Shoe last, method for manufacturing a shoe last, and method for manufacturing a shoe upper

Abstract

The present invention provides a user-specific shoe last, a method for manufacturing the shoe last, and a method for manufacturing a shoe upper, which can be easily manufactured without using large-scale equipment. The shoe last (1) for forming the shoe upper of a shoe includes: a foot length forming member (20) that defines the shape of the shoe last (1) in at least the length direction of the shoe; and a plurality of foot width forming members (40) that define the shape of the shoe last (1) in at least the width direction of the shoe and are assembled to the foot length forming member (20).

Description

Technical Field

[0001] The present disclosure relates to a shoe last, a method for manufacturing a shoe last, and a method for manufacturing a shoe upper. Background Art

[0002] When manufacturing shoes, a shoe last (shoe mold) is used to cover the fabric constituting the shoe upper in order to form the shoe upper into a specific shape.

[0003] U.S. Patent Application Publication No. 2018 / 0014609 discloses manufacturing footwear within a portable housing. U.S. Patent Application Publication No. 2016 / 0206049 discloses a shoe last preform capable of being reshaped by a shape memory polymer. Chinese Patent No. 109732913 discloses forming a shoe last by three-dimensional (3D) printing. Summary of the Invention

[0004] When manufacturing customized shoes according to the user's foot, a dedicated shoe last reflecting the shape of each person's foot is manufactured. When manufacturing a user-specific shoe last using conventional methods, dedicated large-scale machinery is used, which is time-consuming and costly.

[0005] The present disclosure provides a user-specific shoe last that can be easily manufactured without using large-scale equipment, a method for manufacturing the shoe last, and a method for manufacturing a shoe upper using the shoe last.

[0006] According to one aspect of the present disclosure, there is provided a shoe last for shaping a shoe upper constituting a shoe. The shoe last includes: a foot length forming member that defines the shape of the shoe last in at least the length direction of the shoe; and a plurality of foot width forming members that define the shape of the shoe last in at least the width direction of the shoe and are assembled to the foot length forming member.

[0007] According to one aspect of the present disclosure, there is provided a method for manufacturing a shoe last for shaping a shoe upper constituting a shoe. The method for manufacturing the shoe last includes the following steps. The first step is a step of preparing a foot length forming member and a plurality of foot width forming members, the foot length forming member defining the shape of the shoe last in at least the length direction of the shoe, and the plurality of foot width forming members defining the shape of the shoe last in at least the width direction of the shoe. The second step is a step of assembling the foot width forming members to the foot length forming member.

[0008] According to one aspect of the present disclosure, there is provided a method for manufacturing a shoe upper. The method for manufacturing the shoe upper includes the following steps. The first step is a step of covering the pre-formed shoe upper including a fiber sheet containing heat-shrinkable yarn on the shoe last. The second step is a step of heating the pre-formed shoe upper to make it conform to the shape of the shoe last to form a post-formed shoe upper.

[0009] The above and other objects, features, aspects and advantages of the present invention will become apparent from the following detailed description of the present invention in connection with the accompanying drawings. Description of the Drawings

[0010] Figure 1 FIG. is a view showing a case where a user's foot is photographed to obtain a foot shape model.

[0011] Figure 2 FIG. is a perspective view of the foot shape model.

[0012] Figure 3 FIG. is a perspective view of the shoe last model.

[0013] Figure 4 FIG. is a perspective view of the shoe last cross-section model.

[0014] Figure 5 FIG. is a plan view of the shoe last cross-section model.

[0015] Figure 6 FIG. is a perspective view showing only the foot length forming model in the shoe last cross-section model.

[0016] Figure 7 FIG. is a perspective view showing only the foot width forming model in the shoe last cross-section model.

[0017] Figure 8 FIG. is a schematic view showing a mode in which the shoe last cross-section model is arranged in the base member.

[0018] Figure 9 FIG. is a schematic view showing an example in which the base member constitutes a part of the packaging material.

[0019] Figure 10 FIG. is a side view of the foot length forming member.

[0020] Figure 11 FIG. is a view showing Figure 9 the enlarged view of the area XI shown.

[0021] Figure 12 FIG. is an enlarged view near the bottom of the engaging groove formed in the foot length forming member.

[0022] Figure 13 FIG. is a front view of the foot width forming member.

[0023] Figure 14 FIG. is an enlarged view near the bottom of the engaging groove formed in the foot width forming member.

[0024] Figure 15 FIG. is a perspective view of the shoe last.

[0025] Figure 16 FIG. is a schematic view showing a first example of the position recognition portion.

[0026] Figure 17 It is a schematic diagram showing a second example of the position recognition unit.

[0027] Figure 18 It is a schematic diagram showing a third example of the position recognition unit.

[0028] Figure 19 It is a perspective view showing only the foot width forming member in the shoe last of the second embodiment.

[0029] Figure 20 It is a side view showing only the foot width forming member in the shoe last of the third embodiment.

[0030] Figure 21 It is an exploded perspective view of the shoe last of the fourth embodiment.

[0031] Figure 22 It is a perspective view of the shoe last of the fourth embodiment.

[0032] Figure 23 It is a side view of the shoe last of the fourth embodiment.

[0033] Figure 24 It is an exploded perspective view of the foot length forming member of the fifth embodiment.

[0034] Figure 25 It is a side view of the foot length forming member of the fifth embodiment.

[0035] Figure 26 It is a diagram showing Figure 25 the enlarged view of the region XXVI shown in

[0036] Figure 27 It is a side view of the shoe last of the fifth embodiment.

[0037] Figure 28 It is an exploded perspective view of the shoe last of the sixth embodiment.

[0038] Figure 29 It is a perspective view of the shoe last of the sixth embodiment.

[0039] Figure 30 It is a perspective view of the shoe last of the seventh embodiment.

[0040] Figure 31 It is a perspective view of the position changing unit.

[0041] Figure 32 It is a perspective view of the shoe last with the position of the position changing unit changed.

[0042] Figure 33 It is a plan view of the shoe last with the position of the position changing unit changed.

[0043] Figure 34 This is a perspective view of the shoe last of the eighth embodiment.

[0044] Figure 35 This is a side view of the shoe last covered by the covering body.

[0045] Figure 36 This is a perspective view of the shoe last of the ninth embodiment.

[0046] Figure 37 This is a partial sectional view of the shoe last along the Figure 36 XXXVII - XXXVII line shown in

[0047] Figure 38 This is a partial sectional view of the shoe last including the spherical front cover.

[0048] Figure 39 This is a perspective view of the shoe last of the tenth embodiment.

[0049] Figure 40 This is a side view of the shoe last of the tenth embodiment.

[0050] Figure 41 This is a perspective view showing the state of covering the pre - formed upper on the shoe last.

[0051] Figure 42 This is a schematic view showing the process of heating the pre - formed upper covering the shoe last. Detailed Embodiments

[0052] Hereinafter, the embodiments will be described based on the drawings. In the following description, the same reference numerals are given to the same components. The names and functions of these components are also the same. Therefore, detailed descriptions of these components will not be repeated.

[0053] The shoe last (shoe mold) of the embodiments described below is mainly a custom - made shoe last for shoes that fit the user's foot. However, the shoe last of the embodiments can also be applied to shoe lasts for mass - produced shoes.

[0054] [First Embodiment]

[0055] Figure 1 This is a view showing the situation of photographing the user's foot F in order to obtain the foot shape model FM. As Figure 1 shown, a portable terminal such as a smartphone P or a digital camera is used to photograph the user's foot F to obtain image data of the foot F. The image data of the foot F can be photographed in a store visited by the user. The store can be a fixed store or a mobile store using a car or a trailer, etc. Alternatively, the image data of the foot F can also be photographed at the user's home. The image data obtained by the user photographing their own foot F can be sent to the server of the shoe manufacturer.

[0056] Figure 2It is a perspective view of the foot shape model FM. Figure 2 The foot shape model FM shown is a three-dimensional foot shape model generated based on the measurement data of each part of the user's foot F obtained from the image data of the foot F. For example, when using the smartphone P to photograph the user's foot F, the foot shape model FM can be generated based on the image data by software pre-installed in the smartphone P. Alternatively, the foot shape model FM can be generated by performing calculations using both the photographed image data and the data in the server used by the shoe manufacturer.

[0057] The foot shape model FM can be formed into a shape identical to that of the user's foot F. Or, for design or functional reasons, specific parts of the foot shape model FM can be modified in terms of the required dimensions relative to the shape of the user's foot F.

[0058] Figure 3 It is a perspective view of the shoe last model 100. Figure 3 The shown shoe last model 100 is based on Figure 2 the shown foot shape model FM and is a shoe last model customized according to the shape of the user's foot F. By forming the shoe upper using a shoe last made in accordance with the shoe last model 100, a customized shoe for the user can be manufactured.

[0059] Figure 4 It is a perspective view of the shoe last cross-section model 110. Figure 5 It is a plan view of the shoe last cross-section model 110. As Figure 4 and Figure 5 shown, the shoe last cross-section model 110 is formed by a foot length forming model 120 and a foot width forming model 140. The foot length forming model 120 corresponds to the cross-section along the Figure 3 length direction of the shown shoe last model 100. The foot width forming model 140 corresponds to the cross-section along the Figure 3 width direction of the shown shoe last model 100.

[0060] In this specification, the length direction refers to the direction along the straight line connecting the foremost end on the toe side and the rearmost end on the heel side of the shoe or shoe last when viewed from above. The width direction refers to the direction orthogonal to the length direction when viewed from above. The height direction refers to the direction orthogonal to the plane defined by the length direction and the width direction.

[0061] The shoe last cross-section model 110 is formed as a combination of a plurality of foot length forming models 120 extending along the length direction and a plurality of foot width forming models 140 extending along the width direction. Figure 6 It is a perspective view showing only the foot length forming model 120 in the shoe last cross-section model 110. Figure 7 It is a perspective view showing only the foot width forming model 140 in the shoe last cross-section model 110. In Figures 4 - 7In the illustrated embodiment, a plurality of foot length forming models 120 are arranged in parallel at equal intervals. A plurality of foot width forming models 140 are arranged in parallel at equal intervals.

[0062] Figure 8 FIG. is a schematic view showing a mode in which a shoe last cross-sectional model 110 is disposed on a base member 10. The base member 10 has a flat plate shape and is, for example, made of paper. The base member 10 can also be cardboard with high reusability. Alternatively, the base member 10 is, for example, a resin flat plate. The base member 10 can be a thermoplastic resin or an integrated material such as cork or felt.

[0063] As Figure 8 shown, the shoe last cross-sectional model 110, specifically, a plurality of foot length forming models 120 and a plurality of foot width forming models 140 are disposed on the base member 10. By closely arranging the plurality of foot length forming models 120 and the plurality of foot width forming models 140 on the base member 10, the gap between the foot length forming model 120 and the foot width forming model 140 is reduced, and the waste amount of the base member 10 when cutting the fittings constituting the shoe last from the base member 10 can be reduced. Nesting technology can be utilized to adjust the arrangement of the foot length forming model 120 and the foot width forming model 140 on the base member 10. Nesting can be automatically performed using dedicated software.

[0064] By processing the base member 10 along the foot length forming model 120 and the foot width forming model 140 disposed on the base member 10, fittings constituting the shoe last, specifically, a foot length forming member 20 and a foot width forming member 40 described below, are formed. For example, the foot length forming member 20 and the foot width forming member 40 can be formed by cutting the base member 10 using a laser cutter or the like. The foot length forming member 20 and the foot width forming member 40 formed from one base member 10 have a plate shape and the same thickness.

[0065] Figure 9 FIG. is a schematic view showing an example in which the base member 10 constitutes a part of a packaging material. When the base member 10 is made of cardboard, the base member 10 can constitute a packaging material for packaging shoes, specifically, a shoe box 12. In such a case, the foot length forming member 20 and the foot width forming member 40 cut from the base member 10 constitute a part (such as an inner box, etc.) of the shoe box 12.

[0066] Figure 10 FIG. is a side view of the foot length forming member 20. Figure 11 It is to Figure 9 FIG. is an enlarged view of the region XI shown. Figure 12 FIG. is an enlarged view near the groove bottom 32 of the engaging groove 30 formed in the foot length forming member 20. In Figures 10 - 12Here, a specific one of the plurality of foot length forming members 20 formed by cutting from the base member 10 in accordance with a plurality of foot length forming models 120 will be described as an example.

[0067] Since the base member 10 has a flat plate shape and the foot length forming member 20 is formed by cutting from the base member 10, the foot length forming member 20 also has a plate shape. The foot length forming member 20 extends along the length direction of the shoe last. The foot length forming member 20 at least defines the shape of the shoe last in the length direction. The foot length forming member 20 defines the shape of the shoe last in the length direction and the height direction.

[0068] A plurality of engaging grooves 30 are formed in the foot length forming member 20. The engaging grooves 30 are arranged at equal intervals along the length direction. Each engaging groove 30 has a slit-like shape extending along the height direction. The engaging groove 30 extends downward from the upper edge of the foot length forming member 20. The engaging groove 30 includes an opening 31 that opens at the upper edge of the foot length forming member 20 and includes a groove bottom 32 at an intermediate position that does not reach the lower edge of the foot length forming member 20. As Figure 11 shown, the extension length of the engaging groove 30 may be half of the length from the upper edge to the lower edge of the foot length forming member 20 at the position where the engaging groove 30 is formed. As Figure 12 shown, the engaging groove 30 may include a tapered portion 33 that reduces the groove width as it approaches the groove bottom 32.

[0069] Figure 13 is a front view of the foot width forming member 40. Figure 14 is an enlarged view near the groove bottom 52 of the engaging groove 50 formed in the foot width forming member 40. In Figure 13 、 Figure 14 Here, a specific one of the plurality of foot width forming members 40 formed by cutting from the base member 10 in accordance with a plurality of foot width forming models 140 will be described as an example.

[0070] Since the base member 10 has a flat plate shape and the foot width forming member 40 is formed by cutting from the base member 10, the foot width forming member 40 also has a plate shape. The foot width forming member 40 extends along the width direction of the shoe last. The foot width forming member 40 at least defines the shape of the shoe last in the width direction. The foot width forming member 40 defines the shape of the shoe last in the width direction and the height direction. Figure 13 The foot width forming member 40 shown has a substantially fan-shaped shape.

