WO2012163729A1 - Continuous press - Google Patents

Abstract

The invention relates to a continuous press for pressing pressed-material mats to form pressed-material boards, in particular for producing engineered wood boards, comprising an upper press part having an upper press plate and a lower press part having a lower press plate and further comprising steel press belts continuously revolving in the upper press part and in the lower press part. The press comprises a press body having a plurality of press frames arranged next to one another in the longitudinal press direction. In addition, pressing cylinders are provided, which are supported on the press frames and work on the upper press plate and the lower press plate. Said continuous press is characterized in that each of the several press frames is combined with several pressing cylinders to form a mechanically and electrically and hydraulically pre-assembled frame unit, which can be transported in a standard freight container.

Description

 Continuous press

Description:

The invention relates to a continuous press for pressing Pressgutmatten pressed slabs, in particular for the production of wood-based panels, with press upper part with upper press plate and press base with lower press plate and in the press upper part and in the press upper part endless rotating steel press belts, with a press frame with a plurality of press longitudinal direction tiered press frame and supported on the press frame and working on the upper press plate and / or the lower press plate press cylinders. Wood-based panels means in the context of the invention in particular chipboard, fiberboard or the like, for example OSB boards or MDF boards. But there are also other pressed material mats, such as plastic mats or sheets includes, which are pressed into plastic sheets. The endless press belts in the press upper part and in the press base are supported, for example with the interposition of Wälzkörperaggregaten, eg rolling rods on the press plates, said rolling rods can be performed to form a Rollstabteppichs endlessly circulating chains. The press may be an upper-piston press, in which the lower press plate is fixedly arranged as a press table, while the upper press plate is loaded with the press cylinders. Alternatively, however, the invention also includes sub-piston presses in which the press cylinders operate on the lower press plate. The press plates are designed as heated press plates and consequently hot plates. Incidentally, the press plates can also be preceded by (flexurally elastic) inlet plates, which form an inlet mouth, and which can likewise be loaded with pressing cylinders.

Continuous presses of this type are known in a wide variety of embodiments (cf., for example, DE 10 2005 009 334 A1). These are large, industrial plants whose production and assembly are associated with high costs. The individual mechanical, electrical and hydraulic components are usually manufactured separately, transported to their destination and then assembled on site. The time required for the installation and commissioning to be carried out outside the company is considerable. In addition, there are considerable transport costs. - This is where the invention starts.

From DE 43 13 606 A1 a method for converting a plate manufacturing plant is known, wherein an existing platen press to be replaced by a continuously operating press. During operation of the existing platen press, a pre-assembly space is created for the continuously operating press to be set up. This continuous press is completely assembled on transportable assembly and transport bridges with several predetermined individual modules. The continuous press is retracted in a test run and after the existing floor press has been switched off, the platen press is removed and taken out of the production hall. The foundations in the production hall are built to accommodate the continuous press and at the same time the continuously operating press is released at the interfaces, the steel belts are removed and the loose rotating production elements are secured. The individual modules of the continuous press are then brought to the press station in a predetermined sequence and mounted there again, so that subsequently the new continuously operating press system can be put into operation (cf DE 43 13 606 A1). The entire pre-assembly and assembly takes place at

this procedure at the destination of the continuous press.

In connection with the manufacture of lightweight panels, it has been proposed alternatively to assemble a continuous press from a plurality of press boxes having a length of seven to eight meters, so that the press boxes can be transported in conventional containers. This proposal refers to a press in special construction.

The invention has for its object to provide a continuous press for pressing Pressgutmatten Pressgutplatten of the type described above, which can be easily and inexpensively and in particular transport and assemble.

To solve this problem, the invention teaches in a continuous press of the type described above that several press frame of the press frame are connected to a plurality of press cylinders to a mechanically and electrically and hydraulically preassembled frame unit, which is transportable in a standard freight container. The frame units are preferably dimensioned such that they can each be transported in a standard freight container according to ISO 668. Particularly preferably, the frame units are dimensioned such that they are each transportable in a standard 20-foot, 40-foot or 45-foot cargo container.

The invention is based on the recognition that the manufacturing costs including transport costs, installation costs and commissioning costs of a continuous double belt press with a

Clearly reduce the press frame from the press frame when the press is assembled from pre-assembled, container-compatible modules. The individual modules can be transported to the manufacturer mechanically, electrically and hydraulically completely pre-assembled and tested in containers to the place of destination. At the destination then only a final assembly of the already pre-assembled individual modules is required, so that the assembly time at the destination can be significantly reduced. The transport costs are also significantly reduced. On the one hand, the invention combines the possibility of pre-assembly with, on the other hand, the possibility of container transport. This combination can significantly reduce both transport costs and assembly costs. Because the individual modules can be loaded directly into standard containers, which can then be transported by truck, train, ship and / or aircraft.

