Horizontal optical inspection equipment

Abstract

The utility model discloses a horizontal optical inspection device, comprising an image acquisition device, the main optical axis of the image acquisition device is consistent with the horizontal direction, and the image acquisition device is used for shooting an image so as to obtain measurement data; the three-axis movement mechanism has three opposite movement directions of front and back, left and right and up and down, and the three-axis movement mechanism is connected with the image acquisition equipment and drives the image acquisition equipment to translate; and the product rotating seat is used for fixing the product to be parallel to the main optical axis of the image acquisition equipment and driving the product to rotate. The problem that an existing device cannot detect the side face of a product is solved.

Description

Technical Field

[0001] The present application relates to an inspection device, in particular to a horizontal optical inspection device. Background Art

[0002] The 3C product assembly system has strict requirements for product dimensions. Existing inspection methods typically use electronic magnifying glasses and measuring equipment to inspect vertically from a bird's-eye view. This inspection method often leaves gaps between some product components after assembly, often on the sides. This approach makes it difficult to effectively measure these gaps from a bird's-eye view. Utility Model Content

[0003] The utility model discloses a horizontal optical inspection device, which solves the problem that the existing device cannot detect the side surface of the product.

[0004] A horizontal optical inspection device comprising:

[0005] An image acquisition device, wherein the main optical axis of the image acquisition device is aligned with the horizontal direction, and is used to capture images to obtain measurement data;

[0006] A three-axis motion mechanism having three relative motion directions: front-back, left-right, and up-down, and the three-axis motion mechanism is connected to and drives the image acquisition device to move in translation;

[0007] The product rotating seat is used to fix the product parallel to the main optical axis of the image acquisition device and drive the product to rotate.

[0008] In this application, the main optical axis of the image acquisition device is consistent with the horizontal direction, and is used to measure the vertical value of the product, and cooperates with the three-axis motion mechanism to realize the adjustment of the height and distance between the image acquisition device and the product, which is conducive to adjusting the distance between the image acquisition device and the product, so that the image acquisition device can obtain clearer photos; at the same time, the product is fixed with a product rotating seat, so that the product can rotate by itself, so as to directly detect all sides of the product, avoiding the inconvenience caused by multiple disassembly and adjustment of the position of the product and the image acquisition device during inspection.

[0009] Several optional methods are also provided below, but they are not intended to be additional limitations on the above-mentioned overall solution. They are merely further supplements or optimizations. Under the premise that there are no technical or logical contradictions, each optional method can be combined separately for the above-mentioned overall solution, or multiple optional methods can be combined.

[0010] Optionally, the inspection device further comprises a base and a product placement platform, the product placement platform and the three-axis motion mechanism are both arranged on the base; the product placement platform is used to carry products and the product rotating seat, and has a certain height, so that the main optical axis of the image acquisition device is at the same height as the product at least when the three-axis motion mechanism moves to the lowest point.

[0011] Optionally, the product rotating seat comprises a base, a motor, a speed reducer, and a fixed seat, the base is connected to the product placement platform, the motor and the speed reducer are both arranged on the base, the first rotating end of the speed reducer is connected to the motor, and the second rotating end of the speed reducer is connected to the fixed seat.

[0012] Optionally, it further comprises a code scanner and a code scanner support for fixing the code scanner, the code scanner support is connected to the base, and the code scanner is arranged above the product rotating seat through the code scanner support.

[0013] Optionally, the three-axis motion mechanism is arranged on one side of the product placement platform, and the code scanner support is arranged on the other side of the product placement platform.

[0014] Optionally, the three-axis motion mechanism comprises a first translation mechanism, a second translation mechanism, and a third translation mechanism, the first translation mechanism has a motion direction of left-right motion relative to the product placement platform, the second translation mechanism has a motion direction of forward-backward motion relative to the product placement platform, and the third translation mechanism has a motion direction of up-down motion relative to the product placement platform.

[0015] Optionally, the first translation mechanism, the second translation mechanism, and the third translation mechanism all have opposite fixed parts and movable parts, the fixed part of the first translation mechanism is connected to the base and arranged parallel to the product placement platform, the fixed part of the second translation mechanism is connected to the movable part of the first translation mechanism, and the fixed part of the third translation mechanism is connected to the movable part of the second translation mechanism.

