Maintenance protection device of tobacco cutter

Abstract

The utility model relates to and discloses a maintenance protection device of a tobacco cutter. Relates to the technical field of tobacco primary processing. The tobacco cutter specifically comprises a tobacco cutter knife door, a tobacco cutter head arranged on the inner side of the tobacco cutter knife door and a protective cover arranged on the outer side of the tobacco cutter knife door. The shredding machine cutter head is used for shredding, the shredding machine cutter door is provided with a shredding machine maintenance opening, the inner side and the outer side of the shredding machine cutter door are communicated through the shredding machine maintenance opening, the shredding machine maintenance opening is used for maintaining the shredding machine, the protection cover is used for shielding the shredding machine maintenance opening, and the protection cover and the shredding machine cutter door are detachably assembled. The protective cover is arranged on the outer side of the cutter door of the tobacco cutter, when other units of the tobacco cutter are maintained, the protective cover is installed on the outer side of the cutter door of the tobacco cutter, the protective cover shields the maintenance opening of the tobacco cutter, and therefore maintenance workers are prevented from mistakenly touching a cutter head of the tobacco cutter through the exposed maintenance opening of the tobacco cutter, and the cutter head of the tobacco cutter is prevented from being damaged. And safety accidents are further caused.

Description

TECHNICAL FIELD

[0001] The utility model relates to tobacco shred technology field especially relates to a maintenance protection device of shredding machine. BACKGROUND

[0002] As an important equipment connecting leaf making and silk making sections in tobacco factory silk making workshop, shredding machine processes silk making to tobacco leaf through cutter, and a large amount of dust is easily produced on the inner wall of shredding machine in the process, so that the shredding machine must be maintained regularly to ensure production quality. However, during the maintenance period, the cutter door maintenance opening of the shredding machine is in an exposed state, and when the maintenance personnel clean the cutter door and other units, the cutter of the shredding machine may be accidentally touched through the exposed cutter door maintenance opening of the shredding machine, thereby causing a safety accident.

[0003] A kind of protection device for Tobspin shredding machine cutter disc is disclosed in Chinese patent CN218418372U published on February 3, 2023, comprising a protection plate body adapted to the cutter seat formed with a cutter discharge mechanism, the protection plate body comprises: an L-shaped protection plate, which is spliced from a first stainless steel plate and a second stainless steel plate of the same length, the first stainless steel plate and the second stainless steel plate are spliced along the length direction and bent at 90 degrees to form the L-shaped protection plate;A protection plate handle is provided on the first stainless steel plate;And a magnet is fixed on the first stainless steel plate, the L-shaped protection plate is attracted to the cutter seat by the magnet. The protection plate of the utility model is safe and not easy to break, and solves the problem that the stainless steel isolation plate cannot be applied to the cutter disc type blade protection. However, when the protection plate body of the protection device is detached from the cutter seat, a large force needs to be applied to overcome the magnetic attraction of the magnet, making the detachment of the protection plate body more laborious and unable to meet the current production needs. SUMMARY

[0004] The purpose of the utility model is to provide a maintenance protection device for a shredding machine, which can protect the maintenance personnel during the maintenance and maintenance of the shredding machine, preventing the maintenance personnel from accidentally touching the cutter of the shredding machine and causing a safety accident.

[0005] The utility model provides a kind of maintenance protection device of shredding machine, including shredding machine cutter door, the shredding machine cutter head being located in the inner side of the shredding machine cutter door, and the protective cover being located in the outer side of the shredding machine cutter door;The shredding machine cutter head is used to carry out shredding, the shredding machine cutter door is provided with shredding machine maintenance opening, the inner side and the outer side of the shredding machine cutter door are communicated by the shredding machine maintenance opening, for the maintenance of shredding machine, the protective cover is used to shield the shredding machine maintenance opening, the assembly of the protective cover and the shredding machine cutter door is detachable.

[0006] Further, the cutter head of the tobacco cutter comprises a cutter disc, a plurality of cutters arranged circumferentially on the cutter disc, and a plurality of cutter seats respectively used for fixing the cutters on the cutter disc, and the cutter disc rotates to drive the cutters to cut tobacco.

[0007] Further, the maintenance protection device further comprises a connecting member which is connected with or separated from the cutter door of the tobacco cutter, and is used for mounting or dismounting the protective cover on or from the cutter door of the tobacco cutter.

