EP0802050A1 - 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
EP0802050A1
EP0802050A1 EP96106032A EP96106032A EP0802050A1 EP 0802050 A1 EP0802050 A1 EP 0802050A1 EP 96106032 A EP96106032 A EP 96106032A EP 96106032 A EP96106032 A EP 96106032A EP 0802050 A1 EP0802050 A1 EP 0802050A1
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EP
European Patent Office
Prior art keywords
clamping sleeve
hose
sleeve
clamping
openings
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
Application number
EP96106032A
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German (de)
English (en)
Other versions
EP0802050B1 (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 EP96106032A priority patent/EP0802050B1/fr
Priority to ES96106032T priority patent/ES2123313T3/es
Publication of EP0802050A1 publication Critical patent/EP0802050A1/fr
Application granted granted Critical
Publication of EP0802050B1 publication Critical patent/EP0802050B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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 the pneumatic clamping of thin hollow cylinders according to the preamble of patent claim 1 and a method for producing such a device according to patent claim 14.
  • a thin hollow cylinder is to be understood here in particular as a thin, circular cylindrical hollow cylinder which serves as the starting form for the production of rotary printing stencils.
  • Thin flexible hollow cylinders are used in a variety of ways as starting forms for the production of printing stencils.
  • such hollow cylinders are designed as large cylindrical sieves which have a diameter of 200 to 500 mm and a wall thickness of 0.08 to 0.2 mm.
  • These hollow cylinders are coated from the outside with varnish, which can be sensitive to light.
  • a pattern can be engraved into this lacquer layer using various methods. The result is a screen printing stencil.
  • Another type of such a hollow cylinder consists of a closed and about 0.2 mm thin or even somewhat thicker nickel tube, which is a 2 to 5 mm thick outside Wearing a coat made of a photoelastomer. This hollow cylinder is processed into a flexographic printing form.
  • the formation of the patterned structure required for the printing process requires operations in which these thin, flexible hollow cylinders must be tensioned and also run as precisely as possible over the entire length and must not have any slip with respect to the driving device.
  • An example is the case of a flexographic printing plate which is slowly rotated in an exposure machine during the exposure, at the same time a film that is biased in the direction of movement rolls approximately tangentially on it. No irregularities may be entered in this movement, for example due to a fluctuating distance from the axis of rotation of the flexographic printing roller.
  • the printing form must therefore be clamped non-slip on a carrier mandrel or a carrier roller and the last must also have no runout errors.
  • the slotted sleeve must have areas in which the tension acting in the circumferential direction is not interrupted, so that these areas ensure the roundness of the exciting slotted sleeve and thus the overall assembly.
  • the invention has for its object to develop a device of the type mentioned for pneumatic clamping thin hollow cylinder so that it has a simpler structure.
  • the aim of the invention is also to provide 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 is fastened to the clamping sleeve.
  • a unit consisting of an adapter sleeve and elastic sealing material is thus available for the wall-side through openings of the adapter sleeve, which can be used in a simple manner on a conventional engraving machine to pneumatically clamp a thin hollow cylinder, which has to be processed accordingly on the engraving machine in order to produce a rotary printing template .
  • the engraving machine must of course be provided with an inlet for supplying a pressure medium in order to be able to apply an internal pressure to the clamping sleeve sealed by the elastic material.
  • the clamping sleeve is stored in the engraving machine in such a way that the pressure medium cannot escape from the end.
  • the adapter sleeve itself is preferably made of metal, z. B. made of nickel galvanoplastic. However, it can also consist of a suitable plastic, in particular 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 clamping sleeve can, for. B. rubber or plastic. This material can first be applied in liquid form and then solidified, e.g. B. by vulcanizing or crosslinking. Repeated or multiple coating with this material is also possible.
  • the elastic material can also be used in a solid form, for example as a rubber tube or as a plastic tube tube with a suitable wall thickness.
  • a method according to the invention for producing a device for the pneumatic clamping of thin hollow cylinders comprises the following steps: provision of a clamping sleeve provided with through-openings on the wall; and attaching a lining made of elastic material to the inside of the clamping 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, this lining being worn only by the adapter sleeve itself.
