CN115919030A

CN115919030A - Integrally formed sole and preparation method thereof

Info

Publication number: CN115919030A
Application number: CN202310001568.4A
Authority: CN
Inventors: 胡惠民; 李健; 史训敏
Original assignee: Jiangsu Starry New Material Technology Co ltd
Current assignee: Fujian Kangyin Rongxin Technology Co ltd
Priority date: 2023-01-03
Filing date: 2023-01-03
Publication date: 2023-04-07

Abstract

The application discloses integrated into one piece sole and preparation method thereof relates to the field of shoes, and integrated into one piece sole includes EVA foaming insole and is located the wear-resisting big end of EVA foaming insole bottom surface, EVA foaming insole is equipped with the elasticity function piece, elasticity function piece integrated into one piece wrap up in the inside in EVA foaming insole, the elasticity function piece is long lamellar structure, the length direction in EVA foaming insole is followed to the length direction setting of elasticity function piece, the thickness direction of elasticity function piece is followed the thickness direction in EVA foaming insole, the elasticity function piece is followed the heel portion in EVA foaming insole extends to preceding sole portion. This application elasticity functional part integrated into one piece wraps up in the inside in EVA foaming insole, can improve the machining efficiency of sole to enable the elasticity functional part and compare in EVA foaming insole and wear-resisting undersole more have the durability, thereby be favorable to making the sole keep elasticity and shock-absorbing capacity in longer time.

Description

Integrally formed sole and preparation method thereof

Technical Field

The application relates to the field of shoes, in particular to an integrally formed sole and a preparation method thereof.

Background

The sole is a component of a shoe that functions to protect the sole of the foot of a wearer, and is generally used for protection purposes. The sole can have different properties by using different materials, and materials commonly used in the prior art for manufacturing soles include ethylene-vinyl acetate (EVA), thermoplastic Polyurethane (TPU), rubber, polypropylene (PP), polystyrene (PS), and the like. These materials or combinations of materials can meet the specific requirements of different types of footwear.

At present, the soles of various sports shoes such as jogging shoes, ball shoes often make the insole with EVA expanded material to rubber or TPU material preparation undersole, make the sole of sports shoes have wear-resisting and good shock-absorbing capacity, but because EVA insole material durability is relatively poor, through long-time the use, the EVA insole is comparatively easily appeared flattening the problem of going hard, and the sole also can be at long-time wearing and tearing loss simultaneously, makes the holistic elasticity of sole and shock-absorbing capacity obviously weaken.

Disclosure of Invention

In order to solve the problem that the elasticity and the buffering performance of a sole are weakened easily when the sports sole is used for a long time in the prior art, the application provides the integrally formed sole and the preparation method thereof.

The application provides an integrated into one piece sole and preparation method adopts following technical scheme:

the utility model provides an integrated into one piece sole, includes EVA foaming insole and the wear-resisting big end that is located EVA foaming insole bottom surface, EVA foaming insole is equipped with elastic function spare, elastic function spare integrated into one piece wrap up in the inside in EVA foaming insole, elastic function spare is long lamellar structure, the length direction in EVA foaming insole is followed to elastic function spare's length direction setting, elastic function spare's thickness direction is followed the thickness direction in EVA foaming insole, elastic function spare is followed the heel portion in EVA foaming insole extends to preceding sole portion.

By adopting the technical scheme, the sole mainly provides buffering and elastic functions through the EVA foaming insole in use, and the sole contacts the ground through the wear-resistant outsole so as to ensure the wear-resistant requirement; when the sole is used, the sole is bent and deformed along with the rise and fall of the sole of a wearer, and in the process of bending and deforming the sole foaming main body, the elastic functional piece in the sole foaming main body replaces the sole foaming main body to bear a part of deformation force, so that the elastic functional piece is deformed along with the sole foaming main body, and the elastic functional piece can generate elasticity when deformed, thereby being beneficial to improving the elastic buffering effect of the sole in the use process; elastic function piece integrated into one piece wraps up in the inside in EVA foaming insole, makes elastic function piece be difficult for receiving the erosion effect of air, water and dust, makes elastic function piece compare in EVA foaming insole and wear-resisting big end more have the durability to be favorable to making the sole keep elasticity and shock-absorbing capacity in longer time. In addition, the elastic functional part is integrally formed and fixed on the inner side of the sole foaming main body, so that the wear-resistant outsole and the elastic functional part are firmly combined with the sole foaming main body respectively.

Optionally, the EVA foaming insole has an insert gap for correspondingly accommodating the elastic function part, the insert gap is of a long flat structure, two process holes are formed in the bottom surface of the EVA foaming insole, the two process holes are arranged along the length direction of the EVA foaming insole, and the two process holes are used for avoiding a protruding structure in the sole mold for heightening the elastic function part.

Through adopting above-mentioned technical scheme, at the in-process that utilizes mould shaping EVA foaming insole, the elasticity function piece receives the bed hedgehopping effect of the inboard protruding structure of mould, makes the clearance that forms the material that supplies EVA foaming insole to fill between the inner wall of elasticity function piece and mould to can wrap up the elasticity function piece after making the shaping of EVA foaming insole.

Optionally, the elastic functional part is provided with a plurality of through holes, one of the through holes is located at one end of the elastic functional part, the other through hole is located at the other end of the elastic functional part, a plurality of connecting columns are connected between two wide inner walls of the insert space, the plurality of connecting columns and the plurality of through holes are arranged in a one-to-one correspondence manner, and each connecting column penetrates through the corresponding through hole.

Through adopting above-mentioned technical scheme, both ends through at elastic function spare set up the through-hole respectively, can form the spliced pole of the two wide inner walls in connection mold insert space after the shaping of EVA foaming insole, the spliced pole can improve the wholeness in EVA foaming insole, and simultaneously, the both ends position that elasticity function spare was connected through the spliced pole in the EVA foaming insole, make between sole foaming main part and the elasticity function spare except the adhesion connection effect through different material contact surfaces, can also lock the both ends of elasticity function spare through the spliced pole, when EVA foaming insole in use takes place to warp because of wearer's walking, the EVA foaming insole can pass through spliced pole tractive elasticity function spare, thereby be favorable to ensureing the transmission effect of EVA foaming insole to the effect of elasticity function spare.

Optionally, the elastic function piece includes function piece upper strata and function piece lower floor, the function piece upper strata with be equipped with a plurality of silica gel filler strips between the function piece lower floor, the length direction of silica gel filler strip is followed the width direction of elastic function piece sets up, and is a plurality of the silica gel filler strip is followed the length direction of elastic function piece arranges the setting in proper order, the function piece upper strata with form a plurality of being used for holding between the function piece lower floor the slot shape clearance of silica gel filler strip.

By adopting the technical scheme, the silica gel filler strip is integrally formed and wrapped in the EVA foaming insole along with the elastic functional part, when the sole is pressed in use, the silica gel filler strip and the EVA foaming insole simultaneously play an elastic buffering role, and compared with a foaming material, the silica gel filler strip has stronger aging resistance, so that the EVA foaming insole can still have better elastic buffering performance after long-term use; the silica gel filler strip is made of silica gel, the silica gel can resist the high temperature of more than 300 ℃, and the forming temperature of the common foaming sole is between 200 and 300 ℃, so that the silica gel filler strip can be integrally formed and wrapped in the EVA foaming insole without melting deformation.

Optionally, the elastic functional part is provided with a sewing reinforcing thread, and the whole sewing path of the sewing reinforcing thread is arranged along the length direction of the elastic functional part.

By adopting the technical scheme, the sewing reinforcing line is connected with the elastic functional part in a sewing manner, the sewing reinforcing line is alternately exposed on the upper surface and the lower surface of the elastic functional part, and the position, on the upper surface and the lower surface of the elastic functional part, of the sewing reinforcing line is embedded into the EVA foaming insole in the process of forming the EVA foaming insole, so that the EVA foaming insole can be connected with the elastic functional part through the reinforcing sewing line, and the connection effect between the EVA foaming insole and the elastic functional part is enhanced.

Optionally, the sewing reinforcement thread extends along a wave-shaped path.

By adopting the technical scheme, the sewing reinforcing thread extends along the length direction of the elastic functional part in a wave-shaped path, when the elastic functional part is extended and deformed along with the sole in use, the track of the sewing reinforcing thread can be extended and changed adaptively, and the situation that the sewing reinforcing thread prevents the elastic functional part from deforming along with the EVA foaming insole is reduced.

Optionally, the elastic functional member includes a front end portion, a middle connecting portion and a rear end portion, the front end portion corresponds to a front sole portion of the EVA foaming midsole, the rear end portion corresponds to a rear heel portion of the EVA foaming midsole, and a portion of the front end portion close to the middle connecting portion is arranged in an upward arching manner.

By adopting the technical scheme, the sole is bent and deformed along with the rising and falling of the feet of a person in use, the main deformation area of the sole is positioned in the area of the front sole part close to the arch part, and in the bending and deformation process of the sole, the part of the deformation area of the sole close to the lower surface generates stretching deformation, and the part of the deformation part of the sole close to the upper surface generates shrinkage deformation; the position of the position that the elasticity function piece arched corresponds the main deformation region in EVA foaming insole, the thickness that EVA foaming insole is located the position that the elasticity function piece arched position top is less than the thickness that is located elasticity function piece arched position below, when dealing with the tensile deformation of material, the great position of thickness is difficult for taking place the fracture usually, and when dealing with the shrink deformation of material, the less position of thickness is difficult for taking place the condition that the material excessively extrudees the deformation usually, consequently, set up the arched position through the front end at middle mold insert, the deformation region that makes EVA foaming insole can better adapt to the deformation demand of sole.

Optionally, the wear-resistant outsole comprises a front wear-resistant piece and a rear wear-resistant piece, and the positions of the front wear-resistant piece and the rear wear-resistant piece respectively correspond to two ends of the elastic functional piece; and both the upper surface of the front wear-resistant sheet and the upper surface of the rear wear-resistant sheet are provided with heightening bulges, and the heightening bulges are used for heightening the elastic functional part.

By adopting the technical scheme, the sole is contacted with the ground through the front wear-resistant sheet and the rear wear-resistant sheet, so that the wear-resistant performance of the sole is favorably ensured, and the part of the bottom surface of the EVA foaming insole, which is positioned between the front wear-resistant sheet and the rear wear-resistant sheet, is not covered by the wear-resistant outsole, so that the EVA foaming insole can exert the function of elastic buffering; the heightening bulges positioned on the front wear-resistant sheet and the rear wear-resistant sheet heighten the wear-resistant bulges, so that holes for filling materials of the EVA foaming insole are formed between the front wear-resistant sheet and the rear wear-resistant sheet and the elastic functional part respectively, after the EVA foaming insole is subjected to injection molding, the EVA foaming insole and the wear-resistant sheets jointly seal the gaps of the insert, so that the elastic functional part is in a completely closed state as far as possible, and the erosion action of external air, water and dust on the elastic functional part is further reduced.

Optionally, the front wear pad and the rear wear pad are both provided with a limiting protrusion, the protrusion height of the limiting protrusion is greater than the protrusion height of the heightening protrusion, and the limiting protrusion is used for abutting against the peripheral side edge of the elastic functional part.

Through adopting above-mentioned technical scheme, the week side edge of spacing protruding butt elasticity function piece, when elasticity function piece erects and places in the top of preceding wear pad and back wear pad, the position between elasticity function piece and preceding wear pad and the back wear pad remains stable, after EVA foaming insole shaping, can make the elasticity function piece comparatively accord with predetermined position that sets up in the inside position in EVA foaming insole.

A preparation method of an integrally formed sole comprises the following steps:

sequentially placing the wear-resistant outsole and the elastic functional piece into the inner side of a mold, and injecting a foaming particle material into the mold;

heating the foamed particles in the mold with steam;

cooling and demoulding the sole, and trimming the sole.

Through adopting above-mentioned technical scheme, the direct one shot forming of sole makes, has reduced the equipment process, has improved production efficiency, has also improved the structural stability of product structure through one shot forming simultaneously.

In summary, the present application includes at least one of the following beneficial technical effects:

1. elastic function piece integrated into one piece wraps up in the inside in EVA foaming insole, makes elastic function piece be difficult for receiving the erosion effect of air, water and dust, makes elastic function piece compare in EVA foaming insole and wear-resisting big end more have the durability to be favorable to making the sole keep elasticity and shock-absorbing capacity in longer time.

2. Except the adhesion connection effect through different material contact surfaces, can also lock the both ends of elasticity function piece through the spliced pole between sole foaming main part and the elasticity function piece, when EVA foaming insole in use takes place to warp because of wearer's walking, EVA foaming insole can pass through spliced pole tractive elasticity function piece to be favorable to ensureing the transmission effect of EVA foaming insole to the effect of elasticity function piece.

Drawings

Fig. 1 is a schematic structural view of a sole according to example 1.

Fig. 2 is a sectional view of the sole of example 1.

Fig. 3 is a partial enlarged view at a in fig. 2.

Fig. 4 is a schematic structural view of the elastic function member of embodiment 1.

Fig. 5 is a sectional view of the sole of example 2.

Fig. 6 is a sectional view of the sole of example 3.

Fig. 7 is an exploded view of embodiment 3 for showing the connection relationship between the elastic functional element and the wear-resistant outsole.

Fig. 8 is a schematic view of embodiment 3, wherein the embodiment 3 is used for showing the connection relationship between the elastic functional element and the wear-resistant outsole.

Description of reference numerals:

1. EVA foaming middle sole; 11. the gap of the insert; 12. connecting columns; 13. a fabrication hole; 14. a communicating hole; 2. wear-resistant outsole; 3. an elastic functional member; 21. a front wear pad; 22. a rear wear pad; 23. raising the boss; 24. a limiting bulge; 31. a front end portion; 32. a rear end portion; 33. an intermediate connecting portion; 34. a through hole; 35. a functional member upper layer; 36. a functional part lower layer; 37. a long hole-shaped gap; 4. sewing a reinforcing thread; 5. silica gel pad strip.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

Example 1

The embodiment of the application discloses an integrated into one piece sole. Referring to fig. 1 and 2, the integrated into one piece sole includes EVA foaming insole 1 and is located wear-resisting undersole 2 of 1 bottom surface in EVA foaming insole, EVA foaming insole 1 is EVA foaming material, EVA foaming insole 1 is equipped with elastic function piece 3, EVA foaming insole 1 has the mold insert space 11 that is used for corresponding elastic function piece 3 that holds, elastic function piece 3 is TPU or carbon fiber material, 3 integrated into one piece parcel of elastic function piece are in the inside of EVA foaming insole 1.

The elastic functional part 3 in the sole foaming main body replaces the sole foaming main body to bear a part of deformation force, so that the elastic functional part 3 deforms along with the sole foaming main body, and the elastic buffer effect of the sole in the use process is improved; moreover, the elastic functional element 3 has a reinforcing effect on the sole foaming main body, so that the sole foaming main body is not easy to damage after long-term reciprocating deformation.

Referring to fig. 2, in the embodiment, the elastic functional member 3 is specifically a carbon fiber plate with a long sheet structure, the insert gap 11 of the EVA foamed midsole 1 corresponding to the elastic functional member 3 is a long flat structure, the length direction of the elastic functional member 3 is consistent with the length direction of the EVA foamed midsole 1, the thickness direction of the elastic functional member 3 is consistent with the thickness direction of the EVA foamed midsole 1, and the elastic functional member 3 extends from the heel portion of the EVA foamed midsole 1 to the forefoot portion.

Referring to fig. 3, the elastic functional part 3 is provided with two through holes 34, one through hole 34 is located at one end of the elastic functional part 3, the other through hole 34 is located at the other end of the elastic functional part 3, after the sole foaming main body is molded, the EVA foaming midsole 1 forms two connecting columns 12 between two wide inner walls connected with the insert space 11, the two wide inner walls of the insert space 11 refer to the upper side wall and the lower side wall of the insert space 11, the two connecting columns 12 are arranged in one-to-one correspondence with the two through holes 34, and each connecting column 12 passes through the corresponding through hole 34.

Except the adhesion connection effect through different material contact surfaces between sole foaming main part and the elasticity function piece 3, can also form the connection form that is similar to round pin hookup in the machinery through between spliced pole 12 and the elasticity function piece 3, when EVA foaming insole 1 takes place bending deformation, EVA foaming insole 1 can be through spliced pole 12 tractive elasticity function piece 3 to be favorable to ensureing the transmission effect of EVA foaming insole 1 to the effect of elasticity function piece 3.

Referring to fig. 4, the elastic functional member 3 is provided with a sewing reinforcing thread 4, the sewing reinforcing thread 4 is made of a yarn such as a nylon monofilament or a PVC monofilament, and the sewing reinforcing thread 4 is extended along the longitudinal direction of the elastic functional member 3 in a wave-shaped path.

The sewing reinforcing thread 4 sewing in-process exposes in the upper and lower surface of elasticity function piece 3 in turn, and the position that the sewing reinforcing thread 4 is located elasticity function piece 3 upper and lower surface imbeds EVA foaming insole 1 at the fashioned in-process in EVA foaming insole 1, makes EVA foaming insole 1 can connect elasticity function piece 3 through strengthening the sewing thread, makes the linkage between EVA foaming insole 1 and the elasticity function piece 3 strengthened.

Referring to fig. 1, two fabrication holes 13 are arranged on the bottom surface of an EVA foaming insole 1, the two fabrication holes 13 are arranged along the length direction of the EVA foaming insole 1, one of the fabrication holes 13 is located between the front sole portion and the rear heel portion of the EVA foaming insole 1, the other fabrication hole 13 is located on the front sole portion of the EVA foaming insole 1, the two fabrication holes 13 are used for avoiding a protruding structure used for heightening an elastic function piece 3 in a sole mold, a gap for filling the material of the EVA foaming insole 1 is formed between the heightening elastic function piece 3 and a wear-resistant outsole 2, and the EVA foaming insole 1 can be formed to cover the upper surface and the lower surface of the elastic function piece 3.

Referring to fig. 1, the wear-resistant outsole 2 includes a front wear-resistant sheet 21 and a rear wear-resistant sheet 22, the front wear-resistant sheet 21 is located at the front sole portion of the EVA foaming midsole 1, the rear wear-resistant sheet 22 is located at the rear heel portion of the EVA foaming midsole 1, and the positions of the front wear-resistant sheet 21 and the rear wear-resistant sheet 22 respectively correspond to the two ends of the elastic functional member 3.

One of the fabrication holes 13 of the EVA foaming midsole 1 is located between the front wear-resistant plate 21 and the rear wear-resistant plate 22, the other fabrication hole 13 is located above the front wear-resistant plate 21, the front wear-resistant plate 21 is provided with a communication hole 14 for communicating with the corresponding fabrication hole 13, and the communication hole 14 is used for avoiding a protruding structure of the inner wall of the mold for heightening the elastic functional component 3.

Referring to fig. 2 and 4, the elastic functional member 3 includes a front end portion 31, a middle connection portion 33 and a rear end portion 32, the front end portion 31 corresponds to a front sole portion of the EVA foam midsole 1, the rear end portion 32 corresponds to a rear heel portion of the EVA foam midsole 1, the middle connection portion 33 corresponds to an arch portion of the EVA foam midsole 1, a portion of the front end portion 31 near the middle connection portion 33 is upwardly arched, a thickness of the EVA foam midsole 1 above the arched portion of the elastic functional member 3 is smaller than a thickness of the EVA foam midsole 1 below the arched portion of the elastic functional member 3, and the arched position of the front end portion 31 corresponds to a main bending deformation position of the shoe sole during use.

When the shoe sole is used, the part of the EVA foaming insole 1 below the arch part of the elastic functional part 3 mainly generates tensile deformation, the part of the EVA foaming insole 1 above the arch part of the elastic functional part 3 mainly generates shrinkage deformation, when the material is in response to the tensile deformation, the part with larger thickness is not easy to crack normally, and when the material is in response to the shrinkage deformation, the part with smaller thickness is not easy to generate the condition of excessive extrusion deformation of the material normally, therefore, the arch part is arranged at the front end part 31 of the middle insert, so that the deformation area of the EVA foaming insole 1 can better adapt to the deformation requirement of the shoe sole.

When the sole is used, the EVA foaming middle sole 1 provides buffering and elastic functions, and the sole contacts the ground through the wear-resistant big sole 2 so as to guarantee the wear-resistant requirement; when the sole is used, the elastic functional part 3 can generate elasticity when being deformed, so that the elastic buffering effect of the sole in the use process can be improved; elastic function piece 3 integrated into one piece wraps up in EVA foaming insole 1's inside, makes elastic function piece 3 be difficult for receiving the erosion effect of air, water and dust, makes elastic function piece 3 compare in EVA foaming insole 1 and wear-resisting outsole 2 more have the durability to be favorable to making the sole keep elasticity and shock-absorbing capacity in longer time.

The embodiment also discloses a preparation method of the integrally formed sole, which comprises the following steps:

step 1: sequentially placing the wear-resistant outsole 2 and the elastic functional piece 3 into the inner side of a mold, and injecting a foaming particle material into the mold;

step 2: heating the foamed particles in the mold with steam;

and step 3: cooling and demoulding the sole, and trimming the sole.

The direct one shot forming of sole in this application embodiment makes, has reduced the equipment process, has improved production efficiency, has also improved the structural stability of product structure through one shot forming simultaneously.

Example 2

Referring to fig. 5 and 6, the present embodiment is different from embodiment 1 in that: elastic function piece 3 includes function piece upper 35 and function piece lower floor 36, is equipped with a plurality of silica gel filler strips 5 between function piece upper 35 and the function piece lower floor 36, and the length direction of silica gel filler strip 5 sets up along elastic function piece 3's width direction, and a plurality of silica gel filler strips 5 arrange the setting in proper order along elastic function piece 3's length direction, forms a plurality of long hole form clearances 37 that are used for holding silica gel filler strip 5 between function piece upper 35 and the function piece lower floor 36.

When the sole in use pressurized, silica gel filler strip 5 and EVA foaming insole 1 exert the elastic buffer effect simultaneously, wherein silica gel filler strip 5 has stronger ageing-resistant performance in comparison with the expanded material, is favorable to making EVA foaming insole 1 still can have comparatively good elastic buffer performance through long-term the use.

Example 3

Referring to fig. 6, the present embodiment is different from embodiment 1 in that: in this embodiment, the EVA foamed midsole 1 is not provided with the fabrication holes 13, and the front wear pad 21 is not provided with the communication holes 14 communicating with the fabrication holes 13. The elastic function member 3 in this embodiment is not provided with a raised portion.

Referring to fig. 7 and 8, the upper surface of the front wear pad 21 and the upper surface of the rear wear pad 22 are each provided with an elevating protrusion 23, and the elevating protrusion 23 serves to elevate the elastic function member 3.

The number of the heightening bulges 23 of the front wear-resistant plate 21 and the number of the heightening bulges 23 of the rear wear-resistant plate 22 are both set to be a plurality, and two of the heightening bulges 23 positioned on the front wear-resistant plate 21 and two of the heightening bulges 23 positioned on the rear wear-resistant pad are distributed in four corners.

Referring to fig. 7, both the front wear pad 21 and the rear wear pad 22 are provided with a limiting protrusion 24, the protrusion height of the limiting protrusion 24 is greater than the protrusion height of the padding protrusion 23, the limiting protrusion 24 is used for abutting against the peripheral side edge of the elastic functional part 3 to limit the elastic functional part 3, so that the positions of the elastic functional part 3 and the front wear pad 21 and the rear wear pad 22 are relatively stable, and the position of the elastic functional part 3 inside the EVA foaming midsole 1 is easy to maintain a composite preset setting position.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides an integrated into one piece sole, includes EVA foaming insole (1) and is located wear-resisting undersole (2) of EVA foaming insole (1) bottom surface, its characterized in that: EVA foaming insole (1) is equipped with elasticity function piece (3), elasticity function piece (3) integrated into one piece wrap up in the inside of EVA foaming insole (1), elasticity function piece (3) are long lamellar structure, the length direction of elasticity function piece (3) sets up along the length direction of EVA foaming insole (1), the thickness direction of elasticity function piece (3) is followed the thickness direction of EVA foaming insole (1), elasticity function piece (3) are followed the heel of EVA foaming insole (1) extends to preceding sole portion.

2. The integrally formed shoe sole of claim 1, wherein: the EVA foaming insole (1) is provided with an insert gap (11) used for correspondingly accommodating the elastic functional part (3), the insert gap (11) is of a long flat structure, two technical holes (13) are formed in the bottom surface of the EVA foaming insole (1), the two technical holes (13) are arranged along the length direction of the EVA foaming insole (1), and the two technical holes (13) are used for avoiding a protruding structure of the elastic functional part (3) and used for heightening in a sole mold.

3. An integrally formed shoe sole as claimed in claim 2, wherein: the elastic functional part (3) is provided with a plurality of through holes (34), one through hole (34) is located at one end of the elastic functional part (3), the other through hole (34) is located at the other end of the elastic functional part (3), a plurality of connecting columns (12) are connected between two wide inner walls of the insert gap (11), the connecting columns (12) and the through holes (34) are arranged in a one-to-one correspondence mode, and the connecting columns (12) penetrate through the corresponding through holes (34).

4. The integrally formed sole according to claim 1, wherein: elastic function spare (3) are including function upper strata (35) and function lower floor (36), function upper strata (35) with be equipped with a plurality of silica gel filler strip (5) between function lower floor (36), the length direction of silica gel filler strip (5) is followed the width direction of elastic function spare (3) sets up, and is a plurality of silica gel filler strip (5) are followed the length direction of elastic function spare (3) arranges the setting in proper order, function upper strata (35) with form a plurality of being used for holding between function lower floor (36) the slot shape clearance (37) of silica gel filler strip (5).

5. The integrally formed shoe sole of claim 1, wherein: the elastic functional piece (3) is provided with a sewing reinforcing thread (4), and the whole sewing path of the sewing reinforcing thread (4) is arranged along the length direction of the elastic functional piece (3).

6. An integrally formed shoe sole as claimed in claim 5, wherein: the sewing reinforcing thread (4) extends along a wave-shaped path.

7. The integrally formed shoe sole of claim 1, wherein: elasticity function piece (3) include front end portion (31), intermediate junction portion (33) and rear end portion (32), front end portion (31) correspond the preceding sole portion of EVA foaming insole (1), rear end portion (32) correspond the heel portion of EVA foaming insole (1), front end portion (31) are close to the position of intermediate junction portion (33) is upwards arched and is set up.

8. The integrally formed shoe sole of claim 1, wherein: the wear-resistant outsole (2) comprises a front wear-resistant piece (21) and a rear wear-resistant piece (22), and the positions of the front wear-resistant piece (21) and the rear wear-resistant piece (22) respectively correspond to the two ends of the elastic functional part (3); the upper surface of the front wear-resistant piece (21) and the upper surface of the rear wear-resistant piece (22) are both provided with heightening bulges (23), and the heightening bulges (23) are used for heightening the elastic functional piece (3).

9. The integrally formed sole according to claim 8, wherein: the front wear-resistant piece (21) and the rear wear-resistant piece (22) are both provided with limiting bulges (24), the height of the limiting bulges (24) is greater than that of the heightening bulges (23), and the limiting bulges (24) are used for abutting against the edges of the periphery of the elastic functional piece (3).

10. The method for manufacturing an integrally formed shoe sole according to any one of claims 1 to 9, comprising the steps of:

sequentially placing the wear-resistant outsole (2) and the elastic functional piece (3) into the inner side of a mold, and injecting a foaming particle material into the mold;

heating the foamed particles in the mold with steam;

cooling and demoulding the sole, and trimming the sole.