US2412047A

US2412047A - Web feeding and slitting mechanism

Info

Publication number: US2412047A
Authority: US
Inventors: William F Huck
Original assignee: R Hoe and Co Inc
Current assignee: R Hoe and Co Inc
Priority date: 1944-09-08
Filing date: 1944-09-08
Publication date: 1946-12-03
Anticipated expiration: 1963-12-03

Description

w.F. HUCK 2,412,047 WEB FEEDING AND SLITTING MECHANISM Dec. 3, 1946.

Filed Sept. 8, 1944 2 Sheets-Sheet l INVENTORL Patented D tion of NewYork' This invention relates to printing machines andmore particularly to web feeding and slitting I mechanisms for machines that print on a web of paper or other material.

The device of the invention is especially useful in combination with a drag roller such as is usually positioned over a former folder, for simultaneously slitting a number of webs,'and in cooperation with the drag roller, feeding the .webs to and over the former, but it can also be used efliciently elsewhere in the printing machine."

The use of the device of the invention eliminates the necessity for using pressure rollers which are commonly called :"trolley rollers, to press the a web, or webs, against the drag roller,

An object of the invention is to provide a combined web slitter and web presser member for use in cooperation with an abutment roller to slit and feed webs.

Another object is to provide, in combination with a rotary web slitting knife, web pressin means driven.in unison with the'slitting knife and arranged to engage the web edges adjacent the vplace where the. web is slit, and press the edgesagainst the abutment roller.

It is also an object of the invention toprovlde' an improved web slitting and feeding device for a printing press which will be simple, durable and relatively inexpensive in construction, as well as convenient, practical, serviceable,,and efficient I F q,

in use.

With the foregoing and other objects in view,

\ that will appear as the description proceeds, the

invention resides in the combination and arrangement of parts, and in the details of construction hereinafter described and claimed, it being understood that various changes in the precise embodimentof the invention herein disclosed may be made within the scope of what is claimed, withoutdeparting from the spirit of the invention.

' monly called a drag roller.

Application September-,8, 1944, Serial No. 553,196 11cm (Cl.164-81)- 2 web slitter and feeding device, taken on the line HofFigure 2; and

Figure 4 is a sectional view of the device taken on line 4-4 of Figure 3. J

The combined web slitting and feeding device of this invention is arranged for slitting and feeding a web or webs Ii (Figures 1 and 2), into ribbons that arecarried over formers l2 and i3. The device is supported in cooperating relation with an abutment roller I, which is also com- I From each of the formers l2 and i3, the web or webs ii, are fed between folding rollers i5 and It to a delivery of the printing machine. The drag roller I4 is driven from the printing machine drive (not shown), through a gear l1 secured to its shaft l8. The, dra'g roller- II is commonly provided with a number ofsuitably positioned grooves 2|, any

of which may cooperate with a slitting blade l3,

that is preferably made in two semi-circular pieces I911 and "lb respectively so that it may readily be removed and replaced. As herein shown, one slitting device is positioned on a shaft 22, for cutting a web into two ribbons; and two additional devices are shown in dotted lines. By using one or both of these additional slitting de-" vices, the web or webs ii, may be cut into three or four ribbons, as required.

The slitter shaft 22 is driven through a gear 23, that is in mesh with-the gear' H on the shaft it of the drag roller ll. Suitable

web feeding devices

24 and 25 are mounted on the shaft", being disposed thereqn to en e the outer edges of the web or webs ii, and being arranged to be driven by the shaft 22. These

web feeding devices

24 and 25 are preferably similar to the de- A preferred embodiment of the invention is illustrated in the accompanying drawings, where- Figure 1 is a view showing a pair of formers, and a drag roller in cooperation with the web slitting and feeding device of the invention, whereby a web or webs may be cut into two or more ribbons and these ribbons fed to the fon'ners;

Figure 2 is a cross-sectional view through the drag or abutment roller and. showing an end view of the combined web slitter and feeding device;

F'igurefi is a sectional view of the combined vice of the invention herein disclosed, but the slitting member is omitted. V

- As best shown in Figure 3, the slitting knife I! is mounted on a slitter seat 2'! of a sleeve 28, that is secured to the shaft 22 by a, set screw 29. The knife I5 is' disposed between two annular web presser members, or rings 3| and 32 each having

parallel faces

33 and 34. The rings 3| .and 32 ,are arranged to bepressed against opposite sides of the knife I9 and the rings are driven from the shaft 22 by being pressed between a. face 36 of a.

collar'31, and a face 38 of a flanged collar portion 330i the sleeve 28. The collar 31 has a *cylindrical stepped surface I l positioned inside of the ring-3|, and'the flanged portion 39 of the sleeve 28 has a cylindrical stepped. surface 42 positioned inside of the ring 32. The internal 'diameters of the rings 3! and 32 are greater than the external diameters of the cylindrical surfaces ti and 42 by an outer edge 5| of a cup-shaped circular adjustin g nut 52 which is screw-threaded into the sleeve 28. Tightening or loosening the nut 52 will adjust the pressure of thedisc springs" against the collar 81 and thus will adjust the pressure applied to the sides of the rings 8| and 82 as well as the pressure of these rings against the knife l9. Pins 58 secured in the flanged portion 88 of sleeve 28, extend through holes 54 provided in the slitting knife l8 and cause the knife l9 to rotate with the sleeve 28 when it is rotated by the shaft 22. The pins 58 also provide a means for holding the two halves of the knife I9 in position.

Plungers 58 carried by the-nut 52, and having V-shaped ends 51, are spring pressed by coiled springs 58 into v-shapedgrooves 58 cut into the sleeves 28, to hold the nut 52 in its adjusted positions. The springs 58 are seated in openings 8| provided in the plunger 58 and abut against re-' movable slotted pins 82 inserted axially into the nut,52 adjacent its periphery. A snap ring 88 inserted in a groove 84 in the front end of the sleeve 28 forms a stop for the nut 52 when it is retracted. When associated with an abutment roller I4, the web slitting and feeding device herein disclosed slits the web or webs II by cooperation of the knife l8 and the slot or groove 2| in the abutting roller, while the -annular presser members 8| and 82 on each side of the knife l8 press the ribbon edges, at the out, against the roller l4, whereby an even feeding force will be applied to-each of these edges while the web is being slit. The difference in diameter between the inner periphery 85 of each ring 8| or 82, and the outer diameter of the stepped surfaces 4| of the friction collar 81, and 42 of the sleeve 28, permits the rings 8| and 82 to be moved laterally with respect to their axes, or'in. other words to be pushed of! center and into eccentric relation to their driving members,'the friction collar 81-, the

to receive the edge of the slitter knife to slit the webs, an annular presser member having two parallel friction faces in planes normal to its axis and one of which faces engages the slittter knife, and means rotating with the slitter knife and having a' driving member frictionally engaging the other contact face of the presser member, the presser'member being adapted to move laterally in respect to its axis without movin the driving member and into an eccentric position relative to the axis of the slitter knife .to yieldingly press the ribbons cut from the webs against the abutment roller and thereby feed them forward.

2.- In a device for cutting webs into ribbons, a slitter knife rotatable about its axis, an abutment roller rotatable on an axis parallel to the axis of the slitter knife and cooperating therewith to cut the webs, an annular presser member at eachv side of the slitter knife, and having one side in engagement therewith, and a collar member rotating with the slitter knife and in frictional engagement with the other side of each-presser member, the prr sser members being adapted to move laterally in respect to the axis of the slitter knife into an eccentric position to press each edge formed by cutting the webs into ribbons against the abutment roller to feed the ribbons forward.

3. In a device for cutting webs into ribbons, a slitter knife rotatable about its axis, an abutment roller rotatable on an axis parallel to the axis of the slitter knife and cooperating therewith to cut the webs, two annular presser members each having a side face in engagement with one side face of the slitter knife, and two collars rotating with the slitter knife and in frictional engagement with the other faces of the presser member, the presser members being adapted to move laterally into eccentric position relative to the axis of the slitter knife to press the edge of the ribbons cut from the webs against the abutment roller to lead them forward.

