CN104131422A - Sewing machine with adjustable needle bar stroke - Google Patents
Sewing machine with adjustable needle bar stroke Download PDFInfo
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- CN104131422A CN104131422A CN201410384680.1A CN201410384680A CN104131422A CN 104131422 A CN104131422 A CN 104131422A CN 201410384680 A CN201410384680 A CN 201410384680A CN 104131422 A CN104131422 A CN 104131422A
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Abstract
The invention discloses a sewing machine with an adjustable needle bar stroke, and belongs to the technical field of sewing machines. The sewing machine comprises a needle bar, a connection bar, a crank, a main shaft and a motor and further comprises an eccentric link pin. The upper end of the connection bar is connected with the crank through the eccentric link pin, the upper end of the connection bar is provided with an axial through hole, a first shaft is matched in the axial through hole in the connection bar in a rotating mode, the outer end of the first shaft is connected with an adjusting screw in a threaded mode in the axial direction and is cushioned with a limiting gasket for preventing the upper end of the connection bar from axial movement, and a left cover of a machine head at the position where the adjusting screw stretches outwards in the axial direction is provided with a screw hole for a screw driver to be inserted so as to screw the adjusting strew conveniently. The sewing machine with the adjustable needle bar stroke has the advantages of being adjustable in the needle bar stroke, simplifying the adjusting mode, saving oil and the like.
Description
Technical field
The invention belongs to sewing machine technique field, more particularly, it relates to the adjustable Sewing machines of a kind of needle bar stroke.
Background technology
Sewing machines is to use one or more sewing thread, forms one or more stitchings on sewing, the machine that makes one or more layers sewing interweave or unite by a seam.Sewing function is made the goods such as the fabrics such as cotton, fiber crops, silk, hair, artificial fibre and leather, plastics, paper, the stitching neat appearance of stitching out, smooth firm, and sewing velocity is fast, easy to use.General Sewing machines is all made up of head, support, transmission and annex four parts.Head is the major part of Sewing machines, and it forms by stinging material, hook line, take-up, four mechanisms of feeding and coiling, binder, Luo Yadeng auxiliary body, and the motion of each mechanism reasonably coordinates, and periodic duty unites by a seam sewing.
Needle bar stroke mechanism on existing Sewing machines comprises the shank, connecting rod, crank and the main shaft that are arranged on head of sewing machine, main shaft is arranged on it sewing machine, one end of main shaft is connected with crank by bearing, the other end is connected with motor by Timing Belt, connecting rod one end is connected with crank, and the other end is connected with shank; By the rotation of driven by motor main shaft, the rotation of main shaft drives crank to rotate, crank drivening rod moves up and down, and because connecting rod is connected with shank, thereby realizes shank and do the reciprocating motion of vertical direction.
Needle bar stroke refers to that shank in the vertical direction is raised to peak and drops to the displacement between minimum point, and can be found out by above-mentioned mechanism, shank in the vertical direction is raised to peak and drops to these 2 of minimum points and cannot change, that is to say that needle bar stroke fixes, cannot regulate.Sewing machines is in actual use procedure, the thickness of sewing cloth is not identical, and the needle bar stroke of Sewing machines is closely bound up with the thickness of sewing cloth, therefore existing Sewing machines limited to a certain extent that machine is thin and expected in scope of application when thick material conversion.
Summary of the invention
The deficiency existing for prior art, the object of the present invention is to provide the adjustable Sewing machines of a kind of needle bar stroke, can realize the adjustable of needle bar stroke, convenient while adjusting simultaneously.
For achieving the above object, the invention provides following technical scheme: the Sewing machines that a kind of needle bar stroke is adjustable, comprise the shank, connecting rod, crank, main shaft and the motor that are arranged on head of sewing machine, main shaft is arranged on it sewing machine, one end of main shaft is connected with crank by bearing, the other end is connected with motor by Timing Belt, and small end is connected with crank, and lower end is connected with shank; By the rotation of driven by motor main shaft, the rotation of main shaft drives crank to rotate, and crank drivening rod rotates, and shank is followed connecting rod realization and pumped; Also comprise eccentric ratio pin, described small end is connected with crank through eccentric ratio pin, described removable being arranged on crank of eccentric ratio pin.
