JPS5913510A - Guiding device for introducing cooling fluid - Google Patents

Abstract

PURPOSE:To perform rolling in a balanced state of temperature throughout the whole length of a material to be rolled, and to improve the accuracy of roundness of a product and the yield of it, by forming a slit for jetting cooling fluid by arranging a receiving guide and a slit-forming part of a cone-guide oppositely and closely to each other, and also adjusting optionally the width of the slit. CONSTITUTION:When a screw-rear pinion 6 is turned by a pinion shaft 61 with the aid of an external force, a screw-gear wheel 7 is turned at a reduced speed around a screwed part 22 engaging with the wheel 7 by screw. At this time, a tubular sleeve 2 is fixed, and only the wheel 7 moves along the screwed part 22. And then, a cone-guide 4 connected in one body to a shifting disk 101 which is held by a shifter 9 between the shifter 9 and the wheel 7, is moved back and forth in its axial direction. Thus, because of such a driving mechanism, the width of an annular conical gap (t), which is formed by arranging a receiving guide 3 and the guide 4 oppositely to each other, is steplessly adjusted, without the change of their positions caused by an external force acting from the side of the guide 4.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a guiding device having a cooling function for controlling the temperature of a rolled material during rolling of steel materials.

Conventionally, various cooling devices have been known for controlling the temperature of a rolled material during hot rolling, such as Japanese Patent Publication No. 42-15450 or Japanese Patent Publication No. 56-37001.

In particular, in this type of cooling device that has an annular cylindrical gap (ring slit), the volume of the gap is fixed, so the flow rate must be adjusted only by adjusting the pressure of the cooling fluid. Flow rate accuracy varies,
In order to prevent the inconvenience of instability or to adjust the balance between this pressure and the flow velocity, in other words, as a means to vary the gap formation volume, variable adjustment such as shim adjustment, screw rotation adjustment, cam adjustment, etc. Fixed method machine 1%! (loosening the fixing, making variable adjustments, and then fixing again) is used, but these operations often have the inconvenience of requiring repeated readjustments while interrupting the rolling operation, as well as the adjustment accuracy and cooling. It also had the disadvantage of poor flow rate control accuracy.

The great invention was to quickly change the coolant flow rate in response to the temperature of the rolled material, making it possible to accurately control the temperature within the rolling line. In addition to being able to adjust it arbitrarily, in continuous rolling performed with multiple rolling mills, by providing it in the middle of rolling, it is possible to perform nine rolling operations while controlling the temperature of the rolled material.
Condominated rolling is also possible. In addition, by controlling the coolant flow rate with high precision and quickly, it is possible to respond to intermittent temperature imbalances in the length direction of the rolled material and perform temperature-balanced rolling over the entire length of the rolled material. This improves roundness accuracy and yield/quality.

Next, the configuration of the great invention will be explained in detail with reference to the drawings.

FIG. 1 is a cross-sectional view showing the structure of the present invention, in which numeral 1 represents a guide box that houses a rolling material guiding device, and numeral 2 represents a drive mechanism that is installed in the guide box 1. FIG. 2 is a sectional view taken along line A- in FIG. 1. That is, the rolled nibbler sleeve (hollow shaft) 2 is inserted,
A receiving guide (fixed guide) 3 and a cone guide (
Movable guides) 4 are installed with their axes facing each other in series.
A triple-axis VC is constructed. Therefore, in this triple configuration, the fluid-filled chamber 11 (A
A fluid pressure equalizing chamber 21 (flat 2 jacket) is provided on the inner surface of the tubular sleeve (hollow shaft) 2 and γAf at the upper part of the guide box 1, and is filled with cooling fluid supplied from the body inlet 13. A double flow chamber for pressure maintenance and pressure equalization maintenance and distribution is formed to obtain an even annular umbrella-shaped fluid injection layer for the rolled strip. Receiving guide (fixed guide) 3σ)
One rear end is provided so as to be inscribed in the caliber immediately after the exit of the rolling roll, and has an introduction tip structure for inserting the receiver while preventing misrolls such as the ejection of the extended rolled strip. The exit side (in the forward direction of the material) is formed into an annular conical inner surface, and has a slit forming portion 31 for forming a slit t through which the coolant fluid is jetted out. This guide is fixed immovably by a tubular sleeve (hollow shaft 2 and set screw 15) in a suitable position close to the roll.A cone guide (movable guide) 4 is located at the rear end (receiving side of the rolled material). It has a slint forming part 41 formed in the shape of a truncated conical outer surface, and is arranged in rows K iM on the same axis as the receiving guide (fixed guide) 3 and the pass lines P and L. It is mounted movably in the axial direction within the tubular sleeve 2. Therefore.

By bringing the facing slit forming portions 31, 41 of both the receiving guide 3 and the cone guide 40 close to each other, an annular conical gap portion, that is, a slit t is formed, and constitutes a coolant fluid injection port for one rolled material.

Next - the drive for moving the cone guide 4! *5
Let's talk about. FIGS. 1 and 2 show an example of this. First, a cone guide (movable guide) 4 inserted into a tubular sleeve (hollow shaft) 2 is rotated in the rotating direction using an implant key 8. fix the rotation of and σ in the axial direction)
Combine to enable movement. A threaded portion 22 is formed on the outer periphery of one end of the strip exit side of the tubular sleeve (hollow shaft) 2, and is screwed into the threaded portion 22 of the threaded gear wheel 7. A threaded gear pinion 6 that meshes with this threaded gear wheel is integrally formed with the guide box 1. The pinion shaft 61 is attached to the pinion bracket 12 so that the pinion shaft 61 can freely rotate and is prevented from being reversed due to external force from the shaft side. Shift desk 1 is installed at the end of the cone guide (movable guide) 4 on the strip material exit side.
A shift ring 10 integrated with 01 is integrally attached with bolts 91, and its outer peripheral portion σ) is sandwiched between the (l11 surface of the screw gear wheel 7 and the inner surface of the shifter 9), The shifter 9 is fixed with bolts 92 to a degree of fit that does not hinder rotational sliding, and the screw gear wheel 7 is coupled so as to be integrally rotatable.

In the drive mechanism configured in this manner, when the pinion shaft 61 is rotated by an appropriate external force and the screw gear pinion 6 is rotated from side to side, the engaged screw gear wheel 7 moves around the screw portion 22. Rotate at a reduced speed.

At this time, since the tubular sleeve (hollow shaft) 2 is fixed and immovable, only the threaded gear wheel 7 moves by screwing the threaded part 22, and is integrally moved from the shift desk 101 clamped by the shifter 9. The cone guide (movable guide) 4 coupled to the cone guide 4 is moved only back and forth in the axial direction via the linear guide of the implanted key 8. With such a drive mechanism, the position can be stably set without changing the position due to external force from the guide side. In this way, the width or volume of the annular valve seat-shaped annular cone gap (ring cone slit) t formed by the receiving guide (fixed guide) 3 and cone guide (movable guide) 4 facing each other can be adjusted steplessly. Since the valve seat is variable, the minute flow rate of the cooling fluid passing through the annular conical valve seat can be precisely controlled arbitrarily with one-touch operation.

Next, another example in which the configuration of the drive mechanism is different will be described.

FIG. 3 is a sectional view showing another configuration example of the present invention, and FIG. 4 is a sectional view taken along the line B--B in FIG.

The basic functions of the receiving guide 3 and the cone guide 4 are the same as in the example shown in FIG.

Identical symbols represent the same function. A rack key sliding groove 52 is provided above the front inner surface of the hollow shaft 2 in the longitudinal direction of the shaft. Rack teeth 55 are provided on the upper outer circumference of the front part of the movable guide 4 in the longitudinal direction of the shaft.
The rack key 51 having the tf is fitted and fixed, and the hollow shaft 2Vc rack key 51 is fitted to provide double shaft mounting. The movable guide 4 is fixed in rotation in the circumferential direction by a rack key 51 and restricted in its movement so as to be slidable only in the axial direction. A set of screw gear reduction mechanisms are mounted on the front upper part of the hollow shaft 2 and mesh with the rack keys 51 to transmit the reciprocating motion of the movable guide 4.

The screw gear reduction mechanism includes a pair of screw gear binions 6 and gear wheels 53 whose shaft angles are set at right angles, and which are housed in a gear casing 71 through a pinion shaft 61 and a wheel shaft 71, respectively, and are housed in a gear casing 71 for fine reduction adjustment. It is configured with both a reverse rotation prevention function and a reverse rotation prevention function. A cutout hole 56 is provided above the rack key sliding groove 52 of the hollow shaft 2, through which the outer periphery of the mounted screw gear wheel 7 is inserted in a half-moon shape and meshed with the rack teeth 55 of the rack key 51. This constitutes a gear reduction rack sliding mechanism in the longitudinal direction of the axis of the movable guide 4. A bearing groove 104' is provided in the lower part of the inner surface of the hollow shaft 2 to accommodate a flat cage roller bearing 104, and the lower part of the movable guide 4 is movably brought into contact therewith. This function is to reduce sliding friction by receiving the downward deflection load Xtt roller bearing 104 when the screw correction wheel 53 and the rack key 51 mesh and slide when the screw gear reduction mechanism is operated. The rack key sliding part 152 and the bearing groove 114'
In order to maintain the function of the sliding part for a long period of time, a sealing cover 103 is attached to the circumference of the front end face of the hollow shaft 2. Furthermore, internal O-ring 1
05 and the sealing effect of the sealing O-ring 106 on the other side fitting circumferential portion prevents scale and cooling fluid from entering from the outside. The fixed guide 3 is provided with a slit forming part 31 at its front end, and the movable guide 4 is provided with a slit forming part 41 at its front end. Although the drive mechanism illustrated in FIG. 3 is different from the drive mechanism illustrated in FIGS. 1 and 2, the function of ejecting and regulating the amount of coolant fluid is identical in both. The same purpose is achieved except that the direction of injection of the coolant fluid and the operating speed of the cone guide (movable guide) 4 are different. The adjustment of the slit t is performed by rotating the pinion shaft 61 using an appropriate external force. That is, by rotating the screw tooth claw pinion 6, the gear wheel 53 rotates, and the rotational force is
Vc is transmitted, and the cone guide 4 formed integrally with the rack key moves in the same direction as the pass line (P, L). In this case, the amount of movement is.

Since the amount of tooth feeding by the screw gear pinion directly becomes the amount of movement of the cone guide 4, the movement of the cone guide is extremely rapid.

As described above, by the movement of the cone guide (movable guide) 4, an annular cylindrical gap (slin) 1 is formed by the slit forming portions 31 and 41 provided between the opposing portions of the receiving guide (fixed guide) 3. The degree of the gap, that is, the width, can be set as desired. When comparing the movement performance, that is, the operating speed, of the cone guide (movable guide) 4 by the above-mentioned drive mechanism (illustrated in FIGS. 1 and 2) and the above-mentioned drive machine 1i (illustrated in FIG. 3), the latter (illustrated in 8g3) is found. σ)
The mechanism features easy one-touch operation and rapid movement performance. In any of the above two mechanisms, the adjustment of the slit width t and the setting control operation of the cooling fluid can be performed at any time, and the setting value and state are determined by the jetting pressure of the cooling fluid, the frictional force of the passing of the rolled material, etc. Stable flow control can be performed by maintaining an immovable slit width t without any fluctuation due to other external forces.

Since the present invention is constructed as described above, the cooling fluid supplied from the cooling fluid port 13 at the upper part of the single-width box 1 first fills the fluid-filled chamber 11, maintains a high pressure, and then flows through the tubular sleeve. The fluid flows into the next pressure equalization chamber 21 through the flow path 14 (small holes provided at several places around the circumference) provided in the (hollow shaft) 2 and is filled with equal pressure. Cooling water forming an annular uniform jet stream is intensively jetted toward the center of the pass line from preset slits. If the rolled material passes through the center of these guides, it will be cooled at a cooling degree that depends on the injected cooling water. A large number of this device can be installed in a rolling line. If the temperature of the rolled material is to be adjusted, the cone guide is moved by the operation described above to adjust the slit width and control the amount of cooling water jetted out.

According to the present invention, this control is extremely easy and accurate, and can be performed without interrupting rolling. Furthermore, since the slit t can be closed off, the range of cooling control of the rolled material is extremely wide. This shows that it is possible to efficiently carry out chondral rolling by uniformizing the temperature of the rolled material and appropriate cooling, or low-temperature rolling to improve the structure, and is extremely useful in industry. 1 is a rolling roll, 112 is a rolled strip, and t is an annular cylindrical gap (ring slit). / indicates the distance between the conical surfaces, P indicates the annular umbrella-shaped jet concentration point, and Q indicates the apex angle of the annular cone.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. M1 is a sectional view showing the configuration of the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. The sectional view shown in FIG. 4 is a sectional view taken along the line BB in FIG. 3. 306. Receiving guide, 4. ,, Cone Guide, 581. Drive mechanism, 31.41. ,, Slit forming part. Patent applicant Kotobuki Sangyo Co., Ltd.

Claims (1)

[Claims] a receiving guide having a slit forming part at a curved end for guiding the rolled material; and a receiving guide disposed in series with the receiving guide.
It consists of a cone guide that can move the coaxial liner and has a slit forming part at the rear end, and a drive mechanism that has a reversal prevention function that moves and sets the cone guide to an arbitrary position by external force, and the receiving guide The slit forming part and the slit forming part of the cone guide are placed opposite to each other so that coolant fluid is ejected onto the rolled material. A cooling guidance device characterized by having a 5VC configuration to control the amount of fluid injection.