Nut screening device

Abstract

The utility model provides a nut screening device, which relates to the technical field of nut screening and comprises a table top, a small belt wheel is rotatably connected to the top of the table top close to the middle, and a supporting plate is fixedly connected to the top of the small belt wheel. According to the nut screening device, when the nut screening device is used, unscreened nuts are poured into the third screening disc, then the first screening disc, the second screening disc and the third screening disc are driven to rotate through cooperation of the forward and reverse motor, the large belt wheel, the transmission belt, the small belt wheel, the supporting plate, the hexagonal column and the inserting sleeve, and at the moment, the nuts can be thrown in the third screening disc; and the nuts smaller than the first screening holes can fall into the second screening disc, and the nuts smaller than the second screening holes can fall into the first screening disc again, so that the screening operation of the nuts is completed, the overall structure is simple, the manufacturing cost is low, the nuts of different sizes can be automatically screened, and the problems that manual screening is low in efficiency and high in screening efficiency are solved. And time and labor are wasted.

Description

Technical Field

[0001] The utility model relates to the technical field of nut screening, in particular to a nut screening device. Background Art

[0002] Nuts are nuts, parts that are screwed together with bolts or screws for fastening. They are a must-have component for all manufacturing machinery. According to different materials, they are divided into several types, such as carbon steel, stainless steel, and non-ferrous metals. In traditional hardware and repair shops, nuts are usually screened manually. Although the cost is low, this screening method is inefficient, time-consuming, and labor-intensive, and the degree of automation is low. Therefore, in response to the above problems, we propose a new type of nut screening device. Summary of the invention

[0003] The purpose of the utility model is to solve the problem that in the prior art, nuts are usually screened manually in traditional hardware and repair shops. Although the cost is low, the screening efficiency is low, and it is time-consuming, labor-intensive, and has a low degree of automation. A nut screening device is proposed.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a nut screening device, comprising a table top, a small pulley is rotatably connected to the top of the table top near the middle, a support plate is fixedly connected to the top of the small pulley, a screening mechanism is arranged on the top of the support plate, the screening mechanism comprises a first screening plate, a second screening plate is placed on the top of the first screening plate, a third screening plate is placed on the top of the second screening plate, a plurality of first screening holes are opened on the inner bottom of the third screening plate, a plurality of second screening holes are opened on the top of the second screening plate, and the aperture of the first screening hole is larger than the aperture of the second screening hole.

[0005] Preferably, a forward and reverse motor is installed at the bottom of the table top, and the output end of the forward and reverse motor passes through the bottom of the table top and extends upward.

[0006] Preferably, the output ends of the forward and reverse motors are fixedly connected with a large pulley, and a transmission belt is transmission-connected between the inner surface walls of the large pulley and the small pulley.

[0007] Preferably, a hexagonal column is fixedly connected to the center of the top of the support plate, and sockets are fixedly connected to the inner bottoms of the first screening disc, the second screening disc and the third screening disc.

[0008] Preferably, the outer surface of the hexagonal column slides through the bottom of the three sockets and extends upward.

[0009] Preferably, a threaded head is fixedly connected to the top of the hexagonal column, a cover plate is threadedly connected to the outer surface of the threaded head, and the diameter of the cover plate is smaller than the diameter of the third screening disk.

[0010] Preferably, brackets are symmetrically fixedly connected to the bottom of the table top, and a base frame is fixedly connected between the bottoms of two brackets.

[0011] Compared with the prior art, the advantages and positive effects of the utility model are:

[0012] 1. In the utility model, when in use, the unscreened nuts are poured into the third screening disk, and then the first screening disk, the second screening disk and the third screening disk are driven to rotate by the cooperation of the forward and reverse motors, the large pulley, the transmission belt, the small pulley, the support plate, the hexagonal column and the plug sleeve. At this time, the nuts will be swung in the third screening disk, and the nuts smaller than the first screening hole will fall into the second screening disk, and the nuts smaller than the second screening hole will fall into the first screening disk again, thereby completing the screening operation of the nuts. The overall structure is simple and the manufacturing cost is low. Nuts of different sizes can be automatically screened, solving the problems of low efficiency, time-consuming and labor-intensive manual screening.

