JP2500393Y2 - Narrow face width changing device for continuous casting machine - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a narrow surface width changing device in a mold for a continuous casting machine, and more specifically, in a mold in which a pair of narrow surface copper walls are sandwiched between a pair of wide surface copper walls to form a double cross. The present invention relates to a device for moving a narrow copper wall to change the width of a slab.

[0002]

2. Description of the Related Art Conventionally, as a narrow surface width changing device for a mold for a continuous casting machine, for example, Japanese Utility Model Publication No. 54-9108 and Japanese Patent Publication No. 52-1.
As disclosed in Japanese Patent No. 6691 and the like, a pair of upper and lower slide shafts are provided on a narrow copper wall, and the slide shafts can be independently moved back and forth by a screw mechanism. , Slide shaft as drive mechanism, screw shaft,
Since the worm wheel, worm, motor, etc. are assembled to the narrow copper wall, work to disconnect the drive mechanism from the mold at the time of mold replacement, such as removing bolts of joints, connecting motor wiring and hydraulic piping, etc. Since it requires replacement work, the mold replacement time becomes long, and there is a safety problem.

Therefore, the present applicant previously proposed a device for changing the narrow surface width of a mold for a continuous casting machine, which solves the above problems.
[See Japanese Patent Application No. 58-97103 (Japanese Utility Model Publication No. 2-27952)]

The outline of the narrow surface width changing device for a mold for a continuous casting machine according to the above invention will be described with reference to FIGS. 4 to 6. As shown in FIG. 4, the wide surface clamping device of the continuous casting mold M is
In order to clamp the reference side and anti-reference side wide surface copper walls 21 and 22, respectively, a narrow surface copper shown in the figure is constituted by reference side and anti-reference side wide surface clamping devices 24 and 25 provided facing the C-shaped frame 23. wall
26 is sandwiched. Then, the narrow copper wall 26 is set to the width direction W of the slab.
The narrow surface width changing device 27 is a device for moving the narrow surface width.

The narrow surface width changing device 27 includes a C-shaped frame 23.
A drive mechanism 29 is separately provided in the direction orthogonal to the axis of the driven mechanism 28 in the horizontal plane with respect to the driven mechanism 28 assembled in the above, and the drive mechanism 29 and the driven mechanism 28 are separated in the axial direction. It is configured by being connected by a possible coupling 30.

The driven mechanism 28, as shown in FIG.
A slide shaft 32 axially movably fitted in a cover cylinder 31 horizontally supported outward in the width direction of the mold M in the center of the C-shaped frame 23, and a screw provided in the axial direction of the slide shaft 32. The screw shaft 34 screwed into the hole 33, the worm wheel 36 fixed to the shaft end 35 of the screw shaft 34, and the worm wheel
It is basically constituted by a worm 37 meshing with 36, and a tip 38 of the slide shaft 32 is connected to the narrow copper wall 26. Further, the driven mechanism 28 is provided in a pair above and below the narrow copper wall 26, and corresponding to the pair of driven mechanisms 28,
A pair of upper and lower drive mechanisms 29 are installed on the sides of the C-shaped frame 23.

The drive mechanism 29, as shown in FIG. 6, has a motor 41 supported by a mounting box 40 fixed to the upper and lower walls of the water supply frame 39 (the lower part is omitted in the figure),
A drive shaft 43 coupled to the output shaft 42 of the motor 41, a spline shaft 44 formed at the tip of the drive shaft 43, and a compression coil spring 45 on the spline shaft 44 can bias the driven side coupling 46. Drive side coupling mounted on
The drive-side coupling 47 is detachably engaged with the driven-side coupling 46 coupled to the shaft end of the worm 37 of the driven mechanism 28 when the motor 41 is activated. , Drive shaft 43 rotation, drive side, driven side coupling
Through the coupling 30 formed by 47 and 46, the worm 37 of the driven mechanism 28 and the worm wheel 36 convert the rotation direction by 90 degrees to drive the driven mechanism 28.

Since the device for changing the narrow surface width of the mold for the continuous casting machine has the above-mentioned structure, when exchanging the old and new molds M, the driving side and driven side couplings 47, 46 are disconnected in the axial direction. By separating them, the replacement work can be performed with the drive mechanism 29 left on the water supply frame 39.

[0009]

By the way, in the above mold replacement, the way to separate or engage the driving-side and driven-side couplings 47, 46 is to separate the mold M from the reference side to the anti-reference side. In the case of engaging in the direction, the mold M is moved from the anti-reference side to the reference side direction, and it takes time to perform the movement and there is a safety problem. Further, in the narrow surface width changing device 27 having the above-mentioned configuration, when the mold M of a cast piece having the same thickness is replaced and the mold M is installed, the reference side wide surface copper wall 21 of the continuous casting machine is installed in the above-described manner. The driven side coupling 46 can be engaged with the driving side coupling 47 by adjusting to the reference side, but when the mold M having a different thickness is exchanged, the center position of the thickness is changed, so In the case of the same specifications as the drive mechanism 28, the drive side coupling 47 and the driven side coupling 46 cannot be engaged, and the driven mechanism must be prepared corresponding to the mold M having a different thickness. There wasn't.

The present invention has been made to solve the above problems, and its purpose is to allow a driven mechanism of the same specification to be used even for molds having different thicknesses, and to provide a compatible range. On the other hand, it is an object of the present invention to provide a device for changing the narrow surface width of a mold for a continuous casting machine, which can perform mold replacement safely and in a short time while expanding.

[0011]

In order to achieve the above-mentioned object, in the narrow surface width changing device for a continuous casting machine according to the present invention, a drive mechanism has one end coupled to an output shaft of a motor and the other end. A drive shaft having a spline formed therein, an intermediate shaft fitted to the spline shaft of the drive shaft so as to be displaceable in the axial direction and a spline formed at the other end, and fitted to the spline shaft of the intermediate shaft. The driving side coupling is biased in the engagement direction with the driven side coupling, and the cylinder for moving the intermediate shaft in the axial direction.

Then, the width variation of the narrow surface of the mold for the continuous casting machine is changed.
In the changing device, the intermediate shaft and the cylinder are connected via a yoke.
The yoke of the connecting Sico Te, may be provided with a compression coil spring for urging the intermediate shaft to the driven side coupling direction.

[0013]

In the present invention, the drive side coupling is provided on the intermediate shaft so that the intermediate shaft can be moved back and forth in the axial direction by operating the cylinder. By retracting the coupling, the coupling can be separated from the driven side coupling, and the mold can be replaced safely and in a short time without moving in the thickness direction.
In addition, since the driving side coupling can be engaged regardless of the position of the driven side coupling by advancing the cylinder, it is possible to easily install the driving mechanism of the same specification even if the molds have different thicknesses. it can.

[0014]

Embodiments of the present invention will be described below with reference to the drawings. The construction of the continuous casting mold M and the driven mechanism 28 assembled to the C-shaped frame 23 of this mold M in this embodiment is the narrow surface width changing device 27 of the prior application described in the section of the prior art. Since the same configuration as that of the above is used, the description thereof is omitted here.

1 to 3 show a driving mechanism in a narrow surface width changing device for a continuous casting machine according to the present invention. The drive mechanism 1 includes a pair of upper and lower motors installed on a mounting portion of a continuous casting machine (not shown), a drive shaft 4 connected to an output shaft 2 of the motor and rotatably provided on a support frame 3.
A spline shaft 5 formed at the tip of the drive shaft 4 and an intermediate shaft 7 fitted to the spline shaft 5 so as to be movable in the axial direction and having a spline formed at a small-diameter portion 6 at the tip thereof.
And a cylindrical shaft 9 rotatably holding the intermediate shaft 7 and integrally coupled with the intermediate shaft 7, while being movably provided in the support frame 3 via a bush 8 in the axial direction, and the support frame 3 The hydraulic cylinder 11 provided on the back surface of the hole 10 formed in the middle of the pair of upper and lower cylindrical shafts 9 and the central portion attached to the tip of the rod 12 of the hydraulic cylinder 11 and on the upper and lower sides respectively. A yoke 13 to which the tip of the cylindrical shaft 9 is fixed, and a driven coil coupling 14 on a small diameter portion 6 of the intermediate shaft 7 in which a spline is formed are driven by a compression coil spring 14.
And a drive-side coupling 15 that is attached so as to be capable of being urged to.

Therefore, when the driving side coupling 15 of the driving mechanism 1 and the driven side coupling 46 of the driven mechanism 28 are separated from each other, the hydraulic cylinder 11 is actuated to the retracted side and the yoke 13 and the cylindrical shaft 9 are operated. The drive side coupling 15 is mechanically retracted together with the intermediate shaft 7 via the shaft to disengage, and when engaged, the hydraulic cylinder 11 is operated to the forward side and engaged by the reverse movement. Also hydraulic cylinder
Since 11 is used, even when the molds M having different thicknesses are installed, the drive-side coupling 15 is moved forward regardless of the position of the driven-side coupling 46 after the mold M is installed in alignment with the reference side. Can be engaged.

In the figure, reference numeral 16 is a compression spring mechanism. This compression spring mechanism 16 forms a yoke 13 provided at the tip of the rod 12 of the hydraulic cylinder 11 in a cross shape, while the compression spring mechanism 16 of the support frame 3 is provided. Protruding sideways to form a bottomed half-split cylinder 17,
A compression coil spring 18 is provided between the rear surface of each of the left and right ends of the yoke 13 formed in a cross shape and the bottom surface of the half-cylindrical body 17, and an operating trouble such as a pressure drop occurs in the hydraulic cylinder 11. Even if the drive side coupling 15
This has the effect of assisting the biasing of the driven side coupling 46 to prevent the driving side coupling 15 from coming off the driven side coupling 46.

When the drive mechanism is provided on the water supply frame like the narrow surface width changing device 27 of the prior application described in the above-mentioned prior art, the drive mechanism is provided with an intermediate shaft or the like as in the present invention. Alternatively, a cylinder may be provided on the outer surface of the water supply frame (opposite side of the mold), and a U-shaped yoke may be provided at the tip of the rod of the cylinder for connection.

[0019]

As described above, according to the device for changing the narrow surface width of the mold for the continuous casting machine according to the present invention, when the mold is replaced, the cylinder is actuated and the coupling on the driving side is retracted to drive the driven side. Since it can be separated from the side coupling, the mold can be exchanged safely and in a short time without moving in the thickness direction. In addition, since the driving side coupling can be engaged regardless of the position of the driven side coupling by advancing the cylinder, it is possible to easily install the driving mechanism of the same specification even if the molds have different thicknesses. it can.

[Brief description of drawings]

FIG. 1 is a side sectional view of a drive mechanism of a narrow surface width changing device for a mold for a continuous casting machine according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a front view of FIG.

FIG. 4 is a partially cutaway plan view of a conventional narrow surface width changing device for a continuous casting machine.

5 is a partially cutaway front view of FIG.

FIG. 6 is a side view of FIG. 4;

[Explanation of symbols]

1 Drive mechanism 2 Output shaft 3 Support frame 4 Drive shaft 5 Spline shaft 6 Small diameter part 7 Intermediate shaft 8 Bushing 9 Cylindrical shaft 10 Hole 11 Hydraulic cylinder 12 Rod 13 Yoke 14 Compression coil spring 15 Drive side coupling 16 Compression spring mechanism 17 Half Split cylinder 18 Compression coil spring 28 Driven mechanism 46 Driven side coupling M Mold for continuous casting machine

Claims (2)

(57) [Scope of utility model registration request] 1. A device for changing a width of a slab by moving a narrow copper wall during casting in a mold in which a pair of narrow copper walls are sandwiched between a pair of wide copper walls to form a double girder shape. Has a driven mechanism having a driven-side coupling at the other end and a narrow-faced copper wall coupled to it, and a driving-side coupling at the other end that is coupled with a motor and is separably engaged with the driven-side coupling In a narrow face width changing device for a continuous casting machine, which is divided into a drive mechanism, the drive mechanism includes a drive shaft having one end coupled to an output shaft of a motor and a spline formed at the other end, and one end driven. The shaft is fitted to the spline shaft of the shaft so as to be displaceable in the axial direction and the spline is formed at the other end, and is urged in the engaging direction of the driven side coupling fitted to the spline shaft of the intermediate shaft. Drive side coupling,
A narrow surface width changing device for a mold for a continuous casting machine, comprising a cylinder for moving the intermediate shaft in the axial direction. 2. A narrow surface of a mold for a continuous casting machine according to claim 1.
In the width changing device, the intermediate shaft and the cylinder are connected via a yoke.
The yoke of the connecting Chico, a continuous casting machine mold formed by providing a compression coil spring for urging the intermediate shaft to the driven side coupling direction narrow face width changing device.