US 5,314,132 A · Method for changing spools and apparatus therefor

Abstract

A method for changing spools in which a sheet continuously supplied to a reel drum is wound onto a new spool, comprising the steps of bringing the new spool held on an arm at a waiting position into contact with the reel drum; cutting the center part of the sheet with two cutting devices along two approximately parallel cutting lines in the running direction of the sheet at a location on the reel drum upstream in the running direction of the sheet; supplying an adhesive to an area between the cutting lines and letting the adhesive adhere onto a surface of the new spool; and moving said two cutting devices toward the two respective edges of the sheet so as to cut the sheet into a triangular shape. An apparatus for changing spools is equipped with a holder for holding the new spool at a waiting position and bringing the new spool into contact with the reel drum when a new spool replaces the old one; two cutting devices installed so as to be able to contact with and move away from the sheet and to move from the central part of the sheet to the respective side edges at an upstream position in the direction of the sheet movement on the reel drum; and a supplier for supplying an adhesive material onto the sheet surface installed between the cutting devices and the reel drum.

Claims9

Dependent claims

A method for changing spools in which a sheet continuously supplied to a reel drum is wound onto a new spool, comprising the steps of:

bringing the new spool from a waiting position into contact with the reel drum at the time for replacing the spool, said drum having an upstream side forward of the point of contact with said spool and a downstream side past the point of contact with said spool;
cutting the center part of said sheet with two cutting devices along two approximately parallel cut lines to form a leading ribbon on the upstream side of said reel drum in the direction of sheet movement;
moving said cutting devices after forming said leading ribbon to the respective side edges of said sheet to cut said sheet along oblique lines on the upstream side of said reel drum in the direction of sheet movement;
applying a two-sided adhesive label to said leading ribbon on the upstream side of said reel drum whereby said label engages with said new spool upon movement of said sheet and becomes sandwiched between said ribbon and said spool for lifting and adhering said ribbon to said spool;
and
cutting the lifted part of said leading ribbon by an independent cutting device at a location slightly downstream from the point where said new spool comes into contact with said sheet on the downstream side of said reel drum.

3 more elements

An apparatus for changing spools in which a sheet continuously supplied to a reel drum is wound onto a new spool, said apparatus comprising:

holding and positioning means for holding the new spool at a waiting position and for bringing said new spool into contact with said reel drum when spools are replaced, said drum having an upstream side forward of the point of contact which said spool and a downstream side past the point of contact with said spool;
cutting means including a pair of support frames each having a cutting blade supported for movement thereon to define a pair of such blades disposed for movement to engage with said sheet to form a leading ribbon on the upstream side of said reel drum in the direction of sheet movement;
said cutting means, after forming said leading ribbon, effecting movement of said pair of cutting blades to the respective side edges of said sheet;
label means for applying a two-sided adhesive label to said leading ribbon on the upstream side of said reel drum, said label being disposed to engage with said new spool upon movement of said sheet and become sandwiched between said ribbon and said spool for lifting and adhering said ribbon onto said spool;
and
jet cutting means disposed for movement between a standby position and an operate position, said cutting means in its operate position being disposed to direct a fluid medium jet on a lifted part of said leading ribbon at a location slightly downstream from the point where said new spool comes into contact with said reel drum for severing said ribbon from said sheet on the downstream side of said drum.

3 more elements

Dependencies are inferred from the claim text.

Method for changing spools and apparatus therefor

Life of this patent

Method for changing spools and apparatus therefor

Life of this patent

Abstract

Claims9