CN106378496A - Relief grinding machine provided with stand column - Google Patents
Relief grinding machine provided with stand column Download PDFInfo
- Publication number
- CN106378496A CN106378496A CN201611053402.3A CN201611053402A CN106378496A CN 106378496 A CN106378496 A CN 106378496A CN 201611053402 A CN201611053402 A CN 201611053402A CN 106378496 A CN106378496 A CN 106378496A
- Authority
- CN
- China
- Prior art keywords
- column
- line rail
- guide
- rail
- guide rail
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F15/00—Methods or machines for making gear wheels of special kinds not covered by groups B23F7/00 - B23F13/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/56—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism
- B23Q1/58—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism a single sliding pair
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/44—Movable or adjustable work or tool supports using particular mechanisms
- B23Q1/56—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism
- B23Q1/60—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism
- B23Q1/62—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides
- B23Q1/621—Movable or adjustable work or tool supports using particular mechanisms with sliding pairs only, the sliding pairs being the first two elements of the mechanism two sliding pairs only, the sliding pairs being the first two elements of the mechanism with perpendicular axes, e.g. cross-slides a single sliding pair followed perpendicularly by a single sliding pair
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/26—Fluid-pressure drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/28—Electric drives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/22—Feeding members carrying tools or work
- B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
- B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
- B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Machine Tool Units (AREA)
Abstract
The invention discloses a relief grinding machine provided with a stand column. The relief grinding machine provided with the stand column comprises a base, the stand column, a first linear rail, a second linear rail, a guide rail groove, a relief grinding mechanism, a vertical driving mechanism, a first guide rail, a second guide rail, a workbench and a horizontal driving mechanism. In this way, during relief grinding, a clamp can be positioned and mounted on the workbench; then a machined part is positioned on the clamp; the vertical driving mechanism drives the relief grinding mechanism to move downwards, and the horizontal driving mechanism drives the workbench to move horizontally along the first guide rail and the second guide rail, so that the machined part makes contact with the relief grinding mechanism and moves relative to the relief grinding mechanism, and thus relief grinding is completed; and since the relief grinding mechanism is clamped in the guide rail groove, during relief grinding, the relief grinding mechanism is limited and supported by the side walls of the guide rail groove, single-side stress of the first linear rail and the second linear rail is avoided, the first linear rail and the second linear rail are protected accordingly, and the service life of the relief grinding machine is prolonged.
Description
Technical field
The present invention relates to field of machining is and in particular to a kind of column relief grinder.
Background technology
Relief grinder backing-off cutting processing is to scoop up the surface of processing workpiece from level to level, and by its up bending.Therefore, teeth
Machine when backing-off cutting is processed, the head of relief grinder one side stress；On current relief grinder, guide effect is played all to teeth head
It is line rail, and the steering capability of line rail is good, but line rail poor rigidity, therefore, when backing-off cutting is processed, line rail one side stress, thus
Easily cause the deformation of line rail, thus reducing the service life of relief grinder.In view of disadvantages described above, it is necessary in fact to design a kind of column
Relief grinder.
Content of the invention
The technical problem to be solved is：A kind of column relief grinder is provided, to solve existing relief grinder line
Rail one side stress, easily causes the deformation of line rail and reduces the problem of the service life of relief grinder.
For solving above-mentioned technical problem, the technical scheme is that：A kind of column relief grinder, including base with located at institute
State the column of base side, described column front end both sides are parallel to be provided with First Line rail and the second line rail；Described column is provided with leads
Track slot, the two sides of described guide-track groove are parallel to each other with described First Line rail and described second line rail；It is provided with described guide-track groove
Backing-off cutting mechanism；One upright driving mechanism drives described backing-off cutting mechanism along described First Line rail and described second line rail and guide-track groove
Move up and down；On described base parallel be provided with the first guide rail and the second guide rail and drive a workbench along described first guide rail and
The horizontal drive mechanism of the second slide.
Further, described backing-off cutting mechanism includes mounting seat and the perching knife located at described mounting seat bottom；Described mounting seat with
Described First Line rail is fixedly connected with the sliding sleeve of described second line rail.
Further, described mounting seat is provided with limited step, the two sides of described limited step respectively with described guide-track groove
Two sides laminating.
Further, described upright driving mechanism is servo-actuating device or hydraulic drive mechanism；Described horizontal drive mechanism
For servo-actuating device or hydraulic drive mechanism.
Further, described upright driving mechanism includes the first servomotor, the first nut sleeve, first shaft coupling and first
Bar；Described first servomotor is located at described column upper end；Described first nut sleeve is in described backing-off cutting mechanism；Described first
Screw mandrel runs through described first nut sleeve；Described first shaft coupling is between described first servomotor and described first screw mandrel.
