Rotary cutting or creasing machine

Claim 2

A rotary cutting or creasing machine including a roller or drum cooperating with another surface to form a nip, means for transmitting drive to said roller, a cylindrical sleeve of a diameter greater than that of said roller and carrying cutting and/or creasing means, and means to enable said sleeve to be removably located around said roller for rotation in conjunction therewith with the axis of said sleeve offset from the axis of said roller.

Claim 3

A rotary cutting or creasing machine according to claim 1, wherein said roller and said sleeve are arranged such that the outer peripheral surface of the roller contacts the inner peripheral surface of said sleeve.

Claim 4

A rotary cutting or creasing machine according to claim 2, including adjustable support means engageable with said sleeve to support same in relation to said roller.

Claim 5

A rotary cutting or creasing machine according to claim 3, wherein said support means comprises rolling members mounted on arms located on opposite sides of said roller and mounted for pivotal movement to and from said roller.

Claim 6

A rotary cutting or creasing machine according to claim 4, wherein said arms are pivoted such that, irrespective of the sleeve diameter, pivotal adjustment of the arms results in the rolling members engaging the sleeve approximately at its widest part.

Claim 7

A rotary cutting or creasing machine according to claim 3, wherein said support means comprise bars located outwith said roller and slidable in a direction normal to the axis thereof, said bars carrying rolling members for engagement with the inner peripheral surface of said sleeve.

Claim 8

A rotary cutting or creasing machine according to claim 3, wherein said other surface is that of a further roller.

Claim 9

A rotary cutting or creasing machine according to claim 7, wherein said first-mentioned roller is located above said further roller, there being a conveyor belt passing through the nip between said rollers to carry material to be cut or creased therethrough.

Claim 10

A rotary cutting or creasing machine according to claim 1, wherein said roller is carried in axially spaced bearings at one end and in a detachable end support at the other end whereby the end support may be removed to enable said sleeve to be slid on or off the roller from that end.

Claim 11

A rotary cutting or creasing machine according to claim 9, wherein said end support is slidably located in a slideway formed in the machine frame, there being releasable locking means operable to secure said end support against sliding and to release same for removal.

Claim 12

A rotary cutting or creasing machine according to claim 9, including means enabling enlargement of the nip between said roller and said cooperating surface to facilitate endwise removal of said sleeve.

Claim 13

A rotary cutting or creasing machine according to claim 8, wherein said further roller is provided with a shaft rotatable in bearings vertically slidably mounted in the machine frame whereby vertical movement of said bearings lowers said roller, conveyor belt and sleeve relative to said upper roller to facilitate endwise removal of said sleeve.

Claim 14

A rotary cutting or creasing machine according to claim 8, wherein said sleeve is provided at at least one end thereof with an annular driving ring of hard resilient material engageable with said conveyor belt.

Claim 15

A rotary cutting or creasing machine according to claim 13, wherein the surface of said further roller is roughened in the area corresponding to said ring to improve transmission of drive therebetween.

Claim 16

A rotary cutting or creasing machine inCluding a pair of rotary rollers or drums located one above the other and forming a nip therebetween, a conveyor belt passing through said nip for transport therethrough of material to be cut or creased, means for driving said rollers and said belt, a cylindrical sleeve of diameter greater than that of said upper roller and carrying cutting and/or creasing means, a removable end support for said upper roller to enable said sleeve to be slid on and off said roller from one end thereof and adjustable support means engageable with said sleeve to support same in peripheral contact with said roller for rotation in conjunction therewith with the axis of said sleeve offset from the axis of said upper roller.

Claim 17

A rotary cutting or creasing machine inCluding a pair of rotary rollers or drums located one above the other and forming a nip therebetween, a conveyor belt passing through said nip for transport therethrough of material to be cut or creased, means for driving said rollers and said belt, a cylindrical sleeve of diameter greater than that of said upper roller and carrying cutting and/or creasing means, a removable end support for said upper roller to enable said sleeve to be slid on and off said roller from one end thereof and adjustable support means engageable with said sleeve to support same in peripheral contact with said roller for rotation in conjunction therewith with the axis of said sleeve offset from the axis of said upper roller.

Claim 18

A rotary cutting or creasing machine according to claim 1, including support means for supporting said sleeve in relation to said roller, said support means being adjustable to accommodate sleeves of different diameters.

Claim 19

A rotary cutting or creasing machine according to claim 16, in which said support means comprises arms on opposite sides of said sleeve and engageable therewith.

Claim 20

A rotary cutting or creasing machine according to claim 17, in which said arms are pivotally mounted.

Claim 21

A rotary cutting or creasing machine as claimed in claim 1, wherein said roller is carried in bearing means at one end and in a movable end support at the other end so that the end support may be moved to enable said sleeve to be slid on or off the roller from that end.