CN210339732U - Carrier tape tension control system for automatically winding and receiving materials - Google Patents
Carrier tape tension control system for automatically winding and receiving materials Download PDFInfo
- Publication number
- CN210339732U CN210339732U CN201920921335.5U CN201920921335U CN210339732U CN 210339732 U CN210339732 U CN 210339732U CN 201920921335 U CN201920921335 U CN 201920921335U CN 210339732 U CN210339732 U CN 210339732U
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Abstract
The utility model provides a carrier band tension control system for automatic receipts material of rolling up, it can solve the problem that the carrier band can't be with the rolling of invariable tension when current carrier band is automatic to be received the material of rolling up. The automatic belt winding device comprises a tension pulley device, wherein the tension pulley device comprises a support, a tension pulley and a control sensor, the support is fixedly arranged between a discharge end of a previous process device and a winding device, the control sensor comprises an upper limit sensor and a lower limit sensor which are linearly arranged on the support from top to bottom, the tension pulley is rotatably arranged on the support and can float up and down between the upper limit sensor and the lower limit sensor, the discharge end of the previous process device continuously discharges materials, the winding device continuously winds a carrier belt in the process that the tension pulley is in rolling contact with the carrier belt, the carrier belt is tensioned under the action of dead weight pressing of the tension pulley, the winding motor is a servo motor, and the upper limit sensor and the lower limit sensor are respectively in electric control connection with the winding motor.
Description
Technical Field
The utility model relates to an automation equipment field specifically is a carrier band tension control system that is used for automatic receipts material around rolling up.
Background
After the electronic component packaging test is finished, electronic components are placed into the carrier tape pockets which are arranged in order through the braiding equipment, then the carrier tape is sealed through the cover tape, and finally the sealed carrier tape is wound into the vacant reel through the carrier tape receiving system. At present, automatic winding and receiving systems capable of automatically feeding and discharging a reel and automatically attaching tail adhesive tapes gradually appear in the field, but the carrier tape winding speed of the existing automatic carrier tape winding and receiving systems is often inconsistent with the carrier tape discharging speed of a front device in the operation process, so that the carrier tape cannot be stably, reliably and tightly wound into the reel with constant tension, and the winding quality of the carrier tape cannot meet the requirement.
Disclosure of Invention
To the above problem, the utility model provides a carrier band tension control system for automatic receipts material is received around rolling up, it can solve the problem that the carrier band can't be with the rolling of invariable tension when current carrier band is automatic to receive the material around rolling up.
The technical scheme is that, a carrier band tension control system for receiving material is received to automatic winding, it includes the coiling mechanism, the coiling mechanism includes rolling motor and rolling axle for the reel detachably of rolling carrier band assembles in on the rolling axle, thereby rolling motor can drive rolling axle and reel rotate and will come from the carrier band rolling of preceding process equipment discharge end to the reel on, its characterized in that: the automatic belt winding device comprises a tension pulley device, wherein the tension pulley device comprises a support, a tension pulley and a control sensor, the support is fixedly arranged between a discharge end of a previous process device and a winding device, the control sensor comprises an upper limit sensor and a lower limit sensor which are linearly arranged on the support from top to bottom, the tension pulley is rotatably arranged on the support and can float up and down between the upper limit sensor and the lower limit sensor, the tension pulley is in rolling contact with a carrier belt and the carrier belt is tensioned under the self-weight pressing action of the tension pulley in the process that the discharge end of the previous process device continuously discharges materials and the winding device continuously winds the carrier belt, the winding motor is a servo motor, and the upper limit sensor and the lower limit sensor are respectively in electric control connection with the winding motor.
Furthermore, the tension wheel is arranged on the bracket in a vertically floating manner through a floating support mechanism, the floating support mechanism comprises a floating plate and a bearing track, the bearing track is fixedly arranged on the floating plate, the tension wheel is rotatably arranged on the floating plate and is positioned above the bearing track, a floating slide rail extending vertically is fixedly arranged on the front side surface of the bracket, and the floating plate is connected to the floating slide rail in a sliding manner; the carrier tape from the discharge end of the equipment in the previous process is wound into a reel by a winding device after passing through between the tension pulley and the bearing track, and the carrier tape is tensioned under the action of the dead weight of the tension pulley.
Further, the tension pulley device still includes tension cylinder and unsteady connecting block, tension cylinder set firmly in the rear side top of support and tension cylinder's guide arm tip down, unsteady connecting block one end with unsteady board rigid coupling, the other end with tension cylinder's guide arm tip swing joint, still be equipped with on the support and lie in upper limit position sensor top and move back the material level sensor, move back the material level sensor with the automatically controlled connection of coiling motor.
Furthermore, the floating connecting block is L-shaped, one end of the L-shaped floating connecting block is fixedly connected with the side face of the floating plate, the other end of the L-shaped floating connecting block is provided with a sliding cavity, the guide rod of the tension cylinder penetrates through the sliding cavity of the floating connecting block, the end part of the guide rod is fixedly connected with a lifting nut, when the guide rod of the tension cylinder extends out, the tension wheel only falls under the self-weight action, and when the guide rod of the tension cylinder retracts and resets, the lifting nut drives the floating connecting block and drives the whole tension wheel and the bearing track to move upwards together through the floating plate.
Furthermore, a plurality of tension pulley devices are arranged between the discharge end of the previous process equipment and the winding device in parallel in sequence.
Further, the coiling mechanism is installed on vertical elevating system, the coiling motor and the vertical elevating system of coiling mechanism are automatically controlled to be connected, the coiling motor drives the rolling axle and rotates every round promptly the carrier band on the reel after every length of rolling up a round the vertical elevating system drives the coiling mechanism and wholly moves down the distance of a carrier band thickness d.
The winding device comprises a winding device, a pressure lever device and a control device, wherein the winding device comprises a winding device, the pressure lever device comprises a tension rod and a rotary cylinder, one end of the tension rod is connected with the output end of the rotary cylinder, and the rotary cylinder drives the tension rod to rotate so that the tension rod can extend between two baffles of an empty reel on the winding device and is tangent and pressed with the excircle of a carrier tape wound on the empty reel all the time; the tension rod is always in rolling contact with the excircle of the carrier tape wound on the reel in the process that the carrier tape is wound on the reel under the driving of the winding device;
further, the compression bar device further comprises a limiting rod, the limiting rod is connected with the tension rod through a connecting block, the limiting rod is parallel to the tension rod, the tension rod is located on the front side of the limiting rod, and when the tension rod stretches into the space between the two baffles of the reel, the limiting rod compresses the front baffle of the reel from the front side face.
The beneficial effects of the utility model reside in that: the tension control is carried out on the carrier tape which is continuously discharged and wound through a tension pulley device which is arranged between the discharging end of the previous process equipment and the winding device, the carrier tape is always tensioned and takes a falling U shape under the action of the dead weight of a tension pulley in the tension pulley device, meanwhile, under the influence of the difference between the discharging speed of the carrier tape of the equipment in the previous process and the winding speed of the winding device, the tension pulley can float up and down along the bracket under the supporting action of the tensioned carrier tape, the upper limit sensor and the lower limit sensor arranged on the bracket control the rotating speed of a winding motor in the winding device according to the position of the tension pulley, therefore, the speed difference between the winding speed of the winding device and the discharging speed of the previous process equipment is ensured to be within a constant range, the carrier tape is ensured to be wound and collected with constant tension, and the winding quality of the carrier tape is ensured to be stable and reliable; in addition, the winding device is arranged on the vertical lifting mechanism, a winding motor of the winding device is electrically connected with the vertical lifting mechanism, the winding motor drives a winding shaft to rotate for one circle, namely, the length of each circle of winding of the carrier tape on the reel is reached, then the vertical lifting mechanism drives the winding device to integrally move down by the thickness d of the carrier tape, and then the winding device can synchronously and integrally move down along with the continuous increase of the winding outer diameter of the carrier tape on the reel, so that the carrier tape can be wound and collected by the winding device in a horizontal state all the time, the carrier tape is further ensured to be wound and wound on the reel with constant tension, the problem that the tension of the carrier tape is continuously increased due to the increase of the diameter of the carrier tape on the reel caused by the continuous winding of the carrier tape on the reel is avoided, and the phenomenon that the carrier tape is; in addition, when the reel is cut by the former process equipment after being fully wound with the carrier tape, the tension pulley device can not control the tension of the carrier tape which is not completely wound into the reel under the condition, and then the compression bar of the compression bar device can be tangent and compressed with the excircle of the carrier tape wound on the reel all the time, so that the carrier tape can be ensured to be cut by the former process equipment, and the carrier tape can continue to be wound with constant tension to receive the material under the condition that the tension control of the tension pulley device fails, and the stable and reliable winding and receiving of the carrier tape are further ensured.
Drawings
Fig. 1 is a schematic structural view of a carrier tape tension control system for automatically winding and receiving material according to the present invention;
FIG. 2 is a schematic view of the system of the present invention in a state where the reel is not mounted on the winding device;
fig. 3 is a schematic view of the enlarged three-dimensional structure of the tension pulley device in the system of the present invention.
Reference numerals: 10-a winding device, 11-a winding motor and 12-a winding shaft; 20-the discharge end of the equipment in the previous process; 30-a tension wheel device, 31-a bracket, 32-a tension wheel, 33-an upper limit sensor, 34-a lower limit sensor, 35-a floating plate, 36-a bearing rail, 37-a floating slide rail, 38-a tension cylinder, 39-a floating connecting block, 310-a lifting nut, 311-a material returning position sensor, 312-a supporting frame and 313-a fixing frame; 40-a vertical lifting mechanism; 50-a pressure lever device, 51-a tension lever, 52-a rotary cylinder, 53-a limiting lever and 54-a connecting block; 60-reel; 70-head end conveying and tail adhesive tape attaching device of carrier tape.
Detailed Description
Referring to fig. 1 to 3, the utility model relates to a carrier band tension control system for automatically winding material, which comprises a winding device 10, wherein the winding device 10 comprises a winding motor 11 and a winding shaft 12, the winding motor 11 is a servo motor, a reel 60 for winding a carrier band is detachably assembled on the winding shaft 12, and the winding motor 11 can drive the winding shaft 12 and the reel to rotate so as to wind the carrier band from the discharge end of the previous process equipment onto the reel; the device comprises a tension pulley device 30, wherein the tension pulley device 30 comprises a support 31, a tension pulley 32 and a control sensor, the support 31 is fixedly arranged on a fixed frame 313 through a support frame 312 and is integrally arranged between the discharge end of the previous process equipment and a winding device 10, in the embodiment, a head end conveying and tail adhesive tape attaching device 70 of a carrier tape is also arranged at the feeding end of the winding device 10, and the whole tension pulley device 30 is arranged between the head end conveying and tail adhesive tape attaching device 70 of the carrier tape and the discharge end of the previous process equipment; the control sensor comprises an upper limit sensor 33 and a lower limit sensor 34 which are linearly arranged on the bracket 31 from top to bottom, the tension pulley 32 is rotatably arranged on the bracket 31 and can float up and down between the upper limit sensor 33 and the lower limit sensor 34, in the process of continuously discharging at the discharging end of the previous process equipment and continuously winding the carrier belt by the winding device, the tension pulley 32 is in rolling contact with the carrier belt and the carrier belt is tensioned under the self-weight pressing action of the tension pulley 32, generally, because the winding speed of the winding device 10 is lower than the discharging speed of the previous process equipment, therefore, the carrier tape is in a partial U-shaped hanging state under the pressing and tensioning action of the tension pulley 32, the larger the difference between the discharging speed of the previous process equipment and the winding speed of the winding device 20 is, the larger the height of the U-shaped hanging drop formed by the carrier tape under the pressing and tensioning action of the tension pulley 32 is, and the smaller the height of the U-shaped hanging drop is otherwise; therefore, the tension wheel device 30 can also play an effective carrier tape storage role, so that when the carrier tape discharging speed of the previous process equipment is far greater than the carrier tape winding speed of the winding device 10 or the reel changing speed of a reel on the winding device, the carrier tape from the discharging end of the previous process equipment can be temporarily stored by the tension wheel device 30, so that the previous process equipment can always keep the discharging of the carrier tape without stopping, and the continuous working efficiency of the whole production line is ensured; in addition, in the continuous winding process of the carrier tape, the carrier tape is tensioned under the action of the dead weight of the tension pulley 32, and simultaneously, along with the fluctuation change of the difference between the discharging speed of the equipment in the previous process and the winding speed of the winding device 20, the tension pulley 32 also floats up and down along the bracket under the action of the bearing of the tensioned carrier tape, the upper limit sensor 33 and the lower limit sensor 34 are respectively in electric control connection with the winding motor 11, when the tension pulley 32 rises to the position of the upper limit sensor 33, the difference between the discharging speed of the equipment in the previous process and the winding speed of the winding device 10 is smaller, the U-shaped drop height of the carrier tape is smaller, and the upper limit sensor 33 sends a control signal to the winding motor 11 and controls the winding motor 11 to decelerate, so that the risk that the carrier tape is broken due to the excessively high winding speed of the carrier tape of the winding device is; on the contrary, when the tension pulley 32 descends to the position of the lower limit sensor 34, the difference between the discharging speed of the previous process equipment and the winding speed of the winding device 10 is large, the U-shaped vertical height of the carrier tape is high, and the lower limit sensor 34 sends a control signal to the winding motor 11 and controls the winding motor 11 to accelerate, so that the influence on the normal discharging operation of the previous process equipment due to too much material stored by the tension pulley device is avoided; therefore, the carrier tape can be reliably and stably wound and received in a relatively constant tension range. In practical production application, the tension pulley 32 with different weights is adopted or weights with different weights are additionally hung on the tension pulley 32 to realize the adjustment of constant tension.
The tension wheel 32 is arranged on the bracket 31 in a vertically floating manner through a floating support mechanism, the floating support mechanism comprises a floating plate 35 and a bearing rail 36, the bearing rail 36 is fixedly arranged on the floating plate 35, the tension wheel 32 is rotatably arranged on the floating plate 35 and is positioned above the bearing rail 36, a floating slide rail 37 extending vertically is fixedly arranged on the front side surface of the bracket 31, and the floating plate 35 is connected to the floating slide rail 37 in a sliding manner; the carrier tape from the discharge end of the previous process equipment is wound into a reel by a winding device after passing between the tension pulley 32 and the bearing rail 36, and the carrier tape is tensioned under the action of the dead weight of the tension pulley 32 all the time.
The tension wheel device 30 further comprises a tension cylinder 38 and a floating connecting block 39, the tension cylinder 38 is fixedly arranged at the top end of the rear side of the bracket 31, the end part of a guide rod of the tension cylinder 38 faces downwards, one end of the floating connecting block 39 is fixedly connected with the floating plate 35, and the other end of the floating connecting block is movably connected with the end part of the guide rod of the tension cylinder 38; a material returning level sensor 311 is also arranged on the bracket 31 and above the upper limit sensor 33, and the material returning level sensor 311 is electrically connected with the winding motor 11; when the carrier tape needs to be returned, the tension cylinder 38 drives the tension pulley 32 to ascend to the position of the upper limit sensor 33 through the floating connecting block 39, so that the carrier tape tends to be in a horizontal state, meanwhile, the upper limit sensor 33 sends a control signal to the winding motor 11, the winding motor 11 is controlled to rotate reversely, and the material returning operation of the carrier tape is achieved.
The floating connecting block 39 is L-shaped, one end of the L-shaped floating connecting block 39 is fixedly connected with the side face of the floating plate 35, the other end of the L-shaped floating connecting block 39 is provided with a sliding cavity, a guide rod of the tension cylinder 38 penetrates through the sliding cavity of the floating connecting block 39, the end part of the guide rod is fixedly connected with the lifting nut 310, when the winding device 10 continuously winds and receives materials for the carrier belt, the guide rod of the tension cylinder 38 is always in an extending state, and at the moment, the tension wheel 32 falls down under the action of self gravity and applies tension to the; when the carrier tape needs to be returned, the guide rod of the tension cylinder 38 retracts and resets, the lifting nut 310 drives the floating connecting block 39, and the whole tension wheel 32 and the bearing rail 36 are driven by the floating plate 35 to move upwards together until the carrier tape is close to a horizontal state, so that the carrier tape is returned conveniently.
A plurality of tension pulley devices 30 can be arranged, and a plurality of tension pulley devices 10 are sequentially arranged between the discharge end of the previous process equipment and the winding device 10 in parallel; the setting of a plurality of tension pulley devices 30 can adjust carrier band storage length according to the practical application requirement, improves the suitability.
The winding device 10 is integrally installed on the vertical lifting mechanism 40, a winding motor 11 of the winding device is electrically connected with the vertical lifting mechanism 40, and the winding motor 11 drives the winding shaft 12 to rotate once, namely, the vertical lifting mechanism 40 drives the winding device 10 to integrally move down by a distance of one carrier tape thickness d after the carrier tape is wound on the reel by one turn.
The utility model discloses the system still includes compression bar device 50, compression bar device 50 includes tension bar 51 and revolving cylinder 52, and one end of tension bar 51 is connected with the output of revolving cylinder 52, and revolving cylinder 52 drive tension bar 51 rotates and makes tension bar 51 can stretch into between two baffles of the reel above coiling mechanism 10 and tangent and compress tightly all the time with the excircle of the carrier band around coiling on the empty reel; the tension rod 51 is always in rolling contact with the excircle of the carrier tape wound on the reel in the process that the carrier tape is wound on the reel under the drive of the winding device 10;
the pressure lever device 50 further comprises a limiting rod 53, the limiting rod 53 is connected with the tension rod 51 through a connecting block 54, the limiting rod 53 is parallel to the tension rod 51, the tension rod 51 is located on the front side of the limiting rod 53, and when the tension rod 51 extends into a space between two baffles of the reel, the limiting rod 53 presses the front baffle of the reel from the front side.
The detailed description of the embodiments of the present invention has been provided, but the present invention is only the preferred embodiments of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should be covered by the patent of the present invention.
Claims (8)
1. The utility model provides a carrier band tension control system for automatic material is received around rolling up, its includes the coiling mechanism, the coiling mechanism includes rolling motor and rolling axle for the reel detachably of rolling carrier band assembles in on the rolling axle, thereby rolling motor can drive rolling axle and reel rotate thereby will come from the carrier band rolling of preceding process equipment discharge end to the reel on, its characterized in that: the automatic belt winding device comprises a tension pulley device, wherein the tension pulley device comprises a support, a tension pulley and a control sensor, the support is fixedly arranged between a discharge end of a previous process device and a winding device, the control sensor comprises an upper limit sensor and a lower limit sensor which are linearly arranged on the support from top to bottom, the tension pulley is rotatably arranged on the support and can float up and down between the upper limit sensor and the lower limit sensor, the tension pulley is in rolling contact with a carrier belt and the carrier belt is tensioned under the self-weight pressing action of the tension pulley in the process that the discharge end of the previous process device continuously discharges materials and the winding device continuously winds the carrier belt, the winding motor is a servo motor, and the upper limit sensor and the lower limit sensor are respectively in electric control connection with the winding motor.
2. A carrier tape tension control system for automatic coil stock as recited in claim 1, wherein: the tension wheel is arranged on the bracket in a vertically floating manner through a floating support mechanism, the floating support mechanism comprises a floating plate and a bearing track, the bearing track is fixedly arranged on the floating plate, the tension wheel is rotatably arranged on the floating plate and is positioned above the bearing track, a floating slide rail extending vertically is fixedly arranged on the front side surface of the bracket, and the floating plate is connected to the floating slide rail in a sliding manner; the carrier tape from the discharge end of the equipment in the previous process is wound into a reel by a winding device after passing through between the tension pulley and the bearing track, and the carrier tape is tensioned under the action of the dead weight of the tension pulley.
3. A carrier tape tension control system for automatic coil stock as recited in claim 2, wherein: the tension pulley device still includes tension cylinder and unsteady connecting block, tension cylinder set firmly in the rear side top of support and tension cylinder's guide arm tip down, unsteady connecting block one end with unsteady board rigid coupling, the other end with tension cylinder's guide arm tip swing joint, still be equipped with material returned level sensor on the support and above lieing in the upper limit position sensor, material returned level sensor with the automatically controlled connection of coiling motor.
4. A carrier tape tension control system for automatic roll-to-roll material, as claimed in claim 3, wherein: the floating connecting block is L-shaped, one end of the floating connecting block which is L-shaped is fixedly connected with the side face of the floating plate, the other end of the floating connecting block is provided with a sliding cavity, a guide rod of the tension cylinder penetrates through the sliding cavity of the floating connecting block, a lifting nut is fixedly connected with the end part of the guide rod, when the guide rod of the tension cylinder extends out, the tension wheel only falls under the self-weight action, and when the guide rod of the tension cylinder retracts and resets, the lifting nut drives the floating connecting block and drives the whole tension wheel and the bearing track to move upwards together through the floating plate.
5. A carrier tape tension control system for automatic roll-to-roll material feeding as claimed in any one of claims 1 to 4, wherein: the tension pulley device is provided with a plurality of tension pulley devices, and the plurality of tension pulley devices are sequentially arranged between the discharge end of the previous process equipment and the winding device in parallel.
6. A carrier tape tension control system for automatic roll-to-roll material, as claimed in claim 5, wherein: the winding device is installed on a vertical lifting mechanism, a winding motor of the winding device is electrically connected with the vertical lifting mechanism, the winding motor drives a winding shaft to rotate every circle, namely, the length of each circle of winding of the carrier tape on the reel, and the vertical lifting mechanism drives the winding device to integrally move down by the distance of one carrier tape thickness d.
7. A carrier tape tension control system for automatic roll-to-roll material as claimed in any one of claims 1 to 4 or 6, wherein: the device also comprises a pressure lever device, wherein the pressure lever device comprises a tension rod and a rotary cylinder, one end of the tension rod is connected with the output end of the rotary cylinder, and the rotary cylinder drives the tension rod to rotate so that the tension rod can extend between two baffles of an overhead reel of the winding device and is tangent and pressed with the excircle of a carrier tape wound on the overhead reel all the time; the carrier band is in the process of winding to the reel under the drive of coiling mechanism the tension bar is in rolling contact with the excircle of the carrier band wound to the reel all the time.
8. A carrier tape tension control system for automatically winding a web of material as recited in claim 7, wherein: the compression bar device further comprises a limiting rod, the limiting rod is connected with the tension rod through a connecting block and is parallel to the tension rod, the tension rod is located on the front side of the limiting rod, and when the tension rod stretches into the space between the two baffles of the reel, the limiting rod compresses the front baffle of the reel from the front side face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920921335.5U CN210339732U (en) | 2019-06-19 | 2019-06-19 | Carrier tape tension control system for automatically winding and receiving materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920921335.5U CN210339732U (en) | 2019-06-19 | 2019-06-19 | Carrier tape tension control system for automatically winding and receiving materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210339732U true CN210339732U (en) | 2020-04-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920921335.5U Expired - Fee Related CN210339732U (en) | 2019-06-19 | 2019-06-19 | Carrier tape tension control system for automatically winding and receiving materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210339732U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104478A (en) * | 2019-06-19 | 2019-08-09 | 无锡山藤精密科技有限公司 | Carrier band tension control system for automatic spooling rewinding |
| CN117775832A (en) * | 2024-02-26 | 2024-03-29 | 合肥安迅精密技术有限公司 | Method and system for ensuring tension of material film in feeding process of flyer and storage medium |
-
2019
- 2019-06-19 CN CN201920921335.5U patent/CN210339732U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110104478A (en) * | 2019-06-19 | 2019-08-09 | 无锡山藤精密科技有限公司 | Carrier band tension control system for automatic spooling rewinding |
| CN117775832A (en) * | 2024-02-26 | 2024-03-29 | 合肥安迅精密技术有限公司 | Method and system for ensuring tension of material film in feeding process of flyer and storage medium |
| CN117775832B (en) * | 2024-02-26 | 2024-05-07 | 合肥安迅精密技术有限公司 | Method and system for ensuring tension of material film in feeding process of flyer and storage medium |
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200417 Termination date: 20210619 |
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| CF01 | Termination of patent right due to non-payment of annual fee |