Siemens Aktiengesellschaft

Axel Knauff

Holger Schunk

Reiner Seufert

Rolf Vollmer

Erich Bott

Rainer Eckert

Michael Zisler

Hubertus Bähr

Jürgen Pawellek

Klaus Oberndorfer

Klaus Greubel

Michael Bzdziuch

Klaus Recker

Uwe Zimmermann

Wolfgang Lienke

Elmar Schaeffers

The drive device () is intended for a machine for the plasticization and injection of synthetic material. It comprises a main drive () drivable in a first and a second direction of rotation and having a hollow shaft () rotatable about an axis of rotation (). An axially bipartite inner reception region () having a first part region () and a second part region () is formed by the hollow shaft (). Rotation transmission means (), arranged at least partially in the first part region (), are provided for the transmission of a rotational movement of the hollow shaft () solely in a first direction of rotation to an extruder worm () rotatable about the axis of rotation (). Conversion means (), arranged at least partially in the second part region (), are provided for the transmission of a rotational movement of the hollow shaft () in the first and a second direction of rotation to a supporting shaft () rotatable about the axis of rotation () and displaceable axially in both directions and for the conversion of the transmitted rotational movement into an axial movement of the supporting shaft ().

Drive for a machine for synthetic material plasticization and injection

The invention relates to a cooling device for an electric machine, in particular, for an electric motor comprising a stator () and a rotor. According to the invention, axial channeled recesses () are provided on the outside of the stators (), in which a cooling tube or cooling hose may be introduced and/or which may be sealed by means of a cover () to give a cooling air channel, an electric motor with such a cooling device and a core sheet () for a lamination bundle of a stator (), the core sheet () comprising amongst other things a number of stator grooves (). The core sheet () comprises recesses () with a channel cross-section on the outer edge thereof. The invention further relates to an electric machine the stator () of which has a lamination bundle made up of a plurality of such core sheets (). The invention also relates to a production method for such electric machines. The cooling tubes or cooling hoses can be simply inserted in the half-open channeled recesses from without for cooling.

Cooling device for an electrical machine, electrical machines having a cooling device such as this, core laminate and production method for such electrical machines

The invention relates to an electric machine () comprising a stator () and a rotor. The stator () includes at least one winding system having a plurality of coils () wherein start and end of the corresponding coils () is fixed on an end face of the stator () by means of a circuit support () and contacted in such a manner as to obtain predeterminable connections of the coils ().

Electric machine with a circuit support

An electric machine, in particular a motor, includes a winding support assembly and a measuring system, preferably an infrared measuring system, The measuring system has at least one sensor and an evaluation unit, whereby the measuring system is integrated in the winding support assembly. The infrared sensor, which operates without making contact with the winding support assembly, provides almost instantaneously a measurement value that is proportional to the actual temperature of the winding system, thereby significantly improving motor protection. The sensor can be embedded and sealed in the winding support assembly.

Electric machine with a winding support assembly and a measuring system

An electric machine includes a heat-generating machine component, and a temperature radiation detector for contactless determination and/or measurement of heat radiating from the machine component for ascertaining an absolute and current temperature of the machine component. In this way, the electric machine can be operated at maximum power, without experience overheating.

Electric machine with improved temperature monitoring system

An electric machine includes a stator, a rotor, an electrically insulated bearing unit for supporting the rotor, a transducer system, and at least one torque support for connecting the transducer system to the rotor and the stator. In order to prevent a potential equalization between the stator and the rotor as a result of currents induced in the rotor, the transducer system is electrically decoupled from the rotor and/or stator.

Electric machine with transducer system

A pair of welding tongs includes two moveable tong arms, with each tong arm including a first arm element with an electrode, a second arm element, and a connecting element disposed between the first and second arm elements, whereby the connecting elements of the tong arms can rotate about a common fixed reference point. An articulated lever is connected to the second arm element. The pair of welding tongs further includes a mechanical coupling to link the articulated levers of the tong arms, and a drive unit for driving the mechanical coupling. The motion of the mechanical coupling is transmitted to each tong arm of the welding tongs.

Welding tongs

An injection unit for an injection-molding machine for processing thermoplastic material is designed in such a way that a direct drive (EM) which meets high dynamic requirements is used for the injection operation and that a standard motor (DM), the rotational speed of which is optimized to the material preparation process by a gear mechanism (R, RS , RS ), is used for the material preparation, in which such dynamic requirements do not exist.

Injection unit for an injection-molding machine

A rotor for permanent magnet synchronous machines with a reduction in the stray flux transmitted through the rotor shaft includes substantially ring-shaped punched sheet metal plates with a central opening for receiving the rotor shaft, and a plurality of recesses arranged in the circumferential direction, wherein at least two permanent magnets can be inserted in each of the recesses. A corresponding intermediate sheet metal segment is arranged or can be arranged in each of the recesses between the permanent magnets. At least one of the recesses is shaped so as to form an air gap between the surface of the intermediate sheet metal segment that is oriented radially inwardly towards the center and an edge of the recess that is oriented radially outwardly from the center, when the permanent magnets are inserted radially towards the outside. The air gap aids in attenuating the stray flux.

Rotor for a permanent magnet synchronous machine

An electric machine, includes a rotor and a shaft centered interiorly of the rotor. An excitation structure is provided for generating a torque upon at least portions of the rotor. The torque from the excitation structure is picked up by a torque receiving structure on the rotor to impart the torque onto the rotor. Disposed between the torque receiving structure and a force-transfer structure for transmitting the torque from the rotor to the shaft is a web structure by which the torque is transmitted to the force transfer structure while effecting an inertial mass relief of the rotor.

Electric machine with a rotor of low inertia

In order to suppress virtually completely the cyclic power variation of a linear synchronous motor, the latter has the following features. At least one primary part ( ) and at least one secondary part ( ), which has a sequence of poles ( ) formed by permanent magnets, and is also larger than the length of the primary part ( ) in the movement direction ( ). The primary part ( ) has primary slots ( ) which are suitable for receiving monophase or polyphase windings. Moreover, the primary part ( ) has means for changing the magnetic force in the movement direction ( ) of the linear motor in the region of the end piece ( ) of the primary part ( ). The end faces ( ) of the end pieces ( ) extend perpendicular to the movement direction ( ) of the linear motor.

Growing community of inventors

Münnerstadt, Germany

Axel Knauff