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VT-HNC100-1-23/W-08-0-0 R900955334邏輯模擬量順序卡件

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VT-HNC100-1-23/W-08-0-0 R900955334邏輯模擬量順序卡件

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VT-HNC100-1-23/W-08-0-0 R900955334邏輯模擬量順序卡件 VT-HNC100-1-23/W-08-0-0 R900955334邏輯模擬量順序卡件 VT-HNC100-1-23/W-08-0-0 R900955334邏輯模擬量順序卡件
VT-HNC100-1-23/W-08-0-0 R900955334邏輯模擬量順序卡件
雙眼并條機(jī)的自調(diào)勻整系統(tǒng)
采用二套勻整裝置，二眼分別進(jìn)行有效控制。其勻整裝置可配瑞士烏斯特USG或國產(chǎn)航空總公司613所BYD，二者性能上均能滿足勻整范圍。
(1)控制一羅拉的主電動(dòng)機(jī)是由一個(gè)由變頻器驅(qū)動(dòng)的變頻電動(dòng)機(jī)，這樣由PLC通過串行通信的方式對(duì)其進(jìn)行速度控制，可根據(jù)需要實(shí)現(xiàn)起動(dòng)的無級(jí)變速。
(2)二羅拉與三羅拉通過齒形帶相連，完成有著固定牽伸比的預(yù)牽伸，二羅拉由一個(gè)伺服電動(dòng)機(jī)進(jìn)行拖動(dòng)，同時(shí)在一羅拉主軸上設(shè)置一個(gè)編碼器，該編碼器與拖動(dòng)二羅拉的伺服電動(dòng)機(jī)控制器相連，通過對(duì)該控制器的參數(shù)的設(shè)置，利用其電子齒輪的功能，使得無論一羅拉速度高低，二羅拉與一羅拉的牽伸比始終保持設(shè)定的一個(gè)比例關(guān)系。
(3)拖動(dòng)二羅拉的伺服電動(dòng)機(jī)由PLC通過一定的控制算法，經(jīng)過與控制器的串行通信實(shí)現(xiàn)其調(diào)速。
(4)凹凸檢測(cè)羅拉通過一個(gè)放大裝置，將位移放大，還安裝有一個(gè)位移傳感器。同時(shí)在檢測(cè)羅拉的旁邊放置一個(gè)脈沖信號(hào)發(fā)生器，當(dāng)檢測(cè)羅拉轉(zhuǎn)過一定的角度，即棉條經(jīng)過一定的位移后，發(fā)出一個(gè)脈沖，實(shí)現(xiàn)其定長檢測(cè)控制，克服以前定時(shí)檢測(cè)在速度不穩(wěn)定時(shí)，計(jì)算勻整延時(shí)困難的不足。脈沖信號(hào)發(fā)生器通過一個(gè)串口和PLC實(shí)現(xiàn)通信。 (5)在整個(gè)并條機(jī)的過程控制、故障診斷、紅外線自停及簡單的日常數(shù)據(jù)處理仍由PLC實(shí)現(xiàn)，由PLC統(tǒng)一協(xié)調(diào)整個(gè)自調(diào)勻整系統(tǒng)。
勻整系統(tǒng)參見圖1。
凹凸羅拉
伺服電機(jī)
齒輪箱
位移傳感器
轉(zhuǎn)速器
變速傳感器
喇叭口
前置放大器
壓輥速度傳感器
5.電氣控制系統(tǒng)分析與設(shè)計(jì)
5．1電氣控制選型
選用臺(tái)達(dá)可編程控制器PLC，觸摸屏控制，實(shí)現(xiàn)人機(jī)對(duì)話。觸控式控制面板能顯示相關(guān)運(yùn)轉(zhuǎn)數(shù)值，能在運(yùn)轉(zhuǎn)狀態(tài)下設(shè)定輸出速度，能對(duì)異常警報(bào)斷電記憶，方便管理。方便調(diào)整及檢測(cè)。采用變頻調(diào)速，減少皮帶輪變換，解決開關(guān)車時(shí)瞬間條干惡化。
在牽伸機(jī)件中，前羅拉控制采用5.5KW變頻器;電磁剎車方式;
吸風(fēng)電機(jī):0.75KW.一般直接驅(qū)動(dòng)無須變頻器,啟動(dòng)可能有一定的噪音.
后羅拉控制,大多設(shè)備并無控制,前后羅拉位置相對(duì)固定,需要機(jī)械調(diào)整羅拉支架滑塊.現(xiàn)在也有在后羅拉處用一顆1KW
伺服控制
后羅拉的位置，增加1個(gè)旋編檢測(cè)位置.
5.2自動(dòng)換桶
自動(dòng)換桶并條機(jī)提高自動(dòng)化程度能減輕操作工的勞動(dòng)強(qiáng)度，普遍采用定長，主機(jī)停車，積極式斷條，換桶電機(jī)啟動(dòng)經(jīng)機(jī)械傳遞回轉(zhuǎn)推桿。推出滿桶，送進(jìn)空桶并定位，主機(jī)啟動(dòng)后完成換桶過程。
滿桶后，圈條盤出口自動(dòng)定位，主機(jī)停車，依次換桶電機(jī)啟動(dòng)帶動(dòng)弧形推桶板推出滿桶、斷條、推桶板退回；轉(zhuǎn)臂電機(jī)啟動(dòng)使轉(zhuǎn)臂向下旋轉(zhuǎn)90°；推動(dòng)電機(jī)再啟動(dòng)，通過轉(zhuǎn)臂將滿桶繼續(xù)外推；補(bǔ)桶電機(jī)通過傳動(dòng)由撥盤將空桶送至預(yù)定位置，撥盤退回；推動(dòng)電機(jī)經(jīng)轉(zhuǎn)臂將空桶拉到底盤上；轉(zhuǎn)臂電機(jī)使轉(zhuǎn)臂上旋90°，后主電機(jī)啟動(dòng)。完成全部換桶過程只需30多秒。該過程由PLC控制，保證了換桶的可靠性。
5。3潔與吸風(fēng)
（1）上清潔形式有回轉(zhuǎn)絨套、金屬鋼棒、浮動(dòng)清潔棒、清潔桿等。通過上吸風(fēng)將其聚集的花衣吸人棉箱，達(dá)到清潔上羅拉的要求。
（2）下清潔形式有丁晴刮圈、單皮圈往復(fù)、橡皮片等，并通過下吸風(fēng)口將花衣吸入風(fēng)箱，能有效的除去棉條中的雜塵。
（3）吸風(fēng)裝置均獨(dú)立設(shè)計(jì)、使用，自成系統(tǒng)，配備1．5KW左右的2級(jí)電機(jī)，提高了傳動(dòng)的可靠性。吸棉箱設(shè)計(jì)有積極式自動(dòng)剝棉裝置，并附有貯棉倉；FA311增加刮棉箱；也有采用渦流排風(fēng)方式。均使金屬過濾網(wǎng)表面不積花衣和粉塵，達(dá)到氣流暢通，滿足吸風(fēng)要求。
5。4喂入與自停
（1）導(dǎo)條方式多數(shù)機(jī)型采用高架積極式，高度可調(diào)。導(dǎo)條羅拉已由一端支撐發(fā)展為雙支撐，減少振動(dòng)、適應(yīng)高速。導(dǎo)條羅拉由鍍鉻光面向鋁合金溝槽發(fā)展，精度提高，重量減輕。Autoleveller system of double eye drawing frame
Two sets of leveling devices are used to effectively control the two eyes. Its homogenizing device can be equipped with USG of Ulster, Switzerland, or BYD of 613 Institute of China National Aviation Corporation, both of which can meet the homogenizing range in performance.
(1) The main motor controlling a roller is a variable frequency motor driven by a frequency converter. In this way, PLC can control its speed through serial communication and realize stepless speed change for starting as required.
(2) The two rollers are connected with the three rollers through the tooth shaped belt to complete the pre drafting with a fixed drafting ratio. The two rollers are driven by a servo motor. At the same time, an encoder is set on the main shaft of one roller. The encoder is connected with the servo motor controller that drives the two rollers. By setting the parameters of the controller and using the function of its electronic gear, The drafting ratio of two rollers and one roller always keeps a setproportional relationship.
(3) The servo motor driving two rollers is adjusted by PLC through certain control algorithm and serial communication with the controller.
(4) The concave convex detection roller amplifies the displacement through a magnifying device, and a displacement sensor is also installed. At the same time, a pulse signal generator is placed next to the detection roller. When the detection roller turns a certain angle, that is, after the sliver passes a certain displacement, it sends a pulse to realize its fixed length detection control, overcoming the shortcomings of the previous timing detection when the speed is unstable and calculating the leveling delay. Pulse signal generator communicates with PLC through a serial port. (5) The process control, fault diagnosis, infrared auto stop and simple daily data processing of the whole drawing frame are still realized by PLC, and the whole autoleveller system is coordinated by PLC.
The levelling system is shown in Figure 1.
Concave convex roller
servo motor
Gearbox
Displacement sensor
Tachometer
Variable speed sensor
Bell mouth
Preamplifier
Pressure roll speed sensor
5. Analysis and design of electrical control system
5.1 Selection of electrical control
Delta programmable controller PLC and touch screen control are selected to realize man-machine dialogue. The touch control panel can display the relevant operation values, set the output speed under the operation state, and memorize the abnormal alarm and power off for convenient management. It is convenient for adjustment and detection. Frequency conversion speed regulation is adopted to reduce the change of belt pulley and solve the problem of instant yarn deterioration when turning on and off.
In the drafting machine, 5.5KW frequency converter is used for front roller control; Electromagnetic braking mode;
Suction motor: 0.75KW. Generally, direct drive does not require frequency converter, and there may be some noise when starting
The rear roller is controlled. Most of the equipment has no control. The position of the front and rear rollers is relatively fixed. The slider of the roller bracket needs to be adjusted mechanically. Now, a 1KW roller is also used at the rear roller
servo control
Add 1 spinning detection position to the position of the rear roller
5.2 Automatic barrel change
The improvement of automation of automatic barrel changing drawing frame can reduce the labor intensity of operators. It generally adopts fixed length, main machine shutdown, active bar breaking, barrel changing motor startup and mechanical transmission of rotary push rod. Push out the full barrel, feed the empty barrel and locate it, and complete the barrel change process after the host starts.
After the barrel is full, the exit of the coiling reel is automatically positioned, the host machine stops, the barrel changing motor starts in turn to drive the arc bucket pushing plate to push out the full barrel, broken bars, and bucket pushing plate back; The rotary arm motor starts to rotate the rotary arm 90 ° downward; Push the motor to restart, and continue to push the full barrel outward through the rotary arm; The bucket replenishing motor drives the empty bucket to the preset position by the dial, and the dial returns; Push the motor to pull the empty barrel onto the chassis through the rotary arm; The rotary arm motor rotates the rotary arm upward by 90 °, and finally the main motor starts. It only takes more than 30 seconds to complete the whole barrel changing process. The process is controlled by PLC to ensure the reliability of barrel change.
5。 3 Cleaning and air suction
(1) The upper cleaning forms include rotary pile sleeve, metal steel rod, floating cleaning rod, cleaning rod, etc. The flower clothes gathered by the upper suction are sucked into the cotton box to meet the requirements of cleaning the upper roller.
(2) The lower cleaning forms include Ding Qing scraper ring, single leather ring reciprocating, rubber sheet, etc., and the floral clothes are sucked into the bellows through the lower suction port, which can effectively remove the dust in the cotton sliver.
(3) The air suction devices are designed and used independently, and are self-contained. They are equipped with a two-level motor of about 1.5KW, which improves the reliability of transmission. The cotton suction box is designed with a positive automatic cotton stripping device and a cotton storage bin; FA311 added cotton scraper box; Vortex ventilation is also used. All of these make the surface of the metal filter screen free of flower clothes and dust, so as to achieve smooth airflow and meet the requirements of air suction.
5。 4 Feeding and automatic stop
(1) Most of the models adopt the overhead positive type with adjustable height. The guide roller has developed from one end support to double support, reducing vibration and adapting to high speed. The guide roller is developed from chrome plating to aluminum alloy groove, with improved accuracy and reduced weight.