KR20060054696A - Mold of punch device and punching method - Google Patents

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to provide a porous punching die apparatus and a porous punching method for a plate that can freely puncture a plurality of holes on a thick plate using a small press capacity and a mold, thereby greatly reducing the processing cost of the plate. have.

To this end, the present invention is a punch holder that moves up and down by the operation of the cylinder, a plurality of punches supported by the punch holder and installed to drill a plurality of holes in the sheet when descending, and the upper portion of the punch holder Shank plate is installed to secure a plurality of punches,

A lower die installed to allow an insertion space of a plate between the punches below the plurality of punches;

In the punching die processing apparatus of the plate material comprising a punch hole formed to allow the airtight passage of the punches in the lower die to function as a lower cutting knife when the punches are lowered,

The plurality of punches are divided into at least two groups, and their lengths are set differently for each group, so that holes are punched in the plate step by step with a time difference when the punches fall.

Perforated punching machine, punch multi-stage operation

Description

Perforated punching die apparatus and perforating punching method to a sheet | seat {Mold of punch device and punching method}

1 is a cross-sectional view showing a porous punching die apparatus according to the present invention

2 is an exploded perspective view of parts of a porous punching die apparatus according to the present invention

Figure 3 is a view showing a one-step punching operation of the porous punching die apparatus according to the present invention

4 is a conceptual diagram of a multi-stage porous punching according to the present invention

5 is a step-by-step view showing a multi-stage punching operation according to the present invention.

FIG. 6 is a view showing an example of a busbar plate used in a distribution panel

7 is a conventional porous punching die

※ Explanation of codes for main parts of drawing

1: Punching Molding Device 2: Punch Holder

3 (P ₁ , P ₂ , P ₃ ): Punch 4: Shank Plate

5: bolt 6: plate

7: lower die 8: die plate

9: bolt 10: spacing

11: punch guide plate member 12: space (plate inserting space)

13 punch hole 14 punch hole

15: scrap discharge hole 18: piston rod

19: scrap

D ₁ , D ₂ , D ₃ : Hole (punch ball) L ₁ , L ₂ , L ₃ : Punch length

The present invention relates to a porous punching die apparatus and a porous punching method for use in punching a thick plate, which requires a large force, such as bus bar processing.

In the case of the bus wave 30 used as a member for connecting a high-voltage power line of an electric system such as a transformer or a distribution panel, as shown in FIG. 6, various numbers of connection holes 31 are required according to the specification. Likewise, holes are punched by using a punching punching device 42 having a plurality of punches 41.

The conventional porous punching die device 42 as shown in the drawing has a plurality of punches 41 installed in the punch holder 43 in accordance with the position and the number of the holes 31 to be processed, and then punch holes ( The lower die 45 having the 44 formed therein is installed, and the punch holder 43 is lowered so that the punches 41 penetrate through the bus bar plate 30 placed on the lower die 45 to descend. At this time, the generated scrap is to fall through the punch hole 44 of the lower die 45 and the scrap discharge hole 47 of the die plate 46.

However, when the plate 30 is thick and the number of holes 31 to be drilled is large, a large force is required to drill the holes, so that the capacity of the press machine (hydraulic cylinder, etc.) is increased and the mold itself can withstand a large load. There was a problem that the overall processing cost is greatly increased, such as thickening.

Accordingly, the present invention has been proposed in view of the above-mentioned problems, and its object is to provide a plate material capable of freely drilling a plurality of holes on a thick plate using a small press capacity and a mold, thereby greatly reducing the processing cost of the plate. To provide a porous punching die apparatus and a porous punching method.

In order to achieve the above object, the apparatus of the present invention includes a punch holder which moves up and down by operation of a cylinder, a plurality of punches supported by the punch holder and installed to drill a plurality of holes in the sheet when descending, A shank plate installed to fix the plurality of punches to an upper portion of the punch holder;

A lower die installed to allow an insertion space of a plate between the punches below the plurality of punches;

In the punching die processing apparatus of the plate material comprising a punch hole formed to allow the airtight passage of the punches in the lower die to function as a lower cutting knife when the punches are lowered,

The plurality of punches are divided into at least two groups, and their lengths are set differently for each group, so that holes are punched in the plate step by step with a time difference when the punches fall.

And the punching method to the plate member of the present invention for achieving the above object is a plurality of punches stored in the punch holder to move up and down by the cylinder is lowered toward the lower die a plurality of plates supplied on the lower die In the method of punching a porous mold to punch holes,

By dividing the length of the plurality of punches into at least two groups and setting them differently so that the punches descending for punching reach the plate with a time difference, the plurality of holes are divided into groups and perforated in multiple steps with a time difference. It is characterized by.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a cross-sectional view showing a porous punching die apparatus according to the present invention, Figure 2 is an exploded perspective view of parts of the porous punching die apparatus of the present invention, Figure 3 shows a one-step punching operation of the porous punching die apparatus according to the present invention Figure 4 is a conceptual diagram of a multi-stage porous punching according to the present invention, Figure 5 is a step-by-step view showing a porous punching operation according to the present invention.

In the drawings, the porous punching die apparatus of the present invention is indicated by the reference numeral 1.

Porous punching mold apparatus 1 and elevating movement by operation of the hydraulic cylinder (not shown) is provided with a punch holder (2), a plurality of punches in the punch holder (2) (P _1, P _2, P ₃ : Representative reference numerals 3) are fitted by being fitted from the upper side to the lower side, and the shank plates 4 are fixed to the upper part by engaging the punch holder 2 by the bolts 5. .

The plurality of punches 3 are divided into at least two or more according to the number of holes to be drilled, and divided into three groups, for example, in the illustrated embodiment to set the lengths differently for each group (P ₁ , P ₂ , P ₃ ). For example, suppose that 9 holes D ₁ , D ₂ , and D ₃ must be drilled in the plate 6, as shown in FIG. 4, 9 punches P ₁ , P ₂ , and P _3. ) Divide the length into three groups and set the lengths to L ₁ (100mm), L ₂ (90mm), and L ₃ (80mm), and the length difference between punches (L ₁ -L ₂ , L ₂ -L) for each group. ₃ ) is set to each about 10mm, which sets the difference in the length of the punches so that the stepped punching operation is made in consideration of the maximum thickness or normal working thickness of the boss bar plate 6 to be punched.

The lower die 7 is provided directly below the punch holder 2, which is fixed to the die plate 8 positioned below it with a bolt 9 and fixed on the work table.

In addition, both sides of the lower die 7 are provided with a gap guide 10, and a punch guide plate member 11 is installed at an upper portion thereof, and a space 12 formed by the gap holder 10 is formed of a sheet material. The insertion space 12 is to be formed.

The punch guide plate member 11 is provided with punching guide holes 13 for accommodating the plurality of punches 3, and the punch guide holes 13 are always fitted with lower ends of the punches 3. This will guide the correct lowering operation of the punch (3).

In addition, punch holes 14 are formed in the lower die 7. The punch holes 14 pass through an airtight passage of the punches 3 when the punch 3 is lowered, and the passage of scrap that is punched and sheared from the plate. It is to allow, and to form a lower blade corresponding to the punch (3) to form the upper blade.

In addition, the scrap discharge holes 15 which are slightly larger than the diameter of the punch hole 14 are disposed in the die plate 8 in contact with the punch hole 14 so that the scraps cut and dropped by the punch hole 14 are discharged smoothly downward. Formed.

Here, the notation 16 is a bolt for fixedly connecting the punch guide plate member 11 and the spacing holding 10 and the lower die 7, 17 is a plate width adjustment pin.

According to the present invention, for the convenience of description, nine holes D ₁ , D ₂ , and D ₃ are drilled in the busbar plate 6, and for drilling these nine holes D ₁ , D ₂ , and D ₃ . The punch 3 is divided into three stage groups (P ₁ , P ₂ , P ₃ ) so that the punch length difference of each group is set to be maintained at 10 mm, but the center 3 is punched in one stage as shown in FIG. 4. The punch L ₁ for punching the two holes D ₁ is 100 mm long, and the holes D ₂ located at each corner are 90 mm for the punch L ₂ punched in two steps, and the other two holes ( D ₃ ) set the length of punch L ₃ to 80 mm to punch in the last three steps.

The plate material 6, which is a busbar material, is inserted into the plate inserting space 12, and when the cylinder is operated after the plate material 6 is inserted, the piston rod 18 is lowered, and accordingly, the punch including the punch 3 The holder 2 is lowered.

When the punch 3 is lowered, first, the longest L ₁ punch reaches the surface of the plate 6 so that three holes D ₁ are drilled first in a first step. Accordingly, when the L ₁ punch (P ₁ ) hits the surface of the plate (6), the area that the L ₁ punch touches by the punch hole (D ₁ ) to form a lower blade under it, the cylindrical shear is scraped (19) Is generated and falls down through the scrap discharge hole 15 and is discharged, and then the punch holder 2 is further lowered, so that the L ₂ punch P ₂ reaches the surface of the plate 6 and is plated in two stages. When hitting the surface, four holes D ₂ located at the corners are drilled.

In the last three steps, when L ₃ punch (P ₃ ) reaches the plate 6 and punches, two holes D ₃ are formed at the center left and right, and all nine holes are sequentially drilled over three steps. will be.

On the other hand, the present invention by mounting the punch guide plate member 11 so that the plate member 6 is inserted through the space formed by the spacing holder 10, even if the installation of the spring for the buffer role in the conventional mold apparatus is omitted. There is no crowd.

Herein, the punching is performed by dividing nine holes into three steps. For example, the present invention is not limited thereto, and it is obvious that the punch length difference or group formation is not limited. As long as the punch is lowered to perforate the plate, it is found that it belongs to the scope of the present invention.

As described above, when the plurality of punches are installed in a mold to drill a plurality of holes in a thick plate, the plurality of holes are divided into at least two groups so that their lengths are different so that the operation of one mold apparatus is performed. By punching in multiple stages with time difference between the punches reaching the sheet, the small press capacity and compact mold device make it possible to punch many holes in the thick plate, greatly reducing the plate processing cost and the installation area of the device. There is also an effect that is reduced.

Claims (4)

A punch holder moving up and down by the operation of the cylinder, a plurality of punches supported by the punch holder and installed to drill a plurality of holes in the sheet when descending, and fixing the plurality of punches above the punch holder. Shank plate installed to A lower die installed to allow an insertion space of a plate between the punches below the plurality of punches; In the punching die processing apparatus of the plate material comprising a punch hole formed to allow the airtight passage of the punches in the lower die to function as a lower cutting knife when the punches are lowered, And punching the plurality of punches into at least two groups and setting their lengths differently for each group. The method of claim 1, The lower die is provided with a punch guide plate member at an upper portion thereof with a gap retaining hole to form a space for inserting the plate, and the punch guide plate member is formed with punch guide holes for guiding the lowering of the punch. Perforated punching mold apparatus. The method according to claim 1 or 2, And a die plate provided with a scrap discharge hole having a diameter larger than that of the punch hole to guide discharge of the punched scraps on the bottom surface of the lower die. In the porous die punching method, a plurality of punches stored in a punch holder moving up and down by a cylinder are lowered toward a lower die to drill a plurality of holes in the plate material supplied on the lower die. The plurality of punches are divided into at least two groups, and the lengths are set differently for each group so that the punches descending for punching arrive at the plate with a time difference, thereby dividing the plurality of holes into groups. A punching method for punching into a plate, characterized in that the perforation in multiple stages.

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