CN203144699U - Locating structure of sewing machine main shaft - Google Patents
Locating structure of sewing machine main shaft Download PDFInfo
- Publication number
- CN203144699U CN203144699U CN 201320143163 CN201320143163U CN203144699U CN 203144699 U CN203144699 U CN 203144699U CN 201320143163 CN201320143163 CN 201320143163 CN 201320143163 U CN201320143163 U CN 201320143163U CN 203144699 U CN203144699 U CN 203144699U
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- main shaft
- duct
- shaft sleeve
- rear axle
- casing
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Abstract
The utility model provides a locating structure of a sewing machine main shaft, and belongs to the technical field of sewing. The locating structure of the sewing machine main shaft resolves the technical problem that vibration and noise produced by an existing sewing machine main shaft are large during running. A sewing machine comprises a motor, a main shaft and a machine shell, wherein the motor is fixed on the machine shell, the main shaft is arranged inside the machine shell in a penetrating mode, and an input end of the main shaft is fixedly connected with an output end of the motor. The locating structure comprises a front shaft sleeve, a middle shaft sleeve and a back shaft sleeve, wherein the front shaft sleeve, the middle shaft sleeve and the back shaft sleeve are respectively fixed on the machine shell. An output end of the main shaft is arranged inside the front shaft sleeve in a penetrating mode, the middle portion of the main shaft is arranged inside the middle shaft sleeve in a penetrating mode, the output end of the main shaft is arranged inside the front shaft sleeve in a penetrating mode, the middle portion of the main shaft is arranged inside the middle shaft sleeve in a penetrating mode, the input end of the main shaft is arranged inside the back shaft sleeve in a penetrating mode, and at least one oil discharging hole is further formed in the back shaft sleeve. The locating structure of the sewing machine main shaft has the advantages of being low in vibration and noise, high in stability and the like.
Description
Technical field
The utility model belongs to the stitching process field, relates to a kind of location structure of machine spindle.
Background technology
At present, the motor that uses on the head of sewing machine all is to adopt a side that single finished product motor is installed in independently sewing machine head, and motor shaft and machine spindle are linked together and drive it by shaft coupling and rotate, drive the shank work that moves up and down with the fixing spindle crank of main shaft.
China patent CN202072907U discloses the power bindiny mechanism of the direct drive sewing machine of a kind of servomotor, comprises servomotor, machine spindle, casing; The output of servomotor is fixedlyed connected with the input of machine spindle by shaft coupling; The middle part of machine spindle flexibly connects by collar bush and casing; The input of machine spindle flexibly connects by left bearing and casing; The output of machine spindle flexibly connects by right bearing and casing.This patent is by motor direct-drive, can eliminate when starting and stopping because the caused buffering of belt creep, can make the startup of Sewing machines and stops very precisely and rapidly, can ensure that the intellectuality of Sewing machines realizes simultaneously.
But, the input of above-mentioned machine spindle flexibly connects by left bearing and casing, and bearing is a sub-assembly, global error is big, become flexible easily during operation and produce vibration and noise, thereby cause the vibration of machine spindle, accelerate the fatigue damage of bearing and axle, reduce the operation stability of Sewing machines.
Summary of the invention
The purpose of this utility model is the problems referred to above that exist at existing technology, a kind of location structure of machine spindle is provided, technical problem to be solved in the utility model is vibration and the noise that produces when machine spindle moves by reducing, thereby improve the service life of machine spindle, strengthen the operation stability of Sewing machines.
The purpose of this utility model can realize by following technical proposal:
A kind of location structure of machine spindle, Sewing machines comprises motor, main shaft and casing, described motor is fixed on the casing, described main shaft is arranged in the casing, and the input of this main shaft is connected mutually with the output of described motor, it is characterized in that, this location structure comprises front shaft sleeve, bottom bracket axle and the rear axle housing that is individually fixed on the described casing, the output of described main shaft is arranged in the front shaft sleeve, the middle part of described main shaft is arranged in the bottom bracket axle, the input of described main shaft is arranged in the rear axle housing, and also has at least one outage on the described rear axle housing.
Main shaft passes through front shaft sleeve in the utility model, bottom bracket axle and rear axle housing and casing are rotationally connected, compare with the bearing cooperation with main shaft of the prior art, axle sleeve is a single piece, relative global error is little, can not produce loosening during operation, avoid main shaft that vibration takes place and produce noise, and owing to form one deck oil film between axle sleeve madial wall and the main shaft, can reduce the friction and wear between main shaft and the axle sleeve, improve the service life of machine spindle, strengthen the operation stability of Sewing machines, and offer outage at rear axle housing, the dust that produces when main shaft and rear axle housing are rotatably assorted, greasy dirt is discharged from outage, avoids dust, greasy dirt produces wearing and tearing to main shaft and rear axle housing.
