CN101767454B - 聚丙烯软芯焊接方法及其焊接设备、专用整型工具 - Google Patents

聚丙烯软芯焊接方法及其焊接设备、专用整型工具 Download PDF

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CN101767454B
CN101767454B CN2010101030260A CN201010103026A CN101767454B CN 101767454 B CN101767454 B CN 101767454B CN 2010101030260 A CN2010101030260 A CN 2010101030260A CN 201010103026 A CN201010103026 A CN 201010103026A CN 101767454 B CN101767454 B CN 101767454B
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CN101767454A (zh
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张珣
赵建勋
高奇
常小刚
梅思
王传明
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Yankuang Group Corp Ltd
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    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
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    • B29C66/52—Joining tubular articles, bars or profiled elements
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    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/84—Specific machine types or machines suitable for specific applications
    • B29C66/861—Hand-held tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29C2793/009—Shaping techniques involving a cutting or machining operation after shaping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
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    • B29C66/03—After-treatments in the joint area
    • B29C66/032—Mechanical after-treatments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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Abstract

本发明公开了一种聚丙烯软芯焊接方法及其焊接设备、专用整型工具。该聚丙烯软芯焊接方法，其特征在于：先对断裂的聚丙烯软芯端头进行加工，使断面平整；焊接设备依靠两个横向推动气缸将断裂的聚丙烯软芯分别夹持住，依靠两个纵向推动气缸将横向夹紧的聚丙烯软芯断面推动靠近，直至两个断面接触到焊接设备的加热板上，然后将加热板抽出，纵向推动气缸把加热后的断面继续推进接触并给其压力，焊接完成，将聚丙烯软芯从焊接设备撤出冷却至室温。本发明能焊接断裂的钢丝增强液压橡胶软管用pp软芯，通过焊接减少了聚丙烯软芯的报废量，节省了成本；焊接部分抗拉和抗弯强度超过pp软芯的本体强度，符合生产要求。

Description

聚丙烯软芯焊接方法及其焊接设备、专用整型工具
(一)技术领域
本发明涉及一种聚丙烯软芯焊接方法，特别涉及一种钢丝增强液压橡胶软管用聚丙烯软芯焊接方法及其焊接设备、专用整型工具。
(二)背景技术
钢丝增强液压橡胶软管生产过程中使用的内孔模具——软芯，一般采用pp(聚丙烯)材质并有很小中心孔的棒材，因其材质软，弯曲半径小，在生产过程中可盘卷，不受生产空间限制所以能生产出大长度产品。在钢丝增强液压橡胶软管行业已广泛推广取代原来的钢质芯棒。目前，钢丝增强液压橡胶管用pp软芯，在生产过程中一旦发生断裂就不得不报废，增加了生产成本。
(三)发明内容
本发明为了弥补现有技术的不足，提供了一种聚丙烯软芯焊接方法及其焊接设备、专用整型工具，减少使用过程中钢丝增强液压橡胶软管用pp软芯的断裂报废。
本发明是通过如下技术方案实现的：
一种聚丙烯软芯焊接方法，其特征在于：先对断裂的聚丙烯软芯端头进行加工，使断面平整，然后使用焊接设备进行焊接；焊接设备依靠两个横向推动气缸将断裂的聚丙烯软芯分别夹持住，依靠两个纵向推动气缸将横向夹紧的聚丙烯软芯断面推动靠近，直至两个断面接触到焊接设备的加热板上，此时加热板的温度为220℃-270℃，加热2-5分钟，将加热板抽出，纵向推动气缸把加热后的断面继续推进接触并给其0.5-1MPa的压力，时间3-7分钟，焊接完成，横向推动气缸泄压，将聚丙烯软芯从焊接设备撤出冷却至室温。
本发明的聚丙烯软芯焊接方法，通过专用整型工具对聚丙烯软芯的焊接部分进行整型：专用整型工具有两个半圆型的夹具，夹具合拢时其内径与被整型聚丙烯软芯外径相同，夹具的其中一半内嵌有刀刃高度可调的整型刀，整型时其刃口与夹具的内表面高度相同；将软芯夹持在专用整型工具间旋转，焊点的高处部分被削平；必要时，使用100目砂纸对经专用整型工具整型后的焊点进行打磨。
本发明的聚丙烯软芯焊接方法的焊接设备，包括两个相对设置的、用于夹持聚丙烯软芯的夹紧模板，两夹紧模板之间为可上下移动的加热板，夹紧模板的一端安装有横向推动气缸，夹紧模板的外侧安装有纵向推动气缸；所述加热板连接有PLC控制系统。
本发明的聚丙烯软芯焊接方法的专用整型工具，包括两个相互铰接的半圆型夹具，夹具合拢时其内径与被整型聚丙烯软芯外径相同，夹具的其中一半内嵌有刀刃高度可调的整型刀，整型刀的刃口与夹具的内表面高度相同；所述两个夹具上分别安装有手柄。
本发明能焊接断裂的钢丝增强液压橡胶软管用pp软芯，通过焊接减少了聚丙烯软芯的报废量，节省了成本；焊接部分抗拉和抗弯强度超过pp软芯的本体强度，符合生产要求。
(四)附图说明
下面结合附图对本发明作进一步的说明。
图1为本发明的焊接方法的工艺流程示意图。
图2为本发明的焊接设备的结构示意图。
图3为本发明的专用整型工具的结构示意图。
图中，1聚丙烯软芯，2夹紧模板，3加热板，4横向推动气缸，5纵向推动气缸，6夹具，7整型刀，8手柄。
(五)具体实施方式
实施例1：
如图1所示，聚丙烯软芯焊接的过程如下：先对断裂的pp软芯端头进行加工，使断面平整，然后使用专用焊接设备进行焊接；专用焊接设备依靠两个横向推动气缸将断裂的软芯分别夹持住，夹持压力为1.1MPa，依靠两个纵向推动气缸将横向夹紧的软芯断面推动靠近，直至两个断面接触到焊接设备的中心加热板上；此时加热板的温度为220℃-230℃，加热5分钟，由PLC控制系统控制的加热板自动抽出，纵向推动气缸把加热后的断面继续推进接触并给其0.5-0.6MPa的压力，7分钟焊接完成，横向推动气缸泄压，将软芯从焊接设备撤出冷却至室温，通过专用的整型设备对焊接部分进行整型；专用整型设备有两个半圆型的夹具夹具合拢时其内径与被整型软芯外径相同，夹具的其中一半内嵌有整型刀，刀刃高度可调，整型时其刃口与半圆的内表面高度相同，保护软芯其他部分不受损伤。将软芯夹持在整型工具间旋转，焊点的高处部分就被削平，必要时可以在根据整型情况使用100目砂纸进行打磨。
实施例2：
如图1所示，聚丙烯软芯焊接的过程如下：先对断裂的聚丙烯软芯端头进行加工，使断面平整，然后使用焊接设备进行焊接；焊接设备依靠两个横向推动气缸将断裂的聚丙烯软芯分别夹持住，依靠两个纵向推动气缸将横向夹紧的聚丙烯软芯断面推动靠近，直至两个断面接触到焊接设备的加热板上，此时加热板的温度为260℃-270℃，加热3分钟，将加热板抽出，纵向推动气缸把加热后的断面继续推进接触并给其0.8-1MPa的压力，时间3分钟，焊接完成，横向推动气缸泄压，将聚丙烯软芯从焊接设备撤出冷却至室温。通过专用整型工具对聚丙烯软芯的焊接部分进行整型：专用整型工具有两个半圆型的夹具，夹具合拢时其内径与被整型聚丙烯软芯外径相同，夹具的其中一半内嵌有刀刃高度可调的整型刀，整型时其刃口与夹具的内表面高度相同；将软芯夹持在专用整型工具间旋转，焊点的高处部分被削平。
实施例3：
图2为本发明的焊接设备的具体实施例。该实施例包括两个相对设置的、用于夹持聚丙烯软芯1的夹紧模板2，两夹紧模板2之间为可上下移动的加热板3，夹紧模板2的一端安装有横向推动气缸4，夹紧模板2的外侧安装有纵向推动气缸5；加热板3连接有PLC控制系统。使用时，依靠两个横向推动气缸4将断裂的聚丙烯软芯1分别夹持住，依靠两个纵向推动气缸5将横向夹紧的聚丙烯软芯1断面推动靠近，直至两个断面接触到焊接设备的加热板3上，此时加热板3的温度为240℃-250℃，加热2分钟，将加热板3抽出，纵向推动气缸5把加热后的断面继续推进接触并给其0.7-0.7MPa的压力，时间5分钟，焊接完成，横向推动气缸4泄压，将聚丙烯软芯1从焊接设备撤出冷却至室温。
实施例4：
图3为本发明的专用整型工具的具体实施例。该实施例包括两个相互铰接的半圆型夹具6，夹具6合拢时其内径与被整型聚丙烯软芯1外径相同，夹具6的其中一半内嵌有刀刃高度可调的整型刀7，整型刀7的刃口与夹具6的内表面高度相同；两个夹具6上分别安装有手柄8。使用时，将聚丙烯软芯1夹持在两个半圆型夹具6间旋转，焊点的高处部分被削平。

Claims (3)

1.一种聚丙烯软芯焊接方法，其特征在于：
   先对断裂的聚丙烯软芯端头进行加工，使断面平整，然后使用焊   接设备进行焊接；焊接设备依靠两个横向推动气缸将断裂的聚丙烯软芯分别夹持住,依靠两个纵向推动气缸将横向夹紧的聚丙烯软芯断面推动靠近，直至两个断面接触到焊接设备的加热板上，此时加热板的温度为220℃-270℃，加热2-5分钟，将加热板抽出，纵向推动气缸把加热后的断面继续推进接触并给其0.5-1MPa的压力，时间3-7分钟，焊接完成，横向推动气缸泄压，将聚丙烯软芯从焊接设备撤出冷却至室温；
通过专用整型工具对聚丙烯软芯的焊接部分进行整型：专用整型工具有两个半圆型的夹具，夹具合拢时其内径与被整型聚丙烯软芯外径相同，夹具的其中一半内嵌有刀刃高度可调的整型刀，整型时其刃口与夹具的内表面高度相同；将软芯夹持在专用整型工具间旋转，焊点的高处部分被削平；
所述焊接设备包括两个相对设置的、用于夹持聚丙烯软芯（1）的夹紧模板（2），两夹紧模板（2）之间为可上下移动的加热板（3），夹紧模板（2）的一端安装有横向推动气缸（4），夹紧模板（2）的外侧安装有纵向推动气缸（5）。
2.根据权利要求1所述的聚丙烯软芯焊接方法，其特征在于：所述加热板（3）连接有PLC控制系统。
3.根据权利要求1所述的聚丙烯软芯焊接方法，其特征在于：使用100目砂纸对经专用整型工具整型后的焊点进行打磨。
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