KR20100014200A - Apparatus for manufacturing wire - Google Patents

Abstract

PURPOSE: An apparatus for continuously manufacturing thin metal wires is provided to solve the degradation of productivity, complex operation processes, and many workers. CONSTITUTION: An apparatus for continuously manufacturing thin metal wires comprises following steps. A first thermal process furnace(17) heats a provided thin metal wire. A first than metal wire device(1) draws the wire from the thin metal wire which is heat-treated. A second thermal process furnace(21) successively heats the thin metal wire. The thin metal wire device(18) secondly draws the wire from the thin metal wire. A tension control system controls the drawing speed and the tension of the thin metal wire.

Description

Thin Line Continuous Manufacturing Equipment {APPARATUS FOR MANUFACTURING WIRE}

The present invention relates to a continuous production apparatus for fine metal wires, and more particularly, to a continuous production apparatus for fine metal wires in which formation of an oxide film is suppressed.

In the present invention, a conventional method of manufacturing a metal thin wire by wire drawing, which is an example of a thin wire, heats a metal wire having a diameter of 5 mm → primary wire, pickling, washing, and heating → secondary wire. Low productivity, repeated heating and pickling, such as pickling, cleaning, calibration → cutting, etc., was performed in an intermittent process of about 7 steps, resulting in a complicated work process and a large number of workers. Here, for example, a copper alloy wire having a diameter of 2.7 mm is first wired into a copper alloy wire having a diameter of 2.3 mm through a primary drawing process, and a copper alloy wire having a diameter of 2.3 mm is drawn into a copper alloy wire having a diameter of 1.8 mm through a secondary drawing process. If the average drawing speed of each drawing step is 27 ~ 32m / min., And each drawing step is intermittent, additional preparation time for the next drawing process is required, there is a problem that the productivity is reduced.

Accordingly, an object of the present invention is to provide a thin wire continuous production apparatus that solves the problems as described above (lower productivity due to intermittent work, complicated work processes, and a large number of workers). Hereinafter, the copper alloy thin wire will be described as an example, but the same can also be applied to a thin wire continuous production apparatus for continuously reducing the cross-sectional area of another metal alloy thin wire.

The present invention, the primary heat treatment furnace for heating the fine wire supplied; A primary thin wire for drawing the primary heat treated thin wire passing through the primary heat treatment furnace in a continuous manner; A secondary heat treatment furnace for continuously heating the firstly drawn fine wire passing through the primary fine wire; A secondary thinner for continuously drawing the secondary heat-treated thin wire passed through the secondary heat treatment furnace in a second manner; And a tension control system for controlling the drawing speed and tension of the thin wire passing through the primary thin wire and the second fresh wire, wherein the amount of heat supplied to the fine wire in the primary heat treatment furnace is supplied to the fine wire in the secondary heat treatment furnace. It provides a thin wire continuous manufacturing apparatus, characterized in that greater than the amount of heat.

Here, the primary and secondary heat treatment furnace includes a winding means therein to control the heating time according to the number of windings so that the fine wire is uniformly heated to a predetermined fresh temperature, and the fine wire wound in the primary heat treatment furnace is 2 Since the outer diameter is larger than the fine wire wound on the primary heat treatment furnace, the length of the fine wire winding on the primary heat treatment furnace winding means is longer than the length of the fine wire winding on the winding means of the secondary heat treatment furnace.

More preferably, the inside of the primary heat treatment furnace, the winding means, and the winding means inside the secondary heat treatment furnace have the same outer diameter, and the number of fine wires that are wound on the winding means of the primary heat treatment furnace is the winding of the secondary heat treatment furnace. It is better to have more than the number of windings in the means. This is because the winding means of the primary and secondary heat treatment furnaces must have the same outer diameter to maintain the same drawing speed and increase mutual compatibility.

Alternatively, the primary and secondary thinners may include winding drums immediately after drawing, and the fresh thin wires may be wound on the winding drums after drawing and pass through a tension control system installed between the primary winding drum and the secondary heat treatment furnace. In this way, the speed balance control and the tension control of the thin wire flowing through the continuous production apparatus of the thin wire can be easily performed.

In addition, when the fine wire supplied to the primary heat treatment furnace includes a rust preventive applied to the surface, in the present invention, since the thin wire can be continuously drawn in a relatively short time, the fine wire without the surface oxide film without intermittent pickling and cleaning processes can be used. It becomes possible to obtain.

Accordingly, as an example, a device for wire drawing a copper alloy wire having a diameter of 2.7 mm to a wire having a diameter of 1.0 to 1.8 mm is used for wire drawing, heat treatment, surface cleaning, straightening and cutting including two or more steps of drawing process. The present invention provides a continuous production apparatus of copper alloy thin wire without oxide film that increases productivity by integrating the process and prevents generation of surface oxide on the thin wire surface in the heat treatment process to improve the quality of copper alloy thin wire.

According to the present invention, the tensioning control system of the primary and secondary wire speed required for integrating the whole wire drawing process and the automatic control technology of tension through the tension control system to draw the wire containing two or more steps Continuous production equipment for copper alloy thin wire without surface oxide film which improves the quality of copper alloy thin wire by improving productivity by preventing the occurrence of surface oxide on the thin wire surface in the heat treatment process by continuously performing all processes of heat treatment, surface cleaning, straightening and cutting. Can be provided.

The device according to the present invention is a device for drawing wires of 2.7 mm diameter copper alloy wires with thin wires of 1.0 to 1.8 mm, including wire drawing, heat treatment, surface cleaning, straightening and cutting, including two or more drawing processes. It is a continuous production apparatus of copper alloy thin wire without oxide film which improves the productivity of copper alloy thin wire by increasing the productivity by integrating the process and preventing the generation of surface oxide on the thin wire surface in the heat treatment step.

Referring to the present invention in more detail according to the accompanying drawings as follows.

1 is an overall layout showing a plan view and a front view of a continuous production apparatus of copper alloy thin wire according to the present invention, Figure 2 is a plan view and a front view of a device including a primary tension control system applied to Figure 1, Figure 3 4 is a plan view and a front view of the primary heat treatment furnace applied to FIG. 1, FIG. 4 is a plan view and a front view of the primary thin wire applying machine shown in FIG. 1, FIG. 5 is a plan view and a front view of the secondary heat treatment furnace applied to FIG. 1, and FIG. FIG. 7 is a plan view and a front view of the secondary thin wire applied to FIG. 1, FIG. 7 is a plan view and a front view of the linear straightener applied to FIG. 1, and FIG. 8 is a plan view and a front view of the cutting machine applied to FIG.

In the accompanying drawings, the flow of the copper alloy thin wire is indicated by a dashed-dotted line, and the individual devices applied to the entire layout shown in FIG. 1 are shown in a plan view and a front view on an enlarged scale in FIGS. 2 to 8. In FIG. 2 to FIG. 8, the thin lines are continuously connected, and the subsequent portions are denoted by reference numerals A to F. FIG.

The reference numeral 11 shown in FIG. 2 is an uncoiler bobbin, and the fine wires released through the uncoiler bobbin 11 pass through a roller and a primary tension control system 16 to pass through the primary heat treatment furnace 17 shown in FIG. Flows). In addition, in FIG. 2, the bobbin brake 13 and the tension regulator 24 are shown. The thin wire before entering the primary tension control system 16 is indicated by a straight line, and the thin copper alloy wire is indicated by a dashed-dotted line from the primary tension control system 16. The copper alloy thin wire is drawn through two or more wire drawings, and is required to undergo a heat treatment process of about 300 ° C. before the wire drawing operation, and thus, oxides are formed on the surface through the heat treatment and drawing processes. Such surface oxides should be restrained as much as possible, since they do not affect the quality of the finished product or directly affect the quality of the finished product. In the present invention, the copper alloy thin wire passes through the rust inhibitor bath 26 immediately before passing through the primary tension control system 16 in order to suppress the generation of such surface oxide as much as possible. The surface of the copper alloy thin wire is applied with a water soluble rust inhibitor while passing through the rust inhibitor bath 26. These rust inhibitors are substances used to prevent oxidation by adding when metals are exposed to corrosive environments, and those commonly used in aqueous solutions include chromic acid salts, phosphate salts, silicates, and the like. Can be used.

