CN104294483B - A kind of work feed assembly and preparation method thereof - Google Patents
A kind of work feed assembly and preparation method thereof Download PDFInfo
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- CN104294483B CN104294483B CN201410452691.9A CN201410452691A CN104294483B CN 104294483 B CN104294483 B CN 104294483B CN 201410452691 A CN201410452691 A CN 201410452691A CN 104294483 B CN104294483 B CN 104294483B
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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
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
- C22C21/08—Alloys based on aluminium with magnesium as the next major constituent with silicon
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2209/00—Use of special materials
- D05D2209/12—Metals or metal coatings
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- Mechanical Engineering (AREA)
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- Textile Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The present invention relates to a kind of work feed assembly for sewing machine and preparation method thereof, belong to field of mechanical technique. Described work feed assembly, comprise tooth platform and cloth conveying teeth, tooth platform comprises the support with a level table, one side has lug, and opposite side is installed with two hinge ears, and cloth conveying teeth comprises braces, on braces, be provided with some adjustment holes, on braces, be provided with two dual pinion racks, and be connected by a dowel, surround and form a square opening with braces; Work feed assembly is made by the aluminium alloy of following component (mass percent): Si0.2-0.4%, Mg0.3-0.5%, Cu0.15-0.3%, Fe0.8-1.0%, Mn0.15-0.3%, Zn0.1-0.25%, Cr0.02-0.1%, Ti0.15-0.3%, Sc0.02-0.03%, surplus are Al, and disclose its preparation method. Work feed assembly good combination property of the present invention, work feed efficiency are high.
Description
Technical field
The invention belongs to field of mechanical technique, relate to a kind of work feed assembly, particularly a kind ofFor the work feed assembly of sewing machine.
Background technology
Sewing machine is by one or more sewing thread, one or more layers sewing is interweaved or stitchedMachine altogether, is made up of support, transmission device and cloth feeding mechanism etc. Wherein,Cloth feeding mechanism is a part the most key on sewing machine, cloth feeding mechanism generally comprise retainer,Cloth conveying teeth etc., the motion of actuator drives retainer, further drives cloth conveying teeth to move up and down,Thereby reach the function of work feed.
Cloth conveying teeth form of the prior art has vertical setting and horizontally disposed, vertically establishesIt is equally distributed that its teeth of the cloth conveying teeth of putting are still level, and the position that takes up room is large; And waterIt is one-sided fixing that the flat cloth conveying teeth arranging mostly is, and may occur the phenomenon of unbalance stress, leadsCausing work feed process is difficult to carry out. In addition, cloth conveying teeth also has and is directly connected with retainerForm, this design there will be cloth conveying teeth to use consumption larger, is not easy to change, and sendThe material that cloth assembly is selected is comparatively common, and wearability is not good, and anticorrosive property is bad, usesLife-span is shorter.
In sum, for solving the deficiency on existing work feed modular construction, need to design oneKind compact conformation, the work feed assembly that result of use is good, work feed efficiency is high.
Summary of the invention
The object of the invention is to have the problems referred to above for existing technology, proposed oneCompact conformation, result of use is good, work feed efficiency is high, the work feed assembly of long service life.
Object of the present invention can realize by following technical proposal: a kind of work feed assembly,Comprise tooth platform and cloth conveying teeth, described tooth platform comprises the support with a level table,One epitaxial lateral overgrowth of frame is stretched formation lug, and opposite side is installed with the two hinge ears that be arranged in parallel,On each hinge ear, all offer axis hole, on level table, offer some the first screwed holesAnd one of them first screwed hole is located in lug middle part, and described cloth conveying teeth comprises braces,On braces, offer and described the first screwed hole some adjustment holes one to one, described inBraces is arranged on level table by screw, on the end face at braces away from support, is provided withTwo dual pinion racks that be arranged in parallel, between two dual pinion racks, be provided be uniformly distributed andThe some monodentate tooth bars that be arranged in parallel, described two dual pinion racks stretch out respectively and lead toCross a dowel and be connected, described braces, dowel and two dual pinion racks surround formationOne square opening, wherein, described work feed assembly material is aluminium alloy, by weight percentageCalculate, described aluminium alloy comprises following component: Si:0.20-0.40%, Mg:0.30-0.50%,Cu：0.15-0.30％，Fe：0.80-1.00％，Mn：0.15-0.30％，Zn：0.10-0.25％，Cr:0.02-0.10%, Ti:0.15-0.30%, Sc:0.02-0.03%, surplus is AlAnd inevitable impurity.
Work feed assembly on sewing machine of the present invention adopts the rational aluminum alloy material system of compatibility, in aluminium alloy, component is the principal element that affects aluminium alloy electric conductivity, its shadowRing and depend on the addition of element and the form of existence. Various elements in aluminium alloy,Except existing with simple substance on a small quantity, all will enter the lattice of aluminium or form various types of compound,Affect phasor, elementary organization, process of setting, processing performance of aluminium alloy etc. In addition closeGold also can affect grain size, increase grain boundary area and form impurity etc., thereby each chemistry is firstElement can show by the tissue of final formation the various performances of aluminium alloy.
In work feed assembly aluminium alloy of the present invention, also contain the scandium (Sc) of 0.01-0.02%, a sideFace Sc and Ti form Al3(Sc, Ti) compound particle, nascent Al3(Sc，Ti)Compound particle alloy crystal grain has extremely strong refining effect, secondary Al3(Sc, Ti) matterPut pinning dislocation and sub boundary consumingly, effectively suppress the recrystallization of alloy, this work feedAssembly aluminium alloy adopts Sc and Ti combined microalloying to have refined crystalline strengthening, sub-knot simultaneouslyStructure strengthening and directly precipitation strength effect. On the other hand, Sc and Mn combined microalloyingEliminate to a certain extent the arborescent structure in alloy, also there is substructure strengthening and straightConnect precipitation strength effect.
And the reasonable compatibility of silicon (Si) and magnesium (Mg) makes aluminium alloy have thermal expansion systemThe advantages such as number is little, heat conductivity good, hot cracking tendency is little, good fluidity, make of the present inventionWork feed assembly aluminium alloy is obviously different from other Birmasil or wrought aluminium alloy. In additionThe interpolation of element silicon can solve the phenomenon that aluminium copper and almag can not solution strengthening.And the general content that adopts Si is controlled at 0.4-0.8% in prior art, adopt this contentAlthough element silicon can improve tensile strength, hardness, the machinability of alloy to a certain extent,But in the work feed assembly aluminium alloy that contains Sc, Si can form compound with Sc(Sc2AlSi2), change the resolution characteristic containing Sc aluminum alloy solution body simultaneously, reduce scandium and existStrengthening effect when supersaturated solid solution decomposes in aluminium alloy, reduces containing scandium-aluminum alloy halfThe recrystallization temperature of product, and silicon content is excessive, exceedes eutectic composition, and impurity is many againTime, there will be the hard point of free silica, make machining difficulty, molten to foundry goods crucibleErosion effect is serious. Therefore, in work feed assembly aluminium alloy, Si is strictly controlled at0.20-0.40％。
Magnesium elements is the essential element in aluminium alloy, forms hardening constituent MgSi with Si2, existingHave in technology and generally Mg content is controlled to 0.90-1.0%, adopt the magnesium elements of this contentAlthough can put forward heavy alloyed corrosion resistance, excessive MgSi2Can make foundry goods become fragile, shadowRing casting character, affect intensity of aluminum alloy and plasticity, therefore at work feed assembly of the present inventionThe magnesium that only adds 0.30-0.50% in aluminium alloy, had both ensured the corrosion resistance that aluminium alloy is good,Further put forward again heavy alloyed intensity and yield limit.
