Advancing material of indeterminate length – With material-responsive control means – To regulate longitudinal movement of material
Patent
1985-10-07
1990-08-21
Hornsby, Harvey C.
Advancing material of indeterminate length
With material-responsive control means
To regulate longitudinal movement of material
226187, 226188, B65H 2002, B65H 23188
Patent
active
049498916
ABSTRACT:
An apparatus for selectively feeding tape having label patterns printed on it at one of two different speeds to maintain alignment of the label patterns with a downstream device such as a cutter for severing the tape between label patterns. Marks on the tape associated with the individual label patterns are monitored by a sensor to detect misalignment of the tape. The tape is fed between a driven feed drum and a spring biased pressure drum. The feed drum is mounted on a main shaft. A drive shaft extends parallel to the main shaft. A pair of gears are mounted on each of the shafts and each gear meshes with one of the gears on the other shaft to form two separate power transmission paths. The sizes of the gears are selected so that the gear ratios of the two power transmission paths are different. The gears on the main shaft are selectively fixed to the main shaft for rotation with it by electromagnetic clutches controlled by the sensor. The speed of the main shaft, the feed drum, and, thus, the tape is varied between the two speeds in response to the sensor output by disengagement of one of the clutches and engagement of the other.
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Haugland Scott J.
Hornsby Harvey C.
Koyou Jidouki Co., Ltd.
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