JP4114146B2 - Material supply device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a material supply device suitable for use as a device for delivering a material to be processed to a forging press.
[0002]
[Prior art]
Various things are put into practical use as a material supply device that delivers a work material conveyed by a conveyor to a forging press. This type of material supply device receives a material at a predetermined position and moves to a predetermined delivery position. As a drive mechanism, a pusher type device using a cylinder or a cam or crank using a motor as a power source is used. There is a structure that combines a mechanism and a lever. In addition, this type of material supply device is driven by a signal from the forging press side because it is necessary to carry the material in synchronism with the operation on the forging press side as a subsequent device.
[0003]
By the way, when any abnormality occurs on the forging press side, the continuously conveyed material cannot be supplied to the forging press. Therefore, it is necessary to discharge the material to the outside before receiving it in the material supply device. In consideration of this point, the applicant of the present application has developed a device that is configured so that the material conveyed to the receiving position of the material supply device is immediately evacuated to the bypass to prevent the occurrence of secondary trouble. Have applied for a patent (see Patent Document 1).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 2001-105094
The apparatus described in Patent Document 1 is provided with a holder for receiving a material descending the carry-in chute at the lower end portion of the carry-in chute provided at the terminal end of the conveyor, and the holder is moved from the material receiving position to the forging press side. The holder bottom is provided with an openable / closable shutter and an opening / closing means for opening / closing the shutter. In this apparatus, the moving means for moving the holder is constituted by an air cylinder, a link lever, and a lever fixed to the holder, and the shutter opening / closing means is constituted by an air cylinder and a lever fixed to the shutter.
[0006]
In a normal state in which the forging press is operating normally, the material conveyed by the conveyor conveys the carry chute, is received in the holder where the bottom shutter is closed, and is held by the chuck, As the holder moves, it is conveyed to a predetermined delivery position on the forging press side. Then, after being sandwiched by the chuck of the transfer device at that position, it is released from the chuck of the holder and delivered to the press side. The holder that has delivered the material is returned to the lower end of the carry-in chute by the moving means and receives the next material. During this reciprocation, since the shutter at the bottom of the holder is at the lower end of the carry-in chute, the material waiting on the chute does not fall downward.
[0007]
On the other hand, when any abnormality occurs on the forging press side, the opening / closing means is operated to move the shutter from the lower end portion of the carry-in chute to the forging press side. Then, the material supplied to the carry-in chute from the conveyor slides down the chute, falls from the lower end portion thereof to the outside, and is sent to the bypass provided at the lower portion of the material supply device. For this reason, it is not necessary to generate a secondary trouble on the forging press side.
[0008]
[Problems to be solved by the invention]
However, in the apparatus described in Patent Document 1, the holder and the shutter are configured as separate members, and each requires a driving means, so that the structure of the entire apparatus and the configuration of the control system are complicated. is there. In addition, along with the recent increase in speed of forging presses, those driven by air cylinders and ordinary motors have poor followability, and it is difficult to fine-tune the speed in synchronization with changes in material weight and production tact on the press side. It has become. Therefore, the present invention has an object to provide a material supply device that improves the above-described problems and has a simple structure and control system configuration.
[0009]
In order to solve the above problems, the present invention has the following configuration. That is, the raw material supply apparatus according to the present invention is provided between the carry-in chute (S) provided at the terminal portion of the transfer conveyor (C) and the subsequent apparatus, and is a material that descends the carry-in chute (S). A material supply device (1) for holding (B) by a holder and transferring it to a receiving position of a subsequent device, the material supply device (1) being formed as a cup-shaped cylinder having an open upper end. a plurality of holder that holds accept pre SL material (B) (5), a plurality of shutters for closing the lower end opening of the loading chute in the distance portion (S) of the holder (5) (6) DOO is a rotating body provided alternately along the outer peripheral portion (4), the plurality of holders (5) and a plurality of shutters (6) drive means for rotating the rotary body (4) in a predetermined direction to hold the And receiving the material from the holder of the rotating body And a sheet to the transfer device, wherein the material by the rotation of the rotating body while configured to transfer to the delivery position to the transfer device (D), if an abnormality occurs in the subsequent apparatus, the subsequent apparatus the signal emitted from said transfer device, such no transfer of material (B) to said transfer device is performed by the emergency evacuation state that does not interfere with the rotating body (4) Rutotomoni, the rotating body (4) so that emitted material held in the holder (5) in by rotation continues (B) is, when the holder (5) is turned downward from the horizontal, due to its own weight or its own weight and centrifugal force It is characterized by being configured.
