CN104596409B - The high indicator of a kind of mould - Google Patents
The high indicator of a kind of mould Download PDFInfo
- Publication number
- CN104596409B CN104596409B CN201510017481.1A CN201510017481A CN104596409B CN 104596409 B CN104596409 B CN 104596409B CN 201510017481 A CN201510017481 A CN 201510017481A CN 104596409 B CN104596409 B CN 104596409B
- Authority
- CN
- China
- Prior art keywords
- power transmission
- transmission shaft
- high indicator
- mould
- circuit board
- 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.)
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/406—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by monitoring or safety
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/45—Nc applications
- G05B2219/45137—Punch, stamp, also with use die, mould
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- Testing And Monitoring For Control Systems (AREA)
- Casings For Electric Apparatus (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
The present invention discloses the high indicator of a kind of mould, wherein, the high indicator of described mould comprises a circuit board, and magnetic position sensor is set on circuit board, the high indicator of described mould also comprises the permanent magnet corresponding to magnetic position sensor, and described permanent magnet is connected in power transmission shaft by gear structure. The present invention is by adopting gear structure prevent power transmission shaft axial float and radially wobble the impact on magnetic position sensor, and gap between permanent magnet and magnetic position sensor, thereby signal stabilization and security are improved, prevent from producing error signal by vibrations, its structural design is more ingenious, power transmission shaft is not directly just to sensor and the circuit board of this sensor is set, so punch the safety problem that causes damaging IC electric leakage when having avoided the excessive axial float of power transmission shaft and having radially wobbled in addition.
Description
Technical field
The present invention relates to machine control field, relate in particular to the high indicator of a kind of mould.
Background technology
At present, on forcing press, be all provided with the high indicator of mould, for showing height of packing compact. But the high indicator of existing mould, in the time of forcing press strenuous vibration, may there is axial float and radially wobble in power transmission shaft, and this causes jitter and misoperation, the safety problem that also likely causes IC to damage and leak electricity.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide the high indicator of a kind of mould, be intended to solve the high indicator of existing mould easily due to the axial float of power transmission shaft and radially wobble and cause jitter and uneasy congruent problem.
Technical scheme of the present invention is as follows:
The high indicator of a kind of mould, wherein, the high indicator of described mould comprises a circuit board, and magnetic position sensor is set on circuit board, and the high indicator of described mould also comprises the permanent magnet corresponding to magnetic position sensor, and described permanent magnet is connected in power transmission shaft by gear structure.
The high indicator of described mould, wherein, described gear structure comprises at least one driving gear and at least one driven gear, and described driving gear is sleeved on described power transmission shaft, described permanent magnet is arranged on driven gear central upper, and described driving gear engages with described driven gear.
The high indicator of described mould, wherein, described circuit board bottom is provided with a fixed mount, described driven gear center is provided with a fixed axis, described fixed axis is connected with described fixed mount, and described driven gear rotates around described fixed axis, described driving gear and power transmission shaft tight fit.
The high indicator of described mould, wherein, described circuit board is empty avoiding setting corresponding to the part of power transmission shaft.
The high indicator of described mould, wherein, described power transmission shaft is provided with at least one bearing in the part of housing.
The high indicator of described mould, wherein, described bearing is two, the gap between two bearings is filled by housing.
The high indicator of described mould, wherein, described magnetic position sensor is the non-contact type magnetic rotary encoder that can measure angle in 360 °.
The high indicator of described mould, wherein, the position oil sealing sealing that described power transmission shaft contacts with the housing outer rim of the high indicator of mould.
The high indicator of described mould, wherein, the high indicator opening part of described mould is provided with gripper shoe, in described gripper shoe, is provided with erection column, by described erection column, circuit board is locked in gripper shoe.
The high indicator of described mould, wherein, the material of described driven gear and fixed axis is non-magnet material.
Beneficial effect: the present invention is by adopting gear structure prevent power transmission shaft axial float and radially wobble the impact on magnetic position sensor, and gap between permanent magnet and magnetic position sensor, thereby signal stabilization and security are improved, prevent from producing error signal by vibrations, its structural design is more ingenious, power transmission shaft is not directly just to sensor and the circuit board of this sensor is set, so punch the safety problem that causes damaging IC electric leakage when having avoided the excessive axial float of power transmission shaft and having radially wobbled in addition.
Brief description of the drawings
Fig. 1 is the structural representation at the high indicator preferred embodiment of a kind of mould of the present invention the first visual angle.
Fig. 2 is the decomposition texture schematic diagram of the high indicator preferred embodiment of a kind of mould of the present invention.
Fig. 3 is another decomposition texture schematic diagram of the high indicator preferred embodiment of a kind of mould of the present invention power transmission shaft.
Fig. 4 is another visual angle decomposition texture schematic diagram of the high indicator preferred embodiment of a kind of mould of the present invention.
Fig. 5 is the enlarged diagram of the high indicator preferred embodiment of a kind of mould of the present invention clearance structure.
Detailed description of the invention
The invention provides the high indicator of a kind of mould, for making object of the present invention, technical scheme and effect clearer, clear and definite, below the present invention is described in more detail. Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
In conjunction with shown in Fig. 1 to Fig. 4, the high indicator preferred embodiment of mould of the present invention comprises a circuit board 4, magnetic position sensor 19 is set on circuit board 4, the high indicator of described mould also comprises the permanent magnet 14 corresponding to magnetic position sensor 19, described permanent magnet 14 is connected in power transmission shaft 9 by gear structure, described gear structure comprises at least one driving gear 12 and at least one driven gear 5, described driving gear 12 is sleeved on described power transmission shaft 9, described permanent magnet 14 is arranged on driven gear 5 central upper, and described driving gear 12 engages with described driven gear 5. Described magnetic potential sensor 19 can, perpendicular to permanent magnet 14, also can be parallel to permanent magnet 14.
The inventive point that the embodiment of the present invention is most crucial: the motion of transmitting power transmission shaft 9 by a gear structure, thereby avoided power transmission shaft 9 directly perpendicular to (or being parallel to) magnetic position sensor 19, so avoid power transmission shaft 9 axial floats and radially wobbled brought impact. In addition, adopt magnetic position sensor 19 to detect the angle of power transmission shaft 9, its detection is safer with respect to sensors such as traditional photoelectricity, stable, and the water of being fearless, oil, the pollution of dust.
The high indicator of mould of the present invention, its overall structure comprises: a housing 7, be provided with an opening in described housing 7 sides and for sealing the panel 1 of described opening, also be provided with a display screen 3 at opening part, gripper shoe 2 is set between panel 1 and opening, described display screen 3 embeds in described gripper shoe 2, described in described panel 1(, panel is glue film, use makes a check mark, its part corresponding to display screen 3 is transparence) be fixed on housing 7 by described gripper shoe 2, described gripper shoe 2 is fixed on housing 7 by screw 16. Described circuit board 4 circuits can connect a power supplier. Panel 1 forms an enclosure space with described housing 7, and circuit board 4, gripper shoe 2, display screen 3 and power supplier are arranged in described enclosure space. Power supplier is specifically as follows battery (as battery), is arranged with one outward battery shockproof cover is provided at described battery, and this battery is option certainly, also can external power supply.
Highlight the most crucial inventive point of the present invention below.
Described power transmission shaft 9 drives driving gear 12 to rotate, driving gear 12 engages with driven gear 5, the high display of mould can be arranged on the lifting slider on forcing press, its power transmission shaft 9 can be connected with the drive motors action axle of lifting slider, like this, the lifting action of lifting slider just passes to power transmission shaft 9 by drive motors, and power transmission shaft 9 drives driving gear 12 to rotate, driving gear 12 drives driven gear 5 to rotate, thereby has realized the transmitting and converting of slide block movement.
Permanent magnet 14 is established on driven gear 5 tops, described permanent magnet 14 is perpendicular to (or being parallel to) magnetic position sensor 19, and tool is at regular intervals, detects by magnetic position sensor 19 permanent magnet 14 rotating along with driven gear 5 and realize the detection to power transmission shaft 9 angles.
Specifically, be provided with a fixed mount 6 on described circuit board 4, this fixed mount 6 is for supporting driven gear 5. Be provided with a fixed axis at described driven gear 5 centers, described fixed axis is connected with described fixed mount 6, realizes like this radially fixing of driven gear 5, and driven gear 5 can be rotated around described fixed axis. Between described driven gear 5 and fixed axis, by screw 13 axial restraints, fixed axis is fixedly installed, and driven gear 5 can rotate around fixed axis. Upper end at fixed axis is provided with screw hole, makes screw 13 connect described fixed axis downwards by the top of driven gear 5.
The shape of described fixed mount 6 is similar to second font semi-surrounding shape structure, it is made up of orthogonal three limits, its insole binding is close to described circuit board 4, and fix by screw with it, middle limit is arranged near one side of driven gear 5 parallel with driven gear 5, top margin arranges near described driven gear 5 bottoms, and is connected with described driven gear 5 by fixed axis.
Can be fixing by screw 13 between described driving gear 12 and power transmission shaft 9, driving gear 12 is tight fits with power transmission shaft 9, be that driving gear 12 is to rotate along with the rotation of power transmission shaft 9, top at power transmission shaft is provided with screw hole, makes this screw connect described power transmission shaft 9 downwards by the top of driving gear 12.
Described circuit board 4 and power transmission shaft 9 empty avoiding settings, as shown in Figure 5, circuit board 4 is set to empty avoiding corresponding to the part of power transmission shaft 9, for example adopt the mode that shifts to install or on circuit board 4 corresponding to the part hollow out of power transmission shaft 9, the object so arranging is while preventing that power transmission shaft 9 from breaking down, breaks through the restriction of bearing and housing 7, while being flushed to housing 7 inside, damage circuit board 4, avoid the serious problems such as circuit board 4 short circuit electric leakages. Space when part in this housing 7 need reserve power transmission shaft 9 and is punched in housing 7 simultaneously, makes power transmission shaft 9 can not wash out circuit board and be arranged on the sensor on circuit board. Circuit board 4 can be locked in gripper shoe 2 by the screw 15 on erection column and circuit board in gripper shoe 2, to facilitate installation testing and assembling.
Be provided with at least one bearing 11 at described power transmission shaft 9 in the part of housing 7, preferably for interval arranges two. By the restriction of two bearings 11, power transmission shaft 9 radial displacements are limited, so avoided power transmission shaft 9 radially to rock. Further, the gap between two bearings 11 is filled by housing 7, on housing 7, forms the shape that is similar to a step, can further guarantee like this rotation that power transmission shaft 9 is more stable, avoids radial and axial play.
The IC chip of described magnetic position sensor 19 is preferably AS5000 series, and the present invention is AS5040 preferably. This magnetic position sensor 19 be for can measure the non-contact type magnetic rotary encoder of angle in 360 °, thus be applicable to severe working environment, and can tolerate a certain amount of permanent magnet position deviation and air gap change conditions. And within vertical interval between permanent magnet 14 and IC chip should be the scope of the magnetic field that can make IC chip surface in regulation, its vertical interval is preferably in 0.2mm ~ 6mm, 0.5mm ~ 1.8mm more preferably in the present invention. This permanent magnet 14 should be to be bipolar magnet. The built-in Hall element of described magnetic position sensor 19, its center around the chip of magnetic position sensor 19 distributes, and produces a voltage that characterizes IC chip surface magnetic field.
Power transmission shaft 9 extends the vertical trundle 10 of pegging graft in end outside housing 7. The position oil sealing 8 contacting with housing 7 outer rims at described power transmission shaft 9 seals, to play grease proofing effect, it can prevent the pollution from oil outer, water and dust, and power transmission shaft 9 needs to lubricate in transmission process simultaneously, and oil sealing 8 also can play the generation that prevents bearing oil leakage situation. Also can between display screen 3 and circuit board 4, fill shockproof insulating cement simultaneously and on circuit board 4, apply shockproof insulating cement and improve sealing effectiveness and shockproof effect.
Described power transmission shaft 9 is except arranging latch structure, as shown in Figure 3, also can be by power transmission shaft 17(power transmission shaft 9) part of extending outside housing 7 arranges a shockproof flexible axle 18, trundle 10 is set simultaneously, to improve shockproof effect. Described shockproof flexible axle 18 is flexible axle, and it can connect not at same axis with not in same direction or there is the diaxon of relative motion, with transferring rotational motion and moment of torsion.
The material of described driven gear 5 and fixed axis is non-magnet material, and for example copper, aluminium, plastic cement, pottery etc., to prevent that magnetic field is subject to magnetic interference.
In sum, the present invention is by adopting gear structure prevent power transmission shaft axial float and radially wobble the impact on magnetic position sensor, and gap between permanent magnet and magnetic position sensor, thereby signal stabilization and security are improved, prevent from producing error signal by vibrations, its structural design is more ingenious, and power transmission shaft is not directly just to sensor, so punch the safety problem that causes damaging IC electric leakage when having avoided the excessive axial float of power transmission shaft and having radially wobbled in addition.
