JPS63104706A - Band-shaped material lifter for flying joining device - Google Patents

Abstract

PURPOSE:To permit smooth feeding of sheet bars to a clamping device of a flying joining device by arranging plural lifting rollers between respective table rollers in a traveling section and providing means for vertically and individually moving the lifting roller groups. CONSTITUTION:The lifting roller groups 40 of the flying joining device are arranged symmetrically with the center of a roller table 5 within at least the section slightly wider than the traveling section of a flying joining machine 104 among the roller 5a groups of an intermediate roller table 5. The lifting roller groups 40 are divided to plural blocks 42 by vertical arrays and are connected to plural vertical movement driving devices 41 by the blocks 42. The driving devices 41 are actuated to rise the lifting roller groups 40 to lift sheet bars 3a, 3b onto the intermediate roller table 5 and thereafter, the sheet bars are joined by actuating the flying joining device at the time of joining the preceding and succeeding sheet bars 3a, 3b.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention mainly relates to a device for pushing up a strip-like plate material (hereinafter referred to as a sheet bar) of a running joining device in a continuous hot rolling line.

<Conventional technology> In conventional hot rolling lines, slabs are heated to the required rolling temperature in a heating furnace, rolled one by one in a rough rolling mill and a finishing mill, and wound into a coil shape in a coiler. Rolling (batch rolling) was carried out. Therefore, it is necessary to adjust the shapes of the head and tail ends of the leading and trailing sheet bars that are supplied to the finishing rolling mill, and to fit each sheet bar between the rolls (work rolls) of the finishing rolling mill. As a result, the problem of less effective utilization of equipment and poor production efficiency arose.

Therefore, in order to solve this problem, as in the hot rolling line shown in the schematic arrangement diagram in FIG. The tail end edge of sheet bar 3a and the head end edge of trailing sheet bar 3b are joined by a joining device 4, rolled by a finishing mill 2, and cooled to a required winding temperature by a cooling device 7. A continuous rolling method has been proposed in which the steel is divided into two coilers 1Oa and 10b and wound alternately. Here, the bonding device 4 includes:
Usually, a fixed type welding machine or the like is used. In addition, in the figure, 5 is an intermediate roller table, 6 is a run-out table, and 9 is an intermediate roller table.
a, 9b are coiler pinch rolls, 2 is seat bar 3a
, 3b shows the sheet passing direction (rolling direction).

With the above configuration, the work of joining the leading sheet bar 38 and the trailing sheet bar 3b is performed by stopping the sheet passing speed and using a clamping device (not shown) of the joining device 4 to join both sheet bars 3a.
, 3b had to be welded and joined after fixing the joint end portions, and it was not possible to prevent a decrease in production efficiency due to temporary interruption of rolling work for each joining work.

Therefore, in order to solve this problem and achieve complete continuous rolling, the present applicant first moved both sheet bars 3a and 3b mutually while running on their own in synchronization with the threading speed of the sheet bars 3a and 3b. We proposed a running welding device that can perform welding. As shown in FIG. 1, the main running welding device 104 has a schematic configuration in which a sheet bar 3a is conveyed on an intermediate roller table 5 in the direction of arrow Z.
, 3b, and a front traveling bogie 11 and a rear traveling bogie +1' that can run on their own at synchronous speeds, and although the self-propelled bogie is not shown in detail, the distance between the two traveling bogies can be freely adjusted by a pair of left and right coupling devices 12. Possibly connected. In addition, the self-propelled trolley 11.11'' has a pair of clamp frames 27a that face the tail end portion of the leading seat bar 38 and the head end portion of the trailing seat bar 3b in response to changes in the plate width of the seat bar 3, respectively. , 27b is equipped with a clamping device 15, 15° that can be clamped and fixed by a claw 34 and a presser rod 31 provided at the lower end of the self-propelled cart 11. On the trolley 11, the preceding seat bar 3
A joining machine 14 is installed to join the tail end edge of the seat bar 3a and the head end edge of the trailing seat bar 3b.

Therefore, while rolling, the running welding device +04 is allowed to run on its own in synchronization with the threading speed of the sheet bars 3a and 3b.
The joint end portions of both seat bars are clamped, and the joining device 12 is used to connect the two seat bars to each other in a pressed state so that there is no gap between the joint ends. , it is possible to join reliably. Therefore, there is no need to interrupt rolling for sheet bar joining work, and complete continuous rolling is possible.

<Problems to be Solved by the Invention> However, in order to run on the intermediate roller table 5, the running welding device 104 has a clamp device 15,
An appropriate gap is required between the lower edge of 15° and the upper surface of the table roller 5a.

Therefore, among the intermediate roller tables 5, at least
In the section where the running joining device 104 runs, the seat bar 3
A push-up device is required to push up the left and right end portions of the plate near the joining edges of the plates 15 and 3b onto the table roller 5a so that they can be supported by the upper surfaces of the clamp devices 15 and 15° claws 34. On the other hand, when the running welding device 104 is incorporated into an existing conventional batch-type hot rolling line to remodel it into an efficient continuous rolling line, for example, in rolling operations with a small production volume of special steel, etc. Since it is also required to perform conventional batch rolling without joining the sheet bars, it is necessary to switch the sheet bars in this case so that they can be passed over the existing intermediate roller table 5.

However, the details of the sheet bar pushing up device are not described in the description of the running joining device. Therefore, such a lifting device is
In this case, the push-up device must have the lower end face of the push-up device on the roller table 5.
It is necessary that the clamp frames 27a, 27b of the clamping device 15, 15' can freely travel on the upper surface of the sheet bar and move freely in the width direction of the sheet bar in accordance with changes in the width of the sheet bar.

However, such a lifting device not only has an extremely complicated structure, but also significantly increases the weight of the traveling carts 11, 11', and it is extremely difficult to synchronize the threading speed of the sheet bars 3a, 3b within a short time. There is a problem that it becomes an uneconomical device and has poor practicality.

The present invention was proposed in view of the current situation, and includes:
The sheet bars 3a and 3b on the intermediate roller table 5 are raised and lowered to clamp the clamping device 15 of the running welding device 104. +5
To provide a belt-like sheet material pushing device that is a rational running joining device that allows continuous rolling by smoothly transporting sheet bars 3a and 3b to each other and making it possible to easily switch to batch rolling. The purpose is to

Means for Solving the Problems> The configuration of the present invention to achieve the above object is to provide a continuous rolling line for strip-shaped plates, in which the rolling speed of the strip-shaped plates is synchronous with the rolling speed of the strip-shaped plates conveyed by a roller table. A self-propelled traveling trolley, a clamping device that clamps a tail end of a leading band-shaped plate and a head end of a trailing band-shaped plate, and a tail edge of the leading band-shaped plate and a head end of the trailing band-shaped plate. In the running welding apparatus, the roller table is divided in the axial direction between each table roller in at least a section slightly wider than the traveling section of the running welding apparatus. A plurality of press-up rollers of short key length are placed parallel to the axis of the table roller and with the center of the roller table (
These push-up rollers are arranged symmetrically with respect to the line center), and each row of these push-up rollers is individually connected to an elevating drive device that can be raised and lowered to push up the strip material on the roller table and move it to the running welding device. It is characterized by being mounted so that it can be carried into a clamping device.

By having the above-mentioned structure, specifically, the sheet bars 3a and 3b conveyed on the intermediate roller table 5 are pushed up, and the clamping device 15 of the running joining device 104 is moved. +5
The seat bars 3a, 3b can be carried onto the claws 34 of the clamp frames 27a, 27b.

Embodiment Example A detailed explanation will be given below with reference to the drawings. FIG. 1 is a front view of a main part of an embodiment of the present invention, including a longitudinal section at the center, and FIG. 2 is a view taken along the line A--A in FIG. 1.

As shown in the figure, the device of the present invention is arranged between each roller table 58 of the intermediate roller table 5, has the same axis parallel to the axis of the roller 5a, and is divided into multiple parts (in the illustrated case, into three parts) in the axial direction of the roller 5a. ), and is composed of a large number of groups of push-up rollers 40, each of which is individually supported to be rotatable and movable up and down, and main members of a plurality of elevating drive devices 41. These push-up rollers 40 groups are arranged symmetrically with respect to the roller table center (line center) 0 in at least a section slightly wider than the running section of the running splicing machine 104 among the rollers 5a group of the intermediate roller table 5. A plurality of blocks 4 of an appropriate length are created for each column (in the threading direction).
Each block is connected to a plurality of elevating drive devices 41 that can be moved up and down integrally. Furthermore, in the case of an odd number of these vertical rows of push-up roller groups 42, as shown in FIG. , in the case of an even number of columns, they are arranged symmetrically with respect to the line center 0. Further, each push-up roller 40 is individually supported by a bearing 44 at one end of the levers 43a and 43b, and is arranged such that the upper surface level at the lower limit position is at least below the upper surface of the table roller 5a. . The center portions of the levers C1a, 43b are rotatably supported by a bearing 47 on a beam 46 attached to the lower part of the frame 45 of the roller table 5, and the other ends are supported by a plurality of horizontal ronds 48 for each roller block 42 in each column. However, the tips of the levers 43b at one end of the 48 rows of rods extend further downward than the ends of the other levers 43a, and connect to the cylinder 50 attached to the cross beam 49 attached to the lower part of the beam 46. The sheet bars 3a and 3b on the table 5 are mounted so as to be able to be pushed up onto the claws 34 of the clamp device of the running joining device +04 by raising and lowering the group of push-up rollers 40.

Since the apparatus of the present invention has the above configuration, the leading and trailing sheet bars 3a, 3b are connected to the running joining device 104 during continuous rolling.
When joining, first the lifting drive device 41 of the push up device
to raise the group of push-up rollers 40 to the upper limit position and push up the sheet bars 3a, 3b onto the intermediate roller table 5 (on the pass line), and then operate the running joining device 104 according to the conventional procedure. It can be easily implemented by After the joining is completed, the push-up roller 40 is lowered to the lower limit position to stand by in preparation for the next joining operation or batch rolling. In addition, when welding with the running welding device 104, it is necessary to adjust the opening degree of the pair of clamp frames 27a and 27b of the clamping device 15, 15' in response to changes in board width. Narrow seat bar 3° shown in
When processing, the clamp frames 27a and 27b move toward the line center 0 side, but in this case, only the central row of push-up rollers 42 can be raised and lowered, so the rows of push-up rollers 42 in the inner and outer columns and Clamp frame 27
There is no need to worry about interference between a and 27b.

In the above example, the combination of a cylinder and a link mechanism has been described as the elevating drive mechanism of the push-up device, but the combination is not limited to this, and in short, the push-up rollers 40 installed between the table rollers 5a can be individually Any mechanism that can be raised and lowered in groups or in appropriate groups is acceptable.

<Effects of the Invention> As described above in detail, the device of the present invention has a space between each table roller of the intermediate roller table in the running section of the running welding device, which is divided in the axial direction of the roller. A plurality of push-up rollers that can be individually rotated are arranged in a column in the sheet bar passing direction, and the roller groups in each column are raised and lowered individually, thereby raising and lowering the sheet bar being conveyed on the 70-ra table. Because of this configuration, in the case of continuous rolling, the sheet bar can be pushed up by this push-up device and carried into the clamping device of the running joining device. On the other hand, in the case of batch rolling, the sheet bar can be passed over the roller table by lowering the push-up roller below the upper surface of the table roller (ie, the pass line). Further, since the push-up rollers can raise and lower only the necessary roller rows according to the width of the sheet bar, sheet bars of a wide range of widths can be joined by the running joining device. Furthermore, since the device of the present invention can be installed using the space of an existing intermediate roller table, when the device of the present invention is applied to a continuous rolling line that has an existing fixed joining machine, the device of the present invention can be installed using the space of an existing intermediate roller table. It has the advantage that there is no need for modification, and modification costs can be significantly reduced.

[Brief explanation of the drawing]

Fig. 1 is a front view showing a part of an embodiment of the present invention in cross section, Fig. 2 is a view taken along arrow A-A in Fig. 1, and Fig. 3 is a conventional continuous hot rolling line. FIG. In addition, in the figure, 3, 3a, 3b are strip-shaped plates (
(sheet bar), 5 is an intermediate roller table, 5a is a table roller, II, +1' is a traveling trolley, 14 is a joining machine,!
5 and 15 degrees are clamp devices, 27a and 27b are clamp frames, 34 is a claw, 40 is a push-up roller, 41 is a lifting drive device, 0 is an intermediate roller table center (line center)
It is.

Claims (1)

[Claims] In a continuous rolling line for strip-shaped plates, there is a running cart that can run on its own in synchronization with the rolling speed of the strip-shaped plates conveyed by a roller table. In the running welding device comprising a clamp device that clamps the head end portion, and a joining machine that joins the tail end edge of the preceding band-like plate material and the head end edge of the trailing band-like plate material, one of the roller tables is provided. , at least a plurality of push-up rollers with a short body length divided in the axial direction between each table roller in a section slightly wider than the running section of the running welding device,
The push-up rollers are arranged parallel to the axis of the table rollers and symmetrically with respect to the center of the roller table (line center), and each row of these push-up rollers is individually connected to a lifting drive device that can move up and down. . A device for pushing up a strip-like plate material of a running welding apparatus, characterized in that the strip-like plate material on the roller table is mounted so as to be able to be carried into a clamping device of the running welding apparatus.