CN104259312B - A kind of automatic displacement riveting molding blanking die of motor rotor iron core - Google Patents
A kind of automatic displacement riveting molding blanking die of motor rotor iron core Download PDFInfo
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- CN104259312B CN104259312B CN201410462896.5A CN201410462896A CN104259312B CN 104259312 B CN104259312 B CN 104259312B CN 201410462896 A CN201410462896 A CN 201410462896A CN 104259312 B CN104259312 B CN 104259312B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/10—Die sets; Pillar guides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
- B21D35/002—Processes combined with methods covered by groups B21D1/00 - B21D31/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D39/00—Application of procedures in order to connect objects or parts, e.g. coating with sheet metal otherwise than by plating; Tube expanders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Motors, Generators (AREA)
Abstract
The invention discloses a kind of automatic displacement riveting molding blanking die of motor rotor iron core, belong to rotor core manufacturing technology field.Mould of the present invention includes upper mould and corresponding lower mould two parts, described upper die and lower die are separately mounted on punch press, described upper mould can be moved up and down by punch press carries out clutch with lower mould, upper mould is provided with some cylinders and some punch-pin, and the relevant position of lower mould is sequentially provided with the cavity plate and 120 mechanical indexing mechanisms corresponding with some punch-pin.The mould process of the present invention can realize regular clearance blanking, positive and negative punching, rush the punching process such as big aperture, centre bore finishing, every automatic corner degree riveting molding；The present invention mould be used for production line motor assemble, each operation fraction defective be decreased obviously and optimize technique with save process.Production efficiency is obviously improved, stay in grade.
Description
Technical field
The invention belongs to rotor core manufacturing technology field, the automatic displacement of more particularly to a kind of motor rotor iron core is riveted
Blanking die is molded, central hole size is solved and is difficult to control, is punched section and has sharp burr, concentricity and material stock thickness not
The difference such as uniform causes the problems such as dynamic balancing is poor, unstable and motor the manufacturing cost of quality is high.
Background technology
With the fast development of die industry, precision of stamping parts is also constantly lifted, and traditional moulds still can not meet motor
The technical requirements of manufacture, limit the development of whole industry.The deficiency that traditional moulds are still present includes：1）Monolithic punching process：
Wrong piece, which is manually rotated freely, through air-blowing frock to correct dynamic balancing, then riveting is folded by frock last item constitutes rotor, the external diameter of rotor, row
The irregular deviation of wire casing is big and the uneven rear process for directly affecting motor of the wrong piece piece number of rotor is assembled and quality stability is poor, and
The many efficiency of process are low；2）Automatic riveting punching process：The vertical rotor of group fails to realize that every staggeredly rotary shifted and punching itself is deposited
Form and position tolerance (concentricity), the material factor such as thickness ununiformity is even, cause the whole dynamic balance of rotor poor；3）Automatic displacement is riveted
It is molded punching process：Indexing mechanism be additional equipment drives be installation site to quadrature increase add angle rotate small-sized punching
Mold design and manufacture difficulty, equipment requirement height are that mould and equipment investment cost are very big.Other traditional moulds manufacture is obtained
Rotor core there is following defect：The problems such as because of the above, fraction defective is high during assembling motor；And there is punching the upper surface of rotor
Cut-out burr, easily scrape disconnected during coiling and scratch line bag.
A kind of shortcoming existed for existing technology, it would be highly desirable to blanking die of automatic displacement riveting molding.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of riveting of the automatic displacement of motor rotor iron core
Blanking die is molded, mould of the invention, which has, can realize regular clearance blanking, positive and negative punching, rush big aperture, center
The blanking die structure of hole finishing, every automatic corner degree riveting molding etc..
The purpose of the present invention is achieved through the following technical solutions：A kind of automatic displacement riveting molding punching of motor rotor iron core
Mould, including upper mould and corresponding lower mould two parts are cut out, described upper die and lower die are separately mounted on punch press, described upper mould
It can be moved up and down by punch press and carry out clutch with lower mould, described upper mould is that the is disposed with tabular, described upper mould
One guide pin hole punch-pin, fan-shaped punch I, fan-shaped die, chamfering die, the second guide pin hole punch-pin, Large central aperture punch-pin, small centre bore
Punch-pin, finishing centre hole punch-pin, sleeving and riveting point punch-pin, press a punch-pin, precut punch, blanking punch, and described lower mould is tabular,
Described lower mould is provided with cavity plate corresponding with each punch-pin in upper mould and provided with punch-pin corresponding with upper mould each cavity plate；
The blanking punch of the upper mould at the blanking die of lower mould with being provided with 120 degree of mechanical indexing mechanisms；
Cylinder is connected on fan-shaped punch I, Large central aperture punch-pin, sleeving and riveting point punch-pin on described upper mould, it is described
Lower mould on fan-shaped punch II be connected with cylinder.
Described fan-shaped punch I, fan-shaped die, chamfering die, Large central aperture punch-pin, small centre bore punch-pin, finishing center
Hole punch-pin, sleeving and riveting point punch-pin, press a punch-pin, precut punch, blanking punch are 3, and the first guide pin hole punch-pin and second are led
Nail punch-pin is 2；
Described cylinder is connected with magnetic valve, and the punch-pin that cylinder is connected by solenoid valve control realizes punching press.
120 degree of described mechanical indexing mechanisms, including positioning guide pin, ceramic cavity plate, die socket, first gear and rotation
Mechanism；Described positioning guide pin is arranged at the outside of blanking punch, with the die socket on lower mould in punching press it is corresponding；Described
Ceramic cavity plate is arranged on the inside of die socket, and first gear is provided with the outside of described die socket, and first gear can be in connected rotation
120 degree of indexings are carried out under the drive of rotation mechanism.
Described rotating mechanism includes rotary tapered wedge, guide sleeve, live spindle and second gear, and described guide sleeve is set
In lower mould, segmentation angle and positioning are realized；Described rotary tapered wedge, live spindle and spring is arranged at guide sleeve from top to bottom,
And rotary tapered wedge stretches out the plate face of lower mould, it is easy to upper mould to move downward realization in undershoot and starts rotation；The second described tooth
Wheel is located on the outside of live spindle, and described live spindle can drive second gear to rotate；Described second gear and the
One gear carries out gear connection.
The mould process of the present invention can realize regular clearance blanking, positive and negative punching, rush big aperture, centre bore essence
The punching process such as whole, every automatic corner degree riveting molding；Control positive and negative, big aperture, riveting are completed by magnetic valve and cylinder
The clearance blanking of point, the burr face increase chamfering process of punching, finishing is increased with the special-shaped centre bore that axle coordinates（Ensure aperture chi
Very little, morpheme size precision and finish）, more importantly descend 120 degree on the ceramic cavity plate of mould equipped with linear motion Purely mechanical to turn
Position mechanism completes every staggeredly indexable 120 degree of riveting moldings；Product is that one group of specified piece number, upper and lower surface are after being released through mould
Arc profile, specified big aperture position, 0.003mm precision centre bore, 120 degree of regular global facilities of every indexing are to complete
Qualified rotor core.
The present invention has the following advantages and effect relative to prior art：
Constituted into 1. mould of the present invention can complete punching, the wrong piece of automatic rotation and automatic single positioning riveting
Product rotor, overcomes the assembling exception and quality stability difference and process for needing the wrong piece of artificial rotation to bring in traditional moulds technique
The low defect of many efficiency.
2. adding mechanical indexing mechanism on mould in the present invention, realize punching and complete to rotate riveting in mould
Connect, the small punching for overcoming traditional moulds structure is unable to the wrong piece of Rotating with Uniform, and Concentricity tolerance, the material thickness ununiformity for being punched itself are even
Cause the defects such as dynamic balancing difference.
3. it is present in lower mould in 120 degree of mechanical indexing mechanisms in the mould of the present invention, and this indexing is not required to separately
Outer power is provided, and positioning guide pin and die socket are accurately positioned to be provided after indexing, overcome the wide-angle of traditional moulds structure
The design of small-sized Lamination mould and manufacture difficulty and equipment requirement height of rotation are very big etc. defect of mould and equipment investment cost.
4. gouged spews face direction is provided with fan-shaped punch and chamfering punch-pin in the mould of the present invention, for reversely rushing
Cut out and ensure that rotor upper and lower end face is the burr face on arc surface and amendment punching, it is to avoid the gouged spews face of finished product rotor core
Scraped in coiling and break or scratch the defects such as line bag.
Brief description of the drawings
Further detailed description is done to patent of the present invention with reference to Figure of description, wherein：
Fig. 1 is the structural representation of the mould of the present invention；
Fig. 2 is 120 degree of mechanical indexing mechanism structural representations of the invention；
Fig. 3 is workflow schematic diagram of the invention；
Fig. 4 is the structural representation of the product of punching of the present invention；
Fig. 5 is the product side structure schematic diagram of punching of the present invention；
Wherein, mould on 1,2 times moulds, 3 first guide pin hole punch-pin, 4 fan-shaped punch I, 5 fan-shaped dies, 6 cylinders, 7 fans
Shape punch-pin II, 8 chamfering dies, 9 second guide pin hole punch-pin, 10 Large central aperture punch-pin, 11 small centre bore punch-pin, 12 finishing
Centre bore punch-pin, 13 sleeving and riveting point punch-pin, 14 press a punch-pin, 15 precut punch, 16 blanking punches, 17 indexing mechanisms, 18
Guide pin hole I is rushed, 19 square impacts are fan-shaped, 20 recoils are fan-shaped, 21 burr surface chamfers, and 22 rush guide pin hole II, and 23 rush Large central aperture, and 24 rush small
Centre bore, 25 finishing centre holes, 26 sleeving and riveting spot hole, 27 belling riveting points, 28 pre-cut profiles, 29 positioning blanking riveting moldings, 30 determine
Position guide pin, 31 ceramic cavity plates, 32 die sockets, 33 first gears, 34 rotary tapered wedges, 35 guide sleeves, 36 second gears, 37
Live spindle, 38 springs, 39 punchings.
Embodiment
With reference to embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited
In this.
Embodiment
As shown in figure 1, the invention provides a kind of automatic displacement riveting molding blanking die of motor rotor iron core, including
Upper mould 1 and corresponding two parts of lower mould 2, described upper mould 1 and lower mould 2 are separately mounted on punch press, and described upper mould 1 can lead to
Cross punch press and move up and down and carry out clutch with lower mould 2, described upper mould 1 is to be disposed with first on tabular, described upper mould 1 to lead
Nail punch-pin 3, fan-shaped punch I 4, fan-shaped die 5, chamfering die 8, the second guide pin hole punch-pin 9, Large central aperture punch-pin 10, it is small in
Heart hole punch-pin 11, finishing centre hole punch-pin 12, sleeving and riveting point punch-pin 13, the punch-pin 14 that presses, precut punch 15, blanking punch 16,
Described lower mould 2 is provided with cavity plate corresponding with each punch-pin in upper mould 1 and provided with punch-pin corresponding with upper each cavity plate of mould 1；
The blanking punch 16 of the upper mould 1 at the blanking die of lower mould with being provided with 120 degree of mechanical indexing mechanisms 17；
Described fan-shaped punch I 4, fan-shaped die 5, chamfering die 8, Large central aperture punch-pin 10, small centre bore punch-pin 11,
Finishing centre hole punch-pin 12, sleeving and riveting point punch-pin 13, the punch-pin 14 that presses, precut punch 15, blanking punch 16 are 3, first
Guide pin hole punch-pin 3 and the second guide pin hole punch-pin 9 are 2；
Cylinder is connected on fan-shaped punch I 4, Large central aperture punch-pin 10, sleeving and riveting point punch-pin 13 on described upper mould
6（Totally 3）, the fan-shaped punch II 7 on described lower mould is connected with cylinder.
Described cylinder 6 is connected with magnetic valve, and the punch-pin that cylinder 6 is connected by solenoid valve control realizes punching press.