In the location structure of above-mentioned a kind of machine spindle, described rear axle housing comprises a body and runs through the centre bore at these body two ends, described centre bore is a stepped hole, this centre bore comprises duct one and the duct two that is connected, described duct one is positioned at two outer ends, duct and the former internal diameter greater than the latter, also be provided with an oil sealing in the described duct one, described main shaft is arranged in oil sealing and the duct two simultaneously.After duct one is provided with oil sealing, can prevent from that lubricating oil on back bush and the main shaft from overflowing to pollute.
In the location structure of above-mentioned a kind of machine spindle, have oil pocket in the described casing, offer a fuel feed hole on the described body, described fuel feed hole two ends are connected with oil pocket and duct one respectively, and described outage also is connected with duct one.After the body design has fuel feed hole, form an oil circulation with outage, in addition, lubricating oil can also passing hole channel two inner faces and main shaft between the gap enter, between duct two madial walls and main shaft, form an oil film, avoid rear axle housing and main shaft direct friction, simultaneously the greasy dirt of its generation can be discharged in time from outage, avoid dust, greasy dirt that main shaft and rear axle housing are produced wearing and tearing.
In the location structure of above-mentioned a kind of machine spindle, described outage quantity is 2-5, and this outage parallels with described centre bore.The design of outage quantity is between 2-5, and the assurance greasy dirt can be discharged in time, and the parallel distribution with centre bore of outage, has both guaranteed the unobstructed property of blowdown, has reduced the global design development cost of rear axle housing again.
In the location structure of above-mentioned a kind of machine spindle, described front shaft sleeve, bottom bracket axle and rear axle housing all adopt cast iron to make.Adopt castiron axle sleeve not yielding, and intensity is good.
Compared with prior art, the utlity model has following advantage:
1, main shaft is rotationally connected by front shaft sleeve, bottom bracket axle and rear axle housing and casing in the utility model, compare with the bearing cooperation with main shaft of the prior art, axle sleeve is a single piece, and relative global error is little, can not produce looseningly during operation, avoid main shaft that vibration takes place and produce noise;
2, design has fuel feed hole and outage on the rear axle housing body of the present utility model, form an oil circulation, guarantee to have oil film all the time between rear axle housing and the main shaft, avoid rear axle housing and main shaft direct friction, simultaneously the greasy dirt of its generation can be discharged in time from outage, avoid dust, greasy dirt that main shaft and rear axle housing are produced wearing and tearing.
Description of drawings
Fig. 1 is the installation diagram of this machine spindle and casing among the embodiment, motor.
Fig. 2 is the structural representation of rear axle housing among the embodiment.
Among the figure, 1, motor; 2, main shaft; 3, casing; 4, front shaft sleeve; 5, rear axle housing; 6, bottom bracket axle; 7, body; 8, centre bore; 9, the duct one; 10, the duct two; 11, oil sealing; 12, outage.
The specific embodiment
Below be specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figure 1, Sewing machines comprises motor 1, main shaft 2 and casing 3, motor 1 is fixed on the rear end of casing 3, motor 1 in the present embodiment is direct driving motor, main shaft 2 is arranged in this casing 3, and the input of this main shaft 2 is connected mutually with the output of motor 1, and the output of main shaft 2 is connected mutually with the needle bar crank assembly, drives shank and moves up and down.This location structure comprises front shaft sleeve 4, rear axle housing 5 and the bottom bracket axle 6 that is fixed in the casing 3, and the output of main shaft 2 is arranged in the front shaft sleeve 4, and the input of main shaft 2 is arranged in the rear axle housing 5, and the middle part of main shaft 2 is arranged in the bottom bracket axle 6.Wherein, front shaft sleeve 4, rear axle housing 5 and bottom bracket axle 6 all adopt cast iron to make.
As shown in Figure 1 and Figure 2, rear axle housing 5 comprises a body 7 and runs through the centre bore 8 at these body 7 two ends, centre bore 8 is a stepped hole, this centre bore 8 comprises duct 1 and the duct 2 10 that is connected, duct 1 is positioned at 2 10 outer ends, duct and the former internal diameter greater than the latter, also be provided with an oil sealing 11 in the duct 1, main shaft 2 is arranged in oil sealing 11 and the duct 2 10 simultaneously.
As shown in Figure 1 and Figure 2, have an oil pocket in the casing 3, offer 2-5 outage 12 on the rear axle housing body 7, the number of outage 12 is preferably 2 in the present embodiment, two outages 12 and centre bore 8 parallel distributions, and about centre bore 8 symmetries.In addition, also offer fuel feed hole on the body 7, the fuel feed hole two ends are connected with oil pocket and duct 1 respectively, and outage 12 also is connected with duct 1.
The operation principle of this device is as follows: main shaft 2 is by front shaft sleeve 4 in the utility model, rear axle housing 5 and bottom bracket axle 6 are rotationally connected with casing 3, axle sleeve is a single piece, relative global error is little, thereby be difficult for making main shaft 2 to vibrate, and have fuel feed hole and outage 12 on this axle sleeve body 7, both form an oil circulation, guarantee to have oil film all the time between rear axle housing 5 and the main shaft 2, avoid rear axle housing 5 and main shaft 2 direct friction, the greasy dirt of its generation can be discharged from outage 12 in time, avoid dust, greasy dirt produces wearing and tearing to main shaft 2 and rear axle housing 5.
Specific embodiment described herein only is that the utility model spirit is illustrated.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Claims (5)
1. the location structure of a machine spindle, Sewing machines comprises motor (1), main shaft (2) and casing (3), described motor (1) is fixed on the casing (3), described main shaft (2) is arranged in the casing (3), and the input of this main shaft (2) is connected mutually with the output of described motor (1), it is characterized in that, this location structure comprises the front shaft sleeve (4) that is individually fixed on the described casing (3), bottom bracket axle (6), and rear axle housing (5), the output of described main shaft (2) is arranged in the front shaft sleeve (4), the middle part of described main shaft (2) is arranged in the bottom bracket axle (6), the input of described main shaft (2) is arranged in the rear axle housing (5), and also has at least one outage (12) on the described rear axle housing (5).
2. the location structure of a kind of machine spindle according to claim 1, it is characterized in that, described rear axle housing (5) comprises a body (7) and runs through the centre bore (8) at this body (7) two ends, described centre bore (8) is a stepped hole, this centre bore (8) comprises duct one (9) and the duct two (10) that is connected, described duct one (9) is positioned at two (10) outer ends, duct and the former internal diameter greater than the latter, also be provided with an oil sealing (11) in the described duct one (9), described main shaft (2) is arranged in oil sealing (11) and the duct two (10) simultaneously.
3. the location structure of a kind of machine spindle according to claim 2, it is characterized in that, described casing has oil pocket in (3), offer a fuel feed hole on the described body (7), described fuel feed hole two ends are connected with oil pocket and duct one (9) respectively, and described outage (12) also is connected with duct one (9).
4. according to the location structure of claim 2 or 3 described a kind of machine spindles, it is characterized in that described outage (12) quantity is 2-5, and this outage (12) parallels with described centre bore (8).
5. according to the location structure of claim 1 or 2 or 3 described a kind of machine spindles, it is characterized in that described front shaft sleeve (4), bottom bracket axle (6) and rear axle housing (5) all adopt cast iron to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320143163 CN203144699U (en) | 2013-03-27 | 2013-03-27 | Locating structure of sewing machine main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320143163 CN203144699U (en) | 2013-03-27 | 2013-03-27 | Locating structure of sewing machine main shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203144699U true CN203144699U (en) | 2013-08-21 |
Family
ID=48972241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320143163 Expired - Lifetime CN203144699U (en) | 2013-03-27 | 2013-03-27 | Locating structure of sewing machine main shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203144699U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106835525A (en) * | 2017-02-23 | 2017-06-13 | 湖南凯斯机械股份有限公司 | A kind of rear end is the high accuracy head of sewing machine of circle convex platform formula structure |
-
2013
- 2013-03-27 CN CN 201320143163 patent/CN203144699U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106835525A (en) * | 2017-02-23 | 2017-06-13 | 湖南凯斯机械股份有限公司 | A kind of rear end is the high accuracy head of sewing machine of circle convex platform formula structure |
| CN106835525B (en) * | 2017-02-23 | 2019-08-02 | 湖南凯斯机械股份有限公司 | A kind of rear end is the high-precision head of sewing machine of circle convex platform formula structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130821 |
|
| CX01 | Expiry of patent term |