JP2000198100A - Punch plate for flat die - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the strength of a cutting edge and prevent the impairing of the cutting quality by applying the nitriding treatment to a cutting edge of a punch plate. SOLUTION: The nitriding treatment is executed on a cutting edge 4 of a punch plate 2 for a flat die 3 manufactured by demountably mounting an acceptor 1 and a punch plate 2 by magnetic action. The nitriding and the carbonizing are simultaneously executed on a surface of the knife blade 2, and a nitriding treatment layer of a nitride layer and a carbide layer is formed on the surface of the knife blade 2. Whereby the surface of the knife blade 2, that is, the cutting edge 4 is hardened. When this nitriding treatment layer is too thin, the rigidity of the knife blade 2 is insufficient, and a matter to be cut such as a material harder than a label such as a resin plate and the like and a thick material can not be cut in a good condition (cutting quality is immediately impaired). Accordingly in a case of the knife blade 2 for flat die 3, a thickness of the nitriding treatment layer is determined to be 6 μm or more, whereby the frictional characteristic and the cutting quality can be also improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blade plate for a flat die.

[0002]

2. Description of the Related Art FIG.
Reference numeral 2 denotes an example of the flat die 3, which magnetizes the receiver 1 and the blade plate 2 by a magnetizing action, and applies a desired portion of the printed label 5 to a cutting blade 4 of the blade plate 2 in a printing apparatus. And half cut. In the drawing, reference numeral 6 denotes an installation portion 6 on which the label 5 is installed (hereinafter, referred to as a blade plate replacement type. In addition, the same reference numerals are given to the same components as those in the embodiment).

[0003] The flat die 3 selects an appropriate blade plate 2 from several types of blade plates 2 according to the type of the label 5, and selects the blade plate 2.
Can be easily formed into the flat die 3 having a cutting ability (cutting shape and cutting depth) according to the type of the label 5 and the blade plate 2 can be formed at low cost. Low cost, highly versatile flat die 3
Can be obtained. In this regard, in the case of a general flat die, that is, a flat die in which the cutting blade 4 is formed directly on a portion corresponding to the receiver 1 in FIG. 1, the receiver 1 must be replaced in order to change the cutting ability. In addition, this replacement work is troublesome and expensive.

In the conventional flat die 3 of the blade plate exchange type, the blade plate 2 needs to be made of a material that is magnetically absorbing, is inexpensive, and does not generate rust. Is made of stainless steel or special steel.

However, stainless steel or special steel has a problem that the cutting blade 3 is slightly insufficient in strength and the sharpness is reduced immediately when the label 5 is repeatedly cut or half-cut, or the material is harder and thicker than the label 5. However, there is a problem that cutting such as a resin plate is difficult.

The present invention solves the above-mentioned problems, and provides a blade plate for a flat die that has high strength and does not reduce the sharpness of a cutting blade while retaining the advantages of a flat die of a blade plate exchange type. Things.

[0007]

The gist of the present invention will be described with reference to the accompanying drawings.

A blade plate 2 for a flat die 3 in which a receiving body 1 and a blade plate 2 are detachably provided by a magnetizing action, and a cutting blade 4 of the blade plate 2 is subjected to a nitriding treatment. The present invention relates to a flat die blade plate.

The flat die blade plate according to claim 1, wherein the surface of the blade plate 2 is subjected to a nitriding treatment.

[0010] In the flat die blade plate according to any one of claims 1 and 2, the blade plate 2 is made of a stainless steel having magnetic permeability, and the nitriding treatment is performed at a temperature lower than the transformation point of the stainless steel. The present invention relates to a flat die blade plate characterized by being provided with:

In the flat die blade plate according to any one of claims 1 to 3, the thickness of the nitrided layer is 6 μm.
m, which is set to m or more.

[0012]

The present invention summarizes the effects and advantages confirmed by repeated experiments as claims.

The nitriding treatment applied to the cutting blade 4 increases the strength of the cutting blade 4, and the sharpness of the cutting blade 4 is maintained even when the object 5 such as a paper label is repeatedly cut or half-cut with the blade plate 2. Will not fall. In addition, even the object 5 to be cut such as a resin plate, which has been difficult to cut with the flat die 3 of the conventional blade plate exchange type, can be cut or half-cut satisfactorily and repeatedly.

Further, since the nitriding treatment can be easily performed on the cutting blade 4 by performing the nitriding treatment on the surface of the blade plate 2, the treatment time is shorter than the surface treatment method such as plating.
The blade plate 2 can be formed at low cost. In the conventional type in which the cutting blade is formed directly on the receiving body, the receiving body must be subjected to nitriding treatment. However, there is a problem that nitriding treatment cannot be performed on the receiver.

In order to cut or half-cut the resin plate as many times as desired on the order of tens of thousands of times, it is desirable to set the thickness of the nitrided layer to 0.6 μm or more.

Since the present invention is constructed as described above, it is practical, durable, rigid, and cost-effective, while maintaining the advantages of the flat die of the blade plate exchange type, without increasing the cutting edge of the cutting blade. It becomes a blade plate for flat die that excels cheaply.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings illustrate one embodiment of the present invention and will be described below.

In this embodiment, a blade plate 2 for a flat die 3 is provided in which a receiver 1 and a blade plate 2 are detachably provided by a magnetizing action.
The cutting blade 4 of the blade plate 2 has been subjected to a nitriding treatment.

The flat die 3 is generally incorporated in a printing apparatus or is provided alongside it.

The receiver 1 is provided with magnetism.

The blade plate 2 is made of a material having magnetic absorption such as iron (material attached to and detached from the magnet). Further, the blade plate 2 is made of a material which is hardly rusted from the viewpoint of durability, for example, SU
It is even more preferable to form it from stainless steel such as S430 or SUS420.

The cutting blade 4 is formed on one surface of the blade plate 2 by appropriate means such as pressing or cutting.

The flat die 3 is formed by attaching the blade plate 2 to the receiver 1 by magnetizing action.
The cutting blade 4 of the blade plate 2 cuts or half-cuts an object 5 such as a printed label (a sheet provided with a peelable label body on a release paper) or a resin plate. Reference numeral 6 denotes an installation section for installing the object 5 to be cut.

The blade plate 2 is appropriately selected from several types of blade plates 2 depending on the object 5 to be cut or half-cut, and is mounted on the receiver 1.

The nitriding treatment performed on the blade plate 2 will be described in detail.

The blade plate 2 on which the cutting blades 4 are formed is subjected to a nitriding treatment below the transformation point of the stainless steel. Therefore, blade plate 2
Nitriding and carburizing are performed simultaneously on the surface of the
Is formed with a nitrided layer of a nitride layer and a carbide layer. Therefore, the surface of the blade plate 2, that is, the cutting blade 4 is hardened.

If the nitriding layer is too thin, the rigidity of the blade plate 2 will be insufficient, and it will not be possible to satisfactorily cut an object made of a material harder or thicker than a label such as a resin plate (the sharpness will drop immediately. I will.) Therefore, the flat die 3
In the case of the blade plate 2 for use, the thickness of the nitriding layer must be set to 6 μm or more.

A comparison between the blade plate 2 subjected to the nitriding treatment and the conventional blade plate not subjected to the nitriding treatment shows that the thickness of the nitriding layer becomes 6 to 8 μm in about 10 minutes. Was. The surface hardness of the blade plate 2 is increased from an average of 40 to 76 by a Rockwell hardness tester (C scale), and
The surface of the blade plate 2 became smooth, the friction became strong, and the sharpness was improved. In the case of a flat die in which a cutting blade is directly provided on a general receiver 1, the surface hardness of the blade surface is about 60 by a Rockwell hardness meter.

When an experiment was conducted to cut a resin plate having a higher hardness than a paper label, the cutting edge of the cutting blade 4 began to collapse when the resin plate was cut only several tens of times in the conventional example. In the blade plate 2 subjected to the nitriding treatment, the cutting edge of the cutting blade 4 did not collapse at all even when the resin plate was cut tens of thousands of times.

Therefore, from the results of these experiments, when the blade plate 2 is subjected to the nitriding treatment, the cutting blade 4 has extremely high strength as compared with the conventional example, and has high friction (slipperiness) and good sharpness. It was confirmed that the blade plate 2 having excellent durability was obtained.

Since the present embodiment is constructed as described above, it has the advantage of being able to set the cutting capability inexpensively and easily in accordance with the workpiece 5 which is an advantage of the flat die 3 of the blade plate exchange type. The flat die blade plate is excellent in practicality and durability in that the cutting blade 4 does not lose its sharpness even if the object 5 such as a label is repeatedly cut while having it.

Further, by improving the hardness of the cutting blade 4, the blade 5 to be cut, such as a resin plate, which is a harder material than a label that cannot be cut conventionally, can be cut well and half-cut. It is a blade plate for flat die that excels in practicality.

In addition, the direct nitriding time is about 10 minutes, and the nitriding treatment can be performed in a few hours even if the preheating time is included, so that the product can be shipped with a short delivery time.
The work of transporting and moving the blade plate 2 to the nitriding apparatus can also be easily performed, and a flat die blade plate excellent in practicality and productivity capable of simultaneously nitriding a large number of blade plates 2 can be obtained.

[Brief description of the drawings]

FIG. 1 is an explanatory perspective view of a blade plate of a flat die 3. FIG.

FIG. 2 is an explanatory sectional view of an example of a flat die 3;

[Explanation of symbols]

 Reference Signs List 1 receiver 2 blade plate 3 flat die 4 cutting blade

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuhisa Sakata 1300 Inokoba Nitta, Sakaemachi, Minami Kambara-gun, Niigata Prefecture Inside Sanjo Machinery Co., Ltd. 1300 F-term in Sanjo Machine Works, Ltd. (reference) 3C060 BA01 BB07 BB18 BB20 BC22

Claims (4)

[Claims] 1. A flat die blade plate comprising a receiving body and a blade plate detachably provided by a magnetizing action, wherein a cutting blade of the blade plate is subjected to a nitriding treatment. Blade for flat die. 2. The flat die blade plate according to claim 1, wherein the surface of the blade plate is subjected to a nitriding treatment. 3. The flat die blade plate according to claim 1, wherein the blade plate is made of a stainless steel having magnetic permeability, and the nitriding treatment is performed at a temperature equal to or lower than the transformation point of the stainless steel. A blade plate for a flat die, which is provided. 4. The flat die blade according to claim 1, wherein the thickness of the nitriding layer is set to 6 μm or more.