EP0792597B1 - Method of producing the parts of the upper for orthopaedic shoes - Google Patents

Abstract

The method produces a last copy (22), on which characteristics are marked, and corresponding blanks are cut. The characteristic lines are created by mathematical functions between marking or reference points, and are stored in a computer. Contours and marking points are fed into the computer. All stored digitalised data is compared with reference measurements taken from the last, and corrected. The correct blanks are shown on a screen, or drawn, and are cut from flat material, eg. paper, by a cutting plotter.

Description

TECHNICAL AREA

The invention relates to a method by which for a Orthopedic shoe upper required individual cut pieces can be produced. The shoe uppers are composed of several individual shaft parts. The The number and shape of the individual parts depends on the respective shoe model and also depending on whether the shoe held together by eyelets, elastic or Velcro and should be held on the respective foot. In mass production of shoes and thus also of shoe uppers can cut the same individual parts in large quantities be used. It is different with orthopedic products Shoes. These shoes are individual for each foot customized. The shoes are unique in their form. The Item cuts must therefore be made for each individual shoe be newly manufactured.

STATE OF THE ART

GB 2 135 170 A describes a method for the standardization of Last, soles and heels known. With this procedure the effort to manufacture shoes is to be standardized the lasts, soles and heels are simplified, so that these parts are better matched. Orthopedic shoes have an individual shape, so that Standardization of lasts or shoe parts not possible are.

The problem underlying the previously known GB 1 414 630 A concerns an automated manufacturing of size graduated shoe templates. From US 5,237,520 A it also previously known to depend on a shoe size classification make of individually determined soles and -print. In both publications there is no individualized Shoe manufacturing thought like orthopedic Shoes is essential.

It is known to cut the individual parts for orthopedic Manufacture or construct shoe uppers by hand. First, a last is made. From the last will then made a groin copy. This ingot copy will for example cut out of a foil and corresponds half the last size. On the last copy become the typical for the respective shaft model Cutting characteristic curves drawn in or constructed into it, on the basis of marking points entered in the bar copy. Such mark points are viewpoints, Bale point, shaft termination point, break point and a die Point on the center of the heel. The point of view marked from the front, from above onto the last or onto the foot seen, first point visible from above after the ascent in Toe area. This point marks the place up to the decorative seams and the like can be moved forward. The ball point marks the widest part of the Forefoot and also determines the slip area for one Shoe. The end of the shaft marks the rear height of the shaft in low shoe models. The break point poses the actual rear end point of the low shoe model The middle of the heel finally shows the highest Point in the heel area.

As a rule, for example with derby models, the Size of half the slip-in width (derby width) required. Therefore the derby width is noted on the last copy. The shoe size is another point of reference. The size of the shoe influences the proportion, for example the shaft parts, such as. B. the eyelet parts in the area of Back of the foot. Additional reference points can also arise depending on whether the orthopedic shoe is for you Hollow foot or flat foot is intended, or whether a wide Areas of normal foot. Because of these markers and other reference points then become the cutting characteristics entered in the groin copy. It is in the Last copy the necessary for sewing the individual parts together Lasting allowance and the other from orthopedic Added allowances required. These encores can be due to padding, the z. B. shortened Feet or missing foot areas may be required.

The cutting characteristics are intended for a specific model always look approximately the same, regardless of the respective orthopedic shoe shape. The construction that of the individual cuts is very time consuming.

PRESENTATION OF THE INVENTION

The invention is based on this prior art based on the task of an economically favorable process for the manufacture of an orthopedic shoe upper specify the required individual cuts.

This invention is characterized by the features of claim 1 given. Accordingly, the invention is characterized by the following process steps:

The shaft-dependent cutting characteristics are shown by between different marking and / or reference points mathematical functions created and in an electronic Data processing system (EDP) saved. At different shoe models are then correspondingly many Functional cutting characteristics recorded in the EDP, saved and available according to model type. The math Functions also depend on the position of the marking and other reference points.

Then the outline of the last can then removed last copy can be entered into the EDP. there on the outline are also those described above Marking points entered.

It has been found that this inguinal copy is opposite the surface of the last from which it was removed is warped and in particular be too small can. There are therefore several length dimensions (control dimensions) directly removed from the last and the copy of the last accordingly distorted, so that these lengths are then identical are also present on the newly created last copy. Further features are the subject of the further features of claim 1.

