Interface between knife and knife holder

Patent metadata

Field	Value
Publication number	US-9737942-B2
Application number	US-201414506207-A
Country	US
Kind code	B2
Filing date	Oct 3, 2014
Priority date	Apr 5, 2012
Publication date	Aug 22, 2017
Grant date	Aug 22, 2017

Abstract

The invention relates to an interface between a knife and a knife holder, wherein the knife and the knife holder are designed such that the knife can be mounted on the knife holder in such a way that the knife is initially positioned on the knife holder in the axial direction, and then by rotating either the knife relative to the knife holder and/or the knife holder relative to the knife, the knife is locked on the knife holder with respect to the axial direction, wherein the knife has a single central fastening opening which is delimited by a knife edge region, and the knife holder has a fastening section for the fastening opening of the knife, which is delimited by a holder edge region.

First claim

What is claimed is:

1. A system comprising:
a blade for a high-speed slicer, the blade being configured for rotation about a rotational axis and configured for attachment to a blade mount of the slicer by first moving the blade in an axial direction parallel to the rotational axis to place the blade on the blade mount and then securing the blade in the axial direction by rotating the blade about the rotational axis and relative to the blade mount and/or by rotating the blade mount about the rotational axis and relative to the blade, wherein:
the blade has a single fastening opening defined by an opening edge for attachment to the blade mount;

the opening edge has a non-circular shape;
the opening edge defines a plurality of blade projections arranged in intervals along the fastening opening and extending radially inward toward the rotational axis;
the plurality of blade projections have a uniform thickness in the axial direction;
at least two adjacent ones of the plurality of blade projections each has an undercut, the undercuts forming a pocket that extends in a peripheral direction;
the pocket is configured to receive a pair of pins on the blade mount and extend partially around a perimeter surface of the pins; and
the blade mount, which is configured such that the blade is attachable thereto by first setting the blade is-onto the blade mount in the axial direction and subsequently locking the blade with respect to the axial direction at the blade mount by rotating the blade relative to the blade mount and/or by rotating the blade mount relative to the blade, wherein:
the pins engage the undercuts in the two adjacent ones of the plurality of blade projections to prevent the blade from rotating relative to the blade mount; and
at least one of the pins is preloaded by a spring that causes the pin to move upward into the pocket formed by the undercuts when the pocket is above the pin.

2. A system in accordance with claim 1 , wherein the blade has the same axial thickness at the opening edge as in an inner blade region adjacent to the opening edge.

3. A system in accordance with claim 2 , wherein the opening edge is flush with the inner blade region at a rear side of the blade and/or at a front side of the blade.

4. A system in accordance with claim 1 , wherein the blade is configured to be locked to the blade mount via a bayonet fastening.

5. A system in accordance with claim 4 , wherein the opening edge differs from a circular shape and is configured as a component of the bayonet fastening.

6. A system in accordance with claim 4 , wherein the plurality of blade projections are configured as a component of the bayonet fastening.

7. A system in accordance with claim 1 , wherein the blade has an anti-rotation mechanism.

8. A system in accordance with claim 7 , wherein the anti-rotation mechanism comprises the undercut in each of the at least two adjacent ones of the plurality of blade projections.

9. A system in accordance with claim 1 , wherein the plurality of blade projections are configured as a component of an attachment aid, with the opening edge having an asymmetrical portion that differs from a remaining extent of the opening edge.

10. A system in accordance with claim 9 , wherein the opening edge has exactly one asymmetrical portion at which the opening edge differs from the remaining extent.

11. A system in accordance with claim 9 , wherein the asymmetrical portion includes a blade tab which differs with respect to its shape and/or size from other blade projections of the opening edge.

12. A system in accordance with claim 1 , wherein at least one of:
a radius of a fastening opening amounts to at least 1/10 of a greatest radius of the blade; and
an area of the fastening opening amounts to at least ⅙ of a total area of the blade.

13. A system in accordance with claim 1 , wherein the blade mount has a fastening section for a fastening opening of the blade which is bounded by a marginal mount region.

14. A system in accordance with claim 1 , wherein at least one of:
a marginal mount region has a larger axial dimension than a marginal blade region; and
a marginal blade region and a ring forming the marginal mount region cooperate with one another such that as the blade is set onto the blade mount in the axial direction, a rotation of the blade is suppressed until the marginal blade region has passed the ring.

15. A system in accordance with claim 1 , wherein an axial spacing between a contact plane and a locking plane of the blade mount is larger in at least a release state of the blade mount than the axial thickness of a marginal blade region bounding a fastening opening.

16. A system in accordance with claim 15 , wherein the axial spacing is smaller than 1 mm, or smaller than 0.5 mm, or smaller than 0.3 mm, or smaller than 0.1 mm.

17. A system in accordance with claim 1 , wherein the entire opening edge has a uniform thickness in the axial direction.

18. A system in accordance with claim 1 , wherein one of the pins is stationary and the other one of the pins is preloaded by the spring.

Assignees

• Weber Maschb Gmbh

Inventors

• Nispel Thomas

Classifications

• B23D61/02

  Circular saw blades · CPC title

• B26D2003/286

  having a detachable blade that is removable attached to the support · CPC title

• Y10T83/9401

  Cutting edge wholly normal to axis of rotation · CPC title

• B26D7/2621

  for circular cutters · CPC title

• Y10T83/9464

  For rotary tool · CPC title