Manufacturing container or tube from paper; or other manufacturi – Control means energized in response to activator stimulated... – Responsive to work material – the product or means engaging...
Patent
1992-01-21
1992-08-25
Kisliuk, Bruce M.
Manufacturing container or tube from paper; or other manufacturi
Control means energized in response to activator stimulated...
Responsive to work material, the product or means engaging...
162270, 162271, 493459, B31F 700
Patent
active
051414848
ABSTRACT:
The apparatus for straightening sheet curls of the present invention is operating in the following processes 1 and 2 when splicing the sheets from the parent rolls:
1 The wrap angle adjusting apparatus starts to return one of the main backup rolls and the decurler bar from the position corresponding to the small parent roll to the position corresponding to the large parent roll.
2 The apparatus for suddenly changing the wrap angle causes the other of the main backup rolls and the decurler bar to retract from the standard position at which the sheet is pushed inwardly to a position at which the sheet is not pushed inwardly or moderately so as to suddenly change the wrap angle of the sheet substantially at the same timing as the start of return above described in process 1. During this operation, the sheet is guided by the secondary backup rolls, and the wrap angle of the sheet is set to a value appropriate to the diameter of the second parent roll having a large diameter. As a result, the curls in the sheet wound off from the second parent roll having a large diameter are appropriately straightened (refer to FIG. 4(B)).
REFERENCES:
patent: 2658432 (1953-11-01), Baumgartner
patent: 2918897 (1959-12-01), Zernov
patent: 3546067 (1970-12-01), Heidepriem
patent: 3661703 (1972-05-01), Shelor
patent: 3779138 (1973-12-01), Lindstaedt
Kisliuk Bruce M.
Kobayashi Engineering Works Ltd.
Lavinder Jack
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