Screening tool for hard alloy fine products and implementation method

Abstract

The invention discloses a screening tool for hard alloy fine products and a screening method for anti-skid studs, the screening tool comprises a vibrator and a screening device, the screening device comprises a first cover plate, a second cover plate and a screening plate, the second cover plate is arranged at the first preset height position below the first cover plate, and the screening plate is arranged below the second cover plate. The first cover plate is fixedly connected with the second cover plate, a first containing space is arranged below the second cover plate, the sieve plate is arranged between the first cover plate and the second cover plate, the second cover plate is fixedly connected with the vibrator, and a plurality of sieve holes with preset diameters are formed in the sieve plate. The first preset height is smaller than the length of the fine product, and the preset diameter is larger than or equal to the diameter of the fine product. According to the screening tool, by adjusting the first preset height and the preset diameter of the screening holes, the screening tool can automatically screen qualified products of fine products made of hard alloy, the labor cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cemented carbide production and processing, and particularly to a screening tool and an implementation method for fine cemented carbide products. Background Art

[0002] Cemented carbide is a high-hardness and high-wear-resistant material made from metal powder through powder metallurgy. Cemented carbide is usually used to make fine products, such as anti-slip nails, serrated products, and small tip products. Although cemented carbide has high hardness, it is relatively brittle and prone to adhesion during the sintering process. In the production of such fine products, the pressed blanks are extremely easy to break. If the broken products are selected manually, it is difficult, which increases the working intensity of workers and the selection efficiency is not high.

[0003] The above content is only for assisting in understanding the technical solution and does not represent an admission that the above content is the prior art. Summary of the Invention

[0004] The main purpose of the present invention is to solve the technical problem of low efficiency in manually selecting fine cemented carbide products.

[0005] In a first aspect, to achieve the above object, a screening tool for fine cemented carbide products is provided. The screening tool includes: a vibrator and a screening device. The screening device includes a first cover plate, a second cover plate, and a sieve plate. The second cover plate is disposed at a first preset height below the first cover plate. The first cover plate is fixedly connected to the second cover plate. A first accommodation space is disposed below the second cover plate. The sieve plate is disposed between the first cover plate and the second cover plate. The second cover plate is fixedly connected to the vibrator. The sieve plate has a plurality of sieve holes with a preset diameter. The first preset height is less than the length of the fine products. The preset diameter is greater than or equal to the diameter of the fine products.

[0006] In one embodiment, the vibrator further includes a rubber spring, and the rubber spring is disposed below the vibrator.

[0007] In one embodiment, the screening tool further includes: a base, and the base is fixedly connected to the vibrator through the rubber spring.

[0008] In one embodiment, the screening tool further includes: a loading port, a broken nail discharging port, and a qualified nail discharging port. The loading port is communicated with one side of the sieve plate. The qualified nail discharging port is communicated with the side of the sieve plate away from the loading port. The broken nail discharging port is communicated with the first accommodation space.

[0009] In one embodiment, the screening tool further includes: a broken nail box and a qualified nail box. The broken nail box is arranged below the outlet of the broken nail discharging opening, and the qualified nail box is arranged below the outlet of the qualified nail discharging opening.

[0010] In one embodiment, the side of the sieve plate close to the loading port is the highest side.

[0011] In one embodiment, a groove is arranged on the side of the sieve plate close to the loading port.

[0012] In one embodiment, the first accommodation space arranged under the second cover plate can be replaced with: the screening tool further includes a third cover plate. There is a hollow between the second cover plate and the third cover plate. A second accommodation space is arranged under the hollow of the third cover plate. The second cover plate is connected and fixed to the vibrator through the third cover plate.

[0013] In one embodiment, the vibrator includes: a body, a vibration coil box, a spring piece and a control switch. The vibration coil box includes a vibration coil and a magnet that provides an external magnetic field. The vibration coil box is installed in the body. The control switch is electrically connected to the vibration coil box. The body is connected and fixed to the screening device through the spring piece.

[0014] Second, the present invention also provides a method for screening anti-slip nails. The screening method includes:

[0015] Obtain the screening tool for the fine carbide products as described in the first aspect, and set the first preset height and the preset diameter;

[0016] Obtain anti-slip nails and put the anti-slip nails into the screening tool through the loading port;

[0017] Turn on the vibrator. The vibrator makes the broken nails fall into the first accommodation space through the sieve plate and then flow into the broken nail box through the broken nail discharging opening. The qualified anti-slip nails do not fall into the first accommodation space and flow on the sieve plate and fall into the qualified nail box through the qualified nail discharging opening.

