CN111254575B - Three-dimensional filter screen weaving process and three-dimensional filter screen fabric - Google Patents
Three-dimensional filter screen weaving process and three-dimensional filter screen fabric Download PDFInfo
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- CN111254575B CN111254575B CN201911424157.6A CN201911424157A CN111254575B CN 111254575 B CN111254575 B CN 111254575B CN 201911424157 A CN201911424157 A CN 201911424157A CN 111254575 B CN111254575 B CN 111254575B
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Abstract
The invention discloses a three-dimensional filter screen weaving process and a three-dimensional filter screen fabric, wherein the process is completed on a three-dimensional weaving machine, the three-dimensional weaving machine comprises yarn devices and weaving stations, the weaving stations are arranged into a matrix A with m rows and n columns, m multiplied by n weaving stations are provided in total, the matrix A is marked as S (i, j), i is 1,2, … m, j is 1,2, …, n, the yarn devices are movably arranged around the weaving stations, the weaving stations drive the yarn devices to rotate around the weaving stations while rotating around the axes of the weaving stations, and the weaving devices are controlled to regularly move to complete weaving. The filter screen fabric woven by the weaving process has high void ratio and good mechanical property, the size of the void can be changed by changing the process parameters during weaving, different weaving layers can be designed according to the weaving working condition, the interlaminar property is good, the filter screen fabric is an ideal filter material, one layer of the three-dimensional filter screen fabric is damaged, the remaining layer fabric still has complete fabric tissue, the influence on the integral property of the fabric is little, and the process is easy to realize continuous production.
Description
Technical Field
The invention belongs to the field of weaving processes, and particularly relates to a three-dimensional filter screen weaving process and a three-dimensional filter screen fabric.
Background
China is rapidly developing heavy industries (electricity, building materials, metallurgy, chemical engineering and the like) mainly based on resources and energy consumption, and is accompanied by the problem of environmental pollution. The bag type dust collector is a gram of fine particles below PM10, and is a high-efficiency dust collecting device. The filter bag material is a core component of the bag type dust collector, and the selection of the filter bag material which is suitable for the working condition and has excellent performance is a key factor for determining the success or failure of the design of the bag type dust collector.
Currently, filter bag materials that are more widely used include nonwoven filter materials, woven filter materials, and knitted filter materials. The proportion of the non-woven filter material in the filter industry is getting bigger and bigger because of high porosity, simple process, low cost and high production efficiency, but the non-woven filter material has loose structure and poor mechanical property and dimensional stability, which leads to short service cycle of the non-woven filter cloth and ensures the filter effect only by changing the filter bag frequently by manufacturers; the strength of the knitted filter material is high, but due to the coil structure of the knitted filter material, the dimensional stability of the knitted filter cloth is poor, and only the knitted raised filter cloth can be used for air filtration; the woven filter material has the biggest characteristics of good mechanical property and good dimensional stability, but the porosity of the woven filter material can only be maintained at 30% -40%, the woven filter material is about 1/2% of a non-woven filter material, and the filter resistance is large.
The present invention has been made in view of this situation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a three-dimensional filter screen weaving process and a three-dimensional filter screen fabric.
