JPH09164419A - Wire warm-drawing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of annealing at the time of drawing a wire while suppressing increasing a system scale and to continuously execute heating and wire drawing in wire warm-drawing. SOLUTION: A heater 4 and heater 10 are respectively arranged in a bobbin heating box 3 in which a delivery-side bobbin 2 around which a hard-to-work wire 1 before wire drawing is wound is housed and a lubricant storing part 6 in which the lubricant 7 for applying to the hard-to-work wire 1 which is drawn out of the bobbin heating box 3 is stored and the hard-to-work wire 1 before wire drawing is heated. This heated hard-to-work wire 1 is drawn with a die 9 for drawing. Heating and wire drawing are continuously executed without carrying in a annealing stage, so the reduction of the number of annealing and the improvement of operation efficiency are enabled.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire drawing device, and more particularly to a wire drawing device for drawing a wire which is difficult to process.

[0002]

2. Description of the Related Art Conventionally, wire drawing of a hard-to-work wire is performed by repeating cold drawing and annealing. As a difficult-to-work wire, for example, there is a material having a large deformation resistance such as Cu-14% Sn, and the deterioration of the hard-to-work property is suppressed by annealing to suppress the deterioration of the workability of wire drawing.

In Japanese Patent Publication No. 54-30395, Japanese Utility Model Publication No. 49-8929, and Japanese Patent Laid-Open Publication No. 51-56759, wire rods are passed through a furnace, or the wire rods are energized.
Applying an induction current to the wire to heat it, and then
The processing method of drawing the wire rod warm is shown.

[0004]

However, according to the conventional warm wire drawing method, since cold wire drawing and annealing are repeatedly performed,
For example, in order to prevent disconnection of a difficult-to-machine wire such as Cu-14% Sn that has a large deformation resistance, the number of times of annealing must be increased, which deteriorates the work efficiency. Further, according to the processing method shown in the above-mentioned publication, a space is required for the heating means, so that the system becomes large.

In view of the above, the present invention is directed to a warm wire drawing apparatus capable of reducing the number of annealings during wire drawing while suppressing an increase in the size of a system and continuously performing heating and wire drawing during warm wire drawing. The purpose is to provide.

[0006]

In order to achieve the above-mentioned object, the present invention provides a delivery side bobbin around which a difficult-to-process wire rod before wire drawing is wound, a heating box for housing the delivery side bobbin, and First heating means arranged in a heating box for heating the difficult-to-work wire wound on the delivery side bobbin, and hard-to-work wire drawn out from the heating box, the first heating means being arranged next to the heating box. A lubricant accommodating portion for accommodating a lubricant to be applied to the wire, and a wire drawing die for machining the hard-to-machine wire rod to a predetermined outer diameter, which is provided at a drawing-out position of the hard-to-machine wire material in the lubricant accommodating portion. It has a configuration with.

According to this structure, the wire is heated while being wound on the bobbin before being drawn, and is further conveyed to the wire drawing die without being cooled in the lubricant containing portion and wire drawing is performed.
Therefore, heating and wire drawing can be continuously performed without carrying into the annealing step, and the number of annealings can be reduced and the work efficiency can be improved. The above-mentioned object is to provide a delivery-side bobbin for winding a difficult-to-work wire before drawing, a first heating box for housing the delivery-side bobbin, and a delivery-side bobbin arranged on the first heating box. A first heating means for heating the difficult-to-work wire wound on the first heating box, and a first heating means for applying to the hard-to-work wire drawn out from the first heating box. A lubricant storage part in which the lubricant is stored,
Second heating means disposed in the lubricant accommodating portion for heating the lubricant, and provided at a position where the hard-to-work wire rod is drawn out of the lubricant accommodating portion, and the hard-to-work wire rod has a predetermined outer diameter. A wire drawing die to be processed, a winding side bobbin that winds a difficult-to-process wire drawn by the wire drawing die, and a winding side bobbin that is housed in the lubricant storage portion via the wire drawing die. Also according to a configuration including a second heating box connected to the second heating box, and a third heating unit that is disposed in the second heating box and that heats the difficult-to-work wire rod wound around the winding-side bobbin. To be achieved.

With this construction, it is possible to deal with the case where the bobbin and the warm-drawn difficult-to-work wire are heated not only on the delivery side but also on the winding side, and cooling after drawing is not preferable. it can. Further, it becomes possible to cope with the anti-oxidation treatment and the warm wire drawing in the forward and reverse directions. In this case, the lubricant storage box including the wire drawing die can be configured to be rotatable. According to this structure, continuous warm wire drawing is possible.

Further, the sending side bobbin and the winding side bobbin can be configured to be reversible. According to this configuration, normal and reverse alternating warm wire drawing is possible. Furthermore,
An inert gas may be filled in each of the first and second heating boxes and the lubricant container. According to this configuration, it is possible to prevent the surface of the wire from being oxidized.

[0010]

1 is a front sectional view showing an embodiment of a warm wire drawing apparatus according to the present invention. Difficult-to-process wire 1
(For example, a wire material of Cu-14% Sn) is the sending side bobbin 2
Is wrapped around. The delivery side bobbin 2 is housed in a bobbin heating box 3, and a heater 4 (first heating means) is installed on the ceiling surface and the bottom surface of the bobbin heating box 3. The side wall of the bobbin heating box 3 is provided with a hole for pulling out the difficult-to-process wire 1 to the outside, and the packing 5 is fitted in this hole. The bobbin heating box 3 is attached with a lubricant storage box 6 (a lubricant storage section) in which a lubricant 7 is enclosed so that the difficult-to-work wire rod 1 drawn out from the packing 5 is at the center. The packing 5 has the lubricant 7 as the bobbin heating box 3
It has a function to prevent it from flowing into the side.

A hole 8 for drawing out the difficult-to-work wire rod 1 is provided in the side wall of the lubricant container 6, and a wire drawing die 9 is fitted in the hole 8. Further, a heater 10 (second heating means) is attached to the entire area of the outer peripheral surface of the lubricant storage box 6 so as to surround and bend the wire drawing die 9.
a (second heating means) is provided. A cooling device 11 for cooling the difficult-to-work wire rod 1 pulled out from the wire drawing die 9 is installed near the wire drawing die 9.

In the above structure, the delivery side bobbin 2 around which the difficult-to-work wire material 1 is wound is installed in the bobbin heating box 3, and the hard-to-work wire material 1 is pulled out through the packing 5 and the wire drawing die 9. Then, the heater 4 is energized to heat the inside of the bobbin heating box 3, and the delivery side bobbin 2 and the difficult-to-work wire rod 1 are heated.
Heat. Further, the heater 10 is energized to heat the lubricant 7 in the lubricant storage box 6. Difficult-to-process wire 1
Is drawn at a constant speed, a lubricant 7 for facilitating wire drawing is applied to the surface of the lubricant storage box 6, and wire drawing is performed while the difficult-to-process wire material 1 passes through the wire drawing die 9. Be seen. The difficult-to-work wire rod 1 after drawing is cooled by the cooling device 11.

As described above, according to the configuration of FIG. 1, when performing the hot wire drawing of the difficult-to-work wire rod 1, heating and wire drawing can be performed without passing through separate steps, and workability and safety are ensured. Can be improved. FIG. 2 is a sectional view showing another embodiment of the warm wire drawing device according to the present invention. The warm wire drawing apparatus shown in FIG. 2 is different from the structure of FIG.
The take-up means is connected. In this warm wire drawing apparatus, the lubricant storage box 6 (lubricant storage portion) is rotatable, and therefore the lubricant storage box 6 is the bobbin heating box 3 (first heating box). ) Is not fixed, but is rotatably coupled.

The winding means is a winding side bobbin 12 for winding the difficult-to-work wire rod 1 from the wire drawing die 9, a bobbin heating box 13 (second heating box) for accommodating the winding side bobbin 12,
Each of the heaters 14 (third heating means) attached to the ceiling surface and the bottom surface of the bobbin heating box 13 is provided. The lubricant storage box 6 (lubricant storage portion) is also rotatably connected to the bobbin heating box 13.

In the configuration of FIG. 2, the delivery side bobbin 2 around which the difficult-to-work wire 1 is wound is installed in the bobbin heating box 3 (first heating box), and the hard-to-work wire 1 is packed and extended. It is guided to the bobbin heating box 13 through the wire die 9 and the tip is attached to the winding side bobbin 12. After this, the heater 4 (first
Of the heating means), 9a, 10 (second heating means) and the heater 14 are energized. The inside of the bin heating box 3 is heated by the heater 4, that is, the delivery side bobbin 2 and the difficult-to-work wire rod 1
Is heated. The heater 10 heats the lubricant 7 in the lubricant storage box 6, and the heater 14 heats the bobbin heating box 13 (that is, the winding-side bobbin 12 and the difficult-to-work wire rod 1 after wire drawing). It In this state, if the winding-side bobbin 12 is wound so as to pull out the difficult-to-work wire rod 1 on the wire-drawing die 9 exit side, the hard-to-work wire rod 1 is coated with the lubricant 7 by the lubricant storage box 6, and further. The difficult-to-work wire rod 1 is drawn in the process of passing through the wire drawing die 9.

As described above, according to the configuration of FIG. 2, when performing the warm wire drawing of the difficult-to-work wire rod 1, heating and wire drawing can be performed without passing through separate steps, and workability and safety are ensured. Can be improved. In addition, in the configuration of FIG.
When the lubricant storage box 6 and the wire drawing die 9 are inverted by 180 °, the warm wire drawing can be continuously performed.

Further, the bobbin heating box 3 and the lubricant storage box 6
If the inner space of each bobbin heating box 13 is filled with an inert gas such as nitrogen gas, it is possible to prevent the surface of the difficult-to-work wire rod 1 from being oxidized, which facilitates the post-treatment and maintains the state. You can also plan. Further, if the delivery side bobbin 2 and the winding side bobbin 12 can be reversed, warm wire drawing in the opposite direction is possible without exchanging the delivery side bobbin 2 and the winding side bobbin 12. In this case, the wire drawing dies 9 are replaced with those having different diameters, and then the orientations are reversed and installed.

[0018]

As is clear from the above, according to the present invention, the difficult-to-work wire rod is provided with the difficult-to-work wire material before wire drawing and the heating box for housing the delivery side bobbin around which the wire is wound. Since it is heated in the state wound on the bobbin in front, heating and wire drawing can be performed continuously without carrying it into the annealing process, reducing the number of times of annealing and improving work efficiency while suppressing the increase in size of the system. Improvement is possible.

Further, according to the present invention, there is provided a first heating box for accommodating the difficult-to-work wire rod before wire drawing and the bobbin on the delivery side for winding the wire rod, which is connected to the first heating box, A lubricant storage part that stores a lubricant to apply to the drawn hard-to-work wire, a winding-side bobbin that winds the hard-to-work wire drawn by a wire drawing die, and a winding-side bobbin Then, by providing a heating means in each of the second heating boxes connected to the lubricant storage box via the wire drawing die, it is possible to reduce the number of annealings and improve work efficiency. This makes it possible to configure equipment that supports anti-oxidation treatment and warm wire drawing in alternating forward and reverse directions.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing an embodiment of a warm wire drawing apparatus according to the present invention.

FIG. 2 is a sectional view showing another embodiment of the warm wire drawing device according to the present invention.

[Explanation of symbols]

 1 Difficult-to-process wire rod 2 Delivery side bobbin 3 Bobbin heating box 4, 10, 14 Heater 5 Packing 6 Lubricant storage box 7 Lubricant 9 Drawing wire die 11 Cooling device 12 Winding side bobbin 13 Bobbin heating box

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Masahiro Kiyoto 3550 Kidayo-cho, Tsuchiura-shi, Ibaraki Hitachi Cable Co., Ltd. Tsuchiura Plant (72) Inventor Genzo Iwashiro 3550, Kidayo-cho, Tsuchiura-shi, Ibaraki Hitachi Cable Shares Company System Materials Research Center

Claims (5)

[Claims] 1. A delivery-side bobbin around which a difficult-to-work wire is wound before wire drawing, a heating box for housing the delivery-side bobbin, a heating box disposed on the heating box, and wound around the delivery-side bobbin. A first heating means for heating the difficult-to-work wire, a lubricant storage part arranged at a next stage of the heating box, in which a lubricant for applying to the hard-to-process wire drawn out from the heating box is stored, A warm wire drawing apparatus, comprising: a wire drawing die, which is provided at a position where the hard-to-work wire material is drawn out of the lubricant container, and which processes the hard-to-work wire material into a predetermined outer diameter. 2. A delivery-side bobbin around which a difficult-to-machine wire is wound before wire drawing, a first heating box for housing the delivery-side bobbin, and a delivery-side bobbin arranged in the first heating box. A first heating means for heating the difficult-to-work wire wound around the first heating box, and a first heating means for applying to the hard-to-work wire drawn out from the first heating box. A lubricant storage part for storing a lubricant, a second heating means disposed in the lubricant storage part for heating the lubricant, and provided at a position where the hard-to-work wire is drawn out of the lubricant storage part. And a wire drawing die for processing the difficult-to-work wire material into a predetermined outer diameter, a winding side bobbin for winding the hard-to-work wire material drawn by the wire drawing die, and the winding side bobbin being housed A second heating box connected to the lubricant containing portion via a wire drawing die; The disposed heat box, the winding Togawa warm drawing apparatus characterized by comprising a third heating means for heating the flame machining wire is wound around a bobbin. 3. The warm wire drawing apparatus according to claim 2, wherein the lubricant containing portion including the wire drawing die is rotatable. 4. The warm wire drawing apparatus according to claim 2, wherein the delivery side bobbin and the winding side bobbin have a reversible structure. 5. The warm wire drawing apparatus according to claim 2, wherein an inert gas is filled in each of the first and second heating boxes and the lubricant container.