CN213164887U - Grinding machine cooling device for mechanical numerical control machining - Google Patents
Grinding machine cooling device for mechanical numerical control machining Download PDFInfo
- Publication number
- CN213164887U CN213164887U CN202021598580.6U CN202021598580U CN213164887U CN 213164887 U CN213164887 U CN 213164887U CN 202021598580 U CN202021598580 U CN 202021598580U CN 213164887 U CN213164887 U CN 213164887U
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- fixed cylinder
- liquid
- hole
- communicated
- liquid outlet
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- 238000001816 cooling Methods 0.000 title claims abstract description 23
- 238000003754 machining Methods 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 83
- 239000007921 spray Substances 0.000 claims abstract description 16
- 238000001914 filtration Methods 0.000 claims abstract description 5
- 238000005507 spraying Methods 0.000 claims abstract description 5
- 238000003860 storage Methods 0.000 claims description 14
- 230000017525 heat dissipation Effects 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 43
- 229910052742 iron Inorganic materials 0.000 abstract description 19
- 241000251468 Actinopterygii Species 0.000 abstract description 3
- 239000000110 cooling liquid Substances 0.000 description 33
- 239000002826 coolant Substances 0.000 description 12
- 239000007787 solid Substances 0.000 description 6
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 5
- 235000017491 Bambusa tulda Nutrition 0.000 description 5
- 241001330002 Bambuseae Species 0.000 description 5
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 5
- 239000011425 bamboo Substances 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 229910001651 emery Inorganic materials 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910001369 Brass Inorganic materials 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
Abstract
The utility model relates to the technical field of grinding machine cooling, and discloses a grinding machine cooling device for mechanical numerical control machining, which comprises a filtering component, a magnetic suction component and a spraying component, wherein the filtering component comprises a first fixed cylinder and a filter bag, the first fixed cylinder is provided with a first liquid outlet, and the bottom of the filter bag is internally arranged in the first fixed cylinder; the magnetic suction assembly comprises a second fixed cylinder, an end cover and a magnetic block, wherein a fixed hole is formed in the top of the second fixed cylinder, a second liquid outlet is formed in the bottom of the second fixed cylinder, the end cover is arranged opposite to the fixed hole and is detachably connected to the second fixed cylinder, an annular cavity is formed in the end cover and is communicated with the first liquid outlet, a plurality of third liquid outlets are formed in the inner wall of the bottom of the annular cavity, and the magnetic block is arranged in the second fixed cylinder and is opposite to the third liquid outlets; the spraying component comprises a spray head and a circulating pump, wherein the liquid inlet end of the circulating pump is communicated with the second liquid outlet, and the liquid outlet end of the circulating pump is communicated with the liquid inlet end of the spray head. The utility model discloses can effectively avoid shower nozzle and circulating pump by iron fillings fish tail.
Description
Technical Field
The utility model relates to a grinding machine cooling technology field, concretely relates to grinding machine cooling device for mechanical numerical control processing.
Background
In-process of grinding machine work, the emery wheel is polished the part, the emery wheel can form high temperature with the contact point of part, cool down emery wheel and part through shower nozzle blowout coolant liquid, the shower nozzle is washed away heat and the iron fillings that will polish the production when contacting with emery wheel and part, the coolant liquid assembles the coolant liquid export of grinding machine, coolant liquid export flow to the pump in from the grinding machine after simply filtering through the filter screen, send into the shower nozzle under the effect of pump, there is the defect in the grinding machine of this kind of numerical control processing, the coolant liquid that contains the iron fillings only filters through the filter screen is simple, some sizes have flowed through the filter screen a little relatively in addition, this part iron fillings can the fish tail pump, pipeline and shower nozzle, influence the life-span of these devices.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide a grinding machine cooling device for mechanical numerical control processing, only filter the cutting fluid through the filter screen among the solution prior art and lead to filtering incomplete technical problem.
In order to achieve the above technical purpose, the technical solution of the utility model provides a grinding machine cooling device for machining numerical control processing, a serial communication port, include:
the filter assembly comprises a first fixed cylinder and a filter bag, the first fixed cylinder is hollow inside and is provided with an opening at the top, the bottom of the first fixed cylinder is provided with a first liquid outlet, the bottom of the filter bag is arranged in the first fixed cylinder, and a bag opening of the filter bag is clamped at the opening end of the first fixed cylinder;
the magnetic suction assembly comprises a second fixed cylinder, an end cover and a magnetic block, wherein the second fixed cylinder is hollow, the top of the second fixed cylinder is provided with a fixed hole, the bottom of the second fixed cylinder is provided with a second liquid outlet, the end cover is arranged opposite to the fixed hole and is detachably connected to the second fixed cylinder, an annular cavity is formed in the end cover, the annular cavity is coaxially arranged with the second fixed cylinder and is communicated with the first liquid outlet, the inner wall of the bottom of the annular cavity is provided with a plurality of third liquid outlets, the plurality of third liquid outlets are uniformly distributed along the circumferential direction of the annular cavity, the third liquid outlets are communicated with the second fixed cylinder, and the magnetic block is arranged in the second fixed cylinder and is arranged opposite to the third liquid outlets;
the spraying assembly comprises a spray head and a circulating pump, wherein the liquid inlet end of the circulating pump is communicated with the second liquid outlet, and the liquid outlet end of the circulating pump is communicated with the liquid inlet end of the spray head.
Compared with the prior art, the beneficial effects of the utility model include: when the spray head is contacted with the grinding wheel and parts, heat and scrap iron generated by grinding are washed away, cooling liquid is gathered to a cooling liquid outlet of the grinding machine, the cooling liquid flows into the filter bag from the cooling liquid outlet of the grinding machine, most scrap iron in the mixed liquid is intercepted in the filter bag under the action of the filter bag, the cooling liquid filtered by the filter bag flows into the annular cavity in sequence through the first liquid outlet of the first fixed cylinder, the cooling liquid flows out from each third liquid outlet after flowing out from the annular cavity, the cooling liquid flowing out from the third liquid outlets all falls on the magnetic block, iron powder or scrap iron with smaller diameter mixed in the cooling liquid is adsorbed on the magnetic block, a large strand of cooling liquid is divided into a plurality of thin flows through the annular cavity and the plurality of third liquid outlets, the contact between the cooling liquid and the magnetic block is increased, the scrap iron possibly remained in the cooling liquid can be removed, and the cooling liquid enters the circulating pump through the second liquid outlet of the second fixed cylinder, the circulating pump pumps the cooling liquid into the spray head, so that the cooling liquid can be recycled, and the iron chips can be prevented from damaging the circulating pump and the spray head.
Drawings
Fig. 1 is a three-dimensional schematic view of the present invention;
fig. 2 is a schematic structural diagram of the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is an enlarged partial schematic view at B of FIG. 3;
FIG. 5 is an enlarged partial schematic view at C of FIG. 3;
FIG. 6 is an enlarged partial schematic view at D of FIG. 3;
fig. 7 is a partially enlarged schematic view at E in fig. 3.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The utility model provides a grinding machine cooling device for mechanical numerical control processing, as shown in fig. 1 to 7, including filter assembly 1, magnetism subassembly 2 and spray set 3 of inhaling, filter assembly 1 includes first solid fixed cylinder 11 and filter bag 12, and first solid fixed cylinder 11's inside is hollow and open-top, and first liquid outlet has been seted up to first solid fixed cylinder 11's bottom, places first solid fixed cylinder 11 in the bottom of filter bag 12 in, and the open end of first solid fixed cylinder 11 is located to the sack card of filter bag 12.
Specifically, the filter assembly 1 further includes a magnetic ring 13 and a communicating tube 14, the magnetic ring 13 is a permanent magnet, the magnetic ring 13 is coaxially disposed with the open end of the first fixed cylinder 11, the magnetic ring 13 abuts against the open end of the filter bag 12 and is magnetically adsorbed on the first fixed cylinder 11, one end of the communicating tube 14 is communicated with the coolant outlet of the grinding machine, and the other end of the communicating tube is inserted into the bag mouth of the filter bag 12.
Through setting up magnetic ring 13, when the iron fillings in the filter bag 12 accumulated a certain amount, take off magnetic ring 13, directly take out filter bag 12 from first fixed cylinder 11, more renew filter bag 12, then with magnetic ring 13 butt in the open end of filter bag 12 and with first fixed cylinder 11 magnetic force link, avoid the sack of filter bag 12 to slide into in first fixed cylinder 11.
Specifically, the filter assembly 1 further comprises a supporting plate 15, the first fixing cylinder 11 is arranged in the supporting plate 15, the supporting plate 15 is arranged below the filter bag 12 and above the first liquid outlet, the supporting plate 15 is abutted to the bottom of the filter bag 12 and provided with a plurality of fourth liquid outlets along the axial direction of the first fixing cylinder 11, and the fourth liquid outlets are communicated with the first liquid outlet.
Through setting up backup pad 15, can support the bottom of filter bag 12, avoid the gravity that accumulational iron fillings produced to act on the bottom of filter bag 12, avoid filter bag 12 to be lacerated by iron fillings.
Magnetic suction assembly 2 includes the fixed section of thick bamboo 21 of second, end cover 22 and magnetic path 23, the fixed orifices has been seted up at the inside hollow and top of the fixed section of thick bamboo 21 of second, the second liquid outlet has been seted up to the bottom, the relative fixed orifices of end cover 22 sets up and can dismantle and connect in the fixed section of thick bamboo 21 of second, an annular cavity has been seted up in the end cover 22, annular cavity and the coaxial setting of the fixed section of thick bamboo 21 of second and be linked together with first liquid outlet, a plurality of third liquid outlets have been seted up to annular cavity's bottom inner wall, the circumference evenly distributed of annular cavity is followed to a plurality of third liquid outlets, the third liquid outlet.
Specifically, the fixed orifices include first through-hole and the second through-hole of coaxial setting, and first through-hole is the toper, and first through-hole is along the direction internal diameter that is close to the bottom of the solid fixed cylinder 21 of second constantly reducing, and the second through-hole is cylindrically, and end cover 22's one end is cylindrically, the other end is the toper, and end cover 22's one end cooperation and slidable insert locate second through-hole, the cooperation of the other end and slidable insert and locate first through-hole.
After the end cover 22 is removed, when the end cover 22 is inserted into the first through hole and the second through hole, the end cover 22 can be inserted into the second through hole along the direction of the first through hole because the first through hole is tapered, so that the end cover 22 can be smoothly inserted into the second through hole.
Specifically, the outer wall of the end cover 22 is provided with a first liquid inlet communicated with the annular cavity, the magnetic attraction component 2 further comprises a connecting piece 24, the connecting piece 24 comprises a first hose 241, a second hose 242 and a nut 243, one end of the first hose 241 is communicated with the first liquid outlet, an external thread is axially arranged on the outer wall of the other end, one end of the second hose 242 is communicated with the first liquid inlet, one end of the nut 243 is connected to the other end of the second hose 242, and the other end of the nut 243 is in threaded connection with the other end of the first hose 241.
The magnet 23 is disposed in the second fixed cylinder 21 and opposite to the third liquid outlet.
Specifically, the magnetic attraction component 2 further comprises a connecting rod 25, one end of the connecting rod 25 is connected to the end cover 22, and the other end of the connecting rod 25 is connected to the magnetic block 23.
Through setting up connecting rod 25, when taking out end cover 22, end cover 22 takes out magnetic path 23 through connecting rod 25, avoids the staff contact magnetic path 23, avoids iron fillings fish tail staff.
Specifically, the magnetic block 23 is a permanent magnetic rotator, one end of the magnetic block 23 close to the inner wall of the bottom of the second fixing cylinder 21 is cylindrical, the other end of the magnetic block 23 is conical, the outer diameter of the other end of the magnetic block 23 is continuously reduced along the direction far away from the bottom of the second fixing cylinder 21, the magnetic attraction assembly 2 further comprises a fixing plate 26, the fixing plate 26 is provided with a third through hole and a fourth through hole which are communicated along the axial direction of the second fixing cylinder 21, the third through hole is conical, the inner diameter of the third through hole is continuously reduced along the direction close to the bottom of the second fixing cylinder 21, the fourth through hole is a cylindrical hole, the fixing plate 26 is sleeved at one end of the magnetic block 23 through the fourth through hole, the fixing plate 26 is sleeved at the other end of the magnetic block 23 through the third through hole, a channel for liquid to flow through is arranged between the third through hole and the outer wall of the magnetic block 23, the fixing plate 26 is hermetically, preferably, the material of the fixing plate 26 may be glass, resin, aluminum alloy, aluminum, copper, or the like, and specifically, the material of the fixing plate 26 is brass, but the material of the fixing plate 26 is not limited thereto.
Be conical third through-hole and be columniform fourth through-hole through the setting, when coolant liquid flows the third through-hole, iron fillings are adsorbed by the outer wall of magnetic path 23, be conical third through-hole and be the other end of conical magnetic path 23 through the setting, make and to hold more iron powder between the outer wall of third through-hole and magnetic path 23, avoid the clearance between third through-hole and the magnetic path 23 to be blockked up at the excessive speed, and because the direction internal diameter of third through-hole to the bottom that is close to the fixed section of thick bamboo 21 of second constantly reduces, the reduction that supplies coolant liquid to flow through is more and less, make the action that magnetic path 23 can be better act on the coolant liquid, take out most iron fillings in the coolant liquid under the effect of magnetic path 23.
Preferably, a third through hole is opened on one side of the fixing plate 26 close to the inner circumferential surface of the second fixing cylinder 21 along the axial direction.
Through setting up the third through-hole, forget the clearance when the magnetic path 23 leads to the runner between fixed plate 26 and the magnetic path 23 to be blockked up by the iron powder for a long time, the water level of fixed plate 26 top is stretchd, through setting up the third through-hole for the coolant liquid that upwards stretchs flows through fixed plate 26 from the third through-hole, avoids the coolant liquid to outwards spill over from the top of the fixed cylinder 21 of second.
Specifically, the magnetic attraction assembly 2 further includes a pull rod 27, and the pull rod 27 is coaxially connected to an end of the end cover 22 far away from the second fixing cylinder 21.
The spraying component 3 comprises a spray head 31 and a circulating pump 32, wherein the liquid inlet end of the circulating pump 32 is communicated with the second liquid outlet, and the liquid outlet end of the circulating pump is communicated with the liquid inlet end of the spray head 31.
Specifically, a grinding machine cooling device for machining numerical control still includes cooling module 4, and cooling module 4 includes storage tank 41, a plurality of heat fin 42 and radiator fan 43, and second inlet and fifth liquid outlet have been seted up to storage tank 41, and the second inlet is linked together with the second liquid outlet, and the fifth liquid outlet communicates with the end of advancing of circulating pump 32 night, and heat fin 42 sets up in storage tank 41's outer wall and connects in storage tank 41, and radiator fan 43 sets up heat fin 42 relatively.
Specifically, the plurality of heat dissipation fins 42 are uniformly distributed at the bottom of the storage box 41, and the heat dissipation fan 43 is disposed below the storage box 41.
The utility model discloses a concrete work flow: during the operation of the grinding machine, the grinding wheel polishes the part, the contact point of the grinding wheel and the part can form high temperature, cooling liquid is sprayed out through the spray head 31 to cool the grinding wheel and the part, heat and scrap iron generated by polishing are washed away when the spray head 31 contacts the grinding wheel and the part, the cooling liquid is gathered to a cooling liquid outlet of the grinding machine, flows into the communicating pipe 14 from the cooling liquid outlet of the grinding machine and flows into the filter bag 12 through the communicating pipe 14, most scrap iron in the mixed liquid is intercepted in the filter bag 12 under the action of the filter bag 12, the cooling liquid filtered by the filter bag 12 flows through the support plate 15 from the fourth liquid outlet and sequentially flows through the first hose 241 and the second hose 242 from the first liquid outlet of the first fixed cylinder 11, the cooling liquid flows into the annular cavity through the second hose 242, the cooling liquid flows out from each third liquid outlet after flowing out from the annular cavity, the cooling liquid flowing out from the third liquid outlet falls on the magnetic block 23, iron powder or scrap iron with small diameter mixed in cooling liquid is adsorbed on the magnetic block 23, the cooling liquid flows through the magnetic block 23 and flows through the third through hole and the fourth through hole, when the cooling liquid flows through the third through hole and the fourth through hole, the cooling liquid contacts with the magnetic block 23 again, because the cooling liquid normally flows downwards and must pass through the third through hole and the fourth through hole, when the cooling liquid flows through a gap between the third through hole and the fourth through hole and the outer wall of the magnetic block 23, the scrap iron possibly remaining in the cooling liquid can be removed, the cooling liquid flowing through the fourth through hole enters the storage tank 41 through the second liquid outlet of the second fixed cylinder 21, the heat of the cooling liquid is transferred to the storage tank 41, the storage tank 41 transfers the heat to the fan heat fins 42, under the action of the fan, the heat is blown away through air, the cooling liquid is cooled, the circulating pump 32 pumps the cooling liquid in the storage tank 41 into the spray head 31, and the recycling of, and can avoid the damage of iron filings to the circulating pump 32 and the spray head 31.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. A grinding machine cooling device for mechanical numerical control machining is characterized by comprising:
the filter assembly comprises a first fixed cylinder and a filter bag, the first fixed cylinder is hollow inside and is provided with an opening at the top, the bottom of the first fixed cylinder is provided with a first liquid outlet, the bottom of the filter bag is arranged in the first fixed cylinder, and a bag opening of the filter bag is clamped at the opening end of the first fixed cylinder;
the magnetic suction assembly comprises a second fixed cylinder, an end cover and a magnetic block, wherein the second fixed cylinder is hollow, the top of the second fixed cylinder is provided with a fixed hole, the bottom of the second fixed cylinder is provided with a second liquid outlet, the end cover is arranged opposite to the fixed hole and is detachably connected to the second fixed cylinder, an annular cavity is formed in the end cover, the annular cavity is coaxially arranged with the second fixed cylinder and is communicated with the first liquid outlet, the inner wall of the bottom of the annular cavity is provided with a plurality of third liquid outlets, the plurality of third liquid outlets are uniformly distributed along the circumferential direction of the annular cavity, the third liquid outlets are communicated with the second fixed cylinder, and the magnetic block is arranged in the second fixed cylinder and is arranged opposite to the third liquid outlets;
the spraying assembly comprises a spray head and a circulating pump, wherein the liquid inlet end of the circulating pump is communicated with the second liquid outlet, and the liquid outlet end of the circulating pump is communicated with the liquid inlet end of the spray head.
2. The cooling device for the grinding machine for the mechanical numerical control machining as claimed in claim 1, wherein the filtering assembly further comprises a supporting plate, the supporting plate is arranged in the second fixed cylinder, the supporting plate is arranged below the filter bag and above the first liquid outlet, the supporting plate abuts against the bottom of the filter bag and is provided with a plurality of fourth liquid outlets along the axial direction of the first fixed cylinder, and the fourth liquid outlets are communicated with the first liquid outlet.
3. The cooling device for the grinding machine for the mechanical numerical control machining according to claim 1, characterized in that the fixing hole comprises a first through hole and a second through hole which are coaxially arranged, the first through hole is conical, the inner diameter of the first through hole is continuously reduced along the direction close to the bottom of the second fixing cylinder, the second through hole is cylindrical, one end of the end cover is cylindrical, the other end of the end cover is conical, one end of the end cover is matched and slidably inserted in the second through hole, and the other end of the end cover is matched and slidably inserted in the first through hole.
4. A grinding machine cooling device for mechanical numerical control machining according to claim 3, characterized in that the magnetic attraction component further comprises a connecting rod, one end of the connecting rod is connected to the end cover, and the other end of the connecting rod is connected to the magnetic block.
5. The cooling device for the grinding machine for the mechanical numerical control machining according to claim 1 is characterized in that a first liquid inlet is formed in the outer wall of the end cover and communicated with the annular cavity, the magnetic suction assembly further comprises a connecting piece, the connecting piece comprises a first hose, a second hose and a nut, one end of the first hose is communicated with the first liquid outlet, an external thread is formed in the outer wall of the other end of the first hose in the axial direction, one end of the second hose is communicated with the first liquid inlet, one end of the nut is fixedly connected to the other end of the second hose, and the other end of the nut is in threaded connection with the other end of the first hose.
6. The cooling device for grinding machine for machining numerical control machining according to claim 1, characterized in that, the cooling device for grinding machine for machining numerical control machining further comprises a cooling assembly, the cooling assembly comprises a storage box, a plurality of heat dissipation fins and a cooling fan, the storage box is provided with a second inlet and a fifth outlet, the second inlet is communicated with the second outlet, the fifth outlet is communicated with the inlet end of the circulating pump, the heat dissipation fins are arranged on the outer wall of the storage box and connected to the storage box, and the cooling fan is arranged opposite to the heat dissipation fins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021598580.6U CN213164887U (en) | 2020-08-05 | 2020-08-05 | Grinding machine cooling device for mechanical numerical control machining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021598580.6U CN213164887U (en) | 2020-08-05 | 2020-08-05 | Grinding machine cooling device for mechanical numerical control machining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213164887U true CN213164887U (en) | 2021-05-11 |
Family
ID=75798901
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021598580.6U Expired - Fee Related CN213164887U (en) | 2020-08-05 | 2020-08-05 | Grinding machine cooling device for mechanical numerical control machining |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213164887U (en) |
-
2020
- 2020-08-05 CN CN202021598580.6U patent/CN213164887U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210511 |
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| CF01 | Termination of patent right due to non-payment of annual fee |