Multi-size cable drum tensioning and clamping mechanism

Abstract

The utility model relates to a multi-size cable drum tensioning and clamping mechanism which comprises a main shaft, a drum can be arranged on the main shaft in a sleeving mode, the main shaft is provided with an avoiding channel, the multi-size cable drum tensioning and clamping mechanism further comprises a clamping device, the clamping device comprises a sliding part and a tensioning structure, and the sliding part is arranged on the main shaft in a sleeving mode and is in sliding connection with the main shaft; the tensioning structure is clamped with the sliding part, the tensioning structure penetrates through the avoiding channel, the tensioning structure and the main shaft are movably connected at the inner wall of the avoiding channel, and the sliding part can drive the tensioning structure to move towards or away from the main shaft; when the sliding part drives the tensioning structure to move towards the main shaft, the tensioning structure is opened to tension the bobbin on the main shaft; when the sliding piece drives the tensioning structure to move in the direction away from the main shaft, the tensioning structure shrinks so that the bobbin can be conveniently taken down from the main shaft. Through sliding motion of the sliding piece, the tensioning structure can be driven to stretch or retract, so that the cable drum tensioning device adapts to cable drums of different sizes.

Description

Technical Field

[0001] The present application relates to the technical field of cable bobbin tensioning and clamping, and in particular to a multi-size cable bobbin tensioning and clamping mechanism. Background Art

[0002] The primary function of a cable drum clamping mechanism is to secure the cable drum during cable winding and payout operations, ensuring stability whether rotating or stationary. Furthermore, the clamping mechanism must apply appropriate tension to prevent the cable from becoming loose or overtightened, thereby ensuring cable winding quality. However, existing clamping mechanisms are mostly designed for cable drums of specific sizes and lack the flexibility to adjust to different sizes.

[0003] Currently, traditional cable reel tensioning and clamping mechanisms have significant drawbacks, particularly their inability to effectively adapt to different cable reel sizes. Most clamping mechanisms only secure a single size of cable reel, forcing operators to manually adjust the equipment or use additional clamping tools when switching between sizes. This not only increases workload and operational difficulty, but also reduces production efficiency.

[0004] Therefore, it is necessary to propose a multi-size cable drum tensioning and clamping mechanism that can adapt to cable drums of different sizes, provide reliable clamping and tensioning functions, and avoid frequent equipment adjustments and operational complexity. Utility Model Content

[0005] The purpose of this application is to overcome the deficiencies in the prior art and to propose a multi-size cable bobbin tensioning and clamping mechanism, aiming to solve the problem that the existing clamping mechanism can only fix a cable bobbin of one specification.

[0006] This application is achieved through the following technical solutions:

[0007] The present application proposes a multi-size cable bobbin tensioning and clamping mechanism, comprising a main shaft, on which a bobbin can be sleeved, the main shaft being provided with an escape channel, the multi-size cable bobbin tensioning and clamping mechanism further comprising a clamping device, the clamping device comprising:

[0008] A sliding member is sleeved on the main shaft and is slidably connected to the main shaft;

[0009] a tensioning structure, engaged with the sliding member, the tensioning structure passing through the avoidance channel, and the tensioning structure being movably connected to the main shaft at the inner wall of the avoidance channel, the sliding member being capable of driving the tensioning structure to move toward or away from the main shaft;

[0010] When the sliding member drives the tensioning structure to move toward the main shaft, the tensioning structure opens to tension the bobbin on the main shaft;

[0011] When the slide member drives the tensioning structure to move away from the main shaft, the tensioning structure contracts to facilitate the removal of the bobbin from the main shaft.

