CN109457411B - Sewing machine and automatic thread trimming and presser foot lifting mechanism thereof - Google Patents
Sewing machine and automatic thread trimming and presser foot lifting mechanism thereof Download PDFInfo
- Publication number
- CN109457411B CN109457411B CN201910031721.1A CN201910031721A CN109457411B CN 109457411 B CN109457411 B CN 109457411B CN 201910031721 A CN201910031721 A CN 201910031721A CN 109457411 B CN109457411 B CN 109457411B
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- Prior art keywords
- presser foot
- foot lifting
- bevel gear
- driving motor
- sewing machine
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- 230000007246 mechanism Effects 0.000 title claims abstract description 81
- 238000009958 sewing Methods 0.000 title claims abstract description 44
- 238000009966 trimming Methods 0.000 title claims description 34
- 238000005520 cutting process Methods 0.000 claims abstract description 71
- 230000009471 action Effects 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims description 17
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/02—Mechanical drives
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/66—Disintegrating fibre-containing textile articles to obtain fibres for re-use
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention belongs to the technical field of sewing machines, in particular to a sewing machine and an automatic thread cutting and presser foot lifting mechanism thereof. The invention can respectively and independently drive the thread cutting mechanism and the presser foot lifting mechanism to perform thread cutting action and presser foot lifting action through one driving motor, thereby effectively reducing the number of parts, ensuring that the structure of the sewing machine is more compact and simple, and the sewing machine has low manufacturing cost and small occupied space.
Description
Technical field:
the invention belongs to the technical field of sewing machines, in particular to a sewing machine and an automatic thread cutting and presser foot lifting mechanism thereof.
The background technology is as follows:
along with the continuous improvement of the automation degree of the sewing machine, the sewing machine is generally provided with an automatic thread cutting mechanism and an automatic thread lifting presser foot mechanism, the automatic thread cutting mechanism generally installs a thread cutting knife below a platen, the presser foot of the automatic thread lifting presser foot mechanism is arranged above the platen, and when a thread is cut, the thread cutting mechanism is driven by a motor to move so as to realize thread cutting action; when the presser foot is lifted, the electromagnet or the air cylinder drives the automatic presser foot lifting mechanism to move so as to realize the lifting and the placing of the presser foot. The automatic thread trimming mechanism of the sewing machine generally occurs when the presser foot is not lifted to be in a pressed state at the end of sewing, so that the actions of the thread trimming mechanism and the presser foot mechanism are often linked in the sewing process.
However, since the automatic thread trimming mechanism and the automatic presser foot lifting mechanism of the sewing machine are driven by the corresponding driving mechanisms to trim threads and lift and release the presser feet respectively, the two driving mechanisms are required to perform driving work, and the sewing machine has the advantages of single function, more parts, complex structure, high manufacturing cost and large occupied space.
The invention comprises the following steps:
the invention aims to provide a sewing machine with simple structure, low manufacturing cost and small occupied space and an automatic thread trimming and presser foot lifting mechanism thereof.
The invention is realized in the following way:
one of the purposes of the invention is to provide an automatic thread trimming and presser foot lifting mechanism of a sewing machine, which comprises a thread trimming mechanism and a presser foot lifting mechanism which are arranged on a machine shell, wherein the thread trimming mechanism is connected with one end of a thread trimming driving shaft, the thread trimming driving shaft is rotated to drive the thread trimming mechanism to perform thread trimming action, the presser foot lifting mechanism is connected with one end of a presser foot lifting rear lever, the presser foot lifting rear lever is rotated to drive the presser foot lifting mechanism to perform the presser foot lifting action, a driving motor is arranged on the machine shell, a driving bevel gear is arranged on an output shaft of the driving motor, a tooth is arranged on one part of the peripheral surface of the driving bevel gear, the other part of the peripheral surface is a smooth surface, the other end of the thread trimming driving shaft is provided with a thread trimming bevel gear which can be meshed with the tooth, the other end of the presser foot lifting rear lever is in transmission connection with an output shaft of the driving motor through a transmission component, the driving motor is electrically connected with a controller, and the tooth of the driving bevel gear is separated from the thread trimming bevel gear, and the controller controls the driving motor to drive the presser foot lifting rear lever to rotate through the transmission component; the controller controls the driving motor to only drive the wire cutting driving shaft to rotate through the meshing of the teeth of the driving bevel gear and the wire cutting bevel gear.
In the automatic thread trimming and presser foot lifting mechanism of the sewing machine, the transmission assembly comprises a presser foot lifting lower shaft rotatably connected to the machine shell, one end of the presser foot lifting lower shaft is provided with a presser foot lifting bevel gear capable of being meshed with a tooth of the driving bevel gear, the other end of the presser foot lifting lower shaft is connected with one end of a swinging connecting rod, and the other end of the swinging connecting rod is connected with the corresponding end of a presser foot lifting rear lever through a push rod.
In the automatic thread trimming and presser foot lifting mechanism of the sewing machine, the lower shaft of the presser foot lifting mechanism and the thread trimming driving shaft are positioned on the same axis.
In the automatic thread trimming and presser foot lifting mechanism of the sewing machine, the transmission assembly comprises a cam arranged on an output shaft of the driving motor, a protruding portion of the cam corresponds to a smooth surface of the driving bevel gear, the cam, the driving bevel gear and the output shaft of the driving motor synchronously rotate, the shell is slidably connected with a push rod, one end of the push rod abuts against a side wall of the cam, and the other end of the push rod abuts against a corresponding end of the presser foot lifting rear lever.
In the automatic thread trimming and presser foot lifting mechanism of the sewing machine, the shell is provided with the guide seat, the guide seat is provided with the sliding channel or one side surface of the guide seat is provided with the through groove, the through groove and the side surface of the shell enclose the sliding channel, and the push rod penetrates through the sliding channel.
In the automatic thread trimming and presser foot lifting mechanism of the sewing machine, one end of the push rod, which is close to the cam, is rotatably connected with a bearing or a driven wheel through a shaft pin, and the bearing or the driven wheel is abutted against the side wall of the cam.
In the automatic thread trimming and presser foot lifting mechanism of the sewing machine, a positioning through groove is formed in the end face of one end of the push rod, close to the presser foot lifting rear lever, and the corresponding end of the presser foot lifting rear lever is arranged in the positioning through groove in a penetrating mode.
In the automatic thread trimming and presser foot lifting mechanism of the sewing machine, the upper end and the lower end of the output shaft of the driving motor extend outwards to the outside of the driving motor, the driving bevel gear is arranged at the lower end of the output shaft of the driving motor, and the cam is arranged at the upper end of the output shaft of the driving motor.
In the automatic thread trimming and presser foot lifting mechanism of the sewing machine, the output shaft of the driving motor is provided with the rotating shaft swinging rod, the rotating shaft swinging rod and the output shaft of the driving motor synchronously rotate, and the shell or the driving motor is provided with the position switch for detecting the swinging position of the rotating shaft swinging rod, and the position switch is electrically connected with the controller.
Another object of the present invention is to provide a sewing machine, including an automatic thread trimming and presser foot lifting mechanism of the sewing machine.
Compared with the prior art, the invention has the outstanding advantages that:
1. the thread cutting mechanism and the presser foot lifting mechanism can be respectively and independently driven by one driving motor to perform thread cutting action and presser foot lifting action, so that the number of parts is effectively reduced, the structure of the sewing machine is more compact and simple, the manufacturing cost is low, and the occupied space is small;
2. when the thread is cut or the presser foot is lifted, the position of the rotating shaft swinging rod is detected through the position switch in order to prevent the output shaft rotation quantity of the driving motor from being excessively large to drive the presser foot lifting mechanism or the thread cutting mechanism to do the presser foot lifting work or the thread cutting work, so that the accuracy and the safety of the thread cutting machine are improved.
Description of the drawings:
FIG. 1 is a perspective view of one embodiment of the present invention;
FIG. 2 is a second perspective view of an embodiment of the present invention;
FIG. 3 is a perspective view of the drive bevel gear of the present invention;
FIG. 4 is a second perspective view of an embodiment of the present invention;
FIG. 5 is a perspective view of a putter in accordance with a second embodiment of the present invention;
fig. 6 is a schematic view of a thread cutting mechanism of the present invention.
