Device for joining together in a registered and/or abutting manner the ends of two paper or cardboard webs which unwind from two different wheels positioned on a reel star unit of two or more positions
AssigneeIMS Limited
InventorPiero Barzano'
Life of this patent
Estimating the term…
Abstract
A device for joining together in a registered and/or abutting manner the ends of two paper or cardboard webs which unwind from two different reels (17, 19) positioned on a reel star unit (10), comprised of a presser roller splicer (36), a cutting unit (38) for cutting the web to size and at least one photoelectric reader (30) which controls the stoppage of the web from the spent reel when in proper position for joining, its joining to the new web, and the cutting to size of the last end of said spent web.
Claims4
A device for joining together in a registered relationship a tail end of a first web unwound from a first reel with a lead end of a second web of a second reel, comprising:
- a star reel unit having a pair of arms rotatably supporting said first reel and another pair of arms rotatably supporting said second reel;
- means for rotating said star reel unit for positioning said second reel in place of said first reel when said first reel is near to expire but continues to have the first web unwound therefrom;
- means for cutting said first web to provide said tail end of said first web and for splicing said tail end of said first web to said lead end of said second web comprising, cutting and splicing support arms pivotally mounted on a machine frame, means to pivotally move said cutting and splicing support arms between an inoperative position and an operative position when said first web is slowing down, a movable cutting blade mounted on said cutting and splicing support arms, a bracket pivotally mounted on said star reel unit, a counterblade mounted on said bracket for cooperating with said cutting blade when in said operative position to cut said first web, a splicing roller rotatably supported on said cutting and splicing support arms, and means operatively associated with said cutting blade and roller to actuate said cutting blade and roller to produce the cutting and splicing when said cutting and splicing support arms are in the operative position and said first web is stopped;
- means for rotating said second reel;
- a first photoelectric means on said star reel unit for controlling said means for rotating said second reel for positioning said second reel in a predetermined stationary angular position in which said lead end faces said first web;
- and
- second photoelectric means responsive to register marks on said first web for controlling slowing down and momentarily stopping of said first web in a position in which said tail end of said first web is in registered joining relationship with said stationary angularly positioned lead end of said second web and for substantially simultaneously actuating said cutting and splicing means and restarting movement of said joined webs.
A device for joining together in a registered relationship a tail end of a first web unwound from a first reel with a lead end of a second web of a second reel, comprising:
- a star reel unit having a pair of arms rotatably supporting said first reel and another pair of arms rotatably supporting said second reel;
- means for rotating said star reel unit for positioning said second reel in place of said first reel when said first reel is near to expire but continues to have the first web unwound therefrom;
- means for cutting said first web to provide said tail end of said first web;
- means for splicing said tail end of said first web to said lead end of said second web;
- means for rotating said second reel;
- a first photoelectric means on said star reel unit for controlling said means for rotating said second reel for positioning said second reel in a predetermined stationary angular position in which said lead end faces said first web;
- and
- second photoelectric means responsive to register marks on said first web for controlling slowing down and momentarily stopping of said first web in a position in which said tail end of said first web is in registered joining relationship with said stationary angularly positioned lead end of said second web and for substantially simultaneously actuating said cutting and splicing means and restarting movement of said joined webs;
- an additional pair of arms on said star reel unit;
- and
- a bracket movably mounted on each additional arm for movement between an inoperative position and an operative position;
- said first photoelectric means being mounted on said brackets on said additional arms.
Dependencies are inferred from the claim text.