JPH0715657Y2 - Vibration mold for continuous casting equipment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] In continuous casting, the present invention is directed to normal vibration in the normal casting direction with respect to the entire mold and to the opposing copper plate in the direction orthogonal to the casting direction. -It relates to a vibrating mold to which horizontal vibrations are applied.

[Prior art]

Continuous casting is a method of casting molten steel in a bottomless mold, coating the molten steel surface in the mold with powder, solidifying by primary cooling in the mold and subsequent secondary cooling in a guide roll group, and with a drawing roll. It is a method of producing a slab by drawing, in order to avoid damage to the mold surface by the slab being drawn, the mold is lowered according to the slab drawing speed, then raised to the original position, which It is generally practiced to repeatedly apply vibration in the casting direction (vertical vibration) to the mold.

On the other hand, the molten metal coating powder suppresses air oxidation by the molten layer, traps inclusions, etc., and prevents the molten layer from being rapidly cooled by flowing into the gap between the slab and the mold. It is used for, but only vertical vibration in the normal casting direction for the entire mold, the quality of the slab deteriorates due to poor melting of the powder into the gap between the slab and the mold, and the mold copper plate and slab This is one of the factors that cause breakout due to seizure, meltdown of the copper plate of the mold, and the like, which hinders high-speed casting.

Therefore, in order to eliminate such inconvenience, the present applicant has applied for a mold vibrating device which gives a pair of opposing copper plates vibrations (horizontal vibrations) that approach and separate from each other in the direction orthogonal to the casting direction. (Japanese Patent Application No. 1-192240, <JP-A-3-57537>
No.>, Japanese Patent Application No. 1-192241, <Japanese Patent Application Laid-Open No. 3-57538>, Japanese Patent Application No. 1-235168, <Japanese Patent Application Laid-Open No. 3-99756>).

This is to apply horizontal vibration to a pair of copper plates in synchronization with vertical vibration of the mold by an eccentric mechanism, a guide shoe and a guide roll, or a hydraulic cylinder.When the mold descends, the pair of copper plates move in the closing direction. By moving in the opening direction when the mold rises, it is possible to satisfactorily melt the powder between the surface of the molten steel shell and the copper plate.

7 and 8 show a flat slab assembly mold in which a pair of long-side copper plates 2 and a pair of short-side copper plates 3 are arranged so as to face each other. This is an example in which the short side copper plate 3 is sandwiched between the side copper plates 2 and the short side copper plate 3 is supported by the adjusting rod 12 so that the position can be changed, and the slab width can be changed. Horizontal vibration is given.

In such an assembly mold, conventionally, the long side copper plate 2 is mounted on the inner side, and both end portions of the pair of long side frames 4 which are expanded and contracted by the hydraulic cylinder 7 are projected from the long piece copper plate 2 in the cast piece width direction. A guide rod 50 having both ends fixed to the mold frame 6, and a cylindrical linear ball bearing 51 is interposed between the guide rod 50 and the long side copper plate 2 to move the pair of long side frames 4. It freely supports the guide.

[Problems to be solved by this device]

In the guide means including the guide rod and the cylindrical linear ball bearing as described above, when the long side frame 4 expands in the longitudinal direction due to the temperature rise during casting, and the ball bearing 51 extends more than the clearance, Bearing 51
There is a problem that the long-sided frame 4 cannot be smoothly expanded / contracted because the guide rod 50 is deformed or the guide rod 50 is deformed. The same applies to the thermal expansion of the long side frame 4 in the casting direction.

This invention has been made to solve the above-mentioned problems, and the purpose thereof is to absorb the thermal expansion of the copper plate frame due to the temperature rise at the time of casting and to smoothly perform horizontal vibration of the copper plate. To provide a vibrating mold.

[Means for Solving the Problems]

According to the present invention, as shown in FIGS. 1 to 4, the long side copper plate 2 and the short side copper plate 3 are in the shape of a rectangular frame (see FIGS. 1 and 6), or the copper plates 2a, 2b or 2a to 2d. Are combined in the mold frame 6 in a square frame shape (see FIG. 5),
In a vibrating mold in which horizontal vibrations that approach and separate from each other in the direction orthogonal to the casting direction are applied to the facing copper plates 2,
Long side frame 4 supporting a copper plate 2 to which horizontal vibration is applied
The groove type linear guides 8 for horizontally vibrating the long side frame 4 are provided between the corners of the mold vertical section and the mold frame 6, and the groove type linear guides are provided at these four corners. One of the eight, for example, 8-1 is a long side frame of this positioning groove type linear guide 8-1 by fixing its guide 9 or slider 10 to the long side frame 4 or the mold frame 6 to serve as a positioning guide. The groove type linear guide 8-4 provided at the diagonal corner is a slider.
A spring 11 built in the slider 10 and a movable permitting part in two directions orthogonal to each other due to the movable mounting structure of the guide 9, and the other two groove type linear guides 8-2 and 8-3 are the spring 1 built in the slider 10.
1 or the movable attachment structure of the guide 9 is configured to have the movement permitting portions in one direction.

