WO2017137299A1

WO2017137299A1 - Method for producing a shoe sole

Info

Publication number: WO2017137299A1
Application number: PCT/EP2017/052226
Authority: WO
Inventors: Hans-Martin Knerr
Original assignee: Hans-Martin Knerr
Priority date: 2016-02-09
Filing date: 2017-02-02
Publication date: 2017-08-17
Also published as: DE102016001412A1; DE102016001412B4

Abstract

The invention relates to a method for producing a shoe sole, having the following steps: - imaging the sole (10) in a polygon model; storing the data set of the polygon model of the sole in a data storage unit; providing or generating a sole pattern with 3D information; transferring the sole pattern with 3D information to at least one section of a surface surrounded by a sole contour of the sole (10); storing the polygon model of the sole with the sole pattern in a data storage unit; and producing a sole or a production mold for producing a sole on the basis of the stored data of the polygon model of the sole with the sole pattern.

Description

"Method of making a shoe sole" Description: Technical Field:

The present invention relates to a method for producing a shoe sole,

especially an outsole. State of the art:

For the production of outsoles, various materials are usually used for finishing or plastic. The materials for making up are, for example, leather.

Plastic soles can either be made from blanks or poured or sprayed. For pouring or spraying the plastic sole, the plastic is first softened and then filled into a corresponding shape. The use of a mold, in particular a casting or injection mold for the production of soles offers in comparison to the preparation of blanks from web materials a comparatively large design freedom for soles.

The production of a casting or injection mold is usually based on a

existing prototype of a sole. This prototype of a sole usually has to be made manually. A change in the shape, geometry and design of a sole thus requires the manual production of a new sole model, which is relatively complex and time-consuming. Particularly complex here is the change of the sole profile, since this must be worked out manually from the bottom of the sole. In geometrically irregular patterns of the sole profile is sometimes even artistic skill of the editor necessary.

Presentation of the invention:

It is an object of the present invention to provide a method for producing a sole, by means of which different soles can be easily produced.

Furthermore, it is an object of the present invention to provide a template for production forms to the sole by known methods such as casting, milling or Make syringes.

In particular, it is an object of the invention to provide a method for producing a sole, in which the sole profile can be easily changed.

According to the invention the object is achieved by a method according to claim 1.

In the method according to the invention, a sole is first imaged in a polygonal model. The data set of the polygon model of the sole is stored in a data memory. In parallel, a sole pattern with 3D information is provided or, if not yet available, created. The sole pattern with 3D information is transmitted to at least a portion of a surface surrounded by a sole contour of the sole. The new polygon model of sole with the sole pattern is in one

Data memory saved. Finally, a sole or production mold for making a sole is created based on the stored data of the soleplate-type polygon model.

The sole itself or the production mold for producing a sole can be physically produced or digitally displayed on a screen.

With the help of this method can be easily adapted to the shape and appearance of the sole to specifications of the sole manufacturer.

For an exact transfer of the sole pattern to the surface of the sole, it is advantageous that the sole contour is detected by spline curves.

The sole contour may be, for example, the sole bottom contour or the sole edge.

In a preferred embodiment of the method of manufacturing a shoe sole, a 3D sole pattern stored in a database is provided and transferred to a sole contour of the sole.

To create a sole pattern with 3D information, which is transmitted to a sole outline of a sole, in addition to three-dimensional images are also suitable

two-dimensional images or technical sole drawings, which are provided with height and depth information by means of image processing. Alternatively, the sole pattern can be created with 3D information by photogrammetry. As a result, an existing sole profile can be easily transferred to different sole shapes. In the case where the sole pattern is image-wise formed with 3D information, it is preferable that the sole pattern with 3D information be projected on the sole contour of the sole.

This embodiment of the method is of particular advantage for large areas

Sole patterns that completely cover the area defined by the sole outline of the sole. However, it is understood that this embodiment is also suitable for applications in which the sole pattern does not completely cover the area bounded by the sole contour of the sole. In an alternative embodiment of a method for producing a shoe sole, a multiplicity of pattern elements are stored in a database, with individual pattern elements being selected that are successively transferred to a sole contour of the sole to create the sole pattern with 3D information. In this method, it is possible to make the design of the pattern for the shoe sole directly and individually on a digitally illustrated shoe sole.

In a preferred embodiment, the imaging of a sole takes place in one

Polygon model based on a three-dimensional image of a shoe sole or a sole.

The three-dimensional image of the shoe sole can be determined, for example, by means of photogrammetry, the acquired data having location coordinates which are connected to form polygonal surfaces.

Alternatively, the three-dimensional image may be generated digitally from a polygon model of a last.

The method for producing a three-dimensional image of a sole digitally from a polygonal model of a last substantially proceeds as follows:

First, a polygon model of a last is created. Thereafter, an insole is created by extrusion of the groin floor of the groin. Subsequently, the formation of a Sole profiles extruded the side profile of the last and formed a tread block. The material thickness of the shoe upper is taken into account by extruding the last around the material thickness of the shoe upper. To form an impression in the tread block of the material thickness of the shoe upper extruded strips and the insole are inserted with a predetermined immersion depth in the tread block. In the next step, the sole, in particular the outline of the sole bottom and the sole side profile is cut. Finally, a sole profile is inserted for example by means of image projection in the sole model. The complete polygon model of the sole is created and the data of the

Polygon models are stored in a data store.

In this case, it is provided in a preferred embodiment that the cutting of the sole takes place by means of image projection.

It should be noted that the term extruding is understood to mean a dimensional increase of an element by parallel displacement in space.

As an alternative to the two methods described above for creating a polygon model of a shoe sole, an already existing polygon model of a sole can be used, to which a sole pattern is transferred, in particular projected.

In a preferred embodiment, prior to making a physical sole or a production mold, the sole or production mold obtained from the stored data of the sole-shape soleplate polygon model may be digitally processed. For example, the sole or production mold with sole pattern

be adapted to different shoe sizes.

In order to produce a casting, milling or injection mold or a physical sole model, the stored data of the sole's polygon model with the sole pattern transferred thereto are forwarded to a device for producing a casting, milling or injection mold or to a device for producing a sole ,

Brief description of the drawings:

Preferred embodiments will be explained in more detail with reference to the attached drawings, in which: FIG. 3 shows a three-dimensional image of a sole; Fig. 2 an image template;

Fig. 3 sole bottom with projected image;

4 shows an image of a last with consideration of the blasting;

5 a strip with extruded side profile; 6 shows a last and a profile block in the cut state.

FIG. 7 shows a strip with insole extruded around the thickness of the material; FIG.

8 shows a profile block with an image of a sole side profile;

9 shows a profile block with a picture of a sole contour;

Fig. 10 is a grid over the sole. Ways to carry out the invention and commercial usability:

Fig. 1 shows a three-dimensional image of a sole 10, in particular a

three-dimensional illustration of an outsole. On the sole bottom of the sole 10 shown in Fig. 1, the image motif shown in Fig. 2 is to be transmitted.

Fig. 3 shows the bottom 12 of the sole 10 with the image motif shown in Fig. 2.

To produce such a sole 10 with an image motif, the procedure is as follows: The sole 10 is represented in a polygon model of the sole. The data of the

Polygon models of the sole are stored in a data store.

The sole floor outline is detected by spline curves. In parallel, a sole pattern with 3D information is created. In the illustrated

Embodiment, the sole bottom outline is transferred to the illustrated in Fig. 2 two-dimensional image template. The selected area of the image template is turned into Image processing program loaded and edited in such a way that individual image components height and depth information are assigned.

For example, images with motifs and patterns as well as technical sole drawings are suitable as a picture template.

The edited image template with the height and depth information is displayed on the

Transfer sole bottom of the polygon model of the shoe, in particular projected.

Subsequently, the polygon model of the sole with the three-dimensional image projected on the sole bottom is stored as a new polygon model.

From the data of the new polygon model, a sole model can now be created. The soles themselves can be physically made, for example, by means of a 3D printer or digitally displayed.

Additionally or alternatively, the data of the polygon model of the sole with the three-dimensional image projected on the bottom of the sole can also be forwarded to an apparatus for producing a production mold such as a casting, milling or injection mold to form a corresponding casting, milling or injection mold to produce the sole model.

Before a sole or a production mold for the production of a sole is produced, the sole or production mold present in the polygonal model can also be processed digitally in order, for example, to adapt the created sole or production mold to different sizes.

In the described embodiment, a machined two-dimensional template is transferred to the sole bottom. Instead of a edited two-dimensional template, a three-dimensional template can also be used. The three-dimensional templates can be created by any known method. Among other things, three-dimensional templates in the form of polygonal representations of a sole pattern have proven to be advantageous, which, for example by means of

Photogrammetry were created. Alternatively, existing 3D sole patterns stored in a database can be transferred to a sole contour of the sole. In the described method, it has heretofore been assumed that a pattern is projected onto the bottom of the sole. However, it is also possible, in the same way described, additionally or alternatively to change the surface structure of the sole edge, in particular to provide it with a three-dimensional image motif.

In the illustrated embodiment, the 3D sole pattern has been transferred to the sole, in particular, projecting that the 3D sole pattern covers the entire sole bottom. In one embodiment, not shown, only a part of a

Sole bottom or a sole edge provided with a sole pattern. In this case, the 3D sole pattern is only transferred to a part of the area specified by the sole contour, in particular projected.

It is understood that the surface is not always flat due to curvatures of the sole. In a method for producing a shoe sole, not shown, has a

Database on a variety of 3D pattern elements, which can be selected individually and successively transferred to the polygon model of the sole, in particular on the sole bottom or the sole edge of the polygon model of the sole. The three-dimensional image of the shoe sole can be determined, for example, by means of photogrammetry, wherein the acquired data have location coordinates which are connected to polygonal surfaces.

In the event that the determined by photogrammetry polygonal representation of

Shoe sole already has a sole pattern, it is advantageous that the section to be provided with a new sole pattern is digitally smoothed before transfer of the new sole pattern.

Alternatively, the three-dimensional image of the sole can be generated digitally from a polygon model of a last.

It is understood that even existing polygonal models of a shoe last or a sole can be used. If the existing polygon model of a sole already has a sole pattern, it is advantageous if the section that is to be provided with a new sole pattern is digitally smoothed before transferring the new sole pattern. The process in which the three-dimensional image of the sole digitally from a

Polygon model of a last is now described in connection with Figures 4 to 10 in detail. In this method, a polygon model of a last 14 is first generated.

The polygon model of the last 14 is scaled and aligned in a coordinate system, preferably a cubic coordinate system. Here, the blasting of the shoe, that is, the height of the heel of the shoe is taken into account (see Fig. 4).

The contour of the groin floor is detected by spline curves.

Subsequently, to create an insole 16, the sole bottom of the last 14 is extruded and stored as an insole 16. Depending on the nature of the insole 16, this can be done in one step or in two steps.

In the next step, the sole bottom profile is created. For this purpose, the side profiles 18 of the last 14 are extruded (see FIG. 5) and a profile block 20 is formed along the lower edge of the side profile 18. The profile block is a substantially cuboidal

Basic body enclosing the sole to be formed.

The profile block 20 can be larger than the lower edge of the side profile in a side view, for example, in all spatial directions 2cm. The size of the profile block depends on the nature of the sole and the shape of the shoe and may of course have other than the dimensions mentioned.

The strip profile is cut out of the profile block, which is rectangular in side view, and a sole bottom profile 22 is formed in the profile block 20 (see FIG. 6). Subsequently, the strip 14 is extruded by the material thickness to take into account the material thickness of the shaft.

The extruded around the thickness of strips 24 is combined with the insole 16 (see Fig. 7). Subsequently, the extruded to the material thickness strips 24 is introduced together with the insole 16 with a predetermined immersion depth in the profile block 20. By subtracting the material thickness extruded last 24 together with the insole 16 of the tread block 20, the sole top and the Sole top surrounding edge made.

