WO2022252537A1 - 一种铜排制作方法及铜排结构 - Google Patents

一种铜排制作方法及铜排结构 Download PDF

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Publication number
WO2022252537A1
WO2022252537A1 PCT/CN2021/136111 CN2021136111W WO2022252537A1 WO 2022252537 A1 WO2022252537 A1 WO 2022252537A1 CN 2021136111 W CN2021136111 W CN 2021136111W WO 2022252537 A1 WO2022252537 A1 WO 2022252537A1
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copper
tube
copper bar
bent
bending
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PCT/CN2021/136111
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English (en)
French (fr)
Inventor
陈俊
郑冬伟
陈乐�
陈昌荣
廖汉卿
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广东福德电子有限公司
株洲福德轨道交通研究院有限公司
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Publication of WO2022252537A1 publication Critical patent/WO2022252537A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
    • H01B5/02—Single bars, rods, wires, or strips

Definitions

  • the invention relates to the technical field of copper bars, in particular to a copper bar manufacturing method and a copper bar structure.
  • Copper bar refers to a long conductor made of copper material with a rectangular or chamfered (rounded) rectangular cross-section, generally called copper bus bar, copper bus bar or copper bus bar, and grounding copper bar.
  • Copper busbar is a high-current conductive product, which is suitable for electrical engineering such as high and low voltage electrical appliances, switch contacts, power distribution equipment, and busway. It is also widely used in ultra-high current electrolytic smelting projects such as metal smelting, electrochemical plating, and chemical caustic soda.
  • one of the purposes of the present invention is to provide a method for manufacturing copper bars, which is convenient for forming copper bars bent along the board direction, and the quality of the formed copper bars is high.
  • the second object of the present invention is to provide a copper bar structure whose bends are not easily torn.
  • the present invention provides the following technical solutions:
  • a method for manufacturing a copper bar comprising the following steps:
  • Material selection step prepare a copper tube with a preset radial cross-sectional area, and determine the position of the copper tube to be bent;
  • Bending step bend the copper tube from the position to be bent according to a preset angle to form a bent tube
  • Flattening step flatten the bent pipe radially to form a flat copper bar.
  • the copper tube in the bending step, is bent into an L-shape, U-shape or Z-shape.
  • a step of drilling holes is also included, in which holes are drilled at both ends of the copper bar to form wiring holes.
  • a tube drawing step is also included between the material selection step and the bending step to elongate the position of the copper tube to be bent so that the diameter of the position to be bent is reduced.
  • a limit wheel is provided inside the position of the copper tube to be bent, so that the curved position of the copper tube after bending is transitioned into an arc.
  • the copper tube is deformed and flattened by radial heavy pressure, and then the copper tube is shaped by radial light pressure.
  • the copper tube is cast and formed, and the copper tube is divided into a lower semi-circular tube and an upper semi-circular tube along a section passing through the central axis, and the lower semi-circular tube is a tube of equal wall thickness.
  • the upper semi-circular tube is a tube with a gradually changing wall thickness, and the wall thickness gradually increases along the direction close to the lower semi-circular tube, and the wall thickness of the joint between the lower semi-circular tube and the upper semi-circular tube is equal.
  • the copper bar structure manufactured according to the above method includes two plate bodies and a U-shaped connecting portion, the two plate bodies are arranged side by side, and the ends of the two plate bodies on the same side are connected by the connecting portion, so that the plate body and the connecting portion Together they form an integral structure with an elliptical cross-section.
  • the thicknesses of the two plate bodies are different.
  • the copper bar production method created by the present invention uses the method of bending the copper tube first and then flattening it.
  • the copper tube is easy to bend and is not prone to the problem of easy tearing of the traditional copper plate, and can produce various A curved shape of the copper bar, saving costs.
  • the copper bar structure manufactured according to the method has a double-layer board body structure, high strength and stable structure.
  • FIG. 1 is a schematic diagram of a copper bar structure in the prior art.
  • Fig. 2 is a schematic structural view of the copper tube in the embodiment after being bent.
  • Fig. 3 is a schematic diagram of the copper bar structure in the embodiment.
  • Fig. 4 is a schematic structural diagram of another copper bar in the embodiment.
  • Material selection step Prepare a copper tube with a radial cross-sectional area of a preset value.
  • the preset value is calculated and determined based on the outer diameter and inner diameter of the copper tube, and the position to be bent of the copper tube is determined and marked;
  • Bending step bend the copper tube from the position to be bent according to a preset angle to form a bent tube as shown in Figure 2;
  • Flattening step flatten the bent pipe radially to form a flat copper bar
  • the copper bar structure can be changed to a U-shape as shown in Figure 4, or another Z-shape or other shapes.
  • the copper bar structure manufactured according to the above method is taken as an example in Fig. 3, which includes two plate bodies 1 and a U-shaped connecting portion 2, and the two plate bodies 1 are arranged side by side with a gap between them. The ends of the same side of the board body 1 are connected by the connecting portion 2, so that the board body 1 and the connecting portion 2 together form an integral structure with an elliptical cross-section.
  • this embodiment uses the method of bending the copper tube first and then flattening it.
  • the copper tube is easy to bend and is not prone to the problem of easy tearing of the traditional copper plate, and copper bars of various curved shapes can be produced according to requirements. , save cost, solve the problem that the traditional plate-shaped copper bar is difficult to bend along the direction of the plate, or easy to tear when bent, and solve the problem that the bending arc is too small to be bent.
  • the copper bar structure manufactured according to the method has a double-layer board body 1 structure, high strength and stable structure.
  • the copper bar will generate heat and have a tendency to deform during use.
  • the traditional plate-shaped copper bar structure is difficult to deform, resulting in internal splits or even burning fractures of the copper bar.
  • the double-layer copper bar of this embodiment After being heated, the board body 1 can be deformed outwards, which acts as a buffer and will not be burned. Under the action of the U-shaped connecting part 2, the board body 1 will return to its original shape when it is not in use.
  • the above method can be further optimized as follows: between the material selection step and the bending step, there is also a tube drawing step, elongating the position of the copper tube to be bent, so that the diameter of the position to be bent is reduced, and the small diameter
  • the copper pipe segment facilitates bending with a smaller bending radius, and is more conducive to the production of copper bars of different sizes and shapes.
  • the above method can be further optimized as follows: in the bending step, a limit wheel is set on the inner side of the copper tube to be bent, so that the arc transition of the bend of the copper tube after bending can keep the overall appearance of the copper bar , smooth surface.
  • the above method can be further optimized as follows: in the flattening step, the copper tube is deformed and flattened radially once to obtain a flat copper bar with a rough shape, and then the copper tube is lightly pressed radially to shape and flattened. Keep pressing for a few seconds to keep the upper and lower plate bodies of the copper bar in shape.
  • the above method can be further optimized as follows: in the material selection step, the copper tube with an integrated structure is first cast, and the copper tube is divided into a lower semi-circular tube and an upper semi-circular tube along the section passing through the central axis.
  • the lower semi-circular tube is a tube of equal wall thickness
  • the upper semi-circular tube is a tube with a gradual wall thickness
  • the wall thickness gradually increases along the direction close to the lower semi-circular tube
  • the distance between the lower semi-circular tube and the upper semi-circular tube The joints have equal wall thickness, and this structure can make it easier to flatten the thinner copper tube along the radial direction in the flattening step, and the flattening direction is easier to control, so as to obtain the expected copper bar.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Metal Extraction Processes (AREA)

Abstract

本发明涉及铜排技术领域，具体涉及一种铜排制作方法及铜排结构，方法包括以下步骤：选材步骤：预备径向截面积为预设值的铜管，并确定铜管的待折弯位置；弯曲步骤：把铜管从待折弯位置按预设角度折弯，形成弯管；压扁步骤：沿径向压扁弯管，形成扁平的铜排。利用铜管先折弯后压扁的方式，铜管便于折弯且不易出现传统铜板易撕裂的问题，能够根据需求制作出各种弯曲形状的铜排，节省成本。根据该方法制造的铜排结构具有双层板本体结构，强度高，结构稳定。

Description

一种铜排制作方法及铜排结构 技术领域
本发明创造涉及铜排技术领域，具体涉及一种铜排制作方法及铜排结构。
 背景技术
铜排是指由铜材质制作的、截面为矩形或倒角(圆角)矩形的长导体，一般被称为铜母线、铜母排或铜汇流排、接地铜排。
铜排是一种大电流导电产品，适用于高低压电器、开关触头、配电设备、母线槽等电器工程，也广泛用于金属冶炼、电化电镀、化工烧碱等超大电流电解冶炼工程。
现有对于L形、U形或Z形等折弯的铜排，一般通过折弯机来压弯。而毛坯长条状的铜板在板的法线方向上很容易折弯（如纸的弯折方向），但是对于如图1所示的铜板沿着板的方向（如纸的撕裂方向）折弯则较为困难，操作稍有不当容易把铜板在折弯处撕裂，形成撕裂缺口H，操作不便，而且造成不良品率提高。
 技术问题
现有对于L形、U形或Z形等折弯的铜排，一般通过折弯机来压弯。而毛坯长条状的铜板在板的法线方向上很容易折弯（如纸的弯折方向），但是对于如图1所示的铜板沿着板的方向（如纸的撕裂方向）折弯则较为困难，操作稍有不当容易把铜板在折弯处撕裂，形成撕裂缺口H，操作不便，而且造成不良品率提高。
 技术解决方案
针对现有技术存在上述技术问题，本发明创造的目的之一提供一种铜排制作方法，便于成型沿着板方向折弯的铜排，且成型后的铜排质量高。
针对现有技术存在上述技术问题，本发明创造的目的之二提供一种铜排结构，其铜排的折弯处不易撕裂。
为实现上述目的，本发明创造提供以下技术方案：
提供一种铜排制作方法，包括以下步骤：
选材步骤：预备径向截面积为预设值的铜管，并确定铜管的待折弯位置；
弯曲步骤：把铜管从待折弯位置按预设角度折弯，形成弯管；
压扁步骤：沿径向压扁弯管，形成扁平的铜排。
作为上述铜排制作方法的进一步改进，在弯曲步骤中，把铜管弯曲成L形、U形或Z形。
作为上述铜排制作方法的进一步改进，压扁步骤之后，还包括打孔步骤，在铜排的两端部钻孔，形成接线孔。
作为上述铜排制作方法的进一步改进，在选材步骤和弯曲步骤之间还包括拉管步骤，把铜管的待折弯位置拉长，以使得待折弯位置的直径减小。
作为上述铜排制作方法的进一步改进，在弯曲步骤中，在铜管的待折弯位置的内侧设置限位轮，以使得铜管折弯后弯曲之处圆弧过渡。
作为上述铜排制作方法的进一步改进，在压扁步骤中，先径向重压铜管变形压扁，再径向轻压铜管整形。
作为上述铜排制作方法的进一步改进，在选材步骤中，铸造成型铜管，且把铜管沿穿过中心轴的截面划分为下半圆管和上半圆管，下半圆管为等壁厚管，上半圆管为壁厚渐变管，且沿靠近下半圆管方向壁厚逐渐增大，且下半圆管和上半圆管之间的衔接之处等壁厚。
根据上述方法制造的铜排结构，包括两条板本体和U形的衔接部，两条板本体相互并列布置，两条板本体的同侧端部通过衔接部连接，从而使得板本体和衔接部共同形成断面呈椭圆形的一体结构。
优选的，两条板本体的厚度不同。
 有益效果
本发明创造的铜排制作方法，与现有技术相比，利用铜管先折弯后压扁的方式，铜管便于折弯且不易出现传统铜板易撕裂的问题，能够根据需求制作出各种弯曲形状的铜排，节省成本。根据该方法制造的铜排结构具有双层板本体结构，强度高，结构稳定。
 附图说明
图1为现有技术铜排结构的示意图。
图2为实施例中的铜管弯曲后的结构示意图。
图3为实施例中的铜排结构示意图。
图4为实施例中另一种形状铜排的结构示意图。
附图标记：
板本体1、衔接部2、接线孔3。
 本发明的实施方式
以下结合具体实施例及附图对本发明创造进行详细说明。
本实施例的铜排结构，包括以下步骤：
选材步骤：预备径向截面积为预设值的铜管，该预设值以铜管的外径和内径为参数计算确定，并确定铜管的待折弯位置，做好标记；
弯曲步骤：把铜管从待折弯位置按预设角度折弯，形成如图2所示的弯管；
压扁步骤：沿径向压扁弯管，形成扁平的铜排；
打孔步骤，在铜排的两端部钻孔，形成接线孔3，形成如图3所示的L形铜排成品。实际中，铜排结构可以改为如图4所示的U形，或另外的Z形等形状。
由上可知，根据上述方法制造的铜排结构以图3为例，其包括两条板本体1和U形的衔接部2，两条板本体1相互并列布置，之间留有间隙，两条板本体1的同侧端部通过衔接部2连接，从而使得板本体1和衔接部2共同形成断面呈椭圆形的一体结构。
与现有技术相比，本实施例利用铜管先折弯后压扁的方式，铜管便于折弯且不易出现传统铜板易撕裂的问题，能够根据需求制作出各种弯曲形状的铜排，节省成本，解决了传统板状铜排沿板的方向难以折弯，或折弯易撕裂的问题，解决了折弯圆弧过小而无法折弯的问题。根据该方法制造的铜排结构具有双层板本体1结构，强度高，结构稳定。
再者，铜排作为电连接的部件，在使用过程中会产生热量而有形变趋势，传统板状的铜排结构难以变形而导致铜排内部分裂甚至灼烧断裂，而本实施例的双层的板本体1，在受热后板本体1能够朝外产生形变，起到缓冲的作用而不至于烧断，在U形的衔接部2作用下，非使用状态会使板本体1恢复原状。
实际中，上述方法还可以进一步优化为：在选材步骤和弯曲步骤之间还包括拉管步骤，把铜管的待折弯位置拉长，以使得待折弯位置的直径减小，小直径的铜管节段便于实现更小弯曲半径的折弯，更利于制作出不同大小不同形状的铜排。
实际中，上述方法还可以进一步优化为：在弯曲步骤中，在铜管的待折弯位置的内侧设置限位轮，以使得铜管折弯后弯曲之处圆弧过渡，保持铜排整体美观，表面顺滑。
实际中，上述方法还可以进一步优化为：在压扁步骤中，先径向一次重压铜管变形压扁，得到大致形状的扁平状铜排，然后再径向轻压铜管整形，轻压保持压紧若干秒，使铜排的上下板本体保持定型。
实际中，上述方法还可以进一步优化为：在选材步骤中，先铸造成型一体化结构的铜管，且把铜管沿穿过中心轴的截面划分为下半圆管和上半圆管，铸造时通过调整模具的模腔形状，使得下半圆管为等壁厚管，上半圆管为壁厚渐变管，且沿靠近下半圆管方向壁厚逐渐增大，且下半圆管和上半圆管之间的衔接之处等壁厚，该结构能够使得在压扁步骤中，铜管较薄的位置沿径向更容易被压扁，且压扁的方向更容易控制，从而得到预想的铜排。
最后应当说明的是，以上实施例仅用以说明本发明创造的技术方案，而非对本发明创造保护范围的限制，尽管参照较佳实施例对本发明创造作了详细地说明，本领域的普通技术人员应当理解，可以对本发明创造的技术方案进行修改或者等同替换，而不脱离本发明技术方案的实质和范围。

