CN2506669Y - Movement mechainsm for sewing machine - Google Patents
Movement mechainsm for sewing machine Download PDFInfo
- Publication number
- CN2506669Y CN2506669Y CN01266890U CN01266890U CN2506669Y CN 2506669 Y CN2506669 Y CN 2506669Y CN 01266890 U CN01266890 U CN 01266890U CN 01266890 U CN01266890 U CN 01266890U CN 2506669 Y CN2506669 Y CN 2506669Y
- Authority
- CN
- China
- Prior art keywords
- thread take
- tension lever
- crank
- connecting portion
- counterweight
- 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.)
- Expired - Fee Related
Links
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B49/00—Take-up devices, e.g. levers, for the needle thread
- D05B49/04—Take-up devices, e.g. levers, for the needle thread rotary
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B3/00—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing
- D05B3/02—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing with mechanisms for needle-bar movement
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B55/00—Needle holders; Needle bars
- D05B55/14—Needle-bar drives
Abstract
A sewing machine transmission mechanism can prevent a needle bar mechanism from contacting with a thread-taking-up mechanism when increasing the up and down moving quantity or using a bearing in a rotation part. A junction 5 R a on the side of a needle bar crank rod 5 R close to a balance weight and a junction 9 R b on the side of a thread-taking-up crank 9 R close to the sewing machine frame are positioned deviating from the direction of the axial line of a rotation axis 2, so every connection part does not contact with each other and can move normally, which realizes the high speed of the sewing machine and a shell-shaped needle roller bearing which adopts the solid lubricating grease can maintain the lubricating effect for a long time.
Description
Technical field
The utility model relates to the motion of Sewing machines, and in this motion, counterweight is by the rotating shaft of Sewing machines, for example goes up the rotation of axle and rotates, and needle bar mechanism and thread take-up tension lever mechanism are driven by counterweight.
Background technology
Below, with reference to Fig. 4, Fig. 5 Sewing machines motion of the prior art is described.
Among Fig. 5, left to be sewing machine arm front end, be facial direction, right is to dispose the free wheel direction of flywheel.
In sewing machine arm 1,, can be rotated to support on the sewing machine stand 1a in the sewing machine arm 1 along the rotating shaft 2 that arm 1 length direction extends.The motor of sewing machine that rotating shaft 2 is schemed not show drives rotation, and simultaneously, counterweight 3 is fixed on facial direction end, and motor of sewing machine is with 3 rotations of rotating shaft 2 driven equilibriums hammer.
On counterweight 3, form the eccentric orfice 3a eccentric with respect to pivot (axle center of rotating shaft 2).Crank axle 4 forms crank shape, and it is parallel to 2 axial region 4a, 4b of rotating shaft 2, and is outstanding towards free wheel direction and facial direction respectively.Towards the front end of the outstanding axial region 4a of free wheel direction, chimeric being fixed in the above-mentioned eccentric orfice 3a.
The axial region 4b of facial direction side is propping up the rotatable earth's axis in the upper end of needle bar crank bar 5.At this moment, axial region 4b is apart from the offset of counterweight 3 pivots, greater than the offset of axial region 4a apart from counterweight 3 pivots.The rotatable earth's axis of axial region 6a is being propped up in the lower end of needle bar crank bar 5, this axial region 6a near the central authorities of shank 6 towards free wheel direction and be parallel to rotating shaft 2 ground and give prominence to.The shank metal (upper that figure does not show is fixed on the arm 1, but each above-below direction up and down of shank 6 is bearing on this bearing slidably.Fixing suture needle 7 in the lower end of shank 6, this suture needle 7 and the syringe co-operating that figure does not show form and make stitch.
The front end of thread take-up tension lever 8 has keeps supplying the drawing lines 8a that line passes, and the cardinal extremity of this thread take-up tension lever 8 can be rotated to support on the above-mentioned axial region 4a of crank axle 4.The cardinal extremity of thread take-up tension lever crank 9, the thread take-up tension lever bolster 10 by being parallel to rotating shaft 2 is bearing on the sewing machine stand 1a rotatably.The front end of thread take-up tension lever crank 9 towards the outstanding axial region 9a of free wheel direction, rotatably is connected the pars intermedia of thread take-up tension lever 8.
The following describes the work of above-mentioned motion.
