CN205494477U - Three -dimensional braiding combined material artificial limb - Google Patents
Three -dimensional braiding combined material artificial limb Download PDFInfo
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- CN205494477U CN205494477U CN201620177814.7U CN201620177814U CN205494477U CN 205494477 U CN205494477 U CN 205494477U CN 201620177814 U CN201620177814 U CN 201620177814U CN 205494477 U CN205494477 U CN 205494477U
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Abstract
The utility model discloses a three -dimensional braiding combined material artificial limb, including three -dimensional braiding combined material foot artificial limb and three -dimensional braiding combined material shank artificial limb, foot's artificial limb is for inside cavity and have foot's structure of tiptoe, sole, heel and ankle, wherein, the sole is equipped with two -dimentional laminated fabric mould pressing combined material reinforcement, the heel and with the ankle that the shank artificial limb is connected all is equipped with the metal reinforcement, the shank artificial limb is inside cavity and the cavity cross section is the oval -shaped structure, with the shank artificial limb that the ankle is connected is equipped with the metal reinforcement. Structural design through shank and foot's artificial limb component and combination formula three -dimensional braiding combined material's shaping on the basis that reaches the portable purpose of artificial limb component light, effectively improve the whole mechanical properties of combined material artificial limb and anti fatigue load's performance, can improve the efficiency and the life of artificial limb preparation simultaneously.
Description
Technical field
This utility model relates to a kind of composite artificial limb, particularly to a kind of resin base applying 3-d braided fiber fabric to strengthen
Composite leg and artificial limb for foot.
Background technology
Rehabilitation medicine is a comprehensive branch of learning the most multi-disciplinary in medical science, has merged engineering in medicine, biotechnology, has imitated
The advanced knowledge and technology of the multi-door subjects such as raw and composite science.Wherein rehabilitative engineering technology can be used on artificial limb, orthopedic
The arts that device etc. are crucial, the quality of life for people with disability improve and ensure study and occupational labor be normally carried out have
Significance.In recent years, high-performance fiber enhancing composite is widely used in field of prosthetic limbs, with high molecular polymer
Resin is as matrix, more more aesthetically pleasing than the artificial limb of other materials, light with the composite that high-performance fiber difference fabric strengthens,
And apply the performances such as durability degree, elasticity, toughness and resistance to environmental change all to embody higher advantage, there is bigger popularization
It is worth.Particularly, shank and the foot of the artificial limb especially motor type of high-performance fiber enhancing composite combine artificial limb,
For improving the ability to act of people with disability, particularly in competitive sport, the raising of athletic level of ability has particularly pertinent excellent
Gesture, its light weight, rigidity are big, high resilience, it is possible to have the lifting of the most even tens times than the performance of other types material.
And the most popular or composite leg of popularization and the artificial limb of foot, all use conventional fibre fabric molding
Prepared by mode.First, the general fiber architecture enhancement method used is plain weave, twill or satin fabric, is folded by thickness direction
Utilizing resin dipping former molded after Ceng, the composite of this flat fabric has a bigger rigidity, but the adhesion of interlayer
Weakness limits its stablizing of mechanical property as motor type joint part, and the flat fabric especially with this molding mode is multiple
Condensation material prepares artificial limb for foot, it is impossible to adapt to the long-term load effect of flexural fatigue frequently；Second, use high-performance fiber list
Form prepreg tape to arrangement impregnating resin glue, import molding mode and system by fiber two dimension winding arrangement mode with dry vacuum
Standby foot or the composite prosthetic structure parts of leg, the unidirectional arrangement of fiber has for the raising of foot fatigue bending load
Clear superiority, but the leg artificial limb of two-dimensional fiber winding technology molding cannot resist the compressive load that body wt brings for a long time,
And the component's life of leg artificial limb and mechanical stability are tested.
Utility model content
3 D stereo woven fabric strengthens composite and has the mechanical characteristic of isotropism material, and no matter it is at planar
Direction is respectively provided with higher intensity, rigidity, damping and environment durability degree the most in a thickness direction, utilizes fibre three-dimensional three-dimensional
The polymer matrix composites that braiding structure strengthens carry out the preparation of artificial limb for foot component, can rationally setting by foot's biomimetic features
Meter reaches higher elasticity, toughness and the performance of resisting fatigue load, utilizes fiber stereo weaving structure to strengthen resin base multiple simultaneously
Leg artificial limb framework prepared by condensation material can also effectively improve to carry for human body weight and make with the most reciprocal compressive load
With.This utility model i.e. carries out structure design and the technology of preparing disclosure of composite artificial limb for leg and foot position, logical
Cross and mix fibre three-dimensional knitting skill, copy feet shape to carry out the preparation of three dimensional fabric precast body, simultaneously in specific tired carrying
Position have employed the technology of multiple stereo weaving structural grouping application, to ensure the resist bending of foot's D braided composites component
Tired feature.Variable cross-section cylindroid knitting skill is have employed, in the connection of leg Yu foot in the preparation of leg artificial limb component
Position have employed metal embedded component type of attachment, it is ensured that the strong bonded of the two and the feature of resisting fatigue load.Pass through two above
The structure design of different parts artificial limb component and combination preparation, on the basis of reaching lightweight, portable purpose, be effectively improved composite wood
The overall mechanical property of material artificial limb and the performance of resisting fatigue load, be greatly improved efficiency prepared by artificial limb simultaneously.
This utility model is the most specific as follows:
A kind of D braided composites artificial limb, including D braided composites artificial limb for foot and D braided composites lower limb
Portion's artificial limb, described artificial limb for foot is inner hollow the foot structure with tiptoe, sole, heel and ankle, wherein,
Described sole is provided with two-dimension laminate fabric and molds composite reinforcement, described heel and being connected with described leg artificial limb
Ankle be equipped with metal reinforcements；Described leg artificial limb is inner hollow and hollow cross-section is oval structure, with
The leg artificial limb that described ankle is connected is provided with metal reinforcements.
Preferably, described D braided composites artificial limb for foot is by the first 3 D stereo braiding precast body, the first paving crack structure
With thermosetting resin composite molding, described first paving crack structure is the paving seam fiber thickness along described first 3 D stereo braiding precast body
The structure that degree direction paving seam is formed.
Described first 3 D stereo braiding precast body is conventional prior, is made up of conventional fibre braiding, those skilled in the art
Member easily prepares.Make it addition, described first 3 D stereo braiding precast body also can be mixed by high strength fiber peacekeeping high-tenacity fiber.
Described D braided composites artificial limb for foot, copies foot structure to use hollow structure form, and fiber used is with high strength fiber
Dimension coordinates high-tenacity fiber to mix use, is effectively improved the opposing of hollow structure artificial limb for foot and destroys and the characteristic of frequently bending, wherein
High strength fibre can be selected for high-strength carbon fiber, and high-strength carbon fiber is T300 and above carbon fiber, predominantly T300,
Any one or more in T700 or T800, high-tenacity fiber can be selected for the one in UHMWPE fiber, aramid fiber
Or many specific admixtures uses, the volume ratio that mixes of two kinds of fibers is 1:1 to 10:1, according to foot's force request and ad hoc structure portion
Position requires and is adjusted flexibly.
Fibrage technique used by described D braided composites artificial limb for foot use three-dimensional four-way, three-dimensional five to, three-dimensional six
To, three-dimensional seven to and the design of other 3 D multi-directional difference braiding structures, wherein for improving elasticity and the toughness of artificial limb for foot,
Heel position uses and is embedded in the composite construction of metal reinforcements, it is preferred that for improving the elasticity of artificial limb for foot and tough further
Property, described heel is S-shaped shape or nearly S-shaped shape；Two-dimension laminate fabric is used to mold in composite reinforcement at sole position
Embedding three dimensional fabric precast body interior to play invigoration effect, described " two-dimension laminate fabric molded composite material " is the routine of this area
Technical term, is the composite using mould pressing technology and two-dimension laminate knitting skill to make；Company at ankle Yu below-knee prosthesis
Connecing position uses metal reinforcements insert structure in case carrying out good connection with leg artificial limb.The three dimensional fabric at the most embedded position is pre-
Body processed uses the technology of multiple stereo weaving structural grouping application, and it is higher than other near the 3 D stereo braiding dimension of embedded component
The braiding dimension of main body section.
After described D braided composites artificial limb for foot precast body and embedded component combined knitting complete, special fibre is used to carry out two
Strengthening is knitted in secondary paving loop bonding, and paving seam fiber used is high-strength carbon fiber, and high-strength carbon fiber is T300 and above carbon fiber,
Any one or more that can be selected in T300, T700 or T800 mixes use.The paving seam fibre used by strengthening is knitted in secondary paving loop bonding
Dimensional ratio accounts for the 5-40% of artificial limb for foot three dimensional fabric precast body proportion of fibers.
Preferably, described D braided composites leg artificial limb is by the second 3 D stereo braiding precast body, the second paving crack structure
With thermosetting resin composite molding, described second paving crack structure is the paving seam fiber thickness along described second 3 D stereo braiding precast body
The structure that degree direction paving seam is formed.
Described second 3 D stereo braiding precast body is conventional prior, is made up of conventional fibre braiding, those skilled in the art
Member easily prepares.Make it addition, described second 3 D stereo braiding precast body also can be mixed by high rigidity fibers and high-tenacity fiber.
Described leg artificial limb uses the oval hollow structure of high-performance fiber fabric three-dimensional stereo weaving, and cross sectional shape and thickness can
Being adjusted flexibly according to different people leg structure, relating generally to position is shank position shape, and fiber used can be selected for Gao Gang
Degree fiber coordinates high-tenacity fiber to mix application, and the highest rigidity fibers can be selected for carbon fiber (any in M40J or M460J
A kind of), high-tenacity fiber can be selected for UHMWPE fiber, aramid fiber one or more mix use, high rigidity fibers
It is 1:1 to 10:1 with the volume ratio mixing use of high-tenacity fiber, according to shank force request and the requirement of ad hoc structure position
And be adjusted flexibly.
Fibrage technique used by described D braided composites leg artificial limb use three-dimensional four-way, three-dimensional five to, three-dimensional six
To, three-dimensional seven to and the design of other 3 D multi-directional difference braiding structures, leg artificial limb is embedded with the employing of artificial limb for foot connecting portion
The composite construction of metal reinforcements strengthening, completes for D braided composites leg artificial limb precast body and embedded component combined knitting
After thickness direction use special fiber secondary paving seam strengthening.
Strengthening is knitted in the secondary paving loop bonding of described leg artificial limb component, and paving seam fiber can be selected for carbon fiber T300, T700 or T800
In any one or more mix use.Secondary paving loop bonding is knitted the proportion of fibers used by strengthening and is accounted for leg artificial limb 3 D stereo volume
Knit the 5-40% of precast body fibre volume proportion.
Foot of the present utility model and leg the 3 D stereo braiding fiber type of precast body, ratio and arragement direction combination
It is the construction features according to lower limb and motion and regioselective, is that utility model people obtains through long-term experiment test, this
Utility model, by selecting foot and the fiber hybrid type of leg and ratio rightly, both ensure that higher rigidity and intensity,
Also there is higher elasticity and toughness, improve its service life.Specific as follows:
The Main Function of false foot is to support body quality, produces power at the volley.This utility model is according to copying foot structure special
The kinetic character that point and foot produce, first, is designed to hollow structure form, and selects high strength fiber peacekeeping high especially
Toughness fiber mutually mixes, and wherein, high-strength carbon fiber intensity is higher, and the aramid fiber in high-tenacity fiber has good resisting
Impact and fatigue performance, have good dielectricity and chemical stability, resistance to refrangibility and good processability, UHMWPE is fine
The impact resistance of dimension, anti-wear performance and fatigue performance are excellent, obtain through the test of utility model people's long-term experiment, use height
Strength carbon fiber combines with high-ductility fiber hybrid, produces its intensity of hybrid buildup and the effect of toughness, the 3 D weaving prepared
The artificial limb for foot of composite has intensity and the toughness of excellence so that the bearing capacity of artificial limb for foot is higher, mixes ratio preferred
For 1:1～10:1, when proportional numerical value is less than 1, artificial limb for foot toughness is relatively big but intensity is less, when proportional numerical value is more than 10,
The toughness of artificial limb for foot is excessive compared with small intensity, and two kinds of situations are all unsatisfactory for using requirement；Secondly, enterprising at precast body thickness direction
The paving seam strengthening of row secondary, improves artificial limb for foot component strength and stiffness in a thickness direction further, is conducive to improving overall foot
The mechanical property of portion's artificial limb；It addition, from the point of view of driven mechanics viewpoint, foot is supporting early stage storage energy, and adopts at heel position
With the composite construction of metal reinforcements, having increased considerably its energy storage, further, and the design of S type heel makes it
The most as a spring, strengthen its elastic potential energy, at later stage releasably more energy；Further, the body of the sole carrying of foot
Strength is relatively big, foot bottom uses two-dimension laminate fabric mold composite reinforcement and strengthens, it is ensured that time upright, vola supports
Steadiness.
Body weight is transferred to foot by artificial leg, and activity in the process of walking is freely.This utility model is according to this feature, first,
Have employed variable cross-section ellipse hollow knitting skill, experiment proves to use oval hollow structure, plays supporting body steadiness
Important function, and there is the effect accommodating deformed limb, active force between transmission deformed limb and artificial limb, and select high rigidity fine especially
Peacekeeping high-tenacity fiber mutually mixes, and obtains through the test of utility model people's long-term experiment, uses high rigidity fibers and high-ductility fiber
Hybrid combination, produces its rigidity of hybrid buildup and the effect of toughness, the leg artificial limb tool of the D braided composites prepared
There are rigidity degree and the toughness of excellence, improve the feature of resisting fatigue load, mix ratio and be preferably 1:1～10:1, work as proportional numerical value
During less than 1, artificial limb for foot toughness is relatively big but rigidity is less, when proportional numerical value is more than 10, and the less rigidity of toughness of artificial limb for foot
Excessive, two kinds of situations are all unsatisfactory for using requirement；Secondly, precast body thickness direction carries out secondary paving seam strengthening, further
Improve leg artificial limb component strength and stiffness in a thickness direction, be conducive to improving the mechanical property of overall leg artificial limb；It addition,
Connecting portion at leg and foot have employed metal reinforcements embedded component type of attachment, it is ensured that the strong bonded of the two and resisting fatigue
The feature of load.
Preferably, described thermosetting resin be epoxy resin, phenolic resin, unsaturated polyester resin any one, finally make
The content of the D braided composites artificial limb resin obtained is 35～50%.
Described leg artificial limb and the connection of artificial limb for foot, use the metal reinforcements being embedded in be bolted.Used
Bolt specification be adjusted flexibly according to the size and shape specification of human body.
The preparation method of described D braided composites artificial limb, including:
(1) high strength fiber peacekeeping high-tenacity fiber assorted fibre is utilized to make the artificial limb for foot 3 D stereo braiding precast body of hollow,
During braiding, the precast body at heel and ankle is embedded in metal reinforcements, the precast body at sole is embedded in compound
Material members, then uses paving seam fiber to carry out secondary paving seam on the thickness direction of artificial limb for foot 3 D stereo braiding precast body strong
Change；
(2) cross section utilizing high rigidity fibers and high-tenacity fiber assorted fibre to make hollow and hollow is oval leg vacation
Limb 3 D stereo braiding precast body, is embedded in gold to the precast body at the leg artificial limb being connected with described ankle during braiding
Belong to reinforcement, then use paving seam fiber to carry out secondary paving seam on the thickness direction of leg artificial limb 3 D stereo braiding precast body strong
Change；
(3) the artificial limb for foot precast body after being stitched by (1) middle berth and the leg artificial limb after (2) middle berth seam connect, and use thermosetting
Resin adhesive liquid is matrix, to the artificial limb precast body dipping after connecting, composite curing molding.
In step (3), composite curing molding uses vacuum to import and the composite molding technique of rapid thermosetting combination, for more than
3 D stereo braiding and secondary paving seam strengthening after artificial limb precast body, use thermosetting resin glue (epoxy resin, phenolic resin,
Any one in unsaturated polyester resin etc.) it is matrix, use VARI vacuum introducing technology to realize resin adhesive liquid to mixing fibre
The rapid impregnation of dimension stereochemical structure, curing process is carried out in large-scale baking oven, and whole solidification process keeps vacuum systems work,
Vacuum ensures in the range of 0.06-0.1MPa, and after impregnating resin, artificial limb gel content is maintained at 35-50%, solidification temperature and time
It is adjusted flexibly according to resin properties.
Use fabric 3 D stereo braiding integrated molding technology, copy foot structure to use hollow structure form, in braiding
During use hardware or the embedded strengthening of composite element, the braiding of foot's specific part simultaneously to foot specific part
Structure can have different from overall foot structure, and multiple stereo weaving structural grouping is formed entirety
This utility model has following major advantage compared with existing composite leg or artificial limb for foot:
(1) 3 D stereo fiber reinforced resin based composites is used to prepare leg or artificial limb for foot component, can be according to human body
Bionics requirement, the external form of flexible design artificial limb；The knot of specific part can be carried out according to artificial limb element mechanics performance requirement simultaneously
Structure designs, and to realize the specific aim raising of the fatigue load intensity of different parts, is effectively improved the service life of composite artificial limb
Environment durability degree.
(2) above-mentioned 3 D multi-directional stereo weaving artificial limb precast body component through-thickness is carried out secondary paving loop bonding and knits structure-reinforced,
Can further improve the artificial limb component strength and stiffness at thickness direction.3 D weaving is knitted process with secondary paving loop bonding and is combined, and one
Secondary property completes precast body and prepares, and production efficiency is higher.On the basis of reaching lightweight, portable purpose, it is effectively improved composite false
The overall mechanical property of limb and the performance of resisting fatigue load.
Accompanying drawing explanation
Fig. 1 is D braided composites artificial limb for foot schematic diagram.
Fig. 2 is D braided composites leg artificial limb schematic diagram.
Wherein, 1, artificial limb for foot, the 2, first metal reinforcements, 3, composite reinforcement, the 4, second metal reinforcements, 5,
Below-knee prosthesis, the 6, the 3rd metal reinforcements.
Detailed description of the invention
This utility model relates to a kind of polymer matrix composites leg utilizing 3 D stereo fabric to strengthen and artificial limb for foot, under
Face further illustrates in conjunction with the embodiments.
Embodiment 1
A kind of D braided composites artificial limb, including D braided composites artificial limb for foot 1 and D braided composites
Below-knee prosthesis 5；
As it is shown in figure 1, described D braided composites artificial limb for foot 1 is to be mixed system by high strength fiber peacekeeping high-tenacity fiber
The artificial limb for foot 3 D stereo become weaves precast body, spreads along described artificial limb for foot 3 D stereo braiding precast body thickness direction
Structure that is that seam is formed and that be made up of paving seam fiber and thermosetting resin three's composite molding；Described artificial limb for foot is in inside
Empty and have the foot structure of tiptoe, sole, heel and ankle, wherein, the 3 D stereo braiding at described sole is prefabricated
The internal two-dimension laminate fabric that is provided with molds composite reinforcement 3, is provided with the at described heel in 3 D stereo braiding precast body
One metal reinforcements 2, is provided with the second metal in the 3 D stereo braiding precast body at the ankle being connected with described leg artificial limb and increases
Strong part 4；
As in figure 2 it is shown, described D braided composites below-knee prosthesis 5 is to be mixed system by high rigidity fibers and high-tenacity fiber
The leg artificial limb 3 D stereo become weaves precast body, spreads along described leg artificial limb 3 D stereo braiding precast body thickness direction
Structure that is that seam is formed and that be made up of paving seam fiber and thermosetting resin three's composite molding；Described below-knee prosthesis 5 is internal
Hollow and hollow cross-section are oval structure, and the 3 D stereo braiding at the leg artificial limb being connected with described ankle is pre-
Make and internal be provided with the 3rd metal reinforcements 6.
Above-mentioned D braided composites artificial limb preparation method is as follows.First, the preparation of D braided composites artificial limb for foot.
Artificial limb for foot component uses fabric 3 D stereo braiding integrated molding technology, copies foot structure to use hollow structure form,
T300 carbon fiber and aramid fiber is utilized to mix the filament fiber raw material prepared as three dimensional fabric, wherein carbon fiber and aramid fiber
The ratio that mixes be 1:1, use three-dimensional four-way fabric construction to carry out the body design of artificial limb for foot component, wherein at heel position
Using the composite construction being embedded in the first metal reinforcements 2, the three dimensional fabric at this position uses three-dimensional five to structure；At foot bottom
It is interior to play invigoration effect that position uses two-dimension laminate fabric mold pressing composite reinforcement 3 to be embedded in three dimensional fabric precast body, this portion
The three dimensional fabric of position uses three-dimensional six to structure；Use the second metal reinforcements 4 embedded at ankle and the connecting portion of below-knee prosthesis
Structure is in case being firmly connected with leg artificial limb 1, and the three dimensional fabric at this position uses three-dimensional five to structure.For artificial limb for foot
The reinforcement of components three-dimensional fabric precast body and inside uses the paving seam strengthening of special fiber secondary, paving seam at thickness direction after embedding
Fiber can be selected for T700 carbon fiber.The paving seam proportion of fibers that secondary paving loop bonding is knitted used by strengthening accounts for artificial limb for foot parts three dimensional fabric
The 15% of precast body proportion of fibers.
Second, the preparation of D braided composites leg artificial limb.Calf artificial limb component uses high-performance fiber fabric three-dimensional to stand
The oval hollow structure of body braiding, selects M40J carbon fiber to use with UHMWPE fiber hybrid, and assorted fibre ratio is
2:1, uses three-dimensional four-way fabric construction to carry out the body design of calf artificial limb component, wherein leg artificial limb component and artificial limb for foot
Connecting portion uses the composite construction of embedded 3rd metal reinforcements 6, and this connecting portion uses three-dimensional five to fabric construction, three-dimensional
Woven composite leg artificial limb precast body and embedded metal connector combined knitting use special fiber two at thickness direction after completing
Secondary paving seam strengthening, the paving seam proportion of fibers that paving seam fiber selects T800 carbon fiber, secondary paving loop bonding to knit used by strengthening accounts for leg artificial limb
The 20% of parts three dimensional fabric precast body proportion of fibers.Leg artificial limb and the connection of artificial limb for foot, use the metal being embedded in strengthen
Part has been bolted.Bolt specification used is adjusted flexibly according to the size and shape specification of human body.
3rd, use vacuum to import the composite molding technique with rapid thermosetting combination, be directed to above 3 D stereo braiding artificial limb
The precast body of component, using thermosetting epoxy resin adhesive is matrix, uses VARI vacuum introducing technology to realize resin adhesive liquid
Assorted fibre stereochemical structure is carried out rapid impregnation, and curing process is carried out in large-scale baking oven, and whole solidification process keeps vacuum
System works continuously, and vacuum is maintained at 0.09MPa.Prosthetic components after impregnating resin solidifies 3 hours aftershapings in 80 DEG C,
Gel content is maintained at 40%.Utilize the prosthetic product that above example is processed, relative to the prosthetic product of comparative example 1, use the longevity
Life improves more than 80%, and artificial limb component improves more than 20% in intensity raising more than 30% and the rigidity of thickness direction.
Comparative example 1: the difference with embodiment 1 is, comparative example 1 is not provided with the first metal reinforcements, the second metal reinforcements,
3rd metal reinforcements and composite reinforcement, artificial limb for foot and leg artificial limb are connected by bolt routine and are attached, other
Identical with embodiment 1, the dimensions finally preparing artificial limb is identical with embodiment 1.
Conclusion: when 3 D stereo braiding foot and leg artificial limb are not provided with metal reinforcements and composite reinforcement, prepare
It is good, especially with the life-span that the mechanical property of the prosthetic product come and life-span are not so good as test effect of the present utility model, it is seen that metal
Reinforcement and the necessity of composite reinforcement.
Embodiment 2
This utility model relates to a kind of foot utilizing 3 D stereo fiber reinforced resin based composites to prepare and leg is false
Limb, its preparation method is as follows.First, the preparation of D braided composites artificial limb for foot.Artificial limb for foot component uses fiber to knit
Thing 3 D stereo braiding integrated molding technology, copies foot structure to use hollow structure form, utilizes T700 carbon fiber and aramid fiber
The filament fiber raw material that fiber hybrid is prepared as three dimensional fabric, wherein the ratio that mixes of carbon fiber and aramid fiber is 1:1, uses
Three-dimensional five body design carrying out artificial limb for foot component to fabric construction, wherein use at heel position and are embedded in metal reinforcements
Composite construction, the three dimensional fabric at this position uses three-dimensional five to structure；Two-dimension laminate fabric is used to mold at sole position compound
It is interior to play invigoration effect that material reinforcement is embedded in three dimensional fabric precast body, and the three dimensional fabric at this position uses three-dimensional six to structure；
Connecting portion at ankle and below-knee prosthesis use metal reinforcements insert structure in case being firmly connected with leg artificial limb, this portion
The three dimensional fabric of position uses three-dimensional six to structure.Reinforcement for artificial limb for foot components three-dimensional fabric precast body and inside embeds it
After thickness direction use special fiber secondary paving seam strengthening, paving seam fiber can be selected for T300 carbon fiber.Strengthening is knitted in secondary paving loop bonding
Paving seam proportion of fibers used accounts for the 22% of artificial limb for foot parts three dimensional fabric precast body proportion of fibers.
Second, the preparation of D braided composites leg artificial limb.Calf artificial limb component uses high-performance fiber fabric three-dimensional to stand
The oval hollow structure of body braiding, selects M60J carbon fiber and aramid fiber to mix use, and assorted fibre ratio is 3:1, adopts
The body design of calf artificial limb component, wherein leg artificial limb component and artificial limb for foot connecting portion is carried out with three-dimensional four-way fabric construction
Position uses the composite construction of embedded metal reinforcement strengthening, and this connecting portion uses three-dimensional five to be combined to fabric construction, 3 D weaving
Material leg artificial limb precast body and embedded metal reinforcement combined knitting use special fiber secondary paving seam strong at thickness direction after completing
Changing, spread seam fiber selection T300 carbon fiber, the paving seam proportion of fibers that secondary paving loop bonding is knitted used by strengthening accounts for leg prosthetic components three-dimensional
The 30% of fabric precast body proportion of fibers.Leg artificial limb and the connection of artificial limb for foot, use the metal reinforcements being embedded in pass through spiral shell
Tether and connect.Bolt specification used is adjusted flexibly according to the size and shape specification of human body.
3rd, use vacuum to import the composite molding technique with rapid thermosetting combination, be directed to above 3 D stereo braiding artificial limb
The precast body of component, using thermosetting unsaturated polyester resin adhesive is matrix, uses VARI vacuum introducing technology to realize tree
Fat glue carries out rapid impregnation to assorted fibre stereochemical structure, and curing process is carried out in large-scale baking oven, and whole solidification process is protected
Holding vacuum systems to work continuously, vacuum is maintained at 0.06MPa.Prosthetic components after impregnating resin solidifies 2.5 hours in 70 DEG C
Aftershaping, gel content is maintained at 37%.Utilize the prosthetic product that above example is processed, compared to the prosthetic product of comparative example 2,
Improving more than 60% service life, artificial limb component improves more than 70% in intensity raising more than 65% and the rigidity of thickness direction.
Comparative example 2: the difference with embodiment 2 is, in the artificial limb for foot precast body of comparative example 2, carbon fiber and aramid fiber is mixed
Miscellaneous ratio is 1:2, and the M60J carbon fiber in leg artificial limb precast body and aramid fiber assorted fibre volume ratio are 1:3, other
Identical with embodiment 2, the dimensions finally preparing artificial limb is identical with embodiment 2.
Conclusion: when the assorted fibre selecting the combination of inappropriate fiber hybrid ratio prepares 3 D stereo braiding foot and leg artificial limb
Time, it is good that the mechanical property of the prosthetic product prepared and life-span are not so good as test effect of the present utility model.
Embodiment 3
This utility model relates to a kind of foot utilizing 3 D stereo fiber reinforced resin based composites to prepare and leg is false
Limb, its preparation method is as follows.First, the preparation of D braided composites artificial limb for foot.Artificial limb for foot component uses fiber to knit
Thing 3 D stereo braiding integrated molding technology, copies foot structure to use hollow structure form, utilizes T800 carbon fiber and aramid fiber
The filament fiber raw material that fiber hybrid is prepared as three dimensional fabric, wherein the ratio that mixes of carbon fiber and aramid fiber is 1:1, uses
Three-dimensional four-way fabric construction carries out the body design of artificial limb for foot component, wherein uses at heel position and is embedded in metal reinforcements
Composite construction, the three dimensional fabric at this position uses three-dimensional six to structure；Two-dimension laminate fabric is used to mold at sole position compound
It is interior to play invigoration effect that material reinforcement is embedded in three dimensional fabric precast body, and the three dimensional fabric at this position uses three-dimensional six to structure；
Connecting portion at ankle and below-knee prosthesis use metal reinforcements insert structure in case being firmly connected with leg artificial limb, this portion
The three dimensional fabric of position uses three-dimensional five to structure.Reinforcement for artificial limb for foot components three-dimensional fabric precast body and inside embeds it
After thickness direction use special fiber secondary paving seam strengthening, paving seam fiber can be selected for T300 carbon fiber.Strengthening is knitted in secondary paving loop bonding
Paving seam proportion of fibers used accounts for the 26% of artificial limb for foot parts three dimensional fabric precast body proportion of fibers.
Second, the preparation of D braided composites leg artificial limb.Calf artificial limb component uses high-performance fiber fabric three-dimensional to stand
The oval hollow structure of body braiding, selects M40J carbon fiber to use with UHMWPE fiber hybrid, and assorted fibre ratio is
4:1, uses three-dimensional five body design carrying out calf artificial limb component to fabric construction, wherein leg artificial limb component and artificial limb for foot
Connecting portion uses the composite construction of embedded metal reinforcement strengthening, and this connecting portion uses three-dimensional seven to compile to fabric construction, three-dimensional
Woven composite leg artificial limb precast body and embedded metal reinforcement connector combined knitting use particular fiber at thickness direction after completing
Wei Ercipu stitches strengthening, and the paving seam proportion of fibers that paving seam fiber selects T800 carbon fiber, secondary paving loop bonding to knit used by strengthening accounts for leg
The 30% of prosthetic components three dimensional fabric precast body proportion of fibers.Leg artificial limb and the connection of artificial limb for foot, use the metal being embedded in
Reinforcement has been bolted.Bolt specification used is adjusted flexibly according to the size and shape specification of human body.
3rd, use vacuum to import the composite molding technique with rapid thermosetting combination, be directed to above 3 D stereo braiding artificial limb
The precast body of component, using thermosetting epoxy resin adhesive is matrix, uses VARI vacuum introducing technology to realize resin adhesive liquid
Assorted fibre stereochemical structure is carried out rapid impregnation, and curing process is carried out in large-scale baking oven, and whole solidification process keeps vacuum
System works continuously, and vacuum is maintained at 0.85MPa.Prosthetic components after impregnating resin solidifies 2 hours aftershapings in 70 DEG C,
Gel content is maintained at 36%.Utilize the prosthetic product that above example is processed, compared to the prosthetic product of comparative example 3, use the longevity
Life improves more than 60%, and artificial limb component improves more than 65% in intensity raising more than 55% and the rigidity of thickness direction.
Comparative example 3: the difference with embodiment 3 is, the artificial limb for foot 3 D stereo braiding precast body of comparative example 3 and leg are three-dimensional
Stereo weaving precast body does not use secondary paving seam strengthening, and other are identical with embodiment 3, finally prepare the dimensions of artificial limb
Identical with embodiment 3.
Conclusion: when the 3 D stereo braiding precast body prepared does not uses secondary paving seam strengthening at thickness direction, prepare
The mechanical property of prosthetic product and the life-span not as test effect of the present utility model good, it is seen that secondary paving seam intensive treatment important
Property.
Embodiment 4
This utility model relates to a kind of foot utilizing 3 D stereo fiber reinforced resin based composites to prepare and leg is false
Limb, its preparation method is as follows.First, the preparation of D braided composites artificial limb for foot.Artificial limb for foot component uses fiber to knit
Thing 3 D stereo braiding integrated molding technology, copy foot structure use hollow structure form, utilize T800 carbon fiber with
The filament fiber raw material that UHMWPE fiber hybrid is prepared as three dimensional fabric, wherein carbon fiber and aramid fiber mix ratio
For 1:1, use three-dimensional six body design carrying out artificial limb for foot component to fabric construction, wherein use at heel position and be embedded in
The composite construction of metal reinforcements, the three dimensional fabric at this position uses three-dimensional seven to structure；Use two-dimension laminate to knit at sole position
It is interior to play invigoration effect that thing molded composite material reinforcement is embedded in three dimensional fabric precast body, and the three dimensional fabric at this position uses three
Dimension seven is to structure；Connecting portion at ankle with below-knee prosthesis uses metal reinforcements insert structure in case carrying out jail with leg artificial limb
Being solidly connected, the three dimensional fabric at this position uses three-dimensional five to structure.For artificial limb for foot components three-dimensional fabric precast body and inside
Reinforcement uses the paving seam strengthening of special fiber secondary at thickness direction after embedding, and loop bonding reinforcing fiber can be selected for T800 carbon fiber.
The paving seam proportion of fibers that secondary paving loop bonding is knitted used by strengthening accounts for the 29% of artificial limb for foot parts three dimensional fabric precast body proportion of fibers.
Second, the preparation of D braided composites leg artificial limb.Calf artificial limb component uses high-performance fiber fabric three-dimensional to stand
The oval hollow structure of body braiding, selects M40J carbon fiber and aramid fiber to mix use, and assorted fibre ratio is 8:1, adopts
The body design of calf artificial limb component, wherein leg artificial limb component and artificial limb for foot connecting portion is carried out with three-dimensional four-way fabric construction
Position uses the composite construction of embedded metal reinforcement strengthening, and this connecting portion uses three-dimensional five to be combined to fabric construction, 3 D weaving
Material leg artificial limb precast body and embedded metal reinforcement connector combined knitting use special fiber secondary at thickness direction after completing
Paving stitches strengthening, and the paving seam proportion of fibers that loop bonding reinforcing fiber selects T700 carbon fiber, secondary paving loop bonding to knit used by strengthening accounts for leg vacation
The 5% of limb parts three dimensional fabric precast body proportion of fibers.Leg artificial limb and the connection of artificial limb for foot, use the metal being embedded in strengthen
Part has been bolted.Bolt specification used is adjusted flexibly according to the size and shape specification of human body.
3rd, use vacuum to import the composite molding technique with rapid thermosetting combination, be directed to above 3 D stereo braiding artificial limb
The precast body of component, using thermosetting phenolic resin adhesive is matrix, uses VARI vacuum introducing technology to realize resin adhesive liquid
Assorted fibre stereochemical structure is carried out rapid impregnation, and curing process is carried out in large-scale baking oven, and whole solidification process keeps vacuum
System works continuously, and vacuum is maintained at 0.1MPa.Prosthetic components after impregnating resin solidifies 3 hours aftershapings in 78 DEG C, contains
Glue amount is maintained at 45%.Utilize the prosthetic product that above example is processed, compare and comparative example 4, improve 70% its service life
Above, artificial limb component is enhanced about more than once in intensity raising more than 70% and the rigidity of thickness direction.
Comparative example 4: the difference with embodiment 4 is, T800 only selected by the fiber of (1) artificial limb for foot 3 D stereo braiding precast body
Carbon fiber；(2) M40J carbon fiber only selected by the fiber of leg artificial limb 3 D stereo braiding precast body, other and embodiment 4
Identical, the dimensions finally preparing artificial limb is identical with embodiment 4.
Conclusion: when selecting inappropriate fiber to prepare 3 D stereo braiding foot and leg artificial limb, the prosthetic product prepared
Mechanical property and the life-span not as test effect of the present utility model good.
Embodiment 5
A kind of D braided composites artificial limb, including D braided composites artificial limb for foot 1 and D braided composites
Below-knee prosthesis 5；
As it is shown in figure 1, the foot that described D braided composites artificial limb for foot 1 is made up of the fiber that prior art is conventional
Artificial limb 3 D stereo weaves precast body (those skilled in the art can conventional prepare), weaves in advance along described artificial limb for foot 3 D stereo
Body thickness direction processed carries out structure that is that paving seam is formed and that be made up of and thermosetting resin three's composite molding paving seam fiber；Institute
Stating artificial limb for foot is inner hollow the foot structure with tiptoe, sole, heel and ankle, wherein, at described sole
3 D stereo braiding precast body in be provided with two-dimension laminate fabric mold composite reinforcement 3,3 D stereo at described heel
Being provided with the first metal reinforcements 2 in braiding precast body, the 3 D stereo braiding at the ankle being connected with described leg artificial limb is prefabricated
Internal it is provided with the second metal reinforcements 4；
As in figure 2 it is shown, the leg that described D braided composites below-knee prosthesis 5 is made up of the fiber that prior art is conventional
Artificial limb 3 D stereo weaves precast body (those skilled in the art can conventional prepare), weaves in advance along described leg artificial limb 3 D stereo
Body thickness direction processed carries out structure that is that paving seam is formed and that be made up of and thermosetting resin three's composite molding paving seam fiber；Institute
State the structure that below-knee prosthesis 5 is inner hollow and hollow cross-section is ellipse, the leg artificial limb being connected with described ankle
It is provided with the 3rd metal reinforcements 6 in the 3 D stereo braiding precast body at place.
Claims (5)
1. a D braided composites artificial limb, including D braided composites artificial limb for foot and D braided composites leg artificial limb, is characterized in that:
Described artificial limb for foot is inner hollow the foot structure with tiptoe, sole, heel and ankle, wherein, described sole is provided with two-dimension laminate fabric and molds composite reinforcement, and described heel and the ankle being connected with described leg artificial limb are equipped with metal reinforcements；
Described leg artificial limb is inner hollow and hollow cross-section is oval structure, and the leg artificial limb being connected with described ankle is provided with metal reinforcements.
2. artificial limb as claimed in claim 1, it is characterized in that: described D braided composites artificial limb for foot is to be woven precast body, the first paving crack structure and thermosetting resin composite molding by the first 3 D stereo, and described first paving crack structure is that paving seam fiber weaves, along described first 3 D stereo, the structure that the thickness direction paving seam of precast body is formed.
3. artificial limb as claimed in claim 1, it is characterized in that: described D braided composites leg artificial limb is to be woven precast body, the second paving crack structure and thermosetting resin composite molding by the second 3 D stereo, and described second paving crack structure is that paving seam fiber weaves, along described second 3 D stereo, the structure that the thickness direction paving seam of precast body is formed.
4. artificial limb as claimed in claim 2 or claim 3, is characterized in that: described paving seam fiber selects any one or more in carbon fiber T300, T700 or T800 to mix use.
5. artificial limb as claimed in claim 2, is characterized in that: described thermosetting resin be epoxy resin, phenolic resin, unsaturated polyester resin any one.
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| CN201620177814.7U CN205494477U (en) | 2016-03-09 | 2016-03-09 | Three -dimensional braiding combined material artificial limb |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108904878A (en) * | 2018-06-22 | 2018-11-30 | 朱波 | A kind of preparation and its structure of thermosetting property carbon fibre composite artificial limb |
| CN109199652A (en) * | 2018-09-30 | 2019-01-15 | 乐清市智能装备与制造研究院 | A kind of continuous carbon fibre intelligent artificial limb |
| CN110680559A (en) * | 2019-09-27 | 2020-01-14 | 长沙晟天新材料有限公司 | Chest lock integrated piece and preparation method thereof |
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2016
- 2016-03-09 CN CN201620177814.7U patent/CN205494477U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108904878A (en) * | 2018-06-22 | 2018-11-30 | 朱波 | A kind of preparation and its structure of thermosetting property carbon fibre composite artificial limb |
| CN108904878B (en) * | 2018-06-22 | 2022-01-07 | 朱波 | Preparation and structure of thermosetting carbon fiber composite artificial limb |
| CN109199652A (en) * | 2018-09-30 | 2019-01-15 | 乐清市智能装备与制造研究院 | A kind of continuous carbon fibre intelligent artificial limb |
| CN109199652B (en) * | 2018-09-30 | 2024-02-13 | 乐清市智能装备与制造研究院 | Continuous carbon fiber intelligent artificial limb |
| CN110680559A (en) * | 2019-09-27 | 2020-01-14 | 长沙晟天新材料有限公司 | Chest lock integrated piece and preparation method thereof |
| CN110680559B (en) * | 2019-09-27 | 2022-02-15 | 长沙晟天新材料有限公司 | Chest lock integrated piece and preparation method thereof |
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