Visual inspection equipment for fastener key parameters

Abstract

The utility model relates to the technical field of fastener detection, in particular to a visual detection device for key parameters of fasteners, which comprises a separate conveying structure, a workbench and a detection structure, a storage room is fixedly mounted below the workbench, the separate conveying structure is fixedly mounted in the workbench, and the detection structure is fixedly mounted on the surface of the workbench. The distributing mechanism comprises an upper-stage conveying belt, a distributing body and lower-stage conveying belts, the end part of the upper-stage conveying belt fixedly extends to the upper part of the storage room, the distributing body is fixedly mounted below the end part of the upper-stage conveying belt, and the lower-stage conveying belts are symmetrically arranged below the distributing body; a material storage frame is fixedly mounted at the bottom of the material storage room close to the operation position; the end part of the lower-stage conveying belt is positioned above the material storage frame; fasteners can be detected at multiple stations at the same time to improve the detection efficiency, and the fasteners rotate to cooperate with the CCD to perform all-directional and dead-corner-free detection, so that the detection precision and efficiency are improved at the same time; the problems that visual detection equipment is low in detection efficiency and detection dead angles easily exist in single-direction directional detection are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to fastener detection technical field, concretely relates to a kind of visual inspection equipment of fastener key parameter. BACKGROUND

[0002] Fastener as common mechanical parts, after production and manufacture, crack, pit, thread fluid, dimensional deviation or thread streamline disorder etc. Defects can occur, and in order to improve detection efficiency and reduce detection cost, currently mainstream is to detect using machine vision, that is, using CCD camera to take pictures, then using software to analyze image, to know whether the fastener exists defect. For example, the utility model patent with application number "201820297391.1", and the patent name "a visual inspection equipment of fastener" is detected to fastener by rotating table and limiting portion, detection portion, screening portion and cleaning portion arranged in turn and around rotating table, and rotating table can be kept clean, so that detection result is more accurate. However, the patent needs to be detected for multiple times in detection process, and multiple detections reduce overall detection efficiency, and the patent is still detected by single direction to certain surface of fastener, and single directional detection still easily exists detection dead angle, to cause detection result to be wrong.

[0003] Therefore, the utility model provides a kind of visual inspection equipment of fastener key parameter, to solve above-mentioned problems. UTILITY MODEL CONTENT

[0004] The utility model solves the technical problems that existing visual inspection equipment detection efficiency is low and single directional detection easily exists detection dead angle.

[0005] The utility model provides the following technical scheme: a kind of visual inspection equipment of fastener key parameter, including subtransport structure, workbench and detection structure, the workbench below fixed mounting has storage space, the workbench is fixedly installed with subtransport structure, the workbench surface is fixedly installed with detection structure, the subtransport mechanism includes upper conveying belt, material distributing body and lower conveying belt, the upper conveying belt end portion fixedly extends into the storage space upper, the upper conveying belt end portion below fixedly installed with the material distributing body of inverted Y type structure, the material distributing body below is symmetrically provided with lower conveying belt;Any one symmetric side of the workbench is respectively provided with operating position, the storage space bottom is close to the operating position fixedly installed with storage frame, and the lower conveying belt end portion is located above the storage frame.

[0006] The workbench middle part is rotationally installed with a bearing ring, the bearing ring surface is rotationally and penetratively provided with a clamping tool, the bearing ring surface is fixedly provided with first teeth, the workbench bottom is fixedly installed with a first motor, the first motor output shaft is coaxially fixedly connected with a first gear, the first gear is meshed with the first teeth, the clamping tool bottom is provided with second teeth, the bearing ring is coaxially provided with a driving body, the driving body surface is provided with third teeth, the second teeth and the third teeth are meshed with each other, the driving body lower surface is fixedly provided with fourth teeth, the storage interval bottom is fixedly installed with a second motor, the second motor output shaft is coaxially fixedly provided with a second gear, and the second gear is meshed with the fourth teeth.

[0007] The detection structure comprises a vertical arm, a CCD camera and a light supplement lamp, the workbench upper surface is fixedly installed with a vertical arm, the vertical arm upper part is fixedly installed with a CCD camera, and the vertical arm surface is fixedly installed with a light supplement lamp towards the bearing ring side.

[0008] The storage frame bottom is fixedly installed with an electronic weighing scale, and the electronic weighing scale is electrically connected with the upper conveying belt and the lower conveying belt.

[0009] The CCD camera is divided into an upper camera, a horizontal camera and a lower camera, the upper camera is located above the fastener, the horizontal camera is located on the fastener side, the lower camera is located below the fastener, and the upper camera, the horizontal camera and the lower camera all face the fastener.

[0010] The upper camera, the horizontal camera and the lower camera are symmetrically provided with at least two groups on both sides of the bearing ring.

[0011] The beneficial effects of the utility model are as follows:

[0012] The utility model discloses a fastener is shunted to different operation positions through the mutual cooperation of the upper conveying belt, the material distributing body, the lower conveying belt, the workbench and the detection structure, so that multi-station simultaneous detection can be realized to improve the detection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiment or the prior art description, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0014] Figure 1 It is the whole schematic view of the utility model;

[0015] Figure 2 It is the whole cross section structure schematic view of the utility model;

[0016] Figure 3 It is the structure schematic view of the detection structure of the utility model;

[0017] Figure 4 It is the structure schematic view of the subtransport structure of the utility model.

[0018] In the drawing: 1, subtransport structure; 11, upper conveying belt; 12, material distributing body; 13, lower conveying belt; 2, workbench; 21, storage interval; 211, storage frame; 212, electronic weighing scale; 22, operation position; 23, bearing ring; 231, first tooth; 24, clamping tool; 241, second tooth; 25, first motor; 251, first gear; 26, driving body; 261, third tooth; 262, fourth tooth; 27, second motor; 271, second gear; 3, detection structure; 31, vertical arm; 32, CCD camera; 321, upper camera; 322, flat camera; 323, lower camera; 33, light supplement lamp. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Therefore, the following detailed description of the embodiments of the utility model is not intended to limit the scope of the claimed utility model, but only represents some embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the utility model.

[0020] It should be noted that: similar labels and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0021] In the description of the utility model, it is necessary to explain, the term "center", "upper", "lower", "left", "right", "vertical", "horizontal", "internal", "external", "back" and so on indicate the orientation or position relation based on the orientation or position relation shown in the drawing, or it is the orientation or position relation that the utility model product is usually placed when using. These terms are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as a limitation on the utility model.

[0022] It also needs to be explained that, in the description of the utility model, unless otherwise specified and limited, the terms "set", "install", "connect", "connect" should be broadly understood, for example, it can be fixedly connected, can be detachably connected, or integrally connected, can be mechanically connected, can be electrically connected, can be directly connected, can be indirectly connected through an intermediate medium, and can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0023] The embodiment of the present disclosure aims to solve the problems of low detection efficiency and single direction detection of the existing visual detection equipment. Therefore, the embodiment of the present disclosure proposes a visual detection equipment for fastener key parameters, which comprises a distribution structure 1, a workbench 2 and a detection structure 3. The workbench 2 is fixedly installed below a storage room 21. The workbench 2 is fixedly installed with a distribution structure 1. The workbench 2 is fixedly installed with a detection structure 3 on the surface. The distribution mechanism comprises an upper conveying belt 11, a material distribution body 12 and a lower conveying belt 13. The upper conveying belt 11 is fixedly inserted into the upper part of the storage room 21. The upper conveying belt 11 is fixedly installed with a material distribution body 12 of inverted Y-shaped structure below the end. The lower conveying belt 13 is symmetrically arranged below the material distribution body 12. The workbench 2 is provided with an operation position 22 on any symmetrical side. The storage room 21 is fixedly installed with a storage frame 211 near the operation position 22 at the bottom. The end of the lower conveying belt 13 is located above the storage frame 211.

[0024] The one end of the upper conveying belt 11 is used for conveying the completed fasteners to the front process, so as to convey the fasteners to the distribution body 12, the distribution body 12 is in the shape of inverted Y as a whole, so as to distribute the fasteners conveyed by the upper conveying belt 11 to two lower conveying belts 13 respectively, and then convey the fasteners to the storage frame 211 at the operating position 22 through the lower conveying belt 13, so that the completed fasteners enter the storage frame 211 for storage, and then the operator can take the fasteners to the workbench 2 to cooperate with the detection structure 3 to detect the appearance of the fasteners, so that the fasteners can be conveyed to the multi-station, and the multi-station can detect the size, surface defects such as cracks and shape of the fasteners at the same time.

[0025] The workbench 2 is rotatably provided with a bearing ring 23 in the middle, the bearing ring 23 is rotatably provided with a clamping tool 24, the bearing ring 23 is fixedly provided with a first tooth 231 on the surface, the workbench 2 is fixedly provided with a first motor 25 at the bottom, the output shaft of the first motor 25 is coaxially fixedly connected with a first gear 251, the first gear 251 is engaged with the first tooth 231, the clamping tool 24 is provided with a second tooth 241 at the bottom, the bearing ring 23 is coaxially provided with a driving body 26, the driving body 26 is provided with a third tooth 261 on the surface, the second tooth 241 and the third tooth 261 are engaged with each other, the driving body 26 is fixedly provided with a fourth tooth 262 on the lower surface, the storage room 21 is fixedly provided with a second motor 27 at the bottom, the output shaft of the second motor 27 is coaxially fixedly connected with a second gear 271, and the second gear 271 is engaged with the fourth tooth 262.

[0026] The inner wall of the clamping tool 24 is fixedly provided with an infrared detector, which is used for detecting whether the fastener is put in or not, so as to ensure that all the clamping tools 24 are put in the fastener before starting.

[0027] The detection structure 3 comprises a vertical arm 31, a CCD camera 32 and a fill light 33, the vertical arm 31 is fixedly installed on the upper surface of the workbench 2 through bolts, the CCD camera 32 is fixedly installed on the upper part of the vertical arm 31, and the fill light 33 is fixedly installed on the surface of the vertical arm 31 and inclined towards the bearing ring 23.

[0028] It should be noted that the CCD camera 32 can also be selectively slidably or rotatably installed on the vertical arm 31, so as to facilitate the adjustment of the height position and angle of the CCD camera 32, thereby facilitating the flexibility of the CCD camera 32 in detecting the fastener, and improving the detection precision by detecting the fastener at the appropriate position.

[0029] The operator at the operating position 22 takes out the fastener and puts it into the clamping tool 24. After the infrared detector detects that all the clamping tools 24 are put into the fastener, the first motor 25 is started after several seconds. The first motor 25 drives the bearing ring 23 to rotate through the mutual engagement of the first gear 251 and the first tooth 231. The rotation of the bearing ring 23 drives the clamping tool 24 to rotate, so as to move from the operating position 22 to the CCD camera 32 for detection. After the clamping tool 24 moves to the detection structure 3, the second motor 27 is started. The second motor 27 drives the driving body 26 to rotate through the mutual engagement of the second gear 271 and the fourth tooth 262. After the rotation of the driving body 26, the third tooth 261 at the upper part is engaged with the second tooth 241 at the bottom of the clamping tool 24, so that the clamping tool 24 rotates during the rotation of the driving body 26. Thus, the CCD camera 32 can detect the fastener from above and below and horizontally, thereby reducing the number of CCD cameras 32 and avoiding detection dead angles, and improving the detection efficiency and accuracy of the fastener.

[0030] The clamping tool 24 is made of a material with high transparency and high impact resistance, such as polymethyl methacrylate, polycarbonate, polyethylene terephthalate, polystyrene or polypropylene, so that the CCD camera 32 can directly detect the fastener in the clamping tool 24 during the rotation of the clamping tool 24, thereby improving the detection efficiency of the fastener.

[0031] The top and bottom of the clamping tool 24 are transparent structures, so that the CCD camera 32 can directly detect the top and bottom of the fastener.

[0032] The clamping tool 24 is a funnel structure for visual detection of the bolt, so that the bolt can be directly put into the clamping tool 24 and clamped. The transparent material around the clamping tool 24 and the transparent structure at the top and bottom ensure that the CCD camera 32 can directly detect the clamping tool 24 during the rotation of the clamping tool 24. The clamping tool 24 can also adopt any existing structure for clamping fasteners.

[0033] The electronic weighing scale 212 is fixedly installed at the bottom of the storage frame 211 and is electrically connected with the upper conveying belt 11 and the lower conveying belt 13. The electronic weighing scale 212 is used to detect the number of fasteners in the storage frame 211. Since the same model of fasteners is detected in a single batch, the weight of each fastener is the same. The number of fasteners in the storage frame 211 can be obtained by detecting the weight of the entire storage frame 211. When the fasteners stored in the storage frame 211 reach a predetermined amount, the electronic weighing scale 212 transmits an electrical signal to the control box, and the control box controls the upper conveying belt 11 to stop working, thereby avoiding the fasteners stored in the storage frame 211 from falling to the ground due to an excessive amount.

[0034] The CCD camera 32 is divided into an upper camera 321, a horizontal camera 322 and a lower camera 323. The vertical arm 31 is in a "コ" shape structure and penetrates through the workbench 2 and is located on the upper and lower surfaces of the clamping tool 24. The upper camera 321 is fixedly installed on the upper part of the vertical arm 31. The horizontal camera 322 is fixedly installed on the middle part of the vertical arm 31. The lower camera 323 is fixedly installed on the lower part of the vertical arm 31. The upper camera 321, the horizontal camera 322 and the lower camera 323 are all directed towards the clamping tool 24. When the clamping tool 24 moves to the CCD camera 32, the upper camera 321, the horizontal camera 322 and the lower camera 323 simultaneously perform visual detection on the self-rotating bolt, and then analyze whether the key parameters such as the size, surface defects (e.g. cracks) and shape of the bolt are qualified.

[0035] The upper camera 321, the horizontal camera 322 and the lower camera 323 are symmetrically arranged in at least two groups on both sides of the bearing ring 23. Each group of the upper camera 321, the horizontal camera 322 and the lower camera 323 is located on the side of the operating position 22 to form a detection position, and each group of the upper camera 321, the horizontal camera 322 and the lower camera 323 corresponds to each operating position 22. When the operator puts the fastener into the clamp tool in the operating position 22, the first motor 25 drives the bearing ring 23 to rotate through the mutual engagement of the first gear 251 and the first tooth 231. The rotation of the bearing ring 23 drives the clamping tool 24 to rotate, so that the clamping tool 24 rotates from the operating position 22 to the detection position. Then, the second motor 27 drives the driving body 26 to rotate through the mutual engagement of the second gear 271 and the fourth tooth 262. After the rotation of the driving body 26, the third tooth 261 on the upper part of the driving body 26 engages with the second tooth 241 on the bottom of the clamping tool 24. Therefore, the clamping tool 24 rotates during the rotation of the driving body 26, so that the fastener in the clamp tool can be located in the detection position and be detected by the upper camera 321, the horizontal camera 322 and the lower camera 323.

[0036] In use, the fasteners produced by the previous process are first conveyed by the upper conveying belt 11, and then conveyed to the end part of the distribution body 12, and then distributed into the lower conveying belt 13, and then conveyed to the storage frame 211 at the operating position 22 by the lower conveying belt 13, and then taken by the operator. The operator places the fasteners in the storage frame 211 into the clamping tool, and after the infrared sensor detects that all the clamping tools are filled with the fasteners, the first motor 25 is started after several seconds, the first motor 25 drives the bearing ring 23 to rotate through the mutual engagement of the first gear 251 and the first tooth 231, and the bearing ring 23 drives the clamping tool 24 to rotate, so as to move from the operating position 22 to the detection position of the CCD camera 32.

[0037] After the clamping tool 24 moves to the detection position, the second motor 27 is started, the second motor 27 drives the driving body 26 to rotate through the mutual engagement of the second gear 271 and the fourth tooth 262, and after the driving body 26 rotates, the third tooth 261 on the upper part and the second tooth 241 on the bottom of the clamping tool 24 are engaged with each other, so that the clamping tool 24 rotates during the rotation of the driving body 26, and then the upper camera 321, the horizontal camera 322 and the lower camera 323 can simultaneously detect the fasteners from the top and bottom and the horizontal side, so as to reduce the number of CCD cameras 32 and avoid the detection dead angle, and then the detection efficiency and accuracy of the fasteners can be improved.

[0038] After the detection of the upper camera 321, the horizontal camera 322 and the lower camera 323 at the detection position is completed, the first motor 25 is started again, the first motor 25 drives the bearing ring 23 to rotate through the mutual engagement of the first gear 251 and the first tooth 231, and the bearing ring 23 drives the clamping tool 24 to rotate, so as to move the tool clamp from the detection position to the operating position 22, and then the operator takes out the detected fasteners in the clamping tool, and replaces the detected fasteners in the clamping tool with the undetected fasteners in the storage frame 211 to start the next round of detection, so as to complete the detection of the fasteners.

[0039] It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A visual inspection device for key parameters of fasteners, comprising a conveying structure (1), a workbench (2), and an inspection structure (3), wherein a storage chamber (21) is fixedly installed below the workbench (2), the conveying structure (1) is fixedly installed inside the workbench (2), and the inspection structure (3) is fixedly installed on the surface of the workbench (2), characterized in that: The conveying structure (1) includes an upper conveyor belt (11), a material distribution body (12), and a lower conveyor belt (13). The end of the upper conveyor belt (11) is fixedly extended above the storage chamber (21). The material distribution body (12) with an inverted Y-shaped structure is fixedly installed below the end of the upper conveyor belt (11). The lower conveyor belt (13) is symmetrically arranged below the material distribution body (12). At least two operating positions (22) are provided on any symmetrical side of the workbench (2). A storage frame (211) is fixedly installed at the bottom of the storage chamber (21) near the operating position (22). The end of the lower conveyor belt (13) is located above the storage frame (211).

2. The visual inspection device for key parameters of fasteners according to claim 1, characterized in that: A bearing ring (23) is rotatably mounted in the middle of the workbench (2). A clamping fixture (24) for placing fasteners is rotatably mounted on the surface of the bearing ring (23). A first tooth (231) is fixedly provided on the surface of the bearing ring (23). A first motor (25) is fixedly mounted on the bottom of the workbench (2). A first gear (251) is coaxially fixedly connected to the output shaft of the first motor (25). The first gear (251) meshes with the first tooth (231). A second tooth (24) is provided at the bottom of the clamping fixture (24). 1) A drive body (26) is coaxially arranged inside the bearing ring (23). A third tooth (261) is provided on the surface of the drive body (26). The second tooth (241) meshes with the third tooth (261). A fourth tooth (262) is fixedly provided on the lower surface of the drive body (26). A second motor (27) is fixedly installed at the bottom of the storage chamber (21). A second gear (271) is coaxially fixed on the output shaft of the second motor (27). The second gear (271) meshes with the fourth tooth (262).

3. The visual inspection device for key parameters of fasteners according to claim 2, characterized in that: The detection structure (3) includes a vertical arm (31), a CCD camera (32) and a fill light (33). The vertical arm (31) is fixedly installed on the upper surface of the worktable (2). The CCD camera (32) is fixedly installed on the upper part of the vertical arm (31). The fill light (33) is fixedly installed on the surface of the vertical arm (31) facing the bearing ring (23).

4. The visual inspection device for key parameters of fasteners according to claim 3, characterized in that: An electronic weighing scale (212) is fixedly installed at the bottom of the storage box (211), and the electronic weighing scale (212) is electrically connected to the upper conveyor belt (11) and the lower conveyor belt (13).

5. The visual inspection device for key parameters of fasteners according to claim 4, characterized in that: The CCD camera (32) is divided into an upper camera (321), a horizontal camera (322) and a lower camera (323). The upper camera (321) is located above the fastener, the horizontal camera (322) is located on the side of the fastener, and the lower camera (323) is located below the fastener. The upper camera (321), the horizontal camera (322) and the lower camera (323) all face the fastener.

6. The visual inspection device for key parameters of fasteners according to claim 5, characterized in that: The upper camera (321), the horizontal camera (322), and the lower camera (323) are symmetrically arranged in at least two sets on both sides of the bearing ring (23).

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