阅读说明：本技术 一种用于纺织机的磁悬浮轨道组件及纺织机 (Magnetic suspension track assembly for textile machine and textile machine ) 是由 朱里 吴晓光 于 2020-06-12 设计创作，主要内容包括：本申请公开了一种用于纺织机的磁悬浮轨道组件及纺织机,包括：轨道载体,呈长条状；铁芯组件,设置于轨道载体,铁芯组件包括多个铁芯单体,各铁芯单体沿轨道载体的长度方向间隔排列布置；多个电磁线圈组,各电磁线圈组均沿轨道载体的长度方向排列布置,每个电磁线圈组均包括三个电磁线圈,三个电磁线圈连接三相电路；其中,同一个电磁线圈组中,每个电磁线圈均绕至少一个铁芯单体布置,且各电磁线圈沿轨道载体的长度方向排列布置,每个电磁线圈组用于产生行波磁场,以驱动带磁性的梭体沿轨道载体的长度方向运动。由于梭体的运动过程中呈悬空状态,故梭体的推进过程不会产生噪音,同时其功能方式十分简单,并且也更加节能环保。(The application discloses a magnetic levitation track subassembly and weaving machine for weaving machine includes: the track carrier is in a strip shape; the iron core assembly is arranged on the track carrier and comprises a plurality of iron core monomers, and the iron core monomers are arranged at intervals along the length direction of the track carrier; the electromagnetic coil groups are arranged along the length direction of the track carrier, each electromagnetic coil group comprises three electromagnetic coils, and the three electromagnetic coils are connected with a three-phase circuit; in the same electromagnetic coil group, each electromagnetic coil is arranged around at least one iron core monomer, the electromagnetic coils are arranged along the length direction of the track carrier, and each electromagnetic coil group is used for generating a traveling magnetic field so as to drive the magnetic shuttle body to move along the length direction of the track carrier. Because the shuttle body is in a suspended state in the motion process, the shuttle body does not generate noise in the propulsion process, and meanwhile, the shuttle body has very simple function mode and is more energy-saving and environment-friendly.)

1. A magnetic levitation track assembly for a textile machine, comprising:

the track carrier is in a strip shape;

the iron core assembly is arranged on the track carrier and comprises a plurality of iron core monomers, and the iron core monomers are arranged at intervals along the length direction of the track carrier;

the electromagnetic coil groups are arranged along the length direction of the track carrier and each electromagnetic coil group comprises three electromagnetic coils which are connected with a three-phase circuit;

in the same electromagnetic coil group, each electromagnetic coil is arranged around at least one iron core monomer, the electromagnetic coils are arranged in a row along the length direction of the track carrier, and each electromagnetic coil group is used for generating a traveling wave magnetic field so as to drive the magnetic shuttle body to move along the length direction of the track carrier.

2. The magnetic levitation track assembly as claimed in claim 1,

in the same electromagnetic coil group, two adjacent electromagnetic coils at least surround one iron core single body together.

3. The magnetic levitation track assembly as claimed in claim 2,

in the same electromagnetic coil group, each electromagnetic coil is arranged around three adjacent iron core single bodies.

4. The magnetic levitation track assembly as claimed in claim 2,

in the same electromagnetic coil group, two adjacent electromagnetic coils surround the two iron core single bodies together.

5. The magnetic levitation track assembly as claimed in claim 1,

the electromagnetic coils with the same phase in each electromagnetic coil group are connected in series; or

The electromagnetic coils with the same phase in each electromagnetic coil group are connected in parallel.

6. The magnetic levitation track assembly as claimed in claim 1,

each electromagnetic coil group and each iron core monomer are arranged on the same side surface of the track carrier.

7. The magnetic levitation track assembly as claimed in claim 1,

the two iron core components are arranged on the track carrier and comprise a plurality of iron core monomers, the iron core monomers are arranged at intervals along the length direction of the track carrier, and the two iron core components are arranged side by side;

the iron core units in the two iron core assemblies are oppositely arranged in a one-to-one correspondence mode, the two iron core assemblies jointly define an orbit groove with a V-shaped cross section, and the concave portion of the orbit groove faces the shuttle body.

8. The magnetic levitation track assembly as recited in claim 1, further comprising:

a first driving device including at least two first electromagnets arranged in a row along a traveling direction of the shuttle body, a magnetic field intensity generated by each of the first electromagnets gradually increasing along the traveling direction of the shuttle body, wherein each of the first electromagnets is used to drive the magnetized shuttle body along the traveling direction;

and the second driving device and the first driving device are oppositely arranged at two sides of the travel stroke of the shuttle body, the second driving device comprises at least two second electromagnets, the two second electromagnets are arranged in a direction in which the second driving device points to the first driving device, and the magnetic field intensity generated by each second electromagnet is gradually increased along the direction in which the second driving device points to the first driving device, wherein each second electromagnet is used for driving the shuttle body along the direction in which the second driving device points to the first driving device.

9. The magnetic levitation track assembly as recited in claim 8,

the first driving device comprises a first bracket, the first bracket is provided with first elastic pieces, the number of the first elastic pieces is the same as that of the first electromagnets, the first electromagnets are connected to the first elastic pieces in a one-to-one correspondence manner, and when the first electromagnets generate displacement along the direction of the second driving device pointing to the first driving device, each first elastic body gives elastic thrust to the first electromagnets connected with the first elastic pieces towards the second driving device; and/or

The second driving device comprises a second support, second elastic pieces with the same number as the second electromagnets are arranged on the second support, the second electromagnets are connected to the second elastic pieces in a one-to-one correspondence mode, and when the second electromagnets generate displacement along the direction in which the second driving device points to the second driving device, each second elastic body gives elastic thrust to the second electromagnets connected with the second elastic body and points to the second driving device.

10. A textile machine, comprising:

the magnetic levitation track assembly as recited in any one of claims 1-9;

the shuttle body.

Technical Field

The application relates to a weaving equipment, especially relates to a magnetic suspension track subassembly and weaving machine for weaving machine.

Background

Weaving machines can be divided into shuttle weaving machines and shuttleless weaving machines according to the weaving process principle. The shuttle loom completes the weaving of warp and weft yarns by the reciprocating linear motion of the weft insertion shuttle as a weft insertion device and the alternate transformation action of the warp yarns. Each loom is provided with several shuttles for introducing weft yarns into the shed from the weft supply side of the loom in sequence. The existing textile machine is troublesome in driving process of the shuttle body, high in noise and not energy-saving and environment-friendly enough.

Disclosure of Invention

The application provides a magnetic suspension track subassembly and weaving machine for weaving machine has advantages such as the energy is simple, clean environmental protection, noise pollution free.

According to one aspect of the present application, there is provided a magnetic levitation track assembly for a textile machine, comprising:

the track carrier is in a strip shape;

the iron core assembly is arranged on the track carrier and comprises a plurality of iron core monomers, and the iron core monomers are arranged at intervals along the length direction of the track carrier;

the electromagnetic coil groups are arranged along the length direction of the track carrier, each electromagnetic coil group comprises three electromagnetic coils, and the three electromagnetic coils are connected with a three-phase circuit;

in the same electromagnetic coil group, each electromagnetic coil is arranged around at least one iron core monomer, the electromagnetic coils are arranged along the length direction of the track carrier, and each electromagnetic coil group is used for generating a traveling magnetic field so as to drive the magnetic shuttle body to move along the length direction of the track carrier.

According to some embodiments, in the same electromagnetic coil group, two adjacent electromagnetic coils at least jointly surround one single iron core.

According to some embodiments, each electromagnetic coil is arranged around three adjacent single iron cores in the same electromagnetic coil group.

According to some embodiments, in the same electromagnetic coil group, two adjacent electromagnetic coils jointly surround two single iron cores.

According to some embodiments, the same phase electromagnetic coils in each electromagnetic coil group are connected in series; or

And the electromagnetic coils with the same phase in each electromagnetic coil group are connected in parallel.

According to some embodiments, each electromagnetic coil group and each iron core unit are arranged on the same side surface of the track carrier.

According to some embodiments, the track carrier comprises two iron core assemblies, wherein the two iron core assemblies are arranged on the track carrier and each comprise a plurality of iron core monomers, the iron core monomers are arranged at intervals along the length direction of the track carrier, and the two iron core assemblies are arranged side by side;

the iron core units in the two iron core assemblies are oppositely arranged in a one-to-one correspondence mode, the two iron core assemblies jointly define an orbit groove with a V-shaped cross section, and the concave portion of the orbit groove faces the shuttle body.

According to some embodiments, further comprising:

a first driving device including at least two first electromagnets arranged in a row along a traveling direction of the shuttle body, a magnetic field intensity generated by each of the first electromagnets gradually increasing along the traveling direction of the shuttle body, wherein each of the first electromagnets is used to drive the magnetized shuttle body along the traveling direction;

and the second driving device and the first driving device are oppositely arranged at two sides of the travel stroke of the shuttle body, the second driving device comprises at least two second electromagnets, the two second electromagnets are arranged in a direction in which the second driving device points to the first driving device, and the magnetic field intensity generated by each second electromagnet is gradually increased along the direction in which the second driving device points to the first driving device, wherein each second electromagnet is used for driving the shuttle body along the direction in which the second driving device points to the first driving device.

According to some embodiments, the first driving device comprises a first bracket, the first bracket is provided with a same number of first elastic pieces as the first electromagnets, each first electromagnet is connected to each first elastic piece in a one-to-one correspondence manner, and each first elastic body gives elastic thrust to the first electromagnet connected with the first elastic piece towards the second driving device when each first electromagnet generates displacement along the direction in which the second driving device points to the first driving device; and/or

The second driving device comprises a second support, second elastic pieces with the same number as the second electromagnets are arranged on the second support, the second electromagnets are connected to the second elastic pieces in a one-to-one correspondence mode, and when the second electromagnets generate displacement along the direction in which the second driving device points to the second driving device, each second elastic body gives elastic thrust to the second electromagnets connected with the second elastic body and points to the second driving device.

A second aspect of the present application also provides a textile machine comprising:

a magnetic levitation track assembly as claimed in any one of the preceding claims and a shuttle body.

The application provides a magnetic suspension track subassembly for weaving machine, this magnetic suspension track subassembly is used for driving shuttle motion to make the shuttle drive the woof motion, thereby realize weaving of warp and woof. Specifically, the driving assembly in the application drives the shuttle body by adopting magnetic force, namely when the shuttle body is magnetic, each electromagnetic coil group is connected with three circuits to generate a traveling wave magnetic field, and the traveling wave magnetic field is used for pushing the shuttle body to move. Because the shuttle body is in a suspended state in the motion process, the shuttle body does not generate noise in the propulsion process, and meanwhile, the shuttle body has very simple function mode and is more energy-saving and environment-friendly.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic perspective view of a first driving device in an embodiment provided in the present application;

FIG. 2 is a schematic front view of a first driving device in an embodiment provided in the present application;

FIG. 3 is a schematic front view of a shuttle drive assembly in one embodiment provided herein;

FIG. 4 is a perspective view of a magnetic levitation track assembly disposed on a textile machine in one embodiment provided herein;

FIG. 5 is a perspective view of a magnetic levitation track assembly and a shuttle body in an embodiment provided herein;

FIG. 6 is a partial view of a front view of a magnetic levitation track assembly in combination with a shuttle body in one embodiment provided herein;

FIG. 7 is a split view of a traveling wave magnetic field finite element mesh of a magnetic levitation track assembly in one embodiment provided herein;

FIG. 8 is a traveling wave magnetic field strength profile of a magnetic levitation track assembly in one embodiment provided herein;

FIG. 9 is a graph of the magnetic induction of a traveling wave magnetic field at different current phase angles for a magnetic levitation track assembly in one embodiment provided herein;

FIG. 10 is a magnetic force diagram of a traveling wave magnetic field at different current phase angles for a magnetic levitation track assembly in one embodiment provided herein;

fig. 11 is a schematic combination diagram of two sets of core assemblies in an embodiment provided herein.

Detailed Description

Weaving machines can be divided into shuttle weaving machines and shuttleless weaving machines according to the weaving process principle. The shuttle loom completes the weaving of warp and weft yarns by the reciprocating linear motion of the weft insertion shuttle as a weft insertion device and the alternate transformation action of the warp yarns. Each loom is provided with several shuttles for introducing weft yarns into the shed from the weft supply side of the loom in sequence. The existing textile machine is troublesome in driving process of the shuttle body, high in noise and not energy-saving and environment-friendly.

As shown in fig. 1 to 3, the embodiment of the present application provides a shuttle body driving assembly for a textile machine, which is used for driving a shuttle body to move, so that the shuttle body drives a weft yarn to move, thereby realizing the weaving of warp yarns and weft yarns. Specifically, when the driving assembly in the present application drives the shuttle body by using a magnetic force, that is, the shuttle body itself has magnetism, the magnetism generated by the first electromagnet 110 may be opposite to (instantaneous magnetism of) the shuttle body, thereby pushing the shuttle body out in the traveling direction thereof. In particular, the shuttle driving device in the present application needs to work in cooperation with the shuttle with magnetism, and the magnetism of the shuttle needs to be adapted to the magnetism of the shuttle driving device. The magnetic source of the shuttle body can be set arbitrarily, for example, the shuttle body can be a permanent magnet or an electromagnet, and is not limited specifically here.

The shuttle body driving assembly includes a first driving device 100, and the first driving device 100 includes at least two first electromagnets 110. The first electromagnet 110 is configured to be magnetically energized. And the first electromagnet 110 is magnetized to generate a repulsive force with the shuttle to push the shuttle to move in the traveling direction. Specifically, two first electromagnets 110 are arranged in line in the traveling direction of the shuttle body, and the magnetic field intensity generated by each first electromagnet 110 is gradually increased in the traveling direction of the shuttle body, wherein each first electromagnet 110 is used for driving the magnetized shuttle body in the traveling direction. That is, the shuttle driving device in the embodiment of the present application adopts a multi-stage propulsion scheme, and for an electromagnetic propulsion device with multi-stage drive coils, it is most important to control the discharge of each stage of drive coils and the length of the discharge time thereof, because the shuttle already has a certain speed after the first stage of coil is accelerated, and the speed of the shuttle is greater than that of the first stage of coil during the acceleration of the second stage of coil. Therefore, the power supply of the following two drive coils should be larger in size theoretically, so that the utilization rate is improved.

In order to realize multi-stage propulsion, each first electromagnet 110 may be energized simultaneously in one embodiment, or the first electromagnets 110 may be energized sequentially in the traveling direction of the shuttle, and only the electromagnet for propelling the shuttle is energized at each time.

To achieve the effect of sequential energization, in this embodiment, the shuttle driving assembly further includes a timing relay 130. The timing magnetic field is generated by sequentially energizing the solenoid (i.e., the first exciting coil in the first electromagnet 110) by means of the timing relay 130, so as to accelerate the shuttle. For the timing relay 130, a timing control circuit is needed, and the control delay time is mainly determined by the speed of the shuttle body. It is assumed that the shuttle is always on the axis of the solenoid. Assuming the velocity of the shuttle after the first stage acceleration and the time required for the shuttle to reach the second stage acceleration position, this calculated time is the time required for the second stage drive coil to be delayed. The third stage delay time and so on.

For the magnetic field strength calculation in the first electromagnet 110, ideally, the following formula may be satisfied:

wherein: b-magnetic induction intensity; μ 0-vacuum permeability; n-number of coil turns; i-coil current; beta 1 and beta 2 are included angles between the shuttle body and the electrified coil respectively.

The magnetic induction inside the coil is related to the coil current and the coil configuration, and in order to maximize the electromagnetic driving force Fx received by the shuttle, it is necessary to increase the magnetic field strength H and the magnetic induction B inside the coil as much as possible, and to manufacture the shuttle from a ferromagnetic material having a high magnetic permeability μ and a high saturation magnetic induction.

The system energy consumption is analyzed as follows, and when the coil (i.e. the coil in the first electromagnet 110, the same applies below) passes through the current, the shuttle body is acted by the lorentz magnetic force to move along the track direction. When the shuttle body moves along the track, induced voltage is required to be generated at the two ends of the track again, and according to the electromagnetic theorem, the induced voltage is as follows:

the induced voltage is divided into 2 parts: v_eThe voltage generated by charging at two ends of the coil equivalent inductor; v_bIs the voltage generated by the magnetic force lines cut by the shuttle body movement at the two ends of the shuttle body.

Electric power P of the system_EThe product of the voltage across the shuttle and the current I flowing through the shuttle is:

P_E＝I＝V_eI+V_bI

according to electromagnetic theory, the electromagnetic force can be expressed as:

wherein: f_LThe driving force is electromagnetic driving force, the shuttle body is driven forwards on the track, the energy stored by the system is mainly inductive magnetic energy distributed in the coil, the L' is inductance increment, the x is displacement of the shuttle body, and in order to comprehensively analyze the efficiency of the exciting coil in driving, the efficiency is divided into system efficiency η_sAnd emission efficiency η_LDefined as:

in the formula: e_pIs the kinetic energy of the shuttle body; e_cStoring energy for the coil; e_iThe total energy input to the coil during transmission of the shuttle. E_iThe expression is as follows:

in the formula: tau is the on-orbit time of the shuttle body; u shape_iIs the input voltage. U shape_iThe voltage can be given through the test process, and can also be calculated through theoretical calculation:

in the formula V_arcAnd (4) arc voltage. The energy E input from the transmitting end to the shuttle body can be obtained_iComprises the following steps:

the electromagnetic shuttle body emission efficiency refers to the actual energy utilization rate of the shuttle body, and mainly comprises 4 aspects: kinetic energy of shuttle motion, mechanical energy consumption in shuttle motion, magnetic energy loss in the coil, and joule heat loss in the coil.

The mechanical energy consumption of the shuttle motion is mainly friction and aerodynamic drag losses. By adopting the measures of reducing the friction coefficient between the shuttle body and the coil and the like, the mechanical energy consumption can be reduced to be negligible.

The magnetic energy loss is mainly the energy stored in the inductance in the coil, and the stored energy size depends on the change of the current. If the power supply current adopts a pulse current form, part of magnetic energy can be recovered; if the current end drops to 0, the magnetic energy can be fully recovered.

One part of the joule heat loss is the heat loss of the shuttle itself, the heat loss of the shuttle is small, and the other part of the joule heat loss is the heat loss caused by the internal resistance of the coil in the milliohm per meter level.

The system efficiency is a measure of the overall efficiency of the electromagnetic emission system, reflecting the efficiency in the overall loop system. In addition to the above energy consumption, Ec in system efficiency also includes energy consumption of the power supply loop, such as relay 130 switching energy consumption, transmission line energy consumption, circuit distribution inductance, inductive energy storage in the pulse forming network, residual energy in the capacitor, and the like.

The transmission efficiency of the shuttle body is mainly analyzed, the efficiency of electromagnetically driving the gripper is related, and the skin effect of air resistance and current is neglected in the model by neglecting friction energy consumption. The field coil is powered in a pulsed current mode, the current through the gripper increases rapidly from zero and then decreases, when the gripper leaves the coil, the current decreases to 0 and there is no stored energy in the inductance of the circuit, so E_L0. The transmission drive efficiency of the coil is:

wherein: the energy consumption expression of distributed resistance of the coil and the gripper is as follows:

the exciting coil is distributed with inductive energy storage:

kinetic energy of the gripper:

since the current is not a constant value due to the action of the pulse current, the kinetic energy expression is as follows:

with pulsed current supply, the gripper is not uniformly stressed, but as the time of the gripper's coil travel increases, the gripper velocity and displacement increase. Based on formula

Under the condition that the length of the coil combination is reasonably designed, when the speed of the gripper reaches the maximum, the gripper leaves the coil and enters the weft insertion track, so that the maximum energy consumption expression of the distributed resistance is as follows:

the system emission efficiency expression can be rewritten as:

wherein: x, v_maxAre all maximum values.

The shape of each first electromagnet 110 may be arbitrarily set, and it is only necessary that it can propel the shuttle by magnetic force. In a preferred embodiment, each first electromagnet 110 is annular, and the center of each first electromagnet 110 defines a first travel passage 112 for the shuttle to pass through, and the axes of each first travel passage 112 coincide. The first electromagnet 110 sequentially passes through each of the first travel passages 112 during the advancing of the shuttle. The annular structure of the first electromagnet 110 can improve the energy utilization efficiency, and can well limit the shuttle body to prevent the shuttle body from deviating from a set track in the propelling process.

Specifically, each of the first electromagnets 110 may include a first protective cover 111 and a first excitation coil arranged around an outer circumference of the first protective cover 111, each of the first protective covers 111 defining one first travel passage 112. That is, during the process of pushing the shuttle, the shuttle collides only with the first protective cover 111 (in the case that the process of traveling the shuttle is unstable, the shuttle slightly collides with the first protective cover 111), so that the first field coil is well protected, and the first field coil is prevented from colliding with the shuttle and being damaged. Therefore, the structure of the first protection cover 111 can prolong the service life of the first electromagnet 110, and when the first protection cover 111 is damaged, only the first protection cover 111 needs to be replaced, so that the maintenance cost is reduced.

The first driving device 100 is only used for driving the shuttle body in a single direction, and in the actual production process, the shuttle body needs to reciprocate in a travel stroke. In one embodiment, in order to realize the reciprocating motion of the shuttle, the first driving device 100 may be located at one end of the travel stroke of the shuttle, and an elastic resilient member is disposed at the other end of the travel stroke of the shuttle, so that when the shuttle moves to the other end of the travel stroke (the end departing from the first driving device 100) along the travel direction, the shuttle is returned to the first driving device 100 by the original way, thereby realizing the reciprocating motion of the shuttle.

In one embodiment, in order to achieve the reciprocating motion of the shuttle, the shuttle driving assembly may further include a second driving device 200, and the second driving device 200 is disposed at both sides of the travel stroke of the shuttle opposite to the first driving device 100. Likewise, the second driving device 200 includes at least two second electromagnets arranged in a row in a direction in which the second driving device 200 is directed to the first driving device 100, and the magnetic field intensity generated by each second electromagnet is gradually increased in a direction in which the second driving device 200 is directed to the first driving device 100, wherein each second electromagnet is used to drive the shuttle in a direction in which the second driving device 200 is directed to the first driving device 100. Namely, both ends of the advancing stroke of the shuttle body are provided with a driving device for magnetically propelling the shuttle body.

Like the first electromagnet 110, each of the second electromagnets may also have a ring shape, and the center of each of the second electromagnets defines a second travel passage for the shuttle to pass through, the axes of each of the second travel passages coincide, and the axis of each of the second travel passages coincides with the axis of each of the first travel passages 112.

In order to protect the second electromagnets well, each of the second electromagnets includes a second protective sheath each defining a second travel passage, and a second excitation coil disposed around an outer periphery of the second protective sheath.

Since the first driving device 100 and the second driving device 200 are respectively disposed at both ends of the travel stroke of the shuttle, the shuttle is not subjected to a driving force between the first driving device 100 and the second driving device 200, and in order to make the shuttle move smoothly between the first driving device 100 and the second driving device 200, in one embodiment, a guide rail may be disposed between the first driving device 100 and the second driving device 200. After the first driving device 100 pushes out the shuttle, the shuttle moves on the guide rail. However, the arrangement of the guide rails affects the weaving between warp and weft yarns. In order to maintain the smooth movement of the shuttle body without affecting the weaving of the warp and weft. In one embodiment, the shuttle driving assembly further comprises a magnetic guide disposed between the first driving device 100 and the second driving device 200, and the magnetic guide is configured to generate a magnetic force repelling the shuttle. The magnetic guide rail does not need to be in direct contact with the shuttle body, so that the magnetic guide rail can avoid the yarns, and the weaving action between the warp yarns and the weft yarns is not influenced.

In particular, the magnetic guide rail may comprise a permanent magnet, but also an electromagnet. And whether the magnetic force guide rail is a permanent magnet or an electromagnet, the magnetic direction of the magnetic force guide rail is opposite to that of the magnetic force guide rail, so that the magnetic force guide rail and the magnetic force guide rail can generate mutual repulsive force, and the shuttle body can be in a suspended state when running between the first driving device 100 and the second driving device 200.

The first and second driving devices 100 and 200 can not only drive the shuttle but also capture the shuttle. For example, when the shuttle is moved from the first driving device 100 to the second driving device 200 (i.e., when the shuttle is moved in the traveling direction), the shuttle has a certain kinetic energy, and in order to be able to consume the kinetic energy of the shuttle and change the moving direction of the shuttle, the second electromagnet in the second driving device 200 needs to generate a magnetic force opposite to the moving direction of the shuttle, and when the shuttle is subjected to a magnetic force directed to the direction of the first driving device 100 by the second driving device 200, it has an acceleration in the opposite direction to the traveling direction, thereby implementing the retracing motion.

However, the moving process of the shuttle is not stable enough, and when the shuttle moves to the second driving device 200, if the process of generating the magnetic force by the second driving device 200 is delayed slightly, the force-bearing time of the shuttle is shortened, and it is very likely that the kinetic energy of the shuttle is not completely consumed after the shuttle passes through all the second electromagnets, and at this time, the shuttle passes through the second electromagnets and is separated from the travel stroke.

In order to solve the above problem, in an embodiment, the first driving device 100 may further include a first bracket 120, the first bracket 120 is provided with a number of first elastic members (not shown in the figure) equal to the number of the first electromagnets 110, each of the first electromagnets 110 is connected to each of the first elastic members in a one-to-one correspondence, and each of the first elastic members gives an elastic thrust to the first electromagnet 110 connected thereto toward the second driving device 200 when each of the first electromagnets 110 generates a displacement in a direction in which the second driving device 200 points to the first driving device 100. The first elastic element may be a spring or a spring plate.

That is, in the process of capturing the shuttle body by the first driving device 100 (i.e., in the process of consuming the kinetic energy of the shuttle body), the reaction force given by the shuttle body to each first electromagnet 110 can make each first electromagnet 110 perform a small displacement towards the moving direction of the shuttle body, and the displacement process can prolong the thrust acting time of each first electromagnet 110 on the shuttle body, thereby increasing the impulse generated by each first electromagnet 110 on the shuttle body, so that the kinetic energy of the shuttle body can be better consumed, the shuttle body can be more easily captured to perform the retracing motion, the stability of the system is effectively enhanced, and the shuttle body is prevented from deviating from the traveling stroke. And, since each first electromagnet 110 moves in the direction opposite to the moving direction of the shuttle, each corresponding first elastic member is compressed, so that when there is no interaction force between the shuttle and the corresponding first electromagnet 110, the first elastic member may rebound the corresponding first electromagnet 110 to the initial position.

Similarly, the second driving device 200 may also include a second bracket, on which second elastic members are disposed, the number of the second elastic members being the same as that of the second electromagnets, each of the second electromagnets is connected to each of the second elastic members in a one-to-one correspondence, and each of the second elastic members gives an elastic thrust to the second driving device 200 to the second electromagnet connected thereto when the second electromagnet generates a displacement along a direction in which the second driving device 200 points to the second driving device 200. The second elastic element may be a spring or a spring plate.

That is to say, in the process of capturing the shuttle body by the second driving device 200 (i.e. in the process of consuming the kinetic energy of the shuttle body), the reaction force given by the shuttle body to each second electromagnet can make each second electromagnet perform a small displacement towards the moving direction of the shuttle body, and this displacement process prolongs the thrust action time of each second electromagnet on the shuttle body, thereby increasing the impulse generated by each second electromagnet on the shuttle body, so that the kinetic energy of the shuttle body can be better consumed, so that the shuttle body is more easily captured to perform the retracing motion, effectively enhancing the stability of the system, and preventing the shuttle body from departing from the traveling stroke. And, since each second electromagnet moves in the direction opposite to the moving direction of the shuttle body, each corresponding second elastic member is compressed, so that when there is no interaction force between the shuttle body and the corresponding second electromagnet, the second elastic member may bounce the corresponding second electromagnet back to the initial position.

Referring to fig. 4 to 6, the present application further provides a magnetic levitation track assembly 400 for a textile machine, the magnetic levitation track assembly 400 comprising a track carrier 410, a core assembly 440 and a plurality of electromagnetic coil sets 430. The track carrier 410 is elongated. Specifically, the track carrier 410 may be a plate member, and may also be a combination of a plurality of rod-shaped members arranged in parallel. The rail carrier 410 may be a metal, wood, or plastic member, etc.

The core assembly 440 is disposed on the rail carrier 410, the core assembly 440 includes a plurality of core units 441, the core units 441 may be made of low-carbon steel, and the core units 441 are arranged at intervals along a length direction of the rail carrier 410. Each of the individual cores 441 in the core assembly 440 may be disposed on the same side of the track carrier 410, or a portion of the individual cores may be disposed on one side of the track carrier 410, and another portion of the individual cores may be disposed on the other side of the track carrier 410. How the specific arrangement position thereof is determined as the case may be.

In the plurality of solenoid coil groups 430, each solenoid coil group 430 is arranged along the length direction of the track carrier 410, each solenoid coil group 430 comprises three solenoid coils 431, and the three solenoid coils 431 are connected with a three-phase circuit. In the same electromagnetic coil group 430, each electromagnetic coil 431 is arranged around at least one iron core unit 441, and the electromagnetic coils 431 are arranged in a row along the length direction of the track carrier 410, and each electromagnetic coil group 430 is used for generating a travelling magnetic field to drive the magnetic shuttle 500 to move along the length direction of the track carrier 410. Likewise, each solenoid 431 of the solenoid group 430 may be disposed on the same side or different sides of the track carrier 410.

The magnetic levitation track assembly 400 is used for driving the shuttle 500 to move, so that the shuttle 500 drives the weft yarns to move, and therefore the warp yarns and the weft yarns are woven. Specifically, the driving assembly in this application drives the shuttle 500 by using magnetic force, that is, when the shuttle 500 itself has magnetism, each electromagnetic coil set 430 is connected to three circuits to generate a traveling magnetic field, and the traveling magnetic field is used to push the shuttle 500 to move. Because the shuttle body 500 is in a suspended state in the motion process, the pushing process of the shuttle body 500 does not generate noise, and meanwhile, the function mode is very simple and is more energy-saving and environment-friendly. Compared with the structure of driving the shuttle 500 by the shuttle 500 driving assembly in the foregoing embodiment, the track assembly 400 in the present embodiment has the function of driving the shuttle 500, and can also precisely control the movement track of the shuttle 500 by controlling the travelling magnetic field.

Specifically, in the same electromagnetic coil group 430, two adjacent electromagnetic coils 431 each surround at least one core single body 441. In the present embodiment, in the same electromagnetic coil group 430, each electromagnetic coil 431 is disposed around the adjacent three core single bodies 441. And two adjacent electromagnetic coils 431 all surround the two iron core single bodies 441 together.

Wherein, the solenoids 431 with the same phase in each solenoid group 430 are all connected in series, or the solenoids 431 with the same phase in each solenoid group 430 are all connected in parallel.

When all the electromagnetic coils 431 in the electromagnetic coil group 430 and all the iron core single bodies 441 in the iron core group are disposed on the same side of the rail carrier 410, the side of the rail carrier 410 on which the electromagnetic coil group is disposed is used to set the shuttle 500.

In one embodiment, each electromagnetic coil group 430 may be connected to the rail carrier 410, and in another embodiment, each electromagnetic coil group 430 is connected to the core assembly 440, that is, each electromagnetic coil 431 in each electromagnetic coil group 430 is wound around each core unit 441, which is not in contact with the rail carrier 410.

In one embodiment, as shown in fig. 11, to further prevent the shuttle 500 from being separated from the rail during operation, the rail assembly 400 may include two sets of core assemblies 440, both the core assemblies 440 are connected to the rail carrier 410, and the two core assemblies 440 are arranged side by side along the length of the rail carrier 410. Specifically, the two core assemblies 440 are arranged at intervals, and the core units 441 in the two core assemblies 440 are arranged in a one-to-one correspondence. The two iron core single bodies 441 are arranged in a V shape, that is, the two iron core assemblies 440 jointly define a rail groove with a V-shaped section. The shuttle 500 moves above the V-shaped track groove. The two iron core assemblies 440 are arranged as described above, so that the shuttle 500 receives two repulsive forces transmitted in two crossing directions from below at the same time, the two crossing repulsive forces have component forces in the horizontal direction, and the component forces in the horizontal direction can prevent the shuttle 500 from being separated from the rail in the horizontal direction perpendicular to the length direction of the V-shaped groove, thereby improving the stability of the system.

The traveling wave magnetic field generated in the track assembly 400 was analyzed for magnetic field as follows:

and setting a three-phase traveling wave magnetic field of the current-carrying coil to be 50Hz, neglecting the displacement current, and deducing a control equation of the model through a Maxwell equation set. In a two-dimensional space, magnetic field intensity components Hx, Hy and J are set as current density along the z-axis direction, E is electric field intensity, rho is resistivity of a magnet exciting coil material, and ampere loop law and Faraday electromagnetic induction law in a magnetic field are set as follows:

magnetic field form of gauss's law:

the coupling weft insertion system is mainly acted by coupling driving force, damping friction force, inertia force and other interference force. Some acting forces have definite mathematical expressions, and the acting forces can be presented in the dynamic equations of the feeding system, such as inertia force, electromagnetic thrust force, viscous friction force and the like; some disturbing forces can be obviously reduced after structure optimization, an approximate formula is obtained by adopting finite element calculation and data fitting, online compensation can be carried out, and the influence of the disturbing forces on the moving performance, such as the thrust caused by the side end force of the shuttle body 500, the cogging effect, the friction force caused by the normal suction force and the like, can be eliminated; while other disturbance forces have the characteristics of nonlinearity and time variability, cannot be expressed by definite mathematical expressions, and can only be attenuated by means of online identification estimation or low-pass filters.

The numerical simulation of the traveling wave magnetic field distribution is performed by ANSYS software. The method comprises the following steps: a 2-D static magnetic field (a magnetic field generated by a direct current or a permanent magnet), a 2-D harmonic response magnetic field (an alternating magnetic field generated by an alternating current or an alternating voltage), a 2-D transient magnetic field (a magnetic field generated by a current or an external field that varies arbitrarily with time), a 3-D static magnetic field (a magnetic field generated by a direct current or a permanent magnet), a 3-D harmonic response magnetic field (a magnetic field generated by an alternating current), and a 3-D transient magnetic field (a magnetic field generated by a current or an external field that varies arbitrarily with time).

The method mainly analyzes the 2-D harmonic response magnetic field generated when alternating current is introduced into the sensor coil, reasonably describes the distribution of the magnetic field space through finite element analysis and calculation of the magnetic field space, compares the calculation result of the magnetic induction intensity with an actual measurement value, proves the reliability of simulation, and makes the following assumptions for the requirement of simulation:

1. neglecting the influence of the end windings on the magnetic field distribution, the copper conductor extends infinitely in the slot direction and the magnetic field distribution is considered uniform in the along-slot direction.

2. The copper wire is simplified into a conductive region having the same conductive area.

3. The low carbon steel gullets used in the electromagnetic inductor are isotropic in permeability under the calculated conditions.

4. Each current flows only in the direction of the slots and varies sinusoidally.

Adopting ANSYS software to carry out modeling and finite element subdivision on the 2-D travelling wave magnetic field electromagnetic inductor: the modeling of structures such as an electromagnetic induction coil, a low-carbon steel tooth space, an air (near field region) electromagnetic calculation region and the like, and the finite element subdivision of the corresponding material calculation region of each part.

After the traveling wave magnetic field configuration, a finite element subdivision unit is defined, and a proper electromagnetic field unit is selected, so that the boundary condition can be determined and loaded, and a more accurate solution can be obtained. Examples of the 2D solid units in the near-field region by the two-dimensional electromagnetic field vector method include Plane13 and Plane 53. Generally, when a static magnetic field generated by introducing direct current into a coil is analyzed, a quadrilateral Plane13 unit with four nodes is adopted, and the unit coordinate is parallel to the integral Plane coordinate; and when a harmonic response magnetic field generated by passing an alternating current through the coil is analyzed, a Plane53 cell is adopted, and the cell can define a real constant (defining the area, the number of turns, the direction of passing the current, the filling coefficient of the coil and the like). The magnetic field analysis performed by the application belongs to harmonic response magnetic field analysis, neglects the influence of a far field region and adopts a Plane53 unit type. Table 1 shows the track material parameters, and table 2 shows the electromagnetic weft insertion system design parameters.

TABLE 1 weft insertion track Material parameters

TABLE 2 electromagnetic weft insertion track design parameters

The modeling and finite element subdivision of the 2-D travelling wave magnetic field electromagnetic inductor are carried out by adopting ANSYS software: the modeling of the electromagnetic induction coil (i.e., the electromagnetic coil 431), the low-carbon steel tooth space (i.e., the gap of the iron core single body 441), the air (near field region), the electromagnetic calculation domain and the like, and the finite element subdivision of the corresponding material calculation domain of each part are shown in fig. 7.

Each turn of the excitation coil is provided with three-phase symmetrical alternating current with the amplitude of 100A and 50Hz, the electromagnetic distribution in the coil and around the coil is basically stable at the beginning of the second time period, the unsmooth distribution of the current and the magnetic field in the insulating layer can be improved by increasing the number of the insulating layers, but the geometric modeling and calculation time can be increased.

And obtaining the basic distribution rule of the magnetic field according to an ANSYS calculation chart of the travelling wave magnetic field. Fig. 8 shows that the magnetic induction intensity has a decreasing trend with increasing height, the distribution of the magnetic flux, the magnitude and the distribution of the magnetic induction intensity have obvious changes with the time, and the magnetic flux distribution and the magnetic induction intensity distribution have two peaks in the moving direction of the traveling wave magnetic field and approximately correspond to the respective pole pitch centers. At a place far away from the iron core, the magnetic induction intensity is distributed uniformly, and when the magnetic induction intensity reaches a certain distance, the magnetic induction intensity reaches a certain value.

The model adopts harmonic response analysis, the distribution result of the magnetic field under the action of a specified frequency in a specific time is obtained through calculation, and in order to approximately calculate the magnetic field distribution change condition in the traveling wave magnetic field propagation process, the phase angles of 0, 60, 120, 180, 240 and 300 are respectively taken when the coil is electrified with current of 100A to obtain magnetic lines, a magnetic induction intensity vector distribution diagram and a magnetic field intensity vector distribution diagram.

In fig. 9, the magnetic induction distribution diagram of the traveling wave magnetic field is shown when the current phase angles (a), (b), (c), (d), (e), and (f) are 0, 60, 120, 180, 240, and 300, respectively, the frequency is 50HZ, and the ampere-turn number of the applied current is 100A. In fig. 10, the traveling wave magnetic field lines of the current passing through the primary winding have current passing angles of 0, 60, 120, 180, 240 and 300, respectively.

From the above traveling wave magnetic field propagation approximation profile:

1. the overall law of magnetic field distribution is basically unchanged in the propagation process, the propagation of the magnetic field is continuously changed from left to right, and the wave crest moves from left to right and then from right to left.

2. The distribution of the areas with higher magnetic induction intensity has a certain change rule, and the areas with higher magnetic induction intensity are distributed above the groove, above the tooth, above the groove and above the tooth at intervals, and become the areas above the groove, above the groove and the like along with the lapse of time, and then become the areas above the groove, above the tooth and above the groove, which are distributed alternately.

3. The magnetic field strength, a relatively large area of magnetic induction, is always at the junction of the tooth and the groove.

From the above analysis, the present application concludes:

(1) when the magnetic induction intensity is closer to the surface of the iron core, the uniformity of magnetic field distribution is poorer, the magnetic induction intensity on the tooth socket is higher than that on the slot generally, along with the increase of the height of the air gap, the magnetic induction intensity is in a descending trend, the distribution becomes more uniform, but the magnetic field distortion is caused by the fact that the iron core is disconnected at the two ends, and the magnetic induction intensity is reduced quickly at the position. The distribution of the magnetic induction intensity along the x direction is changed periodically, and the closer to the surface of the inductor, the larger the change amplitude is, and on the contrary, the distribution is more uniform.

(2) The magnetic induction tends to decrease with increasing height.

(3) ANSYS software analysis shows that when the magnetic induction intensity is closer to the surface of the iron core, the uniformity of magnetic field distribution is poorer, the magnetic induction intensity on a common tooth is higher than that on a groove, the magnetic induction intensity is in a descending trend along with the increase of the height of an air gap, the distribution is more uniform, but the magnetic induction intensity and a winding arranged in the iron core are discontinuous at two ends due to the fact that the iron core is broken at the two ends, magnetic field distortion is caused, and the magnetic induction intensity is reduced rapidly at the position.

(4) The distribution of the magnetic induction intensity along the propagation direction is changed periodically, and the closer to the surface of the inductor, the larger the change amplitude is, and on the contrary, the distribution is more uniform. The magnetic induction tends to decrease with increasing height. The magnetic field strength, a relatively large area of magnetic induction, is always at the junction of the tooth and the groove.

The application also provides a textile machine, which comprises the shuttle body driving assembly and the shuttle body.

The application also provides a textile machine, which comprises the magnetic suspension track assembly in any one of the above embodiments and a shuttle body. Wherein the magnetic levitation track assembly comprises the shuttle body driving assembly of any of the previous embodiments. The shuttle body is driven by a magnetic levitation track assembly, and the shuttle body driving assembly is used for capturing the shuttle body and changing the direction of the shuttle body. Like this, the travelling wave magnetic field of magnetic suspension track subassembly is controlled more easily (it need not consume the kinetic energy of the shuttle through accurate change magnetic force direction), and the shuttle is difficult for breaking away from the track more, has promoted the stability of system.

The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.

The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.