CN109629124B - Sewing machine and sewing machine needle distance adjusting and limiting device - Google Patents
Sewing machine and sewing machine needle distance adjusting and limiting device Download PDFInfo
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- CN109629124B CN109629124B CN201910002698.3A CN201910002698A CN109629124B CN 109629124 B CN109629124 B CN 109629124B CN 201910002698 A CN201910002698 A CN 201910002698A CN 109629124 B CN109629124 B CN 109629124B
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- transmission assembly
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/22—Work-feeding means with means for setting length of stitch
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- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
本发明公开了一种缝纫机以及缝纫机针距调节限位装置，缝纫机针距调节限位装置包括：针距调节组件，包括第一驱动器，第一驱动器通过第一传动组件连接有导杆，导杆用于带动针距调节小连杆运动，导杆滑动连接于导套中，第一驱动器用于通过第一传动组件带动导杆在导套中直线运动；限位组件，包括第二驱动器，第二驱动器通过第二传动组件连接有限位杆，限位杆用于在第二驱动器的驱动下运动，以锁定或解锁第一传动组件。采用第一驱动器与第二驱动器对应控制针距调节过程以及针距调节后的锁定过程，效率较高，缝纫机针距调节与限位过程的自动化程度较高。
The invention discloses a sewing machine and a stitch length adjustment limiting device for the sewing machine. The stitch length adjusting limiting device for the sewing machine comprises: a stitch length adjusting component, including a first driver, the first driver is connected with a guide rod through the first transmission component, and the guide rod It is used to drive the movement of the small connecting rod for adjusting the needle distance. The guide rod is slidably connected to the guide sleeve. The first driver is used to drive the guide rod to move linearly in the guide sleeve through the first transmission assembly. The two drivers are connected with a limit rod through the second transmission assembly, and the limit rod is used to move under the driving of the second driver to lock or unlock the first transmission assembly. The first driver and the second driver are used to control the stitch pitch adjustment process and the locking process after the stitch pitch adjustment correspondingly, so the efficiency is high, and the automation degree of the sewing machine stitch pitch adjustment and limit process is high.
Description
Technical Field
The invention relates to the technical field of sewing equipment, in particular to a sewing machine and a needle distance adjusting and limiting device of the sewing machine.
Background
At present, the needle pitch of an industrial sewing machine is generally manually adjusted by a knob, and after the needle pitch is manually adjusted, a fixing pin is manually inserted to limit the position of a mechanism so as to prevent the needle pitch from changing.
Therefore, how to more efficiently adjust and limit the needle pitch of the sewing machine is a technical problem to be solved by the technical personnel in the field.
Disclosure of Invention
In view of the above, the present invention provides a needle distance adjusting and limiting device for a sewing machine, which can adjust and limit the needle distance of the sewing machine more efficiently. Another object of the present invention is to provide a sewing machine including the above-mentioned needle pitch adjusting and limiting device, which can more efficiently adjust and limit the needle pitch of the sewing machine.
In order to achieve the purpose, the invention provides the following technical scheme:
a sewing machine needle distance adjusting and limiting device comprises:
the needle pitch adjusting assembly comprises a first driver, the first driver is connected with a guide rod through a first transmission assembly, the guide rod is used for driving the small needle pitch adjusting connecting rod to move, the guide rod is connected in the guide sleeve in a sliding mode, and the first driver is used for driving the guide rod to move linearly in the guide sleeve through the first transmission assembly;
and the limiting assembly comprises a second driver, the second driver is connected with a limiting rod through a second transmission assembly, and the limiting rod is used for moving under the driving of the second driver so as to lock or unlock the first transmission assembly.
Preferably, the limiting rod is a limiting screw rod, the limiting screw rod is in threaded fit with a limiting nut, the limiting nut is fixed on the casing, and the limiting nut and the limiting screw rod form a screw rod nut assembly.
Preferably, the first transmission assembly comprises a gear set, and a central rotating shaft of one of the gears is matched with the limiting rod to lock or unlock the first transmission assembly.
Preferably, the gear set comprises a driving gear and a driven gear engaged with the driving gear, a central shaft of the driving gear is fixed to an output shaft of the first driver, and the central rotating shaft is a central shaft of the driven gear; the first transmission assembly further comprises a crank with one end fixedly connected to the central shaft of the driving gear and a connecting rod connected between the other end of the crank and the guide rod.
Preferably, the motion direction of the limiting rod is the radial motion along the central rotating shaft.
Preferably, the central rotating shaft is coaxially and fixedly provided with a ratchet wheel, and the limiting rod is provided with a ratchet which is used for being meshed with the ratchet wheel to lock the central rotating shaft.
Preferably, the first driver and the second driver are both stepping motors, and the first driver and the second driver are respectively connected to the DPS main control board through signals.
Preferably, the second transmission assembly comprises a driving pulley connected to an output shaft of the second driver and a driven pulley connected to the driving pulley through a synchronous belt transmission, and the limiting rod is connected to a central shaft of the driven pulley in a threaded manner.
A sewing machine comprises the sewing machine needle distance adjusting and limiting device.
The invention provides a needle pitch adjusting and limiting device of a sewing machine. The needle pitch adjusting assembly comprises a first driver, the first driver is connected with a guide rod through a first transmission assembly, the guide rod is used for driving the needle pitch adjusting small connecting rod to move, the guide rod is connected in the guide sleeve in a sliding mode, and the first driver is used for driving the guide rod to move linearly in the guide sleeve through the first transmission assembly. The limiting assembly comprises a second driver, the second driver is connected with a limiting rod through a second transmission assembly, and the limiting rod is used for moving under the driving of the second driver so as to lock or unlock the first transmission assembly.
The first driver and the second driver are adopted to correspondingly control the needle pitch adjusting process and the locking process after the needle pitch is adjusted, the efficiency is high, and the automation degree of the needle pitch adjusting and limiting process of the sewing machine is high.
The sewing machine comprising the sewing machine needle distance adjusting and limiting device provided by the invention can more efficiently adjust and limit the needle distance of the sewing machine.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a front view of a needle pitch adjustment and limiting device of a sewing machine according to the present invention;
FIG. 2 is a rear view of the needle pitch adjustment limiting device of the sewing machine according to the present invention;
FIG. 3 is a control diagram of a stepping motor in the needle distance adjusting and limiting device of the sewing machine provided by the invention;
FIG. 4 is a first structural diagram of a sewing machine to which the needle pitch adjustment and limiting device of the sewing machine of the present invention is applied;
FIG. 5 is a second structural view of a sewing machine to which the needle pitch adjustment and limiting device of the sewing machine according to the present invention is applied;
fig. 6 is a structural view of a sewing machine provided by the present invention.
Reference numerals:
1-guide sleeve, 2-guide rod, 3-connecting rod, 4-crank, 5-second driver, 6-first driver, 7-driving pulley, 8-synchronous belt, 9-driven pulley, 10-limiting rod, 11-limiting nut, 12-driving gear, 13-driven gear, 14-central rotating shaft, 15-stepping motor driving plate, 16-main shaft, 17-tooth lifting connecting rod, 18-feeding connecting rod, 19-small needle pitch adjusting connecting rod, 20-tooth rack seat, 21-tooth rack, 22-feed tooth, 23-tooth lifting crank, 24-feeding shaft, 25-tooth lifting shaft, 26-backstitch wrench, 27-large needle pitch adjusting connecting rod, 28-feeding swing rod seat, 29-small feeding connecting rod, 30-feeding crank, 31-DPS main control board.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a sewing machine needle distance adjusting and limiting device which can more efficiently adjust and limit the sewing machine needle distance. The other core of the invention is to provide a sewing machine comprising the sewing machine needle distance adjusting and limiting device, which can more efficiently adjust and limit the needle distance of the sewing machine.
In the description of the present invention, it should be noted that, for convenience of description, the axial direction, the circumferential direction, and the radial direction are all based on the rotation center line of the central rotation shaft. Furthermore, the first and second are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In an embodiment of the needle pitch adjusting and limiting device of the sewing machine of the present invention, please refer to fig. 1 to 6, which includes a needle pitch adjusting assembly and a limiting assembly.
The needle pitch adjusting assembly comprises a first driver 6, the first driver is connected with a guide rod 2 through a first transmission assembly, the guide rod 2 is used for driving a needle pitch adjusting small connecting rod 19 to move, and the guide rod 2 is connected in a guide sleeve 1 in a sliding mode. The first driver 6 is used for driving the guide rod 2 to move linearly in the guide sleeve 1 through the first transmission component, and the movement of the guide rod 2 can drive the small needle pitch adjusting connecting rod 19 to move so as to adjust the needle pitch. The small needle pitch adjusting link 19 is a component for adjusting the needle pitch in the sewing machine, and other components related to the needle pitch adjustment can be referred to in the prior art.
The limiting assembly comprises a second driver 5, the second driver 5 is connected with a limiting rod 10 through a second transmission assembly, and the limiting rod 10 is used for moving under the driving of the second driver 5 so as to lock or unlock the first transmission assembly.
In the embodiment, the first driver 6 and the second driver 5 are adopted to correspondingly control the needle pitch adjusting process and the locking process after the needle pitch is adjusted, the efficiency is high, and the automation degree of the needle pitch adjusting and limiting process of the sewing machine is high.
On the basis of the above embodiment, the limiting rod 10 may specifically be a limiting screw, the limiting screw is in threaded fit with the limiting nut 11, the limiting nut 11 is fixed on the casing, and the limiting screw and the limiting nut 11 form a screw-nut assembly.
In this embodiment, through the spacing of stop nut 11, under the drive of second driver 5, stop screw can carry out linear motion to be close to or keep away from central pivot 14, can die through the screw thread lock between stop screw and the stop nut 11, realize gauge needle adjustment mechanism's reliable braking, guarantee gauge needle's stability, locking is reliable.
Of course, in other embodiments, the stop bar 10 may be a telescopic bar or other structure.
On the basis of the above embodiment, the first transmission assembly may comprise a gear set, and the central rotating shaft 14 of one of the gears is matched with the limiting rod 10 to lock or unlock the first transmission assembly. The transmission precision of gear transmission is higher. When the second driver 5 drives the limiting rod 10 to move towards the central rotating shaft 14 and lock the central rotating shaft 14, the central rotating shaft 14 cannot rotate any more, and accordingly the first transmission assembly is prevented from continuously operating; after the second driver 5 drives the limiting rod 10 to move away from the central rotating shaft 14 to unlock, the central rotating shaft 14 can continue to rotate, and the first transmission assembly can continue to transmit.
On the basis of the above embodiment, the gear set may specifically include a driving gear 12 and a driven gear 13 engaged with the driving gear 12, a central axis of the driving gear is fixed to the output shaft of the first driver 6, and the central rotation shaft 14 is a central axis of the driven gear. Wherein the gear is fixed with its central shaft. Meanwhile, the first transmission assembly further comprises a crank 4 and a connecting rod 3, wherein one end of the crank 4 is fixedly connected to the central shaft of the driving gear, and the connecting rod 3 is connected between the other end of the crank 4 and the guide rod 2. The connecting rod 3 is hinged with the crank 4 and the guide rod 2. The driven gear can be locked through the locking center rotating shaft, and then the driving gear and the crank are locked, so that the small needle pitch adjusting connecting rod 19 is locked.
On the basis of the above embodiment, the movement direction of the limiting rod 10 is the radial movement along the central rotating shaft 14, that is, the limiting rod 10 moves towards or away from the central rotating shaft 14 along the radial direction of the central rotating shaft 14, so that the occupied space of the device in the axial direction of the central rotating shaft 14 can be reduced.
On the basis of the above embodiment, the central rotating shaft 14 may be fixedly provided with a ratchet wheel, and the ratchet wheel and the central rotating shaft 14 are coaxially arranged. The limiting rod 10 can be provided with a ratchet which is used for being meshed with a ratchet wheel to lock the central rotating shaft 14, and the central rotating shaft 14 can be reliably clamped through the matching of the ratchet and the ratchet wheel.
Of course, in other embodiments, the central rotating shaft 14 may be locked by friction force generated by contact with the limiting rod 10 or other means.
On the basis of any one of the above embodiments, the first driver 6 and the second driver 5 can be both stepping motors, the first driver 6 and the second driver 5 are respectively in signal connection with the DPS main control board 31, unified control is performed on the first driver and the second driver through the DPS main control board 31, and the double stepping motors work in a cooperative manner, so that the automation of needle pitch adjustment is realized. Specifically, the first driver 6 and the second driver 5 may be respectively signal-connected to a stepping motor driving board 15, and the stepping motor driving board 15 is signal-connected to the DPS main control board 31.
On the basis of any one of the above embodiments, the second transmission assembly can be a belt transmission assembly, and the transmission smoothness is high.
Specifically, the belt drive assembly may include a driving pulley 7 fixed to an output shaft of the second driver 5 and a driven pulley 9 connected to the driving pulley 7 through a synchronous belt 8, and the stopper rod 10 may be specifically connected to a central shaft of the driven pulley 9 through a thread, and is driven to move linearly through rotation of the driven pulley.
In a specific control process, the first driver 6 drives the driving gear 12, the driving gear 12 drives the driven gear 13, the central rotating shaft 14 is further rotated, the crank 4 drives the connecting rod 3, the connecting rod 3 drives the guide rod 2, the crank 4, the connecting rod 3 and the guide rod 2 form a crank slider assembly, the guide rod 2 makes a linear reciprocating motion in the guide sleeve 1, and the guide rod 2 drives the small needle pitch adjusting connecting rod 19, so that the needle pitch is adjusted. Wherein the stroke of the guide bar 2 can be controlled by controlling the number of steps of the first actuator 6. The second driver 5 drives the driving belt wheel 7, the driving belt wheel 7 drives the driven belt wheel 9 through the synchronous belt 8, the driven belt wheel 9 drives the limiting screw rod, the limiting screw rod can move up and down in the limiting nut 11, and the central rotating shaft 14 is clamped by the aid of a self-locking principle of thread transmission, so that locking of the whole needle pitch adjusting structure is achieved. The first driver 6 and the second driver 5 can be powered off, so that the purposes of protecting the motor, prolonging the service life and saving electric energy are achieved. If the needle pitch needs to be adjusted, the second driver 5 is electrified and runs reversely, the limit screw on the central rotating shaft 14 is loosened, and the first driver 6 performs corresponding needle pitch adjustment.
