摘  要

本文围绕自动滴定装置及其驱动单元设计展开研究。在自动滴定装置部分，首先进行制品材料选用分析，接着对装置进行测绘，并阐述成型设备选用，包括注塑机、模架的选择以及模具参数校核。随后拟定模具结构形式，涵盖型腔数量与排列方式确定、分型面选择、侧向分型与抽芯机构分析确定，以及主流道、分流道、浇口、定位圈设计，还涉及成型零部件、导向机构、推出机构和模具冷却系统设计。在自动滴定装置驱动单元部分，明确设计依据和目的，通过系统方案论证与比较，确定控制、滴定检测、液位监测、速度控制方案，选择合适电机并确定主从机通信方案，给出系统总体框图。在系统硬件设计方面，分别阐述从站和主站的硬件电路图及工作原理，详细介绍从站各系统单元设计，如中央处理单元、滴定信号检测单元等，还涉及主从站芯片时钟电路、复位单元和供电单元设计。该设计旨在实现自动滴定装置的高效、精准运行，为相关领域提供一种可行的解决方案。

关键词：自动滴定装置；驱动单元；模具设计；硬件设计

Abstract

This paper focuses on the design of an automatic titration device and its driving unit. In the part of the automatic titration device, the selection of product materials is first analyzed, followed by the mapping of the device and the explanation of the selection of molding equipment, including the choice of injection molding machines and mold bases, as well as the verification of mold parameters. Subsequently, the mold structure form is formulated, covering the determination of the number and arrangement of cavities, the selection of parting surfaces, the analysis and determination of side parting and core-pulling mechanisms, as well as the design of sprues, runners, gates, and locating rings. It also involves the design of molding parts, guiding mechanisms, ejection mechanisms, and mold cooling systems. For the driving unit of the automatic titration device, the design basis and purpose are clarified. Through system scheme demonstration and comparison, control, titration detection, liquid level monitoring, and speed control schemes are determined. A suitable motor is selected, and the master-slave communication scheme is established, with the overall system block diagram provided. In terms of system hardware design, the hardware circuit diagrams and working principles of the slave station and the master station are respectively elaborated. The design of each system unit of the slave station is introduced in detail, such as the central processing unit, titration signal detection unit, etc. It also involves the design of the chip clock circuits, reset units, and power supply units of the master and slave stations. This design aims to achieve efficient and accurate operation of the automatic titration device and provide a feasible solution for related fields.

Keywords: Automatic titration device; Driving unit; Mold design; Hardware design

目   录

Abstract

第一章 自动滴定装置的产品分析

1.1 制品材料的选用

1.2 自动滴定装置的测绘

1.3 自动滴定装置

1.4  成型设备的选用

1.4.1 注塑机的选择

1.4.2 模架的选择

1.4.3 模具参数的校核

1.5 模具结构形式的拟订

1.5.1 确定型腔数量及排列方式

1.5.2 注射模分型面的选择

1.5.3 模具侧向分型与抽芯机构的分析与确定

1.5.4主流道设计

1.5.5 分流道设计

1.5.6 浇口设计

1.5.7 定位圈设计

1.6 成型零部件设计

1.7 导向机构设计

1.8 推出机构的设计

1.8.1 推出脱模机构的选用

1.8.2 推杆设计

1.9 模具冷却系统

第二章 自动滴定装置驱动单元的总体方案

2.1 自动滴定装置驱动单元的设计依据和目的

2.2系统方案论证与比较

2.2.1 控制方案的比较

2.2.2滴定检测方案比较

2.2.3液位监测方案比较

2.2.4速度控制方案

2.2.5电机的选择

2.2.6主从机通信方案

2.3系统总体框图

第三章  系统的硬件设计

3.1 系统的硬件设计

3.2 从站的硬件电路图及工作原理

3.2 从站各系统单元的设计

3.2.1中央处理单元

3.2.2滴定信号检测单元

3.2.3滴定信号的比较、滤波、整形电路

3.2.4 液位检测单元

3.2.5检测电路的抗干扰措施

3.2.6声光报警电路

3.2.7 步进电机驱动单元（高度调整单元）

3.2.8 主从站接口电路

3.3 主站的硬件电路图及工作原理

3.3.1键盘单元

3.3.2 数码管显示单元

3.4主从站芯片时钟电路

3.5 主从站复位单元

3.6供电单元

致 谢

参考文献