CN214417939U - Follow-up positioning mechanism, upper positioning device and laser welding equipment - Google Patents
Follow-up positioning mechanism, upper positioning device and laser welding equipment Download PDFInfo
- Publication number
- CN214417939U CN214417939U CN202023227906.7U CN202023227906U CN214417939U CN 214417939 U CN214417939 U CN 214417939U CN 202023227906 U CN202023227906 U CN 202023227906U CN 214417939 U CN214417939 U CN 214417939U
- Authority
- CN
- China
- Prior art keywords
- plate
- follow
- assembly
- transition
- positioning mechanism
- 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
Abstract
The utility model relates to a follow-up positioning mechanism, go up positioner and laser welding equipment. The follow-up positioning mechanism comprises a mounting plate, a first follow-up component, a transition plate, a second follow-up component and a pressing plate, wherein the mounting plate, the transition plate and the pressing plate are sequentially stacked, the first follow-up component is arranged between the mounting plate and the transition plate and can enable the transition plate to slide along the X direction relative to the mounting plate, and the second follow-up component is arranged between the transition plate and the pressing plate and can enable the pressing plate to slide along the Y direction relative to the transition plate; the first follow-up assembly and the second follow-up assembly respectively comprise a plurality of guide rails and a plurality of sliding blocks, and sliding grooves matched with the guide rails are formed in the sliding blocks. According to the servo positioning mechanism, due to the arrangement of the first servo assembly and the second servo assembly, the cover plate is effectively prevented from being scratched due to relative displacement between the pressing plate and the power battery.
Description
Technical Field
The utility model relates to a power battery processing technology field especially relates to a follow-up positioning mechanism, go up positioner and laser welding equipment.
Background
At the present stage, when a shell and a top cover of the power battery are subjected to laser sealing welding, a plurality of manufacturers need to position the top cover of the power battery. When the long and short sides are positioned after the power battery is positioned, the upper positioning pressing plate and the battery top cover can generate mutual friction, so that the power battery top cover generates scratches, a large number of products with poor appearances are produced, and the production yield of the power battery is greatly reduced.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a follow-up positioning mechanism, an upper positioning device and a laser welding device, aiming at the problem that when long and short sides are positioned, the upper positioning pressing plate and the battery top cover generate mutual friction to scratch the top cover of the power battery.
A follow-up positioning mechanism comprises a mounting plate, a first follow-up component, a transition plate, a second follow-up component and a pressure plate, wherein the mounting plate, the transition plate and the pressure plate are sequentially stacked, the first follow-up component is arranged between the mounting plate and the transition plate and can enable the transition plate to slide along the X direction relative to the mounting plate, and the second follow-up component is arranged between the transition plate and the pressure plate and can enable the pressure plate to slide along the Y direction relative to the transition plate;
the first follow-up assembly and the second follow-up assembly respectively comprise a plurality of guide rails and a plurality of sliding blocks, sliding grooves matched with the guide rails are formed in the sliding blocks, the guide rails of the first follow-up assembly are connected to the mounting plate, the sliding blocks of the first follow-up assembly are connected to the transition plate, the guide rails of the second follow-up assembly are connected to the transition plate, and the sliding blocks of the second follow-up assembly are connected to the pressing plate.
In one of them embodiment, follow-up positioning mechanism still includes first subassembly that resets, first subassembly that resets includes guiding axle, movable block, stopper and spring, the guiding axle extends along the X direction, the movable block wears to locate the middle part of guiding axle, and fixed connection in cross the cab apron, the stopper is located the mounting panel with between the clamp plate, the end connection of guiding axle in the stopper, the spring housing is located the guiding axle, and be located the movable block with between the stopper.
In one embodiment, the servo positioning mechanism further comprises a second resetting component, the second resetting component comprises a plurality of elastic pieces, one end of each elastic piece is connected to the pressing plate, the other end of each elastic piece is connected to the transition plate, and each elastic piece can elastically deform along the Y direction.
In one embodiment, the servo positioning mechanism further comprises a reference plate and a plurality of differential heads, the reference plate is arranged on one side, facing the transition plate, of the pressure plate, the differential heads are arranged on the transition plate, and measuring ends of the differential heads abut against the reference plate.
In one embodiment, the pressing plate comprises a first pressing block and a second pressing block which are arranged at intervals.
The upper positioning device comprises a servo positioning mechanism, and further comprises a rack and a lifting mechanism, wherein the lifting mechanism is arranged on the rack and used for driving the servo positioning mechanism to ascend or descend.
In one embodiment, the lifting mechanism includes a plurality of guide rods and linear bearings, the linear bearings are disposed on the frame, and the guide rods are disposed through the linear bearings and connected to the mounting plate.
In one embodiment, the lifting mechanism further comprises a top plate and a buffer member, the top plate is arranged at one end, far away from the mounting plate, of the guide rod, and the buffer member is arranged on the rack and abuts against the top plate.
In one embodiment, the lifting mechanism further comprises a lifting cylinder, a cylinder body of the lifting cylinder is mounted on the frame, and a push rod of the lifting cylinder is connected to the mounting plate.
A laser welding device comprises the upper positioning device.
According to the servo positioning mechanism, the lifting cylinder drives the servo positioning mechanism to descend to a proper height so as to position the cover plate of the power battery upwards, and the pressing plate of the servo positioning mechanism and the cover plate are kept in a pressing state. And then in the long edge positioning process, the power battery moves along the direction perpendicular to the length direction, namely the X direction, and due to the arrangement of the first follow-up component, the pressing plate can move along the X direction relative to the mounting plate along with the power battery, so that the cover plate is effectively prevented from being scratched due to the relative displacement between the pressing plate and the power battery. Similarly, in the short edge positioning process, the power battery moves along the direction perpendicular to the width direction, namely the Y direction, and due to the arrangement of the second follow-up component, the pressing plate can move along the Y direction relative to the mounting plate along with the power battery, so that the cover plate is prevented from being scratched due to the fact that the pressing plate and the power battery generate relative displacement.
Drawings
FIG. 1 is a schematic diagram of an upper positioning device according to an embodiment;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is a schematic view of a follower positioning mechanism of the upper positioning device of FIG. 1;
FIG. 4 is a schematic view of the slave positioning mechanism of FIG. 3 from another perspective;
FIG. 5 is a schematic structural diagram of a first follower assembly and a first position-limiting assembly in the follower positioning mechanism shown in FIG. 3;
fig. 6 is a schematic structural diagram of a second follower assembly in the follower positioning mechanism shown in fig. 3.
The following detailed description of the invention will be made in conjunction with the above drawings.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Power battery includes casing and apron, the casing is one end open-ended hollow structure, the apron covers in the open end of casing, form a cavity that holds electrolyte, the mode that generally adopts laser welding in power battery production process is together fixed with casing and apron and is realized sealedly, sealed the completion back, inject electrolyte into in the cavity, be equipped with the notes liquid hole of injecting electrolyte into in the cavity on the apron, electrolyte pours into the completion back, in order to avoid electrolyte to leak outward, it is sealed with sealed nail with annotating the liquid hole, it is concrete, will seal during the nail inserts the notes liquid hole, then fix both and realize sealedly through the welding. The utility model provides a laser welding equipment for carry out laser welding to power battery's casing and apron. The laser welding equipment comprises an upper positioning device and a laser welding head, wherein the upper positioning device is used for clamping and fixing the power battery so that the laser welding head can weld the power battery along a preset welding track.
Before welding, the power battery needs to be positioned at the upper part and the long and short sides, and the production process of the power battery generally comprises the steps of positioning at the upper part and then positioning the long and short sides. In the long and short edge positioning process, the upper positioning pressing plate is still in a pressing state, acting force is exerted on the cover plate in the vertical direction, and when the power battery is displaced relative to the upper positioning pressing plate in the horizontal direction, the upper positioning pressing plate and the cover plate can generate mutual friction, so that the cover plate generates scratches, a large amount of products with poor appearances are produced, and the production yield of the power battery is greatly reduced.
Referring to fig. 1, the upper positioning device of the present invention includes a frame 300, a lifting mechanism 200, and a following positioning mechanism 100.
The frame 300 is entirely "n" shaped. The rack 300 includes a cross beam 310 and two support columns 320, wherein the two support columns 320 are vertically disposed at two ends of the cross beam 310. The tip of support column 320 is equipped with backing plate 321, has seted up the mounting hole on the backing plate 321, conveniently is fixed in board or ground with frame 300 through backing plate 321. The rack 300 serves as an installation carrier of the follow-up positioning mechanism 100, so that the follow-up positioning mechanism 100 can be suspended above the long and short side positioning mechanisms, and the follow-up positioning mechanism 100 can conveniently position the cover plate of the power battery B in the vertical direction.
The lifting mechanism 200 is disposed on the frame 300 and is used for driving the following positioning mechanism 100 to ascend or descend. In the process of upper positioning, the lifting mechanism 200 drives the servo positioning mechanism 100 to descend to a certain height, and the servo positioning mechanism 100 presses downwards so that the height of the upper surface of the cover plate is within the processing range of the laser welding head. After the positioning is finished, the lifting mechanism 200 drives the following positioning mechanism 100 to ascend, and the following positioning mechanism 100 is separated from the cover plate.
In one embodiment, referring to fig. 2, the lifting mechanism 200 includes a lifting cylinder 210, a cylinder body of the lifting cylinder 210 is mounted on the frame 300, and a push rod of the lifting cylinder 210 is connected to the following positioning mechanism 100.
The lifting mechanism 200 includes a plurality of guide rods 220 and linear bearings 230, the linear bearings 230 are disposed on the frame 300, and the guide rods 220 are disposed through the linear bearings 230 and connected to the mounting plate 10. In the movement process of the lifting cylinder 210, the guide rod 220 plays a guiding role, so that the movement of the lifting cylinder 210 is more stable.
The lifting mechanism 200 further includes a top plate 240 and a buffer member 250, the top plate 240 is disposed at an end of the guide rod 220 away from the mounting plate 10, and the buffer member 250 is disposed on the frame 300 and abuts against the top plate 240. When the lifting cylinder 210 reaches the maximum stroke, the top plate 240 abuts against the tail end of the buffer member 250, so that the running speed of the lifting cylinder 210 can be gradually reduced, and the follow-up positioning mechanism 100 is prevented from being damaged due to rigid collision with a cover plate of the power battery B. The buffer member 250 plays a role of limiting and buffering. It can be understood that the number of the buffering members 250 is plural, specifically, 2 buffering members 250 may be provided, and the 2 buffering members 250 are respectively provided at two sides of the lifting cylinder 210, so that the top plate 240 is more balanced in stress. It should be noted that the installation height of the buffer member 250 can be set according to actual requirements to limit the maximum stroke of the lifting cylinder 210.
Referring to fig. 3 and 4, the servo positioning mechanism 100 includes a mounting plate 10, a first servo assembly 20, a transition plate 30, a second servo assembly 40, and a pressure plate 50. The mounting plate 10 is connected to a push rod of the elevating cylinder 210. The mounting plate 10, the transition plate 30 and the pressing plate 50 are sequentially stacked, the first follow-up assembly 20 is arranged between the mounting plate 10 and the transition plate 30 and can enable the transition plate 30 to slide along the X direction relative to the mounting plate 10, and the second follow-up assembly 40 is arranged between the transition plate 30 and the pressing plate 50 and can enable the pressing plate 50 to slide along the Y direction relative to the transition plate 30.
The lifting cylinder 210 of the upper positioning device drives the servo positioning mechanism 100 to descend to a proper height so as to position the cover plate of the power battery B, and the pressing plate 50 of the servo positioning mechanism 100 and the cover plate are kept in a pressing state. In the long-edge positioning process, the power battery B moves along the direction perpendicular to the length direction, namely the X direction, and due to the arrangement of the first follow-up assembly 20, the pressing plate 50 and the transition plate 30 can move along the X direction along with the power battery B relative to the mounting plate 10, so that the cover plate is effectively prevented from being scratched due to the relative displacement of the pressing plate 50 and the power battery B. Similarly, in the short side positioning process, the power battery B moves along the direction perpendicular to the width direction, i.e., the Y direction, and due to the arrangement of the second follow-up assembly 40, the pressing plate 50 can move along the Y direction along with the power battery B relative to the mounting plate 10, so that the cover plate is prevented from being scratched due to the relative displacement between the pressing plate 50 and the power battery B.
Specifically, referring to fig. 3 and 5, the first follower assembly 20 includes a plurality of guide rails 21 and a plurality of sliders 22, the sliders 22 are provided with sliding grooves matching with the guide rails 21, the guide rails 21 of the first follower assembly 20 are connected to the mounting plate 10, and the sliders 22 of the first follower assembly 20 are connected to the transition plate 30.
Referring to fig. 3 and fig. 6, the second follow-up assembly 40 includes a plurality of guide rails 41 and a plurality of sliding blocks 42, the sliding blocks 42 are provided with sliding grooves matching with the guide rails 41, the guide rails 41 of the second follow-up assembly 40 are connected to the transition plate 30, and the sliding blocks 42 of the second follow-up assembly 40 are connected to the pressing plate 50.
The pressing plate 50 includes a first pressing block 51 and a second pressing block 52 arranged at an interval, in other words, an avoiding space is formed between the first pressing block 51 and the second pressing block 52 to accommodate a protruding structure such as a pole provided on the cover plate of the power battery B.
Referring to fig. 5, the following positioning mechanism 100 further includes a first reset assembly 60, the first reset assembly 60 includes a guide shaft 61, a movable block 62, a stop block 63 and a spring 64, the guide shaft 61 extends along the X direction, the movable block 62 is disposed in the middle of the guide shaft 61 and fixedly connected to the transition plate 30, the stop block 63 is disposed between the mounting plate 10 and the pressing plate 50, the end of the guide shaft 61 is connected to the stop block 63, and the spring 64 is sleeved on the guide shaft 61 and located between the movable block 62 and the stop block 63. When the transition plate 30 and the pressing plate 50 move along the X direction relative to the mounting plate 10, the movable block 62 is driven by the transition plate 30 to move along the guide shaft 61, so as to extrude the spring 64 sleeved on the guide shaft 61, and the spring 64 stores elastic potential energy. After the positioning is finished, the lifting cylinder 210 is contracted, the pressing plate 50 is lifted, and the movable block 62 drives the transition plate 30 and the pressing plate 50 to reset under the elastic force action of the spring 64. The spring 64 may specifically be a compression spring.
Referring to fig. 6, the following positioning mechanism 100 further includes a second reset assembly 70, the second reset assembly 70 includes a plurality of elastic members 71, one end of each elastic member 71 is connected to the pressing plate 50, and the other end of each elastic member 71 is connected to the transition plate 30, and the elastic members 71 can be elastically deformed along the Y direction. When the pressing plate 50 moves in the Y direction with respect to the mounting plate 10 and the transition plate 30, the elastic member 71 is stretched, and the elastic member 71 stores elastic potential energy. After the positioning is completed, the lifting cylinder 210 is contracted, the pressing plate 50 is lifted, and the pressing plate 50 is restored to the state before the positioning by the elastic force of the elastic member 71. The elastic member 71 may be specifically an extension spring.
Referring to fig. 3 or fig. 4, the servo positioning mechanism 100 further includes a reference plate 80 and a plurality of differential heads 90, the reference plate 80 is disposed on a side of the pressure plate 50 facing the transition plate 30, the differential heads 90 are disposed on the transition plate 30, and a measuring end of the differential heads 90 abuts against the reference plate 80. The differential head 90 can directly read the relative displacement between the reference plate 80 and the transition plate 30 in the vertical direction, so as to adjust the levelness of the reference plate 80.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A follow-up positioning mechanism is characterized by comprising a mounting plate, a first follow-up component, a transition plate, a second follow-up component and a pressure plate, wherein the mounting plate, the transition plate and the pressure plate are sequentially stacked, the first follow-up component is arranged between the mounting plate and the transition plate and can enable the transition plate to slide along the X direction relative to the mounting plate, and the second follow-up component is arranged between the transition plate and the pressure plate and can enable the pressure plate to slide along the Y direction relative to the transition plate;
the first follow-up assembly and the second follow-up assembly respectively comprise a plurality of guide rails and a plurality of sliding blocks, sliding grooves matched with the guide rails are formed in the sliding blocks, the guide rails of the first follow-up assembly are connected to the mounting plate, the sliding blocks of the first follow-up assembly are connected to the transition plate, the guide rails of the second follow-up assembly are connected to the transition plate, and the sliding blocks of the second follow-up assembly are connected to the pressing plate.
2. The follow-up positioning mechanism according to claim 1, further comprising a first reset assembly, wherein the first reset assembly comprises a guide shaft, a movable block, a limiting block and a spring, the guide shaft extends along the X direction, the movable block penetrates through the middle of the guide shaft and is fixedly connected to the transition plate, the limiting block is arranged between the mounting plate and the pressing plate, the end portion of the guide shaft is connected to the limiting block, and the spring is sleeved on the guide shaft and is located between the movable block and the limiting block.
3. The follow-up positioning mechanism according to claim 1, further comprising a second reset assembly, wherein the second reset assembly comprises a plurality of elastic members, one end of each elastic member is connected to the pressure plate, the other end of each elastic member is connected to the transition plate, and each elastic member can elastically deform along the Y direction.
4. The follow-up positioning mechanism according to claim 1, further comprising a reference plate and a plurality of differential heads, wherein the reference plate is disposed on a side of the pressure plate facing the transition plate, the differential heads are disposed on the transition plate, and measuring ends of the differential heads abut against the reference plate.
5. The follower positioning mechanism of claim 1, wherein the pressure plate includes first and second pressure blocks spaced apart.
6. An upper positioning device, comprising the following positioning mechanism according to any one of claims 1 to 5, further comprising a frame and a lifting mechanism, wherein the lifting mechanism is disposed on the frame and used for driving the following positioning mechanism to ascend or descend.
7. The upper positioning device as claimed in claim 6, wherein the lifting mechanism comprises a plurality of guide rods and linear bearings, the linear bearings are disposed on the frame, and the guide rods are inserted into the linear bearings and connected to the mounting plate.
8. The upper positioning device as set forth in claim 7, wherein the lifting mechanism further comprises a top plate and a buffer member, the top plate is disposed at an end of the guide rod away from the mounting plate, and the buffer member is disposed on the frame and abuts against the top plate.
9. The upper positioning device as claimed in claim 6, wherein the lifting mechanism further comprises a lifting cylinder, a cylinder body of the lifting cylinder is mounted on the frame, and a push rod of the lifting cylinder is connected to the mounting plate.
10. A laser welding apparatus characterized by comprising the upper positioning device according to any one of claims 6 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023227906.7U CN214417939U (en) | 2020-12-28 | 2020-12-28 | Follow-up positioning mechanism, upper positioning device and laser welding equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023227906.7U CN214417939U (en) | 2020-12-28 | 2020-12-28 | Follow-up positioning mechanism, upper positioning device and laser welding equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214417939U true CN214417939U (en) | 2021-10-19 |
Family
ID=78053833
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023227906.7U Active CN214417939U (en) | 2020-12-28 | 2020-12-28 | Follow-up positioning mechanism, upper positioning device and laser welding equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214417939U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114346978A (en) * | 2021-11-25 | 2022-04-15 | 天津航天机电设备研究所 | Turnover assembly rack with lifting follower mechanism |
-
2020
- 2020-12-28 CN CN202023227906.7U patent/CN214417939U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114346978A (en) * | 2021-11-25 | 2022-04-15 | 天津航天机电设备研究所 | Turnover assembly rack with lifting follower mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108000401B (en) | Carrier capable of automatically compressing and maintaining pressure | |
| CN214417939U (en) | Follow-up positioning mechanism, upper positioning device and laser welding equipment | |
| CN109366196A (en) | A kind of automatic material lifting device | |
| CN108483337B (en) | Vehicle wheel base positioning four-column lifter | |
| CN220029287U (en) | Press mounting positioning mechanism and shell-entering press loading tool | |
| CN210908818U (en) | Turnover notebook computer assembling equipment with pressure maintaining function | |
| CN114852701B (en) | Battery stacking apparatus | |
| CN115193964B (en) | Press forming device for upper clamping piece of transformer core | |
| CN214769745U (en) | Tool jacking hold-down mechanism and laser cutting equipment | |
| CN112034221B (en) | Transmission mechanism for battery detection | |
| CN212540643U (en) | Automatic positioning and retaining device | |
| CN109465337B (en) | Stamping die for hole flanging processing of two ends of adjusting connecting rod for automobile chassis | |
| CN214684811U (en) | Clamp | |
| CN219025732U (en) | Stamping device that automobile plate shaping was used | |
| CN219903145U (en) | Anti-offset buffer type precision die | |
| CN110900144A (en) | Servo substep equipment mechanism of cylinder | |
| CN216758768U (en) | High-precision laminating and positioning jig | |
| CN216506458U (en) | High-precision injection mold frame | |
| CN219379387U (en) | Laser cutting device is used in bill-board production with location structure | |
| CN213002317U (en) | Nitrogen spring ejection device | |
| CN216226457U (en) | High-strength stamping die structure | |
| CN214078908U (en) | Copper sheet pressure equipment mechanism of bending | |
| CN211593283U (en) | All revolving racks of sealing strip framework | |
| CN217394717U (en) | Camera clamp | |
| CN220690042U (en) | Mast correction platform of rotary drilling rig |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220923 Address after: 518000 workshop 501, building 3, intelligent manufacturing center park, No. 12, Chongqing Road, Heping community, Fuhai street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Han's lithium battery intelligent equipment Co.,Ltd. Address before: 518000 No. 9988 Shennan Road, Nanshan District, Shenzhen, Guangdong Patentee before: HAN'S LASER TECHNOLOGY INDUSTRY GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right |