CN1042357C - Oil restricting unit of sewing machine - Google Patents
Oil restricting unit of sewing machine Download PDFInfo
- Publication number
- CN1042357C CN1042357C CN95104566A CN95104566A CN1042357C CN 1042357 C CN1042357 C CN 1042357C CN 95104566 A CN95104566 A CN 95104566A CN 95104566 A CN95104566 A CN 95104566A CN 1042357 C CN1042357 C CN 1042357C
- Authority
- CN
- China
- Prior art keywords
- oil
- lubricating oil
- shuttle
- limiting part
- oil mass
- 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
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Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B67/00—Devices incorporated in sewing machines for lubricating, waxing, or colouring the threads
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The purpose of the invention is to provide an oil adjusting and restricting unit which has a wider adjusting range of lubricating oil than former oil restricting unit, and is easy to facilitate the adjustment for the quantity of lubricating oil. The unit comprises an oil volume limiting member of sewing machine composed of an oil limiting member body generally filling a passage in a lubricating oil passage in a lower shaft supporting at its end a rotating driving hook, by forming at least one corner part in the upstream part of the oil volume limiting member body as viewed in the direction of the flow of the lubricating oil.
Description
The present invention relates to a kind of such as the high rotating speed Sewing machines of industrial sewing machines, in the end support outer shuttle and by the oil passage of the lower shaft of revolution driving in, the oil restricting unit of sewing machine of the oil mass limiting part body that is full of path substantially is set, particularly relates to a kind of improvement of this oil mass limiting part body end surface shape.
For this industrial sewing machines because sewing needle is reciprocating with 5500 times speed in the highest 1 minute, so carry out with the shuttle mechanism of this pin action relevant action etc. with the highest 11000 times speed revolution.Here, in the bearing everywhere of this high speed rotary, in case inconsiderate pump coercively fed lubricating oil burns out because of parts are overheated or the danger of wearing terrain with regard to having.
; for Sewing machines; by aforementioned lower shaft, outer shuttle with hold and be supported in the full circle swinging shuttle that the interior shuttle on the inboard bottom line axle of outer shuttle forms and construct; generally be in order to collude bottom line passing reaching the standard grade of pin; how all static hold the reciprocating motion of interior shuttle pin of the bobbin of rolling up bottom line; on the contrary, have colluding the hook of reaching the standard grade outer shuttle but along with the reciprocating motion high speed rotary of pin.
Here, external shuttle and on the interior shuttle sliding surface that slides mutually, must be to its supplying lubricating oil, but this lubricating oil begins to be formed on other oil passage on the outer shuttle, the inwardly anchor ring of shuttle supply by the oil passage from the lower shaft that is formed at outer shuttle support in the past.
At first, the ordinary circumstance of this Sewing machines full circle swinging shuttle structure is illustrated with Fig. 5.
In the 5th figure, be provided with the lower shaft 1 of high speed rotary with the such driving means of not shown motor, it is supporting and is limiting its axially-movable by the thrust bearing 3 in a pair of bearing shell 2 (only illustrating an end) that is assembled in the axially spaced-apart setting.At the central part of this lower shaft 1, be formed on axially extended the 1st oil passage 4, in the 1st oil passage 4, can be from having omitted the base end side supplying lubricating oil of illustrated lower shaft 1.
Aforementioned outer shuttle body 10 usefulness are than the big substrate of aforementioned base portion 6 diameters 11 and be linked to these substrate 11 distolateral roughly cylindrical circular periphery walls 12 and constitute.And with the outer peripheral face 12a that is positioned at this periphery wall 12, fixing than not shown screw on the cranse parts 13 of thin-walled.Have again, outside aforementioned, form circular guide groove 14 on the periphery of shuttle 5 periphery walls 12.
