Method for splicing trailing and leading ends of sheets

Details Method for splicing trailing and leading ends of sheets Method for splicing trailing and leading ends of sheets

1989-10-17

1991-09-03

Simmons, David A.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156157, 156350, 156351, 156361, 156502, 156504, 226 11, 226 24, 226 43, 226119, 226122, B65H 1900, B32B 3100

Patent

active

050451340

ABSTRACT:
A splicing apparatus for joining a trailing end of a first sheet to a leading end of a second sheet comprises a first servomechanism including a first drive for engaging and advancing the first sheet in a direction of advance; a second servomechanism including a second drive for engaging the first sheet upstream of the first drive; a splicing device for joining the trailing and leading ends to one another upstream of the second drive; a sensor for generating a signal when the trailing end of the first sheet passes a predetermined location upstream of the splicing device; and a computer connected to the first and second servomechanisms, the splicing device and the sensor for reducing the speed of the advancing first sheet and for subsequently effecting a joining operation of the splicing device upon receiving the signal from the sensor; and a sheet length compensating device engaging the first sheet at a location between the first and second drive for reducing or increasing the length of the first sheet between the first and second drive upon variations of speed between the first and second drive.

REFERENCES:
patent: 3727820 (1973-04-01), Braun
patent: 3865296 (1975-02-01), Alverson
patent: 4060186 (1977-11-01), Nabhan
patent: 4100012 (1978-07-01), Meihofer et al.
patent: 4131501 (1978-12-01), Bottcher et al.
patent: 4771621 (1988-09-01), Sato
patent: 4785902 (1974-01-01), Preston et al.

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