US1768676A

US1768676A - Delivery device for presses

Info

Publication number: US1768676A
Application number: US133217A
Authority: US
Inventors: Fred S English
Original assignee: Individual
Current assignee: Individual
Priority date: 1926-09-02
Filing date: 1926-09-02
Publication date: 1930-07-01
Anticipated expiration: 1947-07-01

Description

July}, 1930. F. s. ENGLISH DELIVERY DEVICE FOR PRESSES.

5 Sheets- Sheet 1 Filed Sept. 2, 1926 y 1930- v F. SENGLISH I 1,768,676

DELIVERY DEVI CE- FOR PRESSES Filed Sept. 2, 1926 H 5 Sheets-Sheet 2 ,amventoz July 1, 1930 F. s. ENGLISH DELIVERY DEVICE FOR PRESSBS Filed Sept. 2, 1926 5 Sheqts-Sheef. 3'

July 1, 1930. F. s. ENGLISH DELIVERY DEVICE FOR PRESSES 5 Sheets-Sheet 4 Filed Sept. 2, 1926 July 1, 1930.

F. s. ENGLISH DELIVERY DEVICE FOR PRESSES Filed Sept. 2, 1926 5 Sheets-Sheet 5 FREDSgENGLISH, or NEW iwmeonmcmm V I nst vlsarnnv-iosros ranssrrs ,7 Application med September 2, is as. Serial [1%. 133,217. f I

The present invention relates to delivery dev ces especially "adapted for pr nting presses and cutting and. creasing presses, al-

though the invention mayfbefapplied to any type of machine from which sheets are delivered into apilelh The present invention relates to arlelivery of the type infwhich carrier chains arranged to carry thesheet from the iprin ting or other machine onto a piletableyonsupport. fireferably, the .in-

vention is" employed 'in conjunction with a press having alowe'ringfpile table set ofi at the endofthe'press 'and upon which a large I Y stack of sheets is adapted to be accumulated before the pile is fremoved. One object of the present invention is to provide a delivery device of the abovedescribed character which may be lifted up clear .theiimpr'ession cylinder of the press, inorder'to provideaccessi 3 to the impression cylinder for make ready purposes and to-hgive access tothe form cylinderofthe press, or other mechanisms. Another object isjto provide for the quick displacement ofthedelivery'device for, access to the press and the quick return loft'he same to operative position. Anotherohject isto providei for. the return of the delivery device to operative position with the parts properly timed in relation tothe position o-fthe' impression cylinder of the press. Another object 01 the inventionis to provide a delivery device in which the sheet 'is slowed down in stages from the speed with which it moves upon the impression cylinder in order that ,7 the same may he'appliedto other types of a presses.

In the drawings forming p'art'of'this a I a v 7 ered stepby step as-the sheets are piled thereon, so that the top of the. stack ofsheets ref printingypre'ss and showinglthe invention in operative position,.- k

F gure 2 1s aplan View thereof, a

. Figure 3 is aview similar to Figure 1 .with

. some of the parts omitted -forsimplicity and in this view the deliverydevice is shown liftthe gripperxhars which is carried by the de- C5 the speed of the sheet may he gradually reed to provide access to the working parts of. the press, f Y 1 Figures is a sectional view showingone of iv y ch Figure 5 is affront elevation of the'same, -Figure 6'is a sectional View on a'larger scale or the gripper mechanism with the grippers inopen position, a

iFigure 7 is 'a diagrammatic iview showing the" members on the gears for guiding them to-me r I f Figure 8 'isan elevation of part of the raising andlowering-device, and 1 Figure 9 is a plan view of, the same parts. i {Referring first to Figure "l I have shown t 1 the main side framesjot the press, a portion of the impression cylinder 2, and theipla't'e cylinder-3, .it being understood that the latter ispresent'in this instance because'the device is shown;- applied to a rotary press. At

4: I ha've sliown diagrammatically the series of "rollers for inking the form or plate'onthe V of thedelivery device, At '6 Ihave shown brackets attached to the main supporting rails 7 of the. press for. supporting the central portion of the delivery device; and at 8, 9 andlQ I have shown the members which support the front I end of; the delivery device'and which rest upon thefioor inspaced relation with the end;of the press. The rails 11 are attached to the brackets 6flandi8 andsupport the lowering pile tableQOQ Thelatter is adapted to be low 7 mains at a constant? level and the devices for operating this pile table are well known in the art, andjineed nodetailed description. herein. The sheets areadapted to he delivered 7 unon llthis table from,.above the deliyerymechanism, and the table is l'owered gradually as the sheets accumulate thereon.

mechanism ofthe delivery device which is:

adjacent to the cylinder, and these brackets are braced crosswise of the press by means of rods 14 and 15 which are bolted thereto. These brackets are connected to the longitudinally extending rods or bars 16 which are bolted thereto and the front ends of these 7 bars are bolted to brackets 17 which are pivoted to swing on the shaft 18, the latter extending laterally of the press and being fixed tion shown in Figure 3.

