CN1321235C - Sewing machine needle oscillating apparatus - Google Patents
Sewing machine needle oscillating apparatus Download PDFInfo
- Publication number
- CN1321235C CN1321235C CNB011158522A CN01115852A CN1321235C CN 1321235 C CN1321235 C CN 1321235C CN B011158522 A CNB011158522 A CN B011158522A CN 01115852 A CN01115852 A CN 01115852A CN 1321235 C CN1321235 C CN 1321235C
- Authority
- CN
- China
- Prior art keywords
- eedle
- pressure
- oscillating apparatus
- producing part
- sewing machines
- 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 - Lifetime
Links
Images
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B55/00—Needle holders; Needle bars
- D05B55/14—Needle-bar drives
-
- 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
- D05B71/00—Lubricating or cooling devices
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2305/00—Operations on the work before or after sewing
- D05D2305/32—Measuring
- D05D2305/36—Quality control
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a needle swinging device capable of preventing the needle swinging device from overrunning due to hunting of a stepping motor. A needle bar supporting base 20 supporting vertically movably a needle bar 14, a needle swinging motor 4 capable of intermittently rotating positively or negatively, and controlling the rotation angle, a needle bar supporting base shaft 24, one end of which is fixed to the needle bar supporting base and supported movably in the direction perpendicular to a cloth feeding direction, connecting members 22, 26 and 30 connecting the needle oscillation motor and the other end of the needle bar supporting base shaft, and a pressing force providing means 42, 48, 50 and 52 providing a pressing force radially to the needle bar supporting base shaft are provided.
Description
Technical field
The present invention relates to a kind of Sewing machines, particularly relate to a kind of eedle reciprocally swinging on the direction vertical that makes, carry out the needle oscillating apparatus in the Sewing machines that zigzag makes with cloth feeding direction.
Background technology
As the needle oscillating apparatus of Sewing machines, in the past, the device that real public clear 61-8843 communique is recorded and narrated was known.In this needle oscillating apparatus, as shown in Figure 6, eedle swing platform 2 is supporting and main shaft 12 interlocks and the shank 14 that can slide at above-below direction, and it can be supported on the fulcrum 16 in the upper end with the vertical direction swing of cloth feeding direction simultaneously.
Its cardinal extremity is fixed on the action link rod 6 on the output shaft 4a of stepper motor 4, the outstanding action pin 6a that is provided with of its other end.On the jack back 8 that is supported on rotationally by fulcrum 17 in the frame, be formed with the slotted hole 8a that engages with the action pin 6a of action link rod 6 along its length direction.Interlock body 10 is connected to the pars intermedia of eedle swing platform 2 and jack back 8 respectively rotationally with fulcrum 10a, 10b.
This needle oscillating apparatus makes stepper motor 4 deflection arbitrary phase angles for each pin, like this by jack back 8, interlock body 10 make the shank 14 that is supported on the eedle swing platform 2 with the vertical direction of cloth feeding direction on swing, can sew various stitchings by the eedle 18 that is fixed on shank 14 lower ends.
Usually, in industrial sewing machines, because the pin number with the thousands of pins of per minute is made when running up, so also will control with the rotary speed of the thousands of commentaries on classics of per minute to stepper motor 4.Except control to such high speed rotation, because parts (eedle swing platform 2, jack back 8, the interlock body 10 etc.) weight that drives with stepper motor 4 is very big, so because imbalance, it is very difficult that eedle 18 is stopped in the eedle swing position of defined.That is, can produce the offside operation that causes by the inertia of the change of the rotation of stepper motor 4 output and parts, stop in the eedle swing position that surpasses regulation.Perhaps, the eedle swing position that causes producing offside operation and surpassing defined owing to the change of shaking load with parts stops.
If eedle 18 can not be stopped at assigned position, just can not form the desirable pattern of making stitching, the quality of sewings is significantly reduced.
Summary of the invention
So the objective of the invention is to provide a kind of needle oscillating apparatus, can prevent the offside operation of the needle oscillating apparatus that causes owing to stepper motor imbalance.
Needle oscillating apparatus according to Sewing machines provided by the present invention, has the shank brace table that supports the shank that moves up and down, be fixed on eedle wobble drive axle on the shank brace table with an end, with be connected with the other end of described shank brace table by bindiny mechanism and control the eedle swing motor that this shank brace table moves along direction vertical with cloth feeding direction, it is characterized in that, also be provided with pressing mechanism, the setting that is associated with described eedle wobble drive axle of this pressing mechanism is in order to give the resistance to sliding of described eedle wobble drive axle.Provide the resistance to sliding that moves horizontally by pressing mechanism with respect to eedle wobble drive axle.
Described pressing mechanism, it is desirable having the pressure-producing part cylindric or the semicircle tubular that encases eedle wobble drive axle.
And described pressing mechanism has on the sewing machine stand of being fixed on, and is supporting described eedle wobble drive axle and making its 2 axle bushes that can axially move and the pressure-producing part that is arranged between these 2 axle bushes is desirable.
And it is desirable that described pressing mechanism also has the elastomer that forces in described pressure-producing part.
And, also have the screw that docks with described elastomer, it is desirable can adjusting elastomeric power by screw.
Between described pressure-producing part and described sewing machine stand, it is desirable forming radial clearance.
Described pressure-producing part, it is desirable having the oil supplying hole that leads to internal diameter from its external diameter.And, on described sewing machine stand, form the hole that described elastomer and screw are passed, by this hole and described oil supplying hole, it is desirable lubricating oil can being injected on the sliding surface of described pressure-producing part and eedle wobble drive axle.
It is desirable that the surface of the sliding part of described eedle wobble drive axle and described pressure-producing part is formed by metal or pottery.
And it is desirable forming concavo-convex on the end face of described pressure-producing part.
Description of drawings
Below, accompanying drawing and label thereof are carried out simple declaration.
Fig. 1 is the overall diagram of the needle oscillating apparatus of present embodiment.
Fig. 2 is the profile of the eedle wobble drive axle support structure of present embodiment.
Fig. 3 is the profile of the III-III of Fig. 2.
Fig. 4 is the bearing of present embodiment and the profile of pressure-producing part.
Fig. 5 is the stereogram of the pressure-producing part of present embodiment.
Fig. 6 is the stereogram of needle oscillating apparatus in the past.
Among the figure: 4-stepper motor, 4a-output shaft, 14-shank, 20-shank brace table, 22-eedle swing connecting bar, 24-eedle wobble drive axle, 26-eedle wobble drive bar, 28,32-pin, 30-abut parts, 34-sewing machine stand, 40,44-axle bush, 42-collar (pressure-producing part), 48-spring (elastomer), 50,52-screw.
The specific embodiment
Embodiment
Embodiment with reference to the needle oscillating apparatus of Fig. 1～5 pair Sewing machines of the present invention describes.This needle oscillating apparatus has shank brace table 20 and stepper motor 4 and eedle swing connecting bar 22 and eedle wobble drive axle 24.Shank 14, its lower end is installed with eedle 18, moves up and down with last axle (machine spindle) 12 interlocks.Shank brace table 20 is supporting this shank 14 that can move up and down.Stepper motor 4, its output shaft 4a can rotate on its positive and negative any direction off and on.
On the output shaft 4a of stepper motor 4, fixing eedle wobble drive bar 26, on eedle wobble drive bar 26, connecting an end of rotating eedle swing connecting bar 22 by pin 28.Eedle wobble drive axle 24 is connected by the other end of pin 32 with eedle swing connecting bar 22 by abut parts 30, one ends, and simultaneously, its other end is fixed on the shank brace table 20.This eedle wobble drive axle 24 is axially being supported slidably by the 1st and the 2nd bearing 36,38 that is installed in sewing machine stand 34 chain-drive section bottoms.Above-mentioned eedle swing connecting bar 22, abut parts 30, pin 28,32 constitute bindiny mechanism.
When the output shaft 4a of stepper motor 4 rotation, by eedle wobble drive bar 26 and eedle swing connecting bar 22, eedle wobble drive axle 24 is reciprocating.When the reciprocating motion by this eedle wobble drive axle 24 makes shank 14 when left and right directions (direction of arrow among Fig. 1) is reciprocating, the cooperation of the work feed motion by perpendicular direction sews double diagonal stitch.
In the 1st and the 2nd bearing 36,38, be arranged on the 1st bearing 36 in the place ahead, be fixed on the sewing machine stand 34 with axle bush.The 2nd bearing 38 is made of 2 axle bushes 40,44 and 1 collar (pressure-producing part) 42 of being arranged between these 2 axle bushes.2 axle bushes 40,44 have same shape, and as shown in Figure 4, the internal diameter of its outer through hole 34a that forms on than sewing machine stand 34 through 44a is bigger.So axle bush 40,44 is pressed into through hole 34a, is fixed on the sewing machine stand 34.
