An automatic screw sorter

Abstract

This utility model relates to the field of screw conveying technology, specifically an automatic screw sorting device. It includes a vibrating electromagnet connected to a pulse power supply, which generates an alternating electromagnetic field. The device also includes a mounting base, a magnet, and a vibration assembly. The vibration assembly is mounted on the mounting base and covers the vibrating electromagnet and the magnet. The magnet is connected to the vibration assembly. When the vibrating electromagnet attracts or releases the magnet, it drives the vibration assembly to vibrate. This application, by using a pulse power supply to drive the vibrating electromagnet and cooperating with the attractable and releaseable magnet, can precisely control the timing and force of the vibration. By adjusting the intensity, direction, and duration of the pulse current, the frequency of the electromagnet's attraction and release can be easily changed, thereby indirectly controlling the impact frequency of the top plate on the screw track. This adjustability allows the sorting device to quickly match the optimal vibration parameters for different screw models, significantly improving the adaptability and efficiency of the sorting process.

Description

Technical Field

[0001] This utility model relates to the field of screw conveying technology, and in particular to an automatic screw sorting device. Background Technology

[0002] In automated screw assembly lines, automatic screw feeding and sorting are crucial preliminary processes. Vibratory feeders are currently the most commonly used automatic screw sorting equipment. Their working principle is to use electromagnets to drive mechanical vibration, causing the screws in the hopper to move upward along a spiral track. During this process, screws with inconsistent orientations are screened, rejected, or corrected by specific structures on the track (such as notches or baffles) or vibration screening, ultimately ensuring that all screws enter the conveying pipeline in a uniform orientation.

[0003] However, traditional electromagnetic vibrators typically use AC power to generate continuous vibration, with a relatively fixed frequency and amplitude. This constant vibration mode is poorly adaptable to screws of different sizes, weights, and surface conditions. For small screws or screws with high surface friction, insufficient vibration may lead to low sorting efficiency or even jamming; for heavier screws, excessive vibration may cause them to bounce excessively on the track, resulting in chaotic posture and reducing sorting success rate and conveying efficiency. In addition, the continuous vibration also results in higher equipment noise and relatively higher energy consumption.

[0004] Therefore, a core technical problem that urgently needs to be solved in this field is: how to provide an automatic screw sorter with flexible adjustable vibration mode, so that it can adapt to the sorting requirements of screws of different specifications by actively adjusting the amplitude and frequency of vibration, thereby improving sorting efficiency, reliability and adaptability. Summary of the Invention

[0005] The main objective of this invention is to provide an automatic screw sorter to solve the problems raised in related technologies.

[0006] To achieve the above objectives, according to one aspect of the present invention, an automatic screw sorter is provided, comprising a vibrating electromagnet connected to a pulse power supply to generate an alternating electromagnetic field, and further comprising: Mounting base, which provides mounting support for the vibrating electromagnet; A magnet is disposed on one side of a vibrating electromagnet, which attracts and releases the magnet by generating an alternating electromagnetic field. A vibration assembly is mounted on a mounting base and covers a vibrating electromagnet and a magnet. The magnet is connected to the vibration assembly. When the vibrating electromagnet attracts or releases the magnet, it drives the vibration assembly to vibrate.

[0007] Furthermore, the mounting base includes a base plate, on the upper surface of which a base is fixedly mounted. A groove is formed on the top of the base, and several horizontal screw holes are provided on one side of the groove.

[0008] Furthermore, both ends of the upper surface of the base plate are fixed with inclined blocks, and the two inclined blocks are inclined in the same direction.

[0009] Furthermore, the vibration assembly includes a top plate and two cover plates. The top plate has inclined surfaces at both ends. The top ends of the two cover plates are mounted on the two inclined surfaces of the top plate by screws, and the bottom ends are mounted on the corresponding inclined blocks by screws.

[0010] Furthermore, a groove for accommodating magnets is provided on the lower side of the top plate, and several through holes penetrating the top plate are provided on the groove.

[0011] Furthermore, the magnet is made of black iron, and the top of the black iron has several vertical screw holes.

[0012] Furthermore, the two sides of the base plate without the inclined blocks are connected to side plates by screws.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. Achieved active and flexible adjustment of vibration parameters: This application utilizes a pulsed power supply to drive a vibrating electromagnet, coupled with a magnet that can be attracted and released, to precisely control the timing and force of vibration. By adjusting the intensity, direction, and duration of the pulsed current, the frequency of the electromagnet's attraction and release can be easily changed, thereby indirectly controlling the impact frequency of the top plate on the screw track. This adjustability allows the sorter to quickly match the optimal vibration parameters for different screw models, significantly improving the adaptability and efficiency of the sorting process.

