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
  • B41F27/1262—Devices for attaching printing elements or formes to supports for attaching flexible printing formes without tensioning means

Definitions

• the invention relates to devices for holding at least one elevator on a cylinder of a rotary printing press and a method for mounting these devices according to the preamble of claim 1, 2, 9, 10 or 38.
• DE 10058996 C1 discloses a device arranged in a channel of a cylinder of a rotary printing press for fastening an elevator to be mounted on the cylinder, the device having a one-armed lever and a spring and the lever having a pivot axis which is fixed to the cylinder, the spring being between a Wall of the channel and the lever is clamped.
• the channel has an opening and the lever and the spring are arranged in a base body, the base body being designed as a tube corresponding to the cross section of the channel and the lever being pivotably mounted in the region of a wall of the base body opposite the opening of the channel is.
• the associated WO 02/43962 A2 discloses in FIG. 2 a device for fastening an elevator to be mounted on the cylinder, the lever being pivotably mounted in a groove made in a wall of the channel, but the device has no base body.
• DE 19924787 A1 discloses a method and a device for clamping and releasing flexible plates, the device being encased in a base body arranged in a channel of a cylinder of a printing press. Clamping elements of the device are pivotally mounted in abutments, the Abutments are designed as slots in the base body, in which the clamping elements engage with their lower end.
• the cross section of the channel is adapted to the cross section of the channel-shaped base body.
• the invention has for its object to provide devices for holding at least one elevator on a cylinder of a rotary printing press and a method for mounting this device.
• a one-armed lever and a spring device for fastening an elevator to a cylinder of a rotary printing press forms an assembly that is easy to assemble in a channel of a cylinder, this assembly being inexpensive to manufacture.
• the solution found has the advantage that a base body largely comprising the holding means is not required, which already means a saving in material and thus lower costs.
• the bracket fixes the holding means in its bearing point, thereby securing the holding means against unintentional release from its operating position and also the device as a whole in the channel is arranged at the same time against rotation.
• additional measures are required to prevent it from rotating.
• the spring spreading the bracket and the holding means can be securely locked at least at one end, which also has an assembly advantage.
• the spring is guided linearly and is therefore protected against lateral breaking out.
• a stop provided between the bracket and the holding means prevents the spring from being able to be pressed onto the block, the spring trying to move sideways.
• the stop also advantageously prevents the holding means from clamping an end of the elevator that is hooked onto the edge that leads in the production direction of the cylinder, which would be an obstacle to the removal of an elevator that is wound around the cylinder.
• Figure 1 is a sectional view of a device for holding an elevator to be mounted on the cylinder.
• Fig. 2 is a perspective view of the bracket
• Figure 3 is a flat development of the legs of the bracket.
• Figure 4 is a helical spring attached to a tab with a retracted last turn.
• Figure 5 is a sectional view of a tab with a sleeve and a spring. 6 is a perspective view of the sleeve;
• FIG. 7 shows a sectional illustration of a further variant of a device for holding an elevator to be mounted on the cylinder
• FIG. 8 is a perspective view of parts of the device according to FIG. 7.
• an elevator 03 for. B. a flexible plate-shaped printing form 03, fastened in that bent legs 04; at the ends of the elevator 03; 06 inserted into a channel 07 arranged in the cylinder 01, which has an opening 11 directed towards the lateral surface 02 of the cylinder 01, and there essentially on the walls 08; 09 the opening 11 are created.
• the legs 04; 06 also rest against the wall 12 of the channel 07 following the area of the opening 11 and lying deeper inside the cylinder 01, because the boundary between the walls 08; 09 of the opening 11 and the wall 12 of the channel 07 runs smoothly.
• the channel 07 can have different cross-sectional geometries without influencing the invention, but - as shown in FIG. 1 - a circular cross-section is favorable in terms of production technology.
• the description of the invention is here made without restricting the invention to the following simplified illustration, as if only a single elevator 03 wrapping around the cylinder 01 had to be fastened.
• a plurality of elevators according to the invention described here can be attached to the cylinder 01 both in its axial direction and in its circumferential direction, but in the case of several elevators in the circumferential direction also several channels are to be provided.
• the elevator 03 to be fastened on the cylinder 01 has a leading end 13 and a trailing end 14, each with a beveled leg 04; 06 on.
• the opening 11 of the channel 07 has a front edge 16 seen in the production direction P of the cylinder 01, from which a wall 08 extends to the channel 07, this wall 08 also being referred to as a first wall 08, and a rear edge 17 , from which a wall 09 also extends to the channel 07, this wall 09 being called the second wall 09.
• the opening 11 is long and narrow on the lateral surface 02 of the cylinder 01 and is thus slit-shaped, the slot width S compared to the depth t of the channel 11, which, for.
• B.28 mm to 35 mm is small and dimensioned such that one leg 04 of a leading end 13 of an elevator 03 and one leg 06 of a trailing end 14 of the same or - in the case of several fastened in the circumferential direction of the cylinder 01
• Elevators 03 - a similar elevator 03 in the opening 11 can be arranged one behind the other.
• Slot widths S of less than 5 mm are advantageous, preferably in the range from 1 mm to 3 mm.
• the ratio of the depth t of the channel 07 to the slot width S is thus approximately 10: 1.
• An acute angle ⁇ is formed between the wall 08 extending from the front edge 16 to the channel 07 and an imaginary tangent T lying on the lateral surface 02 of the cylinder 01 on the opening 11, which angle is between 40 ° and 50 °, preferably 45 ° is.
• the slot width S of the opening 11 tapers towards the lateral surface 02 of the cylinder 01 and increases towards the channel 07.
• the leg 04 of the leading end 13 of the elevator 03 can be suspended from the front edge 16 of the opening 11, so that this leg 04 preferably bears in a form-fitting manner on the wall 08 extending from the front edge 16 to the channel 07.
• the wall 09 on the rear edge 17 of the opening 11 drops approximately perpendicular to the channel 07.
• the wall 09 can also be slightly inclined so that the opening 11 widens towards the channel 07.
• An angle ß that is as the opening angle between the wall 09 extending from the rear edge 17 to the channel 07 and the already mentioned tangent T lying on the lateral surface 02 of the cylinder 01 on the opening 11, z. B. in the range between 85 ° and 95 ° and is preferably 90 °.
• the channel 07 usually extends axially parallel to the cylinder 01 z. B. over its entire length.
• a recess 18 in the wall 12 of the channel 07, for example a groove 18, into which or in which a dimensionally stable, rigid, preferably plate-shaped holding means 19 is set, preferably loosely, and pivotably mounted is.
• the holding means 19 can, for. B. a metallic, extending longitudinally in the channel 07, preferably mounted in or on the bottom of the channel 07 bar.
• the groove 18 is accordingly the bearing point and the support point of the holding means 19 designed as a lever.
• the width B of the groove 18 is larger than the thickness D of the holding means 19.
• the holding means 19 is of this type formed that it has a first upper end 21 which can be placed on one of the two walls 08 or 09 of the opening 11 and a second lower end 22 opposite the opening 11, this lower end 22 being supported in the groove 18.
• a holder can be provided in the interior of the channel 07 close to the wall 12 thereof, in which the holding means 19 is pivotably mounted. The holding means 19 thus divides the cross section of the channel 07 into two sections by its arrangement and design.
• bracket 23 In the channel 07 is a dimensionally stable bracket 23 with one or more edges 32; 33 provided.
• the bracket 23 has two ends, z. B. a first lower leg 26 is directed from a first edge 32 to one end of the bracket 23 and a second upper leg 27 from a second edge 33 to another end of the bracket 23.
• the bracket 23 is thus preferably designed as a polygon and has a substantially semicircular, U-shaped or L-shaped cross section, the bracket 23 in the channel 07 is preferably arranged predominantly only on one side of the holding means 19, specifically on that side which faces the wall 08 of the opening 11 which extends at an acute angle ⁇ to the channel 07.
