CN102767260B - The equipment of metal ceiling and making metal ceiling - Google Patents
The equipment of metal ceiling and making metal ceiling Download PDFInfo
- Publication number
- CN102767260B CN102767260B CN201110112261.9A CN201110112261A CN102767260B CN 102767260 B CN102767260 B CN 102767260B CN 201110112261 A CN201110112261 A CN 201110112261A CN 102767260 B CN102767260 B CN 102767260B
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- ceiling
- roll
- equipment
- transition portion
- workbench
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- 239000002184 metal Substances 0.000 title claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 title claims abstract description 26
- 230000007704 transition Effects 0.000 claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 37
- 239000010959 steel Substances 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 33
- 238000005452 bending Methods 0.000 claims abstract description 12
- 238000004519 manufacturing process Methods 0.000 claims description 14
- 238000005520 cutting process Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 2
- 230000008901 benefit Effects 0.000 abstract description 4
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 230000035699 permeability Effects 0.000 abstract description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008030 elimination Effects 0.000 description 3
- 238000003379 elimination reaction Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000001934 delay Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000009966 trimming Methods 0.000 description 2
- 206010000369 Accident Diseases 0.000 description 1
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 235000014121 butter Nutrition 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
The present invention relates to a kind of ceiling, particularly a kind of steel plate ceiling mostly is the use such as household, office occupancy and public place furred ceiling。The invention provides a kind of steel ceiling, this steel ceiling has that corrosion resistance is strong, high temperature resistant, attractive in appearance, its plate body flatness is high, air permeability is good, customize the advantages such as flexible。Described metal ceiling is steel plate materials, it has at least two limits of a pair correspondence to be provided with bending, corresponding sides are provided with hook-shaped bending scrap (bridge) by another, described hook-shaped bending scrap (bridge) is divided into outer incline transition and tilted part, described outer incline transition is connected with ceiling bottom surface, spend 110 to 120 with the angle of bottom surface, the limit that described tilted transition is connected with outer incline transition and ceiling plane perpendicular, tilted transition entirety becomes hook-shaped, its angle of inclination is 60 to 70 degree, and the junction of every part is designed with chamfering。
Description
Technical field
The present invention relates to a kind of ceiling, particularly a kind of steel plate ceiling mostly be residences, office with and the use such as public place furred ceiling。
The present invention relates to a kind of metal ceiling board processing device, be particularly well-suited to make steel ceiling。
Background technology
How with straw mat, reed mat, plank etc. for main material in traditional residence。Along with the more modern architecture material of progress of science and technology is employed to come in, metal material is exactly one of which。Metal ceiling in the market mostly is aluminium alloy plate, the frivolous easy processing attractive in appearance of its aluminium alloy plate, but has certain shortcoming。The point very low pass of aluminium alloy is everlasting 600 750 degree, and one being easier of material of aluminium alloy matter during fire accident occurs, therefore less than good fireproofing function。Its steel ceiling is thus born, and the point of its steel is higher than aluminium alloy plate, and its point, generally at about 1500 degree, adopts the ceiling of steel have firmness high and use the advantages such as time length。But it is more difficult to process, the attractive in appearance of its degree high tenacity well its ceiling again, the steel ceiling that present market occurs, but there is certain defect in it。The such as ceiling of customization certain specification, the ceiling that span that especially length is long is relatively larger, its factory utilizes prior art each fritter sheet material can only be spliced and combined, and does not so not only reach the satisfaction of client but also wastes resource。The present invention just can solve the problems referred to above, only with a streamline, it is possible to arbitrarily allows the steel ceiling of customization random length。And filling up international and domestic blank: the width dimensions 300 of batten, length dimension can arbitrarily set, and the dimensional accuracy of batten and the percent ripple on surface are reached advanced world standards。
Summary of the invention
The present invention provides a kind of steel ceiling according to the problems referred to above, and this steel ceiling has that corrosion resistance is strong, high temperature resistant, attractive in appearance, its plate body flatness is high, air permeability is good, customize the advantages such as flexible。Described metal ceiling is steel plate materials, it has at least two limits of a pair correspondence to be provided with bending, corresponding sides are provided with hook-shaped bending scrap (bridge) by another, described hook-shaped bending scrap (bridge) is divided into outer incline transition portion and the oblique part of introversion transition, described outer incline transition portion is connected with ceiling bottom surface, spend 110 to 120 with the angle of bottom surface, the limit that described tilted transition portion is connected with outer incline transition portion and ceiling plane perpendicular, tilted transition portion entirety becomes hook-shaped, its angle of inclination is 60 to 70 degree, and the junction of every part is designed with chamfering。
The bottom surface of described ceiling smooth and 10 meters have the radian of 1。It is that the flatness of its ceiling directly affects the quality standard of this ceiling for the circulation of indoor outer space that plate body at steel ceiling arranges little。
Second goal of the invention of the present invention is to provide a kind of equipment manufacturing metal ceiling；Steel sheet material is suppressed by this equipment on streamline, thus obtaining the steel ceiling of high-quality。
For completing the second goal of the invention, patent of the present invention is achieved in that this equipment is on a streamline, it includes one for placing and the unreeling structure of uncoiling sheet metal, one eliminates stress sixfold evener, one plate forming workshop section, described plate forming workshop section forms a sheet path, it includes: workbench and the feed guide device above workbench, it is arranged in sequence with workbench after described feed guide device, described workbench is in the both sides of sheet material, workbench is provided with two corresponding up and down bi-lateral support axles, described bi-lateral support axle is provided with roll。
Equipment flowsheet on its streamline can settle at one go。Arranging elimination stress sixfold evener in the middle of workbench and unreeling structure, it is by work after being in that steel plate materials to be flattened and guides steel band correctly to send into。Evener by 23 flattening rollers, 25 intermediate calender rolls, 6 groups support roller, dynamic device, 2 nip rolls wheels and machine and form, device can carry out the opening adjustment of upper and lower flattening roller。The sheet material at ejecting plate place of stress relieving equipment is connected with the roll on workbench, finally by roll molding a series of on workbench。Its stress relieving equipment is the important step improving manufactured by this equipment product quality out, eliminates the stress of steel board so as to be not easy deformation。
On described streamline, its front end eliminating stress sixfold evener is provided with automatic impact machine。The precision high workload effect that design punching herein is because punching is high excellent。Punching is arranged on the front end eliminating stress sixfold evener, and so design is because some client needs customization ceiling, therefore just has moreization。
The jog on the surface of described every a pair roller is relative, and the variation that angle is incremented by successively, and for by sheet material between its roll, described roll has 14 groups。Because the toughness of steel ceiling is very strong, so to adopt the mode being once incremented by carry out transition when compacting, this ensure that the smooth of its angle of bend and the quality of production。
First 12 groups of described roll is profiled section, latter 2 groups is leveling section, the hook-shaped formative stage that 1 to 5 group is tilted transition portion of its roll, 5 to 11 groups of described roll are outer incline transition portion and the formative stage of tilted transition portion junction, the formative stage that 6 to 13 groups are outer incline transition portion of described roll。Each roll of each of which part has the effect of uniqueness, and the change of all angles can be talked about in detail inside specific embodiment。
On described workbench, at least part of workbench is provided with the unilateral axle that supports, and the described unilateral axle that supports is inclined shaft。Be arranged on the roll on inclined shaft is smooth function and round-off work herein, the ceiling that this equipment making goes out be characterized in that flatness is very high。
The end of described workbench is provided with automatic cutting equipment, is provided with roller sense in cutting machine front from device, and this device is connected by microcomputer control system。This equipment can be customized according to the specific requirement of user, and especially the span of some Administrative Area or public place ceiling is relatively larger, so wanting the relatively larger ceiling of customized lengths。Ceiling length manual measurement is easy for error, and automatic cutting equipment just can well grasp this point, it is possible to according to the parameter designed in advance by apart from surface trimming。Being sometimes prone to some faults occur in process of production, the produced economic loss more of a specified duration that especially delays on streamline is more big。In order to more accurately differentiate out of order approximate location faster, roller sense is adopted just to can solve this problem from alarm device。
The main transmission of described roll is by Serve Motor Control, and a corresponding servomotor of roll, servomotor is connected with main speed reduction box deboost axle。Because the own wt reason of roll is so wanting a roll to join a motor, thus reaching the effect run well。
Accompanying drawing explanation
Fig. 1 is the schematic perspective view of steel ceiling。
Fig. 2 is the manufacture equipment schematic diagram of steel ceiling。
Fig. 3 is the manufacture equipment top view schematic diagram of steel ceiling。
Fig. 4 is the position relationship schematic diagram of roll and motor。
Fig. 5 is the compacting angle forming schematic diagram of each roll。
Fig. 6 is the unilateral schematic diagram supporting axle。
Detailed description of the invention
In order to its advantage of steel ceiling of the present invention is described, below in conjunction with accompanying drawing, the invention will be further elaborated。
As shown in Figure 1, its metal ceiling is steel plate materials, it has at least two limits of a pair correspondence to be provided with bending 4, another hook-shaped bending scrap (bridge) corresponding sides being provided with described in hook-shaped bending scrap (bridge) is divided into outer incline transition portion 3 and tilted transition portion 1, described outer incline transition portion 3 is connected with ceiling bottom surface 6, its angle with ceiling bottom surface 6 is spent 110 to 120, described tilted transition portion 1 is vertical with ceiling bottom surface 6 with the connection limit 2 of outer incline transition portion 3, the overall one-tenth of tilted transition portion 1 is hook-shaped, its angle of inclination is 60 to 70 degree, the junction of every part is designed with chamfering。Described metal ceiling entirety is rectangular。Its plate body of described metal ceiling is provided with little by 5。The bottom surface 6 of described ceiling smooth and 10 meters have the radian of 1。It is that the flatness of ceiling directly affects the quality standard of this ceiling for the circulation of indoor outer space that plate body at steel ceiling arranges little 5。
In order to the explanation present invention more makes the equipment of ceiling, below in conjunction with accompanying drawing, equipment is further elaborated。
Such as Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Fig. 6, it is for manufacturing the equipment structure chart of metal ceiling, this equipment is on a streamline, it includes one for placing the unreeling structure 7 with uncoiling sheet metal, one eliminates stress sixfold evener 10, one plate forming workshop section, described plate forming workshop section forms a sheet path, it includes: workbench 13 and workbench 13 feed guide device 12 above, described feed guide device 12 is arranged in sequence with workbench 19 below, described workbench 19 is in the both sides of sheet material 8, workbench 19 is provided with two corresponding up and down bi-lateral support axles 15, described bi-lateral support axle 15 is provided with roll 23 34。It is provided with impact machine 9 in the front end eliminating stress sixfold evener 10。The jog on the surface of the every a pair roller 23 on workbench 19 is relative, and the variation that angle is incremented by successively, and for by sheet material between its roll, described roll has 14 groups。It is described further according to described roll, first 12 groups of roll is profiled section, latter 2 groups is leveling section, the hook-shaped formative stage that 1 to 5 group is tilted transition portion of its roll, 5 to 11 groups of described roll are outer incline transition portion and the formative stage of tilted transition portion junction, the formative stage that 6 to 13 groups are outer incline transition portion (as shown in Figure 5) of described roll。Last two groups of rolls at workbench are 35 36 (as shown in Figure 6) of unilateral support, and its roll is as smooth use。End at workbench 19 is provided with cuts equipment 18 automatically, is provided with roller sense from device 16 in automatic cutting equipment 18 front, and this device is connected by microcomputer control system 17 so that it is the whole streamline of more square reason。The main transmission of roll is to be controlled by servomotor 22, and a corresponding servomotor 22 of roll, servomotor 22 is connected with main spindle box deboost axle 21。
Below every part-structure and function are done detailed decomposition explanation, this equipment processing action complete on a streamline, unreeling structure 7 is put steel plate materials 8, last volume end at unwinding device is provided with flattening partially, so that the stress of curling steel plate materials subtracts, the charging aperture to impact machine 9 is led in one end of steel plate materials, and this impact machine is to automatically control, and is in that the precision that impact machine rushes is efficiently fast by the purpose of impact machine 9。Being provided with elimination stress sixfold evener 10 after impact machine, eliminate stress sixfold evener 10 and be internally provided with 23 leveling rolls 11, the two ends eliminating stress sixfold evener 10 working roll all carry transmission with oiliness bearing, and with manual butter lubricating circulatory system。Evener top working roll group is supported to adjust under running roller and is adjusted by synchronous pulley driving electric by wheel reducing motor, and its bottom working roll group supports running roller pressure and adjusts by adjusting manually。Evener work running roller through independent to axle with roller box by reaching。Top pinch roll is by force feed control, and upper flattening roller machine and machine are in fixing shape, the opening adjustment that lower flattening roller is reached by AC deceleration and even device can carry out upper and lower flattening roller。The sheet material at ejecting plate place of stress relieving equipment is connected with the roll on workbench, finally by roll molding a series of on workbench。Eliminating stress sixfold evener 10 is an important Quality link, because steel plate materials dispatches from the factory afterwards not through any processing, its internal stress does not eliminate, in addition the steel plate materials surface being flushed over is not perfectly flat whole, eliminate the leveling of stress sixfold can well coordinate by automatic impact machine, eliminate the stress of steel board so as to be not easy deformation。Workbench is provided with feed guide device 12, eliminates steel plate materials that stress sixfold evener 10 goes out through feed guide device 12, make steel plate materials can and roll 23 just to and dock。As being arranged in sequence with workbench 19 after Fig. 3 feed guide device 12, described workbench 19 is in the both sides of sheet material 8, and workbench 19 is provided with two corresponding up and down bi-lateral support axles 15, and described bi-lateral support axle 15 is provided with roll 23 34。Such as Fig. 4 and Fig. 5, roll entirety becomes cylindric, and every a pair roller is divided into top roll 51 to be relative with the jog on the surface of lower roll 52, and the variation that angle is incremented by successively, and for by sheet material between its roll, described roll has 14 groups。First 12 groups that state roll is profiled section, latter 2 groups is leveling section, the hook-shaped formative stage that 1 to 5 group is tilted transition portion of its roll, 5 to 11 groups of described roll are outer incline transition portion and the formative stage of tilted transition portion junction, the formative stage that 6 to 13 groups are outer incline transition portion of described roll。
As shown in Figure 2 or Figure 3, the end at workbench is provided with automatic cutting equipment 18, is provided with roller sense from device 16 in automatic cutting equipment 18 front, and this device is connected by microcomputer control system 17。This equipment can be customized according to the specific requirement of user, and especially the span of some Administrative Area or public place ceiling is relatively larger, so wanting the relatively larger ceiling of customized lengths。Ceiling length manual measurement is easy for error, and automatic cutting equipment just can well grasp this point, it is possible to according to the parameter designed in advance by apart from surface trimming。Being sometimes prone to some faults occur in process of production, the produced economic loss more of a specified duration that especially delays on streamline is more big。In order to more accurately differentiate out of order approximate location faster, roller sense is adopted just to can solve this problem from alarm device。
As shown in Figure 2 and Figure 4, the main transmission of roll is to be controlled by servomotor 22, and a corresponding servomotor 22 of roll, servomotor 22 is connected with main spindle box deboost axle 21。Because the own wt reason of roll is so wanting a roll to join a servomotor 22, thus reaching the effect run well。
The invention belongs to fully-automatic equipment, the work process that processing metal ceiling is described below is as follows: the processing action of this equipment completes on a streamline, unreeling structure 7 is put steel plate materials 8, power-on also sets Cutting Length on microcomputer control system, the last volume end of unreeling structure 7 is provided with flattening partially, flattening partially releases the sheet material of certain length, and one end of panel material causes the charging aperture of automatic impact machine 9。By sending the charging aperture taken turns sheet material feeding elimination stress sixfold evener 10 after impact machine 9 punch, feed guide device 12 delivered to by the sheet material of the plate outlet of stress relieving equipment, the roll that sheet material is delivered on workbench 19 by feed guide device 12 enters Ban Chu, then pass through a series of roll molding on workbench, carry out the cutting of random length finally by milling roller end automatic cutting equipment 18, be above the workflow of whole equipment。
Claims (7)
1. the equipment being used for manufacturing metal ceiling, it is characterized in that: described metal ceiling is steel plate materials, it has at least two limits of a pair correspondence to be provided with bending, corresponding sides are provided with hook-shaped bending scrap (bridge) by another, described hook-shaped bending scrap (bridge) is divided into outer incline transition portion and tilted transition portion, described outer incline transition portion is connected with ceiling bottom surface, spend 110 to 120 with the angle of bottom surface, the limit that described tilted transition portion is connected with outer incline transition portion and ceiling plane perpendicular, tilted transition portion entirety becomes hook-shaped, its angle of inclination is 60 to 70 degree, the junction of every part is designed with chamfering；This equipment is on a streamline, it includes one for placing and the unreeling structure of uncoiling sheet metal, one eliminates stress sixfold evener, one plate forming workshop section, described plate forming workshop section forms a sheet path, it includes: workbench and the feed guide device above workbench, it is arranged in sequence with workbench after described feed guide device, described workbench is in the both sides of sheet material, workbench is provided with two corresponding up and down bi-lateral support axles, described bi-lateral support axle is provided with roll, the bottom surface of described ceiling smooth and 10 meters have the radian of 1, described metal ceiling entirety is rectangular。
2. according to claim 1 for manufacturing the equipment of metal ceiling, it is characterised in that: on described streamline, its front end eliminating stress sixfold evener is provided with automatic impact machine。
3. according to claim 1 for manufacturing the equipment of metal ceiling, it is characterized in that: described roll entirety becomes cylindric, and the jog on the surface of every a pair roller is relative, and the variation that angle is incremented by successively, for by sheet material between its roll, described roll has 14 groups。
4. according to claim 3 for manufacturing the equipment of metal ceiling, it is characterized in that: first 12 groups of described roll is profiled section, latter 2 groups is leveling section, the hook-shaped formative stage that 1 to 5 group is tilted transition portion of its roll, 5 to 11 groups of described roll are outer incline transition portion and the formative stage of tilted transition portion junction, the formative stage that 6 to 13 groups are outer incline transition portion of described roll。
5. according to claim 1 for manufacturing the equipment of metal ceiling, it is characterised in that: on described workbench, at least part of workbench is provided with the unilateral axle that supports, and the described unilateral axle that supports is inclined shaft。
6. according to claim 1 for manufacturing the equipment of metal ceiling, it is characterised in that: the end of described workbench is provided with automatic cutting equipment；Described being provided with roller sense from device in automatic cutting equipment front, this device is connected by microcomputer control system。
7. according to claim 1 for manufacturing the equipment of metal ceiling, it is characterised in that: the main transmission of its roll is by Serve Motor Control, and a corresponding servomotor of roll, servomotor is connected with main speed reduction box deboost axle。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110112261.9A CN102767260B (en) | 2011-05-03 | 2011-05-03 | The equipment of metal ceiling and making metal ceiling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110112261.9A CN102767260B (en) | 2011-05-03 | 2011-05-03 | The equipment of metal ceiling and making metal ceiling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102767260A CN102767260A (en) | 2012-11-07 |
| CN102767260B true CN102767260B (en) | 2016-06-22 |
Family
ID=47094808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110112261.9A Active CN102767260B (en) | 2011-05-03 | 2011-05-03 | The equipment of metal ceiling and making metal ceiling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102767260B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102191831B (en) * | 2011-05-06 | 2016-06-01 | 常健 | The equipment of metal ceiling and making metal ceiling |
| CN110359619A (en) * | 2018-03-26 | 2019-10-22 | 广州奥斯美建材科技有限公司 | A kind of metal ceiling discharged and store anion |
| CN108555094B (en) * | 2018-06-04 | 2023-08-29 | 惠州市诚业家具有限公司 | Laminate side edge curling equipment |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB564155A (en) * | 1942-09-07 | 1944-09-15 | Vultee Aircraft Inc | Composite structural metal panel |
| EP0141762B1 (en) * | 1983-10-10 | 1988-01-13 | Cegedur Societe De Transformation De L'aluminium Pechiney | Method and device for the manufacture of reinforced metallic strips |
| JPH07327765A (en) * | 1994-06-15 | 1995-12-19 | Oorisu Kk | Plate with curved surface outside angle |
| CN2553027Y (en) * | 2002-07-09 | 2003-05-28 | 薛定华 | Ceiling |
| FR2860816B1 (en) * | 2003-10-08 | 2006-03-17 | Arcelor Construction France | USABLE PLATE AS BUILDING ELEMENT AND WALL INCLUDING APPLICATION. |
| CN202227567U (en) * | 2011-05-03 | 2012-05-23 | 常健 | Metal ceiling and equipment for making same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA1123568A (en) * | 1979-12-19 | 1982-05-18 | Bernard Solomon | Preformed and nestable panels for roofs, walls and the like |
-
2011
- 2011-05-03 CN CN201110112261.9A patent/CN102767260B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB564155A (en) * | 1942-09-07 | 1944-09-15 | Vultee Aircraft Inc | Composite structural metal panel |
| EP0141762B1 (en) * | 1983-10-10 | 1988-01-13 | Cegedur Societe De Transformation De L'aluminium Pechiney | Method and device for the manufacture of reinforced metallic strips |
| JPH07327765A (en) * | 1994-06-15 | 1995-12-19 | Oorisu Kk | Plate with curved surface outside angle |
| CN2553027Y (en) * | 2002-07-09 | 2003-05-28 | 薛定华 | Ceiling |
| FR2860816B1 (en) * | 2003-10-08 | 2006-03-17 | Arcelor Construction France | USABLE PLATE AS BUILDING ELEMENT AND WALL INCLUDING APPLICATION. |
| CN202227567U (en) * | 2011-05-03 | 2012-05-23 | 常健 | Metal ceiling and equipment for making same |
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|---|---|
| CN102767260A (en) | 2012-11-07 |
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Effective date of registration: 20170706 Address after: 226500 Jiangsu city of Nantong province Rugao City Bai Pu Zhen Pu Xi Cun (12 groups belong to the company premises) Patentee after: Jiangsu Feier Electrical Technology Co., Ltd. Address before: 200011 Shanghai city Huangpu District Quxi Road No. 2 Lane 501, room 1802 Patentee before: Chang Jian |
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