CN101608381B - Buttonhole sewing machine - Google Patents
Buttonhole sewing machine Download PDFInfo
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- CN101608381B CN101608381B CN2009101012522A CN200910101252A CN101608381B CN 101608381 B CN101608381 B CN 101608381B CN 2009101012522 A CN2009101012522 A CN 2009101012522A CN 200910101252 A CN200910101252 A CN 200910101252A CN 101608381 B CN101608381 B CN 101608381B
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- fork
- balancing point
- slide block
- needle
- shank
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Abstract
A buttonhole sewing machine comprises a frame, an upper frame, a boss rod, a needle bar for arranging an internal needle, a movable feed table with an x-y horizontal coordinate system and a curved needle below the feed table, the boss rod drives the needle bar, the needle bar moves up and down for punching and forms a buttonhole seam with the curved needle, a needle vibrating cam is arranged on the front end part of the upper frame and drives a fork reciprocating lever to move up and down, the fork reciprocating lever is articulated with a feed bar mechanism by a connecting rod, the rear end of the feed bar mechanism is articulated with a shifting rod, a shifting fork on the shifting rod is articulated with a needle vibrating slide block to cause the needle vibrating slide block to move up and down, and a trapezoid flume on the needle vibrating slide block promotes the needle bar to horizontally move, thus realizing needle vibrating motion. The needle vibrating mechanism has compact structure, reduces driving space, transmission links and accumulated clearance errors and has more stable transmission.
Description
Technical field
The present invention relates to a kind of Buttonhole sewing machine, refer in particular to improvement the Buttonhole sewing machine needle vibrating mechanism.
Background technology
Usually chain-type stitch button (button) hole sewing machine needle bar motion all has two mechanisms to drive, i.e. shank up-down mechanism and balancing point motion, and their version is respectively different to some extent.As: Chinese patent once disclosed a kind of " round end button holing sewing machine " (Japan; Publication number CN1924142A; Open day 2007.3.7); Comprise: install suture needle shank, make shank up-down mechanism, the needle swinging mechanism that makes the shank swing that this shank moves up and down, make the curved needle seat rotating mechanism of the shank rotating mechanism that shank can rotate around its axle center and the curved needle seat that can make the supporting looper and the rotational synchronization ground rotation of said shank; It is characterized in that; Said shank up-down mechanism has: pass to the transmission mechanism that moves up and down of shank with the needle bar crank of the main shaft interlock of said Sewing machines and with said needle bar crank interlock and with the driving force up and down of said needle bar crank, this round end button holing sewing machine is provided with the lubricating oil feed mechanism through a plurality of sliding part supplying lubricating oils of the said transmission mechanism that moves up and down of oily alignment.Needle vibrating mechanism shown in the 23rd page of Fig. 4 in this patent application document specification; Moving up and down of shank is to lean on the axle of going up along machine upper casing direction to rotate; Through toggle eedle is moved up and down; Have on the transverse axis perpendicular to axle on this in the centre of fuselage the balancing point cam is installed, make the motion of two rocking bars, drive the balancing point slide block that has skewed slot through fork again and move up and down through cam; The locating piece horizontal direction that skewed slot drives on the shank moves, thereby makes shank produce the balancing point motion.The prior art drawback is: transmission link is more, and the transmission space is bigger, and it is compact that structure is owed, and the accumulative total gap error is not little.
Summary of the invention
The object of the present invention is to provide a kind of Buttonhole sewing machine, its needle vibrating mechanism compact conformation has reduced the transmission space; Reduced transmission link; Reduced the accumulative total gap error, more stable transmission can also be adjusted the size of the shank amplitude of oscillation arbitrarily in certain scope.
For achieving the above object, the solution that the present invention takes is: a kind of Buttonhole sewing machine, it comprise pin in the casing, machine upper casing, arbor, installation shank, have cloth pushing table that the x-y horizontal coordinates moves and the looper below this cloth pushing table; Arbor drives shank; Shank is made the linear slit of Ci Bu motion up and down and looper formation buttonhole, and the balancing point cam is arranged on the front end position of machine upper casing, and balancing point cam drive one fork-shaped reciprocating lever moves up and down; The fork-shaped reciprocating lever passes through a rod hinge connection in a swing-bar mechanism; The hinged driving lever in the rear end of swing-bar mechanism, the shift fork on this driving lever is articulated in the balancing point slide block, and the balancing point slide block is moved up and down; Trapezoidal skewed slot on the balancing point slide block promotes shank and moves horizontally, and realizes the balancing point motion.
Because its needle vibrating mechanism compact conformation of this Buttonhole sewing machine has reduced the transmission space, has reduced transmission link, reduced the accumulative total gap error, more stable transmission.
Description of drawings
Fig. 1 is a Buttonhole sewing machine partial interior structural representation.
Fig. 2 is the annexation sketch map between balancing point cam, fork-shaped reciprocating lever, connecting rod and the swing-bar mechanism.
Fig. 3 is a kind of sewing thread trace sketch map of Buttonhole sewing machine.
Fig. 4 is the swing-bar mechanism structural representation.
Fig. 5 is driving lever and balancing point slide block structure sketch map.
Among the figure: 1, balancing point cam, 1a, the shaft shoulder, 1b, back-up ring, 2, the fork-shaped reciprocating lever, 3, the axis of guide, 4, connecting rod, 5, axle; 6, bearing one, 7, bearing two, 8, casing, 9, the machine upper casing, 10, screw, 11, regulating shaft, 12, nut; 13, swing-bar mechanism, 13a, first section fork, 13b, second section fork, 14, hinge, 15, the elongated slot screw, 16, driving lever; 17, lock ring, 18, the hinge plate, 19, the slide block back-up ring, 20, the slide block screw, 21, the balancing point slide block, 22, the shank rotating cylinder; 23, trapezoidal axle, 24, packing ring, 25, arbor, 26, shank, 27, hinge, 28, trapezoidal skewed slot.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof the present invention is remake description.
Referring to Fig. 1, Fig. 2, Fig. 4 and Fig. 5, a kind of Buttonhole sewing machine, it comprises casing 8, machine upper casing 9, arbor 25, install in pin shank 26, have cloth pushing table that the x-y horizontal coordinates moves and the looper below this cloth pushing table; Arbor 25 drives shank 26; Shank 26 is made the linear slit of Ci Bu motion up and down and looper formation buttonhole, and balancing point cam 1 is arranged on the front end position of machine upper casing 9, and balancing point cam 1 drives a fork-shaped reciprocating lever 2 and moves up and down; Fork-shaped reciprocating lever 2 is articulated in a swing-bar mechanism 13 through a connecting rod 4; The hinged driving lever 16 in the rear end of swing-bar mechanism 13, the shift fork on this driving lever 16 is articulated in balancing point slide block 21, and balancing point slide block 21 is moved up and down; Trapezoidal skewed slot 28 on the balancing point slide block 21 promotes shank 26 and moves horizontally, and realizes the balancing point motion.
Referring to Fig. 1 and Fig. 2; Described balancing point cam 1 is fixed on the axle 5; The axle 5 through its two ends bearing 1 is set respectively, bearing 27 is set on the machine upper casing 9; The prong of fork-shaped reciprocating lever 2 is stuck on the balancing point cam 1, has shaft shoulder 1a and back-up ring 1b on the balancing point cam 1, and shaft shoulder 1a and back-up ring 1b carry out axial limiting to fork-shaped reciprocating lever 2 both sides.
