EP2527135B1 - Cycle press - Google Patents
Cycle press Download PDFInfo
- Publication number
- EP2527135B1 EP2527135B1 EP20110167932 EP11167932A EP2527135B1 EP 2527135 B1 EP2527135 B1 EP 2527135B1 EP 20110167932 EP20110167932 EP 20110167932 EP 11167932 A EP11167932 A EP 11167932A EP 2527135 B1 EP2527135 B1 EP 2527135B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- press
- cylinder
- piston
- plate
- plates
- 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.)
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- 238000003825 pressing Methods 0.000 claims description 27
- 238000009413 insulation Methods 0.000 claims description 15
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000002023 wood Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 description 14
- 230000006835 compression Effects 0.000 description 11
- 238000007906 compression Methods 0.000 description 11
- 238000012423 maintenance Methods 0.000 description 10
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000010835 comparative analysis Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000011094 fiberboard Substances 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000123 paper Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B15/00—Details of, or accessories for, presses; Auxiliary measures in connection with pressing
- B30B15/04—Frames; Guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
- B27N3/20—Moulding or pressing characterised by using platen-presses
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/32—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure
- B30B1/34—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by plungers under fluid pressure involving a plurality of plungers acting on the platen
Definitions
- the invention relates to a cycle press, in particular short-cycle press, for the production and / or coating of plate-shaped materials, in particular wood-based panels, with a press frame with a plurality of press frame lined press frame and with an upper press plate and a lower press plate, wherein the upper press plate or the lower press plate is acted upon with pressing cylinders, which are supported on the press frame.
- the press plates are designed as heatable press plates and consequently hot plates.
- the press cylinders which are also referred to as cylinder piston arrangements, are generally arranged in a plurality of rows arranged one behind the other in the press longitudinal direction, each row having a plurality of cylinder piston arrangements.
- the pressing cylinders are preferably designed as hydraulic cylinders.
- Such a press also referred to as a one-floor press, operates in cycles, i. the starting material is fed cyclically into the press (between upper press plate and lower press plate) and the press opens and closes intermittently.
- the press frame forming press frame are z. B. made of sheet steel blanks in window construction and consequently formed with frame windows.
- Cycle presses of the type described above are known in various embodiments (cf., eg DE 199 37 694 B4 or DE 101 22 967 A1 ). So describes z. B. DE 101 22 967 A1 a cycle press, in particular short-cycle press, for the production of particleboard, fiberboard, laminate plates or the like pressed product plates, in which the pressing cylinder individually and / or in predetermined groups are acted upon by a pressure medium, wherein the pressurization of the pressing cylinder with a for the flatness the upper pressure plate required pressing pressure distribution in dependence on at least the platen temperature, the press cycle and the respective pressed material takes place in a preprogrammed manner.
- the press has eleven in the press longitudinal direction successively arranged rows of pressing cylinders, each row of turn four pressing cylinders composed.
- a constant problem is the inspection or maintenance of the individual components of the cycle press. This applies in particular to the press cylinder. For example, for maintenance work on the cylinder interior, it was generally necessary to completely remove the press cylinders from the press. Since such measures are relatively complex and can lead to a long standstill of the entire press, alternative solutions have been proposed in which the piston can be removed from the cylinder housing with built-in cylinder (see. DE 10 2004 033 484 B3 ).
- the invention has for its object to provide a cycle press, in particular short-cycle press for the production and / or coating of plate-shaped materials, in particular wood-based panels, which is constructed easy to install and maintain even with a design for high compression pressures.
- a plurality of cassette holders are connected to one another via longitudinal connections to form a multiple cassette frame, which can be pulled out of the press end or inserted into the latter.
- the invention is based in this first aspect of the invention on the recognition that the replacement of the insulation panels, which form wearing parts, can be considerably simplified, so that the maintenance can be minimized and thus costs can be reduced.
- Particularly advantageous is the fact that after the separation of the piston from the heating plate can remove a plurality of insulation plates together and bring back, with the help of the described cassette frame.
- the cassette frame can be pulled out of the press after releasing the connections on the face side and also be introduced into the press again on the face side. This considerably simplifies the replacement of the insulation panels, even taking into account the potentially very small free installation space.
- This has the advantage that the press can be designed overall for high pressing forces. In such a case, for example, working with pressing cylinders with large weight and large diameter and high wall thickness. The size of the press cylinder naturally influences the free space.
- the optimization of the insulation panel replacement according to the invention makes it possible to create a total of a press that can be designed for high compression pressures.
- the press cylinders are - as explained - arranged in a plurality of rows arranged in the press longitudinal direction one behind the other, so that these rows themselves extend transversely to the press longitudinal direction.
- the individual cylinders arranged in succession press cylinders thus form the "columns" of the press cylinder matrix.
- the heating plate is fastened to the piston with fastening plates arranged between two adjacent cylinders, which fastening grooves the piston or a piston extension engage positively and are clamped against the press plate.
- the upper press plate is fastened to the piston with these fixing plates.
- the attachment of the piston is therefore no longer in a complex manner by means of intermediate fasteners, but the mounting plates are arranged between two adjacent cylinders and they are otherwise the simultaneous attachment of several pistons, namely at least two adjacent pistons of a row of cylinders. This also allows easy assembly and disassembly, even if the cylinders and their pistons are particularly large to achieve very high compression pressures.
- the mounting plates or strips are preferably by means of clamping elements, for. B. clamping screws or clamping bolts are not screwed directly into the heating plate, but with the interposition of spacers, these spacers are in turn secured with fastening screws to the heating plates.
- clamping screws or clamping bolts are not screwed directly into the heating plate, but with the interposition of spacers, these spacers are in turn secured with fastening screws to the heating plates.
- the invention proposes that one or more centering plates are attached to the upper or lower press plate, which engage in the longitudinal direction and / or transverse direction of the positioning of the press plate in grooves of the cylinder piston.
- the invention is based on the recognition that with the help of such centering optimal positioning and guidance of the press plates can be realized both in the longitudinal direction and in the transverse direction. This succeeds in a structurally very simple way.
- the press can work in this way with high precision. This is particularly advantageous if high quality with the press Decors, z. As in the production of laminate panels, are applied and at the same time a "congruent" embossment is introduced.
- a locking brackets are attached, which together with a groove in the cylinder piston form a locking receptacle, in which for securing the piston in a retracted position, a locking means, for. B. a Arret istsstange is inserted.
- the invention is based on the fact that in the course of maintenance and installation work, it is regularly necessary to fix the pistons in the retracted position on the cylinder housing. So far, it has been customary to install in individual cases separate brackets or clamps. In particular, when the press is to be designed for high compression pressures and thereby reduces the available free space, the known measures are expensive.
- the locking brackets fastened to the cylinder housings can now remain permanently mounted on the cylinder housing since they themselves do not influence or obstruct the movement of the piston. Because the brackets themselves do not engage in the grooves in the piston.
- the positive connection between the clamp and piston is realized by an additional Arret michsstange, which engages on the one hand in the groove of the piston and on the other hand in the Arret michsklammer or is engaged by the clip and thus produces the positive connection. It is therefore no longer necessary for the purpose of locking to mount the brackets themselves, but it only has the locking means, for. B. the Arret réellesstange or insertion rod are inserted.
- the locking clips preferably have a locking leg, which engages under the rod in the locked state of the piston. This leg is dimensioned so that it does not hinder the movement of the piston.
