JP5359342B2 - Slab thickness changing mechanism of continuous casting assembly mold - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a casting piece thickness-changing mechanism for a continuous casting mold in which a short side-changing operation can be performed extremely simply while preventing occurrence of jouncing in an engagement part. <P>SOLUTION: In the casting piece thickness-changing mechanism for a continuous casting mold, a boss 7 is provided to the top of a stepping cylinder 4 for moving the short side of a continuous casting mold so as to protrude from the stepping cylinder in a direction perpendicular thereto, and the short side of the continuous casting mold is exchanged together with a short side frame by joining to or separating from a straddling part installed on the backside of the short side frame 3 of the casting mold, with respect to the boss. A mechanism 10 for taking off a play between the boss and the straddling part is provided at the backside of the short side frame. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a slab thickness changing mechanism for a continuous casting assembly mold that enables the slab thickness of a continuous casting assembly mold to be changed on-line.

  In the process of continuous casting, a technique for continuously changing the width of the slab without interrupting the casting operation is well known and put into practical use. On the other hand, changing the thickness of the continuously cast slab cannot be performed in a state where casting is continued. Therefore, once the casting is interrupted, the entire mold is replaced, or when performing on-line, the short side and the long side of the assembly mold are loosened, the short side is removed, and the short side is removed. Means for attaching a short side having a different length from the above has been proposed (see Patent Document 1, Patent Document 2, etc.).

Further, in Patent Document 3, a plurality of short side frames having different widths are prepared as means for solving the shortcomings of the short side changing device described in Patent Document 2, and a rod tip pin of a stepping cylinder is provided in each short side frame. mounting the hook-shaped hook that engages the rear, the該鈎shaped hook, without the lower side short U-shape, it is inserted into and removed from between the rod end pin and the short frame back to locked on the inside, pins and There has been proposed a continuous casting mold (assembly mold) including a cotter for preventing the hook from being detached.

JP-A-4-224049 Japanese Utility Model Publication No. 5-60644 JP 2002-11550 A

With the means described in Patent Document 3, the short side frame can be exchanged online by a simple means of engaging the copper plate of the short side frame and the back plate with the rod tip pin of the stepping cylinder for short side movement. Has the advantage of being. However, the continuous casting mold described in Patent Document 3 requires a cumbersome exchange operation such as requiring a cotter to fix the rod tip pin of the stepping cylinder and the hook-type hook when they are engaged. In addition, if there is play (backlash) in the engagement portion between the rod tip pin and the hook-shaped hook, it may cause inconveniences such as rattling on the short side during continuous casting operation and breakout.

  The present invention aims to solve the problem of the proposal described in Patent Document 3, and it is extremely easy to replace the short side for changing the mold thickness without causing play in the engaging portion. The purpose is to propose a slab thickness changing mechanism of an assembly mold for continuous casting.

The slab thickness changing mechanism for an assembly mold for continuous casting according to the present invention is provided with a boss projecting perpendicularly from the stepping cylinder at the tip of the stepping cylinder for moving the short side of the assembly mold for continuous casting. The continuous casting assembly mold replaces the short side of the continuous casting assembly mold together with the short side frame by connecting and separating the straddle portion attached to the back of the short side frame of the continuous casting assembly mold in the vertical direction. In the slab thickness changing mechanism, a boss-stretching portion play-off mechanism is provided separately from the boss and the straddling portion on the back side of the short side frame.

  It is desirable that the boss-stretching portion play-off mechanism is to hold the short side frame in a state pulled to the back side, and specifically, a short side extending toward the back side of the short side frame. What is necessary is just to be comprised from the side frame drawing apparatus and the attachment / detachment engaging part which is attached to the back side of the said short side frame, and engages with the front-end | tip part of the said drawing apparatus.

More specifically, the boss - with Matagaza portion between play up mechanism extends toward the said back on the back side of the short side frame, providing an attracting cylinder having a disk-shaped engaging portion at its distal end, The disk-shaped locking portion can be configured to be engageable with a locking body provided on the back side of the short side frame.
The short side moving stepping cylinder rod is composed of two upper and lower stepping cylinder rods, the bosses are provided on both the upper and lower two stepping cylinder rods, and the short side frame is attached to the back surface of the short side frame. The straddle portion can be provided in two upper and lower stages, and the two upper and lower straddle portions can be coupled and separated in the vertical direction with respect to the upper and lower two-stage bosses.
Further, in the vicinity of the contact portion between the boss and the straddle portion when the upper and lower straddle portions are coupled to the upper and lower two bosses, the surface shape of the boss is It may have a portion that matches the surface shape of the straddle portion so as to be engageable.
In addition, the bosses are provided in two pins in a projecting manner from both sides of the stepping cylinder rod at right angles, and the straddle portion can be engaged with the two bosses. Each set of two brackets attached to the back surface of the side frame is provided in an arc shape, and a disc-like locking portion is attached to the tip of the rod of the attracting device, When the boss of the stepping cylinder rod is coupled to the straddle portion of the bracket on the back surface of the short side frame, the engagement body that engages with the disk-shaped locking portion is provided. The disk-shaped locking portion of the attracting device is also engaged with the engaging body of the detachable engaging portion, and the disk-shaped locking portion engaged with the engaging body is moved by the pulling device to the short side frame. Tow the back side of the front It can be made to eliminate the play between the boss and the Matagaza portion.

  By using the slab thickness changing mechanism of the continuous casting assembly mold according to the present invention, the short side replacement for changing the mold thickness can be performed very easily. In addition, since the play of the engaging portion of the slab thickness changing mechanism is eliminated by this mechanism, operation troubles such as breakout during continuous casting operation are less likely to occur even when the thickness changing operation is performed.

It is a front view of the slab thickness change mechanism of the mold for continuous casting which concerns on this invention. It is a perspective view which shows the connection of the bracket attached to the boss | hub of a stepping cylinder, and a short side. It is a top view of the boss-stretching part play-off mechanism. It is a perspective view which shows the engagement state of the boss | hub straddle part play removal mechanism. It is explanatory drawing which shows the assembly state of the slab thickness change mechanism of the mold for continuous casting which concerns on this invention. It is a top view which shows different embodiment of the play removal mechanism between boss | hubs straddle parts which concerns on this invention. It is a top view which shows further different embodiment of the play removal mechanism between the boss | hubs straddle parts which concerns on this invention.

  FIG. 1 is a front view of a slab thickness changing mechanism of an assembly mold for continuous casting according to the present invention. In the continuous casting equipment, the short side 1 constituting the assembly mold is composed of a copper plate 2 that contacts the molten metal and a short side frame 3 that supports the copper plate, and the widths (distances in the depth direction in FIG. 1) differ. Has been prepared. Therefore, by applying the short side 1 having a required width between the long sides, a continuous cast slab having a necessary thickness can be manufactured. The short side 1 is connected to a stepping cylinder 4 for moving the short side, and the width of the assembly mold can be changed by using known means.

  In the present invention, the short side 1 and the stepping cylinder 4 are connected to each other via a boss 7 provided at the tip of the rod 5 of the short side moving stepping cylinder so as to protrude in a direction perpendicular to the rod. Specifically, as shown in FIG. 2 (b), a boss 7 protrudes from the tip of the rod 5 extending from the stepping cylinder 4, while the back side of the short side 1 is shown in FIG. 2 (a). The bracket 8 provided with the straddle portion 9 for the boss 7 on the lower surface side is attached, and the straddle portion 9 of the bracket 8 and the boss 7 are engaged as shown in FIG.

  As shown in FIG. 2, this operation is performed by moving the bracket 8 together with the short side 1 downward and engaging it with the boss 7 as shown in FIG. The entire operation will be described later.

By taking the above configuration, it is possible to perform an operation for changing the width of the assembly mold. However, the above arrangement is performed via a boss (7) provided protruding from the rod 5 connected to the stepping cylinder 4 and the short side 1 to the distal end portion of the rod 5 of the short side movement stepping cylinder perpendicularly Therefore, it is difficult to avoid the formation of a gap between the connecting portions, particularly between the boss 7 and the straddle portion 9 provided on the bracket 8. Therefore, normal vibration of the mold in the continuous casting operation is hindered, and there is a high possibility that operational troubles such as surface defects or breakouts occur in the slab.

  In the present invention, in order to prevent the occurrence of the trouble, a play removing mechanism 10 between the boss and the straddle portion is provided on the back side of the short side frame. The play removing mechanism 10 may have any function as long as it has a function of removing the play between the boss 7 and the straddle portion 9, and for example, a mechanism for inserting a wedge or the like between the play may be considered. It is possible to simplify the entire mechanism by pulling the frame 3 from the back side (biasing it toward the right side of the drawing).

  Specifically, the play removal mechanism 10 between the boss and the straddle portion is attached to the short side frame attracting device 15 extending toward the back side of the short side frame 3, and the back side of the short side frame 3. The attachment / detachment engagement portion 16 that engages with the distal end portion of the attracting device 15 can be used.

In the example shown in FIG. 3, the attracting device 11 uses the attracting cylinder 11. A disc-like locking portion 13 is attached to the tip of the rod 12, while an engagement body 14 is attached to the rear surface of the short side frame 3 so as to engage with the disc- like locking portion 13 and is attached and detached. The engaging portion 16 is configured. As it can be understood with reference to FIG. 4, the engaging member 14 is provided with a notch portion 14a, by lowering suspending the engagement member 14 with the shorter side frame 3, and the attractive device 15 and a short side frame 3 Can be brought into an engaged state.

In order to replace the short side of the continuous casting assembly mold by applying the present invention, as shown in FIG. 5, a bracket 8 and an engagement body 14 are attached to the new short side 1 on the back side (hereinafter referred to as “ On the other hand, the stepping cylinder 4 of the mold width changing device and the attracting device 15 used in the present invention are prepared as shown in FIG. Thereafter, using the crane 21 or the like, the exchanger is suspended so as to be engaged with the attracting device 15, and is engaged with the boss 7 at the tip of the stepping cylinder and the disc-shaped locking portion 13 of the attracting cylinder 11 . After this operation, the play between the boss and the straddle portion is removed by operating the pulling cylinder 11.

  In the above replacement work, loosen the long side of the assembly mold, and after removing the water supply pipe 20 attached to the short side, lift the short side with a crane etc. to remove it, and install a new short side It is natural to ensure.

  As mentioned above, although this invention was demonstrated based on the one Example, this invention can be implemented with a various aspect, unless it deviates from the technical idea. For example, as shown in FIG. 6, the attracting device can use a spring 17 instead of the attracting cylinder. In this case, the spring is preferably biased in advance in the direction of pulling the short side frame toward the stepping cylinder during assembly.

  The short-side frame drawing device extends toward the back side of the short-side frame, and a detachable engaging portion that is attached to the back side of the short-side frame and engages with the tip of the drawing device. In the play mechanism between the boss and the straddle portion, a detachable engagement portion including a ring-shaped member 18 and a hook 19 as shown in FIG. Specifically, the engaging portion is provided with a rotatable ring-shaped member 18 attached to the short side frame 3, while the short side frame attracting device 15 is provided with a spring 17 via a spring 17. It is configured as a hook 19 attached. In this boss-stretching portion play-off mechanism, after the short side replacement operation described above, the ring-shaped member 18 is hooked on the hook 19 and then the pulling cylinder 11 is operated. In this case, it suffices to perform the short-side suspension operation in exchanging the short side so as to be adjusted with the stepping cylinder for changing the mold width, and there is an advantage that the work process is simplified.

1: Short side
2: Copper plate
3: Short side frame
4: Stepping cylinder
5: Rod
7: Boss
8: Bracket
9: Stretching part
10: Play-off mechanism between boss and straddle
11: Attraction cylinder
12: Rod
13: Disc
14: Engagement body
15: Attraction device
16: Detachable engagement part
17: Spring
18: Ring-shaped member
19: Hook
20: Water supply pipe
21: Crane

Claims (6)

A boss is provided at the front end of the stepping cylinder rod for moving the short side of the assembly mold for continuous casting so as to protrude from the stepping cylinder rod at a right angle, and attached to the back of the short side frame of the assembly mold for continuous casting. In the slab thickness changing mechanism of the continuous casting assembly mold in which the short sides of the continuous casting assembly mold are exchanged together with the short side frame by connecting and separating the straddled portions in the vertical direction ,
A slab thickness change of an assembly mold for continuous casting, wherein the boss-strand portion play-off mechanism is provided separately from the boss and the straddle portion on the back side of the short side frame. mechanism.   2. The slab thickness of the continuous casting assembly mold according to claim 1, wherein the play-off mechanism between the boss and the straddle portion holds the short side frame in a state of being pulled to the back side thereof. Change mechanism.   A play-off mechanism between the boss and the straddle part is attached to the back side of the short side frame, the short side frame attracting device extending toward the back side of the short side frame, The slab thickness changing mechanism for an assembly mold for continuous casting according to claim 1, wherein the slab thickness changing mechanism is configured by an engaging / detaching engaging portion. The short side moving stepping cylinder rod is composed of two upper and lower stepping cylinder rods, the bosses are provided on both the upper and lower two stepping cylinder rods, and the straddle attached to the back surface of the short side frame 4. The structure according to claim 1, wherein the upper and lower two-stage bosses are connected to and separated from each other in the vertical direction. 2. A slab thickness changing mechanism for an assembly mold for continuous casting according to item 1. The surface shape of the boss is in the vicinity of the contact portion between the boss and the straddle portion when the straddle portion of the upper and lower two tiers is coupled to the boss of the two upper and lower steps, respectively. The slab thickness changing mechanism for an assembly mold for continuous casting according to claim 4, further comprising a portion that coincides with the surface shape of the portion. Two bosses are provided in a pin shape so as to protrude from the stepping cylinder rod at right angles to both sides,
The straddle portion is provided in an arc shape on each pair of brackets attached to the back surface of the short side frame so as to be engageable with the two bosses,
A disc-shaped locking portion is attached to the tip of the rod of the attracting device,
The detachable engagement portion includes an engagement body that engages with the disk-shaped locking portion,
When the boss of the stepping cylinder rod is coupled to the straddle portion of the bracket on the back surface of the short side frame, at the same time, the disk-like locking portion of the attracting device is also attached to the detachable engagement portion. Engaged with the engagement body,
The disc-shaped locking portion engaged with the engaging body is pulled to the back side of the short side frame by the pulling device to remove play between the boss and the straddle portion. The slab thickness changing mechanism of the continuous casting assembly mold according to claim 3.