In addition, Zhong Yang collar 42 is outer more smaller than the internal diameter of through hole 34a through 42a.And between collar 42 and 2 axle bushes 40,44, its direction of principal axis is formed with the gap slightly.Institute has the gap so that collar 42 is diametrically opposed in through hole 34a, and the axle bush 40,44 with respect to both sides has the gap on direction of principal axis simultaneously.
As shown in Figure 3, on sewing machine stand 34, with the position, opposite of collar (pressure-producing part) 42 sides on be formed with screw hole 46.The spring 48 that inserts this screw hole 46 is given the power of collar 42 to radially inner side by screw 50,52 compressions.By this power, collar 42 is to 24 pressurizations of eedle wobble drive axle, so produce resistance to sliding between eedle wobble drive axle 24 and the collar 42.Owing to use spring 48, so that above-mentioned resistance to sliding can keep for a long time is certain substantially.The size of this resistance to sliding can be adjusted by screw 50,52.And for preventing to become flexible, it is better than only using 1 screw to use 2 screws.
Inner-diameter portion whose at collar 42 and 2 axle bushes 40,44 is formed with groove 40b, 42b and 44b respectively.And, on collar 42, be formed with the aperture 42c that is communicated with groove 42b from external diameter.As shown in Figure 4, in the space that between by axle bush 40,44, collar 42 and sewing machine stand 34, forms, inject lubricating oil such as grease from the screw hole 46 of sewing machine stand 34, can supply with the sliding surface of collar 42 and eedle wobble drive axle 24 and the sliding surface between axle bush 40,44 and the eedle wobble drive axle 24 to lubricating oil by aperture 42c.In the 2nd bearing 38, except sliding as common bearing, also by coil spring 48 to collar 42 application of forces, constitute desirable structure that can fuel feeding like this.
In the present embodiment, do the external diameter 42a of above-mentioned collar (pressure-producing part) 42 little, make and the internal diameter of the through hole 34a of sewing machine stand 34 between form radial clearance, between 2 axle bushes 40,44 and collar 42, form end play simultaneously, so lubricating oil can be remained in these gaps.And on the end face 42d of collar 42, as shown in Figure 5, form concavo-convex.Concavo-convexly can maintain lubricating oil easilier by this.In this embodiment, the lubricating oil confining force that is provided with in the 2nd bearing 38 is bigger.So what can prevent to produce along with giving eedle wobble drive axle 24 sliding forces with collar 42 burns and weares and teares, and can also reduce the fuel feeding number of times simultaneously.
With the gap axially of central collar 42, that is, will and the axle bush 40,44 of both sides between the gap be set in 0.01～0.5mm, it is offside to prevent effectively that imbalance owing to stepper motor 4 from causing.And, can also prevent the impact sound between collar 42 and the axle bush 40,44.
Though with reference to the accompanying drawings embodiments of the invention are illustrated, do not limit and this embodiment, can carry out various distortion.For example,, shown the example of the cylindric collar that encases eedle wobble drive axle 24, this cylinder-like part axially clipped half semicircular cylinder collar but also can use as the structure of pressure-producing part.Except that so cylindric or semicircle tubular, the pressing mechanism as apply radial pressure to eedle wobble drive axle 24 can adopt various structures.But, when using collar 42 cylindric or the semicircle tubular to encase eedle wobble drive axle 24,, just can obtain the desirable face contact that contacts with eedle wobble drive axle 24 if push down with spring 48.Like this contact area is enlarged, can prevent to eliminate the gap value that is produced with the eccentric wear damage when eccentric wear from decreasing.
And, because the material of pressure-producing part of the present invention has the bearing function, so,, just can easily consider the spring 48 that omits present embodiment if use the material of pressure-producing part instead spring material though use the Phosphorus bronze.And can also easily think sealing ring is used for pressure-producing part, can give the sliding friction of eedle wobble drive axle.
In addition, though shown the example that the bearing 38 that is positioned at Sewing machines rear one side in the 1st and the 2nd bearing 36,38 has collar 42, also collar 42 can be set in place on the 1st bearing 36 of the place ahead one side, 38 on the 2nd bearing uses as axle bush.
In addition, though shown the example of the coil spring 48 that uses as elastomer, also can use leaf spring to the inboard application of force of collar 42 direction of principal axis.Though show from the example of front along continuous straight runs to collar 42 application of forces, also can be from the top downwards or from the below upward, from the back side the one side along continuous straight runs application of force.
Needle oscillating apparatus according to Sewing machines of the present invention, owing to be provided with the pressing mechanism of radially exerting pressure to eedle wobble drive axle, so caused the resistance to sliding that moves horizontally, eedle stopped in the eedle swing position of regulation easily with respect to eedle wobble drive axle.Therefore, can prevent the offside operation of the needle oscillating apparatus that the imbalance owing to stepper motor produces.
When pressing mechanism is when having the structure that encases the cylindric of eedle wobble drive axle or semicircle tubular pressure-producing part, owing to strengthened contact area with eedle wobble drive axle, so be difficult for producing wearing and tearing and gap.
If pressing mechanism is to have to make the radially elastomeric structure of the application of force of pressure-producing part, just can keep certain substantially pressure for a long time.
If have the screw that docks with elastomer, and can adjust the structure of pressure, just can adjust pressure simply according to making the result with screw.
If pressing mechanism is to have to be fixed on the sewing machine stand and to support 2 axle bushes that eedle wobble drive axle can axially move, and be arranged on the structure of the pressure-producing part between these 2 axle bushes, when between pressure-producing part and sewing machine stand, forming radial clearance, pressure-producing part is just removable, can can keep lubricating oil in the crack betwixt simultaneously to the pressurization of eedle wobble drive axle.
When forming the gap between 2 axle bushes at pressure-producing part, axle bush just can independently move, and eedle wobble drive axle is pressurizeed.And in this gap, can keep lubricating oil.
When pressure-producing part is to have when external diameter leads to the structure of oil supplying hole of internal diameter, owing to can be effective from the viewpoint that prevents sintering and wearing and tearing from external diameter one side direction internal diameter one side (with the sliding part of eedle wobble drive axle) fuel feeding.
In addition, on sewing machine stand, be formed with the hole that penetrates of elastomer and screw, can inject lubricating oil to the sliding surface of pressure-producing part and eedle wobble drive axle by this hole and oil supplying hole, can carry out simple fuel feeding like this, and be effective from the viewpoint that prevents sintering and wearing and tearing.
Because the sliding part surface of eedle wobble drive axle and pressure-producing part is to be formed by metal or pottery, so can reduce wear.
When the end face at pressure-producing part forms when concavo-convex, owing to strengthened the surface area of its end face, so improved the confining force of lubricating oil more.
Claims (11)
1. the needle oscillating apparatus of a Sewing machines, has the shank brace table that supports the shank that moves up and down, be fixed on eedle wobble drive axle on the shank brace table with an end, with be connected with the other end of described shank brace table by bindiny mechanism and control the eedle swing motor that this shank brace table moves along direction vertical with cloth feeding direction, it is characterized in that, also be provided with pressing mechanism, the setting that is associated with described eedle wobble drive axle of this pressing mechanism is in order to give the resistance to sliding of described eedle wobble drive axle.
2. according to the needle oscillating apparatus of the described Sewing machines of claim 1, it is characterized in that described pressing mechanism has the pressure-producing part of the cylindric or semicircle tubular that encases eedle wobble drive axle.
3. according to the needle oscillating apparatus of the described Sewing machines of claim 2, it is characterized in that, described pressing mechanism has and is fixed on the sewing machine stand and supports 2 axle bushes that described eedle wobble drive axle axially moves, and is arranged on the pressure-producing part between these 2 axle bushes.
4. according to the needle oscillating apparatus of the described Sewing machines of claim 3, it is characterized in that described pressing mechanism has the elastomer to the described pressure-producing part application of force.
5. according to the needle oscillating apparatus of the described Sewing machines of claim 4, it is characterized in that having the screw that docks with described elastomer, can regulate elastomeric pressure by screw.
6. according to the needle oscillating apparatus of the described Sewing machines of claim 3, it is characterized in that, between described pressure-producing part and described sewing machine stand, form radial clearance.
7. according to the needle oscillating apparatus of the described Sewing machines of claim 3, it is characterized in that, between described pressure-producing part and described 2 axle bushes, form end play.
8. according to the needle oscillating apparatus of the described Sewing machines of claim 3, it is characterized in that described pressure-producing part has the oil supplying hole that leads to internal diameter from its external diameter.
9. according to the needle oscillating apparatus of the described Sewing machines of claim 8, it is characterized in that, on described sewing machine stand, be formed with the hole that penetrates described elastomer and screw, can inject lubricating oil to the sliding surface of described pressure-producing part and eedle wobble drive axle by this hole and described oil supplying hole.
10. according to the needle oscillating apparatus of the described Sewing machines of claim 3, it is characterized in that the sliding part surface of described eedle wobble drive axle and described pressure-producing part is formed by metal or pottery.
11. the needle oscillating apparatus according to the described Sewing machines of claim 3 is characterized in that, forms concavo-convex on the end face of described pressure-producing part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000136782A JP4450947B2 (en) | 2000-05-10 | 2000-05-10 | Sewing machine needle swing device |
| JP136782/2000 | 2000-05-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1322870A CN1322870A (en) | 2001-11-21 |
| CN1321235C true CN1321235C (en) | 2007-06-13 |
Family
ID=18644670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011158522A Expired - Lifetime CN1321235C (en) | 2000-05-10 | 2001-05-10 | Sewing machine needle oscillating apparatus |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP4450947B2 (en) |
| KR (1) | KR100794398B1 (en) |
| CN (1) | CN1321235C (en) |
| CZ (1) | CZ300358B6 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003326005A (en) * | 2002-05-08 | 2003-11-18 | Brother Ind Ltd | Needle feeding sewing machine |
| CN101363170B (en) * | 2008-09-12 | 2012-05-02 | 浙江宝石机电股份有限公司 | Rolling wheel regulator of sewing machine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4185572A (en) * | 1978-03-23 | 1980-01-29 | The Singer Company | Electro-mechanical actuator for use in a sewing machine |
| US4324191A (en) * | 1981-06-08 | 1982-04-13 | The Singer Company | Auxiliary sewing machine motor braking |
| US4326472A (en) * | 1978-02-10 | 1982-04-27 | Brother Kogyo Kabushiki Kaisha | Needle oscillating mechanism for a sewing machine |
| US4351254A (en) * | 1981-06-08 | 1982-09-28 | The Singer Company | Sewing machine needle positioning |
| CN1202545A (en) * | 1997-06-13 | 1998-12-23 | 高林股份有限公司 | Needle-stick linkage transmission mechanism of sewing machine |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1049675B (en) * | 1953-04-11 | |||
| ES176002Y (en) * | 1972-01-08 | 1972-11-16 | Maquinas De Coser Alfa, S. A. | PERFECTED DEVICE TO PRODUCE THE ALTERNATIVE OR FIXED TRANSVERSAL DISPLACEMENT OF THE NEEDLE IN SEWING MACHINES. |
| JP2650383B2 (en) * | 1988-12-20 | 1997-09-03 | ブラザー工業株式会社 | Zigzag sewing machine |
| JPH05293265A (en) * | 1992-04-17 | 1993-11-09 | Juki Corp | Needle swing drive changing device for zigzag stitch sewing machine |
| JP2821852B2 (en) * | 1994-02-28 | 1998-11-05 | ジューキ株式会社 | Needle bar swing guide device of sewing machine |
| US5960725A (en) * | 1998-01-13 | 1999-10-05 | Tseng; Hsien Chang | Rotary needle driving mechanism for a sewing machine |
| JPH11319349A (en) * | 1998-05-19 | 1999-11-24 | Juki Corp | Needle swinging sewing machine |
-
2000
- 2000-05-10 JP JP2000136782A patent/JP4450947B2/en not_active Expired - Fee Related
-
2001
- 2001-05-07 KR KR1020010024507A patent/KR100794398B1/en not_active IP Right Cessation
- 2001-05-09 CZ CZ20011621A patent/CZ300358B6/en not_active IP Right Cessation
- 2001-05-10 CN CNB011158522A patent/CN1321235C/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4326472A (en) * | 1978-02-10 | 1982-04-27 | Brother Kogyo Kabushiki Kaisha | Needle oscillating mechanism for a sewing machine |
| US4185572A (en) * | 1978-03-23 | 1980-01-29 | The Singer Company | Electro-mechanical actuator for use in a sewing machine |
| US4324191A (en) * | 1981-06-08 | 1982-04-13 | The Singer Company | Auxiliary sewing machine motor braking |
| US4351254A (en) * | 1981-06-08 | 1982-09-28 | The Singer Company | Sewing machine needle positioning |
| CN1202545A (en) * | 1997-06-13 | 1998-12-23 | 高林股份有限公司 | Needle-stick linkage transmission mechanism of sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1322870A (en) | 2001-11-21 |
| KR20010103647A (en) | 2001-11-23 |
| JP2001314673A (en) | 2001-11-13 |
| CZ300358B6 (en) | 2009-04-29 |
| KR100794398B1 (en) | 2008-01-16 |
| JP4450947B2 (en) | 2010-04-14 |
| CZ20011621A3 (en) | 2003-05-14 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
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Granted publication date: 20070613 |