CN107930908A - A kind of spray-painting plant for wheel hub processing - Google Patents

A kind of spray-painting plant for wheel hub processing Download PDF

Info

Publication number
CN107930908A
CN107930908A CN201711141075.1A CN201711141075A CN107930908A CN 107930908 A CN107930908 A CN 107930908A CN 201711141075 A CN201711141075 A CN 201711141075A CN 107930908 A CN107930908 A CN 107930908A
Authority
CN
China
Prior art keywords
wheel hub
electric pushrod
spray
base
motor
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.)
Pending
Application number
CN201711141075.1A
Other languages
Chinese (zh)
Inventor
沈静
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.)
Tianjin Kechuang Rejuvenation Technology Consulting Co Ltd
Original Assignee
Tianjin Kechuang Rejuvenation Technology Consulting 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 Tianjin Kechuang Rejuvenation Technology Consulting Co Ltd filed Critical Tianjin Kechuang Rejuvenation Technology Consulting Co Ltd
Priority to CN201711141075.1A priority Critical patent/CN107930908A/en
Publication of CN107930908A publication Critical patent/CN107930908A/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/0221Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts
    • B05B13/0228Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work characterised by the means for moving or conveying the objects or other work, e.g. conveyor belts the movement of the objects being rotative
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B13/00Machines or plants for applying liquids or other fluent materials to surfaces of objects or other work by spraying, not covered by groups B05B1/00 - B05B11/00
    • B05B13/02Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work
    • B05B13/04Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation
    • B05B13/0405Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work the spray heads being moved during spraying operation with reciprocating or oscillating spray heads
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05DPROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05D3/00Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
    • B05D3/04Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases
    • B05D3/0406Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by exposure to gases the gas being air
    • B05D3/0413Heating with air

Landscapes

  • Spray Control Apparatus (AREA)

Abstract

The invention discloses a kind of spray-painting plant for wheel hub processing, belong to wheel hub processing technique field, including base;Be respectively provided with left and right sides of the base upper surface has support column vertically, and support column is fixedly connected with base;The support top end is fixedly installed top plate, and top plate is horizontally set on support top end;Paint cylinder and headlamp are provided with the downside of the top plate;The hard water tube bottom end is provided with spray painting head, and pressure valve is additionally provided with hard water pipe;The headlamp is arranged at top plate bottom center line;The placement plate is horizontally disposed with, and placement plate upper end is provided with the first electric pushrod and strut;First electric pushrod is symmetricly set at left and right sides of placement plate top, and the first electric pushrod top is provided with the second motor;The second electric pushrod is provided with second motor, the second electric pushrod end is provided with snap ring;The present invention is reasonable in design, and can reach that workload is small, spray painting is quick, spray painting thoroughly effect.

