EP0087651B2 - Apparatus to support pressure bands in a roll-supported double band press - Google Patents
Apparatus to support pressure bands in a roll-supported double band press Download PDFInfo
- Publication number
- EP0087651B2 EP0087651B2 EP83101324A EP83101324A EP0087651B2 EP 0087651 B2 EP0087651 B2 EP 0087651B2 EP 83101324 A EP83101324 A EP 83101324A EP 83101324 A EP83101324 A EP 83101324A EP 0087651 B2 EP0087651 B2 EP 0087651B2
- Authority
- EP
- European Patent Office
- Prior art keywords
- press
- support bearing
- pressure
- roller
- shape
- 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
- 239000012530 fluid Substances 0.000 claims description 14
- 238000010438 heat treatment Methods 0.000 claims description 9
- 239000000314 lubricant Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 1
- 239000000463 material Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 5
- 239000010687 lubricating oil Substances 0.000 description 3
- 238000005461 lubrication Methods 0.000 description 3
- 239000003921 oil Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000011093 chipboard Substances 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Images
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
- B30B5/065—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 using anti-friction means for the pressing band
- B30B5/067—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 using anti-friction means for the pressing band using anti-friction roller means
-
- 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
Definitions
- the invention relates to a roller-supported double belt press according to the preamble of the preceding claim.
- Double belt presses are used to exert a surface pressure on plate-shaped workpieces or on material webs that are continuously guided through the machine with the supply or removal of heat to or from the pressed material.
- continuously operating double belt presses allow the pressed goods to move continuously and thus to overlap the pressing and transport process, but in particular to exert surface pressure on any length of material.
- Presses of known type work, as far as they have proven to be permanently reliable in the past, either according to the fluid cushion principle (cf. DE-A-2 737 629, DE-B-2 722 262, US-A-2 528 168) or according to Role principle.
- Disadvantages of the fluid cushion machines are their high energy requirement at higher pressures from approximately 200 N / cm 2 and the need existing there to fully cover the working width and length with press material or to provide partially switchable cushions which are susceptible to malfunction.
- the disadvantage of the roller-mounted double belt presses is the Hertzian pressure that occurs between the support rollers and the press belts, which limits the surface pressures that can be reliably controlled to a technically uninteresting area.
- an isochore-isobaric double belt press has become known, in the press frame of which pressure chambers are arranged, in which there is a roller bed with press rolls extending over the entire width of the pressure chamber, which are used to calibrate the pressed material.
- a fluid pressure medium which, in addition to the press rolls, serves to support the press belts.
- roller pressure exerted by the roller bed placed against the press belt with the pressure chamber is applied, thus increasing the overall surface pressure at such a level configured double belt press is achieved.
- the special design of the roller bed ensures safe operation while limiting the Hertzian pressure occurring on the press belt to a non-harmful size.
- the roller or fluid pressure can also be applied individually.
- a pressure is generated in the additional pressure chamber, which can be acted upon individually with fluid pressure media compared to the shape compensation chamber, and acts on the rollers via the heating plate and the support bearing strips of the roller bed.
- This pressure is applied from the rollers to the press belt and transferred from there to the material to be pressed.
- stresses would now arise in the press belt due to these deflections, which are greater than the tensile strength of the press belts and thus lead to their destruction.
- the lubricant contained in the shape compensation space which comprises the roller bed and is sealed on the sides by means of seals, is pressurized so that it acts as a pressure pad pressure medium and reduces the deflection of the press belt in the longitudinal direction. Since the total of the pressure applied via the roller bed and the pressure medium in the shape-compensating space acts on the material to be pressed, the transmitted surface pressure is simultaneously increased.
- full-needle needle sleeves are arranged in rows offset from one another on common axes in such a way that their radial distances are only so great that the Have voids between the heating plate, support, press belt and needle sleeves filled with a molded body that allows gaps of the same thickness between the heating plate, support, press belt and needle sleeves to form, into which liquid lubricant can penetrate under capillary action, but on the other hand ensures its shape that it does not hinder the necessary rotating and sliding movements between the press belt and needle sleeves.
- the fluid or gaseous pressure medium and the seals necessary to maintain the pressure cushion can be dispensed with if the liquid lubrication is maintained by replacing the drag losses of lubricant collected at the outlet of the roller bed.
