JP2539592Y2 - Short-side exchanging device for slab thickness variable mold in continuous casting machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a short side exchanging apparatus for a slab variable mold in a continuous casting machine.

[0002]

2. Description of the Related Art In a continuous casting mold, a so-called variable thickness mode which constitutes a mold having a required thickness by replacing only a short side sandwiched between long side frames. -For example, see
No. 72749. This means that one of the long side frames that make up the mold is the fixed side,
The free side long side frame facing the fixed side long side frame is movably mounted on the fixed side long side frame, and a desired slab thickness size is formed between the two frames. The short side frame is replaceably held, and the frame cooling water supply / drainage pipe made for the short side frame can be replaced with both ends of the free side long side frame. Connected.

However, with such a structure, it is dangerous to remove the short-side frame from the moving device at a narrow portion on the machine, and therefore, it is difficult to remove the short-side frame from the machine.
After removing the entire mold, it is necessary to carry it to the work place and reassemble it into a short-side frame of the desired thickness, or to prepare a mold of a special thickness in advance.
In addition to the large size replacement time, the equipment cost is also high, which is extremely disadvantageous in terms of cost.

[0004] The present applicant has improved such a short side switching device and disclosed it in Japanese Patent Application No. 2-418217. This will be described below.

FIG. 1 is an overall structural view of the mold, FIG. 2 is a sectional view of a short side frame, and FIG. 3 is a partial plan view of the same.

In FIG. 1, 1 is a long side fixed frame,
Reference numeral 2 denotes a long-side movable frame facing the long-side fixed frame 1. A long-side copper plate 3 and a short-side copper plate 4 are sandwiched between these long-side fixed and movable frames 1 and 2 to form a mold space. Reference numeral 5 denotes a variable short side frame to which the short side copper plate 4 is fixed, and reference numeral 6 denotes a fixed short side frame which is provided outside the variable short side frame 5 and to which the variable short side frame 5 can be attached and detached. It is.

[0007] Reference numeral 7 (FIG. 2) denotes a short side moving spindle.
It is driven by the short side moving drive device 12. Reference numeral 8 denotes a tie rod provided through the opposed long side fixed frame 1 and the long side movable frame 2, and one end for adjusting the length of the tie rod provided on the outer surface of the long side fixed frame 1. The worm jack 11 allows the tie rod 8 to be removably engaged by remote control so that the size of the tie rod 8 can be adjusted. The other end of the tie rod 8 is a piston 9a which constitutes a plunger device 9 for releasing a clamp provided in the long side movable frame 2.
It has become. The piston 9a fits in a plunger chamber 9b constituting the plunger device 9, and the plunger chamber 9b
Is provided at the outer end of the casing 9c provided in the long side movable frame 2. In the casing 9c, a clamp spring 10 is provided with a bottom 9d of the casing 9c and a tie rod 8.
Is mounted between the flanges 8a provided in the first position. The bottom 9d of the casing 9c is engaged with a step 8b provided on the tie rod 8.

Reference numeral 13 (FIG. 4) denotes a positioning bracket provided on the variable short side frame 5, and a bracket receiver 14 is provided on the fixed short side frame 6 side correspondingly.
15 (FIG. 2) is a fixing bolt for fixing the variable short side frame 5 to the fixed short side frame 6, 16 is a watertight O-ring, and 17 is a spray water supply pipe. Reference numeral 18 denotes a mold cooling water supply / discharge pipe, and 19 (FIG. 2) denotes a water passage in the variable short side frame 5. Reference numeral 20 denotes a slit-like channel between the short side copper plate 4 and the variable short side frame 5, and 21 denotes a foot shoe. 22 is a hose for spray water and 23 is a nozzle.

