CN101392437A - Intermediate presser foot device of sewing machine - Google Patents
Intermediate presser foot device of sewing machine Download PDFInfo
- Publication number
- CN101392437A CN101392437A CNA2008100027649A CN200810002764A CN101392437A CN 101392437 A CN101392437 A CN 101392437A CN A2008100027649 A CNA2008100027649 A CN A2008100027649A CN 200810002764 A CN200810002764 A CN 200810002764A CN 101392437 A CN101392437 A CN 101392437A
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- presser foot
- middle presser
- mentioned
- press pin
- middle press
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Abstract
The invention provides a middle press pin device of a sewing machine, which can prevents pressure change of the middle press pin pressing on cloth in the condition that when the middle press pin of the sewing machine presses on a step of the sewed article, for example, in a condition that the thickness of cloth to be sewn changes. The middle press pin device comprises a middle press pin (19), an up-down moving unit (M1) of the middle press pin and an adjustment unit (M2) for adjusting the moving down position of the middle press pin, wherein the middle press pin moving down position adjustment unit is composed of a middle press pin shaft (28) which is rotatably supported on an arm of the sewing machine; a middle press pin lifting lever (22) which is fixed on an end portion of the middle press pin shaft (28); a middle press pin lever (23) which is positioned adjacent to the middle pressure pin lifting lever (22) and rotatably jogged with the middle press pin shaft (28); and a spring bracket (24) which is rotatably disposed on the middle press pin lifting lever (22), wherein a spring (27) is disposed between the spring bracket (24) and the middle press pin lever (23).
Description
Technical field
The present invention relates to a kind of middle presser foot device of Sewing machines.Be particularly related to and a kind of pretightning force to middle presser feet changed, thereby can not make the Sewing machines middle presser foot device that the pressure of making thing is changed.
Background technology
In such Sewing machiness that do not use the feeding tooth and cloth is also made simultaneously along the carrying of XY direction such as embroidery machine, in order to prevent that cloth is by rising with suture needle with the friction of suture needle and swinging, the middle presser foot device is set, and it is pushed downwards around suture needle portion of running through with cloth when suture needle is risen.This device when suture needle is risen from cloth, utilizes middle presser foot that cloth is pushed downwards usually, after suture needle is risen from cloth fully, middle presser foot is risen with suture needle.
Existing example as above-mentioned middle presser foot device has proposed following apparatus, its by with the oscillation center of middle presser foot at the general horizontal direction top offset, can be corresponding and the down position (for example, with reference to patent documentation 1) of adjusting middle presser foot with fabric thickness.
In addition, existing example as other has proposed as lower device, it moves to the direction that elastic force reduces by making the end that middle presser foot is remained on the preload unit on the fixed position, reduces power (for example, with reference to patent documentation 2) required when middle presser foot is kept out of the way.
Patent documentation 1: the spy opens flat 7-No. 178272 communiques (paragraph 0010, Fig. 1)
Patent documentation 2: the spy opens 2007-No. 159710 communiques (paragraph 0005, Fig. 1)
Summary of the invention
But above-mentioned patent documentation 1 disclosed middle presser foot device has following problems, when making the down position variation of middle presser foot in the stitching sewing machine action, the pretightning force to middle presser feet is changed, and the pressure of making thing, for example cloth is changed.
In addition, above-mentioned patent documentation 2 disclosed middle presser foot devices can reduce the power when middle presser foot is kept out of the way, but have mechanism's very complicated problems that becomes.
The invention provides a kind of middle presser foot device of Sewing machines, it solves the problem of above-mentioned existing apparatus by dispose preload unit in swing mechanism.
The middle presser foot device of Sewing machines involved in the present invention has: middle presser foot, and it utilizes the pretightning force of preload unit will make thing and pushes to needle plate when making; The middle presser foot reciprocating mechanism, it moves up and down above-mentioned middle presser foot and the suture needle that moves up and down by main axis rotation ordinatedly; And middle presser foot down position governor motion, it makes the down position of above-mentioned middle presser foot corresponding with fabric thickness and mobile along the vertical direction, adjust the middle presser foot down position, in above-mentioned middle presser foot device, above-mentioned preload unit and above-mentioned middle presser foot down position governor motion constitute integratedly.
