JP3311677B2 - Steel bar delivery device for steel bar accumulation pocket - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar and bar transfer device capable of collecting and binding bars while preventing noise in a bar and steel pocket in a bar and bar processing step. In addition, the steel bar referred to in this specification is a general term for a steel bar, a straight and elongated steel bar such as a steel pipe,
Hereinafter, a description will be given using a bar as a representative.

[0002]

2. Description of the Related Art In the final stage of a steel bar processing process, steel bars are accumulated through a steel bar accumulation device shown in FIG. Steel bar 1 cut to a set size, for example, a predetermined size between 3 and 8 m
Is straightened one by one, and after being inspected by the flaw detector 2, passes through a bar steel feeding section 3 composed of an inclined skid,
The steel bars are fed into a steel bar accumulation pocket (hereinafter simply referred to as a pocket) 4, are aligned, and are accumulated in a state where they can be bound.

At this time, the bar 1 is intermittently fed out of the inclined skid 3 having a certain feeding cycle, dropped into the pocket 4 one by one, and accumulated at the bottom thereof. At the time of accumulation, by the collision between the steel bars 1 and by the collision on the pocket 4 receiving surface,
A loud noise of a metallic sound that sounds "Gachin" is generated. The noise at this time is particularly large due to the heavy weight of the long bar having a diameter of 16 to 105 mm, which is heavy, and gives an uncomfortable feeling to the field worker. There is also a problem that a flaw occurs and the commercial value is lost.

FIGS. 3 and 4 show two examples of a bar and bar transfer device as a conventional device for reducing noise during accumulation in the pocket 4, respectively. The first example shown in FIG. 3 is a prior art disclosed in Japanese Patent Laid-Open Publication No. Hei 6-305568. A take-up wheel 1 fixed to a support and the other end is rotationally urged by a motor 13
4, the tension of the chain 15 is gradually loosened with the increase in the number of the steel bars 1 to reduce noise.

[0005]

In the first example, even though the steel bar 1 can be prevented from dropping into the pocket 4 due to a large head, the steel bar 1 fed from the steel bar feeding portion 3 and the steel bar 1 in the pocket 4 can be prevented. Therefore, the noise due to the collision cannot be reliably prevented only by shortening the fall distance to the pocket 4 in this manner.

On the other hand, a second example shown in FIG.
A prior art disclosed in Japanese Patent No. 13408, which has a structure in which a swingable receiving arm 16 is provided in a pocket 4 and the receiving arm 16 is gradually lowered as the stack of steel bars 1 increases. is there. However, in the second example, as in the first example described above, only the fall distance to the pocket 4 is shortened, and similarly, noise due to collision between the steel bars 1 cannot be prevented. In both cases,
There is a problem that the structure is complicated, the equipment cost is high, and disadvantages are unavoidable in terms of economy.

SUMMARY OF THE INVENTION The present invention has been made to solve such problems, and an object of the present invention is to prevent collision between a pocket and a bar in a steel bar accumulation pocket and collision between the bars. In addition, it is an object of the present invention to provide a steel bar delivery device for a steel bar accumulation pocket which can prevent noise due to collision and surface steel bar flaws.

[0008]

The present invention has the following configuration to achieve the above object. That is, in the invention of claim 1 of the present invention, the support point A at the opposite position to the bar steel feeding portion 3 is sandwiched by the bar steel collecting pockets 4 where the steel bars 1 intermittently fed from the steel bar feeding portion 3 are aligned and stacked. It has an arm provided to be able to swing up and down in the vertical direction and extend and contract in the front-rear direction so as to be able to approach / separate from the bar feeding portion 3, and to have a tip portion of the arm 7.
Bar delivery arm 5 formed in
And a drive means for extending and contracting and swinging the bar steel delivery arm 5 in synchronization with the feeding cycle of the bar bar 1 in the above-mentioned manner. Moves to the position immediately before the bar feeding portion 3 and above the bar accumulation pocket 4.
1 and the waiting bar transfer section 7 transfers the bar 1 to 1
The receiving arm is lowered, and the bar delivery section 7 moves to the bar delivery point P2 at an intermediate position inside the steel bar accumulation pocket 4, and
The steel bar accumulation is characterized in that the steel bar 1 is discharged from the steel bar delivery portion 7 at the steel bar delivery point P2, and the arm is moved up and returns to the upper limit position as the arm retreats. This is a pocket steel bar delivery device.

According to a second aspect of the present invention, in accordance with the first aspect of the present invention, the drive means constitutes the bar steel transfer arm 5 itself or extends and contracts the bar steel transfer portion 7 in the front-rear direction. The hydraulic cylinder includes a hydraulic cylinder provided in parallel with the steel bar transfer arm 5 and a balance weight 8 provided on the rear side of the steel bar transfer arm 5 opposite to the steel bar transfer portion 7. The arm 7 is extended to wait the bar 7 at the bar receiving point P1 and the arm is reduced to return the bar transferring unit 7 to the upper limit position. The arm is automatically lowered by the weight of the bar 1 by receiving one bar 1 at the bar transfer section 7 at P1, and the bar is transferred from the bar transfer section 7 at the bar transfer point P2. 1 is released, and the arm is characterized by being configured to act to automatically Osshado the arm at the upper limit position where the balance of the weight is maintained by retraction.

The invention of claim 3 in the present invention relates to the invention of claim 1 or 2 described above,
However, the present invention is characterized in that the shock absorbing member 9 has a shock absorbing property and an abrasion resistance.

According to the present invention, the bar 1 which is intermittently fed from the bar feeding portion 3 is buffer-received by the bar transferring portion 7 of the bar transferring arm 5 in a state where the head is minimized, and the pocket 1 is pocketed. 4, it is possible to gradually release them and sequentially pile them up.
The noise level at the time of accumulation of the steel bar 1 in the pocket 4 is greatly reduced, and a quiet accumulation operation without harsh noise can be realized. Moreover, since the impact due to the collision is not caused on the steel bar 1 itself, the steel bar 1 can be accumulated without any surface flaws, and the quality of the steel bar product can be maintained.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be specifically described below with reference to the accompanying drawings. FIG. 1 schematically shows the structure of a bar and bar transfer device according to an embodiment of the present invention in (a) to (f) in the order of operation.

Referring to FIG. 1 and FIG. 2, a steel bar delivery apparatus according to an embodiment of the present invention includes a steel bar delivery arm 5 attached to a pocket 4 and a drive for extending and retracting and swinging the steel bar delivery arm 5. And means. In this embodiment, the arm 5 itself for bar and bar delivery is realized by a fluid pressure (for example, pneumatic) cylinder, and the tip of the piston rod is directed toward the bar and bar delivery unit 3 side. 3 is provided so as to be vertically swingable with reference to a support point A provided at a position opposite to the support point A and to be extendable and contractible in the front-rear direction so as to be able to approach / separate from the bar feeding portion 3. In addition, the above-mentioned bar steel delivery arm 5 is arranged in the left-right direction of the pocket 4 (longitudinal direction of the stacked steel bars 1).
A plurality of units are provided and are operated synchronously by the control means 6 for controlling the air cylinder. In addition, the bar steel delivery arm 5 uses an arm device assembled into a load-bearing mechanism that can swing and expand and contract with a steel material or the like. What is made to be performed may be used.

The arm 5 composed of an air cylinder is
A shock absorbing material 9 made of a material having shock resilience and abrasion resistance such as urethane resin or nylon resin is integrally attached to the tip of the piston rod, and this portion can handle the steel bar 1 to be delivered and received in a buffered manner. It is formed on the bar delivery section 7. Also, on the rear part opposite to the rod side of the cylinder body,
In a non-operation state in which the balance weight 8 is mounted and the bar 1 is not received, the rotational moment due to its own weight on the rear side where the balance weight 8 is mounted is the same as that on the front side of the bar transfer section 7. The weight of the balance weight 8 is set so as to be slightly larger than the bar weight, and as shown in FIG. The bar 3 is stabilized at a substantially horizontal position so as to reach the bar receiving point P1 just before the position 3 and above the pocket 4. This stable position is the upper limit position corresponding to the highest elevation position of the swing range of the arm 5, and the upper limit position is determined by, for example, a stopper mechanism (not shown). As in the case of the upper limit position, the arm 5 has a lower end position in which the steel bar transfer point P2 (see FIG. 1 (b)) set at a predetermined level at the intermediate position inside the pocket 4 corresponds to the lowest lowering position. So that
The positioning is performed by a stopper mechanism or the like, so that the arm 5 can be raised and lowered within the swing range between the lower limit position and the upper limit position.

In the above embodiment, the air cylinder serves as a telescopic drive mechanism with respect to the steel bar transfer arm 5, while the balance weight 8 serves as a swing drive mechanism. The balance weight 8 constitutes a driving means. The control means 6 is provided to control the air cylinder in the driving means. This control means 6
Is formed in an electric circuit for controlling a pneumatic circuit related to an air cylinder, and a cutout detection sensor 11 described later
And, based on a command signal from the timer 12, the air cylinder of the arm 5 is subjected to stroke control for expanding and contracting a piston rod in a timely manner.

The mode of operation of the above embodiment having such a configuration will be described below with reference to FIG. When the steel bar cutting device 10 is operated and one steel bar 1 is fed to the steel bar feeding section 3 composed of an inclined skid, a cutting detection sensor 11 is provided.
Transmits a steel bar cutting signal, and upon receiving this signal, the control means 6 operates, whereby the arm (piston rod) of the steel bar delivery arm 5 extends a predetermined stroke, and the steel bar delivery section 7 moves to the steel bar receiving point P1. Wait until the end. The timer 12 starts counting before and after the arm extension. The state at this time is shown in FIG.

When the extended arm receives one of the fed bar bars 1 in a buffered manner by the buffer material 9 of the bar bar transfer section 7, the arm is automatically lowered by the weight of the bar bar 1 while the bar bar 1 is placed on the arm. As shown in FIG. 1 (b), the bar and bar delivery section 7 moves to the lower limit position where it reaches the bar and bar delivery point P2 at an intermediate position inside the pocket 4. When the bar bar delivery point P2 is reached, the bar bar 1 on the bar bar transfer section 7 falls into the pocket 4. Since the steel bar 1 rolls through the cushioning material 9, there is almost no collision sound with the receiving surface of the pocket 4, and also the collision sound between the steel bars when the steel bar 1 previously released in the pocket 4 exists. Almost no.

After the bar 1 has been released, the timer 12 outputs a signal when the time is up, at a point in time when appropriate timing is taken. When the control means 6 outputs an output for retreating the piston rod based on this signal, the arm contracts (see FIG. 1C). The bar-steel transfer arm 5 whose arm is contracted automatically moves by the action of the balance weight 8 and returns from the lower limit position to the upper limit position (see FIG. 1 (d)).

One cycle of bar delivery is completed by the series of operations described above.
The steel bar can be successively transferred by repeating each drop when dropped (see FIGS. 1 (e) and (f)).
Through this operation, it is possible to perform a quiet operation in which the collision noise between steel bars is greatly reduced.

The bar and bar transfer device of the above embodiment shown in FIG. 1 is of an automatic lowering / elevating type provided with a balance weight 8, but the present invention is not limited to such a mode. The bar 5 is provided with the balance weight 8 and the arm 5 for bar and bar delivery is positively lowered and raised by a motor or an air actuator. It is also possible to use a bar and bar transfer device that has a holding mechanism, and it is also possible to use a spring mechanism capable of exhibiting the same function as this instead of the balance weight 8. Various modifications are also included in the scope of the present invention.

[0021]

The present invention is embodied in the form described above and has the following effects. That is, according to the present invention, it is possible to significantly reduce the noise level by avoiding collision between the bar and the pocket and the bar during the accumulation of the bar and pocket, for example, a diameter of 50 mmφ and a length of 600 mm.
In the case of 0 mm material, the noise which was conventionally 120 dB can be reduced to 83 dB by implementing the present invention, and thus the working environment is improved. In addition, during accumulation (when steel bars fall)
The quality of the steel bar product can be improved by eliminating the flaws generated in the steel bar, and can be realized with a simple device such as an air cylinder, so that the measures against pocket noise can be implemented at low cost and in a short time.

[Brief description of the drawings]

1 (a) to 1 (f) are schematic structural views showing a steel bar delivery apparatus according to an embodiment of the present invention in an operation order.

FIGS. 2A and 2B are perspective views of a steel bar accumulation device, wherein FIG. 2A is an overall view, and FIG. 2B is a partial view of a steel bar accumulation pocket 4 in FIG.

FIG. 3 is a schematic structural diagram of a first example of a conventional steel bar transfer device.

FIG. 4 is a schematic structural diagram of a second example of a conventional bar delivery device.

[Explanation of symbols]

1: Steel bar 2: Flaw detector 3
... Steel bar pay-out part 4 ... Steel bar accumulation pocket 5 ... Steel bar transfer arm 6
... Control means 7 ... Bar delivery section 8 ... Balance weight 9
... cushioning material 10 ... bar steel cutting device 11 ... cutting detection sensor 1
2 ... Timer 13 ... Motor 14 ... Winding car 1
5 ... Chain 16 ... Receiving arm A ... Support point P
1… Bar receiving point P2… Bar delivery point

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hitoshi Inoue 2 Nadahama-Higashi-cho, Nada-ku, Kobe City, Hyogo Prefecture Inside Kobe Steel Co., Ltd. (72) Inventor Hidemi 2 Nadahama-Higashi-cho, Nada-ku, Kobe City, Hyogo Prefecture Kobe Steel, Ltd. Kobe Steel (56) References JP-A-6-305568 (JP, A) JP-A-52-77368 (JP, A) JP-A-6-16242 (JP, A) JP-A Sho-59 −39628 (JP, A) Japanese Utility Model Application 52-116883 (JP, U) Japanese Utility Model Application Hei 6-63531 (JP, U) Japanese Patent Publication No. 58-13408 (JP, B1) (58) Field surveyed (Int. . ^7, DB name) B65G 57/18 B65B 27/10 B65G 47/82

Claims (3)

(57) [Claims] 1. A steel bar which can swing vertically in a vertical direction with reference to a support point at a position opposite to the bar feeding portion with a steel bar accumulation pocket in which bar bars intermittently fed from the bar feeding portion are aligned and stacked. An arm provided so as to be capable of extending and contracting in the front-rear direction that can be approached to and separated from the pay-out portion, and a tip portion of which is tuned to a bar-steel delivery arm formed in a bar-steel delivery portion, and to a pay-out cycle of the bar in the steel bar pay-out portion. A driving means for extending and retracting and swinging the steel bar delivery arm, wherein the steel bar delivery arm has an arm extending at the upper limit position of the swing range, the steel bar delivery portion is moved, and the steel bar delivery portion is immediately in front of the steel bar delivery portion. The steel bar receiving point at the position above the accumulation pocket stands by, and the waiting bar and bar receiving section receives one bar and the arm is lowered, and the bar and bar delivery section is moved to the bar accumulation pocket. The bar moves to the bar delivery point at the middle position inward, the bar is released from the bar delivery portion at the bar delivery point, and the arm moves up and returns to the upper limit position as the arm retreats. A steel bar transfer device for a steel bar accumulation pocket, which is provided as follows. 2. A fluid pressure cylinder, wherein the driving means constitutes a bar-steel transfer arm itself or a bar-bar transfer arm for extending and retracting the bar-steel transfer portion in the front-rear direction, and the bar bar of the bar-steel transfer arm. A balance weight provided on the rear side opposite to the delivery section, wherein the fluid pressure cylinder returns the arm extension for holding the steel bar delivery section at the steel bar receiving point and returns the bar delivery section to the upper limit position. Arm to reduce the balance
The weight automatically extends the arm with the weight of the bar by receiving one bar at the bar receiving portion at the bar receiving point, and the bar is transferred from the bar transferring portion at the bar transferring point. 2. The steel bar transfer device according to claim 1, wherein the device is operable to automatically move the arm to the upper limit position where the arm is released and the weight is maintained by retreating the arm. 3. The bar-steering device according to claim 1, wherein the bar-steering portion is made of a shock-absorbing and abrasion-resistant cushioning material.