Coating roll

Claim 2

A coating roll for a die cutting or coating machine, said roll comprising a cylinder having an axially extending slot in the outer surface, a permanent magnetic member positioned in said slot in a spaced relation to the surface of said cylinder, a resilient coating mat wrapped around the outer periphery of said cylinder and first magnetizable means on one end of the mat positioned in said slot and held therein by the magnetic force of said permanent magnetic member.

Claim 3

The roll according to claim 1 incluDing means for registering said one end of the mat with said cylinder.

Claim 4

The roll according to claim 1 including second magnetizable means on the other end of said mat, said second means being positioned in said slot and held therein by the force of said magnetic member.

Claim 5

The roll according to claim 1 wherein said cylinder includes a second slot in the surface of said cylinder and a second permanent magnetic member positioned in said second slot, the outer surface of said second magnetic member being flush with the surface of said cylinder and said coating mat including a flexible magnetizable sheet on the back of said mat to engage said second magnetic member.

Claim 6

The roll according to claim 4, wherein said mat includes a second magnetizable means on the other end of said mat, said second magnetizable means being positioned in said first slot and held therein by the force of said magnetic member.

Claim 7

The roll according to claim 5 including first means positioned to engage said first magnetizable means for registering said first magnetizable means in said slot.

Claim 8

The roll according to claim 6 including second means positioned to engage said second magnetizable means for locking said first and second magnetizable means in said slot.

Claim 9

The roll according to claim 7 wherein said first and second means each include a tapered locking surface positioned to engagedthe magnetizable means to mechanically lock the mat to the roll.

Claim 10

A coating roll for a die cutting or coating machine, said roll comprising; a cylinder having axially extending slots on diametrically opposite sides of said cylinder, one of said slots being deeper than the other said slot, a permanent magnetic member in each of said slots, one of said permanent magnetic members having an outer configuration conforming to the outer surface of said cylinder and the other of said permanent magnetic members being recessed inwardly from the outer surface of said cylinder, a resilient coating mat mounted on the outer surface of said cylinder and a magnetizable bar on each end of said mat, said magnetizable bars being positioned in the deeper of said slots and held therein by the force of the permanent magnetic member therein.

Claim 11

A coating roll for a die cutting or coating machine, said roll comprising; a cylinder having axially extending slots on diametrically opposite sides of said cylinder, one of said slots being deeper than the other said slot, a permanent magnetic member in each of said slots, one of said permanent magnetic members having an outer configuration conforming to the outer surface of said cylinder and the other of said permanent magnetic members being recessed inwardly from the outer surface of said cylinder, a resilient coating mat mounted on the outer surface of said cylinder and a magnetizable bar on each end of said mat, said magnetizable bars being positioned in the deeper of said slots and held therein by the force of the permanent magnetic member therein.

Claim 12

The roll according to claim 9 including means for registering one of said magnetizable bars with respect to the surface of said cylinder.

Claim 13

The roll according to claim 9 including a second means for locking said magnetizable bars in said slot.

Claim 14

The roll according to claim 9 wherein said mat includes a magnetizable backing sheet, said one of said permanent magnets holding said backing sheet against the surface of said cylinder.

Claim 15

The roll according to claim 9 wherein said deeper of said slots includes outwardly tapered surfaces at each end, a pair of adjusting wedges positioned to slide on said tapered surfaces and means for moving said wedges inwardly into engagement with one of said bars to adjust the angular position of said bar with respect to the surface of said cylinder.

Claim 16

The roll according to claim 12 including a second set of wedges positioned to slide on the oppositely disposed tapered surfaces and means for moving said second wedges inwardly to lock said bars in said slot.

Claim 17

The roll according to claim 14 wherein said first and second sets of wedges each include a tapered locking surface for mechanically engaging and locking said magnetizable bars in said slot.

Claim 18

A coating roll for a die cutting or coating machine, said roll comprising: a cylinder having an axially extending slot in the outer surface, a permanent magnet member in said slot, a resilient coating mat mounted on the outer surface of said cylinder, a bar secured to each end of said mat and being positioned in said slot, said bars being formed from a magnetizable material whereby said bars are held in said slot by the magnetic force of said bar, first means within said slot for registering said mat on said cylinder, and second means within said sLot for mechanically locking said bars in said slot.

Claim 19

A coating roll for a die cutting or coating machine, said roll comprising: a cylinder having an axially extending slot in the outer surface, a permanent magnet member in said slot, a resilient coating mat mounted on the outer surface of said cylinder, a bar secured to each end of said mat and being positioned in said slot, said bars being formed from a magnetizable material whereby said bars are held in said slot by the magnetic force of said bar, first means within said slot for registering said mat on said cylinder, and second means within said sLot for mechanically locking said bars in said slot.

Claim 20

The roll according to claim 16 wherein said mat includes a magnetic layer on the surface adjacent said cylinder and a second slot on the diametrically opposite side of said first slot and a second permanent magnetic member in said second slot, whereby the magnetic force of said second magnetic member will attract the layer of magnetic material on said coating roll.

Claim 21

The roll according to claim 16 wherein said first registering means comprises a wedge having a tapered surface positioned to engage the side wall of said slot and said second locking means comprises a tapered surface on said wedge positioned to engage said bar.