CN116219558B - Spinning nozzle control method and device and spinning processing method - Google Patents
Spinning nozzle control method and device and spinning processing method Download PDFInfo
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- CN116219558B CN116219558B CN202310093368.6A CN202310093368A CN116219558B CN 116219558 B CN116219558 B CN 116219558B CN 202310093368 A CN202310093368 A CN 202310093368A CN 116219558 B CN116219558 B CN 116219558B
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- liquid level
- mounting frame
- level sensor
- spray head
- height
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- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D4/00—Spinnerette packs; Cleaning thereof
- D01D4/02—Spinnerettes
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D4/00—Spinnerette packs; Cleaning thereof
- D01D4/02—Spinnerettes
- D01D4/025—Melt-blowing or solution-blowing dies
Abstract
The invention relates to the technical field of spinning production, in particular to a spinning nozzle control method and device and a spinning processing method, wherein the control method comprises the following steps: s10: a mounting frame is arranged above the trough, and a spray head is arranged on the mounting frame; s20: setting a process distance b0, and adjusting the height of the mounting frame to enable the distance b=b0 between the spray head and the liquid level; a liquid level sensor is arranged at the edge of the trough; s30: opening the spray head; setting time t milliseconds, and recording liquid level sensor measurement data every t milliseconds; s40: setting a time interval n x t, wherein n is a positive integer; calculating the height change value delta of the average liquid level height havg of two adjacent time intervals through an integral algorithm model; s50: setting a threshold value, judging whether the value of delta exceeds the threshold value in each time interval, and if the value of delta does not exceed the threshold value, maintaining the height of the mounting frame; if the threshold is exceeded, an adjustment distance c=havg-h 0 is calculated and the mounting frame is moved by a distance c in the height direction. The invention can effectively ensure the stability of the distance between the spray head and the liquid level in the spinning process.
Description
Technical Field
The invention relates to the technical field of spinning production, in particular to a spinning nozzle control method, a spinning nozzle control device and a spinning processing method.
Background
Spinning is a process for manufacturing chemical fibers, comprising the following specific steps: after the colloid solution or melt made of some high molecular compound is melted into melt, the colloid solution or melt is sprayed out through the fine holes on the spray head, so that the colloid solution or melt enters other liquid chemical liquid materials and generates chemical reaction, and finally, a thread-shaped finished product is formed.
In the spinning process, the distance between the spray head and the chemical liquid surface below the spray head influences the form of the colloid solution or melt when the colloid solution or melt enters the chemical liquid, so that the distance between the spray head and the chemical liquid surface needs to be strictly controlled in the spinning process. In the prior art, the distance between the spray head and the liquid level can be ensured only when the spray head is installed, the spray head can be fixed after the distance is adjusted in place, but the liquid level can inevitably shake in the production process, and when the shaking amplitude is too large, the excessive distance between the spray head and the liquid level can be caused, so that the forming effect of a final product can be influenced.
Therefore, there is a need for a control method capable of controlling the operation of the head so as to maintain the distance between the head and the liquid surface uniform.
Disclosure of Invention
The invention provides a spinning nozzle control method which can effectively solve the problems in the background technology. The invention also provides a spinning nozzle control device and a spinning processing method, which can achieve the same technical effect.
The invention provides a spinning nozzle control method, which comprises the following steps:
s10: a mounting frame which slides vertically is arranged above the trough, and a spray head is arranged on the mounting frame;
s20: setting a process distance b0, and adjusting the height of the mounting frame to enable the distance b=b0 between the spray head and the liquid level; a liquid level sensor is arranged at the edge of the trough and is used for measuring the height between the liquid level and the installation surface of the liquid level;
s30: opening a spray head to spray the second liquid into the first liquid; setting time t milliseconds, and recording measurement data of the liquid level sensor every t milliseconds;
s40: setting a time interval n x t, wherein n is a positive integer; calculating the height change value delta of the average liquid level height havg of two adjacent time intervals through an integral algorithm model;
s50: setting a threshold value, judging whether the value of delta exceeds the threshold value in each time interval, and if the value of delta does not exceed the threshold value, maintaining the height of the mounting frame; if the threshold is exceeded, an adjustment distance c=havg-h 0 is calculated and the mounting frame is moved by a distance c in the height direction.
