JPH06102223B2 - Tension leveler - Google Patents

Description

TECHNICAL FIELD The present invention relates to a tension leveler.

[Prior Art] Generally, a tension leveler is a combination of leveler rolls and deflector rolls arranged in a zigzag pattern, and a rolled material is passed between the rolls arranged in a zigzag pattern to allow a rolled material to undergo plastic bending with a required radius of curvature. Are alternately applied to correct the shape of the rolled material.

In a rolling line using such a tension leveler,
In order to eliminate the loss of work time due to passing of rolling material and slippage of the rolled material, the trailing edge of the preceding rolled material and the leading edge of the following rolled material are overlapped and joined, and the continuous rolled material is placed inside the leveler. Need to pass through. If the rolled material joint with the step and the step is overlapped and enters the leveler, it may collide with the leveler roll to cause roll scratches on the leveler roll, or there is a fear of damaging the bearing of the leveler roll. When passing through the leveler, the leveler roll and the deflector roll are opened in the vertical direction to separate each roll from the rolled material.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional tension leveler, when the joint portion of the rolled material passes through the leveler roll portion,
Since all of the leveler rolls and deflector rolls are opened to the roll exchange position where they are completely separated from the rolled material, there is no time loss until the rolled material is returned to the working position after the joint of the rolled material has passed. Has occurred.

In view of the above-mentioned circumstances, the present invention, when the joint portion of the rolled material passes, the block is an intermediate position between the working position and the roll exchange position, and the upper and lower deflector rolls contact the rolled material and the leveler rolls vertically and vertically. It is lowered to the position where it touches or separates, and it prevents the upper and lower leveler rolls from being quickly impacted by the joints of the rolled material, and the upper and lower deflector rolls slip between the rolled material and the rolled material to damage the rolled material. It is an object of the present invention to provide a tension leveler capable of preventing the above.

[Means for Solving Problems] The upper and lower leveler rolls and the upper and lower deflector rolls are appropriately combined and arranged in a zigzag pattern at a position between the two deflector rolls on the inlet side and the outlet side which are horizontally separated from each other. In this tension leveler, a block is arranged below the two deflector rolls on the inlet side and the outlet side so that it can be moved up and down, and the rod can be held at the extended position, the intermediate position, and the lowered position in the block, and the vertical direction. Connect a two-stage cylinder that extends to
A lower leveler roll and a deflector roll are attached to the block so as to be able to move up and down integrally, and at the extended position of the rod, the upper and lower leveler rolls and the upper and lower deflector rolls are pressed against the rolled material in a staggered manner, and the intermediate position of the rod. Then, the upper and lower deflector rolls come into contact with the rolled material lightly, and the upper and lower leveler rolls come into contact with or come off the rolled material, and at the rod lowering position, the upper and lower leveler rolls and the upper and lower deflector rolls are all separated from the rolled material. In addition, the lower leveler roll and the deflector roll are arranged with respect to the block. [Operation] Therefore, in the present invention, when the shape of the rolled material is corrected,
The rolled material is passed between the rolls which are combined in a zigzag pattern, and plastic bending having a required radius of curvature of the rolled material is applied.

When the rolls provided on the block are replaced, the rod of the cylinder is contracted to the lowest position to lower the block, and the rolls provided on the block are separated from the rolled material.

When the joint of the rolled material passes further, the rod of the cylinder is set at an intermediate position between the extended position and the contracted position, the block is slightly lowered, and the upper and lower deflector rolls provided on the block are quickly brought into contact with the rolled material. And the upper and lower leveler rolls are in contact with or away from the rolled material.

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

1 to 4 are explanatory views of an embodiment of the present invention.

A leveler 3 is arranged between the bridle roll 1 on the upstream side and the bridle roll 2 on the downstream side.

The leveler 3 has the following configuration. The lid-shaped upper frame 4 is attached to the frame 6 so as to be rotatable about the shaft 5 by 180 degrees. A rod 7 is attached to the bottom of the frame 6 in the vertical direction in the frame 6, and a two-stage cylinder 8 capable of holding the rod 7 in the extended position, the intermediate position, and the contracted position is attached.
A block 9 that vertically moves inside the frame 6 is stacked on the tip of the rod 7, and rolls 11 that roll along the inner surface of the column upper part of the frame 6 are provided at the four corners of the block 9 for guiding when the block 9 moves up and down. .

Deflector rolls 12 and 13 are provided above the frame 6 and upstream and downstream of the block 9. Lower leveler roll 1
4 and the lower deflector roll 16 as well as the lower leveler roll 18 bearings 23, 24, which hold the rolls 14, 16, 18 in order from the upstream side.
25 pieces are attached to brackets 20, 21, 22 provided on the block 9.

In addition, the upper leveler rolls are arranged in the middle of the rolls 14, 16 and 18 so that they are staggered with respect to the rolls 14, 16 and 18 provided on the block 9 when the rod 7 of the two-stage cylinder 8 is extended.
15 and the upper deflector roll 17 are arranged in order from the upstream side,
Upper frame 4 together with bearings 26 and 27 that hold both rolls 15 and 17
Install on.

At this time, at the intermediate position of the rod 7 of the two-stage cylinder 8, the rolled material 19 of the lower deflector roll 16 is connected to the line connecting the rolling material 19 contact portions of the deflector rolls 12 and 13 provided on the frame 6.
The arrangement of the lower deflector roll 16 is determined so that the contact portion is located above. The deflector roll having the arrangement
The upper and lower leveler rolls 14, 15, and 18 are rolled materials, while the rolled material 19 passes between the lower deflector rolls 16 and the lower deflector rolls 16.
The upper deflector roll 17 is arranged so as to be in contact with the rolled material 19 so as to be slightly separated from or in contact with the rolled material 19 (third part).
Figure quick open position).

Further, two deflector rolls 12, 13 provided on the frame 6
When the rod 7 of the two-stage cylinder 8 is extended on the basis of the line connecting the contact portions of the rolled material 19 of the above, the rolls 14, 16 and 18 on the block 9 are located above and the rod of the two-stage cylinder 8 is 7
Brackets 20, 21, 22 so that each roll 14, 16, 18 on the block 9 is located at the bottom when contracted to the lowest position.
Set the vertical length of.

Each leveler roll 14, 15, 18 has three backup rolls 31, 3 via two intermediate rolls 28, 29, 30 respectively.
Supports 2,33.

Further, the lower part of the block 9 has the block 9 at the time of roll replacement.
A roller 34 that moves in the width direction of the rolled material 19 is provided, and a guide rail 35 for the roller 34 that extends in the width direction of the rolled material 19 and moves the block 9 to the outside of the rolling line is provided in the lower portion inside the frame 6.

When straightening the shape of the rolled material 19, the rod 7 of the two-stage cylinder 8 is extended to raise the block 9, and the lower leveler roll 14, the upper leveler roll 15, and the lower deflector roll 1
6. Place the upper deflector roll 17 and the lower leveler roll 18 in a staggered work position (Fig. 2). When the rolled material 19 is passed from the upstream bridle roll 1 into the leveler 3, the rolled material 19
19 passes through each roll 12,14,15,16,17,18,13 of the leveler 3 in a zigzag manner and is given the required plastic bending to correct the shape, and then the rolled material 19 is located downstream from the leveler 3. It is sent to the downstream side via the bridle roll 2.

Furthermore, the shape of the rolled material 19 is continuously corrected, and the rear end of the preceding rolled material 19 and the trailing end of the following rolled material 19 are overlapped in order to eliminate the loss of work time due to repeated striping and slipping. They are also welded together and the rolled material 19 is joined (Fig. 5). In the shape correction work of the rolled material 19, when the step-like joint a of the rolled material 19 enters the inside of the leveler 3, the joint a is moved to the leveler 3.
Impact is applied to each roll inside, and this impact is the largest for the small-diameter upper and lower leveler rolls 15 and 14 which press the rolled material 19 in a zigzag pattern and alternately perform plastic bending with a small radius of curvature. Due to this impact, the upper and lower leveler rolls 15,1
4 causes scratches on the rolled material 19, and the bearings of the upper and lower leveler rolls 15 and 14 are damaged.
When entering, the rod 7 of the two-stage cylinder 8 is set to an intermediate position and the block 9 is set to a quick open position in which it is slightly lowered from the working position, and the upper and lower leveler rolls 14, 15, 18 are set.
Is slightly separated from or in contact with the rolled material 19, avoiding or mitigating impact due to passage of the joint a of the rolled material 19, and the upper and lower deflector rolls 16 and 17 in contact with the rolled material 19, Upper and lower deflector rolls 16,1
7 is driven by the rolled material 19 and rotated according to the traveling speed of the rolled material 19. After the joint a of the rolled material 19 has passed, the rod 7 of the two-stage cylinder 8 is extended and the block 9 is raised to bring the rolls 14, 15, 16, 17, 18 into the working position again.

Also, when replacing the rolls 14, 15, 16, 17, 18 above,
The rod 7 of the two-stage cylinder 8 is contracted to the lowermost position to lower the block 9, and the rolled material 19 contact portions of the lower leveler rolls 14 and 18 and the lower deflector roll 16 contact the deflector rolls 12 and 13 provided on the frame 6. Rolls 14, 1 at the roll replacement position (Fig. 4) below the line connecting the contact parts of rolled material 19
5,16,17,18 are separated from the rolled material 19. Next, the rollers 34 of the block 9 are guided by the guide rails 35 to pull out the block 9 in the width direction of the rolled material 19, and the upper frame 4 is rotated 180 degrees about the shaft 5, so that each roll 14, 15, 16 is rotated. , 17,18 appear outside and can be exchanged without obstruction.

The present invention is not limited to the above-mentioned embodiment,
It goes without saying that various changes can be made without departing from the scope of the present invention.

[Advantages of the Invention] As described above, according to the tension leveler of the present invention, the two-stage cylinder is provided, the lower leveler roll and the deflector roll are integrally liftably mounted, and the lower leveler roll and By devising the layout of the deflector rolls, it is possible to prevent damage to the leveler roll due to the joints of the rolled material, and to prevent damage to the rolled material due to slipping because the deflector roll is always in close contact with the rolled material and driven by the rolled material. The block can be moved to the position quickly and surely, and further, it is possible to achieve the excellent effects that the structure can be simplified and the malfunction and the operation delay can be prevented.

[Brief description of drawings]

FIG. 1 is an explanatory view of an embodiment of the present invention, FIG. 2 is an explanatory view of arrangement of a roll working position of FIG. 1, and FIG. 3 is an explanatory view of arrangement of a roll quick open position of FIG. FIG. 4 is an explanatory view of the arrangement of the roll exchange positions of the rolls of FIG. 1, and FIG. 5 is an explanatory view of the rolled material joining portion. In the figure, 6 is a frame, 8 is a two-stage cylinder, 9 is a block,
12, 13 are deflector rolls, 14 are lower leveler rolls, 15
Is an upper leveler roll, 16 is a lower deflector roll, 17 is an upper deflector roll, 18 is a lower leveler roll, and 19 is a rolled material.

Claims (1)

[Claims] 1. A tension leveler in which the upper and lower leveler rolls and the upper and lower deflector rolls are appropriately combined and arranged in a zigzag pattern at a position between the two deflector rolls on the inlet side and the outlet side which are horizontally separated from each other, A two-stage cylinder in which a block is arranged below the two deflector rolls on the inlet side and the outlet side so as to be able to move up and down, and the rod can be held at the extended position, the intermediate position, and the lowered position and which extends vertically. And to attach the lower leveler roll and the deflector roll to the block so that they can be integrally raised and lowered,
At the extended position of the rod, the upper and lower leveler rolls and the upper and lower deflector rolls are in pressure contact with the rolled material in a staggered manner, and at the intermediate position of the rod, the upper and lower deflector rolls are in light contact with the rolled material and the upper and lower leveler rolls are in contact with the rolled material. The lower leveler roll and the deflector roll are arranged with respect to the block so that the upper and lower leveler rolls and the upper and lower deflector rolls are all separated from the rolled material in the lowered position of the rod. Tension leveler.