For example, in the arrangement of the groove type linear guide 8 as shown in FIG. 2, the spring 11 is used in the longitudinal direction of the long side frame 4 (direction orthogonal to the casting direction), and the movable mounting structure is movable in the casting direction. To use.

In the arrangement of the groove type linear guide 8 as shown in FIG. 4, a movable mounting structure is used in the longitudinal direction of the long side frame 4 and a spring 11 is used in the casting direction.

[Action]

The long side frame 4 is guided and supported by the mold frame 6 by the relative movement of the guide 9 of the groove type linear guide 8 and the slider 10 in the horizontal vibration direction, but the long side frame 4 thermally expands due to the temperature rise during casting. However, the slider 10 attached to one end of the long side frame 4 contracts due to the bending of the spring 11, or the guide 9 at one end of the long side frame 4 moves with respect to the mold frame 6 to absorb the thermal expansion. Therefore, the horizontal vibration of the long side frame 4 can be smoothly guided and supported.

〔Example〕

The present invention will be described below with reference to an illustrated embodiment. As shown in FIGS. 1 and 2, this is an example applied to a flat slab variable width assembly mold 1, in which a pair of long side copper plates 2 and short side copper plates 3 are respectively long side frames 4 and The pair of short side copper plates 3 are mounted inside the short side frame 5 and are arranged to face each other so that the pair of short side copper plates 3 can move in a direction in which they approach and separate from each other.

Around the mold 1, a mold frame 6 which is rectangular in a plan view and surrounds the mold 1 is provided to form a double frame structure. The mold frame 6 vertically vibrates in the casting direction by an oscillation device (not shown).

Between the long side frame 4 and the mold frame 6, hydraulic cylinders 7 that provide horizontal vibrations that approach and separate the pair of long side frames 4 from each other are provided at the four corners of the long side frame 4 at a total of eight locations. The pair of long side copper plates 2 are controlled so as to be closed when the mold is lowered and opened when the mold is raised. The device that applies horizontal vibration is not limited to the hydraulic cylinder, and other devices can be used.

The short side frame 5 is held by the mold frame 6 via the adjusting rod 12, and the position of the short side frame 5 can be adjusted by an appropriate means such as a nut so that the width of the cast piece can be changed.

In the mold 1 as described above, the pair of long side frames 4 are formed longer than the long side copper plate 2 in the width direction of the slab as in the conventional case, and both ends of the long side frame 4 in the width direction of the slab and the mold frame 6 are formed. The groove-type linear guide 8 is disposed between and.

This groove-type linear guide 8 is composed of a guide 9 having a convex dovetail, a dovetail groove into which the dovetail fits, and a slider 10 having a ball rolling on the dovetail. To do. The horizontal vibration stroke of the long side frame 4 of the guide 9 and the slider 10 is 1 m.
Since it is as small as m or less, the long side frame 4 can be sufficiently guided and supported even in the same length in the relative movement direction.

This groove type linear guide 8 is arranged between the long side frame 4 and the mold frame 6 so that the load supporting surface is horizontal. For example, the guide 9 is attached to the mold frame 6 and the slider 10 is arranged on the long side. Attach to frame 4.

In the longitudinal section of the mold, the upper groove type linear guide 8-1 at one end in the width direction of the slab fixes the guide 9 to the mold frame 6 and the slider 10 to the long side frame 4 to serve as a positioning guide. The sliders 10 of the upper and lower groove type linear guides 8-3 and 8-4 at the other end have an elastic structure in which a spring 11 is built in, and the long side frame 4 is bent by the bending of the spring 11.
To absorb the thermal expansion in the longitudinal direction. The slider 10 is divided into a base portion 10A and a movable portion 10B.
Between the movable part 10B and the movable part 10B.
Are arranged so as to be pressed to the mold frame 6 side.

