CN217894602U - Automatic loading and unloading mechanism of heavy coiled material double screw - Google Patents
Automatic loading and unloading mechanism of heavy coiled material double screw Download PDFInfo
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- CN217894602U CN217894602U CN202222027396.1U CN202222027396U CN217894602U CN 217894602 U CN217894602 U CN 217894602U CN 202222027396 U CN202222027396 U CN 202222027396U CN 217894602 U CN217894602 U CN 217894602U
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- 239000000463 material Substances 0.000 title claims abstract description 83
- 230000007246 mechanism Effects 0.000 title claims abstract description 23
- 238000007599 discharging Methods 0.000 claims abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 46
- 230000005540 biological transmission Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 description 13
- 230000006872 improvement Effects 0.000 description 9
- 230000008569 process Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 229920002522 Wood fibre Polymers 0.000 description 4
- 239000002025 wood fiber Substances 0.000 description 4
- 230000003028 elevating effect Effects 0.000 description 3
- 229920000877 Melamine resin Polymers 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model discloses a heavy coiled material double-screw type automatic feeding and discharging mechanism, which belongs to the technical field of facing plate coiled material conveying equipment and comprises a frame, a lifting device and a material carrying assembly, wherein the lifting device and the material carrying assembly are arranged on the frame; the loading assembly is used for loading coiled materials, lifting slide blocks are further arranged on two sides of the loading assembly, lifting guide rails extending in the vertical direction are correspondingly arranged on the rack, and the lifting slide blocks are connected with the lifting guide rails in a matched mode; and the material loading component vertically ascends and descends along the lifting guide rail under the driving of each nut. Adopt double-screw rod elevation structure, realize the automatic unloading operation of going up of heavy coiled material, reliable and stable has effectively reduced operation personnel's intensity of labour, and the operation security can be guaranteed.
Description
Technical Field
The utility model belongs to the technical field of decorative panel coiled material conveying equipment, concretely relates to unloading mechanism in heavy coiled material double screw is automatic.
Background
The melamine veneer is called triamine plate for short and is also called veneer. The flexible triamine veneer sheet is formed by laminating wood fiber paper mixed with glue and melamine impregnated paper at high temperature. Due to their good wear, water and high temperature resistance, flexible triamine faced sheets have gradually become an essential part of modern custom furniture.
In the process of flexible triamine veneer sheet hot pressing, because the weight of wood fiber paper coiled material is overweight, can't adopt the manpower transport, generally need to get or hoist the coiled material fork to receive unwinding equipment through fork truck or lifting device on, the manual unloading is gone up and is wasted time and energy considerably, and degree of automation is lower, and has great potential safety hazard to the operating personnel. In the prior art, chinese patent publication No. CN204802722U provides a pneumatic constant-tension coil uncoiling lifting deviation correcting device, one end of a lifting swing arm is connected to a piston end of a lifting cylinder, a tail end of the lifting cylinder and the other end of the lifting swing arm are connected to a rack through rotating shafts respectively, and one end of the lifting swing arm is provided with an uncoiling shaft. The device solves the problem of difficult feeding and discharging of the coiled material to a certain extent, but because the heaviest weight of the wood fiber paper coiled material can reach 1000kg, the situation that the lifting force of the device is not enough and the like is easily caused by adopting the cylinder as a lifting actuating mechanism, the conveying requirement of the feeding and discharging of the heavy coiled material is difficult to meet, and the application range is small; in addition, pneumatic element is in the in-process of promoting the coiled material, in case atmospheric pressure is not enough, promotes heavy coiled material half a journey and will fall rapidly, has great potential safety hazard.
Therefore, to the problem that exists among the prior art, need urgently provide a two-screw automatic unloading mechanism of going up for carrying heavy coiled material to solve the heavy transport operation demand of heavy coiled material.
Disclosure of Invention
To the problem among the correlation technique, the utility model provides a heavy coiled material double-screw type goes up unloading mechanism in automation to overcome the above-mentioned technical problem that current correlation technique exists.
