DE102022201669A1 - GRINDING MACHINE AND DISC DEVICE FOR SUCH A GRINDING MACHINE - Google Patents

Abstract

The present invention relates to a disk device (5) for a sanding machine (1), in particular for a single-disc floor sanding machine, for working a joint material into parquet floors, wooden floors or the like, with a disk-shaped carrier plate (6) which has a rotary axis (7) and a ground-facing surface (10); and a plurality of wing elements (16) in the form of sheet metal strips, each of which has a fastening section (17) for fastening the plurality of wing elements (16) to the surface (10) of the carrier plate (6) facing the ground and a spatula edge ( 20) have; wherein the several wing elements (16) are arranged in the circumferential direction around the axis of rotation (7) of the carrier plate (6) to form an inner joint material area (23) in such a way that the respective spatula edges (20) of the several wing elements (16) rotate when the During operation, the carrier plate (6) performs a spatula movement to work the joint material located within the joint material area (23) into the floor to be worked and exert a force component on the joint material located within the joint material area (23) in such a way that the spatula edges (20) of the several Wing elements (16) convey the jointing material against the centrifugal force in the direction of the inside of the carrier plate (6) to enclose the jointing material within the jointing material region (23). The present invention also relates to a grinding machine (1) with such a disk device (5).

Description

The present invention relates to a sanding machine, in particular a single-disc floor sanding machine, for working a joint material into parquet floors, wooden floors or the like, and a disk device for such a sanding machine.

Such grinding machines are generally intended to process the surface of a parquet floor, wooden floor or the like, in particular to grind down these floors. For example, so-called single-disc floor grinding machines are known, which can be moved over the floor to be worked on rollers and have a grinding disk in a processing section, which can be controlled in rotation by the grinding machine via a corresponding drive.

The need for floor sanding machines is constantly growing with the increasing use of wooden floors instead of other coverings in private and business premises and the associated need for an economical and, in particular, automatically functioning sanding machine.

In addition to sanding down the floor covering, the floor often has to be processed in such a way that a suitable joint material is worked into the joints of the floor. For this purpose, in addition to the single-disc floor grinding machine, the use of another tool is required, with the insertion generally being carried out manually using a hand spatula in a complex and cost-intensive manner.

Against this background, the object of the present invention is to make the process of incorporating a joint material more cost-effective and effective.

According to the invention, this object is achieved by a plate device for a grinding machine having the features of claim 1 and by a grinding machine having the features of claim 16.

Accordingly, a disk device for a sanding machine, in particular for a single-disc floor sanding machine, for working a joint material into parquet floors, wooden floors or the like is provided with a disk-shaped carrier plate which has an axis of rotation and a surface facing the floor; and a plurality of wing elements in the form of sheet metal strips, each of which has a fastening section for fastening the plurality of wing elements to the surface of the support plate which faces the floor, and each have a spatula edge which rests at least partially on the floor to be worked during operation; wherein the several wing elements are arranged in the circumferential direction around the axis of rotation of the carrier plate to form an inner joint material area in such a way that the several wing elements when the carrier plate rotates during operation a spatula movement for working the joint material located within the joint material area into the floor to be worked and a Force component on the joint material located within the joint material area exert such that the several wing elements promote the joint material against the centrifugal force in the direction of the inside of the support plate for enclosing the joint material within the joint material area.

In addition, a grinding machine, in particular a single-disk floor grinding machine, is provided for working a joint material into parquet floors, wooden floors or the like, which has such a disk device.

The idea on which the present invention is based is to use the grinding machine, in addition to being used for grinding a floor using a grinding disk, for the process of inserting a joint material into the floor to be processed. For this purpose, a suitable insertion disc device is proposed, which can be attached to the grinding machine in a simple and inexpensive manner. As a result, it is advantageously possible to use the same grinding machine, since only the grinding disc has to be exchanged for the presently claimed insertion disc device for insertion. As a result, a cost-effective tool for the insertion is made available, since the grinding machine that is already available is used. Only the insertion plate device proposed here has to be attached to the grinding machine accordingly in order to be able to carry out the insertion process fully automatically using the grinding machine.

Advantageous refinements and developments result from the further dependent claims and the description with reference to the figures.

According to a preferred development, the carrier plate is designed as a circular disk with a central axis of rotation. As a result, the disk device is adapted to the geometry of conventional sanding disks and can be easily attached to the sanding machine and removed again after operation.

According to a further preferred development, the carrier plate has a diameter in a range from approximately 300 mm to approximately 700 mm and preferably in a range from approximately 395 mm to approximately 600 mm. The dimensions of the carrier plate are preferably designed in such a way that it can be easily integrated into the existing system of the grinding machine and covers a desired floor area during processing.

According to a further preferred development, the carrier plate has at least one fastening means in the region of the axis of rotation for a positionally stable fastening of the carrier plate to the associated grinding machine, enabling a rotary drive. The fastening means is or are preferably adapted to the fastening types of the sanding disc, so that the same fastening aids can be used.

According to a further preferred development, the carrier plate has a plurality of fastening holes for a fastening arrangement of the several wing elements that is adapted to the respective operation. By means of a specially provided hole pattern, the arrangement of the individual wing elements on the carrier plate can thus be adapted in a simple and cost-effective manner in accordance with the respective operating mode.

According to a further preferred development, the plurality of wing elements each have a fastening section which is formed with through-holes aligned with the associated fastening holes of the carrier plate. As a result, the wing elements can be fastened to the carrier plate in a simple and cost-effective manner.

According to a further preferred development, the plurality of wing elements are fastened to the carrier plate symmetrically about the axis of rotation of the carrier plate for enclosing the joint material within the joint material area. This advantageously ensures uniform incorporation of the joint material into the floor to be worked.

According to a further preferred development, four wing elements are preferably provided, which are also of uniform design. However, it is obvious to a person skilled in the art that a different number of wing elements can also be provided, and that under certain circumstances the wing elements can be designed differently from one another. However, this uniform configuration advantageously ensures a uniform incorporation process.

According to a further preferred development, depending on the diameter of the carrier plate, the several wing elements each have a length in a range from approximately 200 mm to approximately 350 mm and preferably in a range from approximately 220 mm to 300 mm. However, it is obvious to the person skilled in the art that the length of the individual wing elements can be adapted to the dimensions of the carrier plate and in particular to the diameter of the carrier plate. The length of the individual wing elements is preferably selected in such a way that they protrude as little as possible beyond the edge of the plate and form a soil material area that is as enclosed as possible around the axis of rotation of the carrier plate.

According to a further preferred development, the several wing elements each have a height in a range of approximately 55 mm to 75 mm and preferably in a range of approximately 60 mm to 70 mm. This advantageously provides a sufficiently large space below the plate, in which the joint material to be processed is located, but on the other hand the height is still sufficiently low to ensure smooth running of the machine.

According to a further preferred development, the plurality of wing elements each have a thickness in a range of approximately 0.4 mm to 0.6 mm and preferably approximately 0.5 mm. These sheet metal thicknesses have proven to be particularly preferred for the filling process to be carried out due to the resulting flexibility of the wing elements.

According to a further preferred development, the several wing elements each comprise a strip-shaped spatula section, having the above-mentioned spatula edge, with the plane of the spatula section being at an angle in a range of approximately 100° to 140° and preferably in a range of approximately 110° to 130° and more preferably from about 120° to the plane of the carrier plate towards the outside of the carrier plate. Such angles produce a correspondingly advantageous angle between the spatula edge resting on the floor surface, this angle being adapted to a manual, hand-guided spatula movement by a craftsman for an optimal insertion process.

According to a further preferred refinement, the spatula edges of the several wing elements, viewed in the direction of the respective front end face of the wing elements, are positioned relative to the plane of the carrier plate in a range of approximately 1° to 3° and preferably in a range of about 2°. This position compensates for an increased bending moment of the areas of the wing elements lying on the outside on the carrier plate compared to the areas on the inside of the carrier plate. The resulting reduction in contact pressure in the outer area of the wing elements can be advantageously compensated for by this adjustment.

