Apparatus for cutting ductile materials and a method of operating the apparatus
AssigneeBuss AG
InventorAndreas Rieck
Life of this patent
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Abstract
A cutting apparatus for ductile materials comprises a nozzle having a number of outlet openings separated from each other by separator webs. Next to the nozzle, a rotating cutting tool is provided, having a plurality of cutting knives for cutting off the strands of material discharged through the outlet openings of the nozzle. Each separator web is at least as wide as a cutting knife. For performing a cutting operation, the cutting tool is intermittently rotated. Between two cutting operations, the cutting tool is stopped, whereby its knives remain in a rest position behind the separator webs. For the next cutting operation, the cutting tool is rotated by such an amount that its cutting knives move from a position behind a first separator web to the next adjacent separator web.
Claims6
An apparatus for cutting ductile materials discharged from an outlet of a processing machine, said cutting apparatus comprising:
- a nozzle connectable to the outlet of the processing machine and having a plurality of outlet openings separated from each other by separator webs, each separator web having a first width;
- a cutting tool adapted to be driven to a rotational movement and having a plurality of cutting knives for cutting off material strands discharged through said outlet openings of said nozzle, each cutting knife having a second width;
- and
- drive means adapted to drive said cutting tool to an intermittent rotational movement in which the cutting knives are stopped for a predetermined period of time during a complete revolution before moving each of said cutting knives from a first position behind a first of said separator webs to a second position behind a second, adjacent separator web;
- said first width of said separator webs being at least equal to said second width of said cutting knives;
- and
- said drive means including a programmable motor/stepping gear box combination configured to permit adjustment of said predetermined time period between two intermittent rotational movements of the cutting tool and/or the cutting speed independent of the discharge rate of the material strands discharged through said outlet openings.
Dependencies are inferred from the claim text.