CN220095415U - Mould and injection molding machine - Google Patents
Mould and injection molding machine Download PDFInfo
- Publication number
- CN220095415U CN220095415U CN202320985147.5U CN202320985147U CN220095415U CN 220095415 U CN220095415 U CN 220095415U CN 202320985147 U CN202320985147 U CN 202320985147U CN 220095415 U CN220095415 U CN 220095415U
- Authority
- CN
- China
- Prior art keywords
- positioning
- mold
- plastic product
- ejection
- parts
- 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
- 238000001746 injection moulding Methods 0.000 title claims abstract description 24
- 239000004033 plastic Substances 0.000 claims abstract description 102
- 230000000670 limiting effect Effects 0.000 claims abstract description 5
- 238000000465 moulding Methods 0.000 claims abstract description 4
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000000034 method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 230000001174 ascending effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000002991 molded plastic Substances 0.000 description 1
Landscapes
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses a die and an injection molding machine, and relates to the technical field of injection molding machines. The mold comprises a mold blank, an ejection part and a positioning part, wherein the mold blank is provided with a mold cavity for molding plastic products; the number of the ejection parts is multiple, the ejection parts are arranged on the die blank, and the ejection parts arranged on one side of the die blank can drive one side of the die blank to lift and eject the plastic product along the vertical direction; the number of the positioning parts is multiple, the positioning parts are circumferentially arranged among the ejection parts, the positioning parts can rise along the vertical direction, and the positioning parts are used for limiting the plastic products to the die blanks. The technical scheme of the utility model can solve the problems that the existing plastic products are easily damaged by the die cavity and the ejection part of the injection molding machine when being demolded, so that the plastic products are deformed and scrapped, and the quality of the plastic products is affected.
Description
Technical Field
The utility model relates to the technical field of injection molding machines, in particular to a mold and an injection molding machine.
Background
The injection molding machine is a tool for producing plastic products, and specifically comprises: and injecting the heated and melted plastic into a mold blank of an injection molding machine, and cooling and solidifying the plastic to obtain the plastic product.
When the injection molding machine in the prior art is used for demolding, one side of the mold blank and an ejection part close to the side are lifted upwards, so that the whole mold blank is obliquely arranged with the horizontal plane of the injection molding machine, and the plastic product can slide out of the mold blank due to the oblique arrangement of the mold blank. However, when the plastic product slides out of the mold blank, the partially incompletely cooled and solidified plastic product is easy to adhere to the inclined mold blank and the ejection part, so that the plastic product is easily damaged by pulling during demolding, and even the deformation and scrapping of the plastic product can be caused, thereby influencing the quality of the plastic product.
Disclosure of Invention
The utility model mainly aims to provide a die and an injection molding machine, and aims to solve the problems that the existing plastic products are easily damaged by the die cavity and the ejection part of the injection molding machine in a pulling way when the existing plastic products are demoulded, so that the plastic products are deformed and scrapped, and the quality of the plastic products is affected.
In order to achieve the above object, the present utility model provides a mold comprising:
the mold blank is provided with a mold cavity for molding the plastic product;
the ejection parts are arranged on the die blanks, and the ejection parts arranged on one side of the die blanks can drive one side of the die blanks to lift and eject the plastic products along the vertical direction;
the number of the positioning parts is multiple, the positioning parts are circumferentially arranged among the ejection parts, the positioning parts can ascend along the vertical direction, and the positioning parts are used for limiting the plastic products to the die blanks.
In an embodiment, the positioning portions and the ejection portions are alternately arranged along the circumferential direction of the mold blank.
In an embodiment, the mold blank is abutted against the ejection portion, so that the mold blank and the ejection portion are lifted synchronously.
In an embodiment, the mold further includes a mounting portion, the mold blank is disposed in the mounting portion, the plurality of ejection portions are disposed between the mounting portion and the mold blank and connected to the mounting portion, and the positioning portion is disposed in the mounting portion in a penetrating manner.
In an embodiment, the mounting portion is provided with a plurality of through holes along a vertical direction, and the positioning portion is disposed in the through holes.
In an embodiment, the ejection portion may be lifted up along a vertical direction, and a preset angle is formed between the lifted-up ejection portion and a surface of the mounting portion, so that the plastic product disposed on the mold blank is tilted, and the positioning piece may be used for positioning the plastic product that is close to one end of the mounting portion after being tilted, so that a relative position between the tilted plastic product and the mold blank is unchanged.
In an embodiment, the mold further includes a connecting portion integrally formed with the positioning portion, a distance is left between the positioning portion and the plastic product adjacent to the positioning portion, and the positioning portion and the connecting portion form a positioning piece; the connecting part is used for being connected with a driving device.
In an embodiment, the mould further comprises a driving part, the driving part comprises the driving device, the driving device is connected with the connecting piece, and the driving device can drive the positioning piece to ascend.
In an embodiment, at least one ejection portion is disposed on a peripheral side of the mold blank.
The utility model also provides an injection molding machine, which comprises the die.
According to the technical scheme, the plurality of ejection parts are arranged on the peripheral side of the die blank, the ejection parts are connected with the die blank, the ejection parts arranged on one side of the die blank can drive the side of the die blank to eject upwards, the ejection parts and the die blank form an inclined angle with a plane before ejection, further, the plastic product can slide out smoothly, the positioning parts are arranged along the circumferential direction of the ejection parts, the positioning parts and the ejection parts are alternately arranged, when the ejection parts and the die blank incline upwards, the positioning parts can also ascend, the inclined plastic product can be limited by the positioning parts, particularly, the lower end of the inclined plastic product can be contacted with the ascending positioning parts, the plastic product can be temporarily limited to the inclined angle and can not slide downwards, after the plastic product is completely cooled and solidified, the positioning parts can descend, the cooled and solidified plastic product can be demoulded, deformation and scrapped, the quality of the plastic product is improved, and meanwhile, the practicability of the injection molding machine is improved.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a mold according to an embodiment of the present utility model;
FIG. 2 is a schematic view of another embodiment of the mold of the present utility model, in which no mounting portion is mounted;
FIG. 3 is an enlarged schematic view of one embodiment of a positioning member in a mold according to the present utility model;
fig. 4 is a schematic structural view of the mold of the present utility model without the positioning member.
Reference numerals illustrate:
| reference numerals | Name of the name | Reference numerals | Name of the name |
| 1 | Mould | 20 | Positioning piece |
| 2 | Mould blank | 30 | Mounting part |
| 3 | Mold cavity | 210 | Positioning part |
| 10 | Ejector part | 220 | Connecting part |
| 230 | Plastic product | 210a | Through hole |
The achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that all the directional indicators in the embodiments of the present utility model are only used to explain the relative positional relationship, movement conditions, etc. between the components in a specific posture, and if the specific posture is changed, the directional indicators are correspondingly changed.
Furthermore, the description of "first," "second," etc. in this disclosure is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
When the injection molding machine in the prior art is used for demolding, one side of the mold blank and an ejection part close to the side are lifted upwards, so that the whole mold blank is obliquely arranged with the horizontal plane of the injection molding machine, and the plastic product can slide out of the mold blank due to the oblique arrangement of the mold blank. However, when the plastic product slides out of the mold blank, the partially incompletely cooled and solidified plastic product is easy to adhere to the inclined mold blank and the ejection part, so that the plastic product is easily damaged by pulling during demolding, and even the deformation and scrapping of the plastic product can be caused, thereby influencing the quality of the plastic product.
In order to solve the problems, the utility model provides a mold and an injection molding machine provided with the mold.
Referring to fig. 1 to 4, in the present embodiment, the mold 1 includes a mold blank 2, an ejection portion 10 and a positioning portion 210, wherein the mold blank 2 has a mold cavity 3 for molding a plastic product 230; the number of the ejection parts 10 is plural, the ejection parts 10 are disposed on the mold blank 2, and the ejection part 10 disposed on one side of the mold blank 2 can drive one side of the mold blank 2 to lift up and eject the plastic product 230 along the vertical direction; the number of the positioning portions 210 is plural, the positioning portions 210 are circumferentially disposed between the ejection portions 10, the positioning portions 210 can be lifted up along the vertical direction, and the positioning portions 210 are used for limiting the plastic product 230 to the mold blank 2.
Specifically, in the present utility model, by arranging the ejection portion 10 connected to the mold blank 2 on the mold 1 and arranging the positioning portion 210 capable of ascending, during the demolding process of the plastic product 230, the ejection portion 10 can drive the mold blank 2 to incline synchronously, specifically, a plurality of ejection portions 10 are arranged along the circumferential direction of the mold blank 2, the ejection portion 10 arranged on one side can eject upwards when the plastic product 230 is demolded, and drive the mold blank 2 arranged on the side to also ascend and eject, so that the molded plastic product 230 arranged on the mold blank 2 inclines, and at this time, the plastic product 230 can be demolded from the mold 1. However, in the actual production process, because the thickness of the plastic product 230 is different, the plastic product 230 is easy to have a part of the plastic product 230 which is not completely cooled and solidified after being molded, and an inclination angle is generated, the plastic product 230 is easy to be adhered to the inclined mold blank 2, so that the rib position inside the plastic product 230 is damaged, the deformation and scrapping of the plastic product 230 occur, and the quality of the plastic product 230 is affected, so that in the embodiment, the positioning part 210 is arranged in the circumferential direction of the ejection part 10, the positioning part 210 can be lifted up along the vertical direction, the lifted positioning part 210 can realize a limiting effect on the inclined plastic product 230, the plastic product 230 which is not completely cooled and solidified yet to be lowered can not continuously slide downwards due to the limitation of the positioning part 210, and after the plastic product 230 is completely cooled and solidified, the positioning part 210 is lowered down, so that the plastic product 230 can be smoothly demoulded. The positioning part 210 can be positioned in the process of ejecting the plastic product 230, so that the problem that the plastic product 230 is damaged and deformed due to the fact that the plastic product 230 is easily stuck on the mold blank 2 when not completely cooled and solidified is solved. And the positioning part 210 and the plastic product 230 are provided with a certain distance, so that poor appearance of the plastic product 230 is not caused, and the positioning part 210 can be contacted only when the plastic product 230 slides downwards, so that the shape and appearance of the plastic product 230 are not changed to the greatest extent. After the plastic product 230 is completely cooled and solidified, the plastic product 230 can be released from the mold blank 2 after passing through the lowered positioning portion 210, so as to realize the process of automatically taking out the plastic product 230.
In an embodiment, the positioning portions 210 and the ejection portions 10 are alternately arranged along the circumferential direction of the blank 2.
Specifically, the number of the positioning portions 210 is plural, the number of the ejection portions 10 is plural, the plurality of ejection portions 10 and the plurality of positioning portions 210 are all disposed along the circumferential direction of the mold blank 2, and two sides of each ejection portion 10 are provided with one positioning portion 210, that is, the positioning portions 210 and the ejection portions 10 are alternately disposed. The positioning portions 210 and the ejection portions 10 alternately arranged on the circumference of the mold blank 2 can realize that when the mold blank 2 and the ejection portions 10 incline along a plurality of directions, the positioning portions 210 can position the plastic product 230, for example, when the ejection portions 10 and the mold blank 2 incline to one end and eject, the positioning portions 210 arranged on opposite sides of the ejected mold blank 2 and ejection portions 10 can synchronously rise, so that the inclined plastic product 230 is prevented from sliding downwards from the low side, the integrity of the plastic product 230 is realized, the plastic product 230 is not damaged by pulling, and even the deformation and scrapping of the plastic product 230 are caused, so that the quality of the plastic product 230 is influenced.
In one embodiment, the mold 2 is abutted against the ejector 10, so that the mold 2 and the ejector 10 are raised synchronously.
Specifically, an abutment is provided between the mold base 2 and the ejector 10, the abutment enables the ejector 10 and the mold base 2 to be fastened and connected, and one abutment is provided between each ejector 10 and the mold base 2.
In an embodiment, the mold 1 further includes a mounting portion 30, the mold blank 2 is disposed in the mounting portion 30, the plurality of ejection portions 10 are disposed between the mounting portion 30 and the mold blank 2 and connected to the mounting portion 30, and the positioning portion 210 is disposed in the mounting portion 30 in a penetrating manner.
Specifically, the mold 1 of the injection molding machine further comprises a mounting portion 30, a cavity is formed in the mounting portion 30, the cavity can be used for the mold blank 2 and the ejection portion 10 to be arranged in the mounting portion 30, the mounting portion 30 is in contact connection with the ejection portion 10, a clamping position used for being connected with a push rod is further arranged on the ejection portion 10, and after the push rod is located in the ejection portion 10 through clamping connection, the push rod can vertically upwards eject the ejection portion 10. And one end of the ejector rod is arranged on the clamping position of the ejection part 10, and the other end of the ejector rod is arranged on the driving device, and the driving device can drive the ejector rod to ascend along the vertical direction, so that the ejection part 10 and the die cavity 3 are driven to ascend.
In an embodiment, the mounting portion 30 is provided with a plurality of through holes 210a along a vertical direction, and the positioning portion 210 is disposed in the through holes 210 a.
Specifically, through holes 210a are disposed on two sides of the mounting portion 30 near the ejection portion 10, and the number of through holes 210a is plural, the through holes 210a are used for the positioning portion 210 to penetrate out, and one end of the positioning portion 210 is disposed on the mounting portion 30 through the through holes 210a and is movably connected to the mounting portion 30. The positioning portion 210 can rise, and the rising positioning portion 210 can provide positioning protection for the plastic product 230.
