CN203426231U - External high-pressure hydroforming device for pipe material - Google Patents
External high-pressure hydroforming device for pipe material Download PDFInfo
- Publication number
- CN203426231U CN203426231U CN201320570723.6U CN201320570723U CN203426231U CN 203426231 U CN203426231 U CN 203426231U CN 201320570723 U CN201320570723 U CN 201320570723U CN 203426231 U CN203426231 U CN 203426231U
- Authority
- CN
- China
- Prior art keywords
- tubing
- cavity
- pressure liquid
- building mortion
- groove
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
The utility model provides an external high-pressure hydroforming device for a pipe material. The device comprises a mold core, an upper cavity provided with a groove at the bottom, and a lower cavity provided with a groove at the top, wherein a fluid medium injecting channel communicated with the grooves is formed in the upper cavity or the lower cavity; after the grooves formed in the upper cavity and the lower cavity are closed, an accommodating cavity with closing side edges and openings at the two ends is formed, the diameters of incircles of sections at the two openings at the two ends of the accommodating cavity are not less than the outer diameter of the pipe material; the diameter of an incircle of the internal section of the accommodating cavity is greater than the diameters of the incircles of the sections at the two openings at the two ends of the accommodating cavity; sealing rings for sealing the outer wall of the pipe material and the accommodating cavity are arranged at the openings at the two ends. The external high-pressure hydroforming device can enable the blank choosing size of parts to break through the blank choosing limitation of the existing internal high-pressure hydroforming technique, the actual extension condition of the material is effectively reduced by adopting the pipe material with larger pipe diameter to enable hollow-structure parts to be used in a larger range, so that the effects of saving the materials of the parts and prolonging the service lives of the parts are achieved, and the innovation pace of novel technologies in the industrial manufacturing field can be effectively promoted.
Description
Technical field
The utility model relates to a kind of hydroforming equipment, relates in particular to the outer high-pressure liquid-filling building mortion of a kind of tubing.
Background technology
Part is adopted the structure of " real with empty generation " more and more general in industrial circle, meeting under the prerequisite of part bearing load, adopt hollow-core construction part to reach the object of loss of weight, material-saving, thereby make the trend of part lightweight, economized more and more obvious.At present, hollow-core construction part simple in structure can adopt the preparation of tubing inner high voltage liquid-filling shaping technology, manage the research and development of inner high voltage liquid-filling shaping technology and coming into operation of relevant device simultaneously, make the industrial applications of forming high pressure in pipe part obtain tremendous development, especially in automobile technology and household electric appliances, on the other hand, in other industry, as petrochemical industry and building industry, structural member and some functional part that these industries adopt, cross sectional shape is complicated, be multi-head spiral or plum-shaped structure more, be limited by pipe extension limit, be not suitable for adopting this class hollow-core construction part of forming high pressure in pipe process forming, this has seriously restricted exploitation and the application of tubing flexible forming part in petrochemical industry and building trade, also make these industries by adopting hollow structural component or changing part material to reach saving part material, the process that extends part life is hindered, and industry technology innovation paces have finally been delayed.
Utility model content
Need explanation, generally pressure >=30MPa is called high pressure in the industry, and it is super-pressure that pressure >=100MPa can be described as.
The purpose of this utility model is to propose the outer high-pressure liquid-filling building mortion of a kind of tubing, it can adopt the outer high-pressure liquid-filling forming technology of tubing to prepare part, make part select base size to break through original inner high voltage liquid-filling shaping technique and select base restriction, and can be by adopting the more tubing of Large Diameter Pipeline effectively to reduce the actual extension situation of material, make hollow-core construction part have wider application, to reach saving part material, extend the effects such as part life, and can effectively promote the innovation paces of industry manufacture field new technology.
For reaching this object, the utility model is by the following technical solutions: the outer high-pressure liquid-filling building mortion of a kind of tubing, it comprises: core rod, the reeded upper cavity in bottom, the reeded lower chamber in top, upper cavity or lower chamber have the fluid media (medium) injection channel that is communicated with its inner groovy, groove on upper cavity and lower chamber forms the cavity volume of a side sealing both ends open after its matched moulds, inscribed circle diameter >=the tube outer diameter in cross section, cavity volume both ends open place, the inscribed circle diameter in the cross section, inscribed circle diameter > cavity volume both ends open place of cavity volume inner section, at cavity volume both ends open place, be provided with the sealing ring of outer pipe wall and cavity volume sealing.
The utility model also provides a kind of method of using the outer high-pressure liquid-filling building mortion of aforementioned tubes to be shaped to hollow tubular product, and it comprises the steps:
Step 1) is first placed in core rod the tubing of hollow, then tubing is placed in the groove on the lower chamber of the outer high-pressure liquid-filling building mortion of aforementioned tubes;
Step 2) the upper and lower cavity of matched moulds, the groove that tubing is placed on upper cavity and lower chamber forms in the cavity volume of a side sealing both ends open, and because of the effect of sealing ring, outer pipe wall and chamber wall form an airtight cavity;
Step 3) is injected fluid media (medium) by pump and super high pressure fluid generating means in fluid media (medium) injection channel, making fluid media (medium) be full of airtight cavity, and produce high pressure, is pressure conduction medium by fluid media (medium), tubing in airtight cavity is inwardly produced to plastic deformation, be adjacent to core rod;
Step 4) is shaped to drop back and presses, and opens upper cavity and lower chamber, takes out tubing;
Step 5) is sloughed core rod, obtains goods.
In above-mentioned steps 3) described in super high pressure fluid generating means in super-pressure refer to pressure >=100MPa, this installs the highest pressure >=100MPa of its generation.
In above-mentioned steps 3) described in high pressure refer to pressure >=30MPa, the pressure >=30MPa of the method to forming tubular product.
Preferably, outside aforementioned tubes, in high-pressure liquid-filling building mortion, the cross section of described groove is semicircle.
Preferably, outside aforementioned tubes in high-pressure liquid-filling building mortion, inscribed circle diameter=shaping pipe external diameter in cross section, described cavity volume both ends open place.
Preferably, easy-to-use for reality, outside aforementioned tubes, in high-pressure liquid-filling building mortion, also comprise the fixedly lower bolster of lower chamber.During use, lower bolster is fixed on the workbench of press.
Preferably, easy-to-use for reality, outside aforementioned tubes in high-pressure liquid-filling building mortion, also comprise for the fixing cope match-plate pattern of upper cavity.During use, cope match-plate pattern is loaded on the matched moulds slide block of press, by the lifting platform on press, drives matched moulds slide block to move, it can realize matched moulds and the parting of upper cavity and lower chamber.
During shaping, under High Pressure, the core rod being placed in hollow tubular product may move, and even ejection, therefore preferably, also comprises propping up the fixedly left and right plug of core rod at above-mentioned building mortion.
Easy-to-use for reality, in above-mentioned building mortion, above-mentioned left and right plug is connected on left and right thruster cylinder, is equipped with for controlling the hydraulic manifold block of left and right plug side-to-side movement and the displacement transducer of control plug displacement on left and right thruster cylinder.
In order to control the smooth working of left and right plug energy, in above-mentioned apparatus for converting, also comprise that left and right side selects plate, left and right thruster cylinder is arranged on the outside that left and right side is selected plate, left and right plug is contained in the inner side that left and right side is selected plate, upper and lower template has relative draw-in groove, during matched moulds, the bottom that left and right side is selected plate engages with the draw-in groove on lower bolster, and the top of thruster riser engages with the draw-in groove of cope match-plate pattern.Preferably, can first left and right side be selected to the bottom of plate and the draw-in groove on lower bolster is fixed.
Smooth in order to guarantee the demoulding, in above-mentioned building mortion, the detachable core rod that the core rod using is made for rigid material.
Smooth in order to guarantee the demoulding, in above-mentioned building mortion, the core rod using for high temperature can after-flame or the core rod made of the rigid material of decomposition.
In above-mentioned manufacturing process, described fluid media (medium) is preferably oil or emulsion.
