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1. 发明授权

US4943706A Method and apparatus for fusing thermoplastic materials 失效
标题翻译：用于融合热塑性材料的方法和装置
公开(公告)号：US4943706A
公开(公告)日：1990-07-24
申请号：US182406
申请日：1988-04-18
申请人： Lucian H. Lyall , Karol Z. Renau
发明人： Lucian H. Lyall , Karol Z. Renau
IPC分类号： B29C65/00 , B29C65/34 , H05B3/44
CPC分类号： B29C65/342 , B29C66/1122 , B29C66/1142 , B29C66/5221 , B29C66/5229 , B29C66/91221 , B29C66/91315 , B29C66/91411 , B29C66/91443 , B29C66/91643 , B29C66/91655 , B29C66/961 , H05B3/44 , B29C65/3476 , B29C66/9121 , B29C66/919 , B29C66/94 , B29C66/949 , B29C66/9592
摘要： An apparatus and method for attaining fusion temperature at substantially the same time throughout an interface between thermoplastic articles by the controlled application of heat. The method includes providing a sensed temperature signal corresponding with the temperature at the interface, generating a desired temperature signal (such as an analog ramp signal which increases linearly with time) corresponding with a predetermined heat application rate which causes the temperature at substantially all portions of the interface to rise substantially uniformly, providing a heat control signal corresponding with any difference between said signals, and applying heat to the interface at a rate determined by the heat control signal to achieve fusion temperature throughout the interface at the same time. The apparatus includes a heater coil to apply heat to the interface, a sensor to provide the sensed temperature signal, a generator to provide the desired temperature signal, and a differential amplifier to provide the heat control signal. Fault detection circuits stop the process if a heater fault, a temperature sensor fault, or a power supply fault is detected. Testing circuits are included to test the apparatus for proper operation before commencing fusion.
摘要翻译：一种用于通过受控施加热量在热塑性制品的界面处基本上同时实现融合温度的装置和方法。该方法包括提供对应于界面处的温度的感测温度信号，产生对应于预定的热施加率的期望温度信号（例如随时间线性增加的模拟斜坡信号），该预定热施加率导致基本上所有部分的温度该界面基本均匀地升高，提供对应于所述信号之间的任何差异的热控制信号，并且以由热控制信号确定的速率向接口施加热量，以在整个界面同时实现熔化温度。该装置包括用于向接口施加热量的加热器线圈，用于提供感测到的温度信号的传感器，提供所需温度信号的发生器，以及提供热控制信号的差分放大器。如果检测到加热器故障，温度传感器故障或电源故障，故障检测电路会停止该过程。包括测试电路以测试设备在开始融合之前的正确操作。

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