Apparatus for replacing rotating mandrels on which a web is wound
AssigneeMagnat Corp.
InventorWilliam R. Mengel
Life of this patent
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Abstract
Apparatus for replacing rotating mandrels on which a web is wound, featuring, in various aspects, a surface drive for accelerating new mandrels up to web speed prior to splicing combined with a center drive for rotating the mandrels, the center drive being continually engaged with the mandrels along a transfer path between splicing and main rotation stations, improved means to transfer mandrels between stations, improved splicing and web severing means, and means to load successive mandrels into the apparatus.
Claims41
Apparatus for replacing a rotating mandrel on which a web is wound in a roll, comprising
- means for supporting a first said mandrel at a main rotation station with said web wound on said mandrel and extending therefrom,
- means for supporting a second said mandrel at a splicing station spaced from said rotation station,
- center drive means extending along a rectilinear path between said stations, for rotating said mandrels,
- splicing means for severing said web and splicing it to said second mandrel, and
- transfer means for translating said second mandrel along said path after said splicing and while in driving engagement with said drive means.
Apparatus for replacing a rotating mandrel on which a web is wound in a roll, comprising
- means for supporting a first said mandrel at a main rotation station with said web wound on said mandrel and extending therefrom,
- a drive for rotating said first mandrel at said rotation station,
- means for supporting a second said mandrel at a splicing station spaced from said rotation station,
- splicing means for severing said web and splicing it to said second mandrel,
- said splicing means comprising
- a cutting edge on one side of said web and downstream of said second mandrel at said splicing station,
- an anvil on the opposite side of said web having a deflecting surface downstream of said cutting edge,
- means for moving said anvil toward said web to deflect the moving web toward said cutting edge,
- a splice roll on said opposite side of the web, said splice roll including a freely rotatable peripheral portion for supporting the moving web, and
- means to move said splice roll toward said web to nip said web against said second mandrel as said anvil deflects said web into contact with said cutting edge.
Apparatus for replacing a rotating mandrel on which a web is wound in a roll, comprising
- means for supporting a first mandrel at a main rotation station,
- a drive for rotating said first mandrel at said rotation station,
- means for supporting a second mandrel at an initial station spaced from said rotation station,
- said mandrels having end portions adapted for rolling,
- splicing means for severing said web and splicing it to said second mandrel, and
- transfer means for translating said second mandrel along a path between said stations, said transfer means comprising
- bearing surfaces for supporting said end portions of said mandrels,
- pusher shoes adapted to push against said end portions,
- means to move said pusher shoes,
- opposing guide members having inwardly-facing channels for receiving said end portions of said mandrels and guiding said pusher shoes,
- a common shaft rotatably connected to said pusher shoes,
- rack gears fixed to said guide members and uniformly spaced from said channels along the length of said channels, and
- pinion gears fixed to said common shaft and engaged with said racks, for rotating along said racks as said shoes move, to thereby maintain alignment between said shoes.
Apparatus for replacing a rotating mandrel on which a web is wound, wherein said mandrels have first portions adapted for rolling and second portions adapted for engaging a drive, said apparatus comprising
- track means adapted to support said first portions of said mandrels and defining a substantially rectilinear transfer path for said mandrels,
- transfer means for causing transfer of said mandrels along said path by rolling of said first portions thereof on said track means;
- and
- drive means for rotating said mandrels, said drive means being adapted to have operative engagement with said second portions of said mandrels while said mandrels are rolling in said track means along said path.
Apparatus for replacing a rotating mandrel on which a web is wound in a roll, comprising
- means for supporting a first said mandrel at a main rotation station with said web wound on said mandrel and extending therefrom,
- a center drive for rotating said first mandrel at said rotation station,
- means for supporting a second said mandrel at a position spaced from said rotation station,
- a surface drive for accelerating said second mandrel until its peripheral speed matches the surface speed of said web extending from said first mandrel, and
- splicing means for severing said web and splicing it to said accelerated second mandrel,
- and wherein said splicing means comprises
- a cutting edge on one side of said web and downstream of said second mandrel at said splicing station,
- an anvil on the opposite side of said web having a deflecting surface downstream of said cutting edge,
- means for moving said anvil toward said web to deflect the moving web toward said cutting edge,
- a splice roll on said opposite side of the web, said splice roll including a freely rotatable peripheral portion for supporting the moving web, and
- means to move said splice roll toward said web to nip said web against said second mandrel as said anvil deflects said web into contact with said cutting edge.
Dependencies are inferred from the claim text.