Detection device

Abstract

The invention provides a detection device which is used for detecting an object to be detected, the first detection device comprises a first conveying device and a first detection device, a first conveying belt of the first conveying device is provided with a plurality of first holes in a penetrating manner, and one surface of the first conveying belt is provided with at least one first pattern; an outer edge of the to-be-detected object shields a part of the at least one first pattern, and the first detection device is arranged above the first conveying belt at an interval so as to detect whether the to-be-detected object enters a detection area and detect the to-be-detected object.

Description

Technical Field

[0001] The present invention relates to a detection device, and in particular to a device which can quickly locate an object to be detected and detect it accordingly. Background Art

[0002] Automated Optical Inspection (AOI) is a high-precision inspection technology widely used in the field of electronic manufacturing and component assembly. It uses optical cameras, image processing and computer analysis to detect the quality, installation position and possible manufacturing defects of electronic components, solder joints, printed circuit boards and other parts.

[0003] Since the automatic optical inspection system can effectively reduce the use of personnel, it is gradually widely used in various fields of electronic circuits, including integrated circuit process inspection, printed circuit board inspection, liquid crystal display panel inspection, etc.

[0004] However, as electronic products are increasingly moving towards smaller and thinner sizes, related components are also becoming smaller and smaller. More circuits and electronic components need to be accommodated in the same area or volume. In thin printed circuit board inspection, the object to be tested is often similar in color to the conveyor belt (for example, green or blue), which affects the optical focus of the automatic optical inspection device, resulting in inaccurate inspection. Therefore, the industry needs a detection device that can accurately detect the object to be tested.

[0005] In view of the above problems of the conventional technology, the present invention provides a detection device, which is a conveyor belt of a conveyor device with a pattern. When the object to be detected is placed, a part of the pattern is shielded, so that the detection device can detect the object to be detected according to the shielded part of the pattern to solve the above problems. Summary of the invention

[0006] One object of the present invention is to provide a detection device, which is a conveyor belt of a conveying device with at least one pattern arranged on its surface, and an object to be detected is arranged on the conveyor belt so that the outer edge of the object to be detected blocks a part of the pattern, so that the detection device can detect the object to be detected correspondingly according to the blocked part of the pattern, so as to achieve the purpose of quickly locating and detecting the object to be detected.

[0007] In order to achieve the above-mentioned purposes and effects, the present invention provides a detection device for detecting an object to be detected. The detection device includes: a first conveying device and a first detection device. The first conveying device includes: a first conveyor belt, a surface of which is provided with at least one first pattern, the object to be detected is arranged above the first conveyor belt, an outer edge of the object to be detected shields a part of the at least one first pattern, and the first detection device is arranged above the first conveyor belt at intervals. The first detection device detects the entry of the object to be detected based on the shielding area of ​​the at least one first pattern and detects the object to be detected; with this structure, a detection device that can be accurately aligned is provided.

[0008] In one embodiment of the present invention, an auxiliary detection device is further included, which is disposed above the first conveyor belt at intervals, and the auxiliary detection device detects the object to be detected according to the shielding area of ​​the at least one first pattern.

[0009] In an embodiment of the present invention, a first color of the first conveyor belt is different from a second color of the at least one first pattern.

[0010] In one embodiment of the present invention, the object to be tested is provided with a buffer zone and a detection zone, the buffer zone is provided at an outer edge of the detection zone, the buffer zone shields the portion of the at least one first pattern, and the first detection device detects the object to be tested according to the position of the at least one first pattern.

[0011] In one embodiment of the present invention, it further includes a first suction unit, which corresponds to the first conveyor belt and a plurality of first holes penetrated on the conveyor belt. The first holes are arranged below the first conveyor belt. The first suction unit absorbs the object to be tested through the first holes. The first suction unit is provided with a first air inlet and a first air outlet. The first air inlet is connected to the first hole correspondingly, and the first air outlet is connected to a pump.

[0012] In one embodiment of the present invention, it further includes: a second conveying device, which is correspondingly arranged at one end of the first conveying device, and the second conveying device includes: a second conveying belt, a surface of which is provided with at least one second pattern, the object to be tested is arranged below the second conveying belt, and an outer edge of the object to be tested covers a portion of the at least one second pattern; a second detection device, which is arranged at intervals below the second conveying belt, and the second detection device detects the object to be tested according to the shielding of the at least one second pattern.