[0013] 2. In the utility model, before the nuts are screened, the cover plate and the threaded head can be threadedly connected. At this time, the cover plate will press the uppermost sleeve, so that the first screening disc, the second screening disc and the third screening disc will not shake up and down during rotation. At the same time, the cover plate can block most of the space above the third screening disc, thereby preventing the nuts inside the third screening disc from being thrown out. The utility model has a simple structure and high practicality. The base frame is mainly used to support the device, and the bracket is mainly used to connect the base frame and the table top. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A three-dimensional diagram of a nut screening device is provided for the utility model;

[0015] Figure 2 A cross-sectional view of a nut screening device is provided for the utility model;

[0016] Figure 3 A partial structural schematic diagram of a nut screening device is provided for the utility model;

[0017] Figure 4 The utility model provides a structural schematic diagram of a screening mechanism of a nut screening device.

[0018] Legend: 1. Base frame; 11. Bracket; 12. Table; 2. Forward and reverse motors; 21. Large pulley; 22. Small pulley; 23. Transmission belt; 3. Support plate; 31. Hexagonal column; 32. Threaded head; 33. Cover plate; 4. Screening mechanism; 401. First screening disc; 402. Second screening disc; 403. Third screening disc; 404. Plug sleeve; 405. First screening hole; 406. Second screening hole. DETAILED DESCRIPTION

[0019] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0020] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0021] Embodiment 1, as Figure 1-Figure 4 As shown, the utility model provides a nut screening device, including a table 12, a small pulley 22 is rotatably connected to the top of the table 12 near the middle, a support plate 3 is fixedly connected to the top of the small pulley 22, a screening mechanism 4 is arranged on the top of the support plate 3, the screening mechanism 4 includes a first screening plate 401, a second screening plate 402 is placed on the top of the first screening plate 401, a third screening plate 403 is placed on the top of the second screening plate 402, a plurality of first screening holes 405 are opened on the inner bottom of the third screening plate 403, a plurality of second screening holes 406 are opened on the top of the second screening plate 402, and the first screening plate 401 is provided with a plurality of first screening holes 406. The aperture of the dividing hole 405 is larger than the aperture of the second screening hole 406, a forward and reverse motor 2 is installed at the bottom of the table 12, the output end of the forward and reverse motor 2 passes through the bottom of the table 12 and extends to the top, a large pulley 21 is fixedly connected to the output end of the forward and reverse motor 2, a transmission belt 23 is connected between the inner surface walls of the large pulley 21 and the small pulley 22, a hexagonal column 31 is fixedly connected at the top center of the support plate 3, the inner bottoms of the first screening disc 401, the second screening disc 402 and the third screening disc 403 are all fixedly connected with a socket 404, and the outer surface of the hexagonal column 31 slides through the bottom of the three sockets 404 and extends to the top.

[0022] The effect achieved by the entire embodiment 1 is that when the device is in use, nuts mixed with different types are poured into the third screening disk 403, and then the forward and reverse motors 2 are started to drive the large pulley 21 to rotate. When the large pulley 21 rotates, the small pulley 22 is driven to rotate under the action of the transmission belt 23. When the small pulley 22 rotates, the support plate 3 connected to the top thereof cooperates with the hexagonal column 31 to drive the three sockets 404 to rotate synchronously. At this time, the first screening disk 401, the second screening disk 402 and the third screening disk 403 outside the socket 404 will rotate rapidly, and the rotation of the third screening disk 403 will cause the internal nuts to be thrown off. When the nuts are smaller than the first screening hole 405, the nuts will be swung off. When nuts with larger apertures pass through the first screening holes 405, they will fall into the second screening plate 402 below. When the nuts in the second screening plate 402 pass through the second screening holes 406 during the swinging process, the smaller nuts will fall again into the first screening plate 401 below, thereby completing the nut screening operation. The overall structure is simple and the manufacturing cost is low. Nuts of different sizes can be automatically screened, which solves the problems of low efficiency, time-consuming and labor-intensive manual screening. After the screening is completed, the third screening plate 403, the second screening plate 402 and the first screening plate 401 are removed in turn, and the screened nuts can be poured into the storage device, which is very convenient to use.

[0023] Embodiment 2, as Figure 1-Figure 4 As shown, a threaded head 32 is fixedly connected to the top of the hexagonal column 31, a cover plate 33 is threadedly connected to the outer surface of the threaded head 32, the diameter of the cover plate 33 is smaller than the diameter of the third screening disk 403, the bottom of the table top 12 is symmetrically fixedly connected to the bracket 11, and the bottom of the two brackets 11 is fixedly connected to the base frame 1.

[0024] The effect achieved by the entire embodiment 2 is that before the nuts are screened, the cover plate 33 and the threaded head 32 can be threadedly connected. At this time, the cover plate 33 will press the uppermost socket 404, so that the first screening disc 401, the second screening disc 402 and the third screening disc 403 will not shake up and down during rotation. At the same time, the cover plate 33 can block most of the space above the third screening disc 403, thereby preventing the nuts inside the third screening disc 403 from being thrown out. The structure is simple and the practicability is high. The base frame 1 is mainly used to support the device, and the bracket 11 is mainly used to connect the base frame 1 and the table top 12.

[0025] Working principle: When the device is in use, a mixture of nuts of different types is poured into the third screening disk 403, and then the forward and reverse motors 2 are started to drive the large pulley 21 to rotate. When the large pulley 21 rotates, the small pulley 22 is driven to rotate under the action of the transmission belt 23. When the small pulley 22 rotates, the support plate 3 connected to the top thereof cooperates with the hexagonal column 31 to drive the three sockets 404 to rotate synchronously. At this time, the first screening disk 401, the second screening disk 402 and the third screening disk 403 outside the socket 404 will rotate rapidly, and the rotation of the third screening disk 403 will cause the internal nuts to be swung. When nuts smaller than the aperture of the first screening hole 405 pass through the first screening hole 405, they will fall into the second screening disk 402 below, and the nuts in the second screening disk 402 will be swung. When passing through the second screening hole 406 during the process, the smaller nuts will fall again into the first screening disk 401 below, thereby completing the nut screening operation. The overall structure is simple and the manufacturing cost is low. Nuts of different sizes can be automatically screened, which solves the problems of low efficiency, time-consuming and labor-intensive manual screening. Moreover, before the nuts are screened, the cover plate 33 and the threaded head 32 can be threadedly connected. At this time, the cover plate 33 will press the top sleeve 404, so that the first screening disk 401, the second screening disk 402 and the third screening disk 403 will not shake up and down during rotation. At the same time, the cover plate 33 can block most of the space above the third screening disk 403, thereby preventing the nuts inside the third screening disk 403 from being thrown out. The structure is simple and the practicability is high.

[0026] The wiring diagram of the forward and reverse motor 2 in the present invention is common knowledge in the art, and its working principle is a known technology. The model is selected according to the actual use, so the control method and wiring arrangement of the forward and reverse motor 2 are not explained in detail.

[0027] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A nut screening device, comprising a table (12), characterized in that: A small pulley (22) is rotatably connected to the top of the tabletop (12) near the middle, a support plate (3) is fixedly connected to the top of the small pulley (22), and a screening mechanism (4) is arranged on the top of the support plate (3); the screening mechanism (4) comprises a first screening disc (401), a second screening disc (402) is placed on the top of the first screening disc (401), a third screening disc (403) is placed on the top of the second screening disc (402), a plurality of first screening holes (405) are provided on the inner bottom of the third screening disc (403), a plurality of second screening holes (406) are provided on the top of the second screening disc (402), and the aperture of the first screening holes (405) is larger than the aperture of the second screening holes (406).

2. The nut screening device according to claim 1, characterized in that: A forward and reverse motor (2) is installed at the bottom of the table top (12), and an output end of the forward and reverse motor (2) passes through the bottom of the table top (12) and extends upward.

3. The nut screening device according to claim 2, characterized in that: The output end of the forward and reverse motor (2) is fixedly connected to a large pulley (21), and a transmission belt (23) is transmission-connected between the inner surface walls of the large pulley (21) and the small pulley (22).

4. The nut screening device according to claim 3, characterized in that: A hexagonal column (31) is fixedly connected to the center of the top of the support plate (3), and a socket (404) is fixedly connected to the inner bottoms of the first screening disc (401), the second screening disc (402) and the third screening disc (403).

5. The nut screening device according to claim 4, characterized in that: The outer surface of the hexagonal column (31) slides through the bottoms of the three insert sleeves (404) and extends upward.

6. The nut screening device according to claim 5, characterized in that: A threaded head (32) is fixedly connected to the top of the hexagonal column (31), and a cover plate (33) is threadedly connected to the outer surface of the threaded head (32), wherein the diameter of the cover plate (33) is smaller than the diameter of the third screening disc (403).

7. The nut screening device according to claim 6, characterized in that: The bottom of the tabletop (12) is symmetrically fixedly connected to a bracket (11), and the bottom of two brackets (11) is fixedly connected to a bottom frame (1).

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