Патент USA US2112078код для вставки
Ma_rch 22, 1938. 2,112,078 H. N. DURHAM PRINTING PRESS Filed May 9_, 1935 . A TTORNEYS. a‘ scented ‘ UNITED STATES [PATENT OFFICE 2,112,078 PRINTING PRESS Hobart N. Durham, Munsey Park, t, .N. ’Y., assignor to The Goss Printing-Press _ Company, Chicago, 111., a corporation of Im nois . Application May‘9, 1935, Serial No. 20,583 21 Claims. (Cl- 270-68) The present invention relates to printing rollers are driven at a peripheral speed slightly presses and more particularly to a novel and im in excess of the peripheral speed of the folding proved rotary folding mechanism adapted for cylinder, so that when the lead end of the webs use with high speed newspaper presses. or sheets is stopped, the body of the webs or Objects and advantages of the invention will sheets continues to move forward, buckles and be set forth in part hereinafter and in part will the sheets are fed into the bite of the folding be obvious herefrom,ior may be learned by prac o?’ rollers which removes them from the cylinder tice with the invention, the same being realized and moves them toward suitable delivery mecha and attained by means of the instrumentalities nism. In order to. facilitate buckling of the 10 and combinations pointed out in the appended sheets air is introduced between the cylinder and ‘ claims. the collected sheets at and adjacent to the pro The invention consists in the novel parts, con posed folding line, and in addition, the sheets are struction, arrangements, combinations and im preferably creased mid-way of their length, that provements herein shown and described. is, along the proposed fold line. _ 15 The accompanying drawing, referred to herein It will be understood that the foregoing gen; 15 and constituting a part hereof, illustrates one eral description and the following detailed de embodiment of the invention, and together with scription as well, are exemplary and explanatory the description, serves to explain the principles of of the invention but are not restrictive thereof. the invention. 20 ' The single ?gure of'the drawing is a diagram matic sectional view of an illustrative folding mechanism in accordance with the present inven tion. ‘ The present invention has for its object the provision of a novel and improved high speed ro tary folding mechanism which is particularly adapted for use with high speed rotary newspa per presses. A further object of the ‘invention is the provision of a, simpli?ed rotary. folding mech 30 anism having fewer operating parts and which is less expensive in its construction than those , now generally employed. Still another object 'of ‘ the invention is the provision of a high speed rotary folding mechanism in which the tucking 35 blade, heretofore almost universally used, is ren dered unnecessary, and which mechanism may Referring now in detail to the illustrative em~ bodiment of the present invention, as shown in the accompanying drawing, there is provided a folding cylinder l0 substantially two sheet lengths in circumference, and a closelyv adjacent cutting cylinder H driven at the same peripheral speed as the folding cylinder and of an integral number of - sheet lengths in circumference. The longitudinally folded, and if desired slit, web or associated webs l2 are drawn downwardly‘ by the drawing rolls 13 so that‘ they are fed. to the point of contact between the cylinders l0 and II, at substantially the same speed as the peripheral speed of these cylinders. Cutting cylinder H is provided with a radially projecting blade iii of conventional construction adapted to seat within the female cutting blocks 35 "5 mounted on folding cylinder l0 and which are operate on webs or sheets. spaced a ‘sheet length apart as measured on the In accordance with the illustrative embodiment of the present invention, there is provided a. fold circumference of the folding cylinder l0. Means are preferably provided for introducing for main taining air between cylinder l0 and the sheets along and adjacent to the proposed fold line, and said means are likewise also utilized for creasing the sheets along the proposed fold line. Accord ingly a blade I4’ is made to project slightly from the periphery of cylinder l0 along the proposed fold line, and would act by itself to hold the sheets slightly away from the cylinder and admit the 40 ing cylinder and cooperating cutting cylinders between which the web or associated webs is cut into sheet lengths, and the folding cylinder is provided with means for taking the lead end of the web and holding it for a portion of a revolu tion againstthe surface of the folding cylinder. Means are provided for releasing the holding means and for stopping the lead end of the as sociated webs while the body of the associated air along either side thereof beneath the sheets. . webs continues to feed in the direction of travel The mechanism is also adapted to crease the of the cylinder. Other means are provided for sheet along the proposed fold line, and accord holding the associated webs substantially to the ingly cylinder H is also provided with a creasing 50 shape