JPH0133243B2 - - Google Patents

Description

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

(b) Prior art For example, Japanese Utility Model Application Publication No. 51-20034 discloses a roll width adjusting device that can change the width of horizontal rolls in order to roll H-beams of different dimensions with a universal mill or an edge mill. There is one as shown in FIG. This means that one roll is divided into two in the axial direction, and when rolling an H-section steel 1 with the required dimension L, two rolls 2
A spacer 3 of a predetermined size is interposed between a and 2b, and this is integrated with the roll by bolts 4 or the like.

For such rolling rolls, spacers with different thicknesses are required depending on the dimensions of the product H-shaped steel, and in order to accommodate the various dimensions, it is necessary to prepare a large number of spacers. It won't happen. 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 spacer thickness each time. Moreover, it takes a lot of time to replace the spacer and adjust the roll width, and it is impossible to replace the spacer online, which has the disadvantage that it must be replaced with another roll that has been prepared and adjusted offline. be.

(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 provide a rolling roll width that allows the width adjustment of a horizontal roll to be made steplessly online without using replacement parts. An object of the present invention is to provide a regulating device.

(d) Structure of the Invention To explain the structure of the present invention with reference to the drawings, the first invention is as shown in FIG. Both rolls 11a and 11b are divided into two parts.
The roll shafts 12a, 12b are externally fitted onto one roll drive shaft 13 so as to be displaceable in the axial direction, and screws 15a, 15 are attached to the outer peripheries of the shaft ends of both roll shafts 12a, 12b.
b is engraved, and the screws 15a, 15b are
Thrust rings 17a and 17b that are relatively rotatable are engaged with the roll drive shaft 13, and gears 19a and 19a are fitted onto the thrust rings 17a and 17b.
19b, and these gears 19a, 19b
A clutch device 18 that transmits rotational force via
a, 18b are provided, and the gears 19a, 19b are provided.
Pinion drive shafts 21a and 21b drive pinions 20a and 20b that mesh with each roll 11.
This is a rolling roll width adjustment device that is supported within outer boxes 24a and 24b that are integral with jocks 23a and 23b that support shafts a and 11b.

The second invention, as shown in FIG.
The horizontal roll 11 of the mill for rolling is divided into two in the axial direction, and a hollow part is formed in one roll 33a and its roll shaft 34a, and the roll shaft 34b of the other roll 33b is inserted into this hollow part. One roll 3 is extended so as to be axially displaceable.
A screw 39 is carved on the outer periphery of the end of the roll shaft 34a of the roll 3a, and the screw 39 is attached to the other roll 33b.
A relatively rotatable thrust ring 17a is engaged with the roll shaft 34b of the thrust ring 1.
A clutch device 18a is provided for transmitting rotational force through the gear 19a, and a bearing box 36 for the thrust bearing 37 provided on the roll shaft 34a of one of the rolls 33a is provided. A gear 38 and a screw 39 that engages with the inner surface of the outer box 24, which is integral with the chock 23a that supports one roll 33a, are carved on the outer periphery.
A pinion 20 that meshes with two gears 19a and 38
A pinion drive shaft 21 that drives A and 20B is a rolling roll width adjustment device that is supported within an outer box 24.

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

FIG. 2 shows an embodiment of the first invention, and in the figure, 11 is one of two horizontal rolls of a universal mill that rolls the H-section steel 1, and this is a roll divided into two in the axial direction. It consists of 11a and 11b. These rolls and their roll shafts 12a, 12b
A hollow part is formed in the roll drive shaft 13, and the roll drive shaft 13 is fitted onto the outside of the roll drive shaft 13 via a key 14 so as to be displaceable only in the axial direction. 15a and 15b are screws carved on the outer periphery of the shaft end of each roll shaft 12a and 12b, as shown in FIG.
Thrust rings 17a and 17b are engaged with the roll drive shaft 13, the axial displacement of which is restricted, and which are relatively rotatable via metals 16a and 16b. Numerals 18a and 18b are clutch devices fixed to the outer periphery of the thrust ring, and gears 19a and 19b that are engaged and disengaged by this are connected to the thrust ring 17.
a, 17b. 20a and 20b are pinions that mesh with these gears, respectively; 21
a, 21b are pinion drive shafts that drive the respective pinions; outer boxes 24a,
Although not shown, power from an electric motor is transmitted to this drive shaft. In addition, 25 is two ticks 23
A chock connecting rod that maintains the spacing between a and 23b, 2
6 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, and 27 is a shaft bearing (not shown) for mounting and fixing the entire chock on which the horizontal roll 11 is fitted to a mill stand. This is a clamp part using a chock clamp.

According to the embodiment having such a configuration, the distance between the rolls 11a and 11b can be adjusted as follows. Note that the movement of roll 11b is similar to that of roll 1.
1a, so the roll 11 shown in FIG.
Let us explain about a.

With the entire chock including the horizontal roll 11 mounted on the mill stand and fixed with a chock clamp, the clutch device 18a provided on the thrust ring 17a is used to shift the gear 1.
9a and thrust ring 17a are integrated. When the pinion drive shaft 21a is rotated, for example, in the direction of arrow 28, the gear 1 that meshes with the pinion 20a
9a rotates, and the thrust ring 17a rotates around the roll drive shaft 13 via the metal 16a.
Since the thrust ring 17a is restrained from being displaced in the axial direction with respect to the roll drive shaft 13, the roll shaft 12a engaged with the thrust ring 17a is displaced in the direction of arrow 29 via the screw 15a. The roll shaft 12a slides between the roll shaft 12a and the radial bearing 22a fixed to the chock 23a, and moves the roll 11a to the desired position shown by the imaginary line in FIG. If such an operation is performed for the roll 11b as well, both the rolls 11a, 1
1b are close to each other, and the width of the horizontal roll 11 can be adjusted to a desired dimension. If the pinion drive shafts 21a and 21b are driven in the opposite direction to the above,
Needless to say, the width of the horizontal roll 11 can be increased. In addition, both rolls 11a, 11
If b is moved by the same amount, the position of the center line 30 of the horizontal roll 11 can be maintained, and if the amount of rotation of the pinion drive shafts 21a, 21b is changed to make the amount of movement of the rolls 11a, 11b different, The position of centerline 30 can also be changed. Further, although pinions, gears, screws, etc. generally have the same specifications for both rolls, they may be different depending on the drive control form of the pinion drive shaft.

When the width adjustment of the horizontal roll 11 is completed, the clutch devices 18a, 18b, which are electromagnetic clutches, for example, are activated.
Thrust rings 17a, 17b and gear 19
The integration with a and 19b is released. When the roll drive shaft 13 is driven in the direction of the arrow 31, its rotation is transmitted through the key 14 to the two rolls 11a, 11b.
The horizontal roll 11 cooperates with another horizontal roll (not shown) whose width has been adjusted according to the above-described procedure and a pair of vertical rolls (not shown) to roll the H-section steel 1 to a desired size. At that time, the rolling reaction force acting on the horizontal roll 11 in the directions of arrows 32a and 32b is caused by the screws 15a and 15b and the thrust ring 1.
The thrust force generated by the difference in rolling reaction force in the directions of arrows 32a and 32b is received by the roll drive shaft 13 via the rollers 7a and 17b.
It is held by a thrust bearing 26 via. When the rolling of a product of a predetermined size is completed and H-beam steel of another size is to be rolled, the roll width is adjusted as described above without stopping the movement of the rolling line until the next rolled material arrives. Then you can start rolling work immediately.

FIG. 4 shows an embodiment of the second invention, and the same reference numerals are given to the parts that are the same in structure as the above-mentioned invention, and the explanation thereof will be omitted. In the figure, 33a and 33b are two rolls, one roll 33a and its roll shaft 34a are formed with a hollow part, and the roll shaft 34b of the other roll 33b is connected to the rolls by a key 35. is extended so that it can be displaced only in the axial direction. One roll 33a is equipped with the same structure as the above-mentioned invention, but it is different from the other roll 33b as described later
It has the function of moving. 36 also shown in Figure 5
is a bearing box that holds a thrust bearing 37 for the horizontal roll 11, and has a gear 38 carved on its outer periphery, and an inner surface of an outer box 24 that is integral with a chock 23a that supports one roll 33a. Engraving screws 39 are provided. 21 is gear 19
Pinions 20A and 2 that mesh with a and 38, respectively
It is a pinion drive shaft that drives 0B, and is supported by the outer box 24. The screw 15a 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 are screws that rotate in opposite directions, and the thread pitch of the former is twice that of the latter. It is formed so that

According to such an embodiment, the pinion drive shaft 2
1 is driven, the pinion 20B rotates and the bearing box 36 also rotates. Screw 3 carved on its outer circumference
9 is engaged with the outer box 24, so the bearing box 36
moves in the direction of arrow 40. As a result, the roll shaft 34a is connected to the thrust bearing 37, and the roll shaft 34b is connected to the screw 15a through the thrust ring 17a.
are displaced in the same direction via. On the other hand, similarly to the above-described invention, the clutch device 18a causes the gear 19 to
After the thrust ring 17a is integrated with the thrust ring 17a, the pinion drive shaft 21 is rotated as described above, so the thrust ring 17a rotates around the roll shaft 34b via the metal 16a. Since the thrust ring 17a is restrained from being displaced in the axial direction with respect to the roll shaft 34b, the reverse screw 15a meshing with the thrust ring 17a allows the roll shaft 34
b is displaced in the direction of arrow 41. Since this displacement amount is twice that of the screw 39, the displacement amount of the roll shaft 34b is twice that of the roll shaft 34a. Therefore, the relative displacement amount of both rolls 33a, 33b becomes equal, and the position of the center line 30 of the horizontal roll 11 is maintained. Note that if the pinion drive shaft 21 is rotated in the opposite direction, the rolls 33a,
Since the rollers 33b are separated, the width of the horizontal roll 11 can be adjusted arbitrarily. Incidentally, when rolling the product, if the clutch device 18a is released, 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, which has the advantage that drive shaft control for width adjustment is extremely easy. .

FIG. 6 shows a different embodiment in which the aforementioned pinion drive shaft is connected to two gears 19a and 3 as shown in FIG.
Pinions 20A each independently mesh with 8,
Two drive shafts 42A, 42B to which 20B is fixed
That is. In this embodiment, there is no need for the screws 15a and 39 to be reverse threaded or to have different pitches, and the two pinion drive shafts 42A,
By rotating the rollers 42B by the same amount in opposite directions, the width can be adjusted while maintaining the center line of the horizontal roll. Furthermore, the amount of displacement of the rolls can be varied as needed. Therefore, for example, the mechanism shown in Fig. 4 may be used to adjust the width of the lower horizontal roll of a pair of horizontal rolls in a mill, and the mechanism shown in Fig. 6 may be used for the upper horizontal roll. For example, the axial displacement of the upper horizontal roll may be adjusted to match the width setting by the lower horizontal roll to precisely match the pair of horizontal rolls.

In both inventions, an example was shown in which the clutch device was fixed to the outer periphery of the thrust ring, but
In the case of FIGS. 2 and 6, it goes without saying that it may be provided on the pinion drive shaft, or may be provided at any other location having the same function.

(f) Effect of the invention According to the present invention, the horizontal roll is
Since the width of the horizontal rolls can be arbitrarily adjusted online, the product can be rolled immediately by releasing the adjustment mechanism using the clutch device. Therefore, H-beam steel of any size can be rolled, 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, and production efficiency can be improved. Furthermore, it is possible to perform operations such as checking the dimensions of a single product while improving accuracy.

[Brief explanation of drawings]

Fig. 1 is a conventional example of a device for adjusting the width of rolling rolls, Fig. 2 is a partial cross-sectional overall configuration diagram showing an embodiment of the first invention, Fig. 3 is an enlarged view of the main part of Fig. 2, and Fig. 3 is an enlarged view of main parts of Fig. 2. Fig. 4 is a partially cross-sectional overall configuration diagram showing a different embodiment of the invention, Fig. 5 is an enlarged view of the main part of Fig. 4, Fig. 6 is an enlarged view of the main part of a different embodiment, and Fig. 7 is an enlarged view of the main part of Fig. 6. It is a simplified diagram of a cross section taken along the line arrow - in the figure. 1...H-beam steel, 11...Horizontal roll, 11a,
11b, 33a, 33b...roll, 12a, 1
2b, 34a, 34b... Roll shaft, 13... Roll drive shaft, 14, 35... Key, 15a, 15
b, 39... Screw, 17a, 17b... Thrust ring, 18a, 18b... Clutch device, 19
a, 19b, 38...gear, 20a, 20b, 2
0A, 20B...Pinion, 21, 21a, 21
b, 42A, 42B...pinion drive shaft, 24,
24a, 24b...outer box, 36...bearing box, 37
...Thrust bearing.

Claims (1)

[Claims] 1. A horizontal roll of an H-section steel rolling mill is divided into two in the axial direction, and both rolls are externally fitted onto one roll drive shaft so as to be displaceable in the axial direction, and the shafts of both rolls are A screw is carved on the outer periphery of the end, a thrust ring that is rotatable relative to the roll drive shaft is engaged with the screw, and a gear is provided to fit on the thrust ring, and rotational force is transmitted through this gear. A rolling roll width adjusting device comprising: a clutch device; a pinion drive shaft for driving a pinion that engages with the clutch device; and a pinion drive shaft that drives a pinion that engages with the clutch device; the pinion drive shaft is supported in an outer box that is integrated with a chock that supports each of the rolls. 2 The horizontal roll of an H-section steel rolling mill is divided into two in the axial direction, and a hollow part is formed in one roll and its roll shaft, and the roll shaft of the other roll can be displaced in the axial direction in this hollow part. A screw is carved on the outer periphery of the roll shaft end of the one roll, and a thrust ring that is rotatable relative to the roll shaft of the other roll is engaged with the screw, and is fitted onto the thrust ring. A gear is provided, as well as a clutch device for transmitting rotational force through the gear, and the gear and the one roll are supported on the outer periphery of a bearing box for a thrust bearing provided on the roll shaft of the one roll. A rolling roll characterized in that a screw that engages with the inner surface of an integral outer box is carved into the chock of the rolling roll, and a pinion drive shaft that drives a pinion that engages with the two gears is supported within the outer box. Width adjustment device. 3. The pinion drive shaft has two pinions that mesh with the two gears fixed thereto, and a screw carved on the outer periphery of the end of the roll shaft and a screw carved on the outer periphery of the bearing box are opposite threads, and 3. The rolling roll width adjusting device according to claim 2, wherein the screw pitch of the former is twice that of the latter. 4. The rolling roll width adjusting device according to claim 2, wherein the pinion drive shafts are two drive shafts to which one pinion is fixed, each independently meshing with the two gears.