US3727909A - Device for the tilting of the folding blade of a folding-blade cylinder - Google Patents
Device for the tilting of the folding blade of a folding-blade cylinder Download PDFInfo
- Publication number
- US3727909A US3727909A US00083435A US3727909DA US3727909A US 3727909 A US3727909 A US 3727909A US 00083435 A US00083435 A US 00083435A US 3727909D A US3727909D A US 3727909DA US 3727909 A US3727909 A US 3727909A
- Authority
- US
- United States
- Prior art keywords
- blade
- cylinder
- jaw
- track
- cylinders
- 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.)
- Expired - Lifetime
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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
- B65H45/164—Details of folding blades therefor
Definitions
- ABSTRACT Folding cylinders for handling the product of a printing press or the like in which a tucker blade in one of the cylinders engages the web, or associated webs, for tucking into an opposedly phased jaw or groove in the other cylinder, the blade being mounted in the blade cylinder for timed rocking movement about an axis which lies approximately on, or somewhat outside of, the rolling circle so that the blade, and particularly the edge thereof, moves into the jaw cylinder in a direction radially of the jaw cylinder.
- the blade is guided in its rocking movement along arcuate track of slightly noncircular or oval contour so that the center of rocking movement is constantly varied in accordance with the angle of rocking, shifting outwardly of the rolling circle as the blade is rocked from neutral position.
- an object of the present invention to provide a tucker blade mounting arrangement which provides for timed rocking of the tucker blade, not about an axis which lies inside of the blade cylinder, but rather about an axis which lies at, or outside of, the rolling circle. It is a general object of the present invention to provide a tucker blade mount which enables the body of the blade, as well as the leading edge thereof, to move into the jaw cylinder along a radial path, substantially avoiding relative lateral movement of the blade during the tucking operation and avoiding any tendency to tear the web or webs incident to tucking even when operated at extremely high delivery speed.
- FIG. I is a diagramatic end view of a folder consisting of blade and jaw cylinders and in which the blade mounting and guiding means incorporates the present invention, looking along the line ll in FIG. 2.
- FIG. 2 shows the near end only of the blade cylinder and looking along the line 22 in FIG. 1.
- FIG. 3 is a fragmentary sectional view looking along the line 3--3 in FIG. 2.
- FIG. 4 is a fragmentary edgewise view taken along the line 44 in FIG. 2.
- FIG. 4a is a fragment based on FIG. 1 and showing the web being tucked into the jaw cylinder.
- FIGS. Sa-Se are a set of stop motion views showing the blade about to enter the jaw cylinder and successive positions occupied by the blade until it reaches the point of exit.
- the folder includes a tucker blade cylinder 10 of hollow or open construction, having a central shaft 11, cooperating with a jaw cylinder 12 having a shaft 13.
- An appropriate drive is provided for rotating the shafts 1 l, 13 in timed relation with one another to produce a speed, at the periphery or rolling circle, equal to the lineal speed of a web 15, or group of associated webs, fed from a printing press.
- a tucker blade 20 on the cylinder 10 which causes the web to be forced into a groove or jaw 21 in the jaw cylinder, which groove or jaw is defined by a shoulder 22 on one side and by a series of grippers 23, only one of which is shown, on the other.
- the grippers are, as is conventional, mounted upon a longitudinally extending shaft 24 which undergoes rocking movement (by means not shown) for timed gripping and release of the folded product.
- the blade 20 is received in the right edge of a beam 30 which extends within, and longitudinally of, the blade cylinder and which has an axially projecting end portion 31.
- the beam is pinned at 32 to a link 33 having a connection 34 with a crank arm 35 which is fixedly mounted with respect to a longitudinally extending shaft 36.
- the shaft is mounted for rocking movement in suitable bearings (not shown) in the blade cylinder.
- a crank arm 37 also fixed to the shaft, which has a cam follower roller 38. The roller engages the periphery of a cam $0, the profile of which is shown in FIG.
- a spring 42 which is preferably but not necessarily connected to the pin 32 in the beam removes any lost motion in the linkage and maintains the cam follower roller seated, or bottomed, on the cam 40. It will be seen, then, that as the cylinder rotates the cam follower roller 38, following the profile of the cam 40, will impart rocking movement to shaft 36 which via crank 35 and link 33, will produce cyclical rocking of the beam 30 and the blade 20 which is mounted on it. It will be understood that an identical crank 35 and link 33 are provided at the opposite end of the beam 30 so that the beam will be equally driven,
- the beam 30 is mounted for movement in an arcuate track the center of which lies at or outside of the rolling circle of the blade cylinder.
- a guide member 50 is provided having mounting surfaces 51 and an axially presented surface 52, the latter being formed with an arcuate track or groove 53.
- Mounted on the axial projection 31 at the end of the beam and snuggly fitted in the arcuate groove 53 are a pair of rollers S4, 55 which are laterally spaced from one another to occupy spaced positions in the groove.
