CN108858732B - Inner die for concrete prefabricated round pipe - Google Patents
Inner die for concrete prefabricated round pipe Download PDFInfo
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- CN108858732B CN108858732B CN201810823238.2A CN201810823238A CN108858732B CN 108858732 B CN108858732 B CN 108858732B CN 201810823238 A CN201810823238 A CN 201810823238A CN 108858732 B CN108858732 B CN 108858732B
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- support
- hinged
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- hinge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/76—Moulds
Abstract
The invention discloses a concrete prefabricated round tube inner die in the field of concrete processing, which comprises an inner die barrel formed by rolling plates, wherein a support rod device and a locking device are arranged in the inner die barrel; the support rod device comprises a plurality of groups of support rod assemblies which are arranged on the central screw rod in pairs, one end of each support rod assembly is hinged to the central screw rod, the other end of each support rod assembly is hinged to the inner mold cylinder, the end part of each support rod assembly hinged to the central screw rod is connected to the central screw rod through a transmission nut, and the moving directions of the support rod assemblies arranged in pairs are opposite; the locking device comprises a limiting seat fixed on the inner wall of the plate, a hinge support and a driving cylinder hinged on the inner wall of the plate, wherein a joint support is hinged on the hinge support, the other end of the joint support is hinged with a piston rod of the driving cylinder, and a supporting rod matched with the limiting seat is hinged on the joint support.
Description
Technical Field
The invention relates to a concrete production mold, in particular to a concrete prefabricated round pipe inner mold.
Background
The die sinking action process of the concrete precast circular tube production die in production and use is as follows: loosening the inner mold locking mechanism and contracting the inner mold; the mold closing action process is as follows: and opening the inner die and locking the inner die locking mechanism. Namely, before and after the die is opened and closed, the inner die needs to be loosened or locked; the opening and closing process adopts a lever power-assisted mode to realize the opening and closing, and the lever is connected on the inner die. Meanwhile, the existing locking mechanism is characterized in that a support and a top block are matched with bolts, the support is welded on a wedge block on one side of the die assembly of the inner die, the bolts are installed in screw holes of the support, the top block is welded on the wedge block on the other side of the die assembly of the inner die, and one set of the top block is distributed on the same cylindrical bus of the inner die every 200-300 mm. In operation, a worker is required to climb into the inner mold, back to the large-torque impact wrench, and unscrew or tighten dozens of bolts one by one to realize locking or loosening of the mold. The main problems are that the worker is required to climb into the inner mould and push the lever repeatedly by manpower to shrink the inner mould so as to separate the inner mould from the cement product. There are mainly four problems here:
firstly, the labor intensity is high, the labor efficiency is low, workers need to climb into the internal mold with the depth of several meters, and a lever and an impact wrench need to be operated;
secondly, the utilization efficiency of equipment is low, steam curing is carried out after pouring in the process, the temperature reaches about 80 ℃, a period of time is required to wait, workers can enter the die to carry out die opening operation, the operation difficulty is high, and the workload is also high;
thirdly, under the condition of low safety, even if a period of time for cooling is waited before the die is opened, the cooling speed in the die is very low due to the semi-closed space in the die, so that a common worker still needs to be subjected to high temperature of 50-60 ℃ when entering the die to operate, the temperature on the die body is higher, and the safety accident is easily caused by errors during operation;
fourthly, the working environment condition is severe, workers work in a high-temperature and non-ventilated environment at 50-60 ℃, and the workers are painful and not beneficial to physical and psychological health.
Disclosure of Invention
The invention aims to provide an inner die for a concrete prefabricated round pipe, which is more convenient, safe and reliable to open and close an inner die, and a locking mechanism enables the closing of an inner die cylinder to be more stable and reliable.
The purpose of the invention is realized as follows: an inner die for a concrete prefabricated round pipe comprises an inner die cylinder formed by rolling plates, wherein a support rod device and a locking device are arranged in the inner die cylinder;
the supporting rod device comprises a central screw rod, a plurality of groups of supporting rod assemblies are arranged on the central screw rod in pairs, one end of each supporting rod assembly is hinged to the central screw rod, the other end of each supporting rod assembly is hinged to the inner wall of the inner mold cylinder, the end parts of the supporting rod assemblies hinged to the central screw rod are connected to the central screw rod through transmission nuts in a threaded mode, and the moving directions of the supporting rod assemblies arranged in pairs are opposite;
the locking device comprises a limiting seat fixed on the inner wall of one end of the plate, a hinge support fixed on the inner wall of the other end of the plate and a driving cylinder hinged on the inner wall of the plate, wherein a joint support is hinged on the hinge support, the other end of the joint support is hinged with a piston rod of the driving cylinder, and a supporting rod matched with the limiting seat is hinged on the joint support.
The invention comprises two processes when working:
when die assembly is carried out: firstly, rotating a central screw to drive a transmission nut to do axial motion along the central screw, expanding an inner mold cylinder body through a support rod assembly hinged on the transmission nut, pulling a support rod when the support rod assembly reaches an expansion limit position to enable the support rod to swing to a position close to a limit seat, controlling a piston rod of a driving air cylinder to extend out, enabling a joint support to be pushed by the piston rod to rotate around a hinge support, and simultaneously pushing the support rod to enable the support rod to jack the limit seat, thereby completing the mold closing process of the inner mold cylinder body;
when the mold is opened: the retraction action of a piston rod of the driving air cylinder is controlled firstly, the piston rod pulls the joint support to rotate around the hinge support, meanwhile, the support rod is pulled to be separated from the limiting seat, the support rod is pulled to be swung out of the position of the limiting seat, then, the central screw rod is rotated to drive the transmission nut to do axial motion along the central screw rod, and the inner mold cylinder body is contracted through the support rod assembly hinged on the transmission nut, so that the mold opening process of the inner mold cylinder body is completed.
Compared with the prior art, the invention has the beneficial effects that: the central screw rod is matched with the support rod assembly to realize the expansion and contraction of the inner mold cylinder, so that the demolding process is realized, the inner mold cylinder is locked when matched with the upper locking device to clamp the mold, the locking is more reliable, the work is safer, meanwhile, the operation of workers is more convenient, and the labor intensity of the operation of the workers is reduced; the operation is not required to be carried out after the temperature in the die is reduced in the demolding process, so that the production efficiency is improved; the working personnel do not need to enter the inner die cylinder body for operation any more, so that the operation risk is reduced, and the operation is safer and more reliable; meanwhile, the moving directions of the pair of stay bar assemblies are oppositely arranged, so that axial forces of each pair of stay bar assemblies are mutually offset when the stay bar assemblies work, the integral mechanism is not in a high-strength stress state for a long time, the service life of each internal mechanism is prolonged, and meanwhile, the pull rod type demoulding device is separated from the connection part of two ends of a plate to the center of the plate when demoulding, so that the tension of a surface contact surface is smaller compared with the integral separation, demoulding is easier and more convenient, and the inner wall of a product is not damaged. The invention can be used in the manufacture of concrete round pipes.
In order to make the vaulting pole subassembly atress more even when the shrink, it is more convenient to operate, the vaulting pole subassembly is including fixing the lift seat in the periphery of drive nut, the periphery of lift seat evenly is provided with a plurality of interior hinges along circumference, interior hinge links to each other with outer hinge through the connecting rod, outer hinge is fixed on the inner wall of centre form barrel, outer hexagon nut is chooseed for use to the lift seat, and interior hinge is fixed on outer hexagon nut terminal surface, interior hinge, connecting rod, outer hinge all are provided with six.
For centre form barrel panel junction open and shut more conveniently, the leakproofness is better, panel both ends are fixed with interior voussoir and outer wedge respectively on the centre form barrel, and interior voussoir and outer wedge inclined plane overlap joint form the joint line together, seted up the recess on the inclined plane of interior voussoir, be provided with sealed the pad in the recess, spacing seat is fixed on the inner wall of voussoir including, and the hinge support is fixed on the inner wall of outer wedge, the pin joint of driving actuating cylinder and centre form barrel is located the centre form barrel inner wall that is close to outer wedge one side.