The technical scheme of the utility model is realized like this: a heavy coiled material double-screw type automatic loading and unloading mechanism comprises a frame, a lifting device and a loading component on the frame,
the lifting device comprises a left screw rod and a right screw rod which are respectively arranged at two sides of the rack, and a driving module for driving the left screw rod and the right screw rod to synchronously rotate, wherein left and right nuts are correspondingly arranged on the left and right screw rods, and each nut is in transmission connection with the material loading assembly;
the material loading assembly is used for loading coiled materials, lifting slide blocks are further arranged on two sides of the material loading assembly, a lifting guide rail extending in the vertical direction is correspondingly arranged on the rack, and the lifting slide blocks are connected with the lifting guide rail in a matched mode; the material loading component vertically ascends and descends along the lifting guide rail under the driving of each nut.
The utility model discloses in, adopt double-screw rod elevation structure, realize the unloading operation in the automation of heavy coiled material, reliable and stable has effectively reduced operation personnel's intensity of labour, and the operation security can be guaranteed.
As a further improvement of the above scheme, the driving module comprises a lifting motor, a left speed reducer and a right speed reducer, an output shaft of the lifting motor is in driving connection with an input end of the left speed reducer/the right speed reducer, a synchronizing shaft is arranged between the input end of the left speed reducer and the input end of the right speed reducer, the synchronizing shaft is in transmission connection, and output ends of the left speed reducer and the right speed reducer are respectively in driving connection with the left screw rod and the right screw rod correspondingly;
it should be noted that, through the synchronous elevating action of single drive module drive twin-screw, can ensure elevating gear's operation synchronism for the unloading simple operation is reliable in the last unloading of heavy coiled material, satisfies the high efficiency operation demand in the decorative board actual production.
As a further improvement of the above scheme, the synchronizing shaft is further coated with a roller cover, and the roller cover is of a hollow tubular structure and extends along the axial direction of the synchronizing shaft;
it should be noted that the synchronizing shaft is arranged between the two speed reducers, is driven to rotate by the lifting motor and serves as a structural component for power transmission, the output torque is large, and once the synchronizing shaft is accidentally touched, the consequences are unreasonable; furthermore, the hollow tubular roller cover is arranged to isolate the synchronizing shaft, so that the conditions such as safety accidents are effectively avoided.
As a further improvement of the scheme, the left speed reducer and the right speed reducer are worm and gear speed reducers;
it should be noted that, the worm gear reducer can effectively reduce the speed and increase the torque, so that the lifting process of the heavy coiled material is stable and reliable, and the safety and the high efficiency of the loading and unloading function are ensured.
As a further improvement of the above scheme, the material loading assembly comprises a seat plate, the seat plate is arranged along a vertical plane, the lifting slide block is arranged on one side end face of the seat plate and matched with the lifting guide rail, two supports are arranged on the other side end face of the seat plate, and the two supports can slide in opposite directions or away from each other along the width direction of the seat plate.
As a further improvement of the above scheme, an inflatable shaft is arranged on one support, a locking chuck adapted to the inflatable shaft is arranged on the other support, and the coiled material is oppositely clamped by the inflatable shaft and the locking chuck; the device further comprises a driving device, wherein the driving device is in driving connection with the locking chuck, and the driving device drives the coiled material to rotate forwards, reversely or stop rotating.
It should be noted that, heavy coiled material operates inconveniently, efficiency is lower at last unloading in-process, and is further, sets up inflatable shaft and locking dop, through the clamping action in opposite directions between them, can effectively guarantee that heavy coiled material can stably promote or descend at last unloading in-process, greatly reduced workman's intensity of labour, improved production efficiency, simultaneously, also avoided situations such as incident.
As a further improvement of the above solution, the coil has a weight in the range of 100kg to 1500kg.