[0018] The present invention can automatically screen the qualified products of the fine carbide products by adjusting the first preset height and the preset diameter of the sieve holes, reducing the labor cost and improving the production efficiency. Description of the Drawings

[0019] To more clearly illustrate the technical solutions of this embodiment, the following will briefly introduce the attached drawings required in the embodiment. It should be understood that the following attached drawings only show some embodiments of this, and thus should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other related attached drawings can also be obtained based on these attached drawings.

[0020] Figure 1 It is a schematic structural diagram of a screening tool in an embodiment;

[0021] Figure 2 It is a schematic structural diagram of a screening tool in an embodiment;

[0022] Figure 3 It is a top view schematic diagram of a sieve plate in an embodiment;

[0023] Figure 4 It is a cross-sectional schematic diagram of a sieve plate in an embodiment;

[0024] Figure 5 It is a schematic flow diagram of a screening method for a kind of anti-skid nail in an embodiment;

[0025] Main element symbol description:

[0026] 1. First cover plate; 2. Second cover plate; 3. Third cover plate; 4. Vibrator; 5. First accommodation space; 6. Rubber spring; 7. Base; 8. Loading port; 9. Broken nail discharging port; 10. Qualified nail discharging port; 11. Broken nail box; 12. Qualified nail box; 13. Gasket; 14. Vibration coil box; 15. Elastic sheet; 16. Control switch; 17. Sieve plate; 18. Sieve holes; 19. Second accommodation space. Specific implementation manners

[0027] To better understand the above technical solutions, the following will describe the exemplary embodiments of the present disclosure in more detail with reference to the attached drawings. Although the exemplary embodiments of the present disclosure are shown in the attached drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to be able to fully convey the scope of the present disclosure to those skilled in the art.

[0028] It should be understood that the specific embodiments described herein are only for explanation and not for limitation.

[0029] It should be noted that it is to be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are the orientation or positional relationships based on the coordinate system shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation on the present invention.

[0030] In this text, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected to", "fixed", etc. shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] In this text, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0032] This application provides a screening tool for hard alloy fine products. Referring to Figure 1 and Figure 3 , in an embodiment, the screening tool includes: a vibrator 4 and a screening device. The screening device includes a first cover plate 1, a second cover plate 2 and a sieve plate 17. The second cover plate 2 is arranged at a first preset height below the first cover plate 1. The first cover plate 1 is fixedly connected to the second cover plate 2. A first accommodating space 5 is arranged below the second cover plate 2. The sieve plate 17 is arranged between the first cover plate 1 and the second cover plate 2. The second cover plate 2 is fixedly connected to the vibrator 4. The sieve plate 17 has a plurality of sieve holes 18 with a preset diameter. The first preset height is less than the length of the fine products. The preset diameter is greater than or equal to the diameter of the fine products.

[0033] Among them, the fine cemented carbide products include anti-slip nails made of cemented carbide. The individual anti-slip nails are extremely small, with a single weight of only about 0.2 - 0.3 grams, and the size range is an outer diameter (diameter) of 2 - 3 mm and a height of 5 - 6 mm. During the production process, the pressed blanks are extremely prone to breakage, making it difficult for manual selection. Moreover, customers often complain about receiving broken nails in the finished goods. The fine cemented carbide products also include saw blade products and small tip products, and these products all have problems such as being prone to breakage, difficult for manual selection, and a high error rate.

[0034] In this embodiment, the screening tool can automatically screen the qualified products of the fine products made of cemented carbide by adjusting the first preset height and the preset diameter of the sieve holes 18, reducing the labor cost and improving the production efficiency.

[0035] In one of the embodiments, referring to Figure 1 and Figure 2 , the vibrator 4 further includes a rubber spring 6, and the rubber spring 6 is arranged under the vibrator 4.

[0036] Among them, the rubber spring 6 is a high-elasticity body, and the manufacturing material is ordinary rubber; the rubber spring 6 has a small elastic modulus and has a large elastic deformation under load, so as to absorb impact and vibration.

