Visual inspection machine

Abstract

The utility model discloses a visual inspection machine which comprises a first inspection station, a second transplanting mechanism and a second inspection station, the first transplanting mechanism comprises a first detection station and a second detection station, the first detection station and the second detection station are oppositely arranged, the second transplanting mechanism is arranged between the first detection station and the second detection station, the first detection station comprises a first rotating platform and a first detection camera, and the first rotating platform is provided with a second positioning jig; and the second detection station comprises a second rotating platform and a second detection camera, and the second rotating platform is provided with a third positioning jig. In this way, the two detection stations are arranged on the visual detection machine in a back-to-back mode, and therefore the accuracy and reliability of product detection are guaranteed; and secondly, through the arrangement of the rotating platform, cambered surface detection of existing watch shells, shells of earphone charging bins and other products can be dealt with, and compared with an existing visual detection machine, the visual detection machine has the advantage of being higher in detection efficiency.

Description

Technical Field

[0001] The utility model relates to the field of AOI vision detection equipment, in particular to a vision detector. Background Art

[0002] With the improvement of living standards, people's requirements for the quality of electronic products are getting higher and higher. For retailers, the appearance of products often determines whether they can provide the best guarantee to customers. For example, the charging cases of earphones and the cases of watches need to be strictly inspected for appearance when leaving the factory to avoid defective products with appearance defects from entering the market. The traditional inspection method is to inspect by human eyes, which not only makes mistakes but also has high inspection costs. Later, vision detection equipment emerged, but the automation degree of the existing vision detectors is not high enough. Specifically, the existing vision detection usually uses one detection camera to complete the shooting. When the detection camera fails and is not discovered in time, a large number of defective products will flow into the next station, resulting in more products needing to be reinspected or flowing into the market, causing inestimable brand losses. Secondly, the existing vision detectors can only detect the appearance of products with regular shapes, such as cube-shaped products, and cannot complete photographing and detection for the arc surfaces between surfaces, which is very inconvenient.

[0003] Therefore, it is necessary to study a new technical solution to solve the above problems. Content of the Utility Model

[0004] In order to solve the defects and deficiencies of the above-mentioned prior art, the utility model provides a vision detector, which has two detection stations arranged back to back on the vision detector, thus ensuring the accuracy and reliability of product detection. Secondly, by setting a rotating platform, it can detect the arc surfaces of products such as the cases of existing watches and earphone charging bins, and the vision detector of this application has the advantage of higher detection efficiency compared with the existing vision detectors.

[0005] To achieve the above object, the utility model adopts the following technical solution:[[]]

[0006] A vision detector includes a first detection station, a second transfer mechanism, and a second detection station; the first detection station and the second detection station are arranged back to back, the second transfer mechanism is arranged between the first detection station and the second detection station, and the second transfer mechanism is used to move the product to be detected at the first detection station to the second detection station.

[0007] The first detection station includes a first rotating platform and a first detection camera, and the first rotating platform has a plurality of second positioning fixtures for positioning the product to be detected.

[0008] The second inspection station includes a second rotating platform and a second inspection camera. The second rotating platform is provided with a plurality of third positioning fixtures for positioning the product to be inspected.

[0009] As a preferred solution, the second positioning jig and the third positioning jig are provided with vacuum adsorption air channels for adsorbing the product to be tested.

[0010] As a preferred solution, the second positioning jig includes a positioning block and a profiling jig, and the profiling jig is mounted on the first rotating platform via the positioning block; the profiling jig is made of Teflon.

[0011] As a preferred solution, at least a portion of the surface of the profiling jig is covered with a silicone protective layer.

[0012] As a preferred solution, the first rotating platform includes a mounting plate, a first motor, and a second motor, and a plurality of the second positioning fixtures are installed on the mounting plate at intervals along the length direction of the mounting plate.

[0013] The first motor is used to drive the entire mounting plate to swing left and right; the second motor is installed on the mounting plate and is used to drive the second positioning fixture to rotate around its vertical axis.

[0014] As a preferred solution, the second positioning fixture is installed and connected with a cross-steering gear, and the second motor drive is connected with a rotating shaft adapted to the cross-steering gear.

[0015] As a preferred solution, a third transfer mechanism is further included, and the third transfer mechanism is used to move the product to be tested on the second rotating platform to the next station.

[0016] Compared with the existing technology, the present invention has obvious advantages and beneficial effects. Specifically, it can be seen from the above technical solution that it mainly ensures the accuracy and reliability of product inspection by arranging two inspection stations facing each other on the visual inspection machine; secondly, by providing a rotating platform, it can cope with the arc surface inspection of existing products such as watch cases and earphone charging case shells, and the visual inspection machine of this application has the advantage of higher inspection efficiency compared with existing visual inspection machines.

[0017] In order to more clearly illustrate the structural features and effects of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the three-dimensional structure of an embodiment of the present utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional structure of the embodiment of the present utility model without the protective cover;

[0020] Figure 3 A top view schematic diagram of an embodiment of the present utility model;

[0021] Figure 4 is Figure 3 A partial enlarged view of part A in

[0022] Figure 5 is Figure 3 A partial enlarged view of part B in

[0023] Figure 6 is Figure 3 A partial enlarged view of part C in

[0024] Figure 7 A first partial structural schematic diagram of a loading machine in an embodiment of the present utility model;

[0025] Figure 8 is Figure 7 A partial enlarged view of

[0026] Figure 9 A second partial structural schematic diagram of a loading machine in an embodiment of the present utility model;

[0027] Figure 10 is Figure 9 A partial enlarged view of

[0028] Figure 11 A partial structural schematic diagram of an inspection machine in an embodiment of the present utility model;

[0029] Figure 12 A partial structural schematic diagram of a discharging machine in an embodiment of the present utility model;

[0030] Figure 13 Another partial structural schematic diagram of an inspection machine in an embodiment of the present utility model;

[0031] Figure 14 A structural schematic diagram of a first rotating platform in an embodiment of the present utility model;

[0032] Figure 15 is Figure 14 A partial enlarged view of

[0033] Figure 16 A third partial structural schematic diagram of a loading machine in an embodiment of the present utility model.

[0034] Explanation of the attached drawing reference numerals:

[0035] 10. Loader; 11. Full tray loading position; 111. First clamping mechanism; 12. Loading arm; 13. First transfer mechanism; 131. First transfer platform; 132. First transport arm; 14. First mobile platform; 141. First receiving plate; 142. Second receiving plate; 15. Retrieving position; 151. Third clamping mechanism; 152. Lifting mechanism; 16. Empty tray receiving position; 161. Second clamping mechanism; 20. Inspection machine; 21. First inspection station; 211. First rotating platform; 2111. Mounting plate; 2112. First motor; 2113. Second motor; 212. First inspection camera Camera; 213, second positioning fixture; 2131, positioning block; 2132, profiling fixture; 2133, product to be tested; 22, second transferring mechanism; 23, second inspection station; 231, second rotating platform; 232, second inspection camera; 24, third transferring mechanism; 30, unloading machine; 31, OK tray loading position; 311, first receiving position; 32, NG tray loading position; 321, second receiving position; 33, OK product receiving position; 34, NG product receiving position; 35, first unloading arm; 36, second unloading arm; 37, OK product buffer position; 38, NG product buffer position; 39, unloading position. DETAILED DESCRIPTION

[0036] The following will provide a clear and complete description of the technical solutions in the present embodiment of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only preferred embodiments of the present invention.

[0037] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended solely for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0039] Refer to the attached Figures 1 to 16, A vision inspection machine 20 in an embodiment of the present utility model includes a first inspection station 21, a second transfer mechanism 22, and a second inspection station 23; the first inspection station 21 and the second inspection station 23 are arranged back to back, the second transfer mechanism 22 is arranged between the first inspection station 21 and the second inspection station 23, and the second transfer mechanism 22 is used to move the product to be inspected 2133 at the first inspection station 21 to the second inspection station 23;

[0040] The first inspection station 21 includes a first rotating platform 211 and a first inspection camera 212, and there are multiple second positioning fixtures 213 for positioning the product to be inspected 2133 on the first rotating platform 211;

[0041] The second inspection station 23 includes a second rotating platform 231 and a second inspection camera 232, and there are multiple third positioning fixtures for positioning the product to be inspected 2133 on the second rotating platform 231.

[0042] As a preferred embodiment, the second positioning fixture 213 and the third positioning fixture are provided with vacuum adsorption air channels for adsorbing the product to be inspected 2133.

[0043] As a preferred embodiment, the second positioning fixture 213 includes a positioning block 2131 and a profiling fixture 2132, and the profiling fixture 2132 is installed on the first rotating platform 211 through the positioning block 2131; the profiling fixture 2132 is made of Teflon.

[0044] As a preferred embodiment, at least part of the surface of the profiling fixture 2132 is coated with a silica gel protective layer.

[0045] As a preferred embodiment, the first rotating platform 211 includes a mounting plate 2111, a first motor 2112, and a second motor 2113, and multiple second positioning fixtures 213 are installed on the mounting plate 2111 at intervals along the length direction of the mounting plate 2111,

[0046] The first motor 2112 is used to drive the entire mounting plate 2111 to swing left and right; the second motor 2113 is installed on the mounting plate 2111 and is used to drive the second positioning fixture 213 to rotate around its vertical axis.

[0047] As a preferred embodiment, the second positioning fixture 213 is installed and connected with a cross-steering device, and the second motor 2113 is drivingly connected with a rotating shaft adapted to the cross-steering device.

[0048] As a preferred embodiment, it further includes a third transfer mechanism 24, and the third transfer mechanism 24 is used to move the product to be inspected 2133 on the second rotating platform 231 to the next station.

[0049] Specifically: This embodiment also discloses an AOI vision detection device applied with the above-mentioned vision detection machine 20, including a loading machine 10, a detection machine 20, and an unloading machine 30 arranged in sequence from left to right; the loading machine 10 is provided with a full-disk loading position 11, a loading arm 12, and a first transfer mechanism 13, and the detection machine 20 is sequentially provided with a first detection station 21, a second transfer mechanism 22, a second detection station 23, and a third transfer mechanism 24;

[0050] The loading arm 12 is used to move the to-be-detected products at the full-disk loading position 11 to the first transfer mechanism 13, the first transfer mechanism 13 is used to move the to-be-detected products to the first detection station 21, the second transfer mechanism 22 is used to move the to-be-detected products at the first detection station 21 to the second detection station 23, and the third transfer mechanism 24 is used to move the to-be-detected products at the second detection station 23 to the unloading machine 30.

[0051] Specifically: The loading machine 10 is further provided with a first moving platform 14, a material-taking position 15, and an empty-disk receiving position 16, and the first transfer mechanism 13 includes a first transfer platform 131 and a first handling arm 132; the empty-disk receiving position 16 and the full-disk loading position 11 are respectively arranged at the rear side and the front side of the loading machine 10, and the material-taking position 15 is located between the empty-disk receiving position 16 and the full-disk loading position 11; as Figure 16 shown, the first moving platform 14 includes a first receiving plate 141 and a second receiving plate 142 that move synchronously, the first receiving plate 141 reciprocates between the full-disk loading position 11 and the material-taking position 15, and the second receiving plate 142 reciprocates between the material-taking position 15 and the empty-disk receiving position 16.

[0052] During operation, the first receiving plate 141 moves to the full-disk loading position 11 to pick up the first tray. At this time, the second receiving plate 142 is located at the material-taking position 15. After the first receiving plate 141 picks up the first tray, the first receiving plate 141 moves the first tray to the material-taking position 15; then, the first loading arm 12 takes out the to-be-detected products of the first tray to the first transfer platform 131, and the first handling arm 132 moves the to-be-detected products on the first transfer platform 131 to the first detection station 21; the first transfer platform 131 has a plurality of first positioning fixtures for positioning the to-be-detected products;

[0053] It should be supplemented that a lifting mechanism 152 is also provided at the material taking position 15. When the first receiving plate 141 moves the first tray to the material taking position 15, the lifting mechanism 152 lifts the first tray, so that the first tray is separated from the first receiving plate 141. Then, the first receiving plate 141 resets to the full tray loading position 11 to wait for receiving the second tray. At this time, the second receiving plate 142 is located at the material taking position 15, and the lifting mechanism 152 puts the first tray down into the second receiving plate 142. When the first receiving plate 141 takes the second tray to the material taking position 15, the second receiving plate 142 moves the first tray (the tested products have been taken out) to the empty tray collecting position 16; and so on in a cycle. The full tray loading position 11 has a first clamping mechanism 111, and the empty tray collecting position 16 has a second clamping mechanism 161. The first clamping mechanism 111 is used to clamp the second-to-bottom tray in the tray bin at the full tray loading position 11, so that the bottom tray is separated and falls onto the first receiving plate 141; the second clamping mechanism 161 is used to clamp the empty tray on the second receiving plate 142, so that the empty tray is separated from the second receiving plate 142 and falls into the empty tray bin at the empty tray collecting position 16. The lifting mechanism 152, the first clamping mechanism 111, and the second clamping mechanism 161 are mainly formed by assembling cylinders; of course, a third clamping mechanism 151 is also installed on the lifting mechanism 152. During operation, the third clamping mechanism 151 first clamps the first tray, and then the lifting mechanism 152 raises the third clamping mechanism 151, so as to separate the first tray from the first receiving plate 141. The lifting mechanism 152 includes two vertically arranged lifting cylinders, and the third clamping mechanism 151 includes two horizontally arranged clamping cylinders; the two lifting cylinders are arranged opposite to each other, and the two clamping cylinders are arranged opposite to each other; the specific setting methods of the first clamping mechanism 111 and the second clamping mechanism 161 are basically the same as that of the third clamping mechanism 151 and are conventional technologies, which will not be elaborated here.

[0054] The first detection station 21 includes a first rotating platform 211 and multiple first detection cameras 212. The first rotating platform 211 has multiple second positioning fixtures 213 for positioning the tested products. The aforementioned first handling arm 132 transports the tested products on the first transfer platform 131 to the first rotating platform 211.

[0055] The second detection station 23 includes a second rotating platform 231 and multiple second detection cameras 232. The second rotating platform 231 has multiple third positioning fixtures for positioning the tested products. The aforementioned second transplanting mechanism 22 transports the tested products at the first detection station 21 to the second rotating platform 231.

[0056] The second transfer mechanism 22 includes a second transfer platform and a second handling arm. The third transfer mechanism 24 includes a third transfer platform and a third handling arm. The structures of the second transfer platform, the third transfer platform and the aforementioned first transfer platform 131 are basically the same. A positioning fixture for positioning the product to be tested is provided on the transfer platform, and is used to drive the product to be tested on the fixture to move to the right for the handling arm to grab and transfer it to the next station. In addition, the left and right movement of the first transfer platform 131, the second transfer platform and the third transfer platform can be realized by a cylinder and a guide rod, or by a motor and a screw structure. This is a conventional technology and not the focus of protection of the present invention, so it will not be elaborated here.

[0057] The first handling arm 132, the second handling arm, the third handling arm and the first blanking arm 35 and the second blanking arm 36 described below have substantially the same structure, and all include a plurality of vacuum adsorption cylinders, and adsorb and move the product to be tested by means of vacuum adsorption. Similarly, the left and right movement of the first handling arm 132, the second handling arm, the third handling arm, the first blanking arm 35 and the second blanking arm 36 can be realized by structures such as a cylinder, a guide rod and a gantry, or by structures such as a motor, a gantry and a transmission screw. These moving structures are conventional technologies and not the focus of protection of the present invention, so they will not be elaborated here.

[0058] It can be supplemented that the first positioning fixture, the second positioning fixture 213 and the third positioning fixture are substantially the same. Here, the second positioning fixture 213 is taken as an example for illustration: The second positioning fixture 213 generally includes a positioning block 2131 and a profiling fixture 2132. The profiling fixture 2132 is installed on the equipment through the positioning block 2131. The profiling fixture 2132 is preferably made of Teflon. Preferably, an adsorption air channel is provided in the profiling fixture 2132 and the positioning block 2131, and the adsorption air channel is connected to a trachea, and the product to be tested is adsorbed and stabilized by means of vacuum adsorption. Preferably, the surface of the profiling fixture 2132 is coated with a silica gel protective layer to avoid scratching the product to be tested.

[0059] Furthermore, the specific structures of the first rotating platform 211 and the second rotating platform 231 are roughly the same. The first rotating platform 211 is used as an example here: the first rotating platform 211 includes a mounting plate 2111, a first motor 2112, and a second motor 2113. Multiple second positioning fixtures 213 are installed on the mounting plate 2111 at intervals along the length direction of the mounting plate 2111. The first motor 2112 is used to drive the entire mounting plate 2111 to swing left and right (usually, its swing range is 270 degrees); the second motor 2113 is installed on the mounting plate 2111 and is used to drive the second positioning fixture 213 to rotate around its vertical axis, and its rotation angle is usually 360 degrees; here, it can be supplemented that the second motor 2113 is connected to a rotating shaft through a transmission wheel drive, and the rotating shaft drives multiple second positioning fixtures 213 in series; the second positioning fixture 213 is installed and connected to a "cross steering device" to achieve 360-degree rotation of the second positioning fixture 213. The "cross steering gear" is a prior art, and is also called a "high-precision cross steering gear" by people in this field. For example, Chinese patent CN218625366U and other documents also disclose a specific structure of a cross steering gear, which will not be described in detail here.

[0060] Furthermore, the unloading machine 30 includes an OK tray loading position 31, an NG tray loading position 32, an OK product receiving position 33, an NG product receiving position 34, a first unloading arm 35, a second unloading arm 36, an OK product buffer position 37, and an NG product buffer position 38.

[0061] Specifically: the OK tray loading position 31 and the NG tray loading position 32 are arranged on the unloader 30 along the left and right directions, and the OK product receiving position 33 and the NG product receiving position 34 are correspondingly arranged on the front side of the OK tray loading position 31 and the NG tray loading position 32; there is a first material receiving position 311 between the OK tray loading position 31 and the OK product receiving position 33, and there is a second material receiving position 321 between the NG tray loading position 32 and the NG product receiving position 34.

[0062] The loader 10 also includes a second movable platform for conveying OK trays and a third movable platform for conveying NG trays. The specific structures of the second and third movable platforms are basically the same as the structure and principle of the first movable platform 14, and are not further described here. The second movable platform conveys OK trays from the OK tray loading position 31 to the first receiving position 311 for collection. When the OK trays are fully loaded, they are conveyed to the OK product receiving position 33. The third movable platform conveys NG trays from the NG tray loading position 32 to the second receiving position 321 for collection. When the NG trays are fully loaded, they are conveyed to the NG product receiving position 34.

[0063] In actual application, a blanking position 39 is further provided on the blanking machine 30. The aforementioned third transfer mechanism 24 transports the measured samples that have completed the detection to the blanking position 39. The first blanking arm 35 classifies the measured samples at the blanking position 39 according to the feedback information of the detector and moves them to the OK product buffer position 37 and the NG product buffer position 38. The second blanking arm 36 transports the measured samples at the OK product buffer position 37 and the NG product buffer position 38 to the OK trays at the first receiving position 311 and the NG trays at the second receiving position 321 respectively.

[0064] Next, the working process of the present utility model will be briefly described:

[0065] Step 1: The first moving platform 14 of the loading machine 10 transports the tray at the full tray loading position 11 to the picking position 15. The loading arm 12 picks up the measured product on the tray at the first picking position 15 and places it on the first transfer platform 131 of the first transfer mechanism 13.

[0066] Step 2: The first handling arm 132 of the first transfer mechanism 13 moves the measured product on the first transfer platform 131 to the second positioning fixture 213 on the first rotating platform 211 at the first detection station 21.

[0067] Step 3: As described above, the second positioning fixture 213 is installed on the first rotating platform 211. The first rotating platform 211 drives the second positioning fixture 213 to perform a left - right swinging motion and a 360 - degree self - rotation motion of the second positioning fixture 213. The first detection camera 212 takes pictures of the measured product on the second positioning fixture 213 for detection and uploads the pictures to the main control system.

[0068] Step 4: The second transfer mechanism 22 transports the measured product on the second positioning fixture 213 to the third positioning fixture on the second rotating platform 231. The second rotating platform 231 drives the measured product on the third positioning fixture to swing and rotate. The second detection camera 232 takes pictures of the measured product on the second rotating platform 231 for detection and uploads the pictures to the main control system.

[0069] Step 5: In the blanking machine 30, the second moving platform transports the OK trays at the OK tray loading position 31 to the first receiving position 311, and the third moving platform transports the NG trays at the NG tray loading position 32 to the second receiving position 321.

[0070] Step 6: The third transfer mechanism 24 transports the measured samples on the second rotating platform 231 to the blanking position 39 of the blanking machine 30. The first blanking arm 35 classifies the measured samples at the blanking position 39 according to the feedback information of the main control system and places the measured samples in the corresponding OK product buffer position 37 and NG product buffer position 38.

[0071] Step 7: According to the feedback system of the main control system, the second blanking arm 36 correspondingly places the samples to be tested on the OK product buffer position 37 and the NG product buffer position 38 into the OK tray at the first receiving position 311 and the NG tray at the second receiving position 321.

[0072] Step 8: After the samples on the OK tray are full, the second moving platform transfers the OK tray at the first receiving position 311 to the OK product receiving position 33; after the samples on the NG tray are full, the third moving platform transfers the NG tray at the second receiving position 321 to the NG product receiving position 34.

[0073] The design focus of the present utility model is that there are two detection stations arranged back-to-back on the vision inspection machine, thereby ensuring the accuracy and reliability of product detection; secondly, by providing a rotating platform, it can cope with the arc surface detection of existing products such as watch cases and the outer shells of earphone charging bins, and the vision inspection machine of the present application has the advantage of higher detection efficiency compared with the existing vision inspection machine.

[0074] The above are only the preferred embodiments of the present utility model, and do not impose any limitation on the technical scope of the present utility model. Therefore, any minor modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. A visual inspection machine, characterized in that: The system comprises a first inspection station, a second transfer mechanism, and a second inspection station; the first inspection station and the second inspection station are arranged in back-to-back relation, the second transfer mechanism is arranged between the first inspection station and the second inspection station, and the second transfer mechanism is used to move the product to be inspected at the first inspection station to the second inspection station; The first inspection station includes a first rotating platform and a first inspection camera, and the first rotating platform is provided with a plurality of second positioning fixtures for positioning the product to be inspected; The second inspection station includes a second rotating platform and a second inspection camera. The second rotating platform is provided with a plurality of third positioning fixtures for positioning the product to be inspected.

2. A visual inspection machine according to claim 1, characterized in that: The second positioning fixture and the third positioning fixture are provided with vacuum adsorption air channels for adsorbing the product to be tested.

3. A visual inspection machine according to claim 1, characterized in that: The second positioning jig includes a positioning block and a profiling jig. The profiling jig is mounted on the first rotating platform through the positioning block. The profiling jig is made of Teflon.

4. A visual inspection machine according to claim 3, characterized in that: At least a portion of the surface of the profiling jig is covered with a silicone protective layer.

5. A visual inspection machine according to claim 4, characterized in that: The first rotating platform includes a mounting plate, a first motor, and a second motor. A plurality of second positioning fixtures are installed on the mounting plate at intervals along the length direction of the mounting plate. The first motor is used to drive the entire mounting plate to swing left and right; the second motor is installed on the mounting plate and is used to drive the second positioning fixture to rotate around its vertical axis.

6. A visual inspection machine according to claim 5, characterized in that: The second positioning fixture is installed and connected with a cross steering device, and the second motor is driven and connected with a rotating shaft adapted to the cross steering device.

7. A visual inspection machine according to claim 6, characterized in that: The system further includes a third transfer mechanism, which is used to move the product to be tested on the second rotating platform to the next station.

Images