As shown in figure 3, every group of motor rotor core stamping punching process composition process is：Rush small guide pin hole 18, square impact fan
Shape 19, recoil sector 20, burr surface chamfer 21, big guide pin hole 22 is rushed, Large central aperture 23 is rushed, rushes small centre bore 24, finishing center
Hole 25, sleeving and riveting spot hole 26, belling riveting point 27, pre-cut profile 28, positioning blanking riveting molding 29, wherein, rush guide pin hole 18 and 22
Process respectively containing two groups of punch and matrixes, remaining process is respectively containing three groups of punch and matrixes.
The operation principle of the mould of the present invention：As shown in Figures 1 to 3, the guide pin hole punch-pin 3 of mould 1 completes to rush small on described
Guide pin hole process 18, the first cylinder control fan-shaped punch I 4 complete the fan-shaped process 19 of square impact（Rush 33 1, skies）, the second cylinder
The lower mould fan-shaped punch II 7 of control coordinates fan-shaped die 5 to complete the fan-shaped process 20 of recoil（Empty 33 are rushed 1）, chamfering punch-pin 8 it is complete
It is convex that big guide pin hole process 22, the 3rd cylinder control Large central aperture are rushed into burr surface chamfer reparing process 21, the completion of guide pin hole punch-pin 9
Mould 10 completes to rush Large central aperture process 23（Rush 20 14, skies）, small centre bore punch-pin 11 completes to rush small centre bore process 24, essence
Whole centre bore punch-pin 12 completes the finishing process 25 of finishing centre hole, the 4th cylinder control sleeving and riveting point punch-pin 13 and completes punch rivet holes
Process 26（Rush 1 33, sky）, the riveted holes of process punching（Through hole）For the isolation between rotor core unit, press a little
Punch-pin 14 completes the hole process 27 that is riveted（Press 33 1, skies）, the riveting position of process formation convex-concave, precut punch 15
Pre-cut profile blank operation 28 is completed, the process realizes that punching pre-cut, blanking punch 16 complete positioning blanking riveting molding process
29, punch-pin of the lower relevant position of mould 2 provided with the upper mould 1, the same amount of cavity plate of cavity plate correspondence and punch-pin complete punching process
Work flow, is realized through blanking punch positioning and 120 degree of mechanical indexing mechanisms 17（As shown in Figure 2）Rivet and ejection die is
Complete the qualified rotor core that 34 layers of punching 39 are constituted（As shown in Figure 4 and Figure 5）.
As shown in Fig. 2 120 degree of mechanical indexing mechanisms 17 of the present invention, including positioning guide pin 30, ceramic cavity plate 31,
Die socket 32, first gear 33 and rotating mechanism；Described positioning guide pin 30 is arranged at the outside of blanking punch 16, and on lower mould
Die socket 32 it is corresponding in punching press；Described ceramic cavity plate 31 is arranged at outside the inner side of die socket 32, described die socket 32
Side is provided with first gear 33, and first gear 33 can carry out 120 degree of rotations in the case where the second gear of connected rotating mechanism drives.
Described rotating mechanism includes rotary tapered wedge 34, guide sleeve 35, live spindle 37 and second gear 36, and described leads
Lower mould is arranged to set 35, segmentation angle and positioning is realized；Described rotary tapered wedge 34, live spindle 37 and spring 38 from upper and
Under be arranged at guide sleeve 35, and rotary tapered wedge 34 stretches out the plate face with lower mould 2, is easy to upper mould to move downward realization in undershoot
Start rotation；Described second gear 36 is located at the outside of live spindle 37, and described live spindle 37 can drive second gear 36
Rotate；Described second gear 36 carries out gear with first gear 33 and is connected.
The operation principle of above-mentioned 120 degree mechanical indexing mechanisms 17 is：Upper mould 1 moves downward promotion rotary tapered wedge 34, rotation
Turn wedge 34 promotes live spindle 37 to move downward again, in rotary tapered wedge 34 and spring 38 during the disengaging guide sleeve 35 of live spindle 37
（Compression）In the presence of live spindle 37 and second gear 36 make 60 degree of rotation, drive the first tooth in the case where second gear 36 is rotated
Wheel 33 and die socket 32, ceramic cavity plate 31 make 120 degree of rotation, and upper mould 1 continues to move downward all rotating part rotary motions
Complete only to make linear motion downwards, positioning guide pin 30 makees the position of the ceramic cavity plate 31 of fine positioning into die socket 32, and upper mould 1 continues
Downward stripper pushes down material strip（Shown in Fig. 3）, the upper first positioning center hole of the stretching of mould spring-compressed blanking punch 16 stripper（Through pre-
Cut punch-pin 15 and complete blank operation 28）, the ceramic progress of cavity plate 31 riveting molding is entered in the release punching from material strip to blanking punch 16 again,
Upper mould 1 moves downward completion（The bottom dead centre of mould and punch press）.Mould 1 starts upward motion, spring 38 under punch press effect（It is multiple
Position）Live spindle 37 and rotary tapered wedge 34 is promoted to move upwards, live spindle 37 enters guide sleeve 35, blanking punch 16 departs from pottery
Porcelain cavity plate 31, upper mould 1 continues up positioning guide pin 30 and departs from die socket 32, and it is convex that upper mould spring reset stripper is higher by blanking
Peak is moved on mould 16 and positioning guide pin 30, punch press（Punch press and mould top dead-centre）Live spindle 37 and rotary tapered wedge 34 to
On move to peak and rotary tapered wedge 34 and depart from upper mould and have a certain distance, start to start next task（Repeat upper one
Task principle）, rotor for motor iron core is obtained after 34 layers of riveting manufacture of punching 39 are completed（As shown in Figure 4 and Figure 5）.
The mould process of the present invention can realize regular clearance blanking, positive and negative punching, rush big aperture, centre bore essence
The punching process such as whole, every automatic corner degree riveting molding；Control positive and negative, big aperture, riveting are completed by magnetic valve and cylinder
The clearance blanking of point, the burr face increase chamfering process of punching, finishing is increased with the special-shaped centre bore that axle coordinates（Ensure aperture chi
Very little, morpheme size precision and finish）, more importantly descend 120 degree on the ceramic cavity plate of mould equipped with linear motion Purely mechanical to turn
Position mechanism completes every staggeredly indexable 120 degree of riveting moldings；Product is that one group of specified piece number, upper and lower surface are after being released through mould
Arc profile, specified big aperture position, 0.003mm precision centre bore, 120 degree of regular global facilities of every indexing are to complete
Qualified rotor core.
It must be noted that above-described embodiment is some non-restrictives explanation made to patent of the present invention, but ability
The technical staff in domain repaiies it will be appreciated that can be made under the objective and scope without departing from patent of the present invention to patent of the present invention
Change, replace and change, these modifications, replacement and change still fall within the protection domain of patent of the present invention.
Claims (5)
1. a kind of automatic displacement riveting molding blanking die of motor rotor iron core, including upper mould and corresponding lower mould two parts,
Described upper die and lower die are separately mounted on punch press, described upper mould can be moved up and down by punch press with lower mould carry out from
Close, it is characterised in that：
Described upper mould is to be disposed with the first guide pin hole punch-pin, fan-shaped punch from feedstock direction on tabular, described upper mould
I, fan-shaped die, chamfering die, the second guide pin hole punch-pin, Large central aperture punch-pin, small centre bore punch-pin, finishing centre hole punch-pin,
Sleeving and riveting point punch-pin, pressed a punch-pin, precut punch, blanking punch, and described lower mould is tabular, and described lower mould is provided with and upper mould
In the corresponding cavity plate of each punch-pin and provided with punch-pin corresponding with upper mould each cavity plate；
The blanking punch of the upper mould at the blanking die of lower mould with being provided with 120 degree of mechanical indexing mechanisms；
Be connected to cylinder on fan-shaped punch I, Large central aperture punch-pin, sleeving and riveting point punch-pin on described upper mould, it is described under
Fan-shaped punch II on mould is connected with cylinder.
