JP2001150020A - Method and device for wire drawing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compact and productive device and method for wire drawing, preventing overheating of cassette type dies and wire and deterioration of the working environment, even in the case of high-speed and long-hour continuous driving of wire drawing procession, which is done by using a plurality of blocks made up with the cassette type dies. SOLUTION: Putting a pair of dies with holes on each of two bearing frames, using a plurality of blocks consisting of several casette type dies put together into one body by a frame, a wire drawing is done continuously. During the drawing process, the cassette type dies blocks are cooled by a liquid refrigerant. In the wire drawing device provided with a plurality of cassette type dies blocks, the device provided with one block of the cassette type roller dies between the guide roller and the motive cane is made one unit of a drawing process, and a plurality of the drawing processes is arranged. And by making common the motive cone for giving a tension to the wire in the plurality of the unit drawing unit drawing processes, a refrigerator for the cassette type roller dies block is provided.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for drawing a steel wire rod for continuous drawing using a plurality of blocks of a cassette type roller die, and more particularly to a cassette type roller die and a temperature of the wire. The present invention relates to a wire drawing method and a device for performing a drawing process at a high speed while suppressing a rise.

[0002]

2. Description of the Related Art A cassette-type roller die constructed by laying a pair of roller dies on two bearing frames and combining them with a pair of frame assembly frames, and
Arbitrary numbers of the unit cassette type roller dies are arranged in parallel, the frame assembly frame is fastened to one body with a common bolt, and an arbitrary number of the cassette type roller dies are installed in parallel as one block, and wires and the like are installed. Cassette type roller dies which can be used for drawing are disclosed in
No. -17686.

[0003] In order to efficiently draw out a wire or the like using such a cassette type roller die, it is necessary to avoid an increase in the temperature of the roller. A cassette type roller die for suppressing the temperature rise of the roller is proposed in Japanese Utility Model Laid-Open No. 58-38314.

The configuration of these cassette type roller dies and the method of cooling them will be described with reference to the drawings.

FIG. 3 is a front view of the cassette type roller die, and is a partially sectional view. The rollers 18, 18a are provided with roller bearings 19 and bearing frames 20, 2,
0a. Bearing frames 20, 20a
Are frame frames 22, 2 via adjustment bolts 21, 21a.
2 a, a bearing cover 24 having a spring 23 is attached to the roller bearing 19. 25,
Reference numeral 25a denotes an assembly bolt hole for assembling a plurality of cassette type roller dies into a block by overlapping the roller directions alternately. Pressurized air blowing pipes 27, 27a are vertically fixed through the grooves 26 of the bearing frame, and the outlets thereof face the outer peripheral side surfaces of the rollers 18, 18a.

The cassette-type roller dies thus constructed are assembled into a block by stacking a plurality of rollers so that the directions of the rollers are alternately arranged, and the blocks 28a, 28b, 28c, 28d of the cassette-type roller dies are assembled as shown in FIG. A plurality of cassettes are arranged in series, and while the rollers of each cassette type roller die are blown with pressurized air from a blower of pressurized air, the wire 1 sent from the wire supply table 30 is pulled out by capstans 29a, 29b, 29c, and 29d. And is continuously wound up by the winding device 31. Therefore,
Since the rollers 18 and 18a are cooled by the blowing of the pressurized air, a rise in the temperature of the wire is suppressed.

However, in the above method, the peripheral speed of the roller surface, which is the wire processing speed, is relatively slow (200 m / mi).
n) is effective only when the processing speed is 300 to
In the case of continuous drawing at a high speed of 1000 m / min and using a plurality of blocks of the cassette type roller dies, each cassette type roller die and wire are overheated (100 ° C. or more) because of low cooling efficiency. The roller of the cassette type roller die wears faster, and the frame, bearings and the like of the cassette type roller die are damaged, and the quality and processing accuracy of the wire are reduced.

Further, since the pressurized air is used, noise and dust in the production plant are soared, and the working environment is deteriorated.

Further, the wire extracting device used in the serial arrangement method shown in FIG. 4 has a problem that a large space is required. Conventionally, such a problem has not been recognized at all.

[0010]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and is intended to solve the above-mentioned problem when a plurality of blocks of a cassette type roller die are used to draw a wire at a high speed for a long continuous operation. Also, it is an object of the present invention to provide a method and an apparatus for removing a cassette-type roller die and a wire which prevent overheating of the wire, save the work environment, and save the space and have good productivity of the wire.

