CN104233644A - Sewing machine for up-down differential feeding - Google Patents
Sewing machine for up-down differential feeding Download PDFInfo
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- CN104233644A CN104233644A CN201410442503.4A CN201410442503A CN104233644A CN 104233644 A CN104233644 A CN 104233644A CN 201410442503 A CN201410442503 A CN 201410442503A CN 104233644 A CN104233644 A CN 104233644A
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Abstract
The invention relates to a sewing machine for up-down differential feeding. The sewing machine comprises a secondary feeding adjusting mechanism, a feeding shaft and a feed lifting rock shaft, wherein the secondary feeding adjusting mechanism comprises a lower differential feeding adjusting crank and a first tooth frame seat which are fixed on the feeding shaft, a lower differential feeding crank which movably sleeves the feeding shaft and a lower differential transmission crank which movably sleeves the feed lifting rock shaft; the first tooth frame seat is connected with a feeding tooth; the lower differential feeding crank is connected with a lower differential feeding tooth; the lower differential feeding adjusting crank, a first lower differential feeding connecting rod, the lower differential transmission crank, a second lower differential feeding connecting rod and the lower differential feeding crank are hinged and linked in sequence; the hinging position between the lower differential feeding adjusting crank and the first lower differential feeding connecting rod is adjustable. The hinging position is adjusted so that a force arm relation between the lower differential feeding adjusting crank and the first lower differential feeding connecting rod is changed and a relation of swinging and transferring the feeding shaft to the feeding tooth and the lower differential feeding tooth is changed, namely the lower differential feeding adjustment is realized.
Description
Technical field
The present invention relates to Sewing machines, is a kind of Sewing machines of top and bottom feed.
Background technology
One or more sewing thread used by Sewing machines, and sewing is formed one or more stitchings, makes the machine that one or more layers sewing interweaves or unites 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 sewing technology, but integrates the modernization stitching process of sewing and various modeling function.As the Authorization Notice No. CN200967877Y that Chinese patent literature is published, authorized announcement date on October 31st, 2007, utility model name is called " differential material feeding device of Sewing machines ", it comprises is located at feeding retainer on sewing machine frame and differential retainer, feeding retainer and differential retainer are respectively equipped with feeding tooth and differential tooth, Sewing machines is also provided with power spindle and power transmission shaft, power spindle drives drive axis by transmission mechanism, be provided with when drive axis can make the feed mechanism of feeding retainer translation in frame between power transmission shaft and above-mentioned feeding retainer, be provided with between power transmission shaft and differential retainer when drive axis can make the differential attachment of feeding retainer translation in frame.By said structure, thus realize Sewing machines differential feed.
Also just like the Authorization Notice No. CN101792956B that Chinese patent literature is published, authorized announcement date on November 14th, 2012, denomination of invention is " on the Sewing machines with contraction joint function differential feed mechanism and use the upper feeding of this mechanism to crumple mechanism ".It comprises pads swing axis, crank, presser feet wobble crank, cloth pushing shaft, cloth feeding crank, crank connecting link, presser feet connecting rod I, presser feet connecting rod II, outer presser feet; Also comprise and regulate fork axle; Be installed on and regulate on fork axle and the adjustment fork axle of adjustable adjustment plate stem axle swing, regulate 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.On this, differential feed mechanism is by changing the cloth feed amount of outer presser feet, reaches the effect of differential contraction joint, is interacted by outer presser feet and rear presser feet, forms fold.
Above two pieces patent document is all the forms utilizing upper differential feed, reaches required sewing efficiency.But do not disclose the structure that relevant allowance below nominal size moves feeding, if a kind of structure of lower differential feed can be designed, and it is combined with upper differential feed, then can reaches better sewing efficiency.Therefore need to be regulated existing Sewing machines differential feed to improve.
Summary of the invention
For overcoming above-mentioned deficiency, the object of the invention is the Sewing machines providing a kind of top and bottom feed to this area, making it solve existing like product does not have the function simultaneously possessing upper differential feed and lower differential feed, the technical problem that sewing pattern is not good enough.Its objective is and to be achieved through the following technical solutions.
