CN111097900A - Casting device of rolling mill - Google Patents
Casting device of rolling mill Download PDFInfo
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- CN111097900A CN111097900A CN202010089670.0A CN202010089670A CN111097900A CN 111097900 A CN111097900 A CN 111097900A CN 202010089670 A CN202010089670 A CN 202010089670A CN 111097900 A CN111097900 A CN 111097900A
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- adjusting
- assembly
- lifting
- rolling mill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D37/00—Controlling or regulating the pouring of molten metal from a casting melt-holding vessel
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- Mechanical Engineering (AREA)
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Abstract
A rolling mill casting device comprises a base, a lifting assembly, a moving assembly, an adjusting assembly, a flow groove assembly and a controller, wherein the base, the lifting assembly, the moving assembly, the adjusting assembly and the flow groove assembly are sequentially connected, the controller is used for controlling the rolling mill casting device to operate, the adjusting assembly comprises adjusting supports, adjusting rods and adjusting weights, the two adjusting supports are arranged on the moving assembly, sensing devices are arranged on the adjusting supports, the adjusting weights are arranged between the two adjusting supports, the sensing devices are used for sensing the positions of the adjusting weights, the adjusting rods are movably connected with the adjusting supports and the adjusting weights, one end of each adjusting rod penetrates through the adjusting supports and the adjusting weights, a conical plug is arranged at the other end of each adjusting rod and is arranged on the flow groove assembly and used for controlling the opening and the flow of the flow groove assembly, the lifting assembly is used for adjusting the positions, the moving assembly is used for adjusting the position of the adjusting bracket in the horizontal direction. The rolling mill casting device is more accurate in adjustment precision.
Description
Technical Field
The invention relates to the field of wire and cable manufacturing, in particular to a rolling mill casting device.
Background
Current rolling mill casting device carries out liquid level control to the metal liquid through setting up the regulating lever, in the casting process, because reasons such as conjunctiva, it can upwarp gradually to adjust the pole height along with time, when the manual work with the chute, the conjunctiva clearance back, it can obviously descend to adjust the pole height, can't keep adjusting the position of pole, current generally sets up the bracing piece on adjusting the pole, set up the toper stopper on adjusting the pole, control the position at the weeping mouth through the bracing piece toper stopper, a flow for controlling the metal liquid, and then control the liquid level of metal liquid. However, during the casting process, the size of the conical plug can be changed due to the conjunctiva on the conical plug, and the liquid level control is inaccurate due to the adjustment of the single supporting rod.
Disclosure of Invention
In view of the above, it is necessary to provide a rolling mill casting device with high accuracy of liquid level control.
A rolling mill casting device comprises a base, a lifting assembly, a moving assembly, an adjusting assembly, a flow groove assembly and a controller, wherein the base, the lifting assembly, the moving assembly, the adjusting assembly and the flow groove assembly are sequentially connected, the controller is used for controlling the rolling mill casting device to operate, the adjusting assembly comprises adjusting supports, adjusting rods and adjusting weights, the two adjusting supports are arranged on the moving assembly, sensing devices are arranged on the adjusting supports, the adjusting weights are arranged between the two adjusting supports, the sensing devices are used for sensing the positions of the adjusting weights, the adjusting rods are movably connected with the adjusting supports and the adjusting weights, one end of each adjusting rod penetrates through the adjusting supports and the adjusting weights, a conical plug is arranged at the other end of each adjusting rod and is arranged on the flow groove assembly and used for controlling the opening and the flow of the flow groove assembly, the lifting assembly is used for adjusting the positions, the adjusting weight is arranged between the adjusting supports, the moving assembly is used for adjusting the position of the adjusting supports in the horizontal direction, and the adjusting weight is pushed by the adjusting supports to adjust the position of the adjusting weight on the adjusting rod.
Furthermore, the sensing device comprises an upper photoelectric switch and a lower photoelectric switch, the upper photoelectric switch and the lower photoelectric switch are arranged at one end of the adjusting bracket close to the moving assembly, and the upper photoelectric switch and the lower photoelectric switch are arranged on the corresponding adjusting bracket in a crossed manner.
Furthermore, a hollow-out part is arranged on the adjusting support, and a space for the adjusting rod to incline up and down is arranged in the hollow-out part.
Furthermore, a plurality of bulges are arranged on one side of the adjusting support opposite to the adjusting weight and used for pushing the adjusting weight.
Further, the chute subassembly includes runner and lower chute, go up the runner set up in the top of lower chute, be equipped with the weeping mouth on going up the runner, the toper stopper set up in the weeping mouth, one side of lower chute is equipped with the support wall, it is close to adjust the pole the one end of toper stopper set up in on the support wall.
Further, the launder component further comprises a casting mechanism, the casting mechanism is connected with the lower launder, the metal liquid in the lower launder flows into the casting mechanism for casting, a liquid level detector is arranged on the casting mechanism and used for detecting the liquid level height of the metal liquid in the casting mechanism.
Furthermore, the lifting assembly comprises a lifting main body, a lifting platform and a lifting motor, the lifting main body is fixed on the base, the lifting platform is arranged on the lifting main body, the lifting platform is provided with the moving assembly, and the lifting motor is connected with the lifting main body and used for controlling the lifting main body to lift.
Furthermore, both ends of the lifting path of the lifting main body are respectively provided with a travel switch and a proximity switch, and the proximity switch is arranged between the two travel switches and used for limiting the lifting position and the amplitude of the lifting main body.
Furthermore, the moving assembly comprises a screw rod assembly and a moving motor which are connected with each other, the screw rod assembly comprises a screw rod and a moving platform which are connected with each other, the moving platform is provided with the adjusting bracket, the moving motor is connected with the screw rod, and the moving motor drives the moving platform to move through the screw rod and further drives the adjusting bracket to move.
Further, the liquid level detector is a laser liquid level meter or a photoelectric liquid sensor.
Above-mentioned rolling mill casting device is through setting up lifting unit, removal subassembly and adjusting part, and the aperture of the weeping mouth of the equal adjustable sluice trough of vertical direction and vertical direction realizes the regulation control to the flow, makes the regulation precision more accurate, avoids adjusting error, and then promotes product quality.
Drawings
Fig. 1 is a schematic structural view of a rolling mill casting apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a position of an adjusting weight in an embodiment of the invention.
Description of the main elements
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
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.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, a casting device 100 of a rolling mill shown in fig. 1 includes a base 10, a lifting assembly 20, a moving assembly 30, an adjusting assembly 40, and a runner assembly 50, wherein the lifting assembly 20 is fixed on the base 10, the moving assembly 30 is fixed on the lifting assembly 20, the adjusting assembly 40 is disposed on the moving assembly 30, and a portion of the adjusting assembly 40 is disposed on the runner assembly 50. The rolling mill casting device 100 further comprises a controller, the controller is respectively connected with the lifting assembly 20, the moving assembly 30, the adjusting assembly 40 and the launder assembly 50, and the controller is used for controlling the operation of the lifting assembly 20, the moving assembly 30, the adjusting assembly 40 and the launder assembly 50. In one embodiment, the controller is a PLC controller.
The base 10 includes a supporting plate 11 and a supporting column 12, and the supporting column 12 is fixed on a side of the supporting plate 11 away from the lifting assembly 20. In one embodiment, the supporting columns 12 are respectively disposed at corner positions of the supporting plate 11. In one embodiment, a housing is further disposed on the base 10, and the lifting assembly 20, the moving assembly 30 and the adjusting assembly 40 are disposed in the housing.
The lifting assembly 20 comprises a lifting body 21, a lifting platform 22 and a lifting motor 23, the lifting body 21 is fixed on the base 10, the lifting platform 22 is installed at one end, far away from the base 10, of the lifting body 21, the moving assembly 30 is arranged on the lifting platform 22, and the lifting motor 23 is connected with the lifting body 21 and used for controlling the lifting body 21 to lift. In one embodiment, the lifting motor 23 is a stepping motor, and it should be understood that the lifting motor 23 is not limited to the stepping motor, and may be a servo motor, a brushless motor, an asynchronous motor, or the like.
