CN111037869A - 一种hdpe大口径双壁波纹管在线扩口方法 - Google Patents
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- B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
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Abstract
本发明公开了一种HDPE大口径双壁波纹管在线扩口方法,首先将搅拌均匀的原料分别送入内管挤塑机和外管挤塑机,通过内、外管挤塑机分别挤入内、外管口模具,通过内、外管口模具挤入成型模具,在进行扩口过程中切换扩口模具,将内管原液和外管原液融合挤入扩口模具内部形成扩口结构。本发明提出的一种HDPE大口径双壁波纹管在线扩口方法,通过设置扩口模具与模具的移动,使设备在实际生产中自动控制模具的变动和扩口的同时精准控制挤出压力和螺杆转速,使扩口在成型的时候便于微调,该在线扩口方法将扩口和成型工艺紧密结合,扩口后进行切断波纹管,与传统切断后进行扩口工艺相比节省了时间提高了效率,同时避免了传统扩口产生的扩口缺陷。
Description
技术领域
本发明涉及波纹管材技术领域,尤其涉及一种HDPE大口径双壁波纹管在线扩口方法。
背景技术
高密度聚乙烯(HDPE)双壁波纹管,是一种具有环状结构外壁和平滑内壁的新型管材,80年代初在德国首先研制成功。经过十多年的发展和完善,已经由单一的品种发展到完整的产品系列。目前在生产工艺和使用技术上已经十分成熟。由于其优异的性能和相对经济的造价,在欧美等发达国家已经得到了极大的推广和应用。在我国,HDPE 双壁波纹管的推广和应用正处在上升势态阶段,各项技术指标均达到使用标准。双壁波纹管内壁颜色通常有蓝色和黑色,部分品牌内壁会使用黄色。
双壁波纹管的扩口结构能加快管道的加速安装,提高安装效率,目前的双玻波纹管的扩口工艺采用切断管材后进行扩口处理,该方法生产出的双壁波纹管的扩口部位容易产生扩口断裂和扩口韧性差的问题。
发明内容
本发明的目的是为了解决现有技术中存在的缺点,而提出的一种 HDPE大口径双壁波纹管在线扩口方法。
为了实现上述目的,本发明采用了如下技术方案:一种HDPE大口径双壁波纹管在线扩口方法,首先将搅拌均匀的原料分别送入内管挤塑机和外管挤塑机,通过内、外管挤塑机分别挤入内、外管口模具,通过内、外管口模具挤入成型模具,在进行扩口过程中切换扩口模具,将内管原液和外管原液融合挤入扩口模具内部形成扩口结构,具体分为以下步骤:
S1:直管生产时将原料搅拌均匀上入SJSZ51PVC穿线管挤塑机内部,控制挤塑机螺杆转速为最高转速的70-80%,控制挤塑压力30Mpa,使原料液体温度控制200-220℃;
S2:挤塑机挤出的液体原料通过内外管口模具进入内外管成型模具并且在模具内部连续成型;
S3:在SBC500型双壁波纹管成型机组上更换一组内外管成型模具为扩口模具,该扩口模具与内外管成型模具配套,波纹管长度达到扩口数据值时,自动进行扩口模具的移入;
S4:通过控制内层气压使内、外管原液在扩口模具内部结合,形成扩口结构,同时扩口模具安装水冷装置提高扩口模具降温提高成型效率;
S5:扩口结束后进行切断处理,移开扩口模具,经线直管生产。优选地,S4进行扩口成型时,内管挤塑机螺杆转速为转速30-40转每min,外管挤挤塑机的螺杆转速50-60转每min,内口模内气气压为0.6-3Mpa,控制夹层气气压0.02-0.4Mpa。
本发明具有的有益效果:
本发明提出的一种HDPE大口径双壁波纹管在线扩口方法,通过设置扩口模具与模具的移动,使设备在实际生产中自动控制模具的变动和扩口的同时精准控制挤出压力和螺杆转速,使扩口在成型的时候便于微调,该在线扩口方法将扩口和成型工艺紧密结合,扩口后进行切断波纹管,与传统切断后进行扩口工艺相比节省了时间提高了效率,同时避免了传统扩口产生的扩口缺陷。
具体实施方式
以下使对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。
一、实施例部分
实施例1
一种HDPE大口径双壁波纹管在线扩口方法,首先将搅拌均匀的原料分别送入内管挤塑机和外管挤塑机,通过内、外管挤塑机分别挤入内、外管口模具,通过内、外管口模具挤入成型模具,在进行扩口过程中切换扩口模具,将内管原液和外管原液融合挤入扩口模具内部形成扩口结构,具体分为以下步骤:
S1:直管生产时将原料搅拌均匀上入SJSZ51PVC穿线管挤塑机内部,控制挤塑机螺杆转速为最高转速的70-80%,控制挤塑压力30Mpa,使原料液体温度控制200-220℃;
S2:挤塑机挤出的液体原料通过内外管口模具进入内外管成型模具并且在模具内部连续成型;
S3:在SBC500型双壁波纹管成型机组上更换一组内外管成型模具为扩口模具,该扩口模具与内外管成型模具配套,波纹管长度达到扩口数据值时,自动进行扩口模具的移入;
S4:通过控制内层气压使内、外管原液在扩口模具内部结合,形成扩口结构,同时扩口模具安装水冷装置提高扩口模具降温提高成型效率;
S5:扩口结束后进行切断处理,移开扩口模具,经线直管生产。
S4进行扩口成型时,内管挤塑机螺杆转速为转速30-40转每min,外管挤挤塑机的螺杆转速50-60转每min,内口模内气气压为 0.6-3Mpa,控制夹层气气压0.02-0.4Mpa。
实施例2
一种HDPE大口径双壁波纹管在线扩口方法,首先将搅拌均匀的原料分别送入内管挤塑机和外管挤塑机,通过内、外管挤塑机分别挤入内、外管口模具,通过内、外管口模具挤入成型模具,在进行扩口过程中切换扩口模具,将内管原液和外管原液融合挤入扩口模具内部形成扩口结构,具体分为以下步骤:
S1:直管生产时将原料搅拌均匀上入SJSZ51PVC穿线管挤塑机内部,控制挤塑机螺杆转速为最高转速的70-80%,控制挤塑压力30Mpa,使原料液体温度控制200-220℃;
S2:挤塑机挤出的液体原料通过内外管口模具进入内外管成型模具并且在模具内部连续成型;
S3:在SBC500型双壁波纹管成型机组上更换一组内外管成型模具为扩口模具,该扩口模具与内外管成型模具配套,波纹管长度达到扩口数据值时,自动进行扩口模具的移入;
S4:通过控制内层气压使内、外管原液在扩口模具内部结合,形成扩口结构,同时扩口模具安装水冷装置提高扩口模具降温提高成型效率;
S5:扩口结束后进行切断处理,移开扩口模具,经线直管生产。
S4进行扩口成型时,内管挤塑机螺杆转速为转速40-60转每min,外管挤挤塑机的螺杆转速30-50转每min,内口模内气气压为 0.6-2.5Mpa,控制夹层气气压0.02-0.3Mpa。
二、对比检测部分
选取实施例1-2根据本发明提出的在线扩口方法生产出的HDPE大口径双壁波纹和非在线扩口工艺生产出的两段HDPE大口径双壁波纹进行扩口结构比较,得出以下数据:
由上表可观察出本发明提出的在线扩口方法较之非在线扩口方法具有明显改善扩口异常的效果,特别对于扩口断裂现象具有彻底避免的效果,同时在线扩口方法提高了生产效率。
本发明提出的一种HDPE大口径双壁波纹管在线扩口方法,通过设置扩口模具与模具的移动,使设备在实际生产中自动控制模具的变动和扩口的同时精准控制挤出压力和螺杆转速,使扩口在成型的时候便于微调,该在线扩口方法将扩口和成型工艺紧密结合,扩口后进行切断波纹管,与传统切断后进行扩口工艺相比节省了时间提高了效率,同时避免了传统扩口产生的扩口缺陷。
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (5)
1.一种HDPE大口径双壁波纹管在线扩口方法,首先将搅拌均匀的原料分别送入内管挤塑机和外管挤塑机,通过内、外管挤塑机分别挤入内、外管口模具,通过内、外管口模具挤入成型模具,在进行扩口过程中切换扩口模具,将内管原液和外管原液融合挤入扩口模具内部形成扩口结构,具体分为以下步骤:
S1:直管生产时将原料搅拌均匀上入SJSZ51PVC穿线管挤塑机内部,控制挤塑机螺杆转速为最高转速的70-80%;
S2:挤塑机挤出的液体原料通过内外管口模具进入内外管成型模具并且在模具内部连续成型;
S3:在SBC500型双壁波纹管成型机组上更换一组内外管成型模具为扩口模具,该扩口模具与内外管成型模具配套,波纹管长度达到扩口数据值时,自动进行扩口模具的移入;
S4:通过控制内层气压使内、外管原液在扩口模具内部结合,形成扩口结构,同时扩口模具安装水冷装置提高扩口模具降温提高成型效率;
S5:扩口结束后进行切断处理,移开扩口模具,经线直管生产。
2.根据权利要求1所述的一种HDPE大口径双壁波纹管在线扩口方法,其特征在于:所述S1步骤中控制挤塑机挤塑压力30Mpa,使原料液体温度控制200-220℃。
3.根据权利要求1所述的一种HDPE大口径双壁波纹管在线扩口方法,其特征在于:所述S4进行扩口成型时,外管挤塑机的螺杆转速50-60转每min,控制夹层气气压0.02-0.4Mpa。
4.根据权利要求1所述的一种HDPE大口径双壁波纹管在线扩口方法,其特征在于:所述S4进行扩口成型时,内管挤塑机螺杆转速为转速30-40转每min,内口模内气压为0.6-3Mpa。
5.根据权利要求1所述的一种HDPE大口径双壁波纹管在线扩口方法,其特征在于:所述生产HDPE大口径双壁波纹管的车间温度控制在20-25℃。
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CN109721800A (zh) * | 2019-01-24 | 2019-05-07 | 安徽合想科技有限公司 | 一种滑石粉增强hdpe复合材料及其制备方法和应用 |
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DE2542045A1 (de) * | 1975-08-27 | 1977-03-03 | Poloplast Kunststoffwerk | Verfahren und vorrichtung zum herstellen von formkoerpern |
CN2668379Y (zh) * | 2003-08-26 | 2005-01-05 | 甘国工 | 在塑料波纹管成型机上完成整体双壁承插口的装置 |
CN101053994A (zh) * | 2007-03-30 | 2007-10-17 | 上海公元建材发展有限公司 | Hdpe大口径双壁波纹管在线扩口方法 |
CN205781456U (zh) * | 2016-06-22 | 2016-12-07 | 上海公元建材发展有限公司 | 一种在线扩口的pvc‑m双壁波纹管 |
CN108274722A (zh) * | 2018-03-26 | 2018-07-13 | 大连三垒科技有限公司 | 波纹管双层承插口在线成型扩口模块尾部压紧装置 |
CN109721800A (zh) * | 2019-01-24 | 2019-05-07 | 安徽合想科技有限公司 | 一种滑石粉增强hdpe复合材料及其制备方法和应用 |
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