In order to strengthen the stability and the strength of the central screw structure, the operation is more convenient, the central screw is formed by combining a plurality of screws and a plurality of connecting shafts, the screws are fixedly connected with the connecting shafts at intervals, the top of the central screw is fixedly connected with a power input device, and the bottom of the central screw is connected on a bearing seat.
In order to ensure that the locking is more reliable and the operation is more convenient, the limiting seat, the hinge support, the joint support and the supporting rod are provided with a plurality of groups, wherein the joint support is connected with one end, hinged to the piston rod of the driving cylinder, of the driving cylinder in series through a first series shaft, and the piston rod of the driving cylinder is hinged to the first series shaft.
In order to enable the power transmission of the air cylinder to be more stable and reliable, the joint support comprises an L-shaped support plate, a series connection part is arranged at the end of one outer side of the support plate, a series connection hole which is connected in series through a first series connection shaft is formed in the series connection part, a hinge part is arranged at the other outer side of the support plate, a first hinge hole and a second hinge hole are formed in the hinge part, the second hinge hole is located between the first hinge hole and the series connection hole, the first hinge hole is hinged to the hinge support, the second hinge hole is hinged to the support rod, and reinforcing rib plates are arranged on the inner side of the support plate. The joint support with the structure ensures that the power of the driving air cylinder is stably transmitted to the support rod so as to ensure the stable work of the support rod, and the serial connection part and the hinge part are arranged on the outer side of the support plate, so that the driving air cylinder is stressed more uniformly during power transmission, and the working reliability of the invention is ensured.
In order to make the unlocking and locking operations more convenient and safer, the lateral parts of the supporting rods are provided with bosses, through holes are formed in the bosses, and second serial shafts which connect the supporting rods in series are arranged in the through holes in a penetrating mode.
In order to enable the supporting seat to be locked and separated from the limiting seat more conveniently, an arc-shaped groove is processed on the limiting seat, and a roller is arranged at the end part of the supporting rod matched with the limiting seat.
In order to ensure that the locking is more reliable, the driving cylinder is parallel to the supporting rod in phase when in a locking state. The structure that is parallel to each other makes each position atress can offset each other when locking, can not lead to driving actuating cylinder, joint support and bracing piece to take place to deflect because of the atress is uneven to influence locking.
Drawings
FIG. 1 is a top view of the present invention.
Fig. 2 is a schematic view of a matching structure of the locking device and the internal mold cylinder body in the invention.
Fig. 3 is a schematic view of the matching structure of the stay bar device and the internal mold cylinder body in the invention.
FIG. 4 is a schematic view of a connection structure of a pair of stay bar assemblies and a central screw rod according to the present invention
FIG. 5 is a schematic view of the connection structure of the central screw, the lifting seat, the inner hinge, the connecting rod and the outer hinge.
Fig. 6 is a schematic view of the locking device assembly of the present invention.
Fig. 7 is a schematic structural view of the joint support of the present invention.
Fig. 8 is a schematic view of the locking state of the locking device of the present invention.
Fig. 9 is a schematic view of the unlocking state of the locking device of the present invention.
FIG. 10 is a schematic view of the state of the stay bar device when the mold is opened.
Fig. 11 is a partial enlarged view of the locking device of the present invention.
FIG. 12 is a schematic view of the structure of the mold clamping line during mold opening of the present invention.
The device comprises an inner die cylinder body 1, an inner wedge block 101, an outer wedge block 102, a locking device 2, a driving cylinder 201, a limiting seat 202, a supporting rod 203, a roller 203a, a boss 203b, a through hole 203c, a hinge support 204, a joint support 205, a supporting plate 205a, a serial part 205b, a serial hole 205c, a hinged part 205d, a first hinged hole 205e, a second hinged hole 205f, a reinforcing rib plate 205g, a supporting rod device 3, a screw 301, a transmission nut 302, a lifting seat 303, an inner hinge 304, a connecting rod 305, a connecting shaft 306, an outer hinge 307, a power input device 4 and a bearing seat 5.
Detailed Description
The inner die for the concrete prefabricated round pipe comprises an inner die cylinder body 1 formed by rolling plates, wherein a support rod device 3 and a locking device 2 are arranged in the inner die cylinder body 1;
the support rod device 3 comprises a central screw rod, a plurality of groups of support rod components are arranged on the central screw rod in pairs, one end of each support rod component is hinged on the central screw rod, the other end of each support rod component is hinged on the inner wall of the inner die cylinder body 1, the end part of each support rod component hinged on the central screw rod is connected on the central screw rod through a transmission nut 302 in a threaded manner, the moving directions of a group of support rod components arranged in pairs are opposite to each other, the central screw rod is formed by combining a plurality of screw rods 301 and a plurality of connecting shafts 306, the screw rods 301 are fixedly connected with the connecting shafts 306 at intervals, the top of the central screw rod is fixedly connected with a power input device 4, the bottom of the central screw rod is connected on a bearing seat 5, each support rod component comprises a lifting seat 303 fixed on the periphery of the transmission nut 302, a plurality of inner hinges 304 are uniformly arranged on the periphery of the lifting, the lifting seat 303 selects an outer hexagon nut, the inner hinge 304 is fixed on the end face of the outer hexagon nut, six inner hinges 304, six connecting rods 305 and six outer hinges 307 are arranged, the inner wedge block 101 and the outer wedge block 102 are respectively fixed at two ends of a plate on the inner die cylinder 1, inclined faces of the inner wedge block 101 and the outer wedge block 102 are lapped together to form a joint line, a groove is formed in the inclined face of the inner wedge block 101, and a sealing gasket is arranged in the groove;
the locking device 2 comprises a limiting seat 202 fixed on the inner wall of the inner wedge block 101, a hinge support 204 fixed on the inner wall of the outer wedge block 102 and a driving air cylinder 201 hinged on the inner wall of the plate, the hinge point of the driving air cylinder 201 and the inner mold cylinder 1 is positioned on the inner wall of the inner mold cylinder 1 near one side of the outer wedge block 102, the hinge support 204 is hinged with a joint support 205, the joint support 205 comprises an L-shaped support plate 205a, one outer side end of the support plate 205a is provided with a serial connection part 205b, the serial connection part 205b is provided with a serial connection hole 205c connected in series through a first serial connection shaft, the other outer side of the support plate 205a is provided with a hinge part 205d, the hinge part 205d is provided with a first hinge hole 205e and a second hinge hole 205f, the second hinge hole 205f is positioned between the phases of the first hinge hole 205e and the serial connection hole 205c, the first hinge hole, the inner side of the supporting plate 205a is provided with a reinforcing rib plate 205g, the joint support 205 is further hinged with a supporting rod 203 matched with the limiting seat 202, the side part of the supporting rod 203 is provided with a boss 203b, the boss 203b is provided with a through hole 203c, a second serial shaft connecting a plurality of supporting rods 203 in series is arranged in the through hole 203c in a penetrating manner, an arc-shaped groove is processed on the limiting seat 202, the end part of the supporting rod 203 matched with the limiting seat 202 is provided with a roller 203a, the limiting seat 202, a hinge support 204, the joint support 205 and the supporting rod 203 are provided with a plurality of groups, wherein the joint support 205 and one end of the driving cylinder 201 hinged with a piston rod are connected in series through a first serial shaft, the driving cylinder 201 piston rod is hinged on the first serial shaft, and the driving cylinder 201.
The invention comprises two processes when working:
when die assembly is carried out: firstly, a central screw rod is rotated through a power input device 4, a group of transmission nuts 302 are driven to move oppositely along the axial direction of the central screw rod, the internal mold cylinder body 1 is unfolded through a stay bar component hinged on the transmission nuts 302, when the stay bar component reaches an unfolding limit position, a second serial shaft is pulled to drive a support bar 203 to swing to a position close to a limit seat 202, the piston rod of a driving cylinder 201 is controlled to extend out, the piston rod pushes the first serial shaft to move, so that a joint support 205 rotates around a hinge support 204, the rotation of the joint support 205 pushes the support bar 203 to jack the support bar into the limit seat 202, and the mold closing process of the internal mold cylinder body 1 is completed;
when the mold is opened: the retraction action of a piston rod of the driving cylinder 201 is controlled firstly, the piston rod pulls the first series shaft to act, so that the joint support 205 rotates around the hinge support 204, the supporting rod 203 is pulled to be separated from the limit seat 202, then the second series shaft is pulled to drive the supporting rod 203 to swing out of the position of the limit seat 202, the unlocking is completed, then the power input device 4 rotates the central screw rod to drive the group of transmission nuts 302 to move in opposite directions along the axial direction of the central screw rod, the inner mold cylinder body 1 is contracted through the supporting rod assembly hinged on the transmission nuts 302, so that the inner mold cylinder body 1 is contracted from the position of a joint line to two sides, and the mold opening process of the inner mold cylinder.
The present invention is not limited to the above-mentioned embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and modifications to some technical features without creative efforts according to the disclosed technical contents, and these substitutions and modifications are all within the protection scope of the present invention.
Claims (6)
1. The inner die for the concrete prefabricated round pipe is characterized by comprising an inner die barrel formed by rolling plates, wherein a support rod device and a locking device are arranged in the inner die barrel;
the supporting rod device comprises a central screw rod, a plurality of groups of supporting rod assemblies are arranged on the central screw rod in pairs, one end of each supporting rod assembly is hinged to the central screw rod, the other end of each supporting rod assembly is hinged to the inner wall of the inner mold cylinder, the end parts of the supporting rod assemblies hinged to the central screw rod are connected to the central screw rod through transmission nuts in a threaded mode, and the moving directions of the supporting rod assemblies arranged in pairs are opposite;
the locking device comprises a limiting seat fixed on the inner wall of one end of the plate, a hinge support fixed on the inner wall of the other end of the plate and a driving air cylinder hinged on the inner wall of the plate, wherein a joint support is hinged on the hinge support, the other end of the joint support is hinged with a piston rod of the driving air cylinder, a supporting rod matched with the limiting seat is also hinged on the joint support, a plurality of groups of limiting seat, hinge support, joint support and supporting rod are arranged, wherein the joint support is connected with one end hinged with a piston rod of the driving air cylinder in series through a first series shaft, the piston rod of the driving air cylinder is hinged on the first series shaft, the joint support comprises an L-shaped support plate, a series part is arranged at the outer side end of the support plate, a series hole connected in series through the first series shaft is arranged, the hinge part is provided with a first hinge hole and a second hinge hole, the second hinge hole is positioned between the first hinge hole and the serial hole, the first hinge hole is hinged with the hinge support, the second hinge hole is hinged with the support rod, the inner side of the support plate is provided with a reinforcing rib plate, the lateral part of the support rod is provided with a boss, the boss is provided with a through hole, and a second serial shaft which connects a plurality of support rods in series is arranged in the through hole in a penetrating manner.
2. The inner die for the concrete precast circular tube according to claim 1, wherein the supporting rod assembly comprises a lifting seat fixed on the periphery of a transmission nut, a plurality of inner hinges are uniformly arranged on the periphery of the lifting seat along the circumferential direction, the inner hinges are connected with outer hinges through connecting rods, the outer hinges are fixed on the inner wall of the inner die barrel, the outer hexagon nuts are selected for the lifting seat, the inner hinges are fixed on the end faces of the outer hexagon nuts, and six inner hinges, six connecting rods and six outer hinges are arranged.
3. The inner die for the concrete precast circular tube as claimed in claim 1 or 2, wherein an inner wedge block and an outer wedge block are respectively fixed at two ends of an upper plate of the inner die cylinder, inclined surfaces of the inner wedge block and the outer wedge block are lapped together to form a joint line, a groove is formed on the inclined surface of the inner wedge block, a sealing gasket is arranged in the groove, the limiting seat is fixed on the inner wall of the inner wedge block, a hinge support is fixed on the inner wall of the outer wedge block, and a hinge point of the driving cylinder and the inner die cylinder is located on the inner wall of the inner die cylinder close to one side of the outer wedge block.
4. The inner die for the concrete precast circular tube according to claim 1 or 2, wherein the central screw is formed by combining a plurality of screws and a plurality of connecting shafts, the screws and the connecting shafts are fixedly connected together at intervals, a power input device is fixedly connected to the top of the central screw, and the bottom of the central screw is connected to the bearing block.
