CN208879948U - A kind of welding fixture equipment - Google Patents

A kind of welding fixture equipment Download PDF

Info

Publication number
CN208879948U
CN208879948U CN201821375917.XU CN201821375917U CN208879948U CN 208879948 U CN208879948 U CN 208879948U CN 201821375917 U CN201821375917 U CN 201821375917U CN 208879948 U CN208879948 U CN 208879948U
Authority
CN
China
Prior art keywords
bottom plate
chuck component
collet
plate
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
Application number
CN201821375917.XU
Other languages
Chinese (zh)
Inventor
王立影
杨虹
姚晓春
陈晓婷
王建军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SAIC General Motors Corp Ltd
Original Assignee
SAIC General Motors Corp Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SAIC General Motors Corp Ltd filed Critical SAIC General Motors Corp Ltd
Priority to CN201821375917.XU priority Critical patent/CN208879948U/en
Application granted granted Critical
Publication of CN208879948U publication Critical patent/CN208879948U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Resistance Welding (AREA)

Abstract

The utility model discloses a kind of welding fixture equipment, including round turntable and the first grip device;First grip device includes the first bottom plate, the first chuck component, the second chuck component and bracket;First bottom plate is mounted on round turntable;First chuck component is mounted on the first bottom plate, is equipped with guide rail on the first bottom plate, and slide plate is equipped on guide rail, and slide plate is slidably connected with guide rail, and bracket is mounted on slide plate;It is provided between the first bottom plate and slide plate for driving slide plate to drive cylinder along the first level that guide rail slides;The first perpendicular drive cylinder is also equipped on bracket, the telescopic direction of the first vertical cylinder is vertical with the first bottom plate;Second chuck component is connect by mounting plate with the output end of the first perpendicular drive cylinder.Welding fixture equipment disclosed by the utility model, welding collet can be with flexible modulation position, and can expand the scope of application to the clamping product of welding post, degree of flexibility height, improve welding quality.

Description

A kind of welding fixture equipment
Technical field
The utility model relates to automobile tail gate technical field of welding equipment more particularly to a kind of welding fixture equipment.
Background technique
The application of rear cover laser soldering connection technique at present includes rear cover outside plate upper plate, outside mainly for three-chip type rear cover Plate and outside plate lower plate in plate, tooling are positioned for three part twice weld seams and ensure that part is bonded.But for MPV vehicle Type, is designed as back holding door form, and back holding door exterior panel includes back holding door outside plate upper plate, plate and outside plate lower plate and B lamp in outside plate Bracket, number of parts increase, and laser is brazed matching face from upper outside plate and middle laser soldering and lower outside plate and upper outside plate sub-unit Laser soldering increases laser between lower outside plate and two panels rear light cover and is brazed, for tail light support part and lower outside plate binding face It is required that improving.
Welding equipment in the prior art, flexibility ratio is not high enough, the narrow range of welding product.
Utility model content
The purpose of this utility model is to provide a kind of welding fixture equipment, and flexibility ratio is high, improve the extensive of application The quality of property and welding.
Technical solutions of the utility model provide a kind of welding fixture equipment, including round turntable and installation are on the turntable The first grip device;
First grip device includes the first bottom plate, the first chuck component, the second chuck component and bracket;
First bottom plate is mounted on the round turntable;
First chuck component is mounted on first bottom plate, guide rail is equipped on first bottom plate, in institute It states and slide plate is installed on guide rail, the slide plate is slidably connected with the guide rail, and the bracket is mounted on the slide plate;
It is provided between first bottom plate and the slide plate for driving the slide plate to slide along the guide rail First level drives cylinder;
Be also equipped with the first perpendicular drive cylinder on the bracket, the telescopic direction of first vertical cylinder with it is described First bottom plate is vertical;
Second chuck component is connect by mounting plate with the output end of the first perpendicular drive cylinder.
Further, first chuck component includes multiple first movement collets and multiple first welding collets;
The multiple first movement collet is evenly arranged on the two sides of the guide rail, and the multiple first welding collet is evenly arranged on institute State one end of guide rail.
Further, it is also set up on first bottom plate there are two the first positioning pin, two first positioning pins divide Not Wei Yu two sides the first movement collet inside;
The second perpendicular drive cylinder is connected between first bottom plate and first positioning pin, described second is vertical The pedestal of driving cylinder is mounted on first bottom plate, and first positioning pin is mounted on the second perpendicular drive cylinder On output end;
The telescopic direction of the second perpendicular drive cylinder is vertical with first bottom plate.
Further, two limited blocks for limiting to the slide plate are provided on first bottom plate;
Two limited blocks are located at the two sides of the guide rail;
Rotary cylinder is connected between first bottom plate and the limited block, the pedestal of the rotary cylinder is mounted on On first bottom plate, the limited block is mounted on the output end of the rotary cylinder.
Further, it is provided with the first inductor on first bottom plate, is provided with the second induction on the bracket Device.
Further, the second grip device is additionally provided on the round turntable;
Second grip device and first grip device are oppositely disposed at the central axis of the round turntable Two sides;
Second grip device includes the second bottom plate, third chuck component and the 4th chuck component;
Second bottom plate is mounted on the round turntable;
The third chuck component is mounted on second bottom plate, and the third chuck component is located at second bottom plate The upper side far from first grip device;
4th chuck component is slidably connected with second bottom plate, and the 4th chuck component is located at second bottom Close to the side of first grip device on plate, it is provided with and is used between second bottom plate and the 4th chuck component The the second horizontal drive cylinder for driving the 4th chuck component to move horizontally.
Further, it is provided with clamp gripper unit on second bottom plate, the clamp gripper unit and described the Four chuck components are oppositely arranged at the two sides of the third chuck component;
4th chuck component includes multiple 4th collets, and each 4th collet further includes having the clamping of the 4th collet Block;
Cylinder connection is vertically driven by third between the 4th collet gripping block and the 4th collet.
Further, it is also set up on second bottom plate there are two third positioning pin, two third positioning pins divide It is not mounted on second bottom plate by two the 4th perpendicular drive cylinders;
It is also set up on second bottom plate there are two the 4th positioning pin, two the 4th positioning pins are located at described in two Between third positioning pin, two the 4th positioning pins pass through two the 5th perpendicular drive cylinders respectively and are mounted on second bottom On plate.
Further, the third chuck component includes multiple third collets, is divided on two third collets wherein It is not provided with third inductor, is respectively arranged with the 4th inductor on two the 4th collets wherein.
Further, the both sides of the edge on second bottom plate are additionally provided with the 5th collet, the third collet and institute The 4th collet is stated to be located between described two 5th collets in two sides.
By adopting the above technical scheme, it has the following beneficial effects:
Welding fixture equipment provided by the utility model, welding collet can be with flexible modulation position, and can be with butt welding The clamping product of station is connect, degree of flexibility is high, has expanded the scope of application, has improved welding quality.
Detailed description of the invention
Fig. 1 is welding fixture equipment top view provided by the utility model;
Fig. 2 is the perspective view of the first grip device;
Fig. 3 is the main view of the first grip device;
Fig. 4 is the perspective view of the second grip device;
Fig. 5 is the top view of the second grip device.
Specific embodiment
Further illustrate specific embodiment of the present utility model with reference to the accompanying drawing.Wherein identical components phase Same appended drawing reference indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "upper" and "lower" refers to that the direction in attached drawing, word "inner" and "outside" refer respectively to the side towards or away from geometric center of specific component To.
The horizontal direction or horizontal drive cylinder mentioned in the utility model are the direction parallel with the plane of round turntable Or the cylinder that telescopic direction is parallel with the plane of round turntable.The vertical direction or perpendicular drive cylinder mentioned in the utility model For the direction vertical with the plane of round turntable or the telescopic direction cylinder vertical with the plane of round turntable.
As shown in Figure 1-3, the welding fixture equipment that an embodiment of the present invention provides, including round turntable 1 and installation The first grip device 2 on turntable.
First grip device 2 includes the first bottom plate 21, the first chuck component 22, the second chuck component 23 and bracket 24.
First bottom plate 21 is mounted on round turntable 1.
First chuck component 22 is mounted on the first bottom plate 21, guide rail 210 is equipped on the first bottom plate 21, in guide rail Slide plate 25 is installed, slide plate 25 is slidably connected with guide rail 210, and bracket 24 is mounted on slide plate 25 on 210.
The first level for driving slide plate 25 to slide along guide rail 210 is provided between the first bottom plate 21 and slide plate 25 Drive cylinder 251.
The first perpendicular drive cylinder 241, the telescopic direction and first of the first vertical cylinder 241 are also equipped on bracket 24 Bottom plate 21 is vertical.
Second chuck component 23 is connect by mounting plate 231 with the output end of the first perpendicular drive cylinder 241.
First grip device 2 is mainly used for welding the upper outside plate assembly of the back holding door of MVP and middle.
First chuck component 22 is mainly used for clamping outside plate assembly to welding post, and the second chuck component 23 is mainly used for Piece is to welding post in clamping, to complete upper outside plate assembly and middle welding.
Second chuck component 23 can carry out front and back up and down adjustment.
By the way that the first bottom plate 21 to be mounted on round turntable 1, progress can be rotated with the rotation of round turntable 1 Feeding or welding position are adjusted.
First chuck component 22 is mounted on the first bottom plate 21, outside plate assembly can be positioned.Specific its passes through gas Cylinder driving, details are not described herein.
Two parallel guide rails 210 are mounted on the first bottom plate 21, and the middle part for being respectively facing round turntable 1 extends.It is sliding Plate 25 is mounted on guide rail 210, and between the two to be slidably connected, slide plate 25 can slide realization at the first bottom on guide rail 210 Position in the plane of plate 21 is adjusted.First level driving cylinder 251 is mounted between the first bottom plate 21 and slide plate 251, bottom Seat is connect with the first bottom plate 21, and output end is connect with slide plate 25.Certainly, the output end of first level driving cylinder 251 can also Directly to be connect with bracket 24.First level driving cylinder 251 is for driving slide plate 25 to slide along guide rail 210.First level Drive the telescopic direction of cylinder 251 parallel with the plane of the first bottom plate 21.
Bracket 24 is fixedly mounted on slide plate 25, can be moved with the movement of slide plate 25.
The first perpendicular drive cylinder 241, the first perpendicular drive 241 telescopic direction of cylinder and first are provided on bracket 24 The plane of bottom plate 21 is vertical.
Its pedestal is fixedly mounted on bracket 24, and mounting plate 231 is equipped on output end, and the second chuck component 23 is fixed It is mounted on mounting plate 231, so that the second chuck component 23 had not only been able to achieve the adjusting of horizontal direction, but also is able to achieve Vertical Square To adjusting, degree of flexibility is high, has expanded the scope of application, has improved welding quality.
In use, first passing through the first chuck component 22 clamps outside plate assembly, clamped by the second chuck component 23 Middle, then cylinder 251 and the first perpendicular drive cylinder 231 is driven to make middle to be moved to Welder by adjusting first level Position, then welds upper outside plate assembly and middle clamping, reduces welding gap.
Preferably, as Figure 2-3, the first chuck component 22 includes multiple first movement collets 221 and multiple first welderings Connect collet 222.
Multiple first movement collets 221 are evenly arranged on the two sides of guide rail 210, and multiple first welding collets 222 are evenly arranged on guide rail 210 one end.
First movement collet 221 is used for for the upper outside plate assembly of mobile or positioning to welding post, the first welding collet 222 The upper outside plate assembly of welding post and middle are clamped, to carry out subsequent welding.
Multiple first welding collets 222 are distributed in the one end at edge of the guide rail 210 close to round turntable 1.
Preferably, as Figure 2-3, being also set up on the first bottom plate 21 there are two the first positioning pin 26, two first fixed Position pin 26 is located at the inside of the first movement collet 221 of two sides.
The second perpendicular drive cylinder 261, the second perpendicular drive are connected between the first bottom plate 21 and the first positioning pin 26 The pedestal of cylinder 261 is mounted on the first bottom plate 21, and the first positioning pin 26 is mounted on the output end of the second perpendicular drive cylinder 261 On.The telescopic direction of second perpendicular drive cylinder 261 is vertical with the first bottom plate 21.
Second perpendicular drive cylinder 261 is for driving the first about 26 positioning pin flexible to determine upper outside plate assembly Position.
Upper outside plate assembly is positioned in use, first passing through the first positioning pin 26, then passes through first movement collet again 221 clamp outside plate assembly.
Preferably, as Figure 2-3, two limited blocks for limiting to slide plate 25 are provided on the first bottom plate 21 27。
Two limited blocks 27 are located at the two sides of guide rail 210.
Rotary cylinder 271 is connected between the first bottom plate 21 and limited block 27, the pedestal of rotary cylinder 271 is mounted on On one bottom plate 21, limited block 27 is mounted on the output end of rotary cylinder 27.
It drives limited block 27 to swing by rotary cylinder 271, slide plate 25 is limited, it is avoided to take off from guide rail 210 From improving security performance.
Preferably, as Figure 2-3, the first inductor 28 being provided on the first bottom plate 21, is provided on bracket 24 Second inductor 29.Whether in place first inductor 28 for monitoring outside plate assembly, and the second inductor 29 is for piece in monitoring Whether in place, part neglected loading misloading is avoided.
Preferably, as illustrated in figures 4-5, the second grip device 3 is additionally provided on round turntable 1.
Second grip device 3 and the first grip device 2 are oppositely disposed at the two sides of the central axis of round turntable 1.
Second grip device 3 includes the second bottom plate 31, third chuck component 32 and the 4th chuck component 33.
Second bottom plate 31 is mounted on round turntable 1.
Third chuck component 32 is mounted on the second bottom plate 31, and third chuck component 32 is located on the second bottom plate 31 far from the The side of one grip device 2.
4th chuck component 33 is slidably connected with the second bottom plate 31, and the 4th chuck component 33 is located at close on the second bottom plate 31 The side of first grip device 2.
It is provided between the second bottom plate 31 and the 4th chuck component 33 for driving the 4th chuck component 33 to move horizontally The second horizontal drive cylinder 330.
Second grip device 3 is for welding outside plate assembly and lower outside plate.
For third chuck component 32 for clamping outside plate assembly to welding post, the 4th chuck component 33 is lower outer for clamping Then plate welds upper outside plate assembly and lower outside plate to welding post.
It can be successively total by upper outside plate by the first grip device 2 and the second grip device 3 by rotating round turntable 1 At, middle and lower outside plate weld together, complete the welding of the back holding door of MPV.
The 4th chuck component 33 can be mounted on corresponding sliding rail, by the way that sliding rail is arranged on the second bottom plate 31 Four chuck components 33 are slidably connected with the second bottom plate 31, carry out position adjusting.
The telescopic direction of second horizontal drive cylinder 330 is parallel with the second bottom plate 31, and pedestal is arranged in the second bottom plate 31 On, output end is connected with the 4th chuck component 33, so that the 4th chuck component 33 adjusting position in the horizontal direction is driven, it is mobile Lower outside plate is to welding post.
Third chuck component 32 includes multiple third collets 321, the corresponding positions being arranged on the second bottom plate 31 as needed It sets.
Preferably, as illustrated in figures 4-5, clamp gripper unit 34, clamp gripper unit 34 are provided on the second bottom plate 31 The two sides of third chuck component 32 are oppositely arranged at the 4th chuck component 33.Clamp gripper unit 34 is in welding, to upper Outside plate assembly is clamped and is supported.
4th chuck component 33 includes multiple 4th collets 331, and each 4th collet 331 further includes having the clamping of the 4th collet Block 332.
Cylinder 333 is vertically driven by third between 4th collet gripping block 332 and the 4th collet 331 to connect.
Cylinder 333, which is vertically driven, by third drives the 4th collet gripping block 332 to move up and down, under welding post Outside plate compresses.The telescopic direction that cylinder 333 is vertically driven in third is vertical with the second bottom plate 31.
Preferably, as illustrated in figures 4-5, being also set up on the second bottom plate 31 there are two third positioning pin 36, two thirds are fixed Position pin 36 is mounted on the second bottom plate 31 by two the 4th perpendicular drive cylinders 361 respectively.
It is also set up on the second bottom plate 31 there are two the 4th positioning pin 37, two the 4th positioning pins 37, which are located at two thirds, to be determined Between the pin 36 of position, two the 4th positioning pins 37 are mounted on second by two the 5th perpendicular drive cylinder (not shown)s respectively On bottom plate 31.
Two third positioning pins 36 are for positioning upper outside plate assembly, later again by third chuck component 32 Third collet 321 clamps upper outside plate assembly to welding post.
The telescopic direction of 4th perpendicular drive cylinder 361 is vertical with the second bottom plate 31, is used to drive third positioning pin 36 Lift adjustment.
Then two the 4th positioning pins 37 are again determined lower outside plate by the 4th collet 331 for positioning to lower outside plate Position is good, then lower outside plate is moved to welding post by the second horizontal air cylinder 330, by the upper outside plate assembly of welding post and lower outside plate Compression is welded, and gap is reduced.
Preferably, as illustrated in figures 4-5, third chuck component 32 includes multiple third collets 321, two thirds are pressed from both sides wherein Third inductor 38 is respectively arranged on first 321.
The 4th inductor 39 is respectively arranged on two the 4th collets 331 wherein.
Whether in place third inductor 38 for monitoring outside plate assembly, and whether the 4th inductor 39 is for monitoring lower outside plate In place, automated job is realized.
Preferably, as illustrated in figures 4-5, the both sides of the edge on the second bottom plate 31 are additionally provided with the 5th collet 35, third folder First 321 and the 4th collet 331 be located between the 5th collet 35 of two sides two.
5th collet 35 completes entire MPV back holding door welding for clamping rear light cover.
As needed, above-mentioned each technical solution can be combined, to reach best-of-breed technology effect.
Above-described is only the principles of the present invention and preferred embodiment.It should be pointed out that for the general of this field For logical technical staff, on the basis of the utility model principle, several other modifications can also be made, also should be regarded as practical Novel protection scope.

Claims (10)

1. a kind of welding fixture equipment, which is characterized in that including the first fixture dress of round turntable and installation on the turntable It sets;
First grip device includes the first bottom plate, the first chuck component, the second chuck component and bracket;
First bottom plate is mounted on the round turntable;
First chuck component is mounted on first bottom plate, is equipped with guide rail on first bottom plate, is led described Slide plate is installed, the slide plate is slidably connected with the guide rail, and the bracket is mounted on the slide plate on rail;
First for driving that the slide plate slides along the guide rail is provided between first bottom plate and the slide plate Horizontal drive cylinder;
It is also equipped with the first perpendicular drive cylinder, the telescopic direction of first vertical cylinder and described first on the bracket Bottom plate is vertical;
Second chuck component is connect by mounting plate with the output end of the first perpendicular drive cylinder.
2. welding fixture equipment according to claim 1, which is characterized in that first chuck component includes multiple first Movable chuck and multiple first welding collets;
The multiple first movement collet is evenly arranged on the two sides of the guide rail, and the multiple first welding collet is evenly arranged on described lead One end of rail.
3. welding fixture equipment according to claim 2, which is characterized in that there are two being also set up on first bottom plate First positioning pin, two first positioning pins are located at the inside of the first movement collet of two sides;
The second perpendicular drive cylinder, second perpendicular drive are connected between first bottom plate and first positioning pin The pedestal of cylinder is mounted on first bottom plate, and first positioning pin is mounted on the output of the second perpendicular drive cylinder On end;
The telescopic direction of the second perpendicular drive cylinder is vertical with first bottom plate.
4. welding fixture equipment according to claim 3, which is characterized in that be provided on first bottom plate for pair Two limited blocks of the slide plate limit;
Two limited blocks are located at the two sides of the guide rail;
Rotary cylinder is connected between first bottom plate and the limited block, the pedestal of the rotary cylinder is mounted on described On first bottom plate, the limited block is mounted on the output end of the rotary cylinder.
5. welding fixture equipment according to claim 1, which is characterized in that be provided with the first sense on first bottom plate Device is answered, is provided with the second inductor on the bracket.
6. welding fixture equipment according to any one of claims 1-5, which is characterized in that on the round turntable also It is provided with the second grip device;
Second grip device and first grip device are oppositely disposed at the two sides of the central axis of the round turntable;
Second grip device includes the second bottom plate, third chuck component and the 4th chuck component;
Second bottom plate is mounted on the round turntable;
The third chuck component is mounted on second bottom plate, and the third chuck component is located on second bottom plate far Side from first grip device;
4th chuck component is slidably connected with second bottom plate, and the 4th chuck component is located on second bottom plate Close to the side of first grip device, it is provided between second bottom plate and the 4th chuck component for driving The second horizontal drive cylinder that 4th chuck component moves horizontally.
7. welding fixture equipment according to claim 6, which is characterized in that be provided with holing clip on second bottom plate Head unit, the clamp gripper unit and the 4th chuck component are oppositely arranged at the two sides of the third chuck component;
4th chuck component includes multiple 4th collets, and each 4th collet further includes having the 4th collet gripping block;
Cylinder connection is vertically driven by third between the 4th collet gripping block and the 4th collet.
8. welding fixture equipment according to claim 7, which is characterized in that there are two being also set up on second bottom plate Third positioning pin, two third positioning pins pass through two the 4th perpendicular drive cylinders respectively and are mounted on second bottom plate On;
It is also set up on second bottom plate there are two the 4th positioning pin, two the 4th positioning pins are located at two thirds Between positioning pin, two the 4th positioning pins pass through two the 5th perpendicular drive cylinders respectively and are mounted on second bottom plate On.
9. welding fixture equipment according to claim 7, which is characterized in that the third chuck component includes multiple thirds Collet is respectively arranged with third inductor on two third collets wherein;
The 4th inductor is respectively arranged on two the 4th collets wherein.
10. welding fixture equipment according to claim 9, which is characterized in that the both sides of the edge on second bottom plate It is additionally provided with the 5th collet, the third collet and the 4th collet are located between described two 5th collets in two sides.
CN201821375917.XU 2018-08-24 2018-08-24 A kind of welding fixture equipment Active CN208879948U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821375917.XU CN208879948U (en) 2018-08-24 2018-08-24 A kind of welding fixture equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821375917.XU CN208879948U (en) 2018-08-24 2018-08-24 A kind of welding fixture equipment

Publications (1)

Publication Number Publication Date
CN208879948U true CN208879948U (en) 2019-05-21

Family

ID=66509953

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821375917.XU Active CN208879948U (en) 2018-08-24 2018-08-24 A kind of welding fixture equipment

Country Status (1)

Country Link
CN (1) CN208879948U (en)

Similar Documents

Publication Publication Date Title
CN206105206U (en) Welding set for radiator
CN105537745B (en) Multiple spot copolar puppet's welder
CN110039158A (en) A kind of welder and welding procedure of flat wire armature
CN207205716U (en) A kind of adaptive steel-pipe welding device
CN202861593U (en) Horizontal type circular seam welder
CN218426482U (en) Air bag type welding equipment
CN206169560U (en) But turnover welding anchor clamps
CN208879948U (en) A kind of welding fixture equipment
CN106141431A (en) A kind of electric kettle back welding connection device
CN220330462U (en) Intersecting line welding device
CN103921048B (en) A kind of vehicle side localization method and device
CN205967720U (en) Cell -phone camera welding machine
CN210649241U (en) Welding tool for machining automobile swing arm
CN208913351U (en) A kind of handling equipment and production line
CN209491599U (en) A kind of bull screen frame polishing special plane
CN218503650U (en) Aluminum product processing fixed-position welding device
CN206982060U (en) A kind of vehicle body soldering production line clamping device
CN114535756B (en) Intelligent welding seam recognition and tracking equipment guided by vision
CN213969662U (en) Double-station welding machine
CN206105125U (en) Radiator welding set is used to light card
CN211465310U (en) Welding device for processing switching power supply chip
CN203526824U (en) Machine special for automatic spot welding
CN210651967U (en) Five metals detection automatic production line is inserted to pad pasting
CN106271077A (en) New forms of energy electrode laser processing unit (plant) and processing method
CN208662922U (en) A kind of welder and its fixture

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant