设计简介
按键零件的模具设计
摘 要
本设计的题目是按键零件的塑料注塑模设计，从图纸上分析，该零件总体形状为长方形。在长度方向上有3个矩形的异形孔，易成型。从壁厚上看，壁厚最大处为1.5mm 最小处为1.2mm 壁厚较均匀，有利于零件的成型。
根据塑件的特点，模具型芯在动模部分。开模后，塑件应收缩包紧型芯，而
留在动模部分，其推出机构采用推件板推出的推件方式。该种脱模方式是在分型面处从壳体塑件的周边推出。推出力大且均匀。对侧壁脱模阻力较大的薄壁箱体或圆筒制品，推出后外观上不留痕迹。
对合导向机构的功能三保证动定模部分能够准确对合，使分别加工在动模和定模上的成型表面在模具闭合后形成形状和尺寸准确的腔体，从而保证塑件形状，壁厚和尺寸的准确，该模具采用导柱对合导向机构。导柱和型芯一起安装在动模一侧，这样在合模时可起保护作用。
相信不久本模具投入市场一定能带来很好的效益服务大众，服务社会。
关键词：
塑料
模具
凸模
推件板
Pressed key components mold design
This design topic is the pressed key components plastic note molds the design, analyzes from the blueprint, this components overall shape is a rectangle. Has 3 rectangular in the length direction the different shape holes, is easy to take shape. Looked from wall thickness that, the wall thickness most main point is the 1.5mm most narrow view is the 1.2mm wall thickness is even, is advantageous to components taking shape.
According to models a characteristic, the mold core is moving the mold to be partial. After operates the mold, models to be supposed to contract male ,but
Remains moves the mold to be partial, it promotes the organization to use pushes a board to promote pushes a way. This drawing of patterns way is peripheral models in a minute profile place from the shell to promote. Promotes the strength big also is even. To the sidewall drawing of patterns resistance big thin wall box body or the cylinder product, after promotes seemingly not the scar.
The involution guidance organization function three guarantees moves decides the mold to be partial can the accurate involution, causes to process separately in moves the mold and decides on the mold to take shape the surface closed to form the shape and the size accurate cavity body after the mold, thus guaranteed models a shape, wall thickness and size accurate, this mold uses the guide pillar involution guidance organization. The guide pillar and the core installs together in moves a mold side, like this when gathers the mold may get up the protective function.
Believed this mold invests the market certainly to be able soon to bring the very good benefit service populace, the service society.
Critical word:
plastic
Model
Male
Ejector plate
目录
前言 1
1 模塑工艺规程的编制 4
1.1塑件的工艺性分析 4
1.1.1 塑件的原材料分析 4
1.1.2 塑件的尺寸精度分析 4
1.1.3塑件的表面质量分析 5
1.1.4塑件的结构工艺性分析 5
1.2计算塑件的体积和质量 5
1.2.1计算塑件的体积 5
1.2.2计算塑件的质量 5
1.3塑件模塑成型工艺参数的确定 6
2 注塑模的结构设计 8
2.1分型面的选择 8
2.2型腔数目的确定及型腔的排列 9
2.3浇注系统的设计 10
2.3.1主流道设计 10
2.3.2分流道的设计 11
2.3.3浇口设计 12
2.4型芯，型腔结构的确定 12
2.4.1型芯的结构设计 12
2.4.2型腔的结构设计 13
2.5脱模机构的设计 13
2.5.1推板的结构 14
2.5.2推件板孔与型芯的配合 14
2.5.3导向装置的选择 14
2.6对合导向机构的设计 14
2.6.1导柱的结构形式的选择 15
2.6.2导套的结构形式的选择 15
2.7浇注系统凝料取出方式的选择 15
2.8排气系统的形式的确定 15
2.9模架的选用 15
3 模具设计的有关计算 16
3.1成型零件的工作尺寸计算 16
3.1.1模具安装的配合公差 16
3.2型腔侧壁厚度和底壁厚度的计算 19
4 模具加热与冷却系统的计算 21
4.1求塑件在硬化时每小时释放的容热量
21
4.2求冷却水的体积流量V 21
5 模具闭合高度的确定 22
6 注射机有关参数的校核 23
6.1模具安装部分的校核 23
6.2模具开模行程的校核 23
7 绘制模具总装图和非标准零件工作图 24
8模具的装配 25
设计总结 27
致谢 28
