Preparation method for foamed shoe body, and foamed shoe body

Abstract

A preparation method for a foamed shoe body, comprising the following steps: providing a first unfoamed shoe material rough blank and a second unfoamed shoe material rough blank, wherein one of the first shoe material rough blank and the second shoe material rough blank is provided with a preformed initial open hole slot; putting the first shoe material rough blank and the second shoe material rough blank into a foaming mold, and correspondingly fitting a fixing member into the initial open hole slot, such that the first shoe material rough blank, the second shoe material rough blank and the fixing member are combined together in a mold chamber of the foaming mold, and the first shoe material rough blank and the second shoe material rough blank are foamed separately and thermally fused together to generate a foamed shoe body; forming in the foamed shoe body a mature open hole slot corresponding to the initial open hole slot, and detaching the fixing member from the foamed shoe body through the mature open hole slot, such that an opening is formed on one side of the foamed shoe body and is in communication with the mature open hole slot. In addition, a foamed shoe body structure in another embodiment is disclosed.

Description

Method for preparing foamed shoe body and foamed shoe body thereof Technical Field

[0001] The present invention relates to shoe material processing technology, and in particular to a method for preparing a foamed shoe body and the foamed shoe body. Background Art

[0002] With the development of the shoemaking industry, relevant industries have gradually paid attention to the processing efficiency of foam shoes and the comfort and durability of shoe body design. However, there are still some deficiencies in the structural design of foam shoes.

[0003] For example, the currently common airbag sole is a shoe with an airbag sealed inside. The process is summarized as follows: first, an upper shoe cover blank and a lower sole blank are prefabricated, wherein an air chamber is formed on the lower sole blank, and then an airbag is installed in the air chamber of the lower sole blank. Then, the upper shoe cover blank is covered with the air chamber of the lower sole blank and foamed to form the airbag sole.

[0004] However, the disadvantage of existing airbag soles is that the airbag is enclosed in the internal space of the sole, making it impossible to replace the airbag at will after the sole is foamed and formed. In addition, during the foaming process, the upper shoe cover blank and the lower sole blank are heated and foamed to expand, thereby expanding the volume of the air chamber space of the lower sole blank, resulting in the airbag being unable to fill the internal space of the foamed sole accordingly, affecting the sports cushioning performance of the airbag sole.

[0005] In addition, many common sole structures currently have partial defects. For example, slippers with removable uppers are usually provided with lugs on both sides of the sole, so that the two end connecting parts of the upper can be respectively passed through the lugs of the sole for fixation. However, the lugs of the sole are exposed on the side surface. In addition to increasing the packaging volume of the sole, the two end connecting parts of the upper are easily damaged by the lugs of the sole when the upper is pulled by external forces, resulting in damage to the lugs of the sole and making the slippers unwearable.

[0006] Furthermore, some foam sports soles feature openings on their lateral surfaces to accommodate cushioning components for enhanced walking comfort. However, this process involves first obtaining two separate pieces of foam material with pre-set openings. These two pieces are then subjected to a secondary process by gluing them together to create the openings. This method increases labor costs and can even reduce structural stability and pollute the process environment by gluing the foam soles together. Alternatively, the openings can be achieved through subsequent laser processing, but this not only reduces process efficiency but also incurs additional equipment costs.

[0007] Summary of the Invention

[0008] In view of this, the object of the present invention is to provide a method for preparing a foamed shoe body and the foamed shoe body thereof, wherein at least one of a first shoe material rough blank and a second shoe material rough blank is pre-formed with initial open holes and grooves, and then the first shoe material rough blank, the second shoe material rough blank and the fixing parts are foamed to obtain a foamed shoe body with mature open holes and grooves. This method greatly improves the process efficiency, improves the structural stability of the foamed shoe body, saves subsequent additional opening processing procedures, and the mature open hole and groove design of the foamed shoe body not only provides cushioning performance, but also can open corresponding external auxiliary accessories, thereby improving the application diversity and durability of the foamed shoe body.

[0009] In order to achieve the above-mentioned object, the present invention provides a method for preparing a foamed shoe body, comprising the following steps: step S1, providing at least a first shoe material rough blank and a second shoe material rough blank that are not foamed, wherein one of the first shoe material rough blank and the second shoe material rough blank is pre-shaped to have an initial open hole groove; step S2, placing the first shoe material rough blank and the second shoe material rough blank into a foaming mold, and filling a fixing piece into the initial open hole groove correspondingly, so that the first shoe material rough blank, the second shoe material rough blank and the fixing piece are formed together. The first shoe material rough blank and the second shoe material rough blank are respectively foamed and thermally fused into one body by the combination in the mold chamber of the foaming mold. When the foaming mold starts the foaming process, a foamed shoe body is generated. And in step S3, the foamed shoe body is taken out from the foaming mold for shaping. The foamed shoe body is formed with a mature open hole groove corresponding to the initial open hole groove, and the fixing part is detached from the mature open hole groove to the foamed shoe body so that the foamed shoe body is formed with at least one side opening connected to the mature open hole groove.

[0010] In one embodiment, in step S1, one side of the first shoe material rough blank is pre-depressed with the initial open hole groove, the initial open hole groove has a side opening open to a side edge of the first shoe material rough blank, and one side of the second shoe material rough blank has a bonding plane.

[0011] In one embodiment, before step S1, step P1 is further included, providing a first rough mold and a second rough mold, wherein a shaping convex plate is combined in the mold cavity of the first rough mold, the first rough mold defines a long axis direction, the shaping convex plate is connected to the side wall of the mold cavity along the long axis direction, the mold cavity bottom of the second rough mold is a flat bottom surface, and the first rough mold and the second rough mold are respectively filled with a rubber-plastic foam material, thereby obtaining the first shoe material rough mold, and the first shoe material rough mold forms the initial open hole groove contour corresponding to the shaping convex plate, and the second rough mold obtains the second shoe material rough mold.

[0012] In one embodiment, in step S2, the first shoe material rough blank is first filled in a lower mold cavity of the foaming mold, and the initial open hole groove of the first shoe material rough blank is opened in the lower mold cavity, and a fixed template of the fixing part is correspondingly filled in the initial open hole groove, and the second shoe material rough blank is fixed to a foaming inner core of the foaming mold. When the lower mold cavity of the foaming mold and the foaming inner core are clamped, the second shoe material rough blank is flatly attached to the first shoe material rough blank with the bonding plane, and the fixed template is pressed by the bonding plane and positioned in the initial open hole groove.

[0013] In one embodiment, when the first shoe material rough blank and the second shoe material rough blank are foamed, the first shoe material rough blank contacts the bonding plane of the second shoe material rough blank to form a hot melt bond to form the foamed shoe body, and the initial open hole groove of the first shoe material rough blank is enlarged relative to the fixed template to form the mature open hole groove.

[0014] In one embodiment, in step S3, when the foamed shoe body is taken out from the foaming mold, the fixed template is pulled out from the mature open hole groove of the foamed shoe body, so that the mature open hole groove forms a groove on one side, and the side opening of the mature open hole groove is opened toward one side edge of the foamed shoe body.

[0015] In one embodiment, in step S1, the first shoe material rough blank and the second shoe material rough blank are both pre-formed with the initial open hole groove, the initial open hole groove is recessed into a first groove on one side of the first shoe material rough blank, and the initial open hole groove is recessed into a second groove on one side of the second shoe material rough blank, wherein the first groove has two first side openings open to the two side edges of the first shoe material rough blank, and the second groove has two second side openings open to the two side edges of the second shoe material rough blank, and the first groove of the first shoe material rough blank and the second groove of the second shoe material rough blank are formed accordingly.

[0016] In one embodiment, before step S1, step P1 is further included, providing a first rough mold and a second rough mold, wherein a first shaping convex plate is combined in the mold cavity of the first rough mold, the mold cavity of the first rough mold defines a first short axis direction, the first shaping convex plate is connected to the two side walls of the mold cavity of the first rough mold along the first short axis direction, a second shaping convex plate is combined in the mold cavity of the second rough mold and corresponds to the contour of the first shaping convex plate, the mold cavity of the second rough mold defines a second short axis direction, the second shaping convex plate is connected to the two side walls of the mold cavity of the second rough mold along the second short axis direction, and then the first rough mold and the second rough mold are respectively filled with a rubber-plastic foam material, so that the first rough mold obtains the first shoe material rough, and the first shoe material rough forms the first groove contour corresponding to the first shaping convex plate, and the second rough mold obtains the second shoe material rough, and the second shoe material rough forms the second groove contour corresponding to the second shaping convex plate.

[0017] In one embodiment, in step S2, the second shoe material rough blank is filled in a lower mold cavity of the foaming mold, and the second groove is opened in the lower mold cavity, and a fixed template of the fixing part is filled in the second groove, and the fixed template is partially exposed in the second groove. The first shoe material rough blank is filled in an upper mold cavity of the foaming mold, and the first groove is open in the upper mold cavity and faces the second groove. When the lower mold cavity and the upper mold cavity of the foaming mold are closed, the first shoe material rough blank is overlapped on the second shoe material rough blank, and the fixed template partially exposed in the second groove is placed in the first groove, so that the fixed template is fixed between the first groove and the second groove, and the volume of the fixed template is approximately equal to the combined volume of the first groove and the second groove.

[0018] In one embodiment, when the first shoe material rough blank and the second shoe material rough blank are foamed, the contact parts of the first shoe material rough blank and the second shoe material rough blank are hot-melt-bonded to form the foamed shoe body, and the first groove and the second groove are enlarged relative to the fixed template to form the mature open hole groove.

[0019] In one embodiment, in step S3, when the foamed shoe body is taken out from the foaming mold, the fixed template is pulled out from the mature open hole groove of the foamed shoe body, so that the mature open hole groove forms a flat groove, and the flat groove has openings on both sides that are open on both sides of the side surface of the foamed shoe body.

[0020] In one embodiment, in step S1, the first shoe material rough blank and the second shoe material rough blank are both pre-formed with the initial open hole groove, and the initial open hole groove is recessed at intervals on a side surface of the first shoe material rough blank to form a plurality of first arc grooves, and the plurality of first arc grooves respectively have two first side openings open to the two side edges of the first shoe material rough blank, and the initial open hole groove is recessed at intervals on a side surface of the second shoe material rough blank to form a second arc groove, and the plurality of second arc grooves respectively have two second side openings open to the two side edges of the second shoe material rough blank.

[0021] In one embodiment, before step S1, step P1 is further included, providing a first rough mold and a second rough mold, wherein a plurality of first shaping protrusions are combined in the mold cavity of the first rough mold, the mold cavity of the first rough mold defines a first short axis direction, the plurality of first shaping protrusions are arranged at intervals and connect the two side walls of the mold cavity of the first rough mold along the first short axis direction, and a plurality of second shaping protrusions are combined in the mold cavity of the second rough mold, the mold cavity of the second rough mold defines a second short axis direction, the plurality of second shaping protrusions are arranged at intervals and connect the two side walls of the mold cavity of the second rough mold along the second short axis direction, and then the first rough mold and the second rough mold are respectively filled with a rubber-plastic foam material, so that the first rough mold obtains the first shoe material rough, and the first shoe material rough forms the plurality of first arc groove profiles corresponding to the plurality of first shaping protrusions, and the second rough mold obtains the second shoe material rough, and the second rough mold forms the plurality of second arc groove profiles corresponding to the plurality of second shaping protrusions.

[0022] In one embodiment, the rubber-plastic foam material is a foam material including ethylene-vinyl acetate copolymer (EVA), synthetic rubber (Synthetic Rubber) and thermoplastic elastomer (TPE).

[0023] In one embodiment, in step S2, the second shoe material blank is filled in a lower mold cavity of the foaming mold, and the plurality of second arc grooves of the second shoe material blank are opened in the lower mold cavity, and the fixing member is installed in the lower mold cavity and located on both sides of the second shoe material blank by a pair of fixing modules, wherein the inner sides of the pair of fixing modules respectively have a plurality of convex rods, and the pair of fixing modules are filled in the plurality of second arc grooves by the convex rods, wherein the convex rods of the pair of fixing modules are detachably connected to each other, and each convex rod protrudes from each second arc groove. The first shoe material rough blank is correspondingly filled in an upper mold cavity of the foaming mold, and the multiple first arc grooves are correspondingly facing the multiple second arc grooves and open in the upper mold cavity. When the lower mold cavity and the upper mold cavity of the foaming mold are closed, the first shoe material rough blank is overlapped on the second shoe material rough blank, and the convex rods partially protruding from the second arc grooves are correspondingly accommodated in the first arc grooves, so that the convex rods are respectively fixed between the first arc grooves and the second arc grooves, and the volume of each convex rod is approximately equal to the combined volume of the first arc grooves and the second arc grooves.

[0024] In one embodiment, when the first shoe material rough blank and the second shoe material rough blank are foamed, the contact parts of the first shoe material rough blank and the second shoe material rough blank are hot-melt-bonded to form the foamed shoe body, and the multiple first arc grooves and the multiple second arc grooves are enlarged relative to the protruding rod to form a multiple mature open hole grooves.

[0025] In one embodiment, in step S3, when the foamed shoe body is taken out from the foaming mold, the mating relationship between the protruding rods of the pair of fixing modules is released, and the pair of fixing modules are detached from the foamed shoe body, so that the multiple mature open hole grooves form a plurality of circular grooves arranged at intervals, and the multiple circular grooves respectively have openings on both sides that are open on both sides of the side surface of the foamed shoe body.

[0026] Another embodiment of the present invention provides a foamed shoe body, which is made using the aforementioned method, wherein the foamed shoe body includes a sports shoe outsole or a slipper sole, and the foamed shoe body includes: a sole having a side circumference and at least one mature open hole groove, the side circumference surrounds the sole, the mature open hole groove runs through the side circumference on both sides of the sole, and the mature open hole groove has openings on both sides that are open on the side circumference.

[0027] In one embodiment, the mature open-hole groove includes a flat groove located in a sole area of ​​the sole for allowing a shoe upper to penetrate and be fixed on the sole.

[0028] In one embodiment, the mature open-hole groove may include a plurality of circular grooves, the sole has a sole area, a heel area and an arch area, the sole area and the heel area are respectively located on both sides of the arch area, and the plurality of circular grooves are spaced apart and distributed in the sole area, the heel area and the arch area.

[0029] Another embodiment of the present invention provides a foam shoe body, which is made using the above-mentioned method, wherein the foam shoe body includes a fin, the foam shoe body includes a shoe cover and a shoe plate cover; the shoe cover includes a sole area and an arch area, the sole area is connected to the arch area, and the shoe cover defines an axial direction passing through the sole area and the arch area; the shoe plate cover is combined with the bottom side of the shoe cover, the shoe plate cover is combined with the arch area of ​​the shoe cover and is arranged along the axial direction toward the sole area, and the shoe plate cover has a mature open hole groove, and the mature open hole groove has a side opening that is open to the sole area.

[0030] The effect of the present invention is that, since at least one of the first shoe material rough blank and the second shoe material rough blank is pre-formed with an initial open hole groove, during the foaming process of the first shoe material rough blank and the second shoe material rough blank, the fixing parts are correspondingly filled in the initial open hole groove, and the first shoe material rough blank, the second shoe material rough blank and the fixing parts are combined together in the mold chamber of the foaming mold, wherein the first shoe material rough blank and the second shoe material rough blank are uniformly foamed and thermally fused into one in the foaming mold, and the fixing parts can prevent the initial open hole groove from foaming and deformation. In this way, the foamed shoe body can be obtained by foaming in one time, which greatly improves the process efficiency and enhances the structural stability of the foamed shoe body. The foamed shoe body is formed with the mature open hole groove, which saves the subsequent additional opening processing procedures, and the mature open hole groove design of the foamed shoe body can not only serve as a buffering effect, but also can open corresponding external auxiliary accessories, thereby improving the application diversity and durability of the foamed shoe body.

[0031] For example, when the foam shoe body is a sports shoe outsole or a slipper sole, the mature open hole groove design of the foam shoe body can directly install support performance accessories to enhance the functionality of the sole of the foam shoe body, or the mature open hole groove design of the foam shoe body can be used to penetrate a shoe upper to be fixed on the sole, so that the foam shoe body forms a slipper shape; when the foam shoe body is a fin, the mature open hole groove design of the foam shoe body can correspondingly open the function of the external fin plate, and the user can also arbitrarily remove the fin plate from the mature open hole groove, thereby improving the convenience of external accessories of the foam shoe body. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] FIG1 is a flow chart showing the steps of a method for preparing a foamed shoe body according to a preferred embodiment of the present invention.

[0033] FIG2 is a detailed flow chart of a method for preparing a foamed shoe body according to a first preferred embodiment of the present invention.

[0034] FIG3 is a structural diagram of the first shoe material rough blank in the method for preparing a foamed shoe body according to the first preferred embodiment of the present invention.

[0035] FIG4 is a structural diagram of a first rough mold in the method for preparing a foamed shoe body according to the first preferred embodiment of the present invention.

[0036] FIG5 is a structural diagram of the second shoe material rough blank in the method for preparing a foamed shoe body according to the first preferred embodiment of the present invention.

[0037] FIG6 is a structural diagram of a second rough mold in the method for preparing a foamed shoe body according to the first preferred embodiment of the present invention.

[0038] 7 is a cross-sectional view showing a method for preparing a foamed shoe body according to a first preferred embodiment of the present invention, wherein a first shoe material rough blank, a second shoe material rough blank, and a fixing member are assembled together in a foaming mold.

[0039] FIG8 is a partially enlarged view of FIG7 .

[0040] FIG9 is a perspective view of a foamed shoe body according to a first preferred embodiment of the present invention.

[0041] FIG10 is a partial cross-sectional view of the foamed shoe body according to the first preferred embodiment of the present invention.

[0042] FIG11 is a detailed flow chart of a method for preparing a foamed shoe body according to a second preferred embodiment of the present invention.

[0043] FIG12 is a structural diagram of the first shoe material rough blank in the method for preparing a foamed shoe body according to the second preferred embodiment of the present invention.

[0044] FIG13 is a structural diagram of the first rough mold in the method for preparing a foamed shoe body according to the second preferred embodiment of the present invention.

[0045] FIG14 is a structural diagram of the second shoe material rough blank in the method for preparing a foamed shoe body according to the second preferred embodiment of the present invention.

[0046] FIG15 is a structural diagram of a second rough mold in the method for preparing a foamed shoe body according to the second preferred embodiment of the present invention.

[0047] 16 is a cross-sectional view showing a method for preparing a foamed shoe body according to a second preferred embodiment of the present invention, wherein a first shoe material rough blank, a second shoe material rough blank, and a fixing member are combined in a foaming mold.

[0048] FIG17 is a perspective view of a foamed shoe body according to a second preferred embodiment of the present invention.

[0049] FIG18 is a cross-sectional view of a foamed shoe body according to a second preferred embodiment of the present invention.

[0050] FIG19 is a detailed flow chart of a method for preparing a foamed shoe body according to a third preferred embodiment of the present invention.

[0051] FIG20 is a structural diagram of the first shoe material rough blank in the method for preparing a foamed shoe body according to the third preferred embodiment of the present invention.

[0052] FIG21 is a structural diagram of the first rough mold in the method for preparing a foamed shoe body according to the third preferred embodiment of the present invention.

[0053] FIG22 is a structural diagram of the second shoe material rough blank in the method for preparing a foamed shoe body according to the third preferred embodiment of the present invention.

[0054] FIG23 is a structural diagram of the second rough mold in the method for preparing a foamed shoe body according to the third preferred embodiment of the present invention.

[0055] 24 is a schematic structural diagram of a method for preparing a foamed shoe body according to a third preferred embodiment of the present invention, in which a first shoe material rough blank, a second shoe material rough blank, and a fixing member are combined in a foaming mold.

[0056] 25 is a cross-sectional view showing a method for preparing a foamed shoe body according to a third preferred embodiment of the present invention, in which a first shoe material rough blank, a second shoe material rough blank, and a fixing member are combined together inside a foaming mold.

[0057] FIG26 is a three-dimensional view of a foamed shoe body according to a third preferred embodiment of the present invention.

[0058] FIG27 is a cross-sectional view of a foamed shoe body according to a third preferred embodiment of the present invention.

[0059] Explanation of the reference numerals: 10: First shoe material rough blank 20: Second shoe material rough blank 21: Joining plane 30: Initial open hole groove 31: Side opening 40: Fixing part 41: Fixed template 50: Foamed shoe body 50A: Shoe foot cover 501A: Sole area 502A: Arch area 50B: Shoe plate cover 51: Mature open hole groove 511: Side slot 52: Side opening 60, 60': First shoe material rough blank 70, 70': Second shoe material rough blank 80, 80': Initial open hole groove 81: First groove 81': First arc groove 811, 811': First side opening 82: Second groove 82': Second arc groove 821, 821': Second side opening 90, 90': Fixing part 91: Fixed template 91': Fixed module 92': Protruding rod 100: First rough mold 101: Mold cavity 110: Shaping convex plate 200: Second rough mold 201: Mold cavity 210: Mold inner core 300: Foaming mold 301: Lower mold cavity 310: Foaming inner core 400, 400': First rough mold 401, 401': Mold cavity 410: First shaping convex plate 410': First shaping convex rod 500, 500': Second rough mold 501, 501': Mold cavity 510: Second shaping convex plate 510': Second shaping convex rod 600, 600': Foaming mold 601, 601': Lower mold cavity 602, 602': Upper mold cavity 610': Positioning groove 700 700': Foamed shoe body 700A, 700A': Sole 710, 710': Mature open hole groove 711: Flat groove 711': Round groove 712, 712': Side opening 720, 720': Side circumference 730, 730': Sole area 740': Arch area 750': Heel area L: Long axis direction T: Axial direction D1, D1': First short axis direction D2, D2': Second short axis direction P1, S1~S3: Steps DETAILED DESCRIPTION

[0060] In order to more clearly illustrate the present invention, preferred embodiments are given and described in detail with reference to the accompanying drawings. Referring to Figures 1 and 2, a method for preparing a foamed shoe body according to a first preferred embodiment of the present invention is provided, comprising the following steps:

[0061] In step S1, at least a first unfoamed shoe material rough blank 10 and a second unfoamed shoe material rough blank 20 are provided, wherein one of the first shoe material rough blank 10 and the second shoe material rough blank 20 is pre-formed with an initial open hole groove 30; in the first embodiment, as shown in FIG3 and FIG5 , the initial open hole groove 30 is pre-depressed on one side of the first shoe material rough blank 10, and the initial open hole groove 30 has a side opening 31 open to a side edge of the first shoe material rough blank 10, and a side surface 21 is provided on one side of the second shoe material rough blank 20, wherein the first shoe material rough blank 10 is a fin plate cover rough blank, and the second shoe material rough blank 20 is a fin foot cover rough blank.

[0062] Before the step S1, the process further includes a step P1, referring to FIG2, FIG4 and FIG6, providing a first rough blank mold 100 and a second rough blank mold 200, wherein a shaping convex plate 110 is combined in the mold cavity 101 of the first rough blank mold 100, and the mold cavity 101 of the first rough blank mold 100 is defined with a long axis direction L. As shown in FIG4, the shaping convex plate 110 protrudes from the bottom of the mold cavity 101 of the first rough blank mold 100 and connects one side wall of the mold cavity 101 along the long axis direction L. Then, the first rough blank mold 100 and the second rough blank mold 200 are formed. 00 are respectively filled with a rubber-plastic foam material, the rubber-plastic foam material fills the mold cavity 101 of the first rough mold 100 and covers the shaping convex plate 110, so as to be cured to obtain the first shoe material rough mold 10 (see Figure 3); as shown in Figure 6, a mold inner core 210 is preset in the mold cavity 201 of the second rough mold 200, and the bottom of the mold cavity 210 of the second rough mold 200 is a flat bottom surface, and the rubber-plastic foam material fills the mold cavity 201 of the second rough mold 200 and covers the mold inner core 210, so as to be cured to obtain the second shoe material rough mold 20 (see Figure 5).

[0063] Next, the first shoe material rough blank 10 and the second shoe material rough blank 20 are taken out from the first rough blank mold 100 and the second rough blank mold 200 respectively, wherein the first shoe material rough blank 10 can be directly separated from the shaping convex plate 110, so that the contour of the initial open hole groove 30 formed in the first shoe material rough blank 10 corresponds to the shaping convex plate 110.

[0064] In this first embodiment, the rubber-plastic foam material is a foam material comprising one of ethylene-vinyl acetate copolymer (EVA), synthetic rubber (Synthetic Rubber) and thermoplastic elastomer (TPE), and each of the rubber-plastic foam materials is injection molded under the condition that the screw temperature is controlled to be lower than 130°C; since the foaming temperature of the rubber-plastic foam material is approximately above 140°C, no foaming reaction will occur when each of the rubber-plastic foam materials is injected under the condition that the screw temperature is controlled to be lower than 130°C, and each of the rubber-plastic foam materials controls the output of the injection pressure during the injection process, so that the injected rubber-plastic foam material can be evenly distributed in the mold cavity 101 of the first rough mold 100 and the mold cavity 201 of the second rough mold 200.

[0065] In other embodiments, step P1 can be omitted, and the first shoe material rough blank 10 and the second shoe material rough blank 20 can be integrally formed by 3D printing, or the first shoe material rough blank 10 and the second shoe material rough blank 20 can be directly obtained from the outside, as long as the first shoe material rough blank 10 and the second shoe material rough blank 20 can be provided; the shaping convex plate 110 can adjust the structural form according to the product structure requirements, for example, the shaping convex plate 110 can be replaced and preset inside the second rough blank mold 200, or the shaping convex plate 110 can be independently and detachably installed in the mold cavity 101 of the first rough blank mold 100.

[0066] Step S2, placing the first shoe material rough blank 10 and the second shoe material rough blank 20 into a foaming mold 300, and filling a fixing piece 40 into the initial open hole groove 30 accordingly, so that the first shoe material rough blank 10, the second shoe material rough blank 20 and the fixing piece 40 are combined together in the mold chamber of the foaming mold 300, when the foaming mold 300 starts the foaming process, the first shoe material rough blank 10 and the second shoe material rough blank 20 are uniformly foamed and thermally fused into one in the foaming mold 300 to generate a foamed shoe body 50; please refer to Figures 2 and 7, in the actual operation of this first embodiment, the first shoe material rough blank 10 is first filled into the lower mold cavity 301 of the foaming mold 300 accordingly, and the initial open hole groove 30 of the first shoe material rough blank 10 is opened in the lower mold cavity 301, and a fixed template 41 of the fixing piece 40 is filled into the lower mold cavity 301 accordingly. It is installed in the initial open hole groove 30 of the first shoe material rough blank 10, and the fixed template 41 does not expose the initial open hole groove 30. The second shoe material rough blank 20 is fixed on a foaming inner core 310 of the foaming mold 300. As shown in Figure 8, when the lower mold cavity 301 of the foaming mold 300 and the foaming inner core 310 are molded together, the second shoe material rough blank 20 is flatly attached to the first shoe material rough blank 10 with the bonding plane 21, and the fixed template 41 is pressed by the bonding plane 21 and positioned in the initial open hole groove 30. In this way, the first shoe material rough blank 10, the second shoe material rough blank 20 and the fixing member 40 are combined together in the mold chamber of the foaming mold 300, wherein the fixing member 40 is not made of foaming material, so the configuration and material properties of the fixing member 40 will not be affected by the foaming conditions of the foaming mold 300.

[0067] In this embodiment, the ratio of the sum of the volumes of the first shoe material rough blank 10, the second shoe material rough blank 20 and the fixing member 40 to the mold chamber volume of the foaming mold 300 is between 0.96 and 1.04. In a preferred embodiment, the ratio of the sum of the volumes of the first shoe material rough blank 10, the second shoe material rough blank 20 and the fixing member 40 to the mold chamber volume of the foaming mold 300 is between 1 and 1.02. The present invention utilizes the sum of the volumes of the first shoe material rough blank 10, the second shoe material rough blank 20 and the fixing member 40 and the mold chamber volume of the foaming mold 300 to design The first shoe material rough blank 10 and the second shoe material rough blank 20 can accurately feed the foaming mold 300. When the first shoe material rough blank 10 and the second shoe material rough blank 20 are foamed, the first shoe material rough blank 10 and the second shoe material rough blank 20 can be heated and foamed evenly in the foaming mold 300, and the first shoe material rough blank 10 contacts the bonding plane 21 of the second shoe material rough blank 20 to form a hot melt bond to form the foamed shoe body 50. At the same time, the initial open hole groove 30 of the first shoe material rough blank 10 is enlarged relative to the fixed template 41 to form a mature open hole groove 51.

[0068] In step S3, the foamed shoe body 50 is taken out of the foaming mold 300 and shaped (see Figure 9), and the fixed template 41 of the fixing part 40 is detached from the mature open hole groove 51 to the foamed shoe body 50, so that the foamed shoe body 50 is formed with at least one side opening 52 connected to the mature open hole groove 51; to be more specific, since the mature open hole groove 51 expands relative to the fixed template 41 during the foaming process, the fixed template 41 can be pulled out from the mature open hole groove 51 of the foamed shoe body 50, so that the mature open hole groove 51 forms a side groove 511, and the side opening 52 of the side groove 511 is opened toward a side edge of the foamed shoe body 50.

[0069] Please refer to Figures 9 and 10 to further illustrate the structure of the foam shoe body 50 of the first embodiment. The foam shoe body 50 is an integrally foamed fin shoe, wherein the foam shoe body 50 includes a shoe foot cover 50A and a shoe plate cover 50B. The configuration of the shoe foot cover 50A is the same as that of the second shoe material rough blank 20. The bottom side of the shoe foot cover 50A corresponds to the bonding plane 21 of the second shoe material rough blank 20. The shoe foot cover 50A includes a sole area 501A and an arch area 502A. The sole area 501A is connected to the arch area 502A, and the shoe foot cover 50A defines An axial direction T passes through the sole area 501A and the arch area 502A; the configuration of the shoe cover 50B is the same as that of the first shoe material rough blank 10. The shoe cover 50B is combined with the bottom side of the shoe cover 50A, and the shoe cover 50A and the shoe cover 50B are heat-fused into one piece. The shoe cover 50B is located in the arch area 502A of the shoe cover 50A and is arranged along the axial direction T toward the sole area 501A. The shoe cover 50B has the mature open hole groove 51, and the side opening 52 of the mature open hole groove 51 is open to the sole area 501A.

[0070] Therefore, in the first embodiment, the foamed shoe body 50 in the shape of fins is obtained by integral foaming using the aforementioned preparation method. The design of the mature open hole grooves 51 of the foamed shoe body 50 can correspondingly open the function of opening the external fin plate (not shown in the figure). The user can also arbitrarily remove the fin plate from the mature open hole grooves 51, thereby improving the convenience of externally connecting objects to the foamed shoe body 50.

[0071] 11 to 18 , which illustrate a method for preparing a foamed shoe body according to a second preferred embodiment of the present invention, comprising the following steps:

[0072] Step S1, providing a first unfoamed shoe material rough blank 60 and a second shoe material rough blank 70. In this second embodiment, the first shoe material rough blank 60 and the second shoe material rough blank 70 are both pre-formed with an initial open hole groove 80, as shown in Figures 12 and 14, the initial open hole groove 80 is recessed into a first groove 81 on the bottom side of the first shoe material rough blank 60, and the initial open hole groove 80 is recessed into a second groove 82 on the top side of the second shoe material rough blank 70, wherein the first shoe material rough blank 60 is a slipper shoe cover rough blank, the first groove 81 has two first side openings 811 open to the two side edges of the first shoe material rough blank 60, the second shoe material rough blank 70 is a slipper sole rough blank, the second groove 82 has two second side openings 821 open to the two side edges of the second shoe material rough blank 70, and the shape and contour of the first groove 81 of the first shoe material rough blank 60 are corresponding to the second groove 82 of the second shoe material rough blank 70.

[0073] Before the step S1, step P1 is also included, please refer to Figures 11, 13 and 15, providing a first rough blank mold 400 and a second rough blank mold 500, the mold cavity 401 of the first rough blank mold 400 is combined with a first shaping convex plate 410, wherein the mold cavity 401 of the first rough blank mold 400 is defined with a first short axis direction D1, the first shaping convex plate 410 protrudes from the bottom of the mold cavity 401 of the first rough blank mold 400 and connects the two side walls of the mold cavity 401 along the first short axis direction D1, as shown in Figure 15, the mold cavity 501 of the second rough blank mold 500 is combined with a second shaping convex plate 510 corresponding to the outline of the first shaping convex plate 410, and the mold cavity 501 of the second rough blank mold 500 is defined with a second short axis direction Toward D2, the second shaping convex plate 510 protrudes from the bottom of the mold cavity 501 of the second rough mold 500 and connects the two side walls of the mold cavity 501 along the second short axis direction D2, and then the first rough mold 400 and the second rough mold 500 are filled with the aforementioned rubber and plastic foam material respectively. The rubber and plastic foam material fills the mold cavity 401 of the first rough mold 400 and covers the first shaping convex plate 410, so as to be cured to obtain the first shoe material rough mold 60 (see Figure 12), and the rubber and plastic foam material fills the mold cavity 501 of the second rough mold 500 and covers the second shaping convex plate 510, so as to be cured to obtain the second shoe material rough mold 70 (see Figure 14), wherein the material selection and injection conditions of the rubber and plastic foam material are the same as those of the aforementioned first embodiment.

[0074] Then, the first shoe material rough blank 60 and the second shoe material rough blank 70 are taken out from the first rough blank mold 400 and the second rough blank mold 500 respectively, wherein the first shoe material rough blank 60 can be directly separated from the first shaping convex plate 410, and the first groove 81 formed by the first shoe material rough blank 60 has a contour corresponding to the first shaping convex plate 410, and the second shoe material rough blank 70 can be directly separated from the second shaping convex plate 510, and the second groove 82 formed by the second shoe material rough blank 70 has a contour corresponding to the second shaping convex plate 510.

[0075] In other embodiments, step P1 can be omitted, and the first shoe material rough blank 60 and the second shoe material rough blank 70 can also be integrally formed by 3D printing, or directly obtained from the outside, as long as the first shoe material rough blank 60 and the second shoe material rough blank 70 can be provided; the first shaping convex plate 410 and the second shaping convex plate 510 can adjust the structural form according to the product structure requirements. For example, the first shaping convex plate 410 and the second shaping convex plate 510 can be independently and detachably installed in the first rough blank mold 400 and the second rough blank mold 500.

[0076] Step S2, placing the first shoe material rough blank 60 and the second shoe material rough blank 70 into a foaming mold 600. In actual operation, the second shoe material rough blank 70 is filled in a lower mold cavity 601 of the foaming mold 600, and the second groove 82 is opened in the lower mold cavity 601, and a fixed template 91 of a fixing member 90 is filled in the second groove 82 of the second shoe material rough blank 70, and the fixed template 91 is partially exposed in the second groove 82, and the first shoe material rough blank 60 is filled in an upper mold cavity 602 of the foaming mold 600, and the first groove 81 of the first shoe material rough blank 60 is opened in the upper mold cavity 602 and faces the The second groove 82, as shown in Figure 16, when the lower mold cavity 601 and the upper mold cavity 602 of the foaming mold 600 are clamped, the first shoe material rough blank 60 is superimposed on the second shoe material rough blank 70, and the fixed template 91 partially protruding from the second groove 82 is correspondingly accommodated in the first groove 81, so that the fixed template 91 is fixed between the first groove 81 and the second groove 82, thereby the first shoe material rough blank 60, the second shoe material rough blank 70 and the fixing part 90 are combined together in the mold chamber of the foaming mold 600, and the volume of the fixed template 91 is approximately equal to the combined volume of the first groove 81 and the second groove 82.

[0077] When the first shoe material rough blank 60 and the second shoe material rough blank 70 are foamed, the first shoe material rough blank 60 and the second shoe material rough blank 70 can be heated and foamed evenly in the foaming mold 600, and the contact parts of the first shoe material rough blank 60 and the second shoe material rough blank 70 are hot-melt-bonded to form a foamed shoe body 700. At the same time, the first groove 81 and the second groove 82 are enlarged relative to the fixed template 91 to form a mature open hole groove 710.

[0078] In step S3, the foamed shoe body 700 is taken out of the foaming mold 600 and shaped (see FIG17 ), and the fixed template 91 is pulled out from the mature open hole groove 710 of the foamed shoe body 700 so that the mature open hole groove 710 forms a flat groove 711, and the flat groove 711 has two side openings 712 that are open on both sides of the side surface 720 of the foamed shoe body 700.

[0079] Please refer to Figures 17 and 18, which specifically illustrate the structure of the foam shoe body 700 of the second embodiment. The foam shoe body 700 is an integrally foamed slipper sole, wherein the foam shoe body 700 includes a sole 700A, and the sole 700A has the side surface 720 and the mature open hole groove 710. The side surface 720 surrounds the sole 700A, and the mature open hole groove 710 runs through the side surface 720 on both sides of the sole 700A, wherein the flat groove 711 of the mature open hole groove 710 is located in a sole area 730 of the sole 700A, so that a shoe upper (not shown in the figure) can penetrate and be fixed on the sole 700A, so that the foam shoe body 700 forms a slipper shape.

[0080] Therefore, in this second embodiment, the foamed shoe body 700 in the shape of a slipper sole is obtained through the aforementioned preparation method. The side surface 720 of the foamed shoe body 700 does not have a piercing structure, which effectively reduces the packaging volume of the foamed shoe body 700. The foamed shoe body 700 can be arbitrarily matched with various uppers (not shown in the figure) through the design of the mature open hole groove 710. The upper can be fixed on the sole 700A by directly penetrating the mature open hole groove 710, thereby improving the convenience of external objects of the foamed shoe body 700 and further enhancing the wearing durability of the foamed shoe body 700.

[0081] Referring again to FIG. 19 to FIG. 27 , there are shown a method for preparing a foamed shoe body according to a third preferred embodiment of the present invention. The method steps of the third preferred embodiment are substantially the same as those of the second preferred embodiment, and include the following steps:

[0082] Step S1, providing a first unfoamed shoe material rough blank 60' and a second shoe material rough blank 70'. In the third embodiment, the first shoe material rough blank 60' and the second shoe material rough blank 70' are both pre-formed with an initial open hole groove 80', wherein the first shoe material rough blank 60' is a sports outsole rough blank, and the second shoe material rough blank 70' is a sports outsole rough blank. As shown in Figures 20 and 22, the initial open hole groove 80' is recessed into a plurality of first arc grooves 81' at intervals on the bottom side of the first shoe material rough blank 60'. The initially open hole groove 80' is recessed at intervals on the top side of the second shoe material rough blank 70' to form a plurality of second arc grooves 82', wherein the first arc groove 81' respectively has two first side openings 811' open to the two side edges of the first shoe material rough blank 60', and the second arc groove 82' respectively has two second side openings 821' open to the two side edges of the second shoe material rough blank 70', and the first arc groove 81' of the first shoe material rough blank 60' and the second arc groove 82' of the second shoe material rough blank 70' are formed correspondingly.

[0083] Before the step S1, the method further includes step P1, providing a first rough mold 400' and a second rough mold 500', wherein a plurality of first shaping protrusions 410' are combined in the mold cavity 401' of the first rough mold 400', and the mold cavity 401' of the first rough mold 400' defines a first short axis direction D1', and the plurality of first shaping protrusions 410' are arranged at intervals and protrude from the bottom of the mold cavity 401' of the first rough mold 400', and the plurality of first shaping protrusions 410' connect the two side walls of the mold cavity 401' along the first short axis direction D1', and the mold cavity 501' of the second rough mold 500' is combined with a plurality of second shaping protrusions 510' whose contours correspond to the plurality of first shaping protrusions 410', and the mold cavity 501' of the second rough mold 500' is defined by a first short axis direction D1'. 1' defines a second short axis direction D2', the multiple second shaping protrusions 510' are arranged at intervals and protrude from the bottom of the mold cavity 501' of the second rough mold 500', and the multiple second shaping protrusions 510' connect the two side walls of the mold cavity 501' along the second short axis direction D2'. Then, the first rough mold 400' and the second rough mold 500' are respectively filled with the aforementioned rubber-plastic foaming material. The rubber-plastic foaming material fills the mold cavity 401' of the first rough mold 400' and covers the multiple first shaping protrusions 410', so as to be cured to obtain the first shoe material rough mold 60', and the rubber-plastic foaming material fills the mold cavity 501' of the second rough mold 500' and covers the multiple second shaping protrusions 510', so as to be cured to obtain the second shoe material rough mold 70'.

[0084] Next, the first shoe material rough blank 60' and the second shoe material rough blank 70' are taken out from the first rough blank mold 400' and the second rough blank mold 500' respectively, wherein the first shoe material rough blank 60' is separated from the multiple first shaping protrusions 410', and the first arc groove 81' formed by the first shoe material rough blank 60' has a contour corresponding to the multiple first shaping protrusions 410', and the second shoe material rough blank 70' is separated from the multiple second shaping protrusions 510', and the second arc groove 82' formed by the second shoe material rough blank 70' has a contour corresponding to the multiple second shaping protrusions 510'.

[0085] Step S2, placing the first shoe material rough blank 60' and the second shoe material rough blank 70' into a foaming mold 600', see Figure 24, in actual operation, the second shoe material rough blank 70' is correspondingly filled in the lower mold cavity 601' of the foaming mold 600', and the multiple second arc grooves 82' of the second shoe material rough blank 70' are open in the lower mold cavity 601', and a fixing member 90' is installed in the lower mold cavity 601' with a pair of fixing modules 91' and located on both sides of the second shoe material rough blank 70', and the inner sides of the pair of fixing modules 91' respectively have multiple protruding rods 92', and the pair of fixing modules 91' use the protruding rods 92' to fill the multiple second arc grooves 82', wherein the protruding rods 92' of the pair of fixing modules 91' are detachably connected to each other, and each The convex rod 92' protrudes from each second arc groove 82', and the docking mode of the convex rod 92' can be a buckle combination or a concave-convex combination, but is not limited to this; the first shoe material rough blank 60' is correspondingly filled in an upper mold cavity 602' of the foaming mold 600', and the multiple first arc grooves 81' of the first shoe material rough blank 60' are correspondingly facing the multiple second arc grooves 82' and open in the upper mold cavity 602'. In this embodiment, two positioning grooves 610' are provided inside the foaming mold 600' and are relatively recessed on both sides of the lower mold cavity 601'. The pair of fixing modules 91' are correspondingly detachably installed on the two positioning grooves 610'. When the pair of fixing modules 91' are installed in the two positioning grooves 610', the convex rods 92' of the pair of fixing modules 91' extend radially toward the lower mold cavity 601'.

[0086] As shown in Figure 25, when the lower mold cavity 601' and the upper mold cavity 602' of the foaming mold 600' are closed, the first shoe material rough blank 60' is overlapped on the second shoe material rough blank 70', and the protruding rods 92' partially protruding from each second arc groove 82' are correspondingly accommodated in each first arc groove 91', so that each protruding rod 92' is respectively fixed between each first arc groove 81' and each second arc groove 82', thereby the first shoe material rough blank 60', the second shoe material rough blank 70' and the fixing part 90' are combined together in the mold chamber of the foaming mold 600', and the volume of each protruding rod 92' is approximately equal to the combined volume of each first arc groove 81' and each second arc groove 82'.

[0087] When the first shoe material rough blank 60' and the second shoe material rough blank 70' are foamed, the first shoe material rough blank 60' and the second shoe material rough blank 70' can be heated and foamed uniformly in the foaming mold 600', and the contact parts of the first shoe material rough blank 60' and the second shoe material rough blank 70' are heat-melted to form a foamed shoe body 700'. At the same time, the multiple first arc grooves 81' and the multiple second arc grooves 82' are enlarged relative to the protruding rod 92' to form a multiple mature open hole grooves 710'.

[0088] In step S3, the foamed shoe body 700' is removed from the foaming mold 600' (see FIG. 26 ), the protruding rods 92' of the pair of fixing modules 91' are released from the foamed shoe body 700', and the pair of fixing modules 91' are detached from the foamed shoe body 700' so that the multiple mature open hole grooves 710' form a plurality of circular grooves 711' arranged at intervals, and the multiple circular grooves 711' respectively have two side openings 712' that are open on both sides of the side surface 720' of the foamed shoe body 700'.

[0089] Please refer to Figures 26 and 27, which specifically illustrate the structure of the foam shoe body 700' of the third embodiment. The foam shoe body 700' is an integrally foamed sports shoe outsole, wherein the sole 700A' has the side circumferential surface 720' and the mature open hole groove 710'. The side circumferential surface 720' surrounds the sole 700A', and the mature open hole groove 710' runs through the side circumferential surface 720' on both sides of the sole 700A'. The sole 700A' has a sole area 730', an arch area 740' and a heel area 750'. The sole area 730' and the heel area 750' are respectively located on both sides of the arch area 740'. The multiple circular grooves 711' of the mature open hole groove 710' are spaced apart in the sole area 730', the arch area 740' and the heel area 750'.

[0090] Therefore, in this third embodiment, the foamed shoe body 700' in the form of a sports shoe outsole is obtained through the aforementioned preparation method. The foamed shoe body 700' is designed with multiple circular grooves 711' arranged at intervals through the mature open hole grooves 710'. In addition to providing the cushioning performance of the foamed shoe body 700', it can also open the auxiliary accessories on the outside to enhance the supporting performance of the foamed shoe body 700', thereby improving the application diversity of the foamed shoe body 700'.

[0091] The above description is only a preferred embodiment of the present invention. Any equivalent changes made by applying the description and claims of the present invention should be included in the patent scope of the present invention.

Claims

1. A method for preparing a foamed shoe body, comprising the following steps: Step S1, providing at least a first shoe material rough blank and a second shoe material rough blank that are not foamed, wherein one of the first shoe material rough blank and the second shoe material rough blank is pre-formed with an initial open hole groove; Step S2, placing the first shoe material rough blank and the second shoe material rough blank into a foaming mold, and filling a fixing piece into the initial open hole groove accordingly, so that the first shoe material rough blank, the second shoe material rough blank and the fixing piece are combined together in the mold chamber of the foaming mold, and when the foaming mold starts the foaming process, the first shoe material rough blank and the second shoe material rough blank are foamed respectively and thermally fused into one body to generate a foamed shoe body; and Step S3, taking the foamed shoe body out of the foaming mold and shaping it, the foamed shoe body is formed with a mature open hole groove corresponding to the initial open hole groove, and the fixing part is detached from the mature open hole groove to the foamed shoe body, so that the foamed shoe body is formed with at least one side opening connected to the mature open hole groove.

2. The method for preparing a foamed shoe body as claimed in claim 1, wherein in the step S1, one side of the first shoe material rough blank is pre-depressed with the initial open hole groove, the initial open hole groove has a side opening open to a side edge of the first shoe material rough blank, and one side of the second shoe material rough blank has a bonding plane.

3. The method for preparing a foamed shoe body as described in claim 2, wherein before the step S1, it further includes a step P1, providing a first rough blank mold and a second rough blank mold, the mold cavity of the first rough blank mold is combined with a shaping convex plate, the first rough blank mold is defined with a long axis direction, the shaping convex plate is connected to the side wall of the mold cavity along the long axis direction, the mold cavity groove bottom of the second rough blank mold is a flat bottom surface, the first rough blank mold and the second rough blank mold are respectively filled with a rubber-plastic foaming material, thereby obtaining the first shoe material rough blank by the first rough blank mold, and the first shoe material rough blank forms the initial open hole groove contour corresponding to the shaping convex plate, and the second rough blank mold obtains the second shoe material rough blank.

4. The method for preparing a foamed shoe body as claimed in claim 3, wherein the rubber-plastic foaming material is a foaming material comprising ethylene-vinyl acetate copolymer, synthetic rubber and thermoplastic elastomer.

5. The method for preparing a foamed shoe body as claimed in claim 2, wherein in the step S2, the first shoe material rough blank is first filled into a lower mold cavity of the foaming mold accordingly, and the initial open hole groove of the first shoe material rough blank is opened in the lower mold cavity, and a fixed template of the fixing member is correspondingly filled in the initial open hole groove, and the second shoe material rough blank is fixed to a foamed inner core of the foaming mold, and when the lower mold cavity of the foaming mold and the foamed inner core are molded together, the second shoe material rough blank is flatly attached to the first shoe material rough blank with the combining plane, and the fixed template is pressed by the combining plane and positioned in the initial open hole groove.

6. The method for preparing a foamed shoe body as described in claim 5, wherein when the first shoe material rough blank and the second shoe material rough blank are foamed, the first shoe material rough blank contacts the bonding plane of the second shoe material rough blank to form a hot melt bond to form the foamed shoe body, and the initial open hole groove of the first shoe material rough blank is enlarged relative to the fixed template to form the mature open hole groove.

7. The method for preparing a foamed shoe body as described in claim 6, wherein in the step S3, when the foamed shoe body is taken out from the foaming mold, the fixed template is pulled out from the mature open hole groove of the foamed shoe body, so that the mature open hole groove forms a groove on one side, and the side opening of the mature open hole groove is opened toward a side edge of the foamed shoe body.

8. The method for preparing a foamed shoe body as claimed in claim 1, wherein in the step S1, the first shoe material rough blank and the second shoe material rough blank are both pre-formed with the initial open hole groove, the initial open hole groove is recessed into a first groove on a side of the first shoe material rough blank, and the initial open hole groove is recessed into a second groove on a side of the second shoe material rough blank, wherein the first groove has two first side openings open to the two side edges of the first shoe material rough blank, the second groove has two second side openings open to the two side edges of the second shoe material rough blank, and the first groove of the first shoe material rough blank and the second groove of the second shoe material rough blank are formed correspondingly.

9. The method for preparing a foamed shoe body as claimed in claim 8, wherein before the step S1, it further comprises a step P1, providing a first rough blank mold and a second rough blank mold, wherein a first shaping convex plate is combined in a mold cavity of the first rough blank mold, the mold cavity of the first rough blank mold defines a first short axis direction, the first shaping convex plate is connected to both side walls of the mold cavity of the first rough blank mold along the first short axis direction, a second shaping convex plate is combined in the mold cavity of the second rough blank mold and corresponds to the contour of the first shaping convex plate, the mold cavity of the second rough blank mold defines a second short axis direction, the second shaping convex plate is connected to both side walls of the mold cavity of the second rough blank mold along the second short axis direction, and then the first rough blank mold and the second rough blank mold are respectively filled with a rubber-plastic foaming material, so that the first rough blank mold obtains the first shoe material rough blank, and the first shoe material rough blank forms the first groove contour corresponding to the first shaping convex plate, and the second rough blank mold obtains the second shoe material rough blank, and the second shoe material rough blank forms the second groove contour corresponding to the second shaping convex plate.

10. The method for preparing a foamed shoe body as claimed in claim 9, wherein the rubber-plastic foaming material is a foaming material comprising ethylene-vinyl acetate copolymer, synthetic rubber and thermoplastic elastomer.

11. The preparation method of the foamed shoe body as claimed in claim 8, wherein in the step S2, the second shoe material blank is correspondingly filled in a lower cavity of the foaming mold, and the second groove is open to the lower cavity, and a fixing template of the fixing member is correspondingly filled in the second groove, and the fixing template partially protrudes from the second groove, the first shoe material blank is correspondingly filled in an upper cavity of the foaming mold, the first groove is open to the upper cavity and correspondingly faces the second groove, when the lower cavity and the upper cavity of the foaming mold are clamped together, the first shoe material blank is superposed on the second shoe material blank, and the fixing template partially protruding from the second groove is correspondingly received in the first groove, so that the fixing template is fixed between the first groove and the second groove, and the volume of the fixing template is approximately equal to the combined volume of the first groove and the second groove.

12. The preparation method of the foamed shoe body as claimed in claim 11, wherein when the first shoe material blank and the second shoe material blank are foamed, the contact part of the first shoe material blank and the second shoe material blank is thermally melted and combined to form the foamed shoe body, and the first groove and the second groove are enlarged relative to the fixing template to form the aging open slot.

13. The preparation method of the foamed shoe body as claimed in claim 12, wherein in the step S3, when the foamed shoe body is taken out of the foaming mold, the fixing template is withdrawn from the aging open slot of the foamed shoe body, so that the aging open slot forms a flat slot, and the flat slot has two side openings open to both sides of the side circumference of the foamed shoe body.

14. The preparation method of the foamed shoe body as claimed in claim 1, wherein in the step S1, the first shoe material blank and the second shoe material blank are both preformed with the initial open slot, the initial open slot is recessed at intervals on one side surface of the first shoe material blank to form a plurality of first arc grooves, the plurality of first arc grooves respectively have two first side openings open to both edges of the first shoe material blank, the initial open slot is recessed at intervals on one side surface of the second shoe material blank to form a second arc groove, and the plurality of second arc grooves respectively have two second side openings open to both edges of the second shoe material blank.

15. The preparation method of the foamed shoe body according to claim 14, wherein before the step S1, it further includes a step P1 of providing a first rough embryo mold and a second rough embryo mold. A plurality of first shaping convex rods are combined in the cavity of the first rough embryo mold. The cavity of the first rough embryo mold defines a first short axis direction. The plurality of first shaping convex rods are arranged at intervals and connect the two side walls of the cavity of the first rough embryo mold along the first short axis direction. A plurality of second shaping convex rods are combined in the cavity of the second rough embryo mold. The cavity of the second rough embryo mold defines a second short axis direction. The plurality of second shaping convex rods are arranged at intervals and connect the two side walls of the cavity of the second rough embryo mold along the second short axis direction. Then, a rubber and plastic foaming material is filled into the first rough embryo mold and the second rough embryo mold respectively. Thereby, the first rough embryo mold obtains the first shoe material rough embryo, and the first shoe material rough embryo forms the plurality of first arc grooves corresponding to the plurality of first shaping convex rods, and the second rough embryo mold obtains the second shoe material rough embryo, and the second shoe material rough embryo forms the plurality of second arc grooves corresponding to the plurality of second shaping convex rods.

16. The preparation method of the foamed shoe body according to claim 15, wherein the rubber and plastic foaming material is one of the foaming materials including ethylene-vinyl acetate copolymer, synthetic rubber and thermoplastic elastomer.

17. The preparation method of the foamed shoe body according to claim 16, wherein in the step S2, the second shoe material rough embryo is correspondingly filled into a lower cavity of the foaming mold, and the plurality of second arc grooves of the second shoe material rough embryo are open to the lower cavity. The fixing member is installed in the lower cavity by a pair of fixing modules and is located on both sides of the second shoe material rough embryo. The inner sides of the pair of fixing modules respectively have a plurality of convex rods. The pair of fixing modules are correspondingly filled into the plurality of second arc grooves by using the convex rods. Each of the convex rods of the pair of fixing modules is detachably butted together, and each convex rod protrudes from each of the second arc grooves. The first shoe material rough embryo is correspondingly filled into an upper cavity of the foaming mold, and the plurality of first arc grooves face the plurality of second arc grooves correspondingly and are open to the upper cavity. When the lower cavity and the upper cavity of the foaming mold are closed, the first shoe material rough embryo is laminated on the second shoe material rough embryo, and each of the convex rods partially protruding from each of the second arc grooves is correspondingly received in each of the first arc grooves, so that each convex rod is respectively fixed between each of the first arc grooves and each of the second arc grooves, and the volume of each convex rod is approximately equal to the combined volume of each of the first arc grooves and each of the second arc grooves.

18. The preparation method of the foamed shoe body according to claim 17, wherein when the first shoe material rough embryo and the second shoe material rough embryo are foamed, the contact part of the first shoe material rough embryo and the second shoe material rough embryo is melted and bonded together to form the foamed shoe body, and the plurality of first arc grooves and the plurality of second arc grooves are enlarged relative to the convex rods to form a plurality of aging open holes.

19. The manufacturing method of the foamed shoe body as claimed in claim 18, wherein in the step S3, when the foamed shoe body is taken out from the foaming mold, the butt-joint relationship of the convex rods of the pair of fixing modules is released, and the pair of fixing modules is detached from the foamed shoe body, so that the plurality of aged open slots are formed into a plurality of circular slots arranged at intervals, and the plurality of circular slots respectively have both sides open to both sides of the side peripheral surface of the foamed shoe body.

20. A foamed shoe body is manufactured by using the manufacturing method of the foamed shoe body as claimed in claim 1, and the foamed shoe body comprises: A sole having a side peripheral surface and at least one aged open slot, the side peripheral surface surrounding the sole, the aged open slot penetrating through both sides of the sole from the side peripheral surface, and the aged open slot having both sides open to the side peripheral surface.

21. The foamed shoe body as claimed in claim 20, wherein the aged open slot comprises a flat slot located in a sole area of the sole for a shoe upper to penetrate and be fixed on the sole.

22. The foamed shoe body as claimed in claim 20, wherein the aged open slot may comprise a plurality of circular slots, the sole has a sole area, a heel area and an arch area, the sole area and the heel area are respectively located on both sides of the arch area, and the plurality of circular slots are distributed at intervals in the sole area, the heel area and the arch area.

23. A foamed shoe body is manufactured by using the manufacturing method of the foamed shoe body as claimed in claim 1, and the foamed shoe body comprises: A shoe foot sleeve including a sole area and an arch area, the sole area being connected to the arch area, and the shoe foot sleeve defining an axis passing through the sole area and the arch area; and A shoe plate sleeve combined on the bottom side surface of the shoe foot sleeve, the shoe plate sleeve being combined in the arch area of the shoe foot sleeve and arranged along the axis towards the sole area direction, the shoe plate sleeve having an aged open slot with one side open towards the sole area.

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