Permanent magnet appearance defect detection system

Abstract

The utility model discloses a permanent magnet appearance defect detection system which comprises a feeding assembly, a first scanning conveying assembly, a scanning moving support, a plurality of scanning assemblies, a turnover assembly and a second scanning conveying assembly. The feeding assembly is used for feeding a to-be-detected permanent magnet into the first scanning conveying assembly; the overturning assembly is used for overturning the to-be-detected permanent magnet output by the first scanning and conveying assembly; the scanning assembly is used for cooperating with the first scanning conveying assembly and the second scanning conveying assembly to carry out front and back appearance scanning on the to-be-detected permanent magnet. According to the utility model, the permanent magnet is overturned through the overturning assembly, and the movable scanning assembly is matched, so that all-directional appearance scanning of the permanent magnet can be realized, the acquisition efficiency of the structured light point cloud data of the appearance of the permanent magnet is effectively improved, and a new way for representing the appearance information of the permanent magnet through the structured light point cloud data is provided for the appearance defect detection of the permanent magnet.

Description

TECHNICAL FIELD

[0001] The utility model relates to permanent magnet detection technical field, concretely relates to a permanent magnet appearance defect detection system. BACKGROUND

[0002] Permanent magnet is a kind of magnet product with tile, strip, ring appearance, usually by ferrite, aluminum-nickel-cobalt, neodymium-iron-boron etc. Magnetic material is prepared. However, in the complex manufacturing process of permanent magnet, appearance defect can not be avoided, and these defects, even if relatively small, also reduce the mechanical strength of permanent magnet, affect its magnetic performance. In the actual production process of permanent magnet, rely on human eye observation and visible light image recognition can only distinguish larger appearance defect (millimeter level above), and too small appearance defect (sub-millimeter level and below) almost cannot be found. Therefore, the point cloud data obtained by introducing structure light scanning appearance can obtain the depth information that visible light two-dimensional image does not have, plus the resolution of structure light micron level, so that it is possible to detect the small appearance defect of permanent magnet. In addition, since permanent magnet has six faces, to obtain the data of six faces, the common operation is to obtain data by face by face by using manual turnover magnet, and when it is applied to permanent magnet appearance structure light scanning, multiple faces cannot be scanned at one time, resulting in low point cloud data acquisition efficiency. Therefore, in view of the foregoing problems, it is necessary to propose a permanent magnet appearance defect detection system capable of realizing automatic turnover of permanent magnet and simultaneous scanning of multiple faces. UTILITY MODEL CONTENTS

[0003] In view of the above shortcomings of the prior art, the utility model provides a permanent magnet appearance defect detection system, solves the problems that permanent magnet cannot be automatically turned and scanned, and multiple faces cannot be scanned at the same time, so that the structure light point cloud data acquisition efficiency of permanent magnet appearance is further improved.

[0004] To achieve the above invention purpose, the technical scheme adopted by the utility model is: including feeding assembly, first scanning conveying assembly, rotatable scanning mobile support, a plurality of scanning assemblies arranged on scanning mobile support, turnover assembly and second scanning conveying assembly;The feeding assembly is used to feed the permanent magnet to be detected into the first scanning conveying assembly;The turnover assembly is used to turn over the permanent magnet to be detected output by the first scanning conveying assembly, and the turnover assembly is arranged between the output end of the first scanning conveying assembly and the input end of the second scanning conveying assembly;The scanning mobile support is arranged above the turnover assembly, and the scanning assembly is used to cooperate with the first scanning conveying assembly and the second scanning conveying assembly to scan the appearance of the permanent magnet to be detected from front and back.

[0005] Further, a plurality of photoelectric switches are arranged on the first scanning conveying assembly and the second scanning conveying assembly.

[0006] Further, the first scanning conveying assembly is provided with a first photoelectric switch and a second photoelectric switch, and the first photoelectric switch, the second photoelectric switch and the first scanning conveying assembly form a first scanning area.

[0007] Further, the scanning moving support comprises a portal frame, a horizontal swing motor and an arc-shaped limiting track, one end of the bottom of the portal frame is fixedly connected with the output end of the horizontal swing motor, the other end of the bottom of the portal frame is provided with a universal wheel matched with the limiting track, and a plurality of profile gauges are arranged on the portal frame.

[0008] Further, the turnover assembly comprises a turnover wheel and a turnover driving motor, the turnover wheel is fixedly connected with the output end of the turnover driving motor, and a plurality of trapezoidal accommodating cavities for accommodating the permanent magnets to be detected are arranged on the circumference of the turnover wheel.

[0009] Further, the first scanning conveying assembly, the second scanning conveying assembly and the feeding assembly are all conveying belts.

[0010] Further, the output end height of the first scanning conveying assembly is higher than the input end height of the second scanning conveying assembly.

[0011] Further, the scanning assembly comprises a profile gauge, a U-shaped fixing clamp, a connecting rod and a connecting sleeve, the U-shaped fixing clamp is fixed with the profile gauge through two screws, the rear side of the U-shaped fixing clamp is fixedly connected with the connecting sleeve through the connecting rod, and the connecting sleeve is provided with mounting holes matched with the portal frame.

[0012] Further, two scanning assemblies are symmetrically arranged on the scanning moving support.

[0013] Further, the conveying directions of the first scanning conveying assembly and the second scanning conveying assembly are perpendicular to each other.

[0014] The utility model discloses the beneficial effects are:

[0015] The feeding assembly of the utility model sends the permanent magnet into the first scanning conveying assembly, and the first photoelectric switch and the second photoelectric switch are arranged on the first scanning conveying assembly to form the first scanning area, so that the front appearance defect scanning of the permanent magnet is realized in cooperation with the scanning moving support and the scanning assembly, the permanent magnet after scanning is conveyed to the second scanning conveying assembly through the turnover effect of the turnover assembly, the third photoelectric switch and the fourth photoelectric switch arranged on the second scanning conveying assembly form the fourth scanning area, so that the back appearance defect scanning of the permanent magnet is realized in cooperation with the scanning moving support and the scanning assembly, and the appearance defect scanning of the permanent magnet in the full range is realized.

[0016] The utility model discloses a turn over subassembly to permanent magnet overturn, cooperation can move scanning subassembly, can realize permanent magnet all -round appearance scanning, not only solve the problem that permanent magnet cannot automatic overturn scanning surface and difficult multiple face simultaneous scanning, effectively promote permanent magnet appearance's structured light point cloud data acquisition efficiency, still provide the new way of structured light point cloud data representation permanent magnet appearance information for permanent magnet appearance defect detection.

[0017] The utility model discloses need not manual turning over, and the structured light point cloud data of permanent magnet each structure surface is gathered automatically, and the detection efficiency and detection performance of permanent magnet appearance defect are promoted.

[0018] The utility model discloses two profile gauges adopt the way of symmetrical inward inclination and install, can better obtain permanent magnet multiple appearance scanning data. ACCURACY OF DRAWINGS

[0019] Figure 1 It is whole structure schematic drawing of the utility model;

[0020] Figure 2 It is structure schematic drawing of scanning mobile support;

[0021] Figure 3 It is first scanning conveying assembly and second scanning conveying assembly structure schematic drawing;

[0022] Figure 4 It is structure schematic drawing of overturning subassembly;

[0023] Figure 5 It is structure schematic drawing of profile gauge;

[0024] The symbol of each part is as follows:

[0025] 1, first scanning conveying assembly;11, photoelectric switch;12, L-shaped connecting piece;13, conveyer belt main body;14, conveyer belt drive motor;

[0026] 2, scanning mobile support;21, portal frame;22, horizontal swing motor;23, limit track;24, universal wheel;25, scanning subassembly;251, profile gauge;252, U-shaped fixed clamp;253, connecting rod;254, connecting sleeve;

[0027] 3, overturning subassembly;31, overturning wheel;32, drive motor;4, feeding assembly;5, second scanning conveying assembly;6, permanent magnet to be detected. DETAILED DESCRIPTION

[0028] The specific embodiments of the utility model are described below so as to make the technical personnel in the technical field understand the utility model, but it should be clear that the utility model is not limited to the scope of the specific embodiments, for the ordinary technical personnel in the technical field, as long as various changes are within the spirit and scope of the utility model defined and determined by the attached claims, these changes are obvious, all the utility model creations using the utility model concept are within the scope of protection.

[0029] As Figure 1 shown, the permanent magnet appearance defect detection system includes a feeding assembly 4, a first scanning conveying assembly 1, a rotatable scanning moving support 2, two scanning assemblies 25 arranged on the scanning moving support 2, a turnover assembly 3 and a second scanning conveying assembly 5. The conveying directions of the first scanning conveying assembly 1 and the second scanning conveying assembly 5 are perpendicular to each other, and the output end height of the first scanning conveying assembly 1 is higher than the input end height of the second scanning conveying assembly 5, so as to realize the turnover of the permanent magnet 6 to be detected in cooperation with the turnover assembly 3. The two scanning assemblies 25 are symmetrically arranged on the scanning moving support 2, and the two scanning assemblies 25 are both inwardly inclined, and the two scanning assemblies 25 cooperate with each other, so as to better scan the appearance of the permanent magnet 6 to be detected in all directions. The feeding assembly 4 is used for feeding the permanent magnet 6 to be detected into the first scanning conveying assembly 1. The turnover assembly 3 is used for turning over the permanent magnet 6 to be detected output by the first scanning conveying assembly 1, and the turnover assembly 3 is arranged between the output end of the first scanning conveying assembly 1 and the input end of the second scanning conveying assembly 5. The scanning moving support 2 is arranged above the turnover assembly 3, and the scanning assembly 25 is used for cooperating with the first scanning conveying assembly 1 and the second scanning conveying assembly 5 to scan the appearance of the permanent magnet 6 to be detected on the front and back sides. The first scanning conveying assembly 1, the second scanning conveying assembly 5 and the feeding assembly 4 are all conveying belts, the first scanning conveying assembly 1 and the second scanning conveying assembly 5 have the same structure, and the first scanning conveying assembly 1 and the second scanning conveying assembly 5 both include a conveying belt body 13 and a conveying belt driving motor 14 driving the conveying belt body 13. The photoelectric switch 11 is fixed on the side of the conveying belt body 13 through an L-shaped connecting piece 12, and the photoelectric switch 11 is used for detecting whether the permanent magnet 6 to be detected passes through.

[0030] As Figure 2As shown, the scanning moving bracket 2 comprises a U-shaped gantry 21, a horizontal swing motor 22 and an arc-shaped limiting track 23. The horizontal swing motor 22 is arranged at the inner side of the first scanning conveying assembly 1 and the second scanning conveying assembly 5. The rotation angle of the horizontal swing motor 22 is 90 degrees, and the rotation range is from perpendicular to the first scanning conveying assembly 1 to perpendicular to the second scanning conveying assembly 5. One end of the bottom of the gantry 21 is fixedly connected with the output end of the horizontal swing motor 22, and the other end of the bottom of the gantry 21 is provided with a universal wheel 24 matched with the limiting track 23. A plurality of profile gauges 251 are arranged on the gantry 21. The point cloud data scanned by the profile gauges 251 can detect the permanent magnet micro appearance defects that cannot be recognized by the human eye and the visible light two-dimensional image recognition.

[0031] As shown in Figure 3 The first scanning conveying assembly 1 and the second scanning conveying assembly 5 are both provided with two groups of photoelectric switches 11. The first scanning conveying assembly 1 is provided with a first photoelectric switch and a second photoelectric switch, and the first photoelectric switch, the second photoelectric switch and the first scanning conveying assembly 1 form a first scanning area. The second scanning conveying assembly 5 is provided with a third photoelectric switch and a fourth photoelectric switch, and the third photoelectric switch, the fourth photoelectric switch and the second scanning conveying assembly 5 form a second scanning area. The first photoelectric switch, the second photoelectric switch, the third photoelectric switch and the fourth photoelectric switch are in a movement position relationship with the scanning moving bracket 2 and the scanning assembly 25. Specifically, the feeding assembly 4 places the permanent magnet 6 to be detected on the first scanning conveying assembly 1, and the permanent magnet 6 to be detected travels on the first scanning conveying assembly 1. The first photoelectric switch controls the scanning assembly 25 on the scanning moving bracket 2 to prepare to scan the permanent magnet 6 to be detected, that is, to enter the first scanning area. When the permanent magnet 6 to be detected enters the second photoelectric switch, the second photoelectric switch receives a signal, drives the horizontal swing motor 22 of the scanning moving bracket 2 to rotate the gantry 21 to a specified position at a speed greater than that of the first scanning conveying assembly 1, so as to ensure that the gantry 21 and the scanning assembly 25 can be arranged in the second scanning area in advance, and at the same time, the permanent magnet 6 to be detected falls into the turnover assembly 3 and finally falls onto the second scanning conveying assembly 5 below. When the permanent magnet 6 to be detected below travels to the third photoelectric switch, the third photoelectric switch controls the scanning assembly 25 to prepare to scan the permanent magnet 6 to be detected. When the permanent magnet 6 to be detected travels to the fourth photoelectric switch, the fourth photoelectric switch controls the horizontal swing motor 22 to rotate the gantry 21 to the home position, and at the same time, the feeding assembly 4 feeds the next permanent magnet 6 to be detected.

[0032] As shown in Figure 4As shown, the turnover assembly 3 includes a turnover wheel 31 and a turnover drive motor 32, the turnover wheel 31 is fixedly connected with the output end of the turnover drive motor 32, and a plurality of trapezoidal accommodating cavities for accommodating the to-be-detected permanent magnet 6 are arranged on the circumference of the turnover wheel 31. The trapezoidal accommodating cavities are used to accommodate the to-be-detected permanent magnet 6 falling from the first scanning conveying assembly 1. The conveyor belt drive motor 14, the turnover drive motor 32 and the photoelectric switch 11 are all connected with the PLC controller, so as to control the permanent magnet appearance scanning operation of the whole permanent magnet appearance defect detection system.

[0033] As shown in Figure 5 As shown, the scanning assembly 25 includes a profilometer 251, a U-shaped fixing clamp 252, a connecting rod 253 and a connecting sleeve 254. The profilometer 251 is fixed by two screws through the U-shaped fixing clamp 252. The rear side of the U-shaped fixing clamp 252 is fixedly connected with the connecting sleeve 254 through the connecting rod 253. The connecting sleeve 254 is provided with a mounting hole matched with the gantry 21. The cross section of the beam of the gantry 21 is circular.

[0034] Working principle and process of the permanent magnet appearance defect detection system:

[0035] S1, the to-be-detected permanent magnet 6 is placed on the first scanning conveying assembly 1 by the feeding assembly 4 and advances to the first scanning area composed of the first photoelectric switch and the second photoelectric switch for scanning;

[0036] S2, the second photoelectric switch is triggered after scanning, and the horizontal swing motor 22 of the scanning moving bracket 2 receives the second photoelectric switch signal to drive the gantry 21 to rotate 90° to reach the second scanning area;

[0037] S3, the to-be-detected permanent magnet 6 falls into the turnover assembly 3, and the turnover assembly 3 rotates at a certain angular velocity to drive the to-be-detected permanent magnet 6 to rotate until the to-be-detected permanent magnet 6 falls into the next second scanning conveying assembly 5;

[0038] S4, the to-be-detected permanent magnet 6 advances with the second scanning conveying assembly 5 to enter the second scanning area composed of the third photoelectric switch and the fourth photoelectric switch for scanning. After scanning, a signal is sent through the fourth photoelectric switch, and the horizontal swing motor 22 of the scanning moving bracket 2 rotates 90° to return to the home position, and at the same time, the feeding assembly 4 feeds the next to-be-detected permanent magnet 6.

Claims

1. A permanent magnet appearance defect detection system, characterized by, It comprises a feeding assembly (4), a first scanning conveying assembly (1), a rotatable scanning moving support (2), a plurality of scanning assemblies (25) arranged on the scanning moving support (2), a turnover assembly (3) and a second scanning conveying assembly (5), and a plurality of photoelectric switches (11) are arranged on the first scanning conveying assembly (1) and the second scanning conveying assembly (5). The feeding assembly (4) is used for feeding the permanent magnet (6) to be detected into the first scanning conveying assembly (1). The turnover assembly (3) is used for turning over the permanent magnet (6) to be detected output by the first scanning conveying assembly (1), and is arranged between the output end of the first scanning conveying assembly (1) and the input end of the second scanning conveying assembly (5). The scanning moving support (2) is arranged above the turnover assembly (3), and the scanning assembly (25) is used for cooperating with the first scanning conveying assembly (1) and the second scanning conveying assembly (5) to scan the appearance of the front and back surfaces of the permanent magnet (6) to be detected.

2. The permanent magnet appearance defect detection system of claim 1, wherein, The first scanning conveying assembly (1) is provided with a first photoelectric switch and a second photoelectric switch, and a first scanning area is formed between the first photoelectric switch, the second photoelectric switch and the first scanning conveying assembly (1); the second scanning conveying assembly (5) is provided with a third photoelectric switch and a fourth photoelectric switch, and a second scanning area is formed between the third photoelectric switch, the fourth photoelectric switch and the second scanning conveying assembly (5).

3. The permanent magnet appearance defect detection system of claim 1, wherein, The scanning moving support (2) comprises a portal frame (21), a horizontal swing motor (22) and an arc-shaped limiting track (23), one end of the bottom of the portal frame (21) is fixedly connected with the output end of the horizontal swing motor (22), the other end of the bottom of the portal frame (21) is provided with a universal wheel (24) matched with the limiting track (23), and a plurality of profile gauges (251) are arranged on the portal frame (21).

4. The permanent magnet cosmetic defect detection system of claim 1, wherein, The turnover assembly (3) comprises a turnover wheel (31) and a turnover driving motor (32), the turnover wheel (31) is fixedly connected with the output end of the turnover driving motor (32), and a plurality of trapezoidal accommodating cavities for accommodating the permanent magnet (6) to be detected are arranged on the circumference of the turnover wheel (31).

5. The permanent magnet cosmetic defect detection system of claim 1, wherein, The first scanning conveying assembly (1), the second scanning conveying assembly (5) and the feeding assembly (4) are all conveying belts.

6. The permanent magnet appearance defect detection system of claim 5, wherein, The output end of the first scanning conveying assembly (1) is higher than the input end of the second scanning conveying assembly (5).

7. The permanent magnet cosmetic defect detection system of claim 1, wherein, The scanning assembly (25) comprises a profile gauge (251), a U-shaped fixed clamp (252), a connecting rod (253) and a connecting sleeve (254), the U-shaped fixed clamp (252) is fixed with the profile gauge (251) through two screws, the rear side of the U-shaped fixed clamp (252) is fixedly connected with the connecting sleeve (254) through the connecting rod (253), and the connecting sleeve (254) is provided with a mounting hole matched with the portal frame (21).

8. The permanent magnet cosmetic defect detection system of claim 1, wherein, Two scanning assemblies (25) are symmetrically arranged on the scanning moving support (2).

9. The permanent magnet cosmetic defect detection system of claim 1, wherein, The conveying directions of the first scanning conveying assembly (1) and the second scanning conveying assembly (5) are perpendicular to each other.

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