[0037] Specifically, the screening tool includes: a vibrator 4 and a screening device. The vibrator 4 includes a rubber spring 6. The screening device includes a first cover plate 1, a second cover plate 2, and a sieve plate 17. The second cover plate 2 is arranged at a position of the first preset height under the first cover plate 1. The first cover plate 1 and the second cover plate 2 are fixedly connected. A first accommodation space 5 is arranged under the second cover plate 2. The sieve plate 17 is arranged between the first cover plate 1 and the second cover plate 2. The second cover plate 2 is fixedly connected to the vibrator 4. The sieve plate 17 has a plurality of sieve holes 18 with a preset diameter. The first preset height is less than the length of the fine products, and the preset diameter is greater than or equal to the diameter of the fine products.

[0038] In this embodiment, by arranging the rubber spring 6 under the vibrator 4, it plays a role in damping the vibrating vibrator 4, and the rubber spring 6 has a long service life and low cost, improving the use efficiency of the screening tool.

[0039] In one of the embodiments, referring to Figure 1 and Figure 2 , the screening tool further includes: a base 7, and the base 7 is fixedly connected to the vibrator 4 through the rubber spring 6.

[0040] Specifically, the screening tool includes: a vibrator 4, a screening device, and a base 7. The vibrator 4 includes a rubber spring 6. The base 7 is fixedly connected to the vibrator 4 through the rubber spring 6. The screening device includes a first cover plate 1, a second cover plate 2, and a sieve plate 17. The second cover plate 2 is arranged at a first preset height below the first cover plate 1. The first cover plate 1 is fixedly connected to the second cover plate 2. A first accommodation space 5 is arranged below the second cover plate 2. The sieve plate 17 is arranged between the first cover plate 1 and the second cover plate 2. The second cover plate 2 is fixedly connected to the vibrator 4. The sieve plate 17 has a plurality of sieve holes 18 with a preset diameter. The first preset height is less than the length of the fine products. The preset diameter is greater than or equal to the diameter of the fine products.

[0041] In this embodiment, the base 7 and the vibrator 4 are fixedly connected through the rubber spring 6, which increases the height of the vibrator 4 and the screening device, making it more convenient to use the screening tool and improving work efficiency.

[0042] In one of the embodiments, referring to Figure 1 and Figure 2 , the screening tool further includes: a loading port 8, a broken nail discharging port 9, and a qualified nail discharging port 10. The loading port 8 is communicated with one side of the sieve plate 17. The qualified nail discharging port 10 is communicated with the side of the sieve plate 17 away from the loading port 8. The broken nail discharging port 9 is communicated with the first accommodation space 5.

[0043] Specifically, the screening tool for the hard alloy fine products includes: a vibrator 4 and a screening device. The screening device includes a first cover plate 1, a second cover plate 2, a sieve plate 17, a loading port 8, a broken nail discharging port 9, and a qualified nail discharging port 10. The second cover plate 2 is arranged at a first preset height below the first cover plate 1. The first cover plate 1 is fixedly connected to the second cover plate 2. A first accommodation space 5 is arranged below the second cover plate 2. The sieve plate 17 is arranged between the first cover plate 1 and the second cover plate 2. The second cover plate 2 is fixedly connected to the vibrator 4. The sieve plate 17 has a plurality of sieve holes 18 with a preset diameter. The loading port 8 is communicated with one side of the sieve plate 17. The qualified nail discharging port 10 is communicated with the side of the sieve plate 17 away from the loading port 8. The broken nail discharging port 9 is communicated with the first accommodation space 5. The first preset height is less than the length of the fine products. The preset diameter is greater than or equal to the diameter of the fine products.

[0044] In this embodiment, by providing the loading port 8, the broken nail discharging port 9, and the qualified nail discharging port, the screening of nails is made more convenient, improving work efficiency.

[0045] In one of the embodiments, referring to Figure 1 andFigure 2 The screening tool further includes: a broken nail box 11 and a qualified nail box 12. The broken nail box 11 is arranged below the outlet of the broken nail discharging opening 9, and the qualified nail box 12 is arranged below the outlet of the qualified nail discharging opening 10.

[0046] Specifically, the screening tool for the fine cemented carbide products includes a vibrator 4 and a screening device. The screening device includes a first cover plate 1, a second cover plate 2, a sieve plate 17, a loading opening 8, a broken nail discharging opening 9, a qualified nail discharging opening 10, a broken nail box 11 and a qualified nail box 12. The second cover plate 2 is arranged at a first preset height below the first cover plate 1. The first cover plate 1 and the second cover plate 2 are fixedly connected. A first accommodation space 5 is arranged below the second cover plate 2. The sieve plate 17 is arranged between the first cover plate 1 and the second cover plate 2. The second cover plate 2 is fixedly connected with the vibrator 4. The sieve plate 17 is provided with a plurality of sieve holes 18 with a preset diameter. The loading opening 8 is communicated with one side of the sieve plate 17. The qualified nail discharging opening 10 is communicated with the side of the sieve plate 17 far from the loading opening 8. The broken nail discharging opening 9 is communicated with the first accommodation space 5. The broken nail box 11 is arranged below the outlet of the broken nail discharging opening 9, and the qualified nail box 12 is arranged below the outlet of the qualified nail discharging opening 10. The first preset height is less than the length of the fine products, and the preset diameter is greater than or equal to the diameter of the fine products.

[0047] In this embodiment, by arranging the broken nail box 11 and the qualified nail box 12, the screening of nails is made more convenient, and the working efficiency is improved.

[0048] In one embodiment, the side of the sieve plate 17 close to the loading opening 8 is the highest side.

[0049] Specifically, the screening tool for the fine cemented carbide products includes a vibrator 4 and a screening device. The screening device includes a first cover plate 1, a second cover plate 2, a sieve plate 17, a loading opening 8, a broken nail discharging opening 9 and a qualified nail discharging opening 10. The second cover plate 2 is arranged at a first preset height below the first cover plate 1. The first cover plate 1 and the second cover plate 2 are fixedly connected. A first accommodation space 5 is arranged below the second cover plate 2. The sieve plate 17 is arranged between the first cover plate 1 and the second cover plate 2. The second cover plate 2 is fixedly connected with the vibrator 4. The sieve plate 17 is provided with a plurality of sieve holes 18 with a preset diameter. The loading opening 8 is communicated with one side of the sieve plate 17. The qualified nail discharging opening 10 is communicated with the side of the sieve plate 17 far from the loading opening 8. The broken nail discharging opening 9 is communicated with the first accommodation space 5. The side of the sieve plate 17 close to the loading opening 8 is the highest side. The first preset height is less than the length of the fine products, and the preset diameter is greater than or equal to the diameter of the fine products.

[0050] In this embodiment, the side of the sieve plate 17 close to the loading port 8 is set as the highest side, so that during the operation of the screening tool, the nails on the sieve plate 17 can flow from the side with a higher height to the side with a lower height, improving the working efficiency of the screening tool.

[0051] In one embodiment, referring to Figure 4 , a groove is provided on the side of the sieve plate 17 close to the loading port 8.

[0052] Specifically, the screening tool for the cemented carbide fine products includes a vibrator 4 and a screening device. The screening device includes a first cover plate 1, a second cover plate 2, a sieve plate 17, a loading port 8, a broken nail discharging port 9 and a qualified nail discharging port 10. The second cover plate 2 is arranged at a first preset height below the first cover plate 1, and the first cover plate 1 is fixedly connected to the second cover plate 2. A first accommodating space 5 is arranged below the second cover plate 2. The sieve plate 17 is arranged between the first cover plate 1 and the second cover plate 2. The second cover plate 2 is fixedly connected to the vibrator 4. The sieve plate 17 has a plurality of sieve holes 18 with a preset diameter. The loading port 8 communicates with one side of the sieve plate 17. The qualified nail discharging port 10 communicates with the side of the sieve plate 17 far from the loading port 8. The broken nail discharging port 9 communicates with the first accommodating space 5. A groove is provided on the side of the sieve plate 17 close to the loading port 8. The first preset height is less than the length of the fine products, and the preset diameter is greater than or equal to the diameter of the fine products.

[0053] In this embodiment, by providing a groove on the side of the sieve close to the loading port 8, the backflow of the nails to be screened is prevented, and the nails can move in a specified direction.

[0054] In one embodiment, the first accommodating space 5 arranged below the second cover plate 2 can be replaced with: the screening tool further includes a third cover plate 3. The middle of the second cover plate 2 and the third cover plate 3 is hollowed out. A second accommodating space 19 is arranged below the hollowed-out part of the third cover plate 3. The second cover plate 2 is fixedly connected to the vibrator 4 through the third cover plate 3.

