US3306814A - Paper making machine wringer apparatus - Google Patents

Description

Feb. 28, 196? c. P. M HUGH PAPER MAKING MACHINE WRINGER APPARATUS Filed Ma rch 27, 1964 4 Sheets-Sheet 1 INVENTOR CHAFL ES P Mchl/Gf/ ATTOZ/VEVS Feb. 28, 1967 C. P. M HUGH PAPER MAKING MACHINE WRINGER APPARATUS Filed March 27, 1964 4 Sheets-Sheet 2 W [M 1 9am I 1 I I l INVENTOR.

CHAALES P Ma HUGH A 770/?NE ys Feb; 28, 1967 c. P. MCHUGH 3,306,814

PAPER MAKING MACHINE WRINGER APPARATUS Filed March 27, 1964 4 Sheets-Sheet 3 INVENTOR CHARLES I? Mr HUGH ATTOF/VEXS Feb. 28, 1967 c. P. M HUGH 3,306,814

PAPER MAKING MACHINE WRINGER APPARATUS Filed March 27, 1964 4 Sheets-$heet 4 iLJ INVENTOR CHARLES E MC HUGH United States Patent Ofifice Patented Feb. 28, 1967 3,306,814 PAPER MAKEIG MACHINE WRINGER APPARATUS Charles P. McHugh, Ridgewood, N.J., assiguor to Raybestos-Manhattan, Inc., Passaic, N.J., a corporation of New Jersey Filed Mar. 27, 1964, Ser. No. 355,182 Claims. (Cl. 162-358) This invention relates to a press roll system or wringer apparatus for paper making machines.

In paper making machines, large rubber covered steel rolls are used as the top press rolls in the press system for squeezing out or expelling water from a wet woolen felt carrier holding a web of paper which is moved and pressed between the press rolls. These rubber covered press rolls are massive and for modern large paper making machines are excessively heavy. It is not unusual to have some of these press rolls weigh 50,000 lbs. or more. When the rubber which is bonded to the steel roll needs replacement, which is quite frequent, the steel roll has to be removed from the machine and transported to the rubber manufacturer who specializes in this work of recovering the roll with rubber.

Recovering such a press roll presents a number of difficult and costly problems. It is a very difficult task to remove such heavy rolls from a paper making machine and also to replace them with recovered rolls. In many cases rolls requiring recovering may have to be sent hundreds of miles to and from the rubber factory where such recovering is processed, and the cost of transportation for this purpose is inordinately large. This operation itself may require several months to complete. In addition, it is always necessary for the paper mill to have at least one spare rubber covered roll for each position on the machine in storage at the paper mill for quick replacement either when there is need of a rubber recovering job or in case of an accidental breakdown. The cost of the large cast iron or steel roll bodies is usually many times the cost of the rubber covering; and consequently a paper mill has considerable investment tied up in spare rolls simply as insurance against a replacement-need or accidental breakdown.

The present invention relates to a press roll system or wringer apparatus for a paper making machine which provides an effective solution for these stated problems.

In the wringer apparatus of the present invention I have devised, in lieu of the customary top rubber press roll in the press roll system, a top press mechanism which embodies a removable and replaceable rubber blanket or belt as the means which is mated to the bottom press roll and between which a wet carrier holding a web of paper is adapted to be moved and pressed for expelling water from the paper carrier and web. The said top press mechanism of the invention further embodies a structure and design operable to permit effective operation of the wringer apparatus in use and to enable the ready removal of the rubber blanket or belt from the apparatus when such belt is expended and the ready replacement therefor of a new rubber blanket or belt.