[0010]
This material supply device is installed between a carry-in chute provided at the terminal end of the conveyor and a receiving position of a subsequent device such as an automatic forging press. The workpiece material sent by the conveyor is received by a holder that slides down from the carry-in chute and stands by directly below the carry-in chute. When the holder just below the carry-in chute receives the material, the rotating body rotates by a predetermined angle, and the holder holding the material moves to a delivery position to a subsequent device such as a forging press. Then, take over a material attempt to transfer device is held by the holder, supplied to a subsequent device. Since the shutter keeps closing the lower end portion of the carry-in chute while the holder holding the material moves to the delivery position, the material that has reached the lower end portion of the carry-in chute does not fall.
[0011]
The plurality of holders and the shutter are preferably provided at equal intervals, that is, at the same pitch, on the outer peripheral portion of the rotating body. Then, as described in claim 3, when one holder is located at the delivery position, if the holder is arranged so that another holder is located at the material acceptance position, the material is received and delivered simultaneously. It can be efficient. In addition, as described in claim 4, in the vicinity of the material delivery position, if the rotational speed of the rotating body is reduced to such an extent that the material can be delivered, the material can be obtained without stopping the rotating body. Since the material can be delivered in synchronization with the operation of the subsequent process, the material can be delivered more efficiently.
[0012]
On the other hand, when an abnormality occurs on the subsequent apparatus side such as a forging press, the rotating body continues to rotate without delivering the material based on the abnormality occurrence signal from the subsequent process side. For this reason, the raw material held by the holder moves along the circumferential trajectory without being delivered to the subsequent process, and is discharged to the outside at a position past the delivery position. Therefore, secondary troubles caused by supplying raw materials one after another in a state where troubles occur in the forging press or the like are prevented.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings. 1 and the following drawings show a material supply apparatus according to the present invention. This material supply apparatus 1 is a conveyance conveyor C that conveys a billet that is a workpiece B heated in a heating furnace. and loading chute S provided on the end portion, is disposed between the automatic forging press. A base 2 of a material supply device (hereinafter abbreviated as “supply device”) 1 is attached to a gantry 3 of a transfer conveyor C, and a carry-in chute S is attached to the base 2.
[0014]
The carry-in chute S faces the rotating body 4 of the supply device 1 with the inlet side facing the end of the conveyor C and the outlet side coupled to the bracket 7 fixed on the base 2 via the flanges 8 and 9. Yes.
[0015]
The rotating body 4 has a circular shape when viewed from the front, and is rotatably supported by a shaft 4a provided at the center thereof. As shown in FIG. 4, the shaft 4 a is supported by a bearing portion 17 provided on the base 2. A plurality of holders 5,... Are attached to the rotary body 4 serving as a delivery device at equal intervals along the outer circumference of the holder. The holder 5 is formed as a cup-shaped cylinder whose upper end is open, and a material is fitted and held therein.
[0016]
A shutter 6 is provided in each of the intervals between the plurality of holders 5. The plurality of shutters 6,... Have a shutter surface 6 a having a circular arc cross section at the same level as the upper end portion of the holder 5, and the shutter surface 6 a closes the lower end portion of the carry-in chute S during the movement of the holder 5. It is supposed to be. The holder 5 and the shutter 6 can be formed integrally with the rotating body 4, but if the holder 5 and the shutter 6 are detachable from the rotating body as in the illustrated example, the number and dimensions of the holders can be reduced. Convenient to change.
[0017]
A bypass 12 is provided on the side of the rotating body opposite to the chute S. The bypass 12 is a groove-shaped passage provided in the frame 12a, and is connected to the starting end portion of the transport conveyor C by a conveyor (not shown). The bypass 12 is a retreat path through which the material B passes when an abnormality occurs in the forging press, which is a subsequent process, and the material B discharged from the holder is again supplied to a heating furnace or the like.
[0018]
A pulley 16 a is attached to one side of the shaft 4 a, and the pulley 16 a and a pulley 16 b attached to the rotating shaft of the servo motor 14 installed on the gantry 3 of the conveyor C are connected by a belt 15. In the present embodiment, the holder 5 has a cup shape, but the holder 5 may move to a predetermined position while holding the material and can be transferred to the forging press side which is a subsequent process. For example, like the holder of the said patent document 1, you may hold | maintain and isolate | separate a raw material by opening and closing a chuck | zipper.
[0019]
Next, operation | movement of this raw material supply apparatus 1 is demonstrated. As shown in FIG. 1, the material B conveyed by the conveyor C is in a state where one holder 5 of the rotating body 4 constituting the delivery device is waiting at the lower end (material receiving position) of the carry-in chute S. , It descends along the carry-in chute S from the end of the conveyor C and fits in the holder 5. When a signal from the forging press side, which is a subsequent process, is received, the servo motor 14 is activated, and rotational power is transmitted to the shaft 4a through the pulley 16b, the belt 15, and the pulley 16a. Thereby, the rotating body 4 rotates until the subsequent holder is located at the material receiving position. By this rotation, the holder 5 that has received the material first moves to a predetermined delivery position D and stops.
[0020]
In this embodiment, since the servo motor 14 is used as the power source of the delivery device 4, even when intermittent rotation is performed, the impact at the start and stop of the operation can be reduced, and the weight of the material and the forging press can be reduced. There is an advantage that the material transfer speed can be freely adjusted according to the production tact on the side. Instead of intermittently rotating the rotating body, the rotating body may be continuously rotated at a speed at which the material can be received and delivered. In this case, the rotation of the rotating body may be controlled so that the holder is decelerated to a predetermined speed at the material receiving position and the delivery position, and moved at a relatively high speed in other sections.
[0021]
The material B transferred to a predetermined delivery position is sandwiched between chucks (not shown) of the transfer device and sent to the forging press side. During this time, a new material B is received in the subsequent holder 5. When the material B in the holder 5 located at the material delivery position is taken out and sent to the forging press side, the rotating body 4 further rotates in the same direction by one pitch (for the interval between the holders), and the new holder 5 shoots. While reaching the material receiving position immediately below S, the holder 5 that previously received the material moves to the material delivery position.
[0022]
As shown in FIGS. 1 and 2, during the rotating operation of the rotating body 4, the shutter surface 6 a of the shutter 6 provided in the interval portion between the holders approaches (slidably contacts) the lower end portion of the carry-in chute S. ), The lower end portion of the carry-in chute S is always closed by the shutter 6, and the material B conveyed by the conveyor C afterwards does not fall below the supply device 1. It will wait in the carrying-in chute S. When the new holder 5 reaches the lower end of the carry-in chute S, the standby material B is fitted into the holder 5 and when the signal from the forging press is received, the rotating body 4 starts to rotate again. Repeat the above operation.
[0023]
When an abnormality occurs on the forging press side, which is a subsequent process, the material is not delivered even if the rotating body 4 reaches the material delivery position due to an abnormality occurrence signal generated from the forging press side. Since the rotating body 4 continues to rotate at a predetermined cycle, the material B held in the holder has its own weight (or its own weight and centrifuge) from the holder onto the bypass 12 when the holder is turned downward from the horizontal. Released). For this reason, generation | occurrence | production of the secondary trouble by a raw material being forcibly supplied to the forging press which has stopped can be prevented. In addition, the raw material discharged | emitted through the bypass 12 is sent back to a heating furnace (in the case of hot forging) again, and is reheated.
[0024]
When the forging press side returns to a normal state, the material is received into the holder 5 and delivered to the subsequent process by the transfer device by the normal rotation of the rotating body 4. If a servo transfer device is used as the transfer device, it can be in an emergency retreat state so that the rotating body 4 and the transfer device do not interfere with each other when an abnormality occurs, thus preventing a collision accident between the transfer device and the rotating body. It is effective in doing.
[0025]
The material supply apparatus 1 according to the present invention receives a material B, which is sent from a heating furnace (in the case of hot forging) or the like by a conveyor C, and descends a carry-in chute S, by a holder 5 and transfers it to a predetermined delivery position. In the meantime, since the shutter 6 integral with the holder 5 keeps closing the lower end portion of the carry-in chute S, there is no possibility that the subsequent material B falls outside. In addition, when an abnormality occurs on the forging press side, the material held in the holder is released only by the rotation of the rotating body, so that there is no fear that it is forcibly supplied to the subsequent process.
[0026]
Although the example which uses the raw material supply apparatus of this invention as a raw material supply apparatus for a forge press was specifically demonstrated above, it cannot be overemphasized that this raw material supply apparatus can be used for uses other than a forge press. In the above embodiment, a rotating body provided with a plurality of sets of holders that receive the material B and convey it to a predetermined position and a shutter that closes the lower end of the carry-in chute intermittently rotates in a predetermined direction. The material is received and delivered, but in some cases, the material may be received and delivered while continuously rotating.
[0027]
【The invention's effect】
As is clear from the above description, the material supply device according to the present invention includes a plurality of sets of holders that receive and hold the material and shutters that keep closing the lower end opening of the carry-in chute during the transfer of the material. Since they are arranged on the same circumference at intervals, the drive unit can be unified, and the configuration of the entire apparatus becomes simple. In the event of an emergency, the material can be discharged to the bypass simply by continuing to rotate the rotating body without delivering the material. Compared with, the control system can be simplified.
[Brief description of the drawings]
FIG. 1 is a front view showing a material receiving state of a material supply device.
FIG. 2 is a front view illustrating a material conveyance state of the material supply device.
FIG. 3 is a front view illustrating a material delivery state of the material supply device.
4 is a side view of FIG. 1. FIG.
FIG. 5 is a plan view of a rotating body.
FIG. 6 is a front view showing a material discharge state of the material supply device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Material supply apparatus 2 Base 3 Base 4 Rotating body 5 Holder 6 Shutter 12 Bypass 14 Servo motor B Material (billet)
S Carrying chute C Conveyor

Claims (1)

A succeeding apparatus that holds a material (B) that is provided between the carry-in chute (S) provided at the terminal end of the transport conveyor (C) and the succeeding apparatus and descends the carry-in chute (S) by a holder. of a material feeding device for transferring to a receiving position (1), said workpiece feeder (1) is to hold pre-Symbol accepting material (B) is formed as a cup-shaped cylindrical body upper end is open that a plurality of holders (5), provided alternately and a plurality of shutters (6) for closing the lower end opening of the loading chute (S) in the interval portion of the holder (5) along the outer periphery The rotating body (4), the driving means for rotating the rotating body (4) holding the plurality of holders (5) and the plurality of shutters (6) in a predetermined direction, and receiving the material from the holder of the rotating body A transfer device for supplying to a subsequent device, Together configured to transfer to the delivery position of the material by the rotation of the rotating body to the transfer device (D), if an abnormality occurs in the subsequent device side, the signal emitted from the succeeding apparatus, said transfer device the holder but by Rutotomoni delivery is such not performed of the material into the transfer device by an emergency evacuation state that does not interfere with the rotating body (4) (B), the rotation of the rotating body (4) is continued (5) are held in the material (B), characterized in that the holder (5) is when it is directed downward relative to the horizontal line, which is configured to so that emitted by its own weight or its own weight and centrifugal force material Feeding device.

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