Winding – tensioning – or guiding – Safety device
Reexamination Certificate
2001-11-26
2003-07-08
Matecki, Kathy (Department: 3654)
Winding, tensioning, or guiding
Safety device
C242S534000, C242S548000
Reexamination Certificate
active
06588698
ABSTRACT:
BACKGROUND OF THE INVENTION
The invention relates to improvements in machines for winding webs of material like paper onto web reels. More particularly, the invention relates to improvements in guards for the inlet sides of nips between various rolls, drums and reels in such machines. Still more particularly, the invention relates to machines where the size of the reel being wound and forming the nip increases over time.
SUMMARY OF THE INVENTION
This invention provides a winding machine comprising a support drum, a winding tube at least partially supported on the support drum, and a web of material being wound around the winding tube to form a web reel in response to rotation of the support drum and the web reel, the point where the web reel rotates into contact with the support drum being called the nip. The winding machine further includes a nip safety guard comprising a finger presence sensor, a support mechanism supporting the finger presence sensor adjacent one of the web reel and the support drum, and a moving mechanism that moves and locates the finger presence sensor support mechanism depending on the size of the web reel So that the finger presence sensor is located closely adjacent the one of the web reel and the support drum and spaced a safe distance from the nip. The safety guard moving mechanism further includes a control for determining the size of the web reel and operating the moving mechanism to position the finger sensor. More particularly, the winding machine nip safety guard comprises a safety shield that covers the support drum and is mounted for rotation about the support drum, the safety shield having an edge adjacent the nip, and the moving mechanism moves the safety shield away from the nip during higher speed winding and towards the nip when winding at significantly lower speeds. The safe distance is one so that if a finger is sensed, the winding of the web reel can be stopped in time to prevent the finger from reaching the nip. More particularly, the safety shield has an edge adjacent the nip, and the finger presence sensor is mounted on the safety shield edge.
In the preferred embodiment, the safety shield covers the support drum, and the safety guard moving mechanism is mounted for rotation about the axis of the support drum.
The principal feature of the invention is the provision of a safety guard that moves up to the nip when the web reel is being rethreaded and positions itself so that a finger sensor is adjacent the nip to stop the winding machine if a finger is sensed near the nip.
REFERENCES:
patent: 1306711 (1919-06-01), O'Malley
patent: 1575088 (1926-03-01), Bartlett
patent: 1713382 (1929-05-01), Hammel et al.
patent: 3104845 (1963-09-01), Patterson, Jr. et al.
patent: 4295421 (1981-10-01), Abendroth et al.
patent: 4485980 (1984-12-01), Gorner
patent: 4867055 (1989-09-01), Hutter et al.
patent: 4905596 (1990-03-01), Kobler
patent: 4987277 (1991-01-01), Duhon
patent: 5024155 (1991-06-01), Jahn
patent: 5427020 (1995-06-01), Conrad et al.
patent: 5537922 (1996-07-01), Becker
Gangemi Donald
Hitchko Thomas
McKenney J. Michael
Earl Lowe, Jr. James
GL&V Management Hungary kft
Kim Sang
Matecki Kathy
LandOfFree
Winding machine including a finger sensor adjacent the nip... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Winding machine including a finger sensor adjacent the nip..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Winding machine including a finger sensor adjacent the nip... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3040895