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US 4,173,314 AGranted
Continuous web supply apparatus
AssigneeCary Metal Products, Inc.
InventorsThomas F. Curran, Leonard I. Tafel, Caspar F. Engert, Robert E. LaBarre
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AssigneeCary Metal Products, Inc.
InventorsThomas F. Curran, Leonard I. Tafel, Caspar F. Engert, Robert E. LaBarre
Estimating the term…
An apparatus for providing a continuous supply of web material to a web printer or other system. The web material is fed from a first roll supported in a feed position, and when the first roll is near depletion, the leading end of a second roll is adhesively connected to the web of the first roll with that web then being severed. One belt drive means is employed for rotating both the forward and rearward rolls so that these achieve the same speed for the connecting and severing operations. The belt drive means are connected to the press drive through control means which vary the belt drive speed in accordance with the tension of the web. An indexing conveyor supports forward and rearward rolls to locate the rolls in the forward and rearward running positions and in intermediate positions for connecting and severing of the web material and for loading of new rolls into the system.
In an apparatus for providing a continuous supply of a web wherein the web is fed from a roll supported in a forward position on a roll stand, another roll of web material supported in a rearward position on the roll stand, and means actuatable in response to near depletion of the forward roll for adhesively connecting a leading end portion of the web of the rearward roll with the web of the forward roll and for thereafter severing the engaged portion of the forward roll from the remainder of the forward roll, the improvement comprising one belt means for drivingly engaging both the forward and rearward rolls prior to connecting of the webs of the respective rolls whereby the rolls are driven at substantially the same speed when the connection is made, tension control means for maintaining a predetermined tension in the web, said control means including means for changing the speed of said belt means in response to the detection of variations from said predetermined tension, the change in speed restoring said predetermined tension in said web.
In an apparatus for providing a continuous supply of a web wherein the web is fed from a roll supported in a forward position on a roll stand, another roll of web material supported in a rearward position on the roll stand, and means actuatable in response to near depletion of the forward roll for adhesively connecting a leading end portion of the web of the rearward roll with the web of the forward roll and for thereafter severing the engaged portion of the forward roll from the remainder of the forward roll, the improvement comprising one belt means for drivingly engaging both the forward and rearward rolls prior to connecting of the webs of the respective rolls whereby the rolls are driven at substantially the same speed when the connection is made, a floating frame construction supporting said belt means, and means applying pressure to said frame construction for urging said belt means against said rolls.
In an apparatus for providing a continuous supply of a web wherein the web is fed from a roll supported in a forward position on a roll stand, another roll of web material supported in a rearward position on the roll stand, and means actuatable in response to near depletion of the forward roll for adhesively connecting a leading end portion of the web of the rearward roll with the web of the forward roll and for thereafter severing the engaged portion of the forward roll from the remainder of the forward roll, the improvement wherein said means for supporting the respective rolls comprises an endless conveyor, spaced apart roll shaft supports provided on said conveyor, said means actuatable in response to near depletion of the forward roll comprising detecting means for detecting the diameter of the forward roll, means responsive to operation of said detecting means when a first diameter is detected to operate said endless conveyor for moving the other roll supported in a rearward position to a connecting and severing position, belt means movable into engagement with said other roll for driving the other roll up to the speed of said forward roll, and means operable in response to detecting of a second diameter of said forward roll for initiating said connecting and severing operations.
Dependencies are inferred from the claim text.