Container means within the scope of the invention a standard freight container, in particular ISO container. ISO containers of this kind are worldwide large-capacity containers standardized according to ISO 668, which are also referred to as sea freight containers. The 20-foot standard container has external dimensions (L / W / H) of 6,058 mx 2,438 mx 2,591 m. Alternatively, the 40-foot container is used with external dimensions 12.192 m x 2.438 m x 2.591 m. Alternatively, a 40-foot high-cube container can be used, which has a height of 2.896 m. Furthermore, a 45-foot high-cube container is used, which measures 13,716 m x 2,438 m x 2,896 m.

Of particular importance is the fact that the modules are hydraulically assembled and thus preassembled. Furthermore, the

Modules are electrically assembled and pre-assembled. The press then emerges on site, as it were, by putting together pre-assembled units. In particular, the individual frame modules are already provided with the hydraulic cylinders and already assembled hydraulically. However, it is within the scope of the invention that the press plates or hot plates, the endlessly circulating steel press belts and / or the endless revolving Rollstabteppiche or rolling rod chains are transported separately and assembled on site and put into operation. The press frames are usually arranged and fastened between lower longitudinal members and upper longitudinal members, wherein the lower longitudinal members are also referred to as foundation supports. Such carriers can z. B. be designed as a double T-beam made of steel. It is within the scope of the invention that the individual frame units are already preassembled and transported with lower side members or side member sections and upper side members or side member sections. Alternatively, it may be appropriate to attach the press frame only on lower foundation beams or foundation support sections and to dispense with the assembly of the upper support first. The assembly of these upper carrier can be done for example at the destination. Then, however, it is expedient to connect the press frame mounted on the lower carriers by means of suitable spacer elements with each other, so that an independently stable frame unit is created, which can be easily preassembled and prefabricated transport.

Incidentally, the press frames can each be designed as frame castings made of cast metal. In this case, the individual press frames can each be designed as one-piece castings, z. B. ductile

Cast iron. Alternatively, however, cast steel can also be used. However, the invention also includes embodiments in which the press frame are made in a conventional manner from sheet steel blanks. It is always useful to work in a known manner with press frame in window construction and consequently press frame with (central) frame window.

In operation of such a continuous press, the steel press belts are passed over infeed and outfeed rollers, with an upper infeed roller and one lower infeed roller mounted in an infeed roller stand, and an upper outfeed roller and a lower outfeed roller mounted in an outfeed roller stand. It is within the scope of the invention to manufacture and transport these roll stands in a conventional manner and to install and put into operation only on site. However, preferably also the roll stands or parts of the roll stands, e.g. upper roll stand half and / or lower roll stand half be designed as mechanically, electrically and hydraulically pre-assembled roller stand units, which are also transportable in the described standard freight container. Consequently, the concept of modular, container-specific construction can not only be applied to the frame units, but can also be extended to the roll stands.

The invention also provides a method for assembling and transporting such a continuous press, wherein a plurality of frame units are mechanically, electrically and hydraulically preassembled and optionally tested in a trial drive.

wherein the preassembled frame units are each loaded in standard containers and transported in these to the destination, wherein the continuous press is formed at the destination of the preassembled frame units by juxtaposition and wherein the press with press plates, steel press belts and Wälzkörperaggregaten, z. As rolling bars and put into operation. In the following the invention will be explained in more detail with reference to a drawing showing only one exemplary embodiment. Show it

1 shows a continuously operating press in a greatly simplified side view,

2 shows a preassembled frame unit of a press according to the invention,

3 shows a standard freight container with a frame unit arranged therein according to FIG. 2, FIG.

Fig. 4 shows a press frame of the frame unit of Fig. 2 and

Fig. 5 is a simplified plan view of the article of FIG. 2 (detail).

In Fig. 1, a continuous press in its basic structure is shown first in a greatly simplified representation. The press is used z. B. the production of wood-based panels, such. Chipboard or fiberglass

plates. The press has a press upper part with upper press plate 1 and a lower press part with lower press plate 2. The press plates 1, 2 are designed as heatable press plates and consequently heating plates. In the press upper part and in the press base endlessly circulating steel press belts 3 are provided, which with the interposition of Wälzkörperaggregaten, z. B. rolling rods are supported on the press plates. These rolling rods are guided on chains and form a roll bar carpet 4, which is merely indicated in the figure. Such a press can be equipped with inlet-side projecting (flexurally elastic or rigid) inlet plates 5, 6. However, the invention also includes embodiments in which dispensed with such inlet plates.

The press has a press frame, which essentially consists of a multiplicity of press frames 7, which are arranged one behind the other in the press longitudinal direction R. These press frame 7 are designed as a closed press frame in window construction with central frame window 17. The successive lined press frame 7 are arranged in the assembled state between the lower side rails 8 and upper side rails 9 and usually attached to this. In order to apply the required pressing forces, the press is equipped with press cylinders 10, which are supported on the press frame 7 and work on the upper press plate 1 or the lower press plate 2. In the embodiment, an embodiment of an upper piston press is shown, in which the press cylinder 10 to work on the upper press plate 1, while the lower press plate 2 is arranged stationary as quasi press table.

The pressing cylinder 10 have, in a conventional manner, a cylinder housing 1 1 and a cylinder piston 12, wherein the cylinder piston 12 at the end

the press plate 1 is connected. Further, such a press has an infeed roller stand 13 and an exit roller stand 14, wherein the infeed roller stand 13 accommodates upper and lower infeed rollers 15 and the exit roller stand 14 receives upper and lower outfeed rollers 16. To these rollers 15, 16, the endless circulating steel press belts 3 are guided.

The press according to the invention is now distinguished by a preassembled, container-compatible modular design. For this purpose, a plurality of press frames 7, each having a plurality of press cylinders 10 are connected to a mechanically, electrically and hydraulically preassembled frame unit 24, which is shown in Figure 2. This frame unit 24 is dimensioned such that it can be transported in a standard freight container 25. This standard freight container 25 with the preassembled frame module 24 arranged therein is shown in FIG. 3, wherein the front wall of the container 25 is shown partly broken away for better understanding.

In the frame module 24 shown in FIGS. 2 and 3, the press frames 7 are fastened on the lower foundation beams 8 or on foundation support sections. The upper side members are not yet mounted in this embodiment during transport. They are only assembled at the destination. In order nevertheless to provide an independently stable and thus transportable frame unit 24, the individual press frame 7 are not only attached to the lower side rails 8, but also interconnected with spacer elements 18 with each other. The screws required for attachment to the upper side members can already be pre-assembled during transport. This is also shown in FIG. A comparative examination of FIGS. 2 and 3 makes it clear that

This pre-assembled module with the press frame 7 and the mounted hydraulic cylinders 10 can be transported in a standard container 25.

In principle, it is within the scope of the invention to include the roll stands or parts of the roll stands, e.g. Pre-assembled roller stand halves as modules in containers to transport. This possibility is not shown in the figures.

The press frame 7 are made in the embodiment as a frame castings made of cast metal. These are window-frame press frames made in one piece as a casting, e.g. made of ductile cast iron. In the exemplary embodiment, these cast press frame 7 are provided with molded, stress-optimized thickening 21. In addition, the press frame with cast mounting lugs 19 are provided with which the press frame 7 in the course of assembly of the press or in the course of pre-assembly of the individual modules to the press longitudinal members 8, 9 are fastened. The cast press frame 7 are also provided in the embodiment with molded mounting lugs 20, in which the pressing cylinder 10 are fixed in the embodiment.

Incidentally, it can be seen in Fig. 2 that the press plates are not mounted even during transport. The lower press plate 8 rests on the lower transverse bars 22 of the press frame 7 during operation. At the upper cross members 23, the pressing cylinder 10 is based, wherein on the piston 12 of the pressing cylinder 10, the upper press plate 1 is mounted.

The connection of the individual frames 7 is indicated by way of example in FIG. 5. The connecting elements 18 may, for. B. overlapping and bolted together L-shaped connection profiles are formed.

Claims

claims: Continuous press for pressing of pressed material mats to pressed slabs, in particular for the production of wood-based panels, with press upper part with upper press plate (1) and press lower part with lower press plate (2), with in the press upper part and in the press base endlessly circulating press belts, z. B. steel press belts (3), with a press frame with a plurality of in the press longitudinal direction (R) lined press frame, and with the press frame (7) supported and on the upper press plate (1) or the lower press plate (2) working press cylinders (10 ), characterized in that a plurality of press frames (7) each having a plurality of pressing cylinders (10) are connected to a mechanically and electrically and hydraulically preassembled frame unit (24), which in a standard freight container (25) is transportable. Press according to claim 1, characterized in that the frame units (24) are dimensioned such that they can each be transported in a standard freight container according to ISO 668. Press according to claim 2, characterized in that the frame units (24) are dimensioned such that they can each be transported in a 20-foot, 40-foot or 45-foot standard freight container. Press according to one of claims 1 to 3, characterized in that the press frame (7) on lower side rails (8) are fixed and that each adjacent press frame (7) of a frame unit (24) with spacer elements (18) to form a stable frame unit ( 24) are interconnected. Press according to one of claims 1 to 4, characterized in that the press frame (7) are designed as frame castings made of cast metal, preferably in each case as one-piece castings. A press according to any one of claims 1 to 5, wherein the endlessly circulating steel press belts (3) are guided in operation via infeed rollers (15) and outfeed rollers (16), an upper infeed roller (15) and a lower infeed roller (15) in an infeed roller pedestal (15). 13) are mountable and an upper discharge roll (16) and a lower discharge roll (16) in a Auslaufwalzenständer (14) are mounted, characterized in that the roll stand (13, 14) or upper or lower roll stand half as mechanically, electrically and hydraulically pre-assembled Roller stand units are formed, which are also transportable in standard freight containers. A method of assembling and transporting a continuous press according to any one of claims 1 to 6, wherein a plurality of frame units are mechanically, electrically and hydraulically preassembled, wherein the preassembled frame units are each loaded into standard freight containers and transported in these to the destination, wherein the continuous press at the destination from the preassembled frame units is formed by juxtaposition and wherein the press with press plates, steel press belts and possibly Wälzkörperaggregaten, z. B. Rolling rods equipped and taken into operation.