Slicing machine with motor tower and directly driven circular blade

Patent metadata

Field	Value
Publication number	US-11498236-B2
Application number	US-202016920442-A
Country	US
Kind code	B2
Filing date	Jul 3, 2020
Priority date	Jul 12, 2019
Publication date	Nov 15, 2022
Grant date	Nov 15, 2022

Abstract

A slicing machine cuts slices of cutting material. The slicing machine has: a machine housing holding a motor and circular blade driven by the motor; a product feed, which feeds the cutting material to the circular blade; a stop plate; and a slidably arranged carriage, which feeds the cutting material to the blade. The blade is mounted directly on a bearing shaft arranged in the drive motor for the circular blade. The drive motor includes at a stator and rotor, which is detachable from the stator. The stator is in the machine housing. The machine housing has an insertion opening where, in the assembled state, the stator is arranged and through which the rotor is at least partially inserted into the stator. The slicing machine has an attachment device comprising at least one fastener that is configured to fasten the rotor and the stator to the machine housing.

First claim

The invention claimed is:

1. A slicing machine for cutting slices of extrudate-shaped cutting material, the slicing machine comprising:
a machine housing, which holds a drive motor and a rotating or circumferentially movable circular blade, which is driven by the drive motor;
a product feed, which is configured to feed the cutting material to the circular blade;
a stop plate; and
a slidably arranged carriage, which is configured to feed the cutting material to the circular blade,
wherein the circular blade is mounted directly on a bearing shaft arranged in the drive motor for the circular blade,
wherein the drive motor comprises at least one stator and one rotor,
wherein the stator is arranged in the machine housing,
wherein the machine housing has an insertion opening where, in the assembled state, the stator is arranged and through which the rotor is at least partially inserted into the stator,
wherein the slicing machine has an attachment device comprising a first fastener, the first fastener, in the assembled state, fastening both the rotor to an exterior portion of the machine housing and the stator to an interior portion of the machine housing via a first through opening in the machine housing,
wherein the rotor is configured to be detachable from the stator and the machine housing from outside the machine housing,
wherein the machine housing is configured as a motor tower consisting of a single integral piece, and
wherein the stator, in its assembled state, is sized such that it is incapable of passing through the insertion opening from the interior portion of the motor tower.

2. The slicing machine according to claim 1 , wherein the first through opening is arranged at a periphery of the insertion opening of the machine housing.

3. The slicing machine according to claim 2 , wherein the stator has a fastener receptacle in a circumferential direction for receiving the first fastener.

4. The slicing machine according to claim 3 , wherein the stator and the rotor are configured to interface with the machine housing such that the fastener receptacle of the stator and second through-opening of the rotor are aligned with the first through-opening of the attachment device in order to introduce the first fastener.

5. The slicing machine according to claim 1 , wherein the rotor has a second through-opening in a circumferential direction for introducing the first fastener.

6. The slicing machine according to claim 1 , wherein at least part of the bearing shaft is arranged in the rotor outside the machine housing.

7. The slicing machine according to claim 1 , wherein the attachment device at a periphery of the insertion opening of the machine housing has a stepped recess or a chamfer for a centering insertion of the rotor.

8. The slicing machine according to claim 1 , wherein the attachment device comprises a lip for holding the stator or the rotor that is arranged on an inner wall of the machine housing.

9. The slicing machine according to claim 1 , wherein a protective cap is arranged on the rotor in a circumferential direction and in a manner abutting the machine housing and the circular blade.

10. The slicing machine according to claim 1 , wherein the rotor has a fastening body which is, using the attachment device, is fastenable to the machine housing or to the stator, in the fastening body, the bearing shaft with the circular blade is mounted rotatably.

11. The slicing machine according to claim 10 , wherein the bearing shaft is fluid-sealed relative to the interior of the machine housing.

12. The slicing machine according to claim 1 , wherein the rotor has an abutment section which at one end is firmly seated on the bearing shaft and is connected by a spacer to ball bearings, which separate a holding section connected to the stator from the rotatable bearing shaft, wherein the spacer has a narrower diameter than the abutment section and the holding section.

13. The slicing machine according to claim 1 , wherein the stator has an insertion ring for insertion into the insertion opening of the machine housing.

14. The slicing machine according to claim 1 , wherein the insertion opening of the machine housing has a circular or square cross-section.

15. The slicing machine according to claim 1 ,
wherein a portion of the attachment device is integrated into to the machine housing, the portion of the attachment device that is integrated into the machine housing has an interior face and an exterior face, and a lip portion extending from the interior face to the exterior face, the lip portion defining the insertion opening,
wherein the stator comprises a circumferential face and a circumferential protrusion extending longitudinally from the circumferential face,
wherein, in the assembled state, the circumferential face of the stator abuts the interior face of the attachment device,
wherein, in the assembled state, the circumferential protrusion extends into insertion opening and abuts the lip portion of the attachment device,
wherein the rotor comprises a protrusion extending in a radial direction, the protrusion having a bearing face,
wherein, in the assembled state, bearing face of the protrusion abuts the exterior face of the attachment device, and
wherein the first fastener extends through the protrusion of the rotor, the exterior face of the attachment device, the interior face of the attachment device, and the circumferential face of the stator, with the exterior face and the interior face of the attachment device being interposed between the circumferential face of the stator and the protrusion of the rotor.

16. A method of manufacturing a slicing machine, the method comprising:
providing: a two-part drive motor, with a stator and a rotor, a machine housing, with a insertion opening, and an attachment device;
pre-assembling the stator inside the machine housing at the insertion opening;
introducing the rotor, from outside the machine housing through the insertion opening, into the stator;
using a first fastener, fastening both the rotor to an exterior portion of the machine housing and the stator to an interior portion of the machine housing via a first through opening in the machine housing, the rotor being fastened such that it is capable of being detached from the machine housing and the rotor from outside the machine housing; and
fastening a circular blade to the rotor outside of the machine housing,
wherein the machine housing is configured as a motor tower consisting of a single integral piece, and
wherein the pre-assembling the stator inside the machine housing comprises inserting components of the stator in the interior portion of the motor tower and assembling the stator, the assembled stator being sized such that it is incapable of passing through the insertion opening.

Assignees

• Bizerba Se & Co Kg

Inventors

• Oesterle Markus

Classifications

• B26D5/086 Primary

  Electric, magnetic, piezoelectric, electro-magnetic means · CPC title

• B26D7/2621

  for circular cutters · CPC title

• B26D2210/02

  for cutting food products, e.g. food slicers · CPC title

• B26D1/14

  with a circular cutting member, e.g. disc cutter · CPC title

• B26D7/0616 Primary

  by carriages, e.g. for slicing machines · CPC title