Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.

Patents

  1. Advanced Patent Search
Publication numberUS2172361 A
Publication typeGrant
Publication dateSep 12, 1939
Filing dateNov 27, 1937
Priority dateNov 27, 1937
Publication numberUS 2172361 A, US 2172361A, US-A-2172361, US2172361 A, US2172361A
InventorsClauberg Herman P
Original AssigneeHoe & Co R
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Folding mechanism for printing machines
US 2172361 A
Abstract  available in
Images(3)
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

Sept. 12, 1939. H. P. CLAUBERG FOLDING MECHANISM FOR PRINTING MACHINES 3 Sheets-Sheet l Filed Nov. 27, 1937 INVENTOR.

Sept. 12, 1939. H. P. CLAUBE RG FOLDING MECHANISM FOR PRINTING MACHINES Filed Nov. 2'7, 1937 s Sheets-Sheet 2 IN'VENTOR. Adwjf-ay A Patented Sept. 12, 1939 UNITED STATES PATENT OFFiCE FOLDING MECHANISM FOR PRINTIN MACHINES Application November 27, 1937, Serial No. 176,786

14 Glaims.

This invention relates to sheet folding mechanism for a printing or like machineoperating upon a web, and more particularly to an improved folding mechanism adapted for use with 5 such a machine, to permit rapid operation of the machine without interfering with the efiicient operation of the folding mechanism.

Sheets, cut from a web being acted upon by a printing machine, are generally folded one or more times before delivery. When the sheets are first cut and later given a longitudinal fold, the fold is usually made by a chopper type folder. This form of folding mechanism has very desirable characteristics but it cannot be operated satisfactorily at very high speeds, and in consequence, printing machines having such folders must be operated at slower speeds than that at which high quality printing can be done. To obviate this disadvantageous condition, a double folder and delivery for the products is herein disclosed, wherein each half of the products being delivered by the machine, will be directed to a separate folding mechanism of the chopper type, which may be run at its most efficient speed, while the printing portion of the machine is operated at its normal relatively high speed. This requires slowing down the products as they are being forwarded to the longitudinal folding mechanism, and means is hereinshown arranged for this purpose.

At times, several cut products are collected before being forwarded to the longitudinal folding mechanism, and as the time interval during such collection is sufiicient to permit the efficient operation of the folding mechanism, a double delivery arrangement is not required. It is desirable however that all products be slowed down as they are forwarded to a folding mechanism of the chopper type if the printing is done at a high speed.

An object of this invention is to provide a folding mechanism for a printing or like machine operating upon a web, wherein means is provided to forward the products of the machine to separate folding members and whereby a limitation in speed of the machine is not required, in order to permit the efiicient operation of the folding mechanism.

Another object is to provide in a folding mechanism, separate folding means to which products of a printing or like machine are alternately delivered, and means to reduce the speed of the products before they are received by said folding means.

A further object is to provide in a folding mechanism, means to reduce the feeding speed of products being forwarded from a printing or like machine, before they are received by the folding means of the mechanism.

It is also an object of this invention to provide a sheet folding device of generally improved construction, whereby the device will be simple, durable and inexpensive in construction, as well as convenient, practical, serviceable and efficient in its use.

With the foregoing and other objects in view, which will appear as the description proceeds, the invention resides in the combination and arrangement of parts, and in the details of construction hereinafter described and claimed.

The preferred embodiments of the invention are illustrated in the accompanying drawings, wherein:

Figure 1 is a side elevational view of a portion of a printing machine disclosing an improved folding mechanism adapted to form products with open heads and embodying the features and principles of this invention;

Figure 2 is a side elevational view of a portion of a printing machine disclosing a similar improved folding mechanism but which is arranged to form products with closed heads;

Figures 3 and 4 are views of folded products produced by the folding mechanism shown in Figure 1; and

Figures 5 and 6 are views of folded products produced by the folding mechanism shown in Figure 2.

Referring now to Figure l, the portion of the printing machine adapted to operate upon a web or webs is shown as including suitably associated web guiding rolls IE and II adapted and arranged to associate a plurality of webs that may have previously been printed upon by the machine, and direct them between a pair of cutting cylinders !2 and I3 which have cooperating web cutting devices it and 15 adapted to cut the webs into groups of sheets called cut-offs. One of the cylinders I3, is provided with suitable sheet engaging members, such as pins it, to engage the leading edges of the webs after each group of sheets is cut and carry them about the cylinder l3 and between it and a collecting cylinder IT. The collecting cylinder I? is herein shown provided with a plurality of sets of sheet engaging and collecting members or pins 18, which take the leading edges from the pins 16, which sets, as is usual, may be selectively operated, whereby cut-offs from the cutting cylinders l2 and 13 may be collected or not, as desired and forwarded from the collecting cylinder l1, selectively in either of two ways; first, as collected groups of any desired number of cut-offs to be later folded longitudinally in alternation by two folders; or second, as groups of collecmd cut-offs to be later folded longitudinally by either of the two folders.

