JPH06115674A - Steel-bar material sorting device - Google Patents

Abstract

PURPOSE:To provide a steel-bar sorting device, which can sort steel-bar material accurately even in the case where the diameter of the steel-bar material is narrowed and the number of steel-bar material is increased. CONSTITUTION:A steel-bar sorting device is provided with a first carrying device 2 for arranging multiple steel-bar material 1 in parallel with each other and for carrying them, a tip aligning device 3 for aligning the tips of multiple steel-bar material on the carrying device 2 into lateral one line, a second carrying device 4 arranged near the tip aligning device 3 and for carrying the steel- bar material on the carrying device 2 to the rear end side thereof, and a third carrying device 5 arranged in the rear end side of the steel-bar material 1 at a position separated from the second carrying device 4 at a predetermined distance and for carrying the steel-bar material 1, which is sent from the second carrying device 4, to the rear end thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar steel sorting apparatus in a cutting line of a bar steel rolling facility.

[0002]

2. Description of the Related Art A rolled steel bar is cut into a predetermined size by a cutting machine to obtain a standard length product. Since the cutting machine cuts a large number of steel bars at the same time, at the end of the cutting, a material that is less than the product length (hereinafter referred to as "random material")
Materials with a product length or more (hereinafter referred to as "long material") are mixed.

Since the random material must be discharged from the cutting line and the long material must be further cut, it is necessary to select the random material and the long material on the upstream side of the cutting machine.
As a sorting apparatus for this type of bar steel material, for example, Jitsuko Sho 52-4
Those described in 0783 and Japanese Patent Publication No. 53-13869 are known. The one described in Japanese Utility Model Publication No. 52-40783,
"A stopper which is moved up and down by an air cylinder is provided at an appropriate position of a roller table formed of a group of rollers arranged in a row, and the air cylinder is moved up and down between the rollers positioned in the direction in which the bar steel of the stopper advances, and A sorting frame is set up so that it rises to a higher position as it moves away from the stopper, and a coil spring is used for the support frame fixed to the machine base of the roller table on the upper side corresponding to the sorting frame. An automatic length-sorting machine for steel strips, characterized in that an upper holding mechanism, which is elastically installed as a holding plate, is arranged, and the steel strips are clamped and abutted against each other when the sorting frame is raised. "Met.

In this conventional apparatus, bar steel products having different lengths on the roller table are stopped by a stopper, and then each sorting frame is raised to clamp each bar steel product by a support frame and an upper holding mechanism. And float it on the roller table.
Then, by lowering the sorting frame closest to the stopper, the shortest strip steel supported only by the lowered sorting frame is lowered onto the roller table, and the longer strip steel is transferred to another sorting frame. It does not descend because it remains supported. Therefore, next, by driving the roller table, it is possible to sort and convey the lowered shortest steel strip material. Next, by lowering the sorting frame that is the second closest to the stopper, the long strip of steel material then descends and is similarly sorted and conveyed.

Further, the one described in the above Japanese Patent Publication No. 53-13869 describes that "in the front of the shearing machine in the conveying path of a roller conveyor device that conveys a large number of steel bars in parallel to the shearing machine. Provided with a stopper device that can block the transport path,
A bar steel material lifting / sorting device, characterized in that, on the upper hand side of this stopper device, a bar steel material lifting / sorting device is provided which is capable of individually lifting the bar steel material stopped by the stopper device in front of a shearing machine in a conveying path. "Met.

According to this sorting apparatus, the conveyance of a large number of steel bars on the roller conveyor is stopped by the stopper device, the length of each steel bar is detected by the detecting means, and the detecting means detects an abnormality. An abnormal bar steel material is selected by operating a lifting device corresponding to the bar steel material and lifting the abnormal bar steel material above the roller conveyor device.

[0007]

The above-mentioned Japanese Utility Model Publication No. 52-40783 has a problem that selection becomes difficult when the diameter of the bar steel material becomes thin. That is, when the diameter of the steel strip is small, for example, in the state where the shortest steel strip is lowered onto the roller table and the other long steel strips are supported by the selection frame, the steel strips supported by the selection frame are It bends due to its own weight and contacts the roller table. Therefore, if the roller table is driven to discharge the shortest steel strip in this state, slippage may occur between the steel strip supported by the selection frame and the roller table, and the surface of the steel strip may be scratched. Yes, it was difficult to sort. Further, a device for raising and lowering the sorting frame is required, and the structure is complicated.

Further, in the one described in the above Japanese Patent Publication No. 53-13869, since the lifting device must be provided corresponding to each steel bar, the same equipment can be used in a wide range from small diameter to large diameter. It was difficult to process, and the number of simultaneous processes was limited. Further, in this conventional device, a large number of detection means are required corresponding to each bar steel material, the control device thereof is complicated, and the cost is increased.

[0009] Therefore, an object of the present invention is to provide a bar steel material sorting apparatus having a simple structure that can be processed regardless of the diameter and the number of bar steel materials to be processed.

[0010]

In order to achieve the above object, the present invention takes the following means. That is, the features of the bar steel material sorting apparatus of the present invention are that the first conveyor device that conveys a large number of steel bars in parallel and the tip that aligns the tips of the many steel bars on the conveyor device in a horizontal row. An aligning device, a second conveying device which is arranged in the vicinity of the tip aligning device and conveys the steel bar on the conveying device to the rear end side, and a predetermined distance from the second conveying device to the rear end side of the steel bar Placed apart,
A third conveying device for further conveying the steel bar material sent by the second conveying device to the rear end side is provided.

According to the present invention, a discharge device is provided for discharging the steel bar material on the first transfer device located between the second and third transfer devices to the side of the first transfer device. Be purposeful. Further, it is assumed that the first transport device has a large number of first transport rollers arranged at predetermined intervals in the transport direction to transport the steel bar, and the second transport device is the first transport roller. It is assumed that there is a second transport roller that is disposed between the first transport rollers and is driven separately from the first transport roller, and the third transport device is disposed between the first transport rollers and is driven separately from the first transport roller. It is preferable that the third conveyance roller is provided and a pressing roller that presses the steel bar material is vertically movable above the second and third conveyance rollers.

[0012]

According to the present invention, a large number of steel bars are simultaneously conveyed in parallel by the first conveying device. A large number of steel bar materials conveyed by the first conveying device are aligned in a horizontal row by the tip aligning device.

A large number of steel bars on the first conveying device whose tips are aligned by the tip aligning device are conveyed to the rear end side by the second conveying device arranged in the vicinity of the tip aligning device. At this time, of the many steel bars transported by the second transport device, the rear end of the long one reaches the third transport device, but the short one does not reach the third transport device. .

Therefore, although the long ones are further conveyed to the rear end side by the third conveying device, the shorter ones are placed on the first conveying device between the second conveying device and the third conveying device. Will remain. Therefore, the short one and the long one are
It is sorted before and after it via the carrier.

When the discharging device is provided, the short steel bar material remaining on the first conveying device between the second conveying device and the third conveying device is removed by the discharging device from the side of the first conveying device. To be discharged. Further, the first transport device has a plurality of first transport rollers arranged at predetermined intervals in the transport direction to transport the steel bar, and the second transport device is the first transport roller. It is assumed that there is a second transport roller that is disposed between the first transport rollers and is driven separately from the first transport roller, and the third transport device is disposed between the first transport rollers and is driven separately from the first transport roller. And a third conveyor roller, and above the second and third conveyor rollers,
In the case where the pressing roller for pressing the steel bar material is arranged so as to be movable up and down, each of the conveying devices is composed of rollers, so that the steel bar material can be conveyed at the same level. Therefore, the conventional lifting device is not required, and the structure is simplified.

