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压制人造板、绝缘板的上举式多层热压机以及大中型多层平板硫化机的液压系统原理都是由泵源向一个或多个柱塞缸供油,使其上举下压。这类系统的流量一般在200升/分至1200升/分范围内,压力在140公斤力/厘米~2 至260公斤力/厘米~2范围内。柱塞的下降复位是依靠所举热板重量和柱塞自重。其基本动作是:柱塞快速上举——热板用合升压——保压——降压至某值——卸压至零——柱塞下降落板——原位停止。以前,通常有以下两种液压系统来实现上述动作,见图1、图2。它们各有其优缺点。图1所示系统,优点是:系统较简单,只
Suppression of wood-based panels, insulation board on the lifting of multi-layer pressing machine and large and medium-sized multi-plate vulcanizing machine hydraulic system principle is the pump source to one or more plunger cylinder oil, so that the pressure on the move. The flow rate of such systems is typically in the range of 200 liters / minute to 1200 liters / minute and the pressure is in the range of 140 kgf / cm 2 to 260 kgf / cm 2. The plunger’s drop reset relies on the weight of the hot plate and the weight of the plunger. The basic movements are: Plunger fast lifting - hot plate with the boost - dwell - buck to a certain value - the pressure relief to zero - plunger drop landing - stop in situ. In the past, the following two types of hydraulic systems were commonly used to accomplish this. See Figure 1 and Figure 2. They each have their own advantages and disadvantages. The system shown in Figure 1 has the following advantages: The system is simple and only