CN108193368B - Knitting machine and control method thereof - Google Patents
Knitting machine and control method thereof Download PDFInfo
- Publication number
- CN108193368B CN108193368B CN201810220875.0A CN201810220875A CN108193368B CN 108193368 B CN108193368 B CN 108193368B CN 201810220875 A CN201810220875 A CN 201810220875A CN 108193368 B CN108193368 B CN 108193368B
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- China
- Prior art keywords
- roller motor
- knitting machine
- command
- cloth
- instruction
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000009940 knitting Methods 0.000 title claims description 71
- 238000000034 method Methods 0.000 title claims description 12
- 239000004744 fabric Substances 0.000 claims description 71
- 238000006073 displacement reaction Methods 0.000 claims description 23
- 238000007599 discharging Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000010511 looping mechanism Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- 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
- D04B15/88—Take-up or draw-off devices for knitting products
-
- 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
- D04B35/20—Indicating, warning, or safety devices, e.g. stop motions responsive to defects, e.g. holes, in knitted products
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
Abstract
The invention provides a knitting machine and a control method thereof. The knitting machine comprises a roller motor and a master control system. The master control system comprises a judging module and an instruction module. The judging module comprises a state detecting module, and the state detecting module is used for detecting the state of the knitting machine. The command module is used for sending a speed command and a moment command to the roller motor, the command module is electrically connected with the judging module, the speed command controls the roller motor to switch to a speed mode, and the moment command controls the roller motor to switch to a moment mode.
Description
Technical Field
The invention relates to the technical field of textile, in particular to a knitting machine and a control method thereof.
Background
After the knitting of the knitting machine is completed by the looping mechanism, a cloth rolling motor and a roller motor are mainly adopted in the market at present to pull the fabric out of the knitting area. The roller motor clamps the fabric from the knitting area and pulls the fabric downwards, and the cloth rolling motor curls the fabric pulled downwards by the roller motor. The existing cloth rolling motor and roller motor are generally controlled by single-phase torque motor, when the torque motor is smaller than the set torque, the motor is in running state, and when the torque motor is larger than the set torque, the motor is stopped.
However, the following drawbacks will occur with this single phase torque mode. Firstly, when the machine breaks cloth in a knitting area, but the roller motor still possibly runs, a gap of the broken cloth is increased continuously, and cloth is dropped. Secondly, when the machine fails or a field worker needs to adjust the machine, the knitting machine is often required to be operated for backing or discharging the cloth, but if the roller motor is controlled by the torque motor, the displacement of backing or discharging the cloth cannot be accurately controlled. Moreover, in order to avoid the situation that the broken cloth gap is continuously increased, when the broken cloth is stopped, a field worker can close the torque motor (namely, the voltage of the control motor is 0V), and cloth withdrawal of the fabric can be caused.
Disclosure of Invention
The invention aims to provide a knitting machine and a control method thereof, and when a cloth breaking condition occurs, a roller motor can be stopped in time.
In order to solve the technical problem, according to one aspect of the invention, the invention provides a knitting machine, which comprises a roller motor and a general control system. The master control system comprises a judging module and an instruction module. The judging module comprises a state detecting module, and the state detecting module is used for detecting the state of the knitting machine. The command module is used for sending a speed command and a moment command to the roller motor, the command module is electrically connected with the judging module, the speed command controls the roller motor to switch to a speed mode, and the moment command controls the roller motor to switch to a moment mode.
According to this aspect of the present invention, the general control system further includes an instruction receiving module, where the instruction receiving module is electrically connected to the instruction module, and the instruction receiving module is configured to receive the instruction for retiling and the instruction for retiling.
According to the aspect of the invention, the instruction module is further used for sending a forward rotation instruction and a reverse rotation instruction to the roller motor, and the instruction receiving module is further used for receiving a cloth withdrawal displacement instruction and a cloth discharge displacement instruction.
According to this aspect of the invention, the general control system further includes a calculation module, which is connected to the instruction receiving module, and is configured to calculate the cloth withdrawal time or the cloth discharge time by using the cloth withdrawal displacement instruction or the cloth discharge displacement instruction.
According to this aspect of the invention, the command module is further configured to send a stop command to the roller motor, the stop command controlling the rotational speed of the roller motor to be 0.
According to this aspect of the invention, the knitting machine is connected to the general control system by RS 485.
According to this aspect of the invention, the knitting machine further comprises a power supply module for supplying power to each module of the knitting machine.
According to another aspect of the present invention, there is also provided a control method of a knitting machine, the control method of the knitting machine including:
detecting the running state of the knitting machine;
if the running state of the knitting machine is changed from the running state to the stop state, the command module sends a speed command to the roller motor;
if the operation state of the knitting machine is changed from the stop state to the operation state, the command module sends a torque command to the roller motor.
