EP0574875B1 - Tür für die einseitige Station einer Wellpappen-Herstellungsmaschine - Google Patents
Tür für die einseitige Station einer Wellpappen-Herstellungsmaschine Download PDFInfo
- Publication number
- EP0574875B1 EP0574875B1 EP19930109522 EP93109522A EP0574875B1 EP 0574875 B1 EP0574875 B1 EP 0574875B1 EP 19930109522 EP19930109522 EP 19930109522 EP 93109522 A EP93109522 A EP 93109522A EP 0574875 B1 EP0574875 B1 EP 0574875B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- door
- hook
- hooks
- fact
- panel
- 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
Links
- 238000004026 adhesive bonding Methods 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 2
- 238000009877 rendering Methods 0.000 claims 1
- 230000000284 resting effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000013519 translation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000123 paper Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229920002457 flexible plastic Polymers 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
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 set 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 rear lower 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 "single-sided" station door which, by design, incorporates a safety device upon opening 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 furnished 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 abutments, 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
- 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 simultaneously impart to them 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 lateral 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 perpendicularly 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 curvature towards the front 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 downwards 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 falling immediately by their weight on 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.
Landscapes
- 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)
Claims (6)
- Tür für eine "einseitige" Station einer Maschine zur Herstellung von Wellpappe, insbesondere hintere Tür (15), die auf Schienen (8) angebracht ist und den Innenraum (V) der "einseitigen" Station (10) derart verschliesst, dass dieser Innenraum (V) unter pneumatischen Druck gesetzt werden kann, dadurch gekennzeichnet, dass sie von einer Platte (16) gebildet ist, deren Aussenabmessungen geringfügig kleiner sind als die Innenabmessungen eines Rahmens (18), in welchen diese Platte (16) eingreifen soll, wobei der Aussenumfang des Rands dieser Platte eine Dicke aufweist, die von der Dicke des Rahmens (18) verschieden ist und mit einer Umfangsdichtung (72, 74, 76) versehen ist, die sich gegen den Innenumfang des Rahmens (18) anlegt, dass sie Schienen (8) umfasst, welche mit der Platte (16) verbunden sind, auf deren Innenseite sie mittels Winkelelementen (14) befestigt sind, wobei die Schienen (8) derart ausgebildet sind, dass sie in einer Basis (53) eines Rahmens (11) der Station (10) vorgesehenen Gleitführungen gleiten können, und an einem ihrer Enden mit einem Stopperelement (52) versehen sind, welches dazu bestimmt ist, den Rücklauf der Tür (15) zu begrenzen, wenn sie mit Anschlägen (52) in Kontakt gelangen, wobei die Schienen (8) eine Klebstoffauftragseinheit (20) der Station (10) tragen, welche sich auf ihnen mittels Rollen (2) verlagern kann, und dass sie Sperrmittel mit wenigstens einem Haken (30) umfasst, der orthogonal an der Innenfläche der Platte (16) der Tür (15) befestigt ist, wobei dieser Haken (30) nach Wunsch von einer Vorrichtung in einer vertikalen Ebene angehoben werden kann, um den Haken (30) mit einer mit dem Rahmen (18) verbundenen Sperrachse (32) in Eingriff zu bringen, wobei der vordere Teil der inneren Ausnehmung (33) des Hakens eine in Richtung der Fläche der Platte (16) weisende Krümmung aufweist.
- Tür nach Anspruch 1, dadurch gekennzeichnet, dass ihre Dichtung von Bürsten (72, 74, 76) gebildet ist, welche längs des Aussenumfangs der Tür derart angebracht sind, dass die Haare dieser Bürsten (72, 74, 76) aus dem Rand der Tür hervorstehen.
- Tür nach Anspruch 1, dadurch gekennzeichnet, dass der Haken (30) einen unteren vorderen Abschnitt (31) aufweist, der schräg nach unten orientiert ist, damit er beim Schliessen der Tür (15) von der Sperrachse (32) automatisch angehoben wird, bevor er zurückfällt und mit der Sperrachse (32) in Eingriff tritt, wobei die Krümmung der inneren Ausnehmung (33) des Hakens (30), die der Sperrachse (32) zugeordnet ist, jegliches Anheben des Hakens (30) unmöglich macht, solange im Innenraum (V) der "einseitigen" Station ein pneumatischer Druck vorhanden ist.
