JPH04113105U - Dice box for wire drawing processing - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a dice box that can improve space efficiency. [Configuration] Opposing side walls 3 and 6 in the box body 2
Among them, the side wall 3 located on the downstream side in the drawing direction of the wire 7
A first die 41 is attached to the inner surface of the tube, one end of the cylinder 11 is attached to the upstream side of the first die in the drawing direction, and a second die 42 is attached to the other end of the cylinder. A wire can be inserted through both and pulled out, allowing two-step wire drawing processing to be performed within one die box. In addition, the force applied to the second die when the wire is pulled out can be received by the downstream side wall via the cylinder and the first die, thereby preventing the second die from moving and causing wire breakage. can.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to a die box for drawing wire. .

0002

[Conventional technology]

Conventional die box for wire drawing (hereinafter abbreviated as "dice box") As such, a configuration shown in FIG. 3 is known.

0003 This dice box 1 consists of a box-like box body 2 with an open top surface, and a box body 2 with an open top surface. and a die 4 fixed to the inner surface 3a of one side wall 3 of the box body 2. The inside of the box body 1 is filled with a lubricant 5 containing metal soap or the like as a component. It is designed to be used.

0004 The side wall 3, the die 4, and the side wall 6 erected at a position opposite to the side wall 3. A through hole is coaxially formed in the wire 7 for inserting the wire 7 to be processed. ing.

[0005] In the conventional die box, the wire 7 is inserted into the through hole formed in the side wall 6. It is drawn into the inside of the box body 2 through the through hole, and the die 4 and the through hole formed in the side wall 3 are inserted into the box body 2. The wire 7 is extended to the outside through the through hole, and the wire 7 thus extended to the outside is connected to the drum. etc. (not shown) to force the wire inside the die 4. The wire 7 can be drawn by inserting the wire 7 therethrough.

[0006] By the way, in the wire drawing process, when the total area reduction rate of the wire 7 is large, the above-mentioned A plurality of dice boxes 1 having a configuration are arranged along the drawing direction of the wire 7. However, the inner diameter of the dice 4 in each die box 1 is gradually reduced. This reduces the resistance during wire drawing and prevents the wire 7 from breaking and the die 4 from breaking. This prevents inconveniences such as shortened lifespan due to excessive wear. The total area reduction rate is as follows: It is shown by the formula.

R=(A ₀ −A ₁ )/A ₀ ×100(%) Here, R is the total area reduction rate, A ₀ is the cross-sectional area of the wire before wire drawing, and A ₁ is the wire after wire drawing. is the cross-sectional area of

[0008]

[Problem that the idea aims to solve]

By the way, in the normal die box 1, in order to perform smooth wire drawing work, , it is required to fill a large amount of lubricant, and the overall shape is quite large. It has become a thing.

[0009] Therefore, in the technique using multiple dice boxes 1 as described above, , a place is required to place each large dice box 1, and the space is This has the disadvantage that the efficiency of the process deteriorates.

0010 In order to avoid such inconvenience, for example, as indicated by reference numeral 4a in FIG. A die is attached to the inner surface of the side wall 6 on the upstream side in the drawing direction of the wire 7, and this die A technology that aims to improve space efficiency by performing wire drawing processing using 4a. can also be considered. However, with these techniques, the wire being pulled out The force applied to the die 4a from 7 causes the die 4a to separate from the side wall 6. It is difficult to realize this because of the error. Further, as indicated by reference numeral 4b in FIG. A technique of attaching the die to the outside surface is also considered, but in this case, the die 4b and Sufficient lubricant could not be supplied between the wire 7 and the wire 7, causing seizure. I'm going to go to the middle of the day.

[0011] This invention was created in view of the above circumstances, and aims to improve space efficiency. The purpose is to provide a dice box that can.

0012

[Means to solve the problem]

In the dice box according to the present invention, among the opposing side walls of the box body, The inner surface of the side wall located on the downstream side in the direction in which the wire is drawn is a stage where the wire is drawn. Attach the first die and fill the inside with lubricant on the upstream side of the first die in the drawing direction. Attach one end of the cylindrical body so that its axis line matches the direction in which the wire is pulled out. , a second die for wire drawing is placed at the other end of the cylindrical body, and its axis is aligned with the first die. The configuration was such that the axes were aligned with each other.

[0013]

[Effect]

According to the die box according to the present invention, the die box is located on the downstream side in the wire drawing direction. Attach the first die to the inner surface of the side wall, and attach one end of the cylinder to the upstream side of the first die. In addition, since the second die was attached to the other end of the cylinder, the second die and the second die were attached to the other end of the cylinder. A wire can be inserted through both sides of one die and pulled out, making it possible to insert a wire into both sides of one die and pull it out. Wire drawing can be performed in two stages within the process. Also, for pulling out wires. Therefore, the force applied to the second die is applied to the downstream side through the cylinder and the first die. Since it can be supported by the wall, there is no possibility of the second die moving and causing wire breakage. can be prevented.

