Spray device for rolling equipment and method for removing/inserting said system from/into said roll stand

Abstract

A spray device lubricates and cools a strip and/or an air gap of a roller stand having multiple rollers. The spray device has a fixed spray table with an elongated shape and configured to be rigidly connected to a plurality of mounting plates in a row of bearing rollers of the roller stand. The fixed spray table includes a network for dispensing a fluid for lubricating and cooling via a plurality of nozzles, a connector for connecting the fluid-dispensing network to a network for supplying the fluid, and an attachment device for rigidly connecting the table to the mounting plates. In addition, a method for removing/inserting the spray device from/into the roller stand is described.

Claims

1. A spray device, comprising: an articulated table having a plurality of nozzles directed to spray at least one working roll of a roller stand with multiple rollers for rolling a metal strip; and a fixed spray table of an elongated shape rigidly connected to a plurality of mounting plates in a row of bearing rollers of the roller stand, said fixed spray table having a plurality of nozzles; said fixed spray table having a fluid-dispensing network for routing a fluid toward said plurality of nozzles of said fixed spray table, said plurality of nozzles of said fixed spray table distributed across the row of bearing rollers and directed to spray the fluid toward at least one of the metal strip or an air gap of the roller stand at a location adjacent the bearing rollers; said articulated table pivotally attached to said fixed spray table; wherein said at least one working roll that said plurality of nozzles of said articulated table are directed to spray is not one of the bearing rollers.

2. The spray device according to claim 1, wherein: said fixed spray table has a side with a rectilinear groove formed therein; and said articulated table has an elongated shape and is fitted into said rectilinear groove.

3. The spray device according to claim 2, wherein said articulated table has a dispensing network for the fluid.

4. The spray device according to claim 3, wherein said fluid-dispensing network of said fixed spray table has a connector capable of being coupled to a network for supplying the fluid to be sprayed when the row of bearing rollers or said articulated table is inserted into the roller stand and said dispensing network of said articulated table has a connector capable of being coupled to the network for supplying the fluid to be sprayed when the row of bearing rollers or said articulated table is inserted into the roller stand.

5. The spray device according to claim 2, wherein said articulated table contains, at least at one of its ends, a coupler for coupling to a transmission system for transmitting a command for a movement of said articulated table.

6. The spray device according to claim 5, wherein said articulated table has a fluid dispensing network, and said coupler for coupling to the transmission system is capable of coupling a network for supplying the fluid to said fluid dispensing network of said articulated table.

7. The spray device according to claim 1, wherein said fixed spray table has an end with a coupling device.

8. A row of bearing rollers of a roller stand, comprising: mounting plates; a plurality of bearing rollers; a single roller-bearing shaft, said bearing rollers and said mounting plates mounted on said single roller-bearing shaft; and a spray device having an articulated table having a plurality of nozzles directed to spray at least one roller of the roller stand other than one of said plurality of bearing rollers; said spray device further having a fixed spray table of an elongated shape rigidly connected to said mounting plates, said fixed spray table having a plurality of nozzles; said fixed spray table having a fluid-dispensing network for routing a fluid toward said plurality of nozzles of said fixed spray table, said plurality of nozzles of said fixed spray table distributed across said plurality of bearing rollers and directed to spray the fluid toward at least one of a metal strip or an air gap of the roller stand at a location adjacent said plurality of bearing rollers; and said articulated table pivotally attached to said fixed spray table.

9. The row of bearing rolls according to claim 8, wherein said mounting plates are configured to act as a support having two plates with adjacent surfaces intended to rest on a frame of the roller stand, said adjacent surfaces forming an angle of 90? with one another.

10. A multi-roller roller stand, comprising: multiple rolling rollers for rolling a metal strip; a network for supplying a fluid; and a row of bearing rollers, including: mounting plates; a plurality of bearing rollers; a single roller-bearing shaft, said bearing rollers and said mounting plates mounted on said single roller-bearing shaft; a spray device having an articulated table having a plurality of nozzles directed to spray at least one of said multiple rollers; said spray device further having a fixed spray table of an elongated shape rigidly connected to said mounting plates, said fixed spray table having a plurality of nozzles; said fixed spray table having a fluid-dispensing network for routing a fluid toward said plurality of nozzles of said fixed spray table, said plurality of nozzles of said fixed spray table distributed across said plurality of bearing rollers and directed to spray the fluid toward at least one of the metal strip or an air gap of the roller stand at a location adjacent said plurality of bearing rollers; and said articulated table pivotally attached to said fixed spray table.

11. The multi-roller roller stand according to claim 10, further comprising: a frame; and a control system; said control system for controlling a movement of said articulated table, said control system fixed to said frame.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

(1) Exemplary embodiments and applications provided using the following figures will help give a better understanding of the present invention.

(2) FIG. 1 example of a spray device for a rolling mill of the 20-High type according to the prior art.

(3) FIG. 2 exemplary embodiment of a rolling mill of the 20-High type according to the invention.

(4) FIG. 3 exemplary embodiment of an articulated table of a spray device according to the invention.

(5) FIG. 4 exemplary embodiment of an upper row of bearing rolls including a spray device according to the invention (bottom view).

(6) FIG. 5 exemplary embodiment of an upper row of bearing rolls including a spray device according to the invention (top view).

(7) FIG. 6 view of a part of the external face of a roll stand on the motor side according to the invention comprising an exemplary embodiment of a control and transmission system for movement of an articulated table.

(8) FIG. 7 view of a part of the internal face of a roll stand on the motor side according to the invention comprising an exemplary embodiment of a control and transmission system for movement of an articulated table.

DESCRIPTION OF THE INVENTION

(9) As an example, FIG. 1 presents a sectional view of a rolling mill of the 20-High type comprising a spray device 11, 11, 12, 12 according to the prior art. A working roll 3, 3 in contact with a strip 2 to be rolled is supported by two intermediate bearing rolls 4, 4, themselves supported by three intermediate bearing rolls 5, 5a, 5, 5a, themselves supported by four rows of bearing rolls 6, 6, each row of bearing rolls being made up of a plurality of bearing rolls and mounting plates 7 mounted alternating on a single bearing shaft supported by said mounting plates 7.

(10) FIG. 2 presents a sectional view of an exemplary embodiment of a rolling mill of the 20-High type comprising a spray device according to the invention, using the same references as those used for FIG. 1. Unlike FIG. 1, the upper spray device 11 and the lower spray device 11 arranged at the input to the rolling stand are fixed respectively to the mounting plates 7 of the upper row of bearing rolls and to the mounting plates 7 of the lower row of bearing rolls situated furthest upstream with respect to the direction of travel D of the strip. Similarly, the upper spray device 12 and the lower spray device 12 arranged at the output from the roll stand are fixed respectively to the mounting plates 7 of the upper row of bearing rolls and to the mounting plates 7 of the lower row of bearing rolls situated furthest downstream with respect to the direction of travel D of the strip.

(11) FIG. 3 shows an exemplary embodiment of an articulated table 11B of a spray device according to the invention, comprising a dispensing network 121 for spray fluid comprising in particular at least one part capable of being fitted into said groove 111 (see for example FIG. 4) of said fixed table 11A. Said articulated table 11B also comprises a plurality of nozzles 122 distributed along the entire length of the articulated table, i.e. across the width of the roll stand, and intended to spray at least one working roll 3, 3 and adjacent intermediate bearing rolls 4, 4, 5, 5, 5a, 5a, 6, 6. Preferentially, said articulated table 11B also comprises, at each of its ends, a bracket 117 to support an upper working roll 3, said brackets 117 of the articulated table being capable of acting as a support for the upper working roll 3, in particular during assembly or dismantling of the rolling mill rolls or other operations requiring individual lifting of the upper working roll 3.

(12) FIGS. 4 and 5 present exemplary embodiments of a row of bearing rolls 6 on the stand input side with respect to the direction of rolling D including a spray device according to the invention, bottom view (FIG. 4) and top view (FIG. 5). Said row of bearing rolls 6 comprises a plurality of bearing rolls 61 and mounting plates 7 mounted alternating on a single roll bearing shaft 62, each bearing roll being in particular edged by two mounting plates. Each row of bearing rolls 6, 6 is also positioned and fixed to the frame 1 of the roll stand by means of said plates 114 and of said mounting plates 7 mounted alternating on a bearing shaft 62 and which provide for take-up of the forces resulting from rolling by the working rolls. Said mounting plates are fixed to a fixed table 11A of a spray device according to the invention. This fixed table 11A comprises a dispensing network 112 of spray fluid providing for the supply of spray fluid to nozzles 112 distributed opposite the strip when said row of bearing rolls 6 is mounted in the roll stand. Said row of bearing rolls 6 comprises in particular two plates 114 linking said mounting plates together and each intended to rest on the frame of the roll stand. Each fixed table 11A comprises in particular, at one of its ends, a coupling device 115 suitable for coupling the fixed table of the spray device to a device for removing said row of bearing rolls. Preferentially, said coupling device 115 comprises a supporting hook element 1151 comprising a bearing zone for the chocks on the operator side of the upper motorized intermediate rolls 5 illustrated in FIGS. 1 and 2. Advantageously, before the operation to remove an intermediate roll 5, said roll 5 remains suspended by the chock on the operator side, which can rest on said supporting hook element 1151 while being held, on the motor side, by an extension sleeve acting so as to transmit the motor torque. Said coupling device 115 also comprises in particular an axial retention bolt 116 for the articulated table, in particular intended to prevent any axial movement of said articulated table when opening a door in the roll stand on the operator side.

(13) FIGS. 6 and 7 are respectively a view of a part of the external, respectively internal face, on the motor side, of a preferential embodiment of a roll stand according to the invention. An exemplary embodiment of a control system 41 is in particular fixed to the outside of the roll stand, on an external face of the wall of the roll stand or of the door of the roll stand, on the motor side, and is coupled to a transmission system 42 providing for movement of the articulated table. The control system 41 comprises in particular an actuator the stem of which is coupled to a shaft 421 of said transmission system 42, said shaft 421 passing from one side to the other of the wall of the roll stand so as to transmit towards the interior of the roll stand a movement of said stem of said actuator reflecting a command for movement of the articulated table by the control system 41. Said shaft 421 being in particular hollow so as to permit routing of said spray fluid towards the dispensing network of the articulated table, in particular permitting the connection of said dispensing network of the articulated table to said network for routing said spray fluid. Said transmission system 42 can preferentially be automatically coupled to a means for coupling said articulated table so as to transmit to it said movement of the actuator stem.