JP2011178552A - Bar steel end material sorting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bar steel end material sorting device accurately sorting long materials from short materials. <P>SOLUTION: The bar steel end material sorting device includes an up-and-down movable roll 20 arranged movably up and down a predetermined distance apart from a shearing position X of a shear 6, and an upper roll 23 for abutting on the upper side of the up-and-down movable roll 20 at its move-up position. The up-and-down movable roll 20 is moved up and end materials b are held between the up-and-down movable roll 20 and the upper roll 23 and reversely carried. In this way, the long materials 1b are only reversely carried and the short materials sb are left. The long materials 1b being moved up are not caught on the short materials sb and reversely carried along with the short materials sb. Thus, the long materials 1b are accurately sorted from the short materials sb. There is no need of manually sorting the long materials 1b from the short materials sb, resulting in improved working efficiency. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to a steel bar end material sorting apparatus. More specifically, the present invention relates to a steel bar end length material sorting apparatus for sorting an end length material formed after shearing a bar steel with a cold shear into a long material and a short material in a steel bar rolling facility.

As shown in FIG. 6, in the steel bar rolling facility, the steel bar rolled by the rolling mill 1 travels on the roller table 2 and is sheared by the cooling bed shear 3 with a length of several tens to 100 m. The sheared steel bar is transferred to the cooling bed 4 and cooled while moving on the cooling bed 4 to the roller table 5 side. The steel bar cooled in the cooling bed 4 is transposed onto the roller table 5, transported in the direction of the cold shear 6 by the roller table 5, and sheared to a fixed size by several meters at the cold shear 6 (see Non-Patent Document 1). .
When the steel bar is sheared by the cold shear 6, a half-length steel bar (end length material) remains at the end. However, the dimensions of the end length material have long and short variations.
In the steelworks, long end materials (long materials) are sold separately, and short end materials (short materials) are scrapped. Therefore, it is necessary to collect the long material and the short material separately.

As shown in FIG. 7, conventionally, the sorting of the long material lb and the short material sb is performed by rotating the rolls 110, 120, and 130 (not shown for the fourth and subsequent rolls) adjacent to the cold shear 6 among the rolls of the roller table 5. Attempts have been made to do so by controlling.
When the steel bar b is sheared, the steel bar b is conveyed on the roller table 5 in the direction of the arrow L and is sheared to a fixed size by the cold shear 6. Therefore, the end length material b after shearing is in a state in which several tens of pieces are arranged on the roller table 5 with one end aligned at the shear position X of the cold shear 6 in a state where the long material lb and the short material sb are mixed. .
In this state, the rotation of the roll 110 closest to the cold shear 6 is stopped, and the rolls 120 and 130 are rotated in the reverse direction. Then, the long material lb whose dimension is longer than the distance l from the shearing position X to the roll 120 is fed back in the direction of the arrow R by the rolls 120 and 130, but the short material sb less than the length l remains as it is. become. In this way, in principle, the long material lb and the short material sb can be sorted.

  However, in practice, the node of the long material lb, the burr of the shearing surface, etc. are caught on the short material sb, and the long material lb pulls back the short material sb and feeds back, so that the long material lb and the short material sb are reliably sorted Could not be done. Therefore, until now, the long material lb and the short material sb have been sorted by hand, and the work efficiency has been very poor.

“Handbook of Mechanical Engineering C1 Industrial Machinery and Equipment” The Japan Society of Mechanical Engineers, November 25, 1988, p.C1-123-C1-124

  In view of the above circumstances, an object of the present invention is to provide a steel bar end length material sorting apparatus that can reliably sort long materials and short materials.

A steel bar end material sorting apparatus according to a first aspect of the present invention is a roll that forms a part of a roller table that transports steel bars to a shear, and is disposed at a predetermined distance from the shearing position of the shear and is capable of moving up and down. It is characterized by comprising a roll and an upper roll that abuts from above the lifting roll at the raised position of the lifting roll.
In the first invention, the steel bar end length material sorting apparatus according to the second invention is characterized by comprising a dispensing device for dispensing the short material from the roller table between the shearing position and the lifting roll.
In the first or second invention, the steel bar edge material sorting apparatus according to the third invention is characterized in that a horizontal guide for keeping the level of the long material is provided before and after the roller table in the traveling direction of the upper roll. To do.
The steel bar end length material sorting device according to a fourth aspect of the present invention is characterized in that, in the first, second or third aspect, a groove into which a long material is fitted is formed in a circumferential direction on the outer peripheral surface of the upper roll.
According to a fifth aspect of the present invention, there is provided the steel bar edge material sorting apparatus according to the second aspect, wherein an upper plate is provided in contact with the raising / lowering roll at an elevated position instead of the upper roll.

According to the first invention, the elevating roll is raised, the end roll material is sandwiched between the elevating roll and the upper roll, and the long roll having a dimension longer than the distance from the shearing position to the elevating roll is reversely fed. Short material can be left. At this time, since the long material is lifted from the roller table by the lifting roll, the long material is not caught by the short material, and the long material does not pull back the reverse material, so the long material and the short material are sorted. It can be done reliably. Therefore, it is not necessary to sort long materials and short materials by human hands, and work efficiency is improved.
According to the second invention, the short material can be recovered by paying out the short material from the roller table by the dispensing device. In addition, if the short material is dispensed while the long material is lifted from the roller table by the lifting roll, it will not be caught by the short material when it is fed forward or backward. Can be performed reliably.
According to the third aspect of the invention, the horizontal guide can maintain the level of the raised long material and raise the entire long material, so that the tip of the long material does not contact the short material on the roller table, and the long material Does not carry back the short material and reverse feed.
According to the fourth aspect of the invention, when the long material is fitted into the groove of the upper roll, the lateral vibration of the long material can be suppressed and the long material can be moved straight.
According to the fifth invention, the lifting roll rises, and the end material is sandwiched between the lifting roll and the upper plate, so that only the long material having a dimension longer than the distance from the shearing position to the lifting roll is raised, and the short material is a roller. Can be left on the table. If the elevating roll is lowered after the short material is dispensed from the roller table by the dispensing device, the long material can be fed forward or backward, and the long material and the short material can be reliably sorted.

It is the (A) top view and (B) front view of the steel bar edge material sorting device A concerning a 1st embodiment of the present invention. It is an II line arrow directional view in FIG. It is explanatory drawing of the sorting method of the pattern A, (A) is the state which raised the raising / lowering roll 20, (B) is a figure of the state which sent back the long material lb back. It is explanatory drawing of the sorting method of the pattern B, (A) is the state which raised the raising / lowering roll 20, (B) is the state in which only the long material lb remained after the short material la was paid out from on the roller table 5. FIG. It is a front view of the steel bar end length material sorting device B concerning a 2nd embodiment of the present invention. It is explanatory drawing of a steel bar rolling facility. It is the (A) top view and (B) front view of the cold shear 6 and the roller table 5 of a prior art.

Next, an embodiment of the present invention will be described with reference to the drawings.
(First embodiment)
As shown in FIG. 1, the steel bar end length material sorting apparatus A according to the first embodiment of the present invention is installed in a roller table 5 that transports steel bars to a cold shear 6 that shears steel bars to a fixed size in a steel bar rolling facility. Is done.
The roller table 5 has a first roll 10, a second roll 20, a third roll 30,... (Not shown after the fourth roll) and a large number of rolls from the cold shear 6 side. Motors 11, 21, 31 for rotating the rolls forward and backward are attached. The rolls 10, 20, and 30 are rotated by driving the motors 11, 21, 31, and the steel bar b on the roller table 5 can be conveyed.

  In the present embodiment, the second roll 20 is an elevating roll 20, and a hydraulic cylinder 22 that elevates the elevating roll 20 is provided. The hydraulic cylinder 22 is erected on the floor surface below the lifting roll 20, and the rod is connected to the base of the lifting roll 20. Therefore, when the hydraulic cylinder 22 is extended, the lifting roll 20 is raised, and when the hydraulic cylinder 22 is contracted, the lifting roll 20 is lowered.

  In addition, as long as the raising / lowering roll 20 can be raised / lowered, it can replace with the hydraulic cylinder 22, and can employ | adopt other drive devices, such as what provided the piston and crank mechanism in the air cylinder and the motor.

  An upper roll 23 is rotatably fixed above the lifting roll 20 with a predetermined gap from the upper surface of the roller table 5. The upper roll 23 is a roll having the same length as the elevating roll 20 and is disposed at the same position as the elevating roll 20 in a plan view. Therefore, when the lifting roll 20 is in the raised position, the upper roll 23 comes into contact with the lifting roll 20 from above.

  The interval between the upper surface of the roller table 5 and the upper roll 23 is such that when the long material lb is raised as described later, the entire long material lb rises and does not contact the short material sb on the roller table 5. It is necessary to provide it. When the long material lb is raised, it is bent downward by its own weight and the tip is slightly lowered, but it is necessary that the tip of the long material lb is not in contact with the short material sb.

Two plate-like horizontal guides 24 having the same length as the upper roll 23 are provided on the front and rear of the roller table 5 in the upper roll 23 (left and right in FIG. 1). The horizontal guide 24 is provided at a height that forms a horizontal plane between the bottom surface of the horizontal guide 24 and the upper roll 23.
It is preferable to bend the horizontal guide 24 in and out, that is, the edge away from the upper roll 23 upward, because the long material lb can be prevented from being caught by the edge.