  • FIGS. 1 and 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 and has 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 of course also be produced by a laser cutting process.
  • FIG. 3 shows how the elastic lining 3 can be applied using a vertical coating machine 6.
  • a base receptacle 7 above the base plate 5 of the vertical coating machine 6.
  • An inner ring doctor 8 is located therein and in the ring area 9 between the base receptacle 7 and the central body upper part 10 of the inner ring doctor 8 a liquid polymer supply 11 is introduced.
  • a sealing lip 13 with a bead-shaped outer edge is clamped between the central body upper part 10 and the central body lower part 12.
  • the slotted sleeve 1 is inserted into the machine and four wire cables 15 are lowered through the slotted sleeve 1.
  • the wire cables 15 are hung on the four cable fastenings 14, which later pull the inner ring doctor 8 upwards.
  • the slit sleeve 1 is now placed on the upper edge of the base receptacle 7 and centered at its other end by an upper receptacle ring 18.
  • the inner ring squeegee 8 is now pulled upwards and its sealing lip 13 slides over the inner surface of the slotted sleeve 1. Because of the large bead radius on the outer edge of the sealing lip 13, a more or less thick layer 16 of the liquid polymer remains, of course, depending on the drawing speed. This layer 16 becomes thicker as the viscosity of the polymer increases and also as the vertical pull rate increases.
  • the fluid-mechanical processes that lead to the production of this layer 16 correspond to the processes of a viscous flow in the tapering gap (Sommerfeld theory).
  • the inner ring squeegee 8 When the inner ring squeegee 8 has arrived at the upper edge of the slotted sleeve 1, it is pulled even further into the upper receiving ring 18 and then subsequently raised a little together with the latter.
  • the receiving ring 18 then slides together with the inner ring doctor 8 and guided by bearings 20 on guides 19 upwards.
  • the slotted sleeve 1 is thereby released at its upper end and can be tilted out of the base receptacle 7.
  • the ropes 15 run during the vertical movement through bores 21 in the head 25 via deflection rollers 22 to a winch 23 which pulls in all the ropes 15 evenly.
  • the cable winch 23 is driven by a gear motor 24.
  • the slotted sleeve 1 is placed as quickly as possible horizontally in a vulcanization cabinet (no longer shown) on rotating rollers which keep the sleeve rotating during the vulcanization. This is necessary because otherwise the viscous layer 16 would either flow to an end face or into a radial sector of the slotted sleeve 1 and would accumulate there and vulcanize it out in an unusable manner.
  • the receiving ring 18 with its bearings 20 and together with the inner ring doctor 8 located in the receiving ring 18 is moved down along the guides 19 until the receiving ring 18 is seated on the base receptacle 7. Then the inner ring doctor 8 is pushed downwards by hand. The receiving ring 18 is now moved up again. The machine is then ready to coat another slot sleeve.
  • FIG. 4 shows a vertical coating machine in which the coating process takes place in the manner of a dip coating by means of an inner ring doctor 8 which is moved vertically from top to bottom in order to obtain an inner lining 16.
  • the inner ring doctor 8 here consists of an annular plate 26 which is sealed on its outer circumference by an O-ring 27 against the slotted sleeve 1.
  • the ring plate 26 carries a hub 28, into which a vertical guide mandrel 29 designed as a hollow shaft engages.
  • This guide mandrel 29 is tapered at the lower end and a plunger 30 runs in it.
  • several openings are provided in the circumference, in which steel balls 32 lie.
  • the guide mandrel 29 is decoupled from the inner ring doctor 8, namely by pulling up the plunger 30.
  • the guide mandrel 29 is then raised.
  • an upper guide ring 41 is raised slightly and the slotted sleeve 1 is removed from the vertical coating machine 6 'and brought into a vulcanization cabinet.
  • the upper guide ring 41 is now moved downwards along a side guide 42 until it rests on the base receptacle 7.