[0013] In one embodiment of the present invention, the at least one second pattern is horizontal to the moving direction of the second conveyor belt, and a third color of the second conveyor belt is different from a fourth color of the at least one second pattern.

[0014] In one embodiment of the present invention, the object to be tested is provided with a buffer zone and a detection zone, the buffer zone is provided at an outer edge of the detection zone, the buffer zone shields the portion of the at least one second pattern, and the second detection device detects the object to be tested according to the position of the at least one second pattern.

[0015] In one embodiment of the present invention, a second air suction unit is further included, which corresponds to the second conveyor belt and the plurality of second holes penetrated by the at least one second pattern, the second holes are arranged above the second conveyor belt, and the second air suction unit absorbs the object to be tested through the second holes. The second air suction unit is provided with a second air inlet and a second air outlet, the second air inlet is connected to the second holes, and the second air outlet is connected to the pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 : It is a schematic structural diagram of an embodiment of the present invention; FIG. 2A to FIG. 2B : It is a schematic diagram of the operation of an embodiment of the present invention; FIG. 3A to FIG. 3C : It is a schematic diagram of the structure of an auxiliary detection device according to an embodiment of the present invention; and FIG. 4A to FIG. 4B : It is a schematic structural diagram of a second conveying device according to an embodiment of the present invention.

Figure number comparison

[0017] In order to further understand and appreciate the structural features and effects of the present invention, a preferred embodiment and detailed description are provided as follows:

[0018] In view of the above-mentioned problems of conventional technology, the present invention is a detection device, which includes a first conveying device and a first detection device. At least one first pattern is set on a surface of a first conveyor belt of the first conveying device. An outer edge of the object to be detected covers a part of the at least one first pattern so that the first detection device can detect the object to be detected, thereby solving the problem that the conventional object to be detected is often similar in color to the conveyor belt, resulting in inaccurate detection.

[0019] See also Figure 1 , which is a schematic diagram of the structure of an embodiment of the present invention. As shown in the figure, in this embodiment, it is a detection device 1, which includes: a first conveying device 10 and a first detection device 20; in this embodiment, the detection device 1 is a device for conveying the object to be detected 2 and detecting it.

[0020] See again Figure 1 As shown in the figure, in this embodiment, the first conveying device 10 includes a first conveying belt 12, and a surface of the first conveying belt 12 is provided with at least one first pattern M1 (the pattern style of the at least one first pattern M1 is not limited here, and the same applies below), and the object to be tested 2 is set above the first conveying belt 12, and the first conveying belt 12 drives the object to be tested 2 to move. When the object to be tested 2 is set above the first conveying belt 12, an outer edge of the object to be tested 2 covers a portion of the at least one first pattern M1, as shown in FIG. Figure 1 As shown, the object to be tested 2 will intercept the at least one first pattern M1. In addition, in one embodiment, a plurality of first holes 122 may be provided above the first conveyor belt 12. The purpose of the first holes 122 is to cooperate with the use of the suction unit so that the object to be tested 2 can be moved stably. In another embodiment, no holes are provided above the first conveyor belt 12, and a roller method (not shown) may be used to move the object to be tested 2 to achieve a stable effect.

[0021] Continuing from the above, the first detection device 20 is disposed above the first conveyor belt 12 at intervals, and the first detection device 20 is used to detect the object to be detected 2 .

[0022] Continuing from the above, in this embodiment, the at least one first pattern M1 is horizontal to the moving direction of the first conveyor belt 12, so that the at least one first pattern M1 forms a continuous pattern, but it is not limited thereto. The at least one first pattern M1 may also be a diagonal line pattern (such as Figure 3A shown).

[0023] Continuing from the above, in one embodiment, the at least one first pattern M1 may be a pattern of the entire area of ​​the first conveyor belt 12 , but the present invention is not limited thereto.

[0024] Continuing with the above, in this embodiment, a first color of the first conveyor belt 12 is different from a second color of the at least one first pattern M1. For example, the first color of the first conveyor belt 12 is blue or green, and the second color of the at least one first pattern M1 is yellow or red, so that the first detection device 20 can distinguish between the first conveyor belt 12 and the at least one first pattern M1.

