JPH01122616A - Tension leveler work roll changing device - Google Patents

Abstract

PURPOSE:To quickly change a work roll and to improve the working capacity by installing a roll holder and roll storing device on the rail laid so as to extend in the orthogonal direction with a plate pass line at the front and rear parts in the line direction of a lower roll unit. CONSTITUTION:Rails 15a, 15b are laid so as to extend in the orthogonal direction with a plate pass line S at the front and rear part in the line direction of a lower roll unit 11. A roll holder 17 is placed on the raills 15a, 15b and a roll storing device 18 is set up between the rails 15a, 15b. Only a work roll can thus be easily and quickly changed, so the straightening capacity can be drastically improved.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a work roll changing device for a tension leveler that corrects the shape of a plate.

[Prior art] Plate materials rolled by a rolling mill may have different thicknesses or different yield points in the width direction, and conventional methods have been used to correct variations in the mechanical properties of such plate materials. A tension leveler is used to do this.

Conventional methods for correcting plate shape using a tension leveler include the roll bending method in which a pending force is applied to a priddle roll or deflector roll,
There is a roll shift method in which the upper and lower work rolls are shifted in alternate directions, and a roll exchange method in which multiple work rolls with different crowns (including tapers) are prepared and the roll is used according to the plate shape. It has been adopted.

However, in the case of the above-mentioned roll bending method, the equipment is complicated, there are difficulties in high-speed sheet passing, and there are limits to the selection of the roll curve, which limits the expansion of straightening ability. In addition, in the case of the above-mentioned roll shift method, there are also problems such as the equipment becomes complicated, the plate material tends to meander, and the roll curve cannot be changed, so the correction ability is small. For,
Conventionally, a roll exchange method has mainly been adopted.

[Problems to be Solved by the Invention] However, in the conventional roll exchanging method described above, when exchanging work rolls, not only the work rolls but also intermediate rolls and backup rolls that support the work rolls are removed from the leveler frame at the same time. Since it is pulled out, it requires a lot of time and effort, and is a very complicated work (see Utility Model Application Publication No. 60-94318, etc.).

Therefore, the present invention aims to dramatically improve the ability to straighten plate shapes over a wide variety of ranges by making it possible to replace only the work roll in a short time.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a leveler frame in which a work roll unit having work rolls is installed, and a rail extending in a direction perpendicular to the sheet threading line.
A roll holder is laid on the rail with a length extending from inside the leveler frame to outside the leveler frame, and a roll holder capable of detachably holding the work roll is movably placed on the rail.
Furthermore, a roll storage device is provided at a position between the rails located outside the leveler frame to store a plurality of types of work rolls and to transfer the work rolls to and from the roll holder.

[Function 1] When replacing a work roll, a roll holder is inserted along the rail into the space between the roll unit and the threading line formed at the top of the roll unit, and then the work roll is held by the roll holder.

Next, the roll holder holding the work roll is pulled out and carried onto the roll storage device, the held work roll is stored in the storage device, and another work roll is received and held. After that, the roll holder holding another work roll is reinserted into the upper part of the roll unit, the work roll is placed on the roll unit, the roll holder is pulled out, and the roll unit is raised to replace the work roll. conduct.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show an embodiment of the present invention, in which an upper work roll 1, an intermediate roll 2, and a backup roll 3 supporting the upper work roll 1 via the intermediate roll 2 are rolled. A plurality of sets of upper roll units 5 held by a frame 4 are disposed so as to be movable up and down above the threading line in the leveler frame 6, and the lower work roll 7, the intermediate roll 8, and the lower A plurality of sets of lower roll units 11 each having a backup roll 9 that supports a work roll 7 via an intermediate roll 8 held by a roll frame 10 are arranged at a position below the threading line in the rebate frame 6. At the same time, the eight lower roll units 11 were individually movable up and down by the telescopic operation of jacks 13 installed on a base 12 in the leveler frame 6, and the base 12 was installed at the lower part of the leveler frame 6. In a tension leveler that can be raised and lowered by the telescopic operation of the main cylinder 14, levelers are installed at the front and rear of each lower roll unit 11 in the line direction so that only the lower work roll 7 of the lower roll unit 11 can be replaced. Rails 15a, 15b whose length extends from the inside of the frame 6 to the outside of the leveler frame 6
The rails 15a are laid on the rails 15a, 15b of each of the lower roll units 1 to 11 so as to extend in a direction perpendicular to the sheet threading line, and the rails 15a are expanded and contracted by a push/pull cylinder 16 outside the leveler frame 6.

The roll holder 17 is mounted so that it can be run on the rails 15b and inserted into or pulled out from the leveler frame 6, and the rails 15a and 15b are located outside the leveler frame 6. A roll storage device 18 that stores a plurality of types of work rolls in an accessible manner is installed in an intermediate position. In addition, in Figure 1, 19
20 is a deflector roll, 20 is a priddle roll, and S is a plate material (strip).

More specifically, as shown in FIGS. 2 and 3, the roll holder 17 is equipped with, for example, an electromagnetic type attraction so that the lower work roll 7 in the lower roll unit 11 in the leveler frame 6 can be detachably attracted. A roll holder main body 21 having a tool 22 on the lower surface, and wheels 23a that can be moved on the rails 15a, 15b at the lower end in order to move the roll holder main body 21 along the rails 15a, 15b.

The structure 23b consists of support frames 24a and 24b whose upper ends are fixed to the roll holder main body 21, and the roll holder main body 21 is connected to the support frame 24a.

24b.

Further, the roll storage device 18 has rails 15a and 15b located outside the leveler frame 6, as shown in FIG.
An opening 2 for entering and exiting the lower work roll 7 is located between
A hollow cylindrical storage chamber 26 formed by cutting out a slit in the upper part of the storage chamber 26 is disposed, and the storage chamber 26 is supported by an elevating cylinder 33 so as to be able to be raised and lowered. A shaft 28 that rotates together with the shaft of a motor 27 installed on the side is inserted, and the shaft 2
8, there are multiple (12 in the figure) roll receiving grooves 2 on the outer periphery.
At least two turret plates 30 having grooves 9 recessed therein are fixed so that the roll receiving grooves 29 of each turret plate 30 are aligned, and each turret plate 30 is appropriately connected by a connecting member 31 for storage. The work rolls 7 can be stored between the inner wall of the chamber 26 and each roll receiving groove 29 of the turret plate 30. In addition, turret plate 3
Each roll receiving groove 29 of 0 is provided with a receiving seat 32 according to the diameter and shape of the work roll 7 to be stored, so that the work roll 7 does not wobble even when the turret plate 30 is rotated. .

In such a configuration, for example, if it becomes necessary to replace the lower work roll 7 depending on the shape of the plate material S, first, by shortening the main cylinder 14, the lower roll unit 11 together with the base 12 and jack 13 is replaced. is lowered so as to move the entire plate away from the sheet threading line. As a result, a space is formed between the lower roll unit 11 and the plate material S located above the lower roll unit 11. Next, the push/pull cylinder 16 is extended and the roll holder 17 is inserted into this space. In this case, when the push/pull cylinder 16 is extended, the roll holder 17 is moved so that the wheels 23a and 23b are connected to the rails 15.
a, 15b and is inserted into the leveler frame 6, as shown in FIG.
is positioned directly above the lower work roll 7. At this time, the contraction H of the main cylinder 14 is set so that a required gap is formed between the suction tool 22 and the lower work roll 7. In this way, the suction tool 2
2 is positioned directly above the lower work roll 7, when the lifting jack 13 is extended by the required amount, the lower roll unit 11 is raised and the gap between the lower work roll 7 and the suction tool 22 is eliminated. Therefore, lower work roll 7
is attracted to the suction tool 22 as shown by the two-dot chain line in FIG. After the lower work roll 7 is sucked by the suction tool 22, when the lifting jack 13 is shortened, the lower roll unit 11 descends leaving the lower work roll 7 behind, so a gap is formed at the bottom of the lower work roll 7. be done.

Thereafter, when the extended push/pull cylinder 16 is shortened, the lower work roll 7 is pulled out of the leveler frame 6 while being held by the roll holder 17, and as shown in FIG. It is carried to the upper position of 18. At this time, on the roll storage device 18 side, the corresponding empty roll receiving groove 29 of the turret plate 30 is positioned in the opening 25 of the storage chamber 26. By doing so, the lower work roll 7 carried by the movement of the roll holder 17 is positioned within the opening 25 and directly above the empty roll receiving groove 29. Next, when the lifting cylinder 33 is extended by the required amount, the entire storage chamber 26 is raised, and the roll receiving groove 29
The lower work roll 7 is fitted into the catch seat 32. Therefore, in this state, when the suction action of the suction tool 22 is released and the elevating cylinder 33 is shortened, the lower work roll 7 is received in the roll receiving groove 29.

Subsequently, the motor 27 is driven to rotate the turret plate 30, and the lower work roll 7 selected for replacement is moved to the position of the opening 25. Further, due to the rotation of the turret plate 30, the lower work roll 7 received from the roll holder 17 is moved into the storage chamber 26 and stored therein. When the selected lower work roll 7 is moved to the position of the opening 25, it is positioned directly below the suction tool 22, so by extending the lifting cylinder 33 again, the storage chamber 26 is raised and the lower work to be newly installed is moved. After the roll 7 is brought into contact with the suction tool 22 and the lower work roll 7 is adsorbed to the suction tool 22 by the suction action of the suction tool 22,
The elevating cylinder 33 is shortened to return the storage chamber 26 to its original position.

After the lower work roll 7 to be newly assembled is adsorbed by the suction tool 22, the lower work roll 7 is inserted into the leveler frame 6 and set into the lower roll unit 11 in the reverse procedure of the above-described drawing operation.

In the present invention, since only the lower work roll 7 is grasped and pulled out from within the leveler frame 6 or inserted into the leveler frame 6 as described above, the lower work roll 11 is completely removed from within the leveler frame 6. Since there is no need to replace the lower work roll 7 after pulling it out, the work roll can be replaced easily and quickly, and from this, the lower work roll 7 can be replaced frequently according to the shape of the plate material S. This makes it possible to correct the shape over a wide variety of ranges corresponding to the shape of the plate S, and the ability to straighten the plate S can be dramatically improved. Furthermore, the above operations include detecting the shape of the plate material S, pulling out the lower work roll 7, selecting the lower work roll to be replaced,
Everything up to the insertion of the selected lower work roll can be performed automatically under program control of the Zupete computer, eliminating the need for workers to intervene in the roll replacement work, contributing to labor savings.

In the above embodiment, an electromagnetic type suction device is used as the suction device 22 for suctioning and holding the lower work roll 7, but a vacuum suction type device may be used without departing from the gist of the invention. Of course, various changes can be made within the scope.

[Effects of the Invention] As described above, according to the work roll exchanging device for a tension leveler of the present invention, only the work roll can be exchanged easily and quickly without pulling other rolls out of the leveler frame at the same time. As a result, work rolls can be replaced frequently according to the shape of the plate material, so straightening work can be performed using the work roll most suitable for the shape of the plate material, dramatically increasing the ability to straighten the shape of the plate material. It is possible to achieve an excellent effect of improving the performance.

[Brief explanation of the drawing]

Fig. 1 is an overall view showing an example of a tension leveler employing the work roll changing device of the present invention, Fig. 2 is a side view showing an outline of the work roll changing device of the present invention, and Fig. 3 is a -■ Enlarged arrow view, Figure 4 is IV-IV of Figure 2
It is an enlarged arrow view corresponding to a line. 7... Lower work roll, 9... Backup roll, 11... Lower roll unit, 15a, 15b...
Rail, 16... Push/pull cylinder, 17... Roll holder, 18... Roll storage device, 25... Opening, 26... Storage chamber, 27... Motor, 29...
...Roll receiving groove.

Claims (1)

[Claims] 1) Inside the leveler frame in which the work roll unit having the work roll is installed, lay a rail extending in a direction perpendicular to the threading line with a length extending from the inside of the leveler frame to the outside of the leveler frame, and on the rail, the above-mentioned A roll holder that can detachably hold work rolls is movably mounted, and a plurality of types of work rolls are stored between the rails located outside the leveler frame. A work roll changing device for a tension leveler, comprising a roll storage device for transferring.