• the bracket 23 is advantageously directed from the second lower end 22 of the holding means 19 to the first upper end 21 thereof, in one preferred embodiment one end of the bracket 23 extending up to the wall 08 of the opening which extends at an acute angle ⁇ to the channel 07 11 extends.
• the bracket 23 is z. B. formed as a stamped from sheet metal and bent component and may have several bending points. Alternatively, the bracket 23 can be a dimensionally stable molded part made of plastic. On the bracket 23 suitable support points are formed for its storage in the channel 07, for. B. sharp or rounded edges or in relation to the entire surface of the bracket 23 small, z. B. flat areas. In the case of a metallic bracket 23, the edges 32; 33 z. B. bending edges 32; 33rd
• the lower leg 26 of the bracket 23 is preferably attached to the lower end 22 of the holding means 19. The attachment of the lower leg 26 at the lower end
• the 22 of the holding means 19 can, for. B. take place in that at the lower end 22 of the holding means 19 at least one opening, z. B. a hole or punch, in particular a T-shaped punch, is attached, in which at least one formed on the lower leg 26 tab 28 (Fig. 2 and 3), in particular a T-shaped tab 28, can be hung.
• a T-shaped design of the punching in the holding means 19 and the tab 28 has the advantage that a tab 28 suspended on the holding means 19 can be locked. Also on the upper leg 27 of the bracket
• the bracket 23 is formed at least one tab 29 directed towards the first end 21 of the holding means 19, but preferably a plurality of tabs 29 of the same type, onto which a spring 31, preferably a helical spring 31, is placed.
• the bracket 23 is supported in the channel 07 at discrete, ie spaced-apart support points, preferably at three support points, with one support point on the wall 12 of the channel 07 in the (upper) channel half facing the opening 07 or in particular on the wall 08 of the opening 11 which extends at an acute angle ⁇ to the channel 07.
• Fig. 1 shows a bracket 23, which is supported at discrete support points and thus does not rest on the wall 12 of the channel 07 over the entire surface.
• the bracket 23 is supported with its second upper leg 27 on the wall 08 of the opening 11 extending at an acute angle ⁇ to the channel 07 and with an edge 32 on the wall 12 of the channel 07.
• Further support points are provided by the end faces of a helical spring 31 arranged between the second upper leg 27 of the bracket 23 and the first upper end 21 of the holding means 19 and by attaching the first lower leg 26 of the bracket 23 to the second lower end 22 of the holding means 19.
• the support point of the bracket 23 at the second lower end 22 of the holding means 19 is spaced from the bearing and pivot point of the holding means 19 by a distance a, the distance a being a few millimeters, preferably between 1 mm and 3 mm.
• the support point of the bracket 23 with the edge 32 on the wall 12 of the channel 07 shown in FIG. 1 is optional because three support points are sufficient for the safe mounting of the bracket 23 in the channel 07.
• the use of the support point on the wall 08 of the opening 11 which extends at an acute angle ⁇ to the channel 07 offers the advantage of fixing the holding means 19 in its bearing and pivot point with the bracket 23.
• the mounting of the bracket 23 in the channel 07 is decoupled from a pivoting movement of the holding means 19.
• the spring 31, which is preferably placed on the tab 29, is pretensioned and spreads apart the bracket 23 and the holding means 19.
• the spring 31 is thus supported at one end on the bracket 23 and at the other end on the holding means 19, preferably close to the upper end 21 of the holding means 19, so that the holding means 19 acting as a lever from its bearing point in the groove 18 to Spring 31 forms the longest possible arm.
• the spring 31 can be supported on the bracket 23 by a or a plurality of webs 34 (FIGS. 2 and 3) integrally formed on the side of the tab 29 or an appropriately designed stop-shaped collar 34 are supported.
• the bending edge 33 of the bracket 23 or its upper leg 27 is advantageously supported close to or on the wall 08 extending from the front edge 16 to the channel 07.
• the force exerted by the spring 31 arranged between the bracket 23 and the holding means 19 on both the bracket 23 and the holding means 19 supports in connection with the support of the bracket 23 on the wall extending at an acute angle ⁇ to the channel 07 08 of the opening 11, the fixing of the holding means 19 in its bearing and pivot point in the groove 18.