[0071] A plurality of engaging grooves 50 are formed in the foot width forming member 40. The engaging grooves 50 are arranged at equal intervals along the width direction. Each engaging groove 50 has a slit-like shape extending in the height direction. The engaging groove 50 extends upward from the lower edge of the foot width forming member 40. The engaging groove 50 includes an opening 51 that opens at the lower edge of the foot width forming member 40 and includes a groove bottom 52 at an intermediate position that does not reach the upper edge of the foot width forming member 40. The extension length of the engaging groove 50 may be half of the length from the upper edge to the lower edge of the foot width forming member 40 at the position where the engaging groove 50 is formed. As Figure 14 shown, the engaging groove 50 may include a tapered portion 53 that reduces the groove width as it approaches the groove bottom 52.

[0072] Figure 15 is a perspective view of the shoe last 1. The foot width forming member 40 is assembled in the engaging groove 30 formed in the foot length forming member 20, the foot length forming member 20 is assembled in the engaging groove 50 formed in the foot width forming member 40, and a plurality of foot length forming members 20 and a plurality of foot width forming members 40 are alternately assembled, thereby forming the shoe last 1. The plurality of foot length forming members 20 are arranged along the width direction of the shoe last 1. The plurality of foot width forming members 40 are arranged along the length direction of the shoe last 1.

[0073] Since the engaging grooves 30 are formed at equal intervals along the length direction in the foot length forming member 20, the plurality of foot width forming members 40 are arranged at equal intervals along the length direction. Since the engaging grooves 50 are formed at equal intervals along the width direction in the foot width forming member 40, the plurality of foot length forming members 20 are arranged at equal intervals along the width direction.

[0074] Figure 16 is a schematic diagram showing a first example of the position recognition portion 60. The foot length forming member 20 and the foot width forming member 40 may each include a position recognition portion 60 that shows the arrangement of the foot length forming member 20 and the foot width forming member 40 in the shoe last 1. In Figure 16 and those described below Figure 17 、 Figure 18 shown in the example, the position recognition portion 60 provided in the foot width forming member 40 is shown. In Figures 16 - 18 , for simplicity, the illustration of the engaging groove 50 formed in the foot width forming member 40 is omitted.

[0075] The position recognition unit 60 includes: the character information "L", indicating that the foot width forming member 40 is a fitting that constitutes the left shoe last 1; the character information "H", indicating the foot width forming member 40; and the character information "6", indicating that the foot width forming member 40 is the sixth fitting starting from the toe. In addition, the position recognition unit 60 includes a mark. By being consistent with the orientation of the mark, the foot width forming member 40 assumes the correct orientation, and it is easy to see the position recognition unit 60, so that each character information can be correctly identified.

[0076] Figure 16 The position recognition unit 60 shown can be formed by laser printing. In such a case, while cutting the foot length forming member 20 and the foot width forming member 40 from the base member 10, the position recognition unit 60 can be engraved on each of the foot length forming member 20 and the foot width forming member 40. The position recognition unit 60 can also be printed on the foot length forming member 20 and the foot width forming member 40 using ink. The position recognition unit 60 can also be provided by attaching labels to the foot length forming member 20 and the foot width forming member 40.

[0077] Figure 17 is a schematic diagram showing a second example of the position recognition unit 60. As Figure 17 shown, the position recognition unit 60 can be implemented by encrypted information. Figure 17 The position recognition unit 60 shown is a matrix-type two-dimensional code that displays information in a vertical and horizontal mosaic pattern using white and black units, and can also be other types of two-dimensional codes, or one-dimensional codes such as barcodes.

[0078] Figure 18 is a schematic diagram showing a third example of the position recognition unit 60. As Figure 18 shown, the position recognition unit 60 can be implemented by an integrated circuit (IC) chip. The encrypted information shown by Figure 17 or the position recognition unit 60 implemented by the IC chip shown by Figure 18 can be preset in the base member 10, and the foot length forming member 20 and the foot width forming member 40 are cut from the base member 10 in such a way that each includes the position recognition unit 60. Alternatively, the position recognition unit 60 can also be attached to the cut foot length forming member 20 and foot width forming member 40.

[0079] The position recognition unit 60 is not limited to the above examples. For example, by coloring the engaging groove 30 of the foot length forming member 20 and the foot width forming member 40 assembled in the engaging groove 30 and combining the same colors with each other, the appropriate foot width forming member 40 can be assembled in the appropriate engaging groove 30.

[0080] The assembly of the foot length forming member 20 and the foot width forming member 40 can be carried out manually by a person or automatically by a robot. By having the robot read the configuration information of the foot length forming member 20 and the foot width forming member 40 recorded in the position recognition unit 60, or by identifying the configuration of the position recognition unit 60 in the foot length forming member 20 and the foot width forming member 40, the respective foot length forming members 20 and foot width forming members 40 can be reliably assembled in a suitable configuration and orientation.

[0081] The characteristic structures and functions of the present embodiment are listed below, and there may be some partial repetitions in the description above.

[0082] As Figure 15 shown, the shoe last 1 of the embodiment includes a foot length forming member 20 and a foot width forming member 40. The foot length forming member 20 defines at least the shape of the shoe last 1 in the length direction. The foot width forming member 40 defines at least the shape of the shoe last 1 in the width direction and is assembled to the foot length forming member 20.

[0083] Based on the foot model FM of the target user, the foot length forming member 20 and the foot width forming member 40 are prepared by cutting from the sheet-like base member 10. By assembling the foot width forming member 40 to the foot length forming member 20, the shoe last 1 is formed. It is not necessary to use large-scale equipment to prepare the foot length forming member 20 and the foot width forming member 40, and to assemble the foot width forming member 40 to the foot length forming member 20. Therefore, the shoe last 1 dedicated to the target user can be easily manufactured.

[0084] As Figures 16 - 18 shown, at least one of the foot length forming member 20 and the foot width forming member 40 may include a position recognition unit 60 that shows the configuration of the foot length forming member 20 and the foot width forming member 40 in the shoe last 1. By referring to the position recognition unit 60, the assembly positions of the respective foot length forming members 20 and foot width forming members 40 can be easily identified, so that the assembly speed of the shoe last 1 can be increased. Therefore, the working efficiency in manufacturing the shoe last 1 can be improved.

[0085] As Figure 10 、 Figure 15 shown, the foot length forming member 20 may have a plate-like shape. As Figure 13 、 Figure 15 shown, the foot width forming member 40 may have a plate-like shape. All the fittings constituting the shoe last 1, that is, the two members of the foot length forming member 20 and the foot width forming member 40, can be formed by cutting from the sheet-like base member 10. Therefore, the storage space of the members constituting the shoe last 1 can be reduced. When delivering the base member 10, or the cut foot length forming member 20 and foot width forming member 40, since the shape is plate-like, the packaging can be reduced, so that the delivery cost can be reduced.

[0086] As shown Figures 10 - 12 in FIG. 1, an engaging groove 30 can be formed in the foot length forming member 20. As shown Figure 15 in FIG. 2, the foot width forming member 40 can be assembled into the engaging groove 30 of the foot length forming member 20. By inserting the foot width forming member 40 into the engaging groove 30 to assemble the foot length forming member 20 and the foot width forming member 40, the three-dimensional shoe last 1 can be easily manufactured. In addition, when moving the assembled shoe last 1, the misalignment between the foot length forming member 20 and the foot width forming member 40 can be suppressed. By appropriately adjusting the groove depth of the engaging groove 30, the shape of the shoe last 1 assembled by inserting the foot width forming member 40 into the engaging groove 30 of the foot length forming member 20 in the height direction can be determined.

