CN111321505A - Alternating current type ultra-wide electromagnetic drive weft insertion device, control system and control method - Google Patents
Alternating current type ultra-wide electromagnetic drive weft insertion device, control system and control method Download PDFInfo
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- CN111321505A CN111321505A CN202010290710.8A CN202010290710A CN111321505A CN 111321505 A CN111321505 A CN 111321505A CN 202010290710 A CN202010290710 A CN 202010290710A CN 111321505 A CN111321505 A CN 111321505A
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- weft insertion
- insertion device
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
- D03D47/27—Drive or guide mechanisms for weft inserting
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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Abstract
The invention belongs to the technical field of textile equipment, and discloses an alternating current type ultra-wide electromagnetic drive weft insertion device, a control system and a control method, wherein an alternating current type electromagnetic weft insertion guide rail device is adopted to replace a weft insertion mechanism of a rapier loom and a torsion shaft for energy conversion of a projectile loom, and the friction force between a weft inserter and a shuttle guide piece is reduced through a weft inserter pulley arranged on an electromagnetic weft insertion track, so that the loom can carry out ultra-wide weft insertion at high speed; and the electromagnetic braking device is adopted to realize the rapid braking and weft holding of the weft insertion device, so that the impact of the weft insertion device is reduced. The electromagnetic weft insertion rail is provided with the weft insertion device pulley to reduce the friction force between the weft insertion device and the shuttle guiding plate, so that the loom can carry out ultra-wide weft insertion at high speed, and the width of the loom can be improved by 3 m. The electromagnetic braking device is adopted to realize the rapid braking of the weft insertion device and the weft clamping, so that the impact of the weft insertion device is reduced, and the energy conversion efficiency of the loom is improved.
Description
Technical Field
The invention belongs to the technical field of textile equipment, and particularly relates to an alternating-current type ultra-wide electromagnetic drive weft insertion device, a control system and a control method.
Background
At present, the existing ultra-wide looms comprise JAGER BK880 type ultra-wide looms and P7300HP type gripper looms, and the BK880 type looms belong to two-way rapier looms in shuttleless looms. The rapier of the loom alternately inserts weft to two sides from the center, and the progress of rapier feeding to one side is the rapier withdrawing travel of the other side.
The double-side weft-supply rapier loom has more parts, namely a weft receiving rapier head and a weft feeding rapier head, and is complex, the two rapier heads have double tasks, the motion rule is difficult to select, the efficiency is not very high, and the weft insertion mechanism is complex. The rapier tape belongs to flexible rapier tapes and needs to be replaced at regular time. The loom of type P7300HP belongs to the gripper loom in the shuttleless loom, and the friction exists between the gripper and the shuttle guide, which reduces the moving speed of the gripper. Secondly, the energy conversion efficiency of the torsion shaft of the weaving machine is low.
In summary, the problems of the prior art are as follows: (1) in the prior art, a weft insertion mechanism of a rapier loom is complex and the energy conversion efficiency of a gripper loom is low. The friction force exists between the weft insertion device and the shuttle guiding plate, so that the loom cannot carry out ultra-wide weft insertion at high speed, and the width of the loom is low. And the prior art weft insertion device has large impact and low energy conversion efficiency of the loom.
The difficulty of solving the technical problems is as follows: the weft insertion device requires a great acceleration at the time of the initial projection. It is a difficulty how to give the weft insertion device a great acceleration by electromagnetic force in a short time.
The significance of solving the technical problems is as follows: the electromagnetic force picking replaces the twisting shaft picking of the loom to improve the energy utilization rate of the loom. The shuttle is thrown and manufactured by using electromagnetic force, which is beneficial to reducing the running noise of the loom.
The electromagnetic drive weft insertion can break through the limitation of the width of the loom theoretically, so that the wider weft insertion becomes possible.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an alternating current type ultra-wide electromagnetic drive weft insertion device, a control system and a control method. The invention adopts the alternating current type electromagnetic weft insertion guide rail device to keep the weft insertion device to carry out reciprocating weft insertion at a constant speed. And the electromagnetic braking device of the weft insertion device is adopted to quickly complete the braking of the weft insertion device and the clamping of the weft.
The invention is realized in this way, a control method for an alternating current type ultra-wide electromagnetic drive weft insertion device, comprising the following steps:
the alternating current type electromagnetic weft insertion guide rail device is adopted to replace a weft insertion mechanism of a rapier loom and a torsion shaft for energy conversion of a gripper loom, and the friction force between a weft insertion device and a shuttle guiding sheet is reduced through a weft insertion device pulley arranged on an electromagnetic weft insertion rail, so that the loom can carry out ultra-wide weft insertion at high speed;
and the electromagnetic braking device is adopted to realize the rapid braking and weft holding of the weft insertion device, so that the impact of the weft insertion device is reduced.
Further, the control method of the alternating current type ultra-wide electromagnetic drive weft insertion device specifically comprises the following steps:
carrying out graphical imaging operation on the controller through the upper computer, sending a starting instruction to the controller through the network port, and transmitting control data;
the controller controls whether the first brake driver and the second brake driver energize the brake coil or not and brake according to the received signals of the weft insertion device position sensor;
the controller judges the direction of the electromagnetic weft insertion track weft insertion by the electromagnetic weft insertion track power supply driver according to the input signal of the weft insertion device position sensor.
Further, a method for a controller to control a brake one actuator and a brake two actuator includes:
when the weft insertion device moving at a high speed penetrates through an electromagnetic weft insertion guide rail in a shed from the first opposite side brake and enters the brake on the former side, the weft insertion device is rapidly decelerated under the action of a brake spring, and when a position sensor of the weft insertion device detects that the weft insertion device reaches a brake point, a second brake driver controls a brake coil in the brake to be electrified, and the weft insertion device is attracted to the brake point; then the weft insertion nozzle driver controls the weft insertion nozzle to jet the weft into the weft insertion device from the weft insertion nozzle, and then the brake coil of the second brake driver is powered off;
the weft insertion device is ejected into the electromagnetic weft insertion guide rail by the brake spring under the condition that the brake coil and the brake iron core are not attracted.
Another object of the present invention is to provide a control system of an ac ultra-wide electromagnetic weft insertion apparatus, which implements the control method of the ac ultra-wide electromagnetic weft insertion apparatus, the control system of the ac ultra-wide electromagnetic weft insertion apparatus including: the device comprises an upper computer, a controller, a first brake driver, a second brake driver, an electromagnetic weft insertion rail power supply driver, a weft insertion nozzle driver, a first weft insertion device position sensor, a second weft insertion device position sensor, a brake coil, an electromagnetic weft insertion rail and a weft insertion nozzle;
the first brake driver, the second brake driver, the electromagnetic weft insertion rail power driver and the weft insertion nozzle driver are considered as a power switch. The large current for driving is controlled by the small current emitted by the controller.
The first weft insertion device position sensor and the second weft insertion device position sensor are proximity switches, when an object passes under the proximity switches, level signals of signal lines of the proximity switches can change, and the controller can perform corresponding processing after detecting that the signals of the proximity switches change.
The brake coil is formed by winding enameled wires. When the electromagnetic coil is energized, a magnetomotive force is generated on the iron core.
The electromagnetic weft insertion track consists of a row of iron cores and coils.
The weft insertion nozzle is actually connected to a solenoid valve, and the controller can inject the weft thread into the weft insertion device by controlling the solenoid valve when the weft insertion device is braked at the braking point.
The upper computer performs graphical imaging operation on the controller, sends a starting-up instruction to the controller through the network port and transmits control data;
the controller controls whether the first brake driver and the second brake driver energize the brake coil or not according to the received signals of the weft insertion device position sensor; the controller judges the direction of the electromagnetic weft insertion track power supply driver for inputting alternating current to the electromagnetic weft insertion track through the in-out signal of the weft insertion device position sensor;
the first brake driver and the second brake driver are respectively connected with a plurality of brake coils;
and the electromagnetic weft insertion track power supply driver is connected with an alternating current power supply and an electromagnetic weft insertion track.
Further, the controller comprises an RJ45 network port, a DB9 serial port, an RAM, an SD card, a sensor input interface, a weft selection signal input interface and a driver signal output interface.
And the RJ45 network port is an Ethernet connection port and is connected with the network port of the PC. RJ45 sends the received signal to zholan module, zholan module turns into the serial ports that UART signal output given the singlechip with the signal of receiving. The DB9 joint is connected on the serial ports of the single chip microcomputer through a TTL to 232 conversion module. The RAM and the SD card are used as an external memory of the singlechip and are connected to the singlechip. The sensor input interface is connected to an INT pin of the single chip microcomputer and used as external interrupt input. And the weft selection signal input interface and the driving signal output interface are connected to a common GPIO pin of the singlechip.
Another object of the present invention is to provide an alternating current type ultra wide width electromagnetic drive weft insertion apparatus for implementing the method for controlling the alternating current type ultra wide width electromagnetic drive weft insertion apparatus, the alternating current type ultra wide width electromagnetic drive weft insertion apparatus comprising:
the electromagnetic weft insertion guide rail comprises a sley, a steel reed, an electromagnetic coil, an iron core, a weft insertion device and a weft insertion device pulley; the electromagnetic coil is wound on the iron core, and when the electromagnetic coil is electrified, the electromagnetic coil interacts with the permanent magnet on the weft insertion device to push the weft insertion device to move forwards continuously; the electromagnetic coil and the reed are both fixed on a sley; the weft insertion device pulley is used for reducing friction between the weft insertion device and the electromagnetic weft insertion guide rail;
and when the loom performs weft insertion movement, the power supply is switched on to electrify the coil on the iron core, and the weft insertion device passes through a shed formed by the warps at a constant speed under the action of electromagnetic force and moves to the opposite side.
Furthermore, the weft insertion device is positioned on a track formed by iron cores on two sides; the iron cores on the two sides of the weft insertion device are wound with electromagnetic coils, and alternating current is conducted to the electromagnetic coils;
the electromagnetic coil and the iron core are interacted between the permanent magnet in the direction of changing the magnetic field according to a certain frequency and the two permanent magnets on the weft insertion device, so that the weft insertion device moves;
the S pole of the permanent magnet at the head of the weft insertion device is arranged on the N pole of the electromagnet at the rear point on the sley to attract and is simultaneously repelled by the S pole of the electromagnet arranged on the rack at the front point on the sley; when the gripper arrives at the next position, the current flowing in the coil flows in the reverse direction, and the original N-pole coil is changed into an S-pole coil; the gripper continues to pick forward due to the switching of the electromagnetic polarity; the speed of the weft insertion device is adjusted by adjusting the frequency and voltage of the alternating current flowing in the coils on both sides through an electric energy converter.
Furthermore, the brake device comprises a brake coil, a brake iron core, a brake track, a brake spring, a weft insertion nozzle, a weft insertion position sensor, a weft insertion device pulley, a weft insertion device, a brake rack and a constant weft accumulator;
the number of the brake coils and the number of the brake iron cores are 6, the weft insertion device is attracted to a brake point in a weft insertion device brake device, and the brake track and the brake iron cores are made of silicon steel sheets or pure iron;
the brake track guides the weft insertion device in the brake;
the brake spring is arranged on the brake rack, starts to convert the kinetic energy of the weft insertion device into elastic potential energy in the brake, releases the elastic potential energy after finishing the action of clamping the weft and ejects the weft insertion device into the electromagnetic weft insertion guide rail;
and the weft insertion nozzle penetrates through the weft insertion nozzle, when the weft insertion device reaches a braking point, the weft insertion nozzle is inserted into a weft insertion port in the weft insertion device, the weft insertion nozzle is opened, and the weft is sprayed into the weft insertion device from the weft insertion nozzle. The weft insertion device position sensor is arranged above the brake rack, and detects whether the weft insertion device reaches a braking point in the brake; the weft insertion pulley is arranged between the braking track and the braking iron core, and the friction force between the weft insertion device and the brake is increased in the brake;
the constant weft accumulator is arranged outside the brake frame and used for storing weft.
Another object of the present invention is to provide an information data processing terminal for implementing the method for controlling the ac type ultra-wide electromagnetic drive weft insertion apparatus.
Another object of the present invention is to provide a computer-readable storage medium, which includes instructions that, when run on a computer, cause the computer to execute the control method of the alternating-current ultra-wide electromagnetic-driven weft insertion apparatus.
In summary, the advantages and positive effects of the invention are: the invention adopts the alternating current type electromagnetic weft insertion guide rail device to replace a complex weft insertion mechanism of a rapier loom and a torsion shaft with low energy conversion efficiency of a gripper loom, and the electromagnetic weft insertion rail is provided with a weft insertion device pulley to reduce the friction force between the weft insertion device and a shuttle guiding plate, so that the loom can carry out ultra-wide weft insertion at high speed, and the width of the loom can be improved by 3 m. The electromagnetic braking device is adopted to realize the rapid braking of the weft insertion device and the weft clamping, so that the impact of the weft insertion device is reduced, and the energy conversion efficiency of the loom is improved.
The following table is data comparing the present invention to the prior art:
drawings
Fig. 1 is a schematic structural view of an alternating current type ultra-wide electromagnetic weft insertion guide rail device provided by an embodiment of the invention.
Fig. 2 is a schematic diagram of weft insertion of the alternating current type ultra-wide electromagnetic weft insertion guide rail device according to the embodiment of the invention.
In the figure: (a) side view; (b) looking down.
Fig. 3 is a schematic side view and a schematic top view of an electromagnetic braking device of an alternating current type ultra-wide weft insertion device according to an embodiment of the present invention. In the figure: (A) side view; (B) looking down.
Fig. 4 is a schematic structural diagram of a weft insertion device of the alternating current type ultra-wide electromagnetic drive weft insertion device according to the embodiment of the invention.
Fig. 5 is a schematic diagram of a control system of an alternating current type ultra-wide electromagnetic drive weft insertion device according to an embodiment of the present invention.
Fig. 6 is a flowchart of a control method of the alternating current type ultra-wide electromagnetic drive weft insertion device according to the embodiment of the present invention.
Fig. 7 is a flowchart of a method for controlling an alternating current type ultra-wide electromagnetic drive weft insertion device according to an embodiment of the present invention.
Fig. 8 is a simulated structural diagram of an electromagnetic track provided in an embodiment of the present invention.
Fig. 9 is a graph of magnetic induction of a permanent magnet in a weft insertion housing according to an embodiment of the present invention.
Fig. 10 is an electromagnetic force diagram of the permanent magnet on the left side of the weft insertion device provided by the embodiment of the invention.
Fig. 11 is a diagram showing the electromagnetic force applied to the permanent magnet in the middle of the weft insertion device provided in the embodiment of the present invention.
Fig. 12 is an electromagnetic force diagram of a permanent magnet on the right side of the weft insertion device provided by the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the prior art, a weft insertion mechanism of a rapier loom is complex and the energy conversion efficiency of a gripper loom is low. The friction force exists between the weft insertion device and the shuttle guiding plate, so that the loom cannot carry out ultra-wide weft insertion at high speed, and the width of the loom is low. And the prior art weft insertion device has large impact and low energy conversion efficiency of the weaving machine.
Aiming at the problems in the prior art, the invention provides an alternating current type ultra-wide electromagnetic drive weft insertion device, a control system and a control method, and the invention is described in detail with reference to the attached drawings.
As shown in fig. 1, an alternating current type ultra-wide electromagnetic drive weft insertion device comprises an electromagnetic weft insertion guide rail. The electromagnetic weft insertion guide rail comprises a sley, a reed (not shown), an electromagnetic coil, an iron core, a weft insertion device and a weft insertion device pulley. The current passed by the electromagnetic coil is alternating current, the electromagnetic coil is wound on the iron core, and when the electromagnetic coil is electrified, the electromagnetic coil interacts with the permanent magnet on the weft insertion device to push the weft insertion device to move forwards continuously. The iron core is made of silicon steel sheets or pure iron, and plays a role in an electromagnetic drive weft insertion device in forming a rigid magnetic flux loop by a magnetic field generated by an electromagnetic coil. And the weft insertion device is provided with two permanent magnets. The iron core, the electromagnetic coil and the reed are all fixed on the sley. The sley is a material which has low magnetic permeability and can not be magnetized. The weft insertion device pulley is used for reducing friction between the weft insertion device and the electromagnetic weft insertion guide rail. When the loom is going to carry out weft insertion movement, the controller turns on the power supply to electrify the coil on the iron core, and the weft insertion device passes through a shed formed by warps and moves towards the opposite side at a constant speed under the action of electromagnetic force.
As shown in fig. 2, the weft insertion device is positioned on a track formed by iron cores on two sides. The iron cores on the two sides of the weft insertion device are wound with electromagnetic coils, the electromagnetic coils are electrified with alternating current with certain frequency and voltage, and as shown in a plan view of fig. 2, the electromagnetic coils and the iron cores can be regarded as permanent magnets in a magnetic field direction changing according to certain frequency. The permanent magnet which constantly changes the direction of the magnetic field interacts with the two permanent magnets on the weft insertion device, so that the weft insertion device can move. The weft insertion advances because the S pole of the permanent magnet at the head of the weft insertion is attracted by the N pole of the electromagnet mounted at a later point on the sley and is repelled by the S pole of the electromagnet mounted on the frame at a slightly earlier point on the sley. When the gripper reaches the next position, the direction of current flow in the coil is reversed. The result is that the original N-pole coil now becomes the S-pole coil. And vice versa. In this way, the gripper continues to pick forward due to the switching of the electromagnetic polarities. The speed of the weft insertion device is adjusted by adjusting the frequency and voltage of the alternating current flowing in the coils on both sides by means of an electric energy converter.
As shown in fig. 3, the brake device includes a brake coil, a brake core, a brake rail, a brake spring, a weft insertion nozzle, a weft insertion position sensor, a weft inserter pulley, a weft inserter, a brake frame, and a constant weft accumulator. The number of the brake coils and the number of the brake iron cores are 6, the brake device of the weft insertion device has the function of attracting the weft insertion device to a brake point, and the brake track and the brake iron cores are made of silicon steel sheets or pure iron. The braking track functions in the brake to guide the weft insertion device. The brake spring is arranged on the brake frame, and plays a role in converting the kinetic energy of the weft insertion device into elastic potential energy in the brake, so that the weft insertion device is prevented from being severely impacted. After finishing the action of clamping the weft, releasing elastic potential energy to eject the weft insertion device into the electromagnetic weft insertion guide rail. The weft insertion nozzle penetrates the weft, when the weft insertion device reaches a braking point, the weft insertion nozzle is inserted into a weft insertion opening in the weft insertion device, a weft insertion nozzle (not shown) is opened at the moment, and the weft is sprayed into the weft insertion device from the weft insertion nozzle. The weft insertion position sensor is mounted above the brake frame (not shown) and functions in the brake to detect whether the weft insertion reaches the braking point. The weft insertion pulley is installed between the braking rail and the braking iron core, and plays a role in the brake in the friction force between the weft insertion device and the brake. The constant weft accumulator is arranged outside the brake frame. The function in this device is to store the weft thread. The brake works specifically as follows, when the weft insertion device moving at high speed passes through the electromagnetic weft insertion guide rail in the shed from the opposite side brake and enters the brake at the side, the weft insertion device is decelerated sharply under the action of the brake spring, when the weft insertion device position sensor detects that the weft insertion device reaches a brake point, the brake driver controls the brake coil in the brake to be electrified, and the weft insertion device is attracted to the brake point. And then the weft insertion nozzle driver controls the weft insertion nozzle to jet the weft into the weft insertion device from the weft insertion nozzle, and the brake driver controls the brake coil to be powered off. The weft insertion device is quickly ejected into the electromagnetic weft insertion guide rail by the brake spring under the condition that the brake coil and the brake iron core are not attracted.
As shown in fig. 4, the weft inserter includes 3 permanent magnets, a weft pressing spring piece, a weft inlet and a bobbin case (not shown). The magnetizing direction of the permanent magnet is shown in the figure. The weft insertion opening is a place where a weft insertion nozzle is inserted. And the weft pressing spring piece is pushed open by the weft insertion nozzle after the weft insertion nozzle is inserted into the weft inlet, and then the weft is sprayed into the weft insertion device under the spraying of the weft insertion nozzle.
As shown in fig. 5, the alternating-current ultra-wide electromagnetic drive weft insertion control system comprises an upper computer, a controller, a first brake driver, a second brake driver, an electromagnetic weft insertion rail power driver, a weft insertion nozzle driver, a first weft insertion device position sensor, a second weft insertion device position sensor, a brake coil, an electromagnetic weft insertion rail and a weft insertion nozzle. The upper computer is used as the brain of the control system, can perform graphic imaging operation on the controller, and sends a starting instruction to the controller through the network port to transmit control data and the like. The controller comprises an RJ45 network port, a DB9 serial port, an RAM, an SD card, a sensor input interface, a signal input interface and a driver signal output interface. The controller controls whether the first brake driver and the second brake driver energize the brake coil or not according to the received weft insertion device position sensor signal. And the first brake driver and the second brake driver are respectively connected with 3 brake coils. And the electromagnetic weft insertion track power supply driver is connected with an alternating current power supply and an electromagnetic weft insertion track. The controller judges the direction of the electromagnetic weft insertion track power supply driver for inputting alternating current to the electromagnetic weft insertion track through the in-out signal of the weft insertion device position sensor.
As shown in fig. 6, an embodiment of the present invention provides a method for controlling an ac ultra-wide electromagnetic weft insertion device, including:
s101, carrying out graphical imaging operation on the controller through the upper computer, sending a starting instruction to the controller through the network port, and transmitting control data.
And S102, the controller controls whether the first brake driver and the second brake driver energize the brake coil or not and brake according to the received signals of the weft insertion device position sensor.
S103, the controller judges the direction of the electromagnetic weft insertion track power supply driver for inputting alternating current to the electromagnetic weft insertion track according to the in-out signal of the weft insertion device position sensor.
In step S102, the method for controlling the first brake driver and the second brake driver by the controller includes: when the weft insertion device moving at a high speed penetrates through an electromagnetic weft insertion guide rail in a shed from the opposite side brake and enters the brake at the side, the weft insertion device is rapidly decelerated under the action of a brake spring, and when a position sensor of the weft insertion device detects that the weft insertion device reaches a brake point, a brake driver controls a brake coil in the brake to be electrified, and the weft insertion device is sucked on the brake point; then the weft insertion nozzle driver controls the weft insertion nozzle to jet the weft thread into the weft insertion device from the weft insertion nozzle, and the brake driver controls the brake coil to be powered off.
The weft insertion device is ejected into the electromagnetic weft insertion guide rail by the brake spring under the condition that the brake coil and the brake iron core are not attracted.
Fig. 7 is a flowchart of a method for controlling an alternating current type ultra-wide electromagnetic drive weft insertion device according to an embodiment of the present invention.
The invention is further described below in connection with specific simulations.
Fig. 8 is a simulation structure view of an electromagnetic rail, in which an upper frame is an iron core, a wide frame is an electromagnetic coil, a lower frame is a weft inserter housing, and a permanent magnet is provided in the weft inserter housing.
FIG. 9 is a graph of magnetic induction for a permanent magnet in the weft inserter housing. The arrow above the permanent magnet indicates the magnetic induction of the permanent magnet.
FIG. 10 shows the electromagnetic force applied to the permanent magnet on the left side of the weft insertion device, wherein the force applied mainly along the Z-axis is about-6.9N.
FIG. 11 shows the electromagnetic force applied to the permanent magnet in the middle of the weft insertion device, wherein the force applied mainly along the Z-axis is about-6.1N.
FIG. 12 shows the electromagnetic force applied to the permanent magnet on the right side of the weft insertion device, wherein the force applied mainly along the Z axis is about-5.7N. The total electromagnetic force experienced by the three permanent magnets is 18.7N. The weft inserter mass was 20 g. The friction coefficient is 0.17, so the friction force borne by the weft insertion device is 0.0034N, and the electromagnetic force borne by the weft insertion device is far greater than the friction force borne by the weft insertion device.
In the above embodiments, the implementation may be wholly or partially realized by software, hardware, firmware, or any combination thereof. When used in whole or in part, can be implemented in a computer program product that includes one or more computer instructions. When loaded or executed on a computer, cause the flow or functions according to embodiments of the invention to occur, in whole or in part. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another, for example, the computer instructions may be transmitted from one website site, computer, server, or data center to another website site, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, Digital Subscriber Line (DSL), or wireless (e.g., infrared, wireless, microwave, etc.)). The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that includes one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium (e.g., Solid State Disk (SSD)), among others.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A control method of an alternating current type ultra-wide width electromagnetic drive weft insertion device is characterized by comprising the following steps:
the alternating current type electromagnetic weft insertion guide rail device is adopted to replace a weft insertion mechanism of a rapier loom and a torsion shaft for energy conversion of a gripper loom, and the friction force between a weft insertion device and a shuttle guiding sheet is reduced through a weft insertion device pulley arranged on an electromagnetic weft insertion rail, so that the loom can carry out ultra-wide weft insertion at high speed;
and the electromagnetic braking device is adopted to realize the rapid braking and weft holding of the weft insertion device, so that the impact of the weft insertion device is reduced.
2. The control method of the alternating current type ultra-wide electromagnetic drive weft insertion device according to claim 1, wherein the control method of the alternating current type ultra-wide electromagnetic drive weft insertion device specifically comprises:
carrying out graphical imaging operation on the controller through the upper computer, sending a starting instruction to the controller through the network port, and transmitting control data;
the controller controls whether the first brake driver and the second brake driver energize the brake coil or not and brakes the weft insertion device according to the received signals of the position sensor of the weft insertion device;
the controller judges the direction of the electromagnetic weft insertion track power supply driver for inputting alternating current to the electromagnetic weft insertion track according to the in-out signal of the weft insertion device position sensor.
3. The method for controlling an alternating current ultra-wide electromagnetic drive weft insertion device according to claim 1, wherein the method for controlling the brake-one driver and the brake-two driver by the controller comprises the steps of:
when the weft insertion device moving at a high speed penetrates through an electromagnetic weft insertion guide rail in a shed from the opposite side brake and enters the brake at the side, the weft insertion device is rapidly decelerated under the action of a brake spring, and when a position sensor of the weft insertion device detects that the weft insertion device reaches a brake point, a brake driver controls a brake coil in the brake to be electrified, and the weft insertion device is sucked on the brake point; then the weft insertion nozzle driver controls the weft insertion nozzle to jet the weft into the weft insertion device from the weft insertion nozzle, and the brake driver controls the brake coil to be powered off;
the weft insertion device is ejected into the electromagnetic weft insertion guide rail by the brake spring under the condition that the brake coil and the brake iron core are not attracted.
4. A control system of an alternating current type ultra-wide width electromagnetic drive weft insertion device for implementing the control method of the alternating current type ultra-wide width electromagnetic drive weft insertion device according to any one of claims 1 to 3, wherein the control system of the alternating current type ultra-wide width electromagnetic drive weft insertion device comprises: the device comprises an upper computer, a controller, a first brake driver, a second brake driver, an electromagnetic weft insertion rail power supply driver, a weft insertion nozzle driver, a first weft insertion device position sensor, a second weft insertion device position sensor, a brake coil, an electromagnetic weft insertion rail and a weft insertion nozzle;
the upper computer performs graphical imaging operation on the controller, sends a starting-up instruction to the controller through the network port and transmits control data;
the controller controls whether the first brake driver and the second brake driver energize the brake coil or not according to the received signals of the weft insertion device position sensor; the controller judges the direction of the electromagnetic weft insertion track power supply driver for inputting alternating current to the electromagnetic weft insertion track through the in-out signal of the weft insertion device position sensor;
the first brake driver and the second brake driver are respectively connected with a plurality of brake coils;
and the electromagnetic weft insertion track power supply driver is connected with an alternating current power supply and an electromagnetic weft insertion track.
5. The control system of the alternating current ultra-wide amplitude electromagnetic drive weft insertion device according to claim 4, wherein the controller comprises an RJ45 net port, a DB9 serial port, a RAM, an SD card, a sensor input interface, a selection signal input interface and a driver signal output interface;
the RJ45 network port is an Ethernet connection port and is connected with the network port of the PC;
the RJ45 sends the received signals to the Zhuolan module, and the Zhuolan module converts the received signals into UART signals and outputs the UART signals to a serial port of the single chip microcomputer;
the DB9 joint is connected to the serial port of the singlechip through a TTL to 232 module;
the RAM and the SD card are used as an external memory of the singlechip and are connected to the singlechip;
the sensor input interface is connected to an INT pin of the singlechip and used as external interrupt input;
and the weft selection signal input interface and the driving signal output interface are connected to a common GPIO pin of the singlechip.
6. An alternating current type ultra-wide width electromagnetic drive weft insertion device for implementing the control method of the alternating current type ultra-wide width electromagnetic drive weft insertion device according to any one of claims 1 to 3, characterized in that the alternating current type ultra-wide width electromagnetic drive weft insertion device comprises:
the electromagnetic weft insertion guide rail comprises a sley, a steel reed, an electromagnetic coil, an iron core, a weft insertion device and a weft insertion device pulley; the electromagnetic coil is wound on the iron core, and when the electromagnetic coil is electrified, the electromagnetic coil interacts with the permanent magnet on the weft insertion device to push the weft insertion device to move forwards continuously; the electromagnetic coil and the reed are both fixed on a sley; the weft insertion device pulley is used for reducing friction between the weft insertion device and the electromagnetic weft insertion guide rail;
and when the loom performs weft insertion movement, the power supply is switched on to electrify the coil on the iron core, and the weft insertion device passes through a shed formed by the warps at a constant speed under the action of electromagnetic force and moves to the opposite side.
7. The alternating-current ultra-wide electromagnetic drive weft insertion device according to claim 6, wherein the weft inserter is positioned on a track formed by iron cores on two sides; the iron cores on the two sides of the weft insertion device are wound with electromagnetic coils, and alternating current is conducted to the electromagnetic coils;
the electromagnetic coil and the iron core are interacted between the permanent magnet in the direction of changing the magnetic field according to a certain frequency and the two permanent magnets on the weft insertion device, so that the weft insertion device moves;
the S pole of the permanent magnet at the head of the weft insertion device is arranged on the N pole of the electromagnet at the rear point on the sley to attract and is simultaneously repelled by the S pole of the electromagnet arranged on the rack at the front point on the sley; when the gripper arrives at the next position, the current flowing in the coil flows in the reverse direction, and the original N-pole coil is changed into an S-pole coil; the gripper continues to pick forward due to the switching of the electromagnetic polarity; the speed of the weft insertion device is adjusted by adjusting the frequency and voltage of the alternating current flowing in the coils on both sides through an electric energy converter.
8. The alternating current ultra-wide electromagnetic drive weft insertion apparatus according to claim 6,
the brake device comprises a brake coil, a brake iron core, a brake track, a brake spring, a weft insertion nozzle, a weft insertion position sensor, a weft insertion device pulley, a weft insertion device, a brake rack and a constant weft accumulator;
the number of the brake coils and the number of the brake iron cores are 6, the weft insertion device is attracted to a brake point in a weft insertion device brake device, and the brake track and the brake iron cores are made of silicon steel sheets or pure iron;
the brake track guides the weft insertion device in the brake;
the brake spring is arranged on the brake rack, starts to convert the kinetic energy of the weft insertion device into elastic potential energy in the brake, releases the elastic potential energy after finishing the action of clamping the weft and ejects the weft insertion device into the electromagnetic weft insertion guide rail;
and the weft insertion nozzle penetrates through the weft insertion nozzle, when the weft insertion device reaches a braking point, the weft insertion nozzle is inserted into a weft insertion port in the weft insertion device, the weft insertion nozzle is opened, and the weft is sprayed into the weft insertion device from the weft insertion nozzle. The weft insertion device position sensor is arranged above the brake rack, and detects whether the weft insertion device reaches a braking point in the brake; the weft insertion pulley is arranged between the braking track and the braking iron core, and the friction force between the weft insertion device and the brake is increased in the brake;
the constant weft accumulator is arranged outside the brake frame and used for storing weft.
9. An information data processing terminal for realizing the control method of the alternating current type ultra-wide electromagnetic drive weft insertion device according to any one of claims 1 to 3.
10. A computer-readable storage medium comprising instructions which, when run on a computer, cause the computer to execute the control method of the alternating-current ultra-wide electromagnetic-drive weft insertion apparatus according to any one of claims 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010290710.8A CN111321505A (en) | 2020-04-14 | 2020-04-14 | Alternating current type ultra-wide electromagnetic drive weft insertion device, control system and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010290710.8A CN111321505A (en) | 2020-04-14 | 2020-04-14 | Alternating current type ultra-wide electromagnetic drive weft insertion device, control system and control method |
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| Publication Number | Publication Date |
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| CN111321505A true CN111321505A (en) | 2020-06-23 |
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|---|---|---|---|
| CN202010290710.8A Pending CN111321505A (en) | 2020-04-14 | 2020-04-14 | Alternating current type ultra-wide electromagnetic drive weft insertion device, control system and control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111321505A (en) |
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2020
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