CN213056007U - Film pressing mechanism capable of pressing electronic product protective film - Google Patents
Film pressing mechanism capable of pressing electronic product protective film Download PDFInfo
- Publication number
- CN213056007U CN213056007U CN202021605993.2U CN202021605993U CN213056007U CN 213056007 U CN213056007 U CN 213056007U CN 202021605993 U CN202021605993 U CN 202021605993U CN 213056007 U CN213056007 U CN 213056007U
- Authority
- CN
- China
- Prior art keywords
- gear
- film
- cavity
- pressing
- film pressing
- 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
- 230000007246 mechanism Effects 0.000 title claims abstract description 98
- 238000003825 pressing Methods 0.000 title claims abstract description 46
- 230000001681 protective effect Effects 0.000 title claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims abstract description 47
- 238000010030 laminating Methods 0.000 claims abstract description 46
- 238000007790 scraping Methods 0.000 claims abstract description 9
- 230000009467 reduction Effects 0.000 claims description 4
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 238000009434 installation Methods 0.000 abstract description 6
- 238000007723 die pressing method Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 210000002489 tectorial membrane Anatomy 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
Images
Landscapes
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The utility model provides a film pressing mechanism capable of pressing electronic product protective films, which comprises a guide rail, a screen installation base and an automatic film pressing device, wherein the left side and the right side of the screen installation base are respectively provided with the guide rail, the guide rail is provided with the automatic film pressing device, the automatic film pressing device consists of a transmission mechanism, a connecting plate and a film pressing mechanism, the transmission mechanism is respectively arranged above the guide rail, the film pressing mechanism is arranged between the transmission mechanisms, the transmission mechanisms are connected through the connecting plate, the film pressing mechanism consists of a protective film unwinding roller, a laminating roller and a scraping mechanism, the protective film unwinding roller and the laminating roller are connected with the transmission mechanism, the scraping mechanism consists of a pressing shaft, a connecting rod, a scraping brush and a cutting knife, the connecting rod is evenly arranged on the pressing shaft, one end of the connecting rod is connected with the scraping brush, the cutting knife is arranged right above the scraping brush, the film covering and, and the protective film can be automatically cut, manual cutting after film pressing is not needed, the labor force is reduced, and the cost is saved.
Description
Technical Field
The utility model relates to an electronic equipment auxiliary assembly field especially relates to a press mold mechanism that can compress tightly electronic product protection film.
Background
Cell-phone, the back is accomplished in the equipment to the electronic product of taking the display screen such as flat panel and liquid crystal display, for the protection screen is not scraped flower or wearing and tearing, need paste one deck protection film on the screen surface, current die pressing mechanism need cover the protection film on the screen in advance, then the roller of rethread die pressing mechanism compresses tightly the protection film on the screen, this kind of operating means is very troublesome, need artifical pre-cover protection film, the operating time has been increased, and current press mold is according to can laminating the back, probably there are fold and bubble between protection film pressure and the screen, influence laminating quality, and current die pressing mechanism can not carry out automatic cutting to it after the protection film laminating is accomplished, still need the manual work to cut out the protection film, and is automatic low, and the labour has been increased.
Disclosure of Invention
According to the technical problem, the utility model provides a film pressing mechanism capable of pressing the protective film of an electronic product, which is characterized by comprising guide rails, a screen installation base and an automatic film pressing device, wherein the left side and the right side of the screen installation base are respectively provided with the guide rails, the number of the guide rails is 2, and the automatic film pressing device is arranged on the guide rails;
a rack sliding rail is arranged in the center of the guide rail;
the automatic film pressing device comprises transmission mechanisms, connecting plates and film pressing mechanisms, wherein the transmission mechanisms are respectively arranged above the guide rails, the transmission mechanisms are arranged in bilateral symmetry relative to the screen mounting base, the film pressing mechanisms are arranged between the transmission mechanisms, and the transmission mechanisms are connected through the connecting plates;
the transmission mechanism comprises a shell, a speed reducing motor, a pulley, a first transmission mechanism and a second transmission mechanism, wherein the shell is internally divided into a first cavity and a second cavity, the second cavity is positioned on the inner side of the first cavity, the speed reducing motor is arranged on the outer wall of the first cavity, the pulley is arranged at the bottom of the first cavity, the pulley is arranged on the outer wall of the first cavity through a rotating shaft, the bottom of the pulley is arranged on a guide rail, the pulley is respectively positioned on the left side and the right side of a rack slide rail, the first transmission mechanism is arranged in the first cavity, and the second transmission mechanism is arranged in the second cavity;
the first transmission mechanism is composed of a driving gear A, a linkage gear A and a driven gear A, the driving gear A is connected with the output end of the speed reduction motor through a rotating shaft, the linkage gear A is arranged below the driving gear A, the driving gear A is meshed with the linkage gear A, the driven gear A is arranged below the linkage gear A, the linkage gear A is meshed with the driven gear A, the driven gear A is meshed with a rack slide rail on a guide rail, and the linkage gear A and the driven gear A are installed on the inner wall of the first cavity through the rotating shaft;
the second transmission mechanism consists of a driving gear B, a linkage gear B and a driven gear B, the driving gear B is connected with the driving gear A through a transmission shaft, the linkage gear B is arranged below the driving gear B and is meshed with the linkage gear B, the driven gear B is arranged below the linkage gear B and is meshed with the driven gear B, and the linkage gear B and the driven gear B are installed on the inner wall of the second cavity through rotating shafts;
the utility model discloses a film pressing machine, including press mold mechanism, protection film, roller, laminating roller, driving gear B, driven gear B, laminating roller, screen laminating, torsional spring, connecting rod, press mold mechanism unreels the roller by the protection film, the roller is unreeled to the laminating roller and scrapes flat mechanism and constitute, the protection film is unreeled the roller and is connected with driving gear B through the pivot, the laminating roller is connected with driven gear B through the pivot, laminating roller and screen laminating, the protection film is unreeled the roller and is located the oblique top of laminating roller, it is located laminating roller front side to scrape flat mechanism, scrape flat mechanism by the laminating axle, the connecting rod, scrape flat brush and cutting knife and constitute, the laminating axle is installed on the outer wall of left and right sides second cavity, the epaxial cover of laminating is equipped with the torsional spring, the epaxial connecting rod that evenly is provided with.
The utility model has the advantages that:
the utility model discloses a through being provided with guide rail, drive mechanism, protection film unreeling roller and closing laminating roller, drive mechanism moves automatically on the guide rail, and protection film unreeling roller unreels to laminating roller in step, make laminating roller compress tightly the protection film on the screen, this kind of structure makes tectorial membrane and press mold operation once only accomplish automatically, need not cover the protection film on the screen in advance during each press mold again, the simple operation, and drive mechanism can slide on the guide rail automatically, the operation of tectorial membrane and press mold is accomplished fully automatically, degree of automation is high, the utility model discloses a press fit shaft of strickle mechanism is equipped with the torsional spring on, the pressfitting shaft drives the strickle brush through the connecting rod and laminates with the screen all the time, drives out the bubble between screen and the protection film, when strickle mechanism moves the screen border simultaneously, the strickle brush because no longer contacts with the screen, after breaking away from the screen restriction, scrape flat brush and continue to push down under the effect of connecting rod and pressfitting axle, scrape the cutting knife of flat brush top simultaneously and cut off the protection film automatically, because the cutting knife risees from a left side to the right side gradually, so cut off the protection film from a left side to the right side when cutting the protection film, the condition that the flat knife once only can't cut off can not appear in this kind of cutting mode, the cutting plane is more level and smooth, cutting quality is better, moreover this kind of structure can the automatic cutout protection film, need not the manual cutting behind the press mold and reduced the labour, the cost is saved.
The utility model discloses a be provided with gear motor, first drive mechanism and second drive mechanism, gear motor passes through the drive mechanism that first drive mechanism drove the left and right sides and slides on the guide rail through the pulley, the rotation of unreeling roller and laminating roller through second drive mechanism simultaneously and the distance that drive mechanism slided, the distance that makes drive mechanism remove on the guide rail is the same with the protection film length that the roller was unreeled to the protection film, and also the same with laminating roller pivoted distance, just so can prevent that the protection film length that the roller was unreeled to the protection film is greater than sliding distance and makes the protection film between protection film unreeling roller and the laminating roller be in lax not taut state, it takes place to have reduced the condition that the protection film is not laminated.
Drawings
Fig. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view of the front view of the present invention;
fig. 3 is a side view of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 2;
FIG. 5 is a cross-sectional view A-A of FIG. 1;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 1;
FIG. 7 is a cross-sectional view of C-C of FIG. 1;
fig. 8 is a structural diagram of the cutting knife of the present invention.
As shown in the figure: the screen protection device comprises a guide rail 1, a screen mounting base 2, a rack sliding rail 3, a connecting plate 4, a shell 5, a speed reduction motor 6, a pulley 7, a driving gear A8, a driving gear A9, a linkage gear A10, a driven gear A11, a driving gear B12, a linkage gear B13, a driven gear B14, a protection film unwinding roller 15, a laminating roller 16, a laminating shaft 17, a connecting rod 18, a scraping brush 18, a cutting knife 19, a screen 20, a first cavity 21, a second cavity 22 and a transmission shaft 23.
Detailed Description
Example 1
The utility model provides a film pressing mechanism capable of pressing a protective film of an electronic product, which is characterized by comprising a guide rail 1, a screen installation base 2 and an automatic film pressing device, wherein the left side and the right side of the screen installation base 2 are respectively provided with the guide rail 1, the number of the guide rails 1 is 2, and the automatic film pressing device is arranged on the guide rail 1;
a rack sliding rail 3 is arranged in the center of the guide rail 1;
the automatic film pressing device consists of a transmission mechanism, a connecting plate 4 and a film pressing mechanism, wherein the transmission mechanisms are respectively arranged above the guide rails 1, the transmission mechanisms are arranged in bilateral symmetry relative to the screen mounting base 2, the film pressing mechanisms are arranged between the transmission mechanisms, and the transmission mechanisms are connected through the connecting plate 4;
the transmission mechanism consists of a shell 5, a speed reducing motor 6, pulleys 7, a first transmission mechanism and a second transmission mechanism, wherein the inside of the shell 5 is divided into a first cavity 21 and a second cavity 22, the second cavity 22 is positioned at the inner side of the first cavity 21, the speed reducing motor 6 is arranged on the outer wall of the first cavity 21, the pulleys 7 are arranged at the bottom of the first cavity 21, the pulleys 7 are arranged on the outer wall of the first cavity 21 through rotating shafts, the bottoms of the pulleys 7 are arranged on the guide rails 1, the pulleys 7 are respectively positioned at the left side and the right side of the rack slide rail 3, the first transmission mechanism is arranged in the first cavity 21, and the second transmission mechanism is arranged in the second cavity;
the first transmission mechanism consists of a driving gear A8, a linkage gear A9 and a driven gear A10, the driving gear A8 is connected with the output end of the speed reduction motor 6 through a rotating shaft, the linkage gear A9 is arranged below the driving gear A8, the driving gear A8 is meshed with the linkage gear A9, the driven gear A10 is arranged below the linkage gear A9, the linkage gear A9 is meshed with the driven gear A10, the driven gear A10 is meshed with a rack slide rail 3 on the guide rail 1, and the linkage gear A9 and the driven gear A10 are installed on the inner wall of the first cavity 21 through rotating shafts;
the second transmission mechanism consists of a driving gear B11, a linkage gear B12 and a driven gear B13, the driving gear B11 is connected with the driving gear A8 through a transmission shaft 23, the linkage gear B12 is arranged below the driving gear B11, the driving gear B11 is meshed with the linkage gear B12, the driven gear B13 is arranged below the linkage gear B12, the linkage gear B12 is meshed with the driven gear B13, and the linkage gear B12 and the driven gear B13 are installed on the inner wall of the second cavity 22 through rotating shafts;
film pressing mechanism unreels roller 14 by the protection film, laminating roller 15 is constituteed with strickle the mechanism, the protection film unreels roller 14 and is connected with driving gear B11 through the pivot, laminating roller 15 is connected with driven gear B13 through the pivot, laminating roller 15 and screen 20 laminating, protection film unreels roller 14 and is located laminating roller 15's oblique top, strickle the mechanism and be located laminating roller 15 front side, strickle the mechanism and be connected by pressfitting axle 16, connecting rod 17, strickle flat brush 18 and cutting knife 19 and constitute, pressfitting axle 16 is installed on the outer wall of left and right sides second cavity 22, the cover is equipped with the torsional spring on the pressfitting axle 16, evenly be provided with connecting rod 17 on the pressfitting axle 16, connecting rod 17 one end is connected with and scrapes flat brush 18, it is the silica gel material to scrape flat brush 18, be provided with 19 directly over strickleing.
Example 2
When the utility model is used, the screen 20 is placed above the screen mounting base 2, then the gear motor 6 is started, the gear motor 6 drives the driving gear A8 to rotate, the driving gear A8 drives the driven gear A10 to rotate through the linkage gear A9, the driven gear A10 is meshed with the rack slide rail 3, the driving transmission mechanism moves on the guide rail 1 under the action of the pulley 7, meanwhile, the driving gear A8 drives the driving gear B11 to rotate through the transmission shaft 23, the driving gear B11 drives the driven gear B13 to rotate through the linkage gear B12, the driving gear A8, the driving gear B11, the rotating directions of the driven gear A and the driven gear B13 are the same and synchronous, the driving gear B11 drives the protective film unwinding roller 14 to unwind in the same direction as the sliding direction, meanwhile, the protective film is pressed below the laminating roller 15, meanwhile, the driven gear B13 drives the laminating roller 15 to rotate, the protective film is pressed on the screen 20 while moving, because the cover is equipped with the torsional spring on the pressfitting axle 16, so the pressfitting axle 16 drives through connecting rod 17 and scrapes the flat brush 18 and paste all the time and tightly catch up the bubble out between screen 20 and the protection film on screen 20, when scraping flat brush 18 and removing the screen 20 edge, owing to scrape flat brush 18 and break away from the restriction of screen 20, it continues to push down to scrape flat brush 18 under connecting rod 17 and pressfitting axle 16's effect, the cutting knife 19 of top also pushes down under connecting rod 17 and pressfitting axle 16's drive simultaneously, with the protection film tip, because cutting knife 19 risees from a left side to the right side gradually, so cut off the protection film from a left side to the right side when cutting the protection film, the disposable unable circumstances of cutting off of flat knife can not appear in this kind of cutting mode, the cutting plane is more level and smooth, the.
The utility model discloses a be provided with gear motor 6, first drive mechanism and second drive mechanism, gear motor 6 passes through the drive mechanism that first drive mechanism drove the left and right sides and slides on guide rail 1 through pulley 7, the distance that slides with the rotation of protection film unreeling roller 14 and laminating roller 15 and drive mechanism through second drive mechanism simultaneously is synchronous, the distance that makes drive mechanism move on guide rail 1 is the same with the protection film length that protection film unreeling roller 14 emitted, and also the same with laminating roller 15 pivoted distance, just so can prevent that protection film length that protection film unreeling roller 14 emitted is greater than the sliding distance and makes the protection film that protection film unreeling roller 14 and laminating roller 15 between be in lax not taut state, the condition that the protection film was not laminated takes place has been reduced.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. The utility model discloses each part that mentions is the common technique in prior art, and the technical personnel of this trade should understand, the utility model discloses do not receive the restriction of above-mentioned embodiment, the description only is the explanation in above-mentioned embodiment and the description the principle of the utility model, under the prerequisite that does not deviate from the spirit and the scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the protection of claim the utility model is within the scope. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. A film pressing mechanism capable of pressing a protective film of an electronic product is characterized by comprising guide rails, a screen mounting base and automatic film pressing devices, wherein the left side and the right side of the screen mounting base are respectively provided with the guide rails, the number of the guide rails is 2, the automatic film pressing devices are mounted on the guide rails, and the center of each guide rail is provided with a rack slide rail;
the automatic film pressing device comprises transmission mechanisms, connecting plates and film pressing mechanisms, wherein the transmission mechanisms are respectively arranged above the guide rails, the transmission mechanisms are arranged in bilateral symmetry relative to the screen mounting base, the film pressing mechanisms are arranged between the transmission mechanisms, and the transmission mechanisms are connected through the connecting plates;
the transmission mechanism consists of a shell, a speed reducing motor, a pulley, a first transmission mechanism and a second transmission mechanism, wherein the shell is internally divided into a first cavity and a second cavity, the second cavity is positioned at the inner side of the first cavity, the speed reducing motor is arranged on the outer wall of the first cavity, the pulley is arranged at the bottom of the first cavity, the bottom of the pulley is arranged on a guide rail, the pulley is respectively positioned at the left side and the right side of a rack slide rail, the first transmission mechanism is arranged in the first cavity, and the second transmission mechanism is arranged in the second cavity;
the first transmission mechanism consists of a driving gear A, a linkage gear A and a driven gear A, the driving gear A is connected with the output end of the speed reduction motor through a rotating shaft, the linkage gear A is arranged below the driving gear A, the driving gear A is meshed with the linkage gear A, the driven gear A is arranged below the linkage gear A, the linkage gear A is meshed with the driven gear A, and the driven gear A is meshed with a rack slide rail on a guide rail;
the second transmission mechanism consists of a driving gear B, a linkage gear B and a driven gear B, the driving gear B is connected with the driving gear A through a transmission shaft, the linkage gear B is arranged below the driving gear B and is meshed with the linkage gear B, the driven gear B is arranged below the linkage gear B, and the linkage gear B is meshed with the driven gear B;
the utility model discloses a film pressing machine, including press mold mechanism, protection film unwinding roller, laminating roller and screen, the protection film unwinding roller is connected through pivot and driving gear B, the laminating roller is connected through pivot and driven gear B, laminating roller and screen laminating, the protection film unwinding roller is located the oblique top of laminating roller, it is located laminating roller front side to scrape flat mechanism, scrape flat mechanism by laminating axle, connecting rod, scrape flat brush and cutting knife and constitute, the laminating axle is installed on the outer wall of left and right sides second cavity, the epaxial cover of laminating is equipped with the torsional spring, the epaxial connecting rod that evenly is provided with of laminating, connecting rod one end is connected with scrapes flat brush, be provided with the cutting knife directly over scraping flat brush, the cutting knife risees gradually from a left side to the right side.
2. A film pressing mechanism for pressing a protective film of an electronic product as recited in claim 1, wherein said pulley is mounted on an outer wall of said first chamber through a shaft.
3. A film pressing mechanism for pressing a protective film of an electronic product as recited in claim 1, wherein said linkage gear a and said driven gear a are mounted on an inner wall of said first cavity through a shaft.
4. A film pressing mechanism for pressing a protective film of an electronic product as claimed in claim 1, wherein said linking gear B and said driven gear B are mounted on the inner wall of the second cavity through a shaft.
5. A film pressing mechanism according to claim 1, wherein said scraping brush is made of silicone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021605993.2U CN213056007U (en) | 2020-08-05 | 2020-08-05 | Film pressing mechanism capable of pressing electronic product protective film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021605993.2U CN213056007U (en) | 2020-08-05 | 2020-08-05 | Film pressing mechanism capable of pressing electronic product protective film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213056007U true CN213056007U (en) | 2021-04-27 |
Family
ID=75580240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021605993.2U Active CN213056007U (en) | 2020-08-05 | 2020-08-05 | Film pressing mechanism capable of pressing electronic product protective film |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213056007U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115464967A (en) * | 2022-09-05 | 2022-12-13 | 重庆雅天下钢结构有限公司 | Forming device is used in processing of heat-insulating various steel composite sheet of core |
-
2020
- 2020-08-05 CN CN202021605993.2U patent/CN213056007U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115464967A (en) * | 2022-09-05 | 2022-12-13 | 重庆雅天下钢结构有限公司 | Forming device is used in processing of heat-insulating various steel composite sheet of core |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211333493U (en) | Adhesive tape splitting machine | |
| CN213056007U (en) | Film pressing mechanism capable of pressing electronic product protective film | |
| CN207645464U (en) | One kind automatically cutting off film and the mechanism that tapes for film splicing producing line | |
| CN213320504U (en) | Advertisement paper cutting device for advertisement design | |
| CN206426150U (en) | Integration apparatus is collected in a kind of rubber strip cutting | |
| CN211491730U (en) | Automatic cross cutting machine of rolling waste material | |
| CN216543561U (en) | Cutting tool who has locate function is used in plastic film production | |
| CN213563009U (en) | Butyl adhesive tape splitting machine with automatic label sticking function | |
| CN209871911U (en) | Cutting and slicing device for adhesive tape roll | |
| CN113601604A (en) | Two-sided adhesive tape both ends remove gluey mechanism | |
| CN209739528U (en) | Hot melt formula plastic packaging cutting device | |
| CN117734188B (en) | Remaining needle attaching device and attaching process thereof | |
| CN219329463U (en) | Full-automatic data line cuts line tin sticky equipment | |
| CN220744849U (en) | Laminating slitting machine | |
| CN112315131B (en) | Double-deck shoelace processing is with cuting to cover equipment of pressing | |
| CN216067609U (en) | Cutting device is used in hot melt adhesive production and processing | |
| CN213616982U (en) | LED paster lamp strip simple to process | |
| CN217807840U (en) | Double-sided plastic film digital printing slitting equipment | |
| CN218753929U (en) | EVA hot melt adhesive net film forming and winding device | |
| CN216067828U (en) | Waste material extraction mechanism of circular knife cross cutting machine | |
| CN218082971U (en) | From production of type membrane protection film with cutting edge collection device | |
| CN220030439U (en) | Green and environment-friendly double-shaft slitting machine device | |
| CN221316782U (en) | Carton sealing machine | |
| CN214818984U (en) | Extrusion device for rubber processing | |
| CN219171088U (en) | EVA sponge's paster device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231117 Address after: Room 202, 2nd Floor, Building 9, Building 32, Polar Plaza, Tianjin Pilot Free Trade Zone (Central Business District), Binhai New Area, Tianjin, 300000 (under the custody of Junren Business Secretary (Tianjin) Co., Ltd., No. JR2020-6) Patentee after: Zhongqi NetEase (Tianjin) Technology Development Co.,Ltd. Address before: 300000 intersection of fenghan road and Zhonghui Road, beizhakou Town, Jinnan District, Tianjin Patentee before: Tianjin Chengjin Electronics Co.,Ltd. |