In the inner space 15 of shuttle 5, setting can rotating interior shuttle 16 with respect to this outer shuttle 5 outside aforementioned.The shuttle 16 overall cylindrical shapes that form roughly in being somebody's turn to do on the outer peripheral face 16a of shuttle 16, except that the backguy position, are provided with in outer shuttle 5 guide groove 14 of a circle embedding in this, and the roughly circular direction protrusion 17 that relatively circumferentially slides.Also have, the base end part of shuttle 16 in aforementioned, the support plate 18 that integral installation is provided with along its rectilinear direction at vertical central portion of this support plate 18, is arranged on the axially extended support hook 19 at interior shuttle 16 on the same axle.On this support hook 19, adorning the not shown bobbin of rollback bottom line.
11 li of the substrates of the outer shuttle body 10 of shuttle 5 outside aforementioned form and communicate and the circular depressions 20 bigger than centre bore 7 diameters with aforementioned centre bore 7,20 li of this circular depressions, are communicated with and are in the 2nd interior oil passage 21 of aforementioned outer shuttle 5.The 2nd oil passage 21 roughly radioactivity direction is formed extended at both sides on substrate 11, it is by the radioactivity direction path 22 that is communicated in circular depressions 20 and be communicated in the outer end of this radioactivity direction path 22 and be laid on the axial passageway of roughly extending vertically on the periphery wall 12 and forming 23 from substrate 11 and constitute.
The front end of axial passageway 23 arrives near the aforementioned guide groove 14.In the aforementioned periphery wall 12 at this position, form the circular filter chamber 24 that is communicated in guide groove 14 and axial passageway 23 respectively.Also have, this filter chamber 24 opens to the outer peripheral face 12a of periphery wall 12, is covered with not shown lid.And, in filter chamber 24, hold making the fixing filter element of forming by felt etc. of non-textile fiber.
Adorning the oil mass limiting part of establishing for the restriction oil mass 26 at the leading section of lower shaft 1 on the other hand, these oil mass limiting part 26 usefulness limit the oil mass limiting part body 26A of actual oil mass and keep the maintenance sleeve 27 of this oil mass limiting part body 26A to constitute.This maintenance sleeve 27 is by the 1st oil passage 4 of lower shaft 1 being threaded and forming the sleeve body 28 of threaded portion outer peripheral face as inner peripheral surface and on the not shown threaded portion, with constitute than being connected with the big ring flange of the 1st oil passage 4 diameters on this sleeve body 28 29, on this ring flange 29, form the intercommunicating pore 30 that is communicated with the inboard and circular depressions 20 of sleeve body 28.Be communicated with intercommunicating pore 30 in sleeve body 28 inboards, be formed on the recess 31 that the little truncated cone of intercommunicating pore 30 side radiuses forms.And the oil mass limiting part body 26A that are contained in the sleeve body 28 form with porous sintered body, constitute and about equally cylindric of sleeve body 28 internal diameters.
Above-described full circle swinging shuttle structure has following effect.
That is to say that lower shaft 1 and outer 5 while of shuttle high speed rotary are during making with not shown pin, by in the 1st oil passage 4 of lower shaft 2 and not shown pump high voltage supply lubricating oil.Remove off the structure other high-speed slide part of this full circle swinging shuttle and must supply with the lubricating oil of a large amount of high pressure, yet, in this full circle swinging shuttle structure, keep the lubricating oil of high pressure from the guide groove 14 of outer shuttle 5, to spray in the same old way, lubricating oil will pollute the cloth in making etc.Here, in the 1st oil passage 4, oil mass limiting part 26 is being set, because the opposing of oil mass limiting part body 26A during the oil mass limiting part body 26A of lubricating oil by this oil mass limiting part 26, the lubricating oil by oil mass limiting part body 26A will reduce its oil pressure and oil mass.And, when the radioactivity direction path 22 of the outer shuttle body of by high speed rotary 10, be lubricated the acceleration of oil to a certain extent, from the direction protrusion 17 of the guide groove 14 inside shuttles 16 of outer shuttle 5 supplying lubricating oil in right amount with centrifugal force.
