JP3132970U - Punching mold - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a punching die which is a material that can be recycled after use and can be manufactured at a low cost so as to be profitable even if it is not stored.
A synthetic board in which wood powder is hardened with a resin is used instead of a laminated plywood, and a through groove having a width of about 0.7 mm is fitted with a laser beam in accordance with a pattern stored in a computer. The thickness of the synthetic plate is 15 mm, the thickness of the blade is 0.7 mm, the width is 20 mm, and the blade protrudes 5 mm from the board surface. Backing is performed with a 3 mm thick backing plate, and the total thickness is 18 mm.
[Selection] Figure 1

Description

  The present invention relates to a punching die for punching paper or cloth with a press.

  Conventionally, in order to make various punched products, punching dies that are mounted on a press and punched are used. Usually, the punching die is made by fitting an iron punching blade in the form of a punching product into a wooden laminated plywood having a thickness of 18 mm.

  The blade is 0.7 mm thick, and the width is 23 mm, which is 5 mm larger than the thickness 18 mm of the plywood. The plywood is pierced with a through-groove that just fits the blade. If the groove into which the blade is fitted goes around continuously, the part surrounded by the blade may fall off, so that the through groove is interrupted in some places so that it does not fall off, The inside and outside are connected.

  The size of the plywood is between 35 cm x 45 cm and 120 cm x 180 cm. Different punching dies are made for each product, and the product is punched according to the text. Since punching dies are expensive, each die is usually stored until it becomes unusable and reused.

  Laminated plywood goes crazy with changes over time depending on humidity and temperature. For punching that requires an accuracy of 1/10 mm, the deviation causes a cutting failure or damages the blade. As a result, there is a problem that the fine paper scraps called “white hair” in industry terms are mixed into the product.

  The punching die is quite expensive compared to the unit price of the product, so a total of 300,000 to 500,000 shots are used with occasional repairs. You don't hit that much all at once, so you have to store the mold for the next time, and you have a huge number of molds. Therefore, securing the storage location and inventory management will be a great effort. Molds that have become obsolete or become unusable will be disposed of. The plywood part, the blade, and the sponge on the periphery of the blade were separated and processed, but the plywood part had to be incinerated.

  A stamping die that can be manufactured at a low cost so as to be profitable even if it is a material that can be recycled after use and is not stored after use.

  The present invention has been made in view of the above problems, and instead of a laminated plywood, a synthetic board in which wood powder is hardened with a resin is used, and a blade is fitted with a laser beam according to a pattern stored in a computer, about 0.7 mm in width. Dig a through groove. The board thickness is 15 mm, the blade thickness is 0.7 mm, and the width is 20 mm so that the blade protrudes 5 mm from the board surface.

  When the punching die is set in the press machine, it is backed with a 3 mm thick backing plate and used so that the total thickness is 18 mm.

    As described above, if the punching die of the present invention is used, the synthetic board can be recycled, and the price of the synthetic board is a fraction of the price of wooden laminated plywood. After the shot is punched, it can be profitable even if it is discarded, and it is not necessary to store the punching die for a long time. When the mold is needed again, the punching mold can be easily created again based on the information stored in the computer.

  A through-groove for fitting a blade for punching with a laser beam is dug into a synthetic plate having a thickness of 15 mm and having an area between 35 cm × 45 cm and 120 cm × 180 cm in accordance with a punching pattern stored in a computer. A steel blade with a thickness of 0.7 mm and a width of 20 mm is fitted and used with a backing plate with a thickness of 3 mm.

  An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a partial perspective view of a punching die. A through groove 2 of about 7 mm is dug and a blade 3 having a thickness of 0.7 mm and a width of 20 mm is fitted. The blade comes out of the 5mm composite plate. On both sides of the blade, a pressing sponge 4 necessary for punching work is attached. In addition, a 3 mm thick metal plate 5 for lining is used on the back of the punching die.

  As described above, if the punching die of the present invention is used, all the members can be recycled. Therefore, a die can be easily made at a necessary time, and can be separated and recycled when it becomes unnecessary. Since the material is inexpensive, the price of the mold itself can be reduced, and the labor for storage and management of the mold can be saved, so that the manufacturing cost as a whole can be significantly reduced. Moreover, since the backing plate is applied, the blade back does not directly hit the press board as before, and the life of the press machine can be extended.

The partial perspective view of a punching die.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Composite board 2 Groove to which a blade is fitted 3 Blade 4 Sponge of pressing 5 Metal plate for backing

Claims (2)

  A through-groove with a width of about 0.7 mm to fit the blade with a laser beam according to the punching pattern stored in the computer on a synthetic board of 15 mm thickness with wood powder hardened with resin between 35 cm x 45 cm and 120 cm x 180 cm The entire punching die made by fitting an iron punching blade with a thickness of 0.7 mm and a width of 20 to 23 mm into the groove was lined with a backing plate with a thickness of 3 mm from the back, and the blade was fitted. A punching die which is used so that the total thickness of the synthetic plate and the backing plate is 18 mm.   2. The punching die according to claim 1, wherein the whole is made of a recyclable material.

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