摘要：本课题研究的是“塑料薄膜式穿孔机”的设计，在结构上有特别的地方。第一个特点是此穿孔机的送料方式，根据塑料薄膜具有韧性，且不易被拉断的特点，送料方式应选择“拉”的方式。若采用“推”的方式，易推送不平或起皱。此外，另一个特点是此穿孔机在整个冲料过程中都是自动抬料，自动送料，自动冲料。由穿孔机主轴带动偏心轮和凸轮转动，偏心轮一方面带动冲头完成冲料，使塑料薄膜一头拉紧。另一方面带动抬料杠杆抬料，产生塑料薄膜带动滚筒转动的效果。而凸轮带动摆杆摆动，依靠摆杆上的棘爪推动棘轮转动相应的角度，从而达到传送塑料薄膜的目的。为了满足设计要求，计算出冲裁力，确定所需电动机的功率，选取合适的电机。其后通过计算弯矩、扭矩、强度要求等，选用轴和轴承，并且计算设计凸轮、偏心轮与杠杆机构等的详细参数。
关键词： 送料方式；自动抬料；自动送料；自动冲料3833
The design of Plastic film puncher
Abstract: This article is about " the plastic film puncher ". The structure is very special. The first feature is the way of this plastic film puncher’s transmission. According to the plastic film with toughness, and it is difficult to pulled off, feeding method should be selected "pull". If use of "push", it will be easy to push uneven or wrinkled. Another feature is the puncher in the entire Purge process is automatic lift material, automatic feeding, automatic red material. Eccentric cam driven by the punching machine spindle rotation, the eccentric drive the punch on the one hand to complete the red material, the plastic film is a taut. Hand drive lever lift lifting material feed to produce plastic film drive roller rotation effect. Cammed lever swing, push the ratchet pawl to rely on the swing lever rotation angle, so as to achieve the purpose of transmitting plastic film. In order to meet the design requirements, calculate the blanking force, determine the required motor power, and select the appropriate motor. Subsequently by calculating the moment, torque, strength requirements, the choice of the shaft and bearing, and calculates the cam design, the eccentric wheel and the lever mechanism of detailed parameters.
Key words: transmission mode; automatic lift material; automatic transmission; automatic blanking
目  录
摘要i
Abstractii
目录iii
1  绪论  1
1.1模具工业的现状1
1.2穿孔机在国内外研究现状1
1.3课题的设计要求及参数3
1.3.1  课题的来源 3
1.3.2  设计的技术要求3
1.3.3  原始条件及数据4
2  塑料薄膜式穿孔机基本结构与工作原理5
2.1塑料薄膜的特性5
2.2 塑料薄膜式穿孔机的工作原理5
2.3塑料薄膜式穿孔机送料方式的选择6
3  冲裁系统的机械结构设计设计7
3.1冲裁模具结构设计7
3.1.1  模具结构设计7
3.1.2  冲裁的工作原理7
3.2凸模（冲头）组件及其结构设计8
3.2.1  冲头设计8
3.2.2  滑块机构设计8
3.3 杠杆机构的设计9
3.4 凹模的设计9
3.5冲裁力的分析与计算9
4    主轴传动系统机械结构设计11
4.1    电动机的选择11
4.1.1  选择电动机的类型与结构形式11
4.1.2  选择电动机的容量11
4.1.3 确定电动机的转速12
4.2    联轴器的选用13
4.2.1 联轴器的分类13
4.2.2 联轴器的选择13
4.3主轴的设计14
4.3.1  轴的材料选择14
4.3.2  轴的结构设计15
4.3.3  轴的初估轴径16
4.3.4  轴的强度计算17
4.4键的选择和计算20 塑料薄膜式穿孔机设计+零件图+装配图:http://www.751com.cn/jixie/lunwen_305.html