[0016] Optionally, the inspection device further comprises a shade, the shade is arranged on the base and used to partially shield external light that interferes with the image acquisition device.

[0017] Optionally, part of the shade is arranged on the top of the image acquisition device, and the remaining part is arranged along the circumference of the image acquisition device, forming a semi-closed structure with three closed sides and one open side.

[0018] The beneficial effects of the present application are as follows:

[0019] 1. In this application, a three-axis motion mechanism is used to horizontally fix the image acquisition device to detect the side of the product, solving the difficulty of detecting the side gap of the product that traditional detection methods cannot detect;

[0020] 2. In this application, a product rotating seat is provided to fix the product and enable the product to rotate, thereby avoiding the problem of repeated disassembly and adjustment of the position of the product and improving convenience;

[0021] 3. In this application, a product placement platform is set up, and the height of the product placement platform is higher than the height of the main optical axis when the image acquisition device moves to the lowest point, so as to ensure the full applicability of this inspection equipment when detecting products of different heights. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a structural diagram of an embodiment of the present application;

[0023] Figure 2 This is a schematic diagram of a partial structure of an embodiment of the present application;

[0024] Figure 3 This is a schematic diagram of a partial structure of an embodiment of the present application;

[0025] Figure 4 This is an exploded view of the product rotating seat in one embodiment of the present application.

[0026] The reference numerals in the figures are described as follows:

[0027] 1. Image acquisition device; 2. Three-axis motion mechanism; 21. First translation mechanism; 22. Second translation mechanism; 23. Third translation mechanism; 3. Product rotation seat; 31. Base; 32. Motor; 33. Reducer; 34. Fixed seat; 4. Base; 5. Product placement platform; 6. Barcode scanner; 7. Barcode scanner bracket; 8. Mask; 81. Light source. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0029] It should be noted that when a component is referred to as being "connected" to another component, it may be directly connected to the other component or there may be an intermediate component. When a component is referred to as being "disposed on" another component, it may be directly disposed on the other component or there may be an intermediate component.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0031] Reference Figure 1 With Figure 2 In an embodiment of the application, a horizontal optical inspection device is disclosed, comprising an image acquisition device 1, a three-axis motion mechanism 2, and a product rotating seat 3.

[0032] The image acquisition device 1 is connected to the three-axis motion mechanism 2, and the image acquisition device is driven to translate by the three-axis motion mechanism 2. The image acquisition device 1 has the translation directions of front and back, left and right, and up and down relative to the product rotating seat 3.

[0033] In addition, the main optical axis of the image acquisition device 1 is consistent with the horizontal direction and is arranged towards the side of the product, for acquiring the image of the side of the product to obtain the measurement data.

[0034] Further, the product is placed and fixed on the product rotating seat 3, and the product rotating seat 3 can drive the product to rotate horizontally. The image acquisition device 1 can acquire the image of the whole circumference of the product by rotation without disassembly.

[0035] It should be noted that the application is generally used for the quality inspection of 3C products, especially for the detection before the assembly of the mobile phone glass panel. It should be noted that the mobile phone glass panel usually has a metal spring sheet, and the metal spring sheet has elasticity and is difficult to obtain accurate data by contacting measurement with a probe in the traditional overhead direction. Compared with the detection method in the traditional overhead direction, the application can obtain the length and width data of the product by acquiring the side photo of the product, instead of the traditional overhead detection method. In addition, the application can also obtain the height information of the side of the product, expand the amount of information obtained by detection, and reduce the probability of over-inspection of defective products.

[0036] To improve the applicability of the inspection device, in an embodiment of the application, the inspection device further comprises a base 4 and a product placement platform 5. The base 4 is used to provide a unified installation plane for the product placement platform 5 and the three-axis motion mechanism 2, so that the two are at a relatively consistent height.

[0037] Further, the product placement platform 5 has a certain height, which is used to carry the product rotating seat 3. When the image acquisition device 1 moves to the lowest point with the three-axis motion mechanism 2, it can ensure that the product located on the product rotating seat 3 is not lower than the height of the main optical axis of the image acquisition device 1. Thus, the inspection device is fully applicable when detecting products of different heights.

[0038] refer to Figure 4 In order to enable the product rotating seat 3 to rotate, in some embodiments, the product rotating seat 3 includes a rotatably connected base 31 and a fixed seat 34. The base 31 is connected to the product placement platform 5, and the fixed seat 34 is used to place the product.

[0039] Furthermore, the relative rotation between the base 31 and the fixing base 34 is driven by the motor 32 to achieve controllable and uniform rotation.

[0040] Furthermore, the motor 32 is connected to a reducer 33 , which drives the fixing base 34 to transmit the power, thereby making the rotation of the fixing base 34 more stable.

[0041] In some embodiments, the motor 32 may also be connected to the fixing base 34 via a worm gear.

[0042] The specific connection method of the product rotating base 3 is as follows: the base 31 is connected to the product placement platform 5, the motor 32 and the reducer 33 are both located on the base 31, the first rotating end of the reducer 33 is connected to the motor 32, and the second rotating end of the reducer 33 is connected to the fixed base 34.

[0043] refer to Figure 2 To improve the level of automation, a barcode scanner 6 is installed above the product rotating base 3. This barcode scanner 6 is connected and fixed via a barcode scanner bracket 7, facing one side of the product rotating base 3. By encoding each product of different specifications and models and correlating the code with the position of the image acquisition device 1 on the three-axis motion mechanism 2, the barcode scanner 6 can automatically adjust the position of the image acquisition device 1 and the product after recognizing the code.

[0044] Furthermore, in order to prevent the scanner bracket 7 from interfering with the movement of the three-axis motion mechanism 2 and to prevent the image acquisition device 1 from photographing the scanner bracket 7, the three-axis motion mechanism 2 is arranged on one side of the product placement platform 5, and the scanner bracket 7 is arranged on the other side of the product placement platform 5, and the two are arranged adjacent to each other.

[0045] refer to Figure 2 and Figure 3 In some embodiments, the three-axis motion mechanism 2 includes a first translation mechanism 21, a second translation mechanism 22, and a third translation mechanism 23. The first translation mechanism 21 has a left-right motion relative to the product placement platform 5, the second translation mechanism 22 has a front-back motion relative to the product placement platform 5, and the third translation mechanism 23 has an up-and-down motion relative to the product placement platform 5, thereby driving the image acquisition device 1 to move closer to or further away from the product.

[0046] Furthermore, the first translation mechanism 21, the second translation mechanism 22, and the third translation mechanism 23 all have relative fixed parts and movable parts. The fixed part of the first translation mechanism 21 is connected to the base 4 and is arranged parallel to the product placement platform 5, the fixed part of the second translation mechanism 22 is connected to the movable part of the first translation mechanism 21, and the fixed part of the third translation mechanism 23 is connected to the movable part of the second translation mechanism 22.

[0047] In order to reduce the interference of external light sources on the detection results, the inspection device further includes a mask 8 , which is located on the base 4 and is used to partially shield the external light that interferes with the image acquisition device 1 .

[0048] Among them, part of the mask 8 is arranged at the top of the image acquisition device 1 to block the external light from the top; the remaining part is arranged along the circumference of the image acquisition device 1, forming a semi-closed structure with three sides closed and one side open around the image acquisition device 1, thereby partially blocking the external light in the circumferential direction.

[0049] Furthermore, a light source 81 is provided on the inner side of the mask 8. In order to ensure that the light source 81 irradiates the product with uniform light and reduce detection errors, the light source 81 can be a strip or ribbon-shaped light source.

[0050] In one embodiment of the present application, a method for inspecting a product using the horizontal optical inspection equipment in the above embodiment is also disclosed, including: using a barcode scanner to capture the product and identify the model of the product; after identifying the model, obtaining the inspection position of the product based on the product model; program-controlled motor automatic movement and rotation so that the image acquisition device (camera) reaches the optimal inspection position and automatically focuses on the product to achieve automatic program retrieval and automatic inspection.

[0051] The specific steps are as follows:

[0052] 1. Machine calibration

[0053] Send the standard parts to the testing room, use the standard machine to detect the required dimensions, record the inspection data, and simultaneously record the inspection position;

[0054] Place the standard part in the equipment and start inspection. Compare the inspected data with the data inspected by the standard machine. If the inspection data is inconsistent, the equipment needs to be compensated. The compensation method can be point correction and data correction.

[0055] 2. Program settings

[0056] Place the standard part into the device, create a new program, adjust the camera position and focal length, and perform origin calibration according to the initial point measured by OMM, named P0;

[0057] Program the required inspection points based on the inspection location (by adjusting the camera position, camera focal length, and product position). If multiple points need to be measured, record them in sequence as P1, P2, P3, and so on, until the required measurement points are confirmed and the inspection program is saved.

[0058] Retrieve the inspection program, inspect and debug the equipment to ensure the normal operation of the program.

[0059] The technical features of the above-described embodiments may be combined in any manner. To simplify the description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as no contradiction exists between these combinations of technical features, they should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be deemed that the drawing also discloses examples of combinations of the various embodiments involved.

[0060] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present application, and such modifications and improvements are all within the scope of protection of the present application.

Claims

1. A horizontal optical inspection device, characterized in that: include: An image acquisition device (1), wherein the main optical axis of the image acquisition device (1) is consistent with the horizontal direction, and is used for capturing images to obtain measurement data; A three-axis motion mechanism (2) having three relative motion directions: front-back, left-right, and up-down, wherein the three-axis motion mechanism (2) is connected to and drives the image acquisition device to move in translation; The product rotating seat (3) is used to fix the product parallel to the main optical axis of the image acquisition device (1) and drive the product to rotate.

2. A horizontal optical inspection device according to claim 1, characterized in that: The inspection device further comprises a base (4) and a product placement platform (5), wherein the product placement platform (5) and the three-axis motion mechanism (2) are both arranged on the base (4); the product placement platform (5) is used to carry the product and the product rotating seat (3), and has a certain height so that the main optical axis of the image acquisition device (1) is at the same height as the product at least when the image acquisition device (1) moves to the lowest point along with the three-axis motion mechanism (2).

3. A horizontal optical inspection device according to claim 2, characterized in that: The product rotating seat (3) includes a base (31), a motor (32), a reducer (33), and a fixed seat (34). The base (31) is connected to the product placement platform (5). The motor (32) and the reducer (33) are both located on the base (31). The first rotating end of the reducer (33) is connected to the motor (32), and the second rotating end of the reducer (33) is connected to the fixed seat (34).

4. The horizontal optical inspection device according to claim 2, characterized in that: It also includes a barcode scanner (6) and a barcode scanner bracket (7) for fixing the barcode scanner (6), wherein the barcode scanner bracket (7) is connected to the base (4), and the barcode scanner (6) is arranged above the product rotating seat (3) through the barcode scanner bracket (7).

5. The horizontal optical inspection device according to claim 4, characterized in that: The three-axis motion mechanism (2) is arranged on one side of the product placement platform (5), and the code scanner bracket (7) is arranged on the other side of the product placement platform (5).

6. The horizontal optical inspection device according to claim 2, characterized in that: The three-axis motion mechanism (2) comprises a first translation mechanism (21), a second translation mechanism (22), and a third translation mechanism (23); the first translation mechanism (21) has a motion direction of left-right motion relative to the product placement platform (5); the second translation mechanism (22) has a motion direction of front-back motion relative to the product placement platform (5); and the third translation mechanism (23) has a motion direction of up-down motion relative to the product placement platform (5).

7. The horizontal optical inspection device according to claim 6, characterized in that: The first translation mechanism (21), the second translation mechanism (22), and the third translation mechanism (23) all have relative fixed parts and movable parts. The fixed part of the first translation mechanism (21) is connected to the base (4) and is arranged parallel to the product placement platform (5). The fixed part of the second translation mechanism (22) is connected to the movable part of the first translation mechanism (21). The fixed part of the third translation mechanism (23) is connected to the movable part of the second translation mechanism (22).

8. The horizontal optical inspection device according to claim 2, characterized in that: The inspection device further comprises a mask (8), which is located on the base (4) and is used to partially shield external light that interferes with the image acquisition device (1).

9. The horizontal optical inspection device according to claim 8, characterized in that: Part of the mask (8) is arranged on the top of the image acquisition device (1), and the remaining part is arranged along the circumference of the image acquisition device (1), forming a semi-enclosed structure with three sides closed and one side open around the circumference of the image acquisition device (1).

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