CN104942973B - A kind of refractory material hydraulic forming machine and its one-step moulding method of pressurizeing up and down - Google Patents
A kind of refractory material hydraulic forming machine and its one-step moulding method of pressurizeing up and down Download PDFInfo
- Publication number
- CN104942973B CN104942973B CN201510358748.3A CN201510358748A CN104942973B CN 104942973 B CN104942973 B CN 104942973B CN 201510358748 A CN201510358748 A CN 201510358748A CN 104942973 B CN104942973 B CN 104942973B
- Authority
- CN
- China
- Prior art keywords
- refractory material
- forming machine
- hydraulic forming
- mold cavity
- mould
- 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.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/02—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form
- B28B3/08—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form with two or more rams per mould
- B28B3/086—The rams working in different directions
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The present invention provides a kind of refractory material hydraulic forming machine that pressurizes up and down, and upper mould is promoted by upper cylinder, and mould realizes the bidirectional pressed moulding to refractory material under lower oil cylinder pushing；Present invention also offers a kind of band shell refractory material one-step moulding method using above-mentioned refractory material hydraulic forming machine, comprise the following steps：Metal shell is placed in the mold cavity of refractory material hydraulic forming machine；Upper charging set is covered on mold cavity by connector；Raw material is put into mold cavity, the refractory material hydraulic forming machine that pressurizes up and down is run；Product is taken out after the demoulding.Band shell refractory material one-step moulding method of the invention, band shell refractory material production shaping operation length is simplified, the generation of artificial input and artificial mass defect is reduced, the use of refractory clay is eliminated, efficiency is being improved, the quality of product is being ensure that while cost-effective.
Description
Technical field
The present invention relates to refractory material technology field, especially one kind is with shell refractory material disposal molding method and its sets
It is standby.
Background technology
As shown in figure 1, needing to cover one outside refractory material when the refractory materials such as sewage outlet brick for steelmaking are produced
Metal shell, existing process method is：Metal shell, lower nozzle brick, refractory wass are prepared respectively, manually outside lower nozzle brick
Wall puts metal shell after smearing refractory wass, and strict control metal shell behind the position of lower nozzle brick relative to going to drying
Refractory wass is dried in room.
This process is pure artificial operation, and labour intensity is big, and the Full Ratio of refractory wass receives operating personnel's
Factor influences, and error is larger.Additionally, also needing to set special baking operation in technique, workload and activity time are increased,
Production efficiency is relatively low.
The content of the invention
The present invention provides a kind of band shell refractory material disposal molding machine and its one-step moulding method, technology to be solved
Problem is when band shell refractory material is molded, by the outside of metal shell disposal molding to fire resistive material product, so as to simplify
Technological process, reduction human input, stabilized product quality.
In order to solve the above technical problems, the present invention provides a kind of refractory material hydraulic forming machine that pressurizes up and down, including base,
Four root posts of base corner are fixedly connected on, back timber at the top of column are fixedly connected on and are fixedly installed on the upper of back timber center
Oil cylinder, is fixedly installed lower oil cylinder on the base, the upper end of lower oil cylinder is connected with lower moved cross beam, lower moved cross beam corner
It is set in the bottom of column and can be moved up and down along column under the promotion of lower oil cylinder；In being fixedly installed in the middle part of the column
Between beam, the center of intermediate beam is fixedly installed funnel shaped mold cavity；The lower end of the upper cylinder is fixedly installed activity
Crossbeam, the corner of the upper moved cross beam is set in the top of column, and upper moved cross beam can be along column under the driving of upper cylinder
Move up and down, upper moved cross beam middle part is fixedly installed mould.Thus, in use, it is possible to achieve upper and lower mould is to grinding tool
Pressurizeed while material in chamber, so that effectively ensure to realize two-way compacting, so as to significantly reduce product along height side
To density variation.
Preferably, the center of the lower moved cross beam upper surface is fixedly installed cushion block, and cushion block connects handle with lower mould pressure-bearing
Be fixedly connected, the top that lower mould pressure-bearing connects handle is fixedly installed lower mould, the cushion block, lower mould pressure-bearing connect handle and lower mould be it is hollow
Cylinder type；The center of lower moved cross beam is provided through core pulling oil cylinder up and down, and piston, piston are arranged with core pulling oil cylinder
Piston rod top stationary core rod, piston rod and plug are through the cushion block and lower mould pressure-bearing connects handle and lower mould extends upwardly to mould
Tool chamber upper surface.So as to automatic core-pulling can be realized when production is free product, automation mechanized operation is realized, reduced labor intensity,
Improve production efficiency.
Preferably, during the upper mould, mold cavity, cushion block, plug, core pulling oil cylinder, lower mould, lower mould pressure-bearing connect handle and piston
Heart axle is on same straight line so that the power under working condition can also be acted on point-blank, so as to avoid equipment fortune
The loss of energy during row.
Preferably, the outer diameter length of plug is identical with the interior electrical path length of lower mould, in the case where ensureing that plug can be passed through freely
Avoid material by being dropped out in the space between lower mould and plug while mould, cause the waste of material and the pollution of equipment, and
When lower mould pressurizes to material so that the inside and outside uniform force of material, and then cause the diametrically opposite even density of product.
Preferably, the height sum of plug and piston less than core pulling oil cylinder and lower mould pressure-bearing connect handle and cushion block height it
With so that plug can be fully retracted to pressure-bearing and connect in handle.
Preferably, the height of plug is more than the height of mold cavity, and plug is independent of one another with mold cavity so that in forming process
Plug with free movement, and can guarantee that the patency of the centre bore of the product with holes produced.
Preferably, the hydraulic forming machine also include can matched metal shell and upper charging set so that real
Now with the one-shot forming of shell refractory material.
The beneficial effect of hydraulic forming machine of the present invention is：Hydraulic forming machine uses many beam multi-post structures forms, up and down
Both direction all turns into main pressing direction；The use of oil cylinder, realizes two-way compacting in the middle of coordinating, and can realize product height side
It is minimum to density variation；Automatic core-pulling can be realized；Can Automated condtrol reduce labor intensity；Can digital displacement control,
Realize that product size is unanimously required；Servo power control can be matched, green energy conservation is realized.
Present invention also offers a kind of band shell refractory material one-shot forming side using above-mentioned refractory material hydraulic forming machine
Method, comprises the following steps：
Step 1, metal shell is placed in the mold cavity of refractory material hydraulic forming machine；
Step 2, upper charging set is covered on mold cavity by connector；
Step 3, raw material is put into mold cavity, runs the refractory material hydraulic forming machine that pressurizes up and down；
Step 4, takes out product after the demoulding.
Further, the product of gained no longer needs drying and processing in step 4 so that technique is simpler easily operated, raw
Produce in hgher efficiency.
Further, the outer surface of the box hat is adapted with the inner surface of mold cavity, and mold cavity lower internal diameter is less than gold
Category shell lower internal diameter；Upper charging set internal diameter less than metal shell upper internal diameter, so as to being fixed on steadily by metal shell
In mold cavity, it is to avoid the movement of metal shell in pressure process.
Band shell refractory material one-step moulding method of the invention, simplifies band shell refractory material production shaping operation length,
The generation of artificial input and artificial mass defect is reduced, the use of refractory clay is eliminated, efficiency is being submitted to, it is cost-effective
The quality of product is ensure that simultaneously.
Brief description of the drawings
Fig. 1 is the existing assembling schematic diagram with shell refractory material；
Fig. 2 is the assembling schematic diagram of one-time formed refractory material in the present invention；
Fig. 3 is the schematic diagram of the refractory material hydraulic forming machine that pressurizes up and down of the invention；
Fig. 4 is the enlarged schematic partial view of the refractory material hydraulic forming machine that pressurizes up and down of the invention.
Specific embodiment
Principle of the invention and feature are described below in conjunction with accompanying drawing, example is served only for explaining the present invention, and
It is non-for limiting the scope of the present invention.
As shown in Figure 3 and Figure 4, the utility model provides a kind of refractory material hydraulic forming machine that pressurizes up and down, including bottom
Seat 13, is fixedly connected on four root posts 14 of base corner, is fixedly connected on the back timber 15 at the top of column 14 and is fixedly installed on
The upper cylinder 16 in back timber center, is fixedly installed lower oil cylinder 12, the upper end of lower oil cylinder 12 and lower moved cross beam 5 on the base 13
It is connected, 5 four jiaos of lower moved cross beam is set in the bottom of column 14 and can be moved up and down along column under the promotion of lower oil cylinder 12；
Intermediate beam 4 is fixedly installed in the middle part of the column, the center of intermediate beam 4 is fixedly installed funnel shaped mold cavity 3；It is described
The lower end of upper cylinder 16 is fixedly installed moved cross beam 2, and the corner of the upper moved cross beam is set in the top of column 14, on
Moved cross beam 2 can move up and down under the driving of upper cylinder 16 along column, and the middle part of upper moved cross beam 2 is fixedly installed mould 1.By
This, in use, it is possible to achieve upper and lower mould while material in mold cavity to pressurizeing, so as to effectively ensure to realize double
To compacting, so as to significantly reduce density variation of the product along short transverse.
Wherein, the center of the lower upper surface of moved cross beam 5 is fixedly installed cushion block 6, and cushion block 6 connects handle 10 and consolidates with lower mould pressure-bearing
Fixed connection, the top that lower mould pressure-bearing connects handle 10 is fixedly installed lower mould 9, and the cushion block 6, lower mould pressure-bearing connect handle 10 and lower mould 9 is equal
It is hollow cylinder type；The center of lower moved cross beam is provided through core pulling oil cylinder 8 up and down, and work is arranged with core pulling oil cylinder
Plug 11, the top stationary core rod 7 of piston rod 111 of piston, piston rod 111 and plug 7 connect handle through the cushion block 6 and lower mould pressure-bearing
10 and lower mould 9 extend upwardly to the upper surface of mold cavity 3.So as to automatic core-pulling can be realized when production is free product, realize certainly
Dynamicization is operated, and is reduced labor intensity, improve production efficiency.The upper mould 1, mold cavity 3, cushion block 6, plug 7, core pulling oil cylinder 8, under
Mould 9, lower mould pressure-bearing connect the central shaft of handle 10 and piston 11 on same straight line so that the power under working condition can also be acted on
Point-blank, so as to avoid the loss of energy in equipment running process.The internal diameter of the outer diameter length of plug 7 and lower mould 9
Length is identical, avoids material from being declined by the space in the middle of lower mould and plug while ensureing that plug freely can pass through lower mould
Go out, cause the waste of material and the pollution of equipment, and when lower mould pressurizes to material so that the inside and outside uniform force of material,
And then cause the diametrically opposite even density of product.Plug 7 holds less than core pulling oil cylinder 8 with the height sum of piston 11 with lower mould
The height sum of crimping handle 10 and cushion block 6 so that plug 7 can be fully retracted to pressure-bearing and connect in handle 10, and the height of plug 7 is more than
The height of mold cavity 3, plug 7 is independent of one another with mold cavity 3 so that plug 7 with free movement, and can guarantee that in forming process
The patency of the centre bore of the product with holes produced.The hydraulic forming machine also includes can matched metal shell
32 and it is upper charging set 34, so as to realize being integrally formed with shell refractory material.
As shown in Fig. 2 present invention also offers a kind of band shell refractory material using above-mentioned refractory material hydraulic forming machine
One-step moulding method, comprises the following steps：
Step 1, metal shell 32 is pre-placed in the mold cavity 3 of refractory material hydraulic forming machine；
Step 2, upper charging set is covered on mold cavity 3；
Step 3, raw material is put into mold cavity 3, runs the refractory material hydraulic forming machine that pressurizes up and down；
Step 4, takes out product after the demoulding.
Further, the product of gained no longer needs drying and processing in step 4.
Further, the outer surface of the metal shell is adapted with the inner surface of mold cavity 3, the lower internal diameter of mold cavity 3
Less than the lower internal diameter of metal shell 32；34 internal diameters of upper charging set are less than the upper internal diameter of metal shell 32, so that preferably by gold
Category shell is fixed in mold cavity, it is to avoid the movement of metal shell in equipment running process.
Before equipment starts, upper mould 1 is in extreme higher position, and the piston 11 of core pulling oil cylinder 8 drives plug 7 to reach and mold cavity
The concordant feed location in 3 upper surfaces, oil cylinder 12 drives lower mould 9 to return to the lower limit charging position of mold cavity 3.Box hat 32 is put into mould
Charging in tool chamber and by being fixedly connected on the upper end of mold cavity 3 covers 34 and is fixed.After starting auto-programming, upper mould 1 is in master
Cylinder is pressed down to the upper mould predeterminated position in mold cavity 3 automatically under promoting, upper mould predeterminated position is located at shaping end position top 0-
10mm；Oil cylinder 12 promotes lower mould 9 to rise to lower mould predeterminated position, and lower mould predeterminated position is located at shaping end position lower section 0-
20mm；Upper mould 1, lower mould 9 simultaneously move toward one another to respective setting position, it is achieved thereby that two-way compacting.At the same time core pulling
The piston 11 of cylinder 8 is because plug 7 is generated certain contractile motion by the press power effect of upper mould 1；Lower mould 9 is relative to plug 7
Corresponding distance is moved up, so as to furthermore achieved that two-way compacting.After the completion of compacting, upper mould 1 rises to upper limit position；
Oil cylinder 12 promotes lower mould 9 and core pulling oil cylinder 8 and product to move upwardly together 0-20mm, it is therefore an objective to which product is first pushed up into one
Under, product external diameter is reduced enclasping force of the product to plug after departing from mould inner cavity surface；The piston 11 of core pulling oil cylinder 8 drives
Plug 7 is moved downward, so as to plug 7 be fully drawn out from product；Oil cylinder 12 promotes lower mould 9 and product until it is higher by mould
The upper surface (i.e. demoulding end position) in chamber 3；Manually take product away；Lower mould 9 drops to lower limit charging under the drive of oil cylinder 12
Position；Core pulling cylinder 8 stretches out piston rod 11 and plug 7 is released into the charging position concordant with mold cavity 3.So far, fire proofed wood feed liquid
Each part of pressing machine returns to initial position, and obtains one-time formed band shell refractory material.
Band shell refractory material one-step moulding method of the invention, simplifies band shell refractory material production shaping operation length,
The generation of artificial input and artificial mass defect is reduced, the use of refractory clay is eliminated, efficiency is being submitted to, it is cost-effective
The quality of product is ensure that simultaneously.
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all it is of the invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included within the scope of the present invention.
Claims (9)
1. one kind is pressurizeed refractory material hydraulic forming machine, including base up and down（13）, it is fixedly connected on four of base corner and stands
Post（14）, it is fixedly connected on column（14）The back timber at top（15）With the upper cylinder for being fixedly installed on back timber center（16）, it is special
Levy and be,
The base（13）On be fixedly installed lower oil cylinder（12）, lower oil cylinder（12）Upper end and lower moved cross beam（5）It is connected,
Lower moved cross beam（5）Corner is set in the bottom of column and can be in lower oil cylinder（12）Promotion under along column move up and down；
Intermediate beam is fixedly installed in the middle part of the column（4）, intermediate beam（4）Center be fixedly installed funnel shaped mould
Chamber（3）；
The upper cylinder（16）Lower end be fixedly installed moved cross beam（2）, the upper moved cross beam（2）Corner be set in
The top of column, upper moved cross beam（2）Can be moved up and down along column under the driving of upper cylinder, upper moved cross beam（2）Middle part is consolidated
Surely it is provided with mould（1）；The lower moved cross beam（5）The center of upper surface is fixedly installed cushion block（6）, cushion block（6）With under
Mould pressure-bearing connects handle（10）It is fixedly connected, lower mould pressure-bearing connects handle（10）Top be fixedly installed lower mould（9）, the cushion block（6）, under
Mould pressure-bearing connects handle（10）With lower mould（9）It is hollow cylinder type;Lower moved cross beam（5）Center be provided through up and down
Core pulling oil cylinder（8）, core pulling oil cylinder（8）Inside it is arranged with piston（11）, piston（11）Piston rod（111）Top stationary core rod（7）,
Piston rod（111）And plug（7）Through the cushion block（6）Handle is connect with lower mould pressure-bearing（10）And lower mould（9）Extend upwardly to mould
Chamber upper surface.
2. a kind of refractory material hydraulic forming machine that pressurizes up and down according to claim 1, it is characterised in that the upper mould (1),
Mold cavity（3）, cushion block（6）, plug（7）, core pulling oil cylinder（8）, lower mould（9）, lower mould pressure-bearing connect handle（10）And piston（11）In
Heart axle is on same straight line.
3. a kind of refractory material hydraulic forming machine that pressurizes up and down according to claim 1, it is characterised in that plug（7）It is outer
Electrical path length and lower mould（9）Internal diameter equal length.
4. a kind of refractory material hydraulic forming machine that pressurizes up and down according to claim 1, it is characterised in that plug（7）With work
Plug（11）Height sum be less than core pulling oil cylinder（8）Handle is connect with lower mould pressure-bearing（10）And cushion block（6）Height sum.
5. a kind of refractory material hydraulic forming machine that pressurizes up and down according to claim 1, it is characterised in that plug（7）Height
Degree is more than mold cavity（3）Height, plug（7）With mold cavity（3）Independently of one another.
6. a kind of refractory material hydraulic forming machine that pressurizes up and down according to claim 1, it is characterised in that one kind is pressurizeed up and down
Refractory material hydraulic forming machine also includes can matched metal shell（32）With upper charging set（34）.
7. it is a kind of with shell refractory material one-step moulding method, it is characterised in that the band shell refractory material one-step moulding method makes
With the refractory material hydraulic forming machine as described in claim 1-6 is any, comprise the following steps：
Step 1, by metal shell（32）It is placed on the mold cavity of refractory material hydraulic forming machine（3）It is interior；
Step 2, upper charging is covered（34）Cover mold cavity（3）On;
Step 3, mold cavity is put into by raw material（3）It is interior, operation pressure refractory material hydraulic forming machine；
Step 4, takes out product after the demoulding.
8. it is according to claim 7 with shell refractory material one-step moulding method, it is characterised in that the system of gained in step 4
Product do not need drying and processing.
9. the band shell refractory material one-step moulding method according to claim 7 or 8, it is characterised in that the metal shell
Outer surface and mold cavity（3）Inner surface be adapted, mold cavity（3）Lower internal diameter is less than metal shell（32）Lower internal diameter；
Upper charging set（34）Internal diameter is less than metal shell（32）Upper internal diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510358748.3A CN104942973B (en) | 2015-06-25 | 2015-06-25 | A kind of refractory material hydraulic forming machine and its one-step moulding method of pressurizeing up and down |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510358748.3A CN104942973B (en) | 2015-06-25 | 2015-06-25 | A kind of refractory material hydraulic forming machine and its one-step moulding method of pressurizeing up and down |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104942973A CN104942973A (en) | 2015-09-30 |
| CN104942973B true CN104942973B (en) | 2017-05-31 |
Family
ID=54158295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510358748.3A Active CN104942973B (en) | 2015-06-25 | 2015-06-25 | A kind of refractory material hydraulic forming machine and its one-step moulding method of pressurizeing up and down |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104942973B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105171903B (en) * | 2015-10-26 | 2018-06-26 | 田东方 | The manufacturing equipment and manufacturing method of powder compacting |
| CN111823633B (en) * | 2020-07-26 | 2022-04-01 | 广东绿富域资源再生科技有限公司 | Domestic garbage incinerator slag brick making mold mechanism and control method |
| CN115319892B (en) * | 2022-09-09 | 2024-06-18 | 洛阳戴梦特智能装备制造有限公司 | Bi-directional pressurizing refractory brick forming press |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1311941C (en) * | 2005-09-30 | 2007-04-25 | 翟立猛 | Method for quick changing bottom inlet of intermediate ladle |
| CN201483628U (en) * | 2009-06-25 | 2010-05-26 | 鞍钢集团耐火材料公司 | Frication brick press nozzle brick floating and shaping die |
| CN202344652U (en) * | 2011-11-10 | 2012-07-25 | 南通皋液液压机有限公司 | Bi-directional hydraulic press special for ceramic bearing |
| CN104175389A (en) * | 2014-07-29 | 2014-12-03 | 浙江立鑫高温耐火材料有限公司 | Manufacturing process for die-casting saggars with refractory materials |
| CN204354258U (en) * | 2014-12-18 | 2015-05-27 | 河南竹林耐材有限公司 | The shaped device of small-bore upper nozzle brick |
| CN204748874U (en) * | 2015-06-25 | 2015-11-11 | 淄博澳亨液压机械有限公司 | Refractory material hydraulic forming machine pressurizes from top to bottom |
-
2015
- 2015-06-25 CN CN201510358748.3A patent/CN104942973B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104942973A (en) | 2015-09-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105835210B (en) | A kind of mould and its drawing method for suppressing gypsum hollow brick | |
| CN104942973B (en) | A kind of refractory material hydraulic forming machine and its one-step moulding method of pressurizeing up and down | |
| CN206690597U (en) | A kind of simple floating die structure that can realize two-way compacting and automatic demoulding | |
| CN102554628A (en) | Casting-forging hydropress and method for casting and forging product thereof | |
| CN207465460U (en) | Multifunctional molding brickmaking machine | |
| CN106723243A (en) | Sweet cake filling is molded baking machine | |
| CN205704593U (en) | A kind of mould suppressing gypsum hollow brick | |
| CN203266881U (en) | Building block mold | |
| CN202656277U (en) | Dried bag type isostatic pressing machine | |
| CN203901502U (en) | Energy-saving ejector for hydraulic refractory brick forming machine | |
| CN202461967U (en) | Casting and forging hydraulic machine | |
| CN204897885U (en) | Numerical control intelligence machine of buckling | |
| CN203751279U (en) | Horizontal parting type removable flask molding machine with compact structure and smooth movement | |
| CN103831408B (en) | Horizontal parting removable flask molding machine | |
| CN215786745U (en) | Powder metallurgy continuous extrusion device | |
| CN214601802U (en) | Four-station molding machine | |
| CN207170669U (en) | A kind of USB3.1Type C shell forming machines | |
| CN213061540U (en) | Vibrating diaphragm hot briquetting device | |
| CN103264118A (en) | Nut blank forming device and nut blank forming method | |
| CN211407456U (en) | Colorful cake production water line | |
| CN211161795U (en) | High-speed sand mold horizontal molding machine | |
| CN207997393U (en) | A kind of ceramic powder moulding press | |
| CN203044815U (en) | Full-automatic casting core-making mold | |
| CN106690387A (en) | Cookie-stuffing forming machine with feeding device | |
| CN209440773U (en) | A kind of hot pressing die of noise reduction synthetic material friction block |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |