JPS6072603A - Device for adjusting width of rollng roll - Google Patents

Abstract

PURPOSE:To adjust the width of a roll in an on-line state in accordance with the dimension changing of a H-beam and to improve production efficiency by dividing a horizontal roll in two in its axial direction and displacing both rolls in the direction of the driving axis through gears, clutches, and thrust rings. CONSTITUTION:A gear 19a is integrated with a thrust ring 17a by a clutch 18a provided to the ring 17a, in a state that the horizontal roll 11 of a H-beam rolling stand is fixed. When the gear 19a engaging with a pinion 20a is rotated, the ring 17a rotates around a driving axis 13 through a metal 16a. A roll axis 12a engaging with the ring 17a is displaced in the arrow-29 direction through a screw 15a, because the displacement of the ring 17a in the axial direction is restricted with respect to the axis 13. The width of horizontal roll is made optionally adjustable by this mechanism, and the need for an operation of roll exchanging, etc. is eliminated at the time of changing the dimensions of an H- beam, and the production efficiency is improved.

Description

Detailed Description of the Invention (a) Industrial Application Field The present invention relates to a rolling roll width adjusting device, and more specifically, a horizontal roll width adjusting device that can arbitrarily adjust the horizontal roll width of an H-shape rolling mill. Regarding equipment. This is used in the field of rolling IJ sections of different dimensions with a universal mill or an edging mill.

(b) Conventional technology A roll width adjustment device that can change the width of horizontal rolls for rolling different N-method H-beams in a universal mill or an edging mill, for example,
120 (134°) (There is a type shown in Fig. 1 described in the funeral. In this, one roll is divided into two in the axial direction, and the H-shape with the required width θ, When rolling the steel 1, a spacer 3 of a predetermined size is interposed between two rolls 2a and 2b, and this is integrated with the rolls by means of poles 1 to 4.

In such a rolling roll, spacers of 17 different sizes are required depending on the dimensions of the H-beam product, and a large number of spacers must be prepared to accommodate the various dimensions. I have to pray for you. Furthermore, in order to maintain the dimensional accuracy of the product, it is important to control the width of the horizontal roll, that is, the thickness of the spacer, but since the roll itself has dimensional errors, it is necessary to change the thickness of the spacer each time.

Moreover, spacer replacement and I call width 111 =
The disadvantage is that the work a requires a lot of time, and that it is impossible to replace the roll online and that the roll must be replaced with another roll that has been prepared offline.

(C) Purpose of the Invention The purpose of the present invention was to solve the above-mentioned drawbacks, and the purpose of the present invention is to make it possible to adjust the width of the horizontal roll steplessly online without using replacement parts. The purpose of the present invention is to provide a tlIII adjustment device.

(d) Structure of the Invention The structure of the present invention will be explained with reference to the drawings. As shown in FIG. It is divided into two in the direction, and both rolls Ila and Ilb and the roll city 1
2a and 12b are externally fitted onto one roll drive shaft 13 so as to be able to be displaced in the axial direction, and screws 15a and 15b are carved on the outer periphery of the shaft ends of both roll shafts 12a and 12b.
Thrust rings 17a and 17b, which are rotatable relative to the roll drive shaft 13, are engaged with a and 15b, and gears I9a and 19b are fitted onto the thrust rings 17a and 17b.
Clutch devices 18a, 18b are provided which transmit rotational force through the gears 19a, 19b, and a pinion 20a, which meshes with the gears 19a, 19b.
The pinion drive shafts 21a, 21b that drive the rolls 23a, 20b are
3b is a rolling roll width adjusting device that is rotatably supported within outer boxes 24a and 24b that are integral with the rolling roll.

In the second invention, as shown in FIG. 4, the horizontal roll 11 of the mill for rolling the H-section steel 1 is divided into two in the axial direction, and one roll 33a and the roll shaft 34-
A hollow part is formed in a, and the other roll 3 is formed in this hollow part.
A screw 39 is carved on the outer periphery of the roll shaft 34a of the roll 33a, and the screw 39 is engraved on the outer periphery of the roll shaft 34a of the roll 33a. Roll shaft 34 of roll 33b. A relatively rotatable thrust ring 17a is engaged with the thrust ring 17a, and a gear 11]a is provided to fit onto the thrust ring 17a, and a clutch device 18a is provided to transmit rotational force via the first and second gears 19a. A gear 38 is provided on the outer periphery of a bearing box 36 for a thrust bearing 37 provided on the roll shaft 313 of one roll 33a, and an inner surface of an outer box 24 integral with the chock 23a that supports one roll 33a. The rolling roll width adjusting device includes a pinion drive shaft 21 which is provided with an engaging screw 39 and which drives pinions 20A and 20B that engage two gears 19a and 38 and is supported within an outer box 24.

(e) Examples Hereinafter, the present invention will be explained in detail based on examples thereof.

Figure 2 shows an embodiment of the first invention. Roll lla, 1. ] Consists of b. Hollow portions are formed in these rolls and their roll shafts 12a and 12b,
It is externally fitted onto one roll drive shaft 13 via a key 14 so as to be displaceable only in the axial direction. As shown in FIG. 3, 15a and 15b are screws carved on the outer periphery of the shaft ends of the respective one-call shafts 12a and 12b. Thrust rings 17a and 17b, which are relatively rotatable, are nrrh fitted together via metals 16a and 16b.

], 8a, 18F) is a clutch device fixed to the outer periphery of the thrust ring, and gears 19a, 19b, which are engaged and released by this, are fitted onto the thrust rings 17a, 17b.20a, 20b. are pinions that mesh with these gears, 21a and 21b are pinion drive shafts that drive the respective pinions, and l call 1 ],
a and Ilb via radial bearings 22a and 22b, and are supported in outer boxes 24a and 24b that are integral with shafts 23a and 23b, and are not shown in the drawings.
The power from the electric motor is transmitted to this drive shaft.
It looks like this. In addition, 25 ba 2 chiyo, 7 ri 23
a and 23b; 26 is a thrust bearing for receiving the thrust force acting on the roll drive shaft 13 with the chock 23a via the outer box 24a;
Reference numeral 27 designates a clamping portion using a chock clamp (not shown) for mounting and fixing the entire chock to which the horizontal roll 11 is fitted onto a mill stand.

According to the embodiment having such a configuration, the interval between the rolls lla and llb can be adjusted as follows. Note that since the movement of roll llb is similar to that of roll 11a, the roll 11a shown in FIG. 3 will be described.

With the entire chock containing the horizontal roll 11 mounted on the mill stand and fixed by the chock clamp, the gear 19a and the thrust ring 1 are connected by the clutch device 18a installed on the thrust ring L7a.
7a is integrated. When the pinion drive shaft 21a rotates and slides in the direction of arrow 28, for example, the gear 19a meshing with the pinion 20a rotates and the thrust ring 17. 1 rotates around the roll drive shaft 13 via the metal 16a.

Since the thrust ring 17a is restrained from axial displacement with respect to the roll drive shaft 13, the roll shaft 12a meshing with the thrust ring 17a is displaced in the direction of arrow 29 via the screw 15a. Then, fix the knob shaft 12a to the lock 23rl.

The roll lla is moved to the desired position shown by the imaginary line in FIG. 2 while causing slippage between the roll lla and the radial bearing 22a. If such an operation is performed for the roll 11b as well, both the rolls Ila and 11b will come close to each other, and the width of the horizontal roll 11 can be adjusted to a desired dimension.

It goes without saying that the width of the horizontal roll 11 can be increased by driving the pinion drive shafts 2], a, and 2lb in the opposite direction to the two sets. In addition, both rolls 11
; By moving I and 11b by the same amount, the center line 30 of the horizontal roll 11 can be maintained at its position, and by changing the rotational slip of the pinion drive shafts 21a and 21b, the roll lla
, llb transfer! If you change the amount of 1iJJ, the center line 3
The position of 0 can also be changed. Further, in general, pinions, gears, screws, etc. may have the same specifications for both rolls, or may have different specifications depending on the drive control form of the pinion drive shaft.