As a further improvement of the scheme, an upper support and a lower support which are distributed along the vertical direction are respectively arranged on two sides of the rack, the upper ends of the left screw rod and the right screw rod are rotatably connected with the upper support, and the lower ends of the left screw rod and the right screw rod are rotatably connected with the lower support.
As a further improvement of the above scheme, two limit sensors distributed along the vertical direction are respectively arranged on the lifting guide rails on the two sides of the rack, the lifting slide block is positioned between the two limit sensors, and the limit sensors are microswitches or proximity switches;
in order to improve the automation of the screw lifting of the heavy coiled material, two limit sensors are arranged, in-place signals are detected by the limit sensors, the stop of the lifting motor is controlled in time, and the safety accidents of 'top punching' or 'bottom scraping' of the lifting device and the like are effectively avoided.
As a further improvement of the scheme, the bottoms of the two sides of the rack are also provided with lengthened foot plates, and the lengthened foot plates extend along one side where the coiled material is located;
it should be noted that the heavy coiled material is similar to a cantilever beam structure in the lifting process, and the moment borne by the support and the rack is large; furthermore, the lengthened foot plate is arranged to extend along the direction of the coiled material, so that the automatic feeding and discharging mechanism is effectively prevented from being subjected to dangerous conditions such as single-side dumping.
The utility model has the advantages that:
(1) The automatic feeding and discharging operation of the heavy coiled materials is realized by adopting a double-screw lifting structure, the operation is stable and reliable, the labor intensity of operating personnel is effectively reduced, and the operation safety is ensured;
(2) The single driving module drives the double screws to synchronously lift, so that the operation synchronism of the lifting device is ensured, the operation is convenient and reliable, and the high-efficiency operation requirement in the actual production of the veneer is met;
(3) Set up left lead screw, right lead screw with the bedplate drive is connected to carry on heavy coiled material through the bedplate, the vertical transport operation of heavy coiled material is realized to the direction supporting role of cooperation elevator slide lifting guide, and application scope is wide, and application prospect is showing fairly.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is a perspective view of another perspective of the present invention;
FIG. 3 is a schematic diagram of the operation of the present invention;
reference numerals are as follows:
1. a frame; j1, heavy coiled material;
21. a loading assembly; 211. a seat plate; 212. a support; 213. an air expansion shaft; 214. locking the chuck; 215. a drive device;
22. a lifting device;
221. a screw rod; 221a, a left screw rod; 221b, a right screw rod;
222. a nut; 222a, a left nut; 222b, a right nut;
223. a speed reducer; 223a, a left reducer; 223b, a right reducer;
224. a lifting motor; 225. a synchronizing shaft;
231. an upper bracket; 232. a lower bracket;
24. lengthening the foot plate;
251. a lifting slide block; 252. and lifting the guide rail.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1-3, a heavy coiled material double-screw automatic loading and unloading mechanism is mainly used for loading and unloading operations of an unreeling mechanism and a reeling mechanism of a heavy coiled material, and includes a frame 1, a lifting device 22 and a loading assembly 21 on the frame 1, in this embodiment, the coiled material is a wood fiber paper coiled material, and is applied to a process of hot-pressing a flexible triamine facing thin plate, specifically, the weight range of the coiled material is 100 kg-1500 kg.
The lifting device 22 comprises a left screw rod 221a and a right screw rod 221b which are respectively arranged at two sides of the frame 1, and a driving module which drives the left screw rod 221a and the right screw rod 221b to synchronously rotate,
in this embodiment, the driving module includes a lifting motor 224, a left reducer 223a and a right reducer 223b, an output shaft of the lifting motor 224 is in driving connection with an input end of the left reducer 223 a/the right reducer 223b, in this embodiment, the lifting motor 224 is preferably a 1.5kw servo motor, a motor torque of 1.5kw is large, noise is small, control is accurate, and a production requirement for lifting heavy coiled materials is met.