When rotating shaft 2 clockwise direction when rotation in Fig. 4, counterweight 3 fixed thereon rotates similarly.Because the pars intermedia of thread take-up tension lever 8 is connected on the thread take-up tension lever crank 9, so, when thread take-up tension lever crank 9 be that the center is turning in the scope when mobile with thread take-up tension lever bolster 10, the action of thread take-up tension lever 8 be limited, and meanwhile with counterweight 3 interlocks.That is, when the cardinal extremity of thread take-up tension lever 8, when rotating on the rotary motion trace with respect to the axial region 4a of counterweight 3 pivot off-centre, the drawing lines 8a of thread take-up tension lever 8 front ends swings up and down motion.
In addition, when axial region 4a by near the thread take-up tension lever bolster 10 time, the movement velocity of the drawing lines 8a of thread take-up tension lever is the fastest, still, when rotating shaft 2 clockwise directions rotates, the time that becomes prestissimo was when being equivalent to drawing lines 8a rising.Usually, when the line position was strained in drawing lines 8a rising, the rate of climb of drawing lines 8a was fast more, is suitable for making of thick clothing more.
Because the top of needle bar crank bar 5, on rotary motion trace, rotate, so the shank 6 that is being connected with needle bar crank bar 5 bottoms moves up and down with respect to the axial region 4b of counterweight 3 pivot off-centre.
In addition, in order to lower friction, the coupling part supplying lubricating oil between each parts.
In order to strengthen the amount of moving up and down of shank, must be set in the big position of offset with respect to the link position of the needle bar crank bar 5 of counterweight 3 apart from counterweight 3 pivots.But, strengthened offset after, when Sewing machines drove, the motion track of needle bar crank bar 5 and thread take-up tension lever crank 9 overlapped and contacts, so, can not strengthen the amount of moving up and down of shank.
Especially in making the Sewing machines that thick clothing uses, in order easily to send sewing fabric to, time of cloth is extracted in suture needle must be long as much as possible, so, preferably strengthen the ascending amount of shank.
In recent years, the requirement of Sewing machines high speed is strengthened day by day,, during connection between each parts of rotation, must adopt the bearing in big footpath for the requirement of corresponding high speed.But, in the connecting portion of the connecting portion of thread take-up tension lever crank 9 and sewing machine stand 1a and needle bar crank bar and crank axle 4,,, can cause two connecting portions to contact with each other and can not use then because the maximization of the diameter of each connecting portion if adopt the bearing in big footpath.Thereby can not realize high speed.
Once considered position with thread take-up tension lever bolster 10 towards the scheme of footpath direction, but so away from rotating shaft 2 since axial region 4a and thread take-up tension lever bolster 10 away from, so the drawing lines rate of climb of thread take-up tension lever slows down, the backguy deterioration.
In addition, when industrial sewing machines are rotated at a high speed, must be to the connecting portion supplying lubricating oil between each parts of rotation, to prevent sintering.But the lubricating oil of supply is often made dirty and is made thing.
Summary of the invention
For this reason, the purpose of this utility model provides the motion of Sewing machines, this motion, the suitable motion that can keep thread take-up tension lever, and the amount of moving up and down of increasing shank easily are applicable to the Sewing machines of making thick thing, in addition, even adopt the bearing in big footpath, each connecting portion is not in contact with one another yet, and can realize the rotary speed high speed of Sewing machines.In addition, adopt the bearing of enclosing the lubricating oil formula, can prevent that lubricating oil from spilling and make dirty and make thing.
To achieve these goals, the motion of Sewing machines of the present utility model has and is rotated needle bar mechanism and the thread take-up tension lever mechanism that the axle rotation drives, and also has counterweight, needle bar crank bar, thread take-up tension lever and thread take-up tension lever crank;
Above-mentioned counterweight is fixed on an end of above-mentioned rotating shaft;
Above-mentioned needle bar crank bar, the one end is connected the position of counterweight pivot off-centre rotationally, and its other end is connected on the shank rotationally;
Above-mentioned thread take-up tension lever, its cardinal extremity are connected the position of the lucky heart off-centre of counterweight rotatably, and its front end is formed with the drawing lines that passes for line;
Above-mentioned thread take-up tension lever crank, its cardinal extremity are bearing on the sewing machine stand rotationally, and its front end is connected with the close centre of above-mentioned thread take-up tension lever rotationally; The motion that is made of above structure is characterized in:
The sewing machine stand side connecting portion of the counterweight side connecting portion of above-mentioned needle bar crank bar and above-mentioned thread take-up tension lever crank departs from the axis direction configuration of above-mentioned rotating shaft.
Because the counterweight side connecting portion of needle bar crank bar and the sewing machine stand side connecting portion of above-mentioned thread take-up tension lever crank, depart from the axis direction configuration of rotating shaft, so, the counterweight of needle bar crank bar is connected, be connected apart from the bigger position of counterweight pivot off-centre or when strengthening the diameter of each connecting portion, each connecting portion of proper motion does not contact.
That is, do not change the position of thread take-up tension lever bolster, strengthen the amount of moving up and down of shank, especially in making the Sewing machines that thick thing uses, can keep good stringing state, can easily send to and make thing.
Another characteristics are, among the sewing machine stand side connecting portion of the counterweight side connecting portion of needle bar crank bar and thread take-up tension lever crank, at least one side's connecting portion has bearing, in this bearing filling lubricating grease.
Therefore, even supplying lubricating oil not also can keep the lubricated of connecting portion for a long time, and prevent to make dirty and make thing.
Description of drawings
By accompanying drawing embodiment of the present utility model is described further.Wherein:
Fig. 1 is the interior shank of the utility model sewing machine arm and the front elevation of thread take-up tension lever mechanism;
Fig. 2 is the local section side view of shank of the present utility model and thread take-up tension lever mechanism;
Fig. 3 is the partial enlarged drawing of Fig. 2;
Fig. 4 is the front elevation of structure of the prior art;
Fig. 5 is the local section side view of constructing in the prior art.
The specific embodiment
Below, referring to figs. 1 through Fig. 3,, to annotate with same tag with identical construction in the prior art, its detailed description is omitted.
5R is the needle bar crank bar, and the connecting portion 5Ra on its top is connected with crank axle 4, and 5Rb is connected with shank 6 in the company of its underpart.On the connecting portion 5Ra of the top of needle bar crank bar 5R, form the diameter connecting hole 5Ra1 bigger than the diameter of axial region 4b.The axial region 4b of crank axle 4 by the shell needle bearing 51R that is pressed into, inserts in the connecting hole 5Ra1.
Because needle bar crank bar 5R is connected by needle bearing 51R with crank axle 4, so, the rotational slide friction between two parts can be lowered.
In addition, top connecting portion 5Ra constitutes needle bar crank bar connecting portions 5R, counterweight 3 sides.
The bottom connecting portion 5Rb of needle bar crank bar 5R, with in the prior art similarly, the rotatable earth's axis of axial region 6a that is fixed on the shank 6 is being propped up.
In the shell needle bearing of Cai Yonging, the lubricating grease of solid in filling in advance in the present embodiment, even supplying lubricating oil not also has the effect of long-term attenuating friction.Its profile is bigger than common needle bearing.
8R is a thread take-up tension lever, forms at its front end and keeps supplying the drawing lines 8Ra that line passes usefulness, and 8Rb is connected with crank axle 4 in the company of its cardinal extremity.At the pars intermedia of thread take-up tension lever 8R, have the middle interconnecting piece 8Rc that the connection aftermentioned is chosen the front end of crank 9R.At the cardinal extremity connecting portion 8Rb of thread take-up tension lever 8R, form the diameter connecting hole 8Rb1 bigger than the axial region 4a of crank axle 4.The axial region 4a of crank axle 4 by the shell needle bearing 81R that is pressed into, inserts in the connecting hole 8Rb1.
Like this, owing to thread take-up tension lever 8R is connected by needle bearing 81R with crank axle 4, so, can lower the rotational slide friction between two parts.
Thread take-up tension lever crank 9R, the connecting portion 9Ra of its front end connects middle 8Rc with the centre of thread take-up tension lever 8R and is connected, and the connecting portion 9Rb of its cardinal extremity is connected with sewing machine stand 1Ra.
At cardinal extremity connecting portion 9Rb, form the diameter connecting hole 9Rb1 bigger than the axial region 10Ra of thread take-up tension lever bolster 10R.The axial region 10Ra of thread take-up tension lever bolster 10R by 2 shell needle bearing 91R, 91R of interpolation in upright arrangement, inserts in the connecting hole 9Rb1.At the state of having enclosed lubricating grease, with sealing gasket 92R, 92R will be sealed at both ends firmly.
