CN107042621A - A kind of simple reliable Water asissted Injection technique aqueous vapor note row's control valve - Google Patents

A kind of simple reliable Water asissted Injection technique aqueous vapor note row's control valve Download PDF

Info

Publication number
CN107042621A
CN107042621A CN201710222056.5A CN201710222056A CN107042621A CN 107042621 A CN107042621 A CN 107042621A CN 201710222056 A CN201710222056 A CN 201710222056A CN 107042621 A CN107042621 A CN 107042621A
Authority
CN
China
Prior art keywords
water
ball
valve
valve ball
injection
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.)
Granted
Application number
CN201710222056.5A
Other languages
Chinese (zh)
Other versions
CN107042621B (en
Inventor
匡唐清
潘俊宇
赖德炜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
East China Jiaotong University
Original Assignee
East China Jiaotong University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by East China Jiaotong University filed Critical East China Jiaotong University
Priority to CN201710222056.5A priority Critical patent/CN107042621B/en
Publication of CN107042621A publication Critical patent/CN107042621A/en
Application granted granted Critical
Publication of CN107042621B publication Critical patent/CN107042621B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/1703Introducing an auxiliary fluid into the mould
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/46Means for plasticising or homogenising the moulding material or forcing it into the mould
    • B29C45/57Exerting after-pressure on the moulding material
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/10Internal combustion engine [ICE] based vehicles
    • Y02T10/30Use of alternative fuels, e.g. biofuels

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Taps Or Cocks (AREA)

Abstract

The invention discloses a kind of Water asissted Injection technique aqueous vapor note row's control valve simple to operate, reliable operation, it is mainly used in water filling and the switching control of gas injection drainage technology process in the auxiliary injection moulding process of water.The present apparatus mainly includes handle 14, rotating bar 1, through hole screw 2, protecgulum 3, water valve ball 4, sealing ring 12, connecting rod 5, filler 6, air valve ball 7, adjusting pad 8, bonnet 9, limit plunger 15, limit spring 16, spacing ball 17 etc..The present apparatus is innovative to be integrated together water valve and air valve and synchronization action, and water filling and the control of gas injection drainage procedure are realized by being switched on or switched off different water, gas circuit and the mutual cooperation of mould water injection device.This covering device employs a variety of sealing means such as packing seal and sealing ring sealing, it is ensured that will not leak and gas leakage in the course of work.It is adapted to the auxiliary injection of all kinds of water and the water injection of similar technique control.

Description

A kind of simple reliable Water asissted Injection technique aqueous vapor note row's control valve
Technical field
The present invention relates to a kind of simple reliable Water asissted Injection technique aqueous vapor note row's control valve, available for Water asissted Injection Technique and similar technique water filling and the switching control of gas injection drainage technology process.
Background technology
Water asissted Injection be it is a kind of filled up during traditional injection moulding toward injection water under high pressure promotion melt in plastic melt it is whole The Shooting Technique of individual die cavity and the blow moulded part required for being formed.Compared to traditional injection moulding technique, Water asissted Injection can be realized more For the production of complicated hollow product, material is more saved.Simultaneously for the gas aided injection mould that scale is applied, water is auxiliary Product product inner surface is smooth, and the high specific heat capacity of water substantially reduces plastic cool time, and then shortens molding cycle.Cause And Water asissted Injection process economy is very high, there is boundless application prospect.Aqueous vapor note row's control valve is used as Water asissted Injection Water filling and the switching of gas injection drainage technology process during indispensable important component major control water is auxiliary, to the auxiliary product matter of water Amount has a major impact.Traditional waterflood device mostly without single water injection switching control, but by control water pump and The startup of air pump and close down to realize the control and switching of water filling and drainage procedure, complex operation, efficiency is low, and control accuracy It is not high with reliability.Some auxiliary water injection devices of water have the control function of fractional water flooding and gas injection drainage technology process, but Rest essentially within the foundation phase of passage switching, in addition it is also necessary to which external auxiliary valving, which coordinates, could complete water filling and drainage procedure Control and switching.Simultaneously water injection apparatus structure complexity, reliability are added after thin consolidation water injection control function , there is the risk of leak gas leakage in reduction.
The content of the invention
In order to solve foregoing problems, Water asissted Injection technique actual demand is met, the invention provides one kind is simple and reliable Aqueous vapor note row's control valve, for Water asissted Injection technique and similar technique water filling and the switching and control of gas injection drainage technology process System.As shown in Figure 1, the present apparatus can be divided into the gentle valve portion in water valve part by function, and they are realized by connecting rod and are synchronized with the movement. Its structure mainly includes:Handle 14, rotating bar 1, through hole screw 2, protecgulum 3, water valve ball 4, sealing ring 12, connecting rod 5, filler 6, gas Valve ball 7, adjusting pad 8, bonnet 9, limit plunger 15, limit spring 16, spacing ball 17 etc..Wherein about 5 two for rotating bar 1 and connecting rod Section is that regular hexagon is easy to reliable delivery moment of torsion, while there is filler between bar and front and rear covers, seals, prevents water And gas leakage.As shown in Fig. 2 section A-As, there is an aperture on through hole screw 2, the inside is equipped with limit plunger 15, limit spring 16 and limit Position ball 17;There are two spherical grooves in the correspondence position of rotating bar 1 simultaneously, the angle of they and circle center line connecting is 60 °.Work as rotation When bar 1 goes to relevant position, spacing ball 17 is pressed into groove in the presence of limit spring 16, prevent rotating bar further rotate to Operator one " in place " feeds back;If being rotated further, spacing bead 17 is then pressed into aperture.Water valve ball 4 is spheroid, up and down There is inner hexagonal hole to be connected with rotating bar 1 and connecting rod 5, as shown in Fig. 3 section B-Bs, " equator " region there are two angles in the middle of spheroid It is interconnected for 60 ° of holes;Sealing ring 12 is wrapped in water valve ball, is close to housing and has perforate in housing correspondence duct, no Rotate, seal with spheroid;The top half correspondence position of protecgulum 3 also has the duct that three angles are 60 °, from left to right according to Secondary is water inlet, delivery port and discharge outlet;Gas-separating valve portion is similar with water valve part, and simply fore shell has lacked a passage.Work as handle The gentle valve ball 7 of 14 control water valve ball 4 when rotating just can easily open or closed corresponding water hole or stomata, to switch water filling or row Water state.
The present invention has the advantage that compared with technical background:(1) a water injection switching and control dress are separately provided Put, simple to operate, reliable operation, substantially reduce running cost, improve efficiency;(2) it is incorporated into water valve and air valve are creative Together, improve device integration and improve control precision simultaneously, be conducive to ensureing product quality;(3) sealing ring sealing is combined With the seal means such as packing seal, it is ensured that will not gas leakage leak in the course of work.
