RU2095170C1 - Line for making bimetallic wire - Google Patents

Abstract

FIELD: plastic metal working, namely manufacture of bimetallic wire. SUBSTANCE: line includes uncoiling apparatus for strip material, apparatus for forming sheath and drawing bench. Said apparatus for forming sheath has arranged successively: disc shears for slitting, multirow stand for shaping H-shaped profile and drawing dies for bending up edges. Said drawing bench includes stands for forming round blank, compensating accumulator, drawing dies for sizing said round blank and multirow coiling apparatuses. Said drawing dies for sizing round blank are mounted with possibility of cross motion for providing wire coiling in rows. Mechanism for butt welding of strip material and additional compensating accumulator are arranged between said uncoiling apparatus and disc shears. Such line allows to produce bimetallic wire of bimetallic strip material such as steel copper coated strip at slitting the last by a large number of rectangular cross section wires with copper coat on their two faces for subsequently shaping round bimetallic wire. EFFECT: enhanced efficiency. 3 cl, 5 dwg

Description

 The invention relates to the processing of metals by pressure, namely the production of bimetallic wire.

 A known line for the production of bimetallic wire containing unwinding device, a device for forming a sheath and drawing mill. The line has a low productivity, and the resulting wire is not strong enough.

 An object of the invention is to ensure the production of a large number of bimetallic wires simultaneously from a bimetallic tape.

 A line for the production of bimetallic wire is proposed, comprising an unwinding device for tape material, a device for forming a sheath and a drawing mill, in which a device for forming a sheath consists of disk shears arranged in series for longitudinal cutting, a multi-row stand for forming an H-shaped profile and hair for bending the edges and the drawing mill has stands for the formation of a round profile, a compensating drive, dies for calibrating a round profile, as well as multi-row amatyvayuschie device. In this case, the dies for calibrating the round profile are movably in the transverse direction to ensure ordinary winding of the wire. Between the unwinding device and the disk shears there is a butt welding mechanism for the tape material and an additional compensating drive.

 This line makes it possible to produce bimetallic wire from bimetallic strip material, for example, steel tape with a copper coating, by cutting it longitudinally into a large number of rectangular wires with copper coating on two faces and forming round bimetallic wires from them, which determines its high performance . By equipping the line with a multi-row stand for forming an H-shaped profile and dies for bending the edges, a sheath of copper is formed on the steel wire. Compensating drive provides multi-line drawing with fluctuation (within the permissible) drawing speed of each individual wire. The presence of a butt welding mechanism allows the production of long wire with a relatively small length of the bimetallic billet (tape, strip), and welding is performed without stopping the line due to an additional compensating drive.

 In FIG. 1 shows a proposed line; in FIG. 2 5 change in the cross section of the workpiece in the process of wire production.

 An unwinder 1, a butt welding mechanism 2, a compensating drive 3, multi-row disc shears 4 for longitudinal cutting, multi-row devices 5 for forming an H-shaped profile, multi-row dies 6 for bending edges, multi-row pulling stands 7 for forming a circular profile, are multi-row compensating drive 8, multi-row dies 9 for calibrating a circular profile, mounted movably in the transverse direction from the drive (not shown) and multi-row winding devices rabans 10.

 The line is as follows.

 A roll 1 of a bimetallic tape, for example steel with a copper coating, 135 mm wide and 1.5 mm thick, is installed on the unwinder 1. The front edge of the tape is butt-welded to the trailing edge of the previous roll by means of mechanism 2. During welding, the tape in the welding zone is stationary, however, the operation of the other devices of the line does not stop: in compensating drive 3 there is a sufficient supply of tape to ensure the continuity of the process.

 Next, the tape is cut along multi-row disc scissors 4 into narrow strips of wire 12 of rectangular cross section, for example, 75 wires with a cross section of 1.8 x 1.5 mm, which have a copper coating on two faces (see Fig. 2). During the cutting process, the wires are bent with scissor knives 4 up and down through one, so the devices 5, 6 and 7 that follow during the process can be made in the form of two separate devices, one of which works with the upper wires and the other with the lower ones.

 On the device 5, each wire is subjected to shaped rolling, as a result of which grooves are formed on its two faces that are not coated (see FIG. 3). The resulting H-shaped wire passes through the die 6, while the profile shelves are bent towards each other (see Fig. 4), and then round wire is formed from it by rolling in stand 7, coated on all sides with copper (see Fig. 5). Due to the diffusion welding of the joints, the coating is continuous. On the dies 9, the wire is calibrated to a predetermined diameter, for example 1.5 mm. A relatively small degree of deformation of the wire avoids annealing, which contributes to the welding of the coating material during processing in stand 7 and die 9.

 In the process, the dies 9 are moved reciprocating in the transverse direction, as a result of which the ordinary winding of the wire is provided on the winding devices 10. Each wire is processed separately in the line. In this case, the movement speeds of individual wires can fluctuate relative to the average value. Compensating drive 8 ensures the efficiency of the line during rotation of the winding devices 10 from the common drive and the uniformity of the tension of the wires due to the same weight of the load suspended from each wire.

Claims (3)

 1. Line for the production of bimetallic wire, containing an unwinding device for tape material, a device for forming a sheath and a drawing mill, characterized in that the device for forming a sheath consists of disk shears arranged in series for longitudinal cutting, a multi-row stand for forming an H-shaped profile and fiber for bending the edges, while the drawing mill has stands for the formation of a round profile, a compensating drive, dies for calibration of a round profile and multi-row e coilers.  2. The line according to claim 1, characterized in that the dies for calibrating the round profile are movably in the transverse direction.  3. The line according to claim 1, characterized in that between the unwinding device and the disk shears is a butt welding mechanism of the tape material and an additional compensating drive.

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