[0055] Specifically, the screening tool for fine cemented carbide products includes a vibrator 4 and a screening device. The screening device includes a first cover plate 1, a second cover plate 2, a third cover plate 3, and a sieve plate 17. The second cover plate 2 is disposed at a first preset height below the first cover plate 1. The first cover plate 1 is fixedly connected to the second cover plate 2. There is a hollow between the second cover plate 2 and the third cover plate 3. A second accommodation space 19 is provided below the hollow of the third cover plate 3. The second cover plate 2 is fixedly connected to the vibrator 4 through the third cover plate 3. The sieve plate 17 is disposed between the first cover plate 1 and the second cover plate 2. The sieve plate 17 has a plurality of sieve holes 18 with a preset diameter. The first preset height is less than the length of the fine products. The preset diameter is greater than or equal to the diameter of the fine products.

[0056] In this embodiment, by providing the third cover plate 3, a hollow is provided between the second cover plate 2 and the third cover plate 3, and a second accommodation space 19 is provided below the hollow of the third cover plate 3 to place the broken nails that have been screened out. The four cover plates are fixedly connected to the vibrator 4 through the third cover plate 3, so that the broken nails can be smoothly screened and dropped from the sieve plate 17.

[0057] In one of the embodiments, referring to Figure 1 and Figure 2 , the second accommodation space 19 is in the shape of an inverted pyramid.

[0058] Specifically, the screening tool for fine cemented carbide products includes a vibrator 4 and a screening device. The screening device includes a first cover plate 1, a second cover plate 2, a third cover plate 3, and a sieve plate 17. The second cover plate 2 is disposed at a first preset height below the first cover plate 1. The first cover plate 1 is fixedly connected to the second cover plate 2. There is a hollow between the second cover plate 2 and the third cover plate 3. A second accommodation space 19 in the shape of an inverted pyramid is provided below the hollow of the third cover plate 3. The second cover plate 2 is fixedly connected to the vibrator 4 through the third cover plate 3. The sieve plate 17 is disposed between the first cover plate 1 and the second cover plate 2. The sieve plate 17 has a plurality of sieve holes 18 with a preset diameter. The first preset height is less than the length of the fine products. The preset diameter is greater than or equal to the diameter of the fine products.

[0059] In this embodiment, by setting the second accommodation space 19 in the shape of an inverted pyramid, the broken nails can flow out better, reducing the situation where the broken nails are left in the screening tool.

[0060] In one of the embodiments, the second accommodation space 19 is in the shape of an inverted cone.

[0061] Specifically, the screening tool for fine cemented carbide products includes a vibrator 4 and a screening device. The screening device includes a first cover plate 1, a second cover plate 2, a third cover plate 3, and a sieve plate 17. The second cover plate 2 is disposed at a first preset height below the first cover plate 1. The first cover plate 1 is fixedly connected to the second cover plate 2. There is a hollow space between the second cover plate 2 and the third cover plate 3. A second accommodating space 19 in the shape of an inverted cone is provided below the hollow of the third cover plate 3. The second cover plate 2 is fixedly connected to the vibrator 4 through the third cover plate 3. The sieve plate 17 is disposed between the first cover plate 1 and the second cover plate 2. The sieve plate 17 has a plurality of sieve holes 18 with a preset diameter. The first preset height is less than the length of the fine products, and the preset diameter is greater than or equal to the diameter of the fine products.

[0062] In this embodiment, by setting the second accommodating space 19 in the shape of an inverted cone, the broken nails can flow out better, reducing the situation of broken nails remaining in the screening tool.

[0063] In one of the embodiments, referring to Figure 2 , a gasket 13 with a second preset height is disposed between the second cover plate 2 and the third cover plate 3.

[0064] Specifically, the screening tool for fine cemented carbide products includes a vibrator 4 and a screening device. The screening device includes a first cover plate 1, a second cover plate 2, a third cover plate 3, and a sieve plate 17. The second cover plate 2 is disposed at a first preset height below the first cover plate 1. The first cover plate 1 is fixedly connected to the second cover plate 2. There is a hollow space between the second cover plate 2 and the third cover plate 3. A second accommodating space 19 is provided below the hollow of the third cover plate 3. The second cover plate 2 is fixedly connected to the vibrator 4 through the third cover plate 3. A gasket 13 with a second preset height is disposed between the second cover plate 2 and the third cover plate 3. The sieve plate 17 is disposed between the first cover plate 1 and the second cover plate 2. The sieve plate 17 has a plurality of sieve holes 18 with a preset diameter. The first preset height is less than the length of the fine products, and the preset diameter is greater than or equal to the diameter of the fine products.