According to a further preferred development, the spatula edges of the several wing elements are each at an angle in a range between 0° and 90°, preferably with respect to a central axis plane of the carrier plate, which runs approximately through the projected point of intersection of the respective spatula edge with the outer edge of the carrier plate in a range of about 45° to 70°, and more preferably in a range of about 50° to 60°. Such a position advantageously enables the rotating disk device to sweep over an acceptable area of the floor to be worked, with the joint material still being guided well along the respective wing element towards the inside of the carrier plate.

According to a further preferred development, the several wing elements each have a support plate which has a thickness in a range of approximately 0.5 mm to 0.6 mm and, starting from the carrier plate, approximately reinforces the first two thirds of the respective spatula section. If necessary, the user can add or remove the gusset depending on the particular grout being used. For example, with certain joint materials it may be advantageous to use more flexible wing elements, whereas with other joint materials a slightly stiffer wing element is desired.

The above configurations and developments can be combined with one another as desired, insofar as this makes sense. Further possible configurations, developments and implementations of the invention also include combinations of features of the invention described above or below with regard to the exemplary embodiments that are not explicitly mentioned. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the respective invention. In particular, it should be noted that, in the context of the present application, the word “a” is not intended to limit the content of the invention shown here to “exactly one” or “one”. Rather, the designation "a/an" should be interpreted as "at least one/an" unless explicitly stated otherwise.

• 1 eine perspektivische Darstellung einer Schleifmaschine;
• 2 eine perspektivische Ansicht von schräg unten einer Tellervorrichtung gemäß einem bevorzugten Ausführungsbeispiel der vorliegenden Erfindung;
• 3 eine Seitenansicht der Tellervorrichtung aus 2 gemäß einem bevorzugten Ausführungsbeispiel der vorliegenden Erfindung;
• 4 eine Unteransicht der Tellervorrichtung aus den 2 und 3 gemäß einem bevorzugten Ausführungsbeispiel der vorliegenden Erfindung; und
• 5 eine Schnittansicht entlang der Schnittlinie B-B aus 4 gemäß einem bevorzugten Ausführungsbeispiel der vorliegenden Erfindung.

The present invention is explained in more detail below with reference to the exemplary embodiments given in the schematic figures. They show:

• 1 a perspective view of a grinding machine;
• 2 a perspective view obliquely from below of a plate device according to a preferred embodiment of the present invention;
• 3 a side view of the plate device 2 according to a preferred embodiment of the present invention;
• 4 a bottom view of the plate device from the 2 and 3 according to a preferred embodiment of the present invention; and
• 5 a sectional view along the section line BB 4 according to a preferred embodiment of the present invention.

The accompanying figures are intended to provide a further understanding of embodiments of the invention. They illustrate embodiments and, together with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the foregoing advantages will become apparent by reference to the drawings. The elements of the drawings are not necessarily shown to scale with respect to one another.

In the figures of the drawings, the same elements, features and components that are functionally the same and have the same effect are provided with the same reference symbols unless otherwise stated.

1 12 illustrates a perspective view of a single-disc floor grinder 1 according to an embodiment of the present invention. This grinding machine, shown as an example, can be moved by a user over the surface of the floor to be processed by means of rollers 2 . Furthermore, the grinding machine 1 has an electric drive, not shown, for a rotary rotary movement of a 1 Also not visible plate device, wherein the plate device is accommodated in an associated housing 3 of the grinding machine 1. In the usual use of the grinding machine 1 for grinding down the floor to be processed, the plate device is designed as a plate with a special grinding wheel. In the present case, the same grinding machine 1 should preferably also be used for working a joint material into the joints of the floor to be processed and therefore be convertible in such a way that the aforesaid disk with grinding wheel is interchangeable with a disk device for grouting according to the present invention, which disk device for incorporating a grout will be described in more detail below.

In the 2 until 5 is a preferred embodiment of a plate device 5 for insertion in different views as an example, wherein 2 a perspective view from below, 3 a side view and 4 a bottom view of the plate device 5 illustrate.

As can be seen in the figures, the plate device 5 according to the present exemplary embodiment preferably has a disc-shaped carrier plate 6 which is in particular designed as a circular disc with a central axis of rotation 7 . A through hole 8 is preferably provided in the carrier plate, running through the axis of rotation 7 , which can be coupled to an axis of rotation of the electric rotary drive of the grinding machine 1 . Furthermore, first fastening holes 9 are preferably provided in the area of the central through hole 8 , which are used to attach the plate device 5 to the grinding machine 1 . Furthermore, on the surface 11 facing away from the floor, the carrier plate 6 has, for example, an annular collar section 12 which is used for a preferably positive and/or non-positive connection of the plate device 5 to a complementarily designed fastening section of the grinding machine 1 . As a result, the disk device 5 can be mounted on the grinding machine 1 in a stable position.

Furthermore, the carrier plate 6 has second fastening holes 14, which can be provided in different hole patterns and are used to fasten associated wing elements, which will be described in more detail below.

The carrier plate 6 preferably has a diameter of approximately 395 mm to approximately 600 mm. However, it is obvious to a person skilled in the art that other geometries are also possible, for example the diameter of the carrier plate 6 can also be in a range from approximately 300 mm to approximately 700 mm. The diameter of the carrier plate 6 is preferably adapted accordingly to the grinding machine 1 to be used in each case and to the respective application.

Furthermore, the disk device 5 has a plurality of wing elements 16 which each preferably have a fastening section 17 and a spatula section 19 . As can also be seen in the figures, the plate device 5 according to the 2 until 4 The exemplary embodiment shown has four uniformly designed wing elements 16 which are preferably arranged symmetrically around the axis of rotation 7 in such a way that the respective spatula sections 19 define an inner, almost closed joint material area 23 around the axis of rotation 7 . However, it is obvious to a person skilled in the art that a number other than four wing elements 16 can also be provided, for example three, five or more.

The plurality of wing elements 16 can preferably be fastened to the carrier plate 6 via the fastening section 17 by means of corresponding fastening means. 5 shows a sectional view along the section line BB 4 . As can be seen from this, riveted connections or threaded screws 22, for example, serve as fastening means, which project through through-holes 18 in the fastening section 17 of the wing elements 16, which are aligned with associated second fastening holes 14 of the carrier plate 6, and can be screwed, riveted or the like in these. The carrier plate 6 preferably comprises different hole patterns at the second fastening holes 14 such that the wing elements 16 can be mounted on the carrier plate 6 in different orientations. As a result, the wing elements 16 can be mounted and aligned in a manner adapted to the respective application, or differently configured wing elements can be used.

Each wing element 16 is preferably also formed with a spatula section 19 in the form of a sheet metal strip, which in each case has an associated spatula edge 20 which rests on the floor to be worked during operation. As shown in particular in the sectional view 5 As can be seen, each spatula section 19 of the wing elements 16 is set at a predetermined angle relative to the respective fastening section 17 . In other words, the plane of the spatula section 19 is at an angle preferably in a range of approximately 100° to 140° and more preferably in a range of approximately 110° to 130° and even more preferably at an angle of approximately 120 ° relative to the plane of the support plate 6 and thus relative to the plane of the respective attachment portions 17 in the direction of the outside of the support plate 6 inclined. This angle is in 5 illustrated as an example of an angle of attack α of 120°. An angle of attack α of approximately 120° accordingly creates an angle between the spatula edge 20 of the spatula section 19 and the floor surface to be treated of approximately 60°. This advantageously corresponds approximately to the spatula angle manually by a craftsman with a hand-held spatula would be adjusted automatically via his wrist.

Depending on the diameter of the respective carrier plate 6, the several wing elements 16 preferably have a length in a range from approximately 200 mm to approximately 350 mm, more preferably in a range from approximately 220 mm to 300 mm and even more preferably a length of in about 220 mm. The respective height of the individual spatula sections 19 is preferably in a range from approximately 55 mm to approximately 75 mm, and more preferably in a range from approximately 60 mm to approximately 70 mm. The sheet metal thickness of the individual wing elements 16 is in particular in a range from approximately 0.4 mm to approximately 0.6 mm and more preferably has a thickness of approximately 0.5 mm.

