic which is specifiable as a function and/or at several support points.

Abstract: A linear device has an essentially rod-shaped functional unit and a functional unit that at least partially encompasses the rod-shaped functional unit and includes a main body and at least one end plate unit that rests with a contact surface against the main body in which a lubrication groove is provided, which is open toward the contact surface and extends at least partially in the circumference direction around the rod-shaped functional unit, and it is possible to fasten the end plate unit to the main body by only two fastening elements, and a region of the contact surface adjacent to the lubrication groove and encompassing this lubrication groove is raised in relation to the rest of the contact surface.

Abstract: A linear motor includes a primary part arranged as a guideway stator and at least one secondary part that is movable with respect to the primary part, the at least one secondary part having device(s) for controlling the generation of a magnetic field, causing its motion, in the primary part. It is possible to avoid costly control devices for the application of current to the stator.

Abstract: A device (30) for feeding working fluid to an assembly (14) requiring working fluid includes at least one fluid channel (20, 20a-20d) extending from a surface (16a) and at least one screw element (22, 24) capable of being screwed from the surface (16a) into the at least one fluid channel (20, 20a-20d) for feeding working fluid into the fluid channel (20, 20a-20d) or for closing the fluid channel (20, 20a-20d), the at least one fluid channel (20, 20a-20d) having a first section (32) directly adjacent to the surface (16a) with a larger width, a second section (36) with a smaller width and, between the first section (32) and the second section (36), having a first transition region (34) with an annular surface (34a), and the screw element (22, 24) having at least one sealing surface (22c, 24c) capable of being brought into sealing engagement with the annular surface (34a).

Abstract: A method for data transmission between participants communicating by means of a data bus, in which as high a transmission likelihood for additional data as possible is to be assured by providing that in the exchange of data telegrams between the participants within the cycle time 13a predetermined for one transmission cycle 13, at least one first and at least one second time slot 11, 12 are used, and the first time slot 11 serves to forward process data and the second time slot 12 serves to forward additional data, and the length of the data telegrams representing the additional data is predeterminable within the length of the corresponding time slot 12.

Abstract: A linear guide unit, in particular a gantry axis, that has an oblong guide support (14), is provided with two essentially parallel guide rails (24, 26) extending in the guide direction (F), but rotated in relation to each other around a rotation axis (V) parallel to the guide direction (F), each of which guide rails (24, 26) has at least one sliding carriage (36, 38) guided on it so that it can slide in the guide direction (F), the sliding carriages (36, 38) being connected to a sliding carriage assembly (36, 38) capable of moving as a unit in the guide direction (F). According to the present invention, the two guide rails (24, 26) rest essentially without moving play against at least two counterpart support surfaces (GF24, GF24L, GF24R, GF26, GF26L, GF26R) of the guide support (14) extending essentially in the guide direction (F), two of the counterpart support surfaces (GF24, GF24L, GF24R, GF26, GF26L, GF26R) enclosing a predetermined angle, preferably of at most 90°, between them.

Abstract: A circuit arrangement and a method for the DC-isolated driving of a semiconductor switch, wherein the circuit arrangement has a control circuit, a driver, a transformer for the DC-isolated transfer of a drive signal from the controller as switching signal into the driver and means for rectifying the switching signal, wherein the driver contains the semiconductor switch having a gate, a source and a drain, wherein the semiconductor switch can be switched by a predetermined first voltage between the gate and the source with the result that a predetermined current flows between the drain and the source, wherein the switching signal can be applied to the gate in order to switch the semiconductor switch, wherein the driver contains a control transistor having a base, an emitter and a collector, wherein the control transistor can be switched by a predetermined second voltage between the base and the emitter, with the result that the gate of the semiconductor switch can be connected to the source of the semiconducto

Abstract: A conveyor system (10) includes a conveyor course (12), which has a curved portion and two tracks (22, 24) located one above the other, and a conveyor carriage (14); each of the tracks (22, 24) is assigned at least one horizontal track roller (34, 36) of the conveyor carriage (14), and at least one of the tracks (22, 24) is assigned a further horizontal track roller (34, 36), which is spaced apart in the conveying direction (L) from the one track roller (34, 36) associated with the same track (22, 24). The axes of rotation (A, B) of the two track rollers (34, 36) are located in alignment with one another; and, whenever both tracks (22, 24) are each assigned a further track roller (34, 36), the axes of rotation (A, B) of these further track rollers (34, 36) are likewise in alignment with one another.

Abstract: An electric tool has a handle, and an element for varying tool functions located in the handle and including a photoelectric cell incorporated onto the handle in such a way that if the photoelectric cell is completely or partly covered, a tool function is achieved on a specification in accordance with a predetermined sequence.

Abstract: The invention relates to a rotary control device intended, in particular, for being fixed to a handle of a remote control of a heavy-construction machine, comprising: a housing to be fastened to the handgrip in a fixed manner; a moving actuating part that rotates relative to the housing about an axis; first means for generating a rate control signal starting from the angular position of the moving actuating part, comprising a moving part driven by the actuating part and a part fixed to the housing, the moving actuating part being able to be driven by the operator in two opposite directions starting from a home position up to elastic means.

Abstract: Disclosed is a drive unit, in particular for a closing unit, an injection unit, or an ejector of an injection molding machine. The drive unit comprises a double-acting force transmitting element provided with a small and a large piston unit which are disposed in a cylinder. The large piston unit is adapted to be pressurized by a great force both in input and in output directions. According to the invention, both the large piston unit with respect to the cylinder and the cylinder with respect to a movable element of the drive of the small piston unit are spring-prestressed.

Abstract: A node for communications in a transportation network comprises a processor, a memory, a communication device, and a set of instructions executable by the processor for: extracting information from a first message, making a first determination based at least in part on the information; and making a second determination as to whether a second message should be sent based on the first determination.

Abstract: An actuator is disclosed, in particular for a locking unit of an injection compression machine, comprising a hydraulic force translator with two piston units moving relative to each other with different effective areas. The foregoing enclose a pressure chamber together with a cylinder or spacer of the force translator. The smaller piston unit is electrically driven, wherein the axial displacement of the smaller piston unit may be transmitted to the cylinder. The cylinder can be fixed relative to a chassis of the injection compression machine by means of a hydraulic clamping device. According to the invention, the pressure necessary for clamping is delivered by a high-pressure reservoir which may be charged during the displacement of the smaller piston unit.

Abstract: In a threaded drive having a load-bearing nut and a catch nut, for securing against a load-bearing nut, the catch nut is urged by a spring against an axial bearing face of the load-bearing nut.