Drive apparatus for a plastics processing machine
AssigneeSiemens Aktiengesellschaft
InventorsHolger Schunk, Andreas Tschanter, Peter Kress
Life of this patent
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Abstract
A drive apparatus unit for components of a plastics processing machine includes a motor unit which is provided with a rotor having a hollow shaft, and a thrust bearing assembly for mounting a driveshaft of the plastics processing machine. The thrust bearing assembly is fully or partly disposed within the hollow shaft. By arranging the thrust bearing assembly within the hollow shaft, the size of the drive apparatus is reduced to the size of the motor unit.
Claims22
A drive apparatus for a plastics processing machine, comprising:
- a motor unit having a hollow shaft for support of a rotor;
- a face plate attached to one end surface of the motor unit;
- and
- a thrust bearing assembly mounted to the face plate for support of a driveshaft of the plastics processing machine, said thrust bearing assembly being disposed, at least partially, in the hollow shaft in coaxial relationship thereto.
A set of modular elements for the construction of a drive apparatus for a plastics processing machine, said set comprising:
- a motor unit including a housing defining an interior space, and a hollow shaft which extends across the interior space of the housing and supports a rotor interacting with a stator across an air gap;
- a transmission unit, received in the hollow shaft at one end thereof, for transmitting a torque from the motor unit onto a driveshaft of a plastics processing machine;
- a thrust bearing assembly, received in the hollow shaft at another end thereof in coaxial relationship thereto, for supporting a shaft stub having an end portion to provide an abutment for the driveshaft;
- and
- a face plate detachably secured to the housing in confronting relationship to the thrust bearing assembly.
An extruder, comprising:
- an extruder screw;
- and
- a drive apparatus for operating the extruder screw, said drive apparatus including a motor unit having a rotor with a hollow shaft in driving relationship with the extruder screw, a face plate attached to one end surface of the motor unit, and a thrust bearing assembly mounted to the face plate for support of the extruder screw and disposed, at least partially, in the hollow shaft in coaxial relationship thereto.
An injection molding machine, comprising a clamping unit for an injection mold;
- and a drive apparatus including a motor unit having a rotor with a hollow shaft, a face plate attached to one end surface of the motor unit, and a thrust bearing assembly mounted to the face plate for support of a driveshaft for the clamping unit, and disposed, at least partially, in the hollow shaft in coaxial relationship thereto.
Dependencies are inferred from the claim text.