EP0236905A2 - Apparatus for applying a surface impression to progressing work pieces - Google Patents
Apparatus for applying a surface impression to progressing work pieces Download PDFInfo
- Publication number
- EP0236905A2 EP0236905A2 EP87102941A EP87102941A EP0236905A2 EP 0236905 A2 EP0236905 A2 EP 0236905A2 EP 87102941 A EP87102941 A EP 87102941A EP 87102941 A EP87102941 A EP 87102941A EP 0236905 A2 EP0236905 A2 EP 0236905A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- rollers
- roller
- pressure plate
- press belt
- axle rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000002250 progressing effect Effects 0.000 title 1
- 238000005096 rolling process Methods 0.000 claims abstract description 17
- 238000003780 insertion Methods 0.000 claims abstract description 6
- 230000037431 insertion Effects 0.000 claims abstract description 6
- 230000000750 progressive effect Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000002985 plastic film Substances 0.000 claims description 3
- 239000002023 wood Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 238000000926 separation method 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
Definitions
- the invention relates to a device for applying surface pressure to progressive workpieces, such as wood-based panels, rubber, plastic sheets or the like, in which at least one circumferential press belt can be pressed against the workpiece and the working pressure can be applied to the working belt of the press belt by means of a pressure plate is and in the area of the pressure plate spaced from each other, in frictional connection with the pressure plate and the associated work of the press belt, rolling elements extending over the entire width of the press belt are provided, which are transported back on a closed path from the discharge end of the pressure plate to the insertion of the pressure plate will.
- at least one circumferential press belt can be pressed against the workpiece and the working pressure can be applied to the working belt of the press belt by means of a pressure plate is and in the area of the pressure plate spaced from each other, in frictional connection with the pressure plate and the associated work of the press belt, rolling elements extending over the entire width of the press belt are provided, which are transported back on a closed path from the discharge end of the pressure plate to the
- a double belt press of this type is known (DE-OS 31 17 778), in which roller bars are provided as rolling elements between the pressure plates and the press belts. These roller bars extend across the entire machine width, which can be two to three meters, and have a diameter of fourteen to sixteen millimeters. Such an unfavorable length / diameter ratio leads to one strong torsional stress on the individual roller bars or a slippage of the roller bars between the press belt, which is generally made of sheet steel, and the pressure plate and thus for premature wear.
- the diameter differences in the roller bar, or the like due to manufacturing tolerances, manufacturing inaccuracies, due to different thermal expansions. can arise, result in that when rolling a certain path in the pressing area different locations of the roller bars have different angular velocities, so that the roller bars are exposed to different torsional stresses distributed over their length due to their diameter tolerances.
- the invention has for its object to design a device of the type mentioned so that existing across the length of the rolling elements different diameter tolerances and occurring at the various locations of the pressure plates and the press belts in cooperation with the rolling elements not disadvantageous to the life and affect the correct operation of the rolling elements.
- each rolling element is designed as a roller strand having a number of immediately adjacent rollers, assembled to form a structural unit, in which the rollers are aligned with one another in the starting position and are rotatably mounted to the adjacent roller or rollers
- each rolling element is designed as a roller train having a row of rollers and assembled into a structural unit, in which the rollers are aligned with one another in the starting position and are rotatably mounted to the adjacent roller or rollers, springs being arranged at least between two rollers , which are supported on the opposite faces of two rollers.
- the independently rotatable rollers of a roller strand can be positively and / or non-positively connected to one another.
- the axes of rotation of the rolls form tangents to the main axis of the roll strand.
- the large number of rollers of each roller strand allows different angular and / or circumferential speeds of the rollers in the individual partial areas formed by the rollers, without the functionality of the roller strand being impaired during the operation of the device.
- the sleeves can be elastically deformed in cooperation with the pressure plates and the press belts, so that the roller strands in the individual sleeve areas also in the radial direction can work differently resiliently and an optimal adaptation to operating conditions that differ locally from one another over the length of the roller strand is possible.
- the spring characteristics of the roller strand and also the heat or cold transfer from the pressure plate to the press belt can be influenced by the fact that the sleeves are different in shell thickness and / or material.
- An annular gap between the axis rod and the sleeves or the rollers designed as a hollow cylinder is also advantageous for the heat flow or for the cold flow from the pressure plates to the press belts and the workpiece due to the insulating effect.
- the axis rod is only acted on to a small extent by the heat or cold flow. The desired operating temperature of the press belt is thus briefly reached when the printing plate is heated or cooled.
- roller strands devices can be assigned to the rotational control of the sleeves.
- the rotation control can be effected mechanically or electromagnetic. Blocking of a sleeve can be indicated at an end point of the axle rod and / or on the control panel or can be used to actuate an emergency stop.
- the blocking of a sleeve can be attributed to a permanent deformation of the sleeve which is caused by a foreign body which has entered the workpiece, for example by a screw, which acts on the sleeve via the press belt and deforms it beyond the elastic range.
- the double belt press shown in FIGS. 1 and 2 has endless press belts 1, which can be made from sheet steel and are guided over deflection rollers 2.
- the deflection rollers 2 are rotatably mounted in a press frame in which an upper and a lower pressure plate 3 are also arranged.
- roller strands 4 are provided at a distance from one another, via which the pressing forces generated by the printing plates 3 are transmitted to the working strand of the pressing belt 1.
- Workpieces 5 are guided through the double belt press between the working strands of the press belts 1 and subjected to a surface pressure.