Described eccentric ratio pin is by the first axle, partially dish, the second axle are axially connected to form, and the axis of the first axle and not conllinear of the second axle axis coil any point on circumference is all greater than the first axle and the second axle diameter to the horizontal range of inclined to one side disk center partially; Small end end is provided with an axially extending bore, the first axle is rotatably assorted in the axially extending bore of connecting rod, the outer end of the first axle is axially bolted with adjustment screw, and be lined with the spacing shim that prevents small end axial float, axially the stretch out head left cover at place of adjustment screw is provided with and is convenient to screwdriver and inserts and twist the screw of adjustment screw; The second axle is connected with crank is removable, dish circumference is by end to end orthodrome, left straight line, small arc-shaped, right rectilinear(-al) partially, small arc-shaped radius is less than large circular arc radius, after eccentric ratio pin is arranged on crank, crank has a limiting platform face below partially coiling, and the left straight line of dish or the limiting platform face of right straight line and crank offset partially.
The first axle is rotatably assorted and in the axially extending bore of connecting rod, refers to that the first axle sleeve has needle bearing, needle bearing is engaged in the axially extending bore of small end, small end portion is provided with the oil-feed groove of being convenient to needle bearing fuel feeding, connecting rod is hollow setting, the lower end of connecting rod is provided with an oil outlet, and oil outlet communicates with oil-feed groove; One side of connecting rod lower end is hinged with shank and pricks head, shank is pricked an inside, lower end that is plugged on connecting rod, shank is pricked head and is communicated with oil outlet, shank is pricked head-clamp on shank, the hinged slide block of opposite side of connecting rod lower end, slide block side is provided with a slide, and slide is fixed in casing, slide is provided with a vertical chute, and slide block sliding fit is in the chute of slide.
Outside described shank top and bottom, all cover has copper sheathing, copper sheathing to be arranged on respectively head top and the bottom of casing.
The second described axle refers on crank have a circular fixture block with removable being connected of crank, and the opening part of circular fixture block is provided with bolt, and the second axle is positioned at the circular port of circular fixture block, is realized the clamping of circular fixture block or is unclamped by bolt.
Small arc-shaped radian on described inclined to one side dish is 90 °.
The first described axle is identical with the second shaft diameter.
Between the axis of the first described axle and the second axle axis, differ 1-2mm.
The invention has the beneficial effects as follows:
1, between small end and crank, increased eccentric ratio pin, one end of eccentric ratio pin is connected with connecting rod, and the other end is connected with crank, by rotating eccentric ratio pin, changes the radius that connecting rod rotates, and realizes successively the stroke adjustment of shank.
2, the circumference of the inclined to one side dish on eccentric ratio pin is divided into orthodrome, left straight line, small arc-shaped, right straight line, small arc-shaped radius is less than large circular arc radius, the orthodrome two ends of dish coordinate the plane platform on crank partially, have realized the spacing of two extreme positions, carry out successively the change of precision range.
3, at the first axle of eccentric ratio pin, adjustment screw is set outward, and on axially stretching out the head left cover of locating, adjustment screw is provided with screw, convenient screwdriver inserts screw and twists adjustment screw, drive eccentric ratio pin to rotate, realize the change of needle bar stroke, the operation that existing needle bar stroke changes has been simplified in this design greatly, and common operating personnel can regulate.
4, the first beam warp needle bearing of small end and eccentric ratio pin coordinates rotation, reduce fretting wear between the two, ensure degree of regulation, establish oil-feed groove in the upper end of connecting rod simultaneously, lower end at connecting rod sets out oilhole, realize the connection of oil circuit, it is lubricated for shank bundle head and the slide block of lower end that the unnecessary lubricating oil in upper end flows to lower end, saves the consumption of lubricating oil.