A kind of Sewing machines of top and bottom feed, this Sewing machines 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 feed mechanism comprises main feed regulation, secondary feed regulation, feed spool, feed lifting rock shaft, upper axle is as driving shaft, and rotation is positioned frame, upper axle is in transmission connection differential feed axle, feed spool respectively, differential feed axle two ends and feed spool two ends are all socketed axle sleeve, and axle sleeve is fixed on frame.Its structural feature is that described secondary feed regulation comprises lower differential feed and regulates crank, lower differential driving crank, first time differential feed connecting rod, second time differential feed connecting rod, first retainer seat, feeding tooth, lower differential feed crank, lower differential feed tooth, first feed lifting rock fork-shaped crank, second feed lifting rock fork-shaped crank, described lower differential feed regulates crank one end and the first retainer seat to be all fixed on described feed spool, 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 driving crank 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 first time 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 regulates crank locking positioning by connection locking member and described lower differential feed, described first time differential feed connecting rod other end by have strong market potential simultaneously with described second time differential feed connecting rod one end and the described lower differential driving crank other end hinged, second time differential feed connecting rod other end and the described lower differential feed crank other end hinged, described first retainer seat hinged feeding tooth one end, the fork-shaped notch activity that the feeding tooth other end and the described first feed lifting rock fork-shaped crank other end are provided with coordinates in hinged slip, one end that described lower differential feed crank and feed spool are socketed is provided with the second retainer seat, second hinged lower differential feed tooth one end of retainer seat, the fork-shaped notch activity that the lower differential feed tooth other end and the described second feed lifting rock fork-shaped crank other end are provided with coordinates in hinged slip, wherein the axle center of the hinged swing of each parts is all parallel with described upper axle.
By regulating on crank at lower differential feed, adjustment hole is set, and first time differential feed connecting rod and lower differential feed are regulated the mode being designed to locking member between crank and locking, thus conveniently lower differential feed is regulated to regulate articulated position between crank and first time differential feed connecting rod.Simultaneously, by the change of this articulated position, thus change the linkage status that lower differential feed regulates crank and first time differential feed connecting rod, namely the amplitude of oscillation of first time differential feed connecting rod is changed, and the amplitude of oscillation change of first time differential feed connecting rod, and then the amplitude of oscillation of linked second time differential feed connecting rod and lower differential feed crank.The amplitude of oscillation change of lower differential feed crank changes again the horizontal movement stroke of lower differential feed tooth, thus make the relative horizontal movement stroke alteration of lower differential feed tooth and feeding tooth, achieve lower differential feed to regulate, regulative mode is comparatively simple, flexibly, differential work is comparatively reliable.
The position that described lower differential feed regulates crank, first time differential feed connecting rod, second time differential feed connecting rod, lower differential driving crank link each other is all positioned at below described feed spool, feed lifting rock shaft, and the position that described first retainer seat, feeding tooth, the second retainer seat, differential feed tooth link each other is all positioned at above described feed spool, feed lifting rock shaft.This space layout can adapt to the mechanical layout of existing all kinds of Sewing machines, facilitates retrofit application.
Described lower differential driving crank and described lower differential feed regulate crank to exchange installation site, namely described feed spool is fixed in lower differential driving crank one end, lower differential feed regulates feed lifting rock shaft described in the pivot bush unit of crank one end, lower hinged described first time differential feed connecting rod one end of the differential driving crank other end, first time differential feed connecting rod other end by crank-pin simultaneously with the adjustment hole of described lower differential driving crank and second time differential feed connecting rod one end hinged, this crank-pin and described adjustment hole are slidably matched, and swivel pin regulates crank locking positioning by connection locking member and described lower differential feed.By program structure, the adjustment of lower differential feed also can be realized.
Described lower differential feed regulates the adjustment hole of crank to be straight nibs or curved hole.Adjustment hole can be arranged arbitrarily as required.
Described main feed regulation comprises 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 swings panel seat, the short oscillating deck of differential feed, the long oscillating deck of differential feed, differential feed connecting rod, differential feed rear crank, differential feed axle, described stitch length knob is fixed on feeding adjusting screw(rod) one end, feeding adjusting screw(rod) and described frame threaded engagement, the arc-shaped concave of the feeding adjusting screw(rod) other end and described feeding adjusting block side offsets, the hinged described connecting rod of falling feeding one end of opposite side of feeding adjusting block, locating shaft is passed through at middle part between feeding adjusting block both sides, positioning shaft sleeve activity orientation is in described frame, the side of the described connecting rod of the falling feeding other end and described swing panel seat one end is hinged, swings the short oscillating deck one end of the hinged described feeding of the panel seat other end, and the middle part between swing panel seat two ends is by alignment pin and described frame activity orientation, the feeding short oscillating deck other end is the long oscillating deck one end of hinged feeding and feeding connecting rod one end simultaneously, feeding connecting rod other end pivot bush unit feeding eccentric wheel, feeding eccentric wheel is fixedly connected with described upper axle, the feeding long oscillating deck other end hinged feeding crank one end, the feeding crank other end is fixedly connected with described feed spool, hinged synchronising (connecting) rod one end of opposite side of the described swing panel seat hinged connecting rod of falling feeding one end, the hinged differential feed of the synchronising (connecting) rod other end swings panel seat one end, differential feed swings the short oscillating deck one end of the hinged differential feed of the panel seat other end, and the middle part between differential feed swing panel seat two ends is by alignment pin and described frame activity orientation, the differential feed short oscillating deck other end is hinged differential feed connecting rod one end and the long oscillating deck one end of differential feed simultaneously, differential feed connecting rod other end pivot bush unit differential feed eccentric wheel, differential feed eccentric wheel is fixedly connected with described feed spool, the described differential feed long oscillating deck other end hinged differential feed rear crank one end, the differential feed rear crank other end is fixedly connected with differential feed axle one end, differential feed axle pivot bush unit 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 is all parallel with described upper axle.
This main feed regulation, in fact by positive and negative rotation stitch length knob, thus the state that change feeding adjusting screw(rod) and feeding adjusting block offset, namely the angle position of feeding adjusting block is changed, feeding adjusting block action and then interlock batch turning connecting rod, swing panel seat, the long oscillating deck of feeding, the short oscillating deck of feeding, feeding crank, feed spool, the amplitude of fluctuation of feed spool is changed, and feed spool amplitude of fluctuation changes, thus can change the horizontal movement stroke of lower differential feed tooth and feeding tooth.Simultaneously, swing panel seat and swing panel seat, the short oscillating deck of differential feed, the long oscillating deck of differential feed, differential feed connecting rod, differential feed rear crank, differential feed axle by synchronising (connecting) rod interlock differential feed, the amplitude of oscillation of differential feed axle is changed, and then changes the horizontal movement stroke of differential feed tooth.Namely the regulatory function of this main feed regulation is realized.
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, crank before differential feed, differential feed slider pin, differential feed balance staff, differential feed pendulum axle sleeve, differential feed fork, differential feed fork cover, oscillating block slider pin, differential feed oscillating block slider, presser feet motion saddle, differential feed swing link pin, differential feed tooth, described differential feed fork-shaped crank one end is fixedly connected with described differential feed axle, the other end is provided with fork-shaped notch, the described differential feed slider pin of slidable adjustment is provided with in fork-shaped notch, before described differential feed, crank one end is provided with the bar shaped slide opening coordinated with described differential feed slider pin, before differential feed, the crank other end 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, the described differential feed pendulum axle sleeve of differential feed balance staff outside socket, differential feed pendulum axle sleeve is fixed on described frame, the other end of differential feed balance staff is 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 radial pin-and-hole, pin-and-hole connects described oscillating block slider pin, differential feed fork is arranged with and coordinates with oscillating block slider pin two ends and to make the slide opening of differential feed fork spacing slip vertically, differential feed swing link pin two ends are stretched out slide opening respectively and are fixedly connected with differential feed oscillating block slider, the guide hole that two differential feed oscillating block slider are provided with both sides, described presser feet motion saddle one end is respectively slidably matched, and the swaying direction of this guide hole direction and stroke and differential feed fork and oscillating stroke 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 the axle center of the hinged swing of each parts is all parallel with described upper axle.
The adjustment of feed regulation on this, mainly by regulating the position of differential feed slider pin in fork-shaped notch, thus the articulated position before changing differential feed fork-shaped crank and differential feed between crank, namely before differential feed fork-shaped crank and differential feed, the torque arm length of crank changes, thus the amplitude of fluctuation of crank changes before making differential feed, before differential feed, the amplitude of fluctuation of crank changes, the final horizontal movement stroke changing differential feed tooth, namely realizes the adjustment of upper differential feed.
Described differential feed slider pin is made up of the shank slide block that is threaded, and slide block expand under the effect that shank is threaded lock onto differential feed fork-shaped crank fork-shaped notch in.
The present invention, in conjunction with reasonable in design, add lower differential feed on the basis of existing technology and regulates, and coordinates upper differential feed to regulate, the sewing technology of more Suresh Kumar can be realized, sewing efficiency is better, be suitable as upper and lower differential sewing machine and use, or the structure of similar Sewing machines is improved.
Accompanying drawing explanation
Fig. 1 is the partial structurtes schematic diagram that the main feed regulation of the present invention and secondary feed regulation combine.
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 that in the present invention, feed regulation and main feed regulation combine.
