CN109230870B - Grouping moment control device and method for carbon fiber spreading creel - Google Patents
Grouping moment control device and method for carbon fiber spreading creel Download PDFInfo
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- CN109230870B CN109230870B CN201811191989.3A CN201811191989A CN109230870B CN 109230870 B CN109230870 B CN 109230870B CN 201811191989 A CN201811191989 A CN 201811191989A CN 109230870 B CN109230870 B CN 109230870B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H59/00—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators
- B65H59/38—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension
- B65H59/384—Adjusting or controlling tension in filamentary material, e.g. for preventing snarling; Applications of tension indicators by regulating speed of driving mechanism of unwinding, paying-out, forwarding, winding, or depositing devices, e.g. automatically in response to variations in tension using electronic means
- B65H59/387—Regulating unwinding speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H51/00—Forwarding filamentary material
- B65H51/20—Devices for temporarily storing filamentary material during forwarding, e.g. for buffer storage
- B65H51/22—Reels or cages, e.g. cylindrical, with storing and forwarding surfaces provided by rollers or bars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H57/00—Guides for filamentary materials; Supports therefor
- B65H57/14—Pulleys, rollers, or rotary bars
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Tension Adjustment In Filamentary Materials (AREA)
Abstract
The invention relates to the technical field of motors, in particular to a grouping moment control device of a carbon fiber spreading creel, which comprises the following components: the device comprises a frame, a yarn drum, a fiber spreading device, a yarn guiding device and a yarn storage device; the frame sets up two-layer support that is used for carrying out the installation to yarn section of thick bamboo at least, and the yarn section of thick bamboo quantity that sets up on each layer support equals, and sets up quantity equal to or greater than 2, and wherein, the yarn section of thick bamboo that the range position is the same among each layer yarn section of thick bamboo all reaches the yarn guide device with same angle to convey the fine device of exhibition through the collection of yarn guide device, after the fine, yarn reaches the yarn storage device and stores. By the technical scheme, the motor control cost is effectively reduced, and the labor and time cost caused by manual debugging is saved. Meanwhile, the invention also discloses a control method of the grouping moment control device of the carbon fiber spreading creel.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a grouping moment control device and a grouping moment control method for a carbon fiber spreading creel.
Background
The carbon fiber or glass fiber multiaxial warp knitting machine needs to keep yarn constant tension in the cutting and weaving process, so a torque motor and a control device are needed in the unreeling process. At present, a domestic torque motor generally adopts a torque controller, the controller needs to debug voltage on site and control output torque to keep constant tension of yarns, the controller is only suitable for controlling tension by a single motor, a few of a few tens of torque motors and a plurality of one hundred torque motors are needed on a yarn unreeling frame, and a great deal of labor and time are wasted in each debugging, so that the implementation cost is greatly increased.
In view of the above problems, the present designer actively researches and innovates based on the practical experience and expertise which are rich for years in such product engineering application and in combination with the application of the theory, so as to create a carbon fiber spreading creel grouping moment control device and control method, which make the device more practical.
Disclosure of Invention
The invention aims to provide a grouping moment control device and a grouping moment control method for a carbon fiber spreading creel, which can rapidly realize the output of motor moment through lower cost, thereby realizing the constant tension control of yarns.
The technical scheme of the invention is as follows: the utility model provides a carbon fiber exhibition fine creel grouping moment controlling means, includes: the device comprises a frame, a yarn drum, a fiber spreading device, a yarn guiding device and a yarn storage device; the yarn storage device comprises a rack, a yarn guiding device, a yarn storage device and at least two layers of supports used for installing yarn barrels, wherein the supports are arranged on the rack, the number of the yarn barrels is equal to each other, the number of the yarn barrels is equal to or greater than or equal to 2, the number of the yarn barrels is equal to or greater than 2, the yarns on the yarn barrels, which are arranged in the same positions in the yarn barrels, reach the yarn guiding device at the same angle, are conveyed to the yarn storage device through the collection of the yarn guiding device, and after fibers are spread, the yarns reach the yarn storage device for storage.
Further, the support is horizontally arranged, and the yarn barrels positioned on the support are arranged in a one-to-one correspondence in the vertical direction.
Further, the yarn guiding device comprises primary yarn guiding rollers which are in one-to-one correspondence with the brackets, and the primary yarn guiding rollers are used for gathering yarns discharged by the yarn barrels on each layer of brackets; the yarn feeding device further comprises a secondary yarn guiding roller, wherein the secondary yarn guiding roller is used for gathering yarns fed out by the primary yarn guiding rollers and guiding the yarns to the fiber spreading device.
