CN104294484B - A kind of retainer for electronic sewing machine and processing method thereof - Google Patents
A kind of retainer for electronic sewing machine and processing method thereof Download PDFInfo
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- CN104294484B CN104294484B CN201410453468.6A CN201410453468A CN104294484B CN 104294484 B CN104294484 B CN 104294484B CN 201410453468 A CN201410453468 A CN 201410453468A CN 104294484 B CN104294484 B CN 104294484B
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- retainer
- installation portion
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- alloy
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/02—Alloys based on aluminium with silicon as the next major constituent
Abstract
The present invention relates to a kind of retainer for electronic sewing machine and processing method thereof, belong to sewing machine technique field. Described retainer, comprises support body, is surrounded and is formed by the first installation portion being connected as a single entity, the second installation portion and two connecting portions, and wherein two connecting portions are symmetricly set between two installation portions that be arranged in parallel; The aluminium alloy of the following component of described retainer (mass percent) makes: Si6.7-7.8%, Mg0.3-0.9%, Cu0.1-2.0%, Fe0.08-0.2%, Mn0.1-0.2%, Zn0.04-0.1%, Sr≤0.02%, Sb0.1-0.12%, Ti0.13-0.17%, V≤0.03%, surplus are aluminium and inevitable impurity, and specifically disclose its processing method. Production technology of the present invention is simple, and the retainer that obtains is simple in structure, practical, good combination property.
Description
Technical field
The invention belongs to sewing machine technique field, particularly a kind of for electronic sewing machineRetainer and processing method thereof.
Background technology
Sewing machine is comparatively common in daily life, and it is that one is sewed with one or moreLine forms one or more stitchings on sewing, makes one or more layers sewing interweave or stitchMachine altogether. Sewing function is made the fabrics such as cotton, fiber crops, silk, hair, staple fibreWith the goods such as leather, plastics, paper, the stitching neat appearance of stitching out, smooth firmly,Sewing velocity is fast, easy to use.
Along with the development of productive life, sewing machine is also constantly towards more convenient, more intelligenceCan, future development more attractive in appearance, from old-fashioned sewing machine to electronic sewing machine, sewing machine existsConstantly development, old-fashioned sewing machine and electric sewer are all to come by foot controllerControl, sewing velocity is also to regulate according to foot-operated speed, and this class sewingMachine can not be controlled the stop place of eedle, and stitching is all determined by cam, and electronics seamThe machine of threading is by electronic program control sewing speed and needle tracking, supports manual operation mode (alsoCan select pedal operation to control), compared with electric sewing machine, advantage is as follows:1) support two kinds of operator schemes: 2) manual and pedal; 3) speed control, is applicable toBeginner uses; 4) pin position when sewing machine stops is fixed as pin position or lower pin position;Needle tracking is more, and function is more complete, uses convenient.
About when traditional sewing machine tooth frame is worked, high and low position can not regulate, and can causeIn use procedure, produce the monolateral inclination of retainer, seriously can cause the local sideslip of cloth, leadCause the generation of inhomogeneous, the phenomenon such as have some setbacks of work feed, had a strong impact on the seam of sewing machineThe performance of threading.
Summary of the invention
The object of the invention is to have the problems referred to above for existing technology, proposed oneFor the retainer of electronic sewing machine, this retainer that is used for electronic sewing machine can stitch at electronicsThread and electronic sewing machine is carried out to cloth feeding mechanism in the use procedure of machine and carry out position adjustment, connectConnect stablely, durability is good.
