JPH10277672A - Forging press billet supplying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply a billet by continuously running a conveyer. SOLUTION: A billet B is supplied on a chain conveyer 1 through a shute 3 from a heating device, and the billet B is transferred onto a receiving stand 2 of a forging press machine P. Projected slats 11 are provided on respective chain links 12, and V-groove shaped mounting parts 13 are installed over the total length and the billet B from the shute 3 is supported surely with any mounting part 13 and transferred. As the result, the supply of the billet B to the conveyer 1 from the shute 3 is synchronized to one action cycle of the forging press machine P. By inclining the receiving stand 2 like the chain line, discharging the billet B, preventing it from being lapped, and by making the running speed of the conveyer 1 variable, the transferring speed is plowed so as to cope with the trouble of the forgeing press machine P of the short time.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for supplying a billet, which is a material to be forged, to a forging press.

[0002]

2. Description of the Related Art In hot forging, a billet to be forged is heated to a required temperature by a heating device, and the heated billet is conveyed to a forging press and formed into a required shape. Various billet supply devices from the heating device to the press have been invented.
There is a conveyor using a conveyor disclosed in JP-A-113137.

[0003] As shown in FIG. 4, the supply device includes a plurality of billets B, which are sent from a heating device 51 via a chute 52 and are fixed on a chain conveyor 54 by a pusher 55 at a predetermined pitch. Individual billet mounting table 5
3, and is mounted horizontally by a servomotor 57 via a driving sprocket 58.
4 at the end of the driven sprocket 59, the billet B falls down on the billet receiving base 56 by the rotation of the chain conveyor 54, the billet B is pinched by the transfer feeder, and the forging press P ( It is supplied to the mold P ₁ ).

[0004]

In the prior art shown in FIG. 4, the billet placing table 53 has a Y-shape rising from the chain link, and the billet B is pushed into the V-shaped receiving surface from the lateral direction to receive the billet B. The receiving is not performed smoothly unless the placing table 53 is at an appropriate position, and a receiving failure is likely to occur. For this reason, the traveling of the chain conveyor 54 is stopped, the mounting table 53 is stopped at a predetermined position, and the billet B is received. That is, since the chain conveyor 54 repeatedly runs and stops, the servo motor 5
The operation condition 7 is to repeatedly start and stop.

Under these operating conditions, the driving sprocket,
The overload repeatedly acts on the drive system and the transmission system such as the chain link and the driven sprocket, and the strength of the sprocket and the chain link is required.

Further, if the chain conveyor 54 stops and the billet B is securely mounted on the mounting table 53, and then the chain conveyor 54 is started and stopped at a predetermined position to shorten one cycle time, The traveling speed of the chain conveyor 54 is increased, and the billet B may fall off from the mounting table 53 due to rapid movement at the time of starting and stopping. In addition, the strength of the entire device is required because the device can withstand a sudden movement, and the loss of electric energy also increases, so that running costs are not ridiculous.

Further, the billet B is extruded onto the mounting table 53 by the start and stop of the servomotor 57 and the pusher 55,
In order to match the mounting timing, a control device for confirming each operation and issuing a signal is required, which is inevitably expensive.

[0008] Incidentally, since the mounting table 53 of the prior art is provided at the interval of the feeding pitch of the forging press machine, if the billet B is to be placed on the V-shaped receiving surface so as to be dropped from above, the mounting table 53 becomes If it is not at the fixed position, poor reception is likely to occur, and there is a risk of popping out. For this reason, even if the storage (mounting) method from above is adopted, the mounting table 53 must be stopped at a fixed position, and the operating condition of the chain conveyor 54 is repeated starting and stopping.

In order to solve these problems, the present invention is to continuously run the conveyor without starting and stopping the conveyor so that the billet B can be reliably and at high speed to the forging press P. It is an object of the present invention to provide a billet supply device for a forging press that achieves inexpensive, energy-saving, and high-speed demanded by the industry today.

[0010]

According to the present invention, there is provided an endless chain conveyor provided between a heating device and a forging press, and a billet from the heating device is provided at a starting end of the chain conveyor. In a well-known forging press billet supply device provided with a delivery means for supplying the conveyed billet onto a chain conveyor, and a receiving stand for the conveyed billet at the end of the chain conveyor, the billet is attached to each chain link of the chain conveyor. Are formed in such a manner that groove-shaped mounting portions are accommodated from above, and the mounting portions are provided continuously over the entire length of the chain conveyor.

As described above, since the billet receiving portion is formed continuously over the entire length of the chain conveyor, if the billet is fed from above to the chain conveyor, the billet is received by any of the receiving portions. At this time, since the mounting portion has a groove shape in which the billet fits from above, the billet can be dropped from above and supplied to the chain conveyor, received by any of the mounting portions, and the billet is placed in the groove-shaped mounting portion. It is conveyed smoothly without rolling in the storage section.

Receiving the data on any one of the mounting portions is performed in the same manner as in the prior art, for example, by stopping the chain conveyor or causing the mounting portion to correspond to the billet transferring device. The billet can be supplied to the chain conveyor according to the work cycle of the forging press machine, and the billet can be supplied to the forging press machine by running the chain conveyor. That is, it is not necessary to drive the chain conveyor at the timing of both the billet receiving and the delivery to the forging press.

As a specific mode of the billet mounting portion, a configuration in which mountain-shaped ridges are provided on each chain link of the chain conveyor in the width direction thereof and formed by opposed slopes of adjacent ridges is adopted. (Claim 2). The mounting portion reliably prevents the billet from rolling with the ridge slope.

[0014] The receiving table may be configured to be able to pay out the received billet (claim 3). In this way, in the forging press machine, if the receiving of the billet is delayed due to some circumstances, if the delay is within the billet supply interval time from the chain conveyor, the receiving table pays out the billet and the next billing is performed. When the billet is received, the work can be continued without stopping the chain conveyor. Also, the billet can be paid out until the forging press becomes normal.

Further, a billet detector is provided in the middle of the billet conveyance path of the chain conveyor, and the chain conveyor is driven by a variable speed motor. May be adjusted (claim 4).

In this way, if the billet is delayed due to some reason in the forging press, the time until the billet will be received is set in advance, and the billet is detected for more than that time. The electric motor is controlled so that the traveling of the conveyor is adjusted so that the traveling time from the container to the end of the conveyor is required. As a result, the billet detected by the detector is likely to be supplied to the receiving table after the billet disappears on the receiving table, and the work can be continued in many cases. If the trouble is eliminated, the normal operation is restored by the return command at the same time.

[0017]

1 to 3 show an embodiment of the present invention. FIG. 1 is a front view of a billet supply conveyor of this embodiment, FIG. 2 is an enlarged front view of the billet receiving portion, and FIG. FIG. 3 is an enlarged perspective view of a billet mounting portion of the conveyor.

The billet B sent out from a billet heating device (heating furnace) (not shown) rolls along, for example, a guide groove 31 of the chute 3 and falls from a falling hole 32 at an end to an X portion of the billet supply conveyor 1. I do.

In the conveyor 1, a flat slat 12a is attached to each chain link 12, and each slat 12a
A plate piece 11a is welded to a in the shape of a mountain to form a mountain-shaped ridge (slat) 11 in the width direction of the conveyor 1. V-shaped grooves are formed between the protrusions 11 so that the slopes of the protrusions 11 face each other, and the grooves serve as the mounting portions 13 of the billet B. That is, the conveyor 1 is provided with the mounting portion 13 of the billet B.
Are provided continuously over the entire length.

For this reason, the billet B dropped from the guide groove 31 is dropped and supported on any one of the mounting portions 13 of the conveyor 1, that is, the mounting portion 13 located at the X portion. On the other hand, since the conveyor 1 is traveling in the direction of the arrow by the drive motor 16 via the drive sprocket 15, the supported billet B is transferred in the direction of the forging press P.

As means other than the chute 3 as shown in the drawing for placing the billet B on the billet supply conveyor 1, as a pre-process, after rough forming with a forging roll, the material is not rolled, but a material handling device. There is a method of sandwiching a rough molded product and placing it on the placing portion 13 from above, etc. By selecting an optimal means according to its own line, the ability of the billet supply conveyor 1 is maximized. be able to.

The end portion of the billet supply conveyor 1 is wound around a driven sprocket 14, and at this end portion, the chevron ridge 11 is rotated.
The billet B inside is rolled on the slope of the ridge 11 and supplied to the billet receiving stand 2. In the billet receiving stand 2, after the billet B rolls on its inclined surface 21, the billet B comes into contact with the stop surface 22 and stops and is formed with an L-shaped groove 23 which is released upward. always maintained in a fixed position Z (fixed point supplied to the mold P ₁ forging presses). Fixed point Z billet held in the B, for example by holding the billet B by a transfer device is provided on the mold P ₁ forging press P, which is the next step.

The billet supply speed to the billet supply conveyor 1 is set so as to interlock with one cycle time of the press operation of the forging press P (up and down movement time of the upper die). Since the discharge speed of the billet B to be discharged is also set so as to be synchronized with one cycle of the forging press machine P at regular time intervals, the billet B is also synchronized on the conveyor 1 with one cycle of the forging press machine P. Supplied. For this reason, the billet B is supplied to the billet receiving table 2 in synchronization with one cycle of the forging press P while maintaining a constant interval.

