CN205011968U - Sewing machine lifts tooth feeding mechanism and sewing machine - Google Patents
Sewing machine lifts tooth feeding mechanism and sewing machine Download PDFInfo
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- CN205011968U CN205011968U CN201520772379.8U CN201520772379U CN205011968U CN 205011968 U CN205011968 U CN 205011968U CN 201520772379 U CN201520772379 U CN 201520772379U CN 205011968 U CN205011968 U CN 205011968U
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- retainer
- feed
- sewing machine
- feed lifting
- connecting rod
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Abstract
The utility model provides a sewing machine lifts tooth feeding mechanism, include first motor, second motor, retainer and fix the pay -off tooth on the retainer up end, first motor is connected with the retainer through lifting tooth mechanism, and the second motor is connected with the retainer through work feed mechanism, it includes the upper shaft that is parallel to each other and lifts tooth axis to lift tooth mechanism, the upper shaft through a drive unit with lift tooth axis and be connected, and drive and to lift tooth axis and use self axis as central line swing back and forth, it is connected with the retainer through the secondary drive unit and drives reciprocating motion about the retainer to lift tooth axis. The synchronism of rotation and the retainer of first motor between reciprocating can be guaranteed in this application, effectively avoids the skew of pay -off time point, still the greatly reduced noise. The synchronism of rotation and the retainer of first motor between reciprocating can be guaranteed in this application, effectively avoids the skew of pay -off time point.
Description
Technical field
The utility model relates to a kind of garment sewing equipment, particularly relates to a kind of sewing machine feed lifting feed mechanism and Sewing machines.
Background technology
Sewing machines is of a great variety, and comprise flat seam machine, overlock machine, chain seam machine, flat seaming machine etc., wherein the utilization rate of flat seam machine is the highest.Sewing machines comprises needle bar mechanism, hook line mechanism, thread take-up mechanism, feed mechanism, winding mechanism, feeding pressure mechanism etc., wherein, feed mechanism mainly comprise retainer, be installed in feeding tooth in the middle of retainer on upper end, for drive retainer to do to move back and forth up and down Tai Ya mechanism, for drive retainer do before and after the cloth feeding mechanism that moves back and forth and for driving the motor of Tai Ya mechanism and cloth feeding mechanism.At present, motor, Tai Ya mechanism and cloth feeding mechanism mainly contain two kinds of structures: structure one, use motor to drive Tai Ya mechanism and cloth feeding mechanism, to realize sewing function simultaneously, this structure can realize the sewing of differing needles distance by the adjustment of needle gage mechanism, but can only realize a kind of sewing track; Structure two, use two motors drive Tai Ya mechanism and cloth feeding mechanism respectively, and it freely can control cloth feed amount, therefore, it is possible to easily make various pattern.
The Chinese utility model patent being 201220361687.8 as application number discloses a kind of Sewing machines, this Sewing machines utilizes respective motor driving main shaft and cloth feeding mechanism, it comprises the upper axle, up and down conveying axis and the horizontal feed axle that be arranged in parallel, upper axle is driven by the mair motor of Sewing machines and is rotated by Timing Belt and the upper and lower conveying axis of band wheel drive, and upper and lower conveying axis drives cloth pushing table to move back and forth up and down by eccentric cam, up and down conveying arm; It also comprises a work feed motor, the work feed output shaft of this work feed motor drives horizontal feed axle clockwise or rotate counterclockwise by the first arm, the second arm, effect arm, horizontal feed axle is driven before and after cloth pushing table by connecting portion and moves back and forth, and final realization carries cloth.But, there is following defect in this Sewing machines: 1 in actual use, due to the mair motor upper shaft direct drived of Sewing machines, but upper axle first drives upper and lower conveying axis to rotate by Timing Belt and belt wheel, the conveying axis up and down rotated drives upper and lower conveying arm and cloth pushing table to move back and forth up and down by eccentric cam again, namely this Sewing machines jointly drives cloth feeding mechanism by the rotation of upper and lower conveying axis and the swing of horizontal feed axle, and upper and lower conveying axis is rear, horizontal feed axle is front, thus cause this feed mechanism inevitably more in advance than work feed time started during big needle distance when turning needle gage down, the work feed end time is delayed more, total work feed time increases larger, as when Sewing machines is turned down to 3 needle gage by 5 needle gages, the work feed time started shifts to an earlier date 10 °/360 °, the work feed end time delays 15 °/360 °, when Sewing machines is turned down to 1 needle gage by 5 needle gages, the work feed time started shifts to an earlier date 20 °/360 °, and the work feed end time delays 25 °/360 °, the work feed time started can cause take-up bad in advance, and the work feed end time is delayed and can cause broken needle fault, thus affects sewing quality.When 2, adopting Timing Belt and belt wheel transmission, Sewing machines noise when low-speed running is very large, and the service life of Timing Belt is relatively short, maintenance inconvenient.3, its eccentric cam adopts bearing, therefore does not lubricate, and service life is relatively short.4, up and down conveying axis is at rear, horizontal feed axle front, and this structure is unfavorable for feeding.