Further, described upright driving mechanism includes first hydraulic cylinder located at described column upper end and located at described
One hydraulic cylinder bottom the first push rod；Described first hydraulic cylinder promotes described backing-off cutting mechanism along described First Line rail and described second line
Rail slides up and down.
Further, described horizontal drive mechanism includes the second servomotor, the second nut sleeve, second shaft coupling and second
Bar；Described second servomotor is located at described base side；Described second nut sleeve is in described workbench；Described second
Bar runs through described second nut sleeve；Described second shaft coupling is between described second servomotor and described second screw mandrel.
Further, described horizontal drive mechanism includes second hydraulic cylinder located at described base side and located at described
Second push rod of two hydraulic cylinder one end；Described second hydraulic cylinder promotes described workbench along described firstth guide rail and described second
Guide rail level is slided.
Compared with prior art, this column relief grinder, the column including base with located at base side, described column front end
Both sides are parallel to be provided with First Line rail and the second line rail；Described column is provided with guide-track groove, the two sides of described guide-track groove with described
First Line rail and described second line rail are parallel to each other；It is provided with backing-off cutting mechanism in described guide-track groove；One upright driving mechanism drives institute
State backing-off cutting mechanism to move up and down along described First Line rail and described second line rail and guide-track groove；Parallel on described base it is provided with
One guide rail and the second guide rail and drive a workbench along the horizontal drive mechanism of described first guide rail and the second slide.Cause
Fixture, when backing-off cutting is processed, can be positioned, install on the table by this；Again workpiece is positioned on fixture；By vertically driving
Mechanism drives backing-off cutting mechanism down to move, and horizontal drive mechanism drives workbench along the first guide rail and the second guide rail horizontal movement,
Make workpiece and backing-off cutting mechanism contacts relative motion, thus completing backing-off cutting processing；Because backing-off cutting mechanism is to be stuck in guide-track groove
Interior；Therefore, in backing-off cutting, spacing and supporting role is played to backing-off cutting mechanism by the side wall of guide-track groove, it is to avoid First Line rail and
Second line rail one side stress, thus reach playing a protective role to First Line rail and the second line rail, improves the use of relief grinder
Life-span.
Brief description
Fig. 1 is the three-dimensional view of column relief grinder of the present invention；
Fig. 2 is the three-dimensional view of column relief grinder of the present invention；
Fig. 3 is the sectional view of upright driving mechanism described in column relief grinder of the present invention
Fig. 4 is the sectional view of horizontal mechanism described in column relief grinder of the present invention
Fig. 5 is the partial enlarged view of column relief grinder of the present invention.
Specific embodiment
Following specific embodiment will further illustrate in conjunction with above-mentioned accompanying drawing.
Hereinafter, multiple specific detail are elaborated, to provide saturating to the concept constituting described embodiment basis
Thorough understanding.However, it will be apparent to those skilled in the art that described embodiment can not have these specific detail
In some or all in the case of putting into practice.In other cases, do not specifically describe well-known process step.
As Figure 1-5, a kind of column relief grinder, the column 2 including base 1 with located at described base 1 side, described vertical
Post 2 front end both sides are parallel to be provided with First Line rail 3 and the second line rail 4；Described column 2 is provided with guide-track groove 5, described guide-track groove 5
Two sides are parallel to each other with described First Line rail 3 and described second line rail 4；It is provided with backing-off cutting mechanism 6 in described guide-track groove 5；One erects
Straight drive mechanism 7 drives described backing-off cutting mechanism 6 to transport about 5 along described First Line rail 3 and described second line rail 4 and guide-track groove
Dynamic；On described base 1, parallel the first guide rail 8 and the second guide rail 9 and driving one workbench 10 of being provided with is along described first guide rail 8 He
The horizontal drive mechanism 11 that second guide rail 9 slides.Therefore, when backing-off cutting is processed, fixture can be positioned, be arranged on workbench 10
On；Again workpiece is positioned on fixture；Backing-off cutting mechanism 6 is driven down to move by upright driving mechanism 7, horizontal drive mechanism 11
Drive workbench 10 along the first guide rail 8 with the second guide rail 9 horizontal movement so that workpiece is contacted with backing-off cutting mechanism 6 and relatively transports
Dynamic, thus completing backing-off cutting processing；Because backing-off cutting mechanism 6 is to be stuck in guide-track groove 5；Therefore, in backing-off cutting, by guide-track groove 5
Side wall plays spacing and supporting role to backing-off cutting mechanism 6, it is to avoid First Line rail 3 and the unilateral stress of the second line rail 4, thus reach right
First Line rail 3 and the second line rail 4 play a protective role, and improve the service life of relief grinder.
Further, described backing-off cutting mechanism 6 includes mounting seat 61 and the perching knife 62 located at described mounting seat 61 bottom；Described peace
Dress seat 61 is fixedly connected with the slide unit of described First Line rail 3 and described second line rail 4.
Further, described mounting seat 61 is provided with limited step 610, the two sides of described limited step 610 respectively with institute
State the two sides laminating of guide-track groove 5.Hence in so that mounting seat 61 is coordinated with column 2.
Further, described upright driving mechanism 7 is servo-actuating device or hydraulic drive mechanism；Described horizontal drive mechanism
11 is servo-actuating device or hydraulic drive mechanism.
As shown in figure 3, described upright driving mechanism 7 includes the first servomotor 71, the first nut sleeve 72, first shaft coupling
73 and first screw mandrel 74；Described first servomotor 71 is located at described column 2 upper end；Described first nut sleeve 72 is located at described shovel
Cut in mechanism 6；Described first screw mandrel 74 runs through described first nut sleeve 72；Described first shaft coupling 73 is located at described first servo
Between motor 71 and described first screw mandrel 74.Therefore, the first screw mandrel 74 is driven to rotate by the first servomotor 71, by first
Screw mandrel 74 is coordinated with the first nut sleeve 72, and backing-off cutting mechanism 6 therefore can be driven to move up and down.
As shown in Fig. 2 described upright driving mechanism 7 includes the first hydraulic cylinder 701 located at described column 2 upper end and sets
In described first hydraulic cylinder 701 bottom the first push rod 702；Described first hydraulic cylinder 701 promotes described backing-off cutting mechanism 6 along described
One line rail 3 and described second line rail 4 slide up and down.
As shown in figure 4, described horizontal drive mechanism 11 includes the second servomotor 111, the second nut sleeve 112, second
Axial organ 113 and the second screw mandrel 114；Described second servomotor 111 is located at described base 1 side；Described second nut sleeve 112 sets
In described workbench 10；Described second screw mandrel 114 runs through described second nut sleeve 112；Described second shaft coupling 113 is located at institute
State between the second servomotor 111 and described second screw mandrel 114.Therefore, the second screw mandrel is driven by the second servomotor 101
114 rotations, the second screw mandrel 114 is coordinated with the second nut sleeve 112, thus reaching driving workbench 10 horizontal movement.
As shown in Fig. 2 described horizontal drive mechanism 11 include second hydraulic cylinder 121 located at described base 1 side and
The second push rod 122 located at described second hydraulic cylinder 121 one end；Described second hydraulic cylinder 121 promotes described workbench 10 along institute
State the firstth guide rail 8 and described second guide rail 9 level is slided.
The present invention is not limited to above-mentioned specific embodiment, those of ordinary skill in the art from above-mentioned design,
Without performing creative labour, a variety of conversion made, it is within the scope of the present invention.
Claims (8)
1. a kind of column relief grinder, the column including base with located at described base side it is characterised in that：Described column front end
Both sides are parallel to be provided with First Line rail and the second line rail；Described column is provided with guide-track groove, the two sides of described guide-track groove with described
First Line rail and described second line rail are parallel to each other；It is provided with backing-off cutting mechanism in described guide-track groove；One upright driving mechanism drives institute
State backing-off cutting mechanism to move up and down along described First Line rail and described second line rail and guide-track groove；Parallel on described base it is provided with
One guide rail and the second guide rail and drive a workbench along the horizontal drive mechanism of described first guide rail and the second slide.
2. column relief grinder as claimed in claim 1 is it is characterised in that described backing-off cutting mechanism includes mounting seat and located at described
The perching knife of mounting seat bottom；Described mounting seat is fixedly connected with the slide unit of described First Line rail and described second line rail.
3. column relief grinder as claimed in claim 2 is it is characterised in that described mounting seat is provided with limited step, described limit
Fitted with the two sides of described guide-track groove respectively in the two sides of position step.
4. the column relief grinder as described in claim 1 or 3 is it is characterised in that described upright driving mechanism is servo-drive machine
Structure or hydraulic drive mechanism；Described horizontal drive mechanism is servo-actuating device or hydraulic drive mechanism.
5. column relief grinder as claimed in claim 4 is it is characterised in that described upright driving mechanism includes the first servo electricity
Machine, the first nut sleeve, first shaft coupling and the first screw mandrel；Described first servomotor is located at described column upper end；Described first
Nut sleeve is in described backing-off cutting mechanism；Described first screw mandrel runs through described first nut sleeve；Described first shaft coupling is located at institute
State between the first servomotor and described first screw mandrel.
