CN107363622B - High security drilling equipment for machine-building - Google Patents
High security drilling equipment for machine-building Download PDFInfo
- Publication number
- CN107363622B CN107363622B CN201710818993.7A CN201710818993A CN107363622B CN 107363622 B CN107363622 B CN 107363622B CN 201710818993 A CN201710818993 A CN 201710818993A CN 107363622 B CN107363622 B CN 107363622B
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- CN
- China
- Prior art keywords
- motor
- drill bit
- base
- control system
- drilling
- 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.)
- Expired - Fee Related
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 31
- 230000001681 protective effect Effects 0.000 claims abstract description 21
- 238000004519 manufacturing process Methods 0.000 claims abstract description 19
- 238000003860 storage Methods 0.000 claims abstract description 12
- 238000007664 blowing Methods 0.000 claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000006378 damage Effects 0.000 abstract description 4
- 208000027418 Wounds and injury Diseases 0.000 abstract description 3
- 208000014674 injury Diseases 0.000 abstract description 3
- 230000001012 protector Effects 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract description 2
- 238000009434 installation Methods 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910052742 iron Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 125000003003 spiro group Chemical group 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0078—Safety devices protecting the operator, e.g. against accident or noise
- B23Q11/0089—Safety devices protecting the operator, e.g. against accident or noise actuating operator protecting means, e.g. closing a cover element, producing an alarm signal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B39/00—General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0042—Devices for removing chips
- B23Q11/005—Devices for removing chips by blowing
-
- 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
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0078—Safety devices protecting the operator, e.g. against accident or noise
- B23Q11/0082—Safety devices protecting the operator, e.g. against accident or noise by determining whether the operator is in a dangerous position
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Auxiliary Devices For Machine Tools (AREA)
Abstract
The invention relates to the technical field of drilling safety, and discloses a drilling device for high-safety machine manufacturing, which comprises: the device comprises a base, a baffle, a transparent protective cover, a scrap guide channel, a storage box, a plurality of blowing pipes, a plurality of universal pipe heads, a human body infrared sensor, a positioning plate, a protective device, a first motor, a coupler, a plurality of electromagnets and a control system; transparent protection cover sealing installation encloses between the top front side that keeps off and base, the rear side lower part that encloses the fender has been seted up and has been led the bits mouth, a plurality of electro-magnets are just evenly fixed in leading the bits mouth and lead the bits passageway, the storage box sets up the rear portion at the base, a plurality of universal tube head one-to-ones are installed on the mouth of pipe of a plurality of blowing pipes, the protector cover is established in the drill bit seat and the drill bit outside, human infrared inductor, first motor and a plurality of electro-magnet are connected with control system respectively, this kind of drilling equipment for high security machine-building, carry out all-round safety protection from many aspects, avoid drill bit or drill chip to cause the injury to the human.
Description
Technical Field
The invention relates to the technical field of mechanical drilling, in particular to a high-safety drilling device for mechanical manufacturing.
Background
The machine manufacturing industry is an industry that manufactures parts and products having certain collision positions and sizes and equips them into mechanical equipment. The products in the mechanical manufacturing industry can be directly used by people, and can also provide equipment for the production of other industries, so that various products in the mechanical or mechanical manufacturing industry exist in the society.
However, the safety of the conventional drilling device for mechanical manufacturing is not high, some safety accidents often occur, and how to improve the safety of the conventional drilling device for manufacturing has important significance.
Disclosure of Invention
The invention provides a high-safety drilling device for machine manufacturing, which can solve the problems in the prior art.
The invention provides a high-safety drilling device for machine manufacturing, which comprises: the device comprises a base, a baffle, a transparent protective cover, a scrap guide channel, a storage box, a plurality of blowing pipes, a plurality of universal pipe heads, a human body infrared sensor, a plurality of positioning plates, a protective device, a first motor, a coupler, a plurality of electromagnets and a control system;
the base is provided with a positioning seat, a plurality of positioning plates are detachably arranged on the positioning seat, the enclosure is fixed on the rear side of the top of the base, a transparent protective cover is hermetically arranged between the enclosure and the front side of the top of the base, the lower part of the rear side of the enclosure is provided with a scrap guide port, a scrap guide channel is arranged on the scrap guide port and communicated with the enclosure through the scrap guide port, a plurality of electromagnets are uniformly fixed in the scrap guide channel just opposite to the scrap guide port, a storage box is arranged on the rear part of the base and is hermetically communicated with the scrap guide channel, a plurality of blowpipes are arranged on the front side of the top of the base, a plurality of universal pipe heads are correspondingly arranged on pipe orifices of the plurality of blowpipes one by one, the plurality of blowpipes face the scrap guide port, the top of the first motor is arranged on the top of the inner side of the enclosure through a hydraulic rod and a linear guide rail, an output shaft, the human body infrared sensor is installed on the coupler, the protective device is sleeved on the outer sides of the drill bit seat and the drill bit, and the human body infrared sensor, the first motor and the electromagnets are respectively connected with the control system.
Further, the protection device comprises a second motor, two fixed pulleys, two chains, two steel wires and a corrugated sleeve, the second motor is fixed on the first motor, the two fixed pulleys are in transmission connection with the second motor through the chains and the gears respectively, the upper ends of the two steel wires are in one-to-one correspondence with the two fixed pulleys and are fixedly connected with the bottom of the corrugated sleeve, the upper end of the corrugated sleeve is fixed on the drill bit seat, a plurality of openings are longitudinally formed in the corrugated sleeve in the circumferential direction, and the second motor is connected with the control system.
Further, still include the protective housing, the protective housing is located the outside of second motor, two fixed pulleys and two chains.
Further, the blowpipe is an arc-shaped telescopic pipe.
Further, evenly be equipped with a plurality of recesses on the positioning seat, all be equipped with the draw-in groove on the inner wall of recess, be equipped with a plurality ofly on the locating plate and correspond just elasticity dop with adjustable length with recess and draw-in groove, be equipped with the screw hole that elasticity dop spiro union passes through on the locating plate.
Compared with the prior art, the invention has the beneficial effects that:
the invention carries out all-around safety protection from multiple aspects through the transparent protection cover, the plurality of blowpipes, the human body infrared sensor, the plurality of positioning plates, the protection device and the plurality of electromagnets, avoids the drill bit or drill cuttings from damaging the human body, and has high safety.
Drawings
Fig. 1 is a schematic structural diagram of a drilling device for high-safety machine manufacturing according to the present invention.
Fig. 2 is an enlarged schematic structural diagram of a protection device in the drilling device for high-safety machine manufacturing according to the present invention.
Fig. 3 is a schematic structural diagram of a positioning seat and a positioning plate in the drilling device for high-safety machine manufacturing according to the present invention.
Description of reference numerals:
1-base, 2-enclosure, 3-transparent protective cover, 4-scrap guide channel, 5-storage box, 6-blowing pipe, 7-universal pipe head, 8-positioning seat, 9-human body infrared sensor, 10-positioning plate, 11-protective device, 11-1-second motor, 11-2-fixed pulley, 11-3-chain, 11-4-steel wire, 11-5-corrugated sleeve, 11-6-opening, 12-first motor, 13-coupler, 14-electromagnet and 15-protective shell.
Detailed Description
An embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the embodiment.
As shown in fig. 1, 2 and 3, a high-safety drilling device for machine manufacturing according to an embodiment of the present invention includes: the device comprises a base 1, a barrier 2, a transparent protective cover 3, a scrap guide channel 4, a storage box 5, a plurality of blowpipes 6, a plurality of universal pipe heads 7, a human body infrared sensor 9, a plurality of positioning plates 10, a protective device 11, a first motor 12, a coupler 13, a plurality of electromagnets 14 and a control system;
the base 1 is provided with a positioning seat 8, a plurality of positioning plates 10 are detachably arranged on the positioning seat 8, the enclosure 2 is fixed on the rear side of the top of the base 1, a transparent protective cover 3 is hermetically arranged between the enclosure 2 and the front side of the top of the base 1, the lower part of the rear side of the enclosure 2 is provided with a scrap guiding port, a scrap guiding channel 4 is arranged on the scrap guiding port, the scrap guiding channel 4 is communicated with the enclosure 2 through the scrap guiding port, a plurality of electromagnets 14 are uniformly fixed in the scrap guiding channel 4 just opposite to the scrap guiding port, a storage box 5 is arranged at the rear part of the base 1, the storage box 5 is hermetically communicated with the scrap guiding channel 4, a plurality of blowpipes 6 are arranged on the front side of the top of the base 1, a plurality of universal pipe heads 7 are correspondingly arranged on the pipe orifices of the plurality of blowpipes 6 one by one to one, the plurality of blowpipes 6 face the scrap guiding port, the top of a first motor 12 is arranged on the top of the inner, the drill bit is installed on the drill bit seat, the human body infrared sensor 9 is installed on the coupler 13, the protection device 11 is sleeved on the outer sides of the drill bit seat and the drill bit, and the human body infrared sensor 9, the first motor 12 and the electromagnets 14 are respectively connected with the control system.
As shown in fig. 3, evenly be equipped with a plurality of recesses on the positioning seat 8, all be equipped with the draw-in groove on the inner wall of recess, be equipped with a plurality of elasticity dops that correspond with recess and draw-in groove on the locating plate 10, the length of elasticity dop is adjustable, be equipped with the screw hole that elasticity dop spiro union passes through on the locating plate 10, the locating plate 10 is applicable to the drilling board of treating of different thickness, the locating plate 10 will be treated the drilling board and tightly fix at positioning seat 8, avoid treating the drilling board activity, thereby promote the precision of drilling, improve the security of drilling.
The working process is as follows: the drill plate is placed on the positioning seat 8, the drill plate is fixed through the positioning plates 10, after the drill plate is fixed, according to the position of the drill plate, the air blowing direction is adjusted through the universal pipe heads 7 on the air blowing pipes 6, air is blown to the drill plate, the air blowing pipes 6 are respectively connected with a compressed air source through pipelines, drill cuttings are blown into the scrap guiding ports, the drill cuttings enter the scrap guiding channels 4 through the scrap guiding ports and then fall into the storage box 5, if the drill cuttings are iron cuttings, the air blowing pipes 6 are combined with the electromagnets 14 in the scrap guiding channels 4 to adsorb the iron cuttings, the control system controls the electromagnets 14 to be electrified intermittently, accordingly the iron cuttings are adsorbed and fall circularly, and the iron cuttings cleaning effect is good.
Control system starts first motor 12 including the main control system and the control panel that are equipped with the singlechip through the main control system, and first motor 12 treats the drilling plate and drills under the effect of hydraulic stem and linear guide according to the procedure of setting for in the singlechip, and the in-process protector 11 of drilling falls and protects the drill bit, avoids the drill bit to hinder the people.
The human body infrared sensor 9 senses whether a person exists in the set range, and if the person exists, the control system controls the first motor 12 to stop, so that the drill bit is prevented from hurting the person.
The invention carries out all-around safety protection from multiple aspects through the transparent protection cover 3, the plurality of blowpipes 6, the human body infrared sensor 9, the positioning plate 10, the protection device 11 and the plurality of electromagnets 14, avoids the drill bit or drill cuttings from causing damage to the human body and has high safety.
Further, as shown in fig. 2, the guard 11 includes a second motor 11-1, two fixed pulleys 11-2, the drill bit comprises two chains 11-3, two steel wires 11-4 and a corrugated sleeve 11-5, wherein a second motor 11-1 is fixed on a first motor 12, two fixed pulleys 11-2 are in transmission connection with the second motor 11-1 through one chain 11-3 and a gear respectively, the upper ends of the two steel wires 11-4 are in one-to-one correspondence with the two fixed pulleys 11-2, the lower ends of the two steel wires 11-4 are fixedly connected with the bottom of the corrugated sleeve 11-5, the upper end of the corrugated sleeve 11-5 is fixed on a drill bit seat, a plurality of openings 11-6 are longitudinally formed in the circumferential direction of the corrugated sleeve 11-5, and the second motor 11-1 is connected with a control system.
