Fastener gluing detection device

Abstract

The fastener gluing detection device comprises a transmission track and two sets of CCD camera assemblies, the transmission track is provided with a sliding groove matched with the outline of a nut of a fastener, the cross section of the sliding groove is in a T shape, the sliding groove is provided with an opening for a threaded shaft part of the fastener to stretch out, the transmission track comprises a horizontal section and a ramp section, the ramp section is provided with a defective product screening branch track, and the defective product screening branch track is provided with a detection module. A screening mechanism is arranged at the junction of the ramp section and the defective product screening branch rail; the two groups of CCD camera assemblies are arranged at intervals along the horizontal section, respectively collect images of two symmetrical side surfaces of the fastener, and transmit the images to the computer image processing software; the screening mechanism is in signal linkage with a computer and guides the fasteners to enter the ramp section or the defective product screening branch rail. And when the defective fasteners are judged out, the screening mechanism is controlled to operate, and the good fasteners and the defective fasteners are separated. And through the design of the screening mechanism and the power-assisted air blowing pipe, defective products are accurately screened.

Description

Technical Field

[0001] The utility model relates to the technical field of fastener production equipment, in particular to a fastener gluing detection device. Background Art

[0002] Chemical glue used for fasteners and screws is usually called fastening glue or anaerobic sealant. This glue is mainly used to ensure that the screws do not fall off during operation.

[0003] During the gluing process, the fasteners are transported to the transmission track by a feeding device such as a vibrating plate, and are transported in a single row to the glue spraying device to be sprayed with chemical glue, which covers the threaded part of the fasteners.

[0004] In order to inspect large quantities of glue-coated fasteners, existing technology usually uses CCD inspection equipment to perform visual inspection of the glue coating status of the fasteners. That is, a CCD camera is used to capture the path status image of the fastener thread part. After image processing, specific features and information in the image are extracted according to the required inspection task to determine whether the target meets the predetermined standards.

[0005] A problem with existing technologies is that there are multiple methods for applying glue to fasteners, such as partial or full coating, resulting in differences in the location and size of the glue applied to the threads of the fasteners. Current designs for CCD cameras and automated fastener gluing equipment also suffer from the problem of the CCD camera not fully capturing the required image.

[0006] Moreover, after CCD inspection, fasteners will be screened out into good and defective products, and the two types of fasteners need to be separated and classified. However, the existing design often causes fasteners to be incorrectly screened during the screening process due to the uneven transmission process of fasteners, such as frequent track jams.

[0007] Therefore, it is necessary to improve the design of the existing fastener gluing detection device and optimize the CCD camera design so that the image information of the fasteners can be fully collected even if the gluing position and area change; and optimize the screening structure design for good and bad products to make the screening more accurate and smooth. Utility Model Content

[0008] In order to solve the deficiencies of the above-mentioned technology, the utility model provides a fastener gluing detection device.

[0009] The utility model is further provided with: a fastener gluing detection device, comprising a transmission track and two sets of CCD camera assemblies, wherein the transmission track is provided with a slide groove adapted to the profile of the nut of the fastener, the slide groove having a T-shaped cross section and an opening for the threaded shaft of the fastener to extend, the transmission track comprising a horizontal section and a ramp section, the ramp section being provided with a defective product screening support rail, and a screening mechanism being provided at the intersection of the ramp section and the defective product screening support rail;

[0010] The two groups of CCD camera assemblies are spaced apart along the horizontal section and respectively capture images of two symmetrical sides of the fastener and transmit them to computer image processing software;

[0011] The screening mechanism is linked with computer signals to guide the fasteners into the ramp section or the defective product screening rail.

[0012] Using the above technical solution, two sets of CCD camera assemblies are spaced and symmetrically arranged on both sides of the horizontal section of the transmission track to comprehensively capture the gluing status of the threaded shaft of the fastener. Computer image processing software performs various processing operations such as geometric position confirmation, feature extraction, defect identification, etc. based on the collected fastener gluing status images to determine whether the fastener gluing status meets the process standards.

[0013] Similarly, multiple groups of CCD camera assemblies can be arranged along the horizontal section so that the shooting angles complement each other and the required complete image is obtained.

[0014] When the computer identifies defective fasteners, it controls the operation of the screening mechanism to separate good and defective fasteners.

[0015] The utility model is further configured as follows: a notch is provided at the junction of the ramp section and the defective product screening branch rail, and a rotation hole penetrating the transmission rail is provided at the bottom of the notch;

[0016] The screening mechanism includes a PLC controller, a swing arm, a first drive element, and a transmission assembly. The profile of the swing arm is adapted to the profile of the notch, and is provided with a rotating shaft that passes through the rotary hole to the outside of the transmission track. The rotating shaft and the rotary hole are in rotational cooperation. The first drive element, the transmission assembly, and the rotating shaft are linked and cooperated to drive the swing arm to splice with the notch or flip toward the ramp section of the transmission track, thereby guiding the fasteners in the ramp section into the defective product screening branch rail.

[0017] The PLC controller controls the opening and closing of the first driving element according to the signal of the computer image processing software, thereby controlling the flipping position of the swing arm member.

[0018] By adopting the above technical solution, the swing arm is controlled to flip to two positions to fit with the notch or flip toward the ramp section of the transmission track, as shown in the attached manual. Figure 2 、 3 As shown, Figure 2 When the middle swing arm is assembled with the notch, the swing arm fills the gap, allowing the good fasteners to slide down the ramp section smoothly and be discharged; Figure 3 The middle swing arm part flips toward the ramp section of the transmission track to guide the defective fasteners into the defective screening branch rail.

[0019] The drive element that drives the swing arm's reciprocating motion is conventional, employing conventional components such as stepper motors. The same applies to the transmission assembly, which utilizes conventional gears and sprockets on the shaft and motor output shaft to achieve the desired swing arm motion. A through-hole allows the shaft to extend beyond the transmission track, connecting to the transmission assembly and drive element, optimizing space and preventing interference with fastener transmission.

[0020] The utility model is further configured as follows: the outline of the swing arm is a parallelogram, including a hinged end and a swinging end; the rotating shaft is arranged on a side close to the hinged end; the swinging end faces the moving direction of the fastener; and the angle of the side of the swinging end close to the ramp section is an acute angle.

[0021] Adopting the above technical solution, as shown in the accompanying drawings of the specification, the swing arm is set to a parallelogram structure. Figure 2 When the middle is joined with the notch, the bevel of the swing arm is used to form a limiting effect with the edge of the notch. Figure 3 The middle swing arm swings into the T-shaped slide and touches its inner wall, which also forms a limiting effect, thereby controlling the stroke.

[0022] A further configuration of the present invention is that the device further comprises an air blowing pipe, which is arranged at the junction of the horizontal section and the ramp section, and blows out air to push the fastener into the ramp section and slide down.

[0023] Using this technical solution, a train of multiple fasteners is transported simultaneously along the conveyor track. During transport, if the leading fastener gets stuck in the track, it can come into contact with the trailing fastener, causing fluctuations in the fastener's movement rate and making it difficult for the screening mechanism to accurately filter out defective items. Therefore, an air blow pipe is installed at the junction of the horizontal section and the ramp. The leading fastener enters the ramp first, where air is blown to accelerate it, increasing the distance between it and the trailing fastener, creating a time difference and ensuring accurate screening by the screening mechanism.

[0024] Further configuration of the present invention: the device also includes an adjustment mechanism arranged between the two groups of CCD camera assemblies, the adjustment mechanism includes a turntable and a second driving element, the outer peripheral surface of the turntable and the outer peripheral surface of the threaded shaft portion extending from the fastener on the horizontal section are engaged in rolling friction, and the driving element is linked with the turntable to drive the turntable to rotate a certain angle, thereby driving the fastener to rotate a certain angle.

[0025] By adopting the above technical solution, the turntable is provided to drive the fastener to rotate at a certain angle so as to meet the needs of the CCD to shoot the local glue-coated area at different angles.

[0026] The beneficial effects of this utility model are as follows: CCD camera assemblies installed on both sides of the horizontal section of the transmission track comprehensively capture the gluing status of the fastener threaded shaft. Computer image processing software uses the captured fastener gluing status images to identify defective fasteners and control the operation of the screening mechanism to separate good and defective fasteners. Through the design of the screening mechanism and the auxiliary air blowing pipe, defective products can be accurately screened. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The structure of the embodiment of the utility model Figure 1 ;

[0028] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0029] Figure 3 The structure of the embodiment of the utility model Figure 2 ;

[0030] Figure 4 The structure of the embodiment of the utility model Figure 3 ;

[0031] Figure 5 The structure of the embodiment of the utility model Figure 4 .

[0032] Among them, 1-fastener, 11-slide groove, 12-opening, 13-horizontal section, 14-ramp section, 15-defective product screening support rail, 16-notch, 17-rotating hole, 2-CCD camera assembly, 3-swing arm, 31-rotating shaft, 4-blowing pipe, 51-turntable, 52-second driving element.

[0033] In order to better illustrate this embodiment, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. In addition, the drawings are only used for illustrative purposes and should not be understood as limitations on this patent. DETAILED DESCRIPTION

[0034] To make the technical solution and its advantages of the present application clearer, the technical solution of the present application will be described in further detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only some embodiments of the present application and are only used to explain the present application, not to limit the present application. It should be noted that, for ease of description, only the parts related to the present application are shown in the accompanying drawings, and other related parts can refer to the general design. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other to obtain new embodiments.

[0035] The present invention is described in detail below with reference to the accompanying drawings. Figure 1-5 As shown,

[0036] The device for inspecting the gluing of fasteners 1 includes a transmission track and two sets of CCD camera assemblies 2. The transmission track is provided with a chute 11 adapted to the profile of the nut of the fastener 1. The chute 11 has a T-shaped cross-section and an opening 12 for the threaded shaft of the fastener 1 to extend. The transmission track includes a horizontal section 13 and a ramp section 14. The ramp section 14 is provided with a defective product screening rail 15. A screening mechanism is provided at the intersection of the ramp section 14 and the defective product screening rail 15.

[0037] The two groups of CCD camera assemblies 2 are spaced apart along the horizontal section 13 and respectively capture images of two symmetrical sides of the fastener 1 and transmit them to computer image processing software;

[0038] The screening mechanism is linked to the computer signal to guide the fasteners 1 into the ramp section 14 or the defective product screening rail 15.

[0039] Two sets of CCD camera assemblies 2, spaced and symmetrically positioned on either side of the horizontal section 13 of the conveyor track, comprehensively capture the gluing status of the threaded shaft of the fastener 1, avoiding interference between light sources and image quality degradation caused by a directly symmetrical setup. Computer image processing software then performs various processing operations on the captured images of the gluing status of the fastener 1, such as confirming its geometric position, extracting features, and identifying defects, to determine whether the gluing status of the fastener 1 meets process standards.

[0040] Similarly, multiple groups of CCD camera assemblies 2 can be arranged along the horizontal section 13 so that the shooting angles complement each other and the required complete image is obtained.

[0041] When the computer determines that the defective fasteners 1 are defective, it controls the operation of the screening mechanism to separate the good and defective fasteners 1.

[0042] A notch 16 is provided at the junction of the ramp section 14 and the defective product screening support rail 15, and a rotation hole 17 penetrating the transmission track is provided at the bottom of the notch 16;

[0043] The screening mechanism includes a PLC controller, a swing arm 3, a first drive element, and a transmission assembly. The profile of the swing arm 3 is adapted to the profile of the notch 16, and is provided with a rotating shaft 31 that passes through the rotating hole 17 to the outside of the transmission track. The rotating shaft 31 is rotated with the rotating hole 17. The first drive element, the transmission assembly, and the rotating shaft 31 are linked to drive the swing arm 3 to splice with the notch 16 or flip into the ramp section 14 of the transmission track, thereby guiding the fasteners 1 in the ramp section 14 into the defective product screening branch rail 15;

[0044] The PLC controller controls the opening and closing of the first driving element according to the signal of the computer image processing software, thereby controlling the flipping position of the swing arm member 3.

[0045] By controlling the swing arm 3 to flip to the two positions of splicing with the notch 16 or flipping toward the ramp section 14 of the transmission track, as shown in the appendix of the manual, Figure 2 、 3 As shown, Figure 2 When the middle swing arm 3 is assembled with the notch 16, the swing arm 3 fills the notch 16, allowing the good fastener 1 to slide down the ramp section 14 smoothly and be discharged; Figure 3 The middle swing arm 3 turns over toward the ramp section 14 of the transmission track to guide the defective fasteners 1 into the defective screening branch rail 15 .

[0046] The drive element that drives the swing arm back and forth is conventional, employing conventional elements such as a stepper motor. The same applies to the transmission assembly. Conventional gears, sprockets, and other transmission methods can be employed on the rotating shaft 31 and the motor output shaft to achieve the desired swing arm motion. A through-hole 17 allows the rotating shaft 31 to extend beyond the transmission track and connect to the transmission assembly and drive element, optimizing space and preventing interference with the transmission of the fastener 1.

[0047] The outline of the swing arm 3 is a parallelogram, including a hinged end and a swinging end. The rotating shaft 31 is arranged on a side close to the hinged end. The swinging end faces the moving direction of the fastener 1, and the angle of the swinging end relative to the ramp section 14 is an acute angle.

[0048] As shown in the accompanying drawings, the swing arm 3 is configured as a parallelogram structure. Figure 2 When the middle is assembled with the notch 16, the bevel of the swing arm 3 is used to form a limiting effect with the edge of the notch 16, and Figure 3 The middle swing arm 3 swings toward the inside of the T-shaped slide 11 and touches the inner wall thereof, thereby forming a limiting effect and controlling the stroke.

[0049] The device further comprises an air blowing pipe 4 , which is arranged at the junction of the horizontal section 13 and the ramp section 14 and blows out air to push the fastener 1 into the ramp section 14 and slide down.

[0050] A row of multiple fasteners 1 are transported simultaneously along the conveyor track. During transport, if a leading fastener 1 gets stuck in the track, it can come into contact with the trailing fastener 1, causing fluctuations in the speed of the fasteners 1 and making it difficult for the screening mechanism to accurately screen out defective items. Therefore, an air blow pipe 4 is installed at the junction of the horizontal section 13 and the ramp section 14. The leading fastener 1 enters the ramp section 14 first, where air is blown into it, accelerating it and increasing the distance between it and the trailing fastener 1, creating a time difference and ensuring accurate screening by the screening mechanism.

[0051] The device also includes an adjustment mechanism arranged between the two groups of CCD camera assemblies 2, and the adjustment mechanism includes a turntable 51 and a second driving element 52. The outer peripheral surface of the turntable 51 is in rolling friction engagement with the outer peripheral surface of the threaded shaft portion extending from the fastener 1 on the horizontal section 13. The driving element cooperates with the turntable 51 to drive the turntable 51 to rotate a certain angle, thereby driving the fastener 1 to rotate a certain angle.

[0052] The rotating disk 51 is provided to drive the fastener 1 to rotate at a certain angle so as to meet the needs of the CCD to shoot the local glue-coated area at different angles.

[0053] CCD camera assemblies 2, located on both sides of the horizontal section 13 of the conveyor track, comprehensively capture the gluing status of the threaded shafts of fasteners 1. Computer image processing software uses these captured images of the gluing status of fasteners 1 to identify defective fasteners 1 and control the operation of the screening mechanism to separate good and defective fasteners 1. The design of the screening mechanism and the air-assisted blowing pipe 4 ensures precise screening of defective fasteners.

[0054] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. Those skilled in the art should understand that the scope of protection of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or replacements to the relevant technical features, and the technical solutions after these changes or replacements will fall within the scope of protection of the present application.

Claims

1. Fastener gluing detection device, characterized by: The system comprises a transmission track and two sets of CCD camera assemblies. The transmission track is provided with a slide groove adapted to the profile of the nut of the fastener. The slide groove has a T-shaped cross section and an opening for the threaded shaft of the fastener to extend. The transmission track comprises a horizontal section and a ramp section. The ramp section is provided with a defective product screening rail. A screening mechanism is provided at the intersection of the ramp section and the defective product screening rail. The two groups of CCD camera assemblies are spaced apart along the horizontal section and respectively capture images of two symmetrical sides of the fastener and transmit them to computer image processing software; The screening mechanism is linked with computer signals to guide the fasteners into the ramp section or the defective product screening rail.

2. The fastener glue coating detection device according to claim 1, characterized in that: A notch is provided at the junction of the ramp section and the defective product screening branch rail, and a rotation hole penetrating the transmission track is provided at the bottom of the notch; The screening mechanism includes a PLC controller, a swing arm, a first drive element, and a transmission assembly. The profile of the swing arm is adapted to the profile of the notch, and is provided with a rotating shaft that passes through the rotary hole to the outside of the transmission track. The rotating shaft and the rotary hole are in rotational cooperation. The first drive element, the transmission assembly, and the rotating shaft are linked and cooperated to drive the swing arm to splice with the notch or flip toward the ramp section of the transmission track, thereby guiding the fasteners in the ramp section into the defective product screening branch rail. The PLC controller controls the opening and closing of the first driving element according to the signal of the computer image processing software, thereby controlling the flipping position of the swing arm member.

3. The fastener gluing detection device according to claim 2, characterized in that: The outline of the swing arm is a parallelogram, including a hinged end and a swinging end. The rotating shaft is arranged on a side close to the hinged end. The swinging end faces the moving direction of the fastener, and the angle of the side of the swinging end close to the ramp section is an acute angle.

4. The fastener gluing detection device according to any one of claims 1 to 3, characterized in that: The device also includes an air blowing pipe, which is arranged at the junction of the horizontal section and the ramp section and blows out air to push the fastener into the ramp section and slide down.

5. The fastener gluing detection device according to claim 4, characterized in that: The device also includes an adjustment mechanism arranged between the two groups of CCD camera assemblies, the adjustment mechanism includes a turntable and a second driving element. The outer peripheral surface of the turntable is in rolling friction engagement with the outer peripheral surface of the threaded shaft portion extending from the fastener on the horizontal section. The driving element is in linkage engagement with the turntable to drive the turntable to rotate a certain angle, thereby driving the fastener to rotate a certain angle.

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