Shanghai Daoqin Plastics Co., Ltd.

         extrusion machine is commonly used plastics machine 械之一, that 么平行 and di screw plastics machine 械 extrusion machine has what different 呢?

        1, 直径: di screw same, di screw small 端直径 and large 端直径 different;

        2, 同心距: di screw in same, di screw 两轴线呈夹角, in dimensions large small 沿轴线变化;

        3, long ratio: di 螺(L/D) is screw has separation long degree and screw outer ratio, di screw (L/D) is screw has separation long degree and large 端直径 and small 端直径 平均 value ratio.

         from above 几点, can 清晰 看出平行 and di screw extrusion machine most significantly different is screw machine 筒 几何形状 different, from 而引发出 structure and property can upper more 差异, 虽两者 features different, has advantages.

        平行 di screw extrusion machine due to to screw in dimensions small made, in gears in, to 予支撑两输出轴 径 toward bearings and force bearings and related gears very has 限, tube/pipe design 者费尽脑汁, 但也无 method solution bearings can force, gears 模数, small, screw 尾部直径 small 现实, resistant force 差 结果. 输出扭距 small, resistant negative can force 差, is di screw extrusion machine most is significantly defect. long ratio can property is di screw advantages, it can according to molding conditions 差异, can increase large and decrease small long ratio 以适应 plastics processing process requirements, can expand 展平行 di screw suitable scope/range, this 点锥形 di screw extrusion machine is difficult to.

        锥形 di screw extrusion machine 两根圆锥形 screw water 平排列, 两轴线呈一夹角装入 machine inner, 两轴线 in 心距由 small toward large 端逐渐变 large, make gears 箱两输出轴 has relatively large in 心距, this system in gears and gears and this gears 轴 径 toward bearings and force bearings has relatively large 安装空间, it can plant/unit relatively large specifications toward bearings and force bearings, 各传动轴 has meet/satisfy 传递扭距 轴径, therefore large as 扭距, large can force is di screw extrusion machine large features. this 点平行 di screw extrusion machine is method ratio 拟. di screw extrusion machine bearings di screw extrusion machine as 时, melt in screw 头部会 generate non large pressure (machine pressure), pressure large small usually in 14MPA left right, has 时甚至 high 达30MPA above, this type of pressure for screw formed strong/high large toward force, 顶住推 force is bearings function.

        平行 di screw extrusion machine 因受两 screw in small made, bearings can force and its large small has 关, large can force large, use large 直径 止退 bearings is can can. this 矛盾局面 usually is use small 直径止退 bearings 串联起 function, 共同承受 strong/high large toward force, use this type of methods core issues is must 每 推 force bearings 承受 载荷 need uniform same, 否则, large bearings ultra- 载而提 front bad, its 应承受 载荷 add to other bearings upper make its ultra- 载, this type of property bad its rear is non heavy. can 看出平行 di screw extrusion machine system structure comparison complex, and di screw extrusion machine system structure versus ratio, gears manufacturing cost high, repair relatively complex.

        锥形 di screw extrusion machine 因两根 screw has 夹角, therefore gears 箱两输出轴 has relatively large in 心距, in gears in plant/unit front rear 交错排列 relatively large force 调心滚珠 bearings, retardant machine pressure formed toward force, its features can force large, gears manufacturing cost low, repair relatively is 方便.

         for/regarding use 户 说, di screw plastics machine 械 extrusion machine is very important, different type type di screw extrusion machine has different property can and application combined, therefore, must need 弄清楚 various di screw extrusion machine property can and application combined. 例如, combined toward di screw extrusion machine its speed high, speed rate large, combined screw, it suitable for easy hot separation understanding polymer modified ---- blending, filling, fiber reinforcement and material material reaction extrusion. 例如, combined toward di screw extrusion machine, its has good mixed combined function, its most large features is pvc powder material molding processing. 如改变 screw structure, also can used for other material material molding processing, it strong/high still is PVC molding processing. according to plastics dimensions large small, extrusion amount, again extrusion amount selection di screw extrusion machine specifications. in plastics processing molding process conditions basic same lower, di screw extrusion machine can relatively large machine pressure, di screw extrusion machine can relatively small machine pressure.