Tobacco shred shearing device

Abstract

The utility model belongs to the field of tobacco cutting, and particularly provides a cut tobacco shearing device. The cut tobacco shearing device comprises a rack, a movable cutter support and a fixed cutter support are arranged on the rack, a rotatable movable cutter is installed on the movable cutter support, a fixed cutter forming a set included angle with the horizontal plane is installed on the fixed cutter support, and at least one of the fixed cutter support and the movable cutter support is movably installed on the rack in the radial direction of the movable cutter. And the movable cutter and the fixed cutter can be close to and far away from each other. The distance between the movable cutter and the fixed cutter of the tobacco shred shearing device is variable, so that tobacco shreds with different lengths can be cut. When the cut tobacco cutting device is used for conventional cigarette production, the movable cutter and the fixed cutter can be adjusted to be far away, the distance between the movable cutter and the fixed cutter is increased, and therefore long cut tobacco can be cut out. When the cut tobacco cutting device is used for producing medium and thin cigarettes, the movable cutter and the fixed cutter can be adjusted to be close to each other, the distance between the movable cutter and the fixed cutter is reduced, and therefore short cut tobacco can be cut out, and the production quality of the medium and thin cigarettes is guaranteed.

Description

Technical Field

[0001] This utility model belongs to the field of tobacco cutting, and in particular relates to a tobacco shredding device. Background Technology

[0002] Currently, slim and medium-length cigarettes are rapidly gaining popularity in the market due to their premium and diversified features. Consequently, consumers have higher expectations for the quality and taste of cigarettes. Unlike regular cigarettes, slim and medium-length cigarettes have a relatively smaller amount of tobacco filling, which places stricter requirements on the consistency of tobacco length and density. Current conventional tobacco cutting equipment is suitable for regular cigarette production, producing longer tobacco strands. If directly applied to slim and medium-length cigarette production, it can easily lead to inconsistent density in different areas, affecting the consumer's smoking experience. Furthermore, avoiding problems such as tobacco blockage and tangling during the smoke cutting process is also related to tobacco quality, and consequently, the overall quality of cigarette production.

[0003] Patent application CN109512013A discloses a pressure-pull sliding-cutting tobacco shredding device. This device includes a frame on which a rotatable moving blade (rotating blade) and a non-rotatable fixed blade are mounted. The fixed blade extends upwards at a certain angle to the horizontal plane. The force generated by the rotation of the fixed blade drives the tobacco to slide downwards along the blade edge of the fixed blade, thus cutting the tobacco. This device can shred tobacco effectively, avoiding tangling, and the inclined arrangement of the fixed blade allows the cut tobacco to slide downwards, reducing the risk of clogging.

[0004] However, the gap between the fixed blade and the moving blade in the above-mentioned device cannot be adjusted, making it impossible to control the cutting of tobacco shreds of different lengths according to the production needs of different specifications of cigarettes, resulting in insufficient versatility. Utility Model Content

[0005] The purpose of this invention is to provide a tobacco cutting device to solve the technical problem of insufficient versatility of existing tobacco cutting devices.

[0006] To achieve the above objectives, the technical solution of the tobacco cutting device provided by this utility model is as follows:

[0007] A tobacco shredding device includes a frame, on which a movable blade support and a fixed blade support are provided. A rotatable movable blade is mounted on the movable blade support, and a fixed blade is mounted on the fixed blade support at a predetermined angle to the horizontal plane. At least one of the fixed blade support and the movable blade support is movably mounted on the frame along the radial direction of the movable blade, so that the movable blade and the fixed blade can move closer and further apart.

[0008] As a further improvement, the moving tool holder is radially movable on the frame, the fixed tool holder is fixed on the frame, and the moving tool holder and the frame are guided and engaged by a first guide structure.

[0009] As a further improvement, the first guide structure includes a guide groove located at the bottom of the moving tool holder and the top of the frame, and a guide protrusion located at the other, with the guide protrusion embedded in the guide groove and the two slidingly engaged.

[0010] As a further improvement, the moving tool holder and the fixed tool holder are guided and engaged by a second guide structure. The second guide structure includes a guide seat on one of the fixed tool holder and the moving tool holder and a guide rod on the other. The guide seat is provided with a guide hole, and the guide rod is inserted into the guide hole and slidably engaged with the guide hole.

[0011] As a further improvement, the drive motor that drives the movement of the moving tool holder is mounted on the moving tool holder, and the output end of the drive motor is connected to a gear. A rack is provided on the frame, and the gear and rack mesh to transmit power.

[0012] As a further improvement, the shearing motor that drives the rotation of the moving blade is a variable frequency motor.

[0013] As a further improvement, the moving tool includes multiple axially arranged moving tool blades. Each moving tool blade includes a blade body. The outer periphery of the blade body is provided with multiple evenly distributed sickle-shaped teeth. The tip of each sickle-shaped tooth is provided with a cutting edge. The line connecting the tip and root of the sickle-shaped tooth forms a set angle with the tangent at the root.

[0014] As a further improvement, the set angle is 10°-15°.

[0015] As a further improvement, the number of sickle teeth is 3-8.

[0016] This invention relates to a modification of key elements, and its beneficial effects are as follows: When in use, the tobacco cutting device, through the cooperation of a moving blade and a fixed blade, can cut tobacco into shreds, achieving a superior cutting effect. Unlike existing technologies, the moving and fixed blades can move closer and further apart, meaning the distance between them is variable, allowing for the cutting of tobacco shreds of different lengths. When the tobacco cutting device is used in conventional cigarette production, the moving and fixed blades can be adjusted to move further apart, increasing the distance between them, thus cutting longer tobacco shreds. When the tobacco cutting device is used in the production of medium and thin cigarettes, the moving and fixed blades can be adjusted to move closer together, decreasing the distance between them, thus cutting shorter tobacco shreds to ensure the production quality of medium and thin cigarettes. Analysis shows that the tobacco cutting device in this invention can be used in both conventional and medium and thin cigarette production, demonstrating greater versatility. Attached Figure Description

[0017] Figure 1 This is a perspective view of an embodiment of the tobacco shearing device of this utility model;

[0018] Figure 2 This is a top view of an embodiment of the tobacco shearing device of this utility model;

[0019] Figure 3 This is a front view of an embodiment of the tobacco shearing device of this utility model;

[0020] Figure 4 This is a schematic diagram of the moving blade in an embodiment of the tobacco shearing device of this utility model;

[0021] Figure 5 for Figure 4 A schematic diagram of the structure of the moving blade.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Frame; 2. Moving blade support; 3. Fixed blade support; 4. Moving blade; 5. Fixed blade; 6. Shearing motor; 7. Drive motor; 8. Gear; 9. Rack; 10. Guide protrusion; 11. Guide groove; 12. Guide rod; 13. Guide seat; 401. Blade shaft; 402. Moving blade; 4021. Blade body; 4022. Sickle tooth. Detailed Implementation

[0024] To improve the versatility of the tobacco cutting device, the basic technical concept of this invention is to configure the moving blade and the fixed blade so that they can be close to or far apart from each other, making the distance between them variable. When producing conventional cigarettes, the distance can be appropriately increased to cut longer tobacco shreds, while when producing slim cigarettes, the distance can be appropriately decreased to cut shorter tobacco shreds. Based on the above concept, the invention will be further described in detail below with reference to embodiments.

[0025] As a basic embodiment, the tobacco cutting device provided in this embodiment is as follows: Figure 1 As shown, the machine includes a frame 1, which serves as the overall mounting base. A moving blade support 2 and a fixed blade support 3 are mounted on the frame 1. A rotatable moving blade 4 is mounted on the moving blade support 2, and a fixed blade 5 is mounted on the fixed blade support 3. The fixed blade 5 forms a predetermined angle with the horizontal plane; the specific angle range can be consistent with existing technology (background art cited literature), and is not specifically limited here. Tobacco from the previous process falls between the moving blade 4 and the fixed blade 5. The rotating moving blade 4 cuts the tobacco, providing superior anti-clogging and anti-winding effects. The frame 1 has a discharge port, from which the cut tobacco shreds fall and are received by the next process.

[0026] Unlike existing technologies, in order to adjust the distance between the fixed blade 5 and the moving blade 4, at least one of the moving blade support 2 and the fixed blade support 3 in this embodiment is movable relative to the frame 1, and the direction of movement is radial to the moving blade 4. This can be divided into three cases: one is that the moving blade support 2 is movable, while the fixed blade support 3 is stationary. Figure 1Secondly, the moving tool support 2 is stationary, while the fixed tool support 3 is movable; thirdly, both the moving tool support 2 and the fixed tool support 3 are movable. Of course, a drive device is also required to achieve the "movability" of the support.

[0027] Analysis of the above structure shows that the movable blade support 2 and / or fixed blade support 3 allow the movable blade 4 and fixed blade 5 to move closer and further apart, thereby changing the distance between them. A greater distance results in a longer cut tobacco shred. For conventional cigarettes, the distance can be appropriately increased; for medium and slim cigarettes, the distance can be appropriately decreased. Therefore, the tobacco cutting device in this embodiment is applicable to the production of cigarettes of different specifications.

[0028] As a preferred embodiment, such as Figure 1 As shown, the moving tool holder 2 is radially movably mounted on the frame 1, and the fixed tool holder 3 is fixed on the frame 1. The moving tool holder 2 and the frame 1 are guided and engaged by a guide structure, which can be defined as the first guide structure. This method integrates all movable parts onto the moving tool holder 2, facilitating modular assembly.

[0029] As a preferred embodiment of the first guiding structure, such as Figures 1-3 As shown, the first guiding structure includes a guide groove 11 and a guide protrusion 10, with the guide protrusion 10 embedded in the guide groove 11 and the two slidingly engaged. Specifically, as shown in the figure, the guide groove 11 can be located at the bottom end of the moving tool support 2, and the guide protrusion 10 can be located at the top end of the frame 1. Of course, in different embodiments, the positions of the guide groove 11 and the guide protrusion 10 can be interchanged, that is, the guide protrusion 10 can be located at the bottom end of the moving tool support 2, and the guide groove 11 can be located at the top end of the frame 1.

[0030] This sliding guide mechanism of the guide protrusion 10 and guide groove 11 is simple in structure and low in cost. Of course, those skilled in the art will understand that in other embodiments, the first guide structure can also be equivalently replaced by a ball-bearing slider and slide rail combination structure.

[0031] As a preferred embodiment, such as Figures 1-3 As shown, the moving tool support 2 and the fixed tool support 3 are also guided by a guide structure, which can be defined as a second guide structure. The second guide structure includes a guide seat 13 and a guide rod 12. The guide seat 13 has a guide hole, and the guide rod 12 is inserted into the guide hole and slides within it. Similarly, as shown in the figure, the guide seat 13 can be placed on the fixed tool support 3, and the guide rod 12 can be placed on the moving tool support 2. Alternatively, the guide seat 13 can be placed on the moving tool support 2, and the guide rod 12 can be placed on the fixed tool support 3. The second guide structure and the first guide structure cooperate to improve the stability of the moving tool support 2.

[0032] As a preferred embodiment with a compact structure, such as Figures 1-3 As shown, the drive motor 7, which drives the movement of the power support, is mounted on the moving tool support 2. The output end of the drive motor 7 is connected to a gear 8. This connection refers to an indirect connection; specifically, a reducer can be connected to the power output shaft of the drive motor 7, and then the gear 8 can be connected through the reducer. A rack 9 is provided on the frame 1, and the gear 8 and rack 9 mesh for transmission. Compared to telescopic drive devices (such as electric actuators), this rack and pinion drive system allows the entire rack 9 to serve as a guide, resulting in a more compact structure.

[0033] Besides adjusting the distance between the moving blade 4 and the fixed blade 5 to change the length of the cut tobacco, as a preferred embodiment, the cutting motor 6 that drives the moving blade 4 to rotate and cut the tobacco can be a variable frequency motor. The speed of the variable frequency motor can be controlled by controlling its frequency, thereby fine-tuning the length of the tobacco. With the same distance between the moving blade 4 and the fixed blade 5, a higher motor speed allows more long tobacco to be cut, which is suitable for the production of medium and thin cigarettes.

[0034] like Figure 4 and Figure 5 As shown, the moving blade 4 here includes a blade shaft 401, on which multiple axially arranged moving blades 402 are mounted. The moving blades 402 can rotate synchronously with the blade shaft 401. Each moving blade 402 includes a blade body 4021, and the outer periphery of the blade body 4021 is provided with multiple (four in the figure) evenly distributed sickle-shaped teeth 4022 (sickle-shaped). The tip of each sickle-shaped tooth 4022 has a cutting edge, and the line connecting the tip and root of the sickle-shaped tooth 4022 forms a predetermined angle with the tangent at the root. Compared with the moving blade 402 in the prior art, in this embodiment, when the moving blade 402... Figure 4 and Figure 5 When rotated clockwise, the sickle-shaped tooth 4022 can "hook up" and cut the tobacco between the fixed knife 5 and the moving knife 4, resulting in a better anti-clogging and shearing effect.

[0035] Preferably, the aforementioned set angle, i.e., the angle between the line connecting the tip and root of the sickle-shaped tooth 4022 and the tangent at the root, can be between 10° and 15°, within which the optimal shearing effect can be obtained. Specifically, the angle can be 10°, 11°, 12°, 13°, 14°, 15°, or any intermediate value.

[0036] In addition to having four sickle-shaped teeth 4022 on the blade body 4021 as shown in the figure, it is also preferable that the number of sickle-shaped teeth 4022 is 3-8. Specifically, the number of sickle-shaped teeth 4022 can be 3, 4, 5, 6, 7, or 8.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of this utility model and is not intended to limit this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tobacco shredding device, comprising a frame, a movable blade support and a fixed blade support on the frame, wherein a rotatable movable blade is mounted on the movable blade support, and a fixed blade is mounted on the fixed blade support at a predetermined angle to the horizontal plane, characterized in that, At least one of the fixed tool holder and the moving tool holder is movably mounted on the frame along the radial direction of the moving tool, so that the moving tool and the fixed tool can move closer and further apart.

2. The tobacco shredding device according to claim 1, characterized in that, The moving tool holder is radially movably mounted on the machine frame, and the fixed tool holder is fixed on the machine frame. The moving tool holder and the machine frame are guided and engaged by a first guide structure.

3. The tobacco shredding device according to claim 2, characterized in that, The first guide structure includes a guide groove located at the bottom of the moving tool bracket and a guide protrusion located at the top of the frame, with the guide protrusion embedded in the guide groove and the two slidingly engaged.

4. The tobacco shredding device according to claim 2 or 3, characterized in that, The moving tool holder and the fixed tool holder are guided and engaged by a second guide structure. The second guide structure includes a guide seat on one of the fixed tool holder and the moving tool holder and a guide rod on the other. The guide seat is provided with a guide hole, and the guide rod is inserted into the guide hole and slidably engaged with the guide hole.

5. The tobacco shredding device according to claim 2 or 3, characterized in that, The drive motor that drives the movement of the moving tool holder is mounted on the moving tool holder. The output end of the drive motor is connected to a gear, and a rack is provided on the frame. The gear and rack mesh to transmit power.

6. The tobacco cutting device according to any one of claims 1-3, characterized in that, The shearing motor that drives the rotating blade is a variable frequency motor.

7. The tobacco cutting device according to any one of claims 1-3, characterized in that, The moving tool includes multiple moving tool blades arranged axially. Each moving tool blade includes a blade body. The outer periphery of the blade body is provided with multiple evenly distributed sickle-shaped teeth. The tip of each sickle-shaped tooth is provided with a cutting edge. The line connecting the tip and root of the sickle-shaped tooth forms a set angle with the tangent at the root.

8. The tobacco shredding device according to claim 7, characterized in that, The set angle is 10°-15°.

9. The tobacco shearing device according to claim 7, characterized in that, The number of sickle-shaped teeth is 3-8.

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