The utility model discloses a telescopic pressure plate, which aims to provide an energy saving and improving efficiency is also pressing the rotation radius can increase the feeding amount of a pressing device, which is characterized by: the pressure of a plate are respectively installed on the left and right sides of a sleeve or tube with a roller, by a spring or spring will hold its inside and outside expansion, and were installed with the walking wheel in front and rear sides of the pressure plate close to the head side, running around the pressure plate are symmetrical with each other from top to down and go within its immediate distance from far to near to the docking of raw materials will be closed to each other, goes on make their back, back in the spring is compressed or spring is stretched beyond center horizontal line after each wheel slip along track, close to TDC and track off the rise immediately reset in the spring or the effect of the spring Complete a work cycle. The upward elongation allows more pushing of the raw material; the docking prevents the return of the material from being closed; the retraction is retracted to reduce rotational resistance.
【技术实现步骤摘要】
本技术涉及建材行业中的砖瓦生产企业在制做砖瓦坯胎中选用的一种机械设备其中的一个零配件，更确切更具体地讲是涉及将制砖瓦原料压入挤出机其缸套中的压料板。技术背景螺旋挤出机的挤出效率一般只有0.2～0.3，很难达到0.4，换言之即依据前后两相邻螺旋叶其空间容积，每运转一周将原料向前推移一个螺距，其推出量应等于一个空间的容积，而事实相差很远，其主要原因不外乎一是因出口即机口断面远小于后边原料输送通道即缸套的断面而形成一定的阻力，二是无法做到使原料完全填充运转中的前后螺旋叶片空间，这是由于各螺旋叶片为前后连接安装在同一根水平状主轴其外缘的螺旋管的四周，落下进入料斗的原料既有螺旋叶片的阻挡，又有中心螺旋管的阻拦，特别是粘性重和湿度大及较粗和成团的原料更难于进入相邻两螺旋叶片之间的空位。为了多进料，而在其上位单边或左右双边安装压料辊筒或压料板，在旋转中将原料往下压，尽管有一定效果，但要想填满上下左右空间却无能为力。压料板在真空螺旋挤出机和普通螺旋挤出机中所处位置与做功原理及其结构如图1至图3所示：由动力（图中未示出）带动减速机4连及主轴3和...
【技术保护点】
一种伸缩式压料板，分左右两组分别安装在各自中心转轴上，其特征是：左右两组各伸缩式压料板在周线上所处位置相互对应，各压料板两头內边安装有弹簧（13）或拉簧（19），各压料板内边安放在管套中或辊筒内，外边两头侧面分别安装有走轮，两组压料板之间其旋转中心水平线以下双边分别安装有非完整的环形轨道彼此反方向延伸至各自上止点的前后处。
【技术特征摘要】
1.一种伸缩式压料板，分左右两组分别安装在各自中心转轴上，其特征是：左右两组各伸缩式压料板在周线上所处位置相互对应，各压料板两头內边安装有弹簧（13）或拉簧（19），各压料板内边安放在管套中或辊筒内，外边两头侧面分别安装有走轮，两组压料板之间其旋转中心水平线以下双边分别安...
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