Fastener detection equipment

Abstract

The invention discloses fastener detection equipment. According to the technical scheme, the fastener detection equipment is characterized by comprising a workbench, a rotating disc mechanism, a feeding mechanism, a detection mechanism, a material removing mechanism, a discharging mechanism, a lamplight module and a control mechanism, wherein the rotating disc mechanism, the feeding mechanism, the detection mechanism, the material removing mechanism, the discharging mechanism, the lamplight module and the control mechanism are arranged on the workbench. The turntable mechanism is provided with a glass detection disc, an adjusting track and a clamping block, and the clamping block comprises a clamping assembly and a rotating assembly and is driven by an air pump and the like. The feeding mechanism feeds materials accurately, and the adjusting mechanism can adjust the distance between the clamping blocks. And a transparent acrylic positioning sheet is arranged at the bottom of the connecting seat. Compared with the prior art, the device can adapt to detection of fasteners of different specifications, ensures that the fasteners are stable and do not deviate in the detection process, improves the detection precision and efficiency, guarantees the detection effect, and has wide application prospects and practical value.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a fastener detection equipment. Background Art

[0002] Fasteners are a type of mechanical parts widely used in various industries. They are mainly used to connect and fasten two or more components or parts to form a whole. Fasteners such as screws are usually cylindrical and are commonly used to connect product materials. Screws are widely used in electronics, electrical, electrical appliances, furniture and mechanical equipment. After being produced, existing screws usually need to go through a testing process before they can be sold. At present, the inspection of screws usually includes size verification, surface quality inspection, material inspection and strength inspection. Among them, the surface quality inspection needs to check the cracks, dents, burrs, etc. on the surface of the screws. For screws with obvious defects, it will affect the installation and use during use, as well as the connection strength and stability of the product connection.

[0003] At present, the commonly used detection method in factories is to use illumination combined with visual inspection to determine whether there are cracks on the surface of the screw. In order to improve the accuracy of photographic inspection of the bottom of the screw, the fastener inspection equipment on the market usually uses a glass turntable as a conveying mechanism, allowing the camera and light at the bottom to be transmitted through the glass turntable, taking clear pictures of the fasteners placed above, thereby presenting the characteristics of the bottom. At the same time, it can achieve uniform distribution of light sources in the space to avoid shadows on the fasteners.

[0004] However, in existing equipment, due to the fragility of glass material, it is difficult to install more and complex structures on the glass turntable. As a result, during inspection, existing fasteners are usually placed on the surface of the glass turntable under the conveyance of a vibrating plate. Since the glass surface is relatively smooth, the position of the fasteners may easily shift during operation. At the same time, when vibrated, the fasteners may easily shake and fall, thereby affecting the inspection effect. Summary of the invention

[0005] The present invention provides a fastener detection device, which solves the problem in the related art that the fasteners may shift in position or even fall during the detection process, affecting the detection.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a fastener detection equipment, including a workbench, on which a turntable mechanism is rotatably arranged, and a feeding mechanism, a detection mechanism, a material removal mechanism, a material unloading mechanism, a lighting module distributed above and below the turntable mechanism, and a control mechanism connecting the above-mentioned mechanisms and the turntable are sequentially arranged along the rotation path of the turntable; the turntable mechanism includes a mounting plate rotatably arranged on the workbench, a ring-shaped detection plate made of glass is fixedly connected to the circumference of the mounting plate, an annular adjustment track is arranged on the upper surface of the detection plate, a clamping block for clamping fasteners is arranged on the adjustment track, and an adjustment mechanism for adjusting the spacing between a plurality of clamping blocks is arranged on the mounting plate.

[0007] The present invention is further configured such that the clamping block includes a connecting seat with an adjusting rail, the connecting seat is provided with a limiting groove running through from top to bottom, and the limiting groove is provided with an opening at one end facing the edge of the detection disk; the inner wall of the limiting groove is provided with a clamping assembly and a rotating assembly, the clamping assembly is used to place the fastener in a vertical state so that its peripheral side is parallel to the inner wall of the limiting groove, and the rotating assembly is in close contact with the peripheral side of the fastener to drive the fastener to rotate.

[0008] The present invention is further configured such that a plurality of sliding tube grooves A are embedded in the inner wall of the limit groove; the clamping assembly includes a clamping head slidably arranged in the plurality of sliding tube grooves A, and the end of the clamping head is provided with a fitting surface that fits with the circumferential side of the fastener; and also includes a driving assembly that drives the clamping head along the sliding tube groove A away from or close to the fastener.

[0009] The present invention is further configured such that a pair of sliding tube grooves B are embedded in the inner wall of the limiting groove, and the pair of sliding tube grooves B are symmetrically arranged and perpendicular to the inner wall of the limiting groove; the rotating component includes a driving head slidably arranged in the sliding tube groove B, and a rotating disk that can be rotatably connected to the driving head and can fit the circumference of the fastener is connected to the rotating disk. The rotating disk is connected to a rotating motor connected to the control mechanism; and it also includes a driving component that drives the driving head along the sliding tube groove B away from or close to the fastener.

[0010] The present invention is further configured such that the driving assembly includes an air cavity arranged on the connecting seat and an air pump connected to the air cavity, the air pump is connected to the control mechanism and is connected to the sliding tube groove A and the sliding tube groove B through the air cavity; it also includes a piston rod arranged in the sliding tube groove A and the sliding tube groove B, the piston rod is respectively connected to the driving head and the clamp, when the connecting seat passes through the feeding mechanism, the air pump inflates the air cavity to drive the piston rod to move toward the fastener; it also includes a reset spring arranged between the piston rod and the sliding tube groove, the reset spring drives the piston rod away from the fastener.

[0011] The present invention is further configured such that the sliding tube grooves A are all arranged to be inclined downward from the center of the limit groove on the upper side of the connecting seat.

[0012] The present invention is further configured such that the clamping head is spherical and made of a flexible material, the fitting surface is provided with a flexible metal sheet fitted with the clamping head, and the flexible metal sheet will deform when in close contact with the fastener.

[0013] The present invention is further configured such that the feeding mechanism includes a guide seat arranged above the adjusting track, the guide seat is composed of two guide blocks, and a guide groove corresponding to the limit groove is formed between the two blocks; the driving mechanism includes a sensor arranged on the connecting seat and an inductor arranged on the guide seat, the air pump is electrically connected to the control mechanism through the sensor, and when the connecting seat passes through the guide seat, the control mechanism controls the air pump to start supplying air to the air cavity.

[0014] The present invention is further configured such that the adjustment mechanism includes a plurality of through holes arranged through the mounting plate, and the plurality of through holes are circumferentially and equidistantly distributed on the edge of the mounting plate, a positioning wire tube is inserted into the through hole, one end of the positioning wire tube is plugged into the through hole, and the other end extends toward the connecting seat, the connecting seat is provided with a through hole extending into the limiting groove, and the positioning wire tube is plugged into and matched with the through hole on the connecting seat.

[0015] The present invention is further configured such that a positioning plate is detachably provided at the bottom of the connecting seat, a placement hole adapted to the end of the fastener facing the detection disk is opened in the middle of the positioning plate, and the end of the fastener facing the detection disk can be placed in the placement hole to achieve the fastener being supported by the positioning plate, and the positioning plate is made of a transparent acrylic sheet.

[0016] In summary, the beneficial effects of the present invention are: Compared with the prior art, the present application significantly improves the performance and application scope of the equipment by adding adjustment tracks, clamping components, and rotating components on the basis of the glass turntable. The equipment is equipped with a rotatable glass detection disk on the workbench, and a circular adjustment track is provided around the detection disk. Clamping blocks are installed on the adjustment track. The spacing between the clamping blocks can be dynamically adjusted by an adjustment mechanism, so as to meet the detection requirements of fasteners of different specifications and shapes. This design not only ensures the light transmission characteristics of the glass turntable, so that the bottom light source and camera can take high-definition photos of the bottom surface of the fastener, but also overcomes the problem that the smooth surface of the glass turntable easily causes the fastener to slide or deflect, and enhances the stability of the fastener during the detection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural diagram of this embodiment.

[0018] Figure 2 It is the internal structure diagram of this embodiment.

[0019] Figure 3It is a distribution diagram of the mechanism of this embodiment.

[0020] Figure 4 Schematic diagram of the feeding mechanism of this embodiment.

[0021] Figure 5 It is a structural diagram of the connecting socket of this embodiment.

[0022] Figure 6 This is the internal structure diagram of the connector.

[0023] Figure 7 yes Figure 6 An enlarged schematic diagram of .

[0024] Figure 8 It is a cross-sectional view of this embodiment.

[0025] Reference numerals: 100. Workbench; 200, turntable mechanism; 2, mounting plate; 3, testing plate; 4, adjusting track; 5. Clamping block; 51. Connecting seat; 52. Limiting groove; 53. Clamping assembly; 531. Sliding tube groove A; 532. Clamping head; 533. Fitting surface; 54, rotating assembly; 541, sliding pipe groove B; 542, driving head; 543, rotating disk; 544, rotating motor; 55, driving assembly; 551, air cavity; 552, air pump; 553, piston rod; 554, return spring; 6. Adjustment mechanism; 61. Through hole; 62. Positioning wire tube; 7. Driving motor; 8. Positioning sheet; 9. Placement hole; 300, feeding mechanism; 310, vibration plate; 320, feeding track; 330, guide seat; 331, guide block; 332, guide groove; 400, detection mechanism; 410, camera; 500, material removal mechanism; 510, air flow injection device; 600. unloading mechanism; 700. sensor; 800. inductor; 900. fastener. DETAILED DESCRIPTION

[0026] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0027] like Figure 1-8As shown, this embodiment discloses a fastener 900 detection device, including a workbench 100, on which a turntable mechanism 200 is rotatably arranged, and a feeding mechanism 300, a detection mechanism 400, a picking mechanism 500, a unloading mechanism 600 are sequentially arranged along the rotation path of the turntable, lighting modules distributed above and below the turntable mechanism 200, and a control mechanism connecting the above mechanisms and the turntable.

[0028] The turntable mechanism 200 includes a mounting plate 2 rotatably disposed on a workbench 100, a ring-shaped detection plate 3 made of glass is fixedly connected to the circumference of the mounting plate 2, a ring-shaped adjustment track 4 is disposed on the upper surface of the detection plate 3, a clamping block 5 for clamping a fastener 900 is disposed on the adjustment track 4, and an adjustment mechanism 6 for adjusting the spacing between a plurality of clamping blocks 5 is disposed on the mounting plate 2.

[0029] like Figure 2-3 As shown, the feeding mechanism 300 is a prior art, which is used to feed the fasteners 900 to the detection plate 3. The feeding mechanism 300 includes a vibration plate 310, a feeding track 320 and a guide seat 330. The vibration plate 310 is used to sort the scattered fasteners 900 in a unified direction and transport them to the top of the guide seat 330 through the feeding guide rail. The guide seat 330 is composed of two guide blocks 331, between which a guide groove 332 corresponding to the adjustment track 4 is formed, guiding the fasteners 900 to accurately enter the limit groove 52 of the clamping block 5 on the adjustment track 4; through the setting of the guide groove 332, the fasteners 900 can be guided to accurately enter the clamping block 5 and complete the initial positioning. The design of the feeding mechanism 300 ensures the stable feeding of the fasteners 900, effectively avoids problems such as leakage and disorder, and provides a stable material basis for subsequent detection links.

[0030] And as Figure 4 As shown, two guide blocks 331 are fixed on the guide seat 330 by bolts, and the position of one of the guide blocks 331 can be adjusted, so as to adjust the size of the guide groove 332 and adapt to fasteners 900 of different sizes.

[0031] At the same time, a sensor 700 connected to the control mechanism is provided on the clamping block 5, and a sensor 800 corresponding to the sensor 700 is provided on the guide seat 330. When the vibration plate 310 sends the fastener 900 to the clamping block 5 through the feeding track 320, the sensor 700 will be triggered by the sensor 800, and then the control mechanism will allow the clamping block 5 to clamp the fastener 900, and then it will be transported to the detection mechanism 400 through the installation plate 2.

[0032] like Figure 3As shown, the detection mechanism 400 is located above and below the glass detection plate 3, including a top camera 410, a side camera 410 and a bottom camera 410. The top camera 410 is used to collect the head image of the fastener 900 to detect its dimensional accuracy and surface defects; the side camera 410 cooperates with the rotating assembly 54 to collect multi-angle images of the fastener 900 around the side to achieve 360° surface feature detection; the bottom camera 410 combines the glass detection plate 3 and the bottom light source to collect high-definition images of the bottom of the fastener 900 and analyze its bottom surface flatness and defects. The detection mechanism 400 cooperates with the lighting module to operate. The lighting module can be an LED light strip set on the workbench 100. The light strip can provide fill light for the fastener 900. The top light source provides uniform fill light for the top camera 410. The bottom light source transmits light through the glass detection plate 3 to provide shadow-free lighting for the bottom camera 410. The reflector further enhances the uniformity of the illumination. This design significantly improves the clarity of image acquisition at each angle and ensures the accuracy and reliability of the detection results.

[0033] After the detection mechanism 400 detects the fastener 900, the data will be transmitted to the control mechanism, which connects the air pump 552 on the clamping block 5 and the material removal mechanism 500. The material removal mechanism 500 is set at the downstream position of the detection path, and is composed of an airflow injection device 510 and a rejection guide rail. The airflow injection device 510 is an injection pipe connected to the air pump 552. When the detection result determines that a fastener 900 is a defective product, the control mechanism starts the airflow injection device 510 and controls the air pump 552 to release the clamping block 5 to release the fastener 900. When the defective fastener 900 passes through the material removal mechanism 500, the airflow injection device 510 will remove the defective products from the clamping block 5 through high-speed airflow, and the rejection guide rail will transport the defective products to the waste box for centralized processing. The design of the material removal mechanism 500 ensures the quality purity of the production line and prevents defective products from entering the downstream process.

[0034] The unloading mechanism 600 is arranged after the rejecting mechanism 500, and is used to convey and classify the qualified fasteners 900. The unloading mechanism 600 has the same structure as the rejecting mechanism, and both are prior art. When the fastener 900 is delivered to the unloading mechanism 600, the control mechanism will control the air pump 552 to allow the connection seat 51 to release the fastener 900, and then the airflow injection device 510 of the unloading mechanism 600 will inject airflow to the fastener 900, so that the fastener 900 can smoothly output the qualified products through the unloading guide rail, and the sorting device automatically classifies the fastener 900 into different collection areas according to the specifications or models. This design not only realizes the efficient output of the fastener 900, but also facilitates the subsequent packaging or processing operations, further improving the production efficiency of the equipment.

[0035] And as Figure 3As shown, the turntable mechanism 200 includes a mounting plate 2 fixedly mounted on the workbench 100, the mounting plate 2 is driven by a driving motor 7 connected to the control mechanism, and a detection plate 3 made of glass is fixedly connected to the peripheral side of the mounting plate 2, the detection plate 3 is made of glass, and the light source at the bottom can be used to supplement the light for the fasteners 900 on the upper surface of the glass, so as to facilitate shooting and detection; and an annular adjustment track 4 is arranged on the upper surface of the detection plate 3, the adjustment track 4 is fixed on the detection plate 3 by glue or bolts, and the structure is simple, and it can avoid the damage of the detection plate 3 made of glass caused by too many structures of equipment on the glass material, and a plurality of clamping blocks 5 are installed on the adjustment track 4, and the staff can adjust the adjustment track 4 by the speed of the fasteners 900. The number of clamping blocks 5 on the road 4 can be adjusted; the clamping block 5 is connected to the mounting disk 2 through an adjusting mechanism 6, the adjusting mechanism 6 includes a plurality of through holes 61 arranged on the mounting disk 2, the through holes 61 are circumferentially and equidistantly distributed on the edge of the mounting disk 2, a positioning wire tube 62 is inserted into the through hole 61, one end of the positioning wire tube 62 is plugged into the through hole 61, and the other end extends to the direction of the connecting seat 51, the positioning wire tube 62 is plugged into the through hole 61 on the connecting seat 51, to ensure that the clamping block 5 can be accurately positioned during adjustment, and the positioning wire tube 62 is hollow, so that the wiring harness of the electrical components arranged on the clamping block 5 can be sent to the control mechanism at the bottom of the mounting disk 2 through the positioning wire tube 62, thereby realizing the electrical connection between the electrical components on the clamping block 5 and the control mechanism.

[0036] The control mechanism includes a central control unit, a sensor 700 module, and a drive control module. It also includes a display screen, which can display the current status of the device, test results, and an operation interface for the operator to view and monitor the operation status of the device. The display screen can be connected to input devices such as a keyboard to provide real-time feedback on various parameters of the device and provide an operation interface for the operator to make manual adjustments.

[0037] like Figure 5-8 As shown, the clamping block 5 includes a connecting seat 51 which is slidably connected to the adjusting rail 4, and a limiting groove 52 is provided on the connecting seat 51 which passes through from top to bottom, and an opening is provided at one end of the limiting groove 52 facing the edge of the detection disk 3; a clamping assembly 53 and a rotating assembly 54 are provided on the inner wall of the limiting groove 52, and the clamping assembly 53 is used to place the fastener 900 in a vertical state so that its peripheral side is parallel to the inner wall of the limiting groove 52, and the rotating assembly 54 is in close contact with the peripheral side of the fastener 900, and is used to drive the fastener 900 to rotate.

[0038] A plurality of sliding tube grooves A531 are embedded in the inner wall of the limiting groove 52; the clamping assembly 53 includes a clamping head 532 slidably arranged in the plurality of sliding tube grooves A531, and the end of the clamping head 532 is provided with a fitting surface 533 that fits with the circumference of the fastener 900; and also includes a driving assembly 55 that drives the clamping head 532 to move away from or close to the fastener 900 along the sliding tube groove A531.

[0039] A pair of sliding tube grooves B541 are embedded in the inner wall of the limiting groove 52, and the pair of sliding tube grooves B541 are symmetrically arranged and perpendicular to the inner wall of the limiting groove 52; the rotating component 54 includes a driving head 542 slidably arranged in the sliding tube groove B541, and the driving head 542 is rotatably connected to a rotating disk 543 that can fit the circumference of the fastener 900, and the rotating disk 543 is connected to a rotating motor 544 connected to the control mechanism; it also includes a driving component 55 that drives the driving head 542 to move away from or close to the fastener 900 along the sliding tube groove B541.

[0040] The driving assembly 55 includes an air cavity 551 arranged on the connecting seat 51 and an air pump 552 connected to the air cavity 551, the air pump 552 is connected to the control mechanism and is connected to the sliding tube groove A531 and the sliding tube groove B541 through the air cavity 551; it also includes a piston rod 553 arranged in the sliding tube groove A531 and the sliding tube groove B541, the piston rod 553 is respectively connected to the driving head 542 and the clamp, when the connecting seat 51 passes through the feeding mechanism 300, the air pump 552 inflates the air cavity 551 to drive the piston rod 553 to move toward the fastener 900; it also includes a return spring 554 arranged between the piston rod 553 and the sliding tube groove, the return spring 554 drives the piston rod 553 away from the fastener 900.

[0041] The limiting groove 52 provided on the connection seat 51 is provided with an opening at one end thereof facing the edge of the detection disk 3, which can accommodate the fastener 900 and ensure that it will not slide or deviate during the detection process. The inner wall of the limiting groove 52 is embedded with a plurality of sliding tube grooves A531, and the clamping assembly 53 includes a clamping head 532 slidably provided in the sliding tube groove A531, and the end of the clamping head 532 is designed to be a fitting surface 533 that fits the circumference of the fastener 900. This design ensures that the clamping head 532 can automatically adjust the clamping force according to the shape of the fastener 900 and keep the fastener 900 in a vertical state.

[0042] The clamping head 532 is spherical and made of flexible material, and a flexible metal sheet is provided on the fitting surface 533 to fit the clamping head 532. The metal sheet will deform when it is in close contact with the fastener 900, thereby enhancing the stability of the clamping. At the same time, the flexible clamping head 532 can adapt to fasteners 900 of different shapes and structures, thereby ensuring the stability of the clamping; and the provision of the flexible metal sheet can reduce the friction between the fitting surface 533 and the fastener 900 when the rotating assembly 54 drives the fastener 900 to rotate, thereby ensuring the smooth rotation of the fastener 900.

[0043] The driving of the clamping assembly 53 is connected to the air pump 552 through the air cavity 551, and the air pump 552 is connected to the control mechanism, and air is supplied to the sliding groove A531 and the sliding groove B541 through the air cavity 551, thereby driving the clamping head 532 to move along the sliding groove A531. The return spring 554 is located between the piston rod 553 and the sliding groove. When the gas in the air cavity 551 is released, the return spring 554 drives the piston rod 553 away from the fastener 900 to achieve automatic return.

[0044] A pair of sliding tube grooves B541 are also designed in the limiting groove 52, and the sliding tube grooves B541 are arranged vertically and symmetrically with the limiting groove 52. The rotating assembly 54 includes a driving head 542 arranged in the sliding tube groove B541, and a rotating disk 543 that can fit the circumference of the fastener 900 is rotatably connected to the driving head 542. The rotating disk 543 is connected to the control mechanism, and the rotating motor 544 drives the rotating disk 543 to rotate, driving the fastener 900 to rotate. The design of this rotating assembly 54 enables the fastener 900 to rotate 360° during the inspection process, ensuring that all surfaces of its circumference can be fully inspected, especially playing an important role in the inspection of threaded parts, grooves and surface defects. The coordinated work of the rotating assembly 54 and the clamping assembly 53 ensures that the fastener 900 can remain stable during the inspection process and rotate at the same time, thereby ensuring all-round and blind-spot-free inspection.

[0045] The pneumatic design of the drive assembly 55 makes the adjustment process of the clamping assembly 53 smoother and more responsive. Since the pneumatic system can achieve stepless adjustment, the adjustment of the clamping head 532 can be very precise, thereby adapting to fasteners 900 of different sizes and shapes, ensuring that the fasteners 900 can be stably fixed during each inspection. In addition, the airflow control system of the air cavity 551 can quickly complete the reset of the clamping head 532. When the gas pressure is released, the reset spring 554 allows the clamping head 532 to return to the initial position and recover quickly, avoiding jamming or misoperation caused by the inability to reset the clamping head 532 in time.

[0046] The driving of the rotating assembly 54 is also controlled by the air pump 552, and the air pressure provided by the air cavity 551 drives the rotating disk 543 to rotate around the fastener 900. This design can ensure that the fastener 900 rotates 360° during the detection process, thereby achieving comprehensive detection of various surfaces of the fastener 900, especially small parts such as threads and grooves. The coordinated work of the rotating assembly 54 and the clamping assembly 53 allows the rotating disk 543 to fit tightly with the fastener 900, avoiding possible deviation and vibration during the rotation process, ensuring smooth rotation without affecting the detection effect.

[0047] The advantages of pneumatic drive are reflected in many aspects. First, its response speed is very fast, and the force and speed of clamping and rotation can be adjusted in a short time, ensuring that the detection process is efficient and accurate. Secondly, the stability of the pneumatic system greatly reduces the friction and vibration in the traditional mechanical drive system, avoids the equipment wear caused by the friction of mechanical parts, and improves the stability and durability of the equipment. In addition, compared with the electric drive system, pneumatic drive is simpler and more reliable, which can reduce the frequency of system failures, reduce maintenance costs and equipment downtime.

[0048] like Figure 7-8 As shown, the sliding tube grooves A531 are all arranged obliquely downward from the center of the limit groove 52 on the connecting seat 51.

[0049] The sliding tube groove A531 is tilted downward. The tilted sliding tube groove controls the movement trajectory of the clamping head 532, making it more stable during the clamping process, reducing the error caused by instability, ensuring that the fastener 900 can be kept in a vertical state and accurately clamped. In addition, the tilt angle of the sliding tube groove enables the clamping head 532 to more accurately adjust its clamping force and contact position when clamping the fastener 900. The tilted sliding tube groove A531 ensures that the moving direction of the clamping head 532 is more in line with the structural requirements of the fastener 900, so that the clamping head 532 is closely fitted with the peripheral surface of the fastener 900, thereby improving the stability and accuracy of clamping.

[0050] At the same time, due to the inclination of the sliding tube groove A531, the position and angle of the clamping head 532 can more naturally make the bottom of the fastener 900 contact the glass surface when clamping the fastener 900, thereby achieving a state in which the bottom of the fastener 900 is close to the glass surface, facilitating the detection mechanism 400 to accurately detect the bottom of the fastener 900.

[0051] In order to ensure stable clamping of the fastener 900 , a plurality of sliding tube grooves A531 and clamping heads 532 located around the fastener 900 may be provided on the inner wall of the limiting groove 52 , thereby ensuring stable clamping of the fastener 900 .

[0052] like Figure 6 As shown, the bottom of the connection seat 51 is detachably provided with a positioning piece 8, and a placement hole 9 adapted to one end of the fastener 900 facing the detection disk 3 is provided in the middle of the positioning piece 8, and the end of the fastener 900 facing the detection disk 3 can be placed in the placement hole 9 to achieve the fastener 900 being supported by the positioning piece 8, and the positioning piece 8 is made of a transparent acrylic sheet. The design of the positioning piece 8 plays an important role in ensuring that the fastener 900 is stably supported and accurately positioned during the detection process. A placement hole 9 adapted to one end of the fastener 900 facing the detection disk 3 is provided in the middle of the positioning piece 8, and this placement hole 9 can accommodate the bottom of the fastener 900, so that the fastener 900 is stably placed on the detection disk 3. Through this design, the alignment of the fastener 900 with the detection disk 3 is achieved, ensuring the stability of the fastener 900 during the detection process, and avoiding the detection error caused by the position offset or instability of the fastener 900.

[0053] The positioning sheet 8 is made of a transparent acrylic sheet, and this material selection has an important technical effect. Acrylic, as a transparent material, can provide sufficient support without affecting light transmission, thereby ensuring that the bottom of the fastener 900 is always in contact with the glass detection plate 3. The transparent acrylic sheet can not only support the fastener 900, but also allow the light from the bottom light source to pass through, avoiding light blocking caused by the opacity of the supporting material, and ensuring that the bottom camera 410 can clearly obtain the image of the bottom surface of the fastener 900 during detection.

[0054] In addition, the detachable design of the positioning piece 8 makes the device more flexible and easy to maintain in practical applications. When it is necessary to replace the detection parts or adjust the placement of the fastener 900, the user can easily remove the positioning piece 8 for adjustment and cleaning. The detachable design improves the operability of the device, especially in the detection process of fasteners 900 of multiple specifications or models, it can quickly adapt to the placement requirements of different fasteners 900.

[0055] At the same time, the placement hole 9 on the positioning plate 8 can ensure that some fasteners 900 with irregular bottom shapes that cannot be stably placed on the glass surface are stably and vertically placed on the glass surface, preventing the fastener 900 from falling when the connecting seat 51 releases the clamping of the fastener 900.

[0056] Working principle: After the equipment is started, the feeding mechanism 300 is first operated. The vibration plate 310 plays a role, arranging the originally disordered fasteners 900 in an orderly manner in a unified direction, and continuously conveying them to the top of the guide seat 330 through the feeding track 320. The guide seat 330 is composed of two guide blocks 331, and a specific guide groove 332 is formed between them. Among them, the position of a guide block 331 is adjustable, so that the size of the guide groove 332 can be changed to adapt to fasteners 900 of different sizes. The guide groove 332 corresponds to the limit groove 52 of the clamping block 5 on the detection plate 3, and its function is to accurately guide the fastener 900 into the clamping block 5 and complete the preliminary positioning. When the clamping block 5 moves to the position of the guide seat 330, the sensor 700 set on the clamping block 5 will be triggered by the sensor 800 on the guide seat 330, and then send a signal to the control mechanism. After receiving the signal, the control mechanism immediately issues an instruction to let the clamping block 5 clamp the fastener 900.

[0057] Then, the turntable mechanism 200 starts to rotate at a constant speed driven by the driving motor 7. The glass detection plate 3 fixedly mounted on the side of the mounting plate 2 of the workbench 100 rotates synchronously, thereby driving the clamping block 5 clamping the fastener 900 to pass through the detection mechanism 400 in sequence along the preset rotation path.

[0058] The detection mechanism 400 includes a top camera 410, a side camera 410 and a bottom camera 410 located above and below the glass detection plate 3. The top camera 410 is mainly responsible for collecting images of the head of the fastener 900 for detecting its dimensional accuracy and whether there are defects on the surface; the side camera 410 cooperates with the rotating assembly 54, and collects images of multiple angles around the fastener 900 during the process of the rotating assembly 54 driving the fastener 900 to rotate, so as to achieve 360° all-round surface feature detection of the fastener 900; the bottom camera 410 uses the light transmittance of the glass detection plate 3 and the bottom light source to clearly collect images of the bottom of the fastener 900 to analyze the flatness of its bottom surface and whether there are defects. In the detection process, the lighting module plays a vital role. The LED light strip set on the workbench 100 as part of the lighting module provides sufficient and uniform fill light for the fastener 900. The top light source provides uniform and soft light for the top camera 410 to ensure that the collected head image is clear and accurate. The bottom light source transmits light through the glass detection plate 3, creating a shadow-free lighting environment for the bottom camera 410. Combined with the effect of the reflector, the uniformity of the lighting is further enhanced, which greatly improves the clarity of image acquisition at all angles, providing a strong guarantee for the accuracy and reliability of the detection results.

[0059] After the test is completed, the data obtained from the test will be quickly transmitted to the control mechanism. The control mechanism analyzes and processes these data. If a fastener 900 is determined to be a defective product, when the clamping block 5 holding the defective product passes through the material removal mechanism 500, the control mechanism will simultaneously start two actions: one is to start the airflow injection device 510, and the other is to control the release of the air pump 552 so that the clamping block 5 loosens the clamping of the fastener 900. At this time, the high-speed airflow generated by the airflow injection device 510 will forcefully remove the defective fasteners 900 from the clamping block 5, and the rejected defective products will slide along the rejection guide rail to the waste box for centralized processing. The design of this material removal mechanism 500 effectively ensures the quality purity of the products on the production line and prevents defective products from entering the subsequent production process.

[0060] If the fastener 900 that has been tested is determined to be a qualified product, when the clamping block 5 passes through the unloading mechanism 600, the control mechanism will control the air pump 552 to allow the connecting seat 51 to release the clamping of the fastener 900. Then, the airflow injection device 510 of the unloading mechanism 600 will spray airflow to the fastener 900, pushing the qualified products to be smoothly output along the unloading guide rail. At the same time, the sorting device will automatically classify the fasteners 900 into different collection areas according to their specifications or models. This design not only achieves efficient output of qualified products, but also facilitates subsequent packaging or further processing operations, significantly improving the overall production efficiency of the equipment.

[0061] Let's look at the working principle of the clamping block 5. When the connecting seat 51 passes through the feeding mechanism 300, the air pump 552 starts to inflate the air cavity 551. The pressure of the gas pushes the piston rod 553 in the air cavity 551 to move, and the piston rod 553 then pushes the clamping head 532 and the driving head 542 to approach the fastener 900. The clamping head 532 adopts a spherical design and is made of a flexible material. The fitting surface 533 at its end can automatically adjust the clamping force according to the shape of the fastener 900. The flexible metal sheet set on the fitting surface 533 will produce appropriate deformation when it is in close contact with the fastener 900, further enhancing the stability of the clamping. At the same time, the flexible clamping head 532 can adapt to fasteners 900 of different shapes and structures, ensuring the stability of the clamping. The presence of the flexible metal sheet can effectively reduce the friction between the fitting surface 533 and the fastener 900 when the rotating assembly 54 drives the fastener 900 to rotate, ensuring the smoothness of the fastener 900 rotation.

[0062] In addition, the driving head 542 in the rotating assembly 54 is driven by the air pump 552 to approach the fastener 900 through the sliding pipe groove B. The rotating disk 543 rotatably connected to the driving head 542 is tightly fitted with the circumference of the fastener 900, and the fastener 900 is driven to rotate by the rotating motor 544. The design of this rotating assembly 54 enables the fastener 900 to rotate 360° in all directions during the inspection process, ensuring that all surfaces of the circumference, especially the threaded parts, grooves and minor surface defects, can be fully and carefully inspected. The rotating assembly 54 and the clamping assembly 53 work together to not only ensure that the fastener 900 remains stable during the inspection process, but also realize the self-rotation of the fastener 900, thereby ensuring all-round inspection without blind spots.

[0063] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the design concept of the present invention should be included in the protection scope of the present invention.

Claims

1. A fastener detection device, comprising a workbench (100), a turntable mechanism (200) being rotatably arranged on the workbench (100), and a feeding mechanism (300), a detection mechanism (400), a material removal mechanism (500), a material discharge mechanism (600) being sequentially arranged along a rotation path of the turntable, a lighting module distributed above and below the turntable mechanism (200), and a control mechanism connecting the above mechanisms and the turntable; characterized in that: The turntable mechanism (200) comprises a mounting plate (2) rotatably mounted on a workbench (100); a ring-shaped detection plate (3) made of glass is fixedly connected to the circumference of the mounting plate (2); a ring-shaped adjustment track (4) is arranged on the upper surface of the detection plate (3); a clamping block (5) for clamping a fastener (900) is arranged on the adjustment track (4); and an adjustment mechanism (6) for adjusting the spacing between a plurality of clamping blocks (5) is arranged on the mounting plate (2).

2. A fastener detection device according to claim 1, characterized in that: The clamping block (5) comprises a seat (51) connected to the adjustment track (4); the connecting seat (51) is provided with a limit groove (52) penetrating from top to bottom; an end of the limit groove (52) facing the edge of the detection plate (3) is provided with an opening; the inner wall of the limit groove (52) is provided with a clamping assembly (53) and a rotating assembly (54); the clamping assembly (53) is used to place the fastener (900) in a vertical state so that its peripheral side is parallel to the inner wall of the limit groove (52); the rotating assembly (54) is in close contact with the peripheral side of the fastener (900) and is used to drive the fastener (900) to rotate.

3. A fastener detection device according to claim 2, characterized in that: The inner wall of the limiting groove (52) is embedded with a plurality of sliding tube grooves A (531); the clamping assembly (53) comprises a clamping head (532) slidably arranged in the plurality of sliding tube grooves A (531), and the end of the clamping head (532) is provided with a fitting surface (533) fitted with the peripheral side of the fastener (900); and also comprises a driving assembly (55) for driving the clamping head (532) to move away from or approach the fastener (900) along the sliding tube grooves A (531).

4. A fastener detection device according to claim 3, characterized in that: A pair of sliding tube grooves B (541) are embedded in the inner wall of the limiting groove (52), and the pair of sliding tube grooves B (541) are symmetrically arranged and perpendicular to the inner wall of the limiting groove (52); the rotating assembly (54) comprises a driving head (542) slidably arranged in the sliding tube groove B (541), a rotating disk (543) rotatably connected to the driving head (542) and capable of being in contact with the circumference of the fastener (900), and the rotating disk (543) is connected to a rotating motor (544) connected to a control mechanism; and also comprises a driving assembly (55) for driving the driving head (542) to move away from or approach the fastener (900) along the sliding tube groove B (541).

5. A fastener detection device according to claim 4, characterized in that: The driving assembly (55) comprises an air cavity (551) arranged on the connecting seat (51) and an air pump (552) connected to the air cavity (551); the air pump (552) is connected to the control mechanism and is connected to the sliding tube groove A (531) and the sliding tube groove B (541) through the air cavity (551); it also comprises a piston rod (553) arranged in the sliding tube groove A (531) and the sliding tube groove B (541); the piston rod (553) is respectively connected to the driving head (542) and the clamp; when the connecting seat (51) passes through the feeding mechanism (300), the air pump (552) inflates the air cavity (551) to drive the piston rod (553) to move toward the fastener (900); it also comprises a return spring (554) arranged between the piston rod (553) and the sliding tube groove; the return spring (554) drives the piston rod (553) away from the fastener (900).

6. A fastener detection device according to claim 3 or 5, characterized in that: The sliding tube grooves A (531) are all arranged from the upper side of the connection seat (51) to the center of the limit groove (52) and inclined downward.

7. A fastener detection device according to claim 6, characterized in that: The clamping head (532) is spherical and made of a flexible material, the fitting surface (533) is arc-shaped and is provided with a flexible metal sheet fitted with the clamping head (532), and the flexible metal sheet will deform when in close contact with the fastener (900).

8. The fastener detection device according to claim 5, characterized in that: The feeding mechanism (300) comprises a guide seat (330) arranged above the adjustment track (4), the guide seat (330) comprising two guide blocks (331), a guide groove (332) corresponding to the limit groove (52) being formed between the two guide blocks; the driving mechanism comprises a sensor (700) arranged on the connecting seat (51) and a sensor (800) arranged on the guiding seat (330), the air pump (552) being electrically connected to the control mechanism via the sensor (700), and when the connecting seat (51) passes the guide seat (330), the control mechanism controls the air pump (552) to start supplying air to the air cavity (551).

9. A fastener detection device according to any one of claims 2-5, 7-8, characterized in that: The adjustment mechanism (6) comprises a plurality of through holes (61) provided on the mounting plate (2), the plurality of through holes (61) being equidistantly distributed around the edge of the mounting plate (2), a positioning wire tube (62) being inserted into the through hole (61), one end of the positioning wire tube (62) being plugged into the through hole (61), and the other end extending toward the connecting seat (51), the connecting seat (51) being provided with a through hole (61) extending into the limiting groove (52), the positioning wire tube (62) being plugged into and matched with the through hole (61) on the connecting seat (51).

10. The fastener detection device according to claim 8, characterized in that: A positioning sheet (8) is detachably provided at the bottom of the connection seat (51); a placement hole (9) adapted to the end of the fastener (900) facing the detection disk (3) is provided in the middle of the positioning sheet (8); the end of the fastener (900) facing the detection disk (3) can be placed in the placement hole (9) so that the fastener (900) is supported by the positioning sheet (8); and the positioning sheet (8) is made of a transparent acrylic sheet.

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