CN108193392B - Sewing machine capable of adjusting cloth feeding and controlling stitch length - Google Patents
Sewing machine capable of adjusting cloth feeding and controlling stitch length Download PDFInfo
- Publication number
- CN108193392B CN108193392B CN201711449305.0A CN201711449305A CN108193392B CN 108193392 B CN108193392 B CN 108193392B CN 201711449305 A CN201711449305 A CN 201711449305A CN 108193392 B CN108193392 B CN 108193392B
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- Prior art keywords
- cloth feeding
- differential
- motor
- crank
- tooth frame
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/20—Control devices responsive to the number of stitches made
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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
- D05B69/12—Electrical or electromagnetic drives using rotary electric motors
Abstract
The invention relates to the field of sewing machines, and discloses a sewing machine capable of adjusting cloth feeding and controlling stitch length, which comprises a cloth feeding motor (1), a cloth feeding crank (3), a connecting rod (4) and a cloth feeding tooth frame (5), wherein the cloth feeding motor (1) is provided with a motor shaft (2), one end of the cloth feeding crank (3) is arranged on the motor shaft (2), the other end of the cloth feeding crank (3) is connected with the connecting rod (4), and the connecting rod (4) is connected with the cloth feeding tooth frame (5). The invention can reduce the load of the main shaft motor, simplify the internal structure of the sewing machine, is easy to install and maintain, can adapt to different types of sewing machines and various fabrics, greatly improves the working stability, the sewing precision and the sewing efficiency of the sewing machine, and can intuitively and clearly control and adjust the needle pitch.
Description
Technical Field
The invention relates to the field of sewing machines, in particular to a sewing machine capable of adjusting cloth feeding and controlling stitch length.
Background
The sewing machine is indispensable in life for sewing clothes, and the prior cloth feeding mechanism is that a spindle motor drives a cloth feeding shaft through a complex connecting rod crank, and the swing amplitude of the cloth feeding shaft is controlled by a complex needle pitch component, so as to achieve the purposes of feeding cloth and controlling the needle pitch, but has the following defects:
1. the main shaft motor drives the cloth feeding shaft, and the main shaft motor has overlarge load, so that the machine is easily damaged, and the service life is influenced;
2. the complex connecting rod crank drives the cloth feeding shaft, so that the structure is complex, the assembly is complex, and the maintenance is inconvenient.
3. The swing amplitude of the cloth feeding shaft is controlled by a complex needle pitch assembly, the structure is complex, the control and adjustment of the needle pitch are not visual, the precision is low, and the phenomenon of needle pitch displacement can occur during high-speed motion.
Disclosure of Invention
The invention aims to solve the problems and provide a sewing machine which can simplify the structure, is easy to install and maintain, can improve the sewing efficiency and prolongs the service life of the sewing machine.
In order to achieve the purpose, the invention adopts the following technical scheme: the sewing machine capable of adjusting the cloth feeding and controlling the stitch length comprises a cloth feeding motor, a cloth feeding crank, a connecting rod and a cloth feeding tooth frame, wherein a motor shaft is arranged on the cloth feeding motor, one end of the cloth feeding crank is arranged on the motor shaft, the other end of the cloth feeding crank is connected with the connecting rod, and the connecting rod is connected with the cloth feeding tooth frame. The cloth feeding motor drives the cloth feeding tooth frame to move, so that the load of the spindle motor is reduced, a complex connecting rod crank assembly is omitted, the installation and the maintenance are convenient, and the internal space of the sewing machine is saved.
Preferably, the differential mechanism further comprises a differential crank slider and a tooth frame slider, wherein the differential crank slider is arranged on the differential crank, the differential crank slider is connected with the tooth frame slider, and the tooth frame slider is connected with the differential tooth frame. The differential motion is more stable through the connection of the differential crank sliding block and the tooth rack sliding block, and the differential tooth rack can not rotate due to the rotation of the differential crank.
Preferably, the differential mechanism further comprises a differential crank slider and a tooth frame slider, wherein the differential crank slider is arranged on the differential crank, the differential crank slider is connected with the tooth frame slider, and the tooth frame slider is connected with the differential tooth frame. The differential motion is more stable through the connection of the differential crank sliding block and the tooth rack sliding block, and the differential tooth rack can not rotate due to the rotation of the differential crank.