• the upper end 21 of the holding means 19 is pressed against the wall 09 extending to the rear edge 17 of the opening 11, as a result of which the upper end 21 of the holding means 19 results in a clamping point which is used to fasten a leg 06 of an elevator 03 suspended there.
• the holding means 19, the bracket 23 and the spring 31 form a structural unit which can be mounted in a channel 07 of a cylinder 01 in a simple manner, preferably by being pushed laterally into the channel 07.
• a method for assembling a cylinder 01 of a rotary printing press with a device for fastening at least one elevator 03 to the cylinder 01, the device being arranged in a channel 07 of the cylinder 01, is thus essentially characterized by the method steps that a spring 31 is on an upper leg 27 of a bracket 23 is placed, that a lower leg 26 of the bracket 23 is movably attached to a lower end 22 of a holding means 19 and that the holding means 19 is inserted into the channel 07 together with the bracket 23 and the spring 31.
• an abutment 37 of an actuating means 36 which serves to actuate the holding means 19 can be movably attached to the holding means 19 before the holding means 19 is inserted into the channel 07.
• the holding means 19, the bracket 23 and the spring 31 form an effective device in the channel 07 for fastening one on a cylinder 01 one Rotary printing machine to be installed 03.
• the actuating means 36 counteracts the contact pressure exerted by the spring 31 via the holding means 19 on the wall 09, which extends from the rear edge 17 of the opening 11, so that, when the adjusting means 36 is actuated, the contact pressure with the holding means 19 on the wall 09 release caused clamping if necessary.
• the adjusting means 36 is preferably a hose 36 running in the longitudinal direction of the channel 07, which is connected to a pressure medium, for. B. compressed air can be applied and can be surrounded by an abutment 37.
• the abutment 37 of this actuator 36 can, for. B.
• the abutment 37 can be formed with an integrally formed on the abutment 37 tab in at least one opening of the holding means 19, for. B. be hung in a hole or a punched. This attachment of the abutment 37 can, for. B. also take place in the same, correspondingly larger breakthrough of the holding means 19, in which the lower leg 26 of the bracket 23 is suspended, so that the tab on the abutment and the tab 28 on the lower leg 26 of the bracket 23 come to lie on each other.
• an abutment 37 suspended on the holding means 19 should also remain movable transversely to the holding means 19 in order to be able to support the abutment 37 on the wall 12 of the channel 07 at least when the adjusting means 36 is actuated. It can also be advantageous in embodiments in which the adjusting means 36 and its abutment 37 are designed as a single component, in that a reversibly deformable hollow body such as, for. B. a pressurizable hose except on the side facing the holding means 19 z. B.
• the abutment 37 is stiffened by an encapsulation with plastic, in which stiffened outer wall of the adjusting means 36 at least one preferably metallic tab for the attachment of the abutment 37 integrally connected to the adjusting means 36 is introduced into an opening of the holding means 19.
• the Setting means 36 may not be necessary to dispense with an abutment 37 in the form described here.
• a further embodiment variant provides for the abutment 37 to be designed as a strip which extends in the axial direction of the channel over its entire length, the abutment on the end faces of the cylinder, for. B. is fastened by screwing.
• the strip is advantageously designed in such a way that it can be threaded into the channel 07 through the slot-shaped opening 11 or can be guided out of it by a rotary movement about an axis parallel to the cylinder.
• FIG. 4 An advantageous embodiment of the spring 31, which is placed on the tab 29 formed on the upper leg 27 of the bracket 23, is shown in FIG. 4.
• the spring 31 in this example has a retracted last turn with which the spring 31 is adapted to the width b of the tab 29 and can be fitted onto the tab 29 by means of an interference fit.
• the width b of the tab 29 may z. B. 3 mm to 10 mm, preferably 5 mm.
• the length I of the tab 29 can, for. B. are between 6 mm and 15 mm.
• a spring 31 with a retracted last turn widens with its inner diameter d over the length I of the tab 29, the inner diameter d at the end with which the spring 31 is supported on the holding means 19, for. B.
• the end face 38 of the tab 29 serves as a stop 38 for limiting a pivoting movement of the holding means 19 between the bracket 23 and the holding means 19, the pivoting movement of the holding means 19 being directed towards the bracket 23.
