Sheet feeding or delivering – Feeding – By means to convey sheet
Patent
1985-03-15
1988-01-05
Butler, Douglas C.
Sheet feeding or delivering
Feeding
By means to convey sheet
271 3, 1984633, 414331, 26 52, B65H 512
Patent
active
047171430
ABSTRACT:
Pieces of flat sheet material, such as films of synthetics or cloth, are fed by a transport apparatus in a stretched out condition into a processing station, for example a molding and laminating station or a treatment station. The transport apparatus uses either tentering type frames or a conveyer with tentering chains. A piece of flat sheet material is attached to a tentering frame or to the tentering chains by a respective apparatus. The tentering frames are moved vertically in a determined order between a lower position, an intermediate position, an upper position and a delivering position located in the processing station horizontally at the same level as one of the three other positions, whereby a tentering frame carrying a piece is moved into the processing station for delivering the piece of sheet material and back again for exchange with a tentering frame carrying another piece of sheet material. The tentering chain type conveyer receives flat material from a supply roller, whereby pieces are cut, attached to the tentering chains and moved into the delivering position in a piece by piece intermittent fashion. Both, the tentering frame and the tentering conveyer use elongated clamps capable of exerting a uniform clamping pressure along the entire length of the respective clamp.
REFERENCES:
patent: 4405537 (1983-09-01), Spengler
patent: 4457662 (1984-07-01), Ireland et al.
patent: 4520726 (1985-07-01), Rouly et al.
Butler Douglas C.
Fasse W. G.
Graham Matthew C.
Kane, Jr. D. H.
Stanztechnik GmbH R+S
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