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EP0128282B2 - Belt press with a pressure chamber - Google Patents
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EP0128282B2 - Belt press with a pressure chamber - Google Patents

Belt press with a pressure chamber Download PDF

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Publication number
EP0128282B2
EP0128282B2 EP84103509A EP84103509A EP0128282B2 EP 0128282 B2 EP0128282 B2 EP 0128282B2 EP 84103509 A EP84103509 A EP 84103509A EP 84103509 A EP84103509 A EP 84103509A EP 0128282 B2 EP0128282 B2 EP 0128282B2
Authority
EP
European Patent Office
Prior art keywords
groove
holder
pressure
pressure plate
pressing belt
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP84103509A
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German (de)
French (fr)
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EP0128282B1 (en
EP0128282A1 (en
Inventor
Werner Dr. Pankoke
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.)
Theodor Hymmen KG
Original Assignee
Theodor Hymmen KG
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.)
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Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6196299&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0128282(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Theodor Hymmen KG filed Critical Theodor Hymmen KG
Priority to AT84103509T priority Critical patent/ATE27120T1/en
Publication of EP0128282A1 publication Critical patent/EP0128282A1/en
Application granted granted Critical
Publication of EP0128282B1 publication Critical patent/EP0128282B1/en
Publication of EP0128282B2 publication Critical patent/EP0128282B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B5/00—Presses characterised by the use of pressing means other than those mentioned in the preceding groups
    • B30B5/04—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band
    • B30B5/06—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band
    • B30B5/062—Presses characterised by the use of pressing means other than those mentioned in the preceding groups wherein the pressing means is in the form of an endless band co-operating with another endless band urged by directly-acting fluid 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S277/00—Seal for a joint or juncture
    • Y10S277/906—Seal for article of indefinite length, e.g. strip, sheet