The height of the wings is preferably selected in such a way that on the one hand a sufficiently large space is provided below the carrier plate 6, in which the joint material to be processed is located, but on the other hand it is not too high so that the plate device 5 does not run unsteadily below the Grinding machine 1 would experience.

The individual wing elements 16 can, for example, have uniformly designed end faces or, as is particularly the case in 4 is shown, have different contours. The direction of rotation of the plate device 5 in operation when installed in the associated grinding machine 1 is in the 2 until 4 indicated by the arrows shown in each case. In the exemplary embodiment illustrated in the figures, the front end faces of the spatula sections 19 of the wing elements 16 in the circumferential direction are, for example, designed with a rounded corner area and the rear end faces in the circumferential direction with a beveled corner area. However, it is obvious to a person skilled in the art that the respective end faces can also be designed in the same way.

An advantageous embodiment of the geometries of the wing elements 16 provides that the individual wing elements 16 do not or just not protrude beyond the outer edge of the carrier plate 6 during operation, or as in particular in 4 illustrated, project as little as possible beyond the end of one's own nose.

The front and thus outer areas of the spatula sections 19 of the respective wing elements 16 in the direction of rotation of the carrier plate 6 experience a higher bending moment during rotation during operation compared to the areas of the spatula sections 19 that are further inward with respect to the axis of rotation 7 of the carrier plate 6. This increased bending moment in In order to compensate for the operation accordingly and preferably to achieve a contact pressure that is uniform over the spatula edge 20 on the floor to be worked, each spatula edge 20 of the respective spatula section 19 of the respective wing elements 16 has, in the direction of the respective front end faces of the wing elements 16, an attitude relative to the plane of the carrier plate 6, for example in a range of about 1° to 3° and preferably about 2°. This angle of attack is in 3 marked as angle β as an example. The angle of attack β is preferably adapted in a suitable manner to the material used in each case and/or the dimensions used in each case of the wing elements 16 and the respective deformation associated therewith. Such an employment can compensate for the bending moment acting differently on the spatula section 19 in the most suitable manner possible and a uniform incorporation of the joint material over the entire longitudinal extension of the spatula edges 20 of the wing elements 16 can be accomplished.

The individual wing elements 16 can, for example, also be reinforced with a respectively assigned support plate, which is not shown in the figures. Such a support plate is attached, for example, as an additional plate to the carrier plate 6 using the same fastening means, the respective support plates having a thickness of, for example, approximately 0.5 mm to approximately 0.6 mm and, starting from the carrier plate 6, up to approximately two Third of the height of the wing elements 16 run. These support plates preferably have the same edging as the wing elements 16 and can preferably be added or removed by the user if required, adapted to the respective application. This can be advantageous when different joint materials are incorporated, since, depending on the joint material, it is possible to vary between a more flexible wing element 16 without a support plate and a more rigid wing element 16 with a support plate. More flexible wing elements 16 can advantageously avoid scratches on the floor surface to be worked, for example with certain joint materials.

A steel sheet, preferably stainless steel, is provided as the material for the wing elements 16 and/or support plates, which has good reaction properties with, for example, the tannic acids of the parquet to be processed that are dissolved by the joint material, so that any discoloration in the floor to be processed can be avoided.

The following is with reference to 4 a preferred orientation and arrangement of the individual wing elements 16 on the carrier plate 6 discussed. As an example, the in 4 shown arrangement with four similar wing elements 16 assumed. However, it is obvious to a person skilled in the art that a different orientation and/or arrangement of the wing elements 16 is also conceivable.

As in 4 can be seen, the wing elements 16 according to this exemplary embodiment are opposite to one in 4 center axis plane of the support plate 6 shown in dashed lines, which preferably runs approximately through the projected point of intersection of the respective spatula edge 20 with the outer edge of the support plate 6, at an angle in a range between 0° and 90°, preferably in a range of approximately 45° up to about 70° and more preferably in a range from about 50° to about 60°. In 4 this angle of attack γ is provided with approximately 50°, for example. With such an adjustment within the stated ranges, on the one hand an acceptable floor area is swept over by the spatula edges 20 when rotating the plate device 5 and on the other hand the joint material along the spatula section 19 when the plate device 5 rotates in the direction of rotation shown by the arrow counter to the centrifugal force in direction of the inner area is sufficiently promoted. As a result, when the grinding machine 1 moves, the jointing material below the disk device 5 can be guided over the floor surface to be processed in the inner jointing material area 23 formed by the wing elements 16 without exiting the jointing material area 23 .

The arrangement of the individual wing elements 16 is therefore preferably selected in such a way that they form an inner joint material area 23 such that during operation the joint material to be incorporated remains in this joint material area 23 when the plate device 5 rotates and is not conveyed in the direction of the outside of the plate device 5.

The mode of operation of the grinding machine 1 having a plate device 5 according to the present invention is explained in more detail below with reference to the figures. In general, the grinding machine 1 is first used to grind down the floor to be worked using a suitable grinding wheel. The grinding wheel is then removed from the grinding machine 1 and the disc device 5 according to the present invention is mounted in the housing 3 for receiving the disc device 5 by means of the fastening means 8, 9 and/or 12 provided in such a way that the rotary drive of the grinding machine 1 uses the disc device 5 for drives a rotation of the same. As already indicated, the direction of rotation of the disk device 5 is shown as an example in the figures by means of the arrows.

Appropriate jointing material is placed under the carrier plate 6 of the disk device 5 in the inner jointing material area 23 defined by the wing elements 16 on the floor to be processed or the grinding machine 1 is placed over the jointing material on the floor. The grinding machine 1 is then put into operation so that the disk device 5 is rotated in the direction of the arrows shown in the figures, the grinding machine 1 preferably being able to be moved over the floor to be worked by means of a handle and corresponding rollers 2 .

Due to the rotation of the carrier plate 6 in the direction of the arrow, the spatula edges 20 of the spatula sections 19 of the respective wing elements 16 perform a spatula movement in such a way that the joint material in the joint material area 23 is worked into the joints of the floor to be worked by means of the spatula edges 20 and the joint material is pushed against the Centrifugal force is guided along the spatula sections 19 in the direction of the inside of the support plate 6. As a result, the jointing material to be incorporated remains within the jointing material area 23 even when the grinding machine 1 is moved over the floor to be processed and is not conveyed outside of the disk device 5 . Consequently, the jointing material is carried along below the plate device 5 over the surface to be processed during a process of the grinding machine 1 and is evenly incorporated into the floor to be processed by the executed spatula movements.

Furthermore, as already explained above, the user can also provide appropriate support plates on the wing elements, adapted to the respective application, in order to further optimize the insertion process.

Although the present invention has been described above on the basis of preferred exemplary embodiments, it is not limited thereto but can be modified in many different ways. It is obvious to a person skilled in the art that the exemplary embodiments described above can be combined with one another as desired.

For example, various disk devices can be available, with a suitable disk device being selected and mounted on the grinding machine in each case depending on the floor to be processed and the joint material to be used.

Reference List

1

Grinding machine/single-disc floor grinding machine

2

roll

3

Housing for accommodating the plate device

5

plate device

6

backing plate

7

axis of rotation

8th

central through hole

9

first mounting holes

10

ground-facing surface

11

surface facing away from the ground

12

collar section

14

second mounting holes

16

wing elements

17

attachment sections

18

through holes

19

spatula sections

20

spatula edges

22

screws

23

grout area

a

angle of attack

β

angle of attack

g

angle of attack

Claims (16)

Disc device (5) for a sanding machine (1), in particular for a single-disc floor sanding machine, for working a joint material into parquet floors, wooden floors or the like, with: a disk-shaped support plate (6) having an axis of rotation (7) and a bottom-facing surface (10); and several wing elements (16) in the form of sheet metal strips, each of which has a fastening section (17) for fastening the several wing elements (16) to the floor-facing surface (10) of the carrier plate (6) and each has a spatula edge (20 ) exhibit; wherein the plurality of wing elements (16) are arranged in the circumferential direction around the axis of rotation (7) of the carrier plate (6) to form an inner joint material region (23) in such a way that the plurality of wing elements (16) rotate during operation of the carrier plate (6). a spatula movement to work the joint material located within the joint material area (23) into the floor to be worked and a force component on the joint material located within the joint material area (23) in such a way that the several wing elements (16) move the joint material against the centrifugal force in the direction on the inside of the backing plate (6) to enclose the joint material within the joint material region (23). Plate device (5) after claim 1 , characterized in that the carrier plate (6) is designed as a circular disc with a central axis of rotation (7). Plate device (5) after claim 1 or 2 , characterized in that the carrier plate (6) has a diameter in a range from about 300 mm to about 700 mm and preferably in a range from about 395 mm to about 600 mm. Plate device (5) according to at least one of the preceding claims, characterized in that the carrier plate (6) in the region of the axis of rotation (7) has at least one fastening means (8; 9; 12) for a positionally stable fastening of the carrier plate (6) enabling a rotary drive. on the associated grinding machine (1). Plate device (5) according to at least one of the preceding claims, characterized in that the carrier plate (6) has a plurality of fastening holes (14) for a fastening arrangement of the plurality of wing elements (16) adapted to the respective operation. Plate device (5) after claim 5 , characterized in that the plurality of wing elements (16) each have a fastening section (17) which is formed in each case with associated fastening holes (14) of the carrier plate (6) through holes (18) aligned. Plate device (5) according to at least one of the preceding claims, characterized in that the plurality of wing elements (16) are arranged symmetrically about the axis of rotation (7) of the carrier plate (6) for enclosing the joint material within the joint material region (23) on the carrier plate (6). are attached. Plate device (5) according to at least one of the preceding claims, characterized in that preferably four wing elements (16) are provided and are of uniform design. Plate device (5) according to at least one of the preceding claims, characterized in that the several wing elements (16), depending on the diameter of the carrier plate (6) and the number and arrangement of the wing elements (16), each have a length in a range of approximately 200 mm to about 350 mm and preferably in a range of about 220 mm to 300 mm. Plate device (5) according to at least one of the preceding claims, characterized in that the plurality of wing elements (16) each have a height in a range of approximately 55 mm to 75 mm and preferably in a range of approximately 60 mm to 70 mm. Plate device (5) according to at least one of the preceding claims, characterized in that the plurality of wing elements (16) each have a thickness in a range of approximately 0.4 mm to 0.6 mm and preferably approximately 0.5 mm. Plate device (5) according to at least one of the preceding claims, characterized in that the plurality of wing elements (16) each comprise a strip-shaped spatula section (19) having the spatula edge (20), the plane of the spatula section (19) being at an angle in a range of approximately 100° to 140° and preferably in a range of approximately 110° to 130° and more preferably approximately 120° to the plane of the carrier plate (6) towards the outside of the carrier plate (6). is trained. Plate device (5) according to at least one of the preceding claims, characterized in that the spatula edges (20) of the plurality of wing elements (16), viewed in the direction of the respective front end faces of the wing elements (16), are positioned relative to the plane of the carrier plate (6) in a range of about 1° to 3° and preferably about 2°. Plate device (5) according to at least one of the preceding claims, characterized in that the spatula edges (20) of the plurality of wing elements (16) are each opposite a central axis plane of the carrier plate (6) which extends approximately through the projected point of intersection of the respective spatula edge (20) with the outer edge of the carrier plate (6), rotated at an angle in a range between 0° and 90°, preferably in a range of approximately 45° to 70° and more preferably in a range of approximately 50° to 60° are arranged. Plate device (5) according to at least one of the preceding claims, characterized in that the plurality of wing elements (16) each have a support plate which, for example, has a thickness in a range of approximately 0.5 mm to 0.6 mm and, for example, from Support plate (6) starting approximately the first two thirds of the respective spatula section (19) reinforced. Grinding machine (1), in particular a single-disc floor grinding machine, for working a joint material into parquet floors, wooden floors or the like, which has a disk device (5) according to at least one of the preceding claims.

Images