张紧轮成型工艺及注射模设计+CAD图纸
关键词：张紧轮；注塑模设计；CAD/CAM,4207
Molding Process and Injection mould Design of Tension Wheel
Abstract: This text has introduced the Tension wheel and the structural influence on moulding a quality of mould shaping, pour the systematic design, carry the design of the system, shaping part of the mould and assembly structure out. Through to the structural scheme of the mould, working course of the mould and processing the detailed analysis of attentive matters and describing, try hard to let readers understand that inject designing program of the mould. Analyzed to whole structure and non-standard part designed by oneself of mould of the mould in the design, have checked its various parameters, and has drawn the drawing. During the design, most of the time was spent on design of case part, design of molding part and the design of the mould frame. Pour the system in the design by reaching the latent runner. Unavoidable I met some difficulties in the design, but I have conquered them with my assiduity. The design is an adventruous try on the CAD/CAM technology of plastics pieces and mould, and I believed that it can have certain directive significance on actual production.
Key words: Tension wheel; injection mold design; CAD / CAM
目 录
1 绪论 1
1.1 选题依据及意义 1
1.2 本课题在国内外的研究现状1
1.2.1 中国模具工业概况1
1.2.2 存在问题和主要差距3
1.3 本课题的发展展望4
2 塑件的分析5
2.1 塑件结构特点5
2.2 塑件技术要求分析5
2.3 塑件材料特性6
2.4 塑件材料成型性能7
2.5 塑料注射成型工艺条件7
2.6 塑料注射成型过程7
2.7 塑料注射成型工艺参数8
3 模具型腔的设计9
3.1 分型面的选择9
3.2 型腔数目的确定9
3.3 注射机的选择10
3.3.1 额定注射量10
3.3.2 校核锁模力10
3.3.3 校核注射机注射压力11
3.3.4 XS-ZY-125型注射机与模具关系11
3.4 脱模斜度12
3.5 成型零件的设计12
3.5.1 型芯、型腔的结构形式12
3.5.2 型芯、型腔的工艺性12
3.6 型腔及型芯尺寸计算13
3.6.1 型腔的尺寸计算13
3.6.2 型芯的尺寸计算16
3.7 排气槽的设计18
3.8 型腔的强度校核19
3.8.1 材料选择 19
3.8.2 强度校核 19
4 浇注系统的设计 20
4.1 浇注系统的分析20
4.2 主浇道的设计20
4.3 分流道的设计20
4.4 浇口的设计21
4.5 冷料井22
5 脱模机构的设计 23
5.1 推杆的设计23
5.2 侧向分型与抽芯机构设计23
5.2.1 侧向分型与抽芯机构类型的确定23
5.2.2 斜顶杆的设计23
5.2.3 各项尺寸的计算与校核25
6 模具结构的零件设计 26
6.1 模架的选择26