An electrically driven tensioning spindle and a method of using the same

Abstract

The application relates to an electrically-driven tensioning shaft and a use method thereof, and relates to the technical field of tobacco mechanical equipment. The electrically-driven tensioning shaft comprises a shell which comprises a shell body and an end cover, a plurality of containing holes are formed in the side wall of the shell body in the circumferential direction and are communicated with the inside of the shell body; a plurality of tensioning assemblies are arranged, each tensioning assembly is at least partially arranged in one containing hole and is at least partially located in the shell body; a cone pushing mechanism comprises a cone pushing body, the outer side wall of the cone pushing body is provided with a sliding groove, the bottom surface of the sliding groove is a first inclined surface; the end surface of the tensioning assembly towards the shell axis is at least partially abutted against the first inclined surface; a driving assembly is configured to drive the cone pushing body to move towards the end cover after being electrified; and an elastic reset mechanism is configured to push the cone pushing body to reset after being de-energized, so that the tensioning assembly moves radially outward and partially extends out of the shell body. The application has a compact structure, realizes the electrically-driven tensioning action of the tensioning shaft, has good tensioning effect and high working efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tobacco mechanical equipment, in particular to an electrically-driven tensioning shaft and a use method thereof. BACKGROUND

[0002] Waterproof paper is a kind of paper used for wrapping outside of a cigarette filter, and for bonding a filter stick to the end of a cigarette rod. At present, the raw material paper roll needs to be fixed on a tensioning shaft in a waterproof paper production device, so as to be positioned by tensioning of the tensioning shaft.

[0003] In the related art, the rotating power mechanism of the tensioning shaft is generally installed on the back of the tensioning shaft base, and the rotation of the tensioning shaft is controlled by cooperation of a motor and a shaft coupling. The tensioning action of the tensioning shaft is mostly completed by hand screwing threads or air gun inflation. Not only is the tensioning effect poor, but also when replacing the roll core, the threads need to be manually unscrewed or the air needs to be released, resulting in high labor intensity and low efficiency. SUMMARY

[0004] In view of the defects in the prior art, the purpose of the present application is to provide an electrically-driven tensioning shaft and a use method thereof, so as to solve the problems of poor tensioning effect, high labor intensity and low efficiency when replacing the roll core in the related art.

[0005] The first aspect of the present application provides an electrically-driven tensioning shaft, which comprises:

[0006] a shell comprising a hollow shell body with open ends and an end cover buckled to one end opening, and a plurality of accommodating holes are formed in the side wall of the shell body in the circumferential direction and communicated with the interior of the shell body;

[0007] a plurality of tensioning assemblies, each of which is at least partially arranged in one of the accommodating holes and at least partially located in the shell body;

[0008] a cone pushing mechanism comprising a cone pushing body in a cylindrical shape, which is slidably sleeved in the shell body, and the outer side wall of the cone pushing body is provided with a sliding groove corresponding to each of the tensioning assemblies, and the bottom surface of the sliding groove is a first inclined surface, and the end surface of the tensioning assembly facing the axis of the shell body is at least partially abutted on the first inclined surface;

[0009] a driving assembly arranged in the shell body, which is configured to drive the cone pushing body to move towards the end cover after being powered on, so as to move the tensioning assembly radially inwardly and not to extend out of the shell body;

[0010] a resilient reset mechanism configured to reset the cone pushing body after being powered off, so as to move the tensioning assembly radially outwardly and partially extend out of the shell body.

[0011] In some embodiments, the tensioning assembly includes a limiting portion and two tensioning claws extending outwardly along the same end surface of the limiting portion, each accommodating hole includes two through holes arranged at intervals, and each tensioning claw is movably arranged in one through hole.

[0012] A limiting groove is formed between the two tensioning claws, and an elastic member is arranged in the limiting groove, one end of the elastic member abuts against the bottom wall of the limiting groove, and the other end abuts against the inner side wall of the shell.

[0013] In some embodiments, the end surface of the tensioning assembly towards the shell axis is a second inclined surface that abuts against the first inclined surface.

[0014] In some embodiments, the end surface of the tapered pushing body at the shallow end of the sliding groove is provided with an extension, the elastic return mechanism is sleeved on the extension, one end of the elastic return mechanism abuts against the end surface of the tapered pushing body, and the other end abuts against the end cover.

