US2901191A

US2901191A - Paper machinery

Info

Publication number: US2901191A
Application number: US657274A
Authority: US
Inventors: Richard W Phelps
Original assignee: Black Clawson Co
Current assignee: Black Clawson Co
Priority date: 1957-05-06
Filing date: 1957-05-06
Publication date: 1959-08-25
Anticipated expiration: 1976-08-25

Description

Aug. 25, 1959 R. w. PHELPS PAPER MACHINERY 2 Sheets-Sheet 1 Filed May 6, 1957 INVENTOR RICHARD W. PHELPS ATTO R NEYS Aug. 25, 1959 R. w. PHELPS 2,901,191

PAPER MACHINERY Filed May 6, 1957 2 Sheets-Sheet 2 FIG-4 INVENTOR RICHARD W. PHELPS W, aw, MM

ATTORNEYS 2,901,191 Patented Aug. 25, 1959 2,901,191 PAPER MACHINERY Richard W. Phelps, Fulton, N.Y., assiguor to The Black- Clawson Company, Hamilton, Ohio, a corporation of Ohio Application May 6, 1957, Serial No. 657,274 6 Claims. (Cl. 242-66) This invention relates to winding apparatus for web materials.

The invention has particular relation to Winders employing a rider roll which is in constant engagement with an upper portion of the roll during winding and which therefore travels upwardly as the web material accumulates on the new roll with resulting increase inits diameter. This rider roll is commonlydriven at a surface speed slightly in excess of that of the winding roll, and thus with continuous creep therebetween, to assure maintained tightness of winding. However, this action of the rider roll is most important during the start of each new roll on a core or mandrel and the subsequent early stages of its winding, and it is of decreasing importance as the new roll builds up in diameter.

It is a primary object of the present invention to provide a simple and effective rider roll assembly for a winder as outlined above in which as the diameter of the new roll increases, the friction between the rider roll and the Web is caused to decrease by means of a control responsive to the extent of upward movement of the rider roll by the accumulated web material on the new roll.

Another object of the invention is to provide such a rider roll assembly in which the driving and loading relation of the rider roll and the new roll is caused to decrease as the diameter of the new roll increases by means of controlled creep between the rider roll and its associated drive mechanism as the rider roll assembly is raised along the Winder frame by the accumulated web material on the new roll.

An additional object of the invention is to provide a rider roll assembly as outlined above in which the rider roll is driven by a drive belt running at a constant speed slightly in excess of that of the winding roll and in whichthe driving and loading relation of this belt to the rider roll is continuously decreased by reduction in the tension in the belt in accordance with the vertical position of the rider roll assembly on the winder frame.

It is also an object of the invention to provide a rider roll assembly having the above general characteristics in which the tension of the driving belt for the rider roll is controlled by a fluid pressure cylinder and in wln'ch as the rider roll moves upwardly, the tensioning force of the cylinder is continuously reduced by means of a control member on the rider roll carriage and a cooperating cam mounted on the winder frame.

Additional objects and advantages of the invention will be apparent from the following description, the accompanying drawings and the appended claims.

In the drawings Fig. 1 is a view in side elevation showing a Winder incorporating a rider roll assembly in accordance with the invention;

Fig. 2 is a fragmentary front elevational view looking from right to left in Fig. 1;

Fig. 3 is an enlarged side elevational view showing one end of the rider roll assembly of Figs. 1 and 2 and associated frame structure;

Fig. 4 is a front elevational view looking from right to left in Fig. 3; and

Fig. 5 is an enlarged fragmentary section taken on the line 55 of Fig. '1.

Referring to the drawings, which illustrate a preferred embodiment of the invention, the winder in Figs. 1 and 2 includes a main framework formed by top and bottom side frames 10-11 and 12-13 interconnected by suitable crossbeams and tie rods 15 and 16. The

drums

20 and 21 on which the new roll 22 is supported and driven are mounted on the

bottom frames

10 and 12 and driven in any suitable manner from a conventional drive source, not shown. The web 25 is shown as guided to the front winder'drum by rolls 26 and 27 and it will be understood that slitting apparatus may be mounted in the usual manner in the bottom frames if desired.