There is a shaft 19 pivoted on the brackets 13 and this shaft carries a series of stripper fingers 20 which serve to strip the sheet from the cylindeiandto guide the forward edge onto the delivery members. These fingers are movedalternately toward and from the impression cylinder 2 by means of a cam 21 arranged on a spindle 22, the latter being geardriven from the shaft of the cylinder 2 through a series of gears 23 and 24 mounted respectively onthe spindle 22 and the shaftv of the impression cylinder. The cam 21 acts on one arm of a bell crank lever 25 and the other arm of this bell crank operates on a lever arm 26 which is fixed to the stripper finger shaft 19, whereby the latter is rocked 'to lower the stripper fingers against the impression cylinder at one moment and to lift these fingers at the time necessary to strip the sheet from thecylinder. As the lever arm 26 rests on the top of the lever 25 it may be lifted freely from it when the delivery mechanism is raised. To prevent the stripper fingers'from dropping too low when this 8 operation takes place, I have provided a stop 27 in the path of the small arm 91 on the shaft 19. I There is a series of wheels 34 supported in the end of the bracket 13 and these run against the surface of the impression cylinder for the purpose of driving the sheet out onto the delivery device after the grippers of the impression cylinder have been opened todeliver the sheet to the stripper fingers.

There is a gear 29- which revolves freely on the stud 28, the latter being mounted in the bracket 5, and this gear meshes with the cylinder gear 30 and it serves to drive the operating parts of the delivery mechanism. At 31 I have shown a rear tape roller extending across the press and running freely in the brackets 13. This tape roller is positively driven from the gear 29 through the inter mediate gears 32 and 33 which mesh with each other and: the former meshes with a gear on the shaft of the roller 31. These gears are so proportioned that the roller 31 is driven at a surface speed less than that of the impression cylinder, so that when the sheet is fully delivered on the tapes, hereinafter described, it will be moving at a slower speed than the impression cylinder. The gear 33 is mounted in position above the gear 29, which permits it to lift freely from the latter when the delivery device is raised. There are endless tapes or belts 36 which travel around the tape roller 31 and also around the tape rollers or wheels which are supported upon the rails 45. These tapes receive the sheet from the stripper fingers 20 and convey it to a point where it is taken by the chain. delivery and, as above set forth, these tapes operate at a lower speed than the peripheral speed of the impression cylinder.

There is a free running shaft 37 extending across the press and j ournaled in the brackets 13. On one end of this shaft there is a gear 38 which meshes with and is driven by the gear 39, which latter is secured to the gear 40 and both revolve freely on a stud 41 which is secured to one of the side brackets'5. The gear 40 meshes with and is driven by the gear 29 previously described, so that both gears 29 and 40 are driven from the impression cylinder gearj On the shaft 37 there is a pair of sprockets 42 located at opposite sides of the press and outside of the path of the sheets,' and. these sprockets are driven through the gear 39 which meshes with the gear 38 on the shaft 37. The chain of gears, including the

gears

29, 40, 39 and 38 are so proportioned that the surface speed of the sprockets 42 is something less than the speed of the tapes 36 and therefore this speed is considerably less than thesu'rface speed of the impression cylinder.

, Near the front end of the delivering device there is'a pair of idler sprockets 44 similar to the sprockets 42 and they are mounted on the shaft 43 invertical planes corresponding with the sprockets 42. The shaft'43 is mounted in the brackets 8 and is subject to ed supporting bars 45 and 47 arranged un- V der the lower runs of these chains and supporting

bars

46 and 48 arranged under and adapted to support the upper runs of these chains. The

bars

45 and 46 are supported by whichexte'ndupwardly over the sheaves 64,

:one end of the shaft.

- is a ratchet disc 74 thewbrackets 4-9 which; are mounted on and carried bythebars'lG', whereas the supporting bars 47 and 48 aretattached to the frame of the machine. p The chains 93 carry several s v ets otgrippers, one 'ofwhich is shown at 50inF1gure 1;1and the detailed construction of these is shown in Figures 4, 5 and 6.

7 These gripper unitsare ot-well known construction and are atpresent used :on chain delivery devices.

Theyflare constructed as follows: There is apair 'of'brackets 51" attached to the links of press, and:

the chains'at opposite sides of the they carry a hired supporting bar or tube 52, as well as anoscillating gripper shaft 53 on which latter the grippers 54 are mounted- The gripper pads-55 are mounted on the tube I 52. and forms. seat torthe' grippers so that the sheet. may be pinched between the face of thegrippers 'and'theseat at the point 56 in Fi ure'G These grippers are'closed upon the sheet to grip it an'dare'opened to release the sheet, by the oscillation oi the shaft 53 which operation is performed through a lever 57, theretracting spring 58 and'the cani roller 59 which-latter iscoperated'on'by the station-f ary cams '60 and 61' arranged, respectiveover the forward edge or the lowering pile table. 7 p

L'There are attached to the brackets 13 at oppositesides ot the press, li-ftingcables 94 ly,over the forward 'end'ot'the tapes 36 and which are 'freely'revolvalile on the shaft 65 extending crosswise of the press and mounted on the top ofthe brackets 5, some distance above the rear end of the delivery device. Fromfthe sheaves 64. these cablesezitend forwardly: and their'gopposite endsare wound onapair of winding drums 66 which are fixed on the shaft 67 arranged crosswise of press and journaled on the brackets 6. On

67 there is 68 over which engages an endless chain 69,

l and the latter also engages around a-sprocket 7 0 which is mounted on a short shaft 71'as shownxin Figures 8 and 9; This shaft is ournaled' inthe brackets 95 bolted to'the side of the brackets 6. On one end of the shaft 71 there is a hand through a clutch torevolve the shaft 71. For holdingthe'rear end of the delivery mechanism' in elevated position, I have provided a ratchet device and brakeas-follows: There fixed to the shaft 71, and there is ashell or brake drum 7 5 surrounding this disc. In'thenotches 76 of the disc 74 thereare rolls 77 pressed in one direction by the spring78 (only one of which is shown) and these rolls grip the shell in one direction and release the same in the opposite direction, this type of clutch being well known .in the" art. brake shoes '79 pivoted at the. point 80 and engaging a sprocket gear 39 and the'latter of crank 72 which operates There is a pair of atopposite sides 011 the;

outer surface of the brake :drum- 75. These by means offa spring 81, the tension: of which may be ladjuste'dby thebolt 82. v The mechanism just described allows the hand crank. shaft. 71 and freelywhen-One endof'the delivery device is being raised. vVhenjthe delivery device .is raised theibrake, acting on the member .75 holds the delivery device in raised position and when it is desiredto lower the delivery device the hand crank 72 may be turned by exerting just'en-ough force to overcomefthe gripping action of the brake which, as above pointed out,.maybeadjusted by the spring 81 and bolt 82. v l Vhen the delivery device is lifted, the driving gears 38 and 39 disengage or, are thrown out of mesh and itis necessarythat these be brought into mesh *at :such point when the delivery device is lowered, in order thatthc grippers on the chains may be prop erly timed in -relation to t-he delivery of the sheets. F or thispurpose I providea pointer 83 attached to the gear 23, and there is a co-operating pointer 84 fixed'to a stationary part of the press, wherebytheangular displacement oi the shaft 22 maybe determined accordin to the register of the poi-nter's'83 and 8 1. There is also a pointer 85 arranged; upon the stationary bar 46 andthis-co-opcrates with the pointer 86 one one of the delivery chains, in orderthat the; position of these chains may be regulated for the proper return of the delivery device to active position. The several pointers are sufficient for roughly gauging the position of the severalparts, but I prefer to provide means torreturning the several gears into accurate mesh ing engagement. For this purpose I have arranged extra

long teeth

87 and 88, the former of which is fixed in the outside of the which is fixed on the outside otthe gear 38, These extra teeth are located at thecorrect distance apartand opposite the'regular teeth 'otthe respective gears as shown in Figure 7, sothat when these extra teeth are in contact and the pointers 83 and 84 are'approxiinately in registeni'lthe" gears 38 and 39 will accurately"mesh with each other when'fthe' delivery device (is lowered. I Q Q Operation the impression cylinl the sprocket 70' to turn these tapes travel to the left in Figure 1 at a speed lessthan the peripheral speed of the cylinder, so: thatthe sheet is slowed down somewhat when'inoved onto these-tapes. The

- lowered until the teeth are nearly 111 mesh; and the shaft 37 1s turned until the leading crank 72 is reversed fingers is carried forwardly. on the tapes 36 edge of the sheet comes to the gripper mechanism 50 and as the chains 93. are travelling at a lower speed than the tapes 36, the forward edge of the sheet is moved up against the abutments 62 of the ripper pads. The grippers 54; then close sheet the cam 60. The sheet is now carried forwardly by the gripper devices 50 on the travelling chains until the sheet is moved to.

a position over the lowering pile table and until the roller 59 is acted upon by the stationary cam. 61 to open the grippers which will allow the sheet to fall upon the pile table.

When it is desired to have access to the im ression cylinder or the plate cylinder or inking device, the rear end of the delivery mechanism may be raised as shown in Figure 3, in which case this entire section of the delivery mechanism will swing from the shaft 18. This lifting of part of the delivery mechanism is eii'ected by turning the hand crank 7 2 and'the motion is transmitted by the sprocket through the chain 69 to the sprocket 68. The drum 66 winds up the cables 94 andthese serve to lift the rear end of the delivery mechanism into the position shown in Figure 3. There will now be sufficient space at the forward end of the press to permit the operator to get at the impression or form cylinders, or the inking mechanism. To lower the delivery device, the and only enough force is required to release the clutch rolls 77.

When the delivery device is about to be lowered intooperative position, the press is turned until the pointers 83 and Set are approximately in register, then the hand wheel 89, which is fixed on the shaft 37, is turned until the pointers 85 and 86 are approximately in register. The delivery device is then of the

gears

88 and 39 slightly until the guiding

teeth

87 and 88 are in contact, whereupon the delivery device maybe completely lowered. The teeth of thegears 38 and 39will now accurately register and the gripper devices 50 of the chains will be properly timed in relation to the delivery of the sheets from the impression cylinder 2;

Having, described my invention, what I claim is 1. The combination with a press having a sheet carrying cylinder, a delivery device pivotally' supported to be swung in relation to said cylinder, said delivery device includingstripperrfingers cooperating with said cylinder, means for operating said stripper H from said cylinder, and means movable with said delivery device and co-operating with said operating means when thedelivery device, is in operative position and on the sheet asthe rolls'59 disengage from adapted to freely disengage from said operating means when the delivery device is lifted away from said cylinder.-

2. The combination with a press having a sheet carrying cylinder, aclever operated from said cylinder, a sheet delivery device for receiving the sheets from said cylinder and pivotally mounted whereby the end of said delivery device adjacent the cylinder may be swung away from said cylinder, said delivery device carrying stripper fingers, and operating means co-operating with said lever when the delivery device is in active position and adapted to disengage from said lever when the delivery device is raised.

3. The combination with a press having a sheet carrying cylinder, a delivery device for receiving the sheets fromsaid cylinder and pivotally mounted whereby the end adjacent said cylinder may be swung out of position, stripper fingers, a stripper finger shaft and an arm mounted on said shaft, said fingers, shaft and arm being carried by said delivery device, and means for operating'said arm and from which said arm is adapted to freely disengage when the delivery device is raised.

The combination with a press having a sheet carrying cylinder, adelivery device pivotally mounted Whereby'one end may be swung away from fingers for co-acting with'said cylinder and mounted on said delivery device, and co-opcrating parts for operating said stripper fingers and adapted to freely disengage from each other-when the said delivery device is moved into inoperative position.

5. Thecombination with a press having a sheet carrying cylinder, a delivery device pivotally mounted whereby one end may be swung away from said cylinder, stripper fingers for co-acting with said cylinder and mounted on said delivery device, and co-operating parts for operating said stripper fingers from said cylinder, and adapted to freely disengage from each other when the delivery device ismovedinto inoperative position.

