Double-action knife tobacco leaf breaking device
Patent Information
- Application Number
- CN202522354710.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-05
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-11-05
AI Technical Summary
目前市面上主流的烟叶打碎装置多采用单导辊和固定刀组的结构设计，其中导辊多为单一圆柱形构件，表面仅设置简单的防滑凸纹以辅助输送烟叶，刀组则通过焊接、或多组螺栓紧固的方式与导辊连接，无法根据加工需求灵活调整
[0015]本实用新型的有益效果：设置两个带外螺纹的并排圆柱形导辊配合内螺纹圆环状刀盘，通过螺纹精准匹配实现刀盘与导辊的稳固插设，确保安装同轴度与运行稳定性，避免刀盘偏移导致的打碎不均问题。双导辊并排设置形成双动输送结构，配合导辊外螺纹可平稳输送烟叶，防止烟叶卡顿或偏移，提升进料连续性。多个刀片沿刀盘轴向均匀间隔分布，结合双导辊带动刀盘的双动切削作用，能对烟叶进行全方位、多层次打碎，有效保证碎料粒度均匀性，减少粗细不均的不合格料。同时，螺纹连接结构便于刀盘、刀片的拆装维护，可根据烟叶打碎需求灵活调整刀盘数量或刀片间距，适配不同处理场景。整体结构设计合理，在提升烟叶打碎效率与质量的同时，降低了设备维护成本，实用性强。
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Figure CN224863895U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of tobacco processing equipment, and in particular to a double-moving-blade tobacco crushing device. Background Technology
[0002] In the tobacco processing industry, the shredding process in the pretreatment stage of tobacco leaves is crucial. It requires breaking bundles or sheets of tobacco leaves into uniform small pieces to ensure the looseness and uniformity of the tobacco leaves in the subsequent shredding process, which in turn affects the combustibility, filling value, and taste stability of the final cigarette product. Therefore, the performance of the tobacco shredding device is directly related to the production efficiency and product quality of the entire tobacco processing line. Currently, most mainstream tobacco shredding devices on the market adopt a structure design of a single guide roller and a fixed blade assembly. The guide roller is mostly a single cylindrical component with only simple anti-slip ridges on the surface to assist in conveying the tobacco leaves. The blade assembly is connected to the guide roller by welding or multiple sets of bolts, which cannot be flexibly adjusted according to processing requirements.
[0003] These types of devices have significant drawbacks in practical applications: the single-roller conveyor structure lacks sufficient clamping and guiding ability for tobacco leaves, easily leading to leaf misalignment and stacking, resulting in some leaves not being fully crushed. Furthermore, the fixed connection between the cutter head and the guide rollers means that during later maintenance, disassembling and assembling the cutter head requires removing multiple bolts or damaging weld points, making the operation cumbersome and time-consuming, thus limiting the device's versatility and adaptability. Utility Model Content
[0004] In view of this, this application proposes a dual-moving-blade tobacco leaf crushing device, which can improve the yield of medium-sized pieces, reduce the amount of crushed tobacco, eliminate the material blockage and crushing caused by the original fixed blade, and can be achieved without replacing any parts due to frequency conversion and distance adjustment.
[0005] This utility model provides the following technical solution: a double-acting knife tobacco leaf crushing device, characterized in that it includes: a guide roller, a cutter disc, and blades; The guide roller has a cylindrical structure, and external threads are uniformly arranged on its outer circumferential surface along the axial direction of the guide roller. The cutter head has a circular structure, and the inner edge surface of the cutter head is uniformly provided with internal threads, the size of which matches the external threads; There are multiple blades, which are evenly spaced along the direction of the cutter disc; There are two guide rollers, which are arranged side by side.
[0006] In one embodiment of the utility model, the two guide rollers are rotatable about their own axes, and the two guide rollers rotate in opposite directions.
[0007] In one embodiment of the utility model, there are multiple cutter discs, and the cutter discs can rotate and move relative to the guide rollers along the axial direction of the guide rollers to adjust the spacing between adjacent cutter discs.
[0008] In one embodiment of the utility model, two mounting holes are provided at the end of the blade, and threaded holes are provided on the outer circumferential surface of the cutter head in the circumferential direction. The blade passes through the mounting holes by bolts and is detachably connected to the threaded holes of the cutter head.
[0009] In one embodiment of the utility model, the blade is a rectangular thin sheet structure, and the end of the blade away from the mounting hole is arc-shaped.
[0010] In one embodiment of the utility model, a plurality of grooves are uniformly formed on the outer ring of the cutter disc along the circumferential direction. The grooves are shaped like the blades and extend from the edge of the cutter disc toward the center, for positioning the installation position of the blades.
[0011] In one embodiment of the utility model, six positioning grooves are uniformly formed on the outer circumferential surface of the guide roller along its circumferential direction, and the six positioning grooves penetrate the axial direction of the guide roller.
[0012] In one embodiment of the utility model, the cutter disc is fixedly connected to the guide roller by screws inserted into the positioning groove, thereby restricting the circumferential rotation of the cutter disc relative to the guide roller.
[0013] In one embodiment of the utility model, the groove end of the blade disc is chamfered to prevent scratches when the blade is inserted.
[0014] In one embodiment of the utility model, the cutting edge of the blade is treated with hot-dip alloy sand.
[0015] The beneficial effects of this utility model are as follows: Two parallel cylindrical guide rollers with external threads are paired with an annular cutter head with internal threads. Precise thread matching ensures a stable insertion of the cutter head and guide rollers, guaranteeing coaxiality and operational stability, and preventing uneven crushing caused by cutter head misalignment. The parallel arrangement of the two guide rollers forms a dual-action conveying structure, which, combined with the external threads of the guide rollers, smoothly conveys tobacco leaves, preventing jamming or misalignment and improving feeding continuity. Multiple blades are evenly spaced along the axial direction of the cutter head. Combined with the dual-action cutting action of the cutter head driven by the two guide rollers, it can crush tobacco leaves in all directions and at multiple levels, effectively ensuring uniform particle size and reducing substandard material with uneven particle size. Simultaneously, the threaded connection structure facilitates the disassembly and maintenance of the cutter head and blades. The number of cutters or the blade spacing can be flexibly adjusted according to the tobacco crushing requirements to adapt to different processing scenarios. The overall structural design is reasonable, improving the efficiency and quality of tobacco crushing while reducing equipment maintenance costs, making it highly practical.
[0016] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description
[0017] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.
[0018] Figure 1 This is a top view of the main body of a dual-moving-blade tobacco shredding device according to an embodiment of this application; Figure 2 This is a front view of the guide roller and cutter head structure according to an embodiment of this application; Figure 3 A top view of the guide roller and cutter head structure according to an embodiment of this application is shown; Figure 4 An axial cross-sectional view of the guide roller and cutter head according to an embodiment of this application is shown. Detailed Implementation Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.
[0019] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0020] 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 indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0021] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.
[0022] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.
[0023] Specific references Figures 1-4 As a dual-action tobacco leaf crushing device of this utility model, the device includes: a guide roller 1, a cutter disc 2, and blades 21; the guide roller 1 is a cylindrical structure, there are two of them, the two guide rollers 1 are arranged side by side, and the outer circumference of the guide roller 1 is uniformly provided with external threads along the axial direction; the cutter disc 2 is a ring-shaped structure, the inner diameter of the ring matches the outer diameter of the guide roller 1, and the inner edge of the cutter disc 2 is uniformly provided with internal threads, the size of the internal threads matches the external threads, for inserting the cutter disc 2 onto the guide roller 1; there are multiple blades 21, which are evenly spaced along the circumferential direction of the cutter disc 2, for crushing tobacco leaves.
[0024] Two guide rollers 1 are arranged side by side in a horizontal direction, with parallel axes and a certain distance between them. Multiple cutter discs 2 are evenly distributed axially on each guide roller 1. The cutter discs 2 are precisely engaged with the guide roller 1 via threads, allowing them to move axially along the guide roller 1. Blades 21 are evenly installed circumferentially along the cutter discs 2. The blades 21 of adjacent cutter discs 2 on the same guide roller 1 are staggered, forming a cross-cutting structure with the blades 21 on the other guide roller 1 to prevent missed cuts of tobacco leaves. For the drive method, the two guide rollers 1 are driven by independent variable frequency motors, rotating in opposite directions. For example, the left guide roller 1 rotates clockwise, and the right guide roller 1 rotates counterclockwise. The clamping force of the threads smoothly conveys the tobacco leaves, preventing them from shifting, stacking, or jamming.
[0025] Six positioning grooves 11 are evenly distributed along the circumferential direction on the outer circumferential surface of the guide roller 1, extending through the entire axial direction of the guide roller 1. The central angle between adjacent grooves is 60°, which is used to restrict the circumferential rotation of the cutter disc 2 and ensure that the cutter disc 2 rotates synchronously with the guide roller 1. Furthermore, the cutter disc 2 has a certain thickness, and 5-8 cutter discs 2 can be installed on each guide roller 1 as needed. The cutter disc 2 is fixed to the guide roller 1 by screws: the screws pass through the pre-set holes 22 on the side wall of the cutter disc 2, are inserted into the positioning grooves 11 of the guide roller 1 and tightened, which restricts the circumferential rotation of the cutter disc 2 and ensures that the cutter disc 2 rotates synchronously with the guide roller 1 without relative slippage. The shape of the positioning grooves can be triangular or rectangular, and the shape of the screw tip must be adapted to the shape of the positioning groove 11.
[0026] In one specific embodiment, the cutter disc 2 has a ring-shaped structure, with its inner diameter precisely matching the outer diameter of the guide roller 1. Furthermore, the inner edge of the cutter disc 2 is uniformly machined with internal threads, the size of which perfectly matches the external threads on the outer circumference of the guide roller 1. This allows the cutter disc 2 to be smoothly inserted onto the guide roller 1 through the threaded connection. The number of cutter discs 2 can be flexibly set according to the tobacco leaf crushing requirements, typically multiple discs. Due to the characteristics of the threaded connection, the cutter discs 2 can rotate and move relative to the guide roller 1 along its axial direction, thereby adjusting the distance between adjacent cutter discs 2 to accommodate tobacco leaf crushing requirements of different particle sizes.
[0027] The outer ring of the cutter head 2 has four grooves evenly spaced along the circumferential direction. The shape of the grooves is consistent with the rectangular structure of the blade 21, extending from the edge of the cutter head 2 towards the center. These grooves are used to precisely position the blade 21 and prevent uneven cutting caused by blade misalignment. At the same time, the ends of the grooves are chamfered to prevent the operator's hands from being scratched when installing the blade 21.
[0028] In one specific embodiment, the blade 21 is a rectangular thin-film structure with a mounting hole 23 at its end, precisely corresponding to a threaded hole on the outer circumference of the cutter head 2. A bolt passes through the mounting hole 23 and connects to the threaded hole, enabling detachable fixing of the blade 21 to the cutter head 2. When the blade 21's cutting edge wears down, a new blade can be replaced simply by removing the bolt, without disassembling the cutter head 2, reducing maintenance costs and downtime. Furthermore, the end of the blade 21 furthest from the mounting hole is arc-shaped, preventing snagging of tobacco leaves during cutting and reducing leaf breakage. The cutting edge of the blade 21 is treated with hot-dip alloy sand, significantly improving its sharpness and wear resistance, extending its service life, and simultaneously reducing leaf crushing during cutting, thus increasing the yield of broken pieces.
[0029] The specific working process of this double-acting blade tobacco shredder is as follows: First, according to the required tobacco leaf particle size, the rotating blade disc 2 moves axially along the guide roller 1, adjusting the distance between adjacent blade discs 2. Then, the blade disc 2 is fixed in the positioning groove 11 of the guide roller 1 with screws. Check the installation status of the blades 21 to ensure that the bolts are tightened and the cutting edges are undamaged. Start the variable frequency motor to make the two guide rollers 1 rotate in opposite directions at a preset speed. The tobacco leaves are conveyed from the feed conveyor belt above the double guide rollers 1 to the space between the guide rollers 1. The clamping force formed by the external thread of the guide roller 1 and the reverse rotation smoothly conveys the tobacco leaves downward, preventing the tobacco leaves from deviating. When the guide roller 1 rotates, it drives the blade disc 2 to rotate synchronously. The blades 21 on the blade disc 2 move in a circular motion with the blade disc 2. The blades 21 of adjacent blade discs 2 on the same guide roller 1 and the blades 21 on the other guide roller 1 form a cross-cutting action, performing all-round and multi-level cutting on the tobacco leaves during the conveying process, and shredding the tobacco leaves into uniform blocks. The crushed tobacco leaves fall from below the double guide roller 1 and enter the subsequent screening and loosening processes to complete the entire crushing process.
[0030] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.
Claims
1. A double-acting knife tobacco leaf crushing device, characterized in that, include: Guide rollers, cutter head, and blades; The guide roller has a cylindrical structure, and external threads are uniformly arranged on its outer circumferential surface along the axial direction of the guide roller. The cutter head has a circular structure, and the inner edge surface of the cutter head is uniformly provided with internal threads, the size of which matches the external threads; The blades are multiple and are evenly spaced along the circumferential direction of the cutter head; The number of guide rollers is two, and the two guide rollers are arranged side by side.
2. The double-acting knife tobacco leaf crushing device according to claim 1, characterized in that, The two guide rollers are rotatable about their own axes, and the two guide rollers rotate in opposite directions.
3. The double-acting knife tobacco shredder according to claim 1, characterized in that, There are multiple cutter discs, and each cutter disc can rotate and move relative to the guide roller along the axial direction of the guide roller to adjust the spacing between adjacent cutter discs.
4. The double-acting knife tobacco leaf crushing device according to claim 1, characterized in that, The blade has a mounting hole at its end, and the cutter head has a threaded hole on its outer circumferential surface. The blade is detachably connected to the cutter head by passing through the mounting hole with a bolt.
5. The double-acting knife tobacco leaf crushing device according to claim 4, characterized in that, The blade is a rectangular thin sheet structure, and the end of the blade away from the mounting hole is arc-shaped.
6. The double-acting knife tobacco shredder according to claim 1, characterized in that, The outer ring of the cutter head is provided with a plurality of grooves evenly distributed in the circumferential direction. The grooves are shaped like the blades and extend from the edge of the cutter head toward the center.
7. The double-acting knife tobacco leaf crushing device according to claim 1, characterized in that, The guide roller has six positioning grooves evenly distributed on its outer circumferential surface along its circumferential direction, and the six positioning grooves penetrate the axial direction of the guide roller.
8. The double-acting knife tobacco leaf crushing device according to claim 7, characterized in that, The cutter head is fixedly connected to the guide roller by screws inserted into the positioning groove, thereby restricting the circumferential rotation of the cutter head relative to the guide roller.
9. A double-acting knife tobacco shredder according to claim 6, characterized in that, The groove end of the cutter head is chamfered.
10. A double-acting knife tobacco leaf crushing device according to claim 1, characterized in that, The cutting edge of the blade is treated with hot-dip alloy sand.