Further, the specific steps of step S20 are as follows:
s21: a liquid level sensor is arranged on the mounting frame, and the vertical distance between the mounting surface of the liquid level sensor and the bottom surface of the spray head is recorded as a;
s22: the mounting frame is moved downwards until the liquid level sensor stretches into the first liquid material, and the height measured by the liquid level sensor at the moment is recorded as H0;
s23: the height of the mounting frame is kept unchanged, the liquid level sensor is detached from the mounting frame and then mounted on the edge of the trough, the liquid level sensor extends into the first liquid material, and the height measured by the liquid level sensor at the moment is recorded as h0; the height difference of the two installation is deltah=h0-H0, and the distance b=h0+deltah-a between the spray head and the liquid level at the moment is calculated;
s24: the mounting frame is moved such that b=b0.
Further, in step S21, when the liquid level sensor is mounted, the liquid level sensor is screwed by using a torque wrench, and the screwing torque of the torque wrench is set to be T;
in step S22, when the liquid level sensor is mounted, the liquid level sensor is screwed by using the torque wrench, and the screwing torque of the torque wrench is also set to T.
Further, in step S10, a servo system is provided to drive the movement of the mounting frame, and there are:
in step S23, while recording h0, the recording servo system is at the time of position S0;
in step S24, after setting the process distance b0, the servo system moves to the position S1, s1=s0+b-b 0.
Further, in step S50, when the mounting frame needs to be moved, the servo system is moved to a position S2, s2=s0+b-b1+δ -h.
Further, the liquid level sensor is a magnetostrictive sensor.
Further, in step S40, the specific algorithm of the integration algorithm model is as follows:
recording the measurement data of the liquid level sensor read for the q-th time as hq;
the average height havg of the liquid level in each time interval is calculated as follows:
in the 1 st time interval, the hq value of q= {1,2 … … n } is taken, and havg 1= (h1+h2+ … … +hq)/n is taken;
in the 2 nd time interval, the hq value of q= {2,3 … … (2+n-1) }, at this time havg 2= (h2+h3+ … … +h (2+n-1))/n;
in the x-th time interval, taking the hq value of q= { x, (x+1) … … (x+n-1) }, at this time havgx= (hx+h (x+1) + … … +h (x+n-1))/n;
for the x-th time interval δx=havgx-havg (x-1).
The invention also provides a spinning nozzle control device, which comprises:
the mounting rack vertically slides above the trough; the mounting frame is provided with a spray head;
the liquid level sensor is arranged on the side surface of the trough and used for detecting the height between the liquid level and the installation surface of the liquid level sensor;
and the control system is used for collecting detection data of the liquid level sensor and controlling the movement of the mounting frame through the spinning nozzle control method.
Further, fixing seats are arranged on the side face of the mounting frame and the edge of the trough, and triangular reinforcing ribs are arranged on the fixing seats.
The invention also provides a spinning processing method, which comprises the following steps: filling a liquid first liquid material into a trough, arranging a spray head above the trough, and spraying a liquid second liquid material into the first liquid material by using the spray head; the movement of the spray head is controlled by the spinning spray head control method.
By the technical scheme of the invention, the following technical effects can be realized:
according to the invention, the liquid level sensor and the spray head are separated, so that the detection of the liquid level sensor on the liquid level is not easily influenced by the movement and the work of the spray head, the anti-interference capability of the liquid level sensor is effectively ensured, and the detection accuracy is improved;
when judging the liquid level, an integral algorithm model is adopted to judge the liquid level change according to the comprehensive condition of the liquid level change in a certain time interval, so that the influence of partial error data caused by external interference on the control whole can be effectively filtered, and the anti-interference capability of the control method whole is improved;
the method also uses the height change value as a basis for judging whether the height of the mounting frame needs to be adjusted to drive the spray head to move, so that the spray head can move in a stage triggering mode, the problem of oscillation caused by frequent adjustment is avoided, the stability of the spray head is effectively ensured, and the spinning quality is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to the drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic diagram of step S21 in the method for controlling a spinning nozzle according to the present invention;
FIG. 2 is a schematic diagram of step S22 in the method for controlling a spinning nozzle according to the present invention;
FIG. 3 is a schematic diagram of step S23 in the method for controlling a spinning nozzle according to the present invention;
FIG. 4 is a schematic diagram of steps S30 to S50 in the spinning nozzle control method of the present invention;
reference numerals: 1. a trough; 2. a spray head; 3. a mounting frame; 4. a liquid level sensor; 5. a fixing seat.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
In the description of the present invention, it should be noted that the directions or positional relationships indicated as being "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are directions or positional relationships based on the drawings are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements to be referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, or may be internal communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
During spinning, a first liquid material is usually arranged in a trough 1, and then a spray head 2 is moved above the trough 1; the second liquid material is filled in the spray head 2, and a liquid spraying structure is arranged in the spray head 2, so that the second liquid material in the spray head 2 can pass through the small Kong Penru first liquid material at the bottom of the spray head 2; and after the first liquid material enters the second liquid material, carrying out chemical reaction with the second liquid material to form a solid finished yarn. The stability of the distance between the nozzle 2 and the liquid surface is extremely important, which directly affects the quality of the finished yarn.
The invention provides a spinning nozzle control method, which comprises the following steps:
s10: a mounting frame 3 sliding vertically is arranged above the trough 1, and a spray head 2 is arranged on the mounting frame 3; the spray head 2 is preferably arranged at the bottommost part of the mounting frame 3, so that the mounting frame 3 is prevented from entering the first liquid material to pollute the first liquid material;
s20: manually setting a process distance b0 according to specific process requirements, and then adjusting the height of the mounting frame 3 to enable the distance b=b0 between the spray head 2 and the liquid level; a liquid level sensor 4 is arranged at the edge of the trough 1, and the liquid level sensor 4 can measure the height between the liquid level and the installation surface thereof;
s30: opening the spray head 2 to spray the second liquid into the first liquid; manually setting time t milliseconds according to specific precision requirements, and recording measurement data of the liquid level sensor 4 every t milliseconds; the smaller the value of t, the more frequently the measurement data of the liquid level sensor 4 is recorded, the higher the accuracy;
s40: setting a time interval n x t, wherein n is a positive integer; calculating the height change value delta of the average liquid level height havg of two adjacent time intervals through an integral algorithm model;
s50: setting a threshold value, judging whether the value of delta exceeds the threshold value in each time interval, and if the value of delta does not exceed the threshold value, maintaining the height of the mounting frame 3; if the threshold value is exceeded, calculating an adjustment distance c=havg-h 0, and moving the mounting frame 3 by a distance c in the height direction; the value of c retains a sign when calculated and the sign is used to represent a downward movement and an upward movement, respectively, when the mounting 3 is moved.
The traditional height adjustment to the mounting bracket 3 needs to measure shower nozzle 2 through the manual work and to liquid level distance b, will lead to artifical light to need through adjustment and measurement multiple times just can reach b=b0, and it is difficult to see that this kind of mode is difficult, inefficiency not only to the measuring result appears great deviation easily. In order to improve the adjustment efficiency and accuracy of the mounting frame 3, the method preferably provides an initial adjustment method of the mounting frame 3 in step S20, which specifically includes the following steps:
s21: as shown in fig. 1, a liquid level sensor 4 is arranged on a mounting frame 3, and the vertical distance between the mounting surface of the liquid level sensor 4 and the bottom surface of a spray head 2 is recorded as a;
s22: as shown in fig. 2, the mounting frame 3 is moved down until the liquid level sensor 4 extends into the first liquid material, and the height measured by the liquid level sensor 4 at the moment is recorded as H0;
s23: as shown in fig. 3, the height of the mounting frame 3 is kept unchanged, the liquid level sensor 4 is detached from the mounting frame 3 and then is mounted on the edge of the trough 1, the liquid level sensor 4 extends into the first liquid material, and the height measured by the liquid level sensor 4 at the moment is recorded as h0; the height difference between the two installations is Δh=h0-H0, and the distance b=h0+Δh-a from the spray head 2 to the liquid surface at this time is calculated;
s24: the mounting frame 3 is moved so that b=b0.
Because the shaking amplitude of the liquid level is small (usually, only a few wires are provided), when the liquid level sensor 4 is installed twice, if the consistency of the screwing force of the two times cannot be ensured, the difference is generated between the screwing depths when the liquid level sensor 4 is installed twice (the difference can reach a few wires in general), and the detection result is greatly influenced, therefore, the method preferably ensures the consistency of the screwing force when the liquid level sensor 4 is installed twice through a torque wrench, and the specific operation method is as follows:
in step S21, when the liquid level sensor 4 is mounted, the liquid level sensor 4 is screwed by using a torque wrench, and the screwing torque of the torque wrench is set to T;
in step S22, when the liquid level sensor 4 is mounted, the liquid level sensor 4 is screwed with a torque wrench, and the screwing torque of the torque wrench is also set to T.
In order to ensure accurate control of the height of the mounting frame 3, in the step S10, a servo system is preferably provided to drive the mounting frame 3 to move, the servo system generally comprises a servo motor, a servo driver, an upper computer (such as a PLC, a chip, etc.) and a slider, the servo motor drives the slider to slide through a screw transmission structure, the servo driver can control the servo motor to rotate and record the rotation parameters of the servo motor, and the upper computer can accurately calculate the position S of the slider through the data of the parameters recorded by the servo driver, the parameters transmitted by the screw, etc. The method utilizes the characteristic that the servo system can accurately position, and the mounting frame 3 is fixedly connected with the sliding block, so that the accurate control of the position of the mounting frame 3 can be ensured, and at the moment, the method comprises the following steps:
in step S23, while recording h0, the recording servo system is at the time of position S0;
in step S24, after setting the process distance b0, the servo system moves to the position S1, s1=s0+b-b 0.
In step S50, when it is desired to move the mounting frame 3, the servo system is moved to the position S2, s2=s0+b-b1+δ -h.
The liquid level sensor 4 can have various existing embodiments, wherein a magnetostrictive sensor is most preferably used, the magnetostrictive sensor can accurately detect the absolute position of the movable magnetic ring through an internal non-contact measurement and control technology, the detected position is most accurate, the influence of friction in the detection process is minimum, and the accuracy of detected data can be effectively improved.
The method provides an optimal integral algorithm model in step S40, and the specific algorithm is as follows:
recording the measurement data of the liquid level sensor 4 read for the q-th time as hq;
the average height havg of the liquid level in each time interval is calculated as follows:
in the 1 st time interval, the hq value of q= {1,2 … … n } is taken, and havg 1= (h1+h2+ … … +hq)/n is taken;
in the 2 nd time interval, the hq value of q= {2,3 … … (2+n-1) }, at this time havg 2= (h2+h3+ … … +h (2+n-1))/n;
in the x-th time interval, taking the hq value of q= { x, (x+1) … … (x+n-1) }, at this time havgx= (hx+h (x+1) + … … +h (x+n-1))/n;
for the x-th time interval δx=havgx-havg (x-1).
Taking t=10, n=10 as an example, i.e. the measurement data of the liquid level sensor 4 is recorded every 10 ms, and a time interval is 10×10=100 ms, there are:
when the measurement data of the liquid level sensor 4 is recorded for 10 times, the detection of the 1 st time interval is completed, and at the moment, h1 and h2 … … h10 are taken to calculate the average liquid level height havg, havg 1= (h1+h2+ … … +h10)/10;
when the measurement data of the 11 th liquid level sensor 4 is recorded, the detection of the 2 nd time interval is completed, and at the moment, h2 and h3 … … h11 are taken to calculate the average liquid level height havg, havg 2= (h2+h3+ … … +h11)/10; then, in the 2 nd time interval, the height change value δ2=havg2-havg 1, and then judging whether δ2 exceeds a threshold value and controlling the mounting frame 3 according to a judgment result;
and so on, after the measurement data of the liquid level sensor 4 are recorded for 10 times, each time a new measurement data of the liquid level sensor 4 is recorded, a new time interval is formed, and the height change value delta of the new time interval is calculated and judged to control the action of the subsequent mounting frame 3.
The invention also provides a spinning nozzle control device, as shown in fig. 4, comprising:
the mounting frame 3 vertically slides above the trough 1; the mounting frame 3 is provided with a spray head 2;
the liquid level sensor 4 is arranged on the side surface of the trough 1 and is used for detecting the height between the liquid level and the installation surface of the liquid level;
and the control system is used for collecting detection data of the liquid level sensor 4 and controlling the movement of the mounting frame 3 through the spinning nozzle control method.
The fixing base 5 is arranged on the side face of the mounting frame 3 and the edge of the trough 1, triangular reinforcing ribs are arranged on the fixing base 5, so that the structure of the fixing base 5 is more stable, the liquid level sensor 4 is prevented from shaking on the fixing base 5, and the detection accuracy of the liquid level sensor 4 is guaranteed.
The invention also provides a spinning processing method, which can be adopted for all the processes of spinning processing by using two different liquid chemical raw materials, and specifically comprises the following steps: filling a liquid first liquid material into a trough 1, arranging a spray head 2 above the trough 1, and spraying a liquid second liquid material into the first liquid material by using the spray head 2; the movement of the spray head 2 is controlled by the above-mentioned spinning spray head control method, and parameters in the spinning spray head control method are set according to specific raw materials of the first liquid material and the second liquid material.
The foregoing has outlined and described the basic principles, features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. A method of controlling a spinning nozzle, comprising:
s10: a mounting frame (3) sliding vertically is arranged above the trough (1), and a spray head (2) is arranged on the mounting frame (3);
s20: setting a process distance b0, and adjusting the height of the mounting frame (3) to enable the distance b=b0 between the spray head (2) and the liquid level; a liquid level sensor (4) is arranged at the edge of the trough (1) and is used for measuring the height between the liquid level and the installation surface thereof; the method comprises the following specific steps:
s21: a liquid level sensor (4) is arranged on the mounting frame (3), and the vertical distance between the mounting surface of the liquid level sensor (4) and the bottom surface of the spray head (2) is recorded as a;
s22: the mounting frame (3) is moved downwards until the liquid level sensor (4) stretches into the first liquid material, and the height measured by the liquid level sensor (4) at the moment is recorded as H0;
s23: the height of the mounting frame (3) is kept unchanged, the liquid level sensor (4) is detached from the mounting frame (3) and then mounted on the edge of the trough (1), the liquid level sensor (4) stretches into the first liquid material, and the height measured by the liquid level sensor (4) at the moment is recorded as h0; the height difference of the two installation is deltah=h0-H0, and the distance b=h0+deltah-a from the spray head (2) to the liquid level is calculated;
s24: moving the mounting frame (3) such that b=b0;
s30: opening a spray head (2) to spray the second liquid into the first liquid; setting time t milliseconds, and recording measurement data of the liquid level sensor (4) every t milliseconds;
s40: setting a time interval n x t, wherein n is a positive integer; calculating the height change value delta of the average liquid level height havg of two adjacent time intervals through an integral algorithm model;
the specific algorithm of the integral algorithm model is as follows:
recording the measurement data of the liquid level sensor (4) read for the q-th time as hq;
the average height havg of the liquid level in each time interval is calculated as follows:
in the 1 st time interval, the hq value of q= {1,2 … … n } is taken, and havg 1= (h1+h2+ … … +hq)/n is taken;
in the 2 nd time interval, the hq value of q= {2,3 … … (2+n-1) }, at this time havg 2= (h2+h3+ … … +h (2+n-1))/n;
in the x-th time interval, taking the hq value of q= { x, (x+1) … … (x+n-1) }, at this time havgx= (hx+h (x+1) + … … +h (x+n-1))/n;
for the x-th time interval δx=havgx-havg (x-1);
s50: setting a threshold value, judging whether the value of delta exceeds the threshold value in each time interval, and if the value of delta does not exceed the threshold value, maintaining the height of the mounting frame (3); if the threshold value is exceeded, an adjustment distance c=havg-h 0 is calculated and the mounting bracket (3) is moved by a distance c in the height direction.
2. The spinning nozzle control method according to claim 1, characterized in that in step S21, when the liquid level sensor (4) is mounted, a torque wrench is used to screw the liquid level sensor (4), and the screw torque of the torque wrench is set to T;
in step S22, when the liquid level sensor (4) is mounted, the liquid level sensor (4) is screwed by using the torque wrench, and the screwing torque of the torque wrench is also set to T.
3. The method according to claim 1, wherein in step S10, a servo system is provided to drive the movement of the mounting frame (3), and there is:
in step S23, while recording h0, the recording servo system is at the time of position S0;
in step S24, after setting the process distance b0, the servo system moves to the position S1, s1=s0+b-b 0.
4. A method according to claim 3, characterized in that in step S50, when it is desired to move the mounting frame (3), the servo system is moved to position S2, s2=s0+b-b1+δ -h.
5. The spinning nozzle control method according to claim 1, characterized in that the liquid level sensor (4) is a magnetostrictive sensor.
6. A spinning nozzle control device, characterized by comprising:
the mounting frame (3) vertically slides above the trough (1); the mounting frame (3) is provided with a spray head (2);
the liquid level sensor (4) is arranged on the side surface of the trough (1) and is used for detecting the height between the liquid level and the installation surface of the liquid level;
the control system is used for collecting detection data of the liquid level sensor (4) and controlling movement of the mounting frame (3) and the spray head (2) through the spinning spray head control method according to any one of claims 1-5.
7. The spinning nozzle control device according to claim 6, wherein fixing seats (5) are arranged on the side face of the mounting frame (3) and the edge of the trough (1), and triangular reinforcing ribs are arranged on the fixing seats (5).
8. A spinning process comprising: filling a liquid first liquid material into a trough (1), arranging a spray head (2) above the trough (1), and spraying a liquid second liquid material into the first liquid material by using the spray head (2); the method is characterized in that the movement of the nozzle (2) is controlled by the spinning nozzle control method according to any one of claims 1 to 5.
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| CN202310093368.6A CN116219558B (en) | 2023-02-10 | 2023-02-10 | Spinning nozzle control method and device and spinning processing method |
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| CN102251295A (en) * | 2010-05-19 | 2011-11-23 | 丰田纺织株式会社 | Melt spinning method and apparatus |
| CN103898622A (en) * | 2014-03-18 | 2014-07-02 | 广东工业大学 | Electrostatic spinning device and cleaning method of electrostatic spinning nozzle of electrostatic spinning device |
| CN110117825A (en) * | 2019-06-18 | 2019-08-13 | 广东工业大学 | It is centrifuged electrostatic spinning rotating liquid surface height controlling system |
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2023
- 2023-02-10 CN CN202310093368.6A patent/CN116219558B/en active Active
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| EP1898265A2 (en) * | 2006-09-11 | 2008-03-12 | Ricoh Company, Ltd. | Apparatus for producing toner precursor, and method for the same, fibrous toner precursor, apparatus for producing toner, and method for producing electrophotographic toner and fine resin particles |
| CN102251295A (en) * | 2010-05-19 | 2011-11-23 | 丰田纺织株式会社 | Melt spinning method and apparatus |
| CN103898622A (en) * | 2014-03-18 | 2014-07-02 | 广东工业大学 | Electrostatic spinning device and cleaning method of electrostatic spinning nozzle of electrostatic spinning device |
| CN110117825A (en) * | 2019-06-18 | 2019-08-13 | 广东工业大学 | It is centrifuged electrostatic spinning rotating liquid surface height controlling system |
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