The control system controls a second motor 11-1 to start, the second motor drives two fixed pulleys 11-2 to rotate through two chains 11-3, gears are arranged on an output shaft of the second motor 11-1 and a rotating shaft of the fixed pulley 11-2, the second motor 11-1 and the fixed pulley 11-2 are in transmission connection through the gears and the chains, the two fixed pulleys 11-2 drive two steel wires 11-4 to descend along the fixed pulley 11-2, the bottom of a corrugated sleeve 11-5 also descends along with the steel wires 11-4, the drill bit is protected, drill cuttings overflow the corrugated sleeve 11-5 through the plurality of openings 11-6 formed in the corrugated sleeve 11-5 in the longitudinal direction, the drill cuttings are prevented from being accumulated to influence drilling, the distance of the corrugated sleeve 11-5 can be freely adjusted along with the depth of the drilling, and the drill bit protection effect is good.
Further, the protective shell 15 is further included, and the protective shell 15 is located on the outer side of the second motor 11-1, the two fixed pulleys 11-2 and the two chains 11-3.
The protective shell 15 is used for protecting the second motor 11-1, the two fixed pulleys 11-2 and the two chains 11-3, and preventing the drill cuttings from influencing the normal operation of the protective device 11.
Further, the blowpipe 6 is an arc-shaped telescopic pipe.
The arc-shaped telescopic pipe can adjust the height of the blowing pipe 6 to adapt to the plates to be drilled with different thicknesses.
The above disclosure is only for a few specific embodiments of the present invention, however, the present invention is not limited to the above embodiments, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (5)
1. A drilling device for high-safety machine manufacturing is characterized by comprising: the device comprises a base (1), a baffle (2), a transparent protective cover (3), a scrap guide channel (4), a storage box (5), a plurality of blowing pipes (6), a plurality of universal pipe heads (7), a human body infrared sensor (9), a plurality of positioning plates (10), a protective device (11), a first motor (12), a coupler (13), a plurality of electromagnets (14) and a control system;
the base (1) is provided with a positioning seat (8), a plurality of positioning plates (10) are detachably arranged on the positioning seat (8), the enclosure (2) is fixed on the rear side of the top of the base (1), the transparent protective cover (3) is hermetically arranged between the enclosure (2) and the front side of the top of the base (1), the lower part of the rear side of the enclosure (2) is provided with a chip guide port, a chip guide channel (4) is arranged on the chip guide port, the chip guide channel (4) is communicated with the enclosure (2) through the chip guide port, a plurality of electromagnets (14) are uniformly fixed in the chip guide channel (4) just opposite to the chip guide port, the storage box (5) is arranged on the rear part of the base (1), the storage box (5) is hermetically communicated with the chip guide channel (4), a plurality of blowpipes (6) are all arranged on the front side of the top of the base (1), a plurality of universal pipe heads (7) are correspondingly arranged on the mouths of the blowpipes (, the blowing pipes (6) face the chip guide port, the top of the first motor (12) is installed at the top of the inner side of the enclosure (2) through a hydraulic rod and a linear guide rail, an output shaft of the first motor (12) is fixedly connected with the drill bit seat through a coupler (13), the drill bit is installed on the drill bit seat, the human body infrared sensor (9) is installed on the coupler (13), the protection device (11) is sleeved on the outer sides of the drill bit seat and the drill bit, and the human body infrared sensor (9), the first motor (12) and the electromagnets (14) are respectively connected with the control system;
the control system comprises a control host and a control panel, wherein the control host is provided with a single chip microcomputer, a first motor (12) is started through the control host in the control system, and the first motor (12) drills a plate to be drilled under the action of a hydraulic rod and a linear guide rail according to a program set in the single chip microcomputer.
2. The drilling device for high-safety machine manufacturing according to claim 1, wherein the guard (11) comprises a second motor (11-1), two fixed pulleys (11-2), two chains (11-3), two steel wires (11-4) and a corrugated sleeve (11-5), the second motor (11-1) is fixed on the first motor (12), the two fixed pulleys (11-2) are respectively connected with the second motor (11-1) through one chain (11-3) and a gear in a transmission manner, the upper ends of the two steel wires (11-4) are fixedly connected with the two fixed pulleys (11-2) in a one-to-one correspondence manner, the lower ends of the two steel wires (11-4) are fixedly connected with the bottom of the corrugated sleeve (11-5), and the upper end of the corrugated sleeve (11-5) is fixed on a drill bit seat, a plurality of openings (11-6) are longitudinally formed in the circumferential direction of the corrugated sleeve (11-5), and the second motor (11-1) is connected with a control system.
3. The drilling apparatus for high-safety machine manufacturing according to claim 2, further comprising a protective case (15), wherein the protective case (15) is located outside the second motor (11-1), the two fixed pulleys (11-2), and the two chains (11-3).
4. The high-safety drilling device for machine manufacturing according to claim 1, wherein the blowpipe (6) is an arc-shaped telescopic pipe.
5. The drilling apparatus for high-safety machine manufacturing according to claim 1, wherein a plurality of grooves are uniformly formed on the positioning base (8), a plurality of locking grooves are formed on the inner walls of the grooves, a plurality of elastic chucks with adjustable lengths are formed on the positioning plate (10) and correspond to the grooves and the locking grooves, and a threaded hole through which the elastic chucks are screwed is formed on the positioning plate (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710818993.7A CN107363622B (en) | 2017-09-12 | 2017-09-12 | High security drilling equipment for machine-building |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710818993.7A CN107363622B (en) | 2017-09-12 | 2017-09-12 | High security drilling equipment for machine-building |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107363622A CN107363622A (en) | 2017-11-21 |
| CN107363622B true CN107363622B (en) | 2020-07-03 |
Family
ID=60302586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710818993.7A Expired - Fee Related CN107363622B (en) | 2017-09-12 | 2017-09-12 | High security drilling equipment for machine-building |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107363622B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4132497A (en) * | 1976-07-23 | 1979-01-02 | Weller Stanley T | Drilling machines and guards therefor |
| CN105945321A (en) * | 2016-06-20 | 2016-09-21 | 徐秀 | High-safety drilling device for mechanical manufacture |
| CN205949908U (en) * | 2016-08-29 | 2017-02-15 | 李建兰 | Forced air cooling steel sheet drilling machine |
| CN205949896U (en) * | 2016-08-24 | 2017-02-15 | 天津曹氏传动机械制造有限公司 | Drilling machine is used in high machine -building of security |
| CN206216316U (en) * | 2016-08-29 | 2017-06-06 | 成都科创诺商贸有限公司 | A kind of reliable square plate drilling machine of clamping |
| CN206382944U (en) * | 2016-12-08 | 2017-08-08 | 无锡市彩云机械设备有限公司 | A kind of drilling machine for being easy to slug collection |
-
2017
- 2017-09-12 CN CN201710818993.7A patent/CN107363622B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4132497A (en) * | 1976-07-23 | 1979-01-02 | Weller Stanley T | Drilling machines and guards therefor |
| CN105945321A (en) * | 2016-06-20 | 2016-09-21 | 徐秀 | High-safety drilling device for mechanical manufacture |
| CN205949896U (en) * | 2016-08-24 | 2017-02-15 | 天津曹氏传动机械制造有限公司 | Drilling machine is used in high machine -building of security |
| CN205949908U (en) * | 2016-08-29 | 2017-02-15 | 李建兰 | Forced air cooling steel sheet drilling machine |
| CN206216316U (en) * | 2016-08-29 | 2017-06-06 | 成都科创诺商贸有限公司 | A kind of reliable square plate drilling machine of clamping |
| CN206382944U (en) * | 2016-12-08 | 2017-08-08 | 无锡市彩云机械设备有限公司 | A kind of drilling machine for being easy to slug collection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107363622A (en) | 2017-11-21 |
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Granted publication date: 20200703 |