Object of the present invention can realize by following technical proposal: a kind of for electronics seamThe thread retainer of machine, comprises support body, it is characterized in that, described support body by be connected as a single entityOne installation portion, the second installation portion and two connecting portions surround and form, the first installation portion and secondInstallation portion be arranged in parallel and the second installation portion length is greater than the first installation portion length, and two connectPortion is symmetricly set between the first installation portion and the second installation portion; Described retainer is by aluminium silicon magnesiumBe that Birmasil makes, described aluminium silicon magnesium is that Birmasil is by following mass percentOne-tenth be grouped into: Si:6.70%-7.80%, Mg:0.30%-0.90%, Cu:0.10％-2.00％、Fe：0.08％-0.20％、Mn：0.10％-0.20％、Zn：0.04％-0.10％、Sr：≤0.02％、Sb：0.10％-0.12％、Ti：0.13％-0.17％、V :≤0.03%, individual event impurity content≤0.03% in other impurity elements, impurity unitElement total content≤0.1%, surplus is aluminium and inevitable impurity.
The aluminium silicon magnesium used at above-mentioned retainer is in Birmasil, and Mg, Cu, Zn existSolid solubility in Al is larger, and they can not only dissolve in αsolidsolution to some extent, makeThe structure complicated of solid solution, and can in alloy, generate hardening constituent CuAl2、Mg2Si etc., play the effect of solution strengthening, thereby put forward heavy alloyed intensity. Zn elementExistence not only can improve dissolution velocity and the solubility of Cu, put forward heavy alloyed plasticity,And can form hardening constituent MgZn with Mg2Compound, significantly improves the tension of alloyIntensity and surrender hardness. But too much Zn can increase the stress corrosion cracking tendency of alloy,Therefore in above-mentioned retainer alloy used, the consumption of Zn element is controlled at 0.04%-0.10%.Si is in Birmasil, to form binary or polynary eutectic structure at aluminium silicon magnesium, withThe increase of Si content, in tissue, eutectiferous quantity increases gradually on the one hand, thereby carriesHeavy alloyed mobility; Can fall on the other hand low-alloyed linear shrinkage ratio, thereby reduceIts hot tendentiousness, makes alloy have more excellent comprehensive casting character. In addition, suitableIncrease Si content and also can carry heavy alloyed tensile strength and resistance to corrosion.
Fe in aluminium alloy generally with the compound of needle-like or sheet as FeAl3、Fe2Si2Al2Form exist, matrix is produced and isolates effect, easily produce stress and concentrate existingResemble and fall low-alloyed mechanical property as percentage elongation and plasticity. But in casting process,In order to reduce the adhesion of aluminium alloy to mould, in this alloy, need to exist a certain amount of iron unitElement. And in order effectively to suppress the adverse effect of Fe phase, in this alloy, addedThe Mn element of 0.10%-0.20% and 0.02%, with interior Sr element, utilizes Mn element to riseNeutralization, makes the needle-like Fe in alloy change into mutually Chinese character shape, herring-bone form and flowers shapeDeng Al-Si-Fe-Mn phase, thereby improve intensity, plasticity and the physical property of alloy,And eliminate fragility. Meanwhile, adding of Mn also can be put forward heavy alloyed intensity, with Al shapeBecome Al6Thereby Mn compound refinement recrystal grain. Although adding of Sr element can not changeBecome the Fe phase in alloy, but can make the form of the eutectic silicon in alloy by needle-likeBecome fibrous, thereby improve its mechanical property.
In addition, Ti element forms TiAl in alloy2Compound, becomes solid solution crystalTime non-spontaneous core, play the effect of refinement cast sturcture and seam organization, simultaneously TiAlso can improve the resistance to corrosion of aluminium alloy. And the interpolation of a small amount of V element not only canTo form VAl11Infusible compound, plays the effect of crystal grain thinning, also can play thinThe effect that change recrystallized structure, improves recrystallization temperature. In this alloy, addThe Sb element of 0.10%-0.12% is as alterant element, the metallographic structure that improves aluminium alloy withAnd toughness and compactness.
In sum, retainer of the present invention aluminium silicon magnesium used is Birmasil,Add on the basis of essential element Si and Mg, added Cu, Zn, Mn, Fe, Ti,The element such as V, Sb, by the reasonable compatibility of these compositions, the mechanics of the aluminium alloy obtainingPerformance, mechanical performance, corrosion resistance and good, can significantly improve service life of retainer.
