CN106637709A - Middle presser foot mechanism and sewing machine - Google Patents
Middle presser foot mechanism and sewing machine Download PDFInfo
- Publication number
- CN106637709A CN106637709A CN201611092149.2A CN201611092149A CN106637709A CN 106637709 A CN106637709 A CN 106637709A CN 201611092149 A CN201611092149 A CN 201611092149A CN 106637709 A CN106637709 A CN 106637709A
- Authority
- CN
- China
- Prior art keywords
- presser foot
- middle presser
- head shell
- medium pressure
- eccentric wheel
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/06—Presser feet
Abstract
The invention relates to the field of spinning, and discloses a middle presser foot mechanism arranged in a sewing machine and the sewing machine. The middle presser foot mechanism comprises a middle presser foot rod with a middle presser foot, and a limiting part for triggering the middle presser foot mechanism outside. The sewing machine further comprises a machine head shell, an eccentric wheel crank-link mechanism and a controllable push rod device, the eccentric wheel crank-link mechanism is arranged in the machine head shell and driven by a main shaft, and the controllable push rod device is arranged in the machine head shell. When the controllable push rod device stretches, the controllable push rod device abuts against the limiting part and pushes the limiting part, and the middle presser foot rod is lifted by the middle presser foot mechanism. When the controllable push rod device contracts, the limiting parts descends to the limiting position, and the middle presser foot rod descends. The eccentric wheel crank-link mechanism is in linkage connection with the middle presser foot mechanism through a swing shaft. The middle presser foot of the sewing machine is separated from a machine needle and can independently move vertically, the middle presser foot is controlled to move according to the thickness of a sewing material, the middle presser foot effectively compresses the sewing material all the time, and the problem about sewing material thickness changes during sewing is solved well.
Description
Technical field
The present invention relates to field of textiles, more particularly to a kind of middle presser foot device and sewing machine.
Background technology
Sewing machine is to use one or more sewing thread, and one or more stitching is formed on sewing, stitches one or more layers
The machine that material interweaves or unites by a seam.The effect of the middle presser feet of sewing machine is to flatten sewing, is easy to needle tracking to be formed.Due to sewing
When sewing have certain thickness change, and eedle and middle presser feet are always moved up and down together, it may occur that middle presser feet can not
Sewing is effectively compressed, causes occurred the problems such as stitching off-line, midway bouncing pilotage or even stitching cannot be formed in sewing process；Also having can
The tension of pressure can occur causes the problems such as broken string, sewing wrinkle, catch up with material, noise is big.
The content of the invention
The purpose of embodiment of the present invention is the middle presser feet for providing presser feet and eedle breakaway sport during a kind of energy is realized
Mechanism and sewing machine.
To solve above-mentioned technical problem, embodiments of the present invention provide a kind of middle presser foot device, are arranged on sewing machine
In, the sewing machine includes head shell, the eccentric wheel crank connecting link machine for being arranged in the head shell and being driven by main shaft
Structure, wherein, the eccentric wheel toggle is connected by swinging axle with medium pressure pin mechanism；Medium pressure pin machine
Structure is comprising the middle presser bar with middle presser feet, in the locating part of external trigger medium pressure pin mechanism；The sewing machine is also
Comprising the controllable type push rod device being arranged in the head shell；The controllable type push rod device is supported described when stretching
Locating part simultaneously promotes the locating part, and medium pressure pin mechanism raises medium pressure foot lever；The controllable type push rod device is being received
During contracting, the locating part falls to extreme position, and medium pressure foot lever falls.
Embodiments of the present invention additionally provide a kind of sewing machine, comprising head shell, are arranged in the head shell
And the eccentric wheel toggle driven by main shaft, also comprising middle presser foot device as above.
In terms of existing technologies, the middle presser feet of sewing machine departs from embodiment of the present invention with eedle, can independently on
Lower movement, the movement of presser feet in being controlled according to the thickness of sewing makes middle presser feet effectively compress sewing all the time, solves very well
The problem of sewing thickness change during sewing.
In addition, medium pressure pin mechanism also includes swing arm, connection sheet, triangle joint piece, stator, guide shaft fixing unit；
Wherein, one end of the swing arm is fixedly connected with the swinging axle and together swings with the swinging axle, the other end with it is described
One end of connection sheet is hinged, and the other end of the connection sheet is hinged with one end of the triangle joint piece, the triangle joint piece
Middle-end be movably arranged on the locating part, one end of the locating part is hinged with the head shell, the triangle joint
The other end of piece is hinged with the stator, and the stator is hinged with the guide shaft fixing unit, and the guide shaft fixing unit slides
It is connected on the head shell, medium pressure foot lever is moved back and forth with the guide shaft fixing unit in the vertical direction.Locating part
The motion of the parts in can driving in presser foot device.Power resources are provided by controllable type push rod device, is by mechanism one
The action of row, promotes middle presser foot device to move up and down.Presser foot device simple structure in this kind, is easy to production.
In addition, the guide shaft fixing unit has the installation tiger's jaw passed through for medium pressure foot lever, is arranged on and described installs tiger
The fixing threaded hole that the fixing hole and the fixing hole of mouth coordinates, medium pressure pin mechanism is also included through the fixing hole and spiral shell
Line is arranged on the fixing bolt in the fixing threaded hole, for reducing the size of the installation tiger's jaw to clamp medium pressure pin
Bar.Guide shaft fixing unit is able to fix middle presser bar by such mode, and realizes the detachable of middle presser bar
Install.
In addition, the gap between the triangle joint piece and the locating part is more than or equal to 0.05cm, triangle joint is made
There is no friction between piece 11 and locating part 7, play a part of protection element.
In addition, the top of medium pressure foot lever and the mutual stepped in bottom, the diameter on the top is less than the bottom
Diameter, also comprising the spring for being set in the top, the inner ring diameter of the spring is less than the bottom for medium pressure pin mechanism
Diameter and more than the top diameter；The head shell of the top upper end is provided with limited cover, the diameter of the limited cover
More than the inner ring diameter of the spring, for supporting the spring.Therefore spring can be enclosed in outside middle presser bar top, spacing
Lid can adjust the compression degree of spring, and middle presser feet can be made to be in pressed status.
In addition, the limited cover is threadedly coupled with the head shell of the top upper end, the limited cover is along the screw thread
After rotation, vertically move up and down in the head shell.Limited cover is up adjusted, spring pressure lightens, and down adjusts
Then spring pressure becomes big.Thin sewing pressure is more light better, and seam gets up to wrinkle, and thick sewing is somewhat weighed a bit, it is ensured that sewing
Do not stick up.The performance-adjustable of spring force is realized, with the demand under satisfaction more multi-state, middle presser foot device is expanded
The scope of application.
In addition, the eccentric wheel toggle is set in comprising the eccentric wheel, cooperation being fixedly connected with the main shaft
The fine setting connecting rod that crank and the crank outside the eccentric wheel is hinged, the fine setting connecting rod is fixed with the swinging axle
Connection；Wherein, the fine setting connecting rod has tiger's jaw, the fine setting for reducing the tiger's jaw size passed through for the swinging axle
Screw and trimming bolt, the trimming bolt coordinates in the fine setting screw.Eccentric wheel toggle is caused
Main shaft defines a linkage with swinging axle.In addition, fine setting connecting rod also achieves eccentric wheel toggle and swinging axle
Removable installation, be easy to production assembling.
In addition, the fine setting connecting rod has chute, the crank is provided with the regulation screw passed through for regulating bolt, described
Regulating bolt is consolidated on the crank and the fine setting connecting rod by regulating nut through the regulation screw and the chute
Fixed connection.The chute of fine setting connecting rod allow client can according to the size of required amplitude of fluctuation come regulating bolt range of movement, with
Meet the demand under more multi-state, expand the scope of application of middle presser foot device.
