CN108342824B - Needle selection control device with fault indication and needle selector - Google Patents
Needle selection control device with fault indication and needle selector Download PDFInfo
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- CN108342824B CN108342824B CN201810297631.2A CN201810297631A CN108342824B CN 108342824 B CN108342824 B CN 108342824B CN 201810297631 A CN201810297631 A CN 201810297631A CN 108342824 B CN108342824 B CN 108342824B
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- needle
- coil
- selector
- open circuit
- programmable logic
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
- D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
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- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
- D04B15/66—Devices for determining or controlling patterns ; Programme-control arrangements
- D04B15/68—Devices for determining or controlling patterns ; Programme-control arrangements characterised by the knitting instruments used
- D04B15/78—Electrical devices
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
- D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
- D04B35/18—Indicating, warning, or safety devices, e.g. stop motions responsive to breakage, misplacement, or malfunctioning of knitting instruments
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention relates to a needle selection control device with fault indication and a needle selector. The needle selecting control device comprises a control panel, an interface distribution plate, a power module and a plurality of needle selecting devices, wherein the input end of the interface distribution plate is connected with the control panel, the power module is connected with the interface distribution plate, the plurality of needle selecting devices are respectively connected with the output end of the interface distribution plate, each needle selecting device comprises a programmable logic control unit and a fault indicating device, the fault indicating device alarms and indicator lamps, a plurality of open circuit detection devices for detecting whether open circuit faults occur on a plurality of coil combining pieces in a one-to-one correspondence mode, and the open circuit detection devices and the alarm indicator lamps are connected with the programmable logic control unit. Through addding fault indication device, when the coil of a certain needle selector breaks circuit the trouble, then this needle selector can send the warning instruction, no longer need the manual detection judge, and maintenance personal can check whether the coil is unusual very intuitively, makes things convenient for maintenance personal to judge the fault point, practices thrift manual work and time, promotes the availability factor of machine.
Description
Technical Field
The invention relates to a needle selecting control device with fault indication and a needle selecting device, which are applied to a jacquard circular knitting machine.
Background
Jacquard circular knitting machines are becoming increasingly popular because of their ability to weave more abundant patterns. The needle selector is an important part of the jacquard circular knitting machine, and in the weaving process, the motion of the needle selector is controlled by a control system according to the design of the fabric pattern, so that a jacquard sheet on the jacquard circular knitting machine is driven to move, and a thread changing mechanism is used for thread changing weaving at proper time. The selector is a transducer for converting an electric signal into a magnetic force to actuate the selector. The jacquard circular knitting machine is provided with a plurality of needle selectors, once one coil of one needle selector breaks a circuit, the pattern of the whole fabric is damaged, and when the jacquard circular knitting machine is actually overhauled, the judgment of which needle selector breaks the circuit is very difficult and time-consuming, so that great inconvenience is brought to overhauling work, and overhauling time is greatly prolonged.
Disclosure of Invention
The invention aims to provide a needle selection control device with fault indication and a needle selector, so that the needle selector with broken circuit fault can automatically give out fault alarm, manual detection and judgment are not needed, and the maintenance time is shortened.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention provides a needle selecting control device with fault indication, which comprises a control panel, an interface distribution plate, a power module and a plurality of needle selecting devices, wherein the input end of the interface distribution plate is connected with the control panel, the power module is connected with the interface distribution plate, the plurality of needle selecting devices are respectively connected with the output end of the interface distribution plate, each needle selecting device comprises a shell, a plurality of coil combining pieces connected in the shell, and a plurality of needle selecting piece assemblies connected with the shell in a relatively swinging way, each needle selecting piece assembly comprises a needle selecting piece, the end part of the needle selecting piece extends out of the shell, and the needle selecting piece assemblies are driven to swing in a one-to-one correspondence way by the coil combining pieces. The needle selector also comprises a programmable logic control unit and a fault indicating device, wherein the fault indicating device alarms and indicates lamps, a plurality of open circuit detecting devices which correspondingly detect whether open circuit faults occur on a plurality of coil connectors one by one, the open circuit detecting devices and the alarm indicating lamps are connected with the programmable logic control unit, and the programmable logic control unit judges and controls the on and off of the alarm indicating lamps after receiving the detection result data of the open circuit detecting devices.
Further, the output ends of the interface distribution plate are respectively connected with a plurality of needle selectors through core flat wires.
Further, when the detection result data of the plurality of open circuit detection devices are all normal, the alarm indicator lamp is not on; when the detection result data of at least one open circuit detection device is abnormal, the alarm indicator light is on.
Further, the programmable logic control unit is respectively connected with the plurality of coil connectors, and the programmable logic control unit respectively sends PWM control signals to the coil connectors and the open circuit detection device according to the received control data sent by the interface distribution plate.
Further, the coil bonding member has a driving operation state defined as an instant when the coil bonding member drives the selector assembly to move to change positions, and a holding operation state defined as a state when the coil bonding member holds the selector assembly in the current position, and a duty ratio when the coil bonding member is in the driving operation state is larger than a duty ratio when the coil bonding member is in the holding operation state. By controlling the interface distribution plate, when the needle selecting piece assembly is required to change positions, a high duty cycle waveform is generated, so that the coil sucking action is fast in place, and then a low duty cycle control waveform is generated, so that the needle selecting piece assembly is maintained in the current position state. The open circuit detection device also adopts intermittent power supply synchronously with the coil. Therefore, the power consumption is reduced, the heating value of the needle selector is reduced, and the service life of the needle selector is prolonged.
Further, the end of the needle selecting piece extending out of the shell is a cutter head.
The invention also provides a needle selector with fault indication, which comprises a shell, a plurality of coil combination pieces connected in the shell, and a plurality of needle selection piece assemblies connected with the shell in a relatively swinging way, wherein each needle selection piece assembly comprises a needle selection piece with the end part extending out of the shell, the needle selection piece assemblies are driven to swing in a one-to-one correspondence way by the coil combination pieces, the needle selector also comprises a programmable logic control unit and a fault indication device, the fault indication device comprises an alarm indication lamp and a plurality of circuit breaking detection devices for detecting whether the circuit breaking faults occur in the coil combination pieces in a one-to-one correspondence way, and the circuit breaking detection devices and the alarm indication lamp are connected with the programmable logic control unit, and the programmable logic control unit judges and controls the on and off of the alarm indication lamp after receiving detection result data of the circuit breaking detection devices.
Further, when the detection result data of the plurality of open circuit detection devices are all normal, the alarm indicator lamp is not on; when the detection result data of at least one open circuit detection device is abnormal, the alarm indicator light is on.
Further, the programmable logic control unit is respectively connected with the plurality of coil connectors, and the programmable logic control unit respectively sends PWM control signals to the coil connectors and the open circuit detection device according to the received control data sent by the interface distribution plate.
Further, the coil bonding member has a driving operation state defined as an instant when the coil bonding member drives the selector assembly to move to change positions, and a holding operation state defined as a state when the coil bonding member holds the selector assembly in the current position, and a duty ratio when the coil bonding member is in the driving operation state is larger than a duty ratio when the coil bonding member is in the holding operation state. By controlling the interface distribution plate, when the needle selecting piece assembly is required to change positions, a high duty cycle waveform is generated, so that the coil sucking action is fast in place, and then a low duty cycle control waveform is generated, so that the needle selecting piece assembly is maintained in the current position state. The open circuit detection device also adopts intermittent power supply synchronously with the coil. Therefore, the power consumption is reduced, the heating value of the needle selector is reduced, and the service life of the needle selector is prolonged.
Further, the end of the needle selecting piece extending out of the shell is a cutter head.
Further, the needle selector with the fault indication is applied to the needle selection control device with the fault indication described above.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages: through addding fault indication device, when the coil of a certain needle selector breaks circuit the trouble, then this needle selector can send the warning instruction, no longer need the manual detection judge, and maintenance personal can check whether the coil is unusual very intuitively, makes things convenient for maintenance personal to judge the fault point, practices thrift manual work and time, promotes the availability factor of machine.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
FIG. 1 is a schematic diagram of a needle selection control device with fault indication in accordance with one embodiment of the present invention;
FIG. 2 is a schematic diagram of a fault detection circuit of a selector in the selector control device with fault indication shown in FIG. 1;
FIG. 3 is a schematic view of a needle selector in the needle selection control device with fault indication of FIG. 1, wherein the fault detection device is not shown;
fig. 4 is a waveform diagram of energization control of a coil coupling of a needle selector in the needle selection control device with failure indication shown in fig. 1.
Wherein reference numerals are as follows:
100. a control panel; 200. an interface distribution plate; 300. a power module; 400. a needle selector; 410. a coil bonding member; 420. a circuit break detection device; 430. a programmable logic control unit; 440. an alarm indicator light; 450. a housing; 460. a selector assembly; 461. selecting a needle sheet; 462. a cutter head.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In addition, the technical features of the different embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
Referring to fig. 1 to 4, the present embodiment provides a needle selection control device with fault indication, which includes a control panel 100, an interface distribution board 200 having an input end connected to the control panel 100, a power module 300 connected to the interface distribution board 200, and a plurality of needle selectors 400 respectively connected to output ends of the interface distribution board 200. The control panel 100 in this embodiment is a touch display screen.
In this embodiment, the output ends of the interface distribution board 200 are respectively connected to the plurality of needle selectors 400 through 20-core flat wires.
As shown in fig. 3, each of the needle selectors includes a housing 450, a plurality of coil couplers 410 coupled within the housing 450, and a plurality of selector assemblies 460 coupled to the housing 450 to be relatively swingable, each of the selector assemblies 460 including a selector 461 having an end portion protruding from the housing 450, the plurality of selector assemblies 460 being driven to swing in a one-to-one correspondence by the plurality of coil couplers 410. The end of the selector blade 461 that protrudes from the housing 450 is a bit 462.
The needle selector further comprises a programmable logic control unit 430, fault indication means. As shown in fig. 2, the fault indication device includes a plurality of circuit breaking detection devices 420 for detecting whether a circuit breaking fault occurs in a plurality of coil coupling members 410 in a one-to-one correspondence, and an alarm indication lamp 440 for giving a fault indication by turning on or off itself. The plurality of disconnection detecting devices 420 and the alarm indicator 440 are connected to the programmable logic control unit 430, and the programmable logic control unit 430 receives the detection result data of each disconnection detecting device 420, and then determines and controls the on/off of the alarm indicator 440. When at least one of the trip detection means 420 detects an abnormality, the alarm indicator 440 will issue an alarm indication. Preferably, when the detection result data of the plurality of disconnection detecting means 420 are all normal, the alarm indication lamp 440 is not lighted; when the detection result data of the at least one open circuit detection device 420 is abnormal, the alarm indication lamp 440 is lighted.
In a more preferred embodiment, the programmable logic control unit 430 is also coupled to a plurality of coil couplers 410. The programmable logic control unit 430 transmits PWM control signals to the coil bonding part 410 and the open circuit detection device 420, respectively, according to the received control data transmitted from the interface distribution board 200. The coil coupling 410 has a driving operation state defined as an instant when the coil coupling 410 drives the selector assembly 460 to move to change positions, and a holding operation state defined as a state where the coil coupling 410 holds the selector assembly 460 in the current position. Referring to fig. 4, the duty ratio when the coil coupling 410 is in the driving operation state is greater than the duty ratio when the coil coupling 410 is in the maintaining operation state. By the control of the interface distribution plate, when the needle selecting piece assembly 460 is required to change positions, namely, the time T1, a high duty cycle waveform is generated, so that the coil sucking action is fast in place, and then a low duty cycle control waveform is generated, so that the needle selecting piece assembly is maintained in the current position state. The open circuit detection device 420 also employs intermittent power supply in synchronization with the coil. Therefore, the power consumption is reduced, the heating value of the needle selector is reduced, and the service life of the needle selector is prolonged.
This embodiment also provides a selector with fault indication, as shown in fig. 3, which includes a housing 450, a plurality of coil coupling members 410 connected in the housing 450, and a plurality of selector jack assemblies 460 relatively swingably connected with the housing 450, each selector jack assembly 460 including a selector jack 461 with an end portion protruding from the housing 450, the plurality of selector jack assemblies 460 being driven to swing in one-to-one correspondence by the plurality of coil coupling members 410. The end of the selector blade 461 that protrudes from the housing 450 is a bit 462.