Definitions

  • the invention relates to a device for applying surface pressure to progressive workpieces, such as wood-based panels or the like, in which at least one circumferential press belt can be pressed against the workpiece by a pressure medium which is sealed in an adjoining the press belt and sealed by means of a circumferential sealing strip , Rectangular pressure chamber on the side of the pressure belt facing the pressure plate can be introduced, the sealing strip being firmly connected to a correspondingly rectangular mounting frame which is guided in a groove in the pressure plate, movably mounted inwards and outwards in the groove and in the direction of the pressing band which slides along the sealing strip is under pressure.
  • a device of this type is known (DE-C-2 722 197), in which the pressure chamber is delimited by a rectangular sealing strip which is connected to a correspondingly rectangular mounting frame. Only the longitudinal parts of this mounting frame are equipped with support brackets which extend to both sides or to the groove base and which are supported on transverse slide bearings which are arranged in the pressure plate and do not impede the groove inward and the outward movement.
  • the support brackets and the associated cross slide bearings are not suitable for ensuring that the mounting frame does not tilt in the groove of the pressure plate and that the mounting frame does not fall out of the To prevent the groove of the pressure plate when the device is idling or when changing the press belt
  • manufacturing inaccuracies of the groove and the socket frame have a disadvantageous effect for guiding the socket frame in the groove.
  • the socket frame may jam in some places in the groove.
  • the invention has for its object to design a device of the type mentioned so that the frame is secured against falling out of the groove of the pressure plate and the securing elements simultaneously form guide members for the frame.
  • the supporting members holding and guiding the frame are spaced apart on the circumference of the pressure plate and accessible from the outer circumference of the pressure plate.
  • the line-shaped end of the screw, the pin or the flat fitting pieces in the guide groove transmit horizontal thrust forces acting on the seal to the pressure plate.
  • the friction on the side surfaces of the socket in the groove is kept low, for which purpose a lubrication of these surfaces can also be provided, which can be polished in addition to further reducing the friction. This in turn can seal the Side surfaces of the socket relative to the walls of the groove in the pressure plate and relative to a pressure space arranged therein can be improved
  • a pressure medium hose is arranged in the groove running parallel to the socket, this hose can not only press the socket with the sealing strip against the pressure band elastically with its pressure medium, but also serve as a coolant for the socket and the seal.
  • the device according to the invention consists of a lower frame 10 and an upper frame 11, in each of which endless press belts 12 are installed.
  • the press belts 12 are tensioned on deflection rollers 13 and can be driven by them. They are arranged with respect to one another with a gap which corresponds to the width of a workpiece 14 to be machined. While the press belts 12 carry out a horizontal movement with their surfaces touching the workpiece 14, the workpiece 14 is drawn into the device, specifically into the gap that exists between the surfaces, and is pressurized there by the surfaces of the press belts 12. When the workpiece 14 passes through the device, it is processed so that it leaves the gap between the press belts 12 at the outlet from the device as a finished workpiece (FIG. 9).
  • foils 15, which run off supply rolls 16, are pressed onto the top and bottom of the workpiece 14.
  • the upper frame 11 can be pressed against the lower frame 10 as a whole or, after a rough adjustment of the distance between the upper frame 11 and the lower frame 10, the required pressure can be exerted by means of an air pressure which prevails in pressure chambers 17 which are each arranged on the back of the press belt 12 with respect to the workpiece 14, that is to say on the surface of the press belt 12 which is not in contact with the workpiece 14.
  • guide slides 18 are provided for the rough adjustment, which are fixedly arranged on the lower frame 10 and on which the upper frame 11 can be displaced in the vertical direction.
  • Hydraulic cylinders 19 provide for the displacement.
  • the pressure chambers 17 are delimited by pressure plates 20 which are guided relative to the frames 10 and 11 and are moved by hydraulic cylinders 21.
  • the pressure plate 20 has on its surface facing the press belt 12 a peripheral groove 22 for fastening a sealing strip 23 on the edge.
  • the sealing strip 23 lies against the circumferential press belt 12, which slides along the sealing strip 23 during operation.
  • the pressure chamber 17 is thus formed by the surface of the pressure plate 20, by the surface of the press belt 12 facing away from the workpiece 14 and by the circumferential sealing strip 23.
  • a pressure medium such as compressed air can be introduced into the pressure chamber 17 through the pressure plate 20 via openings 24 (FIG. 1).
  • the entire pressure plate 20 can be rotated, for example, about a central axis 25 running perpendicular to the press belt 12, so that its rectangular configuration with different side lengths allows the pressure chamber width to be adjusted to different workpiece widths.
  • the sealing strip 23 is supported without play in a groove 26 of the socket 27, which is held vertically movable in the groove 22 of the pressure plate 20 and is rectangular in cross section.
  • the socket 27 and sealing strip 23 thus form a unit.
  • the mount 27, which can be moved vertically in the groove 22 of the pressure plate 20, is held elastically by a pressure medium hose 28 which is connected to a pressure medium line 29 which is attached to the side of the pressure plate 20.
  • These guides 30 are formed, for example, by commercially available screws 31, the threaded ends of which are each formed into a guide pin 32 which is kept smaller in diameter.
  • These guide pins 32 engage in blind bores 33 arranged laterally in the holder 27, each of which is designed as a (vertical) groove running transversely to the longitudinal direction of the holder.
  • the width of each groove 33 corresponds to the diameter of the guide pins 32, so that through their lateral line contact adverse horizontal shear forces of the socket 27 are distributed in the groove to the number of screws 31.
  • the socket 27 is prevented from sliding out of the groove 22 in the rest position.
  • Lubricating nipples 35 are screwed into the screws 31 (FIG. 5) in order to refill new lubricants such as grease or the like at intervals.
  • the screws 31 each have a lubrication bore 36 in their longitudinal direction, which ends in the groove 33 and introduces the lubricant.
  • the groove 22 is in each case delimited by a circumferential profile strip 37 which is fastened to the pressure plate 20 by means of screws 38 on the edge.
  • This profile strip 37 is angular; whose short leg 37a bears against the pressure plate 20, through which the screws 38 are also guided and screwed into the pressure plate 20.
  • An annular seal 39 is arranged on the contact surface between the pressure plate 20 and the leg 37a, which seals the groove 22 formed upwards.
  • a bore 40 for supplying a pressure medium is arranged parallel to the screws 38, which opens into the groove 22.
  • This pressure medium acts on a sealing profile 41 which is arranged in the groove 22 between the socket 27 and the groove base. The holder 27 is pressed elastically onto the press belt 12 by the pressure medium.
  • a plurality of fitting pieces 42 are fastened in the vertical leg 37b of the profiled strip 37 at intervals from the lower edge by means of screws 43, which run parallel to the socket 27 from grooves upwards.
  • the fitting pieces 42 have an elongated hole 44, through which the screw 43 is inserted and holds the fitting piece 42 in an adjustable manner. The fitting piece 42 can thus be moved horizontally in the direction of the holder 27 (FIGS. 6 and 7).
  • the fitting piece 42 is, for example, semicircular on the upper side, as a result of which manufacturing can be simplified considerably (see FIG. 7).
  • FIG. 8 shows a further possibility of guiding the socket 27.
  • the fitting piece 46 is supported from below in a receiving recess 47 and is held adjustable by means of screws 48 at right angles to the socket 27.
  • the fitting pieces 46 can be designed here as short strip sections into which two screws 48 engage.
  • the socket 27 is guided over a large area on the fitting pieces 46.
  • lubricating nipples 35 can also be fastened into the strip-shaped fitting pieces 46, via which a lubricant can be supplied in order to reduce the friction.
  • Such fitting pieces 42, 46 shown in FIGS. 6 to 8 have the advantage that horizontal thrust forces, which are derived from the sealing strip 23 on the socket 27, on the side surfaces (ie over a wide area) of the fitting pieces 42, 46 or on the adjacent contact surfaces the profile bar 37 transferred and thus be taken up by the pressure plate 20.
  • the illustrated guide pins 32 or fitting pieces 42, 46 can be adjusted by means of the screws 31, 43, 48 or the like inserted laterally or on the press belt side, so that their pressure on the holder 27 is variable.

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Press Drives And Press Lines (AREA)
  • Veneer Processing And Manufacture Of Plywood (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
  • Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
  • Peptides Or Proteins (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

In a device for applying surface pressure to advancing workpieces like sheets of wood-based material and similar products with at least one revolving compression belt that a pressure plate acts on the inside of, several pressure chambers are distributed along the belt. Each chamber is constituted out of a holder that has a sealing strip. The holder and sealing strip are secured in such a way that they can be adjusted in a groove in the pressure plate by means of lateral guides constituted out of screws, adapters, or similar structures that are secured in such a way that they can be adjusted to the holder in the plane of the belt in such a way that deleterious horizontal displacement forces exerted by the belt on the sealing strip can be diverted into the pressure plate.

