CN213915236U - Clean stacking machine for wood boards - Google Patents

Clean stacking machine for wood boards Download PDF

Info

Publication number
CN213915236U
CN213915236U CN202022285205.2U CN202022285205U CN213915236U CN 213915236 U CN213915236 U CN 213915236U CN 202022285205 U CN202022285205 U CN 202022285205U CN 213915236 U CN213915236 U CN 213915236U
Authority
CN
China
Prior art keywords
plate
clean
box
moving
lower extreme
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
CN202022285205.2U
Other languages
Chinese (zh)
Inventor
聂秋华
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.)
Jiangxi Shangxin Wood Industry Co ltd
Original Assignee
Jiangxi Shangxin Wood Industry 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 Jiangxi Shangxin Wood Industry Co ltd filed Critical Jiangxi Shangxin Wood Industry Co ltd
Priority to CN202022285205.2U priority Critical patent/CN213915236U/en
Application granted granted Critical
Publication of CN213915236U publication Critical patent/CN213915236U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Cleaning In General (AREA)

Abstract

The utility model discloses a clean stacking machine of plank, comprising a base plate, top one side of bottom plate is connected with the collecting box, be connected with the conveying board between riser and the collecting box, both sides all are connected with the support frame around the top of backup pad, and are connected with the conveyer belt between the opposite face of two support frames, the one end of conveyer belt is connected with first hang plate, the one end of support frame is connected with the cleaning box jointly, and the lower extreme and the backup pad fixed connection of cleaning box, the lower extreme of cleaning box is connected with the third hang plate, open on the top of backup pad has the perforation, and the lower extreme of third hang plate is connected with fenestrate one end, the both ends of cleaning box are connected with the mobile device jointly, and the mobile device runs through the cleaning box. The utility model discloses it is easy and simple to handle, through the clean case that sets up, can make this clean sign indicating number put the machine clean effect better, also can avoid the plank to break away from clean position when clean, improved this clean sign indicating number and put the machine stability and practicality.

