JPS5939450A - Adjusting device for taper of mold - Google Patents

Abstract

PURPOSE:To enable the quick and exact adjustment of a taper by providing a mechanism which supports the short sides of a mold with support rods at the top and bottom and adjusts the taper of the mold by moving one of the rod. CONSTITUTION:A fixing screw 23 or 24 is passed in the through-hole 26 of an adjusting gear 21, and a positioning plate 22 and the gear 21 are made into one body. When a shaft end 27 is rotated, an outside cylinder 12 rotates and a support rod 10 moves; at the same time, the gear 21, a counter gear 20, a center gear 15, and a counter gear 20' move cooperatively, and a lower outside cylinder 12' rotates to move a support rod 10', thus moving short sides 3 in parallel and adjusting the width of a billet. The adjustment of a taper is accomplished by removing the screw 23 or 24 from the hole 26 to free the gear 21 and the plate 22, and rotating the shaft end 27 in conformity with the pitch of the hole 26, then only the upper outside cylinder 12 rotates and only the rod 10 moves by a specified extent, whereby the taper is adjusted.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus capable of quickly and accurately adjusting the taper of a continuous casting mold.

The short sides of the mold are tapered in the longitudinal direction according to the degree of shrinkage of the slab in order to improve contact between the mold and the slab, since the slab contracts as the temperature drops.

The amount of this taper is proportional to the length of the side, so move the block on the short side to obtain the width f! : For adjustable molds, it is necessary to adjust the taper of the short side each time the short side is moved.

As a means in this case, conventionally, as shown in FIG.
In a mold consisting of drive gears 4 and 5 that move the respective hinge parts 2 and 5 back and forth, when adjusting the taper after adjusting the width, move the drive gears 4 or 5 independently and use a taper gauge or the like to adjust the taper. A means of positioning was taken.

However, such an adjustment means has a drawback that the taper thickness after adjustment cannot be changed unless it is measured.

The present invention provides a device that can quickly obtain a predetermined taper without using special gauges or measuring instruments by adjusting the inclination of the short side of the mold, that is, the chihara in a stepwise manner at a predetermined pitch. It is.

That is, the present invention provides a continuous MH manufacturing mold in which the thickness of the slab is constant and the width can be changed, and the short side of the mold is tapered by rotation around a fulcrum provided at one end of the short side. By replacing the amount of back and forth movement of the fulcrum provided at the other end with the rotation angle of the lead screw provided to provide this movement, and adjusting the angle so that it can be changed in stages, ° DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a taper adjustment device for a mold in which the taper value can be defined.

FIGS. 2(A) to 2(D) are diagrams showing one embodiment of the device of the present invention, and FIG. 2(A) is a view taken in the direction of arrow B in FIG. 2(B);
Figure 2 (B) is an O-0 sectional view of Figure 2 G&), Figure 2 (
C) is the view from arrow A in Figure 2 (B), and Figure 2 CD) is the view from the 2nd
FIG. 2 is an explanatory diagram of the vicinity of the adjustment gear indicated by the reference numeral 21 in FIGS.

In Fig. 2 (A) to (D), the mold has a long side of 1°1.
' and a backup frame 2.2' that supports them.
These are assembled alternately with cross beams 5 and bolts 7 and 7'.

A spring 6.6 is used in this assembly to compensate for thermal expansion.

A support rod 10.10 is threaded and attached to the cross beam 5 in combination with outer cylinders 12, 12' so that the short side 5 of the mold and the backup frame 4 can move back and forth to adjust the width of the slab. .

The short side of the mold 5 and the backup frame 4 are supported vertically by upper and lower pins 9 and 9' (i.e., a fulcrum 9 provided at one end of the short side of the mold and a fulcrum ql provided at the other end), and at the same time It is pulled rearwardly by a tensioning rod 11 attached to pin 9' at the end.

8, 8', 8' are brackets provided on the mold side, 15 is a sleeve of the outer cylinder 12, and 14 is a tension rod 1.
1 sleeve, 15 center gear, 16 tension rod 1
1 is a spring for applying tension; 17Fi is a liner for the sliding part of the tension rod 11; 18 is a spring 16 and a liner 17;
19 is a lower main gear, and 20.20' is an interlocking auxiliary gear for transmitting the rotation amount of the adjustment gear (that is, lead screw) 21 to the center gear 15 and further to the substructure gear 19.

An adjustment gear 21 is inserted into the upper outer cylinder 12 so that it can rotate freely, and a through hole 26 is bored in the adjustment gear 21 so that the rotation angle can be specified. and is fixed to the outer cylinder 12.

Fixing screws 25 and 24 are screwed into the positioning plate 22, and their tips fit into the through holes 26 of the adjusting gear 21.

When the fixing screw 25 is fitted into the through hole 26, the other fixing screw 24 is provided at a position that is 1/2 of the pitch of the through hole 26.