  • the guide pin 29 is moved downward and coupled to the inner ring doctor 8 again by actuating the plunger 30.
  • the inner ring squeegee 8 is now lifted into the guide ring 41, liquid polymer is refilled to replace the amount used, and together with the guide ring 41, the guide mandrel 29 and the inner ring squeegee 8 are 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 causes the described coupling and uncoupling of the ring doctor 8.
  • an adhesive which is then relatively thin about 0.1 mm — can be applied to the inside of the slotted sleeve 1.
  • This adhesive can be used to permanently attach an already vulcanized hose.
  • a crosslinkable, preferably elastic liquid polymer polyester or epoxy resin
  • more robust linings should have a wall thickness of 1 to 3 mm. Wall thicknesses of this size must either be applied from highly viscous, possibly even thixotropic, liquids or manufactured in a multiple coating process with intermediate vulcanization or hardening processes.
  • the incompletely cross-linked polymeric liquids can give rise to various difficulties in the coating process. That is why it is also considered that the elastomeric lining on the inside of the slotted sleeve in the form of a solid, already polymerized rubber tube or as a plastic film tube appropriate wall thickness to apply.
  • FIG. 5 and 6 show such a thin rubber or plastic film tube inserted loosely into a slotted sleeve 1.
  • an end head 44 On the two end faces of the slotted sleeve 1 there is an end head 44, which is inserted into the slotted sleeve 1 and is glued to it at least in some areas.
  • end head 44 On the two end faces of the slotted sleeve 1 there is an end head 44, which is inserted into the slotted sleeve 1 and is glued to it at least in some areas.
  • compression washers 45 are provided in connection with the end head 44 and between them and the end head 44 O-rings 46 are provided. The hose 47 is pulled over the compression disks 45 and the O-rings 46.
  • FIG. 7 and 8 show how a rubber tube 47 coated with contact adhesive can be introduced. If the inside of the slotted sleeve 1 and the outside of the hose 47 is coated with contact adhesive, then the hose 47 which is to be glued to the slotted sleeve 1 must first be completely retracted into the slotted sleeve 1 in the direction of its axis without it being allowed to touch it . Subsequently, the tube 47 must be brought into contact along a jacket-generating inner side of the slotted sleeve 1, and this contact can then be extended to the entire inner surface of the slotted sleeve 1. For this purpose, the slotted sleeve 1, which is equipped with glue on its inside, is placed on a part.
  • This frame consists of a plurality of frames 52 which are connected to one another by bars 53 and a semicircular sheet metal groove 54.
  • a carriage 55 carries the hose 47, which was drawn around a crescent-shaped hollow channel 56.
  • This hollow channel 56 consists of an outer circular segment-shaped sheet metal jacket 57 and the same inner sheet metal jacket 58, which enclose a cavity 60 closed by two pole caps 59. If a vacuum is generated in this cavity 60, then air is sucked in from the outside via the bores 61 and the hose 47 can hereby be brought into close contact with the sheet metal channel 54. So that the hollow channel 56 does not implode due to the vacuum generated, spacer bolts 60a keep the external overpressure in balance.
  • the tube 47 lies against the hollow channel 56, this contact adhesive is applied.
  • the left end face of the hollow trough 56 is fastened to the lowerable upper part 62 of a lifting mechanism 63.
  • the hoist 63 is mounted on a carriage 64 which runs on rails 66 with its wheels 65.
  • the tube 47 thus prepared is inserted on the trough 56 and the carriage 64 into the slotted sleeve 1, which is equipped with adhesive on its inside. If the hose 47 is now slowly lowered by means of the lifting mechanism 63, the hose 47 touches the slotted sleeve 1 first in the region 67 and connects there to the latter.
  • the slotted sleeve 1 After lowering, the slotted sleeve 1 is now slowly rotated, so that little by little all circumferential locations on the outside of the hose 47 come into contact with those on the inside of the slotted sleeve 1 and also stick together. Since it can be difficult in this process to slide the hose 47 over the hollow channel 56 or this process requires considerable force, air can be blown into the hollow channel 56, the hose then slides on an air bearing and remains practically free of expansion. In this way, the hose is also glued to the other areas of the inside of the slotted sleeve 1. Prior treatment of the inside of the tube or the hollow channel 56 with talc can also facilitate the process.
