CN111041724B - Low energy consumption sewing machine - Google Patents
Low energy consumption sewing machine Download PDFInfo
- Publication number
- CN111041724B CN111041724B CN201911417319.3A CN201911417319A CN111041724B CN 111041724 B CN111041724 B CN 111041724B CN 201911417319 A CN201911417319 A CN 201911417319A CN 111041724 B CN111041724 B CN 111041724B
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- output
- shaft
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- gear
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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
- D05B63/00—Devices associated with the loop-taker thread, e.g. for tensioning
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/10—Electrical or electromagnetic drives
Abstract
The invention discloses a low-energy-consumption sewing machine, which comprises a sewing machine motor, a cam belt pulley and a speed change mechanism, wherein the speed change mechanism comprises: input shaft, input gear, output shaft, output gear, output dial arm, dial. When the sewing machine motor is started, the input shaft and the input gear are driven to rotate, the output gear and the output shaft are driven to rotate, and the cam belt wheel can be driven to rotate by the rotation of the output shaft. When the rotating speed of the cam belt pulley needs to be adjusted, the shifting piece drives the output shifting arm to move along the axial lead direction of the output shaft, so that the output gear is driven to slide on the output shaft, the output gear can be adjusted to be meshed with the output gear with a small diameter or meshed with the output gear with a large diameter through sliding of the output gear, the transmission ratio of the input gear with a small diameter and the output gear with a large diameter is changed, and the rotating speed of the cam belt pulley is adjusted.
Description
Technical Field
The invention relates to the technical field of sewing machines, in particular to a low-energy-consumption sewing machine.
Background
Chinese patent No. CN 106192238A discloses a sewing machine including a sewing machine motor which operates a balance, a needle bar and a shuttle in a linked manner via an upper shaft and a lower shaft. Also, a stepping motor is included separately from the sewing machine motor. The lower thread supplier receives and drives a driving force from the stepping motor, and applies tension to the lower thread according to the driving timing and the driving amount of the stepping motor.
In the prior art, in order to supply the lower thread at a proper time for sewing conditions, the original mode of controlling the motor of a single sewing machine is adopted, and the cam belt wheel is driven to rotate by independently arranging the motor, so that the lower thread supply body is independently controlled.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a low-energy-consumption sewing machine which has the effect of reducing the energy consumption of equipment operation.
The technical purpose of the invention is realized by the following technical scheme:
the utility model provides a low energy consumption sewing machine, includes sewing machine motor and cam pulley, still including speed change mechanism, speed change mechanism includes:
the input shaft is in transmission connection with the sewing machine motor;
the input gears are at least two, all the input gears are fixedly arranged on the input shaft, and the diameters of all the input gears are different;
the output shaft is arranged in parallel with the input shaft and is in transmission connection with the cam belt pulley;
the number of the output gears is the same as that of the input gears, the diameters of all the output gears are different, all the output gears are fixedly connected, and the output gears are axially slidably and circumferentially positioned and installed on the output shafts;
one end of the output shifting arm is connected to the output gear;
the shifting piece is used for driving the output shifting arm to slide along the axial lead direction of the output shaft; the output gear is formed with a plurality of operating condition along with output shifting arm slides on the output shaft, wherein, operating condition quantity is the same with output gear quantity, and all has a set of output gear and input gear meshing under every state.
So set up, can drive input shaft and input gear rotation when the sewing machine motor starts, and then drive output gear and output shaft and rotate, and the output shaft rotates and can drive the rotation of cam pulley. When the rotating speed of the cam belt pulley needs to be adjusted, the shifting piece drives the output shifting arm to move along the axial lead direction of the output shaft, so that the output gear is driven to slide on the output shaft, the output gear can be adjusted to be meshed with the output gear with a small diameter or meshed with the output gear with a large diameter through sliding of the output gear, the transmission ratio of the input gear with a small diameter and the output gear with a large diameter is changed, and the rotating speed of the cam belt pulley is adjusted.
More preferably: the shifting piece comprises a rotating piece and a limiting shaft, the output shifting arm is connected to the limiting shaft in a sliding mode, a sliding groove with a path shape and a direction of the axis line of the sliding groove changing is formed in the side wall of the rotating piece, and one end, far away from the output gear, of the output shifting arm is inserted into the sliding groove.
So set up, through rotating the piece, the tip of output group arm can take place relative activity with the spout within a definite time to make the output group arm slide along spacing axle and drive output gear and slide along the output shaft.