On the other hand, the base portions 9A of the guides 9 of the upper two groove type linear guides 8-1 and 8-3 and the base portions 10A and 10a of the slider 10 are fitted into the recesses formed in the mold frame 6 and the long side frame 4, The base portion 9A of the guide 9 of the groove type linear guides 8-2 and 8-4, which is tightened with bolts or the like, but is attached to the lower side of the mold frame 6, cuts out the lower part of the recessed portion thereof to fix the guide 9 A movable mounting structure is provided by movably mounting in the casting direction within a play between the bolt hole 14 and the bolt hole 14 (see FIG. 3) so that thermal expansion of the long side frame 4 in the casting direction can be absorbed.

FIG. 4 shows an example in which the groove type linear guides 8 are arranged so that their load supporting surfaces are in the casting direction, and sliders 10 are provided on the upper and lower surfaces of the corners of the long side frame 4. At the same time, guides 9 are provided on the horizontal projections provided above and below the mold frame 6. Thermal expansion in the longitudinal direction of the long side frame 4 is absorbed by the movable mounting structure of the guide 9, and thermal expansion in the casting direction is absorbed by the slider 10 with the spring 11 built therein.

The groove-type linear guide 8 is not limited to the dovetail-type linear ball bearing, and the tip of a T-shape, L-shape, etc. is a sluder.
A linear bearing that fits in 10 may be used, or a ball or the like is not limited to a ball. Further, the slider 10 may be attached to the mold frame 6.

Although the flat slab mold has been described above, the present invention is not limited to this, and it is needless to say that the present invention can be applied to the case where horizontal vibration is applied to the opposing copper plates in other molds.

For example, FIG. 5 shows an example of a billet mold in which copper plates 2a, 2b or 3a to 2d which are divided into two or four by diagonal lines of the billet are combined, and the present invention is applied to guide and support the frame. it can.

Further, it can be applied to a flat slab mold in which the long side copper plate 2 as shown in FIG. 6 is located between the short side copper plates 3. In this case, protrusions are provided on the upper and lower portions of the long side frame, and the groove type linear guides are provided here.

[Effect of device]

As described above, according to the present invention, in a vibrating mold in which the divided copper plates are combined in a frame shape in the mold frame and horizontal vibration is applied to the opposing copper plates, the longitudinal cutting of the long side frame supporting the copper plate to which the horizontal vibration is applied is cut. A groove type linear guide for horizontally vibrating the long side frame is disposed between a corner portion in plan view and the mold frame, and one of the groove type linear guides disposed at these four corners. Is a positioning guide, and the long groove side linear guide of this positioning groove type linear guide is provided in the diagonal corners of the groove type linear guide. Since the other two groove type linear guides have a permitting part and a permitting part that moves in one direction due to the spring built in the slider or the movable mounting structure of the guide, Absorb thermal expansion of the long side frame due to the temperature rise at the time of write, the horizontal vibration of the copper plate can be smoothly performed.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the vibration mold according to the present invention, FIG. 2 is a sectional view taken along the line II-II of FIG. 1, and FIG.
FIG. 4 is a partially enlarged view of the drawing, FIG. 4 is a cross-sectional view showing a modified example of FIG. 2, FIG. 5 is a schematic plan view showing an example of a mold for billet,
6 is a schematic plan view showing another example of the slab mold, FIG. 7 is a plan view showing a conventional vibration mold, and FIG. 8 is a plan view of FIG.
FIG. 8 is a sectional view taken along line VIII-VIII. 1 ... Mold, 2 ... Long side copper plate, 3 ... Short side copper plate, 4 ...
Long side frame, 5 ... Short side frame, 6 ... Mold frame, 7 ... Hydraulic cylinder, 8 ... Groove type linear guide, 9
…… Guide, 10 …… Slider, 11 …… Spring, 12 …… Adjustment rod, 13 …… Bolt, 14 …… Bolt hole.

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Inventor Hiroyuki Tofuku 5-2 Sokai-cho, Niihama-shi, Ehime Sumitomo Heavy Industries Machinery Co., Ltd. Niihama Works

Claims (1)

[Scope of utility model registration request] 1. A vibrating mold in which divided copper plates are combined in a mold frame in a frame shape, and opposing copper plates are subjected to horizontal vibrations approaching and separating from each other in a direction orthogonal to the casting direction. A groove-type linear guide for horizontally vibrating the long side frame is provided between the corner and the mold frame of the long side frame supporting the given copper plate in the mold vertical section, and arranged at these four corners. One of the groove-type linear guides provided is a positioning guide by fixing the guide or slider to the long-side frame or mold frame, respectively. The groove type linear guide provided in the section has a movement permitting section in two directions orthogonal to each other due to the spring built into the slider and the movable mounting structure of the guide, and the other two groove type linear guides. Is a vibrating mold for continuous casting equipment, having moving allowances in one direction due to a spring built in a slider or a movable mounting structure of a guide.