Jacking rotating mechanism and visual inspection device

Abstract

The utility model discloses a jacking rotating mechanism and a visual inspection device, and belongs to the technical field of automatic assembly and detection. The jacking and rotating mechanism comprises a jacking assembly and a rotating assembly; the jacking assembly comprises an electric cylinder and a first mounting plate, and the output end of the electric cylinder drives the first mounting plate to execute lifting action through a first connecting piece; the rotating assembly comprises a motor and a rotating shaft in transmission connection with the output end of the motor, the rotating assembly is provided with a proximity switch, and the proximity switch is used for sending a signal to continue to execute an instruction after the motor stops rotating and when it is detected that the rotating shaft rotates in place; and the first mounting plate is in transmission connection with the rotating assembly through the second connecting piece, and when the first mounting plate executes the lifting action, the rotating assembly can be driven by the second connecting piece to ascend and descend along with the first mounting plate. In-place rotation of the rotating shaft is detected through the proximity switch, and the operation safety of the device is improved; through mutual cooperation of multiple mechanisms, pose adjustment and flexible detection of the to-be-detected piece are realized, and the detection efficiency of the device is improved.

Description

Technical Field

[0001] This utility model belongs to the field of automated assembly and inspection technology, and in particular relates to a lifting and rotating mechanism and a visual inspection device. Background Technology

[0002] In automated production or assembly lines, to ensure workpiece quality and processing accuracy, it is often necessary to inspect the workpiece after processing. When using a line laser measuring instrument or scanner to scan the workpiece, there will be blind spots, so it is impossible to generate complete point cloud data for the workpiece with just one scan. Usually, vision inspection devices are set up at multiple angles, but this method increases costs and makes subsequent processing more complicated.

[0003] To improve detection efficiency, Chinese utility model patent CN219799476U discloses an online detection device for dishwasher inner tubs. The lifting and rotating mechanism in this device drives a rotating table to rotate clockwise or counterclockwise via a drive motor to improve detection efficiency. However, due to factors such as braking force, inertia, or unstable transmission system, the stopping position of the motor may deviate from the ideal position. Excessive error will prevent the workpiece from being properly conveyed, and the accumulation of error will affect the detection of subsequent workpieces, resulting in low detection efficiency and poor safety of the device. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a lifting and rotating mechanism and a visual inspection device. By configuring a proximity switch, it can detect that the rotating shaft has rotated into place, thereby improving the safety of the device operation. Through the cooperation of multiple mechanisms, it can realize the adjustment of the position and posture of the workpiece under test and the flexible detection, and improve the detection efficiency of the device.

[0005] To achieve the above objectives, this utility model employs the following technical solution:

[0006] In a first aspect, this utility model provides a lifting and rotating mechanism, including a lifting component and a rotating component; the lifting component includes an electric cylinder and a first mounting plate, the output end of the electric cylinder drives the first mounting plate to perform a lifting action through a first connecting member; the rotating component includes a motor and a rotating shaft that is hygienically connected to the output end of the motor, the rotating component is equipped with a proximity switch, which is used to send a signal to continue executing the command after the motor stops rotating and the rotating shaft is detected to be in position; the first mounting plate is hygienically connected to the rotating component through a second connecting member, and when the first mounting plate performs a lifting action, the rotating component can follow the first mounting plate to rise and fall together under the drive of the second connecting member.

[0007] In conjunction with the first aspect, the output end of the motor is further connected to a speed reducer, and the output end of the speed reducer is fixedly connected to the rotating shaft via a coupling and / or a key.

[0008] In conjunction with the first aspect, the second connecting member is further fitted onto the reducer; a first support seat is fitted onto the coupling, and the first support seat is supported on the second connecting member.

[0009] In conjunction with the first aspect, further, a second support is rotatably mounted on one end of the rotating shaft near the motor, the second support rests on the first support, and the proximity switch is mounted on the second support via a third connector; a sensing pin is provided on the rotating shaft, and when the sensing pin rotates with the rotating shaft to within the sensing distance of the proximity switch, the proximity switch sends a signal to continue executing the command.

[0010] In conjunction with the first aspect, the end of the rotating shaft away from the motor is further connected to a rotating plate.

[0011] Secondly, this utility model also provides a visual inspection device, including a base frame, a conveying mechanism, a visual inspection mechanism, and the aforementioned lifting and rotating mechanism; the conveying mechanism is disposed on the base frame and is used to convey the workpiece to be tested; the visual inspection mechanism is mounted above the conveying mechanism and is used to perform visual inspection on the workpiece to be tested conveyed by the conveying mechanism; the lifting and rotating mechanism is located below the conveying mechanism and is used to perform lifting and rotating operations on the workpiece to be tested conveyed by the conveying mechanism to adjust the position and posture of the workpiece to be tested on the conveying mechanism.

[0012] In conjunction with the second aspect, the conveying mechanism further includes a conveying frame, a tray capable of carrying the test piece along the conveying frame, and a tray travel control assembly; the tray travel control assembly includes a sensor and a stop cylinder signal-connected to the sensor, the sensor being used to sense the test piece carried on the tray, and the stop cylinder being used to continue to stop or release the tray according to the sensing of the sensor.

[0013] In conjunction with the second aspect, the tray is further connected to the rotating shaft via a rotating plate. The tray has a positioning hole, and the rotating plate has a positioning pin and a contact pin. The positioning pin is inserted into the positioning hole to fix the tray, and the contact pin contacts the bottom of the tray to provide support for the tray.

[0014] In conjunction with the second aspect, the lifting assembly of the lifting and rotating mechanism further includes a second mounting plate disposed on both sides of the electric cylinder. One side of the second mounting plate is connected to the first mounting plate, and the other side is provided with a guide rail and a slider slidably connected to the guide rail. The slider is fixed on a third support base, the electric cylinder is fixedly connected to the third support base through the third mounting plate, the third support base is fixed below the base frame, and the lifting and rotating mechanism is suspended below the base frame through the third support base.

[0015] In conjunction with the second aspect, the visual inspection mechanism further includes a fixed column, a sliding component disposed on the fixed column, and a scanner; the fixed column is placed on both sides of the conveying mechanism, and the scanner is capable of scanning the test piece conveyed by the conveying mechanism under the movement control of the sliding component.

[0016] Compared with the prior art, the beneficial effects achieved by this utility model are as follows:

[0017] 1. The lifting and rotating mechanism provided by this utility model, when the motor drives the rotating shaft to return to its position, the motor will stop rotating after completing the rotation angle. If the proximity switch detects that the rotating shaft has rotated to the correct position, it will send a signal to the controller to execute the next instruction. The configuration of the proximity switch improves the safety of the device operation.

[0018] 2. The visual inspection device provided by this utility model can perform lifting and rotation operations on the workpiece under test when the conveying mechanism transports it, thereby adjusting the position and posture of the workpiece under test on the conveying mechanism, so as to facilitate the visual inspection mechanism to scan the workpiece under test multiple times and reduce scanning blind spots; and through the cooperation of multiple mechanisms, the position and posture of the workpiece under test can be adjusted and flexible inspection can be achieved, which helps to improve the inspection efficiency of the device. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a structural schematic diagram of a lifting and rotating mechanism according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of a visual inspection device provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of a conveying frame provided in an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the structure of a tray provided in an embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of a lifting and rotating mechanism provided in an embodiment of the present invention.

[0025] In the diagram: 1 - Lifting and rotating mechanism;

[0026] 111-Electric cylinder; 112A-First mounting plate; 112B-Second mounting plate; 112C-Third mounting plate; 113A-First connector; 113B-Second connector; 114-Guide rail; 115-Slider; 116-Third support base;

[0027] 121-Motor; 122-Rotating shaft; 123-Proximity switch; 124-Reducer; 125-Coupling; 126A-First support; 126B-Second support; 127-Third connecting piece; 128-Sensing pin; 129-Rotating plate; 1291-Positioning pin; 1292-Contact pin;

[0028] 2-Base frame;

[0029] 3-Conveying mechanism; 31-Conveying frame; 32-Tray; 321-Positioning hole; 331-Sensor; 332-Stop cylinder;

[0030] 4-Visual inspection mechanism; 41-Fixed column; 42-Sliding component; 43-Scanner;

[0031] 5 - Item to be tested. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention. Example 1

[0033] This embodiment provides a lifting and rotating mechanism, see reference. Figure 1 and Figure 5The system includes a lifting assembly and a rotating assembly. The lifting assembly includes an electric cylinder 111 and a first mounting plate 112A. A first connecting member 113A is connected to the top of the lead screw of the electric cylinder 111, and the left side of the first connecting member 113A is connected to the first mounting plate 112A. When the electric cylinder 111 drives the lead screw to lift, the first connecting member 113A, connected to its output end, drives the first mounting plate 112A to perform the lifting action. A second connecting member 113B is mounted on the left side of the first mounting plate 112A and is sleeved on the rotating assembly. When the first mounting plate 112A lifts, the second connecting member 113B can drive the rotating assembly to lift along with the first mounting plate 112A.

[0034] The rotating assembly includes a motor 121 and a rotating shaft 122. The rotating shaft 122 is connected to the output end of the motor 121, and the motor 121 drives the rotating shaft 122 to rotate. Furthermore, the rotating assembly is equipped with a proximity switch 123. When the motor 121 stops rotating, the proximity switch 123 detects whether the rotating shaft 122 has rotated to the correct position. If it has, the proximity switch 123 sends a signal to the PLC control module (not shown in the figure) to continue executing the next instruction. If it has not rotated to the correct position, the proximity switch 123 will not send a signal, and the instruction cannot be executed. In this embodiment, the electric cylinder 111 can be a parallel electric cylinder to drive the lifting motion, and the motor 121 can be a servo motor to drive the rotational motion. In actual industrial manufacturing, the types are not limited to these; other types can also be used, as long as they can achieve their corresponding functions.

[0035] As one example, such as Figure 1 As shown, a reducer 124 is mounted above the motor 121. The second connecting piece 113B is sleeved on the outside of the reducer 124 to connect the lifting assembly and the rotating assembly. The end of the reducer 124 furthest from the motor is connected to the lower end of the rotating shaft 122 via a coupling 125 or a key. Alternatively, a key can be fixedly connected to the coupling 125 at the lower end of the rotating shaft 122 to achieve transmission. It should be noted that the output end of the motor 121 is connected to the input end of the reducer 124, and the output end of the reducer 124 is connected to the end of the rotating shaft 122 closest to the motor 121 via a coupling 125 and / or a key, thereby enabling the motor 121 to drive the rotating shaft 122 to rotate.

[0036] Above the second connector 113B, a first support 126A is sleeved on the outside of the coupling 125. A second support 126B is connected above the first support 126A. The end of the rotating shaft 122 near the motor 121 is inserted into the second support 126B through a bearing and can rotate relative to the second support 126B. In addition, an end cap is installed on the upper part of the second support 126B to protect the shaft end.

[0037] In this embodiment, the second support base 126B is further provided with a third connector 127 for mounting the proximity switch 123, and the rotating shaft 122 is further provided with a sensing pin 128 opposite to the proximity switch 123. When the motor 121 drives the rotating shaft 122 to rotate, the sensing pin 128 will rotate along with the rotating shaft 122. When the motor 121 drives the rotating shaft 122 to return to its original position, the motor 121 will stop rotating after completing the rotation angle, and the rotating shaft 122 and the sensing pin 128 will also stop. At this time, when the proximity switch 123 detects the sensing pin 128 within the sensing range, the proximity switch 123 will send a signal to the PLC control module to continue executing the next instruction; if the sensing pin 128 does not reach the sensing distance of the proximity switch 123 when rotating with the rotating shaft 122, the proximity switch 123 will not send a signal, and the instruction cannot continue to be executed, thereby realizing the verification of the rotation angle of the rotating shaft 122. In addition, a rotating plate 129 is connected to the end of the rotating shaft 122 away from the motor 121, which is used to support the test piece or workpiece.

[0038] It should be noted that the proximity switch 123 can be an inductive proximity sensor, and the sensing pin 128 can be made of metal. The proximity switch 123 uses the metal composition of the sensing pin 128 to detect the approach of a metal object by changing the electromagnetic field of the sensor. In practical applications, the proximity switch 123 and the sensing pin 128 can also be made of other devices or materials that can achieve the same function.

[0039] The lifting and rotating mechanism provided in this embodiment, driven by the electric cylinder of the lifting component, causes the rotating component to rise and fall together with the first mounting plate and the second connecting piece. When the rotating component motor drives the rotating shaft to stop rotating, a proximity switch and a corresponding sensing pin are provided. The proximity switch can detect the sensing pin within its sensing range by sending or not sending a signal to continue executing or interrupt the command, thereby realizing the function of detecting the rotating shaft to be rotated into place and improving the safety of the device operation. Example 2

[0040] This embodiment provides a visual inspection device, such as... Figure 2 As shown, it includes a base frame 2, a conveying mechanism 3 mounted on the base frame 2, a visual inspection mechanism 4 mounted above the conveying mechanism 3, and a lifting and rotating mechanism 1 as provided in Embodiment 1; wherein, the conveying mechanism 3 is used to convey the workpiece 5 to be tested, the visual inspection mechanism 4 is used to perform visual inspection on the workpiece 5 to be tested, and the lifting and rotating mechanism 1 is located below the conveying mechanism 3 and is used to lift and rotate the workpiece 5 to be tested in order to adjust the position and posture of the workpiece 5 on the conveying mechanism 3.

[0041] In some embodiments, such as Figure 3As shown, the conveying mechanism 3 includes two parallel conveying frames 31, a tray 32, and a tray movement control assembly that controls the movement of the tray 32. Supports are provided at one end and the middle of each conveying frame 31 to fix the conveying mechanism 3 to the base frame 2. The tray 32, carrying the test piece 5, is placed on the conveying frame 31 and moved from right to left by the conveying frame 31. The tray movement control assembly includes a sensor 331 located at the other end of the conveying frame 31, which sends a signal to the PLC control module when it senses that the tray 32 on the conveying frame 31 is carrying the test piece 5. The pallet travel control assembly also includes a stop cylinder 332 disposed inside the conveyor frame 31 and a pallet position detector disposed outside the transmission frame 31. The pallet position detector is used to detect when a pallet 32 ​​is being conveyed on the conveyor frame 31 and after the pallet 32 ​​reaches the pre-lifted designated position, it sends a signal to the PLC control module to continue executing the next instruction. The stop cylinder 332 is always in the stop state. When the pallet 32 ​​is not carrying the test piece 5, the PLC control module only controls the stop cylinder 332 to release the pallet 32 ​​according to the signal from the pallet position detector. When the pallet 32 ​​carries the test piece 5, the PLC control module controls the stop cylinder 332 to continue to stop the pallet 32 ​​according to the signals from the sensor 331 and the pallet position detector.

[0042] In this embodiment, sensor 331 is a reflective photoelectric sensor, which may include an infrared transmitter and an infrared receiver, respectively disposed on both sides of the conveying frame 31. When the tray 32 on the conveying frame 31 carries the test piece 5, part of the signal emitted by the transmitter is reflected by the test piece 5 and cannot be received by the receiver. The receiver sends a signal to the PLC control module based on the strength of the received signal. It should be noted that sensor 331 may also be an ultrasonic sensor, or a sensor with an integrated transmitter and receiver, or other sensors with the same detection function.

[0043] In this embodiment, reference Figure 4 and Figure 5 Each side of the tray 32 has a positioning hole 321 on its left side. The rotating plate 129 has a positioning pin 1291 that is inserted into the positioning hole 321 to fix the tray 32 for smooth lifting and rotation operations. The rotating plate 129 also has a contact pin 1292 that contacts the bottom of the tray 32 to provide support for the tray 32. When the tray 32 is stopped by the stop cylinder 332, the lifting and rotating mechanism 1 begins to lift, and the rotating plate 129 in the rotating assembly also rises together. When the rotating plate 129 rises to a certain height, the positioning pin 1291 and the contact pin 1292 connect the tray 32, and the tray 32, together with the fixed test piece 5, is lifted up.

[0044] Furthermore, a hole can be provided on the base frame 2 below the conveyor frame 31 to facilitate the lifting and rotation of the tray 32 by the rotating plate 129 passing through the hole. The tray 32 can be provided with a fixing member for mounting the test piece 5; the fixing member can be an octagonal prism with a hole in the center for mounting the test piece 5. In addition, a groove can be provided in front of the positioning hole 321 to allow the stop cylinder 332 to pass through, as shown in the reference. Figure 3 The stop cylinder 332 is located on the left side of the conveyor frame 31. Therefore, when the tray 32 moves from right to left, after the side with the groove on the left side of the tray 32 passes the stop cylinder 332, the other side will be stopped by the stop cylinder 332.

[0045] As an optional embodiment, such as Figure 5 As shown, the lifting assembly of the lifting and rotating mechanism 1 also includes second mounting plates 112B arranged parallel to both sides of the electric cylinder 111. One end of each second mounting plate 112B is connected to the first mounting plate 112A, and the other end is provided with a guide rail 114. A slider 115 is provided on the guide rail 114 and is slidably connected to the guide rail 114. The slider 115 is fixedly connected to the third support base 116, which is installed below the base frame 2. Therefore, when the electric cylinder 111 drives the first connecting member 113A to move, the slider 115 remains stationary, while the guide rail 114 moves up and down, thereby driving the rotating assembly to move up and down together. In addition, the electric cylinder 111 is also fixedly connected to the third support base 116 through the third mounting plate 112C, thereby fixing the lifting and rotating mechanism 1 and suspending it below the base frame 2.

[0046] In one embodiment, the visual inspection mechanism 4 includes fixed columns 41 placed on both sides of the conveying mechanism 3, sliding components 42, and two scanners 43. The sliding components 42 are mounted on the fixed columns 41 and include two parallel X-axis sliding components and a Y-axis sliding component connected between the two X-axis sliding components. The scanners 43, under the movement control of the sliding components 42, can scan the workpiece 5 conveyed on the conveying mechanism 3. The principle is that a cylindrical objective lens diffuses the laser light into a line laser, which is then projected onto the surface of the workpiece 5 to form diffuse reflection. The reflected light is then imaged on a CMOS sensor, and displacement and shape are measured by detecting changes in position and shape. Specifically, the visual inspection mechanism 4 can control the movement position of the scanners 43 through the X-axis and Y-axis sliding components, enabling the scanners 43 to scan workpieces 5 of different sizes.

[0047] The following is combined Figure 2 and Figure 5The working principle of the visual inspection device provided in this embodiment is explained as follows: The workpiece 5 to be tested is placed in the tray 32 and fixed, and then the tray 32 is placed on the conveying frame 31 so that it begins to be conveyed from left to right; when the tray 32 moves into the sensing range of the sensor 331, the sensor 331 sends a signal to the PLC control module through the intensity of the sensing signal; when the tray 32 moves to the pre-lifted designated position, the tray position detector sends a signal to the PLC control module to continue to execute the next instruction, and the PLC control module controls the stop cylinder 332 to continue to stop the tray 32 according to the signals of the sensor 331 and the tray position detector.

[0048] At this time, the PLC control module controls the lifting and rotating mechanism 1 to start lifting. The electric cylinder 111 drives the lead screw and the first connecting piece 113A to rise. The guide rail 114 moves upward through the slider 115. The first mounting plate 112A and the second mounting plate 112B also rise. The rotating assembly rises together through the second connecting piece 113B. When the rotating plate 129 rises to a certain height, the positioning pin 1291 is inserted into the positioning hole 321, and the contact pin 1292 contacts the bottom of the tray 32. The tray 32 and the fixed test piece 5 are lifted together to a certain height. Then, the visual inspection mechanism 4 drives the sliding assembly 42 to position the scanner 43 above the test piece 5 for the first scan inspection.

[0049] After the first scan is completed, the servo motor controller controls the motor 121 in the rotating assembly to work, which drives the rotating shaft 122 to rotate by a specified angle through the reducer 124 and coupling 125; the vision inspection mechanism 4 performs a second scan to eliminate scanning blind spots.

[0050] After the second scan is completed, when the rotating plate 129 and the tray 32 return to their initial state via the motor 121, the motor 121 will stop rotating after completing the rotation angle, and the rotating shaft 122 and the sensing pin 128 will also stop. At this time, when the proximity switch 123 detects the sensing pin 128 within its sensing range, the proximity switch 123 will send a signal to the PLC control module, thereby continuing to execute the next instruction. Then, the lifting assembly will place the tray 32 on the conveying frame 31, and the lifting and rotating mechanism 1 will descend to its original position. Finally, the PLC control module will control the stop cylinder 332 to release the tray 32, allowing it to continue moving to the right.

[0051] The visual inspection device provided in this embodiment uses a lifting and rotating mechanism to lift and rotate the workpiece under test, adjusting its position on the conveying mechanism. This facilitates a secondary scan of the workpiece by the visual inspection mechanism, filling in any missing areas from the first scan, reducing blind spots, and improving inspection efficiency. Furthermore, the lifting and rotating mechanism, equipped with a proximity switch, can detect when the rotating shaft has reached its designated position, enhancing operational safety. The visual inspection mechanism with a sliding component can move in multiple directions above the workpiece for scanning, adapting to workpieces of different sizes, offering strong versatility, and enabling flexible inspection. Besides its application in automated assembly inspection, such as detecting the quality and volume of adhesive application or the height and volume of solder joints, this embodiment can also be applied to other testing or measurement systems.

[0052] In the description of this utility model, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "near," "farthest," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0053] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0054] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A lifting and rotating mechanism, characterized in that, Includes lifting components and rotating components; The lifting assembly includes an electric cylinder (111) and a first mounting plate (112A). The output end of the electric cylinder (111) drives the first mounting plate (112A) to perform lifting and lowering actions through a first connector (113A). The rotating assembly includes a motor (121) and a rotating shaft (122) that is drivenly connected to the output end of the motor (121). The rotating assembly is equipped with a proximity switch (123) for sending a signal to continue executing the command after the motor (121) stops rotating and the rotating shaft (122) is detected to be in position. The first mounting plate (112A) is connected to the rotating assembly via the second connector (113B). When the first mounting plate (112A) performs a lifting action, the rotating assembly can follow the first mounting plate (112A) up and down under the drive of the second connector (113B).

2. The lifting and rotating mechanism according to claim 1, characterized in that, The output end of the motor (121) is connected to a reducer (124), and the output end of the reducer (124) is fixedly connected to the rotating shaft (122) via a coupling (125) and / or a key.

3. The lifting and rotating mechanism according to claim 2, characterized in that, The second connector (113B) is sleeved on the reducer (124); the coupling (125) is sleeved with a first support seat (126A), which is supported on the second connector (113B).

4. The lifting and rotating mechanism according to claim 3, characterized in that, The rotating shaft (122) is rotatably fitted with a second support (126B) at one end near the motor (121). The second support (126B) is supported on the first support (126A). The proximity switch (123) is mounted on the second support (126B) via a third connector (127). The rotating shaft (122) is provided with a sensing pin (128). When the sensing pin (128) rotates with the rotating shaft (122) to within the sensing distance of the proximity switch (123), the proximity switch (123) sends a signal to continue executing the command.

5. The lifting and rotating mechanism according to claim 1, characterized in that, A rotating plate (129) is connected to the end of the rotating shaft (122) away from the motor (121).

6. A visual inspection device, characterized in that, It includes a base frame (2), a conveying mechanism (3), a vision inspection mechanism (4), and a lifting and rotating mechanism (1) as described in any one of claims 1 to 5. The conveying mechanism (3) is mounted on the base frame (2) and is used to convey the test piece (5). The visual inspection mechanism (4) is mounted above the conveying mechanism (3) and is used to perform visual inspection on the test piece (5) conveyed by the conveying mechanism (3). The lifting and rotating mechanism (1) is located below the conveying mechanism (3) and is used to perform lifting and rotating operations on the test piece (5) conveyed by the conveying mechanism (3) to adjust the position of the test piece (5) on the conveying mechanism (3).

7. The visual inspection device according to claim 6, characterized in that, The conveying mechanism (3) includes a conveying frame (31), a tray (32) capable of carrying the test piece (5) along the conveying frame (31), and a tray travel control assembly. The pallet travel control assembly includes a sensor (331) and a stop cylinder (332) connected to the sensor (331) by a signal. The sensor (331) is used to sense the test piece (5) carried on the pallet (32), and the stop cylinder (332) is used to continue to stop or release the pallet (32) according to the sensing of the sensor (331).

8. The visual inspection device according to claim 7, characterized in that, The tray (32) is connected to the rotating shaft (122) via a rotating plate (129). The tray (32) is provided with a positioning hole (321), and the rotating plate (129) is provided with a positioning pin (1291) and a contact pin (1292). The positioning pin (1291) is inserted into the positioning hole (321) to fix the tray (32), and the contact pin (1292) contacts the bottom of the tray (32) to provide support for the tray (32).

9. The visual inspection device according to claim 6, characterized in that, The lifting assembly of the lifting and rotating mechanism (1) further includes a second mounting plate (112B) disposed on both sides of the electric cylinder (111). One side of the second mounting plate (112B) is connected to the first mounting plate (112A), and the other side is provided with a guide rail (114) and a slider (115) slidably connected to the guide rail (114). The slider (115) is fixed on the third support base (116), the electric cylinder (111) is fixedly connected to the third support base (116) through the third mounting plate (112C), the third support base (116) is fixed below the base frame (2), and the lifting and rotating mechanism (1) is suspended below the base frame (2) through the third support base (116).

10. The visual inspection device according to claim 6, characterized in that, The visual inspection mechanism (4) includes a fixed column (41), a sliding component (42) disposed on the fixed column (41), and a scanner (43). The fixed column (41) is placed on both sides of the conveying mechanism (3), and the scanner (43) can scan the test piece (5) conveyed by the conveying mechanism (3) under the movement control of the sliding component (42).

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