Online detection device for cans

Abstract

The utility model discloses a can on-line detection device, including operating table, mounting groove, conveyor belt, a plurality of cans, a plurality of can seal cover, U-shaped frame, detection mechanism and sorting mechanism, the top of operating table is provided with mounting groove, conveyor belt is rotatingly installed in mounting groove, a plurality of cans are all arranged on conveyor belt and are evenly distributed, the sorting mechanism is provided with a plurality of can seal cover, U-shaped frame, detection mechanism and sorting mechanism. And the plurality of can sealing covers are fixedly mounted at the tops of the corresponding cans respectively. The device is reasonable in design and good in practicability, can cover a can sealing cover, then performs air suction, enables air pressure on two sides of the can sealing cover to be gradually balanced, reads an air pressure value in a can through a negative pressure sensor, judges whether the can 4 meets production requirements or not, accurately positions the can through two stop levers, and improves production efficiency. And the accuracy of online detection of the cans is improved, and the detected unqualified cans can be sorted, so that manual sorting is avoided, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of canned food online detection, in particular to a canned food online detection device. Background Art

[0002] After the cans are produced, they need to go through a series of tests before they can be put on the market, including the can vacuum test. Whether the can vacuum meets the specified requirements is related to the quality and shelf life of the cans. The can vacuum refers to the vacuum degree when the pressure inside the can is lower than 1 atmosphere. The reason why sealed canned food can be preserved for a long time is mainly due to vacuum and sealing. Sealing is the premise of ensuring vacuum. Therefore, the vacuum test of canned food is an important means to ensure the quality of canned food. It is a common method to identify the vacuum degree of the can by knocking on the can lid and listening to the sound. The accuracy of this identification method varies from person to person. The main reason is that the knocking sound is different from the can shape, packaging contents and can top gap size. It is completely based on human experience and is very difficult to master. In the prior art, the instruments for detecting the vacuum degree of cans, such as laser, infrared, ultrasonic and other devices, cannot fully adapt to the changes in the aforementioned can shape, packaging contents and can top gap size, and have certain limitations.

[0003] In response to the above problem, a Chinese patent announcement with announcement number CN209214867U discloses an online detection device for the vacuum degree of cans. The technical key points are: it includes a can channel and its screw pusher, a lifting suspension and a can pushing cylinder, and is characterized in that: the detection device is provided with a vacuum detection position, and the vacuum detection position is connected with the can channel outlet of the can vacuum inspection buffer zone, the vacuum detection position is provided with a closed container consisting of a base and a sealing cover connected to the lifting cylinder, the sealing cover is provided with a rubber sealing ring at the bottom edge, and an air nozzle is provided on the top, the air nozzle is connected to one end of the air intake control solenoid valve and the negative pressure sensor hose, and the other end of the solenoid valve is connected to the suction port of the vacuum pump.

[0004] In actual operation, it was found that the above scheme still has at least the following defects: each time the device performs a vacuum test on a can, the air in the entire sealing cover needs to be completely extracted. A large amount of air is extracted, resulting in a long extraction time, which in turn affects the detection efficiency of the device. Therefore, we propose an online can detection device to solve the above problem. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides an online can detection device, which solves the problem that each vacuum test on a can requires the air in the entire sealing cover to be completely extracted, and a large amount of extracted air leads to a long extraction time, which in turn affects the detection efficiency of the device.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an online canned food inspection device, comprising an operating table, a mounting groove, a conveyor belt, a plurality of canned food, a plurality of canned food caps, a U-shaped frame, a detection mechanism and a sorting mechanism, wherein a mounting groove is provided on the top of the operating table, the conveyor belt is rotatably installed in the mounting groove, a plurality of canned food caps are arranged on the conveyor belt and are evenly distributed, a plurality of canned food caps are respectively fixedly installed on the tops of the corresponding cans, the U-shaped frame is fixedly installed on the top of the operating table and is located above the conveyor belt, the detection mechanism and the sorting mechanism are both arranged on the U-shaped frame, the detection mechanism is used for performing vacuum detection on the canned food, and the sorting mechanism is used for sorting out unqualified canned food.

[0009] Preferably, the detection mechanism includes a hydraulic rod, a connecting pipe, a conical cover, a porous plate, a distance sensor, a negative pressure sensor, a vacuum pump, a hose and an air intake control solenoid valve, the hydraulic rod is fixedly mounted on the top inner wall of the U-shaped frame, the connecting pipe is fixedly mounted on the output shaft end of the hydraulic rod, the conical cover is fixedly mounted on the bottom end of the connecting pipe, the porous plate is fixedly mounted in the conical cover, the distance sensor is fixedly mounted at the bottom center of the porous plate, the negative pressure sensor is fixedly mounted on the bottom of the porous plate and is located on the left side of the distance sensor, the vacuum pump is fixedly mounted on the top inner wall of the U-shaped frame and is located on the right side of the hydraulic rod, the hose is fixedly mounted on the air intake end of the vacuum pump, the end of the hose away from the vacuum pump is fixedly connected to the connecting pipe, and the air intake control solenoid valve is fixedly mounted on the hose and is located on the right side of the connecting pipe.

[0010] Preferably, a rubber pad is fixedly mounted on the inner wall of the conical cover, and the rubber pad is in close contact with the can cover.

[0011] Preferably, the sorting mechanism includes a motor, a transmission rod, a sorting block, a fixed plate, a plurality of connecting rods and two guide rods. The motor is fixedly mounted on the top inner wall of the U-shaped frame and is located on the right side of the vacuum pump. The transmission rod is fixedly mounted on the output shaft end of the motor. The sorting block is fixedly mounted on the bottom end of the transmission rod. The fixed plate is fixedly mounted on the front and rear inner walls of the U-shaped frame and is located on the right side of the sorting block. The plurality of connecting rods are fixedly mounted on the bottom of the fixed plate. The two guide rods are respectively fixedly mounted on the bottom ends of the corresponding connecting rods and are symmetrically distributed.

[0012] Preferably, the sorting block is in a water droplet-shaped cone structure, the front and rear sides of the sorting block are both smooth surfaces, and the surfaces of the two guide rods are both smooth.

[0013] Preferably, electric push rods located below the conical cover are fixedly installed on the inner walls of the front and rear sides of the U-shaped frame, and hinge seats are fixedly installed on the output shaft ends of the two electric push rods. Baffle rods are rotatably installed on the two hinge seats through adjusting bolts, and the ends of the two baffle rods that are close to each other are in conflict.

[0014] Preferably, an observation window is provided on the front side of the U-shaped frame.

[0015] (III) Beneficial effects

[0016] The utility model provides a canned food online detection device, which has the following beneficial effects:

[0017] (1) The canned food online detection device can cover the canned food caps by utilizing a detection mechanism composed of a hydraulic rod, a connecting pipe, a conical cover, a porous plate, a distance sensor, a negative pressure sensor, a vacuum pump, a hose and an air intake control solenoid valve, and then suck air to gradually balance the air pressure on both sides of the canned food caps. The air pressure value in the canned food is read by the negative pressure sensor, and the canned food is accurately positioned by using two blocking rods, thereby improving the accuracy of the canned food online monitoring.

[0018] (2) The canned food online inspection device can sort out unqualified canned food by utilizing a sorting mechanism composed of a motor, a transmission rod, a sorting block, a fixing plate, a plurality of connecting rods and two guide rods, thereby avoiding manual sorting and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the cross-sectional structure of the main view of the utility model;

[0021] Figure 3 for Figure 2 A magnified schematic diagram of part A;

[0022] Figure 4 It is a schematic diagram of the cross-sectional structure of the utility model when viewed from above.