Description

Die Erfindung bezieht sich auf eine Vorrichtung zum Aufbringen einer Flächenpressung auf fortschreitende Werkstücke, wie Holzwerkstoffplatten od.dgl., bei der mindestens ein umlaufendes Preßband an das Werkstück von einem Druckmittel anpreßbar ist, das in eine an dem Preßband angren­zende und mittels einer umlaufenden Dichtungsleiste abgedichtete, recht­eckförmige Druckkammer an der dem Preßband zugekehrten Seite einer Druck­platte einleitbar ist, wobei die Dichtungsleiste mit einem entsprechend rechteckförmigen Fassungsrahmen fest verbunden ist, der in einer Nut der Druckplatte geführt, nuteinwärts und nutauswärts beweglich gelagert und in Richtung auf das an der Dichtungsleiste entlanggleitend angeordnete Preßband druckbelastet ist.The invention relates to a device for applying surface pressure to progressive workpieces, such as wood-based panels or the like, in which at least one circumferential press belt can be pressed against the workpiece by a pressure medium which is sealed in an adjoining the press belt and sealed by means of a circumferential sealing strip , Rectangular pressure chamber on the side of the pressure belt facing the pressure plate can be introduced, the sealing strip being firmly connected to a correspondingly rectangular mounting frame which is guided in a groove in the pressure plate, movably mounted inwards and outwards in the groove and in the direction of the pressing band which slides along the sealing strip is under pressure.

Es ist eine Vorrichtung dieser Art bekannt (DE-C-2 722 197), bei der die Druckkammer von einer rechteckförmig umlaufenden Dichtungsleiste begrenzt ist, die mit einem entsprechend rechteckförmigen Fassungsrahmen verbun­den ist. Ausschließlich die Längsteile dieses Fassungsrahmens sind mit zu beiden Seiten oder zum Nutgrund sich erstreckenden Stützwinkeln aus­gerüstet, die sich an in der Druckplatte angeordnete, die Nuteinwärts- und die Nutzauswärtsbewegung nicht behindernde Quergleitlager abstützen.A device of this type is known (DE-C-2 722 197), in which the pressure chamber is delimited by a rectangular sealing strip which is connected to a correspondingly rectangular mounting frame. Only the longitudinal parts of this mounting frame are equipped with support brackets which extend to both sides or to the groove base and which are supported on transverse slide bearings which are arranged in the pressure plate and do not impede the groove inward and the outward movement.

Die in Bewegungsrichtung der Preßbänder wirkenden Schubkräfte, die auf­grund der Reibung zwischen den Preßbändern und der Dichtungsleiste ent­stehen, werden bei der bekannten Vorrichtung ausschließlich über die Stützwinkel und die Quergleitlager von dem Fassungsrahmen auf die Druck­platte übertragen, so daß Flächenpressungen zwischen den Querteilen des Fassungsrahmens und den zugeordneten Nutwandungen vermieden werden.The shear forces acting in the direction of movement of the press belts, which arise due to the friction between the press belts and the sealing strip, are transferred from the mounting frame to the pressure plate in the known device exclusively via the support bracket and the transverse sliding bearing, so that surface pressures between the cross parts of the mounting frame and the associated groove walls can be avoided.

Die Stützwinkel und die zugeordneten Quergleitlager sind nicht geeignet, ein verkantungsfreies Führen des Fassungsrahmens in der Nut der Druck­platte zu gewährleisten und ein Herausfallen des Fassungsrahmens aus der Nut der Druckplatte im Leerlaufbetrieb der Vorrichtung oder beim aus­wechseln des Preßbandes zu verhindernThe support brackets and the associated cross slide bearings are not suitable for ensuring that the mounting frame does not tilt in the groove of the pressure plate and that the mounting frame does not fall out of the To prevent the groove of the pressure plate when the device is idling or when changing the press belt

Die Führung des aus Metall, vorzugsweise aus Stahl, gefertigten Fassungs­rahmens kann in der Nut der Druckplatte nicht korrigiert werden. Insbe­sondere bei großen Abmessungen der Druckkammer und damit des Fassungs­rahmens wirken sich Fertigungsungenauigkeiten der Nut und des Fassungs­rahmens für die Führung des Fassungsrahmens in der Nut nachteilig aus. Es kann an einigen Stellen zu einem Klemmen des Fassungsrahmens in der Nut kommen.The guidance of the frame made of metal, preferably steel, cannot be corrected in the groove of the pressure plate. In particular with large dimensions of the pressure chamber and thus of the socket frame, manufacturing inaccuracies of the groove and the socket frame have a disadvantageous effect for guiding the socket frame in the groove. The socket frame may jam in some places in the groove.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art so zu gestalten, daß der Fassungsrahmen gegen ein Heraus­fallen aus der Nut der Druckplatte gesichert wird und die Sicherungsele­mente gleichzeitig Führungsorgane für den Fassungsrahmen bilden.The invention has for its object to design a device of the type mentioned so that the frame is secured against falling out of the groove of the pressure plate and the securing elements simultaneously form guide members for the frame.

Diese Aufgabe wird durch die Merkmale des kennzeichnenden Teils des Pa­tentanspruches 1 gelöst.This object is achieved by the features of the characterizing part of patent claim 1.

Die den Fassungsrahmen haltenden und führenden Stützorgane sind auf dem Umfang der Druckplatte in Abständen voneinander angeordnet und vom Außenumfang der Druckplatte her zugänglich.The supporting members holding and guiding the frame are spaced apart on the circumference of the pressure plate and accessible from the outer circumference of the pressure plate.

Somit kann die Montage dieser Stützorgane und auch ihre Betätigung zur Verbesserung der Führungsverhältnisse zwischen dem Fassungsrahmen und den Nutwandungen in einfacher Weise vorgenommen werden.Thus, the assembly of these support members and also their operation to improve the management relationships between the socket frame and the groove walls can be carried out in a simple manner.

