JP2807952B2 - Work press equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a press apparatus for a work, and more particularly, to a method for cutting a scrap cutter from an outline cutting line by 30 mm.
mm or more below, after performing the outer shape cutting with the upper cutting edge provided on the upper die, further moving the upper die, the overhanging portion cut off with the scrap lower blade and the scrap upper blade It is configured to be cut, so that the outline punching and drilling can be performed continuously by a one-step press operation, and that sufficient strength can be secured for the upper cutting edge and the outline punching The present invention relates to a work press apparatus capable of performing a boring process on a side surface of a product very near a line.

[0002]

2. Description of the Related Art As a processing method of a plate-shaped material, a pressing process is generally used, and as shown in FIGS. 1 to 3, processing of a product 1 requiring drawing and drilling is performed by using a conventional plate-shaped material. It is put into the first mold to perform drawing processing to deform it into a box shape, and then put back into the second mold to form a hole in the upper surface portion 1e and to form the vertical wall portion 1 from the side surface portion 1a to the upper surface portion 1b.
c was cut off.

A product 1 having a hole 1e and a vertical wall 1c.
Is further poured into the third mold to process the overhang portion 1f which is unnecessary as the product 1, and similarly, is poured into the fourth mold to perform drilling of the side surface hole 1d of the side surface portion 1a. Was.

Particularly, in a product in which drawing and drilling are mixed, the drawing and the drilling cannot be performed at the same time because the drawing is performed while the plate-like material is drawn into the mold during the drawing. After completion of drawing, it was necessary to perform drilling with another dedicated die.

[0005] According to the above-mentioned conventional press working, four dedicated dies are required for each working, and there is a drawback that enormous investment is required for manufacturing the dies.

Further, since the plate material is processed while being sequentially transferred to each mold, not only a large number of processing steps are required, but also a large automatic transfer device needs to be installed when performing automatic transfer. Not only requires a capital investment, but also has the disadvantage of increasing the product cost.

Further, there is a drawback that the same number of press machines as the number of dies are required, and a large number of expensive press machines must be prepared.

In the case where the end cutting and the side surface drilling are performed by one mold, the product 1 is placed on the lower mold 2 and the upper mold 3 is lowered in the direction of arrow A in FIG. The outer cutting process of the overhang portion 1f which is an unnecessary portion of the product 1 is performed by the lower cutting edge 2a provided in the upper die 3 and the upper cutting edge 3a provided in the upper die 3.

Next, the upper mold 3 is further moved in the direction of arrow A by 2 to 5
mm lower scrap 2b provided on the lower die 2
And the scrap upper blade 3b provided on the upper die 3
f was cut into a plurality of pieces, and at the same time, the side slide punch 4 was slid in the direction of arrow B to form a side hole 1d.

However, when the upper cutting edge 3a is driven in the direction of arrow A to perform the cutting operation, a large force acts on the upper cutting edge 3a. the thickness L ₁ of the end cutting Kamigiri edge 3a at least 5
A thickness of 0 mm or more is required.

The side slide punch 4 is provided with
a, the position where the side surface drilling can be performed is conventionally located at a distance L ₂ from the outline drawing line L.
As described above, the side hole drilling can be performed only upward, that is, at least 70 mm above the outline punching line L, and the side hole 1d cannot be provided near the outline punching line L.

[0012]

SUMMARY OF THE INVENTION The present invention has been made in order to eliminate the above-mentioned disadvantages of the prior art, and has as its object to reduce at least three lines from the outline line.
Provide a scrap lower blade below 0 mm or more, cut off the overhang with the lower cutting edge of the lower die and the upper cutting edge of the upper die, perform the outline cutting process, and then further cut the upper die. 30mm
By making a configuration in which the overhang portion moved and cut off is cut into a plurality of pieces by the scrap lower blade and the scrap upper blade, drilling is performed even on a side hole provided very close to the outline cutting line. This makes it possible to continuously perform the outline punching and the side hole drilling provided very close to the outline punching line in one mold and in one process. That is.

Another object of the present invention is to make it possible to reduce the number of molds required for processing by half by the above-mentioned structure, and to thereby significantly reduce the cost of products.

Still another object of the present invention is to reduce the number of necessary press machines and the number of working steps by the above-mentioned structure, thereby significantly reducing the manufacturing cost.

[0015]

In summary, the present invention (claim 1) comprises a lower mold fixed to a table of a press machine and an upper mold slidably movable in a direction to approach and separate from the lower mold. In a work press device configured to process the plate-shaped material by pinching the plate-shaped material between, an end-cut lower cutting edge for cutting off an overhang portion that is unnecessary as a product generated by drawing. A lower mold formed and provided with a scrap lower blade for scrap cutting at least 30 mm or more downward from the lower cutting edge, and moves in a direction approaching the lower die to cooperate with the lower cutting edge. An upper die provided with an upper cutting edge for trimming the overhanging portion and a scrap upper blade for scrap cutting provided on a lower surface,
The upper die is disposed slidably in a direction perpendicular to the direction of movement of the upper die, and is driven by bringing the upper die closer to the lower die to perform a hole forming process on a side surface portion of the plate-shaped material. A side slide punch, wherein the upper die is brought closer to the lower die, and the overhanging portion of the plate-shaped material is trimmed by the upper cutting edge and the lower cutting edge to form an outer shape. After that, the upper die is further moved to cut the overhang portion cut off into a plurality of pieces by the scrap lower blade and the scrap upper blade. It is.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. 4 and 5, a work press apparatus 10 according to the present invention includes a lower die 11, an upper die 12, and a side slide punch 13.

The work press apparatus 10 is for performing end cutting and side hole drilling on a drawn plate-like material 15 to form the product 1, and is a press machine (not shown). The lower die 11 is fixed on the table of the above, the upper die 12 is attached to the ram of the press machine, and the ram is lowered while the plate-shaped material 15 is inserted between the lower die 11 and the upper die 12 to make the lower die 11 By pinching with the upper die 12, the plate material 15 is cut off (outer shape cutting) and a side surface is drilled.

The lower mold 11 is composed of a lower mold holder 14, a lower mold body 16 having a punch 16a formed into the shape of the product 1, and a scrap lower blade 17.

The lower die holder 14 is for holding the lower die main body 16 and is fixed on a table of a press machine. The lower die main body 16 is fixed at the center, and the lower die main body 16 is fixed. The scrap lower blade 17 is fixed so as to surround it.

The lower die main body 16 is for pressing the plate material 15 with the upper die 12 to perform an outer shape punching process and a side surface drilling process on the plate material 15. A punch 16a and a cutting edge 16b are formed over the entire periphery of the punch 16a, and a punch hole 16c and a press waste discharge hole 16d are formed facing the side slide punch 13.

The scrap lower blade 17 is used for cutting the overhanging portion 1f of the plate-shaped material 15 that has been cut off into a plurality of pieces so that it can be easily processed. A lower blade 17a is formed on the upper surface of the lower die holder 14 so as to surround the die body 16 and cooperate with a scrap upper blade 19b described later so as to cut the overhang portion 1f into a plurality. It has become.

The upper mold 12 is provided between the lower mold 11 and the plate-shaped material 1.
The upper die holder 18 is fixed to a ram (not shown) of a press machine, and can be moved up and down together with the ram.
Is fixed to an upper die body 19 for end cutting.

The upper die body 19 has an upper cutting edge 19a formed over the entire circumference. The upper die 12 is moved in the direction of arrow C to form a plate by the lower cutting edge 16b and the upper cutting edge 19a. The projecting portion 1 f is cut off from the product 1 by applying a shearing force to the shaped material 15.

A scrap upper blade 19b is formed on the lower surface of the upper die body 19, and a scraping force is applied to the overhanging portion 1f of the plate-like material 15 cut off by the scrap lower blade 17 to scrap the scrap. It is cut into a plurality of pieces to facilitate subsequent processing.

5, a jaw 19c for reinforcement is formed on the right end of the upper die body 19 in FIG. 5, and a force when the scrap upper blade 19b cooperates with the scrap lower blade 17 to shear the overhang 1f. The jaw 19c is formed in a bridge shape having a very large section modulus, and the upper surface 19d is fixed to the upper die holder 18.

The upper die holding member 18 is also provided with a work holder 20 having an engraved portion 20a in the shape of the product 1 formed thereon.
1, the plate-shaped material 15 is held between the lower die body 16 and the work holder 20 by the force of the spring 21.

The side slide punch 13 is shown in FIGS.
, A side hole 1d provided in a side portion 1a of the product 1.
The lower die main body 16 is slidably fitted in the direction perpendicular to the direction of movement of the ram, and is disposed so as to fit in the upper die holder 18. The hole enters into the hole 16c, and a side surface drilling process is performed on the plate-shaped material 15.

The side slide punch holder 22 is provided with an inclined cam surface 22a. The cam surface 22a comes into contact with the upper die holder 18 via a slide block 24 to be slidable in the inclined direction. It is arranged.

A return spring 23 is disposed between the upper die holder 18 and the side slide punch holder 22 in a state of being inclined by 45 degrees. Biased in the direction.

On the lower surface of the side slide punch holder 22, a slide surface 22b is provided.
4 and is slidably assembled in the left-right direction with the cam body 25 fixed thereto.

The present invention is configured as described above,
Hereinafter, the operation will be described. In FIG. 1 to FIG. 5, the plate material 15 having been drawn is inserted into the lower die body 16 and a start button of a press machine (not shown) is pressed.

The ram of the press machine descends, and accordingly, the upper die holder 18 fixed to the ram and the upper die main body 19 for end cutting work descend in the direction of arrow C. The engraved part 20 a sandwiches the plate-shaped material 15 between the lower mold body 16 and the lower mold body 16.

When the ram of the press machine further descends, the upper cutting edge 19a reaches the position of the lower cutting edge 16b, and a shearing force is applied to the plate material 15 by the both cutting edges, so that the overhanging portion 1f ends. It is cut and the outer shape punching is performed.

When the ram is further lowered by a distance L ₃ , for example, about 30 mm, the scrap upper blade 19 b is moved to the scrap lower blade 17.
Is reached, and a shearing force is applied to the overhang portion 1f whose outer shape has been cut by the scrap upper blade 19b and the scrap lower blade 17, and the overhang portion 1f is finely cut to facilitate the processing of chips.

After the end cutting of the plate-shaped material 15 is completed, the ram descends by the distance L ₃ , and the side slide punch holder 22 also attempts to descend. Since the movement is restricted, the side slide punch holder 22 slides on the cam surface 22a via the slide block 24, and compresses the return spring 23 in the direction of arrow D relative to the upper die holder 18. While moving.

That is, the side slide punch holder 22 horizontally moves in the direction of arrow E by the horizontal component of the relative movement amount in the direction of arrow D, and the side slide punch 13
Side hole 1a of the plate material 15
The side hole 1d provided in the hole is machined.

Press dust (not shown) generated by the above-described drilling process falls down in the press dust discharge hole 16d and is discharged.

[0038] After the end cutting Kamigiri edge 19a of the upper die body 19 has an end cutting operation the overhanging portions 1f, further distance L ₃ only drop scrap on blade 19b and scrap under the overhanging portion 1f and the blade 1
Since side slide punch 13 as well as divide the scrap into a plurality at the 7 was made to process the side wall holes 1d in the side surface portion 1a, the immediate vicinity of outer vent line L from the outer vent line L L ₄ only have spaced Side hole 1 provided in
d can also be processed easily and in one stroke simultaneously with the trimming.

As described above, in the step of lowering the ram, the plate material 1
After the end cutting, scraping, and side hole drilling of Step 5, the ram of the press machine starts to rise, and the side slide punch holder 22 returns to the original position by the action of the return spring 23 to prepare for the next pressing operation. Complete.

[0040]

According to the present invention, as described above, the scrap lower blade is provided at least 30 mm below the outline drawing line, and the overhanging portion is formed by the lower cutting edge and the upper cutting edge. After the outer trimming process was performed by trimming the edge, the upper die was moved further by 30 mm or more, and the overhang portion trimmed was cut into a plurality of pieces by the scrap lower blade and the scrap upper blade. In addition, there is an effect that it is possible to perform drilling even in a side hole provided very close to the outline cutting line, and as a result, it is possible to perform the outline cutting and the outline cutting line in one step with one mold. This has the effect that drilling of the side holes can be performed continuously.

With the above configuration, the number of molds required for processing can be reduced by half, and as a result, the cost of the product can be significantly reduced.

Further, with the above configuration, the number of required press machines can be reduced, and the number of processing steps can be significantly reduced, so that the production cost can be significantly reduced in this respect as well.

[Brief description of the drawings]

FIG. 1 is a plan view of a pressed product.

FIG. 2 is a front view of a pressed product.

FIG. 3 is a perspective view of a pressed product.

4 is a longitudinal sectional view of a work press device for processing a part of the product of FIG. 1 as viewed in the direction of arrows IV-IV.

FIG. 5 is an enlarged vertical sectional view of a main part of a work press device.

FIG. 6 is an enlarged vertical sectional view of a main part of a work press apparatus according to a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Product 1a Side part 1f Overhanging part 10 Work press device 11 Lower die 12 Upper die 13 Side slide punch 15 Plate material 16b Trimming lower cutting blade 17 Scrap lower blade 19a Trimming upper cutting blade 19b Scrap upper blade

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI B21D 35/00 B21D 35/00

Claims (1)

(57) [Claims] The plate-shaped material is sandwiched between a lower mold fixed to a table of a press machine and an upper mold slidably movable in a direction to approach and separate from the lower mold. In a work press apparatus configured to process a material, a bottom cutting edge for cutting off a projection that is unnecessary as a product generated by drawing is formed, and at least 30 mm or more below the bottom cutting edge. A lower mold provided with a scrap lower blade for scrap cutting, and an upper cutting edge that moves in a direction approaching the lower mold and cooperates with the lower cutting edge to trim the overhanging portion. An upper die provided with a scrap upper blade for scrap cutting on a lower surface, and the lower die is disposed on the upper die slidably in a direction perpendicular to the direction of movement of the upper die. Driven by approaching A side slide punch for making a hole in the side surface of the plate-shaped material, wherein the upper cutting edge is brought closer to the lower die, and the upper cutting edge and the lower cutting edge are used to cut the plate-shaped material. After performing the outline cutting process by trimming the overhanging part, subsequently, the upper mold is further moved to cut the overhanging part into a plurality of pieces with the scrap lower blade and the scrap upper blade. A work press device, characterized in that it is configured to be cut.