Screening device for screw conveying

Abstract

A screening device for screw conveying relates to the technical field of screw screening devices and comprises a base, a transparent rotating table is arranged above the base, a rotating seat is fixedly arranged at the lower end of the transparent rotating table and rotationally connected with the base, a feeding frame is arranged at the rear end of one side of the transparent rotating table, and a feeding hopper is arranged at the rear end of the other side of the transparent rotating table. The feeding frame is connected with a discharging port of the rotary vibration conveyor, a feeding mechanism is arranged at the front end of one side of the transparent rotating table, a fixing plate is arranged on the other side of the transparent rotating table, the fixing plate and the base are fixed through bolts, and optical cameras are installed on the upper portion, the lower portion and one side of the interior of the fixing plate. The optical camera and the fixing plate are fixed through screws, the signal output end of the optical camera is connected to a controller in the base, an injection mechanism is installed on the front side of the upper end face of the base, and the problem that the screening accuracy is affected due to the fact that the specifications of the shapes and the diameters of screws, nuts and studs are different at different visual angles is solved.

Description

Technical Field

[0001] This utility model relates to the technical field of screw screening devices, specifically a screw conveying screening device. Background Technology

[0002] A screw conveying and screening device is an integrated unit that combines screw screening and conveying functions. It primarily uses a mechanical system to automatically feed, transport, position, and screen screws. A conveyor belt or vibrating disc transports the screws in an orderly manner, a positioning device ensures the screws are accurately within the screening range, and the screening device precisely sorts them based on their size and shape. This device is characterized by high efficiency, accuracy, and stability, enabling a continuous and stable supply of qualified screws, avoiding delays and errors caused by manual operation, and ensuring smooth operation of the production line.

[0003] For example, the Chinese patent CN118045781A, entitled "Vibration Conveying and Screening Device for a Screw Processing Machine Tool," includes a frame, a vibratory plate mounted on the frame, a downwardly inclined feeding and inspection mechanism connected to the outlet end of the vibratory plate, and a downwardly inclined feeding mechanism with a gap beside the outlet end of the feeding and inspection mechanism. This allows the screw path of the feeding mechanism to be adapted and adjusted after the screw specifications are changed, thus expanding the range of applications for the feeding mechanism. Furthermore, the coordinated design of the waste removal component, spring telescopic plate assembly, locking adjustment component, and detection scanner on the feeding and inspection mechanism ensures that if the screw thread has a bending defect during conveying on the screw path, it will be promptly rejected, achieving the purpose of efficient conveying and screening.

[0004] While the existing technology can screen screws, the shape and diameter of screws, nuts, and studs vary from different perspectives. Traditional screening devices cannot accurately screen them, thus affecting the screw pass rate and failing to meet current requirements. Therefore, we propose a screw conveying screening device. Utility Model Content

[0005] The purpose of this utility model is to provide a screening device for screw conveying, so as to solve the problem mentioned in the background art that the shape and diameter of screws, nuts and studs vary under different viewing angles, thus affecting the screening accuracy.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a screening device for screw conveying, comprising a base, a transparent rotating platform disposed above the base, a rotating seat fixedly disposed at the lower end of the transparent rotating platform and rotatably connected to the base, a feeding rack disposed at the rear end of one side of the transparent rotating platform and connected to the discharge port of a rotary vibrating conveyor, a feeding mechanism disposed at the front end of one side of the transparent rotating platform, a fixing plate disposed on the other side of the transparent rotating platform and fixed to the base by bolts, optical cameras mounted on the top, bottom and one side of the fixed plate, the optical cameras fixed to the fixed plate by screws, and the signal output terminal of the optical cameras connected to a controller inside the base, and a blowing mechanism disposed on the front side of the upper surface of the base.

[0007] Preferably, rotating rollers are rotatably installed on both sides inside the feeding mechanism, and a belt is installed between the rotating rollers. A first motor is installed at the upper end of the feeding mechanism, and the output shaft of the first motor is connected to one of the rotating rollers. A guide groove is provided at the front end inside the feeding mechanism.

[0008] Preferably, a second motor is fixedly installed at the rear end inside the base, a transmission gear is installed on the output shaft of the second motor, and a toothed ring is provided at the bottom of the rotating seat, and the toothed ring is meshed with the transmission gear.

[0009] Preferably, a blow pipe is installed on one side of the blowing mechanism, an air pump is installed at the lower end of the base, an air tank is installed on one side of the air pump, the air tank and the blow pipe are connected by a connecting pipe, an electric control valve is installed near the air tank on the connecting pipe, and the input end of the electric control valve is connected to the output end of the controller.

[0010] Preferably, a receiving box is provided below the front end of the base, and the receiving box is snapped into the base.

[0011] Preferably, the guide groove has an inclined structure.

[0012] Preferably, the rear end of the base is provided with a maintenance box door.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model features an optical detection mechanism. Screws fed by a rotary vibrating conveyor fall from the feeding rack onto the edge of the upper surface of a transparent rotating platform. By activating a second motor, the output shaft drives a transmission gear to rotate, which in turn rotates the rotating seat under the meshing of the gear ring. This allows the transparent rotating platform to rotate the screws. When the screws move to the position of the fixed plate, optical cameras are installed above, to one side, and below them. These cameras capture images of the screws from different angles, and image processing technology is used to analyze and compare these images to accurately determine whether the shape and diameter of the screws meet the specifications. After optical detection, the screws continue to move. Unqualified screws are sent to a receiving box at the blowing mechanism, while qualified screws are transferred from the feeding mechanism to the next processing equipment. This device achieves automated conveying, rotation, detection, and screening of screws, reducing manual operation and rework and waste caused by unqualified products. It effectively solves the problem of inaccurate screening caused by the limited viewing angle of traditional screening devices, significantly improving the screening accuracy of screws.

[0015] 2. This utility model incorporates a blowing mechanism, which consists of a blowing pipe, an air pump, an air tank, an electrically controlled valve, and a connecting pipe. The input end of the electrically controlled valve is connected to a controller. Whenever the optical inspection mechanism identifies a defective screw, it sends a signal to the controller. The controller then activates the electrically controlled valve as the screw rotates and moves into the blowing mechanism. Once activated, the high-pressure air inside the air tank is rapidly delivered to the blowing pipe through the connecting pipe. This high-speed airflow blows the defective screw on the transparent rotating platform into the receiving box. The blowing mechanism uses high-pressure air as its power source, and the precise control of the electrically controlled valve allows for accurate airflow regulation. This design not only ensures the effective removal of defective screws but also avoids energy waste, improving the overall energy efficiency of the device. The close cooperation between the blowing mechanism, the optical inspection mechanism, and the controller automates the entire screening process.

[0016] 3. This utility model features a feeding mechanism. When a qualified screw moves to the feeding mechanism, it first contacts the belt. By activating the first motor, its output shaft drives the internal rollers of the feeding mechanism to rotate. Under tension, the belt moves, and under friction, the screw moves towards the guide groove until it enters the guide groove. The guide groove is inclined, allowing the screw to move while maintaining its original posture until it enters the next processing stage. This mechanism ensures the stability and accuracy of the screw during the conveying process, avoiding production errors caused by positional deviations. It also enables precise conveying and guiding of screws of different specifications. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present utility model;

[0018] Figure 2 This is a side view of the present invention;

[0019] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0020] Figure 4 This is a top view of the present invention;

[0021] Figure 5 This is a schematic diagram of the transmission structure of the transparent rotary table of this utility model.

[0022] In the diagram: 1. Base; 2. Transparent rotating table; 3. Fixing plate; 4. Optical camera; 5. Feeding rack; 6. Feeding mechanism; 7. First motor; 8. Belt; 9. Guide groove; 10. Spraying mechanism; 11. Spraying pipe; 12. Receiving box; 13. Rotating seat; 14. Gear ring; 15. Second motor; 16. Transmission gear; 17. Air pump; 18. Air tank; 19. Electrically controlled valve; 20. Connecting pipe. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figure 1-5 An embodiment of this utility model provides a screw conveying screening device, including a base 1, a maintenance box door at the rear end of the base 1, a transparent rotating platform 2 above the base 1, a rotating seat 13 fixedly installed at the lower end of the transparent rotating platform 2, and the rotating seat 13 rotatably connected to the base 1, a feeding rack 5 at the rear end of one side of the transparent rotating platform 2, and the feeding rack 5 is connected to the discharge port of the rotary vibrating conveyor, a feeding mechanism 6 at the front end of one side of the transparent rotating platform 2, a fixing plate 3 on the other side of the transparent rotating platform 2, and the fixing plate 3 is fixed to the base 1 by bolts, and optical cameras 4 are installed inside the fixing plate 3 on the top, bottom and one side, and the optical cameras 4 are fixed to the fixing plate 3 by screws, and the signal output terminal of the optical cameras 4 is connected to the controller inside the base 1.

[0025] In use, the screws fed by the rotary vibrating conveyor fall from the feed rack 5 to the edge of the upper surface of the transparent rotary table 2. The transparent rotary table 2 drives the screws to rotate. When the screws move to the position of the fixed plate 3, the fixed plate 3 is equipped with optical cameras 4 above, to one side and below the screws. The optical cameras 4 can capture images of the screws from different angles and analyze and compare these images through image processing technology to accurately determine whether the shape and diameter characteristics of the screws meet the specifications. After optical inspection, the screws continue to move. Unqualified screws are sent to the receiving box 12 at the blowing mechanism 10, while qualified screws are transferred from the feeding mechanism to the next processing equipment.

[0026] Please see Figure 1 and Figure 4 The feeding mechanism 6 has rotating rollers mounted on both sides inside, with a belt 8 installed between the rollers. A first motor 7 is mounted on the upper end of the feeding mechanism 6, and the output shaft of the first motor 7 is connected to one of the rollers. The front end of the feeding mechanism 6 has a guide groove 9 with an inclined structure. When the qualified screw moves to the position of the feeding mechanism 6, it will first contact the belt 8. By turning on the first motor 7, its output shaft drives the roller inside the feeding mechanism 6 to rotate. Under the action of tension, the belt 8 moves. Then, under the action of friction, the screw moves towards the guide groove 9 until it enters the guide groove 9. The guide groove 9 is inclined, so the screw can move while maintaining its original posture until it enters the next processing stage.

[0027] Please see Figure 3 and Figure 5 A second motor 15 is fixedly installed at the rear end inside the base 1. A transmission gear 16 is installed on the output shaft of the second motor 15. A gear ring 14 is provided at the bottom of the rotating seat 13, and the gear ring 14 is meshed with the transmission gear 16. By turning on the second motor 15, the output shaft drives the transmission gear 16 to rotate, and under the meshing with the gear ring 14, it drives the rotating seat 13 to rotate, thereby realizing the rotation of the transparent rotating platform 2.

[0028] Please see Figure 1 , Figure 3 and Figure 4A blowing mechanism 10 is installed on the front side of the upper end face of the base 1. A blowing pipe 11 is installed on one side of the blowing mechanism 10. An air pump 17 is installed at the lower end inside the base 1. An air tank 18 is installed on one side of the air pump 17. The air tank 18 is connected to the blowing pipe 11 through a connecting pipe 20. An electric control valve 19 is installed near the air tank 18 on the connecting pipe 20, and the input end of the electric control valve 19 is connected to the output end of the controller. A receiving box 12 is set at the lower front end of the base 1, and the receiving box 12 is engaged with the base 1. Next, whenever the optical inspection mechanism identifies a defective screw, it sends a signal to the controller. Based on the time it takes for the screw to rotate and move to the blowing mechanism 10, the electric control valve 19 is opened. After the electric control valve 19 is opened, the high-pressure air inside the air tank 18 is quickly delivered to the blowing pipe 11 through the connecting pipe 20. The high-speed airflow blows the defective screw on the transparent rotating table 2 into the receiving box 12. The blowing mechanism 10 uses high-pressure air as a power source, and through the precise control of the electric control valve 19, it achieves precise adjustment of the airflow.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A screw conveying screening device, comprising a base (1), characterized in that: A transparent rotating platform (2) is provided above the base (1). A rotating seat (13) is fixedly provided at the lower end of the transparent rotating platform (2), and the rotating seat (13) is rotatably connected to the base (1). A feeding rack (5) is provided at the rear end of one side of the transparent rotating platform (2), and the feeding rack (5) is connected to the discharge port of the rotating vibrating conveyor. A feeding mechanism (6) is provided at the front end of one side of the transparent rotating platform (2). A fixing plate (3) is provided on the other side of the transparent rotating platform (2), and the fixing plate (3) is fixed to the base (1) by bolts. Optical cameras (4) are installed on the top, bottom and one side inside the fixing plate (3). The optical cameras (4) are fixed to the fixing plate (3) by screws, and the signal output terminal of the optical cameras (4) is connected to the controller inside the base (1). A blowing mechanism (10) is installed on the front side of the upper surface of the base (1).

2. The screw conveying screening device according to claim 1, characterized in that: The feeding mechanism (6) has rotating rollers mounted on both sides inside, and a belt (8) is installed between the rollers. The feeding mechanism (6) has a first motor (7) mounted on its upper end, and the output shaft of the first motor (7) is connected to one of the rollers. The feeding mechanism (6) has a guide groove (9) at its front end.

3. The screw conveying screening device according to claim 1, characterized in that: A second motor (15) is fixedly installed at the rear end inside the base (1). A transmission gear (16) is installed on the output shaft of the second motor (15). A toothed ring (14) is provided at the bottom of the rotating seat (13), and the toothed ring (14) meshes with the transmission gear (16).

4. The screw conveying screening device according to claim 1, characterized in that: A blow pipe (11) is installed on one side of the blow mechanism (10), an air pump (17) is installed at the lower end of the base (1), an air tank (18) is installed on one side of the air pump (17), the air tank (18) and the blow pipe (11) are connected by a connecting pipe (20), an electric control valve (19) is installed near the air tank (18) on the connecting pipe (20), and the input end of the electric control valve (19) is connected to the output end of the controller.

5. A screening device for screw conveying according to claim 4, characterized in that: A receiving box (12) is provided below the front end of the base (1), and the receiving box (12) is engaged with the base (1).

6. A screw conveying screening device according to claim 2, characterized in that: The guide groove (9) has an inclined structure.

7. A screw conveying screening device according to claim 1, characterized in that: The base (1) is provided with a maintenance box door at its rear end.

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