JPS6235009Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a steel strip cooling device using a cooling roll method.

BACKGROUND ART Cooling devices using cooling rolls are used in continuous annealing equipment for steel strips. As shown in Fig. 1, this cooling device is equipped with several cooling rolls B and the steel strip S is passed between them, and the contact between each cooling roll B and the steel strip S is The length can be changed by moving each roll up or down. However, with this method of changing the contact length with the steel strip by moving the rolls up and down, the length of the portion of the steel strip that does not contact the rolls between the rolls increases, causing uneven cooling of the steel strip in that portion. The problem is that it is easy. In addition, with this method, the cooling rolls are arranged continuously in the horizontal direction, and a large space is required to move them up and down, and the stroke for moving the rolls up and down requires approximately 1/2 of the roll diameter. Therefore, there are also drawbacks such as the need for a flexible gas sealing mechanism made of large fabric.

The present invention aims to eliminate these conventional difficulties and provide a device that can be installed in a small space and can cool steel strips without causing uneven cooling. A pair of cooling rolls are arranged in parallel at a predetermined interval and rotatably supported by a holding member, and the holding member is configured to be rotatable around a central portion between the pair of cooling rolls. By passing a steel strip between a pair of cooling rolls, rotating the cooling roll through a holding member, and holding it in an arbitrary state, a desired length of contact between the steel strip and the cooling roll can be obtained. It was meant to be a warning.

Embodiments of the present invention will be described below based on the drawings.

FIG. 2 shows the basic configuration of the present invention.
A ₁ and A ₂ are a pair of cooling rolls, and the cooling rolls A ₁ and A ₂ are rotatably supported on the holding member 1 so as to be parallel to each other at a predetermined interval. The holding member 1 is configured to be rotatable around a central portion a between the pair of cooling roll shafts.

3 and 4 show a more specific embodiment based on the basic configuration shown in FIG. 2, and 2 is a cooling chamber (cooling box).

There are circular window holes 3 in the walls on both sides of the cooling chamber 2.
a and 3b are formed, and a disk-shaped holding member 1 is rotatably attached to each window hole 3 so as to close the window hole 3. That is, a groove 4 is formed at the periphery of the window hole 3, and a disc-shaped holding member 1
is attached to the window hole 3 with its peripheral edge fitted into the groove 4. The holding member 1 closes the window hole 3 and can be rotated while being guided by the groove 4. Note that it is preferable to provide a seal between the holding member 1 and the wall to make the room airtight.

A pair of cooling rolls A ₁ and A ₂ (generally water-cooled rolls) are arranged in the cooling chamber, and these rolls are arranged in parallel at a predetermined interval and rotatably attached to the holding members 1a and 1b. It is pivoted. Both rolls are attached symmetrically to the respective centers of disk-shaped holding members 1a and 1b.

As a drive mechanism 5 for rotating the holding members 1a and 1b, an arc-shaped rack body 6 is attached to the lower part of one of the holding members 1a, and a pinion 7 that meshes with the rack body 6 is attached to the wall side. A motor 8 for rotationally driving the pinion 7 is provided. Then, the pinion 7 is connected to the motor 8 via the sprocket wheels 9, 10 and the chain 11.
By rotating the holding member 1, the holding member 1 can be rotated. In addition, although this drive mechanism 5 is attached to only one holding member 1a in this embodiment, it is attached to both holding members 1a and 1b.
It is possible to configure both drive mechanisms to operate synchronously. In another embodiment, both the holding members 1a and 1b may be integrally connected through a cooling chamber, and one of the holding members 1a may be provided with a drive mechanism.

Further, as a mechanism for rotationally driving each cooling roll A, a rotational drive motor 12 corresponding to each cooling roll is provided on the outside of the holding member 1a. It is designed to rotate. Further, the mechanism for supplying refrigerant to each cooling roll A is almost the same as the conventional one, and a refrigerant supply pipe is connected via a universal joint 17 to the shaft portion 16 of the roll in which a flow path for refrigerant distribution is formed. 18 are connected. Note that the supply pipe 18 is constructed of a flexible pipe at a predetermined length.

The attachment structure of the holding member 1 to the window hole 3 may be such that the peripheral edge of the holding member 1 is simply fitted into the groove 4, but, for example, as shown in FIG. It is also possible to adopt a structure that facilitates operation. That is, the roller members 1 are placed at multiple locations in the circumferential direction within the groove portion 4 formed on the wall side.
9 are rotatably provided, and the holding member 1 is installed in the groove portion 4 so as to be in contact with these roller members 19,
Furthermore, a seal member 20 in the circumferential direction is provided between the inner surface of the groove on the upper part of the roller member 19 and the holding member 1.

In addition, as another embodiment for rotating the holding member 1, there is a structure in which a shaft body is provided at the center of the holding member 1, that is, at the center between a pair of cooling roll shaft supports, and this shaft body is rotated by a drive mechanism. It can be done.

In the device described above, the driving mechanism 5 rotates the holding members 1a, 1b to rotate the pair of cooling rolls A ₁ , A ₂ , and holds the cooling rolls A 1 , A ₂ at an appropriate position. ₂ and any desired contact length between the steel strip and the steel strip can be obtained. Now, when the holding member is rotated from the state shown by the chain line in Fig. 6 to the state shown by the solid line, a contact length between the roll and the steel strip S corresponding to the angle α is obtained for each roll, and the holding member is further rotated in the direction of the arrow. By doing so, a longer contact length can be obtained. Then, by adjusting the contact length in this manner, the coolant is caused to flow through the cooling rolls A ₁ and A ₂ to cool the steel strip. Here, in the device of the present invention, the contact length is adjusted by rotating a pair of cooling rolls whose distance is always constant, so the length of the steel strip portion between the rolls that does not contact the rolls is always kept small. Can be both cooling rolls A ₁ , A ₂
Accordingly, the steel strip S can be cooled continuously without any time interval. Furthermore, this method has the advantage of requiring less space for rotating the cooling roll.

Incidentally, a plurality of devices of the present invention as described above are generally provided in the line direction to cool the steel strip.

According to the device of the present invention described above, the pair of cooling rolls A ₁ and A ₂ are rotatably supported on the holding member 1 in parallel at a predetermined interval, and the holding member 1 is connected to the cooling rolls A 1 and A 2 of the above-mentioned pair. The steel strip is configured to be rotatable around the central part between the roll shaft supports, and by rotating the pair of cooling rolls A ₁ and A ₂ and holding them in an arbitrary state, the contact length of the steel strip with the cooling roll can be adjusted to any desired length. Since the structure is such that the steel strip does not come in contact with the rolls between the rolls, the length of the steel strip that does not come into contact with the rolls can be kept small, and uneven cooling of the steel strip that occurs between the two cooling rolls can be reduced. Moreover, since the cooling rolls are not arranged horizontally or moved up and down, the space within the cooling chamber can be reduced, which has advantages not found in the past.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conventional cooling device.
FIG. 2 is an explanatory diagram showing the basic configuration of the device of the present invention. FIGS. 3 and 4 show an embodiment of the present invention, with FIG. 3 being a side view and FIG. 4 being a central vertical sectional view. FIG. 5 is a sectional view showing another embodiment of the mounting structure for the holding member. FIG. 6 is an explanatory diagram showing how the device of the present invention is used. In the figure, 1, 1a, 1b are holding members,
A ₁ and A ₂ indicate cooling rolls.

Claims (1)

[Scope of utility model registration request] A pair of cooling rolls are arranged in parallel at a predetermined interval and rotatably supported by a holding member, and the holding member is configured to be rotatable about a central portion between the pair of cooling rolls. Steel strip cooling system.