A grinding wheel fastening device for a shredder and a shredder.

Abstract

This utility model relates to the technical field of tobacco processing equipment, and more particularly to a grinding wheel fastening device for a shredder and a shredder. The grinding wheel fastening device for a shredder proposed in this utility model features mounting grooves on both the driving fixing component and the top fixing component, with flexible fastening rings placed within these grooves. The flexible fastening rings abut against the groove walls. When the top fixing component pushes the top fixing component, the grinding wheel is gradually pressed against the driving fixing component. The flexible fastening rings deform, ensuring the grinding wheel is more firmly clamped by the driving fixing component and the top fixing component, reducing slippage and improving the grinding stability of the grinding wheel. The shredder proposed in this utility model includes a grinding wheel fastening device that ensures the grinding wheel is more firmly clamped by the driving fixing component and the top fixing component, reducing slippage and improving the grinding stability of the grinding wheel.

Description

Technical Field

[0001] This utility model relates to the technical field of tobacco processing equipment, and in particular to a grinding wheel fastening device for a shredder and a shredder. Background Technology

[0002] The TOBSPIN shredder is a rotary flexible shredder manufactured by the German company, HONRO. This model features a large-diameter cutter head with eight sets of blade holders evenly distributed on it. Each set holds one blade. A drive unit supports and drives the cutter head to rotate, cutting the material, compacted by the conveying system and conveyed at a certain speed, into leaf or stem shreds of a specified width at the cutter gate position. The TOBSPIN shredder uses an external cylindrical grinding method. The drive unit rotates a grinding wheel secured by a clamping device. At the grinding position, the feed portion of the blade and adhering grease are ground away, making the blade sharp. To maintain the sharpness of the grinding wheel, it is intermittently moved to a cleaning position by a swing device, where steam and water are used for cleaning.

[0003] Currently, in the grinding device of the TOBSPIN shredder, the grinding wheel is clamped only by the pressure applied to the clamping cone in the clamping device. When the driving cone and the clamping cone wear down on the mating surface of the cone and the grinding wheel, the grinding wheel is prone to slippage, which affects the grinding quality of the blade and thus the shredding quality.

[0004] Therefore, there is an urgent need to propose a solution to this problem. Utility Model Content

[0005] The first objective of this invention is to provide a fastening device for the grinding wheel of a shredder, which solves the problem of the grinding wheel of a shredder being not securely fixed and thus easily slipping in the prior art.

[0006] The second objective of this utility model is to provide a shredder that solves the problem of the grinding wheel of the shredder being not securely fixed and thus easily slipping in the prior art.

[0007] To achieve this objective, the present invention adopts the following technical solution:

[0008] A fastening device for a shredder grinding wheel of a shredder is disclosed, used to fix the shredder grinding wheel of the shredder. The shredder grinding wheel has fastening grooves at both ends along its axial direction. The fastening device includes a driving fixing component and a tightening fixing component. One end of the driving fixing component is connected to a driving assembly, and the other end can be inserted into the fastening groove at one end of the shredder grinding wheel. One end of the tightening fixing component is connected to a tightening assembly, and the other end can be inserted into the fastening groove at the other end of the shredder grinding wheel. The driving fixing component has an installation groove along its circumference, and the tightening fixing component also has an installation groove along its circumference. The fastening device further includes flexible fastening rings, each of which is provided in one of the installation grooves. The flexible fastening rings abut against the groove wall of the fastening groove.

[0009] In some embodiments, the drive fixing member includes a drive part and a fixing part connected to each other. The drive part is used to connect with the drive assembly, and the fixing part can be inserted into a fastening groove at one end of the grinding wheel of the shredder. The fixing part has the mounting groove opened along its own circumference.

[0010] In some embodiments, the radial cross-section of the fixing part is frustum-shaped.

[0011] In some embodiments, the clamping fastener includes a connecting portion and a clamping portion connected together. The connecting portion is used to connect with the clamping assembly, and the clamping portion can be inserted into the fastening groove at the other end of the grinding wheel of the shredder. The clamping portion has the mounting groove opened along its own circumference.

[0012] In some embodiments, the radial cross-section of the clamping portion is frustum-shaped.

[0013] In some embodiments, the depth of the mounting groove is 30%-50% of the diameter of the flexible fastener.

[0014] In some embodiments, the radial cross-section of the mounting groove is semi-circular.

[0015] In some embodiments, both the drive fastener and the clamping fastener are provided with a plurality of mounting slots.

[0016] In some embodiments, the flexible fastening ring is provided with a plurality of anti-slip protrusions at intervals, and the anti-slip protrusions can abut against the fastening groove.

[0017] A shredder includes the aforementioned shredder grinding wheel fastening device.

[0018] The beneficial effects of this utility model are:

[0019] This utility model proposes a fastening device for a shredder grinding wheel of a shredder. The shredder grinding wheel has fastening grooves at both ends along its axial direction. The fastening device includes a drive fixing component and a tightening fixing component. One end of the drive fixing component is connected to a drive assembly, and the other end can be inserted into the fastening groove at one end of the shredder grinding wheel. One end of the tightening fixing component is connected to a tightening assembly, and the other end can be inserted into the fastening groove at the other end of the shredder grinding wheel. The drive fixing component and the tightening fixing component both have mounting grooves along their circumference. The fastening device also includes flexible fastening rings, each set in a mounting groove, which abut against the groove wall. By inserting one end of the driving fixing component of the fastening device into the fastening groove at one end of the grinding wheel of the shredder, and inserting one end of the tightening fixing component of the fastening device into the fastening groove at the other end of the grinding wheel, the grinding wheel of the shredder is clamped. Furthermore, by providing mounting grooves on both the driving fixing component and the tightening fixing component, and placing flexible fastening rings in the mounting grooves, the flexible fastening rings can abut against the groove walls. When the tightening component pushes the tightening fixing component to move, the grinding wheel of the shredder is gradually clamped. The flexible fastening ring, when pressed against the drive fixing component, can deform, thereby increasing the preload between the drive fixing component and the shredder grinding wheel, and between the pressing fixing component and the shredder grinding wheel. This also increases the friction between the drive fixing component and the shredder grinding wheel, making the shredder grinding wheel more firmly clamped by the drive fixing component and the top fixing component, and less prone to slippage, thus improving the grinding stability of the shredder grinding wheel.

[0020] This utility model discloses a shredder, including a shredder grinding wheel fastening device. The device clamps the grinding wheel by inserting one end of a drive fixing member into a fastening groove at one end of the grinding wheel and one end of a tightening fixing member into a fastening groove at the other end of the grinding wheel. Furthermore, both the drive fixing member and the tightening fixing member have mounting grooves, and flexible fastening rings are placed in these grooves. The flexible fastening rings abut against the groove walls. When the tightening component pushes the tightening fixing member... As the component moves, it gradually presses the grinding wheel of the shredder against the drive fixing component. The flexible fastening ring can deform, thereby increasing the preload between the drive fixing component and the grinding wheel, as well as between the pressing fixing component and the grinding wheel. This also increases the friction between the drive fixing component and the grinding wheel, as well as between the pressing fixing component and the grinding wheel, making the grinding wheel more firmly clamped by the drive fixing component and the top fixing component, and less prone to slippage, thus improving the grinding stability of the grinding wheel. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a grinding wheel fastening device for a shredder proposed in an embodiment of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of a wire cutter grinding wheel fastening device from another perspective according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the fixing part and the flexible fastening ring of the fastening device for the grinding wheel of a shredder proposed in this embodiment of the utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the top fixing component and the flexible fastening ring of the fastening device for the grinding wheel of a shredder proposed in this embodiment of the utility model;

[0026] Figure 5 This is a schematic diagram of the structure of a shredder grinding wheel fastening device, a drive assembly, and a clamping assembly, according to an embodiment of this utility model.

[0027] In the picture:

[0028] 100. Grinding wheel for shredder; 200. Drive assembly; 201. Drive mounting component; 202. Drive shaft; 203. Pulley; 300. Tightening assembly; 301. Tightening mounting component; 302. Tightening component; 303. Handwheel;

[0029] 1. Drive fixing component; 11. Drive part; 12. Fixing part; 2. Tightening fixing component; 21. Connecting part; 22. Tightening part; 3. Flexible fastening ring. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0031] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, 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. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0034] This embodiment proposes a fastening device for the grinding wheel of a shredder and a shredder to solve the problem of the grinding wheel of a shredder being not securely fixed and thus easily slipping in the prior art.