[0087] As shown Figure 12 in FIG. 3, the engaging groove 30 of the foot length forming member 20 may include a tapered portion 33, and the groove width of the tapered portion 33 decreases as it approaches the groove bottom 32. As shown Figure 14 in FIG. 4, the engaging groove 50 of the foot width forming member 40 may include a tapered portion 53, and the groove width of the tapered portion 53 decreases as it approaches the groove bottom 52. By inserting the foot width forming member 40 into the engaging groove 30 and inserting the foot length forming member 20 into the engaging groove 50 to form the shoe last 1, the misalignment between the foot length forming member 20 and the foot width forming member 40 can be suppressed when moving the assembled shoe last 1. By forming the tapered portions 33 and 53 in the engaging groove 30 and the engaging groove 50 to widen the groove width, the foot length forming member 20 and the foot width forming member 40 can be easily assembled. By narrowing the groove width at the groove bottom 32 and the groove bottom 52, the foot length forming member 20 and the foot width forming member 40 can be properly positioned and correctly assembled.

[0088] Other engaging members such as protrusions can also be provided in the engaging groove 30 and the engaging groove 50 to replace the tapered portions 33 and 53. By the protrusions in the engaging groove 30 and the protrusions in the engaging groove 50 engaging with each other, the misalignment between the foot length forming member 20 and the foot width forming member 40 can be suppressed. In addition, the foot length forming member 20 and the foot width forming member 40 can be correctly assembled.

[0089] As shown Figure 8 , Figure 9 in FIGS. 5 and 6, the foot length forming member 20 and the foot width forming member 40 can be made of paper. By making the fittings constituting the shoe last 1 of paper, the shoe last 1 can be made lightweight. By recycling and reusing the shoe last 1 after manufacturing shoes, the environmental load can be reduced. If the foot length forming member 20 and the foot width forming member 40 are made of cardboard, they can be restored to a fibrous state with water, and the environmental load of the recycling process is also small. The foot length forming member 20 and the foot width forming member 40 can also be made of thermoplastic resin. In this case, after use, the shoe last 1 can be heated and melted for reuse, so the environmental load can be reduced.

[0090] As Figure 9 shown, the foot length forming member 20 and the foot width forming member 40 can form a part of the packaging material (shoe box 12) for packaging shoes. By using a part of the material that has been used as a packaging material, such as cardboard, to make the shoe last 1, there is no need to add new materials for making the shoe last 1, and there is no material loss. Therefore, cost can be reduced and the environmental load can be decreased.

[0091] By incorporating them into the packaging material, the user can take the foot length forming member 20 and the foot width forming member 40 home. The user can assemble the shoe last 1 at home, so that it can be used when ordering the same shoes next time, or the assembled shoe last 1 can be used flexibly as a shoe tree, or it can be kept as a record of the growth of a child.

[0092] As Figures 1 - 3 shown, a foot shape model FM is generated from the image data of photographing the user's foot F, and a shoe last model 100 is generated based on the foot shape model FM. As Figures 4 - 7 shown, by obtaining the cross-sectional shape in the width direction of the shoe last model 100, a foot width forming model 140 for forming the foot width forming member 40 is generated. As Figure 8 , Figure 13 shown, the foot width forming member 40 is formed by processing the base member 10 based on the foot width forming model 140. The foot length forming member 20 can also be formed by the same method. Thus, the shoe last 1 corresponding to the shape of the user's foot F can be surely formed.

[0093] In the description of the above embodiment, an example of making the foot length forming member 20 and the foot width forming member 40 by cutting the base member 10 has been described. The foot length forming member 20 and the foot width forming member 40 are not limited to being cut from the plate-shaped base member 10, and for example, they can also be formed by other methods such as forming using a 3D printer.

[0094] Figure 15 The shoe last 1 shown is formed by assembling a flat plate-shaped foot length forming member 20 extending along the length direction and a flat plate-shaped foot width forming member 40 extending along the width direction in an orthogonal manner to each other. The foot length forming member 20 does not have to be a flat plate shape extending along the length direction, and the foot width forming member 40 does not have to be a flat plate shape extending along the width direction. For example, the foot length forming member 20 can also be a shape that bends in a manner of gradually increasing the interval toward the toe side of the foot, and the foot width forming member 40 can also be a shape that bends in a manner orthogonal to each of the bent foot length forming members 20. The directions of the cross-sections of the foot length forming model 120 and the foot width forming model 140 can be determined based on the curvature of the foot.

[0095] [Second Embodiment]

[0096] Figure 19 This is a perspective view showing only the foot-width forming member 40 in the shoe last 1 of the second embodiment. As Figure 19 shown, the front foot portion and the mid-foot portion are defined for the shoe last 1. For example, the area corresponding to the toes to the metatarsophalangeal (MTP) joint of the wearer in the longitudinal direction of the shoe can be defined as the front foot portion, and the area corresponding to the MTP joint to the cuneiform bone of the wearer can be defined as the mid-foot portion. Additionally, for example, when the foremost end on the toe side of the shoe last 1 is set as the 0% position and the rearmost end on the heel side is set as the 100% position, the range from the 0% position to the 30% - 35% position in the longitudinal direction of the shoe last 1 can be defined as the front foot portion, and the range up to the 50% - 55% position behind the front foot portion can be defined as the mid-foot portion.

[0097] In the shoe last 1 of the second embodiment, the interval between adjacent foot-width forming members 40 is smaller in the mid-foot portion of the shoe last 1 than in the front foot portion of the shoe last 1. The foot shape difference is small for each user in the front foot portion, and the foot shape difference is relatively large for each user in the mid-foot portion. In the mid-foot portion where the foot shape of each user is likely to vary, by reducing the interval between adjacent foot-width forming members 40, the accuracy of the shape of the mid-foot portion of the shoe last 1 can be improved.

[0098] As described above, by coarsely and densely setting the interval of the foot-width forming members 40 in the longitudinal direction, a shoe last 1 that accurately reflects the foot shape of the user can be manufactured. The interval of the foot-width forming members 40 in the front foot portion and the rear foot portion where the foot shape of each user is not likely to vary is not made too small, and the number of components is suppressed, so the manufacturing speed of the shoe last 1 can be increased.

[0099] [Third Embodiment]

[0100] Figure 20 This is a side view showing only the foot-width forming member 40 in the shoe last 1 of the third embodiment. Similar to Figure 19 the above, the front foot portion and the mid-foot portion are defined for the Figure 20 shown shoe last 1. In the shoe last 1 of the third embodiment, the interval between adjacent foot-width forming members 40 is smaller in the mid-foot portion of the shoe last 1 than in the front foot portion of the shoe last 1. Also, the thickness of the foot-width forming member 40 is smaller in the mid-foot portion of the shoe last 1 than in the front foot portion of the shoe last 1.

