JPH02104414A - Rotating billet type cooling bed - Google Patents

Abstract

PURPOSE:To perform an effective cooling work by providing a moving rake plate capable of normal and reverse rotatings for a fixed rake plate and making the starting position at the normal and reverse rotation possible to be controlled, and making a supporting groove of each billet of both plates to be symmetrically shaped grooved in transferring front and rear directions. CONSTITUTION:The billet support mechanism on the fixed rake plate 1 to stop the fixed position, and on the other hand, the moving rake plate 2 to perform a closed locus motion in the vertical plane such as a vertical lifting and right and left traverse, etc., are provided. Because, both billet support grooves 1a, 2a for respective billet rotating and transferring are made into symmetrical shaped grooves in the front and rear transferring direction, the billet is successively transferred and cooled while rotating from inlet side of the cooling bed toward the outlet side. The repeated rotating cooling of the normal and reverse rotatings to stop once when the billet reaches at the outlet side to transfer while rotating toward the inlet side and to perform cooling is enabled. By this method, using middle or small type compact cooling bed installation, effective and economical cooling work is performed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to improvements in billet rotary cooling beds used in rolling equipment, continuous casting equipment, etc.

(Prior art) A required number of fixed rake plates and movable rake plates each having billet support grooves arranged in rows in the longitudinal direction of the plates are combined and arranged in parallel to each other, and the fixed rake plate is connected to the movable rake plate. The billet on the billet support groove of the fixed rake plate is rotated and transferred onto the billet support groove in front by performing closed locus movements in the vertical plane, such as vertical lifting and horizontal movement. Needless to say, billet rotating cooling beds for cooling during this period are well known, and one of them is disclosed, for example, in Japanese Utility Model Application Publication No. 61-10407. What is disclosed in the same publication is such a rotary cooling bed that is provided with a billet rotating part and a non-rotating part, and rotating the billet at this time prevents warping and bending due to the difference in temperature between the top and bottom. This is to prevent warping or bending by supporting the billet in a V-shaped support groove even in the non-rotating part.

(Problems to be Solved by the Invention) The conventional cooling bed described above was originally designed based on the condition that billets are supplied continuously and indefinitely, and the billet transport direction is determined by the direction of the cooling bed. Transport is limited to one direction from the population side to the exit side, and for mass processing and effective cooling, it is essential to increase the size of the cooling bed, and the length of the cooling bed must also be extremely long. On the other hand, there is a need for such a cooling bed that can cope with the conditions where a limited number of billets are intermittently supplied, as seen in high-mix, low-volume production. For such limited numbers and intermittent supply conditions, using conventional large-scale cooling bed equipment is disadvantageous both in terms of efficiency and economy. For example, using compact cooling bed equipment with a short length, It would be advantageous if the cooling time could be gained by repeating normal rotation and reverse transfer from the inlet side to the outlet side and from the outlet side to the inlet side.

However, with conventional cooling beds, including the one disclosed in the above-mentioned publication, such reciprocating rotational cooling by forward and reverse rotation is not possible. That is, as is clear from the structure of the rotating part disclosed in the above publication, the shapes of the billet support grooves arranged in rows on the upper surfaces of the fixed rake plate and the movable rake plate are both asymmetrical in the transport direction. Due to the asymmetric groove shape, which is a combination of sloped surfaces with different angles and lengths, rotational cooling in one direction is possible, but even if the rotation is reversed, the billet cannot be given the same rotational action. This is because it is impossible.

(Means for Solving the Problem) Therefore, in the present invention, each billet support groove for performing rotational cooling in the fixed rake plate and the movable rake plate is configured to have a symmetrical groove shape in the front and back of the transfer direction. This allows the same rotating motion to be given to the billet no matter which side it is operated from. Specifically, it consists of a fixed rake plate with billet support grooves arranged in a row along the length of the plate and a movable rake plate. A required number of rake plates are arranged in parallel with each other, and the billet on the billet support groove of the fixed rake plate is rotated through closed locus movement of the movable rake plate in a vertical plane with respect to the fixed rake plate. In a device in which the billet is transferred and cooled by being transferred onto the support groove in front of the billet, each of the billet support grooves of both plates has a groove shape that is symmetrical in the front and back of the billet transfer direction, and the movable rake plate is connected to the fixed rake plate. It is provided so that it can be rotated forward and backward relative to the plate, and its position can be adjusted when starting forward and reverse rotation.

(Function) According to the above-mentioned technical means of the present invention, the billet supporting groove in the fixed rake plate stays at a fixed position, and the billet supporting groove in the fixed rake plate moves in a closed trajectory in a vertical plane, such as vertically moving up and down, as well as horizontally traversing. Both billet support grooves for billet rotation and transfer in the rake plate are grooves with symmetrical shapes in the front and back of the transfer direction, so billets can be transferred sequentially from the cooling bed inlet side to the outlet side while rotating. The billet is cooled once it reaches the outlet side, and then the billet is transferred while rotating from the outlet side toward the population side, and the billet is cooled. Repeated rotational cooling of forward and reverse rotation is easy. Furthermore, by making it possible to adjust the position at the start of forward and reverse rotation, the same rotational transfer operation can be controlled without mistakes, thereby eliminating the need for a large cooling bed as in the past. The above-mentioned finite number and intermittent supply conditions can be handled efficiently and economically using compact cooling bed equipment.

(Example) A suitable example of the billet rotating cooling bed according to the present invention will be described with reference to FIGS. 1 to 3.

In Fig. 1, the fixed rake play has billet support grooves 1a arranged at regular pitches, each having an opening angle of 90° or more in the longitudinal direction and having symmetrical V-shaped grooves in the front and back of the billet transport direction. On the other hand, the movable rake plate 2 similarly has billet support grooves 2a formed of symmetrical inverted trapezoidal grooves arranged at a fixed pitch in the front and back of the billet transport direction over its longitudinal direction. The required number of fixed rake plates 2 and movable rake plates 2 are arranged parallel to each other at appropriate intervals as is known, but in the embodiment, as shown in Fig. 1.2. The fixed rake plate 1 is fixedly held at both ends by the brackets 33 on a fixed base 3 consisting of a base frame 31, a column 32 erected on the base frame 31, and a bracket 33 provided at the upper end of the column 32. It is fixed by being fixed. On the other hand, the movable rake plate 2 extends over the brackets 42 of the traversing platform 4, which is composed of a frame 41 mounted on the elevating platform 6 via wheels 43 so as to be traversable, and brackets 42 arranged in rows on the frame. The structure is then constructed and maintained.

The above-mentioned elevating platform 6 has elevating links 54.54 pivotally connected on both sides in the longitudinal direction, one end of which is pivotally connected to both links 54,54, and movably supported by a support shaft 55 of a bearing 56. Swinging lever 53.53, both swinging levers 5
3. In order to operate the levers 53 synchronously, a tie rod 52 that commonly connects the other ends of both levers 53 and 53;
Drive a51 of cylinders, motors, etc. for advancing and retracting 2
, is connected to an elevating drive mechanism 5 consisting of a bracket 57 that supports the drive source 51, so that it can be moved up and down.

In order to enable the traversing table 4 to traverse left and right (front and back in the transport direction) in the drawing, in the embodiment, cylinders, motors, etc. are installed on a bracket 72 that is slidably attached to a guide 73 fixed to the elevating table 6. A traverse drive mechanism 7 consisting of a forward/backward drive source 71 is installed, and the drive source 71 is connected to one end of the traverse table 4, thereby making it possible to move backward and forward. In addition, in order to enable alignment of both rake plates 1.2 at the start of forward and reverse rotation, a transverse table position adjustment mechanism consisting of a drive source 81 for adjustment such as a cylinder or motor, and an installation bracket 82 at the end of the lifting table 6 8, and the adjustment drive source 81
is connected to one end of the bracket 72 of the traverse drive mechanism 7.

In the embodiment, the closed trajectory movement of the movable rake plate 2 in the vertical plane with respect to the fixed rake plate 1 is as shown in FIG.
Although one cycle is shown as → descending → traversing (retreating), it is of course not limited to this, and the illustrated elevating and descending mechanisms and traversing mechanisms are not limited to only rotating. Needless to say, it can be freely designed.

According to the embodiment described above, the movable rake plate 2 moves from vertically upward to horizontally (
As shown in Fig. 3, the symmetrical billet support grooves 1a and 2a rotate and cool the billet through forward rotation and reverse rotation due to the movement of the closed locus A in which one cycle is forward movement → descent → traverse movement (backward movement). can be easily done. In the figure, reference numeral 10 indicates a billet having a square prism cross-sectional shape, and in the same figure, billet transfer from right to left in the figure is described as forward rotation, and conversely, billet transfer from left to right in the figure is described as reverse rotation. do.

As shown by the arrow (positive) from right to left in the figure, when transferring the billet 10 in the normal direction, the moving rake plate 2
After aligning the origin 02 of normal rotation with the origin O of the fixed rake plate 1, the lifting platform 6 in FIG.
The movable rake plate 2 moves in the same direction due to the movement of the rake plate 2 according to a closed locus A in which one cycle is ascent → traverse (forward) → descend → traverse (retreat). From Figure (2-1), the following (2
-8), the fixed rake plate 1
The billet 10 in the billet support groove la is shown in the same figure (10
-1), the billet supporting groove 1a is lifted from the inside of the billet support groove 1a, and by descending the traverse forward movement rake 2 by the traverse stroke L, the billet in the front billet support groove 1a It is transferred while rotating inside the groove, and is supported by sliding down into the same groove.
A rotation of 90 degrees is obtained from (10-1) to (10-8) in the figure. Therefore, by repeating this transfer movement three times, one rotational movement of the billet 10 can be obtained.

