A clean core ring inspection tool for a range hood

Abstract

This invention provides a fixture for inspecting the core ring of a range hood, comprising: a support body; a support shaft assembly including a rotating shaft for mounting the core ring; and an inspection component disposed on one side of the support shaft assembly. The support shaft assembly and / or the inspection component are slidably mounted on the support body, and the inspection component has an inspection groove for the core ring to be inserted into on the side facing the support shaft assembly. This invention positions the core ring using the support shaft assembly. After the core ring is fixed on the rotating shaft, moving the support shaft assembly and / or the inspection component allows the core ring to be inserted into the inspection groove of the inspection component. Therefore, during the rotation of the core ring, the concentricity of the core ring can be determined by observing its rotation state, and the flatness of the core ring can be determined by using the inspection component as a reference. This allows for accurate and efficient inspection of the flatness and concentricity of the core ring, and is suitable for batch quality inspection of core rings for range hoods.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical parts quality inspection tooling technology, specifically, it relates to the field of range hood parts inspection technology, and in particular to a tooling for inspecting a clean core ring for range hoods. Background Technology

[0002] Cooking fumes typically contain oil droplets, and directly releasing these fumes into the environment will cause pollution. Existing range hoods usually have a filter ring installed inside the volute. When the range hood is working, the drive motor rotates the filter ring, using centrifugal force to separate the cooking fumes. The collected oil droplets eventually pass through the volute and collect in an oil cup. For example, Chinese invention patent application number CN201810089833.8 discloses a type of range hood.

[0003] The cleaning ring of a range hood is a key component ensuring the stability of the entire machine's operation. Its flatness, concentricity, and other parameters directly affect the performance after assembly. If the parameters of the cleaning ring do not meet the standards, problems such as vibration and abnormal noise may occur after installation, reducing the user experience and lifespan of the range hood.

[0004] Currently, there is no specific inspection tooling for the cleaning core ring used in range hoods. Traditional inspection methods mostly involve manually inspecting the cleaning core ring by placing it horizontally. This process is highly subjective, inefficient, and fails to meet the quality control requirements of mass production of range hoods.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] This utility model provides a tooling for inspecting the core ring of a range hood, aiming to solve the problem of not being able to accurately and efficiently inspect the parameters of the core ring in the mass production of range hoods.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is: a tooling for inspecting the core ring of a range hood, comprising: Supporting entity; Support shaft assembly, including a rotating shaft for mounting the core ring; The inspection component is located on one side of the support shaft assembly; The support shaft assembly and / or inspection assembly are slidably mounted on the support body, and the inspection assembly has an inspection groove for the net core ring to be inserted on the side facing the support shaft assembly.

[0008] Furthermore, the inspection tank includes: The first inspection surface, perpendicular to the axis of rotation, comprises two parallel surfaces used to inspect the flatness of the core ring; and / or, The second inspection surface, parallel to the axis of the rotating shaft, is used to inspect the concentricity of the core ring.

[0009] Furthermore, the main support body is equipped with a slide rail structure that extends radially along the axis of rotation; The inspection assembly includes a slider, which is installed inside a slide rail structure, and an inspection slot is provided on the slider.

[0010] Furthermore, the slide rail structure includes two limiting blocks disposed on both sides of the slider and fixedly connected to the support body. The two limiting blocks are parallel to each other, and each of the two limiting blocks is provided with a first limiting part that bends and extends toward the slider. The first limiting part and the support body are spaced apart to form a limiting groove. The slider includes a slider body disposed between two first limiting parts, and second limiting parts protruding from both sides of the slider body and cooperating with limiting grooves.

[0011] Furthermore, the end of the first limiting part is fitted with the side of the slider body, and / or the end of the second limiting part is fitted with the limiting block.

[0012] Furthermore, each end of the slide rail structure is provided with a third limiting part for limiting the slider.

[0013] Furthermore, the support shaft assembly includes a base, and the rotating shaft is mounted on the base via bearings; The base is fixed to the support body, or it slides with the support body.

[0014] Furthermore, multiple bearings are provided between the rotating shaft and the base, and the multiple bearings are spaced apart along the axial direction of the rotating shaft.

[0015] Furthermore, the end of the rotating shaft is provided with a positioning structure for installing the core ring; the positioning structure includes an external thread adapted to the internal thread of the mounting part of the core ring, or the positioning structure includes: an insertion part for inserting into the mounting part of the core ring, a positioning pin for circumferential positioning of the core ring, and a limiting nut for axially limiting the core ring.

[0016] Furthermore, the support body includes a support surface extending in a vertical direction, and the support shaft assembly and inspection assembly are mounted on the support surface of the support body, with the axis of the rotating shaft perpendicular to the support surface.

[0017] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art.

[0018] 1. This utility model positions the core ring using a support shaft assembly. After the core ring is fixed on the rotating shaft, moving the support shaft assembly and / or the inspection assembly allows the core ring to be embedded in the inspection groove of the inspection assembly. Thus, during the rotation of the core ring, the concentricity of the core ring can be determined by observing its rotation state. The flatness of the core ring can be determined by using the inspection assembly as a reference. This allows for accurate and efficient inspection of the flatness and concentricity of the core ring, and is suitable for batch quality inspection of core rings for range hoods.

[0019] 2. This utility model utilizes a support body to support the support shaft assembly, and the support surface of the support body extends vertically, enabling vertical fixation of the core ring. This effectively avoids deviations in flatness inspection caused by gravity, improving the accuracy of inspection results. Furthermore, after fixing the core ring to the rotating shaft, tools such as calipers can be used to verify the verticality of the core ring, similarly avoiding the influence of gravity.

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0021] The accompanying drawings, as part of this utility model, are used to provide a further understanding of the present utility model. The illustrative embodiments and descriptions of the present utility model are used to explain the present utility model, but do not constitute an undue limitation of the present utility model. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the structure of the inspection fixture for the cleaning core ring of the range hood in this embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the core ring and the inspection fixture in an embodiment of this utility model; Figure 3 This is an embodiment of the present utility model. Figure 2 Sectional view at point AA; Figure 4 This is an embodiment of the present utility model. Figure 3 Enlarged view of point A in the middle; Figure 5 This is an embodiment of the present utility model. Figure 2 Sectional view at point BB.

[0022] Description of main components in the diagram: 1. Support body; 10. Support surface; 11. First support part; 111. Third limiting part; 12. Second support part; 13. Column; 2. Support shaft assembly; 21. Base; 22. Rotating shaft; 23. Bearing; 30. Inspection groove; 301. First inspection surface; 302. Second inspection surface; 31. Slide rail structure; 310. Limiting groove; 311. Limiting block; 312. First limiting part; 32. Slider; 321. Slider body; 322. Second limiting part; 41. First pin; 42. First bolt; 43. Second pin; 44. Second bolt; 5. Core ring; 51. Core ring body; 52. Mounting part.

[0023] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0025] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] like Figures 1 to 5 As shown in the embodiment of this utility model, a cleaning core ring inspection fixture for range hoods is introduced, which includes a support body 1, a support shaft assembly 2, and an inspection assembly.

[0028] The support body 1 serves as a fixed reference for the inspection fixture. The support shaft assembly 2 and the inspection component are mounted on the support body 1. The support shaft assembly 2 includes a rotating shaft 22 for mounting the core ring 5. The inspection component is located on one side of the support shaft assembly 2, and the side of the inspection component facing the support shaft assembly 2 has an inspection groove 30 for the core ring 5 to be inserted. The support shaft assembly 2 and / or the inspection component are slidably engaged with the support body 1.

[0029] In use, first move the support shaft assembly 2 and / or the inspection assembly away from each other, so that the inspection fixture has enough space to install the core ring 5, making it convenient for operators to install and remove the core ring 5. After installing the core ring 5 on the rotating shaft 22 of the support shaft assembly 2, the support shaft assembly 2 and / or the inspection assembly can be moved closer to each other, so that the core ring 5 is embedded in the inspection groove 30.

[0030] Specifically, the core ring 5 is positioned by the support shaft assembly 2. After the core ring 5 is fixed on the rotating shaft 22, moving the support shaft assembly 2 and / or the inspection assembly allows the core ring 5 to be embedded in the inspection groove 30 of the inspection assembly. Thus, during the rotation of the core ring 5, the concentricity of the core ring 5 can be judged by observing its rotation state. The flatness of the core ring 5 can be judged by using the inspection assembly as a reference. The flatness and concentricity of the core ring 5 can be accurately and efficiently inspected, which is suitable for batch quality inspection of the core ring 5 of range hoods.

[0031] In this embodiment, the core ring 5 includes a mounting part 52 and a core ring body 51, and the core ring body 51 is fixedly mounted on the mounting part 52.

[0032] In some specific embodiments, the outer peripheral wall of the mounting part 52 is provided with outwardly protruding radial protrusions, the core ring body 51 is a circular mesh structure, the core ring body 51 is provided with a central hole in the middle, the central hole is used to fit with the mounting part 52, the core ring body 51 is provided with a ring of rivet holes around the central hole, the radial protrusion is provided with a plurality of rivets corresponding one-to-one with each rivet hole, and the radial protrusion is fixedly connected to the core ring body 51 by rivets.

[0033] In some possible embodiments, after the core ring 5 is fixed on the rotating shaft 22, the operator can determine the concentricity of the core ring 5 by observing the rotation state of the shaft during its rotation. Specifically, the concentricity of the core ring 5 is checked by observing whether there is any wobbling or shaking on the shaft. If there is no wobbling or shaking, the concentricity of the core ring 5 meets the standard. The shaft of the core ring 5 is specifically the mounting part 52 of the core ring 5.

[0034] The inspection groove 30 of the inspection component can cooperate with the support shaft assembly 2 to inspect the flatness of the core ring 5. The inspection groove 30 has a first inspection surface 301 parallel to the extending direction of the core ring body 51. During the rotation of the core ring 5, if there is no friction between the core ring 5 and the inspection groove 30, specifically, if there is no friction between the core ring 5 and the first inspection surface 301 of the inspection groove 30, then the flatness of the core ring 5 meets the standard. In this embodiment, the groove wall of the inspection groove 30 constitutes the first inspection surface 301 of the inspection groove 30, and the extending direction of the first inspection surface 301 is perpendicular to the axis of the rotating shaft 22.

[0035] In some possible embodiments, the inspection groove 30 includes a first inspection surface 301 and a second inspection surface 302. The first inspection surface 301 is perpendicular to the axis of the rotating shaft 22 and includes two parallel surfaces, used to inspect the flatness of the core ring 5. The second inspection surface 302 is parallel to the axis of the rotating shaft 22 and used to inspect the concentricity of the core ring 5.

[0036] Specifically, the two opposing walls of the inspection groove 30 constitute the first inspection surface 301, and the bottom of the groove connected between the two walls constitutes the second inspection surface 302. The first inspection surface 301 is used to face the side of the core ring body 51, and the second inspection surface 302 is used to face the outer edge of the core ring body 51.

[0037] When in use, the concentricity of the core ring 5 can be verified by observing the change in the gap between the core ring 5 and the second inspection surface 302. Alternatively, the concentricity of the core ring 5 can be verified by whether there is friction between the core ring 5 and the second inspection surface 302.

[0038] In this embodiment, the size of the inspection groove 30 can be adjusted according to the requirements for the flatness of the core ring 5.

[0039] In this embodiment, the support shaft assembly 2 and the support body 1 can be configured to slide together, or the inspection assembly and the support body 1 can be configured to slide together.

[0040] In some specific embodiments, the distance between the support shaft assembly 2 and the inspection assembly is set according to the concentricity error range of the core ring 5, so that the difference between the distance between the second inspection surface 302 and the axis of the rotating shaft 22 and the radius of the core ring 5 falls within the concentricity error range. If there is no friction between the core ring 5 and the second inspection surface 302 during the rotation of the core ring 5, then the concentricity of the core ring 5 meets the standard.

[0041] In some specific embodiments, a window can be provided on the inspection component that penetrates the wall of the inspection groove 30, allowing the operator to observe the change in the gap between the outer edge of the core ring 5 and the second inspection surface 302 through the window.

[0042] Specifically, while maintaining the fit between the core ring 5 and the inspection groove 30, rotate the core ring 5 at a uniform speed and observe the change in the gap between the core ring 5 and the second inspection surface 302. If the gap between the core ring 5 and the second inspection surface 302 is uniform during rotation, without obvious wobbling or sudden changes in gap, it indicates that the concentricity of the core ring 5 meets the requirements. At the same time, the shaft part of the core ring 5 can be observed with the naked eye. If there is no wobbling or shaking during rotation, the concentricity is further verified to meet the standard.

[0043] In some specific embodiments, the support shaft assembly 2 is detachably mounted on the support body 1, and there is no relative sliding between the support shaft assembly 2 and the support body 1, ensuring the stability of the support and limiting of the core ring 5. The inspection component is slidably mounted on the support body 1.

[0044] Specifically, such as Figure 1 , Figure 2 and Figure 5 As shown, the support body 1 is provided with a slide rail structure 31 extending radially along the rotating shaft 22. The inspection component includes a slider 32, which is installed in the slide rail structure 31. The slide rail structure 31 defines the sliding path of the slider 32, and the inspection groove 30 is provided on the slider 32.

[0045] The slide rail structure 31 includes two limiting blocks 311 disposed on both sides of the slider 32 and fixedly connected to the support body 1. The two limiting blocks 311 are parallel to each other, and each of the two limiting blocks 311 is provided with a first limiting part 312 that bends and extends toward the slider 32. The first limiting part 312 and the support body 1 are spaced apart to form a limiting groove 310. The slider 32 includes a slider body 321 disposed between the two first limiting parts 312, and second limiting parts 322 protruding from both sides of the slider body 321 and cooperating with the limiting groove 310.

[0046] Specifically, the support body 1 includes a support surface 10 for mounting the support shaft assembly 2 and the inspection assembly, and the support surface 10 is a plane. The slide rail structure 31 is mounted on the support surface 10, and two limiting blocks 311 and their first limiting parts 312 are spliced ​​with the support surface 10 to form a groove with a vertical cross-section of C. The slider 32 has an overall T-shaped structure and is adapted to the internal shape of the slide rail structure 31.

[0047] In this embodiment, the end of the first limiting part 312 is in contact with the side of the slider body 321, and / or the end of the second limiting part 322 is in contact with the limiting block 311. This ensures that the slider 32 slides without shifting or wobbling.

[0048] Preferred, such as Figure 5As shown, two second limiting portions 322 are disposed near the first end of the slider body 321. The side of the second limiting portion 322 facing the support body 1 is coplanar with the end face of the first end of the slider body 321 and is in contact with the support surface 10 of the support body 1. At the same time, the side of the second limiting portion 322 away from the support body 1 is in contact with the first limiting portion 312, and the side of the second limiting portion 322 away from the slider body 321 is in contact with the inner side of the limiting block 311. The side of the first limiting portion 312 facing the slider body 321 is in contact with the slider body 321.

[0049] In this embodiment, the slide rail structure 31 is open at both ends, and the slider 32 is installed into the slide rail structure 31 from one end of the slide rail structure 31.

[0050] In some specific embodiments, the limiting block 311 is fixed to the support body 1 by a first pin 41 and a first bolt 42. At least two first pins 41 are provided. The first pins 41 are inserted into the support body 1 and the limiting block 311 to achieve pre-positioning. Then, the first bolt 42 passes through the limiting block 311 and is tightened on the support body 1 to fix the limiting block 311.

[0051] In this embodiment, a single limiting block 311 is fixed to the support body 1 by two first pins 41 and a first bolt 42, with the first bolt 42 disposed between the two first pins 41.

[0052] Preferably, in this embodiment, the slide rail structure 31 has a third positioning part 111 at each end for limiting the slider 32. The third positioning part is columnar and is inserted into the support body 1. The slider 32 includes a first position that abuts against the third positioning part near the first end of the slide rail structure 31, and a second position that abuts against the third positioning part near the second end of the slide rail structure 31.

