EP0641646A2 - Rohrverbindung für wechselbare Riffelwalze in einer einseitigen Station zur Herstellung von Papiererzeugnissen - Google Patents

Rohrverbindung für wechselbare Riffelwalze in einer einseitigen Station zur Herstellung von Papiererzeugnissen Download PDF

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Publication number
EP0641646A2
EP0641646A2 EP94113862A EP94113862A EP0641646A2 EP 0641646 A2 EP0641646 A2 EP 0641646A2 EP 94113862 A EP94113862 A EP 94113862A EP 94113862 A EP94113862 A EP 94113862A EP 0641646 A2 EP0641646 A2 EP 0641646A2
Authority
EP
European Patent Office
Prior art keywords
plate
cassette
connection device
frame
nose
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
EP94113862A
Other languages
English (en)
French (fr)
Other versions
EP0641646B1 (de
EP0641646A3 (de
Inventor
Gerhard Klaassen
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.)
Peters Maschinenfabrik GmbH
Original Assignee
Peters Maschinenfabrik 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 Peters Maschinenfabrik GmbH filed Critical Peters Maschinenfabrik GmbH
Publication of EP0641646A2 publication Critical patent/EP0641646A2/de
Publication of EP0641646A3 publication Critical patent/EP0641646A3/de
Application granted granted Critical
Publication of EP0641646B1 publication Critical patent/EP0641646B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
    • B31F1/20—Corrugating; Corrugating combined with laminating to other layers