Be equipped with a synchronizing shaft 225 between the input of left reduction gear 223a and the input of right reduction gear 223b, through synchronizing shaft 225 transmission is connected, need explain that, through the synchronous lift action of single drive module drive twin-screw, can ensure elevating gear 22's operation synchronism for the last unloading simple operation of heavy coiled material is reliable, satisfies the high efficiency operation demand in the decorative board actual production.
In this embodiment, the synchronizing shaft 225 is further covered with a roller cover, and the roller cover is a hollow tubular structure and extends along the axial direction of the synchronizing shaft 225; it should be noted that the synchronizing shaft 225 is disposed between the two speed reducers 223, and is driven to rotate by the lifting motor 224, and as a structural component for power transmission, the output torque is large, and once the synchronizing shaft is accidentally touched, the consequences are unreasonable; furthermore, the hollow tubular roller cover is arranged to isolate the synchronizing shaft 225, so that the occurrence of conditions such as safety accidents is effectively avoided.
The output ends of the left reducer 223a and the right reducer 223b are respectively in driving connection with the left screw rod 221a and the right screw rod 221b correspondingly; specifically, the left reducer 223a and the right reducer 223b are worm gear reducers 223; the two sides of the frame 1 are respectively provided with an upper bracket 231 and a lower bracket 232 which are distributed along the vertical direction, the upper ends of the left screw rod 221a and the right screw rod 221b are rotatably connected with the upper bracket 231, and the lower ends of the left screw rod 221a and the right screw rod 221b are rotatably connected with the lower bracket 232. It should be noted that, the worm gear reducer 223 is adopted to effectively reduce the speed and increase the torque, so that the lifting process of the heavy coiled material is stable and reliable, and the safety and the high efficiency of the loading and unloading function are ensured.
A left nut 222a and a right nut 222b are correspondingly arranged on the left screw rod 221a and the right screw rod 221b, and each nut 222 is in transmission connection with the material loading assembly 21;
the loading assembly 21 is used for loading coiled materials, lifting slide blocks 251 are further arranged on two sides of the loading assembly 21, a lifting guide rail 252 extending in the vertical direction is correspondingly arranged on the rack 1, and the lifting slide blocks 251 and the lifting guide rail 252 are connected in a matched manner; the loading assembly 21 is driven by each nut 222 to vertically move up and down along the lifting guide rail 252.
In this embodiment, the material loading assembly 21 includes a seat plate 211, the seat plate 211 is disposed along a vertical plane, the lifting slider 251 is disposed on one side end surface of the seat plate 211, and is matched with the lifting guide rail 252, and two supports 212 are disposed on the other side end surface of the seat plate 211, and the two supports 212 can slide in opposite directions or in opposite directions along the width direction of the seat plate 211.
In this embodiment, an inflatable shaft 213 is disposed on one of the supports 212, a locking chuck 214 adapted to the inflatable shaft 213 is disposed on the other support 212, and the coiled material is oppositely clamped by the inflatable shaft 213 and the locking chuck 214; and the device also comprises a driving device 215, wherein the driving device 215 is connected with the locking chuck 214 in a driving way, and the driving device 215 drives the coiled material to rotate forwards, reversely or stop rotating.
It should be noted that, heavy coiled material is inconvenient to operate in the feeding and discharging process, the efficiency is lower, furthermore, the inflatable shaft 213 and the locking chuck 214 are arranged, and the heavy coiled material can be effectively ensured to be stably lifted or lowered in the feeding and discharging process through the opposite clamping action of the inflatable shaft and the locking chuck, so that the labor intensity of workers is greatly reduced, the production efficiency is improved, and meanwhile, the situations of safety accidents and the like are also avoided.