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 local 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 feed connecting rod, 6, second time differential feed connecting rod, 7, lower differential driving crank, 701, have strong market potential, 8, lower differential feed regulates crank, and 801, adjustment hole, 9, first retainer seat, 10, feeding tooth, 11, lower differential feed crank, 1101, second retainer seat, 12, needle plate, 13, lower differential feed tooth, 14, first feed lifting rock fork-shaped crank, 15, 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 handle of buckling, 29, the spanner of falling feeding, 30, the crank of falling feeding, 31, the spanner of falling feeding 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, and 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, oscillating block slider pin, 51, differential feed oscillating block slider, 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 mainly designs a kind ofly has Sewing machines differential up and down, especially designs the governor motion in the upper and lower differential feed mechanism in this Sewing machines.Governor motion comprises feed regulation, main feed regulation, secondary feed regulation, and wherein secondary feed regulation is emphasis mechanism of the present invention, and it can realize separately the adjustment of differential feed under Sewing machines.This secondary feed regulation comprises lower differential feed and regulates crank 8, lower differential driving crank 7, first time differential feed connecting rod 5, second time differential feed connecting rod 6, first retainer seat 9, feeding tooth 10, lower differential feed crank 11, lower differential feed tooth 13, first feed lifting rock fork-shaped crank 14, 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 on feed spool 2, lower differential feed crank 11 one end and feed spool 2 pivot bush unit are position rotating, feed lifting rock shaft 3 is all fixed in first feed lifting rock fork-shaped crank 14 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 pivot bush unit are position rotating.Lower differential feed regulates crank 8 to be provided with the adjustment hole 801 of strip along crank direction, and lower differential feed regulates crank 8 to be provided with the mark facilitating adjustment operation.First time differential feed connecting rod 5 one end is flexibly connected crank-pin 4, this crank-pin 4 is slidably matched with adjustment hole 801, and crank-pin 4 one end connects locking nut through adjustment hole 801, crank-pin 4 and lower differential feed is made to regulate crank 8 locking positioning by locking nut.First time differential feed connecting rod 5 other end by have strong market potential 701 simultaneously with second time differential feed connecting rod 6 one end and lower differential driving crank 7 other end hinged, second time differential feed connecting rod 6 other end and lower differential feed crank 11 other end hinged.First retainer seat 9 hinged feeding tooth 10 one end, the fork-shaped notch activity that feeding tooth 10 other end and first feed lifting rock fork-shaped crank 14 other end are provided with coordinates in hinged slip, one end that lower differential feed crank 11 and feed spool 2 are socketed is provided with the second retainer seat 1101, second hinged lower differential feed tooth 13 one end of retainer seat 1101, the fork-shaped notch activity that lower differential feed tooth 13 other end and second feed lifting rock fork-shaped crank 15 other end are provided with coordinates in hinged slip.The position that 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 to link each other is all positioned at below feed spool 2, feed lifting rock shaft 3, and the position that the first retainer seat 9, feeding tooth 10, second retainer seat 1101, lower differential feed tooth 13 link each other is all positioned at above feed spool 2, feed lifting rock shaft 3.Feeding tooth 10, lower differential feed tooth 13 are all positioned needle plate 12 downside, and needle plate 12 is fixed on frame 33.The axle center of the hinged swing of above-mentioned each parts is all parallel with upper axle 1, and upper axle 1 and feed spool 2, feed lifting rock shaft 3 are parallel, and the equal pivot bush unit axle sleeve 25 in feed spool 2 two ends and feed lifting rock shaft 3 two ends, axle sleeve 25 is fixed on the frame 33 of Sewing machines.Upper axle 1 rotates and is positioned frame 33, and the motor that is in transmission connection.Feed lifting rock shaft 3 is fixedly connected with lifts handle 28 of buckling, and lifts that handle 28 of buckling is hinged lifts tooth connecting rod 27 one end, lifts tooth connecting rod 27 other end pivot bush unit and lifts pressure eccentric wheel, lifts pressure eccentric wheel and is 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(positive and negative rotation) swing, drive lower differential feed to regulate crank 8 swing and the first retainer seat 9 to swing, the first retainer seat 9 swings the fork-shaped notch direction reciprocating motion driving feeding tooth 10 along the first feed lifting rock fork-shaped crank 14.Lower differential feed regulates crank 8 to drive first time differential feed connecting rod 5, lower differential driving crank 7, second time differential feed connecting rod 6, lower differential feed crank 11 to swing, and lower differential feed crank 11 swings the fork-shaped notch direction reciprocating motion driving lower differential feed tooth 13 along the second feed lifting rock fork-shaped crank 15.When the position regulating crank-pin 4 in adjustment hole 801, namely adjustment first time differential feed connecting rod 5 and lower differential feed regulate the articulated position between crank 8, thus change lower differential feed adjustment crank 8 and first time differential torque arm length sending two connecting rods, make to form three kinds of states between the stroke of the reciprocating stroke of feeding tooth 10 and the reciprocating action of lower differential feed tooth 13, be respectively: the reciprocating stroke of feeding tooth 10 is less than the reciprocating stroke of lower differential feed tooth 13, the reciprocating stroke of feeding tooth 10 equals the reciprocating stroke of lower differential feed tooth 13, the reciprocating stroke of feeding tooth 10 is greater than the reciprocating stroke of lower differential feed tooth 13, thus realize lower feeding " crumpling ", " synchronously ", " contracting wrinkle " three kinds of different sewing functions.