According to another aspect of the invention, the control method of the knitting machine further comprises: if the motion state of the knitting machine is in a stop state and a cloth discharging instruction or a cloth returning instruction is received, the instruction module sends a forward rotation instruction or a reverse rotation instruction to the roller motor; the command module sends a speed command to the roller motor, and the roller motor stops after running for a period of time.
According to another aspect of the present invention, stopping the roller motor after a period of operation includes:
the instruction receiving module receives a displacement instruction of the master control system;
the calculation module calculates the running time of the roller motor according to the displacement instruction;
after the running time, the command module sends a stop command to the roller motor, and the stop command controls the rotating speed of the roller motor to be 0.
In summary, when the knitting machine is changed from the stop state to the operation state, the command module sends a torque command to the roller motor, and the roller motor is switched to the torque conversion mode. When the knitting machine is switched from the running state to the stop state, if the roller motor is in torque mode control, the broken cloth can reduce the tension of the cloth surface, so that the torque does not reach the set torque, the roller motor can continue to run, holes in the broken cloth are larger and larger, and even cloth falling occurs. However, when the main control module in the knitting machine provided by the invention detects that the knitting machine is changed from the running state to the stop state, the command module sends a speed command to the roller motor, the roller motor is switched to the speed mode, the roller motor can be stopped in time by controlling the speed, and the situation that the larger the broken hole is, the larger the broken hole is can be avoided. And the roller motor is controlled to stop by the speed of 0, so that the cloth withdrawal condition can not occur.
Furthermore, the calculation module controls the roller motor to run for a period of time according to the current running speed of the roller motor and the cloth withdrawal displacement instruction or the cloth discharge displacement instruction, and can accurately control the cloth withdrawal displacement and the cloth discharge displacement of the roller motor.
Drawings
FIG. 1 is a schematic view of a knitting machine provided by an embodiment of the present invention;
fig. 2 is a flowchart of a control method of the knitting machine provided in the embodiment of the present invention.
Detailed Description
The following describes in further detail the embodiments of the present invention with reference to the drawings and examples. The following examples are illustrative of the invention and are not intended to limit the scope of the invention.
Fig. 1 is a schematic diagram of a knitting machine according to an embodiment of the present invention, and fig. 2 is a flowchart of a control method of the knitting machine according to the embodiment of the present invention.
When the knitting machine breaks cloth in a knitting area, the moment of the load of the roller motor is reduced, so that the roller motor is still possibly operated even though the knitting machine is in a stop working state, and a gap of the broken cloth is increased continuously and cloth is dropped. Moreover, in order to avoid the situation that the broken cloth gap is increased continuously, when the broken cloth is stopped, a field worker can turn off the torque motor (namely, the voltage of the control motor is 0V). When the torque motor is turned off, if the fabric in the knitting area is in a high-strength stretching state at the moment, the torque of the roller motor is 0, and the stretching fabric can shrink and recover under high strength, so that the fabric is retracted.
The invention provides a knitting machine, wherein the running state of the knitting machine comprises a stop state and a running state, and the knitting machine comprises a master control system 1 and a roller motor 2. The general control system 1 comprises a judging module 10 and an instruction module 5. The judging module 10 comprises a state detecting module 7, and the state detecting module 7 is used for detecting the state of the knitting machine. The command module 5 is used for sending a speed command and a moment command to the roller motor 2, the command module 5 is electrically connected with the judging module 10, the speed command controls the roller motor 2 to switch to a speed mode, and the moment command controls the roller motor 2 to switch to a moment mode.
The control modes of the roller motor 2 include a speed mode and a moment mode. When the knitting machine is changed from the stop state to the running state, but the judging module 10 in the knitting machine provided by the invention detects that the knitting machine is changed from the stop state to the running state, the command module 5 sends a moment command to the roller motor 2, and the roller motor 2 is switched to the moment conversion mode. When the knitting machine is switched from the running state to the stop state, if the roller motor 2 is in torque mode control, the broken cloth can reduce the tension of the cloth surface, so that the torque does not reach the set torque, the roller motor 2 can continue to operate, the holes on the broken cloth are larger and larger, and even the cloth is dropped. However, when the judging module 10 in the knitting machine provided by the invention detects that the knitting machine is changed from the running state to the stop state, the command module 5 sends a speed command to the roller motor 2, the roller motor 2 is switched to the speed mode, the roller motor can be stopped in time by controlling the speed, and the situation that the larger the broken hole is, the larger the broken hole is can not happen.
Meanwhile, if the roller motor 2 is in torque mode control, in order to avoid the situation that holes on the fabric are bigger and bigger, the voltage of the roller motor is set to 0, the torque of the roller motor is 0 at the moment, the fabric is in a high-strength stretching state at the moment, the torque of the fabric is larger than 0, the fabric is contracted and restored in order to enable the torque of the fabric to be 0, and the situation that the fabric is retracted is caused. The knitting machine provided in this embodiment is controlled such that when the knitting machine is shifted from the running state to the stop state, the roller motor 2 is switched to the speed mode, and the running of the knitting machine is stopped by controlling the running speed of the roller motor to 0, so that the fabric withdrawal does not occur.
In this embodiment, the master control system 1 further includes an instruction receiving module 4, where the instruction receiving module 4 is electrically connected to the instruction module 5, and the instruction receiving module 4 is configured to receive the cloth returning instruction and the cloth discharging instruction.
In this embodiment, the instruction receiving module 4 is further configured to receive a cloth withdrawal displacement instruction and a cloth discharge displacement instruction of the general control system 1, so as to separate a cloth withdrawal operation and a cloth discharge operation, which is convenient and clear. The command module 5 is also used for sending forward rotation commands and reverse rotation commands to the roller motor 2.
In this embodiment, the knitting machine further includes a calculating module 9, where the calculating module 9 is connected to the instruction receiving module 4, and the calculating module 9 is configured to calculate the cloth withdrawal time or the cloth discharge time by using the cloth withdrawal displacement instruction or the cloth discharge displacement instruction, and after the roller motor 2 runs the cloth withdrawal time or the cloth discharge time, the predetermined cloth withdrawal displacement or the cloth discharge displacement can be achieved.
In this embodiment, the command module 5 is further configured to send a stop command to the roller motor 2, where the stop command controls the rotation speed of the roller motor 2 to be 0.
In the embodiment, the knitting machine and the master control system 1 are connected by RS485, the RS485 is the most common connection, the common mode interference resistance is enhanced, and the noise interference resistance is good.
In this embodiment, the knitting machine further includes a power supply module that supplies power to each module of the knitting machine.
The invention also provides a control method of the knitting machine, which comprises the following steps:
step S01: the state detection module 7 detects and judges whether the operation state of the knitting machine is changed, if the operation state of the knitting machine is changed, the step S02 is executed, and if the operation state of the knitting machine is not changed, the step S05 is executed;
step S02: the state detection module 7 judges whether the operation state of the knitting machine is a stop state, if the operation state of the knitting machine is a stop state, the step S03 is executed, and if the operation state of the knitting machine is an operation state, the step S04 is executed;
step S03: the command module 5 sends a speed command to the roller motor 2 and executes step S05;
step S04: the command module 5 sends a moment command to the roller motor 2;
step S05: the state detection module 7 judges whether the motion state of the knitting machine is a stop state, if the motion state of the knitting machine is a stop state, the step S06 is executed, and if the motion state of the knitting machine is a motion state, the step S01 is executed;
step S06: judging whether the instruction receiving module 4 receives a cloth-discharging instruction or a cloth-discharging instruction, if so, executing the step S07, and if not, executing the step S01;
step S07: if the instruction receiving module 4 receives the cloth-down instruction, the step S08 is executed, and if the instruction receiving module 4 receives the cloth-back instruction, the step S09 is executed;
step S08: the command module 5 sends a forward rotation command to the roller motor 2; executing step S010;
step S09: the command module 5 sends a reversing command to the roller motor 2;
step S010: the command module 5 sends a speed command to the roller motor 2, and the roller motor 2 stops after a period of operation, and step S01 is executed.
In this embodiment, step S010 of the control method of the knitting machine includes:
step S0101: the instruction receiving module 4 receives a cloth withdrawal displacement instruction and a cloth discharge displacement instruction of the general control system 1;
step S0102: the calculation module 9 calculates the running time of the roller motor 2 according to the displacement instruction;
step S0103: after the running time, the command module 5 sends a stop command to the roller motor 2, and the stop command controls the rotating speed of the roller motor 2 to be 0.
Although the invention has been described with reference to the preferred embodiments, it should be understood that the invention is not limited thereto, but rather may be modified and varied by those skilled in the art without departing from the spirit and scope of the invention.
Claims (1)
1. A control method of a knitting machine including a roller motor, characterized by comprising:
step S01, a state detection module detects and judges whether the operation state of the knitting machine is changed, if the operation state of the knitting machine is changed, the step S02 is executed, and if the operation state of the knitting machine is not changed, the step S05 is executed;
step S02, judging whether the changed running state of the knitting machine is a stop state by the state detection module, if so, executing the step S03, and if so, executing the step S04;
step S03: the command module sends a speed command to the roller motor, controls the roller motor to switch to a speed mode, stops the operation of the knitting machine by controlling the operation speed of the roller motor to be 0, and executes step S05;
step S04: the command module sends a torque command to the roller motor, controls the roller motor to switch to a torque mode, and executes step S05;
step S05: the state detection module judges whether the motion state of the knitting machine is a stop state, if the motion state of the knitting machine is the stop state, the step S06 is executed, and if the motion state of the knitting machine is the motion state, the step S01 is executed;
step S06: judging whether the instruction receiving module receives a cloth-discharging instruction or a cloth-discharging instruction, if so, executing the step S07, and if not, executing the step S01;
step S07: if the instruction receiving module receives the cloth-down instruction, executing step S08, and if the instruction receiving module receives the cloth-back instruction, executing step S09;
step S08: the command module sends a forward rotation command to the roller motor; executing step S010;
step S09: the command module sends a reverse command to the roller motor, and step S010 is executed;
step S010 includes:
step S0101: the instruction receiving module receives a cloth withdrawal displacement instruction and a cloth discharge displacement instruction of the master control system;
step S0102: the calculation module calculates the running time of the roller motor according to the displacement instruction;
step S0103: after the running time, the command module sends a stop command to the roller motor, and the stop command controls the rotating speed of the roller motor to be 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810220875.0A CN108193368B (en) | 2018-03-16 | 2018-03-16 | Knitting machine and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810220875.0A CN108193368B (en) | 2018-03-16 | 2018-03-16 | Knitting machine and control method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108193368A CN108193368A (en) | 2018-06-22 |
| CN108193368B true CN108193368B (en) | 2023-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810220875.0A Active CN108193368B (en) | 2018-03-16 | 2018-03-16 | Knitting machine and control method thereof |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003213546A (en) * | 2002-01-17 | 2003-07-30 | Tsudakoma Corp | Method and apparatus for driving a warp transfer device |
| CN201896230U (en) * | 2010-10-28 | 2011-07-13 | 浙江巨福科技有限公司 | Batching roller positive and negative rotation control system of computerized flat knitting machine |
| CN103182952A (en) * | 2011-12-28 | 2013-07-03 | 深圳市汇川技术股份有限公司 | Electronic hill-holding control system and electronic hill-holding control method for electric vehicles |
| CN104221278A (en) * | 2012-04-27 | 2014-12-17 | 株式会社日立产机系统 | Motor Control Device and Its Automatic Adjustment Method |
| CN107268125A (en) * | 2017-05-25 | 2017-10-20 | 天津宏大纺织机械有限公司 | Fly frame integrated intelligent control system and its control method |
| CN107791887A (en) * | 2017-11-10 | 2018-03-13 | 成都富临精工新能源动力有限公司 | A kind of electric automobile hill start auxiliary control method |
-
2018
- 2018-03-16 CN CN201810220875.0A patent/CN108193368B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003213546A (en) * | 2002-01-17 | 2003-07-30 | Tsudakoma Corp | Method and apparatus for driving a warp transfer device |
| CN201896230U (en) * | 2010-10-28 | 2011-07-13 | 浙江巨福科技有限公司 | Batching roller positive and negative rotation control system of computerized flat knitting machine |
| CN103182952A (en) * | 2011-12-28 | 2013-07-03 | 深圳市汇川技术股份有限公司 | Electronic hill-holding control system and electronic hill-holding control method for electric vehicles |
| CN104221278A (en) * | 2012-04-27 | 2014-12-17 | 株式会社日立产机系统 | Motor Control Device and Its Automatic Adjustment Method |
| CN107268125A (en) * | 2017-05-25 | 2017-10-20 | 天津宏大纺织机械有限公司 | Fly frame integrated intelligent control system and its control method |
| CN107791887A (en) * | 2017-11-10 | 2018-03-13 | 成都富临精工新能源动力有限公司 | A kind of electric automobile hill start auxiliary control method |
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| Publication number | Publication date |
|---|---|
| CN108193368A (en) | 2018-06-22 |
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Effective date of registration: 20240925 Address after: 312500 No. 5, digital technology park, Seven Star Street, Xinchang County, Shaoxing, Zhejiang Patentee after: ZHEJIANG RIFA TEXTILE MACHINERY Co.,Ltd. Country or region after: China Address before: No. 605, 6th floor, No. 65, kejiyuan Road, Hangzhou Economic and Technological Development Zone, Jianggan District, Hangzhou City, Zhejiang Province, 310000 Patentee before: HANGZHOU XUREN TEXTILE MACHINERY Co.,Ltd. Country or region before: China |
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