Das linienförmig in der Führungsnut anliegende Ende der Schraube, des Stiftes bzw. die flächenförmig anliegenden Paßstücke übertragen hori­zontale, auf die Dichtung einwirkende Schubkräfte auf die Druckplatte. Die Reibung an den Seitenflächen der Fassung in der Nut wird niedrig gehalten, wozu in bevorzugter Weise noch eine Schmierung dieser Flächen vorgesehen sein kann, die zusätzlich zur weiteren Herabsetzung der Rei­bung noch poliert sein können. Dadurch kann wiederum die Dichtung der Seitenflächen der Fassung gegenüber den Wandungen der Nut in der Druck­platte und gegenüber einem darin angeordneten Druckraum verbessert wer­denThe line-shaped end of the screw, the pin or the flat fitting pieces in the guide groove transmit horizontal thrust forces acting on the seal to the pressure plate. The friction on the side surfaces of the socket in the groove is kept low, for which purpose a lubrication of these surfaces can also be provided, which can be polished in addition to further reducing the friction. This in turn can seal the Side surfaces of the socket relative to the walls of the groove in the pressure plate and relative to a pressure space arranged therein can be improved

Soweit gemäß einem weiteren Ausführungsbeispiel der Erfindung in der Nut ein Druckmittelschlauch parallel zur Fassung verlaufend angeordnet ist, kann dieser Schlauch mit seinem Druckmittel nicht nur die Fassung mit der Dichtungsleiste gegen das Preßband elastisch andrücken, sondern gleichfalls als Kühlmittel für die Fassung und die Dichtung dienen.Insofar as, according to a further exemplary embodiment of the invention, a pressure medium hose is arranged in the groove running parallel to the socket, this hose can not only press the socket with the sealing strip against the pressure band elastically with its pressure medium, but also serve as a coolant for the socket and the seal.

Bevorzugte Ausführungsformen der Erfindung sind in den Unteransprüchen enthalten.Preferred embodiments of the invention are contained in the subclaims.

Auf der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Es zeigen:

  • Fig. 1 eine Ansicht einer Druckplatte _ von der Seite des Pressbandes gesehen _, die in Verbin­dung mit dem Pressband eine Druckkammer bildet,
  • Fig. 2 einen Schnitt nach der Linie II-II in Fig. 1,
  • Fig. 3 einen senkrechten Schnitt derselben Druckplatte mit beidseitiger Führung der Fassung,
  • Fig. 4 eine Seitenansicht der Fassung mit senk­rechter Nut und darin eingreifenden Führungsstift,
  • Fig. 5 einen Schnitt der Druckplatte entsprechend Fig. 2 mit in der Führung eingesetzten Schmiernip­pel,
  • Fig. 6 einen senkrechten Schnitt der Druckplatte mit abgeänderter Befestigung der Fassung und der Führung, entsprechend der Schnittlinie VI-VI in Fig. 7,
  • Fig. 7 eine Seitenansicht der Druckplatte nach Fig. 6,
  • Fig. 8 einen senkrechten Schnitt eines weiteren Ausführungsbeispieles der Führung der Fassung und
  • Fig. 9 eine Seitenansicht der Vorrichtung mit auf die umlautenden Pressbänder einwirkenden Druck­platten zur Flächenpressung von plattenförmigen Werkstücken.
Exemplary embodiments of the invention are shown in the drawing. Show it:
  • 1 is a view of a pressure plate _ seen from the side of the press belt _, which forms a pressure chamber in connection with the press belt,
  • 2 shows a section along the line II-II in FIG. 1,
  • 3 shows a vertical section of the same pressure plate with the frame being guided on both sides,
  • 4 is a side view of the socket with a vertical groove and a guide pin engaging therein,
  • 5 shows a section of the pressure plate corresponding to FIG. 2 with the lubricating nipple inserted in the guide,
  • 6 is a vertical section of the pressure plate with modified attachment of the socket and the guide, according to section line VI-VI in Fig. 7,
  • 7 is a side view of the pressure plate of FIG. 6,
  • Fig. 8 is a vertical section of another embodiment of the guide of the socket and
  • Fig. 9 is a side view of the device with pressure plates acting on the surrounding press belts for surface pressure of plate-shaped workpieces.

Die erfindungsgemässe Vorrichtung besteht aus einem unteren Rahmen 10 und einem oberen Rah­men 11, in die jeweils endlose Pressbänder 12 einge­baut sind. Die Pressbänder 12 sind auf Umlenkrollen 13 gespannt und von diesen antreibbar. Sie sind mit einem Spalt zueinander angeordnet, der der Breite ei­nes zu bearbeitenden Werkstückes 14 entspricht. Während die Pressbänder 12 mit ihren das Werk­stück 14 berührenden Oberflächen eine waagerech­te Bewegung ausführen, wird das Werkstück 14 in die Vorrichtung, und zwar in den Spalt, der zwischen den Oberflächen besteht, hineingezogen und dort von den Oberflächen der Pressbänder 12 mit Druck beaufschlagt. Bei Durchlauf des Werkstückes 14 durch die Vorrichtung erfolgt somit seine Bearbei­tung, so dass es als fertig bearbeitetes Werkstück den Spalt zwischen den Pressbändern 12 am Austritt aus der Vorrichtung verlässt (Fig. 9).The device according to the invention consists of a lower frame 10 and an upper frame 11, in each of which endless press belts 12 are installed. The press belts 12 are tensioned on deflection rollers 13 and can be driven by them. They are arranged with respect to one another with a gap which corresponds to the width of a workpiece 14 to be machined. While the press belts 12 carry out a horizontal movement with their surfaces touching the workpiece 14, the workpiece 14 is drawn into the device, specifically into the gap that exists between the surfaces, and is pressurized there by the surfaces of the press belts 12. When the workpiece 14 passes through the device, it is processed so that it leaves the gap between the press belts 12 at the outlet from the device as a finished workpiece (FIG. 9).

