A mosquito-repellent incense filament outer shape inspection device and its detection method

Abstract

The present invention discloses a mosquito-repellent incense filament outer shape inspection device and its detection method. The inspection device includes a positioning base, a support body, and a locking member. Among them, a through stepped through-hole is formed in the center of the support body, and two detection grooves are provided in the upper part of the support body. The distance between the two detection grooves is equal to the distance between two filament support legs a. The groove width of the detection groove is larger than the filament diameter by s, and s is the filament diameter error range. The positioning base 1 includes a base, a positioning table, a positioning column, and a detection column that are fixedly connected in sequence from bottom to top. The diameter of the positioning column is smaller than the outer diameter of the filament disk b and smaller than the distance between the inner sides of the two filament support legs a. The diameter of the support hole is larger than the distance between the inner sides of the two filament support legs a. The present invention effectively improves the working efficiency of filament detection.

Description

Technical Field

[0001] The present invention relates to the technical field of filament detection, and particularly to a quick and convenient inspection device for the shape of mosquito coil-shaped filaments and a detection method thereof. Background Art

[0002] As a key emission part in fields such as electron guns and scanning electron microscopes, whether the shape and size of the filament are qualified plays a very important role in ensuring the consistency, accuracy, and controllability of the overall equipment. In certain specific situations, it is required that the filament diameter is relatively small, such as less than 1 mm. This results in low shape stiffness of the filament after forming, and traditional detection methods cannot be used to detect the shape and size of the filament. Only non-contact measurement methods such as optical imaging and laser measurement can be used, but these methods are often time-consuming and laborious, and the detection cost is relatively high. Therefore, an inspection device for the shape of mosquito coil-shaped filaments is needed to quickly and accurately inspect whether the shape of the mosquito coil-shaped filament is qualified. Summary of the Invention

[0003] The purpose of the present invention is to address the problem of time-consuming and laborious filament shape detection in the prior art, and to provide a quick and convenient inspection device for the shape of mosquito coil-shaped filaments.

[0004] On the other hand, the present invention provides a detection method for the above-mentioned inspection device for the shape of mosquito coil-shaped filaments.

[0005] The technical solution adopted to achieve the purpose of the present invention is as follows:

[0006] A quick and convenient inspection device for the shape of mosquito coil-shaped filaments, comprising a positioning base, a support body, and a locking member. Among them,

[0007] A through stepped through-hole is formed at the center of the support body. The stepped through-hole includes a positioning hole at the bottom and a support hole at the top. The aperture of the support hole is smaller than the aperture of the positioning hole. Two detection grooves are formed in the upper part of the support body. The detection grooves communicate with the positioning hole. The distance between the two detection grooves is equal to the distance between two filament support legs. The width of the detection groove is used to verify the filament diameter.

[0008] The positioning base includes a base, a positioning table, a positioning column, and a detection column fixedly connected in sequence from bottom to top. The base is fixedly assembled with the support body through the locking member. The positioning table is in clearance fit with the positioning hole, and the positioning column is in clearance fit with the support hole.

[0009] The diameter of the positioning post is smaller than the outer diameter of the filament disk surface and smaller than the distance between the inner sides of the two filament support legs. The diameter of the support hole is larger than the distance between the inner sides of the two filament support legs. A notch for avoiding the filament support legs is provided on the positioning post. The height of the positioning post is larger than the distance from the bottom of the filament support leg to the disk surface and larger than the depth of the detection groove. The outer diameter of the detection post is used to verify the central hole of the filament disk surface.

[0010] In the above technical solution, the groove width of the detection groove is larger than the filament diameter by s, where s is the error range of the filament diameter. The outer diameter of the detection post is larger than the diameter of the central hole of the filament disk surface by d, where d is the error range of the central hole diameter.

[0011] In the above technical solution, two detection grooves are arranged in parallel and symmetrically. The side opening of each detection groove is located on the circumferential side surface of the support body, and the top opening of each detection groove is located on the top surface of the support body.

[0012] The base, the positioning platform, the positioning post and the detection post are all of cylindrical structures and are coaxially arranged.

[0013] In the above technical solution, s = 0.05 - 0.08 mm and d = 0.03 - 0.08 mm.

[0014] In the above technical solution, the clearance between the positioning platform and the positioning hole is not greater than 0.02 mm, and the clearance between the positioning post and the support hole is not greater than 0.02 mm.

[0015] In the above technical solution, the diameter of the positioning platform 1-2 is 0.01 - 0.02 mm smaller than the diameter of the positioning hole 2-1. The height of the positioning platform is 1 - 2 mm smaller than the depth of the positioning hole. The diameter of the support hole is 2 - 5 mm larger than the outer distance between the filament support legs.

