CN207726343U - A kind of glass falls plate roller transport device - Google Patents
A kind of glass falls plate roller transport device Download PDFInfo
- Publication number
- CN207726343U CN207726343U CN201721843685.1U CN201721843685U CN207726343U CN 207726343 U CN207726343 U CN 207726343U CN 201721843685 U CN201721843685 U CN 201721843685U CN 207726343 U CN207726343 U CN 207726343U
- Authority
- CN
- China
- Prior art keywords
- plate roller
- way
- drive link
- falls
- rollgang
- 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
Links
- 239000011521 glass Substances 0.000 title claims abstract description 34
- 230000005540 biological transmission Effects 0.000 claims abstract description 20
- 238000009434 installation Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000009471 action Effects 0.000 abstract description 5
- 230000008439 repair process Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 6
- 239000002699 waste material Substances 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 230000004044 response Effects 0.000 description 5
- 239000012634 fragment Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000006063 cullet Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005816 glass manufacturing process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Landscapes
- Rollers For Roller Conveyors For Transfer (AREA)
Abstract
The utility model discloses a kind of glass and falls plate roller transport device, is related to glass manufacturing apparatus technical field.The device includes the first rollgang, falls plate roller-way and the second rollgang, and in the oblique roller-way processed of the second rollgang inclined downward setting, falls plate roller-way and one end of the first rollgang is provided with first rotating shaft, electric machine assembly；Transmission component, the driving force of electric machine assembly is passed to by transmission component falls plate roller-way, makes to fall plate roller-way around first rotating shaft along swing.The quick action of the device, service clearance are big and setting is at top, and repair is more convenient, and acts and more stablize, and apparatus structure is simple, and reliability is high.
Description
Technical field
The utility model is related to glass manufacturing apparatus technical fields more particularly to a kind of glass to fall plate roller transport device.
Background technology
In Improving Glass Manufacturing Processes, glass tape needs to pass through these fragments or waste product when fried plate occur or waste product occur
It falls plate roller transmission and enters cullet machine.The main line size (plate width direction) of general glass producing line is 3-6 meters, falls the length of plate roller-way
Degree is 2 meters or so.During normal production, it is horizontal with main line transmission roller channel to fall plate roller-way, non-defective unit is transmitted to rear process and is processed；
When there is fragment or waste product, falls plate roller-way front end whereabouts certain distance and be connected with tilting roller-way, waste product is transmitted to cullet machine
Carry out broken recycling.
In the prior art, the transport devices such as the vertical jacking cylinder of plate roller-way lower part installation, crank mainly are being fallen, realized
It falls the liter of plate roller-way, fall, therefore, the response speed of system acting is determined by the response speed of cylinder.Under normal circumstances, cylinder is straight
It connects jacking and falls time of plate roller-way and need 3-5 second, be unable to meet production requirement of the line to rapidity, it is easy to the glass in front of causing
The non-timely processing of glass plate material, the plank at rear have been conveyed through the accident for carrying out and causing collision.Meanwhile cylinder is mounted on and falls plate roller
Below road, narrow space, without service clearance, and the mode of single fulcrum jacking, it is unfavorable for the whole smooth motion of main line.
Utility model content
In view of the above-mentioned problems, the utility model proposes a kind of glass to fall plate roller transport device, the movement speed of the device
Soon, service clearance is big and setting is at top, and repair is more convenient, and acts and more stablize, and apparatus structure is simple, and reliability is high.
The utility model uses following technical scheme：
A kind of glass falls plate roller transport device, including：First rollgang falls plate roller-way and the second rollgang, with
And the oblique roller-way processed in the setting of the second rollgang inclined downward, it falls plate roller-way and one end of the first rollgang is provided with the
One shaft further includes：Electric machine assembly；Transmission component, the driving force of electric machine assembly is passed to by transmission component falls plate roller-way, makes
Plate roller-way is fallen to swing around first rotating shaft.
Further include rack as a kind of preferred embodiment of the utility model, rack includes crossbeam and column, electric machine assembly and
Transmission component is arranged on crossbeam, upright supports crossbeam.
As a kind of preferred embodiment of the utility model, at least two root posts, which are arranged vertically at, falls plate roller-way,
Two rollgangs and the tiltedly both sides of roller-way processed, crossbeam are fixed on the top of column in the horizontal direction.
As a kind of preferred embodiment of the utility model, transmission component includes horizontally disposed first drive link, sets vertically
The second drive link set, and the interconnecting piece of the first drive link and the second drive link is connected, electric machine assembly is matched with the first drive link
It closes, the driving force of electric machine assembly is passed into the first drive link, the first drive link transmits drive force to second by interconnecting piece
Drive link, the second drive link and falls the second shaft that plate roller-way be arranged close to second rollgang one end and is rotatablely connected, and drives the
Two rollgangs are vertically swung.
As a kind of preferred embodiment of the utility model, electric machine assembly includes the snail of motor and the installation of motor output shaft end
Bar is provided with worm gear on the first drive link.
As a kind of preferred embodiment of the utility model, interconnecting piece includes third drive link and third shaft, third transmission
Bar, which is vertically fixed on the both ends of the second drive link, third drive link and the second drive link and is rotated by the both ends of third shaft, to be connected
It connects.
As a kind of preferred embodiment of the utility model, the second rollgang bottom surface is additionally provided with support device, when falling plate
When roller-way is horizontal, support device is stretched out, and support falls plate roller-way.
As a kind of preferred embodiment of the utility model, support device is cylinder or hydraulic cylinder.
As a kind of preferred embodiment of the utility model, support device is at least provided with one.
The beneficial effects of the utility model are：
(1) glass of the utility model falls plate roller transport device, by the way that link and drive component is arranged so that driving
The speed for falling plate roller-way greatly improves.
(2) glass of the utility model falls plate roller transport device, by the way that rack construction is arranged, and by link and driving
Component is arranged on the crossbeam of rack, increases the service clearance of whole device, and the action of simultaneity factor is more stablized.
Description of the drawings
Fig. 1 is that glass provided by the utility model falls plate roller transport device in the side for falling plate roller-way and being under horizontality
View.
Fig. 2 is that glass provided by the utility model falls plate roller transport device in the side for falling plate roller-way and being under heeling condition
View.
Fig. 3 is the front view that glass provided by the utility model falls plate roller transport device.
In figure：1, the first rollgang；
2, plate roller-way is fallen；21, first rotating shaft；22, the second shaft；
3, the second rollgang；
4, oblique roller-way processed；
5, electric machine assembly；51, motor；52, worm screw；
6, transmission component；61, the first drive link；611, worm gear；62, the second drive link；63, interconnecting piece；631, third passes
Lever；632, third shaft；
7, rack；71, crossbeam；72, column；
8, support device；
100, glass board material.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and examples.It is understood that herein
Described specific embodiment is used only for explaining the utility model, rather than the restriction to the utility model.It further needs exist for
It is bright, it illustrates only for ease of description, in attached drawing and the relevant part of the utility model rather than entire infrastructure.
As shown in Figure 1, falling plate roller transport device for glass provided by the utility model is falling plate roller-way in horizontal
Side view under state is illustrated in figure 3 the front view of device, as can be seen that whole device is mainly by first from Fig. 1 and Fig. 3
Rollgang 1 falls plate roller-way 2, the second rollgang 3, tiltedly roller-way 4 processed, electric machine assembly 5, transmission component 6, rack 7 and support dress
Set 8 compositions.
It is under horizontality from figure 1 it appears that falling plate roller-way 2 at this time, as during normal production, glass board material
100 along in conplane first rollgang 1, fall plate roller-way 2 and the second rollgang 3 is transmitted, after entering
Continuous process.As shown in Fig. 2, for glass provided by the utility model fall plate roller transport device fall plate roller-way be in incline
When fragment or waste product occur in side view under ramp-like state, i.e. production line, the inclination of plate roller-way 2 is fallen, and be in same with oblique roller-way 4 processed
Plane, glass board material 100 along the first rollgang 1, fall plate roller-way 2 and tiltedly roller-way 4 processed be transmitted, waste product is transmitted to broken
Glass machine carries out broken recycling.
In the prior art, in order to complete above-mentioned action, cylinder, cylinder is arranged in the lower section usually at 22 position of the second shaft
It stretches out or retracts and be used as transport device, control falls plate roller-way 2 and swung around first rotating shaft 21.This set action response speed by
The response speed of cylinder determines.Under normal circumstances, the time that the direct jacking of cylinder falls plate roller-way needs 3-5 seconds, cannot be satisfied life
Requirement of the producing line to rapidity, it is easy to lead to the 100 non-timely processing of glass board material in front, the glass board material 100 at rear is
Carry out and cause the accident of collision through being conveyed through.Meanwhile cylinder is mounted on and falls below plate roller-way, narrow space, without service clearance,
And the mode of single fulcrum jacking, it is unfavorable for the whole smooth motion of main line.
In the present invention, it can be seen from figure 3 that on the whole, rack 7 includes horizontally disposed crossbeam 71 and is vertically arranged
Column 72.Specifically, column 72 is provided with four, and 2 are separately positioned on for one group and are falling plate roller-way 2, the second rollgang 3
The tiltedly both sides of roller-way 4 processed are connected by plank between two groups of columns 72, and crossbeam 71 is fixed on column 72 in the horizontal direction
Top, 72 support beam 71 of column, i.e. rack 7 form the structure type of a portal frame, across the entire production line.Meanwhile by
Make service clearance bigger, installation and maintenance more convenient across the structure type of the entire production line in rack 7.
As seen from Figure 1, it falls plate roller-way 2 and one end of first rollgang 1 is provided with first rotating shaft 21, fall plate roller-way 2
Second rollgang, 3 one end is provided with the second shaft 22, first rotating shaft 21 and the second shaft 22 both pass through and fall plate roller-way 2.
In practical work process, first rotating shaft 21 is fixed, falls plate roller-way 2 and is swung around first rotating shaft 21, and then realizes and fall plate roller
Variation of the road 2 on horizontal and two positions of inclination.
As shown in Figure 3, the second drive link 62 that transmission component 6 includes horizontally disposed first drive link 61, is vertically arranged,
And the interconnecting piece 63 of connection the first drive link 61 and the second drive link 62.Electric machine assembly 5 includes that motor 51 and motor 51 export
The worm screw 52 of shaft end installation.Motor 51 is fixed on vertically downwards on crossbeam 71, and the centre in the first drive link 61
Position.First drive link 61 is horizontally disposed, and worm gear 611 is provided on the first drive link 61, by the cooperation of worm and wormwheel structure,
The driving force of motor 51 is passed into the first drive link 61, the first drive link 61 is driven to rotate in the horizontal direction.It is predictable
It is that motor 51 and the setting angle of the first drive link 61 do not limit, meanwhile, pass through between motor 51 and the first drive link 61
The mode that worm and wormwheel structure transmits driving force does not also limit, such as gear drive, magnetic coupling transmission, will as long as meeting
The turning moment of motor 51 passes to the first drive link 61, so that the first drive link 61 is rotated along horizontal axis direction, exists
In the protection domain of the application.
As shown in Figure 3, there are two the settings of the second drive link 62, it is arranged vertically at 61 liang of the first drive link respectively
End, the other end of the second drive link 62 and the second shaft 22 for falling plate roller-way 2 are rotatablely connected.Interconnecting piece 63 includes third drive link
631 and third shaft 632, there are two the settings of third drive link 631, is respectively and vertically fixed at the both ends of the second drive link 62, the
Three drive links 631 and the second drive link 62 are rotatablely connected by the both ends of third shaft 632.
The setting summarized above with respect to transmission component 6 can show that the driving force of electric machine assembly 5 passes to the first drive link
61, the first drive link 61 transmits drive force to the second drive link 62 by interconnecting piece 63, the second drive link 62 with fall plate roller-way 2
The rotation connection of the second shaft 22, driving falls plate roller-way 2 and vertically swings.Rotation of the plate roller-way 2 along first rotating shaft 21 is fallen,
Show as the motion state from Fig. 1 to Fig. 2.
Meanwhile driving falls the power that plate roller-way 2 is vertically swung and is provided jointly by two the second drive links 62, with
It is compared from below to falling the scheme that plate roller-way 2 exerts a force by single cylinder in the prior art, two the second drive links 62 are from falling
The scheme that the both sides of plate roller-way 2 exert a force so that the stress for falling plate roller-way 2 is more reasonable, and movement is more stablized.Meanwhile
Power source to falling the force of plate roller-way 2 is motor 51, compared with the scheme to be exerted a force in the prior art by cylinder, the sound of motor 51
It answers speed faster, one-off can be completed in 0.5 second, the response speed of this system is made to accelerate.
Predictably, the application transmission component 6 is to carry out transmitting driving force using link mechanism, but as long as being to adopt
Motor 51 is used to be driven as power source, by the way of the transmission of other driving forces, as gear drive, magnetic coupling are driven
Deng within the scope of protection of this application.
Preferably, it is also provided with support device 8 in 3 bottom surface of the second rollgang, support device 8 is cylinder or hydraulic pressure
Cylinder, at least provided with one, the effect of support device 8 is embodied in when falling plate roller-way 2 and being horizontal, provide one it is additional
Support force keeps the stability for falling plate roller-way 2.Specifically, it is horizontal as shown in Figure 1, falling plate roller-way 2, support dress
8 stretchings are set, are supported to falling plate roller-way 2；It being at obliquity as shown in Fig. 2, falling plate roller-way 2, support device 8 is retracted,
The action for falling plate roller-way 2 is not stopped.
Note that above are only the preferred embodiment and institute's application technology principle of the utility model.Those skilled in the art's meeting
Understand, the utility model is not limited to specific embodiment here, can carry out for a person skilled in the art various apparent
Change, readjust and substitutes without departing from the scope of protection of the utility model.Therefore, although by above example to this
Utility model is described in further detail, but the utility model is not limited only to above example, is not departing from this reality
Can also include other more equivalent embodiments in the case of with novel design, and the scope of the utility model is by appended power
Sharp claimed range determines.
Claims (9)
1. a kind of glass falls plate roller transport device, including：First rollgang (1) falls plate roller-way (2) and the second rollgang
(3), and in the oblique roller-way (4) processed that the second rollgang (3) inclined downward is arranged, the plate roller-way (2) that falls is close to institute
The one end for stating the first rollgang (1) is provided with first rotating shaft (21), which is characterized in that further includes：
Electric machine assembly (5)；
Transmission component (6), the driving force of the electric machine assembly (5) are passed to by the transmission component (6) and described fall plate roller-way
(2), the plate roller-way (2) that falls is made to be swung around the first rotating shaft (21).
2. glass according to claim 1 falls plate roller transport device, which is characterized in that further include rack (7), the machine
Frame (7) includes crossbeam (71) and column (72), and the electric machine assembly (5) and the transmission component (6) are arranged in the crossbeam
(71) on, the column (72) supports the crossbeam (71).
3. glass according to claim 2 falls plate roller transport device, which is characterized in that at least two columns (72)
It is arranged vertically at the both sides for falling plate roller-way (2), the second rollgang (3) and oblique roller-way (4) processed, the crossbeam
(71) it is fixed on the top of the column (72) in the horizontal direction.
4. glass according to claim 1 falls plate roller transport device, which is characterized in that the transmission component (6) includes
Horizontally disposed first drive link (61), the second drive link (62) being vertically arranged, and the first drive link of connection (61) and the
The interconnecting piece (63) of two drive links (62), the electric machine assembly (5) coordinates with first drive link (61), by electric machine assembly
(5) driving force passes to the first drive link (61), and the first drive link (61) is transmitted driving force by the interconnecting piece (63)
The second drive link (62), second drive link (62) is given to be set close to the second rollgang (3) one end with the plate roller-way (2) that falls
The second shaft (22) rotation connection set, the second rollgang of driving (3) are vertically swung.
5. glass according to claim 4 falls plate roller transport device, which is characterized in that the electric machine assembly (5) includes
The worm screw (52) of motor (51) and the installation of the motor (51) output shaft end, is provided with worm gear on first drive link (61)
(611)。
6. glass according to claim 4 falls plate roller transport device, which is characterized in that the interconnecting piece (63) includes the
Three drive links (631) and third shaft (632), the third drive link (631) are vertically fixed on second drive link (62)
Both ends, the both ends rotation that the third drive link (631) and second drive link (62) pass through third shaft (632) connects
It connects.
7. glass according to claim 1 falls plate roller transport device, which is characterized in that second rollgang (3)
Bottom surface is additionally provided with support device (8), when it is described fall plate roller-way (2) and be horizontal when, the support device (8) is stretched out,
Plate roller-way (2) is fallen described in support.
8. glass according to claim 7 falls plate roller transport device, which is characterized in that the support device (8) is gas
Cylinder or hydraulic cylinder.
9. glass according to claim 8 falls plate roller transport device, which is characterized in that the support device (8) is at least
There are one settings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721843685.1U CN207726343U (en) | 2017-12-26 | 2017-12-26 | A kind of glass falls plate roller transport device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721843685.1U CN207726343U (en) | 2017-12-26 | 2017-12-26 | A kind of glass falls plate roller transport device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207726343U true CN207726343U (en) | 2018-08-14 |
Family
ID=63086313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721843685.1U Expired - Fee Related CN207726343U (en) | 2017-12-26 | 2017-12-26 | A kind of glass falls plate roller transport device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207726343U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110451265A (en) * | 2019-09-11 | 2019-11-15 | 中国建材国际工程集团有限公司 | A kind of emergency method for supporting of support device |
| CN110817380A (en) * | 2019-11-13 | 2020-02-21 | 亚杰科技（江苏）有限公司 | One set of product conveying equipment |
| CN111674826A (en) * | 2020-06-12 | 2020-09-18 | 江铃汽车股份有限公司 | A breakable conveying tunnel |
| CN113242812A (en) * | 2018-12-21 | 2021-08-10 | 株式会社大福 | Article carrier |
| CN114206754A (en) * | 2019-08-20 | 2022-03-18 | 株式会社大福 | Carrying conveyor |
| CN115140555A (en) * | 2022-08-01 | 2022-10-04 | 青岛融合新材料科技有限公司 | Automatic deviation-correcting device for ultrathin electronic glass |
| CN115745390A (en) * | 2022-11-30 | 2023-03-07 | 蚌埠中建材信息显示材料有限公司 | Plate glass falling device |
| CN115744296A (en) * | 2022-10-19 | 2023-03-07 | 江苏宏芯亿泰智能装备有限公司 | Roller way transmission device and glass substrate conveying line |
-
2017
- 2017-12-26 CN CN201721843685.1U patent/CN207726343U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113242812B (en) * | 2018-12-21 | 2023-05-23 | 株式会社大福 | Article carrier |
| CN113242812A (en) * | 2018-12-21 | 2021-08-10 | 株式会社大福 | Article carrier |
| CN114206754B (en) * | 2019-08-20 | 2024-05-14 | 株式会社大福 | Conveying conveyor |
| CN114206754A (en) * | 2019-08-20 | 2022-03-18 | 株式会社大福 | Carrying conveyor |
| CN110451265B (en) * | 2019-09-11 | 2024-04-26 | 中国建材国际工程集团有限公司 | Emergency supporting method of supporting device |
| CN110451265A (en) * | 2019-09-11 | 2019-11-15 | 中国建材国际工程集团有限公司 | A kind of emergency method for supporting of support device |
| CN110817380B (en) * | 2019-11-13 | 2021-05-25 | 亚杰科技（江苏）有限公司 | One set of product conveying equipment |
| CN110817380A (en) * | 2019-11-13 | 2020-02-21 | 亚杰科技（江苏）有限公司 | One set of product conveying equipment |
| CN111674826A (en) * | 2020-06-12 | 2020-09-18 | 江铃汽车股份有限公司 | A breakable conveying tunnel |
| CN115140555A (en) * | 2022-08-01 | 2022-10-04 | 青岛融合新材料科技有限公司 | Automatic deviation-correcting device for ultrathin electronic glass |
| CN115744296A (en) * | 2022-10-19 | 2023-03-07 | 江苏宏芯亿泰智能装备有限公司 | Roller way transmission device and glass substrate conveying line |
| CN115745390A (en) * | 2022-11-30 | 2023-03-07 | 蚌埠中建材信息显示材料有限公司 | Plate glass falling device |
| CN115745390B (en) * | 2022-11-30 | 2024-05-03 | 蚌埠中建材信息显示材料有限公司 | Plate glass falling device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207726343U (en) | A kind of glass falls plate roller transport device | |
| CN104942183B (en) | Front detection straightening device of wire feeding mechanism | |
| CN105059896A (en) | Lifting type belt plate fetching machine | |
| CN201634375U (en) | Optical fiber preformed rod delivery wagon | |
| CN107127023A (en) | A kind of reverse twin-roll breaker | |
| CN206584956U (en) | A kind of Lan Moqujing die bonds mechanism | |
| CN207807815U (en) | A kind of experiment banding machine | |
| CN204917140U (en) | Trigger is got to over -and -under type belt | |
| CN107934000A (en) | The bottle status transition conversion equipment of bottled oral liquid device of full automatic packaging | |
| CN107961858A (en) | A kind of blanking type ore Multi-stage crushing plant | |
| CN207217578U (en) | A kind of LED encapsulation point glue equipment | |
| CN207447620U (en) | A kind of laser cutting device | |
| CN202616592U (en) | Multipurpose high-efficient wire stripping machine | |
| CN106000911B (en) | One kind is used for nut blank heating full-automatic device | |
| CN109261256B (en) | Two-stage reducing type crushing device | |
| CN207205583U (en) | Highly reliable wire automatically peeling head and offline laser equipment | |
| CN200957361Y (en) | A pulverizer with adjustable gap between hammer and sieve | |
| CN203211929U (en) | Flat belt conveyance scramming device | |
| CN207465577U (en) | A kind of silicon chip production slicing apparatus | |
| CN205709147U (en) | A kind of take turns the wire stripper drive mechanism that same power, center, the most collinear footpath are constant more | |
| CN204710738U (en) | A kind of glass tube outer diameter sorting unit | |
| CN206779348U (en) | Cable counts shearing equipment | |
| CN116078954A (en) | Building iron wire cutting device | |
| CN208345202U (en) | A kind of funneling spillplate | |
| CN201614344U (en) | Glass-ceramic online multi-knife oblique cross-cutting machine |
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: 20180814 Termination date: 20211226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |