JPH04200906A - Rolling method and rolling mill - Google Patents

Abstract

PURPOSE:To correct the distortion of sectional shape of a material to be rolled and to easily and safely make the adjustment possible by moving a pair of rolling rolls integrally in the direction of roll axis with respect pass line of the material to be rolled during rolling. CONSTITUTION:When a pair of the rolling rolls 20, 21 are integrally moved in the direction of roll axis, a drive shaft 54 is revolved with a revolving means 57 and a pair of turning shafts 27 are revolved in a different direction. Then, respective pairs of arms 29, 30, 31, 32 with which each of roll chock parts 25, 26 are clamped are integrally turned with the turning shafts 27. Consequently, a pair of the rolling rolls 20, 21 is moved in the axial direction through of roll chock parts 25, 26. In this way, the position of caliber of the rolling rolls 20, 21 can be adjusted on the pass line 6 even during rolling.

Description

Detailed Description of the Invention (Industrial Application! I!f) The present invention introduces and rolls a material to be rolled by a pair of rolling rows having a caliber, and rolls it into long pieces such as cotton rolls and bars. The present invention relates to a filter rolling method and a rolling mill used in manufacturing shaku materials.

(Conventional techniques j, L'r) Next, rolling equipment (+ii
In step i, it is necessary to align the caliber positions of the pair of rolling rolls with the pass line of the material to be rolled.

Conventionally, in the case of a large movement such as selecting one of a plurality of rolling rolls, the rolling mill itself was moved before rolling (see JP-A-53-33963) In addition, in the case of delicate adjustment of the caliber position with respect to the pass line, the entrance guide that guides the rolled material on the entrance side of the rolling r: J-ru is adjusted without moving relative to the caliber position (especially when Publication No. 81.154/1983).

In split rolling, in which the cross section is made into a peanut shape before division, and in the final rolling, it is required that the pass line and the center of the caliber position are exactly aligned. This is to ensure equal division during split rolling, and to adjust the cross-sectional shape during secondary rolling. That is, if the caliber 2 of the rolling roll 1 deviates to the left or right from the pass line during split rolling,
As shown in FIG. 9, when a rolled material 3 having a rectangular cross section is rolled and shaped from a peanut shape to a constricted shape, the rolled material 3 becomes asymmetrical to either the left or the right. Therefore, after that, the pressurized abrasive material 3 is divided into multiple pieces along the longitudinal direction using a slitter.
It is not possible to roll them evenly, and problems such as oversized loops and breakage may occur before final rolling, and this may also cause variations in the number of wires of product 4 or variations in product shape. be.

(Problems to be Solved by the Invention) The conventional method of adjusting the position of the entrance guide has the following problems.

The inlet guide is placed very close to the rolling rolls, so adjusting the inlet guide by moving the inlet kite will allow the rolling l-1-
The centering of the ml-mill with respect to the caliber position is very difficult, and it is dangerous to move it during rolling because there is a possibility of contact with the rolling ml-mill. Furthermore, since the kite is tightly clamped, it is necessary to remove the clamp when making adjustments. Therefore, the adjustment of the person 1-11 must be carried out while the material to be rolled is being cut. In addition, whether or not it is equally divided can be determined by the difference in the loop amount, but since the rolled material will be rounded 9 times after passing, the suitability of the tool rounding h ( cannot be determined by real tie J). If you make a mistake in the amount of adjustment, there is a high possibility that you will misroll.

The present invention 1ll1 solves such conventional problems by rolling +A of Hori.
It can be easily and safely adjusted even during rolling. L sea urchin zuromonotea 2).

(Means for Solving the Problem) The rolling method according to the present invention is a rolling method for manufacturing a long material such as a wire rod or a bar by introducing a material to be rolled into a pair of rolling rolls having a caliber and rolling the material. During rolling, the distortion in the cross-sectional shape of the rolled material rolled by the rolling rolls is reduced by integrally moving the pair of rolls in the roll axis direction with respect to the pass line of the rolled material. It is something to be corrected.

In the split rolling method according to the present invention, a material to be rolled is introduced into a pair of rolling rolls having a caliber and rolled, and the material to be rolled is divided in its longitudinal direction and rolled, thereby simultaneously rolling a plurality of wire rods and rods. In the splice I/rolling method for manufacturing long materials such as wood, before dividing the material to be rolled in the longitudinal direction, a rolling roll having a peanut-shaped caliper disposed on the "second liquid side" from the dividing point is used. During rolling, by moving integrally in the roll axis direction with respect to the pass line of the rolled material, the rolled material that is rolled by the rolling rolls into a substantially peanut-shaped cross-sectional shape is shaped approximately symmetrically. be.

The rolling mill according to the present invention has a pair of rotating shafts arranged in parallel, and a roll chock portion thereof is arranged between the pair of rotating shafts with an interval from both the rotating shafts I-. At the same time, the roll axis direction is the pair of rotations J
A pair of rolling rolls arranged perpendicular to the axial direction of the shirt I and the roll chocks of the pair of rolling rolls are gripped to rotate the shirt around the pair of rotating shirts 1. Two pairs of arms that can rotate integrally with the shirt l, and a drive that is passed between the two pairs of rotating shafts that transmit rotation in different directions to the pair of rotating shafts by the rotation of the arms. comprising a shaft, and a rotation means connected to the drive shaft and transmitting rotation to the drive sea left,
By rotating the rotating means, the pair of rolling rolls can be moved integrally in the axial direction of the rolls.

Historically, in the rolling mill according to the present invention, -7
A driving means that can rotate the pair of arms independently of the other pair of arms is connected to one of the pairs of arms.

(Function) When physically moving the pair of rolling rolls 20, 21 in the roll axis direction, the driving shaft 54 is rotated by the rotating means 57, and the pair of rotating shirts I and 27 are moved in the eyebrow direction. Turn it around. Then, each roll chock part 25.26
Since each pair of arms 29, 30.3132 gripping the rotating shirt 1 rotates integrally with 27, the pair of rolling rolls 20.21
moves in the axial direction, thereby making it possible to adjust the caliber position of the rolling rolls 20, 21 to the pass line 6 even during rolling.

Moreover, when the driving means 51 is operated, two pairs of A-J, 29
．． 30, 31, and 32, one arm 3L32 independently rotates around the rotating shaft 27 and moves in the roll axis direction of the rolling roll 21 via the roll chock portion 26. Therefore, the difference in caliber between the pair of rolling I calls 20 and 21 can be corrected.

(Example) Embodiments of the present invention will be described in detail below with reference to the drawings.

Figure 1 shows the Sujirin 1 rolling equipment, where 5 is a pressurized abrasive, [
j is a pass line, A 4j phase rolling mill BY, 1st to 8th
It consists of a stand. B is one intermediate rolling group, which is composed of ninth to twelfth stands 9 to 12.

C stands for I'nido rolling mill group, stands 13 to 16.
It consists of ~16. 17th Ba Slinta, 14th
It is provided on the downstream side of the stand 14 to divide the rolled material 4A5 in its longitudinal direction.

As shown in FIG. 2, each stand 9 to 16 has a pair of upper and lower rolling l
An inlet guide 22 is provided which guides the material 5 to be rolled into the caliber position of the rolling rolls 20.21. The population guide 22 is fixed to a rest bar or the like of the stand main body 23 via a clamp so that the first part of the population guide 22 is located on the pass line 6''. On the pair of upper and lower rolling wheels 20.21 of each stand 10-16, the rolled 4A'5 is successively shaped into rolled L7 on each stand 10-164r) with a bus schedule as shown in Fig. 3. In order to manufacture a product 24 such as a bar, calibers 18 and 19 of a shape corresponding to the shape of the product 24 are provided.

The lower pair of rolling rolls 20.21 are rotatably supported by the stand body 23 via roll chocks 25.26 at both ends, as shown in FIG. On the side surface of the stand body 23, a pair of rotating shirts 1-27 are arranged parallel to each other via bearings 28 on both front and rear sides of I:I-leochonk parts 25 and 26, respectively. Between the pair of rotating shafts 27, each U2-leochonk part 25.26 is arranged at a distance 27 from the rotating shirt 1, and in the direction of the roll axis of each rolling roll 20.21. The direction is perpendicular to the axial direction of the rotating shaft 27.

A pair of rotating shirts 1-274, as shown in Figures 4 to 7, arms 29, 30, 31, which grip each roll chock part 25, 26 on both front and rear sides. ．． 32 are provided in two pairs, one pair for each I call chunk portion 25 and 26. The arm 29.3+ on the second rolling roll 20 side is integrally equipped with a gripping part 33.34 for gripping the roll chock part 25, and the arm 29 is connected to the rotating shaft 2.
The arm 30 is rotatably supported by the arm 29.
It is keyed to the JJ shaft 27 on both sides of the lower part. Both arms 29 and 30 have gripping parts 33.
34 [1- Tighten while gripping part 25 (=
-1 It is integrally connected by a bolt 35 and a stopper bolt 36, and can rotate integrally with the rotating shaft 27.

In addition, the stopper bolt is brought into contact with the contact portion 37 of the arm 30,
Further, the tightening bolt 35 is pivotally supported on the arm 30 by a pin 38, and is removably engaged with a notch 39 of the arm 29.

The arm 31.32 on the lower rolling 11-rule 21 side similarly has a gripping portion 40, and when the roll chock portion 26 is gripped by the gripping portion 40, the tightening bolt 42 and the stopper pole! The arms 31 and 32 are both rotatably supported by the rotating shaft 27. A female body 45 is attached to the lower arm 32 via a pin 44, and the pair of female bodies 45 is attached to a uni-harrial structure extending from the spline section installed between the pair of arms 32. A male threaded portion 48 of an interlocking shaft 47 provided with a point 46 is screwed together. Arms 49 are keyed to the pair of rotating shirts j and 27 below the arms 32 so as to be movable together, and the pair of ρ arms 49 are interlocked via an interlocking shaft 47. In addition, the interlocking shaft 47 and each arm 49
means that the interlocking shaft 4 is connected to the rotation boss portion 50 of the arms 1 and 49.
They are connected by inserting 7 in a rotatable manner. The interlocking shirts I to 47 can be rotated by a tool or the like, and the interlocking shaft 47 and the female screw body I5 screwed into the male part 48 move the arm 3L32 of the 21 lower rolling rolls to the upper rolling roll. A driving means 51 is configured to rotate the shirt around the rotary shirt I and 27 independently of the twenty arms 29 and 30.

As shown in FIG. 4, FIG. 5, and FIG. 8, an arm 52 is keyed to the upper end of the pair of rotating shafts 27 so as to be integrally rotatable. They are interlocked and connected by a drive shaft 54 having a male threaded portion 53 in the opposite direction. Each male threaded portion 53 is screwed into a female threaded body 55 of each arm 52, and the drive shaft 54 is connected to a drive motor 57 via a universal joint 56 with a spline portion. motor 57
is attached to the stand main body 23 via a bracket I.58, and constitutes a rotating means for transmitting rotation to the drive shaft 54. 59 is a rotation detector.

In the above configuration, when producing a long material such as a wire rod or bar, the material to be rolled 5 is introduced between a pair of rolling rolls 20.
According to Caliba [19] of 21, the cross-sectional shape is changed from a square cross section to a peanut shape 5a according to a rolling schedule as shown in FIG. 3, for example.
, and is successively rolled into a predetermined cross-sectional shape up to the constricted shape 5b. Then, when the material to be rolled 5 passes through the fourteenth stand 14 and is shaped to a constricted shape 5h, the slitter 17
After dividing the rolled material 5 into two strands in the longitudinal direction, the strands are transferred to the 15th and 16th stands 15.
．． The product is passed between 16 rolling rolls 20 and 21, and finish rolling is performed to obtain a product 24 having a circular cross section.

The material to be rolled 5 is divided in the longitudinal direction by a slitter 17.

No. 13 and No. 1 located on the -1-stream side from this dividing point.
The rolling rolls 20, 21 of the 4-stan 1-river 3, 14 have substantially peanut-shaped calibers 18, 19, and if the caliber position deviates from the pass line 6 to the left or right, A pair of upper and lower rolling rolls 20 and 21 are moved integrally in the roll axis direction during rolling to align the caliber position with the pass line 6. Therefore, since the material to be rolled 5 can be shaped into a symmetrical peanut shape 5a, the slitter 1
It is now possible to divide the product evenly by 7, reducing variations in product unit weight.
Alternatively, breakage etc. can be prevented.

Further, in the 16th stand 16, final finish rolling is performed so that the product 24 has a circular cross section. At this time, if the caliber positions of the rolling rolls 20 and 21 are shifted to the left and right, the product 24
Since distortion occurs in the cross-sectional shape of the rolls, the two pairs of rolling rolls 20 and 21 are moved together in the roll axis direction to adjust the caliper position. The same applies to the fifteenth stand 15.

Even if the caliber positions of the upper and lower rolling rolls 20 and 21 are different in the axial direction of the rolls, distortion will occur in the shape of the rolled material 5, so in this case, the lower rolling roll 21 should be moved in the axial direction of the rolls. Then, the caliber 19 is made to coincide with the caliber 18 of the upper rolling roll 20.

As mentioned above, the rolling rolls 20 and 21 are moved in the roll axis direction during rolling to adjust the position of the caliber, and at this time, they are operated as follows.

The upper and lower pair of rolling rolls 20 and 21 are moved integrally.
In this case, once the drive motor 57 is activated, the rotation is transmitted to the drive shaft 54, so this drive shut 54 rotates, and the female threads that are screwed into each of the male threaded portions 53 rotate. The pair of arms 52 swing in opposite force directions via the body 55, transmitting rotation in different directions to the pair of rotating shirts 1-27. Therefore, since the pair of rotating shirts 1-27 rotate in different directions, each pair of arms 29°30.31
．． 32 rotate in opposite directions about the rotation shaft 27, and the pair of upper and lower rolling rolls 20, 21 physically move in the axial direction thereof. At this time, lower rolling! - On the roll 20 side, arms 29 and 30 rotate integrally with the rotating shaft 27, and on the lower rolling roll 21 side, an arm 49 fixed to a pair of rotating shafts 27 is connected by an interlocking shaft 47. A pair of arms 31.
32 rotates integrally with 27 to the rotation IJJ shaft 1. As a result, the roll chocks 25 and 26 move in the direction of the roll axis, and the caliber position of the rolling roll 20°21 can be aligned with the pass line 6.

'' If the calipers of the pair of rolling rolls 20 and 21 are different, the interlocking shaft 47 is rotated. Then, the male threaded part 48 of the interlocking shaft 47 and the female threaded body 45 that are screwed together.
The pair of left and right arms 31 and 32 rotate around the rotation shaft 27 via the roll chock portion 26, and only the lower rolling roll 21 moves in the axial direction via the roll chock portion 26.

At this time, the lower rolling [coal 20 remains fixed,
This makes it possible to correct the difference in caliber between the upper and lower rolling rolls 20 and 21.

Roll chock portions 25, 2 of rolling rolls 20, 2]
6 has a larger diameter than the shaft for moving the entrance guide 22, so it has high rigidity and is easier to move in the roll axis direction than the entrance guide 22.

In addition, in the embodiment, when the caliber is different, the lower rolling roll 21
Although the structure is such that the upper rolling roll 20 is moved, it is also possible to move the upper rolling roll 20.

Also, drive shirt] 54 has a structure with left and right hem, but is this a L? For example, it is not a fixed thing, but for example, you can set Hehergya oppositely on both ends, and then connect the Hehergya to a pair of times. You may also engage the helgae of the jJ shaft 27.

(Effects of the Invention) According to the rolling method of the present invention, during rolling, by physically moving the rolling roll of -ta.j in the roll axis direction with respect to the pass line of the material to be rolled, Since the distortion in the cross-sectional shape of the rolling target (A) that is rolled by the rolling process is corrected, the adjustment can be made more easily and safely than when moving the guide side.

In addition, in the split rolling method of the present invention, before dividing the material to be rolled in the longitudinal direction, a rolling roll having a peanut-shaped caliber disposed upstream from the dividing point is used to pass the material to be rolled during rolling. By moving the roll integrally with respect to the line in the roll axis direction, the rolled material to be rolled by the rolling roll into a substantially peanut-shaped cross-sectional shape is shaped substantially symmetrically, so adjustment is easy and safe, and Through this adjustment, the material to be rolled can be divided equally, and variations in product unit weight can be prevented.

Furthermore, in the rolling mill of the present invention, the roll chock portion is disposed between the pair of rotating shafts arranged in parallel and the pair of rotating shirts 1 with a dovetail space between the two rotating shafts. At the same time, a pair of rolling rolls are arranged such that the axial direction of the rolls is perpendicular to the axial direction of the pair of rotating shafts, and the roll chocks of the pair of rolling rolls are gripped and the pair of rotating shafts are centered. and two pairs of arms that can rotate integrally with the rotating shaft, and the pair of rotating shirts I that transmit rotation in different directions to the pair of rotating shafts by their rotation. It consists of a driving shirt 1-, which is connected to the drive shaft, and a rotation means for transmitting rotation to the drive shaft, and the rotation of the rotation means unites the pair of rolling rolls in the axial direction of the rolls. Since it is movable, it is mechanically easier to adjust than the entrance guide side, and it is also easier to handle during adjustment.

Further, in the rolling mill of the present invention, a driving means that can rotate the pair of arms independently of the other pair of arms is connected to one of the two pairs of arms, so that the rolling mill of the pair of rolling rolls can be rotated. You can also adjust the difference in caliber.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a schematic diagram of the rolling equipment, a side view of the second rolling section, FIG. 3 is an explanatory diagram of the rolling schedule, and FIG. 4 is a side view of the rolling stand. Fig. 5 is a front sectional view of the same, Fig. 6 is a view taken along the Vl-VI arrow in Fig. 4,
Figure 7 is a view from the ■-■ arrow in Figure 4, and Figure 8 is the ■-■ arrow view in Figure 4.
■The arrow view and FIG. 9 are illustrations of rolling errors. 5... Rolled material, 6... Pass line, 18.19.
...Kariba, 20.21...Rolling roll, 23...
Stand body, 27... Rotating shaft, 29-31.
49...A l1.47...Interlocking shaft, 51.
...Driving means, 54...Driving shirt I..., 57...
Drive motor (rotation means).

Claims (4)

[Claims] (1) In a rolling method in which long materials such as wire rods and bars are manufactured by introducing a material to be rolled into a pair of rolling rolls having a caliber and rolling the material, during rolling, the pass line of the material to be rolled is A rolling method comprising: correcting distortion in the cross-sectional shape of a material to be rolled by the rolling rolls by integrally moving a pair of rolling rolls in the roll axis direction. (2) The material to be rolled is introduced into a pair of rolling rolls with calibers and rolled, and the material to be rolled is divided in the longitudinal direction and rolled, thereby simultaneously rolling multiple long materials such as wire rods and bars. In the split rolling method for manufacturing, before dividing the material to be rolled in the longitudinal direction, a rolling roll having a peanut-shaped caliber placed upstream of the dividing point is placed along the pass line of the material to be rolled during rolling. A split rolling method characterized in that the material to be rolled, which is rolled by the rolling rolls into a substantially peanut-shaped cross-sectional shape, is shaped substantially symmetrically by moving the material integrally in the axial direction of the rolls. (3) A pair of rotating shafts are arranged in parallel, and the roll chock part is arranged between the pair of rotating shafts with an interval between the two rotating shafts, and the roll axis direction is A pair of rolling rolls arranged perpendicular to the axial direction of the pair of rotating shafts, and a roll chock portion of the pair of rolling rolls are gripped and integrated with the rotating shaft around the pair of rotating shafts. two pairs of arms that are rotatable, a drive shaft that is bridged between the pair of rotary shafts that transmits rotation in different directions to the pair of rotary shafts by the rotation of the arms; It is characterized by comprising a rotating means connected to each other to transmit rotation to the drive shaft, and by rotation of the rotating means, the pair of rolling rolls can be integrally moved in the axial direction of the rolls. rolling machine. (4) The rolling mill according to claim 3, wherein one of the two pairs of arms is connected to a driving means that can rotate the pair of arms independently of the other pair of arms. .