Plastic wire reel with anti-collapse edge

Abstract

The application discloses a plastic wire coil with an anti-collapse function and relates to the technical field of plastic wire coils.The plastic wire coil comprises a central shaft, shaft connecting assemblies arranged on both sides of the central shaft, a wire coil assembly and an anti-collapse mechanism.The anti-collapse mechanism is additionally arranged, the structure support assembly arranged in an annular array is used to real-time sense the stress state of the wire coil, the elastic deformation characteristics of the arc rib are utilized, the double-color sealed cavity structure formed by the cavity shell and the spacer is used, when the wire coil bears overload tension, abnormal lateral extrusion force or structural fatigue loss, the spacer will be broken along with the structural deformation, the internal color developing pigment is mixed and developed, the stress abnormality of the wire coil and the structural damage condition can be quickly judged through the intuitive color change, the visualization and instrument-free monitoring of the health state of the wire coil structure are realized, and the pain points that the plastic wire coil loss is invisible and the fault is difficult to predict are solved.

Description

Technical Field

[0001] This invention relates to the technical field of plastic reels, and particularly to a plastic reel with anti-collapse edge function. Background Technology

[0002] In long-distance fiber optic cable laying projects, optical fibers are very fragile and extremely sensitive to lateral pressure. Even a slight "collapse" deformation of the cable reel's side plate can compress the optical fiber, leading to signal attenuation or even breakage. Furthermore, fiber optic cable laying often takes place in the field, and the cable reel may undergo multiple reuses.

[0003] For example, the patent application with publication number CN219116855U, entitled "A Wear-Resistant Disc Body and a Plastic Reel Using the Same", describes how a protective layer on the disc body can reduce the impact force on the disc body when it suddenly hits the ground, thereby reducing the risk of the disc body being dented or cracked.

[0004] The aforementioned plastic cable reels suffer from insufficient radial stiffness of the side plates and a limited range of structural protection methods. Under conditions of cable winding, heavy-duty transportation, and long-term stacking, they are prone to side plate sagging, edge collapse, and overall deformation, leading to problems such as cable compression, wear, tangling, and unstable operation. Furthermore, the reels in these applications lack effective stress feedback and damage monitoring methods, making it impossible to visually identify structural fatigue, overload stress, and internal losses. This results in technical drawbacks such as invisible losses, difficulty in predicting faults, high risk of operating with defects, easy instantaneous collapse failure under extreme conditions, poor overall load-bearing adaptability, and high maintenance costs. Therefore, this application provides a plastic cable reel with anti-collapse edge function to meet this requirement. Summary of the Invention

[0005] The purpose of this application is to provide a plastic spool with anti-collapse edge function, which can effectively solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this application provides the following technical solution: a plastic reel with anti-collapse edge function, comprising: A central shaft, with shaft connection assemblies provided on both sides of the central shaft; A coil assembly, which is sleeved on the outer surface of the shaft connection assembly, is used to enhance the radial stiffness of the plastic coil side plate; An anti-collapse mechanism is embedded in the outer surface of the coil assembly and is used to manage the life cycle of the plastic coil. The anti-collapse mechanism includes a strength support component and a structural support component. Several structural support components are arranged in a circular array and installed inside the strength support component. The strength support component is configured to provide support strength to the structural support component. The structural support component is configured to provide feedback on the stress on the plastic coil.

[0007] The shaft connection assembly includes a clamping sleeve and a shaft connector. The clamping sleeve is inserted into the interior of the central shaft and connected by bolts. The shaft connector is connected to one end of the clamping sleeve, and the outer surface of the shaft connector has several threaded grooves.

[0008] The shaft connector is in the shape of a ring cone, and the cone surface of the shaft connector is configured to distribute the force.

[0009] The coil assembly includes a central bushing and a base. The central bushing is fitted and attached to the outer surface of the shaft connector, and the base is fixedly installed on the outer surface of the central bushing.

[0010] The chassis has several support ribs arranged in a ring array on one side, and the support ribs have inclined limiting holes inside. A screw is installed inside the limiting hole and is threaded into the threaded groove.

[0011] The angle between the central axis of the screw and the central axis of the shaft connector is between 70° and 90°.

[0012] The chassis has several slots arranged in a circular array on one side, and the support ribs have placement slots on both sides.

[0013] The strength support component includes a mounting plate and a ring plate. A plurality of clips are provided on one side of the mounting plate, and the clips are engaged with the outer surface of the support rib. The ring plate is disposed on one side of the mounting plate, and one side of the ring plate is provided with a plurality of snap protrusions arranged in a ring array, the snap protrusions engaging inside the snap groove.

[0014] Among them, a plurality of support members arranged in a ring array are provided between the ring plate and the mounting plate, and a spacer is provided between each two adjacent structural support components. The spacer is configured to support the structural strength of the ring plate and the mounting plate.

[0015] The structural support component includes an arc rib, and each end of the arc rib is provided with an insert, which is snapped into the inside of the placement groove. The arc rib is arc-shaped and closely attached to the surface of the support member. The outer surface of the arc rib is provided with a mounting groove. A cavity shell is provided inside the mounting groove. A spacer is provided inside the cavity shell. The spacer divides the interior of the cavity shell into two sealed cavities.

[0016] In summary, the technical effects and advantages of this invention are as follows: 1. This invention adds an embedded anti-collapse mechanism, which relies on the structural support components arranged in a ring array to sense the stress state of the coil in real time. Utilizing the elastic deformation characteristics of the arc ribs, and in conjunction with the dual-color sealed cavity structure composed of the shell and spacers, when the coil is subjected to overload tension, abnormal lateral extrusion force, or fatigue wear of the structure, the spacers will break along with the structural deformation, causing the internal color pigments to mix and develop color. The abnormal stress and structural damage of the coil can be quickly determined through the intuitive color change, realizing the visualization of the coil's structural health status and instrument-free monitoring, solving the pain points of invisible wear and difficult fault prediction of plastic coils.

[0017] 2. This invention adopts a double-layer composite protective structure of strength support components and structural support components. The strength support components form an integral rigid support base through mounting plate, ring plate, support components and spacers, providing a stable support foundation for the inner structural support components, forming a primary rigid protection; the elastic arc ribs can adaptively buffer the impact of force, forming a secondary flexible protection. The double-layer protective structure works together to avoid the disadvantages of traditional plastic reel single thin-walled structure being prone to excessive deformation and instantaneous collapse under force, greatly improving the structural integrity and stability of the reel under extreme working conditions such as heavy load and high frequency operation, and greatly improving the reliability of protection.

[0018] 3. This invention utilizes a shaft connection assembly between the central shaft and the reel assembly to distribute stress using a ring-cone structure shaft connection. Combined with a screw assembled at an inclined angle and a ring-shaped array of support ribs, a three-dimensional support structure is formed, effectively enhancing the radial stiffness and overall load-bearing capacity of the plastic reel side plate. This effectively prevents defects such as side plate indentation, edge collapse, and deformation of the reel under conditions of cable entanglement, heavy-load transportation, and long-term stacking storage, ensuring smooth and stable cable winding and unwinding operations throughout the process. It also eliminates problems such as cable squeezing, wear, and tangling caused by reel deformation, improving the safety and structural durability of the reel. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of a plastic spool; Figure 2 This is a partial three-dimensional structural diagram of a plastic spool; Figure 3 A schematic diagram of the three-dimensional connection structure of the coil assembly, the anti-collapse mechanism, and the shaft connection assembly; Figure 4This is a schematic diagram of the three-dimensional connection structure between the shaft assembly and the central shaft; Figure 5 A schematic diagram of the three-dimensional connection structure of the coil assembly and the anti-collapse mechanism; Figure 6 This is a schematic diagram of the three-dimensional connection structure of the coil assembly; Figure 7 A first-person perspective three-dimensional cross-sectional view of the connection structure of the coil assembly; Figure 8 A second-view, three-dimensional sectional view of the connection structure of the coil assembly; Figure 9 This is a sectional view of the chassis's three-dimensional connection structure. Figure 10 A diagram showing the angle between the screw and the shaft connector; Figure 11 A diagram showing the angle between the screw and the shaft connector; Figure 12 A schematic diagram of the three-dimensional connection structure of the strength support component; Figure 13 A schematic diagram of the three-dimensional connection structure of the anti-collapse mechanism; Figure 14 A first-person perspective three-dimensional connection structure diagram of the strength support component; Figure 15 A second-view three-dimensional connection structure diagram of the strength support component; Figure 16 A schematic diagram of the three-dimensional connection structure from a third-view perspective for the strength support components; Figure 17 A schematic diagram of the three-dimensional connection structure of the support and spacer components; Figure 18 A schematic diagram of the three-dimensional connection structure of the structural support components; Figure 19 A schematic diagram of the three-dimensional connection structure of the arc rib and the inlay; Figure 20 This is a schematic diagram of the three-dimensional connection structure of the cavity shell.

[0021] In the diagram: 1. Central shaft; 2. Wire coil assembly; 20. Limiting hole; 21. Central shaft sleeve; 22. Base plate; 23. Slot; 24. Support rib; 25. Placement slot; 26. Screw; 3. Anti-collapse mechanism; 31. Strength support assembly; 311. Mounting plate; 312. Clip; 313. Spacer; 314. Support; 315. Ring plate; 316. Clip protrusion; 32. Structural support assembly; 321. Arc rib; 322. Inlay; 323. Mounting slot; 324. Cavity shell; 325. Spacer; 4. Shaft connection assembly; 41. Shaft connection; 42. Threaded groove; 43. Clip sleeve. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1, Reference Figures 1 to 20 The plastic reel shown has an anti-collapse edge function, including a central shaft 1, a reel assembly 2, and an anti-collapse mechanism 3.

[0024] Among them, shaft connection components 4 are provided on both sides of the central shaft 1, and the coil assembly 2 is sleeved on the outer surface of the shaft connection component 4. It is mainly used to enhance the radial stiffness of the plastic coil side plate and improve the overall structural stability of the coil. The anti-collapse mechanism 3 is embedded in the outer surface of the coil assembly 2 to monitor and manage the service life of the plastic coil and provide timely feedback on structural damage.

[0025] Specifically, the anti-collapse mechanism 3 includes a strength support component 31 and a structural support component 32. Several structural support components 32 are provided, and these components are arranged in a circular array inside the strength support component 31. The strength support component 31 is configured to provide stable support strength to the structural support component 32, preventing excessive deformation and collapse of the structural support component 32 under stress. Among them, the strength support component 31 serves as a base, providing a stable support environment for the internal structural support component 32. This avoids the problem of excessive deformation or instantaneous collapse that easily occurs when a single thin-walled structure is subjected to force, ensuring that the anti-collapse mechanism 3 can still maintain basic morphological integrity under extreme working conditions, thus playing a secondary protection role.

[0026] The structural support component 32 is configured to provide real-time feedback on the stress on the plastic reel, enabling visualized monitoring of the reel's lifespan and structural condition.

[0027] By observing the feedback from the structural support component 32, the remaining lifespan and damage level of the cable reel can be determined, thus deciding whether to replace the anti-collapse mechanism 3 or the entire cable reel. This modular monitoring and maintenance method avoids blind scrapping operations caused by unclear local stress, reducing the overall cost of cable management.

[0028] Example 2: Based on the above examples, this example further refines the specific structure of the shaft connection assembly 4. The shaft connection assembly 4 includes a clamp sleeve 43 and a shaft connection member 41. The clamp sleeve 43 is inserted into the interior of the central shaft 1 and is fastened by bolts to ensure the stability and detachability of the connection between the clamp sleeve 43 and the central shaft 1. The shaft connector 41 is fixedly connected to one end of the clamp sleeve 43, and the outer surface of the shaft connector 41 is provided with several evenly distributed threaded grooves 42 for subsequent threaded assembly and fixation with the wire coil assembly 2.

[0029] Furthermore, the shaft connector 41 is generally in the shape of a ring cone, combined with the attached... Figure 4 As shown, the ring-cone structure is a sloping ring structure. The conical surface of the shaft connector 41 is configured to distribute the concentrated force generated during the operation of the coil, so as to avoid stress concentration that could lead to local structural damage.

[0030] When assembling and using this shaft connector assembly 4, first insert the clamp sleeve 43 into the interior of the central shaft 1, and then lock and fix the clamp sleeve 43 with bolts. The force is distributed by relying on the annular conical slope structure of the shaft connector 41. At the same time, the threaded groove 42 is regularly opened on the outer surface of the shaft connector 41 to provide a precise positioning and locking structure for subsequent component assembly.

[0031] Example 3: Based on Examples 1 and 2, this example refines the specific structure of the coil assembly 2. The coil assembly 2 includes a central bushing 21 and a base 22. The central bushing 21 is fitted and tightly fitted to the outer surface of the shaft connector 41, realizing precise docking and assembly between the coil assembly 2 and the shaft connector 4. The base 22 is fixedly installed on the outer surface of the central bushing 21, serving as the main load-bearing structure for winding the wire on the coil.

[0032] A number of support ribs 24 arranged in a ring array are provided on one side of the chassis 22 to strengthen the overall structural strength of the chassis 22 and improve its resistance to deformation. The support ribs 24 have inclined limiting holes 20 inside, and screws 26 are installed inside the limiting holes 20. The screws 26 are connected to the inside of the threaded groove 42 by thread matching, so as to realize the fastening connection between the support ribs 24 and the shaft connector 41.

[0033] The angle between the central axis of the screw 26 and the central axis of the shaft connector 41 is set within the range of 70° to 90°. Several slots 23 arranged in a circular array are also provided on one side of the chassis 22, and placement slots 25 are provided on both sides of the support rib 24, providing positioning and installation space for the subsequent installation of the anti-collapse mechanism 3.

[0034] The specific assembly and force-bearing principle of coil assembly 2 are as follows: The central bushing 21 is fitted onto the surface of the shaft connector 41. After initial positioning, the limiting hole 20 inside the support rib 24 is aligned with the threaded groove 42 on the surface of the shaft connector 41. The screw 26 is inserted into the limiting hole 20 and locked inside the threaded groove 42. The support ribs 24 distributed in a ring array can support the chassis 22 in all directions, greatly improving the structural stability of the chassis 22.

[0035] By limiting the included angle between the screw 26 and the shaft connector 41, the load-bearing capacity of the plastic coil can be precisely adjusted to adapt to different wire winding and transportation conditions. The preferred included angle is 85°, at which the screw 26 can evenly bear the lateral extrusion force and the vertical extrusion force, resulting in the best overall load-bearing capacity. When the included angle is in the range of 85° to 90°, the screw 26 and the support rib 24 cooperate with each other to greatly improve the vertical support strength of the chassis 22, which is suitable for working conditions that require high radial load capacity. When the included angle is in the range of 70° to 85°, the lateral bearing capacity of the chassis 22 is improved, which can be adapted to the application scenarios with large lateral forces. In the case of optical fiber winding and transportation, the included angle can be adjusted to make the coil have stronger vertical and radial bearing capacity, ensuring the stability of optical fiber storage and transportation process.

[0036] It is worth noting that the present invention, by setting a shaft connection component 4 between the central shaft 1 and the coil assembly 2, utilizes the annular cone structure of the shaft connection component 41 to achieve stress dispersion, and combines the inclined screw 26 and the ring array of support ribs 24 to form a three-dimensional support structure, effectively strengthening the radial stiffness and overall load-bearing capacity of the plastic coil side plate. This effectively avoids defects such as side plate indentation, edge collapse, and deformation of the coil under conditions of cable winding, heavy-duty transportation, and long-term stacking storage, ensuring smooth and stable cable winding and unwinding operations throughout the process, eliminating problems such as cable squeezing, wear, and tangled wires caused by coil deformation, and improving the safety and structural durability of the coil.

[0037] Example 4: Based on all the above examples, this example refines the specific structure of the anti-collapse mechanism 3. The strength support component 31 includes a mounting plate 311 and a ring plate 315. A plurality of clips 312 are provided on one side of the mounting plate 311. The clips 312 are snapped and fixed to the outer surface of the support rib 24 to realize the positioning and assembly of the mounting plate 311 and the wire coil component 2. The ring plate 315 is arranged on one side of the mounting plate 311, and a number of locking protrusions 316 arranged in a ring array are provided on one side of the ring plate 315. The locking protrusions 316 are correspondingly engaged in the slots 23 of the chassis 22 to complete the limiting and fixing of the ring plate 315.

[0038] A number of support members 314 arranged in a ring array are provided between the ring plate 315 and the mounting plate 311. A spacer 313 is provided between each two adjacent structural support components 32. The spacer 313 and the support members 314 cooperate with each other to support the overall structural strength of the ring plate 315 and the mounting plate 311.

[0039] In this invention, a double-layer composite protective structure of strength support component 31 and structural support component 32 is adopted. The strength support component 31 forms an integral rigid support base through mounting plate 311, ring plate 315, support member 314 and spacer member 313, providing a stable support foundation for the inner structural support component 32 and forming a first-level rigid protection. The elastic arc rib 321 can adaptively buffer the impact of force, forming a two-level flexible protection. The double-layer protection structure works together to avoid the drawbacks of the traditional plastic coil single thin-walled structure being prone to excessive deformation and instantaneous collapse under force. It greatly improves the structural integrity and stability of the coil under extreme working conditions such as heavy load and high frequency operation, and greatly improves the reliability of protection.

[0040] The structural support component 32 includes an arc rib 321, with inserts 322 fixedly mounted at both ends of the arc rib 321. The inserts 322 are correspondingly engaged with the placement slots 25 on both sides of the support rib 24, achieving stable installation of the arc rib 321. The arc rib 321 has an overall arc structure and fits tightly against the surface of the support component 314, obtaining stable support by relying on the support component 314.

[0041] The outer surface of the arc rib 321 is provided with a mounting groove 323. A cavity shell 324 is embedded inside the mounting groove 323. A spacer 325 is fixedly installed inside the cavity shell 324. The spacer 325 divides the cavity shell 324 into two independent sealed cavities. Both sealed cavities are filled with coloring pigment.

[0042] In this invention, an embedded anti-collapse mechanism 3 is added. The structural support components 32 arranged in a ring array sense the stress state of the coil in real time. Utilizing the elastic deformation characteristics of the arc ribs 321, and in conjunction with the dual-color sealed cavity structure formed by the cavity shell 324 and the spacer 325, when the coil is subjected to overload tension, abnormal lateral extrusion force, or fatigue wear of the structure, the spacer 325 will break with the structural deformation, causing the internal color pigments to mix and develop color. The abnormal stress and structural damage of the coil can be quickly determined through the intuitive color change, realizing the visualization of the coil's structural health status and instrument-free monitoring. This solves the pain points of invisible wear and difficult fault prediction of plastic coils.

[0043] The assembly and working principle of this anti-collapse mechanism 3 are as follows: After the screw 26 of the online plate assembly 2 is assembled, the locking protrusion 316 of the ring plate 315 is inserted into the locking groove 23 of the chassis 22, and at the same time, the locking piece 312 of the mounting plate 311 is locked and fixed on the outer surface of the support rib 24. The locking piece 312 can stably fix the side force-bearing structure of the mounting plate 311, and the locking protrusion 316 can realize the overall fixation of the ring plate 315 and the outer diameter structure of the mounting plate 311, ensuring the assembly stability of the strength support assembly 31.

[0044] During the assembly of the ring plate 315 and the mounting plate 311, the inserts 322 at both ends of the arc rib 321 are inserted into the placement grooves 25 of the support rib 24, so that the arc rib 321 is stably supported on the surface of the support member 314. The arc rib 321 is made of elastic material and can produce a small deformation under force. At the same time, the support member 314 can provide rigid support for the arc rib 321, effectively limiting the excessive deformation of the arc rib 321. Combined with appendix Figure 15 As shown, the spacers 313 distributed in a ring array can further enhance the structural stability of the arc ribs 321 and completely prevent collapse and deformation problems.

[0045] During long-term use and stress, if the support component 314 or spacer 313 is damaged or the arc rib 321 is excessively deformed, it will cause the cavity shell 324 to deform synchronously, which will then squeeze the internal spacer 325 and cause it to break. After the spacer 325 breaks, the color pigments in the two sealed cavities inside the cavity shell 324 mix with each other. Through the intuitive change in the color of the mixed pigments, the structural damage and wear and tear of the anti-collapse mechanism 3 and even the entire plastic spool can be quickly determined, so as to achieve accurate management and failure warning of the spool's service life.

[0046] This invention changes the traditional usage mode of plastic cable reels without monitoring and passively replacing damaged parts, realizing an upgrade from passive protection to proactive operation and maintenance. Relying on the visual feedback function of the anti-collapse mechanism 3, staff can judge the degree of structural damage and remaining service life of the cable reel, and carry out targeted local inspections, component replacements or overall scrapping operations, avoiding blindly scrapping intact equipment. At the same time, it eliminates the problems of cable damage, equipment failure and operational safety hazards caused by operating cable reels with defects. The modular assembly structure facilitates disassembly and maintenance, effectively simplifies the operation and maintenance process, and significantly reduces the overall management and maintenance costs of equipment in cable storage, transportation and operation scenarios.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A plastic reel with anti-collapse edge function, characterized in that, include: A central shaft (1) is provided on both sides of the central shaft (1). The coil assembly (2) is sleeved on the outer surface of the shaft connection assembly (4) to enhance the radial stiffness of the plastic coil side plate; Anti-collapse mechanism (3), which is embedded in the outer surface of the coil assembly (2) and is used to manage the service life of the plastic coil; The anti-collapse mechanism (3) includes a strength support component (31) and a structural support component (32). The structural support component (32) is provided in a plurality of units arranged in a ring array and installed inside the strength support component (31). The strength support component (31) is configured to provide support strength for the structural support component (32). The structural support component (32) is configured to provide feedback on the stress of the plastic coil. The strength support component (31) includes a mounting plate (311) and a ring plate (315), and a plurality of fasteners (312) are provided on one side of the mounting plate (311). The ring plate (315) is disposed on one side of the mounting plate (311), and a plurality of card protrusions (316) arranged in a ring array are provided on one side of the ring plate (315). A plurality of support members (314) arranged in a ring array are provided between the ring plate (315) and the mounting plate (311). A spacer (313) is provided between each two adjacent structural support components (32). The spacer (313) is configured to support the structural strength of the ring plate (315) and the mounting plate (311). The structural support component (32) includes an arc rib (321), with an insert (322) at both ends of the arc rib (321). The arc rib (321) is arc-shaped and closely attached to the surface of the support component (314). An installation groove (323) is provided on the outer surface of the arc rib (321). A cavity shell (324) is provided inside the installation groove (323). A spacer (325) is provided inside the cavity shell (324). The spacer (325) divides the interior of the cavity shell (324) into two sealed cavities.

2. A plastic reel with anti-collapse edge function according to claim 1, characterized in that: The shaft connection assembly (4) includes a clamp sleeve (43) and a shaft connector (41). The clamp sleeve (43) is inserted into the interior of the central shaft (1) and connected by bolts. The shaft connector (41) is connected to one end of the clamp sleeve (43), and the outer surface of the shaft connector (41) is provided with several threaded grooves (42).

3. A plastic reel with anti-collapse edge function according to claim 2, characterized in that: The shaft connector (41) is in the shape of a ring cone, and the cone surface of the shaft connector (41) is configured to distribute the force.

4. A plastic reel with anti-collapse edge function according to claim 2, characterized in that: The coil assembly (2) includes a central bushing (21) and a base (22). The central bushing (21) is fitted and attached to the outer surface of the shaft connector (41), and the base (22) is fixedly installed on the outer surface of the central bushing (21).

5. A plastic reel with anti-collapse edge function according to claim 4, characterized in that: The chassis (22) has a number of support ribs (24) arranged in a ring array on one side, and the support ribs (24) have a limiting hole (20) inclined inside. The limiting hole (20) has a screw (26) inside, and the screw (26) is threaded into the threaded groove (42).

6. A plastic reel with anti-collapse edge function according to claim 5, characterized in that: The angle between the central axis of the screw (26) and the central axis of the shaft connector (41) is between 70° and 90°.

7. A plastic reel with anti-collapse edge function according to claim 5, characterized in that: The chassis (22) has several slots (23) arranged in a ring array on one side, and the support rib (24) has placement slots (25) on both sides.

8. A plastic reel with anti-collapse edge function according to claim 7, characterized in that: The clip (312) is engaged with the outer surface of the support rib (24), the clip protrusion (316) is engaged with the inside of the clip groove (23), and the insert (322) is engaged with the inside of the placement groove (25).

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