JP2570235B2 - Die moving structure in press die moving exchange system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) The present invention relates to a structure for moving a press die by exchanging a press die, and automatically changing the press die. As a system, it is used for press dies on press processing lines for brake boosters.

(Prior Art) As a conventional technique according to the present invention, when a press die moves and performs press working, an automatic press die exchange system shown in FIG. 9 is used.

That is, the rotary transport robot 3 is disposed at the center of the two press machines 1 and 2 and the rail is placed on the bolster of the press machine.
9 and 10 are provided, and knocking dies 5 and 6 are arranged on the rails.

(Problems to be Solved by the Invention) However, as shown in FIG. 10, each of the tapping dies 5, 6, 7, and 8 provided on the press machines 1 and 2 has two posts 5a and 5b for supporting the upper dies ( In the case of the front post, it becomes a hindrance at the time of conveyance), and the upper die is supported by a spring. In this way, the upper die becomes a heavy die because it becomes a two-post knocking die, especially in the drawing die. Due to the weight of the mold itself, the mold is hung and the post is severely worn, resulting in poor positioning accuracy of the upper and lower molds.

In addition, since the punch is a knocking die, the press ram hits the upper die for each punch so that noise is generated. Further, when the die is moved, the upper and lower dies are moved because the integrated weight of the upper and lower dies is applied to the die moving device. Therefore, there is a problem that a large force is required.

The present invention relates to a moving structure of a press die in which a press die is exchanged for each process and press working is performed. It is.

[Configuration of the invention]

(Means for Solving the Problems) The technical means for solving the above technical problems are as follows. That is, on the bolster of the press machine,
In a plurality of dies arranged in a laterally movable manner, rails are arranged on a bolster of a press machine, and the dies are placed. The upper dies of the dies are supported by two guide posts, and It is integrated with the lower plate provided on the rail, a support rail for supporting the upper die on the lower rail is supported by a rail bar, and further provided a lower rail dance prevention on the lower rail, A press die ram is provided with a block on the ram of the press machine, supporting the upper die of the die, and a support rail with bearings for facilitating the lateral movement of the die and a clamp for fixing the upper die. Device.

(Operation) The above technical means operates as follows.

The plurality of dies on the press table are suspended by support rails supporting the upper dies, and are laterally moved while being guided by the lower rails. When the press is operated, the work is pressed by lowering the ram. Is a device that hangs on a support rail that supports the upper die and performs lateral movement. In this case, since the needle bearing is provided at the rail contact portion of the upper mold, the lateral movement of the mold can be smoothly moved with a small force.

Further, since the mold works integrally with the press ram, a reaction spring only for the upper mold is not required, so that the pressing force can be reduced, and accordingly, the generation of noise is extremely reduced.

Example An example will be described below.

 FIG. 1 shows a mold moving structure.

Reference numeral 1 denotes a press machine, and a lower rail 13 is mounted on a bolster 10 of the press machine.
A mold I indicated by 11 having a and 11b and a mold II indicated by 12 are set together with the lower plate 14.

The lower rail 13 has a slide protrusion 15 and a lower plate 14
There is a slide groove on the back side, and the slide protrusion 15 is fitted.

The ram 16 of the press machine 1 has a block 17 for press working, and the block 17 has a rail with a needle bearing 19 for supporting the mold and facilitating the movement of the mold.
18 and a clamp 20 for holding the upper mold during processing.

Further, a support rail 24 for supporting the upper die is held on the lower rail 13 by a rail support rod 21. And support rails 24
Needle bearings to make the upper mold easier to move
The lower rail 13 is further provided with a mold play prevention block 23 for eliminating the play of the mold (I) 11 and the mold (II) 12 during press working.

 The operation of the above configuration will be described.

(1) Preparation process (Fig. 2) The press dies (I) 11 and (II) 12 are set on the lower plate 14, and the press dies (I) 11 are pressed products of brake boosters for automobiles. Is set.

(2) First die clamping process (Fig. 3) The upper die of the press die (I) 11 and (II) 12 is supported.
The mold is moved by being supported by 24. That is, the block 17 in which the press die (I) 11 is attached to the press machine ram 6 is used.
The press die (I) 11 is moved under the press ram 16 on the upper rail 18 and the clamp 20 on the block 17 clamps the upper die of the press die (I) 12.

The mold is moved by a rack provided below the molds I and II by actuation of a pin and a rack by rotation of a motor (not shown).

(3) First Mold Pressing Step (FIG. 4) Pressing of the press mold (I) 11 is performed.

(4) Completion of the first mold, unclamping process (Fig. 5) Completion of press working of the press mold (I) 11
Is canceled.

(5) Die Movement, Second Die Clamping Step (FIG. 6) The press dies (I) 11 and (II) 12 move simultaneously. At this time, the first process work 27 processed by the press die (I) 11 is held at a fixed position by a work chuck.
Therefore, the work 27 is set on the press die (II) 12.

The press machine clamp 20 clamps the press mold (II) 12.

(6) Second Mold Press Working Step (FIG. 7) Press working of the press mold (II) 12 is performed.

(7) Second die processing completion process (Fig. 8) Press die (II) 12 press processing is completed and clamp 10
Is canceled. At this time, the second process work 28 processed by the press die (II) 12 is discharged out of the die.

As described above, the mold is moved and processed sequentially.
Thus, the steps from FIG. 2 to FIG. 8 are repeatedly performed.

〔The invention's effect〕

The present invention has the following effects. That is, since the post supporting the upper die does not wear, the positioning accuracy is greatly increased with respect to the conventional tapping die, and the die movement is extremely smooth and the moving force is greatly reduced (approximately). 1/2) to do. That is, the moving force of the conventional tapping type = (50 + 50) × 0.
For 2 (coefficient of friction) = 20 kg, the moving force of this embodiment 0 = (50
X 0.2) + (50 x 0.01) = 10.05 kg. However, in this case, the friction coefficient of the rollers is 0.01.

Further, the upper die does not hit, and does not generate vibration and noise due to the clamp system.

[Brief description of the drawings]

1A is a front view of the present embodiment, FIG. 1B is a cross-sectional view taken along line A-A of FIG. 1A, and FIG. 1C is BB of FIG. 1A.
2 to 8 are explanatory views of the main parts of the respective steps of this embodiment, FIG. 9 is a plan view of the rotary robot with the rotary robot omitted, and FIG. 10 is a main part of a conventional punching die. FIG. 1 …… Press machine, 11,12 …… Die, 13 …… Lower rail, 14 ……
Lower plate, 15… Bolster, 16… Ram, 19… Bearing, 23 …… Die prevention block, 24 …… Support rail.

Claims (1)

(57) [Claims] 1. A plurality of dies are provided on a bolster of a press machine by arranging a lower rail so as to be laterally movable, and the upper die of the die is supported by two guide posts. A press die moving and exchanging system which is integrated with a lower plate provided on a side so as to be able to move laterally, furthermore, a support rail which supports the upper mold and can move laterally is provided, and the lower rail is provided with a lower mold dance prevention piece. Moving structure of the mold in.