With the provision of the novel top press mechanism of the present invention the problems which are now being encountered are effectively solved since:

(1) The replacement rubber blanket or belt eliminates the need for heavy replaceable top rubber press rolls and substitutes in their place replaceable reenforced rubber blanket or belt;

(2) The demounting and the replacement of the rubber blanket or belt is a relatively simple and inexpensive procedure with the top press mechanism of the present invention, thereby eliminating the larger cost of demplunting and remounting heavy rubber covered press ro s;

(3) The expense of shipping heavy rolls to and from the rubber replacement factory is eliminated; and the rubber blanket or belt itself is an expendable item and requires no back and forth shipment;

(4) Since the cost of these blankets or belts is low compared to rubber covered rolls, paper mills may keep more of such blankets or belts in storage to eliminate the possibility of a shutdown due to not having a rubber roll replacement; and

(5) Due to the easy replacement and the low cost of replacement of a rubber blanket or belt, a paper mill can afford to have several hardnesses of belts for each position on its paper making machines, and may change a belt when a run is changed from one type of paper to another.

To the accomplishment of the foregoing objects and such other objects as may hereinafter appear the invention relates to a wringer apparatus for a paper making machine as sought to be defined in the appended claims considered together with the following description of the invention and the accompanying drawings, in which- FIG. 1 is a right side elevational view of the paper making machine wringer apparatus featuring the top press mechanism of the present invention;

FIG. 2 is a front elevational view of the right side of the said apparatus with parts shown in section;

FIG. 3 is an elevational view drawn to an enlarged scale of apparatus parts depicted in FIGS. 1 and 2, showing the mounting for the lower roll and for a set of intermediate rolls of the top press mechanism and the means for moving the lower roll;

FIG. 4 is a plan view drawn to an enlarged scale of apparatus parts depicted in FIGS. 1 and 2, showing the mounting of the set of intermediate rolls of the top press mechanism and the means for moving the same;

FIG. 5 is a view of FIG. 4 shown to a further enlarged scale and taken in cross-section in the plane of the line 55 of FIG. 4;

FIG. 6 is a side elevational diagrammatic view of the rolls and the rubber blanket or belt of the top press mechanism showing these parts in the position for press engagement with the bottom press roll of the wringer apparatus;

FIG. 7 is a view similar to FIG. 6 showing said parts in a position when disengaged from the bottom press roll for removal of an expended blanket or belt or for replacement of a new blanket or belt;

FIG. 8 is a front elevational view, largely diagrammatic, of a complete wringer apparatus when in operation; and

FIG. 9 is a view similar to FIG. 8, depicting the manner of removing an expended rubber blanket or belt or of replacing a new rubber blanket or belt.

Referring now more in detail to the drawings and having reference first to FIGS. 1, 2, 6 and 7 thereof, the wringer apparatus or press roll system of the invention comprises in its essential structural elements a bottom press roll generally designated as 10 and a mating top press mechanism generally designated as 12, between which, as depicted in FIG. 6, a wet carrier 14 (such as a woolen felt) holding in formation a web of paper 16 is adapted to be moved and pressed for expelling water f! om the carrier and paper web.

The top press mechanism 12 comprises an upper roll 18, a lower roll 20, a rubber blanket 22 trained over the upper and lower rolls and preferably a set of intermediate rolls 24 arranged between and engageable with the said upper and lower rolls as best depicted in FIGS. 6 and 7 of the drawings. In the organized apparatus the lower roll 20 is movable relatively to the upper roll 18 in the directions indicated by the arrow 26 (F165. 6 and 7) to effect movement of the lower roll toward and away from the bottom press roll 10 for respectively pressengaging the rubber blanket 22 with (FIG. 6) and disengaging the rubber blanket from press engagement with the bottom press roll 10. The intermediate rolls 24 are movable in the opposite directions indicated by the arrow 28 (see FIGS. 6 and 7) to apply compression between and to the upper and lower rolls 18 and 28 when the parts are moved to the condition shown in FIG. 6 of the drawings and to relieve compression from said upper and lower rolls when the parts are moved to the condition shown in FIG. 7 of the drawings. The rolls 18 and of the top press mechanism are steel rolls; and the lower press roll 10 may be either a steel roll or a hard rubber covered steel roll.

The bottom press roll 10 is mounted for rotation in bearing housings 30 bolted as at 32 to a supporting framework 34 for the apparatus, opposite shaft ends 36 of the bottom press roll being journalled in bearings 38 mounted in the bearing housings.

The upper roll 18 of the top press mechanism 12 is mounted for rotation in the bearing housings 40 (one at each end of the apparatus), each bearing housing being bolted as at 42 to a carriage 44, the opposite shaft ends 46 of the upper roll being journalled in bearings in the bearing housings 40. The carriage 44 at each end of the machine is mounted on a main support 48 fixed in turn to the supporting framework 34; and at one end of the apparatus, such as at the right end best shown in FIG. 1 of the drawings, the carriage 44 is mounted as at 50 for pivotal motion on the said main support 48 for reasons that will appear further hereinafter.

The lower roll 20 is preferably supported on and from the upper roll 18 and more particularly from the shaft ends 46 thereof. The support provided for this purpose comprises for each side of the apparatus, and as best shown in FIG. 3 of the drawings, a block 52 mounted on and hung from a shaft end 46 of the upper roll, to which block is connected (for each side of the apparatus) a bearing 54 for journalling the shaft end 56 of the lower roll 20. The bearing 54 is connected to the block 5-2 by means of rods 58 attached to a bar 60 in turn affixed to rods 62 which movably extend through bores 64 in the block 52 and which in turn are secured to a bar 66 surmounting the block 52.

The means for moving the lower roll 20 in the manner already described is associated with and carried by the support for the lower roll and particularly the block 52 thereof. Such means comprises, for each side of the apparatus, a hand wheel-screw adjusting means generally designated as 68 for elevating and lowering the bar 66 and thereby correspondingly moving the bearings 54 and the lower roll journalled therein. This means 68 comprises more particularly a hand wheel 70 rotatable on a threaded bolt 72 splined at 74 to the block 52, the shaft '76 of said hand wheel being formed with a flanged part 78 engageable with the bar 66 (for lowering the roll 20) and engageable with a flanged ring 80 bolted as at 82 to the bar 66 for elevating the roll 20.

The intermediate rolls 24 are also preferably mounted on the support 52 which is mounted on and depends from the upper roll. To this end the intermediate rolls 24 are carried by a mounting structure generally designated as 84, the opposite ends of which are provided with a floating journal block 86 slidable on the rods 58 connected to said support. Means for moving the intermediate rolls in the manner heretofore referred to (in connection with FIGS. 6 and 7 of the drawings) are carried by the said mounting structure 84.

The mounting structure for the intermediate rolls and the means for moving the same are shown in detail in F165. 4 and 5 of the drawings. A series of rolls 24 spaced along the width of the apparatus alternatingly on opposite sides of a vertical medial plane of the apparatus are each mounted for free rotation on a wedge frame 88, the resulting series of wedge frames 88, 88 being in contiguous relationship, each wedge frame being movable in the directions indicated by the arrow 9% for moving the opposite sets of rolls 24 in the manner heretofore indicated. Each wedge frame fixedly carries a cam block 92 having a cam face 92 Cooperating with the series of cam blocks 92, 92 there is provided a cam member 94 having a series of oppositely directed cam faces 96, 96 engaging the cam faces 82 92 of the successive cam blocks 92, which cam member 94 is slidably movable in the wedge frame 88. Means is provided for slidably moving the cam member 94, such means comprising a threaded rod 98 atfixed as at 100 to the cam member 94, the said threaded rod 98 being in threaded engagement with a hand wheel 1G2 journalled by means of the thrust ball bearings 184 mounted in an end bearing 1% in turn afiixed to the floating journal block 86. With this construction the rotation of the hand wheel 182 slidably moves the cam member 94 thereof, and thereby through the engagement of the cam faces 96 thereof with the cam faces of the cam blocks 92 moves the opposite sets of intermediate rolls 24, 24 into and out of compression engagement with the upper and lower rolls 18 and 26 in the manner heretofore described in connection with FIGS. 6 and 7 of the drawings. Preferably each cam block 92 is mounted on each wedge frame 88 for close adjustment thereon by means of the cam block adjusting screws 108, 108, measuring graduations being provided for cam block location.

The carriage 44 at the right side of the apparatus (FIG. 1) is pivotally mounted at 50 as heretofore described on a main support 48. (The pivotal mounting of the carriage may be incorporated for both sides of the apparatus if desired.) Means is provided for moving the carriage 44 about its pivotal mounting to vary the pressure at the engagement nip of the blanket or belt 22 and such means may comprise an operating rod 112 connected to a lever extension 114 formed with the carriage 44, said operating rod being connectable to a hydraulic cylinder (not shown). To stabilize the mounting for the lower and intermediate rolls the bearing 54 for the lower roll shaft 56 is preferably connected to the carriage 44 by an adjustable linkage 116 (see FIG. 1).

The pivotal mounting for the carriage 44, particularly at the right side of the apparatus, performs another office which is to enable the demounting of an expended rubber blanket or belt from and the mounting of a new rubber blanket or belt on the top press mechanism of the apparatus with facility. This is depicted in FIGS. 8 and 9 of the drawings. FIG. 8 depicts the parts of a complete wringer apparatus (largely in diagrammatic form) when the same is in operation, namely with the rubber blanket or belt 22 of the top press mechanism 12 in press engagement with the bottom roll 1t FIG. 9 shows the condition or position of these parts of the apparatus when an expended blanket is removed from or a new rubber blanket or belt is replaced on the top press mechanism. To accomplish this, referring now to FIG. 1 of the drawings, the upper roll 18 is unbolted, by removing the bolts 42, the linkage 116 is loosened, and the carriage 44 is pivotally moved (about ninety degrees from its position shown in FIG. 1) to a clearing position. The shaft 46 of the upper roll 18 is then received into one end of a tubular member 118, the opposite end ofwhich is raised or lifted by a suspending device 120, and with the lower roll 20 and the intermediate rolls 24 moved to their FIG. 7 position, the rubber blanket 22 may be demounted by being slipped from the position shown in FIG. 7 to that shown in FIG. 9 onto the tubular member 118 as shown in FIG. 9. Similarly in mounting a new blanket, the rubber blanket 24 is placed in position on the tubular member 118, the same being then lifted by the suspending device 120 and thereafter moved into position onto the top press mechanism, after which the carriage 44 is returned to its position for mounting the upper roll.

The use and operation of the press roll system or wringer apparatus of the present invention and the many advantages thereof will be fully apparent from the above detailed description thereof. It will be apparent that changes may be made in the apparatus without departing from the spirit of the invention defined in the following claims.

I claim:

1. A paper making machine wringer apparatus having a bottom press roll and a mating top press mechanism between which a wet carrier holding a Web of paper is adapted to be moved and pressed for expelling water from the carrier and paper web, said top press mechanism comprising an upper roll, a lower roll mounted for movement relatively to the upper roll, a rubber blanket trained over the said upper and lower rolls, means for positively lowering and elevating the lower roll relatively to the upper roll to effect movement of the lower roll toward and away from the bottom press roll for respectively press-engaging the rubber blanket with and disengaging the rubber blanket from the bottom press roll, movement of the lower roll away from the bottom press roll freeing said rubber blanket for removal from said top press mechanism, and means for applying compression between and to the upper and lower rolls when the lower roll is in a press-engaging position with respect to the rubber blanket and to relieve compression from between said upper and lower rolls when the lower roll is in a position for disengaging the rubber blanket.

2. In the paper making machine wringer apparatus of claim 1, a support for journalling the said lower roll, said support being mounted on and hung from the upper roll, the means for moving the lower roll being carried by said support.

3. In the paper making machine wringer apparatus of claim 1, a main framework support, a carriage in which the upper roll is journalled, said carriage being movably mounted on said main support toward and from the bottom press roll and means connected to said carriage for moving the same.

4. The paper making machine wringer apparatus of claim 3, in which said carriage is pivotally mounted on said main support, the carriage being movable about its pivotal mounting away from the upper roll so as to clear said roll journalled therein.

