Method of and means for controlling internal tension in web rolls

Claim 3

A method according to claim 1, comprising inserting shaft adapter means into end portions of the web roll cores, and applying the load relieving lift to said shaft adapters.

Claim 4

A method according to claim 1, comprising proportionately increasing load relieving lift force relative to progressively increasing weight of the web rolls.

Claim 5

A method according to claim 1, including at full diameter of the web rolls terminating said load relieving lift and ejecting the web rolls from said drums.

Claim 6

A method according to claim 1, comprising initially laying web roll cores into a trough provided by the winding drums, starting web material onto the cores while the rider roll applies tensioning load to the cores and started web material toward the nips at the winding drums, and after the web rolls have reached said self-loading weight applying lifting devices to core shaft means carried by the cores in thereby applying the load relieving lift to the cores.

Claim 7

Apparatus for controlling internal lineal tensioning in web rolls during winding thereof about cores, comprising: winding drums on which the web rolls are in nip engagement; a rider roll which imposes lineal web tensioning load on the web rolls toward said nips until the web rolls are partially wound and the weight of the web rolls themselves provide self-loading of the nips to maintain the lineal tension; means for releasing the rider roll from the web rolls when the web rolls have attained self-loading weight; and means operating during continuance of the winding of the web rolls on the drums for applying load relieving lift to the web rolls through their cores to maintain the web tensioning load at said nips at a substantially optimum value until the web rolls have attained full sized diameter and weight.

Claim 8

Apparatus for controlling internal lineal tensioning in web rolls during winding thereof about cores, comprising: winding drums on which the web rolls are in nip engagement; a rider roll which imposes lineal web tensioning load on the web rolls toward said nips until the web rolls are partially wound and the weight of the web rolls themselves provide self-loading of the nips to maintain the lineal tension; means for releasing the rider roll from the web rolls when the web rolls have attained self-loading weight; and means operating during continuance of the winding of the web rolls on the drums for applying load relieving lift to the web rolls through their cores to maintain the web tensioning load at said nips at a substantially optimum value until the web rolls have attained full sized diameter and weight.

Claim 9

Apparatus according to claim 6, including shaft adapter means to be inserted into end portions of the web roll cores, said relieving means being applied to said shift adapter means to effect the load relieving lift.

Claim 10

Apparatus according to claim 6, including means operating with said load relieving lift applying means to proportionately increase the lifting force relative to progressively increasing weight of the web rolls during winding.

Claim 11

Apparatus according to claim 6, wherein said load relieving lift applying means are arranged to terminate load relieving lift when the web rolls have attained full diameter, and means for ejecting the full diameter web rolls from said drums.

Claim 12

Apparatus according to claim 6, comprising core shaft means connecting the cores so that the cores can be initially laid into a trough provided by the winding drums and the web material started onto the cores while the rider roll applies tensioning load to the cores and the started web material toward the nips at the winding drums, and said load relieving lift applying means being operable from an inactive position to engage said core shaft means after the web rolls have reached a self-loading weight for thereafter applying load relieving lift to the cores through said shaft means.

Claim 13

Apparatus according to claim 6, wherein said lifting means comprise a generally vertically swinging device including a lifting arm, means for supporting the arm, and means for operating said device.

Claim 14

Apparatus according to claim 11, wherein said operating means comprise means for actuating the device in a vertical direction.

Claim 15

Apparatus according to claim 11, wherein said operating means include means for swinging the device relative to said web rolls.

Claim 16

Apparatus according to claim 11, including adapter shaft means for engagement in the end portions of the web roll cores and having engagement areas thereof exposed at the ends of the cores, and said lifting arm having a hook terminal portion engageable selectively in lifting relation with the engagement area of one of the adapter shaft areas.

Claim 17

Apparatus according to claim 11, including means for effecting adjustments of the lifting device along the supporting means to accommodate variable lengths of web rolls.

Claim 18

A winder apparatus for simultaneously winding a slit web onto a plurality of adjacent rolls on a common axis comprising in combination: axially extending shaft means for core means for receiving a plurality of webs and winding them onto a plurality of rolls; and support means engageable with the shaft means between adjacent rolls for applying a vertical force thereto preventing downward deflection of the shaft means and preventing interference between adjacent rolls due to downward deflection of the axis.

Claim 19

A winder apparatus for simultaneously winding a slit web onto a plurality of adjacent rolls on a common axis comprising in combination: axially extending shaft means for core means for receiving a plurality of webs and winding them onto a plurality of rolls; and support means engageable with the shaft means between adjacent rolls for applying a vertical force thereto preventing downward deflection of the shaft means and preventing interference between adjacent rolls due to downward deflection of the axis.

Claim 20

A winder apparatus for simultaneously winding a slit web onto a plurality of adjacent rolls on a common axis constructed in accordance with claim 16, wherein said support means includes means extending diametrically inwardly from externally of the rolls and between the ends of the rolls for engagement with the shaft means.

Claim 21

A winder apparatus for simultaneously winding a slit web onto a plurality of adjacent rolls on a common axis constructed in accordance with claim 16, and including a vertical force applying means connected to said support means operative to apply a variable force increasing with the diameter and weight of the roll.

Claim 24

The method of winding a slit web into a plurality of adjacent rolls on a common axis in accordance with the steps of claim 19, wherein the force applied increases proportionately to the size and weight of the rolls.