[0023] In the figure: 1. operating table; 2. mounting groove; 3. conveyor belt; 4. cans; 5. can capping; 6. U-shaped frame; 7. hydraulic rod; 8. connecting pipe; 9. conical cover; 10. porous plate; 11. distance sensor; 12. negative pressure sensor; 13. vacuum pump; 14. hose; 15. air intake control solenoid valve; 16. rubber cushion; 17. motor; 18. transmission rod; 19. sorting block; 20. fixing plate; 21. connecting rod; 22. guide rod; 23. electric push rod; 24. hinged seat; 25. stop rod; 26. observation window. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1-4 As shown, the utility model provides a technical solution: an online can detection device, comprising an operating table 1, a mounting slot 2, a conveyor belt 3, a plurality of cans 4, a plurality of can caps 5, a U-shaped frame 6, a detection mechanism and a sorting mechanism. The top of the operating table 1 is provided with a mounting slot 2, the conveyor belt 3 is rotatably installed in the mounting slot 2, the conveyor belt 3 is used to continuously convey the cans 4, and after the cans 4 are inspected, the qualified and unqualified cans 4 are respectively transported away for the next process, the plurality of cans 4 are arranged on the conveyor belt 3 and are evenly distributed, the plurality of can caps 5 are respectively fixedly installed on the tops of the corresponding cans 4, the U-shaped frame 6 is fixedly installed on the top of the operating table 1 and is located above the conveyor belt 3, the detection mechanism and the sorting mechanism are both arranged on the U-shaped frame 6, the detection mechanism is used to perform vacuum detection on the cans 4, the sorting mechanism is used to sort out the unqualified cans 4, and the above-mentioned sorting mechanism includes a motor 17, a transmission rod 18, a sorting block 19, A fixed plate 20, a plurality of connecting rods 21 and two guide rods 22, a motor 17 is fixedly mounted on the top inner wall of the U-shaped frame 6 and is located on the right side of the vacuum pump 13, the motor 17 is used to drive the transmission rod 18 to rotate, it should be noted that the motor 17 is a forward and reverse motor, the transmission rod 18 is fixedly mounted on the output shaft end of the motor 17, the sorting block 19 is fixedly mounted on the bottom end of the transmission rod 18, the sorting block 19 is used to sort the cans 4, the fixed plate 20 is fixedly mounted on the front and rear inner walls of the U-shaped frame 6 and is located on the right side of the sorting block 19, a plurality of connecting rods 21 are fixedly mounted on the bottom of the fixed plate 20, the two guide rods 22 are respectively fixedly mounted on the bottom ends of the corresponding connecting rods 21 and are symmetrically distributed, the two guide rods 22 are used to sort and divert qualified and unqualified cans 4, the sorting block 19 is a water droplet-shaped cone structure, the front and rear sides of the sorting block 19 are smooth surfaces, and the surfaces of the two guide rods 22 are smooth.

[0026] In this embodiment, an observation window 26 is provided on the front side of the above-mentioned U-shaped frame 6, and electric push rods 23 located below the conical cover 9 are fixedly installed on the inner walls on both the front and rear sides of the U-shaped frame 6. The two electric push rods 23 are used to control the two baffle rods 25 to accurately position the cans 4. The output shaft ends of the two electric push rods 23 are fixedly installed with hinged seats 24, and the baffle rods 25 are rotatably installed on the two hinged seats 24 through adjusting bolts. The angles of the two baffle rods 25 can be adjusted by using the two adjusting bolts, and then the positions of cans 4 of different sizes can be adjusted, thereby expanding the application scope of the detection device. It should be noted that touch sensors are provided on the two baffle rods 25, which are used to close the conveyor belt 3 when the cans 4 are touched, and the ends of the two baffle rods 25 that are close to each other collide with each other.

