CA2026240A1 - Paper jam protected folding apparatus - Google Patents
Paper jam protected folding apparatusInfo
- Publication number
- CA2026240A1 CA2026240A1 CA002026240A CA2026240A CA2026240A1 CA 2026240 A1 CA2026240 A1 CA 2026240A1 CA 002026240 A CA002026240 A CA 002026240A CA 2026240 A CA2026240 A CA 2026240A CA 2026240 A1 CA2026240 A1 CA 2026240A1
- Authority
- CA
- Canada
- Prior art keywords
- cylinder
- folding
- combination
- gripping
- blade
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
- B65H45/16—Rotary folders
- B65H45/162—Rotary folders with folding jaw cylinders
- B65H45/163—Details of folding jaws therefor
Abstract
ABSTRACT OF THE DISCLOSURE.
To prevent damage to a combination folding blade -sheet gripping cylinder (6) which also carries counter cutter strips (8) at a predetermined fixed diametrical distance from the center of rotation of the cylinder, and a folding jaw cylinder, upon occurrence of paper jams, paper accumulations or stoppers in advance of the nip between said cylinders, the folding jaw cylinder is formed with recesses, such as a circumferential groove (18, Fig. 4) or a flattened surface (20, Fig. 3) in the region which, upon roll-off of the cylinders against each other, will be opposite the counter cutting element (8) of the combination folding blade - gripping cylinder (6). This recessed area, thus, will be located between adjacent folding jaws (13) on the folding jaw cylinder. The width of the gap at the nip, thus, will be increased at the position of the unyielding counter cutter element (8) on the combination folding blade -gripper cylinder (6). At other circumferential regions, the diameter of the folding blade - gripper cylinder can be increased by adjusting its circumferential dimension by a suitable circumferential dimension adjustment system (17) retained in eccentrically journalled bolts or rods. The recess, that is, the groove (18) of the flattened surface (20) can be filled by an elastically compressible material, or bridged by a yielding material, such as a strip of spring steel.
To prevent damage to a combination folding blade -sheet gripping cylinder (6) which also carries counter cutter strips (8) at a predetermined fixed diametrical distance from the center of rotation of the cylinder, and a folding jaw cylinder, upon occurrence of paper jams, paper accumulations or stoppers in advance of the nip between said cylinders, the folding jaw cylinder is formed with recesses, such as a circumferential groove (18, Fig. 4) or a flattened surface (20, Fig. 3) in the region which, upon roll-off of the cylinders against each other, will be opposite the counter cutting element (8) of the combination folding blade - gripping cylinder (6). This recessed area, thus, will be located between adjacent folding jaws (13) on the folding jaw cylinder. The width of the gap at the nip, thus, will be increased at the position of the unyielding counter cutter element (8) on the combination folding blade -gripper cylinder (6). At other circumferential regions, the diameter of the folding blade - gripper cylinder can be increased by adjusting its circumferential dimension by a suitable circumferential dimension adjustment system (17) retained in eccentrically journalled bolts or rods. The recess, that is, the groove (18) of the flattened surface (20) can be filled by an elastically compressible material, or bridged by a yielding material, such as a strip of spring steel.
Description
FIELD OF THE INVENTION.
The present invention relates to a folding apparatus, and more particularly to a folding apparatus using a folding cylinder in which a folding or tucking blade pushes web products, particularly printed products received from the printing machine into folding jaws of an associated folding jaw cylinder;
and especially to such an apparatus in which the tucking blade cylinder has a needling system to retain the ~Linted products h ~
thereon, and which is so arranged that paper jams or stoppers will not damage the apparatus or interfere with the printing machine as a whole.
Background.