Yet, have now lubricating oil from the mechanism of pump to 4 supplies of the 1st oil passage, as shown in Figure 6, be formed in the bearing shell 2 that the lubricating oil that upstream side is communicated to not shown pump is supplied with road 32 and the end that aforementioned lubricating oil is supplied with road 32 downstream side branches is communicated to that the 1st oil passage is 4 interior, the tip of the other end is communicated with not shown oil groove draining path 33.Can be arranged on the adjustment screw 34 that to regulate these draining path 33 aperture areas on the bearing shell 2 with advancing and retreat.
Like this, regulate the aperture area of draining path 33, regulate oil mass and the oil pressure supplied with to the 1st oil passage 4 indirectly with screwing adjustment screw 34.
Here, with high speed rotary running Sewing machines the time, owing to must resist the centrifugal force of lower shaft 1 high speed rotary, supplying with road 32 from lubricating oil supplies with lubricating oil as shown by arrows to the 1st oil passage 4, so in pump, use quite high pressure, by lubricating oil supply passageway 32, lubricating oil is supplied with to the 1st oil passage 4.
But in a single day the oil pressure of pump improves, and the lubricating oil quantity delivereds in the 1st oil passage 4 also just increase.Here, the upstream side end face 26a of the lubricating oil circulating direction of the oil mass limiting part 26 in the 1st oil passage 4 forms the circular flat perpendicular to circulating direction, so influence that the shape of the upstream side end face 26a of oil mass limiting part 26 is flowed by lubricating oil less, lubricating oil passes through the oil mass limiting part body 26A of oil mass limiting part 26 easily, flow to the 2nd oil passage 21 directions of outer shuttle 5, thereby the oil mass of supplying with from the guide groove 14 of outer shuttle 5 is many, has the problem of polluting tailoring cloth.Therefore, the quantity delivered of regulating lubricating oil according to the rotating speed that changes pump is very delicate, and adjustable range is also narrow, is difficult to regulate.
The purpose of this invention is to provide the problems referred to above that solve the past oil mass limiting part, enlarge the adjustable range of supplying lubricating oil, be lubricated the oil restricting unit of sewing machine of the adjusting of oil supply amount easily.
A kind of oil restricting unit of sewing machine, set the oil mass limiting part body that is full of path substantially in the oil passage of the lower shaft that shuttle and revolution drive outside the end is supported, it is characterized in that, dirty relatively part, in the diameter difference of the upstream side part of the oil flow direction of aforementioned oil mass limiting part body, thereby form the different part of centrifugal force when rotating.
According to formation of the present invention, the lubricating oil that revolution by oil mass limiting part body accumulates in the bight sprays on disk, to giving and opposing near flowing of the current lubrication oil intrinsic periphery of oil mass limiting part, so to applying restriction to oil mass, and increase the increase of centrifugal force thereupon by revolution in the oil mass limiting part body, reduce the increase of giving oil mass.
With illustrated embodiment the present invention is illustrated below.
The 1st figure is the figure of expression first embodiment of the invention.In this embodiment, the oil mass limiting part body 26A of oil mass limiting part 26 is provided with the diameter large-diameter portion 26B also bigger than base portion, with respect to the lubricating oil circulating direction, the upstream side end face 26a that intersects vertically is arranged, and forms tangible circular flat shape.This oil mass limiting part body 26A makes of the sintered body of porous.
