CN109142001B - Conductor extrusion device - Google Patents
Conductor extrusion device Download PDFInfo
- Publication number
- CN109142001B CN109142001B CN201811011780.4A CN201811011780A CN109142001B CN 109142001 B CN109142001 B CN 109142001B CN 201811011780 A CN201811011780 A CN 201811011780A CN 109142001 B CN109142001 B CN 109142001B
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- rotating rod
- conductor
- blanking
- rod
- workbench
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- 239000004020 conductor Substances 0.000 title claims abstract description 54
- 238000001125 extrusion Methods 0.000 title claims description 14
- 238000010438 heat treatment Methods 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 238000003825 pressing Methods 0.000 claims abstract description 24
- 238000005452 bending Methods 0.000 claims description 18
- 244000309464 bull Species 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 14
- 229920002379 silicone rubber Polymers 0.000 claims description 12
- 239000004945 silicone rubber Substances 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 10
- 229910000838 Al alloy Inorganic materials 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 2
- 239000012212 insulator Substances 0.000 abstract description 14
- 238000000926 separation method Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
Abstract
The invention discloses a conductor extruding device which comprises a workbench, wherein a blanking cavity is formed in the bottom of the workbench, a blanking mechanism is arranged in the blanking cavity, lead screws are arranged on two sides of the blanking mechanism, a pressing mechanism is arranged at the top of the workbench and comprises a first rotating rod and a second rotating rod which are arranged oppositely, gears which are meshed and connected with each other are arranged at one end of the first rotating rod and one end of the second rotating rod, and pressing plates are arranged on the inner sides of the first rotating rod and the second rotating rod. The invention utilizes the arrangement of the positive and negative motors and the gears to lead the rotation directions of the first rotating rod and the second rotating rod to be opposite, the second slide blocks at two sides drive the two press plates to move relatively, thereby the cable clamped and fixed at the inner side is twisted back and forth, the heating wires are heated simultaneously, the cable insulator is heated and gradually separated from the inner conductor, finally the conductor is ejected out through the core ejecting rod, and the ejected conductor is clamped by the blanking mechanism and is pulled out downwards along with the screw rod, thereby realizing the separation of the cable insulator and the conductor.
Description
Technical Field
The invention relates to the technical field of cable conductor leading-out devices, in particular to a conductor extruding device.
Background
When a high-voltage cable is produced in a factory, a slicing test of the cable insulation is required to check whether the insulation crosslinking degree is qualified. This test is performed by cutting a length of cable, withdrawing the conductor from the cable, and then slicing the insulation portion of the cable. The main difficulty is the exit of the conductor.
Some existing technologies perform conductor separation by reheating and then guiding out a cable, but when the method is reused, the cable is heated to a too high temperature due to direct contact between a heating plate and the cable, the cable is damaged and is more difficult to separate from the conductor, and the bonding strength between layers of cable insulators and between the layers of the cable insulators and the conductor is higher due to heating only, and the cable insulators and the conductor are also difficult to separate.
Therefore, it is necessary to invent a conductor extrusion apparatus to solve the above problems.
Disclosure of Invention
The invention aims to provide a conductor extrusion device, a forward and reverse motor drives a first rotating rod and a gear on the first rotating rod to rotate, the gear on the first rotating rod drives a gear on a second rotating rod to rotate, so that the rotating directions of the first rotating rod and the second rotating rod are opposite, second sliding blocks on two sides drive two pressing plates to move relatively, so that a fixed cable clamped on the inner side is twisted back and forth, a heating wire is heated simultaneously, a cable insulator is heated and gradually separated from an inner conductor, the conductor is ejected out through a core ejecting rod, after the conductor is ejected out for a section, a blanking mechanism clamps the conductor and downwards pulls out along with a screw rod, the separation of the cable insulator and the conductor is realized, and the problem in the background technology is solved.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a conductor extrusion device, includes the workstation, the workstation bottom is equipped with the unloading chamber, unloading intracavity portion is equipped with unloading mechanism, unloading mechanism both sides are equipped with the lead screw, the workstation top is equipped with swager and constructs, swager constructs including relative first bull stick and the second bull stick that sets up, first bull stick and second bull stick one end are equipped with the gear that intermeshing connects, first bull stick and second bull stick inboard all are equipped with the clamp plate, be equipped with the zone of heating on the clamp plate inside wall, be equipped with the silicon rubber pad on the zone of heating inside wall, swager constructs the top and is equipped with the ejector pin pole, ejector pin pole top is equipped with the ejector pin pneumatic cylinder.