Accompanying drawing explanation
Fig. 1 is the cross sectional representation of the outer high-pressure liquid-filling building mortion of the tubing that provides of the utility model before high-pressure liquid-filling is shaped.
Fig. 2 is the outer high-pressure liquid-filling building mortion A-A in high-pressure liquid-filling shaping forward position Fig. 1 of tubing that the utility model provides
/cross section structure schematic diagram.
Fig. 3 is the cross sectional representation of the outer high-pressure liquid-filling building mortion of the tubing that provides of the utility model preferred embodiment before high-pressure liquid-filling is shaped.
The cross sectional representation of the outer high-pressure liquid-filling building mortion of tubing that Fig. 4 provides for the utility model preferred embodiment after high-pressure liquid-filling is shaped.
Fig. 5 is the cross sectional representation after the outer high-pressure liquid-filling of tubing is shaped.
Accompanying drawing explanation: 1-lower chamber; 2-upper cavity; 3-groove; 4-sealing ring; 5-tubing; 6-core rod; 7-lower bolster; 8-cope match-plate pattern; 9-workbench; 10-matched moulds slide block; 11-plug; 12-thruster cylinder; 13-displacement transducer; 14-hydraulic manifold block; 15-thruster riser; 16-draw-in groove; 17-fluid media (medium) injection channel; 18-airtight cavity.
The specific embodiment
Below in conjunction with accompanying drawing and by the specific embodiment, further illustrate the technical solution of the utility model.Should illustrate that accompanying drawing is only explanation this programme, it is in strict accordance with scale, wherein has for convenience of explanation local zooming in or out, but also have, some are known default.
With reference to accompanying drawing 1 and accompanying drawing 2, the utility model provides a kind of tubing outer high-pressure liquid-filling shaped device, it comprises: core rod 6, the upper cavity 2 of bottom fluted 3, the lower chamber 1 at top fluted 3, upper cavity 2 or lower chamber 1 have the fluid media (medium) injection channel 17 that is communicated with its inner groovy 3, groove 3 on upper cavity 2 and lower chamber 1 forms the cavity volume of a side sealing both ends open after its matched moulds, inscribed circle diameter r >=tube outer diameter the γ in cross section, cavity volume both ends open place, the inscribed circle diameter r in the cross section, inscribed circle diameter R > cavity volume both ends open place of cavity volume inner section, at cavity volume both ends open place, be provided with the sealing ring 4 of outer pipe wall and cavity volume sealing.
The utility model also provides a kind of method of using the outer high-pressure liquid-filling building mortion of aforementioned tubes to be shaped to hollow tubular product, and it comprises the steps:
Step 1) is first placed in core rod 6 tubing 5 of hollow, then tubing 5 is placed in the groove 3 on the lower chamber 1 of the outer high-pressure liquid-filling building mortion of aforementioned tubes;
Step 2) hamper upper cavity 2, and the groove 3 that tubing 5 is placed on upper cavity 2 and lower chamber 1 forms in the cavity volume of a side sealing both ends open, and because of the effect of sealing ring 4, outer pipe wall and chamber wall form an airtight cavity 18;
Step 3) by pump and super-pressure generating means to fluid media (medium) injection channel 17 interior injection fluid media (medium), fluid media (medium) is full of airtight cavity, and produces high pressure, by liquid medium, is pressure conduction medium, tubing in airtight cavity 5 is inwardly produced to plastic deformation, be adjacent to core rod 6;
Step 4) is shaped to drop back and presses, and opens upper cavity 2 and lower chamber 1, takes out tubing 5;
Step 5) is sloughed core rod 6, obtains goods.
In above-mentioned steps 3) described in super high pressure fluid generating means in super-pressure refer to pressure >=100MPa, this installs the highest pressure >=100MPa of its generation.
In above-mentioned steps 3) described in high pressure refer to pressure >=30MPa, the pressure >=30MPa of the method to forming tubular product.
Adopt the outer high-pressure liquid-filling building mortion of above tubing, preparing part selects base size to break through original inner high voltage liquid-filling shaping technique to select base restriction, and can, by adopting the more pipe of Large Diameter Pipeline effectively to reduce the actual extension situation of material, make hollow-core construction part have wider application.
Preferably, outside aforementioned tubes, in high-pressure liquid-filling building mortion, the cross section of described groove 3 is semicircle.Can be so that annular tubing mates with cross section, while guaranteeing to be shaped, act on the isostasy on outer pipe wall.
Preferably, outside aforementioned tubes in high-pressure liquid-filling building mortion, the inscribed circle diameter r=tube outer diameter γ in cross section, described cavity volume both ends open place.So can make outer pipe wall and chamber wall form the fine sealing of closed chamber physical efficiency, more high pressure resistant.
Preferred embodiment
With reference to accompanying drawing 3 and accompanying drawing 4, it provides practical effect extraordinary preferred embodiment.
In this preferred embodiment for reality is easy-to-use, the outer high-pressure liquid-filling building mortion of tubing that the utility model is provided is better applied in real work, it also comprises the fixedly lower bolster 7 of lower chamber 1 on above basis, during use, lower bolster 7 is fixed on the workbench 9 of press; Certainly it also comprises for the fixing cope match-plate pattern 8 of upper cavity 2, during use, cope match-plate pattern 8 is loaded on the matched moulds slide block 10 of press, by the lifting platform drive matched moulds slide block 10 on press, moves, and can realize matched moulds and the parting of upper cavity 2 and lower chamber 1.
Because when being shaped, under High Pressure, the core rod 6 being placed in hollow tubular product 5 may move, even ejection causes the accident, and therefore in this preferred embodiment, building mortion also comprises propping up the fixedly left and right plug 11 of core rod.In order controlling conveniently, above-mentioned left and right plug 11 to be connected on left and right thruster cylinder 12 simultaneously, on thruster cylinder 12, to be equipped with for controlling the hydraulic manifold block 14 of plug 11 side-to-side movements and the displacement transducer 13 of control plug 11 displacements.Simultaneously, in order to control left and right plug 11 energy smooth workings, this device also includes left and right side and selects plate, left and right plug 11 is contained in to the inner side of thruster riser 15, cope match-plate pattern 8 has relative draw-in groove 16 with on lower bolster 7, during matched moulds, the bottom that left and right side is selected plate 15 engages with the draw-in groove 16 on lower bolster 7, and the top that left and right side is selected plate 15 engages with the draw-in groove 16 on cope match-plate pattern 8.Certainly, as this preferred embodiment, first left and right side is selected to the bottom of plate 15 and the draw-in groove 16 on lower bolster 7 and be fixed, can install more stable; Certainly, first left and right side is selected the top of plate 15 and the draw-in groove 16 on cope match-plate pattern 8 be also fixed can, just so need in each forming process, move with matched moulds slide block 10, and then can increase energy consumption, and reduce device stability.
In this preferred embodiment, select stainless steel pipe to form.Tube outer diameter γ is 30mm, and thickness is 3mm; Core rod be shaped as star, its circumscribed circle diameter is 23mm, material is the stainless steel identical with tubing, certainly, select other rigid also can, but the part of not preparing as material core rod is stable in follow-up use procedure, because the core rod of unlike material may be introduced impurity, inapplicable for the part of some specific use; The groove cross section of opening on the upper cavity of the outer high-pressure molding device of tubing using and lower chamber is semicircle, and the degree of depth of groove be the middle shallow structure in edge deeply, and the intermediate groove degree of depth is 25mm, and the edge groove degree of depth is 16mm.
Manufacturing process is as follows: the tubing 5 that first core rod 6 is placed in to hollow, again tubing 5 is placed in the groove 3 on the lower chamber 1 of the outer high-pressure liquid-filling building mortion of aforementioned tubes, by matched moulds slide block 10 hamper upper cavities 2, thruster riser pipe is engaged with the draw-in groove 16 on cope match-plate pattern 8 and lower bolster 7, also the groove 3 tubing 5 being placed on upper cavity 2 and lower chamber 1 forms in the cavity volume of a side sealing both ends open simultaneously, effect because of sealing ring 4, tubing 5 outer walls and chamber wall form an airtight cavity 18, again by left, displacement transducer 13 and hydraulic module 14 that right side pushes away on cylinder 12 are controlled left, right plug 11 moves, core rod 6 is propped up, then pump and super high pressure fluid generating means to fluid media (medium) injection channel 17 interior injection fluid media (medium), fluid media (medium) is full of airtight cavity, and produce high pressure, and by liquid medium, be pressure conduction medium, the tubing in airtight cavity 5 is inwardly pressed and produced plastic deformation, be adjacent to core rod 6, recession to be formed is pressed, and opens upper cavity 2 and lower chamber 1, takes out tubing 5, slough core rod 6, obtain goods.Article cross sections as shown in Figure 5.
The core rod that the utility model scheme is used is made for rigid material, such as carbide alloy, pottery, glass, vulcanie etc.
Smooth in order to guarantee the demoulding, in the building mortion providing at the utility model, the detachable core rod that the core rod using is made for rigid material.For example, in the middle of, the wide dumbbell shaped part in narrow two ends, can make the core rod that two parts or three parts are spliced.
Smooth in order to guarantee the demoulding, in the building mortion providing at the utility model, the core rod using for high temperature can after-flame or the core rod made of the rigid material of decomposition.Such as organic materials such as vulcanies.
Those skilled in the art can know, and in the manufacturing process providing at the utility model in manufacturing process, described fluid media (medium) can be selected the material that great majority can be mobile, such as water, oil, organic solvent etc.Preferably adopt emulsion, because it has higher density and suitable mobility, and can not cause damage to forming tube.
In the manufacturing process providing at the utility model, forming pressure generally with reference to the material of tubing, the factors such as shape of the wall thickness of tubing, core rod determine, different according to the complexity of material and design of part, forming pressure is also different, generally be not less than 30-100Mpa, the high 200-1000Mpa that reaches.
Know-why of the present utility model has below been described in conjunction with specific embodiments.These are described is in order to explain principle of the present utility model, and can not be interpreted as by any way the restriction to the utility model protection domain.Explanation based on herein, those skilled in the art does not need to pay performing creative labour can associate other specific embodiment of the present utility model, within these modes all will fall into protection domain of the present utility model.
Claims (7)
1. the outer high-pressure liquid-filling building mortion of a tubing, it comprises: core rod, the reeded upper cavity in bottom, the reeded lower chamber in top, upper cavity or lower chamber have the fluid media (medium) injection channel that is communicated with its inner groovy, groove on upper cavity and lower chamber forms the cavity volume of a side sealing both ends open after its matched moulds, inscribed circle diameter >=the tube outer diameter in cross section, cavity volume both ends open place, the inscribed circle diameter in the cross section, inscribed circle diameter > cavity volume both ends open place of cavity volume inner section, at cavity volume both ends open place, be provided with the sealing ring of outer pipe wall and cavity volume sealing.
2. the outer high-pressure liquid-filling building mortion of a kind of tubing as claimed in claim 1, is characterized in that, the cross section of described groove is semicircle.
3. the outer high-pressure liquid-filling building mortion of a kind of tubing as claimed in claim 1, is characterized in that inscribed circle diameter=shaping pipe external diameter in cross section, described cavity volume both ends open place.
4. the outer high-pressure liquid-filling building mortion of a kind of tubing as claimed in claim 1, is characterized in that, it also comprises the lower bolster of fixing described lower chamber and for the cope match-plate pattern of fixing described upper cavity.
5. as any described outer high-pressure liquid-filling building mortion of a kind of tubing in claim 1,2,3,4, it is characterized in that, it also comprises propping up the left and right plug of fixing described core rod.
6. the outer high-pressure liquid-filling building mortion of a kind of tubing as claimed in claim 5, it is characterized in that, it also comprises a left side, right side is selected plate and is arranged on a described left side, plate left outer is selected on right side, right side pushes away cylinder, a described left side, right plug is arranged on a described left side, right side is selected the inner side of plate and is connected a described left side, right side pushes away cylinder, a described left side, right side pushes away on cylinder and is equipped with for controlling a left side, the hydraulic manifold block of right plug side-to-side movement and control are left, the displacement transducer of right plug displacement, on described cope match-plate pattern and lower bolster, also have corresponding draw-in groove, a described left side, the lower end fixed card that plate is selected on right side is combined in the draw-in groove on lower bolster.
As described in any one in claim 1,2,3,4,6 the outer high-pressure liquid-filling building mortion of a kind of tubing, it is characterized in that, described core rod is the detachable core rod that rigid material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320570723.6U CN203426231U (en) | 2013-09-13 | 2013-09-13 | External high-pressure hydroforming device for pipe material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320570723.6U CN203426231U (en) | 2013-09-13 | 2013-09-13 | External high-pressure hydroforming device for pipe material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203426231U true CN203426231U (en) | 2014-02-12 |
Family
ID=50055293
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320570723.6U Expired - Lifetime CN203426231U (en) | 2013-09-13 | 2013-09-13 | External high-pressure hydroforming device for pipe material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203426231U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464563A (en) * | 2013-09-13 | 2013-12-25 | 佛山市康思达液压机械有限公司 | External high-pressure liquid-filling forming device for pipe |
| CN105396929A (en) * | 2015-12-01 | 2016-03-16 | 保隆(安徽)汽车配件有限公司 | Multi-pipe hydraulic forming equipment |
-
2013
- 2013-09-13 CN CN201320570723.6U patent/CN203426231U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103464563A (en) * | 2013-09-13 | 2013-12-25 | 佛山市康思达液压机械有限公司 | External high-pressure liquid-filling forming device for pipe |
| CN103464563B (en) * | 2013-09-13 | 2016-04-27 | 佛山市康思达液压机械有限公司 | The outer high-pressure liquid-filling building mortion of a kind of tubing |
| CN105396929A (en) * | 2015-12-01 | 2016-03-16 | 保隆(安徽)汽车配件有限公司 | Multi-pipe hydraulic forming equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103464563B (en) | The outer high-pressure liquid-filling building mortion of a kind of tubing | |
| CN104438434B (en) | A kind of process of processing Y-shaped three-way | |
| CN106424293B (en) | A kind of hydraulic shock building mortion and manufacturing process for metal thin wall pipe | |
| CN204842971U (en) | Isobaric compacting tool set that floats of many loop type magnet blanks of a mould | |
| CN203842988U (en) | Hydraulic forming device with framework and rubber bag | |
| CN203426231U (en) | External high-pressure hydroforming device for pipe material | |
| CN107900241A (en) | The local bulging device of pipe fitting | |
| CN203457738U (en) | One-step molding die of artistic type tea cake | |
| CN202683796U (en) | Drawing die | |
| CN105234247A (en) | Hydraulic control tee joint buckling rigid-plastic compounded bulging forming die | |
| CN105346136A (en) | Axial pressurization liquid plastic isostatic pressing die | |
| CN207668263U (en) | It is a kind of at unicast hydraulic forming machine | |
| CN107639143A (en) | For patch mold forming method and equipment with internal cavity thin wall metalwork | |
| CN210705881U (en) | Progressive die sinking device for injection mold | |
| CN220946540U (en) | Medical accessory processing mould | |
| CN212634040U (en) | Safe type operation panel stamping die | |
| CN211562866U (en) | Double-pressure head one-step forming device for pyrophyllite liner pipe | |
| CN202655624U (en) | Mold frame structure for compression forming machine | |
| CN203610463U (en) | Water expansion device of die | |
| CN218111588U (en) | Medical hose mould | |
| CN211276242U (en) | But fixed stamping die of high-speed joint | |
| CN212168955U (en) | Inner diameter shaping mold structure of circular open type metal injection molding product | |
| CN206230005U (en) | A kind of split interchangeable motor case mould | |
| CN105234244A (en) | Hydraulic control tee joint rigid-plastic compounded bulging equipment | |
| CN105268811A (en) | Large-diameter T-branch pipe locking type rigid-plasticity combined bulging forming die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140212 |
|
| CX01 | Expiry of patent term |