A transfer cylinder 23, provided with two sets of sheet engaging pins 24, which may be selectively operated as desired, is arranged to cooperate with the cylinder H to receive the cut-offs as collected on the pins l8, and transfer alternate collected cut-offs to a second transfer cylinder 25, and those intervening to a longitudinal folder 26 of the chopper type; or all of the collected cut-offs may be transferred to either the cylinder 25 or to the longitudinal folder 26.

The cylinder 25 is provided with sheet engaging pins 21, any set of which may be rendered inoperative, and which are operable to receive unfolded cut-offs from the cylinder 23 and carry them to another longitudinal folder 29. It will be understood that the various sheet engaging pins I3, 24.. and 21 may be operated by Well known mechanism whereby they may be selectively operated or silenced as desired.

The unfolded cut-offs, that are carried by the pins 24. on the cylinder 23, pass between this cylinder and a roller 3|, which is cut away on its periphery, as at 32, to release the sheets disposed between it and the cylinder 23. The unfolded sheets carried by the pins 21 on the cylinder 25 pass between this cylinder and a roller 33, which is similarly cut away on its periphery, as at 34, to release the sheets disposed between it and the cylinder 25.

After leaving the cooperating cylinders 23 and 25 and the rollers 3| and 33 respectively, the unfolded cut-offs are engaged between driven cooperating feeding rollers 35 and 36 whereby they are respectively fed into either of the longitudinal folding devices 26 and 29. Herein the folding devices are shown as being of the usual chopper type having a vertically reciprocable blade 3'l which. is actuated to press the sheets positioned below it into the bite of a pair of cooperating folding rollers 38, only the nearer one of which is shown in the drawings. The rollers 35 and 36 are assisted in disposing the sheets beneath the blade 31- and against a locating stop 39 by driven rollers 4| and cooperating spring pressed rollers 42.

The collecting cylinder I! is preferably driven at printing machine speed from a shaft 43 through bevel gears 44 and 45 secured respectively on the shaft 43 and the cylinder IT. The cylinders 23 and 25 are geared to the cylinder I! in the usual manner by gear 41 on the shaft 46, gear 48 on the shaft of cylinder 23, and a gear 50 on the shaft of cylinder 25, and run at printing machine speed to forward the sheets as fast as the webs are received from the machine. The rollers 35 and 36, in both instances, and the rollers 4|, are arranged to be driven preferably at a speed between 30% and 40% less than the speed of the web or webs from the printing machine, whereby the unfolded sheets will be forwarded to the folder 26 and/or to the folder 29 at the proper speed to insure eflicient operation of these folders. Herein the roller 36 of folder 26 is shown so geared to the cylinder 23, by gears 5| and 52 and an intermediate gear 53, and the roller 4| is shown driven from the gear 52 by gears 54 in driving arrangement with a gear 55 secured on the shaft ofthe roller 4|. 7 Similarly, the rollers 36 and 4| of folder 29 are driven from the gear 43 of the cylinder 25 which meshes with the idler gear 53 of this folder.

Depending on the selected operative arrangement of pins of the respective cylinders ll, 23 and 25, two different functions are possible with as many different forms of open headed products or cut-offs. For instance, a first product 2| (see Figure 3), comprising two cut-offs composed of sheets cut from the Webs, is collected by the pins l8 on the cylinder l1 and transferred as collected to the cylinder 23 and then forwarded alternately in collected groups to the longitudinal folders 26 and 29 directly from the cylinder 23 to the folder 26 through the rollers 35 and 36,

and alternately from the cylinder 23 to the cylinder 25 and then to the folder 29. In this case, the products being collected ones, are taken from the collecting cylinder I! only intermittently and the entire product of the machine can be handled by the longitudinal folders without increasing the speed of the folder. As with the first product, the sheets are slowed down in speed by the rollers 35 and 36.

