CN108262410A - Major diameter stainless steel cable and preparation method thereof - Google Patents

Major diameter stainless steel cable and preparation method thereof Download PDF

Info

Publication number
CN108262410A
CN108262410A CN201611258838.6A CN201611258838A CN108262410A CN 108262410 A CN108262410 A CN 108262410A CN 201611258838 A CN201611258838 A CN 201611258838A CN 108262410 A CN108262410 A CN 108262410A
Authority
CN
China
Prior art keywords
stainless steel
diameter
pressure pipe
strand wires
pipe joint
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
CN201611258838.6A
Other languages
Chinese (zh)
Other versions
CN108262410B (en
Inventor
滕德霖
刘双友
冯清俊
秦超
梁伟光
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.)
LIUZHOU HM MACHINERY CO Ltd
Original Assignee
LIUZHOU HM MACHINERY CO Ltd
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 LIUZHOU HM MACHINERY CO Ltd filed Critical LIUZHOU HM MACHINERY CO Ltd
Priority to CN201611258838.6A priority Critical patent/CN108262410B/en
Publication of CN108262410A publication Critical patent/CN108262410A/en
Application granted granted Critical
Publication of CN108262410B publication Critical patent/CN108262410B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21DWORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00Making other particular articles
    • B21D53/46Making other particular articles haberdashery, e.g. buckles, combs; pronged fasteners, e.g. staples
    • B21D53/50Making other particular articles haberdashery, e.g. buckles, combs; pronged fasteners, e.g. staples metal slide-fastener parts

Abstract

The present invention relates to a kind of major diameter stainless steel cables and preparation method thereof, including stainless steel steel strand wires and two pressure pipe joints, the pressure pipe joint is provided with endoporus, the endoporus of the pressure pipe joint is made of inclined hole and isometrical hole, the inclined hole diameter is tapered into from end toward centre, the minimum diameter of inclined hole is identical with the diameter in isometrical hole, tapered plug there are one being set on the central hair at the stainless steel steel strand wires both ends, stainless steel steel strand wires both ends respectively penetrate in the endoporus of pressure pipe joint and are integrated with pressure pipe joint by compression moulding, a diameter of 36~80mm of the stainless steel steel strand wires.The present invention uses new production technology, can process the product parameters such as the press type major diameter stainless steel cable of 36~80mm of diameter, minimum breaking force and meet relevant regulations, and shape is very round, more attractive.

Description

Major diameter stainless steel cable and preparation method thereof
Technical field
The present invention relates to a kind of stainless steel cable and preparation method thereof, more particularly to a kind of major diameter stainless steel cable and its Production method.
Background technology
Stainless steel cable on the market is divided into 2 kinds at present, and one kind is hot-cast type stainless steel cable, another kind be press type not Become rusty steel cable;Drag-line below 36 millimeters of diameter is that the stainless steel cable of press type, 36 millimeters of diameter or more is hot-cast type.There is phase 36 millimeters can only be accomplished greatly, and also there are no more than 36 millimeters in actual production by closing the stainless steel cable of standard gauge level pressure Stainless steel cable can use compression moulding.
In addition, existing press type stainless steel cable(As shown in Figure 1)Conventional crimping mode be upper pushing(Such as Fig. 2 institutes Show), the steel for wire drawing appearance pressed out in this way is not round enough, and not enough tightly, steel strand wires big 36mm just need 3000 tons of forcing press It could press solid, the steel strand wires of bigger can not just crimp securely.And crimp head is somewhat flat, and both sides can be upper and lower The contact surface of mould has two muscle, as shown in figure 3, this two muscle need later stage manual polishing to handle, takes very much.
Those skilled in the art knows, in actual production, the stainless steel cable of compacting is drawn than the stainless steel of hot-cast Suo Chengben is low, and performance and appearance are the same.If can develop a kind of major diameter press type stainless steel cable and its Production method will reduce the production cost of enterprise, improve the benefit of enterprise.
Invention content
The technical problem to be solved by the present invention is to:The major diameter stainless steel of a kind of press type, a diameter of 36~80mm are provided Drag-line and preparation method thereof, the pressure pipe joint of the press type major diameter stainless steel cable crimp securely with stainless steel steel strand wires, The product parameters such as minimum breaking force meet relevant regulations, and shape is very round, more attractive.
Solving the technical solution of above-mentioned technical problem is:A kind of major diameter stainless steel cable, including stainless steel steel strand wires and Two pressure pipe joints, the pressure pipe joint are provided with endoporus, and the endoporus of the pressure pipe joint is made of inclined hole and isometrical hole, The inclined hole diameter is tapered into from end toward centre, and the minimum diameter of inclined hole is identical with the diameter in isometrical hole, it is described not Tapered plug there are one being set on the central hair at rust steel steel strand wires both ends, stainless steel steel strand wires both ends respectively penetrate pressure pipe joint It is integrated in endoporus and with pressure pipe joint by compression moulding, a diameter of 36~80mm of the stainless steel steel strand wires.
The tapered plug is the frustum cone structure for having centre bore, and the outside diameter of tapered plug is that stainless steel steel strand wires central hair is straight 1.8~2.3 times of diameter, the length of tapered plug are 5~10 times of its outside diameter, and the gradient β of tapered plug is 6~8 °, tapered plug centre bore Diameter it is identical with stainless steel steel strand wires central hair diameter.
The present invention another technical solution be:The production method of above-mentioned major diameter stainless steel cable, includes the following steps:
(1) the stainless steel steel strand wires of an a diameter of 36~80mm are taken, first penetrate annular extrusion die on stainless steel steel strand wires, To be squeezed into type hole, being squeezed into type hole is made of bellmouth and integer circular hole at the middle part of the annular extrusion die, annular The bellmouth of extrusion die is towards the end of stainless steel steel strand wires;
(2) a tapered plug is squeezed on the central hair of stainless steel steel strand wires one end, before compression moulding, the diameter ratio of tapered plug centre bore Big 0.5~the 1mm of stainless steel steel strand wires central hair diameter;
(3) a pressure pipe joint is taken, and before compression moulding, the diameter of bore of pressure pipe joint is more than the stainless steel steel strand wires for squeezing into tapered plug Then the stainless steel steel strand wires end for squeezing into tapered plug is inserted into the endoporus of pressure pipe joint by 0.5~1mm of end diameter;
(4) crimp is taken, and the crimp includes mold and lower mold, is respectively arranged on mold and lower mold Lower mold is placed on forcing press by circular groove, and (3) pressure pipe joint that step assembles is placed on the semicircle of lower mold In groove, mold is then suppressed downwards by pressure pipe joint using forcing press, makes the endoporus of pressure pipe joint and stainless steel steel strand wires Securely connection, crimp is taken out by pressure pipe joint;
(5) annular extrusion die is fixed, pressure pipe joint to annular extrusion die is squeezed using forcing press, makes pressure pipe joint complete Portion is squeezed through the integer circular hole of annular extrusion die;
(6) annular extrusion die is penetrated on stainless steel steel strand wires again, stainless steel steel strand wires the other end repeat step (2)~ (5) to get to press type major diameter stainless steel cable.
The tapered plug of the press type major diameter stainless steel cable is the frustum cone structure for having centre bore, and the big end of tapered plug is straight Diameter is 1.8~2.3 times of stainless steel steel strand wires central hair diameter, and the length of tapered plug is 5~10 times of its outside diameter, tapered plug Gradient β is 6~8 °, and the diameter of tapered plug centre bore is identical with stainless steel steel strand wires central hair diameter.
The length for being squeezed into type hole of the annular extrusion die is 75~85mm.
Circular groove on the mold and lower mold is smaller 4~6mm than the outer diameter of pressure pipe joint.
(4) mold is suppressed downwards pressure pipe joint by step using forcing press, the endoporus and stainless steel steel for making pressure pipe joint twist During line securely connects, pressure >=2000 ton of forcing press.
Due to using the above structure, the invention has the advantages that:
1st, the major diameter stainless steel cable of the present invention is press type, is applicable to the stainless steel cable of 36-80 mm dias.This hair The structure of bright major diameter stainless steel cable and conventional difference before crimping, are needed in the central hair there of stainless steel steel strand wires, It makes a call to a tapered plug, the steel strand wires end of the inside is big after crimping, forms funnel-form, and anticreep performance is better, minimum fracture Pulling force complies fully with relevant regulations.
2nd, for the present invention using the technique of 2 crimping, the anchor head for crimping out is more secured, more attractive.It uses for the first time Be that the conventionally lower mode crimped is crimped, second of extrusion die using circular ring type carries out shaping extruding, makes Anchor head crimping is more secured and very round, and appearance is beautiful.
In the following, in conjunction with the accompanying drawings and embodiments to the technical characteristic of the major diameter stainless steel cable of the present invention and preparation method thereof It is further described.
Description of the drawings
Fig. 1:Existing compression joint type stainless steel cable structure diagram.
Fig. 2:Existing conventional crimping schematic diagram.
Fig. 3:Existing routine crimping mode, which suppresses the both sides come, the stainless steel cable schematic diagram of two convex ribs.
Fig. 4:The major diameter stainless steel cable schematic diagram of the present invention.
Fig. 5:The major diameter stainless steel cable schematic diagram of the present invention(Show tapered plug structure).
Fig. 6:The pressure pipe joint structure diagram of the present invention.
Fig. 7:The tapered plug front sectional view of the present invention.
Fig. 8:The tapered plug right view of the present invention.
Fig. 9:The first step of the present invention crimps schematic diagram up and down.
Figure 10:The D-D sectional views of Fig. 9.
Figure 11:The second step shaping of the present invention squeezes schematic diagram.
Figure 12:The left view of Figure 11.
In figure:The existing stainless steel steel strand wires of A1-, the existing pressure pipe joints of A2-, the existing crimps of A3-, A4- convex ribs.
1- stainless steel steel strand wires, 11- central hairs, 2- pressure pipe joints, 21- endoporus, 211- inclined holes, the isometrical holes of 212-, 3- cones It fills in, 31- centre bores, 4- crimps, 41- molds, mold under 42-, 5- annular extrusion dies, 51- is squeezed into type hole, 511- Bellmouth, 512- integer circular holes.
Arrow in figure represents the direction of extrusion.
Specific embodiment
Embodiment 1:A kind of major diameter stainless steel cable as shown in Fig. 4-Fig. 8, is pressed including stainless steel steel strand wires 1 and two Pipe fitting 2, the pressure pipe joint are provided with endoporus 21, and the endoporus 21 of the pressure pipe joint is by inclined hole 211 and isometrical hole 212 It forms, the inclined hole diameter is tapered into from end toward centre, and the minimum diameter of inclined hole is identical with the diameter in isometrical hole, described Stainless steel steel strand wires both ends central hair 11 on be set with there are one tapered plug 3, stainless steel steel strand wires both ends respectively penetrate pressure Be integrated in the endoporus of pipe fitting and with pressure pipe joint by compression moulding, the stainless steel steel strand wires a diameter of 36~ 80mm。
In the present embodiment, the tapered plug 3 is the frustum cone structure for having centre bore 31, and the outside diameter of tapered plug is stainless steel 1.8~2.3 times of steel strand wires central hair diameter, preferably 2 times, the length of tapered plug are 5~10 times of its outside diameter, preferably 6-7 Times, the gradient β of tapered plug is 6~8 °, preferably 7 °, and the diameter of tapered plug centre bore is identical with stainless steel steel strand wires central hair diameter.
Embodiment 2:A kind of production method of major diameter stainless steel cable as described in Example 1, includes the following steps:
(1) the stainless steel steel strand wires 1 of an a diameter of 36~80mm are taken, annular extrusion die 5 is first penetrated into stainless steel steel strand wires On, to be squeezed into type hole 51, the length for being squeezed into type hole 51 of annular extrusion die is at the middle part of the annular extrusion die 75~85mm, preferably 80mm, being squeezed into type hole is made of bellmouth 511 and integer circular hole 512, bellmouth 511 and integer circle The length in hole 512 is respectively 40mm or so, and the bellmouth of annular extrusion die is towards the end of stainless steel steel strand wires;
(2) a tapered plug 3 is squeezed on the central hair 11 of 2 one end of stainless steel steel strand wires;The tapered plug 3 is with centre bore 31 Frustum cone structure, the outside diameter of tapered plug is 1.8~2.3 times of stainless steel steel strand wires central hair diameter, preferably 2 times, tapered plug Length is 5~10 times of its outside diameter, and preferably 6-7 times, the gradient β of tapered plug is 6~8 °, preferably 7 °, before compression moulding, tapered plug The diameter of centre bore is bigger 0.5~1mm than stainless steel steel strand wires central hair diameter, in order to which tapered plug is squeezed into stainless steel steel strand wires On heart silk 11,
(3) a pressure pipe joint 2 is taken, and before compression moulding, the endoporus of pressure pipe joint is isometrical hole, has a diameter larger than and squeezes into tapered plug Stainless steel steel strand wires 0.5~1mm of end diameter, in order to which stainless steel steel strand wires penetrate, stainless steel steel that then will squeeze into tapered plug Twisted wire end is inserted into the endoporus of pressure pipe joint, and is inserted into the bottom of the endoporus of pressure pipe joint;
(4) crimp 4 is taken, and the crimp includes mold 41 and lower mold 42, set respectively on mold and lower mold Circular groove is equipped with, circular groove is smaller 4~6mm than the outer diameter of pressure pipe joint, preferably 5mm, and lower mold is placed on pressure On machine, (3) pressure pipe joint that step assembles is placed in the semi-circular recesses of lower mold, then using forcing press by mold Compacting pressure pipe joint downwards, makes the endoporus of pressure pipe joint securely be connect with stainless steel steel strand wires, after compression moulding, tapered plug centre bore Diameter it is identical with stainless steel steel strand wires central hair diameter, the endoporus 21 of pressure pipe joint is shaped to inclined hole 211 and isometrical hole 212, The inclined hole diameter is tapered into from end toward centre, and the minimum diameter of inclined hole is identical with the diameter in isometrical hole, pressure pipe joint Endoporus be connected firmly with squeezing into the stainless steel steel strand wires outer rim of tapered plug, pressure pipe joint is finally taken out into crimp;
(5) annular extrusion die is fixed, pressure pipe joint to annular extrusion die is squeezed using forcing press, makes pressure pipe joint complete Portion is squeezed through the integer circular hole 512 of annular extrusion die;
(6) annular extrusion die is penetrated on stainless steel steel strand wires again, stainless steel steel strand wires the other end repeat step (2)~ (5) to get to press type major diameter stainless steel cable.
In the embodiment of the present invention 2, (4) mold " is suppressed downwards pressure pipe joint using forcing press, makes pressure pipe joint by step Endoporus securely connect with stainless steel steel strand wires " during, pressure >=2000 ton of forcing press are better in this way.
The examining report of the major diameter stainless steel cable such as following table being prepared using the present invention.
As can be seen from the above table, using the present invention be prepared static load anchoring performance η a of major diameter stainless steel cable, meet The requirement of YB/T4294-2012 stainless steel cable standards.

Claims (7)

1. a kind of major diameter stainless steel cable, including stainless steel steel strand wires(1)With two pressure pipe joints(2), the pressure pipe connects Head is provided with endoporus(21), it is characterised in that:The endoporus of the pressure pipe joint(21)It is by inclined hole(211)With isometrical hole(212) It forms, the inclined hole diameter is tapered into from end toward centre, and the minimum diameter of inclined hole is identical with the diameter in isometrical hole, described Stainless steel steel strand wires both ends central hair(11)On be set with there are one tapered plug(3), stainless steel steel strand wires both ends are worn respectively Enter in the endoporus of pressure pipe joint and be integrated with pressure pipe joint by compression moulding, a diameter of the 36 of the stainless steel steel strand wires ~80mm.
2. major diameter stainless steel cable according to claim 1, it is characterised in that:The tapered plug(3)It is with center Hole(31)Frustum cone structure, the outside diameter of tapered plug is 1.8~2.3 times of stainless steel steel strand wires central hair diameter, the length of tapered plug Degree is 5~10 times of its outside diameter, and the gradient β of tapered plug is 6~8 °, diameter and the stainless steel steel strand wires center of tapered plug centre bore Silk diameter is identical.
3. a kind of production method of major diameter stainless steel cable as described in claim 1, it is characterised in that:Including following step Suddenly:
(1) the stainless steel steel strand wires of an a diameter of 36~80mm are taken(1), first by annular extrusion die(5)Penetrate stainless steel steel strand On line, the middle part of the annular extrusion die is is squeezed into type hole(51), it is by bellmouth to be squeezed into type hole(511)And integer Circular hole(512)It forms, the bellmouth of annular extrusion die is towards the end of stainless steel steel strand wires;
(2) in stainless steel steel strand wires(2)The central hair of one end(11)On squeeze into a tapered plug(3), before compression moulding, tapered plug center The diameter in hole is bigger 0.5~1mm than stainless steel steel strand wires central hair diameter;
(3) a pressure pipe joint is taken(2), before compression moulding, the diameter of bore of pressure pipe joint is more than the stainless steel steel strand for squeezing into tapered plug Then the stainless steel steel strand wires end for squeezing into tapered plug is inserted into the endoporus of pressure pipe joint by thread end 0.5~1mm of diameter;
(4) crimp is taken(4), the crimp includes mold(41)With lower mold(42), on mold and lower mold Circular groove is respectively arranged with, lower mold is placed on forcing press, (3) pressure pipe joint that step assembles is placed on lower die In the semi-circular recesses of tool, mold is then suppressed downwards by pressure pipe joint using forcing press, make the endoporus of pressure pipe joint with not Rust steel steel strand wires securely connect, and pressure pipe joint is taken out crimp;
(5) annular extrusion die is fixed, pressure pipe joint to annular extrusion die is squeezed using forcing press, makes pressure pipe joint complete Portion is squeezed through the integer circular hole of annular extrusion die(512);
(6) annular extrusion die is penetrated on stainless steel steel strand wires again, stainless steel steel strand wires the other end repeat step (2)~ (5) to get to press type major diameter stainless steel cable.
4. the production method of major diameter stainless steel cable according to claim 3, it is characterised in that:The press type is big The tapered plug of diameter stainless steel cable(3)It is with centre bore(31)Frustum cone structure, the outside diameter of tapered plug is that stainless steel steel twists 1.8~2.3 times of line central hair diameter, the length of tapered plug are 5~10 times of its outside diameter, and the gradient β of tapered plug is 6~8 °, The diameter of tapered plug centre bore is identical with stainless steel steel strand wires central hair diameter.
5. the production method of major diameter stainless steel cable according to claim 3, it is characterised in that:The annular extrusion Mold is squeezed into type hole(51)Length be 75~85mm.
6. the production method of major diameter stainless steel cable according to claim 3, it is characterised in that:The mold and Circular groove on lower mold is smaller 4~6mm than the outer diameter of pressure pipe joint.
7. the production method of major diameter stainless steel cable according to claim 3, it is characterised in that:(4) step uses pressure Mold is suppressed downwards pressure pipe joint by machine, is made during the endoporus of pressure pipe joint securely connect with stainless steel steel strand wires, pressure Pressure >=2000 ton of power machine.
CN201611258838.6A 2016-12-30 2016-12-30 Large-diameter stainless steel inhaul cable and manufacturing method thereof Active CN108262410B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611258838.6A CN108262410B (en) 2016-12-30 2016-12-30 Large-diameter stainless steel inhaul cable and manufacturing method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611258838.6A CN108262410B (en) 2016-12-30 2016-12-30 Large-diameter stainless steel inhaul cable and manufacturing method thereof

Publications (2)

Publication Number Publication Date
CN108262410A true CN108262410A (en) 2018-07-10
CN108262410B CN108262410B (en) 2020-05-19

Family

ID=62754663

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611258838.6A Active CN108262410B (en) 2016-12-30 2016-12-30 Large-diameter stainless steel inhaul cable and manufacturing method thereof

Country Status (1)

Country Link
CN (1) CN108262410B (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005118811A (en) * 2003-10-15 2005-05-12 Toyota Motor Corp Tube stock for hydroforming and manufacturing method for the same, and hydroformed product
CN2825803Y (en) * 2005-09-23 2006-10-11 江阴法尔胜毅强工程材料有限公司 Connector anchor for prestressed structure
CN102205375A (en) * 2010-12-30 2011-10-05 广东坚朗五金制品有限公司 Method for pressing press pipe joint of steel inhaul cable
CN102425270A (en) * 2011-09-09 2012-04-25 建研科技股份有限公司 Major diameter steel strand extruding type ground tackle
CN102587278A (en) * 2012-03-09 2012-07-18 柳州豪姆机械有限公司 Chill-cast steel-stranded anchor cable
CN206373270U (en) * 2016-12-30 2017-08-04 柳州豪姆机械有限公司 Major diameter stainless steel cable

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005118811A (en) * 2003-10-15 2005-05-12 Toyota Motor Corp Tube stock for hydroforming and manufacturing method for the same, and hydroformed product
CN2825803Y (en) * 2005-09-23 2006-10-11 江阴法尔胜毅强工程材料有限公司 Connector anchor for prestressed structure
CN102205375A (en) * 2010-12-30 2011-10-05 广东坚朗五金制品有限公司 Method for pressing press pipe joint of steel inhaul cable
CN102425270A (en) * 2011-09-09 2012-04-25 建研科技股份有限公司 Major diameter steel strand extruding type ground tackle
CN102587278A (en) * 2012-03-09 2012-07-18 柳州豪姆机械有限公司 Chill-cast steel-stranded anchor cable
CN206373270U (en) * 2016-12-30 2017-08-04 柳州豪姆机械有限公司 Major diameter stainless steel cable

Also Published As

Publication number Publication date
CN108262410B (en) 2020-05-19

Similar Documents

Publication Publication Date Title
CN202167812U (en) Strain clamp of aluminium alloy cored aluminum stranded wire
US2427756A (en) Method of producing serrated sleeves
CA2172267C (en) Swaging apparatus and method
CN206373270U (en) Major diameter stainless steel cable
CN108262410A (en) Major diameter stainless steel cable and preparation method thereof
CN107431281A (en) Terminal and the electric wire with terminal
CN205763557U (en) A kind of dropper crimp
CN202111438U (en) Tensioning resistant hardware assembly special for composite material core multiple capacity aluminum stranded conductor
JP4713675B1 (en) Method for manufacturing hose fittings
CN207217975U (en) Terminal bonding mould is used in high-voltage wiring harness production
CN205130237U (en) Asymmetric ball pivot joint undergauge frock
KR20120010183A (en) Method of manufacturing mouthpiece for hose
CN102447169A (en) Lead crimping tube
CN107242263A (en) A kind of steamed stuffed bun process equipment
CN107309381B (en) Material extrusion die and forming method thereof
CN104214273B (en) A kind of Guywire tower aluminium hydraulic pressed connecting pipe and mouth of pipe design method
CN204127204U (en) A kind of Guywire tower aluminium hydraulic pressed connecting pipe
EP2398113B1 (en) A method for manufacturing terminals for electric resistors
CN217121619U (en) Multistation temperature upsetting die for thread inserts
EP1479132B1 (en) Method for crimping a contact means to a multi-thread conductor and a crimping tool herefor
CN113002371A (en) Dropper pre-allocation method
CN203809599U (en) Wire rope terminal
JP4810388B2 (en) Twisted wire conductor and manufacturing method thereof
CN110185198A (en) A kind of fixing end anchorage and preparation method thereof of multilayer steel wire structural steel twisted wire
CN211638166U (en) Support crotch hinge apparatus for producing

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