[0011]

Means for Solving the Problems The present inventors have found that the above object can be achieved by using a liquid refrigerant instead of pressurized air, and have completed the present invention.

The gist of the present invention is as follows.

(1) A pair of hole-type roller dies are respectively mounted on two bearing frames, and continuous drawing is performed using a plurality of blocks each including a plurality of cassette-type roller dies integrated with the frame. In the wire drawing method to be performed, the block of the cassette type roller die is drawn while being cooled by a liquid refrigerant.

(2) The wire drawing method according to the above (1), wherein the drawing is performed using a power cone.

(3) In a wire drawing device having a plurality of cassette type roller die blocks, a device in which one block of a cassette type roller die is provided between a guide roller and a power cone is defined as one unit of a drawing step. A wire drawing device, wherein a plurality of drawing processes are provided, and a cooling device for a block of the cassette type roller die is provided as a common power cone for applying tension to the wires in the plurality of unit drawing processes.

(4) The wire drawing device according to (3), wherein the cooling device is a container storing a liquid refrigerant.

(5) The wire drawing apparatus according to the above (4), wherein the container storing the liquid refrigerant is provided with a temperature adjusting device for the liquid refrigerant.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments of the present invention will be described below in detail.

FIG. 1 is a front view showing an example of an apparatus used in the present invention. FIG. 2 is a plan view of the power cone, the cassette-type roller dice and the guide roll of FIG.

As shown in FIGS. 1 and 2, the wire 1 fed from a wire feeder (not shown) is wound around the power cone 6a two to three turns and pulled, and is pulled up through the upper guide roll 7a. After being drawn into the block 2 of the first cassette-type roller die on the gantry 12 and drawn out, it is wound around the power cone 6b two to three turns and pulled, and is pulled on the lower gantry 13 via the lower guide roll 7b. Second
After being drawn into the block 3 of the cassette type roller die and being drawn out, it is wound around the power cone 6c two to three times and pulled, and the third cassette type roller on the upper base 12 via the upper guide roll 7c. After entering the die block 4 and being drawn, the power cone 6d has 2-3
Circumferentially wound and pulled, enters the block 5 of the fourth cassette type roller die on the lower pedestal 13 via the lower guide roll 7d, and is drawn out. And is wound up by a winder (not shown) via an upper guide roll 7e.

Each winding stage 6a, 6b, 6 of the power cone
c, 6d and 6e are rotated by a shaft 9 which is rotated by a driving device (not shown) to draw the wire 1 from the blocks 2, 3, 4, and 5 of each cassette type roller die. The speed of the wire 1 is set to the block 2 of the first cassette type roller die, the block 3 of the second cassette type roller die, the block 4 of the third cassette type roller die, and the fourth.
The outer diameter of each winding stage of the power cone 6 is adjusted so that the wire which has been drawn out with the block 5 of the cassette type roller die and is extended as the outer diameter of the wire becomes smaller is not loosened and the tension is constant. 6a <6b <6c <
The rotation speed is determined by sequentially increasing the rotation speed to 6d.

The upper guide rolls 7a, 7c, 7e are rotatably supported by the upper shaft 10, and the lower guide rolls 7b, 7d are rotatably supported by the lower shaft 11. Also,
The block 2 of the first cassette-type roller die and the block 4 of the third cassette-type roller die are mounted on the upper stage 12.
The block 3 of the second cassette-type roller die and the block 5 of the fourth cassette-type roller die are respectively fixed to a lower pedestal 13, and the pedestals 12 and 13 are fixed to the bottom and sides of the container 8.

When the wire 1 is continuously drawn out as described above, the friction between the roller of each cassette-type roller die and the wire 1 and the heat generated by the plastic working of the wire 1 cause both the roller and the wire 1 of the cassette-type roller die. Although heated, the rollers and the wire 1 of the cassette type roller die are cooled by the liquid refrigerant 14 because they are immersed in the liquid refrigerant 14 stored in the container 8. In addition, container 8
Is circulated by a pump P, is cleaned by a filter 16, is sent to a cooling device (heat exchanger) 17, is temperature-controlled (cooled), and is returned to the container 8 again. Therefore, the processing heat generated in the blocks 2, 3, 4, and 5 of each cassette-type roller die is cooled, and the rollers and the wire 1 of the cassette-type roller die are removed even at a high speed and continuously for a long time. No overheating. Further, since the cooling uses the liquid refrigerant 14, the working environment is good without generating noise and dust, and a common power cone fixedly supported on the shaft 9 is used, so that a large space is not required.

