CN215158644U - Automatic feeding device - Google Patents
Automatic feeding device Download PDFInfo
- Publication number
- CN215158644U CN215158644U CN202120335985.9U CN202120335985U CN215158644U CN 215158644 U CN215158644 U CN 215158644U CN 202120335985 U CN202120335985 U CN 202120335985U CN 215158644 U CN215158644 U CN 215158644U
- Authority
- CN
- China
- Prior art keywords
- plate
- clamping
- drainage
- guide
- cylinder
- 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
Images
Landscapes
- Specific Conveyance Elements (AREA)
Abstract
The utility model provides an automatic feeding device, including the frame, set up the feed mechanism of mutually supporting in the frame and push away the material and lead the mechanism of dialling, a clamping mechanism for fixing the memory strip connector, feed mechanism includes two material loading subassemblies, every material loading subassembly includes the drainage way, is used for saying matched with feed bin, drive assembly with the drainage, pushes away the material and leads the mechanism of dialling and includes support, lateral shifting mechanism, longitudinal movement mechanism, lead and dial the mechanism, and clamping mechanism is including the first clamping component and the second clamping component of mutually supporting. The utility model has simple structure and strong practicability, can realize the actions of guiding, storing, clamping and the like of the memory strip connector, and ensures the working efficiency through different storage bins; the automatic drainage of the memory board can be realized through the drainage plate with the arc-shaped structure, and the feeding of the memory strip connector can be realized through the guide groove; the memory bank connector is pushed into the guiding and dialing slot by using the cylinder, and then the memory bank connector is pushed to the socket process by using the pushing and dialing guiding mechanism.
Description
Technical Field
The utility model belongs to the technical field of memory strip connector processing equipment technique and specifically relates to an automatic feeding.
Background
The memory bank connector is an important component of a computer, and in the computer, the memory bank connector is inserted into a memory bank connector slot of a mainboard and is a channel for connecting a central processing unit and other equipment, so that the memory bank connector plays roles of buffering and data exchange.
In the existing memory bank connector feeding and assembling production line, the memory bank connector is usually manually placed in a feeding groove, but the production efficiency of the memory bank connector assembling production line is low through a manual feeding and assembling mode, and manpower is wasted.
DDR 4(TH or SMT) products are assembled automatically in a fast speed cycle within 1.6s, and traditional plastic material loading quantity is very limited, and there is a waiting stop, so that the staff at the station can not leave the station for a long time to do other things such as material changing and material pouring.
Patent CN211361241U a memory bank connector gripper and memory bank connector material loading assembly line, discloses the following content, the memory bank connector gripper is used for making the memory bank connector card in the memory bank connector draw-in groove of mainboard, be provided with two chucks that press from both sides tight memory bank connector on the mainboard, the memory bank connector gripper includes: a base having a connection end for connection with a robot; the clamp opening mechanism is connected to the base and used for opening the clamp; the grabbing mechanism is connected to the base and is used for grabbing the memory bank connector; and the visual positioning device is connected to the base and used for acquiring a position signal of the memory bank connector, and the robot responds to the position signal.
The material loading assembly line disclosed in this patent can realize grabbing of DRAM connector, however, this technical scheme structure is complicated, and the operation is more complicated.
Disclosure of Invention
The utility model provides a not enough to prior art, the utility model provides an automatic feeding, the device can realize the automatic feeding, the pay-off of DRAM connector.
The technical scheme of the utility model is that: an automatic feeding device comprises a rack, a feeding mechanism, a material pushing and guiding mechanism and a clamping mechanism, wherein the feeding mechanism and the material pushing and guiding mechanism are arranged on the rack and matched with each other, and the clamping mechanism is used for fixing a memory bank connector.
Preferably, the feeding mechanism comprises two feeding assemblies with the same structure.
Preferably, each feeding assembly comprises a drainage channel, a bin matched with the drainage channel and a driving assembly for pushing the memory bank connector into the guide and dialing groove, the driving assembly is arranged on the rack through a supporting plate, the bin is arranged on one side of the supporting plate and matched with the driving assembly, and the drainage channel is connected with the bin.
Preferably, each drainage channel comprises a first drainage plate, a second drainage plate and a plurality of drainage strips, the first drainage plate is connected with the second drainage plate through a connecting piece, the plurality of drainage strips are positioned on the outer side of the second drainage plate, a gap is formed between each drainage strip and the second drainage plate, the gap serves as a drainage channel, and the plurality of drainage strips are arranged on the bin through a connecting frame.
Preferably, the second drainage plate is an arc-shaped plate, and the corresponding second drainage plate of the drainage strip is of an arc-shaped structure.
Preferably, each of the bins comprises a first guide pillar and a second guide pillar which are symmetrically arranged, corresponding guide grooves are formed in the first guide pillar and the second guide pillar, and the memory bank connector stores and guides the memory bank through the guide grooves of the first guide pillar and the second guide pillar.
Preferably, the lower ends of the guide grooves of the first guide post and the second guide post are provided with corresponding memory bank connector outlets at positions close to the support plate.
Preferably, the driving assembly comprises a first material pushing cylinder and a second material pushing cylinder, the first material pushing cylinder and the second material pushing cylinder are respectively connected with the corresponding push plate through the corresponding connecting seats, and the first material pushing cylinder and the second material pushing cylinder are respectively arranged at the lower end of the corresponding stock bin and are positioned on one side, opposite to the guide and poke groove, of the corresponding stock bin.
Preferably, the pushing and guiding mechanism comprises a support, a transverse moving mechanism arranged on the support, and a longitudinal moving mechanism arranged on the transverse moving mechanism, and the longitudinal moving mechanism is provided with a guiding and guiding mechanism.
Preferably, the transverse moving mechanism comprises a mounting plate, a transverse rodless cylinder, a transverse sliding rail and a transverse sliding plate, the transverse rodless cylinder and the transverse sliding rail are both mounted on the mounting plate, the transverse sliding plate is connected with the transverse sliding rail in a sliding manner through a transverse sliding seat, the transverse sliding plate is further connected with the transverse rodless cylinder through a connecting seat, and the transverse sliding plate is driven to transversely slide on the transverse sliding rail through the transverse rodless cylinder.
Preferably, the longitudinal moving mechanism comprises a connecting plate, a longitudinal driving cylinder and a longitudinal sliding plate, the connecting plate is fixed on the transverse sliding plate, a plurality of longitudinal guide rails are arranged on the connecting plate along the vertical direction, the longitudinal sliding plate is connected with the longitudinal guide rails through corresponding sliding seats, the longitudinal sliding plate is further connected with the longitudinal driving cylinder arranged on the connecting plate, and a guiding and poking mechanism is arranged on the longitudinal sliding plate.
Preferably, the guiding and poking mechanism comprises a guiding and poking frame, and a plurality of guiding and poking rods are arranged at the lower end of the guiding and poking frame.
Preferably, the guide shifting rod extends into the guide shifting groove, so that the memory strip connector in the guide shifting groove is guided to the positive and negative inspection station of the connector and then to the pin inserting process.
Preferably, the clamping mechanism comprises a first clamping component and a second clamping component which are matched with each other.
Preferably, the first clamping assembly comprises a first clamping cylinder, a first sliding seat and a clamping frame, the first sliding seat is in an L shape, the first sliding seat is connected with a sliding rail arranged on the first clamping cylinder, the first sliding seat of the L shape is further connected with a piston rod of the first clamping cylinder, the first sliding seat is connected with the clamping frame through a connecting seat, and the clamping frame is in sliding connection with the sliding rail arranged on the frame.
Preferably, stoppers are further disposed on both sides of the clamping frame, and the moving position of the clamping frame is limited by the stoppers.
Preferably, the second clamping assembly comprises a second clamping cylinder, a second sliding seat and a second clamping seat, the second clamping cylinder is arranged on the frame through a supporting seat, the second clamping cylinder is connected with the second sliding seat, and the second sliding seat is connected with a corresponding guide rod arranged on the second clamping seat through a corresponding guide sleeve.
Preferably, the second clamping seat comprises a fixed seat and a clamping plate connected with the fixed seat, and a clamping groove is formed in the clamping plate.
Preferably, the lower ends of the first guide pillar and the second guide pillar are further provided with a plurality of photoelectric sensors, the photoelectric sensors are used for detecting the memory bank connectors in the corresponding bins, and if the memory bank connectors in the corresponding bins are detected, the other bin is started.
The utility model has the advantages that:
1. the utility model has simple structure and strong practicability, can realize the actions of guiding, storing, clamping and the like of the memory strip connector, and ensures the working efficiency through different storage bins;
2. the utility model can realize the automatic drainage of the memory board through the drainage plate with the arc structure, and can realize the placement of the memory strip connector through the mutual matching of the guide grooves of the first guide pillar and the second guide pillar;
3. the utility model utilizes the matching of the cylinder and the push plate to push the memory strip connector into the guide and dial groove through the discharge hole;
4. the utility model realizes the release of the memory bank connector by the transverse and longitudinal movement of the material pushing and guiding mechanism;
5. the utility model utilizes the clamping mechanism to realize the clamping of the memory bank connector, thereby facilitating the contact pin of the next process;
6. the utility model discloses utilize the interconversion of a plurality of feed bins, guarantee machining efficiency.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of another side of the present invention;
fig. 3 is a schematic structural view of the feeding mechanism of the present invention;
FIG. 4 is a schematic structural view of the drainage duct of the present invention;
fig. 5 is a schematic structural diagram of the storage bin of the present invention;
fig. 6 is a schematic structural diagram of the driving assembly of the present invention;
fig. 7 is a schematic structural view of the pushing and guiding mechanism of the present invention;
fig. 8 is an enlarged schematic structural view of the pushing and guiding mechanism of the present invention;
fig. 9 is a schematic structural view of the clamping mechanism of the present invention;
fig. 10 is a schematic structural view of a second clamping base of the present invention;
in the figure, 1-a frame, 2-a drainage channel, 3-a storage bin, 4-a driving component, 5-a transverse moving mechanism, 6-a longitudinal moving mechanism, 7-a guiding and poking mechanism, 8-a first clamping component, 9-a second clamping component and 10-a memory strip connector;
21-a support plate, 22-a first drainage plate, 23-a second drainage plate, 24-a drainage strip and 25-a connecting piece;
31-first guide post, 32-second guide post, 33-connecting frame, 34-memory strip connector outlet, 36-card slot;
41-a first material pushing cylinder, 42-a second material pushing cylinder, 43-a connecting seat and 44-a push plate;
51-mounting plate, 52-transverse rodless cylinder, 53-transverse sliding rail, 54-transverse sliding plate and 55-support;
61-connecting plate, 62-longitudinal driving cylinder and 63-longitudinal sliding plate;
71-guide frame, 72-guide rod, 73-guide groove;
81-a first clamping cylinder, 82-a first slide, 83-a clamping frame;
91-a second clamping cylinder, 92-a second sliding seat, 93-a second clamping seat, 94-a guide rod, 95-a fixed seat, 96-a clamping plate and 97-a clamping groove.
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1 and 2, the present embodiment provides an automatic feeding device, which includes a frame 1, a feeding mechanism and a material pushing and guiding mechanism that are disposed on the frame 1 and are matched with each other, the device, and a clamping mechanism for fixing a memory bank connector.
Preferably, the rack 1 includes a plurality of support columns and a workbench disposed at the upper ends of the support columns.
Preferably, the feeding mechanism includes two feeding assemblies with the same structure.
Preferably, as shown in fig. 3, each of the feeding assemblies includes a drainage channel 2, a bin 3 for matching with the drainage channel 2, and a driving assembly 4 for pushing the memory bank connector 10 into the guiding and dialing slot 73, the driving assembly 4 is disposed on the working platform of the rack 1 through a supporting plate 21, the bin 3 is disposed on the supporting plate 21 and matches with the driving assembly 4 on one side, and the drainage channel 2 is connected with the bin 3, so as to ensure that the memory bank connector 10 in the drainage channel 2 smoothly enters the bin 3.
Preferably, as shown in fig. 4, each of the drainage channels 2 includes a first drainage plate 22, a second drainage plate 23, and a plurality of drainage strips 24, the first drainage plate 22 is connected to the second drainage plate 23 by a connecting member 25, the plurality of drainage strips 24 are located above the second drainage plate 23, a gap is formed between the plurality of drainage strips 24 and the second drainage plate 23, the gap serves as a drainage channel, and the lower ends of the plurality of drainage strips 24 are disposed on the storage bin 3 by a connecting frame 33. In this embodiment, the second drainage plate 23 is an arc-shaped plate, and the corresponding second drainage plate 23 of the drainage strip 24 is also an arc-shaped structure.
Preferably, as shown in fig. 5, each of the bins 3 includes a first guide pillar 31 and a second guide pillar 32 symmetrically disposed, the first guide pillar 31 and the second guide pillar 32 are provided with corresponding guide grooves 36, and the memory bank connector 10 stores and guides the memory bank connector through the guide grooves 36 of the first guide pillar 31 and the second guide pillar 32. And the lower ends of the guide grooves 36 of the first guide post 31 and the second guide post 32 are provided with corresponding memory bank connector outlets 34 at positions close to the support plate 21. In addition, in this embodiment, a plurality of photoelectric sensors are further disposed at the lower ends of the first guide pillar 31 and the second guide pillar 32, and the memory bank connectors 10 in the corresponding bins 3 are detected by the photoelectric sensors.
Preferably, as shown in fig. 6, the driving assembly 4 includes a first material pushing cylinder 41 and a second material pushing cylinder 42, the first material pushing cylinder 41 and the second material pushing cylinder 42 are respectively connected to the corresponding push plate 44 through the corresponding connecting seat 43, and the first material pushing cylinder 41 and the second material pushing cylinder 42 are respectively disposed at the lower end of the corresponding bin 3 and located at the opposite side of the guiding and dialing slot 73.
As shown in fig. 7, the pushing and guiding mechanism preferably includes a support 55, a transverse moving mechanism 5 disposed on the support 55, and a longitudinal moving mechanism 6 disposed on the transverse moving mechanism 5, and the guiding and guiding mechanism 7 is disposed on the longitudinal moving mechanism 6.
Preferably, as shown in fig. 8, the transverse moving mechanism 5 includes a mounting plate 51, a transverse rodless cylinder 52, a transverse slide rail 53, and a transverse slide plate 54, the mounting plate 51 is fixed on the mounting plate 51 by a plurality of screws, the transverse rodless cylinder 52 and the transverse slide rail 53 are both mounted on the mounting plate 51, the transverse slide plate 54 is slidably connected with the transverse slide rail 53 by a transverse slide seat, the transverse slide plate 54 is further connected with the transverse rodless cylinder 52 by a connecting seat, and the transverse slide plate 54 is driven by the transverse rodless cylinder 52 to slide transversely on the transverse slide rail 53.
Preferably, as shown in fig. 8, the longitudinal moving mechanism 6 includes a connecting plate 61, a longitudinal driving cylinder 62, and a longitudinal sliding plate 63, the connecting plate 61 is fixed on the transverse sliding plate 54, the connecting plate 61 is provided with a plurality of longitudinal guide rails along the vertical direction, the longitudinal sliding plate 63 is connected with the longitudinal guide rails through corresponding sliding seats, the longitudinal sliding plate 63 is further connected with the longitudinal driving cylinder 62 provided on the connecting plate 61, and the longitudinal sliding plate 61 is provided with the guiding and poking mechanism 7.
As shown in fig. 8, the leading and pulling mechanism 7 of the present embodiment preferably includes a leading and pulling frame 71, and a plurality of leading and pulling rods 72 are disposed at the lower end of the leading and pulling frame 71, in the present embodiment, the number of the leading and pulling rods 72 is 2, and in the use process, the plurality of leading and pulling rods 72 extend into the leading and pulling groove 73, so as to lead and pull the memory stick connector 10 in the leading and pulling groove 73 to the pin insertion process.
Preferably, as shown in fig. 9, the clamping mechanism includes a first clamping assembly 8 and a second clamping assembly 9 which are matched with each other. The first clamping assembly 8 comprises a first clamping cylinder 81, a first sliding seat 82 and a clamping frame 83, the first sliding seat 82 is L-shaped, the L-shaped first sliding seat 82 is connected with a sliding rail arranged on the first clamping cylinder 81, the L-shaped first sliding seat 82 is further connected with a piston rod of the first clamping cylinder 81, the first sliding seat 82 is connected with the clamping frame 83 through a connecting seat, and the clamping frame 83 is slidably connected with the sliding rail arranged on the workbench.
Preferably, the second clamping assembly 9 includes a second clamping cylinder 91, a second sliding seat 92, and a second clamping seat 93, the second clamping cylinder 91 is disposed on the machine frame workbench through a supporting seat, the second clamping cylinder 91 is connected to the second sliding seat 92, and the second sliding seat 92 is connected to a corresponding guide rod 94 disposed on the second clamping seat 92 through a corresponding guide sleeve.
As shown in fig. 10, the second clamping seat 92 preferably includes a fixed seat 95 and a clamping plate 96 connected to the fixed seat 95, and the clamping plate 96 is provided with a clamping slot 97.
The foregoing embodiments and description have been provided to illustrate the principles and preferred embodiments of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the invention as claimed.
Claims (8)
1. An automatic feeding device comprises a rack and is characterized by also comprising a feeding mechanism, a pushing and guiding mechanism and a clamping mechanism, wherein the feeding mechanism and the pushing and guiding mechanism are arranged on the rack and are matched with each other;
the feeding mechanism comprises two feeding components with the same structure;
each feeding assembly comprises a drainage channel, a bin matched with the drainage channel and a driving assembly for pushing the memory bank connector into the guide and dialing groove, the driving assembly is arranged on the rack through a supporting plate, the bin is arranged on one side of the supporting plate and matched with the driving assembly, and the drainage channel is connected with the bin;
the material pushing and guiding mechanism comprises a support, a transverse moving mechanism arranged on the support and a longitudinal moving mechanism arranged on the transverse moving mechanism, and the longitudinal moving mechanism is provided with a guiding and guiding mechanism;
the clamping mechanism comprises a first clamping component and a second clamping component which are matched with each other.
2. The automatic feeding device according to claim 1, wherein: each drainage channel comprises a first drainage plate, a second drainage plate and a plurality of drainage strips, the first drainage plate is connected with the second drainage plate through a connecting piece, the drainage strips are positioned above the second drainage plate, a gap is formed between each drainage strip and the second drainage plate, the gap is used as a drainage channel, and the drainage strips are arranged on the storage bin through a connecting frame;
the second drainage plate be the arc, the corresponding second drainage plate of drainage strip also be the arc structure.
3. The automatic feeding device according to claim 1, wherein: each bin comprises a first guide pillar and a second guide pillar which are symmetrically arranged, and the first guide pillar and the second guide pillar are provided with corresponding guide grooves;
the lower ends of the guide grooves of the first guide post and the second guide post are provided with corresponding internal memory strip connector outlets at positions close to the support plate;
and a plurality of photoelectric sensors are arranged at the lower ends of the first guide pillar and the second guide pillar.
4. The automatic feeding device according to claim 1, wherein: the driving assembly comprises a first material pushing cylinder and a second material pushing cylinder, the first material pushing cylinder and the second material pushing cylinder are respectively connected with the corresponding push plate through the corresponding connecting seats, and the first material pushing cylinder and the second material pushing cylinder are respectively arranged at the lower end of the corresponding stock bin and are positioned on one side, opposite to the guide and poke groove.
5. The automatic feeding device according to claim 1, wherein: the transverse moving mechanism comprises a mounting plate, a transverse rodless cylinder, a transverse sliding rail and a transverse sliding plate, the transverse rodless cylinder and the transverse sliding rail are both mounted on the mounting plate, the transverse sliding plate is connected with the transverse sliding rail in a sliding mode through a transverse sliding seat, the transverse sliding plate is further connected with the transverse rodless cylinder through a connecting seat, and the transverse sliding plate is driven to transversely slide on the transverse sliding rail through the transverse rodless cylinder.
6. The automatic feeding device according to claim 1, wherein: the longitudinal moving mechanism comprises a connecting plate, a longitudinal driving cylinder and a longitudinal sliding plate, the connecting plate is fixed on the transverse sliding plate, a plurality of longitudinal guide rails are arranged on the connecting plate along the vertical direction, the longitudinal sliding plate is connected with the longitudinal guide rails through corresponding sliding seats, the longitudinal sliding plate is also connected with the longitudinal driving cylinder arranged on the connecting plate, and a guiding and poking mechanism is arranged on the longitudinal sliding plate.
7. The automatic feeding device according to claim 1, wherein: the guide and poke mechanism comprises a guide and poke frame, and a plurality of guide and poke rods are arranged at the lower end of the guide and poke frame;
when the memory bank connector is used, the plurality of guide shift rods extend into the guide shift grooves, so that the memory bank connector in the guide shift grooves is guided to the pin inserting process.
8. The automatic feeding device according to claim 1, wherein: the first clamping assembly comprises a first clamping cylinder, a first sliding seat and a clamping frame, the first sliding seat is L-shaped and is connected with a sliding rail arranged on the first clamping cylinder, the L-shaped first sliding seat is also connected with a piston rod of the first clamping cylinder, the first sliding seat is connected with the clamping frame through a connecting seat, and the clamping frame is in sliding connection with the sliding rail arranged on the frame;
the second clamping assembly comprises a second clamping cylinder, a second sliding seat and a second clamping seat, the second clamping cylinder is arranged on the rack through a supporting seat, the second clamping cylinder is connected with the second sliding seat, and the second sliding seat is connected with a corresponding guide rod arranged on the second clamping seat through a corresponding guide sleeve;
the second clamp holder comprises a fixing seat and a clamping plate connected with the fixing seat, and a clamping groove is formed in the clamping plate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120335985.9U CN215158644U (en) | 2021-02-05 | 2021-02-05 | Automatic feeding device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202120335985.9U CN215158644U (en) | 2021-02-05 | 2021-02-05 | Automatic feeding device |
Publications (1)
Publication Number | Publication Date |
---|---|
CN215158644U true CN215158644U (en) | 2021-12-14 |
Family
ID=79410328
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202120335985.9U Active CN215158644U (en) | 2021-02-05 | 2021-02-05 | Automatic feeding device |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN215158644U (en) |
-
2021
- 2021-02-05 CN CN202120335985.9U patent/CN215158644U/en active Active
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2024193047A1 (en) | Automatic testing device and method for optical module | |
CN107330481B (en) | Card reading-writing and conveying system in self-service card-receiving machine | |
CN208853578U (en) | A kind of contact pin hat spring kludge | |
CN113346330A (en) | Full-automatic assembling and detecting equipment for electric connector | |
CN112811129A (en) | Automatic feeding device | |
CN112018584A (en) | PCB wiring terminal assembling device and method | |
CN215158644U (en) | Automatic feeding device | |
CN110707506A (en) | Full-automatic pre-insertion machine | |
CN219417558U (en) | Optical module testing mechanism and equipment | |
CN220241222U (en) | Material disc clamping and positioning device and optical module automatic test equipment | |
CN116100743B (en) | Automatic integrated production system of automobile sensor | |
CN109787065B (en) | intelligent manufacturing production process of Type-C connector | |
CN209522242U (en) | A kind of small part automatic array machine | |
CN216348385U (en) | Length and width dimension detection device | |
CN106982548B (en) | Transformer feeding mechanism of automatic component inserter | |
CN115569869A (en) | Automatic detection and sorting equipment for optical device bonding wires | |
CN212304167U (en) | Insert shell feed mechanism | |
CN113681288A (en) | Automatic assembly production line for disposable cigarette cartridges | |
CN208862352U (en) | A kind of contact pin embedment mechanism of car plug | |
CN113415626A (en) | Memory bank aging test equipment | |
CN112090770A (en) | Assembly testing mechanism | |
CN109092984B (en) | A kind of storage card receiver punching press detection line for PC machine | |
CN220161694U (en) | Robot gripper | |
CN220165113U (en) | Automatic feeding device | |
CN216334018U (en) | Multilayer self-limiting storage device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GR01 | Patent grant | ||
GR01 | Patent grant |