参考文献 29
摘 要
本设计的题目是按键零件的塑料注塑模设计，从图纸上分析，该零件总体形状为长方形。在长度方向上有3个矩形的异形孔，易成型。从壁厚上看，壁厚最大处为1.5mm 最小处为1.2mm 壁厚较均匀，有利于零件的成型。
根据塑件的特点，模具型芯在动模部分。开模后，塑件应收缩包紧型芯，而
留在动模部分，其推出机构采用推件板推出的推件方式。该种脱模方式是在分型面处从壳体塑件的周边推出。推出力大且均匀。对侧壁脱模阻力较大的薄壁箱体或圆筒制品，推出后外观上不留痕迹。
对合导向机构的功能三保证动定模部分能够准确对合，使分别加工在动模和定模上的成型表面在模具闭合后形成形状和尺寸准确的腔体，从而保证塑件形状，壁厚和尺寸的准确，该模具采用导柱对合导向机构。导柱和型芯一起安装在动模一侧，这样在合模时可起保护作用。
相信不久本模具投入市场一定能带来很好的效益服务大众，服务社会。
关键词：
塑料
模具
凸模
推件板
Pressed key components mold design
This design topic is the pressed key components plastic note molds the design, analyzes from the blueprint, this components overall shape is a rectangle. Has 3 rectangular in the length direction the different shape holes, is easy to take shape. Looked from wall thickness that, the wall thickness most main point is the 1.5mm most narrow view is the 1.2mm wall thickness is even, is advantageous to components taking shape.
According to models a characteristic, the mold core is moving the mold to be partial. After operates the mold, models to be supposed to contract male ,but
Remains moves the mold to be partial, it promotes the organization to use pushes a board to promote pushes a way. This drawing of patterns way is peripheral models in a minute profile place from the shell to promote. Promotes the strength big also is even. To the sidewall drawing of patterns resistance big thin wall box body or the cylinder product, after promotes seemingly not the scar.
The involution guidance organization function three guarantees moves decides the mold to be partial can the accurate involution, causes to process separately in moves the mold and decides on the mold to take shape the surface closed to form the shape and the size accurate cavity body after the mold, thus guaranteed models a shape, wall thickness and size accurate, this mold uses the guide pillar involution guidance organization. The guide pillar and the core installs together in moves a mold side, like this when gathers the mold may get up the protective function.
Believed this mold invests the market certainly to be able soon to bring the very good benefit service populace, the service society.
Critical word:
plastic
Model
Male
Ejector plate
目录
前言 1
1 模塑工艺规程的编制 4
1.1塑件的工艺性分析 4
1.1.1 塑件的原材料分析 4
1.1.2 塑件的尺寸精度分析 4
1.1.3塑件的表面质量分析 5
1.1.4塑件的结构工艺性分析 5
1.2计算塑件的体积和质量 5
1.2.1计算塑件的体积 5
1.2.2计算塑件的质量 5
1.3塑件模塑成型工艺参数的确定 6
2 注塑模的结构设计 8
2.1分型面的选择 8
2.2型腔数目的确定及型腔的排列 9
2.3浇注系统的设计 10
2.3.1主流道设计 10
2.3.2分流道的设计 11
2.3.3浇口设计 12
2.4型芯，型腔结构的确定 12
2.4.1型芯的结构设计 12
2.4.2型腔的结构设计 13
2.5脱模机构的设计 13
2.5.1推板的结构 14
2.5.2推件板孔与型芯的配合 14
2.5.3导向装置的选择 14
2.6对合导向机构的设计 14
2.6.1导柱的结构形式的选择 15
2.6.2导套的结构形式的选择 15
2.7浇注系统凝料取出方式的选择 15
2.8排气系统的形式的确定 15
2.9模架的选用 15
3 模具设计的有关计算 16
3.1成型零件的工作尺寸计算 16
3.1.1模具安装的配合公差 16
3.2型腔侧壁厚度和底壁厚度的计算 19
4 模具加热与冷却系统的计算 21
4.1求塑件在硬化时每小时释放的容热量
214.2求冷却水的体积流量V 21
5 模具闭合高度的确定 22
6 注射机有关参数的校核 23
6.1模具安装部分的校核 23
6.2模具开模行程的校核 23
7 绘制模具总装图和非标准零件工作图 24
8模具的装配 25
设计总结 27
致谢 28
参考文献 29