- the gap height of the machine is dimensioned so that the rollers have no contact with the press belt and only the roller bed of the lower press belt takes up any sag of the belt package.
- the different pressures adapted to the material to be pressed are set in the individual fluid cushions.
- the shape compensation space comprising the entire roller bed and the pressure chamber are divided into individual and mutually independent, pressurizable fluid cushions which are sealed against one another.
- the needle rollers 2 which are usually arranged in rows parallel to the feed direction of the press belts 6 between support bearing strips 1 on support shafts 12, are offset by half a roller width such that every second support bearing bore 5 is replaced by an opening 3 which is larger than the capillary gap height 4 than the diameter of the needle roller 2.
- the bearing bores 5 and the opening 3 are offset longitudinally with respect to one another in the tape feed direction, so that needle rollers 2 installed between two bearing bores 5 are offset in the transverse direction.
- the cavity between two needle rollers 2 is filled by a filler 11 so that to the adjacent needle rollers 2, the heating plate 13 and the support bearing strips attached therein 1 gaps with a suitably dimensioned capillary gap height 4 are formed, into which liquid or semi-liquid lubricants 8 draw in under capillary action.
- liquid or semi-liquid lubricant 8 is now added to the belt or the roller surfaces of the first row of rollers at the entry of the press belts 6 into the roller bed 7, it is distributed across the roller gap 9 and the remaining excess of 2 adjacent needle rollers 2 each fed through the support bearing gap 10 in the middle of the next following needle roller 2 in the direction of tape feed, where the process described is repeated.
- an additional shape compensation space 19 and a pressure chamber 15 with seals 16 are provided over the entire roller bed 7 and can be acted upon by fluid pressure media.
- the shape compensation space 19 is delimited in the vertical direction by the heating plate 13 and the press belt 6.
- the pressure camera 15 is also limited in the vertical direction by the heating plate 13 and the closure 18. This makes it possible to exert a surface pressure on the press belt 6 in addition to the Hertzian pressure.
- the fluid pressure medium emerging from the shape-compensating space is stripped off and collected from the press belt with the aid of the seals 14. So that it cannot adversely affect the material to be pressed, bores 17, through which the pressure medium which has escaped are discharged, are made in the shape compensation space 19 comprising the roller bed and under vacuum or vacuum.
Description
Gegenstand der Erfindung ist eine wälzkörpergestützte Doppelbandpresse gemäss dem Oberbegriff des vorstehenden Patentanspruchs.The invention relates to a roller-supported double belt press according to the preamble of the preceding claim.
Doppelbandpressen dienen zur Ausübung eines Flächendrucks auf plattenförmige Werkstücke oder auf kontinuierlich durch die Maschine geführte Materialbahnen unter Zu- oder Abfuhr von Wärme an das oder aus dem Pressgut.Double belt presses are used to exert a surface pressure on plate-shaped workpieces or on material webs that are continuously guided through the machine with the supply or removal of heat to or from the pressed material.
Solche kontinuierlich arbeitenden Doppelbandpressen erlauben im Gegensatz zu den diskontinuierlich arbeitenden Plattenpressen die stetige Fortbewegung des Pressgutes und damit die Überlagerung von Press- und Transportvorgang, besonders jedoch die Ausübung von Flächendruck auf eine beliebig lange Materialbahn.In contrast to discontinuously operating plate presses, such continuously operating double belt presses allow the pressed goods to move continuously and thus to overlap the pressing and transport process, but in particular to exert surface pressure on any length of material.
Pressen bekannterArt arbeiten, soweit sie sich in der Vergangenheit als dauerhaft betriebssicher erwiesen haben, entweder nach dem Fluidkissenprinzip (vgl. DE-A- 2 737 629, DE-B- 2 722 262, US-A- 2 528 168) oder nach dem Rollenprinzip. Nachteil der Fluidkissenmaschinen ist deren hoher Energiebedarf bei höheren Drücken ab etwa 200 N/cm2 sowie die dort bestehende Notwendigkeit, die Arbeitsbreite und -länge voll mit Pressgut auszulegen oder störungsanfällige teilabschaltbare Kissen vorzusehen. Nachteil der rollengelagerten Doppelbandpressen ist die zwischen den Stützrollen und den Pressbändern auftretende Hertz'sche Pressung, die die betriebssicher beherrschbaren Flächendrücke auf einen technisch wenig interessanten Bereich begrenzt.Presses of known type work, as far as they have proven to be permanently reliable in the past, either according to the fluid cushion principle (cf. DE-A-2 737 629, DE-B-2 722 262, US-A-2 528 168) or according to Role principle. Disadvantages of the fluid cushion machines are their high energy requirement at higher pressures from approximately 200 N / cm 2 and the need existing there to fully cover the working width and length with press material or to provide partially switchable cushions which are susceptible to malfunction. The disadvantage of the roller-mounted double belt presses is the Hertzian pressure that occurs between the support rollers and the press belts, which limits the surface pressures that can be reliably controlled to a technically uninteresting area.
