TW202135976A - Workpiece detection system and workpiece detection method - Google Patents

Abstract

A workpiece detection system and workpiece detection method. A workpiece detection system includes a first detection station, a second detection station and a detection module. The first detection station includes a rotating needle device and a first camera. The rotating needle device is used to receive a workpiece, and the first camera is used to detect a first side of the workpiece to shoot a first image. The second detection station is adjacent to the first detection station. The second detection station includes a second camera. The rotating needle device rotates around a first axis and conveys the workpiece to a second detection station. The second camera is used to detect the second surface of the workpiece to shoot a second image. The detection module is electrically connected to the first camera and the second camera. The detection module obtains a first detection result based on the first image, and obtains a second detection result based on the second image.

Description

Workpiece detection system and workpiece detection method

The invention relates to a detection system and a detection method, and more particularly to a workpiece detection system and a workpiece detection method.

Generally speaking, the workpiece usually has a concave or irregular surface, so it is often necessary to use manual turning, turning device or robotic arm to achieve a more comprehensive surface inspection. However, all of the aforementioned methods are not easy to pick up, which in turn causes the problem of low detection efficiency. Therefore, how to design a workpiece inspection system and a workpiece inspection method to achieve a more comprehensive surface inspection and at the same time improve the inspection efficiency of the workpiece has always been an urgent problem for related manufacturers to overcome.

The workpiece detection system and the workpiece detection method of the present invention can achieve a more comprehensive surface detection of the workpiece and simultaneously improve the detection efficiency.

The workpiece inspection system of the present invention includes a first inspection station and a second inspection station. The first inspection station includes a rotating needle device and a first camera. The rotating needle device is used for receiving the workpiece, and the first camera is used for shooting the first surface of the workpiece to obtain the first image. The second inspection station is not adjacent to the first inspection station. The second inspection station includes a second camera. The rotating needle device rotates and transports the workpiece to the second inspection station, and the second camera is used to photograph the second surface of the workpiece to obtain a second image. The detection module is electrically connected to the first camera and the second camera. The detection module obtains a first detection result according to the first image, and obtains a second detection result according to the second image.

The workpiece detection method of the present invention includes at least the following steps. Provide the workpiece to the first inspection station. The workpiece is received by the rotating needle device, and the first surface of the workpiece is photographed by the first camera to obtain the first image, and the first image is transmitted to the detection module. The rotating needle device is rotated around the first axis and the workpiece is transported to the second inspection station. The second camera is used to detect the second surface of the workpiece to obtain a second image, and the second image is transmitted to the detection module. The detection module obtains the first detection result according to the first image, and obtains the second detection result according to the second image.

Based on the above, the workpiece inspection system of the present invention is configured with the first inspection station and the second inspection station to allow the first camera and the second camera to capture images of different surfaces of the workpiece to obtain corresponding surface images. Through the detection module to obtain the corresponding detection results. Moreover, the workpiece can be picked up by the rotating needle device without using manual or robotic arms, which can reduce the difficulty of picking up the workpiece. In addition, the workpiece can be quickly turned over by the rotation of the rotating needle device to drive the workpiece to increase the turning rate. Therefore, the workpiece detection system of the present invention can achieve a more comprehensive surface detection of the workpiece and can effectively improve the surface at the same time. The inspection efficiency of the workpiece.

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail in conjunction with the accompanying drawings.

Now referring to the exemplary embodiments of the present invention in detail, examples of the exemplary embodiments are illustrated in the accompanying drawings. In addition, wherever possible, workpieces/components with the same reference numbers in the drawings and embodiments represent the same or similar parts.

Fig. 1 is a schematic side view of a workpiece detection system according to an embodiment of the present invention. Please refer to FIG. 1, in this embodiment, the workpiece inspection system 100 includes a first inspection station 110 and a second inspection station 120. The first inspection station 110 includes a rotating needle device 112 and a first camera 114. The rotating needle device 112 is used to receive the workpiece 10, and the first camera 114 is used to detect the first surface 10a of the workpiece 10 to obtain a first image. On the other hand, the second inspection station 120 is adjacent to the first inspection station 110, and the second inspection station 120 includes a second camera 122, wherein the rotating needle device 112 rotates around the first axis A1 and transports the workpiece 10 to the second inspection station. The station 120 and the second camera 122 are used to detect the second surface 10b of the workpiece 10 to obtain a second image. The second surface 10b of the workpiece 10 may be opposite to the first surface 10a. It should be noted that in this embodiment, the workpiece 10 can be transferred in the direction of the arrow shown in FIG. 1, however, the present invention is not limited to this. In addition, the workpiece 10 may be a hollow workpiece with a hole, such as a sleeve with a hole, a washer, a nut, a box or a box, etc., but the present invention is not limited to this, and the workpiece 10 may be any suitable surface inspection required. Artifact.

The first camera 114 and the second camera 122 are, for example, infrared image capturing devices. For example, the first camera 114 and the second camera 122 are, for example, a line scan camera or an area scan camera. Furthermore, the first image and the second image of the workpiece 10 can be transmitted to the inspection module 130 for surface inspection. The inspection module 130 is electrically connected to the first camera 114 and the second camera 122, but the present invention is not limited thereto. The combination of the first camera 114, the second camera 122 and the detection module 130 may be other suitable devices with surface detection functions.

The detection module 130 is, for example, a central processing unit (Central Processing Unit, CPU), other programmable general-purpose or special-purpose microprocessors (microprocessors), digital signal processors (Digital Signal Processors, DSPs), programmable Controller, Application Specific Integrated Circuits (ASIC), Programmable Logic Device (PLD), other similar processing devices or a combination of these devices, and can be built-in or external memory, but The present invention is not limited to this.

In this embodiment, the workpiece inspection system 100 is configured with the first inspection station 110 and the second inspection station 120 to allow the first camera 114 and the second camera 122 to capture images of different surfaces of the workpiece 10, and then The detection module 130 obtains the corresponding surface detection result. Furthermore, the workpiece 10 can be picked up by the rotating needle device 112 without using manual or robotic arms to pick up the workpiece 10, and the difficulty of picking up the workpiece 10 can be reduced. In addition, the workpiece 10 can be quickly turned over by the rotation of the rotating needle device 112 to drive the workpiece 10 to increase the turning rate. Therefore, the workpiece inspection system 100 of this embodiment can achieve a more comprehensive surface inspection of the workpiece 10 At the same time, the detection efficiency of the workpiece 10 can be effectively improved.

Fig. 2 is a schematic side view of a workpiece detection system according to another embodiment of the present invention. Please refer to FIG. 2, the rotating needle device 112 of the workpiece detection system 100a of this embodiment may further include a rotating shaft 1121 for rotating around the first axis A1 to rotate the workpiece 10 to move to different positions. For example, as shown in FIG. 2, after the rotating needle device 112 receives the workpiece 10, the workpiece 10 is located at the first position L1 to be photographed by the first camera 114 to obtain the first image. Next, the rotating shaft 1121 rotates 180 degrees clockwise around the first axis A1 to move the workpiece 10 from the first position L1 to the second position L2, and separate the workpiece 10 from the rotating needle device 112, where the first position L1 and the second position L2 It may be located on opposite sides of the rotating shaft 1121.

Furthermore, the first camera 114 can also be used to photograph the side surface 10s of the workpiece 10 connecting the first surface 10a and the second surface 10b. For example, after the workpiece 10 obtains the first image at the first position L1, the rotating shaft 1121 can first rotate 90 degrees clockwise around the first axis A1, so that the workpiece 10 moves from the first position L1 to the intermediate position L3 first, so that the workpiece 10 The side 10s of the first camera 114 faces the first camera 114 to capture the first camera 114 to obtain a third image. The third image is then transmitted to the detection module 130 to obtain the third detection result. Therefore, the workpiece detection system 100a can further detect the workpiece 10 The side surface 10s that is different from the first surface 10a and the second surface 10b increases the detection range of the workpiece detection system 100a.

In one embodiment, the rotating shaft 1121 can be reciprocatingly rotated, but the present invention is not limited to this. In other embodiments, the rotating shaft 1121 can also be regularly rotated in a clockwise or counterclockwise direction. It should be noted that the present invention does not limit the rotation mode of the rotating shaft 1121, such as the rotation direction and the rotation angle, which may be determined according to actual requirements.

The rotating needle device 112 of the workpiece detection system 100a of this embodiment may further include at least one thimble 1122 connected to the rotating shaft 1121 for passing through the workpiece 10, wherein the thimble 1122 is rotatably connected to the rotating shaft 1121, and is rotatably connected to the first axis A1. The second axis A2 rotates. For example, when the workpiece 10 is in the middle position L3 for detection, the thimble 1122 can rotate around the second axis A2 at the same time, so that the workpiece 10 can more completely detect the entire side surface 10s of the workpiece 10, but the present invention is not limited to this.

