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

Abstract

To provide a shoe last tailored for a user which can be readily manufactured without using large-scale equipment.SOLUTION: A shoe last 1 for molding a shoe upper constituting a shoe includes: a foot length formation member 20 for regulating a shape of the shoe last 1 in at least a longitudinal direction of the shoe; and multiple foot breadth formation members 40 for regulating a shape of the shoe last 1 in at least a width direction and assembled to the foot length formation member 20.SELECTED DRAWING: Figure 15

Description

Technical Field

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

Background Art

[0002] When manufacturing shoes, a last (shoe mold) for covering the fabric constituting the shoe upper is used to form the shoe upper into a predetermined shape.

[0003] Patent Document 1 discloses manufacturing footwear within a portable housing. Patent Document 2 discloses a last preform that can be reshaped by a shape memory polymer. Patent Document 3 discloses forming a last by 3D printing.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0005] When manufacturing made-to-order shoes customized to a user's foot, a dedicated last reflecting the shape of each individual's foot is manufactured. To manufacture a user-specific last by conventional methods, dedicated large-scale machines are used, which requires time and cost.

[0006] This disclosure proposes a user-specific last that can be easily manufactured without the use of large-scale equipment, a method for manufacturing the last, and a method for manufacturing a shoe upper using the last. [Means for solving the problem]

[0007] In accordance with certain aspects of this disclosure, a last is proposed for shaping a shoe upper that constitutes a shoe. The last comprises a length-forming member that defines the shape of the last in at least the longitudinal direction of the shoe, and a plurality of width-forming members that define the shape of the last in at least the width direction of the shoe and are assembled to the length-forming member.

[0008] In accordance with certain aspects of this disclosure, a method for manufacturing a last for forming a shoe upper is proposed. This method for manufacturing a last comprises the following steps: A first step is to prepare a length-forming member that defines the shape of the last in at least the longitudinal direction of the shoe, and a plurality of width-forming members that define the shape of the last in at least the width direction of the shoe. A second step is to assemble the width-forming members to the length-forming member.

[0009] In accordance with certain aspects of this disclosure, a method for manufacturing a shoe upper is proposed. This method for manufacturing a shoe upper comprises the following steps: The first step is to place a pre-molded upper, made of a fiber sheet containing heat-shrinkable yarn, over the last. The second step is to heat the pre-molded upper to conform to the shape of the last to form a post-molded upper. [Effects of the Invention]

[0010] According to this disclosure, it is possible to realize a user-specific last that can be easily manufactured without using large-scale equipment. [Brief explanation of the drawing]

[0011] [Figure 1] This diagram shows the process of photographing a user's feet to obtain a foot model. [Figure 2] It is a perspective view of a foot type model. [Figure 3] It is a perspective view of a last model. [Figure 4] It is a perspective view of a last cross-sectional model. [Figure 5] It is a plan view of a last cross-sectional model. [Figure 6] It is a perspective view showing only the foot length forming model among the last cross-sectional models. [Figure 7] It is a perspective view showing only the foot width forming model among the last cross-sectional models. [Figure 8] It is a schematic diagram showing a pattern in which a last cross-sectional model is arranged on a base member. [Figure 9] It is a schematic diagram showing an example in which a base member constitutes a part of a packing material. [Figure 10] It is a side view of a foot length forming member. [Figure 11] It is a view showing an enlarged view of region XI shown in FIG. 9. [Figure 12] It is an enlarged view of the vicinity of the groove bottom of an engagement groove formed in a foot length forming member. [Figure 13] It is a front view of a foot width forming member. [Figure 14] It is an enlarged view of the vicinity of the groove bottom of an engagement groove formed in a foot width forming member. [Figure 15] It is a perspective view of a last. [Figure 16] It is a schematic diagram showing a first example of a position identification part. [Figure 17] It is a schematic diagram showing a second example of a position identification part. [Figure 18] It is a schematic diagram showing a third example of a position identification part. [Figure 19] It is a perspective view showing only the foot width forming member among the lasts of the second embodiment. [Figure 20] It is a side view showing only the foot width forming member among the lasts of the third embodiment. [Figure 21] It is an exploded perspective view of a last of the fourth embodiment. [Figure 22]This is the final perspective view of the fourth embodiment. [Figure 23] This is the final side view of the fourth embodiment. [Figure 24] This is an exploded perspective view of the leg-lengthening member of the fifth embodiment. [Figure 25] This is a side view of the leg-lengthening member of the fifth embodiment. [Figure 26] This figure shows a magnified view of region XXVI shown in Figure 25. [Figure 27] This is the final side view of the fifth embodiment. [Figure 28] This is the final exploded perspective view of the sixth embodiment. [Figure 29] This is the final perspective of the sixth embodiment. [Figure 30] This is the final perspective view of the seventh embodiment. [Figure 31] This is a perspective view of the position change section. [Figure 32] This is the final perspective view with the repositioned section changed. [Figure 33] This is the final plan view with the repositioned section changed. [Figure 34] This is the final perspective view of the eighth embodiment. [Figure 35] This is a side view of the last, covered by the protective cover. [Figure 36] This is the final perspective view of the ninth embodiment. [Figure 37] This is a partial cross-sectional view of the last section along the line XXXVII-XXXVII shown in Figure 36. [Figure 38] This is a partial cross-sectional view of a last with a spherical cap. [Figure 39] This is the final perspective view of the tenth embodiment. [Figure 40] This is the final side view of the tenth embodiment. [Figure 41] This is a perspective view showing the unmolded upper placed over the shoe last. [Figure 42] This is a schematic diagram showing the process of heating the unmolded upper that is placed over the last. [Modes for carrying out the invention]

[0012] The embodiments will be described below with reference to the drawings. In the following description, identical parts are denoted by the same reference numerals. Their names and functions are also the same. Therefore, detailed descriptions of them will not be repeated.

[0013] The lasts (shoe molds) of the embodiments described below are primarily for custom-made shoes tailored to the user's foot. However, the lasts of the embodiments can also be applied to lasts for mass-produced shoes.

[0014] [First Embodiment] Figure 1 shows the process of photographing a user's foot F to obtain a foot shape model FM. As shown in Figure 1, the user's foot F is photographed using a portable device capable of taking pictures, such as a smartphone P or a digital camera, and image data of the foot F is obtained. The image data of the foot F can be taken at a store visited by the user. The store may be a fixed store or a mobile store using a car or trailer. Alternatively, the image data of the foot F can be taken at the user's home. The user may also send the image data of their own foot F to the shoe manufacturer's server.

[0015] Figure 2 is a perspective view of the foot model FM. The foot model FM shown in Figure 2 is a three-dimensional foot model generated from measurement data of each part of the user's foot F obtained from image data of the foot F. For example, when a user's foot F is photographed using a smartphone P, the foot model FM can be generated based on the image data using software pre-installed on the smartphone P. Alternatively, the foot model FM can be generated by performing calculations using both the captured image data and data on a server used by the shoe manufacturer.

[0016] The foot model FM may be formed to be identical in shape to the user's foot F. Alternatively, for design or functional reasons, specific parts of the foot model FM may be modified to the desired dimensions relative to the shape of the user's foot F.

[0017] Figure 3 is a perspective view of last model 100. Last model 100, shown in Figure 3, is a customized last model that conforms to the shape of the user's foot F, based on the foot shape model FM shown in Figure 2. By molding the shoe upper using a last created according to this last model 100, a custom-made shoe can be produced specifically for the user.

[0018] Figure 4 is a perspective view of the last section model 110. Figure 5 is a plan view of the last section model 110. As shown in Figures 4 and 5, the last 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 a cross section along the length direction of the last model 100 shown in Figure 3. The foot width forming model 140 corresponds to a cross section along the width direction of the last model 100 shown in Figure 3.

[0019] In this specification, the length direction refers to the direction along the straight line connecting the foremost end of the toe side and the rearmost end of the heel side of the shoe or last in a plan view. The width direction refers to the direction perpendicular to the length direction in a plan view. The height direction refers to the direction perpendicular to the plane defined by the length direction and the width direction.

[0020] The last section model 110 is formed as a combination of multiple leg length forming models 120 extending in the length direction and multiple leg width forming models 140 extending in the width direction. Figure 6 is a perspective view showing only the leg length forming models 120 of the last section model 110. Figure 7 is a perspective view showing only the leg width forming models 140 of the last section model 110. In the embodiments shown in Figures 4 to 7, the multiple leg length forming models 120 are arranged parallel to each other with equal spacing between them. The multiple leg width forming models 140 are arranged parallel to each other with equal spacing between them.

[0021] Figure 8 is a schematic diagram showing a pattern in which the rust cross-section model 110 is placed on the base member 10. The base member 10 has a flat plate shape and is made of, for example, paper. The base member 10 may also be corrugated cardboard, which is highly recyclable. Alternatively, the base member 10 may be a flat plate made of, for example, resin. The base member 10 may be made of thermoplastic resin, or it may be made of composite material such as cork or felt.

[0022] As shown in Figure 8, the last section model 110, specifically a plurality of leg length forming models 120 and a plurality of leg width forming models 140, is arranged on the base member 10. By arranging the plurality of leg length forming models 120 and the plurality of leg width forming models 140 closely on the base member 10 and reducing the gaps between the leg length forming models 120 and the leg width forming models 140, the amount of waste from the base member 10 when cutting out the parts that make up the last can be reduced. Nesting technology may be used to adjust the arrangement of the leg length forming models 120 and leg width forming models 140 on the base member 10. Nesting may be performed automatically using dedicated software.

[0023] The parts that make up the last, specifically the leg length forming member 20 and the leg width forming member 40 described below, are formed by processing the base member 10 along the leg length forming model 120 and the leg width forming model 140 that are placed on the base member 10. For example, the leg length forming member 20 and the leg width forming member 40 may be formed by cutting out the base member 10 with a laser cutter or the like. The leg length forming member 20 and the leg width forming member 40 formed from a single base member 10 have a plate-like shape and the same thickness.

[0024] Figure 9 is a schematic diagram showing an example in which the base member 10 constitutes part of the packaging material. If the base member 10 is made of corrugated cardboard, the base member 10 may constitute the packaging material for packaging shoes, specifically the shoe box 12. In this case, the foot length forming member 20 and the foot width forming member 40 cut from the base member 10 will constitute part of the shoe box 12 (for example, the inner box).

[0025] Figure 10 is a side view of the leg length forming member 20. Figure 11 is an enlarged view of region XI shown in Figure 9. Figure 12 is an enlarged view of the area near the bottom 32 of the engagement groove 30 formed in the leg length forming member 20. In Figures 10 to 12, a specific leg length forming member 20 is used as an example to explain the process from among multiple leg length forming members 20 that are cut out from the base member 10 according to multiple leg length forming models 120.

[0026] Since the base member 10 has a flat plate shape and the leg-lengthening member 20 is formed by cutting it out from the base member 10, the leg-lengthening member 20 also has a plate shape. The leg-lengthening member 20 extends in the length direction of the last. The leg-lengthening member 20 defines the shape of the last at least in the length direction. The leg-lengthening member 20 defines the shape of the last in both the length and height directions.

[0027] Multiple engagement grooves 30 are formed in the leg-lengthening member 20. The engagement grooves 30 are arranged at equal intervals in the longitudinal direction. Each engagement groove 30 has a slit-like shape that extends in the height direction. The engagement grooves 30 extend downward from the upper edge of the leg-lengthening member 20. The engagement grooves 30 have an opening 31 that opens at the upper edge of the leg-lengthening member 20 and a groove bottom 32 at an intermediate position that does not reach the lower edge of the leg-lengthening member 20. As shown in Figure 11, the length of the engagement groove 30 may be half the length from the upper edge to the lower edge of the leg-lengthening member 20 at the position where the engagement groove 30 is formed. As shown in Figure 12, the engagement groove 30 may have a tapered portion 33 that reduces the groove width as it approaches the groove bottom 32.

[0028] Figure 13 is a front view of the foot width forming member 40. Figure 14 is an enlarged view of the area near the bottom 52 of the engagement groove 50 formed in the foot width forming member 40. In Figures 13 and 14, a specific foot width forming member 40 is used as an example to explain the process from among multiple foot width forming members 40 that are cut out from the base member 10 according to multiple foot width forming models 140.

[0029] Since the base member 10 has a flat plate shape and the foot width forming member 40 is formed by cutting it out from the base member 10, the foot width forming member 40 also has a plate shape. The foot width forming member 40 extends in the width direction of the last. The foot width forming member 40 defines the shape of the last at least in the width direction. The foot width forming member 40 defines the shape of the last in both the width and height directions. The foot width forming member 40 shown in Figure 13 has a roughly fan-shaped form.

[0030] Multiple engagement grooves 50 are formed in the foot width forming member 40. The engagement grooves 50 are arranged at equal intervals in the width direction. Each engagement groove 50 has a slit-like shape that extends in the height direction. The engagement grooves 50 extend upward from the lower edge of the foot width forming member 40. The engagement grooves 50 have an opening 51 that opens at the lower edge of the foot width forming member 40 and have a groove bottom 52 at an intermediate position that does not reach the upper edge of the foot width forming member 40. The length of the engagement groove 50 may be half the length from the upper edge to the lower edge of the foot width forming member 40 at the position where the engagement groove 50 is formed. As shown in Figure 14, the engagement grooves 50 may have a tapered portion 53 that reduces the groove width as it approaches the groove bottom 52.

[0031] Figure 15 is a perspective view of last 1. Last 1 is formed by assembling a leg width forming member 40 into an engagement groove 30 formed in a leg length forming member 20, and a leg length forming member 20 into an engagement groove 50 formed in a leg width forming member 40, with multiple leg length forming members 20 and multiple leg width forming members 40 being assembled alternately. Multiple leg length forming members 20 are arranged side by side in the width direction of last 1. Multiple leg width forming members 40 are arranged side by side in the length direction of last 1.

[0032] Since engagement grooves 30 are formed at equal intervals in the length direction of the leg length forming member 20, the multiple leg width forming members 40 are arranged at equal intervals in the length direction. Since engagement grooves 50 are formed at equal intervals in the width direction of the leg width forming member 40, the multiple leg length forming members 20 are arranged at equal intervals in the width direction.

[0033] Figure 16 is a schematic diagram showing a first example of the position identification section 60. Each of the foot length forming member 20 and the foot width forming member 40 may have a position identification section 60 that indicates the arrangement of the foot length forming member 20 and the foot width forming member 40 on the last 1. In the example shown in Figure 16 and Figures 17 and 18 described later, the position identification section 60 provided on the foot width forming member 40 is shown. In Figures 16 to 18, for simplification, the engagement groove 50 formed on the foot width forming member 40 is omitted from the illustration.

[0034] The position identification unit 60 has the character information "L" indicating that the foot width forming member 40 is a part of last 1 for the left foot, the character information "H" indicating that it is the foot width forming member 40, and the character information "6" indicating that the foot width forming member 40 is the sixth part from the toe. The position identification unit 60 also has a mark. By aligning the orientation of the mark, the foot width forming member 40 is oriented correctly, the position identification unit 60 becomes easier to see, and each character information can be correctly recognized.

[0035] The position identification section 60 shown in Figure 16 can be formed by laser printing. In this case, the position identification section 60 can be engraved on each of the leg length forming member 20 and leg width forming member 40 at the same time as cutting out the leg length forming member 20 and leg width forming member 40 from the base member 10. The position identification section 60 may also be printed on the leg length forming member 20 and leg width forming member 40 using ink. The position identification section 60 may also be provided by attaching a seal to the leg length forming member 20 and leg width forming member 40.

[0036] Figure 17 is a schematic diagram showing a second example of the location identification unit 60. The location identification unit 60 may be implemented by coded information, as shown in Figure 17. The location identification unit 60 shown in Figure 17 is a matrix-type two-dimensional code in which information is displayed in a vertical and horizontal mosaic pattern using white and black cells, but it may be other types of two-dimensional codes or one-dimensional codes such as barcodes.

[0037] Figure 18 is a schematic diagram showing a third example of the position identification unit 60. The position identification unit 60 may be implemented by an IC (Integrated Circuit) chip, as shown in Figure 18. The position identification unit 60, implemented by the coded information shown in Figure 17 or the IC chip shown in Figure 18, is provided in advance on the base member 10, and each leg length forming member 20 and leg width forming member 40 may be cut out from the base member 10 so as to include the position identification unit 60. Alternatively, the position identification unit 60 may be attached to the leg length forming member 20 and leg width forming member 40 after they have been cut out.

[0038] The position identification unit 60 is not limited to the example described above. For example, by coloring the engagement groove 30 of the leg length forming member 20 and the leg width forming member 40 assembled to the engagement groove 30, and combining members of the same color, it is possible to assemble the appropriate leg width forming member 40 to the appropriate engagement groove 30.

[0039] The assembly of the leg length forming member 20 and the leg width forming member 40 may be performed by a person, or it may be performed automatically by a robot. The robot can read the position information of the leg length forming member 20 and the leg width forming member 40 recorded in the position identification unit 60, and recognize the position of the position identification unit 60 on the leg length forming member 20 and the leg width forming member 40, thereby reliably assembling each leg length forming member 20 and leg width forming member 40 in the appropriate position and orientation.

[0040] Although some of the descriptions above overlap with the explanation given, the characteristic configuration and effects of this embodiment are listed below.

[0041] As shown in Figure 15, the last 1 of the embodiment comprises a leg length forming member 20 and a leg width forming member 40. The leg length forming member 20 defines the shape of the last 1 at least in the longitudinal direction. The leg width forming member 40 defines the shape of the last 1 at least in the width direction and is assembled to the leg length forming member 20.

[0042] Based on the target user's foot shape model FM, a foot length forming member 20 and a foot width forming member 40 are prepared by cutting them from a sheet-like base member 10. The last 1 is formed by assembling the foot width forming member 40 to the foot length forming member 20. Large-scale equipment is not required 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, a last 1 specifically for the target user can be manufactured simply.

[0043] As shown in Figures 16-18, at least one of the leg length forming member 20 and the leg width forming member 40 may have a position identification section 60 that indicates the arrangement of the leg length forming member 20 and the leg width forming member 40 in the last 1. By referring to the position identification section 60, the assembly positions of each leg length forming member 20 and leg width forming member 40 can be easily identified, thereby improving the assembly speed of the last 1. Therefore, the work efficiency during the manufacturing of the last 1 can be improved.

[0044] As shown in Figures 10 and 15, the leg length forming member 20 may have a plate-like shape. As shown in Figures 13 and 15, the leg width forming member 40 may also have a plate-like shape. All of the parts constituting the last 1, namely both the leg length forming member 20 and the leg width forming member 40, can be formed by cutting them out from a sheet-like base member 10. Therefore, the storage space required for the parts constituting the last 1 can be reduced. When shipping the base member 10, or the leg length forming member 20 and leg width forming member 40 after cutting, the plate-like shape allows for smaller packaging, thus reducing shipping costs.

[0045] As shown in Figures 10-12, the leg length forming member 20 has an engagement groove 30, and as shown in Figure 15, the leg width forming member 40 may be assembled into the engagement groove 30 of the leg length forming member 20. By inserting the leg width forming member 40 into the engagement groove 30 and assembling the leg length forming member 20 and the leg width forming member 40, a three-dimensional last 1 can be easily created. In addition, when moving the assembled last 1, the leg length forming member 20 and the leg width forming member 40 can be prevented from coming apart. By appropriately adjusting the groove depth of the engagement groove 30, the height-direction shape of the last 1 assembled by inserting the leg width forming member 40 into the engagement groove 30 of the leg length forming member 20 can be determined.

[0046] As shown in Figure 12, the engagement groove 30 of the leg length forming member 20 may have a tapered portion 33 that reduces the groove width as it approaches the groove bottom 32. As shown in Figure 14, the engagement groove 50 of the leg width forming member 40 may have a tapered portion 53 that reduces the groove width as it approaches the groove bottom 52. By inserting the leg width forming member 40 into the engagement groove 30 and the leg length forming member 20 into the engagement groove 50 to form the last 1, it is possible to prevent the leg length forming member 20 and the leg width forming member 40 from coming apart when moving the last 1 after assembly. By forming tapered portions 33 and 53 in the engagement grooves 30 and 50 to widen the groove width, it is possible to assemble the leg length forming member 20 and the leg width forming member 40. By narrowing the groove width at the groove bottoms 32 and 52, the leg length forming member 20 and the leg width forming member 40 can be properly positioned and correctly assembled.

[0047] Instead of the tapered portions 33 and 53 described above, other engaging means such as protrusions may be provided in the engaging grooves 30 and 50. The protrusions in the engaging groove 30 and the protrusions in the engaging groove 50 engage with each other, which prevents the leg length forming member 20 and the leg width forming member 40 from coming apart and allows the leg length forming member 20 and the leg width forming member 40 to be assembled correctly.

[0048] As shown in Figures 8 and 9, the foot length forming member 20 and the foot width forming member 40 may be made of paper. By making the parts that make up the last 1 out of paper, the last 1 can be made lighter. By collecting and recycling the last 1 after it has been used in shoe manufacturing, the environmental burden can be reduced. If the foot length forming member 20 and the foot width forming member 40 are made of corrugated cardboard, they can be returned to a fibrous state with just water, and the recycling process also has a small environmental burden. The foot length forming member 20 and the foot width forming member 40 may also be made of thermoplastic resin, in which case the last 1 can be recycled by heating and melting it after use, thus reducing the environmental burden.

[0049] As shown in Figure 9, the foot length forming member 20 and the foot width forming member 40 may constitute part of the packaging material (shoe box 12) for packaging the shoes. By using a portion of a material that has been conventionally used as packaging material, such as corrugated cardboard, to create the last 1, it becomes unnecessary to add new materials for the creation of the last 1, and material waste is eliminated. Therefore, cost reduction and a reduction in environmental impact can be achieved.

[0050] By incorporating them into the packaging, the user can take the foot length forming member 20 and the foot width forming member 40 home with them. The user can assemble the last 1 at home and use it when ordering the same shoes again, use the assembled last 1 as a shoe tree, or keep it as a record of their child's growth.

[0051] As shown in Figures 1-3, a foot shape model FM is generated from image data of the user's foot F, and a last model 100 is generated based on the foot shape model FM. As shown in Figures 4-7, a foot width forming model 140 for forming the foot width forming member 40 is generated by obtaining the cross-sectional shape in the width direction of the last model 100. As shown in Figures 8 and 13, 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 be formed using the same method. In this way, a last 1 that matches the shape of the user's foot F can be reliably formed.

[0052] In the above description of the embodiment, an example was given in which the leg length forming member 20 and the leg width forming member 40 are created by cutting out the base member 10. The leg length forming member 20 and the leg width forming member 40 are not limited to being cut out from the plate-shaped base member 10, but may be formed by other methods, such as molding using a 3D printer.

[0053] The last 1 shown in Figure 15 is formed by assembling a flat, plate-shaped foot length forming member 20 extending in the longitudinal direction and a flat, plate-shaped foot width forming member 40 extending in the width direction, so as to be perpendicular to each other. The foot length forming member 20 does not necessarily have to be a flat plate extending in the longitudinal direction, and the foot width forming member 40 does not necessarily have to be a flat plate extending in the width direction. For example, the foot length forming member 20 may have a curved shape so that the spacing gradually increases towards the toe side of the foot, and the foot width forming member 40 may have a curved shape so as to be perpendicular to each of the curved foot length forming members 20. The direction of the cross-sections of the foot length forming model 120 and the foot width forming model 140 may be determined based on the curvature of the foot.

[0054] [Second Embodiment] Figure 19 is a perspective view showing only the foot width forming member 40 of the last 1 of the second embodiment. As shown in Figure 19, the last 1 is defined as having a forefoot and a midfoot. For example, the forefoot may be defined as the area corresponding to the wearer's toes to the MTP joint in the length direction of the shoe, and the midfoot may be defined as the area corresponding to the wearer's MTP joint to the cuneiform bone. Alternatively, for example, if the foremost end on the toe side of the last 1 is the 0% position and the highest end on the heel side is the 100% position, the forefoot may be defined as the range from the 0% position to the 30-35% position in the length direction of the last 1, and the midfoot may be defined as the range from the 50-55% position behind the forefoot.

[0055] In the last 1 of the second embodiment, the spacing between adjacent foot width forming members 40 is smaller in the midfoot portion of the last 1 than in the forefoot portion. The forefoot portion shows less variation in foot shape from user to user, while the midfoot portion shows relatively greater variation in foot shape from user to user. By reducing the spacing between adjacent foot width forming members 40 in the midfoot portion, where differences in foot shape from user to user are more pronounced, the precision of the shape of the midfoot portion of the last 1 can be improved.

[0056] In this way, by varying the density of the foot width forming members 40 in the longitudinal direction, it is possible to create a last 1 that accurately reflects the user's foot shape. Since the spacing of the foot width forming members 40 in the forefoot and rearfoot areas, where differences in individual user foot shapes are less pronounced, is not made excessively small, and the number of parts is kept down, the manufacturing speed of the last 1 can be improved.

[0057] [Third Embodiment] Figure 20 is a side view showing only the foot width forming member 40 of the last 1 of the third embodiment. The last 1 shown in Figure 20 has a forefoot and a midfoot, similar to Figure 19. In the last 1 of the third embodiment, the spacing between adjacent foot width forming members 40 is smaller in the midfoot of the last 1 than in the forefoot of the last 1. In addition, the thickness of the foot width forming member 40 is smaller in the midfoot of the last 1 than in the forefoot of the last 1.

[0058] The reduced thickness of the midfoot width forming member 40 makes it easier to reduce the spacing between adjacent midfoot width forming members 40. This improves the precision of the midfoot shape of the last 1, allowing for the creation of a last 1 that more accurately reflects the user's foot shape.

[0059] As shown in Figure 20, the spacing between adjacent foot width forming members 40 may also be reduced in the heel portion of last 1. Since there are significant differences in foot shape among users in the heel portion as well, reducing the spacing between adjacent foot width forming members 40 in the heel portion can further improve the accuracy of the shape of last 1.

[0060] [Fourth Embodiment] Figure 21 is an exploded perspective view of the last 1 of the fourth embodiment. Figure 22 is a perspective view of the last 1 of the fourth embodiment. Figure 23 is a side view of the last 1 of the fourth embodiment. In the first embodiment, an example was described in which the foot length forming member 20 has a plate-like shape, but the shape of the foot length forming member 20 is not limited to a plate shape. As shown in Figures 21 to 23, the foot length forming member 20 may have a rod-like shape that extends in the longitudinal direction of the shoe or the last 1. The foot width forming member 40 may have a through hole 42 through which the rod-shaped foot length forming member 20 passes.

[0061] The leg length forming member 20 is made into a rod shape, and a through hole 42 is formed in the plate-shaped leg width forming member 40. By passing the rod-shaped leg length forming member 20 through the through hole 42, the leg width forming member 40 can be assembled to the leg length forming member 20. This makes the assembly of the leg length forming member 20 and the leg width forming member 40 even simpler and faster than in the first embodiment.

[0062] When dismantling the last unit, it can be easily dismantled by pulling out the leg length forming member 20 through the through hole 42 of the leg width forming member 40. This makes it easy to recycle the leg width forming member 40. The leg length forming member 20 may be made of paper or resin and recycled in the same way as the leg width forming member 40, or the leg length forming member 20 may be reused as is.

[0063] [Fifth Embodiment] Figure 24 is an exploded perspective view of the foot length forming member 20 of the fifth embodiment. Figure 25 is a side view of the foot length forming member 20 of the fifth embodiment. Figure 26 is an enlarged view of region XXVI shown in Figure 25. Figure 27 is a side view of the last 1 of the fifth embodiment. The last 1 of the fifth embodiment comprises a rod-shaped foot length forming member 20 and a plate-shaped foot width forming member 40, similar to the fourth embodiment. The multiple foot width forming members 40 are arranged in the longitudinal direction of the shoe or last 1. The last 1 further comprises spacers 24 positioned between adjacent foot width forming members 40. The spacers 24 have an annular shape. The spacers 24 define the spacing between adjacent foot width forming members 40.

[0064] When passing the rod-shaped leg length forming member 20 through the through hole 42 of the leg width forming member 40, it is necessary to control the gap dimension between adjacent leg width forming members 40. By placing spacers 24 between adjacent leg width forming members 40 separately from the leg length forming members 20, the assembly position of the leg width forming members 40 relative to the leg length forming members 20 can be controlled. Therefore, the leg width forming members 40 can be arranged at a specified interval. For example, by making all the spacers 24 the same shape, the leg width forming members 40 can be arranged at equal intervals, and by shortening the spacers 24 in the midfoot area, the spacing between the leg width forming members 40 can be narrowed.

[0065] The last 1 shown in Figure 27 can be formed by fitting the leg width forming member 40 into the groove-shaped space between adjacent spacers 24 on an assembly in which the leg length forming member 20 shown in Figures 25 and 26 has been assembled first. Alternatively, the last 1 shown in Figure 27 may be formed by alternately attaching the leg width forming member 40 and the spacers 24 to the leg length forming member 20.

[0066] When forming a through hole 42 in the plate-shaped leg width forming member 40, a burring process is performed to form a cylindrical wall around the through hole 42, thereby creating a structure in which the leg width forming member 40 and the spacer 24 are integrated. In this case, the last 1 shown in Figure 27 can be formed by sequentially attaching the leg width forming member 40 to the leg length forming member 20, eliminating the need to assemble the spacer 24 separately from the leg width forming member 40. Therefore, the process of forming the last 1 can be simplified, and the manufacturing speed can be increased.

[0067] [Sixth Embodiment] Figure 28 is an exploded perspective view of the last 1 of the sixth embodiment. Figure 29 is a perspective view of the last 1 of the sixth embodiment. The leg length forming member 20 may have a three-dimensional shape in addition to the plate-like and rod-like shapes described so far. The leg length forming member 20 shown in Figure 28 has a base portion 26 and a core portion 28. The core portion 28 may be hollow or solid. An engagement groove 30 is formed on the surface of the core portion 28. As shown in Figure 29, the last 1 is formed by assembling the leg width forming member 40 into the engagement groove 30. The leg width forming member 40 shown in Figures 28 and 29 has a shape in which a part of the annular portion is cut out.

[0068] The base portion 26 has a shape that corresponds to the shape of the upper surface of the shoe sole to which the shoe upper is joined. The core portion 28 has a three-dimensional shape that is a scaled-down version of the last model 100 (Figure 3). The base portion 26 and the core portion 28 are prepared in advance as common components, rather than changing their shape for each user. Instead of cutting out all the cross-sections of the last model 100 to make the foot width forming model 140 as in the first embodiment, the shape of the last 1 is predetermined to some extent using the base portion 26 and the core portion 28. A plate-shaped foot width forming member 40 is inserted into the engagement groove 30 provided in the core portion 28 to form the last 1 with the final shape corresponding to the user's foot shape model FM.

[0069] In this way, the last 1 is formed by fitting the foot width forming member 40 into the three-dimensional core portion 28. This makes it 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, which is molded to the shape of the user's foot, 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 last can be efficiently manufactured with less material. The engagement groove 30 formed in the core portion 28 extends along the surface of the three-dimensional core portion 28 and has the same curvature as the surface of the core portion 28, thereby improving the reproducibility of the user's foot shape by the last 1.

[0070] [Seventh Embodiment] Figure 30 is a perspective view of the last 1 of the seventh embodiment. In the embodiments described so far, the foot width forming member 40 was assembled to the foot length forming member 20 along the entire length of the last 1 in the longitudinal direction to form a last 1 that fits the shape of the user's foot, but the foot width forming member 40 is not necessarily required to be assembled along the entire length of the last 1.

[0071] The last 1 shown in Figure 30 has a common part 70 that is constant in shape and position in the toe area and in the midfoot area, which corresponds to the ankle and arch of the foot, and extends to the heel. The last 1 also has a position-changing part 80 that is constant in shape but can be moved, in the part corresponding to the tip of the first toe and the tip of the fifth toe. Therefore, the last 1 has a structure in which the foot length forming member 20 and the foot width forming member 40 are assembled together only in a part of the instep side of the foot that corresponds to the midfoot.

[0072] In other words, the leg length forming member 20 does not necessarily have to define the shape of the last 1 over its entire length in the longitudinal direction. The leg length forming member 20 only needs to define the shape of at least a portion of the last 1, at least in the longitudinal direction. Similarly, the leg width forming member 40 does not necessarily have to define the shape of the last 1 over its entire length in the width direction. The leg width forming member 40 only needs to define the shape of at least a portion of the last 1, at least in the width direction.

[0073] Figure 31 is a perspective view of the position-changing section 80. As shown in Figure 31, the position adjustment mechanism 82 connects a pair of left and right position-changing sections 80. The position adjustment mechanism 82 changes the position of the position-changing sections 80 relative to the common section 70. The position adjustment mechanism 82 can also fix the position-changing sections 80 in a predetermined position after the position has been changed by a fitting structure, a screw tightening structure, or the like. For example, the position adjustment mechanism 82 may have a large-diameter pipe, a small-diameter pipe housed inside the large-diameter pipe and capable of reciprocating movement relative to the large-diameter pipe, and a locking section that fixes the small-diameter pipe to the large-diameter pipe. The locking section may be a snap lock, a pin lock, a lock nut, or the like.

[0074] Figure 32 is a perspective view of last 1 with the position of the position-changing section 80 changed. Figure 33 is a plan view of last 1 with the position of the position-changing section 80 changed. As shown in Figures 32 and 33, the position-changing section 80 can change the widthwise dimension of last 1 in the midfoot area. The position adjustment mechanism 82 changes the position of the position-changing section 80 so as to increase the distance between the left and right pair of position-changing sections 80, thereby increasing the widthwise dimension of the midfoot area of ​​last 1. The position adjustment mechanism 82 changes the position of the position-changing section 80 so as to decrease the distance between the left and right pair of position-changing sections 80, thereby decreasing the widthwise dimension of the midfoot area of ​​last 1.

[0075] Thus, in the last 1, by using a common part 70 in areas where differences in foot shape among users are less pronounced and changes to the shape and position of the last 1 are unnecessary, the number of parts to be assembled is reduced, thus shortening the assembly time for the last 1. By forming parts that significantly affect the fit of the shoe due to large differences in foot shape among users using a combination of the foot length forming member 20 and the foot width forming member 40 to be user-specific, the reproducibility of the user's foot shape can be improved.

[0076] In areas where the shape is less likely to differ from user to user but the position differs, the position adjustment part 80 can be used to shorten the assembly time of the last. By only modifying the position of existing parts, the shape of the last can be adjusted to fit the user's foot shape.

[0077] Figures 30-33 illustrate an example of a last 1 in which the portion extending from the midfoot to the heel is formed as a common portion 70. Alternatively, the last 1 may also include a repositionable portion in the heel. The heel repositionable portion may be located at the rearmost part of the heel, be reciprocally movable in the longitudinal direction of the last 1, and include a repositionable portion that allows for changes in the longitudinal dimension of the last 1. The heel repositionable portion may also be located on the side of the rearfoot, corresponding to the outer and / or inner ankle, be movable in the width direction of the last 1, and include a repositionable portion that allows for changes in the width direction of the rearfoot portion of the last 1.

[0078] The heel repositioning section may be movable in the height direction in addition to the length and width directions. The heel repositioning section may be able to change its angle with respect to the common section 70. In this case, a cavity may be formed above and / or below the heel repositioning section to allow movement of the repositioning section. After adjusting the position of the repositioning section, the cavity may be filled with any filler material to fill the cavity. The filler material may be molded to the shape of the user's foot F.

[0079] [Eighth Embodiment] Figure 34 is a perspective view of last 1 of the eighth embodiment. In last 1 of the eighth embodiment, the common part 70 constitutes the bottom surface of last 1. The common part 70 has a shape that corresponds to the shape of the upper surface of the shoe sole to which the shoe upper molded from last 1 is joined. A groove is formed in the common part 70, and a plate-shaped foot width forming member 40 is assembled into this groove. The common part 70 shown in Figure 34 also functions as a foot length forming member 20.

[0080] When shoe soles are molded using a mold, their shape is constant regardless of the user's foot shape. The shape of the bottom surface of the shoe upper that is joined to the shoe sole is also constant regardless of the user's foot shape. Since the bottom surface shape of the shoe upper is constant, the shape of the bottom surface of last 1, which is used to mold the shoe upper, is also constant. Therefore, by making the shape of the bottom portion of last 1 a common part 70, the shape of last 1 can be stabilized.

[0081] Figure 35 is a side view of the last 1 covered by the cover body 90. The last 1 of the eighth embodiment shown in Figure 34, or the last 1 of the first to seventh embodiments described herein, may be covered from the outside by the cover body 90 at least in part. As shown in Figure 35, the entire last 1 may be covered from the outside by the cover body 90. In the case of the last 1 having a foot width forming member 40 in only a part of its length, as shown in Figure 30, the cover body 90 may be shaped to cover only a part of the last 1, at least covering the assembly of the foot length forming member 20 and the foot width forming member 40. The cover body 90 may be in the form of a sheet or a plate, as shown in Figure 35.

[0082] By covering last 1 with cover body 90, when molding the shoe upper using last 1 of the embodiment, the gap formed between the foot length forming member 20 and the foot width forming member 40 can be suppressed from affecting the shape of the shoe upper after molding. Therefore, a shoe upper of a predetermined shape can be molded more reliably.

[0083] As the cover body 90, a film that shrinks when heated, such as polystyrene film, may be used. In this case, the last 1 is covered with the film, and then heat is applied to the film to deform it, thereby forming the cover body 90 that covers the surface of the last 1. When the cover body 90 is thermally deformed, air (warm air) may be sent from the inside of the cover body 90. In this case, excessive inward contraction of the cover body 90 between adjacent foot length forming members 20 and adjacent foot width forming members 40 can be suppressed, thereby further improving the accuracy of molding the shoe upper.

[0084] The cover 90 may be a metal foil, such as aluminum foil. In this case, covering the surface of the last 1 with metal improves thermal conductivity, which is advantageous when heat-molding the shoe upper, as described later. Alternatively, the cover 90 may be a sock.

[0085] [Ninth Embodiment] Figure 36 is a perspective view of the last 1 of the ninth embodiment. Figure 37 is a partial cross-sectional view of the last 1 along the line XXXVII-XXXVII shown in Figure 36. In place of the cover body 90 described with reference to Figure 35, in the last 1 of the ninth embodiment, a cap 92 is inserted into the space partitioned by the leg length forming member 20 and the leg width forming member 40. In Figure 36, for simplification, the cap 92 is shown only in part of the space partitioned by the leg length forming member 20 and the leg width forming member 40, but it is desirable that the cap 92 be provided on at least the outermost part of the last 1, and more preferably that the cap 92 be provided on the entire last 1.

[0086] The cap 92 has a curved cross-section, as shown in Figure 37. The cap 92 may also have a partially spherical shape. The cap 92 is positioned to protrude from the upper edges of the leg length forming member 20 and the leg width forming member 40.

[0087] By using cap 92, the outer surface of last 1 can be made into a smooth curved surface. When molding the shoe upper using last 1, it is possible to suppress the transfer of the end faces of the foot length forming member 20 and / or foot width forming member 40 to the shoe upper, and the influence of the gap between the foot length forming member 20 and the foot width forming member 40 on the shape of the shoe upper. Therefore, it is possible to more reliably mold a shoe upper of a predetermined shape.

[0088] Figure 38 is a partial cross-sectional view of the last 1 equipped with a spherical cap 92. Instead of the curved shape of the cap 92 shown in Figure 37, the cap 92 may be spherical, as shown in Figure 38. Although Figure 38 illustrates a hollow sphere cap 92, the cap 92 may be a solid sphere.

[0089] [Tenth Embodiment] Figure 39 is a perspective view of the last 1 of the tenth embodiment. Figure 40 is a side view of the last 1 of the tenth embodiment. The last 1 of the tenth embodiment has a plate-shaped foot length forming member 20 and a plate-shaped foot width forming member 40, similar to the first to third embodiments. In the forefoot and midfoot portions of the last 1 of the tenth embodiment, the foot width forming members 40 are arranged in the longitudinal direction of the last 1, similar to the first to third embodiments.

[0090] The last 1 of the tenth embodiment is characterized by the configuration of the foot width forming member 40 in the portion corresponding to the heel of the foot. Specifically, in the portion corresponding to the heel of the foot, the foot width forming members 40 are arranged in a line in the height direction of the last 1. In the heel portion of the last 1, the foot length forming member 20 has a plurality of engagement grooves 30 arranged at equal intervals in the height direction. In the heel portion of the last 1, the plurality of foot width forming members 40 are assembled in the engagement grooves 30 and arranged at equal intervals in the height direction. The pitch may be equal, or the spacing in parts requiring particular precision may be set smaller than in other parts.

[0091] Each of the heel width forming members 40 has radial engagement grooves 50 formed therein. Plate-shaped engagement members 44 extending in the height direction are assembled into these radial engagement grooves 50. The strength of the heel portion of the last 1 is improved by the lattice-like arrangement of multiple foot width forming members 40 and multiple engagement members 44.

[0092] The heel area exhibits relatively large variations in foot shape from user to user. Furthermore, the heel area shows greater variation in the surface irregularities compared to other parts of the foot. By arranging multiple foot width forming members 40 in a row in the height direction, the reproducibility of the foot shape can be improved compared to forming the heel of the last 1 using only foot width forming members 40 extending in the height direction. Therefore, the accuracy of the last 1's shape can be further improved, making it possible to create a last 1 that more accurately reflects the user's foot shape.

[0093] [Eleventh Embodiment] In the eleventh embodiment, an example of a method for manufacturing a shoe upper using the last 1 described in the previous embodiments will be explained. Figure 41 is a perspective view showing the state in which the unmolded upper 200 is placed over the last 1. For example, a shoe upper material (unmolded upper 200) made of a fiber sheet containing heat-shrinkable yarn is prepared. The unmolded upper 200, which is larger than the outer shape of the last 1, is placed over the last 1 to obtain the configuration shown in Figure 41.

[0094] Figure 42 is a schematic diagram showing the process of heating the pre-molded upper 200 placed over the last 1. As shown in Figure 42, the last 1, with the pre-molded upper 200 placed over it, is placed inside the heating box 210. In this state, high-temperature steam 220 is released from the inner surface of the heating box 210. This steam heating heats the pre-molded upper 200. This steam heating heats the entire pre-molded upper 200 uniformly. The heat shrinkage yarn shrinks due to the heating, allowing the pre-molded upper 200 to conform to the shape of the last 1 and become the molded upper.

[0095] By going through this manufacturing process, it is possible to produce custom-made shoe uppers tailored to the shape of the user's foot F without using large-scale equipment.

[0096] The heating box 210 described above may be a steam oven. In addition to steam heating, the pre-molding upper 200 may also be heated by hot air heating, hot water heating, etc. Heating of the pre-molding upper 200 can be performed only in part, rather than as a whole. The molded upper thus obtained is then attached to a separately manufactured shoe sole by adhesive, heat fusion, etc.

[0097] During or after each of the above processes, the shoes are manufactured by performing tasks such as forming the tongue, processing the opening, attaching eyelets for the shoelaces, attaching decorative parts and tags, printing the logo, and attaching the insole.

[0098] The manufacturing method for the shoe upper is not limited to the heat shrinkage of a fiber sheet containing the heat-shrinkable yarn described above. Various methods can be employed, such as directly knitting the fabric around the last 1 or laminating it with a 3D printer. The last 1 of the embodiment can also be used in conventional shoe upper molding processes known in factories.

[0099] (Summary of disclosures in embodiments, etc.) The characteristic configurations disclosed in each of the embodiments and their modified forms described above can be summarized as follows:

[0100] A last according to one embodiment of the present disclosure is for molding a shoe upper that constitutes a shoe. The last comprises a length-forming member that defines the shape of the last in at least the longitudinal direction of the shoe, and a plurality of width-forming members that define the shape of the last in at least the width direction of the shoe and are assembled to the length-forming member.

[0101] In a last according to one embodiment of the present disclosure described above, at least one of the foot length forming member and the foot width forming member may have a position identification portion that indicates the arrangement of the foot length forming member and the foot width forming member in the last.

[0102] In a last according to one embodiment of the present disclosure described above, a plurality of foot width forming members are arranged in the longitudinal direction, and the spacing between adjacent foot width forming members may be smaller in the midfoot of the last than in the forefoot of the last.

[0103] In a last according to one embodiment of the present disclosure, the width-forming member has a plate-like shape, and a plurality of width-forming members are arranged in the longitudinal direction, and the thickness of the width-forming member may be smaller in the midfoot portion of the last than in the forefoot portion of the last.

[0104] In a last according to one embodiment of the present disclosure described above, a plurality of foot width forming members may be arranged in the height direction at the heel portion of the last.

[0105] In a last according to one embodiment of the present disclosure, the leg length forming member has a rod-like shape extending in the longitudinal direction, and the leg width forming member may have a through hole through which the leg length forming member passes.

[0106] In a last according to one embodiment of the present disclosure, a plurality of foot width forming members are arranged in the longitudinal direction, and spacers may be further provided between adjacent foot width forming members to determine the spacing between adjacent foot width forming members.

[0107] In a last according to one embodiment of the present disclosure described above, the leg-forming member may have a plate-like shape.

[0108] In a last according to one embodiment of the present disclosure, the leg-forming member may have a hollow or solid three-dimensional shape.

[0109] In a last according to one embodiment of the present disclosure described above, the leg length forming member may have an engagement groove, and the leg width forming member may be assembled into the engagement groove.

[0110] In a last according to one embodiment of the present disclosure, a second engagement groove is formed in the foot width forming member, and a foot length forming member is assembled into the second engagement groove. The engagement groove and the second engagement groove may have tapered portions that decrease in width as they approach the bottom of the groove.

[0111] In a last according to one embodiment of the present disclosure described above, the foot length forming member and the foot width forming member may be made of paper.

[0112] In a last according to one embodiment of the present disclosure described above, the foot length forming member and the foot width forming member may constitute part of the packaging material for packaging the shoes.

[0113] In a last according to one form of the present disclosure described above, the last may further comprise common parts whose shape and position are constant.

[0114] In a last according to one embodiment of the present disclosure described above, the common part may have a shape that constitutes the bottom surface of the last and corresponds to the shape of the top surface of the shoe sole to which the shoe upper is joined.

[0115] In a last according to one embodiment of the present disclosure described above, the last may further include a repositionable portion whose shape is immutable and whose position can be changed.

[0116] A last according to one embodiment of the present disclosure may further include a sheet-like or plate-like cover that covers at least a portion of the last from the outside.

[0117] A method for manufacturing a last according to one embodiment of the present disclosure is a method for manufacturing a last for molding a shoe upper that constitutes a shoe. This method for manufacturing a last comprises the following steps: A first step is to prepare a length-forming member that defines the shape of the last in at least the longitudinal direction of the shoe, and a plurality of width-forming members that define the shape of the last in at least the width direction of the shoe. A second step is to assemble the width-forming members to the length-forming member.

[0118] In a method for manufacturing a last according to one embodiment of the present disclosure, the steps for preparing the foot length forming member and the foot width forming member may include: generating a user foot shape model; generating a foot width forming model from the foot shape model for forming the foot width forming member; and processing a base member based on the foot width forming model to form the foot width forming member.

[0119] A method for manufacturing a shoe upper according to one embodiment of the present disclosure comprises the following steps: A first step is to place a pre-molded upper, made of a fiber sheet containing heat-shrinkable yarn, onto a last of any of the above-described curved surfaces. A second step is to heat the pre-molded upper to conform to the shape of the last to form a post-molded upper.

[0120] While embodiments have been described above, configurations that can be combined with each other may be appropriately combined in each embodiment. Furthermore, the embodiments disclosed herein should be considered in all respects to be illustrative and not restrictive. The scope of this invention is indicated not by the above description but by the claims, and all modifications within the meaning and scope of the claims are intended to be included. [Explanation of Symbols]

[0121] 1 Last, 10 Base member, 12 Shoe box, 20 Foot length forming member, 24 Spacer, 26 Base part, 28 Core part, 30, 50 Engagement groove, 31, 51 Opening, 32, 52 Groove bottom, 33, 53 Tapered part, 40 Foot width forming member, 42 Through hole, 60 Position identification part, 70 Common part, 80 Position change part, 82 Position adjustment mechanism, 90 Cover body, 92 Cap, 100 Last model, 110 Last cross-section model, 120 Foot length forming model, 140 Foot width forming model, 200 Pre-molded upper, 210 Heating box, 220 Steam, F Foot, FM Foot shape model, P Smartphone.

Claims

1. It is a last used to mold the shoe upper that makes up the shoe, A foot length forming member that defines the shape of the last in at least the longitudinal direction of the shoe, A plurality of foot width forming members are assembled to the foot length forming member in the length direction, defining the shape of the last of the shoe in at least the width direction, The last comprises a plurality of heel-forming members arranged in a line with spacing in the height direction to form the heel portion of the last, The heel forming member is assembled to the foot length forming member separately from the foot width forming member, in a last.

2. The last according to claim 1, wherein at least one of the leg length forming member and the leg width forming member has a position identification portion that indicates the arrangement of the leg length forming member and the leg width forming member in the last.

3. The last according to claim 1 or claim 2, wherein the spacing between adjacent foot width forming members is smaller in the midfoot portion of the last than in the forefoot portion of the last.

4. The foot width forming member has a plate-like shape, The last according to claim 1 or claim 2, wherein the thickness of the foot width forming member is smaller in the midfoot portion of the last than in the forefoot portion of the last.

5. The leg-lengthening member has a plate-like shape, according to any one of claims 1 to 4.

6. The leg-lengthening member has a hollow or solid three-dimensional shape, as described in any one of claims 1 to 4.

7. The leg-lengthening member has an engagement groove formed therein. The last according to claim 5 or 6, wherein the foot width forming member is assembled into the engagement groove.

8. The foot width forming member has a second engagement groove formed therein, and the foot length forming member is assembled into the second engagement groove. The last according to claim 7, referencing claim 5, wherein the engagement groove and the second engagement groove have tapered portions that decrease in groove width as they approach the bottom of the groove.

9. The last according to any one of claims 1 to 8, wherein the leg length forming member and the leg width forming member are made of paper.

10. The last according to any one of claims 1 to 9, further comprising a common part whose shape and position remain constant.

11. The last according to claim 10, wherein the common part constitutes the bottom surface of the last and has a shape corresponding to the shape of the upper surface of the shoe sole to which the shoe upper is joined.

12. The last according to any one of claims 1 to 11, further comprising a position-changing portion whose shape is constant and whose position can be changed.

13. The last according to any one of claims 1 to 12, further comprising a sheet-like or plate-like cover body that covers at least a portion of the last from the outside.

14. A method for manufacturing a last for forming the shoe upper that constitutes a shoe, A step of preparing a foot length forming member that defines the shape of the last in at least the longitudinal direction of the shoe, a plurality of foot width forming members that define the shape of the last in at least the width direction of the shoe, and a plurality of heel forming members that form the heel portion of the last, A step of assembling the leg width forming member to the leg length forming member, arranged in the longitudinal direction, The process includes the step of assembling the heel forming member onto the foot length forming member and arranging them side by side with spacing in the height direction, A method for manufacturing a last, wherein the heel forming member is assembled to the foot length forming member separately from the foot width forming member.

15. The aforementioned preparation steps are: The process of generating a user's foot shape model, A step of generating a foot width forming model for forming the foot width forming member from the foot shape model, The method for manufacturing a last according to claim 14, comprising the step of processing a base member based on the foot width forming model to form the foot width forming member.

16. A step of covering a pre-molded upper made of a fiber sheet containing heat-shrinkable yarn with a last according to any one of claims 1 to 13, A method for manufacturing a shoe upper, comprising the step of heating the pre-molded upper to conform to the shape of the last to form a post-molded upper.

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