At above-mentioned a kind of retainer for electronic sewing machine, first installation portion one end toProjection forms the first mounting lug, and the other end is fixed with the second mounting lug, firstThe middle part of installation portion raises up and forms boss and offer a location at the middle part of bossHole offers respectively in same axle center on the first mounting lug and the second mounting lugThe axial width of the axis hole on line and the first mounting lug is less than the axial of the second mounting lugWidth.
At above-mentioned a kind of retainer for electronic sewing machine, second installation portion one end toProjection forms first and connects lug, and first connect lug and the first mounting lug inSupport body the same side, the other end of the second installation portion has horizontally outward extended to form mount pad,Mount pad raises up and is formed with one second connection lug, the first connection lug and secondConnect lug offer respectively through hole on same axial line and first connect lug andThe axial width of the second connection lug is identical.
At above-mentioned a kind of retainer for electronic sewing machine, described connecting portion is by being linked asThe stripe board of one and arc composition, stripe board one end is fixed on the end of the first installation portionIn portion, arc one end is connected with stripe board, and other end arc outwardly convex is fixed onOn two installation portion ends.
Second object of the present invention is to provide a kind of processing method of above-mentioned retainer, instituteThe processing method of stating comprises the steps:
S1, batching: the aluminium silicon magnesium used according to above-mentioned retainer is the composition of BirmasilComposition and mass percent batching thereof;
S2, melting: first add the aluminium ingot of half, treat that aluminium ingot is complete at 730-780 DEG CAfter fusing, add magnesium, zinc, copper and remaining aluminium ingot, until magnesium, zinc, copper melts completely,In the time that temperature of aluminum liquid is 700-750 DEG C, add intermediate alloy and stir;
S3, die casting: by aluminium liquid after above-mentioned melting successively remove the gred, refinery by de-gassing,Aluminium hydraulic pressure is cast onto to temperature at 650-680 DEG C and be in the mold cavity of 240-300 DEG C, andPressurize 12-20s under the high pressure of 65-80MPa, moulding obtains retainer blank;
S4, heat treatment: above-mentioned retainer blank is heat-treated, and heat treatment comprises solid solutionProcess and Ageing Treatment, wherein the temperature of solution treatment is 530-560 DEG C, insulation 5-10Hour, the temperature of Ageing Treatment is 160-200 DEG C, insulation 5-8 hour, the cooling retainer that obtains.
Wherein, magnesium described in step S2 is pure magnesium, and zinc is pure zinc, and copper is cathode copper;Described intermediate alloy is that silicone content is that alusil alloy, the manganese content of 13-15% is 10-12%Alumal, the alfer that iron content is 7-10%, the aluminium strontium that content of strontium is 5-8%The aluminum-vanadium alloy that alloy, content of vanadium are 6-10%, the aluminum titanium alloy that Ti content is 7-10%,Antimony content is the aluminium-antimony alloy of 5-8%.
Refining temperature described in step S3 is 730-760 DEG C, and refining time is12-18min, refining agent is carbon trichloride.
Extrusion process described in step S3 is first to press slowly with the speed of 0.17-0.3m/sPenetrate, in the time that injection stroke is 380-420mm, then carry out soon with the speed of 2.0-3.0m/sInjection, thus aluminium hydraulic pressure is cast onto in mold cavity.
Described in step S4, heat treated object is for putting forward heavy alloyed mechanical property and corrosion-resistantPerformance, to improve the processing characteristicies such as its cutting ability and welding. Wherein, solution treatmentMain purpose is to improve plasticity and the toughness of alloy, for follow-up age-hardening processing is carried outPrepare. The temperature and time of solution treatment must strictly be controlled, and its main determining factor isIn alloy, separate out mutually and dissolution law and instructions for use solution treatment at 530-560 DEG CWithin 5-10 hour, can ensure that solute atoms is solidly soluted in solid solution to greatest extent, not again simultaneouslyCan make alloy melt, and then ensure mechanical property, the mechanical performance etc. of its finished product.And Ageing Treatment is a quite complicated age-hardening process, its essence is solute atomsSegregation forms the result of harden zone. Be aluminium alloy in the time quenching heating, due to cooling fast,The room forming in alloy has little time to shift out and is fixed in crystal, and most and soluteAtom combination. Because supersaturated solid solution will be changed to poised state by labile state,Thereby the existence in room has been accelerated the diffusion of solute atoms and has been accelerated the segregation of solute atoms.Ageing Treatment too high or too low for temperature, overlong time or too short, all can affect alloyStrengthening effect, therefore, in order to ensure strengthening effect, the present invention is by the temperature of retainer Ageing TreatmentDegree is controlled at 160-200 DEG C, and temperature retention time is 5-8 hour. Wherein, after solution treatment,Before Ageing Treatment, also comprise chilling Quenching Treatment, the water temperature of Quenching Treatment is 60-100 DEG C,Time is 3-5min.
Compared with prior art, the present invention be connected as a single entity for the retainer of electronic sewing machine theOne installation portion, the second installation portion and connecting portion composition, this structure had both facilitated processing and manufacturing,And intensity is strong, not cracky, simultaneously the first installation portion for being connected of cloth conveying teeth platform,Ensured that work feed is uniform and stable in the process of sewing machine work, the second installation portion is for levelThe connection of transmission shaft, has ensured the stability of the transmission of power to be symmetricly set on the first installationConnecting portion between portion and the second installation portion is mainly used in connecting the first installation portion and the second peaceDress portion, has ensured structural strength and the stability of the first installation portion and the second installation portion, structureSimply, practical. And aluminium silicon magnesium of the present invention is that Birmasil makes retainer,The retainer mechanical property, mechanical performance, the corrosive nature that obtain are all good, have extended making of retainerUse the life-span.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
In figure, 100, the first installation portion; 110, the first mounting lug; 120, boss;121, locating hole; 130, the second mounting lug; 200, connecting portion; 210, stripe board;220, arc; 300, the second installation portion; 310, first connects lug; 320,Two connect lug; 330, mount pad; 340, through hole.
Detailed description of the invention
Below specific embodiments of the invention by reference to the accompanying drawings, to technical side of the present inventionCase is further described, but the present invention is not limited to these embodiment.
As shown in Figure 1, a kind of retainer for electronic sewing machine, comprises support body, support bodyBy the first installation portion 100, the second installation portion 300 and two connecting portions 200 that are connected as a single entitySurround and form, the first installation portion 100 and the second installation portion 300 be arranged in parallel and the second peaceDress portion 300 length are greater than the first installation portion 100 length, and two connecting portions 200 are symmetrical arrangedBetween the first installation portion 100 and the second installation portion 300.
Preferably, connecting portion 200 is by the stripe board 210 being connected as a single entity and arc 220Composition, stripe board 210 one end are fixed on the end of the first installation portion 100, arc220 one end are connected with stripe board 210, and other end arc outwardly convex is fixed on the second peaceOn dress portion 300 ends, make the shape of whole retainer be sealing bridge type, expanded two connectionsSpace between portion 200, and sealing bridge-type structure is firm, has ensured that retainer is in motionIn process, can bear the impact again and again of cloth conveying teeth platform and horizontal transmission axle.
First installation portion 100 one end raise up and form the first mounting lug 110, anotherEnd is fixed with the second mounting lug 130, raises up at the middle part of the first installation portion 100Form boss 120 and offer a locating hole 121 at the middle part of boss 120, firstOn mounting lug 110 and the second mounting lug 130, offer respectively in same axial lineOn axis hole and the axial width of the first mounting lug 110 be less than the second mounting lug 130Axial width. The first mounting lug 110 on the first installation portion 100 and the second peaceIn the axis hole of dress lug 130, be equipped with a pivot pin, this pivot pin is for cloth conveying teeth platform and firstInstallation portion 100 hinged, adopts hinged setting, has ensured that cloth conveying teeth platform and first installsThe stability connecting between portion 100, has avoided cloth conveying teeth platform and the first installation portion 100 to existThe impact producing in use procedure and departing from, affects the normal use of sewing machine.
Further, in the process of the motion of electronic sewing machine, retainer and cloth conveying teeth platformCan produce and impact, the impact of retainer and the meeting of cloth conveying teeth platform can cause cloth conveying teeth platform and retainerDamage, thereby can cause the work feed of sewing machine inhomogeneous, affected the sewing of sewing machineEffect, for the stability that ensures that cloth conveying teeth platform is connected with retainer, at the middle part of gripper shoeRaise up and form boss 120 and offer a locating hole 121 at the middle part of boss 120,And on cloth conveying teeth platform, also there is corresponding locating piece to match.
Second installation portion 300 one end raise up and form the first connection lug 310, and theOne connection lug 310 and the first mounting lug 110 are in support body the same side, and second installsThe other end of portion 300 has horizontally outward extended to form mount pad 330, mount pad 330 toProjection is formed with one second and connects lug 320, the first connection lug 310 and secondThe through hole 340 and first that connection lug 320 offers respectively on same axial line connectsConnecing lug 310, be connected the axial width of lug 320 with second identical, the second installation portion 300Lower surface is a plane, plane and plane between the second installation portion 300 and sewing machine bodyContact, make sewing machine work process in, retainer contacts more with sewing machine bodyWhat add is level and smooth, avoided retainer in motion process in the time occurring to impact, retainer and sewingMachine body collides and causes badly damaged.
Further, be connected the axis hole of lug 320 with second at the first connection lug 310Inside also be equipped with bearing pin, this bearing pin is hinged for retainer and horizontal transmission axle, retainer withHorizontal transmission axle also can produce impact, the hinged guarantor of bearing pin in the process of the transmission of powerDemonstrate,prove between the two and in the process of impacting, between horizontal transmission axle and retainer, to have connected producingNormally, avoid impacting and caused the variation of retainer and horizontal transmission shaft position, thereby madeSewing machine can not turn round normally, and retainer and horizontal transmission axle is hinged simultaneously, makes bothBetween can be relative rotation form angle, the height of retainer and horizontal transmission axle can be enteredRow is adjusted to optimum operating position, increases work efficiency.
Wherein, described retainer is that Birmasil makes by aluminium silicon magnesium, described aluminium silicon magnesiumBe that Birmasil is grouped into by the one-tenth of following mass percent: Si:6.70%-7.80%,Mg：0.30％-0.90％、Cu：0.10％-2.00％、Fe：0.08％-0.20％、Mn：0.10％-0.20％、Zn：0.04％-0.10％、Sr：≤0.02％、Sb：0.10％-0.12％、Ti:0.13%-0.17%, V :≤0.03%, in other impurity elements, individual event impurity element containsAmount≤0.03%, impurity element total content≤0.1%, surplus is aluminium.
Table 1: embodiment 1-3 is for the preparation of constituent and the mass percent of retainer
Embodiment 1
Batching: the aluminium silicon magnesium used according to retainer described in table 1 embodiment 1 is Cast aluminium alloyThe constituent of gold and mass percent batching thereof;
Melting: first add the aluminium ingot of half, add after fusing completely at 730 DEG C until aluminium ingotMagnesium, zinc, copper and remaining aluminium ingot, until after magnesium, zinc, copper melts completely, in aluminium liquid temperatureWhen degree is 700 DEG C, then adds intermediate alloy and stir; Wherein magnesium is pure magnesium, and zinc isPure zinc, copper is cathode copper, intermediate alloy refer to silicone content be 13-15% alusil alloy,Manganese content is that the alumal of 10-12%, alfer, the strontium that iron content is 7-10% containAmount is that the al-sr alloy of 5-8%, aluminum-vanadium alloy, the Ti content that content of vanadium is 6-10% areThe aluminum titanium alloy of 7-10%, the aluminium-antimony alloy that antimony content is 5-8%;
Die casting: the aluminium liquid after melting is successively removed the gred and refinery by de-gassing, its refining temperatureBe 730 DEG C, refining time is 12min, and refining agent is carbon trichloride, at temperature of aluminum liquid isSpeed with 0.17m/s 650 DEG C time is first carried out slow shot, in the time that injection stroke is 380mm,Carry out fast shot with the speed of 2.0m/s again, thereby aluminium hydraulic pressure is cast onto and is preheated to 240 DEG CIn mold cavity, and under the high pressure of 65MPa pressurize 12s, moulding obtains retainer blank;
Heat treatment: above-mentioned retainer blank is carried out to solution treatment and Ageing Treatment, wherein solid solutionTreatment temperature is 530 DEG C, is incubated and after 6 hours, immediately retainer blank is quenched rapidly into 70 DEG CChilling 3min in water; Artificial aging treatment temperature is 170 DEG C, is incubated nature after 5 hoursCooling, obtain retainer.
Embodiment 2
Batching: the aluminium silicon magnesium used according to retainer described in table 1 embodiment 2 is cast aluminum-molykote composite materialThe constituent of alloy and mass percent batching thereof;
Melting: first add the aluminium ingot of half, add after fusing completely at 750 DEG C until aluminium ingotEnter magnesium, zinc, copper and remaining aluminium ingot, until after magnesium, zinc, copper melts completely, at aluminiumWhen liquid temp is 720 DEG C, then adds intermediate alloy and stir; Wherein magnesium is pure magnesium,Zinc is pure zinc, and copper is cathode copper, and intermediate alloy refers to that silicone content is that the aluminium silicon of 13-15% closesGold, alumal that manganese content is 10-12%, alfer that iron content is 7-10%,Content of strontium is the al-sr alloy of 5-8%, aluminum-vanadium alloy, the Ti content that content of vanadium is 6-10%For the aluminum titanium alloy of 7-10%, the aluminium-antimony alloy that antimony content is 5-8%;
Die casting: the aluminium liquid after melting is successively removed the gred and refinery by de-gassing, its refining temperatureDegree is 740 DEG C, and refining time is 15min, and refining agent is carbon trichloride, in aluminium liquid temperatureSpeed with 0.22m/s when degree is 670 DEG C is first carried out slow shot, when injection stroke isWhen 400mm, then carry out fast shot with the speed of 2.5m/s, thereby aluminium hydraulic pressure is cast onto in advanceHeat to the mold cavity of 270 DEG C, and under the high pressure of 72MPa pressurize 16s, mouldingObtain retainer blank;
Heat treatment: above-mentioned retainer blank is carried out to solution treatment and Ageing Treatment, Qi ZhongguMolten treatment temperature is 545 DEG C, is incubated and immediately retainer blank is quenched rapidly into 80 DEG C after 8 hoursWater in chilling 4min; Artificial aging treatment temperature is 185 DEG C, be incubated after 7 hours fromSo cooling, obtain retainer.
Embodiment 3
Batching: the aluminium silicon magnesium used according to retainer described in table 1 embodiment 3 is cast aluminum-molykote composite materialThe constituent of alloy and mass percent batching thereof;
Melting: first add the aluminium ingot of half, add after fusing completely at 780 DEG C until aluminium ingotEnter magnesium, zinc, copper and remaining aluminium ingot, until after magnesium, zinc, copper melts completely, at aluminiumWhen liquid temp is 750 DEG C, then adds intermediate alloy and stir; Wherein magnesium is pure magnesium,Zinc is pure zinc, and copper is cathode copper, and intermediate alloy refers to that silicone content is that the aluminium silicon of 13-15% closesGold, alumal that manganese content is 10-12%, alfer that iron content is 7-10%,Content of strontium is the al-sr alloy of 5-8%, aluminum-vanadium alloy, the Ti content that content of vanadium is 6-10%For the aluminum titanium alloy of 7-10%, the aluminium-antimony alloy that antimony content is 5-8%;
Die casting: the aluminium liquid after melting is successively removed the gred and refinery by de-gassing, its refining temperatureDegree is 760 DEG C, and refining time is 18min, and refining agent is carbon trichloride, in aluminium liquid temperatureSpeed with 0.3m/s when degree is 680 DEG C is first carried out slow shot, when injection stroke isWhen 420mm, then carry out fast shot with the speed of 3.0m/s, thereby aluminium hydraulic pressure is cast onto in advanceHeat to the mold cavity of 240-300 DEG C, and under the high pressure of 80MPa pressurize 20s,Moulding obtains retainer blank;
Heat treatment: above-mentioned retainer blank is carried out to solution treatment and Ageing Treatment, Qi ZhongguMolten treatment temperature is 560 DEG C, be incubated after 10 hours, immediately retainer blank is quenched rapidly intoChilling 5min in the water of 90 DEG C; Artificial aging treatment temperature is 200 DEG C, is incubated 8 hoursRear naturally cooling, obtain retainer.
The retainer making in embodiment 1-3 is carried out to performance test, and test result is as table 2Show.
The performance test results of the retainer that table 2: embodiment of the present invention 1-3 makes
Comparative example is the retainer that common ZL 101 alloy makes.
From table 1 and table 2, it is that Birmasil makes that retainer of the present invention adopts aluminium silicon magnesium,By the reasonable compatibility between each constituent and the reasonably setting of technological parameter, the tooth makingThe good mechanical property such as tensile strength, hardness of frame, corrosion resistance and good, has extended retainerService life.
Specific embodiment described herein is only to the theory for example of the present invention's spiritBright. Those skilled in the art can be to described specific embodimentMake various amendments or supplement or adopt similar mode to substitute, but can't depart fromSpirit of the present invention or surmount the defined scope of appended claims.
Claims (7)
1. the retainer for electronic sewing machine, comprise support body, it is characterized in that, described support body is by the first installation portion being connected as a single entity, the second installation portion and two connecting portions surround and form, the first installation portion and the second installation portion be arranged in parallel and the second installation portion length is greater than the first installation portion length, two connecting portions are symmetricly set between the first installation portion and the second installation portion, first installation portion one end raises up and forms the first mounting lug, the other end is fixed with the second mounting lug, raise up at the middle part of the first installation portion and form boss and offer a locating hole at the middle part of boss, the axial width that offers respectively axis hole on same axial line and the first mounting lug on the first mounting lug and the second mounting lug is less than the axial width of the second mounting lug, described retainer is that Birmasil makes by aluminium silicon magnesium, described aluminium silicon magnesium is that Birmasil is grouped into by the one-tenth of following mass percent: Si:6.70%-7.80%, Mg:0.30%-0.90%, Cu:0.10%-2.00%, Fe:0.08%-0.20%, Mn:0.10%-0.20%, Zn:0.04%-0.10%, Sr :≤0.02%, Sb:0.10%-0.12%, Ti:0.13%-0.17%, V :≤0.03%, individual event impurity content≤0.03% in other impurity element, impurity element total content≤0.1%, surplus is aluminium and inevitable impurity.
2. the retainer for electronic sewing machine according to claim 1, it is characterized in that, second installation portion one end raises up and forms the first connection lug, and the first connection lug and the first mounting lug are in support body the same side, the other end of the second installation portion has horizontally outward extended to form mount pad, mount pad raises up and is formed with one second and connects lug, is connected lug offers respectively through hole on same axial line and the first connection lug be connected the axial width of lug with second identical at the first connection lug with second.
3. the retainer for electronic sewing machine according to claim 2, it is characterized in that, described connecting portion is made up of the stripe board being connected as a single entity and arc, stripe board one end is fixed on the end of the first installation portion, arc one end is connected with stripe board, and other end arc outwardly convex is fixed on the second installation portion end.
4. for a processing method for the retainer of electronic sewing machine, it is characterized in that, described processing method comprises the steps:
S1, batching: be constituent and the mass percent batching thereof of Birmasil according to the aluminium silicon magnesium used of retainer described in claim 1;
S2, melting: first add the aluminium ingot of half, at 730-780 DEG C, after fusing, add magnesium, zinc, copper and remaining aluminium ingot until aluminium ingot completely, until magnesium, zinc, copper melt completely, in the time that temperature of aluminum liquid is 700-750 DEG C, add intermediate alloy and stir;
S3, die casting: by aluminium liquid after above-mentioned melting successively remove the gred, refinery by de-gassing, aluminium hydraulic pressure is cast onto to temperature at 650-680 DEG C and is in the mold cavity of 240-300 DEG C, and under the high pressure of 65-80MPa pressurize 12-20s, moulding obtains retainer blank;
S4, heat treatment: above-mentioned retainer blank is heat-treated, and heat treatment comprises solution treatment and Ageing Treatment, wherein the temperature of solution treatment is 530-560 DEG C, insulation 5-10 hour, the temperature of Ageing Treatment is 160-200 DEG C, insulation 5-8 hour, the cooling retainer that obtains.
5. according to claim 4 for the processing method of the retainer of electronic sewing machine, it is characterized in that, magnesium described in step S2 is pure magnesium, and zinc is pure zinc, and copper is cathode copper; Described intermediate alloy is that silicone content is the alusil alloy of 13-15%, the alumal that manganese content is 10-12%, the alfer that iron content is 7-10%, the al-sr alloy that content of strontium is 5-8%, the aluminum-vanadium alloy that content of vanadium is 6-10%, the aluminum titanium alloy that Ti content is 7-10%, the aluminium-antimony alloy that antimony content is 5-8%.
6. according to claim 4 for the processing method of the retainer of electronic sewing machine, it is characterized in that, the refining temperature described in step S3 is 730-760 DEG C, and refining time is 12-18min, and refining agent is carbon trichloride.
7. according to claim 4 for the processing method of the retainer of electronic sewing machine, it is characterized in that, after the solution treatment described in step S4, also comprise chilling Quenching Treatment before Ageing Treatment, the water temperature of Quenching Treatment is 60-100 DEG C, and the time is 3-5min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410453468.6A CN104294484B (en) | 2014-09-05 | 2014-09-05 | A kind of retainer for electronic sewing machine and processing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410453468.6A CN104294484B (en) | 2014-09-05 | 2014-09-05 | A kind of retainer for electronic sewing machine and processing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN104294484A CN104294484A (en) | 2015-01-21 |
| CN104294484B true CN104294484B (en) | 2016-05-04 |
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| CN106498224A (en) * | 2016-11-28 | 2017-03-15 | 宁波瑞铭机械有限公司 | A kind of cloth pressing foot |
| CN114058914B (en) * | 2021-11-20 | 2022-06-17 | 东莞市青鸟金属材料有限公司 | Aluminum alloy material and preparation method thereof |
| CN115044807A (en) * | 2022-05-11 | 2022-09-13 | 玉环凯凌机械集团股份有限公司 | Aircraft canopy suspension device and preparation method |
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| JP2002346260A (en) * | 2001-03-23 | 2002-12-03 | Juki Corp | Device for feeding cloth for sewing machine |
| CN203333975U (en) * | 2013-07-18 | 2013-12-11 | 浙江恒强针车集团有限公司 | Cloth feeding regulating mechanism of sewing machine |
| CN103695732B (en) * | 2013-11-26 | 2015-11-18 | 宁波瑞铭机械有限公司 | A kind of linking sewing machine and preparation method thereof |
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