CN204939822U - Needle bar of sewing machine synchronous rotating mechanism - Google Patents
Needle bar of sewing machine synchronous rotating mechanism Download PDFInfo
- Publication number
- CN204939822U CN204939822U CN201520193950.0U CN201520193950U CN204939822U CN 204939822 U CN204939822 U CN 204939822U CN 201520193950 U CN201520193950 U CN 201520193950U CN 204939822 U CN204939822 U CN 204939822U
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- China
- Prior art keywords
- shank
- bearing
- sewing machine
- rotating mechanism
- sewing
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- Expired - Fee Related
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Abstract
The utility model relates to sewing machine technique field, especially needle bar of sewing machine synchronous rotating mechanism is related to, comprise the shank for inserting slit swage be installed on upper casing, and the shank motor driving shank to rotate, the upper end of shank wears connection one rotating seat, and in rotating seat be provided with clamping shank clutch shaft bearing, when shank moves up and down and clutch shaft bearing form rolling friction; Rotating seat is located on shank sleeve by the second bearing group, and shank sleeve and upper casing are fixed together, and rotating seat is connected with shank motor-driven.The utility model uses two bearing clamping shanks, ensure transmission gapless, sliding friction is improved to rolling friction, reduce frictional force, and bearing block is installed on synchronous belt wheel base, synchronous belt wheel base and shank upper bush are installed together by bearing, ensure that the concentricity of rotatable parts and shank; Structure is simple, and it is ingenious, reasonable to design, and can greatly improve outward appearance and the sewing quality of product, improves the qualification rate of product.
Description
Technical field
The utility model relates to sewing machine technique field, especially relate to a kind of can matching with the shuttle race synchronous rotating mechanism on Sewing machines and carry out synchronous rotary, can synchronous rotary to realize shuttle race and shank, make the suture direction of sewing needle and set the stitching that will make to remain consistent shank synchronous rotating mechanism.
Background technology
Traditional sewing mechanism generally comprises upper casing and lower casing, be installed in the upper spindle motor on upper casing and needle bar mechanism, be located in the upper axle be in transmission connection with upper spindle motor and needle bar mechanism respectively in upper casing, and the lower spindle motor be installed on lower casing and shuttle race mechanism, be located in the lower shaft be also in transmission connection with lower spindle motor and shuttle race respectively in lower casing to form, upper axle is driven to rotate by upper spindle motor, upper axle drives needle bar mechanism to move up and down the sewing action up and down realizing sewing needle, lower shaft is driven to rotate by lower spindle motor, this lower shaft drives shuttle race mechanism kinematic to carry out sewing operation to coordinate sewing needle, and this type of sewing mechanism is when sewing, shank can not realize carrying out according to the stitching made the rotation that adapts simultaneously, so that affect by push-and-pull during feed mechanism feeding, bottom line and upper thread are subject to force unbalance when hooking line position and sewing up, the suture direction of sewing needle can not be consistent with setting the stitching that will make, the stitching sewed up finally is caused to occur loose, irregular, the defect such as uneven.Especially when making irregular stitching; the suture direction of sewing needle is difficult to and sets the stitching made and remain consistent; causing finally making the stitching obtained can be very loose, irregular, uneven; can not fit like a glove with setting the stitching that will make; the serious aesthetic property affecting the outward appearance of product and sewing quality; affect the total quality of product, cause the qualification rate of product lower.Have the stitching that the suture direction of sewing needle and setting can be made to make subsequently and remain consistent shank synchronous rotating mechanism, its structure is, motor and motor cabinet are installed on casing, special U-shaped motor shaft customized, shank both sides do flat, shank slides up and down in motor shaft inside, motor shaft rotates and drives shank to rotate, because shank and motor shaft are sliding friction, and motor shaft drives shank to rotate, there is the pressure of a radial direction, therefore in use, shank and motor shaft easily occur stuck, the phenomenon burnt to death, and this structure shank and motor shaft gap larger, a whole set of structure precision is lower, lubrication is refueled comparatively difficult.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned defect of the prior art, there is provided a kind of can rotate making shank in material process, and can match with the shuttle race synchronous rotating mechanism on sewing mechanism and realize shank and shuttle race energy synchronous rotary, thus ensure upper thread and the bottom line stress balance when sewing, the stitching that the suture direction of sewing needle and setting are made remains consistent shank synchronous rotating mechanism, it ensures transmission gapless, and sliding friction is improved to rolling friction, greatly reduce frictional force.
