CN104233644B - The sewing machine of top and bottom feed - Google Patents
The sewing machine of top and bottom feed Download PDFInfo
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- CN104233644B CN104233644B CN201410442503.4A CN201410442503A CN104233644B CN 104233644 B CN104233644 B CN 104233644B CN 201410442503 A CN201410442503 A CN 201410442503A CN 104233644 B CN104233644 B CN 104233644B
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Abstract
The present invention relates to a kind of sewing machine of top and bottom feed, it comprises secondary feed regulation, feed spool, feed lifting rock shaft, secondary feed regulation comprises that the lower differential feed that is fixed on feed spool regulates crank, the first retainer seat, pivot bush unit is in the lower differential feed crank of feed spool, pivot bush unit is in the lower differential driving crank of feed lifting rock shaft, the first retainer seat connects feeding tooth, lower differential feed crank connects lower differential feed tooth, lower differential feed regulates crank, first time differential feed connecting rod, lower differential driving crank, second time differential feed connecting rod, the hinged interlock successively of lower differential feed crank, it is adjustable wherein descending differential feed to regulate the articulated position between crank and first time differential feed connecting rod. by the adjusting of this articulated position, regulate the arm of force relation between crank and first time differential feed connecting rod thereby change lower differential feed, the relation that makes feed spool swing be passed to feeding tooth and lower differential feed tooth changes, and realizes lower differential feed and regulates.
Description
Technical field
The present invention relates to sewing machine, is a kind of sewing machine of top and bottom feed.
Background technology
Sewing machine is to use one or more sewing thread, forms one or more stitchings on sewing, and one or more layers sewing is interweavedOr the machine uniting by a seam. Along with the progress of state-of-the-art technology, sewing machine is more and more advanced, is no longer confined to traditional seamThe technique of threading, but integrate the modernization stitching process of sewing and various modeling functions. As the mandate of Chinese patent literature publicationNotification number CN200967877Y, on October 31 2007 Granted publication day, utility model name is called that " the differential of sewing machine sentMaterials device ", it comprises feeding retainer and the differential retainer be located on sewing machine frame, on feeding retainer and differential retainer, is respectively equipped withFeeding tooth and differential tooth, be also provided with power spindle and power transmission shaft on sewing machine, power spindle drives power transmission shaft to turn by transmission mechanismMoving, between power transmission shaft and above-mentioned feeding retainer, be provided with the feed mechanism that makes the translation in frame of feeding retainer when power transmission shaft rotational,Between power transmission shaft and differential retainer, be provided with the differential attachment that makes the translation in frame of feeding retainer when power transmission shaft rotational. By above-mentionedStructure, thus realize sewing machine differential feed.
The Granted publication CN101792956B also publishing just like Chinese patent literature, November 14 2012 Granted publication day,Denomination of invention is " have differential feed mechanism on the sewing machine of contraction joint function and use the upper feeding of this mechanism mechanism of crumpling ". Its bagDraw together pads swing axis, crank, presser feet wobble crank, cloth pushing shaft, cloth feeding crank, crank connecting link, presser feet connecting rod I, presser feet evenBar II, outer presser feet; Also comprise and regulate fork axle; Be installed on and regulate the adjusting pendulum that on fork axle, also adjustable adjusting plate stem axle swingsBar axle, regulates fork axle to be connected with crank by a connecting rod I; The other end and the slide crank of crank connecting link are dynamically connected. Differential on thisFeed mechanism, by changing the cloth feed amount of outer presser feet, reaches the effect of differential contraction joint, interacts by outer presser feet and rear presser feet,Form fold.
Above two patent documentations are all forms of utilizing upper differential feed, reach required sewing efficiency. But do not disclose relevantThe structure of lower differential feed, if can design a kind of structure of lower differential feed, and is combined with it with upper differential feed,Can reach better sewing efficiency. Therefore need existing sewing machine differential feed to regulate and improve.
Summary of the invention
For overcoming above-mentioned deficiency, the object of the invention is to provide to this area a kind of sewing machine of top and bottom feed, make its solutionExisting like product does not have the function that simultaneously possesses upper differential feed and lower differential feed, the not good enough technical problem of sewing pattern. ItsObject is achieved by the following technical solution.
A sewing machine for top and bottom feed, this sewing machine comprises frame, upper differential feed mechanism, lower differential feed mechanism,Upper differential feed mechanism comprises feed regulation, main feed regulation, upper axle, differential feed axle, lower differential feederStructure comprises main feed regulation, secondary feed regulation, feed spool, feed lifting rock shaft, and upper axle is as driving shaft, and rotation locationIn frame, upper axle be in transmission connection respectively differential feed axle, feed spool, differential feed axle two ends and feed spool two ends are all socketed axle sleeve,Axle sleeve is fixed on frame. Its structural feature is that described secondary feed regulation comprises that lower differential feed regulates crank, lower differential biographyMoving crank, first time differential feed connecting rod, second time differential feed connecting rod, the first retainer seat, feeding tooth, lower differential feed songHandle, lower differential feed tooth, the first feed lifting rock fork-shaped crank, the second feed lifting rock fork-shaped crank, described lower differential feed regulates crank one endAll be fixed on described feed spool with the first retainer seat, described lower differential feed crank one end and feed spool pivot bush unit are position rotating,Described feed lifting rock shaft is all fixed in described first feed lifting rock fork-shaped crank one end and second feed lifting rock fork-shaped crank one end, described lower differential gearingCrank one end and described feed lifting rock shaft pivot bush unit are position rotating; Described lower differential feed regulates crank to be provided with adjustment hole, and described theOnce differential feed connecting rod one end is flexibly connected crank-pin, and this crank-pin and described adjustment hole are slidably matched, and crank-pin is by connectingConnect locking member and described lower differential feed adjusting crank locking positioning; Described first time differential feed connecting rod other end is same by having strong market potentialTime and described second time differential feed connecting rod one end and the described lower differential driving crank other end hinged, second time differential feed connecting rodThe other end and the described lower differential feed crank other end are hinged; The hinged feeding tooth of described the first retainer seat one end, the feeding tooth other endThe movable cooperation of fork-shaped notch being provided with the described first feed lifting rock fork-shaped crank other end is hinged slip, described lower differential feed crankBe provided with the second retainer seat with one end of feed spool socket, the hinged lower differential feed tooth of the second retainer seat one end, lower differential feed tooth is anotherThe movable cooperation of fork-shaped notch that one end is provided with the described second feed lifting rock fork-shaped crank other end is hinged slip; Wherein each parts are hingedThe axle center swinging is all parallel with described upper axle.