Preferably, the side part of the differential tooth rack is provided with a groove, the height of the groove is greater than that of the tooth rack sliding block, and the sliding block is arranged in the groove. Through the groove, the tooth rack sliding block can be selectively arranged at any position of the groove according to different requirements of different cloth materials, and the swing amplitude of the differential tooth rack is determined.
Preferably, the device further comprises a main shaft, and the motor shaft is parallel to the main shaft. The motor shaft is arranged in parallel with the main shaft, so that the requirement on the inner space of the sewing machine can be reduced.
Preferably, the cloth feeding device further comprises a machine shell, and the cloth feeding motor is arranged on the machine shell.
Preferably, the cloth feeding motor is externally connected with a controller, and the controller controls the rotation speed and the rotation direction. The controller is used for controlling, so that the workload of workers can be effectively reduced, the working stability is improved, and the needle pitch can be intuitively and clearly controlled and adjusted.
Preferably, the motor shaft is provided with a cloth feeding shaft, and the cloth feeding crank and the differential crank are both connected with the cloth feeding shaft. The cloth feeding shaft can adapt to sewing machines of different types, the requirement on the length of a motor shaft is reduced, and the cloth feeding motor is convenient to replace and maintain.
Compared with the prior art, the invention has the advantages that: the load of the spindle motor is reduced, the internal structure of the sewing machine is simplified, the installation and the maintenance are easy, the sewing machine can adapt to different types of sewing machines and various fabrics, the working stability, the sewing precision and the sewing efficiency of the sewing machine are greatly improved, and the needle pitch can be intuitively and clearly controlled and adjusted.
Drawings
Fig. 1 is an exploded view of the present invention.
Fig. 2 is an exploded view of the external controller according to the present invention.
Fig. 3 is another exploded view of the present invention.
The names of the parts indicated by the numerical references in the drawings are as follows: 1-cloth feeding motor, 2-motor shaft, 3-cloth feeding crank, 4-connecting rod, 5-cloth feeding tooth frame, 6-differential crank, 7-differential tooth frame, 8-differential crank slide block, 9-tooth frame slide block, 10-groove, 11-main shaft, 12-controller and 13-cloth feeding shaft.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Example 1
Adjustable work feed and sewing machine of control gauge needle, as figure 1, including work feed motor 1, work feed motor 1 can adopt step motor, and work feed motor 1 is equipped with motor shaft 2, and motor shaft 2 has work feed crank 3 through the fix with screw, and work feed crank 3 passes through screw pin connection connecting rod 4, and connecting rod 4 passes through screw pin connection work feed dental articulator 5. The cloth feeding motor 1 starts the driving motor shaft 2 to do uniform reciprocating angular displacement motion, the motor shaft 2 drives the cloth feeding crank 3 to swing, and the cloth feeding crank 3 converts the swing into the back-and-forth motion of the cloth feeding tooth frame 5 through the connecting rod 4. The cloth feeding tooth frame 5 is driven to move back and forth by the cloth feeding motor 1 to reduce the use of the spindle motor, the load of the spindle motor can be effectively relieved, the service life of the sewing machine is prolonged, if the cloth feeding tooth frame 5 is driven to move back and forth by the spindle motor, a complex connecting rod crank assembly is required to be arranged, the spindle motion of the spindle motor can be converted into the back and forth motion of the cloth feeding tooth frame 5, certain requirements are met on the inner space of the sewing machine, if the cloth feeding tooth frame 5 is directly driven to move by the motor shaft 2, the complex connecting rod crank assembly is reduced, the inner structure of the sewing machine is simplified, and the installation and maintenance are easy.
The motor shaft 2 is also fixed with a differential crank 6 through a screw, the upper end of the differential crank 6 is fixed with a differential crank slider 8 through a screw, the differential crank slider 8 can be set into a square groove at one end, and the other end is cylindrical, wherein the square groove of the differential crank slider 8 is matched and connected with a square column on the differential crank 6, a cylindrical hole is arranged on a dental articulator slider 9, the cylindrical end of the differential slider 8 is connected with the dental articulator slider 9 through the hole, and certainly, the differential slider 8 and the dental articulator slider 9 can also be directly fixed through screws; the other end of the tooth frame sliding block 9 is fixedly connected with a differential tooth frame 7 through a screw, the cloth feeding motor 1 starts to drive the motor shaft 2 to do uniform reciprocating angular displacement motion, the motor shaft 2 drives the differential crank 6 to swing, and the swing of the differential crank 6 drives the differential tooth frame 7 to move back and forth. The motor shaft 2 directly drives the differential tooth frame 7 to move, so that complex connecting rod crank components are reduced, the internal structure of the sewing machine is simplified, and the installation and maintenance are easy.
The feed dog frame 5 is in contact connection with the differential dog frame 7, and the motor shaft 2 drives the feed dog frame 5 and the differential dog frame 7 to perform relative synchronous motion, so that the feed dog frame 5 and the differential dog frame 7 are kept in a motion range to prevent dislocation, the sewing efficiency is improved, and the sewing precision is also improved.
The differential dental articulator 7 can also be provided with a groove 10 on the side part thereof, the height of the groove 10 is larger than that of the dental articulator sliding block 9, the height of the groove 10 refers to the distance from the groove 10 to the top end of the groove 10, the height of the dental articulator sliding block 9 refers to the distance from the dental articulator sliding block 9 to the top end of the dental articulator sliding block 9, the dental articulator sliding block 9 can be clamped or fixed at any position of the groove 10 as required, the positions of the dental articulator sliding block 9 in the groove 10 are different, the differential amplitude of the differential dental articulator 7 is different, namely the forward and backward movement amplitude of the differential dental articulator 7 can be increased by adjusting the height of the dental articulator sliding block 9, and conversely, the differential ratio can be adjusted to adapt to various fabrics.
The horizontal position of the cloth feeding motor 1 is transversely arranged, the motor shaft 2 is arranged in parallel with the main shaft 11, the requirement on the inner space of the sewing machine can be effectively reduced, and the cloth feeding motor 1 is fixed on the shell through screws.
By adjusting the rotation frequency of the feed motor 1, the rotation force of the motor shaft 2 can be well controlled, so that the swing amplitudes of the feed dog 5 and the differential dog 7 can be effectively controlled, and the purpose of controlling the needle pitch is achieved.
As shown in fig. 2, the cloth feeding motor 1 can be externally connected with a controller 12, the controller 12 controls the rotation speed and the forward and reverse rotation directions of the cloth feeding motor 1, the controller 12 can also be simultaneously connected with and controls the motion of the spindle motor, when the controller 12 is connected with and controls the motion of the spindle motor, namely the spindle rotates to enable the teeth to start to be lower than the needle plate, the cloth feeding motor 1 angularly moves to a clockwise dead point and starts to perform anticlockwise angular displacement, when the spindle rotates to enable the teeth to start to be higher than the needle plate, the cloth feeding motor 1 continuously angularly moves to the anticlockwise dead point and starts to perform clockwise angular displacement to complete sewing work, when the spindle rotates to enable the teeth to start to be lower than the needle plate, the cloth feeding motor 1 angularly moves to the anticlockwise dead point and starts to perform anticlockwise angular displacement, realizing reverse feeding.
The controller 12 converts the angular displacement angle of the cloth feeding stepping motor into the needle pitch to visually display data, and the total angular displacement angle is adjusted, namely the needle pitch is adjusted.
Example 2
The technical features of embodiment 2 are substantially the same as those of embodiment 1, except that, as shown in fig. 3, the motor shaft 2 of embodiment 2 is further connected with a cloth feeding shaft 13, and the cloth feeding shaft 13 is directly fixed on the motor shaft 2 by screws, so that the fixation is firmer, and the cloth feeding shaft 13 and the motor shaft 2 can also be fixedly connected by a coupling.
The feed shaft 13 is an extension of the motor shaft 2, still parallel to the main shaft 11.
The feed shaft 13 may also be arranged above or below the motor shaft 2 via a connecting-rod assembly as required. In summary, the above-mentioned embodiments are only preferred embodiments of the present invention, and all equivalent changes and modifications made within the scope of the present invention should be covered by the present invention.
