EP0802050B1 - Dispositif pour la mise en tension par voie pneumatique d'un cylindre creux à paroi mince et procédé pour fabriquer un tel dispositif - Google Patents

Dispositif pour la mise en tension par voie pneumatique d'un cylindre creux à paroi mince et procédé pour fabriquer un tel dispositif Download PDF

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Publication number
EP0802050B1
EP0802050B1 EP96106032A EP96106032A EP0802050B1 EP 0802050 B1 EP0802050 B1 EP 0802050B1 EP 96106032 A EP96106032 A EP 96106032A EP 96106032 A EP96106032 A EP 96106032A EP 0802050 B1 EP0802050 B1 EP 0802050B1
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EP
European Patent Office
Prior art keywords
clamping sleeve
sleeve
process according
tube
clamping
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
Application number
EP96106032A
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German (de)
English (en)
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EP0802050A1 (fr
Inventor
A.M. Van Der Meulen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schablonentechnik Kufstein GmbH
Original Assignee
Schablonentechnik Kufstein GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Schablonentechnik Kufstein GmbH filed Critical Schablonentechnik Kufstein GmbH
Priority to DE59600536T priority Critical patent/DE59600536D1/de
Priority to AT96106032T priority patent/ATE170800T1/de
Priority to ES96106032T priority patent/ES2123313T3/es
Priority to EP96106032A priority patent/EP0802050B1/fr
Publication of EP0802050A1 publication Critical patent/EP0802050A1/fr
Application granted granted Critical
Publication of EP0802050B1 publication Critical patent/EP0802050B1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
    • B41C1/00—Forme preparation
    • B41C1/14—Forme preparation for stencil-printing or silk-screen printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F15/00—Screen printers
    • B41F15/14—Details
    • B41F15/34—Screens, Frames; Holders therefor
    • B41F15/38—Screens, Frames; Holders therefor curved

