KR200347159Y1 - zigzag type rule die steel - Google Patents

Abstract

The present invention relates to a zigzag cutting knife, the body portion 10 is formed with a constant thickness and a flat front and back surface; At the bottom of the body portion 10, the cross section is gradually narrowed to form a sharp blade, and the end portion 20a is cut and extended to form a zigzag and extended along the longitudinal direction of the body portion 10; In the technical gist of the present invention, it is possible to cut the leather material and the like into a continuous zigzag shape by pressing from the upper side. The present invention relates to a zigzag cutting knife that can improve the product productivity of bags, shoes, etc. and at the same time, finely and neatly cut and shape the ends of decorations, thereby improving the product quality.

Description

Zigzag type cutting knife {zigzag type rule die steel}

The present invention relates to a zigzag cutting knife, and more particularly, to a cutting knife for manufacturing a mold capable of cutting raw materials such as leather into a zigzag or wavy pattern used for decoration of footwear or bags. will be.

In making shoes or clothes, which are leather products, it is necessary to precisely cut the leather into an appropriate size and shape, and for this, a cutting knife having a shape as shown in FIG. 1 is used. These cutting knives are bent in various shapes and bonded to the end to cut a material such as leather to produce a mold having a certain shape.

Such a conventional cutting knife is limited to the form of a pointed blade is formed on the plate-like member and this blade forms a smooth straight blade, but in recent years due to the high-quality products of the product as the importance of design functions rather than practical functions In order to use the complex and delicate design and decoration of the need for a cutting knife that can be easily cut in large quantities to have a fine bent end of the leather and the like has been requested.

The present invention devised to solve the above problems is to provide a zigzag cutting knife that can be easily cut into a variety of end shapes, such as leather with a zigzag or wavy blade.

1-a perspective view of a cutting knife according to the prior art.

Figure 2-a perspective view showing one embodiment of a cutting knife according to the present invention.

Figure 3-a perspective view showing two embodiments of a cutting knife according to the present invention.

Figure 4-a perspective view showing three embodiments of a cutting knife according to the present invention.

5-a perspective view showing the use of one embodiment of a cutting knife according to the present invention.

Figure 6-Exemplary view showing the cutting edge and the cutting shape of 1, 2, 3 embodiments of the cutting knife according to the present invention.

<Description of Major Symbols Used in Drawings>

10: body portion 20: cutting blade portion

20a: cutting edge end

The present invention for achieving the above object, the body portion 10 is formed with a predetermined thickness and a flat front and back surface; At the bottom of the body portion 10, the cross section is gradually narrowed to form a sharp blade, and the end portion 20a is cut and extended to form a zigzag and extended along the longitudinal direction of the body portion 10; The technical gist of the zigzag cutting knife which is comprised so that it may cut | disconnect the lower leather material etc. in continuous zigzag shape by the pressurization from the upper side is made into a technical summary.

Here, the cutting blade portion 20, it is preferable to include an embodiment symmetrically formed on both upper and lower ends of the body portion 10 made of both blades.

In addition, the cutting blade portion 20, it is preferable to include an embodiment in which the end portion (20a) is bent into a continuous wave shape formed at regular intervals to cut the leather or the like in a continuous wave shape.

Accordingly, there is an advantage that the zigzag or wavy blades can be easily cut into various end shapes having fine curved ends.

In addition, there is another advantage that can improve the product productivity, such as bags, shoes, etc., and at the same time can improve the product by finely and neatly cut end of the decoration.

The main point of the present invention is in the shape of the cutting blade 20 is bent finely repeated repeatedly unlike the existing smooth straight line with reference to the following three embodiments and the following drawings of the present invention having the configuration as described above It will be described in detail. Figures 2, 3 and 4 are perspective views showing one, two and three embodiments of the cutting knife according to the present invention, respectively, Figure 5 is a perspective view showing the use of one embodiment of the cutting knife according to the present invention, Figure (A) of FIG. 6 shows the cutting edge and the cutting shape of Example 1 and 2, (b) is the illustrative figure which showed the cutting edge and the cutting shape of 3 Example.

The present invention is made of a body portion 10 and the cutting blade portion 20, the body portion 10 is a conventional cutting knife that forms a front and rear surface with a predetermined thickness and extending in the lateral direction to form a band. It has the same structure as, the cutting blade portion 20 has a structure in which the end of the knife is bent repeatedly in front and rear to form a zigzag shape.

First, an embodiment of a cutting knife according to the present invention will be described.

As shown in FIG. 2, the first embodiment is formed to be zigzag-shaped by bending forward and backward on the basis of the center of thickness of the linear body portion 10 and the linear body portion 10 having a predetermined thickness. It consists of the blade part 20.

Since the body portion 10 has the same structure as the conventional one, a detailed description thereof will be omitted.

The cutting blade portion 20 is formed to gradually narrow the cross section from the lower end of the body portion 10 to the end portion 20a so as to form a sharp blade for cutting the leather and the like placed on the lower side, the cutting blade portion ( The end portion 20a of the cutting blade portion is repeatedly bent back and forth alternately so that the blade edge of 20) forms a zigzag shape as shown in FIG.

The cutting blade portion 20 is manufactured to form a smooth bent surface from the body portion 10 of a straight line having a certain thickness to the thin end portion 20a bent to a very thin thickness to concentrate fatigue by repeated impact and compression Minimize the sharp bends you receive.

The cutting knife according to the present invention is bent into a specified shape and made into a mold, and as shown in FIG. 5, the cutting knife is repeatedly formed in a plurality of cutting materials having the same shape as it is repeatedly moved and pressed by an adjacent spare of the raw material. When cutting is repeated while the thickness of the raw material to be cut at a time is thick or the cutting material cut into a predetermined shape is inserted inside the mold, the upper part of the raw material thickness and the cutting material are along the smooth bending surface in the mold. It is flexibly moved upward to maintain the same cutting performance as the straight blade.

Next, two embodiments of the cutting knife according to the present invention will be described.

As illustrated in FIG. 3, the cutting blade 20 has a double blade structure symmetrically formed at both upper and lower ends of the body 10.

The second embodiment has the same structure as the cutting blade portion 20 is formed on the upper and lower ends of the body portion 10, the cutting blade portion 20 is further provided on the top of the structure as in the first embodiment. The cutting blade portion 20 formed at the upper end is repeatedly symmetrically formed with the cutting blade portion 20 formed at the bottom by repeating and continuously bending back and forth in the same orthogonal position as the cutting blade portion 20 formed at the lower end of the body portion 10. do.

This double-edged structure is particularly suitable for cutting pairs of shoes or gloves, and it is possible to improve workability and cut products with more accurate dimensions during cutting, instead of separately manufacturing two molds to pair left and right. Cost reduction can be realized by maximizing the utilization of materials.

Next, three embodiments of a cutting knife according to the present invention will be described.

The third embodiment has a structure in which a cutting blade portion 20 having a wavy end portion 20a in which a '∩' is continuously formed is formed on a lower end of the main body portion 10 having the same shape as the first and second embodiments. .

Shoes, bags, gloves, etc. In addition to the zigzag shapes shown in the first and second embodiments, various end shapes including wavy patterns are applied to create a variety of aesthetics, cutting blade portion of the cutting knife according to the present invention ( 20) It is not preferable to limit the shape only to the zigzag shape.

According to the third embodiment, as the cutting blade portion 20 is formed in a wave shape such that a semicircle or an elliptical arc is continuously formed along the body portion 10 in the longitudinal direction, a zigzag shape in which '∧, ∨' characters are continuously formed is formed. In addition to including an embodiment having a cutting blade portion 20 to create a wavy cutting shape having a soft aesthetic, and also including a variety of cutting blade shapes that can create a variety of aesthetics within a simple bending range It is intended to be granted.

As shown in FIG. 4, the third embodiment protrudes smoothly as a part of a sphere from the front of the body part 10 having a certain thickness and the center of the thickness of the body part 10 of the straight shape. And the adjacent portion positioned rearward as the spherical shape is continuously formed to the left and right sides is composed of a cutting blade portion 20 having a wavy end portion 20a shape which forms a sharp pointed projection to the rear.

The cutting blade 20 is also manufactured to form a smooth bent surface from the body portion 10 of the straight shape having a certain thickness, but different from the first and second embodiments, to a thin end 20a bent to a very thin thickness. In addition, it minimizes the sharp bending part that can be intensively fatigued by repeated impact and compression, and allows the upper part of the thickness of the raw material and the cutting material to be flexibly moved upward along the smooth bent surface in the mold during cutting.

The present invention by the above configuration has the effect of being able to easily cut the leather material and the like into various end shapes having fine curved ends by providing a zigzag or wavy blade.

In addition, there is another effect that can improve the product productivity of bags, shoes, etc., and at the same time can improve the product by finely and neatly cut end of the decoration and the like.

Claims (3)

A body portion 10 extending to a predetermined thickness and forming a flat front and rear surface; At the bottom of the body portion 10, the cross section is gradually narrowed to form a sharp blade, and the end portion 20a is cut and extended to form a zigzag and extended along the longitudinal direction of the body portion 10; A zigzag cutting knife, characterized in that for cutting the lower leather material and the like into a continuous zigzag shape by pressurization from the upper side. According to claim 1, The cutting blade portion 20, Zigzag-type cutting knife, characterized in that the upper and lower ends of the body portion 10 is formed symmetrically produced with both blades. According to claim 1, The cutting blade portion 20, Zig-zag cutting knife, characterized in that the end (20a) is bent into a continuous wave shape formed at regular intervals to cut the leather material in a continuous wave shape.