A method to monitor and control the temperature of the heat producing equipment, the equipment from the current supply and periodically and the working process of the implementation of combined production of heat, for example, the surface of thermoplastic outer fusion to seal in the packaging production process, the equipment performance for the resistance element resistance material of one or more dependent in the temperature, preferably heating or heating body, provide heat current resistance element in each work cycle, in each work cycle are divided by current controlled switch device (6) controls the current pulse length, the method is characterized in that the pulse in the current (17 the gap between the pulse) (18), (2) the components produced by measuring the current pulse (19), the measurement of the current pulse constant current and current strength is known, and in Resistive element (2) generates a voltage, the voltage or the voltage associated with the potential value of forming a resistive element (2) relative temperature measurement; voltage potential value in said regulator device with the standard potential of the preset values compared to the standard value and potential value; Determination of the difference between being in a certain way to control driving device for controllable current switch (9), which corresponds to a preset standard value and was determined by measuring the current in a resistor element respectively (2) between the voltage generated between the comparison of the results to increase or decrease the current pulse length.
【技术实现步骤摘要】
本专利技术涉及一种监视和控制产热设备的方法,该设备由电流供应并周期性地与工作过程的执行相结合来产生热量,例如,在包装生产过程中最好通过使热塑性外层表面熔合来密封,这些设备表现为一个或多个具有温度依赖性的电阻材料的导电电阻元件,最好为加热条形,在每个工作周期中提供给电阻元件的产热电流都被分成若干个电流脉冲,脉冲的长度由一个可控电流开关装置来控制。
技术介绍
在包装工业中,与包装生产相结合,常常借助于所提供的热和压力将包装材料的表面密封或与另外一个融合。这样的密封常常使用所谓的热封夹,即成对可移动的装置,要密封的包装材料表面被容纳在两者之间并被压在一起。在其中至少一个热封夹中有放热元件,向互相压在一起的热塑性表面提供足够的密封热量,使两者融合在一起,形成牢靠且耐用的密封。如果提供的热量不够的话,密封将不牢靠或不耐用,过多的热能则可能会导致不可控制的密封区域,而在太高的温度下提供的热能将会导致使材料变色这样形式的燃烧损坏,在最坏的情况下,则可能导致烧焦或炭化。在包装或装填机器中,为提高生产能力,有若干对独立的密封夹在工作,还会出现这样的问题,即不同夹中的不同温度或不同供应数量的热能会给出不同的密封效果。专利技术概述因此,在本领域上有必要有一种技术解决方案,以解决监视和控制密封夹中的供热和温度以及以一定的方式管理不同的密封夹使它们给出一致的、均匀的密封效果这个问题。本专利技术提供了这个问题的解决方案,其特征在于,在流经前面说过金属元件的上述电流脉冲之间的脉冲间隙,产生恒定的且电流强度已知的测量电流脉冲,这些测量电流脉冲在电阻元件间产生电压,与该电压有关的电压或 ...
【技术保护点】
【技术特征摘要】
【专利技术属性】
技术研发人员:C·英格维特,
申请(专利权)人:利乐拉瓦尔集团及财务有限公司,
类型:发明
国别省市:
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