- the cylinders are placed in the frame windows under the press frame. It is therefore within the scope of the invention that the cylinders themselves do not engage with their cylinder housings in the space between the press frame. This embodiment is particularly useful when the cylinders are designed for very high pressing forces.
- the invention relates to a press which is designed for a specific pressure of more than 600 N / cm 2, more preferably 700 N / cm 2 and more.
- the press has at least two hydraulic tanks, which are not centered on the press frame, but are preferably arranged in lateral areas of the press and thus laterally offset from the vertical median plane of the press, more preferably laterally offset to the press cylinders.
- Such an embodiment has the advantage over a conventional embodiment with a central hydraulic tank that the space above the cylinder is freely accessible, so that the pressing cylinder can be removed altogether upwards out of the press frame. This can, for example, with already existing Hoists, z. B. a hall crane or overhead crane done.
- a special lifting device is placed on the press frame or mounted in the press.
- a construction is realized in which the press cylinder can be easily completely removed from the press, preferably by the press cylinder after loosening the fixation and after loosening the attachment of the respective heating plate upwards removed from the press frame become.
- the hydraulic tanks are not particularly preferably placed directly on the press frame, but on connecting bolts or rods which connect the press frame with each other.
- the individual press frame are connected to each other with extending in the press longitudinal direction connecting bolt or rods.
- the hydraulic tanks can be placed with suitable tank carriers, so that a relief of the individual frame plates guaranteed and damage is avoided.
- the press is preferably designed as a multi-piston press.
- z. B. ten rows of press cylinders or more can be arranged one behind the other.
- Such a multi-piston press with 40 press cylinders or more allows a variable adjustment of the press to different to be pressed plate formats.
- the many press cylinders can also be controlled differently. So, for example be implemented independently adjustable hydraulic systems or pressing systems, z. B. six independently adjustable pressing systems or more.
- a short-cycle press is created, which is designed for particularly high compression pressures of 700 N / cm 2 and more.
- the press is especially for the short-cycle coating of wood-based panels with z. B. decorative papers suitable.
- This short-cycle coating is used, for example, in the production of laminate flooring, wall panels, furniture or doors.
- the press according to the invention is designed as an upper-piston press, d. H. the pressing cylinders work on the upper heating plate, while the lower heating plate (stationary) rests on the lower crossbars of the press frame.
- the press cylinders are usually designed as a single-acting hydraulic cylinder, which can be applied only in one direction pressing forces. To open the press additional return cylinders are usually provided. Basically, however, it is also within the scope of the invention, the press cylinder as a double-acting hydraulic cylinder, z. B. differential cylinder, form, so that then possibly can be dispensed with retraction cylinder.
- the invention also includes sub-piston presses, in which the pressing cylinder work on the lower press plate.
- the figures show a short-cycle press as Amsterdamtagenpresse for the production or for the coating of wood-based panels.
- This short-cycle press has in its basic structure a press frame 1, which is composed of several in the press longitudinal direction R successively lined press frame 2.
- the press longitudinal direction R corresponds to the working direction and consequently the loading direction and emptying direction of the press.
- the press frame 2 are made in the embodiment of sheet steel blanks, in "window construction", ie, the individual press frame 2 each have a frame window 3, which above from the upper cross member 2a and below is limited by the lower cross member 2b.
- the individual press frame 2 are connected to each other with connecting rods 4, which are oriented in the press longitudinal direction. Between the frame 2 spacer tubes are attached to the connecting rods 4.
- the press has an upper press plate 5 and a lower press plate 6. These press plates 5, 6 are designed as heated press plates and consequently heating plates.
- the press is equipped in a plurality of press cylinders 7, which are formed in the embodiment as a single-acting hydraulic cylinder 7. Each press cylinder 7 has, on the one hand, a cylinder housing 8 and, on the other hand, a cylinder piston 9.
- the press is designed as an upper piston press, ie the pressing cylinder 7 are connected with its cylinder piston 9 to the (movable) upper press plate 5, while the lower press plate 6 substantially stationary on the lower crossbars 2b of the press frame 2 rests.
- the press cylinders 7 are set in the frame window 3 and placed under the upper cross members 2a of the press frame 2, ie they are based in the course of application of the pressing force with their upper front ends on the upper cross members 2a of the press frame from (see. Fig. 3 to 5 ).
- the show Fig. 3 to 5 in that each press cylinder 7 or its cylinder housing 8 is supported on two adjacent press frames.
- the pressing cylinder 7 or its cylinder housing 8 in at least one direction to a diameter which is greater than the inner distance of two adjacent press frame. This results, for example, from Fig. 4 , By the way it is off Fig.
- the cylinder housings are partially “flattened", ie the diameter in one direction is smaller than the diameter in the other direction (perpendicular thereto) and in particular the diameter in one direction is less than the inner distance between two adjacent press frames, so that the cylinders - starting from the Functional position in Fig. 4 - Can be rotated by 90 ° for the purpose of removal. This will be discussed in more detail below.
- FIGS. 3 to 5 show, moreover, that the pressing cylinder 7 are fixed with frame bolts 10 to the press frame 2, wherein the frame pins 10 engage in each aligned recesses 11 of the press frame.
- the press cylinder 7 or its cylinder housing 8 are connected by means of clamping screws 12 with the frame bolt 10, so that the press cylinder 7 by means of the clamping screws 12 and the frame bolt 10 are biased against the press frame 2.
- a comparative analysis of the Fig. 3 to 5 shows, moreover, that each press cylinder 7 is fixed with two frame bolts 10, wherein each frame bolt 10 in turn two clamping screws 12 are assigned.
- the recesses 11 are formed in the embodiment as an oval or slot-like recesses, which have a greater extent in the vertical direction than in the horizontal direction.
- the frame bolts 10 are provided at the end with diameter reductions 13, which are formed in the embodiment as chamfers.
- This embodiment with the chamfers 13 on the one hand and the slot-like recesses 11 on the other hand has the consequence that the frame bolts 10 can be removed between the respective press frame 2 by suitable tilting and / or twisting.
- the system can be easily disassembled, so that the press cylinder can be removed for maintenance purposes up between the press frame 2 from the press.
- the frame bolts 10 are formed in the embodiment as a solid bolt.
- the length of the bolt corresponds to the outer distance between two adjacent press frame.
- the frame bolts 10 are bolted to the clamping screws 12 with the interposition of Kraftverteilplatten 14. These ensure a perfect support surface of the nuts or clamping screws on the frame bolt 10, which in the exemplary embodiment have a round cross-section.
- Fig. 1 shows Fig. 1 in that two hydraulic tanks 15 are provided, which are arranged above the press frame 1, not centrally above the press but laterally offset and consequently in the lateral areas.
- the hydraulic tank 15 are therefore not immediately above the pressing cylinders 7, but arranged laterally offset from the pressing cylinders.
- the hydraulic tanks 15 are not placed directly on the press frame 2, but rather that the hydraulic tanks 15 are mounted with tank supports 16 on the connecting rods 4 or fastened thereto.
- FIG. 6 to 8 A comparative analysis of the Fig. 6 to 8 shows that the upper press plate 5 is fixed to the piston 9 with mounting plates 17 which engage positively in fastening grooves 18 of the piston or an end-side piston extension.
- the mounting plates 17 are by means of clamping screws 19 with the interposition of spring elements 20, z. B. plate spring assemblies, clamped against the press plate 5.
- the attachment of the piston 9 is therefore no longer in a complex manner by means of intermediate fasteners, but the mounting plates 17 are arranged between adjacent cylinders and they are otherwise the simultaneous attachment of several pistons 9, namely two adjacent pistons. This allows easy assembly and disassembly, even if the cylinder 7 and its pistons are particularly large to achieve very high compression pressures.
- a plurality of mounting plates 17 for the common fastening of the press plate 5 at several press longitudinally successively arranged piston 9 are combined to form a common fastening strip 17 ', said this fastening strip 17' in the press longitudinal direction R along several Press cylinder 7 extends.
- Fig. 7 shows that a fastening strip 17 'extends in the press longitudinal direction over five rows of cylinders, so that a total of ten pistons are fastened to the press plate 5 with a fastening strip 17'.
- Fig. 6 and 7 show, moreover, that not only the Schuplattenbefest Trent, but also the attachment and replacement of the piston insulation is optimized in the press according to the invention.
- the insulation plates 23 are inserted into cassette receptacles 24, said cassette receptacles 24 are in turn connected via longitudinal connections 25 to form a multi-cassette frame 24, 25.
- the insulation is therefore not attached to the end face of the piston 9, but they are placed in the course of assembly in a suitable manner on top of the upper press plate 5 and then braced in the course of attachment of the piston 9 on the press plate 5 between the piston end and press plate.
- FIG. 6 and 7 show beyond that in addition to the mounting plates 17 and the insulation plates 23 also centering plates 26 are provided, which also engage in fastening grooves 18. These centering plates 26 are also fastened with fastening screws 27 on the press plates 5. These centering plates 26 serve for optimum positioning of the press plate 5 both in the longitudinal direction and in the transverse direction. This results in particular from Fig. 7 , because there it can be seen that in each case two centering plates 26 are provided for the positioning in the transverse direction on the one hand and for the positioning in the longitudinal direction on the other hand.
- FIG. 6 shows Fig. 6 in that locking cylinders 28 are fastened to the cylinder housings 8 of the press cylinders 7 on the underside or end.
- These locking brackets 28 serve to lock the piston 9 in the retracted position or in another position. This lock is required in order to expand the entire cylinder, ie cylinder housing 8 together with cylinder piston 9 after releasing the hot plate from the press without the piston falling down out of the cylinder housing.
- Particularly advantageous is the fact that the locking brackets 28 can remain "permanently" mounted on the cylinder housing.
- the press is additionally equipped with retraction cylinders 31.
- retraction cylinders 31 For the pressing cylinder 7 itself are formed in the embodiment as a single-acting cylinder, with which only pressing forces are applied. To open the press then the return cylinder 31 are used.
- the Fig. 9a . b and c show, moreover, that with this press, as a multi-piston press with z. B. forty press cylinders is equipped to produce or coat wood panels of various formats. Even with very different plate formats can be easily pressed by suitable selection of the press cylinder, the plates. For this purpose it may be expedient to group the press cylinders into a plurality of press cylinder groups and consequently into different press systems, so that individual groups can be controlled separately and independently of one another. This is in the Fig. 9a . b and c indicated by the letters a to f, which each represent different pressing systems.
- heating plates of very high quality and very high surface quality are preferably used.
- the heating plates can have a carrying percentage of 97% to 100%.
- the press cylinders are torque capable attached to the press frame. The control of the press cylinder via proportional valves.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
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- Press Drives And Press Lines (AREA)
Description
Die Erfindung betrifft eine Taktpresse, insbesondere Kurztaktpresse, für die Herstellung und/oder Beschichtung von plattenförmigen Werkstoffen, insbesondere Holzwerkstoffplatten, mit einem Pressengestell mit mehreren in Pressenlängsrichtung gereihten Pressenrahmen und mit einer oberen Pressenplatte und einer unteren Pressenplatte, wobei die obere Pressenplatte oder die unteren Pressenplatte mit Presszylindern beaufschlagt ist, welche an dem Pressenrahmen abgestützt sind. - Die Pressenplatten sind als beheizbare Pressenplatten und folglich Heizplatten ausgebildet. Die Presszylinder, welche auch als Zylinderkolbenanordnungen bezeichnet werden, sind in der Regel in mehreren in Pressenlängsrichtung hintereinander angeordneten Reihen angeordnet, wobei jede Reihe eine Mehrzahl von Zylinderkolbenanordnungen aufweist. Die Presszylinder sind bevorzugt als Hydraulikzylinder ausgebildet. Eine solche Presse, die auch als Einetagenpresse bezeichnet wird, arbeitet taktweise, d.h. das Ausgangsmaterial wird taktweise in die Presse (zwischen oberer Pressenplatte und unterer Pressenplatte) eingeführt und die Presse öffnet und schließt taktweise. Die das Pressengestell bildenden Pressenrahmen sind z. B. aus Stahlblechzuschnitten in Fensterbauweise und folglich mit Rahmenfenstern ausgebildet.The invention relates to a cycle press, in particular short-cycle press, for the production and / or coating of plate-shaped materials, in particular wood-based panels, with a press frame with a plurality of press frame lined press frame and with an upper press plate and a lower press plate, wherein the upper press plate or the lower press plate is acted upon with pressing cylinders, which are supported on the press frame. - The press plates are designed as heatable press plates and consequently hot plates. The press cylinders, which are also referred to as cylinder piston arrangements, are generally arranged in a plurality of rows arranged one behind the other in the press longitudinal direction, each row having a plurality of cylinder piston arrangements. The pressing cylinders are preferably designed as hydraulic cylinders. Such a press, also referred to as a one-floor press, operates in cycles, i. the starting material is fed cyclically into the press (between upper press plate and lower press plate) and the press opens and closes intermittently. The press frame forming press frame are z. B. made of sheet steel blanks in window construction and consequently formed with frame windows.
Taktpressen der eingangs beschriebenen Art sind in verschiedensten Ausführungsformen bekannt (vgl. z.B.
Ein ständiges Problem bereitet die Inspektion bzw. Wartung der einzelnen Komponenten der Taktpresse. Dieses gilt insbesondere für die Presszylinder. So war es beispielsweise für Wartungsarbeiten am Zylinderinnenraum in der Regel erforderlich, die Presszylinder vollständig aus der Presse auszubauen. Da derartige Maßnahmen verhältnismäßig aufwändig sind und zu einem langen Stillstand der gesamten Presse führen können, wurden Alternativlösungen vorgeschlagen, bei welchen die Kolben bei eingebautem Zylinder aus dem Zylindergehäuse ausgebaut werden können (vgl.
Aus der
Schließlich beschreibt die
Die aus der Praxis bekannten Taktpressen haben sich grundsätzlich bewährt. Sie sind jedoch weiterentwicklungsfähig. Es besteht insbesondere das Problem, dass die Konstruktion bei der Auslegung der Presse für besonders hohe Pressdrücke so aufwändig wird, dass Reparatur- und Wartungsarbeiten nur noch mit enormem Aufwand möglich sind. - Hier setzt die Erfindung ein.The known from practice tact presses have basically proven. They are, however, capable of further development. In particular, there is the problem that the construction in the design of the press for particularly high compression pressures becomes so complex that repair and maintenance work is possible only with enormous effort. - This is where the invention starts.
Der Erfindung liegt die Aufgabe zugrunde, eine Taktpresse, insbesondere Kurztaktpresse für die Herstellung und/oder Beschichtung von plattenförmigen Werkstoffen, insbesondere Holzwerkstoffplatten, zu schaffen, welche auch bei einer Auslegung für hohe Pressdrücke montage- und wartungsfreundlich aufgebaut ist.The invention has for its object to provide a cycle press, in particular short-cycle press for the production and / or coating of plate-shaped materials, in particular wood-based panels, which is constructed easy to install and maintain even with a design for high compression pressures.
Diese Aufgabe wird durch eine gattungsgemäße Taktpresse der eingangs beschriebenen Art mit den Merkmalen der Ansprüche 1, 2 oder 5 gelöst.This object is achieved by a generic clock press of the type described above with the features of
Nach einem ersten Aspekt der Erfindung sind mehrere Kassettenaufnahmen über Längsverbindungen unter Bildung eines Mehrfachkassettenrahmens miteinander verbunden, welcher stirnseitig aus der Presse herausziehbar bzw. in diese einführbar ist.According to a first aspect of the invention, a plurality of cassette holders are connected to one another via longitudinal connections to form a multiple cassette frame, which can be pulled out of the press end or inserted into the latter.
Die Erfindung geht bei diesem ersten Aspekt der Erfindung von der Erkenntnis aus, dass sich der Austausch der Isolationsplatten, welche Verschleißteile bilden, erheblich vereinfachen lässt, so dass der Wartungsaufwand minimiert und damit Kosten gesenkt werden können. Besonders vorteilhaft ist dabei die Tatsache, dass sich nach der Trennung des Kolbens von der Heizplatte mehrere Isolationsplatten gemeinsam entfernen und wieder einbringen lassen, und zwar mit Hilfe des beschriebenen Kassettenrahmens. Der Kassettenrahmen kann nach Lösen der Verbindungen stirnseitig aus der Presse herausgezogen werden und auch wieder stirnseitig in die Presse eingebracht werden. Damit wird der Austausch der Isolationsplatten selbst unter Berücksichtigung des ggf. sehr geringen freien Bauraums erheblich vereinfacht. Dieses hat den Vorteil, dass sich die Presse insgesamt für hohe Presskräfte auslegen lässt. In einem solchen Fall wird beispielsweise mit Presszylindern mit großem Gewicht und großem Durchmesser und auch hoher Wandstärke gearbeitet. Die Größe der Presszylinder hat selbstverständlich Einfluss auf den freien Bauraum. Durch die erfindungsgemäße Optimierung des Isolationsplattenaustausches lässt sich insgesamt eine Presse schaffen, die für hohe Pressdrücke ausgelegt werden kann.The invention is based in this first aspect of the invention on the recognition that the replacement of the insulation panels, which form wearing parts, can be considerably simplified, so that the maintenance can be minimized and thus costs can be reduced. Particularly advantageous is the fact that after the separation of the piston from the heating plate can remove a plurality of insulation plates together and bring back, with the help of the described cassette frame. The cassette frame can be pulled out of the press after releasing the connections on the face side and also be introduced into the press again on the face side. This considerably simplifies the replacement of the insulation panels, even taking into account the potentially very small free installation space. This has the advantage that the press can be designed overall for high pressing forces. In such a case, for example, working with pressing cylinders with large weight and large diameter and high wall thickness. The size of the press cylinder naturally influences the free space. The optimization of the insulation panel replacement according to the invention makes it possible to create a total of a press that can be designed for high compression pressures.
Die Presszylinder sind - wie erläutert - in mehreren in Pressenlängsrichtung hintereinander angeordneten Reihen angeordnet, so dass diese Reihen selbst quer zur Pressenlängsrichtung verlaufen. Die einzeln fluchtend hintereinander angeordneten Presszylinder bilden folglich die "Spalten" der Presszylindermatrix. Mit Hilfe der beschriebenen Kassettenrahmen lassen sich nun mehrere hintereinander angeordnete Kolben einer Spalte zusammenfassen. Grundsätzlich besteht die Möglichkeit, einen durchgehenden Kassettenrahmen für eine gesamte Presszylinderspalte zur Verfügung zu stellen. Die Handhabung kann jedoch vereinfacht werden, wenn zwei Kassettenrahmen pro Spalte zur Verfügung gestellt werden, welche jeweils von unterschiedlichen Stirnseiten der Presse ein- und ausbaubar sind.The press cylinders are - as explained - arranged in a plurality of rows arranged in the press longitudinal direction one behind the other, so that these rows themselves extend transversely to the press longitudinal direction. The individual cylinders arranged in succession press cylinders thus form the "columns" of the press cylinder matrix. With the help of the described cassette frame can now be summarized several successively arranged piston a column. In principle, it is possible to provide a continuous cassette frame for an entire press cylinder column. However, the handling can be simplified if two cassette frames are provided per column, which can be installed and removed from different faces of the press.
Nach einem zweiten Aspekt der Erfindung, dem selbstständige Bedeutung zukommt, ist die Heizplatte an den Kolben mit zwischen zwei benachbarten Zylindern angeordneten Befestigungsplatten befestigt, welche in Befestigungsnuten der Kolben oder einer Kolbenverlängerung formschlüssig eingreifen und gegen die Pressenplatte verspannt sind. Im Falle einer Oberkolbenpresse wird folglich die obere Pressenplatte mit diesen Befestigungsplatten an den Kolben befestigt. Die Befestigung der Kolben erfolgt demnach nicht mehr in aufwändiger Weise mittels zwischengeschalteter Befestigungselemente, sondern die Befestigungsplatten sind zwischen zwei benachbarten Zylindern angeordnet und sie dienen im Übrigen der gleichzeitigen Befestigung mehrerer Kolben, nämlich zumindest zweier benachbarter Kolben einer Zylinderreihe. Dieses erlaubt ebenfalls eine einfache Montage und Demontage, und zwar selbst dann, wenn die Zylinder und deren Kolben zur Erzielung besonders hoher Pressdrücke besonders groß dimensioniert sind. Von besonderer Bedeutung ist auch bei diesem Aspekt der Erfindung die Tatsache, dass mehrere Befestigungsplatten für die gemeinsame Befestigung der Pressenplatte an mehreren in Pressenlängsrichtung hintereinander angeordneten Kolben zu einer gemeinsamen Befestigungsleiste zusammengefasst sind, welche sich entlang der Pressenlängsrichtung erstreckt. So lassen sich nicht nur zwei benachbarte Kolben einer Zylinderreihe, sondern insbesondere auch mehrere Kolben einer Kolbenspalte bzw. zweier benachbarter Spalten gemeinsam mit einer Befestigungsleiste fixieren. Dieses hat - ähnlich wie bei der Ausgestaltung des Kassettenrahmens für die Isolationsplatten - den Vorteil, dass sich die Befestigungsleiste stirnseitig aus der Presse herausziehen und in die Presse einführen lässt, so dass auch hier bei reduziertem Bauraum eine einfache Montage und Demontage möglich ist. Auch hier besteht die Möglichkeit, mit einer durchgehenden Befestigungsleiste sämtliche Kolben einer Zylinderspalte zu fixieren. Es kann jedoch auch hier zweckmäßig sein, mit zwei Befestigungsleisten zu arbeiten, welche jeweils die Hälfte einer Kolbenspalte abdecken, so dass von den beiden stirnseitigen Enden der Presse jeweils eine Befestigungsleiste eingeführt wird. Auch diese Ausgestaltung mit den erfindungsgemäßen Befestigungsplatten und Befestigungsleisten optimiert die Wartungsarbeiten bei reduziertem Bauraum, so dass eine Presse mit Auslegung für hohe Pressdrücke realisierbar ist.According to a second aspect of the invention, which has independent significance, the heating plate is fastened to the piston with fastening plates arranged between two adjacent cylinders, which fastening grooves the piston or a piston extension engage positively and are clamped against the press plate. In the case of an upper-piston press, therefore, the upper press plate is fastened to the piston with these fixing plates. The attachment of the piston is therefore no longer in a complex manner by means of intermediate fasteners, but the mounting plates are arranged between two adjacent cylinders and they are otherwise the simultaneous attachment of several pistons, namely at least two adjacent pistons of a row of cylinders. This also allows easy assembly and disassembly, even if the cylinders and their pistons are particularly large to achieve very high compression pressures. Of particular importance in this aspect of the invention, the fact that a plurality of mounting plates for the common fastening of the press plate are summarized at several in the press longitudinal direction successively arranged piston to a common fastening strip which extends along the press longitudinal direction. Thus, not only two adjacent pistons of a row of cylinders, but in particular several pistons of a piston column or two adjacent columns can be fixed together with a fixing strip. This has - similar to the design of the cassette frame for the insulation panels - the advantage that the fastening strip can be pulled out of the front of the press and inserted into the press, so that even here with reduced space easy assembly and disassembly is possible. Again, there is the possibility to fix with a continuous fixing strip all the pistons of a cylinder column. However, it may also be expedient here to work with two fastening strips, which each cover half of a piston gap, so that in each case a fastening strip is introduced from the two front ends of the press. Also, this embodiment with the mounting plates according to the invention and fixing strips optimizes the maintenance work in a reduced space, so that a press with design for high compression pressures can be realized.
Die Befestigungsplatten bzw. -leisten sind vorzugsweise mittels Spannelementen, z. B. Spannschrauben oder Spannbolzen nicht unmittelbar in die Heizplatte eingeschraubt, sondern unter Zwischenschaltung von Distanzstücken, wobei diese Distanzstücke wiederum mit Befestigungsschrauben an den Heizplatten befestigt sind. Diese Maßnahmen ermöglichen es, die Distanzstücke mit einer Vielzahl von Schrauben in der Pressenplatte zu befestigen, so dass die Belastung der Pressenplatte selbst reduziert wird. Die eigentliche Fixierung erfolgt dann z. B. mit einer einzigen Spannschraube, die folglich hohen Belastungen unterliegt. Diese Belastungen werden jedoch nun nicht unmittelbar in die Heizplatte, sondern zunächst in das Distanzstück eingebracht und von dort über die mehreren Befestigungsschrauben verteilt. Auch diese Überlegungen tragen der Tatsache Rechnung, dass sich die Presse auf diese Weise für hohe Pressdrücke auslegen lässt.The mounting plates or strips are preferably by means of clamping elements, for. B. clamping screws or clamping bolts are not screwed directly into the heating plate, but with the interposition of spacers, these spacers are in turn secured with fastening screws to the heating plates. These measures make it possible to attach the spacers with a plurality of screws in the press plate, so that the load on the press plate itself is reduced. The actual fixation is then z. B. with a single clamping screw, which is therefore subject to high loads. However, these loads are not now introduced directly into the hot plate, but first in the spacer and distributed from there over the several screws. These considerations also take into account the fact that the press can be interpreted in this way for high compression pressures.
In bevorzugter Weiterbildung schlägt die Erfindung vor, dass an der oberen oder unteren Pressenplatte ein oder mehrere Zentrierplatten befestigt sind, welche zur Positionierung der Pressenplatte in Längsrichtung und/oder Querrichtung in Nuten der Zylinderkolben eingreifen. Dabei geht die Erfindung von der Erkenntnis aus, dass sich mit Hilfe solcher Zentrierplatten eine optimale Positionierung und Führung der Pressenplatten sowohl in Längsrichtung als auch in Querrichtung realisieren lässt. Dieses gelingt in konstruktiv sehr einfacher Weise. Die Presse kann auf diese Weise mit hoher Präzision arbeiten. Dieses ist insbesondere dann vorteilhaft, wenn mit der Presse hochwertige Dekore, z. B. bei der Herstellung von Laminatplatten, aufgebracht werden und zugleich eine "deckungsgleiche" Prägung eingebracht wird.In a preferred embodiment, the invention proposes that one or more centering plates are attached to the upper or lower press plate, which engage in the longitudinal direction and / or transverse direction of the positioning of the press plate in grooves of the cylinder piston. The invention is based on the recognition that with the help of such centering optimal positioning and guidance of the press plates can be realized both in the longitudinal direction and in the transverse direction. This succeeds in a structurally very simple way. The press can work in this way with high precision. This is particularly advantageous if high quality with the press Decors, z. As in the production of laminate panels, are applied and at the same time a "congruent" embossment is introduced.
Nach einem dritten Aspekt der Erfindung wird vorgeschlagen, dass an den Zylindergehäusen Arretierungsklammern befestigt sind, welche jeweils gemeinsam mit einer Nut in den Zylinderkolben eine Arretierungsaufnahme bilden, in welche zur Sicherung des Kolbens in einer Rückzugsposition ein Arretierungsmittel, z. B. eine Arretierungsstange einschiebbar ist. Bei diesem Aspekt geht die Erfindung von der Tatsache aus, dass es im Zuge von Wartungs- und Montagearbeiten regelmäßig erforderlich ist, die Kolben in der zurückgezogenen Position am Zylindergehäuse zu fixieren. Bislang war es üblich, dazu im Einzelfall separate Klammern oder Schellen zu montieren. Insbesondere wenn die Presse für hohe Pressdrücke ausgelegt werden soll und sich dadurch der zur Verfügung stehende freie Raum reduziert, sind die bekannten Maßnahmen aufwendig. Erfindungsgemäß können die an den Zylindergehäusen befestigten Arretierungsklammern nun "dauerhaft" am Zylindergehäuse montiert bleiben, da sie selbst die Bewegung des Kolbens nicht beeinflussen oder behindern. Denn die Klammern selbst greifen nicht in die Nuten im Kolben ein. Die formschlüssige Verbindung zwischen Klammer und Kolben wird durch eine zusätzliche Arretierungsstange realisiert, welche einerseits in die Nut des Kolbens und andererseits in die Arretierungsklammer eingreift bzw. von der Klammer untergriffen wird und so die formschlüssige Verbindung herstellt. Es ist zum Zwecke der Arretierung folglich nicht mehr erforderlich, die Klammern selbst zu montieren, sondern es muss lediglich das Arretierungsmittel, z. B. die Arretierungsstange oder Einschubstange eingeschoben werden. Auch dieses kann auf einfache Weise von den Pressenstirnseiten aus erfolgen, so dass mit einer von der Stirnseite in die Presse einführbaren Arretierungsstangen mehreren Kolben gemeinsam arretierbar sind, z. B. sämtliche Kolben einer Kolbenspalte der Zylindermatrix. Es besteht auch hier die Möglichkeit, von jeder Stirnseite jeweils eine Arretierungsstange einzuschieben, welche dann die halbe Kolbenspalte abdeckt, so dass pro Kolbenspalte zwei Arretierungsstangen verwendet werden.According to a third aspect of the invention it is proposed that on the cylinder housings locking brackets are attached, which together with a groove in the cylinder piston form a locking receptacle, in which for securing the piston in a retracted position, a locking means, for. B. a Arretierungsstange is inserted. In this aspect, the invention is based on the fact that in the course of maintenance and installation work, it is regularly necessary to fix the pistons in the retracted position on the cylinder housing. So far, it has been customary to install in individual cases separate brackets or clamps. In particular, when the press is to be designed for high compression pressures and thereby reduces the available free space, the known measures are expensive. According to the invention, the locking brackets fastened to the cylinder housings can now remain permanently mounted on the cylinder housing since they themselves do not influence or obstruct the movement of the piston. Because the brackets themselves do not engage in the grooves in the piston. The positive connection between the clamp and piston is realized by an additional Arretierungsstange, which engages on the one hand in the groove of the piston and on the other hand in the Arretierungsklammer or is engaged by the clip and thus produces the positive connection. It is therefore no longer necessary for the purpose of locking to mount the brackets themselves, but it only has the locking means, for. B. the Arretierungsstange or insertion rod are inserted. Again, this can be done in a simple manner from the press faces, so that a plurality of pistons can be locked together with a insertable from the front page in the press locking rods, z. B. all pistons one Piston gaps of the cylinder matrix. It is also possible here to insert a locking rod from each end face, which then covers half the piston gap, so that two locking rods are used per piston gap.
