초록 ▼

A single facer machine for making a corrugated web is provided with a vacuum means for retaining a corrugated medium on one of the corrugating rolls. Said one corrugating roll has a core through which a heated fluid may flow. The core is surrounded by a sleeve which contains peripheral longitudinall

A single facer machine for making a corrugated web is provided with a vacuum means for retaining a corrugated medium on one of the corrugating rolls. Said one corrugating roll has a core through which a heated fluid may flow. The core is surrounded by a sleeve which contains peripheral longitudinally extending flutes and valleys meshed with corresponding flutes and valleys on the other corrugating roll. A suction housing is juxtaposed to the outer periphery of said sleeve.

대표청구항 ▼

1. In a single facer machine having first and second corrugating rolls provided with longitudinally extending meshing flutes for corrugating a web of material passing therebetween, and suction means for retaining the corrugated web on approximately one-half the perimeter of said second roll, the imp

1. In a single facer machine having first and second corrugating rolls provided with longitudinally extending meshing flutes for corrugating a web of material passing therebetween, and suction means for retaining the corrugated web on approximately one-half the perimeter of said second roll, the improvement comprising: (a) said second roll having a central hollow core for receiving a heated fluid, the outer periphery of said hollow core having a plurality of circumferential grooves at spaced locations therealong; (b) a sleeve surrounding and secured to said hollow core, said sleeve having a plurality of spaced annular slots in the perimeter thereof, the longitudinally extending flutes of the second roll being on the perimeter of said sleeve, said sleeve having a plurality of passages extending radially from the inner periphery of each of said annular slots to the interior of said sleeve; (c) means for applying suction to said second corrugating roll by way of said grooves and slots to hold the corrugated web on a portion thereof, including a housing disposed diametrically opposite said one-half perimeter, said housing having strippers, each stripper being disposed in one of said slots for stripping the corrugated web from said flutes in said second corrugating roll. 2. In a machine in accordance with claim 1 wherein the annular slots in the perimeter of said sleeve are deeper than the depth of said flutes. 3. In a machine in accordance with claim 1 wherein each of the annular slots in said sleeve is radially coincident with one of the circumferential grooves in said core and said passages are holes communicating each of the slots with one of the grooves. 4. In a machine in accordance with claim 1 wherein said housing includes a plurality of sealing members, each member being disposed in one of said annular slots. 5. In a single facer machine having first and second corrugating rolls provided with longitudinally extending meshing flutes for corrugating a web of material passing therebetween, and suction means for retaining the corrugated web on approximately one-half the perimeter of said second roll, the improvement comprising: (a) said second corrugating roll having a central hollow core for receiving a heated fluid, (b) a sleeve surrounding and secured to said hollow core, said sleeve having a plurality of spaced annular slots in the perimeter thereof, a plurality of circumferential grooves at the interface of said core and sleeve, each groove being radially coincident with an annular slot, each annular slot communicating with a mating circumferential groove through a plurality of channels extending radially from the inner periphery of the slots to its mating groove; and, (c) means for applying suction to said second corrugating roll to hold the corrugated web thereon and including a housing diametrically opposite said one half perimeter, said housing having strippers, each disposed in one of said slots for stripping the corrugated web from said flutes in said second corrugating roll. 6. In a machine in accordance with claim 5 wherein the annular slots in the perimeter of said sleeve are deeper than the depth of said flutes. 7. In a machine in accordance with claim 5 wherein each channel is a hole and the diameter of each hole is less than the width of the annular slots. 8. In a machine in accordance with claim 5 wherein said housing includes a plurality of sealing fingers, each finger being disposed in an annular slot. 9. In a machine in accordance with claim 5 wherein said slots are on the outer periphery of said sleeve and said grooves are on the outer periphery of said core. 10. In a single facer machine having first and second corrugating rolls provided with longitudinally extending meshing flutes for corrugating a web of material passing therebetween, and suction means for retaining the corrugated web on approximately one-half the perimeter of said second roll, the improvement comprising: (a) said second corrugating roll having a central hollow core for receiving a heated fluid, (b) a sleeve surrounding and secured to said hollow core, a plurality of spaced circumferential grooves at the interface of said core and sleeve, a plurality of circumferentially spaced channels extending radially from the outer periphery of the sleeve to one of said grooves at spaced locations along the length of said second corrugating roll; and, (c) said suction means including a housing diametrically opposite said one-half perimeter, whereby suction is communicated from said housing to the channels on said one-half perimeter by said grooves and the remaining channels. 11. In a machine in accordance with claim 10 wherein said grooves are on the outer periphery of said core.