Visual inspection structure for bolt fluorescent magnetic powder inspection

Abstract

The utility model relates to a visual detection structure for bolt fluorescent magnetic powder inspection. The visual detection structure is characterized by comprising a visual detection box body, a conveying frame, a detection support frame, a CCD (Charge Coupled Device) visual identification module and a bolt clamping and transferring module, a sectional bolt conveying mode is adopted, the bolt clamping and transferring module is used for connection on a conveying path, the continuity of bolt detection can be effectively guaranteed, in addition, a camera structure of the neck of the bolt is additionally arranged, and it is guaranteed that the condition of the neck of the bolt is effectively detected; by adopting the light source with the filter lens and matching with the polarizer and the UV filter on the camera, the clearness during bolt detection can be ensured, and the defect part can be identified more easily.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt flaw detection, in particular to a visual detection structure for bolt fluorescent magnetic particle flaw detection. Background Art

[0002] Bolts are mechanical parts, cylindrical threaded fasteners equipped with nuts. They are divided into standard parts and non-standard parts. Non-standard parts include customized, special parts and parts required for special equipment. During the production process, the quality of bolts needs to be tested by flaw detection.

[0003] When using a camera group for fluorescent magnetic particle inspection of bolts, the camera is generally used to identify the circumference and ends of the bolt. No identification camera is set at the neck of the bolt, resulting in missed neck inspections. In addition, the bolts have a smooth surface and are prone to reflection problems during inspection, making the inspection unclear. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a visual inspection structure for bolt fluorescent magnetic particle inspection, which can solve the problems that the general bolt fluorescent magnetic particle inspection does not have a special camera for bolt neck inspection, resulting in poor inspection effect, and the bolt reflection leads to unclear product inspection.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a visual inspection structure for fluorescent magnetic particle inspection of bolts, the innovation of which is that it includes a visual inspection box, a conveyor frame, a detection support frame, a CCD visual recognition module and a bolt clamping and transfer module;

[0006] The visual inspection box is a rectangular sealed box, and each side of the visual inspection box is provided with a connection port for accommodating the insertion of the conveyor rack; the visual inspection box is provided with an inspection table;

[0007] The conveyor frame includes a feeding conveyor frame and a discharging conveyor frame, and one end of the feeding conveyor frame and one end of the discharging conveyor frame are respectively embedded in the two connecting ports of the visual inspection box to the top of the inspection table; the feeding conveyor frame and the discharging conveyor frame are both provided with a conveyor chain, and a plurality of bolt placement racks are provided on the conveyor chain at equal intervals along the extension direction;

[0008] The detection support frame is arranged on the detection platform, and the detection support frame is located between the feeding conveyor frame and the discharging conveyor frame; the detection support frame is provided with a plurality of sets of rotary support rollers, and a bolt is placed on each set of rotary support rollers, and the bolt is driven to rotate by the rotary support roller;

[0009] The CCD visual recognition module is installed on the top inner wall of the visual inspection box and is located above the detection support frame. The magnetized bolts are identified and detected by the CCD visual recognition module. The CCD visual recognition module includes a camera group and a black light. The camera group includes a top recognition camera, an end recognition camera, and a bolt neck recognition camera, which respectively identify the circumference, end, and neck of the bolt. The black light is set on the inner walls of both sides of the visual inspection box near the top to illuminate the bolts in the visual inspection box.

[0010] The bolt clamping and transferring module is arranged on the top inner wall of the visual inspection box. The bolts on the feeding conveyor rack are grabbed and placed on the rotary support roller through the bolt clamping and transferring module. After the inspection is completed, the bolts on the rotary support roller are grabbed and placed on the discharging conveyor rack to be sent out of the visual inspection box.

[0011] Furthermore, the bolt placement rack includes a base plate and an L-shaped support plate; the base plate is a rectangular plate structure, the base plate is horizontally installed on the conveyor chain, each base plate has a pair of L-shaped supports, and the L-shaped support plate is provided with a V-shaped support groove for supporting bolts.

[0012] Furthermore, the bolt clamping and transfer module includes a guide rail, a magnetic rodless cylinder, a lifting cylinder and a bolt clamping cylinder; the guide rail is installed on the inner wall of the top end of the visual inspection box, and the magnetic rodless cylinder cooperates with the guide rail to move back and forth along the extension direction of the guide rail; the lifting cylinder is connected to the magnetic rodless cylinder along the vertical direction; the bolt clamping cylinder is arranged at the output end of the lifting cylinder, and a bolt clamping claw is provided on the bolt clamping cylinder, which is driven by the bolt clamping cylinder to grab or loosen the bolt.

[0013] Furthermore, the top recognition camera, the end recognition camera and the bolt neck recognition camera are all equipped with polarizing box UV filters; the black light is processed with a filter to ensure that the black light emits only ultraviolet light of a specific wavelength, and the light entering the camera lens is only green fluorescence.

[0014] The advantages of the present invention are:

[0015] 1) The present invention adopts a segmented bolt conveying method, which is connected by a bolt gripping and transferring module on the conveying path, which can effectively ensure the continuity of bolt detection. In addition, the addition of a camera structure at the bolt neck ensures that the condition of the bolt neck is effectively detected. The light source with a filter and the polarizing filter and UV filter on the camera can ensure the clarity of bolt detection and make it easier to identify defective parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 The utility model is a schematic diagram of a visual inspection structure for fluorescent magnetic particle flaw detection of bolts.

[0018] Figure 2 The utility model is a schematic diagram of the partial structure of a visual inspection structure for fluorescent magnetic particle flaw detection of bolts.

[0019] Figure 3 This is a structural diagram of a bolt placement rack with a visual inspection structure for fluorescent magnetic particle flaw detection of bolts according to the utility model.

[0020] Figure 4 This is a camera distribution state diagram of a visual inspection structure for fluorescent magnetic particle flaw detection of bolts in the utility model. DETAILED DESCRIPTION

[0021] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0023] like Figures 1 to 4 The visual inspection structure for fluorescent magnetic particle flaw detection of bolts shown includes a visual inspection box 1, a conveying frame 2, a detection support frame 3, a CCD visual recognition module 4 and a bolt clamping and transferring module 5.

[0024] The visual inspection box 1 is a sealed rectangular box, and each side surface of the visual inspection box 1 is provided with a connection port for accommodating the insertion of the conveying rack; an inspection platform 11 is provided in the visual inspection box 1.

[0025] The conveying rack 2 includes a feeding conveying rack 21 and a discharging conveying rack 22, and one end of the feeding conveying rack 21 and one end of the discharging conveying rack 22 are respectively embedded in the two connecting ports of the visual inspection box 1 to the top of the inspection table 11; the feeding conveying rack 21 and the discharging conveying rack 22 are both provided with conveying chains, and a number of bolt placement racks 6 are provided on the conveying chains at equal intervals along the extension direction.

[0026] The detection support frame 3 is set on the detection platform 11, and the detection support frame 3 is located between the feeding conveyor frame 21 and the discharging conveyor frame 22; a plurality of groups of rotary support rollers 31 are set on the detection support frame 3, and a bolt is placed on each group of rotary support rollers, and the bolts are driven to rotate by the rotary support rollers 31.

[0027] The CCD visual recognition module 4 is installed on the top inner wall of the visual inspection box 1 and is located above the detection support frame 3. The magnetized bolts are identified and detected through the CCD visual recognition module 4; the CCD visual recognition module 4 includes a camera group 41 and a black light lamp 42; the camera group 41 includes a top recognition camera, an end recognition camera and a bolt neck recognition camera, which respectively identify the circumference, end and neck of the bolt; the black light lamp 42 is set on the inner walls near the top on both sides of the visual inspection box to illuminate the bolts in the visual inspection box 1.

[0028] The bolt clamping and transferring module 5 is arranged on the top inner wall of the visual inspection box 1. The bolt clamping and transferring module 5 is used to grab the bolts on the feeding conveyor frame 21 and place them on the rotary support roller 31. After the inspection is completed, the bolts on the rotary support roller 31 are grabbed and placed on the discharging conveyor frame 22 to be sent out of the visual inspection box 1.

[0029] The bolt rack 6 includes a base plate 61 and an L-shaped support plate 62; the base plate 61 is a rectangular plate structure, and the base plate 61 is horizontally installed on the conveyor chain. Each base plate 61 has a pair of L-shaped supports, and the L-shaped support plate 62 is provided with a V-shaped support groove for supporting bolts.

[0030] The bolt clamping and transferring module 5 includes a guide rail 51, a magnetic rodless cylinder 52, a lifting cylinder 53 and a bolt clamping cylinder 54; the guide rail 51 is installed on the inner wall of the top end of the visual inspection box 1, and the magnetic rodless cylinder 52 cooperates with the guide rail 51 to move back and forth along the extension direction of the guide rail 51; the lifting cylinder 53 is connected to the magnetic rodless cylinder 52 along the vertical direction; the bolt clamping cylinder 54 is arranged at the output end of the lifting cylinder 53, and a bolt clamping claw is provided on the bolt clamping cylinder 54, which is driven by the bolt clamping cylinder 54 to grab or loosen the bolt.

[0031] The top recognition camera, the end recognition camera and the bolt neck recognition camera are all equipped with polarizing box UV filters; the black light lamp 42 is processed with a filter to ensure that the black light lamp 42 emits only ultraviolet light of a specific wavelength, and the light entering the camera lens is only green fluorescence.

[0032] The working principle of the present invention is as follows: the present invention adopts a segmented method of conveying bolts, and the bolt clamping and transferring modules are connected on the conveying path, which can effectively ensure the continuity of bolt detection. In addition, a camera structure is added to the bolt neck to ensure that the situation of the bolt neck is effectively detected; the light source with a filter and the polarizing filter and UV filter on the camera are used to ensure the clarity of the bolt during detection, making it easier to identify defective parts.

[0033] Those skilled in the art should understand that the present invention is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements shall fall within the scope of the present invention to be protected.

Claims

1. A visual inspection structure for fluorescent magnetic particle inspection of bolts, characterized by: It includes visual inspection box, conveyor frame, inspection support frame, CCD visual recognition module and bolt clamping and transfer module; The visual inspection box is a rectangular sealed box, and each side of the visual inspection box is provided with a connection port for accommodating the insertion of the conveyor rack; the visual inspection box is provided with an inspection table; The conveyor frame includes a feeding conveyor frame and a discharging conveyor frame, and one end of the feeding conveyor frame and one end of the discharging conveyor frame are respectively embedded in the two connecting ports of the visual inspection box to the top of the inspection table; the feeding conveyor frame and the discharging conveyor frame are both provided with a conveyor chain, and a plurality of bolt placement racks are provided on the conveyor chain at equal intervals along the extension direction; The detection support frame is arranged on the detection platform, and the detection support frame is located between the feeding conveyor frame and the discharging conveyor frame; the detection support frame is provided with a plurality of sets of rotary support rollers, and a bolt is placed on each set of rotary support rollers, and the bolt is driven to rotate by the rotary support roller; The CCD visual recognition module is installed on the top inner wall of the visual inspection box and is located above the detection support frame. The magnetized bolts are identified and detected by the CCD visual recognition module. The CCD visual recognition module includes a camera group and a black light. The camera group includes a top recognition camera, an end recognition camera, and a bolt neck recognition camera, which respectively identify the circumference, end, and neck of the bolt. The black light is set on the inner walls of both sides of the visual inspection box near the top to illuminate the bolts in the visual inspection box. The bolt clamping and transferring module is arranged on the top inner wall of the visual inspection box. The bolts on the feeding conveyor rack are grabbed and placed on the rotary support roller through the bolt clamping and transferring module. After the inspection is completed, the bolts on the rotary support roller are grabbed and placed on the discharging conveyor rack to be sent out of the visual inspection box.

2. A visual inspection structure for fluorescent magnetic particle inspection of bolts according to claim 1, characterized in that: The bolt placement rack includes a base plate and an L-shaped support plate; the base plate is a rectangular plate structure, the base plate is horizontally installed on the conveyor chain, each base plate has a pair of L-shaped supports, and the L-shaped support plate is provided with a V-shaped support groove for supporting bolts.

3. The visual inspection structure for fluorescent magnetic particle inspection of bolts according to claim 1, characterized in that: The bolt clamping and transfer module includes a guide rail, a magnetic rodless cylinder, a lifting cylinder and a bolt clamping cylinder; the guide rail is installed on the inner wall of the top end of the visual inspection box, and the magnetic rodless cylinder cooperates with the guide rail to move back and forth along the extension direction of the guide rail; the lifting cylinder is connected to the magnetic rodless cylinder along the vertical direction; the bolt clamping cylinder is arranged at the output end of the lifting cylinder, and a bolt clamping claw is provided on the bolt clamping cylinder, which is driven by the bolt clamping cylinder to grab or loosen the bolt.

4. The visual inspection structure for fluorescent magnetic particle inspection of bolts according to claim 1, characterized in that: The top recognition camera, end recognition camera and bolt neck recognition camera are all equipped with polarizing box UV filters; the black light is processed with a filter to ensure that the black light emits only ultraviolet light of a specific wavelength and the light entering the camera lens is only green fluorescence.

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