Referring to Fig. 2; Inserted the axis of guide 3 of above-below direction lead effect in the described fork-shaped reciprocating lever 2; The axis of guide 3 usefulness screws 10 are fixed on the machine upper casing 9; Lower end, other end articulated type that one end articulated type of connecting rod 4 is connected fork-shaped reciprocating lever 2 are connected on the regulating shaft 11, and the other end of this regulating shaft 11 is fastened on nut 12 on the arc groove of swing-bar mechanism 13, and the center of circle of the arc groove on the swing-bar mechanism 13 is hinge 14 axial lines of connecting rod 4 upper ends; The arc radius of arc groove equals connecting rod 4 two ends hinges 14 axial line distance length; The center of circle of arc groove is connecting rod 4 and fork-shaped reciprocating lever 2 pin joints, unclamps nut 12, and regulating shaft 11 slides in the arc groove of swing-bar mechanism 13.This is used to regulate the size of the fork amplitude of oscillation, can obtain the sewing thread trace of different amplitude of oscillation sizes like this.Again because the center of circle of the arc groove on the swing-bar mechanism 13 is hinge 14 axial lines of connecting rod 4 upper ends, so regulating shaft 11 optional position in arc groove can not cause moving of swing-bar mechanism 13.
Referring to Fig. 4; Described swing-bar mechanism 13 is made up of first section fork 13a and second section fork 13b two parts; Second section fork 13b is enclosed within on the hinge sleeve pipe of first section fork 13a and is fastening with two elongated slot screws 15; When two elongated slot screws 15 unclamped, second section fork 13b swung an angle around the hinge sleeve pipe of first section fork 13a.Referring to Fig. 3, interior pin position dimension a has certain requirements, and owing to processing, the alignment error of many elements in the shank system, pin position dimension a's is stable in the influence.Because the particular design of swing-bar mechanism 13; When two elongated slot screws 15 unclamp; Second section fork 13b can swing an angle around the hinge sleeve pipe of first section fork 13a, adjusts the interior pin position dimension a of requirement through this link, the stable problem of pin position dimension a in solving well.
Referring to Fig. 4 and Fig. 5; Described driving lever 16 is assemblied in the guide cylinder of swing-bar mechanism 13 and makes axial location with lock ring 17; It is hinged with hinge plate 18 that the other end of driving lever 16 is fork-shaped, and driving lever 16 is formed a universal structure with hinge plate 18, and there is a hole greater than balancing point slide block 21 diameters of axle centre of hinge plate 18; The hole that packing ring 25 and hinge plate 18 are passed in balancing point slide block 21 upper ends penetrates slide block back-up ring 19 and fastening with slide block screw 20 again, and the hole of hinge plate 18 and the diameter of axle of balancing point slide block 21 upper ends are gapped.Like this, hinge plate 18 just can drive balancing point slide block 21 and move up and down, and the hole of hinge plate 18 and the diameter of axle of balancing point slide block 21 upper ends have very big gap, are used for offsetting the displacement of swing-bar mechanism 13 horizontal directions.
Referring to Fig. 4 and Fig. 5; Described shank slide block 21 two sides are respectively equipped with trapezoidal skewed slot 28; Two trapezoidal axles 23 that are fixed on the shank rotating cylinder 22 are stuck in two trapezoidal skewed slots 28; When balancing point slide block 21 moved up and down, trapezoidal axle 23 produced simultaneously laterally with shank rotating cylinder 22 and moves, and shank slide block 21 drives shank 26 and does the balancing point motion.
This Buttonhole sewing machine also has following characteristics:
(1) this Buttonhole sewing machine makes balancing point cam 1 be easy to realize being arranged on machine upper casing 9 front end positions through axle 5; Fork-shaped reciprocating lever 2 is provided with spacing at the axis direction of balancing point cam 1 through shaft shoulder 1a and back-up ring 1b; The axis of guide 3 plays position-limiting action to compound lever 2 along the vertical direction in perpendicular to the plane of balancing point cam 1 axis, the axis of guide 3 also plays the above-below direction guide effect in this plane.
