EP1282518A1 - Device for clamping or tensioning - Google Patents
Device for clamping or tensioningInfo
- Publication number
- EP1282518A1 EP1282518A1 EP01943075A EP01943075A EP1282518A1 EP 1282518 A1 EP1282518 A1 EP 1282518A1 EP 01943075 A EP01943075 A EP 01943075A EP 01943075 A EP01943075 A EP 01943075A EP 1282518 A1 EP1282518 A1 EP 1282518A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- shaft
- locking
- lever
- cylinder
- pivot axis
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F27/00—Devices for attaching printing elements or formes to supports
- B41F27/12—Devices for attaching printing elements or formes to supports for attaching flexible printing formes
- B41F27/1218—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices
- B41F27/125—Devices for attaching printing elements or formes to supports for attaching flexible printing formes comprising printing plate tensioning devices moving in the printing plate end on a curvilinear path, e.g. by winding on a roll
Definitions
- the invention relates to a device for clamping and / or tensioning according to the preamble of claim 1.
- DE 195 09 561 C2 discloses a device for clamping plates with a swivel spindle, the plates being held frictionally between the channel wall and pressure cams arranged radially in the spindle. Clamping is carried out by turning the swivel spindle until the cams act almost normally on the plates lying against the duct wall.
- DE 40 05093 C1 shows an eccentrically mounted spindle which, when the spindle is rotated, clamps the plates between its outer surface and the channel wall in a frictional manner.
- DE 3401 760 A1 discloses a device for actuating a tensioning device, in which the tensioning spindle is designed as a profile shaft. Clamping is carried out by turning the head of the clamping spindle projecting beyond the end face of a cylinder, which in turn displaces a clamping bar in the circumferential direction.
- the spindle is non-positively secured against self-resetting by surface pressure of a spindle-side pin in a tab.
- US 4495865 A shows a device for the positive locking of a device for tensioning elevators on cylinders by rotating a spindle.
- the spindle is assigned a toothed disc at one of its ends.
- the locking is carried out by means of a blade positioned almost tangentially against the toothed lock washer, the shape of the teeth and the arrangement of the blade being selected in such a way that the spindle can be turned in the clamping direction, but resetting is prevented.
- the blade is activated by actuating a lever assigned to the blade the toothed disk swung away.
- DE 4442 300 A1 also shows a device for tensioning lifts, which has a locking device which, in the operating state, permits rotation in the tensioning direction, but blocks a reset.
- Tensioning and locking or releasing takes place here on a single adjusting means arranged in extension to the spindle, which is rotated in the circumferential direction of the spindle for tensioning the elevator and is moved axially to the spindle axis for locking / releasing. There is no path or force limitation in the clamping direction.
- DE 29 10 880 C2 also discloses an apparatus for tensioning an elevator, wherein an elevator is tensioned and a shaft is locked by means of a single device. Tensioning and locking via the friction of a threaded bolt arranged in a screw thread is carried out using the same movement.
- the invention has for its object to provide a device for clamping and / or tensioning.
- An advantage that can be achieved with the invention is, in particular, that the device allows the clamping or tensioning of elevators and at the same time a positive locking in the desired position.
- the actuation of separately designed devices for locking or releasing and clamping or tensioning is not necessary.
- the device is easy to use and precise and secure against the occurring load devices can be locked.
- Another advantage of the device is that the locking takes place by means of a positive fit, the effective surfaces being almost perpendicular to the peripheral surface and thus normal to the possible movement or force direction of the shaft or spindle.
- the device cannot be loosened by centrifugal forces, vibrations or micro-movements, as is possible with non-positive connections or with resilient lever mechanisms.
- the locking can be carried out in a simple, self-locking manner.
- the device In the operating state of the cylinder, i.e. H. in the idle state of the device for clamping and / or tensioning, the device is held in the positive locking.
- the arrangement of a locking device that acts in a form-locking manner in both directions of rotation of the spindle is particularly advantageous. This allows an exact, reproducible positioning of the spindle or shaft, and thus of the surfaces interacting with the elevator, and a defined position, regardless of the pretensioning of the device or elevator.
- the position of the spindle is particularly important for non-positive or positive locking or clamping with the aid of profile shafts, cams or gripping members on shafts. A small change in position of the surface interacting with the elevator in the circumferential direction or an initially not exactly set position may cause the device to “open”, in particular when working at the dead center (unstable equilibrium).
