A pulp molded tableware surface visual inspection device

Abstract

The utility model discloses a kind of paper pulp molded tableware surface visual inspection devices, including the first frame of U-shaped structure, first frame inside symmetry is equipped with first conveyor belt, first conveyor belt includes the shaft that rotates in first frame interior symmetry, the transmission pulley of one end of shaft and the transmission belt for connecting two transmission pulleys, detection area is formed between two transmission belts and is equipped with visual angle detection mechanism;Detection mechanism includes the first camera of being fixed on the bottom wall of first frame, the second camera of being symmetrically arranged in first frame interior and the third camera of being symmetrically arranged on the bottom wall of first frame and being set up to the inclination of up;The side of first frame is equipped with second frame, and paper bowl loading assembly is equipped in the inside of second frame.Through the above structure, when the paper bowl to be detected passes through detection area, surface quality detection is completed by multiple cameras of visual detection mechanism, paper bowl bottom, sidewall full surface detection is realized through different position camera, efficient, accurate detection is realized.

Description

Technical Field

[0001] This utility model relates to the field of industrial automation testing technology, and in particular to a visual inspection device for the surface of pulp molded tableware. Background Technology

[0002] Pulp molded tableware (such as plates, bowls, and cup holders) is prone to surface defects during the production process, including stains, cracks, burrs, uneven thickness, and color deviations. Traditional inspection methods rely on manual visual inspection, which is inefficient, has a high false positive rate, and is costly.

[0003] In the prior art, a search revealed a Chinese patent disclosing "A Visual Inspection Device for Paper Bowls," application number "202022622921.5." This patent mainly includes a hot-press forming machine and a conveyor line. The hot-press forming machine is connected to the conveyor line. It also includes a visual inspection mechanism and an air blowing mechanism. The visual inspection mechanism includes multiple columns fixed to the conveyor line. A tabletop is set on top of each column, and a display and a host are mounted on the tabletop. The host stores information on qualified products. A camera is mounted at the bottom of the tabletop and electrically connected to the host. The air blowing mechanism includes a mounting plate fixed to the conveyor line. An air nozzle and a solenoid valve are mounted on the mounting plate, connected to a pipe that is connected to an air source. This patent uses online inspection to detect and remove defective products from the production line source, solving the problems of time-consuming and labor-intensive human inspection and high missed detection rates, thus greatly improving production efficiency and product quality. However, when a camera is positioned above the paper bowl for inspection, and the bowl is placed on a conveyor line for feeding, its bottom contacts the conveyor line, making it difficult to effectively detect defects on the sides and bottom of the bowl. This creates blind spots and prevents comprehensive and efficient defect detection of the paper bowl. Therefore, this invention provides a visual inspection device for the surface of molded pulp tableware to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a visual inspection device for the surface of molded pulp tableware. When the paper bowl to be inspected passes through the inspection area, the surface quality is inspected by multiple cameras of the visual inspection mechanism. The bottom and side walls of the paper bowl are inspected by cameras at different positions, achieving efficient and accurate inspection.

[0005] To achieve the above objectives, a visual inspection device for the surface of molded pulp tableware is provided, comprising a first frame with a U-shaped structure, a first conveyor belt symmetrically arranged inside the first frame, the first conveyor belt comprising a rotating shaft symmetrically rotating inside the first frame, a drive pulley fixed at one end of the rotating shaft, and a drive belt for connecting the two drive pulleys, a detection area is formed between the two drive belts and a viewing angle detection mechanism is provided.

[0006] The detection mechanism includes a first camera fixed to the bottom wall of the first frame, a second camera symmetrically arranged inside the first frame, and a third camera symmetrically arranged on the bottom wall of the first frame and tilted upwards.

[0007] A second frame is provided on one side of the first frame, and a paper bowl feeding component is provided inside the second frame.

[0008] According to the aforementioned visual inspection device for the surface of molded pulp tableware, the paper bowl feeding assembly includes a second conveyor belt disposed inside the second frame, a plurality of fixed rods uniformly fixed to the top of the second frame and having an L-shaped structure, and two guide rods symmetrically disposed above the second conveyor belt, wherein the guide rods are fixed to the top of the fixed rods.

[0009] According to the aforementioned visual inspection device for the surface of molded pulp tableware, the first conveyor belt further includes a motor fixed to one side of the first frame, and one end of the rotating shaft is fixedly connected to the output shaft of the motor.

[0010] According to the aforementioned visual inspection device for the surface of molded pulp tableware, a guide part is fixedly provided at the end of the guide rod away from the first frame, and the two guide parts form a figure-eight structure.

[0011] According to the aforementioned visual inspection device for the surface of molded pulp tableware, the guide rod is a smooth rod structure, and the height of the guide rod is higher than that of the transmission belt.