Description

Clean stacking machine for wood boards
Technical Field
The utility model relates to a technical field is put things in good order to the clean plank specifically is a clean plank of putting things in good order machine.
Background
In the process of producing and processing the wood board, chips often appear on the surface of the wood board, in order to guarantee the subsequent processing of the wood board, a wood board cleaning and stacking machine is needed to be used for cleaning the chips, the structure of the currently used wood board cleaning and stacking machine is too simple, the cleaning stacking machine has poor effect when cleaning the wood board, the wood board is easy to be separated from the cleaning position due to high-pressure airflow, so that the practicability and the stability of the whole cleaning stacking machine are not high, and the cleaning stacking machine is not comprehensive enough when cleaning the wood board, can not remove the scraps at different positions of the wood board, reduces the flexibility of the whole cleaning stacking machine when cleaning the wood board, the cleaning stacking machine is not convenient and tidy enough when the wood boards are stacked, the automation degree is not high, and the working strength of workers is increased, so that the wood board cleaning stacking machine is provided for solving the problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a clean stacking machine of plank to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: a wood board cleaning stacking machine comprises a bottom plate, wherein one side of the top end of the bottom plate is connected with a collecting box, the other side of the top end of the bottom plate is connected with a vertical plate, a conveying plate is connected between the vertical plate and the collecting box, the top ends of the collecting box, the vertical plate and the conveying plate are jointly connected with a supporting plate, the front side and the rear side of the top end of the supporting plate are respectively connected with a supporting frame, a conveying belt is connected between opposite surfaces of the two supporting frames, one end of the conveying belt is connected with a first inclined plate, one end of each supporting frame is jointly connected with a cleaning box, and the lower end of each cleaning box is fixedly connected with the supporting plate;
the cleaning box comprises a box body, a fan is installed on the wall of the lower box of the box body, one end of the first inclined plate extends into the box body and is connected with a placing plate, limiting plates are connected to two sides of the top end of the placing plate, soft pads are installed on the lower surfaces of two sides of each limiting plate, a ventilation net is installed in the middle of the placing plate, one end, far away from the first inclined plate, of the placing plate is connected with a second inclined plate, a through hole is formed in the lower end of the box body, and the lower end of the second inclined plate is connected with one end of the through hole;
the lower extreme of clean case is connected with the third hang plate, open the top of backup pad has the perforation, and the lower extreme of third hang plate is connected with fenestrate one end, the both ends of clean case are connected with the mobile device jointly, and the mobile device runs through the clean case.
As a preferred technical scheme of the utility model, the top of box is connected with the pump case, install the air pump on the lower inner wall of pump case, the lower extreme of air pump is connected with the outlet duct, and the lower extreme of outlet duct runs through pump case and box and passes the mobile device, the lower extreme of outlet duct is connected with the breather pipe, the lower extreme of breather pipe is connected with a plurality of jet-propelled head.
As a preferred technical scheme of the utility model, the mobile device includes the stock, the stock is provided with two, and the shifting chute has all been opened to the opposite face of two stocks, all install driving motor on one side inner wall of stock, driving motor's output all is connected with the threaded rod, the movable block has all been cup jointed to the surface of threaded rod, the one end of movable block all is connected with the connecting rod, and the opposite face of two connecting rods runs through two shifting chutes respectively and be connected with the movable plate jointly, open the round hole that has a perfect understanding from top to bottom, two on the top of movable plate the stock respectively with the both ends fixed connection of box, and the both ends of box all opened the elongated slot that the cooperation shifting chute used, two the connecting rod runs through the box through two elongated slots respectively.
As a preferred technical scheme of the utility model, the collecting box includes the casing, the one end swing joint of casing has the apron, the inferior valve wall mounting of casing has two fixed knots, and the lower inner wall of casing is connected through two fixed knots and is held the frame, the one end of conveying board runs through the casing and extends to and holds in the frame, the lower extreme and the bottom plate fixed connection of casing.
As a preferred technical scheme of the utility model, the outlet duct is the hose, and the one end of outlet duct is provided with the valve, the lower extreme of outlet duct runs through the movable plate through the round hole.
As a preferred technical scheme of the utility model, it is linked together to perforate with the inside of conveying board, and the one end that conveying board runs through the collecting box is the fretwork form.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the utility model discloses a set up the clean case, fan wherein can cooperate a plurality of jet-propelled heads to clean the plank on placing the board for this clean sign indicating number puts the clean effect of machine better, and place two limiting plates and the cushion that set up on the board and can effectively avoid the plank to appear breaking away from the condition of placing the board when clean, improved whole clean sign indicating number and put the stability and the practicality of machine.