Further, since the pressing roller is provided on the second and third conveying rollers, the conveyance by the second and third conveying rollers is ensured.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. The basic configuration of the present invention is shown in FIG. 1, that is, the bar steel sorting apparatus of the present invention comprises a first transfer device 2 for transferring a large number of steel bars 1 in parallel, and a plurality of transfer devices 2 on the transfer device 2. Tip aligning device 3 for aligning the tips of the steel bars 1 in a horizontal row, and a second conveying device 4 arranged near the tip aligning device 3 for conveying the steel bars 1 on the conveying device 2 to the rear end side thereof. And a third conveyor which is arranged at a predetermined distance from the second conveyor 4 to the rear end side of the steel bar 1 and further conveys the steel bar 1 sent by the second conveyor 4 to the rear end thereof. The device 5 is provided.

2 and 3 show a configuration in which the basic configuration of FIG. 1 is further embodied, that is, the first transfer device.
A roller table is used as 2. This roller table is formed by arranging first conveying rollers 6 at predetermined intervals in the conveying direction. The conveying roller 6 is a roller having a straight outer peripheral surface, or a grooved roller having a large number of grooves in the axial direction, and each roller 6 is rotated by a drive device (not shown) so that the roller 6 is placed on the roller 6. A large number of placed steel bars 1 are transported to the downstream side.

As the tip aligning device 3, a cutting machine arranged on the downstream side of the roller table is used.
This cutting machine simultaneously cuts a large number of steel bar materials 1 conveyed to the downstream side by the roller table, and since the ends of the many steel bar materials 1 are aligned in a horizontal line by the cutting, The machine functions as the tip aligner 3.

The second transport device 4 includes a second transport roller 7
Have. The second conveying roller 7 is arranged in the roller table at a position separated from the cutting machine by a slight distance s. The second carrying roller 7 is arranged between the first carrying rollers 6 and at the same level as the first carrying roller 6, and can be rotated in the forward and reverse directions by a driving device (not shown). In the normal rotation (the direction in which the steel bar material is transported to the downstream side), it is synchronously driven so as to be the same as the transport speed of the first transport roller 6.

A pressing roller is provided above the second conveying roller 7.
8 is arranged, and the steel bar 1 can be sandwiched by the second conveying roller 7 and the pressing roller 8 from the vertical direction.
The pressing roller 8 is linked with the second conveying roller 7 and
It is driven at the same transport speed. The gap between the second conveying roller 7 and the pressing roller 8 can be adjusted. The third
The transport device 5 has a third transport roller 9 arranged in the roller table. This third conveyor roller 9 is also the first
It is arranged at the same level as the transport roller 6 and can be rotated in the forward and reverse directions by a drive device (not shown). At the time of forward rotation, it is synchronously driven so as to be the same as the transport speed of the first transport roller 6.

A pressing roller is provided above the third conveying roller 9.
10 are arranged so that the steel bar 1 can be sandwiched between the third conveying roller 9 and the pressing roller 10 in the vertical direction.
This pressing roller 10 is linked with the third conveying roller 9 and
It is driven at the same transport speed. The gap between the third conveying roller 9 and the pressing roller 10 can be adjusted. The second
The distance between the transport roller 7 and the third transport roller 9 can be adjusted, and the distance is set to the minimum product length L.

A discharging device 11 is provided for discharging the steel bar material 1 existing on the roller table between the second and third conveying rollers 7 and 9 to the side of the roller table.
The discharging device 11 includes a side pusher arranged on one side of the roller table between the second and third conveying rollers 7 and 8.
12 and a drive device 13 for moving the side pusher 12 to the other side of the roller table. The side pusher
12 has a height and a length with which the steel bar 1 on the roller table can be extruded.

A detector 14 for detecting the end portion of the steel bar 1 is provided at a position twice the minimum product length L on the upstream side of the cutting machine. Hereinafter, the sorting operation of the sorting apparatus according to the embodiment having the above-described configuration will be described. First, a large number of steel bars 1 arranged in parallel on the roller table of the first conveyor 2
Is conveyed by the roller table to a cutting machine, which is the tip aligning device 3 on the downstream side, and cut into a predetermined length by the cutting machine. At this time, the second and third transport rollers 7 and 9 are driven in the same direction and at the same transport speed as the first transport roller 6 of the roller table. At this time, the pressure rollers 8 and 10 stand by at the upper position and are not in contact with the steel bar 1.

Then, the cutting operation by the cutting machine is repeated, and the detector 14 detects the bar steel on the roller table having a length of 2 × L or less.
Judge as the final disconnection. Then, the state of the steel bar 1 which is expected to remain on the roller table after the final cutting is as shown in FIG. That is, the steel bar material 1 on the roller table on the upstream side of the cutting machine is a mixture of the random material 15 and the long material 16. In this state, the leading ends of the random material 15 and the long material 16 both coincide with the position of the cutting machine, and the rear ends thereof do not coincide with each other. Since the second conveying roller 7 is arranged in the vicinity of the cutting machine, at least the other irregular length material 15 and the elongated length material 16 except the extremely short irregular length material 17 are supported by the second conveying roller 7. ing. The second transport roller 7 and the third transport roller
The interval of 9 is the minimum product length L.
The rear ends of the long material 16 and the long material 16 are located downstream of the third conveying roller 9.

In this state, the first roller table
The driving of the carrying roller 6 is stopped, and the carrying roller 6 is fixed or freely rotatable. And the pressure rollers 8, 10
Is lowered and presses the steel bar 1, and the second and third conveying rollers 7, 9 are reversely rotated to convey the random material 15 and the long material 16 to the upstream side. The random material 15 and the long material 16 supported by the second transport roller 7 are sandwiched between the second transport roller 7 and the pressing roller 8 and forcedly transported upstream.
When the random material 15 comes off the second conveying roller 7, its rear end does not reach the third conveying roller 9 and no longer has a driving means, so that the roller table between the second conveying roller 7 and the third conveying roller 9 is not present. Stop up (see Figure 4).

The rear end of the long material 16 has a third conveying roller 9
Since the long member 16 is nipped by the pressing roller 10 and is forcibly conveyed to the upstream side, the long member 16 is conveyed to the position where the leading end of the long member 16 deviates from the third conveying roller 9 and stops at the deviated position. Become. However, as shown in FIG. 4, the long member 16 is on the roller table upstream of the third conveying roller 9, and the irregular member 15 is the roller table between the second and third conveying rollers 7 and 9. Above and above the very short scale material 17
Will be sorted on the table between the cutting machine and the second transport roller 7.

Then, by moving the side pusher 12 of the discharging device 11 in the lateral direction, the scale material 15 existing on the roller table between the second and third conveying rollers 7 and 9 is moved to the side of the roller table. Pay out to someone. After the payout, the long material 16 on the roller table is conveyed to the cutting machine side and cut. At this time, the short material 17 remaining between the cutting machine and the second conveying roller 7 is pushed out by the tip of the next succeeding material.

According to the above-mentioned embodiment, the backward feeding of the scale material or the like is
Since it is carried out at the level of the conveying surface of the roller table instead of being lifted by a lifter or the like as in the conventional case, there is no possibility of bending even if the diameter of the steel bar material becomes thin, so that it is possible to select with high accuracy. Further, even if the diameter and the number of the steel bars change and the gap between the adjacent steel bars changes, the processing can be performed without changing the equipment.

FIG. 6 shows another embodiment of the present invention in which the roller table 2a between the second and third conveying rollers 7 and 9 can be raised and lowered below the conveying surface. . That is, when different diameter steel bars such as concrete rebar having a projection on the outer peripheral surface are conveyed and cut in contact with each other as the steel bar 1, the short material 15 is reversed by the second and third conveyor rollers 7, 9. At the time of feeding, the long material 16 may catch and move the short material 15, which adversely affects the selection.

Therefore, during the sorting operation, the roller table 2a between the second and third conveying rollers 7 and 9 is lowered by a predetermined amount, so that the short material 15 that has passed through the second conveying roller 7 will be on the roller table 2a. Since it is dropped into the long material 16, the contact with the long material 16 at the transport surface level is released, and the short material 15 is prevented from being caught by the long material 16 and moving. From the viewpoint of such contact prevention, the descending amount of the roller table 2a is preferably not less than the radius of the steel bar 1.

Incidentally, instead of lowering the roller table 2a between the second and third transport rollers 7 and 9, the same effect can be obtained by raising the second and third transport rollers 7 and 9 by a predetermined amount. FIG. 7 shows another embodiment of the present invention, in which the pressing rollers 8 and 1 arranged above the second and third conveying rollers 7 and 9, respectively.
0 is arranged on the downstream side or the upstream side with a predetermined offset.

That is, if the diameters of a large number of steel bars 1 are uniform, even if the pressing rollers 8 and 10 are arranged directly above the second and third conveying rollers 7 and 9, all the steel bars 1 are made uniform. Since it can be pressed against, reliable transport can be achieved. However, if the diameter of the steel bar 1 varies within the tolerance, or if the scale is attached to the surface of the steel bar 1 and the diameters are uneven, the pressing rollers 8 and 10 will cause the second and third conveying rollers 7 and 9 to move. If it is arranged immediately above, the pressing force of the pressing rollers 8 and 10 will not act on some of the steel bars 1 and the conveying function thereof will deteriorate.

Therefore, the pressure rollers 8 and 10 are connected to the second and third rollers, respectively.
By arranging them offset with respect to the conveying rollers 7 and 9, the pressing rollers 8 and 10 are lowered to press the steel bar material 1, and as shown in FIG. 8, a bending moment acts on the steel bar material 1 to cause the bending. Occurs. By bending the steel bar 1 in this way, the pressing rollers 8 and 10 come into contact with all the steel bars 1 and press all the steel bars 1 to the lower conveying rollers 7 and 9, so that the conveying rollers 7 and 9 are The conveying force works effectively, and reliable sorting is performed.

The present invention is not limited to the above embodiment, and for example, the discharging device 11 tilts the roller table 2a between the second and third conveying rollers 7 and 9 to one side thereof. The random material on the roller table 2a may be discharged laterally. Further, the tip aligning device 3 may be like the stopper described in the conventional art.

[0036]

According to the present invention, even if the diameter or the number of bar steel materials to be processed changes, the processing can be performed without changing the apparatus, and even if the diameter of the bar steel material becomes thin, The sorting process can be performed with high accuracy.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a front view showing an embodiment of the present invention.

FIG. 3 is a plan view of FIG.

FIG. 4 is an explanatory diagram showing a first half stage of a sorting operation.

FIG. 5 is an explanatory diagram showing the latter half of the sorting operation.

FIG. 6 is a front view showing another embodiment of the present invention.

FIG. 7 is a front view showing another embodiment of the present invention.

FIG. 8 is an explanatory view of the operation of the embodiment shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Steel bar material 2 1st conveyance apparatus 3 Tip | edge alignment apparatus 4 2nd conveyance apparatus 5 3rd conveyance apparatus 6 1st conveyance roller 7 2nd conveyance roller 8 Pressing roller 9 3rd conveyance roller 10 Pressing roller 11 Ejection apparatus

Claims (3)

[Claims] 1. A first for conveying a large number of steel bars in parallel
A conveying device, a tip aligning device for aligning the tips of a large number of steel bars on the conveying device in a horizontal row, and a bar arranged on the conveying device near the tip aligning device to convey the bar steel on the rear end side. A second conveying device, and a third conveying device which is arranged at a predetermined distance from the second conveying device to the rear end side of the steel bar material and further conveys the steel bar material sent by the second conveying device to the rear end side thereof. And a device for sorting steel bars. 2. A discharge device is provided for discharging the steel bar material on the first transfer device located between the second and third transfer devices to the side of the first transfer device. The bar steel material sorting apparatus according to claim 1. 3. The first transfer device includes a plurality of first transfer rollers arranged at predetermined intervals in a transfer direction to transfer the steel bar material, and the second transfer device includes the first transfer rollers. The second conveyance roller is disposed between the conveyance rollers and is driven separately from the first conveyance roller, and the third conveyance device is arranged between the first conveyance rollers and different from the first conveyance roller. The steel bar material according to claim 1, further comprising a driving third conveyor roller, and a pressing roller for pressing the steel bar material is arranged above the second and third conveyor rollers so as to be vertically movable. Sorter.