Die Arretierungsklammern weisen vorzugsweise einen Arretierungsschenkel auf, der die Stange im arretierten Zustand des Kolbens untergreift. Dieser Schenkel ist so dimensioniert, das er die Bewegung des Kolbens nicht behindert.The locking clips preferably have a locking leg, which engages under the rod in the locked state of the piston. This leg is dimensioned so that it does not hinder the movement of the piston.
Besonders bevorzugt sind die Zylinder in den Rahmenfenstern unter die Pressenrahmen untergestellt. Es liegt folglich im Rahmen der Erfindung, dass die Zylinder selbst nicht mit ihren Zylindergehäusen in den Zwischenraum zwischen den Pressenrahmen eingreifen. Diese Ausführungsform ist insbesondere dann zweckmäßig, wenn die Zylinder für sehr hohe Presskräfte ausgelegt werden. Denn besonders bevorzugt betrifft die Erfindung eine Presse, die für einen spezifischen Pressdruck von mehr als 600 N/cm2 besonders bevorzugt 700 N/cm2 und mehr ausgelegt ist.Particularly preferably, the cylinders are placed in the frame windows under the press frame. It is therefore within the scope of the invention that the cylinders themselves do not engage with their cylinder housings in the space between the press frame. This embodiment is particularly useful when the cylinders are designed for very high pressing forces. For particularly preferably, the invention relates to a press which is designed for a specific pressure of more than 600 N / cm 2, more preferably 700 N / cm 2 and more.
Nach einem weiteren Vorschlag ist vorgesehen, dass die Presse zumindest zwei Hydrauliktanks aufweist, die nicht zentriert auf das Pressengestell aufgesetzt sind, sondern bevorzugt in Seitenbereichen der Presse und folglich seitlich versetzt zur senkrechten Mittelebene der Presse angeordnet sind, besonders bevorzugt seitlich versetzt zu den Pressenzylindern. Eine solche Ausführungsform hat gegenüber einer herkömmlichen Ausführungsform mit einem zentralen Hydrauliktank den Vorteil, dass der Bauraum oberhalb der Zylinder frei zugänglich ist, so dass die Presszylinder insgesamt nach oben aus dem Pressengestell entfernt werden können. Dieses kann beispielsweise mit ohnehin vorhandenen Hebezeugen, z. B. einen Hallenkran oder Deckenkran erfolgen. Es liegt jedoch auch im Rahmen der Erfindung, dass eine spezielle Hebevorrichtung auf das Pressengestell aufgesetzt wird oder im Bereich der Presse montiert wird. Jedenfalls wird im Rahmen der Erfindung eine Konstruktion realisiert, bei welcher sich die Presszylinder ohne Weiteres vollständig aus der Presse ausbauen lassen, und zwar vorzugsweise, indem die Presszylinder nach Lösen der Fixierung und nach Lösen der Befestigung von der jeweiligen Heizplatte nach oben aus dem Pressengestell entfernt werden.According to a further proposal it is provided that the press has at least two hydraulic tanks, which are not centered on the press frame, but are preferably arranged in lateral areas of the press and thus laterally offset from the vertical median plane of the press, more preferably laterally offset to the press cylinders. Such an embodiment has the advantage over a conventional embodiment with a central hydraulic tank that the space above the cylinder is freely accessible, so that the pressing cylinder can be removed altogether upwards out of the press frame. This can, for example, with already existing Hoists, z. B. a hall crane or overhead crane done. However, it is also within the scope of the invention that a special lifting device is placed on the press frame or mounted in the press. Anyway, in the context of the invention, a construction is realized in which the press cylinder can be easily completely removed from the press, preferably by the press cylinder after loosening the fixation and after loosening the attachment of the respective heating plate upwards removed from the press frame become.
Es liegt grundsätzlich im Rahmen der Erfindung, die Hydrauliktanks oben auf die Pressenrahmen aufzusetzen. Besonders bevorzugt werden die Hydrauliktanks jedoch nicht unmittelbar auf die Pressenrahmen aufgesetzt, sondern auf Verbindungsbolzen oder -stangen, welche die Pressenrahmen untereinander verbinden. Denn besonders bevorzugt werden die einzelnen Pressenrahmen mit in Pressenlängsrichtung verlaufenden Verbindungsbolzen oder -stangen miteinander verbunden. Auf diese Verbindungsbolzen können die Hydrauliktanks mit geeigneten Tankträgern aufgesetzt werden, so dass eine Entlastung der einzelnen Rahmenbleche gewährleistet und eine Beschädigung vermieden wird.It is basically within the scope of the invention to set up the hydraulic tanks on top of the press frame. However, the hydraulic tanks are not particularly preferably placed directly on the press frame, but on connecting bolts or rods which connect the press frame with each other. For particularly preferably, the individual press frame are connected to each other with extending in the press longitudinal direction connecting bolt or rods. On these connecting bolts, the hydraulic tanks can be placed with suitable tank carriers, so that a relief of the individual frame plates guaranteed and damage is avoided.
Die Presse ist bevorzugt als Vielkolbenpresse ausgebildet. Das bedeutet, dass die einzelnen Presszylinderreihen nicht nur lediglich zwei Presszylinder aufweisen, sondern zumindest drei, besonders bevorzugt zumindest vier Presszylinder. In Pressenlängsrichtung können dann z. B. zehn Reihen von Presszylindern oder mehr hintereinander angeordnet sein. Eine solche Vielkolbenpresse mit 40 Presszylindern oder mehr erlaubt eine variable Anpassung der Presse an unterschiedlich zu verpressende Plattenformate. Dazu können die vielen Presszylinder auch unterschiedlich ansteuerbar sein. So können beispielsweise mehrere unabhängig voneinander einstellbare Hydrauliksysteme bzw. Presssysteme realisiert sein, z. B. sechs unabhängig voneinander einstellbare Presssysteme oder mehr.The press is preferably designed as a multi-piston press. This means that the individual press cylinder rows not only have only two press cylinders, but at least three, more preferably at least four press cylinders. In the press longitudinal direction z. B. ten rows of press cylinders or more can be arranged one behind the other. Such a multi-piston press with 40 press cylinders or more allows a variable adjustment of the press to different to be pressed plate formats. For this purpose, the many press cylinders can also be controlled differently. So, for example be implemented independently adjustable hydraulic systems or pressing systems, z. B. six independently adjustable pressing systems or more.
Insgesamt wird eine Kurztaktpresse geschaffen, welche für besonders hohe Pressdrücke von 700 N/cm2 und mehr ausgelegt ist. Die Presse ist insbesondere für die Kurztaktbeschichtung von Holzwerkstoffplatten mit z. B. Dekorpapieren geeignet. Diese Kurztaktbeschichtung kommt beispielsweise bei der Herstellung von Laminatböden, Wandpanelen, Möbeln oder Türen zum Einsatz.Overall, a short-cycle press is created, which is designed for particularly high compression pressures of 700 N / cm 2 and more. The press is especially for the short-cycle coating of wood-based panels with z. B. decorative papers suitable. This short-cycle coating is used, for example, in the production of laminate flooring, wall panels, furniture or doors.
Besonders bevorzugt ist die erfindungsgemäße Presse als Oberkolbenpresse ausgeführt, d. h. die Presszylinder arbeiten auf die obere Heizplatte, während die untere Heizplatte (ortsfest) auf den unteren Querholmen der Pressenrahmen aufliegt. Die Presszylinder sind dabei in der Regel als einfach wirkende Hydraulikzylinder ausgebildet, mit denen sich lediglich Presskräfte in einer Richtung aufbringen lassen. Zum Öffnen der Presse sind in der Regel zusätzliche Rückzugzylinder vorgesehen. Grundsätzlich liegt es jedoch auch im Rahmen der Erfindung, die Presszylinder als doppelt wirkende Hydraulikzylinder, z. B. Differentialzylinder, auszubilden, so dass dann ggf. auf Rückzugzylinder verzichtet werden kann. Im Übrigen umfasst die Erfindung selbstverständlich auch Unterkolbenpressen, bei denen die Presszylinder auf die untere Pressenplatte arbeiten.Particularly preferably, the press according to the invention is designed as an upper-piston press, d. H. the pressing cylinders work on the upper heating plate, while the lower heating plate (stationary) rests on the lower crossbars of the press frame. The press cylinders are usually designed as a single-acting hydraulic cylinder, which can be applied only in one direction pressing forces. To open the press additional return cylinders are usually provided. Basically, however, it is also within the scope of the invention, the press cylinder as a double-acting hydraulic cylinder, z. B. differential cylinder, form, so that then possibly can be dispensed with retraction cylinder. Incidentally, of course, the invention also includes sub-piston presses, in which the pressing cylinder work on the lower press plate.
Im Folgenden wird die Erfindung anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung näher erläutert. Es zeigen
- Fig. 1
- eine erfindungsgemäße Kurztaktpresse in einer Stirnansicht,
- Fig. 2
- eine erfindungsgemäße Presse in einer Seitenansicht,
- Fig. 3
- einen vergrößerten Ausschnitt aus dem Gegenstand nach
Fig. 2 , - Fig. 4
- einen Schnitt A-B durch den Gegenstand nach
Fig. 3 , - Fig. 5
- einen Schnitt C-D durch den Gegenstand nach
Fig. 4 , - Fig. 6
- einen vergrößerten Ausschnitt aus dem Gegenstand nach
Fig. 1 , - Fig. 7
- einen vereinfachten Horizontalschnitt durch den Gegenstand nach
Fig. 1 , - Fig. 8
- eine vereinfachte perspektivische Ansicht des Gegenstandes nach
Fig. 6 und - Fig. 9a,b,c
- einen stark vereinfachten Horizontalschnitt durch die Presse bei der Verarbeitung unterschiedlicher Plattenformate.
- Fig. 1
- a short-cycle press according to the invention in an end view,
- Fig. 2
- a press according to the invention in a side view,
- Fig. 3
- an enlarged section of the object after
Fig. 2 . - Fig. 4
- cut AB through the object
Fig. 3 . - Fig. 5
- a cut CD through the object after
Fig. 4 . - Fig. 6
- an enlarged section of the object after
Fig. 1 . - Fig. 7
- a simplified horizontal section through the object
Fig. 1 . - Fig. 8
- a simplified perspective view of the object according to
Fig. 6 and - Fig. 9a, b, c
- a greatly simplified horizontal section through the press in the processing of different plate formats.
Die Figuren zeigen eine Kurztaktpresse als Einetagenpresse für die Herstellung bzw. für die Beschichtung von Holzwerkstoffplatten. Diese Kurztaktpresse weist in ihrem grundsätzlichen Aufbau ein Pressengestell 1 auf, welches sich aus mehreren in Pressenlängsrichtung R hintereinander gereihten Pressenrahmen 2 zusammensetzt. Die Pressenlängsrichtung R entspricht der Arbeitsrichtung und folglich der Beschickrichtung und Entleerrichtung der Presse. Die Pressenrahmen 2 sind im Ausführungsbeispiel aus Stahlblechzuschnitten gefertigt, und zwar in "Fensterbauweise", d. h. die einzelnen Pressenrahmen 2 weisen jeweils ein Rahmenfenster 3 auf, welches oben vom oberen Querholm 2a und unten vom unteren Querholm 2b begrenzt wird. Die einzelnen Pressenrahmen 2 sind mit Verbindungsstangen 4 miteinander verbunden, welche in Pressenlängsrichtung orientiert sind. Zwischen dem Rahmen 2 sind Distanzrohre auf die Verbindungsstangen 4 aufgesteckt. Die Presse weist eine obere Pressenplatte 5 und eine untere Pressenplatte 6 auf. Diese Pressenplatten 5, 6 sind als beheizte Pressenplatten und folglich Heizplatten ausgebildet. Die Presse ist in einer Vielzahl von Presszylindern 7 ausgerüstet, welche im Ausführungsbeispiel als einfach wirkende Hydraulikzylinder 7 ausgebildet sind. Jeder Presszylinder 7 weist einerseits ein Zylindergehäuse 8 und andererseits einen Zylinderkolben 9 auf. Die Presse ist als Oberkolbenpresse ausgeführt, d. h. die Presszylinder 7 sind mit ihrem Zylinderkolben 9 an die (bewegliche) obere Pressenplatte 5 angeschlossen, während die untere Pressenplatte 6 im Wesentlichen ortsfest auf den unteren Querholmen 2b der Pressenrahmen 2 aufliegt. Die Presszylinder 7 sind in die Rahmenfenster 3 eingestellt und unter die oberen Querholme 2a der Pressenrahmen 2 untergestellt, d. h. sie stützen sich im Zuge der Aufbringung der Presskraft mit ihren oberen stirnseitigen Enden an den oberen Querholmen 2a der Pressenrahmen ab (vgl.
Die
Die Rahmenbolzen 10 sind im Ausführungsbeispiel als massive Bolzen ausgebildet. Die Länge der Bolzen entspricht dem äußeren Abstand zweier benachbarter Pressenrahmen. Die Rahmenbolzen 10 sind mit den Spannschrauben 12 unter Zwischenschaltung von Kraftverteilplatten 14 verschraubt. Diese gewährleisten eine einwandfreie Abstützfläche der Muttern bzw. Spannschrauben auf den Rahmenbolzen 10, welche im Ausführungsbeispiel einen runden Querschnitt aufweisen.The
Um die Presszylinder 7 zum Zwecke der Wartung oder zum Zwecke des Austauschs einfach nach oben aus der Presse ausbauen zu können, wird bei dem dargestellten Ausführungsbeispiel auf den sonst üblichen zentralen Hydrauliktank verzichtet. Stattdessen ist gleichsam ein Doppeltank realisiert. So zeigt
Selbstverständlich ist es erforderlich, die Presszylinder 7 bzw. deren Zylinderkolben 9 vor dem Ausbau von der (oberen) Pressenplatte 5 zu lösen. Diese wird im Folgenden näher erläutert, insbesondere anhand der
Eine vergleichende Betrachtung der
Die
Die
Schließlich zeigt
Im Übrigen ist in den Figuren angedeutet, dass die Presse zusätzlich mit Rückzugzylindern 31 ausgerüstet ist. Denn die Presszylinder 7 selbst sind im Ausführungsbeispiel als einfach wirkende Zylinder ausgebildet, mit denen lediglich Presskräfte aufgebracht werden. Zum Öffnen der Presse kommen dann die Rückzugszylinder 31 zum Einsatz.Incidentally, it is indicated in the figures that the press is additionally equipped with
Die
Im Übrigen wird vorzugsweise mit Heizplatten sehr hoher Qualität und sehr hoher Oberflächenqualität gearbeitet. Die Heizplatten können einen Traganteil von 97 % bis 100 % haben. Die Presszylinder sind momentenfähig am Pressenrahmen befestigt. Die Regelung der Presszylinder erfolgt über Proportionalventile. Incidentally, heating plates of very high quality and very high surface quality are preferably used. The heating plates can have a carrying percentage of 97% to 100%. The press cylinders are torque capable attached to the press frame. The control of the press cylinder via proportional valves.
Claims (10)
- A cycle press, in particular short cycle press, for producing and/or coating board-like materials, in particular wood-based material boards,
with a press stand (1) having multiple press frames (2) arranged in a row in press longitudinal direction (R) and having an upper press plate (5) and having a lower press plate (6),
wherein the upper press plate (5) or the lower press plate (6) is loaded with press cylinders (7), which are supported on the press frames (2), characterized
in that between cylinder pistons (9) of the press cylinders (7) and the respective press plate (5, 6) insulation plates (23) are arranged, these insulation plates (23) being inserted into cassette mountings (24),
wherein multiple cassette mountings (24) are connected via longitudinal connections (25) subject to forming a multiple cassette frame (24, 25), which can be pulled out of or introduced into the press at the face end. - The press according to Claim 1 or according to the preamble of Claim 1, characterized in that the press plate (5, 6) is fastened to the cylinder piston (9) with fastening plates (17) arranged between two adjacent press cylinders (7), which engage in fastening grooves (18) of the cylinder pistons (9) or a piston extension in a positively joined manner and are braced against the press plate (5, 6),
wherein the fastening plates (17) for the joint fastening of the press plate (5, 6) on multiple cylinder pistons (9) arranged one after the other in press longitudinal direction (R) are combined into a joint fastening strip (17'), which extends in press longitudinal direction (R) and can be pulled out of or introduced into the press at its face end. - The press according to Claim 2, characterized in that the fastening plates (17) or the fastening strip (17') are screwed with clamping screws (19) into spacers (21), which are fastened to the press plate (5, 6).
- The press according to any one of the Claims 1 to 3, characterized in that on the upper or lower press plate (5, 6) one or multiple centring plates (26) are fastened, which for positioning the press plate in longitudinal direction and/or transverse direction engage into grooves (18) of the cylinder pistons (9).
- The press according to any one of the Claims 1 to 4 or according to the preamble of Claim 1, characterized in that on the cylinder housings (8) locking clamps (28) are fastened, each of which jointly with a groove (30) in the cylinder piston (9) form a locking mounting, into which for securing the piston in a retraction position a locking means (29) can be inserted.
- The press according to Claim 5, characterized in that the locking means (29) is designed as a locking rod.
- The press according to Claim 6, characterized in that with a locking rod (29) that can be introduced into the press at a face end, multiple pistons can be jointly locked.
- The press according to any one of the Claims 5 to 7, characterized in that the locking clamps are fastened to the cylinder housing at the bottom.
- The press according to Claim 8, characterized in that the locking clamps are fastened to the lower face end and/or are designed L-shaped.
- The press according to any one of the Claims 1 to 9, characterized in that the press is designed for a pressing pressure of at least 600 N/cm2, preferentially at least 700 N/cm2.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20110167932 EP2527135B1 (en) | 2011-05-27 | 2011-05-27 | Cycle press |
PCT/EP2012/059507 WO2012163734A1 (en) | 2011-05-27 | 2012-05-22 | Cycle press |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP20110167932 EP2527135B1 (en) | 2011-05-27 | 2011-05-27 | Cycle press |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2527135A1 EP2527135A1 (en) | 2012-11-28 |
EP2527135B1 true EP2527135B1 (en) | 2014-07-16 |
Family
ID=45373593
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20110167932 Active EP2527135B1 (en) | 2011-05-27 | 2011-05-27 | Cycle press |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2527135B1 (en) |
WO (1) | WO2012163734A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103223730B (en) * | 2013-04-08 | 2015-09-23 | 南通中液液压机有限公司 | Energy-conservation environmental protection wall light thermal-insulation new material Full Automatic Liquid press |
EP3024646B1 (en) * | 2013-07-23 | 2022-05-25 | Modus One GmbH | Force module and modular press system |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7145135U (en) * | 1972-08-31 | Sack Gmbh | Multi-cylinder forging press | |
DE2334450C3 (en) * | 1973-07-06 | 1979-03-15 | Maschinenfabrik J. Dieffenbacher Gmbh & Co, 7519 Eppingen | Hot plate press |
DE3012710A1 (en) * | 1980-04-01 | 1981-10-08 | Maschinenfabrik J. Dieffenbacher Gmbh & Co, 7519 Eppingen | Hot press esp. for fibreboard and chipboard - has quickly replaced insulating strips and panels |
DE19937694B4 (en) | 1999-08-10 | 2004-11-25 | Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg | Plate press, especially one-day press |
DE10122967A1 (en) | 2001-05-11 | 2002-11-14 | Siempelkamp Gmbh & Co | Repetitive press, especially short-period repetitive press, for producing boards, uses pre-programmed pressure application with pressure distribution required for upper press flatness |
DE10320741B4 (en) * | 2003-05-09 | 2005-02-24 | Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg | Continually operated chipboard press for thin panels has upper frame and lower frame with a layer of laterally transposed insulation panels |
DE102004033484B3 (en) | 2004-07-10 | 2006-02-09 | Siempelkamp Maschinen- Und Anlagenbau Gmbh & Co. Kg | Inspection process for cylinder-piston unit of plate press involves fixing piston in upper position and releasing it from press plate |
CN100434248C (en) * | 2006-10-10 | 2008-11-19 | 上海人造板机器厂有限公司 | Method and device for connecting hot pressed board to pressing and lifting hydraulic cylinder |
WO2008043279A1 (en) * | 2006-10-10 | 2008-04-17 | Shanghai Wood-Based Panel Machinery Co., Ltd | A method for connecting hot pressed board to pressing and lifting hydraulic cylinder and its device |
-
2011
- 2011-05-27 EP EP20110167932 patent/EP2527135B1/en active Active
-
2012
- 2012-05-22 WO PCT/EP2012/059507 patent/WO2012163734A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
WO2012163734A1 (en) | 2012-12-06 |
EP2527135A1 (en) | 2012-11-28 |
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