EP0574875A1 - Tür für die einseitige Station einer Wellpappen-Herstellungsmaschine - Google Patents

Tür für die einseitige Station einer Wellpappen-Herstellungsmaschine Download PDF

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Publication number
EP0574875A1
EP0574875A1 EP19930109522 EP93109522A EP0574875A1 EP 0574875 A1 EP0574875 A1 EP 0574875A1 EP 19930109522 EP19930109522 EP 19930109522 EP 93109522 A EP93109522 A EP 93109522A EP 0574875 A1 EP0574875 A1 EP 0574875A1
Authority
EP
European Patent Office
Prior art keywords
door
hook
panel
frame
station
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
EP19930109522
Other languages
English (en)
French (fr)
Other versions
EP0574875B1 (de
Inventor
Peter Buetikofer
Martin Hoffmann
Nicolaus Goerrissen
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 EP0574875A1 publication Critical patent/EP0574875A1/de
Application granted granted Critical
Publication of EP0574875B1 publication Critical patent/EP0574875B1/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
    • B31F1/24—Making webs in which the channel of each corrugation is transverse to the web feed
    • B31F1/26—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions
    • B31F1/28—Making webs in which the channel of each corrugation is transverse to the web feed by interengaging toothed cylinders cylinder constructions combined with uniting the corrugated webs to flat webs ; Making double-faced corrugated cardboard
    • B31F1/2845—Details, e.g. provisions for drying, moistening, pressing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D90/00—Component parts, details or accessories for large containers
    • B65D90/22—Safety features
    • B65D90/32—Arrangements for preventing, or minimising the effect of, excessive or insufficient pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/0801—Multiple
    • Y10T292/0825—Hooked end
    • Y10T292/0826—Operating means
    • Y10T292/0828—Link and lever

Definitions

  • the present invention relates to a door for the "single-sided station" of a machine for manufacturing corrugated cardboard, in particular a rear door mounted on rails and closing the internal volume of the "single-sided” station so that this volume can be put under pneumatic pressure.
  • a first paper is corrugated by passing between two fluted rolls, then receives from a gluing unit, before application of a second paper facing from a third lower pressing cylinder, a thread of adhesive deposited on the crests of the corrugations thus formed.
  • the frame of such a station comprises a base flanked by two side walls, the front edges of which support the two grooved cylinders and the lower pressure cylinder which constitute, as it were, a front wall. Between the two side walls is located the gluing unit whose front gluing roller is brought with a very precise gap close to the lower rear part of the second lower grooved roller.
  • This gluing unit is usually mounted on rails in order to be able to take it out from the rear of the station for cleaning, maintenance and repair, and also to allow access to the cylinders, from the rear, for identical operations.
  • a recent technique for correctly maintaining the corrugated paper in the grooves in the rear part of the second cylinder, where gluing takes place consists in closing the upper part of the station with a plate, the rear face with a door, and in pressurizing the internal volume thus defined at a pneumatic pressure of in the range of 50 to 60 millibars. Obviously, this door must always be able to be reopened in order to allow the gluing unit to exit when necessary, which poses a double locking and sealing problem for this door.
  • the object of the present invention is a door for a "single-sided" station which, by design, incorporates an opening safety device in the event of residual pressure in the internal volume.
  • the locking system must be easier to handle, both when opening and closing.
  • the sealing device which should in fact only support a slight pneumatic overpressure, to be of a more reliable design and in particular insensitive to the final position of the door in the frame.
  • a door consisting of a panel of external dimensions slightly smaller than the internal dimensions of a frame in which this panel must engage, the periphery of the edge of this panel having a thickness different from the thickness. of the frame and being lined with a peripheral seal coming to bear against the internal periphery of the frame, the door comprising rails, integral with the panel, on the internal face of which they are fixed by means of brackets, the rails being arranged so as to be able to slide in slides arranged in a base of a station frame and provided, at one of their ends with a stop piece intended to limit the rear stroke of the door when they arrive in contact with stops, said rails supporting a gluing unit, from the station, being able to move thereon by means of rollers, the door also comprising means of v interlocking comprising at least one fixed hook perpendicularly against the internal face of the door panel, this hook being able to be lifted, when desired, in a vertical plane by a device to engage the hook on a locking pin secured
  • the door can somewhat couple, over a distance of three to four centimeters, inside the frame like a piston in a cylinder without losing its tightness.
  • the curvature, directed in the direction of the face of the panel, of the front part of the internal notch of the hook means that, when the internal volume is pressurized, the door is brought to start slightly behind making it impossible any lifting of the hook until this overpressure has not completely disappeared. The release of the hooks is therefore only possible after reinserting the front of this door.
  • the seal may consist of a more or less hollow bead of elastomer or flexible plastic, or of a series of longitudinal rollers pushed back by internal return means or any other type of seal which will crush enough to allow inserting the panel into the frame without difficulty.
  • a particularly advantageous solution consists in mounting brushes along the periphery of the door, so that their bristles emerge from the edge.
  • the lower front part of the hook can be oriented obliquely downwards to be lifted automatically by the axis of integral locking of the frame, this before the fall of the hook and its engagement on the locking pin, when the door is closed.
  • the door comprises a hook on each side for a better distribution of the holding forces, the hook lifting device then comprising a horizontal axis mounted, movably in rotation, against the internal face of the door by bearings, this horizontal axis being connected by each of its ends to one of the hooks thus making it possible to impart to them simultaneously a movement in rotation upwards or downwards.
  • the door may include a vertical pair of hooks on each side, the lower and upper hooks of a side pair being connected by a vertical bar and the horizontal axis of the hook lifter being supplemented at each end by a substantially horizontal arm whose end is connected to the corresponding vertical bar so that the partial rotational movement of the horizontal axis is transmitted to each of the hooks.
  • a better device comprises a substantially vertical central arm secured to the horizontal axis of this hook lifting device, the other end of this central arm being connected, movable in rotation, to a horizontal control lever passing through the door.
  • This control lever performing only a longitudinal translation movement, it can therefore pass through this door through a simple orifice, which greatly limits pressure losses.
  • FIG. 1 is illustrated, in section, a "single-sided" station 10 of which we recognize in the front part, that is to say in the left part of FIG. 1, the two upper fluted cylinders 1 and lower 3 with, at the bottom, the pressing cylinder 5.
  • the frame 11 of this station comprises a horizontal base flanked by two side walls 4 closed at the top by a cover.
  • the rear frame 18 is delimited at the top by a cross-member 6, on each side by the rear edges of the side walls 4, and at the bottom by a horizontal plate 6 ', these various elements delimiting an internal volume V of the single-sided station 10.
  • a gluing unit 20, of which the front gluing roller 7, almost in contact with the rear part of the lower grooved cylinder 5, is housed in this internal volume V.
  • the gluing unit 20 rests, via rollers 2, on rails 8.
  • the rear closing door 15 essentially consists of a panel 16 supported by a spacer 17 at the ends of which are mounted rollers 19.
  • the panel 16 is equipped with brackets 14 fixed on the rails 8 which are arranged so as to be able to slide in slides arranged in the base of the frame 11 of the station 10
  • the external dimensions of the panel 16 of the door 15 are very slightly smaller, of the order of 5 to 10 millimeters, than the internal dimensions of the rear frame 18 of the frame 11 described above.
  • the seal between the pneumatic overpressure prevailing inside the internal volume V of the single-sided station 10 and the outside atmospheric air is produced here by upper horizontal brushes 72, lower 74 and by side brushes 76 reported by screwing or riveting along the outer periphery of the frame 16 of the door 15, the bristles of these upper 72, lower 74 and lateral brushes being oriented towards the outside.
  • these brushes are made of nylon wire having sufficient rigidity even after long periods of use.
  • the door locking device 15 comprises four hooks 30, distributed in pairs in the height of the panel 16, each of the hooks 30 being mounted substantially in the vicinity of each of the four corners of the panel 16 of the door 15.
  • each hook 30 is mounted on a support 39 while being oriented perpendicular to the door 15 and this is movable in rotation, in a vertical plane, around a pivot 50.
  • the hooks 30 of a lateral pair, as shown in FIG. 2 are interconnected by a pull tab vertical 34 each end of which is connected to its respective hook 30 by a pivot.
  • the two pairs of hooks 30, connected by the vertical pulls 34 are also coupled by a horizontal axis 40 mounted, on the internal face of the panel 16 of the door 15, in bearings 38, constituted in this case of simple perforated and welded plates against the panel 16.
  • a horizontal axis 40 mounted, on the internal face of the panel 16 of the door 15, in bearings 38, constituted in this case of simple perforated and welded plates against the panel 16.
  • Each end of this axis 40 is completed by an arm 36, substantially horizontal, the ends of these arms 36 being connected by a pivot to the corresponding vertical bar 34.
  • This horizontal axis 40 is also completed with a central arm 42, preferably oriented downwards, the end of which is connected, also by a pivot, to a control lever 44 horizontally passing through the panel 16 of the door 15 through an orifice whose dimensions are just sufficient to allow translation of this lever without loss of pneumatic pressure.
  • each hook 30 has an internal notch 33 provided to engage on a locking pin 32 located, in correspondence, in the side wall 4 of the frame 11 of the station 10. More in particular, the front part of this internal notch 33 has a strong forward curvature so that, once these hooks 30 engage on the axes 32 and the door 15 being pushed back by the overpressure prevailing in the station 10, these hooks 30 completely surround the locking pin 32 and can no longer be lifted directly, thus preventing any untimely movement towards the rear of the door 15.
  • each hook 30 is obliquely oriented downward with the upper part higher than the locking pin 32.
  • the closing of this door 15 is particularly easy because, once the gluing unit 20 is rolled inside the station 10, just push this door 15, the rails 8 sliding inside their slides located in the frame 11, until the hooks 30 meet the locking pins 32. Thanks to the oblique front portion of these hooks 30 ' , these will be lifted automatically until the internal notches 33 arrive at these axes, the hooks 30 immediately falling by their weight onto the locking axes 32.
  • the relatively simple design of the locking and sealing system of this door 15 ensures better safety in the use of the machine, in the event of residual overpressure in station 10, by preventing the untimely opening of the latter, and by authorizing an easy and safe closing of the station 10 by a simple push on the door 10.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
  • Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
EP19930109522 1992-06-19 1993-06-15 Tür für die einseitige Station einer Wellpappen-Herstellungsmaschine Expired - Lifetime EP0574875B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH193792 1992-06-19
CH1937/92 1992-06-19

Publications (2)

Publication Number Publication Date
EP0574875A1 true EP0574875A1 (de) 1993-12-22
EP0574875B1 EP0574875B1 (de) 1996-03-13

Family

ID=4222094

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19930109522 Expired - Lifetime EP0574875B1 (de) 1992-06-19 1993-06-15 Tür für die einseitige Station einer Wellpappen-Herstellungsmaschine

Country Status (4)

Country Link
US (1) US5360505A (de)
EP (1) EP0574875B1 (de)
JP (1) JPH0818388B2 (de)
DE (1) DE69301777T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106003844A (zh) * 2016-05-26 2016-10-12 佛山市富利包装机械有限公司 一种瓦楞机一体式墙板及其换辊机构

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9580946B2 (en) * 2015-07-22 2017-02-28 Provisur Technologies, Inc. Screw conveyor having linked latch closure
CN109051394B (zh) * 2018-08-15 2024-09-06 四川宏华石油设备有限公司 一种柔性水罐锁紧装置
CN109051393B (zh) * 2018-08-15 2024-09-06 四川宏华石油设备有限公司 一种柔性水罐锁紧装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3844597A (en) * 1973-08-29 1974-10-29 D Elrod Safety latch
GB1459411A (en) * 1973-02-28 1976-12-22 Hillier C N Pressure vessels
EP0179395A1 (de) * 1984-10-26 1986-04-30 PETERS MASCHINENFABRIK GmbH Auftragswerk für eine Wellpappenanlage
US4941695A (en) * 1989-05-18 1990-07-17 Pullman Leasing Company Hatch cover assembly
GB2247032A (en) * 1990-07-13 1992-02-19 Simon Container Mach Ltd Apparatus for manufacturing single-faced corrugated board

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970718A (en) * 1959-09-28 1961-02-07 Everest & Jennings Sterilizer door
US5160400A (en) * 1990-05-24 1992-11-03 United Container Machinery Group, Inc. Corrugating apparatus having a liquid filled seal roll
US5110396A (en) * 1990-06-14 1992-05-05 The Langston Corporation Floating air seal for an apparatus for manufacturing single faced corrugated board
US5145549A (en) * 1991-08-19 1992-09-08 Bhs-Bayerische Berg-, Hutten-Und Salzwerke Ag Apparatus for producing one-sided corrugated paperboard

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1459411A (en) * 1973-02-28 1976-12-22 Hillier C N Pressure vessels
US3844597A (en) * 1973-08-29 1974-10-29 D Elrod Safety latch
EP0179395A1 (de) * 1984-10-26 1986-04-30 PETERS MASCHINENFABRIK GmbH Auftragswerk für eine Wellpappenanlage
US4941695A (en) * 1989-05-18 1990-07-17 Pullman Leasing Company Hatch cover assembly
GB2247032A (en) * 1990-07-13 1992-02-19 Simon Container Mach Ltd Apparatus for manufacturing single-faced corrugated board

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106003844A (zh) * 2016-05-26 2016-10-12 佛山市富利包装机械有限公司 一种瓦楞机一体式墙板及其换辊机构
CN106003844B (zh) * 2016-05-26 2018-06-26 佛山市富利包装机械有限公司 一种瓦楞机一体式墙板及其换辊机构

Also Published As

Publication number Publication date
JPH0818388B2 (ja) 1996-02-28
DE69301777D1 (de) 1996-04-18
US5360505A (en) 1994-11-01
DE69301777T2 (de) 1996-08-08
EP0574875B1 (de) 1996-03-13
JPH06340012A (ja) 1994-12-13

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