JPH08242B2 - Rolling mill - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION The present invention provides two rolling rolls .
The present invention relates to a rolling mill in which a unit including the same can be exchanged , and particularly to a rolling mill suitable for rolling a wire rod having a small wire diameter.

[0002]

2. Description of the Related Art Conventionally, as a means for producing thin metal wires and the like, a wire drawing machine utilizing a fixed die having holes of a desired shape and a plurality of rolling rolls are combined to form a desired shape. A rolling mill or the like for rolling fine metal wires is used.

[0003] of the conventional, wire drawing machine using the fixed die,
Pull disconnect physician through the metal material formed in the fixed die hole
Since a metal wire or the like having a desired shape is obtained by supplying a lubricant between the hole formed in the fixed die and the metal material, this hole is formed.
It is necessary to reduce friction between the metal material and the metal material and prevent wear of holes formed in the fixed die.

On the other hand, in the conventional rolling machine for rolling a fine metal wire or the like by combining a plurality of rolls, the pressure required for rolling and the pressure for removing the mechanical rattling of the plurality of rolls are different from each other. It was obtained by pressing the outer peripheral surface of the roll. Further, in Japanese Patent Laid-Open No. 49-36560, Hide
Insert the loric elastic between the upper and lower roll chocks to
And apply these roll chocks to the lure chocks.
There is a method to remove the mechanical rattling by spreading it relatively.
It is disclosed.

Recently, development of special alloy metals having strong toughness, magnetism, corrosion resistance, heat resistance, etc. has progressed, and development of a rolling machine or the like for processing these special alloy metals to obtain fine metal wires or the like is required. Became.

[0006]

[SUMMARY OF THE INVENTION] The above-mentioned conventional wire drawing machine using a stationary die, because the formed fixed die hole had pulled disconnect through the metal material to obtain a metal wire or the like having a desired shape, strong When processing the above-mentioned special alloy metal having excellent toughness, the tensile stress becomes excessive and the processing efficiency is low.
Further, in a wire drawing machine using a fixed die, the special alloy metal may be deteriorated by the excessive tensile stress applied to the metal wire rod, or the metal wire rod may be broken during processing.

Further, the above-described conventional rolling mill using a plurality of rolling rolls rolls the metal wire rod and removes the outer peripheral surfaces of the plurality of rolls in order to remove mechanical rattling of the plurality of rolls. than you crimping, excessive force pressure than required for rolling the metal wire is given to the role. Therefore, this roll is required to have a material and a shape capable of handling the above-mentioned excessive force, and there is a certain limit to downsizing the roll. Also,
Since pressure is constantly applied to the outer peripheral surface of the roll, there is a problem of wear and deformation of the roll.

FIG . 5 shows a supporting member of a conventional rolling mill.
Strain amount (In the conventional rolling mill, the upper and lower rolls are independent
The amount of strain referred to here is supported by each of the support members.
The relative amount of movement of each support member)
It is a graph showing the relationship between load and roll surface pressure. Traditional
In the rolling mill, the preload starts when the upper and lower rolls come into contact with each other.
It is necessary to remove mechanical rattling as it occurs.
Roll surface pressure is required to obtain preload pressure
It becomes higher than the above, and the life of the roll is shortened.

Further , it is disclosed in JP-A-49-36560.
In the method shown, keep the roll surface pressure to the minimum necessary.
However, the hydraulic elastic body and the upper and lower roll cho
The rolling mill as it has to be adjusted separately.
Adjustments when operating are troublesome. Also this Hydro
A device for supplying pressure to the lick elastic body is required.
Therefore, the device is complicated and large in size as a whole.
There is a problem.

The present invention, when rolling a metal wire, metal or altered, without the metal wire is broken during processing, it is possible to accurately rolling the desired metal wire, further for rolling b Lumpur without giving excessive force to, in a more compact
An object is to provide a rolling mill that is easy to handle .

[0011]

The rolling mill according to the present invention comprises:
In order to solve the above-mentioned problem, the front surface is open and the two sides
It has a wall, a top plate, and a bottom plate.
A notch is formed and each side wall is divided into upper and lower parts
Box-shaped support member and upper and lower sections of the side wall of the support member
And a rear part of the supporting member detachably held by the pressing rolls , each of which is axially supported by each other and whose outer peripheral surfaces face each other .
Housing and the housing of the top plate in cooperation with this housing.
Preload applying means for pressing the front part to narrow the gap between the notches is provided.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A rolling mill according to the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of a rolling section 28 which is a main part of a rolling mill according to the present invention. This rolling section 28 has a front surface
Box-shaped support that is open and has two side walls, a top plate and a bottom plate
The member 5 is provided. Horizontal cutouts on these two sidewalls
A groove 6 is formed so that each side wall is divided into upper and lower parts. This
The bearings 18 and 1 are respectively provided on the upper and lower sections of the side walls of the supporting member 5 of
8 rolls (upper roll 10 and lower roll 1
The shafts 16 and 17 of 3) are pivotally supported so that the outer peripheral surfaces face each other.
Be directed. Therefore, the box-shaped support member 5 has upper and lower rolls.
10 and 13 are accommodated to form a roll unit. It
In addition, the support member 5 is a lower surface of the housing 9 whose bottom plate is a vise.
The support member 5 at the rear by means of screws 27.
It is detachably held by the ring 9.

At the upper part of the housing 9, the support member 5 is provided.
If the preload applying means 1 capable of pressing the top plate of
Has been. The preload applying means 1 is a housing 9
Has a pressing screw 2 that is screwed onto the upper part of the
The roll support member 5 is configured to be pressed in the arrow a direction via the pressing member 3 by rotating in the clockwise direction . Further , the pressing screw 2 is fixed by a lock nut 4 so as not to rotate unexpectedly after the adjustment .

The front portion of the support member 5 was pressed in the direction of arrow a.
Sometimes the gap between the notches 6 becomes narrower and
Between the bearing 18 and the shaft 16 and the bearing 18 due to elastic stress
The rattling between the shaft and the shaft 17 is eliminated. Further Prilo
The gap between the notches 6 is narrowed by adjusting the cord applying means 1.
Then, the upper roll stored in the roll storage portion 8 of the support member 5 is
The roller 10 and the lower roll 13 are in contact with each other. Top roll 10 and bottom
The roll surface pressure with the roll 13 is
By adjusting the preloading means 1 after contacting each other
You can do it. In addition, the supporting member by the preload applying means 1
The deformation amount e of 5 is within the range of elastic deformation of the support member 5.

First, in the rolling section 28 of the rolling mill shown in FIG.
If the upper and lower rolls 10 and 13 are rotated in the direction of arrow b,
Has been. The material to be rolled (not shown) is in front of the support member 5.
Side to rear side, rolled and taken out through the through hole 7.
It When the material to be rolled is fed in this way, the upper and lower rolls 10,
The rotation of 13 narrows the gap of the notch 6 of the support member 5.
Since it is urged in the full direction, it is not affected by external vibration.
Without reducing the roll surface pressure between the lower rolls 10 and 13.
Can perform accurate rolling.

FIG. 2 is a front view of the rolling section 28 of the rolling mill 29 according to the present invention. In this embodiment , each support member 5 has
It s driving force rotatably to the supporting each vertical rolls 10 and 13 were are configured to be transmitted. That is, lower roll 1
The shaft 17 of No. 3 is aligned with one end of the drive shaft 24 of the spreader 29 supported by the bearing 21 of the housing 9 and is connected via the drive force transmission unit 20. This driving force transmission section 20
Is provided with, for example, a concave groove formed at one end of the drive shaft 24 and a convex portion formed at one end of the shaft 17 and capable of fitting with the concave groove of the drive shaft 24 .

On the other hand, the driving forces of the drive shaft 24 mesh with each other.
Bearing of the housing 9 via the gear 23 and the gear 22
21 and a shaft 25 supported by a bearing 26. The shaft 16 of the upper roll 10 is substantially aligned with one end of the shaft 25.
The driving force transmission unit 20 is connected to the driving force transmission unit 20 .

[0019] The outer peripheral surface of the top and bottom roll 10, 13 11, 14
Are formed with rolling grooves 12 and 15, respectively, and when the upper and lower rolls 10 and 13 are adjusted to predetermined positions, the rolling grooves 12 and 15 are configured to obtain a predetermined shape. . In this embodiment , the upper and lower rolls 10, 1
Equal comb and pitch circle of the outer diameter and the gear 22, 23 3, the support member 5 in the axial pitch of the gear 22, 23 of upper and lower rolls 10 and 13 to adjust the preload application means 1 is attached to the housing 9 The axis pitch matches. Incidentally, before adjustment by preloading applying means 1, the upper roll 1
0 is off the axis of the axis and the gear 22 of, this deviation
Is absorbed by the structure of the driving force transmission portion 19 and the fitting tolerance, so that when the support member 5 is attached to the housing 9,
There is no problem with.

In the rolling mill of this embodiment, the gap between the upper and lower rolls 10 and 13 before adjustment is 0.02 to 0.03.
It is 5 mm, and the fitting tolerance of the driving force transmission parts 19 and 20 is set to 0.05 mm.

FIG. 3 is a view schematically showing the relationship between the upper and lower rolls 10 and 13 and the material 30 to be rolled. Top and bottom roll 1
0 and 13 are respectively biased in the direction of arrow a and are rotationally driven in the direction of arrow b. Then, the material 30 to be rolled is fed in the direction of the arrow d and is rolled by the rolling grooves 12 and 15 formed on the outer peripheral surfaces 11 and 14 of the upper and lower rolls 10 and 13. The arrow c is a reaction force generated during rolling. However, if the material 30 to be rolled is the upper and lower rolls 10,
If it is not between 13, roll 1 in the direction of arrow c
Only a reaction force against a predetermined pressure bonding force of 0 or 13 is generated.

Usually, this type of rolling mill has a diameter of 0.3 to
When manufacturing a thin metal wire of 0.5 mm, it is not a raw material.
Depending on the diameter of the wire rod to be used, several rolling mills may be arranged in series to obtain progressively thinner metal wire rods. Therefore of rolling mill
The number of upper and lower roll sets differs according to the number of units used.
The following dimensions are set and used. Rolling mill according to the invention
At 29, the support member 5 including the upper and lower rolls 10 and 13 is attached and detached.
Since it is used as a flexible unit, the upper and lower rolls 1
The combination of 0 and 13 can be managed by one support member 5.
Even if the number of rolling mills used is large, different dimensions can be achieved.
Such as using the set upper and lower rolls in combination
No mistakes will occur.

[0023] Figure 4 for strain in the supporting support member 5 of the rolling mill according to the present invention, it is grayed <br/> rough representing the relationship between the preload and the roll surface pressure.

[0024] As shown in the graph of FIG. 4, <br/> rolling mill of the present invention, it is possible to increase than the roll surface pressure preload preload without the excessive surface pressure on the roll
Can be adjusted.

[0025]

I to the present invention lever, since there is no Rukoto give undue surface pressure on the roll, it is possible to increase the life of the roll. Also, one support member including two rolls
Since it is provided as a unit, the roll position accuracy is high,
Particularly, a metal wire rod having a thin wire diameter can be accurately rolled . further,
Since the support member is detachable from the housing, the support member
Easily supports rolling of metal wire rods of various wire diameters by exchanging
can do. Also , remove the support member for storage.
If the two rolls to be combined are
Therefore, you may lose the roll or make a mistake in the roll combination.
Absent.

[Brief description of drawings]

FIG. 1 is a side view of a rolling section which is a main part of a rolling mill according to the present invention.

FIG. 2 is a front view of the rolling section of the rolling mill according to the present invention.

FIG. 3 is a diagram schematically showing a relationship between upper and lower rolls and a material to be rolled.

Is a graph showing the relationship between <br/> preload and roles surface pressure against the strain of the support member of the rolling mill according to the invention; FIG.

5 is a graph showing the relationship between Puriro <br/> over de and roles surface pressure against the strain of the support member of a conventional rolling mill.

[Explanation of symbols]

1 Preloading means 5 Support member 6 Notch 9 Housing 10 Upper roll 13 Lower roll 29 Rolling machine

Claims (1)

[Claims] 1. A front surface is open and two side walls, a top plate and a bottom plate are provided.
And a horizontal notch is formed on the two side walls.
Box-shaped support member with each side wall divided into upper and lower
And is axially supported by the upper and lower sections of the side wall of the support member,
A rolling roll whose outer peripheral surfaces are opposed to each other, and a housing which detachably holds the rear portion of the supporting member.
And, in cooperation with this housing, press the front part of the top plate,
A rolling mill provided with a preload applying means for narrowing the interval between the notches .