[0014] 2. Optimized vibration transmission efficiency and increased effective amplitude: This application innovatively uses an inclined cover plate as an elastic vibration transmission element. The inclined structure gives it a stronger restoring force during deformation, enabling it to more efficiently convert the magnetic force generated by the vibrating electromagnet into a drive for the top plate. Simultaneously, this design allows the top plate to generate a larger vertical displacement during engagement and disengagement, thus providing a larger effective amplitude for the screw track. This helps overcome the static friction between screws, making them easier to move and arrange on the track, especially effective for screws prone to jamming.

[0015] 3. Significantly Reduced Operating Noise: Compared to the continuous buzzing noise generated by traditional AC electromagnetic vibrators, the pulse drive method used in this application ensures that the vibrating electromagnet operates intermittently rather than continuously. This "attract-release" intermittent working mode fundamentally reduces the inherent electromagnetic noise generated by the continuous alternating magnetic field of the iron core. Simultaneously, the elastic buffering effect of the cover plate also reduces the sharp noise of mechanical impacts, resulting in quieter overall equipment operation and an improved working environment.

[0016] 4. Compact structure and high reliability: The entire device features an integrated mounting base design, with a compact structure and clear connection between the vibration components and the electromagnetic drive section. The cover plate is made of insulating and wear-resistant materials such as yellow wax board, ensuring both elastic deformation requirements and improved insulation safety. The enclosed design of the side plates provides protection, preventing external interference and enhancing the long-term operational reliability of the equipment in industrial environments. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is a schematic diagram of the internal structure of this utility model; Figure 3 This is an exploded view of the present invention.

[0018] Figure label: 1. Base plate; 2. Base; 3. Groove; 4. Horizontal screw hole; 5. Cover plate; 6. Side plate; 7. Top plate; 8. Through hole; 9. Receptacle groove; 10. Vibrating electromagnet; 11. Black iron; 12. Vertical screw hole; 13. Inclined block. Detailed Implementation

[0019] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0020] This embodiment provides an automatic screw sorter, such as... Figure 1 As shown, it mainly includes a mounting base, a vibrating electromagnet 10, a ferrite core 11 as a magnet, and a vibration assembly.

[0021] The mounting base provides support and a foundation for the entire sequencer. The mounting base includes a base plate 1. (See figure) Figure 3As shown, a base 2 is fixedly mounted on the upper surface of the base plate 1. A groove 3 is formed on the top of the base 2, and three transverse threaded holes, i.e., horizontal threaded holes 4, are formed on one side wall of the groove 3. The bottom of the vibrating electromagnet 10 is accommodated within the groove 3, and is securely fixed to the base 2 by screws passing through the horizontal threaded holes 4 and pressing against the side of the vibrating electromagnet 10. Furthermore, a wedge 13 is fixedly mounted at each end of the upper surface of the base plate 1. The inclination direction and angle of these two wedges 13 are consistent.

[0022] The vibrating electromagnet 10 is connected to a pulse power supply and a 24V DC power supply. The 24V DC power supply provides it with operating power, while the pulse power supply is used to control the generation of a specific pattern of magnetic field. The vibrating electromagnet 10 is the core driving element, which attracts and releases the ferrite 11 by generating alternating electromagnetic fields.

[0023] The magnet is the ferrite core 11 in this embodiment, which is made of a high-permeability material. Two vertical threaded holes, namely vertical threaded holes 12, are formed at the top of the ferrite core 11. Figure 2 As shown, the ferrite core 11 is positioned on one side of the vibrating electromagnet 10, with a suitable initial air gap maintained between them. The size of this air gap must ensure that when the vibrating electromagnet 10 is energized and attracted, it can generate sufficient magnetic force to overcome the resistance and attract the ferrite core 11 to move; when released, the ferrite core 11 can smoothly return to its original position.

[0024] The vibration assembly is mounted on a mounting base and covers the vibrating electromagnet 10 and the ferrite core 11. The vibration assembly includes a top plate 7 and two cover plates 5. The two ends of the top plate 7 are machined into bevels, and the angle of the bevels matches the inclination angle of the inclined blocks 13 on the bottom plate 1. The top ends of the two cover plates 5 are respectively mounted on the two bevels of the top plate 7 with screws, and their bottom ends are also respectively mounted on the corresponding inclined blocks 13 with screws. In this way, the top plate 7 is elastically supported above the bottom plate 1 by the inclined cover plates 5 on both sides. A groove 9 for accommodating the ferrite core 11 is opened on the lower side of the top plate 7. Two through holes 8 penetrating the thickness of the top plate 7 are opened above the groove 9. After the ferrite core 11 is inserted into the groove 9, the vertical screw holes 12 on it are aligned with the through holes 8 on the top plate 7. By passing screws through the through holes 8 and screwing them into the vertical screw holes 12, the ferrite core 11 can be firmly fixed to the top plate 7, making the ferrite core 11 and the top plate 7 a single moving part.

[0025] For safety and protection, side plates 6 are screwed to both sides of the base plate 1 where the inclined blocks 13 are not installed. The side plates 6 enclose the internal components such as the vibrating electromagnet 10 and the ferrite core 11, isolating them from the outside world and preventing foreign objects from entering. The side plates 6 are not fixedly connected to the top plate 7, leaving a gap to ensure that the vibration of the top plate 7 is not obstructed. Sufficient space is also left between the side plates 6 and the cover plate 5 to allow the cover plate 5 to undergo elastic deformation during vibration.

[0026] The working principle of this utility model is as follows: In the initial state, i.e., when the vibrating electromagnet 10 is not energized or when the positive DC current has ended, the ferrite 11 maintains a certain distance from the vibrating electromagnet 10 under the elastic restoring force of the cover plate 5. At this time, the top plate 7 is in a higher position under the support of the cover plate 5, and its working surface is pressed against the screw conveying track above.

[0027] When vibration is required, the pulse power supply first supplies a DC pulse current with a constant direction and appropriate intensity to the coil of the vibrating electromagnet 10. The current generates a strong magnetic field, magnetizing and attracting the upper iron 11. Under the action of the magnetic force, the iron 11 moves towards the vibrating electromagnet 10, causing the top plate 7 fixed thereto to move as well. During this process, the inclined cover plate 5 is forced to undergo elastic bending deformation, the height of the top plate 7 decreases, and thus it disengages from the screw track.

[0028] Subsequently, a brief reverse DC pulse is applied to the vibrating electromagnet 10 by the pulse power supply. This reverse magnetic field cancels out the residual magnetism of the ferrite 11, demagnetizing it. After the magnetic force disappears, the bent cover plate 5 quickly returns to its original shape due to the elastic restoring force of its own material, causing the ferrite 11 and the top plate 7 to return to their original position as a whole. The top plate 7 then presses against the screw track again and applies an upward impact.

[0029] The vibrating electromagnet 10, controlled by a pulsed power supply, alternately generates magnetic force for attraction and release at a certain frequency. This causes the top plate 7 to drive the screw track to vibrate continuously and regularly up and down. This vibration is transmitted to the screws on the track, causing them to overcome static friction and move directionally along the track, thus achieving automatic sorting. By adjusting the intensity, width, and frequency of the pulses, the intensity and frequency of the vibration can be precisely controlled to adapt to the sorting requirements of different screws.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. An automatic screw sorter, comprising a vibrating electromagnet (10), wherein the vibrating electromagnet (10) is connected to a pulse power supply to generate an alternating electromagnetic field, characterized in that, Also includes: Mounting base, which provides mounting support for the vibrating electromagnet (10); A magnet is disposed on one side of a vibrating electromagnet (10), which attracts and releases the magnet by generating an alternating electromagnetic field. The vibration assembly is mounted on a mounting base and covers a vibrating electromagnet (10) and a magnet. The magnet is connected to the vibration assembly. When the vibrating electromagnet (10) attracts or releases the magnet, it drives the vibration assembly to vibrate.

2. The automatic screw sorter according to claim 1, characterized in that, The mounting base includes a base plate (1), and a base (2) is fixedly provided on the upper surface of the base plate (1). A groove (3) is provided on the top of the base (2), and several horizontal screw holes (4) are provided on one side of the groove (3).

3. The automatic screw sorter according to claim 2, characterized in that, Both ends of the upper surface of the base plate (1) are fixed with inclined blocks (13), and the two inclined blocks (13) are inclined in the same direction.

4. The automatic screw sorter according to claim 1, characterized in that, The vibration assembly includes a top plate (7) and two cover plates (5). The top plate (7) has inclined surfaces at both ends. The top ends of the two cover plates (5) are installed on the two inclined surfaces of the top plate (7) by screws, and the bottom ends are installed on the corresponding inclined blocks (13) by screws.

5. The automatic screw sorter according to claim 4, characterized in that, The top plate (7) has a groove (9) for accommodating magnets on its lower side, and the groove (9) has several through holes (8) that penetrate the top plate (7).

6. The automatic screw sorter according to claim 1, characterized in that, The magnet is a black iron (11), and the top of the black iron (11) has several vertical screw holes (12).

7. The automatic screw sorter according to claim 3, characterized in that, The base plate (1) is not equipped with a wedge (13), and both sides are connected to side plates (6) by screws.

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