2. Through setting up the mobile device, connecting rod wherein can drive the movable plate under the effect of driving motor, threaded rod and movable block and carry out the back-and-forth movement to make the adjustment of a plurality of air jets position around can being convenient for, make the piece of plank different positions department can both be cleared, improved the flexibility of whole clean stacking machine.
3. Through setting up conveyer belt, a plurality of hang plate and conveying board and cooperating the frame that holds in the collecting box and use, can make the plank can be more convenient orderly be arranged under the frame that holds about being, effectual staff's working strength has been reduced after the cleanness.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the cleaning box of the present invention;
FIG. 3 is a schematic view of the mobile device of the present invention and a cross-sectional view of the long rod;
fig. 4 is a sectional view of the collecting box of the utility model.
In the figure: 1. a base plate; 2. a cleaning tank; 3. a mobile device; 4. a collection box; 5. a transfer plate; 6. perforating; 7. a third inclined plate; 8. a vertical plate; 9. a support plate; 10. a support frame; 11. a conveyor belt; 12. a first inclined plate; 21. a box body; 22. a fan; 23. a second inclined plate; 24. placing the plate; 25. an air outlet pipe; 26. a gas showerhead; 27. a breather pipe; 28. an air pump; 29. a pump box; 241. a soft cushion; 242. a limiting plate; 243. a ventilation net; 31. a long rod; 32. a connecting rod; 33. a moving groove; 34. moving the plate; 35. a circular hole; 311. a drive motor; 312. a moving block; 313. a threaded rod; 41. a housing; 42. a fixing buckle; 43. a containing frame; 44. and (7) a cover plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: a wood board cleaning stacking machine comprises a bottom plate 1, wherein a collecting box 4 is connected to one side of the top end of the bottom plate 1, a vertical plate 8 is connected to the other side of the top end of the bottom plate 1, a conveying plate 5 is connected between the vertical plate 8 and the collecting box 4, a supporting plate 9 is connected to the top ends of the collecting box 4, the vertical plate 8 and the conveying plate 5 together, supporting frames 10 are connected to the front side and the rear side of the top end of the supporting plate 9 respectively, a conveying belt 11 is connected between the opposite surfaces of the two supporting frames 10, a control switch is arranged at the top end of each supporting frame 10, a first inclined plate 12 is connected to one end of each conveying belt 11, a cleaning box 2 is connected to one end of each supporting frame 10 together, a door plate is movably connected to one end of each cleaning box 2, the lower end of each cleaning box 2 is fixedly connected with the supporting plate 9, each cleaning box 2 comprises a box body 21, a fan 22 is installed on the lower box wall of the box body 21, one end of each first inclined plate 12 extends into the box body 21 and is connected with a placing plate 24, the two sides of the top end of the placing plate 24 are both connected with a limiting plate 242, the lower surfaces of the two sides of the limiting plate 242 are both provided with soft pads 241, the middle part of the placing plate 24 is provided with a ventilation net 243, one end of the placing plate 24 far away from the first inclined plate 12 is connected with a second inclined plate 23, the lower end of the box body 21 is provided with a through hole, the lower end of the second inclined plate 23 is connected with one end of the through hole, the lower end of the cleaning box 2 is connected with a third inclined plate 7, the top end of the supporting plate 9 is provided with a perforation 6, the lower end of the third inclined plate 7 is connected with one end of the perforation 6, the two ends of the cleaning box 2 are jointly connected with a moving device 3, the moving device 3 penetrates through the cleaning box 2, when in use, the whole cleaning stacking machine is placed in a designated working area through the bottom plate 1, then, the wood plates are placed on the conveyor belt 11 between the two supporting frames 10 at equal intervals, the control switch is started again to enable the conveyor belt 11 to drive the wood plates to move towards the first inclined plate 12, afterwards, the plank will enter into clean case 2 and fall into and place on board 24 under the effect of first hang plate 12, at this moment start fan 22 and make its wind that blows out clean the lower surface of plank through ventilation net 243, and when the plank received the effect of wind and moved upwards, can be spacing by two limiting plates 242 and cushion 241, avoid the plank to appear breaking away from the condition of placing board 24, a plank can follow first hang plate 12 landing and promote the preceding plank and move to second hang plate 23 after the clean back is accomplished to the preceding plank, at this moment under the effect of second hang plate 23, the plank after the clean can enter into third hang plate 7 through the through-hole, and enter into perforation 6 through third hang plate 7, then the plank after the clean will enter into conveying plate 5, the rethread conveying plate 5 enters into and collects the incasement 4.
Referring to fig. 1-4, the top end of the box body 21 is connected with a pump box 29, an air pump 28 is installed on the lower inner wall of the pump box 29, the lower end of the air pump 28 is connected with an air outlet pipe 25, the lower end of the air outlet pipe 25 penetrates through the pump box 29 and the box body 21 and penetrates through the moving device 3, the lower end of the air outlet pipe 25 is connected with a vent pipe 27, the lower end of the vent pipe 27 is connected with a plurality of air nozzles 26, when the air pump 28 in the pump box 29 is started and the valve is opened while the fan 22 is started, at this time, air flow enters the vent pipe 27 through the air outlet pipe 25 and is ejected from the plurality of air nozzles 26 to clean the upper surface of the wood board on the placing board 24.
Referring to fig. 1-4, the moving device 3 includes two long rods 31, two long rods 31 are provided, and the opposing surfaces of the two long rods 31 are respectively provided with a moving slot 33, the inner wall of one side of the long rod 31 is provided with a driving motor 311, the output end of the driving motor 311 is connected with a threaded rod 313, the outer surface of the threaded rod 313 is respectively sleeved with a moving block 312, one end of the moving block 312 is connected with a connecting rod 32, the opposing surfaces of the two connecting rods 32 respectively penetrate through the two moving slots 33 and are commonly connected with a moving plate 34, the top end of the moving plate 34 is provided with a circular hole 35 which is vertically penetrated, the two long rods 31 are respectively fixedly connected with the two ends of the box body 21, and the two ends of the box body 21 are respectively provided with a long slot which is matched with the moving slot 33, the two connecting rods 32 respectively penetrate through the box body 21 through the two long slots, when the air nozzle 26 needs to move back and forth to remove debris at different positions of the wood board, the driving motors 311 in the two long rods 31 in the moving device 3 can be started, so that the two driving motors 311 respectively drive the two threaded rods 313 to rotate, the two moving blocks 312 respectively start to move along the two threaded rods 313, the two connecting rods 32 respectively start to drive the moving plate 34 to move back and forth in the range of the two moving grooves 33 and the long grooves at the two ends of the box body 21, and at this time, the air nozzle 26 starts to move back and forth to clean the chips at different positions of the wood board under the cooperation of the circular hole 35.
Referring to fig. 1-4, the collecting box 4 includes a housing 41, a cover plate 44 is movably connected to one end of the housing 41, two fixing fasteners 42 are installed on a lower wall of the housing 41, a containing frame 43 is connected to a lower inner wall of the housing 41 through the two fixing fasteners 42, one end of the conveying plate 5 penetrates through the housing 41 and extends into the containing frame 43, a lower end of the housing 41 is fixedly connected to the bottom plate 1, when the cleaned wood board is moved into the housing 41 from the conveying plate 5, the wood board falls into the containing frame 43 and is vertically arranged in the containing frame 43, and when the containing frame 43 is fully collected, the cover plate 44 at one end of the housing 41 can be driven and the containing frame 43 can be lifted upwards to separate the lower end of the containing frame from the two fixing fasteners 42, so that the containing frame 43 can be moved out of the housing 41.
Referring to fig. 1-4, the air outlet tube 25 is a flexible tube, and one end of the air outlet tube 25 is provided with a valve, and the lower end of the air outlet tube 25 penetrates through the moving plate 34 through the circular hole 35, so that the moving plate 34 can better drive the air nozzle 26 to move back and forth.
Referring to fig. 1-4, the through hole 6 is connected to the inside of the conveying plate 5, and one end of the conveying plate 5 penetrating through the collecting box 4 is hollowed out, so that the wood board in the conveying plate 5 can smoothly fall into the containing frame 43.
The working principle is as follows: when the wood cleaning and stacking machine is used, the whole cleaning and stacking machine is placed in a designated working area through the bottom plate 1, then wood plates are placed on the conveyor belt 11 between the two support frames 10 at equal intervals, the control switch is started to enable the conveyor belt 11 to drive the wood plates to move towards the first inclined plate 12, then the wood plates can enter the cleaning box 2 under the action of the first inclined plate 12 and fall onto the placing plate 24, at the moment, the fan 22 is started to enable air blown out by the fan to clean the lower surfaces of the wood plates through the ventilation net 243, when the wood plates move upwards under the action of wind force, the wood plates are limited by the two limiting plates 242 and the soft pads 241, the situation that the wood plates are separated from the placing plate 24 is avoided, when the fan 22 is started, the air pump 28 in the pump box 29 is started, the valve is opened, at the moment, air flow enters the ventilation pipe 27 through the air outlet pipe 25 and is sprayed out from the plurality of air nozzles 26 to clean the upper surfaces of the wood plates on the placing plate 24, when the air nozzle 26 needs to move back and forth to clean the chips at different positions of the wood board, the driving motors 311 in the two long rods 31 in the moving device 3 can be started, so that the two driving motors 311 respectively drive the two threaded rods 313 to rotate, so that the two moving blocks 312 respectively start to move along the two threaded rods 313, so that the two connecting rods 32 respectively start to drive the moving plate 34 to move back and forth in the two moving grooves 33 and the long grooves at the two ends of the box body 21, at this time, the air nozzle 26 starts to move back and forth to clean the chips at different positions of the wood board under the coordination of the circular holes 35, after the previous wood board is cleaned, the next wood board slides down from the first inclined plate 12 and pushes the previous wood board to move onto the second inclined plate 23, at this time, under the action of the second inclined plate 23, the cleaned wood board enters the third inclined plate 7 through the through hole, and enter into perforation 6 through third hang plate 7, then the plank after the cleaning will enter into conveying board 5, and then pass through conveying board 5 and enter into collection box 4, will fall into and hold the frame 43 after the plank after accomplishing the cleaning moves to the casing 41 in from conveying board 5 to become and arrange from top to bottom in holding the frame 43, after holding the frame 43 and collecting to fill, can drive the apron 44 of casing 41 one end and upwards lift and hold the frame 43 and make its lower extreme and two fixing button 42 separation can shift out the frame 43 of holding and move out casing 41.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (6)

1. The utility model provides a clean stacking machine of plank, includes bottom plate (1), its characterized in that: one side of the top end of the bottom plate (1) is connected with a collecting box (4), the other side of the top end of the bottom plate (1) is connected with a vertical plate (8), a conveying plate (5) is connected between the vertical plate (8) and the collecting box (4), the top ends of the collecting box (4), the vertical plate (8) and the conveying plate (5) are jointly connected with a supporting plate (9), supporting frames (10) are connected to the front side and the rear side of the top end of the supporting plate (9), a conveying belt (11) is connected between opposite surfaces of the two supporting frames (10), one end of the conveying belt (11) is connected with a first inclined plate (12), one end of each supporting frame (10) is jointly connected with a cleaning box (2), and the lower end of each cleaning box (2) is fixedly connected with the supporting plate (9);
the cleaning box (2) comprises a box body (21), a fan (22) is installed on the lower box wall of the box body (21), one end of a first inclined plate (12) extends into the box body (21) and is connected with a placing plate (24), limiting plates (242) are connected to two sides of the top end of the placing plate (24), cushions (241) are installed on the lower surfaces of two sides of each limiting plate (242), a ventilation net (243) is installed in the middle of the placing plate (24), one end, far away from the first inclined plate (12), of the placing plate (24) is connected with a second inclined plate (23), a through hole is formed in the lower end of the box body (21), and the lower end of the second inclined plate (23) is connected with one end of the through hole;
the lower extreme of clean case (2) is connected with third hang plate (7), open the top of backup pad (9) and have perforation (6), and the lower extreme of third hang plate (7) is connected with the one end of perforation (6), the both ends of clean case (2) are connected with mobile device (3) jointly, and mobile device (3) run through clean case (2).
2. The clean racking machine of claim 1, wherein: the top of box (21) is connected with pump box (29), install air pump (28) on the lower inner wall of pump box (29), the lower extreme of air pump (28) is connected with outlet duct (25), and the lower extreme of outlet duct (25) runs through pump box (29) and box (21) and passes mobile device (3), the lower extreme of outlet duct (25) is connected with breather pipe (27), the lower extreme of breather pipe (27) is connected with the jet-propelled head (26) of a plurality of.
3. The clean racking machine of claim 1, wherein: the moving device (3) comprises two long rods (31), moving grooves (33) are formed in opposite surfaces of the two long rods (31), driving motors (311) are installed on inner walls of one sides of the long rods (31), output ends of the driving motors (311) are connected with threaded rods (313), moving blocks (312) are sleeved on outer surfaces of the threaded rods (313), connecting rods (32) are connected to one ends of the moving blocks (312), opposite surfaces of the two connecting rods (32) penetrate through the two moving grooves (33) respectively and are connected with a moving plate (34) together, round holes (35) which are communicated up and down are formed in the top end of the moving plate (34), the two long rods (31) are fixedly connected with two ends of a box body (21) respectively, and long grooves matched with the moving grooves (33) are formed in two ends of the box body (21), the two connecting rods (32) penetrate through the box body (21) through two long grooves respectively.
4. The clean racking machine of claim 1, wherein: the collecting box (4) comprises a shell (41), a cover plate (44) is movably connected to one end of the shell (41), two fixing buckles (42) are mounted on the wall of the lower shell of the shell (41), the lower inner wall of the shell (41) is connected with a containing frame (43) through the two fixing buckles (42), one end of the conveying plate (5) penetrates through the shell (41) and extends into the containing frame (43), and the lower end of the shell (41) is fixedly connected with the bottom plate (1).
5. The clean racking machine of claim 2, wherein: the air outlet pipe (25) is a hose, a valve is arranged at one end of the air outlet pipe (25), and the lower end of the air outlet pipe (25) penetrates through the moving plate (34) through a round hole (35).
6. The clean racking machine of claim 1, wherein: the through hole (6) is communicated with the inside of the conveying plate (5), and one end, penetrating through the collecting box (4), of the conveying plate (5) is hollowed out.
CN202022285205.2U 2020-10-14 2020-10-14 Clean stacking machine for wood boards Expired - Fee Related CN213915236U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022285205.2U CN213915236U (en) 2020-10-14 2020-10-14 Clean stacking machine for wood boards

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022285205.2U CN213915236U (en) 2020-10-14 2020-10-14 Clean stacking machine for wood boards

Publications (1)

Publication Number Publication Date
CN213915236U true CN213915236U (en) 2021-08-10

Family

ID=77162329

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202022285205.2U Expired - Fee Related CN213915236U (en) 2020-10-14 2020-10-14 Clean stacking machine for wood boards

Country Status (1)

Country Link
CN (1) CN213915236U (en)

Similar Documents

Publication Publication Date Title
CN208740067U (en) A kind of fruit cleans stripping and slicing robot automatically
CN213915236U (en) Clean stacking machine for wood boards
CN211615301U (en) Production calcium silicate is environmental protection cutting device for board
CN208289698U (en) Furniture polishing dust suction workplace
CN216801306U (en) Pole piece dust collector
CN216181458U (en) Die sinking cleaning and purging mechanism of die
CN215013163U (en) Hairtail segmenting device
CN214053922U (en) Band sawing machine for separating cutting waste
CN208469185U (en) A kind of Bag Making Machine waste cleaning device
CN206812145U (en) A kind of cutting machine chip removal device
CN207369990U (en) One seed shrimp cleans conveying device
CN211761830U (en) Automatic root cutting and peeling machine for green Chinese onions
CN114960162B (en) Tailoring equipment for zipper cloth belt production
CN211760831U (en) Gantry water jet cutting edge trimmer for producing calcium silicate board
CN213226486U (en) Cutter cleaning mechanism for pineapple slicing
CN213971622U (en) Double-sided planer for processing bamboo flattening plate
CN216465105U (en) Log band saw platform is used in panel production
CN109092699A (en) A kind of detection of garlic and prepare mashed garlic device and method
CN216064398U (en) Fragment of brick belt cleaning device for breaker
CN219337394U (en) Cleaning machine
CN214187474U (en) Fruit vegetables cutting device based on steam jet
CN216323837U (en) A quick dust collecting equipment for circuit board processing
CN216886002U (en) Wooden door surface pattern carving equipment
CN216575773U (en) Water gap trimming and cutting machine with material taking mechanical arm
CN209920624U (en) Cutting device is used in western-style pastry box 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

Granted publication date: 20210810