FIG. 4 is a view showing a state immediately before the variable short side frame 5 is attached to the fixed short side frame 6. First, the variable short side frame 5 is hung by a rope, and the positioning bracket 13 is attached to the corresponding positioning bracket receiver 14.
When the fixing bolt 15 is screwed into the bolt hole 15a and tightened, the fixed short side frame 6 and the variable short side frame 5 are integrated. The space between the two is sealed by an O-ring 16, and the mold cooling water supply / discharge pipe 18 and the spray water supply pipe 17 are connected to a water path 19 in the variable short side frame 5, and a water path 19, a water path 20 The short side copper plate 4 can be cooled by the cooling water flowing through.

[0010]

[Operation] As shown in FIG. 1, when hydraulic pressure is supplied from the oil port 24 to the plunger device 9 for releasing the clamp, the piston 9
a, the clamp spring 10 is compressed via the flange 8a to eliminate the clamping force. Next, warm jack 11
Is driven by a hydraulic motor or an electric motor, the tie rod 8 expands and contracts. The amount of the elongation or shrinkage is electrically determined by a synchro or the like directly connected to the drive shaft. The long side movable frame 2 connected to the step 8b of the tie rod 8 via the casing 9c is opened. In this open state, FIG.
The variable short side frame 5 in which the short side copper plate 4 and the footshout 21 are set in advance is suspended as shown in FIG.
Move from side to side as shown by arrows.

When the bracket 13 is fitted into the bracket receiver 14 and tightened with the bolt 15, the fixed short side frame
The frame 6 and the variable short side frame 5 are integrated. As a result, the space therebetween is sealed by the O-ring 16, and the mold cooling water supply / discharge pipe 18 and the spray water supply pipe 17 are connected to the variable short side frame 5.
When the cooling water is sent, the copper plate 4 can be cooled by flowing through the cooling water passage 19 and flowing through the water passage 20.

Next, when the worm jack 11 is driven in the closing direction, the long side movable frame 2 moves in the closing direction and stops with the variable short side frame 5 sandwiched. Plunger
When the oil pressure is discharged from the oil port 24 of the device 9, the spring force of the clamp spring 10 acts as a clamping force to clamp the short side copper plate 4 with the long side copper plate 3.

[0013]

[Problem to be Solved by the Invention] As described above, in changing the mold thickness by changing the short side of the mold,
Although the short side has been mounted by bolts, this is a method of clamping with one touch using an actuator, thereby providing an exchange device that can shorten the replacement time and can be operated by a small number of workers. That is the task.

[0014]

[Means for Solving the Problems] A long side fixed frame,
A long side movable frame that can be opened and closed by remote control; and a pair of short side frames sandwiched between the long side fixed frame and the long side movable frame. Is composed of a fixed short side frame 6 connected to a moving device and a variable short side frame 5 attached to and detached from the fixed short side frame and having a short side copper plate fixed thereto. In the single-thickness variable mold, a bracket 13 provided below the variable short side frame 5 is engaged with a bracket receiver 14 provided below the fixed short side frame 6 and fastened at the upper side. The fastening device of the variable short side frame 5 to the fixed short side frame 6 has a projection or a concave portion such as a T-shaped bolt 25 fixed on the upper portion of the variable short side frame 5. A block and a block correspondingly provided above the fixed short side frame 6 and having the protrusion or the concave portion. Tsu and slide block 26 having a protrusion, such as a recess or T-shaped bolt engaging the click, the tie rod 28 having one end to the slide block 26 is connected
And the tie rod 28 penetrates and the fixed short side frame
A tightening spring 27, which is sandwiched between an end plate 33 fixed to the system 6 and a plate 34 separated from the end plate 33 and is screwed to a tie rod, and a piston 32 for operating a tie rod 28 are provided. Opening plunger 30 provided
It consists of

[0015]

Embodiment A description will be given based on FIG. 5 and FIG. In summary, the present invention is such that in the case of rearrangement of molds, the short side installation in the above-described conventional example, which was performed by manually tightening bolts, can be automatically performed using an actuator. is there.