[0016] In the above technical solution, the locking member is a locking screw. A threaded through hole matching the locking screw is provided on the base. An upper threaded hole matching the locking screw is provided at the bottom of the support body. The upper threaded hole and the threaded through hole are arranged vertically corresponding to each other.

[0017] In the above technical solution, two locking screws, upper threaded holes and threaded through holes are correspondingly provided, forming two sets of locking parts. The two sets of locking parts are symmetrically arranged with respect to the center of the positioning base to ensure the stability of locking.

[0018] On the other hand of the present invention, the detection method of the mosquito coil-shaped filament appearance inspection device includes the following steps:

[0019] Step 1, use the locking member to tightly assemble the positioning base and the support body to form the overall inspection device;

[0020] Step 2: Insert the two support legs of the filament to be inspected into the detection slots on one side of the support body respectively. If the support legs can enter the detection slots, it indicates that the filament diameter is qualified; otherwise, the filament diameter is unqualified.

[0021] Step 3: Then hold the filament by hand and move the filament towards the center of the whole inspection device. If the filament to be inspected can move smoothly to the center of the inspection device, it indicates that the distance between the support legs of the filament to be inspected is qualified; otherwise, the distance between the support legs of the filament to be inspected is unqualified.

[0022] Step 4: After the filament reaches the center position of the whole inspection device, put down the filament. If the filament can fall freely and the detection column can pass through the central hole of the filament disk, it indicates that the inspection of the filament disk size is qualified and the filament inspection is qualified.

[0023] Step 5: Remove the filament from the whole inspection device. When removing, invert the inspection device and the filament will fall off.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] 1. The present invention realizes the detection of the distance between the support legs a of the filament by relying on the positioning slots on the support body that are equidistant from the support legs a of the filament, realizes the detection of the inner hole diameter of the filament disk b by relying on the detection column on the positioning base, and realizes the detection of the relative position between the inner hole of the filament disk b and the support legs through the accurate cooperation of the support body and the positioning base, so as to quickly complete the detection of the filament outer dimension and quickly determine the qualification of the filament.

[0026] 2. Compared with other detection methods, the inspection method of the present invention is fast, simple, has high efficiency, and the filament will not be damaged during the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 is the structural diagram of the mosquito coil-shaped filament outer shape inspection device;

[0028] Figure 2 is the structural diagram of the positioning base;

[0029] Figure 3 is the structural diagram of the support body;

[0030] Figure 4 is the structural schematic diagram of the mosquito coil-shaped filament.

[0031] In the figure: 1 - positioning base, 2 - support body, 3 - locking part;

[0032] 1 - 1 base, 1 - 2 positioning table, 1 - 3 positioning column, 1 - 4 detection column, 1 - 5 notch, 1 - 6 threaded through hole;

[0033] 2 - 1 positioning hole, 2 - 2 support hole, 2 - 3 detection slot, 2 - 1 upper threaded hole.

[0034] a - filament support leg, b - filament disk surface, m - central hole. Detailed implementation mode

[0035] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] Embodiment 1

[0037] A quick and convenient inspection device for the shape of a mosquito coil-shaped filament, including a positioning base 1, a support body 2 and a locking member 3, wherein,

[0038] A through stepped through-hole is formed in the center of the support body 2. The stepped through-hole includes a positioning hole 2-1 at the bottom and a support hole 2-2 at the top. The aperture of the support hole 2-2 is smaller than the aperture of the positioning hole 2-1. Two detection grooves 2-3 are formed in the upper part of the support body 2. The detection grooves 2-3 communicate with the positioning hole 2-1. The distance between the two detection grooves 2-3 is equal to the distance between the two filament support legs a. The groove width of the detection groove 2-3 is s larger than the filament diameter, and s is the filament diameter error range;

[0039] The positioning base 1 includes a base 1-1, a positioning table 1-2, a positioning column 1-3 and a detection column 1-4 fixedly connected in sequence from bottom to top. The base 1-1 is fixedly assembled with the support body 2 through the locking member 3. The positioning table 1-2 is in clearance fit with the positioning hole 2-1. The positioning column 1-3 is in clearance fit with the support hole 2-2;

[0040] The diameter of the positioning column 1-3 is smaller than the outer diameter of the filament disk surface b and smaller than the distance between the inner sides of the two filament support legs a. The diameter of the support hole 2-2 is larger than the distance between the inner sides of the two filament support legs a. A notch 1-5 is formed in the positioning column 1-3 to avoid interference with the filament support leg a. The height of the positioning column 1-3 is greater than the distance from the bottom of the filament support leg a to the disk surface b and greater than the depth of the detection groove 2-3. The outer diameter of the detection column 1-4 is d larger than the diameter of the central hole m of the filament disk surface b, and d is the diameter error range of the central hole m.