In an embodiment, the ejection portion 10 may be lifted up along a vertical direction, and the lifted-up ejection portion 10 forms a preset angle with the surface of the mounting portion 30, so that the plastic product 230 disposed on the mold blank 2 is tilted, and the positioning member 20 may be configured to position the plastic product 230 that is tilted and then approaches to one end of the mounting portion 30, so that the relative position between the tilted plastic product 230 and the mold blank 2 is unchanged.
Specifically, when the ejector rod does not eject the ejector 10, the ejector 10 and the mounting part 30 are on the same plane, and when the ejector rod lifts the ejector 10, the ejector rod is one end of the ejector 10, one end of the ejector 10 is ejected by the ejector rod, the other end of the ejector 10 is not ejected by the ejector rod, so that an included angle is formed between the ejected part 10 with one end being ejected and the mounting part 30, the included angle can be a preset angle, the ejector 10 drives the mold blank 2 to incline synchronously to form a preset angle with the mounting part 30, so that the plastic product 230 arranged on the mold blank 2 can slide out of the mold blank 2 from the one end which is not ejected, but because the plastic product 230 is not cooled and fixed at this time, part of the plastic product 230 is easy to adhere to the mold blank 2, the plastic product 230 which is adhered to the mold blank 2 is pulled, the quality of the plastic product 230 cannot be ensured, and the manufacturing of the plastic product 230 is poor. The positioning portion 210 can be ejected from the through hole 210a at this time, the positioning portion 210 of the through hole 210a is a positioning portion 210 near the side of the ejecting portion 10 that is not ejected, the positioning portion 210 rises to clamp the plastic product 230 that is not cooled and fixed to be slid down, after the plastic product 230 is molded and is cooled and fixed, the positioning portion 210 descends to return to the initial state that is not ejected, and at this time, the plastic product 230 can be released from the mold blank 2.
In an embodiment, the mold 1 further includes a connecting portion 220 integrally formed with the positioning portion 210, a distance is left between the positioning portion 210 and the plastic product 230 adjacent to the positioning portion 210, and the positioning portion 210 and the connecting portion 220 form a positioning member 20; the connection portion 220 is for connection with a driving device.
In particular, the method comprises the steps of,
in an embodiment, the mold 1 further comprises a driving part, the driving part comprises the driving device, the driving device is connected with the connecting piece, and the driving device can drive the positioning piece 20 to ascend.
In particular, the method comprises the steps of,
in one embodiment, at least one ejection portion 10 is disposed on the peripheral side of the preform 2.
Specifically, the mold blank 2 at least includes four directions of up, down, left and right, and at least one ejection portion 10 should be disposed in the four directions of up, down, left and right of the mold blank 2, so as to cope with the upward ejection of the mold blank 2 in different directions. In the utility model, the positioning part 210 and the connecting piece are integrally formed, the connecting piece can be connected with the driving device, the positioning part 210 and the connecting piece are combined into the positioning piece 20, and the positioning piece 20 can be ejected upwards by driving the driving device.
The utility model also proposes an injection molding machine comprising a mold 1 as described above.
Because the injection molding machine adopts all the technical schemes of all the embodiments, the injection molding machine has at least all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted here.
In an embodiment, a plurality of ejection portions 10 are disposed at the peripheral side of the mold blank 2, and the ejection portions 10 are connected with the mold blank 2, so that the ejection portion 10 disposed at one side of the mold blank 2 can drive the side of the mold blank 2 to eject upwards, so that the ejection portion 10 and the mold blank 2 form an inclined angle with a plane before ejection, and further the plastic product 230 can slide out smoothly, and positioning portions 210 are disposed, the positioning portions 210 are disposed along the circumferential direction of the ejection portion 10, and the positioning portions 210 and the ejection portions 10 are alternately disposed, when the ejection portion 10 and the mold blank 2 tilt upwards, the positioning portions 210 can also rise, so that the inclined plastic product 230 can be limited by the positioning portions 210, specifically, one end of the inclined plastic product 230 with lower side can be in contact with the rising positioning portion 210, so that the plastic product 230 can be temporarily limited to the inclined angle without sliding downwards, after the plastic product 230 is completely cooled and solidified, the positioning portions 210 can be lowered, so that the cooled and solidified plastic product 230 can be demolded, thereby not cause deformation of the plastic product 230, and the injection molding machine itself is also practical.
