Control for an automatic slicing machine
AssigneeAMCA International Group
InventorsGary L. Wallace, Robert K. Moore
Life of this patent
Estimating the term…
Abstract
An automatic slicing machine includes a dynamic weigher for weighing slices in a draft as they are being cut. Information from the weigher is converted into a digital value and is used to control the thickness of subsequently cut slices to produce drafts at a target weight. After the cutting of a draft is completed, its weight is checked in a check weigher. The check weigher communicates the weights of individual drafts back to a programmable controller in the slicer. The controller computes a new target weight to correct any deviation of the final weight from the set point for weight control. This automatically calculated correction eliminates manual adjustment by the machine operator and assures that subsequent drafts have an acceptable weight.
Claims10
A method for controlling the slicing of a product, comprising the steps of:
- cutting slices of the product;
- dynamically weighing the slices as they are being cut;
- calculating a desired thickness for slices in accordance with the dynamically measured weight and a target weight;
- controlling the thickness of slices in accordance with the calculated thickness;
- grouping a number of consecutive slices into a draft;
- weighing the draft;
- averaging the weights of a predetermined number of drafts;
- determining the difference between the average weight and said target weight;
- and
- adjusting said target weight by an amount proportional to said difference.
Apparatus for controlling the thickness of slices cut in a slicing machine of the type in which a product is advanced into a continuously rotating cutting blade, comprising:
- means for grouping slices of the product into drafts;
- first means for providing an indication of the dynamic weight of the slices in a draft whose slices are currently being cut;
- means for manually setting a target value for the weight of each draft;
- means responsive to said target value and said dynamic weight for controlling the rate at which the product is advanced into the cutting blade;
- second means for measuring the total weight of a draft after all of its slices have been cut;
- and
- means responsive to the weight measured by said second means for adjusting said target value,
- wherein said adjusting means averages the weights of a predetermined number of consecutive drafts, determines the difference between the average weight and said target weight, and adjusts said target weight by the amount proportional to said difference.
A method for controlling the slicing of a product, comprising the steps of:
- cutting slices of the product;
- dynamically weighing the slices as they are being cut;
- calculating a desired thickness for slices in accordance with the dynamically measured weight and a target weight;
- controlling the thickness of slices in accordance with the calculated thickness;
- grouping a number of consecutive slices into a draft;
- weighing the draft;
- classifying the draft weight into one of a plurality of weight zones disposed about the target weight;
- determining the number of drafts in the zones about the target weight;
- and
- adjusting said target weight when the number of drafts in at least one of said zones is outside a threshold range.
Dependencies are inferred from the claim text.