For the creation of the shape and contour of the outer sole edge, an image of the desired sole side profile 26 with a corresponding outline and surface design is projected onto the side surface of the profile block 20 and the corresponding outline is cut out of the profile block 20 (see FIG. 8).

In the next step, the outline of the sole is projected onto the top of the tread block 20 by means of an image of the outline of the sole 28 and the corresponding outline is cut out of the tread block 20 (see Fig. 9).

The sole polygon model can also be smoothed or

be reworked by placing a grid 30 over the polygon model. The polygon model of the created sole is stored in a data memory and is available for further processing.

In the method just described, the sole underside and / or the sole outer edge can then be provided, for example, with a sole pattern as described above.

Claims

claims:

1 . A method of making a shoe sole, comprising the following steps:

- imaging the sole (10) in a polygon model;

Saving the record of the polygon model of the sole in one

Data storage;

Providing or creating a sole pattern with 3D information;

Transferring the sole pattern with 3D information to at least a portion of a surface surrounded by a sole contour of the sole (10). Save the polygon model of the soled sole in one

data storage

Create a sole or production mold to make a sole based on the stored data of the soleplate-style polygon model.

2. A method for producing a shoe sole according to claim 1, characterized in that the sole contour is detected by spline curves.

3. A method for producing a shoe sole according to any one of the preceding claims, characterized in that the sole contour of the sole bottom outline or the sole edge is.

4. A method for producing a shoe sole according to any one of the preceding claims, characterized in that provided in a database stored 3D sole pattern and transmitted to a sole contour of the sole.

5. A method for producing a shoe sole according to one of claims 1 to 3, characterized in that for the production of the sole pattern with 3D information, a two-dimensional image or a two-dimensional technical sole drawing is provided by means of image processing with depth and height information.

6. A method for producing a shoe sole according to one of claims 1 to 3, characterized in that the sole pattern is created with 3D information by means of photogrammetry.

7. A method for producing a shoe sole according to any one of the preceding claims, characterized in that the sole pattern with 3D information image-like is formed and the sole pattern is projected with 3D information on the sole contour of the sole.

8. A method for producing a shoe sole according to one of claims 1 to 3, characterized in that a plurality of pattern elements is stored in a database and that to create the sole pattern with 3D information individual

Pattern elements are selected, which are successively transferred to a sole outline of the sole.

9. A method for producing a shoe sole according to any one of the preceding claims, characterized in that the imaging of a sole in a polygon model based on a three-dimensional image of a shoe last or a sole (10).

10. A method for producing a shoe sole according to claim 9, characterized in that the three-dimensional image of the shoe sole (10) is determined by means of photogrammetry and the acquired data have location coordinates, which are connected to polygonal surfaces.

1 1. Method for producing a shoe sole according to one of the preceding claims, characterized in that the three-dimensional image of the sole (10) is generated digitally from a polygonal model of a last.

12. A method for producing a shoe sole according to claim 11, characterized in that the digital generation of a three-dimensional image of the sole from a polygonal model of a last essentially comprises the following steps:

Generating a polygon model of a last (14);

Creating an insole (16) by extruding the last floor of the last (14);

- extruding the side profile (18) of the last (14);

- Forming a profile block (20);

- Extruding the last to the material thickness of the shoe upper;

- Inserting the extruded to the material thickness of the shoe last last (24) and the insole (16) with a predetermined immersion depth in the tread block

(20);

- cutting the sole, in particular the contour of the sole bottom and the sole side profile;

Adding a sole profile; Creating a polygon model of the sole;

Save the data in a data store.

13. A method for producing a shoe sole according to claim 12, characterized in that the cutting of the sole takes place by means of image projection.

14. A method for producing a shoe sole according to any one of the preceding claims, characterized in that the sole or production form obtained from the stored data of the polygon model of the sole-sole sole to create a sole is processed digitally.

15. A method for producing a shoe sole according to one of the preceding claims, characterized in that the stored polygon model with the transmitted sole pattern or the digitally processed polygon model of the sole with

Sole pattern is forwarded to a device for producing a sole or to a device for producing a casting, milling or injection mold.