Should be understood that, application of the present invention is not limited to above-mentioned giving an example, and for those of ordinary skills, can be improved according to the above description or convert, and all these improvement and conversion all should belong to the protection domain of claims of the present invention.
Claims (8)
1. the high indicator of mould, it is characterized in that, the high indicator of described mould comprises a circuit board, and magnetic position sensor is set on circuit board, the high indicator of described mould also comprises the permanent magnet corresponding to magnetic position sensor, and described permanent magnet is connected in power transmission shaft by gear structure;
Described gear structure comprises at least one driving gear and at least one driven gear, and described driving gear is sleeved on described power transmission shaft, and described permanent magnet is arranged on driven gear central upper, and described driving gear engages with described driven gear;
Described circuit board bottom is provided with a fixed mount, and described driven gear center is provided with a fixed axis, and described fixed axis is connected with described fixed mount, and described driven gear rotates around described fixed axis, described driving gear and power transmission shaft tight fit;
Described permanent magnet perpendicular to or be parallel to magnetic position sensor, the vertical interval between the IC chip of described permanent magnet and described magnetic position sensor is 0.2mm ~ 6mm.
2. the high indicator of mould according to claim 1, is characterized in that, described circuit board is empty avoiding setting corresponding to the part of power transmission shaft.
3. the high indicator of mould according to claim 1, is characterized in that, described power transmission shaft is provided with at least one bearing in the part of housing.
4. the high indicator of mould according to claim 3, is characterized in that, described bearing is two, and the gap between two bearings is filled by housing.
5. the high indicator of mould according to claim 1, is characterized in that, described magnetic position sensor is the non-contact type magnetic rotary encoder that can measure angle in 360 °.
6. the high indicator of mould according to claim 1, is characterized in that, the position oil sealing sealing that described power transmission shaft contacts with the housing outer rim of the high indicator of mould.
7. the high indicator of mould according to claim 1, is characterized in that, the high indicator opening part of described mould is provided with gripper shoe, in described gripper shoe, is provided with erection column, by described erection column, circuit board is locked in gripper shoe.
8. the high indicator of mould according to claim 1, is characterized in that, the material of described driven gear and fixed axis is non-magnet material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510017481.1A CN104596409B (en) | 2014-05-23 | 2015-01-13 | The high indicator of a kind of mould |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410223578 | 2014-05-23 | ||
| CN2014102235783 | 2014-05-23 | ||
| CN201510017481.1A CN104596409B (en) | 2014-05-23 | 2015-01-13 | The high indicator of a kind of mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104596409A CN104596409A (en) | 2015-05-06 |
| CN104596409B true CN104596409B (en) | 2016-05-25 |
Family
ID=53070589
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510017481.1A Active CN104596409B (en) | 2014-05-23 | 2015-01-13 | The high indicator of a kind of mould |
| CN201510016115.4A Active CN104553042B (en) | 2014-05-23 | 2015-01-13 | A kind of shockproof structure of mould height indicator |
| CN201510015764.2A Active CN104570945B (en) | 2014-05-23 | 2015-01-13 | A kind of nothing arranges the mould height indicator of device and display packing and externally arranges device |
| CN201520021244.8U Expired - Fee Related CN204374725U (en) | 2014-05-23 | 2015-01-13 | A kind of nothing arranges the mould height indicator of device and externally arranges device |
Family Applications After (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510016115.4A Active CN104553042B (en) | 2014-05-23 | 2015-01-13 | A kind of shockproof structure of mould height indicator |