On the connecting portion 9Ra of the front end of thread take-up tension lever crank 9R, form with prior art in towards the same axial region 9Ra1 of free wheel direction axial region outstanding, that be parallel to rotating shaft 29.On the middle interconnecting piece 8Rc of thread take-up tension lever 8R, form the diameter connecting hole 8Rc1 bigger than the axial region 9Ra1 of thread take-up tension lever crank 9R.The axial region 9Ra1 of thread take-up tension lever crank 9 by the shell needle bearing 82R that is pressed into, inserts in the connecting hole 8Rc1.
Like this, because thread take-up tension lever 8R and thread take-up tension lever crank 9R, by needle bearing 82R connection, so, the rotational slide friction between two parts can be lowered.
In addition, cardinal extremity connecting portion 9Rb constitutes thread take-up tension lever crank connecting portion 9R, the sewing machine stand side.
Among the present invention, as shown in Figure 3, the facing side end face 1Ra1 of sewing machine stand 1Ra (end face that this facing side end face 1Ra1 is joined by the flywheel side end face of cardinal extremity connecting portion 9Rb), compare with (see figure 5) of the prior art, be positioned at the close centre position of counterweight 3 at axis direction, towards the free wheel direction skew disposing.In addition, between the connecting portion 9Rb and connecting portion 9Ra of thread take-up tension lever crank 9R, the end of arm 9Rc is combined in the facial direction side end of cardinal extremity connecting portion 9Rb.
Like this, the connecting portion 9Rb of the connecting portion 5Ra of counterweight 3 sides of needle bar crank bar 5R and the sewing machine stand 1Ra side of thread take-up tension lever crank 9R, the axis direction that departs from rotating shaft 2 is disposing, so each connecting portion does not contact, but proper motion.
In the present embodiment, owing to adopt the big shell needle bearing 51R of diameter at connecting portion 5Ra, so the enlarged diameter of connecting portion.If structure of the prior art can contact with connecting portion 9Rb, and in the present embodiment, because above-mentioned each connecting portion 5Ra, 9Rb like that depart from the axis direction configuration of rotating shaft 2, so do not contact.
That is,, can realize the high speed of Sewing machines by adopting the big shell needle bearing of diameter.
Particularly in the present embodiment, because in the powerful part of centrifugal action, the shell needle bearing of solid lubrication fat that adopted filling, so lubricating grease can be because of centrifugal force splash, can prevent makes dirty makes thing, and, even supplying lubricating oil not also can keep lubricant effect for a long time.
Another embodiment
In the structure of the foregoing description,, can strengthen the offset of axial region 4b apart from counterweight 3 pivots by the axial region 4a of increasing crank axle 4 and the distance between 4b.
Like this, the amount of moving up and down of shank can be strengthened, especially in making the Sewing machines that thick thing uses, sewing fabric can be easily sent to.
In addition, in the present embodiment, do not contact and configuration for the counterweight side connecting portion that makes the needle bar crank bar, with the sewing machine stand side connecting portion of thread take-up tension lever crank with departing from, be with the thread take-up tension lever crank installation site on the sewing machine stand, towards the free wheel direction installation of staggering, but be not limited to this structure, if make the needle bar crank bar counterweight side connecting portion, dispose non-contiguously with the sewing machine stand side connecting portion of thread take-up tension lever crank with departing from.
In addition, also can not adopt shell needle bearing, and adopt the ball bearing of having enclosed lubricating grease.
The present invention is not limited to the foregoing description, in the scope that does not break away from purport of the present invention, can do various changes.
According to the invention of claim 1 record, the sewing machine stand side connecting portion of the counterweight side connecting portion of needle bar crank bar and thread take-up tension lever crank departs from the axis direction configuration of rotating shaft.
Therefore, even with the counterweight side connecting portion of needle bar crank bar, be connected apart from the bigger position of counterweight pivot off-centre, perhaps strengthen the diameter of each connecting portion, each connecting portion does not contact yet, but proper motion.
Do not change the position of thread take-up tension lever bolster, can strengthen the amount of moving up and down of shank, especially in making the Sewing machines that thick thing uses, can keep good stringing state, can easily send to and make thing.
According to the invention of claim 2 record, among the sewing machine stand side connecting portion of the counterweight side connecting portion of needle bar crank bar and thread take-up tension lever crank, at least one side's connecting portion has bearing, in bearing filling lubricating grease.
Therefore, even supplying lubricating oil not also can keep the lubricated of connecting portion for a long time, and prevent to make dirty and make thing.
Claims (2)
1. the motion of Sewing machines has needle bar mechanism and thread take-up tension lever mechanism that the rotation that is rotated axle drives, also has counterweight, needle bar crank bar, thread take-up tension lever and thread take-up tension lever crank;
Above-mentioned counterweight is fixed on an end of above-mentioned rotating shaft;
Above-mentioned needle bar crank bar, the one end is connected the position of counterweight pivot off-centre rotationally, and its other end is connected on the shank rotationally;
Above-mentioned thread take-up tension lever, its cardinal extremity is connected the position of counterweight pivot off-centre rotatably, and its front end is formed with the drawing lines that passes for line;
Above-mentioned thread take-up tension lever crank, its cardinal extremity are bearing on the sewing machine stand rotationally, and its front end is connected with the close centre of above-mentioned thread take-up tension lever rotationally; It is characterized in that,
The sewing machine stand side connecting portion of the counterweight side connecting portion of above-mentioned needle bar crank bar and above-mentioned thread take-up tension lever crank departs from the axis direction configuration of rotating shaft.
2. the motion of Sewing machines as claimed in claim 1, it is characterized in that, among the sewing machine stand side connecting portion of the counterweight side connecting portion of above-mentioned needle bar crank bar and thread take-up tension lever crank, at least one side's connecting portion has bearing, in bearing filling lubricating grease.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000338419A JP2002143587A (en) | 2000-11-07 | 2000-11-07 | Moving mechanism for sewing machine |
| JP338419/2000 | 2000-11-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2506669Y true CN2506669Y (en) | 2002-08-21 |
Family
ID=18813630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN01266890U Expired - Fee Related CN2506669Y (en) | 2000-11-07 | 2001-11-06 | Movement mechainsm for sewing machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2002143587A (en) |
| KR (1) | KR200265632Y1 (en) |
| CN (1) | CN2506669Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525821B (en) * | 2008-03-06 | 2012-12-12 | Juki株式会社 | Sewing machine |
| CN102943352A (en) * | 2012-12-05 | 2013-02-27 | 苏磊 | Thick stuff sewing machine |
| CN107245818A (en) * | 2017-06-16 | 2017-10-13 | 杰克缝纫机股份有限公司 | A kind of simple take-up governor motion of sewing machine and sewing machine |
| CN112024179A (en) * | 2020-08-24 | 2020-12-04 | 王关红 | Industrial cloth processing device |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780324B (en) * | 2016-05-19 | 2018-06-29 | 拓卡奔马机电科技有限公司 | Use in sewing machine supplies line mechanism and sewing machine |
| CN106854798B (en) * | 2016-12-28 | 2020-03-24 | 杰克缝纫机股份有限公司 | Sewing machine and vibration damper thereof |
| CN106757844B (en) * | 2016-12-28 | 2020-01-31 | 杰克缝纫机股份有限公司 | sewing machine and damping structure thereof |
| CN106637729B (en) * | 2016-12-28 | 2020-02-07 | 杰克缝纫机股份有限公司 | Sewing machine and mechanism for reducing vibration of sewing machine |
| CN113186670B (en) * | 2021-03-23 | 2023-05-02 | 绍兴市晶远花型设计有限公司 | Embroidery machine driver |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08131679A (en) * | 1994-11-09 | 1996-05-28 | Brother Ind Ltd | Thread take-up lever and needle bar mechanism for sewing machine |
| JP3798857B2 (en) * | 1996-10-14 | 2006-07-19 | Ｊｕｋｉ株式会社 | Industrial sewing machine lubrication equipment |
-
2000
- 2000-11-07 JP JP2000338419A patent/JP2002143587A/en active Pending
-
2001
- 2001-11-05 KR KR2020010033830U patent/KR200265632Y1/en not_active IP Right Cessation
- 2001-11-06 CN CN01266890U patent/CN2506669Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101525821B (en) * | 2008-03-06 | 2012-12-12 | Juki株式会社 | Sewing machine |
| CN102943352A (en) * | 2012-12-05 | 2013-02-27 | 苏磊 | Thick stuff sewing machine |
| CN107245818A (en) * | 2017-06-16 | 2017-10-13 | 杰克缝纫机股份有限公司 | A kind of simple take-up governor motion of sewing machine and sewing machine |
| CN112024179A (en) * | 2020-08-24 | 2020-12-04 | 王关红 | Industrial cloth processing device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2002143587A (en) | 2002-05-21 |
| KR200265632Y1 (en) | 2002-02-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20020821 Termination date: 20101106 |