CN209077556U - A kind of limit punching die - Google Patents
A kind of limit punching die Download PDFInfo
- Publication number
- CN209077556U CN209077556U CN201821519967.0U CN201821519967U CN209077556U CN 209077556 U CN209077556 U CN 209077556U CN 201821519967 U CN201821519967 U CN 201821519967U CN 209077556 U CN209077556 U CN 209077556U
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- Prior art keywords
- plate
- fixed
- punch
- pin
- concave template
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Abstract
The utility model provides a kind of limit punching die, including upper die holder, the lower surface of the upper die holder is fixed with upper die plate, the lower surface of the upper die plate is fixed with punch retainer, blanking punch is equipped in the punch retainer, the lower surface of the punch retainer is connected with slide-and-guide plate, offers formed punch groove on the slide-and-guide plate；The upper surface of the lower mold backing plate is connected with concave template, blanking punching is offered on the concave template, fixed pin is installed in the dowel hole, removable pin is installed in the dowel hole, the removable pin is located in the lower mold backing plate by movable component, corresponding with the blanking punching to offer blanking channel；The utility model structure is simple, fixed pin can play guiding role to plate, and removable pin can play high-precision position-limiting action to the plate processed under the mating reaction of movable component, prevent plate from shifting phenomenon, the precision for improving punching, guarantees the quality of product.
Description
Technical field
The utility model relates to technical field of mold, specially a kind of limit punching die.
Background technique
Machining production in usually need aperture on the metal material or slot, generally use mach mode into
Row, heavy workload, working efficiency is low, and dangerous.It is processed using piercing die, production efficiency, and product can be improved
Quality is stablized, safety and stability.
But there are some defects in existing punching die, are punched out when needing the workpiece of punching to be placed in lower die
When, work plate to be processed is easy to happen offset, haves the defects that the limit accuracy of workpiece is not high, leads to punching precision not
Height influences the quality of product, production cost is caused to increase.
Summary of the invention
The purpose of this utility model provides a kind of limit punching die, to solve that plate to be processed exists in the prior art
The not high plate of limit accuracy shifts defect, the problem for causing punching precision not high.
To solve the above problems, the utility model provides the following technical solutions: a kind of limit punching die, including upper die holder
And lower die holder, the lower surface of the upper die holder are fixed with upper die plate, the lower surface of the upper die plate is fixed with punch-pin and fixes
Plate, the punch retainer is interior to be equipped with blanking punch, and the lower surface of the punch retainer is connected with sliding by fixing bolt
Guide plate offers formed punch groove on the slide-and-guide plate, and the blanking punch is located in formed punch groove；
The upper surface of the lower die holder is fixed with lower mold backing plate, and the upper surface of the lower mold backing plate is connected with concave template, institute
It states and offers blanking punching on concave template, the two sides of the blanking punching offer positioning pin mounting hole, positioning pin described in side
Fixed pin is installed in mounting hole, removable pin, the activity are equipped with by disassembly component in positioning pin mounting hole described in the other side
The bottom end of pin is equipped with movable component, and the movable component is located in the concave template.
Preferably, it is equipped with outer bush above the upper die holder, is plugged with guide post, the bottom end of the guide post in the outer bush
It is fixed with lower die holder, the fixing bolt is symmetricly set on the two sides of the blanking punch, pressure is socketed on the fixing bolt
One end of contracting spring, the compressed spring is contacted with slide-and-guide plate, and the other end is mounted in the punch retainer, described convex
Mould fixed plate two sides are symmetrically fixed with cavity plate guide post, and the cavity plate guide post is connect by interior guide sleeve with the slide-and-guide plate, institute
The bottom end for stating cavity plate guide post is fixed with pushing block, and the lower mold backing plate and the concave template offer concave template guide groove, institute
It states concave template guide groove and the cavity plate guide post cooperates.
Preferably, the lower mold backing plate side offers cavity, and the bottom of the cavity is equipped with rubber slab, the activity group
Part includes rotor plate, and the rotor plate is equipped with turning set, is socketed with rotation axis in the turning set, the rotation axis is fixed on
In the cavity, one end of the rotor plate is fixed with mandril, and the top of the mandril is contacted with the bottom of the removable pin, separately
One end is fixed with gravity block, and the gravity block top is contacted with the pushing block bottom end.
Preferably, open up fluted on the concave template, the disassembly component includes stripper, is opened up on the stripper
There is pilot hole, removable pin is plugged in the pilot hole, multiple counter sinks are offered on the stripper, the stripper passes through
Hexagon socket head cap screw is fixed in the groove, and the hexagon socket head cap screw is located in the counter sink.
Preferably, the pilot hole is correspondingly arranged with the positioning pin mounting hole, is fixed with protruding block on the removable pin,
Push spring is connected on the protruding block, the push spring is plugged on the removable pin, the end of the push spring
With the stripper tip contact, the diameter of the pilot hole is slightly larger than the diameter of positioning pin mounting hole, and is less than the push
The diameter of spring.
Preferably, the two sides of the formed punch groove symmetrically offer locating slot, the notch of the locating slot and the positioning
Pin mounting hole is correspondingly arranged, and the size of the clearance fit between the positioning pin mounting hole and plate is smaller to be can be ignored.
Compared with the prior art, the utility model has the beneficial effects that plate be punched out on automatic punch production line plus
Working hour first moves the side of plate along fixed pin, and fixed pin plays guiding role to plate to be processed, and upper die holder is downward
When mobile, the formed punch groove of slide-and-guide plate plays guiding role to blanking punch, the fixed pushing block in the bottom end of cavity plate guide post,
It extend into concave template guide groove, through the rotor plate of turning set installation on the rotating shaft under the promotion of pushing block, pushing block
It will be pushed away under gravity block, the top of the mandril of the other end is contacted with the bottom of the removable pin, removable pin is ejected upwards and plate
Another contact aside, the notch and positioning pin mounting hole of the locating slot opened up on slide-and-guide plate cooperate；This is practical new
Type structure is simple, and fixed pin can play guiding role to plate, and removable pin can be to just under the mating reaction of movable component
High-precision position-limiting action is played in the plate of processing, prevents plate from shifting phenomenon, improves the precision of punching, guarantees product
Quality.
It is to be understood that above-mentioned general description and following specific embodiments are merely illustrative and illustrative, not
The range to be advocated of the utility model can be limited.
Detailed description of the invention
Following attached drawing is the part of specification of the utility model, and the example for depicting the utility model is implemented
Example, appended attached drawing are used to illustrate the principles of the present invention together with the description of specification.
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the schematic diagram of the section structure of the utility model；
Fig. 3 is the movable component structural schematic diagram of the utility model；
Fig. 4 is the partial enlarged view of the utility model A.
Description of symbols:
1- die shank, 2- upper die holder, 3- upper die plate, 4- punch retainer, 5- blanking punch, 6- slide-and-guide plate, 7- are fixed
Position slot, 8- concave template, 8a- groove, 9- lower mold backing plate, 9a- cavity, 10- fixed pin, 11- positioning pin mounting hole, 12- blanking punching
Hole, 13- blanking channel, 14- push spring, 15- removable pin, 15a- protruding block, 16- movable component, 16a- rotor plate, the top 16b-
Bar, 16c- rotation axis, 16d- turning set, 16e- gravity block, 17- lower die holder, 18- concave template guide groove, 19- pushing block, 20- punching
Head groove, 21- cavity plate guide post, 22- shock-absorbing spring, 23- outer bush, 24- guide post, 25- fixing bolt, 26- plate, 27- rubber
Plate, 28- dismantle component, 28a- stripper, 28b- pilot hole, 28c- counter sink, 28d- hexagon socket head cap screw.
Specific embodiment
The various exemplary embodiment of the utility model is now described in detail, which is not considered as practical to this
Novel limitation, and it is understood as the more detailed description of some aspects to the utility model, characteristic and embodiment.
It, can be to the specific implementation of the utility model specification without departing substantially from the scope of the utility model or spirit
Mode does a variety of improvements and changes, this will be apparent to those skilled in the art.By the specification of the utility model
Obtained other embodiments are apparent obtain for technical personnel.Present specification and embodiment are only exemplary
's.
Refering to attached drawing 1-4, the utility model provides a kind of limit punching die, including upper die holder 2 and lower die holder 17, described
The lower surface of upper die holder 2 is fixed with upper die plate 3, and the lower surface of the upper die plate 3 is fixed with punch retainer 4, described convex
Blanking punch 5 is equipped in mould fixed plate 4, the lower surface of the punch retainer 4 is connected with sliding sliding by fixing bolt 25
Guide plate 6 offers formed punch groove 20 on the sliding slide-and-guide plate 6, and the blanking punch 5 is located in formed punch groove 20；
The upper surface of the lower die holder 17 is fixed with lower mold backing plate 9, and the upper surface of the lower mold backing plate 9 is connected with concave template
8, blanking punching 12 is offered on the concave template 8, and the two sides of the blanking punching 12 offer positioning pin mounting hole 11, side
Fixed pin 10 is installed in the positioning pin mounting hole 11, is set in positioning pin mounting hole 11 described in the other side by dismantling component 28
There is removable pin 15, the bottom end of the removable pin 15 is equipped with movable component 16, and the movable component 16 is located at the concave template 8
It is interior.
In the present embodiment, refering to attached drawing 2, outer bush 23, grafting in the outer bush 23 are equipped with above the upper die holder 2
There is guide post 24, the bottom end of the guide post 24 is fixed with lower die holder 17, and the fixing bolt 25 is symmetricly set on the blanking punch 5
Two sides, compressed spring 22, one end of the compressed spring 22 and sliding slide-and-guide plate 6 are socketed on the fixing bolt 25
Contact, the other end are mounted in the punch retainer 4, and 4 two sides of punch retainer are symmetrically fixed with cavity plate guide post 21, institute
It states cavity plate guide post 21 to connect by interior guide sleeve with the sliding slide-and-guide plate 6, the bottom end of the cavity plate guide post 21, which is fixed with, to push away
Motion block 19, the lower mold backing plate 9 and the concave template 8 offer concave template guide groove 18, the concave template guide groove 18 with
The cavity plate guide post 21 cooperates, and compressed spring 22 is socketed on the fixing bolt 25, compressed spring 22 is in sliding slide-and-guide
Deformation occurs when the contact with lower die of plate 6, the reaction force of compressed spring 22, enhances the pressure that plate 10 is subject to, so that
Punching press effect is more obvious；Reduce the labor intensity of sliding slide-and-guide plate 6, the cavity plate guide post 21 and concave template guide groove 18
Cooperation, further increase the cooperation precision of upper die and lower die.
In embodiment, refering to attached drawing 3,9 side of lower mold backing plate offers cavity 9a, and the bottom of the cavity 9a is set
There is rubber slab 27, the movable component 16 includes rotor plate 16a, and the rotor plate 16a is equipped with turning set 16d, the rotation
It is socketed with rotation axis 16c in set 16d, the rotation axis 16c is fixed in the cavity 9a, and one end of the rotor plate 16a is solid
Surely there is mandril 16b, the top of the mandril 16b is contacted with the bottom of the removable pin 15, and the other end is fixed with gravity block 16e,
The top the gravity block 16e is contacted with 19 bottom end of pushing block, and the fixed pushing block 19 in the bottom end of cavity plate guide post 21 is extend into
In concave template guide groove 18, the rotor plate 16a on rotation axis 16c is mounted under the promotion of pushing block 19 by turning set 16d,
Pushing block will push away under gravity block 16e, and the top of the mandril 16b of the other end is contacted with the bottom of the removable pin 15, by removable pin
15 eject another contact aside of positioning pin mounting hole 11 and plate upwards, are socketed in 15 push spring 14 of removable pin and generate
Compressing force.
In the present embodiment, refering to attached drawing 4, fluted 8a is opened up on the concave template 8, the disassembly component 28 includes tearing open
Plate 28a is unloaded, pilot hole 28b is offered on the stripper 28a, removable pin 15, the disassembly are plugged in the pilot hole 28b
Multiple counter sink 28c are offered on plate 28a, the stripper 28a is fixed in the groove 8a by hexagon socket head cap screw 28d,
The hexagon socket head cap screw 28d is located in the counter sink 28c, and removable pin 15 is plugged in the positioning pin mounting hole 11, will
Stripper 28a is mounted in the groove 8a by hexagon socket head cap screw 28d, and the head of removable pin 15 is located at the pilot hole 28b
Interior, the top of push spring 14 is contacted with the upper end pilot hole 28b, and the setting of the disassembly component 28 is convenient to removable pin 15
Dismounting and change, prevent removable pin 15 work long hours generate abrasion, influence punching limit precision.
In the present embodiment, refering to attached drawing 2, the pilot hole 28b is correspondingly arranged with the positioning pin mounting hole 11, described
It is fixed with protruding block 15a on removable pin 15, push spring 14,14 grafting of push spring are connected on the protruding block 15a
On the removable pin 15, the end of the push spring 14 and the stripper 28a tip contact, the pilot hole 28b's
Diameter is slightly larger than the diameter of positioning pin mounting hole 11, and is less than the diameter of the push spring 14；The two of the formed punch groove 20
Side symmetrically offers locating slot 7, and the notch of the locating slot 7 is correspondingly arranged with the positioning pin mounting hole 11, the positioning pin
The size of clearance fit between mounting hole 11 and plate 26 is ignored, and prevents removable pin 15 from rubbing when stretching to the generation of plate 26
It wipes, generates plate 26 and tilt phenomenon, influence the punching precision of plate 26, the push spring 14 being socketed on the removable pin 15,
It can play a role in promoting to removable pin 15.
The working principle of the utility model, plate 26 are placed on concave template 8, are contacted with the side of fixed pin 10, will be lived
Dynamic pin 15 is plugged in positioning pin mounting hole 11 by stripper 28a, and press machine applies pressure, 4 band of punch retainer to die shank
Dynamic cavity plate guide post 21 is moved downwardly in concave template guide groove 18, and the pushing block 19 of 21 bottom end of cavity plate guide post will push rotor plate
The gravity block 16e of the one end 16a is moved downward, and the mandril 16b tilting of the other end ejects removable pin 15, removable pin 15 and plate 26
Another side contacts, fixed pin 10 simultaneously limits plate 10 with removable pin 15, meanwhile, the blanking on punch retainer 4
Formed punch 5 stretches out formed punch groove 20 and is punched out processing to plate 10；When carrying out continuous punching to plate 10, upper die holder 2 is upward
It is mobile, drive cavity plate guide post 21 to move upwards, pushing block 19 is separated with gravity block 16e, and removable pin 15 restores in push spring 14
The effect of power retracts in positioning pin mounting hole 11, and the plate of machined mistake moves forward, and repeats the above steps, carries out next punching
Hole effect, the blanking swept away are fallen from blanking channel 13.
In conclusion the utility model has the beneficial effects that plate on automatic punch production line carry out punching processing when, first
The side of plate is moved along fixed pin, fixed pin plays guiding role to plate to be processed, when upper die holder moves down,
The formed punch groove of slide-and-guide plate plays guiding role to blanking punch, and the fixed pushing block in the bottom end of cavity plate guide post is extend into
In concave template guide groove, through turning set installation rotor plate on the rotating shaft under the promotion of pushing block, pushing block is by gravity
It is pushed away under block, the top of the mandril of the other end is contacted with the bottom of the removable pin, removable pin is ejected upwards another with plate
Contact aside, the notch and positioning pin mounting hole of the locating slot opened up on slide-and-guide plate cooperate；The utility model structure
Simply, fixed pin can play guiding role to plate, and removable pin can be to processing under the mating reaction of movable component
Plate play high-precision position-limiting action, prevent plate from shifting phenomenon, improve the precision of punching, guarantee the matter of product
Amount；
The convenient dismounting and change to removable pin of setting of the disassembly component, prevents removable pin in the generation that works long hours
Abrasion influences the precision of punching limit, and the size of the clearance fit between the positioning pin mounting hole and plate is smaller to neglect
Slightly disregard, friction generated to plate when preventing removable pin flexible, generates plate and tilt phenomenon, influence the punching precision of plate,
The push spring being socketed on the removable pin can play a role in promoting to removable pin.
Deformation occurs in the contact with lower die of slide-and-guide plate for compressed spring, the reaction force of compressed spring, enhancing
The pressure that plate is subject to, so that punching press effect is more obvious；Reduce slide-and-guide plate labor intensity, the cavity plate guide post and
The cooperation of concave template guide groove further increases the cooperation precision of upper die and lower die；The push spring being socketed on the removable pin,
It can play a role in promoting to removable pin, prevent removable pin from generating the phenomenon that gets stuck, shrink removable pin convenient and efficient, while cavity
Interior rubber slab can reduce friction and impact of the movable component to lower mold backing plate, reduce the abrasion of lower mold backing plate.
The above descriptions are merely exemplary embodiments of the present utility model, in the design that does not depart from the utility model and
Under the premise of principle, the equivalent changes and modifications that any those skilled in the art is made should belong to the utility model guarantor
The range of shield.
Claims (6)
1. a kind of limit punching die, including upper die holder (2) and lower die holder (17), which is characterized in that under the upper die holder (2)
Surface is fixed with upper die plate (3), and the lower surface of the upper die plate (3) is fixed with punch retainer (4), and the punch-pin is fixed
Blanking punch (5) are equipped in plate (4), the lower surface of the punch retainer (4) is connected with sliding by fixing bolt (25) and leads
It to plate (6), is offered formed punch groove (20) on the slide-and-guide plate (6), it is recessed that the punching pin of the blanking punch (5) is located at formed punch
In slot (20)；The upper surface of the lower die holder (17) is fixed with lower mold backing plate (9), the upper surface connection of the lower mold backing plate (9)
Have concave template (8), offered blanking punching (12) on the concave template (8), the two sides of the blanking punching (12) offer fixed
Mounting hole (11) are sold in position, are equipped with fixed pin (10) in positioning pin mounting hole (11) described in side, the peace of positioning pin described in the other side
It fills in hole (11) and removable pin (15) is equipped with by disassembly component (28), the bottom end of the removable pin (15) is equipped with movable component
(16), the movable component (16) is located in the concave template (8).
2. a kind of limit punching die according to claim 1, which is characterized in that be equipped with above the upper die holder (2) and lead outside
It covers (23), is plugged with guide post (24) in the outer bush (23), the bottom end of the guide post (24) is fixed with lower die holder (17), described
Fixing bolt (25) is symmetricly set on the two sides of the blanking punch (5), is socketed with compressed spring on the fixing bolt (25)
(22), one end of the compressed spring (22) is contacted with slide-and-guide plate (6), and the other end is mounted on the punch retainer (4)
Interior, punch retainer (4) two sides are symmetrically fixed with cavity plate guide post (21), and the cavity plate guide post (21) passes through interior guide sleeve and institute
State slide-and-guide plate (6) connection, the bottom end of the cavity plate guide post (21) is fixed with pushing block (19), the lower mold backing plate (9) with
The concave template (8) offers concave template guide groove (18), the concave template guide groove (18) and the cavity plate guide post (21)
Cooperation.
3. a kind of limit punching die according to claim 2, which is characterized in that lower mold backing plate (9) side offers
The bottom of cavity (9a), the cavity (9a) is equipped with rubber slab (27), and the movable component (16) includes rotor plate (16a), institute
Rotor plate (16a) is stated equipped with turning set (16d), the turning set (16d) is interior to be socketed with rotation axis (16c), the rotation axis
(16c) is fixed in the cavity (9a), and one end of the rotor plate (16a) is fixed with mandril (16b), the mandril (16b)
Top contacted with the bottom of the removable pin (15), the other end is fixed with gravity block (16e), gravity block (16e) top
It is contacted with the pushing block (19) bottom end.
4. a kind of limit punching die according to claim 1, which is characterized in that opened up on the concave template (8) fluted
(8a), the disassembly component (28) include stripper (28a), are offered pilot hole (28b) on the stripper (28a), described
It is plugged with removable pin (15) in pilot hole (28b), offers multiple counter sinks (28c), the disassembly on the stripper (28a)
Plate (28a) is fixed in the groove (8a) by hexagon socket head cap screw (28d), and the hexagon socket head cap screw (28d) is located at described heavy
In head bore (28c).
5. a kind of limit punching die according to claim 4, which is characterized in that the pilot hole (28b) and the positioning
Pin mounting hole (11) is correspondingly arranged, and is fixed with protruding block (15a) on the removable pin (15), is connected on the protruding block (15a)
Have push spring (14), the push spring (14) is plugged on the removable pin (15), the end of the push spring (14)
With the stripper (28a) tip contact, the diameter of the pilot hole (28b) is slightly larger than the diameter of positioning pin mounting hole (11),
And it is less than the diameter of the push spring (14).
6. a kind of limit punching die according to claim 1, which is characterized in that the two sides of the formed punch groove (20) are symmetrical
It offers locating slot (7), the notch of the locating slot (7) is correspondingly arranged with the positioning pin mounting hole (11), the positioning pin
The size of clearance fit between mounting hole (11) and plate (26) is smaller to be can be ignored.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821519967.0U CN209077556U (en) | 2018-09-18 | 2018-09-18 | A kind of limit punching die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821519967.0U CN209077556U (en) | 2018-09-18 | 2018-09-18 | A kind of limit punching die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209077556U true CN209077556U (en) | 2019-07-09 |
Family
ID=67116796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821519967.0U Expired - Fee Related CN209077556U (en) | 2018-09-18 | 2018-09-18 | A kind of limit punching die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209077556U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110614326A (en) * | 2019-10-12 | 2019-12-27 | 广东泰吉鑫机械有限公司 | Novel double-ejector rod mechanism for die spotting machine |
| CN111570612A (en) * | 2020-05-22 | 2020-08-25 | 金奕鹏 | Punching positioning mechanism for machining fastener |
| CN111822585A (en) * | 2020-07-22 | 2020-10-27 | 芜湖市夯福机械模具有限公司 | Automobile part stamping forming die capable of achieving accurate positioning |
| CN112355158A (en) * | 2020-11-18 | 2021-02-12 | 无锡飞展模具制造有限公司 | Raw and other materials initial feeding positioner |
| CN114535389A (en) * | 2022-03-22 | 2022-05-27 | 芜湖市夯福机械模具有限公司 | Punching machine for automobile part production and use method thereof |
| CN114833265A (en) * | 2022-04-29 | 2022-08-02 | 河南钢之韵自动化设备科技有限公司 | Metal strip leveling and feeding system for cold punching processing |
-
2018
- 2018-09-18 CN CN201821519967.0U patent/CN209077556U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110614326A (en) * | 2019-10-12 | 2019-12-27 | 广东泰吉鑫机械有限公司 | Novel double-ejector rod mechanism for die spotting machine |
| CN111570612A (en) * | 2020-05-22 | 2020-08-25 | 金奕鹏 | Punching positioning mechanism for machining fastener |
| CN111822585A (en) * | 2020-07-22 | 2020-10-27 | 芜湖市夯福机械模具有限公司 | Automobile part stamping forming die capable of achieving accurate positioning |
| CN111822585B (en) * | 2020-07-22 | 2022-05-31 | 芜湖市夯福机械模具有限公司 | Automobile part stamping forming die capable of achieving accurate positioning |
| CN112355158A (en) * | 2020-11-18 | 2021-02-12 | 无锡飞展模具制造有限公司 | Raw and other materials initial feeding positioner |
| CN114535389A (en) * | 2022-03-22 | 2022-05-27 | 芜湖市夯福机械模具有限公司 | Punching machine for automobile part production and use method thereof |
| CN114535389B (en) * | 2022-03-22 | 2024-04-19 | 芜湖市夯福机械模具有限公司 | Punching machine for producing automobile parts and application method thereof |
| CN114833265A (en) * | 2022-04-29 | 2022-08-02 | 河南钢之韵自动化设备科技有限公司 | Metal strip leveling and feeding system for cold punching processing |
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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: 20190709 Termination date: 20210918 |
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| CF01 | Termination of patent right due to non-payment of annual fee |