CN208449912U - Porcelain machine is selected in a kind of leak detection - Google Patents

Porcelain machine is selected in a kind of leak detection Download PDF

Info

Publication number
CN208449912U
CN208449912U CN201820838062.3U CN201820838062U CN208449912U CN 208449912 U CN208449912 U CN 208449912U CN 201820838062 U CN201820838062 U CN 201820838062U CN 208449912 U CN208449912 U CN 208449912U
Authority
CN
China
Prior art keywords
leak detection
conveyer
leak
sink
belt conveyor
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
Application number
CN201820838062.3U
Other languages
Chinese (zh)
Inventor
张金涵
李小阳
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujian Province Dehua Bolong Ceramics Co Ltd
Original Assignee
Fujian Province Dehua Bolong Ceramics Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujian Province Dehua Bolong Ceramics Co Ltd filed Critical Fujian Province Dehua Bolong Ceramics Co Ltd
Priority to CN201820838062.3U priority Critical patent/CN208449912U/en
Application granted granted Critical
Publication of CN208449912U publication Critical patent/CN208449912U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Examining Or Testing Airtightness (AREA)

Abstract

The utility model relates to ceramic production device fields, porcelain machine is selected more particularly to a kind of leak detection, it is described leak detection select porcelain machine include it is sequentially connected enter material conveyer, leak detection conveyer and outfeed belt conveyor, the lower section of leak detection conveyer front end is protruded into the end for entering material conveyer, enter to be formed between the end of material conveyer and the front end for conveyer of hunting leak and enters aquaporin for what ceramic vessel passed through, the lower section of leak detection conveyer rear end is protruded into the front end of outfeed belt conveyor, the exhalant canal passed through for ceramic vessel is formed between the front end of outfeed belt conveyor and the end for conveyer of hunting leak, conveyer lower section hunt leak equipped with leak detection sink, sink top of hunting leak is equipped with overflow port.It selects porcelain machine using the utility model leak detection and stops leakage in the roof and select porcelain method, worker need to only put product on entering material conveyer, it is pulled on outfeed belt conveyor and receives product, production efficiency is more manually hunted leak and is greatly improved, to quality of workers without big requirement, large labor intensity degree reduces, and inspection result is sufficiently reliable.

Description

Porcelain machine is selected in a kind of leak detection
Technical field
The utility model relates to ceramic production device fields, are specifically related to a kind of hunt leak and select porcelain machine.
Background technique
Ceramic vessel is as water container, and in process of production there may be flaw loophole, influence it makes as container Use function.And type one of of the exquisite tea set as ceramic vessel, several one are first engraved out on chinaware body using piercing skill and technique The exquisite eye of setting shape, fills and leads up eye with special small-size glaze, then draw with blue and white, high temperature firing after glazing, due to exquisite tea set Output is huge, and small-size glaze and idiosome fire and cooling procedure in since the coefficient of expansion is different, be easy to produce leak hole or split Seam, there are many defective products of exquisite ophthalmorrhea water, and traditional detection method is using artificial leak detecting, due to the exquisite thin quality of tea set wall Gently, in addition internal vessel space, qualified product can float on the water surface, the suspension of exquisite tea set is manually placed in sink Interior, leaky product can be sunk after for a period of time due to internal ponding automatically, and artificial leak detection requires that the quality of worker will be wanted Ask high, hand will be steadily put into when exquisite tea set is placed on the water surface, and inside cannot be splashed into water, otherwise influence testing result, labor Fatigue resistance is big, while production efficiency is not high.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of leak detections to select porcelain machine, and worker only need to be on entering material conveyer Product is put, is pulled on outfeed belt conveyor and receives product, production efficiency is more manually hunted leak and greatly improved, to quality of workers without big Requirement, large labor intensity degree reduces, and inspection result is sufficiently reliable.
In order to solve the above technical problems, the technical solution adopted in the utility model is as follows: porcelain machine, feature are selected in a kind of leak detection Be: including it is sequentially connected enter material conveyer, leak detection conveyer and outfeed belt conveyor, it is described enter material conveyer end protrude into It hunts leak the lower section of conveyer front end, enters and formed and passed through for ceramic vessel between the end of material conveyer and the front end for conveyer of hunting leak Enter aquaporin, the lower section of leak detection conveyer rear end, the front end of outfeed belt conveyor and inspection are protruded into the front end of the outfeed belt conveyor The exhalant canal for being formed between the end of conveyer and being passed through for ceramic vessel is leaked, leak detection water is equipped with below the leak detection conveyer Slot, the leak detection sink top are equipped with overflow port.
Preferably, it is described enter material conveyer include horizontal cloth section and lower oblique water entry section, the leak detection conveyer is from going to It afterwards successively include preceding oblique changeover portion, level transportation section and upper oblique changeover portion afterwards, the outfeed belt conveyor includes upper oblique water exit end With horizontal unloading part, before the second half section of the lower oblique water entry section is protruded into below upper oblique changeover portion, the first half of the upper oblique water exit end Section is after protruding into below upper oblique changeover portion.
Preferably, it is described enter aquaporin height be gradually reduced from front to back, the height of the exhalant canal is from front to back It is gradually increased.
Preferably, it is described enter material conveyer, leak detection conveyer and outfeed belt conveyor can separately adjustable height.
Preferably, further include overflow circulating slot, pass through overflow pipe and leak detection sink top inside the overflow circulating slot Overflow port connection, be equipped with water pump inside the overflow circulating slot, which is connected to by circulating line with leak detection sink inside.
Preferably, it is described enter material conveyer upper conveyor belt face at left and right sides of and outfeed belt conveyor upper conveyor belt face or so Two sides are equipped with baffle, are equipped with baffle at left and right sides of leak detection conveyer lower conveyer belt face.
Preferably, it is described enter material conveyer, leak detection conveyer and outfeed belt conveyor zone face on have non-slip texture.
Preferably, the width of the leak detection conveyer is narrower than leak detection sink, the top of sink of hunting leak with hunt leak conveyer it Between be equipped with fishing material mouth, it is described leak detection sink bottom toward fishing material mouth side it is oblique.
One kind, which is stopped leakage in the roof, selects porcelain method, selects porcelain machine to select leaky ceramic vessel using leak detection described in any of the above embodiments, Characterized by comprising the following steps:
Step 1: adjusting the opposite position into material conveyer, hunt leak conveyer and outfeed belt conveyor according to ceramic vessel height It sets, makes to match into the height of aquaporin and exhalant canal and ceramic vessel height;
Step 2: manually gathering on entering material conveyer puts ceramic vessel, opening up, the starting pan feeding of ceramic vessel Ceramic vessel is steadily sent into leak detection sink by conveyer by entering aquaporin;
Step 3: ceramic vessel floats in leak detection sink, and the top fitting leak detection conveyer belt of ceramic vessel, ceramic vessel It is steadily moved along under the drive of leak detection conveyer belt;
Step 4: internal gradually ponding simultaneously sinks during leaky ceramic vessel is mobile in sink of hunting leak, close The ceramic vessel of lattice is delivered on outfeed belt conveyor via exhalant canal, takes qualified ceramic vessel out of the water surface, and by artificial Pull receipts;
Step 5: leaky ceramic vessel is fished for out from leak detection bottom of gullet.
Preferably, in the step 3, the water for sink inner top of hunting leak flows into overflow circulating slot via overflow port, overflow Water pump in circulating slot send water-circulating pump to leak detection sink, is maintained at the water level hunted leak in sink on sustained height.
Seen from the above description, leak detection provided by the utility model, which selects porcelain machine and stops leakage in the roof, selects porcelain method, and worker need to only enter Ceramic vessel is put on material conveyer, pulls on outfeed belt conveyor and receives ceramic vessel, and ceramic vessel floats in leak detection sink Floating, the top fitting leak detection conveyer belt of ceramic vessel, ceramic vessel is steadily moved along under the drive of leak detection conveyer belt, there is leakage During the ceramic vessel in hole is mobile in sink of hunting leak, internal gradually ponding simultaneously sinks, and qualified ceramic vessel is via out Aquaporin is delivered on outfeed belt conveyor, takes qualified ceramic vessel out of the water surface, production efficiency, which is more manually hunted leak, improves ten times More than, to quality of workers without big requirement, large labor intensity degree is reduced, and inspection result is sufficiently reliable.
Detailed description of the invention
Fig. 1 is the side view that porcelain machine is selected in the utility model leak detection.
Fig. 2 is the local A enlarged diagram of Fig. 1.
Fig. 3 is the local B enlarged diagram of Fig. 1.
Fig. 4 is the left view that porcelain machine is selected in the utility model leak detection.
Fig. 5 is the bottom view of Fig. 1.
Specific embodiment
Below by way of specific embodiment, the utility model will be further described.
As shown in Figure 1, porcelain machine is selected in the leak detection of the utility model, including it is sequentially connected enter material conveyer 1, leak detection conveyer 2, outfeed belt conveyor 3 and mainframe 6, the type for entering material conveyer 1, leak detection conveyer 2 and outfeed belt conveyor 3 select belt Machine, and enter material conveyer 1, leak detection conveyer 2 and outfeed belt conveyor 3 and driven with speed regulating motor.
As shown in Fig. 2, the lower section of leak detection 2 front end of conveyer is protruded into the end for entering material conveyer 1, enter the end of material conveyer 1 It is formed between end and the front end of leak detection conveyer 2 and enters aquaporin 11 for what ceramic vessel passed through, as shown in figure 3, outfeed belt conveyor 3 Front end protrude into the lower section of leak detection 2 rear end of conveyer, formed between the front end of outfeed belt conveyor 3 and the end for conveyer 2 of hunting leak For the exhalant canal 31 that ceramic vessel passes through, it is equipped with leak detection sink 4 below conveyer 2 of hunting leak, is equipped with overflow at the top of sink 4 of hunting leak Mouthful, the liquid level in overflow port control leak detection sink 4, the minimum point of overflow port is liquid level.
As shown in Fig. 2, entering material conveyer 1 includes horizontal cloth section 12 and lower oblique water entry section 13, horizontal cloth section 12 is under The upper zone face angle of oblique water entry section 13 is 10-30 degree, and preferably 15 degree, leak detection conveyer 2 successively includes preceding oblique mistake from front to back It crosses section 21, level transportation section 22 and goes up oblique changeover portion 23 afterwards, as shown in figure 3, outfeed belt conveyor 3 includes upper oblique water exit end 32 and water The upper zone face angle of flat unloading part 33, upper oblique water exit end 32 and horizontal unloading part 33 is 10-30 degree, preferably 15 degree, lower oblique water entry Upper oblique 21 lower section of changeover portion before the second half section of section 13 is protruded into, the front half section of upper oblique water exit end 32 is after protruding under upper oblique changeover portion 23 Side.
The height height for entering aquaporin 11 is gradually reduced from feed end toward discharge end, enters water, exhalant canal 31 convenient for product Height be gradually increased from charging material end toward discharge end, be discharged convenient for product, the upper zone face of lower oblique water entry section 13 and preceding oblique mistake The angle crossed between 21 lower belt surface of section is 2-5 degree, between the upper zone face of upper oblique water exit end 32 and afterwards upper oblique 23 lower belt surface of changeover portion Angle be 2-5 degree.
Enter material conveyer 1, leak detection conveyer 2 and outfeed belt conveyor 3 and is equipped with height adjustment machine, it can separately adjustable height.
As shown in Fig. 2, the height adjustment mechanism for entering material conveyer 1 is the first guide post being fixed on into 1 bottom of material conveyer 14, leak detection is fixed on to select the first column sleeve 15 on the mainframe 6 of porcelain machine, be rotatably disposed in first into 1 bottom of material conveyer Screw rod 16 and the first nut 17 being fixedly arranged on mainframe 6,14 sliding sleeve of the first guide post are set in the first column sleeve 15, the first screw rod 16 and first nut 17 be threadedly coupled, 16 end of the first screw rod is installed with handwheel, and rotation hand wheel drives the rotation of the first screw rod 16, the One screw rod 16 adjusts the height into material conveyer 1 along longitudinal movement, since screw thread has self-locking function, stops operating After first screw rod 16, material conveyer 1 is able to maintain present level.
Fig. 4 is the left view that porcelain machine is selected in the utility model leak detection, and Fig. 4 is twice of ratio of Fig. 1, leak detection conveyer 2 Height adjustment mechanism be rotatably disposed in leak detection conveyer 2 end to end two the second screw rods 24 at the top of both ends, be fixedly arranged on host Two the second nuts 25 on frame 6, are fixed on the master that porcelain machine is selected in leak detection at the second guide post 26 for being fixed on 2 top of leak detection conveyer The second column sleeve 27 in rack 6,26 sliding sleeve of the second guide post are set in the second column sleeve 27, the second screw rod 24 and the second nut 25 1 One cooperation, 24 end of the second screw rod are installed with handwheel, and rotation hand wheel drives the rotation of the second screw rod 24, adjust leak detection conveyer 2 Highly.
As shown in figure 3, the height adjustment mechanism of outfeed belt conveyor 3 is the third guide post for being fixed on 3 bottom of outfeed belt conveyor 34, leak detection is fixed on to select third column sleeve 35 on the mainframe 6 of porcelain machine, be rotatably disposed in the third into 3 bottom of material conveyer Screw rod 36 and the third nut 37 being fixedly arranged on mainframe 6,34 sliding sleeve of third guide post are set in third column sleeve 35, third screw rod 36 and third nut 37 be threadedly coupled, 36 end of third screw rod is installed with handwheel, and rotation hand wheel drives third screw rod 36 to rotate, and adjusts Save the height of outfeed belt conveyor 3;
It further includes overflow circulating slot 5 that porcelain machine is selected in the leak detection of the utility model, inside overflow circulating slot 5 by overflow pipe with The overflow port at 4 top of leak detection sink is connected to, and water pump (not shown) is equipped with inside overflow circulating slot 5, which passes through circulating line It is connected to inside leak detection sink 4.
Enter at left and right sides of the upper conveyor belt face of material conveyer 1 and is all provided at left and right sides of the upper conveyor belt face of outfeed belt conveyor 3 There is baffle (not shown), baffle (not shown) also is provided at left and right sides of leak detection 2 lower conveyer belt face of conveyer, the effect of baffle is to use In limitation ceramic vessel left and right displacement, enter material conveyer 1, leak detection conveyer 2 and outfeed belt conveyor 3 zone face on have it is anti-skidding Lines, for increasing coefficient of friction.
The width of leak detection conveyer 2 is narrower than leak detection sink 4, sets between the top sidewall and leak detection conveyer 2 of sink 4 of hunting leak There is fishing material mouth, the bottom 41 for sink 4 of hunting leak is oblique toward fishing material mouth side.
The length of the level transportation section 22 of leak detection conveyer 2 is 2-3 meters, preceding oblique changeover portion 21 and afterwards upper oblique changeover portion 23 length is 1-1.5 meters, and bandwidth is 0.5-1 meters, is adjusted into material conveyer 1, leak detection conveyer 2 and outfeed belt conveyor 3 Conveying speed, the suspension time of adjustable ceramic vessel in water, the more long then accuracy in detection of suspension time is higher, general outstanding Floating time control is between 1-3 minutes.
One kind, which is stopped leakage in the roof, selects porcelain method, selects porcelain machine to carry out selecting porcelain using above-mentioned leak detection, comprising the following steps:
Step 1: adjusting the phase into material conveyer 1, hunt leak conveyer 2 and outfeed belt conveyor 3 according to ceramic vessel height To position, make to match into the height of aquaporin 11 and exhalant canal 31 and ceramic vessel height, specifically includes: adjustment leak detection The lower belt surface of the level transportation section 22 of conveyer 2 makes chaotropic height difference be equal to 1 to three/5ths points to the chaotropic height difference in liquid level face One of ceramic vessel height, this be in order to guarantee ceramic vessel insertion water in part can generate enough buoyancy, make to make pottery The top surface of porcelain container generates upper pressure to the lower belt surface of level transportation section 22, multiplies since frictional force is equal to pressure in coefficient of friction, Ensure that between ceramic vessel and lower belt surface has enough frictional force, and ceramic vessel is enable smoothly with belt-conveying, to adjust It is whole enter material conveyer 1 and outfeed belt conveyor 3 height, omit the height of the front end of the end and exhalant canal 31 into aquaporin 11 Greater than ceramic vessel height;
Step 2: manually gathering on entering material conveyer 1 puts ceramic vessel, ceramic vessel is arranged in arrays, and ceramics hold Device it is opening up, start into material conveyer 1, ceramic vessel be steadily sent into leak detection sink 4 by entering aquaporin 11;
Step 3: ceramic vessel floats in leak detection sink 4, the top fitting leak detection conveyer belt of ceramic vessel, ceramics hold Device is steadily moved along under the drive of leak detection conveyer belt, and the water for 4 inner top of sink of hunting leak flows into overflow circulating via overflow port In slot 5, the water pump in overflow circulating slot 5 send water-circulating pump to leak detection sink 4, is maintained at the water level hunted leak in sink 4 On sustained height;
Step 4: internal gradually ponding simultaneously sinks during leaky ceramic vessel is mobile in sink 4 of hunting leak, Qualified ceramic vessel is delivered on outfeed belt conveyor 3 via exhalant canal 31, takes qualified ceramic vessel out of the water surface, and by Manually pull receipts;
Step 5: leaky ceramic vessel is fished for out from leak detection 4 bottom of sink.
Enter to be equipped on material conveyer 1, leak detection conveyer 2 and outfeed belt conveyor 3 and start switch, enters when putting ceramic vessel Material conveyer 1 does not work, and is well placed after ceramic vessel by manually opening into material conveyer 1, and hunt leak conveyer 2 and discharging conveying Machine 3 mutually links, i.e., opens and simultaneously close off simultaneously, when the speed for manually pulling receipts does not catch up with the conveying speed of ceramic vessel, Pause leak detection conveyer 2 and outfeed belt conveyor 3.
Leak detection provided by the utility model, which selects porcelain machine and stops leakage in the roof, selects porcelain method, and worker need to only put on entering material conveyer 1 Ceramic vessel is pulled on outfeed belt conveyor 3 and receives ceramic vessel, and ceramic vessel floats in leak detection sink 4, ceramic vessel Top fitting leak detection conveyer belt, ceramic vessel are steadily moved along under the drive of leak detection conveyer belt, leaky ceramic vessel During mobile in sink 4 of hunting leak, internal gradually ponding simultaneously sinks, and qualified ceramic vessel is conveyed via exhalant canal 31 To outfeed belt conveyor 3, qualified ceramic vessel is taken out of the water surface, production efficiency, which is more manually hunted leak, improves ten times or more, to work People's quality is reduced without big requirement, large labor intensity degree, and inspection result is sufficiently reliable.
It above are only several specific embodiments of the utility model, but the design concept of the utility model is not limited to This, all non-essential modifications to the present invention made by this concept should belong to infringement scope of protection of the utility model Behavior.

Claims (8)

1. porcelain machine is selected in a kind of leak detection, it is characterised in that: including it is sequentially connected enter material conveyer, leak detection conveyer and discharging conveying Machine, it is described enter material conveyer end protrude into leak detection conveyer front end lower section, enter material conveyer end and leak detection conveyer Front end between formed and enter aquaporin for what ceramic vessel passed through, leak detection conveyer rear end is protruded into the front end of the outfeed belt conveyor Lower section, form the exhalant canal passed through for ceramic vessel, institute between the front end of outfeed belt conveyor and the end for conveyer of hunting leak It states and is equipped with leak detection sink below leak detection conveyer, the leak detection sink top is equipped with overflow port.
2. porcelain machine is selected in leak detection according to claim 1, it is characterised in that: it is described enter material conveyer include horizontal cloth section and Lower oblique water entry section, the leak detection conveyer successively include preceding oblique changeover portion, level transportation section and upper oblique transition afterwards from front to back Section, the outfeed belt conveyor include upper oblique water exit end and horizontal unloading part, and the second half section of the lower oblique water entry section is protruded into preceding oblique Below changeover portion, the front half section of the upper oblique water exit end is after protruding into below upper oblique changeover portion.
3. porcelain machine is selected in leak detection according to claim 1, it is characterised in that: it is described enter aquaporin height from front to back gradually Reduce, the height of the exhalant canal is gradually increased from front to back.
4. porcelain machine is selected in leak detection according to claim 1, it is characterised in that: it is described enter material conveyer, leak detection conveyer and go out Material conveyer can separately adjustable height.
5. porcelain machine is selected in leak detection according to claim 1, it is characterised in that: further include overflow circulating slot, the overflow circulating It is connected to by overflow pipe with the overflow port for sink top of hunting leak inside slot, water pump, the water is equipped with inside the overflow circulating slot Pump inside circulating line and leak detection sink by being connected to.
6. porcelain machine is selected in leak detection according to claim 1, it is characterised in that: it is described enter material conveyer upper conveyor belt face or so Baffle, leak detection conveyer lower conveyer belt face or so two are equipped at left and right sides of two sides and the upper conveyor belt face of outfeed belt conveyor Side is equipped with baffle.
7. porcelain machine is selected in leak detection according to claim 1, it is characterised in that: it is described enter material conveyer, leak detection conveyer and go out There is non-slip texture on the zone face of material conveyer.
8. porcelain machine is selected in leak detection according to claim 1, it is characterised in that: the width of the leak detection conveyer is than leak detection sink It is narrow, it is equipped with fishing material mouth between the top of sink of hunting leak and leak detection conveyer, the bottom of the leak detection sink is toward fishing out under material mouth side Tiltedly.
CN201820838062.3U 2018-05-31 2018-05-31 Porcelain machine is selected in a kind of leak detection Expired - Fee Related CN208449912U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201820838062.3U CN208449912U (en) 2018-05-31 2018-05-31 Porcelain machine is selected in a kind of leak detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201820838062.3U CN208449912U (en) 2018-05-31 2018-05-31 Porcelain machine is selected in a kind of leak detection

Publications (1)

Publication Number Publication Date
CN208449912U true CN208449912U (en) 2019-02-01

Family

ID=65150188

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201820838062.3U Expired - Fee Related CN208449912U (en) 2018-05-31 2018-05-31 Porcelain machine is selected in a kind of leak detection

Country Status (1)

Country Link
CN (1) CN208449912U (en)

Similar Documents

Publication Publication Date Title
CN104642417B (en) One mould molding waters the fried poached egg Fryer of oil formula continuously
CN106037460B (en) Nobody automatic noodles cooking machine
CN105210970B (en) The fish culture apparatus that a kind of water salinity can be automatically controlled and be adjusted
CN208449912U (en) Porcelain machine is selected in a kind of leak detection
CN108936378A (en) A kind of spiced and stewed food spicing device and method
CN203692171U (en) Automatic feeding device for poultry
CN207969531U (en) Pig farm feeding device
ES2547737T3 (en) Food processing machine
CN108745904A (en) A kind of leak detection selects porcelain machine and stops leakage in the roof and selects porcelain method
US10138011B2 (en) Filling device and method for filling a container with products floating and/or suspended in an aqueous liquid
KR102253636B1 (en) Food supply apparatus using screw supply method
CN114946682B (en) Intelligent pig feeding trough and using method thereof
FR2525862A1 (en) METHOD OF MYTILICULTURE AND INSTALLATION AND FLOATS FOR ITS IMPLEMENTATION
CN110226543A (en) A kind of scallop knocks cage assembly
CN104528006B (en) A kind of fermented bean curd tinning production line
CN211353800U (en) Automatic soaking system for food raw materials
CN208852742U (en) A kind of feed stuff agitating device of continuous uniform
CN208956732U (en) A kind of underwater bait-laying device for fish of cage culture
CN208987786U (en) A kind of garlic clove floats skin machine
CN208159814U (en) A kind of small-sized self-timing fish pond feed system
CN106424607A (en) Metal-stream inoculation adding device
CN205471712U (en) Automatic batcher
CN105249511B (en) Using method of marinating device with automatic feeding and automatic drying functions
CN206395003U (en) White mushroom cleans packing production line automatically
CN209527554U (en) Automatic charging device

Legal Events

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: 20190201

Termination date: 20210531

CF01 Termination of patent right due to non-payment of annual fee