2. the automatic displacement riveting molding blanking die of motor rotor iron core according to claim 1, it is characterised in that：Institute
The fan-shaped punch I that states, fan-shaped die, chamfering die, Large central aperture punch-pin, small centre bore punch-pin, finishing centre hole punch-pin, sleeving and riveting
Point punch-pin, press a punch-pin, precut punch, blanking punch are 3, and the first guide pin hole punch-pin and the second guide pin hole punch-pin are
2.
3. the automatic displacement riveting molding blanking die of motor rotor iron core according to claim 1, it is characterised in that：Institute
The cylinder stated is connected with magnetic valve.
4. the automatic displacement riveting molding blanking die of motor rotor iron core according to claim 1, it is characterised in that：Institute
The 120 degree of mechanical indexing mechanisms stated include positioning guide pin, ceramic cavity plate, die socket, first gear and rotating mechanism；Described
Positioning guide pin is arranged at the outside of blanking punch, with the die socket on lower mould in punching press it is corresponding；Described ceramic cavity plate is set
Be placed on the inside of die socket, be provided with first gear on the outside of described die socket, first gear can connected rotating mechanism band
Dynamic 120 degree of indexings of lower progress.
5. the automatic displacement riveting molding blanking die of motor rotor iron core according to claim 4, it is characterised in that：Institute
The rotating mechanism stated includes rotary tapered wedge, guide sleeve, live spindle and second gear, and described guide sleeve is arranged at lower mould；Institute
Rotary tapered wedge, live spindle and the spring stated are arranged at guide sleeve from top to bottom, and rotary tapered wedge stretches out in the plate face of lower mould；
Described second gear is located on the outside of live spindle, and described live spindle can drive second gear to rotate；Described
Second gear carries out gear with first gear and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410462896.5A CN104259312B (en) | 2014-09-12 | 2014-09-12 | A kind of automatic displacement riveting molding blanking die of motor rotor iron core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410462896.5A CN104259312B (en) | 2014-09-12 | 2014-09-12 | A kind of automatic displacement riveting molding blanking die of motor rotor iron core |
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| Publication Number | Publication Date |
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| CN104259312A CN104259312A (en) | 2015-01-07 |
| CN104259312B true CN104259312B (en) | 2017-09-15 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105195613B (en) * | 2015-09-30 | 2017-08-25 | 四川腾邦科技有限公司 | Incremental pressing die for processing eight grades of stator cores and small skeleton iron core |
| CN105855402B (en) * | 2016-06-16 | 2017-11-24 | 东莞市建嘉实业有限公司 | A kind of production mechanism of ten teeth riveting iron core |
| CN106077290B (en) * | 2016-06-27 | 2017-11-24 | 上海电气集团上海电机厂有限公司 | A kind of streamline intelligence transposition punch die |
| NL1043083B1 (en) * | 2018-11-20 | 2020-06-03 | Bosch Gmbh Robert | Multi-layer blanking process and device for the manufacture of metal parts such as rotor and stator lamination sheets for an electric motor |
| CN111001705A (en) * | 2019-11-29 | 2020-04-14 | 江阴华新电器科技股份有限公司 | Stamping progressive die for three-piece combined jacking of motor stator and rotor iron cores |
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|---|---|
| CN104259312A (en) | 2015-01-07 |
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Inventor after: Dan Yutong Inventor after: Wu Gang Inventor after: Zhang Haishen Inventor after: Wen Zhibo Inventor after: Tai Xiaoqian Inventor before: Yi Qin Inventor before: Wu Gang Inventor before: Zhang Haishen Inventor before: Tai Xiaoqian |
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Effective date of registration: 20170915 Address after: 518129, Guangdong City, Longgang province Shenzhen District Bantian Street snow like Village Ho Industrial City, the only Industrial Park Patentee after: Shenzhen true motor development Co., Ltd. Address before: 518000, Guangdong, Shenzhen City, Longgang province Buji snow like industrial city, Ho Industrial Park Patentee before: Shenzhen Weizhen Motor Co., Ltd. |