In above-mentioned secondary feeding adjustment structure, lower differential driving crank 7 regulates crank 8 also commutative installation site with lower differential feed.Namely feed spool 2 is fixed in lower differential driving crank 7 one end, lower differential feed regulates crank 8 one end pivot bush unit feed lifting rock shaft 3, lower hinged first time differential feed connecting rod 5 one end of differential driving crank 7 other end, first time differential feed connecting rod 5 other end by crank-pin 4 simultaneously with the adjustment hole 801 of lower differential driving crank 7 and second time differential feed connecting rod 6 one end hinged, this crank-pin 4 is slidably matched with adjustment hole 801, and swivel pin regulates crank 8 locking positioning by connection locking member and lower differential feed.
Main feed regulation comprises 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, differential feed 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 and frame 33 threaded engagement, the arc-shaped concave of feeding adjusting screw(rod) 18 other end and feeding adjusting block 19 side offsets, the opposite side hinged connecting rod of falling feeding 21 one end of feeding adjusting block 19, locating shaft is passed through at middle part between feeding adjusting block 19 both sides, positioning shaft sleeve 20 activity orientation is in frame 33, the connecting rod of falling feeding 21 other end is hinged with the side swinging panel seat 26 one end, and swing this end of panel seat 26 and be also connected with swing panel seat back-moving spring 34, back-moving spring is fixedly connected with frame 33.Swing the hinged feeding of panel seat 26 other end short oscillating deck 24 one end, the middle part between swing panel seat 26 two ends is by alignment pin and frame 33 activity orientation.Feeding short oscillating deck 24 other end is hinged feeding long oscillating deck 23 one end and feeding connecting rod 16 one end simultaneously, and feeding connecting rod 16 other end pivot bush unit feeding eccentric wheel 1601, feeding eccentric wheel 1601 is fixedly connected with axle 1.Feeding long oscillating deck 23 other end hinged feeding crank 22 one end, feeding crank 22 other end is fixedly connected with feed spool 2.Swing opposite side hinged synchronising (connecting) rod 36 one end of the panel seat 26 hinged connecting rod of falling feeding 21 one end, the hinged differential feed of synchronising (connecting) rod 36 other end swings panel seat 37 one end, differential feed swings the hinged differential feed of panel seat 37 other end short oscillating deck 39 one end, and the middle part between differential feed swing panel seat 37 two ends is by alignment pin and frame 33 activity orientation.Differential feed short oscillating deck 39 other end is hinged differential feed connecting rod 35 one end and differential feed long oscillating deck 38 one end simultaneously, differential feed connecting rod 35 other end pivot bush unit differential feed eccentric wheel 3501, differential feed eccentric wheel 3501 is fixedly connected with feed spool 2, differential feed long oscillating deck 38 other end hinged differential feed rear crank 40 one end, differential feed rear crank 40 other end is fixedly connected with differential feed axle 41 one end, differential feed axle 41 pivot bush unit front shaft sleeve 42, rear axle housing 43, front shaft sleeve 42, rear axle housing 43 are fixed on frame 33.
The feed mechanism that falls associated with the above-mentioned connecting rod of falling feeding 21 is also comprised in above-mentioned main feed regulation, the feed mechanism that falls comprises 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 29 connects the crank of falling feeding 30 by the spanner of falling feeding 29 axle, the spanner of the falling feeding 29 axle outside socket spanner of falling feeding axle sleeve 31, the spanner of falling feeding axle sleeve 31 is fixedly connected with frame 33, the crank of falling feeding 30 with send the hook part in the middle part of connecting rod to be linked.When the spanner of falling feeding 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 feeding 21 link to feed spool 2 swing pivot angle change, make feeding tooth 10, the respective reciprocating direction of lower differential feed tooth 13 on the contrary, what realize Sewing machines backstitches operation.
The Principles of Regulation of main feed regulation are: by positive and negative rotation stitch length knob 17, stitch length knob 17 drives feeding adjusting screw(rod) 18 to rotate and stretches along frame 33, the arc-shaped concave of feeding adjusting screw(rod) 18 end and feeding adjusting block 19 side is formed and links, feeding adjusting block 19 is along locating shaft, positioning shaft sleeve 20 rotates, the feeding adjusting block 19 opposite side interlock connecting rod of falling feeding 21, the connecting rod of falling feeding 21 drives swing panel seat 26 to swing along its alignment pin, swing panel seat 26 and then the short oscillating deck 24 of interlock feeding, feeding connecting rod 16, the long oscillating deck 23 of feeding, feeding crank 22, feed spool 2, the arm of force between them is changed, thus realize feed spool 2(positive and negative rotation) adjustment of amplitude of fluctuation, namely the feeding tooth 10 that feed spool 2 links is changed, the movement travel of lower differential feed tooth 13, realize lower differential feed to regulate.Simultaneously, when swing panel seat 26 swings, also by synchronising (connecting) rod 36 link differential feed swing panel seat 37, differential feed swings panel seat 37 and swings along its alignment pin, and then the short oscillating deck of interlock differential feed 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 differential feed axle 41(positive and negative rotation) adjustment of amplitude of fluctuation, thus changing the sports stroke of the differential feed tooth 55 that differential feed axle 41 links, in realization, differential feed regulates.Namely main feed regulation regulates while realizing upper differential feed, lower differential feed.
Upper feed regulation comprises 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, oscillating block slider pin 50, differential feed oscillating block slider 51, presser feet motion saddle 54, differential feed swing link pin 53, differential feed tooth 55.Differential feed fork-shaped crank 44 one end is fixedly connected with differential feed axle 41, the other end is provided with fork-shaped notch, the differential feed slider pin 45 of slidable adjustment is provided with in fork-shaped notch, differential feed slider pin 45 is made up of the shank slide block that is threaded, and slide block expand under the effect that shank is threaded lock onto differential feed fork-shaped crank 44 fork-shaped notch in.Before differential feed, crank 46 one end is provided with the bar shaped slide opening 4601 coordinated with differential feed slider pin 45 shank, before differential feed, crank 46 other end is fixedly connected with differential feed balance staff 47 one end, and the axis parallel of differential feed balance staff 47 and differential feed slider pin 45, differential feed balance staff 47 outside 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 is vertically fixedly connected with differential feed fork cover 49, the differential feed fork 52 of slip is set in differential feed fork cover 49, the bar portion of differential feed fork 52 is provided with radial pin-and-hole, pin-and-hole connects oscillating block slider pin 50, differential feed fork cover 49 is provided with and coordinates with oscillating block slider pin 50 two ends and to 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 slide opening 4901 respectively and are fixedly connected with differential feed oscillating block slider 51, the guide hole 5401 that two differential feed oscillating block slider 51 are provided with both sides, presser feet motion saddle 54 one end is respectively slidably matched, and this guide hole 5401 direction and stroke adapt with the swaying direction of differential feed fork 52 and oscillating 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 adjustment of feed regulation on this, mainly by regulating the position of differential feed slider pin 45 in fork-shaped notch, thus the articulated position before changing differential feed fork-shaped crank 44 and differential feed between crank 46, namely before differential feed fork-shaped crank 44 and differential feed, the torque arm length of crank 46 changes, thus the amplitude of fluctuation of crank 46 changes before making differential feed, before differential feed, the amplitude of fluctuation of crank 46 changes, the horizontal movement stroke of final change differential feed tooth 55, namely realizes the adjustment 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 feed axle 41(positive and negative rotation) swing and drive differential feed fork-shaped crank 44 to swing, before differential feed fork-shaped crank 44 drives differential feed by differential feed slider pin 45, crank 46 swings, before differential feed, crank 46 drives the positive and negative rotation of differential feed balance staff 47, differential feed balance staff 47 drives that differential feed fork overlaps 49, differential feed fork 52 swings, differential feed fork 52 drive differential feed tooth 55 along predetermined stroke and direction reciprocating.When changing the position of above-mentioned differential feed slider pin 45 in differential feed fork-shaped crank 44 fork-shaped notch, also change in the bar shaped slide opening 4601 of differential feed slider pin 45 crank 46 before differential feed, thus the articulated position of crank 46 before changing differential feed fork-shaped crank 44 and differential feed, the arm of force is between the two changed, finally make the movement travel of differential feed tooth 55 change, namely realize the adjustment of upper differential feed.Also " crumpling ", " synchronous ", " contract and wrinkle " three kinds of states of sewing can be formed between upper differential feed adjustment regulates with main feeding.
When upper differential feed regulate, main feeding regulates, secondary feeding regulate with the use of time, different sewing forms can be formed, to reach required sewing efficiency.
Above content is intended to technological means of the present invention is described, and unrestricted technical scope of the present invention.Those skilled in the art do apparent improvement in conjunction with existing common practise to the present invention, within the protection domain also falling into the claims in the present invention.