A second product 22 (see Figure 4), comprising four cut-offs composed of sheets. cut from the webs and collected by the pins l8 on the cylinder I! and transferred as. collected to the cylinder 23,.and then forwarded to either of the longitudinal folders 26 or 29, as desired,either directly from the. cylinder 23 to the folder 26 through the rollers 35 and 36, or from the cylinder 23 to. the cylinder 25 and then to the folder 29. In this case, the product being a collected one, is taken from the collecting cylinder i! only intermittently and the entire product of the machine can be handled by either longitudinal folder alone without increasing the speed of the folder. As with the other product, the cut-offs are slowed down in speed by the rollers 35 and 36.

The embodiment shown in Figure 2, whereby closed headed products 6! and 62, shown respectively in Figures 5 and 6, are formed, includes the suitably associated web guiding rolls I0 and II and a pair of cutting cylinders 63 and 64. In this instance, the sheets or cut-offs are out twice the length of those out by the cylinders l2 and I3, of Figure 1, and are severed from the webs by cooperating web cutting devices 65 and 66. The cylinder 64 is providedwith suitable sheet engaging members, such as pins 61, to engage what is the leading end of the webs after each group of sheets have been cut and carry them about the cylinder 64 and between it and a folding and collecting cylinder 68. The collecting cylinder 68 is shown provided with a sheet engaging and collecting member or pin 69 and a sheet tucking blade H, which cooperates with a pair of jaws 12 and [3 on a transfer cylinder 14 to fold the cutoffs engaged thereby. The jaws 12 and 13, as is usual, may be made inoperative at desired intervals to permit the collection of cut-offs upon the pins 69 and also operated to take cut-ofis from the collecting cylinder 68 and forward them selectively arranged in the following manner; first,

as cut from the web or webs, transferred by the pins 69 and folded crosswise by the cooperating blade H and jaws 12 and 13, to be later folded later folded longitudinally.

The transfer cylinder 14 by means of the jaws 12 and 13 receives the cut-offs, either collected or not collected, tucked therebetween by 1| the blade H on the collecting cylinder 68, folds them, and transfers alternately folded uncollected sheets to a second transfer cylinder 15 and to the longitudinal folder 26 of the chopper type, or all of the folded collected sheets to either the second transfer cylinder 15 or to the longitudinal folder 26. The second transfer cylinder 15 is provided with sheet gripping fingers 16, which may be operated to take cut-offs from the jaws I2 and I3.

In the form of folding mechanism shown n Figure 2, the crosswise folded sheets collected or uncollected and carried by jaws l2 and 73 on the transfer cylinder it pass between this cylinder and a roller Tl, which is cut away on its periphery, as at 18, to release the sheets. The sheets carried by the fingers 16 on the cylinder 75 pass between this cylinder and a roller l9 which is similarly cut away on its periphery, as at ill, to release the sheets. After leaving the transfer cylinders M and i5 and the rollers ii and 19 respectively, the crosswise folded sheets are engaged, as in the form shown in Figure 1, between similarly driven co-operating feeding rollers 35 and 36 whereby they are fed into either of the longitudinal folding devices 26 and 29 respectively. The various cylinders, rollers, etc., are driven, as in the form shown in Figure 1, whereby the crosswise folded sheets will be forwarded to the folder 2% or to the folder 29 at the proper speed to insure efficient operation of these folders.

Depending upon the selected timing of operation of the jaws l2 and E3 on the cylinder It, and the fingers 1'6 on the cylinder i5, at least two different functions with as many different forms of closed headed products or signatures are possible, see Figures 5 and 6. For instance, a first product 5| having a closed head 82, see Figure 5, composed of sheets cut from a web, or a plurality of assembled webs, is not collected by the collecting cylinder 58 and is transferred to the cylinder 14 while being folded crosswise by the cooperation of the blade H and the jaws l2 and 73. The product 8! s then alternately forwarded by the cylinder '44 and the cylinder 15 to the slower speed rollers 35 and 35, which forward it to the longitudinal folders 2E and 29 respectively, and the advantage of being able to operate the machine effici-ently at high speed is obtained without unduly speeding up the folders 26 and 29. A second product 62 having a closed head 83, see Figure 6, composed of sheets cut from the web or webs is collected by pins 69 on the collecting cylinder 68 and transferred as collected to the transfer cylinder !4 while being folded crosswise by the cooperating blade H and jaws l2 and I3, and then may be selectively forwarded either to the longitudinal folder 26 or to the second transfer cylinder 15 and then to the longitudinal folder 29.

It will be understood that the invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it is therefore desired that the present embodiments be considered in all respects as illustrative and not restrictive, and it will be further understood that each and every novel feature and combination present in or possessed by the mechanism herein disclosed forms a part of the invention included in this application.