  A large number of circumferential V-shaped grooves are formed on the outer peripheral surface of the upper roll 23. When the long material lb is raised as described later, the long material lb is fitted into the V-shaped groove.

  As shown in FIG. 2, a payout plate 40 that can traverse the roller table 5 is provided between the shear position X of the cold shear 6 and the lifting roll 20. The payout plate 40 is a plate that is long in the direction of travel of the roller table 5 and is set up vertically. The payout plate 40 traverses the roller table 5 from end to end (from the right end to the left end in FIG. 2) by the driving device 41, and pays out the short material sb from the side of the roller table 5 (left end in FIG. 2). Is possible.

  A bucket chute 42 that guides the short material sb downward is connected to a side portion of the roller table 5 from which the short material sb is dispensed, and a bucket 43 that stores the short material sb is placed at the tip of the bucket chute 42. .

  Next, a method for sorting the long material lb and the short material sb using the steel bar end length material sorting apparatus A will be described. Since the sorting method includes the pattern A and the pattern B due to the difference in operation of the steel bar end material sorting apparatus A, the sorting method will be described in the following order.

(Pattern A)
(1) Shearing of Steel Bar As shown in FIG. 1, when steel bar b is sheared, steel bar b is conveyed on roller table 5 in the direction of arrow L and is sheared to a constant size by cold shear 6. Therefore, the end length material b after shearing is in a state in which several tens of pieces are arranged on the roller table 5 with one end aligned at the shear position X of the cold shear 6 in a state where the long material lb and the short material sb are mixed. .

(2) Raising / lowering roll As shown in FIG. 3 (A), the raising / lowering roll 20 is raised in the state in which the edge material b was arranged on the roller table 5. As shown in FIG. If it does so, the long material lb whose dimension is longer than the distance l from the shearing position X to the raising / lowering roll 20 will raise, and will be in the state pinched by the raising / lowering roll 20 and the upper roll 23. FIG. At this time, the long material lb can be kept horizontal by being pressed by the horizontal guide 24, and the entire long material lb can be raised. Further, the long material lb is fitted into the V-shaped groove of the upper roll 23, and the lateral vibration is suppressed.
On the other hand, the short material sb less than the length l remains on the roller table 5 as it is.

(3) Reverse feed of long material Next, the elevating roll 20 is reversed and the long material lb sandwiched between the upper roll 23 is reversely fed in the direction of arrow R. At this time, since the long material lb is fitted in the V-shaped groove of the upper roll 23 and the lateral vibration is suppressed, the long material lb can be moved straight and can be transferred to the roller table 5 after the third roll 30. it can. Then, the long material lb is fed back on the roller table 5 by the reverse rotation of the rolls after the third roll 30.
Thereafter, the long material lb is paid out to the bucket by a payout device (not shown) and collected.

  Here, since the long material lb is raised from the roller table 5 by the lifting roll 20, the long material lb is not caught by the short material sb, and the long material lb does not reversely feed the short material sb. The sorting of lb and short material sb can be performed reliably.

(4) Recovery of short material Finally, the payout plate 40 is traversed on the roller table 5, and the short material sb is discharged from the side of the roller table 5 (see FIG. 2). The short material sb paid out from the side portion of the roller table 5 passes through the bucket chute 42 and is collected in the bucket 43.

  As described above, since it is possible to reliably sort the long material lb and the short material sb, it is not necessary to sort the long material lb and the short material sb by human hands, and the working efficiency is improved.

(Pattern B)
(1) Bar Steel Shear Similar to Step (1) of Pattern A, as shown in FIG. 1, the end length material b is in a state where the long material lb and the short material sb are mixed, and the shear position X of the cold shear 6 10 are aligned on the roller table 5 with one end thereof aligned.

(2) Raising / lowering roll As shown in FIG. 4 (A), the raising / lowering roll 20 is raised in the state in which the edge material b was arranged on the roller table 5. As shown in FIG. If it does so, the long material lb whose dimension is longer than the distance l from the shearing position X to the raising / lowering roll 20 will raise, and will be in the state pinched by the raising / lowering roll 20 and the upper roll 23. FIG. At this time, the long material lb can be kept horizontal by being pressed by the horizontal guide 24, and the entire long material lb can be raised. Further, the long material lb is fitted into the V-shaped groove of the upper roll 23, and the lateral vibration is suppressed.
On the other hand, the short material sb less than the length l remains on the roller table 5 as it is.

(3) Recovery of short material Next, the payout plate 40 is traversed on the roller table 5, and the short material sb is discharged from the side of the roller table 5 (see FIG. 2). The short material sb paid out from the side portion of the roller table 5 passes through the bucket chute 42 and is collected in the bucket 43.
At this time, as shown in FIG. 4A, the long material lb is located above the short material sb. Therefore, the payout plate 40 must pass under the long material lb and cross the roller table 5. Therefore, the height of the payout plate 40 needs to be a height that does not contact the long material lb.

(4) Conveyance of long material Finally, as shown in FIG. 4 (B), after the elevating roll 20 is lowered and the long material lb is returned onto the roller table 5, the rolls 10, 20, 30,... Are reversed and the long material lb is fed back in the direction of arrow R. Alternatively, the long material lb can be fed forward by rotating the rolls 10, 20, 30,.
Thereafter, the long material lb is paid out to the bucket by a payout device (not shown) and collected.

  Here, since the short material sb has already been paid out in step (3), the long material lb is not caught by the short material sb when the long material lb is fed forward or backward, and the long material lb and the short material sb are not caught. Sorting can be performed reliably.

  As described above, since it is possible to reliably sort the long material lb and the short material sb, it is not necessary to sort the long material lb and the short material sb by human hands, and the working efficiency is improved.

(Second Embodiment)
As shown in FIG. 5, the steel bar end length material sorting apparatus B according to the second embodiment of the present invention is replaced with the upper roll 23 and the horizontal guide 24 in the bar steel end length material sorting apparatus A according to the first embodiment. An upper plate 25 is provided. Since the rest of the configuration is the same as in the first embodiment, the same reference numerals are assigned to the same members, and descriptions thereof are omitted.
In the case of performing the sorting operation in the pattern B, in the step (2) of raising the long material lb, there is no need to reverse the elevating roll 20 to reversely feed the long material lb, and the portion where the long material lb contacts is a plate. Since there is no problem with the shape, the steel bar end length material sorting apparatus B of the present embodiment can be employed.

  The upper plate 25 is a horizontal plate-like member having the same length as the lifting roll 20. It is preferable to make the roller table 5 wider in the traveling direction because the same effect as the horizontal guide 24 in the first embodiment can be obtained.

  Also in the present embodiment, since the sorting operation of the pattern B can be performed, the sorting of the long material lb and the short material sb can be reliably performed. Therefore, it is not necessary to sort the long material lb and the short material sb by human hands, and the work efficiency is improved.

(Other embodiments)
In the above embodiment, the motor 21 is attached to the elevating roll 20 to enable normal / reverse rotation. However, an embodiment in which the motor is attached to either the elevating roll 20 or the upper roll 23 or both of them may be employed. When attaching a motor to both the raising / lowering roll 20 and the upper roll 23, it is preferable to be able to reversely feed the long material lb in synchronization.

  Moreover, in the said embodiment, although the horizontal guide 24 was plate-shaped, it may replace with this and may be a rotatable roll.

  As described above, the long material lb and the short material sb are sorted according to the distance l from the shearing position X to the lifting roll 20. Therefore, the threshold of the long material lb and the short material sb can be changed by changing the distance l using rolls at other positions such as the first roll 10 and the third roll 30 as elevating rolls.

  Two or more rolls may be lift rolls. In this case, if the raising / lowering roll to raise is selected, the threshold of the long material lb and the short material sb can be changed freely. Further, it is preferable that the adjacent lifting rolls are moved up and down in synchronization because the long material lb can be supported by two or more lifting rolls.

DESCRIPTION OF SYMBOLS 5 Roller table 6 Cold shear 10 1st roll 20 Elevating roll 22 Hydraulic cylinder 23 Upper roll 24 Horizontal guide 25 Upper plate 30 3rd roll 40 Discharge board A, B Bar steel end material sorter b End material lb Long material sb Short material

Claims (5)

A roll that forms part of a roller table that conveys bar steel to the shear, and is disposed at a position away from the shearing position of the shear by a predetermined distance, and can be lifted and lowered.
A steel bar end length material sorting apparatus comprising: an upper roll that comes into contact with an upper position of the lifting roll at the raised position of the lifting roll. The steel bar end length material sorting apparatus according to claim 1, further comprising a dispensing device that dispenses a short material from the roller table between the shearing position and the lifting roll. The steel bar end length material sorting apparatus according to claim 1 or 2, wherein a horizontal guide for maintaining the level of the long material is provided before and after the moving direction of the roller table of the upper roll. 4. The steel bar end length material sorting apparatus according to claim 1, wherein a groove into which a long material is fitted is formed in a circumferential direction on an outer peripheral surface of the upper roll. Instead of the upper roll,
The steel bar end length material sorting apparatus according to claim 2, further comprising an upper plate that comes into contact with the lifting roll at a rising position from above.

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