A high-precision vibrating bolt screening device

Abstract

The utility model provides a kind of high-precision vibrating bolt screening equipment, belong to bolt screening technical field, including the preliminary screening vibration tank being obliquely arranged on rack, the inner wall of preliminary screening vibration tank is uniformly rotationally arranged with screen roller, synchronous rotating component that drives all adjacent screen roller to rotate in the same direction is arranged on rack, the blanking side of preliminary screening vibration tank is formed gradually narrow discharge slide by the baffle of fixed connection, the outlet of discharge slide is butt joint with the material guide chute being fixed on rack, adopt two-stage screening structure, size pre-screening is realized by screen roller spacing in preliminary screening, high-precision detection is carried out to bolt appearance, defect and other details by image recognition instrument in secondary screening, realize the automatic separation of qualified product and unqualified product in combination with rudder-driven secondary screening groove steering control, detection precision is much higher than traditional manual or single mechanical screening.

Description

Technical Field

[0001] This utility model relates to the field of bolt screening technology, specifically a high-precision vibrating bolt screening device. Background Technology

[0002] Bolts, as the most basic and core fasteners in the machinery manufacturing field, directly determine the assembly precision, structural stability, and operational safety of various equipment through their production quality. They are widely used in key industries such as automobile manufacturing, aerospace, rail transportation, construction machinery, and precision instruments. In automobile engine block connections, bolts must withstand continuous alternating loads under high temperature and high pressure environments; insufficient thread precision and strength can lead to seal failure. Bolts in the aerospace field must meet the dual requirements of lightweight design and ultra-high strength; even minor dimensional deviations or surface defects can cause significant safety hazards.

[0003] A high-precision vibrating screening device is disclosed in the related technology (announcement number: CN212732967U). The disclosed technical solution is that by using a cover plate, bolts, a first screen plate and a second screen plate in combination, the first screen plate and the second screen plate perform multi-stage filtration of the raw materials, which increases the screening effect. Moreover, the first screen plate and the second screen plate are easy to disassemble, which is conducive to the maintenance of the first screen plate and the second screen plate, thereby improving the practicality of the overall mechanism.

[0004] The above-disclosed technical solutions reveal the following problems: Traditional screening equipment has many limitations in bolt screening. Most equipment relies on a single vibration screening method, using only screens or rollers with fixed spacing to achieve initial size screening. On the other hand, bolts after initial screening need to be manually sorted or rely on low-precision detection methods, making it difficult to accurately identify details such as surface defects and thread precision, which can easily lead to missed detections or misjudgments. In response, we propose a high-precision vibration bolt screening equipment.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background section of this application, and therefore may include prior art information that does not constitute prior art information known to those skilled in the art. Utility Model Content

[0006] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies. To address the problem of bolt screening in the prior art, this utility model provides a high-precision vibrating bolt screening device. It employs a primary screening structure using screen rollers combined with a secondary screening structure using visual imaging to improve the bolt screening tightness. The specific technical solution is as follows: A high-precision vibrating bolt screening device includes a primary screening vibrating trough inclinedly mounted on a frame. Screen rollers are uniformly rotatably mounted on the inner wall of the primary screening vibrating trough. A synchronous rotating component is mounted on the frame to drive all screen rollers to rotate in the same direction. The material discharge side of the primary screening vibrating trough forms a gradually narrowing discharge slope through a fixed baffle. A guide chute fixed on the frame is connected to the outlet of the discharge chute. A secondary screening trough rotatably mounted on the frame is connected to the material discharge point of the guide chute. An image recognition device is fixed on the frame and electrically connected to the rotation drive component of the secondary screening trough above the guide chute.

[0007] In the above technical solution, discharge rollers rotating in opposite directions are provided on both sides of the discharge slope outlet, and the outer wall of the discharge slope is provided with a linkage drive component that drives the two discharge rollers to rotate simultaneously.

[0008] A servo motor is fixed to the top of the frame, and the secondary screen is fixed to the output end of the servo motor. The image recognition device is electrically connected to the servo motor through a controller.

[0009] Below the secondary screen trough is a receiving trough fixed on the frame, and the top of the receiving trough has recycling chambers located on both sides of the secondary screen trough.

[0010] The top of the receiving trough is fixedly connected to a guide rail, and the bottom of the secondary screening trough is provided with a guide groove that is slidably disposed on the guide rail.

[0011] The discharge ramp is a triangular trough that is fixed to the material discharge point of the primary screening vibrating trough.

[0012] The synchronous rotating component includes an extension shaft fixed to each of the screen rollers, and the extension shaft passes through the frame and extends to the outside. Each extension shaft is fitted with a transmission component on the outer wall outside the frame, and the outer walls of all the transmission components are fitted with meshing linkage components.

[0013] Compared with the prior art, the beneficial effects of this utility model are: 1. By driving all screen rollers to rotate in the same direction through synchronous rotating components, additional driving force is provided for the bolts, preventing the bolts from getting stuck in the gap between the screen rollers. At the same time, in conjunction with the vibration effect of the primary screening vibrating trough, the material throughput in the primary screening stage is significantly improved, and clogging is reduced.

[0014] Second, a two-stage screening structure of "primary screening + secondary screening" is adopted. The primary screening achieves pre-screening of size through the gap between the screening rollers. The secondary screening uses an image recognition instrument to perform high-precision detection of details such as bolt appearance and defects. Combined with the steering control of the secondary screening groove driven by the servo motor, the automatic separation of qualified and unqualified products is achieved. The detection accuracy is far higher than that of traditional manual or single mechanical screening.

[0015] Third, the discharge ramp of the primary screening vibrating trough is designed with a gradually narrowing structure, which, together with the oppositely rotating discharge rollers, ensures that the bolts enter the guide chute sequentially and orderly, avoiding accumulation and blockage. The precise docking of the guide chute and the secondary screening trough, as well as the sliding cooperation between the bottom guide chute and the guide rail of the secondary screening trough, ensures the stability of the bolts during the conveying process, providing reliable detection conditions for image recognition.

[0016] Fourth, by linking the image recognition device, processor, controller and servo motor, the quality of bolts can be automatically judged and sorted, reducing manual intervention; the coordinated work of synchronous rotating components and vibration mechanism enables the equipment to operate continuously and stably, adapt to large-scale production scenarios, reduce labor costs and improve screening consistency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a high-precision vibrating bolt screening device according to the present invention. Figure I ; Figure 2 This is a schematic diagram of the structure of a high-precision vibrating bolt screening device according to the present invention. Figure II ; Figure 3 This is a schematic diagram of the structure of a high-precision vibrating bolt screening device according to the present invention. Figure III ; Figure 4 for Figure 2 A magnified view of part A; in, Figures 1 to 4 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1-frame, 2-primary screening vibrating trough, 3-screen roller, 4-discharge ramp, 5-guide chute, 6-secondary screening trough, 7-image recognition device, 8-discharge roller, 9-collection trough, 10-recovery chamber, 11-guide chute, 12-extension shaft, 13-transmission component, 14-guide rail, 15-linkage component. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] The following are specific implementation cases and appendices. Figure 1-4 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0020] A high-precision vibrating bolt screening device includes a primary screening vibrating trough 2 inclinedly mounted on a frame 1. Screening rollers 3 are uniformly rotatably mounted on the inner wall of the primary screening vibrating trough 2. An outer rod is hinged to the top of the frame 1, and an inner rod is hinged to the bottom of the primary screening vibrating trough 2. The outer rod is sleeved on the outer wall of the inner rod. A spring is sleeved on the outer wall of the inner rod and located between the frame 1 and the outer rod. A motor is mounted on the outer wall of the frame 1. One end of a rotating frame is fixedly sleeved on the outer wall of the motor's output shaft. The other end of the rotating frame is hinged to one end of a transmission frame. The other end of the transmission frame is rotatably connected to the outer wall of the primary screening vibrating trough 2. After the rotating frame rotates with the output shaft of the motor, the transmission frame drives the hinged primary screening vibrating trough 2 to vibrate.

[0021] The frame 1 is equipped with a synchronous rotating component that drives all the screen rollers 3 to rotate in the same direction. The synchronous rotating component makes all the screen rollers 3 on the frame 1 rotate at the same time. As the screen rollers 3 rotate, the power of the bolts to slip off is increased. A collection box is fixedly installed at the bottom of the primary screening vibration trough 2 so that the screened bolts enter the collection box for collection.

[0022] The material discharge side of the primary screening vibrating trough 2 forms a gradually narrowing discharge ramp 4 through a fixed baffle. The outlet of the discharge ramp 4 is connected to a guide chute 5 fixed to the frame 1. The guide chute 5 is located below the outlet of the discharge ramp 4, allowing bolts initially screened from the primary screening vibrating trough 2 to fall sequentially onto the guide chute 5 through the narrow opening of the discharge ramp 4. The material discharge point of the guide chute 5 is connected to a secondary screening trough 6 rotatably mounted on the frame 1. Above the guide chute 5 is an image recognition device 7 fixed to the frame 1 and electrically connected to the rotation drive of the secondary screening trough 6.

[0023] When a quality problem is detected in a bolt, the signal after image recognition is transmitted to the processor, which converts it into an electrical signal. The electrical signal is sent to the controller, which drives the output shaft of the servo motor to rotate. The output shaft of the servo motor drives the secondary screen trough 6 to rotate. The bolts screened by the inclined secondary screen trough 6 are guided into the corresponding recovery chamber 10. When no bolt problem is detected, they slide into the collection trough connected to the secondary screen trough 6 and are collected.

[0024] The discharge slide 4 has two opposing rotating discharge rollers 8 on either side of its outlet, and a linkage drive component on its outer wall to drive the two discharge rollers 8 to rotate simultaneously. One end of each of the two baffles is fixed to the bottom of the primary screening vibrating trough 2, and the other ends of the two baffles are close together, forming a triangle with the outlet of the primary screening vibrating trough 2. This causes the inner cavity of the discharge slide 4 to gradually narrow. Grooves are formed on the side where the two baffles are close together, and the discharge rollers 8 are located inside the grooves. A fixing frame is fixedly installed on the top of the baffles, and a rotating shaft rotates at the bottom of the fixing frame. The discharge rollers 8 are fixedly sleeved on the outer wall of the rotating shaft. Both rotating shafts extend beyond the outside of the fixing frame, and gears are fixedly sleeved on the outer wall of the rotating shafts, with the two gears meshing with each other. A motor is fixedly installed on the surface of one of the baffles, and the output shaft of the motor is fixedly sleeved with a drive gear, so that the drive gear meshes with a gear on one of the rotating shafts.

[0025] After the motor is connected to the power supply through the wire, the drive gear drives the gear on one of the rotating shafts to rotate, so that the two meshing gears drive the two discharge rollers 8 to rotate relative to each other, which prevents the bolt from getting stuck at the discharge port when it is discharged and ensures the smoothness of the discharge process.

[0026] It is worth noting that a servo motor is fixed to the top of the frame 1, and the secondary screen 6 is fixed to the output end of the servo motor. The image recognition device 7 is electrically connected to the servo motor through the controller.

[0027] When the image recognition device 7 detects a quality problem with the bolt, it transmits the signal after image recognition to the processor, which converts it into an electrical signal. The electrical signal is then sent to the controller, which drives the output shaft of the servo motor to rotate. Upon receiving the controller's command, the servo motor drives the secondary screen trough 6 to rotate in the corresponding direction.

[0028] In addition, a receiving trough 9 fixed to the frame 1 is provided below the secondary screening trough 6, and a recycling chamber 10 located on both sides of the secondary screening trough 6 is opened at the top of the receiving trough 9. A partition plate is fixedly installed in the middle of the receiving trough 9, which divides the two sides of the receiving trough 9 into two recycling chambers 10. The collection trough is mounted above the partition plate and below the secondary screening trough 6, so that standard bolts can be collected directly through the collection trough.

[0029] In addition, a guide rail 14 is fixedly connected to the top of the receiving trough 9, and a guide groove 11 is slidably disposed on the guide rail 14 at the bottom of the secondary screening trough 6.

[0030] A semi-circular guide rail 14 is fixed to the top of the partition in the middle of the receiving trough 9. An arc-shaped guide groove 11 is opened at the bottom of the secondary screen trough 6, so that the secondary screen trough 6 slides on the guide rail 14 through the guide groove, ensuring the stability of the rotation screening process of the secondary screen trough 6.

[0031] The discharge slide 4 is a triangular trough that is fixed to the material drop point of the primary screening vibrating trough 2.

[0032] Furthermore, the synchronous rotating component includes an extension shaft 12 fixed to each screen roller 3, and the extension shaft 12 passes through the frame 1 and extends to the outside. Each extension shaft 12 is fitted with a transmission component 13 on the outer wall outside the frame 1, and the outer wall of all transmission components 13 is fitted with a meshing linkage component 15.

[0033] A motor is fixedly installed on the outer wall of the frame 1, and the output shaft of the motor is fixedly connected to one end of one of the extension shafts 12. Both ends of each screen roller 3 rotate on the inner wall of the frame 1 via a shaft that passes through the center. One end of the extension shaft 12 is fixedly connected to one end of the shaft, and the other end of the extension shaft 12 is located outside the frame 1.

[0034] The transmission component 13 is a sprocket, and the linkage component 15 is a chain. The linkage component 15 is simultaneously sleeved on the outside of all the sprockets 13. Two limiting plates are fixedly installed on the outer wall of the primary screening vibration trough 2, which slide against the upper and lower outer walls of the linkage component 15 to prevent the linkage component 15 from disengaging from the transmission component 13 and to maintain the engagement.

[0035] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to 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.

[0036] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision vibrating bolt screening device, comprising a primary screening vibrating trough (2) inclinedly arranged on a frame (1), wherein a screen roller (3) is uniformly rotatably arranged on the inner wall of the primary screening vibrating trough (2), characterized in that, The frame (1) is provided with a synchronous rotating component that drives all screen rollers (3) to rotate in the same direction. The material drop side of the primary screen vibration trough (2) forms a gradually narrowing discharge slope (4) through a fixed baffle. The outlet of the discharge slope (4) is connected to a guide chute (5) fixed on the frame (1). The material drop point of the guide chute (5) is connected to a secondary screen trough (6) rotatably mounted on the frame (1). Above the guide chute (5) is an image recognition device (7) fixed on the frame (1) and electrically connected to the rotation drive of the secondary screen trough (6).

2. The high-precision vibrating bolt screening device according to claim 1, characterized in that: The discharge slide (4) has discharge rollers (8) rotating in opposite directions on both sides, and the outer wall of the discharge slide (4) is provided with a linkage drive component that drives the two discharge rollers (8) to rotate simultaneously.

3. The high-precision vibrating bolt screening device according to claim 1, characterized in that: A servo motor is fixed to the top of the frame (1), and the secondary screen (6) is fixed to the output end of the servo motor. The image recognition device (7) is electrically connected to the servo motor through a controller.

4. The high-precision vibrating bolt screening device according to claim 1, characterized in that: Below the secondary screen trough (6) is a receiving trough (9) fixed on the frame (1), and the top of the receiving trough (9) is provided with recycling chambers (10) located on both sides of the secondary screen trough (6).

5. The high-precision vibrating bolt screening device according to claim 4, characterized in that: The top of the receiving trough (9) is fixed with a guide rail (14), and the bottom of the secondary screen trough (6) is provided with a guide groove (11) that is slidably disposed on the guide rail (14).

6. The high-precision vibrating bolt screening device according to claim 1, characterized in that: The discharge ramp (4) is a triangular trough that is fixed to the material drop point of the primary screening vibrating trough (2).

7. The high-precision vibrating bolt screening device according to claim 1, characterized in that: The synchronous rotating component includes an extension shaft (12) fixed to each of the screen rollers (3), and the extension shaft (12) passes through the frame (1) and extends to the outside. Each of the extension shafts (12) is fitted with a transmission component (13) on the outer wall outside the frame (1), and all the transmission components (13) are fitted with meshing linkage components (15) on their outer walls.

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