CN210848554U - Manual circle shearing machine - Google Patents
Manual circle shearing machine Download PDFInfo
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- CN210848554U CN210848554U CN201921464834.2U CN201921464834U CN210848554U CN 210848554 U CN210848554 U CN 210848554U CN 201921464834 U CN201921464834 U CN 201921464834U CN 210848554 U CN210848554 U CN 210848554U
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- shearing machine
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Abstract
The utility model discloses a manual circle shearing machine relates to the technical field of sheet metal processing equipment, including frame and U type frame, the one end that U type frame was kept away from in the frame is equipped with cutting assembly, and cutting assembly includes cutter and last cutter down, is equipped with holding down plate and top board on the U type frame, rotates the spliced pole that is connected with vertical setting on the holding down plate, and the spliced pole is fixed on U type frame, is provided with the measuring component who is used for measuring relative distance between spliced pole axis and last cutter and the lower cutter cutting point between holding down plate and the lower cutter. Through the setting, relative distance between two cutters and two pressing plates can be effectively controlled, so that the effect of controlling and determining the radius of a circular metal plate to be processed is achieved, the operation steps of processing and producing the circular metal plate are reduced, the phenomenon that the diameter of the circular metal plate is different in size is effectively reduced, and the qualified rate of the circular metal plate is effectively improved.
Description
Technical Field
The utility model belongs to the technical field of the technique of sheet metal processing equipment and specifically relates to a manual circle shearing machine is related to.
Background
The circle shearing machine is mainly used for cutting inner and outer circles of aluminum plates, galvanized plates and various metal plates, is often used for machining finished round plates, is common metal plate machining equipment in daily production, is commonly used for manufacturing a cylinder bottom and traffic indication guideboards, firstly draws a circle line on a thin plate by compasses when cutting a round plate, and then manually shears the circle along the line by shearing force. The shearing method has the advantages that the shearing speed is low on one hand, the shearing positioning is inaccurate on the other hand, burrs are easily generated, the cutting process is laborious, the problems are solved to a certain extent by the shearing machine, when the shearing machine works, the workpieces are cut off by the reverse rotation of the two cutters, the friction force brought by the cutters is rotated by taking the crimping position as the circle center, and the whole cutting process is completed by one rotation of the work so as to ensure that the workpieces have smooth trimming.
The Chinese patent with the granted publication number of CN209189912U provides a numerical control circle shearing machine, which comprises a frame, wherein a U-shaped frame is connected to the frame in a sliding manner, the right end of the U-shaped frame is fixedly connected with a second electric push rod through a flange, the second electric push rod is fixedly connected with the right edge position of the upper end surface of the frame through a fixed plate, a first electric push rod is fixed at the upper end of the U-shaped frame, a telescopic rod at the lower end of the first electric push rod penetrates through the U-shaped frame and is rotatably connected with an upper pressing plate at the upper part in the U-shaped frame, the upper pressing plate is positioned right above a lower pressing plate, the lower pressing plate is rotatably connected to the lower end in the U-shaped frame through a bearing, a first cutter and a second cutter are arranged on the left side of the U-shaped frame, the first cutter and the second cutter are both fixed on connecting rods, the right.
The above prior art solutions have the following drawbacks: when the circular cutting machine rounds a metal plate, the metal plate is fixed between an upper pressure plate and a lower pressure plate, then a U-shaped frame is pushed to slide on a frame, after the metal plate is contacted with a first cutter and a second cutter, the metal plate is cut by the first cutter and the second cutter which rotate, but the diameter of the produced metal plate is required to be consistent when the same batch of circular metal plates are required to be produced, when the circular cutting machine cuts the metal plate, the circle center and the radius of a circle to be processed are firstly determined on the metal plate, and then the metal plate is put into the circular cutting machine for cutting, but when the metal plate is manually clamped, the rotating centers of the upper pressure plate and the lower pressure plate are difficult to align with the circle center determined on the metal plate, and when the U-shaped frame is driven by an electric push rod two, the relative distances between the first cutter and the second cutter as well as between the upper pressure plate and the lower pressure plate are difficult to control, so that the sizes of the produced circular metal plates are inconsistent, the yield of the round metal plate is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a manual circle shearing machine has control and confirms the radial effect of circular metal sheet that needs to process, the effectual off-the-shelf qualification rate of circular metal sheet that has improved.
The utility model discloses a can realize through following technical scheme:
the utility model provides a manual circle shearing machine, includes frame and sliding connection U type frame in the frame, the frame is kept away from the one end of U type frame is equipped with cutting assembly, cutting assembly is including rotating the setting lower cutter in the frame and locating go up the cutter directly over the lower cutter, U type frame is close to the one end of lower cutter is rotated and is connected with the holding down plate that the level set up and is located the top board directly over the holding down plate, it is connected with the spliced pole of vertical setting to rotate on the holding down plate, the spliced pole is fixed on the U type frame, be provided with between holding down plate and the lower cutter and be used for measuring the spliced pole axis with go up the cutter with be provided with the measuring component of relative distance between the cutter cutting point down.
Further setting the following steps: the measuring assembly comprises a measuring scale which is fixed on the rack and parallel to the moving direction of the U-shaped frame and used for measuring the radius of a circular metal plate to be processed, and a sliding sleeve which is fixed on the connecting column and used for marking the axis of the connecting column at the position on the measuring scale, wherein the sliding sleeve is sleeved on the measuring scale in a sliding manner.
Through adopting above-mentioned technical scheme, when shearing the circle on the metal sheet, press from both sides the metal sheet tight between top board and holding down plate, then drive U type frame in the frame to the direction slip for last cutter and cutter down, the sliding sleeve slides along dipperstick measuring direction this moment, come the axis of control spliced pole to go up the relative distance between cutter and the cutter cutting point down through reading the position of sliding sleeve on the dipperstick, can two effectual control cutters reach the relative distance between two clamp plates, thereby reach control and confirm the effect that needs to process circular metal sheet radius, the operating procedure when having reduced the circular metal sheet of processing production, the effectual work efficiency who processes circular metal sheet that has improved, further the effectual phenomenon that reduces circular metal sheet diameter variation in size appears, the effectual off-the-shelf qualification rate that improves circular metal sheet.
Further setting the following steps: the measuring scale is located on the outer side of the sliding track of the U-shaped frame, and a connecting line of a zero scale line on the measuring scale and cutting points of the upper cutter and the lower cutter is perpendicular to the measuring direction of the measuring scale.
Through adopting above-mentioned technical scheme, set up the dipperstick in the outside of U type frame slip orbit, prevent that the phenomenon that the dipperstick hinders U type frame motion from appearing, align with the cutting point of last cutter and lower cutter through the zero scale mark that makes the dipperstick, make things convenient for the staff to read the cutting point of last cutter and lower cutter and to the distance between the spliced pole, be favorable to the staff to confirm the radius of processing circular metal sheet.
Further setting the following steps: the sliding sleeve is parallel to the axis setting of spliced pole and with the axis of spliced pole is located the coplanar for the one end side of dipperstick zero scale mark.
Through adopting above-mentioned technical scheme, can conveniently discern and measure the relative distance between spliced pole axis to two cutter cutting points, can effectual improvement measured data's accuracy.
Further setting the following steps: and the graduated scale is provided with a limiting assembly for limiting the relative distance from the sliding sleeve to the zero graduation line of the measuring scale.
Through adopting above-mentioned technical scheme, control the sliding sleeve through setting up spacing subassembly and slide along the dipperstick, further reduce to lead to the phenomenon appearance that the cutter cut too much metal sheet down with the cutter because of the excessive slip of U type frame.
Further setting the following steps: the limiting assembly is sleeved with the identification block on the measuring scale in a sliding mode, the identification block is connected with the fixing bolt in a threaded mode, the identification block is in limiting when the sliding sleeve runs, and the fixing bolt is in butt connection with the measuring scale.
Through adopting above-mentioned technical scheme, adjust the sign piece and slide on the dipperstick, make the sign piece keep away from the radius that the one end of the zero scale mark of dipperstick is the circular metal sheet of needs processing to the distance of the zero scale mark of dipperstick, when U type frame removed, the sliding sleeve can slide on the dipperstick, when the sliding sleeve bump joint on the sign piece, the distance of cut point between spliced pole axis and last cutter and the lower cutter equals the sign piece and is close to the radius that the distance of sliding sleeve one end to the zero scale mark of dipperstick equals the circular metal sheet of needs processing, reach control and confirm the effect that need process circular metal sheet radius, through setting up fixing bolt, the effectual job stabilization nature who improves the sign piece.
Further setting the following steps: be fixed with level setting and perpendicular to on the spliced pole the transition pole that the dipperstick set up, the sliding sleeve is fixed the transition pole is kept away from the one end of spliced pole.
Through adopting above-mentioned technical scheme, strengthen the stability of being connected between spliced pole and the sliding sleeve through setting up the transition pole.
Further setting the following steps: the two ends of the measuring scale are both fixed with vertically arranged connecting plates, and the connecting plates are fixedly connected to the rack.
Through adopting above-mentioned technical scheme, through setting up the connecting plate, improved the stability of being connected between dipperstick and the frame effectively, make whole dipperstick hang and establish in the frame upper end, make things convenient for the sliding sleeve to slide along the dipperstick.
Further setting the following steps: the upper pressing plate and the lower pressing plate are both located at the opening end of the U-shaped frame, the upper end of the U-shaped frame is in threaded connection with a vertically arranged adjusting threaded rod, and the adjusting threaded rod is rotatably connected with the upper pressing plate.
Through adopting above-mentioned technical scheme, through the adjusting threaded rod of the vertical setting of threaded connection on U type frame, when rotating adjusting threaded rod for the top board is to the direction motion of holding down plate in opposite directions/dorsad, thereby reaches the effect that makes top board and holding down plate press from both sides tight metal sheet.
Further setting the following steps: the utility model discloses a drive threaded rod, including frame, U type frame, drive threaded rod, U type frame, drive threaded rod threaded connection, it is parallel to rotate to be connected with in the frame the drive threaded rod that U type frame traffic direction set up, U type frame with drive threaded rod threaded connection, set up a plurality of parallels on the U type frame the spout that drive threaded rod set up, be fixed with in the frame and be on a parallel with the slip arch that the spout set up, slip arch with spout sliding connection.
Through adopting above-mentioned technical scheme, through setting up drive threaded rod to make U type frame and drive threaded rod threaded connection, when rotating drive threaded rod, make U type frame slide in the frame under drive threaded rod's effect, and set up the spout on U type frame, and set up the slip arch of sliding connection in the spout in the frame, the effectual gliding stability of frame edge of U type frame that has improved.
To sum up, the utility model discloses a beneficial technological effect does:
(1) the relative distance between the two cutters and the two pressing plates can be effectively controlled, so that the effect of controlling and determining the radius of the circular metal plate to be processed is achieved, the phenomenon that the diameters of the circular metal plate are different is further effectively reduced, and the qualified rate of the circular metal plate finished product is effectively improved;
(2) the operation steps for processing and producing the round metal plate are reduced, and the working efficiency for processing the round metal plate is effectively improved;
(3) the operation is simple, the sliding formation of the U-shaped frame is convenient to control, and the practicability is high.
Drawings
FIG. 1 is a schematic view of the overall structure of a manual circle shearing machine;
fig. 2 is a partially enlarged view of a portion a in fig. 1.
Reference numerals: 1. a frame; 2. a U-shaped frame; 3. driving the threaded rod; 4. a hand wheel; 5. a chute; 6. a sliding projection; 7. a rotating shaft; 8. a lower cutter; 9. an upper cutter; 10. connecting a threaded rod; 11. a slide plate; 12. lifting a threaded rod; 13. connecting columns; 14. a lower pressing plate; 15. an upper pressure plate; 16. adjusting the threaded rod; 17. measuring a scale; 18. a connecting plate; 19. a sliding sleeve; 20. a transition rod; 21. an identification block; 22. and (5) fixing the bolt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, for the utility model discloses a manual circle shearing machine, including frame 1 and the U type frame 2 of sliding connection in frame 1, U type frame 2 is along 1 length direction horizontal slip of frame. The frame 1 is rotatably connected with a driving threaded rod 3 which is parallel to the sliding direction of the U-shaped frame 2, and the U-shaped frame 2 is in threaded connection with the driving threaded rod 3. In order to conveniently rotate the driving threaded rod 3, the two ends of the driving threaded rod 3 are fixedly connected with hand wheels 4.
Referring to fig. 1, in order to improve the stability of the sliding operation of the U-shaped frame 2 along the frame 1, two sliding grooves 5 parallel to the driving threaded rod 3 are formed in the position, close to the side edge of the frame 1 parallel to the operation direction of the U-shaped frame 2, a sliding protrusion 6 parallel to the sliding grooves 5 is fixed on the frame 1 relative to the sliding grooves 5, and the sliding protrusion 6 is in sliding connection with the sliding grooves 5.
Referring to fig. 1, one end of the frame 1, which is far away from the U-shaped frame 2, is provided with a cutting assembly, and the open end of the U-shaped frame 2 is arranged towards the cutting assembly. The cutting assembly comprises a rotating shaft 7 arranged on the frame 1 and a lower cutter 8 fixed on the rotating shaft 7, and the rotating shaft 7 is parallel to the driving threaded rod 3.
Referring to fig. 1, a driving assembly for driving the rotating shaft 7 to rotate is arranged on the rotating shaft 7, the driving assembly comprises a driven gear fixed on the rotating shaft 7 and a driving motor fixed in the rack 1, a driving gear is fixed on the driving motor, and a driving chain is sleeved on the driving gear and the driven gear.
Referring to fig. 1, an upper cutter 9 is arranged right above a lower cutter 8, a connecting threaded rod 10 parallel to the rotating shaft 7 is rotatably connected to the upper cutter 9, the connecting threaded rod 10 is in threaded connection with a sliding plate 11 vertical to the connecting threaded rod 10, the sliding plate 11 slides along the vertical direction of the rack 1, the upper end of the sliding plate 11 is rotatably connected with a lifting threaded rod 12 vertically arranged, and the lifting threaded rod 12 is rotatably connected to the rack 1.
Referring to fig. 1 and 2, a vertically arranged connecting column 13 is fixed at one end of the U-shaped frame 2 close to the lower cutter 8, and the axis of the connecting column 13 is perpendicular to the axis of the rotating shaft 7 and is located in the same plane. The upper end of the connecting column 13 is rotatably connected with a lower pressing plate 14 which is horizontally arranged, an upper pressing plate 15 which is horizontally arranged is fixed at the right upper end of the lower pressing plate 14, a position of the U-shaped frame 2 close to the upper pressing plate 15 is in threaded connection with an adjusting threaded rod 16 which is vertically arranged, and the adjusting threaded rod 16 is rotatably connected with the upper pressing plate 15. By rotating the adjusting threaded rod 16, the adjusting threaded rod 16 drives the upper press plate 15 to move towards/away from the lower press plate 14, so as to fix the metal plate to be processed.
Referring to fig. 1 and 2, a measuring assembly for measuring the relative distance between the axis of the connecting column 13 and the cutting points of the upper cutter 9 and the lower cutter 8 is arranged on the machine frame 1 and close to the position between the lower pressing plate 14 and the lower cutter 8. The measuring component comprises a measuring scale 17 which is fixed on the frame 1 and is parallel to the moving direction of the U-shaped frame 2 and used for measuring the radius of a circular metal plate to be processed, the measuring scale 17 is positioned on the outer side of the sliding track of the U-shaped frame 2, two ends of the measuring scale 17 are fixedly connected with a connecting plate 18 which is perpendicular to the measuring scale 17 and vertically arranged, and the connecting plate 18 is fixedly connected on the frame 1.
Referring to fig. 1, to facilitate the determination of the relative distance between the axis of the connecting column 13 and the cutting points of the upper cutter 9 and the lower cutter 8, the line connecting the zero graduation line position on the measuring scale 17 and the cutting point positions of the upper cutter 9 and the lower cutter 8 is perpendicular to the measuring direction of the measuring scale 17.
Referring to fig. 1 and 2, the measuring assembly further comprises a sliding sleeve 19 arranged on the connecting column 13 and used for marking the position of the axis of the connecting column 13 on the measuring scale 17, a transition rod 20 horizontally arranged and perpendicular to the measuring scale 17 and the connecting column 13 is fixed on the connecting column 13, the sliding sleeve 19 is fixed on the transition rod 20 and is far away from one end of the connecting column 13, and the sliding sleeve 19 is slidably sleeved on the measuring scale 17.
Referring to fig. 1 and 2, in order to facilitate reading the position of the axis of the connecting column 13 on the measuring scale 17, one end of the sliding sleeve 19, which is opposite to the zero graduation line of the measuring scale 17, is disposed parallel to the axis of the connecting column 13 and is located on the same plane with the axis of the connecting column 13. Be provided with the spacing subassembly that is used for injecing 19 relative distance between the zero scale mark of measuring rule to the sliding sleeve on the scale, spacing subassembly including slip cup joint the sign block 21 on measuring rule 17, threaded connection has fixing bolt 22 on the sign block 21, sign block 21 when being in the operating condition of 19 operations of restriction sliding sleeve, fixing bolt 22 butt is in on the measuring rule 17.
Referring to fig. 2, when processing the circular plate of certain diameter, slide marking block 21 to the assigned position of dipperstick 17 earlier on to use fixing bolt 22 to fix, then promote U type frame 2 and slide, when treating that sliding sleeve 19 butt is to marking block 21, stop promoting U type frame 2, then drive down cutter 8 through drive axis of rotation 7 and rotate, go up cutter 9 and lower cutter 8 and carry out the circle of contact to the metal sheet.
The implementation principle and the beneficial effects of the embodiment are as follows:
when the metal plate is sheared to be round, the metal plate is clamped between the upper pressing plate 15 and the lower pressing plate 14, then the U-shaped frame 2 is driven to slide on the rack 1 in the direction opposite to the upper cutter 9 and the lower cutter 8, at the moment, the sliding sleeve 19 slides in the measuring direction of the measuring scale 17, the relative distance from the axis of the connecting column 13 to the cutting point of the upper cutter 9 and the lower cutter 8 is controlled by reading the position of the sliding sleeve 19 on the measuring scale 17, the relative distance between the two cutters and the two pressing plates can be effectively controlled, the effect of controlling and determining the radius of the circular metal plate to be machined is achieved, the operation steps of machining and producing the circular metal plate are reduced, the working efficiency of machining the circular metal plate is effectively improved, the phenomenon that the diameters of the circular metal plate are different in size is further effectively reduced, and the qualified rate of the circular metal plate is effectively improved.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. The utility model provides a manual circle shearing machine, includes frame (1) and sliding connection U type frame (2) in frame (1), frame (1) is kept away from the one end of U type frame (2) is equipped with cutting assembly, cutting assembly is including rotating lower cutter (8) that sets up in frame (1) and locating go up cutter (9) directly over cutter (8) down, U type frame (2) are close to one end rotation that lower cutter (8) are connected with holding down plate (14) that the level set up and are located top board (15) directly over holding down plate (14), its characterized in that: the upper pressing plate (14) is rotatably connected with a connecting column (13) which is vertically arranged, the connecting column (13) is fixed on the U-shaped frame (2), and a measuring component which is used for measuring the relative distance between the axis of the connecting column (13) and the cutting points of the upper cutter (9) and the lower cutter (8) is arranged between the lower pressing plate (14) and the lower cutter (8).
2. A hand-operated circle shearing machine as defined in claim 1, wherein: the measuring assembly comprises a measuring scale (17) which is fixed on the rack (1) and is parallel to the U-shaped frame (2) in the movement direction and used for measuring the radius of a circular metal plate to be processed, and further comprises a sliding sleeve (19) which is fixed on the connecting column (13) and used for marking the axis of the connecting column (13) at the upper position of the measuring scale (17), wherein the sliding sleeve (19) is sleeved on the measuring scale (17) in a sliding manner.
3. A hand-operated circle shearing machine as claimed in claim 2, characterized in that: the measuring scale (17) is located on the outer side of the sliding track of the U-shaped frame (2), and a connecting line of a zero scale line on the measuring scale (17) and cutting points of the upper cutter (9) and the lower cutter (8) is perpendicular to the measuring direction of the measuring scale (17).
4. A hand-operated circle shearing machine as defined in claim 3, wherein: the sliding sleeve (19) is parallel to the axis of the connecting column (13) relative to the side face of one end of the zero scale mark of the measuring scale (17) and is positioned on the same plane with the axis of the connecting column (13).
5. A hand-operated circle shearing machine according to claim 4, characterized in that: the measuring scale (17) is provided with a limiting assembly for limiting the relative distance from the sliding sleeve (19) to the zero scale mark of the measuring scale (17).
6. A hand-operated circle shearing machine as claimed in claim 5, characterized in that: spacing subassembly is in including sliding sleeve joint sign block (21) on dipperstick (17), threaded connection has fixing bolt (22) on sign block (21), sign block (21) are in the restriction during the operating condition of sliding sleeve (19) operation, fixing bolt (22) butt is in on dipperstick (17).
7. A hand-operated circle shearing machine according to claim 6, characterized in that: be fixed with level setting and perpendicular to on spliced pole (13) transition pole (20) that dipperstick (17) set up, sliding sleeve (19) are fixed transition pole (20) are kept away from the one end of spliced pole (13).
8. A hand-operated circle shearing machine as claimed in claim 2, characterized in that: the two ends of the measuring scale (17) are fixed with connecting plates (18) which are vertically arranged, and the connecting plates (18) are fixedly connected to the rack (1).
9. A hand-operated circle shearing machine as defined in claim 1, wherein: the upper pressing plate (15) and the lower pressing plate (14) are located at the opening end of the U-shaped frame (2), the upper end of the U-shaped frame (2) is in threaded connection with an adjusting threaded rod (16) which is vertically arranged, and the adjusting threaded rod (16) is rotatably connected with the upper pressing plate (15).
10. A hand-operated circle shearing machine as defined in claim 1, wherein: frame (1) is last to rotate be connected with be on a parallel with drive threaded rod (3) that U type frame (2) traffic direction set up, U type frame (2) with drive threaded rod (3) threaded connection, set up a plurality of parallels on U type frame (2) spout (5) that drive threaded rod (3) set up, be fixed with on frame (1) and be on a parallel with the slip arch (6) that spout (5) set up, slip arch (6) with spout (5) sliding connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921464834.2U CN210848554U (en) | 2019-09-03 | 2019-09-03 | Manual circle shearing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921464834.2U CN210848554U (en) | 2019-09-03 | 2019-09-03 | Manual circle shearing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210848554U true CN210848554U (en) | 2020-06-26 |
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ID=71298781
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921464834.2U Expired - Fee Related CN210848554U (en) | 2019-09-03 | 2019-09-03 | Manual circle shearing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210848554U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116038012A (en) * | 2022-10-27 | 2023-05-02 | 杭州日通不锈钢制品有限公司 | Stainless steel plate cutting device |
-
2019
- 2019-09-03 CN CN201921464834.2U patent/CN210848554U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116038012A (en) * | 2022-10-27 | 2023-05-02 | 杭州日通不锈钢制品有限公司 | Stainless steel plate cutting device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200828 Address after: Room 7, 10 / F, unit 2, Huazhong International Plaza, No. 182, Huangxiaohe Road, Jiangan District, Wuhan City, Hubei Province Patentee after: Wuhan feichuang Intelligent Technology Co.,Ltd. Address before: 430040, No. 399, pear Road, Dongxihu District, Wuhan, Hubei (17) Patentee before: Wuhan feichuang Traffic Engineering Co.,Ltd. |
|
| 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: 20200626 |