Abstract: The invention relates to a pressing system, including a press having a first pressing tool and a second pressing tool. The first pressing tool and the second pressing tool being movable relative to one another to form a working space. A workpiece, a pressure generating device for generating a pressure curve acting on the workpiece in the working space, a temperature generating device for generating a temperature curve acting on the workpiece in the working space the workpiece running through an elongation curve (DVW) depending on the pressure curve acting in the working space and on the temperature curve acting in the working space. The first pressing tool and the second pressing tool running through a respective elongation curve (DVP1, DVP2) depending on the pressure curve acting in the working space and on the temperature curve acting in the working space, wherein the first pressing tool and/or the second pressing tool are designed such that their elongation curve (DVP1, DVP2) deviates by no more than 3.

Abstract: The invention relates to a method for checking at least one field effect transistor (11) connected as an active diode, which is connected downstream of an output of a power supply unit (1) within a power supply device.

Abstract: A method and a device for producing a component from a fiber composite material. The method includes introducing multiple layers of fibers impregnated with a matrix onto an inner mold, placing a membrane sealed against an outer mold onto the fibers impregnated with the matrix, such that a cavity extending along the shell surface of the outer mold forms between the outer mold and the membrane, and applying a temperature-controllable pressure fluid to the cavity at a temperature greater than the melting point of the matrix and at a pressure greater than the ambient pressure. To produce a component having at least one reinforcing layer, at least one reinforcing layer having fibers oriented in a predominantly parallel manner is placed locally onto a portion of a side of a the base layer facing the outer mold with the aid of an insertion device and a membrane with an average surface roughness of below 1.0 ?m, preferably below 0.1 ?m, subsequently exerts a set pressure in the cavity on the component.

Abstract: Provided is a method for pretensioning the membrane of a press, including the following steps: a) providing a press having a first pressing tool, a second pressing tool and a membrane. The first pressing tool and the second pressing tool are movable relative to one another, wherein the membrane is connected to one of the pressing tools. A cavity for a working medium is formed between the membrane and the pressing tool connected thereto. The cavity is sealed by at least one seal which presses onto the membrane with a sealing force; b) providing at least one workpiece, wherein the workpiece includes a matrix and fibres embedded therein; c) inserting the workpiece into the press; d) closing the press; e) subjecting the workpiece to pressure and/or to heat by means of the membrane. A cured shaped part is formed from the workpiece; and f) opening the press and removing the shaped part.

Abstract: The invention relates to a method for producing molded parts from fiber composite material, including the following steps: a) providing a press having a first press tool, a second press tool and a membrane. The first press tool and the second press tool are movable relative to each other. The membrane is connected to one of the press tools, a cavity for a working medium being formed between the membrane and the press tool connected thereto, a working chamber for a workpiece being formed in the other press tool, and the volume of the working chamber being modifiable by a movement of the membrane when the press is closed, b) providing at least one workpiece having a workpiece volume. The workpiece has a matrix and fibers inserted therein, c) inserting the workpiece into the working chamber of the press, d) closing the press. The working chamber takes up a first volume, e) applying pressure and/or temperature to the workpiece by means of the membrane.

Abstract: A method is specified for producing a structural component, in particular for an aircraft, ground vehicle, or watercraft, or for a rotor blade of a wind turbine, in which method an arrangement of fibers and plastic material is laid in a mold and subjected to an increased pressure and an increased temperature, wherein a mold is used which comprises at least one recess in which a reinforcing element is arranged. The object is to be able to cost-effectively produce a structural component of this type. For this purpose, it is provided that the reinforcing element is laid in the recess together with a core, wherein a differential volume between the recess and core, at least in a predetermined region, is chosen such that it is smaller than a segment of the reinforcing element arranged in said region by a predetermined amount.

Abstract: A method for producing a component from a fiber-composite material includes introducing a fiber impregnated with a matrix onto the inner mold of a mold space formed between the inner mold and an outer mold, introducing a separating membrane onto the fiber impregnated with the matrix such that a cavity extending along the lateral surface of the outer mold is formed between the outer mold and the separating membrane, supplying a thermal oil to the cavity at a pressure that is greater than ambient pressure such that the thermal oil acts on the separating membrane at the pressure, heating the thermal oil to above a glass transition temperature of the matrix, and cooling the thermal to below the glass transition temperature of the matrix, wherein the pressure of the thermal oil on the separating membrane is kept substantially constant at least during the cooling to below the glass transition temperature.

Abstract: An apparatus for distributing current in a low-voltage system includes a plurality of disk-shaped modules that can be arranged adjacent to each other in a row and mounted or locked on a carrier rail. At least one supply module, at least one fuse module, and at least one distributing module are provided. The modules have at least one cross connector for a positive potential and at least one cross connector for a negative potential. The fuse module and the distributing module also have at least one additional cross connector for a potential that is protected by the fuse module.

Abstract: An apparatus for distributing current in a low-voltage system includes a plurality of disk-shaped modules that can be arranged adjacent to each other in a row and mounted or locked on a carrier rail. At least one supply module, at least one fuse module, and at least one distributing module are provided. The modules have at least one cross connector for a positive potential and at least one cross connector for a negative potential. The fuse module and the distributing module also have at least one additional cross connector for a potential that is protected by the fuse module.

Abstract: The invention relates to an installation for applying glue to fibers for the production of fiberboard, especially MDF board or similar wood material board. Said installation comprises a fiber feed unit having at least one fiber feed conduit which opens into a fiber exit tube via a fiber deflection element and receives the air that is used to transport the fibers, a chute which is located downstream of the fiber exit tube, a glue application device which has spray nozzles for spraying the fibers that emerge from the fiber exit tube and enter the chute with drops of glue, and a collection device, located downstream of the chute and having an air-permeable transport belt for collecting and optionally carrying off the fibers and a suction device located below the transport belt for suctioning air from the chute through the transport belt, the suction device having one or more suction boxes to which one or more suction pipes are connected.

Abstract: The invention relates to an installation for applying glue to fibers for the production of fiberboard, especially MDF board or similar wood material board. Said installation comprises a fiber feed unit having at least one fiber feed conduit which opens into a fiber exit tube via a fiber deflection element and receives the air that is used to transport the fibers, a chute which is located downstream of the fiber exit tube, a glue application device which has spray nozzles for spraying the fibers that emerge from the fiber exit tube and enter the chute with drops of glue, and a collection device, located downstream of the chute and having an air-permeable transport belt for collecting and optionally carrying off the fibers and a suction device located below the transport belt for suctioning air from the chute through the transport belt, the suction device having one or more suction boxes to which one or more suction pipes are connected.

Abstract: The invention relates to an installation for applying glue to fibers for the production of fiberboard, especially MDF board or similar wood material board. Said installation comprises a fiber feed unit having at least one fiber feed conduit which opens into a fiber exit tube via an arched fiber deflection element and receives the air that is used to transport the fibers, a chute which is located downstream of the fiber exit tube, a glue application device which is located e.g. between the fiber exit tube and the chute and which has spray nozzles for spraying the fibers that emerge from the fiber exit tube and enter the chute with drops of glue, and a collection device, located downstream of the chute and having a transport device for collecting and optionally carrying off the fibers.

Abstract: The invention relates to an installation for applying glue to fibers for the production of fiberboard, especially MDF board or similar wood material board. Said installation comprises a fiber feed unit having at least one fiber feed conduit which opens into a fiber exit tube via e.g. an arched fiber deflection element and receives the air that is used to transport the fibers, a chute which is located downstream of the fiber exit tube, a glue application device which is located between the fiber exit tube and the chute and which has spray nozzles for spraying the fibers that emerge from the fiber exit tube and enter the chute with drops of glue, and a collection device, located downstream of the chute and having a transport device for collecting and optionally carrying off the fibers and a suction device for suctioning air from the chute through the transport belt.

Abstract: A press for crimping longitudinal edges of a plate for the manufacture of pipe has a closed press frame, an upper press platen, and a lower press platen extending longitudinally through the frame. A pair of transversely spaced and transversely shiftable upper supports are provided on the upper platen, and a pair of transversely spaced and transversely shiftable lower supports on the lower platen. Respective upper dies are fixed in the upper supports and have downwardly directed lower faces, and respective lower dies are fixed in the lower supports and have upwardly directed upper faces. A piston/cylinder assembly braced between the frame and one of the platens and pressurizable to shift the one platen vertically toward the other of the platens. Hydraulic actuators may position the holders and their dies transversely and also lock them in place.

Abstract: The invention relates to an installation for applying glue to fibers for the production of fiberboard, especially MDF board or similar wood material board. Said installation comprises a fiber feed unit having at least one fiber feed conduit which opens into a fiber exit tube via an arched fiber deflection element and receives the air that is used to transport the fibers, a chute which is located downstream of the fiber exit tube, a glue application device which is located e.g. between the fiber exit tube and the chute and which has spray nozzles for spraying the fibers that emerge from the fiber exit tube and enter the chute with drops of glue, and a collection device, located downstream of the chute and having a transport device for collecting and optionally carrying off the fibers.

Abstract: The invention relates to an installation for applying glue to fibers for the production of fiberboard, especially MDF board or similar wood material board. Said installation comprises a fiber feed unit having at least one fiber feed conduit which opens into a fiber exit tube via e.g. an arched fiber deflection element and receives the air that is used to transport the fibers, a chute which is located downstream of the fiber exit tube, a glue application device which is located between the fiber exit tube and the chute and which has spray nozzles for spraying the fibers that emerge from the fiber exit tube and enter the chute with drops of glue, and a collection device, located downstream of the chute and having a transport device for collecting and optionally carrying off the fibers and a suction device for suctioning air from the chute through the transport belt.

Abstract: A press for pressing a mat into a thin panel has a press frame, upper and lower press plates on the frame, and upper and lower press belts having confronting lower and upper stretches defining a press gap extending in a horizontal and longitudinal transport direction and respectively running below and above the upper and lower press plates. Upper and lower flexible intake plates are juxtaposed respectively above and below upstream ends of the lower and upper stretches of the belts and define therewith a downstream portion of an intake mouth flaring upstream. Upper and lower rollers are respectively braced against the upper and lower stretches of the belts at an upstream portion of the intake mouth immediately upstream of the downstream portion of the intake mouth. Further actuators connected to the rollers set a shape of the upstream portion of the intake mouth.

Abstract: A press for crimping longitudinal edges of a plate for the manufacture of pipe has a closed press frame, an upper press platen, and a lower press platen extending longitudinally through the frame. A pair of transversely spaced and transversely shiftable upper supports are provided on the upper platen, and a pair of transversely spaced and transversely shiftable lower supports on the lower platen. Respective upper dies are fixed in the upper supports and have downwardly directed lower faces, and respective lower dies are fixed in the lower supports and have upwardly directed upper faces. A piston/cylinder assembly braced between the frame and one of the platens and pressurizable to shift the one platen vertically toward the other of the platens. Hydraulic actuators may position the holders and their dies transversely and also lock them in place.

Abstract: A press, especially a multilevel press, has a press stand of one or more press frames whose head and foot pieces are of cast iron and whose vertical uprights or tension shanks are of steel plate construction and formed with T or hammerheads bearing on the head piece or foot piece.

Abstract: The roller bar chains of a continuous press for producing pressed board provided sufficient play for the roller bars relative to the link chains by having the journaling pins for the link chains extending through bushings which articulate the overlapping link plates together, so that the outer diameters of the pins within these bushings are less than the inner diameters of the bushings. The result is that the roller bar chain has only a single guide plane in the press region between the two press plates.