- the unintentional adjustment of the spindle is prevented by forces or movements pointing out of the channel and directed into the channel.
- the former is caused, for example, by the tensile force of the elevator or the centrifugal force, the latter, for example, by changing the length or equalizing the elevator over the circumference If there is only a frictional connection between the elevator and the surface of the spindle interacting with the elevator, the Run the elevator further into the channel without the spindle being adjusted in the circumferential direction and thus being rotated out of its target position.
- FIG. 1 shows a section through a channel with a clamping and / or tensioning device.
- FIG. 2 shows an isometric view of the device for clamping and / or tensioning
- FIG. 3 shows a section through the device for clamping and / or tensioning in the locking position A
- FIG. 4 shows a section through the device for clamping and / or tensioning in release position B.
- a device for non-positively or positively holding and / or tensioning at least one elevator 03 for example a printing plate 03 on a forme cylinder 01, in an axially extending channel 02 of the cylinder 01 or a rubber blanket 03 arranged on a transfer cylinder 01.
- the device for tensioning or holding the elevator 03 is actuated via a shaft 04 rotatably mounted in the channel 02 of the cylinder 01, for example a spindle 04 with thrust pieces.
- the channel 02 which runs parallel to the cylinder axis, has a slot 06 on the lateral surface of the cylinder 01 and a slot located in the interior of the cylinder 01, with which Slot 06 connected, hole 07 on.
- the shaft 04 in the example a pivotable spindle 04, is arranged in the bore 07.
- both ends of the elevator 03 are guided into the slot 06 and clamped by pivoting the spindle 04 with the aid of the clamping and / or tensioning device.
- the spindle 04 is provided with pressure pieces 08.
- a hook bar 08 serves as a pressure piece 08 for the non-positive holding of the elevator 03, which in a recess 09, z. B. a groove 09 is arranged.
- the hook bar 08 is by resilient elements 11, z. B. by compression springs 11, pressed in the radial direction out of the spindle 04 against the elevator 03.
- the compression springs 11 are located in blind holes 12 spaced apart from one another in the axial direction and arranged in the bottom surface of the groove 09.
- the head of the hook bar 08 which interacts with the elevator 03 can be provided with a continuous hook 13 or with a plurality of hooks 13 spaced apart from one another in the longitudinal direction of the spindle 04, which in the example for releasing the elevator 03 with the edge 14 of the elevator 03 or corresponding recesses 16 work together in elevator 03.
- the shaft 04 can also be a profile shaft, an eccentric shaft, a spindle provided with cams or rollers, or an eccentrically mounted spindle.
- the shaft 04 acts by means of its active surface, either directly or non-positively with the elevator 03, or in turn actuates a movable mechanism which interacts with the elevator 03.
- the effective area is the area of shaft 04 referred to, which cooperates frictionally or non-positively with the elevator 03 or the movable device.
- the device for clamping and / or tensioning essentially has a recess 18 in the shaft 04 on its outer surface 19, in which a pivoted lever 21 is arranged.
- the pivot axis 22 assigned to the lever 21 is almost perpendicular to the pivot axis 23 of the shaft 04.
- the shaft 04 is advantageously rotated about its pivot axis 23 with the aid of the lever 21.
- the lever 21 is pivoted about the pivot axis 22.
- the shape and position of the lever 21 are designed such that in a first position, the locking position A, the lever 21 interacts positively with the surfaces 24 and 26 of a pair of stops, for example the lateral surfaces 24 and 26 of a cylinder-fixed groove 27.
- the shaft 04 is fixed in this locking position A with respect to its pivot axis 23 in both directions.
- the release position B the lever 21 with respect to the cylinder 01 is exposed and thus allows the shaft 04 to be rotated.
- the recess 18 is embodied at one end of the shaft 04 as a groove 18 which runs continuously through the shaft 04 perpendicular to the pivot axis 23 of the shaft 04.
- the groove 18 can also be arranged on a bearing journal assigned to the shaft 04 or another extension assigned to the shaft 04.
- the groove 18 is located on the end face at one end of the shaft 04 and divides it into two legs 28 and 29 with opposing surfaces 31 and 32 facing the pivot axis 23 of the shaft 04 and an intermediate one in the direction of the end face 33 of the shaft Shaft 04 facing, surface 34.
- the legs 28 and 29 each have an outwardly facing surface 36 and 37, which are part of the outer surface 19 in the present example.
- the groove 18 there is a bolt 38 which runs according to the pivot axis 22 arranged on which the lever 21 is pivotally mounted.
- the bolt 38 runs between the surfaces 31 and 32 of the legs 28 and 29 in the interior of the groove 18, preferably perpendicular to the pivot axis 23 of the shaft 04. It enables the lever 21 to be pivoted in a plane which is parallel to the pivot axis 23 of the shaft 04 and perpendicular to the pivot axis 22.
- the bolt 38 can be a one-piece through the lever 21 or a split, arranged on both sides of the lever 21 axis 38. It can be non-positively or positively connected in the legs 28 and 29 or else in the lever 21, the rotatable mounting then being arranged accordingly in the lever 21 or in the second case in the legs 28 and 29, for example in the form of bushings or bearings are.
- the lever 21 is designed as a two-armed lever 21 with respect to the pivot axis 22.
- the pin 38 acting as a fulcrum defines a lever arm 39 to be actuated and a lever arm 41 which acts as a pawl 41.
- the lever 21 has two lateral surfaces 42 and 43 lying almost parallel to the surfaces 31 and 32 of the legs 28 and 29, as well as a surface 44 facing the surface 34 and a surface 46 diametrically opposite the surface 44 on the lever 21.
- the lever 21 is approximately cuboid and has two opposite end faces 47 and 48.
- the lever 21 can also be designed as a one-armed lever.
- the pawl 41 represents, for example, a nose 41 which projects laterally from the surface 46 on the lever arm 39 and which engages in the locking position A in the cylinder-fixed groove 27.
- the end face 47 assigned to the lever arm 39 to be actuated can have an opening 49, for example a bore 49, into which an actuating means 51, for example an actuating mandrel 51, is inserted in a form-fitting manner in order to extend the lever arm 39.
- the positive connection can also be carried out conversely through an opening 49 in the actuating means 51 and a projection on the lever arm 39 corresponding to the shape.
- the dimensions and the position of the lever arm 41 which acts as a pawl 41, are selected such that its end face 48 in the release position B is, for example, flush with the lateral surface 19, or at least does not protrude above it, but in the locking position A projects beyond the lateral surface 19 and positively with it the lateral surfaces 24 and 26 of the groove 27 cooperate.
- the pawl 41 is part of the cuboid, two-sided lever 21 and has a length 141 and a width b41.
- the bolt 38 arranged perpendicular to the pivot axis 23 of the shaft 04 passes perpendicularly through the surfaces 42 and 43 of the lever 21.
- the length 141 of the pawl 41 is approximately equal to the radius r04 of the shaft 04, so that the end face 48 is almost in an imaginary extension the lateral surface 19 runs flush.
- the edge defined by the surfaces 48 and 46 emerges from the imaginary course of the lateral surface 19.
- the cuboid lever 21 on its surface 46 in the region of the lever arm 39 can be chamfered by the angle ⁇ such that the lever 21 does not protrude from the end face of the cylinder 01 in the locking position A.
- the cuboid lever 21 on its surface 44 in the region of the lever arm 41 can be chamfered by the angle ⁇ such that the lever 21 does not protrude into the shaft 04 in the locking position A.
- the position and shape of the pawl 41 depend on the shape and spacing of the surfaces 24 and 26, each of which acts as a stop with the pawl 41, and the positioning of the shaft 04 in the cylinder 01.
- the end of the shaft 04 protruding from the channel 02 and provided with a groove 18 on the end face is positively mounted in a bore 52 of the end wall 53 of the cylinder 01 and is rotatable about the pivot axis 23.
- the shaft 04 is not completely surrounded by the end wall 53 of the cylinder 01.
- the Opening angle ⁇ depends on the required path of the lever 21 for the actuation of the shaft 01 and can be, for example, 290 °.
- the groove 27 cooperating with the pawl 41 is arranged in the bore 52 parallel to the pivot axis 23 and has a base surface 54 and two lateral surfaces 24 and 26 which cooperate with the surfaces 42 and 43 of the pawl 41.
- a plurality of grooves 27 can also be arranged in the bore 52 in the circumferential direction.
- the pawl 41 can also cooperate with other types of surfaces 24 and 26 arranged on the cylinder 01, which in the locking position A receive the force transmitted through the surfaces 42 and 43 of the lever 21, acting tangentially to the lateral surface 19 of the shaft 04, in a form-fitting manner.
- This can be, for example, a segment of an internally toothed ring gear with the respective tooth flanks as surfaces 24 and 26 and cooperating pawl 41, for example designed as a trapezoidal or triangular prism.
- the inclination of the surfaces 24 and 26 which act as a stop with the lever 21, for example as lateral surfaces 24 and 26 of a groove 27, are advantageously arranged almost parallel to the surfaces 42 and 43 of the lever 21 when the shaft 04 and lever 21 are in locking position A.
- the surfaces 42; 43; 24 and 26 approximately in a plane parallel to the pivot axis 23 and thus in the pivot plane of the lever 21.
- a positive connection against possible rotation of the shaft 04 with a surface pressure that is as uniform as possible can be achieved, for example, by the arrangement of the surfaces 42; 43; 24 and 26 can be achieved in a plane which runs almost parallel to the pivot axis 23 and perpendicular to the tangent to the lateral surface 19 of the shaft 04.
- the width b41 of the pawl 41 can be chosen to be almost equal to the width b27 of the groove 27 or almost the same distance between the surfaces 24 and 26 which act as a stop. It is advantageous to form the end of the pawl 41 which cooperates with the groove 27 and has lateral surfaces 42 and 43 which converge slightly in a wedge shape towards the groove 27. In this case, the width b27 of the groove 27 or the clear distance between the surfaces 24 and 26 chosen larger than the narrower side facing the groove 27 and smaller than the wider side of the wedge-shaped end of the pawl 41. In the locking position A, the pawl 41 is located as far as possible in the groove 27 and forms a positive, play-free connection with regard to the possible pivoting direction of the shaft 04.
- the lever 21 is in the non-actuated state in the locking position A and prevents the shaft 04 from being inadvertently rotated.
- an element 56 which is almost parallel to the pivot axis 23 and is arranged in the surface 34 of the shaft 04 cooperates directly or indirectly with the surface 44 in the region of the lever arm 39.
- the surface 34 has a blind hole 57 in which a spring 56 and a ball 58 are arranged. The spring 56 is supported on the bottom of the blind hole 57 and presses the ball 58 arranged in the mouth of the blind hole 57 against the surface 44 of the lever arm 39.
- a lever 21 which can be pivoted in a plane which is almost parallel to the pivot axis 23 of the shaft 04, and which has a pawl 41 which, by means of its lateral surfaces 42 and 43, interacts positively with those respectively acting as a stop Surfaces 24 and 26 work together.
- the shaft 04 In the locking position A of the lever 21, the shaft 04 is fixed in both directions with respect to its pivot axis 23.
- the surfaces 24; 26; In another embodiment, 42 and 43 can also be designed to form lines of contact or points. It is also possible, for example via a gear made of gear wheels, to arrange the pivoting movement for clamping / tensioning not directly about the pivot axis 23 of the shaft 04, but about an axis parallel to this pivot axis.
- the lever 21 located in the locking position A is pivoted into the release position B by pivoting the lever arm 39 against the force of the resilient element 56.
- the pawl 41 moves out of the groove 27 and is in the release position B.
- the shaft 04 for example the pivotable spindle 04, can now be rotated about its pivot axis 23 on the lever arm 39, with or without actuating means 51.
- the shaft 04 is first rotated in the direction in which the hooks 13 of the hook strip 08 arranged in the spindle 04 engage under the edge 14 or the recesses 14 of the elevator 03.
- the spindle is rotated in the opposite direction, the hooks 13 pushing the elevator 03 out of the channel 02.
- the shaft 04, z. B. the spindle For clamping or tensioning a new elevator 03, the shaft 04, z. B. the spindle, first brought into a position in which the hooks 13 release the channel 02 for the elevator 03.
- the spindle 04 is arranged in this position such that the hooks 13 point radially outward in the cylinder 01 and not in the slot 06.
- Both ends of the elevator 03 are inserted through the slot 06 into the channel 02, so that they come to rest between a cylinder-fixed wall 53 of the slot 06 and the spindle 04.
- the spindle 04 is then pivoted about its pivot axis 23 via the lever arm 39 until the pawl 41 reaches the position specified by the groove 27 on the cylinder 01.
