Cutting – Processes – Plural cutting steps
Patent
1989-05-26
1991-07-09
Phan, Hien H.
Cutting
Processes
Plural cutting steps
83 52, 83 56, 83 72, 83555, 83578, 83614, 834861, 364473, B26D 118, B26D 500
Patent
active
050295020
ABSTRACT:
The present invention is drawn to a method an an apparatus for cutting a sheet member embedded with wires for use in tire, having the following characteristics. That is, a wire-embedded member is cut with a rotatable cutter at the middle of the member in a width-wise direction thereof while applying a pushing force, effected by a high pressure, on the cutter. The cutter is shiftably and rotatably mounted on a frame so as to be movable in a shifting direction while rotating. The cutter movement may also deviate in a direction orthogonal to the shifting direction thereof. The completion of the cutting at the middle of the member is detected by an electrical connection between the cutter and a support member, which connection is confirmed by a confirmation control mechanism. The cutter is shifted by a pushing mechanism from the middle to one side edge of the sheet member under a pushing force, effected by a pressure lower than that of the high pressure, so as to carry out a first half of a cutting operation. The cutter is then returned to the middle under a force effected by pressure even lower than that effecting the pushing force. The cutter is shifted again from the middle to the other side edge of the sheet member under a pushing force effected by a pressure equal to that generated during the first half of the cutting operation so as to carry out a second half of the cutting operation. The cutter is then raised after the completion of the cutting operation and is returned to the middle in preparation for the next operation. The pushing and the shifting of the cutter is controlled by a suitable control device.
REFERENCES:
patent: 3732767 (1973-05-01), Habert
patent: 4608890 (1986-09-01), Still et al.
patent: 4857123 (1989-08-01), Still et al.
patent: 4858505 (1989-08-01), Still et al.
patent: 4913018 (1990-04-01), Bailey
Mitsubishi Jukogyo Kabushiki Kaisha
Phan Hien H.
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