- roller strands 4 which can be connected to one another by a flexible means without a connection to one another or at the ends, are guided in the press frame on closed tracks 6, which are indicated by dash-dotted lines in FIG. 2. The roller strands 4 are thus returned from the discharge end 7 to the introducer 8 of the printing plates 3.
- the roller train consists of rollers 9 and cylindrical end pieces 10.
- the rollers 9 are rotatable with one another and with the cylindrical end pieces 10 and are therefore positively connected to one another in such a way that the rollers have a pin 11 in the middle on one end face. which engages in a central recess 12 of the end face of the adjacent rollers.
- the end pieces 10 also have a central recess 12 or a pin 11 on the inner end face, so that the end pieces 10 are positively connected to one another in the same way as the rollers with the respectively adjacent roller.
- the end pieces can be provided with a push-through hole 13 for a steel cable or a steel strand, through which the roller strands can be connected to one another.
- the steel cable or the steel strand forms a flexible connecting means for the individual roller strands.
- the roller strand is formed by hollow cylinders 14 which lie flush with one another with their end faces, correspond in their outer diameter and are rotatably mounted on an axle rod 15 with little play.
- This axle rod 15 is biased and equipped at the ends with a package of disc springs 16, which is supported on the outer end face of the outer roller.
- the prestressing of the axle rod 15 and the attachment of the plate spring assemblies to the rod ends press the end faces of the hollow cylinders 14 together. Despite this adhesion, however, there is the possibility that the hollow cylinder will rotate relative to the neighboring rollers.
- the frictional connection between the individual rollers of a roller strand can also be achieved by other springs e.g. can be achieved by spiral springs or hydropneumatic springs.
- the rollers are designed as sleeves 17 with a small casing thickness and are rotatably mounted on an axle rod 18 with a relatively large annular gap.
- the annular gap between the sleeves 17 and the axle rod 18 is designed so that the sleeves are elastically deformable until they rest against the axle rod 18. This results in a series of elastic intermediate members between the rigid pressure plates 3 and the press belts 1, which can have a compensating effect over the entire length of the roller strands and over individual areas of each roller strand.
- the axle rod 19 is oval in cross section, as shown in FIG. 8.
- the sleeve 17 can be elastically deformed until it rests on the associated boundary surface of the axle rod 19.
- axle rod 20 in a triangular shape or to give it another geometric shape, e.g. a cuboid shape to give from the point of view that it limits the deformability of the sleeve after an elastic deformation of the sleeve surrounding it and thus the spring characteristic of the roller strand is changed.
- the axle rod in order to influence the overall spring characteristic of the roller strand, there is also the possibility of designing the axle rod as a tube, which as a round tube, as an oval tube 21, as shown in FIG. 10, or as a triangular tube or as a tube with a different cross section, e.g. a cuboid, can be formed.
- a wire, a stranded wire, a rope or another flexible means can also be used as the axis rod.
- the end edges of the rollers are designed such that they form an angle with the axis of rotation 22 which is a little less than 90 °. This angle can range from 85 to 89 °.
- the rolls of a roller train are designed as sleeves and the sleeves are assigned a resilient abutment at the ends of the axle rod or are arranged to be movable in the axial direction, the sleeves are movable in the vertical direction - in their elastic range - and in the axial direction, so that they not only absorb vertical loads resiliently, but also movements in the axial direction can be carried out in the transverse direction under the influence of thermal expansion of the press belts.
- roller strands 4 shown in FIGS. 12 and 13 are connected to one another approximately in their respective central region by tabs 27 which are articulated to one another.
- a plurality of tabs 27 in the form of a multi-link chain can each connect two roller strands 4 so that a deflection radius, when the roller strands 4 are transported back from the discharge end of the printing plate to its insertion, can be kept small in a favorable manner.
- the fastening of the roller strands 4 to each other in the middle area prevents different wear of the hollow cylinders 14 from occurring due to different loads, which can lead to difficulties in transporting the roller strands 4, in particular in the rear run, as can occur with the roller strands 4 being stored on both sides.
- FIG. 14 Another rolling element according to the invention is shown in FIG. 14.
- the rolling element is likewise designed as a roller train 4 which has a row of hollow cylinders 23 and is combined to form a structural unit.
- springs 25 are arranged, each of which is supported on the opposite end faces of two hollow cylinders 23.
- the springs 25, which in the present exemplary embodiment are designed as plate springs, ensure that the hollow cylinders 23 are cushioned in the axial direction, so that the addition of compressive stresses is prevented.
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- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Press Drives And Press Lines (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Refrigerator Housings (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Grinding Of Cylindrical And Plane Surfaces (AREA)
- Coating Apparatus (AREA)
- Coating By Spraying Or Casting (AREA)
- Soil Working Implements (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Die Vorrichtung weist mindestens ein umlaufendes Preßband (1) auf, wobei der Arbeitsdruck auf das Arbeitstrum des Preßbandes mittels einer Druckplatte (3) aufgebracht wird. Im Bereich der Druckplatte sind in Abstand voneinander angeordnete, sich über die gesamte Breite des Preßbandes (1) erstreckende Wälzkörper (4) vorgesehen, die auf einer geschlossenen Bahn vom Austragende der Druckplatte zum Einführende der Druckplatte zurücktransportiert werden. Diese Wälzkörper stehen mit der Druckplatte und dem zugeordneten Arbeitstrum des Preßbandes in Reibverbindung. Jeder Wälzkörper ist als Rollenstrang ausgebildet, der eine Reihe unmittelbar aneinandergrenzender Rollen aufweist. Die Rollen des Rollenstranges fluchten in der Ausgangslage miteinander und sind zu der oder den benachbarten Rollen drehbar gelagert. Sofern im Betrieb der Vorrichtung die Hauptachse des Rollenstranges eine bogenförmige Kontur annimmt, bilden die Drehachsen der Rollen Tangenten an die HauptachseThe device has at least one circumferential press belt (1), the working pressure being applied to the work strand of the press belt by means of a pressure plate (3). In the area of the pressure plate, rolling elements (4) are provided which are spaced apart from one another and extend over the entire width of the press belt (1) and are transported back on a closed path from the discharge end of the pressure plate to the insertion of the pressure plate. These rolling elements are in frictional connection with the pressure plate and the associated working strand of the press belt. Each rolling element is designed as a roller train which has a number of directly adjacent rollers. The rollers of the roller strand are aligned with one another in the starting position and are rotatably mounted to the adjacent roller or rollers. If the main axis of the roller train assumes an arcuate contour during operation of the device, the axes of rotation of the rollers form tangents to the main axis
Description
Vorrichtung zum Aufbringen einer Flächenpressung auf fortschreitende WerkstückeDevice for applying a surface pressure to progressive workpieces
Die Erfindung bezieht sich auf eine Vorrichtung zum Aufbringen einer Flächenpressung auf fortschreitende Werkstücke, wie Holzwerkstoffplatten, Gummi-, Kunststoffbahnen o.dgl., bei der mindestens ein umlaufendes Preßband an das Werkstück anpreßbar ist und der Arbeitsdruck auf das Arbeitstrum des Preßbandes mittels einer Druckplatte aufbringbar ist und im Bereich der Druckplatte in Abstand voneinander angeordnete, mit der Druckplatte und dem zugeordneten Arbeitstrum des Preßbandes in Reibverbindung stehende, sich über die gesamte Breite des Preßbandes erstreckende Wälzkörper vorgesehen sind, die auf einer geschlossenen Bahn vom Austragende der Druckplatte zum Einführende der Druckplatte zurücktransportiert werden.The invention relates to a device for applying surface pressure to progressive workpieces, such as wood-based panels, rubber, plastic sheets or the like, in which at least one circumferential press belt can be pressed against the workpiece and the working pressure can be applied to the working belt of the press belt by means of a pressure plate is and in the area of the pressure plate spaced from each other, in frictional connection with the pressure plate and the associated work of the press belt, rolling elements extending over the entire width of the press belt are provided, which are transported back on a closed path from the discharge end of the pressure plate to the insertion of the pressure plate will.
Es ist eine Doppelbandpresse dieser Art bekannt (DE-OS 31 17 778), bei der als Wälzkörper zwischen den Druckplatten und den Preßbändern Rollstangen vorgesehen werden. Diese Rollstangen erstrecken sich über die gesamte Maschinenbreite, die zwei bis drei Meter betragen kann und weisen einen Durchmesser von vierzehn bis sechzehn Millimetern auf. Ein derart ungünstiges Längen/Durchmesserverhältnis führt zu einer starken Torsionsbeanspruchung der einzelnen Rollstangen oder zu einem Schlupf der Rollstangen zwischen dem im allgemeinen aus einem Stahlblech hergestellten Preßband und der Druckplatte und damit zum vorzeitigen Verschleiß. Die Durchmesserunterschiede in der Rollstange, die aufgrund von Fertigungstoleranzen, Fertigungsungenauigkeiten, durch unterschiedliche Wärmedehnungen o.dgl. entstehen können, ergeben, daß beim Durchrollen eines bestimmten Weges im Preßbereich unterschiedliche Stellen der Rollstangen unterschiedliche Winkelgeschwindigkeiten aufweisen, so daß die Rollstangen bedingt durch ihre Durchmessertoleranzen über ihre Länge verteilt unterschiedlichen Torsionsspannungen ausgesetzt werden.A double belt press of this type is known (DE-OS 31 17 778), in which roller bars are provided as rolling elements between the pressure plates and the press belts. These roller bars extend across the entire machine width, which can be two to three meters, and have a diameter of fourteen to sixteen millimeters. Such an unfavorable length / diameter ratio leads to one strong torsional stress on the individual roller bars or a slippage of the roller bars between the press belt, which is generally made of sheet steel, and the pressure plate and thus for premature wear. The diameter differences in the roller bar, or the like due to manufacturing tolerances, manufacturing inaccuracies, due to different thermal expansions. can arise, result in that when rolling a certain path in the pressing area different locations of the roller bars have different angular velocities, so that the roller bars are exposed to different torsional stresses distributed over their length due to their diameter tolerances.
Um zu vermeiden, daß eine solche Rollstange bedingt durch diese Torsionsspannungen bricht, ist es bekannt, mit kleinen Durchmessertoleranzen zu arbeiten, die vorzugsweise unter 10 p liegen sollen. Die Herstellung von über zwei Meter langen Rollstangen mit einem Durchmesser von vierzehn bis sechzehn Millimetern, deren Durchmessertoleranzen unter 10 p liegen, ist sehr schwierig und teuer. Die starke Torsion der Rollstangen wird auch bei verhältnismäßig kleinen Fertigungstoleranzen nicht vermieden.In order to prevent such a roller rod from breaking due to these torsional stresses, it is known to work with small diameter tolerances, which should preferably be less than 10 p. The production of over two meter long roller bars with a diameter of fourteen to sixteen millimeters, whose diameter tolerances are less than 10 p, is very difficult and expensive. The strong torsion of the roller bars is not avoided even with relatively small manufacturing tolerances.
Es treten nicht nur Durchmessertoleranzen innerhalb der einzelnen Rollstange über ihre gesamte Länge auf, sondern auch weitere störende Maßabweichungen von Rollstange zu Rollstange, die insgesamt zu vielen Schwierigkeiten führen.There are not only diameter tolerances within the individual roller bar over its entire length, but also other disturbing dimensional deviations from roller bar to roller bar, which lead to many difficulties overall.
Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art so zu gestalten, daß über die Länge der Wälzkörper vorhandene unterschiedliche Durchmessertoleranzen und an den verschiedenen Stellen der Druckplatten und der Preßbänder im Zusammenwirken mit den Wälzkörpern auftretende unterschiedliche Reibungsverhältnisse sich nicht nachteilig auf die Lebensdauer und den einwandfreien Betrieb der Wälzkörper auswirken.The invention has for its object to design a device of the type mentioned so that existing across the length of the rolling elements different diameter tolerances and occurring at the various locations of the pressure plates and the press belts in cooperation with the rolling elements not disadvantageous to the life and affect the correct operation of the rolling elements.
Diese Aufgabe wird erfindungsgemäß zum einen dadurch gelöst, daß jeder Wälzkörper als ein eine Reihe unmittelbar aneinandergrenzender Rollen aufweisender, zu einer Baueinheit zusammengesetzter Rollenstrang ausgebildet ist, in dem die Rollen in der Ausgangslage miteinander fluchten und zu der oder den benachbarten Rollen drehbar gelagert sind, und zum anderen dadurch, daß jeder Wälzkörper als ein eine Reihe Rollen aufweisender, zu einer Baueinheit zpsammengesetzter Rollenstrang ausgebildet ist, in dem die Rollen in der Ausgangslage miteinander fluchten und zu der oder den benachbarten Rollen drehbar gelagert sind, wobei zumindest zwischen zwei Rollen Federn angeordnet sind, die sich jeweils an den gegenüberliegenden Stirnflächen zweier Rollen abstützen.This object is achieved, on the one hand, in that each rolling element is designed as a roller strand having a number of immediately adjacent rollers, assembled to form a structural unit, in which the rollers are aligned with one another in the starting position and are rotatably mounted to the adjacent roller or rollers, and on the other hand, in that each rolling element is designed as a roller train having a row of rollers and assembled into a structural unit, in which the rollers are aligned with one another in the starting position and are rotatably mounted to the adjacent roller or rollers, springs being arranged at least between two rollers , which are supported on the opposite faces of two rollers.
Die unabhängig voneinander drehbaren Rollen eines Rollenstrangs können form- und/oder kraftschlüssig miteinander verbunden sein.The independently rotatable rollers of a roller strand can be positively and / or non-positively connected to one another.
Sofern die Hauptachse eines Rollenstrangs unter den vorhandenen Betriebsbedingungen eine Bogenform einnimmt, bilden die Drehachsen der Rollen Tangenten an die Hauptachse des Rollenstranges.If the main axis of a roll strand assumes an arc shape under the existing operating conditions, the axes of rotation of the rolls form tangents to the main axis of the roll strand.
Die Vielzahl der Rollen eines jeden Rollenstranges läßt in den einzelnen, durch die Rollen gebildeten Teilbereichen unterschiedliche Winkel-und/oder Umfangsgeschwindigkeiten der Rollen zu, ohne daß die Funktionstüchtigkeit des Rollenstranges während des Betriebes der Vorrichtung beeinträchtigt wird. Durch die Verwendung dünnwandiger Hülsen als Rollen und die Wahl eines entsprechenden Spiels zwischen den Hülsen und einem durch die Hülsen geführten Achsstab können die Hülsen im Zusammenwirken mit den Druckplatten und den Preßbändern elastisch deformiert werden, so daß auch in radialer Richtung die Rollenstränge in den einzelnen Hülsenbereichen unterschiedlich federnd arbeiten können und eine optimale Anpassung an über die Länge des Rollenstranges örtlich voneinander abweichende Betriebsverhältnisse möglich ist.The large number of rollers of each roller strand allows different angular and / or circumferential speeds of the rollers in the individual partial areas formed by the rollers, without the functionality of the roller strand being impaired during the operation of the device. Through the use of thin-walled sleeves as rollers and the choice of a corresponding play between the sleeves and an axle rod guided through the sleeves, the sleeves can be elastically deformed in cooperation with the pressure plates and the press belts, so that the roller strands in the individual sleeve areas also in the radial direction can work differently resiliently and an optimal adaptation to operating conditions that differ locally from one another over the length of the roller strand is possible.
Die Federcharakteristik des Rollenstranges und auch die Wärme- oder Kälteübertragung von der Druckplatte auf das Preßband können dadurch beeinflußt werden, daß die Hülsen in Manteldicke und/oder Werkstoff unterschiedlich ausgebildet sind.The spring characteristics of the roller strand and also the heat or cold transfer from the pressure plate to the press belt can be influenced by the fact that the sleeves are different in shell thickness and / or material.
Ein Ringspalt zwischen dem Achsstab und den Hülsen oder den als Hohlzylinder ausgebildeten Rollen ist ferner für den Wärmestrom oder für den Kältestrom von den Druckplatten zu den Preßbändern und dem Werkstück aufgrund der isolierenden Wirkung vorteilhaft. Von dem Wärme-oder Kältetrom wird der Achsstab nur in geringem Maße beaufschlagt. Die angestrebte Betriebstemperatur des Preßbandes wird bei einer Aufheizung bzw. Abkühlung der Druckplatte somit kurzzeitig erreicht.An annular gap between the axis rod and the sleeves or the rollers designed as a hollow cylinder is also advantageous for the heat flow or for the cold flow from the pressure plates to the press belts and the workpiece due to the insulating effect. The axis rod is only acted on to a small extent by the heat or cold flow. The desired operating temperature of the press belt is thus briefly reached when the printing plate is heated or cooled.
In einem Rollenstrang liegen die Rollen ohne einen Trennspalt unmittelbar aneinander. Auch in diesem Bereich ist eine einwandfreie Kraftabtragung von der Druckplatte zum Preßband gegeben.In a roll strand, the rolls lie directly against one another without a separation gap. In this area, too, there is a perfect transfer of force from the pressure plate to the press belt.
Zur Erhöhung der Sicherheit und d2r Lebensdauer der Vorrichtung können den Rollensträngen Einrichtungen zur Drehkontrolle der HÜlsen zugeordnet werden. Die Drehkontrolle kann auf mechanischem oder elektromagnetischem Wege bewirkt werden. Das Blockieren einer Hülse kann an einem Endpunkt des Achsstabes und/oder am Schaltpult angezeigt werden oder zur Betätigung eines Notausschalters verwendet werden. Das Blockieren einer Hülse kann auf eine bleibende Deformation der Hülse zurückgehen, die durch einen in das Werkstück gelangten Fremkörper, z.B. durch eine Schraube, hervorgerufen wird, die über das Preßband auf die Hülse wirkt und sie über den Elastizitätsbereich hinaus verformt.To increase the safety and d 2 r life of the device the roller strands devices can be assigned to the rotational control of the sleeves. The rotation control can be effected mechanically or electromagnetic. Blocking of a sleeve can be indicated at an end point of the axle rod and / or on the control panel or can be used to actuate an emergency stop. The blocking of a sleeve can be attributed to a permanent deformation of the sleeve which is caused by a foreign body which has entered the workpiece, for example by a screw, which acts on the sleeve via the press belt and deforms it beyond the elastic range.
Weitere Merkmale der Erfindung ergeben sich aus den Unteransprüchen und der folgenden Beschreibung vorteilhafter, beispielsweiser Ausführungsformen.Further features of the invention result from the subclaims and the following description of advantageous exemplary embodiments.
Es zeigen:
- Fig. 1 den Bereich I einer Doppelbandpresse nach Fig. 2 in vergrößertem Maßstab,
- Fig. 2 die Doppelbandpresse im Vertikalschnitt und in schematischer Darstellung,
- Fig. 3 ein Ausführungsbeispiel für einen Rollenstrang, in dem die einzelnen Rollen formschlüssig und drehbar miteinander verbunden sind,
- Fig. 4 ein weiteres Ausführungsbeispiel für einen Rollenstrang im Vertikalschnitt,
- Fig. 5 einen Schnitt nach der Linie V-V in Fig. 4,
- Fig. 6 eine weitere Ausführungsform eines Rollenstranges im Vertikalschnitt,
- Fig. 7 einen Schnitt nach der Linie VII-VII in Fig. 6,
- Fig. 8,9 und 10 weitere Konstruktionen eines Rollenstranges im Querschnitt,
- Fig. 11 eine als Hohlzylinder ausgebildete Rolle im Längsschnitt,
- Fig. 12 ein Ausführungsbeispiel der Anordnung und Festlegung von Rollenträngen,
- Fig. 13 einen Querschnitt durch die Anordnung der Rollenstränge gemäß dem Schnitt XIII-XIII in Fig. 12,
- Fig. 14 einen Vertikalschnitt durch einen weiteren Rollenstrang der Erfindung.
- 1 shows the area I of a double belt press according to FIG. 2 on an enlarged scale,
- 2 the double belt press in vertical section and in a schematic representation,
- 3 shows an exemplary embodiment of a roller train in which the individual rollers are connected to one another in a form-fitting and rotatable manner,
- 4 shows a further exemplary embodiment of a roller strand in vertical section,
- 5 shows a section along the line VV in Fig. 4,
- 6 shows a further embodiment of a roller strand in vertical section,
- 7 shows a section along the line VII-VII in FIG. 6,
- 8,9 and 10 further constructions of a roller strand in cross section,
- 11 is a roll designed as a hollow cylinder in longitudinal section,
- 12 shows an exemplary embodiment of the arrangement and fixing of roll strands,
- 13 shows a cross section through the arrangement of the roller strands according to section XIII-XIII in FIG. 12,
- 14 shows a vertical section through a further roller strand of the invention.
Die in den Fig. 1 und 2 aufgezeigte Doppelbandpresse weist endlose Preßbänder 1 auf, die aus Stahlblechen gefertigt werden können und über Umlenkwalzen 2 geführt werden. Die Umlenkwalzen 2 sind in einem Pressengestell drehbar gelagert, in dem auch eine obere und eine untere Druckplatte 3 angeordnet ist.The double belt press shown in FIGS. 1 and 2 has
Zwischen den Druckplatten und dem zugeordneten Arbeitstrum der Preßbänder 1 sind in Abstand voneinander Rollenstränge 4 vorgesehen, über die die von den Druckplatten 3 erzeugten Preßkräfte auf das Arbeitstrum des Preßbandes 1 übertragen werden. Zwischen den Arbeitstrumen der Preßbänder 1 werden Werkstücke 5 durch die Doppelbandpresse geführt und mit einer Flächenpressung beaufschlagt.Between the printing plates and the associated working strand of the
Die Rollenstränge 4, die ohne eine Verbindung untereinander oder an den Enden miteinander durch ein flexibles Mittel verbunden sein können, werden in dem Pressengestell auf geschlossenen Bahnen 6 geführt, die in der Fig. 2 strichpunktiert angedeutet sind. Die Rollenstränge 4 werden somit von dem Austragende 7 zu dem Einführende 8 der Druckplatten 3 zurückgeführt.The roller strands 4, which can be connected to one another by a flexible means without a connection to one another or at the ends, are guided in the press frame on closed
Bei dem Ausführungsbeispiel nach der Fig. 3 besteht der-Rollenstrang aus Rollen 9 und zylinderförmigen Endstücken 10. Die Rollen 9 sind untereinander und mit den zylinderförmigen Endstücken 10 drehbar und dadurch formschlüssig miteinander verbunden, daß die Rollen an einer Stirnseite mittig einen Zapfen 11 aufweisen, der in eine mittige Ausnehmung 12 der Stirnseite der benachbarten Rollen eingreift.In the embodiment according to FIG. 3, the roller train consists of
Auch die Endstücke 10 weisen an der innenliegenden Stirnseite eine mittige Ausnehmung 12 bzw. einen Zapfen 11 auf, so daß die Endstücke 10 in gleicher Weise wie die Rollen untereinander mit der jeweils benachbarten Rolle formschlüssig verbunden sind. Die Endstücke können mit einer Durchsteckbohrung 13 für ein Stahlseil oder eine Stahllitze versehen sein, durch die die Rollenstränge untereinander verbunden werden können. Das Stahlseil oder die Stahllitze bildet ein flexibles Verbindungsmittel für die einzelnen Rollenstränge.The
Bei dem Ausführungsbeispiel nach den Fig. 4 und 5 wird der Rollenstrang durch Hohlzylinder 14 gebildet, die bündig mit ihren Stirnseiten aneinanderliegen, in ihrem Außendurchmesser übereinstimmen und mit geringem Spiel auf einem Achsstab 15 drehbar gelagert sind. Dieser Achsstab 15 ist vorgespannt und an den Enden mit einem Paket aus Tellerfedern 16 ausgerüstet, das sich jeweils an der außenliegenden Stirnseite der Außenrolle abstützt. Durch die Vorspannung des Achsstabes 15 und durch die Anbringung der Tellerfederpakete an den Stabenden werden die Stirnflächen der Hohlzylinder 14 kraftschlüssig aneinandergepreßt. Trotz dieses Kraftschlußes besteht jedoch die Möglichkeit, daß die Hohlzylinder sich relativ zu den Nachbarrollen drehen.In the exemplary embodiment according to FIGS. 4 and 5, the roller strand is formed by
Der Kraftschluß zwischen den einzelnen Rollen eines Rollenstranges kann auch durch andere Federn z.B. durch Spiralfedern oder hydropneumatische Federn erreicht werden.The frictional connection between the individual rollers of a roller strand can also be achieved by other springs e.g. can be achieved by spiral springs or hydropneumatic springs.
Es besteht auch die Möglichkeit, auf die Anordnung von Federn an den Enden des Achsstabes zu verzichten und die Rollen lediglich in axialer Richtung auf dem Achsstab beweglich anzuordnen. In diesem Fall werden die Rollen am Einführende der Druckplatte symmetrisch zur Mittellinie des zugeordneten Preßbandes und zur stirnseitigen Anlage zusammengeführt.It is also possible to dispense with the arrangement of springs at the ends of the axle rod and the rollers only in axi to arrange in the same direction on the axis rod. In this case, the rollers at the insertion of the pressure plate are brought together symmetrically to the center line of the associated press belt and to the front face.
Bei dem konstruktiven Aufbau des Rollenstranges nach den Fig. 6 und 7 sind die Rollen als Hülsen 17 mit geringer Manteldicke ausgeführt und auf einem Achsstab 18 mit einem relativ großen Ringspalt drehbar gelagert. Der Ringspalt zwischen den Hülsen 17 und dem Achsstab 18 ist so ausgelegt, daß die Hülsen bis zur Anlage am Achsstab 18 elastisch verformbar sind. Hierdurch ergibt sich zwischen den starren Druckplatten 3 und den Preßbändern 1 eine Reihe von elastischen Zwischengliedern, die über die gesamte Länge der Rollenstränge und über Einzelbereiche eines jeden Rollenstranges ausgleichend wirken können.6 and 7, the rollers are designed as
Sofern ein großes-vertikales Spiel zwischen der Hülse 17 und dem Achsstab angestrebt wird, jedoch in horizontaler Richtung ein relativ enges Führungsspiel vorhanden sein soll, wird der Achsstab 19 im Querschnitt oval ausgebildet, wie dies in der Fig. 8 aufgezeigt ist. Die Hülse 17 kann bis zur Anlage an der zugeordneten Begrenzungsfläche des Achsstabes 19 elastisch verformt werden.If a large-vertical play between the
Es besteht auch die Möglichkeit, wie dies in der Fig. 9 aufgezeigt ist, den Achsstab 20 dreieckförmig auszubilden oder ihm eine andere geometrische Form, z.B. eine quaderförmige Form, unter dem Gesichtspunkt zu geben, daß er nach einer elastischen Verformung der ihn umgebenden Hülse die Verformbarkeit der Hülse begrenzt und damit die Federcharakteristik des Rollenstrangs geändert wird.It is also possible, as shown in FIG. 9, to form the
Zur Beeinflussung der Gesamtfedercharakteristik des Rollenstrangs besteht auch die Möglichkeit, den Achsstab als Rohr auszubilden, das als Rundrohr, als ovales Rohr 21, wie in der Fig. 10 dargestellt, oder als dreieckförmiges Rohr oder als Rohr mit einem anderen Querschnitt, z.B. einem quaderförmigen, ausgebildet sein kann.In order to influence the overall spring characteristic of the roller strand, there is also the possibility of designing the axle rod as a tube, which as a round tube, as an
Als Achsstab kann auch ein Draht, eine Litze, ein Seil oder ein anderes flexibles Mittel verwendet werden.A wire, a stranded wire, a rope or another flexible means can also be used as the axis rod.
Es besteht auch die Möglichkeit, die Stirnkanten der Rollen zweier unmittelbar hintereinanderliegender Rohrstränge seitlich versetzt gegeneinander anzuordnen.There is also the possibility of arranging the end edges of the rolls of two pipe strings lying directly one behind the other laterally offset from one another.
Bei dem Ausführungsbeispiel nach der Fig. 11 sind zur Erhöhung der Gelenkigkeit zwischen zwei benachbarten Rollen die Stirnkanten der Rollen so ausgebildet, daß sie mit der Drehachse 22 einen Winkel bilden, der ein wenig kleiner ist als 90°. Dieser Winkel kann im Bereich zwischen 85 bis 89° liegen.In the embodiment according to FIG. 11, in order to increase the articulation between two adjacent rollers, the end edges of the rollers are designed such that they form an angle with the axis of
Sofern die Rollen eines Rollenstranges als Hülsen ausgeführt werden und die Hülsen an den Enden des Achsstabes ein federndes Widerlager zugeordnet wird oder in axialer Richtung beweglich angeordnet sind, erhalten die Hülsen eine Beweglichkeit in vertikaler Richtung - in ihrem Elastizitätsbereich - und in axialer Richtung, so daß von ihnen nicht nur vertikale Belastungen federnd aufgenommen, sondern auch Bewegungen in axialer Richtung unter dem Einfluß von Wärmedehnungen der Preßbänder in Querrichtung ausgeführt werden können.If the rolls of a roller train are designed as sleeves and the sleeves are assigned a resilient abutment at the ends of the axle rod or are arranged to be movable in the axial direction, the sleeves are movable in the vertical direction - in their elastic range - and in the axial direction, so that they not only absorb vertical loads resiliently, but also movements in the axial direction can be carried out in the transverse direction under the influence of thermal expansion of the press belts.
Durch die Beweglichkeit des Rollenstranges in axialer Richtung können auch Belastungen aus Bandverlauf schonend aufgenommen werden.Due to the mobility of the roller train in the axial direction, loads from the belt run can also be absorbed gently.
Die in den Fig. 12 und 13 dargestellten Rollenstränge 4 sind etwa in ihrem jeweiligen Mittenbereich durch gelenkig aneinander festgelegte Laschen 27 miteinander verbunden. Dabei können mehrere Laschen 27 in Form einer mehrgliedrigen Kette jeweils zwei Rollenstränge 4 miteinander verbinden, so daß ein Umlenkradius, dann wenn die Rollenstränge 4 vom Austragende der Druckplatte zu deren Einführende zurücktransportiert werden,in günstiger Weise klein gehalten werden kann.The roller strands 4 shown in FIGS. 12 and 13 are connected to one another approximately in their respective central region by
Durch die Befestigung der Rollenstränge 4 untereinander jeweils im Mittenbereich wird verhindert, daß durch unterschiedliche Belastungen unterschiedliche Abnutzungen der Hohlzylinder 14 auftreten, die zu Schwierigkeiten beim Transport der Rollenstränge 4 insbesondere im Rücktrum führen können, wie sie bei einer beidseitigen Endlagerung der Rollenstränge 4 durchaus auftreten.The fastening of the roller strands 4 to each other in the middle area prevents different wear of the
Ein weiterer erfindungsgemäßer Wälzkörper ist in der Fig. 14 dargestellt. Dabei ist ebenfalls der Wälzkörper als ein eine Reihe Hohlzylinder 23 aufweisender, zu einer Baueinheit zusammengesetzter Rollenstrang 4 ausgebildet. Zwischen den Hohlzylindern 23, die in der Ausgangslage miteinander fluchten und zu den benachbarten Rollen drehbar gelagert sind, sind Federn 25 angeordnet, die sich jeweils an den gegenüberliegenden Stirnflächen zweier Hohlzylinder 23 abstützen. Die Federn 25, die im vorliegenden Ausführungsbeispiel als Tellerfedern ausgebildet sind, sorgen für eine Abfederung der Hohlzylinder 23 in axialer Richtung, so daß eine Addition von Druckspannungen verhindert wird.Another rolling element according to the invention is shown in FIG. 14. The rolling element is likewise designed as a roller train 4 which has a row of
Claims (26)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87102941T ATE62178T1 (en) | 1986-03-14 | 1987-03-02 | DEVICE FOR APPLYING A SURFACE PRESSURE TO PROGRESSIVE WORKPIECES. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3608487 | 1986-03-14 | ||
DE19863608487 DE3608487A1 (en) | 1986-03-14 | 1986-03-14 | DEVICE FOR APPLYING A SURFACE PRESS TO PROGRESSIVE WORKPIECES |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0236905A2 true EP0236905A2 (en) | 1987-09-16 |
EP0236905A3 EP0236905A3 (en) | 1989-04-05 |
EP0236905B1 EP0236905B1 (en) | 1991-04-03 |
Family
ID=6296315
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87102941A Expired - Lifetime EP0236905B1 (en) | 1986-03-14 | 1987-03-02 | Apparatus for applying a surface impression to progressing work pieces |
Country Status (9)
Country | Link |
---|---|
US (1) | US4807525A (en) |
EP (1) | EP0236905B1 (en) |
JP (1) | JPS62248601A (en) |
AT (1) | ATE62178T1 (en) |
DE (2) | DE3608487A1 (en) |
ES (1) | ES2020954B3 (en) |
FI (1) | FI86040C (en) |
IN (1) | IN169321B (en) |
SU (1) | SU1582981A3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5336077A (en) * | 1991-12-18 | 1994-08-09 | G. Siempelkamp Gmbh & Co. | Roller for continuous belt press |
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DE68909382T2 (en) * | 1988-12-21 | 1994-04-14 | Nippon Oil Co Ltd | Continuous process for the production of high-strength and highly elastic polyolefin materials. |
DE3913991C2 (en) * | 1989-04-27 | 1997-01-16 | Dieffenbacher Gmbh Maschf | Continuously working press |
AU6595690A (en) * | 1989-11-09 | 1991-05-16 | Mcgrath Industries Limited | Improvements in or relating to apparatus to facilitate movement of an object over a surface |
CA2036755C (en) * | 1990-03-30 | 1998-06-02 | Friedrich Bernd Bielfeldt | Continuously-operating press |
DE29719897U1 (en) * | 1997-11-08 | 1999-03-18 | Eduard Küsters Maschinenfabrik GmbH & Co. KG, 47805 Krefeld | Roller for a roller chain |
DE19844166A1 (en) * | 1998-09-27 | 2000-03-30 | Dieffenbacher Gmbh Maschf | Continuous press for particle-, plastic- and composite panels employs chain of rollers with cores of lower thermal conductivity and -capacity than their casings, to improve product and productivity through control of thermal diffusivity |
JP4425000B2 (en) * | 2004-01-06 | 2010-03-03 | 株式会社ブリヂストン | Rubber member conveying device and rubber member supply system having the same |
CH701686A1 (en) * | 2009-08-24 | 2011-02-28 | Wrh Walter Reist Holding Ag | Supporting device for conveying heavy loads. |
US9017501B2 (en) | 2011-02-17 | 2015-04-28 | Baker Hughes Incorporated | Polymeric component and method of making |
US8684075B2 (en) | 2011-02-17 | 2014-04-01 | Baker Hughes Incorporated | Sand screen, expandable screen and method of making |
US8664318B2 (en) | 2011-02-17 | 2014-03-04 | Baker Hughes Incorporated | Conformable screen, shape memory structure and method of making the same |
US9044914B2 (en) | 2011-06-28 | 2015-06-02 | Baker Hughes Incorporated | Permeable material compacting method and apparatus |
US8720590B2 (en) * | 2011-08-05 | 2014-05-13 | Baker Hughes Incorporated | Permeable material compacting method and apparatus |
US8721958B2 (en) | 2011-08-05 | 2014-05-13 | Baker Hughes Incorporated | Permeable material compacting method and apparatus |
DE202011105077U1 (en) * | 2011-08-27 | 2012-11-28 | Hans Hundegger | Belt or chain arrangement and woodworking plant with such a belt or chain arrangement |
JP6334795B1 (en) * | 2017-09-05 | 2018-05-30 | プロセスシステム株式会社 | Double belt press device and induction heating press module |
DE102018130019B4 (en) | 2018-11-27 | 2021-02-25 | Azl Aachen Gmbh | Device for pressing processing of flat material |
CN109894511B (en) * | 2019-04-18 | 2021-08-20 | 青岛明珠钢结构有限公司 | A unloader for H shaped steel |
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DE3534996C1 (en) * | 1985-10-01 | 1986-12-04 | G. Siempelkamp Gmbh & Co, 4150 Krefeld | Continuously operating coating press |
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1986
- 1986-03-14 DE DE19863608487 patent/DE3608487A1/en active Granted
-
1987
- 1987-03-02 DE DE8787102941T patent/DE3768988D1/en not_active Expired - Lifetime
- 1987-03-02 ES ES87102941T patent/ES2020954B3/en not_active Expired - Lifetime
- 1987-03-02 AT AT87102941T patent/ATE62178T1/en not_active IP Right Cessation
- 1987-03-02 EP EP87102941A patent/EP0236905B1/en not_active Expired - Lifetime
- 1987-03-12 US US07/024,818 patent/US4807525A/en not_active Expired - Lifetime
- 1987-03-13 IN IN180/MAS/87A patent/IN169321B/en unknown
- 1987-03-13 SU SU874202135A patent/SU1582981A3/en active
- 1987-03-13 JP JP62056963A patent/JPS62248601A/en active Granted
- 1987-03-13 FI FI871118A patent/FI86040C/en not_active IP Right Cessation
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Also Published As
Publication number | Publication date |
---|---|
EP0236905A3 (en) | 1989-04-05 |
FI871118A (en) | 1987-09-15 |
DE3608487A1 (en) | 1987-09-17 |
FI871118A0 (en) | 1987-03-13 |
DE3608487C2 (en) | 1993-01-21 |
EP0236905B1 (en) | 1991-04-03 |
ATE62178T1 (en) | 1991-04-15 |
US4807525A (en) | 1989-02-28 |
FI86040B (en) | 1992-03-31 |
IN169321B (en) | 1991-09-28 |
JPH0336637B2 (en) | 1991-06-03 |
FI86040C (en) | 1992-07-10 |
DE3768988D1 (en) | 1991-05-08 |
ES2020954B3 (en) | 1991-10-16 |
SU1582981A3 (en) | 1990-07-30 |
JPS62248601A (en) | 1987-10-29 |
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