[0027] In this embodiment, the above-mentioned detection mechanism includes a hydraulic rod 7, a connecting pipe 8, a conical cover 9, a porous plate 10, a distance sensor 11, a negative pressure sensor 12, a vacuum pump 13, a hose 14 and an air intake control solenoid valve 15. The hydraulic rod 7 is fixedly mounted on the top inner wall of the U-shaped frame 6. The hydraulic rod 7 is used to control the conical cover 9 to move up and down to cover the canned cap 5. The connecting pipe 8 is fixedly mounted on the output shaft end of the hydraulic rod 7, the conical cover 9 is fixedly mounted on the bottom end of the connecting pipe 8, and the porous plate 10 is fixedly mounted in the conical cover 9. The porous plate 10 is used to install the fixed distance sensor 11 and the negative pressure sensor 12, and does not affect the vacuum pump 13 to extract air. The distance sensor 11 is fixedly mounted at the bottom center of the porous plate 10, the negative pressure sensor 12 is fixedly mounted at the bottom of the porous plate 10 and is located on the left side of the distance sensor 11, the vacuum pump 13 is fixedly mounted on the top inner wall of the U-shaped frame 6 and is located on the right side of the hydraulic rod 7, the hose 14 is fixedly mounted on the air inlet end of the vacuum pump 13, and the end of the hose 14 away from the vacuum pump 13 is fixedly connected to the connecting pipe 8, the air intake control solenoid valve 15 is fixedly mounted on the hose 14 and is located on the right side of the connecting pipe 8, and the air intake control solenoid valve 15 is used to avoid air backflow, and a rubber pad 16 is fixedly mounted on the inner wall of the conical cover 9, and the rubber pad 16 is in close contact with the can cover 5.

[0028] In this embodiment, a control switch is installed on the operating table 1, and the conveyor belt 3, hydraulic rod 7, distance sensor 11, negative pressure sensor 12, vacuum pump 13, air suction control solenoid valve 15, motor 16, two electric push rods 23 and the control switch are electrically connected to the external power line through wires in sequence to form a circuit. The control switch can control the start and stop of the conveyor belt 3, hydraulic rod 7, distance sensor 11, negative pressure sensor 12, vacuum pump 13, air suction control solenoid valve 15, motor 16, and two electric push rods 23 respectively. It should be noted that the distance sensor 11, negative pressure sensor 12 and air suction control solenoid valve 15 used in the present technical solution have been fully disclosed in the Chinese patent with announcement number CN209214867U, and their use and connection methods will not be repeated in this article.

[0029] Through the above structure, the utility model provides an online can detection device that can cover the can cap 5, and then suck air to gradually balance the air pressure on both sides of the can cap 5. The negative pressure sensor 12 reads the air pressure value in the can 4 to determine whether the can 4 meets the production requirements, and uses the two baffles 25 to accurately position the can 4, thereby improving the accuracy of online detection of the can 4, and can also sort out the unqualified cans 4 detected, thereby avoiding manual sorting and improving production efficiency. When used specifically, according to the size of the can 4 to be detected, the two baffles 25 are adjusted by two adjusting bolts so that the can 4 can be stopped just below the conical cover 9, thereby improving the accuracy of online monitoring of the can, and controlling the two electric push rods 23 to extend, drive the two baffles 25 to conflict with each other, and control the operation of the conveyor belt 3. When the first can 4 contacts the two baffles 25, the two touch sensors control the conveyor belt 3 to stop running, and the first can 4 stays at the conical cover 9. Directly below, the hydraulic rod 7 is controlled to extend, the conical cover 9 is controlled to move downward to cover the can cap 5 tightly, and the vacuum pump 13 is controlled to operate to extract a small amount of air above the can cap 5. Due to the small space and the short time for extracting air, the detection efficiency of the can 4 can be improved. The distance sensor 11 is used to determine whether the can cap 5 is flat, so as to control the operation of the vacuum pump 13 to make the air pressure on the upper and lower sides of the can cap 5 flat. The current air pressure value is measured by the negative pressure sensor 12. If the air pressure value is a negative value, it means that the air pressure in the can 4 is also a negative value, which meets the production requirements of the can 4. There is no need to change the position angle of the sorting block 19. After the can 4 is controlled to continue to move forward, the can 4 with qualified air pressure can be guided to the qualified side. If the air pressure value is a positive value, the can 4 is an unqualified can. The motor 17 is controlled to reverse to a fixed angle so that the detected can 4 is guided to the unqualified side, which is convenient for subsequent operations, effectively avoiding manual sorting, and greatly improving the detection and production efficiency.

