Plastic model scribing cutter

Abstract

The utility model discloses a plastic model scribing cutter which comprises a cutter body and a cutting edge, the cutter body is fixedly connected with the cutting edge, the cutting edge is positioned at one end of the cutter body in the cutting direction, and the cutting edge is made of superhard materials. The cutting edges made of different materials are fixed in the cutting direction of the cutter body, and the cutting edges are made of super-hard materials, so that the advantages that the affinity of super-hard materials and plastic resin is low, cuttings easily flow out, and the quality of the cutting surface is good are fully played in the cutting and scribing process of a plastic (plastic cement) model; and the cutting quality and the model making and transforming efficiency of a user are greatly improved. Meanwhile, the existing mature ultra-high hardness material cutting edge is welded and fixed, so that the cutting edge, the knife body and the knife handle are separately manufactured, the knife handle and the knife body can be made of materials with lower technical requirements and lower cost, such as domestic conventional tungsten steel, and double effects of high-quality cutting and scribing and low-cost manufacturing can be realized.

Description

Technical Field

[0001] The utility model relates to the field of plastic model engraving cutters, in particular to a plastic model engraving cutter. Background Art

[0002] Plastic model engraving knives are used in the production and modification of plastic models, figurines and other plastic toys. They have fine blades and are mainly used to engrave precise, detailed and smooth lines on the models in order to create the desired groove effects. Based on the user needs for high-quality model production, model engraving knives are different from industrial engraving knives. They need to have fine engraving requirements, and also need to form smooth, burr-free and residue-free high-quality lines and grooves during and after engraving. Due to their special tool manufacturing, engraving knives are often used in the production and modification of Gundam model toys, and are welcomed by many DIY model toy enthusiasts.

[0003] However, most of the tools on the market are made of high-speed steel and tungsten steel as a whole. The blade of a high-speed steel scoring knife has excellent overall toughness but low hardness. When scoring on plastic parts, the wear is too obvious. The short service life requires repeated sharpening during use, and the efficiency of making and modifying models is very low. The integral tungsten steel scoring knife has excellent wear resistance and high hardness, and the blade can be sharpened very sharply. It is the main product in the current market. The disadvantage is that the integral tungsten steel knife has high production process technology requirements because it needs to meet the blade use requirements, and the specific formula of high-strength tungsten steel has been monopolized by foreign markets for many years. China cannot produce products that meet market demand and can only rely on imports. Therefore, the customer purchase price is extremely expensive, and tungsten steel has poor toughness. It is very easy to damage or even break the blade by impact, resulting in high cost of use. Utility Model Content

[0004] The utility model provides a plastic model scoring cutter, aiming to solve the problem that the existing plastic model scoring cutters cannot have both low cost and high performance.

[0005] According to an embodiment of the present application, a plastic model engraving tool is provided, comprising a tool head and a blade, wherein the tool head is fixedly connected to the blade, and the blade is positioned at one end in the cutting direction of the tool head, and the blade is a superhard material blade.

[0006] Preferably, the blade is away from the blade head and forms an angle of 0.9°-2.1° with the straight line direction in which the blade head extends.

[0007] Preferably, the blade is away from the blade head and forms an angle of 2° with the straight line direction in which the blade head extends.

[0008] Preferably, the cutter head is fixed to the cutting edge by welding.

[0009] Preferably, the superhard material blade includes a polycrystalline diamond blade, a cubic boron nitride blade, a combination of one or more blades selected from the group consisting of a polycrystalline cubic boron nitride blade and an artificial synthetic diamond blade.

[0010] Preferably, a knife handle is further included, wherein the knife handle is connected to the knife head and one side of the blade, and the extension direction of the knife handle is parallel to the knife head.

[0011] Preferably, an end of the knife handle close to the knife head is provided with an inclined surface portion, and the inclined surface portion is an inclined surface structure between the knife surface on both sides of the knife head and the knife handle.

[0012] Preferably, the knife handle is integrally connected to the knife head.

[0013] Preferably, one side of the blade is connected to the blade head, and an adjacent side of the blade is connected to the handle. The blade is flush with the side of the handle at one end close to the handle, and the blade is fixedly connected to the handle.

[0014] Preferably, the thickness of the cutter head is 0.2 mm.

[0015] Compared with the prior art, the plastic model engraving tool provided by the utility model has the following beneficial effects:

[0016] By fixing blades of different materials in the cutting direction of the cutter head, and the blade is a blade of super-hard material, the advantages of low affinity between super-high hardness material and plastic resin, easy flow of chips, and good cutting surface quality can be fully utilized in the cutting and marking process of plastic (plastic) models, greatly improving the cutting quality and the efficiency of users in making and modifying models. At the same time, the existing mature super-high hardness material blade is welded and fixed, so that the blade and the cutter head and the handle are made separately, and the handle and the cutter head can be made of materials with lower technical requirements and lower costs. For example, domestic conventional tungsten steel can be used to achieve the dual effects of high-quality cutting and marking and low-cost manufacturing. In particular, my country's artificial cultivation of diamond technology is becoming more and more mature, and the production cost of artificial synthetic diamond (CVD) has dropped significantly. The material price has met the requirements of commercial production, so that the scoring knife of this product has a lower production cost, and the original status of the scoring knife relying on tungsten steel blade is transformed into a diamond blade, which is conducive to breaking the foreign technology blockade. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a structural schematic diagram of a plastic model engraving tool provided by the first embodiment of the utility model.

[0019] Figure 2 This is another perspective structural schematic diagram of the plastic model engraving tool provided in the first embodiment of the utility model.

[0020] Description of the label:

[0021] 1. Blade head; 2. Blade; 3. Handle; 31. Bevel; 100. Blade face. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] It should also be understood that the terms used in this utility model specification are only for the purpose of describing specific embodiments and are not intended to limit the utility model. As used in this utility model specification and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0024] It should be further understood that the term “and / or” used in the present specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0025] Please combine Figure 1 and Figure 2 The first embodiment of the utility model discloses a plastic model engraving tool, comprising a cutter head 1, a blade 2 and a handle 3, wherein the cutter head 1 is fixedly connected to the blade 2, and the blade 2 is positioned at one end of the cutter head 1 in the cutting direction, and the blade 2 is a superhard material blade. The handle 3 is connected to the cutter head 1 and the blade 2, and the handle 3 is parallel to the extension direction of the cutter head 1.

[0026] Specifically, the blade 2 is made of different materials from the blade head 1, and the blade 2 is positioned on the blade head 1 and the handle 3 by welding. The welding method can be laser brazing, vacuum brazing, vacuum diffusion brazing, high-frequency induction brazing, etc.

[0027] It can be understood that the blade 2 and the blade head 1 can also be fixedly connected by gluing, mechanical clamping or slot fixing.

[0028] It is understandable that Figure 1 As shown in the figure, the handle 3 is connected to one side of the cutter head 1 so that a space for fixing the blade 2 is formed between the handle 3 and the cutter head 1. When the blade 2 is welded to the cutter head 1 and the side of the handle 3, the blade 2 is away from one side of the cutter head 1 and is flush with the side of the handle 3 at a position close to the handle 3.

[0029] The blade 2 is away from the blade head 1 and forms an angle a of 0.9°-2.1° with the straight line direction of the blade head 1. Specifically, the angle a can be 1°, 1.5°, 1.8° or 2°. In this embodiment, the angle a is 2°.

[0030] It is understandable that Figure 1 As shown, the extension direction of the cutter head 1 is the straight line direction connecting the handle 3 and the cutter head 1, and the tip (i.e., the end) of the blade 2 is offset toward the cutter head 1 in the straight line direction to form a deflection angle a of the blade 2.

[0031] It can be understood that the blade 2 is made of superhard material blade, specifically a combination of one or more of polycrystalline diamond (PCD) blade, cubic boron nitride (CBN) blade, polycrystalline cubic boron nitride (PCBN) blade and artificial synthetic diamond (CVD) blade. A single material such as polycrystalline diamond (PCD) blade is integrally welded and fixed at one end of the cutter head 1, so that the entire scoring tool has a better scoring effect. Or a mixed structure blade, for example, polycrystalline diamond (PCD) blade, cubic boron nitride (CBN) blade, polycrystalline cubic boron nitride (PCBN) blade can be selected and arranged in sequence to form a multi-structure blade, which also has the cutting effect of a hard blade.

[0032] It can be understood that superhard materials mainly refer to diamond and cubic boron nitride in the prior art, including polycrystalline diamond (PCD), cubic boron nitride (CBN), polycrystalline cubic boron nitride (PCBN), and artificial synthetic diamond (CVD) provided in this embodiment, and may also include polymerized diamond nanorods (ADNR), chemical vapor deposited diamond (CVDD) and other natural or synthetic superhard materials discovered in the prior art.

[0033] Please continue to combine Figure 1 and Figure 2The end of the tool handle 3 close to the tool head 1 is provided with an inclined surface 31 , and the inclined surface 31 is an inclined surface structure between the blade surface 100 on both sides of the tool head 1 and the tool handle 3 .

[0034] It can be understood that the inclined surface 31 can be used to give way and avoid air in a plastic (plastic) model, so as to facilitate the cutting operation of the tool head in a narrow space.

[0035] In this embodiment, the tool handle 3 and the tool head 1 are integrally formed, and the tool handle 3 and the tool head 1 are made of the same material, such as tungsten steel, which is integrally ground and formed, so that the tool head 1 and the tool handle 3 have better toughness.

[0036] In this embodiment, the thickness of the cutter head 1 is 0.1 mm-0.3 mm, and specifically can be 0.2 mm or 0.25 mm.

[0037] Compared with the prior art, the plastic model engraving tool provided by the utility model has the following beneficial effects:

[0038] By fixing blades of different materials in the cutting direction of the cutter head, and the blade is a blade of super-hard material, the advantages of low affinity between super-high hardness material and plastic resin, easy flow of chips, and good cutting surface quality can be fully utilized in the cutting and marking process of plastic (plastic) models, greatly improving the cutting quality and the efficiency of users in making and modifying models. At the same time, the existing mature super-high hardness material blade is welded and fixed, so that the blade and the cutter head and the handle are made separately, and the handle and the cutter head can be made of materials with lower technical requirements and lower costs. For example, domestic conventional tungsten steel can be used to achieve the dual effects of high-quality cutting and marking and low-cost manufacturing. In particular, the current artificial cultivation of diamond technology is becoming more and more mature, and the production cost of artificial synthetic diamond (CVD) has dropped significantly. The material price has met the requirements of commercial production, so that the scoring knife of this product has a lower production cost, and the original status of the scoring knife relying on tungsten steel blade is transformed into a diamond blade, which is conducive to breaking the foreign technology blockade.

[0039] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the utility model, and these modifications or replacements should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A plastic model engraving tool, characterized in that: The utility model comprises a cutter head and a cutting edge, wherein the cutter head is fixedly connected to the cutting edge, and the cutting edge is positioned at one end of the cutter head in the cutting direction, and the cutting edge is a cutting edge made of superhard material.

2. The plastic model scoring tool according to claim 1, characterized in that: The blade is away from the blade head and forms an angle of 0.9°-2.1° with the straight line direction of the blade head.

3. The plastic model scoring tool according to claim 1, characterized in that: The blade is away from the blade head and forms an angle of 2° with the straight line direction from which the blade head extends.

4. The plastic model scoring tool according to claim 1, characterized in that: The cutter head is fixed to the cutter blade by welding.

5. The plastic model scoring tool according to claim 1, characterized in that: The superhard material blade includes a polycrystalline diamond blade, a cubic boron nitride blade, a polycrystalline cubic boron nitride blade and a combination of one or more blades of artificial synthetic diamond blade.

6. The plastic model scoring tool according to claim 1, characterized in that: It also includes a knife handle, which is connected to the knife head and one side of the blade, and the knife handle is parallel to the extension direction of the knife head.

7. The plastic model scoring tool according to claim 6, characterized in that: An end of the knife handle close to the knife head is provided with an inclined surface, and the inclined surface is an inclined surface structure between the knife surface on both sides of the knife head and the knife handle.

8. The plastic model scoring tool according to claim 6, characterized in that: The knife handle is integrally connected with the knife head.

9. The plastic model scoring tool according to claim 6, characterized in that: One side of the blade is connected to the blade head, and an adjacent side of the blade is connected to the handle. The blade is flush with the side surface of the handle at one end close to the handle, and the blade is fixedly connected to the handle.

10. The plastic model scoring tool according to any one of claims 1 to 9, characterized in that: The thickness of the cutter head is 0.2 mm.

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