Method and apparatus for cutting continuous corrugated members
AssigneeNippondenso Co., Ltd.
InventorsTakatoshi Iwase, Kazunari Fuma, Akira Nakagawa, Kouhei Hakamada
Life of this patent
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Abstract
Cutting of a corrugated fin into predetermined lengths for a radiator in a vehicle. The phase mating is, when the cutter is moved in the direction opposite to the corrugated member, effected at the correcting point where the torque in the cutter is the same as the torque at a cutting point where the corrugated member is moved synchronizingly with the cutter. Thus, automatic phase mating is effected, thereby causing the fin to be cut precisely at a trough of the fin.
Claims22
A method of forming corrugated members comprising the steps of:
- delivering a continuous strip of material in a straight line while forming the strip into a corrugated configuration having a plurality of crests and troughs;
- moving a cutting assembly in a reciprocating path along said straight line;
- aligning the cutter assembly with a trough of the formed corrugated member at a point along the path of the cutter where the speed of the cutter is equal to the speed of the corrugated member while the cutter is moving in a direction opposite the corrugated member;
- actuating the cutter while moving in the same direction as the corrugated member at the same point on the cutter path as the aligning point so as to cut the corrugated member at the trough.
An apparatus for cutting continuous corrugated members, which comprises rollers for molding a continuous corrugated member from a strip member, a tooth chain to be engaged with the continuous corrugated member from the molding rollers, means meshing with the chain to deliver the continuous corrugated member in a straight line, a cutter reciprocating along the tooth chain, pulse signal generating means for generating electric pulse signals responsive to the detection of crests and/or troughs of the delivered continuous member, a pulse motor driven by said pulse signals, a hydraulic motor driven by the pulse motor, means for horizontally and reciprocating the cutter by converting the rotary movement from the hydraulic motor to a horizontal and reciprocating movement of the cutter, means for vertically and reciprocating the cutter by converting the rotary movement from the hydraulic motor to a vertical and reciprocating movement of the cutter, a sensor disposed to detect, when the cutter is moved in the direction opposite to the moving direction of the corrugated member, a correcting point where the load in the cutter is same as the load at a cutting point where the cutter is synchronously moved with the corrugated member, and control means responsive to the signal from the sensor and from the pulse signal generating means for control of the supply of pulses from the pulse signal generating means to the pulse motor so that the cutter is aligned with the trough of the continuous member at the correcting point.
Dependencies are inferred from the claim text.