Aus der DE-A1 -2 729 263 ist eine isochore-isobare Doppelbandpresse bekannt geworden, in deren Pressengestell Druckkammern angeordnet sind, in denen sich ein Rollenbett mit über die gesamte Breite der Druckkammer reichenden Presswalzen befindet, die zur Kalibrierung des Pressgutes dienen sollen. In den mit Dichtungen versehenen Druckkammern befindet sich ein fluides Druckmittel, das neben den Presswalzen zur Abstützung der Pressbänder dient.From DE-A1 -2 729 263, an isochore-isobaric double belt press has become known, in the press frame of which pressure chambers are arranged, in which there is a roller bed with press rolls extending over the entire width of the pressure chamber, which are used to calibrate the pressed material. In the pressure chambers provided with seals there is a fluid pressure medium which, in addition to the press rolls, serves to support the press belts.
Die grosse Länge dieser Presswalzen führt jedoch zu einer starken Durchbiegung in Querrichtung, insbesondere bei höheren Drücken. Ebenfalls aufgrund ihrer großen Länge müssen die Presswalzen einen größeren Radius besitzen, so daß in Längsrichtung keine dichte Anordnung möglich ist. Somit istweder eine Kalibrierung des Pressgutes noch eine einigermassen wirksame Stützung der Pressbänder zu erreichen. Eine Lehre zur Beherrschung der Hertz'schen Pressung auf für die Pressbänder zulässige Grösse wird ebenfalls nicht gegeben.However, the large length of these press rolls leads to a strong deflection in the transverse direction, especially at higher pressures. Also due to their long length, the press rolls must have a larger radius, so that a tight arrangement in the longitudinal direction is not possible. Thus, neither a calibration of the pressed material nor a reasonably effective support of the press belts can be achieved. There is also no teaching on mastering Hertzian pressure to the size permitted for the press belts.
Es hat sich herausgestellt, dass man ein solches Rollenbett einer isochoren-isobaren, wälzkörpergestützten Doppelbandpresse verbessern, d.h. den Bereich der betriebssicher beherrschbaren Flächendrücke bei Doppelbandpressen wesentlich erweitern kann, ohne die Vorteile sowohl des Fluidkissenprinzips als auch des rollengelagerten Prinzips aufzugeben.It has been found that such a roller bed of an isochore-isobaric, roller-supported double belt press is improved, i.e. can significantly expand the range of reliably controllable surface pressures in double belt presses without giving up the advantages of both the fluid cushion principle and the roller-bearing principle.
Es wurde nun gefunden, daß man durch eine besondere Ausgestaltung des Rollenbettes in der als Formausgleichsraum wirkenden Druckkammer im Falle eines flüssigen Druckmittels wie Öl, Einsatz des im Formausgleichsraum befindlichen Schmiermittels als Druckmittel und Anordnung einer zusätzlichen, gegenüber dem Formausgleichsraum abgedichteten Druckkammer die vorgenannte Aufgabe lösen kann.It has now been found that a special configuration of the roller bed in the pressure chamber acting as a shape-compensating chamber in the case of a liquid pressure medium such as oil, use of the lubricant located in the shape-compensating space as pressure medium and arrangement of an additional pressure chamber sealed off from the shape-compensating chamber can achieve the aforementioned task .
Die mit der Erfindung erzielbaren Vorteile bestehen darin, daß zusätzlich zu dem fluiden Druck, der über das im Formausgleichsraum wirkende Druckmittel ausgeübt wird, ein durch das mit der Druckkammer gegen das Pressband angestellte Rollenbett ausgeübter Rollendruck aufgebracht wird, womit ein insgesamt erhöhter Flächendruck bei einer solchermassen ausgestalteten Doppelbandpresse erreicht wird. Durch die besondere Ausgestaltung des Rollenbettes wird ein sicherer Betrieb unter Begrenzung der auf dem Pressband auftretenden Hertz'schen Pressung auf eine nicht schädliche Grösse erreicht. Zum wahlweisen isochoren oder isobaren Betrieb der Doppelbandpresse können der Rollen- oder der Fluiddruck auch einzeln aufgebracht werden.The advantages that can be achieved with the invention are that, in addition to the fluid pressure exerted by the pressure medium acting in the shape-compensating space, a roller pressure exerted by the roller bed placed against the press belt with the pressure chamber is applied, thus increasing the overall surface pressure at such a level configured double belt press is achieved. The special design of the roller bed ensures safe operation while limiting the Hertzian pressure occurring on the press belt to a non-harmful size. For optional isochoric or isobaric operation of the double belt press, the roller or fluid pressure can also be applied individually.
In der zusätzlichen, gegenüber dem Formausgleichsraum einzeln mit fluiden Druckmitteln beaufschlagbaren Druckkammer wird ein Druck erzeugt, der über die Heizplatte und die Stützlagerleisten des Rollenbettes auf die Rollen wirkt. Von den Rollen wird dieser Druck auf das Pressband aufgebracht und von diesem auf das Pressgut übertragen. Dadurch entsteht im Pressgut eine Reaktionskraft, die das Pressband in dem ungestützten Bereich zwischen zwei Rollen in Längsrichtung zu durchbiegen versucht. Zusammen mit der Verformung durch die Hertz'sche Pressung würden nun Spannungen im Pressband aufgrund dieser Durchbiegungen entstehen, die größer als die Zugfestigkeit der Preßbänder sind und damit zu einer Zerstörung derselben führen. Im Falle eines flüssigen Druckmittels wie Öl ist das in dem Formausgleichsraum, der das Rollenbett umfasst und zu den Seiten mittels Dichtungen abgedichtet ist, enthaltene Schmiermittel ist unter Druck gesetzt, so daß es als Druckkissen-Druckmittel wirkt und die Durchbiegung des Pressbandes in Längsrichtung vermindert. Da auf das Preßgut insgesamt die Summe des über das Rollenbett und das Druckmittel im Formausgleichsraum aufgebrachten Druckes einwirkt, wird gleichzeitig der übertragene Flächendruck erhöht.A pressure is generated in the additional pressure chamber, which can be acted upon individually with fluid pressure media compared to the shape compensation chamber, and acts on the rollers via the heating plate and the support bearing strips of the roller bed. This pressure is applied from the rollers to the press belt and transferred from there to the material to be pressed. This creates a reaction force in the material to be pressed, which tries to bend the press belt in the unsupported area between two rollers in the longitudinal direction. Together with the deformation caused by Hertzian pressure, stresses would now arise in the press belt due to these deflections, which are greater than the tensile strength of the press belts and thus lead to their destruction. In the case of a liquid pressure medium such as oil, the lubricant contained in the shape compensation space, which comprises the roller bed and is sealed on the sides by means of seals, is pressurized so that it acts as a pressure pad pressure medium and reduces the deflection of the press belt in the longitudinal direction. Since the total of the pressure applied via the roller bed and the pressure medium in the shape-compensating space acts on the material to be pressed, the transmitted surface pressure is simultaneously increased.
Um die Schmierung aller gegeneinander gleitenden oder aufeinander abrollenden Elemente des Rollenbettes sicherzustellen, werden vollnadelige Nadelhülsen auf gemeinsamen Achsen reihenweise gegeneinander versetzt so angeordnet, dass ihre radialen Abstände lediglich so gross sind, dass sich die Hohlräume zwischen Heizplatte, Stütze, Pressband und Nadelhülsen durch einen Formkörper ausfüllen lassen, der einerseits die Ausbildung von Spalte gleicher, geringer Dicke zwischen Heizplatte, Stütze, Pressband und Nadelhülsen zulässt, in die flüssiges Schmiermittel unter Kapillarwirkung eindringen kann, andererseits jedoch durch seine Formgebung sicherstellt, dass er die notwendigen Dreh- und Gleitbewegungen zwischen Pressband und Nadelhülsen nicht behindert.In order to ensure the lubrication of all elements of the roller bed that slide or roll against one another, full-needle needle sleeves are arranged in rows offset from one another on common axes in such a way that their radial distances are only so great that the Have voids between the heating plate, support, press belt and needle sleeves filled with a molded body that allows gaps of the same thickness between the heating plate, support, press belt and needle sleeves to form, into which liquid lubricant can penetrate under capillary action, but on the other hand ensures its shape that it does not hinder the necessary rotating and sliding movements between the press belt and needle sleeves.
Wird eine Doppelbandpresse mit Rollenbett innerhalb eines beispielsweise nach DE-B- 2 722 197 bzw. DE-A- 2 907 087 ausgebildeten Fluidkissens mit Öl als Druckmittel betrieben, so kann die Anordnung von Füllkörpern entfallen, da das Druckmittel die Schmierung sicherstellt.If a double belt press with a roller bed is operated with oil as a pressure medium within a fluid cushion designed, for example, according to DE-B-2 722 197 or DE-A-2 907 087, the arrangement of packing elements can be dispensed with, since the pressure medium ensures lubrication.
Soll die erfindungsgemässe Maschine nur isochor betrieben werden, so kann auf das fluide oder gasförmige Druckmittel und auf die zur Aufrechterhaltung des Druckkissens notwendigen Dichtungen verzichtet werden, wenn durch Ersatz der am Ausgang des Rollenbettes aufgefangenen Schleppverluste an Schmiermittel die flüssige Schmierung aufrechterhalten wird.If the machine according to the invention is only to be operated isochorically, then the fluid or gaseous pressure medium and the seals necessary to maintain the pressure cushion can be dispensed with if the liquid lubrication is maintained by replacing the drag losses of lubricant collected at the outlet of the roller bed.
Für rein isobaren Betrieb wird die Spalthöhe der Maschine so bemessen, daß die Rollen keinen Kontakt haben mit dem Preßband und lediglich das Rollenbett des unteren Preßbandes einen eventuellen Durchhang des Band-Preßgut-Paketes aufnimmt.For purely isobaric operation, the gap height of the machine is dimensioned so that the rollers have no contact with the press belt and only the roller bed of the lower press belt takes up any sag of the belt package.
Für das Pressgut, z. B. Spänevlies zur Herstellung von Spanplatten oder Glasfasergewebematte mit Kupferfolie zur Herstellung von Leiterplatten-Schichtstoff, werden in den einzelnen Fluidkissen die dem Pressgut angepassten unterschiedlichen Drücke eingestellt. Dazu ist der das gesamte Rollenbett umfassende Formausgleichsraum und die Druckkammer in einzelne und voneinander unabhängige mit Druck beaufschlagbare, gegeneinander abgedichtete Fluidkissen eingeteilt.For the pressed material, e.g. B. chip fleece for the production of chipboard or fiberglass mat with copper foil for the production of printed circuit board laminate, the different pressures adapted to the material to be pressed are set in the individual fluid cushions. For this purpose, the shape compensation space comprising the entire roller bed and the pressure chamber are divided into individual and mutually independent, pressurizable fluid cushions which are sealed against one another.
In der Zeichnung ist eine Ausführungsform der Erfindung in seitlicher Schnittansicht dargestellt.In the drawing, an embodiment of the invention is shown in a sectional side view.
Die üblicherweise in Reihen parallel zur Vorschubrichtung der Pressbänder 6 zwischen Stützlagerleisten 1 auf Stützwellen 12 angeordneten Nadelrollen 2 sind dadurch um eine halbe Rollenbreite gegeneinander so versetzt, dass jede zweite Stützlagerbohrung 5 durch einen Durchbruch 3 ersetzt ist, der um die Kapillarspalthöhe 4 grösser bemessen ist als der Durchmesser der Nadelrolle 2. An in Querrichtung benachbarten Stützlagerleisten 1 sind Lagerbohrungen 5 und Durchbruch 3 in Bandvorschubrichtung längs gegeneinander versetzt, so dass jeweils zwischen zwei Lagerbohrungen 5 eingebaute Nadelrollen 2 in Querrichtung versetzt liegen. Der Hohlraum zwischen zwei Nadelrollen 2 wird von einem Füllkörper 11 so ausgefüllt, dass zu den benachbarten Nadelrollen 2, der Heizplatte 13 und den darin befestigten Stützlagerleisten 1 Spalte mit einer geeignet bemessenen Kapillarspalthöhe 4 entstehen, in die flüssige oder halbflüssige Schmierstoffe 8 unter Kapillarwirkung einziehen.The
Wird nun am Eintritt der Pressbänder 6 in das Rollenbett 7 flüssiger oder halbflüssiger Schmierstoff 8 auf die Band- oder auch auf die Rollenoberflächen der ersten Rollenreihe gegeben, so wird er über den Wälzspalt 9 quer verteilt und der verbleibende Überschuss von je 2 benachbarten Nadelrollen 2 wird durch die Stützlagerlücke 10 mittig der in Bandvorschubrichtung nächstfolgenden Nadelrolle 2 zugeführt, wo sich der beschriebene Vorgang wiederholt. Auf der dem Pressband 6 abgewandten Seite ist über das gesamte Rollenbett 7 hinweg ein zusätzlicher, mit fluiden Druckmitteln beaufschlagbarer Formausgleichsraum 19 und eine Druckkammer 15 mit Dichtungen 16 vorgesehen.If liquid or semi-liquid lubricant 8 is now added to the belt or the roller surfaces of the first row of rollers at the entry of the
Der Formausgleichsraum 19 wird in vertikaler Richtung durch die Heizplatte 13 und das Pressband 6 begrenzt. Die Druckkamer 15 wird ebenfalls in vertikaler Richtung durch die Heizplatte 13 und den Abschluss 18 begrenzt. Damit wird ermöglicht, zusätzlich zur Hertz'schen Pressung einen Flächendruck auf das Pressband 6 auszuüben. Das aus dem Formausgleichsraum austretende fluide Druckmittel wird mit Hilfe der Dichtungen 14 vom Pressband abgestreift und angesammelt. Damit es nicht das Pressgut beeinträchtigen kann, sind an dem das Rollenbett umfassenden Formausgleichsraum 19 am Unterdruck oder Vakuum angeschlossene Bohrungen 17 eingebracht, durch die das ausgetretene Druckmittel abgeführt wird.The
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3207156 | 1982-02-27 | ||
| DE3207156 | 1982-02-27 |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP0087651A2 EP0087651A2 (en) | 1983-09-07 |
| EP0087651A3 EP0087651A3 (en) | 1984-11-28 |
| EP0087651B1 EP0087651B1 (en) | 1988-04-27 |
| EP0087651B2 true EP0087651B2 (en) | 1994-06-08 |
Family
ID=6156908
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP83101324A Expired - Lifetime EP0087651B2 (en) | 1982-02-27 | 1983-02-11 | Apparatus to support pressure bands in a roll-supported double band press |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US4485733A (en) |
| EP (1) | EP0087651B2 (en) |
| JP (1) | JPS58199698A (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3424599A1 (en) * | 1984-07-04 | 1986-01-09 | Fa. Theodor Hymmen, 4800 Bielefeld | DEVICE FOR APPLYING A SURFACE PRESS TO PROGRESSIVE WORKPIECES |
| DE3534478C2 (en) * | 1985-09-27 | 1995-01-26 | Held Kurt | Double belt press for the continuous pressing of material webs at elevated temperatures |
| US4794855A (en) * | 1986-08-05 | 1989-01-03 | Mitsubishi Rayon Engineering Co., Ltd. | Continuous press machine |
| CN1009443B (en) * | 1986-11-14 | 1990-09-05 | 库特·赫尔德·法布里肯特 | Process and apparatus for producing composite wood sheet |
| CN1017881B (en) * | 1987-12-16 | 1992-08-19 | 库特·赫尔德·法布里肯特 | Apparatus and method for manufacturing wood plank |
| CA2036755C (en) * | 1990-03-30 | 1998-06-02 | Friedrich Bernd Bielfeldt | Continuously-operating press |
| US5213819A (en) * | 1990-03-30 | 1993-05-25 | Maschinenfabrik, J. Dieffenbacher Gmbh & Co. | Continuously operating press |
| DE4128024A1 (en) * | 1991-08-23 | 1993-02-25 | Held Kurt | CONTINUOUSLY WORKING DOUBLE BAND PRESS |
| DE19615771A1 (en) * | 1996-04-20 | 1997-10-23 | Hymmen Theodor Gmbh | Double belt press for the manufacture and / or for the coating of sheet or plate-shaped workpieces of all kinds |
| US6908295B2 (en) * | 2000-06-16 | 2005-06-21 | Avery Dennison Corporation | Process and apparatus for embossing precise microstructures and embossing tool for making same |
| FI123522B (en) * | 2005-04-13 | 2013-06-14 | Raute Oyj | Press plant for pressing disc products |
| GB2498994B (en) | 2012-02-02 | 2014-03-19 | Trackwise Designs Ltd | Method of making a flexible circuit |
| AT520169B1 (en) * | 2012-10-05 | 2019-05-15 | Berndorf Band Gmbh | Double belt press |
| WO2014052999A1 (en) * | 2012-10-05 | 2014-04-10 | Berndorf Band Gmbh | Double belt press comprising at least two belts |
| RU2680505C1 (en) | 2013-11-22 | 2019-02-21 | Сайтек Индастриз Инк. | Method and system for impregnating fibres to form prepreg |
| US20240009948A1 (en) * | 2019-10-18 | 2024-01-11 | Välinge Innovation AB | Methods and arrangements for continuous manufacture of building panels |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2459295A (en) * | 1944-05-06 | 1949-01-18 | Per F Skoog | Apparatus for the flow manufacture of sheet material |
| US2981307A (en) * | 1957-06-24 | 1961-04-25 | Jr Neil Malarkey | Press machine |
| DE1262080B (en) * | 1966-05-06 | 1968-02-29 | Alfred Jakob Zwicky | Hydrostatically relieved radial roller bearing |
| US3808092A (en) * | 1972-03-01 | 1974-04-30 | Beloit Corp | Extended fibrous web press nip structure with contoured leading and trailing sills |
| DE2243465C3 (en) * | 1972-09-04 | 1979-11-22 | Kuesters, Eduard, 4150 Krefeld | Continuously working press |
| DE2421296A1 (en) * | 1974-05-02 | 1975-11-13 | Held Kg Adolf | METHOD AND DEVICE FOR MANUFACTURING CONTINUOUS LAMINATES |
| DE2421955A1 (en) * | 1974-05-07 | 1975-12-04 | Sandco Ltd | BELT PRESS, IN PARTICULAR HYDRAULIC DOUBLE BELT PRESS, FOR CONTINUOUSLY TREATED MATERIAL |
| DE7524844U (en) * | 1974-08-27 | 1976-01-02 | Konstruktiewerkhuizen De Mets N.V., Kachtem, Izegem (Belgien) | CONTINUOUS PRESS |
| DE2729263A1 (en) * | 1977-06-29 | 1979-01-04 | Siempelkamp Gmbh & Co | Chipboard and fibreboard mat press - with rolls in pressure chambers of endless steel belts |
| DE2735142C3 (en) * | 1977-08-04 | 1981-03-19 | Kurt 7218 Trossingen Held | Continuously working press |
| DE2737629C2 (en) * | 1977-08-20 | 1982-06-03 | Kurt 7218 Trossingen Held | Continuously working double belt press |
| AT356364B (en) * | 1977-12-13 | 1980-04-25 | Hymmen Kg Theodor | DEVICE FOR APPLYING A SURFACE PRESSING TO PROGRESSIVE WORKPIECES WITH AT LEAST ONE CONTINUOUS PRESS BELT |
| DE2907087C3 (en) * | 1979-02-23 | 1981-10-15 | Held, Kurt, 7218 Trossingen | Sliding surface seal on a continuous laminating machine |
| DE2937410A1 (en) * | 1979-09-15 | 1981-04-02 | Into Solymar Benalmadena Costa Malaga Kerttula | CONTINUOUSLY WORKING PLATE PRESS |
| DE3135031C2 (en) * | 1981-09-04 | 1983-07-21 | Held, Kurt, 7218 Trossingen | Double belt press for applying surface pressure |
-
1983
- 1983-02-11 EP EP83101324A patent/EP0087651B2/en not_active Expired - Lifetime
- 1983-02-16 US US06/466,885 patent/US4485733A/en not_active Expired - Fee Related
- 1983-02-24 JP JP58028665A patent/JPS58199698A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58199698A (en) | 1983-11-21 |
| US4485733A (en) | 1984-12-04 |
| JPH0229440B2 (en) | 1990-06-29 |
| EP0087651B1 (en) | 1988-04-27 |
| EP0087651A2 (en) | 1983-09-07 |
| EP0087651A3 (en) | 1984-11-28 |
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