What I laim is 1. In a folding mechanism for a machine operating upon a web, means for associating and cutting webs, a folder for giving the products a cross fold, means for forwarding the folded products alternately to two longitudinal folders, and product feeding means disposed adjacent to and in advance of each longitudinal folder and being adapted to reduce the speed of the products prior to the longitudinal folding operation, whereby the crosswise folder can receive webs at high speed and the longitudinal folders may operate at relatively slow speed without curtailing the output of the machine.

2. In a folding mechanism for a machine operating upon a web, means for associating and cutting webs, means to collect and forward the products as cut to a longitudinal folder and including a'crosswise folding device, and product feeding means disposed adjacent to and in advance of said longitudinal folder and being adapted to slow down the speed of the crosswise folded products prior to the longitudinal folding operation.

3. In a folding mechanism for a machine operating upon a web, means for cutting the web into cut-offs, a plurality of longitudinal cut-off folding devices, rotatable cut-off carrying members to selectively forward the cut-offs toward said longitudinal folding devices, and a pair of cooperating cut-off feeding rollers to receive the cut-offs from each of said carrying members and to feed them selectively to said longitudinally folding devices, said rollers being rotated to forward the cutoffs slower than said carrying members;

4. In a folding mechanism for a machine operating upon a web, means for cutting the web into cut-off products, a plurality of longitudinal folding devices, folding and forwarding means for giving the products a cross-fold and selectively forwarding the cut and folded products toward 5 said longitudinal folding devices, and a pair of cooperating feeding rollers to receive the products from said folding and forwarding means and feding them to each of said longitudinally folding devices, said rollers being rotated to forward the cut-off products slower than said folding and forwarding means.

.5. In a sheet folding mechanism for a printing machine, cutting mechanism operable to cut sheets from a web, a collecting cylinder having mechanism thereon to receive the sheets as cut and to selectively forward them collected and not collected, a first transfer cylinder having means thereon to take and fold the collected and not collected sheets from said collecting cylinder, a second transfer cylinder to receive collected and not collected sheets from said first transfer cylinder, a longitudinal sheet folding device to which the collected and not collected sheets are forwarded from each one of said transfer cylinders, and means to forward the sheets to each of said longitudinal folders from the respective transfer cylinder.

6. In a sheet folding mechanism for a printing machine, cutting mechanism operable to cut sheets from a Web, a collecting cylinder having mechanism thereon to receive the sheets as cut and selectively forward them collected and not collected, a first transfer cylinder having means thereon to take and fold the collected and not collected sheets from said collecting cylinder, a second transfer cylinder having mechanism thereon to selectively take and not take collected and not collected sheets from said first transfer cylinder, a longitudinal sheet folding device to which the collected and not collected sheets are forwarded from each one of said transfer cylinders, and means to forward the sheets to each of said longitudinal folders from the respective transfer cylinder.

7. In a sheet folding mechanism for a printing machine, cutting mechanism operable to cut sheets from a web, a collecting cylinder having mechanism thereon to receive the sheets as out and to selectively forward them collected and not collected, a first transfer cylinder to receive the collected and not collected sheets from said collecting cylinder, a second transfer cylinder to receive collected and not collected sheets from said first transfer cylinder, a longitudinal sheet folding device to which the collected and not collected sheets are forwarded from each one of said transfer cylinders, and a pair of cooperating feeding rollers in advance of each of said longitudinal folders and rotatable to forward the sheets slower to said folders than the sheets are fed to. said rollers;

8.'In a sheet folding machanism for a printing machine, cutting mechanism operable to cut sheets from a web, a collecting cylinder having mechanism thereon to receive the sheets as cut and to selectively forward them collected and not collected, a first transfer cylinder to receive the collected'and not collected sheets from said collecting cylinder, a second transfer cylinder having mechanisni'thereon to selectively take and not take collected and not collected sheets from said first transfer cylinder, a longitudinal sheet folding device to which the collected and not collected sheets are forwarded from said one of said transfer cylinders, and a pair of cooperating feeding rollers in advance of each of said longitudinal folders and rotatable to forward the sheets slower to said folders than the sheets are fed to said rollers.

I 9. In a sheet folding mechanism for a printing machine, cutting mechanism operable to cut sheets from a web, a collecting cylinder having mechanism thereon to receive the sheets as cut and to selectively forward them collected and not collected, a first transfer cylinder having means thereon to take and fold the collected and not collected sheets from said collecting cylinder, a second transfer cylinder to receive'c'ollected and not collected sheets from said first transfer cylinder, a longitudinal sheet folding device to which the collected and not collected sheets are forwarded from each one of said transfer cylinders, and a pair of cooperating feeding rollers in advance of each of said longitudinal folders and rotatable to forward the sheets slower to said folders than the sheets are fed to said rollers.

