JPH06246335A - Die box for drawing deformed wire - Google Patents

Abstract

PURPOSE:To adjust the irregularity of wire without pulling out a wire by providing a mechanism by which a die is inclined and its shaft is changeable in the horizontal and vertical directions and a mechanism by which the die is rotated. CONSTITUTION:A wire rod (b) is continuously drawn through an insert port 6, die (a) and delivery port 8. The movement of the die axis in the horizontal direction is executed by turning a movable body 2 around a supporting shaft 3. The movement of the die shaft in the vertical direction is executed by turning the movable body 2 in the vertical direction around a through pin 4. After the prescribed movement is executed by unfastening the nut 28 of a bolt 27 for preventing inclination and the nut 15 of a fixing bolt 5, the horizontal and vertical directions of the die shaft are adjusted by fastening the bolts. When the screw of a die holder 10 in loosened, the die (a) can be manually turned. The axis of the die (a) is not only changeable in the horizonal and vertical directions without pulling out the wire but also the die (a) is rotatable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a die box used for drawing a metal deformed wire such as a low alloy steel wire.

[0002]

2. Description of the Related Art In addition to the importance of the cross-sectional shape of a deformed wire, a straight line is also required to smoothly carry out the downstream process. One of the means for adjusting this line is a straightening roll. Is used. However, in the case of a deformed wire, it is deformed when pressure is applied by a straightening roll or the like, and a predetermined cross-sectional shape cannot be maintained. In particular, when the straightening roll is used immediately before and after drawing, the deformation of the cross-sectional shape becomes remarkable. Therefore, conventionally, in order to adjust the line habit on the irregular line, it has been performed to incline the die and change its axis in both horizontal and vertical directions.

[0003]

By the way, when the die hole has a different shape, the twisting of the wire rod, the wheel rotation, the coil pitch, etc. are changed by rotating the die hole, and the sectional shape is also changed depending on the rotation angle and the degree of inclination of the die. Subtly changes. For this reason, it is necessary to rotate the die to adjust the wire habit to the optimum state, but in order to rotate the die with the conventional die box, there is no choice but to cut the wire once and remove it from the die hole. It was Specifically, the complicated work of redrawing the wire every time the habit or cross-sectional shape is not correct and manually correcting the rotation angle of the die and inserting the wire again into the die hole to check the habit is repeated. Of. There is also a problem that the inner surface of the die hole is damaged by contact with the cut portion of the wire by repeating cutting, wire drawing and re-insertion of the wire.

[0004]

The present invention has been made in order to solve such a problem, and its feature is that in a die box for holding a die for deformed wire drawing, the die is inclined and its axis is changed. It is provided with a mechanism for changing the direction horizontally and vertically, and a mechanism for rotating the die about an axis connecting the wire rod insertion port and the delivery port of the die box.
Here, it may be a so-called double die box in which two dies are held in parallel in the same center.

[0005]

When the die hole is circular, rotating the die hole does not particularly affect the wire. But if it is variant,
As described above, it affects the line habit and the like, and depending on the rotation angle, the wire feeding in the next step may not be successful, and in the case of coiling, processing defects may frequently occur. The box of the present invention is provided with a rotating mechanism in addition to a mechanism for inclining the die in the horizontal and vertical directions, so that the rotation angle of the die can be adjusted without pulling the wire to adjust the line habit and the sectional shape. You can

[0006]

EXAMPLES Examples of the present invention will be described below. (Embodiment 1) FIG. 1 shows a die box of the present invention using one die, which is mainly composed of a fixed plate 1 and a movable body 2 on the fixed plate 1, and rotates the movable body 2 in horizontal and vertical directions. The die axis is tilted horizontally and vertically by moving it. First, the fixed plate 1, which supports the entire box,
A rotatable support shaft 3 is erected on the upper surface thereof, and a movable body is pivotally supported via a penetrating pin 4 in a direction orthogonal to the support shaft 3. The fixing bolt 5 is also provided vertically between the fixed plate 1 and the other end of the movable body 2.

The movable body 2 is in the form of a container having an open top, and is opposed to a front wall 7 having a wire rod insertion port 6 and
It has a die holding plate 9 having a wire rod outlet 8. The inside of the movable body is partitioned by a partition plate 11 into which the die holder 10 can be inserted, and the wire rod insertion port side forms a lubricant box 12. In addition, the die is mounted by sandwiching the irregularly shaped die a between the die retainer 10 and the holding plate 9 which are fitted into the partition plate 11, and fixed substantially concentrically with the shaft connecting the insertion port 6 and the delivery port 8. Do it. Since the upper part of the die has a large opening, it is suitable for rotating the die by hand. Further, a long hole 14 is provided in the bottom plate of the movable body, through which the fixing bolt 5 penetrates, and the movable body can be rotated within the range of the long hole.

In the above-mentioned box, the wire rod b is continuously drawn through the insertion port 6, the die hole, and the delivery port 8, but the die shaft moves in the horizontal direction around the support shaft 3. Then, the movable body 2 is rotated. On the other hand, the movement in the vertical direction is performed by rotating the entire movable body in the vertical direction about the penetrating pin 4. At this time, the nut 28 of the tilt prevention bolt 27 and the nut 15 of the fixing bolt 5 provided on both sides of the intermediate portion between the movable body 2 and the fixed plate 1 and the nut 15 of the fixed bolt 5 are loosened to perform a predetermined movement, and then the bolt is tightened to tighten the die shaft. The horizontal and vertical directions of can be adjusted. Further, the die presser 10 is screwed onto the partition plate 11, and by loosening it, the die can be rotated by hand from above the movable body.