Utility model content
The shortcoming of prior art in view of the above, the purpose of this utility model is to provide a kind of low noise and can avoids the sewing machine feed lifting feed mechanism that feeding time point offsets.
For achieving the above object, the utility model provides a kind of sewing machine feed lifting feed mechanism, comprise the first motor, second motor, retainer and the feeding tooth be fixed on retainer upper end, described first motor is connected with retainer by Tai Ya mechanism, second motor is connected with retainer by cloth feeding mechanism, described Tai Ya mechanism comprises the upper axle and feed lifting rock shaft that are parallel to each other, described upper axle is connected with feed lifting rock shaft by the first gear unit, and drive feed lifting rock shaft line centered by own axes to swing back and forth, described feed lifting rock shaft is connected with retainer by the second gear unit, and drive retainer to move back and forth up and down.
In technique scheme, described first gear unit has two kinds of preferred embodiments, is respectively:
Described first gear unit comprises the first eccentric cam or the capacity eccentric bearing be fixed on axle, is fixed on lifting tooth rear crank and lifting tooth connecting rod on feed lifting rock shaft, described lift tooth connecting rod upper end and described first eccentric cam or capacity eccentric bearing rotatable engagement, lower end and the described tooth rear crank of lifting of lifting tooth connecting rod are hinged.
Or, described first gear unit comprises first connecting rod, second connecting rod and the first slide block, one end of described first connecting rod is fixed on axle, one end of described second connecting rod is fixed on feed lifting rock shaft, and described first slide block is articulated with the other end of first connecting rod and is enclosed within slidably on second connecting rod.
In technique scheme, described second gear unit also has two kinds of preferred embodiments, is respectively:
Described second gear unit comprises feed lifting rock fork-shaped crank and is articulated with the second slide block of retainer end, one end of described feed lifting rock fork-shaped crank is fixed on feed lifting rock shaft, the other end of feed lifting rock fork-shaped crank offers the chute that the radial direction along feed lifting rock shaft extends, and described second slide block to be located in chute and can be moved around along the bearing of trend of chute.
Or described second gear unit comprises and is fixed on the second eccentric cam on feed lifting rock shaft and third connecting rod, and one end and second eccentric cam of described third connecting rod are hinged, and the other end and the retainer of third connecting rod are hinged.
Further, described cloth feeding mechanism comprises the feed spool, drive rod, intermediate bar, take-off lever and the retainer seat that parallel with feed lifting rock shaft, one end of described drive rod is fixed on the output shaft of the second motor, the two ends of described intermediate bar respectively at the other end of drive rod and one end of take-off lever hinged, the described take-off lever other end and retainer seat are all fixed on feed spool, described retainer seat and retainer hinged.
Preferably, described retainer seat and retainer are hinged by a cam pin, described cam pin comprises the first axle part, the second axle part and the 3rd axle portion successively, described the first axle part and the 3rd axle portion are arranged with one heart, the first axle part and the second axle part eccentric setting, described the first axle part and the 3rd axle portion are all rotatably connected in retainer seat, and described the second axle part is rotatably connected in retainer.
Further, described take-off lever is fixedly connected with retainer seat.
Preferably, also comprise a steady pin between take-off lever and retainer seat, the two ends of this steady pin and take-off lever and retainer seat are and are tightly fixed.
Preferably, also comprise one and be located in trip bolt between take-off lever and retainer seat, the end thread of this trip bolt is connected with a clamp nut, and described take-off lever and retainer seat are positioned between the head of trip bolt and clamp nut.
