<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[模具司筒(套筒顶针)规格与使用注意事项——模具行业从业者必备知识手册]]></title><description><![CDATA[<h1>模具司筒规格</h1>
<h2>司筒的作用</h2>
<p dir="auto">用于顶出圆柱形的产品(如螺丝柱/BOSS柱等)，套在镶针外面形成圆柱面。</p>
<h2>规格</h2>
<p dir="auto">外径: 4/5/6/8/10/12/16mm<br />
内径: 2/3/4/5/6/8/10mm<br />
长度: 80~300mm<br />
材料: SKD61 内径HRC48~52</p>
<h2>配套镶针</h2>
<p dir="auto">直径=司筒内径-0.02~0.05mm<br />
材料: SKD61 硬度HRC50~55<br />
镶针固定在底板上，司筒固定在顶针板上</p>
<h2>安装要求</h2>
<ul>
<li>司筒与模板间隙0.02~0.04mm</li>
<li>镶针与司筒间隙0.01~0.02mm</li>
<li>司筒底部密封防止漏胶</li>
</ul>
<h2>常见问题</h2>
<p dir="auto">司筒断裂: 壁厚太薄/热处理过硬<br />
司筒卡死: 配合间隙太小/镶针弯曲<br />
司筒磨损: 壁厚太薄/润滑不良</p>
<p dir="auto"><em>本文由模极社(<a href="http://www.mj7.cn" rel="nofollow ugc">www.mj7.cn</a>)整理发布</em></p>
<h3><img src="https://forum.mj7.cn/assets/plugins/nodebb-plugin-emoji/emoji/android/1f4cb.png?v=ctg9fn65o46" class="not-responsive emoji emoji-android emoji--clipboard" title=":clipboard:" alt="📋" /> 模具结构设计要点</h3>
<table class="table table-bordered table-striped">
<thead>
<tr>
<th>结构要素</th>
<th>设计要点</th>
<th>常见规格/参数</th>
</tr>
</thead>
<tbody>
<tr>
<td>分型面</td>
<td>选择产品最大截面处</td>
<td>平面/曲面/阶梯面</td>
</tr>
<tr>
<td>滑块</td>
<td>侧向抽芯机构</td>
<td>角度15-25°，行程&gt;3mm</td>
</tr>
<tr>
<td>斜顶</td>
<td>内部倒扣脱模</td>
<td>角度5-12°</td>
</tr>
<tr>
<td>顶针</td>
<td>顶出产品</td>
<td>直径2-12mm，布局均匀</td>
</tr>
<tr>
<td>冷却水道</td>
<td>控制模温</td>
<td>间距2-3倍水道直径</td>
</tr>
<tr>
<td>浇口</td>
<td>熔料进入型腔</td>
<td>点浇口/侧浇口/潜伏式</td>
</tr>
</tbody>
</table>
<hr />
<h3><img src="https://forum.mj7.cn/assets/plugins/nodebb-plugin-emoji/emoji/android/1f4cb.png?v=ctg9fn65o46" class="not-responsive emoji emoji-android emoji--clipboard" title=":clipboard:" alt="📋" /> 相关标准参考</h3>
<ul>
<li>GB/T 12555 塑料注射模模架</li>
</ul>
<hr />
<h3><img src="https://forum.mj7.cn/assets/plugins/nodebb-plugin-emoji/emoji/android/1f517.png?v=ctg9fn65o46" class="not-responsive emoji emoji-android emoji--link" title=":link:" alt="🔗" /> 你可能还感兴趣</h3>
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<hr />
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<hr />
<p dir="auto"><strong><img src="https://forum.mj7.cn/assets/plugins/nodebb-plugin-emoji/emoji/android/1f4da.png?v=ctg9fn65o46" class="not-responsive emoji emoji-android emoji--books" title=":books:" alt="📚" /> 推荐阅读</strong><br />
<img src="https://forum.mj7.cn/assets/plugins/nodebb-plugin-emoji/emoji/android/1f449.png?v=ctg9fn65o46" class="not-responsive emoji emoji-android emoji--point_right" title=":point_right:" alt="👉" /> <a href="/t/495-495">潜伏式浇口（隧道浇口）</a><br />
<img src="https://forum.mj7.cn/assets/plugins/nodebb-plugin-emoji/emoji/android/1f449.png?v=ctg9fn65o46" class="not-responsive emoji emoji-android emoji--point_right" title=":point_right:" alt="👉" /> <a href="/t/support-pillar">支撑柱（Support Pillar）</a><br />
<img src="https://forum.mj7.cn/assets/plugins/nodebb-plugin-emoji/emoji/android/1f449.png?v=ctg9fn65o46" class="not-responsive emoji emoji-android emoji--point_right" title=":point_right:" alt="👉" /> <a href="/t/3283-3283">回针</a></p>
<hr />
<p dir="auto">有没有同行遇到过同样的问题？分享一下经验。</p>
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