  • the slit sleeve 1 lies in a device which, among other things, consists of two frames 52, bars 53 and three rollers 68.
  • two brackets 69 are fastened to the end bearings of the lowermost roller 68 on the two frames 52 via joints.
  • the two upper rollers 68 are so strongly applied to the slit sleeve 1 that the latter is pressed a little oval.
  • 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 spindle 70 arranged on the left frame in FIG. 11 is actuated via the hand crank 73, the right frame 52 provided spindle 70 is taken in the same way.
  • the three rollers 68 are also connected to one another by chain drives 74.
  • Another chain drive 75 leads to the bottom of the rollers 68 to the geared motor 76.
  • the slotted sleeve 1 is deformed oval, it is easier to arrange the rollers 77 of a tubular roller carriage 78, which have to be introduced into the interior of the slotted sleeve 1 together with a rubber hose 47 already equipped with adhesive, so far apart in the vertical direction that the required circumferential length of the hose 47 can be placed on the rollers 77 without the hose 47 touching the slotted sleeve 1 while it is being inserted.
  • the rollers 77 of the roller carriage 78 are supported at one of their ends on an upper part 62 of a lifting mechanism 63. In addition, these rollers 77 can all be driven at the same speed by means of a gear motor 86 and via chain drives 79.
  • Cylinder rollers 81 and notch rollers 82 are attached to a base plate 80 of the roller carriage 78.
  • the notch rollers 82 run on a prismatic rail 83 and thus keep the roller carriage 78 on a precise track transverse to the direction of travel during the insertion of the hose 47 into the slot sleeve 1.
  • the cylindrical rollers 81 and the notch rollers 82 are individually supported on rigid axles 85.
  • the cylindrical rollers 81 run on a flat rail 84.
  • FIGS. 12 and 13 show a cross-section and the cross-section of a device with which a further method for applying the elastic lining 3 can be carried out.
  • the slit sleeve 1 is first covered with a shrink tube 88 which prevents the liquid latex or prepolymer used for the coating from escaping through the slits in the slit sleeve 1.
  • the slotted sleeve 1 into the device inserted.
  • This carries the slotted sleeve 1 on a strong roller 87 which is mounted on both end faces and is rotated on its right end face via a gear 89 and a motor 90.
  • Spars 91 connect the left and right support structures 92 - only the right side is shown in FIGS. 12, 13.
  • the slotted 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 in relation to the roller 87.
  • Inside the slotted sleeve 1 there is a rigid doctor blade 94, which is fastened to a strong bending beam 96 by supports 95.
  • the bending beam 96 protrudes from the slotted sleeve 1 and ends in an adjusting nut 97.
  • each end of the bending bar 96 is now adjusted so that the doctor blade 94 has a defined distance occupies the inside of the slotted sleeve 1. This distance is chosen so large that it corresponds to the intended layer thickness of the lining 3.
  • a defined amount of latex or prepolymer is then introduced into the interior of the slotted sleeve 1, then the slotted sleeve 1 is rotated.
  • the doctor blade 94 distributes the prepolymer evenly over a few revolutions of the slotted sleeve 1 over the inside of the slotted sleeve 1.
  • baffle plate 100 is provided there, which flows out of the polymer again Job area pushes back.
  • the baffle 100 naturally does not have to consist of metallic materials, but a thermoplastic with good sliding properties will preferably be used.
  • the slotted sleeve 1 is placed in a base plate 101, which is equipped with a strong centering edge 102 for receiving the slotted sleeve 1.
  • the base plate 101 is equipped with a drain 103, a drain line 104 and a shut-off valve 105.
  • the slotted sleeve 1 is also centered at its upper end by a holder 106.
  • the bracket 106 is supported on guide rods 114.
  • the hose 47 to be glued is mounted on a hose frame 107 above the slotted sleeve 1.
  • the hose 47 is already coated on the outside with contact adhesive and likewise the inside of the slotted sleeve 1.
  • the hose 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 inner diameter of the hose 47, which is pressed onto the outer cone jacket of the hose receptacle 109, which is only slightly tightened, by a suitable thin ring 110 . In this way, the hose 47 is held largely free of tension between the hose receptacles 109.
  • the hose receptacles 109 can be set on the central tube 108 to different lengths of the hose 47 and the slotted sleeve 1.
  • the central tube 108 is fastened in a vertical guide carriage 111, which can be moved up or down by cables 112.
  • the ropes 112 run to a winch, which is no longer shown.
  • Long guide sleeves 113 ensure that the vertical guide slide 111 and the hose 47 attached to it are precisely aligned with the slot sleeve 1.
  • the hose 47 is now inserted into the slot sleeve 1.
  • the vertical guide slide 111 is lowered on the cables 112 and guided by the guide rods 114.
  • the hose 47 sticks to the slotted sleeve 1. If hot or hot water is used, contact adhesive that has already become inactive can be reactivated. This can be advantageous if the contact adhesive is left for a long time after it has been applied, in order to be too ready to react to prevent during the insertion of the hose 47 into the slotted sleeve 1. This stretching process gradually grips the entire tube 47 from bottom to top and stretches it slightly but over the entire circumference with completely uniform tension. If the interior of the hose 47 is completely filled with liquid, if necessary a slightly higher filling can be made in the filler neck 118, then the hose 47 also rests under pressure up to the slotted sleeve 1 and bonds with it this.
  • the liquid can be drained by opening valve 105.
  • the slotted sleeve 1 is now removed from the device together with the tubular frame 107. Since the end faces are now accessible, the hose receptacles 109 can also be detached from the hose 47 and optionally pulled out of the hose 47 together with the central tube 108. Protruding or non-glued parts of the hose 47 can be separated or glued. It is of course possible to let air under a slight excess pressure into the hose roller instead of liquid. Any necessary heating can then be effected by blowing the outer surface of the slotted sleeve 1 with warm air.
  • the slotted sleeve 1 is clamped between two cone receptacles 121 and 122 in a manner similar to that of a lathe.
  • the cone seat 121 is rotatably mounted in the headstock 123 and is driven by a motor provided in the headstock 123.
  • the rotary movement (approximately 100 to 500 rpm) is therefore also given to the slotted sleeve 1.
  • the cone receptacle 122 is rotatably mounted in the tailstock 124.
  • a non-rotating, but displaceable in the direction of the axis of the slit sleeve 1 feed pipe 125 with casting head 125a is pushed through the tailstock 124 into the interior of the slit sleeve 1 and introduces the still liquid prepolymer or latex into the latter.
  • the latex is thrown against the inner wall of the slotted sleeve 1 and is distributed there evenly over the inner surface under the action of the centrifugal force.
  • the outlet opening of the feed tube 125 is in a starting position immediately next to the cone receptacle 121.
  • the feed tube 125 is then slowly moved to the right, that is to say in the direction of the tailstock 124.
  • the prepolymer or latex is conveyed from a pressure tank 127 into the feed pipe 125 via a pressure line 126.
  • the pressure tank 127 is therefore under an overpressure of approximately 1 to 3 bar.
  • the right end of the feed pipe 125 is supported in an end head 128.
  • the end head 128 slides on guides 129 and is pulled by a toothed belt 130.
  • the prepolymer must be cured or the latex vulcanized by heating. Therefore, a radiant heater 140 is arranged below the slotted sleeve 1, which heats the slotted sleeve 1 to the vulcanization temperature after the pouring has taken place and keeps it at this temperature for at least a short time.
  • the vulcanization on the casting machine avoids any unevenness in the lining thickness, which could result from the prepolymer or latex flowing during the insertion of the slot clamping sleeves into the vulcanization cabinet.
  • the slit clamping sleeve can be covered with a shrink tube before it is clamped in the casting machine, so that the prepolymer does not escape through the slits.