[0053] In this embodiment, the first end of the slide rail structure 31 is the end of the slide rail structure 31 away from the support shaft assembly 2, and the second end of the slide rail structure 31 is the end of the slide rail structure 31 close to the support shaft assembly 2.

[0054] When slider 32 is in the first position, the distance between slider 32 and rotating shaft 22 is greater than the radius of core ring 5, which facilitates the operator to assemble and disassemble core ring 5. When slider 32 is in the second position, core ring body 51 is embedded in inspection groove 30 on slider 32, and a gap is left between the outer edge of core ring body 51 and the second inspection surface 302 of inspection groove 30.

[0055] In this embodiment, four third positioning parts are provided, and the four third positioning parts correspond to the ends of the two limiting grooves 310 respectively.

[0056] In this embodiment, the support shaft assembly 2 includes a base 21, which is fixed to the support body 1. A bearing 23 is provided on the base 21, and the rotating shaft 22 is mounted on the base 21 through the bearing 23.

[0057] Specifically, the base 21 has a cuboid structure and is fixed to the support body 1 by second pins 43 and second bolts 44. Four second bolts 44 are provided, each penetrating the base 21 from one of its rectangular faces away from the support body 1, near one of its four corners, and tightened onto the support body 1. At least two second pins 43 are provided, positioned near the edge of the rectangular face of the base 21 away from the support body 1, and are inserted into both the base 21 and the support body 1 for pre-positioning the base 21.

[0058] In this embodiment, a mounting opening is provided in the middle of the base 21, and a bearing 23 is embedded in the mounting opening. The rotating shaft 22 is mounted on the base 21 through the bearing 23. In some specific embodiments, the outer ring of the bearing 23 is interference-fitted with the mounting opening of the base 21, and the inner ring is interference-fitted with the rotating shaft 22.

[0059] Preferably, a plurality of bearings 23 are provided between the rotating shaft 22 and the base 21, and the plurality of bearings 23 are spaced apart along the axial direction of the rotating shaft 22. Specifically, the plurality of bearings 23 embedded in the base 21 are evenly distributed along the axial direction of the rotating shaft 22 to further ensure the concentricity stability of the rotating shaft 22 during rotation and improve the accuracy of the concentricity test of the core ring 5.

[0060] Preferably, the base 21 is detachably connected to the support body 1. When it is necessary to inspect net core rings 5 ​​of different specifications, the inspection fixture can be adapted to the inspection requirements of net core rings 5 ​​of various specifications by replacing the appropriate support shaft assembly 2 and / or slider 32, thereby improving the versatility of the fixture.

[0061] In this embodiment, the end of the rotating shaft 22 is provided with a positioning structure for installing the cleaning core ring 5. The positioning structure at the end of the rotating shaft 22 is the same as the structure on the motor shaft of the range hood for installing the cleaning core ring 5.

[0062] In some specific embodiments, the motor shaft is threadedly connected to the mounting portion 52 of the core ring 5.

[0063] In this embodiment, the positioning structure on the rotating shaft 22 includes an external thread adapted to the internal thread of the mounting part 52 of the core ring 5. When the parameters of the core ring 5 are checked, the core ring 5 is tightened onto the rotating shaft 22 through the mounting part 52.

[0064] In other specific embodiments, the mounting portion 52 of the core ring 5 is sleeved with the motor shaft, and is provided with an axial limiting structure and a circumferential limiting structure for locking the relative position between the core ring 5 and the motor shaft. For example, the motor shaft includes a mounting shaft section for mounting the core ring, the mounting shaft section is provided with a positioning pin and a limiting nut, the positioning pin passes radially through the mounting shaft section, and one end of the mounting portion is provided with a groove for engaging with the positioning pin. The mounting portion of the core ring is sleeved on the mounting shaft section, the groove of the mounting portion is sleeved on the positioning pin, and then the limiting nut is tightened on the mounting shaft section, abutting against the other end of the mounting portion, to prevent the core ring from detaching from the motor shaft.

[0065] In this embodiment, the positioning structure includes an insertion part for connecting with the mounting part 52, a positioning pin for circumferential positioning of the core ring 5, and a limiting nut for axial positioning of the core ring 5.

[0066] Specifically, the insertion part is coaxially arranged with the rotating shaft 22, and the outer diameter of the insertion part is equal to the inner diameter of the mounting part 52. A positioning pin is provided at the end of the insertion part near the base 21, penetrating the insertion part radially. A slot for engaging the positioning pin is provided at the end of the mounting part near the base 21. An external thread area is provided at the end of the insertion part away from the base 21. The limiting nut is tightened into the external thread area of ​​the insertion part, pressing the mounting part 52 against the positioning pin. Simultaneously, the slot engages with the positioning pin.

[0067] Preferably, in this embodiment, the support surface 10 of the support body 1 extends vertically, the support shaft assembly 2 and the inspection assembly are mounted on the support surface 10 of the support body 1, and the axis of the rotating shaft 22 is perpendicular to the support surface 10. This effectively avoids deviations in flatness inspection caused by gravity, improving the accuracy of the inspection results. Furthermore, after fixing the core ring 5 to the rotating shaft 22, the perpendicularity of the core ring 5 can be verified using tools such as calipers, similarly avoiding the influence of gravity.

[0068] In some specific embodiments, the support body 1 is made of rectangular metal sheet and includes a first support portion 11 extending vertically, a second support portion 12 extending horizontally, and a column 13 connecting the first support portion 11 and the second support portion 12. One side of the first support portion 11 is a flat support surface 10 extending vertically. This support surface 10 is used to install the support shaft assembly 2 and the inspection assembly, providing a foundation for the vertical fixation and accurate inspection of the core ring 5. The bottom of the second support portion 12 may be provided with anti-slip pads or fixing holes to facilitate the overall fixation of the tooling on the workbench and prevent displacement during the inspection process.

[0069] In this embodiment, the spacing between the two first inspection surfaces 301 is set according to the flatness requirements of the net core ring 5. For example, when the flatness allowable error is ±2mm, the spacing between the two first inspection surfaces 301 is 4mm.

[0070] When inspecting the core ring 5 using the inspection fixture, the core ring 5 to be inspected is fitted onto the insertion part of the rotating shaft 22. Circumferential positioning is achieved through the locating pin, and axial fixation is completed by tightening the limit nut, ensuring that the core ring 5 is coaxial with the rotating shaft 22 and has no relative displacement. At this time, the core ring 5 is in a vertical state, and its axis is perpendicular to the support surface 10 of the support body 1, effectively avoiding the influence of gravity on the flatness and perpendicularity inspection.

[0071] The flatness inspection method is as follows: push the slider 32 to slide along the slide rail structure 31 towards the core ring 5, so that the edge of the core ring 5 is embedded in the inspection groove 30, and the end face of the core ring 5 corresponds to the two first inspection surfaces 301; rotate the rotating shaft 22 to drive the core ring 5 to rotate synchronously, and observe the contact state between the core ring 5 and the first inspection surfaces 301: if there is no friction or jamming between the core ring 5 and the two first inspection surfaces 301 during the rotation, it indicates that the flatness of the core ring 5 meets the requirements; if friction or jamming occurs, it indicates that the flatness of the core ring 5 exceeds the allowable error.

[0072] The method for verifying concentricity is as follows: Keep the core ring 5 and the inspection groove 30 of the slider 32 in a fitted state, continue to rotate the shaft 22 at a constant speed, and observe the change in the gap between the core ring 5 and the second inspection surface 302: If the gap between the core ring 5 and the second inspection surface 302 is uniform during the rotation process, without obvious swaying or sudden gap changes, it indicates that the concentricity of the core ring 5 meets the requirements; at the same time, the shaft part of the core ring 5 can be observed with the naked eye. If there is no swaying or shaking during rotation, the concentricity is further verified to meet the standard.

[0073] In this embodiment, the window is located on the side of the slider body away from the support surface, and the window extends through the groove wall of the inspection groove from the side of the slider body away from the support surface. The side of the window away from the support shaft assembly is flush with the second inspection surface.

[0074] The method for checking the verticality is as follows: After the core ring 5 is vertically fixed, use calipers to measure the vertical distance between the end face of the core ring 5 and the support surface 10 of the support body 1. Select multiple measurement points evenly along the circumference of the core ring 5. If the difference in distance between multiple measurement points is within the allowable error range (e.g., ±0.5mm), it indicates that the verticality of the core ring 5 meets the requirements.

[0075] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. The implementation schemes in the above embodiments can be further combined or replaced. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A tooling for inspecting the core ring of a range hood, characterized in that, include: Supporting main body (1); Support shaft assembly (2), including a rotating shaft (22) for mounting the core ring (5); The inspection component is located on one side of the support shaft assembly (2); The support shaft assembly (2) and / or inspection assembly are slidably disposed on the support body (1), and the inspection assembly is provided with an inspection groove (30) for the core ring (5) to be inserted on the side facing the support shaft assembly (2).

2. The inspection fixture for the clean core ring of a range hood according to claim 1, characterized in that, Inspection slot (30) includes: The first inspection surface (301), perpendicular to the axis of the rotating shaft (22), comprises two parallel surfaces used to inspect the flatness of the core ring (5); and / or, The second inspection surface (302) is parallel to the axis of the rotating shaft (22) and is used to inspect the concentricity of the core ring (5).

3. The inspection fixture for the clean core ring of a range hood according to claim 1 or 2, characterized in that, The support body (1) is provided with a slide rail structure (31) extending radially along the pivot (22); The inspection assembly includes a slider (32), which is installed inside the slide rail structure (31), and an inspection groove (30) is provided on the slider (32).

4. The inspection fixture for the clean core ring of a range hood according to claim 3, characterized in that, The slide rail structure (31) includes two limiting blocks (311) disposed on both sides of the slider (32) and fixedly connected to the support body (1). The two limiting blocks (311) are parallel to each other, and each of the two limiting blocks (311) is provided with a first limiting part (312) that bends and extends toward the slider (32). The first limiting part (312) and the support body (1) are spaced apart to form a limiting groove (310). The slider (32) includes a slider body (321) disposed between two first limiting parts (312) and a second limiting part (322) protruding from both sides of the slider body (321) and cooperating with the limiting groove (310).

5. The inspection fixture for the clean core ring of a range hood according to claim 4, characterized in that, The end of the first limiting part (312) is in contact with the side of the slider body (321), and / or the end of the second limiting part (322) is in contact with the limiting block (311).

6. The inspection fixture for the clean core ring of a range hood according to claim 3, characterized in that, The slide rail structure (31) has a third limiting part (111) at each end for limiting the slider (32).

7. The inspection fixture for the clean core ring of a range hood according to claim 1 or 2, characterized in that, The support shaft assembly (2) includes a base (21) and a rotating shaft (22) is mounted on the base (21) via a bearing (23); The base (21) is fixed on the support body (1), or it slides with the support body (1).

8. The inspection fixture for the clean core ring of a range hood according to claim 7, characterized in that, Multiple bearings (23) are provided between the rotating shaft (22) and the base (21), and the multiple bearings (23) are spaced apart along the axial direction of the rotating shaft (22).

9. The inspection fixture for the clean core ring of a range hood according to claim 7, characterized in that, The end of the rotating shaft (22) is provided with a positioning structure for installing the core ring (5); the positioning structure includes an external thread for adapting to the internal thread of the mounting part (52) of the core ring (5), or the positioning structure includes: an insertion part for inserting into the mounting part (52) of the core ring (5), a positioning pin for circumferential positioning of the core ring (5), and a limiting nut for axially limiting the core ring (5).

10. The inspection fixture for the clean core ring of a range hood according to claim 1 or 2, characterized in that, The support body (1) includes a support surface (10) extending in a vertical direction, a support shaft assembly (2) and an inspection assembly are mounted on the support surface (10) of the support body (1), and the axis of the rotating shaft (22) is perpendicular to the support surface (10).

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