CN112176554A - Lower machine head of sewing machine - Google Patents
Lower machine head of sewing machine Download PDFInfo
- Publication number
- CN112176554A CN112176554A CN202010950652.7A CN202010950652A CN112176554A CN 112176554 A CN112176554 A CN 112176554A CN 202010950652 A CN202010950652 A CN 202010950652A CN 112176554 A CN112176554 A CN 112176554A
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- China
- Prior art keywords
- driven wheel
- sewing machine
- motor
- mounting seat
- head
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
- D05B57/30—Driving-gear for loop takers
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention belongs to the technical field of sewing equipment, relates to a lower machine head of a sewing machine, and solves the problems of large occupied space, unreasonable layout, low running stability and the like of the lower machine head of the existing sewing machine. This aircraft nose down includes mount pad and motor, rotates on the mount pad to be provided with from the driving wheel, is connected with the shuttle seat soon from the driving wheel, has seted up the inner chamber in the follow driving wheel, has the conductive slip ring in the inner chamber, and the motor is connected with from the driving wheel through transmission assembly. The motor drives the driven wheel to rotate through the transmission assembly, so that the rotating shuttle seat is driven to rotate and is matched with the needle rod in a rotating mode. Because in this application, to lead electrical slip ring design in the inner chamber from the driving wheel, can effectively save space for the aircraft nose is whole more compact down, improves the rationality of overall arrangement.
Description
Technical Field
The invention belongs to the technical field of sewing equipment, and relates to a lower machine head of a sewing machine.
Background
The needle bar of the traditional sewing machine only moves up and down, and the rotating shuttle on the machine base is only fixed at the installation position and rotates. With the increasing of various demands and the development of the research and development technology of sewing equipment, a sewing machine with head rotation or needle bar rotation is also in motion, and the needle bar of the sewing machine can do 360-degree rotation motion in addition to up-and-down motion. When the needle bar moves, the rotating shuttle and the needle bar synchronously rotate, namely the rotating shuttle rotates along with the rotating shuttle shaft and simultaneously rotates 360 degrees along with the rotating shuttle seat.
For example, the lower head of the independently driven rotary automatic sewing machine disclosed in the chinese patent CN103981648A is installed right below the upper head, the lower head includes a bottom thread rotating system and a bottom shuttle system which are independently driven, the bottom shuttle system is arranged on the upper part of the bottom thread rotating system; the bottom line rotating system comprises a conductive slip ring, a bottom line motor, a gearbox and a rotating shaft, wherein the conductive slip ring is arranged below the gearbox through a slip ring fixing seat, and the bottom line motor is fixed on the side part of the gearbox through a motor receiving disc; the conductive slip ring comprises a slip ring body and a fixed support, a rotating shaft penetrates through the gearbox and is connected with the slip ring body of the conductive slip ring, and the rotating shaft can drive the slip ring body to rotate in the fixed support; the upper end of the rotating shaft is provided with a flange plate, the bottom shuttle system is fixed on the flange plate, the bottom line motor drives the rotating shaft to rotate through the gearbox, and the rotating shaft drives the bottom shuttle system to rotate 360 degrees in any direction.
However, the conductive slip ring of the lower head is disposed below the transmission case and exposed outside the transmission case, thereby occupying a large assembly space, and the layout is not reasonable enough for a sewing machine which is inherently tight in assembly space.
Disclosure of Invention
The invention aims to solve the problems in the prior art, and provides a lower machine head of a sewing machine, which aims to solve the technical problems that: how to reduce the occupied assembly space of this sewing machine's lower aircraft nose for whole more compact, the overall arrangement is more reasonable.
The purpose of the invention can be realized by the following technical scheme:
the lower machine head of the sewing machine is characterized by comprising a mounting seat and a motor, wherein a driven wheel is rotatably arranged on the mounting seat, the driven wheel is connected with a rotating shuttle seat, an inner cavity is formed in the driven wheel, a conductive sliding ring is arranged in the inner cavity, and the motor is connected with the driven wheel through a transmission assembly.
The working principle is as follows: the motor drives the driven wheel to rotate through the transmission assembly, so that the rotating shuttle seat is driven to rotate and is matched with the needle rod in a rotating mode. Because in this application, to lead electrical slip ring design in the inner chamber from the driving wheel, can effectively save space for the aircraft nose is whole more compact down, improves the rationality of overall arrangement.
In the lower head of the sewing machine, the conductive slip ring comprises a rotor and a stator which are matched, the rotor is fixed on the mounting seat, and the stator is circumferentially fixed with the driven wheel through a positioning mechanism. When the driven wheel rotates, the rotor is still fixed on the rotating shuttle seat, and the stator of the conductive slip ring can synchronously rotate along with the driven wheel so as to rotate relative to the rotor.
In the lower head of the sewing machine, as a scheme, the positioning mechanism comprises a limiting block arranged on the stator, a limiting groove is formed in the side wall of the inner cavity of the driven wheel along the vertical direction, and the limiting block is embedded in the limiting groove. After the design has stopper and spacing groove, when the follow driving wheel is rotatory, can drive the stator synchronous revolution of conducting slip ring.
In the lower head of the sewing machine, the inner end of the limiting block is fixed on the upper end face of the stator, the outer end of the limiting block is arc-shaped, and the cross section of the limiting groove is arc-shaped.
In the lower head of the sewing machine, the mounting seat is provided with a shaft hole along the vertical direction, the upper end and the lower end of the shaft hole are respectively provided with the upper bearing and the lower bearing, the driven wheel is positioned in the shaft hole, and the upper end and the lower end of the driven wheel respectively penetrate through the upper bearing and the lower bearing. The driven wheel is designed in the shaft hole of the mounting seat, so that the assembly space can be further saved, the lower machine head is integrally more compact, and the operation is more stable.
In the lower head of the sewing machine, the lower end of the driven wheel is connected with the check ring, and the upper surface of the check ring is attached to the lower surface of the lower bearing. After the retainer ring is designed, the driven wheel can be prevented from axially bouncing, and the running stability of the driven wheel is improved.
In the lower head of the sewing machine, the lower end of the shaft hole is fixed with the bottom plate, and the lower end of the rotor is fixed with the bottom plate.
In the lower head of the sewing machine, a bushing is arranged between the bottom plate and the mounting seat.
In the lower head of the sewing machine, the transmission assembly comprises a driving wheel fixed on an output shaft of the motor, gear teeth are formed in the outer side wall of the driven wheel, and the driving wheel is connected with the driven wheel through a synchronous belt. The motor rotates to drive the driving wheel to rotate, so that the synchronous belt drives the driven wheel to rotate, the rotating shuttle seat is finally driven to rotate, and meanwhile, the stator of the conductive slip ring in the driven wheel is driven to rotate relative to the rotor.
In the lower head of the sewing machine, the mounting seat is provided with a cavity communicated with the shaft hole along the horizontal direction, the motor is fixed on the lower surface of the mounting seat along the vertical direction, and the output shaft of the motor is inserted in the cavity.
In the lower head of the sewing machine, the mounting seat is provided with an upper through hole and a lower through hole which are communicated with the cavity along the vertical direction, the output shaft of the motor is inserted into the cavity through the lower through hole, the bearing sleeve is arranged at the upper through hole of the mounting seat, the motor bearing is arranged in the bearing sleeve, and the upper end of the output shaft of the motor is connected with the motor bearing.
In the lower head of the sewing machine, one end of the cavity is communicated with the shaft hole, the other end of the cavity penetrates through the mounting seat to form an opening, and a cover plate capable of covering the opening is arranged on the mounting seat. Due to the design, the installation of all components in the installation seat is convenient.
Compared with the prior art, the invention has the following advantages:
in this application, to lead electrical slip ring design in the inner chamber from the driving wheel, can effectively save space for the aircraft nose is whole more compact down, improves the rationality of overall arrangement.
Drawings
FIG. 1 is a schematic view of the lower head of the sewing machine.
Fig. 2 is an exploded view of the lower head of the present sewing machine.
Fig. 3 is a schematic structural diagram of the transmission assembly.
Fig. 4 is a bottom view of the present mount.
Fig. 5 is a schematic structural view of the present driven wheel.
In the figure, 1, a mounting seat; 2. a motor; 3. a rotating shuttle seat; 4. an inner cavity; 5. a conductive slip ring; 6. a transmission assembly; 7. a rotor; 8. a stator; 9. a positioning mechanism; 10. a limiting block; 11. a limiting groove; 12. a shaft hole; 13. an upper bearing; 14. a lower bearing; 15. a retainer ring; 16. a base plate; 17. a bushing; 18. a driving wheel; 19. gear teeth; 20. a synchronous belt; 21. a cavity; 22. an upper through hole; 23. a lower through hole; 24. a bearing housing; 25. a motor bearing; 26. an opening; 27. a cover plate; 28. a driven wheel.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1 and 2, the lower head of the sewing machine comprises a mounting seat 1 and a motor 2, a driven wheel 28 is rotatably arranged on the mounting seat 1, the driven wheel 28 is connected with a rotating shuttle seat 3, an inner cavity 4 is formed in the driven wheel 28, a conductive sliding ring 5 is arranged in the inner cavity 4, and the motor 2 is connected with the driven wheel 28 through a transmission assembly 6.
In this embodiment, the upper end surface of the driven wheel 28 directly forms a platform connected to the rotating shuttle seat 3, which is simpler in structure and has good transmission stability. Of course, the driven wheel 28 is not limited to the embodiment and the drawings described in the specification, and changes or adjustments of the relative relationship thereof are considered to be within the scope of the present invention without substantial technical changes.
Specifically, in the present embodiment, the conductive slip ring 5 includes a rotor 7 and a stator 8, which are engaged with each other, the rotor 7 is fixed to the mounting base 1, and the stator 8 is circumferentially fixed to the driven wheel 28 by a positioning mechanism 9. When the driven wheel 28 rotates, the rotor 7 is still fixed on the rotating shuttle seat 3, and the stator 8 of the conductive slip ring 5 can rotate synchronously with the driven wheel 28, so as to rotate relative to the rotor 7.
In the positioning mechanism 9, it is preferable to circumferentially fix the stator 8 and the driven wheel 28 in the present embodiment, but a solution of directly fixing the stator 8 and the driven wheel 28 is not excluded, because the solution of fixing the two also belongs to one of circumferential positioning, only circumferential positioning is adopted, and the assembly and disassembly are convenient, and the specific structure is as follows:
preferably, as shown in fig. 2 and 5, the positioning mechanism 9 includes a limiting block 10 disposed on the stator 8, a limiting groove 11 is disposed on a sidewall of the inner cavity 4 of the driven wheel 28 along a vertical direction, and the limiting block 10 is embedded in the limiting groove 11. Preferably, the inner end of the limiting block 10 is fixed to the upper end face of the stator 8, the outer end of the limiting block 10 is arc-shaped, and the cross section of the limiting groove 11 is arc-shaped. After the design has stopper 10 and spacing groove 11, when following the rotation of driving wheel 28, can drive the synchronous revolution of stator 8 of conductive sliding ring 5.
It should be noted that the shape, size and installation position of the stopper 10 and the stopper groove 11 in the present application are not limited to those described in the embodiments and the drawings of the specification, and the relative relationship thereof may be changed or adjusted without substantial technical change, and thus, the scope of the present invention may be implemented.
In addition, the positioning mechanism 9 may also adopt a scheme that a limit block 10 is designed on the cavity wall of the inner cavity 4 of the driven wheel 28, a corresponding limit groove 11 is designed on the stator 8, or other schemes capable of circumferentially positioning the stator.
As shown in fig. 2, in order to implement the installation of the driven wheel, in the embodiment, the installation base 1 is provided with a shaft hole 12 along the vertical direction, an upper bearing 13 and a lower bearing 14 are respectively arranged at the upper end and the lower end of the shaft hole 12, the driven wheel 28 is located in the shaft hole 12, and the upper end and the lower end of the driven wheel 28 respectively penetrate through the upper bearing 13 and the lower bearing 14.
In order to avoid the driven pulley 28 from axially moving, preferably, a retainer ring 15 is connected to the lower end of the driven pulley 28, and the upper surface of the retainer ring 15 abuts against the lower surface of the lower bearing 14, thereby improving the operation stability of the driven pulley 28.
In order to fix the rotor 7 and the mounting base 1, in the embodiment, a bottom plate 16 is fixed at the lower end of the shaft hole 12, and the lower end of the rotor 7 is fixed with the bottom plate 16. A bushing 17 is arranged between the bottom plate 16 and the mounting base 1.
It should be noted here that the fixation between the rotor 7 and the mounting base 1 may be a direct fixation, or an indirect fixation through the bottom plate 16, or of course, other connection methods may be adopted, and the relative relationship may be changed or adjusted without substantial technical change, and thus, the present invention is considered to be within the scope of the implementation of the present invention.
As shown in fig. 2 and 3, in this embodiment, the transmission assembly 6 includes a driving wheel 18 fixed on the output shaft of the motor 2, gear teeth 19 are formed on the outer side wall of a driven wheel 28, and the driving wheel 18 is connected to the driven wheel 28 through a synchronous belt 20.
Of course, as another scheme, a gear or the like can be adopted for transmission. The transmission wheel 28 may also be in the form of a transmission box as in the patent CN103981648A mentioned in the background, and in this case, the transmission wheel 28 may be regarded as a part of the structure of the transmission box connected to the rotating shaft, i.e., the transmission wheel 28 is not limited to the form similar to the pulley described in the embodiment and the drawings of the specification, and it can be adjusted accordingly according to the actual needs, but it is also within the scope of the present invention.
In order to further improve the overall compactness of the lower handpiece, as shown in fig. 1 and 2, in the present embodiment, the mounting base 1 is provided with a cavity 21 communicating with the shaft hole 12 along the horizontal direction, the motor 2 is fixed on the lower surface of the mounting base 1 along the vertical direction, and the output shaft of the motor 2 is inserted into the cavity 21.
As further preferred, as shown in fig. 1, 2, and 4, the mounting base 1 is provided with an upper through hole 22 and a lower through hole 23 along a vertical direction, the upper through hole 22 and the lower through hole 23 are communicated with the cavity 21, the output shaft of the motor 2 is inserted into the cavity 21 through the lower through hole 23, the upper through hole 22 of the mounting base 1 is provided with a bearing sleeve 24, a motor bearing 25 is disposed in the bearing sleeve 24, and the upper end of the output shaft of the motor 2 is connected with the motor bearing 25. One end of the cavity 21 is communicated with the shaft hole 12, the other end of the cavity 21 penetrates through the mounting seat 1 to form an opening 26, and a cover plate 27 capable of covering the opening 26 is arranged on the mounting seat 1.
The working principle of the invention is as follows: the motor 2 rotates to drive the driving wheel 18 to rotate, so that the driven wheel 28 is driven to rotate through the synchronous belt 20, the rotating shuttle seat 3 is finally driven to rotate, and meanwhile, the stator 8 of the conductive slip ring 5 in the driven wheel 28 is driven to rotate relative to the rotor 7.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (10)
1. The lower machine head of the sewing machine is characterized by comprising a mounting seat (1) and a motor (2), wherein a driven wheel (28) is rotatably arranged on the mounting seat (1), the driven wheel (28) is connected with a rotating shuttle seat (3), an inner cavity (4) is formed in the driven wheel (28), a conductive sliding ring (5) is arranged in the inner cavity (4), and the motor (2) is connected with the driven wheel (28) through a transmission assembly (6).
2. Lower head of a sewing machine according to claim 1, characterized in that the conductive slip ring (5) comprises a rotor (7) and a stator (8) cooperating, the rotor (7) being fixed to the mounting (1), the stator (8) being fixed circumferentially to the driven wheel (28) by means of a positioning mechanism (9).
3. The lower head of a sewing machine according to claim 2, characterized in that the positioning mechanism (9) comprises a limiting block (10) arranged on the stator (8), a limiting groove (11) is arranged on the side wall of the inner cavity (4) of the driven wheel (28) along the vertical direction, and the limiting block (10) is embedded in the limiting groove (11).
4. The lower head of the sewing machine according to claim 1, 2 or 3, characterized in that the mounting seat (1) is provided with a shaft hole (12) along a vertical direction, the upper end and the lower end of the shaft hole (12) are respectively provided with an upper bearing (13) and a lower bearing (14), the driven wheel (28) is positioned in the shaft hole (12), and the upper end and the lower end of the driven wheel (28) respectively penetrate through the upper bearing (13) and the lower bearing (14).
5. Lower head for a sewing machine according to claim 4, characterized in that a collar (15) is connected to the lower end of the driven wheel (28), the upper surface of the collar (15) being in abutment with the lower surface of the lower bearing (14).
6. Lower head for a sewing machine according to claim 4, characterized in that a base plate (16) is fixed at the lower end of said axial hole (12), and the lower end of said rotor (7) is fixed to said base plate (16).
7. Lower head of a sewing machine according to claim 6, characterized in that a bushing (17) is provided between the base plate (16) and the mounting seat (1).
8. The lower head of a sewing machine according to claim 1, 2 or 3, characterized in that the transmission assembly (6) comprises a driving wheel (18) fixed on the output shaft of the motor (2), the outer side wall of the driven wheel (28) is provided with gear teeth (19), and the driving wheel (18) is connected with the driven wheel (28) through a synchronous belt (20).
9. The lower head of the sewing machine according to claim 1, 2 or 3, characterized in that the mounting seat (1) is provided with a cavity (21) communicated with the shaft hole (12) along the horizontal direction, the motor (2) is fixed on the lower surface of the mounting seat (1) along the vertical direction, and the output shaft of the motor (2) is inserted into the cavity (21).
10. Lower head according to claim 9, wherein one end of said cavity (21) is in communication with said axial hole (12), the other end of said cavity (21) penetrates said mounting seat (1) to form an opening (26), and said mounting seat (1) is provided with a cover plate (27) capable of covering said opening (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010950652.7A CN112176554A (en) | 2020-09-10 | 2020-09-10 | Lower machine head of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010950652.7A CN112176554A (en) | 2020-09-10 | 2020-09-10 | Lower machine head of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112176554A true CN112176554A (en) | 2021-01-05 |
Family
ID=73920706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010950652.7A Pending CN112176554A (en) | 2020-09-10 | 2020-09-10 | Lower machine head of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112176554A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120291683A1 (en) * | 2011-03-16 | 2012-11-22 | Sunstar Co., Ltd. | Sewing machine and control method for driving the same |
| CN203256454U (en) * | 2013-05-08 | 2013-10-30 | 陈忠前 | Industrial sewing machine |
| CN103981649A (en) * | 2014-05-13 | 2014-08-13 | 诸暨锦和缝制机械有限公司 | Upper machine head of independently-driven rotary type automatic sewing device |
| CN104141201A (en) * | 2013-05-08 | 2014-11-12 | 陈忠前 | Industrial sewing machine |
| CN206015252U (en) * | 2016-08-31 | 2017-03-15 | 宁波舒普机电科技有限公司 | A kind of feeding driving structure of template sewing machine |
| CN209523003U (en) * | 2019-01-28 | 2019-10-22 | 浙江耐拓机电科技有限公司 | A kind of needle bar of sewing machine and rotating shuttle synchronous rotary mechanism |
-
2020
- 2020-09-10 CN CN202010950652.7A patent/CN112176554A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120291683A1 (en) * | 2011-03-16 | 2012-11-22 | Sunstar Co., Ltd. | Sewing machine and control method for driving the same |
| CN203256454U (en) * | 2013-05-08 | 2013-10-30 | 陈忠前 | Industrial sewing machine |
| CN104141201A (en) * | 2013-05-08 | 2014-11-12 | 陈忠前 | Industrial sewing machine |
| CN103981649A (en) * | 2014-05-13 | 2014-08-13 | 诸暨锦和缝制机械有限公司 | Upper machine head of independently-driven rotary type automatic sewing device |
| CN206015252U (en) * | 2016-08-31 | 2017-03-15 | 宁波舒普机电科技有限公司 | A kind of feeding driving structure of template sewing machine |
| CN209523003U (en) * | 2019-01-28 | 2019-10-22 | 浙江耐拓机电科技有限公司 | A kind of needle bar of sewing machine and rotating shuttle synchronous rotary mechanism |
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Application publication date: 20210105 |