Magnetic tile tensioning tool

Abstract

This invention provides a magnetic tile tensioning fixture, relating to the field of permanent magnet motor manufacturing technology. The magnetic tile tensioning fixture includes a base, a limiting ring disposed on the base, multiple tensioning components located inside the limiting ring, and a drive component that cooperates with the tensioning components. The multiple tensioning components are arranged circumferentially and form a radially guiding sliding fit with the base. The outer side of the tensioning components is used to support the magnetic tile. The drive component can move axially and converts the axial movement into radial tensioning force through a conical surface fit structure, causing the multiple tensioning components to expand radially synchronously, thereby driving the magnetic tile to conform to the inner wall of the rotor housing. An elastic element is provided between the limiting ring and the tensioning components to provide radial return and tension compensation, adapting to rotor housings with different inner diameters and achieving stable positioning and uniform fit of the magnetic tile during assembly.

Description

Technical Field

[0001] This invention relates to the field of permanent magnet motor manufacturing technology, and more specifically, to a magnetic tile tensioning fixture. Background Technology

[0002] In the manufacturing process of permanent magnet motor rotors, the bonding of magnetic tiles is one of the key assembly steps. This process typically involves first applying adhesive to the inner wall of the rotor housing, then arranging several arc-shaped magnetic tiles in a circumferential direction on a tensioning fixture, and using the fixture to provide radial support and positioning for the magnetic tiles. Subsequently, the rotor housing is fitted onto the outside of the magnetic tiles, allowing the magnetic tiles to bond and cure under tension, thereby forming a complete rotor magnetic circuit structure.

[0003] Existing magnetic tile tensioning and positioning fixtures generally suffer from poor structural adaptability during use. Most devices are custom-designed for specific rotor housing specifications, and when the inner diameter of the housing or the size of the magnetic tiles changes, the fixture structure often needs to be replaced or readjusted, thus limiting its applicability. Furthermore, existing technologies often rely on a single fixed structure or adsorption-based positioning method for the circumferential positioning and radial support of the magnetic tiles. This makes it difficult to achieve stable constraint and uniform force distribution of the magnetic tiles during assembly of different specifications, easily leading to inconsistent circumferential gaps or uneven adhesion after bonding, thereby affecting the rotor assembly quality. Therefore, how to achieve stable positioning and uniform adhesion of magnetic tiles within rotor housings of different sizes during the bonding process has become a pressing technical problem to be solved in this field. Summary of the Invention

[0004] The problem solved by this invention is how to achieve stable positioning and uniform bonding of magnetic tiles within rotor housings of different sizes during the bonding process.

[0005] To address the aforementioned problems, this invention provides a magnetic tile tensioning fixture that acts on a rotor housing. The magnetic tile tensioning fixture includes: a base, a limiting ring, a drive assembly, and multiple tensioning assemblies. The limiting ring is disposed on the base, and a limiting space is formed inside the limiting ring. Multiple tensioning assemblies are disposed within the limiting space and slidably connected to the base. Each tensioning assembly is arranged circumferentially, and a magnetic tile is provided on the surface of each tensioning assembly. The drive assembly cooperates with the multiple tensioning assemblies and, during axial movement, acts on the multiple tensioning assemblies through the outer surface of the drive assembly, causing the multiple tensioning assemblies to move synchronously radially, so that the magnetic tile, under the constraint of the limiting ring, adheres outward to the inner wall of the rotor housing. An elastic element is provided between the limiting ring and the tensioning assemblies to provide radial return and tension compensation under different rotor inner diameter conditions, so that the magnetic tile forms a fitted state adapted to the inner wall of the rotor housing.

[0006] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by setting a limiting ring, multiple radially moving tensioning components and a conical drive component, the sliding block can synchronously expand radially under the axial driving action of the conical drive component, thereby achieving uniform adhesion of the magnetic tile on the inner wall of the rotor housing; at the same time, the elastic component provides return and adaptation compensation, enabling the device to adapt to rotor housings with different inner diameters, while improving the stability of magnetic tile adhesion and assembly adaptability.

[0007] In one technical solution of the present invention, the tensioning component includes a sliding block; a guide groove is provided on the side of the base near the sliding block; the sliding block is slidably connected to the guide groove so that the sliding block can be moved controllably in the radial direction.

