JP3103517B2 - Sheet die cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet die-cutting apparatus, and more particularly to a sheet die-cutting apparatus for punching a hole having a predetermined shape obliquely to a sheet surface.

[0002]

2. Description of the Related Art Conventionally, a sheet die-cutting apparatus has been used for punching cardboard, cardboard, or synthetic resin sheets into a required shape.

[0003] This type of sheet die-cutting device includes a surface plate and a movable plate opposed to the surface plate, and a punching die is attached to one of them, and a face plate is attached to the other. The sheet is punched into a required shape between the punching die and the face plate by relative vertical movement, and holes or the like of various shapes are punched.

[0004] As a punch used in the sheet punching apparatus, a Thomson blade, in which a punching blade is planted upright in a through-hole formed in a wooden flat base plate, is generally used. For punching, the cutting edge is turned at right angles to the sheet surface and punched.

[0005]

By the way, as a component of an automobile or the like, for example, a thick surface layer member made of a synthetic resin sheet or the like is stretched on a floor plate made of an iron plate, and holes formed in the floor plate and the surface layer member. In some cases, another member may be obliquely penetrated.

Here, in order to minimize the gap (play) between the hole formed in the floor panel and the surface member and the penetrating member,
It is desirable that the shape of the hole is adjusted to the shape of the penetrating member, and the hole formed in the thicker surface layer member is an inclined hole directed in a direction corresponding to the inclination of the penetrating portion of the penetrating member.

Further, as a surface member of a dashboard of an automobile, for example, one synthetic resin sheet having a wood grain pattern is used.
Molded three-dimensionally according to the surface shape of the dashboard,
In some cases, a hole having a required shape is formed in a necessary portion of the formed synthetic resin sheet.

However, in the above-mentioned general-purpose sheet die-cutting apparatus, a Thomson blade having a punching blade implanted upright with respect to the flat base plate is used. It is very difficult to punch a hole (inclined hole) oblique to the sheet, and a special punching die in which a punching blade is obliquely implanted in the base plate is required. Also,
It is also very difficult to punch holes of a required shape in different directions in required portions of the synthetic resin sheet formed three-dimensionally as described above.

[0009]

SUMMARY OF THE INVENTION Therefore, the present invention uses a general-purpose punch having a punching blade implanted upright on a base plate,
It is an object of the present invention to provide a sheet punching apparatus which can punch a punching hole obliquely with respect to a sheet without difficulty.

[0010]

According to a first aspect of the present invention, there is provided a cutting die having a surface plate, a movable plate opposed to the surface plate, and having a punching blade on one of the surfaces. In the sheet die punching device, the sheet is punched into the required shape between the die and the face plate by the relative vertical movement of the surface plate and the movable plate with the face plate attached to the other side. Each of the boards is provided with an inclined table, and a punching die and a face plate are attached to opposite inclined surfaces of both the tilting tables, and the punching die is slidably arranged in the vertical direction on the inclined surface. A lifting spring is arranged between the table and the table, and the sheet is sandwiched between the punch and the face plate.
The sheet is punched by sliding the punching die toward the base of the inclined surface against the spring force of the pull- up spring by the relative approaching movement of the platen and the movable platen .

Here, a punching die and a face plate are respectively attached to opposed inclined surfaces of an inclined table attached to the surface plate and the movable plate, and the relative approach movement ( vertical movement) between the surface plate and the movable plate. Make sure that the entire cutting edge of the punching die contacts the face plate at the same time .
You .

The inclination angle of the inclined surface of the inclined table is appropriately set in accordance with the punching direction (horizontal direction) of the hole punched in the sheet.

[0013] In the above configuration, in the punching of the sheet,
The blanking die that separates the blanking die from the face plate and slides on the inclined surface is set so that the sheet is sandwiched between them while being positioned at the tip side of the inclined table. Next, when the platen and the movable platen are moved relatively close to each other, the face plate is brought into contact with the upper surface of the sheet and
And the force is applied to the bottom of the seat.
Started cutting into the sheet by being hung by the cutting edge of the punching blade
I do. At the same time, the punching die faces downward through the cutting blade
Is applied, the punching die slides to the base side of the inclined surface of the inclined table, and the sliding of the punching die toward this base causes the punching die and the face plate to move closer to each other in the horizontal direction. result,
The cutting edge of the punching blade cuts through the inclined sheet horizontally .

Here, the movement required for the cutting blade of the punching blade to cut through the inclined sheet horizontally occurs because the punching die slides on the inclined surface of the inclined base toward the base side. It is required that the cutting die to be pulled up to the tip side of the inclined table before the work. This lifting is performed by a pulling spring disposed between the punching die and the inclined table. The punching die slides toward the base of the inclined surface against the spring force of the pulling spring, and the sheet is punched.

When the punching operation of the sheet is completed and the platen and the movable platen are relatively moved apart from each other, the punching die and the face plate are separated from each other, and at the same time, the punching die is returned to its original position by the lifting spring, that is, the inclined base. To the tip of the inclined surface to prepare for the next punching operation.

Further, as the punching die, a punching blade bent in accordance with the slot is planted upright in a through-hole provided in a wooden flat base plate, and the cutting blade is placed on the base plate. A general-purpose Thomson blade that has been brought into contact can also be used.
As in the invention described, it is preferable that the punching die is formed by implanting a punching blade upright around a punching hole provided in the flat base plate, and the cutting blade of the punching blade is exposed on the base plate. .

With this configuration, the punching operation of the sheet is finished, and the punching chips fall from the hole of the base plate into the inclined table, thereby facilitating the work of removing the punching chips.
Continuous punching work becomes possible.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

In the drawings, FIG. 1 is a sectional view of a main part of a sheet die-cutting apparatus, and FIG. 2 is a front view of a main part of the sheet die-cutting apparatus.

The sheet punching apparatus 1 according to the present invention includes a surface plate 2 and a movable plate 3 facing the surface plate 2, and is attached to the surface plate 2 by a relative vertical movement of the surface plate 2 and the movable plate 3. Die punch 4
The sheet A is punched into a required shape between the movable platen 3 and the contact plate 5 attached to the movable platen 3. The basic configuration is a known configuration. Therefore, detailed description of the configuration and operation of the main body of the sheet die-cutting device 1 will be omitted.

In the present invention, the inclined tables 6 and 7 are respectively provided at the attachment portions of the cutting die 4 and the face plate 5 to the surface plate 2 and the movable plate 3.
The bases of both the inclined tables 6 and 7 are attached to the surface plate 2
And the movable platen 3 are firmly fixed by using appropriate stoppers, and the inclined surfaces 6a, 7a of both the inclined tables 6, 7 are opposed to each other.

The cutting die 4 is slidably disposed in the vertical direction on the inclined surface 6 a of the inclined table 6, and the inclined surface 7
The face plate 5 is fixed to a, and the entire cutting edge 8a of the punching blade 8 of the punching die 4 is simultaneously brought into contact with the face plate 5 by the relative vertical movement of the surface plate 2 and the movable platen 3.

The punching die 4 has a punching blade 8 planted upright around a punching hole 4b formed in a flat base plate 4a. The cutting blade 8a of the punching blade 8 is projected onto the base plate 4a. I have.

The inclination angles of the inclined surfaces 6a and 7a of the two inclined tables 6 and 7 are appropriately set in accordance with the punching direction of the holes punched in the sheet A , that is, the horizontal direction . Further, in the embodiment, the punching die 4 is slidably disposed on the surface plate 2 side and the face plate 5 is fixed on the movable plate 3 side, but these may be reversed. In short, any one of the die 4 and the face plate 5 may be slidably provided on the inclined surfaces 6a and 7a of the inclined tables 6 and 7.

On both sides of the inclined surface 6a on which the cutting die 4 is provided, a guide plate 9 for guiding the vertical movement of the cutting die 4 is erected, and a long hole 10 is formed on the guide plate 9 in parallel with the inclined surface 6a. The guide pin 11 projecting from the side surface of the punch 4 is inserted through the elongated hole 10, and one end of a pull-up spring 12 is fixed to the end of the guide pin 11 outside the guide plate 9, The other end of 12 is fixed to the surface of the guide plate 9 at the tip end side of the inclined base 6, and the pulling spring 12 urges the punching die 4 in the direction of pulling up the die 4 toward the tip end side of the inclined base 6.

In this manner, the punch 4 is normally pulled up to the tip of the inclined base 6 so that the guide pin 11 is
The abutment die 4 is in contact with the upper end, and the punching die 4 slides toward the base side of the inclined base 6 against the spring force of the pulling spring 12.

In the above configuration, for example, when punching an inclined hole in a sheet A such as a thick surface layer member stretched on a floor plate of an automobile or the like, as shown in FIG. 3 is lifted, and in a state where the punch 4 and the face plate 5 are vertically separated from each other, the sheet A is inserted between them, and the cutting edge 8a of the punching blade 8 of the punch 4 is applied to a predetermined hole at the lower surface of the sheet A. When the movable platen 3 is moved downward, the face plate 5 is brought into contact with the upper surface of the sheet A to push the sheet A as shown in FIG.
When the punch 4 hits the lower surface of the sheet A
Cut into the sheet A by being hung on the cutting edge 8a of the cutting blade 8
To start. At the same time, the cutting edge 8 of the punching blade 8 is
a, a downward force is applied via the cutting die 4 to the inclined surface 6.
a, it is pushed downward and slides toward the base side of the inclined surface 6a against the spring force of the pull-up spring 12, and the movement of the cutting die 4 moves the cutting die 4 and the face plate 5 closer to each other in the horizontal direction. The cutting blade 8a of the punching blade 8 deepens the cut in the surface of the sheet A and cuts through the inclined sheet A horizontally as shown in FIG. Thus, as shown in FIG. 6, in which the cutting edge 8a of the punching blade 8 starts a cut from a viewpoint of sheet A lower surface, survive until the point b of the sheet A top, this
During this time, the punching die 4 moves closer to the face plate 5 with a downward movement, and as a result, the inclined hole A 'is punched out so as to cut through the inclined sheet A horizontally .

As shown in FIG. 7, for example, a hole B 'having a required shape is formed at a required portion of a three-dimensionally formed synthetic resin sheet B, which is used as a surface member of an automobile dashboard. Even in the case of punching, the setting procedure of the sheet B is the same as that of punching the inclined hole A 'in the thicker sheet A as described above, by setting the cutting edge 8a of the punching blade 8 of the punching die 4 on the lower surface of the sheet B. When the punch is set and punched in accordance with the contour of the hole to be punched, holes can be punched in various directions at necessary places of the three-dimensionally formed sheet B. However, in order to punch holes in such a three-dimensionally formed thin sheet B in different directions, the punching die 4 is fixed to the inclined table 6 attached to the surface plate 2 and the movable plate 3 When the face plate 5 is slidably mounted on the attached inclined table 7, the punch B does not move with respect to the inclined table 6, so that the stability of the sheet B at the time of punching is improved.

[0029]

The present invention is embodied in the form as described above. According to the present invention, the cutting die and the face plate are attached to the base plate and the movable plate which move up and down relatively, and Inserting the base and arranging the punching die slidably in the vertical direction on the inclined surface of the inclined base, use a general-purpose punching die and forcibly punching out the inclined holes for thick sheets. In addition, even a single three-dimensionally formed sheet can be easily punched in various directions at required locations. It is a remarkable increase.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a sheet die-cutting device.

FIG. 2 is a front view of a main part of the sheet die-cutting device.

FIG. 3 is an explanatory diagram of a sheet punching procedure.

FIG. 4 is an explanatory diagram of a sheet punching procedure.

FIG. 5 is an explanatory diagram of a sheet punching procedure.

FIG. 6 is a cross-sectional view of an inclined hole of a thick sheet.

FIG. 7 is a sectional view of a thin sheet formed three-dimensionally.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Sheet die-cutting apparatus 2 ... Surface plate 3 ... Movable platen 4 ... Die-cutting die 4a ... Flat base plate 4b ... Drilling hole 5 ... Face plate 6 ... Inclined table 6a ... Inclined surface 7 ... Inclined table 7a ... Inclined surface 8 ... Stamping blade 8a: Cutting blade 9: Guide plate 10: Slot 11: Guide pin 12: Pull-up spring A: Partly thick sheet B: Three-dimensional thin sheet

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B26F 1/40 B26D 1/04

Claims (2)

(57) [Claims] 1. A surface plate and a movable plate opposed to the surface plate, and a punching die having a punching blade is attached to one of them, and a face plate is attached to the other, and a relative position between the surface plate and the movable plate is provided. In a sheet die punching device that punches a sheet into a required shape between a punching die and a face plate by moving up and down, an inclined table is provided on each of the surface plate and the movable plate, and the punching die is placed on the opposite inclined surface of both inclined tables. With the face plate attached, the punching die is slidably arranged in the vertical direction on the inclined surface, a pulling spring is provided between the punching die and the inclined base, and a shim is provided between the punching die and the face plate.
The slide die slides toward the base of the inclined surface against the spring force of the pull- up spring by the relative approach movement of the surface plate and movable platen
Sheet punching apparatus characterized by being allowed by punching the sheet. 2. A punching die is characterized in that a punching blade is implanted upright around a punched hole provided in a flat base plate, and the cutting blade of the punching blade projects on the base plate. The sheet cutting device according to claim 1.