PRESSING TOOL, WORKPIECE, METHOD FOR PRODUCING A PRESSING TOOL, AND METHOD FOR PRODUCING A WORKPIECE

Abstract

The disclosure relates to a pressing tool which has a structured pressing surface which is provided for producing, by pressing, a workpiece having a structured surface. At least one region of the pressing surface has a peg-shaped and/or rod-shaped structure with pegs and/or rods protruding from the pressing surface. The disclosure also relates to a workpiece which comprises a structured surface. At least one region of the structured surface comprises crater-shaped recesses in the structured surface, in order to confer a relatively matte impression on this region.

Claims

1. A pressing tool comprising a structured pressing surface which is provided for producing, by pressing a workpiece having a structured surface, wherein at least one region of the pressing surface has a peg-shaped structure with pegs protruding from the pressing surface.

2. The pressing tool as claimed in claim 1, wherein the peg-shaped structure is an irregularly embodied peg-shaped structure, or the pegs and/or rods are embodied without undercuts.

3. The pressing tool as claimed in claim 1, wherein the pegs have a height (h) of 1 μm to 50 μm, the density per area of the pegs amounts to between 109 per cm2 and 6.25 times 104 per cm2, the height (h) of the pegs is larger than the maximum diameter (d1) of their cross-sectional surface.

4. The pressing tool as claimed in 1, wherein the pegs are configured so as to be conical, pyramid-shaped, or cuboid-shaped, and/or the parts of the pegs facing away from the pressing surface (52) are rounded.

5. The pressing tool according to claim 1, wherein the pressing surface has a base structure which is at least indirectly superimposed by the peg-shaped structure in the region.

6. The pressing tool according to claim 1, wherein one of: the pressing surface comprises a base structure, which is superimposed by the peg-shaped structure in the region, and a wear layer is arranged on the base structure having the superimposed peg-shaped structure, or the pressing surface comprises a base structure and a wear layer which is arranged on the base structure and in which the region having the peg-shaped structure (54) is arranged.

7. The pressing tool according to claim 1, wherein multiple regions of the pressing surface have a peg-shaped structure with pegs protruding from the pressing surface which differ in their nature such that the regions appear differently matte.

8. A method for producing a pressing tool according to claim 1, comprising controlling a laser such that it removes material from the pressing surface in order to produce the region of the pressing surface having the peg-shaped structure.

9. The method for producing a pressing tool according to claim 8, wherein the pressing surface comprises a base structure which is at least indirectly superimposed by the peg-shaped structure in the region, the method comprising controlling the laser depending on image data assigned to the base structure.

10. A workpiece, comprising a structured surface, wherein at least one region of the structured surface has crater-shaped recesses in the structured surface, in order to confer a matte impression on the region.

11. The workpiece according to claim 10, wherein the crater-shaped recesses are irregularly shaped crater-shaped recesses.

12. The workpiece according to claim 10, wherein the crater-shaped recesses have a depth of 1 μm to 50 μm, or the density of the crater-shaped recesses amounts to between 10.sup.9 per cm.sup.2 and 6.25 times 10.sup.4 per cm.sup.2, or the depth of the recesses is larger than the maximum diameter of their cross-sectional surface.

13. The workpiece according to claim 10, wherein the crater-shaped recesses are embodied so as to be peg-shaped, in particular, one of conical, cone-shaped, pyramid-shaped, truncated pyramid-shaped, cuboid-shaped, or comprise rounded surfaces.

14. The workpiece according to claim 10, wherein the surface has a base structure which is superimposed by the crater-shaped recesses in the region, or that multiple regions of the surface have crater-shaped recesses which differ in their nature, such that the regions appear differently matte.

15. A method for producing a workpiece according to claim 10 by means of a pressing tool, pressing a surface of a base workpiece with the pressing surface of the pressing tool in order to produce the workpiece having the structured surface.

16. A pressing tool comprising a structured pressing surface which is provided for producing a workpiece, the workpiece having a structured surface, wherein at least one region of the pressing surface has a rod-shaped structure with a rod protruding from the pressing surface.

17. The pressing tool as claimed in claim 16, further comprising a plurality of rods protruding from the pressing surface.

18. The pressing tool as claimed in claim 16, wherein the rod-shaped structure is irregularly configured, or the rod is embodied without undercuts.

19. The pressing tool as claimed in claim 16, wherein the rod is configured to be conical-shaped, pyramid-shaped, or cuboid-shaped.

20. The pressing tool as claimed in claim 16, wherein the workpiece is a floor tile.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Exemplary embodiments of the disclosure are shown in the enclosed schematic drawings. The figures show

[0037] FIG. 1 a material board having a structured decor surface,

[0038] FIG. 2 a cutout from the decor surface with a region comprising crater-shaped recesses,

[0039] FIG. 3 embodiments of the crater-shaped recesses,

[0040] FIG. 4 a base material board,

[0041] FIG. 5 a pressing tool with a structured pressing surface,

[0042] FIG. 6 a cutout of the pressing surface with a peg-shaped and/or rod-shaped structured region,

[0043] FIG. 7 embodiments of the peg-shaped and/or rod-shaped structuring, and

[0044] FIG. 8 a device for producing the pressing tool.

DETAILED DESCRIPTION

[0045] FIG. 1 shows a material board 1, which comprises a structured surface, in particular a structured decor surface 2, as an example of a workpiece having a structured surface. The decor surface 2 can be unicolored or multicolored and/or be provided with a pattern.

[0046] The material board 1 comprises, for example, a carrier 5 with the decor surface 2. The carrier 5 is, e.g., made of synthetic resin or of a natural material, such as wood. The carrier 5, e.g., is a medium-density fiberboard or a chipboard. The material board 1 comprises, for example, a paper soaked in a synthetic resin.

[0047] The decor surface 2 comprises a region 3 which is provided with crater-shaped recesses 4. A cutout of the decor surface 2, which shows this region 3, is shown in a top view in FIG. 2. FIG. 3 shows a sectional view of multiple embodiments of the crater-shaped recesses 4. The crater-shaped recesses 4 are preferably peg-shaped and/or rod-shaped, in particular conical, pyramid-shaped, truncated pyramid-shaped, cone-shaped, cuboid-shaped and/or have, in particular, rounded surfaces.

[0048] An example of a crater-shaped recess having a rounded surface is provided with reference number 4a in FIG. 3. An example of a truncated pyramid-shaped recess is provided with reference number 4b in FIG. 3. An example of a cuboid-shaped recess is provided with reference number 4c in FIG. 3. An example of a cone-shaped or conical recess is provided with reference number 4d in FIG. 3.

[0049] The crater-shaped recesses 4 provide the decor surface 2 with a more matte appearance in this region 3.

[0050] The decor surface 2 may be smooth for the most part and structured only in the region 3.

[0051] In the case of the present exemplary embodiment, the decor surface 2 has a base structure 6. In the region 3, the crater-shaped recesses 4 superimpose this base structure 6. The base structure 6 is, for example, assigned to a natural material, such as wood or natural stone.

[0052] The decor surface 2 may have precisely one region 3 having the crater-shaped recesses 4 or multiple regions 3 having crater-shaped recesses 4. The crater-shaped recesses 4 of the different regions 3 can differ, such that the corresponding regions 3 appear differently matte. Different degrees of mattness can, for example, be achieved by the depth t of the crater-shaped recesses 4, by different densities of the crater-shaped recesses 4 per area of the corresponding region 3 or by their arrangement. Preferably, the crater-shaped recesses 4 are arranged irregularly.

[0053] The crater-shaped recesses of the decor surface 2, for example, comprise a depth t of 1 μm to 50 μm.

[0054] The density of the crater-shaped recesses per area amounts, for example, to between 10.sup.9 per cm.sup.2 and 6.25 times 10.sup.4 per cm.sup.2.

[0055] The depth t of the recesses is in particular larger than the maximum diameter d2 of their cross-sectional surfaces.

[0056] The material board 1 may, for example, be produced using a base material board 41 shown in FIG. 4. The base material board 41 comprises a surface 42. The structured decor surface 2 can be produced, for example, by pressing the surface 42 with a structured pressing surface of a pressing tool, which, for example, is an endless belt or an embossing roller, whereby the material board 1 is created.

[0057] FIG. 5 shows a pressing tool in the form of a pressing plate 51 which comprises a structured pressing surface 52. The pressing plate 51 is, in particular, provided for producing the material board 1.

[0058] The pressing surface 52 comprises a region 53 which has a peg-shaped and/or rod-shaped structure 54 with pegs and/or rods protruding from the pressing surface 52. A cutout of the pressing surface 52, which shows this region 53, is shown in a top view in FIG. 6. FIG. 7 shows a sectional view of multiple embodiments of the pegs and/or rods. The pegs and/or rods are embodied so as to be, for example, conical, pyramid-shaped, truncated pyramid-shaped, cone-shaped and/or cuboid-shaped. The parts of the pegs and/or rods facing away from the pressing surface 52 can be rounded.

[0059] An example of pegs and/or rods having rounded surfaces is provided with reference number 54a in FIG. 7. An example of pyramid-shaped pegs and/or rods is provided with reference number 54b in FIG. 7. An example of cuboid-shaped pegs and/or rods is provided with reference number 54c in FIG. 7. An example of conical or cone-shaped pegs and/or rods is provided with reference number 54d in FIG. 7.

[0060] The pressing surface 52 may be smooth for the most part and structured only in the region 53.

[0061] In the case of the present exemplary embodiment, the pressing surface 52 has a base structure 56 which is assigned to the base structure 6 of the decor surface 2. In the region 53, the peg-shaped and/or rod-shaped structure 54 superimposes this base structure 56.

[0062] The pressing surface 52 may have precisely one region 53 having the peg-shaped and/or rod-shaped structure 54 or multiple regions 53 having a peg-shaped and/or rod-shaped structure 54. The peg-shaped and/or rod-shaped structures 54 of the different regions 54 can differ from one another. For example, the heights h of the pegs and/or rods of the peg-shaped and/or rod-shaped structures 54 or their densities per area of the corresponding region 53 can differ or by their arrangement. Preferably, the pegs and/or rods are arranged irregularly.

[0063] The pegs and/or rods for example have a height h of 1 μm to 50 μm.

[0064] The density of the pegs and/or rods per area amounts, for example, to between 10.sup.9 per cm.sup.2 and 6.25 times 10.sup.4 per cm.sup.2.

[0065] The height h of the pegs and/or rods is preferably larger than the maximum diameter d1 of their cross-sectional surface.

[0066] The pegs and/or rods are, in particular, embodied without undercuts.

[0067] In the case of the present exemplary embodiment, the pressing plate 51 comprises a wear layer 55, in particular made of metal, which is arranged above the base structure 54.

[0068] The pressing tool 51 can be embodied such that the base structure 56 is superimposed by the peg-shaped and/or rod-shaped structure 54 in the region 53, and a wear layer 55 is arranged on the base structure 56 having the superimposed peg-shaped and/or rod-shaped structure 54.

[0069] The pressing tool 51 can be embodied such that the wear layer 55 is arranged on the base structure 56, in which the region 53 having the peg-shaped and/or rod-shaped structure 54 is arranged.

[0070] FIG. 8 shows a top view of an example of a device 81 which is configured to produce at least the region 53 of the pressing surface 52. The base structure 56 of the pressing surface 52 can also be produced by this device 81 or, for example, by means of etching according to the teaching of DE 10 2007 055 053 A1.

[0071] In the case of the present exemplary embodiment, the device 81 shown in FIG. 8 comprises a support table 82 which has a support surface 84 made of multiple individual planar surfaces 83. To produce the pressing plate 51, it is placed on the support surface 82 such that the pressing surface 52 faces away from the support surface 84.

[0072] In the case of the present exemplary embodiment, the device 81 comprises an electronic controller 85 which controls the operation of the device 81.

[0073] In the case of the present exemplary embodiment, suction orifices, which draw the pressing plate 51 onto the planar surfaces 83 by means of a vacuum pump of the device 81, said vacuum pump not being shown and controlled by the electronic controller 85, are formed in the planar surfaces 83, whereby the pressing plate 51 is fixed on the support surface 84.

[0074] In the case of the present exemplary embodiment, the device 81 comprises guide rails 86 which are arranged in longitudinal direction of the support surface 84 and next to the support surface 84.

[0075] The device 81, in particular, comprises sliding guides 87 which are mounted so as to be displaceable along the guide rails 86.

[0076] The device 81 comprises transverse rails 88 which are in particular directed transversely to the support surface 84 and which are each connected to the sliding guides 87 on their ends.

[0077] The device 81 further comprises a laser device 95 which is mounted so as to be displaceable along the transverse rails 89. The laser device 95 comprises a laser 97 which can be controlled by the electronic controller 85.

[0078] In the case of the present exemplary embodiment, the device 81 comprises an electrical drive 89 which is configured to move the sliding guides 87 and thus the transverse rails 88 and/or the laser device 95 along the guide rails 86 and thus in longitudinal direction of the support surface 84, controlled by the electronic controller 85.

[0079] In the case of the present exemplary embodiment, the device 81 comprises a further electrical drive 96 which is configured to move the laser device 95 along the transverse rails 88 and thus transversely to the support surface 84, controlled by the electronic controller 85.

[0080] The device 81 is embodied such that the pressing plate 51 fixed on the support surface 84 is arranged between the support surface 84 and the laser device 95 and/or the laser 97.

[0081] Thus, it is possible that the laser 97 is moved to the desired position relative to the pressing surface 52 to be processed, such that the laser 97 can process it as desired, controlled by the electronic controller 85.

[0082] In the case of the present exemplary embodiment, the device 81 is configured to process the pressing plate 52 fixed on the support surface 84 in that the electronic controller 85 controls the laser 97 such that it provides the region 53 of the pressing surface with the peg-shaped and/or rod-shaped structure 54.