DE102017004793A1 - Discharge chair for guide rollers of a double belt press - Google Patents

Abstract

The invention relates to a discharge chair for two superimposed belt deflection rollers (3.1, 3.2) of a double belt press (1) having a left and a right roll stand (5), each having an upper and a lower bearing surface (7.1, 7.2) for a roller bearing (8.1, 8.2) with a height (B), wherein at least one roller bearing (8.1, 8.2) on the bearing surface (7.1, 7.2) in the press passage direction (F) is displaceable, and wherein at least one roll stand (5) has a substantially horizontal pitch (10 , 10.1, 10.2), and wherein an upper roller pedestal part (6.1, 6.2) formed by the division (10, 10.1, 10.2) can be connected to a lower roller pedestal part (6.2, 6.3) formed by connecting elements (17). In order to improve the possibility of mounting the outlet chair with its band deflection rollers, it is provided that at least one roll stand (5) has a pitch (10.1, 10.2) within the overall height (B) of the roller bearings (8.1, 8.2) for the upper and / or lower band deflection roller (3.1, 3.2).

Description

The invention relates to a discharge chair for two superimposed Bandumlenkwalzen a double belt press with a left and a right roll stand, each having an upper and a lower bearing surface for a roller bearing with a height, wherein at least one roller bearing on the bearing surface in the press passage direction is displaceable, and at least one roll stand has a substantially horizontal pitch, and wherein an upper roll stand part formed by the division can be connected to a lower roll stand part formed thereby by means of connecting elements.

A double belt press has two revolving pressing belts, between which a product is compressed using pressure and possibly heat, which act on the belt and thus the product in the interior of at least one belt circulation. The product passes through the pressing area in which the bands lie against each other. In the following, the invention for double belt presses for the production of wood fiber boards by the compression of wood fibers, fiber bundles or fiber fragments will be described. Such a double belt press is sold by the applicant under the name ContiRoll. The invention should not be limited to this product. Rather, nonwovens or plastics are compressed in such presses. In general, therefore, it is double belt presses for the production of plate-shaped or mat-shaped materials, in particular wood-based panels, possibly also for heating material fibers, chips or other bulk material in the production of plate-shaped or mat-shaped materials, in particular of wood-based panels.

The two closed circumferential bands are each guided at least with two Bandumlenkwalzen. An upper and a lower Bandumlenkwalze are installed one above the other at the beginning and at the end of the double belt press. The at the end of the press nip formed by the two bands belt deflection rollers are mounted in roller stands on both sides of the Produktförderweges, of which the upper Bandumlenkwalze the upper circulating press belt back up and the lower the lower peripheral press belt down. The two rollers rotate in opposite directions. Both roll stands are called discharge chairs. These roll stands do not necessarily have to be supported on the foundation of the double belt press, but can also be attached to the frame.

In many cases, at least one roller bearing of a belt deflection roller is displaceably arranged, so that it is possible to counteract a lateral belt course.

Typical known discharge roll chairs are in 3 and 4 shown. More precisely, both figures show the side view of one of the two roll stands 5 with the recorded roller bearings 8.1 . 8.2 for the upper and lower Bandumlenkwalze 3.1 . 3.2 on one side of the double belt press. The roll circumference of the belt deflection roll for the press belt is in 3 indicated by dash-dotted lines. Analog is in exact alignment behind a not visible in the figure second roll stand, which supports the other two roller bearings of upper and lower Bandumlenkwalze. The distance between the two roller stands corresponds to the bearing distance of the band deflection rollers.

It happens that a roll stand a single division 10 so that the weight of a stand does not become too large for the hoists when assembling in the factory floor. The two roller stand parts 6.1 . 6.2 be after roller installation via fasteners 17 for example, on a flange 16 connected, for example screwed.

The drive rollers of a double belt press are movably mounted in the roller stands of a discharge chair. The warehouse windows 18 in which the roller bearing 8.1 . 8.2 on a storage area 7.1 . 7.2 slidably disposed, are either in the roll stand 5 excepted and permanently closed all around ( 3 ), or they are through a closure element 12 preferably closed at the end of the double belt press ( 4 ), so you have easy access to open. The storage area 7.1 . 7.2 may be formed by slide rails, rolling elements or the like.

The lower and upper roller stand 6.1 . 6.2 of the outlet chair 2 can either come pre-assembled to the site or be mounted on the site itself. According to this prior art, the mounting or insertion of the band deflection roller or its roller bearings 8.1 . 8.2 in the warehouse window 18 associated with great difficulties. Either it is held in the crane and the roller bearing must be threaded with a second crane in the roller stand part with permanently closed storage window transversely to the direction of tape travel (arrangement 3 ) become. Or the Bandumlenkwalze is introduced with its roller bearing in the two pre-assembled roller stand parts from the rear into the storage window and then with a closure element 12 locked. In this case, after installation of the lower belt deflection roller, the closure element 12 be screwed to serve as a support a deflection of the upper roller frame part with load on the lower roller or their To avoid roller bearing. Conversely, the situation is particularly complicated if at some point the lower belt deflection must be replaced.

Such a discharge chair is also in the right part of 1 of the DE19931176 B4 indicated. The roll stands are referred to here as side plates.

It is the object of the invention to improve the possibility of mounting the discharge chair with its band deflection rollers.

The object is achieved by the features of claim 1 and in particular by the fact that at least one roll stand has a pitch within the height of the roller bearings for the upper and / or lower Bandumlenkwalze.

The term "within the height" is the span "B" to understand the height level in which the roller bearing is arranged. The division is therefore at a height level within this range. This arrangement has the consequence that at least one roller on a lower, already mounted roller stand part can be easily placed with a lifting tool on the storage area and only then the crane upper upper parts are placed. The roller stand parts are connected with connecting elements, so for example screwed together on a flange.

In particular, however, it is preferred that the roll stands each have a pitch within the overall height of the roller bearings for the upper and the lower belt deflection roller.

This results in a tripartite division of the roll stand, which is particularly easy to handle. The bottom roller stand parts can then be fixed, for example, on the foundation or on the frame construction of the double belt press. The bearing surface for the lower band deflection roller is freely accessible from above in this embodiment, so that it is very easy to set up the lower band deflection roller. Then then a middle roller stand part is placed and in the other episode, the upper Bandumlenkwalze and the upper roller stand part. With this design of the discharge chair, the construction of the end of the double belt press is greatly simplified.
But there is also another advantage that should not be underestimated. Due to the tripartite division of today's sizes of the double belt press, the three roller stands are of the order of magnitude that they still fit into a standard freight container. This saves a considerable amount of freight costs to the installation site.

It is advantageous if at least the lower band deflection roller can be removed from the stand in the press direction without releasing the connecting elements.

This usually means that there is provided at the end of the bearing surface for the roller bearings of the band deflection roller a closed by a closure element opening. After removal of the closure element, the roller bearing and / or the roller axis can be pulled out of the outlet chair.

Preferably, the roll stand from 50 to 100 mm thick sheets are formed.

A construction with such thick sheets is stable and requires significantly less effort in the production than a welded construction.

Preferably, the bearing surface is in a recess of the roll stand or a part thereof.

As a result, the cultivation of bearing surfaces for the roller bearings of Bandumlenkwalzen is avoided on the roll stand. Thus, for example, one makes use of the thickness of a stator sheet in order to form the bearing surface thereon as well.

It is advantageously provided that a storage window is introduced into the roll stand, in which the roll store is displaceable.

Such a storage window can be burned out in the event that thick sheets are used as a roll stand or roller stand parts.

Then it is particularly preferred if the division extends through the storage window.

The storage window is thus opened before placing the next roller stand part to the top. This allows easy use of the roller bearing or the entire band deflection from above. Through the attachment of the next roller stand part, the window is also closed at the top and the Bandumlenkwalzenlager is without Einfädelaufwand in the roll stand window.

Advantageously, it is provided that the stator parts are form-fitting aufeineindsetzbar.

This avoids the risk that a roller stand part may slip through connecting elements before being connected to a second pedestal part and, in the worst case, even damage the belt deflecting roller and its roller bearings. Also results in a total of a more stable and more precise outlet chair design.

Preferably, adjusting elements are based on the alignment of the band deflection rollers on the roll stand.

The reference surface for adjusting the roll inclination with respect to the strip running direction is thereby provided directly on the stand.

• Dabei zeigt 1 eine schematische Darstellung einer ersten Ausführungsform des erfindungsgemäßen Auslaufstuhls.
• 2 stellt eine schematische Darstellung einer zweiten Ausführungsform des erfindungsgemäßen Auslaufstuhls dar.
• 3 betrifft eine erste Ausführungsform des Standes der Technik.
• Und 4 zeigt eine zweite Ausführungsform des Standes der Technik. Die 3 und 4 wurden dabei bereits in der Beschreibung zum Stand der Technik erläutert.

The invention will be explained in more detail below with reference to the drawings.

• It shows 1 a schematic representation of a first embodiment of the discharge chair according to the invention.
• 2 represents a schematic representation of a second embodiment of the discharge chair according to the invention.
• 3 relates to a first embodiment of the prior art.
• And 4 shows a second embodiment of the prior art. The 3 and 4 were already explained in the description of the prior art.

1 on the other hand, presents a first embodiment according to the invention, 2 a second embodiment. Both figures show a side view of the last end of a double belt press 1 , You can see the roll stand 5 for two Bandumlenkwalzen, an upper Bandumlenkwalze 3.1 and a lower band deflection roller 3.2 whose circumference is shown in phantom. The deflected press belt 4 is also indicated above and below. Between the upper and lower press belt 4 is the press nip 19 in which an unillustrated plate-shaped or mat-shaped material is compacted. Necessary pressure-applying actuators and heat-applying heaters are not shown for reasons of clarity.

With an invisible second roll stand beyond the press nip 19 becomes the outlet chair 2 educated. The roller bearings 8.1 . 8.2 understandably rely on both sides of the product to be treated in the roll stands.

The roll stand is divided into three parts in these embodiments. These parts 6.1 . 6.2 . 6.3 are made of a thick sheet of, for example, 80 mm thick and have recesses 11.1 . 11.2 in the assembled state warehouse window 18 form. The height of a roller bearing 8.1 . 8.2 corresponds approximately to the height of a storage window 18 , It is ensured for a game that the roller bearing remains displaceable. For support between roller bearings 8.1 . 8.2 and the bearing window surfaces and the better sliding properties are sliding linings 9 used.

The lower roller stand part 6.3 has a storage area 7.2 on, on the roll bearing 8.2 the lower band deflection roller 3.2 is displaceable. Also on the lower roller frame 6.3 possibly with a form-fitting placed middle roller stand part 6.2 has a storage area 7.1 in a recess. The third roller stand part 6.1 cover the other two.

The division between the roller stand parts 6.1 . 6.2 . 6.3 is at a height level within the height B a roller bearing 8.1 . 8.2 including its sliding surfaces 9 , So it runs through the warehouse window 18 , This makes it possible, in a lower roller frame part, the roller bearing 8.1 . 8.2 simply from the top of the storage area 7.1 . 7.2 put on before the overlying roller stand part fitted and with the lower via connecting elements 17 For example, screws and a flange 16 is connected.

The two embodiments according to the invention 1 and 2 differ only in that the adjusting element 13 , in this case, a hydraulic cylinder-piston assembly once on a closure element 12 of the warehouse window 18 and once on a leg of the recess 11.1 . 11.2 is supported. In the embodiment of 1 lets the lower roller in the press direction F Remove without the fasteners must be solved. For this purpose, only the lower closure element must be removed, where appropriate, the load of the upper Bandumlenkwalze must be intercepted. The execution version after 2 has the advantage that you can stack the roller stand parts in a simple manner.

For both inventive exemplary embodiments results from the tripartite division of the stator 5 in that - considering today's sizes of outlet chairs - the individual stator parts 6.1 . 6.2 . 6.3 do not exceed the dimensions of a standard shipping container and are therefore easy to transport to the assembly point.

LIST OF REFERENCE NUMBERS

1

Double belt press

2

Outlet roller chair of a double belt press

3.1, 3.2

Upper or lower band deflection roller

4

press belt

5

roll housing

6.1, 6.2, 6.3

Roll housing part

7.1, 7.2

Upper or lower storage area

8.1, 8.2

Upper or lower roller bearing

9

sliding lining

10, 10.1, 10.2

division

11.1, 11.2

Upper or lower recess

12

Closure element, anchor

13

Adjustment element, cylinder-piston arrangement

14

piston rod

15

joint

16

flange

17

fasteners

18

warehouse window

19

press nip

F

Press the travel direction

B

warehouse height

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 19931176 B4 [0009]

Claims (9)

Auslaufstuhl for two superimposed Bandumlenkwalzen (3.1, 3.2) a double belt press (1) with a left and a right roll stand (5), each having an upper and a lower bearing surface (7.1, 7.2) for a roller bearing (8.1, 8.2) with a Have height (B), wherein at least one roller bearing (8.1, 8.2) on the bearing surface (7.1, 7.2) in the press passage direction (F) is displaceable, and wherein at least one roll stand (5) has a substantially horizontal pitch (10, 10.1, 10.2 ), and wherein an upper roller stand part (6.1, 6.2) formed by the division (10, 10.1, 10.2) can be connected to a lower roller pedestal (6.2, 6.3) formed by connecting elements (17), characterized in that at least one roller stand (5) has a pitch (10.1, 10.2) within the overall height (B) of the roller bearings (8.1, 8.2) for the upper and / or lower Bandumlenkwalze (3.1, 3.2). Outlet chair according to Claim 1 , characterized in that the roll stand (5) each have a pitch (10.1, 10.2) within the overall height (B) of the roller bearings for the upper and lower Bandumlenkwalze (3.1, 3.2). Outlet chair according to Claim 1 or 2 , characterized in that at least the lower belt deflection roller (3.2) in the press passage direction (F) from the stand (5) can be removed without loosening the connecting elements (17). Outlet chair according to Claim 3 , characterized in that the roll stands are formed from 50 to 100 mm thick sheets. Outlet chair according to Claim 4 , characterized in that the bearing surface (7.1, 7.2) in a recess (11.1, 11.2) of the roll stand (5) or a part (6.1, 6.2, 6.3) is the same. Outlet chair according to Claim 5 , characterized in that a bearing window (18) in the roll stand (5) is introduced, in which the roller bearing (8.1, 8.2) is displaceable. Outlet chair according to Claim 6 , characterized in that the division (10.1, 10.2) through the storage window (18). Auslaufstuhl according to one of Claims 1 to 7 , characterized in that the stator parts (6.1, 6.2, 6.3) are formschlüssig aufeineindsetzbar. Auslaufstuhl according to one of Claims 1 to 8th , characterized in that at least one adjusting element (13) for aligning the Bandumlenkwalzen (3.1, 3.2) on the roll stand (5) is supported.

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