Description of the drawings
Fig. 1 is the cross-sectional schematic of head shell in first embodiment；
Fig. 2 is the dimensional structure diagram 1 of middle presser foot device in first embodiment；
Fig. 3 is the dimensional structure diagram 2 of middle presser foot device in first embodiment.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with each reality of the accompanying drawing to the present invention
The mode of applying is explained in detail.However, it will be understood by those skilled in the art that in each embodiment of the invention,
In order that reader more fully understands the application and proposes many ins and outs.But, even if without these ins and outs and base
Many variations and modification in following embodiment, it is also possible to realize the application technical scheme required for protection.
The first embodiment of the present invention is related to a kind of middle presser foot device, in being arranged on sewing machine, such as the institute of accompanying drawing 1,2,3
Show, sewing machine includes head shell 29, is arranged on the eccentric wheel toggle 2 for being driven in head shell 29 and by main shaft 1,
Wherein, head shell 29 has hollow inner chamber, and class rectangle, surface is smooth without corner angle, and crank mechanism is arranged on head shell 29
Inside disembark seat side farther out, eccentric wheel toggle is connected by swinging axle 3 with middle presser foot device 4；Middle presser feet
Mechanism 4 is comprising the middle presser bar 6 with middle presser feet 5, for the locating part 7 of the presser foot device 4 in external trigger；Sewing machine is also wrapped
Containing the controllable type push rod device 8 being arranged in head shell 29；Locating part 7 has one and provides for controllable type push rod device 8
The stress surface in force, when controllable type push rod device 8 is when stretching, can support locating part 7 and promote locating part 7, middle presser foot device 4
Raise middle presser bar 6；When shrinking, locating part 7 falls to extreme position controllable type push rod device 8, and middle presser bar 6 falls.Tool
For body, the controllable type push rod device in present embodiment is air-leg, the side of air-leg and the stress surface of locating part 7
Contact, realizes transmission.Certainly, it should also be appreciated by one skilled in the art that the air-leg could alternatively be electric pushrod etc. its
His push rod device.
In particular, the middle presser foot device 4 in present embodiment also includes swing arm 9, connection sheet 10, triangle joint piece
11st, stator 12, guide shaft fixing unit 13；Wherein, one end of swing arm 9 is fixedly connected with swinging axle 3 and together puts with swinging axle 3
Dynamic, the other end is hinged with one end of connection sheet 10, and the other end and one end of triangle joint piece 11 of connection sheet are hinged, triangle joint
The middle-end of piece 11 is movably arranged on locating part 7, and one end and the head shell of locating part 7 are hinged, triangle joint piece 11 it is another
End is hinged with stator 12, and stator 12 is hinged with guide shaft fixing unit 13, and guide shaft fixing unit 13 is slidably connected on head shell,
Middle presser bar 6 is moved back and forth with the in the vertical direction of guide shaft fixing unit 13.It is known that locating part 7 can drive in presser feet machine
The motion of the parts in structure 4.Gap between triangle joint piece 11 and locating part 7 is more than or equal to 0.05cm, connects triangle
There is no friction between contact pin 11 and locating part 7, play a part of protection element.
In sum it is seen that, controllable type push rod device 8 provides power resources, by triggering locating part 7 driving
Presser bar 6 in guide shaft fixing unit 13, guide shaft fixing unit 13 and drive, presser foot device 4 moves up and down in finally realizing.Work as needs
When changing the sewing of different-thickness, controlling cylinder tolerance makes the thrust variation of air-leg, makes to have between middle presser bar 6 and sewing
One suitable distance, realization effectively compresses sewing, reduces the possibility gone wrong during sewing.
, wherein it is desired to illustrate, guide shaft fixing unit 13 has the installation tiger's jaw 14 that presser bar 6 is passed through in confession, is arranged on
It is described install tiger's jaw 14 fixing hole 15 and the fixing hole 15 coordinate fixing threaded hole 16, middle presser foot device also include through
Fixing hole 15 and the fixing bolt being threadably mounted in fixing threaded hole 16, for reducing the size for installing tiger's jaw 14 to press in clamping
Foot lever 6.Guide shaft fixing unit 13 is fixed middle presser bar 6 by such mode, realizes the detachable peace of middle presser bar
Dress.