The referenced literature, "Atlas des Zeitungs- und Illustrationsdruckes" ("Atlas of Newspaper and Magazine Printing") by Alexander Braun, published by Polygraphverlag, 1960, page 69, describes a folding apparatus of the type in which a combination folding blade or tucking blade - product gripping cylinder is associated with the folding jaw cylinder; and on which the combination folding blade - product gripping cylinder further has, on the circumference thereof, cutter counter elements, so that the folding blade cylinder can, also, cooperate with a rotating cutter knife cylinder. The foregoing literature also discusses, see page 75 thereof, that such folding apparatus may be subject to damage if a paper jam or stopper occurs. This danger is particularly acute for control apparatus therefor.
It has been proposed to utilize automatically operating safety clutches, coupled in the drive for the folding apparatus, so that the folding cylinder set or group can be disconnected at the same time that the drive motor for the machine is stopped.
Stoppers or paper jams, or other accumulationsof paper can occur especially between a folding jaw cylinder and a folding blade or tucking blade cylinder if the folding blade or tucking cylinder, for the gripping function of the printed products, uses needles or the like. It may occur that the already cut sheets, which are on the combination foldlng blade -gripping element cylinder - can slip off the needles thereof~
which carry out the gripping function. A cut sheet, which leaves the circumference of the cylinder, and loses contact with the folding blade cylinder, can then be carried along by ~'~ IJ ",;, .J ~," `~ ;~
the subsequent sheet, which will lead to a jam, that is, an accumulation of paper in the nip between the folding jaw cylinder and the combination folding blade - needling cylinder. Such a paper jam or paper accumulation may lead to damage in the system. Similar problems can occur if the end portion of a cut sheet folds itself over.
It has been proposed to eliminate danger and damage to equipment upon occurrence of stoppers or paper jaws to locate one of the cylinders such that it can be moved away, for example pivoted away, thereby increasing the nip or gap width between the combination folding blade - needle cylinder and the folding jaw cyllnder, to obtain a gap which is sufficiently wide to pass accumulated pa?er. Supervision of the folding process, and moving away one cylinder from the other, is expensive. Further, the response time of such a system is unduly long.
THE INVENTION.
It is an object to provide a folding system in which the consequences of stoppers, paper jams or paper accumulations are effectively avoided, and which is simple and inexpensive.
Briefly, passage of accumulated or incorrectly fed paper between adjacent folding jaw cylinders and combination folding or tucking blade - sheet gripping cylinders is facilitated by forming recesses or grooves or flattened surfaces extending axially on the folding jaw cylinders, and so positioned that, when a counter cutting element is in the position of the nip, i.e. opposite the folding jaw cylinder, the recess groove or the like is immediately opposite the counter knife element.
The grooves, recesses, or flattened portions on the folding jaw cylinder can be covered by elastic elements, for example strips of spring steel, or a suitable elastic plastic.
~.t~f~'Jf.`~J
The elastic elements, under normal operation, are so arranged that they complete the circumferential outline of the folding ~aw cylinder. A plurality of ad~acently located elements of this type can be used.
The system has the advantage that the cylinders need not be shifted; yet, dangerous conditions which may arise due to a paper jam, stopper or other accumulation of paper in the nip between the cylinders is effectively eliminated. If there is an accumulation of paper, a jam or the like, the grooves or flattened surfaces on the folding jaw cylinder located between the folding jaws thereof, lead to a resiliently yielding increase in the width or gap dimension of the nip.
The circumferential dimension of the combination folding blade -gripper system cylinder is unyielding at the circumferential position of the knife counter element since, as noted, this cylinder is designed to cooperate with a cutting knife cylinder. The presence of the groove, however, permits accumulated paper to pass through this nip. Any cover of the groove, for example by elastic material or spring steel, permits yielding deflection towards the root or base of the groove so that accumulated paper can readily pass through the nip without damage to the system.
Combination folding blade - needle cylinders usually are so arranged that the diameter thereof can be adjusted.
The diametrical dimension adjustment system may be controlled by eccentrically journalled bolts or the like. These segments, in case of a paper accumulation thus can yieldingly deflect towards a smaller diametrical dimension. In the region of the knife counter elements~ however, the circumferential design dimension must be maintalned, and stable construction of the ~J~ t~
cylinder is necessary. The knife counter element or a groove defining strip or rod may form the knife counter element itself, or a support bar strip or rod for the knife counter element, so that the cutting knife of a cooperating cylinder can cut a continuous web into sheets. Since the region of the knife counter element, or such a groove or support rod or bar,is always ~n the region between two folding jaws of a folding jaw cylinder, as the cylinders roll off against each other, the problem of paper accumulation or stoppers can be readily solved by relieving a portion of the circumference of the folding jaw cylinder between the folding jaws themselves, that is, by forming the above described recess or groove.
DRAWINGS:
Fig. 1 is a highly schematic side view of a folding system in accordance with the present invention, in which a continuous web is first cut into sheets which are then folded;
Fig. 2 is an enlarged detailed view of a portion of a combination folding or tucking blade - needle cylinder, and illustrating the region of a cutting groove - knife counter element;
Fig. 3 is a fragmentary axial cross-sectional view of a folding jaw cylinder, illustrating the present invention; and Fig. 4 is a view similar to Fig. 3, and illustrating another embodiment.
DETAILED DESCRIPTION.
A continuous web 2, for example derived from a printing machine, is guided to the folding system 1, by being drawn over pull rollers 3, 4 which, for example, may be constructed in accordance with the referenced Patent 4,748,910, Richter.
The web 2 then is passed between a cutting knife cylinder S and a combination folding blade - needle cylinder 6. The cutting knife cylinder 5 has two oppositely located cutting knives 7.
The combination folding blade - needle cylinder 6 is formed with a plurality of counter cutting grooves 8 and needles 9.
Rather than using the needles 9, grippers can be used.
These needles 9 or grippers, respectively, which may be collectively referred to as sheet gripping means, are provided to hold the leading portion of the web 2 before a knife 7 cuts the web, in cooperation with the counter cutting strip 8. The cut portions -not specifically shown in Fig. 1 to simplify the drawing - are then guided by the grippi-ng structure about the circumference of the combination folding blade - needle cylinder 6. A folding or tucking blade 10 is projected from the combination cylinder at an appropriate moment to insert the crease formed thereby into the jaws 13, 13' of an associated neighboring folding jaw cylinder 12. The thus folded products are then delivered to a paddle wheel distributor 14, being guided thereto in a direction of the arrow 15. The paddle wheel distributor 14 then distributes the folded products on a suitable transport belt system 16, shown only schematically.
The apparatus so far described can be conventional and can be conctructed in accordance with conventional cylinders and arrangements.
It may occur that in the region of the nip A between the combination cylinder 6 and the folding jaw cylinder 12 - a paper jam or paper accumulation or a stopper may occur which, unless remedied, may lead to damage of either one or both of the cylinders 6, 12, if the thickness of printed su'- ect matter passing between the cylinders 6, 12 is excessive. Customarily, ~ 3 2 ï ~
a diameter adjustment system generally shown at 17 permits an increase of the gap width of the nip between the cylinders 6, 12 and in the region where the diameter adjustment is effective, the consequences of a paper accumulation may not be serious.
In the region of the counter knife element strips 8, supported by suitable groove support or groove wall rods or rails 11 (Fig. 2), the diametrical dimension of the cylinder 6 cannot be adjusted. Thus, an increase of the gap width between the cylinders 6, 12,at the critical point where the hard, unyielding counter knife 8 or its support bar 11 is located, no increase of the width of the gap is possible, since neither the counter knife elements 8 nor the groove support rails 11 can be constructed to be yielding due to the function which they have to carry out - namely to form a counter cutting surface lS for the knives 7 of the cutting knife cylinder 6. Thus, the danger exists that, as an accumulation of paper tries to pass between the cylinders 6, 12 at an instant of time when the cutting strips 8,or the groove rails 11, respectively, pass through the nip, the portions of the folding system 1 Qan be damaged or destroyed.
In accordance with the present invention, the region of the folding jaw cylinder 12,which would be opposite the counter cutting grooves or groove rails 11, respectively, which is the region between adjacent folding jaws 13, is relieved to form a groove or recess 18 (Figs. 1-4) or a flattened surface 20 (Fig. 3). Thus, when the cylinders 6, 12 roll off against each other, the reces~es in the cylinder 12, that is, the grooves 18 or the flattened surfaces 20, will be located to be opposite the counter knife element 8 and/or the groove support rail 11, so that the nip between the cylinders 6, 12, 2 9 ~ ~J h ~: ~J
at that instant of time, is increased, thereby permitt~ng passage of accumulated paper or the like between the cylinders 6, 12, without danger to the cylinders or to the machlne.
It may be desirable to maintain the cylindrical contour of the folding jaw cylinder 12. If so, the recess 18, or the flattened surface 20, can be covered by an elastic covering.
Fig. 3 illustrates, highly schematically, the contour of an elastic cover 21, which may be formed of adjacently positioned elements, in which in Fig. 3 the end portion of the element is visible. Since this is not necessary, however, the contour has been shown in chain-dotted lines. Rather than using an elastomer materlal, placed in segments, for example, a circumferential cover of spring strip steel 19 (Fig. 4) can be placed to cover the groove 18 or, respectively, the flattened region 20. These elastic elements 19, 21, respectively, bridge the recess formed by the groove 18 or the flattened surface 20.
- The elements 13, 19, as well as the recess 18~ have ; been supplied with reference numerals in Fig. 1 only once to retain the clarity of the drawing.
The length of the recesses 18, 20, respectively, in circumferential direction of the folding jaw cylinder can be easily determined by computation or experiments. Usually, the longest possible circumferential portion between two adjacent folding ~aws 13 should be recessed to form the respective grooves or flattened surfaces. Fig. 4 illustrates a suitable arrangement in which the length of the recess formed by the groove 18 is a maximum. The longer this groove or flattened regions can be made, the better the assurance that in case of a stopper, paper jam or paper accumulation, such accumulated extra thickness material can pass through the nip between the s cylinders 6 and 12, without danger of damage, in spite of the fact that the diametrical position of the counter cutting element 8, or the groove support rail 11 is diametrically fixed.
Various changes and modifications may be made, and any features described herein with respect to any one embodiment may be used with any other feature, or embodiment, within the scope of the inventive concept.
The present invention relates to a folding apparatus, and more particularly to a folding apparatus using a folding cylinder in which a folding or tucking blade pushes web products, particularly printed products received from the printing machine into folding jaws of an associated folding jaw cylinder;
and especially to such an apparatus in which the tucking blade cylinder has a needling system to retain the ~Linted products h ~
thereon, and which is so arranged that paper jams or stoppers will not damage the apparatus or interfere with the printing machine as a whole.
Background.
The referenced literature, "Atlas des Zeitungs- und Illustrationsdruckes" ("Atlas of Newspaper and Magazine Printing") by Alexander Braun, published by Polygraphverlag, 1960, page 69, describes a folding apparatus of the type in which a combination folding blade or tucking blade - product gripping cylinder is associated with the folding jaw cylinder; and on which the combination folding blade - product gripping cylinder further has, on the circumference thereof, cutter counter elements, so that the folding blade cylinder can, also, cooperate with a rotating cutter knife cylinder. The foregoing literature also discusses, see page 75 thereof, that such folding apparatus may be subject to damage if a paper jam or stopper occurs. This danger is particularly acute for control apparatus therefor.
It has been proposed to utilize automatically operating safety clutches, coupled in the drive for the folding apparatus, so that the folding cylinder set or group can be disconnected at the same time that the drive motor for the machine is stopped.
Stoppers or paper jams, or other accumulationsof paper can occur especially between a folding jaw cylinder and a folding blade or tucking blade cylinder if the folding blade or tucking cylinder, for the gripping function of the printed products, uses needles or the like. It may occur that the already cut sheets, which are on the combination foldlng blade -gripping element cylinder - can slip off the needles thereof~
which carry out the gripping function. A cut sheet, which leaves the circumference of the cylinder, and loses contact with the folding blade cylinder, can then be carried along by ~'~ IJ ",;, .J ~," `~ ;~
the subsequent sheet, which will lead to a jam, that is, an accumulation of paper in the nip between the folding jaw cylinder and the combination folding blade - needling cylinder. Such a paper jam or paper accumulation may lead to damage in the system. Similar problems can occur if the end portion of a cut sheet folds itself over.
It has been proposed to eliminate danger and damage to equipment upon occurrence of stoppers or paper jaws to locate one of the cylinders such that it can be moved away, for example pivoted away, thereby increasing the nip or gap width between the combination folding blade - needle cylinder and the folding jaw cyllnder, to obtain a gap which is sufficiently wide to pass accumulated pa?er. Supervision of the folding process, and moving away one cylinder from the other, is expensive. Further, the response time of such a system is unduly long.
THE INVENTION.
It is an object to provide a folding system in which the consequences of stoppers, paper jams or paper accumulations are effectively avoided, and which is simple and inexpensive.
Briefly, passage of accumulated or incorrectly fed paper between adjacent folding jaw cylinders and combination folding or tucking blade - sheet gripping cylinders is facilitated by forming recesses or grooves or flattened surfaces extending axially on the folding jaw cylinders, and so positioned that, when a counter cutting element is in the position of the nip, i.e. opposite the folding jaw cylinder, the recess groove or the like is immediately opposite the counter knife element.
The grooves, recesses, or flattened portions on the folding jaw cylinder can be covered by elastic elements, for example strips of spring steel, or a suitable elastic plastic.
~.t~f~'Jf.`~J
The elastic elements, under normal operation, are so arranged that they complete the circumferential outline of the folding ~aw cylinder. A plurality of ad~acently located elements of this type can be used.
The system has the advantage that the cylinders need not be shifted; yet, dangerous conditions which may arise due to a paper jam, stopper or other accumulation of paper in the nip between the cylinders is effectively eliminated. If there is an accumulation of paper, a jam or the like, the grooves or flattened surfaces on the folding jaw cylinder located between the folding jaws thereof, lead to a resiliently yielding increase in the width or gap dimension of the nip.
The circumferential dimension of the combination folding blade -gripper system cylinder is unyielding at the circumferential position of the knife counter element since, as noted, this cylinder is designed to cooperate with a cutting knife cylinder. The presence of the groove, however, permits accumulated paper to pass through this nip. Any cover of the groove, for example by elastic material or spring steel, permits yielding deflection towards the root or base of the groove so that accumulated paper can readily pass through the nip without damage to the system.
Combination folding blade - needle cylinders usually are so arranged that the diameter thereof can be adjusted.
The diametrical dimension adjustment system may be controlled by eccentrically journalled bolts or the like. These segments, in case of a paper accumulation thus can yieldingly deflect towards a smaller diametrical dimension. In the region of the knife counter elements~ however, the circumferential design dimension must be maintalned, and stable construction of the ~J~ t~
cylinder is necessary. The knife counter element or a groove defining strip or rod may form the knife counter element itself, or a support bar strip or rod for the knife counter element, so that the cutting knife of a cooperating cylinder can cut a continuous web into sheets. Since the region of the knife counter element, or such a groove or support rod or bar,is always ~n the region between two folding jaws of a folding jaw cylinder, as the cylinders roll off against each other, the problem of paper accumulation or stoppers can be readily solved by relieving a portion of the circumference of the folding jaw cylinder between the folding jaws themselves, that is, by forming the above described recess or groove.
DRAWINGS:
Fig. 1 is a highly schematic side view of a folding system in accordance with the present invention, in which a continuous web is first cut into sheets which are then folded;
Fig. 2 is an enlarged detailed view of a portion of a combination folding or tucking blade - needle cylinder, and illustrating the region of a cutting groove - knife counter element;
Fig. 3 is a fragmentary axial cross-sectional view of a folding jaw cylinder, illustrating the present invention; and Fig. 4 is a view similar to Fig. 3, and illustrating another embodiment.
