Strip material area-meter

An area-measuring device for measuring area of strip materials being reeled on a reeling machine, comprising

• a process blocking circuit means having three inputs and an output for inhibiting operation of said area-measuring device in the case of breakage of and subsequent cutting off the material being reeled on;
• length-meter having an output connected to one of said inputs of said process blocking circuit;
• strip breakage-sensing means having an output connected to the other input of said inputs of said process blocking circuit, and a second output;
• cutting means for cutting off the material from the roll in the case of breakage of the material being rolled up and having an output connected to the third input of said process blocking circuit, and two inputs one of which two inputs is connected to said output of said length-meter, and the second input is connected to said second output of the breakage-sensing means;
• a first two-position switch having an input lead and first and second position output leads, the first position output lead being connected to said output of said process blocking circuit means;
• a common clearing line;
• an intermediate memory counter having a clearing input connected to said common clearing line, a count input connected to said input lead of said first two-position switch, and outputs;
• a first controlled frequency divider having an output, control inputs connected by positions to said outputs of said intermediate memory counter, and a count input;
• an overflow blocking unit having inputs connected to said outputs of said intermediate memory counter, and an output;
• a reference frequency generator having an output connected to said count input of said first frequency divider;
• a second controlled frequency divider having plural control inputs, a count input connected to said output of said reference frequency generator, and an output;
• an AND circuit having an output connected to said second position output lead of said first two-position switch, and two inputs one of which is connected to said output of said overflow blocking unit, and the second one connected to said output of said reference frequency generator;
• plural NAND logic circuits equal in number to the number of said control inputs of said second controlled frequency divider, and each having first and second inputs and outputs connected to respective control inputs of said second controlled frequency divider;
• a second two-position switch having first and second position output leads, the second position output lead connected to said first inputs of each said NAND circuits, with the first position output lead being grounded;
• a correction input unit having outputs connected to said second inputs of each said NAND circuit;
• a time interval generator having an input connected to said output of said second controlled frequency divider, at least one control input and two outputs, one of which outputs serving as a clearing output;
• at least one setting unit having an output connected to the corresponding control input of said time interval generator;
• a coincidence circuit having one input connected to said output of the first controlled frequency divider, and a second input connected to said output of said time interval generator, and an output;
• a counter unit having an input connected to said output of said coincidence circuit, and a clearing input connected to said output of said time interval generator;
• a control signal generator having an input and two outputs, and comprising:
• a scaling unit having an input which is the input of said control signal generator and connected to said output of said length-meter, and an output;
• a first code-to-digit converter having control inputs and a clearing input connected to said common clearing line, an information input connected to said output of said scaling unit, and an output which serves as an output of said control signal generator and which is adapted for being connected to an actuating mechanism for stopping the reeling mechanism of the machine;
• a second code-to-digit converter having control inputs and a clearing input connected to said common clearing line, an information input and an output serving as an output of said control signal generator and adapted for being connected to an actuating mechanism for braking the reeling mechanism of the machine;
• a 2 AND-2 AND-OR circuit having two AND gates each with a pair of inputs, one of the inputs of the first input pair connected to said output of said scaling unit, and an OR gate connected to be driven by said two AND gates and having a output;
• an RS flip-flop circuit having an S input connected to said common clearing line, an inverse output connected to the second input of the first input pair of said 2 AND-2 AND-OR circuit, and a direct output connected to one of the inputs of the second input pair of said 2 AND-2 AND-OR circuit;
• an AND circuit having two inputs, one of which inputs is connected to the direct output of said RS flip-flop circuit, the second being input connected to the input of said scaling unit, and an output connected to the second input of the second input pair of said 2 AND-2 AND-OR circuit;
• a counter unit having an input connected to the output of said AND circuit, and an output connected to the R input of said RS flip-flop circuit;
• a switching circuit having two inputs, one of which inputs being connected to said common clearing line, with the second input being connected to the output of the second code-to-digit converter, and outputs;
• a number value input unit having enabling inputs connected to said outputs of said switching circuit, and outputs one of which outputs being connected to said control inputs of said first code-to-digit converter, with the other outputs connected to the control inputs of said second code-to-digit converter.