JPH0321973Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a character-engraved board, and particularly to a character-engraved board suitable for stamping vehicle body numbers and the like.

[Conventional technology]

In automobile factories, etc., as shown in FIG. 3, a flat plate material 10 is bent into a U-shape, and a vehicle body number is stamped on the surface of a stamp seat 12 that forms a surface for stamping characters. Alternatively, as shown in FIG. 4, the flat plate material 14 is bent into a U-shape, and the substantially central part of the bent plate material 14 is further protruded, and the surface of the protruding embossing seat 16 is The vehicle body number was stamped on the vehicle. When bending the plate material 10 into a U-shape, as shown in FIG.
The plate material 10 is placed on the stands 18 and 20, and the plate material 10
A pad 22 is disposed below the pad 22, and a punch 24 is disposed above the plate 10, and the punch 24 is moved downward toward the pad 22 to bend both ends of the plate 10. The tip side of the punch 24 is formed into a flat plate shape, and a recess 26 is formed on the surface of the pad 22 at a portion corresponding to the punching seat 12. For this reason, as shown in FIG. 5 a to c, the punch 2
4 is gradually moved downward toward the pad 22, both sides of the plate 10 are sequentially bent by the pressing force of the punch 24, and the plate 10 is formed into a U-shaped plate. When the plate material 10 is bent, the plate material 10 is pressed by the punch 24 formed into a flat plate shape, so that the surface of the stamp seat 12 of the plate material 10 can be formed into a flat plate shape. Further, since the pad 22 is formed with a recess 26, it is possible to prevent the surface of the stamp seat 12 from being scratched when the plate material 10 is bent into a U-shape. Then, the plate material 10 bent into a U-shape is transported to the next stamping process, and the stamping seat 1
By stamping the vehicle body number on the surface of the board 10, the board 10 can be used as a character stamping board.

On the other hand, the plate material 14 is bent into a U-shape by the steps shown in a to c of FIG. 6, but when bending the plate material 14, the punch 24 shown in FIG. A punch 28 is used. That is, a protrusion 30 that can engage with the recess 26 of the pad 22 is formed on the tip side of the punch 28. Therefore, when the punch 28 is moved downward toward the pad 22, both ends of the plate 14 are sequentially bent, and a protrusion 32 is formed approximately at the center of the plate 14 by engagement between the protrusion 30 and the recess 26. be done. Then, the surface of the protruding portion 32 is used as the stamp seat 16, and in the next step, the vehicle body number is engraved on the surface of the stamp seat 16, and the plate material 14 is used as a character stamp board.

[Problem that the invention attempts to solve]

However, when bending the plate material 10 into a U-shape,
Embossed seat 12 using pad 22 having recess 26
Although it is possible to ensure the flatness of the plate material and prevent scratches on the surface of the stamping seat 12 during press working, since the surface of the stamping seat 12 is formed in a flat plate shape, the plate material When transporting the 10, there were problems such as abrasions and interference scratches.

On the other hand, in the case of the plate material 14, since the surface of the embossing seat 16 contacts the recess 26 of the pad 22, the recess 26
If foreign matter, dust, etc. were mixed into the stamping pad 6, a problem occurred in that the surface of the stamping seat 16 would be scratched during press working. Therefore, in the case of plate material 14, plate material 10
It was more susceptible to scratches than the mold, and the mold had to be cleaned frequently. Also, plate material 10
Similarly, since the surface of the stamping seat 16 is formed into a flat plate shape, the stamping seat 16 is
Problems such as scratches etc. occurred on the surface of the product.
Furthermore, as described in Japanese Utility Model Application Publication No. 57-52371, it is also conceivable to form a recess on the surface of the plate material 10 and use the embossing seat in the recess. but,
As shown in FIG. 7, the bent frame 67
In order to engrave a number on the frame 67, small parts are attached to the flat part of the frame 67, and only the reinforcing rib 68 can be used as an engraving seat. In such a case, as shown in FIG.
When forming the recess 69 in the mold 8, the end 71 of the mold 70
is the deepest, so the plate material 72 is at the end 7 of the mold 70.
1, the mold wears out quickly and the required flatness cannot be obtained due to the bent portion. Further, if the recess 69 is made deeper, there is a risk that the vehicle number stamping machine 73 and the reinforcing rib 68 may interfere with each other when stamping the vehicle number in the recess 69, as shown in FIG. On the other hand, if the recess 69 is made shallow, there is a risk that the surface of the recess 69 will be scratched.

The present invention has been made in view of the above-mentioned conventional problems, and its purpose is to provide a character embossing board that can prevent the surface of the embossing seat from being scratched.

[Means for Solving the Problems] In order to achieve the above object, the present invention forms protrusions around the embossing seat that forms the surface for engraving characters on the flat surface of the plate material, and Characters are engraved on the surface of the engraved seat surrounded by .

〔Example〕

Hereinafter, preferred embodiments of the present invention will be described based on the drawings.

FIG. 1 shows an embodiment suitable for use as a character stamping board for a vehicle. In FIG. 1, the character-embossed board 40 is made by bending both sides of a flat plate material 42 into a U-shape using a press machine.
An embossing seat 4 forming a surface for engraving characters among the planes of
A protrusion 46 is formed around 4, and characters such as a vehicle body number are engraved on the surface of the embossing seat 44 surrounded by the protrusion 46. This character embossing board 40 is the second
Through the steps shown in the figure, it is bent into a U-shape and a protrusion 46 is formed around the embossing seat 44.

That is, the tables 50 and 52 are placed apart from each other.
A plate material 45 is placed on top, and pads 54 and punches 55 are placed above and below the plate material 42. An annular protrusion 58 is formed on the tip side of the punch 56, and grooves 60 and 62 are carved in the pad 54.
The groove 62 is carved around the annular protrusion 64, and the width between the annular protrusions 64 is narrower than the width of the protrusion 58. and protrusion 5 of punch 56
8 is formed to be able to engage with the groove 62.

Punch 56 and pad 54 formed in this way
Insert the plate material 42 between the
When pressed sequentially, both ends of the plate 42 are sequentially bent, and an annular protrusion 46 is formed in the center of the plate 42.
are formed sequentially.

When processing the plate material 42 through the steps shown in a to c in FIG.
Since it abuts on both sides of the embossing seat 44, the flatness of the embossing seat 44 can be ensured. Furthermore, since the groove 60 is formed in the pad 54, it is possible to prevent the surface of the embossing seat 44 from being scratched during press working. Furthermore, in this embodiment, since the annular protrusion 46 is formed around the engraving seat 44, even if the plate material 42 comes into contact with another product etc. when the plate material 42 is conveyed, the engraving seat 44 It can prevent scratches and interference scratches on the surface. Therefore, when stamping the vehicle body number on the stamp seat 44 of the plate material 42 in the next step, the vehicle body number can be stamped on the surface of the stamp seat 46 that is free from scratches and the like. Further, in this embodiment, even if dirt or the like gets mixed into the groove 60 of the pad 54, it is possible to prevent scratches etc. from being formed on the surface of the embossing seat 44.
Scratches etc. can be prevented from forming on the surface of the stamping seat 44 without frequently cleaning the inside.

[Effect of idea]

As explained above, according to the present invention, protrusions are formed around the embossing seat that forms the surface for engraving characters on the flat surface of the plate material, and characters are printed on the surface of the engraving seat surrounded by the protrusions. Since it is stamped, it is possible to prevent the surface of the stamping seat of the character stamping board from being scratched during transportation, etc., and has the excellent effect of contributing to improved yield and quality. can get.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a character engraved board according to the present invention, FIG. 2 is a diagram for explaining the processing steps of the character engraved board according to the present invention, and FIG. 3 is a perspective view of a conventional character engraved board.
Fig. 4 is a perspective view of another conventional embossing board, Fig. 5 is a diagram for explaining the processing steps of the character engraving board shown in Fig. 3, and Fig. 6 is a processing of the character engraving board shown in Fig. 4. Figure 7 is a perspective view of the bent frame; Figure 8 is a diagram explaining the method of forming the reinforcing ribs shown in Figure 7; Figure 9 is the reinforcing rib shown in Figure 7. FIG. 3 is a diagram for explaining a method of stamping a vehicle body number on a vehicle. 40...Character stamping board, 42...Plate material, 44...
Engraving seat, 46...protrusion, 54...pad, 56...
...Ponchi.

Claims (1)

[Scope of utility model registration request] Characters characterized by forming protrusions around an embossing seat that forms a surface for engraving characters on the flat surface of a plate material, and engraving characters on the surface of the embossing seat surrounded by the protrusions. Engraving board.