[0025] See again Figure 1 Also see FIG. 2A to FIG. 2B , FIG. 2A to FIG. 2B The schematic diagram of the operation of an embodiment of the present invention is shown in the figure. In this embodiment, the object to be tested 2 is provided with a buffer zone 3 and a detection zone 4. The buffer zone 3 is annularly provided at an outer edge of the detection zone 4. When the object to be tested 2 is provided on the upper part of the first conveyor belt 12, the buffer zone 3 of the object to be tested 2 shields the portion of the at least one first pattern M1 to form a pattern interruption. When the object to be tested 2 is moved to the detection area of ​​the first detection device 20, the first detection device 20 knows that the object to be tested 2 enters a detection area 21 of the first detection device 20 according to the position of the at least one first pattern M1 interruption, and starts to detect the object to be tested 2 accordingly, thereby improving the alignment and detection accuracy of the object to be tested 2 when it moves. In this embodiment, the first detection device 20 can continuously detect from the buffer zone 3 to the detection zone 4, but it is not limited thereto. When the object to be tested 2 is not provided with the buffer zone 3, the first detection device 20 can directly detect the object to be tested 2 when the object to be tested 2 enters the detection area 21.

[0026] Continuing with the above, in one embodiment, the first conveying device 10 further includes a first suction unit 14, and the first suction unit 14 is arranged below the first conveying belt 12 corresponding to the position of the first conveying belt 12 and the first holes 122 through which the at least one first pattern M1 is penetrated. The first suction unit 14 absorbs the object to be tested 2 through the first holes 122 to prevent the object to be tested 2 from moving arbitrarily and causing sliding and collision, but this is not limited to this, and at least one roller can also be used to abut the object to be tested 2 against the top of the first conveying belt 12.

[0027] Continuing with the above, in one embodiment, the first air suction unit 14 of the first conveying device 10 is provided with a first air inlet 142 (not shown) and a first air outlet 144. The first air inlet 142 is connected to the first hole 122, and the first air outlet 144 is connected to a pump 16. The pump 16 extracts the gas (such as air) in the first air suction unit 14 so that the object to be tested 2 can be adsorbed on the top of the first conveyor belt 12.

[0028] See also FIG. 3A to FIG. 3C , FIG. 3A to FIG. 3C This is a schematic diagram of the structure of an auxiliary detection device according to an embodiment of the present invention. As shown in the figure, this embodiment further includes an auxiliary detection device 20', which is arranged at intervals above the first conveyor belt 12. Like the first detection device 20, the auxiliary detection device 20' detects the object to be detected 2 according to the shielding area of ​​the at least one first pattern M1; in this embodiment, the first detection device 20 and the auxiliary detection device 20' individually detect a part of the object to be detected 2 (for example, individually scan and detect according to the moving direction), and the first detection device 20 and the auxiliary detection device 20' individually transmit the image to the processing component for the processing component to determine whether it is abnormal.

[0029] Continuing from the above, in one embodiment, the at least one first pattern M1 is composed of a plurality of oblique line patterns and is distributed on the surface of the first conveyor belt 12. When the object to be tested 2 is tilted (eg Figure 3C ), the first detection device 20 and the auxiliary detection device 20' respectively know that the object to be detected 2 enters the detection area 21 and the detection area 21' according to the different positions of the interruption of the at least one first pattern M1, and respectively start to detect the object to be detected 2. After the detection, the images obtained by the first detection device 20 and the auxiliary detection device 20' are spliced / superimposed into a complete image for subsequent devices to determine whether there is an abnormality.

[0030] Continuing with the above, in the above embodiment, the detection area 21 of the first detection device 20 covers multiple oblique line figures of the at least one first pattern M1. Similarly, the detection area 21' of the auxiliary detection device 20' also covers multiple oblique line figures of the first pattern M1. The first detection device 20 and the auxiliary detection device 20' respectively determine the displacement status (for example, rotation angle) of the object to be detected 2 according to the interruption point of the at least one first pattern M1. In one embodiment, the first detection device 20 and the auxiliary detection device 20' are used to detect the interruption points of multiple first patterns M1, so that one of the first detection device 20 and the auxiliary detection device 20' can detect the displacement status of the object to be detected 2, further avoiding detection omissions.

[0031] See also FIG. 4A to FIG. 4B , FIG. 4A to FIG. 4B This is a schematic diagram of the structure of the second conveying device of an embodiment of the present invention. As shown in the figure, in this embodiment, the detection device 1 further includes a second conveying device 30 and a second detection device 40. The second conveying device 30 is correspondingly arranged at one end of the first conveying device 10, and the second conveying device 30 and the first conveying device 10 are inverted with each other, so that the second conveying device 30 is used to detect the bottom of the object to be detected 2.

[0032] See again FIG. 4A to FIG. 4B As shown in the figure, in this embodiment, the second conveying device 30 includes: a second conveying belt 32, a surface of the second conveying belt 32 is provided with at least one second pattern M2, the object to be tested 2 is arranged below the second conveying belt 32, an outer edge of the object to be tested 2 covers a part of the at least one second pattern M2, and the second conveying device 30 is used for the object to be tested 2 to change the surface for detection (such as Figure 4B shown).

[0033] Continuing from the above, the second detection device 40 is disposed below the second conveyor belt 32 at intervals. The first detection device 20 detects one side of the object to be detected 2 , and the second detection device 40 is used to detect the other side of the object to be detected 2 .

[0034] Continuing from the above, in this embodiment, like the first conveying device 10, the at least one second pattern M2 is horizontal to the moving direction of the second conveying belt 32, so that the at least one second pattern M2 forms a continuous pattern, but it is not limited thereto. The at least one second pattern M2 can be the same as the at least one first pattern M1, and can be a diagonal line pattern (such as Figure 3A shown).

[0035] Continuing from the above, in one embodiment, the at least one second pattern M2 may be a pattern of the entire area of ​​the second conveyor belt 32 , but the present invention is not limited thereto.

[0036] Continuing with the above, in this embodiment, a third color of the second conveyor belt 32 is different from a fourth color of the at least one second pattern M2. For example, the third color of the second conveyor belt 32 is blue or green, and the fourth color of the at least one second pattern M2 is yellow or red, so that the second detection device 40 can distinguish between the second conveyor belt 32 and the at least one second pattern M2.

[0037] See again FIG. 4A to FIG. 4B As shown in the figure, in this embodiment, when a part of the object to be tested 2 leaves the first conveyor belt 12, when the part of the object to be tested 2 is set under the second conveyor belt 32, the buffer zone 3 of the object to be tested 2 shields the part of the at least one second pattern M2 to form a pattern interruption. When the object to be tested 2 is moved to the detection area of ​​the second detection device 40, the second detection device 40 knows that the object to be tested 2 enters the detection area of ​​the second detection device 40 according to the position of the at least one second pattern M2 interruption, and starts to detect the object to be tested 2 accordingly, so that the second detection device 40 can continuously detect from the buffer zone 3 to the detection area 4, thereby improving the alignment and detection accuracy of the object to be tested 2 during high-speed conveying movement, but it is not limited thereto. When the object to be tested 2 is not provided with the buffer zone 3, the second detection device 40 can directly detect the object to be tested 2 when the object to be tested 2 enters the detection area.

[0038] Continuing with the above, in one embodiment, the second conveying device 30 further includes a second suction unit 34, and the second suction unit 34 is arranged above the second conveying belt 32 corresponding to the position of the second conveying belt 32 and the plurality of second holes 322 through which the at least one second pattern M2 is penetrated. The second suction unit 34 absorbs the object to be tested 2 through the second holes 322 to prevent the object to be tested 2 from moving arbitrarily and causing sliding and collision, but this is not limited to this, and at least one roller can also be used to abut the object to be tested 2 against the bottom of the second conveying belt 32.

[0039] Continuing with the above, in one embodiment, like the first conveying device 10, the second suction unit 34 of the second conveying device 30 is provided with a second air inlet 342 and a second air outlet 344, the second air inlet 342 is connected to the second hole 322, and the second air outlet 344 is connected to a pump (not shown), and the pump is used to extract the gas (such as air) in the second suction unit 34, so that the object to be tested 2 can be adsorbed under the second conveyor belt 32.

[0040] Continuing with the above, in one embodiment, the first detection device 20, the auxiliary detection device 20' and the second detection device 40 can detect whether the first conveyor belt 12 and the second conveyor belt 32 are skewed according to the at least one first pattern M1 or the at least one second pattern M2; for example, the first detection device 20 obtains the image of the at least one first pattern M1 of the first conveyor belt 12 in operation, and transmits it to the processing component for the processing component to determine whether it is abnormal, and notify personnel to replace the conveyor belt or correct the position of the conveyor belt.

[0041] In summary, the present invention provides a detection device, which is arranged on the surface of a conveyor belt of a conveyor device with a pattern different from the color of the conveyor belt. When the object to be detected is set on the conveyor belt, the object to be detected will cover a part of the pattern, causing an interruption in the pattern. The interruption enables the detection device to obtain the position of the object to be detected according to the interruption in the pattern, so as to quickly locate and detect the object to be detected. After positioning, the object to be detected begins to be detected accordingly, thereby solving the problem of inaccurate detection caused by poor focus due to the similar color of the object to be detected and the conveyor belt in the conventional detection device.

[0042] However, the above is only an embodiment of the present invention and is not intended to limit the scope of the present invention. Therefore, all equivalent changes and modifications based on the shape, structure, characteristics and spirit described in the patent application scope of the present invention should be included in the patent application scope of the present invention.

[0043] The order of execution of each step in the above embodiment does not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

[0044] The above is only a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. All equivalent changes and modifications to the shape, structure, characteristics and spirit described in the claims of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A detection device, characterized in that: It is used to detect an object to be detected, and the detection device comprises: A first conveying device, comprising: a first conveyor belt, a surface of which is provided with at least one first pattern, the object to be tested is disposed above the first conveyor belt, and an outer edge of the object to be tested covers a portion of the at least one first pattern; and A first detection device is disposed above the first conveyor belt at intervals. The first detection device detects the entry of the object to be detected based on the shielding area of ​​the at least one first pattern and detects the object to be detected.

2. The detection device according to claim 1, characterized in that The invention further comprises an auxiliary detection device which is arranged at intervals above the first conveyor belt, and the auxiliary detection device detects the object to be detected according to the shielding area of ​​the at least one first pattern.

3. The detection device according to claim 1, characterized in that: A first color of the first conveyor belt is different from a second color of the at least one first pattern.

4. The detection device according to claim 1, characterized in that: The object to be tested is provided with a buffer zone and a detection zone, the buffer zone is provided at an outer edge of the detection zone, the buffer zone shields the portion of the at least one first pattern, and the first detection device detects the object to be tested according to the position of the at least one first pattern.

5. The detection device according to claim 1, characterized in that: It further includes a first suction unit, which corresponds to the first conveyor belt and the plurality of first holes penetrated by the at least one first pattern. The first holes are arranged below the first conveyor belt. The first suction unit absorbs the object to be tested through the first holes. The first suction unit is provided with a first air inlet and a first air outlet. The first air inlet is connected to the first hole correspondingly, and the first air outlet is connected to a pump.

6. The detection device according to claim 1, characterized in that: Also includes: A second conveying device, which is correspondingly arranged at one end of the first conveying device, and the second conveying device comprises: a second conveyor belt, a surface of which is provided with at least one second pattern, the object to be tested is provided below the second conveyor belt, and an outer edge of the object to be tested covers a portion of the at least one second pattern; and A second detection device is disposed below the second conveyor belt at intervals. The second detection device detects the entry of the object to be detected based on the shielding area of ​​the at least one second pattern and detects the object to be detected.

7. The detection device according to claim 6, characterized in that: The at least one second pattern is horizontal to a moving direction of the second conveyor belt, and a third color of the second conveyor belt is different from a fourth color of the at least one second pattern.

8. The detection device according to claim 7, characterized in that: The object to be tested has a buffer zone and a detection zone, the buffer zone is set at an outer edge of the detection zone, the buffer zone shields the portion of the at least one second pattern, and the second detection device detects the object to be tested according to the position of the at least one second pattern.

9. The detection device according to claim 7, characterized in that: It further includes a second air suction unit, which corresponds to the second conveyor belt and the plurality of second holes penetrated by the at least one second pattern, the second holes are arranged above the second conveyor belt, the second air suction unit absorbs the object to be tested through the second holes, the second air suction unit is provided with a second air inlet and a second air outlet, the second air inlet is connected to the second holes, and the second air outlet is connected to the pump.

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