Device for preparing NOL ring

Abstract

The utility model relates to the technical field of composite material winding forming, in particular to a device for preparing an NOL ring, the device for preparing the NOL ring comprises a rotating shaft, a plurality of winding discs and a plurality of partition discs, and each winding disc is formed by splicing a plurality of splicing plates in the circumferential direction; the diameter of the partition discs is larger than that of the winding discs, and the multiple winding discs and the multiple partition discs are alternately arranged on the rotating shaft in a sleeving mode. According to the design, when demolding is carried out after curing, only one splice plate needs to be dismantled, the winding disc can be dispersed into a plurality of splice plates, demolding is completed, the demolding efficiency is improved, and damage to the NOL ring is avoided.

Description

Technical Field

[0001] This application relates to the technical field of composite material winding molding, and particularly relates to a device for preparing NOL rings. Background Art

[0002] An NOL ring is a reinforced plastic product obtained by winding continuous fibers impregnated with a binder around a core mold in a certain manner and then curing it. It has excellent mechanical properties and durability and can withstand high-temperature and high-pressure environments. Therefore, it is widely used in the fields of electric power, energy, aerospace, etc.

[0003] However, in the current device for preparing NOL rings, since the fibers are wound around the core mold with a certain pre-tightening force during the preparation process, and due to the viscous effect of the binder, the NOL ring is easily damaged during demolding, resulting in waste. Utility Model Content

[0004] To solve the above technical problems, this application provides a device for preparing NOL rings, which improves the demolding efficiency and also enhances the preparation efficiency.

[0005] According to some embodiments, this application provides a device for preparing NOL rings, which includes:

[0006] A rotating shaft;

[0007] A plurality of winding discs, each of which is formed by splicing a plurality of splicing plates along the circumferential direction;

[0008] A plurality of partition discs, the diameter of the partition discs is larger than the diameter of the winding discs, and the plurality of winding discs and the plurality of partition discs are alternately sleeved on the rotating shaft.

[0009] In some embodiments of this application, the plurality of splicing plates include a plurality of first splicing plates and at least one second splicing plate;

[0010] The first splicing plate includes a first inner arc surface, a first outer arc surface, and two first side surfaces. The first side surfaces connect the first inner arc surface and the first outer arc surface. The first inner arc surface abuts against the outer circumferential surface of the rotating shaft, and first grooves are formed on the first side surfaces;

[0011] The second splicing plate includes a second inner arc surface, a second outer arc surface, and two second side surfaces. The second side surfaces connect the second inner arc surface and the second outer arc surface. The second side surfaces abut against the first side surfaces, and first limiting protrusions adapted to the first grooves are arranged on the second side surfaces.

[0012] In some embodiments of the present application, the first outer arc surface and the second outer arc surface form the outer circumferential surface of the winding disc. In the radial direction of the winding disc, the length of the second side surface is less than the length of the first side surface.

[0013] In some embodiments of the present application, a plurality of second limiting protrusions are circumferentially and spacedly arranged on the outer circumferential surface of the rotating shaft. The plurality of second limiting protrusions all extend along the axial direction of the rotating shaft, and the plurality of second limiting protrusions correspond to the plurality of first splicing plates one by one;

[0014] A second groove is formed on the first inner arc surface, and the second groove is adapted to the second limiting protrusion.

[0015] In some embodiments of the present application, a third groove adapted to the second limiting protrusion is formed on the inner circumferential surface of the partition disc.

[0016] In some embodiments of the present application, a plurality of first through holes are formed at the same position on the plurality of winding discs and the plurality of partition discs. The plurality of first through holes are circumferentially and spacedly arranged along the circumferences of the winding disc and the partition disc. The first through holes extend along the axial direction of the rotating shaft, and the first through holes are matched with fasteners to fix the winding disc and the partition disc.

[0017] In some embodiments of the present application, a plurality of second through holes are formed at the same position on the plurality of winding discs and the plurality of partition discs. The plurality of second through holes are circumferentially and spacedly arranged along the circumferences of the winding disc and the partition disc.

[0018] In some embodiments of the present application, both the first through hole and the second through hole are formed on the first splicing plate.

[0019] In some embodiments of the present application, the plurality of partition discs include a first partition disc and a second partition disc, and the diameter of the first partition disc is greater than the diameter of the second partition disc.

[0020] In some embodiments of the present application, a third limiting protrusion protruding from the outer circumferential surface of the rotating shaft is provided on the rotating shaft, and the third limiting protrusion is used for limiting the partition disc.

[0021] The device for preparing the NOL ring provided by the present application can achieve the following beneficial technical effects:

[0022] The device for preparing NOL rings provided by this application can prepare multiple NOL rings with improved preparation efficiency by alternately sleeving and winding discs and partition discs on a rotating shaft. When multiple fibers are wound around the outer circumferential surfaces of multiple winding discs, the partition discs are used to partition the multiple fibers. Additionally, the winding disc is arranged to be composed of multiple splicing plates spliced circumferentially. During demolding, only one splicing plate needs to be removed, and the entire winding disc is dispersed into multiple splicing plates, improving the demolding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings herein are incorporated into and form a part of the specification, showing embodiments of the present application and, together with the description, are used to explain the principles of the present application. In these drawings, like reference numerals are used to represent like elements. The following drawings are some embodiments of the present application, not all embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 is a schematic structural diagram of a device for preparing NOL rings shown in an embodiment of the present application;

[0025] Figure 2 is Figure 1 a schematic cross-sectional view of the winding disc in ;

[0026] Figure 3 is Figure 1 a schematic structural diagram of the partition disc in.

[0027] Reference Numerals:

[0028] 100, rotating shaft; 110, third limiting protrusion; 120, nut; 130, gasket;

[0029] 200, winding disc; 210, first splicing plate; 2110, first groove; 2120, second groove; 220, second splicing plate; 2210, first limiting protrusion;

[0030] 300, partition disc; 310, first partition disc; 320, second partition disc; 330, third groove;

[0031] 400, first through hole;

[0032] 500, second through hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of this application without creative efforts shall fall within the scope of protection of this application. It should be noted that, without conflict, the embodiments in this application and the features in the embodiments may be combined with each other arbitrarily.

[0034] The NOL ring, also known as a fiber-wound reinforced composite material annular specimen, is a fiber-reinforced composite material product obtained by winding continuous fibers impregnated with a binder around a mandrel in a certain manner and then curing and demolding. The binder is, for example, an epoxy resin adhesive; the NOL ring has excellent mechanical properties and durability and can withstand high-temperature and high-pressure environments, so it is widely used in the fields of electric power, energy, aerospace, etc.

[0035] Since the fibers are wound around the mandrel with a certain pre-tightening force and, under the viscous action of the binder, the fibers will adhere to the mandrel and it is difficult to demold, the NOL ring is prone to damage during demolding, resulting in waste of raw material costs and labor costs.

[0036] To solve the above problems, this application provides a device for preparing an NOL ring. By alternately sleeving winding discs and partition discs on a rotating shaft, when multiple fibers are wound around the outer circumferential surfaces of multiple winding discs, the partition discs are used to partition the multiple fibers, and multiple NOL rings can be prepared, improving the preparation efficiency; in addition, the winding disc is arranged to be composed of multiple splicing plates spliced along the circumferential direction. During demolding, only one splicing plate needs to be removed, and the entire winding disc will be dispersed into multiple splicing plates, improving the demolding efficiency.

[0037] The device for preparing an NOL ring provided according to this application will be described in detail below with reference to the accompanying drawings.

[0038] It should be noted that Figure 1 the x-axis direction in

[0039] An exemplary embodiment of this application provides a device for preparing an NOL ring, as shown in Figure 1 and Figure 2As shown in the figure, the device for preparing the NOL ring includes a rotating shaft 100, a plurality of winding discs 200 and a plurality of partition discs 300. Among them, the rotating shaft 100 extends along the x-axis direction. The winding discs 200 and the partition discs 300 are alternately sleeved on the rotating shaft 100. A third limiting protrusion 110 is provided at one end of the rotating shaft 100. The third limiting protrusion 110 protrudes annularly from the outer circumferential surface of the rotating shaft 100 and is used to limit the partition disc 300. An external thread is provided on the outer circumferential surface of the other end of the rotating shaft 100. A nut 120 is sleeved on the rotating shaft 100 to limit the partition disc 300 at the other end. A gasket 130 can be provided between the nut 120 and the partition disc 300. The gasket 130 increases the contact area between the nut 120 and the partition disc 300, ensuring that the partition disc 300 is not worn. In addition, the gasket 130 can also increase the friction between the nut 120 and the partition disc 300 to avoid loosening.

[0040] It should be noted that at both ends along the x-axis direction, that is, the discs in contact with the gasket 130 and the third limiting protrusion 110 should be set as the partition discs 300 to partition the adjacent winding discs 200 and ensure the normal winding of the fibers.

[0041] Each winding disc 200 is formed by splicing a plurality of splicing plates along the circumferential direction; the diameter of the partition disc 300 is larger than that of the winding disc 200.

[0042] By alternately sleeving the winding discs 200 and the partition discs 300 on the rotating shaft 100, when multiple fibers are wound around the outer circumferential surfaces of the plurality of winding discs 200, the partition discs 300 are used to partition the multiple fibers, and multiple NOL rings can be prepared, improving the preparation efficiency. In addition, the winding disc 200 is set to a structure formed by splicing a plurality of splicing plates along the circumferential direction. During demolding, only one splicing plate needs to be removed, and the entire winding disc 200 is dispersed into multiple splicing plates and separated from the manufactured NOL ring at the same time, improving the demolding efficiency and avoiding damage to the NOL ring.

[0043] In some embodiments, such as Figure 2As shown in the figure, a plurality of splicing plates include a plurality of first splicing plates 210 and at least one second splicing plate 220. The first splicing plates 210 and the second splicing plate 220 are combined together to form a winding disc 200. In this embodiment, there are four first splicing plates 210, the central angle of the first splicing plate 210 is 80°, there is one second splicing plate 220, and the central angle of the second splicing plate 220 is 40°. The central angle of an arc refers to the included angle between two radii passing through the two ends of the arc. Therefore, the central angle of the first splicing plate 210 is the central angle corresponding to the first outer arc or the first inner arc, and the central angle of the second splicing plate 220 is the central angle corresponding to the second outer arc or the second inner arc. Those skilled in the art can also set the central angles of the first splicing plate 210 and the second splicing plate 220 according to actual needs, as long as the sum of their central angles is 360°.

[0044] The first splicing plate 210 includes a first inner arc surface, a first outer arc surface and two first side surfaces. The first side surfaces are parallel to the axial direction of the rotating shaft 100 and extend along the radial direction of the winding disc 200. The first side surfaces connect the two ends of the first inner arc surface and the first outer arc surface. The first inner arc surface abuts against the outer circumferential surface of the rotating shaft 100. First grooves 2110 are formed on the first side surfaces.

[0045] The second splicing plate 220 includes a second inner arc surface, a second outer arc surface and two second side surfaces. The first side surfaces are parallel to the axial direction of the rotating shaft 100 and extend along the radial direction of the winding disc 200. The two second side surfaces respectively connect the two ends of the second inner arc surface and the second outer arc surface. The second side surfaces abut against the first side surfaces. First limiting protrusions 2210 adapted to the first grooves 2110 are arranged on the second side surfaces. Here, "adapted" means that the first limiting protrusions 2210 can just be inserted into the first grooves 2110, and the two form a tightly connected structure of concave-convex combination. In this embodiment, the cross-sections of the first limiting protrusions 2210 and the first grooves 2110 are both rectangular structures. Those skilled in the art can also set them to other shapes, which are all within the protection scope of this application.

[0046] By forming the first grooves 2110 on the first side surfaces and arranging the corresponding first limiting protrusions 2210 on the second side surfaces, after splicing is completed, the first side surfaces of the first splicing plates 210 and the second side surfaces of the second splicing plates 220 are in an abutting state, that is, there is an interaction force. The splicing and fixing of the winding disc 200 are realized between the first splicing plates 210 and the second splicing plates 220 through a simple mortise and tenon structure. In addition, the structures of the plurality of first splicing plates 210 are the same, and multiple pieces can be processed at one time, saving processing time and processes.

[0047] In another embodiment, first grooves 2110 are only formed on the first side surfaces of the two first splicing plates 210 that abut against the second splicing plate 220, and no first grooves 2110 are provided on the other first splicing plates 210. This is also a splicing scheme that can be realized.

[0048] In some embodiments, referring to Figure 2 , the first outer arc surface of the first splicing plate 210 and the second outer arc surface of the second splicing plate 220 together form the outer circumferential surface of the winding disk 200, that is, the surface in contact with the fiber; the first inner arc surface abuts against the outer circumferential surface of the rotating shaft 100, while the second inner arc surface does not contact the outer circumferential surface of the rotating shaft 100. That is, in the radial direction of the winding disk 200, the length of the second side surface is less than the length of the first side surface.

[0049] With such a design, the total weight of the winding disk 200 is reduced by reducing the weight of the second splicing plate 220, which is beneficial for the operator to carry, install and disassemble, and improves the preparation efficiency.

[0050] In some embodiments, continuing to refer to Figure 2 , on the outer circumferential surface of the middle section of the rotating shaft 100, that is, the part where the winding disk 200 and the partition disk 300 need to be sleeved, a plurality of second limiting protrusions extending in the x-axis direction are provided. The plurality of second limiting protrusions are arranged at intervals along the circumferential direction of the rotating shaft 100. The number of the second limiting protrusions is equal to the number of the first splicing plates 210. Second grooves 2120 adapted to the second limiting protrusions are formed on the first inner arc surface, and the number of the second limiting protrusions is equal to the number of the second grooves 2120.

[0051] The number of the second limiting protrusions is at least equal to the number of the first splicing plates 210. In another embodiment, the number of the second limiting protrusions is twice the number of the first splicing plates 210. That is, two second grooves 2120 are formed on the first inner arc surface of each first splicing plate 210. The second limiting protrusions on the rotating shaft 100 are inserted into the second grooves 2120 to achieve more stable splicing of the winding disk 200 in the circumferential direction of the rotating shaft 100, and ensure the stability of the winding disk 200 during the rotation of the rotating shaft 100.

[0052] In some embodiments, as Figure 3 shown, third grooves 330 adapted to the second limiting protrusions are formed on the inner circumferential surface of the partition disk 300. The number of the third grooves 330 is equal to the number of the second limiting protrusions. The cooperation between the third grooves 330 and the second limiting protrusions realizes the fixation of the partition disk 300 in the circumferential direction of the rotating shaft 100, and ensures the stability of the partition disk 300 during the rotation of the rotating shaft 100.

[0053] In some embodiments, as Figure 2 and Figure 3As shown, each winding disc 200 and each partition disc 300 are provided with a first through hole 400. When the winding disc 200 and the partition disc 300 are sleeved on the rotating shaft 100, the first through holes 400 are arranged at the same position of the winding disc 200 and the partition disc 300, that is, a plurality of first through holes 400 communicate to form a through hole extending along the x-axis direction and penetrating the winding disc 200 and the partition disc 300 for a fastener to pass through; the first through holes 400 on the winding disc 200 are close to the first inner arc surface of the first splicing plate 210 and are arranged at intervals along the circumferential direction of the winding disc 200, and the first through holes 400 on the partition disc 300 are close to the inner circumferential surface of the partition disc 300 and are arranged at intervals along the circumferential direction of the partition disc 300.

[0054] The number of the first through holes 400 is equal to the number of the first splicing plates 210, or the number of the first through holes 400 is an integer multiple of the number of the first splicing plates 210, and the first through holes 400 on the partition disc 300 are arranged corresponding to the winding disc 200. In this embodiment, four first through holes 400 are provided, and one first through hole 400 is provided on each first splicing plate 210. Other numbers of the first through holes 400 can also be provided, which will not be elaborated here.

[0055] By providing the first through holes 400 at the same position on the winding disc 200 and the partition disc 300, the fastener passes through all the first through holes 400 at the same position to fix the winding disc 200 and the partition disc 300 together, reducing the number of fasteners required by the single-ring winding method, improving the disassembly and assembly efficiency of the operator, and saving time.

[0056] In some embodiments, as Figure 2 and Figure 3 shown, a plurality of winding discs 200 and a plurality of partition discs 300 are both provided with second through holes 500 at the same position. The second through holes 500 are provided on the first splicing plate 210 and close to the position of the first outer arc, and the second through holes 500 are provided on the partition disc 300 and close to the outer circumferential surface of the partition disc 300. A plurality of second through holes 500 are arranged at intervals along the circumferential direction of the winding disc 200, and a plurality of second through holes 500 are arranged at intervals along the circumferential direction of the partition disc 300.

[0057] The provision of the second through holes 500 realizes the weight reduction of the winding disc 200 and the partition disc 300, which not only facilitates the handling, disassembly and assembly of the operator, but also reduces the power required for the rotation of the rotating shaft 100, saving labor costs and power resources.

[0058] The second through holes 500 in this embodiment are set as a long-shaped structure with an arc-shaped edge. The second through holes 500 can also be set as other shapes, which are all within the protection scope of this application.

[0059] In some embodiments, both the first through-hole 400 and the second through-hole 500 are formed in the first splicing plate 210. Of course, for weight reduction, a third through-hole may also be formed in the second splicing plate 220, and a third through-hole is formed at a corresponding position on the partition disc 300, which can be set by those skilled in the art according to actual needs.

[0060] In some embodiments, as Figure 1 shown, a plurality of partition discs 300 include a first partition disc 310 and a second partition disc 320, and the diameter of the first partition disc 310 is greater than the diameter of the second partition disc 320. By providing partition discs 300 with different diameters, when the fibers are wound, the distance between the partition discs 300 and the outer circumferential surface of the winding disc 200 in the radial direction enables the preparation of NOL rings with different thicknesses. Here, the thickness refers to the distance between the outer circumferential surface and the inner circumferential surface of the NOL ring.

[0061] The use process of the above device for preparing NOL rings is as follows:

[0062] Step 1: Installation. Align the third groove 330 of the second partition disc 320 with the second limiting protrusion on the rotating shaft 100 to sleeved the partition disc 300 on the rotating shaft 100, and the partition disc 300 contacts the third limiting protrusion 110; assemble the first splicing plate 210 and the second splicing plate 220 to form the winding disc 200, and then align the second groove 2120 of the winding disc 200 with the second limiting protrusion on the rotating shaft 100 to sleeved the winding disc 200 on the rotating shaft 100; and so on until the last first partition disc 310 is installed; sleeve the gasket 130 on the rotating shaft 100, install the nut 120 to lock the winding disc 200 and the partition disc 300, so that the winding disc 200 and the partition disc 300 do not move axially on the rotating shaft 100; pass four fasteners through the four first through-holes 400 respectively to fix the winding disc 200 and the partition disc 300 together.

[0063] Step 2: Use. Fix one end of each fiber impregnated with binder on the outer circumferential surface of a winding disc 200, start the driving device, drive the rotating shaft 100 to rotate, and wind multiple fibers at the same time. After winding, cure to obtain an NOL ring.

[0064] Step 3: Demoulding. Knock off the second splicing plate 220 in the winding disc 200 with the NOL ring removed, and the four first splicing plates 210 will also disperse, completing the demoulding of the NOL ring.

[0065] The device for preparing NOL rings provided by this application can prepare multiple NOL rings with different thicknesses at one time using the single-ring winding method by setting partition discs 300 with different diameters; by setting the winding disc 200 to be a structure composed of a first splicing plate 210 and a second splicing plate 220, rapid demolding is achieved; by setting the second through hole 500, the weight reduction of the device is realized. The above designs improve the disassembly and assembly efficiency and demolding efficiency of the device, avoid damage to the NOL rings, and save costs.

[0066] The content described above can be implemented alone or in various combinations, and these variant ways are all within the protection scope of this application.

[0067] It should be noted that in the description of this application, the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0068] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0069] In this application, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. It can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0070] In this application, unless otherwise clearly specified and limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0071] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0072] Although the embodiments of this application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting this application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.

Claims

1. A device for preparing a NOL ring, characterized in that: The device for preparing the NOL ring comprises: Rotating shaft; A plurality of winding discs, each of which is formed by splicing a plurality of splicing plates along the circumferential direction; A plurality of partition discs, wherein the diameter of the partition discs is greater than the diameter of the winding disc, and the plurality of winding discs and the plurality of partition discs are alternately sleeved on the rotating shaft.

2. The device for preparing NOL rings according to claim 1, characterized in that: The plurality of splicing plates include a plurality of first splicing plates and at least one second splicing plate; The first splicing plate includes a first inner arc surface, a first outer arc surface and two first side surfaces, the first side surfaces connect the first inner arc surface and the first outer arc surface, the first inner arc surface abuts against the outer circumferential surface of the rotating shaft, and the first side surfaces are each provided with a first groove; The second splicing plate includes a second inner arc surface, a second outer arc surface and two second side surfaces, the second side surfaces connect the second inner arc surface and the second outer arc surface, the second side surfaces abut against the first side surfaces, and the second side surfaces are each provided with a first limiting protrusion adapted to the first groove.

3. The device for preparing NOL rings according to claim 2, characterized in that: The first outer arc surface and the second outer arc surface constitute the outer circumferential surface of the winding disk. In the radial direction of the winding disk, the length of the second side surface is smaller than the length of the first side surface.

4. The device for preparing NOL rings according to claim 2, characterized in that: A plurality of second limiting protrusions are arranged at intervals along the circumferential direction on the outer circumferential surface of the rotating shaft, and the plurality of second limiting protrusions all extend along the axial direction of the rotating shaft, and the plurality of second limiting protrusions correspond to the plurality of first splicing plates one by one; A second groove is formed on the first inner arc surface, and the second groove is adapted to fit with the second limiting protrusion.

5. The device for preparing NOL rings according to claim 4, characterized in that: A third groove matching with the second limiting protrusion is formed on the inner circumferential surface of the partition disc.

6. The device for preparing NOL rings according to claim 2, characterized in that: A first through hole is opened at the same position on the multiple winding disks and the multiple partition disks. A plurality of the first through holes are arranged at intervals along the circumference of the winding disk and the circumference of the partition disk. The first through hole extends along the axial direction of the rotating shaft. The first through hole cooperates with a fastener to fix the winding disk and the partition disk.

7. The device for preparing NOL rings according to claim 6, characterized in that: Second through holes are provided at the same position on the plurality of winding disks and the plurality of partitioning disks, and a plurality of the second through holes are arranged at intervals along the circumference of the winding disk and the circumference of the partitioning disk.

8. The device for preparing NOL rings according to claim 7, characterized in that: The first through hole and the second through hole are both opened on the first splicing plate.

9. The device for preparing NOL rings according to any one of claims 1 to 8, characterized in that: The plurality of partition discs include a first partition disc and a second partition disc, wherein a diameter of the first partition disc is greater than a diameter of the second partition disc.

10. The device for preparing NOL rings according to any one of claims 1 to 8, characterized in that: The rotating shaft is provided with a third limiting protrusion protruding from the outer circumferential surface of the rotating shaft, and the third limiting protrusion is used to limit the partition disc.

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