[0035] like Figure 1 , Figure 2 and Figure 5As shown, a fastening device for a shredder grinding wheel is used to fix a shredder grinding wheel 100. The shredder grinding wheel 100 has fastening grooves at both ends along its axial direction. The fastening device includes a drive fixing member 1 and a tightening fixing member 2. One end of the drive fixing member 1 is connected to a drive assembly 200, and the other end can be inserted into the fastening groove at one end of the shredder grinding wheel 100. One end of the tightening fixing member 2 is connected to a tightening assembly 300, and the other end can be inserted into the fastening groove at the other end of the shredder grinding wheel 100. The drive fixing member 1 has an installation groove along its circumference, and the tightening fixing member 2 also has an installation groove along its circumference. The fastening device also includes flexible fastening rings 3, each in the installation groove, which abut against the groove wall.

[0036] Understandably, in the prior art, the drive cone and the clamping cone clamp the grinding wheel 100 of the shredder. The rotation of the drive cone drives the grinding wheel 100 of the shredder to rotate, thereby grinding the blades of the shredder. However, when wear occurs on the mating surfaces of the drive cone and / or the clamping cone and the grinding wheel 100 of the shredder, the clamping effect of the drive cone and the clamping cone on the grinding wheel 100 of the shredder weakens, causing the grinding wheel 100 of the shredder to slip. Consequently, the blades of the shredder cannot be effectively ground, affecting the shredding quality.

[0037] To address this problem, this embodiment proposes a fastening device for a shredder grinding wheel. One end of the driving fixing member 1 of the fastening device can be inserted into a fastening groove at one end of the shredder grinding wheel 100, and one end of the tightening fixing member 2 of the fastening device can be inserted into a fastening groove at the other end of the shredder grinding wheel 100, thereby clamping the shredder grinding wheel 100. Furthermore, mounting grooves are provided on both the driving fixing member 1 and the tightening fixing member 2, and a flexible fastening ring 3 is provided in the mounting groove. The flexible fastening ring 3 abuts against the groove wall. When the tightening assembly 300 pushes the tightening fixing member 2 to move, the shredder grinding wheel 100 is gradually... The grinding wheel 100 of the shredder is pressed against the drive fixing member 1. The flexible fastening ring 3 can deform, thereby increasing the preload between the drive fixing member 1 and the grinding wheel 100 of the shredder, and between the pressing fixing member 2 and the grinding wheel 100 of the shredder. It also increases the friction between the drive fixing member 1 and the grinding wheel 100 of the shredder, and between the pressing fixing member 2 and the grinding wheel 100 of the shredder. This makes the grinding wheel 100 of the shredder more firmly clamped by the drive fixing member 1 and the top fixing member, and it is not easy to slip, thus improving the grinding stability of the grinding wheel 100 of the shredder.

[0038] It is worth noting that the grinding principle of the grinding wheel 100 of the shredder and the components of the shredder other than the grinding wheel fastening device in this embodiment are all existing technologies and will not be subject to excessive restrictions here.

[0039] For example, the drive assembly 200 includes a drive mounting member 201 and a drive shaft 202. The drive shaft 202 is rotatably mounted on the drive mounting member 201. One end of the drive shaft 202 is connected to the drive fixing member 1, and the other end is equipped with a pulley 203. The pulley 203 is connected to a motor via a transmission belt. This arrangement drives the pulley 203 to rotate via the motor, thereby driving the drive shaft 202 to rotate. It has a simple structure and reliable operation.

[0040] Exemplarily, the tightening assembly 300 includes a tightening mounting part 301, a tightening member 302, and a handwheel 303. The tightening member 302 is movably mounted on the tightening mounting part 301. The tightening mounting part 301 has a threaded hole, in which a lead screw is disposed. One end of the lead screw is connected to the handwheel 303, and the other end is movably connected to the tightening member 302. The tightening member 302 is connected to the tightening fixing member 2. This arrangement allows the lead screw to move left and right in the threaded hole by rotating the handwheel 303, which in turn moves the tightening member 302 left and right, thereby tightening or loosening the tightening fixing member 2. The operation is simple and the structure is reliable.

[0041] Of course, the types of drive component 200 and clamping component 300 are not limited to this. They can be set as needed according to the actual situation. This is not the focus of this embodiment and will not be elaborated here.

[0042] like Figures 1-4 As shown, in some optional embodiments, the drive fixing member 1 includes a drive part 11 and a fixing part 12 connected to each other. The drive part 11 is used to connect with the drive assembly 200, and the fixing part 12 can be inserted into a fastening groove at one end of the grinding wheel 100 of the shredder. The fixing part 12 has an installation groove along its circumference. This arrangement allows the drive fixing member 1 to not only satisfy the reliable connection with the drive assembly 200, but also ensure the fit with the grinding wheel 100 of the shredder, thus improving the structural rationality of the grinding wheel fastening device of the shredder.

[0043] For example, the drive unit 11 is rod-shaped, with one end connected to the drive assembly 200 and the other end connected to the fixing unit 12. This arrangement facilitates the connection between the drive unit 11 and the drive shaft of the drive assembly 200, while reducing the weight of the grinding wheel fastening device of the shredder and improving its structural rationality.

[0044] In some alternative embodiments, the radial cross-section of the fixing part 12 is frustoconical. This arrangement allows the fixing part 12 to apply a thrust that spreads outwards to the fastening groove when it is pressed against the grinding wheel 100 of the shredder, thereby enabling it to more firmly abut against the fastening groove and improving the reliability of the fastening device for the grinding wheel of the shredder.

[0045] In some optional embodiments, the clamping fastener 2 includes a connecting portion 21 and a clamping portion 22 connected to each other. The connecting portion 21 is used to connect with the clamping assembly 300, and the clamping portion 22 can be inserted into the fastening groove at the other end of the grinding wheel 100 of the shredder. The clamping portion 22 has an installation groove along its circumference. This arrangement ensures that the clamping fastener 2 can not only reliably connect with the clamping assembly 300, but also guarantee its fit with the grinding wheel 100 of the shredder, thus improving the structural rationality of the fastening device for the grinding wheel of the shredder.

[0046] For example, the connecting portion 21 of the clamping fastener 2 is rod-shaped, with one end for connecting to the clamping assembly 300 and the other end for connecting to the clamping part 22. This arrangement facilitates the connection between the clamping part 22 and the drive shaft of the clamping assembly 300, while reducing the weight of the grinding wheel fastening device for the shredder and improving its structural rationality.

[0047] In some alternative embodiments, the radial cross-section of the clamping part 22 is frustoconical. This arrangement allows the clamping part 22 to apply a radiating thrust to the fastening groove when it clamps against the grinding wheel 100 of the shredder, thereby enabling it to more firmly abut against the fastening groove and improving the reliability of the fastening device for the grinding wheel of the shredder.

[0048] In some optional embodiments, the depth of the mounting groove is 30%-50% of the diameter of the flexible fastening ring 3. This setting ensures that the flexible fastening ring 3 can be installed in the mounting groove, and also increases the contact area between the flexible fastening ring 3 and the groove wall, thereby improving the fastening effect of the flexible fastening ring 3.

[0049] For example, the depth of the mounting groove is 50% of the diameter of the flexible fastening ring 3. This setting can balance the installation stability of the flexible fastening ring 3 and the tightness of its fit with the groove wall. Of course, the percentage of the mounting groove depth to the diameter of the flexible fastening ring 3 is not specifically limited, as long as it is in the range of 30%-50%, and no further restrictions are imposed here.

[0050] It is worth noting that the radial cross-section of the fastening grooves at both ends of the grinding wheel 100 of the shredder along its own axial direction is frustoconical. Therefore, setting the tightening part 22 and the fixing part 12 to be radially frustoconical can better adapt to the shape of the fastening groove, thereby enhancing the clamping effect. Of course, when the fastening groove has other shapes, the tightening part 22 and the fixing part 12 can also be designed to adapt to other shapes of the fastening groove. They can be adjusted as needed according to actual requirements, and this embodiment does not impose too many restrictions.

[0051] In some alternative embodiments, the radial cross-section of the mounting groove is semi-circular. This arrangement allows the mounting groove to conform to the shape of the flexible fastening ring 3, improving the installation stability of the flexible fastening ring 3 and thus enhancing the fastening effect of the flexible fastening ring 3 on the grinding wheel 100 of the shredder.

[0052] In some optional embodiments, both the drive fixing member 1 and the tightening fixing member 2 are provided with multiple mounting slots. This arrangement can increase the number of flexible fastening rings 3 installed, further improving the fastening effect of the drive fixing member 1 and the tightening fixing member 2 on the grinding wheel 100 of the shredder.

[0053] For example, both the drive fixing member 1 and the tightening fixing member 2 are provided with two mounting slots. This arrangement ensures that the number of flexible fastening rings 3 installed is sufficient to improve the fastening effect on the grinding wheel 100 of the shredder, while also ensuring the contact area between the drive fixing member 1 and the tightening fixing member 2 and the wall of the fastening slot, thus avoiding slippage caused by reduced transmission efficiency.

[0054] In some optional embodiments, the flexible fastening ring 3 is provided with multiple anti-slip protrusions at intervals, which can abut against the fastening groove. This arrangement further enhances the friction between the flexible fastening ring 3 and the wall of the fastening groove, thereby improving the fastening effect on the grinding wheel 100 of the shredder and improving the reliability of the fastening device for the grinding wheel of the shredder.

[0055] This embodiment also proposes a shredder to solve the problem of slippage caused by the unstable fixing of the grinding wheel 100 in existing shredders. The shredder includes a grinding wheel fastening device. One end of the driving fixing member 1 of the fastening device can be inserted into a fastening groove at one end of the grinding wheel 100, and one end of the tightening fixing member 2 of the fastening device can be inserted into a fastening groove at the other end of the grinding wheel 100, thereby clamping the grinding wheel 100. Furthermore, mounting grooves are provided on both the driving fixing member 1 and the tightening fixing member 2, and a flexible fastening ring 3 is provided in the mounting groove. The flexible fastening ring 3 abuts against the groove wall. When the tightening component 300 pushes the tightening fixing member 2 to move, the shredder is gradually tightened. The grinding wheel 100 is pressed against the drive fixing member 1. The flexible fastening ring 3 can deform, thereby increasing the preload between the drive fixing member 1 and the grinding wheel 100 of the shredder, and between the pressing fixing member 2 and the grinding wheel 100 of the shredder. It also increases the friction between the drive fixing member 1 and the grinding wheel 100 of the shredder, and between the pressing fixing member 2 and the grinding wheel 100 of the shredder. This makes the grinding wheel 100 of the shredder more firmly clamped by the drive fixing member 1 and the top fixing member, and it is not easy to slip, thus improving the grinding stability of the grinding wheel 100 of the shredder.

[0056] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A fastening device for a grinding wheel of a shredder, used to fix a grinding wheel (100) of a shredder, wherein the grinding wheel (100) of the shredder has fastening grooves at both ends along its own axial direction, characterized in that, The fastening device includes a drive fixing member (1) and a top-tightening fixing member (2). One end of the drive fixing member (1) is used to connect with the drive assembly (200), and the other end can be inserted into the fastening groove at one end of the grinding wheel (100) of the shredder. One end of the top-tightening fixing member (2) is used to connect with the top-tightening assembly (300), and the other end can be inserted into the fastening groove at the other end of the grinding wheel (100) of the shredder. The drive fixing member (1) has an installation groove along its circumference, and the top-tightening fixing member (2) also has an installation groove along its circumference. The fastening device also includes a flexible fastening ring (3). The flexible fastening ring (3) is provided in each of the installation grooves, and the flexible fastening ring (3) can abut against the groove wall of the fastening groove.

2. The grinding wheel fastening device for a shredder according to claim 1, characterized in that, The drive fixing component (1) includes a drive part (11) and a fixing part (12) connected to each other. The drive part (11) is used to connect with the drive assembly (200). The fixing part (12) can be inserted into the fastening groove at one end of the grinding wheel (100) of the shredder. The fixing part (12) has the mounting groove opened along its own circumference.

3. The grinding wheel fastening device for a shredder according to claim 2, characterized in that, The radial cross-section of the fixing part (12) is frustum-shaped.

4. The grinding wheel fastening device for a shredder according to claim 2, characterized in that, The clamping fastener (2) includes a connecting part (21) and a clamping part (22) connected to each other. The connecting part (21) is used to connect with the clamping assembly (300). The clamping part (22) can be inserted into the fastening groove at the other end of the grinding wheel (100) of the shredder. The clamping part (22) has the mounting groove opened along its own circumference.

5. The grinding wheel fastening device for a shredder according to claim 4, characterized in that, The radial cross section of the top clamping part (22) is frustum-shaped.

6. The grinding wheel fastening device for a shredder according to claim 1, characterized in that, The depth of the mounting groove is 30%-50% of the diameter of the flexible fastening ring (3).

7. The grinding wheel fastening device for a shredder according to any one of claims 1-6, characterized in that, The radial cross-section of the mounting groove is semi-circular.

8. The grinding wheel fastening device for a shredder according to any one of claims 1-6, characterized in that, Both the drive fixing member (1) and the tightening fixing member (2) are provided with multiple mounting slots.

9. The grinding wheel fastening device for a shredder according to any one of claims 1-6, characterized in that, The flexible fastening ring (3) is provided with a plurality of anti-slip protrusions at intervals, and the anti-slip protrusions can abut against the fastening groove.

10. A tobacco shredder characterized by, Includes the grinding wheel fastening device for a shredder as described in any one of claims 1-9.

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