The foregoing description is only of the preferred embodiments of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structural changes made by the specification and drawings of the present utility model or direct/indirect application in other related technical fields are included in the scope of the present utility model.
Claims (10)
1. A mold, comprising:
the mold blank is provided with a mold cavity for molding the plastic product;
the ejection parts are arranged on the die blanks, and the ejection parts arranged on one side of the die blanks can drive one side of the die blanks to lift and eject the plastic products along the vertical direction;
the number of the positioning parts is multiple, the positioning parts are circumferentially arranged among the ejection parts, the positioning parts can ascend along the vertical direction, and the positioning parts are used for limiting the plastic products to the die blanks.
2. The mold of claim 1, wherein a plurality of the positioning portions and a plurality of the ejection portions are alternately arranged in a circumferential direction of the preform.
3. The mold of claim 2, wherein the preform is in contact with the ejector portion to raise the preform in synchronization with the ejector portion.
4. The mold of claim 1, further comprising a mounting portion, wherein the preform is disposed in the mounting portion, wherein the plurality of ejector portions are disposed between and connected to the mounting portion, and wherein the positioning portion is disposed in the mounting portion.
5. The mold according to claim 4, wherein the mounting portion is provided with a plurality of through holes in a vertical direction, and the positioning portion is provided in the through holes.
6. The mold of claim 5, wherein the ejector portion is capable of being lifted in a vertical direction, and a predetermined angle is formed between the lifted ejector portion and a surface of the mounting portion, so that the plastic product disposed on the mold blank is tilted, and the positioning portion is capable of positioning the plastic product which is tilted and is close to one end of the mounting portion, so that a relative position between the tilted plastic product and the mold blank is unchanged.
7. The mold of claim 1, further comprising a connecting portion integrally formed with the positioning portion, wherein a distance is left between the positioning portion and the plastic product adjacent to the positioning portion, and wherein the positioning portion and the connecting portion form a positioning member; the connecting part is used for being connected with a driving device.
8. The mold of claim 7, further comprising a drive member comprising the drive device, the drive device being coupled to the connector, the drive device being capable of driving the positioning member up.
9. The mold according to claim 1, wherein at least one of the ejector portions is provided on a peripheral side of the preform.
10. An injection molding machine, comprising: a mould as claimed in any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320985147.5U CN220095415U (en) | 2023-04-23 | 2023-04-23 | Mould and injection molding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320985147.5U CN220095415U (en) | 2023-04-23 | 2023-04-23 | Mould and injection molding machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220095415U true CN220095415U (en) | 2023-11-28 |
Family
ID=88870008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320985147.5U Active CN220095415U (en) | 2023-04-23 | 2023-04-23 | Mould and injection molding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220095415U (en) |
-
2023
- 2023-04-23 CN CN202320985147.5U patent/CN220095415U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110549568A (en) | Take demoulding mechanism of back-off product | |
| CN220095415U (en) | Mould and injection molding machine | |
| CN216267418U (en) | Injection mold of atomizing casing | |
| CN210651692U (en) | Vacuum injection mold | |
| CN212147408U (en) | Injection mold of V type thin wall injection molding | |
| CN211334417U (en) | Demoulding mechanism for automobile grille production mould | |
| CN210283115U (en) | Linkage type demolding device and mold equipment | |
| CN209257380U (en) | It is a kind of for manufacturing the mold of sound box for vehicle cover board | |
| CN216635252U (en) | Forced demoulding structure of injection mould | |
| CN219505420U (en) | Plastic suction mould system convenient to drawing of patterns | |
| CN214448151U (en) | High-efficiency die | |
| CN219486470U (en) | Double ejection mechanism | |
| CN219114708U (en) | Ejection device after injection molding | |
| CN220073244U (en) | Mould that possesses drawing of patterns safeguard function | |
| CN219789161U (en) | Rear mold ejection demolding mold | |
| CN215040225U (en) | A setting device for car plastics headrest | |
| CN217803109U (en) | Novel material lifting device | |
| CN220261901U (en) | Injection mold for plastic products | |
| CN219727075U (en) | Mold secondary ejection structure | |
| CN216359741U (en) | Injection mold with taper pin structure | |
| CN219600287U (en) | Stripping device for panel products | |
| CN112659480B (en) | Secondary compression mould of mobile phone rear cover belt crater | |
| CN221212603U (en) | Core pulling structure in plastic mold | |
| CN215396670U (en) | Injection mold for injection molding tool rest groove pressing | |
| CN220638705U (en) | Forming die of automotive foaming interior spare |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |