KR200283769Y1 - Knife for cutting machine having double blade - Google Patents

Abstract

By forming first and second blades having different angles on the knife. A knife for cutting machines having a double blade capable of forming a round on the cut surface of the PVC tile at the same time as the cutting and improving the quality of the PVC tile and the consumer's desire to purchase is disclosed. Cutting machine knife having a double blade according to the present invention has a predetermined length so as to cut the PVC tile, and extends vertically downwardly and has a predetermined angle (θ1) on both sides radially narrowly extended first The second blade portion is formed on both sides of the blade portion. The second blade has an angle θ2 less than the angle θ1 of the first blade and extends to the end of the first blade. At this time, the bent portion is formed between the first blade portion and the second blade portion by different angles θ1 and θ2. These bends round the top of the cut when cutting the PVC tile.

Description

Knife for cutting machine having double blade}

The present invention relates to a cutter knife, and more particularly, by forming first and second blade portions having different angles on the knife. The present invention relates to a cutter knife capable of forming a round on the cut surface of the PVC tile at the same time as the cutting, thereby improving the quality of the PVC tile and satisfying the consumer's purchase desire.

In general, PVC tiles are widely used as induction tiles for building flooring and blind people. These PVC tiles were limited to commercial facilities such as business offices and department stores, but in recent years, various colors and surfaces have been improved to have a soft feeling and are also used as flooring for living rooms and kitchens in homes.

However, in order to cut such a PVC tile to a certain size, it is cut by a knife mounted on a predetermined cutting machine. As shown in FIG. 2, the blade portion 20 of the knife 10 extends while being radially upward and having a predetermined angle at the blade tip. When the PVC tile 30 is cut using the knife 10, the upper surface of the cut surface of the PVC tile 30 forms a sharp jaw 40. When the PVC tile 30 having the sharp jaw 40 is constructed as described above, there is a problem that the foot of the pedestrian is damaged, and also damages thin clothing such as stockings.

The present invention has been made to solve the above conventional problems, the object of the present invention by forming a first blade and a second blade having a different angle to the knife. It is possible to form a round on the cut surface of the PVC tile at the same time as the cutting to provide a cutter knife that can improve the quality of PVC tiles and consumers' purchase needs.

1 is a view showing a knife for cutting machine having a double blade according to the present invention, and

2 is a view showing a conventional cutter knife.

Explanation of symbols on the main parts of the drawing

100: knife 110: first blade

120: second blade 130: bent portion

140: PVC Tiles

In order to achieve the object of the present invention as described above, the present invention,

Cutter knife having a predetermined length to cut a 3 ~ 4 mm PVC tile and extending vertically downwardly and having a first narrow portion extending radially narrowly at a predetermined angle θ1 on both sides To;

On both sides of the first blade portion, a second blade portion having an angle θ2 smaller than the angle θ1 and extending to the end of the first blade portion is formed, and different angles θ1 and θ2 are formed between the first blade portion and the second blade portion. Provided is a knife for a cutter having a double blade formed by the bent to form a round to the upper cutting surface when cutting the PVC tile.

As described above, according to the present invention, by forming a first blade and a second blade having a different angle to the knife. At the same time as the cutting, it is possible to form a round on the cut surface of the PVC tile, thereby improving the quality of the PVC tile and satisfying the consumer's purchase desire.

Hereinafter, with reference to the accompanying drawings will be described a knife for cutting machine having a double blade and a method of polishing thereof according to a preferred embodiment of the present invention.

1 is a view showing a knife for cutting machine having a double blade according to the present invention.

Referring to FIG. 1, the cutter knife 100 according to the present invention includes a first blade 110 and a second blade 120.

Knife 100 has a predetermined length to one side in order to cut the PVC tiles of 3 ~ 4 mm, and extends vertically downward and extends radially narrow to the lower side with a predetermined angle (θ1) on both sides 1 blade 110 is provided. The first blade 110 extends in the longitudinal direction along the knife 100. The second blade portion 120 is formed on the first blade portion 110 of the knife 100 formed as described above. Preferably, the angle θ1 of the first blade 110 has a 22 ° to 24 ° to facilitate rounding on top of the PVC tile 140 when forcibly pressing the PVC tile 140.

On the other hand, the second blade portion 120 is narrowly extended to the end of the first blade portion 110 at a predetermined position on both sides of the first blade portion 110 to the end of the first blade portion 110 in a predetermined position, It extends along the first blade portion 110 in the longitudinal direction. Preferably the angle θ2 of the second blade portion 120 has a 16 ° ~ 20 ° to minimize the gap of the cut surface of the PVC tile 140 and to facilitate the cutting.

At this time, the bent portion 130 is formed at different angles between the first blade portion 110 and the second blade portion 120. The bent portion 130 has a height smaller than the height of the PVC tile 140 to be formed at the end of the second blade 120 to forcibly form a round on the cut upper surface of the PVC tile 140 1 is formed by extending the distance (L) 2 to 3 mm into the inner side of the blade (110). The bent portion 130 formed as described above may protect the pedestrian's feet after construction by forming a smooth round 142 on the cut surface when cutting the PVC tile 140 and does not damage thin clothing such as stockings.

When the blade ends of the first blade 110 and the second blade 120 are blunt using the knife 100 formed as described above for a long time, the operator grinds the first blade 110 and the second blade 120. Reprocess using At this time, when grinding the first blade 110 and the second blade 120, the grinding wheel is rotated in the horizontal direction from one end of the first blade 110 and the second blade 120 to the other end. When the first blade 110 and the second blade 120 is processed into a grinding wheel that rotates horizontally, the surfaces of the first blade 110 and the second blade 120 are uniformly formed.

As described above, the cutter knife 100 having a double blade according to the present invention has a first angle 110 on both sides of the first blade 110 and the first blade 110 formed with a predetermined angle (θ1). A second blade portion 120 having an angle θ2 smaller than the angle θ1 and extending between the first blade portion 110 and the second blade portion 120 by different angles θ1 and θ2. By forming the bent portion 130 in the cut, it is possible to form a smooth round 142 on the upper cutting surface at the same time when cutting the PVC tile 140, damage to thin clothing such as wounds and stockings on the foot of the pedestrian There is an advantage not to give.

Although the above has been described with reference to a preferred embodiment of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the present invention described in the utility model registration claims. It will be appreciated.

Claims (3)

Cutting knife having a predetermined length so as to cut the PVC tile 140 and extending vertically downward and having a first blade 110 extending radially narrowly at a predetermined angle (θ1) on both sides In (100); On both sides of the first blade unit 110, a second blade unit 120 having an angle θ2 smaller than the angle θ1 and extending to the end of the first blade unit 110 is formed. Between the 120 and the second blade portion 120 is formed by the different angles (θ1, θ2) to form a bent portion 130 to form a round 142 on the upper cutting surface when cutting the PVC tile 140 Cutting machine knife having a double blade characterized in that formed. According to claim 1, wherein the angle (θ1) of the first blade portion 110 is 22 ° ~ to facilitate the formation of a round on top of the PVC tile 140 when forcibly pressing the PVC tile 140 It has an inclination of 24 °, the angle (θ2) of the second blade portion 120 is inclined from 16 ° to 20 ° in order to minimize the gap of the cut surface of the PVC tile 140 and to make easy cutting Knife for cutting machine, characterized by having. The second blade portion of claim 1, wherein the bent portion 130 has a height smaller than the height of the PVC tile 140 to forcibly form a round on the cut top surface of the PVC tile 140. Cutting machine knife, characterized in that formed by extending the distance (L) 2 to 3mm from the end of the 120 to the first blade portion (110) side.