The liquid refrigerant is preferably a water-soluble lubricating oil such as an emulsion type or a water-soluble type of wire drawing lubricant having excellent rust prevention and lubricity.

Cooling is also possible by a shower of a liquid refrigerant.

[0026]

The present invention will be described below in detail with reference to examples.

First, the wire speed on the exit side of the final cassette type roller die is changed from a 2.1 mm diameter welding wire strand of JIS Z3312 YGW11 to a 1.2 mm diameter using the apparatus shown in FIGS. It was drawn.
That is, the wire strand fed from the wire supply stand (not shown) is wound around the power cone 6a two to three times,
After entering the block 2 of the first cassette type roller die via the upper guide roll 7a and being drawn out,
The power cone 6c is wound around the power cone 6b two or three times, enters the block 3 of the second cassette type roller die via the lower guide roll 7b, and is drawn out.
And enters the block 4 of the third cassette type roller die via the upper guide roll 7c.
After the drawing, the power cone 6d is wound around the power cone 6d two or three times, and enters the block 5 of the fourth cassette type roller die via the lower guide roll 7d. After winding three turns, it was wound on a winder (not shown) via the upper guide roll 7e.

Table 1 shows the wire diameter, the reduction in area, and the outer diameter of the power cone on the exit side of the block of each cassette type roller die. The outer diameter of the roll of the cassette type roller die is 4
5 mm, the number of turns of the wire around each of the power cones 6a, 6b, 6c, 6d, and 6e is 2, and each of the guide rolls 7a, 7
The outer diameters of b, 7c, 7d, and 7e were all 120 mm.

[0029]

[Table 1]

As for the liquid refrigerant, an emulsion type water
% Added water-soluble lubricating oil was used. At this time, the temperature before drawing of the water-soluble lubricating oil was 26 to 30 ° C.
After continuous processing for one hour for each test example, the rise in temperature due to the processing is determined by the temperature of the frame frame on the exit side of the block 5 of the fourth cassette type roller die and the upper guide roll 7e.
The wire temperature of the part was measured and examined. The temperature of the water-soluble lubricating oil was not adjusted. Table 2 shows the results.

[0031]

[Table 2]

Test No. In all of the cases 1 to 3, the frame temperature and the wire temperature both increase as the wire speed at the final cassette type roller die exit side increases, but even when the wire is drawn at the highest wire speed of 1000 m / min, the frame temperature increases. The frame temperature was 50 ° C. and the wire temperature was 52 ° C., and the temperature rise was small. In addition, the wire diameter after the drawing process did not change at all, and furthermore, there was no generation of noise or dust, which was a very satisfactory result.

[0033]

According to the present invention, overheating of the cassette type roller die and the wire can be prevented even when a plurality of blocks of the cassette type roller die are used to draw the wire in a continuous operation at a high speed for a long time. In addition, it is possible to provide a method and an apparatus for extracting a wire, which does not impair the working environment and saves space and has good productivity of the wire.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of an apparatus used in the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a front view of a cassette type roller die.

FIG. 4 is a view showing a drawing device using a conventional cassette type roller die.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Wire 2 Block of 1st cassette type roller die 3 Block of 2nd cassette type roller die 4 Block of 3rd cassette type roller die 5 Block of 4th cassette type roller die 6a, 6b, 6c, 6d 6e Power cone 7a, 7c, 7e Upper guide roll 7b, 7d Lower guide roll 8 Container 9 Power cone shaft 10 Upper guide roll shaft 11 Lower guide roll shaft 12 Lower mount 13 Upper mount 14 Liquid Refrigerant 15 Pump 16 Filter 17 Cooling device (Heat exchanger) 18, 18a Roller 19 Roller bearing 20, 20a Bearing frame 21, 21a Adjusting bolt 22, 22a Frame frame 23 Spring 24 Bearing cover 25, 25a Assembly bolt hole 26 Groove of bearing frame 27, 27a Compressed air blowing pipes 28a, 28b, 28c, 28d Blocks of cassette type roller dies 29a, 29b, 29c, 29d Capstan 30 Wire supply table 31 Winding device

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[Procedure amendment]

