JPH0472630B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention can be widely used in a mold height adjustment device that is indispensable for horizontal continuous casting machines.

(b) Prior art In horizontal continuous casting machines, when injecting molten metal filling the tundish into the mold installed in the mold frame, the mold is It is necessary to adjust the height in advance.

Conventionally, as a height adjusting device for a horizontal continuous casting mold, devices as shown in the front view of FIG. 1 and the partially sectional side view of FIG. 2 are generally used.
In the figure, 1 is a mold tube, which is installed in the center of the mold frame 2. 3 is a molded pedestal, which is placed on the foundation A. The mold frame 2 is placed on a mold pedestal 3 with a pair of upper and lower tapered liners interposed therebetween. The taper liner consists of an upper taper liner 6 and a lower taper liner 4 as shown in the figure, and the upper surface of the upper taper liner 6 and the lower surface of the lower taper liner 4 are flat, but the lower surface and the upper surface are in contact with each other. Assign a gentle slope to . Two bolts 5 are screwed into the lower tapered liner 4 at left and right sides with respect to the center of the mold frame 2. That is, although the bolt 5 is restrained from moving in the axial direction by the arm 7 attached to the mold frame 3,
It is mounted so as to be rotatable around an axis, and its distal end male threaded portion 5' is screwed into a female threaded portion 4' provided on the lower tapered liner 4. Therefore, if this bolt 5 is rotated to either the left or right, the lower taper liner 4 is moved by the screw movement.
It moves forward as if driving a so-called wedge against the frictional force on the sloped surface with the upper tapered liner 6, which is always in contact with it, or conversely, it moves back towards this side, that is, towards the operator. Therefore, the upper tapered liner 6
The mold tube 1 placed in the mold frame 2 is moved up or down by the mold frame 2 placed on the mold frame 2.
You will need to adjust the height.

Since the mold frame 2 on which the mold tube 1 is placed has a considerable weight, it is not easy to move it up and down smoothly by rotating a single bolt. Two left and right bolts 5 are attached to the lower tapered liner 4 as described above. Therefore, it is difficult for the operator to adjust the height of the mold tube 1 by rotating the two bolts 5 and moving the heavy mold frame 2 up and down evenly from side to side, resulting in a task that relies on intuition. However, it takes a lot of time for inexperienced workers and is a cause of increased costs.

(c) Purpose The present invention is a modification of the conventionally used taper liner method in which the operation is performed using two bolts, and the mold frame is made up of two symmetrical sloped
The mold frame can be moved up and down evenly at all times, making it extremely smooth and easy to use. The purpose is to adjust the height of the mold to shorten working time and, by extension, reduce costs.

(D) Structure The horizontal continuous casting mold height adjustment device according to the present invention is a horizontal continuous casting mold height adjusting device in which a mold frame 2 is arranged above a mode mount 3, and a mold tube 1 is provided in the center of the mold frame 2 in the left and right direction. In a continuous casting machine, the left and right sides 3 of the mold mount 3
With the rotation of the shaft 9 supported by 2 and 32',
A sloped surface 31 formed on the upper surface of the mold mount 3,
This is a height adjustment device that adjusts the height of the mold tube 1 by a pair of left and right pieces 8, 8' that slide at equal pitches in opposite directions on 31'. are restrained, and male threads 91, 91' are carved in opposite directions to the parts corresponding to the sloped surfaces 31, 31', and the male threads 91, 91' are
Nuts 85, 85' are screwed into each of the mold tubes 91', and the sloped surfaces 31, 31' are V-shaped rising symmetrically in the left-right direction from the center of the mold tube 1, and the pieces 8, 8' are Slope surface 31, respectively.
31', horizontal upper surfaces 82, 82', which are slidable in the left and right directions along the bottom surface 21 of the mold frame 2; Recessed grooves 83, 83' into which the nuts 85, 85' are fitted, allowing relative movement in the vertical direction with the corresponding pieces 8, 8', and restraining relative movement in the left and right direction, and the shaft 9. are provided with elongated holes 87, 87' through which the shaft 9 and the pieces 8, 8' can move relative to each other in the vertical and horizontal directions.When the shaft 9 rotates, the nut 85 , 85' are simultaneously moved outward or inward by equal distances along the sloped surfaces 31, 31', and the mold frame 2 placed on the pieces 8, 85' The mold tube 1 placed in the mold frame 2 is centered by moving upward or downward.

(e) Embodiment The height adjusting device for a horizontal continuous casting mold according to the present invention will be described in detail below based on one embodiment thereof. FIG. 3 is a partially sectional front view of the adjustment device, and FIGS. 4 and 5 are a side view and a plan view thereof, respectively. In the figure, 1 is a mold tube, and 2 is installed in the center of the mold frame. 3 is a molded stand,
Place it on foundation A. On the upper surface of the mold mount 3 are V-shaped sloped surfaces 31 and 31'.
are formed symmetrically as shown in the figure. Reference numerals 8 and 8' designate a pair of pieces corresponding to the above-mentioned slope surfaces 31 and 31', respectively, and their shapes are also left-right symmetrical. 9 is a shaft that passes through this piece from side to side,
It is rotatably supported on both left and right sides 32, 32' of the mold mount 3 so as to restrict movement in the axial direction.

As shown in the enlarged view in FIG.
The top bodies 84, 8 have concave grooves 83, 83' perpendicular to the slope direction of 31' (hereinafter referred to as the left-right direction).
4', and nuts 85, 85' which are vertically slidable along the inner surfaces of the grooves 83, 83'.
The frame bodies 84, 84' have lower surfaces 81, 84', respectively.
81' has a slope corresponding to the sloped surfaces 31, 31', and its upper surfaces 82, 82' are horizontal surfaces that contact and support the bottom surface 21 of the mold frame 2. The upper surfaces 82, 82' and the lower surfaces 81, 81' are provided with a fitting structure between the corresponding surfaces of the ridges 50, 50' and the grooves 51, 51' in the left and right direction, respectively. (See Figure 4). This frame body 84,8
Portions 86, 8 on both left and right sides of the concave groove portion 4'
6 and 86', 86' are provided with through holes 87, 87, 87', 87' through which the shaft 9 passes, and these through holes 87, 87 and 87', 87' The shaft 9 has an elongated hole shape and allows relative movement of the shaft 9 in the vertical direction. The nuts 85, 85' have female screw holes 88, 88' penetrating on the left and right sides, and the screw pitch of the female screw holes 88, 88' is the same between the left and right pieces, but the directions are opposite to each other. It's summery. A mold frame 2 is attached to the shaft 9.
Male threads 91, 91' are symmetrically oriented with respect to the center of the frame and are oriented in opposite directions, and nuts 85, 85' of the above-mentioned top are screwed into these male threads 91, 91', respectively. do. That is, when the shaft 9 is rotated to the left or right, both pieces move simultaneously to the mold frame 2 as the nuts 85, 85' move.
move inward or outward symmetrically about the center of Note that 10 and 11 are mold 1
After completing the height adjustment work, tighten and fix the mold frame 2 and mold pedestal 3 with bolts.
The top 8 is symmetrical on the left and right, and consists of two pieces in the front and back, and is moved by the rotational movement of the shaft 9.
8', etc., so that it does not interfere with the surrounding mechanisms,
The type of bolt etc. may be selected as appropriate.

In this adjustment device having the above configuration,
For example, if the male thread 91 of the shaft 9 and the female thread 8 of the nut 85 of the piece 8 screwed thereto are left-handed threads, and similarly, the thread 91' and female thread 88' are right-handed threads, and the mold tube 1 is below the pass line level of the mold outlet roller table 12, when the operator rotates the shaft 9 to the left, the pair of pieces 8 and 8' will move along the slope of the mold pedestal 3. Surface 31,3
1' and the bottom surface 21 of the mold frame 2, resisting the frictional force generated on each surface, the mold frame 2 is held at equal distances outward from the center of the mold frame 2, like a so-called wedge. Moving. Therefore, the mold frame 2 placed on the frames 8 and 8' is gradually pushed upward while maintaining its horizontal position, until the lower end of the inner surface of the mold tube 1 installed in the mold frame 2 is at the pass line level of the roller table. If you arrive just right,
The operator stops the rotation of the shaft 9. Thereafter, the four bolts 10 and 11 that had been loosened up to that point are tightened to fix the mold frame 2 and the mold mount 3, completing the mold installation and centering work.

When the lower end level of the inner surface of the mold tube 1 is above the pass line level of the mold outlet roller table 12, if the operator rotates the shaft 9 clockwise, the effect described in detail above will be completely reversed. That is, the pair of pieces 8, 8' slide toward the center of the mold frame 2 by the rotational movement of the shaft 9 to which they are screwed. Therefore, the mold frame 2 placed on the top gradually moves downward, and when the lower end of the inner surface of the mold tube 1 exactly matches the pass line level of the roller table 12, the operator lifts the shaft 9. Stop the rotation, and remove the mold frame 2 and mold mount 3 in the same way as above.
and fix it with four bolts 10 and 11,
Mold installation and centering work is completed.

In addition, before installing the heavy mold frame 2 including the mold tube 1 on the mold mount 3, the pair of left and right frames should be placed so that the pass line level of the roller table 12 and the lower end level of the inner surface of the mold tube 1 match. 8, 8' are moved and installed in the proper position, then the mold frame 2 can be simply placed on top of both pieces without the need to rotate the shaft 9 and adjust the movement of the pieces. Centering of the mold tube 1 can be performed more simply and easily.

Next, specific examples of mold installation and centering work including in-plane centering will be described in detail.

At the upper end of the mold pedestal 3, stopper projections 13 and 14 are installed in both the lateral and front-back directions. The stopper projection 14 in the front-rear direction is installed on the side that opposes the pull-out resistance of the slab.

The end surfaces 13' and 14' of the stopper projections that come into contact with the mold frame 2 are machined with high precision. For example, the dimensional accuracy between the lateral stopper end face 13' and the center of the mold tube 1 is ±0.5 mm.
The perpendicularity between the stopper end face 13' in the lateral direction and the stopper end face 14' in the longitudinal direction must have an accuracy of about ±0.1° to 0.2°.

The method for installing and centering the mold is as follows.

Place the mold frame 2 containing the mold tube 1 on top of the pieces 8 and 8', and attach the hydraulic cylinder 1.
5 to press the mold frame 2 against the lateral stopper end face 13'.

The mold frame 2 is pressed against the stopper projection 14 in the front-rear direction as follows. That is, the end fitting 16' of the hydraulic cylinder 16 fixed to the mold mount 3 and the piece 8 are fitted together, and the piece 8 has a protrusion 50, and the groove 51 of the bottom plate of the mold frame 2 and the protrusion 50 are fitted together. It matches. By releasing the hydraulic cylinder 15 and activating the hydraulic cylinder 16 to pull the piece 8, the mold frame 2 is moved to the stopper end face 1.
4'.

Next, the hydraulic pressure of the hydraulic cylinder 16 is released, and the centering gauge 17 is advanced into the mold tube 1 from the mold outlet side roller table 12, so that the lower end level 1' of the inner surface of the mold tube and the pass line level 17' match. Centering is performed using the height adjustment device.

Finally, FIG. 6 is a correlation diagram between the mold tube 1 and the centering gauge 17.
- Take the X arrow view, confirm that the gaps between the left and right ends of the inner surface of the mold tube 1 and the centering gauge 17, that is, the gaps a and b shown in the figure, are equal, and then check the hydraulic cylinders 15, 16 again. is activated, the bolts 10 and 11 are tightened to fix the mold frame 2 and the mold pedestal 3, and the mold installation and centering work is completed.

It goes without saying that the height adjusting device for a horizontal continuous casting mold according to the present invention is not limited to the above embodiments, and may be modified as appropriate without changing the gist thereof.

(F) Effect If the height adjustment device for a horizontal continuous casting mold according to the present invention is used, it will have the structure and function as already explained in detail, so that it will be possible to eliminate the problem caused by operating two bolts in the prior art. Eliminating various disadvantages such as uneven left and right vertical action of the mold frame, complicated and troublesome adjustment work, and wasted work time, the mold can be molded extremely easily and smoothly by operating the handle of a single shaft. This makes it possible to perform centering work, which greatly contributes to improving the efficiency of on-site work and reducing costs.

[Brief explanation of the drawing]

FIG. 1 is a plan view of a conventional horizontal continuous casting mold height adjustment device, FIG. 2 is a partially sectional side view of the same device, and FIG. 3 is a horizontal continuous casting mold height adjustment device according to the present invention. A front view of the continuous casting mold height adjustment device, FIG. 4 is a side view of the device, FIG. 5 is a plan view, FIG. 6 is a correlation diagram between the mold tube and centering gauge, and FIG. 7 is a diagram of the relationship between the mold tube and centering gauge. It is a perspective view of a piece. In the figure, 1: mold tube, 2: mold frame, 3: mold mount, 8, 8': frame,
9: Shaft, 10, 11: Bolt, 12: Roller table, 13, 14: Stopper protrusion,
15, 16: Hydraulic cylinder, 85, 85': Nut.

Claims (1)

[Claims] 1. A mold frame 2 is placed above the mold mount 3.
In a horizontal continuous casting machine in which the mold tube 1 is installed in the center of the mold frame 2 in the left and right direction, the mold mount 3 rotates as the shaft 9 supported by the left and right sides 32, 32' A height adjustment device that adjusts the height of the mold tube 1 by a pair of left and right pieces 8, 8' that slide at equal pitches in opposite directions on sloped surfaces 31, 31' formed on the upper surface of the mold tube 3. The shaft 9 is restrained from moving in the left-right direction, and male threads 91 and 91' are formed in opposite directions to each other at positions corresponding to the inclined surfaces 31 and 31'.
Nuts 85 and 85' are screwed into the pieces 1 and 91', respectively, and the sloped surfaces 31 and 31' are V-shaped rising symmetrically in the left and right direction from the center of the mold tube 1. are sloped lower surfaces 81 and 81' that are slidable in the left and right directions along the sloped surfaces 31 and 31', respectively, and horizontal upper surfaces that are slidable in the left and right directions along the bottom surface 21 of the mold frame 2. 82, 82' and nuts 85, 85' are fitted, and the nuts 85, 8
The shaft 9 passes through grooves 83, 83' that allow relative movement in the vertical direction between 5' and the corresponding pieces 8, 8', and restricts relative movement in the left and right direction.
8' are provided with elongated through holes 87, 87' that enable relative movement in the vertical and horizontal directions, and when the shaft 9 rotates, the nuts 85, 85'
The pieces 8, 8' that are pushed simultaneously move outward or inward by equal distances along the sloped surfaces 31, 31', and the mold frame 2 placed on the pieces 8, 8' moves upward or upward. A height adjusting device for a horizontal continuous casting mold, which centers a mold tube 1 installed in a mold frame 2 by moving it downward.