[0008] Further, the protective cover comprises a cover plate used for shielding the maintenance opening of the tobacco cutter, and the connecting member comprises electromagnets arranged on both sides of the cover plate.

[0009] Further, the connecting member further comprises a rechargeable battery arranged on the electromagnets, and the rechargeable battery is used for electrifying or de-electrifying the electromagnets.

[0010] Further, the protective cover further comprises a handle arranged on the cover plate, and the handle is used for mounting and dismounting the cover plate on or from the cutter door of the tobacco cutter.

[0011] Further, the length of the cover plate is adjustable.

[0012] Further, the cover plate comprises a main cover plate and two pairs of cover plates respectively arranged on both sides of the main cover plate, both ends of the main cover plate are movably connected with the two pairs of cover plates respectively, the electromagnets are arranged on the two pairs of cover plates respectively, and the rechargeable batteries are arranged on the electromagnets respectively.

[0013] Further, the cover plate further comprises a sliding groove arranged on the cover plate, and both ends of the main cover plate are slidably connected with the sliding grooves of the two pairs of cover plates respectively.

[0014] Further, the main cover plate is provided with a through hole, the cover plate further comprises a bolt which is arranged on one end of the main cover plate and sequentially penetrates through the through hole and the strip-shaped hole, and a nut which is arranged on one end of the bolt and is screwed with the bolt.

[0015] The maintenance protection device of the tobacco cutter has the following advantages:

[0016] (1) the outer side of the cutter door of the cutting machine of the protective device is provided with a protective cover, and the assembly of the protective cover on the cutter door is detachable, when maintaining other units of the cutting machine, the protective cover is installed on the outer side of the cutter door of the cutting machine, the maintenance opening of the cutting machine is shielded by the protective cover, so that the worker who is maintaining the cutting machine does not touch the cutter head of the cutting machine through the exposed maintenance opening of the cutting machine, and a safety accident is caused;

[0017] (2) the protective cover of the protective device comprises a cover plate, the connecting piece is an electromagnet arranged on both sides of the cover plate, and the electromagnet is adsorbed on the cutter door of the cutting machine or separated from the cutter door of the cutting machine, so that the installation or disassembly of the protective cover on the cutter door of the cutting machine can be realized, thereby making the installation and disassembly of the protective cover on the cutter door of the cutting machine simple and convenient, saving time and effort;

[0018] (3) the connecting piece of the protective device further comprises a rechargeable battery, the rechargeable battery is arranged on the electromagnet, the electromagnet is powered on or powered off through the rechargeable battery, the electromagnet has magnetism or demagnetization, the adsorption or separation of the electromagnet and the cutter door of the cutting machine is more easily realized, thereby further making the installation and disassembly of the protective cover on the cutter door of the cutting machine simple and convenient, easy to implement;

[0019] (4) the protective cover of the protective device further comprises a handle, the handle is arranged on the cover plate, when installing and dismounting the protective cover on the cutter door of the cutting machine, the electromagnet on the cover plate is adsorbed and separated from the cutter door of the cutting machine by holding the handle, thereby further making the dismounting of the protective cover on the cutter door of the cutting machine simple and convenient, easy to implement;

[0020] (5) the length of the cover plate of the protective device can be adjusted, so that the length of the cover plate can be adjusted according to the cutting machine maintenance opening of different sizes, so that the cover plate can span the cutting machine maintenance opening of different sizes and be connected with the cutter door outside the area where the cutting machine maintenance opening is located, the installation of the protective cover on the cutter door of the cutting machine is completed, and the cover plate can shield the cutting machine maintenance opening, thereby increasing the application range of the protective device;

[0021] (6) the cover plate of the protective device comprises a main cover plate and two auxiliary cover plates, the two auxiliary cover plates are arranged on both sides of the main cover plate, and the two auxiliary cover plates are movably connected with both ends of the main cover plate, so that the overall length of the cover plate can be adjusted by adjusting the connection length of the two auxiliary cover plates with both ends of the main cover plate. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the application. In these drawings, like reference numerals are used to represent similar elements.

[0023] Figure 1A maintenance protection device for a shredding machine according to an embodiment of the present application is shown in the structural diagram;

[0024] Figure 2 A shredding machine cutter head of a maintenance protection device for a shredding machine according to an embodiment of the present application is shown in the structural diagram;

[0025] Figure 3 A protective cover of a maintenance protection device for a shredding machine according to an embodiment of the present application is shown in the structural diagram;

[0026] Figure 4 A main cover plate of a maintenance protection device for a shredding machine according to an embodiment of the present application is shown in the structural diagram;

[0027] Figure 5 A vice cover plate of a maintenance protection device for a shredding machine according to an embodiment of the present application is shown in the structural diagram.

[0028] In the figure: 1, shredding machine cutter door; 11, shredding machine maintenance opening; 2, shredding machine cutter head; 21, cutter disc; 22, cutter; 23, cutter seat; 3, protective cover; 31, main cover plate; 311, through hole; 32, vice cover plate; 321, sliding groove; 322, strip-shaped hole; 33, handle; 4, electromagnet; 5, rechargeable battery. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application, and all other embodiments obtained by those skilled in the art without creative labor on the basis of the embodiments in the present application belong to the protection scope of the present application.

[0030] Please refer to Figures 1-5 A maintenance protection device for a shredding machine according to an embodiment of the present application comprises a shredding machine cutter door 1, a shredding machine cutter head 2 arranged on the inner side of the shredding machine cutter door 1, and a protective cover 3 arranged on the outer side of the shredding machine cutter door 1; the shredding machine cutter head 2 is used for shredding, the shredding machine cutter door 1 is provided with a shredding machine maintenance opening 11, the shredding machine maintenance opening 11 communicates the inner side and the outer side of the shredding machine cutter door 1, and is used for maintaining the shredding machine, the protective cover 3 is used for shielding the shredding machine maintenance opening 11, and the assembly of the protective cover 3 and the shredding machine cutter door 1 is detachable.

[0031] In the present application, the maintenance protection device comprises the shredding machine cutter door 1, the shredding machine cutter head 2 and the protective cover 3, the shredding machine cutter head 2 is arranged on the inner side of the shredding machine cutter door 1 and is used for shredding, in this process, a large amount of dust is prone to be generated on the inner wall of the shredding machine, and the shredding machine must be maintained regularly to ensure the production quality.

[0032] Therefore, the tobacco cutter maintenance opening 11 is arranged on the tobacco cutter door 1, and the tobacco cutter maintenance opening 11 is in communication with the inner side and the outer side of the tobacco cutter door 1, so that the staff can maintain the inside of the tobacco cutter through the tobacco cutter maintenance opening 11 on the outer side of the tobacco cutter door 1, thereby ensuring the service life and production quality of the tobacco cutter.

[0033] However, during the maintenance, the tobacco cutter maintenance opening 11 is in an exposed state, and when the maintenance personnel clean the grinding wheel and other units by facing away from the tobacco cutter door 1, the tobacco cutter head 2 exposed through the tobacco cutter maintenance opening 11 has a safety hazard at this time.

[0034] Therefore, in the present application, the outer side of the tobacco cutter door 1 is provided with a protective cover 3, and the protective cover 3 is detachably assembled on the tobacco cutter door 1. When maintaining other units of the tobacco cutter, the protective cover 3 is installed on the outer side of the tobacco cutter door 1 to shield the tobacco cutter maintenance opening 11, thereby preventing the staff who are maintaining from accidentally touching the tobacco cutter head 2 through the exposed tobacco cutter maintenance opening 11, thereby causing a safety accident.

[0035] When maintaining the tobacco cutter head 2, the protective cover 3 is detached from the outer side of the tobacco cutter door 1 to expose the tobacco cutter maintenance opening 11, so that the staff can maintain the tobacco cutter head 2 on the inner side of the tobacco cutter door 1 through the tobacco cutter maintenance opening 11, thereby ensuring the service life of the tobacco cutter head 2 and the cutting quality.

[0036] In the present embodiment, the tobacco cutter head 2 includes a cutter disc 21, a plurality of cutters 22 arranged circumferentially along the cutter disc 21, and a plurality of cutter seats 23 respectively fixedly installed on the cutter disc 21, and the cutter disc 21 rotates to drive the cutters 22 to cut tobacco. In the present application, the tobacco cutter head 2 includes the cutter disc 21, the plurality of cutters 22, and the plurality of cutter seats 23, the plurality of cutter seats 23 respectively install the plurality of cutters 22 circumferentially on the cutter disc 21, so that the plurality of cutters 22 are driven to rotate by the rotation of the cutter disc 21 to cut tobacco, thereby improving the cutting efficiency of the tobacco cutter and the production efficiency.

[0037] In the embodiment, the maintenance protection device further comprises a connecting member which is detachably assembled with the cutter door 1 of the cutter. The connecting member is connected with the cutter door 1 of the cutter, and the protective cover 3 is fixedly installed on the cutter door 1 of the cutter, so that the exposed maintenance opening 11 of the cutter is shielded by the protective cover 3, and the worker performing maintenance is prevented from accidentally touching the cutter head 2 through the exposed maintenance opening 11 of the cutter, thereby causing a safety accident. The connecting member is separated from the cutter door 1 of the cutter, and the protective cover 3 is detached from the cutter door 1 of the cutter, so that the worker can perform maintenance on the cutter head 2 inside the cutter door 1 of the cutter through the maintenance opening 11 of the cutter, thereby ensuring the service life of the cutter head 2 and the cutting quality.

[0038] In the embodiment, the protective cover 3 comprises a cover plate for shielding the maintenance opening 11 of the cutter, and the connecting member is an electromagnet 4 arranged on both sides of the cover plate. The electromagnet 4 is energized to be adsorbed on the cutter door 1 of the cutter, so as to install the cover plate on the cutter door 1 of the cutter. The electromagnet 4 is de-energized to be separated from the cutter door 1 of the cutter, so as to detach the cover plate from the cutter door 1 of the cutter.

[0039] In the application, the protective cover 3 comprises a cover plate, and the connecting member is an electromagnet 4 arranged on both sides of the cover plate. The electromagnet 4 has magnetism after being energized, so as to be adsorbed on the cutter door 1 of the cutter through the electromagnet 4, and the two sides of the cover plate are fixed on the cutter door 1 of the cutter, thereby realizing the fixed installation of the protective cover 3 on the cutter door 1 of the cutter. The electromagnet 4 loses magnetism after being de-energized, so that the electromagnet 4 on both sides of the cover plate can be easily separated from the cutter door 1 of the cutter, and the cover plate can be detached from the cutter door 1 of the cutter, thereby realizing the detachment of the protective cover 3 on the cutter door 1 of the cutter. Furthermore, the installation and detachment of the protective cover 3 on the cutter door 1 of the cutter are simple and convenient, and time and labor are saved.

[0040] In the embodiment, the connecting member further comprises a charging battery 5 arranged on the electromagnet 4, and the charging battery 5 is used for energizing and de-energizing the electromagnet 4. In the application, the connecting member further comprises the charging battery 5 arranged on the electromagnet 4. The electromagnet 4 is energized by the charging battery 5, so as to have magnetism, thereby enabling the electromagnet 4 to be adsorbed on the cutter door 1 of the cutter, and realizing the fixed installation of the protective cover 3 on the cutter door 1 of the cutter. The electromagnet 4 is de-energized by the charging battery 5, so as to lose magnetism, thereby enabling the electromagnet 4 to be easily separated from the cutter door 1 of the cutter, and realizing the detachment of the protective cover 3 on the cutter door 1 of the cutter.

[0041] It can be predicted that the charging battery 5 is provided with a switch button. The charging battery 5 can be switched between energizing and de-energizing the electromagnet 4 by pressing the switch button, so as to make the use of the maintenance protection device more simple and convenient, easy to implement, and improve the practicality of the maintenance protection device.

[0042] In the embodiment, the protective cover 3 further comprises a handle 33 arranged on the cover plate, which is used for mounting and dismounting the cover plate on the cutter door 1. In the application, the protective cover 3 further comprises the handle 33 arranged on the cover plate, which is used for mounting and dismounting the protective cover 3 on the cutter door 1, so that the electromagnet 4 on the cover plate is attracted to or separated from the cutter door 1 by holding the handle 33, thereby further facilitating the dismounting of the protective cover 3 on the cutter door 1.

[0043] In the embodiment, the length of the cover plate is adjustable. Different models of cutters have different sizes of cutter maintenance openings 11. In the application, the electromagnet 4 arranged on both sides of the cover plate is used to attract or separate the cutter door 1, so that the cover plate is mounted on or dismounted from the cutter door 1, thereby shielding or opening the cutter maintenance opening 11 arranged on the cutter door 1.

[0044] Therefore, it can be predicted that the length of the cover plate is greater than the length of the cutter maintenance opening 11, so that the cover plate can be connected to the cutter door 1 outside the area where the cutter maintenance opening 11 is located after crossing the cutter maintenance opening 11. Since the cover plate shields the cutter maintenance opening 11, it is to prevent the maintenance personnel from accidentally touching the cutter head 2 through the exposed cutter maintenance opening 11, thereby causing a safety accident.

[0045] Therefore, the cover plate does not need to completely close the cutter maintenance opening 11, but only needs to prevent the personnel from contacting the cutter head 2 located inside the cutter door 1 through the cover plate and the cutter maintenance opening 11, that is, the width of the cover plate can be greater than or slightly smaller than the width of the cutter maintenance opening 11.

[0046] According to the above description, for different models of cutters with different sizes of cutter maintenance openings 11, a cover plate with the same width can be adapted to different sizes of cutter maintenance openings 11, but as the length of the cutter maintenance opening 11 increases, a cover plate with the same length may not be able to be connected to the cutter door 1 outside the area where the cutter maintenance opening 11 is located after crossing the cutter maintenance opening 11, thereby causing the protective cover 3 to be unable to adapt to different sizes of cutter maintenance openings 11.

[0047] Therefore, in the present application, the length of the cover plate can be adjusted, so as to adjust the length of the cover plate according to the maintenance opening 11 of the cutter with different sizes, so that the length of the cover plate is always greater than the length of the cutter maintenance opening, so that the cover plate can be connected with the cutter door 1 outside the area where the cutter maintenance opening 11 is located after crossing the cutter maintenance opening 11 with different sizes, so as to complete the installation of the protective cover 3 on the cutter door 1, and the cover plate can shield the cutter maintenance opening 11, thereby increasing the application range of the present maintenance protection device.

[0048] In the present embodiment, the cover plate includes a main cover plate 31 and two pairs of cover plates 32 respectively arranged on both sides of the main cover plate 31, and the two ends of the main cover plate 31 are respectively connected with the two pairs of cover plates 32, and the electromagnet 4 is arranged on the two pairs of cover plates 32 respectively, and the coil is arranged on the two electromagnets 4 respectively. Specifically, in the present application, the cover plate includes a main cover plate 31 and two pairs of cover plates 32, the two pairs of cover plates 32 are respectively arranged on both sides of the main cover plate 31, and the two pairs of cover plates 32 are respectively connected with the two ends of the main cover plate 31, so as to adjust the connection length of the two pairs of cover plates 32 with the two ends of the main cover plate 31, and realize the adjustment of the overall length of the cover plate.

[0049] In the foregoing, the installation or disassembly of the cover plate on the cutter door 1 is realized by the adsorption or separation of the electromagnets 4 on both sides of the cover plate and the cutter door 1, so when the cover plate is arranged in a split structure composed of the main cover plate 31 and the cover plates 32 on both sides, one electromagnet 4 is arranged on each of the cover plates 32 on both sides, and one rechargeable battery 5 is arranged on each of the electromagnets 4, and the installation or disassembly of the protective cover 3 on the cutter door 1 is realized by the adsorption or separation of the two electromagnets 4 and the cutter door 1.

[0050] In the present embodiment, the cover plate 32 is provided with a sliding groove 321, and the two ends of the main cover plate 31 are respectively connected with the sliding grooves 321 of the two cover plates 32. In the present application, the two cover plates 32 are provided with sliding grooves 321, and the two ends of the main cover plate 31 are respectively connected with the sliding grooves 321 of the two cover plates 32, and the connection length of the two cover plates 32 with the two ends of the main cover plate 31 can be adjusted by horizontally sliding the two ends of the main cover plate 31 in the sliding grooves 321 of the two cover plates 32, so as to realize the adjustment of the overall length of the cover plate.

[0051] In the present embodiment, the main cover plate 31 is provided with a through hole 311, and the cover plate 32 is provided with a strip-shaped hole 322, and the cover plate further includes a bolt which is sequentially threaded through the through hole 311 and the strip-shaped hole 322, and a nut which is screwed with the bolt and is sequentially threaded through the through hole 311 and the strip-shaped hole 322. Further, in the present application, the main cover plate 31 is provided with a through hole 311, and the sliding groove 321 of the cover plate 32 is provided with a strip-shaped hole 322.