When the width adjustment of the horizontal roll 11 is completed, the integration of the thrust rings 17a, L7b and the gears 19a, 19b by the clutch devices 18a, 18b, which are electromagnetic clutches, for example, is released. When the roll drive shaft 13 is driven in the direction of the arrow 31, its rotation is caused by the key 14 to drive the two rolls l.
The horizontal roll 11 cooperates with another horizontal roll (not shown) whose width has been adjusted according to the above procedure and a pair of vertical rolls (not shown) to roll the H-section steel 1 to a desired size. It will be done. At that time, the rolling reaction force acting on the horizontal roll 11 in the directions of arrows 32a and 32b is
, 15b, the thrust bearing LJ is received and stopped by the roll drive shaft 13 via the thrust rings 17a, 17b, and the thrust bearing generated by the difference in rolling reaction force in the directions of arrows 32a, 32b is received by the thrust bearing 26 via the roll drive shaft 13. Retained.

When the rolling of a product of a predetermined size is completed and an I-T section of another size is to be rolled, the roll width can be adjusted as described above without stopping the movement of the rolling line and before the next rolled product arrives. Once adjusted, rolling work can begin immediately.

FIG. 4 shows an embodiment of the second invention, and the same reference numerals are given to the parts that are similar in structure to those of the above-mentioned invention, and the explanation thereof will be omitted. In the figure, 33a, 331] are rolls divided into two parts, one roll 33a and its roll shaft 34a having a hollow part, and the other roll 33b's roll shaft 34. b extends in such a manner that the rolls can be displaced in the axial direction by means of a key 35. One l-tor 33a is equipped with the same structure as the above-mentioned invention, but it is different from the other l-ru 33b as will be described later.
It has the function to move the Reference numeral 36 also shown in FIG. 5 is a bearing box that holds a thrust bearing; 37 for the horizontal roll 11, and a gear 38 is carved on the outer periphery of the bearing box.
A screw 39 that engages with the inner surface of the integral outer box 24 is carved into the chock 23a that supports one of the seals 33a. 21 is a pinion drive shaft that drives pinions 20Δ and 2013 that mesh with gears 192 and 38, respectively;
4 is supported on the shaft. The screw 152 carved on the outer periphery of the end of the roll shaft 34a and the screw 39 carved on the outer periphery of the bearing box 36 rotate in opposite directions, and the thread pitch of the former is twice that of the latter. It is formed so that

According to this embodiment, when the pinion drive shaft 21 is driven, the pinion 2OB rotates and the bearing box 36 also rotates. Since the screw 39 carved on the outer periphery engages with the outer box 24, the bearing box 36 moves in the direction of arrow 40.

As a result, the roll shaft 34a is rotated through the thrust bearing 37 and the roll shaft 34. b is a screw 15a, a thrust ring 17. are displaced in the same direction via a. On the other hand, similarly to the above-described invention, the clutch device 18a causes the gear 19 to
After the thrust ring 11a is integrated with the thrust ring 11a, the pinion drive shaft 2 is rotated as described above, so the thrust ring 17a rotates around the roll shaft 31b via the metal 16a. Thrust ring 17a and roll shaft 34
Since the axial displacement is restricted with respect to b, the roll shaft 34b is displaced in the direction of arrow 41 by the reverse screw 15a meshing with the thrust ring 17a. Since the screw pinch of this displacement chamber is twice that of the screw 39, the amount of displacement of the roll shaft 34b is twice that of the roll or +t+ 34a. Therefore, the relative displacement amounts of both rolls 33a and 33b are equal, and the position iη of the center line 30 of the horizontal roll 11 is
is retained. Note that if the pinion drive shaft 21 is rotated in the opposite direction, the 11-rules 33a and 33b are separated, so that the width of the horizontal roll 11 can be arbitrarily adjusted. In addition,
When rolling the product, by disengaging the clutch device 18a, the rolling operation can be carried out in the same manner as described above.

In this embodiment, the displacement of both rolls can be achieved by simply rotating one pinion drive shaft 21, and only one drive source is required, making it extremely easy to control the drive shaft for adjusting the width L)14. There are advantages.

FIG. 6 shows a different embodiment, in which the aforementioned pinion drive shaft is replaced with two drive shafts 42A to which pinions 20A and 20B are fixed, which independently mesh with two gears I9a and 38, respectively, as shown in FIG. , 42B. In this embodiment, there is no need to make the screws 15a and 39 have opposite threads or to make them have different pitches, and by rotating the two pinion drive shafts 42A and 42B by the same amount in opposite directions, the horizontal roll can be rotated. Different to maintain centerline and make width adjustment.

Furthermore, the amount of displacement of the rolls can be varied as needed. Therefore, for example, if the mechanism shown in Figure 4 is used to adjust the width of the lower horizontal roll of a pair of horizontal rolls in a mill, and the mechanism shown in Figure 6 is used for the upper horizontal roll, the lower 1 by adjusting the axial displacement of the second horizontal roll to match the width setting by the side horizontal roll.
It is also possible to precisely match pairs of horizontal rolls.

In both inventions, an example is shown in which the clutch device is fixed to the outer periphery of the thrust ring, but in the case of FIGS. Needless to say, it may be provided at a location that has a function.

(f) Effects of the Invention According to the present invention, the horizontal roll is divided into two in the axial direction, and each is equipped with a roll displacement adjustment mechanism, so that the width of the horizontal roll can be arbitrarily adjusted online. Moreover, the product can be rolled immediately by disengaging the adjustment mechanism by the clutch device. Therefore, it is possible to roll 1-1 section steel of any size, and it is possible to cope with production of a wide variety of products in small quantities, and the work of changing rolls for that purpose can be eliminated, thereby improving production efficiency. Furthermore, it is also possible to perform operations such as checking the dimensions of a single product and improving its accuracy.

[Brief explanation of the drawing]

Fig. 1 is a conventional example of a device for adjusting the width of rolling rolls, Fig. 2 is an overall configuration diagram of an embodiment of the first invention, partially cut away, and Fig. 3 is an enlarged view of the main parts of Fig. 2. Fig. 4 is a partial cross-sectional view of a composite body showing a different embodiment of the invention, Fig. 5 is an enlarged view of the main part of Fig. 4, and Fig. 6 is a clay figure! Enlarged view of main parts of Example 7,
The figure is a simplified cross-sectional view taken along the line II-II in FIG. 6. 1-H section steel, 11-horizontal roll, 11a111b, 33
a, 33b-o-le, 12a, 12b, 34a, 34b
- roll shaft, 13-o-roll drive shaft, 14.35-key,
15a, 15b, 39° screw, 17a, 17b - Thrust ring, 18a, 18b - Clutch device, 19a
, 19b, 38-gear, 20a, 20b, 20A, 20
B-pinion, 21, 21a, 21b, 42Δ, 42
B-°-pinion drive shaft, 24.24a, 24b-outer box, 36-bearing box, 37-thrust bearing Patent applicant Kawasaki Heavy Industries, Ltd.

Claims (4)

[Claims] (1) The horizontal roll of the H-shaped rolling mill is divided into two parts in the axial direction, and both rolls are externally fitted onto one roll drive shaft so as to be movable in the axial direction. A thrust ring that is rotatable relative to the roll drive shaft is engaged with the screw, and a gear that fits onto the thrust ring is provided, and a clutch device is provided that transmits rotational force through this gear. A rolling roll width adjusting device, characterized in that a pinion drive shaft that drives a pinion that meshes with the gear is supported in an outer box that is integrated with a chock that supports each of the rolls. (2) The horizontal roll of the H-shaped rolling mill is divided into two in the axial direction, and a hollow part is formed in one roll and the roll shaft, and in this hollow part, the other 1 torr l:
Extend the I-roll shaft to its axial rotation (+'7: uJ), carve a screw on the outer periphery of the roll shaft end of the one roll, and attach a screw to the screw on the outer periphery of the roll shaft end of the one roll. 1. A thrust ring that can be rotated freely is engaged with the thrust ring, and a gear is provided to fit around the thrust ring, and a clutch device is provided to transmit rotational force through this gear, and the above-mentioned one A gear and a screw that engages with the inner surface of the outer box that is integral with the chock that supports the one roll are carved on the outer periphery of the bearing box for the thrust bearing installed on the roll shaft of the roll, and 2. A rolling roll width adjusting device characterized in that a pinion drive shaft for driving a pinion meshing with two gears is supported within the outer box. (3) The pinion drive shaft is fixed with two pinions that mesh with the two gears, and the screws carved on the outer periphery of the shaft end are opposite to the screws carved on the outer periphery of the bearing box. 2. The rolling width adjusting device according to claim 2, wherein the rolling width adjustment device is a screw, and the screw pitch of the former is twice that of the latter. (4) The rolling roll width adjustment according to claim 2, wherein the pinion drive shafts are two drive shafts to which one pinion that independently meshes with the two gears is fixed. Device.