Claims (9)

  1. 一种铜排制作方法，其特征在于：包括以下步骤：
    选材步骤：预备径向截面积为预设值的铜管，并确定铜管的待折弯位置；
    弯曲步骤：把铜管从待折弯位置按预设角度折弯，形成弯管；
    压扁步骤：沿径向压扁弯管，形成扁平的铜排。
  2. 根据权利要求1所述的一种铜排制作方法，其特征是：在弯曲步骤中，把铜管弯曲成L形、U形或Z形。
  3. 根据权利要求1所述的一种铜排制作方法，其特征是：在压扁步骤之后，还包括打孔步骤，在铜排的两端部钻孔，形成接线孔。
  4. 根据权利要求1所述的一种铜排制作方法，其特征是：在选材步骤和弯曲步骤之间还包括拉管步骤，把铜管的待折弯位置拉长，以使得待折弯位置的直径减小。
  5. 根据权利要求1所述的一种铜排制作方法，其特征是：在弯曲步骤中，在铜管的待折弯位置的内侧设置限位轮，以使得铜管折弯后弯曲之处圆弧过渡。
  6. 其特征是：在压扁步骤中，先径向重压铜管变形压扁，再径向轻压铜管整形。
  7. 根据权利要求1所述的一种铜排制作方法，其特征是：在选材步骤中，铸造成型铜管，且把铜管沿穿过中心轴的截面划分为下半圆管和上半圆管，下半圆管为等壁厚管，上半圆管为壁厚渐变管，且沿靠近下半圆管方向壁厚逐渐增大，且下半圆管和上半圆管之间的衔接之处等壁厚。
  8. 根据权利要求1至权利要求7任一项所述的一种铜排制作方法制造的铜排结构，其特征在于：包括两条板本体和U形的衔接部，两条板本体相互并列布置，两条板本体的同侧端部通过衔接部连接，从而使得板本体和衔接部共同形成断面呈椭圆形的一体结构。
  9. 根据权利要求1所述的铜排结构，其特征是：两条板本体的厚度不同。
PCT/CN2021/136111 2021-06-04 2021-12-07 一种铜排制作方法及铜排结构 WO2022252537A1 (zh)

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