CN109109260A - A kind of plastic part borehole drill construction of band detection - Google Patents
A kind of plastic part borehole drill construction of band detection Download PDFInfo
- Publication number
- CN109109260A CN109109260A CN201810897329.0A CN201810897329A CN109109260A CN 109109260 A CN109109260 A CN 109109260A CN 201810897329 A CN201810897329 A CN 201810897329A CN 109109260 A CN109109260 A CN 109109260A
- Authority
- CN
- China
- Prior art keywords
- rotor
- movable table
- mandrel
- downlink
- rotor base
- 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
- 239000004033 plastic Substances 0.000 title claims abstract description 30
- 229920003023 plastic Polymers 0.000 title claims abstract description 30
- 238000001514 detection method Methods 0.000 title claims abstract description 13
- 238000010276 construction Methods 0.000 title claims abstract description 12
- NBGBEUITCPENLJ-UHFFFAOYSA-N Bunazosin hydrochloride Chemical compound Cl.C1CN(C(=O)CCC)CCCN1C1=NC(N)=C(C=C(OC)C(OC)=C2)C2=N1 NBGBEUITCPENLJ-UHFFFAOYSA-N 0.000 claims description 36
- 238000005259 measurement Methods 0.000 claims description 2
- 230000035515 penetration Effects 0.000 claims 1
- 239000002985 plastic film Substances 0.000 abstract description 28
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010009 beating Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 6
- 238000004080 punching Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010411 cooking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C45/0055—Shaping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/08—Means for actuating the cutting member to effect the cut
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D5/08—Means for actuating the cutting member to effect the cut
- B26D5/12—Fluid-pressure means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/27—Means for performing other operations combined with cutting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/16—Perforating by tool or tools of the drill type
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/76—Measuring, controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0053—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor combined with a final operation, e.g. shaping
- B29C45/0055—Shaping
- B29C2045/0058—Shaping removing material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Manufacturing & Machinery (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
Abstract
The present invention relates to a kind of plastic part borehole drill construction of band detection, including stand and set on stand front end can uplink and downlink movable table, the movable table driven uplink and downlink by movable table driving device；The movable table is equipped with a motor, the motor lower side output terminal is equipped with mandrel, it is equipped with center thorn stick on the downside of the mandrel, is arranged with rotor outside the mandrel, unilateral bearing contact load is equipped between the rotor and mandrel to which rotor is rotatably arranged on mandrel；The beneficial effects of the present invention are: the macropore of beating of plastic sheet on plastic part can be conveniently accomplished and worked, trepanning velocity is fast, can flexibly be used for various automatic production lines.
Description
Technical field
The present invention relates to a plastic part borehole drill constructions, for example drill on plastic tube or plastic plate.
Background technique
In present plastic pipe formed after injection molding such as cooking fume exhaust pipe, there are also on some plastic panels, many holes are due to opening
Mould cost relation needs post-production, is unable to one-pass molding, needs to lay plastic eyelet at the reserved punching of injection molding.Due to plastics
Hole is bigger, and plastics are again more frivolous at punching, is punched using traditional drilling machine or milling machine, very troublesome and time-consuming.
Summary of the invention
In order to overcome the shortcomings of that existing plastic part beats macropore inconvenience, the present invention provides a kind of plastic part drilling of band detection
Mechanism.
