Make control of servo of cut of bag machine fixed length

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  • source:JANEZH CNC Machining
The precision control that the crucial technology that makes bag of machine depends on how assuring to cut off length reachs those who produce rate to rise. Make bag of machine inchoately all use brace fork, sector gear and surmount clutch orgnaization, adjust by brace machinery bag is long, by electrical micro-machine the prejudicial position on face of gear of correction rocker covering of the fan is made locating correction dominate an end in order to obtain fixed position, but no matter this orgnaization is make or have bag of long setting very troublesome, and traversal speed is slow, precision of fixed length cut is not tall. Rise as what make dc servo technology, two problems had the manufacturing rate that makes bag of machine and precision of product fixed length better solution. The systematic block diagram of plan is as follows: If the film that need fixed length cuts off pursues 2. Control target of the system is a requirement every time cutting tool all is in mark among, ± of excel of fixed position precision 0.

5mm. Make bag of machine can be divided on craft seal for heat cut into parts cut and fixed length drawing two kinds of movements, general these two kinds of movements take an in part each control bag of cycle and each other lock. Graph one in, m gives priority to transmission asynchronous electric machinery, by control of MFC series transducer, through linkage mechanism will advocate the fluctuation move back and forth that the whirligig of electric machinery changes into two heat to seal group of very hot sword and cutting tool moves point-blank. NCM1, NCM2 is to be used at fixed length pilot to communicate servo electric machinery, GM1, GM2 is photoelectricity coder, detect the act that the sensor of type of baric float roller of filmy tension uses at coordinating NCM2 electric machinery, in order to make sure the filmy tension between around drawing roller is constant, this is the premise that makes sure precision of fixed length cut and heat seal quality. SK is to be used at detecting to heat up a frame to be in the stage rises or depressive switch measures photoelectricity sensor, if the graph is shown 3 times,its output condition. GK is to detect film pressworks the sensor of photoelectricity of quantity of reflection formula switch of the mark, should detect when spot falls on the mark, if pursue,2 medium B are nodded, output low n, should fall in the mark two side if A, C is tall n when 2 o'clock. In addition before of foreword for makings link (graph one in did not draw) made sure feed heats up a film of 1 to be in constant tension condition. The main job process that controls bag of machine to control a system is as follows: 1. M electric machinery runs continuously, heat seals frame and cutting tool to make periodic move back and forth move up and down. 2. When heat seals frame and cutting tool stage to rise, SK=0, the pulse number that grows a correspondence in the bag that NCM1, NCM2 occupies systematic set during this reachs his to rise fall frequency rule undertakes fixed length drawing is controlled, and control action makes every time (a bag is long) after drawing ends, the spot as it happens of GK falls in the mark intermediate position. 3. Seal frame and cutting tool to press when heat when falling, the film that takes to just sending namely undertakes heating up sealing, at the same time will already by drawing roller missive a bag grows cut into parts cut finished product, right now SK=1, NCM1, NCM2 quits movement. 4. When cutting tool cuts cut bag number into parts to obtain the quantity of set, start transmission belt to send its by electric machinery M1. The bag number that makes the manufacturing rate of bag of machine can press minutely production is metric, also can come with the product line career that makes bag of machine metric. The linear velocity that makes bag of machine at present is 45m/min commonly. CNC Milling CNC Machining