US1939383A - Hydraulic spider revolver - Google Patents

Description

Dec. 12, 1933. BRADLEY ET AL 1,939,383

HYDRAULIC SPIDER REVOLVER Filed Nov. 21, 1931 3 Sheets-Sheet 1 my gm Dec. 12, 1933. A, B. BRADLEY AL 1,939,383

HYDRAULIC SP IDER REVOLVER Filed Nov. 21, 1931 3 Sheets-Sheet. 3

awm'm Patented Dec. 12, 1933 f UNITED -S TAT-E'S- HYDRAULIC SPIDER, REVGLVER Alonzo B. Bradley, New York and IVIarc'el Bonn,

Orangeburg, N., Y as'slgn'ors to The Fibre Conduit Gompany, Orangeburg; N. Y., a corporation of- New York Applicatimr November 21, 1931 Serial No. 576,599 7 is Claims. (or. 93-81) This. invention relates toan apparatus. adapted to revolve a spider-like holder, whereby articles carried by the spider are automatically discharged. from the spider, whenever the spider has revolvedaround a predetermined. angle.

Objects of the present invention are: the pro:- vision of a construction which. will obtain a more definite securing in place of the-spider atv various positions where a loading or unloading takes place; to definitely predetermine and time the stops where the spider has to'haltin its revolution for loading or unloading, or other operations; the provision of meansto revolve shafts or the like for partial turns, and to automatically stop the turning motion at predetermined points and lock the shaft member in that position, and to. auto.- matically release the looks when a new turn of the shaft is desired; the provision of a construction which can be operated with very little power but which generates sufficient power to move those heavy spider-like holders, which require much power for acceleration and revolving; the provision of a novel arrangement for use of ahydraulio rain for operating'the-spider; the provision of. a

novel arrangement of piping. and interposed throttle valves for'definitely controlling the flow of a. hydraulic operating medium and of the speed of a hydraulic rampthe provision of novel means for automatically throwing a hydraulic pilot valve into its rest position after it has been in working position long enough to answer its purpose; the provision of means which automatically throwthe pilot valve of a hydraulic control system intoanother position after it has completed one oper- 35. ating cycle, and to lock it in such position; and

the provision of means to automatically throw the pilot valve of a hydraulic control system into another position afteritjhas completed one operating cycle, to lock it in such position, and to automatically clear the way for i'tsreturn movement into the first position.

Further and other objects of the present invention will be hereinafter set forth in the accomr panying specification and claimsand-IshOwn in the drawings, which by way of illustration show what I now consider; to be a preferred embodiment of the invention.

InJthe drawings-- 7 Figure 1 is a. transverse sectional view of a paper pipe-forming machine equipped with a. spider for supporting and conveying mandrelsr upon whichthe paper tubes are formed and provided on one side with hydraulic operated means,

'55 Figure la is a detail View of. the gage. 1

Figme'Zisa longitudinal front view of thepipeforming machine shown in Figure 1.

Figure 3'shows a face view of the spider revolving. l

Figure 4 is. a. partly sectional and partly side View of part of. the spider revolving, mechanism, particularly on the mechanism for automatically throwing the pilot valve into its fore position.

7 Figure 5 is across-sectional view through the spider revolving mechanism along the lines indicated' by arrows 5-5 on Figure 4 and looking in the direction of these arrows.

Figure 6 is a diagrammatic showing of the pilot valve and piping for controlling the hydraulic rain which supplies the power for revolving thespider.

In Figures 1 and 2, 1 is a tank containing the stock. from which paper pipes or tubes are made. tank is refilled to a certain level from the left, (Figure 1), and the stock flows under and over aiplural'ity of baffles 2 to secure a proper mixing of. the stock. 3 is the mold roll which is coveredlby a sieve. On the inside of this roll, suction ismaintained: by connecting the air spaced of the roll with afan orlow pressure chamber. The mold roll 3' is supported at each' end. bysupport 5 whichis rotatable around pivot 6. The weight of roll 3 and support 5 is counterbalanced by lever 7 and Weight 8. This provides sufficient additional. force to press themold roll against ,the couch roll 9. This couch roll is covered .with felt, inside of which a: low pressure is maintained which holds the paper forming material on the roll. Couchi roll 9 is supported on stationary bearings 10, and is rotated by means of an electric motor or the like (not shown).

On couch roll'9; rests by itsown gravity the-pipeforming mandrel 11, and it is further pressed onto the couch roll by levers 12 and rolls 13, the former being fulcrummed at 14- and weighted by weights 15. An equalizer (not shown) is provided for equally distributing the weights on the two levers 12 arranged at both ends of the forming manare rotatable and loosely supported on the spider shaft 19 (made visible near each end in Figure 2, by cutting away portions of that mandrel 11 which lies in front of it.)

At the moment the paper tube becomes the desired thickness, the spider is revolved 90 in the direction shown by the arrow to convey the tube from forming position a to discharge position b by apparatus described below. During this movement, the mandrel 11 is held in its slots 16 by stationary guides 20 over which the reduced ends of the mandrel roll. The centrifugal force imparted to the forming mandrel while the spider makes one quarter turn makes it roll out of its slot as soon as it leaves the guides 20. The mandrel with finished paper tube then rolls onto a support 21, which may be part of the guide plates 20 and which is provided with a stop 22a. On the right side of the forming machine (Figure 2), the journal end 23 of mandrel 11 rolls into the jaws of the forming roll lifter 22 which is the subject of .our copending application, Serial No. 576,600, Novemberv 21, 1931.

The forming roll or mandrel carrying 'the still wet paper tube, is then slightly lifted upon one side and swung. out on this same side so that the paper tube can be removed. The forming mandrel 11 is then-swung back onto support 21, the jaws of 22 are openedthese formerly effected the lifting up of the mandrel and supported it while the paper tube was removed-and the mandrelreplaced into its slots 16. The ends. 23 of the forming mandrels are of reduced diameter to correspond with the width of theslots 16 in which they rotate, the thus obtained shoulders preventing an axial movement of the mandrels.

While the finished paper tube is being removed and the empty mandrel brought back into its slots, anew mandrel rests on the couch 9 and. a

new paper tube is formed; When this tube reaches the desired wall thickness, as'shown by the gages 18, the spider is again revolved 90 and the new tube brought into position 12 while the first mandrel moves up to position 0, being held in the spider slots by gravity. When the next or third paper tubeis formed, thefirst'mandrel will be in position d and will at the next operation return down to position a and pick up tube-forming stock again. On the way from d to a it is held in its slots by guides 23a. T

Thespider shaft 19 has bearing in end plates 39 adjustable vertically in guides in the machine end frames by nuts and bolts 24 and 24a so as to be able to make tubes of different diameter and/ or wall thickness by the same machine. When the elevation of the spiders is changed, the whole apparatus for revolving the spiders goes withit, all being mounted on one end plate 39. v Figures 3' to 6 illustrate the mechanism for revolving the spider and'stopping it at the positions A, B, C, and D, as described above, to which the present invention especially'relates.

When valve handle 25 of four-wayvalve 29 is in the position shown in Figure 3, water-enters the'hydraulic cylinder 26 at its lower end, and moves the piston 27 and with itthe rack 28 upward. The speed of this movement'can be adjusted by proper setting of'the throttle valve 30. Rack 28 engages'in toothed wheel 31, whichis rotatably mounted on spider shaft 19. Rack 28' .has an extension'32 which carries the rack pawl 33, the face 34 of which engages with the lower. face of lug 35 on lockinglever 36; The rack thus pushes the locking lever 36, which. is fulcrumed at- 37, upward against the tension? of the spring '38. Fulcrum. pin 37 mounted on. endplate 39.

The toothed wheel 31 is loose on the shaft 19.

Attached to the toothed wheel 31 is a ratchetv wheel 40 which has four notches 41, spaced 90 from each other on the circumference of the ratchet wheel. A pawl 42 is attached to a disclike part 43 which is keyed onto the shaft 19. When the piston 27 is in its lowermost position, there is a clearance between the pawl 42 and the notch face 41, and a certain lost motion is available for the upward movement of the rack 28. This'lost motion is sufficient to lift the lever 36 upward and to pull a locking pin 44 out of a notch 45. Four of such notches are arranged on the periphery of the disc member 43, equally such rotation, the locking pin 44 rides on the circumference of the disc 43. The pawl 42 is forced against the ratchet wheel 40 by means of a spring 48 and a piston-like member 49. As soon as the locking pin 44' is out of engagement with the notch 45, a cam 50 on the rack pawl 33 reaches a pin 51, mounted on the end plate 39. At a further upward movement of the rack 28, the rack pawl which is rotatably mounted on the rack by a pin '52, is pushed towards the left, as shown in Figure 3, against resistance of a spring 53. This causesa disengagement of the rack pawl 33 from the lug 35. The lever 36 is now free and the looking pin'44 can drop down into the next notch as. soon as a 90 revolution of the locking disc 43 and the shaft 19 is completed.

Attached to thelocking disc 43 is a cam ring 54 which has four cams 55 equally spaced around its circumference. As a 90 turn of the shaft 19 is completed, the valve 29 is brought into a position to allow the piston 27 to return to its lowermost position .so that it is ready for a new action or turning of the shaft whenever required. The throwing of the valve 29, and handle 25, into this position is accomplished automatically. -'The cam 55 pushes a pin 56 in a guide member 5'7, mounted on the end plate 39. The pin 56 is forced against the tension, of a spring 58 and abuts at its outer end against a notch 59 on the handle 25. At the engagement therefore of cam 55 and pin 56, which occurs when the shaft 19 completes a quarter turn, the handle 25 is thrown downward as indicated by the arrow in Figure 3. A slight movement of the pin 56 is sufficient, the rest of therequired 90. turn of handle 25 being completed by means of the spring 60, so mounted that it tends to throw the handle into either end position and to hold it there.

When the handle 25 hangs vertically downward, the valve 29 is in the position shown on flow diagram Figure 6. The bottom of the cylinder is now connected to the outside air, and the water therein can freely flow away. Pressure water'is admitted to the upper side of the piston 27. In this passage, a throttle valve 61 is inserted, by means ofwhich the speed of the downward movement of the piston can be'adjusted' as isdone by means of valve 30 during the upward movement of the piston. A by-pass 62 is arranged around the valve 61, which is equipped with anon-returnvalve 63. This non-return valve allows a free flow of the operating wateronly'in the direction of the arrow on Figure 6, so thatthere is no hydraulic resistance against an upward movement of the piston, which is its 2'1 and rack28" upward.

power stroke. 'At the downward movement of the piston, where it has no work to do outside of tumingj the toothed wheel .31. with the ratchet 40, the valve 30 creates av certain resistance which secures a smooth movement of thepiston, the rack, etc.

Whenever the operator wants to turn the spider another 90, he pulls the lever 25- upward by hand until its notch abuts against the pin 56, which has been returned by its spring 58 to normal position with its inner end against the circumference of cam ring 54. The lever is then horiaontal, and it is held in this position by,tl1e spring 60. I

We will now recapitulate one complete cycle of operations.

Operation A.-Operator raises handle 2.5- to horizontal, which bring four-way valve 29 to the position which allows admittance of pressure water into the lower end of the'hydraulic cylinder 26. I l

-0peration B.Water goes through four-way valve 29, through throttle valve 30, into the bottom of the hydraulic cylinder, and moves piston OperationCP-Rack pawl 33 engages locking lever lug 35 thereby lifting locking lever 36 and locking pin 44., v

Operation-D.-.-As locking pin 44 clears the slot 45 in locking disc 43,v ratchet wheel 40 and pawl 42 engage and spider l9, 17'starts to revolve.

Operation E.'A's rack 28 continues, tripping cam fio disengages rack pawl 33 from lug 35, allowing locking pin 44 to ride on circumference of locking disc 43, ready to lock.

Operation F.As spider 19, 1'7 nears completion of one-quarter turn, cam plate 54 actuates pin 56,which closesthe four-way valve and valve spring 60 then completes one-quarter turn of valve, and again directs water to the-top of piston through throttle valve 61. Check valve 63 is closed against flow in this direction. Space below the piston is open to the air, and the piston is returned to lower position bringing back with it the rack'28, its pawl 50, gear 31, and notched wheel- 40 to position for the next operation. On power stroke of piston 27, the checkvalve 63 andby-pass allow free exhaust for water, while on piston return, the throttle valves control the speed of rotation, At the completion of the power stroke, four-way valve 29 is automatically returned to the'closed position (closedposition meaning that water pressure is acting on upper side of piston). 7

Although we have shown our invention in this application applied to the operation of a spider for holding the forming rolls of a paper-roll making'machine, it is obvious that our apparatus or partsof it may be used for the operation of a wide range of mechanisms where similar problems have to besolved.

We claim:

1. A conveying apparatus for transporting materials, comprising conveying means to carry the materials, power means for actuating the conveying means, locking means for definitely stopping the conveying means at predetermined stations and intermediary means interposed between said power means and said conveying means for controlling the connection between said power and conveying means to permit free motion of the power means before actuating said conveying means, and means operated by tion for unlocking said locking means.

2. A conveying apparatus for transporting materials, having conveyinglmeansto carry the materials, power means for actuating the conveying means, locking means for definitely stop pingthe conveying means at predetermined stations, and intermediary means interposed between said power -means .and said conveying means for controlling the connection between said power and conveying means to permit free motion of the power meansbefore actuating said conveying means, means operated by said power means during said period of free motion for unlocking said locking means, and means interposed between said power means and said unlocking means for disengaging'the power means from said unlocking means after a preset period of operation of said power means.

3. A-conveying apparatus, conveying means, power means for operating said conveying means, power distributing means for controlling the flow of power to said power means, control means cooperating with said. conveying means and said distributing means, said control means being connected to said distributing means to automatically reverse the flow of power after a predetermined period of operation of said power means, and means for automatically locking said power distributing means after its operation.

4. A conveying apparatus, conveying means, power means to operate said conveying means, power distributing means for controlling the flow of power to said power means, controlmeans cooperating with said conveying means and said distributing means, said control means being connected to said distributing means to automatically reverse the flow of power after a predetermined period of operation of said power means, yielding means for securing the power distributing means in the desiredposition after its actuation by the control means for reversing. the flow of power, said control means for actuating the distributing means having provisions for permitting the operation of the distributing means against the yielding means as soon as the actuating action of the control means is commeans actuated by saidram for disengaging said locking member from said locking disk.

6.'In a tube forming machine having forming rolls for forming the tubes, a spider-like conveying apparatus for holding said forming rolls and transporting said rolls in a circular path, having a hydraulic ram for revolving said spider,

a locking disc having notches spaced around its periphery, a locking member cooperating with said notches for definitely stopping the revolving motion of said spider at predetermined stations and for securely holding'the spider at these stations, a ratchet member attached to said locking disc, a shaft supporting said locking disc and said spider, said locking disc and said spider being keyed to said'shaft and a ratchet wheel being loosely mounted on said shaft, said ratchet wheel cooperating with a rack extending from said ram,

7. In a tube forming machine having forming rolls for forming the tubes, a spider-like con-' veying apparatus for holding said formingsrolls and transporting said rolls in a circular path, having a hydraulic ram for revolving said spider, a locking disc havingnotches spaced around its periphery, a locking member cooperating with said notches for definitely stopping the revolving motion of said spider at predetermined stations and for securely holding the spider at these stations, a ratchet member'attached to said locking disc, a shaft supporting said locking disc and said spider, said locking disc and said spider being keyed to said shaft and a ratchet wheel being. loosely mounted on said shaft, said ratchet wheel cooperating with a rack extending from said ram, clearance being provided betweensaid ratchet member and said ratchet wheel to permit free motion of said rack and said ratchet wheel, a locking lever operating said locking member, -a pawl connected to said rack, to lift the locking lever and the locking member whenever the ram moves for turning said spider, and a pin cooperating with said rack pawl for disengaging the rack pawl from said locking leverto free the locking lever from the rack pawl after a predetermined travel of the ram.

8. In a tube forming machine having forming rolls for forming the tubes, a spider-like conveying apparatus for holding said forming rolls and transporting said rolls in a circular path,

having a hydraulic ram for revolving said spider, a locking disc having notches spaced around its periphery, a locking member cooperating with said notches for definitely stopping the revolving motion of said spider at predetermined stations and for securely holding the spider at these stations, a ratchet member attached to said lock,

ing disc, a shaft supporting said locking disc and said spider,said locking disc and said spider being keyed to said shaft and a ratchet wheel being loosely mounted on said shaft, said ratchet wheel cooperating with a rack extending from said ram, clearancev being provided between said ratchet member and said ratchet wheel to permit free motion of said rack and said ratchet wheel, a locking lever operating said locking member, a lug on said locking lever, a pawl connected to said rack, said pawl cooperating with said lug to lift the locking lever and the locking member whenever the ram moves for turning said spider,

a pin cooperating with said rack pawl for disengaging the rack pawl from said locking lever lug to free the locking leverfrom' the rack pawl after apredetermined travel of the ram,vand a, four-way valve for controlling the flow of water to said hydraulic ram, a handle for operating said valve, a camion said handle, a piston pin cooperating with said cam, a cam ring connected to said locking disc, cams equally spaced around the periphery of said ring, said lastmentioned cams cooperatingwith said piston pin to operate said handle by cooperation of said piston pin with said camon said handle.

9. In a machine of the character described, the combination of a roll-carrying spider, a hydraulic ram for operating the spider, valved control means for said ram, means for lockingthe spider in successive positions, and means actuated by the ram to release the spider from said looking means. v

10. In a machine of the character described, the combination of a roll-carrying spider, a hydraulic ram,a rack operated thereby, a gear operated by said rack and having pawl and" ratchet connection with said spider, hand controlled means for controlling the operation of said ram, spider locking means controlled by said ram, and means actuated by said spider to return said hand controlled means to :normal position.

11. In a machine of the character described, the combination of a roll carrying spider, a hydraulic ram, means actuated by said ram for rotating said spider, a hand-operated valve controlling saidram, a valve setting cam operating with said spider, and means actuated by said setting cam for restoring said hand-operated valve to its normal position.

12. In a machine of the character described, the combination of a roll carrying spider, a hydraulic ram, means actuated by said'ram for rotating said spider, a hand operated valve controlling said ram, locking means normally holding said spider against motion, means actuated by the initial movement of said ram to disengage said locking means and release said spider, said locking means being retained in disengaged position during the 'movement of said spider, and means actuated by said spider for restoring said hand operated valve to its normal position.

13. In a machine of the character described, the combination of a 'roll carrying spider, a hydraulic ram, means actuated by said ram for rotating said spider, meanscontrolling said ram,

locking means normally holding said spider against motion, means actuated by the initial .movement of said ram to disengage said looking means and release said spider, and means retaining said locking means in disengaged position during the movement'of said spider, said spiders-locking means including a locking lever, and said means actuated by the initial movement of said ram including a member for lifting said locking leverto release said spider, and means for disengaging said lever-lifting member.

ALONZO B. BRADLEY. MARCEL BOLIN.

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