CN108813804B - Multi-hardness sole blank and sole - Google Patents
Multi-hardness sole blank and sole Download PDFInfo
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- CN108813804B CN108813804B CN201810963695.1A CN201810963695A CN108813804B CN 108813804 B CN108813804 B CN 108813804B CN 201810963695 A CN201810963695 A CN 201810963695A CN 108813804 B CN108813804 B CN 108813804B
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Classifications
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
Abstract
The invention discloses a multi-hardness sole and a sole blank, wherein the sole blank comprises a sole body blank and an inner kernel blank, the upper surface of the inner kernel blank is provided with a first toe joint bulge which is transversely arranged and a first inner longitudinal bulge which is longitudinally arranged, and the sole is manufactured by overlapping and clamping the inner kernel blank and the sole body blank and then foaming. Compared with the prior art, the toe joint bulge and the first inner longitudinal bulge on the upper surface of the inner kernel embryo are designed according to ergonomics, so that the foamed sole inner kernel accords with the structural characteristics of human feet, the wrapping property of the shoe can be improved, and the feet can be better protected. In addition, the hardness of the inner kernel is lower than that of the sole body, so that the wearing comfort and the stability of the foot support are ensured.
Description
Technical Field
The invention relates to the technical field of sole manufacturing, in particular to a multi-hardness sole blank and a sole.
Background
In order to improve the texture of sports shoe products and the value of the products, a multi-hardness sole is produced and molded in the processes of injection molding, cold mold, foaming and the like in the market.
(1) In general, the multi-hardness treatment is generally performed by selecting a material with relatively low hardness and good elasticity at the corresponding portion (hereinafter, collectively referred to as an inner core blank) of the sole, which is in contact with the sole, so that the foot feel of the formed inner core blank portion is comfortable. However, no matter the common sole or the multi-hardness sole, the surface of the inner kernel embryo is designed with the same radian, and the structure that the front sole is flat and slightly concave and the rear heel is slightly convex is adopted, so that the structure can only approximately conform to the feet of people, and the ideal fitting package and comfort degree can not be really achieved.
(2) The primary function of the arch is to spread gravity from the ankle joint forward through the talus to the metatarsal head and rearward toward the calcaneus to ensure stability of plantar support when upright. The arch elasticity plays an important role in buffering shocks when the body jumps or falls from high. During walking, especially long-distance trekking, the elasticity of the arch has a buffer function on the rhythm between the downward transmission of body gravity and the ground resilience force. The arch is divided into a transverse arch and a longitudinal arch, the transverse arch is divided into a toe joint and a rear transverse arch, the longitudinal arch is divided into an inner longitudinal and an outer longitudinal, the sole on the market at present only protects the toe joint (toe-plantar joint), the rear transverse (wedge bone and cuboid bone) and the outer longitudinal (heel, cuboid bone and four and five metatarsals) which are in direct contact with the sole due to the structural relation of the sole, and the inner longitudinal (distance, navicular, wedge and one, two and three metatarsals) cannot be correspondingly bonded and wrapped, so that the comfort is reduced while the buffering and the exercise risk is increased.
(3) When a person is in a sports state, particularly in severe sports or physical training, hidden dangers of toe joint sprain or contusion exist, and the prior sole has no corresponding attaching and wrapping structure at the toe joint, particularly at the raised position of the toe joint.
(4) The prior sole manufacturing process of the three-dimensional braided shoe adopts a common sole foaming process, and a plurality of heat conduction through holes are reserved at the inner core blank part of the sole after the sole is manufactured and molded, so that the comfort level is ensured by adding insoles in the later stage of shoe body molding; the sweat of feet is very easy to appear in the sports process or under the hot condition of air wet weather, the phenomenon of skidding of the sole is easy to appear in the shoe body, unsafe factors are increased, and the contact surface between the three-dimensional woven sole and the sole does not have anti-skidding treatment at present, so that the shoe body has to play an anti-skidding role through insoles when being formed. In the development process of shoes, the weight of the three-dimensional braided shoes is more and more tended to be reduced, and in particular, the three-dimensional braided shoes have higher requirements on the weight reduction, the process is not improved due to the fact that the general processing process is continued, the three-dimensional braided shoes cannot leave the insole in terms of comfort and skid resistance, and the development of the weight reduction is affected.
Disclosure of Invention
Accordingly, the present invention has an object to provide a multi-hardness sole blank having good packing property and good comfort after foaming, and a sole having good packing property and good comfort.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the utility model provides a many hardness sole embryo, includes through injection moulding's sole body embryo, still includes through the interior benevolence embryo of elastic material injection moulding, the upper surface of interior benevolence embryo has the protruding and the first interior longitudinal bulge of vertical setting of first toe joint that transversely set up, first toe joint protruding sets up with the protruding position of the first toe bone of the first transverse arch second of foot, protruding shape, radian, protruding height and the protruding position of the first toe joint shape, radian, recess degree of depth looks adaptation of the protruding position of the first toe bone of the first transverse arch second of foot, first interior longitudinal bulge is located the inboard reason of interior benevolence embryo sets up with the inboard longitudinal arch position of foot relatively to with the shape, radian, the recess degree of depth looks adaptation of the inboard longitudinal arch portion of foot.
Further, the inner core embryo is clamped with the sole body embryo, the sole body embryo comprises an upper ring embryo and a lower bottom embryo which are respectively subjected to injection molding, the upper ring embryo and the lower bottom embryo are clamped together, the upper ring embryo is of a hollow structure, and the inner core embryo is matched with the hollow part of the upper ring embryo.
Further, the lower surface of the inner kernel embryo is convexly provided with a flower bottom bulge, the lower flower bottom embryo is correspondingly provided with a hollowed-out flower bottom which is convenient for the flower bottom bulge to be exposed, the hollowed-out flower bottom is arranged in a hollowed-out manner, and the shape and the size of the hollowed-out flower bottom are respectively matched with the flower bottom bulge; or the flower-shaped bulges are convexly arranged on the lower surface of the lower bottom blank.
Further, the inner core embryo is clamped with the upper ring embryo through a clamping structure, and the upper ring embryo is clamped with the lower bottom embryo, the inner core embryo and the lower bottom embryo through the matching between the limiting hole and the limiting protrusion respectively.
Further, the upper ring blank comprises a side wall and a clamping layer which are integrally formed and arranged in an upper position and a lower position, the side wall is an opposite layer to the inner core blank, the clamping layer is an opposite layer to the lower bottom blank, and the clamping layer is clamped with the lower bottom blank.
Further, the joint of the side wall and the clamping layer extends outwards to form a protruding edge in an annular mode, the peripheral edge portion of the lower bottom blank is a side wall, the outer side wall of the clamping layer is matched with the inner side wall of the side wall, the protruding edge is abutted to the upper end edge of the side wall, and the peripheral edge of the protruding edge is in flat joint with the side wall.
After the technical scheme is adopted, the multi-hardness sole blank has the following beneficial effects: the first toe joint bulge and the first inner longitudinal bulge on the upper surface of the inner kernel embryo are designed according to ergonomics, are matched with the shape, radian and concave depth of the second toe bone bulge part of the transverse arch before the foot and the inner side longitudinal arch part of the foot, can promote the wrapping property of the shoe after foaming, better protect the foot, and are matched with the elastic material of the inner kernel embryo, so that the comfortable feeling is stronger.
Further, the cooperation of spacing post and spacing hole to and the joint structure plays spacing effect in this sole manufacturing process, makes each idiosome tight of mutual mating, is difficult for misplacement, prevents the colour mixture.
The multi-hardness sole is formed by foaming the multi-hardness sole embryo, the inner core embryo and the sole body embryo are clamped into a whole and then foamed to form a sole body, the inner core embryo is foamed in a die and then cooled and shaped to form an inner core with the Shore C hardness value of 43-52, the sole body embryo is foamed in the die and then cooled and shaped to form a sole body with the Shore C hardness value of 53-62, the first toe joint bulge is foamed to form a second toe joint bulge, the first inner longitudinal bulge is foamed to form a second inner longitudinal bulge, the shape, radian and bulge height of the second toe joint bulge are complementarily matched with the shape, radian and recess depth of a second toe bone bulge part of a forefoot transverse arch, and the second inner longitudinal bulge is complementarily matched with the shape, radian and recess depth of an inner foot longitudinal arch part.
Further, the upper surface of the inner core is provided with anti-skid lines for achieving the aim of foot walking and anti-skid through the action of textures on the foaming mold, and the anti-skid lines are protruding lines or concave lines.
Further, the anti-skid lines are transverse bending lines perpendicular to the friction direction of each part of the foot during walking so as to form stronger resistance, and the transverse bending lines are the protruding lines.
Further, the sole body is provided with a heat conduction through hole formed by nailing the heat conduction nails into the sole body embryo during foaming, the heat conduction through holes respectively penetrate through the upper surface and the lower surface of the sole body, the inner core is provided with a heat conduction blind hole which is formed by perforating the heat conduction nails into the inner core embryo during foaming and is coaxially aligned with the heat conduction through hole, and the heat conduction blind hole penetrates through the lower surface of the inner core.
Further, the lower surface of the sole body is provided with a rubber outsole for increasing the friction force between the sole body and the ground.
The multi-hardness sole has the following beneficial effects: the first toe joint bulge and the first inner longitudinal bulge on the upper surface of the inner core are designed according to ergonomics, are matched with the shape, radian and concave depth of the second toe bone bulge part of the transverse arch before the foot and the inner side longitudinal arch part of the foot, can improve the wrapping property of the shoe, better protect the foot, and are matched with the elastic material of the inner core, so that the comfort is stronger.
Further, the anti-skid lines improve the friction force of the contact surface of the inner kernel and the sole through the convex design and the reasonable hardness distribution design of the lines, and in addition, the hardness of the inner kernel is lower than that of the sole body, so that the wearing comfort and the stability of supporting the foot are ensured, and therefore, the sole can be used without adding an insole for matching.
Further, the upper surface of the sole (i.e., the upper surface of the inner core) does not have the heat conduction through holes as the conventional sole according to the process improvement (inverted foaming), and the inner core has high comfort by virtue of the elastic material, the anti-slip texture, the first knuckle protrusion and the first inner longitudinal protrusion.
