CN110284274A - A kind of rotating head structure of sewing machine - Google Patents
A kind of rotating head structure of sewing machine Download PDFInfo
- Publication number
- CN110284274A CN110284274A CN201910717336.2A CN201910717336A CN110284274A CN 110284274 A CN110284274 A CN 110284274A CN 201910717336 A CN201910717336 A CN 201910717336A CN 110284274 A CN110284274 A CN 110284274A
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- Prior art keywords
- bearing
- motor
- head
- annular
- mounting base
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- 238000009958 sewing Methods 0.000 title claims abstract description 25
- 238000009434 installation Methods 0.000 claims description 35
- 238000012546 transfer Methods 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000314 lubricant Substances 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 abstract description 3
- 238000011105 stabilization Methods 0.000 abstract description 3
- 238000005192 partition Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000013461 design Methods 0.000 description 5
- 238000010926 purge Methods 0.000 description 3
- 230000001360 synchronised effect Effects 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/02—Mechanical drives
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/10—Electrical or electromagnetic drives
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
Abstract
The invention discloses a kind of rotating head structures of sewing machine, and including the head mounting base being fixed on sewing machine stand, head mounting base bottom is connected with revolvable head body, and head mounting base is equipped with the first motor of driving head body rotation.The inside of head mounting base is equipped with the annular external gear for driving head body to rotate and the annular bearing for the rotation of pessum external gear.It is formed with motor mounting part at the top of head mounting base, first motor is fixed on motor mounting part, the power output shaft tooth connection wheel shaft of first motor, and the lower end of gear shaft is equipped with the gear part cooperated with annular external gear.First motor preferably uses servo motor, can control head body rotation angle to cater to the feed direction of sewing, guarantees along seam seam quality.The technical program is connect using the annular external gear and annular bearing of platter surface with head body, is enhanced head body rotational stabilization, is improved the rotation angle control precision of head body.
Description
Technical field
The present invention relates to industrial sewing machines, are particularly used for the template sewing machine of pattern design sewing.
Background technique
For the industrial sewing machine of pattern design sewing, when sewing pattern design, frequent oriented all directions are stitched
The case where threading.Commonly the head of pattern design sewing machine is fixed, and eedle moves up and down in the same vertical direction.When
The feeding mechanism of pattern design sewing machine is by cloth to when all directions feeding, some stitchings are along suture mark, some are to backstitch
Stitching causes the inconsistent of seam quality on different directions, serious to will lead to upper thread loose twist, sewing intensity decline, reduces seam
It threads quality.
The patent of invention that number of patent application is 201410197700.4 discloses a kind of independent rotary automatic sewing of driving
The upper head of equipment, including head lifting assembly, head rotating component and nose assembly, head rotating component are fixed on head
On lifting assembly, nose assembly is fixed on the lower part of head rotating component, and head rotating component includes that conducting slip ring, slip ring are fixed
Seat, head mounting plate, head rotating motor, gearbox and rotary shaft, the upper end of rotary shaft couple with conducting slip ring, and drive is led
Electric slip ring rotation；Rotary shaft can drive nose assembly 360 degree rotation clockwise or counterclockwise, and head lifting assembly is revolved by head
Turning component drives nose assembly to move up and down.The patent adapts to the feed direction of cloth, makes style by driving upper head rotating
The sewing thread trace of pattern is all along suture mark, but the patented technology haves the shortcomings that head volume is big, rotational structure is unstable.
Summary of the invention
The technical problem to be solved by the present invention is to be directed to above-mentioned state of the art, and provide a kind of rotation of sewing machine
Handpiece structure improves sewing machine head and rotates control stability.
The technical scheme of the invention to solve the technical problem is: a kind of rotating head structure of sewing machine, packet
The head mounting base being fixed on sewing machine stand is included, head mounting base bottom is connected with revolvable head body, head installation
Seat is equipped with the first motor of driving head body rotation.The inside of head mounting base is equipped with for driving head body to rotate
Annular external gear and for pessum external gear rotation annular bearing.It is formed with motor mounting part at the top of head mounting base,
First motor is fixed on motor mounting part, the power output shaft tooth connection wheel shaft of first motor, the lower end of gear shaft be equipped with
The gear part of annular external gear cooperation.First motor preferably uses servo motor, can control head body rotation angle to meet
The feed direction of joint close material guarantees along seam seam quality.The technical program uses the annular external gear and annular bearing of platter surface
It is connect with head body, enhances head body rotational stabilization, improve the rotation angle control precision of head body.
To optimize above-mentioned technical proposal, the invention also includes following improved technical solutions.
Above-mentioned head mounting base has outside wall portions and circular inner wall part, the peace constituted between outside wall portions and inner wall part
Fill space.Annular external gear and the concentric connection of annular bearing, and be mounted in installation space.
The outer ring of above-mentioned annular bearing is arranged in the side of annular external gear, and annular external gear passes through transfer panel and annular
The outer ring of bearing and head body are fixedly connected.It is fixedly connected in the inner ring of annular bearing with the inner wall part of head mounting base.
The bottom surface of above-mentioned head mounting base is equipped with the sealing element for closing installation space, constitutes lubrication in installation space
Oil pocket.
Bearing holder (housing, cover) is equipped in above-mentioned motor mounting part.Bearing holder (housing, cover) has circular outer wall and circular inner wall.Circular outer wall
The axle center arranged off-centre in axle center and circular inner wall.The driving bearing of guide gear wheel shaft rotation, driving are equipped in the inside of bearing holder (housing, cover)
The axle center of bearing and the axle center arranged off-centre of bearing holder (housing, cover) circular outer wall.
Annular steps are circumferentially formed in the middle part of above-mentioned gear shaft.Drive shaft is contracted first for including and being fixed in bearing holder (housing, cover) and is driven
Dynamic bearing and the second driving bearing.The outer ring bottom surface of first driving bearing is abutted with bearing holder (housing, cover) bottom surface inner wall, the first driving bearing
Inner ring top surface abutted with annular steps.The outer ring top surface of second driving bearing is abutted with motor mount, the second driving bearing
Inner ring bottom surface abutted with annular steps.
Above-mentioned gear shaft has sleeve part, and power output shaft is mounted in sleeve part, and passes through opening collar for sleeve
Portion is fixed with power output shaft.
Above-mentioned annular external gear can be fixedly connected by transfer panel with head body.
Compared with prior art, the rotating head structure of a kind of sewing machine of the invention drives knot using the rotation of optimization
Structure improves head body rotation control stability and accuracy.The gear shaft of first motor connection can jump to avoid bearing, together
When facilitate axle center position, facilitate installation and maintenance.
Detailed description of the invention
Fig. 1 is the schematic perspective view of the embodiment of the present invention.
Fig. 2 is the positive structure schematic of the embodiment of the present invention.
Fig. 3 is the structure schematic diagram of the embodiment of the present invention.
Fig. 4 is the schematic diagram of the section structure of head mounting base in the present embodiment.
Fig. 5 is the assembling decomposition diagram of Fig. 1.
Fig. 6 is the structural schematic diagram of shank part in the present embodiment.
Fig. 7 is the structural schematic diagram of middle presser feet part in the present embodiment.
Fig. 8 is the structural schematic diagram that shank is installed in the present embodiment.
Specific embodiment
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
Fig. 1 to Fig. 8 show structural schematic diagram of the invention.
Appended drawing reference therein are as follows: head mounting base 1, motor mounting part 1a, outside wall portions 1b, inner wall part 1c, first motor
11, annular external gear 12, annular bearing 13, transfer panel 14, gear shaft 15, gear part 15a, annular steps 15b, sleeve part 15c,
Bearing holder (housing, cover) 16, first drives bearing 16a, the second driving bearing 16b, sealing element 17, head body 2, middle presser feet mounting rod 3, the
Two motors 31, the first guide pad 32, the first guide groove 32a, middle presser feet driving crank 33, connecting rod 34, middle presser feet drive bearing
35, middle presser feet link block 36, shank 4, the first shank cover the 401, second shank set 402, third motor 41, the first synchronizing wheel 42,
Main shaft 43, the second synchronizing wheel 44, shank drive synchronous belt 45, needle bar crank 46, crankshaft 47, connecting rod 48, handwheel 49, electric slip ring
5, solenoid valve 51, presser feet mounting rack 52, big presser feet drive cylinder 53, big presser feet disk 54, pressure reducing valve 55, pipeline purging cylinder 56, loose ends
Device drives cylinder 57.
The rotating head structure of a kind of sewing machine of the invention, including the head mounting base 1 being fixed on sewing machine stand, machine
1 bottom of head mounting base is connected with revolvable head body 2, and head mounting base 1 is equipped with first that driving head body 2 rotates
Motor 11.The inside of head mounting base 1 is equipped with the annular external gear 12 for driving head body 2 to rotate and is used for guided rings
The annular bearing 13 that shape external gear 12 rotates.Motor mounting part 1a is formed at the top of head mounting base 1, first motor 11 is fixed on electricity
On machine mounting portion 1a, the lower end of the power output shaft tooth connection wheel shaft 15 of first motor 11, gear shaft 15 is equipped with and annular external tooth
The gear part 15a of 12 cooperation of wheel.
Head mounting base 1 has outside wall portions 1b and circular inner wall part 1c, constitutes between outside wall portions 1b and inner wall part 1c
Installation space.Annular external gear 12 and the concentric connection of annular bearing 13, and be mounted in installation space.In the present invention, machine
Head mounting base 1 using platter surface annular external gear 12 and 2 rotatable engagement of head body, compared with the prior art in worm gear snail
The accuracy and stability of the rotation control of head body 2 can be improved in bar driving method.
In the present embodiment, the outer ring of annular bearing 13 is arranged in the side of annular external gear 12, annular bearing 13 and annular
The coaxial arrangement up and down of external gear 12.Annular external gear 12 connects by the way that transfer panel 14,13 outer ring of annular bearing and head body 2 are fixed
It connects.It is fixedly connected in the inner ring of annular bearing 13 with the inner wall part 1c of head mounting base 1.Transfer panel 14 is for connecting annular shaft
Hold the connector of 13 and head body 2.
The bottom surface of head mounting base 1 is equipped with the sealing element 17 for closing installation space, constitutes lubricating oil in installation space
Chamber.Sealing element 17 can be backbone sealing ring, be marked with lubricating oil in installation space, provide profit for the rotating member in installation space
It is sliding.
Bearing holder (housing, cover) 16 is equipped in motor mounting part 1a.Bearing holder (housing, cover) 16 has circular outer wall and circular inner wall.Circular outer wall
The axle center arranged off-centre in axle center and circular inner wall.The driving bearing that guide gear wheel shaft 15 rotates is equipped in the inside of bearing holder (housing, cover) 16.
Driving bearing is mounted in circular inner wall, drives the axle center of bearing and the axle center arranged off-centre of 16 circular outer wall of bearing holder (housing, cover).Gear
During the installation process, the back lash of gear part 15a and annular external gear 12 is not easily controlled adjustment to axis 15.The present invention is using inclined
The bearing holder (housing, cover) 16 of the heart, rotation axis bearing sleeve 16 during the installation process can subtle 15 axle center of adjustment gear shaft and annular external gear
The distance in 12 axle center keeps the installation of gear shaft 15 and maintenance more convenient to achieve the purpose that adjust back lash.
15 middle part of gear shaft is circumferentially formed with annular steps 15b.Drive shaft contracts first for including and being fixed in bearing holder (housing, cover) 16
Drive the driving of bearing 16a and second bearing 16b.The outer ring bottom surface of first driving bearing 16a is abutted with 16 bottom surface inner wall of bearing holder (housing, cover),
The inner ring top surface of first driving bearing 16a is abutted with annular steps 15b.The outer ring top surface of second driving bearing 16b and motor are pacified
Piece installing abuts, and the inner ring bottom surface of the second driving bearing 16b is abutted with annular steps 15b.First driving bearing 16a and the second driving
Bearing 16b can prevent gear shaft 15 is axial to jump using annular steps 15b structure, improve 2 rotational stabilization of head body,
And the accuracy of rotation angle control.
Gear shaft 15 has sleeve part 15c, and power output shaft is mounted in sleeve part 15c, and will be covered by opening collar
Canister portion 15c is fixed with power output shaft.
In the present embodiment, transfer panel 14 has mounting hole, and annular external gear 12 passes through transfer panel 14 and annular bearing 13
Side wall is fixedly connected, and another side wall of annular bearing 13 is fixedly connected by mounting hole with head body 2.Annular external gear 12 and ring
Shape bearing 13 nested can also be installed, and annular bearing 13 is mounted on the inside of annular external gear 12, and annular external gear 12 passes through again
Transfer panel 14 is fixedly connected with head body 2.
Middle presser foot of the invention moves up and down including middle presser feet mounting rod 3, for presser feet mounting rod 3 in driving
Second motor 31.Second motor 31 is fixed in revolvable head body 2, and the inside of head body 2 is fixed with the first guiding
Block 32, middle presser feet mounting rod 3 are slidably arranged in the first guide groove 32a of the first guide pad 32.The power of second motor 31 is defeated
Presser feet drives crank 33 in axis connection out, and the front end of middle presser feet driving crank 33 is connected by connecting rod 34 and middle presser feet mounting rod 3
It connects.
The both ends of connecting rod 34 are formed respectively with circular hole mounting portion, and middle presser feet driving bearing 35 is fixed in circular hole mounting portion.
The middle presser feet driving bearing 35 of 34 one end of connecting rod and the front end of middle presser feet driving crank 33 are rotatablely connected, the middle presser feet of the other end
The middle presser feet link block 36 on bearing 35 and middle presser feet mounting rod 3 is driven to be rotatablely connected.Presser feet in the both ends setting of connecting rod 34
Bearing 35 is driven, middle presser feet transmission sensitivity can be improved, reduce operation noise.
Middle presser feet link block 36 includes that the collar portion being fixedly connected with middle presser feet mounting rod 3 and middle presser feet drive bearing 35
The interconnecting piece of inner ring connection, the guide part that is slidably matched with the first guide groove (32a).The collar portion of middle presser feet link block 36 covers
It is located on presser feet mounting rod 3, and is screwed.Connecting portion is located at collar portion in the side in collar portion, guide part
The other side.
The inside of the head body 2 has the second motor installation cavity and third motor installation cavity；The second motor peace
The opening behaveing affectedly is located at 2 rear portion of head body, and the opening of the third motor installation cavity is located at 2 front of head body；Described
The installation direction of three motors 41 is opposite with the installation direction of the second motor 31.
Be formed with the second motor installation cavity partition inside head body 2, the second motor 31 be fixed on the second motor installation cavity every
Plate rear, the power output shaft of the second motor 31 passes through the second motor installation cavity partition and the root of middle presser feet driving crank 33 connects
It connects.
Shank structure of the invention, including the shank 4 being set in head body 2 and for driving shank 4 to move up and down
Third motor 41.The power output shaft of third motor 41 is fixed with the first synchronizing wheel 42, is equipped with the master being able to rotate in head body 2
Axis 43,43 rear end of main shaft are fixed with the second synchronizing wheel 44, and the first synchronizing wheel 42 is synchronous by shank driving with the second synchronizing wheel 44
Band 45 connects.
Main shaft 43 is fixedly arranged at the front end with needle bar crank 46, and the output end of needle bar crank 46 passes through crankshaft 47 and connecting rod 48 and shank
4 connections.43 rear end of main shaft is fixed with handwheel 49, and handwheel 49 has clump weight.One end of needle bar crank 46 connects crankshaft 47, another
End has counterweight.Handwheel 49 includes the inner ring connecting with main shaft 43, the outer ring for gripping, the inner ring of handwheel 49 and outer ring it
Between be formed with corresponding clump weight, can be with the rotating property of balancing main shaft 43.
Head body 2 has shank installation cavity, and the top of the shank installation cavity is equipped with the first shank set that can be dismantled
401, the bottom of the shank installation cavity is equipped with the second shank set 402 that can be dismantled；The shank 4 is slidably mounted on the first needle
In rod set 401 and the second shank set 402.First shank set 401 and the second shank set 402 are detachably arranged in head body 2
On, convenient for the installation and removal of shank 4.
Third motor installation cavity partition is formed with inside head body 2, third motor 41 is before third motor installation cavity partition
The power output shaft in portion, third motor 41 passes through third motor installation cavity partition, and in third motor installation cavity partition rear
The connection of first synchronizing wheel 42.Needle bar crank 46 on main shaft 43 is located in front of third motor installation cavity partition, the second synchronizing wheel 44
And handwheel 49 is located at third motor installation cavity partition rear.
The rear portion of head body 2 is formed with the peace for accommodating the first synchronizing wheel 42, shank driving synchronous belt 45, the second synchronizing wheel 44
It behave affectedly.2 rear portion of power output axial direction head body of third motor 41 is installed, and is connect with the first synchronizing wheel 42.
Connecting structure for electrical equipment of the invention, is equipped with electric slip ring 5 in head mounting base 1, and the rotation of electric slip ring 5 is defeated
Outlet is connect with head body 2, and head body 2 is equipped with for controlling pipeline purging cylinder 56, big presser feet driving cylinder 53, loose ends device
Drive the solenoid valve 51 of cylinder 57.
Head body 2 is in rotary course, cylinder and the power supply of motor need of work and gas supply in head body 2, in order to
Supply lines and air supply pipe is avoided to wind, using the connection structure of electric slip ring 5.The gas circuit that electric slip ring 5 exports is divided into multichannel simultaneously
Corresponding solenoid valve 51 is connected, for controlling the work of pipeline purging cylinder 56, big presser feet driving cylinder 53, loose ends device driving cylinder 57
Make.
Big presser feet includes presser feet mounting rack 52, and big presser feet driving cylinder 53 is fixed on presser feet mounting rack 52, and big presser feet drives
The piston rod of cylinder 53 of taking offence is connect with big presser feet disk 54.
Pressure reducing valve 55 is fixed on big presser feet mounting rack 52.Solenoid valve 51 and pressure reducing valve 55 are mounted on head sheet by the present invention
On body 2, electric slip ring 5 can be inputted by a gas circuit, and multichannel is separated into after electric slip ring 5, reduce electric slip ring 5
Input gas circuit.
Highly preferred embodiment of the present invention has illustrated, and the various change or remodeling made by those of ordinary skill in the art are not
It can depart from the scope of the present invention.
Claims (8)
1. the rotating head structure of a kind of sewing machine, including the head mounting base (1) being fixed on sewing machine stand, the head
Mounting base (1) bottom is connected with revolvable head body (2), and head mounting base (1) is equipped with driving head body (2) rotation
First motor (11)；It is characterized in that: the inside of the head mounting base (1) is equipped with for driving the head body (2)
The annular external gear (12) of rotation and the annular bearing (13) rotated for pessum external gear (12)；The head mounting base
(1) top is formed with motor mounting part (1a), and the first motor (11) is fixed on motor mounting part (1a), first motor
(11) power output shaft tooth connection wheel shaft (15), the lower end of the gear shaft (15) is equipped with to be cooperated with annular external gear (12)
Gear part (15a).
2. rotating head structure according to claim 1, it is characterized in that: the head mounting base (1) has outside wall portions
(1b) and circular inner wall part (1c), the installation space constituted between the outside wall portions (1b) and inner wall part (1c)；It is described
Annular external gear (12) and annular bearing (13) concentric connection, and be mounted in the installation space.
3. rotating head structure according to claim 2, it is characterized in that: the outer ring of the annular bearing (13) is arranged in
The side of annular external gear (12), the annular external gear (12) by the outer rings of transfer panel (14) and annular bearing (13) and
Head body (2) is fixedly connected；It is fixedly connected in the inner ring of annular bearing (13) with the inner wall part (1c) of head mounting base (1).
4. rotating head structure according to claim 1, it is characterized in that: the bottom surface of the head mounting base (1) is equipped with
For closing the sealing element (17) of installation space, lubricant reservoir is constituted in the installation space.
5. rotating head structure according to claim 1, it is characterized in that: being equipped with bearing in the motor mounting part (1a)
It covers (16)；The bearing holder (housing, cover) (16) has circular outer wall and circular inner wall；The axle center of the circular outer wall and the axis of circular inner wall
Heart arranged off-centre；The driving bearing of guide gear wheel shaft (15) rotation, the drive shaft are equipped in the inside of the bearing holder (housing, cover) (16)
The axle center arranged off-centre in the axle center and bearing holder (housing, cover) (16) circular outer wall held.
6. rotating head structure according to claim 5, it is characterized in that: being circumferentially formed in the middle part of the gear shaft (15)
Annular steps (15b)；The drive shaft is contracted the first driving bearing (16a) and second for including and being fixed in bearing holder (housing, cover) (16) and is driven
Dynamic bearing (16b)；The outer ring bottom surface of first driving bearing (16a) is abutted with bearing holder (housing, cover) (16) bottom surface inner wall, the first driving
The inner ring top surface of bearing (16a) is abutted with annular steps (15b)；The outer ring top surface of second driving bearing (16b) and motor
Installation part abuts, and the inner ring bottom surface of the second driving bearing (16b) is abutted with annular steps (15b).
7. rotating head structure according to claim 1, it is characterized in that: the gear shaft (15) has sleeve part
(15c), the power output shaft are mounted in sleeve part (15c), and by opening collar that sleeve part (15c) and power is defeated
Shaft is fixed.
8. rotating head structure according to claim 1, it is characterized in that: the annular external gear (12) passes through transfer panel
(14) it is fixedly connected with head body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717336.2A CN110284274A (en) | 2019-08-05 | 2019-08-05 | A kind of rotating head structure of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910717336.2A CN110284274A (en) | 2019-08-05 | 2019-08-05 | A kind of rotating head structure of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110284274A true CN110284274A (en) | 2019-09-27 |
Family
ID=68024933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910717336.2A Withdrawn CN110284274A (en) | 2019-08-05 | 2019-08-05 | A kind of rotating head structure of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110284274A (en) |
-
2019
- 2019-08-05 CN CN201910717336.2A patent/CN110284274A/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 315100 Zhejiang city of Ningbo province Yinzhou District Jingu Road No. 219 Applicant after: Shupu Intelligent Technology Co.,Ltd. Address before: 315100 Zhejiang city of Ningbo province Yinzhou District Jingu Road No. 219 Applicant before: NINGBO SUPREME ELECTRONIC MACHINERY Inc. |
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| CB02 | Change of applicant information | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190927 |
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| WW01 | Invention patent application withdrawn after publication |