Continuous spinning machine control system

Abstract

The utility model discloses a control system of a continuous spinning machine, which is characterized in that a sealing cover is respectively arranged on the outer side of a processing roller and the outer side of a dryer, so that high-concentration gas generated in the silk ring processing process at the processing roller is separated from low-concentration gas generated in the silk ring processing process at the dryer; the two sealing covers are respectively provided with an exhaust system, high-concentration gas and low-concentration gas are respectively collected and treated, the waste gas treatment efficiency is improved, the environmental protection requirement is met, the enterprise burden is relieved, the PLC sensors of the two sealing covers can respectively control the air speeds in the two exhaust systems, the air speed is controlled to be low in the sealing covers on the side of the treatment roller, and the treatment effect is good. The two exhaust systems are provided with air speed sensors respectively, the air speed is controlled to be high in a sealing cover on the dryer side, and water vapor is pumped out as quickly as possible so that the drying efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic control of spinning machines, in particular to a control system for a continuous spinning machine. Background Art

[0002] In the prior art, a spinning machine is a machine that forms a filament from a fiber-forming polymer solution or melt. According to different fiber spinning methods, spinning machines are divided into three types: wet spinning machines, melt spinning machines, and dry spinning machines. The difference from a short fiber spinning machine is that a winding mechanism for the filaments after coagulation is added. The filaments coming out of the coagulation bath are washed with water and passed through a guide wire disk, and then enter a high-speed rotating centrifuge tank through a guide wire funnel that reciprocates up and down. Such a spinning machine is called a centrifugal tank spinning machine. If the filaments are wound on a bobbin after passing through a guide wire disk, it is called a bobbin spinning machine. If some post-processing steps are provided before winding, it is called a semi-continuous spinning machine. If all spinning and post-processing steps are completed continuously on the spinning machine, it is called a continuous spinning machine.

[0003] At present, the domestic production of viscose fiber has increased significantly, the application of viscose fiber has become more and more extensive, and the market has increasingly stringent requirements on the quality of viscose fiber products. Therefore, viscose fiber manufacturers have increasingly higher requirements for the intelligent control of continuous spinning viscose filament machine equipment. At present, the control system of continuous spinning machines still has problems that need to be solved urgently, such as single control, complex control circuits, high equipment failure rate, low speed, low equipment flexibility, and inability to respond instantly to product improvements.

[0004] The utility model with publication number CN201762487U discloses a spinning machine drive control system, including a host, a programmable controller, a field operation panel, a rectifier unit, an inverter, a brake carrier and a brake resistor, which is characterized in that the host is connected to the programmable controller, the programmable controller is connected to the field operation panel, the programmable controller is connected to the inverter communication module, the rectifier unit is connected to the inverter and the brake carrier through a DC bus, and the brake carrier is connected to the brake resistor. The utility model is also provided with a motor, which is connected to the inverter. The inverter described in the utility model is 3 to 40 units. The utility model has the characteristics of controlling the drafting rate of the spinning machine, solving the interference caused by the motor power generation, simple and practical operation, and energy saving.

[0005] However, this patent cannot achieve automatic control of the pressure, temperature, lint detection, wind speed, broken wire detection, pH value, etc. of the continuous spinning machine. It requires manual control of the temperature, pressure, pH value, etc. It cannot automatically control and alarm when the temperature, pressure, and pH value are abnormal. It requires manual detection of lint and broken wires, and it cannot be discovered and dealt with in time when lint and broken wires occur, which seriously affects subsequent processes.

[0006] Therefore, providing a fully automatic continuous spinning machine control system is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0007] The utility model aims to provide a continuous spinning machine control system and a control method thereof. By setting detection sensors for hairy yarns, broken yarns, temperature, pressure, rotation speed, wind speed, pH and the like and electrically connecting them to a PLC controller respectively, the full automatic control of the continuous spinning machine is realized, and abnormalities can be discovered in time and processed and alarmed.

[0008] In order to achieve the above-mentioned invention object, the technical solution of the utility model is as follows:

[0009] A continuous spinning machine control system, comprising a continuous spinning machine and a PLC controller,

[0010] The continuous spinning machine comprises a viscose pump, an acid bath chamber, a spinneret, a treatment roller, a dryer, a balance and a winding head. The treatment roller and the dryer are respectively provided with sealing covers, and exhaust systems are respectively provided in the two sealing covers. A leaching component is provided in the sealing cover outside the treatment roller; the exhaust system comprises an exhaust fan and an exhaust duct, and an acid bath pump is provided in the acid bath chamber; the leaching component comprises a leaching pump,

[0011] The adhesive pump, acid bath pump, treatment roller, rinse pump, dryer, balance and winding head are respectively provided with motors to provide power, and the motors are respectively provided with motor controllers.

[0012] The acid bath chamber, the elution assembly and the dryer are respectively provided with a temperature sensor and a temperature regulator;

[0013] The adhesive pump is provided with a pressure sensor;

[0014] The processing roller is provided with a rotation speed detection device;

[0015] The motor controller, temperature sensor, temperature regulator, pressure sensor and rotation speed detection device are electrically connected to the PLC controller respectively.

[0016] The PLC controller is provided with a human-machine interface;

[0017] The motors of the processing roller and the adhesive pump are synchronous motors, and the motor of the counterweight is a servo motor;

[0018] The motor controllers of the adhesive pump, treatment roller, dryer, acid bath pump, rinse pump, winder and exhaust fan are frequency converters;

[0019] The exhaust system also includes a wind speed sensor, which is electrically connected to the PLC controller.

[0020] A broken wire detector and a hairy wire detector are arranged between the dryer and the balance; the broken wire detector and the hairy wire detector are electrically connected to the PLC controller respectively.

[0021] A pH detector is also provided in the viscose pump, and the pH detector is electrically connected to the PLC controller.

[0022] The control system is also provided with an alarm device, and the alarm device is electrically connected to the PLC controller.

[0023] Beneficial effects of the utility model:

[0024] In the utility model, independent sealing covers are respectively arranged on the outsides of the processing roller and the dryer, and independent exhaust systems are respectively arranged in the two sealing covers to separate the waste gas generated by the processing roller and the dryer, and different treatments are respectively carried out according to the characteristics of the waste gas generated on both sides, thereby improving the waste gas treatment efficiency, meeting environmental protection requirements, and reducing the burden on enterprises; a motor controller is arranged on each motor, and the speed of the motor is controlled by a PLC controller, and the pH value and pressure in the production process are monitored by a pH detector and a pressure sensor to ensure the safe operation of the spinning machine, and the spinning is detected by setting a broken wire detector and a hairy wire detector to ensure the spinning quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the structure of the control system of the continuous spinning machine of the utility model.

[0026] Figure 2 This is a control logic diagram of the continuous spinning machine control system of the utility model.

[0027] Among them, 1. treatment roller; 2. dryer; 3. adhesive pump; 4. spinneret; 5. balance; 6. winding head; 7. acid bath chamber; 8. elution assembly; 9. exhaust system; 10. temperature sensor; 11. temperature regulator; 12. pressure sensor; 13. wind speed sensor; 14. rotation speed detection device; 15. broken wire detector; 16. pH detector; 17. sealing cover; 18. hairy wire detector. DETAILED DESCRIPTION

[0028] The present invention is further described in detail below in conjunction with the embodiments, but the implementation manner of the present invention is not limited thereto.

[0029] Example 1

[0030] like Figure 1 and Figure 2 As shown, a continuous spinning machine control system includes a continuous spinning machine and a PLC controller.

[0031] The continuous spinning machine includes a viscose pump 3, an acid bath chamber 7, a spinneret 4, a treatment roller 1, a dryer 2, a balance 5 and a winding head 6. The treatment roller 1 and the dryer 2 are respectively provided with sealing covers 17, and the two sealing covers 17 are respectively provided with exhaust systems 9. The sealing cover 17 outside the treatment roller 1 is provided with a rinsing component 8; the exhaust system 9 includes an exhaust fan and an exhaust duct, and the acid bath chamber 7 is provided with an acid bath pump; the rinsing component 8 includes a rinsing pump,

[0032] The adhesive pump 3, the acid bath pump, the treatment roller 1, the rinse pump, the dryer 2, the balance 5 and the winding head 6 are respectively provided with motors to provide power, and the motors are respectively provided with motor controllers.

[0033] The acid bath chamber 7, the elution assembly 8 and the dryer 2 are respectively provided with a temperature sensor 10 and a temperature regulator 11;

[0034] The adhesive pump 3 is provided with a pressure sensor 12;

[0035] The processing roller 1 is provided with a rotation speed detection device 14;

[0036] The motor controller, the temperature sensor 10, the temperature regulator 11, the pressure sensor 12 and the speed detection device 14 are respectively electrically connected to the PLC controller, and the PLC controller is provided with a human-machine interface;

[0037] The motors of the processing roller 1 and the adhesive pump 3 are synchronous motors, and the motor of the balance actuator 5 is a servo motor;

[0038] The motor controllers of the adhesive pump 3, the processing roller 1, the dryer 2, the acid bath pump, the rinse pump, the winding head 6 and the exhaust fan are frequency converters; the control system is also provided with an alarm device, which is electrically connected to the PLC controller.

[0039] In this embodiment, firstly, safety settings are made, the speed, temperature and pressure values ​​are set, the control program is written, and the PLC controller control system starts working; the viscose pump 3 supplies glue to form glue supply pressure, and a chemical reaction occurs with the acid bath chamber 7 through the spinneret 4 device to convert the liquid into a solid state; the processing roller 1 is used to regularly stretch the silk strips converted into a solid state to form a silk ring, and the silk strips are processed by the elution component 8 during the entire silk ring walking process to produce a desulfurization effect, and high-concentration gas is generated during the silk ring processing process; after the silk strips are desulfurized and cleaned, the silk strips are pulled to the dryer 2 to continue to form a silk ring, and are dried, and low-concentration gas is generated during the silk ring processing process; after drying, the silk strips are pulled to the winding head 6 through the balance system for forming;

[0040] The PLC controller controls the motor speeds of the processing roller 1, the dryer 2, the winding head 6, the balance 5 and the adhesive pump 3 respectively through the motor controller. The data of the speed detection device 14 detects the speed of the processing roller 1 in real time and transmits it to the PLC controller. The PLC controller determines whether the detected value is consistent with the set value. If it is consistent, it operates normally. If it is inconsistent, the PLC controller controls the frequency converter to adjust and the balance servo motor to adjust to the set value and controls the alarm to sound an alarm.

[0041] The PLC controller controls the temperature of the acid bath chamber 7, the elution component 8 and the dryer 2 through the temperature thermostat 11. The temperature sensor 10 detects the temperature in the acid bath chamber 7, the elution component 8 and the dryer 2 in real time and transmits it to the PLC controller. The PLC controller determines whether the detected value is consistent with the set value. If it is consistent, it operates normally. If it is not consistent, the PLC controller controls the temperature thermostat 11 to adjust it to the set value and controls the alarm to sound an alarm.

[0042] The PLC controller controls the pressure in the glue pump 3 by controlling the frequency converter of the glue pump 3. The pressure sensor 12 detects the pressure value in the glue pump 3 in real time and transmits it to the PLC controller. The PLC controller determines whether the detected value is consistent with the set value. If it is consistent, it operates normally. If it is inconsistent, the PLC controller controls the frequency converter of the glue pump 3 to adjust it to be consistent with the set value and controls the alarm to sound an alarm.

[0043] Example 2

[0044] The present embodiment is different from the first embodiment in that, in the present embodiment, the exhaust system 9 further includes a wind speed sensor 13, and the wind speed sensor 13 is electrically connected to the PLC controller. The other structures are the same as those in the first embodiment.

[0045] In this embodiment, independent exhaust systems 9 are respectively arranged in the two sealing covers 17, and the exhaust systems 9 are respectively provided with fans, motors and wind speed sensors 13. The PLC sensor can control the wind speeds in the two exhaust systems 9 respectively, and the wind speed is controlled to be relatively low in the sealing cover 17 on the processing roller 1 side to minimize the amount of waste gas and reduce the processing cost. Wind speed sensors 13 are respectively arranged in the two exhaust systems 9, and the wind speed is controlled to be relatively high in the sealing cover 17 on the dryer 2 side to extract the water vapor as quickly as possible to improve the drying efficiency.

[0046] Example 3

[0047] The present embodiment is different from the embodiment 1 in that, in the present embodiment, a broken wire detector 15 and a hairy wire detector 18 are arranged between the dryer 2 and the balance 5; a pH detector 16 is also arranged in the viscose pump 3, and the broken wire detector 15, the hairy wire detector 18 and the pH detector 16 are electrically connected to the PLC controller respectively, and the other structures are the same as those in the embodiment 1.

[0048] In this embodiment, the hair detector includes a ray generator, a light source base plate, a shadow area calculation module and a sensitivity adjustment device; the silk strip passes between the ray and the light source base plate, and the ray irradiates the silk strip, forming a shadow area on the light source base plate, and the light source base plate is electrically connected to the shadow area calculation module, and the shadow area calculation module is electrically connected to the PLC controller. The silk strip passes between the ray and the light source base plate, and the ray irradiates the silk strip, forming a shadow area on the light source base plate, and the shadow area calculation module calculates the size of the shadow area to form a shadow standard. When the shadow area changes, the shadow area is too large or too small, it is determined that there is hair in the silk bundle; the sensitivity adjustment device adjusts the sensitivity of the hair detector by adjusting the standard shadow area size range.

[0049] The number of filaments and the pH value range in the viscose pump 3 are set through the human-machine interface. During the operation of the continuous spinning machine, when the number of filaments exceeds the preset range, the pH value in the viscose pump 3 is abnormal, and broken filaments occur, the PLC controller controls the alarm to sound an alarm, and the staff manually intervenes to deal with it.

[0050] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A continuous spinning machine control system, Features: Including continuous spinning machine and PLC controller, The continuous spinning machine comprises a viscose pump (3), an acid bath chamber (7), a spinneret (4), a treatment roller (1), a dryer (2), a balance (5) and a winding head (6); the treatment roller (1) and the dryer (2) are respectively provided with sealing covers (17); the two sealing covers (17) are respectively provided with exhaust systems (9); the sealing cover (17) outside the treatment roller (1) is provided with a rinsing component (8); the exhaust system (9) comprises an exhaust fan and an exhaust duct; the acid bath chamber (7) is provided with an acid bath pump; the rinsing component (8) comprises a rinsing pump, The adhesive pump (3), the acid bath pump, the treatment roller (1), the rinse pump, the dryer (2), the balance (5) and the winding head (6) are respectively provided with motors to provide power, and the motors are respectively provided with motor controllers. The acid bath chamber (7), the elution assembly (8) and the dryer (2) are respectively provided with a temperature sensor (10) and a temperature regulator (11); The adhesive pump (3) is provided with a pressure sensor (12); The processing roller (1) is provided with a rotation speed detection device (14); The motor controller, the temperature sensor (10), the temperature regulator (11), the pressure sensor (12) and the rotation speed detection device (14) are respectively electrically connected to the PLC controller.

2. The continuous spinning machine control system according to claim 1, Features: The PLC controller is provided with a human-machine interface.

3. The continuous spinning machine control system according to claim 1, Features: The motors of the processing roller (1) and the adhesive pump (3) are synchronous motors, and the motor of the balance actuator (5) is a servo motor.

4. The continuous spinning machine control system according to claim 1, Features: The motor controllers of the adhesive pump (3), the processing roller (1), the dryer (2), the acid bath pump, the rinsing pump, the winding head (6) and the exhaust fan are frequency converters.

5. The continuous spinning machine control system according to claim 1, Features: The exhaust system (9) further comprises a wind speed sensor (13), wherein the wind speed sensor (13) is electrically connected to the PLC controller.

6. The continuous spinning machine control system according to claim 1, Features: A broken wire detector (15) is provided between the drying device (2) and the balance device (5); the broken wire detector (15) is electrically connected to the PLC controller.

7. The continuous spinning machine control system according to claim 1, Features: A hair detector (18) is provided between the dryer (2) and the balance (5); the hair detector (18) is electrically connected to the PLC controller.

8. The continuous spinning machine control system according to claim 1, Features: A pH detector (16) is also provided in the viscose pump (3), and the pH detector (16) is electrically connected to the PLC controller.

9. The continuous spinning machine control system according to claim 1, Features: The control system is also provided with an alarm device, and the alarm device is electrically connected to the PLC controller.

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