Drawings
FIG. 1 is a schematic view of a sole blank according to the present invention;
FIG. 2 is a schematic diagram illustrating the installation of overlapping and clamping of the blanks according to the present invention;
FIG. 3 is a schematic diagram of the structure of the kernel embryo according to the present invention;
FIG. 4 is a schematic view of another angle of the inner core blank according to the present invention;
FIG. 5 is a schematic view of the structure of the upper ring blank according to the present invention;
FIG. 6 is a schematic view of another angle of the upper ring blank according to the present invention;
FIG. 7 is a schematic view of the structure of the lower sole blank according to the present invention;
FIG. 8 is a schematic view of another angle of the bottom chassis of the present invention;
FIG. 9 is a schematic view of the structure of the midsole of the present invention;
FIG. 10 is a schematic view of the anti-skid texture of the inner core according to the present invention;
FIG. 11 is a schematic view of another anti-skid texture of the inner core according to the present invention;
fig. 12 is a schematic structural view of another anti-slip pattern of the inner core according to the present invention.
In the figure:
inner kernel embryo-1; a first toe joint protrusion-11;
a first inner longitudinal projection-12; anti-skid lines-13;
bottom flower bulge-14; a fitting recess-15;
a limit hole-16; upper ring embryo-2;
side wall-21; a clamping layer-22;
engaging projections-221; convex edge-23;
limiting holes-24; a lower embryo-3;
hollowed-out bottom flower-31; side walls-32;
limit column-33; a heat conduction through hole-34;
groove-4; anti-skid lines-5;
toe lines-51; front transverse outer longitudinal lines-52;
heel texture-53; groove-54;
groove-55; groove-56;
arc-shaped protrusions-17; groove-18.
Detailed Description
In order to further explain the technical scheme of the invention, the invention is explained in detail by specific examples.
Example 1
The invention relates to a multi-hardness sole blank, which is shown in figures 1-8 and comprises an inner kernel blank 1 and a sole body blank, wherein the sole body blank comprises an upper ring blank 2 and a lower sole blank 3. The inner core embryo 1, the upper ring embryo 2 and the lower bottom embryo 3 are respectively injection molded by EVA materials with different hardness. Wherein, the hardness of the inner kernel embryo 1 is minimum relative to the hardness of each component of the sole embryo. The upper ring blank 2 and the lower bottom blank 3 are clamped together. The upper ring blank 2 is of a hollow structure, and the inner core blank 1 is fit with the hollow part of the upper ring blank 2. In the present invention, the inner core blank 1, the upper ring blank 2 and the lower sole blank 3 are all in a blank state (i.e. not foamed), and further, the inner core blank 1, the upper ring blank 2 and the lower sole blank 3 (i.e. three blanks) are correspondingly overlapped and then foamed to form the sole.
The inner core embryo 1 is the corresponding part contacted with the sole, and the shape of the inner core embryo is matched with the shape of the foot. The right foot sole blank will be described below as an example. The central axis direction of the inner kernel embryo 1 is taken as the longitudinal direction, the direction perpendicular to the longitudinal direction is transverse, the upper surface of the inner kernel embryo 1 is provided with a first toe joint bulge 11 which is transversely arranged and a first inner longitudinal bulge 12 which is longitudinally arranged, the first toe joint bulge 11 is oppositely arranged with a second toe bone bulge position of a transverse arch in front of foot, the shape, radian and bulge height of the first toe joint bulge 11 are matched with the shape, radian and recess depth of the second toe bone bulge position of the transverse arch in front of foot, the wrapping property of the sole can be improved after the first toe joint bulge 11 is foamed, toes are better protected, sprains or contusions are avoided, and the comfort is stronger. In this embodiment, the forefoot transverse arch is a specific location in the biomedical field, and the second phalanges are named specifically, so that the specific location of the second phalanges of the forefoot transverse arch is known, and therefore, the medical location of the second phalanges bulge is clear. The first inner longitudinal bulge 12 is located at the inner side edge of the inner kernel embryo 1 (the opposite side of the feet is the inner side, the opposite side is the outer side), and is opposite to the inner side longitudinal arch part of the feet, and is matched with the shape, radian and concave depth of the inner side longitudinal arch part of the feet, the wrapping property of the sole can be improved after the first inner longitudinal bulge 12 is foamed, the feet are better protected, and the comfort is stronger. In this example, the medial longitudinal arch of the foot is a specific part in the medical field, and is composed of the calcaneus, talus, navicular, 3 cuneiform bones and the medial 1 st to 3 rd metatarsals, so that the medial longitudinal arch of the foot is clearly positioned in the medical field.
The lower surface of the inner kernel embryo 1 is convexly provided with a flower bottom bulge 14, the lower flower bottom embryo 3 is correspondingly provided with a hollowed-out flower bottom 31 which is convenient for the flower bottom bulge 14 to be exposed, the hollowed-out flower bottom 31 adopts hollowed-out arrangement, and the shape and the size of the hollowed-out flower bottom 31 are respectively matched with the flower bottom bulge 14. The lower sole blank 3 has strong aesthetic property, and the weight of the sole blank (namely the sole) is reduced through hollowed-out processing; meanwhile, the concave-convex layer of the sole blank (namely the sole) is increased, and the friction performance of the sole is further enhanced.
The inner core embryo 1 and the upper ring embryo 2 are clamped together through a clamping structure. The inner core blank 1 is positioned on the peripheral side wall of the heel part, is provided with a fitting concave part 15, divides the peripheral side wall of the heel part into an upper part and a lower part, is provided on the lower part, penetrates through the lower surface of the inner core blank 1, and forms a stop end surface on the upper part. The surface of the engaging recess 15 is irregular and has a concave-convex surface. The upper ring blank 2 comprises a side wall 21 and a clamping layer 22 which are integrally formed and arranged in an upper position and a lower position, the side wall 21 is an opposite layer with the inner core blank 1, the clamping layer 22 is an opposite layer with the lower bottom blank 3, an engaging convex part 221 which is engaged with the engaging concave part 15 is convexly arranged on the inner side wall of the clamping layer 22, and the engaging convex part 221 is opposite to the engaging concave part 15. The engaging protrusion 221 has a concave-convex surface, and the engaging recess 15 and the engaging protrusion 221 are staggered, and are engaged with each other when engaged, the tip of the engaging protrusion 221 is limited by the stop end surface, and the engaging recess 15 and the engaging protrusion 221 together form the engaging structure, that is, the inner core blank 1 and the upper ring blank 2 are engaged with each other by the engagement of the engaging recess 15 and the engaging protrusion 221.
The joint of the side wall 21 and the clamping layer 22 extends outwards to form an annular protruding edge 23, the peripheral edge of the lower bottom blank 3 is a side wall 32, and the outer side wall of the clamping layer 22 is matched with the inner side wall of the side wall 32. The side wall 32 is annular, and the thickness of the side wall is consistent with the width of the convex edge 23, so that the side wall 32 and the upper annular blank 2 can be just clamped into a whole during clamping. The flange 23 abuts against the upper end edge of the side wall 32, and the outer peripheral edge of the flange 23 is smoothly joined to the side wall 32 without unnecessary projections or depressions.
The upper surface of the lower sole blank 3 (the surface opposite to the inner core blank 1) is convexly provided with a plurality of limit protrusions, the limit protrusions are preferably limit posts 33, and the limit posts 33 are mainly distributed at the front palm and the heel edge positions of the lower sole blank 3. The lower surface of the inner core blank 1 is provided with a plurality of limiting holes 16, and the limiting holes 16 are uniformly distributed at the half sole position of the inner core blank 1. The limiting hole 16 is a cylindrical hole and is a blind hole, and one end of the limiting hole penetrates through the lower surface of the inner core blank 1. The lower surface of the clamping layer 22 is provided with a plurality of limiting holes 24, the limiting holes 24 are uniformly distributed at positions of the clamping layer 22 which are relatively positioned at the heel, the limiting holes 24 are cylindrical holes and are blind holes, and one end of each limiting hole penetrates through the lower surface of the clamping layer 22. The limit posts 33 are arranged in one-to-one correspondence with the limit holes 16 and 24, and the diameter and the height of the limit posts 33 are matched with the aperture and the depth of the limit holes 16 and 24. Each limit post 33 is exactly engaged with the corresponding limit hole 16 or limit hole 24, respectively. In this way, the clamping layer 22 (i.e. the upper ring blank 2) and the lower bottom blank 3 are clamped together through the matching between the limiting holes 24 and the limiting columns 33. The inner core embryo 1 and the lower bottom embryo 3 are clamped together through the matching between the limiting hole 16 and the limiting column 33.
The multi-hardness sole is formed by foaming the multi-hardness sole embryo, and the inner kernel embryo 1 and the sole body embryo are clamped into a whole and then are combined together in a foaming way to form a sole body. The inner core embryo 1 is foamed in a mould and then cooled and shaped to form an inner core, the upper ring embryo is foamed in the same mould and then cooled and shaped to form an upper ring, and the lower sole embryo is foamed in the same mould and then cooled and shaped to form a lower sole, namely the sole body embryo is foamed to form a sole body. The Shore C hardness of the inner core is 43 to 52, preferably 46 to 50. The Shore C hardness of the sole body is 53 to 62, preferably 56 to 60. The first toe joint bulge 11 is foamed to form a second toe joint bulge, the first inner longitudinal bulge 12 is foamed to form a second inner longitudinal bulge, the shape, radian and bulge height of the second toe joint bulge are in complementary fit with the shape, radian and recess depth of the second phalange bulge part of the forefoot transverse arch, the second inner longitudinal bulge is in complementary fit with the shape, radian and recess depth of the inner longitudinal arch part of the foot, and the second inner longitudinal bulge is in good fit with the second phalange bulge. The design of the hardness difference of the inner kernel and the sole body can ensure the softness and comfort of the inner kernel and ensure that the bottom contacted with the ground is not too soft when the sole is worn, thus having stable supporting property for feet.
As shown in fig. 9, the lower sole (i.e., the sole body) has a heat conducting through hole 34 formed by nailing the heat conducting nails into the lower sole blank 3 (i.e., the sole body blank) during foaming, and the heat conducting through hole 34 is a cylindrical hole and penetrates through the upper surface and the lower surface of the lower sole blank 3 (i.e., the sole body blank) respectively. The inner core has a heat conduction blind hole (not shown in the figure) which is formed by piercing the heat conduction nail to the inner core blank 1 and is aligned with the heat conduction through hole 34 in the same axis during foaming, and the heat conduction blind hole only penetrates through the lower surface of the Yu Naren blank 1. In this embodiment, the number of the heat conducting through holes 34 is plural, the number of the heat conducting blind holes is plural, the plurality of heat conducting through holes 34 are uniformly distributed in the middle of the bottom, and the plurality of heat conducting blind holes are uniformly distributed in the middle of the inner core. The shape and diameter of the heat conducting through holes 34 and the heat conducting blind holes are the same.
The lower surface of the lower sole (namely the sole body) is provided with a rubber outsole for increasing the friction force between the lower sole and the ground. The rubber sole is generally disposed at the position where the friction force needs to be enhanced, such as the toe cap and the heel of the lower sole, and in this embodiment, the rubber outsole is also disposed at the position corresponding to the heat conducting through hole 34, so as to increase the wear resistance of the sole. It should be noted that the rubber sole may be specifically designed (or may not) according to the type of sole, for example, the rubber outsole may be omitted from the casual sole.
With the aid of fig. 10, the upper surface of the inner core is provided with anti-slip lines 13 by the effect of the grooves on the foaming mold, so that the anti-slip lines 13 can be raised lines or recessed lines for achieving the purposes of foot walking anti-slip and perspiration. In this embodiment, the anti-slip lines 13 are transverse (or tends to transverse) curved lines perpendicular to the friction directions of the toes, the forehand, and other parts of the foot during walking, the transverse curved lines are linear, and the distribution density of the transverse curved lines is substantially uniform.
The transverse bending lines comprise a plurality of continuous first curve lines which are radially distributed on the upper surface of the inner core, each first curve line extends from the inner side (left side in the figure) to the outer side (right side in the figure), and the width between each first curve line gradually becomes smaller from the outer side to the inner side. Specifically, according to the ergonomic design, the extending direction (approximately the transverse direction) of each first curve line is approximately perpendicular to the approximately moving direction (approximately the longitudinal direction) of the sole on the inner kernel surface, so as to achieve the aim of skid resistance during daily light exercise such as walking. The motion direction of the middle sole on the surface of the inner kernel is basically longitudinal movement of the thumb and the heel.
The first curve lines are in a convex shape, the upper end face of each first curve line is a plane, and the heights of the first curve lines relative to the upper surface of the inner core are preferably equal. A plurality of grooves 4 are formed between the first curve lines in an alternate distribution mode. The grooves 4 can be used for gathering sweat, the spreading area of sweat can be enlarged by a plurality of grooves 4, and the evaporation speed is high. The height of the protrusions of each first curve line is 1mm-1.5mm, preferably 1mm, the width of each first curve line gradually decreases from the outer side to the inner side, the width gradually transits from 2mm to 1mm, namely, the width of the protrusions of the first curve line is changed,
further, the width of the groove 4 is set to be changed, and the groove width is gradually reduced from the outside (right side in the figure) to the inside (left side in the figure), preferably, the groove width is changed from 2.5mm to 1.5 mm. The whole outside first curve line that presents of horizontal crooked line is sparse, and the inside first curve line is intensive, and to the effect of corresponding interior longitudinal position concentration, on the one hand guarantees that the outside has great frictional resistance, improves anti-skidding effect, on the other hand concentrate the guide to the inboard with sweat through slot 4, promotes air flow through the great space that indulges in with the foot, promotes steam evaporation then, further improves anti-skidding effect.
In this embodiment, the protruding height of the lines, the width of the lines, the distribution density of the transverse curved lines, and the like are adaptively adjusted according to the anti-slip degree, so that the purposes of preventing slipping and perspiration during foot walking are achieved, and the direct wearing (normal wearing) can be ensured under the condition that the insole is omitted.
It should be noted that, the structure of the sole body (one) may also be a corresponding structure of a sole commonly known in the art; the limiting protrusion can be other protrusions with a limiting function besides the limiting post 33, the limiting protrusion and the setting position are not limited, so that the limiting function can be exerted, and the shape, the size, the position and the like of the limiting hole can be adaptively adjusted; thirdly, the positions of the heat conducting through holes and the heat conducting blind holes are influenced by the nailing positions of the heat conducting nails, the setting positions of the heat conducting nails are not limited, so that the heat conducting function can be realized, but the heat conducting nails do not pierce the upper surface of the inner core blank 1; the bottom flower bulge 14 can be directly arranged on the lower surface of the lower bottom embryo 3 in a protruding way except the arrangement mode, and the inner kernel embryo 1 is not provided with the bottom flower bulge 14, so that the bottom flower bulge 14 is directly exposed through the lower bottom embryo.
The invention relates to a processing method of a multi-hardness sole, which comprises the following steps:
(1) Heating EVA material rice with different colors, different hardness and the same foaming multiplying power to 80-100 ℃ respectively, and preparing molten liquid base materials respectively, wherein the hardness of the EVA material rice for the inner kernel is smaller than that of the EVA material rice for the sole body;
(2) Respectively injecting the liquid base materials prepared in the step (1) into cold dies of an inner core blank 1, an upper ring blank 2 and a lower bottom blank 3, and cooling the liquid base materials in different cold dies to form a blank body to correspondingly form the inner core blank 1, the upper ring blank 2 and the lower bottom blank 3; in this embodiment, the colors and the hardness of the inner core blank 1, the upper ring blank 2 and the lower bottom blank 3 are all different; the hardness of the material rice is small, so that the hardness of the blank is small, and the hardness of the sole member after foaming of the blank is small;
(3) Overlapping and clamping the inner kernel embryo 1, the upper ring embryo 2 and the lower bottom embryo 3 prepared in the step (2) to form an unfoamed sole embryo, inversely placing the sole embryo into a hot-pressing foaming mold (the lower bottom embryo 3 is arranged on the upper part and the inner kernel embryo 1 is arranged on the lower part), vulcanizing at 150-175 ℃, and cooling and shaping to obtain the multicolor multi-hardness sole.
It should be noted that, in this embodiment, the three blanks are respectively injection-molded and then clamped for foaming, in the present invention, the three blanks may also be injection-molded in a special injection mold to prepare the lower bottom blank 3, the lower bottom blank 3 is used as a substrate, and then the upper annular blank and the inner core blank are injection-molded in the same mold (i.e. special injection mold) in a superposition manner, and the special injection mold is internally provided with three molds for prefabricating the blanks.
The multi-hardness sole blank has the following beneficial effects:
(1) The first toe joint bulge and the first inner longitudinal bulge on the upper surface of the inner kernel embryo are designed according to ergonomics, and after foaming, the first toe joint bulge and the first inner longitudinal bulge are matched with the shape, radian and concave depth of the second toe bone bulge part of the transverse arch before the foot and the longitudinal arch part inside the foot, so that the wrapping property of the shoe is improved, the foot is better protected, and the comfortable feeling is stronger by matching with the elastic material of the inner kernel embryo.
(2) The cooperation of the limit posts 33 and the limit holes 16 and 24, and the cooperation of the fit concave parts 15 and the fit convex parts 221 play a limit role in the sole manufacturing process, so that the blanks are tightly matched with each other, the dislocation is not easy, and the color mixing is prevented.
The multi-hardness sole has the following beneficial effects:
(1) The upper surface of the inner core is provided with anti-skid grains, and the friction force of the contact surface between the inner core and the sole after foaming is improved through the micro-convex design and reasonable distribution density design of the grains.
(2) The sole foaming process is improved by the process, particularly inverted foaming, so that the heat conduction nails are nailed from the lower surface of the sole, the heat conduction through holes are not reserved on the surface of the inner core, the sole foaming efficiency is guaranteed on the one hand, the inner core has high comfort level by means of elastic materials, anti-slip lines, first toe joint protrusions and first inner longitudinal protrusions, and therefore, no additional insoles are needed to be matched with wearing and the like, the shoemaking process is simplified during the later shoemaking, the weight of a shoe body is reduced, and particularly for three-dimensional woven shoes, the later quantitative production capacity is enhanced on the one hand, and the later shoemaking is lighter on the other hand.
(3) The hardness of the inner core, the upper ring and the lower bottom are different, for example, the inner core can be made of soft and high-elastic materials, meanwhile, the inner core, the upper ring and the lower bottom can be made of different-color materials through injection molding foaming, and the hardness of the materials is different, so that the hardness of each component of the sole is different, the sole structure and the hardness are more reasonable, personalized customization, such as multicolor and multiple hardness, can be accepted, and the wearing comfort is improved.
(4) The sole manufactured through processes such as injection molding, foaming and the like is of an integrated structure, is not easy to separate, does not need a bonding production line in the manufacturing process, reduces the production cost and improves the working efficiency.
Example two
The difference between this embodiment and the first embodiment is that: and (5) distinguishing anti-skid lines.
The right foot sole will be described below as an example. As shown in fig. 11, the anti-slip pattern 5 is linear and concentrated in distribution density. The anti-slip pattern 5 includes toe pattern 51, front lateral outer longitudinal pattern 52 and heel pattern 53. Blank bands without lines are respectively arranged between the toe lines 51 and the front transverse outer longitudinal lines 52 and between the front transverse outer longitudinal lines 52 and the heel lines 53.
The toe lines 51 are a plurality of second curved lines extending from the outside to the inside, and the width of the inside of the second curved lines is larger than that of the outside and gradually narrows from the innermost side to the outermost side. The distribution area of the toe lines 51 corresponds to the acting points and acting areas of the toes on the inner core surface of the sole, and the extending direction of the second curve lines corresponds to the acting points and acting areas of the toes on the inner core surface of the sole, wherein the innermost side corresponds to the thumb and the outermost side corresponds to the little finger. Specifically, according to the ergonomic design, the extending direction of the second curved lines of any area of the toe lines 51 is perpendicular to the rolling and stretching movement direction of each toe, so as to achieve the anti-skid purpose of the toe area.
The height of each second curve line is equal and ranges from 1mm to 1.5mm, the height of each second curve line and the interval design of each second curve line enable the toe line 51 to form a regular groove 54, the width of the groove 54 is changed and set, the width of the groove 54 gradually becomes smaller from the inner side to the outer side, the innermost width ranges from 1.5mm to 2mm, the outermost width ranges from 0.5mm to 1mm, the sweat guiding evaporation is facilitated, and the skid resistance is further enhanced.
The front transverse outer longitudinal lines 52 are a plurality of first concentric curve lines centered on the geometric center corresponding to the inner longitudinal lines, so that each of the first concentric curve lines is disposed in parallel. The distribution area of the first concentric curve lines corresponds to the force points and force areas of the front transverse and outer longitudinal directions of the foot. And the front transverse outer longitudinal lines 52 cut off the curve lines in the area corresponding to the inner longitudinal lines, the smooth area is formed in the area corresponding to the inner longitudinal lines, and meanwhile, the first concentric curve lines are in an open loop curve shape. Each first concentric curve line is a part of the corresponding concentric circle curve line. Specifically, according to the ergonomic design, the extending direction of the first concentric curve lines of any area of the front transverse and outer longitudinal lines 52 is perpendicular to the moving direction of each front transverse or outer longitudinal area of the foot, so as to achieve the anti-skid purpose of the front transverse and outer longitudinal areas of the foot. The first concentric curve lines are convex, have equal height and have the height range of 1mm-1.5mm, the spacing between the adjacent first concentric curve lines is equal, the spacing range is 1.5mm-2mm, and the height and spacing of the first concentric curve lines are designed to ensure that the front transverse outer longitudinal lines 52 form regular grooves 55, thereby being beneficial to sweat guiding evaporation and further enhancing skid resistance.
The heel line 53 is a plurality of second concentric curve lines with the center point of the corresponding heel as the center, so that each second concentric curve line is arranged in parallel. The distribution area of the second concentric curve lines corresponds to the following force points and the force areas of the foot. Specifically, according to the ergonomic design, the extending direction of the second concentric curve lines of any area of the heel line 53 is perpendicular to the heel moving direction, so as to achieve the anti-skid purpose of the heel area; the height of each second concentric curve line is equal, the range is 1mm-1.5mm, the second concentric curve lines are equidistantly arranged, the range is 1.5mm-2mm, the height and the interval of each second concentric curve line are designed to enable the heel line 3 to form regular grooves 56, sweat guiding evaporation is facilitated, and skid resistance is further enhanced.
In this embodiment, each of the second curve line, the first concentric curve line and the second concentric curve line is in a convex shape, and the convex height is 1mm-1.5mm, and the heights are equal. The foot is contacted with the sole by adding a certain amount of shock absorption and buffering, and the height design ensures that the drop is generated between the surface of the inner core and the sole, thereby accelerating air circulation and facilitating perspiration.
Each second curve line, each first concentric curve line and each second concentric curve line are perpendicular to the acting motion direction of each area of the foot, and the anti-skid effect of the inner core is improved.
The second curve lines, the first concentric curve lines and the second concentric curve lines are formed through foaming mold pressing, are identical to the inner core material, the density and the elasticity, achieve the purposes of damping and buffering and accelerating air circulation, and meanwhile, do not influence normal wearing and do not generate foreign body sensation.
Example III
The difference between this embodiment and the first embodiment is that: and (5) distinguishing anti-skid lines.
The right foot sole will be described below as an example. As shown in fig. 12, the anti-slip lines are in a scattered point shape and the distribution density is concentrated. The inner core is divided into an inner longitudinal region and a main region except the inner longitudinal region, and the main region is provided with a plurality of arc-shaped bulges 17 with the same shape and size.
The main region includes a forefoot region, a heel region, and a midfoot region between the forefoot region and the heel region. The arcuate projections 17 are of different densities in each of the different regions. In view of the fact that the concentrated stress area of the human foot is a forefoot area during walking, the tighter arc-shaped protrusions 17 are concentrated in the forefoot area, then the distribution of the arc-shaped protrusions 17 is loosened towards the middle section, the whole arc-shaped protrusions 17 in the heel area are loose, the fact that the heel position bears more gravity during standing is considered, the distribution of the arc-shaped protrusions 17 is loose, particularly the central area of the heel is few, comfort level during wearing is guaranteed, the protrusions with different densities are integrally distributed through the protrusions in all areas, on one hand, the sufficient anti-slip effect of the main force acting area is guaranteed, on the other hand, grooves 18 are formed in the inner kernel surface between the arc-shaped protrusions 17, sweat guiding and air circulation are facilitated, and vapor evaporation is accelerated.
In this embodiment, the highest point height of the arc-shaped protrusion 17 is 1mm-2mm. The bottom surface of the arc-shaped bulge 17 is circular, and the diameter of the bottom surface is 1.5mm-2mm.
The arch 17 of the forefoot region has a density of 12-16 protrusions per square centimeter. The heel region includes a heel center and a heel periphery, and the density of the arc-shaped protrusions 17 of the middle region and the heel periphery is 6 to 8 per square centimeter, and the density of the arc-shaped protrusions of the heel center is 2 to 3 per square centimeter.
In the present invention, (1) the anti-slip lines are divided into lines (continuous curves, straight lines, broken lines, closed loops, etc.) and scattered points (regular or irregular patterns distributed in scattered or concentrated arrangement) according to the line shape. The distribution compactness degree can be divided into uniformity type (the whole inner core area is uniformly distributed) and concentration type (the main stress area is intensively distributed) according to the grain distribution compactness degree.
The above examples and drawings are not intended to limit the form or form of the present invention, and any suitable variations or modifications thereof by those skilled in the art should be construed as not departing from the scope of the present invention.
Claims (8)
1. A multi-hardness sole embryo, includes the sole body embryo through injection moulding, its characterized in that: the upper surface of the inner kernel embryo is provided with a first toe joint bulge which is transversely arranged and a first inner longitudinal bulge which is longitudinally arranged, the first toe joint bulge is arranged opposite to a second toe bone bulge part of the forefoot transverse arch, the shape, radian and bulge height of the first toe joint bulge are matched with the shape, radian and recess depth of the second toe bone bulge part of the forefoot transverse arch, and the first inner longitudinal bulge is positioned at the inner side edge of the inner kernel embryo, is arranged opposite to the inner side longitudinal arch part of the foot and is matched with the shape, radian and recess depth of the inner side longitudinal arch part of the foot;
the sole body embryo comprises an upper ring embryo and a lower bottom embryo which are respectively subjected to injection molding, the upper ring embryo and the lower bottom embryo are clamped together, the upper ring embryo is of a hollow structure, and the inner core embryo is fit with the hollow part of the upper ring embryo; the inner kernel embryo, the upper ring embryo and the lower bottom embryo are respectively formed by injecting corresponding liquid base materials into corresponding cold molds for cooling, the inner kernel embryo, the upper ring embryo and the lower bottom embryo are overlapped and clamped to form an unfoamed sole embryo, the sole embryo is inversely placed into a hot-press foaming mold, the inner kernel embryo is inversely foamed to form an inner kernel, the sole body embryo is foamed to form a sole body, and the hardness of the sole body is larger than that of the inner kernel;
the upper surface of the inner core forms anti-skid lines for achieving the aim of foot walking and anti-skid through the action of the etching on the hot-pressing foaming mold, and grooves for achieving the aim of foot walking and perspiration are formed between the anti-skid lines;
the upper ring blank comprises a side wall and a clamping layer which are integrally formed and arranged in an upper position and a lower position, the side wall is an opposite layer to the inner core blank, the clamping layer is an opposite layer to the lower bottom blank, and the clamping layer is clamped with the lower bottom blank;
the joint of the side wall and the clamping layer outwards extends to form an annular protruding edge, the peripheral edge part of the lower bottom blank is a side wall, the outer side wall of the clamping layer is matched with the inner side wall of the side wall, the protruding edge is propped against the upper end edge of the side wall, and the peripheral edge of the protruding edge is in flat joint with the side wall.
2. A multi-hardness sole blank as claimed in claim 1, wherein: the lower surface of the inner kernel embryo is convexly provided with a flower bottom bulge, the lower flower bottom embryo is correspondingly provided with a hollowed-out flower bottom which is convenient for the flower bottom bulge to be exposed, the hollowed-out flower bottom is hollowed out, and the shape and the size of the hollowed-out flower bottom are respectively matched with the flower bottom bulge; or the flower-shaped bulges are convexly arranged on the lower surface of the lower bottom blank.
3. A multi-hardness sole blank as claimed in claim 1, wherein: the inner core embryo is clamped with the upper ring embryo through a clamping structure, and the upper ring embryo is clamped with the lower bottom embryo, the inner core embryo and the lower bottom embryo through the matching between the limiting hole and the limiting protrusion.
4. A multi-durometer sole made from the multi-durometer sole blank foam of claim 1, wherein: the sole is characterized in that the inner kernel embryo and the sole body embryo are connected into a whole in a clamping mode and then foamed to form a shoe body, the inner kernel embryo is foamed in a die and then cooled and shaped to form the inner kernel with the Shore C hardness value of 43-52, the sole body embryo is foamed in the die and then cooled and shaped to form a sole body with the Shore C hardness value of 53-62, the first toe joint bulge is foamed to form a second toe joint bulge, the first inner longitudinal bulge is foamed to form a second inner longitudinal bulge, the shape, radian and bulge height of the second toe joint bulge are complementarily matched with the shape, radian and recess depth of the second toe bone bulge of the forefoot transverse arch, and the second inner longitudinal bulge is complementarily matched with the shape, radian and recess depth of the foot inner longitudinal arch.
5. A multi-durometer sole as set forth in claim 4, wherein: the anti-skid lines are protruding lines.
6. A multi-durometer sole as set forth in claim 5, wherein: the anti-skid lines are transverse bending lines which are perpendicular to the friction directions of all parts of the foot during walking so as to form stronger resistance, and the transverse bending lines are the protruding lines.
7. A multi-hardness sole according to any one of claims 4 to 6, characterized in that: the sole body has the heat conduction nail of foaming time and is nailed into the heat conduction through-hole that sole body embryo formed, the heat conduction through-hole run through respectively in the upper and lower surface of sole body, interior benevolence has the heat conduction nail of foaming time impaled to interior benevolence embryo formed with the heat conduction blind hole of the same coaxial counterpoint of heat conduction through-hole, the heat conduction blind hole run through in the lower surface of interior benevolence.
8. A multi-durometer sole as set forth in claim 7, wherein: the lower surface of the sole body is provided with a rubber outsole for increasing the friction force between the sole body and the ground.
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| CN201810963695.1A CN108813804B (en) | 2018-08-22 | 2018-08-22 | Multi-hardness sole blank and sole |
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| CN201810963695.1A CN108813804B (en) | 2018-08-22 | 2018-08-22 | Multi-hardness sole blank and sole |
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| CN209610021U (en) * | 2018-08-22 | 2019-11-12 | 黑天鹅智能科技（福建）有限公司 | A kind of more hardness sole embryos and sole |
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| CN201019049Y (en) * | 2007-03-29 | 2008-02-13 | 聂玉红 | New health-care shoes |
| EP2274995A1 (en) * | 2009-07-16 | 2011-01-19 | TECNICA S.p.A | Sole structure for sports shoe |
| TW201201726A (en) * | 2010-07-09 | 2012-01-16 | Shui Mu Internat Co Ltd | EVA foamed sole structure with two different densities |
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