[0015] In some embodiments, the tapered pushing body is provided with a receiving cavity, and the extension is provided with a positioning cavity in communication with the receiving cavity; the driving assembly includes:

[0016] An electromagnet, the electromagnet is a coil type electromagnet, and the cross-sectional dimension of the electromagnet is smaller than the cross-sectional dimension of the receiving cavity;

[0017] A moving iron core arranged in the receiving cavity and the positioning cavity, when the electromagnet is not powered, at least part of the moving iron core arranged in the receiving cavity is inserted into the electromagnet, and the electromagnet is at least partially sleeved in the receiving cavity.

[0018] In some embodiments, the end of the moving iron core inserted into the positioning cavity is provided with external threads, and the positioning cavity is provided with internal threads matched with the external threads.

[0019] In some embodiments, the end of the shell away from the end cover is provided with a base with an outer diameter larger than the outer diameter of the shell, two electrode rings are sleeved on the base, an insulating ring is arranged between the two electrode rings, a wiring slot is formed on the base for the lead wire to pass through, and the two electrode rings are connected with the electromagnet through the lead wire.

[0020] In some embodiments, the electrically driven tensioning shaft further includes a base, and the middle part of the base is provided with a mounting hole;

[0021] The end surface of the base away from the end cover is provided with an extension shaft, and the extension shaft is mounted in the mounting hole through a bearing.

[0022] In some embodiments, the end surface of the base towards the base is further provided with a limiting table, and the limiting table is provided with a limiting hole for the telescopic electrode to pass through.

[0023] When the telescopic electrode passes through the limiting hole and contacts the electrode ring, the electromagnet is powered on, and the moving iron core pushes the conical pushing mechanism to move in the direction of the end cover under the repulsive force.

[0024] The second aspect of the application provides a method for using the electrically-driven tensioning shaft, which comprises the steps of installing a barrel core and resetting a lock.

[0025] The step of installing the barrel core comprises the following steps:

[0026] The driving assembly is powered on, the driving assembly drives the conical pushing mechanism to move in the direction of the end cover, so that the tensioning assembly moves radially inward and does not protrude from the shell, and the barrel core is sleeved on the shell.

[0027] The step of resetting the lock comprises the following steps:

[0028] After the driving assembly is powered off, the elastic resetting mechanism pushes the conical pushing mechanism to reset, so that the tensioning assembly moves radially outward and partially protrudes from the shell, and the barrel core is tensioned.

[0029] The technical scheme provided by the application has the following beneficial effects:

[0030] The electrically-driven tensioning shaft and the method for using the same are provided in the embodiments of the application. Since the side wall of the shell is provided with a plurality of accommodating holes which are in communication with the inside of the shell, each tensioning assembly is at least partially arranged in one accommodating hole and at least partially located in the shell, and the end face of the tensioning assembly towards the axis of the shell at least partially abuts against the first inclined surface, when the driving assembly is powered on, the driving assembly can drive the conical pushing body to move in the direction of the end cover, so that the tensioning assembly moves radially inward along the shell and does not protrude from the shell, and when the driving assembly is powered off, the elastic resetting mechanism can push the conical pushing body to reset, so that the tensioning assembly moves radially outward and partially protrudes from the shell. Therefore, the electrically-driven tensioning shaft has a compact structure, the barrel core can be conveniently replaced when the driving assembly is powered on and the tensioning assembly does not protrude from the shell, and the tensioning action is completed when the driving assembly is powered off and the tensioning assembly protrudes from the shell. The electrically-driven tensioning action of the tensioning shaft is realized, the tensioning effect is good, and the working efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0032] Figure 1 The structure of the electrically-driven tensioning shaft in the embodiments of the application is shown in the figure.

[0033] Figure 2 is a partial cross-sectional schematic view of the embodiment of the application; Figure 1

[0034] Figure 3 is a structural schematic view of the embodiment of the application when the electrically driven tensioning shaft is powered on;

[0035] Figure 4 is a partial cross-sectional schematic view of the embodiment of the application; Figure 3

[0036] Figure 5 is a schematic view of the installation of the tensioning assembly of the embodiment of the application;

[0037] Figure 6 is a schematic view of the cooperation of the tensioning assembly and the conical pushing mechanism of the embodiment of the application;

[0038] Figure 7 is a schematic view of the connection of the shell and the base of the embodiment of the application.

[0039] Reference signs:

[0040] 1, shell; 11, end cover; 12, accommodating hole;

[0041] 2, tensioning assembly; 21, limiting part; 22, tensioning claw; 23, limiting groove; 24, elastic member;

[0042] 3, conical pushing mechanism; 31, conical pushing body; 311, accommodating cavity; 32, extension part; 321, positioning cavity;

[0043] 4, elastic reset mechanism;

[0044] 5, electromagnet;

[0045] 6, moving iron core;

[0046] 7, base; 71, wiring slot; 72, extension shaft;

[0047] 8, electrode ring; 81, telescopic electrode;

[0048] 9, base; 91, bearing; 92, limiting table. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solutions and advantages of the embodiments of the application clearer, the technical solutions in the embodiments of the application will be described clearly and completely below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the application.

[0050] ​​The embodiment of the present application provides an electrically-driven tensioning shaft and a use method thereof, which can solve the problems of poor tensioning effect of the tensioning shaft, high labor intensity and low efficiency when replacing the drum core in the prior art.

[0051] As shown in Figure 1 and Figure 2 , an electrically-driven tensioning shaft comprises a shell, a tensioning assembly 2, a conical pushing mechanism 3, a driving assembly and an elastic reset mechanism 4.

[0052] The shell comprises a shell body 1 and an end cover 11. The shell body 1 is a hollow shell body with both ends open, and the end cover 11 is buckled at one end opening of the shell body 1. A plurality of accommodating holes 12 are formed in the side wall of the shell body 1 in the circumferential direction and communicate with the inside of the shell body 1, and the plurality of accommodating holes 12 are uniformly distributed.

[0053] The tensioning assembly 2 is provided with a plurality of tensioning assemblies 2, each of which is at least partially arranged in one of the accommodating holes 12 and at least partially located in the shell body 1, and the tensioning assembly 2 can move radially along the shell body 1. When the tensioning assembly 2 moves radially along the shell body 1 to the outside of the shell body, the tensioning assembly 2 can partially extend out of the shell body 1.

[0054] The conical pushing mechanism 3 comprises a conical pushing body 31 in the shape of a cylinder, which is slidably sleeved in the shell body 1. The outer side wall of the conical pushing body 31 is provided with a sliding groove corresponding to each tensioning assembly 2. The sliding groove is a through groove parallel to the axis of the conical pushing body 31, and the bottom surface of the sliding groove is a first inclined surface. Therefore, the number of accommodating holes 12, the number of tensioning assemblies 2 and the number of sliding grooves are the same.

[0055] At least part of the tensioning assembly 2 located in the shell body 1 is located in the sliding groove, and the end surface of the tensioning assembly 2 facing the axis of the shell body 1 is at least partially abutted against the first inclined surface, so that the tensioning assembly 2 can move radially along the shell body 1 with the axial movement of the conical pushing body 31.

[0056] As shown in Figure 3 and Figure 4 , the driving assembly is arranged in the shell body 1. The driving assembly is configured to drive the conical pushing body 31 to move towards the end cover 11 after being powered on, so that the tensioning assembly 2 moves radially inward and at least partially passes through the accommodating hole 12 and does not extend out of the shell body 1.

[0057] The elastic reset mechanism 4 is arranged in the shell body 1 and is configured to push the conical pushing body 31 to reset after being powered off, so that the tensioning assembly 2 moves radially outward and partially extends out of the shell body 1.

[0058] In this embodiment, the electrically driven tensioning shaft, when energized, drives the cone-shaped pusher body 31 to move towards the end cover 11, causing the tensioning component 2 to move radially inward along the housing 1 without extending beyond it. When the drive assembly is de-energized, the elastic reset mechanism 4 pushes the cone-shaped pusher body 31 to reset, causing the tensioning component 2 to move radially outward and partially extend beyond the housing 1. Therefore, this electrically driven tensioning shaft has a compact structure. When the drive assembly is energized and the tensioning component 2 is not extending beyond the housing 1, the core can be easily replaced. When the drive assembly is de-energized and the tensioning component 2 extends beyond the housing 1, the tensioning action is completed. This not only achieves the electrically driven tensioning action of the tensioning shaft but also provides a good tensioning effect and high working efficiency.

[0059] like Figure 5 As shown in this embodiment, each tensioning component 2 includes a limiting part 21 and two tensioning claws 22.

[0060] Two tensioning claws 22 extend outward along the same end face of the limiting portion 21. The limiting portion 21 is located inside the housing, and the tensioning claws 22 are at least partially inserted into the receiving holes 12. Accordingly, each receiving hole 12 includes two through holes spaced apart, and the two through holes are arranged along the axial direction of the housing 1. Each tensioning claw 22 is movably inserted into one of the through holes.

[0061] Preferably, a limiting groove 23 is formed between the two tensioning claws 22, and an elastic element 24 is provided in the limiting groove 23. One end of the elastic element 24 abuts against the bottom wall of the limiting groove 23, and the other end abuts against the inner side wall of the housing 1. Optionally, the inner side wall of the housing 1 is also provided with a slot adapted to the elastic element 24, and the end of the elastic element 24 away from the limiting groove 23 abuts against the bottom wall of the slot to limit the elastic element 24.

[0062] In this embodiment, the elastic element 24 is a compression spring. After the cone-push mechanism 3 moves towards the end cover 11 under the driving action of the drive assembly, the compression spring allows the limiting part 21 and the tensioning claw 22 to move together into the housing 1 under the action of elastic force. After the cone-push mechanism 3 resets, the force of the tensioning claw 22 extending is determined by the elastic force of the elastic element 24, the inclination angle of the first inclined surface, and the frictional force between the limiting part 21 and the first inclined surface. Therefore, the tensioning force on the cylinder core after the tensioning claw 22 extends can be adjusted according to actual needs.

[0063] Furthermore, the end face of the tensioning component 2 facing the axis of the housing 1 is a second inclined surface that abuts against the first inclined surface. The abutting fit of the two inclined surfaces can improve the movement stability of the tensioning component 2. Since the second inclined surface of the limiting part 21 is always partially abutting against the first inclined surface, the tensioning claw 22 will never disengage from the receiving hole 12.

[0064] like Figure 6As shown, the bottom surface of the sliding groove is inclined, so that the two ends of the cone pushing body 31 can be divided into a shallow end and a deep end of the sliding groove. Preferably, the end face of the cone pushing body 31 at the shallow end of the sliding groove is provided with an extension 32, that is, the end face of the cone pushing body 31 towards the end cover 11 is provided with an extension 32. In this embodiment, the cone pushing body 31 and the extension 32 are integrally formed.

[0065] The elastic reset mechanism 4 is sleeved on the extension 32, and one end of the elastic reset mechanism 4 abuts against the end face of the large-diameter side of the cone pushing body 31, and the other end of the elastic reset mechanism 4 abuts against the end cover 11.

[0066] In other embodiments, the elastic reset mechanism 4 can also abut against the end cover 11 at one end and be directly fixed to the end of the extension 32 at the other end.

[0067] Further, the cone pushing body 31 is provided with a receiving cavity 311, and the extension 32 is provided with a positioning cavity 321 communicating with the receiving cavity 311.

[0068] In this embodiment, the driving assembly includes an electromagnet 5 and a moving iron core 6. The electromagnet 5 is a coil type electromagnet 5, and the moving iron core 6 is a permanent magnet core.

[0069] The cross-sectional dimension of the electromagnet 5 is smaller than the cross-sectional dimension of the receiving cavity 311 of the cone pushing body 31. The moving iron core 6 is arranged in the receiving cavity 311 and the positioning cavity 321.

[0070] Optionally, the receiving cavity 311 is a cylindrical cavity, and the electromagnet 5 is a cylinder with an outer diameter smaller than the inner diameter of the receiving cavity 311.

[0071] When the electromagnet 5 is not energized, at least part of the moving iron core 6 located in the receiving cavity 311 is inserted into the electromagnet 5, and correspondingly, the electromagnet 5 is at least partially sleeved in the receiving cavity 311. Preferably, the axis of the electromagnet 5 is on the same straight line as the axis of the moving iron core 6.

[0072] Optionally, the end of the moving iron core 6 inserted into the positioning cavity 321 is provided with external threads, and the positioning cavity 321 is provided with internal threads matched with the external threads, and the moving iron core 6 is connected with the positioning cavity 321 through thread cooperation.

[0073] In this embodiment, the shell 1 is further provided with a base 7 away from the end cover 11. The base 7 is cylindrical with an outer diameter larger than the outer diameter of the shell 1, and the opening of the shell 1 away from the end cover 11 can be closed by the base 7.

[0074] Two electrode rings 8 are sleeved on the base 7, and an insulating ring is arranged between the two electrode rings 8. A wire slot 71 is formed in the base 7 for the wire to pass through, and the two electrode rings 8 are connected to the electromagnet 5 through the wire. Alternatively, the two electrode rings 8 are two copper conductive rings, which can be used as positive and negative electrodes respectively.

[0075] In this embodiment, the electrode ring 8 and the base 7 also need to be insulated. Alternatively, an insulating layer can be arranged between the electrode ring 8 and the base 7.

[0076] As shown in Figure 7 Further, the electrically driven tensioning shaft further comprises a base 9, and a mounting hole is formed in the middle of the base 9, and a bearing 91 is arranged in the mounting hole.

[0077] An extension shaft 72 is arranged on the end face of the base 7 away from the end cover 11, and the extension shaft 72 is mounted in the mounting hole through the bearing 91. In this embodiment, the outer diameter of the extension shaft 72 is smaller than the outer diameter of the shell 1.

[0078] Alternatively, the end face of the base 9 towards the base 7 is provided with a limiting table 92, and the height of the limiting table 92 along the axial direction of the shell 1 is greater than the height of the base 7. The limiting table 92 is provided with a limiting hole for the telescopic electrode 81 to pass through, and the axis of the limiting hole is perpendicular to the axis of the shell 1. The telescopic electrode 81 is provided with two corresponding limiting holes.

[0079] When the telescopic electrode 81 passes through the limiting hole and contacts the electrode ring 8, the electromagnet 5 is energized, so that the moving iron core 6 moves away from the electromagnet 5 under the repulsive force, and pushes the conical pushing mechanism 3 to move towards the end cover 11.

[0080] Alternatively, the telescopic electrode 81 is an electrode welded on the telescopic end of a micro pneumatic cylinder or other mini telescopic mechanism, and is connected with a direct current power supply.

[0081] The method for using the electrically driven tensioning shaft of the embodiment comprises a mounting cylinder core step and a reset locking. The cylinder core is sleeved on the shell 1.

[0082] The mounting cylinder core step comprises:

[0083] The driving assembly is energized, so that the driving assembly drives the conical pushing mechanism 3 to move towards the end cover 11, so that the tensioning assembly 2 moves radially inwardly and does not protrude out of the shell 1. At this time, the cylinder core is sleeved on the shell 1.

[0084] The telescopic electrode 81 is controlled to contact the electrode ring 8 to energize the electromagnet. At this time, the repulsive force of the electromagnet 5 on the moving iron core 6 is greater than the elastic force of the elastic reset mechanism 4, so as to realize the contraction of the plurality of tensioning assemblies 2.

[0085] The reset locking comprises:

[0086] When the driving assembly is powered off, the elastic reset mechanism 4 pushes the conical pushing mechanism 3 to reset, so that the tensioning assembly 2 moves radially outward and partially extends out of the shell 1 to tighten the barrel core. In this embodiment, the elastic reset mechanism 4 is a compression spring.

[0087] Wherein, after the telescopic electrode 81 is controlled to retract and be out of contact with the electrode ring 8, the electromagnet 5 is powered off, the conical pushing mechanism 3 is reset to drive the plurality of tensioning assemblies 2 to tighten outward.

[0088] The use method of this embodiment is suitable for the above-mentioned electrically driven tensioning shafts. Without changing the outer shape and size of the tensioning shaft and the installation form, and without hindering the rotation of the tensioning shaft, the electrically driven tensioning action of the tensioning shaft can be realized. The tensioning effect is good, and the work efficiency is high.

[0089] In the description of this application, it should be noted that the terms "upper", "lower", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0090] It should be noted that in this application, relational terms such as "first" and "second" and the like are only used 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 the entities or operations. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including 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 device. 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 device including the element.

[0091] The foregoing detailed description of the application has been presented for purposes of illustration and description. Various modifications and changes can be made to these embodiments without departing from the spirit and scope of the application. It is intended that the scope of the application should not be limited by the particular representative embodiments described above.

Claims

1. An electrically driven tensioning shaft, characterized in that, It includes: The outer shell includes a hollow shell (1) with openings at both ends and an end cap (11) that is fastened to one end. The sidewall of the shell (1) is provided with a plurality of receiving holes (12) that communicate with the interior of the shell (1) along the circumferential direction. Tensioning components (2) are provided in multiples, each tensioning component (2) being at least partially inserted into a receiving hole (12) and at least partially located within the housing (1); The cone-push mechanism (3) includes a cylindrical cone-push body (31), which is slidably fitted inside the housing (1). The outer side wall of the cone-push body (31) is provided with a sliding groove corresponding to the tensioning assembly (2), and the bottom surface of the sliding groove is a first inclined surface. The end face of the tensioning assembly (2) facing the axis of the housing at least partially abuts against the first inclined surface. A drive assembly, disposed within the housing (1), is configured to drive the cone pusher body (31) toward the end cap (11) when energized, so that the tensioning assembly (2) moves radially inward without extending out of the housing (1); The elastic reset mechanism (4) is configured to push the cone push body (31) to reset when power is off, so that the tensioning assembly (2) moves radially outward and partially extends out of the housing (1); The cone push body (31) has an extension (32) on the end face of the shallow end of the slide groove. The elastic reset mechanism (4) is sleeved on the extension (32), and one end of the elastic reset mechanism (4) abuts against the end face of the cone push body (31), and the other end abuts against the end cap (11). The cone-shaped push body (31) has a receiving cavity (311), and the extension (32) has a positioning cavity (321) communicating with the receiving cavity (311); the drive assembly includes: Electromagnet (5), wherein the electromagnet (5) is a coil electromagnet (5), and the cross-sectional dimension of the electromagnet (5) is smaller than the cross-sectional dimension of the accommodating cavity (311); The moving iron core (6) is assembled in the accommodating cavity (311) and the positioning cavity (321). When the electromagnet (5) is not energized, at least part of the moving iron core (6) in the accommodating cavity (311) is inserted into the electromagnet (5), and at least part of the electromagnet (5) is sleeved in the accommodating cavity (311). The housing (1) has a base (7) with an outer diameter larger than that of the housing (1) at one end away from the end cap (11). Two electrode rings (8) are fitted on the base (7), and an insulating ring is provided between the two electrode rings (8). A wiring groove (71) for wires to pass through is provided on the base (7). The two electrode rings (8) are respectively connected to the electromagnet (5) through wires. An insulating layer is provided between the electrode ring (8) and the base (7).

2. The electrically driven tensioning shaft as described in claim 1, characterized in that: The tensioning assembly (2) includes a limiting part (21) and two tensioning claws (22) extending outward along the same end face of the limiting part (21). Each receiving hole (12) includes two through holes spaced apart, and each tensioning claw (22) is movably inserted into one through hole. A limiting groove (23) is formed between the two tensioning claws (22). An elastic element (24) is provided in the limiting groove (23). One end of the elastic element (24) abuts against the bottom wall of the limiting groove (23), and the other end abuts against the inner side wall of the housing (1).

3. The electrically driven tensioning shaft as described in claim 1, characterized in that: The end face of the tensioning component (2) facing the axis of the housing (1) is a second inclined surface that abuts against the first inclined surface.

4. The electrically driven tensioning shaft as described in claim 1, characterized in that: The moving iron core (6) is inserted into the end of the positioning cavity (321) and has an external thread. The positioning cavity (321) has an internal thread that matches the external thread.

5. The electrically driven tensioning shaft as described in claim 1, characterized in that: The electrically driven tensioning shaft also includes a base (9), and the base (9) has a mounting hole in the middle; The base (7) has an extension shaft (72) on its end face away from the end cover (11), and the extension shaft (72) is installed in the mounting hole by a bearing (91).

6. The electrically driven tensioning shaft as described in claim 5, characterized in that: The end face of the base (9) facing the base (7) is also provided with a limiting platform (92), and the limiting platform (92) is provided with a limiting hole for the telescopic electrode (81) to pass through; When the telescopic electrode (81) passes through the limiting hole and contacts the electrode ring (8), the electromagnet (5) is energized, causing the moving iron core (6) to push the cone push mechanism (3) towards the end cover (11) under the action of repulsion.

7. A method of using the electrically driven tensioning shaft as described in any one of claims 1-6, characterized in that, It includes the steps of installing the core and resetting and locking; the core is sleeved on the housing (1); The steps for installing the core include: Powering on the drive assembly causes the drive assembly to drive the cone push mechanism (3) to move toward the end cover (11), so that the tensioning assembly (2) moves radially inward without extending out of the housing (1), and the core is fitted onto the housing (1). The reset lock includes: After the drive assembly is de-energized, the elastic reset mechanism (4) pushes the cone push mechanism (3) to reset, so that the tensioning assembly (2) moves radially outward and partially extends out of the housing (1) to tighten the cylinder core.

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