The effect of invention
According to the middle presser foot device of Sewing machines involved in the present invention, though middle presser foot by the situation on the step that is pressed in cloth etc. under, for example fabric thickness changes under such situation in making, and middle presser foot is changed the pressure of cloth.And can prevent the middle presser foot damage.
Description of drawings
Fig. 1 is the oblique view of the middle presser foot device of Sewing machines that embodiments of the present invention 1 are described.
Fig. 2 is the front view of the middle presser foot device of Sewing machines that embodiments of the present invention 1 are described.
Fig. 3 is the front view of the middle presser foot device of Sewing machines that embodiments of the present invention 2 are described.
The specific embodiment
Below, with reference to the preferred forms of the middle presser foot of description of drawings Sewing machines involved in the present invention.In addition, the present invention is not limited to following embodiment.
Fig. 1 is the oblique view of the middle presser foot device of the related Sewing machines of embodiments of the present invention 1, and Fig. 2 is a front view.At first use this Fig. 1, Fig. 2 to illustrate that the integral body of the middle presser foot device of Sewing machines constitutes.
(integral body of middle presser foot constitutes)
As shown in Figure 1 and Figure 2, the middle presser foot device 1 of the Sewing machines of present embodiment has: middle presser foot 19, and it will make thing when making, for example cloth is pushed to needle plate; Middle presser foot reciprocating mechanism M1, it moves up and down this middle presser foot 19 and the action of the suture needle that moves up and down by main axis rotation ordinatedly; And middle presser foot down position governor motion M2, it regulates the down position of middle presser foot.
Below, the structure of middle presser foot reciprocating mechanism M1 is described.
(structure of middle presser foot reciprocating mechanism)
Middle presser foot reciprocating mechanism M1 is arranged on the axle 2, and axle 2 drives the needle bar that is provided with suture needle at front end along the vertical direction on this.Fixing eccentric cam 3 on last axle 2, this eccentric cam 3 be connected connecting rod 4 bindings.Connect connecting rod 4 and link with swinging axle abut 5, swinging axle abut 5 links with an end of swinging axle 6.The grooved cam 5a that formation is regulated the amount of movement of the above-below direction D1 of middle presser feet 19 in swinging axle abut 5.This grooved cam 5a is the slotted hole of arcuation, an end that connects connecting rod 4 on the desired locations of this grooved cam 5a by adjusting nut 7 and 8 supports of ladder bolt.In addition, this axle Support Position that connects connecting rod 4 can be regulated along grooved cam 5a.
Fixing swing wrist 9 on the other end of swinging axle 6.Swing wrist 9 links by ladder bolt 11 with an end of connecting rod 10, and the other end of connecting rod 10 links with the top of the pendular body 12 that forms the font of falling L connecting rod.The top of the left part of this pendular body 12 and connecting rod 13 links, and the oscillation center C1 of central portion is connected with the right part of connecting rod 14 by ladder bolt 20.The other end of connecting rod 14 links by ladder bolt 15 and sewing machine arm (not shown).The other end of connecting rod 13 links by ladder bolt 17 and middle presser foot rod abut 16.The middle presser foot rod 18 that extend the side of keeping down in middle presser foot rod abut 16.In the bottom of middle presser foot rod 18 middle presser foot 19 is installed, it is pushed cloth when making to needle plate.In addition, the oscillation center C1 of pendular body 12 is remained on the fixed position by middle presser foot down position governor motion M2 described later.
By said structure, if go up axle 2 rotations, connection connecting rod 4 oscillating motions that then are connected with eccentric cam 3.The oscillating motion of this connection connecting rod 4 is passed to swinging axle abut 5, and swing wrist 9 is also swung.This motion is passed to connecting rod 10, and pendular body 12 is the center swing with oscillation center C1, and connecting rod 13 moves along the vertical direction.By this connecting rod 13 moving along the vertical direction, the excellent abut 16 of the middle presser foot that is connected with connecting rod 13, middle presser foot rod 18, middle presser foot 19 are moved along the D1 direction.
Below, the structure of middle presser foot down position governor motion M2 is described.
(structure of middle presser foot down position governor motion)
Middle presser foot down position governor motion M2 makes the oscillation center C1 of pendular body 12 cooperate with fabric thickness and moves along the vertical direction, thereby adjusts the middle presser foot down position.Middle presser foot axle 28 is supported on the sewing machine arm (not shown) rotationally.Be fixed with middle presser foot lift lever 22 on the end of this middle presser foot axle 28, adjacent therewith, middle presser foot lever 23 is entrenched on the middle presser foot axle 28 rotationally.On middle presser foot lift lever 22, by ladder bolt 25 spring(-supported) mount 24 is set rotationally, be configured to use adjusting bolt 26 to regulate its angles.In addition, the front end of spring(-supported) mount 24 and middle presser foot lever 23 be provided with middle presser foot 19 preload unit, be spring 27.By these spring 27 clamping slide blocks 21, use the pretightning force of regulating bolt 26 regulating springs 27.Thus, middle presser foot down position governor motion M2 and spring 27 constitute integratedly.
Adopt pulse motor as motor 30, it can freely rotate along both forward and reverse directions, simultaneously can be by not shown control part control amount of spin and driving timing.By using motor 30 angles of control middle presser foot lift levers 22 arbitrarily, can make slide block 21, be that the pivot C1 of pendular body 12 freely moves up and down, thereby adjust the middle presser foot down position.
The middle presser foot device of the Sewing machines that embodiment 1 is related, by as above-mentioned formation, when middle presser foot 19 moves up and down when common making, utilize the elastic force of spring 27 to keep the state of clamping slide block 21.Because the installation length of spring 27 is fixed, not with the middle presser foot down position, be that the change in location of slide block 21 changes, thus can not change to the pretightning force of middle presser feet 19, thus constant to the pressure of cloth.In addition, can't drop to the such obstacle of predetermined lower dead point position middle presser foot 19 occurring, for example down by the situation on the step that is pressed in cloth etc. etc., by the elastic force of slide block 21 antagonistic springs 27 along with the rotation of connecting rod 14 from middle pressure foot lifting lever 22 upward away from, middle presser foot 19 is made a concession upward.Thus, prevent middle presser foot 19 damages.
In addition, owing to when middle presser foot is kept out of the way, also carry out and the identical action of change down position, so do not need to be used for the special entity that middle presser foot is kept out of the way.This moment is because the installation length of spring 27 is constant, so also do not need to apply the power of antagonistic spring 27.
As implied above, the middle presser foot device of the Sewing machines that embodiment 1 is related, even middle presser foot 19 by the situation on the step that is pressed in cloth etc. under, for example in making, under the such situation of the varied in thickness of cloth, the pressure of 19 pairs of clothes of middle presser foot is changed.And can prevent middle presser foot 19 damages.
Embodiment 2
Below, use Fig. 3 that embodiment 2 is described.
As shown in Figure 3, mobile also can the replacing with of the oscillation center C1 of pendular body 12 shown in Figure 1 utilizes rack-pinion to carry out moving of above-below direction, and is not to utilize wrist to be rotated motion.In this embodiment 2, slide block 21 moves base station 32 and 33 clampings of pendular body presser feet by pendular body.Pendular body presser feet 33 can 34 move up and down along being fixed on the axle that pendular body moves on the base station 32, utilizes the spring 35 that is set in axle 34 peripheries that slide block 21 is moved base station 32 to pendular body and pushes.
Move at pendular body and to be fixed with tooth bar 36 on the base station 32, it engages with gear 37.Gear 37 can be controlled rotation amount and driving timing by pulse motor, and oscillation center C1 is moved along the vertical direction.In addition, other structures are identical with embodiment 1, omit explanation.
By as above-mentioned formation, at the middle presser foot device of the related Sewing machines of embodiment 2, also can realize the identical effect of middle presser foot device with the related Sewing machines of embodiment 1.
Industrial applicibility
The intermediate presser foot device of sewing machine involved in the present invention can be used in sewing position Different the making on the sewing machine that thing makes of thickness.
Claims (3)
1. the middle presser foot device of a Sewing machines, it has: middle presser foot, it utilizes the pretightning force of preload unit will make thing and pushes to needle plate when making; The middle presser foot reciprocating mechanism, it moves up and down above-mentioned middle presser foot and the suture needle that moves up and down by main axis rotation ordinatedly; And middle presser foot down position governor motion, it makes the down position of above-mentioned middle presser foot corresponding with fabric thickness and mobile along the vertical direction, adjusts the middle presser foot down position,
It is characterized in that,
Above-mentioned preload unit and above-mentioned middle presser foot down position governor motion constitute integratedly.
2. the middle presser foot device of Sewing machines according to claim 1 is characterized in that,
Above-mentioned middle presser foot down position governor motion has: the middle presser foot axle, and it is supported on the sewing machine arm rotationally; The middle presser foot lift lever, it is fixed on the end of above-mentioned middle presser foot axle; Middle presser foot lever, itself and above-mentioned middle presser foot lift lever are adjacent to configuration, and be chimeric with above-mentioned middle presser foot axle rotationally; And spring(-supported) mount, it is arranged on the above-mentioned middle presser foot lift lever rotationally,
Above-mentioned preload unit is configured between above-mentioned spring(-supported) mount and the above-mentioned middle presser foot lever.
3. the middle presser foot device of Sewing machines according to claim 2 is characterized in that,
On above-mentioned middle presser foot lift lever, the adjustment bolt is set, adjusts the rotational angle of above-mentioned spring(-supported) mount thus.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007-245393 | 2007-09-21 | ||
| JP2007245393 | 2007-09-21 | ||
| JP2007245393A JP4375467B2 (en) | 2007-09-21 | 2007-09-21 | Sewing machine intermediate presser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101392437A true CN101392437A (en) | 2009-03-25 |
| CN101392437B CN101392437B (en) | 2012-07-18 |
Family
ID=40492940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100027649A Active CN101392437B (en) | 2007-09-21 | 2008-01-21 | Intermediate presser foot device of sewing machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4375467B2 (en) |
| CN (1) | CN101392437B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260967A (en) * | 2010-05-28 | 2011-11-30 | 爱信精机株式会社 | Sewing machine |
| CN106757826A (en) * | 2016-12-22 | 2017-05-31 | 浙江中捷缝纫科技有限公司 | A kind of hold-down gear of sewing-machine foot |
| CN109023738A (en) * | 2018-10-30 | 2018-12-18 | 杰克缝纫机股份有限公司 | For adjusting the device and its control method of presser feet alternately amount on a kind of sewing machine |
| CN109576913A (en) * | 2017-09-29 | 2019-04-05 | Juki株式会社 | Middle foot device and sewing machine with foot device in this |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972300A (en) * | 2019-04-04 | 2019-07-05 | 黄丰富 | A kind of computer embroidery machine is exempted from by presser feet |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3603506C1 (en) * | 1986-02-05 | 1987-07-30 | Union Special Gmbh | Presser foot device |
| SE509654C2 (en) * | 1995-03-17 | 1999-02-22 | Viking Sewing Machines Ab | Device in a sewing machine |
| CN1177656A (en) * | 1996-09-26 | 1998-04-01 | 胜家公司 | Presser device for sewing machine |
-
2007
- 2007-09-21 JP JP2007245393A patent/JP4375467B2/en active Active
-
2008
- 2008-01-21 CN CN2008100027649A patent/CN101392437B/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260967A (en) * | 2010-05-28 | 2011-11-30 | 爱信精机株式会社 | Sewing machine |
| CN106757826A (en) * | 2016-12-22 | 2017-05-31 | 浙江中捷缝纫科技有限公司 | A kind of hold-down gear of sewing-machine foot |
| CN106757826B (en) * | 2016-12-22 | 2022-09-30 | 浙江中捷缝纫科技有限公司 | Pressing device of sewing machine presser foot |
| CN109576913A (en) * | 2017-09-29 | 2019-04-05 | Juki株式会社 | Middle foot device and sewing machine with foot device in this |
| CN109023738A (en) * | 2018-10-30 | 2018-12-18 | 杰克缝纫机股份有限公司 | For adjusting the device and its control method of presser feet alternately amount on a kind of sewing machine |
| CN109023738B (en) * | 2018-10-30 | 2021-08-06 | 杰克缝纫机股份有限公司 | Device for adjusting presser foot alternating quantity on sewing machine and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101392437B (en) | 2012-07-18 |
| JP2009072428A (en) | 2009-04-09 |
| JP4375467B2 (en) | 2009-12-02 |
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Effective date of registration: 20220921 Address after: Tokyo Patentee after: JUKI Technology Solutions Co.,Ltd. Address before: Tokyo Patentee before: MITSUBISHI ELECTRIC Corp. |
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