JPS628884Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a material separation device for a cooling bed delivery line, in which the material from the rolling rolls is cut into pieces and transported one by one to the cooling bed using a run-in roller table, lifting plate, etc. When separating the leading material and the trailing material before transporting them to the cooling bed, care was taken to ensure that the materials were not damaged by the separator and were properly transported to the cooling bed without buckling. In particular, the required stopping distance on the lifting plate can be selected from various types by automatically selecting and opening the separator, and it is designed to be able to be efficiently and accurately selected based on the run-in roller table speed and other various conditions. It is something.

As is well known, rolled steel products (materials) are
After being cut into required lengths by a running shearer,
It is cooled in a cooling bed. When carrying the cut steel bars into the cooling bed, it is necessary to stop the steel bars so that the rear end of the steel bars is at a predetermined position when the steel bars are carried into the cooling bed. In order to stop the long steel, the conveyance route of the long steel is changed and the long steel comes to a natural stop.

That is, as shown in FIGS. 10 and 11, a vertically movable lifter 103 is provided between inclined rollers 102 of a run-in table 101 of a cooling bed 100, and a bar 104 conveyed on the inclined rollers 102 is provided.
The lifter 103 is lowered, and the running bar 104 is moved from above the inclined roller 102 to the lifter 103.
When the bar 104 is rolled upward and then the lifter 103 is raised, the bar 104 comes to a natural stop due to friction with the lifter 103.

In this way, in order to stop the steel bars at a predetermined position and transfer them to the cooling bed, it is necessary to separate the steel bars that are continuously cut. In order to perform this separation, the cut steel bar is transported by inclined rollers driven at a transport speed set slightly higher than the rolling speed. Thus, a gap is formed between the preceding rolled steel bar and the following rolled material, and by utilizing this gap, the above-mentioned lifter 103 is activated to transfer the bar to the cooling bed 100.

That is, the lifter 103 has the role of braking the bar steel 104 and separating it from the subsequent rolled material. Conventionally, the lifter 103 is placed just before the cooling bed 100, as shown in FIG. 10, in order to ensure separation. The first lifter 105 is a wedge-shaped lifter and has the function of a separator.

Therefore, this wedge-shaped lifter (separator) 10
In many cases, the steel bars 104 collide with each other and the steel bars 104 are damaged, or the steel bars 104 as a whole are subject to buckling.When this damage occurs, not only does the value of the product decrease, but the steel bars 104 are also subject to buckling. Both the loading and transport to the cooling bed were not appropriate, and solutions for these problems were needed.

Furthermore, in the conventional system, as shown in FIG. 10, the separator 105 is placed just in front of the cooling bed 100, so it was not possible to cope with higher speeds.

That is, the braking distance S by the lifter 103 is S
= V ² /2 μg (V is the bar conveying speed, μ is the friction coefficient, and g is the gravity speed), but the separator 105
Since the set position is fixed, the entire length of the lifter 103 is constant, and the braking distance S cannot be changed. Therefore, there is a limit to increasing the conveyance speed V, which is restricted by the braking distance S. In this way, in the conventional device, the separator 105 that has the function of changing the conveyance path and the lifter 103 that has the function of braking perform the same operation even though their functions are different, and the separator 105 has the function of braking. is provided at the tip of the lifter 103, causing the various problems mentioned above.

This idea was devised in view of these facts, and its purpose is to place separators on the lifting plate as a normally closed type so that they move up and down together, and to calculate the required number of separators from the cooling bed inlet standard. The above problem has been solved by using a method in which the separator is opened by lifting and holding the separator, and in addition, the separator opening range can be adjusted at all times regardless of the rolling speed by taking into account the conveyance speed of the material (long steel) and other conditions. The purpose of the present invention is to provide a material separation device for a cooling bed inlet line that can be properly controlled so that the ends are aligned and stopped at a certain position.Therefore, the feature here is that the material L is cooled at a higher speed than the rolling speed. At the lowering position of the A-lifting plate 4, which is vertically movably arranged along one side of the inclined shaft type run-in roller table 3 that is conveyed to the floor 7 side, the material L to be conveyed on the table 3 is A-lifted. In a material separation device for a cooling bed delivery line, the material L can be freely transferred onto the upper surface of the A lifting plate 4, and the material L is prevented from entering by the side surface of the A lifting plate 4 in the raised position. A large number of separators 6 of a predetermined length are arranged in a row along the table 3 above the run-in roller table side end, and each separator 6 is separated from the table 3 at the lowered position of the A lifting plate 4. In order to prevent the conveyed material L from entering, the separators 6 are provided in contact with the upper surface of the plate 4 so as to be able to rise and fall freely in synchronization with the plate 4, and each separator 6 is provided with a In order to form a gap between the lower end of the separator 6 and the upper surface of the plate 4 through which the conveyed material L can be transferred, a selection release holding means 15 is provided for holding each separator 6 independently in the raised position. It is in the point where it is.

This invention will be explained below with reference to the illustrated embodiments.

Fig. 1 shows a plan layout of the cooling bed inlet line according to the present invention and the state of material separation. 2 is placed.

7 is a cooling bed, and the cooling bed 7 and the shear 2
They are connected by a run-in roller table 3. The run-in roller table 3 is disposed passing through the side of the cooling bed 7 to its rear end, and the roller table 3 is provided with inclined rollers that are inclined downward toward the cooling bed 7 side.

In the run-in roller table 3, an A lifting plate 4 is arranged below the inclined roller (on the cooling bed side). Further, a B lifting plate 5 is arranged between the A lifting plate 4 and the cooling bed 7.

The A-lifting plate 4 is arranged from a considerable front side of the cooling bed 7 (on the shear 2 side) to approximately the end of the run-in roller table 3. The B lifting plate 5 is arranged from the vicinity of the cooling bed 7 to approximately the end of the run-in roller table 3.

A separator 6 is provided on the A lifting plate 4 extending from the cooling bed inlet reference 8 set on the inlet side of the cooling bed 7 to the leading end of the A lifting plate 4 (on the shear 2 side). .

Details of the portion where the A lifting plate 4 is arranged are shown in FIGS. 3 to 5. still,
FIG. 5 is a sectional view corresponding to the - line in FIG. 1. B
Details of the portion where the lifting plate 5 and the A lifting plate 4 are arranged side by side are shown in FIGS. 6 to 8. Incidentally, FIG. 8 is a sectional view corresponding to the - line in FIG. 1.

In FIGS. 3 to 8, reference numeral 9 denotes a table frame, which is composed of members arranged in parallel in the longitudinal direction.
1 and a second fixed guide plate 12 are fixed such that their tops are inclined in a predetermined direction. The run-in roller table 3 for conveying the material L is arranged on the vertex side of the first fixed guide plate 11.
A large number of lifting plates 4 are arranged in the longitudinal direction, while the first and second fixed guide plates 1
A B lifting plate 5 is interposed between 1 and 12 so as to be movable up and down. Both lifting plates 4 and 5 are raised and lowered by a lifting lever 13 having a lower fixed point as a fulcrum, a connecting rod 14, and a separate cylinder. That is, in FIG. 4, the connecting rod 14 is connected by a cylinder (not shown).
moves in the direction of arrow a, the lifting lever 13 rotates in the direction of arrow b, and the A lifting plate 4 rises in the direction of arrow C. The illustrated position of the A lifting plate 4 in FIG. 5 is the lowered position where it can freely accept the material L from the run-in roller table 3 (however, in the same figure, the separator 6 prevents its acceptance). . After receiving the material L, when it rises, the first fixed guide plate 11
Material L can be transferred onto the top. These relationships are the same for the B lifting plate 5 as well.

In such a device, the separator 6 is not a continuous, integrated long piece, but a large number of single pieces of a predetermined length arranged in a row, and SP No. 1, No. 2, They are arranged as No. 3... and are provided corresponding to each A lifting plate 4 up to SP No. 27. That is, the separators 6 are arranged along the A-lifting plate 4 and are formed as a substantially inverted L-shaped frame body, and the lower ends of the separators 6 are arranged on the A-lifting plate 4 toward each run-in roller table 3 side. The upper surface of the plate 4 is in contact with the upper surface of the plate 4 so as to be able to move toward and away from the upper surface of the plate 4.

Each separator 6 is provided in contact with the upper surface of the A-lifting plate 4 and movable up and down in synchronization with the plate 4 in order to prevent the transfer material L from the table 3 at the lowered position of the A-lifting plate 4. It is being Furthermore, each separator 6 is arranged independently so as to form a space between the lower end of the separator 6 and the upper surface of the plate 4 through which the conveyed material L can be transferred when the A lifting plate 4 is lowered. A selection opening holding means 15 is provided for holding the opening in the raised position.

The selection release holding means 15 includes a rotatably supported clutch shaft 16 and a swingable response lever 19 which is fixed to the clutch shaft 16 and pivotally supported by the separator 6 to move the separator 6 up and down.
, a driving means for rotating the clutch shaft 16, and a clutch disengaging means 18 for connecting the driving means and the clutch shaft 16 so as to be engageable and disconnectable.

The driving means includes a clutch shaft rotating lever 17 fitted on the clutch shaft 16 so as to be relatively rotatable, a tuning rod 21 pivotally connected to the lever 17, and a cylinder 20 connected to the tuning rod 21. It is configured. The clutch shaft 16 and the clutch shaft rotation lever 17 are connected by a clutch disconnection means 18 so as to be able to be engaged and disengaged.

As shown in FIG. 3, this clutch disconnection means 18 is composed of a pawl clutch, and when the A lifting plate 4 is in the raised position and the clutch shaft rotation lever 17 is in the lowered position, the clutch shaft 16 and the clutch rotation lever It is possible to combine with 17. After this connection, the separator 6 is raised by the stroke of the cylinder 20 from the raised position of the A lifting plate 4.

That is, if there is no command to open the separator, there is no input operation of the air cylinder type clutch disconnection means 18, and the corresponding separators 6 are raised and lowered together with the A lifting plates 4 by the free swinging of the response levers 19. On the other hand, the clutch disconnecting means 1 which received the command
8 is engaged with the clutch shaft rotating lever 17 side, and the rising holding cylinder 20 and the tuning rod 21 are the third,
By operating in the direction of arrow d in FIG. 4, a predetermined response lever 19 rotates in the direction of arrow e, and independently holds the separator 6 up. Such a separator opening command is issued remotely from an operator's cab or the like, or by a system that is linked to a speed setting device (not shown) at the outlet of the rolling mill. It goes without saying that the raising of the separator 6 is timed with the vertical movement of the A lifting plate 4.

Next, the operation of the embodiment of the present invention having the above configuration will be explained as follows.
This will be explained based on FIGS. 2 and 9. (still,
Figure 9a is a sectional view corresponding to the line in Figure 1, Figure 9b
is a sectional view corresponding to the line in FIG. 1, and a and b in FIG. ) First, among the separators 6 arranged in a row, the clutch disconnecting means 1 of those within a predetermined range from the inlet reference 8
8 to ON, move and hold the separator 6 in this range upward, and connect the lower end of the separator 6 and A.
The upper surfaces of the lifting plates 4 are left open (the state shown in FIG. 9b). The remaining separators 6 on the rolling mill side are automatically brought into contact with the A lifting plates 4 by cutting off their clutch disconnecting means 18 and raised and lowered together with them (the state shown in FIG. 9a).

By controlling the separator 6 as described above, the material L conveyed on the run-in roller table 3 is moved to It is prevented from moving onto the lifting plate 4, and the separator 6 is moved onto the upper surface of the A lifting plate 4 from the range where the separator 6 is held in the raised position. The transferred material L is frictionally braked, stops at a predetermined position, and is carried into the cooling bed 7.

The above situation is illustrated in the lower diagram of FIG. That is, the material L rolled by the rolling mill 1 is
The sheet moves on the run-in roller table 3 at a rolling speed of V ₀ until it is cut by the shear 2 (FIGS. 1 and 9). At this time, the A lifting plate 4 is in the raised position (FIG. 9).

Next, as shown in _FIG .
The material L 2 is transported at a speed approximately 5% higher than the finish rolling speed V ₀ , and is conveyed while creating a distance between the front and rear materials L ₂ which is rolling at the rolling speed V ₀ . Vr shown in the figure is the conveyance speed by the table 3, and Vr=α×V ₀
(α is the lead rate).

When the tail end of the preceding material L ₁ reaches the point, A
The lifting plate 4 begins to descend from the ascending position, and the preceding material _L1 flows into the upper surface of the A plate 4 from the gap between it and the separator 6 created by the lowering of the A plate 4 (FIGS. 1 and 9).

When the preceding material L ₁ is completely received on the A lifting plate 4, the A lifting plate 4 starts to rise, and the preceding material L ₁ is transferred onto the B lifting plate 5 via the first fixed guide plate 11. (Figure 9).

At this time, the subsequent material L ₂ is being conveyed, but A
The upward position of the lifting plate 4 prevents the transfer.

Furthermore, as the B lifting plate 5 rises, the preceding material L ₁ is transferred onto the second fixed guide plate 12, and the traveling of the preceding material L ₁ is stopped around this point (FIGS. 1 and 9). Then, the subsequent material L ₂ is transferred onto the A lifting plate 4 as it descends.

Preceding material on the second fixed guide plate 12
L ₁ is taken into the cooling bed 7 by the cooling bed 7 transfer means.

Furthermore, the state where the preceding material _L1 stops running is A.
Whether it is on the lifting plate 4, the B lifting plate 5, or the first and second fixed guide plates 11 and 12 depends on various conditions.

Next, the above effect will be explained using specific numerical values.

First, the loading position Sa at which the material L is loaded into the cooling bed 7 is set in advance. This carry-in position is determined by the distance Sa between the tail end of the material L and the cooling bed inlet reference 8. In this example, Sa=2.5m.

