JPH06126355A - Self finger attaching and detaching method of transfer feeder - Google Patents

Abstract

PURPOSE:To make a transfer bar in a light weight and to reduce a price of a transfer feeder by attaching and detaching a finger of idle station without requiring an evacuating device. CONSTITUTION:A finger 7 of an idle station positioning at a rear side of an upright 1a is orderly stored to an upper stage of a finger storing part of an upper die 5, then a transfer bar 6 is moved until an un-clamp position. The bar 6 is shifted to a down stream side, and moved to the rear side of clamp after elevating to the height lower than the storing time of the idle station finger 7, the finger except the idle station finger 7 is stored in the lower stage of the finger storing part of the upper die 5, and un-clamped with the transfer bar 6. After all the finger 7 is stored in the finger storing part of the upper die 5, the upper and lower dies 5, 3 are pulled out to the outside of a press body 1 together with a moving bolster 2, and the die and the finger 7 for next use are respectively changed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for automatically attaching / detaching a finger detachably attached to a transfer bar of a transfer feeder.

[0002]

2. Description of the Related Art As shown in FIG. 1, a transfer feeder conventionally installed in a transfer press has a pair of transfer bars c arranged in a press body a along a work transfer direction b. A finger d for clamping a work is detachably attached at a position facing these transfer bars c. Further, these fingers d are placed on the moving bolster e together with the transfer bar c when the die is exchanged, carried out of the press main body a, and can be exchanged by an external setup. In order that the idle station fingers g provided in the idle station can also be exchanged by external setup, the idle station fingers g are provided with a retracting device h as shown in FIG. 2, and the idle station fingers g are uprighted by the retracting device h. After moving to a position where it does not interfere with, it is carried out of the press body a.

[0003]

However, in this method, since the transfer bar c must be provided with the retracting device h, the weight of the transfer bar c becomes heavy and the drive system for driving the transfer bar c becomes large in size. Since the evacuation device having a complicated structure is required, the transfer feeder becomes expensive. The present invention has been made to solve the above-mentioned conventional problems, and provides an automatic finger attachment / detachment method for a transfer feeder that enables automatic replacement of these fingers without the need for a retracting device for the fingers of the idle station. The purpose is.

[0004]

In order to achieve the above object, the present invention provides a transfer feeder for moving a work by moving a transfer bar provided in the press body in a three-dimensional direction. For the mold placed on the moving bolster that can be freely moved in and out, a finger storage unit for storing the fingers detachably attached to the transfer bar is provided, and the transfer bar is first worked in this finger storage unit. The fingers for the idle station are stored while shifting in the transport direction, and then the remaining fingers are stored in order, and then these fingers are moved out of the press body by a moving bolster together with the mold, and the next finger to be used is moved together with the mold. If the bolster is used to carry the product into the press, the operation is the reverse of the above. In which it was to be mounted to the transfer bar.

[0005]

[Operation] By the above method, even if the transfer bar is not provided with a finger retractor, the fingers for the idle station can be automatically attached and detached.

[0006]

Embodiment An embodiment of the present invention will be described in detail with reference to the drawings shown in FIG. FIG. 3 is a plan view of a three-pillar transfer press, in which two moving bolsters 2 are housed in the press body 1 so that they can be freely inserted and removed. An upper die 5 is attached to the lower surface of the slide 4 of the main body 1.

A pair of transfer bars 6 are juxtaposed on both sides of the lower mold 3 along the work transfer direction A, and a work (not shown) is clamped at a position facing these transfer bars 6. The fingers 7 are detachably attached, and the transfer bar 6 is divided into a plurality of parts in the longitudinal direction from the dividing line 6a. By dividing the transfer bar 6 from these dividing lines 6a at the time of die replacement, the moving bolster 2 and the press main body are separated. 1 can be carried out.

Next, the automatic attachment / detachment method of the fingers 7 attached to the transfer bar 6 will be described with reference to FIG. 4 and subsequent figures. First, as shown in FIG. 4, the transfer bar 6 is stopped at a standby point which is an advanced end. In this state, the interlock between the press body 1 and the transfer feeder is turned off, and the automatic die replacement is started. In automatic die replacement, the die cushion (not shown) is first lowered, and then the transfer bar 6 which has been stopped at the standby point is moved to the forced unclamp position as shown in FIG. .

In this state, the slide 4 is lowered to the bottom dead center position as shown in FIG. 6, and when the upper die 5 is superposed on the lower die 3 on the moving bolster 2, the upper die 5 is fixed to the slide 4. The upper die clamp (not shown) is unclamped, and the upper die 5 is placed on the lower die 3. Then, when the slide 4 is lifted to the standby point, the transfer bar 6 is lifted and then moved in the clamping direction as shown in FIG. 7B, so that the idle station finger 7a attached to the transfer bar 6 is moved. The finger 7a for the idle station is unclamped from the transfer bar 6 by being stored in the upper stage of the finger storage portion 5a provided in the upper mold 5.

