CN218252151U

CN218252151U - Roller for improving residual stress of special-shaped copper strip

Info

Publication number: CN218252151U
Application number: CN202221023613.3U
Authority: CN
Inventors: 韩振斌; 赵昭; 刘冬; 于国军; 刘建斌; 李铁钢; 王伟志; 王宏
Original assignee: Jinchuan Group Co Ltd; Jinchuan Nickel Metropolis Industrial Co
Current assignee: Jinchuan Group Co Ltd; Jinchuan Nickel Metropolis Industrial Co
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2023-01-10
Anticipated expiration: 2032-04-29

Abstract

The utility model discloses a roll for improving heterotypic copper strips residual stress, the device includes: the roller body is provided with an annular groove in the middle; and the convex rings are arranged at the edges of the two ends of the annular groove. The utility model discloses can solve the equipment that improves heterotypic copper strips residual stress at present, the technological effect is poor, and production efficiency is low, can't adapt to the problem of the production demand of fast rhythm.

Description

Roller for improving residual stress of special-shaped copper strip

Technical Field

The utility model relates to a lead frame copper alloy material processing equipment technical field, in particular to a roll for improving heterotypic copper strips residual stress.

Background

With the rapid development of electronic information technology, integrated circuits are becoming more and more compact, thinner and multifunctional as the core of modern electronic industry. At present, lead frame products produced by the traditional stamping process are difficult to meet the high-end market demands, and are gradually replaced by etching processes. The process has strict requirements on the copper alloy material, and the material has the characteristics of high dimensional accuracy, good mechanical property, small internal stress and the like, and particularly requires that the smaller the internal residual stress is, the better the internal residual stress is. Therefore, in the material rolling production process, how to effectively reduce the residual stress of the strip is very important.

At present, when a special-shaped copper strip for a lead frame is produced, a copper strip after finish rolling is subjected to secondary correction by adopting equipment such as stretch bending and straightening in order to reduce internal residual stress. Although the method can improve the problems of internal stress of materials and the like, the technical effect is not ideal, the production efficiency is reduced, and the method cannot meet the production requirement of fast pace.

SUMMERY OF THE UTILITY MODEL

To present improvement abnormal shape copper strips residual stress's equipment, the technological effect is poor, and production efficiency is low, the unable problem that adapts to the fast-paced production demand, the utility model provides a roll for improving abnormal shape copper strips residual stress.

In order to achieve the above object, the technical solution of the present invention is specifically as follows:

a roll for improving the residual stress of a profiled copper strip, comprising:

the middle position of the roller body is provided with an annular groove for rolling the deformed copper strip;

and the convex rings are arranged at the edges of the two ends of the annular groove.

The width of the convex ring is not less than 5mm.

The thickness of the convex ring is 0.03-0.05mm.

The beneficial effects of the utility model are that: the utility model discloses compare earlier with current rolling method production heterotypic copper strips technique, the bulge loop of certain width is add to roll pass both sides position, when carrying out heterotypic copper strips production, through the amount of processing of increase semi-manufactured goods thin and thick material handing-over position department, then annealing softening treatment, eliminate this position stress concentration, its aim at reduces the material and causes the internal stress that the material extends inconsistent arouses because of the roll convexity, adopt the finishing roll to carry out the finished product rolling at last, can effectively improve the too big problem of the inside residual stress of strip.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in combination with the following embodiments. It should be understood that the description is intended for purposes of illustration only and is not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1, a roll for improving the residual stress of a profiled copper strip comprises: the roller comprises a roller body 1, wherein an annular groove 2 is formed in the middle of the roller body and used for rolling a special-shaped copper strip, the side wall of the annular groove 2 is inclined, and the inclination angle is 135 degrees; the convex rings 3 are arranged at the edges of the two ends of the annular groove 2, the width of each convex ring 3 is not less than 5mm, and the thickness of each convex ring 3 is 0.03-0.05mm.

The utility model discloses when using, directly utilize the utility model discloses roll heterotypic copper strips, during rolling, because the thickness of bulge loop 3 is greater than when 0.05, the impression can not be eliminated to the finished product, there is obvious recess above the material, and when being less than 0.03, material stress improves unobviously, consequently, two end value of 0.03-0.05mm or any numerical value between can all reach technological effect for the thickness selection of bulge loop 3, and, in order to adapt to stamping material's lower sword position, the width of bulge loop 3 is not less than 5mm, can effectively reduce the inside residual stress that heterotypic copper strips thin thick material department stress concentration caused through bulge loop 3.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundary of the appended claims, or the equivalents of such scope and boundary.

Claims

1. A roll for improving the residual stress of a profiled copper strip, comprising:

the roller comprises a roller body (1), wherein an annular groove (2) is formed in the middle of the roller body and used for rolling a special-shaped copper strip;

and the convex rings (3) are arranged at the edges of the two ends of the annular groove (2).

2. The roll for improving the residual stress of the profiled copper strip as claimed in claim 1, wherein: the width of the convex ring (3) is not less than 5mm.

3. The roll for improving the residual stress of the profiled copper strip as claimed in claim 1, wherein: the thickness of the convex ring (3) is 0.03-0.05mm.