Mincing machine

An assembly method for use with a meat grinder comprising a meat grinder housing, a driveable screw conveyor (10), and a blade journal (20) mountable in a rotationally fixed manner on the screw conveyor (10) and having at least one cutting set, the meat grinder having a meat grinder housing, wherein the at least one cutting set comprises at least one perforated disc which is supportable in a stationary manner on the meat grinder housing and at least one blade which is mountable in a rotationally fixed manner on a supporting portion (23) of the blade journal (20), the blade journal having an insertion end (21), the insertion end having a cross-section, wherein the blade journal (20) is releasably holdable at one end on the screw conveyor (10), characterized in that the blade journal (20) is insertable into a bearing bore (11) of the screw conveyor (10), the bearing bore having a cross-section, wherein the cross-section of the bearing bore (11) is adapted to the cross-section of the insertion end (21) of the blade journal (20), characterized in that the insertion end (21) of the blade journal (20) protrudes from the supporting portion (23) of the blade journal (20) in a radial direction and that a stop surface is provided in a transition area (26) between the insertion end (21) and a circumferential side of the supporting portion (23), that by means of a fastening ring (30), which is pushable over the supporting portion (23) of the blade journal (20) to the stop surface (22), and can be connected to the screw conveyor (10), wherein the fastening ring (30) and the screw conveyor (10) have matching fasteners configured to engage each other, the method comprising the steps of:

• inserting the insertion end of the blade journal into the bearing bore of the screw conveyor;
• sliding a fastening ring over the supporting portion of the blade journal;
• fastening the fastening ring to the screw conveyor by means of the matching fasteners thereof, whereby a detachable connection of the blade journal (20) with the screw conveyor (10) is achieved;
• sliding the at least one perforated disc and the at least one blade onto the supporting portion of the blade journal, whereby the at least one blade is mounted in a rotationally fixed manner on the supporting portion of the blade journal;
• placing the blade journal and the screw conveyor and the fastening ring and the at least one perforated disc and the at least one blade into the meat grinder housing;
• supporting the at least one perforated disc in a stationary manner on the meat grinder housing.

A disassembly method for use with a meat grinder comprising a meat grinder housing, a driveable screw conveyor (10), and a blade journal (20) mountable in a rotationally fixed manner on the screw conveyor (10) and having at least one cutting set, the meat grinder having a meat grinder housing, wherein the at least one cutting set comprises at least one perforated disc which is supportable in a stationary manner on the meat grinder housing and at least one blade which is mountable in a rotationally fixed manner on a supporting portion (23) of the blade journal (20), the blade journal having an insertion end (21), the insertion end having a cross-section, wherein the blade journal (20) is releasably holdable at one end on the screw conveyor (10), characterized in that the blade journal (20) is insertable into a bearing bore (11) of the screw conveyor (10), the bearing bore having a cross-section, wherein the cross-section of the bearing bore (11) is adapted to the cross-section of the insertion end (21) of the blade journal (20), characterized in that the insertion end (21) of the blade journal (20) protrudes from the supporting portion (23) of the blade journal (20) in a radial direction and that a stop surface is provided in a transition area (26) between the insertion end (21) and a circumferential side of the supporting portion (23), that by means of a fastening ring (30), which is pushable over the supporting portion (23) of the blade journal (20) to the stop surface (22), and can be connected to the screw conveyor (10), wherein the fastening ring (30) and the screw conveyor (10) have matching fasteners configured to engage each other, the method comprising the steps of:

• removing the blade journal and the screw conveyor and the fastening ring and the at least one perforated disc and the at least one blade from the meat grinder housing;
• sliding the at least one perforated disc and the at least one blade off of the supporting portion of the blade journal;
• unfastening the fastening ring from the screw conveyor;
• extracting the insertion end of the blade journal from the bearing bore of the screw conveyor, whereby the blade journal (20) and the screw conveyor (10) are detached from each;
• sliding the fastening ring off of the supporting portion of the blade journal.