Further, a heating device is further arranged at the upstream of the fiber spreading device and used for heating yarns to be spread.
Further, the downstream of the fiber spreading device is further provided with an extrusion traction device, the extrusion traction device comprises two driving rollers and extrusion rollers which are respectively tangential to the two driving rollers, and a rotating shaft of each extrusion roller is connected with an air cylinder and is used for extruding and guiding yarns passing through between the extrusion rollers and the driving rollers.
A control method of a grouping torque control device of a carbon fiber spreading creel divides yarn cylinders of which output yarns arrive at a yarn guiding device at the same angle into a group, and synchronously controls torque of yarn cylinder motors in the same group.
Further, the torque synchronization control includes the steps of:
step one: determining a motor torque required under any winding diameter according to a tension value required by yarns in the group through a formula M=FD, wherein D is a real-time winding diameter, F is yarn tension, and M is a motor torque;
step two: the method comprises the steps of utilizing an AC220 single-phase alternating current sine wave power supply to input and step down, comparing the voltage with reference voltages of 2 comparators respectively, obtaining two rectangular pulses which are respectively output by sine waves and are larger than the positive end of a first comparator and the negative end of a second comparator, superposing the two rectangular pulses, obtaining a zero crossing trigger signal every half period, wherein the time for common trigger is zero crossing pulse time, the zero crossing trigger signal is input to a main control circuit in a high level, the main control circuit takes the zero crossing signal as a reference signal, and a required trigger angle signal is obtained, so that the trigger angle of the power supply voltage of a motor is adjusted, and the moment of the motor is adjusted to a required value in the step one according to the trigger angle.
Further: in the first step, the calculation formula of the real-time winding diameter D is as follows:
D=2W/πgN
wherein:
d is the real-time winding diameter;
w is the weight of the wound yarn;
g is the weight of the yarn in meters;
n is the current winding number of turns.
Further, the sine wave trigger circuit of the motor is independently powered.
By the scheme, the invention has at least the following advantages:
according to the technical scheme, the motor control cost is reduced, the labor and time cost caused by manual debugging is saved, in the use process, the moment motor can be driven to output the current moment value only by firstly establishing and storing the corresponding data table of the trigger angle and the moment and outputting the corresponding trigger angle, so that the constant tension of the current yarn is effectively maintained.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic diagram of a grouping moment control device of a carbon fiber spreading creel in the invention;
FIG. 2 is a schematic view of the structure of the extrusion drawing device;
FIG. 3 is a schematic diagram of a method for controlling grouping moment of a carbon fiber spreading creel according to the present invention;
FIG. 4 is a block diagram of the various bobbins in an embodiment of the present invention;
reference numerals: 1. a frame; 11. a bracket; 2. a yarn drum; 3. a fiber spreading device; 4. yarn guiding device; 41. a primary yarn guide roller; 42. a secondary yarn guide roller; 5. a yarn storage device; 6. a heating device; 7. an extrusion and traction device; 71. a driving roller; 72. extruding rollers; 73. and (3) a cylinder.
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.
The invention relates to a grouping moment control device of a carbon fiber spreading creel, which comprises the following components: a frame 1, a yarn cylinder 2, a fiber spreading device 3, a yarn guiding device 4 and a yarn storing device 5; the frame 1 sets up two-layer support 11 that are used for carrying out the installation to yarn section of thick bamboo 2 at least, and the yarn section of thick bamboo 2 that sets up on each layer support 11 quantity equals, and sets up quantity equal to or greater than 2, and wherein, the yarn on the yarn section of thick bamboo 2 that the range position is the same among the yarn section of thick bamboo 2 of each layer all reaches yarn carrier 4 with same angle to convey to the fine device 3 of exhibition through the collection of yarn carrier 4, after the fine, the yarn reaches yarn storage device 5 and stores. In this embodiment, as shown in fig. 1, the brackets 11 are horizontally arranged, and the bobbins 2 located thereon are arranged in a one-to-one correspondence in the vertical direction, wherein 7 torque motor unwinding devices are arranged on each bracket 11, 6 brackets 11 are arranged in total, the rotating shafts of the motor unwinding devices are used for installing the bobbins 2, 42 unwinding devices respectively control the yarn tension on the respective drums, and after the 24k yarns are heated and spread, the Cheng Kuanping state is wound.
As a preference of the above embodiment, the yarn guiding device 4 includes primary yarn guiding rollers 41 corresponding to the brackets 11 one by one, and the primary yarn guiding rollers 41 are used for gathering yarns discharged from the respective yarn packages 2 on each layer of brackets 11; and a second yarn guide roller 42, wherein the second yarn guide roller 42 is used for gathering yarns discharged by the first yarn guide rollers 41 and guiding the yarns to the fiber spreading device 3. The yarn distribution of each yarn cylinder 2 is more reasonable and clear through the above distinction.
In order to remove the slurry existing on the fiber surface in the fiber spreading process, a heating device 6 is further arranged at the upstream of the fiber spreading device 3 and used for heating the yarn to be spread, and a specific heating mode can adopt a heat radiation mode to enable heating to be more uniform.
As shown in fig. 2, in order to better provide power for yarn transmission, the downstream of the fiber spreading device 3 is further provided with an extrusion and traction device 7, the extrusion and traction device 7 comprises two driving rollers 71 and extrusion rollers 72 respectively tangentially arranged with the two driving rollers 71, the rotating shafts of the extrusion rollers 72 are connected with air cylinders 73 for extrusion guiding of the yarn passing between the extrusion rollers 72 and the driving rollers 71, the extrusion force can be adjusted through control of the air cylinders 73, and the yarn can be reliably transmitted through rolling and proper extrusion force of the two driving rollers 71.
As shown in fig. 3, the yarn drums 2 of which the output yarns reach the yarn guiding device 4 at the same angle are divided into one group, and the motors of the yarn drums 2 in the same group are synchronously controlled in torque. As shown in fig. 3, the torque synchronization control specifically includes the following steps:
step one: determining a motor torque required at any winding diameter according to a tension value required for the yarns in the group by the formula m=fd, wherein D is a real-time winding diameter, F is yarn tension, and M is a motor torque, wherein the real-time winding diameter can be obtained by measurement or calculation, and when obtained by calculation, the following formula can be adopted:
D=2W/πgN
wherein:
d is the real-time winding diameter;
w is the weight of the wound yarn;
g is the weight of the yarn in meters;
n is the current winding number of turns;
step two: the AC220 single-phase alternating current sine wave power supply is utilized to input and step down and then is respectively compared with reference voltages of 2 comparators, two rectangular pulses which are respectively output by sine waves larger than the positive end of a first comparator and the negative end of a second comparator are obtained, the two rectangular pulses are overlapped, the common triggering time is zero crossing point pulse time, a zero crossing point triggering signal is obtained in each half period, the zero crossing point triggering signal is input to a main control circuit in a high level mode, the main control circuit takes the zero crossing point signal as a reference signal to obtain a required triggering angle signal, and therefore the triggering angle of the power supply voltage of a motor is adjusted, and particularly, three zero crossing point triggering pulses with 120 degrees phase difference, namely alternating current sine waves, can be obtained through a synchronous signal pulse triggering circuit, and one pulse is output through zero crossing points; through the zero trigger signal, the main control circuit obtains a wanted trigger angle through calculation and time delay, and when the three trigger angle control circuits trigger together, the torque motor outputs torque.
In order to avoid interference of the differential comparison circuit, the sine wave trigger circuit of the motor is independently powered.
By applying the control method to the grouping moment control device of the carbon fiber spreading creel, each yarn drum 2 can be divided into 7 groups according to different tension values, a specific grouping division diagram is shown in fig. 4, and the control difficulty of yarn tension can be reduced through reasonable grouping, so that the cost is reduced, and more accurate control is realized.
According to the technical scheme, the motor control cost is reduced, the labor and time cost caused by manual debugging is saved, in the use process, the corresponding data table and the curve chart of the trigger angle and the moment are obtained through a large amount of experimental data, the corresponding data table and the curve chart are stored in the main control circuit, the moment motor can be driven when the corresponding trigger angle is output, and the current required moment value is output. Specifically, the upper computer sets the tension value F required by the yarn, the 485 communication circuit transmits the tension value F to the main control circuit, the tension value D can be obtained through measurement and calculation of the measuring device, the main control circuit outputs the corresponding trigger angle according to the trigger angle and moment corresponding data table stored in advance, the trigger angle control circuit is controlled to drive the moment motor, the current moment value is output, and the tension value of the current yarn can be kept through the unwinding device.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, and it should be noted that it is possible for those skilled in the art to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention.
Claims (7)
1. A control method of a grouping moment control device of a carbon fiber spreading creel is characterized in that yarn drums (2) of which output yarns reach a yarn guiding device (4) at the same angle are divided into a group, and moment synchronous control is carried out on motors of the yarn drums (2) in the same group;
adopt a carbon fiber exhibition fine creel grouping moment controlling means, include: the device comprises a frame (1), a yarn drum (2), a fiber spreading device (3), a yarn guiding device (4) and a yarn storage device (5);
the machine frame (1) is provided with at least two layers of brackets (11) for installing yarn barrels (2), the number of the yarn barrels (2) arranged on each layer of brackets (11) is equal to or greater than 2, wherein yarns on the yarn barrels (2) with the same arrangement positions in each layer of yarn barrels (2) reach the yarn guide device (4) at the same angle, and are conveyed to the fiber spreading device (3) through the collection of the yarn guide device (4), and after fiber spreading, the yarns reach the yarn storage device (5) for storage;
the torque synchronous control comprises the following steps:
step one: determining a motor torque required under any winding diameter according to a tension value required by yarns in the group through a formula M=FD, wherein D is a real-time winding diameter, F is yarn tension, and M is a motor torque;
step two: the method comprises the steps of utilizing an AC220 single-phase alternating current sine wave power supply to input and step down, comparing the voltage with reference voltages of 2 comparators respectively, obtaining two rectangular pulses which are respectively output by sine waves and are larger than the positive end of a first comparator and the negative end of a second comparator, superposing the two rectangular pulses, obtaining a zero crossing trigger signal every half period, wherein the time for common trigger is zero crossing pulse time, the zero crossing trigger signal is input to a main control circuit in a high level, the main control circuit takes the zero crossing signal as a reference signal, and a required trigger angle signal is obtained, so that the trigger angle of the power supply voltage of a motor is adjusted, and the moment of the motor is adjusted to a required value in the step one according to the trigger angle.
2. The control method of the grouping moment control device for the carbon fiber spreading creel according to claim 1, wherein the control method comprises the following steps: the support (11) is horizontally arranged, and the yarn barrels (2) positioned on the support are arranged in a one-to-one correspondence manner in the vertical direction.
3. The control method of the grouping moment control device for the carbon fiber spreading creel according to claim 2, wherein the control method comprises the following steps: the yarn guiding device (4) comprises primary yarn guiding rollers (41) which are in one-to-one correspondence with the brackets (11), and the primary yarn guiding rollers (41) are used for gathering yarns discharged by the yarn drums (2) on each layer of brackets (11); the yarn-spreading device further comprises a secondary yarn-guiding roller (42), wherein the secondary yarn-guiding roller (42) is used for gathering yarns which are discharged by the primary yarn-guiding rollers (41) and guiding the yarns to the yarn-spreading device (3).
4. The control method of the grouping moment control device for the carbon fiber spreading creel according to claim 1, wherein the control method comprises the following steps: and a heating device (6) is further arranged at the upstream of the fiber spreading device (3) and is used for heating yarns to be spread.
5. The control method of the grouping moment control device for the carbon fiber spreading creel according to claim 1, wherein the control method comprises the following steps: the downstream of the fiber spreading device (3) is also provided with an extrusion traction device (7), the extrusion traction device (7) comprises two driving rollers (71) and extrusion rollers (72) which are respectively tangentially arranged with the two driving rollers (71), and a rotating shaft of the extrusion rollers (72) is connected with a cylinder (73) and is used for extruding and guiding yarns passing between the extrusion rollers (72) and the driving rollers (71).
6. The control method of the grouping moment control device for the carbon fiber spreading creel according to claim 1, wherein the control method comprises the following steps: in the first step, the calculation formula of the real-time winding diameter D is as follows:
D=W/πgN
wherein:
d is the real-time winding diameter;
w is the weight of the wound yarn;
g is the weight of the yarn in meters;
n is the current winding number of turns.
7. The control method of the grouping moment control device for the carbon fiber spreading creel according to claim 1, wherein the control method comprises the following steps: the sine wave trigger circuit of the motor is independently powered.
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| CN201811191989.3A CN109230870B (en) | 2018-10-12 | 2018-10-12 | Grouping moment control device and method for carbon fiber spreading creel |
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| CN114520614B (en) * | 2022-02-14 | 2022-07-22 | 常州市新创智能科技有限公司 | Motor trigger angle calculation method and device, storage medium and processor |
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