CN208644122U - A steel structure punching device - Google Patents

A steel structure punching device Download PDF

Info

Publication number
CN208644122U
CN208644122U CN201821519165.XU CN201821519165U CN208644122U CN 208644122 U CN208644122 U CN 208644122U CN 201821519165 U CN201821519165 U CN 201821519165U CN 208644122 U CN208644122 U CN 208644122U
Authority
CN
China
Prior art keywords
fixed
cavity
limit
steel construction
rod
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
CN201821519165.XU
Other languages
Chinese (zh)
Inventor
马辉
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.)
Binzhou University
Original Assignee
Binzhou University
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 Binzhou University filed Critical Binzhou University
Priority to CN201821519165.XU priority Critical patent/CN208644122U/en
Application granted granted Critical
Publication of CN208644122U publication Critical patent/CN208644122U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Drilling And Boring (AREA)

Abstract

The utility model discloses a kind of steel construction perforating devices, including bottom plate, the bottom plate is equipped with mobile device, the mobile device is equipped with fixed case, cavity is equipped in the fixed case, lifting device is equipped in the cavity, the lifting device is equipped with drilling motor, the lower end of the drilling motor is equipped with collet, drill bit is installed in the collet, the lower end two sides of the fixed case are respectively and fixedly provided with cylinder, the piston-rod end of two cylinders is fixed with connecting plate jointly, first opening there are two being set on the connecting plate, limiting slot is equipped in opposing sidewalls in two first openings.The utility model adapts to steel construction of different shapes, it is convenient that steel construction is carried out to stablize fixation, it can be according to the highly automated adjustment of steel construction, prevent bit damage, facilitate and accurately punched, reduce the labor intensity of operator, improves the Efficiency and accuracy of punching, the scrappage for reducing steel construction, reduces costs.

Description

A kind of steel construction perforating device
Technical field
The utility model relates to steel structure technology field more particularly to a kind of steel construction perforating devices.
Background technique
The structure that steel construction is made of steel material is one of main building construction types.Structure is mainly by fashioned iron With the components composition such as girder steel, steel column, steel truss made of steel plate etc., generallyd use between each component or component weld seam, bolt or Rivet interlacement.Because its self weight is lighter, and easy construction, it is widely used in the fields such as large-sized workshop, venue, Super High, steel construction It needs to punch to steel construction when being bolted between each component.
Existing steel construction perforating device does not adapt to steel construction of different shapes, cannot carry out stablizing to steel construction solid It is fixed, make steel construction that can generate slight mobile damage drill bit because of vibration in punching, also results in drilling and scrap, and existing steel knot Structure perforating device cannot accurately punch steel construction, reduce the accuracy of punching, and perforating efficiency is lower, for this purpose, I Propose a kind of robot offset grasping means of view-based access control model to solve the above problems.
Utility model content
Purpose of the utility model is to solve disadvantages existing in the prior art, and a kind of steel construction punching proposed Device.
To achieve the goals above, the utility model adopts the technical scheme that
A kind of steel construction perforating device, including bottom plate, the bottom plate are equipped with mobile device, and the mobile device is equipped with Fixed case, the fixed case is interior to be equipped with cavity, lifting device is equipped in the cavity, the lifting device, which is equipped with, punches electricity Machine, the lower end of the drilling motor are equipped with collet, and drill bit is equipped in the collet, and the lower end two sides of the fixed case are solid Surely have cylinder, the piston-rod end of two cylinders is fixed with connecting plate jointly, set on the connecting plate there are two first opening, two Limiting slot is equipped in opposing sidewalls in a first opening, two limiting slots in same first opening are one group, same Installation is there are two limit plate jointly in two limiting slots of group, and sliding sleeve is connected to mobile bar, the mobile bar on the limit plate Lower end be fixed with briquetting, the first spring is arranged in the mobile bar, one end of first spring is fixed on limit plate Lower end, and the other end of the first spring is fixed on the upper end of briquetting, the connecting plate is equipped with the second opening, and the second opening position Between two first openings, second opening is corresponding with drilling motor.
Preferably, the mobile device includes that four first support bars of bottom plate upper end quadrangle are arranged in, and four first The upper end of strut is fixed with loading plate jointly, and the lower end of the loading plate is equipped with sliding slot, turns on one end side wall in the sliding slot Dynamic to be connected with the first screw rod, screw thread is socketed with two sliding blocks on first screw rod, and the lower end of two sliding blocks is fixed on jointly Determine the upper end of case, the side of the loading plate is fixed with the first stepper motor, and the output shaft of first stepper motor, which runs through, to be held Support plate simultaneously extends in sliding slot, and the output shaft end of first stepper motor is fixed on one end of the first screw rod.
Preferably, the lifting device includes the gag lever post being arranged in cavity in opposing sidewalls, is slided on the gag lever post It is dynamic to be socketed with limited block, second spring is arranged on the gag lever post, one end of the second spring is fixed on the top in cavity Portion, and the other end of second spring is fixed on the upper end of limited block, the top in the cavity is rotatably connected to the second screw rod, institute It states screw thread on the second screw rod and is socketed with telescopic rod, the bottom that one end of the telescopic rod is run through in cavity simultaneously extends to fixed case Lower end, one end of the telescopic rod are fixed on the upper end of drilling motor, and the bottom in the cavity is fixed with second stepper motor, The output shaft end of the second stepper motor is fixed with rotating bar, and the upper end of the rotating bar is rotatably connected on the top in cavity Portion is sequentially connected between the rotating bar and the second screw rod by transmission belt.
Preferably, the upper end quadrangle of the bottom plate is all provided with fluted, is equidistantly installed in the opposing sidewalls in four grooves There are multiple roller bearings.
Preferably, the lower end quadrangle of the bottom plate is respectively and fixedly provided with second support bar.
Preferably, the lower end of four briquettings is respectively and fixedly provided with rubber pad.
Compared with prior art, the utility model has the beneficial effects that
1, by the cooperation between cylinder, connecting plate, limit plate, the first spring, mobile bar and briquetting, briquetting liter is driven Drop solves the problems, such as to be inconvenient to be fixed because of the reason of shape when steel construction punching, reach to steel of different shapes The effect that structure is fixed, is moved easily briquetting, can be according to the highly automated adjustment of steel construction;
2, by the cooperation between the first screw rod, sliding block, the second screw rod, telescopic rod and transmission belt, drilling motor is driven to move Dynamic and lifting, solves the problems, such as accurately punch steel construction, has reached and adjusted according to demand to drilling motor The effect of section improves the accuracy of punching;
In conclusion the present apparatus adapts to steel construction of different shapes, and it is convenient that steel construction is carried out to stablize fixation, it can basis The highly automated adjustment of steel construction, prevents bit damage, facilitates and accurately punched, and reduces the labor intensity of operator, mentions The high Efficiency and accuracy of punching, reduces the scrappage of steel construction, reduces costs.
Detailed description of the invention
Fig. 1 be the utility model proposes a kind of steel construction perforating device loading plate schematic diagram of internal structure;
Fig. 2 be the utility model proposes a kind of steel construction perforating device bottom plate structural schematic diagram;
Fig. 3 be the utility model proposes a kind of steel construction perforating device fixed case schematic diagram of internal structure;
Fig. 4 be the utility model proposes a kind of steel construction perforating device connecting plate schematic diagram of internal structure.
In figure: 1 sliding block, 2 first screw rods, 3 fixed cases, 4 telescopic rods, 5 cylinders, 6 connecting plates, 7 mobile bars, 8 first springs, 9 briquettings, 10 loading plates, 11 first stepper motors, 12 drilling motors, 13 collets, 14 roller bearings, 15 first support bars, 16 bottom plates, 17 Second support bar, 18 grooves, 19 second springs, 20 limited blocks, 21 gag lever posts, 22 transmission belts, 23 second screw rods, 24 rotating bars, 25 second stepper motors, 26 first openings, 27 limit plates.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.
Referring to Fig.1-4, the lower end quadrangle of a kind of steel construction perforating device, including bottom plate 16, bottom plate 16 is respectively and fixedly provided with second Support rod 17 stablizes support, and the upper end quadrangle of bottom plate 16 is all provided with fluted 18, equidistant in the opposing sidewalls in four grooves 18 Multiple roller bearings 14 are installed, the steel construction punched will be needed to be placed on bottom plate 16, moved by the roller bearing 14 on bottom plate 16 It is dynamic, the labor intensity of operator is reduced, perforating efficiency is improved;
Bottom plate 16 is equipped with mobile device, and mobile device is equipped with fixed case 3, cavity is equipped in fixed case 3, is set in cavity There is lifting device, lifting device is equipped with drilling motor 12, and the lower end of drilling motor 12 is equipped with collet 13, installation in collet 13 There is drill bit, the lower end two sides of fixed case 3 are respectively and fixedly provided with cylinder 5, and the piston-rod end of two cylinders 5 is fixed with connecting plate 6 jointly, It is set on connecting plate 6 there are two the first opening 26, is equipped with limiting slot in the opposing sidewalls in two first openings 26, same the Two limiting slots in one opening 26 are one group, and there are two limit plate 27, limits for installation jointly in same group of two limiting slots Sliding sleeve is connected to mobile bar 7 on plate 27, and the lower end of mobile bar 7 is fixed with briquetting 9, and mobile device, which is moved to, needs punch position, Cylinder 5 drives connecting plate 6 to decline, and then limit plate 27 is driven to decline, and contradicts four briquettings 9 and steel construction, 27 side of limit plate Just it moves, it is convenient to be according to circumstances adjusted, conveniently adapt to steel construction of different shapes;
The lower end of four briquettings 9 is respectively and fixedly provided with rubber pad, prevents pressure is excessive from leaving mark, and is arranged in mobile bar 7 One spring 8, one end of the first spring 8 is fixed on the lower end of limit plate 27, and the other end of the first spring 8 is fixed on briquetting 9 Upper end, connecting plate 6 is equipped with the second opening, and the second opening is located between two first openings 26, the second opening and punching electricity Machine 12 is corresponding, and the height of steel construction different location is adapted to by the first spring 8, further adapts to steel construction of different shapes, Convenient for carrying out stablizing fixation to steel construction.
In the utility model, mobile device includes that four first support bars 15 of 16 upper end quadrangle of bottom plate are arranged in, and four The upper end of first support bar 15 is fixed with loading plate 10 jointly, and the lower end of loading plate 10 is equipped with sliding slot, one end side wall in sliding slot On be rotatably connected to the first screw rod 2, screw thread is socketed with two sliding blocks 1 on the first screw rod 2, and the lower end of two sliding blocks 1 is fixed jointly In the upper end of fixed case 3, the side of loading plate 10 is fixed with the first stepper motor 11, and the output shaft of the first stepper motor 11 runs through Loading plate 10 simultaneously extends in sliding slot, and the output shaft end of the first stepper motor 11 is fixed on one end of the first screw rod 2, the first step The rotation of the first screw rod 2 is driven into motor 11, then band movable slider 1 is mobile, and sliding block 1 drives fixed case 3 mobile, facilitates according to punching Position be adjusted.
In the utility model, lifting device includes the gag lever post 21 being arranged in cavity in opposing sidewalls, on gag lever post 21 It has been slidably socketed limited block 20, second spring 19 is arranged on gag lever post 21, one end of second spring 19 is fixed in cavity Top, and the other end of second spring 19 is fixed on the upper end of limited block 20, the top in cavity is rotatably connected to the second screw rod 23, screw thread is socketed with telescopic rod 4 on the second screw rod 23, and bottom of the one end of telescopic rod 4 in cavity simultaneously extends to fixed case 3 Lower end, one end of telescopic rod 4 is fixed on the upper end of drilling motor 12, and the bottom in cavity is fixed with second stepper motor 25, The output shaft end of second stepper motor 25 is fixed with rotating bar 24, and the upper end of rotating bar 24 is rotatably connected on the top in cavity Portion is sequentially connected between rotating bar 24 and the second screw rod 23 by transmission belt 22, and second stepper motor 25 drives 24 turns of rotating bar It is dynamic, the rotation of the second screw rod 23 is then driven by transmission belt 22, the second screw rod 23 drives telescopic rod 4 to go up and down, and then drives punching Motor 12 is gone up and down, and drilling motor 12 drives collet 13 to rotate, and then drives drill bit rotation to punch steel construction, control is facilitated to punch Depth, improve the accuracy of punching.
In the utility model, in use, the steel construction punched will be needed to be placed on bottom plate 16, pass through the rolling on bottom plate 16 Axis 14 is moved, and the labor intensity of operator is reduced, and improves perforating efficiency, and the first stepper motor 11 drives the first screw rod 2 rotations, then band movable slider 1 is mobile, and sliding block 1 drives fixed case 3 mobile, facilitates and is adjusted according to the position of punching, cylinder 5 It drives connecting plate 6 to decline, then limit plate 27 is driven to decline, contradict four briquettings 9 and steel construction, it is suitable by the first spring 8 The height for answering steel construction different location facilitates adaptation steel construction of different shapes to prevent convenient for carrying out stablizing fixation to steel construction Bit damage, second stepper motor 25 drive rotating bar 24 to rotate, and then drive the rotation of the second screw rod 23 by transmission belt 22, the Two screw rods 23 drive telescopic rod 4 to go up and down, and then drilling motor 12 are driven to go up and down, and drilling motor 12 drives collet 13 to rotate, then Drill bit rotation is driven to punch steel construction, the depth for facilitating control to punch improves the accuracy of punching.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not It is confined to this, anyone skilled in the art is within the technical scope disclosed by the utility model, practical according to this Novel technical solution and its utility model design are subject to equivalent substitution or change, should all cover the protection model in the utility model Within enclosing.

Claims (6)

1.一种钢结构打孔装置,包括底板(16),其特征在于:所述底板(16)上设有移动装置,所述移动装置上设有固定箱(3),所述固定箱(3)内设有空腔,所述空腔内设有升降装置,所述升降装置上设有打孔电机(12),所述打孔电机(12)的下端安装有夹头(13),所述夹头(13)内安装有钻头,所述固定箱(3)的下端两侧均固定有气缸(5),两个气缸(5)的活塞杆末端共同固定有连接板(6),所述连接板(6)上设有两个第一开口(26),两个第一开口(26)内的相对侧壁上均设有限位槽,同一个第一开口(26)内的两个限位槽为一组,同一组的两个限位槽内共同安装有两个限位板(27),所述限位板(27)上滑动套接有移动杆(7),所述移动杆(7)的下端固定有压块(9),所述移动杆(7)上套设有第一弹簧(8),所述第一弹簧(8)的一端固定在限位板(27)的下端,且第一弹簧(8)的另一端固定在压块(9)的上端,所述连接板(6)上设有第二开口,且第二开口位于两个第一开口(26)之间,所述第二开口与打孔电机(12)相对应。1. A steel structure punching device, comprising a bottom plate (16), characterized in that: a mobile device is provided on the bottom plate (16), and a fixed box (3) is provided on the mobile device, and the fixed box ( 3) A cavity is provided inside, a lifting device is arranged in the cavity, a punching motor (12) is arranged on the lifting device, and a chuck (13) is installed on the lower end of the punching motor (12), A drill bit is installed in the chuck (13), a cylinder (5) is fixed on both sides of the lower end of the fixing box (3), and a connecting plate (6) is fixed together at the ends of the piston rods of the two cylinders (5). The connecting plate (6) is provided with two first openings (26), the opposite side walls in the two first openings (26) are provided with limit grooves, and the two first openings (26) are provided with limit grooves. Each limit slot is a group, two limit plates (27) are installed in the two limit slots of the same group, and a moving rod (7) is slidably sleeved on the limit plates (27). A pressing block (9) is fixed at the lower end of the moving rod (7), a first spring (8) is sleeved on the moving rod (7), and one end of the first spring (8) is fixed on the limiting plate (27). ), and the other end of the first spring (8) is fixed on the upper end of the pressing block (9), the connecting plate (6) is provided with a second opening, and the second opening is located in the two first openings (26). ), the second opening corresponds to the punching motor (12). 2.根据权利要求1所述的一种钢结构打孔装置,其特征在于,所述移动装置包括设置在底板(16)上端四角的四个第一支撑杆(15),四个第一支撑杆(15)的上端共同固定有承载板(10),所述承载板(10)的下端设有滑槽,所述滑槽内的一端侧壁上转动连接有第一螺杆(2),所述第一螺杆(2)上螺纹套接有两个滑块(1),两个滑块(1)的下端共同固定在固定箱(3)的上端,所述承载板(10)的一侧固定有第一步进电机(11),所述第一步进电机(11)的输出轴贯穿承载板(10)并延伸至滑槽内,所述第一步进电机(11)的输出轴末端固定在第一螺杆(2)的一端。2. A steel structure punching device according to claim 1, characterized in that the moving device comprises four first support rods (15) arranged at the four corners of the upper end of the bottom plate (16), and the four first support rods The upper end of the rod (15) is jointly fixed with a bearing plate (10), the lower end of the bearing plate (10) is provided with a chute, and a first screw (2) is rotatably connected to the side wall of one end in the chute, so that the The first screw (2) is threadedly sleeved with two sliding blocks (1), and the lower ends of the two sliding blocks (1) are jointly fixed on the upper end of the fixing box (3), and one side of the bearing plate (10) A first step motor (11) is fixed, the output shaft of the first step motor (11) penetrates the bearing plate (10) and extends into the chute, and the output shaft of the first step motor (11) The end is fixed on one end of the first screw (2). 3.根据权利要求1所述的一种钢结构打孔装置,其特征在于,所述升降装置包括设置在空腔内相对侧壁上的限位杆(21),所述限位杆(21)上滑动套接有限位块(20),所述限位杆(21)上套设有第二弹簧(19),所述第二弹簧(19)的一端固定在空腔内的顶部,且第二弹簧(19)的另一端固定在限位块(20)的上端,所述空腔内的顶部转动连接有第二螺杆(23),所述第二螺杆(23)上螺纹套接有伸缩杆(4),所述伸缩杆(4)的一端贯穿空腔内的底部并延伸至固定箱(3)的下端,所述伸缩杆(4)的一端固定在打孔电机(12)的上端,所述空腔内的底部固定有第二步进电机(25),所述第二步进电机(25)的输出轴末端固定有转动杆(24),所述转动杆(24)的上端转动连接在空腔内的顶部,所述转动杆(24)与第二螺杆(23)之间通过传动带(22)传动连接。3. A steel structure punching device according to claim 1, characterized in that, the lifting device comprises a limit rod (21) arranged on the opposite side walls in the cavity, and the limit rod (21) ) is slidably sleeved with a limit block (20), a second spring (19) is sleeved on the limit rod (21), and one end of the second spring (19) is fixed on the top of the cavity, and The other end of the second spring (19) is fixed on the upper end of the limit block (20), the top of the cavity is rotatably connected with a second screw (23), and the second screw (23) is threadedly sleeved with a second screw (23). A telescopic rod (4), one end of the telescopic rod (4) penetrates through the bottom of the cavity and extends to the lower end of the fixing box (3), and one end of the telescopic rod (4) is fixed on the hole of the punching motor (12). At the upper end, a second stepping motor (25) is fixed at the bottom of the cavity, and a rotating rod (24) is fixed at the end of the output shaft of the second stepping motor (25). The upper end is rotatably connected to the top of the cavity, and the rotating rod (24) and the second screw (23) are connected through a transmission belt (22). 4.根据权利要求1所述的一种钢结构打孔装置,其特征在于,所述底板(16)的上端四角均设有凹槽(18),四个凹槽(18)内的相对侧壁上等间距安装有多个滚轴(14)。4. A steel structure punching device according to claim 1, characterized in that, four corners of the upper end of the bottom plate (16) are provided with grooves (18), and the opposite sides in the four grooves (18) are provided with grooves (18). A plurality of rollers (14) are installed on the wall at equal intervals. 5.根据权利要求1所述的一种钢结构打孔装置,其特征在于,所述底板(16)的下端四角均固定有第二支撑杆(17)。5. A steel structure punching device according to claim 1, characterized in that, second support rods (17) are fixed at the four corners of the lower end of the bottom plate (16). 6.根据权利要求1所述的一种钢结构打孔装置,其特征在于,四个压块(9)的下端均固定有橡胶垫。6. A steel structure punching device according to claim 1, characterized in that, rubber pads are fixed on the lower ends of the four pressing blocks (9).
CN201821519165.XU 2018-09-17 2018-09-17 A steel structure punching device Expired - Fee Related CN208644122U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821519165.XU CN208644122U (en) 2018-09-17 2018-09-17 A steel structure punching device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821519165.XU CN208644122U (en) 2018-09-17 2018-09-17 A steel structure punching device

Publications (1)

Publication Number Publication Date
CN208644122U true CN208644122U (en) 2019-03-26

Family

ID=65792743

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821519165.XU Expired - Fee Related CN208644122U (en) 2018-09-17 2018-09-17 A steel structure punching device

Country Status (1)

Country Link
CN (1) CN208644122U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111890569A (en) * 2020-08-06 2020-11-06 索军锋 A drilling equipment that is used for electronic chip processing apparatus to have a limit structure
CN112846307A (en) * 2020-12-26 2021-05-28 东莞市天技实业有限公司 Drilling equipment for antenna production
CN118815362A (en) * 2024-07-05 2024-10-22 中冶(北京)交通科技发展有限公司 A punching device for installing highway guardrail

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111890569A (en) * 2020-08-06 2020-11-06 索军锋 A drilling equipment that is used for electronic chip processing apparatus to have a limit structure
CN112846307A (en) * 2020-12-26 2021-05-28 东莞市天技实业有限公司 Drilling equipment for antenna production
CN118815362A (en) * 2024-07-05 2024-10-22 中冶(北京)交通科技发展有限公司 A punching device for installing highway guardrail

Similar Documents

Publication Publication Date Title
CN103341564B (en) Assemblnig confined space plate multiple site punching automation feeding feed apparatus
CN209035242U (en) Puncher is used in a kind of machining
CN206689463U (en) A kind of movable mechanical maintenance of equipment device with damping device
CN208644122U (en) A steel structure punching device
CN107914154A (en) A kind of crane workpiece perforating device easy to adjust
CN109664107A (en) Motor flange drilling and cutting integrated equipment
CN107414126A (en) A kind of automatic drilling device of turning
CN208327235U (en) A kind of building machinery hoistable platform convenient for adjusting
CN219292645U (en) Auxiliary feeding device of hydraulic forging press
CN202129879U (en) Eccentric reaming device of back-bolt hole drilling machine for stones
CN204018780U (en) A kind of double-ended double-station holes pressure-plate boring device
CN107378046B (en) Inclined hole drilling device for numerical control machining center
CN208195724U (en) A kind of Hardware fitting perforating device
CN214186090U (en) Stamping and drilling integrated processing equipment for plate-shaped metal products
CN206373394U (en) A kind of convenient steel tube drilling device of feeding
CN206116192U (en) Iron core automatic alignment lamination device
CN208245862U (en) Perforating device is used in a kind of forging of bearing
CN206335157U (en) A kind of batch-automated processing unit (plant) of angle steel
CN209647352U (en) Aluminium sheet processes localization tool
CN111804777B (en) Profile bending processing forming method
CN205673626U (en) A kind of mechanical parts puncher
CN208844926U (en) A kind of building engineering construction puncher
CN109226817A (en) A kind of Production of bearing perforating device
CN107552670A (en) A stamping feeding robot
CN209094595U (en) A kind of automatic production line puncher

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: 20190326

Termination date: 20210917

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