CN110706850A - 耐弯曲防断芯拖链电缆及其制备方法 - Google Patents

耐弯曲防断芯拖链电缆及其制备方法 Download PDF

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CN110706850A
CN110706850A CN201911069596.XA CN201911069596A CN110706850A CN 110706850 A CN110706850 A CN 110706850A CN 201911069596 A CN201911069596 A CN 201911069596A CN 110706850 A CN110706850 A CN 110706850A
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layer
core
resistant
copper
cable
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黄建卫
江平
高旭皓
王成旺
王毅
王登峰
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Zhejiang Yuantong Wire and Cable Manufacturing Co Ltd
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Abstract

本发明公开了一种耐弯曲防断芯拖链电缆及其制备方法，包括若干绝缘线芯和一个抗拉内芯，所述绝缘线芯以所述抗拉内芯为中心周向环绕布置为至少一层并共同同心绞合构成缆芯，所述缆芯外部依次设置有氟树脂绕包带、双层聚乙烯阻水层、铜塑复合带绕包屏蔽层、铜线屏蔽缠绕层、内护套、耐热层和外护套，所述绝缘线芯包括内导体和包覆在所述内导体外部的氟树脂绝缘层，所述内导体为若干股线同心绞合构成复绞线，所述股线为若干镀锡铜单丝和若干芳纶丝同心绞合构成，所述股线的绞向与所述复绞线的绞向相反，所述复绞线的绞向与所述缆芯绞向相反。该拖链电缆具有优异的耐弯曲性，并有效防止断芯常发问题及护套开裂现象。

Description

耐弯曲防断芯拖链电缆及其制备方法
技术领域
本发明涉及拖链电缆技术领域，尤其涉及一种耐弯曲防断芯拖链电缆及其制备方法。
背景技术
为了防止电缆缠绕、磨损、拉断、吊钩和散射，电缆经常被放入电缆拖链中以保护电缆，而电缆可以与拖链来回移动，以防止电缆缠绕、磨损、拉断，在设备单元需要来回移动的情况下，上上下下地连接和松开电缆，这种高度灵活的专用电缆与拖链来回移动，不容易磨损，称为拖链电缆。拖链电缆广泛应用于工业电子系统、自动发电线路、机器人、消防系统、起重机、数控系统及冶金工业等等。比如，在起重设备和吊车、抓斗等设备行业中，普通电缆不能满足于使用要求，一般的电缆在反复卷绕拖链后，使用寿命都很短，正常使用一般3个月左右，就会使线芯断线或护套开裂。
发明内容
本发明针对现有技术的不足，所要解决的技术问题是提供一种耐弯曲防断芯拖链电缆，具有优异的耐弯曲性，并有效防止断芯常发问题及护套开裂现象。同时，还提供该拖链电缆的制备方法。
本发明是通过以下技术方案使上述技术问题得以解决。
耐弯曲防断芯拖链电缆，包括若干绝缘线芯和一个抗拉内芯，所述绝缘线芯以所述抗拉内芯为中心周向环绕布置为至少一层并共同同心绞合构成缆芯，所述缆芯外部依次设置有氟树脂绕包带、双层聚乙烯阻水层、铜塑复合带绕包屏蔽层、铜线屏蔽缠绕层、内护套、耐热层和外护套，所述绝缘线芯包括内导体和包覆在所述内导体外部的氟树脂绝缘层，所述内导体为若干股线同心绞合构成复绞线，所述股线为若干镀锡铜单丝和若干芳纶丝同心绞合构成，所述股线的绞向与所述复绞线的绞向相反，所述复绞线的绞向与所述缆芯绞向相反。
作为优选，所述缆芯和所述氟树脂绕包带之间的空间内填充有树脂填充芯材。
作为优选，所述双层聚乙烯阻水层由内侧的MDPE阻水内层和外侧的LDPE阻水外层共挤成型。
作为优选，所述铜塑复合带绕包屏蔽层为铜塑复合带间隙绕包结构，所述铜塑复合带由铜箔带和与所述铜箔带内侧面热合成一体的EEA补强填充层构成。
作为优选，所述铜线屏蔽缠绕层为聚酯纤维铜箔丝和镀锡铜单丝互为逆向螺旋缠绕编织构成。
作为优选，所述铜线屏蔽缠绕层为铜线编织布绕包结构，所述铜线编织布为聚酯纤维平织基布上纵向编织有镀锡铜丝。
作为优选，所述铜线屏蔽缠绕层为铜线编织布与尼龙布并绕结构，所述铜线编织布为聚酯纤维平织基布上纵向编织有镀锡铜丝。
作为优选，所述内护套和所述外护套均为氯丁橡胶护套，所述耐热层为氯化聚乙烯材质。
作为优选，所述抗拉内芯包括尼龙绳和所述尼龙绳的外部设置有氟树脂包覆层。
耐弯曲防断芯拖链电缆的制造方法，具体步骤如下：
步骤一：通过绞合工艺获得内导体，再通过挤出工艺在内导体上挤包氟树脂绝缘层；
步骤二：通过挤出工艺在尼龙绳上挤包氟树脂包覆层；
步骤三：通过绞合工艺将绝缘线芯和抗拉内芯绞合获得缆芯；
步骤四：通过缠绕工艺在缆芯上缠绕出氟树脂绕包带；
步骤五：通过挤出工艺在氟树脂绕包带上挤包双层聚乙烯阻水层；
步骤六：通过缠绕工艺依次在双层聚乙烯阻水层上缠绕铜塑复合带绕包屏蔽层和铜线屏蔽缠绕层；
步骤七：通过挤出工艺在铜线屏蔽缠绕层上挤包内护套、耐热层和外护套，制备出拖链电缆。
本发明的有益效果：
1.在内导体的股线构成中，加入高强度的芳纶丝和镀锡铜单丝进行同心绞合，大幅度提高抗拉强度，同时，在成缆时填入抗拉内芯，使抗拉断力成倍提高，有效避免了断芯常发现象。
2.股线的绞向与复绞线的绞向相反，复绞线的绞向与缆芯绞向相反，能够降低构成股线的镀锡铜单丝的扭转应力，抑制单丝变形，提高复绞线的稳定性，有助于提高电缆的耐弯曲、耐挠曲性能。
3.电缆外部为具有高韧性、高强度、高耐磨性能的氯丁橡胶内护套、氯化聚乙烯耐热层和氯丁橡胶外护套的三层粘接体，机械强度高，有效减少护套开裂现象，氯丁橡胶内护套和氯丁橡胶外护套之间增加氯化聚乙烯耐热层不但有益于提高粘接性能，而且增加了耐热性能。
4.所述铜线屏蔽缠绕层，有助于保证电缆的柔韧性及提高抗拖拽性能。
5.采用双层聚乙烯阻水层，为MDPE阻水内层和LDPE阻水外层双层共挤成型结构，优化设计内外层厚度比例，即使在湿度明显偏高的工况条件下，阻水层依然能够有效的阻止水分侵入内部，保护电缆的绝缘电气特性，延长使用寿命。
6.通过结构优化设计，铜塑复合带绕包屏蔽层采用铜塑复合带绕包而成，铜塑复合带包括铜箔带和EEA补强填充层，使得该屏蔽层不易出现断裂现象，提高电缆使用的可靠性，采用间隙绕包，降低了制造成本。
7.铜线屏蔽缠绕层为铜线编织布与尼龙布并绕结构，节省铜线用量降低制作成本的同时，确保铜线屏蔽缠绕层与铜塑复合带绕包屏蔽层良好接触，进而保证有效的屏蔽性能。铜线屏蔽缠绕层采用聚酯纤维铜箔丝和镀锡铜单丝互为逆向螺旋缠绕结构，柔韧性及耐挠曲性更好，具有良好的电磁屏蔽效果。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作以简单地介绍。
图1为本申请实施例的断面结构示意图；
图2为本申请实施例的双层聚乙烯阻水层的断面结构示意图；
图3为本申请实施例的铜塑复合带的断面结构示意图；
图4为本申请实施例的抗拉内芯的断面结构示意图。
附图标记：1-绝缘线芯，2-抗拉内芯，21-尼龙绳，22-氟树脂包覆层，3-氟树脂绕包带，4-双层聚乙烯阻水层，41-MDPE阻水内层，42-LDPE阻水外层，5-铜塑复合带绕包屏蔽层，6-铜线屏蔽缠绕层，7-内护套，8-耐热层，9-外护套，10-内导体，11-氟树脂绝缘层，12-树脂填充芯材，13-铜箔带，14-EEA补强填充层。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
如图1所示，本发明实施例的耐弯曲防断芯拖链电缆，包括若干绝缘线芯1和一个抗拉内芯2，所述绝缘线芯1以所述抗拉内芯2为中心周向环绕布置为至少一层并共同同心绞合构成缆芯，图中所示为三层绝缘线芯1。在一个实施方式中，如图4所示，所述抗拉内芯2包括尼龙绳21和所述尼龙绳21的外部设置有氟树脂包覆层22。所述绝缘线芯1包括内导体10和包覆在所述内导体10外部的氟树脂绝缘层11，所述内导体10为若干股线同心绞合构成复绞线，所述股线为若干镀锡铜单丝和若干芳纶丝同心绞合构成，所述股线的绞向与所述复绞线的绞向相反，所述复绞线的绞向与所述缆芯绞向相反。
所述缆芯外部依次设置有氟树脂绕包带3、双层聚乙烯阻水层4、铜塑复合带绕包屏蔽层5、铜线屏蔽缠绕层6、内护套7、耐热层8和外护套9，进一步的，所述缆芯和所述氟树脂绕包带3之间的空间内填充有树脂填充芯材12，比如，所述树脂填充芯材12为EVA填充芯材或PP填充芯材。
如图2所示，所述双层聚乙烯阻水层4由内侧的MDPE阻水内层41和外侧的LDPE阻水外层42共挤成型。
如图3所示，所述铜塑复合带绕包屏蔽层5为铜塑复合带间隙绕包结构，所述铜塑复合带由铜箔带13和与所述铜箔带13内侧面热合成一体的EEA补强填充层14构成。
具体的说，在一个实施方式中，所述铜线屏蔽缠绕层6可以是聚酯纤维铜箔丝和镀锡铜单丝互为逆向螺旋缠绕编织构成。在另一个实施方式中，所述铜线屏蔽缠绕层6为铜线编织布绕包结构，所述铜线编织布为聚酯纤维平织基布上纵向编织有镀锡铜丝。在又一个实施方式中，所述铜线屏蔽缠绕层6为铜线编织布与尼龙布并绕结构，所述铜线编织布为聚酯纤维平织基布上纵向编织有镀锡铜丝。
在一个实施方式中，所述内护套7和所述外护套9均为氯丁橡胶护套，所述耐热层8为氯化聚乙烯材质。
耐弯曲防断芯拖链电缆的制造方法，具体步骤如下：
步骤一：通过绞合工艺获得内导体10，再通过挤出工艺在内导体10上挤包氟树脂绝缘层11；
步骤二：通过挤出工艺在尼龙绳21上挤包氟树脂包覆层22；
步骤三：通过绞合工艺将绝缘线芯1和抗拉内芯2绞合获得缆芯；
步骤四：通过缠绕工艺在缆芯上缠绕出氟树脂绕包带3；
步骤五：通过挤出工艺在氟树脂绕包带3上挤包双层聚乙烯阻水层4；
步骤六：通过缠绕工艺依次在双层聚乙烯阻水层4上缠绕铜塑复合带绕包屏蔽层5和铜线屏蔽缠绕层6；
步骤七：通过挤出工艺在铜线屏蔽缠绕层6上挤包内护套7、耐热层8和外护套9，制备出拖链电缆。
以上，仅为本申请的具体实施方式，但申请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申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以权利要求的保护范围为准。

Claims (10)

1.耐弯曲防断芯拖链电缆，其特征是：包括若干绝缘线芯(1)和一个抗拉内芯(2)，所述绝缘线芯(1)以所述抗拉内芯(2)为中心周向环绕布置为至少一层并共同同心绞合构成缆芯，所述缆芯外部依次设置有氟树脂绕包带(3)、双层聚乙烯阻水层(4)、铜塑复合带绕包屏蔽层(5)、铜线屏蔽缠绕层(6)、内护套(7)、耐热层(8)和外护套(9)，所述绝缘线芯(1)包括内导体(10)和包覆在所述内导体(10)外部的氟树脂绝缘层(11)，所述内导体(10)为若干股线同心绞合构成复绞线，所述股线为若干镀锡铜单丝和若干芳纶丝同心绞合构成，所述股线的绞向与所述复绞线的绞向相反，所述复绞线的绞向与所述缆芯绞向相反。
2.根据权利要求1所述的耐弯曲防断芯拖链电缆，其特征是：所述缆芯和所述氟树脂绕包带(3)之间的空间内填充有树脂填充芯材(12)。
3.根据权利要求1所述的耐弯曲防断芯拖链电缆，其特征是：所述双层聚乙烯阻水层(4)由内侧的MDPE阻水内层(41)和外侧的LDPE阻水外层(42)共挤成型。
4.根据权利要求1所述的耐弯曲防断芯拖链电缆，其特征是：所述铜塑复合带绕包屏蔽层(5)为铜塑复合带间隙绕包结构，所述铜塑复合带由铜箔带(13)和与所述铜箔带(13)内侧面热合成一体的EEA补强填充层(14)构成。
5.根据权利要求1所述的耐弯曲防断芯拖链电缆，其特征是：所述铜线屏蔽缠绕层(6)为聚酯纤维铜箔丝和镀锡铜单丝互为逆向螺旋缠绕编织构成。
6.根据权利要求1所述的耐弯曲防断芯拖链电缆，其特征是：所述铜线屏蔽缠绕层(6)为铜线编织布绕包结构，所述铜线编织布为聚酯纤维平织基布上纵向编织有镀锡铜丝。
7.根据权利要求1所述的耐弯曲防断芯拖链电缆，其特征是：所述铜线屏蔽缠绕层(6)为铜线编织布与尼龙布并绕结构，所述铜线编织布为聚酯纤维平织基布上纵向编织有镀锡铜丝。
8.根据权利要求1所述的耐弯曲防断芯拖链电缆，其特征是：所述内护套(7)和所述外护套(9)均为氯丁橡胶护套，所述耐热层(8)为氯化聚乙烯材质。
9.根据权利要求1所述的耐弯曲防断芯拖链电缆，其特征是：所述抗拉内芯(2)包括尼龙绳(21)和所述尼龙绳(21)的外部设置有氟树脂包覆层(22)。
10.耐弯曲防断芯拖链电缆的制造方法，其特征是：具体步骤如下：
步骤一：通过绞合工艺获得内导体(10)，再通过挤出工艺在内导体(10)上挤包氟树脂绝缘层(11)；
步骤二：通过挤出工艺在尼龙绳(21)上挤包氟树脂包覆层(22)；
步骤三：通过绞合工艺将绝缘线芯(1)和抗拉内芯(2)绞合获得缆芯；
步骤四：通过缠绕工艺在缆芯上缠绕出氟树脂绕包带(3)；
步骤五：通过挤出工艺在氟树脂绕包带(3)上挤包双层聚乙烯阻水层(4)；
步骤六：通过缠绕工艺依次在双层聚乙烯阻水层(4)上缠绕铜塑复合带绕包屏蔽层(5)和铜线屏蔽缠绕层(6)；
步骤七：通过挤出工艺在铜线屏蔽缠绕层(6)上挤包内护套(7)、耐热层(8)和外护套(9)，制备出拖链电缆。
CN201911069596.XA 2019-11-05 2019-11-05 耐弯曲防断芯拖链电缆及其制备方法 Pending CN110706850A (zh)

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Publication number Priority date Publication date Assignee Title
CN112908568A (zh) * 2021-01-18 2021-06-04 广东环威电线电缆股份有限公司 耐弯曲拖链电缆的制作方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112908568A (zh) * 2021-01-18 2021-06-04 广东环威电线电缆股份有限公司 耐弯曲拖链电缆的制作方法

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