The rotating needle device 112 of the workpiece detection system 100a of this embodiment may further include a support portion 1123 connected to the thimble 1122, and the support portion 1123 is kept at a distance W from the rotating shaft 1121, wherein the support portion 1123 can be used to support the workpiece 10 so that the workpiece 10 In the process of detection and movement, there will be no violent shaking, which will affect the detection result. In an embodiment, the thimble 1122 and the supporting portion 1123 may be an integrally formed structure, but the present invention is not limited to this. In other embodiments, the thimble 1122 and the supporting portion 1123 may also be assembled through assembly.

The first inspection station 110 of the workpiece inspection system 100a of this embodiment may further include a first conveying path P1, wherein the rotating needle device 112 is located at the end of the first conveying path P1, and the first conveying path P1 is used to convey the workpiece 10 to旋针装置112。 Rotating needle device 112. The second inspection station 120 may further include a second conveying path P2, wherein the second conveying path P2 is located between the rotating needle device 112 and the second camera 122, and the second conveying path P2 is used to receive the workpiece 10 separated from the rotating needle device 112 And convey the workpiece 10 to the second camera 122.

Furthermore, the first inspection station 110 may further include a first conveying device 116, and the second inspection station 120 may further include a second conveying device 124, wherein the first conveying device 116 is located on the first conveying path P1, and the second conveying device 124 is located on the second conveying path P2. The rotating needle device 112 is located at one side of the first conveying device 116, and the first conveying device 116 is used to convey the workpiece 10 to the rotating pin device 112. On the other hand, the second conveying device 124 is located between the rotating needle device 112 and the second camera 122, and the second conveying device 124 is used for receiving the workpiece 10 separated from the rotating needle device 112 and conveying the workpiece 10 to the second camera 122.

In this embodiment, the first conveying device 116 and the second conveying device 124 are located on different sides of the rotating needle device 112, as shown in FIG. 2. In an embodiment, the first conveying device 116 and the second conveying device 124 may be implemented by conveying belts, respectively, but the present invention is not limited to this.

Specifically, the workpiece 10 can be transported to the rotating needle device 112 at its end via the first conveying device 116. After the rotating needle device 112 receives the workpiece 10 to obtain the first image of the workpiece 10, the rotating needle device 112 rotates to transfer the workpiece 10 Move to the top of the second conveying device 124, so that the workpiece 10 is separated from the rotating needle device 112 and falls on the second conveying device 124, and the workpiece 10 is conveyed under the second camera 122 via the second conveying device 124, but the present invention does not Limited to this. On the other hand, there may be a height difference between the first conveying path P1 and the second conveying path P2. The first conveying path P1 may be higher than the second conveying path P2. Accordingly, the first conveying device 116 may be higher than the first conveying path P2. The second conveying device 124 is shown in FIG. 2, but the present invention is not limited to this. The relative relationship between the first conveying path P1 and the second conveying path P2 may be determined according to actual design requirements.

In the embodiment where the workpiece 10 is a hollow workpiece, the workpiece 10 can be directly dropped and sheathed on the rotating needle device 112 via the first conveying device 116 for subsequent detection actions, but the present invention is not limited to this.

Please continue to refer to FIG. 2, the first inspection station 110 may further include a feeding device 118, and the feeding device 118 is located above the first conveying device 116 to provide the workpiece 10 to the first conveying device 116. Here, the present invention does not limit the manner in which the feeding device 118 provides the workpiece 10 to the first conveying device 116, and the feeding device 118 may provide the workpiece 10 to the first conveying device 116 in an appropriate manner.

In one embodiment, the operation process of the feeding device 118, the first conveying device 116, the rotating needle device 112, and the second conveying device 124 can be controlled by a controller (not shown) to improve the detection process of the workpiece detection system 100a Fluency in the process. For example, the controller can be a central processing unit (Central Processing Unit, CPU), other programmable general-purpose or special-purpose microprocessors, digital signal processors (DSP), and Programmable controller, Application Specific Integrated Circuits (ASIC), Programmable Logic Device (PLD), other similar processing devices or a combination of these devices, and can be built-in or external memory , But the present invention is not limited to this.

Fig. 3 is a schematic top view of a rotating needle device of a workpiece detection system according to another embodiment of the present invention. It should be noted that, for the sake of simplicity of the drawing, the workpiece detection system 100b of FIG. 3 only shows the parts that are different from the workpiece detection system 100a of FIG. 2. Please refer to FIG. 3, the workpiece detection system 100b of this embodiment is similar to the workpiece detection system 100a of FIG. The thimble 1122 is arranged along a direction parallel to the first axis A1, where the direction of the first axis A1 may be the same as the extending direction D of the rotating shaft 1121. Therefore, the workpiece detection system 100b of this embodiment can simultaneously detect multiple workpieces 10 to further improve the detection efficiency of the workpiece 10.

Fig. 4 is a flowchart of the steps of a method for detecting a workpiece according to an embodiment of the present invention. Please refer to FIGS. 1 to 4 at the same time. The workpiece detection method of this embodiment may include the following steps. First, in step S100, the workpiece 10 is provided to the first inspection station 110. In step S200, the workpiece 10 is received by the rotating needle device 112, and the first surface 10a of the workpiece 10 is photographed by the first camera 114 to obtain a first image, and the first image is transmitted to the detection module 130. In step S300, the rotating needle device 112 is rotated about the first axis A1 and the workpiece 10 is transported to the second inspection station 120. In step S400, the second camera 122 photographs the second surface 10b of the workpiece 10 to obtain a second image, and the second image is transmitted to the detection module 130. In step S500, the detection module 130 obtains a first detection result according to the first image, and obtains a second detection result according to the second image.

In one embodiment, between step S200 and step S300, it may further include rotating the needle device 112 to turn the side 10s of the workpiece 10 toward the first camera 114, and the first camera 114 detects the side 10s of the workpiece 10 to The step of obtaining the third image (not shown in FIG. 4), but the present invention is not limited to this.

Fig. 5 is a schematic top view of a workpiece detection system according to still another embodiment of the present invention. Please refer to FIG. 5, the workpiece detection system 100c of this embodiment is similar to the workpiece detection system 100 of FIG. For example, when the workpiece 10 is not a hollow workpiece, the workpiece detection system 100c of this embodiment can accept the workpiece 10 through the suction nozzle S, but the invention is not limited to this.

Fig. 6 is a schematic top view of a workpiece detection system according to still another embodiment of the present invention. Please refer to FIG. 6, the workpiece detection system 100d of this embodiment is similar to the workpiece detection system 100a of FIG. Opposite to the side of the rotating needle device 112, the vibrating disk 119 is used to provide the workpiece 10 to the first conveying device 116. Furthermore, in this embodiment, the feeding device 118 shown in FIG. 2 can be replaced by a vibrating disk 119 to provide the workpiece 10 to the first conveying device 116.

The workpiece detection method of the present invention can obtain sufficient teaching, suggestion and implementation description from the description of the embodiments in FIG. 1 to FIG. 6, so it will not be repeated here.

To sum up, the workpiece inspection system of the present invention, through the configuration of the first inspection station and the second inspection station, allows the first camera and the second camera to capture images of different surfaces of the workpiece to capture corresponding surface images , And then use the detection module to get the corresponding detection result. Moreover, the workpiece can be picked up by the rotating needle device without using manual or robotic arms, which can reduce the difficulty of picking up the workpiece. In addition, the workpiece can be quickly turned over by the rotation of the rotating needle device to drive the workpiece to increase the turning rate. Therefore, the workpiece detection system of the present invention can achieve a more comprehensive surface detection of the workpiece and can effectively improve the surface at the same time. The inspection efficiency of the workpiece. In addition, the workpiece detection system of the present invention can further detect the side of the workpiece to increase the detection range of the workpiece detection system.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the present invention. Anyone with ordinary knowledge in the relevant technical field can make some changes and modifications without departing from the spirit and scope of the present invention. The protection scope of the present invention shall be subject to those defined by the attached patent application scope.

10: Workpiece 10a: First side 10b: Second side 10s: side 100, 100a, 100b, 100c, 100d: workpiece inspection system 110: The first inspection station 112: Rotating needle device 1121: shaft 1122: thimble 1123: Support 114: The first camera 116: The first conveying device 118: Feeding device 119: Vibration Disk 120: The second inspection station 122: second camera 124: The second conveying device A1: The first axis A2: second axis D: Extension direction L1: first position L2: second position L3: middle position P1: The first conveying path P2: The second conveying path S100, S200, S300, S400, S500: steps S: Nozzle W: distance

Fig. 1 is a schematic side view of a workpiece detection system according to an embodiment of the present invention. Fig. 2 is a schematic side view of a workpiece detection system according to another embodiment of the present invention. Fig. 3 is a schematic top view of a rotating needle device of a workpiece detection system according to another embodiment of the present invention. Fig. 4 is a flowchart of the steps of a method for detecting a workpiece according to an embodiment of the present invention. Fig. 5 is a schematic side view of a workpiece detection system according to still another embodiment of the present invention. Fig. 6 is a schematic side view of a workpiece detection system according to still another embodiment of the present invention.