By regulating on crank adjustment hole is set at lower differential feed, and by first time differential feed connecting rod and the adjusting of lower differential feedBetween crank, be designed to the mode of locking member locking, thereby convenient lower differential feed adjusting crank and the first time differential feed of regulating connectsArticulated position between bar. Meanwhile, by the variation of this articulated position, regulate crank and first time thereby change lower differential feedThe linkage status of differential feed connecting rod, has changed the amplitude of oscillation of first time differential feed connecting rod, and first time differential feed connecting rodThe amplitude of oscillation changes, and then the amplitude of oscillation of linked second time differential feed connecting rod and lower differential feed crank. The pendulum of lower differential feed crankAmplitude variationization has changed again the horizontal movement stroke of time differential feed tooth, thereby makes the relative level fortune of lower differential feed tooth and feeding toothMoving stroke alteration, has realized time differential feed and has regulated, and regulative mode is comparatively simple, flexible, and differential work is comparatively reliable.
Described lower differential feed regulates crank, first time differential feed connecting rod, second time differential feed connecting rod, lower differential gearing songThe handle each other position of interlock is all positioned at described feed spool, feed lifting rock shaft below, described the first retainer seat, feeding tooth, the second retainerSeat, lower differential feed the tooth each other position of interlock are all positioned at described feed spool, feed lifting rock shaft top. This space layout can adapt toThe mechanical layout of existing all kinds of sewing machines, facilitates retrofit application.
Described lower differential driving crank and described lower differential feed regulate crank exchange installation site, i.e. lower differential driving crank one endBe fixed on described feed spool, lower differential feed regulates feed lifting rock shaft described in the pivot bush unit of crank one end, the lower differential driving crank other endHinged described first time differential feed connecting rod one end, first time differential feed connecting rod other end is by crank-pin while and described allowance below nominal sizeMoving feeding regulates adjustment hole and second time differential feed connecting rod one end of crank hinged, and this crank-pin and described adjustment hole are slidably matched,And swivel pin is by connecting locking member and described lower differential feed adjusting crank locking positioning. By this scenario-frame, also can realizeThe adjusting of lower differential feed.
It is straight type hole or curved hole that described lower differential feed regulates the adjustment hole of crank. Adjustment hole can arrange arbitrarily as required.
The main feed regulation of described upper differential feed mechanism and lower differential feed mechanism comprise stitch length knob, feeding adjusting screw(rod),Feeding adjusting block, the connecting rod of falling feeding, swing panel seat, the long oscillating deck of feeding, the short oscillating deck of feeding, feeding crank, feeding connecting rod,Synchronising (connecting) rod, differential feed swing panel seat, the short oscillating deck of differential feed, the long oscillating deck of differential feed, differential feed connecting rod, poorMoving feeding rear crank, differential feed axle, described stitch length knob is fixed on feeding adjusting screw(rod) one end, feeding adjusting screw(rod) with described inFrame spiral coordinates, and the arc-shaped concave of the feeding adjusting screw(rod) other end and described feeding adjusting block one side offsets, feeding adjusting blockThe hinged described connecting rod of falling feeding of opposite side one end, the middle part between feeding adjusting block both sides is movable fixed by locating shaft, positioning shaft sleeveBe positioned at described frame; One side of the described connecting rod of the falling feeding other end and described swing panel seat one end is hinged, swings panel seat other end hingeConnect the short oscillating deck of described feeding one end, the middle part between swing panel seat two ends is by alignment pin and described frame activity orientation; FeedingThe short oscillating deck other end is hinged feeding long oscillating deck one end and feeding connecting rod one end simultaneously, the feeding of feeding connecting rod other end pivot bush unitEccentric wheel, feeding eccentric wheel is fixedly connected with described upper axle, the feeding hinged feeding crank of long oscillating deck other end one end, feeding crankThe other end is fixedly connected with described feed spool; The hinged synchronising (connecting) rod of opposite side one end of the hinged connecting rod of falling feeding of described swing panel seat one end,The hinged differential feed of the synchronising (connecting) rod other end swings panel seat one end, and differential feed swings the short swing of the hinged differential feed of the panel seat other endPlate one end, the middle part between differential feed swing panel seat two ends is by alignment pin and described frame activity orientation; The short pendulum of differential feedThe moving plate other end hinged differential feed connecting rod one end and the long oscillating deck of differential feed one end simultaneously, the activity of the differential feed connecting rod other endSocket differential feed eccentric wheel, differential feed eccentric wheel is fixedly connected with described upper axle, the long oscillating deck other end hinge of described differential feedConnect differential feed rear crank one end, the differential feed rear crank other end is fixedly connected with differential feed axle one end, the activity of differential feed axleSocket front shaft sleeve, rear axle housing, front shaft sleeve, rear axle housing are fixed on described frame; Wherein the axle center of the hinged swing of each parts all and instituteState axle parallel.
This main feed regulation, is in fact by positive and negative rotation stitch length knob, thereby changes feeding adjusting screw(rod) and feeding tuneThe state that joint piece offsets, changes angle position, feeding adjusting block action and then link batch turning connecting rod, the swing of feeding adjusting blockPanel seat, the long oscillating deck of feeding, the short oscillating deck of feeding, feeding crank, feed spool, change the amplitude of fluctuation of feed spool,Feed spool amplitude of fluctuation changes, thereby can change the horizontal movement stroke of lower differential feed tooth and feeding tooth. Meanwhile, swing panel seatLink differential feed swing panel seat, the short oscillating deck of differential feed, the long oscillating deck of differential feed, differential feed even by synchronising (connecting) rodBar, differential feed rear crank, differential feed axle, change the amplitude of oscillation of differential feed axle, and then change differential feed toothHorizontal movement stroke. Realize the regulatory function of this main feed regulation.
One end of the hinged connecting rod of falling feeding of described swing panel seat connects swing panel seat back-moving spring.
Described upper feed regulation comprises differential feed fork-shaped crank, the front crank of differential feed, differential feed slider pin, differentialFeeding balance staff, differential feed pendulum axle sleeve, differential feed fork, differential feed fork cover, fork slider pin, differential feed forkSlide block, presser feet motion saddle, differential feed swing link pin, differential feed tooth, described differential feed fork-shaped crank one end is fixedly connected withDescribed differential feed axle, the other end is provided with fork-shaped notch, is provided with the described differential feed slider pin of slidable adjustment in fork-shaped notch,Crank one end is provided with the bar shaped slide opening coordinating with described differential feed slider pin before described differential feed, the front crank of differential feed anotherEnd is fixedly connected with described differential feed balance staff one end, and the axis parallel of differential feed balance staff and described differential feed slider pin, poorThe described differential feed pendulum axle sleeve of the outside socket of moving feeding balance staff, differential feed pendulum axle sleeve is fixed on described frame; Differential feed balance staffThe other end be vertically fixedly connected with differential feed fork cover, the described differential feed fork of slip is set in differential feed fork cover,The bar portion of differential feed fork is provided with pin-and-hole radially, and pin-and-hole connects described fork slider pin, and differential feed fork is arranged with and putsBar slider pin two ends coordinate and make the slide opening of differential feed fork spacing slip vertically, and stretch out respectively at differential feed swing link pin two endsSlide opening is fixedly connected with differential feed fork slide block, two differential feed fork slide blocks respectively with both sides, described presser feet motion saddle one endThe guide hole being provided with is slidably matched, and swaying direction and the oscillating stroke of this guide hole direction and stroke and differential feed fork adapt,Presser feet motion guide frame is fixed on described frame, the hinged differential feed tooth of the described differential feed fork other end; Wherein each parts hingeThe axle center that connects swing is all parallel with described upper axle.
The adjusting of feed regulation on this, is mainly by regulating the position of differential feed slider pin in fork-shaped notch, therebyChange the articulated position between the front crank of differential feed fork-shaped crank and differential feed, i.e. differential feed fork-shaped crank and differential feedThe arm of force length of front crank changes, thereby the amplitude of fluctuation of the front crank of differential feed is changed, the pendulum of crank before differential feedMoving amplitude changes, and finally changes the horizontal movement stroke of differential feed tooth, realizes the adjusting of upper differential feed.
Described differential feed slider pin is made up of the shank slide block that is threaded, and expansion lock under the effect that is threaded at shank of slide blockTight in the fork-shaped notch of differential feed fork-shaped crank.
The present invention, in conjunction with reasonable in design, increased on the basis of existing technology time differential feed and has regulated, and coordinates upper differential feedRegulate, can realize the more sewing technology of Suresh Kumar, sewing efficiency is better, and be suitable as upper and lower differential sewing machine and use, or withThe architecture advances of class sewing machine.
Brief description of the drawings
Fig. 1 is the partial structurtes schematic diagram of the main feed regulation of the present invention and the combination of secondary feed regulation.
Fig. 2 is the partial structurtes schematic diagram of the secondary feed regulation of the present invention.
Fig. 3 is the partial structurtes schematic diagram one of the main feed regulation of the present invention.
Fig. 4 is a certain planar structure schematic diagram of the main feed regulation of Fig. 3.
Fig. 5 is the partial structurtes schematic diagram of feed regulation and main feed regulation combination in the present invention.
Fig. 6 is the partial structurtes schematic diagram two of the main feed regulation of the present invention.
Fig. 7 is the partial structurtes schematic diagram of material loading governor motion of the present invention.
Fig. 8 is the part interlock theory structure schematic diagram of the main feed regulation of the present invention.