• the stop 38 prevents the coil spring 31 arranged between the bracket 23 and the holding means 19 from being pressed onto a block.
• FIGS. 5 and 6 A further embodiment of the arrangement of the spring 31 on the tab 29 is shown in FIGS. 5 and 6.
• a sleeve 39 which is preferably made of plastic, has a bore 41 or a blind hole 41, with which or with which the sleeve 39 on the Tab 29 is attachable. Alternatively, such a sleeve 39 can also be applied directly to the suitably shaped upper leg 27 of the bracket 23.
• the spring 31 is in turn placed on the sleeve 39.
• the end face of the sleeve 39 in turn limits the stroke of the spring 31.
• FIG. 7 Another variant of the proposed device is shown in FIG. 7.
• the bracket 23, in particular a dimensionally stable bracket 23 made of a metallic material, is supported on the one hand near its one end on the wall 08 of the opening 11 extending at an acute angle ⁇ to the channel 07 and on the other hand with its other end at the second lower end End 22 of the holding means 19.
• a spring 31 arranged between the bracket 23 and the holding means 19 essentially parallel to the tangent T resting on the opening 11 spreads the bracket 23 and the holding means 19 apart, whereby the spring 31 exerts a force on the support points of the bracket 23 and for fixing of the holding means 19 contributes in its bearing and pivot point in the groove 18.
• the spring 31 is preferably designed as a helical spring 31. 7, the coil spring 31 is shown with an interrupted turn for the sake of clarity.
• the spring 31 is attached to a pin 43, the pin 29 preferably being formed on a plate 42, the plate 42 being attached to the holding means 19 on its side facing away from the bracket 23.
• B. at least one opening 44, but advantageously a plurality of openings 44 into which an attached to the plate 42, z. B. molded pin 43 can be clipped.
• the plate 42 is fastened to the holding means 19 by the pins 43 clipped into the openings 44.
• the spring 31 is advantageously attached to at least one of the pins 43.
• the bracket 23 has at one end, with which it is attached to the holding means 19, advantageously a T-shaped tab 28 which is suspended in a preferably also T-shaped opening on the holding means 19. This design of tab 28 and opening in the holding means 19 allow the bracket 23 to be rotatably supported on the holding means 19, but they secure the bracket 23 against unintentional removal from the holding means 19.
• the plate 42 attached to the holding means 19 is advantageously designed such that after it is attached to the holding means 19 it covers the T-shaped opening on the holding means 19 to such an extent that the T-shaped tab 28 on the bracket 23 can no longer be removed from the holding means 19 , The plate 42 thus secures the bracket 23 additionally against unintentional removal from the holding means 19.
• the plate 42 can, for. B. be made of a plastic.
• the adjusting means 36 arranged in the channel 07 exerts a force on an abutment 37, which is arranged in a stationary manner in the channel 07, preferably in the form of a shell, and on the plate 42 attached to the holding means 19.
• the abutment 37 is, for. B. formed as a fixed to the end faces of the cylinder 01 bar.
• a leg 27 of the bracket 23 is directed towards the holding means 19.
• the end face 38 of the leg 27 forms a stop 38, against which the holding means 19 strikes during a pivoting movement triggered by the adjusting means 36 and directed towards the bracket 23.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Supply, Installation And Extraction Of Printed Sheets Or Plates (AREA)
• Clamps And Clips (AREA)
• Prostheses (AREA)
• Rotary Presses (AREA)
• Automatic Assembly (AREA)

Applications Claiming Priority (3)

Publications (2)

Family

ID=31895543

Family Applications (1)

Country Status (7)

Families Citing this family (4)

Family Cites Families (5)

• 2002
  • 2002-08-12 DE DE10236867A patent/DE10236867B3/de not_active Expired - Fee Related
• 2003
  • 2003-08-01 ES ES03794776T patent/ES2341444T3/es not_active Expired - Lifetime
  • 2003-08-01 DE DE50312710T patent/DE50312710D1/de not_active Expired - Lifetime
  • 2003-08-01 AU AU2003250805A patent/AU2003250805A1/en not_active Abandoned
  • 2003-08-01 EP EP03794776A patent/EP1528983B1/fr not_active Expired - Lifetime
  • 2003-08-01 US US10/523,989 patent/US7302889B2/en not_active Expired - Fee Related
  • 2003-08-01 AT AT03794776T patent/ATE467509T1/de active
  • 2003-08-01 WO PCT/DE2003/002597 patent/WO2004024449A1/fr not_active Application Discontinuation

Non-Patent Citations (1)

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