Sorting and conveying structure for bolt fluorescent magnetic powder inspection

Abstract

The utility model relates to a sorting and conveying structure for bolt fluorescent magnetic powder flaw detection. The sorting and conveying structure is arranged at the output end of a visual flaw detection box; the bolt sorting device is characterized by comprising a first conveying frame, a second conveying frame and a bolt sorting module; the bolt sorting module stretches across the position between the two conveying frames, qualified bolts subjected to fluorescent magnetic powder inspection are conveyed to the second conveying frame from the first conveying frame through the bolt sorting module, and unqualified products are discharged from the defective bolt discharging station on the first conveying frame. Qualified bolts pass through the bolt demagnetizing station from the second conveying frame and then are conveyed to the qualified bolt discharging station; a mode of selecting qualified bolts instead of a mode of selecting defective bolts is adopted, so that the problems of hysteresis quality, poor continuity and low efficiency of sorting after the bolts on a single conveying frame are detected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of bolt flaw detection, in particular to a sorting and conveying structure for bolt fluorescent magnetic powder 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] Common bolt flaw detection methods include eddy current testing, magnetic testing, and ultrasonic testing. In the magnetic testing of bolts, the screws need to be sorted after the flaw detection to select qualified bolts without defects, and unqualified bolts with defects need to be discarded. The common sorting method is to detect unqualified bolts and then send a warning when they are transported to the screening station on the original conveying path. Then, the unqualified bolts at the station are removed by manual or robotic arms before the original conveyor chain can continue to work. This processing method makes the bolt flaw detection work have a strong hysteresis and poor continuity. Therefore, a new bolt fluorescent magnetic particle flaw detection sorting and conveying structure is needed to increase the timeliness and continuity of bolt screening after defect detection. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a sorting and conveying structure for bolt fluorescent magnetic particle flaw detection, which can solve the problems of hysteresis, poor continuity and low efficiency when screening defective bolts and qualified bolts after general bolt magnetic particle flaw detection.

[0005] To solve the above technical problems, the technical solution of the utility model is: a bolt fluorescent magnetic particle inspection sorting and conveying structure, which is arranged at the output end of the visual flaw detection box; its innovation lies in: comprising a first conveying frame, a second conveying frame and a bolt sorting module;

[0006] The first conveyor is arranged at the output end of the visual flaw detection box, and the second conveyor is parallel to the first conveyor and closely attached to the side of one end of the first conveyor. The area where the second conveyor is closely attached to the first conveyor in the width direction serves as a sorting and transfer station. The end of the first conveyor is a defective bolt unloading station; the end of the second conveyor is a qualified bolt unloading station. A bolt demagnetization station is also provided on the second conveyor between the sorting and transfer station and the qualified bolt unloading station for demagnetizing magnetized bolts.

[0007] The first conveying frame and the second conveying frame are both rectangular parallelepiped frame structures, and conveying chains are provided on the first conveying frame and the second conveying frame along the extension direction, and a plurality of bolt placement racks are provided on the conveying chains at equal intervals;

[0008] The bolt sorting module includes an inverted U-shaped frame, a guide rail, a magnetic rodless cylinder, a lifting cylinder module and a clamping cylinder group; the inverted U-shaped frame is connected to the sorting and transfer station in the area where the first conveyor frame and the second conveyor frame are in close contact in the width direction; the two bottom ends of the inverted U-shaped frame are respectively connected to the outer edges of the first conveyor frame and the outer edges of the second conveyor frame; the guide rail is horizontally arranged on the inner wall of the top end of the inverted U-shaped frame, and the guide rail is arranged across the first conveyor frame and the second conveyor frame; the magnetic rodless cylinder is arranged on the guide rail and reciprocates along the extension direction of the guide rail; the lifting cylinder module is installed on the magnetic rodless cylinder and moves with the magnetic rodless cylinder; the clamping cylinder group is arranged on the output end of the lifting cylinder module, and the qualified bolts on the bolt placement rack on the first conveyor frame are grabbed and transferred to the bolt placement rack on the second conveyor frame through the clamping cylinder group.

[0009] Furthermore, the lifting cylinder module includes a mounting frame and a lifting cylinder unit; the mounting frame is U-shaped and the top end is connected to the magnetic rodless cylinder; a pair of guide holes are provided on the mounting frame along the vertical direction; the lifting cylinder unit has at least two and is installed on the mounting frame along the vertical direction, the output end of the lifting cylinder unit is horizontally connected to a clamping cylinder group mounting plate, and the top end of the clamping cylinder group mounting plate is provided with a guide rod to cooperate with the guide hole on the mounting frame; the clamping cylinder group includes at least two clamping cylinder units, and the output end of the clamping cylinder unit is provided with a clamping claw of the clamping bolt.

[0010] Furthermore, the bolt placement rack includes a base plate and an L-shaped support plate; the base plate is a rectangular plate structure and is installed on the conveyor chain of the first conveyor rack and the conveyor chain of the second conveyor rack; and each base plate is provided with a pair of L-shaped support plates, and the L-shaped support plates are provided with V-shaped support grooves for supporting bolts.

[0011] The advantages of the present invention are:

[0012] 1) In the present invention, a bolt sorting module spans between two conveyor racks. Bolts that have passed the fluorescent magnetic particle inspection are transported from the first conveyor rack to the second conveyor rack through the bolt sorting module. Unqualified products are unloaded from the defective bolt unloading station on the first conveyor rack. Qualified bolts are transported from the second conveyor rack to the qualified bolt unloading station after passing through the bolt demagnetization station. The method of selecting qualified bolts instead of defective bolts is adopted to solve the problems of hysteresis, poor continuity and low efficiency in the sorting of bolts after inspection on a single conveyor rack. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0014] Figure 1 This is a schematic diagram of a sorting and conveying structure for fluorescent magnetic particle flaw detection of bolts according to the present utility model.

[0015] Figure 2 This is a partial schematic diagram of a sorting and conveying structure for fluorescent magnetic particle flaw detection of bolts according to the present invention.

[0016] Figure 3 This is a structural diagram of a bolt placement rack of a sorting and conveying structure for bolt fluorescent magnetic particle flaw detection according to the utility model. DETAILED DESCRIPTION

[0017] 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.

[0018] 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.

[0019] like Figures 1 to 3 The structure shown is a bolt sorting and conveying structure for fluorescent magnetic particle flaw detection. The sorting and conveying structure is arranged at the output end of a visual flaw detection box 4 ; it includes a first conveying frame 1 , a second conveying frame 2 and a bolt sorting module 3 .

[0020] The first conveyor rack 1 is arranged at the output end of the visual flaw detection box 4, and the second conveyor rack 2 is parallel to the first conveyor rack 1 and closely attached to the side position of one end of the first conveyor rack 1, and the position area where the second conveyor rack 2 and the first conveyor rack 1 are closely attached in the width direction is the sorting and transfer station 11; the end of the first conveyor rack 1 is the defective bolt unloading station 12; the end of the second conveyor rack 2 is the qualified bolt unloading station 21; a bolt demagnetization station 22 is also provided on the second conveyor rack 2 between the sorting and transfer station 11 and the qualified bolt unloading station 21, for demagnetizing the magnetized bolts.

[0021] The first conveying frame 1 and the second conveying frame 2 are both rectangular parallelepiped frame structures, and conveying chains are provided on the first conveying frame 1 and the second conveying frame 2 along the extension direction, and a plurality of bolt placement racks 5 are provided on the conveying chains at equal intervals.

[0022] The bolt sorting module 3 includes an inverted U-shaped frame 31, a guide rail 32, a magnetic rodless cylinder 33, a lifting cylinder module 34 and a clamping cylinder group 35; the inverted U-shaped frame 31 is connected to the sorting transfer station 11 in the area where the first conveyor frame 1 and the second conveyor frame 2 are in close contact in the width direction; the two bottom ends of the inverted U-shaped frame 31 are respectively connected to the outer edge of the first conveyor frame 1 and the outer edge of the second conveyor frame 2; the guide rail 32 is horizontally arranged on the inner wall of the top of the inverted U-shaped frame 31, and the guide rail 32 crosses The first conveyor frame 1 and the second conveyor frame 2 are set; the magnetic rodless cylinder 33 is set on the guide rail 32 and reciprocates along the extension direction of the guide rail 32; the lifting cylinder module 34 is installed on the magnetic rodless cylinder 33 and moves with the magnetic rodless cylinder 33; the clamping cylinder group 35 is set on the output end of the lifting cylinder module 34, and the qualified bolts on the bolt placement rack 5 on the first conveyor frame 1 are grabbed and transferred to the bolt placement rack 5 of the second conveyor frame 2 through the clamping cylinder group 35.

[0023] The lifting cylinder module 34 includes a mounting frame 341 and a lifting cylinder unit 342; the mounting frame 341 has a U-shaped structure and the top end is connected to the magnetic rodless cylinder 33; a pair of guide holes are provided on the mounting frame 341 along the vertical direction; the lifting cylinder unit 342 has at least two and is installed on the mounting frame 341 along the vertical direction, and the output end of the lifting cylinder unit 342 is horizontally connected to a clamping cylinder group mounting plate, and the top end of the clamping cylinder group mounting plate is provided with a guide rod that cooperates with the guide hole on the mounting frame 341; the clamping cylinder group 35 includes at least two clamping cylinder units, and the output end of the clamping cylinder unit is provided with a clamping claw of the clamping bolt.

[0024] The bolt placement rack 5 includes a base plate 51 and an L-shaped support plate 52; the base plate 51 is a rectangular plate structure and is installed on the conveyor chain of the first conveyor rack 1 and the conveyor chain of the second conveyor rack 2; and each base plate 51 is provided with a pair of L-shaped support plates 52, and the L-shaped support plates 52 are provided with V-shaped support grooves for supporting bolts.

[0025] The working principle of the utility model is as follows: a bolt sorting module is spanned between two conveyor racks, and bolts that have passed the fluorescent magnetic particle inspection are transported from the first conveyor rack to the second conveyor rack through the bolt sorting module, and unqualified products are unloaded from the defective bolt unloading station on the first conveyor rack, and qualified bolts are transported from the second conveyor rack to the qualified bolt unloading station after passing through the bolt demagnetization station; the method of selecting qualified bolts instead of selecting defective bolts is adopted to solve the problems of hysteresis, poor continuity and low efficiency in the sorting of bolts after inspection on a single conveyor rack.

[0026] 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 bolt fluorescent magnetic particle inspection sorting and conveying structure, which is arranged at the output end of a visual inspection box; characterized by: It includes a first conveying rack, a second conveying rack and a bolt sorting module; The first conveyor is arranged at the output end of the visual flaw detection box, and the second conveyor is parallel to the first conveyor and closely attached to the side of one end of the first conveyor. The area where the second conveyor is closely attached to the first conveyor in the width direction serves as a sorting and transfer station. The end of the first conveyor is a defective bolt unloading station; the end of the second conveyor is a qualified bolt unloading station. A bolt demagnetization station is also provided on the second conveyor between the sorting and transfer station and the qualified bolt unloading station for demagnetizing magnetized bolts. The first conveying frame and the second conveying frame are both rectangular parallelepiped frame structures, and conveying chains are provided on the first conveying frame and the second conveying frame along the extension direction, and a plurality of bolt placement racks are provided on the conveying chains at equal intervals; The bolt sorting module includes an inverted U-shaped frame, a guide rail, a magnetic rodless cylinder, a lifting cylinder module and a clamping cylinder group; the inverted U-shaped frame is connected to the sorting and transfer station in the area where the first conveyor frame and the second conveyor frame are in close contact in the width direction; the two bottom ends of the inverted U-shaped frame are respectively connected to the outer edges of the first conveyor frame and the outer edges of the second conveyor frame; the guide rail is horizontally arranged on the inner wall of the top end of the inverted U-shaped frame, and the guide rail is arranged across the first conveyor frame and the second conveyor frame; the magnetic rodless cylinder is arranged on the guide rail and reciprocates along the extension direction of the guide rail; the lifting cylinder module is installed on the magnetic rodless cylinder and moves with the magnetic rodless cylinder; the clamping cylinder group is arranged on the output end of the lifting cylinder module, and the qualified bolts on the bolt placement rack on the first conveyor frame are grabbed and transferred to the bolt placement rack on the second conveyor frame through the clamping cylinder group.

2. The bolt fluorescent magnetic particle inspection sorting and conveying structure according to claim 1, characterized in that: The lifting cylinder module includes a mounting frame and a lifting cylinder unit; the mounting frame is U-shaped and the top end is connected to the magnetic rodless cylinder; a pair of guide holes are provided on the mounting frame along the vertical direction; the lifting cylinder unit has at least two and is installed on the mounting frame along the vertical direction, the output end of the lifting cylinder unit is horizontally connected to a clamping cylinder group mounting plate, and the top end of the clamping cylinder group mounting plate is provided with a guide rod that cooperates with the guide hole on the mounting frame; the clamping cylinder group includes at least two clamping cylinder units, and the output end of the clamping cylinder unit is provided with a clamping claw of the clamping bolt.

3. The bolt fluorescent magnetic particle inspection sorting and conveying structure 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 and is installed on the conveying chain of the first conveyor rack and the conveying chain of the second conveyor rack; and each base plate is provided with a pair of L-shaped support plates, and the L-shaped support plates are provided with V-shaped support grooves for supporting bolts.

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