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US 4,731,047 AGranted
Apparatus for making filter frames
AssigneeA. G. Custom Machine Co. Inc.
InventorDavid R. Lobb
Life of this patent
Estimating the term…
Abstract
An apparatus for the production of frames for filters from a continuing reel of framestock, each frame having a given length and width determined by a preset cutting and corner notching function and each frame having a prefolded cross section or a pinched cross section, said frames made to accommodate filter material of the type normally used to filter air.
Claims7
An apparatus for the formation of rectangular frames for filters from a reel of framestock wherein sections of framestock are cut, notched and fed through the apparatus without stopping comprising:
- a. an elongated frame;
- b. a pair of opposing infeed rollers mounted rotationally on said frame which advance a continuous strip of framestock into the apparatus
- c. a series of guide rails mounted lengthwise on said frame to maintain a proper position of the framestock;
- d. a pair of engageable opposing pinch-score rollers slidingly mounted to the frame downstream to said infeed rollers through which the framestock passes which pinch and score the framestock when engaged;
- e. means for adjusting the location of the pinch-score rollers relative to the width of the framestock, said means mounted on the frame and connected to the pinch-score rollers;
- f. first means for cutting the framestock to a predetermined length, said means mounted downstream to the pinch-score rollers;
- g. second means for cutting three notches in the framestock at predetermined positions along the length of the framestock, said means mounted downstream to first cutting means;
- h. a second set of rotationally mounted opposing outlet rollers mounted on said frame downstream to second cutting means through which the framestock passes and is pre-folded;
- i. a third set of rotationally mounted opposing fold rollers mounted on the frame downstream to cutting means through which the pre-folded framestock passes;
- j. means for adjusting the position of the second fold rollers relative to the width of the framestock;
- k. a discharge surface mounted to the frame on the end opposite the feeding means onto which the framestock, notched, folded and cut to length is discharged;
- l. means for supplying power to the apparatus mounted on a said frame;
- and
- m. means for controlling the operation of cutting means g and f to set the position of the respective notches along the length of framestock and to set the length of each frame, respectively.
11 more elements
Dependencies are inferred from the claim text.