5. The inner die for the concrete precast circular tube according to claim 1 or 2, wherein an arc-shaped groove is processed on the limiting seat, and a roller is arranged at the end part of the support rod matched with the limiting seat.
6. The inner mold for the concrete precast circular tube according to claim 1 or 2, wherein the driving cylinder is parallel to the supporting rod in phase when in the locking state.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810823238.2A CN108858732B (en) | 2018-07-25 | 2018-07-25 | Inner die for concrete prefabricated round pipe |
| PCT/CN2018/103096 WO2020019399A1 (en) | 2018-07-25 | 2018-08-29 | Prefabricated concrete round pipe internal mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810823238.2A CN108858732B (en) | 2018-07-25 | 2018-07-25 | Inner die for concrete prefabricated round pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108858732A CN108858732A (en) | 2018-11-23 |
| CN108858732B true CN108858732B (en) | 2020-10-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810823238.2A Active CN108858732B (en) | 2018-07-25 | 2018-07-25 | Inner die for concrete prefabricated round pipe |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108858732B (en) |
| WO (1) | WO2020019399A1 (en) |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4153232A (en) * | 1977-11-28 | 1979-05-08 | C.S. Johnson Company | Apparatus for actuating inner and outer forms of a concrete pipe forming mold |
| CN2578078Y (en) * | 2002-11-26 | 2003-10-08 | 株洲洗煤厂三产发展总公司机电设备安装维修实业公司 | Automatic bumper of cement pipe |
| CN2853353Y (en) * | 2005-12-16 | 2007-01-03 | 张勇 | Vertical vibration pipe mould |
| CN2866079Y (en) * | 2005-12-16 | 2007-02-07 | 张勇 | Inserting vibrating die |
| CN203636980U (en) * | 2014-01-02 | 2014-06-11 | 孔德玲 | Flue machine |
| CN106182397B (en) * | 2014-01-02 | 2018-05-25 | 江山锐意科技服务有限公司 | A kind of flue forming machine |
| CN104191519B (en) * | 2014-08-27 | 2016-08-17 | 江苏江扬建材机械有限公司 | The interior mould of a kind of small-bore PCCP pipe vertical machining device and processing method thereof |
| CN104647585A (en) * | 2015-02-11 | 2015-05-27 | 江苏邦威机械制造有限公司 | Vibrating steel mould for PCCP (Pre-stressed Concrete Cylinder Pipe) |
| CN106696075A (en) * | 2015-11-15 | 2017-05-24 | 重庆松瑞汽车销售有限公司 | Mechanical automatic opening-closing vertical inner die |
| CN206678167U (en) * | 2017-04-24 | 2017-11-28 | 江苏江扬建材机械有限公司 | Vertical external mold for pipe of concrete shaping |
| CN107030873A (en) * | 2017-04-25 | 2017-08-11 | 福清市平达建材制品有限公司 | A kind of internal model and the method that concrete pipe is manufactured using internal model |
| CN106965312A (en) * | 2017-05-16 | 2017-07-21 | 广东中建新型建筑构件有限公司 | A kind of prefabricated pipeline internal model of fast assembling-disassembling |
| CN107322784A (en) * | 2017-06-28 | 2017-11-07 | 江苏和天下建筑科技研究院有限公司 | Concrete prefabricated pipe external mold folding, locking device and its folding, locking method |
| CN207140031U (en) * | 2017-08-25 | 2018-03-27 | 河海大学 | A kind of wind-power electricity generation concrete filled steel tube tower section supporting construction and mould |
-
2018
- 2018-07-25 CN CN201810823238.2A patent/CN108858732B/en active Active
- 2018-08-29 WO PCT/CN2018/103096 patent/WO2020019399A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020019399A1 (en) | 2020-01-30 |
| CN108858732A (en) | 2018-11-23 |
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Effective date of registration: 20200903 Address after: 225000 Wuqiao Town Industrial Park, Jiangdu District, Yangzhou, Jiangsu Applicant after: JIANGSU SEPC BUILDING MATERIALS EQUIPMENT Co.,Ltd. Address before: 225000 Bai Xiang Garden, Bai Xiang Road, Hanjiang District, Yangzhou, Jiangsu 9-303 Applicant before: Shen Danping |
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