Paper bowl foreign object detection apparatus

Abstract

The utility model discloses a kind of paper bowl foreign matter detection equipment, including the bottom frame of equipment, visual inspection system and vacuum belt conveying system are arranged on bottom frame, visual inspection device with CCD camera is installed in upper cabinet, display screen is fixed on upper cabinet, vacuum belt conveying system includes stepper motor and belt with hole, the back of belt with hole is closely attached with belt support vacuum plate, belt support vacuum plate includes plate body, long waist shape groove is set on the left end surface of plate body, vacuum box body is integrally arranged on the back of plate body, vacuum connection hole is arranged on the side of vacuum box body, visual inspection system rear is provided with blowing and removing device. The novel structure, through vacuum belt conveying system and visual inspection system, suck paper bowl, so that paper bowl will not change position in transmission process, can accurately identify image, improve detection efficiency, while also can improve the detection rate of small defect.

Description

Technical Field

[0001] This utility model relates to the field of intelligent detection manufacturing technology, and in particular to a foreign object detection device for paper bowls. Background Technology

[0002] Paper bowls are disposable containers made of paper. During the production process, abnormalities (such as the presence of low-density foreign matter like hair or minor defects) can result in defective or substandard products, which must be removed. Manual visual inspection is slow and cannot meet the demands of modern high-speed production lines. Commercially available X-ray equipment is ineffective at detecting low-density foreign matter and has a high rate of missed detection for minor defects.

[0003] For example, Chinese Patent Publication No. CN213644945U, titled "A Visual Inspection Device for Paper Bowls," discloses the following technical solution: "To achieve the above objectives, the technical solution adopted by this utility model is: a visual inspection device for paper bowls, including a hot-press forming machine and a conveyor line, wherein the hot-press forming machine is connected to the conveyor line. Its innovation lies in: it also includes a visual inspection mechanism and an air blowing mechanism... The air blowing mechanism includes a mounting plate fixed on the conveyor line, wherein an air nozzle and a solenoid valve are provided on the mounting plate, and the two are connected through a pipe, which is connected to an air source." This solution achieves the technical effect that "this utility model has a simple structure, is convenient and reliable to use... By using online inspection, defective products (damaged, missing materials, deformed, etc.) are detected and removed from the conveyor line from the source of the production line, solving the problems of time-consuming and laborious inspection of products by human eyes and high missed inspection rate, greatly improving production efficiency and product quality."

[0004] In actual production, paper bowls are transported on a conveyor line. Because paper bowls are very light, they are prone to changing position during transport due to vibration and other reasons. When passing through the inspection mechanism, the center of the light from the inspection mechanism may not be aligned with the center of the paper bowl. This makes the image acquisition susceptible to light interference, resulting in inaccurate image information, misjudgments, and the inability to detect low-density foreign objects, thus affecting the accuracy of defect inspection. In other words, conventional transport methods cannot maintain the paper bowl's transport position and posture continuously, affecting the inspection effect. Utility Model Content

[0005] The purpose of this invention is to provide a foreign object detection device for paper bowls to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical measures: a paper bowl foreign object detection device, including a base frame of the device, characterized in that: a visual inspection system is provided on the base frame, the visual inspection system includes an upper cabinet, a visual inspection device with a CCD camera is installed in the upper cabinet, a display screen is fixed on the upper cabinet, a vacuum belt conveyor system is provided on the base frame, the vacuum belt conveyor system includes a stepper motor as a power source, and an annular perforated belt for conveying paper bowls, a belt support vacuum plate is closely attached to the back of the perforated belt, the belt support vacuum plate includes a plate body, an elongated waist-shaped groove for vacuum release is provided on the left end face of the plate body, a vacuum box is integrally provided on the back of the plate body, a vacuum connection hole for connecting a vacuum tube is provided on the side of the vacuum box, and an air blowing rejection device is provided after the visual inspection system.