The needle selector further comprises a programmable logic control unit 430, fault indication means. As shown in fig. 2, the fault indication device includes a plurality of circuit breaking detection devices 420 for detecting whether a circuit breaking fault occurs in a plurality of coil coupling members 410 in a one-to-one correspondence, and an alarm indication lamp 440 for giving a fault indication by turning on or off itself. The plurality of disconnection detecting devices 420 and the alarm indicator lamp 430 are connected to the programmable logic control unit 430, and the programmable logic control unit 430 receives the detection result data of each disconnection detecting device 420, and then determines and controls the on/off of the alarm indicator lamp 440. When at least one of the trip detection means 420 detects an abnormality, the alarm indicator 440 will issue an alarm indication. Preferably, when the detection result data of the plurality of disconnection detecting means 420 are all normal, the alarm indication lamp 440 is not lighted; when the detection result data of the at least one open circuit detection device 420 is abnormal, the alarm indication lamp 440 is lighted.
In a more preferred embodiment, the programmable logic control unit 430 is also coupled to a plurality of coil couplers 410. The programmable logic control unit 430 transmits PWM control signals to the coil bonding part 410 and the open circuit detection device 420, respectively, according to the received control data transmitted from the interface distribution board 200. The coil coupling 410 has a driving operation state defined as an instant when the coil coupling 410 drives the selector assembly 460 to move to change positions, and a holding operation state defined as a state where the coil coupling 410 holds the selector assembly 460 in the current position. Referring to fig. 4, the duty ratio when the coil coupling 410 is in the driving operation state is greater than the duty ratio when the coil coupling 410 is in the maintaining operation state. By the control of the interface distribution plate, when the needle selecting piece assembly 460 is required to change positions, namely, the time T1, a high duty cycle waveform is generated, so that the coil sucking action is fast in place, and then a low duty cycle control waveform is generated, so that the needle selecting piece assembly is maintained in the current position state. The open circuit detection device 420 also employs intermittent power supply in synchronization with the coil. Therefore, the power consumption is reduced, the heating value of the needle selector is reduced, and the service life of the needle selector is prolonged.
The needle selector with the fault indication is applied to the needle selection control device with the fault indication.
This select needle controlling means and selection needle ware with fault indication through addding fault indication device, when the coil of certain selection needle ware takes place the trouble of breaking circuit, then this selection needle ware can send alarm indication, no longer need manual detection judge, and maintenance personnel can very directly perceivedly inspect whether the coil is unusual, and the convenience maintenance personnel judges the fault point, practices thrift manual work and time, promotes the availability factor of machine.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (6)
1. A needle selection control device with fault indication, comprising a control panel (100), an interface distribution plate (200) with an input end connected with the control panel (100), a power module (300) connected with the interface distribution plate (200), and a plurality of needle selectors (400) respectively connected with output ends of the interface distribution plate (200), wherein each needle selector comprises a shell (450), a plurality of coil combining pieces (410) connected in the shell (450), and a plurality of needle selecting piece assemblies (460) connected with the shell (450) in a relatively swinging way, each needle selecting piece assembly (460) comprises a needle selecting piece (461) with an end part extending out of the shell (450), and the needle selecting piece assemblies (460) are driven to swing in a one-to-one correspondence way by the coil combining pieces (410), and the needle selecting control device is characterized in that: the needle selector further comprises a programmable logic control unit (430) and a fault indicating device, wherein the fault indicating device comprises alarm indicator lamps (440) and a plurality of open circuit detecting devices (420) for detecting whether open circuit faults occur in the coil combining pieces (410) in a one-to-one correspondence mode, the open circuit detecting devices (420) and the alarm indicator lamps (440) are connected with the programmable logic control unit (430), the programmable logic control unit (430) receives detection result data of the open circuit detecting devices (420) and then judges and controls the on and off of the alarm indicator lamps (440), the output end of the interface distribution plate (200) is connected with the needle selector (400) through 20-core flat wires respectively, and when the detection result data of the open circuit detecting devices (420) are all normal, the alarm indicator lamps (440) are not on; when the detection result data of at least one of the disconnection detecting means (420) is abnormal, the alarm indication lamp (440) is lighted.
2. The needle selection control device with fault indication of claim 1, wherein: the programmable logic control unit (430) is respectively connected with the plurality of coil connectors (410), and the programmable logic control unit (430) respectively sends PWM control signals to the coil connectors (410) and the open circuit detection device (420) according to the received control data sent by the interface distribution plate (200).
3. The needle selection control device with fault indication of claim 2, wherein: the coil bonding element (410) has a driving operation state and a holding operation state, wherein the driving operation state is defined as the moment when the coil bonding element (410) drives the needle selecting piece assembly (460) to move to change the position, and the holding operation state is defined as the state that the coil bonding element (410) keeps the needle selecting piece assembly (460) at the current position, and the duty ratio of the coil bonding element (410) in the driving operation state is larger than that of the coil bonding element (410) in the holding operation state.
4. A selector with fault indication, comprising a housing (450), a plurality of coil coupling members (410) connected in the housing (450), a plurality of selector jack assemblies (460) relatively swingably connected with the housing (450), each selector jack assembly (460) comprising a selector jack (461) having an end portion protruding out of the housing (450), the plurality of selector jack assemblies (460) being swingably driven by the plurality of coil coupling members (410) in a one-to-one correspondence, characterized in that: the needle selector also comprises a programmable logic control unit (430) and a fault indicating device, wherein the fault indicating device comprises an alarm indicating lamp (440) and a plurality of open circuit detecting devices (420) for detecting whether the open circuit faults occur in the plurality of coil combining pieces (410) in a one-to-one correspondence manner, the plurality of open circuit detecting devices (420) and the alarm indicating lamp (440) are connected with the programmable logic control unit (430), the programmable logic control unit (430) receives detection result data of the open circuit detecting devices (420) and then judges and controls the on-off of the alarm indicating lamp (440), the programmable logic control unit (430) is respectively connected with the plurality of coil combining pieces (410), the programmable logic control unit (430) respectively sends PWM control signals to the coil combining pieces (410) and the open circuit detecting devices (420) according to the received control data, the coil combining pieces (410) have driving working states and maintaining working states, the driving working states are defined as that the coil combining pieces (410) drive the needle selecting components (460) to enable the current positions of the needle selecting components (460) to be maintained in the combined states, and the current positions of the needle combining components (460) are maintained in the working states, the duty ratio when the coil coupling (410) is in the driving operation state is larger than the duty ratio when the coil coupling (410) is in the holding operation state.
5. The needle selector with fault indication of claim 4, wherein: when the detection result data of the plurality of disconnection detecting means (420) are all normal, the alarm indicator lamp (440) is not lighted; when the detection result data of at least one of the disconnection detecting means (420) is abnormal, the alarm indication lamp (440) is lighted.
6. The needle selector with fault indication of claim 4, wherein: a needle selection control device with fault indication applied to any one of claims 1-3.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810297631.2A CN108342824B (en) | 2018-03-30 | 2018-03-30 | Needle selection control device with fault indication and needle selector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810297631.2A CN108342824B (en) | 2018-03-30 | 2018-03-30 | Needle selection control device with fault indication and needle selector |
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| CN108342824B true CN108342824B (en) | 2023-06-20 |
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| CN201810297631.2A Active CN108342824B (en) | 2018-03-30 | 2018-03-30 | Needle selection control device with fault indication and needle selector |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110791870A (en) * | 2018-08-02 | 2020-02-14 | 典洋针织机械股份有限公司 | Detection method of needle selection device and needle selection device with detection system |
| CN108914359A (en) * | 2018-09-05 | 2018-11-30 | 佛山市三创针织有限公司 | A kind of multistation knitting needle control device of novel hosiery machinery |
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| CN203307566U (en) * | 2013-06-08 | 2013-11-27 | 杭州佳谷数控技术有限公司 | Coil type needle selector driving device |
| CN103757813A (en) * | 2014-01-16 | 2014-04-30 | 常熟理工学院 | Control system of circular knitting machine |
| CN107544572A (en) * | 2017-07-24 | 2018-01-05 | 盐城工学院 | A kind of energy-saving computer stocking field device control system and its control method |
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|---|---|---|---|---|
| CN102330275A (en) * | 2011-08-01 | 2012-01-25 | 鲁文杰 | Computerized flat knitting machine fault detection system |
| CN202956457U (en) * | 2012-11-27 | 2013-05-29 | 杭州洛凯科技有限公司 | Computer flat knitting machine needle detector plate quality detection circuit |
| CN203307566U (en) * | 2013-06-08 | 2013-11-27 | 杭州佳谷数控技术有限公司 | Coil type needle selector driving device |
| CN103757813A (en) * | 2014-01-16 | 2014-04-30 | 常熟理工学院 | Control system of circular knitting machine |
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