Quick dismounting and mounting mechanism for strapping tape reel

Abstract

The utility model provides a quick disassembly and assembly mechanism for a strapping tape reel, which belongs to the technical field of strapping tape reel installation and comprises a rotating shaft, a fixed disc, a movable disc, a positioning sleeve, a puller pin and a locking component. According to the utility model, the positioning sleeve is arranged on one side of the movable disc, and the positioning sleeve is detachably connected with the rotating shaft through the puller pin. When the strapping tape is replaced, the contact state between the jacking pin and the rotating shaft can be changed by controlling the locking assembly, when the jacking pin is separated from the rotating shaft, the movable disc can be disassembled and assembled, and then the strapping tape is replaced. After the strapping tape is replaced, the movable disc and the positioning sleeve are installed on the rotating shaft, and the jacking pin is jacked on the rotating shaft, the positioning sleeve abuts against the movable disc for limiting, operation is convenient and fast, compared with a bolt fixing mode, the bolt does not need to be repeatedly rotated, and the efficiency in the strapping tape replacing process is improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of cable tie reel installation, specifically relating to a quick assembly and disassembly mechanism for cable tie reels. Background Technology

[0002] In automatic banknote bundling machines, the bundling tape reel (referred to as "tape reel") is a core consumable. The tape reel is usually mounted on a rotating shaft inside the machine, and the strapping tape is released by rotating the shaft. Therefore, the connection method between the tape reel and the mounting shaft directly determines the replacement efficiency, operational reliability, and ease of operation.

[0003] Currently, the common method for fixing the pulley to the rotating shaft is threaded locking. Typically, a tightening bolt is threaded to the end of the pulley. By rotating the tightening bolt, the end of the bolt rests against the outer surface of the rotating shaft, thus fixing the pulley to the shaft. However, this method is cumbersome and time-consuming, requiring numerous rotations to tighten and loosen the nuts, resulting in low efficiency. Utility Model Content

[0004] This utility model provides a quick assembly and disassembly mechanism for cable ties reels, which aims to solve the problem of low efficiency in the installation of cable ties reels in the prior art during replacement or installation.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a quick assembly and disassembly mechanism for cable ties reels, comprising:

[0006] A rotating shaft, on which a fixed disk is fixedly mounted;

[0007] A movable disc is fitted onto the outside of the rotating shaft and is slidably disposed on the rotating shaft along the axis of the rotating shaft. The movable disc and the fixed disc form an installation gap for placing the strapping.

[0008] The positioning sleeve is slidably disposed on the rotating shaft and located on the side of the movable disk away from the fixed disk;

[0009] A top-tightening pin is slidably disposed on the positioning sleeve, and one end of the top-tightening pin can pass through the positioning sleeve and abut against the rotating shaft;

[0010] A locking assembly is disposed between the positioning sleeve and the top clamping pin, for pushing the top clamping pin against the rotating shaft.

[0011] In one possible implementation, the locking component includes:

[0012] A drive sleeve is rotatably disposed on the outside of the positioning sleeve. An arc-shaped groove is provided on the side wall of the drive sleeve. The distance between the center line of the arc-shaped groove and the axis of the positioning sleeve is set to increase or decrease along the circumference of the positioning sleeve.

[0013] The guide rod is fixedly installed on the top clamping pin and slidably disposed inside the arc-shaped groove.

[0014] In one possible implementation, the arcuate groove is further connected to a transition section, the centerline of the transition section being coaxial with the positioning sleeve, and the distance between the centerline of the transition section and the axis of the positioning sleeve is not greater than the minimum distance between the centerline of the arcuate groove and the axis of the positioning sleeve.

[0015] In one possible implementation, the middle part of the transition section or the end away from the arcuate groove is recessed with a limiting groove for engaging the guide rod.

[0016] In one possible implementation, the clamping pin includes:

[0017] The sleeve is slidably mounted on the positioning sleeve;

[0018] A pressure block is slidably disposed at one end of the sleeve near the rotating shaft along the axial direction of the sleeve. The pressure block is used to press against the rotating shaft and form a friction pair with the rotating shaft.

[0019] An elastic element is installed between the sleeve and the pressure block to push the pressure block against the rotating shaft.

[0020] In one possible implementation, a sliding rod is fixedly mounted on the pressure block, the sliding rod protruding from the outer side of the pressure block, and an elongated hole for mounting the sliding rod is provided on the side wall of the sleeve.

[0021] In one possible implementation, the positioning sleeve is equipped with a plurality of sets of clamping pins, which are evenly spaced along the circumference of the positioning sleeve.

[0022] In one possible implementation, an anti-rotation key is provided between the positioning sleeve and the rotating shaft to prevent the positioning sleeve from rotating circumferentially along the rotating shaft.

[0023] In one possible implementation, guide discs for guiding the strapping are fixedly installed on opposite sides of both the fixed disc and the movable disc.

[0024] The solution shown in this application, compared with the prior art, incorporates a rotating shaft—a unwinding shaft on an automatic strapping machine used for mounting strapping tape—and a fixed disc fixedly mounted on the rotating shaft. A movable disc is also slidably mounted on the rotating shaft, with a positioning sleeve on the side of the movable disc away from the fixed disc. The positioning sleeve limits the movable disc to the rotating shaft. The positioning sleeve is slidably mounted on the rotating shaft along its axial direction, and a tightening pin is slidably mounted on the positioning sleeve. Preferably, the tightening pin is slidably mounted on the positioning sleeve radially, and one end of the tightening pin can abut against the rotating shaft to form a friction pair, thereby fixing the positioning sleeve to the rotating shaft. When replacing the strapping tape, the contact state between the tightening pin and the rotating shaft can be changed by controlling the locking assembly. When the tightening pin disengages from the rotating shaft, the movable disc can be disassembled and installed, and then the strapping tape can be replaced. After the strapping is replaced, install the movable disc and positioning sleeve onto the rotating shaft. When the top pin is tightened on the rotating shaft, the positioning sleeve abuts against the movable disc to limit the strapping, thus limiting the strapping between the fixed disc and the movable disc. The operation is convenient and easy. Compared with the bolt fixing method, there is no need to repeatedly rotate the bolt, which improves the efficiency in the process of replacing strapping. Attached Figure Description

[0025] Figure 1 A schematic diagram of the structure of the quick assembly and disassembly mechanism for the strapping reel provided in this embodiment of the utility model;

[0026] Figure 2 A schematic diagram of the installation structure of the clamping pin provided for an embodiment of this utility model;

[0027] Figure 3 An exploded view of the locking assembly provided in an embodiment of this utility model;

[0028] Figure 4 A schematic diagram of the structure of the clamping pin provided in an embodiment of this utility model;

[0029] Figure 5 This is a schematic diagram of the installation structure of the guide plate provided in an embodiment of the present utility model.

[0030] Explanation of reference numerals in the attached figures:

[0031] 1. Rotating shaft; 11. Anti-rotation key; 2. Fixed plate; 21. Guide plate; 3. Movable plate; 4. Positioning sleeve; 5. Tightening pin; 51. Sleeve; 52. Pressure block; 521. Sliding rod; 53. Elastic element; 6. Locking assembly; 61. Drive sleeve; 611. Arc groove; 612. Transition section; 613. Limiting groove; 62. Guide rod. Detailed Implementation

[0032] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0033] Please refer to the following: Figures 1 to 5 The quick-release mechanism for cable ties reels provided by this utility model is described below. The quick-release mechanism for cable ties reels includes a rotating shaft 1, a fixed disc 2, a movable disc 3, a positioning sleeve 4, a tightening pin 5, and a locking assembly 6. The fixed disc 2 is fixedly mounted on the rotating shaft 1; the movable disc 3 is fitted onto the outside of the rotating shaft 1 and slidably disposed on the rotating shaft 1 along its axis, forming an installation gap between the movable disc 3 and the fixed disc 2 for placing the cable ties; the positioning sleeve 4 is slidably disposed on the rotating shaft 1 and located on the side of the movable disc 3 away from the fixed disc 2; the tightening pin 5 is slidably disposed on the positioning sleeve 4, one end of which can penetrate the positioning sleeve 4 and abut against the rotating shaft 1; the locking assembly 6 is disposed between the positioning sleeve 4 and the tightening pin 5, and is used to push the tightening pin 5 against the rotating shaft 1.

[0034] The quick-release mechanism for strapping reels provided in this embodiment, compared with the prior art, features a rotating shaft 1, which is the unwinding shaft for installing strapping on an automatic strapping machine. A fixed disc 2 is fixedly mounted on the rotating shaft 1. A movable disc 3 is also slidably mounted on the rotating shaft 1, and a positioning sleeve 4 is provided on the side of the movable disc 3 away from the fixed disc 2. The positioning sleeve 4 is used to limit the movable disc 3 on the rotating shaft 1. The positioning sleeve 4 is slidably mounted on the rotating shaft 1 along the axial direction, and a tightening pin 5 is slidably mounted on the positioning sleeve 4. Preferably, the tightening pin 5 is slidably mounted on the positioning sleeve 4 radially, and one end of the tightening pin 5 can abut against the rotating shaft 1 to form a friction pair with the rotating shaft 1, thereby fixing the positioning sleeve 4 to the rotating shaft 1. In this application, when replacing the strapping tape, the contact state between the locking component 6 and the rotating shaft 1 can be changed by controlling the locking component 6. When the locking pin 5 disengages from the rotating shaft 1, the positioning sleeve 4 and the movable disc 3 can be disassembled and installed, and then the strapping tape can be replaced. After the strapping tape is replaced, after installing the movable disc 3 and the positioning sleeve 4 onto the rotating shaft 1, when the locking pin 5 is pressed against the rotating shaft 1, the positioning sleeve 4 abuts against the movable disc 3 for limiting, thereby limiting the strapping tape between the fixed disc 2 and the movable disc 3. The operation is convenient and easy. Compared with the bolt fixing method, it does not require repeated rotation of the bolt, thus improving the efficiency in the strapping tape replacement process.

[0035] Preferably, in this embodiment, the positioning sleeve 4 is fixedly installed on the movable disk 3 or is a separate structure from the movable disk 3. When the positioning sleeve 4 and the movable disk 3 are separate structures, the end of the positioning sleeve 4 is used to abut against the end of the movable disk 3 to limit the movable disk 3 on the rotating shaft 1.

[0036] In some embodiments, the locking component 6 described above may employ, for example... Figure 2 , Figure 3 The structure shown. See also... Figure 2 , Figure 3 The locking assembly 6 includes a drive sleeve 61 and a guide rod 62. The drive sleeve 61 is rotatably disposed on the outside of the positioning sleeve 4. An arc-shaped groove 611 is provided on the side wall of the drive sleeve 61. The distance between the center line of the arc-shaped groove 611 and the axis of the positioning sleeve 4 increases or decreases along the circumference of the positioning sleeve 4. The guide rod 62 is fixedly mounted on the top-tightening pin 5 and slidably disposed inside the arc-shaped groove 611. The drive sleeve 61 is rotatably disposed on the outside of the positioning sleeve 4. An annular groove for guiding the top-tightening pin 5 is recessed in the inner ring of the drive sleeve 61. The top-tightening pin 5 is slidably disposed inside the annular groove and is used to position the drive sleeve 61 and the positioning sleeve 4 along the axis of the positioning sleeve 4. The guide rod 62 is fixedly installed at the position where the top-tightening pin 5 is located inside the annular groove. The guide rod 62 is perpendicular to the top-tightening pin 5 and extends out of the outside of the top-tightening pin 5, so that the end of the guide rod 62 is located inside the arc-shaped groove 611. When the drive sleeve 61 rotates relative to the positioning sleeve 4, the guide rod 62 moves radially along the positioning sleeve 4 guided by the arc-shaped groove 611, thereby driving the clamping pin 5 to move. The clamping pin 5 moves on the positioning sleeve 4 by rotating the drive sleeve 61 relative to the positioning sleeve 4.

[0037] Specifically, in this embodiment, the middle part of the guide rod 62 is fixedly installed on the top clamping pin 5, and the arc-shaped groove 611 is set through the drive sleeve 61 along the axial direction of the drive sleeve 61, so that both ends of the guide rod 62 are located inside the arc-shaped groove 611, which plays a role in effectively guiding the guide rod 62.

[0038] In some embodiments, the drive sleeve 61 may be adopted as follows: Figure 2 , Figure 3 The structure shown. See also... Figure 2 , Figure 3 The arc-shaped groove 611 is also connected to a transition section 612. The centerline of the transition section 612 is coaxial with the positioning sleeve 4, and the distance between the centerline of the transition section 612 and the axis of the positioning sleeve 4 is not greater than the minimum distance between the centerline of the arc-shaped groove 611 and the axis of the positioning sleeve 4. A transition section 612 is connected to one end of the arc-shaped groove 611 near the axis of the positioning sleeve 4, and the centerline of the transition section 612 is coaxial with the positioning sleeve 4.

[0039] Specifically, in this embodiment, during the process of tightening the clamping pin 5 to the outside of the rotating shaft 1, the guide rod 62 preferentially moves inside the arc-shaped groove 611 with the rotation of the drive sleeve 61. Since the clamping pin 5 experiences an outward force when it is tightened onto the rotating shaft 1, and the center line of the arc-shaped groove 611 is not coaxial with the positioning sleeve 4, the guide rod 62 is easily pushed to move in the opposite direction by the rebound force of the clamping pin 5 when the drive sleeve 61 is released, making it impossible for the clamping pin 5 to effectively tighten onto the rotating shaft 1. However, this application connects a transition section 612 to one end of the arc-shaped groove 611 near the axis of the positioning sleeve 4. The center line of the transition section 612 is coaxial with the positioning sleeve 4. After the clamping pin 5 is tightened onto the rotating shaft 1, the drive sleeve 61 continues to rotate so that the guide rod 62 is positioned on the transition section 612. This avoids the guide rod 62 being subjected to radial force that would cause the drive sleeve 61 to reverse, improving the stability of the relative position between the drive sleeve 61 and the positioning sleeve 4 during the tightening process.

[0040] Specifically, in this embodiment, the centerline of the arc-shaped groove 611 is set along the length direction of the arc-shaped groove 611. The centerline of the transition section 612 is set along the length direction of the transition section 612.

[0041] In some embodiments, the drive sleeve 61 may be adopted as follows: Figure 2 , Figure 3 The structure shown. See also... Figure 2 , Figure 3 A limiting groove 613 for mounting the guide rod 62 is recessed in the middle of the transition section 612 or at the end away from the arc-shaped groove 611. The limiting groove 613 is provided on the inner wall of the transition section 612 on the side away from the axis of the drive sleeve 61. When the guide rod 62 moves into the limiting groove 613 inside the transition section 612, it slides into the limiting groove 613 under the action of the spring force of the clamping pin 5. Under the action of the spring force of the clamping pin 5, the guide rod 62 can be stably located inside the limiting groove 613, preventing the guide rod 62 from moving along the length of the transition section 612 inside the transition section 612.

[0042] Specifically, in this embodiment, the clamping pin 5 is used to abut against a component on the working end of the rotating shaft 1, which is made of polyurethane or rubber. On the one hand, it has a certain elastic deformation property, preventing the drive sleeve 61 and the positioning sleeve 4 from seizing together. On the other hand, it can increase the friction between the drive sleeve 61 and the rotating shaft 1, thereby fixing the positioning sleeve 4 on the rotating shaft 1.

[0043] Specifically, in this embodiment, the limiting groove 613 and the transition section 612 are connected by an arc transition. When it is necessary to slide the guide rod 62 out of the limiting groove 613, the operator can increase the rotational force when rotating the drive sleeve 61 to slide the guide rod 62 out of the limiting groove 613, thereby improving the convenience during the disassembly process.

[0044] In some embodiments, the aforementioned clamping pin 5 may be adopted as follows: Figure 4 The structure shown. See also Figure 4 The clamping pin 5 includes a sleeve 51, a pressure block 52, and an elastic element 53. The sleeve 51 is slidably disposed on the positioning sleeve 4; the pressure block 52 is slidably disposed at one end of the sleeve 51 near the rotating shaft 1 along the axial direction of the sleeve 51, and the pressure block 52 is used to press against the rotating shaft 1 to form a friction pair with the rotating shaft 1; the elastic element 53 is installed between the sleeve 51 and the pressure block 52, and is used to push the pressure block 52 to press against the rotating shaft 1. The sleeve 51 is slidably disposed on the positioning sleeve 4 along the radial direction of the positioning sleeve 4, and the guide rod 62 is fixedly installed on the sleeve 51. A mounting hole for installing the pressure block 52 is provided at one end of the sleeve 51 near the axial direction of the driving sleeve 61, the pressure block 52 is slidably disposed inside the mounting hole, and an elastic element 53 for pushing the pressure block 52 to move outward from the mounting hole is also installed inside the mounting hole.

[0045] Specifically, in this embodiment, during use, when the drive sleeve 61 moves relative to the positioning sleeve 4, the guide rod 62, guided by the arc groove 611, drives the sleeve 51 to move closer to the axis of the positioning sleeve 4, allowing the pressure block 52 to abut against the rotating shaft 1. When the drive sleeve 61 continues to rotate, the pressure block 52 slides into the sleeve 51. After the elastic element 53 is compressed, the pushing force applied to the pressure block 52 increases, thereby increasing the friction between the pressure block 52 and the rotating shaft 1, and improving the stability of the positional relationship between the positioning sleeve 4 and the rotating shaft 1.

[0046] Preferably, in this embodiment, the elastic element 53 can also buffer the movement of the guide rod 62 and overcome the error in the relative position of the arc groove 611 on the drive sleeve 61 and the top clamping pin 5.

[0047] Specifically, in this embodiment, the elastic element 53 is a spring, which is inexpensive and easy to procure, thus reducing production costs.

[0048] In some embodiments, the aforementioned pressure block 52 may be as follows: Figure 4 The structure shown. See also Figure 4A sliding rod 521 is fixedly installed on the pressure block 52. The sliding rod 521 protrudes from the outer side of the pressure block 52, and an elongated hole for installing the sliding rod 521 is provided on the side wall of the sleeve 51. The sliding rod 521 is fixedly attached to the pressure block 52, and both ends of the sliding rod 521 are located on the outside of the sleeve 51. An elongated hole is machined on the side wall of the sleeve 51, and the length direction of the elongated hole is along the axis of the sleeve 51. When the pressure block 52 slides inside the sleeve 51, the sliding rod 521 slides inside the elongated hole. The sliding rod 521 serves two purposes: firstly, it limits the pressure block 52, preventing it from sliding out of the sleeve 51; secondly, it prevents the pressure block 52 from rotating inside the sleeve 51, ensuring the stability of the pressure block 52's position.

[0049] Preferably, in this embodiment, the pressure block 52 is provided with a mounting hole for mounting the sliding rod 521. The sliding rod 521 can be made of elastic cylindrical pin, which can be automatically fixed inside the mounting hole. Since the pressure block 52 itself is small in size, it is inconvenient to operate when fixing the ordinary sliding rod 521. Therefore, using an elastic cylindrical pin can easily fix the sliding rod 521 inside the pressure block 52.

[0050] In some embodiments, the positioning sleeve 4 can be adopted as follows: Figure 1 , Figure 2 and Figure 3 The structure shown. See also... Figure 1 , Figure 2 and Figure 3 The positioning sleeve 4 is equipped with multiple sets of clamping pins 5, which are evenly spaced along the circumference of the positioning sleeve 4. Multiple sets of positioning pins are also installed on the positioning sleeve 4, and corresponding arc-shaped grooves 611 are provided on the drive sleeve 61. During use, the multiple sets of positioning pins can abut against the rotating shaft 1, improving the stability of the fixation between the positioning sleeve 4 and the rotating shaft 1.

[0051] Specifically, in this embodiment, multiple arc-shaped grooves 611 on the drive sleeve 61 have the same inclination angle and inclination direction along the circumference of the drive sleeve 61. When the drive sleeve 61 is rotated in the same direction, multiple clamping pins 5 can be guided to abut against the rotating shaft 1 simultaneously. At the same time, through the design of the elastic element 53 and the pressure block 52, the phenomenon of the drive sleeve 61 seizing or a single clamping pin 5 failing to work properly can be avoided.

[0052] In some embodiments, the positioning sleeve 4 can be adopted as follows: Figure 2 The structure shown. See also Figure 2An anti-rotation key 11 is provided between the positioning sleeve 4 and the rotating shaft 1 to prevent the positioning sleeve 4 from rotating circumferentially along the rotating shaft 1. Keyways for installing the anti-rotation key 11 are provided on both the inner wall of the positioning sleeve 4 and the outer wall of the rotating shaft 1, and the anti-rotation key 11 is slidably disposed within the keyways. The anti-rotation key 11 prevents the positioning sleeve 4 from rotating relative to the rotating shaft 1, and the locking pin 5 further prevents the positioning sleeve 4 from moving along the axis of the rotating shaft 1. This further improves the stability of the relative position between the positioning sleeve 4 and the rotating shaft 1.

[0053] Specifically, in this embodiment, during operation, the movable disk 3 experiences relatively little axial force on the rotating shaft 1, with the main force being circumferential. Therefore, by installing an anti-rotation key 11 between the positioning sleeve 4 and the rotating shaft 1, the circumferential force is counteracted. Furthermore, the friction between the clamping pin 5 and the rotating shaft 1 is sufficient to maintain the stability of the movable disk 3's position along the axial direction of the rotating shaft 1. When the movable disk 3 and the positioning sleeve 4 are separate structures, the positioning sleeve 4 abuts against the movable disk 3 to limit its position on the rotating shaft.

[0054] Optionally, in this embodiment, one end of the positioning sleeve 4 is fixedly installed on the movable disk 3 and is coaxially arranged with the movable disk 3. Combined with the setting of the anti-rotation key 11, the movable disk 3 and the rotating shaft 1 can rotate synchronously.

[0055] In some embodiments, the fixed disk 2 and the movable disk 3 can be adopted as follows: Figure 2 The structure shown. See also Figure 2 Guide discs 21 for guiding the strapping are fixedly installed on opposite sides of the fixed disc 2 and the movable disc 3. In this embodiment, the fixed disc 2 and the movable disc 3 are fixedly connected to their respective guide discs 21 by bolts. The finished strapping is a sleeve-shaped roll structure, and the outer diameter of the guide disc 21 matches the inner diameter of the strapping. When installing wide strapping, the two ends of the strapping are fitted onto the two guide discs 21 to ensure the stability of the strapping's installation position.

[0056] Specifically, in this embodiment, the two guide discs 21 are detachably connected to the fixed disc 2 and the movable disc 3, respectively, so as to facilitate the replacement of the corresponding guide disc 21 according to the size of the inner hole of the strapping.

[0057] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A quick assembly / disassembly mechanism for cable ties and reels, characterized in that, The utility model relates to a kind of rotating shafts and the locking assembly of its locking mechanism, including: Rotary shaft (1), fixedly installed with fixed disc (2) on the rotary shaft; Movable disc (3), sleeve is installed on the outside of the rotary shaft (1), and along the axis of the rotary shaft (1) slidingly arranged on the rotary shaft (1), the movable disc (3) and the fixed disc (2) between the installation gap for placing binding belt; Positioning sleeve (4), slidingly arranged on the rotary shaft (1), and located on the side of the movable disc (3) away from the fixed disc (2); Jack (5), slidingly arranged on the positioning sleeve (4), one end of the jack (5) can penetrate the positioning sleeve (4) and abut on the rotary shaft (1); Locking assembly (6), arranged between the positioning sleeve (4) and the jack (5), for pushing the jack (5) and abutting on the rotary shaft (1).

2. The strap reel quick release mechanism of claim 1, wherein, The locking assembly (6) includes: Driving sleeve (61), rotationally arranged on the outside of the positioning sleeve (4), the side wall of the driving sleeve (61) is provided with arc slot (611), the center line of the arc slot (611) and the axis of the positioning sleeve (4) between the interval is arranged along the circumferential direction of the positioning sleeve (4) increasing or decreasing; Guide rod (62), fixedly installed on the jack (5), and slidingly arranged inside the arc slot (611).

3. The strap reel quick release mechanism of claim 2, wherein, The arc slot (611) is also communicated with transition section (612), the center line of the transition section (612) is coaxially arranged with the positioning sleeve (4), and the interval between the center line of the transition section (612) and the axis of the positioning sleeve (4) is not greater than the minimum value of the interval between the center line of the arc slot (611) and the axis of the positioning sleeve (4).

4. The strap reel quick release mechanism of claim 3, wherein, The middle part or the end portion away from the arc slot (611) of the transition section (612) is concavely provided with limiting slot (613) for clamping the guide rod (62).

5. The strap reel quick release mechanism of claim 1, wherein, The jack (5) includes: Sleeve (51), slidingly arranged on the positioning sleeve (4); Press block (52), slidingly arranged on the sleeve (51) end close to the rotary shaft (1) along the axis direction of the sleeve (51), the press block (52) is used for jacking on the rotary shaft (1) and forms friction pair with the rotary shaft (1); Elastic member (53), installed between the sleeve (51) and the press block (52), for pushing the press block (52) and jacking on the rotary shaft (1).

6. The strap reel quick release mechanism of claim 5, wherein, The press block (52) is fixedly installed with sliding rod (521), the sliding rod (521) is arranged on the outside of the press block (52), and the side wall of the sleeve (51) is provided with elongated hole for installing the sliding rod (521).

7. The strap reel quick release mechanism of claim 1, wherein, The positioning sleeve (4) is installed with multiple sets of the jack (5), and multiple sets of the jack (5) are uniformly spaced along the circumferential direction of the positioning sleeve (4).

8. The strap reel quick release mechanism of claim 1, wherein, The positioning sleeve (4) and the rotary shaft (1) are provided with anti-rotation key (11) for preventing the positioning sleeve (4) from rotating along the circumferential direction of the rotary shaft (1).

9. The strap reel quick release mechanism of claim 1, wherein, The fixed disc (2) and the movable disc (3) are fixedly installed with a guide disc (21) for guiding the binding belt on the opposite side.

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