贴片机电动式喂料器的设计及其研究

发布时间：2018-01-10 11:25

本文关键词：贴片机电动式喂料器的设计及其研究　出处：《吉林大学》2012年硕士论文　论文类型：学位论文

更多相关文章： 贴片机 喂料器 电磁设计 步进电机

【摘要】：喂料器（Feeder）也称供料器，在贴片机行业中常被称为飞达。在表面贴装技术中，简称SMT（Surface Mount Technology），喂料器是影响贴片机贴片性能和生产效率的重要部件，也是贴片机最主要的配件之一。因此，许多贴片机将可容纳喂料器的种类及数量作为其型号的标志之一。由于传统的喂料器一般是气动机械式喂料器，其动力来源为气缸，因此存在一些无法避免的自身缺陷，主要表现为以下几点： 1、机械结构复杂，维护较为不便，且容易出现飞达不卷带以及由于弹簧等的变形导致的推料不到位、不进料等一系列问题。 2、采用气动方式作为动力来源，，因此对贴片机相关部件较好的密封性，同时贴片头在取料时压杆推动喂料器推料时，机械振动较大，容易出现丢料等情况。 3、采用气动作为动力来源，自动化程度受到限制。鉴于上述机械式喂料器存在的一些无法避免的缺点，本文设计并研制电动式喂料器来延长喂料器的使用寿命、降低维护成本、提高贴片效率、减少机械振动、实现喂料器的电气自动化。本文采用的方案为：用一台薄盘式步进电机实现料带按贴片机的要求前进，另一台薄盘式步进电机带动撕皮轮转动将料带保护皮撕开，两台电机同步运行实现喂料器卷带及撕皮的功能。为使贴片机能更有效率的工作，一台贴片机上飞达的数量某种意义上代表这台贴片机的贴片能力，由于市场上常见的步进电机在满足扭矩要求的情况下，尺寸偏大，厚度较厚，因此本文设计并定制了一款薄盘式步进电机。硬件部分，采用Pic18F458作为控制系统的微控制器，采用L298N作为步进电机的驱动器，采用8位拨码开关设置喂料器的ID。软件部分，采用CAN总线实现喂料器与主机、喂料器与贴片头、喂料器与喂料器之间的信息传递。同时也解决了贴片机上料带的前进及料带的撕皮时同步运行的控制问题。经过对喂料器样机进行喂料器实验验证，结果证明喂料精度达到贴片机要求。
[Abstract]:Feeder feeder, also known as feeder, is often called Fedda in the placement machine industry. In surface mount technology. For short, SMT(Surface Mount technology, feeder is an important component that affects the performance and production efficiency of placement machine. It is also one of the most important accessories for the placement machine. Therefore, many placement machines take the type and quantity of the feeder as one of the symbols of their models. Because the traditional feeder is generally pneumatic mechanical feeder, its power source is cylinder, so there are some unavoidable defects, mainly as follows: 1. The mechanical structure is complex, the maintenance is inconvenient, and it is easy to appear a series of problems, such as the Feddahl tape and the deformation of spring and so on, the pushing material is not in place and the material is not in place, and so on. 2, the pneumatic method is used as the power source, so the sealing of the relative parts of the placement machine is better, and the mechanical vibration of the chip head is larger when the pressure bar pushes the feeder to push the feed when the feed is taken. It is easy to lose materials and so on. 3. The degree of automation is limited by using aerodynamics as power source. In view of some unavoidable shortcomings of the mechanical feeder mentioned above, this paper designs and develops an electric feeder to prolong the service life of the feeder, reduce the maintenance cost, improve the efficiency of the patch, and reduce the mechanical vibration. In this paper, a thin disk stepping motor is used to realize the material belt to advance according to the requirements of the placement machine. Another thin disc stepping motor drives the wheel to tear the protective skin, and the two motors simultaneously run to realize the function of feeding tape and shredding. In order to make the placement machine more efficient. The number of Fidahs on a placement machine represents the chip ability of this machine in a sense, because the common stepping motor in the market meets the requirements of torque, the size is too large and the thickness is thick. In this paper, a thin disk stepping motor is designed and customized. In the hardware part, Pic18F458 is used as the microcontroller of the control system, and L298N is used as the driver of the stepping motor. The ID.Software part of the feeder is set by 8-bit code switch, and the feeder and host, feeder and chip head are realized by CAN bus. The information transfer between feeder and feeder. At the same time, it solves the problem of the control of the advance of the feeding belt and the simultaneous operation of the strip when the strip is torn. The feeder prototype is verified by the feeder experiment. The results show that the feeding precision meets the requirements of the placement machine.
【学位授予单位】：吉林大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH237.1

【参考文献】