A high-speed screening device for standard hardware

Abstract

The application relates to the technical field of standard part detection, in particular to a high-speed detection and screening device for standard hardware, which comprises a main frame, an angle-adjustable metal material guiding frame movably assembled in the main frame, a plurality of end detection grooves arranged at the discharging end of the material guiding frame, an electrically-controlled rotary optical detection probe movably assembled in the grooves, side guide frames fixed on the outer surface of the material guiding frame and located on both sides of the detection grooves, and a magnetic control separation device slidably assembled in the guide frames. The high-speed detection and screening device realizes online detection and automatic sorting of the hardware in high-speed flow through the cooperation of the rotary optical probe and the magnetic control separation device, and has wide detection coverage and high screening efficiency.

Description

Technical Field

[0001] This invention relates to the field of standard parts testing technology, and in particular to a high-speed testing screening device for standard hardware parts. Background Technology

[0002] Standard hardware components—screws, nuts, washers, pins, etc.—are used in massive quantities in industries such as machinery manufacturing, automobile assembly, home appliance production, and construction, with tens of thousands going off production lines every day. Despite their small size, the dimensional tolerances, surface finish, and absence of dents or deformations on their internal and external contours directly determine whether the final product can be installed and function reliably. Therefore, quality inspection of hardware components is an unavoidable hurdle in large-scale production. Currently, the common practice in factories is to scan each part individually with a single optical probe. This method has several obvious drawbacks: First, it can only scan the outer surface of the hardware component. The probe cannot detect burrs inside holes, missing threads, or cracks at the bottom of grooves, leading to frequent missed inspections. Second, the pace of individual inspection is too slow and cannot keep up with the rhythm of high-speed continuous production lines. Slow inspection results in the backlog of semi-finished products or even a reduction in line speed. Thirdly, the parts are static during the inspection process. One side is photographed, then the other side is flipped and photographed. It is time-consuming and laborious to process a whole tray of loose materials from beginning to end, and it is impossible to achieve online real-time sorting. The entire line either needs to be fully inspected and then sorted, or it needs to be sampled. However, defective products missed in the sample inspection will be reworked and scrapped in the downstream assembly stage. Summary of the Invention

[0003] The technical problem that this invention aims to solve is that the existing standard hardware inspection method uses a single optical probe to statically scan each piece, which cannot cover the inspection needs of hidden parts such as inner holes and grooves. The inspection efficiency does not match the production line cycle time and lacks online real-time sorting capability.

[0004] The technical solution adopted by the present invention to solve its technical problem is: a high-speed detection screening device for standard hardware parts, including a main frame, an angle-adjustable metal guide frame for guiding materials is movably assembled inside the main frame, the discharge end of the angle-adjustable metal guide frame is provided with a number of end detection grooves, an electrically controlled rotary optical detection probe is movably assembled inside the end detection grooves, and outwardly protruding side guide frames are fixed on both sides of the outer surface of the angle-adjustable metal guide frame located at the end detection grooves, and a magnetically controlled separation device is slidably assembled inside the side guide frames on the lower surface of the angle-adjustable metal guide frame.

[0005] Furthermore, symmetrical side mounting through holes and arc-shaped adjustment ports are provided on both sides of the main frame for assembling angle-adjustable metal guide frames.

[0006] Furthermore, the angle-adjustable metal guide frame includes a flip guide frame with assembly shafts and control shafts on both sides and a flip adjustment support rod hinged to the outer side of the main frame.

[0007] Furthermore, the electrically controlled rotary optical inspection probe includes a synchronous rotating shaft fixedly installed inside the tilting guide frame, a lateral control shaft driven by the synchronous rotating shaft, an external mounting base axially fixed to the end of the lateral control shaft, and an optical inspection head fixed on the external mounting base; the optical inspection head is obliquely positioned on the external mounting base, and an LED supplementary light is installed at the end of the external mounting base.

[0008] Furthermore, a fixed external detection probe is fixedly mounted on the upper end of the side guide frame via a mounting bracket.

[0009] Furthermore, the magnetic separation device includes an annular electromagnet fixedly installed inside the side guide frame, a sliding adjustment block slidably installed inside the side guide frame, an internal control rod penetrating inside the annular electromagnet, an end control plate axially fixed to the end of the internal control rod, and an iron spring. The annular electromagnet controls the extension and retraction of the iron spring by switching the power on and off, thereby adjusting the distance between the end control plate and the annular electromagnet.

[0010] Furthermore, the synchronous rotating shaft and the lateral control shaft are driven by a gear set; a metal conductive ring for signal transmission is installed inside the end detection groove; and the inside of the flipping guide frame has reinforcing ribs.

[0011] The beneficial effects of this invention are as follows: By using an electrically controlled rotating optical detection probe installed in the end detection slot in conjunction with an LED supplementary light, multi-angle scanning of concealed parts such as inner holes, threads, and grooves can be completed during the high-speed sliding of the hardware parts along the guide frame. The detection coverage is far greater than that of a fixed single probe. The addition of a fixed external detection probe at the upper end of the side guide frame, together with the rotating detection probe, forms an internal and external collaborative detection system. Complete detection data of the inner and outer surfaces of the hardware parts can be obtained simultaneously at the same workstation, without the need for flipping or secondary positioning. The magnetic separation device uses a ring electromagnet to control the elastic deformation of an iron spring through power switching to achieve rapid displacement of the end control plate. Compared to mechanical push rods or cylinders, the electronic control response is faster, the structure is more compact, and there is no wear problem with moving parts. The flip adjustment support rod, combined with the arc-shaped adjustment port, allows for flexible adjustment of the guide frame angle according to the shape and size of the object being inspected. One device is compatible with the inspection needs of various specifications of hardware parts, making it widely applicable. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2This is a schematic diagram of the magnetic separation device in this invention.

[0015] Figure 3 This is a schematic diagram of the structure of the electrically controlled rotating optical detection probe in this invention.

[0016] In the diagram: 100. Main frame; 110. Lateral mounting through hole; 120. Arc-shaped adjustment port; 200. Angle-adjustable metal guide frame; 210. Flipping guide frame; 220. Flipping adjustment support rod; 230. Reinforcing rib; 300. End detection groove; 310. Side guide frame; 320. Mounting bracket; 400. Electrically controlled rotary optical detection probe; 410. Synchronous rotation shaft; 420. Lateral control shaft; 430. External mounting base; 440. Optical detection head; 450. LED supplementary light; 460. Transmission gear set; 500. Fixed external detection probe; 600. Magnetic separation device; 610. Ring electromagnet; 620. Sliding adjustment block; 630. Internal control rod; 640. End control plate; 650. Iron spring; 700. Metal conductive ring. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0018] like Figure 1 As shown, the overall device uses a main frame 100 as the mounting base. The main frame 100 has symmetrically machined lateral mounting through holes 110 and arc-shaped adjustment ports 120 on both side walls. An angle-adjustable metal guide frame 200 is installed in the lateral mounting through holes 110 via mounting shafts and control shafts on both sides. The mounting shafts serve as rotation fulcrums, while the control shafts extend through the arc-shaped adjustment ports 120 and connect to the telescopic end of the tilting adjustment strut 220. The fixed end of the tilting adjustment strut 220 is hinged to the outer surface of the main frame 100. The extension and retraction of the strut pushes the control shaft to slide along the arc-shaped adjustment port 120, thereby causing the entire guide frame to rotate around the mounting shaft, achieving continuous adjustment of the guide angle. The operator can adjust the guide frame to a suitable tilt angle according to the size and shape of the hardware to be inspected by using the tilting adjustment strut 220, allowing the hardware to slide down the surface of the guide frame at a stable speed and posture.

[0019] The angle-adjustable metal guide frame 200 is composed of a flip guide frame 210. The flip guide frame 210 has internal reinforcing ribs 230 to improve structural rigidity and prevent deformation during angle adjustment or long-term use. The discharge end of the guide frame is machined with several end detection grooves 300, each with its opening facing the discharge direction. An electrically controlled rotary optical detection probe 400 is movably mounted within the groove. Each end detection groove 300 also contains a metal conductive ring 700 for transmitting image signals acquired by the optical detection probe 400 to the control system.

[0020] like Figure 3 As shown, the core structure of the electrically controlled rotary optical inspection probe 400 includes a synchronous rotation shaft 410, a lateral control shaft 420, an external mounting base 430, and an optical inspection head 440. The synchronous rotation shaft 410 is fixedly installed inside the housing of the tilting guide frame 210 and connected to the motor drive end. The synchronous rotation shaft 410 transmits the rotational motion to the lateral control shaft 420 through a transmission gear set 460. The external mounting base 430 is axially fixed to the end of the lateral control shaft 420, and the optical inspection head 440 is obliquely mounted on the external mounting base 430. When the motor drives the synchronous rotation shaft 410 to rotate, the gear transmission drives the lateral control shaft 420 and the external mounting base 430 to rotate together. The optical inspection head 440 fixed on the external mounting base 430 then performs an arc motion, realizing a circumferential angle scan of the inner wall of the hardware flowing through the end inspection groove 300. An LED supplementary light 450 is also installed at the end of the external mounting base 430 to provide supplementary lighting when the light in the detection area is insufficient, ensuring that the optical detection head 440 acquires clear image data.

[0021] Above the end detection groove 300, a fixed external detection probe 500 is fixedly mounted on the upper end of the side guide frame 310 via a mounting bracket 320, forming a coordinated detection layout with the electrically controlled rotary optical detection probe 400 at the end. The fixed external detection probe 500 captures images of the outline and upper surface of the hardware from above, and can also monitor the speed and position of the hardware, thereby automatically activating the equipment's detection device. Meanwhile, the rotary detection probe extends into the inner hole or groove area of ​​the hardware from the end to scan. Together, the two can simultaneously acquire complete detection data of the outer surface and internal structure the instant the hardware slides along the guide frame.

[0022] like Figure 2As shown, the magnetic separation device 600 is installed inside the side guide frame 310 and consists of a ring electromagnet 610, a sliding adjustment block 620, an internal control rod 630, an end control plate 640, and an iron spring 650. The ring electromagnet 610 is fixed to the inner wall of the side guide frame 310. The internal control rod 630 passes through the central hole of the ring electromagnet 610, with one end fixedly connected to the end control plate 640 and the other end connected to the iron spring 650. The sliding adjustment block 620 is fitted on the outside of the internal control rod 630 and can slide horizontally within the guide groove of the side guide frame 310. Under normal conditions, the ring electromagnet 610 is de-energized, the iron spring 650 maintains its free length, and the end control plate 640 is close to the end face of the ring electromagnet 610, without affecting the normal sliding path of the hardware parts along the guide frame. When the electrically controlled rotary optical inspection probe 400 detects a defect in the hardware, the control system sends a rejection signal. The annular electromagnet 610 is instantly energized, generating electromagnetic force that attracts the iron spring 650, causing it to compress and deform. This deformation, via the internal control rod 630, pushes the end control plate 640 to extend towards the discharge side, removing the defective hardware from the main channel and guiding it into the waste collection port. Qualified hardware continues to fall along the guide frame into the qualified product collection area. After inspection, the annular electromagnet 610 is de-energized, the iron spring 650 returns to its original position, and the end control plate 640 retracts to its initial position.

Claims

1. A high-speed screening device for standard hardware parts, comprising a main frame (100), characterized in that: The main frame (100) is internally fitted with an angle-adjustable metal guide frame (200) for guiding materials. The discharge end of the angle-adjustable metal guide frame (200) is provided with several end detection grooves (300). An electrically controlled rotating optical detection probe (400) is internally fitted in the end detection grooves (300). The outer surface of the angle-adjustable metal guide frame (200) is fixed with outwardly protruding side guide frames (310) on both sides of the end detection grooves (300). A magnetically controlled separation device (600) is slidably fitted inside the side guide frames (310) on the lower surface of the angle-adjustable metal guide frame (200).

2. The high-speed inspection and screening device for standard hardware parts according to claim 1, characterized in that: The main frame (100) has symmetrically provided side mounting through holes (110) and arc-shaped adjustment ports (120) on both sides for assembling angle-adjustable metal guide frames (200).

3. The high-speed inspection and screening device for standard hardware parts according to claim 2, characterized in that: The angle-adjustable metal guide frame (200) includes a flip guide frame (210) with assembly shafts and control shafts on both sides and a flip adjustment support rod (220) hinged to the outer side of the main frame (100).

4. The high-speed inspection and screening device for standard hardware parts according to claim 3, characterized in that: The electrically controlled rotary optical detection probe (400) includes a synchronous rotating shaft (410) fixedly installed inside the flipping guide frame (210), a lateral control shaft (420) driven by the synchronous rotating shaft (410), an external mounting base (430) axially fixed to the end of the lateral control shaft (420), and an optical detection head (440) fixed on the external mounting base (430).

5. A high-speed inspection and screening device for standard hardware parts according to claim 4, characterized in that: The optical detection head (440) is obliquely mounted on the external mounting base (430), and an LED fill light (450) is installed at the end of the external mounting base (430).

6. The high-speed inspection and screening device for standard hardware parts according to claim 1, characterized in that: The upper end of the side guide frame (310) is fixedly fitted with a fixed external detection probe (500) via a mounting bracket (320).

7. The high-speed inspection and screening device for standard hardware parts according to claim 1, characterized in that: The magnetic separation device (600) includes an annular electromagnet (610) fixedly installed inside the side guide frame (310), a sliding adjustment block (620) slidably installed inside the side guide frame (310), an internal control rod (630) penetrating inside the annular electromagnet (610), an end control plate (640) axially fixed to the end of the internal control rod (630), and an iron spring (650). The annular electromagnet (610) controls the extension and retraction of the iron spring (650) by switching on and off the power, thereby adjusting the distance between the end control plate (640) and the annular electromagnet (610).

8. A high-speed inspection and screening device for standard hardware parts according to claim 4, characterized in that: The synchronous rotating shaft (410) and the lateral control shaft (420) are driven by a transmission gear set (460).

9. A high-speed inspection and screening device for standard hardware parts according to claim 1, characterized in that: The end detection groove (300) is equipped with a metal conductive ring (700) for signal transmission.

10. A high-speed inspection and screening device for standard hardware parts according to claim 3, characterized in that: The inside of the flipping guide frame (210) has reinforcing ribs (230).

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