Method for manufacturing a mold segment part, mold segment part, vulcanization mold and vehicle pneumatic tire

Abstract

A method for manufacturing a mold segment component for a vulcanizing mold for a vehicle pneumatic tire to form at least one tread block or a generally curved block structured area of ​​the tread having an outer tread surface, the mold segment component being constructed by means of an additive method, such as selective laser melting, by applying and melting metal powder layer by layer on a flat construction plate (10) together with a bottom portion (7b) and molding elements, such as sheets (4) and / or microsheets (11) and / or ribs and / or rib areas, wherein the molding elements define or surround molding surface elements (12) of the outer surface (12a) of adjacent areas of the bottom portion (7b) having the outer tread surface. During the additive manufacturing process, the molded surface element (12) is correspondingly constructed with a uniform flat outer surface (12a) or with two to three outer surfaces (12a) extending in a stepped manner, wherein all the outer surfaces (12a) of the molded surface element (12) extend parallel to each other and the reference construction plate (10) is located on planes at different levels, such that the arrangement of the outer surfaces (12a) of the molded surface element (12) relative to each other is largely approximating the curvature of the area to be formed on the outer surface of the tread.

Description

Technical Field

[0001] The present invention relates to a method for manufacturing a mold segment component for a vulcanizing mold used in a pneumatic tire for a vehicle to form at least one tread block or a generally curved block-structured area of ​​the tread having an outer tread surface. The mold segment component is constructed by means of an additive method (such as selective laser melting) by applying and melting metal powder layer by layer flatly on a flat construction plate together with a bottom portion and molding elements (such as flakes and / or microflakes and / or ribs and / or rib areas), wherein the molding elements define or surround molding surface elements of adjacent areas forming the outer tread surface.

[0002] The present invention also relates to a mold section component of a vulcanizing mold for use in a vehicle pneumatic tire to form at least one tread block or a generally curved block-structured area of ​​the tread having an outer tread surface. The mold section component is constructed by means of an additive method (such as selective laser melting) by applying and melting metal powder layer by layer flatly on a flat construction plate together with a bottom portion and molding elements (such as flakes and / or microflakes and / or ribs and / or rib areas), wherein the molding elements define or surround molding surface elements of adjacent areas forming the outer tread surface.

[0003] The present invention also relates to a vehicle pneumatic tire having a generally curved tread with tread grooves, the tread being divided into tread blocks and / or block structures, wherein there are tread blocks and / or block structures with transverse cuts and / or micro-cuts, wherein positive surface elements are formed between cuts or micro-cuts or between cuts and micro-cuts or between cuts, micro-cuts and grooves. Background Technology

[0004] The vulcanization of pneumatic tires for vehicles takes place in a hot press, where the tire blank is placed in a vulcanization mold and vulcanized under pressure and heat. The tread of the tire is formed and heated using a mold section ring consisting of multiple mold segments, in which the tread pattern is also formed, as the mold sections have molded elements, such as ribs and tabs, on their mold sides facing the mold cavity. Traditionally, the mold section ring is made of steel alloy or aluminum alloy by casting followed by machining, or by machining alone.

[0005] It is also known to manufacture mold segment components or mold segments using additive manufacturing methods, particularly selective laser melting. For example, it is known from EP 2 379 315 B1 that a 0.25 mm to 3.00 mm thick liner for the mold segment, together with the molding elements forming the tread pattern, is integrally manufactured by laser sintering. It is known from EP 2 399 695A1 that a complete mold segment having elements forming the tread pattern is manufactured by selective laser melting. DE 10 2018 202 603A1 discloses a mold segment component that includes the concave contour of the tread and is manufactured by a generative manufacturing method, such as selective laser melting. The mold segment component is matingly connected to a material serving as a support element for the segment ridge, thereby obtaining a hybrid mold segment.

[0006] In additive manufacturing of mold sections or mold section components, the molding surface is constructed according to a pre-defined and required curvature of the tread of a pneumatic tire. This molding surface forms the outer surface (positive surface) of the tread during vulcanization. In additive manufacturing, after applying metal powder layer by layer and subsequently melting the metal powder, the curvature is formed by correspondingly offsetting each successively applied layer. This results in numerous tiny steps forming on the inner surface or on the molding surface elements. Post-processing for smoothing, especially between thin or micro-thin sheets (where small molding surface elements exist), is difficult and is therefore omitted. If the tire is vulcanized in such a mold, the tread has an unevenly structured and visually unattractive positive surface. Summary of the Invention

[0007] The purpose of this invention is to avoid the formation of such steps, thereby ensuring that the outer surface of the tread of the vulcanized tire is largely free of defects, especially in the tread, micro-cuts, and the planar areas between the tread, micro-cuts, and grooves.

[0008] Regarding this method, the proposed objective is achieved according to the invention by additively constructing the molded surface elements accordingly into a uniform flat plane or by additively constructing a plurality of flat planes that extend in a stepped manner relative to each other with a horizontal difference of at least 100 μm, wherein all the molded surface elements or their planes extend parallel to each other and the reference construction plate is located on planes at different levels, such that the arrangement of these molded surface elements or their planes relative to each other largely approximates the curvature of the area to be molded on the outer surface of the tread.

[0009] The mold section component according to the invention is characterized in that the molded surface elements are correspondingly uniform flat planes or consist of a plurality of flat planes that extend in a stepped manner to each other and have a horizontal difference of at least 100 μm, wherein all the molded surface elements or their planes extend parallel to each other and the reference construction plate is located on planes at different levels, such that the arrangement of these molded surface elements or their planes relative to each other largely approximates the curvature of the area to be molded on the outer surface of the tread.

[0010] This invention creates molded surface elements that require no further processing and form a flawless positive surface on a vulcanized tire. By aligning very small, parallel-oriented molded surface elements to approximate the curvature of the positive surface region to be formed, the tire vulcanized in a vulcanizing mold with molded sections has a visually appealing overall positive surface. These molded sections are assembled inside the mold from molded section components according to the invention.

[0011] Preferably, the mold section components are additively constructed with thin sheets and / or microsheets extending parallel to each other. Particularly advantageous in this embodiment is that the molded surface elements are additively constructed with a plurality of flat, stepped planes having sides that cause horizontal differences, such that these sides extend parallel to the direction of the thin sheets and / or microsheets. In a preferred design, a molded surface element consisting of two or three such planes is proposed.

[0012] The curvature of a vehicle's pneumatic tire tread typically varies across its width, being smaller in the central region and larger at the shoulder. Therefore, it is particularly advantageous, especially on the shoulder side, that the molded section components forming these areas are those where the molded surface elements are constructed from, for example, two or three (i.e., more) flat, stepped-like planes. These molded surface elements with multiple stepped-like planes form positive surface elements with stepped edges in the tire tread, which are beneficial for winter performance and ice and snow grip. When the stepped-like planes are constructed on the molded section components forming the tread, i.e., when these planes have widths that differ by a maximum of + / - 30%, the achievable engagement effect on ice and snow is particularly effective.

[0013] Preferably, the insert is constructed as a molded section component by additive manufacturing. The insert has molded elements, such as sheets, microsheets and / or ribs or portions of ribs. The insert may also have edge-side frame portions and a base plate if necessary.

[0014] Therefore, the mold section component, especially the insert for molding at least one tread block, has a bottom portion, molding elements, and, if necessary, an edge-side frame portion, which are ribs for molding grooves or portions of ribs for molding grooves.

[0015] According to another preferred embodiment of the method, surface structures as raised and / or recessed portions are printed on the molded surface elements, these raised and / or recessed portions having a height or depth corresponding to the layer thickness of the additive manufacturing process. The molded surface elements printed in this way imprint microstructures on the tread of a vulcanized tire, these microstructures ensuring particularly good ice and snow grip characteristics, especially in the case of new tires. In this respect, it is particularly advantageous to form regularly implemented surface structures, such as mesh designs. However, structures printed as graphic elements, geometric patterns, or characters, etc., can also have the effect of improving ice and snow grip.

[0016] The present invention also relates to a vulcanizing mold for a vehicle pneumatic tire, the vulcanizing mold having mold sections comprising mold section components according to one or more of claims 8 to 11.

[0017] In the pneumatic tire of the vehicle according to the invention, the positive surface elements in the tread blocks or block structures are either uniformly flat planes or are composed of a plurality of planes extending in a stepped manner with a horizontal difference of at least 100 μm, wherein all the planes of the tread blocks or block structures extend parallel to each other and are located at different levels with respect to the curvature of the tread.

[0018] Such positive profile surface elements result in additional structuring of the tread, which has edges, especially edges on which increased edge pressure acts as the tire rolls on the ground. This increased edge pressure is particularly beneficial for the tire's winter performance, especially its grip on ice and snow.

[0019] Preferably, the cuts and / or micro-cuts in the tread blocks or block structures extend parallel to each other. It is also advantageous in this design that, in the positive surface element composed of multiple planes located at different levels, these planes are defined by at least one edge boundary that extends parallel to the direction of the cuts and / or micro-cuts. Attached Figure Description

[0020] Other features, advantages, and details of the invention will now be described in detail with the aid of the schematic drawings illustrating embodiments. In the drawings:

[0021] Figure 1 This diagram shows a view of a mold section portion of a tire vulcanizing mold, which is composed of a base portion and has an inserted insert.

[0022] Figure 2 A view of the base portion is shown.

[0023] Figure 3 Showing a view of the associated insert,

[0024] Figure 4 A schematic view of the construction plate with the constructed insert is shown.

[0025] Figure 5 A schematic view shows the insert cut from the construction plate.

[0026] Figure 6 A schematic view of a single insert is shown.

[0027] Figure 7 , Figure 8 and Figure 9 Cross-sectional views of inserts having different embodiments of the present invention are shown, and Figure 10 The tread blocks of a vehicle's pneumatic tire are shown in cross-section.

[0028] List of reference numerals

[0029] 1............. Mold Section

[0030] 2.............Base portion

[0031] 2a............Tire shoulder decorative rib

[0032] 3.............ribs

[0033] 4.............thin slices

[0034] 5.............ribcage

[0035] 5a............rib

[0036] 5b............rib flank

[0037] 6.............Inserts

[0038] 7a............Framework section

[0039] 7b............base plate

[0040] 8.............Bottom

[0041] 9.............Kong

[0042] 10............Construction Plate

[0043] 10a...........Kong

[0044] 11............microfilm

[0045] 12............Molded Surface Elements

[0046] 12a...........Side view

[0047] 13............tread blocks

[0048] 13a...........positive surface element

[0049] 14............Incision

[0050] 15............micro-incision

[0051] 16............Envelope

[0052] b.............width Detailed Implementation

[0053] In the following description, the radial direction is understood as the direction perpendicular to the molded surface of the outer surface of the shaped tread, and the axial direction is understood as the direction parallel to the axis of rotation of the tire to be vulcanized.

[0054] Figure 1 The diagram shows a view of the mold section portion 1 of the mold section of a segment ring of a tire vulcanizing mold, which is particularly used for tires of passenger vehicles, trucks, or light trucks, with the inner side (the side facing the mold cavity) particularly visible. The segment ring is a component of the vulcanizing mold that shapes the tire tread and its pattern during tire vulcanization. A typical segment ring, for example, consists of seven to fourteen mold sections, each having a mold section ridge opposite to the inner side, by means of which the mold sections are arranged on the segment guide shoes of the tire vulcanizing mold in a manner known per se.

[0055] In order to form the tread pattern of the tire to be vulcanized, the mold section 1 has molding elements (in particular ribs 3, sheets 4 and microsheets 11 if necessary), wherein the ribs 3 in the illustrated embodiment are at least partially formed by rib skeletons 5 and at least partially formed by inserts 6 (as will be described in detail later).

[0056] The sheet 4 typically has a width on the order of 0.40 mm to 1.00 mm, and its height can vary and corresponds at least partially to the rib height. The microsheet 11 (which typically has a narrow and shallow cut) has a width and height of about 0.20 mm to 0.30 mm.

[0057] The back side of mold section 1 is, for example, a simple cylindrical plane, allowing mold section 1 to be mounted on the section guide shoe of the vulcanizing mold by means of an adapter with a corresponding configuration. In an alternative embodiment, mold section 1 itself is designed as an interface for connection to the container of the vulcanizing mold.

[0058] The base portion 2 of the mold section 1 is made of a metallic material, particularly a steel alloy or an aluminum alloy. In the illustrated embodiment, the base portion 2 is a milled part having milled shoulder decorative ribs 2a and milled rib skeletons 5 on its lateral edge regions. Figure 2 The rib frame 5 has ribs 5a with rib wings 5b, the arrangement and orientation of which are consistent with the arrangement and orientation of the ribs 3. The ribs 5a of the rib frame 5 are narrower than the ribs 3 with the shaped groove, and the rib frame lacks wing sections on the rib wings 5b, which are supplemented by the frame portion 7a of the insert 6 (as will be described later). According to a preferred embodiment, the rib wings 5b are flat planes oriented radially. In principle, the ribs 5a together with their rib wings 5b are milled so that the insert 6 can be inserted flush from above. The level of the tip region of the ribs 5a corresponds to the level of the corresponding position of the ribs 3 with the shaped groove. However, the ribs 5a have a greater height than the ribs 3 because the ribs, together with the shoulder trim ribs 2a on the shoulder side, surround a deeper milled recess with a flat bottom surface 8. The depth of these recesses or the level of the bottom surface 8 is adapted to the thickness of the base plate 7b of the insert 6, such that when the insert 6 is inserted, the inner side of the molding surface of the insert 6 is located at a predetermined molding surface level. The orientation of the bottom surface 8 is adapted to the desired fillet or profile of the outer tread of the tire to be vulcanized.

[0059] For ventilation, the base portion 2 is perforated between the bottom surface 8 and its back side, wherein each bottom surface 8 is either formed with a large number of holes 9 or with only one or two holes 9 for ventilation, and a network of channels consisting of planar recesses is milled on the corresponding bottom surface 8, which are connected to the holes 9 or the holes 9.

[0060] Insert 6 is constructed on structural plate 10 by additive manufacturing, particularly by selective laser melting, using a large amount of metal powder. Figure 4The structural plate 10 is a flat plate, and in a preferred embodiment, the thickness of the structural plate 10 also collectively determines the required depth of the aforementioned recess in the base portion 2. Firstly, the structural plate 10 is also provided with holes 10a corresponding to the arrangement of holes 9 in the base portion 2. A channel network consistent with the channel network milled on the bottom surface 8, provided if necessary, can be formed, but this is not mandatory, as a channel network milled on the bottom surface 8 generally already ensures good ventilation.

[0061] The construction plate 10 is oriented and positioned in the 3D printer such that the created holes 10a are filled with metal powder or the like until they are flush with the upper side of the construction plate 10. Then, each insert 6 is inserted according to its pre-defined design, along with the pre-defined sheet 4 (…). Figure 4 ), and possible additional microsheets 11 ( Figure 8 Other surface structures, (where necessary) characters, tread wear indicators, etc., are constructed layer by layer together. Here, a ventilation hole is provided at the location of the hole 10a in the construction plate 10. Insert 6 ( Figure 6 The insert 6 also includes the provided sheet 4 (and, if necessary, a microsheet 11), the frame portion 7a on the mentioned edge side, and the base plate 7b, such that when the insert 6 is inserted into its predetermined position on the base portion 2, it supplements the ribs 5a of the rib skeleton 5 to form complete, grooved ribs 3. Depending on the actual design of the grooved tread pattern, the insert 6 may also have frame portions 7a only on two or three sides and / or may be designed to form larger tread blocks, more than one tread block, or other block structures in the tread together with the rib skeleton 5. The insert 6 may also include molding elements that form ribs alongside the rib skeleton.

[0062] In an alternative embodiment, the base portion 2 of the mold section 1 does not have a rib skeleton, but instead has an inner surface on which the insert is positioned and secured (e.g., screwed) together with the molding element (forming the pre-defined ribs) in an additive manufacturing process. These ribs can here be configured as frame portions on the edge sides of the insert or formed inside the insert; therefore, inserts without frame portions on the edge sides or inserts with only partially edge-side frame portions can be used.

[0063] On the upper side of the construction plate 10, the base plate 7b of each insert 6 is constructed with flat molded surface elements 12 that extend in a stepped manner and in parallel to each other. The outermost layer of these molded surface elements is a layer of molten metal powder with a flat outer surface.

[0064] Figure 7An embodiment of insert 6 is shown, which has three additively constructed sheets 4 extending parallel to each other between two frame portions 7a. Flat, additively constructed molded surface elements 12 are correspondingly present between the sheets 4 and between the outer two sheets 4 and the frame portions 7a, extending parallel to the surface of the construction plate 10. The molded surface elements 12 between the outer sheets 4 and the frame portions 7a have a uniform height, and here these molded surface elements, referencing the construction plate 10, are located at a higher level than the two molded surface elements 12 between the more inner sheets 4 (which are also at the same level).

[0065] Each insert 6 occupies or is designed for a specific position on the mold section portion 1. At each position, the corresponding insert 6 should form a predetermined outer contour or curvature of the tread outer surface as well as possible at that position. Therefore, the molding surface element 12 is constructed with a number of layers adapted to the layer thickness used in the additive manufacturing method, such that the molding surface element 12 has a level that adapts as well as possible to the curvature of the associated tread region.

[0066] Figure 8 An embodiment of an insert 6 with three sheets 4 is shown, wherein microsheets 11 are additively constructed between the three sheets 4 and between the outer sheet 4 and the frame portion 7a. The microsheets 11 and the sheets 4 extend parallel to each other, with the microsheet 11 extending centrally between the sheet 4 and the frame portion 7a. Uniform, flat molded surface elements 12 are additively formed not only between the microsheets 11 and the sheets 4, but also between the microsheet 11 and the frame portion 7a. The molded surface elements (at different levels) are stepped and extend parallel to each other and parallel to the sheets 4 and the microsheets 11, such that the level of the molded surface elements is adapted as well as possible to the curvature of the tread area to be formed.

[0067] Figure 9An embodiment of an insert 6 having three sheets 4 extending parallel to each other is shown. The insert 6 is positioned on the mold section portion 1 such that the outer contour of the tread portion to be formed at that position requires a height difference Δh1 of at least 100 μm between the base of the adjacent sheet 4 and / or the outer sheet 4 and the frame portion 7a. Between the sheets 4 positioned relative to each other and / or between the outer sheet 4 and the frame portion 7a, each molding surface element 12 is constructed additively from two flat planes extending parallel to each other at different levels. All these planes in the insert 6 extend parallel to each other. In the example shown, the two planes connecting the two sides of the intermediate sheet 4 are reference construction plates 10 at the lowest level, and the outermost plane at the corresponding outermost molding surface element 12 is at the relatively highest level. Instead of two planes, three or more planes at different levels can also be formed. Between these two planes, in each molding surface element 12, a vertical side 12a extends parallel to the sheet 4. The widths b of these planes are preferably generally consistent, however, they can preferably differ from each other by up to ±30%, depending on the curvature to be replicated and the spacing between the sheets 4 or the spacing between the sheets 4 and the frame portion 7a.

[0068] The sheet 4 and the microsheet 11 can be designed to be serrated or wavy and / or can have other arbitrary (especially three-dimensional) structures. The sheet 4 and the microsheet 11 can also be formed in a highly variable manner.

[0069] The flat molded surface element 12 or its plane can also be additionally printed at high resolution in any manner and thereby obtain different surface structures. Such structures are minute ridges and / or recesses (which correspond to the layer thickness of the metal powder layer and have a height or depth of, for example, 30 μm), especially graphic elements, geometric patterns or characters, or structures that form surface structures in the tread that, in the case of new, unworn tires, for example, contribute to good ice and snow grip characteristics.

[0070] The insert 6 is preferably cut from the construction plate 10 together with the construction plate portion on which the insert is directly constructed, for example by means of a laser beam, water jet, or mechanical means. The mating surfaces are further processed if necessary. Thus, the bottom of such an insert 6 is composed of both the construction plate portion and an additively constructed base plate 7b having molded surface elements 12. In an alternative embodiment, the insert 6 is separated (e.g., cut off) along the upper side of the construction plate 10, so the bottom of such an insert is an additively constructed base plate 7b. In another alternative, a prefabricated base plate is used according to the size of the insert, and each insert is constructed on a separate base plate.

[0071] The completed insert 6 is then secured in its position on the base portion 2. A secure connection of the insert 6 is achieved, for example, by shrinking it in place by heating the base portion 2 prior to insertion. Alternatively, the insert 6 can be connected to the base portion 2 by screwing or welding.

[0072] The additive manufacturing of the insert is automatically controlled by software, as is the milling work on the base portion 2. The software-controlled algorithm, due to the stepped transition, must meet specific requirements to ensure the best possible design on the tire, thereby achieving the best possible performance.

[0073] Figure 10 A cross-section of a tread block 13 passing through the tread of a vehicle's pneumatic tire is schematically shown, wherein cuts 14 and micro-cuts 15 are formed in the tread block 13. This cross-section is, for example, a cross-section along the circumferential direction of the tread, so that the cuts 14 and micro-cuts 15 (which all preferably extend parallel to each other) extend in the axial direction. Furthermore, an envelope 16, drawn in dashed lines, is drawn along the outer surface of the tread block 13 that comes into contact with the ground when the vehicle's pneumatic tire rolls. This envelope reproduces the outer contour that may be produced in a conventional tire hot press during tire vulcanization. According to the invention, the tread block 13 has an outer surface composed of positive surface elements 13a, all of which extend parallel to each other; however, their arrangement relative to each other is adapted to the orientation and curvature of the envelope 16.

Claims

1. A method for manufacturing a mold section component for a vulcanizing mold, the vulcanizing mold being used for a pneumatic tire of a vehicle to form at least one tread block or to form a generally curved block-structured region of the tread having an outer tread surface, the mold section component being constructed by means of an additive manufacturing method by applying and melting metal powder layer by layer flatly on a flat construction plate (10) together with a bottom portion (7b) and molding elements, wherein the molding elements define or surround molding surface elements (12) of adjacent regions forming the outer tread surface, characterized in that, The molded surface elements (12) are respectively constructed additively from a plurality of flat planes (12a) that extend in a stepped manner relative to each other with a horizontal difference of at least 100 μm, wherein all the molded surface elements (12) or their planes extend parallel to each other and refer to the construction plate (10) on planes located at different levels, wherein the outer molded surface elements refer to the construction plate (10) at a higher level than the more inner molded surface elements, such that the arrangement of these molded surface elements or their planes relative to each other approximates the curvature of the area to be molded on the outer surface of the tread.

2. The method according to claim 1, characterized in that, The additive manufacturing method is selective laser melting.

3. The method according to claim 1, characterized in that, The molded element is a region of sheet (4) and / or microsheet (11) and / or rib and / or rib.

4. The method according to claim 3, wherein the mold section component has thin sheets (4) and microsheets (11) extending parallel to each other, characterized in that, The molded surface element is additively constructed with a plurality of flat, stepped planes extending from each other on the sides that cause the horizontal difference, such that these sides extend parallel to the orientation of the sheets (4) and / or microsheets (11).

5. The method according to claim 1, characterized in that, The molded surface element (12) is constructed additively from a plurality of flat, stepped planes such that the widths (b) of the planes of these molded surface elements differ from each other by a maximum of ±30%.

6. The method according to claim 1, characterized in that, The insert (6) is constructed as a mold section component by additive manufacturing, the insert having molded elements.

7. The method according to claim 6, characterized in that, The molded element is a sheet (4), a microsheet (11), and / or a rib (5a) or a portion thereof.

8. The method according to claim 6, characterized in that, The insert also has a frame portion (7b) on the edge side and a base plate (10).

9. The method according to any one of claims 1 to 8, characterized in that, Surface structures as protrusions and / or recesses are printed on the molded surface element (12), the protrusions and / or recesses having a height or depth corresponding to the layer thickness of the additive method.

10. The method according to claim 9, characterized in that, Print graphic elements, geometric patterns, or characters as surface structures.

11. The method according to claim 9, characterized in that, A uniformly arranged structure is printed as the surface structure.

12. The method according to claim 11, characterized in that, The uniformly arranged structure is a mesh design.

13. A mold section component for a vulcanizing mold used in a vehicle pneumatic tire to form at least one tread block or a generally curved block-structured area of ​​the tread having an outer tread surface, the mold section component being constructed by means of an additive manufacturing method by applying and melting metal powder layer by layer on a flat construction plate (10) together with a bottom portion (7b) and molding elements, wherein the molding elements define or surround molding surface elements (12) of adjacent regions forming the outer tread surface, characterized in that, The molded surface element (12) is correspondingly composed of a plurality of flat, stepped planes extending from each other with a horizontal difference of at least 100 μm, wherein all the molded surface elements (12) or their planes extend parallel to each other and refer to the construction plate (10) on planes at different levels, wherein the outer molded surface elements refer to the construction plate (10) at a higher level than the inner molded surface elements, such that the arrangement of these molded surface elements or their planes relative to each other approximates the curvature of the area to be molded on the outer surface of the tread.

14. The mold section component according to claim 13, characterized in that, The additive manufacturing method is selective laser melting.

15. The mold section component according to claim 13, characterized in that, The molded element is a sheet (4) and / or a microsheet (11) and / or a rib and / or a portion of a rib.

16. The mold section component according to claim 13, characterized in that, In a molded surface element (12) having multiple flat planes that extend in a stepped manner to each other, the planes have widths (b) that differ from each other by a maximum of ±30%.

17. The mold section component according to claim 15, wherein the mold section component has thin sheets (4) and / or microsheets (11) extending parallel to each other, characterized in that, The molded surface element (12) having a plurality of flat, stepped planes (12a) extending in a stepped manner provides sides that cause the level difference, which extend parallel to the sheet (4) and / or microsheet (11).

18. The mold section component according to any one of claims 13 to 17, characterized in that, The mold section component is an insert (6) for molding at least one tread block, the insert having the bottom portion, molding elements and, if necessary, an edge-side frame portion (7b), the molding elements being ribs for molding grooves or portions of ribs for molding grooves.

19. A vulcanizing mold for a vehicle pneumatic tire, the vulcanizing mold having mold sections comprising mold section components according to any one of claims 13 to 18.

20. A vehicle pneumatic tire having a treaded, generally curved tread divided into tread blocks (13) and / or block structures by grooves, wherein tread blocks (13) and / or block structures having cuts (14) and / or micro-cuts (15) are present, wherein positive surface elements (13a) are formed between the cuts (14) or micro-cuts (15), or between the cuts (14) and micro-cuts (15), or between the cuts (14), micro-cuts (15) and grooves. Its features are, The positive surface element (13a) in the tread block (13) or block structure is correspondingly composed of a plurality of planes extending in a stepped manner to each other and having a horizontal difference of at least 100 μm, wherein all the planes of the tread block or block structure extend parallel to each other and are located at different levels with the curvature of the tread.

21. The vehicle pneumatic tire according to claim 20, characterized in that, The cut (14) and / or micro-cut (15) traverse the tread block (13) and / or block structure.

22. The vehicle pneumatic tire according to claim 20, wherein the vehicle pneumatic tire has a tread having tread blocks (13) and / or block structures with slits (14) and / or micro-slits (15) extending parallel to each other, characterized in that, In a positive surface element (13a) consisting of multiple planes located at different levels, these planes are defined by at least one edge boundary that extends parallel to the direction of the cuts (14) and / or micro-cuts (15).

23. The vehicle pneumatic tire according to any one of claims 20 to 22, characterized in that, In a positive surface element composed of multiple planes, these planes are located at different levels in a stepped manner, rising or falling relative to each other.

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