Iron (Fe) and titanium (Ti) be as transition element, its under equilibrium condition almostNot solid solution is in aluminium, and exists with the intermetallic compound of high-temperature stable high elastic modulus disperse,From strengthening matrix and crystal boundary, make aluminium alloy there is good high temperature comprehensive mechanical property.Iron, titanium elements content that work feed assembly aluminium alloy of the present invention is chosen need Rational choice, thoughSo can obviously improve the recrystallization temperature of Zn, slow down the process of recrystallization, solid solution is in zinc,But can not infinitely expand its content, can generate because iron content exceedes the Fe of solid solution limitDregs, with FeAl3Crystallize out, work feed assembly is become fragile, crack machinedDegradation. If but in work feed assembly aluminium alloy of the present invention iron content lower than0.70% there will be the phenomenon that is difficult for the demoulding, in the time that iron content is below 0.65% particularlyStrongly. After exceeding 0.70%, mold sticking just alleviates to some extent, and therefore, the present invention sendIn cloth assembly aluminium alloy, Fe content is further preferred, be controlled at 0.80-1.00%. And titaniumElement need to coordinate with ferro element just can reach the effect that strengthens aluminium alloy high-temperature behavior.
Copper (Cu) is the same with aluminium element has face-centred cubic structure, and the fusing point of copper is1084.5 DEG C. The lattice paprmeter of copper and aluminium differs greatly, but copper can be dissolved in aluminium, therefore addsEnter after copper, make the dot matrix of aluminium that very large distortion occur, produce strengthening very significantly and doWith, significantly improve mechanical performance, the cutting ability of alloy, but carrying along with copper contentHeight, corrosion resistance and the plasticity of alloy acutely decline, and hot cracking tendency increases, and excessive copperElement can affect the strengthening effect of scandium. Therefore the addition of copper is controlled at0.10-0.30％。
Manganese (Mn) is the important element of aluminium alloy, can reduce on the one hand the adverse effect of iron,Can make the sheet or the acicular constituent that in aluminium alloy, are formed from iron become fine and closely woven texture,Therefore the proportioning of ferro element and manganese element is also to choose the important references ginseng of manganese element contentNumber; Adding on the other hand manganese element can refinement material structure, improves recrystallization temperature,Strengthen the heat resistance of aluminium alloy. Although manganese and scandium are inoperative, do not form intermetallicThing, but the solubility that excessive manganese can reduce Sc can reduce the shape of intermetallic compoundBecome, in general aluminium alloy, allow the manganese below 0.5% to exist, but contain the work feed assembly of scandiumIn aluminium alloy, need the excellent content by Mn to be controlled at 0.15-0.30%, just can avoid MnOn the impact of Sc.
Add separately zinc (Zn) very limited to the raising of intensity of aluminum alloy, also deposit simultaneouslyIn stress corrosion cracking tendency, but zinc element and magnesium elements can form hardening constituentMg/Zn2, can obviously put forward heavy alloyed tensile strength and yield strength. But excessiveZn can reduce anti-corrosive properties, and the zinc constituent content that the present invention chooses is 0.10-0.25%.
Chromium (Cr) forms (CrFe) Al in aluminium7(CrMn) Al12Deng intermetallic compound,Hinder the nucleation and growth process of recrystallization, energy reinforced alloys, can also improve alloy toughnessWith reduction stress corrosion opening cracking maleate sensitivity, still chromatize in the aluminium alloy that contains scandium, needsThe content of chromium to be strictly controlled, once chromium content is excessive a little, the strengthening of Sc will be reducedEffect and anti-recrystallizing effect, and excessive chromium can fall low-alloyed plasticity, strengthen layeringCorrosion tendency, therefore, comprehensive each factor adds in work feed assembly of the present inventionThe chromium of 0.02-0.10% can further be strengthened in not affecting other element invigoration effectsAlloy, puies forward heavy alloyed toughness and corrosion resistance.
In above-mentioned a kind of work feed assembly, as preferably, described aluminium alloy by belowThe one-tenth of percentage by weight is grouped into: Si:0.30%, and Mg:0.40%, Cu:0.20%,Fe：0.90％，Mn：0.25％，Zn：0.20％，Cr：0.06％，Ti：0.20％，Sc:0.025%, surplus is Al and inevitable impurity.
In above-mentioned a kind of work feed assembly, as preferably, described aluminium alloy by belowThe one-tenth of percentage by weight is grouped into: Si:0.20%, and Mg:0.50%, Cu:0.15%,Fe：1.00％，Mn：0.15％，Zn：0.25％，Cr：0.02％，Ti：0.30％，Sc:0.02%, surplus is Al and inevitable impurity.
In above-mentioned a kind of work feed assembly, as preferably, described aluminium alloy by belowThe one-tenth of percentage by weight is grouped into: Si:0.40%, and Mg:0.30%, Cu:0.30%,Fe：0.80％，Mn：0.30％，Zn：0.10％，Cr：0.10％，Ti：0.15％，Sc:0.03%, surplus is Al and inevitable impurity.
In above-mentioned a kind of work feed assembly, described dowel is provided with linear distributingSome teeth.
In above-mentioned a kind of work feed assembly, on each hinge ear, all offer vertical with axis holeAnd the second screwed hole communicating.
In above-mentioned a kind of work feed assembly, on the sidewall of described support, offer and be positioned at twoFirst " U " shape groove, second " U " shape groove between hinge ear, described first " U " shape grooveOppositely arrange with the opening of second " U " shape groove, in described first " U " shape groove, offerRun through the first through hole of support, on the sidewall of described support near lug, offer two parallelArrange the second through hole, one of them second through hole through support and with second " U " shape grooveBe connected.
Another object of the present invention is to provide a kind of preparation side of above-mentioned work feed assemblyMethod, described preparation method comprises the steps:
S1, select aluminum alloy materials by the constituent of above-mentioned percentage by weight, aluminium is closedGold copper-base alloy melts, and obtains Al-alloy metal liquid;
S2, Al-alloy metal liquid is stirred, then carry out refinery by de-gassing, scarfing cinder placeReason;
S3, above-mentioned Al-alloy metal liquid after treatment is cast as to work feed assembly blank;
S4, work feed assembly blank heat-treated to get final product to obtain final work feed assembly finished product,Heat treatment comprises solution treatment and natural aging treatment, and wherein solid solution temperature is540-560 DEG C, insulation 4-6h, the Ageing Treatment time is 24-30h.
In the preparation method of above-mentioned work feed assembly, by degassing process with eliminate alloy castMake the harmful effect of air-breathing in process and coarse grains. The present invention is simultaneously also by adding oxygenAgent is removed residue to reach, reduces aluminium alloy pore, is improved aluminium alloy toughness and densificationThe effect of property. Preferably, the present invention carries out refining by passing into nitrogen rotation degasification.
Solution treatment can improve plasticity and the toughness of alloy, and timeliness place after solution treatmentReason can be eliminated internal stress, stabilizing tissue and the size of cast member, improves mechanical performance.
As preferably, in step S4, solid solution temperature is 545-555 DEG C, insulation 4-5h,The Ageing Treatment time is 24-26h.
Compared with prior art, compact conformation of the present invention, work feed efficiency are high; Adopt tooth platformWith the combining form of cloth conveying teeth, the structure of cloth conveying teeth is had to certain protective role, extend it and makeWith the life-span; Cloth conveying teeth stiff end is positioned on the straight line at feed direction place, ensures cloth conveying teethBoth sides are stressed evenly, and cloth is carried steadily. In addition, work feed assembly of the present invention is selected compatibilityReasonably aluminium alloy is made, by the synergy between each element, and choose reasonablePreparation method, significantly improves mechanical performance, the especially anti-wear performance, anti-of work feed assemblyCorrosivity, and then service life and the operating efficiency of raising work feed assembly.
Brief description of the drawings
Fig. 1 is the structural representation of a preferred embodiment of the present invention.
Fig. 2 is the structural representation at another visual angle of Fig. 1.
Fig. 3 is the structural representation of tooth platform in a preferred embodiment of the present invention.
Fig. 4 is the structural representation at another visual angle of Fig. 3.
Fig. 5 is the partial sectional view of tooth platform in a preferred embodiment of the present invention.
In figure, 10, tooth platform; 11, support; 12, lug; 13, hinge ear; 131, axleHole; 132, the second screwed hole; 14, level table; 141, the first screwed hole; 15,First " U " shape groove; 151, the first through hole; 16, second " U " shape groove; 161,Two through holes; 20, cloth conveying teeth; 21, braces; 211, adjustment hole; 22, monodentate tooth bar;23, dual pinion rack; 24, dowel; 241, teeth; 25, square opening.
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 Figures 1 to 5, this work feed assembly comprises tooth platform 10 and cloth conveying teeth 20,Tooth platform 10 comprises the support 11 with a level table 14, outside a side direction of support 11Extend to form lug 12, opposite side is installed with the two hinge ears 13 that be arranged in parallel, each hinge earOn 13, all offer axis hole 131, on level table 14, offer multiple the first screwed holes141 and one of them first screwed hole 141 be located in lug 12 middle parts, cloth conveying teeth 20Comprise braces 21, on braces 21, offer with above-mentioned the first screwed hole 141 1 a pair ofMultiple adjustment holes 211 of answering, braces 21 is arranged on level table 14 by screw,On end face at braces 21 away from support 11, be provided with two dual pinion racks that be arranged in parallel23, between two dual pinion racks 23, be provided with the multiple monodentates that are uniformly distributed and be arranged in parallel22, two dual pinion racks 23 of tooth bar stretch out respectively and pass through a dowel 24 and are connected,Braces 21, dowel 24 and two dual pinion racks 23 surround and form a square opening 25.
The work feed assembly that the invention provides a kind of use in sewing machine, comprises tooth platform 10 and work feedTooth 20, tooth platform 10 has a level table 14, is convenient to cloth conveying teeth 20 and is arranged on tooth platformOn 10, on level table 14, offer multiple the first screwed holes 141, on braces 21, offerWith the first screwed hole 141 multiple adjustment holes 211 one to one, facilitate screw to pass tuneKnothole 211 is threaded in the first screwed hole 141. In addition, the setting of adjustment hole 211 alsoThe relative position that can be used to regulate cloth conveying teeth 20 and tooth platform 10, finds suitable position rightAfter be screwed.
The setting of two hinge ears 13 is for tooth platform 10 is arranged on to retainer (not shown)On a booster action is provided, offering of axis hole 131 is to be convenient to bearing pin (in figure notIllustrate) through axis hole 131, tooth platform 10 is connected on retainer, when the driving machine of sewing machineWhen structure drives retainer motion, tooth platform 10, along with retainer moves together, drives cloth conveying teeth simultaneously20 operate, thereby reach the object of work feed.
On braces 21, two dual pinion racks 23 arranges on the one hand and dowel 24 and toothFrame 21 sides surround and form above-mentioned square opening 25, and the arrangement of bidentate can increase on the other handPulling force to cloth when large cloth conveying teeth 20 pulls cloth, can be disposable without hindrance in the time of feedingCloth has been carried on ground, there will not be cloth to carry not in time, causes cloth to pile upPhenomenon. The setting of multiple monodentate tooth bars 22 is to increase connecing of cloth conveying teeth 20 and clothTouch area, be also conducive to increase the pulling force of cloth conveying teeth 20 to cloth, be convenient to cloth conveying teeth simultaneously20 are better delivered to the other end by cloth from one end.
The setting of square opening 25 is to provide a motion for sewing needle punctures to move up and downSpace, the thorn material of sewing machine, hook line, take-up etc. all here complete.
Further preferably, dowel 24 is provided with linear distributing multiple teeth 241.When cloth is carried from entering near one end of dowel 24, by above-mentioned teeth 241, two pairsGear rack 23 drives order successively to carry until sewing process finishes from cloth conveying teeth 20.Arranging of multiple teeth 241 has certain guiding function to the conveying of cloth, in addition,Ensure between teeth 241, two dual pinion racks 23 and multiple monodentate tooth bar 22The cloth that cloth is in square opening 25 tops keeps smooth, is convenient to sewing needle and punctures up and downCloth is smooth, avoids cloth in the time of lower pin to pile up, and the sewing of cloth is exerted an influence, veryTo causing damage to sewing needle.
Preferably, on each hinge ear 13, all offer vertical with axis hole 131 and communicateTwo screwed holes 132. In the second screwed hole 132, be screwed into screw, to bearing pin and axis hole 131Further fix, guarantee that tooth platform 10, with retainer, relative motion can not occur. WhenSo in actual conditions, can carry out bearing pin and axis hole 131 according to concrete working conditionLocking.
Further preferably, on the sidewall of support 11, offer between two hinge ears 13First " U " shape groove 15, second " U " shape groove 16, the first " U " shape groove 15 andThe opening of two " U " shape groove 16 oppositely arranges, and in first " U " shape groove 15, offers and passes throughThe first through hole 151 of perforating branches frame 11, offers on the sidewall of support 11 near lug 12Two the second through holes 161 that be arranged in parallel, one of them second through hole 161 is through support 11And be connected with second " U " shape groove 16.
The setting of the first through hole 151 and the second through hole 161 is to be convenient to tooth platform 10 and sewing machineMiscellaneous part in feed mechanism is connected, and first " U " shape groove 15 and second " U " shapeThe setting of groove 16 is the placement that facilitates screw or other union pieces, is also convenient to the simultaneouslyThe processing of one through hole 151 and the second through hole 161, in addition, first " U " shape groove 15 withSecond " U " shape groove 16 offer the weight that can alleviate tooth platform 10, to a certain extentThe intensity that increases himself also has certain aesthetic property simultaneously.
This work feed assembly is under original state, and cloth conveying teeth 20 is connected with tooth platform 10, tooth platform10 are fixedly mounted on retainer, and sewing machine driving mechanism drives retainer motion, further bandMoving tooth platform 10 swings with cloth conveying teeth 20, and now cloth starts to carry from cloth conveying teeth 20,Carry out sewing work, whole work feed modular construction is simple, person's operation easy to use.
Preferably, described work feed assembly material is aluminium alloy, count by weight percentage,Described aluminium alloy comprises following component: Si:0.20-0.40%, Mg:0.30-0.50%,Cu：0.15-0.30％，Fe：0.80-1.00％，Mn：0.15-0.30％，Zn：0.10-0.25％，Cr:0.02-0.10%, Ti:0.15-0.30%, Sc:0.02-0.03%, surplus is AlAnd inevitable impurity.
Table 1: the constituent of work feed assembly and mass percent thereof described in embodiment 1-3
Embodiment 1
Select aluminium to close by the constituent of percentage by weight described in above-mentioned table 1 embodiment 1Gold copper-base alloy, melts aluminum alloy materials, obtains Al-alloy metal liquid;
Al-alloy metal liquid is stirred, then pass into nitrogen rotation degasification and carry outRefining, adds ordinary oxygen agent to carry out scarfing cinder processing;
Above-mentioned Al-alloy metal liquid after treatment is cast as to work feed assembly blank;
Work feed assembly blank is heat-treated and got final product to obtain final work feed assembly finished product, heat placeReason comprises solution treatment and natural aging treatment, and wherein solid solution temperature is 550 DEG C,Insulation 5h, the Ageing Treatment time is 25h.
Embodiment 2
Select aluminium to close by the constituent of percentage by weight described in above-mentioned table 1 embodiment 2Gold copper-base alloy, melts aluminum alloy materials, obtains Al-alloy metal liquid;
Al-alloy metal liquid is stirred, then pass into nitrogen rotation degasification and carry outRefining, adds ordinary oxygen agent to carry out scarfing cinder processing;
Above-mentioned Al-alloy metal liquid after treatment is cast as to work feed assembly blank;
Work feed assembly blank is heat-treated and got final product to obtain final work feed assembly finished product, heat placeReason comprises solution treatment and natural aging treatment, and wherein solid solution temperature is 545 DEG C,Insulation 6h, the Ageing Treatment time is 30h.
Embodiment 3
Select aluminium to close by the constituent of percentage by weight described in above-mentioned table 1 embodiment 3Gold copper-base alloy, melts aluminum alloy materials, obtains Al-alloy metal liquid;
Al-alloy metal liquid is stirred, then pass into nitrogen rotation degasification and carry outRefining, adds ordinary oxygen agent to carry out scarfing cinder processing;
Above-mentioned Al-alloy metal liquid after treatment is cast as to work feed assembly blank;
Work feed assembly blank is heat-treated and got final product to obtain final work feed assembly finished product, heat placeReason comprises solution treatment and natural aging treatment, and wherein solid solution temperature is 560 DEG C,Insulation 4h, the Ageing Treatment time is 24h.
Comparative example 1
Select 6061 aluminium alloys to make work feed assembly by the preparation method in embodiment 1, thisPlace is not repeated the preparation method in embodiment 1.
Comparative example 2
For common commercially available work feed assembly.
Work feed assembly in embodiment 1-3 and comparative example 1-2 is carried out to performance test and ratio, result is as shown in table 2.
Table 2: the performance test results of the work feed assembly in embodiment 1-3 and comparative example 1-2
In sum, compact conformation of the present invention, work feed efficiency are high; Adopt tooth platform and work feedThe combining form of tooth has certain protective role to the structure of cloth conveying teeth, extends its service life;Cloth conveying teeth stiff end is positioned on the straight line at feed direction place, ensures that cloth conveying teeth both sides are stressedEvenly, cloth is carried steadily. In addition, select compatibility rational, mechanical performance is fabulousAluminium alloy is made, by the synergy between each element, and choose reasonable preparation sideMethod, makes the work feed assembly mechanical performance that makes fabulous, especially have good anti-wear performance,Anticorrosive property, and then service life and the operating efficiency of raising work feed assembly.
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 (6)
1. a work feed assembly, comprises tooth platform and cloth conveying teeth, it is characterized in that, described inTooth platform comprises the support with a level table, and an epitaxial lateral overgrowth of support is stretched formation lug,Opposite side is installed with the two hinge ears that be arranged in parallel, on each hinge ear, all offers axis hole,On level table, offer some the first screwed holes and one of them the first screwed hole is located inLug middle part, described cloth conveying teeth comprises braces, offers and described the first spiral shell on bracesPit is some adjustment holes one to one, and described braces is arranged on level table by screwUpper, on the end face at braces away from support, be provided with two dual pinion racks that be arranged in parallel,Between two dual pinion racks, be provided with the some monodentate tooth bars that are uniformly distributed and be arranged in parallel, instituteState two dual pinion racks stretch out respectively and pass through a dowel be connected, described braces,Dowel and two dual pinion racks surround and form a square opening, and described dowel is provided withLinear distributing some teeth; On each hinge ear, all offer vertical with axis hole and communicateThe second screwed hole; On the sidewall of described support, offer between two hinge ears first" U " shape groove, second " U " shape groove, described first " U " shape groove and second " U " shapeThe opening of groove oppositely arranges, and in described first " U " shape groove, offers and runs through first of supportThrough hole, offers two the second through holes that be arranged in parallel on the sidewall of described support near lug,One of them second through hole passes support and is connected with second " U " shape groove;
Wherein, described work feed assembly material is aluminium alloy, counts by weight percentage instituteState aluminium alloy and comprise following component: Si:0.20-0.40%, Mg:0.30-0.50%, Cu:0.15-0.30％，Fe：0.80-1.00％，Mn：0.15-0.30％，Zn：0.10-0.25％，Cr:0.02-0.10%, Ti:0.15-0.30%, Sc:0.02-0.03%, surplus is AlAnd inevitable impurity.
2. work feed assembly according to claim 1, is characterized in that, described aluminiumAlloy is grouped into by the one-tenth of following percentage by weight: Si:0.30%, and Mg:0.40%,Cu：0.20％，Fe：0.90％，Mn：0.25％，Zn：0.20％，Cr：0.06％，Ti:0.20%, Sc:0.025%, surplus is Al and inevitable impurity.
3. work feed assembly according to claim 1, is characterized in that, described aluminiumAlloy is grouped into by the one-tenth of following percentage by weight: Si:0.20%, and Mg:0.50%,Cu：0.15％，Fe：1.00％，Mn：0.15％，Zn：0.25％，Cr：0.02％，Ti:0.30%, Sc:0.02%, surplus is Al and inevitable impurity.
4. work feed assembly according to claim 1, is characterized in that, described aluminiumAlloy is grouped into by the one-tenth of following percentage by weight: Si:0.40%, and Mg:0.30%,Cu：0.30％，Fe：0.80％，Mn：0.30％，Zn：0.10％，Cr：0.10％，Ti:0.15%, Sc:0.03%, surplus is Al and inevitable impurity.
5. a preparation method for work feed assembly as claimed in claim 1, is characterized in that,Described preparation method comprises the steps:
S1, by the constituent described in work feed assembly aluminium alloy in claim 1 and heavyAmount percentage is selected aluminum alloy materials, and aluminum alloy materials is melted, and obtains aluminium alloy goldBelong to liquid;
S2, Al-alloy metal liquid is stirred, then carry out refinery by de-gassing, scarfing cinder placeReason;
S3, above-mentioned Al-alloy metal liquid after treatment is cast as to work feed assembly blank;
S4, work feed assembly blank heat-treated to get final product to obtain final work feed assembly finished product,Heat treatment comprises solution treatment and natural aging treatment, and wherein solid solution temperature is540-560 DEG C, insulation 4-6h, the Ageing Treatment time is 24-30h.
6. the preparation method of work feed assembly according to claim 5, is characterized in that,In step S4, solid solution temperature is 545-555 DEG C, and insulation 4-5h, when Ageing TreatmentBetween be 24-26h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410452691.9A CN104294483B (en) | 2014-09-05 | 2014-09-05 | A kind of work feed assembly and preparation method thereof |
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| CN105369088A (en) * | 2015-11-18 | 2016-03-02 | 宁波市鄞州银鑫铝业有限公司 | Valve core |
| CN106498224A (en) * | 2016-11-28 | 2017-03-15 | 宁波瑞铭机械有限公司 | A kind of cloth pressing foot |
| CN106399727B (en) * | 2016-11-28 | 2019-04-05 | 宁波瑞铭机械有限公司 | A kind of needle bar interlocking lever |
| CN115262101B (en) * | 2022-08-02 | 2023-05-30 | 南京苏美达服装技术研发有限公司 | Computer flush joint machine convenient to operation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263958A (en) * | 1999-01-21 | 2000-08-23 | 重机公司 | Cloth feeding device for sewing machine |
| CN1376820A (en) * | 2001-03-23 | 2002-10-30 | 重机公司 | Cloth feeder of 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 |
| CN103695732A (en) * | 2013-11-26 | 2014-04-02 | 宁波瑞铭机械有限公司 | Connecting rod of sewing machine and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2010194159A (en) * | 2009-02-26 | 2010-09-09 | Brother Ind Ltd | Sewing machine |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263958A (en) * | 1999-01-21 | 2000-08-23 | 重机公司 | Cloth feeding device for sewing machine |
| CN1376820A (en) * | 2001-03-23 | 2002-10-30 | 重机公司 | Cloth feeder of 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 |
| CN103695732A (en) * | 2013-11-26 | 2014-04-02 | 宁波瑞铭机械有限公司 | Connecting rod of sewing machine and preparation method thereof |
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