6. The combination with a press havinga sheet carrying cylinder, a stationary member, a sheet delivery device including traveling supports, one of which is provided with grippers for engaging the leading edge of the sheets, a portion of said delivery device pivotally supported to be moved toward and from said cylinder, a gear mounted on said stationary member, a gear mounted on said delivery device and co-acting with said first gear and auxiliary teeth on said gears for guiding said gears into mesh at a predetermined point when vthe delivery device is moved towards said cylinder to bring said grippers into correct timing relation to said cylinder.

7. The combination with a press having a sheet carrying cylinder, a stationary member, a sheet delivery device including sheet con veying members, one of which is provided long tooth mounted on each of said gears andco-operating with each other to'guide said gears'into mesh when the delivery device is swung into operative position to bring said grippers into proper timing relation to said cylinder. r

' 8. The combination with a press having a' sheet carrying cylinder, a delivery device adapted to be moved into and out of operative relation w1th sa1d cylinder sheet convey-v ing means having grippers to gripthe leading edge of the sheet, a timing indicator associated with said cylinder, and a co-operating timing indicator associated with'said delivery device by which the relative positions ofsaid cylinder and the delivery mechanism may be determined when the deliverydevice is to be moved into active positionto effect the correct timing relation of said grippers to said cylinder.

9. The combination with the press having asheet carrying'cylinder, a sheet delivery device adapted to be moved toward and from said cylinder, sheet conveying means having grippers to grip the leading edge of the sheet, a pair of timing indicators associated with said cylinder fordetermining the position thereof, and a pair of timing indicators associated with said delivery device for determining the position thereof in relation to the position of said cylinder to eiiect the correct timing relation of said grippers to said cylinder. v

10. The combination with a press having a sheet carrying cylinder, a sheet delivery device adapted to be moved toward and from said cylinder, sheetconveyingmeans having grippers to grip the leading edge of the sheet, co-operating members adapted to operate said delivery device when in operative relation with said cylinder and adapted to be separated when said delivery device is moved out of operative position, and co-acting inclicators for determining the relative positions of said co-operating members to effect the correct timing relation of said grippers to said cylinder.

11. The combination withfla press having a sheet carrying cylinder, a sheet delivery device adapted to be moved toward and from said cylinder, sheet conveying means having grippers to grip the leading edge of the sheet,

andco-acting indicators associated with said cylinder and with said delivery device, re-

spectively to effect the correct timing relation of said grippers to said cylinder. v

12. The combination with a press having a sheet carrying cylinder, a delivery device pivotally mounted to'swing'toward and from grippers to grip the leading edge of the sheet,

disengageable means for driving the operative parts of the delivery device from said cylinder, and co-vacting indicators for indicating the relative positions of said cylinder and the delivery device when-the'delivery device is to be returned into active relation ith said cylinder to efiect the correct timing relation of said grippers to said cylinder.

13. The combination with a press having a sheet carrying cylinder, a pivoted delivery device for receiving the sheets from said cylinder, sheet conveying means having grippers to grip the leading edge of the sheet, gears for transmitting the operativeforce from said cylinder to said delivery device, said gears being adapted to be disengaged when said delivery device is swung out of active position, indicators for determining the relative positions of said cylinder and the deliverydevice, an auxiliary tooth on a plurality of said gears for guiding'them into register a sheet carrying cylinder, 2. sheet delivery device pivotally supported to be swung in relation to said cylinder, and including sheet carrying means and means for manually positioning said sheet carrying means preparatory to sa1d sheet device being returned lnto active relation with said cylinder.

15. The combination with a press having a sheet carrying cylinder, a pivotally mounted sheet delivery device for receiving sheets from said cylinder, flexible means for lifting one end of said delivery device, a winding drum for operating said flexible lifting means and a brake for said drum.

16. The combinationwith a press having a sheet carrylng cylinder, a sheet delivery device pivotally mounted to swing toward and from sa1d cyl nder, fiexlble means for liftmg sa1d delivery device, a winding drum when said delivery device is returned to acf for said flexible means and a brake co-acting with said drum and operative only during the lowering action of said delivery device.

17. The combination with a press having a sheet carrying cylinder, a sheet. delivery device pivotally mountedto swing toward and from said cylinder, a flexible member for lifting said delivery device, a winding drum, a ratchet devlce, and a brake acting on sa1d drum through said ratchet device whereby said brake is effective during the lowering operation of said delivery device.

Signed at New London, county of New London and State of Connecticut, this27th day of August, 1926.

FRED s. ENGLISH.