For achieving the above object, the technical scheme that provides of the utility model is as follows:
Needle bar of sewing machine synchronous rotating mechanism, comprise the shank for assembling eedle be assemblied on upper casing, and the stepper motor driving shank to rotate, the upper end of described shank wears connection one and rotates synchromesh gear, and in rotate synchromesh gear be provided with clamping shank Limit Bearing, when shank moves up and down and Limit Bearing form rolling friction; Described rotation synchromesh gear is located on shank sleeve by bearing mounting seat group, and shank sleeve and upper casing are fixed together, and rotation synchromesh gear and stepper motor are in transmission connection.
The face that described shank contacts with clutch shaft bearing is the face of scabbling, and clutch shaft bearing is in pairs to folder shank.
Described rotating seat is synchronous belt wheel base, connects shank motor by Timing Belt.
The beneficial effect of shank synchronous rotating mechanism described in the utility model is: use two bearing clamping shanks, ensure transmission gapless, sliding friction is improved to rolling friction, greatly reduce frictional force, and bearing block is installed on synchronous belt wheel base, synchronous belt wheel base and shank upper bush are installed together by bearing, ensure that the concentricity of rotatable parts and shank.Shank rotatable parts are connected with drive motors by Timing Belt, and a whole set of transmission, for flexibly connecting, eliminates drive noise.Achieve shank can rotate when sewing mechanism makes material, when this shank synchronous rotating mechanism is applied on sewing mechanism, can match with shuttle race synchronous rotating mechanism and realize synchronous rotary, thus the stitching making the suture direction of sewing needle and setting make remains consistent, the stitching obtained of therefore sewing has the advantages such as tight, neat, even, the push-and-pull that effective solution feed mechanism produces when feeding is on the impact of bottom line and upper thread, especially when making irregular stitching, by shank and shuttle race synchronous rotary, make upper thread and the bottom line stress balance when hooking line position and sewing up, the stitching that suture direction and the setting of sewing needle are made remains consistent, thus ensure to make the stitching that obtains can very tight, neatly, evenly, the stitching made with setting fits like a glove, there is structure simple, design ingenious, rationally, outward appearance and the sewing quality of product can be greatly improved, improve the advantages such as the qualification rate of product.
accompanying drawing illustrates:
Accompanying drawing 1 is the utility model preferred embodiment structural representation;
Accompanying drawing 2 is the structure side view of Fig. 1 embodiment.
detailed description of the invention:
Be described further below with reference to the technique effect of accompanying drawing to design of the present utility model, concrete structure and generation, to understand the purpose of this utility model, characteristic sum effect fully.
Consult shown in Fig. 1,2, it is preferred embodiment schematic diagram of the present utility model, the utility model is about a kind of needle bar of sewing machine synchronous rotating mechanism, comprise the shank 2 for assembling eedle be installed on upper casing 1, and the stepper motor 3 driving shank 2 to rotate, the upper end of described shank 2 wears connection one and rotates synchromesh gear 4, and in rotate synchromesh gear 4 be provided with clamping shank 2 Limit Bearing 5, when shank 2 moves up and down and Limit Bearing 5 form rolling friction.In the present embodiment, the face that described shank 2 contacts with Limit Bearing 5 is the face of scabbling, and Limit Bearing 5 is in pairs to folder shank 2; Syndeton is good, and Limit Bearing 5 and rotation synchromesh gear 4 synchronous rotary, drive shank 2 to rotate, form rolling friction simultaneously with the shank 2 moved up and down; This structure can make shank 2 match with shuttle race synchronous rotating mechanism and realize synchronous rotary, thus the stitching that the suture direction of sewing needle and setting are made remains consistent, and the stitching obtained of therefore sewing has the advantages such as tight, neat, even; The push-and-pull that effective solution feed mechanism produces when feeding is on the impact of bottom line and upper thread; especially when making irregular stitching; by shank and shuttle race synchronous rotary; make upper thread and the bottom line stress balance when hooking line position and sewing up; the stitching that suture direction and the setting of sewing needle are made remains consistent; thus ensure to make the stitching that obtains can very tight, neat, even, and set the stitching made and fit like a glove.In the utility model, described rotating seat 4 is located on shank sleeve 7 by 6 groups, the second bearing, and shank sleeve 7 and upper casing 1 are fixed together, and rotating seat 4 and stepper motor 3 are in transmission connection.In the present embodiment, described rotating seat 4 is synchronous belt wheel base, connects stepper motor 3 by Timing Belt 8.
The beneficial effect of shank synchronous rotating mechanism described in the utility model is: use two clutch shaft bearings 5 to clamp shank 2, ensure transmission gapless, sliding friction is improved to rolling friction, greatly reduce frictional force, and the bearing block installed for clutch shaft bearing 5 is installed on synchronous belt wheel base, synchronous belt wheel base and shank upper bush 7 are installed together by bearing mounting base, ensure that the concentricity of rotatable parts and shank.Shank rotatable parts are connected with drive motors by Timing Belt, and a whole set of transmission, for flexibly connecting, eliminates drive noise.
Certainly; more than in conjunction with embodiment, the utility model is elaborated; only for technical conceive of the present utility model and feature are described; its object is to allow person skilled in the art understand content of the present utility model and to be implemented; all equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed in protection domain of the present utility model.
Claims (3)
1. needle bar of sewing machine synchronous rotating mechanism, comprise the shank (2) for assembling eedle be assemblied on upper casing (1), and the stepper motor (3) driving shank (2) to rotate, it is characterized in that: the upper end of described shank (2) wears connection one and rotates synchromesh gear (4), and in rotate synchromesh gear (4) be provided with clamping shank (2) Limit Bearing (5), when shank (2) moves up and down and Limit Bearing (5) form rolling friction; Described rotation synchromesh gear (4) is located on shank sleeve (7) by bearing mounting seat (6) group, and shank sleeve (7) and upper casing (1) are fixed together, and rotates synchromesh gear (4) and is in transmission connection with stepper motor (3).
2. needle bar of sewing machine synchronous rotating mechanism according to claim 1, is characterized in that: the face that described shank (2) contacts with Limit Bearing (5) is the face of scabbling, and Limit Bearing (5) is in pairs to folder shank (2).
3. needle bar of sewing machine synchronous rotating mechanism according to claim 1, is characterized in that: described rotation synchromesh gear (4) is synchronous belt wheel base, connects stepper motor (3) by Timing Belt (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520193950.0U CN204939822U (en) | 2015-04-02 | 2015-04-02 | Needle bar of sewing machine synchronous rotating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520193950.0U CN204939822U (en) | 2015-04-02 | 2015-04-02 | Needle bar of sewing machine synchronous rotating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204939822U true CN204939822U (en) | 2016-01-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520193950.0U Expired - Fee Related CN204939822U (en) | 2015-04-02 | 2015-04-02 | Needle bar of sewing machine synchronous rotating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204939822U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727032A (en) * | 2015-04-02 | 2015-06-24 | 东莞市名菱工业自动化科技有限公司 | Sewing machine needle bar synchronous rotation mechanism |
-
2015
- 2015-04-02 CN CN201520193950.0U patent/CN204939822U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104727032A (en) * | 2015-04-02 | 2015-06-24 | 东莞市名菱工业自动化科技有限公司 | Sewing machine needle bar synchronous rotation mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160106 Termination date: 20190402 |