In the figure: 1. a wire cutting driving shaft; 2. the lever is arranged behind the presser foot; 3. a driving motor; 4. driving a bevel gear; 5. teeth; 6. a smooth surface; 7. cutting a bevel gear; 8. lifting a lower shaft of the presser foot; 9. lifting a presser foot bevel gear; 10. swinging the connecting rod; 11. a push rod; 12. a cam; 13. a push rod; 14. a guide seat; 15. a bearing; 16. positioning through grooves; 17. a rotating shaft swing rod; 18. a position switch; 19. a rotating shuttle spindle; 20. a spindle sleeve; 21. a connecting rod swinging seat; 22. a long connecting rod; 23. a large-movement tool apron; 24. a short connecting rod; 25. a small movable knife holder; 26. a large blade; 27. a small blade.
The specific embodiment is as follows:
the invention is further described below with reference to the specific examples, see fig. 1-6:
embodiment one:
one of the purposes of the invention is to provide an automatic thread cutting and presser foot lifting mechanism of a sewing machine, which comprises a thread cutting mechanism and a presser foot lifting mechanism which are arranged on a machine shell, wherein the thread cutting mechanism is connected with one end of a thread cutting driving shaft 1 which is rotatably connected on the machine shell, the thread cutting driving shaft 1 is rotated to drive the thread cutting mechanism to perform thread cutting action, the presser foot lifting mechanism is connected with one end of a presser foot lifting rear lever 2 hinged on the machine shell, the presser foot lifting rear lever 2 is rotated to drive the presser foot lifting mechanism to perform the presser foot lifting action, a driving motor 3 is arranged on the machine shell, a driving bevel gear 4 is arranged on an output shaft of the driving motor 3, a tooth 5 is arranged on the peripheral surface of one part of the driving bevel gear 4, a smooth surface 6 is arranged on the other part of the peripheral surface of the driving bevel gear 4, the other end of the thread cutting driving shaft 1 is provided with a thread cutting bevel gear 7, the thread cutting bevel gear 7 can be meshed with the tooth 5, the other end of the presser foot lifting rear lever 2 is in transmission connection with an output shaft of the driving motor 3 through a transmission component, the driving motor 3 is electrically connected with a controller, the tooth 5 of the driving bevel gear 4 is separated from the thread cutting bevel gear 7, and the controller controls the driving bevel gear 2 to perform the presser foot lifting action through the transmission component to drive lever 2; the controller controls the driving motor 3 to drive only the wire cutting driving shaft 1 to rotate by meshing the teeth 5 of the driving bevel gear 4 with the wire cutting bevel gear 7.
According to the invention, the thread cutting mechanism and the presser foot lifting mechanism can be respectively and independently driven by one driving motor 3 to perform thread cutting action and presser foot lifting action, so that the number of parts is effectively reduced, the structure of the sewing machine is more compact and simple, the manufacturing cost is low, and the occupied space is small.
In order to realize that when the tooth 5 of the drive bevel gear 4 is meshed with the thread cutting bevel gear 7, the drive motor 3 cannot drive the presser foot lifting rear lever 2 to rotate through the drive assembly; when the tooth 5 of the drive bevel gear 4 is separated from the thread cutting bevel gear 7, the drive motor 3 can drive the presser foot lifting rear lever 2 to rotate through the drive assembly. In this embodiment, the transmission assembly includes a lower lifting foot shaft 8 rotatably connected to the casing, one end of the lower lifting foot shaft 8 is provided with a bevel gear 9 capable of being meshed with the tooth 5 of the driving bevel gear 4, the other end of the lower lifting foot shaft 8 is connected with one end of a swinging connecting rod 10, and the other end of the swinging connecting rod 10 is connected with the corresponding end of the rear lifting foot lever 2 through a push rod 11. In the thread cutting process, the driving motor 3 is meshed with the thread cutting bevel gear 7 through the tooth teeth 5 of the driving bevel gear 4 to drive the thread cutting driving shaft 1 to rotate, and the presser foot lifting bevel gear 9 is positioned at the smooth surface 6 of the driving bevel gear 4, namely the presser foot lifting bevel gear 9 is not meshed with the tooth teeth 5 of the driving bevel gear 4; in the process of lifting the presser foot, the driving motor 3 is meshed with the bevel gear 9 for lifting the presser foot through the tooth 5 of the driving bevel gear 4 to drive the lower shaft 8 of the presser foot to rotate, then the post-presser foot lifting lever 2 is driven to rotate through the ejector rod 11, and the thread cutting bevel gear 7 is positioned at the smooth surface 6 of the driving bevel gear 4.
Further, the lifting and pressing foot lower shaft 8 and the wire cutting driving shaft 1 are positioned on the same axis.
When the presser foot is lifted or cut, the presser foot lifting mechanism or the presser foot lifting mechanism is prevented from being driven to perform the presser foot lifting operation or the thread cutting operation due to the overlarge rotation amount of the output shaft of the driving motor 3, in order to improve the accuracy and the safety of the invention, the output shaft of the driving motor 3 is provided with a rotating shaft swinging rod 17, the rotating shaft swinging rod 17 and the output shaft of the driving motor 3 synchronously rotate, the shell or the driving motor 3 is provided with a position switch 18 for detecting the swinging position of the rotating shaft swinging rod 17, and the position switch 18 is electrically connected with a controller. In this embodiment, the upper and lower ends of the output shaft of the driving motor 3 extend outward beyond the driving motor 3, the driving bevel gear 4 is disposed at the upper end of the output shaft of the driving motor 3, the rotating shaft swing rod 17 is disposed at the lower end of the output shaft of the driving motor 3, and the position switch 18 is disposed on the lower end surface of the driving motor 3.
In this embodiment, the thread cutting mechanism includes a spindle sleeve 20 sleeved on a spindle 19 of the rotating shuttle, the spindle sleeve 20 is fixedly disposed on the casing, one end of the thread cutting driving shaft 1 near the thread cutting mechanism is provided with a connecting rod swinging seat 21, one end of the connecting rod swinging seat 21 is hinged to one end of a movable knife seat 23 through a long connecting rod 22, the other end of the connecting rod swinging seat 21 is hinged to one end of a movable knife seat 25 through a short connecting rod 24, the movable knife seat 23 and the movable knife seat 25 are both rotatably connected to the spindle sleeve 20, a large knife blade 26 is disposed at the other end of the movable knife seat 23, a small knife blade 27 is disposed at the other end of the movable knife seat 25, and the large knife blade 26 and the small knife blade 27 are arranged in an inner-outer staggered manner.
Wire cutting principle of wire cutting mechanism: the driving motor 3 drives the wire cutting driving shaft 1 and the connecting rod swinging seat 21 to rotate, and the long connecting rod 22 and the short connecting rod 24 drive the large movable tool apron 23 and the small movable tool apron 25 to rotate in opposite directions around the axis of the main shaft sleeve 20 respectively, so that the wire cutting is realized by means of the inner and outer staggered rotation of the large blade 26 and the small blade 27.
Meanwhile, in the embodiment, the presser foot lifting mechanism comprises a presser foot lifting front lever hinged on the machine shell, one end of the presser foot lifting front lever is connected with the corresponding end of the presser foot lifting rear lever 2 through a pull rod, the other end of the presser foot lifting front lever is connected with a pressing rod guide frame, and the lower end of the pressing rod guide frame is provided with a presser foot.
Embodiment two:
the present embodiment is basically the same as the first embodiment in structure, and the main difference is that: the transmission assembly comprises a cam 12 arranged on an output shaft of the driving motor 3, a protruding part of the cam 12 corresponds to the position of the smooth surface 6 of the driving bevel gear 4, the cam 12, the driving bevel gear 4 and the output shaft of the driving motor 3 synchronously rotate, the shell is connected with a push rod 13 in a sliding mode, one end of the push rod 13 abuts against the side wall of the cam 12, and the other end of the push rod 13 abuts against the corresponding end of the lever 2 after the presser foot is lifted. In the thread cutting process, the driving motor 3 is meshed with the thread cutting bevel gear 7 through the teeth 5 of the driving bevel gear 4 to drive the thread cutting driving shaft 1 to rotate, and one end of the push rod 13 is abutted against the base circle of the cam 12; in the process of lifting the presser foot, the driving motor 3 pushes the push rod 13 to move through the protruding part of the cam 12, so that the lever 2 rotates after lifting the presser foot, and the thread cutting bevel gear 7 is positioned at the smooth surface 6 of the driving bevel gear 4.
Further, the casing is slidably connected with a specific mechanism of the push rod 13: the shell is provided with a guide seat 14, a through groove is formed in one side surface of the guide seat 14, a sliding channel is formed between the through groove and the side surface of the shell in a surrounding mode, and a push rod 13 is arranged in the sliding channel in a penetrating mode. Meanwhile, the sliding channel can also adopt another setting mode: the guide holder 14 is provided with a sliding passage.
In order to avoid abrasion of the push rod 13 and the side wall of the cam 12, the service life of the push rod is reduced, the lifting height and sensitivity of the presser foot are affected, one end of the push rod 13 close to the cam 12 is rotatably connected with a bearing 15 or a driven wheel through a shaft pin, and the bearing 15 or the driven wheel is abutted against the side wall of the cam 12. In this embodiment, the push rod 13 is rotatably connected to a bearing 15.
In order to enable the push rod 13 to effectively push the presser foot lifting rear lever 2 to rotate, a positioning through groove 16 is formed in the end face, close to one end face of the presser foot lifting rear lever 2, of the push rod 13, and the corresponding end of the presser foot lifting rear lever 2 is arranged in the positioning through groove 16 in a penetrating mode.
Further, since the thread cutting mechanism is located below the needle plate of the sewing machine, the thread lifting presser foot mechanism is located above the needle plate of the sewing machine, the distance between the thread cutting mechanism and the thread lifting presser foot mechanism is far, in order to prevent that the gap between transmission parts is large, the transmission stability is affected, the upper end and the lower end of the output shaft of the driving motor 3 extend outwards to the outside of the driving motor 3, the driving bevel gear 4 is arranged at the lower end of the output shaft of the driving motor 3, and the cam 12 is arranged at the upper end of the output shaft of the driving motor 3.
Another object of the present invention is to provide a sewing machine, including an automatic thread trimming and presser foot lifting mechanism of the sewing machine.
The above embodiment is only one of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention, therefore: all equivalent changes in shape, structure and principle of the invention should be covered in the scope of protection of the invention.
Claims (9)
1. The utility model provides an automatic thread cutting of sewing machine and lift presser foot mechanism, includes the thread cutting mechanism that sets up on the casing and lifts the presser foot mechanism, thread cutting mechanism is connected with the one end of cutting line drive shaft (1), rotates and cuts line drive shaft (1) and drive and cut line mechanism and do the action of cutting the line, lift the presser foot mechanism and lift the one end of presser foot back lever (2) and be connected, rotate and lift the presser foot back lever (2) and drive and lift the presser foot mechanism and do and lift the presser foot action, its characterized in that: the novel presser foot lifting mechanism is characterized in that a driving motor (3) is arranged on the machine shell, a driving bevel gear (4) is arranged on an output shaft of the driving motor (3), a tooth (5) is arranged on one part of the outer peripheral surface of the driving bevel gear (4), a smooth surface (6) is arranged on the other part of the outer peripheral surface of the driving bevel gear (4), a thread cutting bevel gear (7) is arranged at the other end of the thread cutting driving shaft (1), the thread cutting bevel gear (7) can be meshed with the tooth (5), the other end of the presser foot lifting rear lever (2) is in transmission connection with the output shaft of the driving motor (3) through a transmission component, the driving motor (3) is electrically connected with a controller, and when the tooth (5) of the driving bevel gear (4) is separated from the thread cutting bevel gear (7), the controller controls the driving motor (3) to only drive the presser foot lifting rear lever (2) to rotate through the transmission component; when the teeth (5) of the drive bevel gear (4) are meshed with the wire cutting bevel gear (7), the controller controls the drive motor (3) to only drive the wire cutting drive shaft (1) to rotate;
the motor drive device is characterized in that a rotating shaft swinging rod (17) is arranged on an output shaft of the driving motor (3), the rotating shaft swinging rod (17) and the output shaft of the driving motor (3) synchronously rotate, a shell or the driving motor (3) is provided with a position switch (18) for detecting the swinging position of the rotating shaft swinging rod (17), and the position switch (18) is electrically connected with a controller;
the thread cutting mechanism comprises a spindle sleeve (20) sleeved on a rotating shuttle spindle (19), the spindle sleeve (20) is fixedly arranged on a machine shell, one end of a thread cutting driving shaft (1) close to the thread cutting mechanism is provided with a connecting rod swinging seat (21), one end of the connecting rod swinging seat (21) is hinged to one end of a movable cutter seat (23) through a long connecting rod (22), the other end of the connecting rod swinging seat (21) is hinged to one end of a movable cutter seat (25) through a short connecting rod (24), the movable cutter seat (23) and the movable cutter seat (25) are both rotatably connected to the spindle sleeve (20), the other end of the movable cutter seat (23) is provided with a large cutter blade (26), the other end of the movable cutter seat (25) is provided with a small cutter blade (27), and the large cutter blade (26) and the small cutter blade (27) are arranged in an inner-outer staggered mode.
2. The automatic thread trimming and presser foot lifting mechanism of a sewing machine of claim 1, wherein: the transmission assembly comprises a presser foot lifting lower shaft (8) which is rotatably connected to the machine shell, one end of the presser foot lifting lower shaft (8) is provided with a presser foot lifting bevel gear (9) which can be meshed with a tooth (5) of the driving bevel gear (4), the other end of the presser foot lifting lower shaft (8) is connected with one end of a swinging connecting rod (10), and the other end of the swinging connecting rod (10) is connected with the corresponding end of a presser foot lifting rear lever (2) through a push rod (11).
3. The automatic thread trimming and presser foot lifting mechanism for a sewing machine of claim 2, wherein: the lower shaft (8) of the presser foot is positioned on the same axis with the thread cutting driving shaft (1).
4. The automatic thread trimming and presser foot lifting mechanism of a sewing machine of claim 1, wherein: the transmission assembly comprises a cam (12) arranged on an output shaft of the driving motor (3), a protruding part of the cam (12) corresponds to a smooth surface (6) of the driving bevel gear (4), the cam (12), the driving bevel gear (4) and the output shaft of the driving motor (3) synchronously rotate, the shell is slidably connected with a push rod (13), one end of the push rod (13) abuts against a side wall of the cam (12), and the other end of the push rod (13) abuts against a corresponding end of the lever (2) after the presser foot is lifted.
5. The automatic thread trimming and presser foot lifting mechanism for a sewing machine of claim 4, wherein: the shell is provided with a guide seat (14), a sliding channel is arranged on the guide seat (14) or a through groove is arranged on one side surface of the guide seat (14), the sliding channel is formed by surrounding the through groove and the side surface of the shell, and a push rod (13) is arranged in the sliding channel in a penetrating mode.
6. The automatic thread trimming and presser foot lifting mechanism for a sewing machine of claim 4, wherein: one end of the push rod (13) close to the cam (12) is rotatably connected with a bearing (15) or a driven wheel through a shaft pin, and the bearing (15) or the driven wheel is abutted against the side wall of the cam (12).
7. The automatic thread trimming and presser foot lifting mechanism for a sewing machine of claim 4, wherein: the end face, close to one end face of the presser foot lifting rear lever (2), of the push rod (13) is provided with a positioning through groove (16), and the corresponding end of the presser foot lifting rear lever (2) is arranged in the positioning through groove (16) in a penetrating mode.
8. The automatic thread trimming and presser foot lifting mechanism for a sewing machine of claim 4, wherein: the upper end and the lower end of the output shaft of the driving motor (3) extend outwards to the outside of the driving motor (3), the driving bevel gear (4) is arranged at the lower end of the output shaft of the driving motor (3), and the cam (12) is arranged at the upper end of the output shaft of the driving motor (3).
9. A sewing machine, characterized in that: an automatic thread cutting and presser foot lifting mechanism comprising a sewing machine according to any one of claims 1 to 8.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019200043151 | 2019-01-02 | ||
| CN201920004315 | 2019-01-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109457411A CN109457411A (en) | 2019-03-12 |
| CN109457411B true CN109457411B (en) | 2023-12-05 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920058170.3U Expired - Fee Related CN209456688U (en) | 2019-01-02 | 2019-01-14 | A kind of sewing machine and its automatic shearing and foot lifting mechanism |
| CN201910031721.1A Active CN109457411B (en) | 2019-01-02 | 2019-01-14 | Sewing machine and automatic thread trimming and presser foot lifting mechanism thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920058170.3U Expired - Fee Related CN209456688U (en) | 2019-01-02 | 2019-01-14 | A kind of sewing machine and its automatic shearing and foot lifting mechanism |
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| CN (2) | CN209456688U (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN209456688U (en) * | 2019-01-02 | 2019-10-01 | 浙江大森缝纫机有限公司 | A kind of sewing machine and its automatic shearing and foot lifting mechanism |
| CN109722797A (en) * | 2019-03-23 | 2019-05-07 | 浙江美机缝纫机有限公司 | A kind of thread-trimming lifter-presser foot mechanism of sewing machine |
| CN110184756B (en) * | 2019-07-02 | 2024-01-30 | 阮健明 | Automatic thread trimming and presser foot lifting device |
| CN113802272B (en) * | 2020-06-16 | 2022-10-21 | 杰克科技股份有限公司 | Automatic thread trimming and presser foot lifting structure of thick material machine |
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| CN202755193U (en) * | 2012-07-11 | 2013-02-27 | 中捷缝纫机股份有限公司 | Presser foot drive mechanism of sewing machine |
| CN104499194A (en) * | 2015-01-20 | 2015-04-08 | 浙江中捷缝纫科技有限公司 | Sewing machine roller presser foot stitch and backstitch driving mechanism |
| JP2015073741A (en) * | 2013-10-09 | 2015-04-20 | 星鋭縫▲じん▼機股▲ふん▼有限公司 | Thread cutting mechanism for sewing machine |
| CN105970494A (en) * | 2016-06-24 | 2016-09-28 | 杰克缝纫机股份有限公司 | Integrated presser foot lifting and thread trimming device and sewing machine |
| CN206828769U (en) * | 2017-05-24 | 2018-01-02 | 上海富山精密机械科技有限公司 | The automatic shearing and automatic needle-foot-lifting device of sewing machine |
| CN209456688U (en) * | 2019-01-02 | 2019-10-01 | 浙江大森缝纫机有限公司 | A kind of sewing machine and its automatic shearing and foot lifting mechanism |
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2019
- 2019-01-14 CN CN201920058170.3U patent/CN209456688U/en not_active Expired - Fee Related
- 2019-01-14 CN CN201910031721.1A patent/CN109457411B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202755193U (en) * | 2012-07-11 | 2013-02-27 | 中捷缝纫机股份有限公司 | Presser foot drive mechanism of sewing machine |
| JP2015073741A (en) * | 2013-10-09 | 2015-04-20 | 星鋭縫▲じん▼機股▲ふん▼有限公司 | Thread cutting mechanism for sewing machine |
| CN104499194A (en) * | 2015-01-20 | 2015-04-08 | 浙江中捷缝纫科技有限公司 | Sewing machine roller presser foot stitch and backstitch driving mechanism |
| CN105970494A (en) * | 2016-06-24 | 2016-09-28 | 杰克缝纫机股份有限公司 | Integrated presser foot lifting and thread trimming device and sewing machine |
| CN206828769U (en) * | 2017-05-24 | 2018-01-02 | 上海富山精密机械科技有限公司 | The automatic shearing and automatic needle-foot-lifting device of sewing machine |
| CN209456688U (en) * | 2019-01-02 | 2019-10-01 | 浙江大森缝纫机有限公司 | A kind of sewing machine and its automatic shearing and foot lifting mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN209456688U (en) | 2019-10-01 |
| CN109457411A (en) | 2019-03-12 |
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