The three-dimensional filter screen weaving process is completed on a three-dimensional weaving machine, the three-dimensional weaving machine comprises yarn devices and weaving stations, the weaving stations are arranged into a matrix A with m rows and n columns, m multiplied by n weaving stations are provided, the matrix A is marked as S (i, j), i is 1,2, … m, j is 1,2, …, n, the yarn devices are movably arranged around the weaving stations, the weaving stations drive the yarn devices to rotate around the weaving stations while rotating around the axes of the yarn devices, and the weaving is completed by controlling the regular movement of the weaving devices, and the process comprises the following steps:
step (1): arranging m multiplied by n yarn feeders in a weaving station matrix A according to rows and columns;
step (2): rotating weaving stations in odd rows and odd columns in the weaving station matrix A to drive yarn devices on two sides of the weaving stations to rotate t multiplied by 360 degrees, wherein t is a positive integer;
and (3): rotating weaving stations in even rows and even columns in the weaving station matrix A to drive yarn devices on two sides of the weaving stations to rotate t multiplied by 360 degrees, wherein t is a positive integer;
and (4): rotating weaving stations in odd rows and even columns in the weaving station matrix A to drive yarn devices on two sides of the weaving stations to rotate t multiplied by 360 degrees, wherein t is a positive integer;
and (5): rotating weaving stations in even rows and odd columns in a weaving station matrix A to drive yarn devices on two sides of the weaving stations to rotate t multiplied by 360 degrees, wherein t is a positive integer;
and (6): the arrangement of the yarn devices is unchanged, and the positions of the yarn devices on the weaving station are changed;
and (7): rotating all weaving stations in odd rows in the weaving station matrix A to drive yarn devices on two sides of the weaving stations to rotate t multiplied by 360 degrees, wherein t is a positive integer;
and (8): rotating all weaving stations in an even number of rows in the weaving station matrix A to drive yarn devices on two sides of the weaving stations to rotate t multiplied by 360 degrees, wherein t is a positive integer;
and (9): the arrangement of the yarn device is unchanged, the position of the yarn device on the weaving station is changed, the yarn device returns to the initial arrangement position, and the weaving of the minimum unit of the three-dimensional weaving filter screen is finished at the moment;
and (5) circulating the steps (2) to (9) to obtain the three-dimensional woven filter screen fabric, wherein the positions of any two steps of the step (2), the step (3), the step (4) and the step (5) can be exchanged, and the positions of the step (7) and the step (8) can be exchanged.
Further, after the step (5) is finished, repeating the steps (2) to (5) for k times, wherein k is a non-negative integer.
Further, in the steps (2) to (8), the rotation is clockwise or counterclockwise rotation of the yarn machine around the knitting station.
The invention also aims to provide the three-dimensional filter screen fabric woven by the process.
After adopting the technical scheme, compared with the prior art, the invention has the following beneficial effects:
1. the weaving stations of odd rows and odd columns, even rows and even columns, odd rows and even columns and even rows and odd columns rotate to drive the yarn devices on two sides of the weaving stations to rotate tx360 degrees, t is a positive integer, so that the weaving process of the filter screen is greatly simplified, the process is easy to realize continuous production, and the woven three-dimensional filter screen fabric has better performance.
2. The filter screen fabric woven by the weaving process has high void ratio and good mechanical property, the size of the void can be changed by changing the technological parameters during weaving, different weaving layers can be designed according to the weaving working condition, the interlaminar property is good, the filter screen fabric is an ideal filter material, one layer of the three-dimensional filter screen fabric is damaged, the remaining layer fabric still has complete fabric tissue, and the influence on the integral property of the fabric is little.
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without limiting the invention to the right. It is obvious that the drawings in the following description are only some embodiments, and that for a person skilled in the art, other drawings can be derived from them without inventive effort. In the drawings:
3x4 initial yarn device positions in example 1 of FIG. 1;
the arrangement of the embodiment 1 in FIG. 2 after the position of the yarn guide is changed by 3x 4;
fig. 3 example 2 shows an initial position arrangement of 4x5 yarn feeders;
the arrangement of embodiment 2 of fig. 4 after changing the position of the yarn guide at 4x 5;
fig. 5 example 3x8 initial yarn device position arrangements;
the arrangement of embodiment 3x8 in fig. 6 after changing the position of the yarn guide;
FIG. 7 is a schematic view of a single layer filter web fabric structure
Wherein, 1, a weaving station; 2. a yarn winder; 3. a yarn.
It should be noted that the drawings and the description are not intended to limit the scope of the inventive concept in any way, but to illustrate it by a person skilled in the art with reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and the following embodiments are used for illustrating the present invention and are not intended to limit the scope of the present invention.
In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "contacting," and "communicating" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The first embodiment is as follows:
let the weaving station 1 matrix a be 3 rows and 4 columns, and have 3 × 4 weaving stations 1, denoted as S (i, j), where i is 1,2, 3, j is 1,2, 3, 4, and the other parameters take the following values, t is 1, and k is 0.
The weaving process comprises the following steps:
step 1): as shown in fig. 1, 3x4 yarn feeders 2 are arranged in a matrix a of the knitting station 1 in rows and columns in the east and west (i.e., left and right) directions of the knitting station 1 at row and column intervals;
step 2): odd rows and odd columns of weaving stations 1, namely S (1, 1), S (1, 2), S (1, 3), S (1, 4), S (3, 1), S (3, 2), S (3, 3), S (3, 4), S (2, 1) and S (2, 3) in a matrix A of the weaving stations 1 are rotated to drive yarn devices 2 on the left side and the right side of the weaving stations 1 to rotate 360 degrees clockwise.
Step 3): weaving stations 1 of even rows and even columns, namely S (2, 1), S (2, 2), S (2, 3), S (2, 4), S (1, 2), S (2, 2), S (3, 2), S (1, 4), S (2, 4) and S (3, 4), in a matrix A of the weaving stations 1 are rotated to drive yarn devices 2 on the left side and the right side of the weaving stations 1 to rotate clockwise by 360 degrees.
Step 4): weaving stations 1 in odd rows and even columns, namely S (1, 1), S (1, 2), S (1, 3), S (1, 4), S (3, 1), S (3, 2), S (3, 3), S (3, 4), S (1, 2), S (2, 2), S (3, 2), S (1, 4), S (2, 4) and S (2, 4) in a matrix A of the weaving stations 1 are rotated to drive yarn devices 2 on the left side and the right side of the weaving stations 1 to rotate clockwise by 360 degrees.
Step 5): the weaving stations 1 in odd-numbered rows and even-numbered columns, namely S (2, 1), S (2, 2), S (2, 3), S (2, 4), S (1, 1), S (3, 1), S (1, 3) and S (3, 3), in the matrix A of the weaving stations 1 are rotated to drive the yarn devices 2 on the left side and the right side of the weaving stations 1 to rotate 360 degrees clockwise/anticlockwise.
Step 6): as shown in fig. 2, the yarn feeder 23x4 is arranged unchanged, and the position of the yarn feeder 2 on the weaving station 1 is changed, i.e. the yarn feeder 2 is located on the north and south (i.e. upper and lower) sides of the weaving station 1.
Step 7): all weaving stations 1 in odd rows of the matrix a of weaving stations 1, namely S (1, 1), S (1, 2), S (1, 3), S (1, 4), S (3, 1), S (3, 2), S (3, 3) and S (3, 4), are rotated to drive the yarn machines 2 on the upper and lower sides of the weaving stations 1 to rotate 360 degrees clockwise.
Step 8): all weaving stations 1 of even rows in the matrix A of the weaving station 1, namely S (2, 1), S (2, 2), S (2, 3) and S (2, 4), are rotated to drive the yarn devices 2 on the upper side and the lower side of the weaving station 1 to rotate 360 degrees clockwise.
Step 9): the yarn feeder 23x4 is arranged unchanged, the position of the yarn feeder 2 on the knitting station 1 is changed, and the yarn feeder 2 returns to the initial arrangement position, at which the knitting of the minimum unit of the three-dimensional knitted filter net is completed.
And (5) circulating the steps from 2 to 9 to obtain the three-dimensional woven filter screen fabric. Above-mentioned preparation process flow is simple, and efficient, be fit for serialization production, the filter screen mechanical properties who obtains of weaving is good, it is not fragile, can greatly satisfy user's demand, simultaneously, yarn ware 2 is optional in the position around weaving station 1, specifically include east, south, west, north (be about, down, left and right), southeast, southwest, northeast, position such as northwest, the user can establish the initial position of yarn ware 2 in the east of weaving station 1, south, west, north, southeast, southwest, northeast, arbitrary position of northwest, and arrange according to the law, obtain the filter screen fabric of different structures.
Example two:
assuming that the matrix a of knitting stations 1 has 4 rows and 5 columns and there are 4x5 knitting stations 1, as shown in fig. 3, S (i, j), i is 1,2, … 4, j is 1,2, …, 5, the corresponding nest matrix B is N (i, j), i is 1,2, …, 4, j is 1,2, …, 5, and the other parameters have the following values of t is 2 and k is 1.
The weaving process comprises the following steps:
step 1): in the matrix a of the weaving station 1, 4x5 yarn devices 2 are arranged at intervals in rows and columns in the east and west directions of the weaving station 1;
step 2): odd rows and odd columns of the weaving station 1 matrix A, namely S (1, 1), S (1, 2), S (1, 3), S (1, 4), S (1, 5), S (3, 1), S (3, 2), S (3, 3), S (3, 4), S (3, 5), S (2, 1), S (4, 1), S (2, 3), S (4, 3), S (2, 5), S (4, 5) and S (4, 5) are rotated, and the yarn device 2 in east and west of the weaving station 1 is driven to rotate 2x360 degrees clockwise/anticlockwise.
Step 3): the weaving stations 1 of even rows and even columns, namely S (2, 1), S (2, 2), S (2, 3), S (2, 4), S (2, 5), S (4, 1), S (4, 2), S (4, 3), S (4, 4), S (4, 5), S (1, 2), S (3, 2), S (1, 4) and S (3, 4) in the matrix A of the weaving station 1 are rotated to drive the yarn device 2 in east and west directions of the weaving station 1 to rotate clockwise/anticlockwise by 2x360 degrees.
Step 4): and (2) rotating the weaving stations 1 of S (1, 1), S (1, 2), S (1, 3), S (1, 4), S (1, 5), S (3, 1), S (3, 2), S (3, 3), S (3, 4), S (3, 5), S (2, 2), S (4, 2), S (1, 4) and S (3, 4) which are odd-numbered rows and even-numbered columns in the matrix A of the weaving station 1 to drive the yarn device 2 in the east and west directions of the weaving station 1 to rotate by 2x360 degrees clockwise/anticlockwise.
Step 5): odd-numbered rows and even-numbered columns in a matrix A of the weaving station 1, namely S (2, 1), S (2, 2), S (2, 3), S (2, 4), S (2, 5), S (4, 1), S (4, 2), S (4, 3), S (4, 4), S (4, 5), S (1, 1), S (3, 1), S (1, 3), S (3, 3), S (1, 5) and S (3, 5) are rotated, and the yarn device 2 in east and west of the weaving station 1 is driven to rotate by 2x360 degrees clockwise/anticlockwise.
And (5) repeating the steps 2 to 5 for 1 time, wherein the arrangement of the yarn device 2 is not changed because each rotation is integral multiple of 360 degrees, but weaving knots are generated at the weaving mouths.
Step 6): as shown in fig. 4, the arrangement of yarn devices 24x5 is unchanged, changing the position of yarn devices 2 on knitting station 1, i.e. arranging 4x5 yarn devices 2 in rows and columns in both the north and south directions of knitting station 1 in matrix a of knitting station 1;
step 7): all weaving stations 1 of odd rows, namely S (1, 1), S (1, 2), S (1, 3), S (1, 4), S (1, 5), S (3, 1), S (3, 2), S (3, 3), S (3, 4) and S (3, 5), in the matrix A of the weaving stations 1 are rotated to drive the yarn devices 2 at the south side and the north side of the weaving stations 1 to rotate clockwise/anticlockwise by 2x360 degrees.
Step 8): all weaving stations 1 of even rows, namely S (2, 1), S (2, 2), S (2, 3), S (2, 4), S (2, 5), S (4, 1), S (4, 2), S (4, 3), S (4, 4) and S (4, 5), in the matrix A of the weaving stations 1 are rotated to drive the yarn devices 2 at the south side and the north side of the weaving stations 1 to rotate clockwise/anticlockwise by 2x360 degrees.
Step 9): the yarn feeder 24x5 is arranged unchanged, the position of the yarn feeder 2 on the knitting station 1 is changed, and the yarn feeder 2 returns to the initial arrangement position, at which the knitting of the minimum unit of the three-dimensional knitted filter net is completed.
And (5) circulating the steps from 2 to 9 to obtain the three-dimensional woven filter screen fabric.
Example three:
assuming that the matrix a of the weaving stations 1 is 3 rows and 8 columns, as shown in fig. 5, there are 3 × 8 weaving stations 1, denoted as S (i, j), where i is 1,2, 3, and j is 1,2, …, 8, and the corresponding nest matrix B is denoted as N (i, j), where i is 1,2, 3, and j is 1,2, …, 8, and the other parameters take the following values, t is 3, and k is 3.
The weaving process comprises the following steps:
step 1): in the matrix a of the weaving station 1, 3x8 yarn feeders 2 are arranged at intervals in rows and columns in the east and west directions of the weaving station 1;
step 2): odd rows and odd columns of the matrix A of the weaving station 1, namely S (1, 1), S (1, 2), S (1, 3), S (1, 4), S (1, 5), S (1, 6), S (1, 7), S (1, 8), S (3, 1), S (3, 2), S (3, 3), S (3, 4), S (3, 5), S (3, 6), S (3, 7), S (3, 8), S (2, 1), S (2, 3), S (2, 5) and S (2, 7) are rotated to drive the yarn devices 2 on the east and west sides of the weaving station 1 to rotate by 3x360 degrees clockwise/anticlockwise.
Step 3): and (2) rotating the weaving stations 1 of even rows and even columns, namely S (2, 1), S (2, 2), S (2, 3), S (2, 4), S (2, 5), S (2, 6), S (2, 7), S (2, 8), S (1, 2), S (3, 2), S (1, 4), S (3, 4), S (1, 6), S (3, 6), S (1, 8) and S (3, 8) in the matrix A of the weaving station 1 to drive the yarn devices 2 at the east and west sides of the weaving station 1 to rotate by 3x360 degrees clockwise/anticlockwise.
Step 4): odd rows and even columns in a matrix A of the weaving station 1, namely S (1, 1), S (1, 2), S (1, 3), S (1, 4), S (1, 5), S (1, 6), S (1, 7), S (1, 8), S (3, 1), S (3, 2), S (3, 3), S (3, 4), S (3, 5), S (3, 6), S (3, 7), S (3, 8), S (2, 2), S (2, 4), S (2, 6) and S (2, 8) are rotated, so that the yarn devices 2 on the east and west sides of the weaving station 1 are driven to rotate by 3x360 degrees clockwise/anticlockwise.
Step 5): odd-numbered rows in the matrix a of the weaving station 1, namely S (2, 1), S (2, 2), S (2, 3), S (2, 4), S (2, 5), S (2, 6), S (2, 7), S (2, 8), S (1, 1), S (3, 1), S (1, 3), S (3, 3), S (1, 5), S (3, 5), S (1, 7) and S (3, 7), are rotated to drive the yarn machines 2 on the east and west of the weaving station 1 to rotate 3x360 degrees clockwise/counterclockwise.
Repeating the steps 2 to 5 for 3 times, wherein the arrangement of the yarn device 2 is not changed because each rotation is integral multiple of 360 degrees, but weaving pattern knots are generated at the weaving mouths.
Step 6): the yarn feeders 23x8 are arranged unchanged, as shown in fig. 6, and the positions of the yarn feeders 2 on the knitting station 1 are changed, so that the yarn feeders 2 are arranged at intervals in the north and south directions of the knitting station 1;
step 7): all weaving stations 1 of odd rows, namely S (1, 1), S (1, 2), S (1, 3), S (1, 4), S (1, 5), S (1, 6), S (1, 7), S (1, 8), S (3, 1), S (3, 2), S (3, 3), S (3, 4), S (3, 5), S (3, 6), S (3, 7) and S (3, 8) in the matrix A of the weaving stations 1 are rotated to drive the yarn machines 2 on two sides of the weaving stations 1 to rotate by 3x360 degrees clockwise/anticlockwise.
Step 8): all weaving stations 1 of even rows, i.e. S (2, 1), S (2, 2), S (2, 3), S (2, 4), S (2, 5), S (2, 6), S (2, 7) and S (2, 8), in the matrix a of the weaving stations 1 are rotated to drive the yarn machines 2 on both sides of the weaving stations 1 to rotate 3x360 ° clockwise/counterclockwise.
Step 9): the yarn feeder 23x6 is arranged unchanged, the position of the yarn feeder 2 on the knitting station 1 is changed, and the yarn feeder 2 returns to the initial arrangement position, at which the knitting of the minimum unit of the three-dimensional knitted filter net is completed.
And (5) circulating the steps from 2 to 9 to obtain the three-dimensional woven filter screen fabric. The weaving process flow is simple, continuous production can be realized, the obtained filter screen has good interlayer performance, the requirements of users on the filter screen can be met, and the woven filter screen has good mechanical performance and can be suitable for harsh use environments.
Example four:
assuming that the matrix a of the weaving stations 1 is 3 rows and 8 columns, as shown in fig. 5, there are 3 × 8 weaving stations 1, denoted as S (i, j), where i is 1,2, 3, and j is 1,2, …, 8, and the corresponding nest matrix B is denoted as N (i, j), where i is 1,2, 3, and j is 1,2, …, 8, and the other parameters take the following values, t is 3, and k is 3.
The weaving process comprises the following steps:
step 1): 3x8 yarn feeders 2 are arranged at intervals in rows and columns in the southeast direction and the northwest direction of a matrix A of the weaving station 1;
step 2): odd rows and odd columns of the matrix A of the weaving station 1, namely S (1, 1), S (1, 2), S (1, 3), S (1, 4), S (1, 5), S (1, 6), S (1, 7), S (1, 8), S (3, 1), S (3, 2), S (3, 3), S (3, 4), S (3, 5), S (3, 6), S (3, 7), S (3, 8), S (2, 1), S (2, 3), S (2, 5) and S (2, 7) are rotated to drive the yarn devices 2 on two sides of the weaving station 1 to rotate clockwise/anticlockwise by 3x360 degrees.
Step 3): odd rows and even columns in a matrix A of the weaving station 1, namely S (1, 1), S (1, 2), S (1, 3), S (1, 4), S (1, 5), S (1, 6), S (1, 7), S (1, 8), S (3, 1), S (3, 2), S (3, 3), S (3, 4), S (3, 5), S (3, 6), S (3, 7), S (3, 8), S (2, 2), S (2, 4), S (2, 6) and S (2, 8) are rotated to drive the yarn devices 2 on two sides of the weaving station 1 to rotate by 3x360 degrees clockwise/anticlockwise.
Step 4): and (2) rotating the weaving stations 1 of even rows and even columns, namely S (2, 1), S (2, 2), S (2, 3), S (2, 4), S (2, 5), S (2, 6), S (2, 7), S (2, 8), S (1, 2), S (3, 2), S (1, 4), S (3, 4), S (1, 6), S (3, 6), S (1, 8) and S (3, 8) in the matrix A of the weaving station 1 to drive the yarn devices 2 on two sides of the weaving station 1 to rotate by 3x360 degrees clockwise/anticlockwise.
Step 5): odd-numbered rows in the matrix a of the weaving station 1, namely, the weaving stations 1 of S (2, 1), S (2, 2), S (2, 3), S (2, 4), S (2, 5), S (2, 6), S (2, 7), S (2, 8), S (1, 1), S (3, 1), S (1, 3), S (3, 3), S (1, 5), S (3, 5), S (1, 7) and S (3, 7) are rotated to drive the yarn machines 2 on both sides of the weaving station 1 to rotate clockwise/counterclockwise by 3x360 degrees.
Repeating the steps 2 to 5 for 3 times, wherein the arrangement of the yarn device 2 is not changed because each rotation is integral multiple of 360 degrees, but weaving pattern knots are generated at the weaving mouths.
Step 6): the yarn feeders 23x8 are arranged unchanged, as shown in fig. 6, and the positions of the yarn feeders 2 on the knitting station 1 are changed, so that the yarn feeders 2 are arranged at intervals in the northeast and southwest directions of the knitting station 1;
step 7): all weaving stations 1 of even rows, i.e. S (2, 1), S (2, 2), S (2, 3), S (2, 4), S (2, 5), S (2, 6), S (2, 7) and S (2, 8), in the matrix a of the weaving stations 1 are rotated to drive the yarn machines 2 on both sides of the weaving stations 1 to rotate 3x360 ° clockwise/counterclockwise.
Step 8): all weaving stations 1 of odd rows, namely S (1, 1), S (1, 2), S (1, 3), S (1, 4), S (1, 5), S (1, 6), S (1, 7), S (1, 8), S (3, 1), S (3, 2), S (3, 3), S (3, 4), S (3, 5), S (3, 6), S (3, 7) and S (3, 8) in the matrix A of the weaving stations 1 are rotated to drive the yarn machines 2 on two sides of the weaving stations 1 to rotate by 3x360 degrees clockwise/anticlockwise.
Step 9): the yarn feeder 23x6 is arranged unchanged, the position of the yarn feeder 2 on the knitting station 1 is changed, and the yarn feeder 2 returns to the initial arrangement position, at which the knitting of the minimum unit of the three-dimensional knitted filter net is completed.
And (5) circulating the steps from 2 to 9 to obtain the three-dimensional woven filter screen fabric.
Example five:
assuming that the matrix a of the weaving stations 1 is 3 rows and 8 columns, as shown in fig. 5, there are 3 × 8 weaving stations 1, denoted as S (i, j), where i is 1,2, 3, and j is 1,2, …, 8, and the corresponding nest matrix B is denoted as N (i, j), where i is 1,2, 3, and j is 1,2, …, 8, and the other parameters take the following values, t is 3, and k is 3.
The weaving process comprises the following steps:
step 1): 3x8 yarn feeders 2 arranged in rows and columns in the matrix a of the weaving station 1;
step 2): odd rows and even columns in a matrix A of the weaving station 1, namely S (1, 1), S (1, 2), S (1, 3), S (1, 4), S (1, 5), S (1, 6), S (1, 7), S (1, 8), S (3, 1), S (3, 2), S (3, 3), S (3, 4), S (3, 5), S (3, 6), S (3, 7), S (3, 8), S (2, 2), S (2, 4), S (2, 6) and S (2, 8) are rotated to drive the yarn devices 2 on two sides of the weaving station 1 to rotate by 3x360 degrees clockwise/anticlockwise.
Step 3): odd rows and odd columns of the matrix A of the weaving station 1, namely S (1, 1), S (1, 2), S (1, 3), S (1, 4), S (1, 5), S (1, 6), S (1, 7), S (1, 8), S (3, 1), S (3, 2), S (3, 3), S (3, 4), S (3, 5), S (3, 6), S (3, 7), S (3, 8), S (2, 1), S (2, 3), S (2, 5) and S (2, 7) are rotated to drive the yarn devices 2 on two sides of the weaving station 1 to rotate clockwise/anticlockwise by 3x360 degrees.
Step 4): odd-numbered rows in the matrix a of the weaving station 1, namely, the weaving stations 1 of S (2, 1), S (2, 2), S (2, 3), S (2, 4), S (2, 5), S (2, 6), S (2, 7), S (2, 8), S (1, 1), S (3, 1), S (1, 3), S (3, 3), S (1, 5), S (3, 5), S (1, 7) and S (3, 7) are rotated to drive the yarn machines 2 on both sides of the weaving station 1 to rotate clockwise/counterclockwise by 3x360 degrees.
Step 5): and (2) rotating the weaving stations 1 of even rows and even columns, namely S (2, 1), S (2, 2), S (2, 3), S (2, 4), S (2, 5), S (2, 6), S (2, 7), S (2, 8), S (1, 2), S (3, 2), S (1, 4), S (3, 4), S (1, 6), S (3, 6), S (1, 8) and S (3, 8) in the matrix A of the weaving station 1 to drive the yarn devices 2 on two sides of the weaving station 1 to rotate by 3x360 degrees clockwise/anticlockwise.
Repeating the steps 2 to 5 for 3 times, wherein the arrangement of the yarn device 2 is not changed because each rotation is integral multiple of 360 degrees, but weaving pattern knots are generated at the weaving mouths.
Step 6): the yarn feeder 23x8 is arranged unchanged, as shown in fig. 6, to change the position of the yarn feeder 2 on the weaving station 1;
step 7): all weaving stations 1 of even rows, i.e. S (2, 1), S (2, 2), S (2, 3), S (2, 4), S (2, 5), S (2, 6), S (2, 7) and S (2, 8), in the matrix a of the weaving stations 1 are rotated to drive the yarn machines 2 on both sides of the weaving stations 1 to rotate 3x360 ° clockwise/counterclockwise.
Step 8): all weaving stations 1 of odd rows, namely S (1, 1), S (1, 2), S (1, 3), S (1, 4), S (1, 5), S (1, 6), S (1, 7), S (1, 8), S (3, 1), S (3, 2), S (3, 3), S (3, 4), S (3, 5), S (3, 6), S (3, 7) and S (3, 8) in the matrix A of the weaving stations 1 are rotated to drive the yarn machines 2 on two sides of the weaving stations 1 to rotate by 3x360 degrees clockwise/anticlockwise.
Step 9): the yarn feeder 23x6 is arranged unchanged, the position of the yarn feeder 2 on the knitting station 1 is changed, and the yarn feeder 2 returns to the initial arrangement position, at which the knitting of the minimum unit of the three-dimensional knitted filter net is completed.
And (5) circulating the steps from 2 to 9 to obtain the three-dimensional woven filter screen fabric. The weaving process has simple steps and high production rate, can realize continuous production, and simultaneously, the matrix arrangement of the weaving station 1 can be set according to the requirements, thereby greatly meeting the requirements of different users and greatly adapting to the market requirements.
The schematic structural diagram of the single-layer filter screen fabric woven by the yarn 3 through the process is shown in fig. 7, the single-layer filter screen fabric obtained through the weaving process is good in mechanical performance, different arrangement matrixes are arranged according to actual requirements, filter screen fabrics with different weaving layers are further woven, the interlayer performance is good, one layer of the three-dimensional filter screen fabric is damaged, and the retained layer fabric still has a complete fabric tissue, so that the filter material is an ideal filter material.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A three-dimensional filter screen weaving process is characterized in that: the process is completed on a three-dimensional knitting machine, the three-dimensional knitting machine comprises yarn devices and knitting stations, the knitting stations are arranged into a matrix A with m rows and n columns, m × n knitting stations are provided in total and are marked as S (i, j), i is 1,2, … m, j is 1,2, …, n, the yarn devices are movably arranged around the knitting stations, the knitting stations drive the yarn devices to rotate around the knitting stations while rotating around the axes of the knitting stations, and the knitting stations are controlled to regularly move to complete knitting, and the process comprises the following steps:
step (1): arranging m multiplied by n yarn feeders in a weaving station matrix A according to row-column intervals;
step (2): rotating weaving stations in odd rows and odd columns in the weaving station matrix A to drive yarn devices on two sides of the weaving stations to rotate t multiplied by 360 degrees, wherein t is a positive integer;
and (3): rotating weaving stations in even rows and even columns in the weaving station matrix A to drive yarn devices on two sides of the weaving stations to rotate t multiplied by 360 degrees, wherein t is a positive integer;
and (4): rotating weaving stations in odd rows and even columns in the weaving station matrix A to drive yarn devices on two sides of the weaving stations to rotate t multiplied by 360 degrees, wherein t is a positive integer;
and (5): rotating weaving stations in even rows and odd columns in a weaving station matrix A to drive yarn devices on two sides of the weaving stations to rotate t multiplied by 360 degrees, wherein t is a positive integer;
and (6): the arrangement of the yarn devices is unchanged, and the positions of the yarn devices on the weaving station are changed;
and (7): rotating all weaving stations in odd rows in the weaving station matrix A to drive yarn devices on two sides of the weaving stations to rotate t multiplied by 360 degrees, wherein t is a positive integer;
and (8): rotating all weaving stations in an even number of rows in the weaving station matrix A to drive yarn devices on two sides of the weaving stations to rotate t multiplied by 360 degrees, wherein t is a positive integer;
and (9): the arrangement of the yarn device is unchanged, the position of the yarn device on the weaving station is changed, the yarn device returns to the initial arrangement position, and the weaving of the minimum unit of the three-dimensional weaving filter screen is finished at the moment;
and (5) circulating the steps (2) to (9) to obtain the three-dimensional filter screen fabric, wherein the positions of any two steps of the step (2), the step (3), the step (4) and the step (5) can be exchanged, and the positions of the step (7) and the step (8) can be exchanged.
2. The three-dimensional filter screen weaving process according to claim 1, characterized in that after step (5) is finished, steps (2) to (5) are repeated k times, wherein k is a non-negative integer.
3. A process for weaving three-dimensional filtering nets according to claim 1, characterized in that in the steps (2) to (8), said rotation is a clockwise or counterclockwise rotation of the yarn machine around the weaving station.
4. A three dimensional filter mesh fabric woven using the process of any one of claims 1 to 3.
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| JPS5259758A (en) * | 1975-11-06 | 1977-05-17 | Yamamoto Jiyuujirou | Carrier arranging device for nets braider |
| JPS56134244A (en) * | 1980-03-24 | 1981-10-20 | Taito Seiko Kk | Apparatus for producing braided string knotless net |
| CN102011269B (en) * | 2010-12-20 | 2012-07-04 | 东华大学 | Net shape preparation method of variable cross-section three-dimensional braiding preprofiling piece |
| CN104005172B (en) * | 2014-05-26 | 2016-04-06 | 东华大学 | A kind of preparation method of hybrid three-dimensional woven preform |
| CN104652036B (en) * | 2015-03-24 | 2017-03-29 | 中国人民解放军国防科学技术大学 | A kind of preparation method of three-dimensional four-way blended fabric |
| CN204550989U (en) * | 2015-03-30 | 2015-08-12 | 西安工程大学 | A kind of chassis driving device realizing four step rule 3 D weaving |
| CN106609417B (en) * | 2016-11-04 | 2018-07-13 | 中国纺织科学研究院有限公司 | A kind of 3 D weaving technique and three dimensional fabric |
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