DETAILED DESCRIPTION.
A continuous web 2, for example derived from a printing machine, is guided to the folding system 1, by being drawn over pull rollers 3, 4 which, for example, may be constructed in accordance with the referenced Patent 4,748,910, Richter.
The web 2 then is passed between a cutting knife cylinder S and a combination folding blade - needle cylinder 6. The cutting knife cylinder 5 has two oppositely located cutting knives 7.
The combination folding blade - needle cylinder 6 is formed with a plurality of counter cutting grooves 8 and needles 9.
Rather than using the needles 9, grippers can be used.
These needles 9 or grippers, respectively, which may be collectively referred to as sheet gripping means, are provided to hold the leading portion of the web 2 before a knife 7 cuts the web, in cooperation with the counter cutting strip 8. The cut portions -not specifically shown in Fig. 1 to simplify the drawing - are then guided by the grippi-ng structure about the circumference of the combination folding blade - needle cylinder 6. A folding or tucking blade 10 is projected from the combination cylinder at an appropriate moment to insert the crease formed thereby into the jaws 13, 13' of an associated neighboring folding jaw cylinder 12. The thus folded products are then delivered to a paddle wheel distributor 14, being guided thereto in a direction of the arrow 15. The paddle wheel distributor 14 then distributes the folded products on a suitable transport belt system 16, shown only schematically.
The apparatus so far described can be conventional and can be conctructed in accordance with conventional cylinders and arrangements.
It may occur that in the region of the nip A between the combination cylinder 6 and the folding jaw cylinder 12 - a paper jam or paper accumulation or a stopper may occur which, unless remedied, may lead to damage of either one or both of the cylinders 6, 12, if the thickness of printed su'- ect matter passing between the cylinders 6, 12 is excessive. Customarily, ~ 3 2 ï ~
a diameter adjustment system generally shown at 17 permits an increase of the gap width of the nip between the cylinders 6, 12 and in the region where the diameter adjustment is effective, the consequences of a paper accumulation may not be serious.
In the region of the counter knife element strips 8, supported by suitable groove support or groove wall rods or rails 11 (Fig. 2), the diametrical dimension of the cylinder 6 cannot be adjusted. Thus, an increase of the gap width between the cylinders 6, 12,at the critical point where the hard, unyielding counter knife 8 or its support bar 11 is located, no increase of the width of the gap is possible, since neither the counter knife elements 8 nor the groove support rails 11 can be constructed to be yielding due to the function which they have to carry out - namely to form a counter cutting surface lS for the knives 7 of the cutting knife cylinder 6. Thus, the danger exists that, as an accumulation of paper tries to pass between the cylinders 6, 12 at an instant of time when the cutting strips 8,or the groove rails 11, respectively, pass through the nip, the portions of the folding system 1 Qan be damaged or destroyed.
In accordance with the present invention, the region of the folding jaw cylinder 12,which would be opposite the counter cutting grooves or groove rails 11, respectively, which is the region between adjacent folding jaws 13, is relieved to form a groove or recess 18 (Figs. 1-4) or a flattened surface 20 (Fig. 3). Thus, when the cylinders 6, 12 roll off against each other, the reces~es in the cylinder 12, that is, the grooves 18 or the flattened surfaces 20, will be located to be opposite the counter knife element 8 and/or the groove support rail 11, so that the nip between the cylinders 6, 12, 2 9 ~ ~J h ~: ~J
at that instant of time, is increased, thereby permitt~ng passage of accumulated paper or the like between the cylinders 6, 12, without danger to the cylinders or to the machlne.
It may be desirable to maintain the cylindrical contour of the folding jaw cylinder 12. If so, the recess 18, or the flattened surface 20, can be covered by an elastic covering.