10: Workpiece

10a: First side

10b: Second side

100: Workpiece inspection system

110: The first inspection station

112: Rotating needle device

114: The first camera

120: The second inspection station

122: second camera

130: detection module

A1: The first axis

Claims (14)

A workpiece detection system, including: The first inspection station includes a rotating needle device and a first camera, the rotating needle device is used to receive the workpiece, and the first camera is used to photograph the first surface of the workpiece to obtain a first image; The second inspection station is adjacent to the first inspection station, the second inspection station includes a second camera, the rotating needle device rotates around the first axis and transports the workpiece to the second inspection station, The second camera is used to photograph the second surface of the workpiece to obtain a second image; and A detection module is electrically connected to the first camera and the second camera. The detection module obtains a first detection result according to the first image, and obtains a second detection result according to the second image. The workpiece detection system as described in item 1 of the scope of patent application, in which: The first inspection station further includes a first conveying device, the rotating needle device is located on one side of the first conveying device, and the first conveying device is used to convey the workpiece to the rotating needle device; as well as The second inspection station further includes a second conveying device, wherein the second conveying device is located between the rotating needle device and the second camera, and the second conveying device is used for receiving and detaching the rotating needle The workpiece of the device and transport the workpiece to the second camera. The workpiece inspection system according to the second item of the scope of patent application, wherein the first inspection station further includes a feeding device, and the feeding device is located above the first conveying device, and the feeding device is used for The workpiece is provided to the first conveying device. The workpiece inspection system according to the second item of the scope of patent application, wherein the first inspection station further includes a vibrating disk, and the vibrating disk is located on the side of the first conveying device opposite to the rotating needle device, so The vibration plate is used to provide the workpiece to the first conveying device. The workpiece detection system according to the first item of the scope of patent application, wherein the rotating needle device rotates around a second axis perpendicular to the first axis and makes the side of the workpiece face the first camera, and A camera is used to photograph the side surface of the workpiece to obtain a third image, the side surface connects the first surface and the second surface, and the detection module obtains a third image according to the third image Test results. The workpiece detection system as described in item 1 of the scope of patent application, wherein the rotating needle device includes: A rotating shaft for rotating around the first axis; and At least one thimble is connected to the rotating shaft for passing through the workpiece. The workpiece detection system according to the sixth item of the scope of patent application, wherein the at least one thimble is rotatably connected to the rotating shaft, and is used to rotate around a second axis perpendicular to the first axis. According to the work detection system described in item 6 of the scope of patent application, the number of the at least one ejector pin is multiple, and the multiple ejector pins are arranged in a direction parallel to the first axis. According to the work detection system described in item 6 of the scope of patent application, the rotating needle device further includes a supporting part connected with the at least one thimble, and the supporting part is kept at a distance from the rotating shaft. The workpiece inspection system according to the first item of the scope of patent application, wherein the first inspection station further includes a first conveying path, the rotating needle device is located at the end of the first conveying path, and the first conveying path For conveying the workpiece to the rotating needle device, the second inspection station further includes a second conveying path, wherein the second conveying path is located between the rotating needle device and the second camera, and The second conveying path is used for receiving the workpiece separated from the rotating needle device and conveying the workpiece to the second camera. The workpiece detection system according to the 10th patent application, wherein there is a height difference between the first conveying path and the second conveying path. The workpiece detection system according to the first item of the scope of patent application, wherein the rotating needle device includes a suction nozzle for sucking the workpiece. A workpiece detection method, including: Provide the workpiece to the first inspection station; Receiving the workpiece by a rotating needle device, and photographing the first surface of the workpiece by a first camera to obtain a first image, and the first image is transmitted to the detection module; Rotating the rotating needle device around the first axis and transporting the workpiece to the second inspection station; Photographing the second surface of the workpiece by a second camera to obtain a second image, and the second image is transmitted to the detection module; and The detection module obtains a first detection result according to the first image, and obtains a second detection result according to the second image. The workpiece detection method described in item 13 of the scope of patent application includes: Before conveying the workpiece to the second inspection station, the rotating needle device rotates around a second axis perpendicular to the first axis and makes the side surface of the workpiece face the first camera, and by The first camera photographs the side surface of the workpiece to obtain a third image, wherein the third image is transmitted to the detection module, and the detection module obtains a third detection according to the third image result.

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