A bolt sorting and screening device

By combining electromagnet adsorption with vibrating screening, the safety hazards of material mixing in existing technologies have been solved, and the accurate classification of titanium alloy and carbon steel bolts has been achieved, improving the accuracy and safety of classification.

CN224423557UActive Publication Date: 2026-06-30NINGBO ZHANXIN AUTOMOTIVE TECH DEV CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
NINGBO ZHANXIN AUTOMOTIVE TECH DEV CO LTD
Filing Date
2025-07-10
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

In existing technologies, when bolts are classified solely by length, the mixing of titanium alloy and carbon steel bolts can lead to safety hazards, as the materials cannot be effectively distinguished.

Method used

By combining electromagnet adsorption with vibrating screening, carbon steel bolts are selectively adsorbed by electromagnets, while the vibrating screen is used for length grading, thus achieving precise classification of titanium alloys and carbon steel.

Benefits of technology

It enables precise classification of titanium alloy and carbon steel bolts, improving classification accuracy and assembly safety, reducing the risk of material jamming, and increasing sorting efficiency.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224423557U_ABST
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Abstract

This utility model relates to the field of bolt classification, specifically a bolt classification and screening device. It includes a vibrating screen, a guide cover and a distribution plate fixedly connected to the screen, with the distribution plate positioned at the discharge end. The distribution plate has evenly spaced distribution grooves. A classification box is located on one side of the screen, with a discharge port positioned above the screen. This utility model achieves precise classification of bolts made of titanium alloy and carbon steel by combining electromagnet adsorption with vibrating screening. This solves the safety hazards caused by material mixing when traditionally sorted only by length. When energized, the electromagnet selectively attracts carbon steel bolts, while titanium alloy bolts enter the vibrating screen through the discharge port for length classification. This dual screening mechanism significantly improves classification accuracy and assembly safety.
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Description

Technical Field

[0001] This utility model relates to the field of bolt classification technology, specifically to a bolt classification and screening device. Background Technology

[0002] Wheel bolts are high-strength bolts that connect vehicle wheels. The connection point is the wheel hub unit bearing. Generally, 10.9 grade bolts are used on microcars, while 12.9 grade bolts are used on medium and large vehicles. The structure of a wheel bolt generally consists of a knurled keyway, a threaded keyway, and a cap head. T-head wheel bolts are mostly grade 8.8 or higher, bearing the high torque connection between the car wheel hub and the axle. Double-headed wheel bolts are mostly grade 4.8 or higher, bearing the lighter torque connection between the car's outer wheel hub shell and the tire.

[0003] Chinese patent CN219135442U discloses a bolt feeding vibratory feeder. It uses a first screening mechanism and several sets of second screening mechanisms with screening plates of different lengths to classify bolts of different screw lengths. The discharge pipe can directly feed the screened bolts into the strip groove of the adjacent second screening mechanism. The bolt screw will slide directly through the strip groove for further screening, resulting in high working efficiency.

[0004] Although the above solution achieves the effect of classifying bolts of different lengths by using screening plates of different lengths, since the bolts used in automobile assembly are made of two materials, titanium alloy and carbon steel, simply classifying the bolts by length will result in unsuitable bolts being used on wheel hubs, which could pose a safety hazard.

[0005] Therefore, this utility model provides a bolt sorting and screening device to solve the above problems. Utility Model Content

[0006] In order to overcome the shortcomings of the prior art, this utility model provides a bolt sorting and screening device to solve the problem that bolts used in automobile assembly are made of two materials, titanium alloy and carbon steel. Simply sorting the bolts by length will result in bolts of unsuitable materials being used on wheel hubs, which may pose a safety hazard.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A bolt sorting and screening device includes a vibrating screen, a guide cover and a distribution plate fixedly connected to the vibrating screen, the distribution plate being located at the discharge end of the vibrating screen, the distribution plate having equally spaced distribution grooves, a sorting box being provided on one side of the vibrating screen, the sorting box having a discharge port located above the vibrating screen, a feed pipe being fixedly connected to the sorting box, an electromagnet being installed in the middle section of the sorting box, and a vibration component being provided on the sorting box for conveying bolts from the electromagnet to the discharge port.

[0009] Preferably, a guide plate matching the material distribution trough is fixedly connected to the vibrating screen plate, and the material distribution trough is located above the guide plate.

[0010] Preferably, a feed hood is fixedly connected to the feed pipe.

[0011] Preferably, the vibration assembly includes a mounting block fixedly connected to the bottom surface of the sorting box, and a vibration motor is mounted on the mounting block.

[0012] Preferably, the vibration assembly further includes a base plate disposed below the vibrating screening disc, two sets of connecting columns are fixedly connected to the base plate, a receiving plate is fixedly connected to the top of each connecting column, a high-pressure spring is fixedly connected to each receiving plate, connecting plates are fixedly connected to both sides of the sorting box, and the bottom surface of the connecting plate is fixedly connected to the high-pressure spring.

[0013] Preferably, the bottom surface of the base plate is provided with a transport groove.

[0014] The beneficial effects of this utility model are as follows:

[0015] 1. By combining electromagnet adsorption with vibrating screening, accurate classification of bolts made of titanium alloy and carbon steel is achieved, which solves the safety hazards caused by mixing materials when screening only by length in the traditional method. When the electromagnet is energized, it can selectively adsorb carbon steel bolts, while titanium alloy bolts enter the vibrating screening plate through the discharge port for length classification. The dual screening mechanism significantly improves the accuracy of classification and assembly safety.

[0016] 2. By setting the spiral structure of the material distribution plate and the adjustable material distribution trough, it can adapt to the screening needs of bolts of different lengths. With the help of the guide plate, it can achieve rapid diversion and collection. The vibration component ensures the stable conveying of bolts in the sorting box, reducing the risk of jamming. After the electromagnet is full, carbon steel bolts can be discharged centrally by powering off, which greatly improves sorting efficiency. Attached Figure Description

[0017] Figure 1 The three-dimensional representation of this utility model Figure 1 .

[0018] Figure 2 The three-dimensional representation of this utility model Figure 2 .

[0019] Figure 3 This is a cross-sectional view of the present invention.

[0020] Figure 4 This is a schematic diagram of the installation of the vibration component on the sorting box in this utility model.

[0021] In the diagram: 1. Vibrating screen disc; 2. Material distribution plate; 3. Material distribution trough; 4. Guide plate; 5. Guide cover; 6. Sorting box; 7. Discharge port; 8. Electromagnet; 9. Feed pipe; 10. Mounting block; 11. Vibrating motor; 12. Connecting plate; 13. High-pressure spring; 14. Support plate; 15. Connecting column; 16. Base plate; 17. Feed cover; 18. Transport trough. Detailed Implementation

[0022] The following will refer to the attached reference. Figures 1 to 4 The various embodiments of this utility model will be described in detail below. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this utility model and are not intended to limit the scope of protection of this utility model.

[0023] A bolt sorting and screening device includes a vibrating screen plate 1, a guide cover 5 and a material distribution plate 2 fixedly connected to the vibrating screen plate 1, and the material distribution plate 2 is located at the discharge end of the vibrating screen plate 1. The material distribution plate 2 has material distribution grooves 3 arranged at equal intervals, and the size of each material distribution groove 3 can be adjusted according to the actual needs of screening bolt length.

[0024] The guide cover 5 is located at the top of the vibrating screen plate 1. The bolts, after being rotated and arranged by the screening components in the vibrating screen plate 1, will be conveyed to the distribution plate 2 and rolled on the distribution plate 2 before being screened through the distribution trough 3. The distribution plate 2 is spiral-shaped, with the top end near the discharge end of the vibrating screen plate 1 and the bottom end near the distribution trough 3. The guide cover 5 can guide and limit the bolts on the distribution plate 2.

[0025] Among them, the vibrating screen plate 1 is fixedly connected with a guide plate 4 that matches the material distribution trough 3, and the material distribution trough 3 is located above the guide plate 4. The guide plate 4 guides the bolts that fall from the material distribution trough 3. The bolts that fall from the guide plate 4 can be collected by placing a collection box under the guide plate 4.

[0026] A sorting box 6 is provided on one side of the vibrating screen plate 1. The sorting box 6 has a discharge port 7, which is located above the vibrating screen plate 1. A feed pipe 9 is fixedly connected to the sorting box 6, and a feed cover 17 is fixedly connected to the feed pipe 9.

[0027] The feed hood 17 has a stepped structure that is wide at the top and narrow at the bottom, which can hold more bolts. The bolts can slide down the inside of the feed hood 17 into the inside of the feed pipe 9 and eventually fall into the sorting box 6.

[0028] An electromagnet 8 is installed in the middle section of the sorting box 6. The magnetic end of the electromagnet 8 is located inside the sorting box 6. When the bolt passes through the sorting box 6, the magnetic end of the electromagnet 8 can attract and screen the bolts made of carbon steel, while the bolts made of alloy will fall into the vibrating screen plate 1 through the discharge port 7 for screening according to their length and specifications. The sorting box 6 is equipped with a vibrating component for conveying the bolts from the electromagnet 8 to the discharge port 7.

[0029] In this embodiment, the vibration assembly includes a mounting block 10 fixedly connected to the bottom surface of the sorting box 6. A vibration motor 11 is mounted on the mounting block 10. The vibration force generated by the vibration motor 11 after it works will linearly transport the bolts inside the sorting box 6, that is, transport the bolts from below the feed pipe 9 to the discharge port 7.

[0030] In this embodiment, the vibration assembly also includes a base plate 16 disposed below the vibrating screening plate 1. Two sets of connecting columns 15 are fixedly connected to the base plate 16. A receiving plate 14 is fixedly connected to the top of each connecting column 15. A high-pressure spring 13 is fixedly connected to each receiving plate 14. Connecting plates 12 are fixedly connected to both sides of the sorting box 6, and the bottom surface of the connecting plate 12 is fixedly connected to the high-pressure spring 13.

[0031] The sorting box 6 is elastically supported by the elastic support structure formed by the connecting plate 12, the high-pressure spring 13 and the receiving plate 14, thereby improving the stability of the sorting box 6 under vibration feeding conditions.

[0032] The bottom surface of the base plate 16 is provided with a transport groove 18. The lifting part of the forklift is inserted into the transport groove 18 to lift and move the base plate 16. After a certain number of bolts are attracted to the electromagnet 8, the discharge port 7 is removed from the top of the vibrating screen plate 1. After the power supply to the electromagnet 8 is stopped, the attracted carbon steel bolts fall onto the inner bottom wall of the sorting box 6, thereby completing the sorting of carbon steel bolts and alloy bolts.

[0033] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] Furthermore, it should be noted that, in the description of this utility model, 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A bolt sorting apparatus comprising a vibrating sieve tray (1), characterized in that, The vibrating screen (1) is fixedly connected to a guide cover (5) and a material distribution plate (2), and the material distribution plate (2) is located at the discharge end of the vibrating screen (1). The material distribution plate (2) is provided with material distribution grooves (3) arranged at equal intervals. A classification box (6) is provided on one side of the vibrating screen (1). A discharge port (7) is provided on the classification box (6), and the discharge port (7) is located above the vibrating screen (1). A feed pipe (9) is fixedly connected to the classification box (6). An electromagnet (8) is installed in the middle section of the classification box (6). A vibration component for conveying bolts from the electromagnet (8) to the discharge port (7) is provided on the classification box (6).

2. A bolt sorting apparatus according to claim 1, wherein, The vibrating screen plate (1) is fixedly connected to a guide plate (4) that matches the material distribution trough (3), and the material distribution trough (3) is located above the guide plate (4).

3. The bolt sorting and screening equipment according to claim 1, characterized in that, A feed hood (17) is fixedly connected to the feed pipe (9).

4. The bolt sorting and screening equipment according to claim 1, characterized in that, The vibration assembly includes a mounting block (10) fixedly connected to the bottom surface of the sorting box (6), and a vibration motor (11) is mounted on the mounting block (10).

5. The bolt sorting and screening equipment according to claim 1, characterized in that, The vibration assembly also includes a base plate (16) disposed below the vibrating screen (1). Two sets of connecting columns (15) are fixedly connected to the base plate (16). A receiving plate (14) is fixedly connected to the top of each connecting column (15). A high-pressure spring (13) is fixedly connected to each receiving plate (14). Connecting plates (12) are fixedly connected to both sides of the sorting box (6), and the bottom surface of the connecting plate (12) is fixedly connected to the high-pressure spring (13).

6. The bolt sorting and screening equipment according to claim 5, characterized in that, The bottom surface of the base plate (16) is provided with a transport groove (18).