5. In the paper making machine wringer apparatus of claim 3, means for supporting said upper roll independently of said carriage whereby upon a clearing movement of said carriage away from its roll mounting position, removal is permitted of the rubber blanket from the top press mechanism for its replacement.

6. A paper making machine wringer apparatus having a bottom press roll and a mating top press mechanism between which a wet carrier holding a web of paper is to be moved and pressed for expelling water from the carrier and paper web, said top press mechanism comprising an upper roll, a lower roll mounted for movement relatively to the upper roll, intermediate rolls arranged between and engageable with said upper and lower rolls, a rubber blanket trained over the said upper and lower rolls, means for positively lowering and elevating the lower roll relatively to the upper roll to effect movement of the lower roll toward and away from the bottom press roll for respectively press-engaging the rubber blanket with and disengaging the rubber blanket from the bottom press roll, and means for moving the intermediate rolls to apply compression between and to the upper and lower rolls when the lower roll is in a press-engaging position with respect to the rubber blanket and to relieve compression from said upper and lower rolls when the lower roll is in the position for disengaging the rubber blanket, movement of the lower roll and the intermediate rolls away from their press-engagement and compression positions freeing said rubber blanket for removal from said top press mechanism.

7. In the paper making machine wringer apparatus of claim 6, a support mounted on the upper roll, means mounting the lower roll on said support, and means mounting the intermediate rolls on said support.

8. The paper making machine wringer apparatus of claim 7, in which each of said mounting means is movable on said support.

9. In the paper making machine wringer apparatus of claim 6, a support mounted on the upper roll, a bearing mounting the lower roll on said support, the means for moving the lower roll being mounted on said support and being connected to said bearing to move the same.

10. In the paper making machine wringer apparatus of claim 6, a support mounted on the upper roll, means mounting the intermediate rolls on said support, the means for moving the intermediate rolls being carried by said mounting means.

References Cited by the Examiner UNITED STATES PATENTS 412,656 10/1889 ONeill l62-360 FOREIGN PATENTS 1,004,343 4/ 1947 France.

DONALL H. SYLVESTER, Primary Examiner.

J. H. NEWSOME, Assistant Examiner.

Claims (1)

1. A PAPER MAKING MACHINE WRINGER APPARATUS HAVING A BOTTOM PRESS ROLL AND A MATING TOP PRESS MECHANISM BETWEEN WHICH A WET CARRIER HOLDING A WEB OF PAPER IS ADAPTED TO BE MOVED AND PRESSED FOR EXPELLING WATER FROM THE CARRIER AND PAPER WEB, SAID TOP PRESS MECHANISM COMPRISING AN UPPER ROLL, A LOWER ROLL MOUNTED FOR MOVEMENT RELATIVELY TO THE UPPER ROLL, A RUBBER BLANKET TRAINED OVER THE SAID UPPER AND LOWER ROLLS, MEANS FOR POSITIVELY LOWERING AND ELEVATING THE LOWER ROLL RELATIVELY TO THE UPPER ROLL TO EFFECT MOVEMENT OF THE LOWER ROLL TOWARD AND AWAY FROM THE BOTTOM PRESS ROLL FOR RESPECTIVELY PRESS-ENGAGING THE RUBBER BLANKET WITH AND DISENGAGING THE RUBBER BLANKET FROM THE BOTTOM PRESS ROLL, MOVEMENT OF THE LOWER ROLL AWAY FROM THE BOTTOM PRESS ROLL FREEING SAID RUBBER BLANKET FOR REMOVAL FROM SAID TOP PRESS MECHANISM, AND MEANS FOR APPLYING COMPRESSION BETWEEN AND TO THE UPPER AND LOWER ROLLS WHEN THE LOWER ROLL IS IN A PRESS-ENGAGING POSITION WITH RESPECT TO THE RUBBER BLANKET AND TO RELIEVE COMPRESSION FROM BETWEEN SAID UPPER AND LOWER ROLLS WHEN THE LOWER ROLL IS IN A POSITION FOR DISENGAGING THE RUBBER BLANKET.

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