JP2585659Y2 - Turret punch press - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turret punch press in which a mold is prevented from floating during operation.

[0002]

2. Description of the Related Art In a conventional turret punch press, an upper turret and a lower turret are rotatably provided on a press body, and a number of dies are mounted on the turret in a circumferential direction. When punching a plate-shaped work, the upper and lower turrets are simultaneously rotated to index the die to be used to the punching position, and then the upper die (punch) is hit by the hitting mechanism provided at the punching position. The work is punched between an upper die and a lower die (die).

[0003]

[Problems to be Solved by the Invention] In the turret punch press as described above, if the mold is not properly mounted, the mold may rise from the turret due to the impact applied to the mold during operation. When the turret is indexed and rotated without noticing, the rising mold and the striker collide,
Problems there Ru, such as mold and the striker from being damaged. Take
To improve the defect, for example, Japanese Utility Model Publication No. 62-8895
As shown in the report, a lifting prevention member is provided above the turret.
To prevent the punch from rising above its normal height.
A turret punch press has also been proposed. However
In the turret punch press of the above publication, the mold is replaced
The rise prevention member is in the way and it takes time to replace the mold.
As a result, the operating rate of the turret punch press decreases,
There are problems such as a drop in productivity. The idea is
To improve conventional problems.
Prevents the mold from floating inside, and when replacing the mold
Is a turret pad where the lifting prevention member does not interfere.
To prevent breakage of molds and strikers, and to produce
It is intended to improve the performance.

[0004]

According to the present invention, in order to achieve the above object, a plurality of upper dies and lower dies are provided detachably in a circumferential direction of a rotatable upper turret and a lower turret.
In the turret punch press for punching a plate-like work between the upper mold and the lower mold by hitting the upper mold of the upper turret, the upper mold is positioned above the upper turret.
A lifting prevention plate for preventing lifting is provided at a smaller interval than the gap between the upper surface of the upper die and the striker, and
Open and close the lifting prevention plate located at the
The opening and closing section is provided.

[0005]

[Operation] With the above configuration, even if the upper die rises due to an impact during operation, etc., the lifting is restricted by the lifting prevention plate, and the upper die upper surface does not rise above the impactor lower surface. Damage caused by interference between the upper die and the striker can be prevented beforehand, and
At the time of replacement, the opening / closing part of the floating prevention plate is opened upward
Since the floating prevention plate does not get in the way,
The mold can be exchanged in a short time.

[0006]

[Embodiment] An embodiment of the present invention will be described in detail with reference to the drawings. In the figure, reference numeral 1 denotes a press body, which has an upper turret 2 and a lower turret 3 which are rotated synchronously, and a number of molds 4 are detachably mounted in the circumferential direction of these turrets 2 and 3. . The mold 4 is formed of an upper mold 4a and a lower mold 4b, and the upper mold 4a is hit by a striker 5a of a striking mechanism 5 provided at a punching position A.
The plate-shaped work 6 can be punched between the upper die 4a and the lower die 4b. In the figure, 7 indicates the work 6
The XY carriage moves in the −Y direction and positions the work 6 at the punching position A.

On the other hand, in the figure, reference numeral 10 denotes a mold lifting prevention device provided above the upper turret 2, which has a donut-shaped lifting prevention plate 11. The lifting prevention plate 11 is divided into two parts from the center. One is on one side of the press body 1 and the other is on the other side.
A gap a smaller than the gap δ between the striker 5a and the upper surface of the upper die 4a is provided on the lower surface of the floating prevention plate 11 and the upper surface of the upper die 4a mounted on the upper turret 2 in FIG. It is formed as shown in FIG.

Further, the floating prevention plate 11 attached to the setup table 13 used at the time of mold replacement is further divided to form an opening / closing portion 11a. One end of the opening / closing portion 11a is hinged at one end. By lifting a handle 15 attached to the bracket 12 and provided on the other end side, the opening / closing portion 11 a can be opened and closed about the hinge 14 in the vertical direction. An interlock limit switch 17 is provided in the vicinity of the hinged portion of the opening / closing portion 11a. When the opening / closing portion 11a is open, the interlock works to rotate the upper and lower turrets by two and three times. I cannot do it. In the figure, reference numeral 19 denotes a turret cover which covers the periphery of the upper and lower turrets 2 and 3.
Some can be opened and closed.

Next, the operation will be described.
When exchanging the mold 4 mounted on the mold 3, the mold 4 to be exchanged is located at the mold exchange position B,
The upper and lower dies 4a and 4b are exchanged by opening the opening / closing portion 11a of the upper die 11 upward. When replacing the molds 4 at a plurality of locations, the above operation is repeated. Next, when the exchange of the mold 4 is completed, when the opening / closing section 11a is closed, the interlock limit switch 17 is turned on, the interlock is released, and the upper and lower turrets 2, 3 can be indexed and rotated. The die 4 used in this state is indexed to the punching position A.

When the indexing of the mold 4 is completed, a start button (not shown) is pressed to start a punching operation.
Since the striker 5a strikes the upper die 4a from above and lowers the upper die 4a, the work 6 can be punched between the upper die 4a and the lower die 4b. Also, the upper mold 4 may be inadequately mounted due to insufficient mounting of the mold 4 or an impact during operation for other reasons.
Even when a rises, the upper surface of the upper die 4a is limited by the lower surface of the rise prevention plate 11 and does not rise above the lower surface of the striker 5a.
Even when the index 3 is rotated by indexing, it is possible to prevent the floating upper mold 4a and the striker 5a from interfering with each other and being damaged.

On the other hand, when the mold is replaced, the upper
Even when a is not properly mounted, the upper surface of the upper die 4a may be higher than the lower surface of the striker 5a. However, at this time, when the opening / closing portion 11a of the lifting prevention plate 11 is closed, the opening / closing portion 11a is not completely closed, so that the interlock remains operating. Thereby, the upper and lower turrets 2, 3
Since the index rotation cannot be performed, breakage of the mold 4 and the like can be prevented, and at this time, "the mold 4 is not set correctly" on a monitor (both not shown) of the NC device.
By displaying such information, the operator can be notified. Further, if the opening / closing section 11a has a structure having high rigidity and strength in advance, the mold 4 can be closed when the opening / closing section 11a is closed.
It is also possible to correct defective mounting.

[0012]

[Effects of the Invention] As described in detail above, the present invention provides a floating mold above the upper turret at a distance smaller than the gap between the upper surface of the mold and the striker so that the mold during operation can be lifted. Even if it rises, the rise is restricted by the above-mentioned rise prevention plate, so that the upper surface of the mold does not become higher than the lower surface of the impactor. Thus, when the turret is indexed and rotated, it is possible to prevent the floating mold from interfering with the striker and damaging both. Also located at the mold change position
An opening / closing part that opens and closes in the vertical direction is provided on the lifting prevention plate.
Therefore, when the mold is changed, the lift prevention plate may be in the way.
No, this allows efficient mold exchange in a short time
As a result, the operating rate of the turret punch press increases,
It can be improved, and close the opening and closing section near the opening and closing section.
Interlock limit to detect and release interlock
If a metal switch is provided, the mold
If the closing part does not close completely, the interlock works and sagging occurs.
Incorrect mounting of the mold due to the inability to operate the hot punch press
Damage to a mold or the like can be prevented beforehand.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a turret punch press according to an embodiment of the present invention.

FIG. 2 is a side view of a turret punch press according to an embodiment of the present invention.

FIG. 3 is a perspective view of a floating prevention device provided in a turret punch press according to one embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a positional relationship between a floating prevention plate, a mold, and a striker.

FIG. 5 is a cross-sectional view showing a positional relationship between an opening / closing portion of a floating prevention plate and a mold.

[Explanation of symbols]

2 ... upper turret, 3 ... lower turret, 4a ... upper mold, 4b ...
Lower die, 5a: striker, 6: work, 11: floating prevention plate, 11a: opening / closing part, 17: limit switch for interlock.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B21D 28/34 B21D 28/36

Claims (2)

(57) [Scope of request for utility model registration] An upper turret 2 and a lower turret 3 which are rotatable.
A plurality of upper dies 4a and lower dies 4b are detachably provided in a circumferential direction of the turret 2, and an upper die 4a of the upper turret 2 is attached to a striker 5a.
In the turret punch press for punching the plate-shaped work 6 between the upper die 4a and the lower die 4b by hitting the upper die 4a, the upper die 4a floats above the upper turret 2.
When the floating prevention plate 11 for preventing the upward movement is provided at an interval smaller than the gap δ between the upper surface of the upper die 4a and the striker 5a.
The lifting prevention plate 11 located at the mold replacement position B
A turret punch press provided with an opening / closing portion 11a that opens and closes in a vertical direction . 2. In the vicinity of the opening / closing portion 11a of the floating prevention plate 11.
The interlock is released by detecting the closing of the opening / closing section 11a
Interlock limit switch 17 is provided.
The turret punch press according to claim 1 .