Workpiece automatic remodeling image acquisition and detection device

Abstract

The automatic workpiece remodeling image collecting and detecting device comprises a material distributing roller, and a material distributing notch is formed in the outer side face of the material distributing roller; the detection mechanism comprises a first detection shaft and a second detection shaft, and a workpiece in the material distribution notch rolls between the first detection shaft and the second detection shaft when rotating to fall off from the material distribution notch; the first detection shaft moves horizontally to change the distance between the first detection shaft and the second detection shaft; the image acquisition mechanism is arranged on the bracket and comprises an image acquisition head; the image acquisition head is used for acquiring surface information of a workpiece; and the controller controls the first detection shaft and the image acquisition head to move horizontally according to the received rod diameter information of the workpiece. According to the invention, the adjustment accuracy is improved, the gray levels of different workpiece images acquired by the image acquisition head are ensured to be consistent, the writing difficulty of a detection program is reduced, the possibility that one set of detection program is compatible with various rod diameters is provided, the adjustment time is shortened, the feeding continuity is ensured, and the utilization rate is improved.

Description

Technical Field

[0001] This application relates to the field of workpiece inspection technology, and in particular to an automatic workpiece changeover image acquisition and inspection device. Background Technology

[0002] With the development of industrial automation, machine vision inspection technology has gradually replaced manual inspection due to its advantages such as high inspection precision, high accuracy, high automation, high production efficiency, and low defect rate. Machine vision inspection technology mainly uses a camera to acquire images of the workpiece surface, and then transmits the acquired images to image processing equipment for processing to determine whether the product has defects.

[0003] Detecting surface defects in round bars requires image acquisition using a line scan camera. However, line scan imaging systems typically have a small depth of field. When the workpiece diameter varies, the position of the image acquisition point and the angles of incidence from multiple light sources also change, resulting in significant variations in image grayscale. This makes it impossible to obtain images with consistent grayscale, rendering the inspection program unsuitable for workpieces of various diameters. Furthermore, line scan camera acquisition systems are highly precise, requiring simultaneous alignment of the camera, light source, and workpiece. Even slight positional changes can produce substantial image differences. Therefore, manual repositioning incurs significant time and risk costs, and the adjustment position is susceptible to subjective influence, making precise adjustments difficult. Additionally, the inspection system employs a simultaneous workpiece reception and inspection approach. When workpiece supply is discontinuous, the inspection system must wait or pause, resulting in low uptime. Utility Model Content

[0004] The purpose of this application is to provide an automatic workpiece changing image acquisition and detection device, which improves the accuracy of adjustment, ensures that the grayscale of different workpiece images acquired by the image acquisition head remains consistent, reduces the difficulty of writing the detection program, makes it possible for a single detection program to be compatible with multiple rod diameters, shortens the adjustment time, ensures the continuity of material supply, and improves the utilization rate.

[0005] This application provides an automatic workpiece changing image acquisition and detection device, comprising: a material distribution mechanism, including an adjustable and rotatable material distribution roller, the outer side of which has a material distribution slot extending along a first direction; when the material distribution slot rotates to the workpiece's infeed direction, the workpiece enters the material distribution slot and rotates with the material distribution roller, the first direction being the extension direction of the rotation axis of the material distribution roller; and a detection mechanism, including a first detection shaft and a second detection shaft arranged parallel to the first direction, wherein when a workpiece located in the material distribution slot rotates to the point of falling out of the material distribution slot, it rolls between the first detection shaft and the second detection shaft; Both the first and second detection axes are rotatable to drive the workpiece located between the first and second detection axes to rotate. The first detection axis moves horizontally in a direction perpendicular to the first direction to change the distance between it and the second detection axis. An image acquisition mechanism is mounted on a support and includes an image acquisition head. The image acquisition head is horizontally movable in a direction perpendicular to the first direction and is used to acquire surface information of the workpiece when it rotates between the first and second detection axes. A controller controls the horizontal movement of the first detection axis and the image acquisition head based on the received workpiece rod diameter information.

[0006] Optionally, the detection mechanism includes a base plate mounted on the bracket, a movable drive component and a traction rod drivenly connected to the movable drive component are mounted on the base plate, the two ends of the traction rod are respectively fixed on a first mounting seat and a second mounting seat, and the two ends of the first detection shaft are respectively rotatably mounted on the first mounting seat and the second mounting seat.

[0007] Optionally, the substrate is provided with a first guide rail and a second guide rail, a first slider is mounted on the first mounting base and can be slidably disposed along the first guide rail, and a second slider is mounted on the second mounting base and can be slidably disposed along the second guide rail.

[0008] Optionally, a first motor is mounted on the first mounting base, and the output shaft of the first motor is drivenly connected to the first detection shaft.

[0009] Optionally, the moving drive component includes a base plate and a drive cylinder mounted on the base plate. A telescopic rod is provided on the drive cylinder, a push plate is connected to the telescopic rod, a traction block is mounted on the push plate, and the traction rod is fixed on the traction block.

[0010] Optionally, a third mounting base and a fourth mounting base are also mounted on the substrate, the second detection shaft is rotatably connected to the third mounting base and the fourth mounting base, a second motor is mounted on the fourth mounting base, and the output shaft of the second motor is drivenly connected to the second detection shaft.

[0011] Optionally, the material dispensing mechanism further includes a mounting frame and a platform fixed on the bracket. The platform is rotatably connected to the mounting frame with a first direction as the rotation center. Both ends of the material dispensing roller are rotatably connected to the mounting frame. The edge of the platform for dispensing material is in contact with the side of the material dispensing roller to feed material to the material dispensing roller.

[0012] Optionally, a first sensor and a second sensor are mounted on the mounting frame. The detection port of the first sensor faces the junction between the edge of the platform and the side of the distributing roller, and the detection port of the second sensor faces the distributing groove of the distributing roller.

[0013] Optionally, at least one of the third mounting base and the fourth mounting base is equipped with a third sensor, the detection head of the third sensor facing between the first detection axis and the second detection axis, and the third sensor is communicatively connected to the controller of the first motor and the controller of the second motor.

[0014] Optionally, the bracket includes a top plate and a mounting plate disposed opposite each other, a support column connected between the top plate and the mounting plate, the image acquisition mechanism being connected to the top plate, and a light source assembly being mounted on the support column, the illumination light emitted by the light source assembly being directed toward the portion between the first detection axis and the second detection axis.

[0015] The above technical solution has the following beneficial effects:

[0016] The automatic workpiece changing image acquisition and inspection device provided in this application allows the controller to automatically adjust the horizontal position of the first detection axis and the image acquisition head according to changes in the workpiece rod diameter. Compared to manual adjustment, this improves the accuracy of the adjustment, ensures consistent grayscale in different workpiece images acquired by the image acquisition head, reduces the difficulty of writing the inspection program, and makes it possible for a single inspection program to be compatible with multiple rod diameters, thus shortening the adjustment time. Simultaneously, by opening a distribution groove on the outer side of the distribution roller, the distribution groove can temporarily store and buffer workpieces, ensuring the continuity of workpiece supply between the first and second detection axes and improving the utilization rate. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of an automatic workpiece changing image acquisition and detection device in one embodiment of this application.

[0018] Figure 2 This is a schematic diagram of the image acquisition head acquiring workpiece information on the first and second detection axes in an embodiment of this application.

[0019] Figure 3 This is a schematic diagram of the structure of the bracket in one embodiment of this application.

[0020] Figure 4 This is a perspective view of the dispensing mechanism in one embodiment of this application.

[0021] Figure 5 This is a perspective view of the testing mechanism in one embodiment of this application.

[0022] Figure 6 This is a side sectional view of the material distribution structure in one embodiment of this application.

[0023] Figure 7 This is a schematic diagram of the structure of an image acquisition device in one embodiment of this application.

[0024] Attached icon number

[0025] 1-Distribution mechanism, 10-Distribution roller, 100-Distribution shaft, 101-Second coupling, 102-Second rotary actuator, 103-Second bearing with seat, 11-Distribution slot, 110-Feeding area, 12-Mounting frame, 120-First sensor, 121-Second sensor, 122-First support plate, 123-First rotary actuator, 124-First bearing with seat, 125-First coupling, 126-First positioning plate, 127-Second support plate, 13-Platform, 130-Rotating shaft, 131-Workpiece channel.

[0026] 2-Detection mechanism, 20-First detection axis, 21-Second detection axis, 22-Base plate, 220-First guide rail, 221-Second guide rail, 23-Moving drive component, 230-Base plate, 231-Drive cylinder, 232-Push plate, 233-Traction block, 24-Traction rod, 240-First mounting seat, 241-Second mounting seat, 242-First motor, 25-Fourth mounting seat, 250-Second motor.

[0027] 3-Image acquisition mechanism, 30-Image acquisition head, 31-Mounting side plate, 32-Connecting plate, 33-Slide plate, 34-Second positioning plate, 35-Sliding drive component.

[0028] 4-Bracket, 40-Top plate, 41-Mounting plate, 42-Column, 420-Mounting rod, 421-Fixing block, 43-Sunshade, 430-Mounting screw.

[0029] 5-Workpiece. Detailed Implementation

[0030] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0031] It is readily understood that, based on the technical solution of this utility model, various structural and implementation methods can be interchanged by those skilled in the art without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0032] The directional terms such as up, down, left, right, front, back, front, back, top, and bottom mentioned or possibly used in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may therefore vary depending on their location and usage. Therefore, these or other directional terms should not be interpreted as restrictive.

[0033] like Figures 1 to 6 As shown, this application provides an automatic workpiece changeover image acquisition and detection device, including: a material distribution mechanism 1, a detection mechanism 2, an image acquisition mechanism 3, and a controller.

[0034] The material distribution mechanism 1 includes an adjustable and rotatable material distribution roller 10. The outer side of the material distribution roller 10 is provided with a material distribution slot 11. The material distribution slot 11 extends along a first direction. When the material distribution slot 11 is rotated to the material receiving direction of the workpiece 5, the workpiece 5 enters the material distribution slot 11 and rotates with the material distribution roller 10. The first direction is the extension direction of the rotation axis of the material distribution roller 10. The material distribution roller 10 can rotate under the drive of a motor or other driving device.

[0035] The detection mechanism 2 includes a first detection shaft 20 and a second detection shaft 21 arranged parallel to a first direction. When the workpiece 5 located in the material distribution slot 11 rotates and falls out of the material distribution slot 11, it rolls down between the first detection shaft 20 and the second detection shaft 21. Both the first detection shaft 20 and the second detection shaft 21 can rotate to drive the workpiece 5 located between the first detection shaft 20 and the second detection shaft 21 to rotate. The first detection shaft 20 moves horizontally in a direction perpendicular to the first direction to change the distance between it and the second detection shaft 21.

[0036] In one optional embodiment of the relative positions of the material distribution mechanism 1 and the detection mechanism 2, the portion between the first detection shaft 20 and the second detection shaft 21 is located below the material discharge side of the material distribution roller 10. Specifically, taking the portion between the first detection shaft 20 and the second detection shaft 21 located obliquely below the material distribution groove 11 when the material distribution groove 11 of the material distribution roller 10 rotates to the horizontal direction as a reference, when the material distribution groove 11 rotates further downward, under the action of the guide inclined plate between the material distribution groove 11 and the first detection shaft 20 and the second detection shaft 21, the workpiece 5 rolls from the material distribution groove 11 into the space between the first detection shaft 20 and the second detection shaft 21.

[0037] Specifically, the guide ramp is located on the discharge side of the distributing roller 10 and extends above the apex of the second detection shaft 21 so that the workpiece can enter between the two shafts and avoid the image acquisition point. The minimum distance between the guide ramp and the roller surface of the distributing roller 10 is less than the radius of the workpiece 5 and is consistent with the extension direction of the groove wall of the distributing groove 11 when the workpiece 5 rolls down in the distributing groove 11, so as to smoothly guide the workpiece 5 in the distributing groove 11 to the space between the first detection shaft 20 and the second detection shaft 21.

[0038] In an optional embodiment, there may be multiple material distribution slots 11, which are evenly distributed along the circumference of the material distribution roller 10.

[0039] like Figure 4 As shown, the two ends of the platform 13 are mounted on the mounting frame 12 via rotating shafts 130. The mounting frame 12 also has a first positioning plate 126 and a first support plate 122 mounted opposite each other. A rotary actuator 123 is mounted on the first support plate 122, which can swing a cylinder or motor, etc. The portion of the first positioning plate 126 through which the rotating shaft 130 passes is also equipped with a first seated bearing 124. After passing through the first seated bearing 124, the rotating shaft 130 is connected to the output end of the first rotary actuator 123 via a first coupling 125.

[0040] In an optional embodiment where the distributing roller 10 is rotated, the end of the distributing roller 10 is provided with a distributing shaft 100. The distributing shaft 100 is driven to rotate by the output end of the second rotating actuator 102 located on one side of the first positioning plate 126 via a second coupling 101. The second rotating actuator 102 is mounted on the mounting frame 12 via a second support plate 127. A second seated bearing 103 is mounted on the second support plate 127. The output end of the second rotating actuator 102 passes through the second seated bearing 103.

[0041] The material distribution shaft 100 is rotatably mounted on another first positioning plate 126 via a material distribution bearing. After passing through the workpiece channel 131 on the platform 13, the workpiece 5 to be inspected enters the material distribution slot 11. Driven by the rotation of the material distribution roller 10, multiple material distribution slots 11 sequentially receive the workpiece 5 to be inspected on the platform 13 and transport the workpiece 5 to be inspected to the next station.

[0042] The first detection shaft 20 can move horizontally in a direction perpendicular to the first direction under the drive of components such as a lead screw assembly, a cylinder, or a hydraulic cylinder. The first detection shaft 20 and the second detection shaft 21 can rotate under the drive of a motor or other driving device.

[0043] The image acquisition mechanism 3 is mounted on the support 4 and includes an image acquisition head 30, which is horizontally movable in a direction perpendicular to the first direction, such as... Figure 2 As shown, the image acquisition head 30 is oriented between the first detection axis 20 and the second detection axis 21, and is used to acquire surface information of the workpiece 5 when it rotates between the first detection axis 20 and the second detection axis 21.

[0044] The image acquisition head 30 can move horizontally in a direction perpendicular to the first direction under the drive of components such as a lead screw assembly, a cylinder, or a hydraulic cylinder.

[0045] In one specific implementation, such as Figure 7 As shown, the image acquisition head 30 is a camera. Mounting side plates 31 are installed on both sides of the camera. A connecting plate 32 is located on the top of the mounting side plates 31, and a sliding plate 33 is located on the top of the connecting plate 32. The image acquisition mechanism 3 is fixedly mounted on the bracket 4 via a second positioning plate 34. A sliding drive component 35, such as a lead screw assembly or an electric cylinder, is provided on the second positioning plate 34. The output end of the sliding drive component 35 is equipped with a sliding plate 33, which slides on the second positioning plate 34.

[0046] When the diameter of the workpiece 5 rod changes, the new workpiece 5 rod diameter value is input into the controller. The controller controls the drive components of the image acquisition head 30 and the first detection axis 20 according to the preset distance value, causing the image acquisition head 30 and the first detection axis 20 to move along the respective distances. Figure 2 The workpiece 5 is moved in the same direction as indicated by arrows A and B to accommodate the change in rod diameter.

[0047] Furthermore, in an optional embodiment, the driving components of the image acquisition head 30 and the driving components of the first detection axis 20 can be controlled relatively independently.

[0048] In alternative implementations, such as Figure 2 As shown, in the initial position, the horizontal position of the image acquisition head 30 is set as the first origin, and the horizontal position of the first detection axis 20 is set as the second origin. Both the first and second origins are located to the right or left of the central axis of the second detection axis 21. The horizontal distance between the first origin and the central axis of the second detection axis 21 is set to 10.5 mm, and the horizontal distance between the second origin and the central axis of the second detection axis 21 is set to 55.5 mm. Simultaneously, the direction in which the image acquisition head 30 moves horizontally away from the second detection axis 21 is set as the positive direction, and the direction in which the first detection axis 20 moves horizontally towards the second detection axis 21 is set as the positive direction.

[0049] When inspecting workpieces 5 with different rod diameters, the distances that the image acquisition head 30 and the first detection axis 20 move from the first origin and the second origin in their respective positive directions are shown in the table below.

[0050]

[0051] In one optional implementation of the automatic workpiece changeover image acquisition and inspection device, the workpiece 5, as incoming material, enters the distribution slot 11 through its opening. The distribution shaft 100 begins to rotate clockwise, and when the distribution slot 11 tilts downwards, the workpiece 5 inside the distribution slot 11 is discharged from the distribution slot 11 under gravity and rolls down between the first detection shaft 20 and the second detection shaft 21. The first detection shaft 20 and the second detection shaft 21 rotate simultaneously to drive the workpiece 5 to rotate. The image acquisition head 30 of the image acquisition mechanism 3 acquires the outer surface information of the workpiece 5 during its rotation. After acquisition, the first detection shaft 20 moves horizontally outward in a direction perpendicular to the first direction to increase the distance between it and the second detection shaft 21, causing the workpiece 5 to roll down and be discharged between the first detection shaft 20 and the second detection shaft 21. A diversion station can be arranged on the discharge side to divert workpieces 5 that are judged to be qualified or unqualified after image acquisition.

[0052] The workpiece automatic changeover image acquisition and detection device provided in this application embodiment allows the controller to automatically adjust the horizontal position of the first detection axis 20 and the image acquisition head 30 according to the change in the rod diameter of the workpiece 5. Compared with manual adjustment, this improves the accuracy of adjustment, shortens the adjustment time, ensures that the grayscale of the images of different workpieces 5 acquired by the image acquisition head 30 remains consistent, reduces the difficulty of writing the detection program, and makes it possible for a single detection program to be compatible with multiple rod diameters. Simultaneously, by opening a distribution groove 11 on the outer side of the distribution roller 10, the distribution groove 11 can temporarily store and buffer the workpiece 5, ensuring the continuity of workpiece 5 supply between the first detection axis 20 and the second detection axis 21, and improving the utilization rate.

[0053] Compared to common solutions that involve moving a camera or image acquisition stage vertically to detect workpieces with different rod diameters, this technical solution uses a horizontally moving detection structure instead of a vertically moving one. For objects of the same mass, the energy required for horizontal movement is far less than that required for vertical movement, thus making it more efficient and energy-saving. When changing the rod diameter of a workpiece, only the first detection axis 20 and the image acquisition mechanism 3 need to be moved horizontally; there is no need to drag the detection mechanism or image acquisition mechanism vertically. Horizontal movement replaces vertical movement, significantly reducing energy consumption for shape change adjustments, making it more energy-efficient. After image acquisition, by increasing the center distance between the first detection axis 20 and the second detection axis 21, the workpiece can be discharged from its original position by its own weight. Compared to the existing technology that adds an additional pushing mechanism to move the workpiece axially along the detection axis out of the detection area, this reduces the discharge distance of the detection mechanism 2 and the uneven wear on the first and second detection axes 20 and 21, reducing energy consumption and improving image acquisition efficiency and stability. Furthermore, this technical solution eliminates the need for additional gripping mechanisms (such as robots or robotic arms), reducing the complexity and energy consumption of the mechanism, making the entire detection device more compact and lower in cost.

[0054] In an optional embodiment, the detection mechanism 2 includes a base plate 22 mounted on the bracket 4. A movable drive component 23 and a traction rod 24 driven and connected to the movable drive component 23 are mounted on the base plate 22. The two ends of the traction rod 24 are respectively fixed to a first mounting base 240 and a second mounting base 241. The two ends of the first detection shaft 20 are rotatably mounted on the first mounting base 240 and the second mounting base 241, respectively. Figure 5 As shown, when the moving drive 23 drives the traction rod 24 to move horizontally, the first mounting base 240 and the second mounting base 241 move accordingly, thereby driving the first detection shaft 20 mounted on it to move horizontally, which is stable and reliable.

[0055] In an optional embodiment, the substrate 22 is provided with a first guide rail 220 and a second guide rail 221. The first mounting base 240 is provided with a first sliding groove that is slidably disposed along the first guide rail 220, and the second mounting base 241 is provided with a second sliding groove that is slidably disposed along the second guide rail 221. Please refer to... Figure 5 The first guide rail 220 is adapted to the first slide groove to limit and guide the first mounting base 240 when it slides. The second guide rail 221 is adapted to the second slide groove to limit and guide the second mounting base 241 when it slides.

[0056] In an optional embodiment, a first motor 242 is mounted on the first mounting base 240, and the output shaft of the first motor 242 is drivenly connected to the first detection shaft 20. For example... Figure 5 As shown, the output shaft of the first motor 242 passes through the first mounting base 240 and is driven to connect to the first detection shaft 20, thereby driving the first detection shaft 20 to rotate. The first motor 242 can be a servo motor, or it can be configured as other types of drive components according to control requirements.

[0057] In an optional embodiment, the moving drive component 23 includes a base plate 230 and a drive cylinder 231 mounted on the base plate 230. A telescopic rod is provided on the drive cylinder 231, a push plate 232 is connected to the telescopic rod, a traction block 233 is mounted on the push plate 232, and a traction rod 24 is fixed to the traction block 233. Figure 5 As shown, the push plate 232 extends along the length direction of the first detection shaft 20 and two traction blocks 233 are provided in the length direction. The traction blocks 233 are provided with traction holes. The traction rod 24 passes through the two traction holes to be fixed with the two traction blocks 233. The traction blocks 233 drive the traction rod 24 to move horizontally.

[0058] In an optional embodiment, a third mounting base and a fourth mounting base 25 are further mounted on the substrate 22. The second detection shaft 21 is rotatably connected to the third mounting base and the fourth mounting base 25. A second motor 250 is mounted on the fourth mounting base 25, and the output shaft of the second motor 250 is drivenly connected to the second detection shaft 21. Figure 5 As shown, the output shaft of the second motor 250 passes through the fourth mounting base 25 and is driven to the end of the second detection shaft 21. The second motor 250 can be a servo motor or other drive components as needed for control.

[0059] In an optional embodiment, the material dispensing mechanism 1 further includes a mounting frame 12 and a platform 13 fixed to the bracket 4. The platform 13 is rotatably connected to the mounting frame 12 about a first direction as its rotation center. Both ends of the dispensing roller 10 are rotatably connected to the mounting frame 12. The edge of the platform 13 for discharging material is in contact with the side of the dispensing roller 10 to feed material to the dispensing roller 10. Figure 4 As shown, the platform 13 serves as a transitional connection, receiving the workpiece 5 from the previous process (such as the length detection process). It is positioned so that its edge is either directly opposite the side of the distributing roller 10 or has a small gap, allowing the workpiece 5 to roll into the distributing groove 11 when the distributing roller 10 rotates to face the edge of the platform 13. When a workpiece 5 is not parallel to the axis of the distributing roller 10, it stops rolling and remains stationary due to its poor posture. The platform 13 rotates and oscillates to adjust the posture of the workpiece 5, quickly aligning it parallel to the axis of the distributing roller 10 and allowing it to enter the distributing groove 11. Furthermore, the slight collision and vibration between the workpiece 5 and the platform 13 during rotation also alters the position of the workpiece 5.

[0060] In an optional embodiment of the platform 13, the top surface of the platform 13 is inclined, that is, the edge of the incoming material is higher than the edge of the outgoing material, so that the workpiece 5 can quickly enter the material distribution slot 11 under its own gravity under the guidance of the top surface.

[0061] In an optional embodiment, a first sensor 120 and a second sensor 121 are mounted on the mounting bracket 12. The detection port of the first sensor 120 faces the junction between the edge of the platform 13 and the side of the distributing roller 10, and the detection port of the second sensor 121 faces the distributing groove 11 of the distributing roller 10. Figure 4 and Figure 6As shown, when workpiece 5 enters the docking point between the edge of the platform 13 and the side of the distributing roller 10, the first sensor 120 detects workpiece 5 and transmits the incoming material information to the rotation controller of the distributing roller 10, controlling the distributing roller 10 to rotate and receive workpiece 5. Similarly, when workpiece 5 enters the distributing slot 11 and rotates to the position of the second sensor 121, the second sensor 121 senses workpiece 5 in the distributing slot 11 and begins to transmit the storage signal to the controller. The controller controls the first detection shaft 20 to return to the positioning point so that when the distributing roller 10 rotates to the point where workpiece 5 rolls off, it can receive workpiece 5 through the first detection shaft 20 and the second detection shaft 21. When the second sensor 121 does not detect a workpiece, the distributing roller 10 will continue to rotate to quickly store workpiece 5 on the platform 13 through the distributing slot 11 and transport it to the waiting area 110 (the distributing slot 11 is located on the side of the first detection shaft 20 and the second detection shaft 21 and forms an acute angle with the horizontal direction) for waiting.

[0062] In addition, the detection control mechanism of the second sensor 121 is linked with the rotation control mechanism of the distributing roller 10. When the rotation control mechanism controls the distributing groove 11 of the distributing roller 10 to rotate to the position of the second sensor 121, the second sensor 121 begins to detect.

[0063] At least one of the third mounting base and the fourth mounting base 25 is equipped with a third sensor. The detection head of the third sensor faces between the first detection shaft 20 and the second detection shaft 21. The third sensor is communicatively connected to the controller of the first motor 242 and the controller of the second motor 250. When the third sensor detects that the workpiece 5 has entered between the first detection shaft 20 and the second detection shaft 21, it transmits a signal to the controller of the first motor 242 and the controller of the second motor 250 to control the rotation of the first detection shaft 20 and the second detection shaft 21.

[0064] The first sensor 120, the second sensor 121, and the third sensor can all be a pair of through-beam photoelectric sensors, respectively installed at both ends of the corresponding mounting base, with one end emitting light and the other end receiving light. When a workpiece 5 enters between the pair of through-beam photoelectric sensors, the amount of light received by the receiving end will decrease or even disappear, thereby triggering the sensor to identify the incoming material.

[0065] In an optional embodiment, the bracket 4 includes a top plate 40 and a mounting plate 41 disposed opposite to each other, and a support column 42 connecting the top plate 40 and the mounting plate 41. Multiple light source assemblies at different distances from the mounting plate 41 are mounted on the support column 42, and the illumination light emitted by the light source assemblies is directed towards the area between the first detection axis 20 and the second detection axis 21. Figure 3As shown, the support column 42 serves to support the top plate 40 and the mounting plate 41. When the workpiece 5 rolls between the first detection shaft 20 and the second detection shaft 21, the illumination light emitted by the light source assembly shines on the workpiece 5, which makes it easier for the image acquisition mechanism 3 to better acquire the surface information of the workpiece 5.

[0066] like Figure 3 As shown, light shields 43 are installed on the openings of the top plate 40 and the mounting plate 41, and are fastened by mounting screws 430 respectively. The bracket 4 is a rectangular bracket. A mounting rod 420 is connected between two opposing pillars 42 inside the rectangular bracket. The two ends of the mounting rod 420 are respectively fitted into the fixing blocks 421 of the two side pillars 42 and locked by bolts on the fixing blocks 421. The light source assembly can be installed on the mounting rod 420 by snap-fit, bolt connection or other means. The side of the bracket 4 is provided with a detection protection plate, a detection protection door and other components.

[0067] Furthermore, the light source assembly's activation controller, the first detection axis 20's rotation controller, the second detection axis 21's rotation controller, and the image acquisition mechanism 3's controller can be integrated into a single controller. When the third sensor detects the workpiece 5, it sends a detection signal. After receiving the detection signal, the single controller controls the first detection axis 20 and the second detection axis 21 to start rotating, controls the light source assembly to activate, and controls the image acquisition mechanism 3 to acquire images of the workpiece 5. The entire process is automated, energy-saving, and highly efficient.

[0068] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0069] The above are merely the principles and preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several other modifications can be made based on the principles of this utility model, and these modifications should also be considered within the scope of protection of this utility model.

Claims

1. A workpiece automatic changeover image acquisition and detection device, characterized in that, include: The material dispensing mechanism includes an adjustable and rotatable dispensing roller. A dispensing groove is provided on the outer side of the dispensing roller. The dispensing groove extends along a first direction. When the dispensing groove is rotated to the material receiving direction of the workpiece, the workpiece enters the dispensing groove and rotates with the dispensing roller. The first direction is the extension direction of the rotation axis of the dispensing roller. The detection mechanism includes a first detection shaft and a second detection shaft arranged parallel to each other along a first direction. When a workpiece located in the material distribution slot rotates and falls out of the material distribution slot, it rolls between the first detection shaft and the second detection shaft. Both the first detection axis and the second detection axis can rotate to drive the workpiece located between the first detection axis and the second detection axis to rotate. The first detection axis moves horizontally in a direction perpendicular to the first direction to change the distance between it and the second detection axis. An image acquisition mechanism is mounted on a support and includes an image acquisition head. The image acquisition head is horizontally movable along a direction perpendicular to a first direction. The image acquisition head is used to acquire surface information of a workpiece when it rotates between a first detection axis and a second detection axis. The controller controls the horizontal movement of the first detection axis and the image acquisition head based on the received workpiece rod diameter information.

2. The workpiece automatic changeover image acquisition and detection device according to claim 1, characterized in that, The detection mechanism includes a base plate mounted on the bracket, a movable drive component and a traction rod driven by the movable drive component are mounted on the base plate, the two ends of the traction rod are respectively fixed on a first mounting base and a second mounting base, and the two ends of the first detection shaft are respectively rotatably mounted on the first mounting base and the second mounting base.

3. The workpiece automatic changeover image acquisition and detection device according to claim 2, characterized in that, The substrate is provided with a first guide rail and a second guide rail. A first slider is mounted on the first mounting base and can slide along the first guide rail. A second slider is mounted on the second mounting base and can slide along the second guide rail.

4. The workpiece automatic changeover image acquisition and detection device according to claim 2, characterized in that, A first motor is mounted on the first mounting base, and the output shaft of the first motor is drivenly connected to the first detection shaft.

5. The workpiece automatic changeover image acquisition and detection device according to claim 2, characterized in that, The moving drive component includes a base plate and a drive cylinder mounted on the base plate. A telescopic rod is provided on the drive cylinder, a push plate is connected to the telescopic rod, a traction block is mounted on the push plate, and the traction rod is fixed on the traction block.

6. The workpiece automatic changeover image acquisition and detection device according to claim 4, characterized in that, The substrate is also equipped with a third mounting base and a fourth mounting base. The second detection shaft is rotatably connected to the third mounting base and the fourth mounting base. The fourth mounting base is equipped with a second motor, and the output shaft of the second motor is drivenly connected to the second detection shaft.

7. The workpiece automatic changeover image acquisition and detection device according to claim 6, characterized in that, The material distribution mechanism further includes a mounting frame and a platform fixed on the bracket. The platform is rotatably connected to the mounting frame with a first direction as the rotation center. Both ends of the material distribution roller are rotatably connected to the mounting frame. The edge of the platform for discharging material is in contact with the side of the material distribution roller to feed material to the material distribution roller.

8. The workpiece automatic changeover image acquisition and detection device according to claim 7, characterized in that, The mounting bracket is equipped with a first sensor and a second sensor. The detection port of the first sensor faces the junction between the edge of the platform and the side of the distributing roller, and the detection port of the second sensor faces the distributing groove of the distributing roller.

9. The workpiece automatic changeover image acquisition and detection device according to claim 6, characterized in that, At least one of the third mounting base and the fourth mounting base is equipped with a third sensor. The detection head of the third sensor faces between the first detection axis and the second detection axis. The third sensor is communicatively connected to the controller of the first motor and the controller of the second motor.

10. The workpiece automatic changeover image acquisition and detection device according to claim 4, characterized in that, The bracket includes a top plate and a mounting plate arranged opposite each other, a support column connected between the top plate and the mounting plate, an image acquisition mechanism connected to the top plate, and a light source assembly mounted on the support column. The illumination light emitted by the light source assembly is directed toward the portion between the first detection axis and the second detection axis.

Images