CN208853950U - A kind of bar code engraving laser engraving machine protective device - Google Patents
A kind of bar code engraving laser engraving machine protective device Download PDFInfo
- Publication number
- CN208853950U CN208853950U CN201821479534.7U CN201821479534U CN208853950U CN 208853950 U CN208853950 U CN 208853950U CN 201821479534 U CN201821479534 U CN 201821479534U CN 208853950 U CN208853950 U CN 208853950U
- Authority
- CN
- China
- Prior art keywords
- tube
- laser
- damping
- fixedly connected
- far
- 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
Landscapes
- Laser Beam Processing (AREA)
Abstract
The utility model relates to laser-engraving technique fields, and disclose bar code engraving laser engraving machine protective device, including laser engraving machine main body, the internal slide of the laser engraving machine main body is connected with crossbeam, laser tube head is slidably connected on the crossbeam, top and bottom at left and right sides of the laser tube head is fixedly connected to damping containing tube, airsac tube is fixedly connected at the top and bottom of the first side of laser tube inside the damping containing tube, the internal activity of two airsac tubes is connected with air bag, flexible iron plate is fixedly connected at the top and bottom of the first side of laser tube inside the damping containing tube, two elastic iron plates are respectively positioned on two opposite sides of airsac tube, piston is fixedly connected on the inside of two elastic iron plates.The utility model, have protection laser tube head, reduce failure rate the advantages that, solve the problems, such as laser tube head be expert at journey stop and collision.
Description
Technical field
The utility model relates to laser-engraving technique field, specially a kind of bar code engraving is protected with laser engraving machine and is filled
It sets.
Background technique
A kind of sophisticated equipment carved using the material that laser carves needs.Laser engraving machine is different from mechanical carving
Quarter machine and other traditional hand engraving modes, mechanical sculpturing machine is using extreme hardness such as mechanical means, such as diamond
Material carves other things, and laser engraving machine is then to be carved using the thermal energy of laser to material, in laser engraving machine
Laser be its core where, in general, the use scope of laser engraving machine is more extensive, and it is higher to carve precision,
Carving speed is also more quick, and relative to traditional hand engraving mode, laser engraving can also accomplish engraving effect
It is very fine and smooth, it is at all no less than the technological level of hand engraving, exactly because laser engraving machine has so many superiority, so
The application of present laser engraving machine has gradually replaced traditional engraving equipment and mode, becomes main engraving equipment.
Since laser engraving machine has many advantages, such as relative to traditional engraving equipment and mode, so laser engraving machine is
Use is received by many people, but laser cutting machine is opposite also shortcomings with traditional engraving equipment, but current city
The improvement of laser cutting machine on field is opposite to focus on shading, dedusting and degasification, but the machinery of laser cutting machine itself is lacked
Weary protection, laser tube head make the left and right two of laser tube head collision engraving machine because of the program stroke excess of stroke sometimes at work
Side, this will cause the consequence of damage to fragile laser tube head, and replacement laser tube head is just necessarily required to after damaging, and laser tube
Head it is at high price, it is erroneous for installation, it is costly time-consuming, reduce carving efficiency, be unfavorable for user's use, so propose one kind
Bar code engraving is solved the above problems with laser engraving machine protective device.
Utility model content
(1) the technical issues of solving
In view of the deficiencies of the prior art, the utility model provides a kind of bar code engraving laser engraving machine protective device,
Have protection laser tube head, reduce failure rate the advantages that, solve the problems, such as laser tube head be expert at journey stop and collision.
(2) technical solution
To realize above-mentioned protection laser tube head, failure rate purpose is reduced, the utility model provides the following technical solutions: a kind of
Bar code engraving laser engraving machine protective device, including laser engraving machine main body, the internal slide of the laser engraving machine main body
It is connected with crossbeam, laser tube head is slidably connected on the crossbeam, the top and bottom at left and right sides of the laser tube head is solid
Surely it is connected with damping containing tube, is fixedly connected at the top and bottom of the first side of laser tube inside the damping containing tube
Airsac tube, the internal activity of two airsac tubes are connected with air bag, the close first side of laser tube inside the damping containing tube
Top and bottom be fixedly connected with flexible iron plate, two elastic iron plates are respectively positioned on two opposite sides of airsac tube,
It is fixedly connected to piston on the inside of two elastic iron plates, the opposite side of two pistons is run through and extends to gas
The inside of capsule pipe, the opposite side of the piston are fixedly connected with air bag, and two sides of the airsac tube far from air bag connect
Damping telescoping tube is touched, the two described one end of elastic iron plate far from laser tube head are fixedly connected with damping telescoping tube, the damping
Telescoping tube top and bottom is fixedly connected to vacuum capsule far from the side of elastic iron plate, and two vacuum capsules are stretched far from damping
One end of the draw is fixedly connected with damping containing tube, and the inside of the damping containing tube is fixedly connected far from the side of laser tube head
There is central tube, the central tube is located at the opposite side of two airsac tubes, and the inside of the damping containing tube is far from laser tube
The side of head is fixedly connected with elastic bar, and the inside of the central tube is solid far from the top and bottom of damping containing tube one end
Surely it is connected with cross bar, pulley is socketed on two cross bars, the outside of two pulleys is flexibly connected with elastic bar,
The front and back of the central tube offers U shape slot, and the inside of the damping telescoping tube is close to one end of damping containing tube
It is fixedly connected with gag lever post, the outside of the gag lever post is flexibly connected with elastic bar, and the damping telescoping tube is received far from damping
Receiving one end of pipe is fixedly connected with baffle, and the back side and the crossbeam of the baffle are slidably connected.
Preferably, the top and bottom at left and right sides of the laser tube head is fixedly connected to spring, and the spring is separate
The side of laser tube head is fixedly connected with baffle, and the spring is located at the inside of damping containing tube.
Preferably, the piston includes sealing rubber pad, push rod and piston tube, the push rod far from elastic iron plate one
End is fixedly connected with sealing rubber pad, and the sealing rubber pad is located at the inside of piston tube, and the push rod is far from elastic iron plate
One end is run through and extends to the inside of piston tube.
Preferably, resilient cushion is fixedly connected with close to one end of damping containing tube on the inside of the U-lag.
Preferably, the inside of two vacuum capsules is evenly distributed a strut, and the top and bottom end of the strut are and very
Empty pocket is fixedly connected.
Preferably, the inside of the airsac tube includes telescopic rod, and the telescopic rod is located at one of air bag far from damping tube
End, the one end of the telescopic rod far from air bag is contacted with damping telescoping tube.
(3) beneficial effect
Compared with prior art, the utility model provides a kind of bar code engraving laser engraving machine protective device, has
Below the utility model has the advantages that
1, bar code engraving laser engraving machine protective device, passes through the vacuum between damping containing tube and damping telescoping tube
Capsule, when occurring to stop collision, vacuum capsule expands, while vacuum capsule air pressure inside is less than outside, can be to the contraction of damping telescoping tube
Damping, and then damping are provided, and the elastic iron plate of the other side can deform in damping telescoping tube contraction process, itself has
Elasticity allow elastic iron plate to have the effect of elastic force to damping telescoping tube, elastic iron plate will push piston to gas while deformation
Air bag inflation inside capsule pipe, air bag expands and then pushes damping telescoping tube, so that damping effect is more preferable, it is effective to reduce vibration
Damage to laser tube head.
2, bar code engraving laser engraving machine protective device, the cunning at the top of central tube is successively bypassed by a M font
The pulley of wheel, gag lever post and center bottom of the tube, when damping telescoping tube is shunk, gag lever post is elongated at a distance from pulley, Jin Erla
Elastic bar is stretched, the elasticity backtracking of elastic bar can apply elastic force to gag lever post, and because gag lever post is fixed with damping telescoping tube
Connection then prevents the contraction of damping telescoping tube, so that damping effect is better, guarantees to be transmitted to laser tube when stop collision
The vibration of head remains little, and has protected laser tube head.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is the enlarged structure schematic diagram in the portion A in Fig. 1；
Fig. 3 is the attachment structure schematic diagram of the utility model damping containing tube and damping telescoping tube；
Fig. 4 is the side view of the utility model damping containing tube.
In figure: 1 laser engraving machine main body, 2 crossbeams, 3 laser tube heads, 4 damping containing tubes, 5 airsac tubes, 6 air bags, 7 elasticity
Iron plate, 8 pistons, 801 sealing rubber pads, 802 push rods, 803 piston tubes, 9 damping telescoping tubes, 10 vacuum capsules, 11 central tubes, 12 bullets
Property rib, 13 cross bars, 14 pulleys, 15U shape slot, 16 gag lever posts, 17 baffles, 18 springs, 19 resilient cushions, 20 struts.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Please refer to Fig. 1-4, a kind of bar code engraving laser engraving machine protective device, including laser engraving machine main body 1, laser
The internal slide of engraving machine main body 1 is connected with crossbeam 2, and laser tube head 3,3 left and right sides of laser tube head are slidably connected on crossbeam 2
Top and bottom be fixedly connected to damping containing tube 4,4 inside of damping containing tube close to 3 side of laser tube head top and
Bottom is fixedly connected to airsac tube 5, and the internal activity of two airsac tubes 5 is connected with air bag 6, and 4 inside of damping containing tube is close
Flexible iron plate 7 is fixedly connected at the top and bottom of 3 side of laser tube head, two elastic iron plates 7 are respectively positioned on two airsac tubes 5
The inside of opposite side, two elastic iron plates 7 is fixedly connected to piston 8, and the opposite side of two pistons 8 is run through and prolonged
The inside of airsac tube 5 is extended to, the opposite side of piston 8 is fixedly connected with air bag 6, and two sides of the airsac tube 5 far from air bag 6 are equal
Damping telescoping tube 9 is contacted, two one end of elastic iron plate 7 far from laser tube head 3 are fixedly connected with damping telescoping tube 9, elastic iron
Plate 7 can deform in 9 contraction process of damping telescoping tube, and the elasticity itself having allows elastic iron plate 7 to have one to damping telescoping tube 9
Elastic force effect, elastic iron plate 7 will push while deformation piston 8 to airsac tube 5 inside air bag 6 inflation, air bag 6 expand into
And damping telescoping tube 9 is pushed, so that damping effect is more preferable, the effective damage for reducing vibration to laser tube head 3, damping telescoping tube
9 top and bottoms are fixedly connected to vacuum capsule 10 far from the side of elastic iron plate 7, and two vacuum capsules 10 are far from damping telescoping tube
9 one end is fixedly connected with damping containing tube 4, by the vacuum capsule 10 between damping containing tube 4 and damping telescoping tube 9, works as hair
It is raw to stop 10 expansion of vacuum capsule when collision, while 10 air pressure inside of vacuum capsule is less than outside, can mention to the contraction of damping telescoping tube 9
For damping, and then damping, the inside of damping containing tube 4 are fixedly connected with central tube 11 far from the side of laser tube head 3, in
Heart pipe 11 is located at the opposite side of two airsac tubes 5, and the inside of damping containing tube 4 is far from the fixed company in the side of laser tube head 3
It is connected to elastic bar 12, the inside of central tube 11 is far from being fixedly connected to cross bar at the top and bottom of 4 one end of damping containing tube
13, pulley 14 is socketed on two cross bars 13, and the outside of two pulleys 14 is flexibly connected with elastic bar 12, central tube 11
Front and back offers U-lag 15, and one end of inside close to the damping containing tube 4 of damping telescoping tube 9 is fixedly connected limited
Position bar 16, the outside of gag lever post 16 are flexibly connected with elastic bar 12, elastic bar 12, are connected by fixed inside central tube 11
The elastic bar 12 connect successively bypasses pulley 14, gag lever post 16 and 11 bottom of central tube at 11 top of central tube by a M font
The pulley 14 in portion, when damping telescoping tube 9 is shunk, gag lever post 16 is elongated at a distance from pulley 14, and then tensile elasticity rib 12,
The elasticity backtracking of elastic bar 12 can apply elastic force to gag lever post 16, and connect because of gag lever post 16 and damping telescoping tube 9 are fixed
It connects, then prevents the contraction of damping telescoping tube 9, guarantee that the vibration for being transmitted to laser tube head 3 when baffle 17 collides remains little, subtract
It shakes telescoping tube 9 and is fixedly connected with baffle 17 far from one end of damping containing tube 4, the back side and the crossbeam 2 of baffle 17 are slidably connected.
Further, the top and bottom of 3 left and right sides of laser tube head is fixedly connected to spring 18, and spring 18 is far from sharp
The side of light pipe head 3 is fixedly connected with baffle 17, and spring 18 is located at the inside of damping containing tube 4, and spring 18 can be in collision
Vibration of the baffle 17 to laser tube head 3 is effectively reduced, the effect of damping is provided.
Further, piston 8 includes sealing rubber pad 801, push rod 802 and piston tube 803, and push rod 802 is far from elasticity
One end of iron plate 7 is fixedly connected with sealing rubber pad 801, and sealing rubber pad 801 is located at the inside of piston tube 803, and push rod 802 is remote
The inside of piston tube 803 is run through and extended in one end from elastic iron plate 7, is applied using the deformation of elastic iron plate 7 to push rod 802
Reinforcing, push rod 802 pushes sealing rubber pad 801, so that the gas inside piston tube 803 enters the inside of air bag 6,
Air bag 6 is expanded.
Further, 15 inside of U-lag is fixedly connected with resilient cushion 19 close to one end of damping containing tube 4, prevents from limiting
The direct collision when damping telescoping tube 9 is compressed of bar 16 passes through 19 damping of resilient cushion in touching to central tube 11.
Further, the inside of vacuum capsule 10 is evenly distributed a strut 20, the top and bottom end of strut 20 with vacuum capsule
10 are fixedly connected, and strut 20 plays certain supporting role to vacuum capsule 10, prevent the deformation of vacuum capsule 10.
Further, the inside of airsac tube 5 includes telescopic rod 501, and telescopic rod 501 is located at air bag 6 far from damping tube
One end simultaneously contacts, and the one end of telescopic rod 501 far from air bag 6 is contacted with damping telescoping tube 9, flexible by expanding against for air bag 6
Bar 501 and then promotion damping telescoping tube 9, reduce vibration.
Working principle: through the vacuum capsule 10 between damping containing tube 4 and damping telescoping tube 9, when occurring to stop collision
Vacuum capsule 10 expands, while 10 air pressure inside of vacuum capsule is less than outside, can provide damping to the contraction of damping telescoping tube 9,
And then damping, and the elastic iron plate 7 of the other side can deform in 9 contraction process of damping telescoping tube, and the elasticity itself having allows bullet
Property iron plate 7 have the effect of elastic force to damping telescoping tube 9, elastic iron plate 7 will push piston 8 to airsac tube 5 while deformation
Internal air bag 6 is inflated, and air bag 6 expands and then push damping telescoping tube 9, passes through the elasticity being fixedly connected inside central tube 11
Rib 12 successively bypasses the pulley 14 at 11 top of central tube, the pulley of gag lever post 16 and 11 bottom of central tube by a M font
14, when damping telescoping tube 9 is shunk, gag lever post 16 is elongated at a distance from pulley 14, and then tensile elasticity rib 12, elastic bar
12 elasticity backtracking can apply elastic force to gag lever post 16, and because gag lever post 16 is fixedly connected with damping telescoping tube 9, then prevent
The contraction of damping telescoping tube 9 guarantees that the vibration that laser tube head 3 is transmitted to when baffle 17 collides remains little, the utility model energy
The advantages of enough protecting laser tube head 3, reducing failure rate, simple to install is convenient, the use for the person of being convenient to use.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence "including a ...", it is not excluded that
There is also other identical elements in process, method, article or equipment including the element.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (6)
1. a kind of bar code engraving laser engraving machine protective device, including laser engraving machine main body (1), it is characterised in that: described
The internal slide of laser engraving machine main body (1) is connected with crossbeam (2), slidably connects laser tube head (3) on the crossbeam (2),
Top and bottom at left and right sides of the laser tube head (3) is fixedly connected to damping containing tube (4), the damping containing tube
(4) internal to be fixedly connected to airsac tube (5) at the top and bottom of laser tube head (3) side, two airsac tubes (5)
Internal activity be connected with air bag (6), the internal top and bottom close to laser tube head (3) side of the damping containing tube (4)
It being fixedly connected with flexible iron plate (7), two elastic iron plates (7) are respectively positioned on two opposite sides of airsac tube (5), and two
It is fixedly connected to piston (8) on the inside of the elasticity iron plate (7), two opposite sides of the piston (8) are run through and prolonged
The inside of airsac tube (5) is extended to, the opposite side of the piston (8) is fixedly connected with air bag (6), two airsac tubes (5)
Side far from air bag (6) contacts damping telescoping tube (9), the two described elastic one end of iron plate (7) far from laser tube head (3)
It is fixedly connected with damping telescoping tube (9), side of damping telescoping tube (9) top and bottom far from elastic iron plate (7) is solid
Surely it is connected with vacuum capsule (10), one end and damping containing tube (4) far from damping telescoping tube (9) of two vacuum capsules (10) are solid
Fixed connection, the inside of the damping containing tube (4) is fixedly connected with central tube (11) far from the side of laser tube head (3), described
Central tube (11) is located at the opposite side of two airsac tubes (5), and the inside of the damping containing tube (4) is far from laser tube head
(3) side is fixedly connected with elastic bar (12), and the inside of the central tube (11) is far from the top of damping containing tube (4) one end
Portion and bottom are fixedly connected to cross bar (13), are socketed with pulley (14) on two cross bars (13), two pulleys
(14) outside is flexibly connected with elastic bar (12), and the front and back of the central tube (11) offers U-lag (15),
One end of inside close to the damping containing tube (4) of the damping telescoping tube (9) is fixedly connected with gag lever post (16), the gag lever post
(16) outside is flexibly connected with elastic bar (12), and the damping telescoping tube (9) is fixed far from the one end of damping containing tube (4)
It is connected with baffle (17), the back side and the crossbeam (2) of the baffle (17) are slidably connected.
2. a kind of bar code engraving laser engraving machine protective device according to claim 1, it is characterised in that: the laser
Top and bottom at left and right sides of tube head (3) is fixedly connected to spring (18), and the spring (18) is far from laser tube head (3)
Side is fixedly connected with baffle (17), and the spring (18) is located at the inside of damping containing tube (4).
3. a kind of bar code engraving laser engraving machine protective device according to claim 1, it is characterised in that: the piston
It (8) include sealing rubber pad (801), push rod (802) and piston tube (803), the push rod (802) is far from elastic iron plate (7)
One end be fixedly connected with sealing rubber pad (801), the sealing rubber pad (801) is located at the inside of piston tube (803), described
Push rod (802) runs through far from one end of elastic iron plate (7) and extends to the inside of piston tube (803).
4. a kind of bar code engraving laser engraving machine protective device according to claim 1, it is characterised in that: the U-shaped
One end on the inside of slot (15) close to damping containing tube (4) is fixedly connected with resilient cushion (19).
5. a kind of bar code engraving laser engraving machine protective device according to claim 1, it is characterised in that: the vacuum
The inside of capsule (10) is evenly distributed to be had strut (20), and the top and bottom end of the strut (20), which are fixed with vacuum capsule (10), to be connected
It connects.
6. a kind of bar code engraving laser engraving machine protective device according to claim 1, it is characterised in that: the air bag
The inside for managing (5) includes telescopic rod (501), and the telescopic rod (501) is located at the one end of air bag (6) far from damping tube, described
Telescopic rod (501) is contacted far from the one end of air bag (6) with damping telescoping tube (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821479534.7U CN208853950U (en) | 2018-09-11 | 2018-09-11 | A kind of bar code engraving laser engraving machine protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821479534.7U CN208853950U (en) | 2018-09-11 | 2018-09-11 | A kind of bar code engraving laser engraving machine protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208853950U true CN208853950U (en) | 2019-05-14 |
Family
ID=66417555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821479534.7U Active CN208853950U (en) | 2018-09-11 | 2018-09-11 | A kind of bar code engraving laser engraving machine protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208853950U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023061784A3 (en) * | 2021-10-15 | 2023-06-08 | TRUMPF Werkzeugmaschinen SE + Co. KG | Collision protection for a machining head of a laser machine tool with use of a gimbal mount |
| CN116748701A (en) * | 2023-08-11 | 2023-09-15 | 济南森峰激光科技股份有限公司 | Automatic obstacle avoidance laser cutting head |
-
2018
- 2018-09-11 CN CN201821479534.7U patent/CN208853950U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023061784A3 (en) * | 2021-10-15 | 2023-06-08 | TRUMPF Werkzeugmaschinen SE + Co. KG | Collision protection for a machining head of a laser machine tool with use of a gimbal mount |
| CN116748701A (en) * | 2023-08-11 | 2023-09-15 | 济南森峰激光科技股份有限公司 | Automatic obstacle avoidance laser cutting head |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208853950U (en) | A kind of bar code engraving laser engraving machine protective device | |
| CN206544427U (en) | A kind of numerical controlled carving equipment of pair of engraving member | |
| CN206421293U (en) | A kind of computer antishock device | |
| CN109751414A (en) | A kind of multifunctional pressure container | |
| CN208555320U (en) | A kind of efficient descaling machine of blind hole clast | |
| CN207550556U (en) | A kind of low noise Dry Powder Canning Machine | |
| CN213929010U (en) | Swing arm hydro-cylinder with prevent destroying protection device | |
| CN211202481U (en) | Damage-proof hydraulic oil cylinder | |
| CN209309331U (en) | A kind of resilient seal gasket | |
| CN208803966U (en) | It is a kind of to facilitate the air compressor machine for carrying out damping installation | |
| CN208660566U (en) | A kind of filter element of precision filter | |
| CN210539119U (en) | Detachable cheek protector of high-toughness helmet | |
| CN105081907A (en) | Novel rapid hole grinding machine for stone plates | |
| CN208983276U (en) | A kind of high power road lamp cap with buckle-type lamp holder | |
| CN207554660U (en) | A kind of new type of compression spring | |
| CN214317660U (en) | Strong-self-adaptive air pillow inflating device | |
| CN205125645U (en) | Can prevent to remove dead seat of wheel card | |
| CN214534254U (en) | Shell structure of thermal power plant dust collecting equipment | |
| CN210239946U (en) | Portable vacuum generator | |
| CN211515814U (en) | Shock absorption protection device for automobile stamping die | |
| CN217103595U (en) | Optical fiber production prefabricated stick transfer device | |
| CN207879761U (en) | A kind of hydraulic cylinder | |
| CN218421615U (en) | Bag type dust removal framework | |
| CN217732384U (en) | High security elevator | |
| CN212929212U (en) | Novel power plant boiler sliding seat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |