CN202886888U - Controller for fully computerized flat knitting machine - Google Patents
Controller for fully computerized flat knitting machine Download PDFInfo
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- CN202886888U CN202886888U CN 201220606316 CN201220606316U CN202886888U CN 202886888 U CN202886888 U CN 202886888U CN 201220606316 CN201220606316 CN 201220606316 CN 201220606316 U CN201220606316 U CN 201220606316U CN 202886888 U CN202886888 U CN 202886888U
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Abstract
The utility model relates to a controller for a fully computerized flat knitting machine. The controller comprises a special driver for the computerized flat knitting machine, an operation box and a machine head control box, wherein the special driver for the computerized flat knitting machine comprises a power converting unit, a CPU (central processing unit) control unit, a main servo motor drive unit, a moving-bed servo motor drive unit, a batching stepper motor drive unit, an auxiliary batching alternating current motor driver, a yam feeding machine alternating current motor driver, and a sensor interface unit; and the special driver for the computerized flat knitting machine is used for implementing all control on a main servo motor, a moving-bed servo motor, a batching stepper motor, an auxiliary batching alternating current motor and left and right yam feeding machine alternating current motors, and detection on an outer sensor. The controller has the advantages of being simple and reasonable in structure, reducing a great deal of wiring, being convenient to maintain, reliable in system operation and low in cost, and saving more energy.
Description
Technical field
The utility model relates to a kind of full-computer flat knitting machine controller that adopts the Computerized flat knitting machine special purpose driver.
Background technology
Straight-bar machines is exactly flat knitting machine, and computer-controlled flat knitting machine is a kind of braider that adopts microcomputerized control, can automatically finish the braiding of woollen sweater garment piece.China is as traditional wool spinning big country, because labor shortage in recent years, traditional hand knitting machine by manual working has been difficult to survive again, is badly in need of industrial upgrading.
The full-computer flat knitting machine controller is as the larger product of a kind of Technology Density, it relates to man-machine interface, motion control, power management, servo driving, step motor control etc., all the time, domestic all being difficult in this field broken through, with sizable gap is abroad arranged, but recent years by the effort of domestic several companies, situation is to some extent improvement, but the technical scheme that the product of these several companies adopts still also has very large gap with the foreign latest technology; The scheme of these several companies is substantially similar, all be the commercial main servo driver of motor that adopts CPU of own design to control mainboard to connect respectively other manufacturer production, move a servo driver of motor, batching stepper motor driver, UPS uninterrupted power source and positive and negative 24V, 12V, four commercial Switching Power Supplies of 5V etc. are finished the control of straight-bar machines by head control box and operating case.The advantage of this mode is that the exploitation of controller is simple, but its shortcoming is bulky, the complex circuit of whole controller, maintenance difficult, and power consumption, cost is high, poor reliability
,Controller is semi-manufacture, needs the driver of other companies of outsourcing of producer to install; Simultaneously, system's Installation and Debugging all need the professional and technical personnel, and after sale service is loaded down with trivial details, and this has restricted the penetration and promotion of full-computer flat knitting machine to a great extent.
Summary of the invention
The purpose of this utility model is for above-mentioned existing problems, provide a kind of simple and reasonable, reduce the full-computer flat knitting machine controller that a large amount of wiring, convenient for maintaining are safeguarded, system is reliable, cost is lower, more energy-conservation.
Principle of work of the present utility model: by the action data that edition system generates needs braided fabric of beating of host computer, copy in the operating case by USB flash disk, behind the system boot, powered to operating case by described Computerized flat knitting machine special purpose driver, the Computerized flat knitting machine special purpose driver begins self check, after System self-test is normal, wait for user's operation, the user spurs the startup handle, tell operating case by the detection of Computerized flat knitting machine special purpose driver by the CAN communication, tell Computerized flat knitting machine special purpose driver and head control box by the CAN communication again after operating case is judged, begin to carry out the braiding of fabric by the straight-bar machines controller according to the braid movement file of original importing according to action data control straight-bar machines.
The purpose of this utility model be achieved in that comprise that Computerized flat knitting machine special purpose driver, operating case and head control box, described Computerized flat knitting machine special purpose driver comprise power conversion unit, CPU control module, main servo electric-motor drive unit, move a driven by servomotor unit, batching stepper motor driver element, secondary batching alternating current generator drive, the Yarn feeder alternating current generator drives and sensor interface unit;
Described power conversion unit comprises direct current 310V output voltage that AC power monitors through zero passage detection, rectification, busbar voltage in order for the main servo electric-motor drive unit and moves a driven by servomotor unit and outside 24V Switching Power Supply; Another road output that busbar voltage monitors is through Switching Power Supply conversion output direct current 15V, 12V, 5V power supply; AC power another road output after zero passage detects is for secondary batching alternating current generator driver element and Yarn feeder alternating current generator driver element;
Described main servo electric-motor drive unit comprises main servo IGBT power drive part and main servo encoder interfaces, and the main servo encoder interfaces is that main servo connects outside specific coding communication interface; One group of 5V out-put supply of Switching Power Supply offers the main servo encoder interfaces; The 15V out-put supply of Switching Power Supply connects IGBT power drive part, the AD analog to digital conversion interface of CPU reads the main servo electric machine phase current by current sensor, the position data that CPU feeds back according to this value and the required phase current of current control and external encoder, determine again the working current of main servo motor by the FOC algorithm, control signal corresponding to three-phase PWM output unit one output through CPU arrives IGBT intelligent power driver module again, drives the main servo motor;
A described driven by servomotor unit that moves comprises and moves the servo IGBT power drive of bed part and move an encoded servo device interface, moves an encoded servo device interface for moving an outside specific coding communication interface of servo connection; One group of 5V out-put supply of Switching Power Supply offers and moves an encoded servo device interface; The 15V out-put supply of Switching Power Supply connects IGBT power drive part, the AD analog to digital conversion interface of CPU reads by current sensor and moves a servomotor phase current, the position data that CPU feeds back according to this value and the required phase current of current control and external encoder, determine to move again the working current of a servomotor by the FOC algorithm, control signal corresponding to three-phase PWM output unit two outputs through CPU arrives IGBT intelligent power driver module again, drives and moves a servomotor;
Described batching stepper motor driver element comprises that control power supply, stepper motor working power monitor and the dual H-bridge driving circuit; The 5V out-put supply of Switching Power Supply connects the dual H-bridge control circuit; CPU provides current needed speed, torque and direction signal to the dual H-bridge control circuit, worked by the dual H-bridge Driving Stepping Motor by this circuit, whether the power monitoring unit current stepper motor of charge of overseeing is working properly, this circuit feedback supervisory signal provides warning and guard signal to CPU by CPU;
Described secondary batching alternating current generator drives and the driving of Yarn feeder alternating current generator is operatively connected to CPU, the AC power zero cross detection circuit provides the phase-locking signal to CPU, and CPU realizes secondary batching alternating current generator, the shutdown of left and right sides Yarn feeder alternating current generator, the control of speed according to this signal controlling bidirectional triode thyristor; Simultaneously, the phase-locking signal that CPU also provides according to this zero cross detection circuit judges whether the outside cuts off the power supply, and the data of cutting off the power supply are preserved;
Described sensor interface unit comprises that the 12V out-put supply of Switching Power Supply is connected to the working temperature monitoring circuit of this controller, running status indicating circuit, I/O interface, debugging interface, expansion interface and CAN communication interface; The I/O interface connects outside each sensor, and debugging interface is for producing debugging and offline debugger work usefulness, and expansion interface is later Function Extension usefulness, and the CAN communication interface is attended operation box and head control box.
The utility model, by described Computerized flat knitting machine special purpose driver realize all main servo motors, move a servomotor, batching stepper motor, secondary batching alternating current generator, whole controls of left and right sides Yarn feeder alternating current generator and the detection of external sensor.
The utility model, described operating case are controlled described Computerized flat knitting machine special purpose driver; Operating case is system operation core, the control that provides input, editor, management and the run action of supervision, motion test, the motion file of system interface, system works to judge, and finish respective action by the head control box.
The utility model, described head control box comprise Power conversion board and head control drive plate, and the correspondence that is sended over by the CAN communication by operating case drives the action naming of head, and it is respective action with corresponding command interpretation that head control drive plate receives order; The corresponding electromagnet of head control drive plate, density stepper motor, slide cam selector are finished the action of corresponding braided fabric.
The utility model, behind the system boot, powered for operating case by described Computerized flat knitting machine special purpose driver, the Computerized flat knitting machine special purpose driver begins self check, after System self-test is normal, waits for user's operation, the user spurs the startup handle, tell operating case by the detection of Computerized flat knitting machine special purpose driver by the CAN communication, tell Computerized flat knitting machine special purpose driver and head control box by the CAN communication again after operating case is judged, allow straight-bar machines begin to carry out the braiding of fabric according to the braid movement file of original importing.
The utility model, described Computerized flat knitting machine special purpose driver program begins, initialization I/O and CAN communication, after judgement has master routine and primary power normally, the initialization timing device, after normal by the FOC initiation parameter, by the CAN communication command, control main servo motor, move a servomotor, batching stepper motor, the action of left and right sides Yarn feeder alternating current generator; Realize that simultaneously external fault detects, busbar voltage detects, system temperature detects, button detects and the stepper motor working current detects.
The beneficial effects of the utility model are:
1), whole controller only has Computerized flat knitting machine special purpose driver, nose controller and three of operating cases to form module, need not the UPS uninterrupted power source, also need not 12V power supply, two commercial Switching Power Supplies of 5V power supply, make the straight-bar machines controller become a complete product, volume-diminished 2/3; Because product modular no longer needs user oneself assembling, system installs so no longer needs the professional and technical personnel, and after sale service is simpler, and the application popularization popularization of full-computer flat knitting machine is more prone to;
2), the Computerized flat knitting machine special purpose driver has been reduced system board; The head control box has been introduced present up-to-date technology, makes head control box integrated level higher, more perfect; Operating case has been introduced the indignant thought of virtual memory, and system need to just can smoothly not worked under very high frequency of operation, has improved the anti-interference of system;
3), the Computerized flat knitting machine special purpose driver realize all main servo motors, move a servomotor, batching stepper motor, secondary batching alternating current generator, the control of left and right sides Yarn feeder alternating current generator and the detection of external sensor.
The utility model, have simple and reasonable, reduce the advantage that a large amount of wiring, convenient for maintaining are safeguarded, system is reliable, cost is lower, more energy-conservation.
Following embodiment is further described the utility model by reference to the accompanying drawings.
Description of drawings
Fig. 1 is the fundamental diagram of an embodiment of the present utility model;
Fig. 2 is the driver procedure workflow synoptic diagram of Fig. 1 embodiment.
Embodiment
With reference to Fig. 1, present embodiment is a kind of full-computer flat knitting machine controller, comprise Computerized flat knitting machine special purpose driver, operating case and head control box, described Computerized flat knitting machine special purpose driver comprises power conversion unit, CPU control module, main servo electric-motor drive unit, moves a driven by servomotor unit, batching stepper motor driver element, secondary batching alternating current generator drive, the Yarn feeder alternating current generator drives and sensor interface unit; Described power conversion unit comprises ~ direct current 310V output voltage that the 220V AC power monitors through zero passage detection, rectification, busbar voltage in order is for the main servo electric-motor drive unit and move a driven by servomotor unit and outside 24V Switching Power Supply; Another road output that busbar voltage monitors is through Switching Power Supply conversion output direct current 15V, 12V, 5V power supply; Another road output after zero passage detects of ~ 220V AC power is for secondary batching alternating current generator driver element and Yarn feeder alternating current generator driver element; Described main servo electric-motor drive unit comprises main servo IGBT power drive part and main servo encoder interfaces, and the main servo encoder interfaces is that main servo connects outside specific coding communication interface; One group of 5V out-put supply of Switching Power Supply offers the main servo encoder interfaces; The 15V out-put supply of Switching Power Supply connects IGBT power drive part, the AD analog to digital conversion interface of CPU reads the main servo electric machine phase current by current sensor, the position data that CPU feeds back according to this value and the required phase current of current control and external encoder, determine again the working current of main servo motor by the FOC algorithm, control signal corresponding to three-phase PWM output unit one output through CPU arrives IGBT intelligent power driver module again, drives the main servo motor; A described driven by servomotor unit that moves comprises and moves the servo IGBT power drive of bed part and move an encoded servo device interface, moves an encoded servo device interface for moving an outside specific coding communication interface of servo connection; One group of 5V out-put supply of Switching Power Supply offers and moves an encoded servo device interface; The 15V out-put supply of Switching Power Supply connects IGBT power drive part, the AD analog to digital conversion interface of CPU reads by current sensor and moves a servomotor phase current, the position data that CPU feeds back according to this value and the required phase current of current control and external encoder, determine to move again the working current of a servomotor by the FOC algorithm, control signal corresponding to three-phase PWM output unit two outputs through CPU arrives IGBT intelligent power driver module again, drives and moves a servomotor; Described batching stepper motor driver element comprises that control power supply, stepper motor working power monitor and the dual H-bridge driving circuit; The 5V out-put supply of Switching Power Supply connects the dual H-bridge control circuit; CPU provides current needed speed, torque and direction signal to the dual H-bridge control circuit, worked by the dual H-bridge Driving Stepping Motor by this circuit, whether the power monitoring unit current stepper motor of charge of overseeing is working properly, this circuit feedback supervisory signal provides warning and guard signal to CPU by CPU; Described secondary batching alternating current generator drives and the driving of Yarn feeder alternating current generator is operatively connected to CPU, ~ 220V AC power zero cross detection circuit provides the phase-locking signal to CPU, and CPU realizes secondary batching alternating current generator, the shutdown of left and right sides Yarn feeder alternating current generator, the control of speed according to this signal controlling bidirectional triode thyristor; Simultaneously, the phase-locking signal that CPU also provides according to this zero cross detection circuit judges whether the outside cuts off the power supply, and the data of cutting off the power supply are preserved; Described sensor interface unit comprises that the 12V out-put supply of Switching Power Supply is connected to the working temperature monitoring circuit of this controller, running status indicating circuit, I/O interface, debugging interface, expansion interface and CAN communication interface; The I/O interface connects outside each sensor, and debugging interface is for producing debugging and offline debugger work usefulness, and expansion interface is later Function Extension usefulness, and the CAN communication interface is attended operation box and head control box; By described Computerized flat knitting machine special purpose driver realize all main servo motors, move a servomotor, batching stepper motor, secondary batching alternating current generator, whole controls of left and right sides Yarn feeder alternating current generator and the detection of external sensor; Described operating case is controlled described Computerized flat knitting machine special purpose driver; Operating case is system operation core, the control that provides input, editor, management and the run action of supervision, motion test, the motion file of system interface, system works to judge, and finish respective action by the head control box; Described head control box comprises Power conversion board and head control drive plate, and the correspondence that is sended over by the CAN communication by operating case drives the action naming of head, and it is respective action with corresponding command interpretation that head control drive plate receives order; The corresponding electromagnet of head control drive plate, density stepper motor and slide cam selector are finished the action of corresponding braided fabric.The utility model, behind the system boot, powered for operating case by described Computerized flat knitting machine special purpose driver, the Computerized flat knitting machine special purpose driver begins self check, after System self-test is normal, waits for user's operation, the user spurs the startup handle, tell operating case by the detection of Computerized flat knitting machine special purpose driver by the CAN communication, tell Computerized flat knitting machine special purpose driver and head control box by the CAN communication again after operating case is judged, allow straight-bar machines begin to carry out the braiding of fabric according to the braid movement file of original importing.
Program work flow process of the present utility model: with reference to Fig. 2, program begins, initialization I/O and CAN communication, after judgement has master routine and primary power normally, the initialization timing device, after normal by the FOC initiation parameter, by the CAN communication command, control main servo motor, move a servomotor, batching stepper motor, the action of left and right sides Yarn feeder alternating current generator; Realize that simultaneously external fault detects, busbar voltage detects, system temperature detects, button detects and the stepper motor working current detects.
As replacement scheme of the present utility model, main control system can not integrated batching stepper motor driver, and adopts commercial batching stepper motor driver, the complicated a little point of structure just, but also simple than existing disclosed technical scheme.
Claims (6)
1. full-computer flat knitting machine controller, it is characterized in that: comprise Computerized flat knitting machine special purpose driver, operating case and head control box, described Computerized flat knitting machine special purpose driver comprises power conversion unit, CPU control module, main servo electric-motor drive unit, moves a driven by servomotor unit, batching stepper motor driver element, secondary batching alternating current generator drive, the Yarn feeder alternating current generator drives and sensor interface unit;
Described power conversion unit comprises direct current 310V output voltage that AC power monitors through zero passage detection, rectification, busbar voltage in order for the main servo electric-motor drive unit and moves a driven by servomotor unit and outside 24V Switching Power Supply; Another road output that busbar voltage monitors is through Switching Power Supply conversion output direct current 15V, 12V, 5V power supply; AC power another road output after zero passage detects is for secondary batching alternating current generator driver element and Yarn feeder alternating current generator driver element;
Described main servo electric-motor drive unit comprises main servo IGBT power drive part and main servo encoder interfaces, and the main servo encoder interfaces is that main servo connects outside specific coding communication interface; One group of 5V out-put supply of Switching Power Supply offers the main servo encoder interfaces; The 15V out-put supply of Switching Power Supply connects IGBT power drive part, the AD analog to digital conversion interface of CPU reads the main servo electric machine phase current by current sensor, the position data that CPU feeds back according to this value and the required phase current of current control and external encoder, determine again the working current of main servo motor by the FOC algorithm, control signal corresponding to three-phase PWM output unit one output through CPU arrives IGBT intelligent power driver module again, drives the main servo motor;
A described driven by servomotor unit that moves comprises and moves the servo IGBT power drive of bed part and move an encoded servo device interface, moves an encoded servo device interface for moving an outside specific coding communication interface of servo connection; One group of 5V out-put supply of Switching Power Supply offers and moves an encoded servo device interface; The 15V out-put supply of Switching Power Supply connects IGBT power drive part, the AD analog to digital conversion interface of CPU reads by current sensor and moves a servomotor phase current, the position data that CPU feeds back according to this value and the required phase current of current control and external encoder, determine to move again the working current of a servomotor by the FOC algorithm, control signal corresponding to three-phase PWM output unit two outputs through CPU arrives IGBT intelligent power driver module again, drives and moves a servomotor;
Described batching stepper motor driver element comprises that control power supply, stepper motor working power monitor and the dual H-bridge driving circuit; The 5V out-put supply of Switching Power Supply connects the dual H-bridge control circuit; CPU provides current needed speed, torque and direction signal to the dual H-bridge control circuit, worked by the dual H-bridge Driving Stepping Motor by this circuit, whether the power monitoring unit current stepper motor of charge of overseeing is working properly, this circuit feedback supervisory signal provides warning and guard signal to CPU by CPU;
Described secondary batching alternating current generator drives and the driving of Yarn feeder alternating current generator is operatively connected to CPU, the AC power zero cross detection circuit provides the phase-locking signal to CPU, and CPU realizes secondary batching alternating current generator, the shutdown of left and right sides Yarn feeder alternating current generator, the control of speed according to this signal controlling bidirectional triode thyristor; Simultaneously, the phase-locking signal that CPU also provides according to this zero cross detection circuit judges whether the outside cuts off the power supply, and the data of cutting off the power supply are preserved;
Described sensor interface unit comprises that the 12V out-put supply of Switching Power Supply is connected to the working temperature monitoring circuit of this controller, running status indicating circuit, I/O interface, debugging interface, expansion interface and CAN communication interface; The I/O interface connects outside each sensor, and debugging interface is for producing debugging and offline debugger work usefulness, and expansion interface is later Function Extension usefulness, and the CAN communication interface is attended operation box and head control box.
2. full-computer flat knitting machine controller according to claim 1 is characterized in that: by described Computerized flat knitting machine special purpose driver realize all main servo motors, move a servomotor, batching stepper motor, secondary batching alternating current generator, whole controls of left and right sides Yarn feeder alternating current generator and the detection of external sensor.
3. full-computer flat knitting machine controller according to claim 1, it is characterized in that: described operating case is controlled described Computerized flat knitting machine special purpose driver; Operating case is system operation core, the control that provides input, editor, management and the run action of supervision, motion test, the motion file of system interface, system works to judge, and finish respective action by the head control box.
4. full-computer flat knitting machine controller according to claim 3, it is characterized in that: described head control box comprises Power conversion board and head control drive plate, the correspondence that is sended over by the CAN communication by operating case drives the action naming of head, and it is respective action with corresponding command interpretation that head control drive plate receives order; The corresponding electromagnet of head control drive plate, density stepper motor, slide cam selector are finished the action of corresponding braided fabric.
5. according to claim 1,2,3 or 4 described full-computer flat knitting machine controllers, it is characterized in that: behind the system boot, powered to operating case by described Computerized flat knitting machine special purpose driver, the Computerized flat knitting machine special purpose driver begins self check, after System self-test is normal, wait for user's operation, the user spurs the startup handle, tell operating case by the detection of Computerized flat knitting machine special purpose driver by the CAN communication, tell Computerized flat knitting machine special purpose driver and head control box by the CAN communication again after operating case is judged, allow straight-bar machines begin to carry out the braiding of fabric according to the braid movement file of original importing.
6. full-computer flat knitting machine controller according to claim 5, it is characterized in that: described Computerized flat knitting machine special purpose driver program begins, initialization I/O and CAN communication, after judgement has master routine and primary power normally, the initialization timing device, after normal by the FOC initiation parameter, by the CAN communication command, control main servo motor, move a servomotor, batching stepper motor, the action of left and right sides Yarn feeder alternating current generator; Realize that simultaneously external fault detects, busbar voltage detects, system temperature detects, button detects and the stepper motor working current detects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220606316 CN202886888U (en) | 2012-11-15 | 2012-11-15 | Controller for fully computerized flat knitting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220606316 CN202886888U (en) | 2012-11-15 | 2012-11-15 | Controller for fully computerized flat knitting machine |
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| CN202886888U true CN202886888U (en) | 2013-04-17 |
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| CN 201220606316 Withdrawn - After Issue CN202886888U (en) | 2012-11-15 | 2012-11-15 | Controller for fully computerized flat knitting machine |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102929168A (en) * | 2012-11-15 | 2013-02-13 | 揭阳市南星机械有限公司 | Controller for full computerized flat knitting machine |
| CN104298132A (en) * | 2013-07-16 | 2015-01-21 | 上海电气集团股份有限公司 | Computer flat knitting machine control system |
| CN105048657A (en) * | 2015-06-29 | 2015-11-11 | 浙江京马电机有限公司 | Brushless DC motor used for intelligent integrated control food rubbish processor |
| CN105375840A (en) * | 2015-12-25 | 2016-03-02 | 重庆红江机械有限责任公司 | Closed-loop control type unipolar stepper motor controller |
| CN106811858A (en) * | 2017-01-03 | 2017-06-09 | 福建睿能科技股份有限公司 | A kind of computer flat knitting machine |
| CN109634178A (en) * | 2018-12-19 | 2019-04-16 | 嘉兴大豪科技有限公司 | A kind of sprinkler electric-controlled plate |
-
2012
- 2012-11-15 CN CN 201220606316 patent/CN202886888U/en not_active Withdrawn - After Issue
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102929168A (en) * | 2012-11-15 | 2013-02-13 | 揭阳市南星机械有限公司 | Controller for full computerized flat knitting machine |
| CN102929168B (en) * | 2012-11-15 | 2014-08-06 | 揭阳市南星机械有限公司 | Controller for full computerized flat knitting machine |
| CN104298132A (en) * | 2013-07-16 | 2015-01-21 | 上海电气集团股份有限公司 | Computer flat knitting machine control system |
| CN105048657A (en) * | 2015-06-29 | 2015-11-11 | 浙江京马电机有限公司 | Brushless DC motor used for intelligent integrated control food rubbish processor |
| CN105375840A (en) * | 2015-12-25 | 2016-03-02 | 重庆红江机械有限责任公司 | Closed-loop control type unipolar stepper motor controller |
| CN106811858A (en) * | 2017-01-03 | 2017-06-09 | 福建睿能科技股份有限公司 | A kind of computer flat knitting machine |
| CN106811858B (en) * | 2017-01-03 | 2020-07-07 | 福建睿能科技股份有限公司 | Computer flat knitting machine |
| CN109634178A (en) * | 2018-12-19 | 2019-04-16 | 嘉兴大豪科技有限公司 | A kind of sprinkler electric-controlled plate |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20130417 Effective date of abandoning: 20140806 |
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| RGAV | Abandon patent right to avoid regrant |