CN112359504A - Lower feeding mechanism of sewing machine - Google Patents
Lower feeding mechanism of sewing machine Download PDFInfo
- Publication number
- CN112359504A CN112359504A CN202011075787.XA CN202011075787A CN112359504A CN 112359504 A CN112359504 A CN 112359504A CN 202011075787 A CN202011075787 A CN 202011075787A CN 112359504 A CN112359504 A CN 112359504A
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- China
- Prior art keywords
- sewing machine
- transmission shaft
- gear
- feeding mechanism
- spur gear
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- Pending
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/10—Electrical or electromagnetic drives
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a lower feeding mechanism of a sewing machine, which relates to the field of lower feeding mechanisms of sewing machines and comprises a transmission shaft, wherein the upper end of the transmission shaft is connected with an output shaft of a driving motor of the sewing machine, the lower end of the transmission shaft is fixedly connected with a horizontally arranged face gear, and a straight toothed spur gear which is meshed with the face gear and can rotate in a vertical plane is arranged below the face gear. The upper end of the transmission shaft is provided with a coupler, and the upper end of the transmission shaft is connected with an output shaft of a driving motor of the sewing machine through the coupler. The upper end of the transmission shaft is provided with a coupler, and the upper end of the transmission shaft is connected with an output shaft of a driving motor of the sewing machine through the coupler. And the inner surface of the shell is fixedly provided with a bearing seat at a position corresponding to the transmission shaft, and the transmission shaft is connected with the bearing seat through a bearing. The present invention can solve the problems proposed in the background art.
Description
Technical Field
The invention relates to the field of lower feeding mechanisms of sewing machines, in particular to a lower feeding mechanism of a sewing machine.
Background
The high-head vehicle is a sewing machine controlled by a microcomputer, and a lower feeding mechanism of the sewing machine is arranged on the high-head vehicle and is used for driving a cloth cover to move.
The existing lower feeding mechanism of the sewing machine transmits the power output by an output shaft of a driving motor of the sewing machine to the lower feeding mechanism through a transmission shaft, and then outputs the power to a metal feeding gear through a series of complex transmission devices, wherein the complex transmission devices use bevel gears for transmission. The existing lower feeding mechanism has the following defects:
1. the transmission device in the existing lower feeding mechanism is complex, so that the whole volume of the lower feeding mechanism is large, the flexibility is poor, the failure rate is high, and the sewing of the upper can not be carried out.
2. In the transmission process of the bevel gears, the cone tops of the two mutually meshed bevel gears are difficult to coincide, and the bevel gears have axial errors, so that the serious unbalance loading phenomenon is caused.
3. The existing lower feeding mechanism cannot ensure fixed transmission ratio transmission in the process of bevel gear transmission, and noise and vibration are large in the transmission process.
4. The existing lower feeding mechanism adopts paired manufacturing of bevel gears, namely, in the manufacturing process, firstly, a pinion is processed, and then a large gear matched with the pinion is processed according to the tooth surface of the pinion. Therefore, a pair of bevel gears is not interchangeable during use. Because the pinion gear is more easily worn and loses efficacy quickly, the pinion gear and the bull gear need to be replaced together when the pinion gear is replaced, and the cost for replacing accessories is high.
5. The contact ratio of the existing lower feeding mechanism on the bevel gear is small, and the contact ratio is generally less than 2, so that the bearing capacity and the transmission stability of the bevel gear are poor.
6. In the existing lower feeding mechanism, in order to ensure stable transmission of a bevel gear, the height of the bevel gear needs to be larger, so that the weight of the bevel gear is increased, the production cost is increased, and the cost of the lower feeding mechanism is increased.
Disclosure of Invention
The invention aims to provide a lower feeding mechanism of a sewing machine, which solves the problems in the background technology.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a feeding mechanism transmission assembly under sewing machine, includes the transmission shaft, the upper end of transmission shaft and sewing machine driving motor's output shaft, the face gear that the lower extreme rigid coupling level of transmission shaft set up, face gear below sets up rather than the straight spur gear that can be at vertical in-plane rotation.
Furthermore, the upper end of the transmission shaft is provided with a coupler, and the upper end of the transmission shaft is connected with an output shaft of a driving motor of the sewing machine through the coupler.
Further, feeding mechanism is still including setting up the casing under the sewing machine, the front and back surface of casing all is parallel with straight spur gear place plane, the lower surface of casing sets up rather than the rectangle through-hole that matches in the department of corresponding with straight spur gear, straight spur gear's gear face bottom passes the rectangle through-hole and sets up the below at the casing lower surface.
Furthermore, a bearing seat is fixedly arranged on the inner surface of the shell at a position corresponding to the transmission shaft, and the transmission shaft is connected with a bearing of the bearing seat.
Further, face gear is including setting up the linkage segment on upper portion and setting up the mesh section and the face gear through-hole that runs through linkage segment and mesh section in the lower part, the diameter that linkage segment and mesh section are cylinder structure and mesh section is greater than the linkage segment, the lower surface of mesh section sets up face gear flank of tooth, face gear passes through face gear flank of tooth and straight spur gear meshing.
Further, straight-tooth spur gear's central point puts a set of bench step hole, the anterior aperture in step hole is greater than the rear portion aperture, the casing sets up the pressure disk that is used for spacing to straight-tooth spur gear that matches with the step hole in the position that corresponds with straight-tooth spur gear, the pressure disk is the cylinder structure, and its front portion sets up annular and the anterior blank holder that matches of step hole, and the pressure disk setting is downthehole and with the casing rigid coupling in the step, the opposite face sliding connection of pressure disk and straight-tooth spur gear.
Further, two threaded holes are symmetrically formed in the pressure plate, and the pressure plate is in threaded connection with the shell through bolts arranged in the threaded holes.
The invention has the following beneficial effects:
the transmission device of the lower feeding mechanism of the sewing machine is simple in structure, the size of the transmission device is reduced by 30% compared with that of the lower feeding mechanism in the prior art, the flexibility is good, the failure rate is low, and stitching can be performed on uppers.
The lower feeding mechanism of the sewing machine adopts the face gear and the straight spur gear for transmission, the face gear and the straight spur gear have no problem of axial error, and the eccentric load phenomenon can not be caused.
The lower feeding mechanism of the sewing machine adopts the face gear and the straight toothed spur gear for transmission, can ensure the transmission with a fixed transmission ratio, and has less noise and vibration in the transmission process.
The lower feeding mechanism of the sewing machine adopts the face gear and the straight spur gear for transmission, the wear speeds of the face gear and the straight spur gear are basically the same, and even if one of the face gear and the straight spur gear is damaged and needs to be replaced, because the face gear and the straight spur gear have interchangeability, only the damaged gear needs to be replaced, and the face gear and the straight spur gear do not need to be replaced together. This reduces the cost of replacing the fitting.
The contact ratio of the face gear and the straight spur gear of the lower feeding mechanism of the sewing machine is more than 2, and the bearing capacity and the transmission stability of the lower feeding mechanism are good.
The lower feeding mechanism of the sewing machine adopts the face gear and the straight-tooth cylindrical gear for transmission, the height and the quality of the face gear and the straight-tooth cylindrical gear are both smaller, the production cost is greatly reduced, and the production cost of the lower feeding mechanism is further reduced.
Drawings
FIG. 1 is a front view of the present invention (the front half of the housing is not shown);
FIG. 2 is a bottom plan view of the face gear;
FIG. 3 is a front view of a spur gear;
FIG. 4 is a left side view in section AA of FIG. 3;
FIG. 5 is a front view of the platen;
fig. 6 is a left side view of the BB section of fig. 5.
Detailed Description
As shown in fig. 1-6, a transmission assembly of a lower feeding mechanism of a sewing machine comprises a transmission shaft 11, wherein the upper end of the transmission shaft 11 is connected with an output shaft of a driving motor of the sewing machine, and is characterized in that the lower end of the transmission shaft 11 is fixedly connected with a face gear 2 which is horizontally arranged, and a spur gear 3 which can rotate in a vertical plane and is meshed with the face gear 2 is arranged below the face gear 2.
The transmission device of the lower feeding mechanism of the sewing machine is simple in structure, the size of the transmission device is reduced by 30% compared with that of the lower feeding mechanism in the prior art, the flexibility is good, the failure rate is low, and stitching can be performed on uppers.
The lower feeding mechanism of the sewing machine adopts the face gear and the straight spur gear for transmission, the face gear and the straight spur gear have no problem of axial error, and the eccentric load phenomenon can not be caused.
The lower feeding mechanism of the sewing machine adopts the face gear and the straight toothed spur gear for transmission, can ensure the transmission with a fixed transmission ratio, and has less noise and vibration in the transmission process.
The lower feeding mechanism of the sewing machine adopts the face gear and the straight spur gear for transmission, the wear speeds of the face gear and the straight spur gear are basically the same, and even if one of the face gear and the straight spur gear is damaged and needs to be replaced, because the face gear and the straight spur gear have interchangeability, only the damaged gear needs to be replaced, and the face gear and the straight spur gear do not need to be replaced together. This reduces the cost of replacing the fitting.
The contact ratio of the face gear and the straight spur gear of the lower feeding mechanism of the sewing machine is more than 2, and the bearing capacity and the transmission stability of the lower feeding mechanism are good.
The lower feeding mechanism of the sewing machine adopts the face gear and the straight-tooth cylindrical gear for transmission, the height and the quality of the face gear and the straight-tooth cylindrical gear are both smaller, the production cost is greatly reduced, and the production cost of the lower feeding mechanism is further reduced.
The upper end of the transmission shaft 11 is provided with a coupler 12, and the upper end of the transmission shaft 11 is connected with an output shaft of a driving motor of the sewing machine through the coupler 12.
Feeding mechanism is still including setting up casing 1 under the sewing machine, the front and back surface of casing 1 all is parallel with straight-tooth spur gear 3 place plane, the lower surface of casing 1 sets up rather than the rectangle through-hole 14 that matches with straight-tooth spur gear 3 department of correspondence, rectangle through-hole 14 setting is passed in the below of casing 1 lower surface to straight-tooth spur gear 3's gear face bottom.
The inner surface of the shell 1 is fixedly provided with a bearing seat 13 at a position corresponding to the transmission shaft 11, and the transmission shaft 11 is in bearing connection with the bearing seat 13.
The central point of straight-tooth spur gear 3 puts a set of bench step hole 31, the anterior aperture of step hole 31 is greater than the rear portion aperture, casing 1 corresponds the position with straight-tooth spur gear 3 and sets up the pressure disk 4 who is used for 3 spacing straight-tooth spur gears that match with step hole 31, pressure disk 4 is the cylinder structure, and its front portion sets up annular blank pressing 41 with the anterior matching of step hole 31, pressure disk 4 set up in step hole 31 and with casing 1 rigid coupling, pressure disk 4 and straight-tooth spur gear 3's opposite face sliding connection.
Two threaded holes 42 are symmetrically formed in the pressure plate 4, and the pressure plate 4 is in threaded connection with the shell 1 through bolts arranged in the threaded holes 42.
When the lower feeding mechanism of the sewing machine is used, the power is transmitted according to the following sequence:
an output shaft of a driving motor of the sewing machine, a coupler 12, a transmission shaft 11, a face gear 2 and a spur gear 3.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention in any way, and those skilled in the art can make various changes and modifications to the equivalent embodiments without departing from the scope of the present invention, and all such changes, modifications, equivalents and improvements that can be made to the above embodiments without departing from the technical spirit of the present invention are within the spirit and principle of the present invention.
Claims (7)
1. The utility model provides a feeding mechanism under sewing machine, includes transmission shaft (11), the upper end of transmission shaft (11) is connected with sewing machine driving motor's output shaft, its characterized in that, face gear (2) that the lower extreme rigid coupling level of transmission shaft (11) set up, face gear (2) below sets up rather than the straight spur gear (3) that can be at vertical in-plane internal rotation of meshing.
2. The lower feeding mechanism of sewing machine according to claim 1, wherein the upper end of the transmission shaft (11) is provided with a coupling (12), and the upper end of the transmission shaft (11) is connected with the output shaft of the driving motor of sewing machine through the coupling (12).
3. The lower feeding mechanism of the sewing machine as claimed in claim 1, further comprising a housing (1), wherein the front and rear surfaces of the housing (1) are parallel to the plane of the spur gear (3), the lower surface of the housing (1) is provided with a rectangular through hole (14) at a position corresponding to the spur gear (3), and the bottom end of the gear surface of the spur gear (3) passes through the rectangular through hole (14) and is arranged below the lower surface of the housing (1).
4. A lower feeding mechanism of a sewing machine according to claim 3, wherein a bearing seat (13) is fixedly arranged on the inner surface of the housing (1) at a position corresponding to the transmission shaft (11), and the transmission shaft (11) is in bearing connection with the bearing seat (13).
5. The lower feeding mechanism of the sewing machine according to claim 4, wherein the face gear (2) comprises a connecting section (21) arranged at the upper part and a meshing section (22) arranged at the lower part and a face gear through hole (23) penetrating through the connecting section (21) and the meshing section (22), the connecting section (21) and the meshing section (22) are both in a cylindrical structure, the diameter of the meshing section (22) is larger than that of the connecting section (21), a face gear tooth surface (24) is arranged on the lower surface of the meshing section (22), and the face gear (2) is meshed with the spur gear (3) through the face gear tooth surface (24).
6. The lower feeding mechanism of the sewing machine as claimed in claim 5, wherein a stepped hole (31) is formed in the center of the spur gear (3), the front aperture of the stepped hole (31) is larger than the rear aperture of the stepped hole, the housing (1) is provided with a pressing plate (4) which is matched with the stepped hole (31) and used for limiting the spur gear (3) at a position corresponding to the spur gear (3), the pressing plate (4) is of a cylindrical structure, the front portion of the pressing plate is provided with an annular pressing edge (41) which is matched with the front portion of the stepped hole (31), the pressing plate (4) is arranged in the stepped hole (31) and fixedly connected with the housing (1), and the opposite surface of the pressing plate (4) and the spur gear (3) is in sliding connection.
7. The lower feeding mechanism of sewing machine according to claim 6, characterized in that the pressure plate (4) is symmetrically provided with two threaded holes (42), and the pressure plate (4) is in threaded connection with the housing (1) through bolts arranged in the threaded holes (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011075787.XA CN112359504A (en) | 2020-10-10 | 2020-10-10 | Lower feeding mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011075787.XA CN112359504A (en) | 2020-10-10 | 2020-10-10 | Lower feeding mechanism of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112359504A true CN112359504A (en) | 2021-02-12 |
Family
ID=74508275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011075787.XA Pending CN112359504A (en) | 2020-10-10 | 2020-10-10 | Lower feeding mechanism of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112359504A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6334344A (en) * | 1986-07-28 | 1988-02-15 | Yoshida Kogyo Kk <Ykk> | Intermittent drive device |
| US5178028A (en) * | 1990-09-27 | 1993-01-12 | Lucas Western, Inc. | Offset face gear transmission |
| CN105650206A (en) * | 2016-03-31 | 2016-06-08 | 中国航空动力机械研究所 | Helicopter transmission device |
| CN206204563U (en) * | 2016-11-14 | 2017-05-31 | 浙江中捷缝纫科技有限公司 | A kind of step feeder of sewing machine |
| CN206802203U (en) * | 2017-01-13 | 2017-12-26 | 菲斯格（北京）科技有限公司 | Face gear train assembly |
| CN209338793U (en) * | 2019-01-03 | 2019-09-03 | 宁波胜鼎缝制机械设备有限公司 | A kind of computer roller stay |
| CN210975115U (en) * | 2019-10-22 | 2020-07-10 | 安徽杰羽制鞋机械科技有限公司 | Lower feeding mechanism of three-step roller car |
-
2020
- 2020-10-10 CN CN202011075787.XA patent/CN112359504A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6334344A (en) * | 1986-07-28 | 1988-02-15 | Yoshida Kogyo Kk <Ykk> | Intermittent drive device |
| US5178028A (en) * | 1990-09-27 | 1993-01-12 | Lucas Western, Inc. | Offset face gear transmission |
| CN105650206A (en) * | 2016-03-31 | 2016-06-08 | 中国航空动力机械研究所 | Helicopter transmission device |
| CN206204563U (en) * | 2016-11-14 | 2017-05-31 | 浙江中捷缝纫科技有限公司 | A kind of step feeder of sewing machine |
| CN206802203U (en) * | 2017-01-13 | 2017-12-26 | 菲斯格（北京）科技有限公司 | Face gear train assembly |
| CN209338793U (en) * | 2019-01-03 | 2019-09-03 | 宁波胜鼎缝制机械设备有限公司 | A kind of computer roller stay |
| CN210975115U (en) * | 2019-10-22 | 2020-07-10 | 安徽杰羽制鞋机械科技有限公司 | Lower feeding mechanism of three-step roller car |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210212 |