[0052] When the two ends of the main cover plate 31 are horizontally slid in the sliding grooves 321 of the two auxiliary cover plates 32 respectively, the overall length of the cover plate is adjusted to a specified length, and then the one end of the bolt is sequentially penetrated through the through hole 311 and the strip-shaped hole 322, and the nut is screwed with the one end of the bolt penetrated through the through hole 311 and the strip-shaped hole 322, so as to realize the fixation of the two auxiliary cover plates 32 at the two ends of the main cover plate 31, and further realize the fixation of the overall length of the cover plate.

[0053] When the nut is unscrewed from the one end of the bolt penetrated through the through hole 311 and the strip-shaped hole 322, the two ends of the main cover plate 31 continue to be horizontally slid in the sliding grooves 321 of the two auxiliary cover plates 32 respectively, so as to adjust the length of the overall cover plate, and further make the application range of the protective device wider and the practicability stronger.

[0054] The above description can be implemented alone or in various combinations, and these variants are within the protection scope of the present application.

[0055] It should be noted that, in this document, the relationship terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply that there is any such actual relationship or order between these entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment containing a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or equipment including the element.

[0056] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit it. Although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A maintenance and protection device for a shredder, characterized in that: The device comprises a cutter door (1), a cutter head (2) arranged inside the cutter door (1), and a protective cover (3) arranged outside the cutter door (1). The cutter head (2) is used for cutting tobacco. The cutter door (1) is provided with a cutter maintenance opening (11) for communicating the inside and outside of the cutter door (1) and for maintaining the cutter. The protective cover (3) is used for shielding the cutter maintenance opening (11). The protective cover (3) is detachably assembled with the cutter door (1).

2. A maintenance guard for a tobacco cutter as claimed in claim 1, characterised in that: The cutter head (2) comprises a cutter disc (21), a plurality of cutters (22) arranged circumferentially on the cutter disc (21), and a plurality of cutter seats (23) respectively fixedly arranged on the cutter disc (21). The cutter disc (21) rotates to drive the cutters (22) to cut tobacco.

3. A maintenance guard for a tobacco cutter as defined in claim 1, wherein: The maintenance protection device further comprises a connecting member which is connected with or separated from the cutter door (1) to assemble or disassemble the protective cover (3) on or from the cutter door (1). The connecting member is detachably assembled with the cutter door (1).

4. A maintenance guard for a tobacco cutter as claimed in claim 3, characterised in that: The protective cover (3) comprises a cover plate which is used for shielding the cutter maintenance opening (11). The connecting member comprises electromagnets (4) arranged on both sides of the cover plate. The electromagnets (4) are energized to be adsorbed on the cutter door (1) to assemble the cover plate on the cutter door (1). The electromagnets (4) are de-energized to be separated from the cutter door (1) to disassemble the cover plate from the cutter door (1).

5. A maintenance guard for a tobacco cutter as claimed in claim 4, characterised in that: The connecting member further comprises a rechargeable battery (5) arranged on the electromagnets (4). The rechargeable battery (5) is used for energizing or de-energizing the electromagnets (4).

6. A maintenance guard for a tobacco cutter as defined in claim 4, wherein: The protective cover (3) further comprises a handle (33) arranged on the cover plate. The handle (33) is used for assembling and disassembling the cover plate on the cutter door (1).

7. A maintenance guard for a tobacco cutter as defined in claim 5, wherein: The length of the cover plate is adjustable.

8. A maintenance guard for a tobacco cutter as defined in claim 7, wherein: The cover plate comprises a main cover plate (31) and two pairs of cover plates (32) arranged on both sides of the main cover plate (31). The two ends of the main cover plate (31) are movably connected with the two pairs of cover plates (32). The electromagnets (4) are arranged on the two pairs of cover plates (32). The rechargeable battery (5) is arranged on the electromagnets (4).

9. A maintenance guard for a tobacco cutter as defined in claim 8, wherein: The cover plates (32) are provided with sliding grooves (321). The two ends of the main cover plate (31) are slidably connected with the sliding grooves (321) of the two pairs of cover plates (32).

10. A maintenance guard for a tobacco cutter as defined in claim 9, wherein: The main cover plate (31) is provided with a through hole (311), the auxiliary cover plate (32) is provided with a strip-shaped hole (322), the cover plate further comprises a bolt which penetrates the through hole (311) and the strip-shaped hole (322) in sequence, and a nut which is screwed with one end of the bolt and penetrates the through hole (311) and the strip-shaped hole (322) in sequence.

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