In figure, the name of sequence number is called: 1, upper axle, 2, feed spool, 3, feed lifting rock shaft, 4, crank-pin, 5, first time differential feedConnecting rod, 6, second time differential feed connecting rod, 7, lower differential driving crank, 701, have strong market potential, 8, lower differential feed regulates crank,801, adjustment hole, 9, the first retainer seat, 10, feeding tooth, 11, lower differential feed crank, 1101, the second retainer seat, 12,Needle plate, 13, lower differential feed tooth, 14, the first feed lifting rock fork-shaped crank, 15, the second feed lifting rock fork-shaped crank, 16, feeding connecting rod,1601, feeding eccentric wheel, 17, stitch length knob, 18, feeding adjusting screw(rod), 19, feeding adjusting block, 20, positioning shaft sleeve,21, the connecting rod of falling feeding, 22, feeding crank, 23, the long oscillating deck of feeding, 24, the short oscillating deck of feeding, 25, axle sleeve, 26,Swing panel seat, 27, lift tooth connecting rod, 28, lift the handle of buckling, 29, the spanner of falling feeding, 30, the crank of falling feeding, 31, feedingSpanner axle sleeve, 32, the back-moving spring of falling feeding, 33, frame, 34, swing panel seat back-moving spring, 35, differential feed connecting rod,3501, differential feed eccentric wheel, 36, synchronising (connecting) rod, 37, differential feed swings panel seat, 38, the long oscillating deck of differential feed,39, the short oscillating deck of differential feed, 40, differential feed rear crank, 41, differential feed axle, 42, front shaft sleeve, 43, rear axle housing,44, differential feed fork-shaped crank, 45, differential feed slider pin, 46, crank before differential feed, 4601, bar shaped slide opening, 47,Differential feed balance staff, 48, differential feed pendulum axle sleeve, 49, differential feed fork cover, 4901, slide opening, 50, fork slider pin,51, differential feed fork slide block, 52, differential feed fork, 53, differential feed swing link pin, 54, presser feet motion saddle, 5401,Guide hole, 55, differential feed tooth.
Detailed description of the invention
Now by reference to the accompanying drawings 1～8, the invention will be further described.
The present invention designs a kind of upper and lower differential sewing machine that has, and especially designs upper and lower differential the sending in this sewing machineGovernor motion in material mechanism. Governor motion comprises feed regulation, main feed regulation, secondary feed regulation,Wherein secondary feed regulation is emphasis of the present invention mechanism, and it can realize separately the adjusting of differential feed under sewing machine. This pair is sentMaterial governor motion comprise lower differential feed regulate crank 8, lower differential driving crank 7, first time differential feed connecting rod 5, second timeDifferential feed connecting rod 6, the first retainer seat 9, feeding tooth 10, lower differential feed crank 11, lower differential feed tooth 13, first are liftedTooth fork-shaped crank 14, the second feed lifting rock fork-shaped crank 15, lower differential feed regulates crank 8 one end and the first retainer seat 9 to be all fixed onFeed spool 2, lower differential feed crank 11 one end and feed spool 2 pivot bush units are position rotating, the first feed lifting rock fork-shaped crank 14Feed lifting rock shaft 3 is all fixed in one end and second feed lifting rock fork-shaped crank 15 one end, lower differential driving crank 7 one end and feed lifting rock shaft 3 activitiesSocket is position rotating. Lower differential feed adjusting crank 8 is provided with the adjustment hole 801 of strip along crank direction, and lower differential sendingMaterial regulates crank 8 to be provided with the mark that facilitates adjustment operation. First time differential feed connecting rod 5 one end are flexibly connected crank-pin 4,This crank-pin 4 is slidably matched with adjustment hole 801, and crank-pin 4 one end connect locking nut through adjustment hole 801, by lockJack panel makes crank-pin 4 and lower differential feed regulate crank 8 locking positionings. First time differential feed connecting rod 5 other ends pass throughHave strong market potential 701 simultaneously hinged with second time differential feed connecting rod 6 one end and lower differential driving crank 7 other ends, second time differential sendingMaterial connecting rod 6 other ends and lower differential feed crank 11 other ends are hinged. The hinged feeding tooth of the first retainer seat 9 10 one end, feedingThe movable cooperation of fork-shaped notch that tooth 10 other ends are provided with first feed lifting rock fork-shaped crank 14 other ends is hinged slip, lower differential sendingMaterial crank 11 is provided with the hinged lower differential feed tooth of the second retainer seat 1101, the second retainer seat 1101 with one end that feed spool 2 is socketed13 one end, the movable cooperation of fork-shaped notch that lower differential feed tooth 13 other ends are provided with second feed lifting rock fork-shaped crank 15 other ends isHinged slip. Lower differential feed regulates crank 8, first time differential feed connecting rod 5, second time differential feed connecting rod 6, lower differentialThe driving crank 7 each other position of interlock is all positioned at feed spool 2, feed lifting rock shaft 3 belows, the first retainer seat 9, feeding tooth 10,The second retainer seat 1101, lower differential feed tooth 13 are all positioned at feed spool 2, feed lifting rock shaft 3 tops in the position of interlock each other. FeedingTooth 10, lower differential feed tooth 13 are all positioned needle plate 12 downsides, and needle plate 12 is fixed on frame 33. Above-mentioned each parts are hingedThe axle center swinging is all parallel with upper axle 1, and upper axle 1 and feed spool 2, feed lifting rock shaft 3 are parallel, feed spool 2 two ends and feed lifting rock shaft 3The equal pivot bush unit axle sleeve 25 in two ends, axle sleeve 25 is fixed on the frame 33 of sewing machine. Upper axle 1 rotation is positioned frame 33, and passesMotor is dynamically connected. Feed lifting rock shaft 3 is fixedly connected with lifts the handle 28 of buckling, and lifts hinged tooth connecting rod 27 one end of lifting of the handle 28 of buckling, and lifts tooth connecting rod27 other end pivot bush units are lifted pressure eccentric wheel, lift and press eccentric wheel to be fixedly connected with axle 1.
The Principles of Regulation of secondary feed regulation are: feed spool 2 is the driving shafts as this governor motion, by feed spool 2 (justDespining) swing, drive lower differential feed to regulate crank 8 swings and the first retainer seat 9 to swing, the first retainer seat 9 swings bandMoving feeding tooth 10 moves back and forth along the fork-shaped notch direction of the first feed lifting rock fork-shaped crank 14. Lower differential feed regulates crank 8 to driveFirst time differential feed connecting rod 5, lower differential driving crank 7, second time differential feed connecting rod 6, lower differential feed crank 11 are putMoving, lower differential feed crank 11 swings and drives lower differential feed tooth 13 past along the fork-shaped notch direction of the second feed lifting rock fork-shaped crank 15Reciprocating cutter. In the time regulating the position of crank-pin 4 in adjustment hole 801, regulate first time differential feed connecting rod 5 with lower differentialFeeding regulates the articulated position between crank 8, regulates crank 8 and first time differential two connecting rod that send thereby change lower differential feedArm of force length, makes to form three kinds between the reciprocating stroke of feeding tooth 10 and the stroke of lower differential feed tooth 13 reciprocating actionsState, is respectively: the reciprocating stroke of feeding tooth 10 is less than the reciprocating stroke of lower differential feed tooth 13, feeding tooth 10Reciprocating stroke equals the reciprocating stroke of lower differential feed tooth 13, and the reciprocating stroke of feeding tooth 10 is greater than allowance below nominal sizeThe moving reciprocating stroke of feeding tooth 13, thereby " crumpling ", " synchronously " of feeding, " contracting wrinkle " three kinds of different sewing under realizingFunction.
In above-mentioned secondary feeding adjustment structure, lower differential driving crank 7 regulates also commutative installation site of crank 8 with lower differential feed.Feed spool 2 is fixed in lower differential driving crank 7 one end, and lower differential feed regulates crank 8 one end pivot bush unit feed lifting rock shafts 3, underHinged first time differential feed connecting rod 5 one end of differential gearing crank 7 other ends, first time differential feed connecting rod 5 other ends pass throughCrank-pin 4 is simultaneously hinged with adjustment hole 801 and second time differential feed connecting rod 6 one end of lower differential driving crank 7, this crankPin 4 is slidably matched with adjustment hole 801, and swivel pin regulates crank 8 locking positionings by connecting locking member and lower differential feed.
Main feed regulation comprise stitch length knob 17, feeding adjusting screw(rod) 18, feeding adjusting block 19, the connecting rod of falling feeding 21,Swing panel seat 26, the long oscillating deck 23 of feeding, the short oscillating deck 24 of feeding, feeding crank 22, feeding connecting rod 16, synchronising (connecting) rod 36,Differential feed swings panel seat 37, the short oscillating deck 39 of differential feed, the long oscillating deck 38 of differential feed, differential feed connecting rod 35, poorMoving feeding rear crank 40, differential feed axle 41, stitch length knob 17 is fixed on feeding adjusting screw(rod) 18 one end, feeding adjusting screw(rod)18 coordinate with frame 33 spirals, and the arc-shaped concave of feeding adjusting screw(rod) 18 other ends and feeding adjusting block 19 1 sides offsets, and sendMaterial regulating block 19 the hinged connecting rod of falling feeding of opposite side 21 one end, the middle part between feeding adjusting block 19 both sides pass through locating shaft,Positioning shaft sleeve 20 activity orientation are in frame 33; The connecting rod of falling feeding 21 other ends are hinged with a side that swings panel seat 26 one end, pendulumMoving panel seat 26 these ends are also connected with and swing panel seat back-moving spring 34, and back-moving spring is fixedly connected with frame 33. Swing panel seat 26 anotherHold the short oscillating deck of hinged feeding 24 one end, the middle part between swing panel seat 26 two ends is by alignment pin and frame 33 activity orientation.Short oscillating deck 24 other ends of feeding hinged feeding long oscillating deck 23 one end and feeding connecting rod 16 one end simultaneously, feeding connecting rod 16 is anotherOne end pivot bush unit feeding eccentric wheel 1601, feeding eccentric wheel 1601 is fixedly connected with axle 1. Long oscillating deck 23 other ends of feedingHinged feeding crank 22 one end, feeding crank 22 other ends are fixedly connected with feed spool 2. Swing the hinged connecting rod of falling feeding of panel seat 26The hinged synchronising (connecting) rod of opposite side 36 one end of 21 one end, the hinged differential feed of synchronising (connecting) rod 36 other end swings panel seat 37 one end,Differential feed swings the short oscillating deck of the hinged differential feed of panel seat 37 other end 39 one end, and differential feed swings between panel seat 37 two endsMiddle part by alignment pin and frame 33 activity orientation. Short oscillating deck 39 other ends of differential feed hinged differential feed connecting rod simultaneouslyThe long oscillating deck of 35 one end and differential feed 38 one end, differential feed connecting rod 35 other end pivot bush unit differential feed eccentric wheels 3501,Differential feed eccentric wheel 3501 is fixedly connected with feed spool 2, the hinged differential feed rear crank of long oscillating deck 38 other end of differential feed40 one end, differential feed rear crank 40 other ends are fixedly connected with differential feed axle 41 one end, differential feed axle 41 pivot bush unitsFront shaft sleeve 42, rear axle housing 43, front shaft sleeve 42, rear axle housing 43 are fixed on frame 33.
In above-mentioned main feed regulation, also comprise the fall feed mechanism associated with the above-mentioned connecting rod of falling feeding 21, the bag of falling feed mechanismDraw together the spanner of falling feeding 29, the crank of falling feeding 30, the spanner of falling feeding axle sleeve 31, the back-moving spring of falling feeding 32, the spanner of falling feeding 29Connect the crank of falling feeding 30 by the spanner of falling feeding 29 axles, the outside socket of the spanner of the falling feeding 29 axles spanner of falling feeding axle sleeve 31, fallsFeeding spanner axle sleeve 31 is fixedly connected with frame 33, and the crank of falling feeding 30 is linked with the hook part of sending connecting rod middle part. When sendingWhen material spanner 29 drives the crank of falling feeding 30 to rotate, the crank of falling feeding 30 drives the connecting rod of falling feeding 21 to move, the connecting rod of falling feeding21 pivot angles that swing to feed spool 2 that link change, and make feeding tooth 10, lower differential feed tooth 13 reciprocating side separatelyTo on the contrary, realize the operation that backstitches of sewing machine.
The Principles of Regulation of main feed regulation are: by positive and negative rotation stitch length knob 17, stitch length knob 17 drives feeding to regulateScrew rod 18 rotates and is flexible along frame 33, and the arc-shaped concave of feeding adjusting screw(rod) 18 ends and feeding adjusting block 19 1 sides formsInterlock, feeding adjusting block 19 rotates along locating shaft, positioning shaft sleeve 20, the feeding adjusting block 19 opposite side interlock connecting rods of falling feeding21, the connecting rod of falling feeding 21 drives and swings panel seat 26 along its alignment pin swing, swings panel seat 26 and then the short oscillating deck of interlock feeding24, feeding connecting rod 16, the long oscillating deck 23 of feeding, feeding crank 22, feed spool 2, changes the arm of force between them, therebyRealize the adjusting to feed spool 2 (positive and negative rotation) amplitude of fluctuation, changed feeding tooth 10, allowance below nominal size that feed spool 2 linksThe movement travel of moving feeding tooth 13, realizes lower differential feed and regulates. Meanwhile, when swing panel seat 26 swings, also by synchronously connectingBar 36 differential feed that links swings panel seat 37, and differential feed swings panel seat 37 and swings along its alignment pin, and then interlock differential feedShort oscillating deck 39, differential feed connecting rod 35, the long oscillating deck 38 of differential feed, differential feed rear crank 40, differential feed axle 41,The arm of force between them is changed, realize the adjusting to differential feed axle 41 (positive and negative rotation) amplitude of fluctuation, thereby change differentialThe sports stroke of the differential feed tooth 55 that feed spool 41 links, in realization, differential feed regulates. I.e. main feed regulationIn realization, regulate when differential feed, lower differential feed.
Upper feed regulation comprise crank 46 before differential feed fork-shaped crank 44, differential feed, differential feed slider pin 45,Differential feed balance staff 47, differential feed pendulum axle sleeve 48, differential feed fork 52, differential feed fork cover 49, fork slider pin50, differential feed fork slide block 51, presser feet motion saddle 54, differential feed swing link pin 53, differential feed tooth 55. Differential sendingMaterial fork-shaped crank 44 one end are fixedly connected with differential feed axle 41, and the other end is provided with fork-shaped notch, and in fork-shaped notch, being provided with slides adjustsThe differential feed slider pin 45 of joint, differential feed slider pin 45 is made up of the shank slide block that is threaded, and slide block is at shank screw threadUnder the effect connecting, expand and lock onto in the fork-shaped notch of differential feed fork-shaped crank 44. Before differential feed, crank 46 one end are provided withWith the bar shaped slide opening 4601 that differential feed slider pin 45 shanks coordinate, before differential feed, crank 46 other ends are fixedly connected with differential sendingMaterial balance staff 47 one end, and the axis parallel of differential feed balance staff 47 and differential feed slider pin 45, outside differential feed balance staff 47Portion's socket differential feed pendulum axle sleeve 48, differential feed pendulum axle sleeve 48 is fixed on frame 33. The other end of differential feed balance staff 47 hangs downDirectly be fixedly connected with differential feed fork cover 49, differential feed fork overlaps the 49 interior differential feed forks 52 that slip is set, differential sendingThe bar portion of material fork 52 is provided with pin-and-hole radially, and pin-and-hole connects fork slider pin 50, and differential feed fork cover 49 is provided with and forkSlider pin 50 two ends coordinate and make differential feed fork 52 overlap along differential feed fork the slide opening 4901 that 49 axial limitings slide,Differential feed swing link pin 53 two ends are stretched out respectively slide opening 4901 and are fixedly connected with 51, two differential feed pendulum of differential feed fork slide blockBar slide block 51 is slidably matched with the guide hole 5401 that presser feet motion saddle 54 both sides, one end are provided with respectively, and these guide hole 5401 directionsBe to adapt with swaying direction and the oscillating stroke of differential feed fork 52 with stroke, presser feet motion guide frame is fixed on frame 33,The hinged differential feed tooth 55 of differential feed fork 52 other end. The adjusting of feed regulation on this is mainly poor by regulatingThe position of moving feeding slider pin 45 in fork-shaped notch, thus differential feed fork-shaped crank 44 and the front crank 46 of differential feed changedBetween articulated position, before differential feed fork-shaped crank 44 and differential feed, the arm of force length of crank 46 changes, therebyThe amplitude of fluctuation of the front crank 46 of differential feed is changed, and before differential feed, the amplitude of fluctuation of crank 46 changes, and finally changes differentialThe horizontal movement stroke of feeding tooth 55, realizes the adjusting of upper differential feed.
The Principles of Regulation of upper differential feed governor motion are: differential feed axle 41 is as the driving shaft of this governor motion, differential feedAxle 41 (positive and negative rotation) swings and drives differential feed fork-shaped crank 44 to swing, and differential feed fork-shaped crank 44 passes through differential feedBefore slider pin 45 drives differential feed, crank 46 swings, and before differential feed, crank 46 drives the positive and negative rotation of differential feed balance staff 47,Differential feed balance staff 47 drives differential feed fork cover 49, differential feed fork 52 to swing, and differential feed fork 52 is with momentMoving feeding tooth 55 is reciprocating along predetermined stroke and direction. When changing above-mentioned differential feed slider pin 45 at differential feed fork-shaped, in the bar shaped slide opening 4601 of differential feed slider pin 45 crank 46 before differential feed when in crank 44 fork-shaped notches the positionAlso change, thereby changed the articulated position of differential feed fork-shaped crank 44 with the front crank 46 of differential feed, make between the twoThe arm of force change, finally make the movement travel of differential feed tooth 55 change, realize the adjusting of upper differential feed.Upper differential feed regulates also can form " crumpling ", " synchronizeing ", " contracting wrinkle " three kinds of sewing states between main feeding adjusting.
In the time that upper differential feed adjusting, main feeding adjusting, secondary feeding regulate and are used in conjunction with, can form different sewing forms,To reach required sewing efficiency.
Above content is intended to illustrate technological means of the present invention, and unrestricted technical scope of the present invention. Those skilled in the art's knotClose existing common practise the present invention is done to apparent improvement, within also falling into the protection domain of the claims in the present invention.
Claims (8)
1. a sewing machine for top and bottom feed, this sewing machine comprises frame (33), upper differential feed mechanism, lower differential sendingMaterial mechanism, upper differential feed mechanism comprises feed regulation, main feed regulation, upper axle (1), differential feed axle (41),Lower differential feed mechanism comprises main feed regulation, secondary feed regulation, feed spool (2), feed lifting rock shaft (3), upper axle (1)As driving shaft, and rotation is positioned frame (33), upper axle (1) be in transmission connection respectively differential feed axle (41), feed spool (2),Feed lifting rock shaft (3), and upper axle (1) and differential feed axle (41), feed spool (2), feed lifting rock shaft (3) are parallel, feed spool (2)Two ends and feed lifting rock shaft (3) two ends are all socketed axle sleeve (25), and axle sleeve (25) is fixed on frame (33); It is characterized in that described pairFeed regulation comprise lower differential feed regulate crank (8), lower differential driving crank (7), first time differential feed connecting rod (5),Second time differential feed connecting rod (6), the first retainer seat (9), feeding tooth (10), lower differential feed crank (11), lower differentialFeeding tooth (13), the first feed lifting rock fork-shaped crank (14), the second feed lifting rock fork-shaped crank (15), described lower differential feed regulates crank(8) one end and the first retainer seat (9) are all fixed on described feed spool (2), described lower differential feed crank (11) one end withFeed spool (2) pivot bush unit is position rotating, described the first feed lifting rock fork-shaped crank (14) one end and the second feed lifting rock fork-shaped crank (15)Described feed lifting rock shaft (3) is all fixed in one end, described lower differential driving crank (7) one end and described feed lifting rock shaft (3) pivot bush unitBe position rotating; Described lower differential feed regulates crank (8) to be provided with adjustment hole (801), described first time differential feed connecting rod (5)One end is flexibly connected crank-pin (4), and this crank-pin (4) is slidably matched with described adjustment hole (801), and crank-pin (4) is logicalCross connection locking member and described lower differential feed adjusting crank (8) locking positioning; Described first time differential feed connecting rod (5) is anotherOne end is by (701) while and described second time differential feed connecting rod (6) one end and the described lower differential driving crank (7) of having strong market potentialThe other end is hinged, and second time differential feed connecting rod (6) other end and described lower differential feed crank (11) other end are hinged; InstituteState the first hinged feeding tooth of retainer seat (9) (10) one end, feeding tooth (10) other end and described the first feed lifting rock fork-shaped crank (14)The movable cooperation of fork-shaped notch that the other end is provided with is hinged slip, described lower differential feed crank (11) and feed spool (2) socketOne end be provided with the second retainer seat (1101), the second hinged lower differential feed tooth of retainer seat (1101) (13) one end, lower differentialThe movable cooperation of fork-shaped notch that feeding tooth (13) other end is provided with described the second feed lifting rock fork-shaped crank (15) other end is hingedSlide; Wherein the axle center of the hinged swing of each parts is parallel with described upper axle (1).
2. the sewing machine of top and bottom feed according to claim 1, is characterized in that described lower differential feed regulates crank(8), first time differential feed connecting rod (5), second time differential feed connecting rod (6), lower differential driving crank (7) join each otherMoving position is all positioned at described feed spool (2), feed lifting rock shaft (3) below, described the first retainer seat (9), feeding tooth (10),The second retainer seat (1101), lower differential feed tooth (13) the each other position of interlock are all positioned at described feed spool (2), feed lifting rock shaft(3) top.
3. the sewing machine of top and bottom feed according to claim 1, is characterized in that described lower differential driving crank (7)Regulate crank (8) exchange installation site with described lower differential feed, lower differential driving crank (7) one end is sent described in being fixed onMaterial axle (2), lower differential feed regulates feed lifting rock shaft (3) described in the pivot bush unit of crank (8) one end, lower differential driving crank (7)The hinged described first time differential feed connecting rod of the other end (5) one end, first time differential feed connecting rod (5) other end passes through crankPin (4) regulates adjustment hole (801) and second time differential feed connecting rod (6) of crank (8) simultaneously with described lower differential feedOne end is hinged, and this crank-pin (4) and described adjustment hole (801) are slidably matched, and crank-pin (4) by connect locking member withDescribed lower differential feed regulates crank (8) locking positioning.
4. the sewing machine of top and bottom feed according to claim 1, is characterized in that described lower differential feed regulates crank(8) adjustment hole (801) is straight type hole or curved hole.
5. the sewing machine of top and bottom feed according to claim 1, it is characterized in that described upper differential feed mechanism and underThe main feed regulation of differential feed mechanism comprise stitch length knob (17), feeding adjusting screw(rod) (18), feeding adjusting block (19),The connecting rod of falling feeding (21), swing panel seat (26), the long oscillating deck of feeding (23), the short oscillating deck of feeding (24), feeding crank (22),Feeding connecting rod (16), synchronising (connecting) rod (36), differential feed swing panel seat (37), the short oscillating deck of differential feed (39), differentialThe long oscillating deck of feeding (38), differential feed connecting rod (35), differential feed rear crank (40), differential feed axle (41), described inStitch length knob (17) is fixed on feeding adjusting screw(rod) (18) one end, feeding adjusting screw(rod) (18) and described frame (33) spiral shellScrew and close, the arc-shaped concave of feeding adjusting screw(rod) (18) other end and described feeding adjusting block (19) one sides offsets, and feeding is adjustedThe hinged described connecting rod of falling feeding (21) of opposite side one end of joint piece (19), the middle part between feeding adjusting block (19) both sides is logicalCross locating shaft, positioning shaft sleeve (20) activity orientation in described frame (33); The described connecting rod of falling feeding (21) other end with described inA side that swings panel seat (26) one end is hinged, swings panel seat (26) the other end short oscillating deck of hinged described feeding (24) one end,Middle part between swing panel seat (26) two ends is by alignment pin and described frame (33) activity orientation; The short oscillating deck of feeding (24)The other end is the long oscillating deck of hinged feeding (23) one end and feeding connecting rod (16) one end simultaneously, and feeding connecting rod (16) other end is livedMoving cover feeding eccentric wheel (1601), feeding eccentric wheel (1601) is fixedly connected with described upper axle (1), the long oscillating deck of feeding (23)The hinged feeding crank of the other end (22) one end, feeding crank (22) other end is fixedly connected with described feed spool (2); Described pendulumThe hinged synchronising (connecting) rod of opposite side (36) one end of the moving hinged connecting rod of falling feeding of panel seat (26) (21) one end, synchronising (connecting) rod (36)The hinged differential feed of the other end swings panel seat (37) one end, and it is short that differential feed swings the hinged differential feed of panel seat (37) other endOscillating deck (39) one end, the middle part between differential feed swing panel seat (37) two ends is by alignment pin and described frame (33)Activity orientation; The short oscillating deck of differential feed (39) other end while hinged differential feed connecting rod (35) one end and differential feed are longOscillating deck (38) one end, differential feed connecting rod (35) other end pivot bush unit differential feed eccentric wheel (3501), differential feedEccentric wheel (3501) is fixedly connected with described upper axle (1), the hinged differential feed of the long oscillating deck of described differential feed (38) other endRear crank (40) one end, differential feed rear crank (40) other end is fixedly connected with differential feed axle (41) one end, differential sendingMaterial axle (41) pivot bush unit front shaft sleeve (42), rear axle housing (43), front shaft sleeve (42), rear axle housing (43) are fixed on described machineFrame (33); Wherein the axle center of the hinged swing of each parts is all parallel with described upper axle (1).
6. the sewing machine of top and bottom feed according to claim 5, is characterized in that described swing panel seat (26) is hingedOne end of the connecting rod of falling feeding (21) connects swing panel seat back-moving spring (34).
7. the sewing machine of top and bottom feed according to claim 1 or 5, is characterized in that described upper feed regulationComprise differential feed fork-shaped crank (44), the front crank (46) of differential feed, differential feed slider pin (45), differential feed balance staff(47), differential feed pendulum axle sleeve (48), differential feed fork (52), differential feed fork cover (49), fork slider pin (50),Differential feed fork slide block (51), presser feet motion saddle (54), differential feed swing link pin (53), differential feed tooth (55),Described differential feed fork-shaped crank (44) one end is fixedly connected with described differential feed axle (41), and the other end is provided with fork-shaped notch, forkIn shape notch, be provided with the described differential feed slider pin (45) of slidable adjustment, before described differential feed crank (46) one end be provided withThe bar shaped slide opening (4601) that described differential feed slider pin (45) coordinates, before differential feed, crank (46) other end is fixedly connected withDescribed differential feed balance staff (47) one end, and the axle center of differential feed balance staff (47) and described differential feed slider pin (45)Parallel, differential feed balance staff (47) the described differential feed pendulum axle sleeve of outside socket (48), differential feed pendulum axle sleeve (48) is fixingIn described frame (33); The other end of differential feed balance staff (47) is vertically fixedly connected with differential feed fork cover (49), differentialThe described differential feed fork (52) that slip is set in feeding fork cover (49), the bar portion of differential feed fork (52) is provided with footpathTo pin-and-hole, pin-and-hole connects described fork slider pin (50), differential feed fork cover (49) is provided with and fork slider pin (50)Two ends coordinate and make the slide opening (4901) of differential feed fork (52) spacing slip vertically, differential feed swing link pin (53) twoEnd stretches out respectively slide opening (4901) and is fixedly connected with differential feed fork slide block (51), two differential feed fork slide blocks (51) pointThe other guide hole (5401) being provided with described presser feet motion saddle (54) both sides, one end is slidably matched, and this guide hole (5401) sideTo adapting with swaying direction and the oscillating stroke of stroke and differential feed fork (52), described in presser feet motion guide frame is fixed onFrame (33), the hinged differential feed tooth of described differential feed fork (52) other end (55); Wherein each parts hinged swingAxle center is all parallel with described upper axle (1).
8. the sewing machine of top and bottom feed according to claim 7, is characterized in that described differential feed slider pin (45)Formed by the shank slide block that is threaded, and expand and lock onto differential feed fork-shaped crank under the effect that is threaded at shank of slide block(44) in fork-shaped notch.
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| CN201410442503.4A CN104233644B (en) | 2014-09-02 | 2014-09-02 | The sewing machine of top and bottom feed |
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| CN201410442503.4A CN104233644B (en) | 2014-09-02 | 2014-09-02 | The sewing machine of top and bottom feed |
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| CN104233644B true CN104233644B (en) | 2016-05-11 |
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| CN112626733B (en) * | 2019-09-24 | 2022-11-22 | 杰克科技股份有限公司 | Feed lifting height adjusting method for sewing machine |
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