Fig. 3 illustrates, highly schematically, the contour of an elastic cover 21, which may be formed of adjacently positioned elements, in which in Fig. 3 the end portion of the element is visible. Since this is not necessary, however, the contour has been shown in chain-dotted lines. Rather than using an elastomer materlal, placed in segments, for example, a circumferential cover of spring strip steel 19 (Fig. 4) can be placed to cover the groove 18 or, respectively, the flattened region 20. These elastic elements 19, 21, respectively, bridge the recess formed by the groove 18 or the flattened surface 20.
- The elements 13, 19, as well as the recess 18~ have ; been supplied with reference numerals in Fig. 1 only once to retain the clarity of the drawing.
The length of the recesses 18, 20, respectively, in circumferential direction of the folding jaw cylinder can be easily determined by computation or experiments. Usually, the longest possible circumferential portion between two adjacent folding ~aws 13 should be recessed to form the respective grooves or flattened surfaces. Fig. 4 illustrates a suitable arrangement in which the length of the recess formed by the groove 18 is a maximum. The longer this groove or flattened regions can be made, the better the assurance that in case of a stopper, paper jam or paper accumulation, such accumulated extra thickness material can pass through the nip between the s cylinders 6 and 12, without danger of damage, in spite of the fact that the diametrical position of the counter cutting element 8, or the groove support rail 11 is diametrically fixed.
Various changes and modifications may be made, and any features described herein with respect to any one embodiment may be used with any other feature, or embodiment, within the scope of the inventive concept.
Claims (8)
1. Folding apparatus having a cutter knife cylinder (5);
a combination folding blade - product gripping means cylinder (6) in operative engagement with said cutter knife cylinder (5), said combination folding blade - product gripping means cylinder (12) having product gripping means (9);
folding or tucking blades (10); and axially extending counter cutter elements (8, 11) located on the circumference of said cylinder at a predetermined fixed distance with respect to the center of rotation of said cylinder; and a folding jaw and gripping cylinder (12) having folding jaws (13,13') extending axially on the circumference thereof and located at predetermined circumferential positions to receive products creased and folded by the folding or tucking blades (10) of said combination folding blade - product gripping means cylinder (6), and wherein, in accordance with the invention, the folding jaw and gripping cylinder (12) is formed with at least one circumferential recess (18, 20) located between adjacent folding jaws(13,13') extending axially, and circumferentially opposite the counter cutter elements (8, 11) of the combination folding blade - product gripping means cylinder (6) when said counter cutter elements are at the nip opposite said folding jaw and gripping cylinder (12).
a combination folding blade - product gripping means cylinder (6) in operative engagement with said cutter knife cylinder (5), said combination folding blade - product gripping means cylinder (12) having product gripping means (9);
folding or tucking blades (10); and axially extending counter cutter elements (8, 11) located on the circumference of said cylinder at a predetermined fixed distance with respect to the center of rotation of said cylinder; and a folding jaw and gripping cylinder (12) having folding jaws (13,13') extending axially on the circumference thereof and located at predetermined circumferential positions to receive products creased and folded by the folding or tucking blades (10) of said combination folding blade - product gripping means cylinder (6), and wherein, in accordance with the invention, the folding jaw and gripping cylinder (12) is formed with at least one circumferential recess (18, 20) located between adjacent folding jaws(13,13') extending axially, and circumferentially opposite the counter cutter elements (8, 11) of the combination folding blade - product gripping means cylinder (6) when said counter cutter elements are at the nip opposite said folding jaw and gripping cylinder (12).
2. The apparatus of claim 1, wherein the product gripping means (9) of said combination folding blade - product gripping means cylinder (6) comprises puncturing needles.
3. The apparatus of claim 1, further including elastic cover elements (19, 21) covering the circumferential recesses of the folding jaw and gripping cylinder (12) and completing a cylindrical circumference of said cylinder.
4. The apparatus of claim 3, wherein a plurality of elastic cover elements (19, 21) are provided, and segmentally arranged adjacent each other in axial direction of the folding jaw and gripping cylinder (12).
5. The apparatus of claim 1, wherein said recess is formed by a flattened surface (20) relieving the cylindrical circumference of said folding jaw and gripping cylinder (12).
6. The apparatus of claim 1, wherein said recess (18) is formed by an axially extending groove (18) formed in the circumference of the folding jaw and gripping cylinder (12), said groove having a part-cylindrical cross section.
7. The apparatus of claim 3, wherein said elastic element comprises strip steel covering said recess.
8. The apparatus for claim 3, wherein said elastic elements comprise resiliently compressible elastomers filling said recess.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEP3932931.3 | 1989-10-03 | ||
| DE3932931A DE3932931A1 (en) | 1989-10-03 | 1989-10-03 | FOLDING VALVE CYLINDER FOR A FOLDING APPARATUS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2026240A1 true CA2026240A1 (en) | 1991-04-04 |
Family
ID=6390718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002026240A Abandoned CA2026240A1 (en) | 1989-10-03 | 1990-09-26 | Paper jam protected folding apparatus |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP0421083B1 (en) |
| JP (1) | JPH03152061A (en) |
| CA (1) | CA2026240A1 (en) |
| DE (2) | DE3932931A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4344622A1 (en) * | 1993-12-24 | 1995-06-29 | Koenig & Bauer Ag | Wheel folder for a rotary printing machine |
| US6250622B1 (en) * | 1999-05-20 | 2001-06-26 | Heidelberger Druckmaschinen Aktiengesellschaft | Cylinder assembly for a folding apparatus of a rotary printing press |
| DE10332646B4 (en) * | 2003-07-18 | 2005-11-03 | Koenig & Bauer Ag | Cylinder of a folder |
| DE102007019132B4 (en) * | 2007-04-20 | 2011-07-07 | manroland AG, 63075 | Insert for a jaw cylinder |
| DE102017103523A1 (en) * | 2017-02-21 | 2018-08-23 | Manroland Web Systems Gmbh | Insert for a jaw cylinder and method of making an insert for a jaw cylinder |
| DE102018108982A1 (en) * | 2018-04-16 | 2019-10-17 | Manroland Goss Web Systems Gmbh | Clamping lever for attaching machining tools to a rotatably mounted element of a printing press |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB396486A (en) * | 1931-03-19 | 1933-08-10 | Goss Printing Press Co Ltd | Improvements in or relating to folding mechanisms for paper or similar sheets |
| SE309425B (en) * | 1966-03-15 | 1969-03-24 | Winkler Fallert & Co Maschf | |
| DE2011661B1 (en) * | 1970-03-12 | 1971-07-15 | Maschinenfabrik Augsburg Nuernberg Ag | Fold measuring cylinders for rotary printing machines |
| DE3347719A1 (en) * | 1983-12-31 | 1985-07-11 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Cross-folding device |
| DE3545295C1 (en) * | 1985-12-20 | 1986-10-16 | M.A.N.- Roland Druckmaschinen AG, 6050 Offenbach | Pull roller pair for a rotary printing machine for transporting printing material webs |
| DE3810439C1 (en) * | 1988-03-26 | 1989-08-10 | Man Roland Druckmaschinen Ag, 6050 Offenbach, De |
-
1989
- 1989-10-03 DE DE3932931A patent/DE3932931A1/en active Granted
-
1990
- 1990-08-04 EP EP90115007A patent/EP0421083B1/en not_active Expired - Lifetime
- 1990-08-04 DE DE90115007T patent/DE59004497D1/en not_active Expired - Lifetime
- 1990-09-26 CA CA002026240A patent/CA2026240A1/en not_active Abandoned
- 1990-10-03 JP JP2263971A patent/JPH03152061A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE3932931C2 (en) | 1993-01-07 |
| EP0421083A3 (en) | 1991-05-22 |
| DE59004497D1 (en) | 1994-03-17 |
| EP0421083A2 (en) | 1991-04-10 |
| EP0421083B1 (en) | 1994-02-02 |
| JPH03152061A (en) | 1991-06-28 |
| DE3932931A1 (en) | 1991-04-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |