CN111873696B - High-strength wheel and production line thereof - Google Patents
High-strength wheel and production line thereof Download PDFInfo
- Publication number
- CN111873696B CN111873696B CN202010722368.4A CN202010722368A CN111873696B CN 111873696 B CN111873696 B CN 111873696B CN 202010722368 A CN202010722368 A CN 202010722368A CN 111873696 B CN111873696 B CN 111873696B
- Authority
- CN
- China
- Prior art keywords
- reinforcing ribs
- wheel
- assembly
- wheels
- section structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
- B60B3/12—Means of reinforcing disc bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G37/00—Combinations of mechanical conveyors of the same kind, or of different kinds, of interest apart from their application in particular machines or use in particular manufacturing processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/90—Devices for picking-up and depositing articles or materials
Abstract
The invention discloses a high-strength wheel and a production line thereof. A production line comprises a conveying line, an assembly table connected with the conveying line, a robot for conveying wheels between the conveying line and the assembly table, and assembly equipment for assembling reinforcing ribs on the wheels, wherein the robot conveys the wheels to the assembly table from the conveying line, and the assembly equipment puts the reinforcing ribs which are vertically superposed into a middle section structure of the wheels one by one. Then, the robot transports the wheel with the reinforcing ribs to a conveying line, and the reinforcing ribs and the wheel are subjected to screw locking by a screw locking machine at the next station. After the reinforcing ribs are loaded at one time, the reinforcing ribs can be automatically assembled to corresponding positions of the wheel one by one, and the assembly efficiency of the wheel is improved.
Description
Technical Field
The invention relates to the technical field of motor vehicle accessories, in particular to a wheel structure and a production line thereof.
Background
The automobile hub has high requirements on mechanical properties, particularly strength and plasticity, radial fatigue and bending fatigue properties and the like, and the performance is often unstable when some aluminum hubs with complex structures are actually produced.
Disclosure of Invention
The technical problems solved by the invention are as follows: the strength of the wheel is improved through the structural improvement of the product.
In order to solve the technical problems, the invention provides the following technical scheme: a high-strength wheel comprises a plurality of spokes, wherein any spoke is provided with a three-section structure, the three-section structure comprises two sections of edge structures and a middle section structure positioned between the two sections of edge structures, the middle section structure is concave, and reinforcing ribs are matched in the middle section structure.
The wheel is an assembled wheel and consists of a wheel body formed by casting and a plurality of reinforcing ribs. Wherein, the three-section structure of any spoke is the integrated casting shaping.
According to the wheel, the strength is improved due to the matching of the reinforcing ribs and the spokes.
As an improvement, one end of the reinforcing rib extends to the bolt hole part of the hub part, and the reinforcing rib is provided with a connecting hole aligned with the bolt hole. When the wheel is mounted on the vehicle body shaft, the bolt is matched with the bolt hole and the connecting hole and then is in threaded connection with the vehicle body shaft, so that the simultaneous connection of the reinforcing rib, the wheel and the vehicle body shaft is realized, the structure is simplified, and the operation is convenient.
A production line comprises a conveying line, an assembly table connected with the conveying line, a robot for conveying wheels between the conveying line and the assembly table, and assembly equipment for assembling reinforcing ribs on the wheels, wherein a rotary positioning seat is arranged on the assembly table, the assembly equipment comprises a lifting mechanism located beside the assembly table, a rotating mechanism arranged on the lifting mechanism, and an assembly main body arranged on the rotating mechanism, the center of the assembly main body is aligned with the center of the rotary positioning seat, and a limiting guide structure and an aligning device are arranged on the assembly main body; the reinforcing ribs superposed up and down are loaded in the limiting guide structure, and the aligning device can control the rotary positioning seat through the control unit so as to realize the vertical alignment of the reinforcing ribs in the limiting guide structure and the middle section structure of the wheel on the rotary positioning seat.
An operator stacks the reinforcing ribs in the limiting guide structure, and the rotating mechanism overturns the assembling main body to enable the reinforcing ribs in the limiting guide structure to face downwards to the rotary positioning seat. The robot transports the wheels from the conveyor line to the assembly station, with the wheels positioned on the rotational positioning seats. When the reinforcing ribs in the limiting guide structure are vertically aligned with the middle section structure of the wheel on the rotary positioning seat, the rotary positioning seat stops rotating, the lifting mechanism drives the assembly main body to descend, the limiting guide structure releases the reinforcing ribs, the reinforcing ribs below the reinforcing ribs are stacked in the middle section structure of the wheel, and then the stacked reinforcing ribs above the reinforcing ribs below the reinforcing ribs are limited by the limiting guide structure and cannot fall. Then, the robot transports the wheel with the reinforcing ribs to a conveying line, and the reinforcing ribs and the wheel are subjected to screw locking by a screw locking machine at the next station.
According to the production line, after the reinforcing ribs are loaded at one time, the reinforcing ribs can be automatically assembled to corresponding positions of the wheels one by one, and the improvement of the wheel assembling efficiency is facilitated.
Drawings
The invention is further described with reference to the accompanying drawings:
FIG. 1 is a schematic view of a production line;
FIG. 2 is a schematic view of the robot 40 of FIG. 1;
FIG. 3 is a schematic view of the mounting apparatus 50 of FIG. 1;
FIG. 4 is a schematic view of the assembly body 53 of FIG. 3;
FIG. 5 is a schematic view of the mounting station 30 of FIG. 1;
FIG. 6 is a schematic view of the wheel 10 (without the reinforcing ribs 20 assembled);
fig. 7 is a schematic view of the wheel 10 (with the reinforcing ribs 20 assembled).
The symbols in the drawings illustrate that:
10. a wheel; 11. a spoke; 12. an edge structure; 13. a middle section structure; 14. bolt holes;
20. reinforcing ribs; 21. connecting holes;
30. an assembly table; 31. a rotary positioning seat; 310. a rotating shaft; 32. a first cylinder; 33. a clamping block;
40. a robot; 41. a three-jaw plate;
50. assembling equipment; 51. a lifting mechanism; 511. a lifting platform; 512. a screw rod; 513. a guide post; 52. a rotation mechanism; 521. a second motor; 522. a turning shaft; 523. a gear transmission mechanism; 53. assembling a main body; 531. a loading slot; 532. a guide rod; 533. a telescopic insertion sheet; 534. an auxiliary guide member; 535. a second cylinder;
61. a first conveyor line; 62. and a second conveyor line.
Detailed Description
With reference to fig. 6 and 7, a high-strength wheel includes a plurality of spokes 11, where any spoke has a three-section structure, the three-section structure includes two edge structures 12 and a middle section structure 13 located between the two edge structures, the middle section structure is concave, and a reinforcing rib 20 is matched in the middle section structure. As an alternative, the number of spokes is five, and accordingly, a wheel is fitted with five reinforcing ribs.
One end of the reinforcing rib 20 extends to the bolt hole 14 of the hub part, and the reinforcing rib is provided with a connecting hole 21 aligned with the bolt hole. The reinforcing ribs can be connected with the wheels through bolts for connecting the wheels with the vehicle body shaft. Because the bolt is connected with the reinforcing rib, the wheel and the vehicle body shaft at the same time, the stability of the connection of the reinforcing rib and the wheel is good, and the reinforcing rib and the wheel are not easy to displace mutually.
One end of the reinforcing rib 20 (the inner end of the reinforcing rib) extending to the bolt hole 14 of the hub is pressed against the hub between two adjacent spokes 11. Compared with the outer end of the reinforcing rib, the inner end of the reinforcing rib is larger and is propped against the hub, so that the strength of the wheel can be enhanced.
Referring to fig. 1, a manufacturing line includes a conveyor line, an assembly station 30 engaged with the conveyor line, a robot 40 for transporting a wheel 10 between the conveyor line and the assembly station, and an assembly apparatus 50 for assembling the reinforcing ribs 20 to the wheel.
As shown in fig. 6, the assembly table 30 is provided with a rotary positioning seat 31, as shown in fig. 3, the assembly apparatus includes a lifting mechanism 51 located beside the assembly table, a rotating mechanism 52 installed on the lifting mechanism, and an assembly main body 53 installed on the rotating mechanism, the center of the assembly main body is aligned with the center of the rotary positioning seat, and the assembly main body is provided with a limiting guide structure and an alignment device; the reinforcing ribs superposed up and down are loaded in the limiting guide structure, and the aligning device can control the rotary positioning seat through the control unit so as to realize that the reinforcing ribs in the limiting guide structure are aligned with the middle section structure 13 of the wheel on the rotary positioning seat up and down.
As shown in fig. 1, the conveyor line includes a first conveyor line 61 and a second conveyor line 62, and the assembly station 30 is located between the first conveyor line and the second conveyor line. The wheel formed by the low-pressure casting equipment is conveyed to the first conveying line, the robot 40 grabs the wheel on the first conveying line to the rotary positioning seat 31 of the assembly table, the rotary positioning seat rotates to drive the wheel on the rotary positioning seat to rotate, and when the middle section structure 13 of the wheel is vertically aligned with the reinforcing rib 20 in the limiting guide structure, the alignment device enables the rotary positioning seat to stop through the control unit. Then, the assembly body 53 is driven by the lifting mechanism 51 to descend, the limiting guide structure releases the reinforcing ribs 20 which are superposed up and down, and after the lowermost reinforcing rib falls in the middle-stage structure 13, the limiting guide structure limits the rest of the reinforcing ribs to descend. Thereafter, the lifting mechanism 51 drives the assembly body to ascend, and the robot 40 grips the wheels to the second conveyor line 62. And a screw locking machine is arranged on the second conveying line (an operator positioned beside the second conveying line can also manually lock screws on the reinforcing ribs and the wheels), and the screws are locked on the reinforcing ribs and the wheels which are assembled together.
Alternatively, as shown in fig. 5, a pair of first cylinders 32 may be disposed on the rotary positioning seat 31, a clamping block 33 is disposed on a piston rod of each first cylinder, and after the robot 40 grabs the wheel 10 onto the rotary positioning seat, the pair of first cylinders is actuated, the pair of clamping blocks clamps the wheel, and the wheel is positioned. And then, the rotary positioning seat rotates again to align the wheel and the reinforcing ribs up and down. The rotary positioning seat 31 is installed on a rotating shaft 310, the rotating shaft is pivoted on the assembling table, and a first motor is arranged at the bottom of the assembling table and drives the rotary positioning seat to rotate. The action of the first motor is controlled by a control unit, and the control unit is electrically connected with the alignment device.
As shown in fig. 4, the limit guide structure includes five loading slots 531 provided on the assembly body 53, a guide bar 532 provided in the loading slots, telescopic tabs 533 mounted on the assembly body at the side walls of the loading slots; a reinforcing rib 20 loaded in each loading slot, the coupling hole 21 of which is engaged with the guide bar 532; each loading groove is at least provided with a telescopic inserting sheet. When the stiffener 20 is loaded into the loading slot 531, the rotation mechanism 52 turns the assembly body 53 upside down, the loading slot is directed upward, the retractable insertion piece 533 is retracted, the operator loads the stiffener into the loading slot, and the stiffener falls down in the loading slot along the guide bar 532. After all five loading slots are fully loaded, the telescopic insert is extended and positioned at the top of a superimposed strong rib in the loading slot. After the rotating mechanism 52 turns the assembling body 53 downward, the retractable inserting piece 533 is located at the lowest part of a stacked reinforcing rib to limit the free fall of the reinforcing rib. When the ribs of the five loading slots are aligned with the five midsection structures 13 of the wheel, the telescoping tabs of all five loading slots are simultaneously retracted and the ribs in the five loading slots simultaneously drop down into the respective aligned midsection structures. The telescoping tab then re-extends, limiting the rib that has fallen above the rib in the midsection structure from falling.
As a modification, an auxiliary guide 534 is provided on a sidewall of the loading slot 531, and the auxiliary guide is in line contact with the reinforcing rib 20 in the loading slot. A superimposed reinforcing rib in any loading slot is in contact with only the pair of auxiliary guides and the guide bar 532, so that a superimposed reinforcing rib is accurately positioned, and the contact area of the reinforcing rib with the pair of auxiliary guides and the guide bar is small, the surface is not easily worn, and the frictional resistance to fall along the loading slot is small.
The aligning device comprises a sensor arranged at one end of the guide bar 532, and the sensor can be selected from the prior art and needs to meet the following requirements: sensing due to distance changes. Such as a distance sensor.
The work flow of the production line is described as follows: the wheel 10 after low-pressure casting is conveyed to a first conveying line 61, when the wheel on the first conveying line approaches to an assembly table 30, a sensor on the first conveying line senses, the sensor sends a signal to a control unit, the control unit controls a robot 40 to act, a three-jaw disc 41 at the tail end of the robot grips the wheel from the first conveying line and places the wheel on a rotary positioning seat 31 of the assembly table, a pressure sensor on the rotary positioning seat is pressed by the wheel to sense, a signal is sent to the control unit, the control unit controls a pair of first air cylinders 32 to act, and a pair of clamping blocks clamp the wheel 10; the pressure sensor on the clamping block is pressed to sense and send a signal to the control unit, the control unit controls the first motor connected with the rotating shaft 310 to rotate, and the wheel rotates along with the rotary positioning seat 31; when the guide bar 532 is aligned up and down with the bolt hole 14 of the wheel, a first distance sensor (different from a second distance sensor described below) at the bottom end of the guide bar senses a change in distance in the detection direction thereof, and sends a signal to the control unit, and the control unit controls the first motor to stop rotating; then, driven by the lifting mechanism 51, the assembly body 53 descends by a fixed displacement (this displacement enables a reinforcing rib at the lowest of the stacked reinforcing ribs to fall in the middle structure 13, and then the retractable inserting piece 533 can be inserted between the reinforcing rib at the lowest and a reinforcing rib above the reinforcing rib), the second distance sensor mounted on the assembly body senses and sends a signal to the control unit, the control unit controls the second cylinder 535 mounted on the side wall of the loading slot 531 to retract, the retractable inserting piece 533 mounted on the second cylinder piston no longer limits the reinforcing rib, a reinforcing rib at the lowest of the stacked reinforcing ribs falls in the middle structure 13 of the wheel, synchronously, the second cylinders 535 of all five loading slots retract, and the reinforcing rib at the lowest of all five loading slots falls in the corresponding middle structure; under the control of the delayer (or under the control of a program in a control unit memory), resetting of the second cylinder 535 and ascending and resetting of the lifting mechanism driving assembly body are completed in sequence; after the assembly body is lifted and reset, because the movable part of the lifting mechanism triggers the corresponding sensor, or the assembly body triggers the corresponding sensor, under the control of the control unit, the first motor connected with the rotating shaft 310 is reset, the first air cylinder 32 is reset, the clamping block 33 releases the wheel, and the robot 40 acts to grab the wheel to the second conveying line 62.
Alternatively, as shown in fig. 3 and 4, the lifting mechanism 51 is a screw mechanism, a screw nut of the screw mechanism is connected to the lifting platform 511, and the lifting platform is driven by the screw 512 to move downwards by the guide posts 513. The rotating mechanism 52 is installed on the lifting platform, the rotating mechanism comprises a second motor 521 and a gear transmission mechanism 523 connected with the second motor and the turning shaft 522, and the assembling body 52 is installed on the turning shaft. Only after the reinforcing ribs in the loading slot 531 are used up, the operator controls the second motor to operate, so that the assembly body is turned over by 180 degrees, and the reinforcing ribs are loaded into the loading slot.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description herein, since various changes and modifications can be made in the details of the embodiment and the application range according to the spirit of the present invention.
Claims (3)
1. A production line of high-strength wheels comprises a conveying line, an assembly table (30) connected with the conveying line, a robot (40) for conveying wheels (10) between the conveying line and the assembly table, and assembly equipment (50) for assembling reinforcing ribs (20) of the high-strength wheels to the wheels, wherein rotary positioning seats (31) are arranged on the assembly table;
the high-strength wheel comprises a plurality of spokes (11), any spoke is provided with a three-section structure, the three-section structure comprises two sections of edge structures (12) and a middle section structure (13) positioned between the two sections of edge structures, the middle section structure is concave, and reinforcing ribs (20) are matched in the middle section structure; one end of the reinforcing rib (20) extends to the bolt hole (14) of the hub part, and a connecting hole (21) aligned with the bolt hole is formed in the reinforcing rib;
the method is characterized in that: the assembling equipment comprises a lifting mechanism (51) positioned beside the assembling table, a rotating mechanism (52) arranged on the lifting mechanism and an assembling main body (53) arranged on the rotating mechanism, wherein the center of the assembling main body is aligned with the center of the rotary positioning seat, and the assembling main body is provided with a limiting guide structure and an aligning device; reinforcing ribs superposed up and down are loaded in the limiting guide structure, and the aligning device can control the rotary positioning seat through the control unit so as to realize that the reinforcing ribs in the limiting guide structure are vertically aligned with a middle section structure (13) of a wheel on the rotary positioning seat;
the limiting guide structure comprises a plurality of loading grooves (531) arranged on the assembly main body (53), guide rods (532) arranged in the loading grooves, and telescopic insertion sheets (533) which are arranged on the assembly main body and are positioned on the side walls of the loading grooves; the number of loading slots is the same as that of the spokes (11), and a reinforcing rib (20) loaded in each loading slot has a connecting hole (21) matched with the guide rod (532); each loading groove is provided with at least one telescopic inserting sheet.
2. A production line for high-strength vehicle wheels as claimed in claim 1, wherein: auxiliary guide parts (534) are provided on the side walls of the loading groove (531), and the auxiliary guide parts are in line contact with the reinforcing ribs (20) in the loading groove.
3. A production line for high-strength vehicle wheels as claimed in claim 1, wherein: the alignment device comprises a sensor arranged at one end of the guide rod (532).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010722368.4A CN111873696B (en) | 2020-07-24 | 2020-07-24 | High-strength wheel and production line thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010722368.4A CN111873696B (en) | 2020-07-24 | 2020-07-24 | High-strength wheel and production line thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111873696A CN111873696A (en) | 2020-11-03 |
| CN111873696B true CN111873696B (en) | 2022-10-21 |
Family
ID=73200250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010722368.4A Active CN111873696B (en) | 2020-07-24 | 2020-07-24 | High-strength wheel and production line thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111873696B (en) |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4091093B2 (en) * | 2006-02-03 | 2008-05-28 | 豊田合成株式会社 | Vehicle wheel |
| CN201095274Y (en) * | 2007-09-07 | 2008-08-06 | 陈伟明 | Vehicle wheel hub |
| KR101523405B1 (en) * | 2007-10-19 | 2015-05-27 | 토피 고교 가부시키가이샤 | Vehicle wheel |
| US9815323B2 (en) * | 2014-07-24 | 2017-11-14 | Superior Industries International, Inc. | Cast aluminum wheel |
| CN204687721U (en) * | 2015-04-02 | 2015-10-07 | 保定市立中车轮制造有限公司 | A kind of spoke reinforcing rib structure of aluminum-alloy wheel |
| CN105109272B (en) * | 2015-08-14 | 2017-07-11 | 浙江金固股份有限公司 | A kind of asymmetric high air vent car wheel structure |
| EP3397506B1 (en) * | 2015-12-30 | 2021-07-21 | Maxion Wheels U.S.A. LLC | Fabricated vehicle wheel, wheel disc for use in such a fabricated vehicle wheel and method for producing such a wheel disc and fabricated vehicle wheel |
| CN209634166U (en) * | 2018-12-12 | 2019-11-15 | 浙江康顺工贸有限公司 | A kind of high load automotive hub |
| CN211000740U (en) * | 2019-06-18 | 2020-07-14 | 唐山学院 | Wheel made of high tensile strength hot-rolled bainite dual-phase steel |
| CN110481238A (en) * | 2019-09-06 | 2019-11-22 | 江苏师范大学 | A kind of automotive hub with crash |
-
2020
- 2020-07-24 CN CN202010722368.4A patent/CN111873696B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN111873696A (en) | 2020-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109719487B (en) | Bearing press-in machine assembly | |
| CN111873696B (en) | High-strength wheel and production line thereof | |
| KR101422748B1 (en) | Apparatus for loading of spare tire | |
| CN111590815A (en) | Notebook drain pan material loading positioning device | |
| CN113184182B (en) | Intelligent unmanned aerial vehicle for taking and placing express | |
| CN112722867A (en) | Tray disassembling and stacking mechanism for tray taking through telescopic fork of fork plate | |
| CN219116334U (en) | Separating device | |
| KR20190045756A (en) | Automated fastening parts setting device for mounting tires in production vehicles | |
| CN209796621U (en) | Climbing mechanism matched with three-dimensional vision system of robot to feed workpiece | |
| CN110202389A (en) | A kind of production line of intelligent machining molding clutch housing | |
| CN111043918B (en) | Automatic medicine equipment of scraping of warhead | |
| CN215548124U (en) | Automatic push down location side pushes away locking device | |
| CN214977100U (en) | Automatic flat-beating machine | |
| CN108453182B (en) | Full-automatic connecting rod spare riveting machine | |
| CN107150276A (en) | A kind of drawing mechanism of Solid Door door panel polissoir | |
| CN113649736A (en) | Automatic rotating equipment suitable for welding different cylinder diameters and tracks of concrete mixer truck | |
| CN109822332B (en) | Full-automatic motorcycle and electric vehicle disc brake disc assembly machine | |
| CN111922231A (en) | Pipe bending device for air conditioner production | |
| CN216655929U (en) | Step section forming machine for golf club | |
| CN219216313U (en) | Slideway feeding automatic line | |
| CN214779300U (en) | Tray disassembling and stacking mechanism for tray taking through telescopic fork of fork plate | |
| CN219925330U (en) | High-precision conveying device for handlebar upright rods | |
| CN220578407U (en) | Glass processing loading platform | |
| CN218226418U (en) | Press mounting machine positioning device | |
| CN209969615U (en) | Drilling machine |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Dong Ruiping Inventor after: Tong Shengkun Inventor after: Zhu Wenjing Inventor after: Zhang Mengjun Inventor after: Wu Shaoying Inventor after: Li Xinbing Inventor after: Chen Xiaojiang Inventor after: Liu Fangbao Inventor before: Dong Ruiping Inventor before: Tong Shengkun Inventor before: Zhu Wenjing Inventor before: Zhang Mengjun Inventor before: Wu Shaoying Inventor before: Li Xinbing Inventor before: Chen Xiaojiang Inventor before: Liu Fang |
|
| CB03 | Change of inventor or designer information |