Both ends of the lifting path of the lifting main body 21 are respectively provided with a travel switch and a proximity switch, and the proximity switches are oppositely arranged between the two travel switches. The travel switch is used for limiting the lifting amplitude of the lifting main body 21, and the phenomenon that the lifting amplitude is too high or the lowering amplitude is too low is avoided, so that the adjusting amplitude of the adjusting assembly 40 is too large, and the liquid level is not controlled. The proximity switch is used for further controlling the lifting stroke of the lifting main body 21, and the lifting amplitude of the lifting main body is ensured to be within a reasonable range. When the lifting body 21 approaches the proximity switch, the proximity switch controls the lifting of the lifting body 21 by sending a command to the lifting motor 23, and the lifting of the lifting body 21 can be controlled without contacting the lifting body 21 or applying any pressure. In one embodiment, the lifting body 21 is a scissor lift table. In another embodiment, the lifting body 21 may be a rail-type lifting table.
The moving assembly 30 includes a screw assembly 31 and a moving motor 32 connected to each other. The screw rod assembly 31 comprises a screw rod 311 and a moving platform 312, the moving platform 312 is connected with the screw rod 311, the adjusting assembly 40 is arranged on the moving platform 312, the moving motor 32 is connected with the screw rod 311, and the screw rod 311 is driven to rotate by the moving motor 32 so as to drive the moving platform 312 to move. In one embodiment, two ends of the screw 311 are respectively provided with a travel switch and a proximity switch, and the proximity switch is oppositely disposed between the two travel switches for controlling the moving range of the moving platform 312. In one embodiment, the moving motor 32 is a stepping motor, and it is understood that the lifting motor 23 is not limited to the stepping motor, and may be a servo motor, a brushless motor, an asynchronous motor, or the like.
It will be appreciated that the lift motor 23, the travel motor 32 and the corresponding travel and proximity switches are all electrically connected to the controller.
The adjusting assembly 40 includes an adjusting bracket 41, an adjusting rod 42 and an adjusting weight 43, the adjusting bracket 41 is disposed on the moving platform 312, one end of the adjusting rod 42 penetrates through the adjusting bracket 41 and the adjusting weight 43, and the other end is disposed on the chute assembly 50.
In an embodiment, the number of the adjusting brackets 41 is two, the adjusting brackets 41 are oppositely disposed on the moving platform 312, the adjusting weight 43 is installed between the adjusting brackets 41, a hollow portion is disposed on the adjusting bracket 41, and the adjusting rod 42 is disposed in the hollow portion. A sensing device is respectively arranged at a position of each adjusting bracket 41 close to the moving platform 312, the sensing device includes an upper photoelectric switch 411 and a lower photoelectric switch 412, and the upper photoelectric switch 411 and the lower photoelectric switch 412 are used for detecting the position of the adjusting weight 43 in the vertical direction. In one embodiment, the upper photoelectric switch 411 and the lower photoelectric switch 412 are disposed on the adjusting bracket 41 in a crossed manner, so as to ensure that the lowest edge of the adjusting weight 43 can be reliably detected. It will be appreciated that the upper and lower opto- electronic switches 411, 412 are both electrically connected to the controller.
Referring to fig. 2, fig. 2 is a schematic diagram illustrating positions of the adjusting weight 43 between the upper photoelectric switch 411 and the lower photoelectric switch 412. In one embodiment, the adjusting assembly 40 detects the position of the adjusting weight 43 in one period of 15 seconds, detects on/off signals corresponding to the upper photoelectric switch 411 and the lower photoelectric switch 412 at intervals of 500 milliseconds in one period of time, and blocks the signal between the corresponding upper photoelectric switch 411 and the corresponding lower photoelectric switch 412 by the adjusting weight 43 when the number of off signals of the corresponding upper photoelectric switch 411 and the corresponding lower photoelectric switch 412 is less than or equal to 5 times, which indicates that the position of the adjusting weight 43 is lower and the position of the adjusting bracket 41 is higher; when the number of times of the communication signals of the corresponding upper photoelectric switch 411 and the corresponding lower photoelectric switch 412 is more than or equal to 25 times, the signal between the corresponding upper photoelectric switch 411 and the corresponding lower photoelectric switch 412 is not blocked by the adjusting weight 43, which indicates that the position of the adjusting weight 43 is higher, and the position of the adjusting bracket 41 is lower, and when the two conditions are not met, indicates that the position of the adjusting weight 43 is proper.
When the position of the adjusting bracket 41 is higher, the lifting motor 23 controls the lifting body 21 to descend, and when the upper photoelectric switch 411 is turned off, the adjusting weight 43 is located below the upper photoelectric switch 411, and the distance of one descending end of the lifting body 21 is continuously controlled, so that the lowest edge of the adjusting weight 43 is located between the upper photoelectric switch 411 and the lower photoelectric switch 412. In one embodiment, the adjusting weight 43 is already under the upper photoelectric switch 411, and the distance that the lifting body 21 continues to descend is half of the distance between the upper photoelectric switch 411 and the lower photoelectric switch 412.
When the position of the adjusting bracket 41 is lower, the lifting motor 23 controls the lifting main body 21 to ascend, and when the lower photoelectric switch 412 is connected, the adjusting weight 43 is already above the lower photoelectric switch 412, and the distance of one ascending end of the lifting main body 21 is continuously controlled, so that the lowest edge of the adjusting weight 43 is located between the upper photoelectric switch 411 and the lower photoelectric switch 412. In one embodiment, the adjusting weight 43 is already above the lower photoelectric switch 412, and the distance that the lifting body 21 continues to rise is half of the distance between the upper photoelectric switch 411 and the lower photoelectric switch 412.
One end of the adjusting rod 42 is movably arranged in the hollow part, the other end of the adjusting rod is provided with a conical plug 421, and the conical plug 421 is arranged in the flow groove component 50. In one embodiment, the hollow portion has a space for the adjustment rod 42 to tilt up and down. The adjusting weight 43 is movably arranged on the adjusting rod 42, the moving platform 312 is driven to move by the moving motor 32, the adjusting support 41 on the moving platform 312 is driven to move, the adjusting weight 43 is pushed by the left and right movement of the adjusting support 41, the position of the adjusting weight 43 is moved, the adjusting rod 42 is inclined, and then the position of the conical plug 421 is adjusted to control the opening and the flow of the leakage port of the launder assembly 50. In an embodiment, a plurality of protrusions are disposed on a side of the adjusting bracket 41 opposite to the adjusting weight 43, so as to facilitate pushing the adjusting weight 43.
The runner assembly 50 comprises an upper runner 51, a lower runner 52 and a casting mechanism (not shown), wherein the upper runner 51 is arranged above the lower runner 52, the lower runner 52 is connected with the casting mechanism, and the metal liquid in the lower runner 52 flows into the casting mechanism for casting. The upper flow groove 51 is provided with a liquid leakage port 511, and the conical plug 421 is arranged in the liquid leakage port 511. A supporting wall 521 is arranged on one side of the lower chute 52, one end of the adjusting rod 42 close to the conical plug 421 is arranged on the supporting wall 521, and the supporting wall 521 serves as a fulcrum of the adjusting rod 42 in the adjusting process. In an embodiment, a liquid level detector (not shown) is disposed on the casting mechanism, and the liquid level detector is a laser liquid level meter or a photoelectric liquid sensor, and is configured to detect whether a liquid level height of the molten metal of the casting mechanism meets a requirement. It is understood that in another embodiment, the liquid level detector is disposed in the lower trough 52 for detecting whether the liquid level of the metal liquid in the lower trough 52 meets the requirement.
The liquid level detector is electrically connected with the controller, sends detected liquid level information to the controller, compares the detected liquid level information with standard liquid level information prestored in the controller, sends a control instruction to the lifting motor 23 and the moving motor 32 according to a comparison result, controls the lifting platform 22 to ascend or descend, controls the moving platform 312 to move leftwards or rightwards, further controls the positions of the adjusting weight 43 and the adjusting rod 42, and then controls the position of the conical plug 421 in the liquid leakage opening 511 so as to control the opening degree and the flow of the liquid leakage opening 511, so that the liquid level reaches the required height, and automatic control is realized.
It will be appreciated that the lift assembly 20 and the movement assembly 30 are adjustable simultaneously.
Above-mentioned rolling mill casting device 100 is through setting up lifting unit 20, removal subassembly 30 and adjusting part 40, and the aperture of the weeping mouth of basin can all be adjusted in vertical direction and vertical direction, realizes the regulation control to the flow, makes the regulation precision more accurate, avoids adjusting error, and then promotes product quality.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.
Claims (10)
1. A rolling mill casting device is characterized in that: the device comprises a base, a lifting assembly, a moving assembly, an adjusting assembly, a flow groove assembly and a controller, wherein the base, the lifting assembly, the moving assembly, the adjusting assembly and the flow groove assembly are sequentially connected, the controller is used for controlling the operation of a rolling mill casting device, the adjusting assembly comprises adjusting supports, adjusting rods and adjusting weights, the two adjusting supports are arranged on the moving assembly, sensing devices are arranged on the adjusting supports, the adjusting weights are arranged between the two adjusting supports, the sensing devices are used for sensing the positions of the adjusting weights, the adjusting rods are movably connected with the adjusting supports and the adjusting weights, one end of each adjusting rod penetrates through the adjusting supports and the adjusting weights, a conical plug is arranged at the other end of each adjusting rod and is arranged on the flow groove assembly and used for controlling the opening and the flow of the flow groove assembly, the lifting assembly is used for adjusting the positions of the adjusting supports in the vertical direction so as to adjust, the moving assembly is used for adjusting the position of the adjusting support in the horizontal direction, and the adjusting weight is pushed by the adjusting support so as to adjust the position of the adjusting weight on the adjusting rod.
2. The rolling mill casting apparatus of claim 1, wherein: the sensing device comprises an upper photoelectric switch and a lower photoelectric switch, the upper photoelectric switch and the lower photoelectric switch are arranged at one end, close to the moving assembly, of the adjusting bracket, and the upper photoelectric switch and the lower photoelectric switch are arranged on the corresponding adjusting bracket in a crossed mode.
3. The rolling mill casting apparatus of claim 1, wherein: the adjusting support is provided with a hollow part, and a space for the adjusting rod to incline up and down is arranged in the hollow part.
4. The rolling mill casting apparatus of claim 1, wherein: and a plurality of bulges are arranged on one side of the adjusting bracket opposite to the adjusting weight and used for pushing the adjusting weight.
5. The rolling mill casting apparatus of claim 1, wherein: the launder subassembly includes launder and lower chute, go up the chute set up in the top of lower chute, upward be equipped with the weeping mouth on the chute, the toper stopper set up in the weeping mouth, one side of lower chute is equipped with the support wall, it is close to adjust the pole the one end of toper stopper set up in on the support wall.
6. The rolling mill casting apparatus of claim 5, wherein: the launder subassembly still includes casting mechanism, casting mechanism with the lower chute is connected, the metal liquid in the lower chute flows in cast in the casting mechanism, be equipped with the liquid level detector on the casting mechanism, the liquid level detector is used for detecting the liquid level height of the metal liquid in the casting mechanism.
7. The rolling mill casting apparatus of claim 1, wherein: the lifting assembly comprises a lifting main body, a lifting platform and a lifting motor, the lifting main body is fixed on the base, the lifting platform is arranged on the lifting main body, the lifting platform is provided with the moving assembly, and the lifting motor is connected with the lifting main body and used for controlling the lifting main body to lift.
8. The rolling mill casting apparatus of claim 7, wherein: travel switches and proximity switches are respectively arranged at two ends of a lifting path of the lifting main body, and the proximity switches are arranged between the two travel switches and used for limiting the lifting position and amplitude of the lifting main body.
9. The rolling mill casting apparatus of claim 1, wherein: the mobile assembly comprises a screw rod assembly and a mobile motor which are connected with each other, the screw rod assembly comprises a screw rod and a mobile platform which are connected with each other, the mobile platform is provided with the adjusting bracket, the mobile motor is connected with the screw rod, and the mobile motor drives the mobile platform to move through the screw rod and further drives the adjusting bracket to move.
10. The rolling mill casting apparatus of claim 6, wherein: the liquid level detector is a laser liquid level meter or a photoelectric liquid sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010089670.0A CN111097900B (en) | 2020-02-12 | 2020-02-12 | Casting device of rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010089670.0A CN111097900B (en) | 2020-02-12 | 2020-02-12 | Casting device of rolling mill |
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| Publication Number | Publication Date |
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| CN111097900A true CN111097900A (en) | 2020-05-05 |
| CN111097900B CN111097900B (en) | 2021-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010089670.0A Active CN111097900B (en) | 2020-02-12 | 2020-02-12 | Casting device of rolling mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115889278A (en) * | 2022-12-03 | 2023-04-04 | 江苏铭鹏机械设备有限公司 | Rolling mill casting adjusting device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000035613A1 (en) * | 1998-12-16 | 2000-06-22 | Inductotherm Corp. | Pouring of molten metal into a mold |
| CN101367120A (en) * | 2008-09-26 | 2009-02-18 | 南昌大学 | Liquid level height control system for continuous directional solidification apparatus |
| CN103008629A (en) * | 2012-12-17 | 2013-04-03 | 金永管 | Casting machine |
| CN204842936U (en) * | 2015-06-12 | 2015-12-09 | 广东隆达铝业有限公司 | Online current stabilizer of aluminium liquid |
| CN205074482U (en) * | 2015-09-29 | 2016-03-09 | 广东远光电缆实业有限公司 | Chute of watering aluminium solution |
-
2020
- 2020-02-12 CN CN202010089670.0A patent/CN111097900B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000035613A1 (en) * | 1998-12-16 | 2000-06-22 | Inductotherm Corp. | Pouring of molten metal into a mold |
| CN101367120A (en) * | 2008-09-26 | 2009-02-18 | 南昌大学 | Liquid level height control system for continuous directional solidification apparatus |
| CN103008629A (en) * | 2012-12-17 | 2013-04-03 | 金永管 | Casting machine |
| CN204842936U (en) * | 2015-06-12 | 2015-12-09 | 广东隆达铝业有限公司 | Online current stabilizer of aluminium liquid |
| CN205074482U (en) * | 2015-09-29 | 2016-03-09 | 广东远光电缆实业有限公司 | Chute of watering aluminium solution |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115889278A (en) * | 2022-12-03 | 2023-04-04 | 江苏铭鹏机械设备有限公司 | Rolling mill casting adjusting device |
| CN115889278B (en) * | 2022-12-03 | 2023-12-26 | 江苏铭鹏机械设备有限公司 | Rolling mill casting adjusting device |
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| CN111097900B (en) | 2021-08-17 |
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Effective date of registration: 20230504 Address after: No. 3 North Industrial Avenue, Renshou Shigao District, Tianfu New District, Meishan City, Sichuan Province, 620500 Patentee after: SICHUAN TIANFU JIANGDONG TECHNOLOGY CO.,LTD. Address before: No.18 Chunzhong Road, Minhang District, Shanghai 201108 Patentee before: SHANGHAI ZHONGTIAN ALUMINIUM WIRE Co.,Ltd. Patentee before: JIANGSU ZHONGTIAN TECHNOLOGY Co.,Ltd. |
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