Preferably, the blanking mechanism comprises a blanking barrel, an opening is formed in the top of the blanking barrel, a first sliding block is sleeved on the screw rod, and the blanking barrel is fixedly connected with the first sliding block.
Preferably, the inside backup pad that is equipped with of storage bucket down, the backup pad bottom is equipped with the double-layered material pneumatic cylinder, the fixed wedge that is equipped with in double-layered material pneumatic cylinder bottom, be equipped with the movable groove in the backup pad that double-layered material pneumatic cylinder both sides correspond, the movable groove is equipped with the board of bending, the wedge cooperatees with the inboard wall of the board of bending, the movable sleeve of bending is equipped with the axostylus axostyle, axostylus axostyle and storage bucket fixed connection.
Preferably, first bull stick one end is equipped with positive and negative motor, the first bull stick other end and second bull stick both ends all are equipped with the bearing, positive and negative motor and bearing all pass through support frame and workstation fixed connection, first bull stick and second bull stick outer wall are equipped with the external screw thread, the outside cover of external screw thread is equipped with the second slider, second slider inner wall is equipped with the internal thread with external screw thread matched with, the second slider is equipped with the roll adjustment pneumatic cylinder with the clamp plate junction.
Preferably, the heating layer comprises an aluminum alloy shell and a heating wire, and the heating wire is arranged inside the aluminum alloy shell.
Preferably, be equipped with the antiskid groove on the silicone rubber pad inside wall, the antiskid groove sets up to a plurality ofly and is straight line even interval distribution on the silicone rubber pad, antiskid groove and workstation parallel arrangement, top core pneumatic cylinder, blanking barrel and antiskid groove collineation setting.
Preferably, the ejector core rod is in a circular truncated cone shape, the top of the ejector core rod is provided with an installation block, the ejector core rod is in threaded connection with the installation block, and the installation block is fixedly connected with the ejector core hydraulic cylinder.
Preferably, the top of the top core hydraulic cylinder is provided with a top plate, four corners of the bottom of the top plate are provided with support columns, the support columns are fixedly connected with a workbench, one side of the workbench is provided with a touch display screen and a PLC, and the PLC is arranged at the bottom of the touch display screen.
The invention has the technical effects and advantages that:
1. the positive and negative motors are utilized to drive the first rotating rod and the gears on the first rotating rod to rotate, the gears on the first rotating rod drive the gears on the second rotating rod to rotate, so that the rotating directions of the first rotating rod and the second rotating rod are opposite, the second sliding blocks on two sides drive the two pressing plates to move relatively, so that a cable clamped and fixed on the inner side is twisted back and forth, the heating wires are simultaneously heated, a cable insulator is heated and gradually separated from an inner conductor, the conductor is ejected out through the core ejecting rod, after the conductor is ejected out for a section, the conductor is clamped by the blanking mechanism and is pulled out downwards along with the screw rod, and the separation of the cable insulator and the conductor is realized;
2. through the collinear arrangement of the core ejecting hydraulic cylinder, the blanking barrel and the anti-skidding groove, when the core ejecting rod ejects the conductor and when a bending plate in the blanking barrel clamps the conductor and moves downwards along with the first sliding block for discharging, the cable corresponds to the anti-skidding groove, so that the anti-skidding and anti-shedding functions of the cable insulator are achieved, and the conductor can be smoothly ejected and downwards pulled out;
3. the jacking rod is in threaded connection with the mounting block, so that the jacking rod with different diameters can be conveniently replaced, the cable clamping device is suitable for cables with different diameters, the distance adjusting hydraulic cylinder is arranged at the joint of the second sliding block and the pressing plate, the distance between the two pressing plates can be adjusted according to cables with different diameters, and the practicability is better;
4. be equipped with the silicone rubber pad through the zone of heating inside wall, play anti-skidding effect on the one hand, increase the friction of insulator and clamp plate for the conductor breaks away from, and on the other hand can avoid the cable directly to cause the condition emergence that the cable heated the high temperature and lead to the damage with the heating layer contact.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a top view of the swaging mechanism of the present invention.
Fig. 3 is a schematic structural view of the blanking mechanism of the present invention.
Fig. 4 is a schematic structural view of the silicone rubber pad of the present invention.
In the figure: 1 workstation, 2 unloading chamber, 3 unloading mechanisms, 4 lead screws, 5 swager constructs, 6 first bull stick, 7 second bull stick, 8 gears, 9 clamp plates, 10 zone of heating, 11 silicone rubber pads, 12 ejector pin poles, 13 ejector pin pneumatic cylinders, 14 blanking buckets, 15 first slider, 16 backup pads, 17 clamp material pneumatic cylinders, 18 wedge, 19 movable slots, 20 board of bending, 21 axostylus axostyle, 22 positive and negative motors, 23 second slider, 24 roll adjustment pneumatic cylinders, 25 antiskid groove, 26 installation piece, 27 support columns, 28 touch display screen, 29 PLC controller, 30 roof.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the conductor extrusion device comprises a workbench 1, a blanking cavity 2 is arranged at the bottom of the workbench 1, a blanking mechanism 3 is arranged inside the blanking cavity 2, lead screws 4 are arranged on two sides of the blanking mechanism 3, a material pressing mechanism 5 is arranged at the top of the workbench 1, the material pressing mechanism 5 comprises a first rotating rod 6 and a second rotating rod 7 which are oppositely arranged, one end of the first rotating rod 6 and one end of the second rotating rod 7 are provided with gears 8 which are mutually meshed and connected, pressing plates 9 are arranged on the inner sides of the first rotating rod 6 and the second rotating rod 7, a heating layer 10 is arranged on the inner side wall of each pressing plate 9, the heating layer 10 comprises an aluminum alloy shell and heating wires, the heating wires are arranged inside the aluminum alloy shell, silicone rubber pads 11 are arranged on the inner side wall of the heating layer 10, a mandrel rod 12 is arranged at the top of the material pressing mechanism 5, and the mandrel rod 12 is arranged in a, the top of the top core rod 12 is provided with an installation block 26, the top core rod 12 is in threaded connection with the installation block 26, the installation block 26 is fixedly connected with a top core hydraulic cylinder 13, the top core rods 12 with different diameters can be conveniently replaced, and therefore the cable fixing device is suitable for different cables, the top of the top core rod 12 is provided with the top core hydraulic cylinder 13, the top of the top core hydraulic cylinder 13 is provided with a top plate 30, four corners of the bottom of the top plate 30 are provided with support columns 27, the support columns 27 are fixedly connected with the workbench 1, one side of the workbench 1 is provided with a touch display screen 28 and a PLC 29, and the PLC 29 is arranged at the bottom of the touch display.
The first rotating rod 6 and the gear 8 on the first rotating rod are driven to rotate through the positive and negative motor 22, the gear 8 on the first rotating rod 6 drives the gear 8 on the second rotating rod 7 to rotate, so that the rotating directions of the first rotating rod 6 and the second rotating rod 7 are opposite, the second sliding blocks 23 on two sides drive the two pressing plates 9 to move relatively, so that the inner side of the inner side.
Example 2:
according to the conductor extrusion device shown in fig. 2, one end of the first rotating rod 6 is provided with the positive and negative motor 22, the other end of the first rotating rod 6 and two ends of the second rotating rod 7 are provided with bearings, the positive and negative motor 22 and the bearings are fixedly connected with the workbench 1 through the support frame, the outer walls of the first rotating rod 6 and the second rotating rod 7 are provided with external threads, the outer part of the external threads is sleeved with the second sliding block 23, the inner wall of the second sliding block 23 is provided with internal threads matched with the external threads, the joint of the second sliding block 23 and the pressing plate 9 is provided with the distance adjusting hydraulic cylinder 24, the distance between the two pressing plates 9 can be adjusted according to cables with different diameters, and the practicability is better;
according to the conductor extrusion device shown in fig. 3, the blanking mechanism 3 includes a blanking barrel 14, an opening is provided at the top of the blanking barrel 14, a first slider 15 is sleeved on the screw rod 4, the blanking barrel 14 is fixedly connected with the first slider 15, a support plate 16 is provided inside the blanking barrel 14, a material clamping hydraulic cylinder 17 is provided at the bottom of the support plate 16, a wedge 18 is fixedly provided at the bottom of the material clamping hydraulic cylinder 17, a movable groove 19 is provided on the support plate 16 corresponding to both sides of the material clamping hydraulic cylinder 17, a bending plate 20 is provided in the movable groove 19, the wedge 18 is matched with the inner side wall of the bending plate 20, a shaft rod 21 is movably sleeved on the bending plate 20, the shaft rod 21 is fixedly connected with the blanking barrel 14, when the material clamping hydraulic cylinder 17 drives the wedge 18 to move down, the wedge 18 can push out the bottoms of the bending plates 20 at both sides to both sides in the process of gradually moving down, so that the top of the bending plate 20 moves inward and can clamp the conductor;
according to the conductor extrusion device shown in fig. 4, the anti-slip grooves 25 are formed in the inner side wall of the silicone rubber pad 11, the anti-slip grooves 25 are arranged in a plurality of linear and uniformly distributed on the silicone rubber pad 11 at intervals, the anti-slip grooves 25 are parallel to the workbench 1, the core ejecting hydraulic cylinder 13, the blanking barrel 14 and the anti-slip grooves 25 are arranged in a collinear manner, when the core ejecting rod 12 ejects the conductor and when the bending plate 20 in the blanking barrel 14 clamps the conductor and follows the first sliding block 15 to move downwards for discharging, the cable corresponds to the anti-slip grooves 25, so that the anti-slip and anti-drop effects of the cable insulator are achieved, and the conductor is ejected and pulled out smoothly downwards.
The working principle of the invention is as follows:
referring to the attached drawings 1-3 of the specification, firstly, according to the diameter of the cable, the touch display screen 28 is operated, the PLC 29 controls the distance-adjusting hydraulic cylinder 24 to drive the pressing plates 9 to move, the distance between the two pressing plates 9 can be adjusted according to the cables with different diameters, after the distance is adjusted, the cable is placed between the two pressing plates 9, then the PLC 29 controls the distance-adjusting hydraulic cylinder 24 to drive the pressing plates 9 to press the cable tightly, then the positive and negative motors 22 are controlled to drive the first rotating rod 6 and the gear 8 on the first rotating rod 6 to rotate, the gear 8 on the first rotating rod 6 drives the gear 8 on the second rotating rod 7 to rotate, so that the first rotating rod 6 and the second rotating rod 7 rotate in opposite directions, the second sliding blocks 23 on both sides drive the two pressing plates 9 to move relatively, so that the cable clamped and fixed on the inner side is twisted back and forth, and the heating wires are simultaneously heated, so, finally, the core ejecting rod 12 is driven to move downwards by the core ejecting hydraulic cylinder 13, the conductor is ejected downwards, after a section of the conductor is ejected, the clamping hydraulic cylinder 17 drives the wedge-shaped block 18 to move downwards, the wedge-shaped block 18 ejects the bottoms of the bending plates 20 at two sides to two sides in the process of gradually moving downwards, so that the top of the bending plate 20 moves inwards to clamp the conductor, then the screw rod 4 works, the bending plate 20 clamps the conductor and moves downwards along with the first sliding block 15, the conductor is pulled out downwards, and the separation of the cable insulator and the conductor is realized;
referring to the description and the attached drawing 4, when the top core rod 12 ejects the conductor and when the bending plate 20 inside the blanking barrel 14 clamps the conductor and moves downwards along with the first sliding block 15 for discharging, the cable corresponds to the anti-slip groove 25, so that the anti-slip and anti-drop functions of the cable insulator are achieved, and the conductor can be smoothly ejected and pulled downwards.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (5)
1. A conductor extrusion device comprises a workbench (1), and is characterized in that: the automatic feeding device is characterized in that a blanking cavity (2) is arranged at the bottom of the workbench (1), a blanking mechanism (3) is arranged inside the blanking cavity (2), lead screws (4) are arranged on two sides of the blanking mechanism (3), a material pressing mechanism (5) is arranged at the top of the workbench (1), the material pressing mechanism (5) comprises a first rotating rod (6) and a second rotating rod (7) which are oppositely arranged, gears (8) which are meshed and connected with each other are arranged at one ends of the first rotating rod (6) and the second rotating rod (7), pressing plates (9) are arranged on the inner sides of the first rotating rod (6) and the second rotating rod (7), a heating layer (10) is arranged on the inner side wall of each pressing plate (9), a silicone rubber pad (11) is arranged on the inner side wall of each heating layer (10), a top core rod (12) is arranged at the top of the material pressing mechanism (5), and a top core hydraulic cylinder;
the blanking mechanism (3) comprises a blanking barrel (14), an opening is formed in the top of the blanking barrel (14), a first sliding block (15) is sleeved on the screw rod (4), and the blanking barrel (14) is fixedly connected with the first sliding block (15);
a supporting plate (16) is arranged inside the blanking barrel (14), a clamping hydraulic cylinder (17) is arranged at the bottom of the supporting plate (16), a wedge block (18) is fixedly arranged at the bottom of the clamping hydraulic cylinder (17), movable grooves (19) are formed in the supporting plate (16) corresponding to the two sides of the clamping hydraulic cylinder (17), a bending plate (20) is arranged in each movable groove (19), the wedge block (18) is matched with the inner side wall of the bending plate (20), a shaft lever (21) is movably sleeved on the bending plate (20), and the shaft lever (21) is fixedly connected with the blanking barrel (14);
first bull stick (6) one end is equipped with positive and negative motor (22), first bull stick (6) other end and second bull stick (7) both ends all are equipped with the bearing, positive and negative motor (22) and bearing all pass through support frame and workstation (1) fixed connection, first bull stick (6) and second bull stick (7) outer wall are equipped with the external screw thread, the outside cover of external screw thread is equipped with second slider (23), second slider (23) inner wall is equipped with the internal thread with external screw thread matched with, second slider (23) are equipped with roll adjustment pneumatic cylinder (24) with clamp plate (9) junction.
2. The conductor extrusion apparatus of claim 1, wherein: the heating layer (10) comprises an aluminum alloy shell and a heating wire, and the heating wire is arranged inside the aluminum alloy shell.
3. The conductor extrusion apparatus as set forth in claim 2, wherein: be equipped with on silicone rubber pad (11) inside wall anti-skidding groove (25), anti-skidding groove (25) set up to a plurality ofly and be straight line even interval distribution on silicone rubber pad (11), anti-skidding groove (25) and workstation (1) parallel arrangement, top core pneumatic cylinder (13), unloading bucket (14) and anti-skidding groove (25) collineation setting.
4. The conductor extrusion apparatus of claim 3, wherein: the ejector core rod (12) is in a circular truncated cone shape, the top of the ejector core rod (12) is provided with an installation block (26), the ejector core rod (12) is in threaded connection with the installation block (26), and the installation block (26) is fixedly connected with the ejector core hydraulic cylinder (13).
5. The conductor extrusion apparatus of claim 4, wherein: top core pneumatic cylinder (13) top is equipped with roof (30), roof (30) bottom four corners is equipped with support column (27), support column (27) and workstation (1) fixed connection, workstation (1) one side is equipped with touch display screen (28) and PLC controller (29), PLC controller (29) set up in touch display screen (28) bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811011780.4A CN109142001B (en) | 2018-08-31 | 2018-08-31 | Conductor extrusion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811011780.4A CN109142001B (en) | 2018-08-31 | 2018-08-31 | Conductor extrusion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109142001A CN109142001A (en) | 2019-01-04 |
| CN109142001B true CN109142001B (en) | 2021-05-11 |
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ID=64825952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811011780.4A Active CN109142001B (en) | 2018-08-31 | 2018-08-31 | Conductor extrusion device |
Country Status (1)
| Country | Link |
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| CN (1) | CN109142001B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113532998A (en) * | 2021-07-28 | 2021-10-22 | 广东电网有限责任公司 | Cable insulation layer thickness sample-making core-ejecting mechanism |
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| CN207765892U (en) * | 2017-11-13 | 2018-08-24 | 胡朝海 | A kind of high-efficient electric engineering punck-down block |
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| JP5257873B2 (en) * | 2010-01-18 | 2013-08-07 | 東京アイデアル株式会社 | Electric wire strip device |
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|---|---|---|---|---|
| WO2000008501A1 (en) * | 1998-08-05 | 2000-02-17 | Siemens Production And Logistics Systems Ag | Device for removing a protective layer of a light duct |
| KR200403515Y1 (en) * | 2005-09-21 | 2005-12-09 | 성지산업 주식회사 | Covering removal machine for electric wire |
| CN201518400U (en) * | 2009-08-19 | 2010-06-30 | 刘玉俊 | Opposite-rubbing type coaxial cable stripping machine |
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| CN109142001A (en) | 2019-01-04 |
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Denomination of invention: Conductor pressing out device Effective date of registration: 20211130 Granted publication date: 20210511 Pledgee: Bank of Communications Limited Huainan Branch Pledgor: HUAINAN WENFENG SPACE CABLE Co.,Ltd. Registration number: Y2021980013633 |
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Date of cancellation: 20221018 Granted publication date: 20210511 Pledgee: Bank of Communications Limited Huainan Branch Pledgor: HUAINAN WENFENG SPACE CABLE Co.,Ltd. Registration number: Y2021980013633 |
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Address after: 232007 Jianshe North Road, Huainan economic and Technological Development Zone, Anhui Patentee after: Huainan Wenfeng Photoelectric Technology Co.,Ltd. Address before: 232007 Jianshe North Road, Huainan economic and Technological Development Zone, Anhui Patentee before: HUAINAN WENFENG SPACE CABLE Co.,Ltd. |
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Address after: 232007 No. 6, Jixing Road, Huainan Economic and Technological Development Zone, Anhui Province Patentee after: Huainan Wenfeng Photoelectric Technology Co.,Ltd. Address before: 232007 Jianshe North Road, Huainan economic and Technological Development Zone, Anhui Patentee before: Huainan Wenfeng Photoelectric Technology Co.,Ltd. |
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