[0041] The mosquito coil-shaped filament includes a filament disk surface b and two filament support legs a formed below the filament disk surface b. A central hole m is formed in the center of the filament disk surface b.

[0042] Preferably, the two detection grooves 2-3 are arranged in parallel and symmetrically. The side opening of each detection groove 2-3 is located on the circumferential side surface of the support body 2, and the top opening of each detection groove 2-3 is located on the top surface of the support body 2.

[0043] The detection method of the mosquito-repellent incense-shaped filament appearance inspection device includes the following steps:

[0044] Step 1: Use the locking member 3 to tightly assemble the positioning base 1 and the support body 2 to form the overall inspection device.

[0045] Step 2: Put the two support legs a of the filament to be inspected into the detection grooves 2-3 from one side of the support body 2 respectively. If the support legs can enter the detection grooves 2-3, it means that the filament diameter is qualified; otherwise, the filament diameter is unqualified.

[0046] Step 3: Then hold the filament by hand and move the filament towards the center of the overall inspection device. If the filament to be inspected can move smoothly to the center of the inspection device, it means that the distance between the support legs a of the filament to be inspected is qualified; otherwise, the distance between the support legs a of the filament to be inspected is unqualified.

[0047] Step 4: After the filament reaches the center position of the overall inspection device, put down the filament. If the filament can fall freely and the detection column 1-4 can pass through the central hole m of the filament disk b, it means that the size inspection of the filament disk b is qualified and the filament inspection is qualified.

[0048] Step 5: Remove the filament from the overall inspection device. When removing, invert the inspection device and the filament will fall off.

[0049] Embodiment 2

[0050] Preferably, the base 1-1, the positioning table 1-2, the positioning column 1-3 and the detection column 1-4 are all cylindrical structures and are coaxially arranged.

[0051] Preferably, s = 0.05 - 0.08 mm, d = 0.03 - 0.08 mm. The width of the detection groove is 0.05 - 0.08 mm larger than the filament diameter. When processing the detection groove 2-3, slow wire electrical discharge machining should be used to ensure that the roughness of the detection groove wall meets the requirements. The diameter of the detection column 1-4 is 0.03 - 0.08 mm smaller than the diameter of the central hole m of the mosquito-repellent incense-shaped filament to be detected. When the detection accuracy requirement is high, the diameter of the detection column 1-4 should be as close as possible to the designed size of the diameter of the filament central hole m.

[0052] Preferably, the clearance between the positioning table 1-2 and the positioning hole 2-1 is not greater than 0.02 mm, and the clearance between the positioning column 1-3 and the support hole 2-2 is not greater than 0.02 mm. To ensure the detection accuracy of the inspection device.

[0053] More preferably, the diameter of the positioning table 1-2 is 0.01 to 0.02 mm smaller than the diameter of the positioning hole 2-1, and the height of the positioning table 1-2 is 1 to 2 mm smaller than the depth of the positioning hole 2-1. The diameter of the support hole 2-2 is 2 to 5 mm larger than the outer spacing of the filament support legs a, and in order to improve the convenience of inspection, the aperture of the support hole should be taken as a larger value.

[0054] Both the positioning base 1 and the support body 2 are made of 304 stainless steel. The roughness of the surfaces of the positioning base 1 and the support body 2 that come into contact with the filament needs to be less than 0.8 um, including the roughness of the detection column 1-4 and the detection groove 2-3 needs to be less than 0.8 um. When conditions permit, the roughness should be as small as possible.

[0055] Embodiment 3

[0056] The positioning base 1 and the support body 2 are fastened together by a locking member 3 to ensure that the relative positions of the positioning base 1 and the support body 2 remain unchanged. The locking member can be a fastening screw, a locking sleeve, a locking clamp and other components.

[0057] Preferably, the locking member is a locking screw. A threaded through hole 1-6 matching the locking screw 3 is provided on the base 1-1, and an upper threaded hole 2-4 matching the locking screw is provided at the bottom of the support body 2. The upper threaded hole 2-4 and the threaded through hole 1-6 are arranged vertically corresponding to each other.

[0058] Furthermore, two locking screws, upper threaded holes 2-4 and threaded through holes 1-6 are correspondingly provided, forming two sets of locking parts. The two sets of locking parts are symmetrically arranged with respect to the center of the positioning base 1. To ensure the stability of locking.

[0059] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" etc. are used in the embodiments to describe the relationship of one element or feature shown in the figure with respect to another element or feature. It should be understood that in addition to the orientation shown in the figure, the spatial terms are intended to include different orientations during the use or operation of the device. For example, if the device in the figure is inverted, the element described as being "below" other elements or features will be positioned "above" other elements or features. Therefore, the exemplary term "lower" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used here can be interpreted accordingly.

[0060] Moreover, relational terms such as "first" and "second" etc. are only used to distinguish one component with the same name from another, and do not necessarily require or imply any such actual relationship or order between these components.

[0061] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A mosquito-repellent incense filament outer shape inspection device, characterized in that It includes a positioning base, a support body and a locking member. Among them, a through stepped through-hole is formed at the center of the support body. The stepped through-hole includes a positioning hole at the bottom and a support hole at the top. The aperture of the support hole is smaller than that of the support hole. Two detection grooves are formed in the upper part of the support body. The detection grooves communicate with the positioning hole. The distance between the two detection grooves is equal to the distance between the two filament support legs. The groove width of the detection groove is used to verify the filament diameter; the positioning base includes a base, a positioning table, a positioning column and a detection column fixedly connected in sequence from bottom to top. The base is fixedly assembled with the support body through a locking member. The positioning table is in clearance fit with the positioning hole, and the positioning column is in clearance fit with the support hole; the diameter of the positioning column is smaller than the outer diameter of the filament disk surface and smaller than the distance between the inner sides of the two filament support legs. The diameter of the support hole is larger than the distance between the inner sides of the two filament support legs. A notch for avoiding the filament support legs is formed on the positioning column. The height of the positioning column is greater than the distance from the bottom of the filament support leg to the disk surface and greater than the depth of the detection groove. The outer diameter of the detection column is used to verify the central hole of the filament disk surface; the two detection grooves are arranged in parallel and symmetrically. The side opening of each detection groove is located on the circumferential side surface of the support body, and the top opening of each detection groove is located on the top surface of the support body.

2. The mosquito-repellent incense filament shape inspection device according to claim 1, characterized in that, the groove width of the detection groove is s larger than the filament diameter, where s is the filament diameter error range. The outer diameter of the detection column is d larger than the diameter of the central hole of the filament disk surface, where d is the central hole diameter error range.

3. The mosquito-repellent incense-shaped filament profile inspection device according to claim 2, wherein s = 0.05 - 0.08 mm, d = 0.03 - 0.08 mm.

4. The mosquito-repellent incense-shaped filament profile inspection device according to claim 1, wherein the clearance between the positioning table and the positioning hole is not greater than 0.02 mm, and the clearance between the positioning column and the support hole is not greater than 0.02 mm.

5. The mosquito-repellent incense-shaped filament appearance inspection device according to claim 1, wherein, the diameter of the positioning table is 0.01 - 0.02 mm smaller than the diameter of the positioning hole, and the height of the positioning table is 1 - 2 mm smaller than the depth of the positioning hole.

6. The mosquito-repellent incense-shaped filament appearance inspection device according to claim 1, characterized in that, the diameter of the support hole is 2 - 5 mm larger than the outer distance between the filament support legs.

7. The mosquito-repellent incense filament outer shape inspection device according to claim 1, characterized in that the locking member is a locking screw. A threaded through-hole matching the locking screw is provided on the base, and an upper threaded hole matching the locking screw is provided at the bottom of the support body. The upper threaded hole and the threaded through-hole are arranged corresponding to each other up and down.

8. The mosquito-repellent incense-shaped filament appearance inspection device according to claim 7, characterized in that, two locking screws, upper threaded holes and threaded through-holes are correspondingly provided, forming two sets of locking parts. The two sets of locking parts are symmetrically arranged with respect to the center of the positioning base.

9. The mosquito-repellent incense filament outer shape inspection device according to claim 1, wherein, the base, the positioning table, the positioning column and the detection column are all cylindrical structures and are coaxially arranged.

10. The detection method of the mosquito-repellent incense-shaped filament appearance inspection device according to claim 1, characterized in that, It includes the following steps: Step 1, use the locking member to fixedly assemble the positioning base and the support body to form the whole inspection device; Step 2, put the two support legs of the filament to be inspected into the detection grooves from one side of the support body respectively. If the support legs can enter the detection grooves, it means that the filament diameter is qualified, otherwise the filament diameter is unqualified; Step 3, then hold the filament by hand and move the filament towards the center of the whole inspection device. If the filament to be inspected can move smoothly to the center of the inspection device, it means that the distance between the support legs of the filament to be inspected is qualified, otherwise, the distance between the support legs of the filament to be inspected is unqualified; Step 4, after the filament reaches the overall central position of the inspection device, lower the filament. If the filament can fall freely and the detection column can pass through the central hole of the filament disk surface, it indicates that the size of the filament disk surface is qualified and the filament is qualified for inspection; Step 5, remove the filament from the overall inspection device.

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