JP4499632B2 - Automatic press equipment - Google Patents

Description

  The present invention relates to an automatic press facility. More particularly, the present invention relates to an automatic press facility that automates the process of supplying billets to a multi-process mold of a press with a charging device, sequentially feeding the billets with a transfer feeder, and discharging processed products with a discharging device.

  Conventionally, forging has been selected as a highly productive plastic working method, and various automated facilities have been proposed. Generally, automated equipment for forging is composed of a charging device installed between a heater and a forging press, a transfer feeder that conveys between processes in the press, and a discharging device that takes out the forged product to the outside of the press.

Since the conventional charging device is a device that conveys the billet without gripping it, such as a chute or conveyor, the posture of the billet is not stable during the conveyance. B) To the clogging in the charging device or b) To the transfer feeder This causes troubles such as poor delivery due to poor posture during delivery.
Therefore, in order to achieve stability, chutes and conveyors were sometimes dedicated to billet sizes, but in this case it was necessary to replace the chutes and conveyors according to the billet size change. This was the biggest cause of lost productivity and increased productivity. In addition, this has been a cause that the operating rate does not increase compared to other molding machines (for example, casting machines, machine tools, etc.).

  In addition, the transfer feeder that transports between processes in the press is a system that transports the workpiece in a gripped state, and in recent years, the transport in the press has become quite stable and flexible due to the advent of the AC servo transfer feeder. It has become. Further, since the discharge device only needs to have a function of taking out the product out of the press, its stability is hardly a problem and a conveyor or the like is often employed.

In the conventional charging device, the main functions required and the reason why the operating rate does not increase are as follows.
Accurate positioning is required to pass the billet to the transfer feeder, which is the inter-process transfer device in the press. However, if the conveyor is used in the charging device, positioning is performed at the end of the charging process. A device is required. The functions required for this positioning device are as follows.
a) Can be easily handled even when the billet size is changed. b) Sufficient durability against the adverse environment on the entry side of the press. c) Reject the supplied billet. Have functionality

However, the entry side of the hot forging press is a very bad environment. For example, the scale generated in the billet may be peeled off and deposited on the positioning device, or the positioning device may be subject to thermal expansion or malfunction due to the mold lubricant.
Moreover, a drive box with a built-in motor for driving the transfer feeder, a screw rod slide guide, etc. is mounted on the forging press entry side, but the charging device is installed below the avoidance of this drive box. The required installation space is very narrow.
The current situation is that a charging device that can achieve satisfactory stability has not been realized due to such a severe environment and a narrow space condition.

In addition, in the charging device, the billet is rotated not only in the case where the billet is aligned so that the axis of the billet coincides with the conveying direction in the press, but also in the press entrance, a) 90 ° in the horizontal plane in the case of side hitting. B) In the case of vertical hitting, there is a case where it is rotated 90 ° in the vertical plane and supplied to the press. In the case of vertical strike, if the billet aspect ratio is outside the proper range, stable 90 ° rotation itself is difficult. Therefore, it is more difficult to realize a charging device for both vertical and horizontal driving.
In particular, in a hot forging press, scales generated from billets are deposited around the transport line, making this situation even more difficult.

In the above situation, an example that has been actually used as the prior art is shown below.
1) Charging device dedicated to vertical driving A method using a conveyor and a delivery device is generally used as a charging device dedicated to vertical driving (Patent Document 1).
However, this patent document 1 has the following problems.
a) There is a limit to the geometric condition of the billet that can be stably conveyed.
b) Even in the billet that can be transported, there is a portion that needs to be replaced for each predetermined size region in order to stabilize the transport. Furthermore, this replacement operation is very difficult.
c) Regular maintenance and cleaning are inevitable due to the influence of scale and mold lubricant deposited around the charging device.

2) Charging device for both vertical and horizontal forging If there is a charging device that can be used for both vertical and horizontal forging, it is very convenient. As an example, there is an articulated charging device designed to be very small (Patent Document 2). .
The technique of this patent document 2 is attached to the lower part of the transfer feeder box on the press entry side. Therefore, the size of the billet is limited due to space problems, and the billet transportation up to several kg is practically limited.

JP 2003-31369 A JP-A-8-174134

  In view of the above situation, the present invention is capable of stable conveyance regardless of the billet dimensions and shape, does not require replacement work corresponding to the size, does not require frequent maintenance, An object of the present invention is to provide an automatic press facility that can be used for both horizontal and heavy billets.

The automatic press facility according to the first aspect of the invention is a forging press equipped with a multi-process mold, and operates a front feed bar and a front feed bar arranged in front of a pass line for supplying and discharging billets to the multi-process mold. A space is provided between the device and a rear feed bar and a rear feed bar actuating device disposed behind the pass line, and the clutch and brake of the forging press are provided on the press exit side as a combine type. A robot-type charging device capable of directly supplying the billet from the outlet side of the heating furnace to the press inlet side, on the pass line, is a wall surface on the inlet side of the forging press body and above the feed bar operating device. It is attached on the wall surface of this.

According to the first invention, since the charging device can directly supply the material from the outlet side of the heating furnace to the press inlet side, the chute installed on the heating furnace and the press inlet side in the conventional apparatus can be omitted.
Moreover, since the charging device is mounted on the wall surface above the feed bar actuating device in the forging press main body, scales scattered from the mold and the material are not attached, so that frequent maintenance is not necessary. .
Further, since the charging device is of a robot type, the following effects can be obtained.
a) The degree of freedom of movement between the hand and the arm is high, so that it can be transported regardless of the billet size and shape, and switching between vertical strike and horizontal strike is possible, eliminating the need for replacement work corresponding to the size.
b) Since the hand and the arm are securely held, the billet can be stably conveyed .
c) Since a charging device having a large robot size can be installed, the upper limit of the billet weight can be increased.

Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view of an automatic press facility according to an embodiment of the present invention. FIG. 2 is a side view of the forging press of FIG. FIG. 3 is a plan view of the automatic press facility of FIG.
P is a forging press, Cg is a charging device, and Dg is a discharging device.
The forging press P is an automated press equipped with a multi-process mold, and the transfer feeder that conveys the billet between the multi-process molds must be a front and rear split mold.

First, the configuration of the transfer feeder will be described with reference to FIGS.
Reference numeral C indicates four press columns, reference numeral 1 indicates a front feed bar, and reference numeral 2 indicates a rear feed bar. The front feed bar 1 and the rear feed bar 2 are supported by the feed bar actuating device S so as to be separated from each other with the multi-step mold M interposed therebetween and parallel to each other.
The feed bar actuating device S supports both ends of the front feed bar 1, and supports a pair of left and right front feed bar actuating devices 10 and 10 controlled to operate in synchronization with each other, and both ends of the rear feed bar 2. And a pair of left and right rear feed bar actuating devices 20 and 20 controlled to operate in synchronization with each other.
The pair of rear feed bar actuating devices 20 and 20 and the pair of front feed bar actuating devices 10 and 10 are disposed at positions separated from each other with the pass line L of the workpiece interposed therebetween. In other words, the corresponding front and rear feed bar actuating devices 10 and 20 are arranged so that there is a space between them.

  Thus, when the forging press is viewed from the side (FIG. 4), a space is formed on the workpiece pass line L. Such a structure is called front-back division. It is a feature of the present invention that a multi-degree-of-freedom robot type charging device Cg and discharging device Dg are provided in the space.

Next, the basic configuration of the feed bar operating device S will be described. In addition, since the front feed bar actuator 10 and the rear feed bar actuator 20 have the same configuration, the following description will be made without distinction.
The front / rear feed bar actuators 10 and 20 include a base frame 11 fixed to a column C of a forging press. The base frame 11 is provided with an elevating frame 17, and the elevating frame 17 is attached to the base frame 11 through a guide rail disposed along the vertical direction so as to be movable up and down.
The base frame 11 is provided with a lifting screw type moving mechanism 12 for moving the lifting frame 17 up and down.

  The elevating frame 17 is provided with a clamping screw type moving mechanism 32 for moving the advance frame 41 along the guide rail. When the screw-type moving mechanism 32 for clamping is operated, the advance frame 41 moves along the screw shaft for clamping. Therefore, the front feed bar 1 moves toward and away from the rear feed bar 2 together with the advance frame 41. Can do.

Further, the advance frame 41 is provided with an advance screw type moving mechanism 42 for moving the front feed bar 1 parallel to the axial direction and horizontally.
For this reason, if the advance screw type moving mechanism 42 is operated, the front feed bar 1 can be moved back and forth.

  Further, as shown in FIG. 1, the feeding claws 1a and 2a for gripping the billet are attached to the mutually opposing surfaces of the feed bars 1 and 2 in a number corresponding to the number of dies in the multi-step mold. Yes.

  As described above, the forging press in the present invention has large spaces on both the left and right sides of the forging press main body on the pass line. The charging device Cg is installed on the entry side of this space, or the charging device Cg is installed on the entry side and the discharge device Dg is installed on the exit side.

Next, an embodiment of the present invention will be described.
As shown in FIGS. 1 to 3, in this embodiment, the charging device Cg is attached on the side surface (wall surface which is a structural member) on the entry side of the main body of the forging press P. Further, the discharge device Dg may also be attached on the exit side surface (wall surface which is a structural member) in the main body of the forging press P.
If the charging device Cg is attached as in this embodiment, not only the installation space can be saved, but also the problem due to the scale is almost eliminated. This effect is the same when the charging device Cg and the discharging device Dg are attached. Generally, a brake is attached to the side of the press entry side, so it is difficult to attach a charging device to this part. However, if the clutch and brake are combined and installed on the press exit side, installation space will be secured on the entry side. It becomes possible to do.

In the present invention, the charging device Cg is a robot having a hand having a function and a degree of freedom for reliably holding billets of various shapes, and an arm having a degree of freedom capable of moving the billet to the press entry side. I just need it. As long as it has such a function and freedom of conveyance, there is no structural limitation, and any of the following types of robots can be employed.
1) Cartesian coordinates (stretch-stretch-stretch-hand)
2) Cylindrical coordinate form (rotation-expansion-expansion-expansion-hand)
3) Polar coordinate type (rotation-turning-telescopic-hand)
4) Articulated type • Articulated polar coordinate type (rotation, turning, turning, hand)
-Articulated cylindrical coordinate type (extension / retraction / turning / turning / hand)
-Articulated Cartesian coordinates (extension / retraction / turning / turning / hand)

Carrying operation of the billet, initiated exit side or these furnaces is carried out until the supply location to the body of the forging press P (e.g., -1 step or 0 step). If the billet is directly conveyed from the exit side of the heating furnace, there is an advantage that a chute or the like can be omitted.

At the end point of the transport operation, the billet may be left in a horizontal strike position or may be left in a vertical strike position.
Alternatively, at the press entrance, the billet is supplied to the press by a) rotating 90 ° in a horizontal plane in the case of horizontal hitting, and b) supplied to the press by rotating 90 ° in a vertical plane in the case of vertical hitting. It may be a dual-purpose type. In the case of the vertical and horizontal combined type, it is preferable that the hand can rotate around the axis. If the billet can be switched between the horizontal position and the vertical position by the movement of the arm, the hand rotation function is not necessarily required.

  The discharge device Dg only needs to have a function of discharging the forged product from the press delivery side, and the same structure as that of the charge device Cg can be adopted. When the discharge device Dg is a robot type having the same capability as the charge device Cg, the discharge device Dg can have the same robot function as the charge device Cg on the input side, so that synchronous operation is possible. The total efficiency from supply to discharge can be improved.

  Since the above-mentioned charging device Cg can freely extend and retract the arm, it is not necessary to install it as close as possible to the main body of the forging press P as in the conventional charging device, and it can be installed apart from the scale. Troubles caused by metal mold lubricants are drastically reduced.

  Also in this embodiment, the billet can be directly conveyed to a position where it can be gripped by the transfer feeder, and the conveyance limitation of billet dimensions is eliminated. Also, troublesome setup change work is unnecessary. As a matter of course, it is easy to switch between vertical and horizontal strikes, and both can be used.

  In the above embodiment, the discharge device Dg is also a robot type like the charge device Cg. However, only the discharge device Dg may be a conventional conveyor type.

It is a front view of the automatic press equipment concerning one example of the present invention. It is a side view of the forging press of FIG. It is a top view of the automatic press installation of FIG. It is a top view of the transfer feeder in the automatic press equipment of FIG. FIG. 4 is a side view of the transfer feeder of FIG. 3.

P Forging press Cg Charger Dg Discharger

Claims (1)

In a forging press equipped with a multi-process mold, a front feed bar and a front feed bar actuating device arranged in front of a pass line for supplying and discharging billets to the multi-process mold, and behind the pass line A space is provided between the rear feed bar and the rear feed bar actuating device.
The clutch and brake of the forging press are provided on the press exit side as a combine type,
A robot-type charging device capable of directly supplying a billet from the outlet side of the heating furnace to the press inlet side is a wall surface on the inlet side of the forging press main body on the pass line, and above the feed bar operating device. Automatic press equipment, characterized by being mounted on top.

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