CN1114370A - Device for adjusting heigll of presser feet of sewing machine - Google Patents
Device for adjusting heigll of presser feet of sewing machine Download PDFInfo
- Publication number
- CN1114370A CN1114370A CN94120481A CN94120481A CN1114370A CN 1114370 A CN1114370 A CN 1114370A CN 94120481 A CN94120481 A CN 94120481A CN 94120481 A CN94120481 A CN 94120481A CN 1114370 A CN1114370 A CN 1114370A
- Authority
- CN
- China
- Prior art keywords
- presser feet
- connecting rod
- cloth
- adjusting
- fulcrum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B31/00—Workpiece holders or hold-downs in machines for sewing leather
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The present invention provides a device for adjusting the height of inner presser of the sewing machine capable of adjusting the height from the needle plate of the inner presser. The device is provided with an oscillating body which is oscillated with sewing machine mechanisms, inner presser bar which has an inner presser and moves up and down with the oscillating body, and adjustment means and which change the oscillation center of the oscillating body and adjust the height of setting the inner presser bar.
Description
The present invention relates to a kind of sewing-machine foot arrangement for adjusting height.
Make cloth in the Sewing machines that X, Y direction are made when transferring carrying tooth as embroidery machine etc.,, be provided with and connected the foot device that periphery is partly depressed by pin with acting hurriedly in a messy situation that pin together rises and caused in order to prevent cloth because with the friction of pin when pin rises, cloth.Usually, this installs when pin leaves the cloth rising, uses presser feet cloth presser downwards, after pin breaks away from the rising of cloth ground fully, presser feet is together risen with pin.
The example of existing this foot device is opened style disclosed in clear 63-296783 number, as shown in the Fig. 6 here just like the Japanese patent gazette spy.
Among the figure, on sewing machine arm 2, be provided with by figure in not the shank elevating mechanism of expression effect, can with on the shank 6 that moves up and down accordingly of axle 4 rotation.Pin 8 is being adorned in the lower end of this shank 6.
The swing of connecting rod 12 is reached on the swing axle bed 18, and this swing axle bed 18 is swung on the arrow A direction.Thus, swing arm 22 is also swung on the arrow B direction, and this motion is passed to the connecting rod 24 that is linked on this swing arm 22 and made it do the motion shown in the arrow C.The end in fulcrum D side of L shaped connecting rod 26 is attached on the connecting rod 24, and the central fulcrum E of this L shaped connecting rod 26 is connected on the connecting rod 28, and other end fulcrum H then is attached on the connecting rod 30.Connecting rod 28 can be that the center is installed on the sewing machine stand rotationally with central fulcrum J, under shown position, for make that junction surface 28N is bonded on the latch 31, to be fixed, to make L shaped connecting rod 26 be that circular motion is up and down done along direction shown in the arrow F in the center with this fulcrum E in the position of the fulcrum E of L shaped connecting rod 26.By connecting rod 30 presser feet pole socket 32 is passed in this motion.Because presser feet pole socket 32 can only move up and down along the guide groove 34 that forms on the sewing machine arm, thereby just motion up and down as shown by arrow G.
By means of above-mentioned action, the presser bar that is fixed on the presser feet pole socket 32 36 is done and the moving up and down of the rotational synchronization of last axle 4.So, be fixed on presser feet 38 on the presser bar 36 with screw 42 and when pin 8 descends, be pressed on the cloth 40, wear the cloth during 40, be in the stationary state that cloth 40 is pushed down in pin 8 thorns.When leaving fully, pin 8 when cloth rises presser feet 38 is also risen.
Yet, the foot device in above-mentioned past, in stitching sewing machine action, the amount of moving up and down of presser feet 38 is certain, if represent the bottom dead centre height (from the height of needle plate) of its motion with N, the N that makes in the action is constant.Therefore, will be with various patterns such as foot-operated Sewing machiness, when cloth is corresponding, make and run under the thick occasion that very big variation arranged of cloth (for example, the cloth number of plies increase of being stitched makes the occasion of fabric thickness thickening), then the front end of presser feet 38 knocks cloth 40 powerfully, can produce fault such as damage cloth.
The purpose of this invention is to provide a kind of device for adjusting heigll of presser feet of Sewing machines that can regulate the down position (from the height of needle plate) of presser feet 38 corresponding to the cloth heavy back.
In order to achieve the above object, the device for adjusting heigll of presser feet of this Sewing machines provided by the present invention, thus it is characterized in that the presser bar that moves up and down linkedly with above-mentioned swing component that it is provided with the swing component swung linkedly with Sewing machines mechanism, has a presser feet, the oscillation center displacement that makes above-mentioned swing component regulate the adjusting device of the setting height of presser bar.
When making oscillation center (rotating fulcrum) left and right displacement of swing component with device for adjusting heigll of presser feet, make that the rotation of the actuation ends of this swing component and swing component is formed to move up and down independently and move up and down corresponding to the left and right displacement amount ground of above-mentioned rotating fulcrum.Thereby can at random regulate the down position (apart from the height of needle plate) of presser feet.
Fig. 1 is the stereogram of the 1st embodiment of foot device that the setting height adjusting device of presser bar of the present invention is arranged,
Fig. 2 is the local amplification view of Fig. 1,
Fig. 3 is the structure chart of the present invention the 2nd embodiment,
Fig. 4 is the structure chart of the present invention the 3rd embodiment,
Fig. 5 is the structure chart of the present invention the 4th embodiment,
Fig. 6 is the stereogram of the foot device of prior art.
Below, according to the embodiment shown in the figure embodiments of the invention are described.
Fig. 1 is the stereogram of the foot device that presser bar setting height adjusting device is arranged of the 1st embodiment of the present invention, and Fig. 2 is the local amplification view of Fig. 1.
In these figure, be provided with on the sewing machine arm 2 make by shank elevating mechanism not shown in the figures its can with on the rotational synchronization ground shank 6 of motion up and down of axle 4.Pin 8 is located at the lower end of this shank 6.
One end of connecting rod 24 is connected on the swing arm 22 with ladder screw 44, and the upper end that forms the swing component 26 of L shaped connecting rod is attached on the other end of connecting rod 24.The right-hand member of this swing component 26 (constitute actuation ends, below be referred to as fulcrum H) is attached at the upper end of connecting rod 30, and the oscillation center of central portion (to call fulcrum E in the following text) links to each other with connecting rod 28.Connecting rod 28 can fulcrum J be that middle heart is rotated.
Though on sewing machine arm 2, be to form internal thread 56 on the track of center when moving with fulcrum D, because it has nothing to do with aim of the present invention, so be omitted at connecting rod 24 right-hand members (ends of ladder screw 44 1 sides).
Below the swing component 26, the check plate 58 that moves down of fulcrum E of restriction swing component 26 is fixedly installed on the sewing machine arm 2, swing component 26 fulcrum E on be provided with the roller 60 that check plate 58 therewith joins.
The lower end of connecting rod 30 is connected spring 64 and presses on the presser feet pole socket 32 of below.The gathering sill 34 that this presser feet pole socket 32 can only form on the sewing machine arm moves up and down.Presser bar 36 is fixed on the presser feet pole socket 32, and presser feet 38 usefulness screws 42 are fixed on the lower end of this presser bar 36.
When last axle 4 rotates, the connecting rod 12 that is connected with eccentric cam 10 is swung.The swing of this connecting rod 12 reaches on the swing axle bed 18, and swing axle bed 18 is swung along the arrow A direction.Thus, swing arm 22 is swung on the arrow B direction.This motion is reached connecting rod 24, connecting rod 24 is moved by the arrow C direction.
As mentioned above, because it is limited by check plate 58 effects at the fulcrum E of swing component 26 roller 60, the roller 60 that join with check plate 58 to be set upwards, so the above-below direction position of the fulcrum E of swing component 26 just is defined.The fulcrum E of swing component 26 is the center, does up and down circular motion as shown by arrow F with this fulcrum E.By connecting rod 30 this motion is reached on the presser feet pole socket 32.Make presser feet pole socket 32 do moving up and down as shown by arrow G along gathering sill 34.
By means of above-mentioned action, the presser bar 36 and the rotational synchronization ground of last axle 4 are moved up and down.As a result, presser feet 38 and pin 8 descend on the periphery of the pin penetrating part that side by side is pressed in cloth 40, wear the cloth during 40 in pin 8 thorns, and stationary state is pushed down, become to cloth 40.When pin 8 leaves the cloth rising fully, presser feet 38 is also risen.
When presser feet 38 leaves the height N variation of needle plate, make pulse motor 52 actions.During pulse motor 52 actions, fulcrum shaft 46 is rotated by helical gear 54,50.Pulse motor 52 makes the corner of fulcrum shaft 46 rotations in 0 ° of-90 ° of scope, is taken as and the thick corresponding suitable angle of cloth.When fulcrum shaft 46 rotated, the fulcrum J of connecting rod 28 did horizontal circular motion shown in arrow K.Act on the swing component 26 by connecting rod 30 owing to pressed to the bias force of below by spring 64, thereby on fulcrum E, acting on downward bias force.Like this, by means of the circular motion of the fulcrum J of above-mentioned connecting rod 28, roller 60 rolls on check plate 58 on one side, on one side at the left and right directions top offset (slip) shown in the arrow M.
When fulcrum E slides to the right of Fig. 1, the fulcrum H of swing component 26 is risen, when sliding left, fulcrum H is descended, so make presser bar 36 and the presser feet 38 and the rotation of last axle 4 irrespectively rise, descend, thereby can change the down position of adjusting presser feet 38, height that can the adjustable range needle plate.
So when the thickness of cloth 40 changes in the sewing process, by means of this action can be thick corresponding to cloth, change the height N of presser feet 38 bottom dead centres.
And then, because check plate 58 is bearing the pressure that is made swing component 26 biased downward by the effect of spring 64, thereby can alleviate the effect that connecting rod 28 is subjected to this kind bias force.In addition, on the fulcrum E of swing component 26, roller 60 is set,, has just reduced swing component 26 and overcome spring 64 and do the friction of land used when arrow M direction is slided by means of the rolling of roller 60.Since the power of additional springs 64 not on fulcrum shaft 46, so the load of pulse motor 52 is just very little, so thereby can reduce the electric current that flows through motor and can select small-sized pulse motor 52 for use.
The driving of pulse motor 52 can automatically be controlled corresponding to cloth is thick.For this reason, for example when tailoring pattern is imported, make the fine motion of x y device, manually fall pin, to determine the position of the thick variation of cloth, the height N number of drive pulses of pulse motor 52 (or be conducted to) that leaves needle plate with this position and at the thick corresponding presser feet 38 of this locational cloth as data, by input or the thick locational pin number that changes of input data setting cloth.In making, when arriving the thick change location of above-mentioned cloth,, just can control automatically thus the height N of presser feet 38 apart from needle plate supplying with pulse motor 52 with the corresponding umber of pulse of height N (or pin number of regulation) of input.Certainly, manually control also with hand control fulcrum shafts 46 such as for example knob dials without pulse motor and be fine.
With Fig. 3 the 2nd embodiment of the present invention is described below.
The 2nd embodiment is about with Sewing machines mechanism interlock, will process the cloth pressuring device of sewing machine that the processing cloth on the cloth seating surface is pushed down off and on.Its structure comprises: presser bar 36 clampings of presser feet 38 will be housed, be fixed on the support plate 65 on the sewing machine arm 2 in the position with shank 6 opposition sides; At the central part of this support plate 65, with ladder screw 66, supporting swingably, forming slotted hole 68a that engages with the connecting pin 67a of the needle bar frame 67 of Sewing machines mechanism and the swing component 68 that circular-arc cam surface 68b is arranged on its free end on its periphery; The dwang of supporting with axle 69a in the upper end of above-mentioned support plate 65, cam follower 69b is arranged on the middle part 69; And one end be attached on the front end of this dwang with an axle 69c, the other end is attached at connecting rod 70 on the presser feet pole socket 70b on the presser bar 36 etc. by axle 70a.
So, along with machine spindle rotates, when shank b moves up and down, make swing component 68 swings by connecting pin 67a and slotted hole 68a, under the effect of its cam surface 68b, make dwang 69 reciprocating motion up and down by cam follower 69b, by connecting rod 70 presser bar 36 is moved up and down.Like this, by means of ladder screw 66 adjusting device of the adjusting presser bar setting height described in the 1st embodiment is arranged on the above-mentioned pendular body 68 rotationally.
Below, by Fig. 4 the 3rd embodiment of the present invention is described.This 3rd embodiment is by by the shank 6 of Sewing machines mechanism and the swing component 71 of swing, and presser bar 36 that moves up and down along with this swing and the presser feet that is installed in these presser bar 36 lower ends 38 constitute.
When shank 6 was descended from the top position, swing component 71 was that the center clockwise rotates with screw axis 73, and driven member 72 is depressed with following cam surface 71a, and presser bar 36 is moved downwards.Along with the rising of shank 6, swing component 71 rotates counterclockwise, and driven member 72 is upwards carried along with cam surface 71a, and presser bar 36 is moved upward.Because an end of above-mentioned swing component 71 is hinged on sewing machine arm 2 with screw axis 73, so just the adjusting device of the adjusting presser feet setting height described in the 1st embodiment is arranged on this swing component 71 rotationally by means of screw axis 73.
Below by Fig. 5 the 4th embodiment of the present invention is described.This 4th embodiment is as illustrated in fig. 4, is placed in linkage 74 between swing component 71 and the presser bar 36 and cam surface 71a is in that tangential cam in the scope of the place ahead constitutes.And, linkage by an end with screw axis 73 hinged on sewing machine arm 2, the other end constitutes with the 1st connecting rod 76 and the 2nd connecting rod 77 of the hinged upper end at presser bar 36 of pin 75, the driven member 78 that is bearing on the 1st connecting rod 76 is contacting with cam surface 71 free to rotately.
Like this, when shank 6 is descended, swing component 71 is clockwise rotated, driven member 78 is descended along the curve of cam surface 71a, thereby presser feet 38 is moved down.When shank 6 is risen, swing component 71 inhours are rotated, because driven member 78 is partly contacting with the below of cam surface 71a,, make presser bar 36 be moved upward, make presser feet 38 and cloth to break away from by the 2nd connecting rod 77 so the 1st connecting rod 76 is rotated along counter-clockwise direction.In this occasion, also with the 3rd embodiment in the same manner, the adjusting device of the setting height of the adjusting presser bar described in the 1st embodiment with screw axis 73 be installed in rotationally on the swing component 71,
Though be provided with the adjusting device of the setting height of regulating presser bar in the above among Shuo Ming the 2nd, the 3rd, the 4th embodiment but can artificially handle with for example knob scale etc. this adjusting device is manually controlled, also can by gear etc. with pulse motor come to this adjusting device control automatically, any because at random to set the height N this point apart from needle plate of presser feet 38 all identical with the 1st embodiment, so can obtain equal effect.
More than said the present invention, can obtain following effect.
(1) because presser feet 38 can at random be set from the height N of needle plate, when descending, damages presser feet cloth so can eliminate.
(2) in the process of making, can not interrupt sewing and change the height N of above-mentioned presser feet.Except improving operating efficiency, can also avoid the problems such as job insecurity of making that in making, cause because of interruption.
Claims (2)
1. the device for adjusting heigll of presser feet of a Sewing machines, the presser bar that swing component that it is provided with and the machine machine of seam is swung linkedly and lower end are equipped with presser feet and are moved up and down linkedly with above-mentioned swing component, at least during pin penetrates in the cloth, presser feet pushes down near the cloth the pin drop point, it is characterized in that:
It regulates and sets the setting device of the upper/lower positions of above-mentioned presser feet in addition.
2. the device for adjusting heigll of presser feet of Sewing machines as claimed in claim 1, it is characterized in that: above-mentioned setting device has the regulating part of the oscillation center displacement that makes above-mentioned swing component.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32742693A JP3485341B2 (en) | 1993-12-24 | 1993-12-24 | Middle presser height adjustment device for sewing machine |
| JP327426/93 | 1993-12-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1114370A true CN1114370A (en) | 1996-01-03 |
| CN1042560C CN1042560C (en) | 1999-03-17 |
Family
ID=18199039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94120481A Expired - Fee Related CN1042560C (en) | 1993-12-24 | 1994-12-23 | Device for adjusting heigll of presser feet of sewing machine |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3485341B2 (en) |
| KR (1) | KR100343605B1 (en) |
| CN (1) | CN1042560C (en) |
| TW (1) | TW258763B (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1766193B (en) * | 2004-10-27 | 2010-11-10 | 兄弟工业株式会社 | Intermittent presser foot up-down drive device and sewing machine |
| CN1766192B (en) * | 2004-10-27 | 2010-12-01 | 兄弟工业株式会社 | Intermittent presser foot up-down drive device and sewing machine |
| CN1970867B (en) * | 2005-11-25 | 2011-12-07 | 重机公司 | Sewing machine |
| CN101063255B (en) * | 2006-04-24 | 2012-04-18 | Juki株式会社 | Sewing machine |
| CN1982524B (en) * | 2005-12-12 | 2012-06-13 | 重机公司 | Center presser mechanism for sewing machine |
| CN101469490B (en) * | 2007-12-28 | 2013-03-06 | Juki株式会社 | Strip cloth presser foot mechanism of strip sewing machine |
| CN101265642B (en) * | 2008-05-05 | 2014-04-30 | 新杰克缝纫机股份有限公司 | Electronic pattern sewing machines presser foot automatic control device |
| CN107354600A (en) * | 2016-05-10 | 2017-11-17 | 天津宝盈电脑机械有限公司 | A kind of Novel sewing head |
| CN108301125A (en) * | 2017-01-11 | 2018-07-20 | 天津宝盈电脑机械有限公司 | A kind of presser feet driving of full-automatic sewing machine and control mechanism |
| CN108950915A (en) * | 2018-08-21 | 2018-12-07 | 陈启聪 | A kind of shank and presser feet driving device applied on computerized emboridering machine |
| CN112195579A (en) * | 2020-09-11 | 2021-01-08 | 浙江镨美科智能刺绣设备有限公司 | Presser foot height self-adaptive adjusting method |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003093773A (en) * | 2001-09-20 | 2003-04-02 | Juki Corp | Buttonhole sewing machine |
| JP4526917B2 (en) * | 2004-10-12 | 2010-08-18 | Ｊｕｋｉ株式会社 | Sewing machine intermediate presser |
| JP2006110237A (en) * | 2004-10-18 | 2006-04-27 | Juki Corp | Sewing machine |
| JP4722510B2 (en) * | 2005-03-07 | 2011-07-13 | Ｊｕｋｉ株式会社 | sewing machine |
| JP4576547B2 (en) * | 2005-05-11 | 2010-11-10 | Ｊｕｋｉ株式会社 | sewing machine |
| JP4920904B2 (en) * | 2005-05-16 | 2012-04-18 | Ｊｕｋｉ株式会社 | sewing machine |
| JP5040212B2 (en) * | 2006-08-10 | 2012-10-03 | ブラザー工業株式会社 | Sewing machine and sewing program |
| CN106319774B (en) * | 2015-06-17 | 2018-11-16 | 启翔股份有限公司 | The interior foot device of sewing machine |
| CN108118457B (en) * | 2016-11-29 | 2023-07-07 | 拓卡奔马机电科技有限公司 | Lift presser foot height adjustment mechanism and buttonholing machine |
| CN110067091B (en) * | 2018-01-22 | 2021-06-29 | 拓卡奔马机电科技有限公司 | Template machine and presser foot assembly thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0440995A (en) * | 1990-06-05 | 1992-02-12 | Brother Ind Ltd | Sewing machine provided with stamp function |
-
1993
- 1993-12-24 JP JP32742693A patent/JP3485341B2/en not_active Expired - Fee Related
-
1994
- 1994-12-21 KR KR1019940035711A patent/KR100343605B1/en not_active IP Right Cessation
- 1994-12-23 TW TW083112109A patent/TW258763B/zh active
- 1994-12-23 CN CN94120481A patent/CN1042560C/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1766193B (en) * | 2004-10-27 | 2010-11-10 | 兄弟工业株式会社 | Intermittent presser foot up-down drive device and sewing machine |
| CN1766192B (en) * | 2004-10-27 | 2010-12-01 | 兄弟工业株式会社 | Intermittent presser foot up-down drive device and sewing machine |
| CN1970867B (en) * | 2005-11-25 | 2011-12-07 | 重机公司 | Sewing machine |
| CN1982524B (en) * | 2005-12-12 | 2012-06-13 | 重机公司 | Center presser mechanism for sewing machine |
| CN101063255B (en) * | 2006-04-24 | 2012-04-18 | Juki株式会社 | Sewing machine |
| CN101469490B (en) * | 2007-12-28 | 2013-03-06 | Juki株式会社 | Strip cloth presser foot mechanism of strip sewing machine |
| CN101265642B (en) * | 2008-05-05 | 2014-04-30 | 新杰克缝纫机股份有限公司 | Electronic pattern sewing machines presser foot automatic control device |
| CN107354600A (en) * | 2016-05-10 | 2017-11-17 | 天津宝盈电脑机械有限公司 | A kind of Novel sewing head |
| CN108301125A (en) * | 2017-01-11 | 2018-07-20 | 天津宝盈电脑机械有限公司 | A kind of presser feet driving of full-automatic sewing machine and control mechanism |
| CN108950915A (en) * | 2018-08-21 | 2018-12-07 | 陈启聪 | A kind of shank and presser feet driving device applied on computerized emboridering machine |
| CN108950915B (en) * | 2018-08-21 | 2023-06-20 | 陈启聪 | Needle bar and presser foot driving device applied to computerized embroidery machine |
| CN112195579A (en) * | 2020-09-11 | 2021-01-08 | 浙江镨美科智能刺绣设备有限公司 | Presser foot height self-adaptive adjusting method |
| CN112195579B (en) * | 2020-09-11 | 2022-05-24 | 浙江镨美科智能刺绣设备有限公司 | Presser foot height self-adaptive adjusting method |
Also Published As
| Publication number | Publication date |
|---|---|
| TW258763B (en) | 1995-10-01 |
| KR950018796A (en) | 1995-07-22 |
| KR100343605B1 (en) | 2002-10-25 |
| JPH07178272A (en) | 1995-07-18 |
| CN1042560C (en) | 1999-03-17 |
| JP3485341B2 (en) | 2004-01-13 |
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