KR101141233B1 - A trimming die - Google Patents

Abstract

An object of the present invention is to provide a punching die which can obtain a product having high punching accuracy without deformation of a large base material.

The punching type according to the object of the present invention as described above is formed with a narrow groove for inserting the cutting blade 1 and the punching type having a base material 2 and a cutting blade 1 fitted into the narrow groove when viewed from above. In (8), at least two side surfaces of the base material 2 facing each other are reinforced with reinforcing members 5 and 6, so that the edge of the cutting edge 1 is kept horizontal.

Seat, punched, large punched, side reinforcement

Description

Punching Type {A TRIMMING DIE}

1: A is a top view which shows one Embodiment (Example 1) of the punching type of this invention, FIG. 1B is sectional drawing in the XX line of FIG. 1A, and FIG. .

2A and 2B are perspective views of the corner members in Example 1 as viewed from the outside (a) and inside (b), respectively.

Figure 3 is an enlarged perspective view of the punching edge of Example 1, Figure 3a is the shape of the base material only, Figure 3b is the shape when the corner member is coated on the base material, and Figure 3c is the L-shaped angle Indicates the shape of.

Fig. 4A is a plan view showing another embodiment of the punching mold of the present invention (Example 2), and Fig. 4B is a perspective view of the punching corner member.

5A is a partial cross-sectional perspective view of the case where an F-shaped pillar material is used, and FIG. 5B is a partial cross-sectional perspective view of the case of using a C-shaped angle (Example 3).

6 is a front view showing an example of the configuration of a corner of a base material when no corner member is used.

7 is a perspective view of a conventional punching type.

FIG. 8A is a front view when the punching die is fixed to the press surface plate, and FIG. 8B is a schematic front view when the punching base material is deformed in the press surface plate.

≪ Description of reference numerals &

1: cutting edge 2: base material

3: the end of the blade 4: home

5: L angle 5 ': F shaped pillar material

5 ": square angle 6: corner member

7: screw 8: punch type

10: press plate (upper) 11: fixed clamp

12: Press plate (bottom)

The present invention relates to a trimming die for taking a sheet-like material such as a plastic sheet or a corrugated sheet into a desired shape. In particular, in the large punching die, it relates to a punching die having high punching accuracy by preventing deformation of the base material generated during a work such as transportation or a mold working process and preventing the horizontality of the blade tip from being disturbed.

A conventional punching type will be described with reference to the drawings.

7 is a perspective view showing a conventional punching type. Conventionally, as a punching type for taking a sheet-like material such as corrugated cardboard or plastic sheet into a desired shape, a base material (2) made of a wooden board such as a plate-like body (herein referred to as a base material), for example, a veneer board, etc. The punching die 8 which provided the narrow groove | channel 4 which penetrated into this, and inserted the cutting blade (large blade) 1 in the narrow groove | channel 4 and is fixed is used. (3) is the cutting edge of the cutting blade (1). In order to maintain the accuracy of the punching, the cutting blade 1 is fitted into the narrow groove 4 so that the blade tip 3 is horizontal (see Japanese Patent Laid-Open No. 6-226482 (Fig. 4 on page 4 and Fig. 4 on page 3)). ).

The size of the punching mold varies depending on the size of the punching product, but in recent years, the enlargement of the punching type has been progressed, and the need for punching work with the punching mold has been increased.

As such a punching product, the flat panel etc. of a liquid crystal film are mentioned, for example.

When the punching die is enlarged, the length of one side of the punching die may exceed 1000 mm and a punching precision of 0.1 to 0.2 mm may be required.

As shown in Fig. 8A, the punching die 8 is fixed to the upper press surface 10 of the press by the downward cutting blade 1 fixed by the fixing clamp 11, so that the punching work is performed, but the cutting die 1 is cut in the center by the large punching die. The weight of the blade is applied, and deformations as shown schematically in Fig. 8 (b) are likely to occur. When the punching die 8 is deformed at the time of the punching work, the punching precision is lowered and it is not suitable for the punching work requiring the above-described precision.

In addition, when the punching die is enlarged, deformation occurs in the base metal during manual operation, including transportation after inserting the cutting blade, and in this case, the horizontality of the blade tip may be disturbed. While maintaining the precision of the punching operation, the horizontal maintenance of the blade tip is essential, and it is necessary to prevent deformation of the base metal in work such as transportation.

In press machines, the punching die is fixed in the frame of the support (see Japanese Patent Application Laid-open No. Hei 10-94999). In this case, however, the punching die in the state where the support is removed may be moved. It cannot be said to be maintained. Moreover, it is preferable that the press machine which does not use a support body is common, and the punching type itself is reinforced.

The present invention is to provide a punching type that can obtain a product with high precision of the punching operation without deformation of the base metal even if large.

The present invention solves the above problems by reinforcing the side surfaces of at least two of the four sides of the base material by using metal or the like to prevent deformation of the base material generated during the punching work process or transportation. That is, this invention has the following structures.

(1) In a punching die having a narrow groove for fitting a cutting blade and having a quadrilateral shape as viewed from above (blade end direction) and a cutting blade fitted in the narrow groove, at least two side surfaces of the base material facing each other are formed. The punching type, characterized in that the blade edge horizontal of the cutting blade is maintained by being reinforced with a reinforcing member.

(2) The punching type, characterized in that the sides of all four sides of the base material are reinforced with a reinforcing member.

(3) The reinforcing member is a metal strip, an L-shaped pillar member (an L-shaped pillar member having a cross section, or a steel being referred to as an L-shaped angle, a mountain steel, etc.), or a c-shaped pillar member (cross section) This 'c' shaped pillar, steel is characterized by including any one of the 'c' angle, the grooved steel) and the F-shaped pillar (cross section of the F-shaped) Punching type.

(4) The length of one side of the base material in the longitudinal direction is 500 mm or more, and at the same time, the error of the length of the corresponding part of the product with respect to the reference line of the length of 300 mm or more arbitrarily determined in the designed shape is within 0.1%. Punching type.

In addition, the "designed shape" in (4) is a predetermined shape to be punched, and is normally shown in the drawings. The "reference line" is arbitrarily determined such as long side, short side, and diameter. When these are compared with drawings and products, it means that the error is within 0.1%. "Punching precision" is expressed in mm, and in terms of this, for example, an error with respect to a reference line of 300 mm length in the drawing is 0.3 mm or less in the product. These values can be calculated | required by measuring the blade edge | tip of a punching type, or the punched sheet with a measuring instrument.

The punching type of the present invention is characterized by having a quadrilateral base material in which a narrow groove for fitting a cutting blade is formed and a cutting blade fitted in the narrow groove, and the side of the base material being reinforced with a reinforcing member. The cutting blade is called a big knife or a thompson knife and is not particularly limited as long as it is used for this type of punching.

The material of the base material is not particularly limited, but it is a material that is well used for light weight in a large punching mold and is easily deformed, and has a large effect of the present invention, for example, wood veneer such as veneer. The shape of the base material should be a quadrilateral (usually a rectangle or a square) as seen from above, and since it is easy to deform as a large size, the punching type which is 500 mm or more in length of the long side of a base material is preferable. In addition, the thickness of the base material is not particularly limited, but is preferably 9.0 to 20 mm. If such a groove is provided with a narrow groove and the cutting blade is inserted in the narrow groove, there is no particular limitation on other parts, and an elastic body such as rubber is attached around the narrow groove so that the punched product or the residue is easily separated from the punched mold. The gas blowing mechanism may be provided or the resin may be injected and fixed around the cutting blade.

The reinforcement should be carried out at least on two opposite sides of the base material, which are two sides (sides parallel to the body seen in the body in Fig. 8 (a)) which are not in contact with the clamps of the press surface. Alternatively, two sides in the long direction may be reinforced. In case of reinforcing only two sides, the punching type is not overly heavy and manufacturing cost is reduced. When the four sides are reinforced, the degree of reinforcement is too high, and deformation of the base metal during transportation is further prevented.

In addition, in the case of large punching type, the base material may not be formed of one plywood or the like, but may be used by adding two or more sheets. However, the reinforcement of the side has the advantage of reinforcing such a seam.

The material of the reinforcing member used for reinforcing is preferably a metal, and can be appropriately selected from iron, steel, aluminum and the like. In addition, the shape of the reinforcing member should be exactly in contact with the side of the base material, for example, it is selected from the band plate, L-shaped pillar material, c-shaped pillar material and F-shaped pillar material, the band plate, L-shaped pillar material, c-shaped pillar material, F-shaped The reinforcement strength is high in the order of the column material. Instead of the F-shaped pillars, two L-shaped pillars may be arranged in the same shape. These thicknesses are appropriately determined by the size of the base material, the weight of the cutting blade, the material of the reinforcing member, and the like, but 1.0 to 0.4 mm is preferable, and the length of the reinforcing edge is preferably set to a length that can be reinforced from end to end. In this case, when reinforcing three or four sides, the reinforcing members of the two sides are in contact with the corners, but the angles made by the reinforcing members of the two sides are fixed to maintain the angle of the edge of the base material (usually a right angle). For example, a corner member of the same angle as the edge of the base material is first coated on the edge of the base material, and a reinforcing member of each side is attached thereto, or a part where the reinforcing member of each side is in contact with the edge of the base material is fixed. For example, the method of.

The reinforcing member may be fixed by any method as long as it is securely fixed to the side of the base material. For example, a screw, a screw, a nut, or the like can be used. It may also be bonded with an adhesive or the like.

According to the punching die of the present invention having the above-described configuration, it is possible to obtain a product having extremely high punching accuracy and close to the shape of the drawing, for example, in the punching die having a length of one side in the long direction of the base material of 500 mm or more, It is also possible to make the error of the length of the said part of the product with respect to the reference line of 300 mm or more length arbitrarily determined in shape within 0.1%. It is 0.3mm in terms of punching precision, but the limit of punching precision of punching type is said to be 0.1mm, and it can be seen that punching can be performed with very high precision.                     

The punching type of the present invention can be used without particular limitation for punching of sheet-like materials, and can be used for punching of plastic sheets or PET films.

Example

Hereinafter, an example of a punching mold according to the present invention will be described in detail with reference to the drawings, but the present invention is not limited thereto.

Example 1

Fig. 1 (a) is a plan view showing one embodiment of the punching type according to the present invention. A cutting blade 1 having a height of 23.6 mm is placed in a narrow groove of a square base material 2 (18 mm thick veneer plywood). In the fitted punching die 8, four side surfaces of the base material 2 are reinforced with four L-shaped angles 5.

The corner portion is fixed so that the L-shaped angle 5 abuts at right angles using a corner member 6 having a right angle side. The L-shaped angle 5 to the base material 2 and the corner member 6 is fixed using the screw 7. (B) is sectional drawing in the X-X line | wire of (a). The L-shaped angle 5 may be used in the reverse direction as shown in Fig. 1C.

The shape seen from the inside and inside of the corner member 6 is shown in perspective with FIG. 2 (a), (b). FIG. 3 is a perspective view illustrating the disassembled configuration of the corner portion of the base material 2, and the corner member 6 is coated on the corner part of the base material 2 cut in as shown in FIG. As shown in Fig. 3 (c), the L-shaped angle 5 is maintained at right angles by overlapping and fixing the L-shaped angle 5 with a screw or the like.

And without using the corner member in the corner portion, as shown in part of the front view in Fig. 6 screwed to the base material using the L-shaped angle 5 and the L-shaped angle 5 in the same shape as the L-shaped groove inserted in the end (7) It is also possible to fix the shape directly.

Example 2

4A is a plan view of another embodiment in which the corner member 6 is replaced with the one shown in perspective in FIG. 4B. The same reference numerals as in FIG. 1 mean the same.

As shown in FIG. 3A, the punching base material 2 shown in FIG. 4A is also cut into the shape of the angle 5 and the corner member 6, and each member is inserted and fixed with the screw 7. As shown in FIG.

Example 3

FIG. 5A is a partial cross-sectional perspective view of the case where an F-shaped pillar material 5 '(steel) is used instead of the L-shaped angle 5 in FIG. 1. Similarly to the L-shaped angle 5, the F-shaped pillar material 5 'may be used in the vertical direction.

5B also shows a partial cross-sectional perspective view of the case where the U angle 5 "is used. The U angle 5" may also be used in the vertical direction opposite to that of FIG. 5B or may be used to reinforce the upper and lower sides and the side surfaces of the base material 2. You may use it in the direction.

Test Example

PET film with the punching type of the configuration of Example 1 (Fig. 1) and the conventional punching type (Fig. 7) (comparative example) as the shape of a cutting blade in which two rectangular pieces of 378 mm x 631.5 mm were punched by one press. The product obtained by punching out was compared. And the shape in the rectangular figure has one recessed part of predetermined depth in the predetermined position of each side. The punching accuracy required for this product is less than 0.30 mm for all baselines described below.

The result of the comparison between the length of the long side and the short side and the length of the product is shown in Table 1, and it can be seen that the punching type of Example 1 can be punched with much higher precision. In addition, 19 baselines (length 1.0 mm to 631.5 mm) including the long side and the short side shown in Table 1 were compared with the drawing and the product. In all cases, 0.09 mm or less and the second surface were all 0.05 mm or less, far below the permissible punching accuracy. That is, in the product of the punching type of the Example, the error was 0.1 mm or less for the baseline of 1 mm or more and the error was 0.1% or less for the baseline of 300 mm or more.

On the other hand, in the comparative example, there existed three parts from 0 to 0.28 mm in the 1st surface, 0.02 to 0.59 mm in the 2nd surface, and more than 0.3 mm of punching precision allowable in the 2nd surface.                     

Design value (mm) Actual value (mm) Deviation (mm) error(%) Example 1 1 side 631.50 631.59 0.9 0.014 2 sides 631.53 0.03 0.004 Comparative example 1 side 631.77 0.27 0.042 2 sides 632.09 0.59 0.093 Example 1 1 side 378.00 378.01 0.01 0.002 2 sides 378.03 0.04 0.010 Comparative example 1 side 378.28 0.28 0.074 2 sides 378.23 0.23 0.060

The punching type according to the present invention has at least two sides of the opposite side of the base material reinforced with a reinforcing member, so that there is no deformation of the base material occurring after fixing to the press surface or during transportation, and even when a large product is punched out. You can get it.

Claims (4)

In the punching die having a narrow groove for fitting the cutting blade and having a quadrilateral upward and one side length of 500 mm or more, and a cutting blade fitted in the narrow groove, when viewed from above, All sides of the four sides of the base material is reinforced with a reinforcing member made of metal, the blade type of the cutting blade is characterized in that the level of the cutting edge is maintained. The method of claim 1, The reinforcing member is punched type, characterized in that it comprises any one of a metal band, L-shaped pillar material, U-shaped pillar material and F-shaped pillar material. delete delete

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