发明名称 |
Method and apparatus for controlling the thickness of extruded stock |
摘要 |
The thickness of a cut length of a continuously extruded elastomer is controlled by sampling the weight of a section of the continuous extrusion at a running-weigh-scale each second; computing one-minute averages of the running-weigh-scale samples and storing "A" to "n" of the averages where "A" is the newest and "n" is the oldest stored average; sampling the extruder motor power draw each second; computing one-minute averages of the power draw and storing "B" to "m" of the averages where "B" is the newest and "m" is the oldest stored average; comparing the newest to the oldest power draw average to obtain a difference between the two and multiplying the difference by a constant indicative of the type of elastomeric material being processed through the extruder to obtain a power-draw deviation signal; sampling the weight of a cut length of material extrusion at a check-weigh-scale; comparing the check-weigh-scale value to the oldest "n" stored running-weigh-scale one-minute average and to the power draw deviation to obtain a targeted running-weigh-scale average; comprising the targeted running-weigh-scale average to the newest "A" stored running-weigh-scale one-minute average to obtain a deviation from the targeted value if one exists; and converting the deviation from the targeted running-weigh-scale value to a control signal for increasing or decreasing the speed of a take-away belt positioned at the extruder exit orifice to vary the thickness of the extrusion in accordance with the deviation control signal and the speed of the belt.
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申请公布号 |
US4156913(A) |
申请公布日期 |
1979.05.29 |
申请号 |
US19780903329 |
申请日期 |
1978.05.05 |
申请人 |
GOODYEAR TIRE & RUBBER CO THE |
发明人 |
APICELLA, ANTHONY M JR |
分类号 |
B29B7/00;B29C47/00;B29C47/34;B29C47/40;B29C47/92;B29D30/52;G01G11/12;G05D5/03;(IPC1-7):G06F15/46 |
主分类号 |
B29B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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