Brief description of the drawings
Fig. 1-it is general assembly drawing
Fig. 2 is section A-A figure
Fig. 3 is section B-B figure
Fig. 4 is section C-C figures
Fig. 5 fundamental diagrams
Embodiment
The present invention will be further described below in conjunction with the accompanying drawings:
The present invention is as shown in figure 1, two parts above and below being divided into:The above is that water valve is responsible for water filling and draining, and here is Air valve is responsible for gas injection.Primary structure includes:Handle 14, rotating bar 1, through hole screw 2, protecgulum 3, filler 6, water valve ball 4, sealing ring 12nd, connecting rod 5, air valve ball 7, adjusting pad 8, bonnet 9, limit plunger 15, limit spring 16, spacing ball 17.Handle 14, which is arranged on, to be rotated It is connected on bar 1 with water valve ball 4 and is connected again by connecting rod 5 with air valve ball 7, reaches co-rotational purpose.Rotating bar 1, connecting rod 5 with There is filler 6 between housing, sealing prevents water, gas from leaking.Different with pressure there are different choosings generally according to the type of medium Select.Front and rear covers are connected by screw rod 11.Adjusting pad 8 plays a part of adjustment front and rear covers gap while sealing, can be with Mismachining tolerance is offset to a certain extent.Sealing ring 12 is wrapped in the gentle valve ball 7 of water valve ball 4, and in the duct correspondence position of protecgulum 3 There is perforate.
As shown in Fig. 2 section A-As, there is an aperture on through hole screw 2, the inside is equipped with limit plunger 15, limit spring 16 and limit Position ball 17.Limit plunger 15, by being threadably mounted in the aperture of through hole screw 2, is that limit spring 16 provides support.Turning simultaneously The correspondence position of lever 1 has two spherical grooves, and their angles with circle center line connecting are 60 °.When rotating bar 1 goes to relevant position When, spacing ball 17 is pressed into groove in the presence of limit spring 16, prevents rotating bar from further rotating to operator one and " arrives The feedback of position ";If being rotated further, spacing ball 17 is then pressed into aperture.In this way, by design " note can be in water injection valve The position of water " state is fed back for one in place to operator, is rotated further by 60 ° when being switched to " gas injection draining " state again to operator one Individual feedback.This can effectively improve operation precision.
As shown in Fig. 3 section B-Bs, there is the hole connection that two angles are 60 ° in the middle of water valve ball, protecgulum 3 is also in correspondence position The hole for having 3 mutual angles to be 60 °, is followed successively by water inlet, delivery port and discharge outlet from left to right.Water inlet water pump provides high Water is pressed, delivery port is connected by flexible pipe with mould water injection device water inlet, discharge outlet is run in pond.Water valve ball 4 rotates 60 ° just Water inlet and delivery port can be connected or connect delivery port and discharge outlet or all disconnect.
Such as Fig. 4 sections C-C, air valve part is similar with water valve part, and difference is that air valve only has air inlet and gas outlet.Enter Gas port connects that there is provided high pressure gas by flexible pipe with air pump.Gas outlet is connected by flexible pipe with mould water injection device air inlet.Make Used time controls the gentle synchronous axial system of valve ball 7 of water valve ball 4 to select different passages to be switched on or switched off to reach switching note by handle 14 The purpose of hull-borne.
The a whole set of water injection device course of work is as follows:Mold injection starts water filling after terminating, operation handle 14 notes aqueous vapor Row's control valve turns to location of water injection, illustrates in place after experiencing feedback.Now aqueous vapor note arranges control valve working condition such as In Fig. 5 shown in " water filling " state, water valve ball 4 connects water inlet with delivery port, and air valve ball 7 disconnects any interface.Water under high pressure Out enter mould water injection device by water inlet and delivery port from water pump.Now Water asissted Injection technique enters penetration by water Stage.
Start gas injection draining in sand off and after certain pressurize cool time, by aqueous vapor note row's control Vavle switching To hull-borne.Operation handle 14 drives the gentle valve ball 7 of water valve ball to rotate counterclockwise 60 ° simultaneously, connects delivery port and discharge outlet Logical, air inlet is connected with gas outlet, as shown in Fig. 5 " gas injection draining " state.Then gases at high pressure come out from air pump passes through air inlet Enter mould water injection device with gas outlet, water is squeezed from mould water injection device out by aqueous vapor note row's control by pressed gas Valve delivery port processed and discharge outlet are discharged into pond.
After draining terminates, then operate aqueous vapor note row's control valve handle 14 to rotate 60 °, now go out water inlet, the mouth of a river, discharge outlet All disconnect each other with air inlet, gas outlet, neither water filling nor draining is in " closing down " state as shown in figure 5, preparing Next molding cycle.

Claims (5)

1. a kind of simple reliable Water asissted Injection technique aqueous vapor note row's control valve, it is characterised in that:The present apparatus can be divided into water valve With two parts of air valve, realized and be synchronized with the movement by connecting rod.Its structure mainly includes:Handle 14, rotating bar 1, through hole screw 2, Protecgulum 3, water valve ball 4, sealing ring 12, connecting rod 5, filler 6, air valve ball 7, adjusting pad 8, bonnet 9, limit plunger 15, limit spring 16, Spacing ball 17 etc..Handle 14 controls the gentle synchronous axial system of valve ball 7 of water valve ball 4 by rotating bar 1 and connecting rod 5.Sealing ring 12 is wrapped up On the gentle valve ball 7 " equator " of water valve ball 4, and there is perforate at protecgulum respective channel.Filler 6 is wrapped in rotating bar 1 and connecting rod 5 Around, seal, prevent the gentle leakage of water.There is an aperture on through hole screw 2, the inside is equipped with limit plunger 15, limit spring 16 and spacing ball 17;There are two spherical grooves in the correspondence position of rotating bar 1, their angles with circle center line connecting are 60 °.When turn When lever 1 goes to relevant position, spacing ball 217 is pressed into groove in the presence of limit spring 16, prevents rotating bar from further turning Move and give operator one " in place " feedback;If being rotated further, spacing bead 17 is then pressed into aperture.Water valve ball 4 is spheroid, ball " equator " region has the hole that two angles are 60 ° to be interconnected in the middle of body;The top half correspondence position of protecgulum 3 also has three angles For 60 ° of duct, water inlet, delivery port and discharge outlet are followed successively by from left to right;The latter half air valve is similar with water valve, simply pair Fore shell is answered there was only air inlet and gas outlet;Easily it can just be disconnected or connect when the gentle valve ball 7 of the control water valve of handle 14 ball 4 is rotated Lead to corresponding water hole or stomata, to switch water filling or hull-borne.
2. according to claims 1, a kind of simple reliable Water asissted Injection technique water filling gas note row's control valve, its feature It is:Water valve and air valve are innovatively integrated together by the device, and realize synchronous axial system, reliable in action by connecting rod.
3. according to claims 1, a kind of simple reliable Water asissted Injection technique water filling gas note row's control valve, its feature It is:There is an aperture on through hole screw 2, the inside is equipped with limit plunger 15, limit spring 16 and spacing ball 17;Simultaneously in rotating bar 1 Correspondence position have two spherical grooves, their angles with circle center line connecting are 60 °.When rotating bar 1 goes to relevant position, limit Position ball 17 is pressed into groove in the presence of limit spring 16, prevents rotating bar from further rotating anti-to operator one " in place " Feedback;If being rotated further, spacing bead 17 is then pressed into aperture.
4. according to claims 1, a kind of simple reliable Water asissted Injection technique water injection device, it is characterised in that: Angle is 60 ° each other for water valve ball 4, air valve ball 7 and the related duct of protecgulum 3, such a control water valve of structure lower handle 14 ball 4 Gentle valve ball 7 rotate 60 ° can open or closed corresponding water hole or stomata, to switch water filling or hull-borne.
5. according to claims 1, a kind of simple reliable Water asissted Injection technique water injection device, it is characterised in that: Sealing ring 12 is coated on spherome surface positioned at water valve ball 4 " equator " position but not rotated (air valve ball 7 is also the same) with spheroid, and , will not gas leakage or leak and sealing ring 12 is also sphere with the face that water valve ball 4 is fitted, it is ensured that sealed reliable.
CN201710222056.5A 2017-04-06 2017-04-06 Simple and reliable water-assisted injection molding process water-gas injection and discharge control valve Active CN107042621B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710222056.5A CN107042621B (en) 2017-04-06 2017-04-06 Simple and reliable water-assisted injection molding process water-gas injection and discharge control valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710222056.5A CN107042621B (en) 2017-04-06 2017-04-06 Simple and reliable water-assisted injection molding process water-gas injection and discharge control valve

Publications (2)

Publication Number Publication Date
CN107042621A true CN107042621A (en) 2017-08-15
CN107042621B CN107042621B (en) 2023-04-07

Family

ID=59545271

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710222056.5A Active CN107042621B (en) 2017-04-06 2017-04-06 Simple and reliable water-assisted injection molding process water-gas injection and discharge control valve

Country Status (1)

Country Link
CN (1) CN107042621B (en)

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1170840A (en) * 1996-07-11 1998-01-21 陈志坚 Multiple channel ball core valve
DE19740392A1 (en) * 1997-09-05 1999-03-25 Rainer Mueller Fourway cock with housing with four inlets or outlets
WO2000007794A1 (en) * 1998-08-01 2000-02-17 Crewe Precision Engineering Limited Nozzle valve for gas assisted injection moulding
US20030228485A1 (en) * 2002-05-22 2003-12-11 Atsushi Yusa Molded article, injection molding method and apparatus
WO2005097454A1 (en) * 2004-04-01 2005-10-20 Microcell Device for controlling a media flow preferably at very high pressures
CN1817610A (en) * 2006-03-03 2006-08-16 华南理工大学 Water aided injection forming device
CN101865531A (en) * 2010-06-09 2010-10-20 黎晚滔 Water and gas coupled valve of gas water heater
CN202708175U (en) * 2012-04-18 2013-01-30 佛山市日丰企业有限公司 Valve ball and frost valve provided with the same
CN103407087A (en) * 2013-08-26 2013-11-27 华东交通大学 Water-assisted (co-injection) injection mold for complex-formed tube and stick plastic parts
CN204445433U (en) * 2015-01-23 2015-07-08 捷永电器制造(深圳)有限公司 A kind of air bleeding valve
CN204610959U (en) * 2015-05-06 2015-09-02 台州中天卫厨有限公司 One key escape cock
CN105599246A (en) * 2016-01-22 2016-05-25 华东交通大学 Simple and reliable water injecting and draining device for water-driving projectile assisted injection molding process
CN105643874A (en) * 2016-01-22 2016-06-08 华东交通大学 Gas injection device used for gas-drive auxiliary pellet injection molding technology
US20170067665A1 (en) * 2014-05-14 2017-03-09 Belimo Holding Ag 6-way valve and hvac system with such a 6-way valve

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1170840A (en) * 1996-07-11 1998-01-21 陈志坚 Multiple channel ball core valve
DE19740392A1 (en) * 1997-09-05 1999-03-25 Rainer Mueller Fourway cock with housing with four inlets or outlets
WO2000007794A1 (en) * 1998-08-01 2000-02-17 Crewe Precision Engineering Limited Nozzle valve for gas assisted injection moulding
US20030228485A1 (en) * 2002-05-22 2003-12-11 Atsushi Yusa Molded article, injection molding method and apparatus
WO2005097454A1 (en) * 2004-04-01 2005-10-20 Microcell Device for controlling a media flow preferably at very high pressures
CN1817610A (en) * 2006-03-03 2006-08-16 华南理工大学 Water aided injection forming device
CN101865531A (en) * 2010-06-09 2010-10-20 黎晚滔 Water and gas coupled valve of gas water heater
CN202708175U (en) * 2012-04-18 2013-01-30 佛山市日丰企业有限公司 Valve ball and frost valve provided with the same
CN103407087A (en) * 2013-08-26 2013-11-27 华东交通大学 Water-assisted (co-injection) injection mold for complex-formed tube and stick plastic parts
US20170067665A1 (en) * 2014-05-14 2017-03-09 Belimo Holding Ag 6-way valve and hvac system with such a 6-way valve
CN204445433U (en) * 2015-01-23 2015-07-08 捷永电器制造(深圳)有限公司 A kind of air bleeding valve
CN204610959U (en) * 2015-05-06 2015-09-02 台州中天卫厨有限公司 One key escape cock
CN105599246A (en) * 2016-01-22 2016-05-25 华东交通大学 Simple and reliable water injecting and draining device for water-driving projectile assisted injection molding process
CN105643874A (en) * 2016-01-22 2016-06-08 华东交通大学 Gas injection device used for gas-drive auxiliary pellet injection molding technology

Also Published As

Publication number Publication date
CN107042621B (en) 2023-04-07

Similar Documents

Publication Publication Date Title
CN206937901U (en) A kind of simple reliable Water asissted Injection technique aqueous vapor note row's control valve
CN107042621A (en) A kind of simple reliable Water asissted Injection technique aqueous vapor note row's control valve
US9713898B2 (en) Blowing station with compressed air-operated mold clamp, and method for holding together a blow mold of multipiece design
CN103737790B (en) A kind of foaming with gas device
CN204592416U (en) The integrated filling head of vacuum
CN107620739A (en) A kind of water pump seat of changeable reversible passage
CN204592417U (en) External valve controls the integrated filling head of vacuum
CN207533507U (en) Encapsulating vacuum extractor
CN207278573U (en) A kind of water pump seat of changeable reversible passage
CN208197417U (en) A kind of novel sealing structure of liquid silica gel injection molding
CN109268513A (en) A kind of design of air sealed valve
CN109514821A (en) A kind of injection mold exhaust system and injection mold
CN107521011A (en) Rubber V belt circular mold vulcanizing device
CN107061825A (en) A kind of simple reliable Water asissted Injection technique water injection device
CN207378252U (en) A kind of water heating valve multisection type valve rod
CN210484630U (en) Air valve device
CN204872094U (en) A mould group for making gas column bag that takes precautions against earthquakes
CN104791523B (en) Vacuum integrates filling head
CN209213019U (en) A kind of air sealed valve
CN208854969U (en) Mold suction mechanism
CN203906824U (en) Circular arc-shaped pneumatic switch valve
CN206545711U (en) Hot and cold water triple valve
CN102400901B (en) Change-over valve capable of realizing pumping and aerating functions
CN203305488U (en) Two-segment type low-pressure glue injection machine
CN205056943U (en) Storage tank in middle of tunica albuginea is fashioned

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