Workpiece surface defect detection system

Abstract

The utility model relates to the technical field of workpiece surface detection, in particular to a workpiece surface defect detection system, which comprises a conveying mechanism, a detection mechanism and a detection mechanism, the first defect detection mechanism is arranged on the upper side of the conveying mechanism and is used for detecting the flatness of the plane side of the workpiece; the second defect detection mechanism is arranged on the upper side of the conveying mechanism and is used for detecting the bending degree of the tooth surface side of the workpiece; the turnover mechanism is arranged between the first defect detection mechanism and the second defect detection mechanism and is used for turning over the workpieces on the conveying mechanism; and the removing mechanism is electrically connected with the first defect detection mechanism and the second defect detection mechanism and is used for removing unqualified workpieces. The utility model discloses a workpiece surface defect detection system, and aims to solve the problems of low manual detection efficiency and high cost in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece surface detection, and more specifically, to a workpiece surface defect detection system. Background Art

[0002] Computer components utilize numerous integrated circuits. It's well known that high temperatures are the biggest enemy of integrated circuits. High temperatures can not only cause unstable system operation and shorten service life, but can even damage certain components. The heat that causes high temperatures doesn't originate from outside the computer, but rather from within it, specifically within the integrated circuits. The function of a heat sink is to absorb this heat and dissipate it either inside or outside the computer chassis, maintaining a normal temperature for computer components.

[0003] Most radiators absorb heat by contacting the surface of the heat-generating component through the flat side, and then dissipate the heat through multiple heat sinks arranged side by side. The multiple heat sinks arranged side by side form a tooth shape on the radiator. In order to maintain the heat dissipation effect, it is necessary to ensure the flatness of the flat side of the radiator and the parallelism of the tooth side of the radiator to reduce the decrease in heat dissipation efficiency caused by the bending of the tooth side.

[0004] In the prior art, radiator inspection is usually performed manually, which has the problems of low inspection efficiency and high labor cost. Utility Model Content

[0005] The main purpose of the utility model is to provide a workpiece surface defect detection system, aiming to solve the problems of low efficiency and high cost of manual detection in the prior art.

[0006] In order to solve the above technical problems, a workpiece surface defect detection system is proposed, comprising: a conveying mechanism for conveying the workpiece;

[0007] a first defect detection mechanism, disposed on the upper side of the conveying mechanism, for detecting the flatness of the plane side of the workpiece;

[0008] a second defect detection mechanism, provided on the upper side of the conveying mechanism, for detecting the curvature of the tooth surface side of the workpiece;

[0009] a turning mechanism, disposed between the first defect detection mechanism and the second defect detection mechanism, for turning over the workpiece on the conveying mechanism;

[0010] The rejecting mechanism is electrically connected to the first defect detection mechanism and the second defect detection mechanism respectively, and is used to reject unqualified workpieces.

[0011] In any of the above technical solutions, further, the first defect detection mechanism includes:

[0012] a laser emitter, disposed on the upper side of the conveying mechanism, for emitting laser light toward the workpiece on the conveying mechanism;

[0013] Two binocular cameras are symmetrically arranged on both sides of the laser transmitter, and are both used to obtain images of the plane side of the workpiece;

[0014] The first processor is electrically connected to the two binocular cameras and the rejection mechanism respectively, and is used to calculate the flatness of the plane side of the workpiece based on the images obtained by the binocular cameras.

[0015] In any of the above technical solutions, further, the second defect detection mechanism includes:

[0016] Two first light sources are symmetrically arranged on both sides of the conveying mechanism for illuminating the workpiece;

[0017] Two first cameras are symmetrically arranged on both sides of the conveying mechanism, and the two first cameras are coaxially arranged to take pictures of both sides of the front side of the tooth side surface of the workpiece;

[0018] The second processor is electrically connected to the two first cameras and the rejection mechanism respectively, and is used to calculate the curvature of the tooth side surface of the workpiece based on the photos taken by the first cameras.

[0019] In any of the above technical solutions, further, the second defect detection mechanism also includes:

[0020] a second light source, disposed on the upper side of the conveying mechanism, for illuminating the workpiece;

[0021] a second camera, disposed on the upper side of the conveying mechanism, for photographing the upper side of the tooth surface of the workpiece;

[0022] The second processor is electrically connected to the second camera, and is used to calculate the curvature of the tooth surface of the workpiece based on the photos taken by the first camera and the photos taken by the second camera.

[0023] In any of the above technical solutions, further comprising:

[0024] A posture adjusting member is provided on the conveying mechanism, and two posture adjusting members are symmetrically provided. The posture adjusting members are used to guide the orientation of the workpiece.

[0025] In any of the above technical solutions, further, the flipping mechanism includes:

[0026] A dislocation mechanism is provided corresponding to the conveying mechanism;

[0027] A rotating mechanism is provided on the dislocation mechanism, and the dislocation mechanism is used to drive the rotating mechanism to move;

[0028] The clamping mechanism is arranged on the rotating mechanism, and the rotating mechanism is used to drive the clamping mechanism to rotate, and the clamping mechanism is used to take and place the workpiece.

[0029] The beneficial effects are:

[0030] 1. The workpiece surface defect detection system of the present invention conveys the radiator workpiece to be inspected through a conveying mechanism, and performs flatness inspection on the coplanar plane side through a first defect detection mechanism provided on the conveying mechanism. The workpiece is then turned over by a flipping mechanism, and the curvature of the tooth surface side is inspected by a second defect detection mechanism. Automatic inspection replaces manual inspection, with high inspection efficiency, guaranteed quality, and labor saving.

[0031] 2. The workpiece surface defect detection system of the present invention removes workpieces with insufficient flatness and excessive curvature through a rejection mechanism electrically connected to the first defect detection mechanism and the second defect detection mechanism, and retains workpieces that meet the quality requirements, thereby automatically deciding whether to retain or discard the workpiece after detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0033] Figure 1 This is a schematic diagram of the first perspective stereoscopic structure of the workpiece surface defect detection system of the first embodiment of the utility model;

[0034] Figure 2 This is a schematic diagram of the third perspective structure of the workpiece surface defect detection system according to the first embodiment of the present utility model;

[0035] Figure 3 It is a schematic diagram of the three-dimensional structure of a workpiece surface defect detection system according to the second embodiment of the present utility model.

[0036] The following are the descriptions of the reference numerals:

[0037] 1. Conveying mechanism;

[0038] 2. First defect detection mechanism; 201. Laser emitter; 202. Binocular camera;

[0039] 3. Second defect detection mechanism; 301. First light source; 302. First camera; 303. Second light source; 304. Second camera;

[0040] 4. Flipping mechanism; 401. Dislocation mechanism; 402. Rotation mechanism; 403. Clamping mechanism;

[0041] 5. Eliminate institutions;

[0042] 6. Posture adjustment parts. DETAILED DESCRIPTION

[0043] Below, example embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present application, not all of the embodiments of the present application. It should be understood that the present application is not limited to the example embodiments described herein. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0044] It should be noted that, as shown in this application and the claims, unless the context clearly indicates an exception, the words "a," "an," "an," and / or "the" do not refer to the singular and may include the plural. Generally speaking, the terms "comprise" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0045] If the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0046] In this utility model, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0047] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0048] A workpiece surface defect detection system of the present application is described in detail through the following embodiments.

[0049] In this embodiment, if Figures 1 to 3 As shown, the workpiece surface defect detection system includes:

[0050] Conveying mechanism 1, used for conveying workpieces;

[0051] The first defect detection mechanism 2 is provided on the upper side of the conveying mechanism 1 and is used to detect the flatness of the plane side of the workpiece;

[0052] The second defect detection mechanism 3 is provided on the upper side of the conveying mechanism 1 and is used to detect the curvature of the tooth surface side of the workpiece;

[0053] The turning mechanism 4 is provided between the first defect detection mechanism 2 and the second defect detection mechanism 3 and is used to turn over the workpiece on the conveying mechanism 1;

[0054] The rejecting mechanism 5 is electrically connected to the first defect detection mechanism 2 and the second defect detection mechanism 3 respectively, and is used to reject unqualified workpieces.

[0055] In this technical solution, the conveying mechanism 1 is a belt conveyor, arranged horizontally in a left-right direction, capable of conveying radiator workpieces horizontally to the right. A first defect detection mechanism 2 is mounted on the upper side of the left portion of the conveying mechanism 1 via an aluminum profile bracket, and a second defect detection mechanism is mounted to the right of the first defect detection mechanism 2. A flipping mechanism 4 is positioned between the first defect detection mechanism 2 and the second defect detection mechanism 3, capable of flipping the workpiece with the flat side facing upward on the conveying mechanism 1 at the corresponding position of the first defect detection mechanism 2 horizontally 180 degrees and continuing to convey it with the tooth side facing upward after flipping. A rejection mechanism 5 is a telescopic cylinder arranged in the right area of ​​the conveying mechanism 1, extending and retracting in the forward and backward directions. It is electrically connected to the first defect detection mechanism 2 and the second defect detection mechanism 3 via an encoder and a controller, respectively. When the first defect detection mechanism 2 and the second defect detection mechanism 3 detect a defective workpiece, the encoder and controller transmit the corresponding workpiece number information and unqualified information to the rejection mechanism 5. When the corresponding workpiece moves to the rejection mechanism 5, the rejection mechanism 5 pushes the corresponding workpiece forward, facilitating automatic screening and secondary processing of the workpiece.

[0056] In this embodiment, the first defect detection mechanism 2 includes:

[0057] The laser emitter 201 is provided on the upper side of the conveying mechanism 1 and is used to emit laser light toward the workpiece on the conveying mechanism 1;

[0058] Two binocular cameras 202 are symmetrically arranged on both sides of the laser emitter 201, and are both used to obtain images of the plane side of the workpiece;

[0059] The first processor (not shown) is electrically connected to the two binocular cameras 202 and the rejection mechanism 5 respectively, and is used to calculate the flatness of the plane side of the workpiece based on the image acquired by the binocular camera 202.

[0060] In this technical solution, the laser emitter 201 is a linear laser emitting mechanism. Laser emitter 201 is mounted above the conveyor mechanism 1, facing downward, via an aluminum profile bracket. It emits a linear laser extending in the forward and backward directions toward the workpiece surface. Two binocular cameras 202 are symmetrically positioned on either side of the laser emitter 201, both facing the position where the laser emitter 201 is positioned. During inspection, as the conveyor mechanism 1 moves the workpiece from the left side of the laser emitter 201 to the right, the forward and backward linear laser illuminates various locations on the left and right sides of the workpiece's flat surface. Simultaneously, the two binocular cameras 202 capture an image of a linear light strip on the workpiece surface. A first processor (not shown) then extracts the center point of the light strip image, assigns it a coordinate position, and constructs a linear structure optical model. The flatness of the multiple locations is then calculated and averaged using the least squares method. Finally, the first processor determines whether the workpiece is acceptable based on the calculated results and sends any unacceptable results to the rejection mechanism 5.

[0061] In this embodiment, the second defect detection mechanism 3 includes:

[0062] Two first light sources 301 are symmetrically arranged on both sides of the conveying mechanism 1 for illuminating the workpiece;

[0063] Two first cameras 302 are symmetrically arranged on both sides of the conveying mechanism 1, and the two first cameras 302 are coaxially arranged to take pictures of both sides of the front side of the workpiece tooth side surface;

[0064] The second processor (not shown) is electrically connected to the two first cameras 302 and the rejecting mechanism 5 , and is used to calculate the curvature of the tooth flank of the workpiece based on the photos taken by the first camera 302 .

[0065] In this technical solution, two first cameras 302 are symmetrically and horizontally positioned on either side of the conveyor mechanism 1. Each first light source 301 is a bar-shaped light source, positioned above each of the two first cameras 302 and angled toward the workpiece on the conveyor mechanism 1. During operation, the first light sources 301 illuminate the workpiece's heat dissipation fins while the two first cameras 302 simultaneously capture images of the workpiece from both sides. A second processor (not shown) calculates the dark area in the captured images; larger dark areas indicate a higher degree of curvature in the workpiece.

[0066] In this embodiment, the second defect detection mechanism 3 further includes:

[0067] The second light source 303 is provided on the upper side of the conveying mechanism 1 and is used to illuminate the workpiece;

[0068] The second camera 304 is provided on the upper side of the conveying mechanism 1 and is used to take pictures of the upper side of the tooth surface of the workpiece;

[0069] The second processor is electrically connected to the second camera 304 , and is configured to calculate the curvature of the tooth surface of the workpiece based on the two photos taken by the first camera 302 and the photos taken by the second camera 304 .

[0070] In this technical solution, the second light source 303 is configured in a ring or square shape with a hollow center, and is positioned directly downward on the upper side of the conveyor mechanism 1. The second camera 304 is positioned in the center of the second light source 303 and directly downward on the upper side of the conveyor mechanism 1. The combination of the first camera 302 and the first light source 301 allows for the calculation of the curvature of the workpiece tooth flank near the front and rear sides. The combination of the second camera 304 and the second light source 303 allows for the calculation of the curvature of the upper side of the workpiece tooth flank, thereby improving detection accuracy.

[0071] In this embodiment, it also includes:

[0072] The posture adjusting member 6 is provided on the conveying mechanism 1 , and two posture adjusting members 6 are symmetrically provided. The posture adjusting member 6 is used to guide the orientation of the workpiece.

[0073] In this technical solution, the posture adjustment member 6 is a guide block with an arcuate surface, fixed symmetrically to the upper side of the conveying mechanism 1. Because the workpiece is usually tilted during loading, which increases the difficulty of subsequent detection by the first defect detection mechanism 2 and the second defect detection mechanism 3, the posture adjustment member 6 is provided to guide the orientation of the workpiece, thereby improving the detection speed and accuracy of the first defect detection mechanism 2 and the second defect detection mechanism 3.

[0074] In this embodiment, the turning mechanism 4 includes:

[0075] The dislocation mechanism 401 is provided corresponding to the conveying mechanism 1;

[0076] The rotating mechanism 402 is provided on the dislocation mechanism 401, and the dislocation mechanism 401 is used to drive the rotating mechanism 402 to move;

[0077] The clamping mechanism 403 is provided on the rotating mechanism 402 . The rotating mechanism 402 is used to drive the clamping mechanism 403 to rotate. The clamping mechanism 403 is used to take and place workpieces.

[0078] In the present technical solution, the dislocation mechanism 401 is a vertically arranged screw slider moving mechanism, the rotating mechanism 402 is a rotating cylinder with a rotating axis arranged horizontally along the front-back direction, the rotating mechanism 402 is fixedly arranged on the slider of the dislocation mechanism 401, and the clamping mechanism 403 is a clamping cylinder, which is fixed on the rotating axis of the rotating mechanism 402. When in use, the dislocation mechanism 401 drives the rotating mechanism 402 and the clamping mechanism 403 to move down to the position corresponding to the workpiece on the conveying mechanism 1, and then the clamping mechanism 403 clamps the left and right sides of the workpiece, and then the dislocation mechanism 401 moves the rotating mechanism 402 and the clamping mechanism 403 up a certain distance, and then the rotating mechanism 402 is controlled to start and drive the clamping mechanism 403 to rotate 180 degrees, and finally the dislocation mechanism 401 drives the rotating mechanism 402 and the clamping mechanism 403 to move down to place the workpiece on the surface of the conveying mechanism 1, and then the rotating mechanism 402 and the clamping mechanism 403 are controlled to move up to a position that does not hinder the movement of the workpiece.

[0079] In other technical solutions, the flipping mechanism 4 is configured as a mechanical arm or a robot, which can be purchased on the market.

[0080] While various embodiments of the present disclosure have been described above, the above descriptions are illustrative, non-exhaustive, and not intended to be limiting of the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or improvements to existing technologies, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A workpiece surface defect detection system, characterized in that: include: A conveying mechanism (1) for conveying a workpiece; A first defect detection mechanism (2) is provided on the upper side of the conveying mechanism (1) and is used to detect the flatness of the plane side of the workpiece; A second defect detection mechanism (3) is provided on the upper side of the conveying mechanism (1) and is used to detect the curvature of the tooth surface side of the workpiece; a turning mechanism (4), arranged between the first defect detection mechanism (2) and the second defect detection mechanism (3), and used for turning over the workpiece on the conveying mechanism (1); The rejection mechanism (5) is electrically connected to the first defect detection mechanism (2) and the second defect detection mechanism (3), respectively, and is used to reject unqualified workpieces.

2. The workpiece surface defect detection system according to claim 1, characterized in that: The first defect detection mechanism (2) comprises: A laser emitter (201) is arranged on the upper side of the conveying mechanism (1) and is used to emit laser light toward a workpiece on the conveying mechanism (1); Two binocular cameras (202) are symmetrically arranged on both sides of the laser emitter (201), and are both used to obtain images of the plane side of the workpiece; The first processor is electrically connected to the two binocular cameras (202) and the rejection mechanism (5) respectively, and is used to calculate the flatness of the plane side of the workpiece based on the image acquired by the binocular camera (202).

3. The workpiece surface defect detection system according to claim 1, characterized in that: The second defect detection mechanism (3) comprises: Two first light sources (301) are symmetrically arranged on both sides of the conveying mechanism (1) and are used to illuminate the workpiece; Two first cameras (302) are symmetrically arranged on both sides of the conveying mechanism (1), and the two first cameras (302) are coaxially arranged and used to take pictures of both sides of the front side of the tooth side surface of the workpiece; The second processor is electrically connected to the two first cameras (302) and the rejection mechanism (5) respectively, and is used to calculate the curvature of the tooth side surface of the workpiece based on the photos taken by the first camera (302).

4. The workpiece surface defect detection system according to claim 3, characterized in that: The second defect detection mechanism (3) further comprises: A second light source (303) is provided on the upper side of the conveying mechanism (1) and is used to illuminate the workpiece; A second camera (304) is provided on the upper side of the conveying mechanism (1) and is used to take a picture of the upper side of the tooth surface of the workpiece; The second processor is electrically connected to the second camera (304), and is used to calculate the curvature of the tooth surface of the workpiece based on the two photos taken by the first camera (302) and the second camera (304).

5. The workpiece surface defect detection system according to claim 1, characterized in that: Also includes: A posture adjusting member (6) is provided on the conveying mechanism (1), and two posture adjusting members (6) are symmetrically provided. The posture adjusting member (6) is used to guide the orientation of the workpiece.

6. The workpiece surface defect detection system according to claim 1, characterized in that: The turning mechanism (4) comprises: A dislocation mechanism (401) is provided corresponding to the conveying mechanism (1); A rotating mechanism (402) is provided on the dislocation mechanism (401), and the dislocation mechanism (401) is used to drive the rotating mechanism (402) to move; The clamping mechanism (403) is arranged on the rotating mechanism (402), and the rotating mechanism (402) is used to drive the clamping mechanism (403) to rotate, and the clamping mechanism (403) is used to take and place workpieces.

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