JPS6039135B2 - Hot steel billet loading/unloading device for heat retention furnace body - Google Patents

Description

[Detailed description of the invention] The present invention relates to a hot steel billet loading/unloading device for a heat retention furnace body.

In the production of long steel products such as rattan steel, for example, the rolling process may stop operating due to problems with the rolling mill or periodic temporary stoppages, and in such cases hot steel billets that have passed through the continuous casting machine are left to cool. There are many things. Therefore, a heat-retaining furnace body is provided that stores the heated steel pieces that are left to cool while temporarily retaining heat. The present invention provides a device for loading and unloading hot steel billets into and out of the heat retention furnace, which minimizes the amount of movement of hot steel billets to efficiently perform the loading and unloading operations, and simplifies the device configuration. It was created with the aim of improving heat retention by storing the steel pieces in close contact with each other. A loading mechanism is provided in which a hot steel billet is pushed parallel to the conveying path through a conveying path at a position, and a loading cylinder and a parallel movement guide are arranged at right angles to the pushing punch, and An extrusion village is provided on the skit rail, which is arranged at right angles inside the heat retention furnace, so that it can be freely operated in the length direction of the skid rail. The hot steel billet is conveyed by swinging the hot steel billet guide arm disposed between the conveyance path and the entrance of the heat retention furnace body and the carrying out mechanism consisting of a fixed feed twill that is moved by a pinion. This consists of a take-out machine side consisting of a take-out bar that is pivoted to a frame for sliding onto the road, and a stopper disposed on the side of the rolling process in the conveying path where the inlet of the heat retention furnace body is close. It is.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

In the figure, 1 is a hot steel billet 2 that has passed through a continuous casting machine (not shown).
This is a conveyance path for conveying the toner to the scorching furnace 3, and this conveyance path 1 is made up of tapered rollers IA connected to a drive mechanism (not shown) arranged at an appropriate pitch.

A heat retention furnace body 4 is provided adjacent to the conveyance path 1 so that its inlet 5 is along the conveyance path 1.

The heat retention furnace body 4 is formed in the shape of a box, and a heat-resistant brick 6 is laid at the bottom thereof, and a pair of skid rails 7 are arranged perpendicularly to the conveyance direction of the conveyance path 1. A heat insulating material 9 is provided on the inner peripheral surface of the shell 8 and on the ceiling.
The entrance 5 is provided with a door 11 that is moved vertically to open and close by a pneumatically or hydraulically driven cylinder 0.

Further, the heat retention furnace body 4 is provided with an exhaust gas duct 12 that guides the exhaust gas from the soaking furnace 3 into the heat retention furnace body 1 .

Note that 13 in the figure is a duct for discharging the exhaust gas introduced by the exhaust gas duct 12. Inlet 5 of this heat retention furnace body 1
A carrying-in mechanism 20 for carrying hot steel pieces 2 is disposed opposite to the above, with the conveyance path 4 interposed therebetween.

Carrying mechanism 20', carrying cylinder 2 driven by hydraulic pressure, etc.
2 so that it is perpendicular to the conveyance line of the conveyance path 1,
As appropriate, it is fixed to the pedestal 21, and this carry-in cylinder 2
At the tip of the rod 2, there is a pushing punch 2 that presses against the hot steel billet 2 on the conveyance path 1 and pushes the hot steel billet 2 into the heat retention furnace body 4.
3 is fixed so as to be parallel to the conveying line, and furthermore, parallel movement guide rods 24 of the pusher 23 are fixed at right angles near both ends of the pusher 23 so that the guide rod 24 can be slid in the longitudinal direction. It is formed so that it can be held movably.

The unloading mechanism 30 includes an extrusion village 31 that is movably disposed within the heat retention furnace body 4 in a direction perpendicular to the skid rail 7, and a rear wall 14 of the heat retention furnace body 4 that is fixed at the center of the extrusion village 31. It consists of a feed rod 32 that moves the extrusion village 31 through the feed rod 32, and a drive section 35 that drives a pinion 34 that is connected to a rack 33 formed at the bottom of the feed rod 32. A cooling pipe 36 for cooling the feed rod 32 is provided inside the feed rod 32, and a heat insulating material 37 is provided around the outer periphery of the feed dovetail 32.

Furthermore, a presser roller 38 is disposed on the upper surface of the feed rod 32 above the pinion 34 so as to rotate oppositely to each other, thereby ensuring reliable engagement between the pinion 34 and the rack 33. 39 is a support roller that rotationally supports the feed rod 31.

A take-out mechanism 40 is arranged between the inlet 5 of the heat retention furnace body 4 and the carry-in mechanism 20.

The extraction mechanism 40 is configured to move the heat whip 2 from above the conveyance path 1 to the heat retention furnace body 4.
Guide arm 41A that guides when being pushed into the entrance 5 of
To swing this guide arm 41A, an ejecting lever 41 is provided which is integrally formed by arranging the provided swinging arm 418 in a substantially dogleg shape, and the bent portion of this ejecting bar 41 is The swinging arm 41 is attached to the frame 21 etc. as a point.
A roller 42 is mounted on a shaft at the tip of B, and this roller 42 is in contact with a cam surface 43 formed at the lower part of the punch 23. This cam surface 43 is formed with an oblique notch so that it is gradually recessed upward as it goes from the tip of the pushing punch 23 toward the rear wall. Therefore, when the carrying cylinder 22 is pushed in, the ejecting lever 41 does not swing. The guide arm 41A guides the movement of the hot steel piece 2 (see FIG. 4). Furthermore, when the extrusion village 31 of the unloading mechanism 30 operates and pushes out one hot steel piece 2 onto the guide arm 41A, the loading cylinder 22 is moved back and the cam surface 43 pushes the swinging roller 42 downward. This causes the swing arm 41B to swing and the guide arm 41A to swing upward.
The heated steel piece 2, which has been pushed out by the width of the piece and placed on the guide arm 41, is slid onto the conveyor 1. Thereafter, the carry-in cylinder 22 moves forward to a position where the take-out bar 41 is neutral, and then stops. In addition, in the illustrated example, the carry-in cylinder 2
The swinging of the take-out bar 41 due to the reciprocating motion of the heat retaining furnace body 4
The heated steel billet 2 pushed out to the outside is reliably taken out onto the conveyance path 1, but the present invention is not limited to this. Of course, the take-out bar 41 may be swung by this take-out cylinder.

A stopper 50 for the heated steel billet 2 is disposed above the rolling process side of the conveyance path 4 where the inlet 5 is close to.

This stopper 50 has a cylinder 51 for actuating the stopper.
A stopper 52 is disposed at the tip of the stopper 5, and when the rolling process is stopped for some reason, the stopper 5 descends above the conveyor 4 to stop the hot steel billet 2.
After the zero operation, the carry-in mechanism 20 is operated and the heated steel billet 2 is pushed into the heat retention furnace body 4 and carried therein. Next, the operation will be explained.

Normally, the hot steel billet 2 that has passed through the continuous casting machine is conveyed to the rolling mill for the next process via the soaking furnace 3, but if some trouble occurs in this rolling mill, etc. When the temperature is temporarily suspended, the heat is retained and stored in the heat retention furnace body 1. In that case, the door opening/closing cylinder 10 is operated to move the door 11 upward and open the inlet 5. Next, the stopper 50 operates to position the locking body 52 on the conveyance path 4 and lock the hot steel piece 2.As the hot steel piece 2 stops, the carry-in cylinder 22 is activated and the push-in village 23 locks the hot steel piece 2 into the heat retention furnace body 1. Push the heated steel piece 2 into the inside (see Fig. 4).Hereinafter, the pushing punch 23
A similar repetition of ' is thus performed, whereby a large number of hot steel slabs 2 are successively pushed into the heat retention furnace body 1 . Further, in order to carry out the heated steel billet 2 that has been heat-retained and stored, first, the drive unit 35 is operated.
The feed rod 32 is sent a certain length via the pinion 34, and pushes out the hot steel piece 2 by the width of one piece out of the heat retention furnace body 1 (see FIG. 5).

The extruded hot steel piece 2 is placed on the conveyance path 4 by the take-out bar 41 which is swung by the return movement of the carry-in cylinder 22 (see FIG. 6). Thereafter, the hot steel slabs 2 are sequentially carried out from the heat retention furnace body 1 by repeating the same process. The present invention is configured as described above, and in the hot steel billet 2 loading/unloading device of the heat retention furnace body 4, the hot steel billet 2 is transferred to the conveyance path 1 via the conveyance path 1 in between at a position facing the inlet 5 of the heat retention furnace body 4. Pushing village 23 of parallel hot steel slab 2
Since the carrying-in mechanism 20 is constructed by arranging the carrying-in cylinder 22 and the parallel movement guide rod 24 at right angles to this pushing village 23, it is possible to push the hot steel billet 2 into the heat-retaining furnace body 1 from the side. , and the amount of push-in can be minimized.

Therefore, the stroke amount of the carry-in cylinder 22 can be reduced to a maximum of 4 mm, making it possible to make the device configuration more compact. On the skid rail 7 arranged in the heat retention furnace body 4 so as to be perpendicular to the conveyance path 1, an extrusion plate 31 that can slide freely in the length direction of the skit rail 7 is provided. Since the unloading mechanism 30 is configured by fixing the feed rod 32 that penetrates the rear wall 41 and is moved by a pinion 34 that meshes with the rack 33, it is possible to reliably extrude the hot steel billet 2 with a simple configuration. .

A take-out bar 41 that swings upward the hot billet guide arm 41A disposed between the conveyance path 1 and the inlet 5 of the heat retention furnace body 4 to slide the heated billet 2 onto the conveyance path 1 is mounted on a mount. 21 to form the take-out mechanism 40, the take-out mechanism 30' ensures that the hot steel pieces 2 pushed out of the heat retention furnace body 4 by a width corresponding to 21 hot steel pieces are reliably transferred onto the conveyance path 1. It can be placed on.

Moreover, by providing this take-out mechanism 40, the mechanism 30 for carrying out the heated steel billet 2 can be configured simply to push out only the width of 21 hot steel billets, as described above. Further, the take-out bar 41 is connected to the guide arm 41A of the hot steel piece 2 and the carry-in mechanism 20.
By connecting a swinging arm 41B pushed by a cam surface 43 which is gradually recessed upward toward the rear from the tip to the lower surface of the push-in village 23, the whole is formed into a bent body shape.
Not only is the unloading machine base 40' simplified since there is no need to provide a separate cylinder, etc., but the unloading mechanism 40 and the loading mechanism 20 are mechanically linked, so there is no need to provide a complicated control section, etc. This makes it possible to reliably prevent malfunctions such as the operation of the punch 23 when the guide arm 41A is in an upright position.

Furthermore, since the stopper 50 is disposed on the rolling process side of the conveyance path 1 where the inlet 5 of the heat retention furnace body 4 is close, the hot steel slabs 2 can be charged into the heat retention furnace body 4 in an orderly manner. Since the heated steel slabs 2 are charged with their sides closely attached to each other, the surface area of the two groups of heated steel slabs to be stored can be reduced, and the heat retention efficiency can be improved.

As explained above, according to the present invention, hot steel pieces can be taken in and out of the heat retention furnace with a simple configuration,
In addition, the amount of movement required for loading and unloading is minimized, resulting in excellent effects such as miniaturization of the entire device.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention; Fig. 1 is a perspective view of the whole with a partial cutaway, Fig. 2 is a side view of the same with a cutaway, and Figs. 3 to 6 show the inflow and outflow of hot steel pieces. , Fig. 3 is a partially cut-away side view of the main part of the heated steel billet being sent to the inlet of the heat retention furnace, and Figure 4 is a partially cut-away side view of the main part of the hot steel billet being carried in. , FIG. 5 is a partially cutaway side view of the main part with the ejection mechanism in operation, and FIG. 6 is a partially cutaway side view of the main part with the takeout mechanism in operation. 1... Conveyance path, IA... Tuffle roller, 2... Hot billet, 3... Soaking furnace, 4...
... Heat retention furnace body, 5 ... Inlet, 6 ... Heat-resistant brick, 7 ... Schitt rail, 8 ... Outer shell,
9...Insulating material, 10...Sirisoda, 11...
... Door, 12 ... Exhaust gas duct, 13 ... Exhaust duct, 14 ... Rear wall, 20 ...
Carrying mechanism, 21... Frame, 22... Carrying cylinder, 23... Oshikomi village, 24... Guide bar, 3
0...Export mechanism, 31...Oshide village, 32...Okurisha, 33...Rack, 34...Pinion, 3
5... Drive unit, 36... Cooling pipe, 37
...Insulation material, 38...Press roller, 39.
...Support roller, 40...Ejecting mechanism, 41...
...Eject bar, 41A...Guide arm, 41B...
... Swinging arm, 42 ... Roller, 43 ... Cam surface, 50 ... Stopper, 51 ... Cylinder, 52 ...
...Locking body. Figure 1 Figure 3 Figure 4 Figure 2 Figure 5 Figure 6

Claims (1)

[Claims] 1 In the hot steel billet loading/unloading device for the heat retention furnace, a pushing rod for hot steel billets parallel to the conveyance path is provided at a position opposite to the entrance of the heat retention furnace body, with a conveyance path in between, and the hot steel billets are carried into this push rod. A carry-in mechanism consists of a cylinder and a parallel guide rod arranged at right angles, and an extrusion rod that can slide freely in the length direction of the thread rail is placed on the thread rail arranged inside the heat retention furnace perpendicular to the conveyance path. The extrusion rod is provided with an ejecting mechanism that penetrates the rear wall of the heat retention furnace body and is arranged between the conveyance path and the inlet of the heat retention furnace body, and has a feed rod fixed to the extrusion rod that is moved by a pinion that easily meshes with the extrusion rod. A take-out mechanism includes a take-out lever pivotably mounted on a pedestal for swinging a heated billet guide arm upward and sliding the hot billet onto the conveyance path, and a conveyance path in which the inlet of the heat retention furnace body is located close to the take-out mechanism. 1. A hot steel billet loading/unloading device for a heat retention furnace body, comprising a stopper disposed across the rolling process.