Next, when the transfer bar 6 is again moved to the bar unclamp position as shown in FIG. 8, the transfer bar 6 is shifted to the upstream side as shown in FIG. 9 and is located behind the upright 1a until now. The idle station finger 7b is moved to a position where it does not interfere with the upright 1a. Then, in this state, the transfer bar 6 is lifted again and then moved in the clamping direction as shown in FIG. 10, and the idle station fingers 7b are stored in the upper stage of the finger storage portion 5a provided in the upper mold 5, and the transfer bar 6 is transferred. Unclamped from bar 6.

As described above, when the idle station fingers 7a and 7b located behind the upright 1a are sequentially stored in the upper stage of the finger storage portion 5a of the upper die 5,
After moving the transfer bar 6 to the unclamp position as shown in FIG. 11, the transfer bar 6 is shifted to the downstream side as shown in FIG. 12, and the transfer bar 6 is moved from this state to the idle station fingers 7a, 7a.
After being raised to a height lower than that when the b is retracted, it is moved in the clamping direction, and the idle station fingers 7a, 7
After the fingers 7 other than b are stored in the lower stage of the finger storage portion 5a of the upper die 5 as shown in FIG. 13, they are unclamped from the transfer bar 6.

After all the fingers 7 are stored in the finger storage portion 5a of the upper die 5, the upper and lower dies 5 and 3 are pulled out together with the moving bolster 2 to the outside of the press body 1, and the die and the finger 7 to be used next are respectively drawn. Exchange. Also, after carrying the metal mold and fingers 7 into the press body 1 after replacement,
By performing the operation opposite to the above method, the fingers 7 can be automatically attached to the transfer bar 6.

[0013]

As described above in detail, according to the present invention, since the finger for the idle station located at the rear of the upright can be attached and detached without the need for a retracting device as in the prior art, the weight of the transfer bar can be reduced. Become. As a result, the drive system for driving the transfer bar can be downsized, which is economical, and since a complicated retractor is not required, the price of the transfer feeder can be reduced.

[Brief description of drawings]

FIG. 1 is a plan view showing a conventional transfer press.

FIG. 2 is a perspective view showing a conventional finger retraction device.

FIG. 3 is a plan view of a transfer press for carrying out the method of the present invention.

FIG. 4 is a process chart showing an embodiment of the method of the present invention.

FIG. 5 is a process chart showing an embodiment of the method of the present invention.

FIG. 6 is a process drawing showing an embodiment of the method of the present invention.

FIG. 7 (a) is a process drawing showing an embodiment of the method of the present invention. (B) It is a flowchart showing an embodiment of the method of the present invention.

FIG. 8 is a process chart showing an embodiment of the method of the present invention.

FIG. 9 is a process chart showing an embodiment of the method of the present invention.

FIG. 10 is a process chart showing an embodiment of the method of the present invention.

FIG. 11 is a process chart showing an embodiment of the method of the present invention.

FIG. 12 is a process drawing showing an embodiment of the method of the present invention.

FIG. 13 is a process drawing showing an embodiment of the method of the present invention.

[Explanation of symbols]

1 ... Press body, 2 ... Moving bolster, 3 ... Lower mold,
5 ... Upper mold, 5a ... Finger storage, 6 ... Transfer bar, 7 ... Fingers, 7a, 7b ... Idle station fingers.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Akira Maruyama 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. (72) Teruo Yoshiura 2 Takaracho, Kanagawa-ku, Yokohama, Kanagawa Nissan Motor Co., Ltd. ( 72) Inventor Masaaki Ogawa No. 5, Yokaichi, Komatsu City, Ishikawa Prefecture Komatsu Plant, Komatsu Plant

Claims (1)

[Claims] 1. A transfer feeder for moving a work by moving a transfer bar 6 provided in the press body 1 in a three-dimensional direction, and mounted on a moving bolster 2 which can be freely moved in and out of the press body 1. The molds 3 and 5 placed on the transfer bar 6 are provided with finger storage portions 5a for storing the fingers 7 which are detachably attached to the transfer bar 6, and the transfer bars 6 are first shifted in the workpiece transfer direction in the finger storage portions 5a. While the idle station fingers 7a and 7b are stored while the remaining fingers 7 are sequentially stored, these fingers 7, 7a and 7b are stored.
b is carried out to the outside of the press main body 1 by the moving bolster 2 together with the molds 3 and 5, and the fingers 7, 7a, 7b to be used next are carried in together with the molds 3 and 5 into the press main body 1 by the moving bolster 2. An automatic finger attaching / detaching method for a transfer feeder, characterized in that the finger is attached to the transfer bar 6 in the reverse operation.