As described above, according to the present box, since the die can be rotated in addition to the mechanism for changing the die axis in the horizontal and vertical directions, the rotating angle of the die can be easily changed without removing the wire. It is possible to adjust the habit.

(Embodiment 2) Next, a double die box using two dies will be described with reference to FIG. This example is different from Example 1 in the mechanism for vertically changing the die shaft, but is common in that the movable plate 2 is provided on the fixed plate 1 and the die shaft is horizontally moved by its rotation. , Focusing on the differences.

First, the fixed plate 1 and the movable body 2 are connected by the support shaft 3 penetrating them, and the penetration pin 4 as in the first embodiment is not provided. Next, the movable body 2 includes a container-shaped lubricant box 12 and a die storage portion 16 having a side surface opened.
Is formed via a partition plate 11. Here, the wire rod insertion port 6 is formed on the front wall 7 of the lubricant box 12, and the holder wall 18 is formed on the rear wall 17 and the partition plate 11 that form the die storage unit 16, and all the above ports are formed. It is located almost in the same shape.

The holder opening 18 is where a cylindrical case holder 20 holding a die case 19 is inserted. One end of the case holder 20 projects from the rear wall 17 to form the wire rod outlet 8, and the worm gear is formed on the outer periphery of the projecting portion.
21 is provided, and the case holder 20 is rotated by rotating a worm 22 that meshes with this. By this rotation, the die housed in the holder can be rotated around the axis connecting the wire rod insertion port and the delivery port.

Further, a case insertion opening 23 is formed in the center of the case holder 20 in a direction orthogonal to this, and a die case 19 shown in FIG. 3 is accommodated therein. Dice case
Numeral 19 is a substantially cylindrical shape, and can accommodate two dice a1 and a2 inside. The state in which the dies are housed is as shown in FIG. 7C. The die a1 on the left side of the drawing is for pushing in the lubricant, and the die a2 on the right side is for original wire drawing. Both dies are held concentrically between the collar 24 and the die retainer 25, and by operating the knob 26, they can be rotated about an axis orthogonal to the axis connecting the wire rod insertion port and the delivery port. That is, instead of rotating the movable body itself as in the first embodiment, the die case 19 is rotated to change the die axis in the vertical direction. Incidentally, the knob 26 can be fixed to the case holder 20 by bolts (not shown) on its front and back to fix the rotation.

In order to perform wire drawing in such a die box, in FIG. 2, the lubricant is stored in the lubricant box 12, the wire is inserted, the lubricant pressing die a1 and the wire drawing die a2 are successively inserted. Pull the wire b through. And
The movement of the die shaft in the horizontal direction is performed by rotating the movable body 2 around the support shaft 3. The movable body 1 has a long hole 14 as in the first embodiment.
Since it can be rotated within the range, it can be fixed by screwing the nut 15 onto the fixing bolt 5 penetrating the elongated hole 14. Further, the vertical change of the die axis is performed by rotating the die case 19, and the die is rotated by operating the worm 22 to rotate the case holder 20. In the case of this example, by adopting the double die structure, the lubricant can be sufficiently supplied to the wire drawing die, and the wire drawing work can be performed smoothly.

[0015]

[Test Example] Actually, wire drawing was performed using the above die box. Example 1 is a die box with a total load of 20t or less, and Example 2 is a die box with a total load of 50t or less. At this time, the die axial direction and the die rotation angle could be adjusted without removing the wire, and the wire habit and the cross-sectional shape of the drawn wire rod could be adjusted to be optimum. The life of the die attached to each box was about three times as long as in the conventional case where the work of cutting the wire, removing the wire, and adjusting the work was repeated.

[0016]

As described above, according to the die box of the present invention, not only the axis of the die can be changed in the horizontal and vertical directions, but also the die can be easily rotated. Therefore, it is not necessary to cut the wire to remove the wire when the die is rotated, and the work of adjusting the wire habit and the cross-sectional shape becomes extremely easy. Further, since the wire drawing and the re-insertion are not performed, the inner surface of the die hole is not damaged, and the damage frequency of the die can be reduced.

[Brief description of drawings]

1A and 1B show a die box of the present invention, in which FIG. 1A is a plan view, FIG. 1B is a vertical sectional view, and FIG.

FIG. 2 shows a double die box of the present invention,
(A) is a horizontal sectional view, (B) is a vertical sectional view, and (C) is a rear view.

3A and 3B show a die case to be attached to the die box of FIG. 2, where FIG. 3A is a plan view and FIG. 3B is a side view.
(C) is a longitudinal sectional view showing a state in which a die is mounted.

[Explanation of symbols]

 1 Fixed Plate 2 Movable Body 3 Spindle 4 Penetration Pin 5 Fixing Bolt 6 Wire Rod Insertion Port 7 Front Wall 8 Wire Rod Outlet 9 Die Holding Plate 10 Die Presser 11 Partition Plate 12 Lubricant Box 14 Long Hole 15 Nut 16 Die Storage 17 Rear wall 18 Holder port 19 Dice case 20 Case holder 21 Worm gear 22 Worm 23 Case insertion port 24 Collar 25 Die holder 26 Knob 27 Tilt prevention bolt 28 Nut a, a1, a2 Die b Wire rod

Claims (1)

[Claims] 1. A die box for holding a die for deformed wire drawing, centering on a mechanism for inclining the die and varying its axis horizontally and vertically, and an axis connecting a wire rod insertion port and a delivery port of the die box. A die box for deformed wire drawing, comprising: a mechanism for rotating the die.