CN114535993A - Automatic automobile door lock production line - Google Patents
Automatic automobile door lock production line Download PDFInfo
- Publication number
- CN114535993A CN114535993A CN202210238268.3A CN202210238268A CN114535993A CN 114535993 A CN114535993 A CN 114535993A CN 202210238268 A CN202210238268 A CN 202210238268A CN 114535993 A CN114535993 A CN 114535993A
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- Prior art keywords
- feeding
- ring
- door lock
- conveyor
- production line
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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
- B23P19/04—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 for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
-
- 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
- B23P19/001—Article feeders for assembling machines
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automatic Assembly (AREA)
Abstract
The invention discloses an automatic automobile door lock production line, which comprises a conveyor, an automatic screw locking machine and a feeding machine, wherein the conveyor is a double-row conveyor, a conveying plate is in transmission connection with the conveyor, a placing groove is formed in the top surface of the conveying plate, a feeding hole is formed in the middle of the placing groove, and a circle of electromagnets are arranged in the placing groove along the circumferential direction of the feeding hole; when the conveying plate is conveyed to the adsorption ring by the conveyor, parts in the adsorption ring are automatically adsorbed and pushed into the shell placed in the conveying plate above through the electromagnet, and then the conveying plate and the shell are locked and fixed through the automatic screw locking machine, so that assembly is completed; compared with the traditional mechanism, the mechanism has the advantages of simpler structure, no need of an additional air source, convenience in installation and operation and contribution to reduction of production and manufacturing cost.
Description
Technical Field
The invention relates to the field of automobile accessories, in particular to an automatic automobile door lock production line.
Background
The conventional automobile door lock has the working principle that electric energy is converted into mechanical energy, and a motor drives a gear to rotate to open and close an automobile door. The basic components mainly comprise a door lock switch, a door lock actuating mechanism and a door lock controller.
In the production and assembly process of the automobile door lock, parts are usually embedded into a shell from the lower part and then are subjected to screw locking and glue pouring operation, wherein a feeding mechanism at the lower part usually adopts an air cylinder to jack the parts and then send the parts into the shell, and then screws are screwed and glue is poured from the upper part of the shell; however, when the equipment is manufactured, the feeding mechanism adopts the air cylinder, the conveyor needs to be additionally grooved, hole sites are arranged at reserved positions, the equipment is relatively complex to install and process, later maintenance and maintenance are relatively inconvenient, and the manufacturing cost is relatively high.
Therefore, how to solve the defects of the prior art is a subject of the present invention.
Disclosure of Invention
In order to solve the problems, the invention discloses an automatic automobile door lock production line.
In order to achieve the above purpose, the invention provides the following technical scheme: an automatic automobile door lock production line comprises a conveyor, an automatic screw locking machine and a feeding machine, wherein the conveyor is a double-row conveyor, a conveying plate is connected to the conveyor in a transmission mode, a placing groove is formed in the top surface of the conveying plate, a feeding hole is formed in the middle of the placing groove, and a circle of electromagnets are arranged in the placing groove along the circumferential direction of the feeding hole;
the feeding machine is provided with a feeding station, the conveyor penetrates through the feeding station, an adsorption ring which is in adsorption fit with the electromagnet is arranged below the conveying plate in the feeding station, the lower end of the adsorption ring is connected to an installation seat in a sliding mode along the vertical direction, one side of the adsorption ring is provided with a feeding opening, the edges of the two ends of the feeding opening are respectively connected with an arc-shaped flexible baffle, and a feeding groove is formed in the installation seat corresponding to the feeding opening;
the automatic screw locking machine is provided with an electric screwdriver, and the electric screwdriver is positioned in the feeding station and correspondingly arranged above the adsorption ring.
In the above scheme, electronic screwdriver includes the screwdriver head, the outside of screwdriver head is equipped with along its length direction slip cover and is supported the cover, and connects through spline synchronous drive between the two, it has the pressure spring to support to press to sheathe in action, support to press including the lower extreme of cover with the cladding of screwdriver head, the bottom surface that supports to press the cover is equipped with a plurality of anti-skidding archs along its circumference is protruding.
In the above scheme, material loading station department still installs one drop and glues the head, and the outside that should drip to glue the head has the round subassembly of blowing along its circumference shaping, the subassembly of blowing includes outer lantern ring, and this outer lantern ring is hollow structure, and the inner chamber bottom of outer lantern ring corresponds the circumference that drips to glue the head and has seted up the round hole of blowing, the exit end of blowing hole sets up downwards to one side, and the outside of outer lantern ring is connected with the compressed gas pipeline.
In the above scheme, the air blowing assembly further comprises an inner sleeve ring, the lower end of the inner sleeve ring is rotatably inserted into the outer sleeve ring, the upper end of the outer sleeve ring is in rotary sealing fit with the inner sleeve ring, a semi-ring is formed at the bottom end of the inner sleeve ring corresponding to the air blowing hole, and the semi-ring partially covers the air blowing hole.
In the scheme, the bottom end of the adsorption ring is connected with a guide rod, and the guide rod is connected with the mounting seat in a sliding damping mode along the vertical direction.
In the above scheme, the outside of feed chute is provided with a vibration material loading machine, and the top export of this vibration material loading machine has a conveying pipeline, installs pushing equipment in this conveying pipeline, pushing equipment includes a elevating system and the sharp actuating mechanism who is connected with the elevating system transmission, elevating system's lower extreme transmission is connected with the elasticity fixture block of a pair of vertical setting, is formed with the space of placing that is used for the card to go into the work piece between this a pair of elasticity fixture block, elevating system is driven by sharp actuating mechanism and is made the displacement along the direction of conveying pipeline to feed chute.
In the above scheme, the bottom end of the elastic fixture block is provided with a thinning part.
The invention has the beneficial effects that: the automobile door lock production line comprises a conveyor, an automatic screw locking machine and a feeding machine, wherein an adsorption ring which is in adsorption fit with an electromagnet is arranged in a feeding station of the feeding machine, when a conveying plate is conveyed to the adsorption ring by the conveyor, parts in the adsorption ring are automatically adsorbed and pushed into a shell placed in the conveying plate above the adsorption ring through the electromagnet, and then the conveying plate and the shell are locked and fixed through the automatic screw locking machine, so that the assembly is completed; compared with the traditional mechanism, the mechanism has the advantages of simpler structure, no need of an additional air source, convenience in installation and operation and contribution to reduction of production and manufacturing cost.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the position of the feeder;
FIG. 3 is an enlarged view of a portion B of FIG. 2;
FIG. 4 is a schematic view of the adsorption ring 301;
FIG. 5 is a schematic structural view of the pushing mechanism;
FIG. 6 is a schematic structural diagram of an electric screwdriver 201 according to an embodiment;
FIG. 7 is an enlarged view of a portion of FIG. 6 at B;
FIG. 8 is a schematic structural view of a glue dripping head and a blowing assembly;
FIG. 9 is a cross-sectional view of the insufflation assembly;
fig. 10 is a perspective view of the inner collar.
Detailed Description
The present invention will be further illustrated with reference to the accompanying drawings and specific embodiments, which are to be understood as merely illustrative of the invention and not as limiting the scope of the invention.
Example (b): referring to fig. 1-10, an automatic automobile door lock production line includes a conveyor 100, an automatic screw locking machine 200, and a feeding machine 300, wherein the conveyor 100 is a double-row conveyor, a conveying plate 101 is connected to the conveyor 100 in a transmission manner, two ends of the conveying plate 101 are arranged on two conveying belts of the conveyor 100, and the conveying belt 100 is driven to move along the conveying direction;
the top surface of the conveying plate 101 is provided with a placing groove 111, the placing groove 111 is used for placing a lock body shell, a buckle used for being buckled with the lock body shell is arranged in the placing groove 111 and used for clamping the lock body shell in the placing groove 111, the middle part of the placing groove 111 is provided with a feeding hole 112, and a circle of electromagnets 113 are arranged in the placing groove 111 along the circumferential direction of the feeding hole 112; the whole conveying plate 101 is made of engineering plastics so as to avoid influencing the use of the electromagnet 113;
the feeding machine 300 is provided with a feeding station, the conveyor 100 passes through the feeding station, an adsorption ring 301 which is used for being in adsorption fit with the electromagnet 113 is arranged in the feeding station and corresponds to the lower part of the conveying plate 101, the lower end of the adsorption ring 301 is connected to an installation seat 302 in a sliding mode along the vertical direction, one side of the adsorption ring 301 is provided with a feeding opening 311, the edges of two ends of the feeding opening 311 are respectively connected with an arc-shaped flexible baffle piece 312, and a feeding groove 313 is formed in the installation seat 302 and corresponds to the feeding opening 311; the bottom surface of the adsorption ring 301 is sealed, the upper end of the adsorption ring is open and is used for accommodating a workpiece to be assembled (such as a lock body outer ring and the like), the arc-shaped flexible blocking piece 312 is made of materials such as silica gel or PVC (polyvinyl chloride), the adsorption ring 301 is made of iron materials capable of being adsorbed by magnetic force, when the workpiece is loaded, the workpiece is pushed to the feeding opening 311 from the feeding groove 313, the arc-shaped flexible blocking pieces 312 at two sides are pushed to enter the inner cavity of the adsorption ring 301, and then the arc-shaped flexible blocking pieces 312 return again; specifically, a vibration feeding machine 500 is arranged outside the feeding chute 313, a feeding pipeline 501 is arranged at the top end outlet of the vibration feeding machine 500, a material pushing mechanism is installed in the feeding pipeline 501, the material pushing mechanism comprises a lifting mechanism 502 (using an air cylinder or an electric linear module) and a linear driving mechanism 503 in transmission connection with the lifting mechanism 502, a pair of vertically arranged elastic clamping blocks 504 is in transmission connection with the lower end of the lifting mechanism 502, a placing space for clamping a workpiece is formed between the pair of elastic clamping blocks 504, the lifting mechanism 502 is driven by the linear driving mechanism 503 (using the air cylinder or the electric linear module) to displace along the direction from the feeding pipeline 501 to the feeding chute 313, the workpiece is conveyed into the feeding pipeline 501 through the vibration feeding machine 500, the elastic clamping blocks 504 are clamped between the two elastic clamping blocks 504 through the lifting mechanism 502, the elastic clamping blocks 504 can be made of rubber as a whole, the workpiece is pushed into the adsorption ring 301 through the feed chute 313 by the wire drive mechanism 503;
the automatic screw locking machine 200 is provided with an electric screwdriver 201, the electric screwdriver 201 is positioned in a feeding station and is correspondingly arranged above an adsorption ring 301, the automatic screw locking machine 200 adopts the existing structure and comprises X, Y, Z linear driving mechanisms in three directions (the three use electric lead screw linear modules) and an adsorption type screw feeding machine, and the X, Y, Z shaft linear driving mechanism is used for driving the electric screwdriver 201 to displace in the vertical, left, right, front and back directions;
during operation, a workpiece to be assembled is pushed to the feeding opening 311 through the feeding groove 313, the arc-shaped flexible blocking pieces 312 on the two sides are pushed to enter the inner cavity of the adsorption ring 301, and then the arc-shaped flexible blocking pieces 312 return again; when the conveyor 100 drives the conveying plate 101 to move to the position above the adsorption ring 301 in the feeding station, the electromagnet 113 is started, the electromagnet 113 generates magnetic force to suck up the adsorption ring 301 located below the electromagnet 113, a workpiece in the adsorption ring 301 is pressed in a lock body shell placed on the feeding hole 112 through the feeding hole 112, then the automatic screw locking machine 200 lowers the electric screwdriver 201 to lock and fix the workpiece on the lock body shell, after locking, the electromagnet 113 is closed, the adsorption ring 301 returns, and the conveyor 100 drives the conveying plate 101 to move to the next operation station.