[0007] Compared with the prior art, the advantages of this utility model are: this new structure, through the vacuum belt conveyor system and the vision inspection system, holds the paper bowl so that the paper bowl does not change position during the transmission process, can accurately identify the image, can detect low-density foreign objects, improve detection efficiency, and can also improve the missed detection rate of minor defects.

[0008] As an improvement of this utility model, the air-blowing rejection device includes an air nozzle with a flat air outlet. The purpose of this design is that the flat air outlet concentrates the airflow, effectively blowing the paper bowls off the conveyor belt and into the defective container placement area.

[0009] As an improvement of this invention, the visual inspection device includes a ring light source surrounding the CCD camera. The purpose of this design is that the ring light source provides more uniform illumination, making product defects clearer, resulting in better inspection performance, higher accuracy, and facilitating subsequent image processing.

[0010] As an improvement to this utility model, the visual inspection device includes a horizontal support fixed to the upper cabinet, and the CCD camera is mounted on the horizontal support via an adjustable bracket. The purpose of this design is to allow for vertical adjustment of the CCD camera's height using the adjustable bracket, maintaining the optimal camera distance.

[0011] As an improvement of this utility model, the perforated belt is evenly distributed with circular negative pressure holes for suctioning the paper bowl. During operation, the negative pressure holes coincide with the position of the elongated groove to transmit vacuum suction. The purpose of this design is to prevent the paper bowl from moving by using a negative pressure belt, maintain a good posture for inspection, and improve inspection efficiency.

[0012] As an improvement to this utility model, the vacuum box has a stepped shape, with the vacuum connection hole located on the thicker step and the elongated groove on the thinner step. The purpose of this design is that the stepped shape allows air to enter through the thicker step and exit through the elongated groove on the thinner step. The difference in volume between the two sections enhances the vacuum suction, achieving an ideal negative pressure effect.

[0013] As an improvement to this utility model, a display screen is rotatably fixed on the upper cabinet. The purpose of this design is to allow the display screen to be flipped and folded during transportation, reducing the overall size of the equipment and facilitating operation.

[0014] As an improvement to this invention, an alarm light is provided on the display screen. The purpose of this design is to use the alarm light to remind the operator that a fault needs to be addressed. Attached Figure Description

[0015] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0016] In the attached diagram: Figure 1 This is a perspective view of the paper bowl foreign object detection device described in this utility model.

[0017] Figure 2 This is a schematic diagram of the visual inspection system described in this utility model.

[0018] Figure 3 This is a perspective view of the vacuum belt conveyor system described in this utility model.

[0019] Figure 4 This is a perspective view of the perforated belt described in this utility model.

[0020] Figure 5 This is a perspective view (front view) of the belt-supported vacuum plate described in this utility model.

[0021] Figure 6 is a perspective view (back view) of the belt-supported vacuum plate of this utility model.

[0022] Figure 7 is a perspective view of the visual inspection component described in this utility model.

[0023] Figure 8 This is a schematic diagram of the installation of the display screen described in this utility model.

[0024] Figure 9 This is an enlarged view of the air nozzle described in this utility model.

[0025] Explanation of reference numerals in the attached drawings: 1. Base frame; 2. Vision inspection system; 3. Upper cabinet; 4. CCD camera; 5. Vision inspection device; 6. Display screen; 7. Vacuum belt conveyor system; 8. Stepper motor; 9. Paper bowl; 10. Perforated belt; 11. Belt supporting vacuum plate; 12. Plate body; 13. Long waist-shaped groove; 14. Vacuum box; 15. Vacuum connection hole; 16. Air blowing rejection device; 17. Air blowing nozzle; 18. Flat air outlet; 19. Ring light source; 20. Horizontal support; 21. Adjustable support; 22. Negative pressure hole; 23. Alarm light; 24. Oil and gas filter; 25. Pressure roller shaft; 26. Fixed arc groove; 27. Tilting shaft. Detailed Implementation

[0026] 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.

[0027] Example 1 Please refer to Figure 1 -9.