Of course, in other embodiments, the first and second actuators may also be pneumatic cylinders, hydraulic cylinders, or the like. In addition, the first transmission assembly can also be a belt transmission assembly, and the second transmission assembly can also be a gear transmission assembly.
In addition to the above-mentioned needle pitch adjusting and limiting device for the sewing machine, the invention also provides the sewing machine, which comprises the needle pitch adjusting and limiting device for the sewing machine, specifically, the needle pitch adjusting and limiting device for the sewing machine provided in any one of the above embodiments, and the beneficial effects can be referred to the above embodiments correspondingly. Wherein the guide rod can be hinged with the small needle pitch adjusting connecting rod 19. The structure of other parts of the sewing machine is referred to the prior art, and the description is omitted.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The sewing machine and the needle distance adjusting and limiting device thereof provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910002698.3A CN109629124B (en) | 2019-01-02 | 2019-01-02 | Sewing machine and sewing machine needle distance adjusting and limiting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910002698.3A CN109629124B (en) | 2019-01-02 | 2019-01-02 | Sewing machine and sewing machine needle distance adjusting and limiting device |
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| Publication Number | Publication Date |
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| CN109629124A CN109629124A (en) | 2019-04-16 |
| CN109629124B true CN109629124B (en) | 2021-02-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910002698.3A Active CN109629124B (en) | 2019-01-02 | 2019-01-02 | Sewing machine and sewing machine needle distance adjusting and limiting device |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110923962B (en) * | 2019-12-23 | 2024-12-03 | 杰克科技股份有限公司 | Needle distance adjustment mechanism and sewing machine |
| CN113246191B (en) * | 2021-04-23 | 2023-03-17 | 潍坊职业学院 | Adjustable onion shredding machine |
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| DE3472119D1 (en) * | 1983-02-25 | 1988-07-21 | Microdynamics Inc | A method and apparatus for sewing mitered corners on a split needle bar sewing machine |
| CN202809218U (en) * | 2012-08-28 | 2013-03-20 | 浙江宝石机电股份有限公司 | Adjustment device for stitch length seat of lockstitch sewing machine |
| CN202865566U (en) * | 2012-11-01 | 2013-04-10 | 中国标准缝纫机公司上海惠工缝纫机三厂 | Needle pitch automatic adjusting mechanism of sewing machine |
| CN203440614U (en) * | 2013-05-02 | 2014-02-19 | 新杰克缝纫机股份有限公司 | Control device for needle distance of sewing machine |
| CN205258803U (en) * | 2015-12-29 | 2016-05-25 | 西安标准工业股份有限公司 | Industrial sewing machine with gauge needle is transferred to electron |
| CN207176226U (en) * | 2017-05-18 | 2018-04-03 | 安徽金泰自动化设备有限公司 | A kind of Novel roller car feed mechanism |
| CN108286133A (en) * | 2018-03-23 | 2018-07-17 | 浙江美机缝纫机有限公司 | The close joint device of sewing machine |
| CN108796841A (en) * | 2018-06-29 | 2018-11-13 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
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2019
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3472119D1 (en) * | 1983-02-25 | 1988-07-21 | Microdynamics Inc | A method and apparatus for sewing mitered corners on a split needle bar sewing machine |
| CN202809218U (en) * | 2012-08-28 | 2013-03-20 | 浙江宝石机电股份有限公司 | Adjustment device for stitch length seat of lockstitch sewing machine |
| CN202865566U (en) * | 2012-11-01 | 2013-04-10 | 中国标准缝纫机公司上海惠工缝纫机三厂 | Needle pitch automatic adjusting mechanism of sewing machine |
| CN203440614U (en) * | 2013-05-02 | 2014-02-19 | 新杰克缝纫机股份有限公司 | Control device for needle distance of sewing machine |
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| CN109629124A (en) | 2019-04-16 |
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Application publication date: 20190416 Contract record no.: X2026980003983 Denomination of invention: Sewing machine and sewing machine stitch length adjustment limit device Granted publication date: 20210209 License type: Common License Record date: 20260327 |