[Submission date] December 2, 1999 (1999.12.
2)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Name of invention

[Correction method] Change

[Correction contents]

Patent application title: Wire manufacturing method and apparatus

[Procedure amendment 2]

[Document name to be amended] Statement

[Correction target item name] Claims

[Correction method] Change

[Correction contents]

[Claims]

[Procedure amendment 3]

[Document name to be amended] Statement

[Correction target item name] 0001

[Correction method] Change

[Correction contents]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for manufacturing a steel wire rod in which a plurality of cassette type roller dies are continuously drawn by using a plurality of blocks.
More particularly, the present invention relates to a cassette type roller die and a method of manufacturing a wire for performing drawing at a high speed while suppressing a rise in temperature of the wire, and an apparatus therefor.

[Procedure amendment 4]

[Document name to be amended] Statement

[Correction target item name] 0010

[Correction method] Change

[Correction contents]

[0010]

SUMMARY OF THE INVENTION The present invention is intended to solve the above-mentioned problems, and is intended to solve the above-mentioned problem when a plurality of blocks of a cassette type roller die are used to draw a wire at a high speed for a long continuous operation. It is another object of the present invention to provide a method of manufacturing a wire and a device for preventing the cassette type roller die and the wire from being overheated, saving the work environment, and saving the space and having good productivity of the wire.

[Procedure amendment 5]

[Document name to be amended] Statement

[Correction target item name] 0014

[Correction method] Change

[Correction contents]

(2) The method for producing a wire according to the above (1), wherein the drawing is performed using a power cone.

[Procedure amendment 6]

[Document name to be amended] Statement

[Correction target item name] 0015

[Correction method] Change

[Correction contents]

(3) In a wire drawing device having a plurality of cassette type roller die blocks, a device in which one block of a cassette type roller die is provided between a guide roller and a power cone is defined as one unit of a drawing step. A wire manufacturing apparatus comprising: a plurality of drawing steps; and a cooling device for a block of the cassette type roller die, wherein a power cone for applying tension to the wires in the plurality of unit drawing steps is shared.

[Procedure amendment 7]

[Document name to be amended] Statement

[Correction target item name] 0016

[Correction method] Change

[Correction contents]

(4) The wire manufacturing apparatus according to the above (3), wherein the cooling device is a container storing a liquid refrigerant.

[Procedure amendment 8]

[Document name to be amended] Statement

[Correction target item name] 0017

[Correction method] Change

[Correction contents]

(5) The apparatus for manufacturing a wire according to the above (4), wherein the container storing the liquid refrigerant is provided with a temperature adjusting device for the liquid refrigerant.

[Procedure amendment 9]

[Document name to be amended] Statement

[Correction target item name] 0033

[Correction method] Change

[Correction contents]

[0033]

According to the present invention, overheating of the cassette type roller die and the wire can be prevented even when a plurality of blocks of the cassette type roller die are used to draw the wire in a continuous operation at a high speed for a long time. In addition, it is possible to provide a method and an apparatus for manufacturing a wire which is space-saving and has good wire productivity without impairing the working environment.

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Teruo Suzuki 3-4 Tsukiji, Chuo-ku, Tokyo Nippon Steel Welding Industry Co., Ltd. F-term (reference) 4E096 EA02 EA12 FA03 FA20 GA03 GA13 GA15 GA18 HA23 KA05

Claims (5)

[Claims] 1. A pair of perforated roller dies are respectively mounted on two bearing frames, and continuous drawing is performed using a plurality of blocks each composed of a plurality of cassette type roller dies integrated with the frame. A method for drawing a wire, comprising drawing a block of the cassette type roller die while cooling the block with a liquid refrigerant. 2. The method according to claim 1, wherein the drawing is performed using a power cone. 3. A wire drawing apparatus having a plurality of cassette type roller dies blocks, wherein a cassette type roller die is provided between a guide roller and a power cone.
An apparatus provided with two blocks is a unit drawing process, a plurality of drawing processes are provided, and a power cone for applying tension to the wires in the plurality of unit drawing processes is shared, and a cooling device for the cassette type roller die block is provided. A wire pulling device comprising: 4. The wire drawing device according to claim 3, wherein the cooling device is a container storing a liquid refrigerant. 5. The wire drawing device according to claim 4, wherein the container storing the liquid refrigerant includes a temperature adjusting device for the liquid refrigerant.