[0065] In this embodiment, by disposing a gasket 13 with a second preset height between the second cover plate 2 and the third cover plate 3, there is more space for the screened broken nails to fall from the sieve plate 17.

[0066] In one of the embodiments, referring to Figure 1 and Figure 2 , a gasket 13 with a first preset height is disposed between the first cover plate 1 and the second cover plate 2.

[0067] Specifically, the screening tool includes: a vibrator 4 and a screening device, the screening device includes a first cover plate 1, a second cover plate 2 and a sieve plate 17, a gasket 13 of a first preset height is arranged between the first cover plate 1 and the second cover plate 2, the first cover plate 1 and the second cover plate 2 are connected and fixed, a first accommodating space 5 is arranged under the second cover plate 2, the sieve plate 17 is arranged between the first cover plate 1 and the second cover plate 2, the second cover plate 2 is connected and fixed to the vibrator 4, and a plurality of sieve holes 18 of a preset diameter are provided on the sieve plate 17, the first preset height is less than the length of the fine product, and the preset diameter is greater than or equal to the diameter of the fine product.

[0068] In this embodiment, by setting a preset height between the first cover plate 1 and the second cover plate 2, when the screening tool screens different products, gaskets 13 of different heights can be selected according to the lengths of different products and placed between the first cover plate 1 and the second cover plate 2, making the use of the screening tool more flexible.

[0069] In one embodiment, the first preset height is less than 6 mm.

[0070] Specifically, the screening tool includes: a vibrator 4 and a screening device, the screening device includes a first cover plate 1, a second cover plate 2 and a sieve plate 17, the second cover plate 2 is provided at a first preset height below the first cover plate 1, the first cover plate 1 is connected and fixed to the second cover plate 2, a first accommodating space 5 is provided under the second cover plate 2, the sieve plate 17 is provided between the first cover plate 1 and the second cover plate 2, the second cover plate 2 is connected and fixed to the vibrator 4, a plurality of sieve holes 18 of preset diameter are provided on the sieve plate 17, the first preset height is less than 6 mm, and the preset diameter is greater than or equal to the diameter of the fine product.

[0071] In this embodiment, the first preset height is set to be less than 6 mm, so that the screening tool can screen fine products with a length less than 6 mm and a preset diameter.

[0072] In one embodiment, the preset diameter of the sieve holes 18 of the sieve plate 17 is 2-3 mm.

[0073] The screening tool includes: a vibrator 4 and a screening device. The screening device includes a first cover plate 1, a second cover plate 2, and a sieve plate 17. The second cover plate 2 is disposed at a position of a first preset height below the first cover plate 1. The first cover plate 1 is fixedly connected to the second cover plate 2. A first accommodation space 5 is disposed below the second cover plate 2. The sieve plate 17 is disposed between the first cover plate 1 and the second cover plate 2. The second cover plate 2 is fixedly connected to the vibrator 4. The sieve plate 17 has a plurality of sieve holes 18 with a preset diameter. The first preset height is less than the length of the fine products. The preset diameter is 2-3 mm.

[0074] In this embodiment, the preset diameter of the sieve holes 18 of the sieve plate 17 is set to 2-3 mm, so that the screening tool can screen fine products with a length of the preset height and a diameter of 2-3 mm.

[0075] In one of the embodiments, referring to Figure 1 and Figure 2 , the vibrator 4 includes: a body, a vibration coil box 14, a shrapnel 15, and a control switch 16. The vibration coil box 14 includes a vibration coil and a magnet that provides an external magnetic field. The vibration coil box 14 is installed in the body. The control switch 16 is electrically connected to the vibration coil box 14. The body is fixedly connected to the screening device through the shrapnel 15.

[0076] Among them, the shrapnel 15 is a consumable item that will be worn during the use of the vibrator 4 and can be replaced; the control switch 16 is electrically connected to the vibration coil box 14, and the control switch 16 controls the vibration amplitude of the vibration coil box 14 by changing the frequency of different pulse signals.

[0077] Specifically, the screening tool for the cemented carbide fine products includes: a vibrator 4 and a screening device. The vibrator 4 includes: a body, a vibration coil box 14, a shrapnel 15, and a control switch 16. The vibration coil box 14 includes a vibration coil and a magnet that provides an external magnetic field. The vibration coil box 14 is installed in the body. The control switch 16 is electrically connected to the vibration coil box 14. The body is fixedly connected to the screening device through the shrapnel 15. The screening device includes a first cover plate 1, a second cover plate 2, and a sieve plate 17. The second cover plate 2 is disposed at a position of a first preset height below the first cover plate 1. The first cover plate 1 is fixedly connected to the second cover plate 2. A first accommodation space 5 is disposed below the second cover plate 2. The sieve plate 17 is disposed between the first cover plate 1 and the second cover plate 2. The second cover plate 2 is fixedly connected to the vibrator 4. The sieve plate 17 has a plurality of sieve holes 18 with a preset diameter. The first preset height is less than the length of the fine products. The preset diameter is greater than or equal to the diameter of the fine products.

[0078] As an embodiment, referring to Figure 2 and Figure 3 , the screening tool for the fine cemented carbide products includes: a vibrator 4, a screening device, and a base 7. The vibrator 4 includes: a body, a vibration coil box 14, a rubber spring 6, a shrapnel 15, and a control switch 16. The vibration coil box 14 includes a vibration coil and a magnet that provides an external magnetic field. The vibration coil box 14 is installed inside the body. The control switch 16 is electrically connected to the vibration coil box 14. The body is fixedly connected to the screening device through the shrapnel 15. The rubber spring 6 is arranged under the body. The vibrator 4 and the base 7 are fixedly connected through the rubber spring 6 and fastening bolts. The screening device includes a first cover plate 1, a second cover plate 2, a third cover plate 3, a sieve plate 17, a loading port 8, a broken nail discharge port 9, a qualified nail discharge port 10, a broken nail box 11, and a qualified nail box 12. The second cover plate 2 is arranged at a first preset height below the first cover plate 1. The first cover plate 1 and the second cover plate 2 are fixedly connected. There is a hollow between the second cover plate 2 and the third cover plate 3. A second accommodation space 19 is arranged below the hollow of the third cover plate 3. The second accommodation space 19 is in an inverted pyramid shape. The second cover plate 2 is fixedly connected to the vibrator 4 through the third cover plate 3. The sieve plate 17 is arranged between the first cover plate 1 and the second cover plate 2. The sieve plate 17 has a plurality of sieve holes 18 with a preset diameter. The loading port 8 communicates with one side of the sieve plate 17. The qualified nail discharge port 10 communicates with the side of the sieve plate 17 away from the loading port 8. The broken nail discharge port 9 communicates with the first accommodation space 5. The broken nail box 11 is arranged below the outlet of the broken nail discharge port 9. The qualified nail box 12 is arranged below the outlet of the qualified nail discharge port 10. The side of the sieve plate 17 close to the loading port 8 is the highest side and a groove is arranged on this side. A gasket 13 with a second preset height is arranged between the second cover plate 2 and the third cover plate 3. A gasket 13 with a first preset height is arranged between the first cover plate 1 and the second cover plate 2. The first preset height is less than the length of the fine products. The preset diameter is greater than or equal to the diameter of the fine products.

[0079] Wherein, a plurality of first through holes are arranged on the first cover plate 1, and a plurality of first screw holes are arranged on the second cover plate 2. The first through holes and the first threaded holes correspond to each other for a screw to pass through the first through hole and then be screwed into the first screw hole. A plurality of second through holes are arranged on the second cover plate 2, and a plurality of second screw holes are arranged on the third cover plate 3. The second through holes and the second threaded holes correspond to each other for a screw to pass through the second through hole and then be screwed into the second screw hole. Exemplarily, eight through holes are arranged on the first cover plate 1, eight first screw holes and four second through holes are arranged on the second cover plate 2, and four second screw holes are arranged on the third cover plate 3.

[0080] This application also provides a method for screening anti-slip nails. Referring to Figure 5 , in one embodiment, the screening method includes:

[0081] S101, obtain the screening tool for the fine cemented carbide products as described in any of the above embodiments, and set the first preset height and preset diameter;

[0082] S102, obtain anti-slip nails, and put the anti-slip nails into the screening tool through the loading port;

[0083] S103, turn on the vibrator. The vibrator makes the broken nails fall into the first accommodation space through the sieve plate and then flow into the broken nail box through the broken nail discharge port. The qualified anti-slip nails do not fall into the accommodation space and flow on the sieve plate and fall into the qualified nail box through the qualified nail discharge port.

[0084] Among them, the anti-slip nails are made of cemented carbide. The individual anti-slip nails are extremely small, with a single weight of only about 0.2 - 0.3 grams, and the size range is an outer diameter (diameter) of 2 - 3 mm and a height of 5 - 6 mm. During the production process, the pressed blanks are extremely easy to break, and it is difficult to select them manually. Moreover, customers often complain that there are broken nails in the received finished goods.

[0085] Specifically, obtain the screening tool for the fine cemented carbide products as described in any of the above embodiments of the claims, set the first preset height to 5.5 mm and the preset diameter to 3 mm, obtain anti-slip nails, put the anti-slip nails into the screening tool through the loading port, turn on the vibrator, and adjust the vibration amplitude of the vibrator to 15. The vibrator makes the broken nails fall into the first accommodation space through the sieve plate and then flow into the broken nail box through the broken nail discharge port. The qualified anti-slip nails do not fall into the first accommodation space and flow on the sieve plate and fall into the qualified nail box through the qualified nail discharge port

[0086] In this embodiment, by using the screening tool for the fine cemented carbide products as described in any of the above embodiments to automatically screen anti-slip nails, the labor cost is reduced and the production efficiency is improved.

[0087] The above are only preferred embodiments, and do not limit the scope of the patent of the present invention. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings, or directly or indirectly applied in other related technical fields, shall be equally included in the scope of patent protection of the present invention.

Claims

1. A screening tool for fine carbide products, characterized in that The screening tool for the fine cemented carbide products includes: a vibrator and a screening device. The screening device includes a first cover plate, a second cover plate and a sieve plate. The second cover plate is arranged at a first preset height below the first cover plate. The first cover plate and the second cover plate are fixedly connected. A first accommodating space is arranged below the second cover plate. The sieve plate is arranged between the first cover plate and the second cover plate. The second cover plate is fixedly connected with the vibrator. The sieve plate has a plurality of sieve holes with a preset diameter. The first preset height is less than the length of the fine products. The preset diameter is greater than or equal to the diameter of the fine products.

2. The screening tool according to claim 1, wherein The vibrator further includes a rubber spring, and the rubber spring is arranged below the vibrator.

3. The screening tool according to claim 2, wherein The screening tool further includes: a base, and the base is fixedly connected with the vibrator through the rubber spring.

4. The screening tool according to claim 1, wherein The screening tool further includes: a loading port, a broken nail discharging port and a qualified nail discharging port. The loading port is communicated with one side of the sieve plate. The qualified nail discharging port is communicated with the side of the sieve plate far away from the loading port. The broken nail discharging port is communicated with the first accommodating space.

5. The screening tool according to claim 4, wherein The screening tool further includes: a broken nail box and a qualified nail box. The broken nail box is arranged below the outlet of the broken nail discharging port. The qualified nail box is arranged below the outlet of the qualified nail discharging port.

6. The screening tool according to claim 4, wherein The side of the sieve plate close to the loading port is the highest side.

7. The screening tool according to claim 4, wherein A groove is arranged on one side of the sieve plate.

8. The screening tool according to claim 1, characterized in that The first accommodating space arranged below the second cover plate can be replaced with: the screening tool further includes a third cover plate. The middle parts of the second cover plate and the third cover plate are hollowed out. A second accommodating space is arranged below the hollowed part of the third cover plate. The second cover plate is fixedly connected with the vibrator through the third cover plate.

9. The screening tool according to claim 1, wherein The vibrator includes: a body, a vibration coil box, a shrapnel and a control switch. The vibration coil box includes a vibration coil and a magnet for providing an external magnetic field. The vibration coil box is installed in the body. The control switch is electrically connected with the vibration coil box. The body is fixedly connected with the screening device through the shrapnel.

10. A screening method for anti-slip nails, characterized in that, The screening method includes: Obtain the screening tool for the fine cemented carbide products as described in any one of claims 1-9, and set the first preset height and the preset diameter; Obtain anti-slip nails, and put the anti-slip nails into the screening tool through the loading port; Start the vibrator. The vibrator makes the broken nails fall into the first accommodating space through the sieve plate and then flow into the broken nail box through the broken nail discharging port. The qualified anti-slip nails do not fall into the first accommodating space and flow on the sieve plate and fall into the qualified nail box through the qualified nail discharging port.

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