It should be noted that the top 30 of middle presser bar 6 and the mutual stepped in bottom 31, the diameter on top 30 is less than bottom
31 diameter, middle presser foot device 4 also comprising being set in the spring 17 on top, the inner ring diameter of spring less than bottom 31 diameter simultaneously
More than the diameter on top 30；The head shell 29 of the upper end of top 30 is provided with limited cover 18, limited cover 18 with diameter greater than spring 17
Inner ring diameter, for supporting spring 17.Therefore spring 17 can be enclosed in outside the top 30 of middle presser bar 6, and limited cover can be adjusted
The compression degree of whole spring, can make middle presser feet be in pressed status.Limited cover 18 and the spiral shell of head shell 29 of the upper end of top 30
Line connects, and after limited cover 18 threadingly rotates, vertically moves up and down in head shell 29.Limited cover 18 is up adjusted,
The pressure of spring 17 lightens, and then the pressure of spring 17 becomes big down to adjust limited cover 18.Thin sewing pressure is more light better, and seam gets up not
Can wrinkle, thick sewing is somewhat weighed a bit, it is ensured that sewing does not stick up.The performance-adjustable of spring force is realized, to meet more
Demand under multi-state, expands the scope of application of middle presser foot device.
Also, it should be noted that eccentric wheel toggle 2 includes the eccentric wheel 19, cooperation being fixedly connected with main shaft 1
The fine setting connecting rod 21 that the crank 20 and crank 20 being set in outside eccentric wheel 19 is hinged, fine setting connecting rod 21 is fixed with swinging axle 3
Connection；Wherein, finely tune connecting rod 21 and there is tiger's jaw 22, the fine setting screw for reducing the size of tiger's jaw 22 passed through for swinging axle 3
23 and trimming bolt 24, trimming bolt 24 coordinates and is arranged in fine setting screw 23.Eccentric wheel toggle 2 causes main shaft
1 defines a linkage with swinging axle 3.Fine setting connecting rod 21 has chute 25, and crank 20 is provided with what is passed through for regulating bolt 26
Screw 27 is adjusted, regulating bolt 26 is connected on crank 20 and fine setting by regulating nut 28 through regulation screw 27 and chute 25
Extension bar 21 is fixedly connected.The permission client of chute 25 of fine setting connecting rod 21 can be according to the size of required amplitude of fluctuation come regulating bolt
26 range of movement, with the demand under satisfaction more multi-state, expand the scope of application of middle presser foot device.
Second embodiment of the present invention is related to a kind of sewing machine, comprising head shell, as described in the first embodiment
Eccentric wheel toggle and middle presser foot device.This kind of sewing machine can be controlled according to the thickness of sewing in presser feet shifting
It is dynamic, make middle presser feet effectively compress sewing all the time, sewing thickness change during sewing is solved the problems, such as very well.
It will be understood by those skilled in the art that the respective embodiments described above are to realize the specific embodiment of the present invention,
And in actual applications, can in the form and details to it, various changes can be made, without departing from the spirit and scope of the present invention.
Claims (9)
1. a kind of middle presser foot device, in being arranged on sewing machine, it is characterised in that the sewing machine comprising head shell, be arranged on
The eccentric wheel toggle driven in the head shell and by main shaft, wherein, the eccentric wheel toggle leads to
Cross swinging axle to be connected with medium pressure pin mechanism；
Medium pressure pin mechanism is comprising the middle presser bar with middle presser feet, in the spacing of external trigger medium pressure pin mechanism
Part；
The sewing machine is also comprising the controllable type push rod device being arranged in the head shell；
The controllable type push rod device supports the locating part and promotes the locating part when stretching, medium pressure pin mechanism
Raise medium pressure foot lever；
When shrinking, the locating part falls to extreme position the controllable type push rod device, and medium pressure foot lever falls.
2. middle presser foot device according to claim 1, it is characterised in that medium pressure pin mechanism also comprising swing arm, even
Contact pin, triangle joint piece, stator, guide shaft fixing unit；
Wherein, one end of the swing arm is fixedly connected with the swinging axle and together swings with the swinging axle, the other end with
One end of the connection sheet is hinged, and the other end of the connection sheet is hinged with one end of the triangle joint piece, and the triangle connects
The middle-end of contact pin is movably arranged on the locating part, and one end of the locating part is hinged with the head shell, the triangle
The other end of connection sheet is hinged with the stator, and the stator is hinged with the guide shaft fixing unit, the guide shaft fixing unit
It is slidably connected on the head shell, medium pressure foot lever is moved back and forth with the guide shaft fixing unit in the vertical direction.
3. middle presser foot device according to claim 2, it is characterised in that the guide shaft fixing unit has and supplies medium pressure pin
Bar pass through install tiger's jaw, be arranged on it is described installation tiger's jaw fixing hole and the fixing hole coordinate fixing threaded hole, it is described in
The fixing bolt that presser foot device is also included through the fixing hole and is threadably mounted in the fixing threaded hole, it is described for reducing
The size of tiger's jaw is installed to clamp medium pressure foot lever.
4. middle presser foot device according to claim 2, it is characterised in that between the triangle joint piece and the locating part
Gap be more than or equal to 0.05cm.
5. middle presser foot device according to claim 2, it is characterised in that the top of medium pressure foot lever is mutually platform with bottom
Scalariform, the diameter on the top is less than the diameter of the bottom, and medium pressure pin mechanism is also comprising the bullet for being set in the top
Spring, the diameter of the inner ring diameter less than the bottom of the spring and the diameter more than the top；
The head shell of the top upper end is provided with limited cover, the inner ring diameter with diameter greater than the spring of the limited cover,
For supporting the spring.
6. middle presser foot device according to claim 5, it is characterised in that the head of the limited cover and the top upper end
Housing is threadedly coupled, and the limited cover is vertically moved up and down after the screw thread rotation in the head shell.
7. middle presser foot device according to claim 2, it is characterised in that the eccentric wheel toggle is included and institute
State the crank that the eccentric wheel, cooperation that main shaft is fixedly connected be set in outside the eccentric wheel and the fine setting connection that the crank is hinged
Bar, the fine setting connecting rod is fixedly connected with the swinging axle；
Wherein, the fine setting connecting rod has tiger's jaw, the fine setting for reducing the tiger's jaw size passed through for the swinging axle
Screw and trimming bolt, the trimming bolt coordinates in the fine setting screw.
8. middle presser foot device according to claim 7, it is characterised in that the fine setting connecting rod has chute, the song
Handle is provided with the regulation screw passed through for regulating bolt, and the regulating bolt passes through through the regulation screw and the chute
Regulating nut is fixedly connected the crank with the fine setting connecting rod.