In contrast to the normal rotation described above, when the billet 10 is transferred in the reverse direction from left to right in the same figure, as shown by the arrow (reverse), when the billet 10 completes one rotation, the moving rake plate 2
The origin 0□ at the time of reverse rotation is made to coincide with the origin O2 on the corresponding fixed rake plate 1 side, and this requires a stroke as shown in the figure! It is necessary to adjust the position of the Therefore, as shown in FIG. 1, in the traversing table 4, the bracket 72 that supports the drive 'a71 in the traversing drive mechanism 7 and is slidably held on the guide 73 side is installed on the lifting table 6 side. By moving the adjustment drive source 81 of the transverse table position adjustment mechanism 8 by the stroke l, the origins O1 and Ol are made to coincide, and then the movable rake plate 2 is moved from ascending to traversing by the elevating table 6 and the transverse table 4 ( By similarly applying the motion of the closed locus A of (reverse advance) → descent → traverse (reverse reverse), each billet support groove 18.2a in the fixed rake plate 1 and the movable rake plate 2 is both symmetrical in the forward and backward transfer direction. Because of the groove shape, it is clear that the billet 10 in the billet support groove 1a of the fixed rake plate 1 can be similarly rotated and transferred in the opposite direction to that shown in the figure.
Both forward and reverse rotations are easily possible. In the case of reversal, a 90'' rotation is obtained by the above-mentioned l-cycle motion, and one rotation of the billet 10 is obtained by repeating this three times. It shows the same condition as the billet position.

As explained with the rotation locus shown in FIG. 3, in the present invention, each of the billet support grooves 18.2a of the fixed and movable rake plate 1.2 has a groove shape that is symmetrical in the forward and backward directions of transfer. This makes it possible to achieve normal rotation and reverse rotation in the cooling bed. For example, in Figure 1, if the right side is the cooling bed inlet side and the left side is the cooling bed outlet side, the billet 10 carried in can be The billet is cooled while being rotated and transferred from the side to the exit side, and when the billet reaches the support groove la of the final fixed rake play on the exit side, it is stopped once and the origin is aligned. Now, it is possible to obtain rotational transfer and cooling of the billet 10 from the outlet side to the inlet side, and by repeating this, cooling of a finite number of billets can be performed efficiently and with compact and economical equipment. be.

In carrying out the present invention, the content of the motion of the closed locus A, the traversing table 4, the elevating table 6, and their drive mechanisms for obtaining the same are not limited to only rotation, but may also include rotation, forward/backward driving, etc. As a power source, cylinders, motors, etc. can be used freely.

(Effects of the Invention) According to the present invention, each of the billet support grooves of both the fixed rake plate and the movable rake plate each having a support groove has a groove shape that is symmetrical in the front and back of the billet transfer direction, and the movable rake plate Since the billet can be rotated forward and backward relative to a fixed rake plate, and its position can be adjusted at the time of forward and reverse start, it can be used as a cooling bed facility because the reciprocating rotary transfer of billets and their cooling are carried out on the same cooling bed. It is superior in that it enables efficient and economical cooling work using compact medium- to small-sized cooling bed equipment without relying on conventional large-scale equipment.According to trial calculations, it is superior to conventional large-scale cooling bed equipment. On the other hand, it is possible to realize it at a low cost of I/10 or less, and it has great utility value as it can quickly respond to the condition where a limited number of billets are intermittently supplied.

[Brief explanation of the drawing]

Fig. 1 is a vertical sectional front view of the main parts of the cooling bed of the present invention, Fig. 2 is a plan view of the entire cooling bed showing the arrangement of each part, and Fig. 3 is an explanatory diagram of the locus of motion during normal rotation and reverse rotation in the cooling bed. be. ■...Fixed rake plate, 2...Moving rake plate, la, 2a...Billet support groove, 3...Fixed base, 4...Traversing base, 5...Elevating drive mechanism, 6...・・・
Lifting table, 7... Traversing drive mechanism, 8... Traversing table position adjustment mechanism, 10... Billet. Patent applicant Kobe Steel, Ltd. procedural amendment (voluntary) January 19, 1999

Claims (1)

[Claims] (1) The required number of fixed rake plates and movable rake plates each having billet support grooves arranged in rows in the longitudinal direction of the plates are arranged in parallel to each other, and the movable rake plates are arranged in a plane perpendicular to the fixed rake plate. The billet on the billet support groove of the fixed rake plate is transferred and cooled by transferring it to the support groove in front of the stationary rake plate while rotating, through closed locus motion at the plate, wherein each billet support groove of both plates is transferred and cooled. , both of which have symmetrical groove shapes in the front and back of the billet transfer direction, and are characterized in that the movable rake plate is provided so that it can rotate forward and reverse relative to the fixed rake plate, and its position at the time of forward and reverse starts can be adjusted. type cooling bed.