Last and upper forming tool

Abstract

The present invention is a last or a lasting tool including the last, which is configured by combining a plurality of components including plate-like components, and in which alignment of a position of a lasting material is easily performed when the lasting material is shaped. In the last, at least a portion of a specific area of a lasting surface, which is an area corresponding to an upper end portion of a portion to which the lasting material is to be shaped, includes a plurality of plate-like components included in a plurality of components. The specific area of the portion including the plurality of plate-like components is defined by end surfaces of the plurality of plate-like components, which are arranged at intervals from each other in a circumferential direction of the upper end portion of the lasting material. A recessed portion, which becomes a mark for alignment of a position of the lasting material with the last when the lasting material is covered, is provided in the specific area of the portion including the plurality of plate-like components.

Description

Technical Field

[0001] The present invention relates to a shoe last for forming shoe uppers by overlaying the shoe upper and a shoe upper forming tool including the shoe last. Background Technology

[0002] Typically, in the manufacture of shoes, a shoe last (shoe mold) is used to shape the shoe upper (hereinafter also referred to as "upper") into a specified shape. The shoe last has a shaping surface on its surface, and the shoe upper is shaped by covering the shoe last with fabric or the like that that constitutes the shoe upper.

[0003] U.S. Patent Application Publication No. 2018 / 0014609 discloses the manufacture of shoes within a portable casing. U.S. Patent Application Publication No. 2016 / 0206049 discloses a shoe last preform that can be reshaped using shape memory polymers. Furthermore, Chinese Patent No. 109732913 discloses the manufacture of shoe lasts using 3D printing. Summary of the Invention

[0004] As long as a shoe last with a shaped surface that fits the wearer's foot can be easily manufactured, shoes with improved fit can be widely provided. As one method to achieve this, it is considered to manufacture a shoe last by assembling multiple components, including plate-like parts.

[0005] However, when manufacturing shoe lasts in this way, gaps will be generated on the surface of the shoe last (i.e., parts without plate-like components, etc.). Therefore, when forming the shoe upper, it becomes a problem to align and configure the unformed shoe upper (hereinafter also referred to as the shoe upper forming material) relative to the shoe last.

[0006] Therefore, the present invention was made in view of the aforementioned problems, and its object is to enable easy alignment of the shoe upper during the forming of the shoe upper in a shoe last constructed by combining multiple components including plate-shaped members and a shoe upper forming tool including the shoe last.

[0007] The shoe last based on the present invention is used for shoe upper forming, which is constructed by combining multiple components and can be formed by overlaying the shoe upper. At least a portion of a specific region corresponding to the upper end of the part to be formed in the forming surface for shaping the shoe upper includes multiple plate-shaped components included in the multiple components. The specific region including the portion of the multiple plate-shaped components is defined by the multiple plate-shaped components being arranged such that they are spaced apart from each other circumferentially along the upper end of the shoe upper, and the specific region is defined by each end face of the multiple plate-shaped components. In the shoe last based on the present invention, recesses serving as markers for positioning with the shoe last when overlaying the shoe upper are provided in the specific region including the portion of the multiple plate-shaped components.

[0008] A shoe upper forming tool according to a first aspect of the present invention includes: a shoe last according to the present invention; and a strip-shaped fixing member for fixing the shoe upper to the shoe last. In the shoe upper forming tool according to the first aspect of the present invention, the recess has a shape and size capable of receiving at least a portion of the fixing member, so as to be able to clamp and hold the shoe upper between the shoe upper and the fixing member.

[0009] A shoe upper forming tool according to a second aspect of the present invention includes: a shoe last according to the present invention; and a strip-shaped fixing member for fixing the shoe upper to the shoe last. In the shoe upper forming tool according to the second aspect of the present invention, the recess has a shape and size capable of holding the fixing member received in the recess.

[0010] The described and other objects, features, aspects and advantages of the present invention will become apparent from the following detailed description relating to the invention, which is understood in conjunction with the accompanying drawings. Attached Figure Description

[0011] Figure 1 This is a perspective view showing an example of a shoe manufactured using the shoe last of Embodiment 1.

[0012] Figure 2 yes Figure 1 The image shows a cross-sectional view of the shoe.

[0013] Figure 3 yes Figure 1 The image shows an exploded 3D view of the shoe.

[0014] Figure 4 This is a diagram showing the process of photographing a wearer's feet to obtain a foot model.

[0015] Figure 5 It is a 3D model of a foot.

[0016] Figure 6 It is a three-dimensional model of a shoe last made based on a foot shape model.

[0017] Figure 7 This is a three-dimensional view of the shoe last according to embodiment 1.

[0018] Figure 8 It is Figure 7 The diagram shows a plan view of the cut pattern of a portion of the multiple plate-like components included in the shoe last, represented by a cut-out wooden board.

[0019] Figure 9 It is Figure 7 The remaining portion of the multiple plate-like components included in the shoe last is a visual representation of the cut pattern of the wooden boards.

[0020] Figure 10 It means Figure 7 A three-dimensional diagram showing the assembly method of the shoe last.

[0021] Figure 11 It is used to... Figure 7 A partial fracture perspective view illustrating the assembly structure of the plate-shaped components in the shoe last.

[0022] Figure 12 It is used to... Figure 7 A schematic cross-sectional view illustrating the assembly structure of the plate-shaped components in the shoe last.

[0023] Figure 13A and Figure 13B This is a diagram used to illustrate the shoe upper forming tool of Embodiment 2.

[0024] Figure 14 This is a schematic cross-sectional view showing the state in which the shoe upper is held by the shoe upper forming tool of Embodiment 2.

[0025] Figure 15 This is a diagram used to illustrate the shoe upper forming tool of Embodiment 3.

[0026] Figure 16 This is a schematic cross-sectional view showing the state in which the shoe upper is held by the shoe upper forming tool of embodiment 3.

[0027] Figure 17 This is a diagram used to illustrate the shoe last of embodiment 4.

[0028] Figure 18 This is a schematic cross-sectional view showing the state in which the shoe upper is held by the shoe last of embodiment 4.

[0029] Figure 19 This is a diagram used to illustrate the shoe last of embodiment 5.

[0030] Figure 20This is a schematic cross-sectional view showing the state in which the shoe upper is held by the shoe last of embodiment 5.

[0031] Figure 21 This is a diagram used to illustrate the shoe last of embodiment 6.

[0032] Figure 22 This is a schematic cross-sectional view showing the state in which the shoe upper is maintained by the shoe last of embodiment 6.

[0033] Figure 23 This is a three-dimensional view of the shoe last according to embodiment 7.

[0034] Figure 24 This is a three-dimensional view of the shoe last according to embodiment 8. Detailed Implementation

[0035] Hereinafter, embodiments of the present invention will be described in detail with reference to the figures. Furthermore, in the embodiments shown below, the same or common parts are labeled with the same symbols as in the figures, and their descriptions will not be repeated. In the following description, terms such as front-back direction, left-right direction, and up-down direction are used. These directional terms refer to the direction observed from the viewpoint of a wearer wearing shoes placed on a flat surface such as the ground. For example, "front" refers to the toe side, and "back" refers to the heel side.

[0036] (Implementation Method 1)

[0037] Figure 1 This is a perspective view showing an example of a shoe manufactured using the shoe last of Embodiment 1. Figure 2 It is along Figure 1 The cross-sectional view of line II-II shown. Furthermore, Figure 3 yes Figure 1 The image shows an exploded 3D view of the shoes. First, refer to these... Figures 1 to 3 Before describing the shoe last of this embodiment, the shoe 1 manufactured using the shoe last will be described.

[0038] like Figures 1 to 3 As shown, the shoe 1 is a sock-like garment that covers the wearer's foot (i.e., the area from the ankle to the distal end), including a shoe shell 10, a sole 20, and an upper 30. An opening 31 is provided at the top of the shoe 1 for inserting the foot, and a space is formed inside the shoe 1 for the wearer's foot to insert when worn.

[0039] In shoe 1, sole 20 is housed in shoe shell 10, and upper 30 is housed in shoe shell 10 on top of sole 20. Thus, sole 20 is sandwiched between shoe shell 10 and upper 30.

[0040] The shoe shell 10 constitutes the outermost shell of the shoe 1, comprising a single flexible member formed in a bag shape. The shoe shell 10 has an opening 11 at its upper end. The shoe shell 10 covers the bottom and circumferential surfaces of the sole 20, as well as the surface of the upper 30. Furthermore, the outer surface of the bottom of the shoe shell 10 constitutes the contact surface of the shoe 1.

[0041] The shoe shell 10 can be made of virtually any material as long as it is flexible, preferably with moderate strength. From this perspective, the shoe shell 10 preferably comprises a resin or rubber material. Furthermore, the shoe shell 10 can be manufactured, for example, by injection molding or casting, or by shaping using a three-dimensional lamination molding apparatus. In particular, if the shoe shell 10 is manufactured using a three-dimensional lamination molding apparatus, it is possible to produce shoe shells 10 with a wide variety of structures that are difficult to manufacture by injection molding or casting.

[0042] The sole 20 supports the wearer's foot in the shoe 1 and includes a flat member capable of elastic deformation. The sole 20 is disposed in a space within the shoe shell 10, close to the space below the ground surface.

[0043] The sole 20 can be made of virtually any material, provided it can deform elastically, but preferably includes components with moderate strength yet excellent cushioning. From this perspective, the sole 20 can, for example, be a resin-based foam material comprising a resin material as a main component and a foaming agent or crosslinking agent as a secondary component. Alternatively, a rubber-based foam material comprising a rubber material as a main component and plasticizers, foaming agents, reinforcing agents, or crosslinking agents as secondary components can also be used.

[0044] The upper 30 constitutes the part of the shoe 1 that contacts the wearer's foot and includes a bag-shaped member that can be flexibly deformed. The upper 30 is disposed in the space inside the shoe shell 10, near the space above the opening 11. Moreover, the upper end of the upper 30 is positioned so as to extend outward from the opening 11, and the portion of the upper 30 extending from the opening 11 constitutes the shoe opening 31.

[0045] The upper 30 can be made of virtually any material, as long as it can deform flexibly; woven or knitted fabrics, non-woven fabrics, synthetic leather, resins, etc., are preferred. In particular, as described below, using woven or knitted fabrics, non-woven fabrics, etc., made of heat-shrinkable synthetic fibers can create an upper that is more suitable for the wearer's foot. Furthermore, examples of heat-shrinkable synthetic fibers include those with polyester, polyurethane, etc., as the main components.

[0046] That is, when the upper 30 is made of woven or knitted fabrics or non-woven fabrics of synthetic fibers with heat shrinkability, it is pre-formed into a bag shape. With the shoe last (described below) inserted into it, it is then heated. This heat shrinks the shoe, causing it to change shape while in close contact with the forming surface of the shoe last, and maintaining that changed shape. Therefore, by preparing a shoe last that corresponds to the shape of the wearer's foot and using it to form the upper 30, an upper 30 that fits the wearer's foot can be produced. Furthermore, if the heat treatment using the shoe last is performed while the upper 30 is assembled into the shoe shell 10, the upper 30 also fits the shoe shell 10, thereby further improving the fit.

[0047] Figure 4 This is a diagram showing the process of photographing a wearer's feet to obtain a foot model. Figure 5 It is a 3D model of a foot. Furthermore, Figure 6 This is a three-dimensional drawing of a shoe last model based on a foot shape model. Next, refer to these... Figures 4 to 6 An example of a method for generating a shoe last model in the case of manufacturing a shoe last that corresponds to the shape of the wearer's foot will be explained.

[0048] like Figure 4 As shown, when generating a shoe last model, firstly, image data of the wearer's foot F is obtained by photographing the wearer's foot F using a portable terminal capable of taking pictures, such as a smartphone P or a digital camera. The image data of foot F can also be taken in a store visited by the wearer. The store can be a fixed store or a mobile store using a car or trailer. Furthermore, the image data of foot F can also be taken at the wearer's own home. In such cases, for example, the image data of foot F taken by the wearer themselves is sent to the shoe manufacturer's server.

[0049] like Figure 5 As shown, the foot model FM is a three-dimensional model generated based on measurement data of various parts of the wearer's foot F obtained from image data of the foot F. For example, when the wearer'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. Furthermore, the foot model FM can be generated by performing calculations using both the photographed image data and data from a server used by the shoe manufacturer.

[0050] The foot model FM can be formed to match the shape of the wearer's foot F. Furthermore, based on design or functional reasons, specific parts of the foot model FM can be modified to the required dimensions relative to the shape of the wearer's foot F.

[0051] like Figure 6 As shown, the shoe last model LM is based on Figure 5 The foot model FM shown is a model customized according to the shape of the wearer's foot F. By making a shoe last according to the shoe last model LM, a shoe last corresponding to the shape of the wearer's foot can be manufactured.

[0052] Figure 7 This is a perspective view of the shoe last according to this embodiment. Next, referring to the... Figure 7 The structure of the shoe last 100A in this embodiment will be described. Furthermore, the shoe last 100A in this embodiment is manufactured based on the shoe last model generation method and corresponds to the shape of the wearer's foot.

[0053] like Figure 7 As shown, the shoe last 100A is constructed by combining multiple detachable plate-shaped components. The multiple plate-shaped components include multiple foot-length components 101, multiple toe components 102, multiple instep components 103, multiple ankle components 104, multiple heel circumferential components 105, multiple heel vertical components 106, and multiple lateral components 107.

[0054] The multiple foot-length direction components 101 each include plate-shaped components extending along the front-back direction (i.e., the foot-length direction) and the vertical direction (i.e., directions orthogonal to the foot-length and foot-width directions). The multiple foot-length direction components 101 include both long and short components (see reference). Figure 8 The elongated member of the plurality of foot length direction members 101 is the base frame of the shoe last 100A, and is arranged to extend along the front-back direction at approximately the center in the left-right direction (i.e., the foot width direction). The short members of the plurality of foot length direction members 101 are arranged at positions corresponding to the front of the wearer's toes.

[0055] The multiple toe components 102 each include plate-shaped components extending in the left-right direction and the up-down direction. The multiple toe components 102 are positioned corresponding to the wearer's toes and are assembled to the multiple foot-length components 101.

[0056] Multiple instep components 103 each include plate-shaped components extending in the left-right direction and the up-down direction. The multiple instep components 103 are disposed at positions corresponding to the instep of the wearer and are assembled to multiple foot-length components 101.

[0057] Multiple ankle components 104 each include plate-shaped components extending in the left-right and up-down directions. The multiple ankle components 104 are positioned corresponding to the wearer's ankle and assembled to multiple foot-length components 101.

[0058] Multiple heel circumferential components 105 each include plate-shaped components extending in the front-back direction and the left-right direction. The multiple heel circumferential components 105 are disposed at positions corresponding to the wearer's heel and are assembled to multiple foot length direction components 101.

[0059] Multiple heel vertical components 106 each include a plate-like component extending in the vertical direction. The multiple heel vertical components 106 are arranged radially within a range of approximately 180° about an axis extending in the vertical direction. The multiple heel vertical components 106 are positioned corresponding to the wearer's heel and are assembled to multiple heel circumferential components 105.

[0060] The multiple side components 107 each include plate-shaped components extending in the front-back direction and the left-right direction. The multiple side components 107 are positioned corresponding to the wearer's toes and instep, and are assembled to multiple toe components 102 and multiple instep components 103.

[0061] These multiple foot-length components 101, multiple toe components 102, multiple instep components 103, multiple ankle components 104, multiple heel circumferential components 105, multiple heel vertical components 106, and multiple lateral components 107, in their combined state, define the forming surface S of the shoe last 100A by their respective end faces (i.e., the surfaces extending along the thickness direction of the plate-like components). The shoe upper 30 is formed by covering the forming surface S with an upper forming material.

[0062] Specifically, during the forming of the upper 30, as described above, the upper forming material is applied to the shoe last 100A in a manner that covers the forming surface S, followed by heat treatment. As described above, especially when the upper 30 is made of woven or knitted fabrics, non-woven fabrics, or the like with heat-shrinkable synthetic fibers, the heat-shrinkable yarns contained in the upper 30 are shrunk by the heat treatment, thereby creating the upper 30 along the forming surface S of the shoe last 100A.

[0063] Here, slot-like grooves, protruding locking parts, or through-hole-like locking parts are provided at designated positions on each of the multiple plate-shaped components. These slots, locking parts, and locking parts all serve as assembly parts when assembling the multiple plate-shaped components together, and will be described in detail below.

[0064] Furthermore, a recess 109 is formed at a designated position in the shoe last 100A. The recess 109 can be used as an indicator for positioning the upper forming material during the forming of the upper 30, and will be described in detail below.

[0065] The plurality of foot-length components 101, the plurality of toe components 102, the plurality of instep components 103, the plurality of ankle components 104, the plurality of heel circumferential components 105, the plurality of heel vertical components 106, and the plurality of lateral components 107 all include wooden boards, more specifically, from the wooden boards B1 and B2 described below as materials (see below). Figure 8 and Figure 9 It was cut out from the top.

[0066] Figure 8 It is Figure 7 The diagram shows a plan view of the cut patterns of a portion of the multiple plate-like components included in the shoe last, represented by a cut-out wooden board. Figure 9 It is Figure 7 The diagram shows a plan view of the cut patterns of the remaining portions of the multiple plate-like components included in the shoe last, represented by the cut-out patterns of wooden boards. Next, refer to these... Figure 8 and Figure 9 The wooden boards B1 and B2, which are cut into multiple board-shaped components, are described.

[0067] like Figure 8 As shown, multiple leg-length direction components 101, multiple heel circumferential direction components 105, and multiple heel vertical direction components 106 are arranged on the wooden board B1. The multiple leg-length direction components 101, multiple heel circumferential direction components 105, and multiple heel vertical direction components 106 are respectively arranged in regions R1, R5, and R6 on the wooden board B1.

[0068] like Figure 9 As shown, multiple toe components 102, multiple instep components 103, multiple ankle components 104, and multiple lateral components 107 are arranged on the wooden board B2. The multiple toe components 102, multiple instep components 103, multiple ankle components 104, and multiple lateral components 107 are respectively arranged in regions R2 to R4 and region R7 on the wooden board B2.

[0069] Here, the cutting of wooden boards B1 and B2 can be performed, for example, by laser irradiation. In this way, by cutting wooden boards B1 and B2 using laser irradiation, multiple board-shaped components can be cut quickly and with high precision. Furthermore, by using laser irradiation for cutting, the multiple board-shaped components to be cut can be individually marked with markings such as numbers or letters by changing the laser irradiation conditions (see [reference]). Figure 8 and Figure 9 This allows it to be used as an indicator when assembling multiple plate-shaped components. Furthermore, the cutting method is not limited to this; it can also be performed using a metal knife or by cutting with a high-pressure water jet.

[0070] Furthermore, by generating the cutting pattern under the condition that the areas of regions R1 to R7 on which multiple plate-shaped components are arranged on wooden boards B1 and B2 are minimized, the generation of waste material can be significantly reduced. For example, in the case of manufacturing standard shoes, by generating the cutting pattern in a manner that satisfies the aforementioned conditions, the size of each of wooden boards B1 and B2 can be reduced to 300mm × 450mm.

[0071] Medium-density fiberboard (MDF) can be appropriately used for wood-based panels B1 and B2. Furthermore, wood-based panels B1 and B2 are not limited to MDF; they can also be insulation fiberboard (IB), hard fiberboard (HB), etc. For IB, Class A IB, tatami boards, and sheathing boards can be used. For HB, standard boards and flexible boards can be used. Alternatively, wood-based panels B1 and B2 can be omitted, and boards made of various materials such as highly recyclable cardboard, cork, metal, or thermoplastic resin can be used instead.

[0072] Figure 10 It means Figure 7 A perspective view showing the assembly method of the shoe last. Next, refer to the... Figure 10 The assembly method of the shoe last 100A in this embodiment will be described.

[0073] like Figure 10 As shown, the shoe last 100A is assembled by sequentially interlocking multiple plate-shaped components. In the shoe last 100A of this embodiment, for example, multiple ankle components 104 are assembled on the long strip component of multiple foot length direction components 101, and then these plate-shaped components are assembled on them in the following order: multiple heel circumferential components 105, multiple heel vertical direction components 106, multiple instep components 103, multiple toe components 102, multiple lateral components 107, and the short strip component of multiple foot length direction components 101.

[0074] Thus, assembled Figure 7 The shoe last shown is 100A. Here, Figure 10 The assembly process is illustrated illustratively, specifically the stage where one of the multiple toe components 102 is assembled onto the multiple foot-length components 101. Furthermore, the assembly sequence is merely an example and may be varied appropriately.

[0075] The assembly of plate-shaped components can utilize the slit-like grooves, protruding locking portions, or through-hole-like locking portions provided in each component as assembly parts. Specifically, such as... Figure 10As shown, for example, in the stage of assembling one of the multiple toe components 102 into multiple foot length direction components 101, the grooves, locking portions and locked portions provided in each of the multiple foot length direction components 101 and the multiple grooves, locking portions and locked portions provided in one toe component 102 can be used.

[0076] The following description, in order to provide a more detailed explanation of the aforementioned aspects, will refer to the above description. Figure 10 In addition, refer to Figure 11 and Figure 12 . Figure 11 and Figure 12 They are used to... Figure 7 Partial fracture perspective view and schematic cross-sectional view illustrating the assembly structure of the plate-like components in the shoe last. Furthermore, Figure 11 The image shows the state before assembly. Figure 12 The image shows the assembled state.

[0077] In the following description, for ease of understanding, we will focus on the assembly of one of the plurality of foot length direction components 101 with the one toe component 102, and will describe one of the plurality of foot length direction components 101 as the first component 110 and the one toe component 102 as the second component 120.

[0078] like Figure 10 and Figure 11 As shown, the first component 110 has a first plate-shaped portion 111 including a pair of main surfaces 111a, main surfaces 111b and end surfaces 111c. The first plate-shaped portion 111 is provided with a first component groove portion 112 as a first component support portion, a pair of locking portions 113 as a first component locking portion, and a locked portion 114 as a first component locked portion.

[0079] The groove 112 has a notch shape extending linearly to the end face 111c of the first plate-shaped portion 111. A pair of locking portions 113 are provided on the inner side surface of the first plate-shaped portion 111, which defines a portion of the groove 112. Each of the locking portions 113 has a protruding shape. The pair of locking portions 113 are provided facing each other on one and the other side surface of the pair of inner side surfaces in a direction intersecting the extending direction of the groove 112. Each of the locking portions 113 has a semi-cylindrical shape.

[0080] The locking portion 114 has a through-hole shape and is disposed on the first plate-shaped portion 111 such that it reaches a pair of main surfaces 111a and 111b of the first plate-shaped portion 111. The locking portion 114 is located on the extension line of the extending direction of the groove portion 112. The locking portion 114 is rectangular in plan view.

[0081] On the other hand, the second component 120 has a second plate-shaped portion 121 including a pair of main surfaces 121a, main surfaces 121b and end surfaces 121c. The second plate-shaped portion 121 is provided with a second component groove portion 122 as a second component support portion, a pair of locking portions 123 as second component locking portions, and a locked portion 124 as a locked portion of the second component.

[0082] The groove 122 has a notch shape extending linearly to the end face 121c of the second plate-shaped portion 121. A pair of locking portions 123 are provided on the inner side surface of the second plate-shaped portion 121 defining a portion of the groove 122. Each of the locking portions 123 has a protruding shape. The pair of locking portions 123 are provided facing each other on one and the other side surface of the pair of inner side surfaces in a direction intersecting the extending direction of the groove 122. Each of the locking portions 123 has a semi-cylindrical shape.

[0083] The locking portion 124 has a through-hole shape and is disposed on the second plate-shaped portion 121 such that it reaches a pair of main surfaces 121a and 121b. The locking portion 124 is located on the extension line of the groove portion 122 in the extending direction. The locking portion 124 is rectangular in plan view.

[0084] When assembling these first components 110 and second components 120, the first plate-shaped portion 111 of the first component 110 and the second plate-shaped portion 121 of the second component 120 are positioned so as to cross each other, and the groove 122 of the second component 120 is positioned at a position corresponding to the groove 112 provided in the first component 110. In this state, the second component 120 is pressed toward the first component 110 in the direction of arrow AR1 shown in the figure.

[0085] Thus, the first plate-shaped portion 111 of the first component 110 is received by the groove 122 of the second component 120, and the second plate-shaped portion 121 of the second component 120 is received by the groove 112 of the first component 110, thereby engaging the first plate-shaped portion 111 and the second plate-shaped portion 121.

[0086] At this time, not only is the first plate-shaped portion 111 inserted into the groove portion 122 and fitted into the groove portion 122, but also... Figure 12 As shown, by inserting a pair of protruding locking portions 123 provided on the second component 120 into a through hole-shaped locking portion 114 provided on the first component 110, the locking portion 114 is locked by the pair of locking portions 123.

[0087] At this time, the portion of the locked part 114 exposed on one of the pair of main surfaces 111a and 111b of the first plate-shaped portion 111 is locked by one of the pair of locked parts 123, and the portion of the locked part 114 exposed on the other of the pair of main surfaces 111a and 111b of the first plate-shaped portion 111 is locked by the other of the pair of locked parts 123.

[0088] Furthermore, based on this, not only is the second plate-shaped portion 121 inserted into the groove portion 112 to fit the second plate-shaped portion 121 into the groove portion 112, but also, although the illustration is omitted, the pair of protruding locking portions 113 provided on the first component 110 are inserted into the through hole-shaped locked portion 124 provided on the second component 120, thereby locking the locked portion 124 by the pair of locking portions 113.

[0089] At this time, the portion 124 exposed on one of the pair of main surfaces 121a and 121b of the second plate-shaped portion 121 is locked by one of the pair of locking portions 113, and the portion 124 exposed on the other of the pair of main surfaces 121a and 121b of the second plate-shaped portion 121 is locked by the other of the pair of locking portions 113.

[0090] Furthermore, the engagement of the first plate-shaped portion 111 with respect to the groove portion 122 and the engagement of the second plate-shaped portion 121 with respect to the groove portion 112 can be configured in a close manner between these components. In order to facilitate insertion or to take into account the error of dimensional accuracy, a small gap may also be generated between these components.

[0091] By constructing it in the manner described above, and by fitting the first plate-shaped portion 111 into the groove portion 122, while Figure 11 The first component 110 and the second component 120 are fixed in the Y-axis direction as shown, by fitting the second plate-shaped portion 121 into the groove portion 112, while Figure 11 The first component 110 and the second component 120 are fixed in the X-axis direction as shown, and are locked by the locking part 114 using the locking part 123. Figure 11 The first component 110 and the second component 120 are fixed in the X-axis and Z-axis directions, respectively, by means of the locking part 113 and the locking part 124. Figure 11 The first component 110 and the second component 120 are fixed in the Y-axis and Z-axis directions, respectively.

[0092] Therefore, by adopting the aforementioned structure, the first component 110 and the second component 120 can be securely fixed together by a simple operation of positioning the first component 110 and the second component 120 and pressing the second component 120 into the first component 110. Furthermore, in the shoe last 100A of this embodiment, the assembly structure can be applied to the assembly parts of all plate-shaped components included in the shoe last 100A.

[0093] Therefore, by constructing it in the manner described above, the multiple plate-like components it comprises can be easily and reliably fixed, and a shoe last with mechanical strength that prevents the plate-like components from falling off can be easily, quickly, and simply manufactured.

[0094] Furthermore, by manufacturing the shoe last 100A of this embodiment in the manner described above, the shoe last can be produced quickly and easily, so that, for example, the wearer can personally experience the process. That is, as an example, the wearer can personally experience the following process: taking a picture of the wearer's foot F in a store visited by the wearer to obtain image data, generating a shoe last model LM based on this, and then manufacturing multiple plate-shaped parts based on this, which the wearer then assembles themselves, thereby producing the shoe last 100A.

[0095] Here, as Figure 7 As shown, in the shoe last 100A of this embodiment, as described above, a recess 109 is provided at a predetermined position in the shoe last 100A. The recess 109 is located in a specific region of the forming surface S, corresponding to the upper end portion of the upper 30 of the manufactured shoe 1 to be formed. Furthermore, in this embodiment, the upper end portion of the manufactured shoe 1 ( Figure 1 and Figure 2 The part represented by the symbol UP is the part where the shoe opening 31 is formed, so the specific area in the forming surface S becomes the part corresponding to the shoe opening 31.

[0096] Specifically, the recess 109 is formed by cutting off a portion of the end of a plate-shaped member located at a position corresponding to a specific area, and is provided in a ring-shaped manner. More specifically, in the shoe last 100A of this embodiment, the recess 109 is provided in a portion of a long strip member of a plurality of foot length direction members 101, a plurality of ankle members 104, a plurality of heel circumferential members 105, and a plurality of heel vertical direction members 106.

[0097] By constructing it in the manner described, the recessed portion 109 can be used as a marker during the forming of the shoe upper 30.

[0098] That is, in the shoe last 100A of this embodiment, the shoe last 100A is constructed by combining multiple plate-shaped parts. Therefore, multiple gaps (i.e., the parts where no plate-shaped parts are arranged) will be generated on the forming surface S. Without any processing, it is not easy to align the position of the shoe upper forming material.

[0099] However, as described above, by providing an overall annular recess 109 corresponding to the shoe opening 31 in a specific area of ​​the forming surface S, and by arranging the upper end of the shoe upper forming material to overlap with the recess 109 when covering the shoe last 100A with the shoe upper forming material, the position of the shoe upper forming material relative to the shoe last 100A can be aligned.

[0100] Therefore, if the shoe last 100A of this embodiment is manufactured, the position of the shoe upper 30 can be easily aligned during the forming of the shoe upper 30, which not only improves the finished effect of the manufactured shoe 1, but also greatly improves its productivity.

[0101] (Implementation Method 2)

[0102] Figure 13A and Figure 13B This diagram is used to illustrate the shoe upper forming tool of Embodiment 2. Figure 14 This is a schematic cross-sectional view showing the state in which the shoe upper is held by the shoe upper forming tool. Hereinafter, refer to these... Figure 13A , Figure 13B and Figure 14 The shoe upper forming tool 200A of this embodiment will be described. Furthermore, Figure 13A and Figure 13B This diagram illustrates, in stages, the application of upper forming material 300 onto the shoe last 100A provided by the upper forming tool 200A. Figure 14 Indicates along Figure 13B The cross-section of line XIV-XIV shown.

[0103] like Figure 13A , Figure 13B and Figure 14 As shown, the shoe upper forming tool 200A includes the shoe last 100A of Embodiment 1 and a strap 210 as a strap-shaped fixing member. The strap 210 clamps and holds the shoe upper forming material 300 (which becomes the shoe upper 30 after forming) between itself and the shoe last 100A. It includes, for example, a ring-shaped member with heat resistance and elasticity, such as one made of resin or rubber. On the other hand, the shoe upper forming material 300 has a bag-like shape with an open top.

[0104] like Figure 13AAs shown, during the forming of the upper 30, the upper forming material 300 is first applied to cover the bottom surface of the shoe last 100A and the peripheral surface of the portion located on the side of the bottom surface. More specifically, the shoe last 100A is inserted into the bag-shaped upper forming material 300 through an opening provided at the upper end of the upper forming material 300, thereby covering the forming surface S of the shoe last 100A with the upper forming material 300.

[0105] At this time, the upper end of the shoe upper molding material 300, which is attached to the shoe last 100A, is configured to cover the recess 109 provided in the shoe last 100A. Furthermore, this state is shown in... Figure 13A In, but in the Figure 13A For ease of understanding, only one ankle component 104 of the shoe last 100A is shown in the illustration.

[0106] Next, as Figure 13A , Figure 13B and Figure 14 As shown, the strap 210 is fitted to the upper end of the upper molding material 300 from the outside. At this time, the strap 210 is elastically deformed in a way that expands outward by the application of external force and is configured to surround the upper end of the upper molding material 300. Then, the external force is removed and it shrinks, thereby fitting into the upper end of the upper molding material 300.

[0107] At this time, the contracted band 210 is inserted into the recess 109 of the shoe last 100A by wrapping around a portion of the upper end of the upper molding material 300. Thus, the upper end of the upper molding material 300 is clamped and held by the recess 109 and the band 210. When the band 210 is inserted into the recess 109, the position of the upper molding material 300 is adjusted using the recess 109 as a positioning marker. Furthermore, this state is shown in… Figure 13B In, but in the Figure 13B For ease of understanding, only one ankle component 104 of the shoe last 100A is shown in the illustration.

[0108] Based on the above, the shoe upper forming material 300 is positioned relative to the shoe last 100A. Subsequently, the aforementioned heat treatment is performed, thereby forming the shoe upper 30.

[0109] In order to achieve the positioning operation, the shoe upper forming tool 200A in this embodiment is configured to have a shape and size that can accommodate at least a portion of the strap 210, so that the recess 109 provided in the shoe last 100A can be clamped between the shoe upper forming material 300 and the strap 210.

[0110] Therefore, by constructing it in the manner described above, the position of the upper 30 can be easily aligned during the forming of the upper 30, which not only improves the finished effect of the manufactured shoe 1, but also greatly improves its productivity.

[0111] (Implementation Method 3)

[0112] Figure 15 This diagram is used to illustrate the shoe upper forming tool of Embodiment 3. Figure 16 This is a schematic cross-sectional view showing the state in which the shoe upper is held by the shoe upper forming tool. Hereinafter, refer to these... Figure 15 and Figure 16 The shoe upper forming tool 200B of this embodiment will be described. Furthermore, Figure 16 The cross-section shows the portion including the retaining portion 104a provided in the recessed portion 109, in the state where the shoe upper forming material 300 is covered on the shoe last 100B provided by the shoe upper forming tool 200B.

[0113] like Figure 15 and Figure 16 As shown, the shoe upper forming tool 200B includes a shoe last 100B having a structure similar to that of the shoe last 100A in Embodiment 1, and a line 220 as a strip-shaped fixing member. Furthermore, in Figure 15 For ease of understanding, only the three ankle components 104 in the shoe last 100B are shown in the illustration.

[0114] Compared with the shoe last 100A of Embodiment 1, the only difference in shoe last 100B is the shape of the recess 109 at the end of the plate-shaped member. Specifically, as... Figure 15 As shown, the recess 109 has a shape in which the end of the ankle member 104, which is a plate-shaped component, is cut out into an approximately L-shape when viewed from above, thereby providing a protruding retaining portion 104a on the ankle member 104.

[0115] On the other hand, such as Figure 16 As shown, thread 220 can be sewn through the upper molding material 300, for example, including heat-resistant components such as resin or metal.

[0116] like Figure 16 As shown, thread 220 is sewn at a predetermined position at the upper end of the shoe upper forming material 300 in a relaxed state along the circumference of the upper end. That is, thread 220 is sewn alternately along the circumference of the upper end of the shoe upper forming material 300, penetrating towards both the inner and outer circumferential surfaces, and particularly on the inner circumferential surface of the upper end of the shoe upper forming material 300, in a relaxed state such that a gap is formed between the inner circumferential surface and the portion of thread 220 protruding from the inner circumferential surface. The sewing of thread 220 onto the shoe upper forming material 300 is performed before the shoe upper forming material 300 is attached to the shoe last 100B.

[0117] The upper molding material 300, with thread 220 sewn in the aforementioned manner, is then attached to the shoe last 100B. At this time, the slack portion of the thread 220 is embedded in the recess 109 of the shoe last 100A. Furthermore, the slack portion of the thread 220 is held in place by the holding portion 104a of the ankle member 104, which is a plate-like component. By appropriately adjusting the circumference of the thread 220 beforehand, the upper molding material 300 covering the portion of the shoe last 100B can be prevented from becoming loose or wrinkled.

[0118] Based on the above, by appropriately adjusting the sewing position of the thread 220 relative to the upper forming material 300, the positioning of the upper forming material 300 relative to the shoe last 100B can be completed by performing the aforementioned operation. Subsequently, the aforementioned heat treatment is performed, thereby forming the upper 30. Furthermore, after forming the upper 30, the thread 220 is removed from the upper 30.

[0119] In order to achieve the positioning operation, in the shoe upper forming tool 200B of this embodiment, the recess 109 is configured to have a shape and size that can hold the line 220 contained in the recess 109.

[0120] Therefore, by constructing it in the manner described above, the position of the upper 30 can be easily aligned during the forming of the upper 30, which not only improves the finished effect of the manufactured shoe 1, but also greatly improves its productivity.

[0121] (Implementation Method 4)

[0122] Figure 17 This diagram is used to illustrate the shoe last of embodiment 4. Figure 18 This is a schematic cross-sectional view showing the state in which the shoe upper is held by the shoe last. Hereinafter, refer to these... Figure 17 and Figure 18 The shoe last 100C of this embodiment will be described.

[0123] like Figure 17 As shown, the shoe last 100C of this embodiment differs from the shoe last 100A of Embodiment 1 only in the shape of the recess 109 at the end of the plate-shaped member. Specifically, the recess 109 has a shape that tapers gently compared to the periphery of the ankle member 104, which is a plate-shaped member. Furthermore, in Figure 17 For ease of understanding, only the three ankle components 104 in the shoe last 100B are shown in the illustration.

[0124] like Figure 18As shown, a shoe last 100C constructed in the aforementioned manner is formed by sewing an elastic material 301 onto the upper end of the shoe upper forming material 300. The elastic material 301 may be a sheet-like component with heat resistance and elasticity, such as that made of resin or rubber. Furthermore, the elastic material 301 may form part of the shoe upper 30 or may be removed after the shoe upper 30 has been formed.

[0125] When the upper molding material 300 is attached to the shoe last 100C, an external force is applied to the elastic material 301, causing it to elastically deform in a way that expands outward. Then, the elastic material 301 is positioned to surround the recess 109 of the shoe last 100C, and the external force is removed. This causes the elastic material 301 to contract, thereby embedding the upper ends of the elastic material 301 and the upper molding material 300 into the recess 109. Furthermore, in Figure 18 For ease of understanding, only one ankle component 104 of the shoe last 100C is shown in the illustration.

[0126] In this structure, the upper forming material 300 is attached to the shoe last 100C by using the recessed portion 109 as a marker, thereby positioning the upper forming material 300 relative to the shoe last 100C. Subsequently, the heat treatment is performed, thereby forming the upper 30.

[0127] Therefore, when constructed in the manner described above, the position of the upper 30 can be easily aligned during the forming of the upper 30, which not only improves the finished effect of the manufactured shoe 1, but also greatly improves its productivity.

[0128] (Implementation Method 5)

[0129] Figure 19 This diagram is used to illustrate the shoe last of embodiment 5. Figure 20 This is a schematic cross-sectional view showing the state in which the shoe upper is held by the shoe last. Hereinafter, refer to these... Figure 19 and Figure 20 The shoe last 100D of this embodiment will be described.

[0130] like Figure 19 As shown, the last 100D of this embodiment differs from the last 100A of Embodiment 1 only in the shape of the recess 109 at the end of the plate-shaped member. Specifically, the recess 109 is formed such that it is gently cut into the ankle member 104, which is a plate-shaped member, in the width direction. Therefore, a hook-shaped locking piece 104b is provided at the end of the ankle member 104. Furthermore, in Figure 19 For ease of understanding, only the three ankle components 104 in the shoe last 100D are shown in the illustration.

[0131] like Figure 20 As shown, when the upper molding material 300 is attached to the shoe last 100D, the upper end of the upper molding material 300 is inserted into the recess 109 provided in the shoe last 100D. Thus, the portion of the upper molding material 300 inserted into the recess 109 is held in place by being clamped by the wall portion of the designated recess 109 of the shoe last 100D (i.e., the wall portion of the locking piece 104b and the portion opposite to it). Furthermore, in Figure 20 For ease of understanding, only one ankle component 104 of the shoe last 100D is shown in the illustration.

[0132] In this structure, the upper forming material 300 is attached to the shoe last 100D by using the recessed portion 109 as a marker, thereby positioning the upper forming material 300 relative to the shoe last 100D. Subsequently, the aforementioned heat treatment is performed, thereby forming the upper 30.

[0133] In order to achieve the positioning operation, the shoe last 100D in this embodiment is configured such that recesses 109 are formed at the ends of each of the plurality of plate-shaped members, and a clamping portion for holding the upper forming material 300 is formed by defining a portion of the recesses 109.

[0134] Therefore, by constructing it in the manner described above, the position of the upper 30 can be easily aligned during the forming of the upper 30, which not only improves the finished effect of the manufactured shoe 1, but also greatly improves its productivity.

[0135] (Implementation Method 6)

[0136] Figure 21 This diagram is used to illustrate the shoe last of embodiment 6. Figure 22 This is a schematic cross-sectional view showing the state in which the shoe upper is held by the shoe last. Hereinafter, refer to these... Figure 21 and Figure 22 The shoe last 100E of this embodiment will be described.

[0137] like Figure 21 As shown, the shoe last 100E of this embodiment differs from the shoe last 100D of embodiment 5 only in the shape of the locking piece 104b provided at the end of the plate-shaped member. That is, the locking piece 104b is configured such that its front end extends outward, and the portion of the locking piece 104b facing the recess 109 has a curved shape.

[0138] In the shoe last 100E constructed in the manner described above, as Figure 22As shown, when the upper molding material 300 is inserted into the recess 109 of the last 100E, the upper molding material 300 will not contact the front end of the sharp locking piece 104b, and in the state where the upper molding material 300 is held by the last 100E, the upper molding material 300 is held by the curved portion rather than the front end of the sharp locking piece 104b.

[0139] Therefore, when configured in the manner described above, not only can the effects described in Embodiment 5 be obtained, but also the effect of suppressing damage or fraying to the upper molding material 300 or even the upper 30 can be obtained.

[0140] (Implementation Method 7)

[0141] Figure 23 This is a perspective view of the shoe last according to embodiment 7. Hereinafter, refer to the... Figure 23 The shoe last 100F of this embodiment will be described. Furthermore, the shoe last 100F of this embodiment is manufactured according to the shoe last model generation method described above, and basically corresponds to the shape of the wearer's foot.

[0142] like Figure 23 As shown, the shoe last 100F is similar to the shoe last 100A of Embodiment 1 in that it is constructed by combining multiple components, but its structure differs in that the multiple components include block-shaped components in addition to multiple plate-shaped components. More specifically, the multiple components include a base component 108 as a block-shaped component and multiple toe components 102, multiple instep components 103, and multiple ankle components 104 as plate-shaped components.

[0143] The base component 108 includes a front toe portion 131 corresponding to the front end of the wearer's toes, a sole portion 132 corresponding to the back end of the wearer's toes and the front end of the heel, and a rear heel portion 133 corresponding to the back end of the wearer's heel.

[0144] Here, the base component 108 serves as the base frame for assembling the plurality of plate-shaped components, defining the bottom surface of the shoe last 100F. The base component 108 may contain, for example, resin or metal, wood, etc., and preferably, rigid resin.

[0145] On the other hand, the structures of the multiple toe components 102, multiple instep components 103, and multiple ankle components 104 are basically the same as those of the components in the shoe last 100A of Embodiment 1, and they each include a wooden board. Here, the multiple toe components 102, multiple instep components 103, and multiple ankle components 104 are arranged in multiple layers along the front-back direction (i.e., the length direction of the foot).

[0146] These base components 108, multiple toe components 102, multiple instep components 103, and multiple ankle components 104, in their combined state, define the forming surface S of the shoe last 100F. More specifically, in the base component 108, the forming surface S of the shoe last 100F is defined by its outer surface, and in the multiple toe components 102, multiple instep components 103, and multiple ankle components 104, the forming surface S of the shoe last 100F is defined by their respective end faces (i.e., the surfaces extending along the thickness direction of the plate-like components).

[0147] Here, the forming surface S defined by the base component 108 is the part of the overall outer surface of the foot whose shape is not easily varied by each wearer. On the other hand, the forming surface S defined by the multiple toe components 102, the multiple instep components 103, and the multiple ankle components 104 is the part of the overall outer surface of the foot whose shape is easily varied by each wearer.

[0148] Therefore, as described above, by using a combination of a base component 108 as a block component and multiple toe components 102, multiple instep components 103 and multiple ankle components 104 as plate components to form a shoe last 100F, and by preparing the base component 108 in advance according to the size of each shoe to be manufactured, shoe lasts can be manufactured more efficiently.

[0149] Here, in the shoe last 100F of this embodiment, a recess 109 is provided at a predetermined position in the shoe last 100F. The recess 109 is located in a specific region of the forming surface S, corresponding to the upper end of the portion of the upper 30 of the manufactured shoe 1 to be formed. Furthermore, in this embodiment, the upper end of the manufactured shoe 1 ( Figure 1 and Figure 2 The portion (represented by the symbol UP) is the part where the shoe opening 31 is formed, and therefore the specific area in the shaped surface S becomes the part corresponding to the shoe opening 31. Specifically, the recess 109 is provided on each of the plurality of ankle components 104.

[0150] Therefore, when configured in the manner described above, the recessed portion 109 can also be used as a mark during the forming of the upper 30. Thus, during the forming of the upper 30, the position of the upper 30 can be easily aligned, which not only improves the finished effect of the manufactured shoe 1, but also greatly improves its productivity.

[0151] (Implementation Method 8)

[0152] Figure 24 This is a perspective view of the shoe last according to embodiment 8. Hereinafter, refer to the... Figure 24The shoe last 100G of this embodiment will be described. Furthermore, the shoe last 100G of this embodiment is manufactured according to the shoe last model generation method described above, and basically corresponds to the shape of the wearer's foot.

[0153] like Figure 24 As shown, the shoe last 100G is similar to the shoe last 100A of Embodiment 1 in that it is constructed by combining multiple components, but its structure differs in that the multiple components include block-shaped components in addition to multiple plate-shaped components. More specifically, the multiple components include a base component 108 as a block-shaped component and multiple toe components 102, multiple instep components 103, multiple heel circumferential components 105, and multiple heel vertical components 106 as plate-shaped components. Furthermore, the base component 108 is divided into two parts: a front base component 130 and a rear base component 140.

[0154] The front base component 130 includes a portion corresponding to the front end of the wearer's toes, namely the front toe portion 134; a portion corresponding to the back end of the wearer's toes and the instep, namely the front foot sole portion 135; and a portion corresponding to the front end of the wearer's ankle, namely the front ankle portion 136. On the other hand, the rear base component 140 includes a portion corresponding to the back end of the wearer's ankle, namely the rear ankle portion 141.

[0155] The base component 108, including the front base component 130 and the rear base component 140, serves as the base frame for assembling the plurality of plate-shaped components, defining the bottom surface of the shoe last 100G. More specifically, a plurality of toe components 102 and a plurality of instep components 103 are assembled on the front base component 130, and a plurality of heel circumferential components 105 and a plurality of heel vertical components 106 are assembled on the rear base component 140. The front base component 130 and the rear base component 140 may contain, for example, resin, metal, wood, etc., preferably hard resin.

[0156] On the other hand, the structures of the multiple toe components 102, multiple instep components 103, multiple heel circumferential components 105, and multiple heel vertical components 106 are substantially the same as those in the shoe last 100A of Embodiment 1, and they each contain a wooden board. Here, the multiple toe components 102 and multiple instep components 103 are arranged in multiple layers along the front-back direction (i.e., the foot length direction), the multiple heel circumferential components 105 are arranged in multiple layers along the vertical direction (i.e., the direction orthogonal to both the foot length direction and the foot width direction), and the multiple heel vertical components 106 are arranged radially and in multiple layers within a range of approximately 180°, centered on an axis extending along the vertical direction.

[0157] These basic components 108, multiple toe components 102, multiple instep components 103, multiple heel circumferential components 105, and multiple heel vertical components 106, in their combined state, define the forming surface S of the shoe last 100G. More specifically, in the basic component 108, the forming surface S of the shoe last 100G is defined by its outer surface, and in the multiple toe components 102, multiple instep components 103, multiple heel circumferential components 105, and multiple heel vertical components 106, the forming surface S of the shoe last 100G is defined by their respective end faces (i.e., the surfaces extending along the thickness direction of the plate-like components).

[0158] Here, the forming surface S defined by the base component 108 is the part of the overall outer surface of the foot whose shape is not easily varied by each wearer. On the other hand, the forming surface S defined by the multiple toe components 102, multiple instep components 103, multiple heel circumferential components 105, and multiple heel vertical components 106 is the part of the overall outer surface of the foot whose shape is easily varied by each wearer.

[0159] Therefore, as described above, by using a combination of a base component 108 as a block component and multiple toe components 102, multiple instep components 103, multiple heel circumferential components 105 and multiple heel vertical components 106 as plate components to form a shoe last 100G, and by preparing the base component 108 in advance according to the size of each shoe to be manufactured, shoe lasts can be manufactured more efficiently.

[0160] Here, in the shoe last 100G of this embodiment, recesses 109 and 108a are provided at predetermined positions in the shoe last 100G. The recesses 109 and 108a are located in specific areas of the forming surface S corresponding to the upper end portion of the upper 30 of the manufactured shoe 1 to be formed. Furthermore, in this embodiment, the upper end portion of the manufactured shoe 1 ( Figure 1 and Figure 2 The part represented by the symbol UP is the part where the shoe opening 31 is formed, so the specific area in the forming surface S becomes the part corresponding to the shoe opening 31. Specifically, the recessed portion 109 is provided on a plurality of ankle parts 104, a plurality of heel circumferential parts 105 and a plurality of heel vertical parts 106, and the recessed portion 108a is provided on the front ankle portion 136 of the front base part 130 and the rear ankle portion 141 of the rear base part 140.

[0161] Therefore, when configured in the manner described above, the recessed portions 109 and 108a can also be used as marks during the forming of the upper 30. Thus, during the forming of the upper 30, the position of the upper 30 can be easily aligned, which not only improves the finished effect of the manufactured shoe 1, but also greatly improves its productivity.

[0162] Furthermore, in the shoe last 100G of this embodiment, a locking recess 136a is provided on the front ankle portion 136 of the front base member 130, reaching its upper surface and rear end surface, and a locking protrusion 141c is provided on the front end surface of the rear ankle portion 141 of the rear base member 140. These locking recesses 136a and locking protrusions 141c are configured to fit together in a vertical direction (i.e., a direction orthogonal to both the length and width directions of the foot).

[0163] Thus, the rear base component 140 can be inserted and removed in the vertical direction relative to the front base component 130. After the upper 30 is formed, the rear base component 140 is separated from the front base component 130 at the aforementioned portion, thereby allowing these components to be easily removed from the shoe opening 31 of the upper 30 in the order of rear base component 140 and front base component 130.

[0164] (Summary of the disclosures in the implementation methods, etc.)

[0165] The characteristic structures disclosed in the embodiments and their variations are summarized below.

[0166] A shoe last according to one embodiment of this disclosure is used for shoe upper forming, which is constructed by combining multiple components and can be formed by overlaying the shoe upper. At least a portion of a specific region corresponding to the upper portion to be formed in the forming surface for forming the shoe upper includes multiple plate-like components included in the multiple components. The specific region including the portion of the multiple plate-like components is defined by the multiple plate-like components being arranged such that they are spaced apart from each other circumferentially along the upper portion of the shoe upper, and the specific region is defined by each end face of the multiple plate-like components. In the shoe last of one embodiment of this disclosure, a recessed portion serving as a mark for positioning with the shoe last when overlaying the shoe upper is provided in the specific region including the portion of the multiple plate-like components.

[0167] In a shoe last according to one embodiment of the present disclosure, preferably, each of the plurality of plate-shaped components may include a clamping portion, which is able to clamp and hold the shoe upper by inserting it. In this case, the clamping portion is formed by the portion of the recess defined by each of the plurality of plate-shaped components at its respective end.

[0168] In a shoe last of one embodiment of the present disclosure, the plurality of plate-shaped components may each comprise a wooden board.

[0169] Other embodiments of the shoe upper forming tool of this disclosure include: a shoe last according to one embodiment of the present disclosure; and a strip-shaped fixing member for fixing the shoe upper to the shoe last. In the other embodiments of the shoe upper forming tool of the present disclosure, the recess has a shape and size capable of receiving at least a portion of the fixing member, so as to clamp and hold the shoe upper between the shoe upper and the fixing member.

[0170] The shoe upper forming tool of further embodiments of this disclosure includes: a shoe last of one embodiment of the disclosure; and a strip-shaped fixing member for fixing the shoe upper to the shoe last. In the shoe upper forming tool of further embodiments of this disclosure, the recess has a shape and size capable of holding the fixing member received in the recess.

[0171] In the shoe upper forming tool of other embodiments of the present disclosure and in further embodiments of the shoe upper forming tool of the present disclosure, the plurality of plate-shaped components may each comprise a wooden board.

[0172] Furthermore, the shoe lasts described in these embodiments can all be used as shoe trees after the upper has been shaped. In this case, the shaped surface of the shoe last functions as a retaining surface to maintain the shape of the shoe.

[0173] (Other embodiments, etc.)

[0174] In the described embodiment, image data is obtained by photographing the wearer's feet, and a wearer-specific shoe last model is generated based on this data. Multiple plate-shaped components are then manufactured based on this model. The application of the present invention to shoe lasts manufactured through this process has been illustrated, but the application of the present invention is not limited to such shoe lasts. It can also be applied to shoe lasts manufactured through different processes. For example, the present invention can also be applied to shoe lasts manufactured using conventionally known methods, rather than wearer-specific shoe lasts.

[0175] Furthermore, in the described embodiment, an example of a shoe manufactured using the last applied to this invention is one made with an upper forming material having heat shrinkability. However, the shoe manufactured using the last applied to this invention is not limited to this type of shoe and can be any type of shoe. That is, the last applied to this invention can be used when manufacturing any shoe with a conventionally known structure.

[0176] Furthermore, the arrangement of components in the shoe last disclosed in the embodiments (i.e., the location of each component (including plate-shaped components and block-shaped components) in the shoe last) can of course be varied. That is, the number or size of each component, its arrangement position, and the method of combining each component in the shoe last disclosed in the embodiments and their variations are ultimately just examples.

[0177] Furthermore, the shape, size, or number of the recesses disclosed in the embodiments can also be appropriately changed.

[0178] Furthermore, the characteristic structures disclosed in the embodiments can be combined with each other without departing from the spirit of the invention.

[0179] Embodiments of the present invention have been described, but it should be considered that the embodiments disclosed herein are illustrative in all respects and not intended to be limiting. The scope of the invention is defined by the scope of the claims and is intended to include all modifications within the scope and meaning equivalent to the scope of the claims.

Claims

1. A shoe last used for shaping shoe uppers, and constructed by assembling multiple components, which can be shaped by overlaying the shoe upper. At least a portion of a specific region in the forming surface used to form the shoe upper, corresponding to the upper end of the part to be formed of the shoe upper, includes multiple plate-shaped components included in the plurality of components. By arranging the plurality of plate-like components circumferentially spaced apart from each other along the upper end of the shoe upper, the specific region comprising the portion of the plurality of plate-like components is defined by the end faces of each of the plurality of plate-like components. The recessed portion, which serves as a marker for alignment with the shoe last during the overlay of the shoe upper, is provided in the specific area including the plurality of plate-shaped component portions. The recessed portion is arranged in a ring shape.

2. The shoe last according to claim 1, wherein each of the plurality of plate-shaped components includes a clamping portion, the clamping portion being able to clamp and hold the shoe upper by inserting it. The clamping portion is formed by the recesses formed at the ends of the plurality of plate-shaped members.

3. The shoe last according to claim 1, wherein the plurality of plate-shaped components each comprise a wooden board.

4. A shoe upper forming tool, comprising: The shoe last as described in claim 1; and A strip-shaped fixing member is used to secure the shoe upper to the shoe last. The recess has a shape and size capable of accommodating at least a portion of the fixing member, so as to be able to clamp and hold the shoe upper between itself and the fixing member.

5. A shoe upper forming tool, comprising: The shoe last as described in claim 1; and A strip-shaped fixing member is used to secure the shoe upper to the shoe last. The recessed portion has a shape and size capable of holding the fixing member housed within the recessed portion.

6. The shoe upper forming tool according to claim 4 or 5, wherein the plurality of plate-shaped components each comprise a wooden board.

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