Definitions

  • the invention relates to a device for pneumatic clamping thinner Hollow cylinder according to the preamble of claim 1 and a method for producing such a device according to claim 14.
  • Hollow cylinders can be understood as the starting form for the generation of rotary printing stencils.
  • Thin flexible hollow cylinders are used in many different ways as starting forms used for the production of stencils.
  • This hollow cylinder are coated from the outside with varnish, which can be sensitive to light.
  • This layer of lacquer can be engraved with a pattern using various methods. The result is a screen printing stencil.
  • Another type of one Hollow cylinder consists of a closed and about 0.2 mm thin or even a little thicker nickel tube, which has a 2 to 5 mm thick outside Wearing a coat made of a photoelastomer. This hollow cylinder becomes a flexographic printing form processed.
  • the ones for the printing process are used for the training necessary, patterned structure operations required in which these thin, flexible hollow cylinder stretched and also over the entire length have to run as precisely as possible and with respect to the driving device must not have any slip.
  • a flexographic printing plate as an example mentioned which during exposure in an exposure machine is slowly rotated, at the same time a biased in the direction of movement Film rolls tangentially to it. No irregularities are allowed in this movement due to a fluctuating distance from the axis of rotation of the Flexographic printing roller can be entered.
  • the printing form must therefore be non-slip a carrier mandrel or a carrier roller and the last may also have no runout errors.
  • the slotted sleeve must have areas in which the tension acting in the circumferential direction is not interrupted is so that these areas the roundness of the exciting slotted sleeve and thus of the entire association.
  • the invention has for its object a device of the aforementioned Form for the pneumatic clamping of thin hollow cylinders, that it has a simpler structure.
  • the aim of the invention is also specify a suitable method for producing such a device.
  • the device-side solution of the task is in the characteristic Part of claim 1 specified.
  • a device for the pneumatic clamping of thin hollow cylinders is characterized in that the elastic material on the clamping sleeve is attached.
  • This is a unit consisting of an adapter sleeve and elastic sealing material for the wall-side through openings of the adapter sleeve Available in a simple manner on a conventional engraving machine can be used to pneumatically clamp a thin hollow cylinder Production of a rotary printing template on the engraving machine accordingly must be processed.
  • the engraving machine must of course have one Inlet for supplying a pressure medium to be provided by the Apply elastic pressure to the elastic material of the sealed adapter sleeve to be able to.
  • the clamping sleeve is stored in the engraving machine so that the pressure medium cannot escape from the front.
  • the adapter sleeve itself is preferably made of metal, z. B. made of electrolytic nickel be constructed. But it can also consist of a suitable plastic, especially if the thin hollow cylinder to be pneumatically clamped ensures the required roundness itself.
  • the elastic material for sealing the wall-side openings of the adapter sleeve can e.g. B. rubber or plastic. This material can initially be found in applied in liquid form and then solidified, for. B. by vulcanization or networking. Also a repeated or multiple coating with this material is possible.
  • the elastic material can also but can also be used in solid form, for example as Rubber hose or as a plastic film hose of suitable wall thickness.
  • a method according to the invention for producing a device for pneumatic Clamping thin hollow cylinders includes the following steps: Deployment an adapter sleeve provided with through-openings on the wall; and definitely Attach a lining made of elastic material to the inside of the Adapter sleeve at least in the area of the through openings.
  • the adapter sleeve is therefore replaced by a dense, elastic lining sealed on the inside of the adapter sleeve, whereby this lining is only worn by the adapter sleeve itself.
  • FIG. 2 show an adapter sleeve 1 designed according to the invention, which is designed as a slotted sleeve.
  • the outer jacket 2 is made of nickel galvanoplastic constructed and carries a plurality of axially parallel, short slots 4.
  • an elastic lining 3 is applied, which can have a wall thickness of 0.1 to 3 mm.
  • Such a slotted sleeve can also be produced by a laser cutting process will.
  • FIG. 3 it is shown how the elastic lining 3 using a vertical coating machine 6 can be applied.
  • Basic receptacle 7 In the lower area of FIG. 3 is located above the base plate 5 of the vertical coating machine 6 Basic receptacle 7.
  • a Liquid polymer supply 11 In this there is an inner ring doctor 8 and in the ring region 9 between Base receptacle 7 and central body upper part 10 of the inner ring doctor 8 is a Liquid polymer supply 11 introduced.
  • Between the central body upper part 10 and Central body lower part 12 is a sealing lip 13 with a bead-shaped outer edge clamped.
  • the slotted sleeve 1 is inserted into the machine and through the Slotted sleeve 1, four wire ropes 15 are lowered.
  • the slit sleeve 1 becomes horizontal as quickly as possible after the coating has been carried out in a vulcanization cabinet, no longer shown, on rotating rollers which keep the sleeve rotating during vulcanization. The is necessary, because otherwise the viscous layer 16 either to an end face End or flow into a radial sector of the slotted sleeve 1 and collect there and would vulcanize in a useless way.
  • the receiving ring 18 with its Bear 20 and together with the inner ring doctor located in the receiving ring 18 8 moved down along the guides 19 until the receiving ring 18 on the base seat 7 sits. Then the inner ring doctor 8 by hand downwards encountered.
  • the receiving ring 18 is now moved up again. The The machine is then ready for coating another slot sleeve.
  • the inner ring doctor 8 here consists of an annular plate 26, which their outer circumference sealed by an O-ring 27 against the slotted sleeve 1 becomes.
  • the ring plate 26 carries a hub 28 into which a vertical, engages as a hollow shaft guide mandrel 29.
  • This guide pin 29 is tapered at the lower end and a plunger 30 runs in it Wall of the taper 31, several openings are provided distributed around the circumference, in which steel balls 32 are located.
  • the inner ring doctor 8 is now in the Guide ring 41 raised, liquid polymer is refilled to the used one Quantity to replace, and together with the guide ring 41, the guide mandrel 29 and the inner ring doctor 8 moved back into the upper starting position. Another coating process can begin.
  • a servo cylinder 43 which actuates the plunger 30.
  • the servo cylinder is supplied via the hydraulic lines 43a. This will make it described coupling and uncoupling the ring doctor 8 causes.
  • Rubber lining also an adhesive - this then relatively thin about 0.1 mm - Be applied on the inside of the slotted sleeve 1.
  • This glue can serve for the permanent attachment of an already vulcanized hose.
  • the rubber lining can also be a cross-linkable, preferably elastic liquid polymer (polyester or epoxy resin) with the device shown be applied.
  • More robust liners should, however, be one Have a wall thickness of 1 to 3 mm. So big wall thicknesses have to either from highly viscous, possibly even thixotropic liquids be applied or in a multiple coating process with intermediate Vulcanization or hardening processes are produced.
  • FIG. 7 and 8 show how to coat a contact adhesive Can introduce rubber hose 47.
  • the Hose 47 which is to be glued to the slotted sleeve 1, first in the direction whose axis are completely retracted into the slotted sleeve 1 without it may touch them.
  • the hose 47 must then along a jacket-generating Inside of the slotted sleeve 1 are brought into contact and then this contact can be extended to the entire inner surface of the slotted sleeve 1 will.
  • the inside is equipped with glue Slotted sleeve 1 placed on a part.
  • This frame consists of several Frame 52, the spars 53 and a semicircular trough 54 with each other are connected.
  • a carriage 55 carries the hose 47, which is one crescent-shaped hollow channel 56 was drawn.
  • This hollow channel 56 consists of an outer circular segment-shaped sheet metal jacket 57 and the same inner sheet metal jacket 58, which is closed by two pole caps 59 Enclose cavity 60. If a vacuum is generated in this cavity 60, air is then sucked in from the outside via the bores 61 and the hose 47 can thereby be caused to lie closely against the sheet metal channel 54. In order to due to the vacuum generated, the hollow channel 56 does not implode, keep spacers 60a balance the external overpressure. The hose is lying 47 on the hollow channel 56, is applied to this contact adhesive.
  • the left The end face of the hollow channel 56 is on the lowerable upper part 62 of a hoist 63 attached.
  • the hoist 63 is mounted on a carriage 64, which with its Wheels 65 runs in rails 66.
  • the prepared one Hose 47 on the trough 56 and the carriage 64 in the inside slotted sleeve 1 fitted with adhesive.
  • the hose 47 slowly lowered by means of the lifting mechanism 63, then the hose 47 touches the Slotted sleeve 1 first in area 67 and connects there with this. After this Lowering the slotted sleeve 1 is now slowly rotated, so that gradually all Circumferential locations of the outside of the tube 47 with those of the inside of the Slit sleeve 1 come into contact and also glue.
  • the slotted sleeve 1 lies in a device which, among other things, consists of two frames 52, spars 53 and three rollers 68 consists.
  • two brackets 69 are on the two frames 52 via joints attached to the end bearings of the bottom roller 68.
  • the spindles 70 are provided on each of the two frames 52 and they are connected to one another by a chain drive 72, so that when the button shown in FIG.
  • the three rollers 68 are also connected to one another by chain drives 74.
  • another chain drive 75 leads to the geared motor 76.
  • a hose roller carriage 78 which together in the interior of the slit sleeve 1 introduced with a rubber hose 47 already equipped with adhesive must be arranged so far apart in the vertical direction that the required circumferential length of the hose 47 on the rollers 77th can be placed without the hose 47 while it is in the slotted sleeve 1 is introduced, touches this.
  • the rollers 77 of the roller carriage 78 are on one their ends on an upper part 62 of a hoist 63. Furthermore can also these rollers 77 by means of a gear motor 86 and chain drives 79 all driven at the same speed.
  • cylindrical rollers 81 and notch rollers 82 are attached on a base plate 80 of the roller carriage 78.
  • the notch rollers 82 run on a prismatic rail 83 and hold so the roller carriage 78 during the insertion of the hose 47 into the slot sleeve 1 on a precise track across the direction of travel.
  • the cylindrical rollers 81 and the notch rollers 82 are individually supported on rigid axles 85.
  • the slit sleeve 1 is first with a Covered heat shrink tubing 88, which is the leakage of the for coating liquid latex or prepolymer used through the slots the slotted sleeve 1 prevented. Then the slotted sleeve 1 into the device inserted. This carries the slotted sleeve 1 on a strong roller 87, on both End faces is mounted and on its right end face via a gear 89 and a motor 90 is rotated. Spars 91 connect the left one the right support structure 92 - only the right side is shown in FIGS. 12, 13.
  • the slit sleeve 1 is held by support rollers 93, which can be adjusted to the diameter of the slotted sleeve 1, so that the slotted sleeve 1 does not lose its position relative to the roller 87.
  • a rigid doctor blade 94 which is supported by supports 95 is attached to a strong bending beam 96.
  • the bending beam 96 protrudes from the slotted sleeve 1 and ends in an adjusting nut 97.
  • each end of the bending beam 96 is now set so that the doctor blade 94 a defined distance from the inside of the Slit sleeve 1 takes. This distance is chosen so large that it is the intended one Layer thickness of the lining 3 corresponds.
  • a defined amount of latex or prepolymer is now introduced into the interior of the slotted sleeve 1, then the slotted sleeve 1 is rotated. The doctor blade 94 distributed the prepolymer during a few revolutions of the slotted sleeve 1 evenly over the inside of the slotted sleeve 1.
  • baffle plate 100 is provided there, which flows out polymer pushes back into the application area.
  • the baffle 100 must of course do not consist of metallic materials, but it is preferred a thermoplastic with good sliding properties can be used.
  • the slotted sleeve 1 is placed in a base plate 101, which has a strong centering edge 102 is equipped for receiving the slotted sleeve 1.
  • the bottom plate 101 is with an outlet 103, an outlet line 104 and a shut-off valve 105.
  • the slit sleeve 1 is also by a bracket 106 on its upper Centered end.
  • the bracket 106 is supported on guide rods 114.
  • Above the slotted sleeve 1 is the hose 47 to be glued to a hose frame 107 mounted.
  • the tube 47 is already on the outside with contact adhesive coated and also the inside of the slotted sleeve 1.
  • the tube frame 107 consists of a central tube 108 and two conical hose receptacles 109.
  • the largest outer diameter of the hose receptacle 109 is approximately the same size as the inside diameter of the tube 47, which only has a small diameter Suit provided outer cone jacket of the hose receptacle 109 is pressed on by a suitable thin ring 110. That way the hose 47 between the hose receptacles 109 largely free of tension captured.
  • the hose receptacles 109 can be on the central tube 108 Different lengths of the hose 47 and the slotted sleeve 1 can be set.
  • the central tube 108 is fastened in a vertical guide slide 111 which can be moved up or down by ropes 112.
  • the hose frame 107 with the hose 47 is in the lowest Position.
  • the lower hose receptacle 109 sits tightly on the base plate 101 open, the valve 105 is closed.
  • Now z. B. water through one Filler neck 118, which is inserted through the holes 115 and 116, in the cavity delimited by the hose 47 and the hose receptacles 109 let in. Through holes 117, this liquid can also in the Interior of the central tube 108 and the drainage area 103, 104 of the base plate 101 get to the blocked valve 105. Because the liquid temporarily from there cannot emerge, it jams in the hose 47 and stretches it up to the system on the slotted sleeve 1.
  • the hose 47 sticks to the Slotted sleeve 1. If you use hot or hot water, you can already contact adhesive that has become inactive can be reactivated, this can be advantageous be if you leave the contact adhesive for a long time after applying it lets to a too great willingness to react during the retraction of the To prevent hose 47 in the slotted sleeve 1. This stretching process is detected gradually increasing the entire tube 47 from bottom to top and stretching this slightly but over the entire circumference with completely even tension. If the interior of the hose 47 is completely filled with liquid, if necessary can be filled a little higher in the filler neck 118, then also lies the hose 47 up to the slotted sleeve 1 under pressure and glued to this.
  • the liquid can be drained by opening valve 105. It now the slotted sleeve 1 together with the tubular frame 107 from the device taken. Since the end faces are now accessible, the Hose receptacles 109 are detached from hose 47 and, if necessary, together are pulled out of the tube 47 with the central tube 108. Protruding or non-glued parts of the tube 47 can be separated or be glued. It is of course possible to use liquid instead admit air under slight overpressure into the hose roller. A Any necessary heating can then be done by blowing the outer surface the slotted sleeve 1 can be effected with warm air.
  • FIG. 16 shows a pouring method as a method for lining the slotted sleeve 1 presented.
  • the slotted sleeve 1 between two cone receptacles 121 and 122 clamped similar to a lathe.
  • the cone seat 121 is rotatably mounted in the headstock 123 and is by one in the headstock 123 provided motor driven. The rotary movement (about 100 to 500 rpm) is therefore given the slotted sleeve 1.
  • the cone receptacle 122 is rotatable stored in tailstock 124.
  • the slotted sleeve 1 becomes a displaceable feed pipe 125 with a casting head 125a pushed through the tailstock 124 into the interior of the slotted sleeve 1 and brings the still liquid prepolymer or latex into it.
  • the latex on the inner wall of the slotted sleeve 1st hurled and distributed evenly under the effect of centrifugal force over the inner surface.
  • the outlet opening is at the beginning of the pouring of the feed pipe 125 in a starting position immediately next to the Cone receptacle 121.
  • the feed pipe 125 is then slowly added right, i.e.
  • the vulcanization on the casting machine eliminates any unevenness Lining thickness avoided by a flow of the prepolymer or the latex during the insertion of the slot sleeves into the vulcanization cabinet could arise.
  • the slotted adapter sleeve, before it is clamped in the casting machine, with a shrink tube are coated so that the prepolymer emerges through the slots is prevented.
  • Heat shrink tubing should be heat resistant and the lining layer should also then heated via hot air introduced into the interior of the slit clamping sleeve or be polymerized. The hot air can via a hollow shaft, for. B. in Headstock 123.
  • FIG. 17 shows the mounting of the slotted sleeve 1 on the cone receptacle 121.
  • a removable end head 131 is inserted into the left end of the slotted clamping sleeve 1.
  • the outer diameter of this end head 131 fits with very little Play in the inner diameter of the slotted sleeve 1.
  • Detachable around this end head 131, but still to be firmly connected to the slotted clamping sleeve 1 becomes an O-ring 132 pressed between end head 131 and a flange 133.
  • the o-ring 132 deviates outwards in the direction of the slotted sleeve 1 and fixes itself on the inside wall.
  • the end head 131 thus fulfills two tasks, namely a storage option for the end of the slotted clamping sleeve 1 on the To create cone receptacle 121 and also the leakage of the liquid latex or to prevent the prepolymer.
  • the cone seat engages in a bore 134 121 and holds the slotted clamping sleeve 1 in a centered position.
  • the slotted sleeve 1 is also gripped via a driver 135. The beginning of the pouring can be seen in the figure. A small part of the prepolymer has flowed from the feed pipe 125 into the slotted clamping sleeve 1.
  • the cone receptacle 122 is in the ball bearing 136 Tailstock 124 mounted and driven by the slotted sleeve 1. So that Slot clamping sleeve 1 does not bulge due to a temperature-related expansion, the left ball bearing 136 with the help of axial spring washers 141 in the elastic Tailstock 124 arranged. The other ball bearing 136 can move in the axial direction move freely anyway.
  • the feed pipe 125 is mounted in a hollow shaft 143 and performed in this.
  • the hollow shaft 143 is plastic lined provided that has good sliding properties.
  • the hollow shaft 143 is with the cone receptacle 122 z. B. connected in one piece.
  • FIG. 19 shows the support of the feed pipe 125 in the end head 128.
  • a crosshead 144 is fastened, which is a deflection roller 145 for the timing belt 130 carries.
  • a toothed belt drive wheel on tailstock 124 146 mounted, which is from a geared motor 147 via a toothed belt drive 148 is driven.
  • the end head 128 is clamped on the toothed belt 130 and is therefore moved by the toothed belt 130.
  • FIG. 20 is schematically the spraying of the slot clamping sleeve 1 by a Spray head 150 shown.
  • Something diluted with solvent emerges from the spray head 150 Prepolymer in the form of a spray mist 151 and covers the inner wall the slot clamping sleeve 1.
  • the spray head 150 is in the slot clamping sleeve 1 moved vertically upwards.
  • the spray head 150 has a number of openings 152 through which the dilute prepolymer emerges.
  • the spray head 150 oscillates around a small swivel angle the central axis 153 of the slot clamping sleeve 1. This swivel angle is a little greater than the angular pitch at which the openings 152 are arranged are. This oscillation serves to even out the coating.
  • Fig. 21 shows a further design of the slot clamping sleeve 1. It becomes a flat here developed section of the slotted clamping sleeve 1 shown.
  • the slotted adapter sleeve 1 consists of an outer sleeve 154 and an inner sleeve 155.
  • the outer sleeve 154 has narrow slots 157 with wide ones in between Bars 156.
  • Inner sleeve 155 has narrow bars 158 and wide slots 159 on.
  • the two sleeves 154 and 155 also differ slightly in diameter and are inserted into each other so that the slots 157 are always covered by webs 158 while the slots 159 are covered by the webs 156.
  • This double slotted sleeve is also provided with an elastic inner lining, however, this is no longer shown.
  • an elastic inner lining Through the inner lining the two slotted sleeves 154, 155 fixed in their mutual position and of course sealed against air leakage as before.
  • Such a double slot adapter sleeve can also be used when a sieve sleeve is closed span is which z. B. must be treated on a laser engraver. The focused one Laser beam would instantly cover the lining or one Perforate the rubber sleeve lining the slot clamping sleeve if this (this) would lie unprotected behind a gap 157.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Jigs For Machine Tools (AREA)
  • Air Bags (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Combined Devices Of Dampers And Springs (AREA)
  • Fluid-Damping Devices (AREA)
  • Actuator (AREA)
  • Coating Apparatus (AREA)

Claims (32)

  1. Dispositif de bridage pneumatique de cylindres creux minces, présentant une douille de serrage (1) ayant des ouvertures de passage (4) situées côté paroi ainsi qu'un matériau élastique (3), pour assurer l'isolation étanche des ouvertures de passage (4), caractérisé en ce que le matériau élastique (3) est fixé à la douille de serrage (1).
  2. Dispositif selon la revendication 1, caractérisé en ce que, sur la douille de serrage (155), est placée une autre douille de serrage (154) ayant des ouvertures de passage (157) situées côté paroi, qui ne chevauchent pas les ouvertures de passage (159) de la douille de serrage (155) citée en premier.
  3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les douilles de serrage (1; 155, 154) sont en métal.
  4. Dispositif selon la revendication 1, 2 ou 3, caractérisé en ce que les ouvertures de passage (4; 159, 157) sont des fentes orientées en direction longitudinale des douilles de serrage (1; 155, 154).
  5. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le matériau élastique constitue un revêtement intérieur (3, 16) de la douille de serrage (1).
  6. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que le matériau élastique se présente sous la forme d'un tuyau (47).
  7. Dispositif selon la revendication 6, caractérisé en ce que le tuyau (47) est collé à la face intérieure de la douille de serrage (1).
  8. Dispositif selon la revendication 7, caractérisé en ce que le tuyau (47) est collé toute sur sa longueur à la face intérieure de la douille de serrage (1).
  9. Dispositif selon la revendication 7 ou 8, caractérisé en ce qu'entre le tuyau (47) et la face intérieure de la douille de serrage (1) est placée une couche d'un promoteur d'adhésion.
  10. Dispositif selon la revendication 6, caractérisé en ce que le tuyau (47) est pressé avec serrage contre la face intérieure de la douille de serrage (1) au moyen de dispositifs (44 à 46) insérés dans les faces frontales de la douille de serrage (1).
  11. Dispositif selon la revendication 10, caractérisé en ce que la douille de serrage (1) présente, dans la zone du serrage, des ouvertures de perforation (49) dans lesquelles le tuyau (47) est enfoncé.
  12. Dispositif selon la revendication 10 ou 11, caractérisé en ce que chaque dispositif présente une tête d'extrémité (44) et au moins un disque de compression (45) entre lequel et la tête d'extrémité (44) est enserré un joint torique (46) qui est pressé radialement vers l'extérieur.
  13. Dispositif selon la revendication 12, caractérisé en ce que la tête d'extrémité (44) est collée à la face intérieure de la douille de serrage (1).
  14. Procédé de fabrication d'un dispositif de bridage pneumatique de cylindres creux minces, présentant les étapes ci-après :
    préparation d'une douille de serrage (1) pourvue côté paroi d'ouvertures de passage (4); et
    montage définitif d'un revêtement (3, 16, 47) en matériau élastique sur la face intérieure de la douille de serrage (1) au moins dans la zone des ouvertures de passage (4).
  15. Procédé selon la revendication 14, caractérisé en ce que le revêtement (16) est constitué, lorsque la douille de serrage (1) est montée verticalement, par application d'un liquide solidifiable sur la face intérieure de la douille de serrage (1), au moyen d'une racle annulaire intérieure (8) (figures 3, 4).
  16. Procédé selon la revendication 15, caractérisé en ce que la racle annulaire intérieure (8) est déplacée du bas vers le haut et l'application de liquide s'effectuant par l'intermédiaire d'une lèvre d'étanchéité (13) à forme annulaire (figure 3).
  17. Procédé selon la revendication 15, caractérisé en ce que la racle annulaire intérieure (8) est déplacée de haut en bas et l'application de liquide s'effectuant par un revêtement par immersion (figure 4).
  18. Procédé selon la revendication 14, caractérisé en ce que le revêtement est constitué par coulée d'un liquide solidifiable sur la face intérieure de la douille de serrage (1), au moyen d'une tête de coulée (125a) qui se déplace dans la direction axiale de la douille de serrage (1) lorsque celle-ci est en rotation (figure 16).
  19. Procédé selon la revendication 14, caractérisé en ce que le revêtement est constitué par pulvérisation d'un liquide solidifiable sur la face intérieure de la douille de serrage (1) au moyen d'une tête de pulvérisation (150) qui tourne autour de l'axe longitudinal (153) de la douille de serrage (1) et est déplacée dans sa direction longitudinale (figure 20).
  20. Procédé selon la revendication 19, caractérisé en ce que la tête de pulvérisation (150) présente plusieurs ouvertures de sortie de pulvérisation (152) et oscille autour de l'axe longitudinal (153) (figure 20).
  21. Procédé selon la revendication 14, caractérisé en ce que le revêtement (3), lorsque la douille de serrage (1) est placée horizontalement, est constitué par application d'un liquide solidifiable sur la face intérieure de la douille de serrage (1) au moyen d'une racle d'enduction (94) qui s'étend dans la direction longitudinale de la douille de serrage (1), lorsque la douille de serrage (1) est en rotation (figure 12).
  22. Procédé selon l'une des revendications 18 à 21, caractérisé en ce que la douille de serrage (1) porte un tuyau rétractable (88) lors de l'application du revêtement (figure 12).
  23. Procédé selon la revendication 14, caractérisé en ce que le revêtement se présentant sous la forme d'un tuyau (47) est inséré à l'intérieur de la douille de serrage (1) et le tuyau (47) est fixé sur la douille de serrage (1) (figures 5, 7, 9, 14).
  24. Procédé selon la revendication 23, caractérisé en ce que le tuyau (47) est pressé dans la zone de ses extrémités en permanence contre la face intérieure de la douille de serrage (1), pour assurer la fixation sur la douille de serrage (1) (figure 5).
  25. Procédé selon la revendication 23, caractérisé en ce que le tuyau (47) est collé de préférence sur toute sa longueur à la face intérieure de la douille de serrage (1) (figures 7, 9, 14).
  26. Procédé selon la revendication 25, caractérisé en ce que le collage s'effectue par l'intermédiaire d'une couche d'un promoteur d'adhésion.
  27. Procédé selon la revendication 25 ou 26, caractérisé en ce que le tuyau (47) est tiré sur un bâti-support (56; 77) et est déplacé à l'intérieur de la douille de serrage (1), en présentant sur le bâti-support, dans la direction périphérique, un tronçon convexe et un tronçon concave, en étant mis en contact par le tronçon convexe avec la douille de serrage (1), puis lors de la rotation de la douille de serrage (1) étant dégagé du bâti-support et transféré à la face intérieure de la douille de serrage (1) (figures 7, 9).
  28. Procédé selon la revendication 27, caractérisé en ce que la douille de serrage (1) est, pendant l'introduction du bâti-support et l'application du tuyau (47), déformée sur sa face intérieure pour prendre une allure ovale (figure 9).
  29. Procédé selon la revendication 25 ou 26, caractérisé en ce que le tuyau (47) est déplacé, en étant arrondi, à l'intérieur de la douille de serrage (1) et est exposé à une pression intérieure.
  30. Procédé selon la revendication 29, caractérisé en ce qu'un milieu liquide est coulé à l'intérieur du tuyau (47) lorsque la douille de serrage (1) est installée verticalement.
  31. Procédé selon l'une des revendications 15 à 22, caractérisé en ce que la solidification du liquide s'effectue par traitement thermique.
  32. Procédé selon l'une des revendications 25 à 30, caractérisé en ce que le collage s'effectue avec assistance d'un apport thermique.
EP96106032A 1996-04-17 1996-04-17 Dispositif pour la mise en tension par voie pneumatique d'un cylindre creux à paroi mince et procédé pour fabriquer un tel dispositif Expired - Lifetime EP0802050B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE59600536T DE59600536D1 (de) 1996-04-17 1996-04-17 Einrichtung zum pneumatischen Spannen dünner Hohlzylinder und Verfahren zur Herstellung einer derartigen Einrichtung
AT96106032T ATE170800T1 (de) 1996-04-17 1996-04-17 Einrichtung zum pneumatischen spannen dünner hohlzylinder und verfahren zur herstellung einer derartigen einrichtung
ES96106032T ES2123313T3 (es) 1996-04-17 1996-04-17 Dispositivo para tensar neumaticamente cilindros huecos finos y procedimiento para la fabricacion de un dispositivo de este tipo.
EP96106032A EP0802050B1 (fr) 1996-04-17 1996-04-17 Dispositif pour la mise en tension par voie pneumatique d'un cylindre creux à paroi mince et procédé pour fabriquer un tel dispositif

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP96106032A EP0802050B1 (fr) 1996-04-17 1996-04-17 Dispositif pour la mise en tension par voie pneumatique d'un cylindre creux à paroi mince et procédé pour fabriquer un tel dispositif

Publications (2)

Publication Number Publication Date
EP0802050A1 EP0802050A1 (fr) 1997-10-22
EP0802050B1 true EP0802050B1 (fr) 1998-09-09

Family

ID=8222679

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96106032A Expired - Lifetime EP0802050B1 (fr) 1996-04-17 1996-04-17 Dispositif pour la mise en tension par voie pneumatique d'un cylindre creux à paroi mince et procédé pour fabriquer un tel dispositif

Country Status (4)

Country Link
EP (1) EP0802050B1 (fr)
AT (1) ATE170800T1 (fr)
DE (1) DE59600536D1 (fr)
ES (1) ES2123313T3 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004015248A1 (de) * 2004-03-29 2005-10-13 Goss International Montataire S.A. Aufzughülse für einen Druckwerkzylinder einer Offsetdruckmaschine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL8800354A (nl) * 1988-02-12 1989-09-01 Kufstein Schablonentech Gmbh Spanwals alsmede inrichting voorzien van een dergelijke spanwals.

Also Published As

Publication number Publication date
ES2123313T3 (es) 1999-01-01
DE59600536D1 (de) 1998-10-15
EP0802050A1 (fr) 1997-10-22
ATE170800T1 (de) 1998-09-15

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