[0028] This embodiment provides a foreign object detection device for paper bowls, including a base frame 1, a vision inspection system 2 mounted on the base frame 1, an air-blowing rejection device 16 mounted downstream of the vision inspection system 2, and a vacuum belt conveyor system 7 mounted on the base frame 1. The air from the oil-gas filter 24 is supplied to the air-blowing rejection device 16, and the vacuum is provided by a blower or similar specialized equipment; this is prior art and will not be described in detail.

[0029] In the embodiments of this utility model application, please refer to Figure 2 The visual inspection system 2 includes an upper cabinet 3, in which a visual inspection device 5 with a CCD camera 4 is installed, and a display screen 6 is fixed on the upper cabinet 3.

[0030] In the embodiments of this utility model application, please refer to Figure 1 A vacuum belt conveyor system 7 is installed on the base frame 1. Further details can be found in [reference needed]. Figure 3 The vacuum belt conveyor system 7 includes a stepper motor 8 as a power source and an annular perforated belt 10 for conveying paper bowls 9. The back of the perforated belt 10 is closely attached to a belt support vacuum plate 11. The belt support vacuum plate 11 includes a plate body 12. A long waist-shaped groove 13 for vacuum discharge is provided on the left end face of the plate body 12. A vacuum box body 14 is integrally provided on the back of the plate body 12. A vacuum connection hole 15 for connecting a vacuum tube is provided on the side of the vacuum box body 14.

[0031] It should be noted that, please refer to Figure 3In order to make the belt support vacuum plate 11 fit more tightly against the perforated belt 10 and ensure vacuum suction, two pressure rollers 25 are set to press the perforated belt 10.

[0032] In the embodiments of this utility model application, please refer to Figure 9 The air-blowing rejection device 16 includes an air nozzle 17, which is provided with a flat air outlet 18. The flat air outlet 18 concentrates the airflow when it is blown out, which can effectively blow the paper bowl 9 out of the conveyor belt and into the defective outlet placement area.

[0033] In the embodiments of this utility model application, please refer to Figure 7 The visual inspection device 5 includes a ring light source 19 surrounding the CCD camera 4. The ring light source 19 provides more uniform illumination, making product defects clearer, improving inspection results, increasing accuracy, and facilitating subsequent image processing.

[0034] In the embodiments of this utility model application, please refer to Figure 7 The visual inspection device 5 includes a horizontal support 20 fixed to the upper cabinet 3, and the CCD camera 4 is mounted on the horizontal support 20 via an adjustable bracket 21. The height of the CCD camera 4 can be adjusted vertically via the adjustable bracket 21 to maintain the optimal imaging distance.

[0035] In the embodiments of this utility model application, please refer to Figure 3 , Figure 4 and Figure 5 The perforated belt 10 has evenly distributed circular negative pressure holes 22 for holding the paper cup 9 in place. During operation, the negative pressure holes 22 coincide with the positions of the elongated groove 13 to transmit vacuum suction. The negative pressure belt prevents the paper cup 9 from moving, maintaining a good posture for inspection and improving inspection efficiency.

[0036] In the embodiments of this utility model application, please refer to Figure 6 The vacuum chamber 14 has a stepped shape, with the vacuum connection hole 15 located on the thicker step and the elongated groove 13 located on the thinner step. The stepped design allows air to enter through the thicker step and exit through the elongated groove 13 on the thinner step. The difference in volume between the two sections enhances the vacuum suction, achieving an ideal negative pressure effect.

[0037] In the embodiments of this utility model application, please refer to Figure 8 A display screen 6 is rotatably fixed to the upper cabinet 3. During transportation, the display screen 6 can be flipped and folded to reduce the overall size of the equipment and facilitate operation.

[0038] Furthermore, the display screen 6 is equipped with an alarm light 23 to alert the operator when a malfunction needs to be addressed. When the display screen 6 is flipped, it rotates around the flipping axis 27 and is secured with bolts at the fixed arc-shaped groove 26.

[0039] The foreign object detection device for paper bowls provided in this embodiment has the following advantages: First, it can perform visual inspection, replacing manual inspection one by one and improving inspection efficiency.

[0040] Second: It can solve the problems of high cost, slow detection speed and low detection efficiency of existing X-ray detection equipment on the market.

[0041] Third: It can solve the problem that commercially available X-ray inspection equipment is not sensitive to low-density foreign objects, such as hair, and has poor detection results.

[0042] Fourth: Using AI deep learning, it can meet the foreign object detection needs of various paper bowls, with accurate detection and reduced false rejection.

[0043] 5. The use of a negative pressure conveyor belt can prevent the paper bowl 9 from moving, maintain a good posture for testing, and improve testing efficiency.

[0044] Sixth: It adopts a closed-loop stepper motor 8, which can track the product position in real time.

[0045] 7. Compact size, highly adaptable, and easy to operate.

[0046] 8. Adopting a flip-up display screen 6 reduces transportation costs.

[0047] The beneficial effects of this utility model are as follows: This novel structure, through the vacuum belt conveyor system 7 and the vision inspection system 2, holds the paper bowl 9 so that the paper bowl 9 does not change position during the transmission process, which can accurately identify the image, improve the detection efficiency, and at the same time improve the missed detection rate of minor defects.

[0048] In the description of this utility model, it should be noted that the terms "vertical", "up", "down", "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 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. Therefore, they should not be construed as limitations on this utility model.

[0049] In the description of this utility model, 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 utility model according to the specific circumstances.

[0050] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.

Claims

1. A foreign object detection device for paper bowls, comprising a base frame (1) of the device, characterized in that: in A visual inspection system (2) is installed on the bottom frame (1). The visual inspection system (2) includes an upper cabinet (3). A visual inspection device (5) with a CCD camera (4) is installed inside the upper cabinet (3). A display screen (6) is fixed on the upper cabinet (3). A vacuum belt conveyor system (7) is installed on the bottom frame (1). The vacuum belt conveyor system (7) includes a stepper motor (8) as a power source and a perforated annular belt (1) for conveying paper bowls (9). 0), the back of the perforated belt (10) is closely attached to the belt support vacuum plate (11), the belt support vacuum plate (11) includes a plate body (12), a long waist-shaped groove (13) for vacuum discharge is provided on the left end face of the plate body (12), a vacuum box body (14) is integrally provided on the back of the plate body (12), a vacuum connection hole (15) for connecting a vacuum tube is provided on the side of the vacuum box body (14), and a blowing rejection device (16) is provided after the visual inspection system (2).

2. The foreign object detection device for paper bowls according to claim 1, characterized in that: The air-blowing removal device (16) includes an air-blowing nozzle (17) with a flat air outlet (18).

3. The foreign object detection device for paper bowls according to claim 1, characterized in that: The visual inspection device (5) includes a ring light source (19) surrounding the CCD camera (4).

4. The foreign object detection device for paper bowls according to claim 1, characterized in that: The visual inspection device (5) includes a horizontal support (20) fixed to the upper cabinet (3), and the CCD camera (4) is mounted on the horizontal support (20) via an adjustable bracket (21).

5. The foreign object detection device for paper bowls according to claim 1, characterized in that: The perforated belt (10) has circular negative pressure holes (22) evenly distributed along its entire length to hold the paper bowl (9). During operation, the negative pressure holes (22) and the elongated groove (13) are aligned to transmit vacuum suction.

6. The foreign object detection device for paper bowls according to claim 1, characterized in that: The vacuum box (14) has a stepped shape, with the vacuum connection hole (15) set on the thick step and the long waist-shaped groove (13) set on the thin step.

7. The foreign object detection device for paper bowls according to claim 1, characterized in that: A display screen (6) is rotatably fixed on the upper cabinet (3).

8. The foreign object detection device for paper bowls according to claim 7, characterized in that: An alarm light (23) is provided on the display screen (6).

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