CN111975368A - Automatic machining and cutting system for copper bush - Google Patents
Automatic machining and cutting system for copper bush Download PDFInfo
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- CN111975368A CN111975368A CN202010827607.2A CN202010827607A CN111975368A CN 111975368 A CN111975368 A CN 111975368A CN 202010827607 A CN202010827607 A CN 202010827607A CN 111975368 A CN111975368 A CN 111975368A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/02—Machine tools for performing different machining operations
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Abstract
The invention discloses an automatic copper bush machining and cutting system which comprises a tubular copper bush blank and a plurality of cutting machine tools, wherein the plurality of cutting machine tools realize that one tubular copper bush blank enters two copper bushes and then exits through the cooperation of two mechanical arms, and the automatic copper bush machining system is quick in one-out-two-in-one-out and automatic in circulation. The invention avoids manual intervention, realizes an intelligent control system for processing two copper sleeves at one time, not only improves the processing efficiency, but also greatly improves the cutting precision.
Description
Technical Field
The invention relates to the technical field of special machining, in particular to an automatic machining and cutting system for a copper bush.
Background
The copper bush is a common part in modern industrial production and mainly plays a role in connection lubrication. The existing copper bush machining is that the assembly line machining of a plurality of workers, a plurality of stations and a plurality of machine tools involves the technical defects of many machining times, many positioning surfaces, low precision, long machining period and the like. How to realize the full-automatic intelligent production of the copper bush along with the development of the artificial intelligence technology, the improvement of the processing efficiency of the copper bush and the reduction of the processing error are the contents of the research of technical personnel in the field.
Disclosure of Invention
The invention provides the automatic processing and cutting system for the digital copper bush, which has the advantages of high processing efficiency, small cutting error and no manual control.
An automatic copper bush machining and cutting system comprises a tubular copper bush blank and a cutting machine tool, wherein the copper bush comprises an outer oil groove, an inner oil groove and a vertical oil groove, the tubular copper bush blank comprises two integrated copper bushes, and the tubular copper bush blank is arranged on a first material frame; the cutting machine tool comprises a first internal and external oil groove cutting machine tool, a second internal and external oil groove cutting machine tool, a third end face cutting machine tool, a fourth end face cutting machine tool and a fifth vertical oil groove cutting machine tool; the first internal and external oil groove cutting machine tool and the second internal and external oil groove cutting machine tool are matched with the first manipulator, and the third end surface cutting machine tool, the fourth end surface cutting machine tool and the fifth vertical oil groove cutting machine tool are matched with the second manipulator; a first conveying belt and a second conveying belt are arranged between the first manipulator and the second manipulator; the first manipulator is also matched with a second material rack, and the second material rack is matched with a copper sleeve; the first internal and external oil groove cutting machine tool and the second internal and external oil groove cutting machine tool are internally provided with two integrated copper sleeve cutting devices and a first electric three-jaw chuck; fillet cutting devices are arranged in the third end face cutting machine tool and the fourth end face cutting machine tool; and a first cutting device of the vertical oil groove is arranged in the fifth vertical oil groove cutting machine tool.
The fillet cutting device comprises a chuck seat and a motor arranged in the vertical direction, the motor drives a second electric three-jaw chuck in the vertical direction to rotate, the side edge of the electric three-jaw chuck is matched with a first cutter seat driven by a movable workbench, and a first cutting knife is installed on the first cutter seat.
The cutting device comprises a telescopic column, the telescopic column is connected with a cutting motor through a connecting arm, and the cutting motor drives a blade.
The first cutting device is controlled by a fifth vertical oil groove cutting machine tool to move horizontally, the first cutting device comprises a third electric three-jaw chuck, a copper sheet is arranged on the inner side of a clamping sheet of the third electric three-jaw chuck, and a position sensor and an air pipe are arranged on the side edge of the clamping sheet.
The first material rack and the second material rack respectively comprise a rack, a screw rod driven by a screw rod motor is arranged in the rack, the screw rod is in threaded connection with a material plate, evenly-arranged workpiece seats are arranged on the material plate, and two guide rails are connected to the bottom of the material plate.
The first mechanical arm and the second mechanical arm respectively comprise rotating arms, axial rotating seats are arranged on the rotating arms, and upper mechanical arms and lower mechanical arms are connected to the axial rotating seats respectively.
The upper manipulator and the lower manipulator comprise cylinders controlled by a first air inlet pipe and a second air inlet pipe, the cylinders are connected with cylinder ejector rods, the cylinder ejector rods are connected with horizontal pull rods, two ends of each horizontal pull rod are connected with oblique rods, the two oblique rods are respectively connected with sliding blocks moving along sliding grooves, and the sliding blocks are connected with manipulator mounting seats.
The conveying directions of the first conveying belt and the second conveying belt are opposite.
And an inspection table is arranged between the third end face cutting machine tool and the fifth vertical oil groove cutting machine tool and between the fourth end face cutting machine tool and the fifth vertical oil groove cutting machine tool.
The first material frame and the second material frame are located on the left side of the automatic copper sleeve machining and cutting system and are arranged up and down, the right sides of the first material frame and the second material frame are a first internal and external oil groove cutting machine tool and a second internal and external oil groove cutting machine tool which are arranged up and down to form a first cutting area, a first manipulator is arranged in the middle of the first cutting area, the right sides of the first internal and external oil groove cutting machine tool and the second internal and external oil groove cutting machine tool are a third end surface cutting machine tool and a second cutting area formed by the fourth end surface cutting machine tool which are arranged up and down, a second manipulator is arranged in the middle of the second cutting area, and a fifth vertical oil groove cutting machine tool is located.
From the above embodiments, it is apparent that the present invention has the following advantages:
1. according to the automatic copper bush machining and cutting system, the two integrated copper bush blanks are matched with each other through the cutting machine tool and the mechanical arm, so that an intelligent control system for realizing one-time machining of the two copper bushes is avoided being manually intervened, the machining efficiency is improved, and the cutting precision is greatly improved.
The manipulator structure of the invention realizes the technical effect that the manipulator extends out for twice clamping at one time through the upper manipulator and the lower manipulator.
The first cutting device provided by the invention can sense the position of the copper sleeve through the position sensor at the side edge of the clamping sheet, so that the processing precision of the copper sleeve is ensured, and the position offset of the copper sleeve is prevented.
Drawings
FIG. 1 is a schematic view of the overall structure of an automatic copper bush machining and cutting system according to the present invention;
FIG. 2 is a schematic structural view of a fourth end-face cutting machine according to the present invention;
FIG. 3 is a schematic structural view of a second internal and external oil groove cutting machine according to the present invention;
FIG. 4 is a schematic view of a fifth vertical oil groove cutting machine according to the present invention;
FIG. 5 is a schematic cross-sectional view of the copper sleeve according to the present invention;
FIG. 6 is a schematic structural view of a first material rack in the present invention;
fig. 7 is a schematic structural view of a first robot according to the present invention;
Detailed Description
As shown in fig. 1-7, an automatic copper bush machining and cutting system includes a tubular copper bush blank 23 and a cutting machine, the copper bush 28 includes an outer oil groove 35, an inner oil groove 33, and a vertical oil groove 34, the tubular copper bush blank 23 includes two integrated copper bushes 28, and the tubular copper bush blank 23 is mounted on a first material rack 1; the cutting machine tool comprises a first inner and outer oil groove cutting machine tool 8, a second inner and outer oil groove cutting machine tool 3, a third end face cutting machine tool 12, a fourth end face cutting machine tool 6 and a fifth vertical oil groove cutting machine tool 10.
The first material rack 1, the second material rack 2, the first internal and external oil groove cutting machine tool 8 and the second internal and external oil groove cutting machine tool 3 are preferably selected as structures to be matched with the first manipulator 4. The first material rack 1 and the second material rack 2 both comprise a rack 36, a screw rod 39 driven by a screw rod motor 40 is arranged in the rack 36, the screw rod 39 is in threaded connection with a material plate 38, the material plate 38 is provided with uniformly arranged workpiece seats 37, and the bottom of the material plate 38 is connected with two guide rails 51. The workpiece seat 37 of the first material rack 1 is matched with the tubular copper sleeve blank 23, and the workpiece seat 37 of the second material rack 2 is matched with the copper sleeve 28 which is processed.
The inspection table 11, the third end face cutting machine 12, the fourth end face cutting machine 6, and the fifth vertical oil groove cutting machine 10 are preferably configured to be associated with the second robot 9.
A first conveyor belt 7 and a second conveyor belt 5 are arranged between the first manipulator 4 and the second manipulator 9. The first conveyor belt 7 and the second conveyor belt 5 are conveyed in opposite directions, the first conveyor belt 7 is conveyed from the first robot 4 toward the second robot 9, and the second conveyor belt 5 is conveyed from the second robot 9 toward the first robot 4.
The first internal and external oil groove cutting machine tool 8 and the second internal and external oil groove cutting machine tool 3 are internally provided with a cutting device of two integrated copper sleeves 28 and a first electric three-jaw chuck 25, and the cutting device is matched with the first manipulator 4 to realize two integrated copper sleeves 28 and continuous processing performance on one machine tool. The cutting device comprises a telescopic column 19, the telescopic column 19 is connected with a cutting motor 21 through a connecting arm 20, and the cutting motor 21 drives a blade 22.
Fillet cutting devices are arranged in the third end face cutting machine 12 and the fourth end face cutting machine 6. The fillet cutting device comprises a chuck seat 17 and a motor 18 arranged in the vertical direction, the motor 18 drives a second electric three-jaw chuck 13 in the vertical direction to rotate, the side edge of the electric three-jaw chuck 13 is matched with a first tool apron 16 driven by a movable workbench 14, a first cutting tool 15 is installed on the first tool apron 16, fillet cutting for an outer oil groove 35 is realized through the movement of the first cutting tool 15 in the vertical plane, and the fillet cutting precision of the fillet cutting is higher than that of a common lathe.
The fifth vertical oil groove cutting machine 10 is provided with a first cutting device of the vertical oil groove 34 therein. The first cutting device is controlled by the fifth vertical oil groove cutting machine 10 to move horizontally, the first cutting device comprises a third electric three-jaw chuck 32, a copper sheet 29 is arranged on the inner side of a clamping sheet 30 of the third electric three-jaw chuck 32, and a position sensor 31 and an air pipe 33 are arranged on the side edge of the clamping sheet 30.
Preferably, the first manipulator 4 and the second manipulator 9 each include a rotation arm 47, the rotation arm 47 is provided with an axial rotation base 57, and the axial rotation base 57 is connected to an upper manipulator 54 and a lower manipulator 55, respectively. The upper manipulator 54 and the lower manipulator 55 both comprise air cylinders 46 controlled by a first air inlet pipe 48 and a second air inlet pipe 52, the air cylinders 46 are connected with air cylinder ejector rods 49, the air cylinder ejector rods 49 are connected with horizontal pull rods 45, two ends of each horizontal pull rod 45 are connected with inclined rods 44, the two inclined rods 44 are respectively connected with sliding blocks 43 moving along sliding grooves 42, the sliding blocks 43 are connected with manipulator mounting seats 41, and the air cylinders 46 are used for controlling the air cylinder ejector rods 49 to move back and forth to achieve the technical purpose that the first manipulator 4 and the second manipulator 9 grab workpieces. The manipulator mounting base 41 is connected with a manipulator claw 56, and a copper block 53 is mounted on the manipulator claw 56, so that a workpiece is prevented from being scratched.
In order to realize unmanned operation, the operation safety of the equipment is improved. The first material frame 1 and the second material frame 2 are located on the left side of the automatic copper sleeve machining and cutting system and are arranged up and down, the first material frame 1 and the second material frame 2 are a first internal and external oil groove cutting machine tool 8 on the right side, a second internal and external oil groove cutting machine tool 3 is arranged up and down to form a first cutting area, a first manipulator 4 is arranged in the middle of the first cutting area, the first internal and external oil groove cutting machine tool 8 is located on the right side of the second internal and external oil groove cutting machine tool 3 and is a third end face cutting machine tool 12, a second cutting area formed by up and down arrangement of a fourth end face cutting machine tool 6 is located in the middle of the second cutting area, a fifth vertical oil groove cutting machine tool 10 is located on the right side of the automatic copper sleeve machining and cutting system, a relatively closed annular machining area is formed, occupied area is reduced, and grabbing efficiency of the first manipulator 4.
The specific working process of the invention is as follows: the tubular copper sleeve blank 23 enters a working position through the first material frame 1, the first mechanical hand 4 clamps one tubular copper sleeve blank 23 and then puts the tubular copper sleeve blank 23 into a first electric three-jaw chuck 25 in a first inner and outer oil groove cutting machine tool 8 to clamp the tubular copper sleeve blank, the first mechanical hand 4 is loosened and separated, the first mechanical hand 4 puts the other tubular copper sleeve blank 23 into a first electric three-jaw chuck 25 in a second inner and outer oil groove cutting machine tool 3 to clamp the tubular copper sleeve blank, the first mechanical hand 4 is loosened and separated, meanwhile, the first electric three-jaw chuck 25 in the first inner and outer oil groove cutting machine tool 8 rotates to complete cutting of the outer circle, the inner circle, the outer circular arc groove 35, the inner circular arc groove 33, the end surface ring 24 and the outer end surface 50 of the tubular copper sleeve blank 23 by matching with a cutting tool 26, then the first electric three-jaw chuck 25 stops rotating, the upper mechanical hand 54 of the first mechanical hand 4 tightly clamps the outer side of the tubular copper sleeve blank 23, and a cutting motor 21 on the cutting device drives a blade 22 to, the upper manipulator 54 obtains a copper sleeve 28, then the first manipulator 4 rotates to be grabbed by the lower manipulator 55 to obtain the remaining tubular copper sleeve blank 23, the first electric three-jaw chuck 25 is loosened, the remaining tubular copper sleeve blank 23 is placed into the first electric three-jaw chuck 25 in an end face ring 24 manner to be clamped tightly after the first manipulator 4 rotates, and after the first manipulator 4 moves out, the copper sleeve 28 on the upper manipulator 54 is placed into the first conveying belt 7 to be grabbed by the second manipulator 9. Meanwhile, the first electric three-jaw chuck 25 in the first internal and external oil groove cutting machine tool 8 rotates to complete cutting of the outer circle, the inner circle and the outer arc groove 35, the inner arc groove 33 and the end face 59 of the remaining tubular copper bush blank 23 by matching with the cutting tool 26.
In the operation process, the first electric three-jaw chuck 25 in the second inner and outer oil groove cutting machine tool 3 rotates to complete cutting of the outer circle, the inner circle and the outer arc groove 35, the inner arc groove 33, the end surface ring 24 and the outer end surface 50 of the outer side of the tubular copper sleeve blank 23 by matching with the cutting tool 26, then the first electric three-jaw chuck 25 stops rotating, the upper manipulator 54 of the first manipulator 4 tightly grasps the outer side of the tubular copper sleeve blank 23, the cutting motor 21 on the cutting device drives the blade 22 to cut off the tubular copper sleeve blank 23 along the middle of the end surface ring 24, the manipulator 54 on the first manipulator obtains a copper sleeve 28, then the first manipulator 4 rotates to grasp the remaining tubular copper sleeve blank 23 by the lower manipulator 55, the first electric three-jaw chuck 25 is loosened, the remaining tubular copper sleeve blank 23 is placed into the first electric three-jaw chuck 25 by the end surface ring 24 after the first manipulator 4 rotates, and the first manipulator 4 is moved out, the copper bush 28 on the upper robot 54 is put on the first conveyor belt 7 to be transported and is grabbed by the second robot 9.
Then, the first mechanical arm 4 grabs the copper bush 28 formed by processing the remaining tubular copper bush blank 23 in the first internal and external oil groove cutting machine tool 8, the first conveying belt 7 is placed to convey the copper bush to be grabbed by the second mechanical arm 9, and then the first mechanical arm 4 grabs a new tubular copper bush blank 23 and places the tubular copper bush blank 23 in the first internal and external oil groove cutting machine tool 8 to form a processing cycle. Then the first mechanical hand 4 grabs the copper bush 28 formed by processing the remaining tubular copper bush blank 23 in the second internal and external oil groove cutting machine 3, the first conveying belt 7 is placed to convey the copper bush to be grabbed by the second mechanical hand 9, and then the first mechanical hand 4 grabs a new tubular copper bush blank 23 and places the tubular copper bush blank 23 in the second internal and external oil groove cutting machine 3 to form a processing cycle.
The second manipulator 9 grabs the copper bush 28 and then places the copper bush into the second electric three-jaw chuck 13 on the fourth end face cutting machine 6, and the fillet cutting of the outer oil groove 35 and the end face cutting formed after the end face ring 24 is cut by the blade 22 are realized through the movement of the first cutting knife 15 in the vertical plane, so that the copper bush is smoother. Meanwhile, the second manipulator 9 grabs another copper bush 28 and places the copper bush into the second electric three-jaw chuck 13 on the third end face cutting machine 12, and fillet cutting of the outer oil groove 35 and end face cutting formed after the end face ring 24 is cut by the blade 22 are achieved through movement of the first cutting knife 15 on a vertical plane, so that the copper bush is smoother. After the fourth end face cutting machine tool 6 finishes cutting, the second manipulator 9 grabs the copper bush 28 and puts the copper bush into the third electric three-jaw chuck 32 of the fifth vertical oil groove cutting machine tool 10 to clamp tightly, three position sensors 31 on the sides of three clamping pieces 30 in the putting process obtain three position data, the second manipulator 9 is controlled to adjust the putting position until the three position data are the same, the clamping work of the third electric three-jaw chuck 32 is finished, the accuracy of the mounting position is ensured, then the cutting processing of the vertical oil grooves 34 on the copper bush 28 is finished by the movable cutter 27, a finished product is formed after the processing, the second manipulator 9 grabs the second conveying belt 5, the first manipulator 4 grabs the second material frame 2, two blanks of the copper bush 28 are put into, and the first and second copper bush are put out, and the system is rapid, automatic and circular.
Claims (10)
1. The utility model provides a copper sheathing automatic processing cutting system, includes tubulose copper sheathing blank (23) and cutting machine, and copper sheathing (28) are including outer oil groove (35), interior oil groove (33), vertical oil groove (34), its characterized in that: the tubular copper sleeve blank (23) comprises two integrated copper sleeves (28), and the tubular copper sleeve blank (23) is arranged on the first material rack (1); the cutting machine comprises a first internal and external oil groove cutting machine (8), a second internal and external oil groove cutting machine (3), a third end surface cutting machine (12), a fourth end surface cutting machine (6) and a fifth vertical oil groove cutting machine (10); the first internal and external oil groove cutting machine tool (8), the second internal and external oil groove cutting machine tool (3) are matched with the first manipulator (4), the third end surface cutting machine tool (12), the fourth end surface cutting machine tool (6) and the fifth vertical oil groove cutting machine tool (10) are matched with the second manipulator (9); a first conveying belt (7) and a second conveying belt (5) are arranged between the first manipulator (4) and the second manipulator (9); the first manipulator (4) is also matched with a second material rack (2), and the second material rack (2) is matched with a copper sleeve (28); the first internal and external oil groove cutting machine tool (8) and the second internal and external oil groove cutting machine tool (3) are internally provided with two integrated copper sleeve (28) cutting devices and a first electric three-jaw chuck (25); fillet cutting devices are arranged in the third end face cutting machine tool (12) and the fourth end face cutting machine tool (6); and a first cutting device of a vertical oil groove (34) is arranged in the fifth vertical oil groove cutting machine tool (10).
2. The automatic machining and cutting system for the copper bush according to claim 1, characterized in that: fillet cutting device include motor (18) that chuck seat (17) and vertical direction set up, the electronic three-jaw chuck (13) of second of motor (18) drive vertical direction is rotatory, electronic three-jaw chuck (13) side cooperation shift table (14) driven first blade holder (16), install first cutting knife (15) on first blade holder (16).
3. The automatic machining and cutting system for the copper bush according to claim 1, characterized in that: the cutting device comprises a telescopic column (19), the telescopic column (19) is connected with a cutting motor (21) through a connecting arm (20), and the cutting motor (21) drives a blade (22).
4. The automatic machining and cutting system for the copper bush according to claim 1, characterized in that: the first cutting device is controlled by a fifth vertical oil groove cutting machine tool (10) to move horizontally, the first cutting device comprises a third electric three-jaw chuck (32), a copper sheet (29) is arranged on the inner side of a clamping sheet (30) of the third electric three-jaw chuck (32), and a position sensor (31) and an air pipe (33) are arranged on the side edge of the clamping sheet (30).
5. The automatic machining and cutting system for the copper bush according to claim 1, characterized in that: the first material rack (1) and the second material rack (2) both comprise a rack (36), a screw rod (39) driven by a screw rod motor (40) is arranged in the rack (36), the screw rod (39) is in threaded connection with a material plate (38), uniformly arranged workpiece seats (37) are arranged on the material plate (38), and two guide rails (51) are connected to the bottom of the material plate (38).
6. The automatic machining and cutting system for the copper bush according to claim 1, characterized in that: the first mechanical arm (4) and the second mechanical arm (9) comprise rotating arms (47), axial rotating seats (57) are arranged on the rotating arms (47), and an upper mechanical arm (54) and a lower mechanical arm (55) are connected to the axial rotating seats (57) respectively.
7. The automatic machining and cutting system for the copper bush according to claim 6, wherein: go up manipulator (54) and lower manipulator (55) all include cylinder (46) of first intake pipe (48) and second intake pipe (52) control, cylinder ejector pin (49) are connected in cylinder (46), horizontal pull rod (45) is connected in cylinder ejector pin (49), horizontal pull rod (45) both ends all are connected with down tube (44), slider (43) along spout (42) motion are connected respectively in two down tube (44), manipulator mount pad (41) is connected in slider (43).
8. The automatic machining and cutting system for the copper bush according to claim 1, characterized in that: the conveying directions of the first conveying belt (7) and the second conveying belt (5) are opposite.
9. The automatic machining and cutting system for the copper bush according to claim 1, characterized in that: and an inspection table (11) is arranged between the third end face cutting machine tool (12) and the fifth vertical oil groove cutting machine tool (10) and between the fourth end face cutting machine tool (6) and the fifth vertical oil groove cutting machine tool (10).
10. The automatic machining and cutting system for the copper bush according to claim 1, characterized in that: first material frame (1), second material frame (2) be located copper sheathing automatic processing cutting system left side and arrange from top to bottom, first material frame (1), second material frame (2) right side are first interior oil groove cutting machine tool (8) in the inside and outside, second interior oil groove cutting machine tool (3) are arranged from top to bottom and are formed first cutting area, be first manipulator (4) in the middle of the first cutting area, first interior oil groove cutting machine tool (8) in the outside, second interior oil groove cutting machine tool (3) right side is third terminal surface cutting machine tool (12), the second cutting area that fourth terminal surface cutting machine tool (6) were arranged from top to bottom and are formed, be second manipulator (9) in the middle of the second cutting area, fifth vertical oil groove cutting machine tool (10) are located copper sheathing automatic processing cutting system right side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010827607.2A CN111975368A (en) | 2020-08-17 | 2020-08-17 | Automatic machining and cutting system for copper bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010827607.2A CN111975368A (en) | 2020-08-17 | 2020-08-17 | Automatic machining and cutting system for copper bush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111975368A true CN111975368A (en) | 2020-11-24 |
Family
ID=73434569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010827607.2A Pending CN111975368A (en) | 2020-08-17 | 2020-08-17 | Automatic machining and cutting system for copper bush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111975368A (en) |
-
2020
- 2020-08-17 CN CN202010827607.2A patent/CN111975368A/en active Pending
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Address after: 311800 No.28, Jiangong East Road, Taozhu street, Zhuji City, Shaoxing City, Zhejiang Province Applicant after: Zhejiang cangen Intelligent Technology Co.,Ltd. Address before: 311800 No.28, Jiangong East Road, Taozhu street, Zhuji City, Shaoxing City, Zhejiang Province Applicant before: ZHEJIANG CAIGEN INTELLIGENT TECHNOLOGY Co.,Ltd. |
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Application publication date: 20201124 |
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