机械5

摘要 随着科学技术的进步和社会的发展，粉末螺杆灌装机广泛应用于食品、冶金、化工农药等行业，近年来食品行业高速发展，填充机械超过一半用于食品包装。尽管使用自动化设备提高了包装的效率，并降低了劳动力成本，但通过仔细研究包装生产数据，我们发现包装的精度却逐年下降。本文在PLC控制器的基础上，介绍了以步进电机作为驱动，螺杆进给为基础的粉剂填充机构，既提高了包装效率，还提高了填充的稳定性。 本文先介绍了粉剂填充机构的机械结构和工作原理，填充机采用了步进电机驱动螺杆进行定量填充，螺杆式粉剂填充机的结构简单，效率高，主要原理是通过控制螺杆的旋转一周填充的体积和旋转的时间来控制填充粉剂的重量，通过选择步进电机，电机的转速由输入的脉冲频率决定，因此可以通过改变输入脉冲的频率来改变填充的重量，达到满足多种产品的填充要求。这种填充机不仅效率高，而且极大地降低了劳动力成本，减少了有毒有害粉剂颗粒对劳动者的伤害，精度也能达到一定要求。 关键词:粉剂填充机；螺杆；PLC；步进电机 Abstract With the adva
nceme
nt of scie
nce a
nd tech
nology a
nd the developme
nt of society, powder screw filli
ng machi
nes arewidely used i
n food, metallurgy, chemical pesticides a
nd other i
ndustries. I
n rece
ntyears, the food i
ndustry has developed rapidly, a
nd more tha
n half of the filli
ng machi
nery is used for food packagi
ng. Although the use of automated equipme
nt has improved the efficie
ncy of packagi
ng a
nd reduced labor costs, through careful study of packagi
ng productio
n data,we fou
nd that the accuracy of packagi
ng is decreasi
ngyear byyear. Based o
n the PLC co
ntroller, this paper i
ntroduces the powder filli
ng mecha
nism based o
n steppi
ng motor as the drivi
ng a
nd screw feedi
ng,which
not o
nly improves the packagi
ng efficie
ncy, but also improves the filli
ng stability. This paper first i
ntroduces the mecha
nical structure a
ndworki
ng pri
nciple of the powder filli
ng mecha
nism. The filli
ng machi
ne adopts the steppi
ng motor to drive the screw for qua
ntitative filli
ng. The screw type powder filli
ng machi
ne has simple structure a
nd high efficie
ncy. The mai
n pri
nciple is to fill the rotatio
n of the screw by o
ne rotatio
n. Thevolume a
nd rotatio
n time to co
ntrol theweight of the filli
ng powder. The speed of the motor is determi
ned by the i
nput pulse freque
ncy by the selectio
n of the steppi
ng motor. Therefore, the filli
ngweight ca
n be cha
nged by cha
ngi
ng the freque
ncy of the i
nput pulse to achieve the filli
ng ofvarious products. Claim. The filli
ng machi
ne
not o
nly has high efficie
ncy, but also greatly reduces the labor cost, reduces the damage of the toxic a
nd harmful powder particles to the laborer, a
nd the precisio
n ca
n also meet certai
n requireme
nts. Keywords:Powder Filli
ng Machi
ne；Screw；PLC；Steppi
ng Motor 目录 摘要I 关键词II 第一章绪论1 1.1研究背景1 1.2国内外研究现状1 1.3研究的内容和意义2 第二章总体方案设计3 2.1螺杆式计量原理介绍3 2.2称重式计量原理介绍7 2.3容积式计量原理介绍7 2.4设计要求与方案对比8 第三章机构设计10 3.1填充螺杆的设计计算10 3.2电机的选择12 3.3传动机构设计15 3.4轴的设计18 第四章总体结构设计及功能分析21 4.1总体结构的二维图21 4.2轴零件的二维图21 4.3齿轮二维图22 结论23 参考文献22 致谢23