FIG. 5 shows an assembled state of the apparatus of the present invention. Reference numeral 25 denotes a protrusion such as a T-shaped bolt (FIG. 7) which is screwed into a bolt hole 25a provided on the upper portion of the variable short side frame 5. Reference numeral 26 denotes a slide block fixed to one end of a tie rod 28, and a T-shaped bolt 25.
Is fitted into a T-shaped engaging recess 26a (FIG. 7) formed in the slide block 26 and tightened.
Reference numeral 27 denotes a tie rod 28 which is a clamping disc spring and is sandwiched between an end plate 33 fixed to the fixed short side frame 6 and a plate 34 separated from the end plate 33, and is preset by a nut 29. You. Reference numeral 30 denotes an opening plunger, and a tie rod 2
8 is provided at the end. When pressure oil is supplied from the hydraulic oil supply port 31, the piston 32 that contacts the end of the tie rod 28 is pressed. Then, the tie rod 28 is pushed against the tightening force of the tightening disc spring 27 and slides the slide block 26 to engage the engaging recess 26 a of the slide block 26.
And the T-shaped bolt 25 is released from the clamped state (tightening force).

In FIG. 5, a T-shaped bolt 25 is fitted into the engagement recess 26 a of the slide block 26 from above,
When the hydraulic pressure is released from the hydraulic pressure supply port 31, the spring force of the tightening disc spring 27 acts on the fitting portion between the lower bracket 13 and the bracket receiver 14 in the left direction in FIG. The variable short side frame 5 is fastened to and adhered to the fixed short side frame 6 via a T-shaped bolt 25 which engages with an engagement recess 26a of a slide block 26 attached to the end. Then, the spray water supply pipe 17 and the mold cooling water supply / discharge pipe 18 are connected. At this time, the sealing is completely performed by the O-ring 16.

(Replacement procedure) A hydraulic pressure is supplied from the hydraulic pressure supply port 31 of the opening plunger 30. Then, the piston 32 is pushed against the spring force of the tightening disc spring 27 (to the right in FIG. 5). Then, the slide block 26 moves in the direction of arrow A (rightward) in FIG. 5, the clamping force is released, and the T-shaped bolt 25 is free in the engagement recess 26 a of the slide block 26.

In this state, when the variable short side frame 5 is lifted upward by a rope (FIG. 6), the variable short side frame 5 is detached from the fixed short side frame 6.

In the state shown in FIG. 6, the new variable short side frame 5 is suspended from above, the bracket 13 is fitted to the bracket receiver 14, and the T-shaped bolt 25 is inserted into the engagement recess 26 a of the slide block 26. Fit. When the hydraulic pressure is released from the plunger 30 in this state, the tightening disc spring 27
The spring block pulls the slide block 26 toward the plunger 30 (the left side in FIG. 5), and the fixed short side frame 6 and the variable short side frame 5 are clamped to the state shown in FIG.

Due to the spring force of the disc spring 27 for continuous tightening, T
Since a clamping force is generated between the V-shaped bolt 25 and the engaging concave portion 26a, the clamping force is not lost due to an accident such as a hydraulic oil leak, and safety is ensured. In the above embodiment, the T-shaped bolt 25 is shown as the projection, but an eyebolt or the like may be used. In FIG. 5, the protrusion on the variable short side frame 5 side is a T-shaped bolt 25, and the fixed short side frame 6
On the side, an engagement recess 26a with which the T-shaped bolt 25 is engaged
Is provided, a block having an engaging recess is provided on the variable short side frame 5 side, and a T-shaped bolt is formed as a projection on the slide block 26 on the fixed short side frame 6 side. May be provided.

[0022]

[Effect] In the slab thickness variable mold for continuous casting,
A bracket 13 provided below the variable short side frame 5 is engaged with a bracket receiver 14 provided below the fixed short side frame 6, and a T-shaped bolt provided on the variable short side frame 5 side. Are engaged with the engaging recesses 26a provided in the slide block on the fixed short side frame 6 side.
The variable short-side frame 5 is pulled toward the fixed short-side frame 6 via a tie rod by a tightening spring 27 provided on the side, so that the engaging portion between the bracket 13 and the bracket receiver 14 is supported by a fulcrum. As a result, a clamping force is always applied by the upper spring device, and there is no fear of hydraulic leakage or the like, which is safe. Instead of a screw-in type, the head of a protrusion such as a T-shaped bolt 25 fixed to the variable short side frame 5 is engaged with the engaging concave portion of the slide block 26, and a disc spring for tightening is released by an opening plunger. By pressing against the spring force of 27 and loosening the engagement between the slide block and the projection, the variable short side frame can be easily adjusted.
Since the frame 5 can be made free from the fixed short-side frame 6, the replacement work can be performed by one-touch automatic operation without manual work.

[Brief description of the drawings]

FIG. 1 is an overall view of a variable thickness mold for continuous casting according to the prior invention.

FIG. 2 is a view showing one short side portion and showing a state where a variable short side frame is fixed to a fixed short side frame.

FIG. 3 is a view taken in the direction of the arrow III in FIG. 2;

FIG. 4 is a diagram showing a state in which a variable short side frame is attached to a fixed short side frame.

FIG. 5 shows a main part of the present invention, in which the variable short side frame is separated from the fixed short side frame.

FIG. 6 shows a state of dimensions for attaching the variable short side frame to the fixed short side frame.

FIG. 7 is a partially enlarged plan view taken along the line VII of FIG. 5;

[Description of Signs] 1 Long side fixed frame 2 Long side movable frame
3 Long side copper plate 4 Short side copper plate 5 Variable short side frame 6 Fixed short side frame
7 Short-side moving spindle 8 Tie rod 8a Flange 8b Step 9 Plunger 9a Piston 9b Plunger chamber 9c Casing 9d Bottom 10 Clamp spring 11 Worm jack 12 Short-side moving drive 13 Bracket 14 Bracket receiver 15 Bolt 15a Bolt hole 16 O-ring 17 Spray water supply pipe 18 Cooling water supply / drain pipe 19 Water path 20 Water path 21 Foot shoe 22 (For spray water) Hose 23 Nozzle 24 Oil port 25 T-shaped bolt 25a Bolt hole 26 Slide block 27 Disc spring for tightening 28 Tie rod 29 Nut 30 Hydraulic plunger 31 Hydraulic supply port 32 Piston

Claims (1)

(57) [Scope of request for utility model registration] A fixed long side frame, a long side movable frame that can be opened and closed by remote control, and a pair of short sides sandwiched between the long side fixed frame and the long side movable frame. A fixed short side frame (6) connected to a moving device, and a short side copper plate fixedly attached to and detached from the fixed short side frame. In the continuous casting slab thickness variable mold comprising the variable short side frame (5), the bracket (13) provided below the variable short side frame (5) is fixed to the fixed short side frame. A fixed short side frame which is engaged with a bracket receiver (14) provided at a lower portion of the frame (6) and tightened at an upper portion.
The fastening device of the variable short side frame (5) to the (6) is a T-shaped bolt (2) fixed on the upper part of the variable short side frame (5).
5) a block having a projection or a recess, and a corresponding recess or T-shaped bolt provided on the fixed short side frame (6) and engaged with the block having the projection or the recess. And a tie rod (28) having one end connected to the slide block (26).
And the tie rod (28) penetrates and the fixed short side frame
A clamping spring (27) which is sandwiched between an end plate (33) fixed to the drum (6) and a plate (34) separated from the end plate (33) and is preset by a nut (29) screwed to a tie rod. And an opening plunger (3) having a piston (32) for operating a tie rod (28).
0) A short-side exchanging device for a slab thickness variable mold in a continuous casting machine comprising: