JPH0639201U - Chamber sealing device - Google Patents

Abstract

(57) [Abstract] [Purpose] To improve the sealing performance between the openings provided on both side surfaces of the chamber in the width direction and the pusher inserted through the openings. [Structure] At the edge of the opening 1a on the pusher drive side, a stretchable and heat-resistant seal material 71 is attached to a water seal gutter 62 and seal material holding boxes 72 and 73 attached to a transport table stand 64. . A seal plate 75 is attached to the outer peripheral surface of the pusher 50. Seal plate 75 is a sealing material
By pressing against the 71, the seal plate 75 and the seal material 71 come into contact with each other, so that the chamber 16 and the pusher 50 are sealed. The opening 1b on the pusher discharge side is similarly sealed by the sealing plate 76 and the sealing material 71.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a chamber sealing device for sealing between a chamber used for non-oxidizing transport of hot rolling and a pusher for discharging a rough rolling treatment slab on the transport route to the outside of the transport route. .

[0002]

[Prior art]

 In hot rolling, for example, after heating the slab to a temperature at which it can be easily rolled in a heating furnace, the scale on the slab surface is removed, and then the slab is rolled by a rough rolling mill to perform a rough rolling treatment slab (commonly called "coarse bar"). That is). The rolled slab is transported to the finish rolling mill by a transport table having a chamber filled with an inert gas so that the surface of the rolled slab is not oxidized.

For example, an inert gas such as N ₂ provided in order to prevent surface oxidation during transportation of a metal material heated to a high temperature, as proposed in JP-A-61-2094. In the chamber sealed by the above, the metal material can enter and leave the chamber only in the conveying direction as shown in FIG. 2 which is a schematic side sectional view of the conventional non-oxidizing chamber. It was not considered, and discharge in the width direction of the transport path (axial direction of the transport roll) was not considered at all, and it was impossible. In FIG. 2, 10 is a transfer table, 12 is a table roll, 14 is a rough rolling treatment slab (metal material), 16 is a chamber, 22 is an inlet sealing device, 36 is a scale chute, 38 is an inert gas supply nozzle, and 40 is Is a shielding device, and 42 is a lid that can be opened and closed (the above is referred to as "prior art 1").

There are the following problems in applying the above chamber to the transfer table between the rough rolling mill and the finish rolling mill of the hot rolling line. That is, in the hot rolling line, if defects or warpage occur in the rough rolling treatment slab after rough rolling by the rough rolling mill, the rough rolling treatment slab is not conveyed to the finishing rolling mill The product is discharged as a semi-finished product outside the transportation route.

To this end, an openable chamber and a pusher for pushing the rough rolling treatment slab out of the conveyance path are provided. FIG. 3 is a schematic side sectional view showing a conventional chamber and pusher, and FIGS. 4 and 5 are schematic front sectional views. As shown in the drawing, the conventional apparatus is equipped with a lifting mechanism in a chamber 16 so that it can be lifted and lowered, and a pusher 50 provided with a claw 51 for discharging the rough rolling treatment slab 14 between the transfer rolls 12. The rough rolling treatment slab 14 on the conveying path is pushed out of the conveying path by the pusher 50. 4 and 5, reference numeral 2 indicates the pusher discharge side. Since the chamber 16 can be moved up and down, it does not hinder the movement of the semi-finished product (rough rolling treatment slab) 14 by the pusher 50 after the chamber is lifted and opened (the above is “Prior Art 2”). That).

In the prior art 2, as shown in FIG. 5, the pusher 50 and the opening 1 provided on both side surfaces of the chamber 16 through which the pushers 50 are inserted are movable without contacting each other. Appropriate clearance is provided to allow for this. In the drawing, 39 is a cylinder of a lifting mechanism, 61 is a chamber skirt, 62 is a water sealing gutter, 63 is a transfer roll bearing, 64 is a transfer table stand, 65 is a concrete floor, 52 is a pusher drive pinion, and 53 is The pusher drive rack and 54 are pusher receiving rolls.

[0007]

[Problems to be solved by the device]

 However, in Prior Art 2, since a large amount of the inert gas in the chamber leaks from the gap between the pusher 50 and the opening 1 described above, it is necessary to supply a large amount of the inert gas to maintain the inert atmosphere. Was essential. For this reason, the amount of inert gas supplied was large, which was economically disadvantageous.

Therefore, an object of the present invention is to provide an inert gas between a pusher and an opening provided in a chamber during a stop at a pusher stop position in a normal state during transportation of a metal material such as a rough rolling treatment slab. It is an object of the present invention to provide a chamber sealing device capable of sealing without leaking gas.

[0009]

[Means for Solving the Problems]

 This invention is directed to an opening provided on both side surfaces in the width direction of a chamber that surrounds a transfer table composed of transfer rolls arranged along a transfer path, and a drive provided outside the chamber and inserted into the opening. A chamber sealing device, which is movable by a mechanism in the axial direction of the transport roll, for sealing between a rough rolling treatment slab on the transport route and a pusher for discharging the rough rolling treatment slab to the outside of the transport route, The sealing device includes a seal plate that is provided on the outer peripheral surface of the pusher and that can close the opening, and a seal material that is attached to an edge portion of the opening so as to come into contact with the seal plate. It is characterized in that the seal plate and the seal material are in contact with each other during the stop at the pusher stop position in the normal state of transporting the slab. That.

[0010]

[Action]

 At the edge of the opening on the pusher drive side, attach a stretchable and heat-resistant seal material to the water seal gutter and the seal material holding box attached to the carrier table base. A seal plate is attached to the outer peripheral surface of the pusher. When the seal plate is pressed against the seal material, the seal plate and the seal material come into contact with each other, thereby sealing between the chamber and the pusher. In the opening on the pusher discharge side, sealing is similarly performed by the sealing plate and the sealing material.

[0011]

【Example】

 Next, the invention will be described with reference to the drawings. FIG. 1 is a schematic front sectional view showing one embodiment of the sealing device of the present invention. An opening 1a on the pusher drive side and an opening 1b on the pusher discharge side are provided on both side surfaces in the width direction of the chamber 16 surrounding the transfer table 10 made up of a transfer roller (not shown) arranged along the transfer path. There is. In FIG. 1, 2 indicates the pusher discharge side. A pusher 50 is inserted through the openings 1a and 1b. The pusher 50 inserted through the openings 1a and 1b is movable in the axial direction of the transfer roll, and the chamber 16 is lifted by a chamber elevating mechanism (not shown) provided outside the chamber 16 to open the chamber. After that, a driving mechanism (not shown) provided outside the chamber 16 has a function of discharging the rough rolling treatment slab (not shown) on the transfer path to the outside of the transfer path by the claw 51. However, in a normal state in which a metal material such as a rough rolling treatment slab is being conveyed, the pusher 50 stops the pawl 51 at the stop position where the pawl 51 is positioned on the pusher drive side opening 1a side.

At the edge of the opening 1a on the pusher drive side, the seal material holding box 72 attached to the water sealing gutter 62 and the seal material holding box 73 attached to the transport table base 64 are expanded and contracted. A sealing material 71 which is capable and has heat resistance is attached. In this embodiment, a seal material having a structure in which silicon rubber is covered with a ceramic fiber cloth is used. On the other hand, a seal plate 75 is attached to the outer peripheral surface of the pusher 50. The seal plate 75 has a size capable of closing the opening 1a during the stop at the pusher stop position in the normal state during the transportation of the metal material such as the rough rolling slab. By pressing the seal plate 75 against the seal material 71, the seal plate 75 and the seal material 71 come into contact with each other to perform sealing.

At the edge of the opening 1b on the pusher discharge side, a seal material 71 is attached to a seal material holding box 74 attached to the chamber skirt 61. On the other hand, seal plates 76 are attached to the upper and side surfaces of the outer peripheral surface of the pusher 50. In the opening 1b on the discharge side, the seal plate 76 is attached only to the upper surface and the side surface of the pusher 50, and is not attached to the lower surface. The reason is to avoid contact between the seal plate 76 and the receiving roller 54 during operation of the pusher 50. Therefore, the seal roller 77 is provided on the upper surface of the carrier table base 64 at a position directly below the seal box 74, thereby performing sealing. As a result, the seal roller 77 always keeps contact with the pusher 50. Since FIG. 1 is a cross-sectional view, the sealing material 71 is shown only on the upper and lower surfaces or the upper surface of the pusher 50, but the sealing material 71 is attached to the entire edge of the opening 1 and the pusher is attached. It goes without saying that the seals on both sides of the -50 are also sealed with the same structure as the upper and lower sides.

Further, in the present embodiment, the seal material is attached to the chamber side and the seal plate is attached to the pusher side. On the contrary, although not shown, the seal plate is attached to the chamber side and the seal material is attached to the pusher side. May be attached.

[0015]

[Effect of device]

 As described above, according to the present invention, the gap between the openings on both side surfaces of the chamber and the pusher can be eliminated, and as a result, the inert gas in the chamber can be sealed without leaking and the inside of the chamber can be sealed. It is possible to reduce the amount of the inert gas supplied to, and thus to bring about an industrially useful effect.

[Brief description of drawings]

FIG. 1 is a schematic front sectional view showing an embodiment of a sealing device of the present invention.

FIG. 2 is a schematic side sectional view showing an example of a conventional non-oxidizing chamber.

FIG. 3 is a schematic side sectional view showing a conventional chamber and pusher.

FIG. 4 is a schematic front sectional view showing a conventional chamber and pusher.

FIG. 5 is a schematic front sectional view showing a conventional chamber and pusher.

[Explanation of symbols]

 1 Opening 1a Pusher driving side opening 1b Pusher discharge side opening 2 Pusher discharge side 10 Transport table 12 Transport roll 14 Rough rolling slab 16 Chamber 22 Inlet sealing device 36 Scale chute 38 Inert gas supply nozzle 39 Cylinder for lifting mechanism 40 Shielding device 42 Openable lid 50 Pusher 51 Claw 52 Pusher drive pinion 53 Pusher drive rack 54 Pusher receiving roll 61 Chamber skirt 62 Water gutter 63 Transport roll bearing 64 Transport table stand 65 Concrete floor 71 Sealing material 72, 73 Sealing material Holding box 74 Sealing material holding box 75, 76 Seal plate 77 Seal roller.

Claims (1)

[Scope of utility model registration request] 1. An opening provided on both side surfaces in a width direction of a chamber that surrounds a carrying table composed of a carrying roll arranged along a carrying path, and a drive provided outside the chamber, the opening being inserted into the opening. A chamber sealing device, which is movable in an axial direction of the transport roll by a mechanism, for sealing between a rough rolling treatment slab on the transport path and a pusher for discharging the rough rolling treatment slab to the outside of the transport path. Is a seal plate that can close the opening provided on the outer peripheral surface of the pusher, and a sealing material that is attached to the edge of the opening so as to be in contact with the seal plate, and conveys the rough rolling treatment slab. During the stop at the pusher stop position in the normal state, the seal plate and the seal material are in contact with each other. Lumpur apparatus.