JP2005211907A - Device for roll rearrangement of rolling machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for roll arrangement of a rolling machine capable of smoothly and reliably performing roll rearrangement, and facilitating automation thereof irrespective of presence/absence of occurrence of a slip between a rearrangement truck and a track (a rail) when a roll set is connected to the rearrangement truck and attached/detached to/from a rolling stand on the track having a shift table installed in the direction orthogonal to the rolling direction between the rolling stand and a roll shop. <P>SOLUTION: When a cylinder is arranged backward of the waiting position of a rearrangement truck or on the rearrangement truck, the cylinder is connected to the rearrangement truck, and a roll set is attached/detached to/from a rolling stand, the roll set is pushed/pulled by the cylinder via the rearrangement truck, and attached/detached to/from the rolling stand. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention makes it possible to move a remodeling carriage on a track having a shift table (turn table or side shift table) laid in a direction orthogonal to the rolling direction between a rolling stand and a roll shop (maintenance of a roll, storage place). The present invention relates to a roll rearrangement device for a rolling mill that is arranged, connects and pushes and pulls a roll set to and from this rearrangement carriage, and attaches and detaches the roll set to and from a rolling stand.

For example, as shown in FIG. 8, a conventional roll roll work roll rearrangement apparatus is previously installed in a roll shop on a track 2 laid in a direction perpendicular to the rolling direction between a rolling stand 1 and a roll shop of a two-stage rolling mill. A frame with a wheel 3 (hereinafter referred to as a “roll set”) 5 incorporating a pair of upper and lower work rolls 4a, 4b with a roll chock is connected by a connecting device 6 to move a reconfigurable carriage 7 with a driving device Ma. A shift table (here, a turntable) 8 provided with a short track (2a, 2b) for placing the short track and the roll set 5 on standby is arranged, and the rolling stand 1 For example, on the drive side (DS side), the spindles 9 and 10 connected to the roll drive motor and the pinion 12 driven by the drive unit 11 are engaged. Cormorant rack 13 there is work roll recombinant device placing the pinion stand 15 having a retractable pusher bar 14 has a.
In this work roll rearrangement apparatus, the work roll set 5 is moved from the roll shop to the turntable 8 by the rearrangement carriage 7, and the work roll set 5 from the turntable 8 is accurately positioned in the rolling stand 1 by the pusher bar 14. The work roll set 5 in the rolling stand 1 is pulled into the turntable 8 by the pusher bar 14 and the work roll set 5 is attached to and detached from the rolling stand 1. The work roll set 5 pushed out from the rolling stand 1 to the turntable 8 is moved to the roll shop by the rearrangement carriage 7.
However, this work roll rearrangement apparatus requires a pusher bar 14 having a long moving stroke that only draws the work roll set 5 into the rolling stand 1, and even when installed from the beginning of construction, a pinion stand 15 that is a peripheral device. There is a problem that the structure is complicated because the apparatus is installed in a narrow layout on the DS side, such as by providing a space through which the long pusher bar 14 can penetrate.

On the other hand, in the manual work roll rearrangement device, the operator performs manual control of the movement of the work roll rearrangement cart (buggy cart) that pushes out and retracts the work roll arranged on the W / S side. There is. This manual work roll rearrangement cart rotates and moves the motor-driven wheel on the rail, but the wear of the rail, the step at the rail connection part, or the resistance at the contact part between the rolling stand and the work roll is large. As a result, there is a problem that slip occurs between the wheels and the rails and smooth roll recombination cannot be performed.
Therefore, when trying to remodel this manual work roll rearrangement device into an automatic roll rearrangement device, if the above-mentioned slip occurs, the position of the work roll cannot be accurately controlled automatically, and therefore slip occurs. Pusher and pusher bar drive unit must be newly installed in the existing D / S side equipment group, which requires major remodeling, requires large equipment costs and long line downtime for remodeling There was a problem that.
In addition, Patent Document 1 discloses a roll changing device for a rolling mill that includes a roll-in / out pusher shared with a work roll and a backup roll on the drive side (DS side) or work side (WS side) of the rolling mill. Disclosed here is also the disposition of a shift table.
JP 2002-248510 A

  The present invention is a method in which a roll set is connected to a rearrangement carriage that is laid between a rolling stand and a roll shop in a direction orthogonal to the rolling direction and that is movably disposed on a track having a shift table in the vicinity of the rolling stand. This is applicable when the roll set is attached to and detached from the stand, and without using a pusher or pusher bar, the roll change operation can be performed smoothly and smoothly regardless of the occurrence of slipping between the change carriage and the track (rail). The present invention provides a roll changing device for a rolling mill that can be easily realized and automated.

The present invention is to solve the above problems advantageously, and the gist thereof is as follows.
(1). A roll set movable on the track is connected and pushed on a track that is laid in a direction perpendicular to the rolling direction between the rolling stand and the roll shop, and a shift table waiting for the roll set is arranged in the vicinity of the rolling stand. In the roll reassigning device of a rolling mill configured to movably arrange the recombination cart to be attached and detached from the rolling stand by pushing and pulling the roll set with this recombination cart, the rear side of the standby position of the recombination cart in front of the shift table In addition, a cylinder that pushes and pulls the recombination cart is arranged, and this cylinder and the recombination cart can be connected by a connecting device, and the roll set is pushed and pulled by the cylinder via the recombination cart to be attached to and detached from the rolling stand. A roll reassignment device for a rolling mill.
(2). In (1), when the cylinder that pushes and pulls the drive carriage is movable, and the roll set is attached to and detached from the rolling stand, the tip of the cylinder is connected to the rearrangement carriage at the standby position, and the rearrangement carriage is placed between the standby position and the roll shop. A roll reassignment device for a rolling mill, wherein the cylinder is retractable to a position that does not interfere with the roll set and recombination cart when the connection with the recombination cart is released.
(3). A roll set movable on the track is connected and pushed on a track that is laid between the rolling stand and the roll shop in a direction orthogonal to the rolling direction, and a shift table waiting for the roll set is arranged near the rolling stand. In the roll changing device of a rolling mill, in which the pulling rearrangement cart is movably arranged and the roll set is pushed and pulled with the rearrangement cart to be attached to and detached from the rolling stand, behind the standby position of the rearrangement cart before the shift table A cylinder stopper is disposed on the side, a cylinder is disposed on the reassembly cart, the rear end of the cylinder and the cylinder stopper are coupled by a coupling device, and the reassembly cart can be pushed and pulled by the cylinder. It is configured to be attached to and detached from the rolling stand by pushing and pulling through the reassembly cart by driving the cylinder. Roll recombination device of the rolling mill, characterized in that.
(4). In (3), when the cylinder stopper is movable and the roll set is attached to and detached from the rolling stand, the cylinder stopper is connected to the rear end portion of the cylinder of the recombination cart, and the recombination cart is moved between the standby position and the roll shop. A roll rearrangement device for a rolling mill, characterized in that the connection with the cylinder of the rearrangement carriage is released and the cylinder stopper can be retracted to a position that does not interfere with the rollset and rearrangement carriage.

The present invention has the following effects.
(1) Pushers and pusher bar devices are not required, and there is no need for major modifications to newly install pushers and pusher bar devices in the existing D / S side equipment group. The line pause period can be greatly shortened.
(2) When the work roll is attached to or detached from the rolling stand, the cylinder can be pushed and pulled reliably with the cylinder regardless of whether there is slip between the carriage and the track. It becomes possible to greatly improve the operation management accuracy (location management, time management accuracy) of the most important rearrangement truck. Therefore, recombination work can be easily automated, and this automation can reduce recombination time and greatly improve production capacity.

The present invention relates to a reconfigurable cart that is laid between a rolling stand and a roll shop in a direction orthogonal to the rolling direction, and is movably arranged on a track having a shift table (such as a turntable or a side shift table) in the vicinity of the rolling stand. This is applied when the roll set is connected to and pushed and pulled to and from the rolling stand and is attached to and detached from the rolling stand. When the roll set is attached to and detached from the rolling stand, for example, the pusher or pusher bar for the roll set on the DS side It has a structure which does not arrange | position.
More specifically, the roll set is attached to and detached from the rolling stand by a recombination cart that is pushed and pulled by a cylinder, and the operation management accuracy of the recombination cart is increased and the accuracy is improved regardless of the presence or absence of slip between the relocation cart and the track. This is a roll changing device for a rolling mill that can smoothly and reliably perform roll changing operations and can easily realize automation thereof. The rearrangement carriage is basically equipped with a drive device and can be moved by itself. It automatically moves between the standby position on the near side of the shift table and the roll shop to automate the roll rearrangement operation from the roll shop. Is also possible easily.

A first embodiment of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 2, the first embodiment is a work roll in which upper and lower work rolls 4a and 4b are incorporated between upper and lower backup roll sets 16a and 16b incorporated in a rolling stand 1 of a four-high rolling mill. An example of a roll changing device for attaching and detaching the set 5 is shown.
In the state of FIGS. 1 and 2, the rearrangement carriage 6 is in a standby position in front of the shift table (here, the turntable) 8, and the (new) work roll set 5 transferred to the turntable 8 is replaced with the rearrangement carriage. 7 shows a state immediately before the recombination cart 7 is connected to the work roll set 5 when being pushed into the rolling stand 1, and the state of FIG. 3 shows that the rearrangement cart 7 is transferred to the turntable 8 (new ) A state where the work roll set 5 is connected to the rearrangement carriage 7 and pushed into the rolling stand 1 is shown.
As shown in FIGS. 1 and 2, a recombination cart that moves by connecting a work roll set 5 with wheels 3 on a track 2 laid in a direction orthogonal to the rolling direction between a rolling stand 1 and a roll shop. 7 is movably arranged, and a turntable 8 provided with a short track 2a that forms a part of the track 2 and a short track 2b that waits for the work roll set 5 is rotatably arranged, and the rolling stand 1 is driven. A drive stand 15a having roll driving spindles 9 and 10 connected to a roll drive motor is disposed on the side (DS side).
Here, for example, in a state where the work roll set 5 is set on the rolling stand 1, the turntable 8 is transferred in advance to the short track 2 a by transferring the (new) work roll set 5 from the roll shop (180 The (old) work rolls 5 transferred and rotated (180 degrees) from the rolling stand 1 and pulled out from the rolling stand 1 by the rearrangement cart 7 (new) work rolls previously transferred. The set 5 can be pushed and set into the rolling stand 1 by the rearrangement carriage 7 and used to shorten the rearrangement time. Instead of the turntable 8, for example, a side shift table that moves in a direction orthogonal to the track 2 may be used.

The rearrangement carriage 7 is moved by the drive device Ma, and when the work roll set 5 on the roll shop side is connected to move to the turntable 8, and from the standby position before the turntable 8 to the roll shop side. When moving, it moves by itself, but as shown in FIG. 3, the work roll set 5 on the turntable 8 is pushed into the rolling stand 1 while being accurately positioned and set, or conversely from within the rolling stand 1. When pulling out and moving on the turntable 8, that is, when the work roll set 5 is attached to and detached from the rolling stand 1, wear of the track 2, the short tracks 2a, 2b, the short track 2a of the track 2 and the turntable 8, Due to the difference in level at the connecting part of 2b or the resistance at the contact part between the rolling stand 1 and the work roll set, etc. Wheel-track (rails) slip between occurs, it may not be possible to smoothly roll recombinant.
Therefore, when the work roll set 5 is attached to and detached from the rolling stand 1 by the remodeling carriage 7, in order to ensure the pushing and pulling of the work roll set 5, the track behind the standby position of the reconfiguration truck 7 in front of the turntable 8 The cylinder 17 is arranged on the front end of the cylinder 17 and the tip of the cylinder 17 is connected to the rearrangement carriage 7 by the connecting device 18. The rearrangement carriage 7 is forcibly pushed and pulled by the cylinder 17, so The work roll set 5 can be smoothly and reliably attached to and detached from the rolling stand 1 regardless of the presence or absence of slip between 2b. When the work roll set 5 is attached to and detached from the rolling stand 1, the drive device Ma of the rearrangement carriage 7 may not be driven.
In the figure, reference numeral 24 denotes a reel provided in the rearrangement carriage 7 around which a cable 25 for supplying power for driving the driving device Ma is wound.
(Corresponding to the embodiment of claim 1).

Here, since the cylinder 17 is disposed at the center of the track 2, when the rearrangement carriage 7 connects the work roll set 5 and moves from the roll shop side to the turntable 8, and before the turntable 8. When the cylinder 17 moves from the position to the roll shop side, the cylinder 17 is in a position where it interferes with the movement of the remodeling carriage 7 and the work roll set 5, so that the cylinder 17 has a track 2 as shown in FIG. When the work roll set 5 is attached to and detached from the rolling stand 1, the link mechanism rk provided in the lower pit 26 and the auxiliary cylinder 19 are movable in the direction perpendicular to the track 2 and can be retracted underground. Is in a position where it can be connected to the rearrangement carriage 7, and when the rearrangement carriage 6 and the work roll set 5 move on the cylinder 17, To release the connection of the example carriage 7 is made to be able to retreat to the underground side.
As shown in FIG. 4B, the cylinder 17 may be pivotable back and forth along the track 2 by a link mechanism rk and an auxiliary cylinder 19 so as to be retracted downward. Alternatively, the cylinder 17 may be moved up and down and retracted downward.
(Corresponding to the embodiment of claim 2).

A second embodiment of the present invention will be described with reference to FIGS. 5 (a), 5 (b), and 6. FIG.
As in the first embodiment, the second embodiment has a structure in which the reassembly cart 7 that connects and pushes and pulls the work roll set 5 is pushed and pulled by the cylinder 20 when the work roll set 5 is attached to and detached from the rolling stand 1. However, when the work roll set 5 is attached to and detached from the rolling stand 1 as shown in FIGS. The front end (rear end) of 20 is connected to a cylinder stopper 21 disposed behind the standby position of the recombination carriage 7 by a coupler 22 so that the recombination carriage 7 is forcibly pushed and pulled by the cylinder 20. This is different from the first embodiment. Detailed description of the contents common to the first embodiment will be omitted.
5 (a) and 5 (b) show a state in which the rearrangement carriage 7 connects the (new) work roll set 5 transferred to the turntable 8 and starts pushing and setting into the rolling stand 1. FIG. Yes. FIG. 6 shows a state in which the rearrangement carriage 7 is moved by the cylinder 20 and the work roll set 5 transferred to the turntable 8 is pushed into the rolling stand 1 and set.
In the second embodiment, the cylinder 20 that pushes and pulls the remodeling carriage 7 is installed in the remodeling carriage 7, and the cylinder stopper 21 is installed on the ground side. This cylinder stopper 21 can be installed in a small space with a simple structure. Compared with Example 1, it is effective when the installation space on the ground side is limited.

The remodeling carriage 7 is provided with a driving device Ma and moves on its own. When the work roll set 5 on the roll shop side is connected to move to the shift table 8 and from the standby position in front of the turntable 8, the roll shop As shown in FIG. 6, the work roll set 5 on the turntable 8 is pushed into the rolling stand 1 while being accurately positioned, or pulled out from the rolling stand 1. When the work roll set 5 is attached to and detached from the rolling stand 1 such as moving onto the turntable 8, the rear end of the cylinder 20 disposed on the recombination carriage 6 is connected to the cylinder stopper 21 by a coupler 22 and the cylinder 20 Forcibly push and pull the rearrangement carriage 7 to prevent slippage between the rearrangement carriage 7 and the track 2 and the short tracks 2a and 2b. Regardless of the free, so that the work roll set 5 in the rolling stand 1 can be smoothly and reliably detached. When the work roll set 5 is attached to and detached from the rolling stand 1, the driving device Ma of the rearrangement carriage 7 may not be driven.
(Equivalent to the embodiment of claim 3)

Here, since the cylinder stopper 21 is disposed at the center of the track 2, when the rearrangement carriage 7 connects the work roll set 5 and moves from the roll shop side to the turntable 8, and before the turntable 8 is reached. When the cylinder stopper 21 moves from the standby position to the roll shop side, the cylinder stopper 21 is in a position where it interferes with the movement of the rearrangement carriage 7 and the work roll set 5. When the work roll set 5 is attached to and detached from the rolling stand 1, the link mechanism rk provided in the lower pit 26 and the auxiliary cylinder 23 are movable in the forward and backward direction of the track and can be retreated to the underground side. In the position where it can be connected to the rearrangement carriage 7, the rearrangement carriage 7 and the work roll set are placed on the cylinder stopper 21. There when moving is adapted to be retracted to the underground side to release the connection between the cylinder 20 of the carriage 7 reclassified the cylinder stopper 21.
The cylinder stopper 21 may be pivotable in a direction orthogonal to the track 2 by a link mechanism and an auxiliary cylinder so as to be retracted downward. Alternatively, the cylinder stopper 21 may be moved up and down to be retracted downward.
(Equivalent to the embodiment of claim 4)

  The present invention is not limited to the contents of the above embodiments. For example, in the embodiment, the roll to be rearranged is a work roll of a four-high rolling mill, but can be applied even to a work roll of a two-high rolling mill or a three-high rolling mill. In addition, the components of the roll set, the structure of the roll rearrangement carriage, the arrangement of the track, each connection structure, the structure of the shift table (turn table or side shift table), the cylinder, the cylinder stopper, the operation procedure, etc. satisfy the claims. Change within the scope of

Plane | planar schematic explanatory drawing which shows the structural example of the roll rearrangement apparatus of Example 1 of this invention. FIG. 2 is a schematic side view of a partially cutaway cross section of FIG. 1. Plane | planar schematic explanatory drawing which shows the state which pushes and sets the work roll set to the rolling stand with the roll rearrangement apparatus of Example 1 of this invention. FIG. 4A is a schematic cross-sectional explanatory view taken along the line Aa-Ab in the cylinder retracting structure of FIG. 3, and FIG. (A) A figure is a plane schematic explanatory drawing which shows the structural example of the roll rearrangement apparatus of Example 2 of this invention, (b) A figure is a side schematic explanatory drawing of the partially notched cross section of (a) figure. Plane | planar schematic explanatory drawing which shows the state which has pushed and set the work roll set to the rolling stand with the roll rearrangement apparatus of Example 2 of this invention. Sectional schematic explanatory drawing in the Ba-Bb arrow line of FIG. 6 shows the retraction | saving structure of the cylinder stopper in the roll rearrangement apparatus of Example 2 of this invention. (A) A figure is a plane schematic explanatory drawing which shows the structural example of the conventional work roll rearrangement apparatus, (b) A figure is a side schematic explanatory drawing of the partially notched cross section of (a) figure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Rolling stand 2 Track 2a, 2b Short track 3 Wheel 4a, 4b Work roll 5 Work roll set 6 Connecting device 7 Recombination cart Ma Drive device 8 Turntable 9, 10 Spindle 11 Drive device 12 Pinion 13 Rack 14 Pusher bar 15 Pinion stand 15a Drive stand 16a, 16b Backup roll set 17 Cylinder 18 Coupling device 19 Auxiliary cylinder 20 Cylinder 21 Cylinder stopper 22 Coupler 23 Auxiliary cylinder 24 Reel 25 Cable 26 Pit

Claims (4)

  A roll set movable on the track is connected and pushed on a track that is laid in a direction perpendicular to the rolling direction between the rolling stand and the roll shop, and a shift table waiting for the roll set is arranged in the vicinity of the rolling stand. In the roll reassigning device of a rolling mill configured to movably arrange the recombination cart to be attached and detached from the rolling stand by pushing and pulling the roll set with this recombination cart, the rear side of the standby position of the recombination cart in front of the shift table In addition, a cylinder that pushes and pulls the recombination cart is arranged, and this cylinder and the recombination cart can be connected by a connecting device, and the roll set is pushed and pulled by the cylinder via the recombination cart to be attached to and detached from the rolling stand. A roll changing device for a rolling mill.   When the cylinder that pushes and pulls the drive carriage is movable and the roll set is attached to and detached from the rolling stand, the cylinder tip is connected to the rearrangement carriage at the standby position, and the rearrangement carriage is moved between the standby position and the roll shop. 2. The roll changing device for a rolling mill according to claim 1, wherein the cylinder is retractable to a position where it does not interfere with the roll set and the changing cart by releasing the connection with the changing cart.   A roll set movable on the track is connected and pushed on a track that is laid in a direction perpendicular to the rolling direction between the rolling stand and the roll shop, and a shift table waiting for the roll set is arranged in the vicinity of the rolling stand. In the roll reassigning device of a rolling mill configured to movably arrange the recombination cart to be attached and detached from the rolling stand by pushing and pulling the roll set with this recombination cart, the rear side of the standby position of the recombination cart in front of the shift table A cylinder stopper is disposed on the rear end of the cylinder. The rear end of the cylinder and the cylinder stopper are connected by a connecting device so that the rear wheel can be pushed and pulled by the cylinder. It is configured to be attached to and detached from the rolling stand by pushing and pulling through the recombination cart by driving Roll reclassification apparatus of a rolling mill, wherein the door.   When the cylinder stopper is movable and the roll set is attached to or detached from the rolling stand, the cylinder stopper is connected to the rear end of the cylinder of the recombination cart, and when the relocation cart is moved between the standby position and the roll shop, 4. The roll changing apparatus for a rolling mill according to claim 3, wherein the cylinder stopper is released so as to be retracted to a position where the cylinder stopper does not interfere with the roll set and the changing carriage.

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