In order to improve the difficulty of inclination of the screw when the electric screwdriver 201 screws, the electric screwdriver 201 comprises a screwdriver head 211, a pressing sleeve 212 is sleeved outside the screwdriver head 211 in a sliding manner along the length direction of the screwdriver head 211 and is in synchronous transmission connection with the screwdriver head 211 through a spline, a pressure spring acts on the pressing sleeve 212, the screwdriver head 211 is covered by the lower end of the pressing sleeve 212, a plurality of anti-skidding protrusions are convexly arranged on the bottom surface of the pressing sleeve 212 along the circumferential direction of the pressing sleeve 212, the screwdriver head 211 and the pressing sleeve 212 are in synchronous transmission connection with the spline, so that the pressing sleeve 212 can slide along the length direction of the screwdriver head 211 and can synchronously rotate along with the screwdriver head 211, when the screw is screwed, the pressing sleeve 212 can be pressed against the peripheral part of the screw under the action of the pressure spring to improve the stability of the screw and can be synchronously screwed into the screw along with the screwdriver head 211, the anti-skidding protrusions can be in a strip shape and are used for increasing the friction force between the anti-skidding protrusions and the screw, the generation of slip is reduced.
The feeding station is also provided with a glue dripping head 400, the outer side of the glue dripping head 400 is provided with a circle of air blowing components 401 along the circumferential direction, each air blowing component 401 comprises an outer collar 411, the outer collar 411 is of a hollow structure, the bottom end of an inner cavity of the outer collar 411 is provided with a circle of air blowing holes 402 corresponding to the circumferential direction of the glue dripping head 400, the outlet ends of the air blowing holes 402 are obliquely arranged downwards, the outer side of the outer collar 411 is connected with a compressed air pipeline, the glue dripping head 400 is also displaced in the upper, lower, left, right, front and back directions through a linear driving mechanism in the conventional X, Y, Z three directions, the glue dripping components and the principle adopt the prior technical scheme, glue filling treatment is carried out in threaded holes of screwed screws during operation, the sealing performance of the glue dripping head is improved, glue can fall into the edge sometimes when the glue is filled, and can be blown in the circumferential direction of the glue more easily into the threaded holes through the arrangement of the air blowing components 401 while the glue dripping, reduce the overflow of glue and improve the product quality.
The air blowing assembly 401 further comprises an inner sleeve ring 412, the lower end of the inner sleeve ring 412 is rotatably inserted into the outer sleeve ring 411, the upper end of the outer sleeve ring 411 is rotatably and hermetically matched with the inner sleeve ring 412, a half ring 413 is formed at the bottom end of the inner sleeve ring 412 corresponding to the air blowing hole 402, the half ring 413 partially covers the air blowing hole 402, a ring of toothed ring is arranged at the top end of the inner sleeve ring 412 along the circumferential direction, a driving motor is mounted on the glue dripping head 400 and is in meshing transmission with the toothed ring through a gear to drive the inner sleeve ring 412 to rotate, the half ring 413 partially covers the air blowing hole 402 and leaks a part of air blown out of the air blowing hole 402, and in the rotating process of the inner sleeve ring 412, the effect of gradually blowing air in the inner cavity of the outer sleeve ring 411 along the circumferential direction of the screw hole can be formed, so that air blowing and air flow disturbance can be avoided.
The bottom end of the adsorption ring 301 is connected with a guide rod 311, and the guide rod 311 is connected with the mounting seat 302 in a sliding damping manner through an existing sliding damping linear bearing along the vertical direction, so that the adsorption ring 301 can rise at a constant speed, and the phenomenon that the adsorption ring is too fast in feeding and generates large impact force is avoided.
The bottom end of the resilient latch 504 has a reduced thickness portion 541 that is relatively small to facilitate insertion between two adjacent workpieces.
It should be noted that the above-mentioned contents only illustrate the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and it is obvious to those skilled in the art that several modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations fall within the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides an automatic change automobile door lock production line, includes conveyer (100) and auto-screwdriving machine (200), its characterized in that: the conveying device is characterized by further comprising a feeding machine (300), the conveyor (100) is a double-row conveyor, a conveying plate (101) is in transmission connection with the conveyor (100), a placing groove (111) is formed in the top surface of the conveying plate (101), a feeding hole (112) is formed in the middle of the placing groove (111), and a circle of electromagnets (113) is arranged in the placing groove (111) along the circumferential direction of the feeding hole (112);
the feeding machine (300) is provided with a feeding station, the conveyor (100) penetrates through the feeding station, an adsorption ring (301) which is used for being in adsorption fit with the electromagnet (113) is arranged in the feeding station and below the conveying plate (101), the lower end of the adsorption ring (301) is connected to an installation seat (302) in a sliding mode along the vertical direction, a feeding opening (311) is formed in one side of the adsorption ring (301), the edges of two ends of the feeding opening (311) are respectively connected with an arc-shaped flexible baffle sheet (312), and a feeding groove (313) is formed in the installation seat (302) and corresponds to the feeding opening (311);
the automatic screw locking machine (200) is provided with an electric screwdriver (201), and the electric screwdriver (201) is positioned in the feeding station and correspondingly arranged above the adsorption ring (301).
2. An automated automotive door lock production line as claimed in claim 1, wherein: electronic screwdriver (201) is including screwdriver head (211), the outside of screwdriver head (211) is equipped with along its length direction slip cover and is supported and press cover (212), and connects through spline synchronous drive between the two, it has the pressure spring to act on pressing cover (212), the lower extreme that supports and press cover (212) is including screwdriver head (211) cladding, the bottom surface that supports and press cover (212) is equipped with a plurality of non-slip raised along its circumference is protruding.
3. An automated automotive door lock production line as claimed in claim 1, wherein: the utility model discloses a glue dripping machine, including material loading station, rubber coating head, air blowing component, air blowing hole, air outlet, rubber coating head, rubber coating (400), rubber coating head, rubber coating.
4. An automated automotive door lock production line as claimed in claim 3, wherein: the air blowing assembly (401) further comprises an inner sleeve ring (412), the lower end of the inner sleeve ring (412) is rotatably inserted into the outer sleeve ring (411), the upper end of the outer sleeve ring (411) is rotatably and hermetically matched with the inner sleeve ring (412), a half ring (413) is formed at the bottom end of the inner sleeve ring (412) corresponding to the air blowing hole (402), and the half ring (413) partially covers the air blowing hole (402).
5. An automated automotive door lock production line as claimed in claim 1, wherein: the bottom end of the adsorption ring (301) is connected with a guide rod (311), and the guide rod (311) is connected with the mounting seat (302) in a sliding damping mode along the vertical direction.
6. An automated automotive door lock production line as claimed in claim 1, wherein: the utility model discloses a vibration feeding machine, including feed chute (313), this vibration feeding machine's (500) top export has a defeated material pipeline (501), installs pushing equipment in this defeated material pipeline (501), pushing equipment includes a elevating system (502) and the straight line actuating mechanism (503) of being connected with elevating system (502) transmission, the lower extreme transmission of elevating system (502) is connected with elastic fixture block (504) of a pair of vertical setting, is formed with the space of placing that is used for the card to go into the work piece between this a pair of elastic fixture block (504), elevating system (502) are driven by straight line actuating mechanism (503) and are made the displacement along defeated material pipeline (501) to the direction of feed chute (313).
7. An automated automotive door lock production line as claimed in claim 1, wherein: the bottom end of the elastic fixture block (504) is provided with a thinning part (541).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210238268.3A CN114535993B (en) | 2022-03-10 | 2022-03-10 | Automatic automobile door lock production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210238268.3A CN114535993B (en) | 2022-03-10 | 2022-03-10 | Automatic automobile door lock production line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114535993A true CN114535993A (en) | 2022-05-27 |
| CN114535993B CN114535993B (en) | 2022-12-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210238268.3A Active CN114535993B (en) | 2022-03-10 | 2022-03-10 | Automatic automobile door lock production line |
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| Country | Link |
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| CN (1) | CN114535993B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20010049874A1 (en) * | 1997-09-25 | 2001-12-13 | Osamu Okuda | Apparatus for holding component, and apparatus for mounting component |
| CN204893382U (en) * | 2015-07-15 | 2015-12-23 | 东莞市运泰自动化科技有限公司 | Automatic upset piano lock screw device |
| CN107470898A (en) * | 2017-09-25 | 2017-12-15 | 上海莘翔自动化科技有限公司 | A kind of automatic lock pays device |
| CN208913501U (en) * | 2018-11-05 | 2019-05-31 | 中山市贝尔斯特机电设备有限公司 | A kind of steel ball automatic charging device based on magnetic-adsorption |
| CN209477670U (en) * | 2018-12-13 | 2019-10-11 | 广东锐军智能设备有限公司 | A kind of three-dimensional automatic locking screw machine |
| CN111618583A (en) * | 2020-06-29 | 2020-09-04 | 福建艺达电驱动股份有限公司 | Driving motor production line |
| CN211846333U (en) * | 2019-11-04 | 2020-11-03 | 无锡庆源激光科技有限公司 | Electromagnet adsorption pipe feeding device |
| CN113857832A (en) * | 2021-09-10 | 2021-12-31 | 福建晟哲自动化科技有限公司 | Screw machine type switching mechanism of automatic screw locking machine |
| CN215657648U (en) * | 2021-08-28 | 2022-01-28 | 上海沿浦金属制品股份有限公司 | Screw filling device for production line |
-
2022
- 2022-03-10 CN CN202210238268.3A patent/CN114535993B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010049874A1 (en) * | 1997-09-25 | 2001-12-13 | Osamu Okuda | Apparatus for holding component, and apparatus for mounting component |
| CN204893382U (en) * | 2015-07-15 | 2015-12-23 | 东莞市运泰自动化科技有限公司 | Automatic upset piano lock screw device |
| CN107470898A (en) * | 2017-09-25 | 2017-12-15 | 上海莘翔自动化科技有限公司 | A kind of automatic lock pays device |
| CN208913501U (en) * | 2018-11-05 | 2019-05-31 | 中山市贝尔斯特机电设备有限公司 | A kind of steel ball automatic charging device based on magnetic-adsorption |
| CN209477670U (en) * | 2018-12-13 | 2019-10-11 | 广东锐军智能设备有限公司 | A kind of three-dimensional automatic locking screw machine |
| CN211846333U (en) * | 2019-11-04 | 2020-11-03 | 无锡庆源激光科技有限公司 | Electromagnet adsorption pipe feeding device |
| CN111618583A (en) * | 2020-06-29 | 2020-09-04 | 福建艺达电驱动股份有限公司 | Driving motor production line |
| CN215657648U (en) * | 2021-08-28 | 2022-01-28 | 上海沿浦金属制品股份有限公司 | Screw filling device for production line |
| CN113857832A (en) * | 2021-09-10 | 2021-12-31 | 福建晟哲自动化科技有限公司 | Screw machine type switching mechanism of automatic screw locking machine |
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|---|---|
| CN114535993B (en) | 2022-12-06 |
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Effective date of registration: 20230919 Address after: 230000 B-2704, wo Yuan Garden, 81 Ganquan Road, Shushan District, Hefei, Anhui. Patentee after: HEFEI LONGZHI ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. Address before: No. 106 Zhineng Avenue, International Education Park, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU VOCATIONAL University |
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