More preferably: the spout includes station groove and guide way, the quantity in station groove is the same with the quantity of output gear, and is a plurality of the station groove is located respectively on the different cross sections of rotating the piece and around crisscross distribution of circumferencial direction, two adjacent station grooves are connected to the guide way.
So set up, the station groove can provide the effect that the arm was dialled in the locking output, avoids the output shaft to rotate the vibration that the in-process produced and leads to rotating the piece and take place to rotate.
More preferably: the speed change mechanism further comprises a transmission shaft, two fixed transmission gears which are respectively used for being meshed with the two output gears and two movable transmission gears which are respectively used for being meshed with the input gear are arranged on the transmission shaft, the two fixed transmission gears are fixedly arranged on the transmission shaft, and the two movable transmission gears are axially arranged on the transmission shaft in a sliding manner and circumferentially positioned; the two movable transmission gears are fixedly connected, and a transmission shifting arm used for driving the movable transmission gears to slide along the axial direction is arranged between the shifting piece and the movable transmission gears.
So set up, increase a transmission shaft for cam pulley's rotational speed has more regulation stations.
More preferably: the input gear sets up to two, rotate on the piece with be provided with the transmission dial arm complex sliding tray, the sliding tray is including four station grooves, and works as when the arm is accomplished to slide in a station groove to the output, the arm is dialled in the transmission and two station grooves are slided and are switched evening.
So set up, make the cam pulley can form four kinds of different rotational speeds.
More preferably: the cross sections of the output shaft and the input shaft are both plum blossom-shaped.
More preferably: the input shaft is in transmission connection with a gear or a belt between lower shafts on the low-energy-consumption sewing machine, which is used for driving the shuttle to rotate.
More preferably: one end of the output shaft is provided with a worm, and the cam belt pulley is provided with a worm wheel meshed with the worm.
So set up, make the unable reverse output shaft that drives of cam pulley take place to rotate to make output gear be the completion that can be fine switching that slides.
In conclusion, the invention has the following beneficial effects: has the effect of reducing the energy consumption of equipment operation.
Drawings
FIG. 1 is a schematic overall structure diagram of the first embodiment;
FIG. 2 is a schematic structural diagram of a transmission mechanism according to an embodiment
FIG. 3 is a schematic view showing the development of the slide groove and the slide groove in the first embodiment
FIG. 4 is a schematic view of the overall structure of the second embodiment;
FIG. 5 is a schematic structural view of a shifting mechanism in accordance with a second embodiment;
FIG. 6 is a schematic structural view of a stepped shaft according to a second embodiment.
In the figure, 100, sewing machine motor; 110. an upper shaft; 120. a lower shaft; 130. a cam pulley; 140. a guide frame; 200. a speed change mechanism; 210. an input shaft; 211. an input gear; 212. a drive gear; 213. a driven gear; 214. a helical gear; 220. an output shaft; 221. an output gear; 230. an output dial arm; 240. shifting; 241. a rotating member; 242. a limiting shaft; 243. a chute; 244. a sliding groove; 245. a station groove; 246. a guide groove; 250. a drive shaft; 251. fixing a transmission gear; 252. a movable transmission gear; 260. a transmission shifting arm; 270. a drive chain; 271. a guide sprocket; 272. a tension sprocket; 280. a guide assembly; 281. a mounting seat; 282. a push rod; 283. a push gear; 284. a first worm gear; 285. a first worm; 286. a stepped shaft; 287. a limit nut; 290. a tension assembly; 291. a tensioning arm; 292. a torsion spring; 310. a worm; 320. a worm gear.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1: a low-energy-consumption sewing machine is shown in figure 1 and comprises a sewing machine motor 100, a cam pulley 130, an upper shaft 110, a lower shaft 120 and a speed change mechanism 200, wherein the sewing machine motor 100, the cam pulley 130, the upper shaft 110, the lower shaft 120 and the speed change mechanism 200 are arranged in the sewing machine, the sewing machine motor 100 and the upper shaft 110 are in transmission connection through a belt, the upper shaft 110 and the lower shaft 120 are in transmission connection through the belt, the upper shaft 110 is used for driving a needle to move up and down, and the lower shaft 120 is used for driving a shuttle to rotate.
As shown in fig. 1 and 2, the transmission mechanism 200 includes an input shaft 210, an input gear 211, an output shaft 220, an output gear 221, an output arm 230, a dial 240, a transmission shaft 250, a fixed transmission gear 251, a movable transmission gear 252, and a transmission arm 260.
The input shaft 210, the output shaft 220 and the transmission shaft 250 are rotatably connected inside the sewing machine, and the input shaft 210, the output shaft 220 and the transmission shaft 250 are arranged in parallel. The input shaft 210 is disposed in parallel with the lower shaft 120, the lower shaft 120 is provided with a drive gear 212, and the input shaft 210 is provided with a driven gear 213 that meshes with the drive gear 212. The input gears 211 are provided in two numbers, the two input gears 211 have different diameters, and both the two input gears 211 are fixedly mounted on the input shaft 210.
Two movable transmission gears 252 are arranged, the two movable transmission gears 252 are fixedly connected with each other, and are installed on the transmission shaft 250 in an axially sliding and circumferentially positioning manner, the two movable transmission gears 252 can be meshed with the two input gears 211 respectively, and the distance between the two movable transmission gears 252 is smaller than the distance between the two input gears 211.
The number of the fixed transmission gears 251 is two, the diameters of the two fixed transmission gears 251 are different, and both the two fixed transmission gears 251 are fixedly installed on the transmission shaft 250.
The number of the output gears 221 is two, the two output gears 221 have different diameters, and the two output gears 221 are fixedly connected with each other. The two output gears 221 are axially slidably and circumferentially positioned and mounted on the output shaft 220, the distance between the two output gears 221 is smaller than the distance between the two fixed transmission gears 251, and the two fixed transmission gears 251 can be respectively meshed with the two output gears 221. The output shaft 220 is provided with a worm 310 at an end thereof remote from the sewing machine motor 100, and the cam pulley 130 is provided with a worm wheel 320 engaged with the worm 310.
The cross sections of the transmission shaft 250 and the output shaft 220 are both in a plum blossom shape.
The shifting member 240 includes a rotating member 241 and a limiting shaft 242, the rotating member 241 is rotatably connected to the inside of the sewing machine, and one end of the rotating member extends out of the sewing machine for the operator to rotate. The circumferential side wall of the rotating member 241 is provided with a sliding groove 243 and a sliding groove 244, wherein the sliding groove 243 includes two station grooves 245 and two guiding grooves 246, the two station grooves 245 are respectively located on two radial planes of the rotating member 241 and are distributed around the circumferential direction in a staggered manner, and two ends of the guiding groove 246 are respectively connected with end portions of two adjacent station grooves 245.
The sliding groove 244 includes four station grooves 245 and four guiding grooves 246, wherein two ends of the guiding groove 246 are respectively connected with the ends of two adjacent station grooves 245, and referring to fig. 3, the four station grooves 245 and the four guiding grooves 246 on the sliding groove 244 equally divide the circumference, each station groove 245 on the sliding groove 243 occupies 3/8 circumference, and each guiding groove 246 on the sliding groove 243 occupies 1/8 circumference.
The limiting shaft 242 is fixedly installed inside the sewing machine, the output shifting arm 230 and the transmission shifting arm 260 are connected to the limiting shaft 242 in a sliding mode, one end of the output shifting arm 230 is connected to the two output gears 221 in a rotating mode, and the other end of the output shifting arm is inserted into the sliding groove 243. One end of the transmission arm 260 is rotatably connected to the movable transmission gear 252, and the other end is inserted into the sliding groove 244. During the rotation of the rotating member 241, when the output shifting arm 230 finishes sliding in one station slot 245, the transmission shifting arm 260 slides and switches two station slots 245 at night.
The working principle is as follows:
when the sewing machine motor 100 is started, the input shaft 210 and the input gear 211 are driven to rotate, so as to drive the output gear 221 and the output shaft 220 to rotate, and the output shaft 220 rotates to drive the cam pulley 130 to rotate.
When the rotating speed of the cam pulley 130 needs to be adjusted, the rotating member 241 is rotated to rotate a certain angle, so that the output shifting arm 230 and the transmission shifting arm 260 respectively slide on the sliding groove 243 and the sliding groove 244, the output shifting arm 230 and the transmission shifting arm 260 are driven to move along the axial lead direction of the output shaft 220, the output gear 221 and the movable transmission gear 252 are driven to correspondingly slide, the meshing relation between the gears is changed, the transmission ratio is changed, and the rotating speed adjustment of the cam pulley 130 is completed.
Example 2: as shown in fig. 4, the difference from embodiment 1 is that the speed change mechanism 200 includes an input shaft 210, an input gear 211, an output shaft 220, a drive chain 270, a guide sprocket 271, a guide assembly 280, a tension sprocket 272, a tension assembly 290, and a guide frame 140.
The input shaft 210 and the output shaft 220 are rotatably installed inside the sewing machine, wherein the axis of the input shaft 210 is perpendicular to the axis of the lower shaft 120, a helical gear 214 is fixedly installed on the lower shaft 120 and the input shaft 210, and the helical gears 214 on the input shaft 120 and the lower shaft 120 are engaged with each other. The input gear 211 is fixedly mounted on the input shaft 210.
Four output gears 221 are fixedly mounted on the output shaft 220, the four output gears 221 are arranged at equal intervals, and the diameters of the four output gears 221 are gradually increased or decreased along the same axial lead direction of the output shaft 220.
The transmission chain 270 is installed on the input gear 211 and one of the four output gears 221, and the input gear 211 rotates to drive the output gear 221 to rotate through the transmission chain 270. A worm 310 is provided at one end of the output shaft 220, and a worm wheel 320 engaged with the worm 310 is provided on the cam pulley 130.
Referring to fig. 5 and 6, the guide assembly 280 includes a mount 281, a push rod 282, a push gear 283, a first worm gear 284, and a first worm 285.
The guide frame 140 is fixedly installed inside the sewing machine, a square jack is arranged on the guide frame 140, the cross section of the push rod 282 is in a regular quadrangle shape and is inserted into the jack, and the push rod 282 is kept to slide only in the axial direction through the guide frame 140.
The mounting seat 281 is fixedly installed at one end of the push rod 282, and a straight tooth forming rack is provided on a side wall of the push rod 282, and the push gear 283 is engaged with the straight tooth. The rotating shaft of the pushing gear 283 is rotatably connected to the inner wall of the sewing machine, the first worm gear 284 is fixedly installed on the rotating shaft of the pushing gear 283, the first worm 285 is rotatably connected in the sewing machine, the first worm 285 is meshed with the first worm gear 284, and the rotating shaft of the first worm 285 penetrates through the sewing machine and extends out of the sewing machine to form a hand operation part for an operator to operate.
The tensioning assembly 290 comprises a tensioning arm 291 and a torsion spring 292, wherein, with reference to fig. 6, a stepped shaft 286 is provided on the mounting seat 281, the stepped shaft 286 being arranged parallel to the output shaft 220. Three shaft sections with diameters decreasing in sequence are formed on the stepped shaft 286 along the direction far away from the mounting seat 281, the torsion spring 292 is sleeved on the shaft section with the largest diameter, the tensioning arm 291 is sleeved on the shaft section with the medium diameter, and jacks for inserting the torsion arms of the torsion spring 292 are formed in the mounting seat 281 and the tensioning arm 291.
The guide chain wheel 271 is sleeved on the shaft section with the smallest diameter, a threaded section is arranged at the end part of the stepped shaft 286, and a limit nut 287 is connected on the threaded section.
Wherein, the tension sprocket 272 is rotatably connected to one end of the tension arm 291 far away from the mounting seat 281, the tension sprocket 272 and the guide sprocket 271 are arranged in a coplanar manner, and the transmission chain 270 is wound around the tension sprocket 272 and the guide sprocket 271 and meshed with the tension sprocket 272 and the guide sprocket 271.
The working principle is as follows:
when the sewing machine motor 100 is started, the input gear 211 is driven to rotate, the output gear 221, the guide sprocket 271 and the tension sprocket 272 are driven to rotate through the transmission chain 270, and the cam pulley 130 is driven to rotate by the rotation of the output gear 221.
When the rotation speed of the cam pulley 130 needs to be adjusted, the first worm 285 is rotated to drive the worm wheel 320 to rotate, and the push gear 283 is driven to rotate, so that the guide chain wheel 271 is controlled to move along the axis line direction of the output shaft 220, the guide chain wheel 271 is moved to the plane where the larger or smaller output gear 221 is located, and the transmission chain 270 automatically moves to the output gear 221 when moving, so that the transmission ratio can be changed, and the rotation speed of the cam pulley 130 can be adjusted. While the change in diameter of the output gear 221 is supplemented by the tensioning of the tensioning sprocket 272 by the tensioning assembly 290, thereby ensuring tensioning of the drive chain 270.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: equivalent changes made according to the structure, shape and principle of the invention shall be covered by the protection scope of the invention.
Claims (2)
1. The utility model provides a low energy consumption sewing machine, includes sewing machine motor (100) and cam pulley (130), characterized by, still including speed change mechanism (200), speed change mechanism (200) include:
the input shaft (210) is in transmission connection with the sewing machine motor (100);
the input gears (211) are at least provided in two, all the input gears (211) are fixedly arranged on the input shaft (210), and the diameters of all the input gears (211) are different;
the output shaft (220) is arranged in parallel with the input shaft (210), and the output shaft (220) is in transmission connection with the cam belt pulley (130);
the number of the output gears (221) is the same as that of the input gears (211), the diameters of all the output gears (221) are different, all the output gears (221) are fixedly connected, and the output gears (221) are axially slidably and circumferentially positioned and mounted on the output shaft (220);
an output dial arm (230) having one end connected to the output gear (221);
the shifting piece (240) is used for driving the output shifting arm (230) to slide along the axial lead direction of the output shaft (220); the output gear (221) slides on the output shaft (220) along with the output shifting arm (230) to form a plurality of working states, wherein the number of the working states is the same as that of the output gears (221), and a group of output gears (221) are meshed with the input gear (211) in each state;
the shifting piece (240) comprises a rotating piece (241) and a limiting shaft (242), the output shifting arm (230) is connected to the limiting shaft (242) in a sliding mode, a sliding groove (243) with a path changing along the axial lead direction of the rotating piece (241) is formed in the side wall of the rotating piece (241), and one end, far away from the output gear (221), of the output shifting arm (230) is inserted into the sliding groove (243);
the sliding groove (243) comprises station grooves (245) and guide grooves (246), the number of the station grooves (245) is the same as that of the output gears (221), the station grooves (245) are respectively located on different cross sections of the rotating piece (241) and distributed in a staggered mode around the circumferential direction, and the guide grooves (246) are connected with two adjacent station grooves (245);
the speed change mechanism (200) further comprises a transmission shaft (250), two fixed transmission gears (251) which are respectively used for being meshed with the two output gears (221) and two movable transmission gears (252) which are respectively used for being meshed with the input gear (211) are arranged on the transmission shaft (250), the two fixed transmission gears (251) are fixedly installed on the transmission shaft (250), and the two movable transmission gears (252) axially slide and are circumferentially positioned and installed on the transmission shaft (250); the two movable transmission gears (252) are fixedly connected, and a transmission shifting arm (260) for driving the movable transmission gears (252) to slide along the axial direction is arranged between the shifting piece (240) and the movable transmission gears (252);
the number of the input gears (211) is two, the rotating piece (241) is provided with a sliding groove (244) matched with the transmission shifting arm (260), the sliding groove (244) comprises four station grooves (245), and when the output shifting arm (230) finishes sliding in one station groove (245), the transmission shifting arm (260) finishes sliding and switching of the two station grooves (245);
a worm (310) is arranged at one end of the output shaft (220), and a worm wheel (320) meshed with the worm (310) is arranged on the cam pulley (130);
the cross sections of the output shaft (220) and the input shaft (210) are both plum blossom-shaped.
2. Low energy consumption sewing machine according to claim 1, characterized in that: the input shaft (210) is in gear transmission connection or belt transmission connection with a lower shaft (120) on the low-energy-consumption sewing machine, and the lower shaft is used for driving the shuttle to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911417319.3A CN111041724B (en) | 2019-12-31 | 2019-12-31 | Low energy consumption sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911417319.3A CN111041724B (en) | 2019-12-31 | 2019-12-31 | Low energy consumption sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111041724A CN111041724A (en) | 2020-04-21 |
| CN111041724B true CN111041724B (en) | 2022-06-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911417319.3A Active CN111041724B (en) | 2019-12-31 | 2019-12-31 | Low energy consumption sewing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN111041724B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2320634Y (en) * | 1997-12-29 | 1999-05-26 | 鑫昱兴业有限公司 | Taking up and thread-feeding variable-speed device for circular knitting machine |
| CN102172842A (en) * | 2011-03-07 | 2011-09-07 | 大连佐佐木专用设备制造有限公司 | Gearbox capable of changing one input into four outputs |
| JP6392551B2 (en) * | 2014-06-06 | 2018-09-19 | 蛇の目ミシン工業株式会社 | sewing machine |
| CN103994219B (en) * | 2014-06-13 | 2016-04-06 | 岑益南 | Energy-conservation vehicle gearbox |
| JP6475507B2 (en) * | 2015-02-18 | 2019-02-27 | 蛇の目ミシン工業株式会社 | sewing machine |
| CN205001455U (en) * | 2015-08-06 | 2016-01-27 | 群胜科技（苏州）有限公司 | Speed change gear of electric tool gear box |
| JP6660692B2 (en) * | 2015-09-11 | 2020-03-11 | 蛇の目ミシン工業株式会社 | sewing machine |
| CN105605179B (en) * | 2015-11-14 | 2019-02-12 | 马平 | A kind of three class gear shift gear-box |
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2019
- 2019-12-31 CN CN201911417319.3A patent/CN111041724B/en active Active
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| CN111041724A (en) | 2020-04-21 |
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