Landscapes
- Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
- Load-Engaging Elements For Cranes (AREA)
- Forklifts And Lifting Vehicles (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Paper (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Clamps And Clips (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10024331A DE10024331B4 (en) | 2000-05-17 | 2000-05-17 | Device for clamping and / or clamping |
DE10024331 | 2000-05-17 | ||
PCT/DE2001/001832 WO2001087612A1 (en) | 2000-05-17 | 2001-05-15 | Device for clamping or tensioning |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1282518A1 true EP1282518A1 (en) | 2003-02-12 |
EP1282518B1 EP1282518B1 (en) | 2008-04-30 |
Family
ID=7642497
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01943075A Expired - Lifetime EP1282518B1 (en) | 2000-05-17 | 2001-05-15 | Device for clamping or tensioning |
Country Status (6)
Country | Link |
---|---|
US (1) | US6694878B2 (en) |
EP (1) | EP1282518B1 (en) |
AT (1) | ATE393704T1 (en) |
AU (1) | AU2001265784A1 (en) |
DE (2) | DE10024331B4 (en) |
WO (1) | WO2001087612A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3028858A1 (en) * | 2014-12-05 | 2016-06-08 | Miyakoshi Printing Machinery Co., Ltd. | Printing plate holding apparatus |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7565856B2 (en) * | 2005-07-01 | 2009-07-28 | Eagle Rotary Systems, Inc. | Rotary cutting tool |
DE102012220398B4 (en) | 2012-11-09 | 2016-09-15 | Koenig & Bauer Ag | A method for clamping a plate on a lateral surface of a rotary body of a printing press |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3727551A (en) * | 1971-07-22 | 1973-04-17 | North American Rockwell | Reversible lockup for flexible printing plate |
DE2953815C2 (en) * | 1979-03-20 | 1983-11-03 | Koenig & Bauer AG, 8700 Würzburg | Blanket tensioner |
US4417514A (en) * | 1982-08-13 | 1983-11-29 | Mitsubishi Jukogyo Kabushiki Kaisha | Printing plate exchange system |
US4495865A (en) * | 1983-03-15 | 1985-01-29 | Komori Printing Machinery Co., Ltd. | Plate clamping device of web-fed rotary printing press |
DE3401760A1 (en) * | 1984-01-19 | 1985-08-01 | Albert-Frankenthal Ag, 6710 Frankenthal | Device for clamping printing plates |
JP2520213Y2 (en) * | 1989-09-21 | 1996-12-11 | 株式会社小森コーポレーション | Plate winding device |
DE4005093C1 (en) * | 1990-02-17 | 1991-06-20 | Man Roland Druckmaschinen Ag, 6050 Offenbach, De | Forme clamp for printing cylinder - has channel in cylinder with spindle to clamp form eccentrically |
US5383401A (en) * | 1994-02-22 | 1995-01-24 | Heidelberg Druckmaschinen Ag | Actuating device for clamping arrangement for printing plates in rotary printing presses |
DE19509561C2 (en) * | 1995-03-16 | 1997-10-23 | Koenig & Bauer Albert Ag | Device for clamping plates on a cylinder |
DE19642141C1 (en) * | 1996-10-12 | 1998-06-18 | Koenig & Bauer Albert Ag | Device for releasing plates |
-
2000
- 2000-05-17 DE DE10024331A patent/DE10024331B4/en not_active Expired - Fee Related
-
2001
- 2001-05-15 AU AU2001265784A patent/AU2001265784A1/en not_active Abandoned
- 2001-05-15 EP EP01943075A patent/EP1282518B1/en not_active Expired - Lifetime
- 2001-05-15 AT AT01943075T patent/ATE393704T1/en not_active IP Right Cessation
- 2001-05-15 US US10/275,969 patent/US6694878B2/en not_active Expired - Fee Related
- 2001-05-15 WO PCT/DE2001/001832 patent/WO2001087612A1/en active IP Right Grant
- 2001-05-15 DE DE50113912T patent/DE50113912D1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO0187612A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3028858A1 (en) * | 2014-12-05 | 2016-06-08 | Miyakoshi Printing Machinery Co., Ltd. | Printing plate holding apparatus |
US9701108B2 (en) | 2014-12-05 | 2017-07-11 | Miyakoshi Printing Machinery Co., Ltd. | Printing plate holding apparatus |
Also Published As
Publication number | Publication date |
---|---|
WO2001087612A1 (en) | 2001-11-22 |
US20030154873A1 (en) | 2003-08-21 |
ATE393704T1 (en) | 2008-05-15 |
AU2001265784A1 (en) | 2001-11-26 |
DE50113912D1 (en) | 2008-06-12 |
US6694878B2 (en) | 2004-02-24 |
DE10024331A1 (en) | 2001-11-22 |
DE10024331B4 (en) | 2005-08-18 |
EP1282518B1 (en) | 2008-04-30 |
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