of the folding cylinder throughout the major portion of the length of'thesheets to be cut therefrom and except for a small distance adjacent to a pair of folding-off rollers. These groove l4 to‘cooperate with creasing blade I4’ ?xed to the cylinder Ill. Groove l4 and blade W are spaced from the blade l5 and block l6 one-half sheet length. ' 55 2,112,078 2 The sheet taking means on the folding cylinder ID, for taking the leading and of the web or as In the operation of the illustrative embodi ment of the invention, the associated webs l2 sociated webs, comprise axially alined series of impaling pins i3 vcarried by arms l3 mounted on pin shafts 20 which are rotatably iournalled in the folding cylinder l0. At one end of each shaft folded or slit and are fed towards the point of cutting by means of the drawing rollers I3, the have been printed, associated, longitudinally speed of the webs if being substantially the same 20 is provided an arm 2| carrying cam roller 22 as the peripheral speed of the cylinders l0 and I i. which runs in the cam track 23 of a stationary The associated webs I! are cut by cutting knife I! and the lead end of the web is impaled by the pin actuating cam 24, fixed to and anguiarly ad- > pins 13 immediately above the point of cutting. 10 10 Justable on the folder frame so that the timing As the folding cylinder in continues to rotate, of the pins may be varied. , Means are provided for conforming the paper the lead end of the web is moved in a clockwise to the cylindrical shape of the folding cylinders direction, the sheets are creased along the line ill, and as embodied, comprise series of relatively where they are to be folded, and when the lead narrow spaced-apart sheet guides having curved end of the web is immediately below the stop 4i, 15 inner faces which are positioned concentrically cam 23 withdraws the impaling pins l8, thereby with respect to the folding cylinder I0. Sheet freeing the lead end of the associated webs 12. guides 30 and 3i are mounted on a supporting The portion of the webs between the stop 4i and shaft 32 while sheet guides 33, 34, and 34' are the cutting cylinders ll continues to travel by 20 reason of the inertia of the paper, and the con 20 mounted on their supporting shafts 33 and 35'. tinued feeding of the webs by the cutting cylinder These guides are preferably held in the position II by its pressing the webs against the folding shown in Figure 1 during the operation of the press by set screws or other suitable means. Guides 33, 34, and 34' extend from a point 25 closely adjacent to the point of cutting and between the folding cylinder in and cutting cyl inder II to a point above folding roller 33, and folding roller 36 is provided with circumferential grooves to receive the ends of guides 34'. The 30 ends of guides 3| are similarly received within circumferential grooves on the folding roller 31. Folding rollers 36 and 31 are rotatably mounted closely adjacent to the lower part of the fold ing cylinder in and are yieldingly mounted and 35 resiliently urged towards' each other so as to tightly grip and feed the folded sheets as the sheets are folded oil from the cylinder by these rollers. Rollers 36 and 31 are driven at a periph eral speed slightly in excess of that of the fold 40 ing cylinder l0, and roller 33 is driven in the op posite angular direction to cylinder ill, while roller 31 is driven in the same angular direction as folding cylinder i0. At the point of contact between rollers 33 and 31 the rollers are travelling 45 in the same peripheral direction. Means are provided for stopping the lead end of the sheet or associated sheets at a point be yond the folding rollers 33 and 31 and almost a half sheet length from these rollers. For this 50 purpose, stop 4| may be mounted at the upper ends of sheet guides 30 and is directed inwardly towards the cylinder surface and closely adja cent thereto, being spaced however to permit passage of the creasing blades i4’. Means are also provided for lifting the asso ciated sheets from the impaling pins I 3 and for this purpose small bifurcated ?ngers 33 overlie the pins H, are pivoted on the cylinder and con nected to pin arms l3 by links 33. As the pins 60 it are retracted, the ?ngers 33 are lifted pro 55 jecting the lead end of the sheets against stop 4|. If desired, means may be provided beyond the cutting cylinder H for forwarding the sheets after the lead end of the sheets has been released 65 by the impaling pins l3, and for this purpose axially alined sections of a feed roller 42 are ro tatably mounted and yieldingly pressed towards the surface of the folding cylinder l0, rollers 42 being positioned between the cutting cylinder Ii 70 and the-folding roller 33. The spaced guides 34 may be positioned between the several sections of the feed roller 4!. Roller 42 is also recessed to cooperate with creasing blades 14', is pref erably a half page in circumference and is driven 76 at paper speed from the cylinder I3. cylinder l0. During this time, the webs are con fined against the surface of the folding cylinder and held substantially concentric therewith by 25 means of the inner curved surfaces of the spaced apart guides 30, 3|, 33, and 34. When the lead end of the web comes to rest against the stop 4|, the associated webs are cir cumferentially compressed, that is, lengthwise 30 of the webs, and the webs being already creased and in a curved form, tend to move radially of the folding cylinder i0 under the influence of the longitudinal inertia compression of the webs as well as due to the centrifugal force developed by the mass and angular movement of the webs. This action causes the sheet to buckle exactly at its mid-portion and transversely of the web, as shown at 45, this buckle occurring im mediately above the bite of the folding rollers 40 38 and 31. As the buckle 45 enlarges, the outer surface of the webs engages the surface of fold ing rollers 36 and 31, causing the buckle to be fed between the rollers, thereby folding and creasing the sheets. By properly positioning the the stop 4i, substantially in the position shown in Figure 1, the line of transverse fold can be positioned accurately midway between the ends of the sheet. Approximately at the time the line of fold 45 is ?rmly gripped between the folding 50 rollers 36 and 31, the webs are cut by the blade [5, thereby severing the folded sheets from the web and forming a new lead end of the web which is impaled by the next set of impaling pins i3. Continued rotation of the folding rollers 36 and 31 causes the forward half of the sheet to be reversely fed while the trailing half of the sheet continues to feed in the same direction, and the folded group of associated sheets is fed from Li the folding cylinder I0 between the folding rollers 36 and 31 and is thereby conveyed to suitable delivery mechanism (not shown) . - The invention in its broader aspects is not limited to the speci?c mechanism shown and de scribed but departures may be made therefrom 65 within the scope of the accompanying claims without departing from the principles of the in vention and without sacri?cing its chief ad vantages. What I claim is:- 1. A high speed rotary folding mechanism in cluding in combination a sheet carrying cylinder, sheet taking means mounted on said cylinder, a pair of folding-off rollers, and means-for buck ling a plurality of sheets from said cylinder in 70 3 2,119,078 cluding a positive stop engaging the forward ends means for projecting the sheets into of the sheets. said stop. " > 2. A high speed rotary folding mechanism in the path of ‘ / 11. A high speed rotary folding mechanism in cluding in combination means for cutting sheets cluding in combination a sheet carrying cylinder, from a group of associated webs, a sheet carrying sheet taking means mounted on said cylinder, a cylinder, a pair of folding-off rollers, sheet con ‘ pair, of folding-off rollers, means for feeding ?ning means adjacent to said cylinder, continu sheets to said cylinder and means separate from ously acting means for forwarding said sheets be ‘ tween said cylinder and con?ningmeans, and 10 means projectinginto the-pathway of said sheets, folding-oil.’ rollers for stopping angular advance of the portion of the sheets in advance of the folding rollers and means for continuing the 10’ beyond the folding-off rollers to stop the angular movement of that portion of the sheets on the - movements of said sheets. other side of the folding rollers. 3. A high speed rotary folding mechanism in ' 12. A high speed rotary folding mechanism in Cal» cluding in combination means for cutting sheets ' cluding in combination asheet carrying cylinder, ‘ _ 15 from webs, a sheet carrying cylinder, a pair of sheet taking means mounted on said cylinder, a 16 folding-oil’ rollers, sheet con?ning means ad.1a— cent to said cylinder, continuously acting means for forwarding sheets between said cylinder and con?ning means and a stop projecting into the pathway of said sheets to stop the angular ad vance thereof; said stops being positioned beyond said folding-o?’ rollers. , ‘Y 4. A high speed rotary folding mechanism in cluding in combination means for cutting a sheet from a web, a sheet carrying cylinder, a pair of folding-off rollers, sheet con?ning means adja cent to said cylinder, continuously acting means ‘for forwarding a sheet on said cylinder, and a stop projecting into the path of the sheet beyond the folding-on rollers to stop the angular ad vance thereof. 5. A high speed rotary folding mechanism in cluding in combination a sheet carrying cylinder, a pair of folding-oil’ rollers, sheet confining means adjacent to said cylinder, a cutting cylinder coop‘ '40 erating with the folding cylinder, a roller pressing the sheet against the cylinder to forward the sheet and a stop beyond the folding rollers for arresting angular advance of a sheet. 6. A high speed rotary folding mechanism in— cluding in combination a sheet carrying cylinder, pair of folding-oil’ rollers, means ‘for feeding sheets to said cylinder and means separate from said sheet carrying cylinder and folding-oil’ roll- . ers for stopping angular advance of ‘the portion of the sheets in advance of the folding ‘rollers and 20 means for continuing the movement of that por tion of the sheets on the other side of the folding rollers. _ , 13. A rotary folding mechanism including in combination'a sheet carrying cylinder, sheet tak 25 ing means thereon, a pair of folding-oil’ rollers, means for stopping the front half of a sheet or sheets on said cylinder while the sheets are free from said folding-off rollers to buckle the center of the sheet and bring the buckle into the bite of 80 the folding-off rollers. 14. A rotary folding mechanism including in combination a sheet, collecting cylinder, sheet collecting means thereon, a pair‘of folding-off rollers, and means for engaging and stopping the front half of all the collected sheets to buckle the center of the group into the bite of the fold ing-off rollers. 15. A rotary folding mechanism including in combination a sheet collecting cylinder, sheet 40 collecting means thereon, a pair of folding-offv a pair of folding-o? rollers, sheet confining means , rollers, and a stop engaging the front end of all adjacent to said cylinder, a cutting cylinder co operating with the folding cylinder, sheet taking means on said carrying cylinder, a roller pressing the collected sheets to buckle the center of the group into the bite of the folding-off rollers. 16. A rotary folding mechanism including in 45 combination a sheet carrying cylinder, folding-off rollers, sheet con?ning means spaced from and concentric with. said cylinder and extending from the'sheet against the cylinder to forward the sheet and a stop at the end‘ of' the con?ning means for arresting angular advance of a sheet. '7. A rotary buckling folder including in combi said folding-off rollers toward the lead end of a nation a folding cylinder, sheet guides concentric sheet on the cylinder and means for buckling the therewith, folding-off rollers, a cutting cylinder, - center part of the sheet into the bite of said fold sheet taking means on said folding cylinder, actu ing rollers including means-for stopping the lea ating means therefor to release the lead end of half of said sheet. ' sheets prior to cutting at their rear end, and a 17. A rotary folding mechanism including in sheet stop positioned less than a semi-circum combination a sheet carrying cylinder, folding-off 55 ference of said cutting cylinder from the sheet , rollers and means for buckling the central part cutting means. ‘ of said sheet into the bite of the folding-oif-roll 8. A high speed rotary folding mechanism in ers comprising a stop for the front half of the cluding in combination a sheet carrying cylinder, sheet andv means for con?ning the sheet spaced 60 ‘sheet taking means mounted on vsaid cylinder, from said cylinder between the folding rollers‘ 60 means for creasing a sheet on said cylinder, a pair of fold-off rollers and means for buckling a sheet ' and the head of the sheet. ’ 18. A rotary folding mechanism including in from said cylinder and folding it along the crease. combination two coacting cylinders, a web supply, 9. A rotary buckling folder including in com .impaling pins on one of said cylinders, cooperat ing sheet cutting devices on said cylinders, means 65 bination a folding cylinder, sheet guides concen for creasing sheets medianly and transversely, a tric therewith, folding-oi! rollers, a cutting cylin der, sheet taking means on the folding cylinder, pair of folding-01f rollers, sheet con?ning means a sheet creasing blade on the folding cylinder, located in advance of said folding-off rollers, and and a sheet stop for buckling a sheet 'along the means for stopping the forward half of sheets upon the cylinder to buckle the crease into the 70 crease and between the rollers. bite of the folding rollers. ' 10. A rotary folder including in combination a - 19. A high speed rotary folding mechanism in ,_folding cylinder, sheet guides concentric there cluding in combination a sheet carrying cylinder, ;?§if,ffold-p? rollers, sheet forwarding means, a sheet taking means mounted on said cylinder, ‘tjwtope against which the sheets are moved and . means for maintaining air between said cylinder 75 2, 12,07@ - and a sheet thereon across a limited median part of the sheet, a pair of folding-oi! rollers, and means for buckling a plurality of sheets from said cylinder. I 20. A rotary folding mechanism including in combination a sheet carrying cylinder, sheet tak ing means thereon, a pair oi.’ folding-oi rollers. means for stopping the front half of a sheet or sheets on said cylinder while the sheets are free 10 from said folding-of! rollers to buckle the center 0! the sheet and bring the buckle into the bite of the folding-of! rollers, and means for main taining air between the cylinder and sheet at said buckling and iolding-o? locus. 21. In a rotary buckling folder, a folding cylin der, folding-of! rollers, a curved stationary sheet guide concentric with said folding. cylinder, a roll er pressing the sheet against the cylinder to for ward the sheet and a stop projecting into the space between the guide and cylinder to arrest angular advance of a sheet. HOBART N. DURHAM.