CN212895305U - Transmission mechanism of lockstitch sewing machine - Google Patents
Transmission mechanism of lockstitch sewing machine Download PDFInfo
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- CN212895305U CN212895305U CN202020528537.6U CN202020528537U CN212895305U CN 212895305 U CN212895305 U CN 212895305U CN 202020528537 U CN202020528537 U CN 202020528537U CN 212895305 U CN212895305 U CN 212895305U
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Abstract
The invention relates to the technical field of sewing machines, in particular to a transmission mechanism of a flat sewing machine, wherein a main shaft, a feeding shaft and a feed lifting tooth shaft are arranged in a rack, a driving motor is arranged at the outer end of the main shaft, the main shaft and the feed lifting tooth shaft are linked through a feed lifting tooth connecting rod component, a feeding device is arranged between the main shaft and the feeding shaft of the flat sewing machine, an adjusting device for adjusting the feeding device is also arranged on the rack, and the specific structure of the adjusting device is as follows: a pin shaft is arranged in the middle of the feeding adjusting seat, and the feeding adjusting seat is rotatably arranged on the rack through the pin shaft; an adjusting connecting rod is hinged to one side of the feeding adjusting seat, the upper end of the adjusting connecting rod is connected with an adjusting crank, and the adjusting crank is installed on a motor shaft of an adjusting motor; the adjusting motor is used as power, drives the adjusting connecting rod, and swings the feeding adjusting seat within a certain range by taking the pin shaft as the center, so that the feeding adjusting seat is controlled accurately.
Description
Technical Field
The utility model relates to the technical field of sewing machines, in particular to a transmission mechanism of a flat sewing machine.
Background
CN 201611142333.3 discloses a cloth dragging wheel and tooth synchronous adjusting system of a flat sewing machine, wherein a main shaft, a feeding shaft and a feed lifting shaft are arranged in a rack of the system, a driving motor is arranged at the outer end of the main shaft, the main shaft and the feed lifting shaft are linked through a feed lifting connecting rod component, a feeding device is arranged between the main shaft and the feeding shaft of the flat sewing machine, and an adjusting device for adjusting the feeding device is also arranged on the rack;
it should be pointed out that the adjusting device adopts a mode of two knobs, and has a certain defect in precision; in addition, the feeding device has the disadvantage of complex structure, and the auxiliary shaft directly obtains power from the main shaft, the main shaft moves in a directional rotation mode, the auxiliary shaft moves in a reciprocating swing mode, and power cannot be transmitted through a simple connecting rod, so that the feeding device is further complicated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can simple and easy structure, the convenient accurate drive mechanism of flush joint machine who adjusts the pay-off.
The purpose of the utility model is realized like this:
a transmission mechanism of a flat seamer comprises a frame, a main shaft, a feeding shaft and a feed lifting shaft are arranged in the frame, a driving motor is arranged at the outer end of the main shaft, the main shaft and the feed lifting shaft are linked through a feed lifting connecting rod component, a feeding device is arranged between the main shaft and the feeding shaft of the flat seamer, an adjusting device for adjusting the feeding device is also arranged on the frame,
the specific structure of the adjusting device is as follows: a pin shaft is arranged in the middle of the feeding adjusting seat, and the feeding adjusting seat is rotatably arranged on the rack through the pin shaft; an adjusting connecting rod is hinged to one side of the feeding adjusting seat, the upper end of the adjusting connecting rod is connected with an adjusting crank, and the adjusting crank is installed on a motor shaft of an adjusting motor; the adjusting connecting rod swings the feeding adjusting seat within a certain range by taking the pin shaft as a center.
Preferably, the feeding device comprises a feeding connecting rod, a limiting swing plate, a feeding adjusting seat and a feeding crank;
the lower end of the feeding connecting rod, the inner end of the limiting swing plate and the inner end of the feeding swing plate are coaxially hinged;
the upper end of the feeding connecting rod is sleeved on the main shaft and is used for driving the feeding swinging plate;
the other end of the limit swinging plate is hinged on the feeding adjusting seat and is used for limiting the motion track of the inner end of the feeding swinging plate;
the other end of the feeding swing plate is connected to a feeding crank, and the feeding crank drives the feeding shaft.
Preferably, the adjusting motor is a stepping motor or a servo motor.
Preferably, one side of the feeding crank is further provided with an auxiliary shaft connecting rod assembly, and the feeding crank drives an auxiliary shaft through the auxiliary shaft connecting rod assembly.
Compared with the prior art, the utility model outstanding and profitable technological effect is:
the adjusting device of the utility model adopts the adjusting motor as power, the adjusting motor drives the adjusting connecting rod, the feeding adjusting seat is swung within a certain range by taking the pin shaft as the center, and the control is more accurate;
the feeding device of the utility model is simplified, and the lower end of the feeding connecting rod, the inner end of the limit swing plate and the inner end of the feeding swing plate are coaxially hinged; the motion track of the inner end of the feeding swing plate is controlled through the limiting swing plate, so that the adjustment of a feeding crank is realized, and the whole structure is simplified;
the utility model discloses a pay-off crank passes through assist a link assembly to drive and assist the axle for the power of assisting the axle directly derives from the pay-off crank, need not the main shaft and assist the overlap joint power transmission between the axle, and the structure is retrencied, and is reliable and stable.
Drawings
Fig. 1 is one of the schematic structural diagrams of the present invention;
fig. 2 is a second schematic structural diagram of the present invention;
fig. 3 is a third schematic structural diagram of the present invention;
FIG. 4 is a fourth schematic structural diagram of the present invention;
reference numerals:
1-a main shaft; 2-a drive motor with an encoder; 3-adjusting the motor; 4-lifting tooth shaft; 5-a feeding shaft; 6-auxiliary shaft connecting rod; 7-a feeding connecting rod; 8-a feed dog linkage assembly; 9-auxiliary shaft; 10-auxiliary shaft crank; 11-adjusting the crank; 12-an adjusting link; 13-a feeding adjusting seat; 14-a pin shaft; 15-feeding swing plate; 16-power input end of feeding crank; 17-a feed crank; 18-power output end of feeding crank; 19-hinged shaft of limit swing plate and feeding adjusting seat; 20-limit swinging plates;
60-auxiliary shaft connecting rod assembly; 100-a feeding device; 200-adjusting means.
Detailed Description
The following description of the present invention will be made in detail with reference to the accompanying drawings 1 to 4.
The invention will be further described with reference to specific embodiments.
A transmission mechanism of a flat sewing machine comprises a frame, a main shaft 1, a feeding shaft 5 and a feed lifting shaft 4 are arranged in the frame, a driving motor is arranged at the outer end of the main shaft 1, the main shaft 1 and the feed lifting shaft 4 are linked through a feed lifting connecting rod component 8, a feeding device 100 is arranged between the main shaft 1 and the feeding shaft 5 of the flat sewing machine, an adjusting device 200 for adjusting the feeding device 100 is also arranged on the frame,
the specific structure of the adjusting device 200 is as follows: a pin shaft 14 is arranged in the middle of the feeding adjusting seat 13, and the feeding adjusting seat 13 is rotatably installed on the rack through the pin shaft 14; an adjusting connecting rod 12 is hinged to one side of the feeding adjusting seat 13, an adjusting crank 11 is connected to the upper end of the adjusting connecting rod 12, and the adjusting crank 11 is installed on a motor shaft of the adjusting motor 3; the adjusting connecting rod 12 swings the feeding adjusting seat 13 within a certain range by taking the pin shaft 14 as a center, and the control is accurate.
Preferably, the feeding device 100 comprises a feeding connecting rod 7, a limit swinging plate 20, a feeding swinging plate 15, a feeding adjusting seat 13 and a feeding crank 17;
the lower end of the feeding connecting rod 7, the inner end of the limit swing plate 20 and the inner end of the feeding swing plate 15 are coaxially hinged;
the upper end of the feeding connecting rod 7 is sleeved on the main shaft 1 and is used for driving the feeding swinging plate 15;
the other end of the limit swinging plate 20 is hinged on the feeding adjusting seat 13 and is used for limiting the movement track of the inner end of the feeding swinging plate 15; the adjustment of the feeding crank is realized, and the whole structure is simplified;
when the feeding adjusting seat 13 swings at an angle, the outer end of the limiting swing plate 20 moves upwards or downwards along with the swinging angle; the inner end of the limit swinging plate 20 must use the outer end of the limit swinging plate 20 as a circle center, so the motion track of the inner end of the limit swinging plate 20 can change; namely, the movement locus of the inner end of the feeding swing plate 15 is adjusted;
the other end of the feeding swing plate 15 is connected to a feeding crank 17, and the feeding crank 17 drives the feeding shaft 5.
Preferably, the adjusting motor 3 is a stepping motor or a servo motor.
Preferably, an auxiliary shaft connecting rod assembly 60 is further disposed on one side of the feeding crank 17, and the feeding crank 17 drives the auxiliary shaft 9 through the auxiliary shaft connecting rod assembly 60. The power of the auxiliary shaft directly comes from the feeding crank, the power transmission does not need to be lapped between the main shaft and the auxiliary shaft, the motion mode of the main shaft 1 is directional rotation, the motion mode of the auxiliary shaft 9 and the feeding shaft 5 is reciprocating swing, and the feeding device 100 converts the rotation of the main shaft 1 into the reciprocating swing of the feeding shaft 5; therefore, the auxiliary shaft 9 and the feeding shaft 5 are directly overlapped with the auxiliary shaft connecting rod assembly 60 to realize transmission, and the structure is simple, stable and reliable.
Preferably, a power output end 18 extends from one side of the feeding crank 17, an auxiliary shaft connecting rod 6 is hinged to the power output end 18, the other end of the auxiliary shaft connecting rod 6 is hinged to an auxiliary shaft crank 10, and the auxiliary shaft crank 10 is fixed on the auxiliary shaft 9.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (5)
1. A transmission mechanism of a flat sewing machine comprises a rack, wherein a main shaft (1), a feeding shaft (5) and a feed lifting shaft (4) are installed in the rack, a driving motor is arranged at the outer end of the main shaft (1), the main shaft (1) and the feed lifting shaft (4) are linked through a feed lifting connecting rod assembly (8), a feeding device (100) is arranged between the main shaft (1) and the feeding shaft (5) of the flat sewing machine, and the feeding device (100) is used for converting the rotation of the main shaft (1) into the reciprocating swing of the feeding shaft (5); the frame is also provided with an adjusting device (200) for adjusting the feeding device (100), which is characterized in that,
the specific structure of the adjusting device (200) is as follows: a pin shaft (14) is arranged in the middle of the feeding adjusting seat (13), and the feeding adjusting seat (13) is rotatably arranged on the rack through the pin shaft (14); an adjusting connecting rod (12) is hinged to one side of the feeding adjusting seat (13), an adjusting crank (11) is connected to the upper end of the adjusting connecting rod (12), and the adjusting crank (11) is installed on a motor shaft of the adjusting motor (3); the adjusting connecting rod (12) swings the feeding adjusting seat (13) within a certain range by taking the pin shaft (14) as a center.
2. The drive mechanism of a flat bed sewing machine according to claim 1, wherein: the feeding device (100) comprises a feeding connecting rod (7), a limiting swing plate (20), a feeding swing plate (15), a feeding adjusting seat (13) and a feeding crank (17);
the lower end of the feeding connecting rod (7), the inner end of the limiting swing plate (20) and the inner end of the feeding swing plate (15) are coaxially hinged;
the upper end of the feeding connecting rod (7) is sleeved on the main shaft (1) and is used for driving the feeding swinging plate (15);
the other end of the limit swinging plate (20) is hinged on the feeding adjusting seat (13) and is used for limiting the movement track of the inner end of the feeding swinging plate (15);
the other end of the feeding swing plate (15) is connected to a feeding crank (17), and the feeding crank (17) drives the feeding shaft (5).
3. The drive mechanism of a flat bed sewing machine according to claim 1, wherein: the adjusting motor (3) is a stepping motor or a servo motor.
4. The drive mechanism of a flat bed sewing machine according to claim 2, wherein: and an auxiliary shaft connecting rod assembly (60) is further arranged on one side of the feeding crank (17), and the feeding crank (17) drives the auxiliary shaft (9) through the auxiliary shaft connecting rod assembly (60).
5. The drive mechanism of a flat bed sewing machine according to claim 4, wherein: one side of the feeding crank (17) extends to form a power output end (18), an auxiliary shaft connecting rod (6) is hinged to the power output end (18), the other end of the auxiliary shaft connecting rod (6) is hinged to an auxiliary shaft crank (10), and the auxiliary shaft crank (10) is fixed to an auxiliary shaft (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020528537.6U CN212895305U (en) | 2020-04-08 | 2020-04-08 | Transmission mechanism of lockstitch sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020528537.6U CN212895305U (en) | 2020-04-08 | 2020-04-08 | Transmission mechanism of lockstitch sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212895305U true CN212895305U (en) | 2021-04-06 |
Family
ID=75227783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020528537.6U Active CN212895305U (en) | 2020-04-08 | 2020-04-08 | Transmission mechanism of lockstitch sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212895305U (en) |
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2020
- 2020-04-08 CN CN202020528537.6U patent/CN212895305U/en active Active
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