- the guide member 50 acting together, act as a track follower.
- the guide member 50 is formed with an axially facing edge 56 which engages the side of an auxiliary roller 57 which is mounted on the portion 31 of the beam.
- a bracket or supporting plate 60 is used having a mounting portion in the form of a collar 61 which is secured by a pin 62 to the shaft 11.
- the bracket plate 60 is tapped to receive screws 63 which serve to clamp the guide member in its operating position.
- a similar guide member 50 having a matching arcuate groove 53 and mating rollers 54, 55 and a similar bracket plate 60 are provided, in mirror image, at the opposite end of the beam 30 so that the beam is supported to equal degree at both of its ends. It will be apparent that when service is required the screws 63 may be unscrewed permitting the entire beam assembly to be lifted out of the blade cylinder in the radial direction.
- the arcuate track or groove 53 in the guide member is not perfectly circular but is of reduced curvature at the ends and thus slightly of oval shape.
- the track has a curvature over its central portion which is in the blade, and centered at the rolling circle, but has a curvature at its ends which is centered in the extended portion of the blade at an axis which is spaced outwardly from the rolling circle.
- the radius of curvature of the track from its center line 71 has a value R1 and the center of curvature, C1, lies in the blade in the region of its tip, that is, at a point spaced radially outward from the rolling circle 72. It will be seen that under such conditions the blade is radially oriented with respect to the jaw cylinder for radial edgewise reception into the jaw opening 21.
- the blade Upon still further movement of the cylinders, accompanied by rocking of the beam and blade to neutral position, the blade becomes fully inserted and the beam moves into the central region of the arcuate groove.
- the radius of curvature, indicated at R3, is a minimum being centered in the blade at point C3 which lies on the rolling circle.
- the amount and rate of rocking movement during retraction of the blade may be equal, in mirror image, to that during insertion of the blade so that the blade may be retracted perfectly radially with respect to the jaw cylinder along a symmetrically cycloidal path and with the same radial orientation as during insertion.
- it is the maintenance of radial position during insertion which is the important thing; thus retraction need not be a mirror image ofinsertion.
- the center of rocking movement of the blade not only shifts within the blade during the course of insertion but that the center of rocking of the blade tends to follow the periphery, or rolling circle, of the jaw cylinder.
- the centers of curvature C1, C2 and C3 all lie at, or adjacent to, the periphery 73 of the jaw cylinder. Since the blade, during the tucking operation, maintains a radial orientation centered with respect to the jaw, the blade necessarily maintains a velocity equal to the peripheral velocity of the jaw. Other than the radial tucking motion, there is no relative movement of the blade in the jaw, that is, movement in line with the run of the web, so that excess stressing of the web, with resultant tearing, is avoided.
- the beam rocks smoothly between its extreme positions.
- the weight of the beam may, of course, be compensated by counterweighting and the cylinder may be statically and dynamically balanced with the beam in its neutral position. Considering the fact that the range of move ment of the beam is limited, balance is largely maintained during the operating cycle so that the cylinders may operate rapidly without harmful vibration. Because of the simplicity of the beam mounting and the linkage which rocks the beam, the structure is inherently strong and durable, as well as economical to construct and maintain, permitting operation for long periods of time at minimum cost and with minimum care or attention.
- the invention in its preferred form employs variation in the curvature of the track it will be understood that the invention broadly includes the provision of guide means for the beam which produces rocking of the blade about a center passing through the blade at a point which is at or adjacent to the rolling circle of the blade cylinder; therefore, a track of constant radius may be employed with a unitary track follower, if desired, without departing from the invention.
- the track'53 is stationary and the rollers 54, 55 are mounted on the beam, it will be apparent that this is not essential to practicing the invention and that the track may be formed on the beam engaged by a pair of rollers which are relatively stationary. In either event it will be understood that the length of the track shall be sufficient to accomodate the desired angle of rocking.
- the amplitude of rocking movement of the beam may be somewhat less than that shown in FIGS. 5a 5e provided that the leading edge of the blade enters along a radial path. What we claim is:
- a folding mechanism for folding a web including a frame, a tucker blade cylinder having a, generally radially extended tucker blade and a cooperating jaw cylinder having a receiving jaw, means for rotating the cylinders in the frame in phase so that the 'blade cyclically tucks the web into the jaw and then retracts from the jaw during successive rotations of the cylinders, a beam extending within the cylinder for mounting the blade, guide means for guiding the beam and blade thereon for rocking movement with respect to the blade cylinder to change the angle of the blade, said guide means including an arcuate track and track follower, the arcuate track having a central portion and terminating in end portions and approximately centered on an axis passing through the blade adjacent the rolling circle of the blade cylinder, a cam stationarily mounted with respect to the frame and arranged coaxially with the blade cylinder, and linkage means coupled to the beam and including a cam follower riding on the cam for cyclically rocking the beam so that the blade enters
- a folding mechanism for folding a web including a tucker blade cylinder having a generally radially extending tucker blade and a cooperating jaw cylinder having a receiving jaw, means for rotating the cylinders in phase so that the blade tucks the web into the jaw and then retracts during successive rotations of the cylinders, the tucker blade cylinder being of hollow construction and having a radially extending supporting member at each end, guide members secured to the supporting members, said guide members having a pair of mutually inwardly facing arcuate tracks, a rocking beam extending longitudinally between the guide members and totally contained within the cylinder for mounting the blade in extended position, the beam having a pair of axially oriented rollers at each end spaced from one another to occupy spaced positions in the respective tracks, a stationary cam mounted adjacent an end of the blade cylinder, a cam follower mounted on the cylinder for engaging the cam, and linkage interposed between the cam follower and the beam so that the beam is rocked back and forth in the
Landscapes
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1955351A DE1955351C3 (de) | 1969-11-04 | 1969-11-04 | Vorrichtung zum Verschwenken des Falzmessers eines Falzmesserzylinders |
Publications (1)
Publication Number | Publication Date |
---|---|
US3727909A true US3727909A (en) | 1973-04-17 |
Family
ID=5750055
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00083435A Expired - Lifetime US3727909A (en) | 1969-11-04 | 1970-10-23 | Device for the tilting of the folding blade of a folding-blade cylinder |
Country Status (2)
Country | Link |
---|---|
US (1) | US3727909A (de) |
DE (1) | DE1955351C3 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2432465A1 (fr) * | 1978-08-01 | 1980-02-29 | Marinoni | Perfectionnement aux machines de pliage rotatives |
EP0162628A2 (de) * | 1984-05-10 | 1985-11-27 | The Lehigh Press, Inc. | Faltvorrichtung |
US5873808A (en) * | 1996-07-23 | 1999-02-23 | Man Roland Druckmaschinen Ag | Folding blade shaft of a folding cylinder |
US5921906A (en) * | 1996-10-15 | 1999-07-13 | Komori Corporation | Pinless folder |
US20020145244A1 (en) * | 2001-04-10 | 2002-10-10 | Sappal Jatinder Singh | Folder with group jaw adjustment |
US20050107234A1 (en) * | 2002-03-04 | 2005-05-19 | Rudolf Stab | Transport device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996036492A1 (de) * | 1995-05-20 | 1996-11-21 | Koenig & Bauer-Albert Ag | Heftvorrichtung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1870544A (en) * | 1929-01-02 | 1932-08-09 | Wood Newspaper Mach Corp | Folding blade |
US3124349A (en) * | 1964-03-10 | huffman | ||
GB984334A (en) * | 1963-09-24 | 1965-02-24 | Honsel Karl Heinz | Improved methods of and apparatus for folding workpiece portions of paper, cardboard or foil material of plastic or the like |
-
1969
- 1969-11-04 DE DE1955351A patent/DE1955351C3/de not_active Expired
-
1970
- 1970-10-23 US US00083435A patent/US3727909A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3124349A (en) * | 1964-03-10 | huffman | ||
US1870544A (en) * | 1929-01-02 | 1932-08-09 | Wood Newspaper Mach Corp | Folding blade |
GB984334A (en) * | 1963-09-24 | 1965-02-24 | Honsel Karl Heinz | Improved methods of and apparatus for folding workpiece portions of paper, cardboard or foil material of plastic or the like |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2432465A1 (fr) * | 1978-08-01 | 1980-02-29 | Marinoni | Perfectionnement aux machines de pliage rotatives |
US4265438A (en) * | 1978-08-01 | 1981-05-05 | Societe Marinoni | Tucker cylinder |
EP0162628A2 (de) * | 1984-05-10 | 1985-11-27 | The Lehigh Press, Inc. | Faltvorrichtung |
EP0162628A3 (en) * | 1984-05-10 | 1986-06-25 | The Lehigh Press, Inc. | Folding apparatus |
US5873808A (en) * | 1996-07-23 | 1999-02-23 | Man Roland Druckmaschinen Ag | Folding blade shaft of a folding cylinder |
US5921906A (en) * | 1996-10-15 | 1999-07-13 | Komori Corporation | Pinless folder |
US20020145244A1 (en) * | 2001-04-10 | 2002-10-10 | Sappal Jatinder Singh | Folder with group jaw adjustment |
US7011617B2 (en) * | 2001-04-10 | 2006-03-14 | Goss International Americas, Inc. | Folder with group jaw adjustment |
US20050107234A1 (en) * | 2002-03-04 | 2005-05-19 | Rudolf Stab | Transport device |
US7311651B2 (en) * | 2002-03-04 | 2007-12-25 | Koenig & Bauer Aktiengesellschaft | Transport device |
Also Published As
Publication number | Publication date |
---|---|
DE1955351B2 (de) | 1972-01-05 |
DE1955351C3 (de) | 1975-07-24 |
DE1955351A1 (de) | 1971-05-19 |
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