Sheet bonding position test apparatus and sheet bonding position test method

Abstract

The present application relates to a sheet bonding position test device and a sheet bonding position test method, comprising a product positioning mechanism and a position detection mechanism, the product positioning mechanism comprising a jig device and a first mounting bracket device, the jig device being used for carrying and positioning the measured product and making the second sheet surface of the measured product face upward, the first mounting bracket device being used for mounting the jig device, the position detection mechanism comprising a distance measuring device, a visual detection device and a second mounting bracket device, the distance measuring device being arranged above the measured product and being used for measuring the distance between the second sheet surface of the measured product, and the visual detection device being arranged above the measured product and being used for collecting the image of the second sheet surface of the measured product. Through the detection of the position after the sheet bonding, when the glue layer thickness is not uniform due to the rheology of the glue, the unqualified products can be checked out in time and prevented from flowing into the market.

Description

Technical Field

[0001] This invention relates to the field of sheet bonding technology, and in particular to a sheet bonding posture testing device and a sheet bonding posture testing method. Background Technology

[0002] During product assembly, sometimes it is necessary to bond sheets to a carrier. The carrier and the sheet are bonded together with an adhesive, which cures to form an adhesive layer.

[0003] Patent CN111770883B discloses a sheet bonding device EA that prevents the sheet bonding ability from decreasing. It bonds an adhesive sheet AS to a substrate WK and includes: a supply mechanism 10 that supplies the adhesive sheet AS; a holding mechanism 20 that holds the adhesive sheet AS supplied by the supply mechanism 10 via a holding surface 21A of a holding member 21; a pressing mechanism 30 that moves the holding mechanism 20 holding the adhesive sheet AS and presses the adhesive sheet AS onto the bonding surface WK1 of the substrate WK for bonding; and a substrate orientation detection mechanism. The measuring mechanism 40 detects at least one of the direction of the adhesive surface WK1 of the object WK moving relative to the adhesive bonding device EA, and the position of the adhesive surface WK1. Based on the detection results of the adhesive surface posture detection mechanism 40, the pressing mechanism 30 causes the holding member 21 to move along with the object WK moving relative to the adhesive bonding device EA, so that the holding surface 21A can be oriented in a predetermined direction relative to the adhesive surface WK1 and the adhesive sheet AS can be pressed, and the holding surface 21A can be positioned in a predetermined position relative to the adhesive surface WK1 and the adhesive sheet AS can be pressed. In the above patent, the posture of the adhesive surface of the object is detected to facilitate accurate bonding of the adhesive sheet to the adhesive surface of the object. Since the adhesive sheet and the object are accurately positioned during the bonding process, posture detection of the adhesive sheet is no longer performed after product assembly. However, in actual bonding, due to the fluidity of the adhesive, uneven adhesive layer thickness may occur, leading to deviations in the posture and position of the bonded sheet, affecting the normal use of the product. No one in the current technology has thought of performing pose detection on the bonded sheet. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to detect the position of the bonded sheet to avoid affecting the normal use of the product.

[0005] To solve the above technical problems, the present invention provides a sheet bonding posture testing device. The product under test includes a carrier and a sheet. The carrier has a first carrier surface, a second carrier surface, and a third carrier surface. The first carrier surface and the second carrier surface are disposed opposite to each other. The third carrier surface is connected between the first carrier surface and the second carrier surface, and the connection point forms an outwardly convex angle. The sheet has a first sheet surface and a second sheet surface. The first sheet surface and the second sheet surface are disposed opposite to each other. The first sheet surface faces the first carrier surface, and an adhesive layer is provided in the gap between the two surfaces to bond and fix the first carrier surface and the first sheet surface. The sheet bonding posture testing device includes:

[0006] The product positioning mechanism includes a fixture device and a first mounting bracket device. The fixture device is used to support and position the carrier of the product under test and to make the second sheet surface of the product under test face upward. The first mounting bracket device is used to mount the fixture device.

[0007] The pose detection mechanism includes a distance measuring device, a vision detection device, and a second mounting bracket device. The distance measuring device is located above the second sheet surface of the product under test and is used to measure the distance between the distance measuring device and the second sheet surface of the product under test. The vision detection device is located above the second sheet surface of the product under test and is used to acquire images of the second sheet surface of the product under test.

[0008] In one embodiment of the present invention, the ranging device is a laser ranging device.

[0009] In one embodiment of the present invention, the visual inspection device is a CCD visual inspection device.

[0010] In one embodiment of the present invention, the fixture device includes an adsorption stage and a plurality of limiting components. The adsorption stage is used to carry the product under test and adsorb the second carrier surface of the product under test. The plurality of limiting components are located outside the third carrier surface of the product under test.

[0011] In one embodiment of the present invention, the plurality of limiting components include a fixed stop block that is fixedly disposed and a movable limiting roller that can be released and rolled to contact the outer side of the carrier pressing against the product under test.

[0012] In one embodiment of the present invention, the product positioning mechanism further includes a rotating device and a first translation device. The rotating device is connected to the fixture device and drives the fixture device to rotate about the vertical direction. The first translation device drives the rotating device to translate along the horizontal X-axis direction.

[0013] In one embodiment of the present invention, the pose detection mechanism further includes a first lifting device, a second lifting device, and a second translation device. The first lifting device is used to drive the ranging device to move up and down in the vertical direction, the second lifting device is used to drive the visual detection device to move up and down in the vertical direction, and the second translation device is used to drive the first lifting device and the second lifting device to translate in the horizontal Y-axis direction.

[0014] In one embodiment of the present invention, the first mounting bracket device is a workbench, and the second mounting bracket device is a vertical frame.

[0015] In one embodiment of the present invention, the carrier is a shell and the sheet is a metal sheet.

[0016] This invention also provides a method for testing the bonding posture of sheet materials. The product under test includes a carrier and a sheet material. The carrier has a first carrier surface, a second carrier surface, and a third carrier surface. The first carrier surface and the second carrier surface are disposed opposite to each other. The third carrier surface is connected between the first carrier surface and the second carrier surface, and the connection point forms an outwardly convex angle. The sheet material has a first sheet surface and a second sheet surface. The first sheet surface and the second sheet surface are disposed opposite to each other. The first sheet surface faces the first carrier surface, and an adhesive layer is provided in the gap between the two surfaces to bond and fix the first carrier surface and the first sheet surface. The method for testing the bonding posture of sheet materials includes the following steps:

[0017] S1. Provide the sheet bonding posture testing equipment;

[0018] S2. Position the product to be tested using the fixture device and make the second sheet surface of the product to be tested face upward;

[0019] S3. Obtain multiple distance values ​​between different positions on the surface of the second sheet of the product being tested using the ranging device, and determine whether the multiple distance values ​​are all within the set range. If yes, the distance test is qualified; otherwise, the distance test is unqualified.

[0020] S4. Obtain an image of the second sheet surface of the product under test through the vision inspection device, and determine whether the image of the second sheet surface is within the set area. If yes, the image inspection is qualified; otherwise, the image inspection is unqualified.

[0021] S5. Determine whether the distance detection and image detection are both qualified. If yes, the sheet bonding pose test is qualified; otherwise, the sheet bonding pose test is unqualified.

[0022] Step S2 is executed after step S1, steps S3 and S4 are executed after step S2 without any order, and step S5 is executed after steps S3 and S4.

[0023] The technical solution of the present invention has the following advantages compared with the prior art:

[0024] 1) The sheet bonding posture testing equipment and sheet bonding posture testing method described in this invention can detect the posture of the bonded sheet in a timely manner when the thickness of the adhesive layer is uneven due to rheology, thus preventing unqualified products from entering the market.

[0025] 2) The sheet bonding posture testing equipment and method described in this invention detect the state of the bonded sheet through laser ranging and visual inspection, which is accurate and reliable. Attached Figure Description

[0026] To make the content of this invention easier to understand, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0027] Figure 1 This is a schematic diagram of the product under test provided by the present invention;

[0028] Figure 2 A schematic diagram of the sheet bonding posture testing device provided by the present invention;

[0029] Figure 3 A schematic diagram of the fixture device provided by the present invention from one angle;

[0030] Figure 4 This is a schematic diagram of the fixture device provided by the present invention from another angle;

[0031] Figure 5 This is a schematic diagram of one angle of the pose detection mechanism provided by the present invention;

[0032] Figure 6 This is a schematic diagram of the pose detection mechanism provided by the present invention from another angle.

[0033] Explanation of reference numerals on the accompanying drawings:

[0034] 11. Carrier; 12. Sheet; 13. First carrier surface; 14. Second carrier surface; 15. Third carrier surface; 16. First sheet surface; 17. Second sheet surface; 18. Adhesive layer; 21. Fixture device; 211. Adsorption platform; 212. Fixed block; 213. Movable limiting roller; 22. First mounting bracket device; 23. Rotation device; 24. First translation device; 31. Distance measuring device; 32. Visual inspection device; 33. Second mounting bracket device; 34. First lifting device; 35. Second lifting device; 36. Second translation device. Detailed Implementation

[0035] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments described are not intended to limit the present invention.

[0036] Example 1

[0037] See Figures 1 to 6 As shown, a sheet bonding posture testing device is disclosed. The product under test includes a carrier 11 and a sheet 12. The carrier 11 has a first carrier surface 13, a second carrier surface 14, and a third carrier surface 15. The first carrier surface 13 and the second carrier surface 14 are disposed opposite to each other. The third carrier surface 15 is connected between the first carrier surface 13 and the second carrier surface 14, and the connection point forms an outwardly convex angle. The sheet 12 has a first sheet surface 16 and a second sheet surface 17. The first sheet surface 16 and the second sheet surface 17 are disposed opposite to each other. The first sheet surface 16 faces the first carrier surface 13, and an adhesive layer 18 is provided in the gap between the two surfaces to bond and fix the first carrier surface 13 and the first sheet surface 16. The sheet bonding posture testing device includes:

[0038] The product positioning mechanism includes a fixture device 21 and a first mounting bracket device 22. The fixture device 21 is used to support and position the carrier of the product under test and to make the second sheet surface 17 of the product under test face upward. The first mounting bracket device 22 is used to mount the fixture device.

[0039] The pose detection mechanism includes a distance measuring device 31, a vision detection device 32, and a second mounting bracket device 33. The distance measuring device 31 is disposed above the second sheet surface 17 of the product under test and is used to measure the distance between the distance measuring device 31 and the second sheet surface 17 of the product under test. The vision detection device 32 is disposed above the second sheet surface 17 of the product under test and is used to acquire images of the second sheet surface 17 of the product under test.

[0040] Generally, if the carrier is a plate-like structure, the first and second carrier surfaces are the front and back sides of the carrier, respectively, and are perpendicular to the thickness direction of the carrier; the third carrier surface is the side of the carrier. Alternatively, the first sheet surface is the front side of the sheet and is perpendicular to the thickness direction of the sheet; the second sheet surface is the side of the sheet.

[0041] The distance measuring device detects the distance between itself and the second sheet surface of the product being tested to determine whether the second sheet surface of the product being tested is at a set height. The image detection device takes a picture of the second sheet surface of the product being tested and determines the position of the product being tested in the picture to determine whether the second sheet surface of the product being tested is within a set area.

[0042] The testing method of the above-mentioned sheet bonding posture testing equipment includes the following steps:

[0043] The first step is to position the product to be tested using the aforementioned fixture device 21 and make the second sheet surface 17 of the product to be tested face upwards.

[0044] The second step involves acquiring multiple distance values ​​between the measuring device 31 and different positions on the surface 17 of the second sheet of the product being tested, and determining whether these multiple distance values ​​are all within the set range. If so, the distance test is qualified; otherwise, the distance test is unqualified.

[0045] The third step is to acquire an image of the second sheet surface 17 of the product under test through the aforementioned visual inspection device 32, and determine whether the image of the second sheet surface is within the set area. If it is, the image inspection is qualified; otherwise, the image inspection is unqualified.

[0046] The fourth step is to determine whether the distance detection and image detection are both qualified. If so, the sheet bonding pose test is qualified; otherwise, the sheet bonding pose test is unqualified.

[0047] The second and third steps are performed in any order and follow the first step, while the fourth step follows the second and third steps.

[0048] In the above steps, in the second step, the Z-axis coordinates of at least two positions on the surface of the second sheet of the product under test are obtained, and it is determined whether the Z-axis coordinates of at least two positions are within the set position. If so, the distance test is qualified; otherwise, the distance test is unqualified. In the third step, the X-axis coordinates and / or Y-axis coordinates of at least one edge on the surface of the second sheet of the product under test are obtained, and it is determined whether the X-axis coordinates and / or Y-axis coordinates of at least two positions are within the set position. If so, the image detection is qualified; otherwise, the image detection is unqualified.

[0049] In the above steps, the image test can be performed after the distance test is passed, or the distance test can be performed after the image test is passed, or the distance test and image test can be performed simultaneously. Specifically, the height of the second sheet surface of the tested product can be measured and judged first to see if it is qualified. If the height of the second sheet surface is qualified, the area of ​​the second sheet surface of the tested product can be measured and judged to see if it is qualified. Alternatively, the area of ​​the second sheet surface of the tested product can be measured and judged first to see if it is qualified. If the area of ​​the second sheet surface is qualified, the height of the second sheet surface of the tested product can be measured and judged to see if it is qualified. Steps two and three can also be performed simultaneously. When the fourth step is judged by a computer program, different alarms can be issued for qualified and unqualified test results. At this time, the above sheet bonding test equipment also includes related alarm devices. By detecting the posture of the bonded sheets, when the adhesive layer thickness is uneven due to rheology, it can be detected in time, preventing unqualified products from entering the market.

[0050] In this preferred embodiment, the ranging device 31 is a laser ranging device. Laser ranging is an instrument that uses a laser to accurately measure the distance to a target (also known as laser distance measurement). When working, the laser rangefinder emits a very thin laser beam towards the target. A photoelectric element receives the laser beam reflected from the target, and a timer measures the time from emission to reception to calculate the distance from the observer to the target. Due to the good monochromaticity and strong directionality of laser light, coupled with the semiconductor integration of electronic circuitry, laser rangefinders, compared to photoelectric rangefinders, can operate day and night and offer improved ranging accuracy.

[0051] In this preferred embodiment, the aforementioned visual inspection device 32 is a CCD visual inspection device. A CCD visual inspection device uses a machine to replace the human eye for measurement and judgment. The working principle of CCD visual inspection is as follows: the CCD image acquisition device converts the captured object into an image signal, which is then sent to a dedicated image processing system. Based on pixel distribution, brightness, color, and other information, it converts the signal into a digital signal. The image system performs various operations on these signals to extract the target's features (e.g., area, quantity, position, length), and then, based on preset allowable ranges and other conditions, including size, angle, quantity, surface conformity / non-conformity, presence / absence, etc., it achieves automatic identification. The system then controls the operation of the equipment on-site based on the judgment result. This is a valuable mechanism for production, assembly, or packaging. It has immeasurable value in detecting defects and preventing defective products from being delivered to consumers.

[0052] The state of the bonded sheets is detected by laser ranging and visual inspection, which is accurate and reliable.

[0053] In a preferred embodiment of this invention, the fixture device 21 includes an adsorption stage 211 and a plurality of limiting components. The adsorption stage 211 is used to carry the product to be tested and adsorb the second carrier surface 14 of the product to be tested. The plurality of limiting components are located outside the third carrier surface 15 of the product to be tested.

[0054] The adsorption stage fixes the product under test by vacuum adsorption, which will not cause wear and scratches to the product under test. Specifically, the aforementioned adsorption stage 211 includes a carrier plate and suction cups uniformly installed on the carrier plate.

[0055] In this preferred embodiment, the plurality of limiting components include fixed stops 212 and movable limiting rollers 213 that can be released and roll to contact the outer side of the carrier pressing against the product under test. The movable limiting rollers, by rolling to contact the product under test, reduce friction and minimize wear and scratches. The fixed stops and movable limiting rollers surround the adsorption platform. The fixed stops are fixed relative to the platform, while the movable limiting rollers are movable relative to the platform and are driven by a small cylinder.

[0056] In a preferred embodiment of this invention, the product positioning mechanism further includes a rotating device 23 and a first translation device 24. The rotating device 23 is connected to the fixture device 21 and drives the fixture device 21 to rotate vertically. The first translation device 24 drives the rotating device 23 to translate along the horizontal X-axis. Multiple sheets are typically bonded to the carrier. By rotating the fixture device, different sheets can be rotated to a position below the ranging device and the visual inspection device. The ranging device and the visual inspection device can then detect the bonding posture of the sheets at the inspection station. By providing the first translation device, the fixture device can also be translated. When the fixture device is translated to the loading station, it is vertically offset from the posture detection mechanism. At this point, the product to be tested can be placed on the fixture device, or the product to be tested can be removed from the fixture device. The fixture device is moved to the inspection station. At this time, the fixture device is located below the ranging device and the visual inspection device. After the fixture device reaches the inspection station, it drives different sheets to the bottom of the ranging device and the visual inspection device through the rotating device. Specifically, the rotating device is a motor and the first translation device is a linear module.

[0057] In a preferred embodiment of this example, the pose detection mechanism further includes a first lifting device 34, a second lifting device 35, and a second translation device 36. The first lifting device 34 drives the ranging device 31 to move up and down vertically, the second lifting device 35 drives the vision detection device 32 to move up and down vertically, and the second translation device 36 drives the first lifting device 34 and the second lifting device 35 to translate along the horizontal Y-axis. By providing the first and second lifting devices, the ranging device and the vision detection device can be raised and lowered, thus adapting to products of different heights. By providing the second translation device, the positions of the ranging device and the vision detection device can be adjusted.

[0058] In this preferred embodiment, the first mounting bracket device 22 is a workbench, and the second mounting bracket device 33 is a vertical frame.

[0059] In this preferred embodiment, the carrier 11 is a shell, and the sheet 12 is a metal sheet. The side of the carrier 11 is bent upward to form a bent edge, the side of the carrier sheet 12 abuts against the inner side of the bent edge, and the limiting member abuts against the outer side of the bent edge.

[0060] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A sheet bonding posture testing device, wherein the product under test includes a carrier and a sheet, the carrier having a first carrier surface, a second carrier surface, and a third carrier surface, the first carrier surface and the second carrier surface being disposed opposite to each other, the third carrier surface being connected between the first carrier surface and the second carrier surface and forming an outwardly convex angle at the connection point, the sheet having a first sheet surface and a second sheet surface, the first sheet surface and the second sheet surface being disposed opposite to each other, the first sheet surface facing the first carrier surface, and an adhesive layer for bonding and fixing the first carrier surface and the first sheet surface being disposed in the gap between the two, characterized in that, The sheet bonding posture testing equipment includes: The product positioning mechanism includes a fixture device and a first mounting bracket device. The fixture device is used to support and position the carrier of the product under test and to make the second sheet surface of the product under test face upward. The first mounting bracket device is used to mount the fixture device. The pose detection mechanism includes a distance measuring device, a vision detection device, and a second mounting bracket device. The distance measuring device is located above the second sheet surface of the product being tested and is used to measure the distance between the distance measuring device and the second sheet surface of the product being tested. The vision detection device is located above the second sheet surface of the product being tested and is used to acquire images of the second sheet surface of the product being tested. The product positioning mechanism further includes a rotating device and a first translation device. The rotating device is connected to the fixture device and drives the fixture device to rotate around the vertical direction. The first translation device drives the rotating device to translate along the horizontal X-axis direction. The pose detection mechanism further includes a first lifting device, a second lifting device, and a second translation device. The first lifting device is used to drive the ranging device to move up and down in the vertical direction, the second lifting device is used to drive the visual detection device to move up and down in the vertical direction, and the second translation device is used to drive the first lifting device and the second lifting device to translate in the horizontal Y-axis direction.

2. The sheet bonding posture testing device according to claim 1, characterized in that, The ranging device is a laser ranging device.

3. The sheet bonding posture testing device according to claim 1, characterized in that, The visual inspection device is a CCD visual inspection device.

4. The sheet bonding posture testing device according to claim 1, characterized in that, The fixture device includes an adsorption stage and multiple limiting components. The adsorption stage is used to support the product to be tested and adsorb the second carrier surface of the product to be tested. The multiple limiting components are located outside the third carrier surface of the product to be tested.

5. The sheet bonding posture testing device according to claim 4, characterized in that, The plurality of limiting components include a fixed stop block that is fixedly installed and a movable limiting roller that can be released and rolled to contact the outer side of the carrier that presses against the product being tested.

6. The sheet bonding posture testing device according to claim 1, characterized in that, The first mounting bracket device is a workbench, and the second mounting bracket device is a vertical frame.

7. The sheet bonding posture testing device according to claim 1, characterized in that, The carrier is a shell, and the sheet is a metal sheet.

8. A method for testing the bonding posture of sheet materials, wherein the product under test includes a carrier and a sheet material, the carrier having a first carrier surface, a second carrier surface, and a third carrier surface, the first carrier surface and the second carrier surface being disposed opposite to each other, the third carrier surface being connected between the first carrier surface and the second carrier surface and forming an outwardly convex angle at the connection point, the sheet material having a first sheet surface and a second sheet surface, the first sheet surface and the second sheet surface being disposed opposite to each other, the first sheet surface facing the first carrier surface, and an adhesive layer for bonding and fixing the first carrier surface and the first sheet surface being disposed in the gap between the two, characterized in that... The sheet bonding posture testing method includes the following steps: S1. Provide a sheet bonding posture testing device as described in any one of claims 1 to 7; S2. Position the product to be tested using the fixture device and make the second sheet surface of the product to be tested face upward; S3. Obtain multiple distance values ​​between different positions on the surface of the second sheet of the product being tested using the ranging device, and determine whether the multiple distance values ​​are all within the set range. If yes, the distance test is qualified; otherwise, the distance test is unqualified. S4. Obtain an image of the second sheet surface of the product under test through the vision inspection device, and determine whether the image of the second sheet surface is within the set area. If yes, the image inspection is qualified; otherwise, the image inspection is unqualified. S5. Determine whether the distance detection and image detection are both qualified. If yes, the sheet bonding pose test is qualified; otherwise, the sheet bonding pose test is unqualified. Step S2 is executed after step S1, steps S3 and S4 are executed after step S2 without any order, and step S5 is executed after steps S3 and S4.

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