(2) swing-bar mechanism 13 can be regulated (amplitude of oscillation amplitude of oscillation scope 0-3.5mm) of the original position and the amplitude of oscillation size of output; Input at swing-bar mechanism 13; Just hinged with connecting rod 4 end can realize changing amplitude of oscillation size through moving the size that interface point change first section fork 13a and second section fork 13b; The pin position also changed thereupon in but the change of amplitude of oscillation size but brought, and need readjust.In order to address this problem; This end of needle vibrating mechanism 13 is designed to circular arc mechanism; Arc radius equals connecting rod 4 length, and the center of circle is connecting rod 4 and fork-shaped reciprocating lever 2 pin joints, when connecting rod 4 moves change swing-bar mechanism 13 length along circular arc, can not produce pin change in location in the shank 26 again.
(3) movement locus of the other end of swing-bar mechanism 13 is the circular arcs around hinge 27; This end is designed to a guide cylinder (tube-in-tube structure), and this guide cylinder is vertical with the swaying direction of swing-bar mechanism 13, and the driving lever 16 that connects balancing point slide block 21 is assemblied in this guide cylinder; The other end of driving lever 16 is the hinged hinge plate 18 of fork-shaped; There is a hole greater than balancing point slide block 21 diameters of axle centre of hinge plate 18, therefore overcomes the horizontal displacement of swing-bar mechanism 13 end circular motions, and balancing point slide block 21 is moved up and down.
Claims (4)
1. Buttonhole sewing machine; It comprises casing (8), machine upper casing (9), arbor (25), install in pin shank (26), have cloth pushing table that the x-y horizontal coordinates moves and the looper below this cloth pushing table, arbor (25) drives shank (26), shank (26) is made the linear slit that Ci Bu motion up and down and looper constitute buttonhole; Balancing point cam (1) is arranged on the front end position of machine upper casing (9); Balancing point cam (1) drives a fork-shaped reciprocating lever (2) and moves up and down, and fork-shaped reciprocating lever (2) is articulated in a swing-bar mechanism (13) through a connecting rod (4), the hinged driving lever in the rear end of swing-bar mechanism (13) (16); Shift fork on this driving lever (16) is articulated in balancing point slide block (21); Balancing point slide block (21) is moved up and down, and the trapezoidal skewed slot (28) on the balancing point slide block (21) promotes shank (26) and moves horizontally, and realizes the balancing point motion; Described balancing point cam (1) is fixed on the axle (5); The axle (5) through its two ends bearing one (6) is set respectively, bearing two (7) is set on the machine upper casing (9); The prong of fork-shaped reciprocating lever (2) is stuck on the balancing point cam (1); Have the shaft shoulder (1a) and back-up ring (1b) on the balancing point cam (1), the shaft shoulder (1a) and back-up ring (1b) carry out axial limiting to fork-shaped reciprocating lever (2) both sides; It is characterized in that: the axis of guide (3) of having inserted the effect of above-below direction lead in the described fork-shaped reciprocating lever (2); The axis of guide (3) is fixed on the machine upper casing (9) with screw (10); Lower end, other end articulated type that one end articulated type of connecting rod (4) is connected fork-shaped reciprocating lever (2) are connected on the regulating shaft (11); The other end of this regulating shaft (11) is fastened on the arc groove of swing-bar mechanism (13) with nut (12); The center of circle of the arc groove on the swing-bar mechanism (13) is hinge (14) axial line of connecting rod (4) upper end, and the arc radius of arc groove equals connecting rod (4) two ends hinges (14) axial line distance length, and the center of circle of arc groove is connecting rod (4) and fork-shaped reciprocating lever (2) pin joint; Unclamp nut (12), regulating shaft (11) slides in the arc groove of swing-bar mechanism (13).
2. Buttonhole sewing machine according to claim 1; It is characterized in that: described swing-bar mechanism (13) is made up of first section fork (13a) and second section fork (13b) two parts; Second section fork (13b) is enclosed within on the hinge sleeve pipe of first section fork (13a) and is fastening with two elongated slot screws (15); Two elongated slot screws (15) are when unclamping, and second section fork (13b) swung an angle around the hinge sleeve pipe of first section fork (13a).
3. Buttonhole sewing machine according to claim 1; It is characterized in that: described driving lever (16) is assemblied in the guide cylinder of swing-bar mechanism (13) and makes axial location with lock ring (17); It is hinged with hinge plate (18) that the other end of driving lever (16) is fork-shaped; Driving lever (16) is formed a universal structure with hinge plate (18); There is a hole greater than balancing point slide block (21) diameter of axle centre of hinge plate (18), and the hole that packing ring (25) and hinge plate (18) are passed in balancing point slide block (21) upper end penetrates slide block back-up ring (19) and fastening with slide block screw (20) again, and the diameter of axle of the hole of hinge plate (18) and balancing point slide block (21) upper end is gapped.
4. Buttonhole sewing machine according to claim 1; It is characterized in that: described balancing point slide block (21) two sides are respectively equipped with trapezoidal skewed slot (28); Two trapezoidal axles (23) that are fixed on the shank rotating cylinder (22) are stuck in two trapezoidal skewed slots (28); When balancing point slide block (21) when moving up and down, trapezoidal axle (23) produces simultaneously laterally with shank rotating cylinder (22) and moves, and balancing point slide block (21) drive shank (26) is made balancing point and moved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101012522A CN101608381B (en) | 2009-07-23 | 2009-07-23 | Buttonhole sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101012522A CN101608381B (en) | 2009-07-23 | 2009-07-23 | Buttonhole sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101608381A CN101608381A (en) | 2009-12-23 |
| CN101608381B true CN101608381B (en) | 2012-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101012522A Expired - Fee Related CN101608381B (en) | 2009-07-23 | 2009-07-23 | Buttonhole sewing machine |
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| Country | Link |
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| CN (1) | CN101608381B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102182020B (en) * | 2011-05-04 | 2012-12-19 | 张章生 | Needle bar oscillating transmission mechanism for eyelet button hole sewing machine |
| CN103114391B (en) * | 2013-03-15 | 2015-07-22 | 刘岩根 | Needle rod connecting rod device |
| CN103696162A (en) * | 2013-12-19 | 2014-04-02 | 吴江市菀坪宝得利缝制设备机械厂 | Linkage needle bar transmission mechanism for sewing machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5819674A (en) * | 1996-09-19 | 1998-10-13 | Amf Reece, Inc. | Bight mechanism for a buttonhole sewing machine |
| CN2546472Y (en) * | 2002-05-28 | 2003-04-23 | 启翔股份有限公司 | Needle swing structure of needle feeding device in sewing machine |
| CN1924146A (en) * | 2005-08-30 | 2007-03-07 | 兄弟工业株式会社 | Sartorius and needle pole driving device for sartorius |
| CN201473726U (en) * | 2009-07-23 | 2010-05-19 | 浙江胜佳特种缝制设备有限公司 | Button-hole sewing machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4286963B2 (en) * | 1999-04-28 | 2009-07-01 | Ｊｕｋｉ株式会社 | Sewing machine needle swing device |
-
2009
- 2009-07-23 CN CN2009101012522A patent/CN101608381B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5819674A (en) * | 1996-09-19 | 1998-10-13 | Amf Reece, Inc. | Bight mechanism for a buttonhole sewing machine |
| CN2546472Y (en) * | 2002-05-28 | 2003-04-23 | 启翔股份有限公司 | Needle swing structure of needle feeding device in sewing machine |
| CN1924146A (en) * | 2005-08-30 | 2007-03-07 | 兄弟工业株式会社 | Sartorius and needle pole driving device for sartorius |
| CN201473726U (en) * | 2009-07-23 | 2010-05-19 | 浙江胜佳特种缝制设备有限公司 | Button-hole sewing machine |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2000-308772A 2000.11.07 |
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| Publication number | Publication date |
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| CN101608381A (en) | 2009-12-23 |
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