Further, described cloth feeding mechanism can also by the following technical solutions: cloth feeding mechanism comprises drive rod, intermediate bar and is rotatably supported in the retainer seat in baseplate of sewing machine, one end of described drive rod is fixed on the output shaft of the second motor, and the two ends of described intermediate bar are hinged respectively at the other end of drive rod and retainer seat.
Preferably, towards a direction and the unidirectional swing of opposite direction once, before and after described retainer, reciprocating swing once for the output shaft of described second motor.
The utility model also provides a kind of Sewing machines comprising sewing machine feed lifting feed mechanism as above.
As mentioned above, the sewing machine feed lifting feed mechanism that the utility model relates to and Sewing machines, have following beneficial effect:
After first motor drives upper axle to rotate, upper axle is swung up and down by transmission mechanism Direct driver feed lifting rock shaft, feed lifting rock shaft accurately drives retainer synchronously to move up and down by feed lifting rock fork-shaped crank and cooperatively interacting of the second slide block again, thus ensure the rotation of the first motor and retainer move up and down between synchronism, effectively avoid the skew of feeding time point; In addition, after changing toothed belt transmission into link transmission, even if Sewing machines low cruise, its noise all can not be very large, and the fault rate of link transmission is lower compared to toothed belt transmission, maintenance is also more convenient.
Accompanying drawing explanation
Fig. 1 is the structural representation of sewing machine feed lifting feed mechanism in the application.
Fig. 2 is that the A of Fig. 1 encloses enlarged drawing.
Fig. 3 is the connection diagram of retainer and feed spool in Fig. 1, feed lifting rock shaft.
Fig. 4 is another embodiment of the first gear unit in the application.
Fig. 5 is another embodiment of the second gear unit in the application.
Fig. 6 is another embodiment of cloth feeding mechanism in the application.
Fig. 7 is that the B of Fig. 6 encloses enlarged drawing.
Element numbers explanation
Axle on 1
2 first eccentric cams
3 first motors
4 lift tooth connecting rod
5 lift tooth rear crank
6 feed lifting rock shafts
7 feed lifting rock fork-shaped cranks
71 chutes
8 retainers
9 feeding teeth
10 retainer seats
101 retainer seat bodies
102 transmission arms
11 cam pins
111 the first axle parts
112 the second axle parts
113 the 3rd axle portions
114 rotation slots
12 needle plates
121 tooth holes
13 take-off levers
14 intermediate bars
15 drive rods
16 second motors
17 feed spools
18 second slide blocks
181 slider body
182 slide block flanges
19 pins
20 first connecting rods
21 second connecting rods
22 first slide blocks
23 second eccentric cams
24 third connecting rods
25 bearing pins
100 first gear units
200 second gear units
Detailed description of the invention
By particular specific embodiment, embodiment of the present utility model is described below, person skilled in the art scholar the content disclosed by this description can understand other advantages of the present utility model and effect easily.
Notice, structure, ratio, size etc. that this description institute accompanying drawings illustrates, content all only in order to coordinate description to disclose, understand for person skilled in the art scholar and read, and be not used to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, still all should drop on technology contents that the utility model discloses and obtain in the scope that can contain.Simultaneously, quote in this description as " on ", D score, "left", "right", " centre " and " one " etc. term, also only for ease of understanding of describing, and be not used to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under changing technology contents without essence, when being also considered as the enforceable category of the utility model.
In following examples, all directions are defined as follows: described front is to referring to the direction of Sewing machines in the face of people, described rear is to referring to the direction of Sewing machines back to people, described left direction is towards the direction of head of sewing machine, described right direction refers to the direction towards Sewing machines tail, described upper direction refers to towards the direction of Sewing machines upper end, and described lower direction refers to towards the direction of Sewing machines lower end.
As depicted in figs. 1 and 2, the application provides a kind of sewing machine feed lifting feed mechanism, comprise the first motor 3, second motor 16, needle plate 12, retainer 8 and the feeding tooth 9 be fixed on retainer 8 upper end, described first motor 3 is connected with the front end of retainer 8 by Tai Ya mechanism, move back and forth up and down together with feeding tooth 9 to drive retainer 8, second motor 16 is connected by the rear end of cloth feeding mechanism with retainer 8, move back and forth to drive retainer 8 front and back together with feeding tooth 9, described needle plate 12 offers the tooth hole 121 corresponding with feeding tooth about 9, described tooth hole 121 length is in the longitudinal direction greater than feeding tooth 9 length in the longitudinal direction, move back and forth to allow and move back and forth up and down before and after feeding tooth 9 is in tooth hole 121, thus realize feeding tooth 9 and drive sewing to move backward.