Description

A kind of spray-painting plant for wheel hub processing
Technical field
The present invention relates to a kind of wheel hub processing technique field, is specifically a kind of spray-painting plant for wheel hub processing.
Background technology
Wheel hub is called wheel rim, steel ring, wheel or tire bell, is that the drum-shaped and center of wide support tire in tire is mounted in axis On metal parts.Wheel hub is various according to diameter, width, molding mode and material variety classes.The processing of wheel hub needs to use Plurality of devices, it is necessary to paint to wheel hub after wheel hub machines, can not only increase the aesthetic feeling of wheel hub, Er Qieke Corroded to avoid wheel hub, but existing general wheel hub processing spray-painting plant, work efficiency is than relatively low, and lacquer painting Dry is slow, has seriously affected enterprises production efficiency, is unfavorable for enterprise's production;It would therefore be desirable to a kind of wheel hub that is used for is processed Spray-painting plant.
The content of the invention
In view of the above shortcomings of the prior art, the technical problem to be solved in the present invention is to provide a kind of rational in infrastructure and use It is conveniently used for the spray-painting plant of wheel hub processing.
To achieve the above object, the present invention provides following technical solution:
A kind of spray-painting plant for wheel hub processing, including base;Be respectively provided with left and right sides of the base upper surface has branch vertically Dagger, support column are fixedly connected with base;The support top end is fixedly installed top plate, and top plate is horizontally set on support capital End;Paint cylinder and headlamp are provided with the downside of the top plate;The hard water tube bottom end is provided with spray painting head, is additionally provided with hard water pipe Pressure valve;The headlamp is arranged at top plate bottom center line;The placement plate is horizontally disposed with, and placement plate upper end is provided with One electric pushrod and strut;First electric pushrod is symmetricly set at left and right sides of placement plate top, the first electric pushrod top End is provided with the second motor;The second electric pushrod is provided with second motor, the second electric pushrod end is provided with snap ring; Placement plate top center symmetric setting has strut, and strut top is provided with electromagnet, and is placed with wheel hub at the top of electromagnet; The base bottom is provided with roller and fixing device;The base bottom is provided with roller by stent, is set on the outside of roller It is equipped with fixing device;The fixing device is made of rotating handles, fixed seat and threaded rod;The threaded rod and the spiral shell on base Pit is engaged;The rotating handles is fixedly connected on the top of threaded rod;The fixed seat is arranged on the bottom of threaded rod, and Weld together with threaded rod.
As the further scheme of the present invention:The paint cylinder is fixed at top plate bottom left, and paint cylinder lower right is set There is hard water pipe, and hard water pipe is connected with paint cylinder inner cavity.
As the further scheme of the present invention:Base upper surface centerline is provided with the first motor, the first motor Shaft top be provided with placement plate.
As the further scheme of the present invention:Air-heater is provided with the middle part of the support column medial surface, air-heater passes through gas Pipe is provided with gas tip, and gas tip is located above wheel hub.
As further scheme of the invention:The snap ring is arranged to semicircular structure, and snap ring and second electronic pushes away Bar end is fixedly connected.
Compared with prior art, the beneficial effects of the invention are as follows:
When the present invention paints for wheel hub, wheel hub is placed on electromagnet, control electromagnet is powered, and holds wheel hub, starts the first electricity Machine and then control pressure valve are opened, and the paint painted in cylinder is sprayed by hard water pipe by spray painting head, are painted for wheel hub;In spray painting head Swing under the turning effort with wheel hub, wheel hub is painted comprehensively;When the one side spray painting of well lid finishes, the first motor and pressure are closed Power valve, while control electromagnet to power off, control the second electric pushrod elongation, drives snap ring elongation, when snap ring blocks wheel hub, control The elongation of the first electric pushrod is made, drives the second motor to move up, and then drives the second electric pushrod to move up, so as to drive Snap ring moves up so that and wheel hub moves up, when wheel hub moves up to a certain extent, control the second motor rotation, band Dynamic second electric pushrod rotation, and then drive snap ring rotation, so as to drive wheel hub to rotate, when wheel hub rotates 180 °, control the Two motors stop rotating, while control the first electric pushrod to shrink, when the first electric pushrod is retracted to initial position, control the One electric pushrod stops shrinking, and the second electric pushrod of control is shunk, when the second electric pushrod is retracted to initial position, control the Two electric pushrods stop shrinking, while control electromagnet to be powered, and then repeatedly above step paints wheel hub.
Brief description of the drawings
Fig. 1 is the structure diagram for the spray-painting plant of wheel hub processing.
Fig. 2 is the structure diagram of snap ring in the spray-painting plant for wheel hub processing.
Fig. 3 is the structure diagram of fixing device in the spray-painting plant for wheel hub processing.
In figure:1- top plates, 2- paint cylinders, 3- hard water pipes, 4- headlamps, 5- pressure valve, 6- spray painting heads, 7- gas tips, 8- Air-heater, 9- support columns, 10- snap rings, the second electric pushrods of 11-, the second motors of 12-, the first electric pushrods of 13-, 14- are placed Plate, the first motors of 15-, 16- bases, 17- wheel hubs, 18- electromagnet, 19- struts, 20- rollers, 21- fixing devices, 22- rotations Handle, 23- fixed seats, 24- threaded rods, 25- stents.
Embodiment
The technical solution of this patent is described in more detail with reference to embodiment.
The embodiment of this patent is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end Same or similar label represents same or similar element or has the function of same or like element.Below with reference to attached The embodiment of figure description is exemplary, and is only used for explaining this patent, and it is not intended that limitation to this patent.
In the description of this patent, it is to be understood that term " " center ", " on ", " under ", "front", "rear", " left side ", The orientation or position relationship of the instruction such as " right side ", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are based on shown in the drawings Orientation or position relationship, are for only for ease of description this patent and simplify and describe, rather than instruction or imply signified device or Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limitation to this patent.
, it is necessary to illustrate in the description of this patent, unless otherwise clearly defined and limited, term " installation ", " phase Even ", " connection ", " setting " should be interpreted broadly, for example, it may be being fixedly linked, setting or be detachably connected, set Put, or be integrally connected, set.For the ordinary skill in the art, above-mentioned art can be understood as the case may be The concrete meaning of language in this patent.
Referring to Fig. 1, a kind of spray-painting plant for wheel hub processing is present embodiments provided, including base 16;The bottom Be respectively provided with left and right sides of 16 upper surfaces of seat has support column 9 vertically, and support column 9 is fixedly connected with base 16;9 top of support column Top plate 1 is fixedly installed, top plate 1 is horizontally set on 9 top of support column;The downside of top plate 1 is provided with paint cylinder 2 and headlamp 4; The paint cylinder 2 is fixed at 1 bottom left of top plate, and 2 lower right of paint cylinder is provided with hard water pipe 3, and in hard water pipe 3 and paint cylinder 2 Chamber connects;3 bottom of hard water pipe is provided with spray painting first 6, and pressure valve 5 is additionally provided with hard water pipe 3;The headlamp 4 is set At 1 bottom center line of top plate, headlamp 4 can provide illumination when construction environment light is bad;16 upper surface of base Centerline is provided with the first motor 15, and the shaft top of the first motor 15 is provided with placement plate 14;The placement plate 14 is horizontal Set, 14 upper end of placement plate is provided with the first electric pushrod 13 and strut 19;First electric pushrod 13, which is symmetricly set on, to be put Put at left and right sides of 14 top of plate, 13 top of the first electric pushrod is provided with the second motor 12;It is provided with second motor 12 Second electric pushrod 11,11 end of the second electric pushrod are provided with snap ring 10;The 14 top center symmetric setting of placement plate has Strut 19,19 top of strut is provided with electromagnet 18, and the top of electromagnet 18 is placed with wheel hub;In 9 medial surface of support column Portion is provided with air-heater 8, and air-heater 8 is provided with gas tip 7 by tracheae, and gas tip 7 is located above wheel hub, air-heater Wheel hub after 8 pairs of spray paintings is blowed so that paint is easier to air-dry;16 bottom of base is provided with roller 20 and fixed dress Put 21;When needing to paint for wheel hub, wheel hub is placed on electromagnet 18, control electromagnet 18 is powered, and holds wheel hub, starts the One motor 15 and then control pressure valve 5 are opened, and are painted the paint in cylinder 2 by hard water pipe 3 by first 6 ejection of painting, are painted for wheel hub; Under the swing of spray painting first 6 and the turning effort of wheel hub, wheel hub is painted comprehensively;When the one side spray painting of well lid finishes, close First motor 15 and pressure valve 5, while control electromagnet 18 to power off, the second electric pushrod 11 of control extends, and drives snap ring 10 to stretch Long, when snap ring 10 blocks wheel hub, the first electric pushrod 13 of control extends, and drives the second motor 12 to move up, and then drives Second electric pushrod 11 moves up, so as to drive snap ring 10 to move up so that wheel hub moves up, when wheel hub moves up When to a certain extent, the second motor 12 of control rotates, and drives the second electric pushrod 11 to rotate, and then drives snap ring 10 to rotate, from And drive wheel hub to rotate, when wheel hub rotates 180 °, the second motor 12 of control stops rotating, while controls the first electric pushrod 13 Shrink, when the first electric pushrod 13 is retracted to initial position, the first electric pushrod 13 of control stops shrinking, and control second is electronic Push rod 11 is shunk, and when the second electric pushrod 11 is retracted to initial position, the second electric pushrod 11 of control stops shrinking, same to time control Electromagnet 18 processed is powered, and then repeatedly above step paints wheel hub.
Referring to Fig. 2, in the present invention, the snap ring 10 is arranged to semicircular structure, and 10 and second electric pushrod of snap ring 11 ends are fixedly connected.
Referring to Fig. 3, in the present invention, 16 bottom of base is provided with roller 20, the outside of roller 20 by stent 25 It is provided with fixing device 21;The fixing device 21 is made of rotating handles 22, fixed seat 23 and threaded rod 24;The threaded rod 24 close with the corresponding threaded holes on base 16;The rotating handles 22 is fixedly connected on the top of threaded rod 24;The fixed seat 23 are arranged on the bottom of threaded rod 24, and weld together with threaded rod 24;Threaded rod 24 is driven by rotating rotating handles 22 Rotated, so as to drive fixed seat 23 to be declined, fixed seat 23 continues to rotate rotating handles 22 when dropping to bottom so that Fixed seat 23 props up the device, and roller 20 leaves ground, can not only so the device be fixed, can more cause roller 20 service life is longer.
The better embodiment of this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party Formula, can also be on the premise of this patent objective not be departed from the knowledge that one skilled in the relevant art possesses Make a variety of changes.

Claims (5)

1. a kind of spray-painting plant for wheel hub processing, including base;It is characterized in that, at left and right sides of the base upper surface Setting has support column vertically, and support column is fixedly connected with base;The support top end is fixedly installed top plate, and top plate level is set Put in support top end;Paint cylinder and headlamp are provided with the downside of the top plate;The hard water tube bottom end is provided with spray painting head, hard water Pressure valve is additionally provided with pipe;The headlamp is arranged at top plate bottom center line;The placement plate is horizontally disposed with, placement plate Upper end is provided with the first electric pushrod and strut;First electric pushrod is symmetricly set at left and right sides of placement plate top, the One electric pushrod top is provided with the second motor;The second electric pushrod, the second electric pushrod end are provided with second motor End is provided with snap ring;Placement plate top center symmetric setting has strut, and strut top is provided with electromagnet, and electromagnet top Portion is placed with wheel hub;The base bottom is provided with roller and fixing device;The base bottom is provided with roller by stent, Fixing device is provided with the outside of roller;The fixing device is made of rotating handles, fixed seat and threaded rod;The threaded rod Closed with the corresponding threaded holes on base;The rotating handles is fixedly connected on the top of threaded rod;The fixed seat is arranged on spiral shell The bottom of rasp bar, and weld together with threaded rod.
2. the spray-painting plant according to claim 1 for wheel hub processing, it is characterised in that the paint cylinder is fixed at Top plate bottom left, paint cylinder lower right is provided with hard water pipe, and hard water pipe is connected with paint cylinder inner cavity.
3. the spray-painting plant according to claim 1 for wheel hub processing, it is characterised in that base upper surface center The first motor is provided with line, the shaft top of the first motor is provided with placement plate.
4. the spray-painting plant according to claim 1 for wheel hub processing, it is characterised in that in the support column medial surface Portion is provided with air-heater, and air-heater is provided with gas tip by tracheae, and gas tip is located above wheel hub.
5. the spray-painting plant according to claim 1 for wheel hub processing, it is characterised in that the snap ring is arranged to semicircle Shape structure, and snap ring and the second electric pushrod end are fixedly connected.
CN201711141075.1A 2017-11-17 2017-11-17 A kind of spray-painting plant for wheel hub processing Pending CN107930908A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711141075.1A CN107930908A (en) 2017-11-17 2017-11-17 A kind of spray-painting plant for wheel hub processing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711141075.1A CN107930908A (en) 2017-11-17 2017-11-17 A kind of spray-painting plant for wheel hub processing

Publications (1)

Publication Number Publication Date
CN107930908A true CN107930908A (en) 2018-04-20

Family

ID=61931555

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711141075.1A Pending CN107930908A (en) 2017-11-17 2017-11-17 A kind of spray-painting plant for wheel hub processing

Country Status (1)

Country Link
CN (1) CN107930908A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108745706A (en) * 2018-06-05 2018-11-06 淄博天材自动化设备有限公司 A kind of automatic spraying machine
CN108787285A (en) * 2018-06-24 2018-11-13 严芳 A kind of piece surface spray-painting plant
CN109365180A (en) * 2018-12-25 2019-02-22 滁州职业技术学院 A kind of machinery production spray-painting plant
CN110038756A (en) * 2019-05-24 2019-07-23 山东金马汽车装备科技有限公司 A kind of automotive hub spray equipment
CN112156919A (en) * 2020-08-24 2021-01-01 国网河南省电力公司禹州市供电公司 Electric power insulator surface spraying device
CN114308582A (en) * 2021-11-18 2022-04-12 江苏丰辉环保科技有限公司 Drying device for anticorrosive heat-insulating coating
CN114618716A (en) * 2022-04-21 2022-06-14 江西荣恩轮毂制造有限公司 Paint spraying positioning device applied to aluminum alloy hub
CN115415084A (en) * 2022-10-10 2022-12-02 安徽省臻实机械制造有限公司 Paint spraying apparatus is used in well lid production

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103879914A (en) * 2012-12-19 2014-06-25 北汽福田汽车股份有限公司 Lifting apparatus
CN205761935U (en) * 2016-05-14 2016-12-07 泉州品创知识产权服务有限公司 A kind of highway efficient spray-painting plant of ferrum well lid

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103879914A (en) * 2012-12-19 2014-06-25 北汽福田汽车股份有限公司 Lifting apparatus
CN205761935U (en) * 2016-05-14 2016-12-07 泉州品创知识产权服务有限公司 A kind of highway efficient spray-painting plant of ferrum well lid

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108745706A (en) * 2018-06-05 2018-11-06 淄博天材自动化设备有限公司 A kind of automatic spraying machine
CN108745706B (en) * 2018-06-05 2020-11-17 淄博天材自动化设备有限公司 Automatic spraying machine
CN108787285A (en) * 2018-06-24 2018-11-13 严芳 A kind of piece surface spray-painting plant
CN109365180A (en) * 2018-12-25 2019-02-22 滁州职业技术学院 A kind of machinery production spray-painting plant
CN110038756A (en) * 2019-05-24 2019-07-23 山东金马汽车装备科技有限公司 A kind of automotive hub spray equipment
CN112156919A (en) * 2020-08-24 2021-01-01 国网河南省电力公司禹州市供电公司 Electric power insulator surface spraying device
CN114308582A (en) * 2021-11-18 2022-04-12 江苏丰辉环保科技有限公司 Drying device for anticorrosive heat-insulating coating
CN114618716A (en) * 2022-04-21 2022-06-14 江西荣恩轮毂制造有限公司 Paint spraying positioning device applied to aluminum alloy hub
CN114618716B (en) * 2022-04-21 2023-10-03 江西荣恩轮毂制造有限公司 Paint spraying positioning device applied to aluminum alloy hub
CN115415084A (en) * 2022-10-10 2022-12-02 安徽省臻实机械制造有限公司 Paint spraying apparatus is used in well lid production

Similar Documents

Publication Publication Date Title
CN107930908A (en) A kind of spray-painting plant for wheel hub processing
CN209238234U (en) A kind of spray-painting plant with overturning structure
CN106078143A (en) A kind of finishing frock that the location tray of engine cylinder cover is repaired and method for trimming
CN105903612B (en) A kind of plastic barrel automatic lifting spray painting drying mechanism
CN106853419A (en) A kind of steel cylinder auto spray painting device
CN211275122U (en) Automatic change car spraying device
CN109560495A (en) A kind of preparation method of long-life distribution box
CN105170373A (en) Full-automatic steel cylinder paint spraying device
CN105935639A (en) Hardware part paint spraying device
CN202700710U (en) Three-fork fixture for fixing helmet during rotary paint spraying
CN210434736U (en) Suspension device for workpiece spraying
CN214211077U (en) Suspension type automatic electrostatic spraying device
CN206747555U (en) Evaporative pattern flow coater apparatus is used in one kind casting
CN111843407B (en) Nitriding device and nitriding processing method for 304 stainless steel spiral reamer
CN204148079U (en) Wind power principal axis inner hole wall automatic spray apparatus
CN202388394U (en) Aluminum alloy wheel rework abrasive blasting protective device
CN208661507U (en) A kind of ultra-thin notebook metal spray-painting plant
CN207913998U (en) A kind of intelligent powder spray equipment for processing automotive hub
CN109729961A (en) A kind of novel sprinkling equipment of afforestation of automatic field
CN109365760A (en) Spraying method suitable for ball-type inner concave casting mould
CN205852185U (en) A kind of finishing frock that the location tray of engine cylinder cover is repaired
CN211801831U (en) Paint spraying device for prolonging service life of pressure container
CN205042674U (en) Steel bottle spraying equipment with stoving function
CN208034382U (en) A kind of semi-circular template automation cleaning device
CN203329896U (en) Auxiliary equipment for enabling inner surface and outer surface of tubular tank body to be sprayed simultaneously

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20180420