[0014]

【Example】

An embodiment of the dice box of the present invention will be described based on FIGS. 1 and 2. Na In the explanation of this embodiment, the configuration common to the conventional dice box described above will be explained. The same reference numerals are used to omit the detailed explanation.

[0015] In the dice box 10 of this embodiment, the inner surface of the side wall 3 of the box body 2 is , the first die 41 is fixed, and the inner surface of this first die 41 (the wire 7 is drawn out) One end surface of a cylindrical body 11 is fixed on the upstream side (direction upstream side). this The axis of the cylindrical body 11 is arranged at a position that coincides with the direction in which the wire 7 is pulled out.

[0016] A second die 42 is fixed to the other end surface of the cylindrical body 11. This second die The die 42 and the first die 41 are formed in a through hole for wire drawing (not shown). The axes of the wires 7 and 7 are aligned so that the wire 7 can be pulled out smoothly. It is configured so that it can be The bottom surface of the second die 42 is connected to the box body 2. is fixed to the bottom of the Further, a wire drawing process formed on the second die 42 The inner diameter of the through hole is slightly larger than the inner diameter of the through hole in the first die 41. has been completed.

[0017] An opening 12 is formed in the upper part of the cylindrical body 11, and the opening 12 penetrates in the inner and outer directions. A funnel-shaped receiving member 13 is fixed to this opening 12 . Also , the inside of the cylindrical body 11 is filled with lubricant 5 similarly to the box body 2. Ru.

[0018] Next, a method of using the dice box 10 of this embodiment will be explained.

[0019] First, as in the conventional case, one end of the wire 7 is inserted through the through hole formed in the upstream side wall 6. Pull it into the box body 2. Next, one end of this wire 7 is inserted into a second die. 42, the cylindrical body 11, and the first die 41, and form the shape on the downstream side wall 3. Insert the formed through hole and extend it to the outside, and attach it to a winding device (not shown) such as a drum. Attach. Next, the inside of the box body 2 is filled with lubricant 5, and the receiving The inside of the cylindrical body 11 is filled with the lubricant 5 from the member 13. In this state, pull wire 7 By drawing, a two-step wire drawing process is performed using the first die 41 and the second die 42. It can be performed. That is, according to the dice box 10 of this embodiment, one Because the wire drawing process can be performed in two stages inside the die box, large The number of installed dice boxes 10 having a large volume can be reduced by half. It has the advantage of being Therefore, space efficiency can be improved.

[0020] Further, according to the dice box 10 of this embodiment, the first dice 41 and the second dice Since the cylindrical body 11 is disposed between the wire 7 and the wire 7, the wire 7 to the second die 42 through the cylinder 11 and the first die 41. It can be received by the side wall 3 to prevent the movement of the second die and ensure smooth wire drawing operation. It has the advantage of being able to do a lot of work.

[0021] Furthermore, according to the die box 10 of this embodiment, the receiving member is provided at the upper part of the cylinder body 11. 13, it is possible to fill the lubricant 5 up to the vicinity of the upper end of the receiving member 13. As a result, the level of the lubricant 5 can be maintained at a high level. others Therefore, the internal pressure of the lubricant 5 inside the cylinder 11 can be increased, and the first die 4 The advantage is that lubricant can be efficiently supplied to the sliding contact area between wire 1 and wire 7. There is also.

[0022]

[Effect of the idea]

The dice box of the present invention has a width between the opposing side walls of the box body. On the inner surface of the side wall located on the downstream side in the drawing direction of the wire, there is a first dauber for wire drawing. Attach the chair and fill it with lubricant on the upstream side of the first die in the drawing direction. Attach one end of the cylindrical body with its axis aligned with the direction in which the wire is pulled out, and then At the other end of the body, a second die for wire drawing is placed so that the axis of the second die is aligned with the axis of the first die. Since it is installed so that the lines match, it can be installed in one die box. Two-step wire drawing processing is possible, reducing the number of die boxes installed and reducing the number of die boxes. It is possible to improve pace efficiency.

[Brief explanation of drawings]

FIG. 1 is a longitudinal sectional view of a dice box according to the present invention.

FIG. 2 is a sectional view of a main part taken along line A-A in FIG. 1;

FIG. 3 is a vertical cross-sectional view of a conventional dice box.

[Explanation of symbols]

2 Box body 3.6 Opposing side walls of the box body 7 wire 10 Dice box for wire drawing processing 11 Cylinder 41 1st die 42 2nd die

Claims (1)

[Scope of utility model registration request] 1. A die box for wire drawing, in which a wire is inserted between opposing side walls of a box main body filled with a lubricant, and the wire is drawn while being pulled out, the die box comprising: a box main body filled with lubricant; A first die for drawing the wire is attached to the inner surface of the side wall located on the downstream side in the drawing direction of the wire, and
One end of a cylindrical body filled with lubricant is attached to the upstream side of the die in the drawing direction, with its axis aligned with the drawing direction of the wire, and the other end of the cylindrical body is attached to the drawing direction of the wire. A die box for wire drawing, characterized in that a second die for processing is attached with its axis aligned with the axis of the first die.