Im vorliegenden Beispiel werden auf der Ober- und Unterseite des Werkstücks 14 Folien 15 aufge­presst, die von Vorratsrollen 16 ablaufen. Zur Erzeugung des gewünschten Druckes kann der obere Rahmen 11 insgesamt gegen den unteren Rahmen 10 gepresst werden oder es kann nach einer Grobein­stellung des Abstandes zwischen dem oberen Rah­men 11 und dem unteren Rahmen 10 der erforderli­che Druck mittels eines Luftdruckes ausgeübt wer­den, der in Druckkammern 17 herrscht, die jeweils an der Rückseite des Pressbandes 12 in Bezug auf das Werkstück 14, also an der Oberfläche des Pressban­des 12 angeordnet sind, die nicht mit dem Werkstück 14 in Berührung steht.In the present example, foils 15, which run off supply rolls 16, are pressed onto the top and bottom of the workpiece 14. For generation of the desired pressure, the upper frame 11 can be pressed against the lower frame 10 as a whole or, after a rough adjustment of the distance between the upper frame 11 and the lower frame 10, the required pressure can be exerted by means of an air pressure which prevails in pressure chambers 17 which are each arranged on the back of the press belt 12 with respect to the workpiece 14, that is to say on the surface of the press belt 12 which is not in contact with the workpiece 14.

Im vorliegenden Beispiel sind für die Grobeinstel­lung Führungsschlitten 18 vorgesenen, die an dem unteren Rahmen 10 fest angeordnet sind und an de­nen der obere Rahmen 11 in senkrechter Richtung verschiebbar ist. Für die Verschiebung sorgen Hy­draulikzylinder 19. Die Druckkammern 17 sind von Druckplatten 20 begrenzt, die gegenüber den Rah­men 10 und 11 geführt sind und von Hydraulikzylin­dern 21 bewegt werden.In the present example, guide slides 18 are provided for the rough adjustment, which are fixedly arranged on the lower frame 10 and on which the upper frame 11 can be displaced in the vertical direction. Hydraulic cylinders 19 provide for the displacement. The pressure chambers 17 are delimited by pressure plates 20 which are guided relative to the frames 10 and 11 and are moved by hydraulic cylinders 21.

Die Druckplatte 20 weist an ihrer dem Pressband 12 zugewandten Oberfläche randseitig eine umlau­fende Nut 22 zur Befestigung einer Dichtungsleiste 23 auf. Im eingebauten Zustand liegt die Dichtungs­leiste 23 am umlaufenden Pressband 12 an, das im Betrieb an der Dichtungsleiste 23 entlanggleitet. Die Druckkammer 17 wird somit von der Oberfläche der Druckplatte 20, von der von dem Werkstück 14 ab­gewandten Oberfläche des Pressbandes 12 und von der umlaufenden Dichtungsleiste 23 gebildet. Über Öffnungen 24 (Fig. 1) kann ein Druckmittel wie Druckluft durch die Druckplatte 20 hindurch in die Druckkammer 17 eingeleitet werden. Die gesamte Druckplatte 20 ist beispielsweise um eine senkrecht zum Pressband 12 verlaufende mittlere Achse 25 drehbar, so dass bei ihrer rechteckigen Ausbildung mit unterschiedlichen Seitenlängen eine Einstellung der Druckkammerbreite auf verschiedene Werk­stückbreiten erfolgen kann.The pressure plate 20 has on its surface facing the press belt 12 a peripheral groove 22 for fastening a sealing strip 23 on the edge. In the installed state, the sealing strip 23 lies against the circumferential press belt 12, which slides along the sealing strip 23 during operation. The pressure chamber 17 is thus formed by the surface of the pressure plate 20, by the surface of the press belt 12 facing away from the workpiece 14 and by the circumferential sealing strip 23. A pressure medium such as compressed air can be introduced into the pressure chamber 17 through the pressure plate 20 via openings 24 (FIG. 1). The entire pressure plate 20 can be rotated, for example, about a central axis 25 running perpendicular to the press belt 12, so that its rectangular configuration with different side lengths allows the pressure chamber width to be adjusted to different workpiece widths.

Die Dichtungsleiste 23 lagert ohne Spiel in einer Nut 26 der Fassung 27, die in der Nut 22 der Druck­platte 20 höhenbewegbar gehalten und im Quer­schnitt rechteckig ausgebildet ist. Die Fassung 27 und Dichtungsleiste 23 bilden somit eine Einheit. Die in der Nut 22 der Druckplatte 20 höhenbewegbare Fassung 27 wird von einem Druckmittelschlauch 28 elastisch gehalten, der mit einer seitlich der Druck­platte 20 befestigten Druckmittelleitung 29 verbun­den ist. Um die währends des Betriebes vom Press­band 12 auf die Dichtungsleiste 23 und damit auf die Fassung 27 einwirkenden Kräfte in der Nut 22 in der jeweiligen Durchlaufrichtung des Werkstückes 14 gleichmässig zu verteilen, sind auf dem Umfang der Druckplatte 20 in Abständen mehrere die Fassung 27 haltende Führungen 30 angeordnet. Diese Füh­rungen 30 sind beispielsweise von handelsüblichen Schrauben 31 gebildet, deren Gewindeenden jeweils zu einem im Durchmesser kleiner gehaltenen Füh­rungsstift 32 ausgebildet sind. Diese Führungsstifte 32 greifen in seitlich in der Fassung 27 angeordnete Sacklochbohrungen 33 ein, die jeweils als quer zur Längsrichtung der Fassung verlaufende (senkrechte) Nut ausgebildet sind. Die Breite jeder Nut 33 ent­spricht dem Durchmesser der Führungsstifte 32, so dass durch ihre seitliche Linienberührung auch die nachteiligen horizontalen Schubkräfte der Fassung 27 in der Nut auf die Anzahl der Schrauben 31 verteilt werden. Ausserdem wird die Fassung 27 in Ruhe­stellung an einem Herausgleiten aus der Nut 22 ge­hindert.The sealing strip 23 is supported without play in a groove 26 of the socket 27, which is held vertically movable in the groove 22 of the pressure plate 20 and is rectangular in cross section. The socket 27 and sealing strip 23 thus form a unit. The mount 27, which can be moved vertically in the groove 22 of the pressure plate 20, is held elastically by a pressure medium hose 28 which is connected to a pressure medium line 29 which is attached to the side of the pressure plate 20. In order to evenly distribute the forces acting on the sealing strip 23 and thus on the socket 27 during operation from the press belt 12 in the groove 22 in the respective direction of travel of the workpiece 14, there are several guides holding the socket 27 at intervals on the circumference of the pressure plate 20 30 arranged. These guides 30 are formed, for example, by commercially available screws 31, the threaded ends of which are each formed into a guide pin 32 which is kept smaller in diameter. These guide pins 32 engage in blind bores 33 arranged laterally in the holder 27, each of which is designed as a (vertical) groove running transversely to the longitudinal direction of the holder. The width of each groove 33 corresponds to the diameter of the guide pins 32, so that through their lateral line contact adverse horizontal shear forces of the socket 27 are distributed in the groove to the number of screws 31. In addition, the socket 27 is prevented from sliding out of the groove 22 in the rest position.

Um die Fassung 27 in der Nut 22 in vertikaler Rich­tung ohne grosses Spiel leichtgängig zu führen, kann es vorteilhaft sein, die seitlichen Flächen der Fassung 27 wie auch der Nut 22 entsprechend zu veredeln, z. B. zu polieren od. dgl., oder mit einem Schmiermit­tel zu versehen, wobei die Nuten 33 dann gleichzeitig Schmiertaschen bilden. Es kann auch vorteilhaft sein, derartige Führungen 30 beidseitig der Fassung 27 anzuordnen; dabei ist dann eine weitere im Ab­stand der Nut 22 angeordnete Nut 34 in der Druck­platte 20 zum Einführen der Schrauben 31 erforder­lich. Die Breite dieser Nut 34 entspricht mindestens der Länge einer Schraube 31 (vgl. Fig. 3).In order to smoothly guide the socket 27 in the groove 22 in the vertical direction without great play, it can be advantageous to refine the lateral surfaces of the socket 27 as well as the groove 22 accordingly, e.g. B. to polish or the like. Or to provide with a lubricant, the grooves 33 then simultaneously forming lubrication pockets. It can also be advantageous to arrange such guides 30 on both sides of the holder 27; a further groove 34 arranged at a distance from the groove 22 in the pressure plate 20 is then required for inserting the screws 31. The width of this groove 34 corresponds at least to the length of a screw 31 (cf. FIG. 3).

In den Schrauben 31 (Fig. 5) sind beispielsweise Schmiernippel 35 eingeschraubt, um in Zeitabstän­den neues Schmiermittel wie Fett od. dgl. nachzufül­len. Hierbei weisen die Schrauben 31 in ihrer Längs­richtung jeweils eine Schmierbohrung 36 auf, die in der Nut 33 endet und das Schmiermittel einleitet.Lubricating nipples 35, for example, are screwed into the screws 31 (FIG. 5) in order to refill new lubricants such as grease or the like at intervals. Here, the screws 31 each have a lubrication bore 36 in their longitudinal direction, which ends in the groove 33 and introduces the lubricant.

Bei den in Fig. 6 bis 8 dargestellten Ausführungs­beispielen ist jeweils die Nut 22 von einer umlaufen­den Profilleiste 37 begrenzt, die mittels Schrauben 38 randseitig an der Druckplatte 20 befestigt ist. Die­se Profilleiste 37 ist winkelförmig ausgebildet; deren kurzer Schenkel 37a liegt an der Druckplatte 20 an, durch den auch die Schrauben 38 geführt und in die Druckplatte 20 eingeschraubt sind. An der Anlage­fläche zwischen Druckplatte 20 und Schenkel 37a ist eine Ringdichtung 39 angeordnet, welche die ge­bildete Nut 22 nach oben abdichtet. Ausserdem ist parallel zu den Schrauben 38 eine Bohrung 40 für die Zuführung eines Druckmittels angeordnet, die in die Nut 22 einmündet. Dieses Druckmittel wirkt auf ein Dichtungsprofil 41, das in der Nut 22 zwischen der Fassung 27 und dem Nutengrund angeordnet ist. Durch das Druckmittel wird die Fassung 27 elastisch auf das Pressband 12 aufgedrückt.In the exemplary embodiments shown in FIGS. 6 to 8, the groove 22 is in each case delimited by a circumferential profile strip 37 which is fastened to the pressure plate 20 by means of screws 38 on the edge. This profile strip 37 is angular; whose short leg 37a bears against the pressure plate 20, through which the screws 38 are also guided and screwed into the pressure plate 20. An annular seal 39 is arranged on the contact surface between the pressure plate 20 and the leg 37a, which seals the groove 22 formed upwards. In addition, a bore 40 for supplying a pressure medium is arranged parallel to the screws 38, which opens into the groove 22. This pressure medium acts on a sealing profile 41 which is arranged in the groove 22 between the socket 27 and the groove base. The holder 27 is pressed elastically onto the press belt 12 by the pressure medium.

Zur Halterung und Führung der Fassung 27 sind in dem senkrechten Schenkel 37b der Profilleiste 37 in Abständen von der Unterkante mehrere Passstücke 42 mittels Schrauben 43 befestigt, die parallel zu der Fassung 27 von Nuten nach oben verlaufen. Dazu weisen die Passstücke 42 ein Langloch 44 auf, durch das jeweils die Schraube 43 hindurchgesteckt ist und das Passstück 42 einstellbar hält. Das Passstück 42 kann somit waagerecht in Richtung zur Fassung 27 verschoben werden (Fig. 6 und 7).For holding and guiding the socket 27, a plurality of fitting pieces 42 are fastened in the vertical leg 37b of the profiled strip 37 at intervals from the lower edge by means of screws 43, which run parallel to the socket 27 from grooves upwards. For this purpose, the fitting pieces 42 have an elongated hole 44, through which the screw 43 is inserted and holds the fitting piece 42 in an adjustable manner. The fitting piece 42 can thus be moved horizontally in the direction of the holder 27 (FIGS. 6 and 7).

Die zur Fassung 27 gerichteten Stirnflächen der Passstücke 42 greifen hierbei jeweils in eine nach un­ten offene Nut 45 ein. Die Seitenflanken der Pass­stücke 42, die mit den Seitenflanken der Nuten 45 aneinandergleiten, nehmen die horizontalen Schub­kräfte durch das umlaufende Pressband 12 auf und übertragen diese von der Fassung 27 auf die gesam­te Druckplatte 20. Dadurch ist eine einwandfreie ver­tikale Führung der Fassung 27 in der Nut 22 gewähr­leistet; ein Verkanten der Fassung 27 wird verhin­dert.The end faces of the fitting pieces 42, which face the socket 27, each engage in a downwardly open groove 45. The side flanks of the fitting pieces 42, which slide against one another with the side flanks of the grooves 45, absorb the horizontal thrust forces from the circumferential press belt 12 and transfer them from the socket 27 to the entire pressure plate 20. This ensures that the socket 27 is properly guided vertically in the groove 22 guaranteed; tilting of the socket 27 is prevented.

Das Passstück 42 ist dabei beispielsweise oben­seitig halbkreisförmig ausgebildet, wodurch sich die Fertigung wesentlich vereinfachen lässt (vgl. Fig. 7).The fitting piece 42 is, for example, semicircular on the upper side, as a result of which manufacturing can be simplified considerably (see FIG. 7).

Die Fig. 8 zeigt eine weitere Möglichkeit der Füh­rung der Fassung 27. Hier ist das Passstück 46 von unten in eine Aufnahmeaussparung 47 gelagert und mittels Schrauben 48 rechtwinklig zur Fassung 27 einstellbar gehalten. Die Passstücke 46 können hier als kurze Leistenabschnitte ausgebildet sein, in die jeweils zwei Schrauben 48 eingreifen. Die Fassung 27 wird hierbei grossflächig an den Passstücken 46 geführt. In die leistenförmigen Passstücke 46 lassen sich zur besseren Gleitung auch Schmiernippel 35 befestigten, über die ein Schmiermittel zugeführt werden kann, um die Reibung zu mindern.FIG. 8 shows a further possibility of guiding the socket 27. Here, the fitting piece 46 is supported from below in a receiving recess 47 and is held adjustable by means of screws 48 at right angles to the socket 27. The fitting pieces 46 can be designed here as short strip sections into which two screws 48 engage. The socket 27 is guided over a large area on the fitting pieces 46. For better sliding, lubricating nipples 35 can also be fastened into the strip-shaped fitting pieces 46, via which a lubricant can be supplied in order to reduce the friction.

Derartige in Fig. 6 bis 8 dargestellte Passstücke 42, 46 zeigen den Vorteil, dass horizontale Schub­kräfte, die von der Dichtungsleiste 23 auf die Fas­sung 27 abgeleitet werden, auf die Seitenflächen (d.h. breitflächig) der Passstücke 42, 46 bzw. auf die benachbarten Anlageflächen der Profilleiste 37 über­tragen und damit von der Druckplatte 20 aufgenom­men werden.Such fitting pieces 42, 46 shown in FIGS. 6 to 8 have the advantage that horizontal thrust forces, which are derived from the sealing strip 23 on the socket 27, on the side surfaces (ie over a wide area) of the fitting pieces 42, 46 or on the adjacent contact surfaces the profile bar 37 transferred and thus be taken up by the pressure plate 20.

Die dargestellten Führungsstifte 32 oder Pass­stücke 42, 46 sind mittels der seitlich oder press­bandseitig eingeführten Schrauben 31, 43, 48 od. dgl. verstellbar, so dass ihr Andruck an der Fassung 27 veriabel ist.The illustrated guide pins 32 or fitting pieces 42, 46 can be adjusted by means of the screws 31, 43, 48 or the like inserted laterally or on the press belt side, so that their pressure on the holder 27 is variable.

Claims (10)

1. Apparatus for applying a surface pressure to moving workpieces such as wood material panels or the like in which at least one circulating pressing belt (12) can be pressed against the workpiece (14) by a pressure medium which can be introduced into a rectangular pressure chamber (17) which adjoins the pressing belt and which is sealed by means of a sealing strip (23) extending therearound, at the side of a pressure plate (20) which is towards the pressing belt, wherein the sealing strip (23) is fixedly connected to a correspondingly rectangular holder frame (27) which is guided in a groove in the pressure plate, mounted movably inwards and outwards of the groove, and is pressure-loaded towards the pressing belt which is arranged to slide along the sealing strip, characterised in that at the periphery of the pressure plate (20) at spacings from each other a plurality of support members for holding and guiding the holder frame (27) are fitted into the pressure plate, directed inwardly from the outside periphery, which support members, in the form of a screw (31), pin (32) or fitting member (42, 46), can be advanced adjustably in their longitudinal direction extending transversely with respect to the flank of the associated part of the holder frame, the projecting end of the respective support member or members each engaging into a respective one of guide grooves (34, 35) which are arranged laterally in the holder frame (27) and which extend perpendicularly to the surface of the pressing belt (12), and that each guide groove (33, 45) has at least one boundary which forms an abutment surface and limits the outward movement of the holder.
2. Apparatus according to claim 1 characterised in that the groove (33, 45) is of an arcuate configura­tion at the ends or at one end.
3. Apparatus according to claim 1 characterised in that the screw (31), the pin (32) or the like is provided with an (open) lubricating bore (36) which terminates in front of the side surface of the holder (27).
4. Apparatus according to claim 1 characterised in that the lateral groove (33) is in the form of a lubricating pocket.
5. Apparatus according to one of claims 1 to 4 characterised in that the side surfaces of the holder (27) and the groove (22) accomodating same are finished (polished).
6. Apparatus according to claim 1 characterised in that the lateral groove (45) is open at the pressing belt side.
7. Apparatus according to claim 1 characterised in that the fitting member (42, 46) is mounted displaceably in a shaped bar member (37) which is secured to the pressure plate (20) and of which one side surface forms a part of the groove (22) ac­comodating the holder (27) (Figures 6 to 8).
8. Apparatus according to claim 7 characterised in that the fitting member (42) is held by means of a screw (43) which is fitted into the shaped bar mem­ber (37) perpendicularly to the plane of the pressing belt ( 12), at the pressing belt side.
9. Apparatus according to claim 7 characterised in that the fitting member (46) is held by means of a screw (48) which is fitted into the shaped bar mem­ber (37) parallel to the plane of the pressing belt (12) from the side.
10. Apparatus according to one of claims 1 to 9 characterised in that a pressure medium tube (28) is mounted parallel to the holder (27) in the groove (22) accomodating the holder, the pressure medium tube (28) moving the holder (27) in the direction of the pressing belt (12) and being supplied by way of a pressure medium line (29).
EP84103509A 1983-04-13 1984-03-30 Belt press with a pressure chamber Expired - Lifetime EP0128282B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84103509T ATE27120T1 (en) 1983-04-13 1984-03-30 BELT PRESS AND PRESSURE CUSHION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3313406A DE3313406C3 (en) 1983-04-13 1983-04-13 Device for applying a surface pressure to progressive workpieces
DE3313406 1983-04-13

Publications (3)

Publication Number Publication Date
EP0128282A1 EP0128282A1 (en) 1984-12-19
EP0128282B1 EP0128282B1 (en) 1987-05-13
EP0128282B2 true EP0128282B2 (en) 1991-02-27

Family

ID=6196299

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84103509A Expired - Lifetime EP0128282B2 (en) 1983-04-13 1984-03-30 Belt press with a pressure chamber

Country Status (8)

Country Link
US (1) US4537408A (en)
EP (1) EP0128282B2 (en)
JP (1) JPS60174609A (en)
AT (1) ATE27120T1 (en)
DE (1) DE3313406C3 (en)
ES (1) ES287004Y (en)
FI (1) FI79669C (en)
IN (1) IN160637B (en)

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WO2014100846A3 (en) * 2012-12-27 2015-04-09 Berndorf Band Gmbh Sealing system for a moving metal strip and strip casting installation comprising said type of sealing system

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JPS6354222A (en) * 1986-08-25 1988-03-08 Mitsubishi Rayon Eng Co Ltd Continuous pressurizing device
AT385681B (en) * 1986-08-18 1988-05-10 Andritz Ag Maschf PRINTING DEVICE FOR MACHINES OR PROVIDED MACHINE FOR DRAINING OR FILTER OR FOR PRESSED GOODS
USRE35091E (en) * 1986-08-18 1995-11-21 Mascheninfabrik Andritz Actiengesellschaft Pressure device and seal for filter belt machines
JPS6354223A (en) * 1986-08-25 1988-03-08 Mitsubishi Rayon Eng Co Ltd Continuous pressurizing device
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AT513821A1 (en) * 2012-12-27 2014-07-15 Berndorf Band Gmbh Sealing system for a moving metal strip and strip casting machine with such a sealing system
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Also Published As

Publication number Publication date
FI79669C (en) 1990-02-12
FI841466L (en) 1984-10-14
ES287004Y (en) 1986-12-01
DE3313406C3 (en) 1994-02-24
JPS60174609A (en) 1985-09-07
IN160637B (en) 1987-07-18
FI841466A0 (en) 1984-04-12
DE3313406A1 (en) 1984-10-25
EP0128282B1 (en) 1987-05-13
US4537408A (en) 1985-08-27
EP0128282A1 (en) 1984-12-19
FI79669B (en) 1989-10-31
JPH0447601B2 (en) 1992-08-04
ES287004U (en) 1986-04-16
DE3313406C2 (en) 1994-02-24
ATE27120T1 (en) 1987-05-15

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