| CN201510015764.2A Active CN104570945B (en) | 2014-05-23 | 2015-01-13 | A kind of nothing arranges the mould height indicator of device and display packing and externally arranges device |
| CN201520021244.8U Expired - Fee Related CN204374725U (en) | 2014-05-23 | 2015-01-13 | A kind of nothing arranges the mould height indicator of device and externally arranges device |
Country Status (1)
| Country | Link |
|---|---|
| CN (4) | CN104596409B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596409B (en) * | 2014-05-23 | 2016-05-25 | 凯达威尔创新科技（深圳）有限公司 | The high indicator of a kind of mould |
| CN106160353A (en) * | 2016-07-28 | 2016-11-23 | 芜湖莫森泰克汽车科技股份有限公司 | Detachable electric slide drive mechanism motor hall signal structure |
| CN108168419A (en) * | 2017-12-18 | 2018-06-15 | 凯达威尔创新科技（深圳）有限公司 | A kind of high indicator of split type mould |
| CN109622773B (en) * | 2018-12-25 | 2021-01-08 | 凯达威尔创新科技（深圳）有限公司 | Die height indicator, die height adjusting system and method of stamping machine tool |
| CN110587322A (en) * | 2019-09-25 | 2019-12-20 | 长春荣德光学有限公司 | Linear guide rail with coding function |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2591595Y (en) * | 2002-12-17 | 2003-12-10 | 立野实业股份有限公司 | Electronic thermometer |
| CN2608963Y (en) * | 2003-04-28 | 2004-03-31 | 上海思锐电子仪器有限公司 | LCD electronic thermometer |
| US7230419B2 (en) * | 2005-06-03 | 2007-06-12 | Delphi Technologies, Inc. | Rotary position sensor |
| EP2029973A1 (en) * | 2006-05-31 | 2009-03-04 | L'Air Liquide Société Anonyme pour l'Etude et l'Exploitation des Procédés Georges Claude | Device for indicating a physical quantity |
| JP4365426B2 (en) * | 2007-04-13 | 2009-11-18 | カルソニックカンセイ株式会社 | Meter device |
| CN101658697B (en) * | 2008-08-26 | 2013-02-20 | 北京谊安医疗系统股份有限公司 | Identification mechanism for injector of injection pump |
| CN201389589Y (en) * | 2009-01-21 | 2010-01-27 | 赵明贤 | Die height indicator |
| CN101852820B (en) * | 2010-05-19 | 2011-12-07 | 江阴钟舟电气有限公司 | Digital installation meter |
| CN202427844U (en) * | 2012-02-06 | 2012-09-12 | 宁波澳玛特高精冲压机床股份有限公司 | Lower die holder of punch |
| CN203191148U (en) * | 2013-02-03 | 2013-09-11 | 无锡市广顺石化仪表厂 | Shock-proof pressure gauge |
| CN103837114A (en) * | 2013-12-31 | 2014-06-04 | 扬州大祺自动化技术有限公司 | Press machine die height indicator |
| CN104596409B (en) * | 2014-05-23 | 2016-05-25 | 凯达威尔创新科技（深圳）有限公司 | The high indicator of a kind of mould |
| CN104215167A (en) * | 2014-09-23 | 2014-12-17 | 扬州大祺自动化技术有限公司 | Electronic number displayer |
| CN204373591U (en) * | 2015-01-13 | 2015-06-03 | 深圳市恒德创新科技有限公司 | A kind of mould height indicator |
-
2015
- 2015-01-13 CN CN201510017481.1A patent/CN104596409B/en active Active
- 2015-01-13 CN CN201510016115.4A patent/CN104553042B/en active Active
- 2015-01-13 CN CN201510015764.2A patent/CN104570945B/en active Active
- 2015-01-13 CN CN201520021244.8U patent/CN204374725U/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104570945B (en) | 2016-04-27 |
| CN204374725U (en) | 2015-06-03 |
| CN104570945A (en) | 2015-04-29 |
| CN104553042B (en) | 2016-04-27 |
| CN104596409A (en) | 2015-05-06 |
| CN104553042A (en) | 2015-04-29 |
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Effective date of registration: 20151009 Address after: 518000 Guangdong city of Shenzhen province Baoan District manhole Street enterprises Road No. 12-15 Applicant after: SHENZHEN JIANDE PRECISION MACHINERY CO., LTD. Address before: 518126 Guangdong city of Shenzhen province Baoan District city streets Xixiang Airlines Shu Dong E Industrial Zone on the west side of building 3 Applicant before: SHENZHEN HENGDE INNOVATION SCIENCE & TECHNOLOGY CO., LTD. |
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Effective date of registration: 20160325 Address after: Baoan District Fuyong street Shenzhen city Guangdong province 518000 COFCO (Fu'an) robot manufacturing Industrial Park 16 Building 2 floor Applicant after: Keita Will innovation technology (Shenzhen) Co., Ltd. Address before: 518000 Guangdong city of Shenzhen province Baoan District manhole Street enterprises Road No. 12-15 Applicant before: SHENZHEN JIANDE PRECISION MACHINERY CO., LTD. |
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