JP2000271666A - Trimming press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trimming press capable of easily and inexpensively manufacturing a supporting means for a formed part. SOLUTION: A trimming press consisting of an upper die 7 and a lower die 8 having cutting blades 3, 4 for removing by shearing the unnecessary part 2 of a formed part 1 made of a plate stock is composed in such a manner that an abutting plate 10 for pressurizing and holding the peripheral part of the cutting line of the formed part between the base 6 of the other side of cutting blade 4 and the abutting plate is provided in the position adjacent to either one side of cutting blade 3 of the upper die or lower die via an elastic member 9 deformable by compressing by a thickness corresponding to a cutting stroke. Thus, the periphery of the cutting line is pressurized by the abutting plate via the elastic member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trimming press comprising an upper die and a lower die having a cutting blade for shearing off unnecessary portions of a molded product made of a plate material.

[0002]

2. Description of the Related Art For example, a molded product press-formed from a steel plate such as a fuel tank is sheared by a trimming press comprising an upper die and a lower die each having a cutting edge, so that unnecessary portions are removed. You. At this time, since a large force is instantaneously applied to the cut portion, it is necessary to strongly press the periphery of the cut line in order to prevent the product portion from being deformed.

Conventionally, as shown in FIG. 2, for example, a coil spring 23 is provided so that a support-only mold called a pad mold 22 corresponding to the shape of a molded product 21 can be displaced up and down by an amount corresponding to a cutting stroke. , And a structure supported inside the upper mold 24 is adopted. As a result, the molded product 21 is supported by the pad mold 22 and the upper mold 24 is pressed while pressing the peripheral portion of the cutting line against the base 26 of the cutting blade of the lower mold 25.
Was quickly dropped, and unnecessary portions were instantly cut off at each cutting edge of the upper mold 24 and the lower mold 25.

[0004]

However, according to this conventional method, it is necessary to prepare a pad type which requires a great deal of time and a large amount of cost for its production in accordance with the type of the molded product. In the case of low-mix / high-volume production, there is a problem that the cost required for the pad type is not commensurate with the number of units to be canceled.

[0005] The present invention has been devised to solve such problems of the prior art, and its main objects are as follows.
An object of the present invention is to provide a trimming press capable of easily and inexpensively manufacturing a support for a molded product.

[0006]

According to the present invention, an upper die 7 having cutting blades 3 and 4 for shearing off unnecessary portions 2 of a molded product 1 made of a plate material is provided in the present invention.
The configuration of the trimming press composed of the lower die 8 and the lower die 8 is arranged such that a cutting line is formed between the cutting edge 3 of one of the upper die and the lower die and the base 6 of the other cutting edge 4. Abutting plate 10 for pressing and holding the peripheral portion of the device is provided via an elastic member 9 which can be compressed and deformed by an amount corresponding to the cutting stroke.

[0007] According to this, the periphery of the cutting line can be pressed by the contact plate via the elastic member.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a trimming press constructed according to the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, in this trimming press, steel bases 5.6 provided with cutting blades 3.4 for shearing off unnecessary portions 2 of a molded product 1 made of a plate material are fixed. Consisting of an upper mold 7 and a lower mold 8, the lower mold 8 is fixed,
The upper die 7 can be moved up and down.

At a position adjacent to one of the cutting blades 3 attached to the upper die 7, a contact plate 10 is provided via an elastic member 9 made of urethane foam. The abutment plate 10 is for holding the peripheral portion of the cutting line of the molded product between the base 6 of the other cutting blade 4 attached to the lower die 8 at the time of cutting, and A function is provided to hold the cut portion of the molded product 1 by applying a pressing force by compressive deformation of the elastic member 9 corresponding to the cutting stroke.

The elastic member 9 is formed by screwing a tip of a retaining bolt 12 inserted from above the base 5 of the upper cutting edge 3 into a nut 11 previously welded to the contact plate 10, and
0 and the abutment plate 1 with the base 5 of the upper cutting edge 3 suspended.
It can be formed by pouring molten urethane into a gap between 0 and 0. In other words, according to the structure of the present invention, it is not necessary to form the elastic member 9 in a separate step, so that there is no need for mold design or machining as in the conventional pad mold, and a very simple structure can be used to press the cut portion. A pad function for applying pressure can be obtained.

[0012]

As described above, according to the present invention, the periphery of the cutting line can be pressed without using a pad mold corresponding to the shape of a molded product, so that a trimming press can be manufactured easily and inexpensively. Can be.

[Brief description of the drawings]

FIG. 1 is a conceptual vertical sectional view of a trimming press according to the present invention.

FIG. 2 is a conceptual vertical sectional view of a conventional trimming press.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Molded product 2 3.4 Cutting blade 5.6 Base 7 Upper die 8 Lower die 9 Elastic member 10 Contact plate

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kenzo Hayama 393-2 Sasakubo Kashihara, Sayama-shi, Saitama F-term in Yachiyo Industry Co., Ltd. (reference) 3C039 DA08 4E048 AA02 4E088 DA08 EA05 EA10 GA07

Claims (1)

[Claims] 1. A trimming press comprising an upper mold and a lower mold having a cutting blade for shearing off unnecessary portions of a molded product made of a plate material, wherein the trimming press comprises one of the upper mold and the lower mold. At a position adjacent to the blade, an abutting plate for pressing and holding a peripheral portion of the cutting line of the molded product between the base of the other cutting blade and an elastic member capable of compressively deforming by an amount corresponding to the cutting stroke. A trimming press characterized by being provided through.