[0012] In one embodiment of the present application, the main shaft is provided with a first positioning column on the inner wall of the avoidance channel, and the tensioning structure includes:

[0013] A plurality of connecting rods, each of the connecting rods being provided with a second positioning column;

[0014] a plurality of tensioning members, the number of which corresponds to the number of the plurality of connecting rods, each of the tensioning members being provided with a plurality of first positioning holes and straight slots, the first positioning holes and the straight slots being corresponding to the number of the connecting rods, the straight slots extending toward the first positioning holes;

[0015] Any of the first positioning posts extends into the first positioning hole, so that the corresponding tensioning member can rotate along the circumference of the first positioning post;

[0016] Any of the second positioning posts extends into the straight slot, and the second positioning post can move along the extension direction of the straight slot to movably connect the connecting rod with the tensioning member;

[0017] When the sliding member drives the plurality of connecting rods to move toward the main shaft, the plurality of tensioning members are simultaneously opened to tension the bobbin on the main shaft;

[0018] When the sliding member drives the connecting rods to move away from the main shaft, the tensioning members are contracted to facilitate the removal of the bobbin from the main shaft.

[0019] In one embodiment of the present application, the main shaft is provided with a first conical portion. When the sliding member drives the multiple connecting rods to move toward the main shaft, the multiple tensioning members simultaneously open and form a second conical portion. The first conical portion and the second conical portion simultaneously clamp the bobbin.

[0020] In one embodiment of the present application, when the sliding member drives the plurality of connecting rods to move away from the main shaft, each of the tensioning members is accommodated in the avoidance channel.

[0021] In one embodiment of the present application, the multi-size cable bobbin tensioning and clamping mechanism also includes a fixed frame and a motor, the main shaft is rotatably connected to the fixed frame, the motor is arranged on the fixed frame, the rotating shaft of the motor is fixedly connected to the main shaft, and the motor can drive the main shaft to rotate in the circumferential direction to drive the bobbin on the main shaft to rotate.

[0022] In one embodiment of the present application, the multi-size cable reel tensioning and clamping mechanism further includes a cylinder, which is disposed on the fixed frame. The push rod of the cylinder contacts the sliding member, and the cylinder can drive the sliding member to move toward or away from the main shaft.

[0023] In one embodiment of the present application, the main shaft rotates and drives the sliding member to rotate, the sliding member is provided with an annular disk, the push rod of the cylinder is provided with a slot, and the annular disk extends into the slot;

[0024] When the sliding member rotates or stops, the annular disk always extends into the groove, so that the cylinder drives the sliding member to move toward or away from the main shaft.

[0025] In one embodiment of the present application, each of the connecting rods is provided with a fixing block, the sliding member is provided with a plurality of fixing grooves, the number of the plurality of fixing grooves corresponds to the number of the connecting rods, and each of the fixing blocks is respectively clamped in one of the fixing grooves.

[0026] Compared with the prior art, the present invention has the following advantages:

[0027] The cable spool can be mounted on a spindle with an escape channel. The multi-size cable spool tensioning and clamping mechanism also includes a clamping device, which includes a sliding member and a tensioning structure. The sliding member is mounted on the spindle and slidably connected to the spindle. The tensioning structure engages the sliding member, passes through the escape channel, and is movably connected to the spindle at the inner wall of the escape channel. The sliding member can drive the tensioning structure toward or away from the spindle. When the sliding member moves toward the spindle, the tensioning structure expands, applying tension to the cable spool. When the sliding member moves away from the spindle, the tensioning structure contracts, facilitating the removal or replacement of the cable spool. This allows the mechanism to be quickly and conveniently adjusted to accommodate cable spools of varying sizes, while providing reliable clamping and tensioning functions.

[0028] Other features and advantages of the present application will be described in the following description, and in part will become apparent from the description, or will be understood by practicing the present application. The purpose and other advantages of the present application can be realized and obtained by the structures indicated in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0030] Figure 1 A three-dimensional diagram of a tensioning and clamping mechanism for multi-sized cable drums (including drums) provided in one embodiment of the present application;

[0031] Figure 2 A three-dimensional diagram of a tensioning and clamping mechanism for multi-sized cable drums provided in one embodiment of the present application (excluding the drum);

[0032] Figure 3 for Figure 1 Cross-sectional view (including the bobbin);

[0033] Figure 4 for Figure 2 Cross-sectional view of the spool (without the bobbin).