Then, the formation with this first embodiment obtains following effect.I.e. being flowing under the few situation of oil mass of lubricating oil in the 1st oil passage 4, by centrifugal force shown in the arrow X of the 2nd figure, only in the flows outside of the 1st oil passage 4.To this, revolution increases oil mass and increases, and shown in the arrow y of the 2nd figure, the part of the central shaft of close a little the 1st oil passage 4 that becomes flows, and flows to lubricating oil circulating direction downstream side by the sintered body of porous.On the one hand, a part that enters the lubricating oil among the oil mass limiting part body 26A flows to peripheral direction by centrifugal force, and still, make bight 26b place assemble a large amount of lubricating oil by lubricant oil surface tension force this moment.By increasing centrifugal force, lubricating oil disperses to the peripheral direction of the 1st oil passage from the bight 26b of large-diameter portion 26B.Its result for the 1st oil passage 4, makes the mobile resistance that is subjected to of lubricating oil by the lubricating oil that disperses, because of the mobile genus laminar flow conditions of lubricating oil reduces the oil mass by oil mass limiting part body 26A.So, the fuel-flow control expanded range of the anchor ring supplying lubricating oil of outside shuttle and Nei Suo, can easily be lubricated the adjusting of oil supply amount.
Also have, lubricating oil is mobile in the 1st oil passage 4, and it is along with the increase of not shown grease pump rotating speed, and fuel delivery just increases, their roughly proportional relations.To common industrial sewing machines because this grease pump drives with not shown motor of sewing machine, so compare with the rotating speed of lower shaft, the rotating speed of this grease pump about equally, thereby by with the roughly proportional lubricants capacity that increases of lower shaft rotating speed.
On the other hand, by taking place, thereby become 2 times ratio to increase lubricants capacity from the lubricating oil of aforementioned discoid ejection with the lower shaft rotating speed based on the rotating centrifugal force of lower shaft.Thereby, the lower shaft rotating speed is in case increase, become powerful from the lubricating oil of aforementioned discoid fierce ejection, suppress near flowing of the lubricating oil outer circumferential side in the 1st oil passage 4 intensely, outwards the increase of the lubricants capacity of the anchor ring of shuttle and Nei Suo supply reduces, so the variation of the suitable screw position of lubricating oil quantity delivered is little.
The 3rd figure (A) expression is for oil mass limiting part 26 and the oil mass limiting part 26 of this first embodiment in the past, for regulate the lubricating oil oil mass open and close the draining path adjustment screw allow revolution range.Promptly at the oil mass limiting part body 26A of oil mass limiting part 26 as being under the situation cylindraceous from preceding example, the revolution range of allowing of adjustment screw is that revolution about 0.4 changes when 5000SPM, revolution about 1.1 adjustment screw of changeing when 3000SPM allow that revolution range is very narrow.To this, the adjustment screw of first embodiment allows that revolution range is that revolution about 0.9 changes when 5000SPM, and revolution about 1.9 adjustment screw of changeing when 3000SPM are allowed that revolution range is compared with the past situation and broadened.So be lubricated the fuel-flow control of oil easily.
Correct position in the past that also have the 3rd figure (B) expression first embodiment and adjustment screw.Promptly under the situation of preceding example, the correct position of adjustment screw is revolution about 4.4 commentaries on classics when 5000SPM, the correct position vary within wide limits of revolution about 2.3 adjustment screw of changeing when 3000SPM.To this, the correct position of the adjustment screw of first embodiment is that revolution about 3.6 changes when 5000SPM, revolution when 3000SPM the about 2.5 adjustment screw positions of changeing with compare from preceding example change little.So it is little that the screw correct position of lubricating oil quantity delivered changes.The 4th figure is the figure of expression other embodiments of the invention.
(A) be second embodiment that the large-diameter portion 26B of first embodiment is taken as circular cone shape.
(B) expression is cut into the 3rd circular-arc embodiment to the large-diameter portion 26B shown in first embodiment.The profile of X-X ' part of this figure (B) is shown in the figure (C).It is 2 that the part bigger than this base diameter is equivalent to per approximately 1/4.
(D) expression obtains the 4th littler than the second embodiment base diameter on the contrary embodiment to the large-diameter portion 26B of first embodiment.
(E) expression obtains five embodiment also littler than base diameter to the part of the large-diameter portion 26B of first embodiment.
To above 4 other embodiment, similarly all make lubricating oil accumulate in set a plurality of bights, to obtain and the same effect of first embodiment.
Obtain following effect with the present invention.
(1) aspect the fuel-flow control of shuttle, the oil mass that obtains optimum oil mass that can be wider The revolution range of adjustment screw.
(2) aspect the fuel-flow control of shuttle, even the increase of sewing machine rotating speed also can make outside shuttle The oil mass of oil supply changes little, and can guarantee lubricating other mechanism with pump.
Fig. 1 is the simplified schematic diagram of first embodiment of the invention.
Fig. 2 represents the profile of lubricating oil flow regime among the 1st figure embodiment.
Fig. 3 represent first embodiment and in the past the adjustment screw of embodiment allow the figure of revolution range and suitable screw position.
Fig. 4 represents the sketch of other embodiment of the present invention.
Fig. 5 represents the profile of the full circle swinging shuttle structure of general Sewing machines.
Fig. 6 represents the profile that the lubricating oil fuel-flow control of the full circle swinging shuttle structure of the 4th figure is constructed.
The 1-lower shaft, the 2-bearing shell, 4-the 1st oil passage, the outer shuttle of 5-,
Shuttle in the 16-, 21-the 2nd oil passage, 26-oil mass limiting part,
26A-oil mass limiting part body, 26a-upstream side end face,
32-lubricating oil is supplied with road, 33-draining path, 34-adjustment screw
Claims (1)
1. oil restricting unit of sewing machine, set the oil mass limiting part body that is full of path substantially in the oil passage of the lower shaft that shuttle and revolution drive outside the end is supported, it is characterized in that, dirty relatively part, in the diameter difference of the upstream side part of the oil flow direction of aforementioned oil mass limiting part body, thereby form the different part of centrifugal force when rotating.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62925/94 | 1994-03-31 | ||
| JP06292594A JP3990740B2 (en) | 1994-03-31 | 1994-03-31 | Sewing machine oil quantity limiting member |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1117544A CN1117544A (en) | 1996-02-28 |
| CN1042357C true CN1042357C (en) | 1999-03-03 |
Family
ID=13214346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN95104566A Expired - Fee Related CN1042357C (en) | 1994-03-31 | 1995-03-31 | Oil restricting unit of sewing machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3990740B2 (en) |
| KR (1) | KR950032803A (en) |
| CN (1) | CN1042357C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009095412A (en) * | 2007-10-15 | 2009-05-07 | Brother Ind Ltd | Shuttle hook for sewing machine |
| CN102011276B (en) * | 2010-10-28 | 2012-09-26 | 宁波市鄞州勇耀缝制机械有限公司 | Process for manufacturing rotating shuttle inner shuttle bottom supporting structure |
| CN102031649B (en) * | 2010-12-24 | 2012-10-03 | 宁波市鄞州勇耀缝制机械有限公司 | Outer shuttle of rotating shuttle and manufacturing process thereof |
| WO2017128290A1 (en) * | 2016-01-29 | 2017-08-03 | 中山市旋霸缝纫设备有限公司 | Outer shuttle frame and rotating shuttle |
| CN109487451B (en) * | 2018-11-15 | 2021-01-12 | 东阳市太极精密制造有限公司 | High-capacity rotating shuttle with oil storage cavity and oil supply mechanism comprising rotating shuttle |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01303195A (en) * | 1988-05-31 | 1989-12-07 | Juki Corp | Hook oiling device for sewing machine |
-
1994
- 1994-03-31 JP JP06292594A patent/JP3990740B2/en not_active Expired - Fee Related
-
1995
- 1995-03-30 KR KR1019950007000A patent/KR950032803A/en not_active Application Discontinuation
- 1995-03-31 CN CN95104566A patent/CN1042357C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01303195A (en) * | 1988-05-31 | 1989-12-07 | Juki Corp | Hook oiling device for sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1117544A (en) | 1996-02-28 |
| JP3990740B2 (en) | 2007-10-17 |
| KR950032803A (en) | 1995-12-22 |
| JPH07265573A (en) | 1995-10-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 19990303 Termination date: 20120331 |