A cutting tool device for preventing tobacco oil and dirt from being deposited on the knife roller system in the production of high-quality tobacco strips

Abstract

The present invention relates to the field of tobacco processing and is applicable to the production of premium tobacco, particularly high-end cigarettes. Specifically, it relates to a cutting tool device for preventing the deposition of tobacco oil and dirt on the cutter roller system during the production of premium tobacco sheets. The device is suitable for use on the cutter roller system of a cutter, and comprises a cutter blade, a wire guide strip, and a cutter roller. The wire guide strip is designed according to the geometric dimensions of the cutter roller's cutting tool, and is provided with a curved tobacco guide groove. The cutter blade is clamped and fixed to the wire guide strip, and automatically sharpened, by the original cutter roller system. Metal surface treatments such as mechanical surface treatments (e.g., sandblasting and polishing) and surface coatings or spraying treatments (e.g., silicone resin-based coatings and fluororesins) are applied to the back of the cutting edge of the cutter blade and the curved tobacco guide groove of the wire guide strip. This improves the surface's anti-stickiness, preventing tobacco oil and dirt from depositing on the cutter roller system and then dispersing into the finished tobacco, thereby improving the purity of the premium tobacco and enhancing the quality of the cigarettes.

Description

Technical Field

[0001] The present invention relates to the technical field of tobacco processing, and is applied to the shredding process of high-grade tobacco in high-end cigarettes. In particular, it relates to a cutting tool device for preventing tobacco oil and dirt from being deposited on a knife roller system in the shredding process of high-grade tobacco sheets, and is suitable for the knife roller system of a shredder. Background Art

[0002] The current national flue-cured tobacco standards classify tobacco into three grades and 42 levels. For example, premium tobacco is divided into: Medium Orange (C1F), Premium Orange (B1F), Premium Red (B1R), etc. Generally, for most tobacco leaf modules, such as those made from different tobacco grades, or in most cigarette production processes, using cutters (such as the SD5), the accumulation of tobacco oil and dirt on the cutter roller system and their periodic release into the finished tobacco is rare. However, if premium tobacco is used exclusively for production, this problem will occur frequently.

[0003] In theory, this is related to the grade of tobacco leaves used in silk making and the grade of cigarettes produced, because high-quality tobacco has a golden color, a sweet and mellow fragrance, a soft texture, a suitable water content, and good toughness. Simply put, high-quality tobacco oil has the highest smoothness and is the preferred raw material for high-end and ultra-high-end cigarettes. It is also a more difficult process in the silk making process.

[0004] When tobacco oil deposits accumulate on the cutter roller system and reach a certain size, they are dispersed onto the tobacco conveyor line and subsequently fed into cigarette production. These deposits typically range in size from 3 to 80 mm square, appearing in lumps or strips, and are relatively hard. They are primarily composed of condensed matter such as tobacco oil, ash, and tobacco dust. The presence of this type of contamination in cigarettes, especially premium and ultra-premium cigarettes, significantly compromises quality and is clearly unacceptable. Therefore, currently, dedicated personnel are required to inspect and promptly remove this type of contamination from the tobacco conveyor line in the production of premium cigarettes. This is labor-intensive, labor-intensive, and inefficient.

[0005] In view of the above problems, the inventors of the present invention finally obtained the present invention after a long period of research and practice. Summary of the Invention

[0006] The present invention provides a cutting tool device, which solves the problem of tobacco oil and dirt being scattered into finished tobacco during the production of high-quality tobacco shreds, improves the purity of the high-quality tobacco shreds, and enhances the rolling process of the cigarette-making machine and the quality of the cigarettes.

[0007] The technical solution adopted in the present invention is:

[0008] Provided is a cutting tool device for preventing tobacco oil and dirt from being deposited on the cutter roller system in the production of high-quality tobacco slices. The cutting tool device is installed on the cutter roller system of a cutter, comprising: a cutter blade 1, a wire guide support strip 2, and a cutter roller 3; the cutter blade 1 is installed on the wire guide support strip 2, and the wire guide support strip 2 is installed on the cutter roller 3;

[0009] The wire guide blade 2 is provided with a tobacco guide groove curved surface 4. The wire guide blade 2 is provided with a tobacco guide groove curved surface 4. The tobacco guide groove curved surface 4 includes a micro-plane, a first arc surface, a second arc surface and a third arc surface that are smoothly connected in sequence.

[0010] In some embodiments, the wire guide strip 2 has two opposite side planes, namely, side B and side C; side B and side C extend along the length direction of the wire guide strip 2, and the tobacco guide groove curved surface 4 is located between side B and side C. The side C of the wire guide strip 2 is fixedly attached to the back of the cutting edge of the cutting blade 1, and the angle between side C and side B is the cutting angle β of the cutting blade 1 in cutting tobacco, β = 2°.

[0011] In some embodiments, the tobacco guide groove curved surface 4 includes a microplane, a first arc surface, a second arc surface, and a third arc surface that are smoothly connected in sequence. The angle at which the microplane intersects with the plane of the C surface is 28°, the radius of the first arc surface is 15 mm, the radius of the second arc surface is 10 mm, and the radius of the third arc surface is 2 mm.

[0012] In some embodiments, the minimum distance between the bottom edge of the cutting edge of the slicing blade 1 and the wire guide support strip 2 is S, and S is 4 to 6 mm.

[0013] In some embodiments, a mounting countersunk hole 5 is provided in the curved surface 4 of the tobacco guide groove for mounting the wire guide blade 2 on the blade roller 3 .

[0014] In some embodiments, the material of the wire guide blade 2 is cold-working die steel, and the material of the wire cutting blade 1 is high-speed steel.

[0015] In some embodiments, the back of the cutting edge of the cutting blade 1 and the curved surface 4 of the tobacco guide groove of the wire guide blade 2 are subjected to metal surface treatment to improve the anti-stickiness of the surface; the metal surface treatment is selected from one of the following treatment methods:

[0016] 1 Mechanical surface treatment: including sandblasting and polishing;

[0017] 2. Surface coating treatment: including spraying;

[0018] 3. Chemical surface treatment: including oxidation and chemical plating;

[0019] 4. Electrochemical surface treatment: including electroplating and anodizing;

[0020] 5 Modern surface treatment: including chemical vapor deposition (CVD), physical vapor deposition (PVD), and laser surface treatment.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] The present invention provides a cutting tool device. First, a special tobacco guide groove surface is designed in the wire guide blade, which is composed of three arc surfaces and micro-planes smoothly connected. The angle between the micro-plane and the contact plane of the wire guide blade is 28°, which improves the anti-adhesion performance, and the tobacco cut by the cutting blade can fall smoothly in the guide groove surface. Furthermore, since the tobacco guide groove surfaces of the cutting blade and the wire guide blade are both treated with metal surface treatment, the tobacco oil and soot produced during the tobacco cutting process are not easy to adhere to the cutting blade and the wire guide blade. Therefore, the deposition of tobacco oil, soot, and broken tobacco on the cutter roller system of the cutter as tobacco oil dirt falling onto the production line is avoided as much as possible. The present invention only improves the cutting blade of the cutter on the wire guide blade, and does not change its cutter roller and feed mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0024] Figure 1 A schematic structural diagram of a cutting tool device according to an embodiment of the present invention is shown;

[0025] Figure 2 A schematic diagram showing the geometric positions of the wire cutting blade and the wire guide support strip according to an embodiment of the present invention is shown;

[0026] Figure 3 A schematic structural diagram of a shredding blade according to an embodiment of the present invention is shown;

[0027] Figure 4 A schematic structural diagram of a wire guide blade according to an embodiment of the present invention is shown;

[0028] Figure 5 Shown Figure 4 Schematic diagram of the design of the tobacco guide surface in the P direction (A surface);

[0029] Figure 6 A schematic diagram showing the cutting principle of the cutting tool device according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0030] The above and other technical features and advantages of the present invention are described in more detail below with reference to the accompanying drawings.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the present invention.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, unless otherwise specifically defined.

[0033] In the present invention, unless otherwise specified or limited, the terms "mounted," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; they may refer to direct connection or indirect connection through an intermediate medium; they may refer to internal communication between two components or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0034] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0035] The objective reason for the accumulation of tobacco oil and dirt on the cutter roller system of a tobacco cutter is the high grade and high tobacco oil content of the tobacco flakes. After extensive research, the inventors discovered that the cutting blades used in the cutter roller system of current tobacco cutters are typically made of high-grade steel without metal surface treatment. To ensure their sharpness, they are automatically sharpened regularly on the cutter. Due to this automatic grinding process, burrs on the cutting edge of the blades easily attract tobacco oil to the cutting edge, where it gradually accumulates and spreads into the inner groove of the guide bar, forming tobacco oil and dirt. Since these cutting blades and guide bar support strips are generally untreated, they have a strong affinity for tobacco oil and dirt, causing them to adhere to it. Furthermore, the guide bar support strip lacks a smooth curved surface design, which allows tobacco oil, soot, and dust to be removed in a timely manner, resulting in tobacco oil and dirt being deposited and then falling off, repeating the cycle. Even if appropriate heating methods are used on the cutter roller system to reduce the tobacco oil's affinity or adhesion, it has no significant effect. Therefore, this is a common problem in tobacco cutting. Therefore, to solve the problem of tobacco oil and dirt being scattered into the finished tobacco during the production of high-quality tobacco slices, the key technology is the surface treatment of the cutting blade and the design of the wire guiding principle of the wire guide support strip.

[0036] like Figure 1 、 Figure 2 As shown, in this embodiment, a cutting tool device is provided for preventing tobacco oil and dirt from being deposited on the cutter roller system during the production of high-quality tobacco slices. The device is installed on the cutter roller system of the cutter and includes a cutter blade 1, a wire guide strip 2, and a cutter roller 3. The cutter blade 1 is installed on the wire guide strip 2, which is installed on the cutter roller 3. The wire guide strip 2 is designed according to the installation position and geometric dimensions of the cutter blade 1 on the cutter roller 3 of the cutter. A tobacco guide groove curved surface 4 is designed inside the wire guide strip 2 to guide the cut tobacco. The number of wire guide strips 2 is determined by the cutter roller system of the cutter. A cutter blade 1 is placed on each wire guide strip 2. The clamping, fixation, and automatic grinding of the installed cutter blade 1 on the wire guide strip 2 are completed by the original cutter roller system. A countersunk hole 5 is designed on the wire guide strip 2 to match the cutter roller system of the cutter so that the wire guide strip 2 can be installed on the cutter roller 3. The back of the cutting edge of the cutting blade 1 and the curved surface 4 of the tobacco guide groove of the wire guide blade 2 are subjected to metal surface treatment to improve the anti-stickiness of the surface.

[0037] Metal surface treatment processes can be used, such as: 1) mechanical surface treatment, such as sandblasting and polishing; 2) chemical surface treatment, such as oxidation and electroless plating; 3) electrochemical surface treatment, such as electroplating and anodizing; 4) coating treatment, such as lacquer and spraying; 5) modern surface treatment, such as chemical vapor deposition (CVD), physical vapor deposition (PVD), and laser surface treatment. Using any of the above anti-stick surface treatments should, in theory, be effective in preventing the accumulation of oil and dirt on the blade roller system.

[0038] In one specific embodiment, an SQ cutter roller system was selected, with eight sets of cutter blades 1 and wire guide strips 2 installed and designed. The back of the cutting edge of the cutter blades 1 and the curved surface 4 of the tobacco guide groove of the wire guide strips 2 were treated with one of the following methods: 1. Mechanical surface treatment, such as sandblasting or polishing. 2. Surface coating, such as spraying with silicone resin-based coatings or fluororesins, to improve surface anti-stick properties. Both methods are effective in improving surface anti-stick properties.

[0039] like Figures 3-5 As shown, the wire guide strip 2 has two opposite side planes, namely surface B and surface C. Surface B and surface C extend along the length direction of the wire guide strip 2, and the tobacco guide groove curved surface 4 is located between surface B and surface C. The back of the cutting edge of the cutting blade 1 is set on surface C of the wire guide strip 2. When surface B of the wire guide strip 2 is used as a reference, the angle between surface C and surface B is 2°, which is the cutting angle β=2° of the cutting blade 1 in cutting tobacco. The tobacco guide groove curved surface 4 (i.e., surface D) consists of three sections of arc surfaces with radii of R15, R10, and R2 mm respectively, and micro-planes smoothly connected, wherein the micro-plane intersects with the plane of surface C at an acute angle of 28°, and the R15 arc surface smoothly connects the micro-plane and the R10 arc surface respectively.

[0040] In this embodiment, the geometric dimensions of the wire guide blade 2 for the cutter were tested, the wire guide blade 2 was designed, and the mounting countersunk hole 5 was fabricated in conjunction with the components on which the wire guide blade 2 is mounted. During machining, the angle between surface C and surface B was 2°, representing the cutting angle β = 2° of the cutter blade 1 when cutting tobacco shreds, and representing the tool placement angle.

[0041] Reference Figure 5 The curved surface 4 of the tobacco guide groove consists of three arcs with radii of R15, R10, and R2 mm, respectively, connected by a smoothly connected microfacet. The center coordinate of R15 is O1, the center coordinate of R10 is O2, and R2 is a standard arc. The microfacet intersects the plane of the C surface at an acute angle of 28°. A sharp angle with a height h of 1 mm is used to prevent oil and dirt from sticking. The design of the tobacco guide groove surface 4 ensures the timely removal of oil, ash, and dust, ensuring that tobacco flows smoothly during the cutting process and falls into the finished tobacco with the circular motion of the blade roller 3.

[0042] like Figure 2 、 Figure 6 As shown, since the position and matching hole of the wire guide strip 2 for installing the SQ wire cutter are fixed, a mounting countersunk hole 5 is opened in the curved surface 4 (D surface) of the tobacco guide groove, and the wire guide strip 2 is installed on the knife roller 3. The back of the cutting edge of the wire cutting blade 1 is placed on the C surface of the wire guide strip 2. The minimum distance between the cutting edge and the wire guide strip 2 is S, and S is 4 to 6 mm.

[0043] In a preferred embodiment, the wire guide blade 2 is made of cold-working die steel, such as Cr12Mo1V1, and the wire cutting blade 1 is made of high-speed steel, such as W6Mo5Cr4V2.

[0044] The above are only preferred embodiments of the present invention and are illustrative rather than restrictive. The structures and connection methods of the various components in the present invention are subject to change. Any equivalent transformations and improvements based on the technical solution of the present invention should not be excluded from the scope of protection of the present invention.

Claims

1. A cutting tool device for preventing tobacco oil and dirt from being deposited on the cutter roller system in the production of high-quality tobacco slices, installed on the cutter roller system of the cutter, characterized in that: include: A wire cutting blade (1), a wire guide blade support strip (2) and a knife roller (3); the wire cutting blade (1) is mounted on the wire guide blade support strip (2), and the wire guide blade support strip (2) is mounted on the knife roller (3); The tobacco guide groove curved surface (4) is provided on the guide wire support blade (2), and the tobacco guide groove curved surface (4) comprises a micro-plane, a first arc surface, a second arc surface and a third arc surface which are smoothly connected in sequence; The wire guide blade (2) has two opposite side planes, namely, surface B and surface C; surface B and surface C extend along the length direction of the wire guide blade (2); the tobacco guide groove curved surface (4) is located between surface B and surface C; the surface C of the wire guide blade (2) is fixedly attached to the back of the cutting edge of the cutting blade (1); the angle between surface C and surface B is the cutting angle β of the cutting blade (1) in cutting tobacco, β=2°; The angle between the microplane and the plane of the C surface is 28 degrees, the radius of the first arc surface is 15 mm, the radius of the second arc surface is 10 mm, and the radius of the third arc surface is 2 mm; The minimum distance between the bottom edge of the cutting edge of the slicing blade (1) and the wire guide blade (2) is S, and S is 4-6 mm.

2. The cutting tool device according to claim 1, wherein: A mounting countersunk hole (5) is provided in the curved surface (4) of the tobacco guide groove for mounting the guide wire support blade (2) on the blade roller (3).

3. The cutting tool device according to claim 1, wherein: The material of the wire guide blade (2) is cold-working die steel, and the material of the wire cutting blade (1) is high-speed steel.

4. The cutting tool device according to any one of claims 1 to 3, wherein: The back of the cutting edge of the cutting blade (1) and the curved surface (4) of the tobacco guide groove of the guide blade (2) are subjected to metal surface treatment to improve the anti-stickiness of the surface.

Images