TWI610729B - Modular rolling mill - Google Patents

Abstract

A modular rolling mill has a rolling mill passing line, and the product is rolled in the rolling direction along the rolling mill passing line. The rolling mill includes a first gear unit arranged along a first line parallel to the passing line of the rolling mill. Each of the first gear units is separately driven by a motor and has a pair of mechanically interconnected first shafts. The second gear unit is arranged along a second line located between the first line and the rolling mill passing line and parallel to the second line. Each second gear unit has a pair of mechanically interconnected second shafts. The rolling unit is continuously arranged along the passing line of the rolling mill. Each rolling unit is driven by an input shaft and has a pair of roller shafts that carry work rolls and are mechanically interconnected. The first coupling connects the first shaft of each first gear unit to the second shaft of two continuous gear units, and the second coupling releasably connects the second shaft of the second gear unit to two consecutive gear units Input shaft. At least some of the first couplings include clutches that can be selectively disengaged to accommodate selected rolling units to be removed from the passing line.

Description

Modular roll mill

This application is a continuation of a part of United States Patent Application No. 12 / 797,656, filed on June 6, 2010, and the entire contents and main purpose of which is incorporated herein by reference.

The present invention relates generally to rolling mills, and more particularly to the setting of an improved modularized rolling mill for rolling long products such as rods and rods.

Referring first to FIG 5A, known modular rolling mill comprises a forming sequentially disposed in a plurality of rolling mill roll R on the cell line P is described by U.S. Patent No.5,595,083 has a break in Seoul (Shor _e) Type of study ₁ -R ₅ along which the product is rolled in the rolling direction shown by arrow 10. The gear units A ₁ -A _{4 are} arranged along a line L parallel to the factory passing line P. The gear units are individually driven by the motors M ₁ -M ₄ and are offset in the rolling direction with respect to the rolling unit. A continuous drive train is provided by connecting each gear unit to two continuous rolling units.

Generally, when rolling smaller product sizes such as rods with a diameter of 2.0-6.5mm, all rolling units R ₁ -R ₅ are used, the forming speed is as high as 120 m / s and the tonnage rating is 70-90 tons / hr. In this case, the rolling mill benefits from the power provided by all the motors M ₁ -M ₄ by the continuous drive trains provided by connecting each gear unit to two continuous rolling units. However, when rolling a larger product size at a lower speed and at a higher tonnage rating of 150 tons / hr, one or more rolling units at the exit end of the rolling mill bond are usually removed from the pass line. If the two rolling units are removed, as shown in Figure 5B, the last motor M ₄ is disconnected from the continuous drive train, so at a point in time when the power demand is increased due to the higher tonnage quota Reduces the power available to drive the rolling mill. In order to compensate for this lack of power, the rolling mill is equipped with a larger motor, which disadvantageously increases the overall cost of the rolling mill.

In the rolling mill described above, each of the rolling units R ₁ -R ₅ includes two opposite inclined roller pairs. This design is unique to the concept of modular rolling mills and cannot be readily adapted for use in other rolling locations, such as post-forming rolling mills of the type described in US Patent No. 5,325,697 owned by Shore et al.

The embodiment of the present invention relates to the setting of a modular forming rolling mill driven by a plurality of motors, and has a continuously driven gear train using one of all the total power regardless of the number of rolling units at any given time.

The embodiment of the present invention also relates to the setting of a modular forming rolling mill, in which the same rolling unit has a single pair of work rolls on an inclined axis, and wherein the rolling unit can be driven from the opposite side, and the like The work rolls are relatively inclined along the passing line of the rolling mill, thereby accommodating the reversing direction of the rolling unit.

The modular rolling mill according to the embodiment of the present invention includes a plurality of first gear units, and is arranged along a first line parallel to the passing line of the rolling mill. Each first gear reduction unit can be driven by a motor and has a first shaft mechanically interconnected.

The second gear unit is arranged along a second line that is parallel to and parallel to the first line and the rolling mill passing line. The second gear units are offset relative to the first gear unit in the rolling direction, and each second gear unit has a pair of mechanically interconnected second shafts.

A continuous drive train is provided by connecting the first shaft of each successive first gear unit to the second shaft of two successive second gear units.

The rolling unit is continuously arranged along the passing line. The continuous positions of the rolling units along the passing line are interchangeable with each other. Each rolling unit has a pair of work rolls carried on inclined roller shafts that are mechanically interconnected and driven by an input shaft. The second shaft of the second gear unit is detachably connected to the input shafts of the continuous rolling unit.

The connection of the first shaft of the first gear unit to the second shaft of the second gear unit is advantageously achieved by using both a conventional coupling and a strategic positioning clutch. The conventional coupling and the strategic positioning clutch are When other individual rolling units are removed from the pass line to accommodate different pass designs and rolling strokes, they can be disengaged to interrupt the drive connection of the selected second gear unit.

When viewed in the rolling direction, the individual first and second shafts of the first and second gear units are advantageously driven at gradually higher speeds, and the input shaft of the rolling unit is connected to each pair by gears. Roller shaft The size of the wheels is selected to achieve a percentage speed increase, which increase is the same for each rolling unit.

In order to achieve torsion-free rolling, the input shaft of the rolling unit protrudes from the opposite side, thereby reversing the orientation of the rolling unit to accommodate the rolling unit and the relative tilt of the rollers along the passing line of the rolling mill.

12‧‧‧Modularized Rolling Mill

A1-A4‧‧‧The first gear unit

L1‧‧‧Line 1

P‧‧‧Rolling mill passing line

18‧‧‧ Internal gear set

16‧‧‧ 1st axis

M1-M4‧‧‧ Motor

B1-B5‧‧‧ 2nd gear unit

L2‧‧‧line 2

22‧‧‧Gear Set

20‧‧‧ 2nd axis

24,25‧‧‧The first coupling

C1-C10‧‧‧Rolling unit

26‧‧‧axis

26 ’, 26” ‧‧‧End

32‧‧‧ roller

34‧‧‧Working roller

30‧‧‧Gear Set

28a, 28b ‧‧‧ bevel gear

36‧‧‧ 2nd coupling

Figure 1 is a top view of a modular forming roll mill according to the present invention.

Figures 2A and 2B are end views showing the reverse direction of the rolling unit.

Figure 3 is an illustration of a drive train of a rolling mill.

Figure 4 is an enlarged view of the internal drive of a general rolling unit.

Figures 5A and 5B are schematic views of the prior art.

FIG. 6 is a view of the modular forming rolling mill of the present invention, in which a selected rolling unit is removed from the rolling mill passing line.

Figure 7 is another view showing the rolling unit removed from the pass line to provide a different rolling mill structure.

These and other features and additional advantages of the present invention will be described in further detail with reference to the drawings.

Referring first to Figs. 1 and 3, the modularized rolling mill according to the present invention is indicated by the symbol 12. The modular rolling mill 12 is designed to roll long products such as rods, rods, etc. along the rolling mill through the line "P" in the rolling direction indicated by the arrow 14. The rolling mill includes first gear units A ₁ -A ₄ arranged along a first line L ₁ parallel to the rolling line P of the rolling mill. The first gear units are individually driven by motors M ₁ -M ₄ that are mechanically connected to the pair of first shafts 16 by the internal gear set 18.

The second gear unit B ₁ -B ₅ positioned along a first line L ₁ and passes between the two rolling mill line P L ₂ and arranged with both of the second parallel lines. Each second gear unit has a pair of second shafts 20 mechanically interconnected by a gear set 22. When viewed in the rolling direction, the second gear units B ₁ -B ₅ are offset from the first gear units A ₁ -A ₄ . The first couplings 24 and 25 are used to connect the first shaft 16 of each first gear unit A ₁ -A _{4 to} the second shaft 20 of two consecutive second gear units B ₁ -B ₅ . The coupling 24 is of a type that provides an uninterrupted connection, while the coupling 25 includes a clutch that can be disconnected to interrupt the drive connection between the individual first and second shafts 16, 20, respectively.

The rolling units C ₁ -C _{10 are} continuously arranged along the rolling mill passing line P. The rolling units are interchangeable with each other. It can be further clearly seen from FIG. 4 that each rolling unit has a shaft 26 connected to a roller shaft 32 carrying a work roller 34 through bevel gears 28 a, 28 b and a gear set 30.

Please also refer to Figures 2A and 2B. The roller shaft 32 can be tilted at an angle of 45 °, and one shaft 26 has ends 26 'and 26 "protruding from the opposite side of the rolling unit housing. The second coupling 36 is used to connect the second The second shaft 20 of the gear units B ₁ -B _{5 to} the shaft 26 of two continuous rolling units C. The direction of the rolling unit C can be alternately reversed along the rolling mill through line P, as shown in Figures 2A and 2B In order to accommodate the interaction of the rollers for the product torsion and free rolling, the interaction is tilted on the contrary, and the needs of the right-handed and left-handed rolling mills are accommodated.

When viewed in the rolling direction, the size of the internal gear set 18 of the first gear units A ₁ -A ₄ is determined to drive the shaft 16 at a stepwise higher speed. Similarly, when viewed again in the rolling direction, the size of the gear set 22 of the second gear units B _{1 to} B ₅ is determined to drive the shaft 18 at a stepwise higher speed.

Roll means C ₁ -C ₁₀ of bevel gears 28a, 28b of the line size as a percentage speed increase provided, which are the same for each roll unit. When reversibly connected to the rolling unit as shown in Figures 2A and 2B, this allows the rolling units to be interchanged with each other at any position along the rolling line passing line P, and then it is more possible to roll the unit with minimal residual Number to operate the rolling mill.

It must be mentioned that due to the continuous drive configuration provided by the first and second gear units A ₁ -A ₄ and B ₁ -B ₅ , all motors M ₁ -M ₄ can be used to run the rolling mill, and the The number of rolling units C used is irrelevant. Thus, for example, as shown in FIG. 1 and FIG. 3, when the small roller size molded product, all of the motor M ₁ -M ₄ and can be mechanically coupled to all of the rolling units C ₁ -C _10. Larger product sizes can be rolled by removing selected rolling units from the rolling mill through line P. This situation is shown in Figure 6. Although the rolling units C ₁ -C ₁₀ have been removed from the rolling mill pass line, all the motors M ₁ -M ₄ remain connected to the remaining rolling operations. unit.

When the clutch 25 is disengaged, as shown in FIG. 7, the rolling units C ₃ , C ₄ and C ₇ , C ₈ can be removed from the rolling mill through the line P. With this configuration, the drive sequence is:

M ₁ -A ₁ -B ₁ -C ₁ , C ₂

M ₂ -A ₂ -B ₃ -C ₅ , C ₆

M ₃ -A ₃ -B ₃ -C ₅ , C ₆

M ₄ -A ₄ -B ₅ -C ₉ , C ₁₀

Again, all motors can be used (although if only one motor is required for the rolling units C ₅ , C ₆ and the rolling load on them, even M ₂ or M ₃ may be turned off).

This type of rolling mill structure has added elasticity to accommodate different passing designs, especially for larger diameter products above 10mm. When performing lower temperature thermomechanical rolling, the cooling unit (not shown) can be positioned along the passing line withdrawn by the removed rolling unit (C ₃ and C ₄ or C ₇ and C ₈ ). In space.

Although the embodiments of the present invention have been disclosed in the form of examples, those skilled in the art should know that modifications, additions, deletions and modifications can be made without departing from the spirit and scope of the present invention and its equality. And the scope is regulated by the following patent application scope.

A1-A4‧‧‧The first gear unit

B1-B5‧‧‧ 2nd gear unit

C1-C10‧‧‧Rolling unit

M1-M4‧‧‧ Motor

P‧‧‧Rolling mill passing line

12‧‧‧Modularized Rolling Mill

24, 25‧‧‧ 1st coupling

36‧‧‧ 2nd coupling

Claims (11)

A modular rolling mill has a rolling mill passing line along which the product is rolled in the rolling direction. The modular rolling mill includes: a plurality of first gear units, along with the rolling mill. Through a line-parallel first line configuration, each first gear unit is driven by a motor and has a pair of mechanically interconnected first shafts; a plurality of second gear units are located along the first line and the rolling mill A second line is arranged between the two lines and is parallel to each other. Each second gear unit has a pair of mechanically interconnected second shafts. A plurality of rolling units are continuously arranged along the passing line. A rolling unit is driven by an input shaft and has a pair of rollers that carry work rolls and are mechanically interconnected; a first coupling means for providing the first shafts of each first gear unit with two continuous The drive connection between the second shafts of the second gear unit; and a second coupling means for releasably connecting the second shafts of the second gear unit to two consecutive rolling units The input shafts are characterized in that at least some of the first coupling means Including clutches, which can be disengaged to interrupt their respective drive connection of the selected second gear unit between the first and second shafts, wherein the pair is used to connect the pair of the same second gear unit The first coupling means for connecting the second shaft to the pair of first shafts of the corresponding first gear unit includes the clutches, and is used to separate a continuous second gear unit. The first coupling means for connecting the pair of second shafts of Yuan to the pair of first shafts of the corresponding first gear unit does not include such clutches. For example, the modularized rolling mill of the scope of application for patent No. 1 wherein the rolling units are interchangeable with each other at continuous positions along the line through which the rolling mill passes. For example, the modularized rolling mill in the scope of application for the first item of the patent, wherein when viewed in the rolling direction, the first shaft systems of the plurality of first gear units are gradually driven at a higher rotation speed. For example, the modularized rolling mill in the third scope of the patent application, wherein when viewed in the rolling direction, the second shaft systems of the plurality of second gear units are gradually driven at a higher speed. For example, the modularized rolling mill under the scope of patent application, in which the input shaft of each rolling unit is connected to each pair of mechanically interconnected roller shafts via gears, and the size of these gears is set to achieve a Percent speed increase, this speed increase is the same for each rolling unit. For example, the modularized rolling mill under the scope of patent application No. 2 in which the input shaft of each rolling unit is connected to each pair of mechanically interconnected roller shafts via gears, and the size of these gears is determined to achieve a Percent speed increase, this speed increase is the same for each rolling unit. For example, the modularized rolling mill under the scope of patent application No. 3, in which the input shaft of each rolling unit is connected to each pair of mechanically interconnected roller shafts via gears, and the size of these gears is determined to achieve a Percent speed increase, this speed increase is the same for each rolling unit. For example, the modularized rolling mill under the scope of patent application No. 4 in which the input shaft of each rolling unit is connected to each pair of machines via gears. The interconnected rollers are sized to achieve a percentage speed increase that is the same for each rolling unit. For example, the modularized rolling mill under the scope of the patent application, wherein the rolling units and the inclined plural roll shafts are all configured in the same manner, and the input shafts of the rolling units protrude from the opposite side, Thereby, in order to cooperate with the opposite directions of the interaction of the rolling units and the relative tilt of the roller axes along the passing line of the rolling mill. A modular rolling mill has a rolling mill passing line along which the product is rolled in the rolling direction. The modular rolling mill includes: a plurality of first gear units, along with the rolling mill. Through a line-parallel first line configuration, each first gear unit is driven by a motor and has a pair of mechanically interconnected first shafts; a plurality of second gear units are located along the first line and the rolling mill A second line is arranged between the two lines and is parallel to each other. Each second gear unit has a pair of mechanically interconnected second shafts. A plurality of identical rolling units are continuously arranged along the passing line. Each rolling unit is driven by an input shaft, which is connected to a pair of inclined roller shafts carrying work rolls via a plurality of gears. The size of the gears is set to achieve a percentage speed increase, which increases. It is the same for each rolling unit, in which the input shafts of the rolling units protrude from the opposite side, thereby matching the opposite directions of the interactions of the rolling units and their equal rolling axes along the rolling machine passing line Relative tilt A first coupling means for providing a driving connection between the first shafts of each first gear unit and the second shafts of two consecutive gear units, at least some of the first coupling means include: Clutches that can be disengaged to interrupt their individual drive connection of the selected second gear unit between the first and second shafts; and a second coupling means for releasably connecting the first gear units The second shaft of the 2 gear unit to the input shafts of two consecutive rolling units, wherein the second shaft of the same second gear unit and the second shaft of the corresponding first gear unit The first coupling means for one shaft connection includes the clutches, and the first coupling for connecting the pair of second shafts of a continuous second gear unit with the first shafts of the corresponding first gear unit. Means do not include such clutches. A modular rolling mill has a rolling mill passing line along which the product is rolled in the rolling direction. The modular rolling mill includes: a plurality of first gear units, along with the rolling mill. Through a line-parallel first line configuration, each first gear unit is driven by a motor and has a pair of mechanically interconnected first shafts, wherein when viewed in the rolling direction, the plurality of first gear units should The first shaft system is gradually driven at a higher speed; a plurality of second gear units are arranged along a second line located between and parallel to the first line and the rolling mill passing line, each A second gear unit having a pair of mechanically interconnected second shafts; A plurality of rolling units are interchangeable with each other in continuous positions along the passing line. Each rolling unit is driven by an input shaft and has a pair of rollers that carry work rolls and are mechanically interconnected. The first connection means, For providing a drive connection between the first shafts of each first gear unit and the second shafts of two consecutive gear units, at least some of the first coupling means include a clutch, which may be Disconnect to interrupt the drive connection of the selected second gear units between the individual first and second shafts; and a second coupling means for releasably connecting the second gear units The input shafts from the second shaft to two consecutive rolling units, where the pair of second shafts of the same second gear unit and the first shafts of the corresponding first gear unit are connected The first coupling means includes the clutches, and the first coupling means for connecting the pair of second shafts of a continuous second gear unit with the first shafts of the corresponding first gear unit does not include such clutch.