CN110450394B - Automatic bending machine of flexible circuit board - Google Patents
Automatic bending machine of flexible circuit board Download PDFInfo
- Publication number
- CN110450394B CN110450394B CN201910593492.2A CN201910593492A CN110450394B CN 110450394 B CN110450394 B CN 110450394B CN 201910593492 A CN201910593492 A CN 201910593492A CN 110450394 B CN110450394 B CN 110450394B
- Authority
- CN
- China
- Prior art keywords
- circuit board
- flexible circuit
- bending machine
- frame
- sliding
- 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.)
- Expired - Fee Related
Links
- 238000005452 bending Methods 0.000 title claims abstract description 55
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 239000007787 solid Substances 0.000 claims abstract description 8
- 238000003825 pressing Methods 0.000 claims description 27
- 238000003466 welding Methods 0.000 claims description 17
- 238000005056 compaction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004642 Polyimide Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229920006267 polyester film Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/02—Bending or folding
- B29C53/04—Bending or folding of plates or sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C53/00—Shaping by bending, folding, twisting, straightening or flattening; Apparatus therefor
- B29C53/80—Component parts, details or accessories; Auxiliary operations
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/0011—Working of insulating substrates or insulating layers
- H05K3/0044—Mechanical working of the substrate, e.g. drilling or punching
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
- Supply And Installment Of Electrical Components (AREA)
Abstract
The invention discloses an automatic bending machine for a flexible circuit board, which structurally comprises a bending machine body, a control box, a solid suction and ejection assisting device, a base plate and supporting legs, wherein the bending machine body is of a rectangular structure, the control box is arranged above the bending machine body and is electrically connected with the bending machine body, and the solid suction and ejection assisting device is arranged in the middle of the bending machine body and is in sliding connection with the bending machine body. The invention can fix the flexible circuit board by using a gas suction mode through the arranged sucking and pushing auxiliary device, solves the defect that the flexible circuit board with limited shape and size can only be fixed by fixing through the model groove in the traditional technology, and can be pushed up under the flexible circuit board by arranging the pushing mechanisms which are distributed with the gas suction holes alternately, thereby solving the problem that the flexible circuit board is not convenient to bend due to thinness of the flexible circuit board and realizing the bending of the flexible circuit boards with various specifications.
Description
Technical Field
The invention relates to the field of flexible circuit board processing, in particular to an automatic bending machine for a flexible circuit board.
Background
The flexible printed circuit board is a flexible printed circuit board with high reliability and excellent performance, which is made of polyimide or polyester film as a base material, and an automatic bending machine for the flexible printed circuit board is needed in the processing process, but the automatic bending machine for the flexible printed circuit board in the prior art still has the following defects:
in the automatic bending machine for the flexible circuit board in the prior art, the flexible circuit board is placed on the pushing plate to realize feeding of the flexible circuit board, but the flexible circuit board has inertia force to cause deviation when the pushing plate is started and stopped; or realize fixedly through the model recess, nevertheless because of flexible circuit board is usually thinner, the later stage of being not convenient for is buckled and is bent up, and the model recess is higher to shape, the size restriction of the flexible circuit board that can fix.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an automatic bending machine for a flexible circuit board, which aims to solve the problems that the flexible circuit board is placed on a push plate to feed the flexible circuit board in the automatic bending machine for the flexible circuit board in the prior art, but the flexible circuit board has inertia force to cause deviation when the push plate is started and stopped; or realize fixedly through the model recess, nevertheless because of flexible circuit board is usually thinner, the later stage of being inconvenient for is buckled and is bent up, and the model recess is to the shape of the flexible circuit board that can fix, the higher defect of size restriction.
In order to achieve the purpose, the invention is realized by the following technical scheme:
an automatic bending machine for a flexible circuit board structurally comprises a bending machine body, a control box, a solid suction and ejection assisting device, a base plate and supporting legs, wherein the bending machine body is of a rectangular structure, the control box is arranged above the bending machine body and is electrically connected with the bending machine body, the solid suction and ejection assisting device is arranged in the middle of the bending machine body and is in sliding connection with the bending machine body, the base plate is arranged below the bending machine body and is connected with the bending machine body through electric welding, and the supporting legs are arranged at four ends below the base plate and are in screw connection through screws;
the sucking-fixing ejection assisting device is composed of a sliding frame, a pressing control mechanism, a pressing frame and an ejection mechanism, wherein the rear portion of the sliding frame is embedded in the middle of the bending machine body, the pressing control mechanism is arranged on the rear lower portion of the sliding frame and welded with the pressing frame, and the ejection mechanism is arranged in the sliding frame and connected in a sliding mode.
As a further scheme of the invention, a welding box is arranged below the rear part of the sliding frame, and the pressing control mechanism is arranged in the welding box below the rear part of the sliding frame.
As a further scheme of the invention, the compaction control mechanism comprises a driving cam, a pushing block, a stress plate, a movable groove, a movable column, a swing frame, a hinge seat and a synchronous rod, wherein the driving cam is arranged below the pushing block and is in meshed connection with the pushing block, the pushing block is arranged at the center of the lower surface of the stress plate, the movable groove is arranged at the lower part of the stress plate and is of an integrally formed structure, the upper end of the movable column is embedded in the movable groove, the lower end of the movable column is movably connected with the right part of the swing frame through a hinge, the middle of the swing frame is movably connected with the hinge seat, and the synchronous rod is movably connected with the left part of the swing frame through a hinge.
As a further scheme of the invention, the two swing frames are arranged and are V-shaped, the right parts of the swing frames are movably connected with the movable columns, the left parts of the swing frames are connected with two ends of the synchronous rods, and the middle lower parts of the swing frames are movably connected with the hinge seats.
According to a further scheme of the invention, the pressing frame is rectangular with chamfered edges, namely the edge of the pressing frame is arc-shaped, welding plate frames are arranged below two sides of the pressing frame, the upper end of each welding plate frame is vertically welded with the pressing frame, and the lower end of each welding plate frame is vertically welded with the stress plate.
According to a further scheme of the invention, the ejection mechanism comprises an object placing plate, sliding pieces, an embedding reserved groove, air suction holes, an air suction pipe network, an accommodating groove, an ejection strip, a swing frame and a driving wheel, wherein the sliding pieces are arranged on two sides of the object placing plate, the object placing plate is in sliding connection with the sliding frame through the sliding pieces, the embedding reserved groove is arranged on two sides of the rear part of the object placing plate, the air suction holes are uniformly and equidistantly arranged on the rear part of the upper surface of the object placing plate, the air suction pipe network is in through connection with the air suction holes, the accommodating groove is arranged on the upper surface of the object placing plate, the ejection strip is embedded in the accommodating groove, one end of the swing frame is connected with two ends of the ejection strip, and the other.
Advantageous effects of the invention
Compared with the traditional automatic bending machine for the flexible circuit board, the automatic bending machine for the flexible circuit board can fix the flexible circuit board in a gas suction mode by the aid of the sucking and fixing ejection auxiliary device, overcomes the defect that the flexible circuit board with limited shape and size can only be fixed by the aid of fixing through the model groove in the traditional technology, can be ejected and lifted under the flexible circuit board by the aid of the ejection mechanism distributed with the gas suction holes at intervals, solves the problem that the flexible circuit board is inconvenient to bend due to thinness of the flexible circuit board, and realizes bending of the flexible circuit board with multiple specifications.
Drawings
Other features, objects and advantages of the invention will become more apparent from a reading of the detailed description of non-limiting embodiments with reference to the attached drawings.
In the drawings:
fig. 1 is a schematic structural diagram of an automatic bending machine for a flexible circuit board according to the present invention.
Fig. 2 is a structural plan view of the suction-fixing and ejection assisting device of the automatic bending machine for the flexible circuit board of the invention.
Fig. 3 is a structural state diagram of the suction-fixing-pushing auxiliary device of the automatic bending machine for the flexible circuit board of the invention.
Fig. 4 is a structural side view of an ejection mechanism of an automatic bending machine for flexible circuit boards according to the present invention.
Fig. 5 is a top view of the pushing mechanism of the automatic bending machine for flexible printed circuit board according to the present invention.
Fig. 6 is a structural side view of the suction/ejection assisting device of the automatic bending machine for flexible printed circuit boards according to the present invention.
In the figure: the device comprises a bending machine body-1, a control box-2, a suction and fixed ejection auxiliary device-3, a base plate-4, supporting legs-5, a sliding frame-6, a pressing control mechanism-7, a pressing frame-8, an ejection mechanism-9, a driving cam-a, a pushing block-b, a stress plate-c, a movable groove-d, a movable column-e, a swinging frame-f, a hinge seat-g, a synchronizing rod-h, a welding plate frame-8 a, a storage plate-i, a sliding piece-j, an embedded reserved groove-k, an air suction hole-r, an air suction pipe network-m, a containing groove-n, a jacking strip-o, a swinging frame-p and a driving wheel-q.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1-6, the present invention provides a technical solution of an automatic bending machine for a flexible circuit board:
an automatic bending machine for a flexible circuit board structurally comprises a bending machine body 1, a control box 2, a solid suction and ejection auxiliary device 3, a base plate 4 and supporting legs 5, wherein the bending machine body 1 is of a rectangular structure, the control box 2 is arranged above the bending machine body 1 and is electrically connected with the bending machine body, the solid suction and ejection auxiliary device 3 is arranged in the middle of the bending machine body 1 and is in sliding connection with the bending machine body, the base plate 4 is arranged below the bending machine body 1 and is connected with the bending machine body through electric welding, and the supporting legs 5 are arranged at four ends below the base plate 4 and are in screw connection with the base plate through screws;
the suction-fixation ejection auxiliary device 3 is composed of a sliding frame 6, a pressing control mechanism 7, a pressing frame 8 and an ejection mechanism 9, the rear portion of the sliding frame 6 is embedded in the middle of the bending machine body 1, the pressing control mechanism 7 is arranged below the rear portion of the sliding frame 6 and welded with the pressing frame 8, and the ejection mechanism 9 is arranged in the sliding frame 6 and connected in a sliding mode.
A welding box is arranged below the rear part of the sliding frame 6, and the pressing control mechanism 7 is arranged in the welding box below the rear part of the sliding frame 6.
The compaction control mechanism 7 comprises a driving cam a, a pushing block b, a stress plate c, a movable groove d, a movable column e, a swing frame f, a hinge seat g and a synchronizing rod h, wherein the driving cam a is arranged below the pushing block b and is meshed with the pushing block b, the pushing block b is arranged at the center of the lower surface of the stress plate c, the movable groove d is arranged at the lower part of the stress plate c and is of an integrated forming structure, the upper end of the movable column e is embedded in the movable groove d, the lower end of the movable column e is movably connected with the right part of the swing frame f through the hinge, the swing frame f is movably connected with the hinge seat g in the middle, and the synchronizing rod h is movably connected with the left part of the swing frame f through the hinge.
The swing frame f is provided with two V-shaped swing frames, the right portion of each swing frame f is movably connected with a movable column e, the left portion of each swing frame f is connected with two ends of a synchronizing rod h, and the middle lower portion of each swing frame f is movably connected with a hinge seat g.
The pressing frame 8 is a rectangle with chamfered edges, namely the edge of the pressing frame is arc-shaped, welding plate frames 8a are arranged below two sides of the pressing frame 8, the upper ends of the welding plate frames 8a are perpendicularly welded with the pressing frame 8, and the lower ends of the welding plate frames are perpendicularly welded with the stress plate c.
The ejection mechanism 9 is composed of a storage plate i, a sliding piece j, an embedded reserved groove k, an air suction hole r, an air suction pipe network m, a storage groove n, an ejection strip o, a swing frame p and a driving wheel q, wherein the sliding piece j is arranged on two sides of the storage plate i, the storage plate i is in sliding connection with the sliding frame 6 through the sliding piece j, the embedded reserved groove k is arranged on two sides of the rear portion of the storage plate i, the air suction holes r are uniformly and equidistantly arranged on the rear portion of the upper surface of the storage plate i, the air suction pipe network m is in through connection with the air suction hole r, the storage groove n is arranged on the upper surface of the storage plate i, the ejection strip o is embedded inside the storage groove n, one end of the swing frame p is connected with two ends of the ejection strip o, and the other end of the swing frame.
The working principle of the invention is as follows: a power supply is connected with a bending machine body 1, working parameters are set through a control box 2, a flexible circuit board is placed on an object placing plate i, the air suction hole r in an air suction state sucks the flexible circuit board, meanwhile, a sliding piece j drives the object placing plate i to slide towards the interior of the bending machine body 1 along a sliding frame 6, a welding plate frame 8a penetrates through an embedded reserved groove k, a driving cam a in a working state rotates upwards to the lower side from an original convex end, a pushing block b loses jacking force, under the action of self gravity of a stress plate c and a pressing frame 8, a movable column e and a swinging frame f are matched at the same time, the stress plate c drives the pressing frame 8 to move downwards, and the flexible circuit board above the stress plate c is pressed; and then the driving wheel q in a working state drives the jacking strip o to swing upwards through the swing frame p to jack the flexible circuit board, the flexible circuit board is bent and shaped by the bending device in the bending machine body 1, and then the flexible circuit board is output by the object placing plate i after the bending is finished, and the next flexible circuit board is replaced, and the process is repeated.
The invention solves the problem that the flexible circuit board automatic bending machine in the prior art places the flexible circuit board on the push plate to realize the feeding of the flexible circuit board, but the flexible circuit board has inertia force to cause deviation when the push plate is started and stopped; or the flexible circuit board is fixed through the model groove, but the flexible circuit board is usually thin and is not convenient to bend later, and the model groove has higher limitation on the shape and the size of the flexible circuit board which can be fixed.
While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (2)
1. The utility model provides an automatic crib crimper of flexible circuit board, its structure is including organism (1), control box (2) of buckling, inhale solid ejection auxiliary device (3), bed plate (4), supporting legs (5), organism (1) of buckling is the rectangle structure, organism (1) top and the electricity of buckling are located in control box (2), inhale solid ejection auxiliary device (3) and locate inside and sliding connection in the middle of organism (1) of buckling, bed plate (4) are located organism (1) below of buckling and are connected through electric welding, bed plate (4) below is located in supporting legs (5) four ends and through screw threaded connection, its characterized in that:
the sucking-fixing ejection assisting device (3) consists of a sliding frame (6), a pressing control mechanism (7), a pressing frame (8) and an ejection mechanism (9), the rear part of the sliding frame (6) is embedded in the middle of the bending machine body (1), the pressing control mechanism (7) is arranged below the rear part of the sliding frame (6) and welded with the pressing frame (8), the ejection mechanism (9) is arranged in the sliding frame (6) and connected in a sliding manner, a welding box is arranged below the rear part of the sliding frame (6), and the pressing control mechanism (7) is arranged in the welding box below the rear part of the sliding frame (6);
the pushing mechanism (9) consists of an object placing plate (i), a sliding piece (j), an embedded reserved groove (k), an air suction hole (r), an air suction pipe network (m), a containing groove (n), a jacking strip (o), a swinging frame (p) and a driving wheel (q), the sliding pieces (j) are arranged at two sides of the object placing plate (i), the object placing plate (i) is connected with the sliding rack (6) in a sliding way through the sliding pieces (j), the embedding reservation grooves (k) are arranged at two sides of the rear part of the object placing plate (i), the air suction holes (r) are uniformly arranged at the rear part of the upper surface of the object placing plate (i) at equal intervals, the air suction pipe network (m) is communicated with the air suction holes (r), the storage groove (n) is arranged on the upper surface of the object placing plate (i), the jacking strip (o) is embedded inside the containing groove (n), one end of the swing frame (p) is connected with two ends of the jacking strip (o), and the other end of the swing frame (p) is connected with the driving wheel (q).
2. The automatic bending machine for the flexible circuit board according to claim 1, wherein: the compaction control mechanism (7) comprises a driving cam (a), a pushing block (b), a stress plate (c), a movable groove (d), a movable column (e), a swing frame (f), a hinge seat (g) and a synchronizing rod (h), wherein the driving cam (a) is arranged below the pushing block (b) and is meshed with the pushing block (b), the pushing block (b) is arranged at the center of the lower surface of the stress plate (c), the movable groove (d) is arranged at the lower part of the stress plate (c) and is of an integrated molding structure, the upper end of the movable column (e) is embedded in the movable groove (d), the lower end of the movable column (e) is movably connected with the right part of the swing frame (f) through a hinge, the middle of the swing frame (f) is movably connected with the hinge seat (g), and the synchronizing rod (h) is movably connected with the left part of the swing frame (f) through a hinge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910593492.2A CN110450394B (en) | 2019-07-03 | 2019-07-03 | Automatic bending machine of flexible circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910593492.2A CN110450394B (en) | 2019-07-03 | 2019-07-03 | Automatic bending machine of flexible circuit board |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110450394A CN110450394A (en) | 2019-11-15 |
| CN110450394B true CN110450394B (en) | 2021-06-29 |
Family
ID=68482015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910593492.2A Expired - Fee Related CN110450394B (en) | 2019-07-03 | 2019-07-03 | Automatic bending machine of flexible circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110450394B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110978467B (en) * | 2019-12-19 | 2021-07-23 | 东莞华贝电子科技有限公司 | FPC bending forming device and FPC bending forming equipment |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63269316A (en) * | 1987-04-28 | 1988-11-07 | Mitsubishi Electric Corp | Flexible disk device |
| JP2004279860A (en) * | 2003-03-18 | 2004-10-07 | Sis:Kk | Minutes retrieval assisting device |
| JP2005096408A (en) * | 2003-09-03 | 2005-04-14 | Tomojiro Sakurai | Bend-forming apparatus |
| JP2005166779A (en) * | 2003-12-01 | 2005-06-23 | Nissan Motor Co Ltd | Composite circuit substrate and flexible circuit substrate |
| JP2008235506A (en) * | 2007-03-20 | 2008-10-02 | Teikoku Tsushin Kogyo Co Ltd | Drawer part structure of flexible circuit substrate on mounting board |
| JP2008270450A (en) * | 2007-04-19 | 2008-11-06 | Teikoku Tsushin Kogyo Co Ltd | Structure for setting flexible circuit substrate on mounting plate |
| CN102837423A (en) * | 2011-11-23 | 2012-12-26 | 南通力德尔机电科技有限公司 | Full-automatic flexible plate bending machine |
| CN103369942B (en) * | 2012-03-28 | 2017-08-18 | 富泰华工业（深圳）有限公司 | Fetching device |
| CN202951735U (en) * | 2012-11-06 | 2013-05-29 | 珠海锐翔电子有限公司 | Flexible circuit board bending machine |
| CN203044590U (en) * | 2012-11-06 | 2013-07-10 | 珠海锐翔电子有限公司 | Automatic bending machine for flexible circuit board |
| CN102962301B (en) * | 2012-11-06 | 2014-12-10 | 珠海锐翔电子有限公司 | Automatic bending machine for flexible circuit board |
| CN202951736U (en) * | 2012-11-06 | 2013-05-29 | 珠海锐翔电子有限公司 | Simple flexible circuit board automatic bar folder |
| CN103230968B (en) * | 2013-04-11 | 2015-05-20 | 珠海双赢柔软电路有限公司 | Pneumatic buckling device of flexible printed circuit (FPC) |
| CN105458092A (en) * | 2015-12-25 | 2016-04-06 | 佛山市成阳正大模具五金塑料有限公司 | Ejector rod balance structure specially used for multi-station die structure |
| CN206611648U (en) * | 2017-02-16 | 2017-11-03 | 上海与德信息技术有限公司 | FPC pre-bend tools |
| CN207911133U (en) * | 2017-12-11 | 2018-09-25 | 歌尔科技有限公司 | Flexible PCB bending mechanism |
| CN208359454U (en) * | 2018-04-20 | 2019-01-11 | 昆山煜祺辉机电科技有限公司 | Adagio bending machine |
| CN208801602U (en) * | 2018-09-13 | 2019-04-30 | 伟裕(厦门)电子有限公司 | A kind of flexible circuit board apparatus for bending |
-
2019
- 2019-07-03 CN CN201910593492.2A patent/CN110450394B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN110450394A (en) | 2019-11-15 |
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Effective date of registration: 20210608 Address after: 528300 3rd floor, No.1 Workshop, plot 1, Keji East Road, intensive industrial zone, Xiyong village committee, Shunde District, Foshan City, Guangdong Province Applicant after: FOSHAN SHUNDE LICHUANG ELECTRONIC Co.,Ltd. Address before: 621000 Southwest University of Science and Technology, Fucheng District, Sichuan, Mianyang Applicant before: Wu Wenquan |
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Granted publication date: 20210629 |