WO2009065617A1

WO2009065617A1 - Apparatus for receiving plate-shaped materials for at least one separation process

Info

Publication number: WO2009065617A1
Application number: PCT/EP2008/009941
Authority: WO
Inventors: Daniel Graf
Original assignee: Trumpf Werkzeugmaschinen Gmbh + Co. Kg
Priority date: 2007-11-24
Filing date: 2008-11-24
Publication date: 2009-05-28
Also published as: CN101873913B; WO2009065430A1; CN101873913A

Abstract

The invention relates to an apparatus for receiving plate-shaped materials (25) for at least one separation process in the plate-shaped material (25) by means of a cutting beam device (24) of a processing machine (11). Said apparatus comprises a first and a second supporting surface (16, 17) that jointly form a supporting table (14) for receiving the plate-shaped material (25), a beam trapping device (26) located between the first and the second supporting surface (16, 17), and a supporting band (19) which extends in the direction of travel of the beam trapping device (26), is intrinsically rigid transverse to the direction of travel, and grips a supporting device (41) in one respective external edge region of the at least one supporting band (19). The supporting device (41) consists of several supporting elements (42) that can be individually lowered from a final position in which the at least one supporting band (19) is placed on the supporting plane.

Description

Device for receiving plate-shaped materials for at least one separation process

The invention relates to a device for receiving plate-shaped materials for at least one separation process in the plate-shaped material with a cutting jet device of a processing machine.

From PCT / EP 2006/004987 a processing machine has become known, which is designed in particular as a laser processing machine and comprises a first and second support surface for receiving a plate-shaped material for a separation process in the plate-shaped material. These first and second bearing surfaces form a common support table. Between the first and second support surface, a line-shaped beam-catching device is provided, which can be moved in the X direction. An opening of the beam-catching device, which Below the plate-shaped material is associated with the cutting beam of the movable cutting device, extends in the Y direction. The first and second support surface is formed, for example, by a support belt, which is lowered in the process of the beam-catching device relative to the support plane down. This support belt is designed as a brush strip which extends in the Y direction across the width of the support table and is held on both sides by a link chain. The beam catcher is coupled to a link which engages the link chain. When moving the beam-catching device, the brush strips are lowered accordingly. The beam-catching device thus remains embedded between the first and second support surface.

The invention has for its object to provide a structurally simple design, which allows a deflection of the support belt to the beam-catching device and at the same time a continuous support of resting on the first and second support surface plate-shaped material.

This object is achieved by the features of claim 1. Further advantageous embodiments and further developments of the device are specified in the further claims.

Due to the inventive design of a support device which has support elements which engage respectively at the outer edge region of the support belt, a structurally simple design of a support device is made possible to hold the at least one support belt in a support plane of the first and second support surface of the support table. In addition, the support device, which consists of a plurality of support elements and acts on the outer edge region of the at least one support belt, has the advantage that the support table can be assembled from two or more mutually parallel support belts. As a result, a longitudinally divided support or a longitudinally divided support table with a plurality of support belts can be achieved. This division of the support table in longitudinal strips has the advantage that a cantilevered route over the entire width of a support table can be divided into several short sections, whereby a reduction of a roller deflection of pulleys is made possible. At the same time, by reducing the diameter of the deflection rollers, weight savings and a reduction in the required space as well as a compact design can be achieved.

According to a preferred embodiment of the invention, it is provided that the at least one support belt, in each case with its outer edge region, rests on a support surface, in particular end-side support surface, of the support elements. Thereby, a simple engagement of the support elements on an underside of the at least one support belt and a simplification in the construction of the support elements is made possible, since only compressive forces acting through the support belt and the plate-shaped material to be accommodated.

According to a further preferred embodiment of the invention, it is provided that the support elements have a rod-shaped body, which is received in a guide device movable up and down. By this rod-shaped body can be provided against rotation in the guide device.

The guide device for receiving the support elements extends according to a preferred embodiment in the direction of travel of the beam-catching device, ie in the X direction, and comprises two mutually parallel and spaced-apart support, between which the support elements are guided adjustable in height. Thus, a structurally simple configured support device may be formed with support elements and a guide device.

Between the carrier and the support element is preferably provided at least one slider or guide body. This at least one slider or guide body made possible by a low-friction receiving and guiding the at least one support element of the support device a low-friction lifting movement of the support elements. Preferably, two at a distance in the stroke direction of the support elements to each other arranged sliding body or guide body provided on the respective carrier, wherein the sliding body or guide body preferably extend parallel to the carriers. As a result, a tilt-free arrangement of the support elements to the carrier pair can be made possible.

The support elements of the support device are held according to a preferred embodiment of the invention in an upper end position by a Endlagenfixierung. Characterized in that a plurality of support elements are arranged along the edge region of the at least one support belt, a relatively small holding force is sufficient for positioning the individual support element in the upper end position. In addition, the positioning of the support element by a holding force in the upper end position has the advantage that a quasi force-free movement of the support elements is made possible outside the end position.

Preferably, the end position fixation is designed as a holding force for positioning the support elements in an upper end position as a magnetic force. This can be given in particular a wear-free arrangement. The magnetic holding force as end position fixation acts only in the upper end position. In a remaining position of the support element, this holding force is ineffective. Thus, a simple and inexpensive arrangement is given, by which at the same time in the upper end position, the resting workpiece is supported. The holding force may alternatively be designed as a clamping force, friction force, clamping force, latching force or locking force. These positive and / or positive locks can also act only in the upper end position as Endlagenfixierung.

Preferably, an end position fixing for positioning an upper end position is provided away from the support surface of the support element and cooperates with the carrier. As a result, a large movement space or a holding force-free lifting movement of the support element can be created. Thus, a sufficiently large space for the beam-catching device and the pulleys is given to allow a deflection and underside passage of the at least one support belt to the beam-catching device. Preferably, a stop is provided at the lower end of the support element, which limits a lifting movement in the end position. As a result, the upper region of the support elements can be formed with a small installation space, so that the distances between two adjoining support strips can be kept small.

According to a further advantageous embodiment of the invention it is provided that the support elements or the carrier have a holding magnet which positions the support element in the end position on the carrier. These holding magnets are preferably fixed by an adhesive or clamping connection or with a pocket-shaped receptacle on the support element or the carrier and allow a structurally simple arrangement and design.

The guiding device preferably accommodates a plurality of supporting elements which are arranged next to one another and whose end faces rest against one another. As a result, complete support can take place along the edge region of the support belts, which also achieves that the support force of each individual support element is reduced. As a result, the holding force can be reduced, which in turn results in a compact construction.

The adjacent end faces of the support elements, which are received by the guide device, preferably each have a guide profile, so that the adjacent guide profiles interlock. This in turn is given a guide of the support elements in the Y direction. On the one hand, the lifting movement of the one support element and the adjacent support element is guided and controlled. On the other hand, a stiffening of the successive supporting elements in the Y direction is given at the same time.

At the upper end of the at least one support element of the support device, a drive element is preferably provided which can be actuated through the backdrop. In particular, a pin-shaped drive element is guided in the gate. As a result, depending on the movement of the beam-catching device, an up and down movement of the respective The supporting element is forcibly actuated. Thus, a controlled lifting movement of the respective support element can be ensured.

According to a preferred embodiment of the device is provided that on the guide device acting in the X direction thermal expansion compensation device is provided. It can thereby be ensured that upon a heating of the support device, in particular of the individual support elements, a preset play of the support elements which are displaceable relative to one another is maintained. The changes in the volume, in particular the length of the support elements due to a thermal expansion in the X direction can be compensated, so that at a changing temperature constant working conditions are given and jamming or distortion of the individual support elements is prevented due to thermal expansion.

The thermal expansion compensation device preferably has a fixed stop at one end of the carrier and a stop which can be displaced in the X direction at the opposite end of the same carrier. This makes it possible that the displaceable stop acts on the support elements and is held displaceably in the X direction upon thermal expansion of the support elements. The uniquely set basic game of support elements is thereby maintained.

Furthermore, it is preferably provided that the thermal expansion compensation device comprises a strip, which is arranged a pointing to the lower end of the support member portion of the support and has a substantially corresponding to the support elements thermal expansion coefficient and preferably each receiving a holding magnet of the respective support element opposite metal plate. So far, due to the large number of support elements arranged one behind the other, which are each fixed by a holding magnet directly to a support, for example made of steel in an end position, a significant frictional force in the X direction occurred with thermal expansion of the support elements. This leads to tension of the support elements with each other. Due to the at least one bar, which slidably mounted on the carrier, it is now possible that the support elements remain freely movable relative to each other, since the strip experiences the same thermal expansion as the support elements as a stop element. This preserves the set basic game and the smooth lifting and lowering. Preferably, the displaceable stop is coupled to the strip, so that this stop is moved by the strip both in and against the X direction due to the same or the same coefficient of thermal expansion as the support elements.

A further preferred embodiment of the invention provides that at least one thermal expansion compensation device acting in the Z direction is provided on the guide device. This ensures that a defined holding position of the support element for receiving the support belt is achieved. As a result, it is also possible at the same time for a safe movement of the support elements from this holding position into a lowered position to be made possible by the activation elements on the support element securely engaging in the slotted link for lowering the support elements.

The thermal expansion compensation device acting in the Z direction preferably has at least one rod element pointing in the Z direction, in particular aligned parallel to the support element, which abuts a preferably adjustable stop on. The rod element is preferably made of a material having a coefficient of thermal expansion which corresponds essentially to the support element, in particular in the same coefficient of thermal expansion. The rod element preferably engages via at least one intermediate piece on at least one strip, which extends along the carrier and is displaceable in its position in the Z direction. Upon thermal expansion, the rod element causes the at least one strip to be moved downwards. As a result, the end stop of the support elements is moved downward, whereby the change in length of the support elements with respect to the position of the support surface is compensated. According to a further preferred embodiment of the invention it is provided that two adjoining support belts rest on a support surface of the support element, wherein a plurality of support elements extend along the edge region of the two adjacent support belts. By this arrangement, in particular a simple structural design will be given in a reduction of a distance of the opposing and adjacent support bands.

According to a further preferred embodiment of the invention it is provided that the at least one support belt is formed as a brush segment belt. Such brush segment bands comprise a plurality of preferably mutually parallel strips which are stiffened in the Y direction and flexible in the X direction due to flexible and zuglastbaren connecting elements to allow a deflection around the beam-catching device. Such brush segment belts have the advantage that a grate-tolerant support for the plate-shaped material is made possible, that is to say that burrs which may arise on the underside of the plate-like material during the separation process do not impair the flat support of the plate-shaped material.

The invention and further advantageous embodiments and developments thereof are described in more detail below with reference to the examples shown in the drawings and explained. The features to be taken from the description and the drawings can be applied individually according to the invention individually or in combination in any combination. Show it:

FIG. 1 is a perspective view of a processing machine;

FIG. 2 shows a schematic side view of the support table according to FIG. 1 with a supporting device according to the invention, FIG. 2b shows a schematic side view of a backdrop,

FIG. 3 shows a perspective detail view of the support table with the support device according to FIG. 2,

4a to c schematic views of a support element of the support device according to the invention,

5 shows a schematic partial view of the supporting device according to FIG. 2a with a thermal expansion compensation device in the X direction, FIG.

6a and b show a schematically enlarged side view and sectional view of the thermal expansion compensation device in the Z direction,

7a and b is a schematic view from above and a schematic sectional view of a trained as a brush segment band support band and

Figure 8 is a perspective view of a longitudinally divided

Support surface with several Auflagebändem.

In Figure 1, a processing machine 11 is shown in perspective. This processing machine 11 is preferably designed as a laser cutting machine or Brennstrahlschneidmaschine. Alternatively, a plasma cutting machine can also be formed. A machine bed 12 comprises a first and second support surface 16, 17, which together form a support table 14. The bearing surfaces 16, 17 may be formed, for example, by a common support band 19, which is held stationary in the machine bed 12. Alternatively, this support belt 19 may also be movably driven and additionally assume a transport function.

The support belt 19 can be designed in many ways, in particular temperature-resistant materials are used. Preferred are a plurality of support bands 19 arranged side by side and form a first and second respectively divided support surface 16, 17th

Via a linear axis 21, a cutting head 22 is movable in the Y direction and forms a working region of the cutting head 22. In addition, a further linear axis can be provided, which can be moved in and against an X direction. In addition, a movable in height linear axis in the Z direction can be provided. From the cutting head 22, a cutting beam 24 is directed to a plate-shaped material 25 which rests on the support table 14 to perform a processing.

On an underside of the plate-shaped material 25, a beam-catching device 26 is provided in the processing region of the cutting head 22, which is positioned between deflection devices 28, which each limit the support surface 16, 17. The beam-catching device 26 can, for example, be movable in and against the X-direction along a guide (not shown), wherein the beam-catching device 26 is coupled to the movement of the cutting head 22, for example by its own drive or without self-propulsion.

The beam-catching device 26 has an opening 31 which is directed towards the cutting head 22 and preferably extends along the entire processing region of the cutting head 22 in the Y-direction. During the processing of the plate-shaped material 25, the cutting jet 24, which emerges from the underside of the plate-shaped material 25 after introduction of a cutting gap 32, can be caught by the opening 31 of a housing 33 of the beam-catching device 26. In the embodiment shown in Figure 1, the support belt 19 is integrally formed and is deflected at the deflection 28 down and guided over one or more deflectors 34 below the beam-catching device 26 along.

Adjacent to the beam-catching device 26, a disposal gap 37 is provided, to which a disposal device 36 is assigned. This disposal device 36 is provided adjacent to the beam-catching device 26. The disposal gap 37 is preferably located between a beam-catching device 26 and a deflection device 28 and may be provided on one or both sides of the beam-catching device 26.

In FIG. 2 a, a support device 41 is schematically enlarged, which positions the at least one support band 19 in a support plane of the first and second support surfaces 16, 17. The support device 41 comprises a plurality of individual support elements 42, which are accommodated in a guide device 43 movable up and down or height-adjustable. These support elements 42 are aligned in the X direction by particular adjustable end stops 45 to each other. The guide device 43 has, as shown in Figure 3, two mutually parallel support 44, which are arranged at a distance from each other. On an inner side of the carrier 44, sliding bodies 46 are preferably provided, between which the support elements 42 are guided. The sliding body 46 and the carrier 44 may consist of one component. The sliding bodies 46 are preferably arranged at a distance from one another in the Z direction relative to one another in order to enable a stable reception and tilt-free arrangement of the support elements 42.

The support elements 42 preferably have a rod-shaped body 48. On an upper side of the support element 42, a support surface 49 is provided, which acts on an underside of the at least one support belt 19. In particular, an edge region of the support belt 19 rests against the support surface 49 of the support element 42. For positioning the support elements 42 in an upper end position 51 for positioning the at least one support belt 19 in the support plane of the support table 14, an end position fixation 52 is provided. This end position fixation 52 comprises a holding force which acts between the sliding body 46 and the support element 42 or the support 44 and the support element 42. For example, according to Figure 3 and in particular according to Figure 4a, the support member 42 has a stopper 54 in which a holding magnet 55 is provided. When retracting the support element 42 into the end position 51, the magnet holding force acts, so that the support element 42 is held independently in the end position 51. Once the support member 42 is moved out of the end position 51 or lowered down to a planned distance, the magnetic holding force no longer acts, and the support member 42 is virtually free of forces up and down movable.

