초록 ▼

Apparatus for applying leading tips to a continuous sheet material and then cutting the same comprises a rotatable cut drum, a cutting knife contained in the cut drum and adapted to be caused to project outwardly through the surface of said cut drum at a fixed position while said knife is rotating t

Apparatus for applying leading tips to a continuous sheet material and then cutting the same comprises a rotatable cut drum, a cutting knife contained in the cut drum and adapted to be caused to project outwardly through the surface of said cut drum at a fixed position while said knife is rotating together with the cut drum, a cam mechanism secured to a stationary member outside the cut drum for actuating said cutting knife, a single position clutch adapted to be rotated in synchronism with the cut drum, a mechanism adapted to be driven through said single position clutch for applying leading tips to the continuous sheet material, the arrangement being such that the continuous sheet material is fed along said leading tip applying mechanism and the outer periphery of the cut drum as the cut drum is rotated and that said single position clutch is energized into its connectible condition at predetermined time during the operation, while said cam mechanism is switched to a cammable condition in which it is able to perform its camming action during not more than one complete revolution of cut drum when the continuous sheet material is further transferred a fixed length from the time of application of the leading tip, so that the knife within the cut drum is actuated to cut the sheet material which is running along with the rotation of the cut drum.

대표청구항 ▼

An apparatus for applying leading tips to, slitting into strips, and cutting a continuous sheet of material, comprising: means for continuously feeding said continuous sheet in the direction of its length at a constant speed, from a sheet material supplying position, through a leading tip applying p

An apparatus for applying leading tips to, slitting into strips, and cutting a continuous sheet of material, comprising: means for continuously feeding said continuous sheet in the direction of its length at a constant speed, from a sheet material supplying position, through a leading tip applying position, a sheet slitting position and a slitted strip cutting position, to a slitted strip rewinding position, said sheet slitting position being between said leading tip applying position and said slitted strip cutting position; tip applying means for intermittently applying and adhering leading tips to said continuous sheet of material substantially over the entire width of said continuous sheet at said leading tip applying position; slitting means for slitting said continuous sheet with said leading tips adhered thereon into a plurality of slitted strips, at said sheet slitting position; a rotatable cut drum along a part of which said slitted strips are fed, said cut drum being situated at said sheet material cutting position and having cutting means slidably mounted therein, said cutting means including a knife edge movable between a first position at which said knife edge extends beyond the periphery of said cut drum and a second position at which said knife edge is retracted within the periphery of said cut drum; cam means for actuating said cutting means between said two positions at a predetermined rotary position of said cut drum within the angle range during which said slitted strips are in contact with the periphery of said cut drum, said cam means being movable between an operative position at which said cam means is engageable with said cutting means to move said cutting means to said first position and a non-operative position at which said cam means is disengaged from said cutting means to maintain said cutting means in said second position; means for switching said cam means between said operative position and said non-operative position; drive means for continuously rotating said cut drum; a single position clutch including a driver and a follower which are engageable with each other when they are in a predetermined relative rotating phase; means for operably connecting said driver of said single position clutch to said cut drum; means for operably connecting said follower of said single position clutch to said tip applying means; signal generating means for coupling said follower and said driver of said single position clutch to drive said tip applying means when a leading tip is to be applied to said continuous sheet of material; and timing means for retaining said cam means at its non-operative position fOr a time interval after the application of each of said leading tips, during which a predetermined length of said sheet material is fed over said cut drum and for actuating said cam means to the operative position at the end of said time interval such that said sheet is cut by said cutting means substantially adjacent each of said heating tips along its rear edge.