JPH03285724A - Press apparatus - Google Patents

Abstract

PURPOSE:To easily work a workpiece by moving a working punch in such a direction that it approaches to a cutting edge, cutting the workpiece between the cutting die for the cutting edge and the cutting part of the working punch, thereafter, moving the punch further and bending the workpiece. CONSTITUTION:When the working punch 10 moves to the left direction, the work 1 is cut between the cutting die 3a for the cutting edge 3 and the cutting part 10b of the working punch 10. Further, when the working punch 10 moves the right direction, the work is bent between a bending die 2a of an upper die pad 2 and the bending part 10a of the working punch 10. In this case, the cutting edge 3, too, is moved by the working punch 10 to the right direction and a scrap part 10a is left between the cutting edge 3 and the working punch 10. Thereafter, when an upper driving bar 14 rises, the working punch 10 is returned by springs 11 and the cutting edge 3 is returned by springs 4 respectively to the original positions. In this way, working of the workpiece can be performed easily.

Description

[Detailed description of the invention] [Object of the invention] (Industrial application field) The present invention relates to a press device for a motorcycle fuel tank,
The present invention relates to a press device that has a particularly simple structure and can be easily processed.

(Prior Art) Conventionally, when processing a flange portion of a two-wheeled vehicle fuel tank, the flange portion is processed using a cut mold shown in FIG. 3 and a bend mold shown in FIG. 4.

In other words, the die shown in FIG. 3 has a lower die punch on which the workpiece after drawing is placed, an upper die pad 2 that presses and holds the workpiece from one side between the lower die punch 9 and the lower die punch 9. It is equipped with

Further, a cut punch 15 having a cut portion 1.5a is provided below the upper die pad 2 so as to be movable in the horizontal direction, and the lower die punch 9 has a cut portion 1.5a and the workpiece 1.
A cut die 9a for cutting is formed.

In FIG. 3, the action of the cutting die is performed as follows. That is, when the cam driver 8 descends and presses the cut punch 5 downward, the cut punch 15 moves to the left. In this way, the workpiece 1 is cut between the cutting die 9a and the cutting portion 15a.

On the other hand, the bending die shown in FIG. 4 includes a lower die punch 9 on which the workpiece 1 after drawing is placed, and an upper die pad 2 that presses and holds the workpiece 1 from above between the lower die punch 9. We are prepared.

Further, a bend punch 16 having a bend portion 16a is provided below the upper die pad 2 so as to be movable in the horizontal direction, and furthermore, a bend die 2a for bending the workpiece 1 between the bend portion 16a and the bend punch 16 is provided below the upper die pad 2. It is formed.

In FIG. 4, the bending die functions as follows. That is, when the cam driver 8 descends and presses the bend punch 16 downward, the bend punch 16 moves to the right. In this way, the workpiece is bent between the bend die 2a and the bend portion 16a.

In this way, when the flange portion of the workpiece is processed using the cutting die shown in FIG. 3 and the bending die shown in FIG. 4, the cutting and bending steps become two steps, making the processing operation complicated.

For this reason, a method has been considered in which the workpiece is simultaneously cut and bent using a press device, as shown in FIG.

The press device shown in FIG. 5 is equipped with a lower die punch 9 on which a workpiece 1 is placed, an upper die pad 2 which presses and holds the workpiece from above between the do die punch 9, and an upper die pad 2. Bend die 2a is formed at the bottom of 2.

Further, below the upper die pad 2, a cut punch 5 having a cut portion 1.5a is provided so as to be movable in the horizontal direction. Further, between the lower die punch 9 and the cut bunch 15, a pen punch 16 having a bend portion 16a for bending the work 1 between the bend die 2a and the bend punch 16 is provided so as to be movable in the horizontal direction. Note that the pen punch 16 is provided with a cut portion 16b that cuts the workpiece 1 between the cut portions 1 and 5a.

In FIG. 5, the operation of the press device is performed as follows. That is, first, the upper die pad 2 presses the workpiece 1 on the lower die punch 9, and then the cam driver 19 descends to press the cut punch 15 and move the cut punch 15 to the left. In this way, the workpiece 1 is cut between the cut portion 15a of the cut bunch 15 and the cut portion 16a of the pend punch 16. Next, the cam driver 19 further descends and presses the bend punch drive mechanism 18 to move the bend punch 16 to the right.

In this way, the workpiece 1 is bent between the bend die 2a and the bend punch 16a.

However, in the press device shown in FIG. 5, the cam driver 19 initially moves the cut bunch punch 15 to the left, and then the cam driver 19 moves the pend punch 16 to the right. There is also the problem that the overall structure becomes complicated.

(Problems to be Solved by the Invention) When machining the flange part of a workpiece using the cutting die shown in Fig. 3 and the bending die shown in Fig. 4 as shown in the series, the cutting operation and the bending operation are two steps. This makes processing work complicated.

On the other hand, the press apparatus shown in FIG. 5 has a problem in that the entire structure becomes complicated as described above.

The present invention has been made in consideration of these points,
It is an object of the present invention to provide a press device that has a simple structure and is easy to process.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a lower die punch on which a workpiece after drawing is placed, and an upper die having a bend die at the lower end while pressing the workpiece from above between the lower die punch and the lower die punch. A cutting blade having a cutting die for cutting a workpiece is provided below the upper die pad so as to be movable in the horizontal direction, and a bending part for bending the workpiece between the bending die and the bending die is provided below the upper die pad. The press device is characterized in that a worker punch having a cut portion for cutting the workpiece between the die and the die is provided so as to be able to move toward and away from the upper mold pad and the cut blade in the water direction. .

(Function) Move the worker punch in the direction of approaching the cutter blade to cut the workpiece between the cut die of the cut blade and the cut part of the worker punch, then move the worker punch further to close the bend die of the upper die pad. Bend the workpiece with the bend part of the worker punch.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

1 and 2 are diagrams showing an embodiment of a press apparatus according to the present invention.

In FIGS. 1 and 2, the press device is configured to place a workpiece 1 after drawing and press and hold the workpiece 1 from above between a lower die punch having a horizontal surface 9a and a lower die punch 9. It is equipped with a mold pad 2. Further, a bend die 2a is formed at the lower part of the upper mold pad 2.

Furthermore, below the upper die pad 2, a cut blade 3 having a cut die 3a for cutting a workpiece is provided so as to be movable in the horizontal direction. That is, a fixing plate 7 is fixed to the lower right end of the upper die pad 2, and a support plate 5 is attached to the fixing plate 7, so that the cutting blade 3 slides on the support plate 5. . Fixed plate 7
A stopper bolt 6 is provided extending toward the cutting blade 3, and a spring 4 is interposed between the fixed plate 7 and the cutting blade 3. Furthermore, a worker punch 10 is provided below the upper die pad 2 so as to be movable in the horizontal direction. This worker punch 10 has a bending part 10a that bends the workpiece 1 between it and a bending die 2a, and a cutting die 3a.
and a cut portion 10b for cutting the workpiece 1 between the punches 1 and 2, respectively, and slide on the horizontal surface 9a of the lower die punch 9.

Further, a side plate 12 is fixed to the right end of the lower die punch 9, and a spring 11 is interposed between the side plate 12 and the worker punch 10.

In addition, in a part of the worker punch 10 on the opposite side from where the bending part 10a and the cutting part 10b are arranged, there is an inclined surface 13.
is formed, and this inclined surface 13 is connected to the cam driver 8.
It comes into contact with the pressing surface 8a of.

The cam driver 8 is fixed to a two-part drive bar 14, and the upper drive bar 4 elastically supports the upper die pad 2 via a spring 14a.

Next, the operation of this embodiment having such a configuration will be explained.

First, the workpiece 1 is placed on the upper part of the lower die punch 9, and then the upper drive bar 14 is lowered. In this case, the upper die pad 2 first comes into contact with the workpiece 1 and presses and holds the workpiece 1 between it and the lower die punch 9. Next, the pressing surface 8 of the cam driver 8
a presses the inclined surface 13 of the worker punch 10 and moves the worker punch 10 to the right.

When the worker punch 10 moves to the right in this way, first the cutting die 3a of the cutting blade 3 and the cutting portion 1 of the worker punch 10. Work 1 is cut between it and Ob. When the worker punch 10 further moves to the right, the work 1 is bent between the bend die 2a of the upper die pad 2 and the bend portion 10 of the worker punch 10 (FIG. 2). in this case,
The cutting blade 3 is also moved to the right by the worker punch 10, and a scrap portion 10a remains between the cutting blade 3 and the worker punch]O.

At the same time, step drawing forming of the workpiece 1 is performed in the A section of FIG.

Thereafter, when the upper drive bar 14 rises, the worker punch 10 and the cutting blade 3 are returned to their original positions by the spring 11 and the spring 4, respectively, and the machining operation is thus completed.

As described above, according to this embodiment, the workpiece can be cut and bent by moving the worker punch 10 to the right, so that machining operations can be easily performed. Furthermore, since the structure is such that only the worker punch is moved on the lower die punch, the overall structure can be simplified.

〔Effect of the invention〕

As explained above, the workpiece can be cut and bent by moving the worker punch toward the cutting blade. Therefore, the workpiece can be processed easily.

[Brief explanation of the drawing]

FIG. 1 is a side view showing an embodiment of the press device according to the present invention, FIG. 2 is a side view showing the state after processing, and FIG. 3 is a side view showing a conventional cutting die. FIG. 4 is a side view showing a conventional bending die, and FIG.
The figure is a side view showing a conventional press device. 1... Workpiece, 2... Upper die pad, 2a... Bend die, 3... Cut blade, 3a... Cut die, 9
...Lower die punch, 10...Worker punch, ], O
a...Bend part, 1-Ob...Cut part.

Claims (1)

[Claims] The workpiece is pressed from above between the lower die punch on which the workpiece after drawing is placed and the lower die punch, and
an upper mold pad having a bend die at the lower end; a cut blade having a cut die for cutting a workpiece is provided below the upper mold pad so as to be movable in the horizontal direction; A press characterized in that a worker punch having a bending part for bending the workpiece and a cutting part for cutting the workpiece between the cutting die is provided so as to be movable toward and away from the upper die pad and the cutting blade in the horizontal direction. Device.