CN110202336B - Gear self-adaptation conical surface rapid fixture manipulator - Google Patents
Gear self-adaptation conical surface rapid fixture manipulator Download PDFInfo
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- CN110202336B CN110202336B CN201910534432.3A CN201910534432A CN110202336B CN 110202336 B CN110202336 B CN 110202336B CN 201910534432 A CN201910534432 A CN 201910534432A CN 110202336 B CN110202336 B CN 110202336B
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- gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/06—Gripping heads and other end effectors with vacuum or magnetic holding means
- B25J15/0608—Gripping heads and other end effectors with vacuum or magnetic holding means with magnetic holding means
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Abstract
The invention discloses a gear self-adaptive conical surface rapid fixture manipulator which comprises a gear adsorption mechanism and a gear clamping mechanism, wherein the gear adsorption mechanism is arranged on the gear adsorption mechanism; the gear adsorption mechanism comprises a fixed plate, a pull-down pneumatic assembly, a pull-down telescopic assembly and an electromagnetic chuck; the gear clamping mechanism comprises a pressure opening and closing ring disc and a centering ring disc, the top surface of the centering ring disc is recessed downwards to form a conical surface, a plurality of rows of clamping assemblies are arranged on the conical surface of the centering ring disc at intervals, a groove is formed in the pressure opening and closing ring disc corresponding to the opening and closing slide block, and an upper electrode and a lower electrode are arranged in the groove; according to the invention, the plurality of rows of clamping assemblies are arranged on the conical surface of the centering ring disc at intervals, so that the gear clamping device can be adaptive to gears with different tooth shapes and different modules, the universality is stronger, and the gear clamping device is matched with the pull-down pneumatic assembly, the pull-down telescopic assembly and the electromagnetic chuck, so that the gear is quickly clamped and positioned, the gear is conveniently and quickly assembled, the assembly efficiency is improved, and the labor intensity is reduced.
Description
Technical Field
The invention relates to the technical field of gear assembly fixtures, in particular to a gear self-adaptive conical surface rapid fixture manipulator.
Background
The gear is used as a symbol of the mechanical industry, the position of the gear in the field of mechanical transmission is not replaceable, and the mechanical industry also puts forward new requirements on the precision and the demand of the gear along with the acceleration of the industrialization process; the gears are various in types and specifications, but the conventional gear assembling clamp can only clamp one or a limited number of specifications of gears generally, and is poor in universality and low in assembling efficiency.
Therefore, the gear assembling clamp manipulator with high universality and high assembling efficiency is urgently needed to be provided.
Disclosure of Invention
The invention aims to overcome the defects and provide a gear self-adaptive conical surface rapid clamp manipulator.
In order to achieve the purpose, the invention adopts the following specific scheme:
a gear self-adaptive conical surface rapid clamp manipulator comprises a gear adsorption mechanism and a gear clamping mechanism; the gear adsorption mechanism comprises a fixed plate, a pull-down pneumatic assembly, a pull-down telescopic assembly and an electromagnetic chuck, the pull-down pneumatic assembly is arranged on the bottom surface of the fixed plate, one end of the pull-down telescopic assembly movably penetrates through the fixed plate and then is connected with the output end of the pull-down pneumatic assembly, and the electromagnetic chuck is arranged at the other end of the pull-down telescopic assembly; the gear clamping mechanism comprises a pressure opening and closing ring disc and a centering ring disc, the pressure opening and closing ring disc is fixed on the top surface of the fixed plate, the centering ring disc is arranged on the pressure opening and closing ring disc, the top surface of the centering ring disc is downwards sunken to form a conical surface, a plurality of rows of clamping assemblies are arranged at intervals on the conical surface of the centering ring disc, each row of clamping assemblies is along the generatrix direction of the conical surface of the centering ring disc, a plurality of opening and closing slide blocks are movably embedded in the centering ring disc, the top surfaces of the opening and closing slide blocks are parallel to the conical surface of the centering ring disc, the bottom of the opening and closing slide block is connected with a first return spring, the other end of the first return spring is connected with a pressure opening and closing ring disc, a groove is arranged on the pressure opening and closing ring disc corresponding to the opening and closing slide block, an upper electrode and a lower electrode are arranged in the groove, and the upper electrode is electrically conducted with the lower electrode when the opening and closing slider is pressed downwards; the other end of the pull-down telescopic assembly extends along the axial direction of the pressure opening and closing ring disc and the centering ring disc, so that the electromagnetic chuck is positioned above the conical surface of the centering ring disc.