When the size of the billet B changes and the one cycle time of the forging press P (for example, when it is necessary to perform one forging operation) is changed, the discharge speed of the billet B discharged from the billet heating furnace is changed. Naturally also changed,
The mounting portion 13 of the conveyor 1 also changes, but since the mounting portions 13 are provided continuously for each pitch (one link), the billet B is supported on any of the mounting portions 13, The change can be dealt with without any trouble. In other words, the driving motor 16 can be a general-purpose motor having a steady speed.

When the billet supply speed of the billet supply conveyor 1 is made variable, it is performed by an inverter motor or a servomotor. Inverter motors are less expensive than servo motors. By variably controlling the billet supply speed, the response to the one cycle time change of the forging press P becomes more flexible, and when the forging press P is stopped for a short time due to some trouble during the forging operation, The billet supply speed is slowed down, and control can be performed so that the billet B falling to the fixed point Z of the billet receiving table 2 does not double. In this control, a detecting device 4 for detecting the position of the billet B to be conveyed is provided at a fixed position Y on the forward path of the conveyor 1, the billet B is detected at the position Y, and a required time T from the position Y to the fixed point Z is calculated. ₀ is set in advance, and when an abnormal signal is detected when a trouble occurs, the time is switched to a time T longer than the preset time T ₀ , and the trouble is resolved within the delayed transfer time T, 2 is supplied to the forging press P so that the billet B does not double on the cradle 2.

However, if there is a trouble for a certain time (<T)
If it does not recover even after the elapse of time,
4 is rotated clockwise, and is rolled on the discharge chute 25 as shown by a two-dot chain line in FIG.

[0027]

According to the present invention, since the billet mounting portion is formed continuously over the entire length of the billet supply conveyor as described above, the present invention has wide applicability to the delivery means for placing the billet on the conveyor. Improve the workability of the forging press line. In addition, since the billet can be supplied while keeping the conveyor speed constant, the operation can be performed using a general-purpose motor instead of a special drive motor. For this reason, since overload due to speed change does not act on the drive system and the like, downsizing, weight reduction, and long life can be achieved, and maintenance is simplified. These are inexpensive and have a great effect on achieving high speed and reducing running costs (high efficiency, simple maintenance, energy saving, etc.).

Further, if the billet is bypassed by rotating the billet pedestal for the trouble in the operation of the forging press machine, the continuity of the work can be secured. Further, if a variable speed conveyor and a billet detector are provided, the continuity thereof can be ensured and the billet bypass can be reduced.

[Brief description of the drawings]

FIG. 1 is a schematic front view of one embodiment.

FIG. 2 is an enlarged view of the billet receiving portion.

FIG. 3 is a partially enlarged perspective view of the conveyor.

FIG. 4 is a schematic diagram of the prior art.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Billet supply conveyor (chain conveyor) 2 Billet receiving stand 3 Placing device (billet transfer means) 4 Billet detector 11 Ridge (Yamagata slat) 12 Chain link 12a Slat 13 Placing part 14 Follower chain sprocket 15 Drive chain sprocket 16 Drive motor 25 Billet discharge chute P Forging press P ₁ Mold

Claims (5)

[Claims] 1. An endless chain conveyor 1 is provided between a heating device and a forging press P, and a delivery means for supplying a billet B from the heating device onto the chain conveyor 1 is provided at the beginning of the chain conveyor 1. In addition, in a billet supply device for forging press provided with a receiving stand 2 for the conveyed billet B at the end of the chain conveyor 1, a groove-shaped mounting in which the billet B is accommodated from above in each chain link 12 of the chain conveyor 1. A billet supply device for a forging press, wherein the placing portions 13 are respectively formed and the placing portions 13 are provided continuously over the entire length of the chain conveyor 1. 2. The mounting portion 13 of the billet is attached to each chain link 12 of the chain conveyor 1 by using a mountain-shaped ridge 1.
2. A billet supply device for a forging press according to claim 1, wherein the first and second projections are provided in the width direction of the conveyor, and are formed by the opposed slopes of the adjacent ridges. 3. The billet B received by the receiving table 2
Claim 1 can be paid out.
Or the billet supply device for forging press according to 2. 4. The chain conveyor 1 is continuously run at a constant speed, and the billet B is transferred from the receiving means 2 to the chain conveyor 1 in accordance with a billet B supply cycle from the receiving table 2 to the forging press P. 4. The billet supply device for a forging press according to claim 1, wherein the billet is supplied. 5. A billet detector 4 is provided in the middle of the billet conveying path of the chain conveyor 1, and the chain conveyor 1 is driven by a variable speed motor, and a chain is driven by the motor according to a billet detection signal of the detector 4. The billet supply device for a forging press according to any one of claims 1 to 4, wherein a conveying speed of the conveyor (1) is adjusted.