[0012] According to the aforementioned visual inspection device for the surface of molded pulp tableware, the visual inspection mechanism further includes a host computer located on one side of the first frame, and the first camera, the second camera, and the third camera are all equipped with light sources and laser sensors.

[0013] According to the aforementioned visual inspection device for the surface of molded pulp tableware, the bottom wall of the paper bowl contacts the top of the second conveyor belt, and the raised folded edge of the paper bowl contacts the top of the transmission belt.

[0014] This utility model has the following beneficial effects:

[0015] 1. Compared with existing technologies, when the paper bowl to be inspected passes through the inspection area, the surface quality inspection is completed by multiple cameras of the vision inspection agency. The first camera vertically upwards to shoot defects on the bottom of the paper bowl, the second camera horizontally shoots the side wall of the paper bowl, and the third camera shoots the other side wall area of ​​the paper bowl at an upward angle. The bottom and side wall of the paper bowl are inspected on the whole surface, realizing efficient and accurate inspection of the paper bowl.

[0016] 2. Compared with the existing technology, the paper bowl to be tested is fed onto the second conveyor belt. The rotating second conveyor belt drives the paper bowl to move while being limited by the guide rod, which can better transport it to the testing area for subsequent testing work and realize the continuous feeding of the paper bowl to be tested. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a schematic diagram of the overall structure of a visual inspection device for the surface of molded pulp tableware according to this utility model;

[0019] Figure 2 This is a schematic diagram of the first conveyor belt structure of a visual inspection device for the surface of molded pulp tableware according to this utility model;

[0020] Figure 3 This utility model relates to a visual inspection device for the surface of molded pulp tableware. Figure 2 Top view of the structure;

[0021] Figure 4 This is a schematic diagram of the first conveyor belt structure of a visual inspection device for the surface of molded pulp tableware according to this utility model.

[0022] Legend:

[0023] 1. First frame; 2. Rotating shaft; 3. Transmission pulley; 4. Transmission belt; 5. Motor; 6. First camera; 7. Second camera; 8. Third camera; 9. Second frame; 10. Second conveyor belt; 11. Fixed rod; 12. Guide rod; 13. Guide part; 14. Main unit. Detailed Implementation

[0024] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0025] Reference Figure 1-4This utility model discloses a visual inspection device for the surface of molded pulp tableware, comprising a U-shaped first frame 1. A first conveyor belt is symmetrically arranged inside the first frame 1. The first conveyor belt includes a rotating shaft 2 symmetrically rotating inside the first frame 1, a transmission pulley 3 fixed to one end of the rotating shaft 2, a transmission belt 4 connecting the two transmission pulleys 3, and a motor 5 fixed to one side of the first frame 1. One end of the rotating shaft 2 is fixedly connected to the output shaft of the motor 5. A detection area is formed between the two transmission belts 4 and a viewing angle detection mechanism is provided. The detection mechanism includes a first camera 6 fixed to the bottom wall of the first frame 1, a second camera 7 symmetrically arranged inside the first frame 1, a third camera 8 symmetrically arranged on the bottom wall of the first frame 1 and tilted upwards, and a main unit 14 located on one side of the first frame 1. Each of the first camera 6, second camera 7, and third camera 8 is equipped with a light source and a laser sensor. The light source provides uniform illumination, and the laser sensor detects whether a product has entered the camera's field of view.

[0026] The paper bowl to be inspected is located between two conveyor belts 4. The folded protrusions of the paper bowl contact the conveyor belts 4 to support and transport the paper bowl. The motor 5 drives the conveyor belts 4 to rotate cyclically. When the paper bowl passes through the inspection area, multiple cameras of the vision inspection mechanism complete the surface quality inspection. The first camera 6 shoots vertically upward to photograph defects on the bottom of the paper bowl, the second camera 7 shoots horizontally to photograph the side wall of the paper bowl, and the third camera 8 shoots at an upward angle to photograph the other side wall area of ​​the paper bowl. This allows for full surface inspection of the bottom and side walls of the paper bowl, achieving efficient and accurate inspection of the paper bowl.

[0027] A second frame 9 is provided on one side of the first frame 1. A paper bowl feeding assembly is provided inside the second frame 9. The paper bowl feeding assembly includes a second conveyor belt 10 located inside the second frame 9, a plurality of fixed rods 11 uniformly fixed to the top of the second frame 9 and having an L-shaped structure, and two guide rods 12 symmetrically located above the second conveyor belt 10. The guide rods 12 are fixed to the top of the fixed rods 11.

[0028] The paper bowls to be tested are fed onto the second conveyor belt 10. The rotating second conveyor belt 10 moves the paper bowls while being limited by the guide rod 12, which can better transport them to the testing area for subsequent testing work and realize the continuous feeding of the paper bowls to be tested.

[0029] The bottom wall of the paper bowl contacts the top of the second conveyor belt 10, and the raised folded edge of the paper bowl contacts the top of the transmission belt 4. Supported by the second conveyor belt 10, the paper bowl is conveyed onto the transmission belt 4 via the guide rod 12. A guide portion 13 is fixed to the end of the guide rod 12 away from the first frame 1. The two guide portions 13 form a V-shape, which facilitates automatic alignment of the paper bowl under the constraint of the V-shape guide portion 13. The guide rod 12 is a smooth rod structure and can be made of smooth stainless steel. The height of the guide rod 12 is slightly higher than that of the transmission belt 4. Utilizing the inertia of the second conveyor belt 10, the paper bowl smoothly transitions onto the transmission belt 4 via the guide rod 12.

[0030] Working principle: The paper bowl to be tested is fed onto the second conveyor belt 10. The rotating second conveyor belt 10 drives the paper bowl to move while being limited by the guide rod 12, which can better transport it to the testing area for subsequent testing work and realize the continuous feeding of the paper bowl to be tested.

[0031] The paper bowl to be inspected is located between two conveyor belts 4. The folded protrusions of the paper bowl contact the conveyor belts 4 to support and transport the paper bowl. The motor 5 drives the conveyor belts 4 to rotate cyclically. When the paper bowl passes through the inspection area, multiple cameras of the vision inspection mechanism complete the surface quality inspection. The first camera 6 shoots vertically upward to photograph defects on the bottom of the paper bowl, the second camera 7 shoots horizontally to photograph the side wall of the paper bowl, and the third camera 8 shoots at an upward angle to photograph the other side wall area of ​​the paper bowl. This allows for full surface inspection of the bottom and side walls of the paper bowl, achieving efficient and accurate inspection of the paper bowl.

[0032] The visual inspection mechanism (including multiple cameras and a host) involved in this application and the visual inspection device for paper bowls in authorization number CN213644945U have the same working principle and structure. They are both used for paper bowl defect detection. This is understandable to those skilled in the art, and this application will not provide further details.

[0033] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A visual inspection device for the surface of molded pulp tableware, characterized in that, The first frame (1) includes a U-shaped structure. The first conveyor belt is symmetrically arranged inside the first frame (1). The first conveyor belt includes a rotating shaft (2) that rotates symmetrically inside the first frame (1), a transmission pulley (3) fixed at one end of the rotating shaft (2), and a transmission belt (4) for connecting the two transmission pulleys (3). A detection area is formed between the two transmission belts (4) and a viewing angle detection mechanism is provided. The detection mechanism includes a first camera (6) fixed on the bottom wall of the first frame (1), a second camera (7) symmetrically arranged inside the first frame (1), and a third camera (8) symmetrically arranged on the bottom wall of the first frame (1) and tilted upwards. A second frame (9) is provided on one side of the first frame (1), and a paper bowl feeding component is provided on the inner side of the second frame (9).

2. The visual inspection device for the surface of molded pulp tableware according to claim 1, characterized in that, The paper bowl feeding assembly includes a second conveyor belt (10) located inside the second frame (9), a plurality of fixed rods (11) uniformly fixed on the top of the second frame (9) and having an L-shaped structure, and two guide rods (12) symmetrically located above the second conveyor belt (10). The guide rods (12) are fixed on the top of the fixed rods (11).

3. The visual inspection device for the surface of molded pulp tableware according to claim 2, characterized in that, The first conveyor belt also includes a motor (5) fixed on one side of the first frame (1), and one end of the rotating shaft (2) is fixedly connected to the output shaft of the motor (5).

4. The visual inspection device for the surface of molded pulp tableware according to claim 3, characterized in that, The guide rod (12) is fixed with a guide part (13) at one end away from the first frame (1), and the two guide parts (13) form a figure-eight structure.

5. The visual inspection device for the surface of molded pulp tableware according to claim 4, characterized in that, The guide rod (12) is a smooth rod structure, and the height of the guide rod (12) is higher than that of the transmission belt (4).

6. The visual inspection device for the surface of molded pulp tableware according to claim 1, characterized in that, The detection mechanism also includes a host (14) located on one side of the first frame (1), and the first camera (6), the second camera (7) and the third camera (8) are all equipped with light sources and laser sensors.

7. The visual inspection device for the surface of molded pulp tableware according to claim 1, characterized in that, The bottom wall of the paper bowl contacts the top of the second conveyor belt (10), and the raised folded edge of the paper bowl contacts the top of the transmission belt (4).

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