The rider roll assembly includes a pair of carriages 30 and 31 mounted for up and down sliding movement along ways 32 on the front of each of the

upper side frames

11 and 13, and the rider roll 33 is journaled in bearings 34 depending from carriages 30 and 31. A counterweighting system for therider roll assembly includes a counterweight supported for guided movement in the upper side frames and connected to the carriages 30 and 31 by chains 41 running over sprockets 42 and 43 on cross shafts 44 and 45 respectively in the top of the side frames.

The movements of carriages 30 and 31 are coordinated to maintain the rider roll 33 in accurate parallelism with the mandrel for the new roll 22. Referring particularly to Fig. 2, a torque shaft 54 extends across the full width of the winder and is journaled at opposite ends in the two carriages 30 and 31. This shaft 54 has secured thereon a pair of pinions 55 each of which engages a rack 56 mounted on the adjacent

upper side frame

11 or 13. The pinions 55 will therefore track at the same rotational speed along the racks 56 and thus force the two carriages to travel at the same rate.

The drive for the rider roll 33 is shown as duplicated at both sides of the winder. Referring to Fig. 1, the

a drive belt 60 on the control side of the winder is driven carriage 30. A tensioning pulley for belt 60 is carried by an arm 66 pivoted on the upper end of the side frame 11, as by means of the cross shaft 45. This drive is shown in Fig. 2 as duplicated at the opposite side of the winder by the parts 60'-66'.

In accordance with the invention, the supporting arm 66 for pulley 65 is operated by a fluid pressure cylinder 70, such as an air cylinder, mounted on the side frame 11, the other arm 66' having a similar operating cylinder 70, and the pressure supply to these cylinders is continuously varied as the rider roll assembly travels along ways 32. Referring particularly to Figs. 1 and 3, an air regulator 75, such as an adjustable reducing valve, is mounted on the carriage 30, as by means of the bracket 76 shown in Fig. 5, and is connected to the air supply line 77. A line 78 leads from the outlet side of air regulator '75 to the two

cylinders

70 and 70, and the air regulator includes a reciprocable plunger 80 which provides high pressure for maximum tension in belt 60 when this plunger is at its innermost position and reduced pressure for decreased belt tension as the plunger moves outwardly.

Provision is made for continuously changing the position of the plunger 80 as the carriage 30 travels along the frame. Referring particularly to Fig. l, a cam 81 is mounted on the side frame 11 by brackets 82 for engagement by a follower roller 85 mounted on the outer end of the plunger 80 by means of a yoke 86, and the forward edge of the cam 81 is contoured with respect to the adjacent way 32 to cause continuously controlled outward movement of plunger 80 as the carriage 30 moves from its lowest to its highest position. Satisfactory results for practical purposes have been obtained by constructing cam 81 as a straight bar inclined to diverge upwardly from the adjacent way 32 at a small angle of the-order of 1.

With this construction, when the rider roll assembly is at its lowest position and the rider roll 33 is helping to cause the end of the web to start winding on a new core, maximum pressure will be supplied to the cylinders 70 and 70' to rock the

arms

66 and 66 in the direction moving pulleys 65 and 65' upwardly. This establishes a high tension in the

drive belts

60 and 60 for maximum driving of the rider roll 33 and minimum creep of the belts about the rider roll driven

pulleys

62 and 62, thus creating a maximum downward pull on the belts between the carriages 30 and 31 and the respective drive pulleys 61 and 61 which loads the rider roll onto the new roll to assure a firm and tight start. Then as the winding continues and the diameter of the new roll increases, the rider roll assembly is pushed upwardly, and as this occurs, the air supply to the cylinders will be reduced to cause corresponding decrease in the belt tension. Since this result is independent of roll size, the invention is equally applicable to rolls of any desired maximum diameter and axial length, and for all such cases it offers advantages of simplicity of construction, ease of applicability to existing winders, and assured economy and reliability of operation.

While the form of apparatus herein described constitutes a preferred embodiment of the invention, it is to be understood that the invention is not limited to this precise form of apparatus, and that changes may be made therein without departing from the scope of the invention which is defined in the appended claims.

What is claimed is:

1. In a winding machine for webmaterial including side frames and a rider roll adapted to engage an upper portion of the new roll being wound and to be moved upwardly by the accumulated web material on said new roll, the combination of carriage means for said rider roll, means supporting said carriage means for upward movement on said side frames along a predetermined path,- friction drive means for driving said rider roll at a predetermined'greater surface'speed than said new roll, variable means for regulating said friction drive means to provide varying degrees of friction thereon and correspondingly variable creep between said rider roll and said new roll creating variable loading of said rider roll on said new roll, and means responsive to the position of said carriage means on said path for adjusting said variable means to provide maximum driving and loading action for said rider roll when said carriage means is at its lowermost position on said path and decreasing said driving and loading action as said carriage means moves upwardly along said path.

2. In a winding machine for web material including side frames and a rider roll adapted to engage an upper portion of the new roll being wound and to be moved upwardly by the accumulated web material on said new roll, the combination of carriage means for said rider roll, means supporting said carriage means for upward movement on said said side frames along a predetermined path, means including a drive belt for driving said rider roll at a predetermined greater surface speed than said new roll, variable means for regulating the tension in said belt, and means responsive to the position of said carriage means on said path for adjusting said variable means to provide maximum tension in said belt when said carriage means is at its lowermost position on said path and decreasing tension in said belt as said carriage means moves upwardly along said path.

3. In a Web winding machine for web material including side frames and a rider roll adapted to engage an upper portion of the new roll being wound and to be moved upwardly by the accumulated web material on said new roll, the combination of carriage means for said rider roll, means supporting said "carriage means for upward movement on said side frames along a predetermined path, means including a drive helt for'driving said rider roll at a predetermined greater surface speed than said new roll, variable means for regulating the tension in said belt, means on said carriage means including a moveable memher for adjusting said variable means, and an operating member on one of said side frames for engagement by said movable member during upward movement of said carriage means and cooperating therewith to provide maximum tension in said belt when said carriage means is at its lowermost position on said path'and decreasing tension in said belt as said carriage means rises along said path.

4. In a winding machine for web material including side frames and a rider roll adapted to engage an upper portion of the new roll being Wound and to be moved upwardly by the accumulated web material on said new rollgthe combination of carriage means for said rider roll, means supporting said carriage means for upward movement on said side frames along a predetermined path, means including a drive belt for driving said rider roll at a predeterminedgreater surface speed than said new roll, fluid pressure means for regulating the tension in said belt, and means responsive to the position of said carriage means on said path for adjusting said fluid pressure means to provide maximum tension in said belt when said carriage means is at its lowermost position on said path and decreasing tension in said belt as said carriage means moves upwardly along said path.

5. In a winding machine for web material including side frames and a rider roll adapted to engage an upper portion of the new roll being wound and to be moved upwardly by the accumulated web material on said new roll, the combination of carriage means for said rider roll, means supportingsaid carriage means for upward movement on said side frames along a predetermined path, means including a drive belt for driving said rider roll at a predetermined greater surface speed than said new roll, fluid pressure means for regulating the tension in said belt, means on said carriage means including a movable member for adjusting said fluid pressure means, and an operating member on one of said side frames for engagement by said movable member during upward movement of said carriage means and cooperating therewith to provide maximum tension in said belt when said carriage means is at'its lowermost position on said path and decreasing tension in said belt as said carriage means rises-along said path.

6. In a winding machine for web material including side frames and a rider roll adapted to engage an upper portion of the new roll being wound and to be moved upwardly by the accumulated web material on said new roll, the combination of carriage means for said rider roll, means supporting said carriagemeans for upward movement on said side frames along a predetermined path, means including a drive belt for driving said rider roll at a predetermined greater surface speed than said new roll, means including a fluid pressure cylinder on said side frames for regulating the tension in said belt, means including a movable member on said carriage means for adjusting said cylinder means, and a cam on one of said frames for engagement by said movable member during upward movement of said carriage means and cooperating therewith to provide maximum tension in said belt when said carriage means is at its lowermost position on said path and decreasing tension in said belt as said carriage means rises along said path.

References Cited in the file of this patent UNITED STATES PATENTS 2,012,118 Cameron Aug. 20, 1935 2,270,043 Fournes's et al I an. 13, 1942 2,677,508 Locke May 4, 1954