Z148A造型机是大量生产时造上型用的。生产效率较高,机械化程度较完善,是较理想的造型机器。但由于有先天性的缺陷,致使在实际生产中没有发挥应有的作用。其主要问题是造型塌砂。针对这些问题,我们进行了一些改革,获得了一定成效,现将实践中的几点体会述后,供有关兄弟单位参考。 (一)原因分析塌砂现象如图1。左边为一个凹穴铸型,右边为一个吊砂铸型。图上所示有两种塌砂现象,而造成塌砂的原因是各有不同的。对于圆周塌砂,完全是机器反跳造成的。反跳,这是Z148A造型机在震实过程中最大缺点之一,尤其以漏板架最为严重。当放上砂箱后,砂箱就跟着反跳,砂箱的反跳造成了砂型的型砂隔 Z148A molding machine is made when used in a large number of production. Higher productivity, better mechanization, is the ideal shape machine. However, due to congenital defects, resulting in the actual production did not play its due role. Its main problem is modeling sand collapse. In response to these problems, we conducted some reforms and achieved some success. Now, we will give some reference to relevant fraternal units after we have made some explanations in practice. (A) Analysis of Causes Sand collapse phenomenon shown in Figure 1. On the left is a cavity mold and to the right is a sand mold. There are two kinds of sand collapse phenomenon shown in the figure, and the reasons for sand collapse are different. For the circumferential sand collapse, is completely caused by the rebound of the machine. Anti-jump, which is Z148A molding machine in the shock of one of the biggest shortcomings, in particular, the most serious leakage plate rack. When placed in the sand box, the sand box followed the rebound, sand box caused by the sand-shaped sand bouncing off