[0008] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by setting guide grooves to radially guide and constrain the sliding block, the sliding block maintains a stable radial linear motion trajectory during movement, thereby improving the motion consistency and stability of the tensioning component and preventing non-radial offset of the sliding block.

[0009] In one embodiment of the present invention, the driving component includes a tapered driving member having a tapered outer surface extending axially and forming a tapered surface mating structure with the inner side of a plurality of sliding blocks, so that the tapered driving member applies a radial component force to the sliding blocks when moving axially.

[0010] Compared with the existing technology, the technical effect achieved by adopting this technical solution is as follows: the tapered drive component forms a cooperation with the inner side of the sliding block through its tapered outer surface, so that the axial movement can be converted into radial force, thereby realizing the synchronous radial expansion of multiple sliding blocks by a single axial drive.

[0011] In one technical solution of the present invention, the conical drive member and multiple sliding blocks form a synchronous driving relationship through a conical surface mating structure, so that each sliding block moves synchronously in the radial direction under the action of the conical drive member.

[0012] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the synchronous radial movement of multiple sliding blocks is realized through the conical surface mating structure, so that the force on each sliding block is uniform and consistent, thereby improving the uniform adhesion of the magnetic tile on the inner wall of the rotor housing and reducing local uneven force.

[0013] In one technical solution of the present invention, the drive assembly includes an adjustment structure for adjusting the axial position of the conical drive member to change the axial relative position between the conical drive member and multiple sliding blocks, thereby adjusting the radial expansion of the sliding blocks to adapt to rotor housings with different inner diameters.

[0014] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by changing the axial position of the tapered drive component, the radial expansion of the sliding block can be altered, enabling the tooling to adapt to rotor housings with different inner diameters and improving the applicability of the device.

[0015] In one technical solution of the present invention, the elastic element includes a spring structure disposed in a countersunk hole on the sliding block; when the tapered drive moves away from the sliding block along the axial direction, the spring structure provides a radially inward restoring force to the sliding block, thereby realizing the automatic retraction of multiple sliding blocks.

[0016] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the spring structure provides a radially inward restoring force to the sliding block, so that the sliding block automatically retracts after the drive is released, which facilitates repeated assembly and improves assembly efficiency.

[0017] In one embodiment of the present invention, the elastic element further includes a buffer assembly connected to the side of the spring structure away from the sliding block, and a portion of the buffer assembly extends out of the countersunk hole to provide floating buffer for the sliding block.

[0018] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the buffer component buffers and transitions the effect of the spring structure, making the force on the sliding block more gradual during radial movement, thereby avoiding rigid impact on the magnetic tile and preventing the magnetic tile from breaking.

[0019] In one technical solution of the present invention, the limiting ring has an open structure and is provided with a locking adjustment component to adjust the size of the limiting space.

[0020] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by setting an open-type limiting ring and locking adjustment components, the size of the limiting space can be adjusted, thereby improving the device's adaptability to different specifications of magnetic tiles and rotor housings.

[0021] In one technical solution of the present invention, the tensioning component further includes a pin structure, which is disposed between multiple sliding blocks to limit the deflection of the sliding blocks in the circumferential direction so that the sliding blocks can only slide in a straight line along the guide groove.

[0022] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: the pin structure restricts the circumferential degrees of freedom of multiple sliding blocks, so that the sliding blocks can only move radially in a straight line along the guide groove, reducing the fitting error caused by circumferential deflection.

[0023] In one technical solution of the present invention, at least one permanent magnet is provided on the inner side of the limiting ring. The permanent magnet is disposed in the inner ring of the limiting ring and is used to apply an adsorption force to the magnetic tile placed in the limiting space, so as to perform circumferential positioning of the magnetic tile during the initial assembly and tightening process.

[0024] Compared with existing technologies, the technical effects achieved by adopting this technical solution are as follows: by setting permanent magnets to apply an attraction force to the magnetic tiles, the magnetic tiles maintain a stable circumferential position during initial placement and tensioning, reducing the possibility of the magnetic tiles tipping over or shifting during the assembly stage.

[0025] In summary, the above-mentioned technical solutions of this application can have one or more of the following advantages or beneficial effects: i) This application adjusts the axial position of the conical drive component by setting an adjustment structure, and provides radial return and tension compensation in conjunction with an elastic component, so that the tensioning assembly can adapt to rotor housings with different inner diameter specifications, improving the adaptability and reusability of the tooling. ii) This application drives multiple tensioning assemblies to move synchronously radially by setting a drive assembly, so that multiple magnetic tiles can synchronously adhere to the inner wall of the rotor housing, achieving uniform adhesion of the magnetic tiles and improving the consistency of magnetic tile assembly. iii) This application guides and constrains the movement trajectory of the sliding blocks by setting guide grooves, pin structures, and conical mating structures, so that multiple sliding blocks maintain synchronous and stable radial movement, improving the positioning accuracy and movement stability during the tensioning process. iv) This application limits, buffers, and assists in positioning the magnetic tiles by setting limit rings, buffers, and permanent magnets, so that the magnetic tiles maintain a stable position during assembly and tensioning, reducing the possibility of magnetic tiles shifting or tipping over. Attached Figure Description

[0026] Figure 1 This is a structural diagram of the magnetic tile tensioning device in the embodiments of this application; Figure 2 This is an exploded axial view of the magnetic tile tensioning fixture in the embodiments of this application; Figure 3 This is a cross-sectional view along the central axis of the magnetic tile tensioning device in the embodiments of this application.

[0027] Explanation of reference numerals in the attached figures: 100-Magnetic tile tensioning fixture; 110-Base; 111-Guide slide; 120-Limit ring; 121-Permanent magnet; 130-Tensioning assembly; 131-Sliding block; 132-Pin; 140-Drive assembly; 141-Conical drive component; 142-Adjusting structure; 142a-Drive bolt; 142b-Guide limit nut; 142c-Bottom anti-slip adjustment knob; 143-Limit bushing; 150-Magnetic tile; 160-Spring structure; 170-Buffer assembly. Detailed Implementation

[0028] The purpose of this invention is to provide a magnetic tile tensioning fixture for adapting to rotor housings with different inner diameters, thereby increasing the applicability range, while maintaining the stability of the magnetic tile and improving the uniform adhesion between the magnetic tile and the inner wall of the rotor housing.

[0029] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0030] See Figure 1 and Figure 2 As shown, Figure 1 This is a structural diagram of the magnetic tile tensioning device in the embodiments of this application; Figure 2 This is an exploded axial view of the magnetic tile tensioning fixture in this embodiment. The magnetic tile tensioning fixture 100 includes a base 110, a limiting ring 120, multiple tensioning components 130, and a drive assembly 140. The base 110 serves as the supporting foundation for the entire magnetic tile tensioning fixture 100. Six independent radial guide grooves 111 are evenly distributed circumferentially on the upper surface of the base 110. Each guide groove 111 extends radially to guide the tensioning components 130 to slide radially. The limiting ring 120 is positioned above the base 110, and a limiting space is formed inside the limiting ring 120. The multiple tensioning components 130 are disposed within the limiting space and are slidably connected to the base 110 via the guide grooves 111. Each tensioning component 130 is arranged circumferentially, and a magnetic tile 150 is provided on the surface of each tensioning component 130. In this embodiment, the number of tensioning components 130 is six sets, evenly arranged in a circumferential ring. The drive assembly 140 cooperates with multiple tensioning assemblies 130 and can act on the multiple tensioning assemblies 130 through the outer surface of the drive assembly 140 during axial movement, so that the multiple tensioning assemblies 130 move synchronously in the radial direction, so that the magnetic tile 150 is outwardly attached to the inner wall of the rotor housing under the constraint of the limiting ring 120.

[0031] Among them, an elastic element, namely a spring structure 160 and a buffer assembly 170, is provided between the limiting ring 120 and the tensioning assembly 130. This element is used to provide radial return and tension compensation under different rotor inner diameter conditions, so that the magnet 150 forms a fitted state that is adapted to the inner wall of the rotor housing.

[0032] Furthermore, the tensioning assembly 130 includes a sliding block 131, which is slidably connected to a guide groove 111 formed on the upper surface of the base 110, so that the sliding block 131 can only move controllably in the radial direction. Specifically, the lower end of the sliding block 131 is engaged in the corresponding guide groove 111 on the upper surface of the base 110 and forms a sliding fit therewith, ensuring that each sliding block 131 always maintains radial movement during the sliding process.

[0033] Furthermore, the drive assembly 140 includes a tapered drive member 141, which has a tapered outer surface extending axially and forms a tapered surface engagement structure with the inner side of a plurality of sliding blocks 131, so that the tapered drive member 141 applies a radial component force to the sliding blocks 131 when moving axially. Specifically, the inner surface of each sliding block 131 is an inclined surface, which is in contact with the outer tapered surface of the tapered drive member 141.

[0034] The conical drive member 141 and multiple sliding blocks 131 form a synchronous driving relationship through a conical surface mating structure, causing each sliding block 131 to move synchronously in the radial direction under the action of the conical drive member 141. Since all six sets of sliding blocks 131 are in contact with the outer conical surface of the same conical drive member 141, when the conical drive member 141 moves upward in the axial direction, the outer conical surface of the conical drive member 141 applies a force to the inner inclined surface of each sliding block 131. This force is decomposed into a radially outward component, which simultaneously pushes each sliding block 131 to slide outward synchronously.

[0035] The drive assembly 140 also includes an adjustment structure 142 for adjusting the axial position of the conical drive member 141. The adjustment structure 142 includes a drive bolt 142a, a guide nut 142b, and a bottom anti-slip adjustment knob 142c. The guide nut 142b is press-fitted into the center hole of the base 110. The drive bolt 142a passes through the guide nut 142b and is threaded onto it. The upper end of the drive bolt 142a is fixedly connected to the conical drive member 141, and the lower end is fixedly connected to the bottom anti-slip adjustment knob 142c. By turning the bottom anti-slip adjustment knob 142c, the operator causes the drive bolt 142a to move axially up and down under the constraint of the guide nut 142b, thereby adjusting the axial relative position between the conical drive member 141 and the multiple sliding blocks 131, and thus changing the radial expansion of each sliding block 131 to adapt to rotor housings with different inner diameters.

[0036] Preferably, the bottom anti-slip adjustment knob 142c is replaced with a small servo electric actuator, the output shaft of which is directly connected to the drive bolt 142a. An external PLC control system is used, with the tension stroke parameters for each model of magnetic tile 150 pre-loaded. During operation, the operator selects the corresponding product model on the PLC control panel, and the control system automatically controls the servo electric actuator to drive the conical drive component 141 upward to the preset stroke position, completing synchronous tensioning, and then holding the pressure for a preset time for curing. After curing, the system automatically controls the conical drive component 141 to move downward and retract. The remaining structure is the same as described above. This embodiment can be adapted to a fully automatic rotor assembly line, realizing one-button automatic tensioning, timed pressure holding, and automatic retraction.

[0037] Furthermore, the elastic element includes a spring structure 160, which is a compression spring disposed within the countersunk hole of the sliding block 131. When the tapered drive member 141 moves axially away from the sliding block 131, that is, when the tapered drive member 141 moves downward, the spring structure 160 provides a radially inward restoring force to the sliding block 131, thereby enabling the multiple sliding blocks 131 to automatically retract.

[0038] The elastic element also includes a buffer assembly 170, namely a flexible buffer pad, which is connected to the side of the spring structure 160 away from the sliding block, and part of the buffer assembly extends out of the countersunk hole to provide floating buffer for the sliding block 131. Specifically, the flexible buffer pad is connected to the outer end of the compression spring and partially extends out of the countersunk hole. When the sliding block 131 expands outward, the compression spring undergoes compression deformation to absorb part of the impact force, and the flexible buffer pad disperses the contact pressure, achieving double-layer elastic buffering.

[0039] Furthermore, the limiting ring 120 has an open structure and is equipped with a locking adjustment component to adjust the size of the limiting space. After loosening the locking screw, the inner diameter of the limiting ring 120 can be steplessly adjusted within a certain range to accommodate magnets 150 with different outer diameters; after tightening the locking screw, the inner diameter of the limiting ring 120 is fixed.

[0040] The inner ring of the limiting ring has equally spaced retaining edges, which are used to lock the outer arc side of the magnetic tile 150 when it is placed inside the limiting ring 120, thus achieving circumferential equally spaced positioning of the magnetic tile 150. When changing models, only the locking screw needs to be loosened and the inner diameter of the limiting ring 120 adjusted; no other parts need to be replaced.

[0041] Furthermore, the tensioning assembly 130 also includes a pin 132 structure, which is disposed between multiple sliding blocks 131 to limit the circumferential deflection of the sliding blocks 131, so that the sliding blocks 131 can only slide linearly along the guide groove 111. Specifically, the pins 132 are stainless steel round pins, preferably with a diameter of 2 mm, and there are 6 of them, which are fixedly installed on the upper end face of the tooling base 110. Each pin 132 is located in the gap between two adjacent sliding blocks 131. A small gap is maintained between the head of the pin 132 and the side of the adjacent sliding block 131, so that the sliding block 131 is not interfered with when sliding radially, while limiting the circumferential deflection of the sliding block 131.

[0042] Furthermore, at least one permanent magnet 121 is provided on the inner side of the limiting ring 120. The permanent magnet 121 is disposed at the inner ring edge of the limiting ring 120 and is used to apply an attractive force to the magnetic tile 150 placed in the limiting space, so as to circumferentially position the magnetic tile 150 during initial assembly and tightening. Specifically, the permanent magnet 121 is preferably a neodymium iron boron permanent magnet with specifications of The magnetic tile 150 is 5mm × 2mm and is embedded in the inner ring edge of the limiting ring 120. When the magnetic tile 150 is placed inside the limiting ring 120, the permanent magnet 121 generates a slight attraction force on the magnetic tile 150, so that the magnetic tile 150 is tightly attached to the edge of the limiting ring 120, thus preventing the magnetic tile 150 from tilting or moving around in the circumferential direction during the feeding and initial tensioning process.

[0043] Preferably, the magnetic tile tensioning fixture 100 further includes a fan blade limiting bushing 143, which is fitted onto the upper part of the conical drive component 141 to provide the operator with a visual reference for judging the positioning of the conical drive component 141. When the conical drive component 141 rises to the preset tensioning working position, the end face of the fan blade limiting bushing 143 is exactly flush with a certain fixed reference surface. The operator can visually observe and judge whether the cone core is in place, avoiding over-tensioning or under-tensioning.

[0044] The operation method of this tooling will be described in conjunction with the above embodiments. See [link to documentation]. Figure 3 This is a cross-sectional view along the central axis of the magnetic tile tensioning fixture in this embodiment of the application. The specific steps are as follows: First, based on the outer diameter of the magnetic tile 150 to be produced, loosen the locking screw at the opening of the limiting ring 120, adjust the inner diameter of the limiting ring 120 to match the outer diameter reference dimension of the magnetic tile 150, and then tighten the screw to fix the inner diameter of the limiting ring 120. Next, turn the bottom anti-slip adjustment knob 142c counterclockwise, causing the drive bolt 142a to move the conical drive component 141 axially downwards. The spring structure 160, relying on its elastic restoring force, pulls all the radial sliding blocks 131 synchronously towards the center along the guide groove 111, making the overall outer diameter of the fixture smaller than the inner diameter of the magnetic tile 150. Then, place multiple arc-shaped magnetic tiles 150 sequentially inside the limiting ring 120, so that the outer arc side of each magnetic tile 150 is respectively engaged in the equally spaced retaining edges of the inner ring of the limiting ring 120. The permanent magnet 121 generates a slight attractive force on the magnetic tile 150, keeping the magnetic tile 150 tightly against the retaining edge and maintaining a stable position. Then, the rotor housing is fitted onto the outside of the tooling. Turning the bottom anti-slip adjustment knob 142c clockwise causes the drive bolt 142a to move the conical drive member 141 axially upwards. The outer conical surface of the conical drive member 141 applies a normal force to the inner inclined surfaces of the six sets of radial sliding blocks 131, pushing each sliding block 131 to slide outwards synchronously along the radial guide groove 111. The spring structure 160 undergoes compressive deformation, and the buffer assembly 170 disperses the contact pressure, pushing the magnetic tile 150 outwards in a flexible buffering manner until the outer arc surface of the magnetic tile 150 is tightly fitted against the inner wall of the rotor housing. The operator determines whether the preset tensioning working position has been reached by observing whether the upper end face of the fan blade limiting bushing 143 is flush with the upper end face of the conical drive member 141. Afterwards, the tensioning state is maintained, allowing the adhesive between the magnetic tile 150 and the inner wall of the rotor housing to fully cure under the tensioning pressure. After the adhesive has cured, turn the bottom anti-slip adjustment knob 142c counterclockwise. The conical drive component 141 moves downward axially, and the spring structure 160 pulls all the sliding blocks 131 radially inward synchronously. The overall outer diameter of the fixture decreases. Remove the bonded rotor assembly from the fixture to complete unloading.

[0045] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A magnetic tile tensioning fixture, acting on a rotor housing, characterized in that, The magnetic tile tensioning fixture includes: Base (110); A limiting ring (120) is disposed on the base (110), and a limiting space is formed inside the limiting ring (120); Multiple tensioning components (130) are disposed within the limiting space and are slidably connected to the base (110). Each tensioning component (130) is arranged circumferentially, and the surface of the tensioning component (130) is provided with magnetic tiles (150). The drive assembly (140) cooperates with the plurality of tensioning assemblies (130) and is able to act on the plurality of tensioning assemblies (130) through the outer surface of the drive assembly (140) during axial movement, so that the plurality of tensioning assemblies (130) move synchronously in the radial direction, so that the magnetic tile (150) is outwardly attached to the inner wall of the rotor housing under the constraint of the limiting ring (120); Among them, an elastic element is provided between the limiting ring (120) and the tensioning assembly (130) to provide radial return and tension compensation under different rotor inner diameter conditions, so that the magnetic tile (150) forms a fitting state that is adapted to the inner wall of the rotor housing.

2. The magnetic tile tensioning fixture according to claim 1, characterized in that, The tensioning assembly (130) includes a sliding block (131); The base (110) has a guide groove (111) on the side near the sliding block (131). The sliding block (131) is slidably connected to the guide groove (111) so that the sliding block (131) can be moved controllably in the radial direction.

3. The magnetic tile tensioning fixture according to claim 2, characterized in that, The drive assembly (140) includes a tapered drive member (141) having a tapered outer surface extending axially and forming a tapered surface mating structure with the inner side of a plurality of sliding blocks (131) so that the tapered drive member (141) applies a radial component force to the sliding blocks (131) when moving axially.

4. The magnetic tile tensioning fixture according to claim 3, characterized in that, The conical drive member (141) and the plurality of sliding blocks (131) form a synchronous drive relationship through a conical surface mating structure, so that each sliding block (131) moves synchronously in the radial direction under the action of the conical drive member (141).

5. The magnetic tile tensioning fixture according to claim 3, characterized in that, The drive assembly (140) includes an adjustment structure (142) for adjusting the axial position of the tapered drive member (141) to change the axial relative position between the tapered drive member (141) and the plurality of sliding blocks (131), thereby adjusting the radial expansion of the sliding blocks (131) to accommodate rotor housings with different inner diameters.

6. The magnetic tile tensioning fixture according to claim 3, characterized in that, The elastic element includes a spring structure (160) disposed in a countersunk hole on the sliding block (131); When the conical drive (141) moves axially away from the sliding block (131), the spring structure (160) provides a radially inward restoring force to the sliding block (131), thereby enabling the multiple sliding blocks (131) to automatically retract.

7. The magnetic tile tensioning fixture according to claim 6, characterized in that, The elastic element also includes a buffer assembly (170) connected to the side of the spring structure (160) away from the sliding block (131), and a portion of the buffer assembly (170) extends out of the countersunk hole to provide floating buffer for the sliding block (131).

8. The magnetic tile tensioning fixture according to claim 1, characterized in that, The limiting ring (120) has an open structure and is equipped with a locking adjustment component to adjust the size of the limiting space.

9. The magnetic tile tensioning fixture according to claim 2, characterized in that, The tensioning assembly (130) also includes a pin (132) structure, which is disposed between a plurality of sliding blocks (131) to limit the deflection of the sliding blocks (131) in the circumferential direction so that the sliding blocks (131) can only slide in a straight line along the guide groove (111).

10. The magnetic tile tensioning fixture according to claim 1, characterized in that, At least one permanent magnet (121) is provided on the inner side of the limiting ring (120). The permanent magnet (121) is disposed in the inner ring of the limiting ring (120) and is used to apply an adsorption force to the magnetic tile (150) placed in the limiting space so as to circumferentially position the magnetic tile (150) during the initial assembly and tightening process.

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