The present invention the technical solution to solve the technical problem is that: a kind of plastic part borehole drill construction of band detection, including stand
And set on stand front end can uplink and downlink movable table, the movable table driven uplink and downlink by movable table driving device；It is described
Movable table is equipped with a motor, and the motor lower side output terminal is equipped with mandrel, and center thorn stick is equipped on the downside of the mandrel, described
It is arranged with rotor outside mandrel, unilateral bearing contact load is equipped between the rotor and mandrel to which rotor is rotatably arranged on
On mandrel；A rotor base of the middle part with centre bore is equipped on the downside of the rotor, the center thorn stick is exposed across centre bore
Outside, guide post is equipped on the upside of the rotor base, the rotor is equipped with guide pillar hole, and the guide post of the rotor base is set to guide post
In hole to the rotor base can relative rotor move up and down, a driving rotor base uplink is additionally provided on the guide post
Reset spring；It is equipped with one piece of lower andante between the rotor base and rotor, perforation is offered on the lower andante, the perforation is straight
Diameter is less than rotor base, and the lower andante, which connects lower andante driving cylinder, can push lower andante downlink, thus under the lower andante
Row drives rotor base downlink；Cutter block is connected on the rotor, the cutter block passes through perforation cutter and is located at center thorn stick
Bian Shang；The lower andante driving cylinder is equipped with the position sensor of measurement cylinder piston end position.The unilateral bearing is selected
Rotate forward locking type.
There are two position sensor in lower andante driving cylinder is set, one is located at topmost in piston end, and one in work
Plug end is located at bottom.
It is to have checked whether plastic sheet takes out from workpiece to hang over central spine that lower andante driving cylinder, which has a purposes,
On bar and the plastic sheet material returned, check system are that weak pressure gas injects lower andante driving cylinder downlink judgement to push lower row block
And rotor base downlink, since pressure is limited, when hanging with plastic sheet in the thorn stick of center, rotor base can stop, and setting exists
Piston end the lowermost position sensor will not receive signal, can judge that this plastic sheet has been taken out, if not taking out
It then can stopping alarm.
A kind of cutter block installs mode, has gap slot in the rotor base, cutter block lower end and cutter are located at
In gap slot.
A kind of movable table driving device set-up mode, the movable table driving device include the spiral shell being arranged in stand
Bar driving motor, the screw drive motor movable end are connected on the screw rod that one is vertically arranged；It is equipped on front side of the stand
Movable table sliding rail, the movable table are slidably installed on movable table sliding rail and are equipped with a drive rod, the drive on rear side of the movable table
Lever is equipped with a swivel nut and is set on screw rod.
Further, the guide post in the rotor base and guide pillar hole are equipped with 4 and are arranged around center thorn stick；The guide post
Major diameter portion is equipped with above hole, the guide post upper end is equipped with major part, and the diameter of major part is greater than the diameter of guide pillar hole, the reset bullet
Spring is located at major diameter portion and both ends are pressed respectively against on major part and the lower end shoulder of major diameter portion.
Stability is improved in order to smoothly take plastic sheet out of, center thorn stick lower end is equipped with a spindle head.Spindle
Head can increase the bond strength of plastic sheet Yu center thorn stick.
A kind of unilateral bearing installs mode, and the unilateral bearing sets there are two and is located at rotor upper and lower sides.
The present invention when in use first movable table driving device drive movable table downlink, center thorn stick protrude into plastic part to
At lower opening, cutter is contacted on plastic parts, and then motor rotates forward band moving mandrel and rotates forward, and unilateral bearing rotates forward locking, and rotor is driven to turn
Dynamic, rotor drives cutter rotation cutting plastic piece to complete punching, and movable table driving device drives movable table uplink, center thorn stick band
Plastic sheet out, lower andante driving cylinder input low pressure gas push lower andante and rotor base for having checked whether that plastic sheet is hung over
In the thorn stick of center, andante driving cylinder input high pressure gas is then played to push lower andante and rotor base downlink, while clicking driving
Mandrel reversion completes a circulation so that plastic sheet is pulled up from the thorn stick of center.
The beneficial effects of the present invention are: 1., which can be conveniently accomplished the macropore of beating of plastic sheet on plastic part, works, punching
Speed is fast, can flexibly be used for various automatic production lines.2. rotor and mandrel, there are also lower andante, lower andantes to drive cylinder
Design, can easily remove the plastic sheet in true center thorn stick, plastic sheet is prevented to be accumulated in the thorn stick of center.3. downlink
Plate drive cylinder on have warning function, when the plastic sheet that cutter is cut takes out from workpiece to be stayed on workpiece, understand into
Row reports an error, and reduces defect rate.
Detailed description of the invention
Fig. 1 is the schematic diagram of one embodiment of the invention.
Fig. 2 is the schematic cross-sectional view of one embodiment of the invention.
Fig. 3, Fig. 4, Fig. 5 are the schematic cross-sectional views in the guide rod direction of movable table part.Wherein Fig. 4 is short stroke low-voltage driving
Line position under cylinder error detection, Fig. 5 are lower plastic sheet positions.
Specific embodiment
The present invention will be described in further detail below with reference to the embodiments of the drawings.
Embodiment 1
In conjunction with attached drawing 1 to 5, a kind of plastic part borehole drill construction of band detection, including stand 1 and be set to 1 front end of stand can uplink and downlink
Movable table 2, the movable table 2 driven uplink and downlink by movable table driving device 3；The movable table 2 is equipped with an electricity
Machine 4,4 lower side output terminal of motor are equipped with mandrel 5, and center thorn stick 6 is equipped on the downside of the mandrel 5, is arranged with outside the mandrel 5
Rotor 7 is equipped with unilateral bearing 8 and contacts load to which rotor 7 is rotatably arranged on mandrel 5 between the rotor 7 and mandrel 5
On；A rotor base 9 of the middle part with centre bore is equipped on the downside of the rotor 7, the center thorn stick 6 passes through centre bore and exposes
Outside, guide post 10 is equipped on the upside of the rotor base 9, the rotor 7 is equipped with guide pillar hole 11, the guide post 10 of the rotor base 9
In guide pillar hole 11 to the rotor base 9 can relative rotor 7 move up and down, be additionally provided with a driving on the guide post 10
The reset spring 12 of 9 uplink of rotor base；One piece of lower andante 13, the lower andante 13 are equipped between the rotor base 9 and rotor 7
On offer perforation 14,14 diameters of the perforation are less than rotor base 9, and the lower andante 13 connects lower andante 13 and drives cylinder 15
Lower 13 downlink of andante can be pushed, so that 13 downlink of lower andante drives 9 downlink of rotor base；It is connected with and cuts on the rotor 7
Cutter block 16, the cutter block 16 pass through 14 cutters 17 of perforation and are located on 6 side of center thorn stick；The lower andante driving cylinder is equipped with
Measure the position sensor of cylinder piston end position.The unilateral bearing 8, which is selected, rotates forward locking type.
There are two position sensor in lower andante driving cylinder is set, one is located at topmost in piston end, and one in work
Plug end is located at bottom.
It is to have checked whether plastic sheet takes out from workpiece to hang over central spine that lower andante driving cylinder, which has a purposes,
On bar and the plastic sheet material returned, check system are that weak pressure gas injects lower andante driving cylinder downlink judgement to push lower row block
And 9 downlink of rotor base, since pressure is limited, when hanging with plastic sheet in center thorn stick 6, rotor base 9 can stop, setting
Signal will not be received in piston end the lowermost position sensor, can judge that this plastic sheet has been taken out, if not taking
It out then can stopping alarm.
A kind of cutter block 16 installs mode, has gap slot 18 in the rotor base 9,16 lower end of cutter block and cuts
Knife 17 is located in gap slot 18.
A kind of 3 set-up mode of movable table driving device, the movable table driving device 3 include one and are arranged in stand 1
Screw drive motor 21,21 movable end of screw drive motor is connected on the screw rod being vertically arranged 22；It is described vertical
Movable table sliding rail 23 is equipped on front side of frame 1, the movable table 2 is slidably installed on movable table sliding rail 23 and is equipped on rear side of the movable table 2
One drive rod 24, the drive rod 24 are equipped with a swivel nut 25 and are set on screw rod 22.
Further, the guide post 10 in the rotor base 9 and guide pillar hole 11 are equipped with 4 and are arranged around center thorn stick 6；Institute
It states and is equipped with major diameter portion 26 above guide pillar hole 11,10 upper end of guide post is equipped with major part 27, and the diameter of major part 27 is greater than guide pillar hole
11 diameter, the reset spring 12 is located at major diameter portion and both ends are pressed respectively against the lower end shoulder of major part 27 and major diameter portion 26
On.
Stability is improved in order to smoothly take plastic sheet out of, 6 lower end of center thorn stick is equipped with a spindle head 28.It spins
Tup can increase the bond strength of plastic sheet Yu center thorn stick 6.
A kind of unilateral bearing 8 installs mode, and the unilateral bearing 8 sets there are two and is located at 7 upper and lower sides of rotor.
Movable table driving device 3 drives 2 downlink of movable table to the present invention first when in use, and center thorn stick 6 protrudes into plastic part
To lower opening at, cutter contact plastic parts on, then motor 4 rotate forward band moving mandrel 5 rotate forward, unilateral bearing 8 rotate forward locking, drive
Rotor 7 rotates, and rotor 7 drives cutter rotation cutting plastic piece to complete punching, and movable table driving device 3 drives 2 uplink of movable table,
Center thorn stick 6 takes plastic sheet out of, and lower andante driving cylinder 19 inputs low pressure gas and pushes lower andante 13 and rotor base 9 for examining
Whether there is plastic sheet to hang in center thorn stick 6, andante driving cylinder input high pressure gas is then played to push lower andante 13 and rotor floor
9 downlinks of seat, while clicking driving mandrel 5 and inverting, so that plastic sheet is pulled up from center thorn stick 6, complete a circulation.
The beneficial effects of the present invention are: 1., which can be conveniently accomplished the macropore of beating of plastic sheet on plastic part, works, punching
Speed is fast, can flexibly be used for various automatic production lines.2. rotor and mandrel, there are also lower andante, lower andantes to drive cylinder
Design, can easily remove the plastic sheet in true center thorn stick, plastic sheet is prevented to be accumulated in the thorn stick of center.3. downlink
Plate drive cylinder on have warning function, when the plastic sheet that cutter is cut takes out from workpiece to be stayed on workpiece, understand into
Row reports an error, and reduces defect rate.
Claims (6)
1. a kind of plastic part borehole drill construction of band detection, it is characterised in that: including stand and can uplink and downlink set on stand front end
Movable table, the movable table are driven uplink and downlink by a movable table driving device；The movable table is equipped with a motor, described
Motor lower side output terminal is equipped with mandrel, and center thorn stick is equipped on the downside of the mandrel, rotor, the rotor are arranged with outside the mandrel
Unilateral bearing contact load is equipped between mandrel to which rotor is rotatably arranged on mandrel；One is equipped on the downside of the rotor
Rotor base of a middle part with centre bore, the center thorn stick pass through centre bore and expose outside, be equipped on the upside of the rotor base
Guide post, the rotor are equipped with guide pillar hole, and the guide post of the rotor base is set in guide pillar hole to which the rotor base can phase
It moves up and down to rotor, the reset spring of a driving rotor base uplink is additionally provided on the guide post；The rotor base with
It is equipped with one piece of lower andante between rotor, perforation is offered on the lower andante, the penetration hole diameter is less than rotor base, the downlink
Plate, which connects lower andante driving cylinder, can push lower andante downlink, so that the lower andante downlink drives rotor base downlink；It is described
Cutter block is connected on rotor, the cutter block passes through perforation cutter and is located on the thorn stick side of center；The lower andante drives cylinder
It is equipped with the position sensor of measurement cylinder piston end position.
2. the plastic part borehole drill construction of band detection according to claim 1, it is characterised in that: had in the rotor base
Gap slot, cutter block lower end and cutter are located in gap slot.
3. the plastic part borehole drill construction of band detection according to claim 1, it is characterised in that: the movable table driving device
The screw drive motor being arranged in stand including one, the screw drive motor movable end are connected to one and are vertically arranged
On screw rod；Movable table sliding rail is equipped on front side of the stand, the movable table is slidably installed on movable table sliding rail and after the movable table
Side is equipped with a drive rod, and the drive rod is equipped with a swivel nut and is set on screw rod.
4. the plastic part borehole drill construction of band detection according to claim 1, it is characterised in that: leading in the rotor base
Column and guide pillar hole are equipped with 4 and are arranged around center thorn stick；Major diameter portion is equipped with above the guide pillar hole, the guide post upper end is set
There is major part, the diameter of major part is greater than the diameter of guide pillar hole, and the reset spring is located at major diameter portion and both ends are pressed respectively against major part
On the lower end shoulder of major diameter portion.
5. the plastic part borehole drill construction of band detection according to claim 1, it is characterised in that: center thorn stick lower end is set
There is a spindle head.
6. the plastic part borehole drill construction of band detection according to claim 1, it is characterised in that: the unilateral bearing is equipped with two
It is a and be located at rotor upper and lower sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810897329.0A CN109109260B (en) | 2018-08-08 | 2018-08-08 | Plastic part drilling mechanism with detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810897329.0A CN109109260B (en) | 2018-08-08 | 2018-08-08 | Plastic part drilling mechanism with detection function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109109260A true CN109109260A (en) | 2019-01-01 |
| CN109109260B CN109109260B (en) | 2024-01-09 |
Family
ID=64852110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810897329.0A Active CN109109260B (en) | 2018-08-08 | 2018-08-08 | Plastic part drilling mechanism with detection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109109260B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5038651A (en) * | 1990-03-29 | 1991-08-13 | Burdick Brett W | Device for cutting shaped holes |
| CN103586928A (en) * | 2013-11-25 | 2014-02-19 | 必诺机械（东莞）有限公司 | Punching equipment for preventing waste from remaining and using method thereof |
| CN204505359U (en) * | 2015-03-04 | 2015-07-29 | 亚普汽车部件股份有限公司 | The positional punch device of plastic fuel tank bonding machine |
| KR101611875B1 (en) * | 2015-01-15 | 2016-04-14 | 주식회사 서연이화 | hole punching device |
| CN206982855U (en) * | 2017-06-19 | 2018-02-09 | 深圳市友通塑焊机械有限公司 | Punch device |
| CN208841687U (en) * | 2018-08-08 | 2019-05-10 | 宁波均创智能科技有限公司 | A kind of plastic part borehole drill construction of band detection |
-
2018
- 2018-08-08 CN CN201810897329.0A patent/CN109109260B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5038651A (en) * | 1990-03-29 | 1991-08-13 | Burdick Brett W | Device for cutting shaped holes |
| CN103586928A (en) * | 2013-11-25 | 2014-02-19 | 必诺机械（东莞）有限公司 | Punching equipment for preventing waste from remaining and using method thereof |
| KR101611875B1 (en) * | 2015-01-15 | 2016-04-14 | 주식회사 서연이화 | hole punching device |
| CN204505359U (en) * | 2015-03-04 | 2015-07-29 | 亚普汽车部件股份有限公司 | The positional punch device of plastic fuel tank bonding machine |
| CN206982855U (en) * | 2017-06-19 | 2018-02-09 | 深圳市友通塑焊机械有限公司 | Punch device |
| CN208841687U (en) * | 2018-08-08 | 2019-05-10 | 宁波均创智能科技有限公司 | A kind of plastic part borehole drill construction of band detection |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109109260B (en) | 2024-01-09 |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information |
Inventor after: He Hongxiang Inventor before: He Hongfeng |
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| GR01 | Patent grant |