  • the shrink tube should be heat-resistant and the lining layer should then also be heated or polymerized via hot air introduced into the interior of the slot clamping sleeve.
  • the hot air can via a hollow shaft, for. B. in the headstock 123, initiated.
  • 17 to 19 show details of the device according to FIG. 16.
  • 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 into the inner diameter of the slot sleeve 1 with very little play.
  • an O-ring 132 is pressed between the end head 131 and a flange 133.
  • the O-ring 132 deviates outwards in the direction of the slotted sleeve 1 and lies firmly against the inner wall thereof.
  • the end head 131 fulfills two tasks, namely to create a storage possibility for the end of the slotted clamping sleeve 1 on the cone receptacle 121 and also to prevent the liquid latex or the prepolymer from escaping.
  • the cone receptacle 121 engages in a bore 134 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 slot clamping sleeve 1.
  • the cone receptacle 122 is mounted in the tailstock 124 via ball bearings 136 and is driven by the slotted sleeve 1. So that the slot clamping sleeve 1 does not bulge due to a temperature-related expansion, the left ball bearing 136 is elastic in the form of axial spring rings 141 Tailstock 124 arranged. The other ball bearing 136 can move freely in the axial direction anyway.
  • the feed pipe 125 is mounted in a hollow shaft 143 and guided therein.
  • the hollow shaft 143 is provided with a plastic lining 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 carries a deflection roller 145 for the toothed belt 130.
  • a toothed belt drive wheel 146 is mounted on the tailstock 124 and is driven by a gear motor 147 via a toothed belt drive 148. The end head 128 is clamped onto the toothed belt 130 and is therefore moved by the toothed belt 130.
  • FIG. 20 shows schematically the spraying out of the slot clamping sleeve 1 by a spray head 150.
  • Pre-polymer diluted with solvent emerges from the spray head 150 in the form of a spray mist 151 and covers the inner wall of the slot clamping sleeve 1.
  • the spray head 150 is moved vertically upward in the slot clamping sleeve 1.
  • the spray head 150 has a number of openings 152 through which the dilute prepolymer emerges.
  • the spray head 150 oscillates by a small swivel angle about the central axis 153 of the slot clamping sleeve 1. This swivel angle is slightly larger than the angular pitch at which the openings 152 are arranged. This oscillation serves to even out the coating.
  • FIG. 21 shows a further design of the slot clamping sleeve 1.
  • the slit clamping sleeve 1 consists of an outer sleeve 154 and an inner sleeve 155.
  • the outer sleeve 154 has narrow slots 157 with wide webs 156 in between.
  • the inner sleeve 155 has narrow webs 158 and wide slots 159.
  • the two sleeves 154 and 155 also differ slightly in diameter and are inserted into one another such that the slots 157 are always covered by webs 158, while the slots 159 are covered by webs 156.
  • This double slotted sleeve is also provided with an elastic inner lining, but this is no longer shown.
  • the two slotted sleeves 154, 155 are fixed in their mutual position and of course, as before, sealed against the escape of air.
  • Such a double slot adapter sleeve can also be used when a sieve sleeve is to be clamped, which, for. B. must be treated on a laser engraver. The focused laser beam would immediately perforate the lining layer or a rubber tube lining the slot clamping sleeve if it (this) were exposed unprotected behind a gap 157.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Coating Apparatus (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)
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
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
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.

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

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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)

Cited By (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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0329217A1 (fr) * 1988-02-12 1989-08-23 Schablonentechnik Kufstein Gesellschaft M.B.H. Rouleau tendeur et dispositif avec un tel rouleau

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0329217A1 (fr) * 1988-02-12 1989-08-23 Schablonentechnik Kufstein Gesellschaft M.B.H. Rouleau tendeur et dispositif avec un tel rouleau

Cited By (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

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ES2123313T3 (es) 1999-01-01
EP0802050B1 (fr) 1998-09-09
DE59600536D1 (de) 1998-10-15
ATE170800T1 (de) 1998-09-15

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