Automatic pancake detection device

Abstract

The invention discloses an automatic pancake detection device which comprises a main cabinet body for bearing the whole device, a transmission support is arranged on the main cabinet body, a multi-camera visual detection system is arranged on the transmission support, and the multi-camera visual detection system is composed of a front camera, a rear camera, a left camera, a right camera and a top camera. A multi-camera visual detection system is arranged on the front side of the machine body, a first rejecting module is arranged on the rear side of the multi-camera visual detection system, a pancake bottom surface detection device is arranged on the rear side of the first rejecting module, and a second rejecting module is arranged on the rear side of the pancake bottom surface detection device. And the bottom surface of the flour cake can be detected on the premise that the flour cake does not need to be turned over, so that the integrity of the flour cake is ensured.

Description

Technical Field

[0001] This invention relates to the field of food testing technology, and in particular to an automatic dough cake testing device. Background Technology

[0002] Instant noodles are a type of ready-to-eat convenience food. During the production process, they are deep-fried, inevitably leading to blackening and charring. This affects the taste and appearance of the noodles and does not meet food safety requirements. Therefore, noodles with blackening or charring defects are considered substandard and are discarded on the instant noodle production line. Traditional inspection methods rely on manual observation on the production line, which is not only inefficient but also prone to overlooking small areas of blackening or charring, thus affecting the overall pass rate of the finished instant noodles.

[0003] Currently, there are some inspection devices on the market that use visual inspection technology to detect defects on the surface of dough, such as the one described in Chinese Patent Publication No. CN211505260U. However, this inspection device can only inspect the top surface of the dough. It cannot inspect the bottom surface of the dough, or it is necessary to flip the dough over to inspect it. This not only requires additional equipment and procedures to complete the inspection, increasing the inspection cost, but also, unlike other products, dough is fragile. If it is not flipped properly, it is easy to cause the dough to break, crumble, or be damaged.

[0004] Therefore, the market urgently needs a device that can detect the bottom of the dough without flipping it, and can also detect the other five sides of the dough. Summary of the Invention

[0005] The purpose of this invention is to provide an automatic dough detection device to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention is achieved through the following technical measures: an automatic dough cake detection device, comprising a main cabinet as the carrier of the entire device, characterized in that: a transmission support for supporting the operation of the transmission belt is provided on the main cabinet, and a multi-camera vision detection system is provided on the transmission support.

[0007] The multi-camera vision inspection system includes a gantry bracket with a bowl light source mounted above the conveyor belt. The bowl light source faces the dough inspection area. A top camera is set in the center of the top of the bowl light source. A left camera and a right camera are set in the horizontal direction of the top camera. A front camera and a rear camera are set in the vertical direction of the top camera. Side light sources are set on the front and rear sides of the dough inspection area. A backlight source is set on the bottom surface of the dough.

[0008] The multi-camera vision inspection system is equipped with a first rejection module.

[0009] The first rejection module includes an air blowing nozzle, and a waste box for placing defective dough is provided opposite the air blowing nozzle.

[0010] A dough bottom detection device is provided behind the first rejection module.

[0011] The dough bottom detection device includes a base frame that supports the device. An adjustable angle worktable is fixedly connected to the base frame. A receiving cabinet is connected to the adjustable angle worktable. A dome-shaped visual inspection system is connected to the inner wall of the receiving cabinet through a middle fixing block. A transmission limit bar is connected to the outer wall of the receiving cabinet and a large column through a clamping block. A glass panel for transmitting the dough is provided below the transmission limit bar.

[0012] A second rejection module is provided behind the dough bottom detection device, and the structure of the second rejection module is the same as that of the first rejection module.

[0013] Compared with the prior art, the advantages of the present invention are: this novel structure can not only detect the five sides of the dough through a multi-camera vision inspection system, but also detect the bottom of the dough without flipping it, thereby ensuring the integrity of the dough.

[0014] As an improvement of the present invention, the adjustable angle worktable includes a base plate connected to the base frame. The base plate is connected to a support platform via four small columns. A fixed frame is provided on the support platform, and a rotatable cylinder is rotatably fixed within the fixed frame. An inclined base integrally extends from the rotatable cylinder and is fixedly connected to the receiving cabinet. The purpose of this design is to allow the adjustable angle worktable to have a certain degree of inclination by setting the rotatable cylinder, thereby controlling the inclination of the glass panel and allowing the dough to be conveyed at a suitable speed.

[0015] As an improvement of the present invention, a worm gear is provided on the rotatable cylinder, and a hand crank is provided on the bottom surface of the tiltable base. The hand crank is provided with a worm gear that is geared and rack-driven with the worm gear. The purpose of this design is to rotate the tiltable base by rotating the hand crank, utilizing the worm gear structure, to meet the tilting angle requirement.

[0016] As an improvement of the present invention, the glass panel is connected and fixed by a fixed long clamp of a connecting baffle, and the connecting baffle is provided with an elongated hole. The purpose of this design is that the height of the connecting baffle can be adjusted through the elongated hole, thereby adjusting the height of the glass panel on it.

[0017] As an improvement to this invention, the left and right cameras are fixed to the main cabinet via a large steering bracket, which includes a longitudinal support rod and a transverse support rod, both of which are fixed by clamping blocks. The purpose of this design is that, because the large steering bracket can adjust the left-right and high-low position of the clamped camera by adjusting the clamping positions of the longitudinal and transverse support rods, the shooting angle for the pancake can be optimized.

[0018] As an improvement of the present invention, a guide component to prevent the conveyor belt from deviating is installed on the transmission support. The guide component includes a small steering bracket, on which a guide block is installed. The purpose of this design is to first ensure the consistency of the conveyor belt movement through the guide block of the guide component, thereby ensuring the consistency of the movement of the dough pieces on the conveyor belt, so that each dough piece is always in the same position when illuminated by the light source and when photographed, thus improving the accuracy of comparison.

[0019] As an improvement of the present invention, the guide block is provided with a protruding portion to limit the conveyor belt from deviating. The purpose of this design is that the protruding portion is an L-shaped step, the protrusion of which can prevent the conveyor belt from running off course.

[0020] As an improvement of the present invention, a first opening fixing slot is provided on one end face of the clamping block, and a second opening fixing slot is provided on the other end face perpendicular to the first end face. The opening fixing slot is provided with a locking hole. The purpose of this design is to ensure that the first and second opening fixing slots are perpendicularly distributed in space, allowing the columns clamped by the opening slots to be perpendicular to each other, thus meeting operational requirements.

[0021] As an improvement of the present invention, the first rejection module is equipped with a through-beam sensor. The purpose of this design is that the through-beam sensor can detect the position of defective dough pieces and control the air nozzles to work in a timely manner to blow the defective dough pieces into the waste box.

[0022] As an improvement of the present invention, the air nozzle is provided with a flat air outlet. The purpose of this design is that the air force of the flat air outlet is more uniform. Since the dough is different from other products and is fragile, it is easy to break or crumble if it is not turned over properly. Therefore, the air blowing mode is adopted to ensure the integrity of the dough. Attached Figure Description

[0023] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0024] In the attached diagram: Figure 1 This is a perspective view of the automatic dough detection device described in this invention.

[0025] Figure 2 This is a perspective view of the multi-camera vision inspection system described in this invention.

[0026] Figure 3 This is a perspective view of the dough bottom surface detection device described in this invention.

[0027] Figure 4 This is a perspective view of the dough bottom detection device (receiving cabinet) described in this invention.

[0028] Figure 5 This is a perspective view of the adjustable angle worktable described in this invention.

[0029] Figure 6 is an enlarged view of the first rejection module described in this invention.

[0030] Figure 7 is a top view of the multi-camera vision inspection system of the present invention.

[0031] Figure 8 This is a perspective view of the anti-deviation conveyor belt and the first rejection module described in this invention.

[0032] Figure 9 This is a perspective view of the guide component described in this invention.

[0033] Figure 10 This is a perspective view of the large steering bracket described in this invention.

[0034] Figure 11 This is a schematic diagram of the installation of the glass panel according to the present invention.

[0035] Figure 12 This is a three-dimensional schematic diagram of the air-blowing nozzle described in this invention.

[0036] Figure 13 This is a schematic diagram of the operation of the clamping block described in this invention.

[0037] Explanation of reference numerals in the attached diagram: 1. Main cabinet; 2. Conveyor belt; 3. Conveyor support; 4. Multi-camera vision inspection system; 5. Bowl-shaped light source; 6. Gantry support; 7. Top camera; 8. Left camera; 9. Right camera; 10. Front camera; 11. Rear camera; 12. Side light source; 13. Dough sheet; 14. Backlight; 15. First rejection module; 16. Air nozzle; 17. Waste box; 18. Dough sheet bottom detection device; 19. Base frame; 20. Adjustable angle worktable; 21. Supporting cabinet; 22. Intermediate fixing block; 23. Dome-shaped bowl-shaped vision inspection system; 24. Clamping block; 25. Large column; 26. Conveyor limit bar; 27. Glass panel; 28. Second rejection module; 29. ​​Base plate; 30. 31. Small column; 32. Support platform; 33. Fixed frame; 34. Rotatable cylinder; 35. Tiltable base; 36. Worm gear; 37. Hand crank; 38. Worm gear; 39. Connecting baffle; 40. Fixed long clamp; 41. Long waist-shaped hole; 42. Large steering bracket; 43. Longitudinal support rod; 44. Horizontal support rod; 45. Guide assembly; 46. Small steering bracket; 47. Guide block; 48. Protruding part; 49. First opening fixing seam; 50. Second opening fixing seam; 51. Locking hole; 52. Through-beam sensor; 53. Flat air outlet; 54. Control panel; 55. Air tank; 56. Oil-gas separator; 57. Top cover; 58. Left support rod; 59. Right support rod; 50. Air inlet. Detailed Implementation

[0038] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0039] Example 1 Please refer to Figure 1 -13.

[0040] This embodiment provides an automatic dough detection device, including a main cabinet 1 that supports the entire device. A transmission support 3 is mounted on the main cabinet 1 to support the operation of a conveyor belt 2. A multi-camera vision detection system 4 is mounted on the transmission support 3. The air supply for the entire device comes from the total output air from the air compressor, which is filtered by an oil-gas separator 26 before being sent to an air storage tank 25 and then distributed to each air-consuming unit. A human-machine interface control panel 53 is mounted on the main cabinet 1.

[0041] In the embodiments of this invention application, please refer to Figure 2 and Figure 7The multi-camera visual inspection system 4 includes a gantry bracket 6 above the conveyor belt 2, on which a bowl light source 5 is mounted. The bowl light source 5 faces the dough inspection area. A top camera 7 is located at the top center of the bowl light source 5. A left camera 8 and a right camera 9 are located laterally on the top camera 7. A front camera 10 and a rear camera 11 are located longitudinally on the top camera 7. Side light sources 12 are located on the front and rear sides of the dough inspection area. A backlight 14 is located on the bottom surface of the dough 13. This novel structure, consisting of five cameras (front, back, left, right, and top), forms the multi-camera visual inspection system 4, enabling multi-directional inspection of the dough 13. The bowl light source 5, backlight 14, and side light sources 12 provide light to the dough 13, resulting in better inspection performance, higher accuracy, and more precise detection of defects such as oil stains, burnt black spots, undercooked dough, and severely damaged dough 13.

[0042] The multi-camera vision inspection system 4 is equipped with a first rejection module 15.

[0043] In the embodiments of this invention application, please refer to Figure 6 The first rejection module 15 includes an air nozzle 16, and a waste box 17 for placing defective dough pieces 13 is provided opposite the air nozzle 16.

[0044] A dough bottom detection device 18 is provided behind the first rejection module 15. The dough bottom detection device 18 is connected to the first rejection module 15 through the left support rod 57, and the dough bottom detection device 18 is connected to the second rejection module 28 behind it through the right support rod 58.

[0045] In the embodiments of this invention application, please refer to Figure 3 and Figure 4 The dough bottom detection device 18 includes a base frame 19 supporting the device. An adjustable angle worktable 20 is fixedly connected to the base frame 19. A receiving cabinet 21 is connected to the adjustable angle worktable 20. A dome-shaped visual inspection system 23 is connected to the inner wall of the receiving cabinet 21 through a middle fixing block 22. A transmission limiting strip 26 and a top cover 56 are connected to the outer wall of the receiving cabinet 21 through a clamping block 24 and a large column 25. A glass panel 27 for transmitting the dough 13 is provided below the transmission limiting strip 26. The top cover 56 serves as the top surface of the dough bottom detection device 18, providing a shielding and protection function.

[0046] The dough bottom detection device 18 provided in this embodiment is fixedly connected to the tiltable base 34 of the adjustable angle workbench 20 and the receiving cabinet 21 (it cannot be directly seen in the figure due to the obstruction of the viewing angle). One side of the middle fixing block 22 is connected to the receiving cabinet 21, and the other side is connected to the dome-shaped visual detection system 23. The fixed long clamp 39 of the connecting baffle 38 clamps the glass panel 27, and the side of the connecting baffle 38 is connected to the receiving cabinet 21.

[0047] In this embodiment, the dough disc bottom detection device 18 works as follows: During normal use, the dough disc 13 is transferred from the first rejection module 15 to the glass panel 27, where it slides onto the glass panel 27. Since the glass panel 27 is tilted, the dough disc 13 slides to the second rejection module 28 under gravity. Because a camera is installed under the glass panel 27, the bottom surface of the dough disc 13 is captured by the camera during its descent, and the signal is input to the control module for judgment.

[0048] In the embodiments of this invention application, please refer to Figure 1 A second rejection module 28 is provided behind the dough bottom detection device 18. The structure of the second rejection module 28 is basically the same as that of the first rejection module 15, but the rejection direction is opposite.

[0049] In the embodiments of this invention application, please refer to Figure 5 The adjustable angle worktable 20 includes a base plate 29 connected to the base frame 19. The base plate 29 is connected to a support platform 31 via four small columns 30. A fixed frame 32 is provided on the support platform 31, and a rotatable cylinder 33 is rotatably fixed inside the fixed frame 32. An inclined base 34, which is fixedly connected to the receiving cabinet 21, extends integrally from the rotatable cylinder 33. By setting the rotatable cylinder 33, the adjustable angle worktable 20 can have a certain degree of inclination, and ultimately the inclination of the glass panel 27 can be controlled, thereby allowing the dough 13 to be conveyed at a suitable speed.

[0050] Furthermore, a worm gear portion 35 is provided on the rotatable cylinder 33, and a hand crank device 36 is provided on the bottom surface of the tiltable base 34. The hand crank device 36 is provided with a worm portion 37 that is geared and rack-driven with the worm gear portion 35. By rotating the hand crank device 36, the tiltable base 34 is driven to rotate using the worm and worm gear structure, thereby satisfying the angle tilting requirement.

[0051] In the embodiments of this invention application, please refer to Figure 11 The glass panel 27 is connected and fixed by a fixed long clamp 39 of a connecting baffle 38, and the connecting baffle 38 is provided with an elongated slot 40. The height of the connecting baffle 38 can be adjusted through the elongated slot 40, thereby adjusting the height of the glass panel 27 on it.

[0052] In the embodiments of this invention application, please refer to Figure 7 and Figure 10 The left camera 8 and the right camera 9 are fixed to the main cabinet 1 by a large turning bracket 41, which includes a longitudinal support rod 42 and a transverse support rod 43, both of which are fixed by clamping blocks 24. Since the large turning bracket 41 can adjust the left-right and high-low positions of the clamped cameras by adjusting the clamping positions of the longitudinal support rod 42 and the transverse support rod 43, the shooting angle of the pancake 13 can be optimized.

[0053] In the embodiments of this invention application, please refer to Figure 8 and Figure 9 The transmission support 3 is equipped with a guide assembly 44 to prevent the transmission belt 2 from deviating. The guide assembly 44 includes a small steering bracket 45, on which a guide block 46 is mounted. The guide block 46 of the guide assembly 44 ensures the consistency of the transmission belt 2's movement, thereby ensuring the consistent movement of the dough pieces 13 on the transmission belt 2. This ensures that each dough piece 13 receives illumination from the light source and is always in the same position for imaging, improving comparison accuracy. It should be noted that the main structural difference between the small steering bracket 45 and the large steering bracket 41 lies in the length and size of the components.

[0054] In the embodiments of this invention application, please refer to Figure 9 The guide block 46 is provided with a protruding part 47 to limit the deviation of the conveyor belt 2. The protruding part 47 is an L-shaped step, and its protrusion can prevent the conveyor belt 2 from running off course.

[0055] In the embodiments of this invention application, please refer to Figure 13 The clamping block 24 has a first opening fixing slot 48 on one end face and a second opening fixing slot 49 on the other end face perpendicular to the first end face. The opening fixing slot is provided with a locking hole 50. By making the first opening fixing slot 48 and the second opening fixing slot 49 perpendicularly distributed in space, the columns clamped by the opening slots can be made perpendicular to each other, which meets the working requirements.

[0056] In the embodiments of this invention application, please refer to Figure 6 The first rejection module 15 is equipped with a through-beam sensor 51. When the sensor detects a defective dough sheet 13, it controls the solenoid valve to change the air supply, and the compressed air in the blowing nozzle 16 blows the defective dough sheet 13 into the waste box 17 opposite, which is used to store the defective dough sheet 13. Further details can be found in... Figure 12One end of the air nozzle 16 is an air inlet 59, and the other end is a flat air outlet 52, which allows compressed air to more effectively blow the dough cake 13 into the waste box 17. In the prior art, most methods use a cylinder to push the defective dough cake 13 into the waste box 17. Since the dough cake 13 is different from other products and is fragile, it is easy to break or crumble if it is not turned over properly. Therefore, using an air blowing method can ensure the integrity of the dough cake 13.

[0057] This embodiment provides an automatic dough cake detection device. In normal use, after the dough cake 13 is formed, it is conveyed to the detection position by the conveyor belt 2. It is simultaneously illuminated by the bowl light source 5 on the top, the side light sources 12 on both sides and the back light source 14 on the bottom. The multi-camera vision detection system 4, composed of the top camera 7, the front camera 10, the rear camera 11, the left camera 8 and the right camera 9, captures images. The software system analyzes and processes the images to determine whether the dough cake 13 is qualified. Unqualified products are removed in the first rejection module 15 after the images are taken. Qualified products are conveyed to the bottom surface detection device 18 of the dough cake 13 to capture images of the bottom surface of the dough cake 13. The software system compares the images to determine whether the dough cake 13 is qualified. Qualified products are then conveyed to the packaging area of ​​the dough cake 13.

[0058] The beneficial effects of this invention are that this novel structure can not only detect the five sides of the dough 13 through the multi-camera vision inspection system 4, but also detect the bottom of the dough 13 without flipping it, thereby ensuring the integrity of the dough 13.

[0059] In the description of this invention, it should be noted that the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0060] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 invention according to the specific circumstances.

[0061] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An automatic dough sheet detection device, comprising a main cabinet (1) serving as the support for the entire device, characterized in that: in The main cabinet (1) is provided with a transmission bracket (3) to support the operation of the transmission belt (2), and a multi-camera vision inspection system (4) is provided on the transmission bracket (3): The multi-camera visual inspection system (4) includes a gantry bracket (6) above the conveyor belt (2) on which a bowl light source (5) is installed. The bowl light source (5) faces the dough detection area. A top camera (7) is set in the top center area of ​​the bowl light source (5). A left camera (8) and a right camera (9) are set in the horizontal direction of the top camera (7). A front camera (10) and a rear camera (11) are set in the vertical direction of the top camera (7). Side light sources (12) are set in the front and rear sides of the dough detection area. A backlight source (14) is set in the bottom surface of the dough (13). The multi-camera vision inspection system (4) is equipped with a first rejection module (15) at the rear: The first rejection module (15) includes an air nozzle (16), and a waste box (17) for placing defective dough pieces (13) is provided opposite to the air nozzle (16). A dough bottom detection device (18) is provided behind the first rejection module (15): The dough bottom detection device (18) includes a base frame (19) for supporting the device. An adjustable angle worktable (20) is fixedly connected to the base frame (19). A receiving cabinet (21) is connected to the adjustable angle worktable (20). A dome-shaped visual inspection system (23) is connected to the inner wall of the receiving cabinet (21) through a middle fixing block (22). A transmission limiting strip (26) is connected to the outer wall of the receiving cabinet (21) through a clamping block (24) and a large column (25). A glass panel (27) for transmitting dough (13) is provided below the transmission limiting strip (26). A second rejection module (28) is provided behind the dough bottom detection device (18), and the structure of the second rejection module (28) is the same as that of the first rejection module (15).

2. The automatic dough detection device according to claim 1, characterized in that: The adjustable angle workbench (20) includes a base plate (29) connected to the base frame (19). The base plate (29) is connected to a support platform (31) via four small columns (30). A fixed frame (32) is provided on the support platform (31). A rotatable cylinder (33) is rotatably fixed inside the fixed frame (32). An inclined base (34) integrally extends from the rotatable cylinder (33) and is fixedly connected to the receiving cabinet (21).

3. The automatic dough detection device according to claim 2, characterized in that: The rotatable cylinder (33) is provided with a worm gear (35), and the bottom surface of the tiltable base (34) is provided with a hand crank (36), and the hand crank (36) is provided with a worm gear (37) that is geared and racked with the worm gear (35).

4. The automatic dough detection device according to claim 1, characterized in that: The glass panel (27) is connected and fixed by a fixed long clamp (39) of a connecting baffle (38), and the connecting baffle (38) is provided with an elongated hole (40).

5. The automatic dough detection device according to claim 1, characterized in that: The left camera (8) and the right camera (9) are fixed on the main cabinet (1) by a large steering bracket (41), which includes a longitudinal support rod (42) and a transverse support rod (43), and the two are fixed by a clamping block (24).

6. The automatic dough detection device according to claim 1, characterized in that: The transmission support (3) is equipped with a guide assembly (44) to prevent the transmission belt (2) from running off-center. The guide assembly (44) includes a small steering bracket (45) and a guide block (46) is installed on the small steering bracket (45).

7. The automatic dough detection device according to claim 6, characterized in that: The guide block (46) is provided with an overhang (47) to limit the deviation of the conveyor belt (2).

8. The automatic dough detection device according to claim 1, characterized in that: The clamping block (24) has a first opening fixing slot (48) on one end face and a second opening fixing slot (49) on the other end face perpendicular to the first end face. The opening fixing slot is provided with a locking hole (50).

9. The automatic dough detection device according to claim 1, characterized in that: The first rejection module (15) is equipped with a through-beam sensor (51).

10. The automatic dough detection device according to claim 1, characterized in that: The air nozzle (16) is provided with a flat air outlet (52).

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