[0030] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope recorded in the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A canned food online inspection device, characterized in that: The invention comprises an operating table (1), a mounting groove (2), a conveyor belt (3), a plurality of cans (4), a plurality of can caps (5), a U-shaped frame (6), a detection mechanism and a sorting mechanism. The top of the operating table (1) is provided with a mounting groove (2). The conveyor belt (3) is rotatably mounted in the mounting groove (2). The plurality of cans (4) are arranged on the conveyor belt (3) and are evenly distributed. The plurality of can caps (5) are respectively fixedly mounted on the tops of the corresponding cans (4). The U-shaped frame (6) is fixedly mounted on the top of the operating table (1) and is located above the conveyor belt (3). The detection mechanism and the sorting mechanism are both arranged on the U-shaped frame (6). The detection mechanism is used to perform vacuum detection on the cans (4). The sorting mechanism is used to sort out unqualified cans (4).

2. The canned food online inspection device according to claim 1, characterized in that: The detection mechanism comprises a hydraulic rod (7), a connecting pipe (8), a conical cover (9), a porous plate (10), a distance sensor (11), a negative pressure sensor (12), a vacuum pump (13), a hose (14) and an air intake control solenoid valve (15), wherein the hydraulic rod (7) is fixedly mounted on the top inner wall of the U-shaped frame (6), the connecting pipe (8) is fixedly mounted on the output shaft end of the hydraulic rod (7), the conical cover (9) is fixedly mounted on the bottom end of the connecting pipe (8), the porous plate (10) is fixedly mounted in the conical cover (9), and the distance sensor (11) is fixedly mounted At the bottom center of the porous plate (10), the negative pressure sensor (12) is fixedly mounted on the bottom of the porous plate (10) and is located on the left side of the distance sensor (11); the vacuum pump (13) is fixedly mounted on the top inner wall of the U-shaped frame (6) and is located on the right side of the hydraulic rod (7); the hose (14) is fixedly mounted on the air inlet end of the vacuum pump (13); one end of the hose (14) away from the vacuum pump (13) is fixedly connected to the connecting pipe (8); and the air intake control solenoid valve (15) is fixedly mounted on the hose (14) and is located on the right side of the connecting pipe (8).

3. The canned food online inspection device according to claim 2, characterized in that: A rubber cushion (16) is fixedly mounted on the inner wall of the conical cover (9), and the rubber cushion (16) is in close contact with the can cover (5).

4. The canned food online inspection device according to claim 2, characterized in that: The sorting mechanism comprises a motor (17), a transmission rod (18), a sorting block (19), a fixed plate (20), a plurality of connecting rods (21) and two guide rods (22); the motor (17) is fixedly mounted on the top inner wall of the U-shaped frame (6) and is located on the right side of the vacuum pump (13); the transmission rod (18) is fixedly mounted on the output shaft end of the motor (17); the sorting block (19) is fixedly mounted on the bottom end of the transmission rod (18); the fixed plate (20) is fixedly mounted on the front and rear inner walls of the U-shaped frame (6) and is located on the right side of the sorting block (19); the plurality of connecting rods (21) are fixedly mounted on the bottom of the fixed plate (20); and the two guide rods (22) are fixedly mounted on the bottom ends of the corresponding connecting rods (21) and are symmetrically distributed.

5. The canned food online inspection device according to claim 4, characterized in that: The sorting block (19) has a water droplet-shaped conical structure, the front and rear sides of the sorting block (19) are both smooth surfaces, and the surfaces of the two guide rods (22) are both smooth.

6. The canned food online inspection device according to claim 4, characterized in that: Electric push rods (23) located below the conical cover (9) are fixedly mounted on the inner walls on both the front and rear sides of the U-shaped frame (6); hinge seats (24) are fixedly mounted on the output shaft ends of the two electric push rods (23); stop rods (25) are rotatably mounted on the two hinge seats (24) via adjusting bolts; the ends of the two stop rods (25) that are close to each other abut against each other.

7. The canned food online inspection device according to claim 6, characterized in that: An observation window (26) is provided on the front side of the U-shaped frame (6).

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