CN-122025281-A - Cladding welding equipment for producing copper clad steel wires

Abstract

The invention provides cladding welding equipment for producing copper clad steel wires, which relates to the technical field of metal wire production, wherein a feeding part, a forming part and a welding part are sequentially arranged on a frame, the section of a copper strip, which is vertical to the length direction of the copper strip, is called a first section, a bending part is further arranged between the feeding part and the forming part, before the copper strip passes through the bending part, the first section is wholly flat and takes a strip shape, after the copper strip passes through the bending part, the first section of the copper strip is bent into at least three continuous bending sections which are all fan-shaped, then the steel wire enters the copper strip, and the forming part applies inward extrusion force to the bending sections so as to clad the copper strip on the surface of the steel wire and form a joint. Because the radius of all bending sections is smaller than that of the steel wire, after the inward extrusion force is applied to all bending sections by the forming part, the concave surfaces of the bending sections can be fully contacted with the surface of the steel wire, the uniformity of joint gaps is improved to a certain extent, the alignment problems such as misalignment and the like are avoided, and the welding quality is ensured.

Inventors

• XU BING
• LUO CHENGLONG
• Zou Die

Assignees

• 张家港市凯微特电子材料有限公司

Dates

Publication Date

20260512

Application Date

20260213

Claims (10)

1. 1. The cladding welding equipment for producing the copper clad steel wire comprises a frame, wherein a feeding part, a forming part and a welding part are sequentially arranged on the frame, the feeding part is used for synchronously conveying the copper strip and the steel wire to the forming part, the forming part is used for cladding the copper strip on the surface of the steel wire and forming a joint, and the welding part is used for welding the joint, and is characterized in that the section of the copper strip vertical to the length direction of the copper strip is called a first section, a bending part for bending the copper strip is further arranged between the feeding part and the forming part, the copper strips are respectively in a first state and a second state before and after passing through the bending part, when the copper strips are in the first state, the first section is integrally flat and takes a strip shape, when the copper strips are in the second state, the first section is bent into at least three continuous and fan-shaped bending sections, the radiuses of all the bending sections are smaller than the radiuses of the steel wires, the concave surfaces of all the bending sections face inwards and form openings at the top of the first section, and the width of the openings is larger than the diameter of the steel wires; after passing through the bending part, the steel wire enters the copper strip from the opening, and the forming part applies inward extrusion force to all the bending sections.
2. 2. The clad welding apparatus for producing a copper clad steel wire according to claim 1, wherein the number of bending sections is an odd number.
3. 3. The clad welding apparatus for producing a copper clad steel wire according to claim 1, wherein the number of bending sections is three.
4. 4. The cladding welding apparatus for producing copper clad steel wire according to claim 3, wherein the bending part comprises a first component and a second component which are sequentially arranged along the conveying direction of the copper strip, the first component is used for enabling the first section to form three continuous bending sections which are all fan-shaped, the concave surfaces of all the bending sections are upward, and the second component is used for bending the bending sections positioned at two sides upward and inward so that the concave surfaces of the bending sections positioned at two sides are inward.
5. 5. The clad welding apparatus for producing copper clad steel wire according to claim 4, wherein the first assembly is provided at least two, all of the first assemblies being capable of gradually decreasing the radius of all of the bent sections to be smaller than the radius of the steel wire, and the second assembly is provided at least two, all of the second assemblies being capable of gradually bending the bent sections located at both sides upward and inward, gradually switching the concave surfaces of the bent sections located at both sides from upward to inward, and gradually decreasing the width of the opening.
6. 6. The cladding welding apparatus for producing copper clad steel wire according to claim 4, wherein the first assembly comprises two first roller bodies arranged opposite to each other up and down, wherein the outer surfaces of the two first roller bodies are respectively formed with first protrusions and first grooves which are mutually matched along the circumferential direction of the first roller bodies, and the first protrusions and the first grooves are respectively arranged in three; The second assembly comprises a second roller body, wherein second grooves are formed in the outer surface of the second roller body along the circumferential direction of the second roller body, three second grooves are formed in the second grooves, and when the copper strips pass through the second grooves, bending sections on two sides are bent upwards and inwards.
7. 7. The clad welding apparatus for producing copper clad steel wires according to claim 6, wherein a plurality of first adjusting parts are provided on the frame, and the first adjusting parts are used for adjusting the distance between the first roller body or the second roller body and the copper strip.
8. 8. A cladding welding apparatus for producing copper clad steel wire according to claim 3, wherein the forming section comprises a third member and a fourth member which are sequentially arranged in a conveying direction of the copper strip, the third member being adapted to apply upward pressing force to the bending section located at the middle portion so that the bending section located at the middle portion is closely attached to the surface of the steel wire, and the fourth member being adapted to maintain the pressing force applied to the bending section located at the middle portion and to apply inward pressing force to the bending sections located at both sides.
9. 9. The clad welding apparatus for producing a copper clad steel wire according to claim 8, wherein the third assembly comprises a third roller body at the bottom of the steel wire, the outer surface of the third roller body being formed with a third protrusion along the circumferential direction thereof, the third roller body at the bottom of the steel wire exerting an upward pressing force on the bending section at the middle portion through the third protrusion thereof; The fourth component comprises three fourth roller bodies which are respectively positioned at the bottom and two sides of the steel wire, fourth bulges are formed on the outer surface of the fourth roller body along the circumferential direction of the fourth roller body, the fourth roller body positioned at the bottom of the steel wire keeps extrusion force applied to the bending sections positioned at the middle part through the fourth bulges, the fourth roller bodies positioned at the two sides of the steel wire are respectively provided with two fourth bulges, one fourth bulge applies inward extrusion force to the connecting part of two adjacent bending sections, and the other fourth bulge applies inward extrusion force to the bending sections positioned at the two sides.
10. 10. The clad welding apparatus for producing a copper clad steel wire according to claim 9, wherein a plurality of second adjusting parts are provided on the frame, the second adjusting parts being used for adjusting the distance between the third roller body or the fourth roller body and the steel wire.

Description

Cladding welding equipment for producing copper clad steel wires Technical Field The invention relates to the technical field of metal wire production, in particular to cladding welding equipment for producing copper clad steel wires. Background The copper clad steel wire is used as a key bimetal composite material, a steel core wire is used as a matrix, the surface of the copper clad steel wire is coated with a copper layer, the copper clad steel wire has high strength and toughness of steel, and excellent conductivity and corrosion resistance of copper, is widely applied to the fields of power distribution systems, communication cables, electronic component outgoing pins, lightning protection grounding and the like, is an ideal substitute of the traditional pure copper wire, and has the advantages of saving copper materials and reducing cost. According to different application occasions, the copper-clad steel wire can be divided into a soft state and a hard state, the soft state product is suitable for a scene with low tensile strength requirements and high elongation, and the hard state product is used for an environment with high tensile strength requirements. At present, the traditional technology for producing the copper clad steel wire at home and abroad mainly comprises an electroplating method, a dip coating method and a cladding welding method. The electroplating method deposits a copper layer on the surface of the steel core through an electrochemical process, although the cost is lower, three wastes are easy to generate, the binding force of the copper layer is insufficient, the steel wire is immersed into molten copper by a dip coating method to realize coating, the energy consumption is higher, and the uniformity of the copper layer is difficult to control. The cladding welding method adopts a copper strip to longitudinally clad the outside of the steel wire, seals the butt joint longitudinal joint through a welding process, and forms the butt joint longitudinal joint through a rolling or drawing process, so that the atomic diffusion metallurgical bonding of copper and steel is realized, the thickness uniformity and the firm bonding of the copper layer are ensured, and meanwhile, the problems of energy consumption and environmental pollution of high-temperature copper melting are avoided, thereby being an efficient and environment-friendly production process. In the cladding welding process, the copper strip is bent and coated on the surface of the steel wire to form a longitudinal joint, and then the joint is welded. During welding, the edge of the joint is easy to be subjected to the action of resilience force of materials, so that the joint gap is uneven, the alignment problems such as misalignment and the like are generated, and the welding quality is affected. The information disclosed in the background section of the invention is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art. Disclosure of Invention Based on this, it is necessary to provide a clad welding apparatus for producing a copper clad steel wire, aiming at the problems existing in the existing clad welding process. The above purpose is achieved by the following technical scheme: A cladding welding device for producing copper clad steel wires comprises a frame, wherein a feeding part, a forming part and a welding part are sequentially arranged on the frame, the feeding part is used for synchronously conveying copper strips and steel wires to the forming part, the forming part is used for cladding the copper strips on the surfaces of the steel wires and forming joints, the welding part is used for welding the joints, the section of the copper strips perpendicular to the length direction of the copper strips is called as a first section, a bending part used for bending the copper strips is further arranged between the feeding part and the forming part, the copper strips are respectively in a first state and a second state before and after passing through the bending part, the first section is wholly flat and takes a strip shape when in the first state, the first section is bent into at least three continuous and fan-shaped bending sections when in the second state, the radiuses of all the bending sections are smaller than those of the steel wires, the concave surfaces of all the bending sections face inwards and form openings at the tops of the first section, the width of the openings is larger than the diameters of the steel wires, the steel wires enter the copper strips from the openings after passing through the bending part, and the forming part applies inward extrusion force to all the bending sections. Further, the number of bending sections is an odd number. Further, the number of bending sections is three. Further, the bending part co