摘要本文系统阐述了一个生产实际问题——电容器盖板三件套自动组装过程中一系列生产机械设计、电气设计和PLC设计，其中主要通过气缸以及真空吸盘来实现零件的抓取与装配。

装配自动化之所以成为必然的趋势，原因是不仅通过它可以降低成本、提高质量与可靠性，而且对于有些包含微小零件的产品，由于手工装配无法胜任，只能采用自动装配，即采用适当的技术取代人手的操作。

本课题中的待装配电容器由硅胶圈、铆钉、纸板三部分组成。硅胶圈和纸板中间有与铆钉相配合的孔，要实现自动化装配，就必须精确识别零件上孔的位置，将精度控制在0.1mm之内，才能将零件妥善装配。

本自动化装置用步进电动机与圆盘代替旋转分度盘，在圆盘周围设置了四个工位。前三个工位分别为硅胶圈、纸板、铆钉的抓取和装配；第四个工位为防止零件装配的不紧固，再次进行压紧，并在压紧后将零件取出。每一步三个零件同时装配，极大地提高了生产能力和生产效率。50815

PLC设计是实现整个自动化装配的关键。在四个工位气缸运动路线上安装位置传感器，在气缸到达指定位置时，PLC通过控制电磁阀停止或工作来实现自动化装配。

关键字：电容器；自动化装配；气缸；PLC

Abstract

This paper describes an actual production system problem - a series of automatic production assembly process of the cover and others three-pieces of capacitors ,which is mechanical design, electrical design and PLC design.The object mainly through the cylinder and vacuum cups to crawl the parts and assembly.

    Assembly automation have become an inevitable trend, because only through it can reduce costs, improve quality and reliability, but also for some products contain small parts, that can not be qualified as manual assembly, only to use automatic assembly, namely the use of appropriate technology replacing manual operation.

    In this subject, the capacitor to be assembled a silicone ring, rivets, cardboard consists of three parts. Silicone ring and cardboard middle compatible with rivet holes, to achieve automated assembly, it must accurately identify the location of the hole on the part will be within 0.1mm precision control in order to properly assemble the parts.

    The automation devices instead of rotary indexing plate disc with stepping motor and disc. Four stations have been set up around the disc . The first three stations were silicone ring, cardboard, rivets, handling and assembly; fourth station to prevent parts assembly is not fastened again pressed and remove the parts after pressing. Each step of assembling three parts simultaneously, greatly improve the production capacity and productivity.

    PLC design is the key to implement the entire automated assembly. In the four-position cylinder position sensor installed on the moving route, arrived at the designated location in the cylinder, PLC by controlling the solenoid valve to stop working to implement automated assembly.

Keywords: capacitors; automated assembly; cylinder; PLC

目   录

第一章 绪论 1

1.1 工业自动化和自动装配生产 1

1.2 气动技术在自动化装配中的应用 2

1.3 自动上下料机 3

1.4 本课题研究的价值和意义 4

第二章 课题概述 6

2.1 待装配零件 6

2.2 装配及生产效率要求 7

第三章 装配系统的整体设计