6. column relief grinder as claimed in claim 4 is it is characterised in that described upright driving mechanism is included located at described column
The first hydraulic cylinder of upper end and located at described first hydraulic cylinder bottom first push rod；Described first hydraulic cylinder promotes described backing-off cutting
Mechanism slides up and down along described First Line rail and described second line rail.
7. column relief grinder as claimed in claim 4 is it is characterised in that described horizontal drive mechanism includes the second servo electricity
Machine, the second nut sleeve, second shaft coupling and the second screw mandrel；Described second servomotor is located at described base side；Described second
Nut sleeve is in described workbench；Described second screw mandrel runs through described second nut sleeve；Described second shaft coupling is located at described
Between second servomotor and described second screw mandrel.
8. column relief grinder as claimed in claim 4 is it is characterised in that described horizontal drive mechanism is included located at described base
The second hydraulic cylinder of side and the second push rod located at described second hydraulic cylinder one end；Described second hydraulic cylinder promotes described work
Station is slided along described firstth guide rail and described second guide rail level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611053402.3A CN106378496B (en) | 2016-11-24 | 2016-11-24 | A kind of column relief grinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611053402.3A CN106378496B (en) | 2016-11-24 | 2016-11-24 | A kind of column relief grinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106378496A true CN106378496A (en) | 2017-02-08 |
| CN106378496B CN106378496B (en) | 2019-07-05 |
Family
ID=57959738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611053402.3A Active CN106378496B (en) | 2016-11-24 | 2016-11-24 | A kind of column relief grinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106378496B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108856902A (en) * | 2018-09-17 | 2018-11-23 | 东莞市富其扬电子科技有限公司 | A kind of high-accuracy relief grinder |
| CN110948054A (en) * | 2019-12-23 | 2020-04-03 | 东莞微航实业有限公司 | Numerical control gear-shoveling machine |
| CN111468960A (en) * | 2020-04-21 | 2020-07-31 | 刘建国 | Numerical control gantry relieving machine beam structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201405202Y (en) * | 2009-05-04 | 2010-02-17 | 常州昌隆机床制造有限公司 | Beam compound guide rail for digital controlled planer machine |
| KR100948181B1 (en) * | 2009-07-28 | 2010-03-16 | 디티알주식회사 | Cnc multifunction relieving grinding machine |
| CN202174413U (en) * | 2011-06-17 | 2012-03-28 | 泉州隆盛精机有限公司 | Head mounting structure of planer type miller |
| CN205362688U (en) * | 2016-01-19 | 2016-07-06 | 施新宇 | Gear spader |
| CN205363270U (en) * | 2016-01-19 | 2016-07-06 | 施新宇 | Relief grinder's gantry -type structure |
| CN206263376U (en) * | 2016-11-24 | 2017-06-20 | 东莞市智锵实业有限公司 | A kind of column relief grinder |
-
2016
- 2016-11-24 CN CN201611053402.3A patent/CN106378496B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201405202Y (en) * | 2009-05-04 | 2010-02-17 | 常州昌隆机床制造有限公司 | Beam compound guide rail for digital controlled planer machine |
| KR100948181B1 (en) * | 2009-07-28 | 2010-03-16 | 디티알주식회사 | Cnc multifunction relieving grinding machine |
| CN202174413U (en) * | 2011-06-17 | 2012-03-28 | 泉州隆盛精机有限公司 | Head mounting structure of planer type miller |
| CN205362688U (en) * | 2016-01-19 | 2016-07-06 | 施新宇 | Gear spader |
| CN205363270U (en) * | 2016-01-19 | 2016-07-06 | 施新宇 | Relief grinder's gantry -type structure |
| CN206263376U (en) * | 2016-11-24 | 2017-06-20 | 东莞市智锵实业有限公司 | A kind of column relief grinder |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108856902A (en) * | 2018-09-17 | 2018-11-23 | 东莞市富其扬电子科技有限公司 | A kind of high-accuracy relief grinder |
| CN110948054A (en) * | 2019-12-23 | 2020-04-03 | 东莞微航实业有限公司 | Numerical control gear-shoveling machine |
| CN110948054B (en) * | 2019-12-23 | 2024-05-28 | 东莞微航实业有限公司 | Numerical control gear spading machine |
| CN111468960A (en) * | 2020-04-21 | 2020-07-31 | 刘建国 | Numerical control gantry relieving machine beam structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106378496B (en) | 2019-07-05 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A column shovel tooth machine Effective date of registration: 20230323 Granted publication date: 20190705 Pledgee: Bank of China Co.,Ltd. Dongguan Branch Pledgor: DONGGUAN ZHIQIANG INDUSTRIAL CO.,LTD. Registration number: Y2023980035824 |
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