CN112281329B - Thread clamping device of sewing machine - Google Patents
Thread clamping device of sewing machine Download PDFInfo
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- CN112281329B CN112281329B CN202011263436.1A CN202011263436A CN112281329B CN 112281329 B CN112281329 B CN 112281329B CN 202011263436 A CN202011263436 A CN 202011263436A CN 112281329 B CN112281329 B CN 112281329B
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- fixedly connected
- plate
- base
- block
- rod
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
- D05B47/04—Automatically-controlled tensioning devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention relates to the technical field of sewing machine equipment, in particular to a thread clamping device of a sewing machine, which comprises a base, wherein the top of the base is provided with a supporting frame, the top of the supporting frame is provided with a clamping mechanism for clamping threads, a damping mechanism is arranged between the supporting frame and the base, and the inner side of the base is provided with an adsorption mechanism for fixing the device. The top plate and the guide plate act to further enhance the stability of the clamping mechanism during operation, and the stability of wire clamping is ensured.
Description
Technical Field
The invention relates to the technical field of sewing machine equipment, in particular to a thread clamping device of a sewing machine.
Background
A sewing machine is a machine that uses one or more stitches to form one or more stitches in a work material, interweaving or stitching one or more layers of the work material together. The sewing machine can sew fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewed stitches are neat, beautiful, flat and firm, and have high sewing speed and convenient use. The sewing machine generally comprises a machine head, a machine base, a transmission mechanism and other parts, wherein the machine head is a main department of the sewing machine, a needle rod is fixedly arranged at the lower end of the machine head, a machine needle is fixedly arranged at the lower end of the needle rod, and sewing materials are sewn through circulation steps of material needling, thread hooking, thread picking, feeding and the like.
The sewing machine is generally provided with a thread clamping device, when the sewing machine works, a thread is clamped by the thread clamping device, so that the thread has proper tightness, at present, the thread clamping device is mostly driven by an electromagnet, an iron core of the electromagnet is connected with a thread clamping pull rod, and the movement of the thread clamping pull rod is controlled by the electromagnet to finish thread tightening or thread loosening; however, in the actual use process, after the electromagnet is electrified, the current changes frequently, so that the magnitude of the magnetic force changes ceaselessly and unstably, further, the electromagnetic thread clamping device cannot maintain stable clamping force during thread clamping, and the unstable tension of the thread causes poor stitch aesthetics and reduces the product quality.
Disclosure of Invention
The present invention is directed to a thread clamping device of a sewing machine to solve the above problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a sewing machine thread clamping device, includes the base, the base top is provided with the carriage, the carriage top is provided with the clamping mechanism who is used for pressing from both sides the line, be provided with damper between carriage and the base, the base inboard is provided with the adsorption apparatus who is used for fixing device.
As a further scheme of the invention: clamping mechanism includes that fixed connection sets up the baffle at both ends top about the carriage, both sides be provided with a plurality of and carriage fixed connection's first clamp between the baffle, first clamp upside is provided with rotates the threaded rod of being connected with the baffle, the left side baffle outside bolted connection is provided with the motor, be connected through gear engagement between motor output and the threaded rod, both ends upside all is provided with the movable block with threaded rod threaded connection about first clamp, the articulated connecting rod that is provided with in movable block bottom, the connecting rod other end is articulated with second clamp, the equal fixed connection in both ends bottom is provided with the deflector with carriage sliding connection about the second clamp.
As a further scheme of the invention: the inner side of the supporting frame is provided with a positioning mechanism, the positioning mechanism comprises a positioning frame arranged on the lower side of the first clamping plate, the positioning frame is fixedly connected and arranged at the bottom of the inner side of the supporting frame, a fixing block fixedly connected with the supporting frame is arranged between the adjacent positioning frames, the left side and the right side of the fixing block are fixedly connected and provided with telescopic rods, the other end of each telescopic rod is fixedly connected and provided with a push plate, the inner side of the positioning frame is rotatably connected and provided with a transmission rod, the outer side of the transmission rod is fixedly connected and provided with a first transmission gear, the first transmission gear is meshed and connected with a first rack arranged on the push plate, the front side and the rear side of the top end of the positioning frame are fixedly connected and provided with fixing plates, the inner side of each fixing plate is, and a second rack is fixedly connected to the outer side of the top plate and is meshed with a second transmission gear fixedly connected to the outer side of the transmission rod.
As a further scheme of the invention: damper includes that fixed connection sets up the supporting shoe at the base top, the inboard sliding connection of supporting shoe is provided with the slide, fixed connection is provided with first spring between slide bottom and the supporting shoe, slide top fixed connection is provided with the slide bar, slide bar top and carriage fixed connection, the supporting shoe left and right sides all is provided with the slider, fixed connection is provided with the second spring between slider and the supporting shoe, the slider bottom with set up at the inboard spacing groove sliding connection of base, the articulated movable rod that is provided with in slider top, the movable rod is kept away from slider one end downside and is provided with the rubber ball with base fixed connection.
As a further scheme of the invention: the utility model discloses a supporting frame, including the carriage, the carriage is provided with the backup pad with base fixed connection, the backup pad inboard is provided with the guide way, the inboard sliding connection of guide way is provided with the guide block with carriage fixed connection.
As a further scheme of the invention: the adsorption device comprises a connecting plate fixedly connected and arranged on the inner side of the base, an air guide groove is formed in the inner side of the connecting plate, a plurality of suckers fixedly connected with the connecting plate are arranged at the bottom of the air guide groove, an air pump is arranged on the top of the connecting plate in a bolted connection mode, an air outlet pipe is fixedly connected between the output end of the air pump and the base, and a valve is arranged on the inner side of the air outlet pipe in a fixedly connected mode.
As a further scheme of the invention: both ends all are provided with a plurality of mounting holes about the base.
Compared with the prior art, the invention has the beneficial effects that:
1. by arranging the clamping mechanism, the motor can control the second clamping plate to lift, the stability of wire clamping can be improved, the problem that the stitch attractiveness is affected due to unstable tension of the suture is avoided, and meanwhile, different wire clamping actions or different wire clamping forces can be realized by controlling the rotating speed, the rotating angle and the output torque of the motor, so that different use requirements are met;
2. by arranging the positioning mechanism, the telescopic rod is utilized to push the push plate, the push plate drives the transmission rod to rotate, so that the top plates positioned on the front side and the rear side of the top end of the positioning frame can extend out towards two sides, the action of the top plates and the guide plates can further enhance the stability of the clamping mechanism during operation, and the stability of wire clamping is ensured;
3. by arranging the damping mechanism, multiple damping can be realized by utilizing the first spring, the second spring and the rubber ball, so that the influence of vibration on the device is reduced, the device is kept stable, and the stability of the device is enhanced;
4. through setting up adsorption apparatus and construct, utilize the air pump to make the sucking disc produce suction, make things convenient for the people to install fixedly to the device, convenience when having strengthened the device and using.
Drawings
FIG. 1 is a schematic view showing a structure of a thread tension device of a sewing machine.
FIG. 2 is a schematic view of a positioning mechanism of a thread tension device of a sewing machine.
Fig. 3 is an enlarged schematic view of a portion a in fig. 1.
FIG. 4 is a perspective view of a positioning mechanism of the thread clamping device of the sewing machine.
In the figure: 1-base, 2-support frame, 3-baffle, 4-first clamp, 5-motor, 6-threaded rod, 7-second clamp, 8-movable block, 9-connecting rod, 10-guide plate, 11-positioning frame, 12-fixed block, 13-telescopic rod, 14-push plate, 15-transmission rod, 16-first transmission gear, 17-limiting block, 18-connecting block, 19-top plate, 20-support plate, 21-guide block, 22-guide groove, 23-rubber ball, 24-movable rod, 25-mounting hole, 26-connecting plate, 27-suction cup, 28-air pump, 29-fixed plate, 30-support block, 31-sliding rod, 32-sliding plate, 33-first spring, 34-a second transmission gear, 35-a second spring, 36-a sliding block and 37-a limiting groove.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
Example 1
Referring to fig. 1-4, in an embodiment of the present invention, a thread clamping device for a sewing machine includes a base 1, a supporting frame 2 is disposed on the top of the base 1, a clamping mechanism for clamping a thread is disposed on the top of the supporting frame 2, a damping mechanism is disposed between the supporting frame 2 and the base 1, and an adsorption mechanism for fixing a device is disposed inside the base 1.
Example 2
In the embodiment, the clamping mechanism comprises baffle plates 3 fixedly connected and arranged at the tops of the left end and the right end of a supporting frame 2, a plurality of first clamping plates 4 fixedly connected with the supporting frame 2 are arranged between the baffle plates 3 at two sides, a threaded rod 6 rotatably connected with the baffle plates 3 is arranged on the upper side of each first clamping plate 4, a motor 5 is arranged on the outer side of the baffle plate 3 at the left side in a bolt connection manner, the output end of the motor 5 is connected with the threaded rod 6 through gear engagement, movable blocks 8 in threaded connection with the threaded rod 6 are arranged on the upper sides of the left end and the right end of each first clamping plate 4, a connecting rod 9 is hinged to the bottom end of each movable block 8, the other end of each connecting rod 9 is hinged to a second clamping plate 7, guide plates 10 in sliding connection with the supporting frame 2 are fixedly connected to the bottoms of the left end and the right end of each second clamping plate, the stability of the thread clamping can be improved, the problem that the stitch attractiveness is influenced due to unstable tension of the thread is avoided, and meanwhile, different thread clamping actions or different thread clamping force can be realized by controlling the rotating speed, the rotating angle and the output torque of the motor 5, so that different use requirements are met.
In this embodiment, a positioning mechanism is disposed on the inner side of the supporting frame 2, the positioning mechanism includes a positioning frame 11 disposed on the lower side of the first clamping plate 4, the positioning frame 11 is fixedly connected to the bottom of the inner side of the supporting frame 2, a fixing block 12 fixedly connected to the supporting frame 2 is disposed between adjacent positioning frames 11, telescopic rods 13 are fixedly connected to the left and right sides of the fixing block 12, a push plate 14 is fixedly connected to the other end of the telescopic rod 13, a transmission rod 15 is rotatably connected to the inner side of the positioning frame 11, a first transmission gear 16 is fixedly connected to the outer side of the transmission rod 15, the first transmission gear 16 is engaged with a first rack disposed on the push plate 14, fixing plates 29 are fixedly connected to the front and rear sides of the top end of the positioning frame 11, a limiting block 17 is slidably connected to the inner side of the fixing plates 29, a top plate 19, fixed connection is provided with connecting block 18 between roof 19 and stopper 17, roof 19 outside fixed connection is provided with the second rack, the second rack is connected with the second drive gear 34 meshing that fixed connection set up in the transfer line 15 outside, through setting up positioning mechanism, utilizes telescopic link 13 to promote push pedal 14, and push pedal 14 drives transfer line 15 and rotates and to make the roof 19 that is located 11 top front and back both sides stretch out to both sides, and roof 19 and deflector 10 effect can further strengthen the stability when clamping mechanism moves, have guaranteed the stability of pressing from both sides line.
In this embodiment, the damping mechanism includes a supporting block 30 fixedly connected to the top of the base 1, a sliding plate 32 is slidably connected to the inner side of the supporting block 30, a first spring 33 is fixedly connected between the bottom end of the sliding plate 32 and the supporting block 30, a sliding rod 31 is fixedly connected to the top of the sliding plate 32, the top end of the sliding rod 31 is fixedly connected to the supporting frame 2, sliders 36 are disposed on the left and right sides of the supporting block 30, a second spring 35 is fixedly connected between the sliders 36 and the supporting block 30, the bottom end of the slider 36 is slidably connected to a limiting groove 37 disposed on the inner side of the base 1, a movable rod 24 is hinged to the top end of the slider 36, a rubber ball 23 fixedly connected to the base 1 is disposed on the lower side of one end of the movable rod 24 away from the slider 36, and multiple damping can be achieved by the first spring 33, the second spring 35, thereby reducing the influence of vibration on the device, keeping the device stable and enhancing the stability of the device.
In this embodiment, the left and right sides of the supporting frame 2 are provided with supporting plates 20 fixedly connected with the base 1, the inner sides of the supporting plates 20 are provided with guide grooves 22, and the inner sides of the guide grooves 22 are slidably connected with guide blocks 21 fixedly connected with the supporting frame 2.
In this embodiment, adsorption apparatus constructs including fixed connection sets up the connecting plate 26 in base 1 inboard, connecting plate 26 inboard is provided with the air guide groove, the air guide groove bottom is provided with a plurality of sucking discs 27 with connecting plate 26 fixed connection, connecting plate 26 top bolted connection is provided with air pump 28, fixed connection is provided with the outlet duct between 28 outputs of air pump and the base 1, the inboard fixed connection of outlet duct is provided with the valve, through setting up adsorption apparatus and constructing, utilizes air pump 28 to make sucking disc 27 produce suction, and convenient people installs fixedly the device, has strengthened the convenience when the device uses.
In this embodiment, the left and right ends of the base 1 are provided with a plurality of mounting holes 25.
The working principle of the invention is as follows: the second clamping plate 7 can be controlled to lift by the motor 5, the problem that the stitch attractiveness is affected due to unstable thread tension can be avoided by controlling the rotation speed, the rotation angle and the output torque of the motor 5, different thread clamping actions or thread clamping force can be realized, different use requirements can be met, the push plate 14 is pushed by the telescopic rod 13, the push plate 14 drives the transmission rod 15 to rotate, so that the top plates 19 positioned on the front side and the rear side of the top end of the positioning frame 11 can extend towards two sides, the stability of the clamping mechanism in operation can be further enhanced by the action of the top plates 19 and the guide plate 10, the stability of thread clamping is ensured, the suction disc 27 is enabled to generate suction by the air pump 28, the device is convenient to install and fix by people, the convenience of the device in use is enhanced, multiple shock absorption can be realized by the first spring 33, the second spring 35 and the rubber ball, thereby reducing the influence of vibration on the device, keeping the device stable and enhancing the stability of the device.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several variations and modifications without departing from the concept of the present invention, and these should be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the utility of the patent.
Claims (5)
1. A thread clamping device of a sewing machine comprises a base (1) and is characterized in that a supporting frame (2) is arranged at the top of the base (1), a clamping mechanism for clamping threads is arranged at the top of the supporting frame (2), a damping mechanism is arranged between the supporting frame (2) and the base (1), an adsorption mechanism for a fixing device is arranged on the inner side of the base (1), the clamping mechanism comprises baffle plates (3) fixedly connected to the tops of the left and right ends of the supporting frame (2), a plurality of first thread clamping plates (4) fixedly connected with the supporting frame (2) are arranged between the baffle plates (3) on the two sides, a threaded rod (6) rotatably connected with the baffle plates (3) is arranged on the upper side of each first thread clamping plate (4), a motor (5) is arranged on the outer side of the baffle plate (3) in a bolt connection mode on the left side, and the output end of the motor (5) is connected with the threaded, the upper sides of the left end and the right end of the first clamp plate (4) are respectively provided with a movable block (8) in threaded connection with a threaded rod (6), the bottom of the movable block (8) is hinged with a connecting rod (9), the other end of the connecting rod (9) is hinged with a second clamp plate (7), the bottoms of the left end and the right end of the second clamp plate (7) are respectively fixedly connected with a guide plate (10) in sliding connection with a support frame (2), the inner side of the support frame (2) is provided with a positioning mechanism, the positioning mechanism comprises a positioning frame (11) arranged on the lower side of the first clamp plate (4), the positioning frame (11) is fixedly connected with the bottom of the inner side of the support frame (2), a fixed block (12) fixedly connected with the support frame (2) is arranged between the adjacent positioning frames (11), and the left side and the right side of the fixed block (12) are, the other end of the telescopic rod (13) is fixedly connected with a push plate (14), the inner side of the positioning frame (11) is rotatably connected with a transmission rod (15), a first transmission gear (16) is fixedly connected and arranged at the outer side of the transmission rod (15), the first transmission gear (16) is meshed and connected with a first rack arranged on the push plate (14), the front side and the rear side of the top end of the positioning frame (11) are fixedly connected with fixing plates (29), a limiting block (17) is slidably connected to the inner side of the fixing plate (29), a top plate (19) is arranged on one side, close to the transmission rod (15), of the limiting block (17), a connecting block (18) is fixedly connected between the top plate (19) and the limiting block (17), and a second rack is fixedly connected to the outer side of the top plate (19), and the second rack is meshed and connected with a second transmission gear (34) fixedly connected to the outer side of the transmission rod (15).
2. The thread clamping device of the sewing machine according to claim 1, wherein the damping mechanism comprises a supporting block (30) fixedly connected and arranged at the top of the base (1), a sliding plate (32) is slidably connected and arranged at the inner side of the supporting block (30), a first spring (33) is fixedly connected and arranged between the bottom end of the sliding plate (32) and the supporting block (30), a sliding rod (31) is fixedly connected and arranged at the top of the sliding plate (32), the top end of the sliding rod (31) is fixedly connected with the supporting frame (2), sliding blocks (36) are arranged at the left side and the right side of the supporting block (30), a second spring (35) is fixedly connected and arranged between the sliding block (36) and the supporting block (30), the bottom end of the sliding block (36) is slidably connected with a limiting groove (37) arranged at the inner side of the base (1), and a movable rod (24) is, and a rubber ball (23) fixedly connected with the base (1) is arranged at the lower side of one end, far away from the sliding block (36), of the movable rod (24).
3. The thread clamping device of sewing machine according to claim 2, characterized in that the supporting plate (20) fixedly connected with the base (1) is arranged on each of the left and right sides of the supporting frame (2), a guiding groove (22) is arranged on the inner side of the supporting plate (20), and a guiding block (21) fixedly connected with the supporting frame (2) is arranged on the inner side of the guiding groove (22) in a sliding connection manner.
4. The thread clamping device of the sewing machine according to claim 1, wherein the adsorption mechanism comprises a connecting plate (26) fixedly connected and arranged on the inner side of the base (1), an air guide groove is arranged on the inner side of the connecting plate (26), a plurality of suckers (27) fixedly connected with the connecting plate (26) are arranged at the bottom of the air guide groove, an air pump (28) is arranged at the top of the connecting plate (26) in a bolted connection manner, an air outlet pipe is fixedly connected and arranged between the output end of the air pump (28) and the base (1), and a valve is fixedly connected and arranged on the inner side of the air outlet pipe.
5. A sewing machine thread clamping device according to claim 4, wherein the base (1) is provided with a plurality of mounting holes (25) at both left and right ends.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011263436.1A CN112281329B (en) | 2020-11-12 | 2020-11-12 | Thread clamping device of sewing machine |
| PCT/CN2020/130686 WO2022099766A1 (en) | 2020-11-12 | 2020-11-21 | Thread clamping device of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011263436.1A CN112281329B (en) | 2020-11-12 | 2020-11-12 | Thread clamping device of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112281329A CN112281329A (en) | 2021-01-29 |
| CN112281329B true CN112281329B (en) | 2021-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011263436.1A Active CN112281329B (en) | 2020-11-12 | 2020-11-12 | Thread clamping device of sewing machine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112281329B (en) |
| WO (1) | WO2022099766A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112281329B (en) * | 2020-11-12 | 2021-06-25 | 吴江市中盛机械有限公司 | Thread clamping device of sewing machine |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002066181A (en) * | 2000-08-30 | 2002-03-05 | Brother Ind Ltd | Sewing machine |
| JP2003038880A (en) * | 2001-07-30 | 2003-02-12 | Juki Corp | Tension device of sewing machine |
| JP2007202679A (en) * | 2006-01-31 | 2007-08-16 | Juki Corp | Thread tension device of sewing machine |
| JP2009142378A (en) * | 2007-12-12 | 2009-07-02 | Juki Corp | Thread tension guide of sewing machine |
| CN102031647B (en) * | 2009-09-29 | 2013-10-23 | 兄弟工业株式会社 | Thread clamping device of sewing machine |
| CN107904802B (en) * | 2017-10-30 | 2020-07-07 | 安徽省萧县徽星机械制造有限公司 | Sewing mechanism operation surface horizontal holding mechanism for quilt sewing machine |
| CN207814324U (en) * | 2017-12-29 | 2018-09-04 | 广东华锐动力科技有限公司 | A kind of noise insulation equipment damping |
| CN109454166A (en) * | 2018-10-31 | 2019-03-12 | 大连函量科技发展有限公司 | A kind of damping of mold |
| CN109736024B (en) * | 2019-01-14 | 2022-01-07 | 杭州若有所思服饰有限公司 | Sewing machine for spinning |
| CN209930713U (en) * | 2019-05-04 | 2020-01-10 | 寻乌县香泰网络科技有限公司 | Converter for network science and technology with clamping function |
| CN211147458U (en) * | 2019-12-06 | 2020-07-31 | 贵州星圆矿山技术服务有限公司 | High-efficient ware that splits that sends convenient to remove |
| CN211657476U (en) * | 2020-02-04 | 2020-10-13 | 四川九五一七实业有限公司 | Clamping device for garment processing |
| CN111730558A (en) * | 2020-06-05 | 2020-10-02 | 杨会军 | Supporting device for computer maintenance |
| CN111648056B (en) * | 2020-07-10 | 2022-02-11 | 杰克缝纫机股份有限公司 | Electronic thread clamping device and sewing machine |
| CN111872440A (en) * | 2020-07-31 | 2020-11-03 | 苏州卓罗智能科技有限公司 | Drilling device for processing and producing electronic components |
| CN112281329B (en) * | 2020-11-12 | 2021-06-25 | 吴江市中盛机械有限公司 | Thread clamping device of sewing machine |
-
2020
- 2020-11-12 CN CN202011263436.1A patent/CN112281329B/en active Active
- 2020-11-21 WO PCT/CN2020/130686 patent/WO2022099766A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN112281329A (en) | 2021-01-29 |
| WO2022099766A1 (en) | 2022-05-19 |
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