Method and apparatus in unwinding
First Claim
1. A method in splicing in a continuous unwind, in which method the surface speed of a new machine reel (R2) which is brought to the unwind and closed with a leading splice is accelerated in the initial acceleration to make its speed correspond to the speed of an old machine reel (R1) that is becoming empty, so that the fastening splice of the new machine reel can be joined to the web of the old machine reel, characterized in that the loading affecting a leading splice and/or fastening splice of the new machine reel (R2) during the initial acceleration is reduced by using active and/or passive actuators.
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Accused Products
Abstract
In the method in splicing in a continuous unwind, the surface speed of a new machine reel (R2) which is brought to the unwind and closed with a leading splice is accelerated in the initial acceleration to make the speed correspond to the speed of the old machine reel (R1) that is becoming empty, so that the fastening splice of the new machine reel can be joined to the web of the old machine reel. The loading affecting the leading splice and/or fastening splice of the new machine reel (R2) during the initial acceleration is reduced. The present invention also relates to an apparatus for implementing the method.
15 Citations
27 Claims
- 1. A method in splicing in a continuous unwind, in which method the surface speed of a new machine reel (R2) which is brought to the unwind and closed with a leading splice is accelerated in the initial acceleration to make its speed correspond to the speed of an old machine reel (R1) that is becoming empty, so that the fastening splice of the new machine reel can be joined to the web of the old machine reel, characterized in that the loading affecting a leading splice and/or fastening splice of the new machine reel (R2) during the initial acceleration is reduced by using active and/or passive actuators.
- 14. An apparatus in connection with splicing of a web (W) coming from an old machine reel (R1) and a web of a new machine reel (R2), in which splicing said webs are arranged to be connected to each other by means of a fastening splice, characterized in that the apparatus comprises means for reducing the loading applied to the leading splice and/or fastening splice of the new machine reel (R2).
Specification