The copper alloy thin wire ("A") which has passed through the primary tension control system 16 shown in FIG. 2 is heat-processed through the primary heat processing furnace 17 shown in FIG. The primary heat treatment furnace 17 includes a first preheating chamber 6 and a heater 7 in the lower portion, and heats the copper alloy thin wire in the heat treatment furnace 17 to about 300 ° C. as described above. A top free drum 8 is shown in the top view of FIG. 3. In some cases, since the primary heat treatment furnace 17 is sealed from the outside and the internal atmosphere is controlled, oxides may be prevented from occurring on the copper alloy thin wire surface during the heat treatment process. However, since the copper alloy thin wire is continuously introduced into the primary heat treatment furnace 17, and the heat treated copper alloy fine wire also continuously exits the primary heat treatment furnace 17, the space in which the primary heat treatment furnace 17 is enclosed from the outside is sealed. It can be difficult to maintain. Even in this case, as shown in FIG. 2, since the antirust agent is applied to the surface of the copper alloy thin wire, the oxide film is not formed on the surface even though the temperature of the copper alloy thin wire increases while passing through the primary heat treatment furnace 17 shown in FIG. Assuming that the copper alloy thin wires released from the uncoiler bobbin 11 shown in FIG. It is necessary to increase the time to stay inside the heat treatment furnace 17. For this purpose, the copper alloy thin wire is wound around the primary pre-drum 8 inside the primary heat treatment furnace 17 so that the copper alloy fine wire stays sufficiently in the primary heat treatment furnace 17 for a predetermined time. Consideration can be made to flow to the ship (1). Accordingly, the copper alloy thin wire according to the present invention is heated to a sufficient temperature before passing through the primary die (drawing die) 10 of the primary fine wire 1 shown in FIG. 4 to ensure sufficient extensibility.

The copper alloy thin wire ("B") which has passed through the primary heat treatment furnace 17 shown in FIG. 3 passes through the primary fine wire 1 shown in FIG. The primary washing machine 1 is a lubricant tank 9, a primary die (drawing die) 10, a winding drum 5, a guide roll 19, and a tension on a path through which copper alloy fine wire passes. A lever hinge 25 and a secondary tension control system 20. The winding drum 5 is located above the spindle 4 and the worm reducer WV 100 3 is located below the spindle 4. One side of the primary washing machine 1 is provided in the fresh oil pump 14. The cone panel 12 is installed above the primary thinner 1. The copper alloy thin wire passing through the primary heat treatment furnace 17 shown in FIG. 3 passes through the primary die (drawing die) 10 in a sufficiently heated state, so that the drawing operation can be performed smoothly. For example, a copper alloy thin wire having a diameter of 2.7 mm passes through the primary die (drawing die) 10 to become a copper alloy thin wire having a diameter of 2.3 mm, and thus, the primary die ( The winding drum 5 is provided immediately after the drawing die 10. Thus, the copper alloy thin wire passing through the primary die (draw die) 10 is wound directly on the winding drum 5 and followed by a guide roll 19, a tension lever hinge 25, and a secondary tension control system ( 20 flows through the secondary heat treatment furnace 21 shown in FIG. Even when the primary wire is made, as shown in FIG. 2, since the anti-corrosive agent is applied to the surface of the copper alloy thin wire according to the present invention, the oxide film is not formed on the surface even though the copper alloy fine wire is drawn while passing through the primary fine wire 1. Do not.

The copper alloy thin wire ("C") passing through the primary fine wire 1 shown in FIG. 4 is heat-treated again while passing through the secondary heat treatment furnace 21 shown in FIG. The first preheating chamber 6 'and the heater 7' are similarly provided in the lower part of the secondary heat treatment furnace 21 as well. Also shown in the top view of FIG. 5 is a secondary free drum 8 ′. In some cases, since the secondary heat treatment furnace 21 is also sealed from the outside and the internal atmosphere is controlled, oxides may be prevented from occurring on the surface of the copper alloy thin wire during the heat treatment process. However, since the copper alloy thin wire is continuously introduced into the secondary heat treatment furnace 21, and the heat-treated copper alloy thin wire also continuously exits the secondary heat treatment furnace 21, the secondary heat treatment is performed as in the primary heat treatment furnace 17. It may be difficult to keep the furnace 21 in a closed space from the outside. Even in this case, as shown in FIG. 2, since the anti-corrosive agent is applied to the surface of the copper alloy thin wire, the primary heat treatment furnace 17 shown in FIG. 3, the primary thin wire 1 shown in FIG. 4, and FIG. Even if the copper alloy thin wire is heated or processed while passing through the secondary heat treatment furnace 21 shown, an oxide film is not formed on the surface. Assuming that the copper alloy thin wires released from the uncoiler bobbin 11 shown in FIG. The residence time inside the heat treatment furnace 17 is a relatively long time, but since the copper alloy fine wire introduced into the second heat treatment furnace 21 after passing through the primary thin wire 1 has a temperature of approximately 150 ° C., 2 The number of windings of the copper alloy thin wire wound around the secondary free drum 8 'inside the primary heat treatment furnace 21 is at least as large as the number of windings of the copper alloy thin wire wound around the primary free drum 8. This is because a relatively small amount of time will be required to heat a copper alloy thin wire having a temperature of about 150 ° C to a temperature of about 300 ° C. Accordingly, the copper alloy thin wire according to the present invention may be heated to a sufficient temperature before passing through the secondary dice (draw die) 15 of the secondary thin wire 18 shown in FIG. 5 to ensure sufficient extensibility.