Alternatively it can be provided that the holding magnet 55 is arranged on the slider 46 or carrier 44.

This end position fixation 52 is only an example. Other mechanical catches, friction, clamping, clamping or locking mechanisms or devices may also be provided.

The rod-shaped body 48 of the support element 42 (FIGS. 4a to 4c) has end faces 58 adjacent to its guide surfaces 57, which each comprise a guide profile 59. By this guide profile 59, the adjacent end faces 58 of the support members 42 engage with each other. As a result, an extending in the X direction wall of support members 42 are provided which ensure complete support of the edge region of a support belt 19 or two mutually opposite support bands 19.

The bodies 48 of the support members 42 may preferably be formed of plastic to allow a low-friction and wear-free recording between the sliders 46 or directly between the carriers 44.

At the upper end of the support elements 42 near the support surface 49, a drive element 61 is provided, which is designed in particular as a pin-shaped or roller-shaped element. This drive element 61 cooperates with a arranged on the beam catching device 26 scenery 63 (Figure 2a). During a movement of the beam-catching device 26, for example, engages a groove-shaped recess 66 of the link 63 (Figure 2b) to the drive element 61, whereby the support member 42 undergoes a forced lifting movement when driving over the beam-catching device 26. It is only necessary for a lowering movement of the support members 42 that the holding force in the End position 51 is overcome. Following this, a quasi force-free guidance of the drive elements 61 in the recess 66 of the link 63 is provided with the exception of the own weight of the support elements 42. Shortly before reaching the end position 51, the holding force acts again, whereby a controlled transfer of the support elements 42 takes place in the end position by the recess in the link 63.

In Figure 2b, the scenery 63 is shown schematically enlarged. The groove-shaped recess 66 has at the beginning of the recess 66 a portion 65 which includes a small pitch. This small pitch serves to release the support members 42 from the Endlagenfixierung 52. Subsequently, this first section 65 merges with a low pitch into a second section 64, which comprises a larger pitch than the first section 65. As a result, a rapid downward movement of the support elements 42 is initiated. The section 64 is followed by another section 67, which runs horizontally. This horizontally extending portion 67 causes the support members 42 are held in a lower end position and the beam-catching device 26 can be passed over it. Subsequently, in turn, the portion 64 is formed, which in turn merges with the end of the recess 66 in the section 65. The course of the recess 66 in the link 63 is symmetrical, so that the same conditions in a direction of travel of the beam-catching device 26 is given in and against the X direction.

FIG. 5 shows a schematic side view of the support device 41 according to FIG. 2 a, which is equipped with a thermal expansion compensation device 81. This thermal expansion compensation device 81 comprises a fixed stop 82, which is fixed to the carrier 44 and, opposite, a displaceable stop 83, which is displaceably arranged in the X direction relative to the carrier 44. The displaceable stop 83 is positioned relative to the carrier 44 in such a way that a basic play of the supporting elements 42 is present, so that they are arranged displaceably relative to one another in the Z direction in the carrier 44. The thermal expansion compensation device 81 further comprises at least one bar 84 which extends between the fixed Stop 82 and the sliding stop 83 extends. At a stop 54 of the support members 42 facing end of the bar 84 each holding magnets or metal plates 85 are provided. These can be embedded or attached. The metal plates 85 are not connected to each other and preferably secured centrally to their own surface extension. The strip 84 has a coefficient of thermal expansion that substantially corresponds to that of the support elements 42. It is preferably provided that the support elements 42 and the bar 84 are made of the same material, in particular a plastic material. The carrier 44, however, is preferably formed of a different material, in particular steel or the like. If there is a heating of the support device 41, the bar 84 expands as well as the support members 42. By the bar 84 of the movable stop 83 is moved in the X direction with a coupling element 90, whereby it is achieved that the set basic game of the support elements 42 is maintained. The metal platelets 85, which are arranged or integrated separately on the strip 84 and on which the holding magnets 55 of the support elements 42 engage, make it impossible for the support elements 42 to become distorted due to a static friction of the holding magnets 55.

FIG. 6a is a schematic side view and FIG. 6b is a schematic sectional view of a thermal expansion compensation device

86, which acts in the Z direction. This thermal expansion compensation device 86 makes it possible to set an end position 51 of the support elements 42 relative to the carrier 44 in such a way that the support surface 49 of the support elements 42 is positioned in a predetermined plane for receiving the support belt 19. The thermal expansion compensation device 86 comprises at least one rod element 87 which comprises a substantially the same thermal expansion coefficient corresponding to the support member 42 substantially. Along the carrier 44 are preferably at predetermined intervals a plurality of rod elements

87 arranged, which engage with an upper end face on a stop 89 on the carrier 44. At the opposite end of the rod elements is an intermediate piece 88 via, for example, a plug-in or pin connection 91 coupled. The intermediate piece 88 connects the rod element 87 with a strip 84, which preferably extends parallel to the carrier 44. The intermediate piece 88 is coupled to the at least one bar 84, for example via a plug or pin connection 91. The intermediate piece 88 is formed with a different thermal expansion coefficient of these elements, wherein the intermediate piece 88 has a smaller or substantially lower coefficient of thermal expansion. The intermediate piece 88 is preferably made of steel or of the same material as the carrier 44. The strip 84, which is displaceably mounted in the Z direction relative to the carrier 44 and is preferably fastened to the carrier 44, is moved downwards when heated by the thermal expansion of the bar element 87 with respect to the change in length caused thereby. As a result, the change in length of the support element 42 can be compensated so that the length I projecting above the support 44 remains constant and the actuation element 61 assumes the predefined position. As a result of the relative movement of the at least one strip 84 in the Z direction, all the support elements 42 can be adjusted equally and in a simple manner to the changing temperature conditions.

By means of these thermal expansion compensation devices 81, 86, it is therefore possible to provide consistent working conditions for the support device, regardless of temperature fluctuations.

Furthermore, it can be provided that a thermal expansion compensation device acting in the Y direction is provided. For this purpose, the sliding body 46 can be stored according to the carrier 44 to effect a corresponding compensation of a change in thickness of the support members 42.

Due to the inventive design of the support device 41, the first and second bearing surface 16, 17 may be configured by a plurality of support belts 19, as shown in more detail in Figures 7 and 8. Such support bands 19 may be formed, for example, in the form of a brush segment band 71 according to FIGS. 7a and 7b. to be. Such a brush segment band 71 comprises a plurality of mutually arranged strips 72, each having at least one brush bundle 73 of a plurality of individual bristles 74. These individual strips 72 are arranged by a strip carrier 76 to each other, wherein the strip carrier 76 is preferably formed from at least two strand-shaped connecting elements 77 , The strand-shaped connecting elements 77 may be formed as wire ropes or the like. The support surface 49 of the support elements 42 thus engages in each case at the outer edge region on an underside of the strips 72. By the strips 72, which are inherently rigid in the transverse direction or in the Y direction, a distance running in the Y direction between the support elements 42 can be bridged and a receptacle of the plate-shaped material 25 can be ensured. A distance of two mutually adjacent support belts 19 is provided such that the edge regions rest on a common support surface 49 of the support elements 42. The brush bundles 73 may preferably be arranged on the strip 72 in such a way that a continuous screening of the brush bundles 73 is provided in the case of two adjoining brush segment bands 71. Thus, a uniform support surface 16, 17 can be created by a plurality of parallel support strips 19 with a continuous screening of the brush bundles 73rd

The deflecting devices 28, 34 are preferably adapted to the configuration of the support belt 19, in particular as a brush segment belt 71, and have peripheral depressions, which are adapted to the spacing of the brush bundles 73.

Claims

claims

1. Apparatus for receiving plate-shaped materials (25) for at least one separation process in the plate-shaped material (25) with a cutting jet device (24) of a processing machine (11),

- With a first and a second bearing surface (16, 17), which together form a support table (14) for receiving the plate-shaped material (25),

with a beam-catching device (26), which is arranged between the first and second bearing surface (16, 17),

- With a support belt (19) which is lowered during the process of the beam-catching device (26) relative to a support plane of the first and second bearing surface (16, 17) down,

- With a with the beam-catching device (26) connected to the gate (63) through which the lowering movement of the support belt (19) is controllable,

characterized,

- That the at least one support belt (19), which extends in the direction of travel of the beam-catching device (26) is designed to be inherently rigid transversely to the direction of travel,

- That at each an outer edge region of the at least one support belt (19) engages a support device (41) which consists of a plurality of support elements (42) and

- That the support elements (42) individually from an end position in which the at least one support band (19) is positioned in the support plane, can be lowered.

2. Apparatus according to claim 1, characterized in that the at least one support band (19), in each case with its outer edge region rests on a support surface (49) of the support element (42).

3. Device according to one of the preceding claims, characterized in that the support elements (42) have a rod-shaped body (48) which is received by a guide device (43) movable up and down, preferably in the traversing direction of the beam-catching device (26). extends and two parallel spaced apart support (44), which intervene support elements (42) height adjustable lead.

4. Apparatus according to claim 3, characterized in that between the carrier (44) and the support element (42) is provided a sliding body (46) or guide body.

5. Device according to one of the preceding claims, characterized in that the support element (42) in an upper end position (51) by a Endlagenfixierung (52) is held, which in particular as a magnetic holding force, clamping, friction, clamping, locking or locking force , is trained.

6. The device according to claim 3, characterized in that remote from the support surface (49) of the support element (42) the Endlagenfixierung (52) is provided which cooperates with the carrier (44) and that at a lower end of the support element (42) Stop (54) is provided which limits a lifting movement of the support element (42) in its end position (51).

7. The device according to claim 3, characterized in that on the support element (42) or the carrier (44) a holding magnet (55) is provided which fixes the support element (42) in the end position (51) on the carrier (44).

8. The device according to claim 3, characterized in that the guide device (43) has a plurality of juxtaposed support elements (42) which are arranged lying against each other, preferably lying adjacent end faces (58) of the support elements (42) each have a guide profile (59). have, which interlocks.

9. Device according to one of the preceding claims, characterized in that at the upper end of the support element (42), a drive element (61) is provided, which through the gate (63) can be actuated.

10. The device according to claim 3, characterized in that on the guide device (43) at least one acting in the X direction thermal expansion compensation device (81) is provided.

11. The device according to claim 10, characterized in that the thermal expansion compensation device (81) at one end of the carrier (44) has a fixed stop (82) and at the opposite end of the carrier (44) at least one displaceable in the X direction stop (83) having.

12. The device according to claim 10, characterized in that at one of the lower end of the support element (42) facing portion of the support (44) at least one bar (84) is provided, which is a substantially one of the support elements (42) corresponding or the same Thermal expansion coefficient and that preferably the strip (84) in each case the at least one holding magnet (55) of the respective support element (42) opposite at least one holding magnet or metal plate (85) receives.

13. The device according to claim 3, characterized in that on the guide device (43) at least one acting in the Z direction thermal expansion compensation device (86) is provided.

14. The device according to claim 13, characterized in that acting in the Z direction thermal expansion compensation device (86) comprises a pointing in the Z direction, in particular parallel to the support element (42) arranged rod element (87) which on a preferably adjustable stop (89 ) abuts a support (44) (51) and is rigidly connected to at least one along the support (44) extending and in the Z-direction in position variable bar (84).

15. Device according to one of the preceding claims, characterized in that two adjoining support belts (19) on a common support surface (49) of the support element (42) rest, wherein a plurality of support elements (42) along the edge region of the two adjacent support strips (19 ).

16. Device according to one of the preceding claims, characterized in that the at least one support band (19) is designed as a brush segment band.