[0101] Due to the small thickness of the foot-width forming member 40 in the mid-foot portion, it is easy to reduce the interval between adjacent foot-width forming members 40 in the mid-foot portion. Thereby, the accuracy of the shape of the mid-foot portion of the shoe last 1 can be further improved, and thus a shoe last 1 that more accurately reflects the foot shape of the user can be manufactured.

[0102] As Figure 20As shown, the interval between adjacent foot width forming members 40 can also be reduced at the heel portion of the shoe last 1. Since there are also large differences in the foot shape at the heel portion for each user, by reducing the interval between adjacent foot width forming members 40 at the heel portion as well, the accuracy of the shape of the shoe last 1 can be further improved.

[0103] [Fourth Embodiment]

[0104] Figure 21 Fig. is an exploded perspective view of the shoe last 1 of the fourth embodiment. Figure 22 Fig. is a perspective view of the shoe last 1 of the fourth embodiment. Figure 23 Fig. is a side view of the shoe last 1 of the fourth embodiment. In the first embodiment, an example in which the foot length forming member 20 has a plate shape has been described, but the shape of the foot length forming member 20 is not limited to a plate shape. As Figures 21 - 23 shown, the foot length forming member 20 may also have a rod shape extending along the length direction of the shoe or the shoe last 1. A through hole 42 through which the rod-shaped foot length forming member 20 penetrates can be formed in the foot width forming member 40.

[0105] By making the foot length forming member 20 rod-shaped, forming a through hole 42 in the plate-shaped foot width forming member 40, and passing the rod-shaped foot length forming member 20 through the through hole 42, the foot width forming member 40 can be assembled to the foot length forming member 20. Thereby, the assembly of the foot length forming member 20 and the foot width forming member 40 can be performed more simply and at a higher speed than in the first embodiment.

[0106] When disassembling the shoe last 1, it can be simply disassembled by pulling out the foot length forming member 20 from the through hole 42 of the foot width forming member 40. Thus, it is easy to reuse the foot width forming member 40. The foot length forming member 20 can be made of paper or resin and reused in the same manner as the foot width forming member 40, or the foot length forming member 20 can be directly reused.

[0107] [Fifth Embodiment]

[0108] Figure 24 Fig. is an exploded perspective view of the foot length forming member 20 of the fifth embodiment. Figure 25 Fig. is a side view of the foot length forming member 20 of the fifth embodiment. Figure 26 Fig. is a view showing an enlarged view of the region XXVI shown in Figure 25 . Figure 27It is a side view of the shoe last 1 of the fifth embodiment. Similar to the fourth embodiment, the shoe last 1 of the fifth embodiment includes a rod-shaped foot length forming member 20 and a plate-shaped foot width forming member 40. A plurality of foot width forming members 40 are arranged along the length direction of the shoe or the shoe last 1. The shoe last 1 further includes a spacer 24 disposed between adjacent foot width forming members 40. The spacer 24 has an annular shape. The spacer 24 determines the interval between adjacent foot width forming members 40.

[0109] When passing the rod-shaped foot length forming member 20 through the through hole 42 of the foot width forming member 40, it is required to manage the gap size between adjacent foot width forming members 40. By separately disposing the spacer 24 between adjacent foot width forming members 40 and the foot length forming member 20, the assembly position of the foot width forming member 40 relative to the foot length forming member 20 can be controlled. Therefore, the foot width forming members 40 can be arranged at a specified interval. For example, by making all the spacers 24 have the same shape, the foot width forming members 40 can be arranged at equal intervals, and by shortening the spacer 24 in the midfoot part, the interval between the foot width forming members 40 can be narrowed.

[0110] Figure 27 The shown shoe last 1 can be formed by inserting the foot width forming member 40 into the groove-shaped space between adjacent spacers 24 for an assembly formed by assembling the spacer 24 to the foot length forming member 20 shown in Figure 25 , Figure 26 Or the shown shoe last 1 can be formed by alternately installing the foot width forming member 40 and the spacer 24 on the foot length forming member 20. Figure 27

[0111] When forming the through hole 42 in the plate-shaped foot width forming member 40, a flanging process of forming a cylindrical wall around the through hole 42 is implemented, whereby a structure integrating the foot width forming member 40 and the spacer 24 can be formed. In this case, the shown shoe last 1 can be formed by sequentially installing the foot width forming member 40 on the foot length forming member 20, and it is not necessary to separately assemble the spacer 24 and the foot width forming member 40. Therefore, the operation of forming the shoe last 1 can be simplified, and the manufacturing speed can be increased. Figure 27

[0112] [Sixth Embodiment]

[0113] Figure 28 It is an exploded perspective view of the shoe last 1 of the sixth embodiment. Figure 29 It is a perspective view of the shoe last 1 of the sixth embodiment. The foot length forming member 20 may have a three-dimensional shape in addition to the plate-shaped and rod-shaped shapes described so far. Figure 28 ​​The foot length forming member 20 shown includes a base portion 26 and a core portion 28. The core portion 28 can be formed hollow or solid. Engagement grooves 30 are formed on the surface of the core portion 28. As Figure 29 shown, by assembling the foot width forming member 40 in the engagement grooves 30, the shoe last 1 is formed. Figure 28 , Figure 29 The foot width forming member 40 shown has a shape in which a part of a ring is cut out.

[0114] The base portion 26 has a shape corresponding to the upper surface shape of the sole that joins the upper. The core portion 28 has a three-dimensional shape obtained by reducing the shoe last model 100 ( Figure 3 ). The base portion 26 and the core portion 28 do not change shape according to each user and are prepared in advance as common members. Instead of cutting out all the cross-sections of the shoe last model 100 to make the foot width forming model 140 as in the first embodiment, the shape of the shoe last 1 is determined to some extent by the base portion 26 and the core portion 28 in advance. The plate-shaped foot width forming member 40 is inserted into the engagement grooves 30 provided in the core portion 28, and the shoe last 1 corresponding to the final shape of the foot model FM of the user is formed.

[0115] As described above, the shoe last 1 is formed by fitting the foot width forming member 40 into the three-dimensional core portion 28. Thus, it is easy to assemble the foot width forming member 40 to the foot length forming member 20. Since the area of the foot width forming member 40 formed to fit the foot shape of the user is small, the area of the base member 10 used to cut out the foot width forming member 40 can be reduced, and a user-specific shoe last can be efficiently manufactured with less material. The engagement grooves 30 formed in the core portion 28 extend along the surface of the three-dimensional core portion 28 and have the same curvature as the surface of the core portion 28, thereby improving the reproducibility of the shoe last 1 to the foot shape of the user.

[0116] [Seventh Embodiment]

[0117] Figure 30 is a perspective view of the shoe last 1 of the seventh embodiment. In the description of the foregoing embodiments, the foot width forming member 40 is assembled to the foot length forming member 20 across the entire length of the shoe last 1 in the length direction to form the shoe last 1 suitable for the foot shape of the user, but it is not necessary to assemble the foot width forming member 40 across the entire length of the shoe last 1.

[0118] Figure 30 The shoe last 1 shown includes a common portion 70 with an unchanged shape and position in the toe portion and the portion from the ankle portion to the arch portion of the foot corresponding to the midfoot portion to the heel portion. In addition, the shoe last 1 includes a position changing portion 80 with an unchanged shape and a changeable position in the portions corresponding to the front ends of the first toe and the fifth toe of the foot. Therefore, the shoe last 1 includes a structure in which the foot length forming member 20 and the foot width forming member 40 are assembled to each other only in a part corresponding to the midfoot portion on the dorsal side of the foot.