27 is the tip of the outer cylinder 12, which is a shaft end for rotating the outer cylinder 12.

In the device of the present invention constructed as described above, in order to adjust the taper, first, the short side of the mold (referring to the combination of 5, backup frame, and 4; the same applies hereinafter) is moved in parallel to v:J change the width of

In this case, when the fixing screw 25 or 24 is passed through the adjusting gear 210 through hole 26 and the positioning plate 22 and the adjusting gear are integrated and the shaft end 27 is rotated, the outer cylinder 12 is rotated and supported (l Rad 10 Fi moves forward (i.e. toward the inside of the mold) and backward (towards the outside of the mold);
At the same time, the adjustment gear 21, auxiliary gear 20, center gear 15, and auxiliary gear 20' are interlocked with the rotation, so that the lower outer cylinder 12'
The lower support rod 10' is moved by the same amount as the upper support rod 10, and the short side of the mold is moved in parallel.

In this way, the short side of the mold is translated vh+ and adjusted to the desired slab width, and then the entire taper is adjusted.

To adjust the taper, move only the upper support rod 10 backwards to f8.
Do it by moving it. In order to predefine the movement of the support rod 10, the pitch of the through holes 26 is determined by determining the relationship between the amount of movement and the angle of rotation.

Therefore, the fixing screw 25 or 24 is loosened and removed from the through hole 26, the adjusting gear 21 and the positioning plate 22 are set free, and the shaft end 271! If it is rotated in accordance with the pitch of the r-through holes 26, only the upper outer cylinder 12 will rotate [7], and only the support rod 10 will move backward (or forward) by a specified amount, and the taper adjustment will be performed.

By the way, in order to rotate the shaft end 27 in accordance with the pitch of the through hole 26, the positioning plate 22 is rotated by rotating the shaft end 27.
Since the fixing screw 2S or 24 screwed into the positioning plate 22 also rotates, it is only necessary to rotate it to a position where the fixing screw 2S or 24 screwed into the positioning plate 22 appropriately fits into the through hole 26. That is, the fixing screw 25
If we focus on Focusing on the screw 24, since the fixing screw 24 and the through hole 26 match when rotated by 1/2 pitch of the through hole 26, the amount of movement of the support rod 10 can be obtained by 1/2 pitch. be able to. In this manner, by appropriately using the fixing screws 25, 24'i, a desired amount of movement of the support rod 10 can be obtained, and as a result, a desired taper adjustment can be performed.

As described in detail above, according to the device of the present invention, it is possible to change the width of the short side of the mold and adjust the taper using the same drive shaft, simplifying the adjustment work, and adjusting the taper amount to a predefined value. By setting the pitch of the through holes on the disc (adjustment gear) so that be able to.

Embodiment In the device shown in FIGS. 2(A) to 2(D), the through hole 26
The diameter of the pitch circle was set to 1200 wφ, and this was divided into 50 equal parts, each hole having an angle of 12 pitches. In addition, outer cylinder 1
2 and the support rod 10 had a thread pitch of 4 wm.

In the above, if the shaft end 27 is rotated and the through hole 26 is shifted by one pitch, the thread advance of the outer cylinder 12 and the support rod 10 will be 4150 nm = 0.1555 mm.

and two fixing screws 25. '24' (By using i7 alternately, the thread advance amount of the outer cylinder 12 and support rod 10 is α066611II11 11555w, 119
99wm, α2666. ---- and α066g can be changed in increments of 0 Mold width f: When increasing from 200m to 400mm, the taper change amount is generally 0.48 vm to 0.64
m, it can be seen that the taper can be adjusted with sufficient precision for practical use if the pitch is adjusted in stages as described above.

[Brief explanation of the drawing]

Figure 1 shows a conventional taper adjustment means, Figure 2 (A)
~ (DJ is a diagram showing an example of an embodiment of the device of the present invention, and the second
Figure (A) is a view in the direction of arrow B of Figure 2 (CB), Figure 2 (B) is a view from C-0Ilfi in Figure 2 (A), Figure 2 (C1 is a view of the
The arrow A deflection diagram in Figure (B), Figure 2 CD) is shown in Figures 2 (A) to (
0) is an explanatory diagram of the vicinity of the adjustment gear indicated by reference numeral 21.
Sub-Agents 1) Meifu Agent Ryo Hagiwara - Figure 2 (8)

Claims (1)

[Claims] In a continuous casting mold in which the thickness of the slab is constant and the width can be changed, the entire taper on the short side of the mold,
This is applied by rotation around a fulcrum provided at one end of the short side, and the back and forth movement t of the fulcrum provided at the other end is replaced by the rotation angle of the lead screw provided to provide this movement, and that angle is 1. A mold taper adjustment device, characterized in that a taper value can be defined by adjusting the taper so that it can be changed stepwise.