9. a kind of sewing machine, comprising head shell, is arranged in the head shell and is connected by the eccentric wheel crank that main shaft drives
Linkage, it is characterised in that also comprising presser foot device in as described in any one in claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611092149.2A CN106637709B (en) | 2016-12-01 | 2016-12-01 | A kind of middle presser foot device and sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611092149.2A CN106637709B (en) | 2016-12-01 | 2016-12-01 | A kind of middle presser foot device and sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106637709A true CN106637709A (en) | 2017-05-10 |
| CN106637709B CN106637709B (en) | 2019-05-31 |
Family
ID=58813762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611092149.2A Expired - Fee Related CN106637709B (en) | 2016-12-01 | 2016-12-01 | A kind of middle presser foot device and sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106637709B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108130656A (en) * | 2018-01-23 | 2018-06-08 | 诸暨锦和缝制机械有限公司 | A kind of automatic needle-foot-lifting device of sewing machine |
| CN109440308A (en) * | 2018-10-30 | 2019-03-08 | 杰克缝纫机股份有限公司 | The self-checking device and its control method of presser feet alternately amount on a kind of sewing machine |
| CN110485067A (en) * | 2019-09-06 | 2019-11-22 | 杰克缝纫机股份有限公司 | A kind of control method of lifting pressre of sewing machine power-assisted lifting |
| CN113388974A (en) * | 2021-07-16 | 2021-09-14 | 汝州玛雅机电科技有限公司 | Embroidery machine presser foot control system |
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| CN101922089A (en) * | 2009-06-17 | 2010-12-22 | 上海贵衣缝纫设备有限公司 | Middle presser foot lifting structure in pattern stitching machine sewing |
| CN101929041A (en) * | 2009-06-25 | 2010-12-29 | 中国标准缝纫机公司上海惠工缝纫机三厂 | Presser foot height adjusting mechanism for sewing machine |
| CN102182017A (en) * | 2011-05-04 | 2011-09-14 | 张章生 | Middle presser foot mechanism of sewing machine |
| CN102953241A (en) * | 2011-08-18 | 2013-03-06 | 上海贵衣缝纫设备有限公司 | Intermediate presser foot lifting structure of pattern-sewing machine |
| CN203890637U (en) * | 2014-04-01 | 2014-10-22 | 黄金榜 | Eccentric wheel connecting rod structure of thick material lock-stitch sewing machine |
| CN204803527U (en) * | 2015-06-17 | 2015-11-25 | 启翔股份有限公司 | Sewing machine's interior presser foot device |
| CN204803528U (en) * | 2015-07-10 | 2015-11-25 | 启翔股份有限公司 | Sewing machine's interior presser foot mechanism |
| CN105401344A (en) * | 2015-12-24 | 2016-03-16 | 拓卡奔马机电科技有限公司 | Modular middle presser foot device and sewing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101922089A (en) * | 2009-06-17 | 2010-12-22 | 上海贵衣缝纫设备有限公司 | Middle presser foot lifting structure in pattern stitching machine sewing |
| CN101929041A (en) * | 2009-06-25 | 2010-12-29 | 中国标准缝纫机公司上海惠工缝纫机三厂 | Presser foot height adjusting mechanism for sewing machine |
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| CN102953241A (en) * | 2011-08-18 | 2013-03-06 | 上海贵衣缝纫设备有限公司 | Intermediate presser foot lifting structure of pattern-sewing machine |
| CN203890637U (en) * | 2014-04-01 | 2014-10-22 | 黄金榜 | Eccentric wheel connecting rod structure of thick material lock-stitch sewing machine |
| CN204803527U (en) * | 2015-06-17 | 2015-11-25 | 启翔股份有限公司 | Sewing machine's interior presser foot device |
| CN204803528U (en) * | 2015-07-10 | 2015-11-25 | 启翔股份有限公司 | Sewing machine's interior presser foot mechanism |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108130656A (en) * | 2018-01-23 | 2018-06-08 | 诸暨锦和缝制机械有限公司 | A kind of automatic needle-foot-lifting device of sewing machine |
| CN108130656B (en) * | 2018-01-23 | 2020-09-18 | 浙江锦上智控科技有限公司 | Presser foot device is lifted in sewing machine's automation |
| CN109440308A (en) * | 2018-10-30 | 2019-03-08 | 杰克缝纫机股份有限公司 | The self-checking device and its control method of presser feet alternately amount on a kind of sewing machine |
| CN110485067A (en) * | 2019-09-06 | 2019-11-22 | 杰克缝纫机股份有限公司 | A kind of control method of lifting pressre of sewing machine power-assisted lifting |
| CN113388974A (en) * | 2021-07-16 | 2021-09-14 | 汝州玛雅机电科技有限公司 | Embroidery machine presser foot control system |
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|---|---|
| CN106637709B (en) | 2019-05-31 |
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