Definitions

  • the present invention relates to a pipe fitting bringing a heat-transfer fluid or a pneumatic vacuum in one or more grooved cylinders used in a "single-sided" station, located upstream of a cardboard manufacturing machine, and more particularly in cylinders liable to be changed frequently.
  • a first sheet of paper is corrugated by passing between two fluted cylinders, an upper and a lower.
  • a sizing cylinder located substantially at the height of the lower fluted cylinder, deposits the collar on the ridges of the corrugated paper before application of a second facing paper by a pressure cylinder located under the lower fluted cylinder.
  • a suction device is frequently used at the level of the lower grooved cylinder to hold the first paper in the grooves between the upper grooved roller and the lower pressure roller.
  • Such stations are, for example, described in the documents US 4,381,212 and DE 28 23 674.
  • the internal chamber of the grooved roller is permanently connected to a source of vacuum, and is pierced with a series of radial holes suction opening to the peripheral surface of the cylinder.
  • This cylinder further comprises a series of axial channels inside which steam continuously flows in and out by two coaxial channels formed in the support shaft.
  • cassettes were produced containing the pair of grooved cylinders with their bearings and drive motors, cassettes which can then be removed laterally by rolling them from rails integral with the frame on rails belonging to a carriage.
  • An important machine is also known in which a cassette can be mounted in an upper space of the frame to allow salt to be lowered in another orthogonal direction to a second cassette, thus allowing very rapid exchange of the groove profile.
  • Each of the cassettes can also be removed laterally for exchange.
  • the object of the present invention is a pipe connection device for a cassette of fluted cylinders within a single-sided station, a device which is particularly easy, therefore quick to assemble, while remaining reliable as to the locking and sealing, especially in the case of transport of superheated steam.
  • the device comprises a first plate integral with the cassette in which sockets or plugs are mounted, each of which is connected within the cassette by a conduit to a connector located at the level of the cylinder trunnions, this plate being oriented in the direction of movement of insertion of the cassette in the working position; as well as a second plate integral with the frame and oriented opposite the first plate, second plate in which are mounted sockets or complementary plugs connected to supply or evacuation conduits from the pipe.
  • the internal pipe of the cassette can thus be definitively mounted up to the first plate, and it is the same for the pipe belonging to the frame rigidly mounted up to the second plate, these two plates associating automatically during placing the cassette in the frame.
  • a male plug has a tubular nose with a chamfered external front edge, nose coming to be inserted with a peripheral contact in the internal conduit of a female socket, the length of the nose being at least equal to the half of its external diameter. It is thus possible to produce a fairly tight junction by providing a sufficient thickness of the tube making up the nose, and by machining the external diameter of the nose and the internal diameter of the conduit to a substantially identical dimension. This tightness can be confirmed by an annular seal installed in a groove made transversely to the inlet of the internal conduit of a socket. We then take advantage of the inertia of the mass of the cassette in its insertion movement to overcome the friction forces of the seals.
  • the first plate is carried by a bracket on the outside of the cassette facing a side face of the frame.
  • the connector is then no longer located on the advancing face of the cassette, but on the rear face, that is to say clearly visible to the operators pushing the cassette into its housing.
  • the second plate is held apart from the lateral face of the frame by a foot so that the supply pipes must no longer be integrated into the frame, but are easily accessible just behind the plate for intervention, if necessary.
  • the first plate is completed by a centering tenon with conical tip and of length greater than the nose of a male plug, tenon coming to engage in a centering orifice formed in correspondence in the second plate.
  • the position of a plate is then adjusted automatically at the last moment, shortly before inserting the plugs into a socket. If the position of the pin and the centering hole varies according to the type of fitting, this pin also serves as a detector element.
  • a switch actuated by the centering pin can be installed at the bottom of the centering orifice making it possible to detect the complete insertion or not of the connector before authorizing the passage of the fluid in the pipe.
  • the device using a set of radial and non-axial seals allows axial displacement of the cassette during its inevitable thermal elongation without disturbing action on the sealing of the fitting.
  • FIG. 1 is schematically illustrated, seen from the side, a cassette 10 supporting together a lower grooved cylinder 80 and an upper grooved cylinder 82, this cassette 10 being installed in the frame 20 of a single-sided station of a manufacturing machine of corrugated cardboard.
  • These cylinders are intended to be heated by steam brought to approximately 150 ° C. and brought by a pipe under a pressure of the order of 16 bars to connectors 92 located at the level of the support pins of the cylinders.
  • the steam pipe is articulated around a multiple connection 100 formed by two circular plates brought, face to face one against the other, and which can be seen in Figure 1 the first plate 30 which is integral with the cassette 10.
  • Each plate here carries four connection plugs 50.
  • the general superheated steam inlet pipe 1 is connected by a connector 90 to two fixed steam inlet ducts on the frame, each of these ducts being connected at its end to a socket secured to the plate located behind the visible plate 30.
  • the inlet duct 2 is placed in communication with the steam supply duct 6 to the lower grooved cylinder 80, and the inlet duct 3 is put in communication with the steam supply duct 4 to the upper grooved cylinder 82, these two ducts 4 and 6 now being entirely integral with the cassette 10.
  • the condensed steam from the lower grooved cylinder 80 exits through the return duct 7 then, after passing through the fitting 100, is evacuated through the duct 8 fixed to the frame. Similarly, the return of the condensed steam in the upper grooved cylinder 82 passes through the conduit 5 and then, after passing through the fitting 100, is evacuated through the conduit 9.
  • the pipeline is produced in several sections joined by connectors 90 or tightened in the plugs 50 of the connector 100 by means of nuts 95, this pipeline now being no longer disassembled except for repair reasons.
  • Figure 2 illustrates in more detail a section of the fitting 100 as seen from below.
  • This connection comprises on the one hand, on the frame side 20, a plate 40 fixed through an intermediate plate 24 to a foot 22, itself fixed against the lateral face of the frame 20.
  • the foot 22 can be tubular or profiled in H as long as it is dimensioned so as to be very rigid.
  • This connection 100 further comprises a plate 30 connected to the cassette 10 by a bracket composed of an upright 12 and a cross member 14.
  • fixing lugs 16 making it possible to hold the plate 30 by means of threaded rods 70 locked by a nut 72 and a lock nut 74, the threaded rods 70 passing through oblong holes 71 arranged in the fixing lugs 16 so as to allow vertical movement, on the order of ten millimeters, from the cassette 10, when it is extracted from the machine, thereby releasing the latter from the frame 20.
  • the plate 30 remains integral with the plate 40 while the bracket 12 moves with the cassette 10.
  • the tightness of the connector 100 therefore remains perfect during the vertical displacement of the cassette 10.
  • the upright 12 and the cross-member 14 can be tubular or T-shaped parts or in H provided that their dimensions, in particular their thickness, are established at values sufficient to ensure rigorous rigidity.
  • the height of the upright 12 and of the cross-member 14, as well as the height of the foot 22, are established so that the plates 30 and 40 come into contact face against face when the cassette 10 itself reaches level with the lateral side of the frame 20.
  • the height of the foot 22 is established so that an elbow can be installed without difficulty directly behind the socket 60.
  • the plate 30 supports male plugs 50 screwed by bolts 34.
  • the male plug has at the rear a thread 52 receiving a tube clamping nut 95 (FIG. 1).
  • this male plug 50 has a substantially tubular nose 54 except for the outer edge which is chamfered.
  • the socket 60 held by bolts 44 in the fixed plate 40, has at the front an internal conduit receiving the nose 54 and at the rear a tapping 62 provided for a tightening nut 95 of the tube.
  • the diameter of the internal conduit of the socket 60 corresponds to the external diameter of the nose 54 with a tolerance of one tenth of a millimeter.
  • the internal edge of the inlet of this conduit is also flared outward.
  • an annular seal 64 held in place by a ring 66 is installed in a transverse groove located near the entrance to this internal conduit.
  • the plate 30 connected to the cassette 10 is completed by a centering pin 32 whose end is chamfered in the shape of a truncated cone, this tenon being inserted into a centering orifice 46 formed in correspondence in the fixed plate 40.
  • This tenon is substantially more prominent than the male plugs 50 so as to be in any case the first to enter the 40 plate for ultimate centering.
  • the centering is carried out using two centering pins 32 inserted into two centering holes 46.
  • connection 100 In order to ensure the operation of the machine only when the connection 100 is operational, provision has been made to mount an electrical or proximity switch (not shown) in the foot 22, near the end of one of the orifices. centering rage 46, this contactor being actuated by the corresponding centering pin 32.
  • this multiple connector 100 automatically connects at the last moment of the insertion of the cassette 10 into the frame 20, by rolling along the rails 18, because the male plugs 50 of the plate 30 are oriented in the direction of movement of the cassette 10.
  • the centering lug 32 ensures a final adjustment, and the rigidity of the bracket 12, 14 forces the male plugs 50 into the female sockets 60 up to that the plate 30 comes to touch the face of the plate 40.
  • the kinetic energy stored in the mass of inertia of the cassette 10 ensures, at the end of the journey, sufficient forces to overcome the friction forces of the annular seals at inside the sockets 60.
  • the locking of the position of the cassette 10 in the frame with a tolerance of at least one tenth of a millimeter, jointly ensures the locking of the closure of the fitting 100.
  • the tightness of the pipe at the fitting is of a part provided by the contiguous contact between the nose 54 and the internal conduit of the female sockets 60, and above all confirmed by the annular seals.
  • the connector according to the invention is illustrated in the figures with only four connections in the context of a steam pipe, it is of course possible to provide one or more additional fittings for an air suction pipe.
  • the plates can be circular or regular polygons.
  • connection plate 30 is located in front on the other lateral face of the cassette, the plate 40 secured to the frame then being carried by a bracket opposite. Many improvements can be made to this device in the context of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Quick-Acting Or Multi-Walled Pipe Joints (AREA)
EP94113862A 1993-09-07 1994-09-03 Rohrverbindung für wechselbare Riffelwalze in einer einseitigen Station zur Herstellung von Papiererzeugnissen Expired - Lifetime EP0641646B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH265393 1993-09-07
CH2653/93 1993-09-07

Publications (3)

Publication Number Publication Date
EP0641646A2 true EP0641646A2 (de) 1995-03-08
EP0641646A3 EP0641646A3 (de) 1995-11-29
EP0641646B1 EP0641646B1 (de) 1997-07-30

Family

ID=4238585

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94113862A Expired - Lifetime EP0641646B1 (de) 1993-09-07 1994-09-03 Rohrverbindung für wechselbare Riffelwalze in einer einseitigen Station zur Herstellung von Papiererzeugnissen

Country Status (3)

Country Link
US (1) US5553894A (de)
EP (1) EP0641646B1 (de)
DE (1) DE69404578T2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080206016A1 (en) * 2005-07-21 2008-08-28 Thompson Steven L Encapsulated fastener and method and tooling for manufacturing same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125361A (en) * 1964-03-17 Tube harness
FR1551816A (de) * 1967-01-25 1968-12-27
US4320694A (en) * 1979-10-04 1982-03-23 Caterpillar Tractor Co. Hydraulic manifold assembly
DE4022769A1 (de) * 1989-07-22 1991-01-31 Voss Armaturen Rohrleitungsmehrfachkupplung

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1134411A (en) * 1965-01-22 1968-11-20 Foster Wheeler Ltd The testing of tube and shell heat exchangers for tube failure
US4177102A (en) * 1976-04-19 1979-12-04 Rengo Co., Ltd. Single facer for manufacturing single-faced corrugated board
FR2350496A1 (fr) * 1976-05-03 1977-12-02 Matra Engins Connecteur automatique et application dudit connecteur aux modules de raccordement sous-marins
JPS5453096A (en) * 1977-10-03 1979-04-26 Isowa Industry Co Core holder for apparatus for making oneeside corrugated cardboard
DE2823674C2 (de) * 1978-05-31 1983-05-05 BHS-Bayerische Berg-, Hütten- und Salzwerke AG, 8000 München Vorrichtung zum Halten einer gewellten Bahn einer wenigstens einseitig mit einer Decklage zu versehenden Wellpappe an einer Riffelwalze
US4381212A (en) * 1980-02-20 1983-04-26 Molins Machine Company, Inc. Fingerless single facer
US4426104A (en) * 1981-10-21 1984-01-17 Nl Industries, Inc. Underwater connector apparatus
DE3336658A1 (de) * 1983-10-08 1985-04-25 Ingenioerfirma Peter Simonsen A/S, 6400 Soenderborg Einseitige wellpappenmaschine
FR2622145B1 (fr) * 1987-10-23 1994-05-27 Lacaux Freres Papeteries Carto Cylindre cannele pour une machine de fabrication de carton ondule
US4787954A (en) * 1988-01-28 1988-11-29 Westvaco Corporation Vacuum tube holder for corrugating machines
JP2796554B2 (ja) * 1989-10-18 1998-09-10 株式会社コニカシステム機器 シート穿孔装置
EP0574873B1 (de) * 1992-06-19 1996-03-13 PETERS MASCHINENFABRIK GmbH Einseitige Wellpappen-Herstellungsmaschine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125361A (en) * 1964-03-17 Tube harness
FR1551816A (de) * 1967-01-25 1968-12-27
US4320694A (en) * 1979-10-04 1982-03-23 Caterpillar Tractor Co. Hydraulic manifold assembly
DE4022769A1 (de) * 1989-07-22 1991-01-31 Voss Armaturen Rohrleitungsmehrfachkupplung

Also Published As

Publication number Publication date
DE69404578T2 (de) 1998-01-08
EP0641646B1 (de) 1997-07-30
EP0641646A3 (de) 1995-11-29
US5553894A (en) 1996-09-10
DE69404578D1 (de) 1997-09-04

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