CN212445885U - Scraper device of open mill - Google Patents
Scraper device of open mill Download PDFInfo
- Publication number
- CN212445885U CN212445885U CN202020869804.6U CN202020869804U CN212445885U CN 212445885 U CN212445885 U CN 212445885U CN 202020869804 U CN202020869804 U CN 202020869804U CN 212445885 U CN212445885 U CN 212445885U
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- sliding block
- front roller
- sliding
- cutter
- roller
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Abstract
The utility model discloses a scraper device of an open mill, which relates to the technical field of open mills, and the key points of the technical proposal are that the scraper device comprises a support frame, a front roller and a rear roller, wherein the support frame is fixedly connected with two power motors, the scraper device also comprises fixed blocks respectively arranged at the two ends of the front roller, the two fixed blocks are both fixedly connected on the support frame, a sliding block sliding along the axial direction of the front roller is arranged above the front roller, a support column with the axial direction parallel to the axial direction of the front roller is arranged between the two fixed blocks, the support column is fixedly connected with the two fixed blocks, the support column runs through the sliding block, and one fixed block is provided with a sliding driving component for driving the sliding block to slide on the; the bottom of the sliding block is provided with a cutter used for cutting the sizing material stuck on the front roller; the utility model solves the problem that the cutting knife accidentally injures the operator due to the safety protection device of the existing open mill; through setting up cutter, sliding block and drive assembly, avoid the cutter accidental injury operating personnel.
Description
Technical Field
The utility model belongs to the technical field of the technique of mill and specifically relates to a scraper device of mill is related to.
Background
At present, an open mill is called an open rubber mixing machine for short, and a rubber mill is used for preparing plasticated rubber and mixed rubber or is used for carrying out hot mixing and discharging rubber mixing machinery with an exposed roller.
The prior Chinese utility model patent document with the publication number of grant CN104708728A discloses a safety protection device for an open mill, wherein a protective net is arranged at the rear of the open mill, an installation door is arranged on the protective net, a safety bolt is arranged on the installation door, an emergency stop kick switch is arranged below the open mill, the emergency stop kick switch is provided with a trigger point and is connected with a limit switch A, a safety push rod is arranged at the middle part of a front roller, a limit switch B is arranged behind the safety push rod and is fixed with the safety push rod, a vision sensor A and a vision sensor B are arranged at two side parts above the open mill, the two sensors are both right opposite to the junction of the front roller and a rear roller, when in use, the safety relay monitors the accessed normally closed point, the personal safety of an operator under emergency can be ensured, when the vision sensor detects that an object with a color different from that a rubber material extruding area enters a detection area, the machine can be stopped to alarm immediately, and the safety of the staff is guaranteed to the maximum extent.
The above prior art solutions have the following drawbacks: placing rubber between a front roller and a rear roller, wherein the rubber can be adhered to one front roller in the process of rotating the front roller and the rear roller, an operator needs to hold a cutting knife to cut the rubber, the cutting knife is placed on an open mill body after cutting, then the operator takes the rubber from the front roller and places the rubber again in the gap between the front roller and the rear roller, the rubber is continuously processed, the cutting knife is easy to place at the edge position of the open mill body when the operator places the cutting knife, the hand of the operator is easy to touch the cutting knife, so that the cutting knife falls off from the open mill body, and the operator is easy to accidentally injure the operator; therefore, the safety protection device of the existing open mill has the problem that the operator easily touches the cutting knife by mistake, so that the cutting knife falls off from the open mill body, and the operator is injured by mistake.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a scraper device of mill through setting up cutter, sliding block and drive assembly, is convenient for cut the sizing material of adhesion on the running roller in the front, avoids operating personnel to bump the cutter at the in-process mistake of collecting the sizing material, makes the cutter drop from the mill body to avoid the cutter to accidentally injure operating personnel.
The above object of the present invention is achieved by the following technical solutions: a scraper device of an open mill comprises a support frame, a front roller and a rear roller, wherein the axis direction of the front roller and the axis direction of the rear roller are positioned on the same horizontal plane, the support frame is fixedly connected with two power motors which are respectively used for driving the front roller and the rear roller to rotate on the support frame, the scraper device also comprises fixed blocks which are respectively arranged at two ends of the front roller, the two fixed blocks are both fixedly connected on the support frame, a sliding block which slides along the axis direction of the front roller is arranged above the front roller, a support column which is parallel to the axis direction of the front roller in the axis direction is arranged between the two fixed blocks, the support column is fixedly connected with the two fixed blocks, the support column penetrates through the sliding block, and one fixed; the bottom of the sliding block is provided with a cutter used for cutting the sizing material adhered on the front roller.
By adopting the technical scheme, in an initial state, the cutter is positioned at the position, close to one end, of the front roller, the two power motors respectively drive the front roller and the rear roller to rotate, the rotating speed of the front roller is higher than that of the rear roller, when an operator places a sizing material in a gap between the front roller and the rear roller, the front roller and the rear roller extrude the sizing material, the sizing material can be adhered to the front roller, at the moment, the driving assembly drives the sliding block to slide towards the direction close to the sizing material, the sliding block drives the cutter to slide towards the direction close to the sizing material, the cutter is in contact with the sizing material, the cutter cuts the sizing material, the operator collects the sizing material after cutting, and in the process of collecting the sizing material, the cutter is positioned at the position, close; consequently, through setting up cutter, sliding block and drive assembly, be convenient for cut the sizing material of adhesion on the running roller in the front, avoid operating personnel to bump the cutter at the in-process mistake of collecting the sizing material, make the cutter drop from the mill body to avoid the cutter to accidentally injure operating personnel.
The present invention may be further configured in a preferred embodiment as: the driving assembly comprises a rotating screw rod and a driving motor, wherein the axis direction of the rotating screw rod is parallel to the axis direction of the support column, the output shaft of the driving motor is fixedly connected with one end of the rotating screw rod, the rotating screw rod penetrates through the two fixed blocks and is rotatably connected with the fixed blocks, the rotating screw rod is in threaded connection with the sliding blocks, and the driving motor is fixedly connected to one fixed block.
Through adopting above-mentioned technical scheme, driving motor drives and rotates the screw rod and rotate, rotates the screw rod and drives the sliding block and slide along the axis direction of rotating the screw rod on rotating screw rod and support column, through setting up driving motor and rotating the screw rod, is convenient for drive the sliding block and slide along the axis direction of support column on the support column.
The present invention may be further configured in a preferred embodiment as: the cutter sets to two, and two cutters are arranged along the axis direction of preceding running roller, and the blade of two cutters sets up towards the direction of keeping away from each other.
Through adopting above-mentioned technical scheme, under the initial condition, the sliding block is located the one end that the running roller is close to driving motor before, when needs cut the sizing material on the running roller before, driving motor drives the sliding block and slides towards the direction of keeping away from driving motor, the sliding block drives the cutter and slides towards the direction of keeping away from driving motor, the cutter cuts the sizing material on the running roller before, the sliding block is located the one end that driving motor was kept away from to the running roller before this moment, when changing next sizing material, when needing to cut next sizing material, through setting the cutter to two, it moves back initial position to need not driving motor drive sliding block, then cut the sizing material again, make the operation become convenient.
The present invention may be further configured in a preferred embodiment as: the bottom of sliding block has been seted up the sliding tray, is provided with the sliding plate in the sliding tray, and the sliding plate slides along vertical direction in the sliding tray, and two cutters all set up on the sliding plate.
Through adopting above-mentioned technical scheme, because the thickness of sizing material is different, then to the in-process of sizing material cutting, need adjust the distance between cutter bottom and the preceding running roller axis, guarantee that the cutter can cut the sizing material on the running roller before, through setting up sliding plate and sliding tray, the sliding plate slides along vertical direction in the sliding tray to be convenient for drive the cutter and cut the sizing material of different thickness.
The present invention may be further configured in a preferred embodiment as: the top of the sliding plate is rotatably connected with a lifting bolt, and the lifting bolt upwards penetrates through the sliding block and is in threaded connection with the sliding block.
Through adopting above-mentioned technical scheme, rotate the lifting bolt, the lifting bolt drives the sliding plate and slides along vertical direction in the sliding tray, thereby the sliding plate drives the cutter and slides along vertical direction, through setting up the lifting bolt, is convenient for drive the cutter through the sliding plate and slide along vertical direction.
The present invention may be further configured in a preferred embodiment as: the bottom of sliding plate is close to the position of two cutters and has all seted up the holding tank, and the holding tank runs through the sliding plate towards the direction of keeping away from each other, and two cutters are located two holding tanks respectively, rotate on the sliding block and are connected with two fixing bolt, and two fixing bolt's tip can run through the sliding block and be in the same place in two cutter threaded connection respectively.
Through adopting above-mentioned technical scheme, because the cutter uses the back for a long time, the blade point of cutter produces wearing and tearing easily, and the blade point sharpness step-down after the wearing and tearing to make cutting efficiency step-down, need change the cutter, unscrew fixing bolt, make the cutter break away from the holding tank, change new cutter, then fix new cutter on the sliding plate with fixing bolt, through setting up holding tank and fixing bolt, be convenient for dismantle and install the cutter.
The present invention may be further configured in a preferred embodiment as: both sides and the bottom of the sliding plate are coated with thin films.
Through adopting above-mentioned technical scheme, after the cutter is cleared up the sizing material of adhesion on the running roller in the front, the sizing material is located the position that the sliding plate is close to both sides, because the sizing material has viscidity, so the sizing material glues in the both sides of sliding plate easily, through setting up the film, the smooth non-viscose of one side of sliding plate is kept away from to the film to avoid the sizing material to glue on the sliding plate.
The present invention may be further configured in a preferred embodiment as: the plane of the bottom of the cutter is lower than the plane of the bottom of the film.
Through adopting above-mentioned technical scheme, through injecing the height of cutter bottom place plane and film bottom place plane, avoid sliding plate bottom and preceding running roller to contact, avoid the sliding plate to produce the resistance to the rotation of running roller before on the one hand, on the other hand avoids preceding running roller to produce the resistance to the slip of sliding plate.
To sum up, the utility model discloses a following at least one useful technological effect:
1. the utility model discloses be provided with the cutter, sliding block and drive assembly, under the initial condition, the cutter is located the position that the preceding running roller is close to one end, two motor power drive preceding running roller and back running roller rotate respectively, the rotational speed of preceding running roller is faster than the back running roller, when operating personnel place the sizing material in the clearance between preceding running roller and the back running roller, preceding running roller extrudees the sizing material with the back running roller, the sizing material can glue on the preceding running roller, at this moment, drive assembly drives the sliding block and slides towards the direction that is close to the sizing material, the sliding block drives the cutter and slides towards the direction that is close to the sizing material, the cutter contacts with the sizing material, the cutter cuts the sizing material, operating personnel collects the sizing material after the cutting, operating personnel is in the process of collecting the sizing material, the; therefore, by arranging the cutter, the sliding block and the driving assembly, the rubber material adhered to the front roller can be conveniently cut, the phenomenon that an operator accidentally touches the cutter in the rubber material collecting process is avoided, the cutter falls off the open mill body, and the phenomenon that the operator is accidentally injured by the cutter is avoided;
2. the utility model discloses set the cutter to two, under the initial condition, the sliding block is located the one end that the front roll is close to driving motor, when needs cut the sizing material on the front roll, driving motor drives the sliding block and slides towards the direction of keeping away from driving motor, the sliding block drives the cutter and slides towards the direction of keeping away from driving motor, the cutter cuts the sizing material on the front roll, the sliding block is located the one end that the driving motor was kept away from to the front roll this moment, when changing next sizing material, when needing to cut next sizing material, through setting the cutter to two, need not driving motor to drive the sliding block and move back to the initial position, then cut the sizing material again, make the operation convenient;
3. the utility model discloses be provided with holding tank and fixing bolt, because the cutter uses the back for a long time, the blade point of cutter produces wearing and tearing easily, the blade point sharpness step-down after wearing and tearing to make cutting efficiency step-down, need change the cutter, unscrew fixing bolt, make the cutter break away from the holding tank, change new cutter, then fix new cutter on the sliding plate with fixing bolt, through setting up holding tank and fixing bolt, be convenient for dismantle and install the cutter.
Drawings
FIG. 1 is a schematic diagram of the complete structure of the embodiment;
FIG. 2 is a cross-sectional view of an embodiment embodying a cutter;
fig. 3 is an enlarged view of a portion a of fig. 2.
In the figure: 1. a support frame; 11. a power motor; 12. a front roller; 13. a rear roller; 2. a fixed block; 21. a support pillar; 3. a drive assembly; 31. a drive motor; 32. rotating the screw; 4. a slider; 41. a sliding groove; 42. a sliding plate; 421. accommodating grooves; 422. a cutter; 423. fixing the bolt; 424. a lifting bolt; 425. a film.
Detailed Description
Example (b): referring to fig. 1 and 2, in order to disclose a scraper device of an open mill, the scraper device comprises a support frame 1 and a front roller 12 and a rear roller 13 which are horizontally arranged in the axis direction, the axis directions of the front roller 12 and the rear roller 13 are positioned on the same horizontal plane, one side of the support frame 1 is fixedly connected with two power motors 11, the front roller 12 and the rear roller 13 both penetrate through the support frame 1 along the axis direction of the front roller 12 and are rotatably connected with the support frame 1, and output shafts of the two power motors 11 are respectively fixedly connected with the front roller 12 and the rear roller 13; a cutter 422 sliding along the axial direction of the front roller 12 is arranged right above the front roller 12, and a driving component 3 is arranged at the top of the front roller 12.
In an initial state, the cutter 422 is located at one end of the front roller 12 close to the power motor 11, the two power motors 11 respectively drive the front roller 12 and the rear roller 13 to rotate, an operator places the rubber material on a gap between the front roller 12 and the rear roller, the front roller 12 and the rear roller 13 extrude the rubber material, the rubber material can be adhered to the front roller 12, at the moment, the driving assembly 3 drives the cutter 422 to slide towards a direction far away from the power motor 11, the cutter 422 cuts the rubber material, the operator collects the rubber material after cutting, and in the process of collecting the rubber material, the cutter 422 is located at a position, far away from one end of the power motor 11, of the front roller 12; avoid operating personnel to touch cutter 422 at the in-process mistake of collecting the sizing material, make cutter 422 drop from the mill body to avoid cutter 422 accidental injury operating personnel.
Referring to fig. 1 and 2, two ends of a front roller 12 are respectively provided with a fixed block 2, the fixed blocks 2 are fixedly connected to the top of a support frame 1, a driving component 3 is arranged on the fixed block 2 at one side of the two fixed blocks 2 close to a power motor 11, the two fixed blocks 2 are both positioned at the top of the front roller 12, a support column 21 with an axis direction parallel to the axis direction of the front roller 12 is arranged between the two fixed blocks 2, a sliding block 4 is arranged on the support column 21, the support column 21 penetrates through the sliding block 4, the sliding block 4 slides on the support column 21 along the axis direction of the support column 21, and a cutter 422 is arranged; the sliding block 4 drives the cutter 422 to slide on the supporting column 21 along the axial direction of the supporting column 21, and the supporting column 21 plays a role in guiding and supporting the sliding block 4.
Referring to fig. 1 and 2, the driving assembly 3 includes a rotating screw 32 whose axis direction is parallel to the axis direction of the supporting column 21 and a driving motor 31 whose output shaft is fixedly connected to one end of the rotating screw 32, the rotating screw 32 penetrates through the two fixed blocks 2 along the axis direction of the rotating screw 32 and is rotatably connected to the two fixed blocks 2, the rotating screw 32 penetrates through the sliding block 4 along the axis direction of the rotating screw 32 and is connected to the sliding block 4 by screw threads, and the driving motor 31 is fixed to the fixed block 2 near one side of the power motor 11; the driving assembly 3 rotates the screw 32 to drive the sliding block 4 to slide along the axial direction of the rotating screw 32.
Referring to fig. 1 and 2, a sliding groove 41 is formed in the bottom of the sliding block 4, the sliding groove 41 penetrates through the sliding block 4 along the axial direction of the support column 21, a sliding plate 42 which is vertically arranged is arranged in the sliding groove 41, a lifting bolt 424 which is vertically arranged is arranged at the top of the sliding plate 42, the lifting bolt 424 penetrates through the sliding block 4 along the vertical direction and is in threaded connection with the sliding block 4, the lifting bolt 424 is in rotational connection with the sliding plate 42, and the cutter 422 is arranged on the sliding plate 42.
The lifting bolt 424 is rotated, the lifting bolt 424 drives the sliding plate 42 to slide in the sliding groove 41 along the vertical direction, and the sliding plate 42 drives the cutter 422 to move along the vertical direction, so that the cutter 422 can conveniently cut rubber materials with different thicknesses.
Referring to fig. 1 and 2, the bottom of sliding plate 42 is close to the position at both ends and has all been seted up holding tank 421, two holding tanks 421 run through sliding plate 42 towards the direction of keeping away from each other, cutter 422 is provided with two, the direction that the blade orientation of two cutters 422 kept away from each other sets up, two cutters 422 are arranged along the axis direction of support column 21, two cutters 422 can be located two holding tanks 421 respectively, one side of sliding plate 42 is provided with two fixing bolt 423, the tip of two fixing bolt 423 all runs through sliding plate 42 and is in the same place with two cutter 422 threaded connection respectively, two fixing bolt 423 rotate with sliding plate 42 and link together.
After the cutter 422 is used for a long time, the cutter 422 needs to be replaced, the fixing bolt 423 is screwed off, the cutter 422 is replaced, the fixing bolt 423 is screwed down, and a new cutter 422 is fixed on the sliding plate 42; the arrangement of the two cutters 422 is convenient for cutting the sizing material, and the next sizing material adhered to the front roller 12 is cut without waiting for the cutters 422 to return to the initial position, so that the operation process is simple and convenient.
Referring to fig. 2 and 3, both sides of the sliding plate 42 and the bottom of the sliding plate 42 are coated with a thin film 425 to prevent the adhesive from adhering to the sliding plate 42; the plane of the bottom of the two cutting blades 422 is lower than the plane of the bottom of the film 425, so that the sliding plate 42 is prevented from contacting the front roller 12, the sliding plate 42 is prevented from generating resistance to the front roller 12, and the front roller 12 is prevented from generating resistance to the movement of the sliding plate 42.
The implementation principle of the embodiment is as follows: the two fixing bolts 423 are respectively rotated to fix the two cutters 422 on the sliding plate 42, the lifting bolt 424 is rotated to adjust the distance between the cutters 422 and the front roller 12 according to the thickness of the rubber material to be cut, in an initial state, the cutters 422 are located at one end of the front roller 12 close to the power motor 11, the two power motors 11 respectively drive the front roller 12 and the rear roller 13 to rotate, the rotation speed of the front roller 12 is higher than that of the rear roller 13, when an operator places the rubber material on a gap between the front roller 12 and the rear roller, the front roller 12 and the rear roller 13 extrude the rubber material, the rubber material can be adhered to the front roller 12, at the moment, the driving motor 31 drives the sliding block 4 to slide towards the direction far away from the power motor 11 by rotating the screw rod 32, the sliding block 4 drives the cutters 422 to slide towards the direction far away from the power motor 11, the cutters 422 are in contact with the rubber material, the rubber material is cut by, in the process of collecting the sizing material, the cutting knife 422 is positioned at the position of the front roller 12 close to the other end; avoid operating personnel to touch cutter 422 at the in-process mistake of collecting the sizing material, make cutter 422 drop from the mill body to avoid cutter 422 accidental injury operating personnel.
It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (8)
1. The utility model provides a scraper device of mill, includes that support frame (1) and axis direction are located preceding running roller (12) and back running roller (13) on same horizontal plane, the rigid coupling has two to be used for driving preceding running roller (12) and back running roller (13) respectively on support frame (1) pivoted motor power (11), its characterized in that: the device is characterized by further comprising fixed blocks (2) respectively arranged at two ends of the front roller (12), the two fixed blocks (2) are fixedly connected onto the support frame (1), a sliding block (4) sliding along the axis direction of the front roller (12) is arranged above the front roller (12), a supporting column (21) parallel to the axis direction of the front roller (12) in the axis direction is arranged between the two fixed blocks (2), the supporting column (21) is fixedly connected with the two fixed blocks (2), the supporting column (21) penetrates through the sliding block (4), and a sliding driving assembly (3) for driving the sliding block (4) to slide on the supporting column (21) along the axis direction of the supporting column (21) is arranged on one fixed block (2); the bottom of the sliding block (4) is provided with a cutter (422) used for cutting the sizing material adhered on the front roller (12).
2. A scraper assembly for an open mill according to claim 1, characterized in that: drive assembly (3) include axis direction and support column (21) axis direction parallel rotation screw rod (32) and output shaft and one end fixed connection's of rotating screw rod (32) driving motor (31), rotate screw rod (32) and run through two fixed blocks (2) and rotate with fixed block (2) and link together, rotate screw rod (32) and sliding block (4) threaded connection together, driving motor (31) rigid coupling is on a fixed block (2).
3. A scraper assembly for an open mill according to claim 1, characterized in that: the number of the cutters (422) is two, the two cutters (422) are arranged along the axis direction of the front roller (12), and the blade edges of the two cutters (422) are arranged towards the direction away from each other.
4. A scraper assembly for an open mill according to claim 3, characterized in that: the bottom of the sliding block (4) is provided with a sliding groove (41), a sliding plate (42) is arranged in the sliding groove (41), the sliding plate (42) slides in the sliding groove (41) along the vertical direction, and the two cutters (422) are arranged on the sliding plate (42).
5. A scraper device of an open mill according to claim 4, characterized in that: the top of the sliding plate (42) is rotatably connected with a lifting bolt (424), and the lifting bolt (424) upwards penetrates through the sliding block (4) and is in threaded connection with the sliding block (4).
6. A scraper device of an open mill according to claim 4, characterized in that: the bottom of sliding plate (42) is close to the position of two cutters (422) and has all seted up holding tank (421), and holding tank (421) run through sliding plate (42) towards the direction of keeping away from each other, and two cutters (422) are located two holding tanks (421) respectively, rotate on sliding block (4) and are connected with two fixing bolt (423), and the tip of two fixing bolt (423) can run through sliding block (4) and be in the same place in two cutters (422) threaded connection respectively.
7. A scraper device of an open mill according to claim 4, characterized in that: both sides and the bottom of the sliding plate (42) are coated with a thin film (425).
8. A scraper device of an open mill according to claim 7, characterized in that: the plane of the bottom of the cutting knife (422) is lower than the plane of the bottom of the film (425).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020869804.6U CN212445885U (en) | 2020-05-21 | 2020-05-21 | Scraper device of open mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020869804.6U CN212445885U (en) | 2020-05-21 | 2020-05-21 | Scraper device of open mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212445885U true CN212445885U (en) | 2021-02-02 |
Family
ID=74500399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020869804.6U Expired - Fee Related CN212445885U (en) | 2020-05-21 | 2020-05-21 | Scraper device of open mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212445885U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116198045A (en) * | 2023-03-21 | 2023-06-02 | 南京东润特种橡塑有限公司 | Environment-friendly sluice rubber sealing member processing device and processing method thereof |
-
2020
- 2020-05-21 CN CN202020869804.6U patent/CN212445885U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116198045A (en) * | 2023-03-21 | 2023-06-02 | 南京东润特种橡塑有限公司 | Environment-friendly sluice rubber sealing member processing device and processing method thereof |
| CN116198045B (en) * | 2023-03-21 | 2023-09-05 | 南京东润特种橡塑有限公司 | Environment-friendly sluice rubber sealing member processing device and processing method thereof |
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| 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: 20210202 |