4. In a device for cutting webs into ribbons,

' a slitter knife rotatable about its axis, an abutment roller rotatable on an axis. parallel to the axis of the slitter knife and cooperating therewith to cut the webs, an annular presser member at each side of the slitter knife and each having one 'side in engagement therewith, a pair 'of collars rotating with the slitter knife and each being in frictional engagement with the other side of each presser member, and an adjustable knife l8, and-the flange 89, when the webs H are being fed'bet'ween the drag roller I4 andthe' presser members 8| and 82. By manipulating the adjusting nuts 52, any desired driving pressure of the presser members 8| and 82 upon the webs may be obtained, and if one or more of the webs should break before reaching'the slitter device, the remaining webs will still be pressed against the drag roller by substantially the same pressure as before.

4 It will be understood that the invention may be embodied in other'speciflc forms without departing from the spirit or essential attributes thereof, and it is therefore desired that the present embodiment be considered in all respects as slitter knife rotatable about its axis, an abutment roller rotatable on an axis parallel to the axis of the slitter knife and having a groove positioned tension applying means acting onat least one of the collars to press it against the-presser members-and said member against the slitter knife, the presser members being adapted to move laterally in respect to the axis of the slitter knife into an eccentric position to press each edge 'formed'by cutting the webs into ribbons against the abutment roller to feed' them forward.

5. In a web slitting and feeding device, a driven disc type slitter knife, a drag roller having. a V groove positioned to receive the edge of the slitter knife to cut webs into ribbons, a presser member adjac ent the slitter knife and having two axis anda peripheral face cooperating with the drag roller to feed the ribbons cut from the webs, a spring pressed collar having a friction face in engagement with one of the friction faces on the presser member to press it against the slitter knife. the presser member being adapted to move laterally without moving the collar and into eccentric relation 'in respect to the slitter knife to apply yielding pressure to the ribbons cut fro the webs. I e

pressed collar in engagement with at least one of the presser members to press it against the slitter knife, the presser member being adapted to move laterally into eccentric relation in respect to the slitter knife to apply pressure to the ribbons cut from the webs.

7. In a device for slitting and feeding'ribbons from a web, a driven shaft, a slitter knife mounted on the shaft to rotate therewith, a ribbon engaging presser member at each side of the slitter knife and being adapted to move laterally in respect to-the axis of the shaft to be eccentric to the slitter knife, and a member engaging friction collar mounted on the shaft to rotate therewith to drive the presser members.

8. In a device for slitting and feeding ribbons out from. a web, a. driven shaft, a slitter knife mounted on the shaft to rotate therewith, a ribbon engaging presser member at each side of the slitter knife and adapted to move laterally in respect to the axis of the shaft to be eccentric to the slitter knife, and a member engaging friction collar mounted On the shaft to rotate therewith to drive the presser members.

9. Ina device for slitting and feeding ribbons from a web, a driven shaft, a slitter knife mounted on the shaft to rotate therewith, a ribbon engagingpresser member at each side of the slitter knife and adapted to be moved laterally with respect to the axis of the shaft to run eccentric 6 to the slitter knife, a member collar mounted on the shaft'to rotate therewith to drive the presser members, spring means acting against the friction collar, and means to adjust the pressure of the spring.

10. In a device for slitting and feeding ribbons ribbons cut from a web, a driven slitter support including a sleeve having a flanged collar, an axially slidable collar on the sleeve, a pair of presser rings'located between the collars and loose on the sleeve, a nut adjustable on the sleeve,

and a spring between the nut and the slidable collar, in combination with a slitter knife held between the presser members and rotatably driven with one of the collars, and a driven abutment roller having a groove cooperating with the slitter knife, the slitter'support being so mounted with respect to the abutment roller that the presser rings are forced into eccentric relation with the axis of the sleeve.

11. In a device for slitting and feeding ribbons f out from a web, a-driven slitter shaft, a sleeve secured to the shaft and having a flanged collar, an axially slidable collar on the .sleeve, a pair of presser members between the collars and loose on the sleeve, a slitter knife between the presser members and rotatably driven with one of the collars, a nut adjustable on the sleeve, a spring between the nut and the slidable collar, and a driven abutment roller having a groove cooperating with the slitter knife; the slitter shaft being mounted with respect to the abutment roller that the presser members are forced into eccentric'relation with the slitter shaft.

WIILIAM F. HEICK.

engaging friction