In the then corrected, new last copy, those for the Position of the cutting characteristics still required Reference points entered in terms of data. Such reference points take into account allowances that are technically necessary and / or important for orthopedic foot corrections are.

The cutting characteristic curves determined in this way, the outline lines of the blanks are then calculated based on the existing model and size-dependent mathematical Functions automatically determined by the EDP. The individual cuts can be output in terms of data.

The blanks can be graphically displayed on a screen and above also shown or output in the form of drawings become. Graphic representations can show the course of the Visualize construction steps carried out by the computer.

The cuts can not only be represented graphically but also also with the help of a cutting plotter made of a flat material such as B. a paper material can be cut out. Cuts can then be placed directly on upper leather skins and cut out the individual parts of a shoe upper become.

The new bar copy in particular is advantageous available by entering personal data in the EDP saved. In this way it is possible to have several Models or another one at a later date To produce the shoe upper in a simple manner in that the individual cuts without any further design effort immediately retrieved from the EDP and, for example, by a Cutting plotters can be cut out of a paper web can.

Similar to the cuts for the shoe upper itself also the individual lining parts to be used in the shoe upper determine mathematically, if necessary graphically on a screen shown and from a cutter from a Cut out flat material such as paper material become. The lining parts are based on the circumference and in numbers on the upper material blanks and like the upper material blanks described above processed and called up in the same way by computer become.

Further features and advantages of the invention result by the features further specified in the claims as well from the following embodiment.

BRIEF DESCRIPTION OF THE DRAWING

Fig. 1

die von einem Leisten abgenommene Leistenkopie vor und nach ihrer Korrektur,

Fig. 2

die korrigierte, neue Leistenkopie mit ihren Zuschnitt-Kennlinien,

Fig. 3

die einzelnen, von einem Schneideplotter ausgeschnittenen Zuschnitt-Formen eines Schuh-Schaftes.

The invention is described and explained in more detail below with reference to the embodiment shown in the drawing. Show it:

Fig. 1

the last copy of a last before and after its correction,

Fig. 2

the corrected, new last copy with its cutting characteristics,

Fig. 3

the individual cut shapes of a shoe upper cut out by a cutting plotter.

WAYS OF CARRYING OUT THE INVENTION

The bar copy 10 shown in dash-dotted lines in FIG. 1 represents the outline of a surface, that in the longitudinal direction seen half modeled lasts of a foot corresponds. This last copy 10 is made by hand. In The last copy 10 shows five marking points: Viewpoint 12, ball point 14, shaft end point 16, Break point 18 and heel center 20. These points are as above already mentioned and represent known construction points in a last copy 10.

This bar copy 10 is in an electronic data processing system (EDP) read. In the present case the strip copy 10, i.e. the film, on a digitizing tablet placed and scanned circumferentially. In addition the above five points are entered into the EDP. The outline and thus the last copy 10 is then digitized Form available in the EDP.

The shape of the last copy 10 is then checked and possibly replaced by a new last copy 22. The latter occurs in cases where the inguinal copy 10 is not the corresponds to the exact surface of the last. To the review and, if necessary, correction of the inguinal copy 10 and Making a new last copy 22 is on the last the actual distance between the heel center 20 and the lower front edge 24 determined. This distance E1 is on the extension of the viewpoint 12 and Ball point 14 straight lines 25 starting from heel point 20 measured removed. One arrives at one if necessary new edge 26.

Viewpoint 12 is also corrected accordingly. It will the distance between the center of the heel 20 and the point of view 12 - directly on the last, along the surface or the outside of the last removed and this distance E2 removed on straight line 25. The viewpoint 12 moves then, if necessary, to the new viewpoint 28.

The ball point 14 is now shifted on the straight line 25 so that the distance between viewpoint 12 and ball point 14 the Distance between the new viewpoint 28 and the new bale point 30 corresponds. The distance between the point of view and Bale point represents the so-called leaf length 32 Leaf length is clearly visible on a shoe from diagonally above and should therefore with the appropriate orthopedic Shoe must also be available in the correct length and position.

Starting from the bale point 30, it then goes in the direction of the leaf line 33 to the lower area 34 of the inguinal copy the largest Bale width removed. This results in the lower construction point 36 on the new last copy 22.

The rear area of the inguinal copy 10 is with the new one Last copy 22 congruent, since there with material-related Distortion of the last copy made of foil material is not to be expected.

The new last copy 22 is shown in solid lines in FIG. 2. The above five marker points, namely Viewpoint 28, ball point 30, shaft end point 16, Abort point 18 and heel center 20 are entered is the edge 26 and the existing below the heel center 20 Footpoint 40 can be seen. Also the lower construction point 36 is shown.

The lower area 34 of the bar copy 22 is now one Stripe area 42 enlarged. This area 42 results from a lasting allowance and possibly from, for example Cork midsole to be made later. In the present In this case, no cork midsole is required and therefore also no corresponding encore is provided. The pince-nez is for sewing together the later cut-out shaft material such as leather material. The Curve 44 is the outline delimiting area 42 below adapted to the curve of the lower region 34 and equalizes the curve curvature 46 there by a less curve curvature 48.

In the rear heel area, curve 44 ends at one point 50. This point lies once on the down extending, tangential extension of the heel curve 52 at foot point 40. The distance from point 40 corresponds to Lasting allowance at this point.

In the present case, it is a derby model. The on the straight line between bale point 30 and point 36 apparent derby point 58 is from bale point 30 by the measure the derby width away. The derby width corresponds to this half the slip width in such derby models.

From the derby point 58 is entered into the EDP by one Distance value of point 60 determined. Owing to The known construction auxiliary lines then become the model-dependent ones upper construction point 62 (front shaft end) EDP-like in the upper curve area 64 of the last copy 22 determined. Then the upper computer can then Derby sheet 70 calculated and in the last copy 22 can be entered graphically. The one in the lower area Curve 48 existing construction point 74 represents that lower end of the one going down from construction point 60 lower derby bow 76. Also one between the upper Point 62 and the shaft end point 16 extending ankle arch 80 is calculated according to EDP and displayed graphically.

Parallel to the heel curve 52, which is between the lower point 50 and the termination point 18 runs, a curve is EDP-like 84 determined. The distance between curves 52 and 84 represents the width of half the rear belt 88 (Fig. 3).

Find the characteristics shown in dashed lines in Fig. 2 the individual cuts in Fig. 3 again. Along this dashed lines, if necessary, taking into account by seam allowances, the individual parts are made cut out of a paper web. It arises z. B. the Rear belt 88 by doubling the in Fig. 2 between the Curves 84 and 52 existing strip, also a front Part 90, a side part 92, a tongue part 94 and a lining part 96. The side part 92 is needed twice and can can be used twice by folding down.

The front part 90 is mirrored from the corresponding one front part 90 a of the inguinal copy 22 was created. The at the front part 90 existing upper and lower lobes 102, 104 each correspond to that below the lower derby arch 76 and the lower curve curvature 48 available surface area. This can be seen from the bar copy 22 Area 104 a is not by the outline 106 of the two tabs 102 and 104, but by the reset Cutting line 100 within these two tabs 102, 104 limited. The cutting line 100 represents the course of the curve of the lower derby arch 76. The area between the cut line 100 and the outer line 106 an addition 108. This addition 108 is required, for example another part like the side part 92 on the to be able to sew on the front part 90. For this reason owns also the side part 92 a corresponding addition 110, in Area of the left and top margin in FIG. 3. That encore 110 is between the outline 112 and a cut line 114 scheduled. The cut line 114 limits the area visible in the strip copy 22 116.

In a corresponding manner, the tongue part 94 has a lateral one Addition 118 in its left end region in FIG. 3, with which sewn it in the central area 122 of the front part 90 can be.

In the side part 92 four points 124 are marked, the locations of Identify eyelets or the like.

Within the cutting line 114 there is a in the side part 92 Dash-dotted marking line 130 printed out according to EDP available. This marking line 130 represents the line course a decorative seam. By rubbing off or pushing through The course of the line can then be along the marking line 130 this decorative seam specified on a leather material, for example become.

The lining part 96, which is similar to the side part 92 two times is present on a shaft, on the inside and on the outside of the shaft in question is the Outline and the shape of the side parts 92 and the front Part 90 adjusted accordingly.

The cut lines shown in FIG. 3 Parts shown in dashed lines represent about 1 mm wide and several mm long cutouts that are perforated are arranged one behind the other. In these cutting lines can then with the help of a marker pen such as a pencil strokes on one below the one in question Partly placed upper leather fur can be applied.

When we talk about shoes in the above, they are including all types of shoes, including slippers, bathing shoes, Clogs, slippers, sneakers, work shoes, hiking shoes or to understand sheepskin boots. Also supposed to the expression shoes the shoe shape of the sandal or also the be covered with lace-up boots.

Claims (8)

1. Method of producing the individual-part blanks (88, 90, 92, 94) which are necessary for an orthopaedic shoe upper, it being the case that

   a last copy (10, 22) is produced for a last,

   the characteristic blank lines (44, 48, 52, 70, 76, 82) which are typical of the respective upper model are marked in on the last copy (10, 22), to be precise on the basis of marking points marked in the last copy, for example a visible point (12, 28), ball-of-the-foot point (14, 30), upper-termination point (16), break-off point (18) and heel centre (20), as well as additional reference points (24, 26, 36, 40, 58, 62, 74),

   the blanks (88, 90, 92, 94) resulting from the characteristic blank lines (44, 48, 52, 70, 76, 82) are cut out, taking account of allowances (42, 108, 110, 118) necessitated by the sewing and/or by special orthopaedic features,

   characterized in that

   the upper-dependent characteristic blank lines (44, 48, 52, 70, 76, 82) are produced by mathematical functions running between different marking and/or reference points (18, 20, 26, 40, 58, 60, 62, 74) and are stored in an EDP,

   the outline (10) and the marking points (12, 14, 16, 18, 20) are entered and/or read into the EDP in data form and/or point by point,

   the outline (10), which is then present in the EDP in digitized form, together with its marking points (12, 14, 16, 18, 20) is compared with length measurements (E1, E2) taken directly from the lasts and, if appropriate, is adapted to said length measurements in that

   the distance (El) between the heel centre (20) and the front bottom edge (24, 26) of the last is taken over identically to the last copy (10, 22) and, if appropriate, the line between the ball-of-the-foot point (14, 30) and the visible point (12, 28) is lengthened beyond the visible point (12, 28),

   the distance (E2) between the heel centre (20) and visible point (12, 28) is corrected, if appropriate, in a comparable manner,

   the distance (32) between the visible point (12, 28) and ball-of-the-foot point (14, 30) is maintained,

   the greatest distance between the ball-of-the-foot point (30) and the bottom region (34) of the last copy in the region of the ball of the foot is taken over,

   the reference points (26, 36, 40, 58, 74) which are still necessary for the position of the characteristic blank lines are entered in data form into the new last copy (22) obtained,

   the characteristic blank lines (70, 76, 80, 84) are determined automatically by the EDP on the basis of the model- and size-dependent mathematical functions present in the computer,

   the individual blanks (88, 90, 92, 94) are output in data form.
2. Method according to Claim 1, characterized in that

   the blanks (88, 90, 92, 94) are depicted graphically on a screen and/or output.
3. Method according to Claim 1 or 2, characterized in that

   the blanks (88, 90, 92, 94) are cut out of a flat material by a cutting plotter.
4. Method according to Claim 3, characterized in that

   the flat material is paper material.
5. Method according to one of the preceding claims, characterized in that

   the measurement of half the opening width (Derby width) is taken over to the last copy (22) and this measurement is marked off on the line (33), which corresponds to the widest location of the last, starting from the ball-of-the-foot point (30).
6. Method according to one of the preceding claims, characterized in that

   the characteristic values which characterize the foot size and/or foot shape, for example shoe size, hollow foot, normal foot or flat foot, heel height, largest wedge allowance, largest cork midsole, are taken into account during the determination of the characteristic blank lines (44, 48, 52, 70, 76, 82).
7. Method according to one of the preceding claims, characterized in that

   the new last copy (22) is stored in the EDP such that it can be called up in an individualized manner by person-related data being given.
8. Method according to one of the preceding claims, characterized in that

   based on the individual blanks (88, 90, 92, 94), the EDP computationally determines the individual lining parts (96) and depicts them if appropriate graphically on the screen, and the cutting plotter cuts them out of a flat material, for example paper material.

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