In this embodiment, two limit sensors distributed along the vertical direction are respectively disposed on the lifting guide rails 252 on two sides of the frame 1, the lifting slider 251 is located between the two limit sensors, and the limit sensors are microswitches or proximity switches; in order to improve the automation of the screw lifting of the heavy coiled material, two limit sensors are arranged, the limit sensors detect in-place signals and control the lifting motor 224 to stop rotating in time, and the safety accidents of 'top punching' or 'bottom scraping' of the lifting device 22 and the like are effectively avoided.
In this embodiment, the bottom of the two sides of the frame 1 is further provided with an elongated foot plate 24, and the elongated foot plate 24 extends along one side of the position where the coiled material is located; it should be noted that the heavy coiled material is similar to a cantilever beam structure in the lifting process, and the moment borne by the support 212 and the frame 1 is large; further, set up extension sole 24 and extend along the coiled material direction, effectively avoid automatic unloading mechanism to appear the emergence of dangerous situation such as unilateral toppling over.
Through the above scheme of the utility model, in the concrete application,
and (3) loading operation: firstly, adjusting the distance between two supports 212 according to the width size of the coiled material, and oppositely clamping the heavy coiled material through the air expansion shaft 213 and the locking chuck 214; secondly, starting a lifting motor 224, synchronously driving a left screw rod 221a and a right screw rod 221b to rotate through a left speed reducer 223a, a right speed reducer 223b and a synchronizing shaft 225 between the left speed reducer and the right speed reducer, and driving the material loading assembly 21 to lift under the transmission connection action of a left screw rod 221a and a right screw rod 221b by a left nut 222a and a right nut 222 b; finally, after the limit sensor above the lifting guide rail 252 detects the in-place signal, the electric control assembly controls the lifting motor 224 to stop rotating, and the heavy coil feeding operation is completed;
blanking operation: the lifting motor 224 is started, the left screw rod 221a and the right screw rod 221b are synchronously driven to rotate through the left speed reducer 223a and the right speed reducer 223b and the synchronizing shaft 225 between the left speed reducer and the right speed reducer, and the left nut 222a and the right nut 222b drive the material loading assembly 21 to descend under the transmission connection effect of the left screw rod 221a and the right screw rod 221 b; secondly, after the limit sensor positioned below the lifting guide rail 252 detects the in-place signal, the electric control assembly controls the lifting motor 224 to stop rotating; finally, the opposite clamping action of the air expansion shaft 213 and the locking chuck 214 is released, the heavy coiled material is unloaded, and the unloading operation of the heavy coiled material is completed;
adopt double-screw rod elevation structure, realize the automatic unloading operation of going up of heavy coiled material, reliable and stable has effectively reduced operation personnel's intensity of labour, and the operation security can be guaranteed.
Variations and modifications to the above-described embodiments may occur to those skilled in the art based upon the disclosure and teachings of the above specification. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and some modifications and changes to the present invention should fall within the protection scope of the claims of the present invention. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (10)
1. A heavy coiled material double-screw type automatic loading and unloading mechanism comprises a frame, a lifting device and a loading component on the frame, and is characterized in that,
the lifting device comprises a left screw rod, a right screw rod and a driving module, the left screw rod and the right screw rod are respectively arranged on two sides of the rack, the driving module drives the left screw rod and the right screw rod to synchronously rotate, left nuts and right nuts are correspondingly arranged on the left screw rod and the right screw rod, and the nuts are respectively in transmission connection with the material loading assembly;
the material loading assembly is used for loading coiled materials, lifting slide blocks are further arranged on two sides of the material loading assembly, a lifting guide rail extending in the vertical direction is correspondingly arranged on the rack, and the lifting slide blocks are connected with the lifting guide rail in a matched mode; the material loading component vertically ascends and descends along the lifting guide rail under the driving of each nut.
2. The automatic heavy coiled material double-screw loading and unloading mechanism according to claim 1, wherein the driving module comprises a lifting motor, a left speed reducer and a right speed reducer, an output shaft of the lifting motor is in driving connection with an input end of the left speed reducer/the right speed reducer, a synchronizing shaft is arranged between the input end of the left speed reducer and the input end of the right speed reducer, and output ends of the left speed reducer and the right speed reducer are in driving connection with the left screw and the right screw correspondingly.
3. The heavy-duty coil double-screw automatic loading and unloading mechanism as claimed in claim 2, wherein the synchronizing shaft is further covered with a roller cover, and the roller cover is of a hollow tubular structure and extends along the axial direction of the synchronizing shaft.
4. The automatic heavy coiled material double-screw feeding and discharging mechanism as claimed in claim 3, wherein the left speed reducer and the right speed reducer are worm and gear speed reducers.
5. The heavy coiled material double-screw automatic loading and unloading mechanism as claimed in claim 1, wherein the loading assembly comprises a seat plate, the seat plate is arranged along a vertical plane, the lifting slide block is arranged on one end surface of the seat plate and matched with the lifting guide rail, and two supports are arranged on the other end surface of the seat plate and can slide in the width direction of the seat plate in a facing or separating manner.
6. The heavy coiled material double-screw automatic loading and unloading mechanism as claimed in claim 5, wherein an inflatable shaft is arranged on one support, a locking chuck adapted to the inflatable shaft is arranged on the other support, and the coiled material is oppositely clamped by the inflatable shaft and the locking chuck; the device also comprises a driving device, wherein the driving device is in driving connection with the locking chuck, and the driving device drives the coiled material to rotate forwards, reversely or stop rotating.
7. The heavy coil double-screw automatic loading and unloading mechanism according to claim 1, wherein the weight of the coil is in the range of 100kg to 1500kg.
8. The automatic double-screw feeding and discharging mechanism for the heavy coils as claimed in claim 1, wherein the two sides of the frame are respectively provided with an upper bracket and a lower bracket which are distributed along the vertical direction, the upper ends of the left screw rod and the right screw rod are rotatably connected with the upper bracket, and the lower ends of the left screw rod and the right screw rod are rotatably connected with the lower bracket.
9. The heavy coiled material double-screw automatic loading and unloading mechanism as claimed in claim 1, wherein two limit sensors are respectively arranged on the lifting guide rails on two sides of the frame and distributed along the vertical direction, the lifting slide block is positioned between the two limit sensors, and the limit sensors are micro switches or proximity switches.
10. The automatic loading and unloading mechanism of claim 1, wherein the bottom of the two sides of the frame is further provided with an elongated foot plate, and the elongated foot plate extends along one side of the position of the coiled material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222027396.1U CN217894602U (en) | 2022-08-02 | 2022-08-02 | Automatic loading and unloading mechanism of heavy coiled material double screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222027396.1U CN217894602U (en) | 2022-08-02 | 2022-08-02 | Automatic loading and unloading mechanism of heavy coiled material double screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217894602U true CN217894602U (en) | 2022-11-25 |
Family
ID=84139410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222027396.1U Active CN217894602U (en) | 2022-08-02 | 2022-08-02 | Automatic loading and unloading mechanism of heavy coiled material double screw |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217894602U (en) |
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2022
- 2022-08-02 CN CN202222027396.1U patent/CN217894602U/en active Active
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Address after: 528244 North 2, Heng Second Road, Shabu Avenue, Lishui Shabu Industrial Zone, Nanhai District, Foshan City, Guangdong Province Patentee after: Guangdong Yaodonghua Group Co.,Ltd. Country or region after: China Patentee after: ZHAOQING YAODONGHUA DECORATION MATERIALS TECHNOLOGY Co.,Ltd. Address before: 528244 North 2, Heng Second Road, Shabu Avenue, Lishui Shabu Industrial Zone, Nanhai District, Foshan City, Guangdong Province Patentee before: GUANGDONG YAODONGHUA DECORATION MATERIALS TECHNOLOGY CO.,LTD. Country or region before: China Patentee before: ZHAOQING YAODONGHUA DECORATION MATERIALS TECHNOLOGY Co.,Ltd. |