The utility model discloses a pneumatic assembly, including pull-down telescopic assembly, electromagnetic chuck, connecting screw, telescopic shaft, telescopic spring and connecting screw, the one end of telescopic shaft and connecting screw's one end fixed connection, electromagnetic chuck fixes the other end at the telescopic shaft, connecting screw's the other end and pull-down pneumatic assembly's output fixed connection, the telescopic spring cover is located on the telescopic shaft, telescopic spring's both ends lean on with telescopic shaft and fixed plate top respectively.
The other end of the telescopic shaft is provided with a disc end part, and the electromagnetic chuck is arranged on the disc end part.
The pull-down pneumatic assembly comprises a cylinder support and a pull-down cylinder, the cylinder support is fixed on the bottom surface of the fixing plate, the pull-down cylinder is fixed on the cylinder support, and the output end of the pull-down cylinder is connected with the pull-down telescopic assembly.
The clamping assembly comprises a spring column outer barrel, a second reset spring and a floating clamp, the spring column outer barrel is embedded on the centering ring disc, the second reset spring is arranged in the spring column outer barrel, one end of the second reset spring is fixedly connected with the spring column outer barrel, and one end of the floating clamp stretches into the spring column outer barrel and is fixedly connected with the other end of the second reset spring.
Wherein, the other end of the floating staple is in a spherical shape.
The centering ring disc is provided with 4 opening and closing sliding blocks, the opening and closing sliding blocks are distributed in a cross shape and are located between two adjacent rows of clamping assemblies.
The invention has the beneficial effects that: compared with the prior art, the gear clamping device has the advantages that the plurality of rows of clamping assemblies are arranged on the conical surface of the centering ring disc at intervals, gears with different tooth shapes and different modulus can be self-adapted, the universality is higher, and the gear clamping device is matched with the pull-down pneumatic assembly, the pull-down telescopic assembly and the electromagnetic chuck, so that the gears can be quickly clamped and positioned, the gears can be quickly assembled, the assembly efficiency is improved, and the labor intensity is reduced; meanwhile, the upper electrode and the lower electrode are connected and disconnected by the up-and-down sliding of the opening and closing sliding block, so that the feedback control of the electromagnetic chuck is realized, manual intervention is not needed, and the operation is convenient.
Drawings
FIG. 1 is a schematic structural diagram of a gear adaptive conical surface rapid clamp provided by an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a gear adsorption mechanism provided in an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a gear clamping mechanism provided in an embodiment of the present invention;
FIG. 4 is a top view of a gear clamping mechanism provided by an embodiment of the present invention;
3 FIG. 3 5 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 A 3- 3 A 3 of 3 FIG. 3 4 3; 3
FIG. 6 is an enlarged partial schematic view at I of FIG. 5;
FIG. 7 is a schematic structural view of a clamping assembly provided in accordance with an embodiment of the present invention;
FIG. 8 is a diagram illustrating an exemplary use of the adaptive cone face fixture according to the present invention;
description of reference numerals: 1-a gear adsorption mechanism; 11-a fixed plate; 12-a pull down pneumatic assembly; 121-cylinder holder; 122-a pull-down cylinder; 13-a pulldown retraction assembly; 131-a telescopic shaft; 1311-disc end; 132-a telescoping spring; 133-connecting screw; 14-an electromagnetic chuck; 2-a gear clamping mechanism; 21-pressure switching ring disc; 22-centering ring disk; 221-a conical surface; 23-a clamping assembly; 231-spring post outer barrel; 232-a second return spring; 233-floating staple; 24-opening and closing slider; 25-a first return spring; 26-an upper electrode; 27-lower electrode.
Detailed Description
The invention will be described in further detail with reference to the following figures and specific examples, without limiting the scope of the invention.
As shown in fig. 1 to 8, the gear adaptive conical surface rapid clamping manipulator according to the embodiment includes a gear adsorption mechanism 1 and a gear clamping mechanism 2; the gear adsorption mechanism 1 comprises a fixed plate 11, a pull-down pneumatic assembly 12, a pull-down telescopic assembly 13 and an electromagnetic chuck 14, wherein the pull-down pneumatic assembly 12 is arranged on the bottom surface of the fixed plate 11, one end of the pull-down telescopic assembly 13 movably penetrates through the fixed plate 11 and then is connected with the output end of the pull-down pneumatic assembly 12, and the electromagnetic chuck 14 is arranged at the other end of the pull-down telescopic assembly 13; the gear clamping mechanism 2 comprises a pressure opening and closing ring disc 21 and a centering ring disc 22, the pressure opening and closing ring disc 21 is fixed on the top surface of the fixing plate 11, the centering ring disc 22 is arranged on the pressure opening and closing ring disc 21, a conical surface 221 is formed by downward sinking of the top surface of the centering ring disc 22, a plurality of rows of clamping components 23 are arranged at intervals on the conical surface 221 of the centering ring disc 22, each row of clamping components 23 are along the generatrix direction of the conical surface 221 of the centering ring disc 22, a plurality of opening and closing sliders 24 are movably embedded in the centering ring disc 22, the top surface of each opening and closing slider 24 is parallel to the conical surface 221 of the centering ring disc 22, the bottom of each opening and closing slider 24 is connected with a first return spring 25, the other end of the first return spring 25 is connected with the pressure opening and closing ring disc 21, a groove is formed in the pressure opening and closing ring disc 21 corresponding to the opening and closing slider 24, an upper electrode 26 and a lower, the upper electrode 26 is electrically connected to the lower electrode 27 when the opening/closing slider 24 is pressed down; the other end of the pull-down expansion assembly 13 extends along the axial direction of the pressure opening and closing ring plate 21 and the centering ring plate 22, so that the electromagnetic chuck 14 is positioned above the conical surface 221 of the centering ring plate 22.
Specifically, the pull-down pneumatic assembly 12 is controlled to operate by an external through-type solenoid valve, and the upper electrode 26, the lower electrode 27, the electromagnetic chuck 14 and the external through-type solenoid valve are electrically connected in series; the working mode of the embodiment is as follows: when the electromagnetic chuck 14 is powered on, the electromagnetic chuck 14 adsorbs the gear after the electromagnetic chuck 14 is powered on, meanwhile, the external through electromagnetic valve is powered on, the pull-down pneumatic assembly 12 works, the pull-down telescopic assembly 13 is pulled downwards, so that the gear is pulled downwards, the outer circumferential surface of the gear is tightly attached to the conical surface 221 of the centering ring disc 22, the gear is clamped and positioned, and the gear can be quickly assembled; when the gear needs to be loosened at a later stage, the external medium-through electromagnetic valve is disconnected, the pull-down pneumatic assembly 12 stops working, the pull-down telescopic assembly 13 drives the gear to ascend, the opening and closing slide block 24 resets under the action of the first return spring 25, the upper electrode 26 is disconnected from the lower electrode 27, and then the electromagnetic chuck 14 does not adsorb the gear any more, so that the gear is loosened, and the assembly of the gear is completed.
In the embodiment, the plurality of rows of clamping assemblies 23 are arranged on the conical surface 221 of the centering ring plate 22 at intervals, so that the gear clamping device can be adaptive to gears with different tooth shapes and different modules, has stronger universality, and is matched with the pull-down pneumatic assembly 12, the pull-down telescopic assembly 13 and the electromagnetic chuck 14 to realize the quick clamping and positioning of the gear, thereby facilitating the quick assembly of the gear, improving the assembly efficiency and reducing the labor intensity; meanwhile, the upper electrode 26 and the lower electrode 27 are switched on and off by arranging the opening and closing slide block 24 to slide up and down, so that the feedback control of the electromagnetic chuck 14 is realized, manual intervention is not needed, and the operation is convenient.
In this embodiment, 20 rows of the clamping assemblies 23 are arranged on the conical surface 221 of the centering ring plate 22, and 8 clamping assemblies 23 are arranged in each row, so that the centering ring plate 22 is more favorable for adapting to gears with different tooth shapes and different moduli, and the universality is higher. In this embodiment, be equipped with 4 switching sliders 24 on centering ring dish 22, 4 switching slider 24 is the cross distribution, switching slider 24 is located between two adjacent rows of chucking subassemblies 23, does benefit to gear center location, and the axis of gear and the axis coincidence of centering ring dish 22, the location of gear is more accurate.
Based on the above embodiment, as shown in fig. 2, the downward-pulling telescopic assembly 13 includes a telescopic shaft 131, a telescopic spring 132 and a connecting screw 133, one end of the telescopic shaft 131 is fixedly connected with one end of the connecting screw 133, the electromagnetic chuck 14 is fixed at the other end of the telescopic shaft 131, the other end of the connecting screw 133 is fixedly connected with the output end of the downward-pulling pneumatic assembly 12, the telescopic spring 132 is sleeved on the telescopic shaft 131, and two ends of the telescopic spring 132 respectively abut against the telescopic shaft 131 and the fixing plate 11; specifically, the pull-down pneumatic assembly 12 pulls down the telescopic shaft 131 through the connecting screw 133, the telescopic shaft 131 drives the gear to sink, and the telescopic spring 132 generates elastic deformation, so that the outer circumferential surface of the gear is tightly attached to the conical surface 221 of the centering ring disc 22, thereby realizing clamping and positioning of the gear, when the gear needs to be loosened, the pull-down pneumatic assembly 12 does not work, at this time, the telescopic spring 132 does not receive extrusion force, the elastic deformation is recovered, the telescopic shaft 131 is driven to reset, the telescopic shaft 131 drives the gear to ascend, so that the gear does not press the opening and closing slider 24 any more, the opening and closing slider 24 resets under the action of the first reset spring 25, further, the upper electrode 26 is disconnected with the lower electrode 27, at this time, the electromagnetic chuck 14 is powered off, the gear is not adsorbed, thereby realizing loosening of.
Based on the above embodiment, further, the other end of the telescopic shaft 131 is provided with a disc end 1311, and the electromagnetic chuck 14 is arranged on the disc end 1311, so that the structure is more reasonable.
Based on the above embodiment, further, as shown in fig. 2, the pull-down pneumatic assembly 12 includes a cylinder bracket 121 and a pull-down cylinder 122, the cylinder bracket 121 is fixed on the bottom surface of the fixing plate 11, the pull-down cylinder 122 is fixed on the cylinder bracket 121, and an output end of the pull-down cylinder 122 is connected to the pull-down telescopic assembly 13; specifically, when the upper electrode 26 and the lower electrode 27 are connected, the external medium-through electromagnetic valve works to allow the pull-down cylinder 122 to intake air, the pull-down cylinder 122 works to pull the telescopic shaft 131 downwards through the connecting screw 133 to allow the gear to move downwards, so that the gear is clamped and positioned, and the structure is simple and the cost is low.
Based on the above embodiment, as shown in fig. 7, the clamping assembly 23 includes a spring post outer cylinder 231, a second return spring 232 and a floating clamp 233, the spring post outer cylinder 231 is embedded on the centering ring disc 22, the second return spring 232 is disposed in the spring post outer cylinder 231, and one end of the second return spring 232 is fixedly connected with the spring post outer cylinder 231, and one end of the floating clamp 233 extends into the spring post outer cylinder 231 and is fixedly connected with the other end of the second return spring 232; specifically, when the gear moves down, the tooth tops of the gears are in contact with the floating clamp 233, the floating clamp 233 is pressed down, the floating clamp 233 extends into the spring column outer cylinder 231, at the moment, the floating clamp 233 compresses the second return spring 232, the second return spring 232 generates elastic deformation, and the part of the floating clamp 233 in contact with the tooth bottoms of the gears is embedded between the two teeth, so that the rotation of the gear can be prevented, when the gear moves up, the tooth tops of the gears do not press down the floating clamp 233 any more, and the floating clamp 233 resets under the elastic action of the second return spring 232.
Based on the above embodiment, furthermore, the other end of the floating clamp 233 is spherical, which is more beneficial for the floating clamp 233 to be embedded between two teeth and is also beneficial for protecting the teeth of the gear.
The above description is only a preferred embodiment of the present invention, and all equivalent changes or modifications of the structure, characteristics and principles described in the present patent application are included in the protection scope of the present patent application.
Claims (6)
1. A gear self-adaptive conical surface rapid clamp manipulator is characterized by comprising a gear adsorption mechanism (1) and a gear clamping mechanism (2); the gear adsorption mechanism (1) comprises a fixed plate (11), a pull-down pneumatic assembly (12), a pull-down telescopic assembly (13) and an electromagnetic chuck (14), wherein the pull-down pneumatic assembly (12) is arranged on the bottom surface of the fixed plate (11), one end of the pull-down telescopic assembly (13) movably penetrates through the fixed plate (11) and then is connected with the output end of the pull-down pneumatic assembly (12), and the electromagnetic chuck (14) is arranged at the other end of the pull-down telescopic assembly (13); the gear clamping mechanism (2) comprises a pressure opening and closing ring disc (21) and a centering ring disc (22), the pressure opening and closing ring disc (21) is fixed on the top surface of the fixing plate (11), the centering ring disc (22) is arranged on the pressure opening and closing ring disc (21), the top surface of the centering ring disc (22) is recessed downwards to form a conical surface (221), multiple rows of clamping assemblies (23) are arranged on the conical surface (221) of the centering ring disc (22) at intervals, each row of clamping assemblies (23) are along the bus direction of the conical surface (221) of the centering ring disc (22), a plurality of opening and closing sliding blocks (24) are movably embedded in the centering ring disc (22), the top surfaces of the opening and closing sliding blocks (24) are parallel to the conical surface (221) of the centering ring disc (22), the bottoms of the opening and closing sliding blocks (24) are connected with a first reset spring (25), and the other end of the first reset spring (25) is connected with the pressure opening and closing ring disc (21), a groove is formed in the pressure opening and closing ring disc (21) corresponding to the opening and closing sliding block (24), an upper electrode (26) and a lower electrode (27) are arranged in the groove, and the upper electrode (26) is electrically conducted with the lower electrode (27) when the opening and closing sliding block (24) is pressed downwards; the other end of the pull-down telescopic assembly (13) extends along the axial direction of the pressure opening and closing ring disc (21) and the centering ring disc (22), so that the electromagnetic chuck (14) is positioned above the conical surface (221) of the centering ring disc (22);
chucking subassembly (23) are including spring post urceolus (231), second reset spring (232) and unsteady bail (233), spring post urceolus (231) are inlayed and are established on centering ring dish (22), second reset spring (232) are located in spring post urceolus (231), and its one end and spring post urceolus (231) fixed connection, the one end of unsteady bail (233) stretch into in spring post urceolus (231) and with the other end fixed connection of second reset spring (232).
2. The gear self-adaptive conical surface rapid clamp manipulator according to claim 1, wherein the pull-down telescopic assembly (13) comprises a telescopic shaft (131), a telescopic spring (132) and a connecting screw rod (133), one end of the telescopic shaft (131) is fixedly connected with one end of the connecting screw rod (133), the electromagnetic chuck (14) is fixed at the other end of the telescopic shaft (131), the other end of the connecting screw rod (133) is fixedly connected with an output end of the pull-down pneumatic assembly (12), the telescopic spring (132) is sleeved on the telescopic shaft (131), and two ends of the telescopic spring (132) are respectively abutted against the telescopic shaft (131) and the fixing plate (11).
3. The gear adaptive cone rapid clamp manipulator according to claim 2, wherein the other end of the telescopic shaft (131) is provided with a disc end part (1311), and the electromagnetic chuck (14) is arranged on the disc end part (1311).
4. The gear self-adaptive conical surface rapid clamp manipulator according to claim 1, wherein the pull-down pneumatic assembly (12) comprises a cylinder support (121) and a pull-down cylinder (122), the cylinder support (121) is fixed on the bottom surface of the fixing plate (11), the pull-down cylinder (122) is fixed on the cylinder support (121), and the output end of the pull-down cylinder (122) is connected with the pull-down telescopic assembly (13).
5. The gear adaptive cone rapid jig robot as claimed in claim 1, wherein the other end of the floating clamp (233) has a spherical shape.
6. The gear self-adaptive conical surface rapid clamp manipulator according to claim 1, wherein 4 opening and closing sliders (24) are arranged on the centering ring disc (22), the 4 opening and closing sliders (24) are distributed in a cross shape, and the opening and closing sliders (24) are positioned between two adjacent rows of clamping components (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910534432.3A CN110202336B (en) | 2019-06-20 | 2019-06-20 | Gear self-adaptation conical surface rapid fixture manipulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910534432.3A CN110202336B (en) | 2019-06-20 | 2019-06-20 | Gear self-adaptation conical surface rapid fixture manipulator |
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| Publication Number | Publication Date |
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| CN110202336A CN110202336A (en) | 2019-09-06 |
| CN110202336B true CN110202336B (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910534432.3A Active CN110202336B (en) | 2019-06-20 | 2019-06-20 | Gear self-adaptation conical surface rapid fixture manipulator |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117344118B (en) * | 2023-10-07 | 2024-05-14 | 山东润通齿轮集团有限公司 | Clamping and shaping device for quenching gear ring and application method thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19543734C1 (en) * | 1995-11-24 | 1997-05-07 | Benteler Werke Ag | Tool holder for automatic tool change |
| DE102010040642B4 (en) * | 2010-09-13 | 2014-01-30 | Schunk Gmbh & Co. Kg Spann- Und Greiftechnik | magnetic gripper |
| CN203541758U (en) * | 2013-10-12 | 2014-04-16 | 江苏睿思特传动机械有限公司 | Hydraulic type pressing clamp |
| CN203649992U (en) * | 2013-11-22 | 2014-06-18 | 重庆市永和直锥齿有限公司 | Pneumatic type gear end milling location clamp |
| CN205325207U (en) * | 2015-12-20 | 2016-06-22 | 吉林工程技术师范学院 | Handstand metal bottle clamping device |
| CN107671570A (en) * | 2017-10-30 | 2018-02-09 | 周言鑫 | A kind of pcb board production Digit Control Machine Tool with holding function |
| CN107717400A (en) * | 2017-11-27 | 2018-02-23 | 苏州三屹晨光自动化科技有限公司 | A kind of rotor magnet transportation manipulator |
| CN208613932U (en) * | 2018-07-18 | 2019-03-19 | 盐城瑞升齿轮有限公司 | A kind of gear stationary fixture |
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2019
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| CN110202336A (en) | 2019-09-06 |
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Address after: Room 101, Building 7, No. 232, Hongtu Road, Nancheng Street, Dongguan City, Guangdong Province, 523073 Patentee after: DONGGUAN SMARTWIN INTELLIGENT EQUIPMENT Co.,Ltd. Address before: Room 106, First Floor, F Building, Phase I, Goldman Sachs Science Park, No. 5 Zhouxi Longxi Road, Nancheng Street, Dongguan City, Guangdong Province Patentee before: DONGGUAN SMARTWIN INTELLIGENT EQUIPMENT Co.,Ltd. |