- Tür nach Anspruch 1, dadurch gekennzeichnet, dass sie auf jeder Seite wenigstens einen Haken (30) und eine Vorrichtung zum Anheben der Haken (30) umfasst, welche Vorrichtung eine horizontale Achse (40) umfasst, die in Lagern (38) drehbeweglich an der Innenfläche der Platte (16) der Tür (15) angebracht ist, wobei diese horizontale Achse (40) an jedem ihrer Enden mit einem der Haken (30) verbunden ist, was es ermöglicht, diesen gleichzeitig eine nach oben gerichtete Drehbewegung zu verleihen.
- Tür nach Anspruch 4, dadurch gekennzeichnet, dass sie ein vertikales Paar Haken (30) umfasst, welche an jeder ihrer Seiten angeordnet sind, wobei die unteren und oberen Haken (30) eines seitlichen Paars mittels einer vertikalen Stange (34) verbunden sind und die Vorrichtung zum Anheben der Haken an jedem ihrer Enden mit einem im wesentlichen horizontalen Schenkel (36) versehen ist, dessen Ende mit der entsprechenden vertikalen Stange (34) derart verbunden ist, dass die Drehbewegung der horizontalen Achse (40) auf jeden der Haken (30) übertragen wird.
- Tür nach Anspruch 5, dadurch gekennzeichnet, dass die horizontale Achse (40) der Vorrichtung zum Anheben der Haken (30) einen im wesentlichen vertikalen mittleren Schenkel (42) umfasst, der an einem seiner Enden mit der horizontalen Achse (40) verbunden ist, während sein anderes Ende drehbeweglich mit einem horizontalen Steuerhebel (44) verbunden ist, der die Tür (15) durchsetzt, wobei dieser horizontale Steuerhebel (44) nur eine Verlagerungsbewegung in Längsrichtung bewirkt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH1937/92 | 1992-06-19 | ||
CH193792 | 1992-06-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0574875A1 EP0574875A1 (de) | 1993-12-22 |
EP0574875B1 true 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) |
Families Citing this family (4)
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 |
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 |
CN109051394A (zh) * | 2018-08-15 | 2018-12-21 | 四川宏华石油设备有限公司 | 一种柔性水罐锁紧装置 |
CN109051393A (zh) * | 2018-08-15 | 2018-12-21 | 四川宏华石油设备有限公司 | 一种柔性水罐锁紧装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2970718A (en) * | 1959-09-28 | 1961-02-07 | Everest & Jennings | Sterilizer door |
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 |
DE3439227A1 (de) * | 1984-10-26 | 1986-04-30 | Werner H.K. Peters Maschinenfabrik Gmbh, 2000 Hamburg | Auftragswerk fuer eine wellpappenanlage |
US4941695A (en) * | 1989-05-18 | 1990-07-17 | Pullman Leasing Company | Hatch cover assembly |
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 |
GB2247032B (en) * | 1990-07-13 | 1994-02-16 | Simon Container Mach Ltd | 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 |
-
1993
- 1993-06-15 DE DE69301777T patent/DE69301777T2/de not_active Expired - Fee Related
- 1993-06-15 EP EP19930109522 patent/EP0574875B1/de not_active Expired - Lifetime
- 1993-06-18 US US08/078,047 patent/US5360505A/en not_active Expired - Fee Related
- 1993-06-21 JP JP14925993A patent/JPH0818388B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69301777T2 (de) | 1996-08-08 |
EP0574875A1 (de) | 1993-12-22 |
JPH0818388B2 (ja) | 1996-02-28 |
US5360505A (en) | 1994-11-01 |
JPH06340012A (ja) | 1994-12-13 |
DE69301777D1 (de) | 1996-04-18 |
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