Duplex slitter/rewinder with automatic splicing and surface/center winding
OwnerWilliam R. Myer, Alfonse V. Novelli +2inventors
InventorsWilliam R. Myer, Alfonse V. Novelli, Henk A. Van Rietschoten, Mark Van Denend
Life of this patent
Estimating the term…
Abstract
A high speed winding apparatus for winding a continuous web of material onto cylindrical cores to form winding rolls has at least one turret rotatably mounted to a frame. The web is surface wound at a predetermined surface speed on individual winding arms mounted within the turret. The winding rolls are driven through the cores and are urged against a surface winding drum turning at the web surface speed. Cores are changed automatically by cutting and splicing the web segments to a new set of cores. The completed roll is unloaded, and the turret is then rotated 180.degree. with the empty winding arms passing between the web segments.
Claims14
A high speed winding apparatus for the continuous rewinding of various independent widths of web material onto sized web cores, and for automatically changing wound web cores with empty web cores without interrupting said continuous rewinding, comprising:
- (a) a frame;
- (b) a turret means rotatably mounted in said frame for rotation about a turret means axis;
- (c) winding drum means including a first winding drum and a second winding drum rotatably mounted in said turret means in generally opposing locations offset from said turret means axis;
- (d) first and second winding roll support arm means having, proximal ends pivotally mounted on said turret means in opposing locations offset from said turret means axis outboard of said winding drum means, and distal ends for supporting respective first and second sized web cores for rewinding said independent widths of web material thereon;
- and
- (e) said support arm means being indexable between a winding position wherein said sized web cores receiving the independent widths of said web material are disposed to bring the respective widths of said web material into generally continuous rolling contact with an associated one of said winding drum means for surface winding of said independent widths of said web material to provide uniformly wound web material on each of the respective wound web cores and an unloading/loading position wherein wound web cores are remote from said winding drum means when the turret means is rotated for initially repositioning an empty web core on at least one of the respective first and second support arm means for the continuous winding of additional independent widths of the web material.
A high speed slitter/rewinder apparatus for slitting a web of material into a plurality of predetermined widths and for the continuous rewinding of the plurality of widths onto a plurality of sized web cores and for automatically changing wound web cores with empty web cores without interrupting the continuous rewinding, comprising:
- (a) a frame;
- (b) slitter means associated with said apparatus and frame for longitudinally slitting the web material into the plurality of predetermined widths;
- (c) turret means rotatably mounted in said frame for rotation about a turret means axis;
- (d) winding drum means including a first winding drum and a second winding drum rotatably mounted in said turret means in generally opposing locations offset from said turret means axis;
- (e) first and second winding roll support arm means having, proximal ends pivotally mounted in said turret means in opposing locations offset from said turret means axis outboard of said winding drum means, and distal ends for supporting respective first and second sized web cores for rewinding respective predetermined widths of said web material on associated web cores;
- (f) said support arm means being indexable between a winding position wherein said sized web cores receiving the associated predetermined widths of said web material are disposed to bring the web material into generally continuous rolling contact with an associated one of said winding drum means for surface winding of said predetermined widths of web material on an associated web core and an unloading/loading position wherein wound web cores are remote from said winding drum means when the turret means is rotated for initially repositioning an empty web core on at least one of the respective first and second support arm means for the continuous rewinding of a predetermined width of said web material;
- (g) means operatively associated with said first and second support arm means for exerting a predetermined force on the associated rewinding web cores with the widths of web material being wound thereon during rolling engagement with an associated winding drum means for generally uniform rewinding of said widths of web material on said web cores;
- and
- (h) said first and second support arms means including, chucking means for holding sized web cores therein, and independent driving and control means for driving the chucking means at a speed approximately equal to the surface speed of the web material wound on the web core held by the chuck to substantially eliminate torque transfer through the web core whereby the coaction between the surface winding by the winding drum means and the speed of the web core enables the winding pressure to be varied from the inside to the outside layers of the predetermined widths of web material being wound on a given one of the said web cores.
Dependencies are inferred from the claim text.