WO2021047157A1

WO2021047157A1 - Variable magnetic reluctance magnetic levitation weft insertion apparatus

Info

Publication number: WO2021047157A1
Application number: PCT/CN2020/079202
Authority: WO
Inventors: 宋怡佳; 付振山; 刘志鹏; 杨斌
Original assignee: 宋怡佳
Priority date: 2019-09-11
Filing date: 2020-03-13
Publication date: 2021-03-18
Also published as: CN110485035A; CN110485035B

Abstract

A variable magnetic reluctance magnetic levitation weft insertion apparatus, comprising an electromagnetic assembly (1) and an electromagnetic controller (2); the electromagnetic assembly comprises electromagnetic iron coils (11), magnetically conductive columns (12), and a mover weft insertion piece (13); the electromagnetic iron coils (11) and the magnetically conductive columns (12) are arranged in a straight line and the number thereof matches, each electromagnetic iron coil (11) being composed of an inner iron core and a coil wound around the iron core; the top parts of the magnetically conductive columns (12) extend towards one another to form a horizontal magnetic levitation track; the mover weft insertion piece (13) is composed of a wear-resistant shell (13a) and a mover iron piece (13b) embedded in the wear-resistant shell (13a); and the electromagnetic iron coils (11) are clamped in the middle of the magnetically conductive columns (12), the two ends of the iron core of the electromagnetic iron coil (11) being connected to the magnetically conductive column (12) in an integrally formed structure or in close contact without an air gap. The weft insertion piece is driven to move back and forth by means of changes to the magnetic reluctance. The mover weft insertion piece (13) can be designed as a weft feeder or a weft picker according to requirements, forming the handover of weft feeding and weft picking in the middle of the loom.

Description

Variable magnetic resistance magnetic levitation weft insertion device

Technical field

The invention relates to a weft insertion device of a loom, in particular to a magnetic levitation weft insertion device of a loom, belonging to the technical field of textile machinery.

Background technique

At present, the looms on the market can be divided into two categories: shuttle looms and shuttleless looms according to different weft insertion methods. Shuttle looms are looms that use traditional shuttles (wood shuttles or plastic shuttles) for weft insertion; shuttleless looms have a variety of weft insertion methods, including rapiers, jets (air jets, water jets), and flakes. Shuttle, multiple shed (multiphase) and weaving. Shuttle looms are often projected repeatedly because of their large shuttles and heavy weights. This causes a series of problems such as high vibration, high noise, slow speed, and low efficiency of the loom. However, the weft insertion methods of the shuttleless loom have their own drawbacks and have their own types of weaving that cannot be applied. Especially in terms of the width of the door width, most of the weft insertion pieces of shuttleless looms have a tendency to move from strong to weak during the weft insertion process. Therefore, there is a certain limit weaving width, which cannot meet the requirements of larger weaving. The width of the demand.

In view of the above, providing a weft insertion device that can improve the weaving capacity of the fabric width will broaden the design ideas of fabric designers and further meet the market's demand for wide fabrics.

technical problem

The present invention aims to provide a variable reluctance magnetic levitation weft insertion device, which uses the principle that the magnetic resistance of the electromagnet changes and the armature moves in the direction of minimum reluctance to realize that the weft inserter is driven by electromagnetic power and passes through the structure of the entire device Optimized to keep the electromagnetic power driving the weft insertion device continuously constant, thereby realizing the weft insertion process of the loom.

Technical solutions

In order to solve the above-mentioned problems, the technical solution adopted by the present invention is:

A variable reluctance magnetic levitation weft insertion device is special in that it has an electromagnetic component and an electromagnetic controller for controlling the power on and off of the electromagnetic component; wherein,

The electromagnetic assembly includes an electromagnet coil electrically connected to an electromagnetic controller, a magnetic permeable column for conducting magnetism, and a mover weft insertion piece erected and installed on the top of the magnetic permeable column;

There are several electromagnet coils arranged in a straight line, and each electromagnet coil is composed of an inner iron core and a coil wound around the outer circumference of the iron core;

The number of the magnetic permeable pillars matches the number of electromagnet coils, and they are also arranged in a straight line. Each magnetic permeable pillar has a pair of pillars arranged opposite to each other, and the tops of the two pillars extend toward each other to form a horizontal magnetic levitation track;

The mover weft insertion piece is composed of a wear-resistant shell and a mover iron piece embedded on the wear-resistant shell;

The electromagnet coil is sandwiched in the middle of the magnetic permeable column, and the two ends of the iron core of the electromagnet coil and the permeable column are integrally formed or connected in close contact without an air gap.

The mover iron piece of the mover weft insertion piece has a contour shape with an air gap gradually changing from large to small formed between the end of the column forming the magnetic levitation track. Generally, the contour shape is most effective in an arc shape or a diagonal shape. The mover iron piece with a contour shape drives the whole mover weft insertion piece to travel in a predetermined direction by virtue of the gradual air gap formed between itself and the end of the column.

The magnetic levitation track is a chute formed on the top of the two columns facing each other, and includes a first chute for accommodating the weft insertion piece of the mover and a second chute for accommodating the weft insertion piece of the mover on the other side, The first sliding groove and the second sliding groove are relatively constructed into a horizontal magnetic levitation track on the top of the electromagnet coil.

The wear-resistant shell of the mover weft insertion piece adopts light-weight wear-resistant material;

The mover iron piece and the magnetic permeable column of the mover weft insertion piece are made of materials with high permeability, high magnetic flux density, low coercivity, and low loss like amorphous metal materials.

The outer shell of the mover weft insertion piece adopts a strip-shaped sheet structure, and the installation position and the installation quantity of the mover iron piece on the outer shell are matched according to actual requirements.

Further, the mover iron piece of the mover weft insertion piece has a hollow part, and the hollow part is used to reduce the dead weight of the whole mover weft insertion piece to increase its moving speed.

Further, the weft insertion device further includes a base, and the electromagnet coil and the magnetic conductive column are both fixedly installed on the base.

The number of the electromagnet coils and the magnetically conductive pillars can be set according to the width of the fabric door.

The electromagnetic controller is electrically connected to the corresponding electromagnet coils through a plurality of wires. The energization control mode of the electromagnetic controller for different electromagnet coils should be combined with the number of electromagnet coils and the mover iron in the mover weft insertion piece. The number and shape of the pieces are adjusted for specific adaptation.

Beneficial effect

The variable magnetic resistance magnetic levitation weft insertion device of the present invention uses the principle that the magnetic resistance of the electromagnet changes and the armature moves in the direction of the minimum magnetic resistance, and realizes the control of the mover weft insertion piece by controlling the on and off of the electromagnet at different positions Move forward or backward to realize the weft insertion process of the loom; at the same time, the gravity of the weft insertion piece is overcome by the electromagnet attraction, which reduces the friction resistance of the weft insertion piece movement, reduces the wear of the weft insertion piece, and improves the life of the weft insertion piece. , And reduce the energy consumption in the process of weft insertion. The mover weft insertion piece of the present invention cooperates with the electromagnetic coil and the magnetically conductive column, combined with the control mode of the electromagnetic controller, can control the on and off of the electromagnet in an orderly manner, and form a magnetic resistance between the mover weft insertion piece and the magnetic levitation track Change, the acceleration and deceleration movement of the weft insertion piece is driven by this change in magnetic resistance, and then the back and forth movement of the weft insertion piece is controlled. The mover weft insertion piece can be designed as a weft feeder and a weft receiver according to the needs, forming the transfer of the weft feed and the weft in the middle of the loom.

Description of the drawings

Figure 1: A schematic diagram of the overall structure of a variable reluctance magnetic levitation weft insertion device;

Figure 2: Schematic diagram of one side of the magnetically permeable column;

Figure 3: A schematic diagram of the structure of the mover weft insertion piece in the first embodiment;

Figure 4: Schematic diagram of the structure of the mover weft insertion piece of the third embodiment;

Figure 5: A schematic diagram of the structure of the mover weft insertion piece of the fourth embodiment;

Figure 6: A schematic diagram of the structure of the mover weft insertion piece of the fifth embodiment;

In the picture, 11, electromagnet coil, 12, magnetic permeable column, 12a, column, 12b, chute, 13, mover weft insertion piece, 13a, wear-resistant housing, 13b, mover iron piece, 13c, hollow Department, 2. Electromagnetic controller, 3. Base.

Embodiments of the present invention

Several specific structural implementations of the present invention are given below in conjunction with the accompanying drawings, so that those skilled in the art can further describe the structure, design principles, and operation process of the present invention in detail. It should be understood that the following examples are only relatively optimized implementations selected to fully illustrate the technical solutions of the present invention, and shall not be used as a limitation to the protection scope of the present invention.

Example one

A variable reluctance magnetic levitation weft insertion device. The main structure includes a base 3, an electromagnetic assembly 1 mounted on the base 3, and an electromagnetic controller 2 for controlling the electromagnetic assembly 1 to turn on and off. The electromagnetic assembly is composed of an electromagnet coil 11, a magnetic permeable column 12 and a mover weft insertion piece 13. The number of the electromagnet coil 11 and the magnetic permeable column 12 are matched and designed into 8 groups, which are arranged in a straight line on the base 3 , The mover weft inserting piece 13 is erected on the top of the electromagnet coil 11 through the magnetic permeable column 12. Each electromagnet coil 11 is composed of an inner iron core and a coil wound around the outer periphery of the iron core; each magnetic permeable pillar 12 is composed of a pair of oppositely arranged pillars 12a, and the magnetic permeable pillar 12 is made of amorphous metal material, The tops of the two uprights extend horizontally toward each other to form a magnetic levitation track for erecting the mover weft insertion piece 13. The electromagnet coil 11 is sandwiched between the two uprights 12a of the magnetic permeable pole 12. In this embodiment, the iron core of the electromagnet coil 11 and the permeable pole 12 are separate components. Both ends of the iron core are in close contact with the uprights 12a adjacent to each other without air gaps. The mover weft insertion piece 13 is composed of a wear-resistant housing 13a and mover iron pieces 13b embedded on the wear-resistant housing 13a. The wear-resistant housing 13a is made of lightweight wear-resistant materials, and the mover iron The sheet 13b uses an amorphous metal material. In the present embodiment, the housing 13a of the mover weft insertion piece 13 has a strip-shaped sheet structure as a whole. A mover iron piece 13b with an oval outer contour is installed in the middle of the housing 13a, and the middle of the mover iron piece 13b With a hollow part 13c, the mover iron piece 13b of this shape is installed on the magnetic levitation track, and the air gap transition formed between the end of the column constituting the magnetic levitation track is gradually changed, and the change of this gradual air gap can drive the entire mover The weft insertion piece travels in a predetermined direction. The magnetic levitation track is a sliding groove 12b formed on the top of the two uprights 12a opposite to each other. The first sliding groove and the second sliding groove are relatively constructed as a horizontal magnetic levitation track on the top of the electromagnet coil. The magnetically conductive pillars are made of amorphous metal materials. In this embodiment, the electromagnetic controller 2 is respectively connected to the eight electromagnet coils 11 through eight wires. The control scheme adopts to sequentially energize the eight electromagnet coils, and the mover weft insertion piece 13 changes through magnetic resistance Travel forward or backward along the magnetic levitation track.

Example two

The difference between this embodiment and the first embodiment is that the shape of the mover iron piece 13b of the mover weft insertion piece 13 is a prismatic shape.

Example three

The difference between this embodiment and the first embodiment is that the wear-resistant housing 13a of the mover weft insertion piece 13 is evenly distributed with three mover iron pieces 13b, and the mover iron piece 13b has a six-sided shape. The mover iron piece 13b has transitional arcs or straight sections on both sides of the mover iron piece 13b, thereby forming a gradually changing air gap between the mover iron piece 13b and the end of the column to provide magnetic power. The energization mode of the electromagnetic controller 2 in this embodiment is that every three adjacent groups of electromagnet coils are sequentially energized in a staggered manner to satisfy the normal travel of the weft insertion piece of the mover.

Example four

The difference between this embodiment and the third embodiment is that the middle part of the mover iron sheet 13b has a hollow part 13c.

Example five

The difference between this embodiment and the first embodiment is that the wear-resistant shell 13a of the mover weft insertion piece 13 is uniformly distributed with 11 mover iron pieces 13b, and the shape of the mover iron piece 13b is peanut-shaped. .

Example Six

The difference between this embodiment and the first embodiment is that the iron core of the electromagnet coil 11 and the magnetic permeable column 12 are integrated.

Example Seven

The difference between this embodiment and the first embodiment is that a mover iron piece 13b is installed in the middle of the wear-resistant housing 13a of the mover weft insertion piece 13, and the mover iron piece 13b is prismatic in shape.

The variable magnetic resistance magnetic levitation weft insertion device of the above embodiments uses the principle that when the magnetic resistance of the electromagnet changes, the armature moves in the direction of the smallest magnetic resistance.

The structure and movement principle of the variable reluctance magnetic levitation weft insertion device of the present invention are introduced as follows:

The mover weft insertion piece 13 is used as a moving armature. The magnetic permeable column 12 and the electromagnet coil 11 form an electromagnet that can generate magnetism. The permeable column 12 and the electromagnet coil 11 are arranged at a certain distance, and the top structure of the magnetic permeable column 12 is formed The moving track of the weft insertion piece 13. When the mover weft insertion piece 13 needs to accelerate forward, the previous set of electromagnet coils 11 will be supplied with power at an appropriate position. When the electromagnet coils 11 are energized, the magnetic lines of force pass through one side of the magnetically conductive column 12a, the column 12a and the mover. The air gap between the iron pieces 13b reaches the mover weft insertion piece 13, and then passes through the air gap between the other side mover iron piece 13b and the magnetic permeable column 12a to reach the other column 12a, forming a magnetic circuit. The mover weft insertion piece 13 accelerates forward under the action of the front magnetic force. When the mover weft insertion piece 13 is required to decelerate the movement, the latter group of electromagnet coils 11 are supplied with power at an appropriate position, and the mover weft insertion piece 13 performs a deceleration movement under the action of the rear magnetic force. Using this movement principle, designing the number of sets of magnetic permeable columns 12 and electromagnet coils 11 corresponding to the width of the fabric, and designing the corresponding control circuit, can realize the required weft insertion device.

The magnetic levitation weft insertion device of the present invention has the following structural advantages:

1. The structure is simple and easy to install. The width of the loom weaving door width can be designed according to the needs.

2. Use magnetic force to overcome the gravity of the weft insertion piece, reduce the frictional resistance between the weft insertion piece and the track, reduce the energy consumption during the weft insertion process, and increase the service life of the weft insertion piece.

Claims

A variable reluctance magnetic levitation weft insertion device is characterized in that it has an electromagnetic component and an electromagnetic controller for controlling the power on and off of the electromagnetic component; wherein,

The electromagnetic component includes an electromagnet coil, a magnetically permeable column, and a mover weft inserting piece erected on the top of the magnetically permeable column;

There are several electromagnet coils arranged in a straight line, and each electromagnet coil is composed of an inner iron core and a coil wound around the outer circumference of the iron core;

The number of the magnetic permeable pillars matches the number of electromagnet coils, and they are also arranged in a straight line. Each magnetic permeable pillar has a pair of pillars arranged opposite to each other, and the tops of the two pillars extend toward each other to form a horizontal magnetic levitation track;

The mover weft insertion piece is composed of a wear-resistant shell and a mover iron piece embedded on the wear-resistant shell;

The electromagnet coil is sandwiched in the middle of the magnetic permeable column, and the two ends of the iron core of the electromagnet coil and the magnetic permeable column are integrally formed or connected in close contact without an air gap.
The variable reluctance magnetic levitation weft insertion device according to claim 1, characterized in that:

The mover iron piece of the mover weft insertion piece has a contour shape with an air gap gradually changing from large to small formed between the end of the column constituting the magnetic levitation track, and the contour shape adopts an arc shape or an oblique shape.
The variable reluctance magnetic levitation weft insertion device according to claim 1, characterized in that:

The magnetic levitation track is a chute formed on the top of the two columns facing each other, and includes a first chute for accommodating the weft insertion piece of the mover and a second chute for accommodating the weft insertion piece of the mover on the other side, The first sliding groove and the second sliding groove are relatively constructed into a horizontal magnetic levitation track on the top of the electromagnet coil.
The variable reluctance magnetic levitation weft insertion device according to claim 1, characterized in that:

The wear-resistant shell of the mover weft insertion piece is made of light-weight wear-resistant material.
The variable reluctance magnetic levitation weft insertion device according to claim 1, characterized in that:

The mover iron piece and the magnetic permeable column of the mover weft insertion piece are made of materials with high magnetic permeability, high magnetic flux density, low coercivity and low loss.
The variable reluctance magnetic levitation weft insertion device according to claim 1, characterized in that:

The outer shell of the mover weft insertion piece adopts a strip-shaped sheet structure, and the installation position and the installation quantity of the mover iron piece on the outer shell are matched according to actual requirements.
The variable reluctance magnetic levitation weft insertion device according to claim 1, characterized in that:

The mover iron piece of the mover weft insertion piece has a hollow part.
The variable reluctance magnetic levitation weft insertion device according to claim 1, characterized in that:

The electromagnet coil and the magnetic conductive column are fixedly installed on the base.
The variable reluctance magnetic levitation weft insertion device according to claim 1, characterized in that:

The number of the electromagnet coils and the magnetic conductive pillars is set according to the width of the fabric width.
The variable reluctance magnetic levitation weft insertion device according to claim 1, characterized in that:

The electromagnetic controller is electrically connected to the corresponding electromagnet coils through a plurality of wires. The energization control mode of the electromagnetic controller for different electromagnet coils should be combined with the number of electromagnet coils and the mover iron in the mover weft insertion piece. The number and shape of the pieces are adjusted for specific adaptation.