Further, see Fig. 1 and Fig. 2, described Tai Ya mechanism comprises the upper axle 1 and feed lifting rock shaft 6 that are parallel to each other, upper axle 1 and feed lifting rock shaft 6 Axis Extension all in left-right direction, described upper axle 1 is rotatably supported in sewing machine case, upper axle 1 to be connected with feed lifting rock shaft 6 by the first gear unit 100 and to drive feed lifting rock shaft 6 line centered by own axes to swing back and forth, and described feed lifting rock shaft 6 to be connected with retainer 8 by the second gear unit 200 and to drive retainer 8 to move back and forth up and down.Described first gear unit 100 has following two kinds of preferred embodiments:
Embodiment one, as shown in Figure 1, described first gear unit 100 comprise be fixed on the first eccentric cam 2 on axle 1 or capacity eccentric bearing, one end is fixed on lifting tooth rear crank 5 and lifting tooth connecting rod 4 on feed lifting rock shaft 6, described lift tooth connecting rod 4 upper end and described first eccentric cam 2 or capacity eccentric bearing rotatable engagement, lower end and the described other end lifting tooth rear crank 5 of lifting tooth connecting rod 4 are hinged.In the application, upper axle 1 sets firmly described first eccentric cam 2; First eccentric cam 2 comprise the first connecting portion of being connected with upper axle 2 and with the second connecting portion lifted tooth connecting rod 4 and be connected, described first connecting portion and the second connecting portion eccentric setting, thus the center of lifting tooth connecting rod 4 upper end is not overlapped with the center of upper axle 1, therefore when the first motor 3 drives upper axle 1 to rotate, upper axle 1 drives the first eccentric cam 2 synchronous axial system, rotate centered by the above axle 1 in the upper end of lifting tooth connecting rod 4 be connected with the first eccentric cam 2, therefore lift tooth connecting rod 4 and do approximate moving back and forth up and down; Lifting tooth connecting rod 4 drives the end of lifting tooth rear crank 5 synchronously to move back and forth up and down, thus makes feed lifting rock shaft 6 line swinging back and forth in certain angular range centered by own axes.
Embodiment two, as shown in Figure 4, described first gear unit 100 comprises first connecting rod 20, second connecting rod 21 and the first slide block 22, one end of described first connecting rod 20 is fixed on axle 1, one end of described second connecting rod 21 is fixed on feed lifting rock shaft 6, described first slide block 22 is articulated with the other end of first connecting rod 20 and is enclosed within second connecting rod 21 slidably, and described second connecting rod 21 extends along the radial direction of feed lifting rock shaft 6.Upper axle 1 drives the upper end of first connecting rod 20 to rotate, therefore line swings back and forth centered by the axis of the above axle 1 in the lower end of first connecting rod 20, and drive second connecting rod 21 line centered by the axis of feed lifting rock shaft 6 to swing back and forth by the first slippage of slide block 22 on second connecting rod 21, thus drive feed lifting rock shaft 6 line swinging back and forth in certain angular range centered by own axes, namely go up axle 1 and swung by slider-crank mechanism driving feed lifting rock shaft 6.
Described second gear unit 200 also has following two kinds of preferred embodiments:
Embodiment one, as shown in Figure 2, described second gear unit 200 comprises feed lifting rock fork-shaped crank 7 and is articulated with the second slide block 18 of retainer 8 end, one end of described feed lifting rock fork-shaped crank 7 is fixed on feed lifting rock shaft 6, the other end of feed lifting rock fork-shaped crank 7 offers the chute 71 that the radial direction along feed lifting rock shaft 6 extends, and described second slide block 18 to be located in chute 71 and can be moved around along the bearing of trend of chute 71.Feed lifting rock shaft 6 drives one end synchronous hunting of feed lifting rock fork-shaped crank 7, synchronously, drives retainer 8 synchronously to move back and forth up and down together with feeding tooth 9 by the second slide block 18 with cooperatively interacting of chute 71.
Embodiment two, as shown in Figure 5, described second gear unit 200 comprises and is fixed on the second eccentric cam 23 on feed lifting rock shaft 6 and third connecting rod 24, one end and second eccentric cam 23 of described third connecting rod 24 are hinged, and the other end and the retainer 8 of third connecting rod 24 are hinged.Second eccentric cam 23 comprises the 3rd connecting portion be connected with feed lifting rock shaft 6 and the 4th connecting portion be connected with third connecting rod 24, described 3rd connecting portion and the 4th connecting portion eccentric setting, thus the center of third connecting rod 24 lower end is not overlapped with the center of feed lifting rock shaft 6; Therefore when feed lifting rock shaft 6 drives the second eccentric cam 23 to swing back and forth, feed lifting rock shaft 6 is the pivot of the second eccentric cam 23, the lower end of third connecting rod 24 is swung back and forth centered by feed lifting rock shaft 6, therefore third connecting rod 24 does approximate moving back and forth up and down, thus retainer 8 is driven synchronously to move back and forth up and down together with feeding tooth 9.
In above-mentioned Tai Ya mechanism, the rotation of the first motor 3 can be directly delivered on retainer 8, to ensure the synchronism between the moving back and forth up and down of the rotation of the first motor 3 and retainer 8.In addition, the application drives retainer 8 and feeding tooth 9 action by swinging up and down of feed lifting rock shaft 6 jointly with the swing of feed spool 17, therefore when turning needle gage and big needle distance down the work feed time started and the work feed end time substantially constant, as when Sewing machines is turned down to 3 needle gage by 5 needle gages, the work feed time started shifts to an earlier date 5 °/360 °, and the work feed end time delays 2 °/360 °; When Sewing machines is turned down to 1 needle gage by 5 needle gages, the work feed time started shifts to an earlier date 5 °/360 °, the work feed end time delays 4 °/360 °, therefore total work feed time recruitment is less in terms of existing technologies, thus effectively avoid the skew of feeding time point, prevent the phenomenons such as the bad or broken needle fault of take-up, finally improve sewing quality.In addition, this Tai Ya mechanism is link transmission, so even if Sewing machines low cruise, its noise all can not be very large, and the fault rate of link transmission is lower compared to toothed belt transmission, maintenance is also more convenient.
Preferably, as shown in Figure 3, described second slide block 18 comprises slider body 181 and is located at the slide block flange 182 of slider body 181 right-hand member, described slider body 181 as in chute 71, slider body 181 is plane contact with chute 71, therefore the second slide block 181 can not rotate, can only move in chute 71 in chute 71, thus, when feed lifting rock fork-shaped crank 7 swings up and down, retainer 8 is driven synchronously to swing up and down by the second slide block 18; Described second slide block 181 is hinged with retainer 8 by a pin 19, and the head of described pin 19 and slide block flange 182 are positioned at the left and right sides of feed lifting rock fork-shaped crank 7 rear end, can limit the second slide block 18, relative to feed lifting rock fork-shaped crank 7, left and right play occur.
Further, described cloth feeding mechanism has two kinds of preferred embodiments, embodiment one, as depicted in figs. 1 and 2, described cloth feeding mechanism comprises the feed spool 17, drive rod 15, intermediate bar 14, take-off lever 13 and the retainer seat 10 that parallel with feed lifting rock shaft 6, one end of described drive rod 15 is fixed on the output shaft of the second motor 16, the two ends of described intermediate bar 14 respectively at the other end of drive rod 15 and one end of take-off lever 13 hinged, described take-off lever 13 other end and retainer seat 10 are all fixed on feed spool 17, and the rear end of described retainer seat 10 and retainer 8 is hinged.The output shaft of described second motor 16 carrys out back rotation in certain angular range, thus drives drive rod 15 swing in certain angular range; Drive rod 15 drives feed spool 17 and the synchronous front and back of retainer seat 10 to move back and forth by intermediate bar 14 and take-off lever 13, thus drives retainer 8 front and back together with feeding tooth 9 to move back and forth.Moved forward and backward the size of amplitude by the input quantity adjustable retainer 8 and feeding tooth 9 adjusting the second motor 16, and then realize the change of feeding tooth 9 multi-motion track, to realize the variation of sewing track.Preferably, described second motor 16 is a stepper motor, can be changed the input quantity of stepper motor by encoder easily, so that the movement locus of adjustment feeding tooth 9.In addition, described feed lifting rock shaft 6 is positioned at the front side of feeding tooth 9, and described feed spool 17 is positioned at the rear side of feeding tooth 9, and namely feed lifting rock shaft 6 is at front, feed spool 17 rear, is first upwards lifted by sewing like this dragged backward by sewing, advantageously in feeding again when feeding.
Embodiment two, as shown in Figure 6 and Figure 7, the retainer seat 10 that described cloth feeding mechanism comprises drive rod 15, intermediate bar 14 and is rotatably supported in baseplate of sewing machine, the transmission arm 102 that described retainer seat 10 comprises the axially extended retainer seat body 101 in left and right and extends along retainer seat body 101 radial direction, the base plate of described Sewing machines is fixed with about one axially extended bearing pin 25, this bearing pin 25 is located in retainer seat body 101, therefore bearing pin 25 is the fixing swing pivot of retainer seat body 101; One end of described drive rod 15 is fixed on the output shaft of the second motor 16, and the two ends of described intermediate bar 14 are hinged respectively at the other end of drive rod 15 and the transmission arm 102 of retainer seat 10.The output shaft of described second motor 16 carrys out back rotation in certain angular range, thus drives drive rod 15 swing in certain angular range; Drive rod 15 is driven before and after retainer seat 10 by intermediate bar 14 and moves back and forth, thus drives retainer 8 front and back together with feeding tooth 9 to move back and forth.This embodiment eliminates feed spool, and retainer seat 10 Direct driver retainer 8, it can ensure the accuracy of Movement transmit, also simplify cloth feeding mechanism, reduces it and takes up room.
In two embodiments of above-mentioned cloth feeding mechanism, the output shaft of described second motor 16 towards a direction and the unidirectional swing of opposite direction once, before and after described retainer 8, reciprocating swing once, therefore the gearratio between the output shaft of the second motor 16 and retainer seat 10 is 2:1, the frequency that the rotation direction reducing the second motor 16 output shaft successively switches, improves sewing quality.
Further, see Fig. 1 and Fig. 3, described retainer seat 10 and retainer 8 are hinged by a cam pin 11, described cam pin 11 comprises the first axle part 111, the second axle part 112 and the 3rd axle portion 113 successively, described the first axle part 111 and the 3rd axle portion 113 are arranged with one heart, the first axle part 111 and the second axle part 112 eccentric setting, described the first axle part 111 and the 3rd axle portion 113 are all rotatably connected in retainer seat 10, and described the second axle part 112 is rotatably connected in retainer 8.Employing cam pin 11 realizes retainer seat 10 and the hinged of retainer 8 has following two advantages: 1, rotate cam pin 11 and can realize the adjustment that retainer 8 moves forward and backward amplitude, be convenient to the adjustment of feeding tooth 9 movement locus further; 2, all there is certain foozle in the part such as drive rod 15, intermediate bar 14, take-off lever 13, feed spool 17, retainer seat 10 and retainer 8, therefore cloth feeding mechanism has assembled rear entirety also can there is certain foozle, this foozle can cause the rotation of the second motor 16 that retainer 8 can not be driven exactly to move forward and backward; After cam pin 11 is set, can offset because of the transmission deviation caused by the foozle of each part by rotating cam pin 11, ensure that the rotation of the second motor 16 can be passed to before and after retainer 8, exactly drive retainer 8 exactly to move back and forth, to guarantee the accuracy of feeding tooth 9 movement locus, improve sewing quality.In addition, for the ease of rotating cam pin 11, the left end of described cam pin 11 offers in-line or criss-cross rotation slot 114, is convenient to screwdriver and rotates cam pin 11.
Preferably, in the embodiment one of above-mentioned cloth feeding mechanism, take-off lever 13 and retainer seat 10 are separately fixed at the two ends of feed spool 17, and described take-off lever 13 is fixedly connected with retainer seat 10, guarantee the accuracy transmitted between the second motor 16 and retainer 8 further, without time lag.Described take-off lever 13 has two kinds of preferred embodiments with the fixed structure of retainer seat 10, embodiment one, arrange between take-off lever 13 and retainer seat 10 left and right extend steady pin, right-hand member and the take-off lever 13 of steady pin are tightly fixed, the left end retainer seat 10 of steady pin is tightly fixed, to be fixedly connected with retainer seat 10 by take-off lever 13.Embodiment two, wear in take-off lever 13 and retainer seat 10 left and right extend trip bolt, the end thread of this trip bolt is connected with a clamp nut, described take-off lever 13 and retainer seat 10 between the head and clamp nut of trip bolt, so that take-off lever 13 is fixedly connected with retainer seat 10.
Further, in order to Appropriate application Sewing machines inner space and reduce taking up room of Sewing machines, described first motor 3 directly adopts the mair motor of Sewing machines, described upper axle 1 is the main shaft of Sewing machines, described second motor 16 is positioned at the below of the first motor 3, and the first motor 3 is fixed on the casing right-hand member of Sewing machines, the second motor 16 is fixed on the base plate of Sewing machines.
The utility model also relates to a kind of Sewing machines, comprises sewing machine feed lifting feed mechanism as above.
In sum, the sewing machine feed lifting feed mechanism that relates to of the utility model and Sewing machines have following beneficial effect:
1, the rotation of the first motor 3 directly accurately and synchronously drive retainer 8 and feeding tooth 9 to move back and forth up and down, thus can avoid the skew of feeding time point, to improve sewing quality;
2, the first motor 3 drives retainer 8 and feeding tooth 9 to move back and forth up and down by linkage, compared to toothed belt transmission of the prior art, and noise low, failure rate is low during operation, and be also convenient to maintenance;
3, feed lifting rock shaft 6 is at front, feed spool 17 rear, is more conducive to work feed;
4, retainer seat 10 and retainer 8 hinged by cam pin 11, it is convenient to the movement locus adjusting feeding tooth 9, can also offset the transmission deviation that the foozle because of part causes, ensure transmission accuracy.
So the utility model effectively overcomes various shortcoming of the prior art and tool high industrial utilization.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all without prejudice under spirit of the present utility model and category, can modify above-described embodiment or changes.Therefore, such as have in art and usually know that the knowledgeable modifies or changes not departing from all equivalences completed under the spirit and technological thought that the utility model discloses, must be contained by claim of the present utility model.
Claims (13)
1. a sewing machine feed lifting feed mechanism, comprise the first motor (3), second motor (16), retainer (8) and the feeding tooth (9) be fixed on retainer (8) upper end, described first motor (3) is connected with retainer (8) by Tai Ya mechanism, second motor (16) is connected with retainer (8) by cloth feeding mechanism, it is characterized in that: described Tai Ya mechanism comprises the upper axle (1) and feed lifting rock shaft (6) that are parallel to each other, described upper axle (1) is connected with feed lifting rock shaft (6) by the first gear unit (100), and drive feed lifting rock shaft (6) line centered by own axes to swing back and forth, described feed lifting rock shaft (6) is connected with retainer (8) by the second gear unit (200), and drive retainer (8) to move back and forth up and down.
2. sewing machine feed lifting feed mechanism according to claim 1, it is characterized in that: described first gear unit (100) comprises the first eccentric cam (2) or the capacity eccentric bearing be fixed on axle (1), is fixed on lifting tooth rear crank (5) and lifting tooth connecting rod (4) on feed lifting rock shaft (6), described lift tooth connecting rod (4) upper end and described first eccentric cam (2) or capacity eccentric bearing rotatable engagement, lower end and the described tooth rear crank (5) of lifting of lifting tooth connecting rod (4) are hinged.
3. sewing machine feed lifting feed mechanism according to claim 1, it is characterized in that: described first gear unit (100) comprises first connecting rod (20), second connecting rod (21) and the first slide block (22), one end of described first connecting rod (20) is fixed on axle (1), one end of described second connecting rod (21) is fixed on feed lifting rock shaft (6), and described first slide block (22) is articulated with the other end of first connecting rod (20) and is enclosed within slidably on second connecting rod (21).
4. sewing machine feed lifting feed mechanism according to claim 1, it is characterized in that: described second gear unit (200) comprises feed lifting rock fork-shaped crank (7) and is articulated with second slide block (18) of retainer (8) end, one end of described feed lifting rock fork-shaped crank (7) is fixed on feed lifting rock shaft (6), the other end of feed lifting rock fork-shaped crank (7) offers the chute (71) that the radial direction along feed lifting rock shaft (6) extends, and described second slide block (18) to be located in chute (71) and can be moved around along the bearing of trend of chute (71).
5. sewing machine feed lifting feed mechanism according to claim 1, it is characterized in that: described second gear unit (200) comprises and is fixed on the second eccentric cam (23) on feed lifting rock shaft (6) and third connecting rod (24), one end and second eccentric cam (23) of described third connecting rod (24) are hinged, and the other end and the retainer (8) of third connecting rod (24) are hinged.
6. sewing machine feed lifting feed mechanism according to claim 1, it is characterized in that: described cloth feeding mechanism comprises the feed spool (17) paralleled with feed lifting rock shaft (6), drive rod (15), intermediate bar (14), take-off lever (13) and retainer seat (10), one end of described drive rod (15) is fixed on the output shaft of the second motor (16), the two ends of described intermediate bar (14) respectively at the other end of drive rod (15) and one end of take-off lever (13) hinged, described take-off lever (13) other end and retainer seat (10) are all fixed on feed spool (17), described retainer seat (10) and retainer (8) hinged.
7. sewing machine feed lifting feed mechanism according to claim 6, it is characterized in that: described retainer seat (10) and retainer (8) are hinged by a cam pin (11), described cam pin (11) comprises the first axle part (111) successively, the second axle part (112) and the 3rd axle portion (113), described the first axle part (111) and the 3rd axle portion (113) are arranged with one heart, the first axle part (111) and the second axle part (112) eccentric setting, described the first axle part (111) and the 3rd axle portion (113) are all rotatably connected in retainer seat (10), described the second axle part (112) is rotatably connected in retainer (8).
8. sewing machine feed lifting feed mechanism according to claim 6, is characterized in that: described take-off lever (13) is fixedly connected with retainer seat (10).
9. sewing machine feed lifting feed mechanism according to claim 8, it is characterized in that: also comprise one and be positioned at steady pin between take-off lever (13) and retainer seat (10), the two ends of this steady pin and take-off lever (13) and retainer seat (10) are and are tightly fixed.
10. sewing machine feed lifting feed mechanism according to claim 8, it is characterized in that: also comprise one and be located in trip bolt between take-off lever (13) and retainer seat (10), the end thread of this trip bolt is connected with a clamp nut, and described take-off lever (13) and retainer seat (10) are between the head and clamp nut of trip bolt.
11. sewing machine feed lifting feed mechanisms according to claim 1, it is characterized in that: the retainer seat (10) that described cloth feeding mechanism comprises drive rod (15), intermediate bar (14) and is rotatably supported in baseplate of sewing machine, one end of described drive rod (15) is fixed on the output shaft of the second motor (16), and the two ends of described intermediate bar (14) are hinged respectively at the other end of drive rod (15) and retainer seat (10).
12. sewing machine feed lifting feed mechanisms according to claim 6 or 11, it is characterized in that: towards a direction and the unidirectional swing of opposite direction once, before and after described retainer (8), reciprocating swing once for the output shaft of described second motor (16).
13. 1 kinds of Sewing machiness, is characterized in that: comprise the sewing machine feed lifting feed mechanism described in any one of claim 1-12.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520772379.8U CN205011968U (en) | 2015-09-30 | 2015-09-30 | Sewing machine lifts tooth feeding mechanism and sewing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520772379.8U CN205011968U (en) | 2015-09-30 | 2015-09-30 | Sewing machine lifts tooth feeding mechanism and sewing machine |
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| Publication Number | Publication Date |
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| CN205011968U true CN205011968U (en) | 2016-02-03 |
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| CN201520772379.8U Withdrawn - After Issue CN205011968U (en) | 2015-09-30 | 2015-09-30 | Sewing machine lifts tooth feeding mechanism and sewing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088547A (en) * | 2015-09-30 | 2015-11-25 | 杰克缝纫机股份有限公司 | Dog lifting feeding mechanism of sewing machine and sewing machine |
-
2015
- 2015-09-30 CN CN201520772379.8U patent/CN205011968U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105088547A (en) * | 2015-09-30 | 2015-11-25 | 杰克缝纫机股份有限公司 | Dog lifting feeding mechanism of sewing machine and sewing machine |
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