The copper alloy thin wire ("D") which has passed through the secondary heat treatment furnace 21 shown in FIG. 5 passes through the secondary fine wire 18 shown in FIG. Secondary thinner 18 also has a configuration similar to primary thinner 1, with a lubricant tank 9 ', a secondary die (draw die) 15, and a wye on a path through which copper alloy thin wire passes. And a guiding drum 5 'and a guide roll 19'. Here too, the winding drum 5 'is located above the spindle 4' and the worm reducer WV 100, 3 'is located below the spindle 4'. As in the primary washing machine 1, a fresh oil pump 14 ′ is provided at one side of the secondary washing machine 18. The control panel 12 ′ is also provided on the secondary thinner 18. Unlike the primary washing machine 1, it can be seen that it does not have a separate tension system. The copper alloy thin wire passing through the secondary heat treatment furnace 21 shown in FIG. 5 passes through the secondary dice (drawing die) 15 in a sufficiently heated state, so that the drawing operation can be performed smoothly. For example, a primary alloy drawn fine 2.3 mm diameter copper alloy thin wire passes through a secondary die (draw die) 15 to become a copper alloy thin wire 1.8 mm in diameter. The winding drum 5 'is provided just behind the secondary dice (drawing die) 15. Therefore, the copper alloy thin wire passing through the secondary die (draw die) 15 is wound directly on the winding drum 5 'and flows through the guide roll 19' following it, and is straight straightener 22 shown in FIG. Flows into). Even when the secondary wire is made, as shown in FIG. 2, since the anti-corrosive agent is applied to the surface of the copper alloy thin wire according to the present invention, the oxide film is not formed on the surface even though the copper alloy fine wire is drawn while passing through the secondary thin wire 18. Does not.

The copper alloy thin wire ("E") which has passed through the secondary fine wire 18 shown in FIG. 6 passes through the linear straightener 22 shown in FIG.

Then, the copper alloy thin wire ("F") which has passed through the straightener 22 shown in FIG. 6 passes through the cutting machine 23 shown in FIG.

As described above, in the present invention, the primary winding means such as the primary free drum 8 inside the primary heat treatment furnace 17, and the secondary free drum 8 ′ inside the secondary heat treatment furnace 21 are described. By providing secondary winding means, a relatively long primary heat treatment furnace is determined by the temperature of the copper alloy thin wire introduced into the primary heat treatment furnace 17 and the temperature that the copper alloy thin wire passing through the primary heat treatment furnace 17 should have. (17) Relatively short secondary heat treatment furnace, determined by the temperature of the copper alloy fine wire, which ensures residence time and is introduced into the secondary heat treatment furnace 21, and the temperature that the copper alloy fine wire passed through the secondary heat treatment furnace 17 should have. (21) By adjusting the residence time so that the number of windings to the secondary winding means is smaller than the number of windings to the primary winding means, it is considered that a series of operations can be continuously performed even if the second or more fresh works are continuously performed. . As a result, the copper alloy thin wire should be kept relatively long in the first heat treatment furnace 17 under the premise that the heating capacity of the first and second heat treatment furnaces 17 and 21 is the same. While it is possible to raise the copper alloy thin wire to a desired temperature (for example, 300 ° C.), in the second heat treatment furnace 21, even if the copper alloy thin wire stays for a relatively short time, the copper alloy thin wire having a relatively high temperature (for example, 150 ° C.) Since it can be raised to a desired temperature (for example 300 ℃), if the capacity of the primary and secondary heat treatment furnace (17, 21) is different, or installed in the primary and secondary heat treatment furnace (17, 21) If the diameter of the winding means is different, the above conditions may be changed. That is, in the present invention, the amount of heat supplied to the copper alloy thin wire in the primary heat treatment furnace 17 and the amount of heat supplied to the copper alloy thin wire in the secondary heat treatment furnace 21 are different, and are preferably supplied to the primary heat treatment furnace 17. It is characterized in that the heat amount is greater than the heat amount supplied to the secondary heat treatment furnace 21.

In addition, in the present invention, it is possible to adjust the tension of the copper alloy thin wire flowing throughout the thin wire device according to the present invention by installing the winding drums (5, 5 ') in the primary and secondary thin wire (1, 17). It is done.

As a result, the winding speed of the winding means installed in the primary and secondary heat treatment furnaces 17 and 21 and the winding drums 5 and 5 'installed in the primary and secondary thinners 1 and 17 are the same. By varying the not only can control the speed of the copper alloy thin wire flowing through the thin wire device according to the present invention, but also the secondary tension control system 20 installed between the primary and secondary thin wires (1, 17) Through the tension can be controlled.

Of course, the speed or tension of the copper alloy thin wire can be displayed or controlled by the control panels 12 and 12 'installed in the primary and secondary fine wires 1 and 17.

In addition, in the present invention, unlike the conventional method, the drawing process of the copper alloy thin wire is made through a continuous process, so that the overall process time is significantly shortened. It has the advantage that it remains on the surface until it reaches the fresh drawing so that it does not need to go through the pickling or cleaning step in the intermediate step.

In the above, the case of performing the primary and secondary drawing is described as an example, but if necessary, it is also possible to additionally perform the heat treatment and the drawing process. It is possible to be processed into a copper alloy fine wire 1 mm in diameter through.

According to the present invention, the productivity and quality are improved compared to the existing process by solving the balance control technology of the speed of the primary and secondary wire speed and the automatic control technology of tension required to integrate the entire drawing process.

1 is an overall layout of a continuous production apparatus of copper alloy thin wire according to the present invention.

FIG. 2 is a plan view and a front view of the apparatus including the primary tension system applied in FIG. 1.

3 is a plan view and a front view of a primary heat treatment furnace applied to FIG. 1.

4 is a plan view and a front view of the primary thin wire applied to FIG.

5 is a plan view and a front view of a secondary heat treatment furnace applied to FIG. 1.

FIG. 6 is a plan view and a front view of the secondary thin wire applied to FIG. 1.

7 is a plan view and a front view of the linear straightener applied to FIG. 1.

8 is a plan view and a front view of a cutting machine applied to FIG.

Claims (5)

A primary heat treatment furnace for heating the supplied fine wire; A primary thin wire for drawing the primary heat treated thin wire passing through the primary heat treatment furnace in a continuous manner; A secondary heat treatment furnace for continuously heating the firstly drawn fine wire passing through the primary fine wire; A secondary thinner for continuously drawing the secondary heat-treated thin wire passed through the secondary heat treatment furnace in a second manner; And, And a tension control system for controlling the drawing speed and tension of the thin wire passing through the primary thin wire and the second fresh wire. The amount of heat supplied to the thin wire in the primary heat treatment furnace is a continuous production apparatus of thin wire, characterized in that greater than the amount of heat supplied to the fine wire in the secondary heat treatment furnace. The method of claim 1, The primary and secondary heat treatment furnace includes a winding means therein, and the length of the thin wire wound on the winding means of the primary heat treatment furnace is a thin line characterized in that it is longer than the length of the thin wire wound on the winding means of the secondary heat treatment furnace. Continuous manufacturing equipment. The method of claim 2, The winding means inside the primary heat treatment furnace and the winding means inside the secondary heat treatment furnace have the same outer diameter, and the number of fine wires wound on the winding means of the primary heat treatment furnace is the same as that of the winding means of the secondary heat treatment furnace. Thin wire continuous manufacturing apparatus, characterized in that greater than the number of winding. The method according to any one of claims 1 to 3, The primary and secondary thin wires include winding drums immediately after drawing, and the fresh thin wires are wound on the winding drums after drawing and pass through a tension control system installed between the primary winding drum and the secondary heat treatment furnace. Continuous manufacturing equipment. The method of claim 4, wherein The thin wire supplied to the primary heat treatment furnace includes a thin wire continuous manufacturing apparatus, characterized in that it comprises a rust inhibitor applied to the surface.

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