Brief description of the drawings
Fig. 1 is schematic perspective view of the present invention.
Fig. 2 is A place enlarged drawing in Fig. 1.
Fig. 3 is side schematic view of the present invention.
Fig. 4 is that the present invention removes the side schematic view after left cover.
Fig. 5 is this crank and eccentric ratio pin connection diagram.
Fig. 6 is eccentric ratio pin schematic diagram.
Crank and eccentric ratio pin connection diagram when Fig. 7 is needle bar stroke maximum.
Fig. 8 is A-A cutaway view in Fig. 7.
Crank and eccentric ratio pin connection diagram when Fig. 9 is needle bar stroke minimum.
Figure 10 is B-B cutaway view in Fig. 9.
Figure 11 coils schematic diagram partially.
Reference numeral: 1, head, 1.1, screw, 2, shank, 3, connecting rod, 3.1, axially extending bore, 3.2, oil-feed groove, 3.3, oil outlet, 4, crank, 4.1, limiting platform face, 4.2, bolt, 5, eccentric ratio pin, 5.1, the first axle, 5.2, dish partially, 5.2.1, orthodrome, 5.2.2, left straight line, 5.2.3, small arc-shaped, 5.2.4, right straight line, 5.3, the second axle, 6, adjustment screw, 7, spacing shim, 8, shank pricks head, 9, slide block, 10, slide, 10.1, chute, 11, copper sheathing.
Detailed description of the invention
Referring to figs. 1 through Figure 11, the adjustable Sewing machines embodiment of needle bar stroke of the present invention is described further.
Needle bar stroke in Sewing machines refers to that shank in the vertical direction is raised to peak and drops to the displacement between minimum point, and shank in the vertical direction on existing Sewing machines is raised to peak and drops to these 2 of minimum points and cannot change, that is to say that needle bar stroke fixes, cannot regulate.Sewing machines is in actual use procedure, and the thickness of sewing cloth changes again, thus only have a kind of Sewing machines of needle bar stroke to adapt to, so the present invention design a can be as required the Sewing machines of the metering needle throw of lever voluntarily.The Sewing machines that a kind of needle bar stroke is adjustable, comprise the shank 2, connecting rod 3, crank 4, main shaft and the motor that are arranged on head of sewing machine 1, main shaft is arranged on it sewing machine, one end of main shaft is connected with crank 4 by bearing, the other end is connected with motor by Timing Belt, connecting rod 3 upper ends are connected with crank 4, and lower end is connected with shank 2; By the rotation of driven by motor main shaft, the rotation of main shaft drives crank 4 to rotate, and crank 4 drivening rods 3 rotate, and shank 2 is followed connecting rod 3 realizations and pumped.
In order to realize the adjusting of shank 2 strokes, the present invention also comprises eccentric ratio pin 5, described eccentric ratio pin 5 is removable to be arranged on crank 4, refer to such an extent that be that eccentric ratio pin 5 has multiple installation site on crank 4, so also just mean when eccentric ratio pin 5 rotates have the different radiuses of gyration.Described eccentric ratio pin 5 by the first axle 5.1, partially coil 5.2, the second axle 5.3 is axially connected to form, the first axle 5.1 is positioned at a side of inclined to one side dish 5.2, the second axle 5.3 is positioned at the opposite side of inclined to one side dish 5.2, and three is integrated.
So-called bias, refer to axis and the not conllinear of the second axle 5.3 axis of the first axle 5.1, that is to say axis and the second axle 5.3 eccentric axis designs of the first axle 5.1, between the two axially have certain deviation, design is exactly the radius of gyration (because the upper end of connecting rod 3 is connected with the first axle 5.1) in order to change connecting rod 3 upper ends like this, also with regard to mean that connecting rod 3 peaks and minimum point between distance increased, and shank 2 is connected with connecting rod 3, so shank 2 peak and minimum point between distance also increased, the stroke that is shank 2 has increased, can adapt to the cloth of different-thickness.
In order to ensure that dish 5.2 can play the position-limiting action of eccentric ratio pin 5 at two extreme positions partially, on inclined to one side dish 5.2 circumference, any point is all greater than the diameter of the first axle 5.1 and the second axle 5.3 to the horizontal range at Pian Pan 5.2 centers, and the diameter of said inclined to one side dish 5.2 also refers to that minimum diameter is all large than the diameter of the first axle 5.1 and the second axle 5.2 here; Connecting rod 3 upper ends are connected with crank 4 through eccentric ratio pin 5, and connecting rod 3 ends, upper end are provided with an axially extending bore 3.1, the first axles 5.1 and are rotatably assorted in the axially extending bore 3.1 of connecting rod 3, and the second axle 5.3 is connected with crank 4 is removable.
In order conveniently to regulate the stroke of shank 2, the present invention is specially axially bolted with adjustment screw 6 in the outer end of the first axle 5.1, and be lined with the spacing shim 7 that prevents connecting rod 3 top axial plaies, axially stretch out head 1 left cover at place of adjustment screw 6 is provided with and is convenient to screwdriver and inserts and twist the screw 1.1 of adjustment screw 6; Only need to the interior insertion of screw 1.1 from head 1 left cover by screwdriver, turn adjustment screw 6, clockwise or rotate counterclockwise, rotation that just can straight line eccentric ratio pin 5, realizes the variation of the connecting rod 3 upper end radiuses of gyration, has also just realized the stroke variation of shank 2.So offer screw 1.1 in head 1 left cover, in the time of adjustment stroke, do not need to take apart head 1 cover and miscellaneous part, just can realize the adjusting of stroke, very convenient, and concerning the operating personnel who regulates, do not need very professional, common machinist all can adjust, adaptability and convenience are wide.
In order to allow inclined to one side dish 5.2 realize the limit function of its two extreme positions, dish 5.2 circumferences are made up of end to end orthodrome 5.2.1, left straight line 5.2.2, small arc-shaped 5.2.3, right straight line 5.2.4 partially, small arc-shaped 5.2.3 radius is less than orthodrome 5.2.1 radius, after eccentric ratio pin 5 is arranged on crank 4, crank 4 has a limiting platform face 4.1 below dish 5.2 partially, partially coils 5.2 left straight line 5.2.2 or the limiting platform face 4.1 of right straight line 5.2.4 and crank 4 and offsets.When stroke is during in maximum, partially coil 5.2 left straight line 5.2.2 and the limiting platform face 4.1 of crank 4 and offset.When stroke is in hour, partially coil limiting platform face 4.1 5.2 or right straight line 5.2.4 and crank 4 and offset.
Small arc-shaped 5.2.3 radian on dish 5.2 is 90 ° partially, that is to say that inclined to one side dish 5.2 rotates 90 °, just can realize the minimum and maximum variation of shank 2 strokes.
In order to reduce the friction between the first axle 5.1 and the axially extending bore 3.1 of connecting rod 3, also join tightness and service life in order to improve to turn, the first axle 5.1 covers have needle bearing, needle bearing is engaged in the axially extending bore 3.1 of connecting rod 3 upper ends, connecting rod 3 upper ends are provided with the oil-feed groove 3.2 of being convenient to needle bearing fuel feeding, connecting rod 3 is hollow setting, and the lower end of connecting rod 3 is provided with an oil outlet 3.3, and oil outlet 3.3 communicates with oil-feed groove 3.2; One side of connecting rod 3 lower ends is hinged with shank and pricks 8, shank is pricked 8 inside, lower end that are plugged on connecting rod 3, shank is pricked a 8 connection oil outlet 3.3, shank is pricked 8 and is clipped on shank 2, the hinged slide block 9 of opposite side of connecting rod 3 lower ends, slide block 9 sides are provided with a slide 10, and slide 10 is fixed in casing, slide 10 is provided with a vertical chute 10.1, and slide block 9 sliding fits are in the chute 10.1 of slide 10.Oil-feed groove 3.2 is established in the upper end of connecting rod 3, sets out oilhole 3.3 in the lower end of connecting rod 3, realizes the connection of oil circuit, the unnecessary lubricating oil in upper end flow to lower end for the shank of lower end prick 8 and slide block 9 lubricated, the consumption of saving lubricating oil.
In order to reduce the friction between shank 2 and casing, ensure the service life of shank 2, outside shank 2 top and bottom, all cover has copper sheathing 11, copper sheathing 11 to be arranged on respectively head 1 top and the bottom of casing.
For the ease of the adjusting of eccentric ratio pin 5, described eccentric ratio pin 5 is removable to be arranged on crank 4, that is to say that the second axle 5.3 is connected with crank 4 is removable, refer to and on crank 4, have a circular fixture block, the opening part of circular fixture block is provided with bolt 4.2, the second axle 5.3 is positioned at the circular port of circular fixture block, is realized the clamping of circular fixture block or is unclamped by bolt 4.2.The first described axle 5.1 is identical with the second axle 5.3 diameters.
Between the axis of the first described axle 5.1 and the second axle 5.3 axis, differ 1-2mm.In the present embodiment, between the axis of the first axle 5.1 and the second axle 5.3 axis, differ 1mm.The radius of gyration of connecting rod 3 upper ends has increased 1mm, and diameter has increased 2mm exactly, and the stroke of shank 2 is equivalent to increase 2mm like this.
Operation principle of the present invention is: if the stroke of the shank 2 of original state is minimum, as shown in Figure 9 and Figure 10, in the time of the thicker cloth of sewing thickness, need to increase needle bar stroke, operate as follows: first unclamp the bolt 4.2 on crank 4, eccentric ratio pin 5 is just rotatable so, insert again the screw 1.1 of head 1 left cover by screwdriver, the end of screwdriver and adjustment screw 6 match, drive adjustment screw 6 to rotate counterclockwise, the rotation of adjustment screw 6, drive rotating counterclockwise of eccentric ratio pin 5, the rotation of eccentric ratio pin 5, dish 5.2 is also followed rotation partially, on dish 5.2, the left end of the orthodrome 5.2.1 on circumference rotates until encounter the limiting platform face 4.1 on crank 4 partially, as shown in Figure 7 and Figure 8, now the axis of the first axle 5.1 than the axis height of the second axle 5.3 1mm (eccentric throw of setting in the present embodiment), the so rotation diameter of connecting rod 3 upper ends 2mm that just become large, needle bar stroke has increased 2mm naturally, after adjusting completes, bolt 4.2 is tightened again, the second axle 5.3 is clamped.
If the stroke of the shank 2 of original state is the highest, above so similar, clockwise rotate by adjustment screw 6, encounter limiting platform face 4.1 until partially coil the right straight line 5.2.4 end of the orthodrome 5.2.1 side on 5.2, this first axle 5.1 and the second axle 5.3 are in same level, that is to say that the axis of the first axle 5.1 and the second axle 5.3 axis, in same level, have reduced the radius of gyration, needle bar stroke has also diminished.
Certainly between the extreme position of two rotations of eccentric ratio pin 5, also have multiple travel position, eccentric ratio pin 5 does not forward extreme position to and just stops in other words, the present embodiment minimum and maximum stroke of just having given an example.
Claims (8)
1. the Sewing machines that needle bar stroke is adjustable, comprise the shank (2), connecting rod (3), crank (4), main shaft and the motor that are arranged on head of sewing machine (1), main shaft is arranged on it sewing machine, one end of main shaft is connected with crank (4) by bearing, the other end is connected with motor through Timing Belt, connecting rod (3) upper end is connected with crank (4), and lower end is connected with shank (2); By the rotation of driven by motor main shaft, the rotation of main shaft drives crank (4) to rotate, and crank (4) drivening rod (3) rotates, and shank (2) is followed connecting rod (3) realization and pumped; It is characterized in that: also comprise eccentric ratio pin (5), described connecting rod (3) upper end is connected with crank (4) through eccentric ratio pin (5), and described eccentric ratio pin (5) is removable to be arranged on crank (4).
2. the adjustable Sewing machines of needle bar stroke according to claim 1, it is characterized in that: described eccentric ratio pin (5) is axially connected to form by the first axle (5.1), inclined to one side dish (5.2), the second axle (5.3), the axis of the first axle (5.1) and not conllinear of the second axle (5.3) axis, on inclined to one side dish (5.2) circumference, any point is all greater than the diameter of the first axle (5.1) and the second axle (5.3) to the horizontal range of partially coiling (5.2) center, connecting rod (3) end, upper end is provided with an axially extending bore (3.1), the first axle (5.1) is rotatably assorted in the axially extending bore (3.1) of connecting rod (3), the outer end of the first axle (5.1) is axially bolted with adjustment screw (6), and be lined with the spacing shim (7) that prevents connecting rod (3) top axial play, axially stretch out head (1) left cover at place of adjustment screw (6) is provided with and is convenient to screwdriver and inserts and twist the screw (1.1) of adjustment screw (6), the second axle (5.3) and removable being connected of crank (4), dish (5.2) circumference is by end to end orthodrome (5.2.1) partially, left straight line (5.2.2), small arc-shaped (5.2.3), right straight line (5.2.4) composition, small arc-shaped (5.2.3) radius is less than orthodrome (5.2.1) radius, after eccentric ratio pin (5) is arranged on crank (4), crank (4) has a limiting platform face (4.1) in the below of partially coiling (5.2), the left straight line (5.2.2) of dish (5.2) or right straight line (5.2.4) offset with the limiting platform face (4.1) of crank (4) partially.
3. the adjustable Sewing machines of needle bar stroke according to claim 2, it is characterized in that: described the first axle (5.1) is rotatably assorted and in the axially extending bore (3.1) of connecting rod (3), refers to that the first axle (5.1) cover has needle bearing, needle bearing is engaged in the axially extending bore (3.1) of connecting rod (3) upper end, connecting rod (3) upper end is provided with the oil-feed groove (3.2) of being convenient to needle bearing fuel feeding, connecting rod (3) is hollow setting, the lower end of connecting rod (3) is provided with an oil outlet (3.3), oil outlet (3.3) communicates with oil-feed groove (3.2), one side of connecting rod (3) lower end is hinged with shank and pricks head (8), shank bundle head (8) is plugged on the inside, lower end of connecting rod (3), shank is pricked head (8) and is communicated with oil outlet (3.3), shank is pricked head (8) and is clipped on shank (2), the hinged slide block of opposite side (9) of connecting rod (3) lower end, slide block (9) side is provided with a slide (10), slide (10) is fixed in casing, slide (10) is provided with a vertical chute (10.1), slide block (9) sliding fit is in the chute (10.1) of slide (10).
4. the Sewing machines adjustable according to the needle bar stroke described in claim 2 or 3, it is characterized in that: outside described shank (2) top and bottom, all cover has copper sheathing (11), copper sheathing (11) to be arranged on respectively head (1) top and the bottom of casing.
5. the adjustable Sewing machines of needle bar stroke according to claim 2, it is characterized in that: described the second axle (5.3) and crank (4) be removable to be connected and to refer on crank (4), there is a circular fixture block, the opening part of circular fixture block is provided with bolt (4.2), the second axle (5.3) is positioned at the circular port of circular fixture block, is realized the clamping of circular fixture block or is unclamped by bolt (4.2).
6. the adjustable Sewing machines of needle bar stroke according to claim 3, is characterized in that: small arc-shaped (5.2.3) radian on described inclined to one side dish (5.2) is 90 °.
7. the adjustable Sewing machines of needle bar stroke according to claim 2, is characterized in that: described the first axle (5.1) is identical with the second axle (5.3) diameter.
8. the adjustable Sewing machines of needle bar stroke according to claim 2, is characterized in that: between the axis of described the first axle (5.1) and the second axle (5.3) axis, differ 1-2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410384680.1A CN104131422B (en) | 2014-07-29 | 2014-07-29 | Sewing machine with adjustable needle bar stroke |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410384680.1A CN104131422B (en) | 2014-07-29 | 2014-07-29 | Sewing machine with adjustable needle bar stroke |
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| Publication Number | Publication Date |
|---|---|
| CN104131422A true CN104131422A (en) | 2014-11-05 |
| CN104131422B CN104131422B (en) | 2017-05-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410384680.1A Active CN104131422B (en) | 2014-07-29 | 2014-07-29 | Sewing machine with adjustable needle bar stroke |
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| Country | Link |
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| CN (1) | CN104131422B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109706643A (en) * | 2019-01-24 | 2019-05-03 | 李永坚 | Needle bar part connection component |
| CN110055690A (en) * | 2019-04-29 | 2019-07-26 | 吴江阳光科技缝纫机有限公司 | The lubricating arrangement of one koji wrist machine |
| CN110804808A (en) * | 2019-11-04 | 2020-02-18 | 辽宁银河新星轨道交通装备有限公司 | Sewing machine for locomotive air filter element |
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| CN1226617A (en) * | 1998-02-17 | 1999-08-25 | 大和缝纫机制造株式会社 | Needle bar stroke adjust device of sewing machine |
| JP2002219292A (en) * | 2001-01-26 | 2002-08-06 | Pegasus Sewing Mach Mfg Co Ltd | Needle-bar stroke changer of sewing machine |
| CN201495386U (en) * | 2009-08-10 | 2010-06-02 | 浙江宝石缝纫机股份有限公司 | Flat seaming machine needle bar stroke adjustable mechanism |
| CN203270255U (en) * | 2012-03-30 | 2013-11-06 | 兄弟工业株式会社 | Sewing machine |
| CN204058912U (en) * | 2014-07-29 | 2014-12-31 | 杰克缝纫机股份有限公司 | The Sewing machines that needle bar stroke is adjustable |
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2014
- 2014-07-29 CN CN201410384680.1A patent/CN104131422B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1226617A (en) * | 1998-02-17 | 1999-08-25 | 大和缝纫机制造株式会社 | Needle bar stroke adjust device of sewing machine |
| JP2002219292A (en) * | 2001-01-26 | 2002-08-06 | Pegasus Sewing Mach Mfg Co Ltd | Needle-bar stroke changer of sewing machine |
| CN201495386U (en) * | 2009-08-10 | 2010-06-02 | 浙江宝石缝纫机股份有限公司 | Flat seaming machine needle bar stroke adjustable mechanism |
| CN203270255U (en) * | 2012-03-30 | 2013-11-06 | 兄弟工业株式会社 | Sewing machine |
| CN204058912U (en) * | 2014-07-29 | 2014-12-31 | 杰克缝纫机股份有限公司 | The Sewing machines that needle bar stroke is adjustable |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109706643A (en) * | 2019-01-24 | 2019-05-03 | 李永坚 | Needle bar part connection component |
| CN109706643B (en) * | 2019-01-24 | 2021-08-31 | 李永坚 | Sewing machine needle bar part connecting assembly |
| CN110055690A (en) * | 2019-04-29 | 2019-07-26 | 吴江阳光科技缝纫机有限公司 | The lubricating arrangement of one koji wrist machine |
| CN110055690B (en) * | 2019-04-29 | 2024-05-28 | 吴江阳光科技缝纫机有限公司 | Lubricating device of wrist bending machine |
| CN110804808A (en) * | 2019-11-04 | 2020-02-18 | 辽宁银河新星轨道交通装备有限公司 | Sewing machine for locomotive air filter element |
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| Publication number | Publication date |
|---|---|
| CN104131422B (en) | 2017-05-03 |
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