10; In a sheet folding mechanism for a printing machine, cutting mechanism operable to cut sheets'from a web, a collecting cylinder having mechanism thereon to receive the sheets as cut and selectively forward them collected and not collected, a first transfer cylinder having means thereon to take and fold the collected and not collected sheetsfrom' said collecting cylinder, a second transfer cylinder having mechanism thereon to selectively take and not take collected and not collected sheets from said first transfer cylinder, a longitudinal sheet folding device to which the collected and not collected'sheets' are forwarded from each one of said transfer cylinders, and a pair of cooperating feeding rollers in advance of each of said longitudinal rollers and forward the sheets slower to said folders than the sheets are fed to saidrollers.

11. In a folding mechanism for a machine operating upon a web, means for cutting the web into cut-offs, a longitudinal cut-off folding device, a rotatable cut-off carrying member to forward the cut-offs toward said longitudinal folding device, a pair of cooperating cut-off feeding rollers to receive the cut-offs from said carrying member and to feed them to said longitudinal folding device, said rollers being rotated to forward the cut-offs slower than said carrying members, and a rotatable roller cooperating with said carrying member to feed the cut-offs to said feeding rollers, said rotatable roller being adapted to release each of the cut-offs as it is engaged by said feeding rollers.

12. In a folding mechanism for a machine operating upon a web, means for cutting the web into cut-offs, a plurality of longitudinal cut-off folding devices, rotatable cut-off carrying members to selectively forward the cut-offs toward said longitudinal folding devices, a pair of cooperating cut-off feeding rollers to receive the cut-offs from each of said carrying members and to feed them selectively to said longitudinal folding devices, said rollers being rotated to forward the cut-offs slower than said carrying members, and a rotatable roller cooperating with each of said carrying members to feed the cut-offs to said folding rollers, each of said rotatable rollers being adapted to release each of the cut-offs as'it is engaged by said folding rollers.

13. In a folding mechanism for a machine operating upon a web, means for cutting the web into cut-off products, a plurality of longitudinal folding devices, folding and forwarding means for giving the products a cross-fold and selectively forwarding the cut and folded products toward said longitudinal folding devices, a pair of 00- k operating feeding rollers to receive the products from said folding and forwarding means and feeding them to each of said longitudinal folding devices, said rollers being rotated to forward the cut-on products slower than said folding and forwarding means, and a rotatable roller cooperating With each of said carrying members to feed the cut-offs to said folding rollers, each of said the collected and not collected sheets from said first transfer cylinder, a longitudinal sheet folding device to which the collected and not collected sheets are forwarded from each one of said transfer cylinders, a pair of cooperating feeding rollers in advance of each of said longitudinal folders and rotatable to forward the sheets slower to said folders than the sheets are fed to said rollers, and a rotatable roller cooperating with each of said transfer cylinders to feed the sheets to said feeding rollers, each rotatable roller being cut away over a portion of its periphery to adapt it to release the sheets between it and the cooperating transfer cylinder as the sheets are engaged by said feeding rollers.

HERMAN P. CLAUBERG.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4093203 *Jul 29, 1976Jun 6, 1978Albert-Frankenthal AgDevice for slowing down printing specimen in the folding apparatus
US4239201 *Mar 2, 1979Dec 16, 1980Maschinenfabrik Augsburg-Nurnberg AktiengesellschaftPleat-and-pinch folding apparatus
US4269402 *Oct 24, 1978May 26, 1981Firma Albert-Frankenthal AgFolding apparatus
US5042788 *Dec 27, 1990Aug 27, 1991Strachan Henshaw Machinery Ltd.Processing paper and other webs
US7575545 *Mar 31, 2005Aug 18, 2009Koenig & Bauer AktiengesellschaftLongitudinal folding device
US20070273087 *Mar 31, 2005Nov 29, 2007Holger RatzSystem comprising alternative processing sections for the further processing of products, longitudinal folding device and method for the synchronous operation of a folding device
DE2846191A1 *Oct 24, 1978Apr 30, 1980Koenig & Bauer AgFalzapparat fuer rollenrotationsdruckmaschinen
Classifications
U.S. Classification270/47, 493/445
International ClassificationB41F13/54
Cooperative ClassificationB41F13/54
European ClassificationB41F13/54