[0034] Description of reference numerals:

[0035] 10. Tensioning and clamping mechanism for multi-size cable reels; 100. Reel; 200. Main shaft; 210. Avoidance channel; 220. First positioning post; 230. First tapered portion; 310. Sliding member; 311. Annular disk; 320. Tensioning structure; 321. Connecting rod; 3211. Second positioning post; 3212. Fixed block; 322. Tensioning member; 3221. Straight slot; 400. Fixed bracket; 500. Motor; 600. Cylinder. DETAILED DESCRIPTION

[0036] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0037] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0038] It should be noted that when an element is referred to as being “fixed on” or “set on” another component, it can be directly on the other component or indirectly set on the other component; when a component is referred to as being “connected to” another component, it can be directly connected to the other component or indirectly connected to the other component.

[0039] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" or "several" means two or more, unless otherwise specifically defined.

[0041] It should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the conditions under which this application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in this application without affecting the efficacy and purpose that can be achieved by this application.

[0042] Please refer to Figures 1 to 4 The present application proposes a multi-size cable drum tensioning and clamping mechanism 10, including a main shaft 200, on which the bobbin 100 can be sleeved. The main shaft 200 is provided with an avoidance channel 210. The multi-size cable drum tensioning and clamping mechanism 10 also includes a clamping device (not marked in the figure), which includes a sliding member 310 and a tensioning structure 320. The sliding member 310 is sleeved on the main shaft 200 and is slidably connected to the main shaft 200; the tensioning structure 320 is engaged with the sliding member 310, and the tensioning structure 320 passes through the avoidance channel 210. The tensioning structure 320 and the main shaft 200 are movably connected at the inner wall of the avoidance channel 210. The sliding member 310 can drive the tensioning structure 320 to move toward or away from the main shaft 200.

[0043] When the sliding member 310 drives the tensioning structure 320 to move toward the main shaft 200 , the tensioning structure 320 opens to tension the bobbin 100 on the main shaft 200 ;

[0044] When the slider 310 drives the tensioning structure 320 to move away from the main shaft 200 , the tensioning structure 320 contracts, so as to facilitate the removal of the bobbin 100 from the main shaft 200 .

[0045] Specifically, the cable reel 100 can be mounted on the main shaft 200 and stably clamped by the main shaft 200, whether rotating or stationary. The main shaft 200 is provided with an escape channel 210 to accommodate and mount a tensioning structure 320, enabling flexible movement. The clamping device includes a slider 310 and a tensioning structure 320. The slider 310 is slidably connected to the main shaft 200, allowing it to move axially along the main shaft 200, thereby driving the tensioning structure 320 to expand or contract. The slider 310 is mounted on the main shaft 200 and can slide along the main shaft 200. The tensioning structure 320 engages with the slider 310, passes through the escape channel 210 on the main shaft 200, and is movably connected to the inner wall of the main shaft 200. Driven by the slider 310, the tensioning structure 320 can move toward or away from the main shaft 200 to tighten or loosen the cable reel 100. When the slider 310 moves toward the spindle 200, the tensioning structure 320 expands, applying tension to the bobbin 100. When the slider 310 moves away from the spindle 200, the tensioning structure 320 contracts, facilitating the removal or replacement of the bobbin 100. This allows the mechanism to be quickly and conveniently adjusted to accommodate cable bobbins 100 of varying specifications, while providing reliable clamping and tensioning functions.

[0046] The first and second locating holes 321 are connected to the cam 322 via a plurality of latches 326, 327 and 328. The first and second locating holes 321 are connected to the cam 322 via a plurality of latches 326. The first and second locating holes 321 are connected to the cam 322 via a plurality of latches 326.

[0047] When the sliding member 310 drives the multiple connecting rods 321 to move toward the main shaft 200, the multiple tensioning members 322 are simultaneously opened to tighten the bobbin 100 on the main shaft 200;

[0048] When the sliding member 310 drives the connecting rods 321 to move away from the main shaft 200 , the tensioning members 322 contract, so that the bobbin 100 can be removed from the main shaft 200 .

[0049] Specifically, the first positioning post 220 is located on the inner wall of the avoidance channel 210 of the main shaft 200. It supports and guides the tensioning member 322, restricting its motion trajectory and enabling circumferential rotation along the first positioning post 220. Each connecting rod 321 is equipped with a second positioning post 3211, which is movably connected to the straight slot 3221 of the tensioning member 322. Driven by the sliding member 310, the connecting rod 321 achieves radial telescopic movement, driving the tensioning member 322 to expand or contract. The number of tensioning members 322 corresponds to the number of connecting rods 321. Each tensioning member 322 is equipped with a plurality of first positioning holes and straight slots 3221. The first positioning holes cooperate with the first positioning post 220, enabling the tensioning member 322 to rotate around the first positioning post 220. The straight slots 3221 cooperate with the second positioning posts 3211, allowing the tensioning member 322 to move radially under the drive of the sliding member 310.

[0050] Specifically, when the slider 310 slides axially along the spindle 200, the connecting rod 321 cooperates with the slider 310 to drive the tensioning member 322 to expand or contract radially along the spindle 200, i.e., to rotate circumferentially along the first positioning post 220, thereby accommodating cable reels 100 of different sizes. This avoids the problem of manually adjusting the equipment or replacing the clamping tool due to different sizes of the reel 100 in the prior art.

[0051] In one embodiment, the main shaft 200 is provided with a first conical portion 230. When the sliding member 310 drives the multiple connecting rods 321 to move toward the main shaft 200, the multiple tensioning members 322 are simultaneously opened to form a second conical portion. The first conical portion 230 and the second conical portion simultaneously clamp the bobbin 100.

[0052] Specifically, the first tapered portion 230 is disposed on the main shaft 200 and exhibits a conical structure. The first tapered portion 230 not only provides positioning and support for the tensioning structure 320 but also, through cooperation with the second tapered portion, enhances clamping reliability. The second tapered portion is a tapered structure formed when multiple tensioning members 322 are simultaneously opened. The tensioning members 322 are opened by the connecting rod 321, forming a conical shape that matches the first tapered portion 230, ensuring a secure clamping effect on the bobbin 100. At this point, the force applied to the tensioning members 322 is more even, allowing the bobbin 100 to remain stable under the clamping action of the tapered portion.

[0053] In one embodiment, when the sliding member 310 drives the plurality of connecting rods 321 to move away from the main shaft 200 , each tensioning member 322 is received in the avoidance channel 210 .

[0054] Specifically, the tensioning member 322 is connected to the connecting rod 321, and the sliding member 310 is connected to the connecting rod 321. Driven by the sliding member 310, the tensioning member 322 expands radially along the main shaft 200 to clamp the cable reel 100, or contracts radially away from the main shaft 200 to release the cable reel 100. As the connecting rod 321 moves away from the main shaft 200, the tensioning member 322 gradually contracts until it fully enters the escape channel 210 on the main shaft 200. The escape channel 210 not only provides a space for accommodating the tensioning member 322 but also helps reduce the overall size of the device within the overall structural design, preventing the tensioning member 322 from being exposed when not in operation and causing unnecessary interference or wear. The movement of the sliding member 310 drives the displacement of the connecting rod 321 and the tensioning member 322. When the sliding member 310 drives the connecting rod 321 to move away from the main shaft 200 , the tensioning member 322 will gradually shrink and enter the avoidance channel 210 until it is completely accommodated in the main shaft 200 .

[0055] In one embodiment, the multi-size cable bobbin tensioning and clamping mechanism 10 further includes a fixing frame 400 and a motor 500. The main shaft 200 is rotatably connected to the fixing frame 400. The motor 500 is disposed on the fixing frame 400. The rotating shaft of the motor 500 is fixedly connected to the main shaft 200. The motor 500 can drive the main shaft 200 to rotate circumferentially, thereby driving the bobbin 100 on the main shaft 200 to rotate.

[0056] Specifically, the fixing frame 400 is used to support the entire main shaft 200 and provide a fixed installation position for the main shaft 200 and the motor 500. The main shaft 200 is mounted on the fixing frame 400 via bearings or other rotating connectors to ensure that the main shaft 200 can rotate stably along its axis. The motor 500 is mounted on the fixing frame 400, and the output shaft of the motor 500 is fixedly connected to the main shaft 200. The motor 500 drives the rotation of the cable reel 100 by driving the main shaft 200 to rotate. The motor 500 can provide continuous power support during the winding or unwinding process, allowing the cable reel 100 to complete the winding or unwinding work stably and efficiently.

[0057] In one embodiment, the multi-size cable reel tensioning and clamping mechanism 10 further includes a cylinder 600 , which is disposed on the fixing frame 400 . The push rod of the cylinder 600 contacts the sliding member 310 , and the cylinder 600 can drive the sliding member 310 to move toward or away from the main shaft 200 .

[0058] Specifically, the cylinder 600 is mounted on the fixed frame 400, and the push rod of the cylinder 600 is in direct contact with the slider 310. The function of the cylinder 600 is to drive the push rod's telescopic movement through changes in its internal air pressure, thereby driving the slider 310 to move along the main shaft 200. Through the connection with the push rod of the cylinder 600, the slider 310 can be precisely moved toward or away from the main shaft 200 under the action of the cylinder 600, driving the tensioner 322 to expand or contract. The slider 310 is slidably connected to the main shaft 200 to ensure its smooth movement. The fixed frame 400 serves as a support structure, not only supporting the main shaft 200 and motor 500, but also providing a fixed mounting point for the cylinder 600. The push rod of the cylinder 600 is connected to the slider 310, allowing the slider 310 to move automatically under the control of the cylinder 600.

[0059] In one embodiment, the main shaft 200 rotates and drives the sliding member 310 to rotate. The sliding member 310 is provided with an annular disk 311. The push rod of the cylinder 600 is provided with a slot, and the annular disk 311 extends into the slot.

[0060] The sliding member 310 rotates or stops, and the annular disk 311 always extends into the slot, so that the cylinder 600 drives the sliding member 310 to move toward or away from the main shaft 200.

[0061] Specifically, the main shaft 200 rotates under the drive of the motor 500, and at the same time drives the cable reel 100 to perform winding or unwinding operations. The rotation of the main shaft 200 also drives the sliding member 310 connected thereto to rotate. The sliding member 310 is connected to the main shaft 200, and therefore rotates synchronously with the rotation of the main shaft 200. An annular disk 311 is provided on the structure of the sliding member 310 for linkage with the push rod of the cylinder 600. The annular disk 311 has an annular structure, and a card slot is provided on the push rod of the cylinder 600, which cooperates with the annular disk 311 on the sliding member 310. Regardless of whether the sliding member 310 is in a rotating or stopped state, the annular disk 311 always remains connected to the card slot, so that the cylinder 600 can smoothly drive the sliding member 310 to move toward or away from the main shaft 200.

[0062] In one embodiment, each connecting rod 321 is provided with a fixing block 3212, and the sliding member 310 is provided with a plurality of fixing grooves (not marked in the figure), the number of the plurality of fixing grooves corresponds to the number of connecting rods 321, and each fixing block 3212 is respectively clamped in a fixing groove.

[0063] Specifically, each connecting rod 321 is provided with a fixing block 3212. This fixing block 3212 is designed to engage with a fixing slot on the slider 310, ensuring reliable movement of the connecting rod 321 when driven by the slider 310. The slider 310 is provided with a number of fixing slots corresponding to the number of connecting rods 321, each of which is designed to accommodate a fixing block 3212 on a connecting rod 321. When the fixing block 3212 is inserted into a fixing slot on the slider 310, the slider 310 can drive all connecting rods 321 to move together, achieving synchronized expansion or contraction of the tensioning member 322.

[0064] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-size cable bobbin tensioning and clamping mechanism, comprising a main shaft, on which the bobbin can be sleeved, characterized in that: The main shaft is provided with an avoidance channel, and the multi-size cable drum tensioning and clamping mechanism further includes a clamping device, which includes: A sliding member is sleeved on the main shaft and is slidably connected to the main shaft; a tensioning structure, engaged with the sliding member, the tensioning structure passing through the avoidance channel, and the tensioning structure being movably connected to the main shaft at the inner wall of the avoidance channel, the sliding member being capable of driving the tensioning structure to move toward or away from the main shaft; When the sliding member drives the tensioning structure to move toward the main shaft, the tensioning structure opens to tension the bobbin on the main shaft; When the slide member drives the tensioning structure to move away from the main shaft, the tensioning structure contracts to facilitate the removal of the bobbin from the main shaft.

2. The multi-size cable drum tensioning and clamping mechanism according to claim 1, characterized in that: The main shaft is provided with a first positioning column on the inner wall of the avoidance channel, and the tensioning structure includes: A plurality of connecting rods, each of the connecting rods being provided with a second positioning column; a plurality of tensioning members, the number of which corresponds to the number of the plurality of connecting rods, each of the tensioning members being provided with a plurality of first positioning holes and straight slots, the first positioning holes and the straight slots being corresponding to the number of the connecting rods, the straight slots extending toward the first positioning holes; Any of the first positioning posts extends into the first positioning hole, so that the corresponding tensioning member can rotate along the circumference of the first positioning post; Any of the second positioning posts extends into the straight slot, and the second positioning post can move along the extension direction of the straight slot to movably connect the connecting rod with the tensioning member; When the sliding member drives the plurality of connecting rods to move toward the main shaft, the plurality of tensioning members are simultaneously opened to tension the bobbin on the main shaft; When the sliding member drives the connecting rods to move away from the main shaft, the tensioning members are contracted to facilitate the removal of the bobbin from the main shaft.

3. The multi-size cable drum tensioning and clamping mechanism according to claim 2, characterized in that: The main shaft is provided with a first tapered portion. When the sliding member drives the plurality of connecting rods to move toward the main shaft, the plurality of tensioning members simultaneously open and form a second tapered portion. The first tapered portion and the second tapered portion simultaneously clamp the bobbin.

4. The multi-size cable drum tensioning and clamping mechanism according to claim 2, characterized in that: When the sliding member drives the plurality of connecting rods to move away from the main shaft, each of the tensioning members is accommodated in the avoidance channel.

5. The multi-size cable drum tensioning and clamping mechanism according to claim 2, characterized in that: The multi-size cable bobbin tensioning and clamping mechanism also includes a fixing frame and a motor. The main shaft is rotatably connected to the fixing frame. The motor is arranged on the fixing frame. The rotating shaft of the motor is fixedly connected to the main shaft. The motor can drive the main shaft to rotate in the circumferential direction to drive the bobbin on the main shaft to rotate.

6. The multi-size cable drum tensioning and clamping mechanism according to claim 5, characterized in that: The multi-size cable reel tensioning and clamping mechanism further includes a cylinder, which is disposed on the fixing frame. A push rod of the cylinder contacts the sliding member, and the cylinder can drive the sliding member to move toward or away from the main shaft.

7. The multi-size cable drum tensioning and clamping mechanism according to claim 6, characterized in that: The main shaft rotates and drives the sliding member to rotate. The sliding member is provided with an annular disk. The push rod of the cylinder is provided with a slot, and the annular disk extends into the slot. When the sliding member rotates or stops, the annular disk always extends into the groove, so that the cylinder drives the sliding member to move toward or away from the main shaft.

8. The multi-size cable drum tensioning and clamping mechanism according to claim 2, wherein: Each of the connecting rods is provided with a fixing block, and the sliding member is provided with a plurality of fixing slots, the number of the plurality of fixing slots corresponds to the number of the connecting rods, and each of the fixing blocks is respectively clamped in one of the fixing slots.

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