CN208898048U - Rapid material-feeding mechanism for die-cutting machine - Google Patents

Rapid material-feeding mechanism for die-cutting machine Download PDF

Info

Publication number
CN208898048U
CN208898048U CN201821531399.6U CN201821531399U CN208898048U CN 208898048 U CN208898048 U CN 208898048U CN 201821531399 U CN201821531399 U CN 201821531399U CN 208898048 U CN208898048 U CN 208898048U
Authority
CN
China
Prior art keywords
rack
steel disc
feeding
mounting base
die
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
CN201821531399.6U
Other languages
Chinese (zh)
Inventor
金允通
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.)
YIRUN PACKAGING CONTAINER CO Ltd TIANJIN CITY
Original Assignee
YIRUN PACKAGING CONTAINER CO Ltd TIANJIN CITY
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 YIRUN PACKAGING CONTAINER CO Ltd TIANJIN CITY filed Critical YIRUN PACKAGING CONTAINER CO Ltd TIANJIN CITY
Priority to CN201821531399.6U priority Critical patent/CN208898048U/en
Application granted granted Critical
Publication of CN208898048U publication Critical patent/CN208898048U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Specific Conveyance Elements (AREA)

Abstract

The utility model discloses a kind of rapid material-feeding mechanisms for die-cutting machine, it is related to die-cutting machine technical field, its key points of the technical solution are that the transporting direction in the rack along steel disc is rotatably connected to multiple feeding rollers including the rack for being mounted on the hydraulic elevator of feeding rack one end and being mounted at the top of hydraulic elevator;It is provided with cradle in the rack, mounting base is provided on the cradle, the mounting base is connected to cradle along the transporting direction sliding of steel disc, the mobile actuator of drive installation seat is provided on the cradle;Feeding device of the multiple groups for being transported to steel disc on feeding rack is provided in the mounting base.The utility model solves the problems, such as that manually carrying out feeding keeps production efficiency lower, and having reached quick carry out feeding makes the higher effect of production efficiency.

Description

Rapid material-feeding mechanism for die-cutting machine
Technical field
The utility model relates to die-cutting machine technical fields, more specifically, it be related to it is a kind of for the quick of die-cutting machine Expect mechanism.
Background technique
Die-cutting machine (Die Cutting Machine) is called hydraulic cutting presser, guillotine, numerical control stamping machine, is mainly used for corresponding The cross cutting (complete disconnected, half disconnected) of some nonmetallic materials, adhesive sticker, EVA, double-sided adhesive, electronics, mobile phone rubber mat etc., impression and gold stamping Operation, fitting, automatic waste discharge can also cut some relatively thin steel discs, and die-cutting machine utilizes steel knife, hardware dies, steel wire (or steel engraving at template), is applied certain pressure by coining plate, steel disc or cardboard is rolled and are cut into certain shapes.It is print The important equipment of machine-shaping is packed afterwards.
The prior art can refer to the Chinese invention patent application file of Publication No. CN107775725A, and it discloses one kind Die-cutting machine, its key points of the technical solution are that including rack, rack includes upper mounting plate and moving platform, and the side wall of rack is provided with side and opens Mouthful and support plate rack, chase preassembling device for pre-installing for chase is additionally provided in rack and for that plate rack will be ask to be transported in Conveying device between chase preassembling device and side opening;Conveying device include the sliding rail being fixed on shell outside wall, with And the sliding driving device for driving support plate rack to slide on the slide rail;Chase preassembling device includes support frame and for holding The adjustable shelf of template frame and the fixed frame for accepting die-cutting steel-plate and control driving device are connect, adjustable shelf sliding is connected to On support frame, fixed frame is fixedly connected on the support frame, and control driving device is able to drive what adjustable shelf slid on the support frame In the process close to or far from fixed frame.
But the not set feeding device of above equipment, it needs that manually workpiece to be processed is put on plate supporting frame so every time, Thus production efficiency in this way is lower.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of for the quick of die-cutting machine Expect mechanism, carries out feeding without artificial, production efficiency can be improved in this way.
To achieve the above object, the utility model provides following technical solution: a kind of rapid material-feeding for die-cutting machine Mechanism, including the rack for being mounted on the hydraulic elevator of feeding rack one end and being mounted at the top of hydraulic elevator, the rack On along the transporting direction of steel disc be rotatably connected to multiple feeding rollers;It is provided with cradle in the rack, is set on the cradle It is equipped with mounting base, the mounting base is connected to cradle along the transporting direction sliding of steel disc, driving is provided on the cradle The mobile actuator of mounting base;Feeding device of the multiple groups for being transported to steel disc on feeding rack is provided in the mounting base.
By using above-mentioned technical proposal, the multiple steel discs being placed on plate are put to hydraulic elevator by fork truck, Then it pushes plate to move plate on feeding roller by fork truck, multiple pieces of steel can be made close to feeding rack in this way;When multi-disc steel After piece places, a piece of steel disc is lifted by feeding device, when steel disc is raised, pushes mounting base to move by actuator Dynamic, mounting base is mobile to drive steel disc movement to send steel disc to feeding rack, and then again being put down steel disc by feeding device makes steel Piece is fallen on cradle;Then the transport for carrying out bottom sheet steel disc starts hydraulic elevator before the transport of bottom sheet steel disc, hydraulic Elevator rises a certain distance automatically, can carry out feeding in this way with coordinated loading device;Steel disc is carried out by feeding device Production efficiency can be improved in rapid material-feeding in this way.
The utility model is further arranged to: the actuator is the first cylinder, and the piston rod of first cylinder is along steel The transporting direction of piece is fixedly connected with mounting base.
By using above-mentioned technical proposal, Electric Actuator is compared, the first cylinder can reliably work under severe conditions, And it is easy to operate, it can be achieved substantially non-maintaining.
The utility model is further arranged to: feeding device described in every group include the second cylinder for being mounted in mounting base with And it is mounted on the absorbent module on the piston rod of the second cylinder.
By using above-mentioned technical proposal, start the second cylinder, the piston rod of the second cylinder drives absorbent module to moving down It is dynamic that steel disc is sucked, the second cylinder is closed, the piston rod of the second cylinder drives steel disc to rise, and is convenient for sending steel disc to charging in this way Frame.
The utility model is further arranged to: the absorbent module includes the negative pressure being mounted on the piston rod of the second cylinder Pipeline, the sucker being mounted on negative-pressure pipeline and the vacuum generator being mounted in mounting base;The negative-pressure pipeline passes through gas Pipe is connected to vacuum generator, and the sucker is connected to negative-pressure pipeline.
By using above-mentioned technical proposal, make to generate negative pressure inside negative-pressure pipeline by vacuum generator, in negative-pressure pipeline Portion, which generates negative pressure, makes sucker generate suction, and steel disc can be sucked for such sucker.
The utility model is further arranged to: there are two horizontally disposed guide rails for setting in the cradle, described in two Guide rail is arranged along the transporting direction of steel disc;The both ends of the mounting base have been respectively and fixedly connected with sleeve, and two sleeves cover respectively Two guide rails are connected to, and two sleeves are connected to two guide rails along the transporting direction sliding of steel disc respectively.
By using above-mentioned technical proposal, guide rail has guiding role to sleeve, can reduce mounting base in this way along steel A possibility that deviateing in the transporting direction slipping of piece.
The utility model is further arranged to: the two sides of the rack are separately installed with the limit for being limited to steel disc Hyte part, limit assembly described in every group include the abutting block that rack is connected to along the width direction sliding of rack, the abutting block Side be provided with the magnet for adsorbing steel disc, driving is provided in the rack and abuts the mobile driving assembly of block.
By using above-mentioned technical proposal, two groups of limit assemblies can be limited the both ends of steel disc, can be dropped in this way Low adsorption component is when adsorbing first steel disc, a possibility that second steel disc tilts.
The utility model is further arranged to: the bottom for abutting block is connected with sliding block, offers confession in the rack The sliding slot that the sliding block slides along the width direction of rack.
By using above-mentioned technical proposal, sliding slot has guiding role to sliding block, can reduce abut block along machine in this way A possibility that deviateing in the width direction slipping of frame.
The utility model is further arranged to: the driving component includes being fixed in fixed block and the threaded connection of rack In the lead screw of fixed block;One end of the lead screw is rotationally connected with abutting block, and the other end is connected with handwheel.
By using above-mentioned technical proposal, by rotating hand wheel rotating lead screw, lead screw pushes during rotation abuts block It is mobile, the mobile band moving magnet movement of block is abutted, can make magnet that steel disc to be sucked in this way;It is driven by driving assembly and abuts block shifting It is dynamic, the labor intensity of operator can be reduced in this way.
In conclusion the utility model has the advantages that compared with the prior art
1. putting the multiple steel discs being placed on plate to hydraulic elevator by fork truck, plate is then pushed by fork truck It moves plate on feeding roller, multiple pieces of steel can be made close to feeding rack in this way;After multiple pieces of steel places, pass through feeding Device lifts a piece of steel disc, when steel disc is raised, pushes mounting base mobile by actuator, mounting base is mobile to drive steel disc Movement send steel disc to feeding rack, and then again being put down steel disc by feeding device falls into steel disc on cradle;Then into The transport of row bottom sheet steel disc, bottom sheet steel disc transport before, start hydraulic elevator, hydraulic elevator rises automatically centainly away from From, in this way can with coordinated loading device carry out feeding;The rapid material-feeding that steel disc is carried out by feeding device, can be improved life in this way Produce efficiency;
2. guide rail has guiding role to sleeve, mounting base can be reduced in this way in the transporting direction slipping along steel disc Middle a possibility that deviateing;
3. two groups of limit assemblies can limit the both ends of steel disc, absorbent module can be reduced in this way in absorption the When a piece of steel disc, a possibility that second steel disc tilts.
Detailed description of the invention
Fig. 1 is the overall structure diagram of embodiment;
Fig. 2 is the structural schematic diagram that feeding device is highlighted in embodiment;
Fig. 3 is the structural schematic diagram that limit assembly is highlighted in embodiment.
In figure: 1, steel disc;2, feeding rack;3, hydraulic elevator;4, rack;41, feeding roller;42, cradle;421, it leads Rail;43, mounting base;431, sleeve;44, the first cylinder;45, sliding slot;5, feeding device;51, the second cylinder;52, absorbent module; 521, negative-pressure pipeline;522, sucker;523, vacuum generator;6, limit assembly;61, block is abutted;611, sliding block;62, magnet; 63, driving assembly;631, fixed block;632, lead screw;633, handwheel.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing.The wherein identical attached drawing of identical components Label indicates.It should be noted that word "front", "rear" used in the following description, "left", "right", "up" and "down" refer to It is the direction in attached drawing, word " bottom surface " and " top surface ", "inner" and "outside" are referred respectively to towards or away from particular elements geometry The direction at center.
Embodiment: a kind of feed mechanism in die-cutting machine, as shown in Figure 1, including the hydraulic liter for being mounted on 2 one end of feeding rack Drop machine 3 and the rack 4 for being mounted on the top of hydraulic elevator 3, the transporting direction in rack 4 along steel disc 1 are rotatably connected to multiple Feeding roller 41;It is provided with cradle 42 in rack 4, mounting base 43, transport of the mounting base 43 along steel disc 1 are provided on cradle 42 Direction sliding is connected to cradle 42, and the mobile actuator of drive installation seat 43, actuator first are provided on cradle 42 The piston rod of cylinder 44, the first cylinder 44 is fixedly connected along the transporting direction of steel disc 1 with mounting base 43;It is provided in mounting base 43 Multiple groups are used for the feeding device 5 being transported to steel disc 1 on feeding rack 2.The multiple steel discs 1 being placed on plate are put to liquid by fork truck It presses on elevator 3, then pushes plate to move plate on feeding roller 41 by fork truck, multiple pieces of steel 1 can be made close in this way Feeding rack 2;After multiple pieces of steel 1 places, a piece of steel disc 1 is lifted by feeding device 5, when steel disc 1 is raised, is led to Part of overdriving pushes mounting base 43 mobile, and mounting base 43 is mobile to drive the movement of steel disc 1 to send steel disc 1 to feeding rack 2, then again Being put down steel disc 1 by feeding device 5 falls into steel disc 1 on cradle 42;Then the transport for carrying out bottom sheet steel disc 1, in bottom sheet Before steel disc 1 transports, start hydraulic elevator 3, hydraulic elevator 3 rises a certain distance automatically, can cooperate feeding in this way Device 5 carries out feeding;The rapid material-feeding that steel disc 1 is carried out by feeding device 5, can be improved production efficiency in this way.
As shown in Figure 1, there are two horizontally disposed guide rails 421 for setting in cradle 42, two guide rails 421 are along steel disc 1 Transporting direction setting;The both ends of mounting base 43 have been respectively and fixedly connected with sleeve 431, and two sleeves 431 are socketed on two guide rails respectively 421, and two sleeves 431 are connected to two guide rails 421 along the transporting direction sliding of steel disc 1 respectively.Guide rail 421 is to sleeve 431 have guiding role, and can reduce that mounting base 43 deviates in the transporting direction slipping along steel disc 1 in this way can It can property.
As depicted in figs. 1 and 2, every group of feeding device 5 includes the second cylinder 51 being mounted in mounting base 43 and installation Absorbent module 52 on the piston rod of the second cylinder 51;Absorbent module 52 includes being mounted on the piston rod of the second cylinder 51 Negative-pressure pipeline 521, the sucker 522 being mounted on negative-pressure pipeline 521 and the vacuum generator 523 being mounted in mounting base 43; Negative-pressure pipeline 521 is connected to by tracheae with vacuum generator 523, and sucker 522 is connected to negative-pressure pipeline 521.Occurred by vacuum Device 523 makes to generate negative pressure inside negative-pressure pipeline 521, and negative pressure is generated inside negative-pressure pipeline 521 makes sucker 522 generate suction;Work as suction After disk 522 generates suction, start the second cylinder 51, the piston rod drive sucker 522 of the second cylinder 51, which moves down, inhales steel disc 1 Firmly, the second cylinder 51 is closed, the piston rod of the second cylinder 51 drives steel disc 1 to rise, and is convenient for sending steel disc 1 to feeding rack 2 in this way.
As shown in figures 1 and 3, the two sides of rack 4 are separately installed with the limit assembly 6 for being limited to steel disc 1, often Group limit assembly 6 includes the abutting block 61 that rack 4 is connected to along the width direction sliding of rack 4, abuts block 61 and is vertically arranged;It supports The side for connecing block 61 is provided with magnet 62 for adsorbing steel disc 1, and driving is provided in rack 4 and abuts the mobile driving group of block 61 Part 63;Driving assembly 63 is including being fixed in the fixed block 631 of rack 4 and being threadedly connected to the lead screw 632 of fixed block 631;Silk One end of thick stick 632, which is rotationally connected with, abuts block 61, and the other end is connected with handwheel 633.By rotating 633 rotational lead screw 632 of handwheel, Lead screw 632 pushes during rotation abuts the movement of block 61, and the mobile band moving magnet 62 of abutting block 61 is mobile, can make magnet 62 in this way Steel disc 1 is sucked;It is driven by driving assembly 63 and abuts the movement of block 61, the labor intensity of operator can be reduced in this way.
As shown in figure 3, the bottom for abutting block 61 is connected with sliding block 611, offered in rack 4 for sliding block 611 along rack 4 The sliding slot 45 of width direction sliding.Sliding slot 45 has guiding role to sliding block 611, can reduce abut block 61 along rack in this way A possibility that deviateing in 4 width direction slipping.
The working principle of the feed mechanism of this kind of die-cutting machine is as follows:
The multiple steel discs 1 being placed on plate are put to hydraulic elevator 3 by fork truck, plate is then pushed by fork truck It moves plate on feeding roller 41, multiple pieces of steel 1 can be made close to feeding rack 2 in this way;After multiple pieces of steel 1 places, lead to Crossing vacuum generator 523 makes to generate negative pressure inside negative-pressure pipeline 521, and negative pressure is generated inside negative-pressure pipeline 521 generates sucker 522 Suction;After sucker 522 generates suction, start the second cylinder 51, the piston rod of the second cylinder 51 drives sucker 522 to move down Steel disc 1 is sucked, the second cylinder 51 is closed, the piston rod of the second cylinder 51 drives steel disc 1 to rise;When steel disc 1 is raised, lead to Crossing the first cylinder 44 pushes mounting base 43 mobile, and mounting base 43 is mobile to drive the movement of steel disc 1 to send steel disc 1 to feeding rack 2;When After steel disc 1 moves at feeding rack 2,521 internal negative pressure of negative-pressure pipeline is set to disappear by vacuum generator 523, in negative-pressure pipeline 521 Negative pressure disappearance in portion's makes the suction of sucker 522 disappear;After the suction of sucker 522 disappears, steel disc 1 can be separated with sucker 522, be made in this way Steel disc 1 is fallen on cradle 42;Then the transport for carrying out bottom sheet steel disc 1 starts hydraulic lifting before the transport of bottom sheet steel disc 1 Machine 3, hydraulic elevator 3 rise a certain distance automatically, can carry out feeding in this way with coordinated loading device 5.
The above is only the preferred embodiment of the utility model, and the protection scope of the utility model is not limited merely to Above-described embodiment, technical solution belonging to the idea of the present invention belong to the protection scope of the utility model.It should refer to Out, for those skilled in the art, it is without departing from the principle of the utility model it is several improvement and Retouching, these improvements and modifications also should be regarded as the protection scope of the utility model.

Claims (8)

1. a kind of rapid material-feeding mechanism for die-cutting machine, including be mounted on feeding rack (2) one end hydraulic elevator (3) and The rack (4) being mounted at the top of hydraulic elevator (3), it is characterised in that: along the transporting direction of steel disc (1) on the rack (4) It is rotatably connected to multiple feeding rollers (41);It is provided with cradle (42) on the rack (4), is provided on the cradle (42) Mounting base (43), the mounting base (43) are connected to cradle (42), the cradle along the transporting direction sliding of steel disc (1) (42) drive installation seat (43) mobile actuator is provided on;Multiple groups are provided on the mounting base (43) to be used for steel disc (1) feeding device (5) being transported on feeding rack (2).
2. the rapid material-feeding mechanism according to claim 1 for die-cutting machine, it is characterised in that: the actuator is first The piston rod of cylinder (44), first cylinder (44) is fixedly connected along the transporting direction of steel disc (1) with mounting base (43).
3. the rapid material-feeding mechanism according to claim 1 for die-cutting machine, it is characterised in that: feeding device described in every group It (5) include that be mounted on mounting base (43) the second cylinder (51) and the absorption that is mounted on the piston rod of the second cylinder (51) Component (52).
4. the rapid material-feeding mechanism according to claim 3 for die-cutting machine, it is characterised in that: the absorbent module (52) Negative-pressure pipeline (521) on piston rod including being mounted on the second cylinder (51), the sucker being mounted on negative-pressure pipeline (521) (522) and the vacuum generator (523) that is mounted on mounting base (43);The negative-pressure pipeline (521) passes through tracheae and vacuum Generator (523) connection, the sucker (522) are connected to negative-pressure pipeline (521).
5. the rapid material-feeding mechanism according to claim 1 for die-cutting machine, it is characterised in that: in the cradle (42) There are two horizontally disposed guide rail (421), two guide rails (421) to be arranged along the transporting direction of steel disc (1) for setting;It is described The both ends of mounting base (43) have been respectively and fixedly connected with sleeve (431), and two sleeves (431) are socketed on two guide rails (421) respectively, And two sleeves (431) are connected to two guide rails (421) along the transporting direction sliding of steel disc (1) respectively.
6. the rapid material-feeding mechanism according to claim 1 for die-cutting machine, it is characterised in that: the two of the rack (4) Side is separately installed with the limit assembly (6) for being limited to steel disc (1), and limit assembly described in every group (6) includes along rack (4) width direction sliding is connected to the abutting block (61) of rack (4), and the side for abutting block (61) is provided with for adsorbing The magnet (62) of steel disc (1) is provided with driving on the rack (4) and abuts block (61) mobile driving assembly (63).
7. the rapid material-feeding mechanism according to claim 6 for die-cutting machine, it is characterised in that: abutting block (61) Bottom is connected with sliding block (611), and the width direction for the sliding block (611) along rack (4) is offered on the rack (4) and is slid Sliding slot (45).
8. the rapid material-feeding mechanism according to claim 7 for die-cutting machine, it is characterised in that: the driving component (63) Including the fixed block (631) for being fixed in rack (4) and the lead screw (632) for being threadedly connected to fixed block (631);The lead screw (632) one end, which is rotationally connected with, abuts block (61), and the other end is connected with handwheel (633).
CN201821531399.6U 2018-09-18 2018-09-18 Rapid material-feeding mechanism for die-cutting machine Expired - Fee Related CN208898048U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821531399.6U CN208898048U (en) 2018-09-18 2018-09-18 Rapid material-feeding mechanism for die-cutting machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821531399.6U CN208898048U (en) 2018-09-18 2018-09-18 Rapid material-feeding mechanism for die-cutting machine

Publications (1)

Publication Number Publication Date
CN208898048U true CN208898048U (en) 2019-05-24

Family

ID=66572920

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821531399.6U Expired - Fee Related CN208898048U (en) 2018-09-18 2018-09-18 Rapid material-feeding mechanism for die-cutting machine

Country Status (1)

Country Link
CN (1) CN208898048U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113172353A (en) * 2021-06-29 2021-07-27 江苏众旺鑫智能设备有限公司 Make things convenient for laser cross cutting equipment of material loading
CN114055573A (en) * 2021-11-12 2022-02-18 湖南宏森新材料科技有限责任公司 Plywood hot press automatic feeding

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113172353A (en) * 2021-06-29 2021-07-27 江苏众旺鑫智能设备有限公司 Make things convenient for laser cross cutting equipment of material loading
CN114055573A (en) * 2021-11-12 2022-02-18 湖南宏森新材料科技有限责任公司 Plywood hot press automatic feeding

Similar Documents

Publication Publication Date Title
CN208898048U (en) Rapid material-feeding mechanism for die-cutting machine
CN113790217B (en) Bearing roller pin assembly equipment
KR100875278B1 (en) Apparatus for cutting out paper
CN210701920U (en) Numerical control punching machine device for producing pop can covers
CN210172695U (en) Circular panel cutting conveyor
CN212315002U (en) Many storehouses magnetic sheet material loading machine
CN116214636A (en) Intelligent sawing machine
CN216471115U (en) Square sheet roller material machine capable of integrally supporting and feeding materials
CN206050313U (en) Coat peeling unit based on upper film gripping body
CN213533002U (en) Door plate hot press
CN112775892B (en) Automatic assembling device for inner door adhesive tape of dish washer
CN210675649U (en) Automatic feeding device for spraying of base plate
CN213033801U (en) Automatic feeding device for band sawing machine for machining center plate backing plate
CN211915277U (en) Plate bending machine
CN114653829A (en) Automatic feeding continuous stamping production line for hardware sheets
CN208960829U (en) A kind of large pressing machine automatic loading/unloading unit
CN212531026U (en) Auxiliary conveying belt for plates
CN208327816U (en) A kind of bottom type glass cutting machine cut for glass
CN109093022A (en) A kind of large pressing machine automatic loading/unloading unit
CN206407652U (en) Air-conditioning lower margin transporter
CN215549931U (en) Stone material side fluting device
CN220532802U (en) Automatic feeding equipment of punch press
CN220097715U (en) Chip mounter
CN217434484U (en) Rubber belt numerical control punching machine
CN209452558U (en) Fully automatic forming machine is used in Novel centralizer production

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190524