Magnet workpiece visual inspection device

Abstract

The utility model relates to magnet workpiece processing technical field, and disclose a kind of magnet workpiece visual inspection equipment, including the transmission belt of horizontal arrangement, the mounting bracket of symmetrical arrangement in the both sides of transmission belt, the connecting seat of fixed mounting in any side mounting bracket, industrial camera and the limiting plate located at the feed end of transmission belt of fixed setting in the connecting seat bottom, for the physical separation of magnet workpiece on transmission belt, prevent magnetic adhesion, the surface of transmission belt is equipped with the weak magnetic positioning area and non-magnetic conveying area of alternate distribution, the limiting plate is in the shape of windmill, and center pole is fixedly arranged in the center thereof, and the gap between the blades of windmill is constituted into workpiece separation channel, the utility model is separated by using windmill limiting plate, and it is convenient to separate workpiece, realize multi-angle detection, rubber buffer layer protects workpiece, intermittent positioning ensures that imaging is clear, especially suitable for high magnetic material, help to realize high-precision, low-damage detection.

Description

Technical Field

[0001] This utility model relates to the field of magnetic workpiece processing, and in particular to a visual inspection device for magnetic workpieces. Background Technology

[0002] In the field of magnetic material manufacturing, magnetic workpieces (such as neodymium iron boron and ferrite) need to undergo strict size, appearance and polarity inspection during the production process to ensure product quality. Traditional visual inspection equipment usually uses conveyor belts to transport workpieces and industrial cameras to collect and analyze images. However, because magnets are inherently strong magnets, they are prone to attracting, stacking or shifting during transport, making it difficult for industrial cameras to accurately capture a complete image of a single workpiece. This makes it inconvenient to perform multi-angle inspection, thus affecting the accuracy of defect identification and size measurement.

[0003] Therefore, a visual inspection device for magnetic workpieces was designed. Utility Model Content

[0004] This invention addresses the shortcomings of existing technologies by providing a visual inspection device for magnetic workpieces. It solves the problem that magnetic workpieces are prone to stacking misalignment due to magnetic adsorption in traditional visual inspection, which affects the imaging accuracy of industrial cameras, causes errors in dimensional measurement and defect identification, and reduces the accuracy of inspection.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A visual inspection device for magnetic workpieces includes a horizontally arranged conveyor belt, mounting frames symmetrically arranged on both sides of the conveyor belt, a connecting seat fixedly installed on the mounting frame on either side, an industrial camera fixedly installed at the bottom of the connecting seat, and a limiting plate located at the feed end of the conveyor belt, for physically separating the magnetic workpieces on the conveyor belt to prevent magnetic adhesion. The surface of the conveyor belt is provided with alternating weak magnetic positioning areas and non-magnetic conveying areas, and the magnetic field strength of the magnetic area surface is ≤50 Gauss.

[0006] Preferably, the limiting plate is windmill-shaped, with a central rod fixedly installed at its center, and the gap between the windmill-shaped blades forms a workpiece separation channel.

[0007] Preferably, an insertion groove is provided on the mounting bracket on the side opposite to the connecting seat, and the central rod of the limiting plate passes through the insertion groove and is rotatably connected to the mounting bracket; the outer edge of the blade of the limiting plate is covered with a rubber layer to buffer contact and protect the surface of the workpiece.

[0008] Preferably, the bottom of the mounting frame is fixedly provided with multiple support legs, and the drive end of the conveyor belt is connected to a control motor, which is fixed to the side wall of the mounting frame.

[0009] Preferably, the mounting bracket is used to place the workpiece to be inspected, and a support plate is fixedly provided at the bottom of the mounting bracket near the insertion slot.

[0010] Preferably, a feeding plate is fixedly provided on the side of the mounting frame near the limiting plate. The feeding plate is inclined and its lower end is in contact with the conveyor belt.

[0011] Preferably, a rotating disk is fixedly provided at the bottom of the central rod, and a driving disk for intermittently rotating the rotating disk is provided on one side of the rotating disk. The central shafts of the rotating disk and the driving disk both pass through the support plate and are rotatably connected to it.

[0012] Preferably, the sidewall of the rotating disk is provided with a plurality of arc-shaped grooves and slots arranged in a circumferential array, and the plurality of arc-shaped grooves and slots are spaced apart; the driving disk has a crescent-shaped profile, and its protrusion engages with the arc-shaped grooves; a vertical connecting plate is fixedly connected to the recess of the driving disk, and a driving rod that engages with the slots is provided on the top of the connecting plate; the rotating shaft of the driving disk is connected to an adjusting motor, and the adjusting motor is fixed on the support plate.

[0013] Preferably, the mounting frame has sorting openings on both sides away from the feeding plate, and a sorting plate for sorting materials is provided at one of the sorting openings. An electric push rod is fixedly provided on the surface of the sorting plate, and the electric push rod is fixedly connected to a connecting frame fixedly provided on the mounting frame. The sorting plate is made of non-magnetic metal.

[0014] Preferably, a visual inspection device for magnetic workpieces further includes a control terminal, which is connected to an industrial camera, a control motor, an adjustment motor, and an electric actuator for synchronously controlling the feed speed of the conveyor belt and the rotation frequency of the limiting plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: This invention effectively solves the problem of detecting magnetic workpieces adhering and sticking by using a windmill-shaped limiting plate, a rotating disk, and a driving disk in combination. The windmill-shaped limiting plate, together with a rubber buffer layer, achieves physical separation, ensuring that each workpiece is inspected individually. The arc-shaped grooves and slots of the driving disk and the rotating disk form an intermittent mechanism, enabling the workpiece to be accurately positioned within the camera's field of view, improving image clarity. The control terminal intelligently adjusts the conveyor belt speed and the rotation frequency of the limiting plate to adapt to the inspection needs of workpieces of different sizes, avoiding false detections and missed detections caused by workpiece stacking. It is particularly suitable for the inspection of highly magnetic materials, achieving high-precision, low-damage magnet inspection, and is especially suitable for the full inspection needs of small or irregularly shaped workpieces. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram showing the structural relationship between the limiting plate and the rotating disk of this utility model; Figure 3 This is a schematic diagram showing the structural cooperation between the rotating disk and the drive disk of this utility model; Figure 4 This is a schematic diagram of the feeding plate structure of this utility model.

[0018] Drawing number descriptions: 1. Conveyor belt; 11. Control motor; 2. Mounting frame; 21. Insertion slot; 22. Support leg; 23. Support plate; 24. Feeding plate; 3. Connecting seat; 4. Industrial camera; 5. Limiting plate; 51. Center rod; 52. Rubber layer; 6. Rotary disk; 61. Arc groove; 62. Slot; 7. Drive disk; 71. Connecting plate; 72. Drive rod; 73. Adjusting motor; 8. Control terminal; 9. Sorting plate; 91. Electric push rod; 92. Connecting frame. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings.

[0020] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the present invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0021] Those skilled in the art should understand that in the disclosure of this utility model, the terms "longitudinal", "lateral", "up", "down", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are only for the purpose of simplifying the description of this utility model and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0022] It is understood that the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0023] Please see Figure 1-4 A visual inspection device for magnetic workpieces includes a horizontally arranged conveyor belt 1, mounting frames 2 symmetrically arranged on both sides of the conveyor belt 1, a connecting seat 3 fixedly installed on the mounting frame 2 on either side, an industrial camera 4 fixedly installed at the bottom of the connecting seat 3, and a limiting plate 5 located at the feed end of the conveyor belt 1, which is used to physically separate the magnetic workpieces on the conveyor belt 1 to prevent magnetic adhesion. The surface of the conveyor belt 1 is provided with alternating weak magnetic positioning areas and non-magnetic conveying areas, and the magnetic field strength of the magnetic area surface is ≤50 Gauss. The limiting plate 5 is windmill-shaped, with a central rod 51 fixedly installed at its center. The gap between the windmill-shaped blades forms a workpiece separation channel. An insertion groove 21 is opened on the mounting frame 2 opposite to the connecting seat 3. The central rod 51 of the limiting plate 5 passes through the insertion groove 21 and is rotatably connected to the mounting frame 2. The outer edge of the blades of the limiting plate 5 is covered with a rubber layer 52 to buffer contact and protect the workpiece surface. Multiple support legs 22 are fixedly installed at the bottom of the mounting frame 2. The drive end of the conveyor belt 1 is connected to a control motor 11. The control motor 11 is fixed to the side wall of the mounting frame 2. The mounting frame 2 is used to place the workpiece to be inspected. A support plate 23 is fixedly installed at the bottom of the mounting frame 2 near the insertion groove 21. A feeding plate 24 is fixedly installed on the side of the mounting frame 2 near the limiting plate 5. The feeding plate 24 is inclined and its lower end contacts the conveyor belt 1. A rotating disk 6 is fixedly installed at the bottom of the central rod 51. A drive disk 7 for intermittently rotating the rotating disk 6 is installed on one side of the rotating disk 6. The central shafts of the rotating disk 6 and the drive disk 7 pass through the support plate 23 and are rotatably connected to it. Multiple arc-shaped grooves 61 and slots 62 arranged in a circular array are opened on the side wall of the rotating disk 6. The multiple arc-shaped grooves 61 and slots 62 are distributed at intervals. The drive disk 7 has a crescent-shaped profile. Its protrusion engages with the arc-shaped groove 61. A vertical connecting plate 71 is fixedly connected to the recess of the drive disk 7. A drive rod 72 that engages with the slot 62 is provided at the top of the connecting plate 71. An adjusting motor 73 is connected to the rotating shaft of the drive disk 7. The adjusting motor 73 is fixed on the support plate 23. This magnetic workpiece visual inspection equipment effectively solves the problem of magnetic workpieces being easily attracted and stuck in traditional conveyor belt inspection by using a windmill-shaped limiting plate 5 in conjunction with an intermittent drive rotating disk 6 and a drive disk 7. The working process is as follows: The magnetic workpiece to be inspected is conveyed to the feeding end by the conveyor belt 1. The windmill-shaped limiting plate 5 rotates intermittently under the drive of the regulating motor 73. When the workpiece contacts the blades of the limiting plate 5, the rubber layer 52 buffers the impact force and prevents scratches. At the same time, the gap between the blades forcibly separates adjacent workpieces to avoid magnetic attraction and sticking. With the help of the weakly magnetic conveyor belt 1, the separated workpieces can be stably placed on the conveyor belt 1. The spacing between the windmill-shaped blades of the limiting plate 5 (width of the separation channel) is designed to be 1.5-2 times the workpiece size to ensure that the workpiece spacing after separation is greater than the effective range of magnetic force. The drive disk 7 engages with the arc groove 61 of the rotating disk 6 through the crescent-shaped contour, driving the limit plate 5 to rotate in increments, ensuring that only one workpiece is allowed to pass through the detection area at a time. Multiple industrial cameras 4 take multi-angle pictures of the workpiece under the synchronous signal of the control terminal 8.

[0024] Sorting openings are provided on both sides of the mounting frame 2 away from the feeding plate 24. A sorting plate 9 for sorting materials is provided at one of the sorting openings. An electric push rod 91 is fixedly provided on the surface of the sorting plate 9. The electric push rod 91 is fixedly connected to the connecting frame 92 fixedly provided on the mounting frame 2. The sorting plate 9 is made of non-magnetic metal. A visual inspection device for magnetic workpieces also includes a control terminal 8, which is connected to an industrial camera 4, a control motor 11, an adjustment motor 73 and an electric push rod 91 for synchronously controlling the feeding speed of the conveyor belt 1 and the rotation frequency of the limit plate 5. After the inspection is completed, the industrial camera 4 transmits the inspection results to the control terminal 8. If the inspection is qualified, the workpiece is successfully transferred to the next process through the conveyor belt 1. If the inspection is unqualified, the control terminal 8 controls the electric push rod 91 to drive the sorting plate 9 to push and sort the workpieces that have passed through the sorting port. Industrial camera 4 transmits images to control terminal 8, which analyzes dimensions, surface defects, or polarity marks using a preset algorithm. Qualified products continue to be transported to the next process, while unqualified products are rejected by the subsequent sorting mechanism.

[0025] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may have any variations or modifications.

Claims

1. A visual inspection device for magnetic workpieces, characterized in that, The system includes a horizontally arranged conveyor belt (1), mounting brackets (2) symmetrically arranged on both sides of the conveyor belt (1), a connecting seat (3) fixedly installed on the mounting bracket (2) on either side, an industrial camera (4) fixedly installed at the bottom of the connecting seat (3), and a limiting plate (5) located at the feed end of the conveyor belt (1) for physically separating the magnetic workpieces on the conveyor belt (1) to prevent magnetic adhesion. The surface of the conveyor belt (1) is provided with alternating weak magnetic positioning areas and non-magnetic conveying areas, and the magnetic field strength of the magnetic area surface is ≤50 Gauss.

2. The visual inspection equipment for magnetic workpieces according to claim 1, characterized in that: The limiting plate (5) is in the shape of a windmill, and a central rod (51) is fixedly installed at its center. The gap between the windmill-shaped blades forms a workpiece separation channel.

3. The visual inspection equipment for magnetic workpieces according to claim 2, characterized in that: An insertion groove (21) is provided on the mounting bracket (2) opposite to the connecting seat (3), and the center rod (51) of the limiting plate (5) passes through the insertion groove (21) and is rotatably connected to the mounting bracket (2); The outer edge of the blade of the limiting plate (5) is covered with a rubber layer (52) to buffer contact and protect the surface of the workpiece.

4. The visual inspection equipment for magnetic workpieces according to claim 3, characterized in that: The bottom of the mounting frame (2) is fixedly provided with multiple support legs (22), and the drive end of the conveyor belt (1) is connected to a control motor (11), which is fixed to the side wall of the mounting frame (2).

5. The visual inspection device for magnetic workpieces according to claim 4, characterized in that: The mounting bracket (2) is used to place the workpiece to be inspected, and a support plate (23) is fixedly provided at the bottom of the mounting bracket (2) near the insertion groove (21).

6. The visual inspection equipment for magnetic workpieces according to claim 5, characterized in that: The mounting bracket (2) has a feeding plate (24) fixedly installed on the side near the limiting plate (5). The feeding plate (24) is inclined and its lower end is in contact with the conveyor belt (1).

7. The visual inspection equipment for magnetic workpieces according to claim 2, characterized in that: A rotating disk (6) is fixedly installed at the bottom of the central rod (51). A drive disk (7) for intermittently rotating the rotating disk (6) is provided on one side of the rotating disk (6). The central axes of the rotating disk (6) and the drive disk (7) both pass through the support plate (23) and are rotatably connected to it.

8. The visual inspection equipment for magnetic workpieces according to claim 7, characterized in that: The rotating disk (6) has multiple arc-shaped grooves (61) and slots (62) arranged in a circular array on its side wall, and the multiple arc-shaped grooves (61) and slots (62) are distributed at intervals. The drive disk (7) has a crescent-shaped profile, and its protrusion engages with the arc-shaped groove (61); The recessed part of the drive disk (7) is fixedly connected to a vertical connecting plate (71), and the top of the connecting plate (71) is provided with a drive rod (72) that engages with the slot (62). The drive disc (7) has a rotating shaft connected to an adjustment motor (73), which is fixed on a support plate (23).

9. A visual inspection device for magnetic workpieces according to claim 1, characterized in that: The mounting frame (2) has sorting ports on both sides away from the feeding plate (24). A sorting plate (9) for sorting materials is provided at one of the sorting ports. An electric push rod (91) is fixedly provided on the surface of the sorting plate (9). The electric push rod (91) is fixedly connected to the connecting frame (92) fixedly provided on the mounting frame (2). The sorting plate (9) is made of non-magnetic metal.

10. A visual inspection device for magnetic workpieces according to any one of claims 1-9, characterized in that: It also includes a control terminal (8), which is connected to the industrial camera (4), control motor (11), adjustment motor (73) and electric push rod (91) for synchronously controlling the feeding speed of the conveyor belt (1) and the rotation frequency of the limit plate (5).

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