Next, the running material L is moved to the A lifting plate 4.
The braking distance Sb from the start of sliding contact to the stop due to frictional braking is determined by the following formula.

Sb=Vr ² /2gμ Vr; table conveyance speed (Vr=Voxα) μ; friction coefficient g; gravitational acceleration The above braking distance Sb means the braking starting point for the material L, and this braking starting point is
It represents the rolling timing of the material L, that is, the length of the open area of the separator 6.

Therefore, the open area of the separator 6 (the area held in the raised position) is (Sb-
Sa). A separator 6 is placed in this open area.
In other words, the number of separators 6 from the entrance reference 8 to which the opening command should be issued is determined. In this case, the lengths of the lifting plate 4 and the separator 6 correspond one-to-one, and if the length of each is 2.4 m, then SPNo.=Sb-Sa/2.4, but in the above formula, Since there are fractions, a constant term is added to allow rounding down, and the following formula is used.

SPNo.=Sb-Sa/2.4+0.88 = ^Vr2 /4.8μg-0.42Sa+0.88 (pieces), and the number after the decimal point is rounded down to the number of open pieces (range).

For example, if we plan to roll a product size φ25, the rolling speed V ₀ is 12 m/sec, the run-in roller table circumferential speed Vr is 12.6 m/sec, and the position is Sa = 2.5 m from the cooling bed inlet. Under the condition that the tail end of the product is stopped, if the friction coefficient μ = 0.25, then SP No. = 12.6 ² /4.8 x 0.25 x 9.8 -0.42 x 2.5 + 0.88 = 13.33, and SP No. It is calculated that it is sufficient to open the separators 6 on the lifting plates up to 13.

According to the present invention, in a line in which the material from the rolling rolls is cut into parts and transported one by one to the cooling bed by a run-in roller table, a lifting plate, etc., the preceding material and the following material are separated from the cooling bed. When separating the material during transport, not only can the material be properly transported to the cooling bed without being damaged or buckled by the separator, but the separator can be automatically selected to determine the required stopping distance on the lifting plate. Various matching amounts can be achieved by opening, which can be efficiently and accurately selected based on the run-in roller table speed and other conditions.

[Brief explanation of the drawing]

Fig. 1 is a schematic explanatory diagram showing the relationship between the opening procedure of the separator and the product material, stop position, etc. according to this invention, Fig. 2 is an explanatory diagram of the operation of the separator, and Fig. 3 is a plan view of the front stage of the conveying device. Figure 4 is a side view of the same, Figure 5 is a sectional view taken along the - line in Figure 1 or Figure 4, and Figure 6 is a side view of the same.
The figure is a plan view of the rear stage of the conveyance device, FIG. 7 is a side view thereof, FIG. 8 is a sectional view taken along the line -- of FIG. 1 or FIG. 11 are explanatory diagrams of the operation of the conventional example. 3... Run-in roller table, 4... A lifting plate, 6... Separator, 7... Cooling bed, 1
5... Selection release holding means, 16... Clutch shaft, 17
...Clutch shaft rotation lever, 18...Clutch disconnection means, 19...Response lever, 20...Cylinder, 21...
Attuned rod.

Claims (1)

[Claims for Utility Model Registration] 1. An A-lift which is arranged vertically movably along one side of the inclined shaft type run-in roller table 3, which conveys the material L to the cooling bed 7 side at a higher speed than the rolling speed. At the lowered position of the lifting plate 4, the material L to be transported on the table 3 can be freely transferred onto the upper surface of the A lifting plate 4, and at the raised position, the material L can be transferred onto the upper surface of the A lifting plate 4.
In a material separation device for a cooling bed inlet line configured to prevent the transfer of water, a large number of separators 6 of a predetermined length are arranged above the end of the A lifting plate 4 on the run-in roller table side along the table 3. The separators 6 are arranged in a line, and the separators 6 are brought into contact with the upper surface of the A lifting plate 4 and synchronized with the plate 4 in order to prevent the conveyed material L from moving in from the table 3 at the lowered position of the A lifting plate 4. Each of the separators 6 is provided with a space between the lower end of the separator 6 and the upper surface of the plate 4 so that the conveyed material L can be transferred when the A lifting plate 4 is lowered. A material separation device for a cooling bed delivery line, characterized in that a selective release holding means 15 is provided to independently hold each separator 6 in a raised position. 2. The selection release holding means 15 includes a rotatably supported clutch shaft 16, and a swingable response lever 19 that is fixed to the clutch shaft 16 and pivotally supported by the separator 6 to move the separator 6 up and down. , drive means 17, 20, 21 for rotating the clutch shaft 16, and clutch disconnection means 18 for connecting the drive means and the clutch shaft 16 in a freely engageable/disconnectable manner. Apparatus according to claim 1.