An automatic inspection line for cans

By designing an automated inspection line for canned goods, and using conveyor belts, limiting devices, and vacuum inspection machines, the automatic detection of can vacuum levels and the sorting of substandard products were achieved. This solved the quality problems caused by deviations in can vacuum capping, and improved inspection efficiency and product quality.

CN224525352UActive Publication Date: 2026-07-21LISHUI BAIXING FUNGI BIOTECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LISHUI BAIXING FUNGI BIOTECH CO LTD
Filing Date
2025-08-18
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

In existing technologies, vacuum capping machines for cans have capping deviations, resulting in the cans not being in a vacuum state, affecting the shelf life, and manual inspection is inefficient.

Method used

An automated inspection line for canned food was designed, which uses a conveyor belt, limiters, positioning devices, and a vacuum inspection machine to detect the vacuum level of cans in a non-contact manner, and uses infrared sensors and ejection cylinders to sort out substandard cans.

Benefits of technology

It has enabled automated detection and sorting of canned food vacuum levels, improved detection efficiency, ensured canned food quality, eliminated substandard products, and enhanced the automation level of the production line.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses an automatic inspection assembly line for cans, including conveyer belt, it is used for conveying can along first direction from back to front, the limiting piece that is used for controlling can one by one, the positioning part that is used for can positioning and the sorting component that is used for sorting inferior can are equipped in proper order from back to front on conveyer belt, be equipped with vacuum degree detection machine for detecting the vacuum degree of can on the positioning part, the utility model discloses on production assembly line to can carry out one by one automatic detection vacuum degree, and inferior can is sorted out.
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Description

Technical Field

[0001] This utility model relates to canned food inspection equipment, specifically an automatic inspection line for canned food. Background Technology

[0002] Mushroom sauce, as a type of sauce, can be eaten directly or used for cooking seasoning. Generally, mushroom sauce is packaged in glass jars as canned mushroom sauce, and the jars are sealed using vacuum capping machines. The degree of sealing determines the shelf life. However, vacuum capping machines can have slight bending or sealing deviations when capping glass jars, resulting in a lack of vacuum inside the jars. This causes the canned goods to spoil even within their shelf life, affecting product quality and reputation. Manual inspection is inefficient, so an automated inspection line for canned goods is designed. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic inspection line for canned food. This invention automatically checks the vacuum level of each can on the production line and picks out inferior cans.

[0004] To achieve the above-mentioned objectives, the present invention adopts the following technical solution: An automated inspection line for canned food includes a conveyor belt for conveying cans from back to front along a first direction; the conveyor belt is provided sequentially from back to front with a limiting component for controlling the conveying of cans one by one, a positioning component for positioning cans, and a sorting component for sorting out substandard cans; the positioning component is provided with a vacuum inspection machine for detecting the vacuum degree of the cans.

[0005] Preferably, the limiting component includes a turntable, support plates on both sides of the conveyor belt, a horizontal plate on one side of the support plate, a flange below the turntable, the turntable and the flange are connected by fastening bolts, the turntable and the flange are located above the horizontal plate, a motor is located below the flange, the flange and the motor are fixedly connected, and the motor is fixed below the horizontal plate.

[0006] Preferably, the outer edge of the turntable is provided with multiple grooves that are adapted to the cans. The multiple grooves are connected end to end, the rear side of the groove is a sharp corner facing the can, and the front side of the groove is rounded.

[0007] Preferably, the conveyor belt is provided with limiting plates on both the left and right sides, and a number of adjusting components are provided on the rear side of the limiting plates. The adjusting components include uprights, collars and adjusting rods. The bottom of the uprights is fixedly connected to the support plate, and the collars are located on the uprights and can move up and down.

[0008] Preferably, one side of the collar has a locking ring, and the other side of the locking ring has a locking bolt. The adjusting rod is located inside the locking ring and is fixedly connected to the limiting plate.

[0009] Preferably, the positioning component includes a positioning cylinder, and a cylinder bracket is provided on the outside of the positioning cylinder, which is fixed to the support plate.

[0010] Preferably, the vacuum inspection machine includes a probe and a display screen.

[0011] Preferably, the sorting component includes an infrared sensor and an ejection cylinder, which are fixed sequentially on a support plate on one side of the conveyor belt. A waste platform is provided on the outer side of the support plate on the other side of the conveyor belt, and a baffle is provided at the edge of the waste platform.

[0012] Compared with existing technologies, the automated inspection line for canned goods that adopts the above-mentioned technical solution has the following beneficial effects: The automatic inspection line for canned food using this invention operates as follows: When the conveyor belt is started, the cans are transported from back to front. A limiting component moves one can to be inspected forward, while other cans are positioned behind the limiting component. A positioning component closes the forward passage of the conveyor belt. The cans to be inspected continue to be transported forward to one side of the positioning component and come into contact with it. A vacuum inspection machine checks the vacuum level of the cans. The positioning component opens, and the sorting component picks out the substandard cans. The compliant cans are transported to the next process. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the first angle of the automatic inspection line for canned food of this utility model.

[0014] Figure 2 This is a schematic diagram of the first and second angles of an automated inspection line for canned goods.

[0015] Figure 3 This is a top view of an automated inspection line for canned goods.

[0016] Reference numerals: 1. Conveyor belt; 2. Turntable; 21. Groove; 3. Flange; 4. Motor; 5. Support plate; 6. Limiting plate; 7. Adjusting component; 71. Upright pole; 72. Collar; 73. Adjusting rod; 8. Sorting component; 81. Infrared sensor; 82. Push-out cylinder; 83. Scrap table; 9. Vacuum inspection machine; 10. Positioning cylinder. Detailed Implementation

[0017] The present invention will now be further described with reference to the accompanying drawings.

[0018] like Figures 1 to 3As shown, an automated inspection line for canned goods includes a conveyor belt 1 for conveying cans from back to front along a first direction. The conveyor belt 1 is sequentially equipped with a limiting device for controlling the individual conveying of cans, a positioning device for can positioning, and a sorting component 8 for sorting substandard cans. A vacuum inspection machine 9 for detecting the vacuum level of the cans is installed on the positioning device. When the conveyor belt 1 starts, the cans are conveyed from back to front. The limiting device controls the forward conveying of cans one by one. The limiting device moves one can to be inspected forward, while the other cans are located behind the limiting device. The positioning device closes the forward passage of the conveyor belt 1. The can to be inspected continues to be conveyed forward to one side of the positioning device and abuts against it. The vacuum inspection machine 9 detects the vacuum level of the can. The positioning device opens, and the sorting component 8 picks out the substandard cans, while the compliant cans are conveyed to the next process.

[0019] The limiting components include a turntable 2, support plates 5 on both sides of the conveyor belt 1, a horizontal plate on one side of the support plate 5, and a flange 3 below the turntable 2. The turntable 2 and the flange 3 are connected by fastening bolts. The turntable 2 and the flange 3 are located above the horizontal plate. A motor 4 is located below the flange 3 and is fixedly connected to the flange 3. The motor 4 is fixed below the horizontal plate. To allow only one can to pass through at a time, the outer edge of the turntable 2 has multiple grooves 21 that fit the can. The multiple grooves 21 are connected end to end. To allow the grooves 21 to engage with the can, the rear side of the groove 21 is a sharp corner facing the can, and the front side of the groove 21 is rounded. Six grooves 21 are preferably provided. The motor 4 drives the turntable 2 to rotate one groove 21 by an angle of 60°. The sharp corner of the rear groove 21 is engaged with the side edge of the can and then into the groove 21. Since the groove 21 is arc-shaped, the distance between the front and rear sides of the groove 21 and the limiting plate 6 is smaller than the diameter of the can, so that the can is stuck in the groove 21 and cannot be conveyed forward, while the front groove 21 conveys the can to be tested forward.

[0020] The conveyor belt 1 has limiting plates 6 on both the left and right sides in the second direction. Several adjusting components 7 are located behind the limiting plates 6. Each adjusting component 7 includes a vertical rod 71, a collar 72, and an adjusting rod 73. The bottom of the vertical rod 71 is fixedly connected to the support plate 5. The collar 72 has an opening and is interference-fitted with the vertical rod 71, allowing it to move up and down on the vertical rod 71. A locking ring is located on one side of the collar 72, with a locking bolt on the same side. The adjusting rod 73 is located inside the locking ring and can move left and right. One end of the adjusting rod 73 is fixedly connected to the limiting plate 6. When the locking bolt on the locking ring is loosened, the adjusting rod 73 can move back and forth. By moving the adjusting rod 73, the width of the left and right limiting plates 6 is controlled, ensuring that the width of the limiting plates 6 matches the diameter of the can, thus restricting the left and right movement of the can and effectively protecting it.

[0021] The positioning component includes a positioning cylinder 10, whose extension shaft extends in the second direction, i.e., the middle of the conveyor belt 1. A cylinder bracket is provided on the outside of the positioning cylinder 10, and the cylinder bracket is fixed to the support plate 5. A vacuum inspection machine 9 is located above the extension shaft of the cylinder, and the vacuum inspection machine 9 includes a probe and a display screen. When the extension shaft of the positioning cylinder 10 extends, the conveyor belt transports the can to a point where it abuts against the extension shaft of the positioning cylinder 10 for limiting. At this time, the probe is located above the can lid. When the container passes the vacuum detection probe, the probe emits a shock wave that non-contactly impacts the top of the container lid. The lid emits a sound upon impact, and the sound is proportional to the vacuum level inside the container.

[0022] The vacuum inspection machine was purchased from Guangzhou Jiannuo Machinery Equipment Co., Ltd., and adopts a non-contact online inspection method. The inspection principle is based on acoustic technology and was developed by Guangzhou Jiannuo Machinery Equipment Co., Ltd. It can be used to detect quality defects in rigid-cap sealed containers caused by low pressure or insufficient vacuum.

[0023] The sorting component 8 includes an infrared sensor 81 and a push-out cylinder 82. The infrared sensor 81 and the push-out cylinder 82 are sequentially fixed on a support plate 5 on one side of the conveyor belt 1. A waste table 83 is provided on the outer side of the support plate 5 on the other side of the conveyor belt 1. The waste table 83 is opposite to the cylinder, and a baffle is provided on the edge of the waste table 83. The infrared sensor 81 and the push-out cylinder 82 face the second direction, i.e., the middle of the conveyor belt 1. After detection, the extension shaft of the positioning cylinder 10 retracts. The conveyor belt 1 transports the cans that have reached the vacuum level to the next process. The cans that have not reached the vacuum level are inferior cans. After a certain period of time after the infrared sensor 81 detects the can, the extension shaft of the push-out cylinder 82 quickly extends and pushes the can onto the waste table 83.

[0024] The above description is a preferred embodiment of the present utility model. For those skilled in the art, several modifications and improvements can be made without departing from the principle of the present utility model, and these should also be considered within the protection scope of the present utility model.

Claims

1. An automated inspection line for canned goods, comprising a conveyor belt (1) for conveying canned goods from back to front along a first direction; characterized in that, The conveyor belt (1) is provided with a limit device for controlling the conveying of cans one by one, a positioning device for positioning cans, and a sorting device (8) for sorting out inferior cans in sequence from back to front; the positioning device is provided with a vacuum inspection machine (9) for detecting the vacuum degree of cans.

2. The automated inspection line for canned goods according to claim 1, characterized in that, The limiting component includes a turntable (2), and support plates (5) are provided on both sides of the conveyor belt (1). A horizontal plate is provided on one side of the support plate (5). A flange (3) is provided below the turntable (2). The turntable (2) and the flange (3) are connected by fastening bolts. The turntable (2) and the flange (3) are located above the horizontal plate. A motor (4) is provided below the flange (3). The flange (3) and the motor (4) are fixedly connected. The motor (4) is fixed below the horizontal plate.

3. The automated inspection line for canned goods according to claim 2, characterized in that, The turntable (2) has multiple grooves (21) on its outer edge that are adapted to the cans. The multiple grooves (21) are connected end to end. The back side of the groove (21) is a sharp corner facing the can, and the front side of the groove (21) is rounded.

4. The automated inspection line for canned goods according to any one of claims 1-3, characterized in that, Limiting plates (6) are provided on both the left and right sides of the conveyor belt (1). Several adjusting components (7) are provided on the rear side of the limiting plates (6). The adjusting components (7) include uprights (71), collars (72) and adjusting rods (73). The bottom of the uprights (71) is fixedly connected to the support plate (5), and the collars (72) are located on the uprights (71) in a way that allows them to move up and down.

5. The automated inspection line for canned goods according to claim 4, characterized in that, The collar (72) has a locking ring on one side, and a locking bolt is provided on the other side of the locking ring. The adjusting rod (73) is located inside the locking ring and is fixedly connected to the limiting plate (6).

6. The automated inspection line for canned goods according to claim 2 or 5, characterized in that, The positioning component includes a positioning cylinder (10), and a cylinder bracket is provided on the outside of the positioning cylinder (10). The cylinder bracket is fixed on the support plate (5).

7. The automated inspection line for canned goods according to claim 6, characterized in that, The vacuum inspection machine (9) includes a probe and a display screen.

8. The automated inspection line for canned goods according to claim 7, characterized in that, The sorting component (8) includes an infrared sensor (81) and an ejection cylinder (82). The infrared sensor (81) and the ejection cylinder (82) are fixed in sequence on a support plate (5) on one side of the conveyor belt (1). A waste table (83) is provided on the outer side of the support plate (5) on the other side of the conveyor belt (1). A baffle is provided on the edge of the waste table (83).