[0119] That is, the foot length forming member 20 does not have to define the shape of the shoe last 1 across the entire length of the shoe last 1 in the length direction. It is sufficient that the foot length forming member 20 defines the shape of at least a part of the shoe last 1 in at least the length direction of the shoe last 1. Similarly, the foot width forming member 40 does not have to define the shape of the shoe last 1 across the entire width of the shoe last 1 in the width direction. It is sufficient that the foot width forming member 40 defines the shape of at least a part of the shoe last 1 in at least the width direction of the shoe last 1.

[0120] Figure 31 It is a perspective view of the position changing part 80. As Figure 31 shown, the position adjusting mechanism 82 connects a pair of left and right position changing parts 80. The position adjusting mechanism 82 changes the position of the position changing part 80 relative to the common part 70. In addition, the position adjusting mechanism 82 can fix the position changing part 80 after the position change to a specific position through a fitting structure, a screw locking structure, etc. For example, the position adjusting mechanism 82 may include a large-diameter tube, a small-diameter tube housed in the large-diameter tube and capable of reciprocating relative to the large-diameter tube, and a locking part for fixing the small-diameter tube relative to the large-diameter tube. The locking part can be a spring lock, a pin lock, a lock nut, etc.

[0121] Figure 32 It is a perspective view of the shoe last 1 with the position of the position changing part 80 changed. Figure 33 It is a plan view of the shoe last 1 with the position of the position changing part 80 changed. As Figure 32 、 Figure 33 shown, the position changing part 80 can change the width direction dimension of the shoe last 1 in the midfoot part. By changing the position of the position changing part 80 in such a way that the distance between a pair of left and right position changing parts 80 is increased by the position adjusting mechanism 82, the width direction dimension of the midfoot part of the shoe last 1 is increased. By changing the position of the position changing part 80 in such a way that the distance between a pair of left and right position changing parts 80 is narrowed by the position adjusting mechanism 82, the width direction dimension of the midfoot part of the shoe last 1 is decreased.

[0122] As described above, in the shoe last 1, by using the common part 70 for the parts where the shape of each user's foot is not likely to vary and the shape and position of the shoe last 1 do not need to be changed, the number of assembled parts is reduced, so the assembly time of the shoe last 1 can be shortened. By forming the parts where the differences in the foot shapes of each user are large and affect the fit of the shoes into user-specific ones by combining the foot length forming member 20 and the foot width forming member 40, the reproducibility of the user's foot shape can be improved.

[0123] By using the position changing part 80 for the parts where the shape is not likely to vary but the position may vary for each user, the assembly time of the shoe last 1 can be shortened. By only correcting the position of the existing parts, the shape of the shoe last 1 can be adjusted to fit the user's foot shape.

[0124] In Figures 30 - 33 , an example of the shoe last 1 in which the part from the midfoot to the heel part is formed in the form of the common part 70 has been described. Instead of the said example, the shoe last 1 also includes a position changing part in the heel part. The position changing part in the heel part may include the following position changing part, which is provided at the part that becomes the rearmost part of the heel, can reciprocate along the length direction of the shoe last 1, and can change the dimension in the length direction of the shoe last 1. The position changing part in the heel part may also include the following position changing part, which is provided at the part corresponding to the outer ankle and / or inner ankle of the foot on the side part of the rear foot part, can move along the width direction of the shoe last 1, and can change the dimension in the width direction of the rear foot part of the shoe last 1.

[0125] The position changing part in the heel part can move along the height direction in addition to the length direction and the width direction. The position changing part in the heel part can change the angle with respect to the common part 70. In such a case, a cavity part for allowing the movement of the position changing part may be formed above and / or below the position changing part in the heel part. After adjusting the position of the position changing part, an arbitrary filling material can be filled in the cavity part to fill the cavity part. The filling material can be formed to fit the shape of the user's foot F.

[0126] [Eighth Embodiment]

[0127] Figure 34 is a perspective view of the shoe last 1 of the eighth embodiment. In the shoe last 1 of the eighth embodiment, the common part 70 constitutes the bottom surface of the shoe last 1. The common part 70 has a shape corresponding to the shape of the upper surface of the sole that joins the upper surface formed according to the shoe last 1. A groove is formed in the common part 70, and the plate-shaped foot width forming member 40 is assembled in the groove. Figure 34 The shown common part 70 also has the function as the foot length forming member 20.

[0128] When the sole is formed by a mold, its shape is a fixed shape regardless of the shape of the user's foot. The shape of the upper surface of the sole to which the upper is joined is a fixed shape regardless of the shape of the user's foot. Since the shape of the bottom surface of the upper is fixed, the shape of the bottom surface of the shoe last 1 for forming the upper is also fixed. Therefore, by setting the shape of the bottom surface part of the shoe last 1 as the common part 70, the shape of the shoe last 1 can be stabilized.

[0129] Figure 35 is a side view of the shoe last 1 covered by the covering body 90. Figure 34 The shown shoe last 1 of the eighth embodiment, or the shoe last 1 of the first embodiment to the seventh embodiment described above, may be covered by the covering body 90 at least partially from the outside. As Figure 35 shown, the whole of the shoe last 1 can be covered by the covering body 90 from the outside. In as Figure 30In the case of the shoe last 1 in which only a part in the length direction includes the foot width forming member 40 as shown, the covering body 90 may be in a shape that covers only a part of the shoe last 1 and at least covers the assembly of the foot length forming member 20 and the foot width forming member 40. The covering body 90 may be in the form of a sheet as shown in Figure 35 or may also be in the form of a plate.

[0130] When the shoe last 1 is covered by the covering body 90, when forming the upper surface using the shoe last 1 of the usage embodiment, it is possible to suppress the influence of the gap formed between the foot length forming member 20 and the foot width forming member 40 on the shape of the formed upper surface. Therefore, it is possible to more surely form an upper surface of a specific shape.

[0131] As the covering body 90, for example, a film such as a polystyrene film that shrinks when heated can be used. In such a case, by covering the shoe last 1 with the film and then heating the film to deform the film, the covering body 90 that covers the surface of the shoe last 1 can be formed. When causing the covering body 90 to undergo thermal deformation, air (warm air) can be blown from the inside of the covering body 90. In such a case, it is possible to suppress the covering body 90 from excessively shrinking inward between the adjacent foot length forming member 20 and the adjacent foot width forming member 40, and thus the accuracy of forming the upper surface can be further improved.

[0132] The covering body 90 may be a metal foil represented by aluminum foil. In such a case, by covering the surface of the shoe last 1 with the metal, the thermal conductivity is improved, which is advantageous for the heat forming of the upper surface described below. Or the covering body 90 may be a sock.

[0133] [Ninth Embodiment]

[0134] Figure 36 is a perspective view of the shoe last 1 of the ninth embodiment. Figure 37 is along Figure 36 shown in the local cross-sectional view of the shoe last 1 taken along line XXXVII-XXXVII. Instead of the covering body 90 described with reference to Figure 35 , in the shoe last 1 of the ninth embodiment, a front cover 92 is inserted into the space divided by the foot length forming member 20 and the foot width forming member 40. In Figure 36 , for simplicity, the front cover 92 is only shown in a part of the space divided by the foot length forming member 20 and the foot width forming member 40, but ideally, the front cover 92 is provided at least at the outermost peripheral part of the shoe last 1, and more ideally, the front cover 92 is provided on the whole of the shoe last 1.

[0135] As shown in Figure 37 , the front cover 92 has a curved cross-section. The front cover 92 may have a local shape of a spherical surface. The front cover 92 is protrudingly arranged from the upper edges of the foot length forming member 20 and the foot width forming member 40.

[0136] By using the front cover 92, the outer surface of the shoe last 1 can be made into a smooth curved surface. When forming the shoe upper using the shoe last 1, it is possible to suppress the case where the end faces of the foot length forming member 20 and / or the foot width forming member 40 are transferred to the shoe upper, or the gap between the foot length forming member 20 and the foot width forming member 40 affects the shape of the shoe upper. Therefore, it is possible to more surely form a shoe upper with a specific shape.

[0137] Figure 38 is a partial cross-sectional view of the shoe last 1 including the spherical front cover 92. Instead of Figure 37 the front cover 92 having a curved surface shape shown, Figure 38 as shown in Figure 38 the front cover 92 is spherical. An example of the front cover 92 is a hollow sphere, but the front cover 92 may also be a solid sphere.

[0138] [Tenth Embodiment]

[0139] Figure 39 is a perspective view of the shoe last 1 of the tenth embodiment. Figure 40 is a side view of the shoe last 1 of the tenth embodiment. The shoe last 1 of the tenth embodiment, like the first to third embodiments, includes a plate-shaped foot length forming member 20 and a plate-shaped foot width forming member 40. The shoe last 1 of the tenth embodiment includes foot width forming members 40 arranged along the length direction of the shoe last 1 in the front foot part and the middle foot part, which are the same as those in the first to third embodiments.

[0140] The shoe last 1 of the tenth embodiment is characterized by the structure of the foot width forming member 40 in the part corresponding to the heel part of the foot. Specifically, in the part corresponding to the heel part of the foot, the foot width forming members 40 are arranged along the height direction of the shoe last 1. In the heel part of the shoe last 1, a plurality of engaging grooves 30 are formed in the foot length forming member 20 at equal intervals along the height direction. In the heel part of the shoe last 1, a plurality of foot width forming members 40 are assembled in the engaging grooves 30 and arranged at equal intervals along the height direction. In addition, the intervals may be equal intervals, or the intervals of the parts that particularly require precision may be set smaller than those of other parts.

[0141] In each foot width forming member 40 in the heel part, radial engaging grooves 50 are respectively formed. A plate-shaped engaging member 44 extending along the height direction is assembled in the radial engaging grooves 50. By combining a plurality of foot width forming members 40 and a plurality of engaging members 44 in a lattice pattern, the strength of the heel part of the shoe last 1 is improved.

[0142] The heel part has a relatively large difference in foot shape for each user. In addition, compared with other parts, the shape change of the unevenness on the foot surface of the heel part is large. By arranging a plurality of foot width forming members 40 along the height direction, compared with forming the heel part of the shoe last 1 using the foot width forming member 40 extending along the height direction, the reproducibility of the foot shape can be improved. Therefore, the accuracy of the shape of the shoe last 1 can be further improved, and a shoe last 1 that can more accurately reflect the foot shape of the user can be manufactured.

[0143] [Eleventh Embodiment]

[0144] In the eleventh embodiment, an example of a method for manufacturing the upper of the shoe last 1 described in the previous embodiments will be described. Figure 41 It is a perspective view showing a state where the pre-formed upper 200 is covered on the shoe last 1. For example, a material for the upper (pre-formed upper 200) including a fiber sheet containing heat-shrinkable yarn is prepared. The pre-formed upper 200 larger than the outer shape of the shoe last 1 is covered on the shoe last 1 to obtain Figure 41 the structure shown.

[0145] Figure 42 It is a schematic view showing a process of heating the pre-formed upper 200 covered on the shoe last 1. As Figure 42 shown, the shoe last 1 covered with the pre-formed upper 200 is housed inside the heating box 210. In this state, high-temperature steam 220 is released from the inner surface of the heating box 210. Thereby, the pre-formed upper 200 is steam-heated. Through the steam heating, the entire pre-formed upper 200 is uniformly heated. The heating causes the heat-shrinkable yarn to shrink, and thus the pre-formed upper 200 can be formed into a post-formed upper along the shape of the shoe last 1.

[0146] Through such a manufacturing process, a user-specific upper corresponding to the shape of the user's foot F can be manufactured without using large-scale equipment.

[0147] The heating box 210 can be a steam oven. In addition, the heating of the pre-formed upper 200 can be performed by hot air heating, warm water heating, etc. in addition to steam heating. The pre-formed upper 200 can also be locally heated instead of being heated as a whole. The post-formed upper obtained thereby can be attached to a separately manufactured sole by adhesion, heat sealing, etc.

[0148] During each of the above processes, or after all the processes are completed, the formation of the tongue, the processing of the shoe mouth, the installation of eyelets for passing through the shoelace, the installation of decorative components and labels, the printing of trademarks, the installation of the insole, etc. are appropriately performed, thereby manufacturing the shoes.

[0149] The manufacturing method of the shoe upper is not limited to the heat shrinkage of the fiber sheet containing heat shrinkable yarn. For example, various methods such as directly weaving fabric around the shoe last 1 or laminating with a 3D printer can also be adopted. The shoe last 1 of the embodiment can also be used in the forming process of the shoe upper known in the factory in the past.

[0150] (Abstract of the disclosure in the embodiment, etc.)

[0151] Summarizing the characteristic structures disclosed in the respective embodiments and their variations, it is as follows.

[0152] A shoe last according to one aspect of the present disclosure is used to form a shoe upper that constitutes a shoe. The shoe last includes: a foot length forming member that defines the shape of the shoe last in at least the length direction of the shoe; and a plurality of foot width forming members that define the shape of the shoe last in at least the width direction of the shoe and are assembled to the foot length forming member.

[0153] In the shoe last according to one aspect of the present disclosure, at least one of the foot length forming member and the foot width forming member may include a position identification portion that shows the arrangement of the foot length forming member and the foot width forming member in the shoe last.

[0154] In the shoe last according to one aspect of the present disclosure, a plurality of foot width forming members may be arranged along the length direction, and the interval between adjacent foot width forming members is smaller in the midfoot portion of the shoe last than in the forefoot portion of the shoe last.

[0155] In the shoe last according to one aspect of the present disclosure, the foot width forming member may have a plate-like shape, a plurality of foot width forming members may be arranged along the length direction, and the thickness of the foot width forming member is smaller in the midfoot portion of the shoe last than in the forefoot portion of the shoe last.

[0156] In the shoe last according to one aspect of the present disclosure, in the heel portion of the shoe last, a plurality of foot width forming members may be arranged along the height direction.

[0157] In the shoe last according to one aspect of the present disclosure, the foot length forming member may have a rod-like shape extending along the length direction, and a through hole through which the foot length forming member passes is formed in the foot width forming member.

[0158] In the shoe last according to one aspect of the present disclosure, a plurality of foot width forming members may be arranged along the length direction, and the shoe last further includes a spacer disposed between adjacent foot width forming members to determine the interval between adjacent foot width forming members.

[0159] In the shoe last according to one aspect of the present disclosure, the foot length forming member may have a plate-like shape.

[0160] In the shoe last according to one aspect of the present disclosure, the foot length forming member may have a hollow or solid three-dimensional shape.

[0161] In the shoe last according to one aspect of the present disclosure, an engaging groove may be formed in the foot length forming member, and the foot width forming member is assembled in the engaging groove.

[0162] In the shoe last according to one aspect of the present disclosure, a second engaging groove may be formed in the foot width forming member, and the foot length forming member is assembled in the second engaging groove. The engaging groove and the second engaging groove have tapered portions where the groove width decreases as it approaches the groove bottom.

[0163] In the shoe last according to one aspect of the present disclosure, the foot length forming member and the foot width forming member may be made of paper.

[0164] In the shoe last according to one aspect of the present disclosure, the foot length forming member and the foot width forming member may form part of a packaging material for packaging shoes.

[0165] In the shoe last according to one aspect of the present disclosure, the shoe last may further include a common portion with an unchanged shape and position.

[0166] In the shoe last according to one aspect of the present disclosure, the common portion may form the bottom surface of the shoe last and has a shape corresponding to the shape of the upper surface of the sole that engages with the shoe upper.

[0167] In the shoe last according to one aspect of the present disclosure, the shoe last may further include a position changing portion with an unchanged shape and a variable position.

[0168] In the shoe last according to one aspect of the present disclosure, it may further include a sheet-like or plate-like covering body that covers at least a part of the shoe last from the outside.

[0169] A method for manufacturing a shoe last according to one aspect of the present disclosure is a method for forming a shoe last that constitutes the shoe upper of a shoe. The method for manufacturing the shoe last includes the following steps. The first step is a step of preparing a foot length forming member and a plurality of foot width forming members. The foot length forming member defines the shape of the shoe last in at least the length direction of the shoe, and the plurality of foot width forming members define the shape of the shoe last in at least the width direction of the shoe. The second step is a step of assembling the foot width forming member to the foot length forming member.

[0170] In the method for manufacturing a shoe last according to one aspect of the present disclosure, the step of preparing the foot length forming member and the foot width forming members may include: a step of generating a foot shape model of a user; a step of generating a foot width forming model for forming the foot width forming member from the foot shape model; and a step of machining a base member based on the foot width forming model to form the foot width forming member.

[0171] A method for manufacturing a shoe upper according to an aspect of the present disclosure includes the following steps. The first step is to cover a pre-formed shoe upper including a fiber sheet containing heat-shrinkable yarn on a shoe last on any one of the above aspects. The second step is to form the pre-formed shoe upper into a post-formed shoe upper along the shape of the shoe last by heating.

[0172] The embodiments of the present invention have been described, but it should be considered that the embodiments disclosed this time are illustrative in all aspects and not restrictive embodiments. The scope of the present invention is represented by the claims, and is intended to include all changes within the meaning and scope equivalent to the claims.

Claims

1. A shoe last for forming a shoe upper that constitutes a shoe, comprising: A foot length forming member that defines the shape of the shoe last in at least the length direction of the shoe; A plurality of foot width forming members that define the shape of the shoe last in at least the width direction of the shoe and are assembled to the foot length forming member; and At the heel part of the shoe last, a plurality of engaging grooves arranged at equal intervals along the height direction are formed in the foot length forming member, and the plurality of foot width forming members are assembled to the engaging grooves and arranged at equal intervals along the height direction.

2. The shoe last according to claim 1, wherein At least one of the foot length forming member and the foot width forming member includes a position recognition part that shows the arrangement of the foot length forming member and the foot width forming member in the shoe last.

3. The shoe last according to claim 1 or 2, wherein The plurality of foot width forming members are arranged along the length direction, The interval between adjacent foot width forming members is smaller in the midfoot part of the shoe last than in the forefoot part of the shoe last.

4. The shoe last according to claim 1 or 2, wherein The foot width forming member has a plate-like shape, and the plurality of foot width forming members are arranged along the length direction, The thickness of the foot width forming member is smaller in the midfoot part of the shoe last than in the forefoot part of the shoe last.

5. The shoe last according to claim 1 or 2, wherein The foot length forming member has a rod-like shape extending along the length direction, A through hole for the foot length forming member to pass through is formed in the foot width forming member.

6. The shoe last according to claim 5, wherein The plurality of foot width forming members are arranged along the length direction, The shoe last further comprises: Spacers arranged between adjacent foot width forming members to determine the interval between adjacent foot width forming members.

7. The shoe last according to claim 1 or 2, wherein The foot length forming member has a plate-like shape.

8. The shoe last according to claim 1 or 2, wherein The foot length forming member has a hollow or solid three-dimensional shape.

9. The shoe last according to claim 7, wherein An engaging groove is formed in the foot length forming member, The foot width forming member is assembled to the engaging groove.

10. The shoe last according to claim 9, wherein A second engaging groove is formed in the foot width forming member, and the foot length forming member is assembled to the second engaging groove, The engaging groove and the second engaging groove include tapered portions, and the groove width decreases as it approaches the bottom of the groove.

11. The shoe last according to claim 1 or 2, wherein The foot length forming member and the foot width forming member are made of paper.

12. The shoe last according to claim 11, wherein The foot length forming member and the foot width forming member constitute a part of the packaging material for packaging the shoe.

13. The shoe last according to claim 1 or 2, wherein The shoe last further includes a common part with an unchanged shape and position.

14. The shoe last according to claim 13, wherein The common part constitutes the bottom surface of the shoe last and has a shape corresponding to the shape of the upper surface of the sole to which the shoe upper is joined.

15. The shoe last according to claim 1 or 2, wherein the shoe last further includes a position-changing portion with an unchanged shape and a changeable position.

16. The shoe last according to claim 1 or 2, further including: a sheet-like or plate-like covering body that covers at least a part of the shoe last from the outside.

17. A method for manufacturing a shoe last, which is a method for manufacturing a shoe last for forming an upper of a shoe, including: a step of preparing a foot-length forming member and a plurality of foot-width forming members, the foot-length forming member defining the shape of the shoe last in at least the length direction of the shoe, and the plurality of foot-width forming members defining the shape of the shoe last in at least the width direction of the shoe; a step of assembling the foot-width forming members to the foot-length forming member; and at the heel portion of the shoe last, a plurality of engaging grooves are formed in the foot-length forming member at equal intervals along the height direction, and the plurality of foot-width forming members are assembled to the engaging grooves and arranged at equal intervals along the height direction.

18. The method for manufacturing a shoe last according to claim 17, wherein the step of preparation includes: a step of generating a foot model of a user; a step of generating a foot-width forming model for forming the foot-width forming member from the foot model; and a step of processing a base member based on the foot-width forming model to form the foot-width forming member.

19. A method for manufacturing an upper, including: a step of covering a pre-formed upper including a fiber sheet containing heat-shrinkable yarn on the shoe last according to any one of claims 1 to 16; and a step of heating the pre-formed upper to make it conform to the shape of the shoe last to form a post-formed upper.

Images