CN109619761A - A kind of 3D printing rebound lattice structure and the sole using the structure - Google Patents
A kind of 3D printing rebound lattice structure and the sole using the structure Download PDFInfo
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- CN109619761A CN109619761A CN201811487682.8A CN201811487682A CN109619761A CN 109619761 A CN109619761 A CN 109619761A CN 201811487682 A CN201811487682 A CN 201811487682A CN 109619761 A CN109619761 A CN 109619761A
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Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/04—Plastics, rubber or vulcanised fibre
-
- 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
- A43B13/18—Resilient soles
- A43B13/181—Resiliency achieved by the structure of the sole
-
- 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
- A43B13/18—Resilient soles
- A43B13/187—Resiliency achieved by the features of the material, e.g. foam, non liquid materials
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
The invention discloses the soles of a kind of 3D printing rebound lattice structure and the application structure, 3D printing rebound lattice structure includes lattice structure unit by the body center unlimited association structure that six direction diverging in front and back is constituted vertically and horizontally, and lattice structure unit is face-centered cubic lattice.The sole of 3D printing rebound lattice structure includes 3D printing rebound lattice interstitital texture, heel rock-steady structure, the fitting of sole abrasive rubber position, vamp plaster coincidence.Bullet effect is helped with starting speed and strength double-legged in lifting motion, and reduces unnecessary energy consumption.This structural elasticity is high, it is fast to reply speed of deformation, energy feedback rate is high, and good elasticity and the speed for replying deformation compensate for the loss of time caused by landing and buffering, helps foot faster more effectively to pedal and stretches.The different function such as laborsaving, ventilative, suitable foot, lightweight can be achieved.
Description
Technical field
The present invention relates to the shoes of a kind of sole more particularly to a kind of 3D printing rebound lattice structure and the application structure
Bottom.
Background technique
Sport footwear production be a kind of technology-intensive type production chain, be related to design, CAD modeling, wooden model carve, die trial,
Multiple links such as die sinking, modification, production, not only the development & production period is longer, and technology is complicated, and cannot exclude artificial
Operation, therefore, shoe industry are referred to as one of the industry for being most difficult to realize automation.
Current most of common sport footwear all uses the sole comprising foamed material.For example, by ethylene-vinyl acetate
(EVA) or foam made of polyurethane (PU) can provide outstanding cushion performance for the load occurred in sole, thus by with
Make the typical material of the midsole between the area sole Nei Di and outer bottom area.
Foot is a lever construction as human body and the unique contact site in ground, and triceps pass through heel string for power
It acts on calcaneum, fulcrum of the ankle-joint as this lever system, and half sole is then the effect of entire system of having an effect of bouncing
Point is main position of having an effect when foot walks race, bounce motion.For the feature that foot is such, scientist has studied sport footwear
" resilience ", " energy rebound " etc. help bullet concept, the principle of these concepts is: foot landing and buffering stage sole generates shape
Become to store energy, it is liftoff to pedal energy part when stretching and return to human body.In order to improve the efficiency of energy rebound, in sport footwear
The structure design at bottom is very crucial with material.Sole with rebound function, comparison ordinary movement sole elasticity is higher, replys
Speed of deformation faster, energy feedback rate it is higher, it is good elasticity and reply deformation speed compensate for caused by landing and buffering
The loss of time helps foot faster more effectively to pedal and stretches.In addition, due in compression deformation → deformation quantity maximum → reply deformation
Energy internal friction is less during this kinetic energy and elasticity can be converted mutually, therefore extends away from ground from landing and buffering to pedaling in half sole
During kinetic energy when landing can more be fed back to pedal and extend through journey, make leg extension more laborsaving, transporting for a long time
The effect for saving physical strength can be played in dynamic, the movement speed and dynamics for helping user double-legged in every movement all play
It is more outstanding, physical strength is saved in help, while improving comfort.
Solid can be divided into crystal, noncrystal and quasicrystal three categories.Crystal be by a large amount of microscopic species units (atom, from
Son, molecule etc.) by the structure of certain regular arrangement, therefore judgement arrangement rule can be studied from the size of structural units
Then and crystal habit.A geometric point is abstracted into indicate, suddenly by that a part of atom (structural unit) of period repeated arrangement
It omits specific structure location contents included in the repetition period and embodies a concentrated reflection of period repetitive mode, this is from crystal structure
The set for abstracting geometric point is referred to as crystal lattice, abbreviation lattice.
Face-centered cubic lattice be in addition to having atom on apex angle, there are also 6 atoms at the center in six faces of lattice cube,
Therefore referred to as face-centered cubic.The structure cell of face-centered cubic lattice is a cube, atom be distributed on eight angles of cubic cell and
The center in six faces.Its lattice constant: a=b=c, the atomicity actually contained in each structure cell are (1/8) × 8+6 × (1/
=4 2).Ligancy is 12；Consistency is 0.74.Basic vector be cubic unit a vertex to three arest neighbors center of areas arrow
Amount:
The i.e. face-centred cubic lattice of the parallelepiped being made of them, volume areIt is lattice
The a quarter of volume, therefore a lattice includes 4 lattice points.Its lattice primitive unit cell is granatohedron.With face-centered cubic
The member of lattice is known as aluminium (Al), copper (Cu), nickel (Ni), gold (Au), silver (Ag), γ iron (γ-Fe) and fluorite structure etc..
With fluorite structure, (main component is calcirm-fluoride, molecular formula CaF2) for, Ca is distributed in angle top and the center of area of lattice；F is distributed in
The center of each small cubes after 8 equal part of lattice.
The prior art one:
3D printing technique is also known as increases material manufacturing technology, different from previous manufacture, and 3D printing is with 3D mathematical model
Based on, object structures are constructed by layer-by-layer printing, eliminate the work of numerous complicated in industrial product forming process
Sequence, it is only necessary to 3D mathematical model be imported into 3D printer, after the completion of printing by 3D printer, by simply post-processing
Obtain a 3D printing finished product.
Compared to traditional mold forming technique, 3D printing technique (i.e. increases material manufacturing technology) can not be fettered by mold, be beaten
Any shape is printed, and has the period short, feature with high accuracy.For cooperative movement person's technical movements, conventional motion shoes are relied on
The product that multiple functional components could be completed, 3D printing shoes can be realized by the moulding of parameter change sport footwear and Density Distribution.
The advantages of 3D printing shoes: first is that saving material, do not have to reject leftover pieces, stock utilization is improved, by abandoning life
Producing line and reduce costs；Second is that can accomplish very high precision and complexity, in addition to setting on appearance curve can be shown
Meter, it is no longer necessary to which traditional cutter, fixture and lathe or any mold can generate directly from computer graphics data and appoint
The part of what shape, it greatly reduces assembling cost, it even can challenge mass production method.
The shortcomings that prior art one:
Universal in industrial product of 3D printing technique is limited by material and cost at present, and 3D printing raw material limit at present
Property it is larger, it is common to use printed material only have a small number of materials such as TPU (thermoplastic), nylon, resin, rubber, metal powder
Material, in addition current 3D printing high expensive, therefore in practical applications, 3D printing technique can not also substitute conventionally manufactured completely
Technology.Especially in shoe industry, movement midsole uses foamed material mostly, and the foamed material light-weight, elasticity is good can be with
Good comfort is provided for vola, the weight of 3D printing product and the function of auxiliary human motion can not all foam with tradition
Material is compared, this is to restrict the main reason for 3D printing sport footwear is widely applied in shoe industry.
Summary of the invention
The object of the present invention is to provide the soles of a kind of 3D printing rebound lattice structure and the application structure.
The purpose of the present invention is what is be achieved through the following technical solutions:
3D printing of the invention springs back lattice structure, including lattice structure unit is by body center front and back six vertically and horizontally
The unlimited association structure that directional divergence is constituted, the lattice structure unit are face-centered cubic lattice.
Sole using above-mentioned 3D printing rebound lattice structure of the invention, including 3D printing rebound lattice filling knot
Structure, heel rock-steady structure, sole abrasive rubber are bonded position, vamp plaster coincidence.
As seen from the above technical solution provided by the invention, 3D printing provided in an embodiment of the present invention springs back lattice knot
The sole of structure and the application structure helps bullet effect with starting speed and strength double-legged in lifting motion, and reduces not
Necessary energy consumption.This structural elasticity is high, it is fast to reply speed of deformation, energy feedback rate is high, good elasticity and reply
The speed of deformation compensates for the loss of time caused by landing and buffering, helps foot faster more effectively to pedal and stretches.
Detailed description of the invention
Fig. 1 a and Fig. 1 b are respectively single 3D printing rebound lattice structure and 3D printing rebound lattice in the embodiment of the present invention
The structural schematic diagram of sample block.
Fig. 2 to Fig. 8 is respectively the different angle and state of the sole of the 3D printing rebound lattice structure of the embodiment of the present invention
Structural schematic diagram.
In figure:
1, single 3D printing springs back lattice, 2,3D printing rebound lattice sample block, 3, cube center, 4, face-centered cubic crystalline substance
Lattice；
11,3D printing rebound lattice interstitital texture, 12, heel rock-steady structure, 13, sole abrasive rubber fitting position,
14, vamp plaster coincidence.
Specific embodiment
The embodiment of the present invention will be described in further detail below.What is be not described in detail in the embodiment of the present invention is interior
Appearance belongs to the prior art well known to professional and technical personnel in the field.
3D printing of the invention springs back lattice structure, and preferable specific embodiment is:
Including lattice structure unit, by body center, front and back six direction dissipates the unlimited association structure constituted vertically and horizontally,
The lattice structure unit is face-centered cubic lattice.
Each lattice of the lattice structure unit is connected to form by girder construction, and the beam thickness is 2~4mm, connection
Made of lattice structure unit diameter be 5~15mm.
The sole of 3D printing rebound lattice structure of the invention, preferable specific embodiment is:
Including 3D printing rebound lattice interstitital texture, heel rock-steady structure, sole abrasive rubber fitting position, vamp fitting
Position.
The heel rock-steady structure is set to the upper surface of 3D printing rebound lattice interstitital texture, the sole abrasive rubber patch
Coincidence is embedded in the 3D printing rebound lattice interstitital texture, and the vamp plaster coincidence is set to 3D printing rebound lattice and fills out
Fill the edge of structure.
3D printing rebound lattice structure of the invention and the sole using the structure have double-legged in lifting motion open
Dynamic speed and strength helps bullet to act on, and reduces unnecessary energy consumption.This structural elasticity is high, replys speed of deformation
Fastly, energy feedback rate is high, and good elasticity and the speed for replying deformation compensate for the loss of time caused by landing and buffering, helps
It helps foot faster more effectively to pedal to stretch.It is tested by sport biomechanics, it was demonstrated that its resilience performance is better than traditional midsole material
Such as EVA, PHYLON, PU, silica gel, and can also be achieved the different function such as laborsaving, ventilative, suitable foot, lightweight.By adjusting
The distribution and thickness of the 3D printing structural lattice can more be provided for the user of different sports items, different motion feature and most be closed
The mechanics of reason is fed back.
Specific embodiment, as shown in Fig. 1 a to Fig. 8:
3D resilient structures sample block or sole 3D digital modeling are carried out using computer 3D design software, by 3D resilient structures sample
It is i.e. printable that block or sole 3D mathematical model import 3D printer.
3D resilient structures sample block or sole 3D printer use SLS selective laser sintering printer.
3D resilient structures sample block or sole 3D printing utilize SLS Selective Laser Sintering, and printing raw material uses TPU powder
Last (or nylon powder) carries out successively scanning irradiation to powder under the manipulation of computer using laser, realizes TPU powder
Sintered bonds, layer upon layer realize molding.
TPU powder used by 3D printing sole is the powder of hundred micron-level particle sizes, and the temperature of sinter molding is
160 °, the partial size and forming temperature of above-described TPU powder are one kind that the present invention may use, 3D printing sole institute
The partial size and forming temperature of the TPU powder of use are including but not limited to above possibility.
For the 3D printing resilient structures sample block of midsole, filled after being optimized using centroid cubic lattice structure, each
Lattice is connected to form by girder construction.Girder thickness is 2~4mm, the diameter for the lattice structure unit being formed by connecting is about 5~
15mm.It is by the body center unlimited association structure that 6 directional divergences in front and back are constituted vertically and horizontally after structure optimization.According to one
Fixed space rhythm, repeated translation arrange a certain unit, and can fill up the structure quilt in itself place space with leaving no gaps
Referred to as unlimited association structure, its main feature is that symmetrically.Centroid cubic lattice structure can be provided by structural deformation for sport footwear good
After this structure compresses deformation, it is very strong to reply deformability for good resilience performance.Simultaneously as being the outside diverging knot in body center
The elasticity modulus of structure, all directions is uniform, also avoids sprain the ankle equivalent damage to the foot in movement with stability.
Moreover, other physical property measurements according to the present invention, the compressed shape of the 3D printing resilient structures sample block for midsole
Change is 25% or smaller, and in some cases in the range of 10% to 20%.Resilience is greater than 50%, and one
It is greater than 60% in a little examples.Hardness (hardometer Asker C) for the illustrative 3D printing resilient structures sample block can be
60 to 80, the type depending on footwear.The tensile strength of the sample block can be at least 10kg/cm2.Elongation percentage extension at break
Rate % is 200 to 500, is usually above 360.Tearing strength is 10kg/cm.
Foot half sole is the position of entire system of having an effect of bouncing, and is the main portion that has an effect when foot walks race, bounce motion
Position.Therefore in sole design, above-mentioned 3D printing rebound lattice is accordingly designed for half sole.Compare ordinary movement sole elasticity
It is higher, reply speed of deformation faster, energy feedback rate it is higher, it is good elasticity and reply deformation speed compensate for landing
The loss of time caused by buffering helps foot faster more effectively to pedal and stretches.In addition, due to maximum in compression deformation → deformation quantity
→ reply this kinetic energy of deformation and elasticity and can convert mutually during energy internal friction it is less, therefore in half sole from landing and buffering
To pedal extend away from ground during kinetic energy when landing can more be fed back to pedal and extend through journey, make leg extension more laborsaving,
The effect for saving physical strength can be played in prolonged movement, the movement speed that helps user double-legged in every movement and
Dynamics all plays more outstanding, and physical strength is saved in help, while improving comfort.
In at least some representative configurations according to the present invention, carried out using plantar pressure Biomechanics test system
Control test.Subject wears the sport footwear with 3D printing resilient structures sole and the sport footwear with traditional EVA shoe bottom,
The movement of original place jumping squat is done in plantar pressure plate dynamometric system, the mankind vertically pedal stretch and shin bone acceleration is to determine to run
The key factor of speed, pedals stretch and shoes resilience correlation.Therefore this is acted, the test as sole screen resilience
Index.The sole screen resilience of 3D printing resilient structures is greater than traditional EVA shoe bottom as the result is shown, illustrates that 3D printing resilient structures allow
The half sole energy storage of foot is big, and sole reply speed of deformation is fast.
The jumping squat at 3D printing resilient structures and traditional EVA shoe bottom, which is pedaled to stretch to pedal, stretches test data
The 3D printing footwear sole construction with rebound function of the invention, the sport footwear of this structure design is in motion process
In, when foot landing, the impact of foot, i.e. absorption energy can to absorb be faced by deforming, when less touch with the ground, sport footwear is again
By the energy feedback absorbed to foot, to increase jump height or accelerate velocity.3D printing resilient structures, compared to
Traditional EVA shoe bottom sport footwear, there is more outstanding resilience performance.While the low energy consumption of 3D printing technique, environmental protection are played without dirt
The advantages of dye, gets rid of the labor-intensive limitation of traditional shoe industry.In 3D printing resilient structures, face-centred cubic structure passes through knot
Configuration becomes the mistake that sport footwear provides compression deformation → this kinetic energy of deformation quantity maximum → reply deformation and elasticity can be converted mutually
Journey, and the optimization design that body-centered dissipates outward can allow sole stability stronger.Meanwhile resilient structures allow leg extension more
It is laborsaving, the effect for saving physical strength can be played in prolonged movement, the movement for helping user double-legged in every movement
Speed and strength all plays more outstanding, and physical strength is saved in help, while improving comfort.And the topology of 3D printing technique
Design greatly reduces sole weight, improves gas permeability.Finally, according to different motion project, different motion feature crowd
Foot movement feature, by these lattices by specific material, in the form of, size, position, density design is in each main on sole
Force part can provide corresponding sole mechanics feedback for different motion project, and meet of different motion specific crowd
Property demand.
Various 3D printings (or increasing color manufacture) technology can be used in specific embodiment.3D printing or " three dimensional printing "
Including the various technologies for forming three-dimension object and depositing the pantostrat of material on top of each other.It can be used
Exemplary 3D printing technique include but is not limited to: fuse manufacture (FFF), electron beam free forming manufacture (EBF), directly gold
Belong to laser sintered (DMLS), electron-beam smelting (EMB), selective laser melting (SLM), selective thermal sintering (SHS), selection
Property laser sintered (SLS), gypsum 3D printing (PP), layer separated growth (LOM), stereolithography (SLA), digital light processing
(DLP) and the 3D printing or increases material manufacturing technology of various other types known in the art.
Printed material can be by solid including prepared Chinese ink, resin, acrylic acid, polymer, thermoplastic material, thermosetting material, light
The material for changing material or combinations thereof is made.According to embodiment, printed material can also be by printing according to the sedimentary sequence of material
One or more layers and be formed as any desired thickness, and printed material can also include filler material with will be strong
Change aspect or aesthetics aspect assigns printed material.For example, filler material can be configured to assign desired color or face
The particle or wood shavings or any other powdered of colored pattern or the powdered material or dyestuff in excessive portion, metal or plastics
Mineral, metal or plastics, and may rely on hardness, intensity or the elasticity of desired property customizing print material.Filling
Object material can be pre-mixed with printed material before the printing, or period and printed material can be mixed on printing to vamp
It closes.Therefore, according to embodiment, printed material can be composite material.
3D resilient structures sample block or sole raw material are nylon or TPU powder.
3D resilient structures sample block or sole printing technique are SLS Selective Laser Sintering.
3D resilient structures: being filled after being optimized using centroid cubic lattice structure, each lattice is connected to form by girder construction.
Girder thickness is 2~4mm, and the diameter for the lattice structure unit being formed by connecting is about 5~15mm.It is by body after structure optimization
The heart unlimited association structure that 6 directional divergences in front and back are constituted vertically and horizontally.
Sole can be by adjusting the moulding and Density Distribution of 3D printing resilient structures, according to different motion project, difference
The foot movement feature of movement characteristic crowd carries out the structure customized based on personal unique biomechanics performance, comfortable to reinforce
Property.
3D printing resilient structures used by sole realize beyond tradition sole rebound effect, and allow leg extension more
It is laborsaving, the effect for saving physical strength can be played in prolonged movement, while there is light weight, gas permeability, can satisfy
The demand of daily exercise.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (4)
1. a kind of 3D printing springs back lattice structure, which is characterized in that including lattice structure unit by body center vertically and horizontally before
The unlimited association structure that six direction diverging is constituted afterwards, the lattice structure unit are face-centered cubic lattice.
2. the sole of 3D printing rebound lattice structure according to claim 1 and the application structure, which is characterized in that institute
Each lattice for stating lattice structure unit is connected to form by girder construction, and the beam thickness is 2~4mm, the lattice being formed by connecting
The diameter of structural unit is 5~15mm.
3. a kind of sole using 3D printing of any of claims 1 or 2 rebound lattice structure, which is characterized in that beaten including 3D
Print rebound lattice interstitital texture, heel rock-steady structure, sole abrasive rubber are bonded position, vamp plaster coincidence.
4. the sole of 3D printing rebound lattice structure according to claim 3, which is characterized in that the heel stablizes knot
Structure is set to the upper surface of 3D printing rebound lattice interstitital texture, and it is brilliant that sole abrasive rubber fitting position is embedded in the 3D printing rebound
In lattice interstitital texture, the vamp plaster coincidence is set to the edge of 3D printing rebound lattice interstitital texture.
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| CN201811487682.8A CN109619761A (en) | 2018-12-06 | 2018-12-06 | A kind of 3D printing rebound lattice structure and the sole using the structure |
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| CN112674427A (en) * | 2019-10-17 | 2021-04-20 | 清锋（北京）科技有限公司 | Functional unit that 3D printed and sole of using this functional unit |
| CN112743088A (en) * | 2020-12-28 | 2021-05-04 | 北京航星机器制造有限公司 | Rhombic dodecahedron titanium alloy lattice structure, interlayer structure and manufacturing method |
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