Claims (8)
1. the Sewing machines of a top and bottom feed, this Sewing machines comprises frame (33), upper differential feed mechanism, lower differential feed 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) is as driving shaft, and rotation is positioned frame (33), upper axle (1) is in transmission connection differential feed axle (41) respectively, 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) is parallel, feed spool (2) two ends and feed lifting rock shaft (3) two ends are all socketed axle sleeve (25), axle sleeve (25) is fixed on frame (33), it is characterized in that described secondary feed regulation comprises lower differential feed and regulates crank (8), lower differential driving crank (7), first time differential feed connecting rod (5), second time differential feed connecting rod (6), first retainer seat (9), feeding tooth (10), lower differential feed crank (11), lower differential feed tooth (13), first feed lifting rock fork-shaped crank (14), second feed lifting rock fork-shaped crank (15), described lower differential feed regulates crank (8) one end and the first retainer seat (9) to be all fixed on described feed spool (2), described lower differential feed crank (11) one end and feed spool (2) pivot bush unit are position rotating, described feed lifting rock shaft (3) is all fixed in described first feed lifting rock fork-shaped crank (14) one end and the second feed lifting rock fork-shaped crank (15) one end, described lower differential driving crank (7) one end and described feed lifting rock shaft (3) pivot bush unit are 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), this crank-pin (4) and described adjustment hole (801) are slidably matched, and crank-pin (4) regulates crank (8) locking positioning by connection locking member and described lower differential feed, described first time differential feed connecting rod (5) other end by have strong market potential (701) simultaneously with described second time differential feed connecting rod (6) one end and described lower differential driving crank (7) other end hinged, second time differential feed connecting rod (6) other end and described lower differential feed crank (11) other end hinged, described first retainer seat (9) hinged feeding tooth (10) one end, the fork-shaped notch activity that feeding tooth (10) other end and described first feed lifting rock fork-shaped crank (14) other end are provided with coordinates in hinged slip, one end that described lower differential feed crank (11) and feed spool (2) are socketed is provided with the second retainer seat (1101), second hinged lower differential feed tooth (13) one end of retainer seat (1101), the fork-shaped notch activity that lower differential feed tooth (13) other end and described second feed lifting rock fork-shaped crank (15) other end are provided with coordinates in hinged slip, wherein the axle center of the hinged swing of each parts is parallel with described upper axle (1).
2. the Sewing machines of top and bottom feed according to claim 1, it 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), the mutual position of linking of lower differential driving crank (7) are all positioned at described feed spool (2), feed lifting rock shaft (3) below, the position of the mutual interlock of described first retainer seat (9), feeding tooth (10), the second retainer seat (1101), differential feed tooth (55) is all positioned at above described feed spool (2), feed lifting rock shaft (3).
3. the Sewing machines of top and bottom feed according to claim 1, it is characterized in that described lower differential driving crank (7) and described lower differential feed regulate crank (8) to exchange installation site, namely described feed spool (2) is fixed in lower differential driving crank (7) one end, lower differential feed regulates feed lifting rock shaft (3) described in the pivot bush unit of crank (8) one end, lower hinged described first time differential feed connecting rod (5) one end of differential driving crank (7) other end, first time differential feed connecting rod (5) other end by crank-pin (4) simultaneously with the adjustment hole (801) of described lower differential driving crank (7) and second time differential feed connecting rod (6) one end hinged, this crank-pin (4) and described adjustment hole (801) are slidably matched, and crank-pin (4) regulates crank (8) locking positioning by connection locking member and described lower differential feed.
4. the Sewing machines of top and bottom feed according to claim 1, is characterized in that described lower differential feed regulates the adjustment hole (801) of crank (8) to be straight nibs or curved hole.
5. the Sewing machines of top and bottom feed according to claim 1, is characterized in that described main feed regulation comprises 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 swings panel seat (37), the short oscillating deck of differential feed (39), the long oscillating deck of differential feed (38), differential feed connecting rod (35), differential feed rear crank (40), differential feed axle (41), described stitch length knob (17) is fixed on feeding adjusting screw(rod) (18) one end, feeding adjusting screw(rod) (18) and described frame (33) threaded engagement, the arc-shaped concave of feeding adjusting screw(rod) (18) other end and described feeding adjusting block (19) side offsets, the hinged described connecting rod of falling feeding (21) one end of opposite side of feeding adjusting block (19), locating shaft is passed through at the middle part between feeding adjusting block (19) both sides, positioning shaft sleeve (20) activity orientation is in described frame (33), the side of the described connecting rod of falling feeding (21) other end and described swing panel seat (26) one end is hinged, swing the hinged described feeding of panel seat (26) other end short oscillating deck (24) one end, the 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) other end is the long oscillating deck of hinged feeding (23) one end and feeding connecting rod (16) one end simultaneously, feeding connecting rod (16) other end pivot bush unit feeding eccentric wheel (1601), feeding eccentric wheel (1601) is fixedly connected with described upper axle (1), the long oscillating deck of feeding (23) other end hinged feeding crank (22) one end, feeding crank (22) other end is fixedly connected with described feed spool (2), the hinged synchronising (connecting) rod of opposite side (36) one end of described swing panel seat (26) the hinged connecting rod of falling feeding (21) one end, the hinged differential feed of synchronising (connecting) rod (36) other end swings panel seat (37) one end, differential feed swings the hinged differential feed of panel seat (37) other end short oscillating deck (39) one end, and 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 is hinged differential feed connecting rod (35) one end and the long oscillating deck of differential feed (38) one end simultaneously, differential feed connecting rod (35) other end pivot bush unit differential feed eccentric wheel (3501), differential feed eccentric wheel (3501) is fixedly connected with described feed spool (2), the long oscillating deck of described differential feed (38) other end hinged differential feed rear crank (40) one end, differential feed rear crank (40) other end is fixedly connected with differential feed axle (41) one end, differential feed axle (41) pivot bush unit front shaft sleeve (42), rear axle housing (43), front shaft sleeve (42), rear axle housing (43) is fixed on described frame (33), wherein the axle center of the hinged swing of each parts is all parallel with described upper axle (1).
6. the Sewing machines of top and bottom feed according to claim 5, is characterized in that one end of the hinged connecting rod of falling feeding of described swing panel seat (26) (21) connects and swings panel seat back-moving spring (34).
7. the Sewing machines of top and bottom feed according to claim 1 or 5, it is characterized in that described upper feed regulation comprises differential feed fork-shaped crank (44), crank (46) before 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), oscillating block slider pin (50), differential feed oscillating block slider (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), the other end is provided with fork-shaped notch, the described differential feed slider pin (45) of slidable adjustment is provided with in fork-shaped notch, before described differential feed, crank (46) one end is provided with the bar shaped slide opening (4601) coordinated with described differential feed slider pin (45), before differential feed, crank (46) other end is fixedly connected with described differential feed balance staff (47) one end, and the axis parallel of differential feed balance staff (47) and described differential feed slider pin (45), the described differential feed pendulum axle sleeve (48) of differential feed balance staff (47) outside socket, differential feed pendulum axle sleeve (48) is fixed on described frame (33), the other end of differential feed balance staff (47) is vertically fixedly connected with differential feed fork cover (49), the described differential feed fork (52) of slip is set in differential feed fork cover (49), the bar portion of differential feed fork (52) is provided with radial pin-and-hole, pin-and-hole connects described oscillating block slider pin (50), differential feed fork cover (49) is provided with and coordinates with oscillating block slider pin (50) two ends and to make the slide opening (4901) of differential feed fork (52) spacing slip vertically, differential feed swing link pin (53) two ends are stretched out slide opening (4901) respectively and are fixedly connected with differential feed oscillating block slider (51), the guide hole (5401) that two differential feed oscillating block slider (51) are provided with described presser feet motion saddle (54) both sides, one end is respectively slidably matched, and the swaying direction of this guide hole (5401) direction and stroke and differential feed fork (52) and oscillating stroke adapt, presser feet motion guide frame is fixed on described frame (33), the hinged differential feed tooth (55) of described differential feed fork (52) other end, wherein the axle center of the hinged swing of each parts is all parallel with described upper axle (1).
8. the Sewing machines of top and bottom feed according to claim 7, it is characterized in that described differential feed slider pin (45) is made up of the shank slide block that is threaded, and slide block expand under the effect that shank is threaded lock onto differential feed fork-shaped crank (44) fork-shaped notch in.
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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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| CN105734841A (en) * | 2014-12-08 | 2016-07-06 | 曾贤长 | Sewing machine cloth feeding tooth differential mechanism |
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| CN105734841A (en) * | 2014-12-08 | 2016-07-06 | 曾贤长 | Sewing machine cloth feeding tooth differential mechanism |
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| CN107723932B (en) * | 2017-11-03 | 2019-12-03 | 杰克缝纫机股份有限公司 | A kind of flat seaming machine and its differential cloth feeding mechanism |
| CN107723932A (en) * | 2017-11-03 | 2018-02-23 | 杰克缝纫机股份有限公司 | A kind of flat seaming machine and its differential cloth feeding mechanism |
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| CN108796841A (en) * | 2018-06-29 | 2018-11-13 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN108611769A (en) * | 2018-06-29 | 2018-10-02 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
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| CN112626733A (en) * | 2019-09-24 | 2021-04-09 | 杰克缝纫机股份有限公司 | Feed lifting height adjusting method for sewing machine |
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