Claims (4)
1. Adjustable work feed and control gauge needle's sewing machine, its characterized in that: comprises a cloth feeding motor (1), a cloth feeding crank (3), a connecting rod (4) and a cloth feeding tooth frame (5), wherein the cloth feeding motor (1) is provided with a motor shaft (2), one end of the cloth feeding crank (3) is arranged on the motor shaft (2), the other end of the cloth feeding crank (3) is connected with the connecting rod (4), the connecting rod (4) is connected with the cloth feeding tooth frame (5), the cloth feeding device also comprises a differential crank (6) and a differential tooth frame (7), one end of the differential crank (6) is arranged on the motor shaft (2), the other end of the differential crank (6) is connected with the differential tooth frame (7), the differential tooth frame (7) is connected with the cloth feeding tooth frame (5), the cloth feeding device also comprises a differential crank sliding block (8) and a tooth frame sliding block (9), the differential crank sliding block (8) is arranged on the differential crank (6), the differential crank sliding block (8) is connected with the tooth frame sliding block (9), and the tooth frame sliding block (9) is connected with the differential tooth, the lateral part of the differential tooth frame (7) is provided with a groove (10), the height of the groove (10) is greater than that of a tooth frame sliding block (9), the tooth frame sliding block (9) is arranged in the groove (10), and a controller (12) for controlling the rotating speed and the rotating direction of the cloth feeding motor (1) is externally connected with the cloth feeding motor.
2. The adjustable feed and control gauge sewing machine of claim 1, wherein: the motor is characterized by further comprising a main shaft (11), and the motor shaft (2) is parallel to the main shaft (11).
3. The adjustable feed and control gauge sewing machine of claim 1, wherein: the cloth feeding machine further comprises a machine shell, and the cloth feeding motor (1) is arranged on the machine shell.
4. The adjustable feed and control gauge sewing machine of claim 1, wherein: a cloth feeding shaft (13) is arranged on the motor shaft (2), and the cloth feeding crank (3) and the differential crank (6) are both connected with the cloth feeding shaft (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711449305.0A CN108193392B (en) | 2017-12-27 | 2017-12-27 | Sewing machine capable of adjusting cloth feeding and controlling stitch length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711449305.0A CN108193392B (en) | 2017-12-27 | 2017-12-27 | Sewing machine capable of adjusting cloth feeding and controlling stitch length |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108193392A CN108193392A (en) | 2018-06-22 |
| CN108193392B true CN108193392B (en) | 2021-06-11 |
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ID=62584832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711449305.0A Active CN108193392B (en) | 2017-12-27 | 2017-12-27 | Sewing machine capable of adjusting cloth feeding and controlling stitch length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108193392B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3642277A1 (en) * | 1986-12-11 | 1988-06-23 | Frankl & Kirchner | ELECTRIC MOTOR DRIVE FOR A SEWING MACHINE, ESPECIALLY AN INDUSTRIAL SEWING MACHINE |
| CN101634085B (en) * | 2008-07-25 | 2012-05-23 | 中国标准缝纫机公司上海惠工缝纫机三厂 | Differential mechanism of motor-direct-drive type lower differential sewing machine |
| CN103469499B (en) * | 2013-09-23 | 2015-04-22 | 星锐缝纫机(嘉兴)有限公司 | Fabric conveying mechanism for back tacking of sewing machine |
| CN205741515U (en) * | 2016-05-10 | 2016-11-30 | 上海富山精密机械科技有限公司 | The needle gage of a kind of sewing machine directly drives controlling organization |
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2017
- 2017-12-27 CN CN201711449305.0A patent/CN108193392B/en active Active
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| CN108193392A (en) | 2018-06-22 |
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Address after: 317502 No.8 Jinxiu Road, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Patentee after: Meiji Technology Group Co.,Ltd. Address before: 317502 Zhongxiang Industrial Zone, Xinhe Town, Wenling City, Taizhou City, Zhejiang Province Patentee before: ZHEJIANG MAQI SEWING MACHINE Co.,Ltd. |
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