A food packaging bag sealing performance testing and screening device

Abstract

This invention relates to the field of food packaging bag testing equipment, specifically a food packaging bag sealing performance testing and screening device. It includes a housing, with a transmission belt movably mounted on the right side of the housing. Two plates, Plate 1 and Plate 2, are fixedly connected to the outside of a clamping turntable. A movable rod is movably mounted inside Plate 1, and a clamping plate is movably mounted on the outer side of Plate 1 near Plate 2. One end of the movable rod, extending out of the interior of Plate 1, is hinged to a pull rod. The clamping plate, with one end facing the outside of the clamping turntable, is hinged to the outer side of Plate 1. Rubber pads are mounted on the corresponding sides of the clamping plates on Plate 1 and Plate 2 to clamp and continuously compress sealed packaging bags on the conveyor belt. As the clamping turntable rotates, packaging bags with acceptable sealing performance move onto the discharge conveyor belt and are released. Packaging bags with unacceptable sealing performance leak under continuous compression, causing them to lose their shape and fall into the discharge channel for discharge.

Description

Technical Field

[0001] This invention relates to the field of food packaging bag testing equipment, specifically a food packaging bag sealing performance testing and screening device. Background Technology

[0002] Powdered foods are susceptible to moisture, necessitating sealed packaging during production. After production, they are further packaged to protect the food while maintaining its appearance, preventing damage from external factors during the journey from the factory to the consumer.

[0003] Existing food packaging bag inspection devices, such as the Chinese utility model publication CN217023157U, relate to a food packaging bag sealing quality inspection device. This device includes a coordinated design of an inspection frame, a support frame, an inspection mechanism, a belt conveyor, and a screening and rejection mechanism. The inspection mechanism effectively inspects the sealed packaging bags, while the screening and rejection mechanism filters out substandard, leaking bags, facilitating operation and significantly increasing work efficiency. Through the coordinated design of a lifting plate, an electric push rod, a sliding rod, a fixed block, and a signal transmission switch, when a leaking bag is found, the lifting plate continuously moves downwards, squeezing out the gas inside the bag, indicating a leak and thus a substandard product. At this time, the fixed block presses down on the signal transmission switch, which transmits a signal to an external controller, allowing the controller to activate the screening and rejection mechanism.

[0004] Most existing food packaging bag inspection devices use fixed extrusion devices to test the sealing of packaging bags. This requires the packaging bags running on the conveyor belt to stop intermittently in sync with the rhythm of the inspection device, which affects the overall food production efficiency. Furthermore, existing inspection devices tend to squeeze out the contents of powdered food packaging bags after extruding them, which can contaminate the conveyor and the outer side of subsequent packaging bags, thus affecting the aesthetic appearance of the finished packaging bags. Summary of the Invention

[0005] A food packaging bag sealing test and screening device is disclosed. This device can perform moving sealing tests on packaging bags as the conveyor belt operates, so as not to affect the overall food production efficiency. It can also clean up any leaks that occur during the test to avoid contaminating subsequent packaging bags.

[0006] A food packaging bag sealing performance testing and screening device includes a housing. A transmission belt is movably mounted on the right side of the housing. A first plate and a second plate are fixedly connected to the outer side of a material clamping turntable. A movable rod is movably mounted inside the first plate. A clamping plate is movably mounted on the outer side of the first plate near the second plate. One end of the movable rod, extending out of the interior of the first plate, is hinged to a pull rod. Multiple first and second plates are continuously and equidistantly arranged around the outer circumference of the material clamping turntable. The upper center of the material clamping turntable extends upwards and penetrates the inner wall of the housing. The end is equipped with a drive motor. A fixed plate is installed inside the clamping turntable. A fixed rod is fixedly connected to the middle of the upper side of the fixed plate. Protrusions are provided on the upper and lower sides of the end of the moving rod that enters the fixed plate. A groove and a slot are opened on the upper and lower sides of the moving rod on the inner side of the fixed plate. A discharge channel is opened at the lower end of the housing. A lower pressure plate is movably installed inside the housing corresponding to the lower end of the clamping turntable. An air outlet is opened on the outer side of the clamping turntable between the first plate and the second plate. An air guide plate is connected to the outer side of the lower pressure plate.

[0007] Preferably, the end of the clamping plate facing the outside of the clamping turntable is hinged to the outside of the plate, and the moving rod is L-shaped with one end extending out of the interior of the plate.

[0008] Preferably, the end of the pull rod away from the moving rod is hinged to the outside of the clamping plate, and the second plate is provided with a clamping plate and a connecting rod with the same structure as the first plate.

[0009] Preferably, the upper end of the fixing rod extends upward through the inside of the clamping turntable and is fixedly connected to the inner side of the housing, and the vertical side edge of the fixing plate is recessed inward.

[0010] Preferably, the first groove is provided with an arc segment one, the arc radius of the first arc segment one is smaller than the arc radius of the first groove, and the second groove is provided with an arc segment two, the arc radius of the second arc segment two is smaller than the arc radius of the second groove.

[0011] Preferably, a rotating cylinder is provided at the lower center of the clamping turntable, and an inclined triangular notch is provided at the lower end of the rotating cylinder. The upper end of the lower pressure plate is cylindrical and is provided with the same inclined triangular notch as the lower end of the rotating cylinder.

[0012] Preferably, the lower end of the pressure plate is connected to an airbag, and the upper and lower ends of the airbag are provided with one-way air valves. The upper end of the airbag is connected to the interior of the pressure plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. A transmission belt is movably installed on the right side of the housing, with one end of the belt entering the housing. A discharge conveyor belt is also installed on the rear side of the housing. A clamping turntable is movably installed in the middle of the housing, with the horizontal height of the clamping turntable being higher than the housing. Plate 1 and Plate 2 are fixedly connected to the outside of the clamping turntable. A moving rod is movably installed inside Plate 1. A clamping plate is movably installed on the outer side of Plate 1 near Plate 2. The end of the clamping plate facing the outside of the clamping turntable is hinged to the outer side of Plate 1. Rubber pads are installed on the corresponding sides of the clamping plates on Plate 1 and Plate 2, which clamp the sealed packaging bags on the conveyor belt and continuously squeeze them. As the clamping turntable rotates, the packaging bags with qualified sealing are moved to the discharge conveyor belt and are released, while the packaging bags with unqualified sealing leak under continuous compression, causing them to lose their shape and fall into the discharge channel for discharge. This achieves the effect of screening out unqualified products after monitoring.

[0015] 2. The clamping turntable extends upwards from the middle of its upper end and penetrates the inner wall of the housing. A fixed plate is installed inside the clamping turntable, and a fixed rod is fixedly connected to the middle of the upper side of the fixed plate. The vertical side edge of the fixed plate is recessed inwards. One end of the moving rod penetrates the interior of the clamping turntable and extends inwards into the inner side of the fixed plate. Protrusions are provided on the upper and lower sides of the end of the moving rod that enters the fixed plate. The protrusions are circular. The inner side of the fixed plate has a groove and a slot on the upper and lower sides of the moving rod. When the clamping turntable rotates, the protrusions on the moving rod can move within the grooves. When the protrusions move onto the arc segments one and two on the grooves, the clamping plates on the plates open. This achieves the effect of using the rotation of the clamping turntable to continuously squeeze and clamp the packaging bag.

[0016] 3. A lower pressure plate is movably installed at the lower end of the clamping turntable inside the housing. A rotating cylinder is set in the middle of the lower end of the clamping turntable, and an inclined triangular notch is set at the lower end of the rotating cylinder. The upper end of the lower pressure plate is cylindrical and has the same inclined triangular notch as the lower end of the rotating cylinder. The upper end of the lower pressure plate fits into the lower end of the rotating cylinder. An air bladder is connected to the lower end of the lower pressure plate. One-way air valves are set at both ends of the air bladder, so that the airflow generated by the compression of the air bladder can be ejected upward into the air guide plate and then ejected upward through the opening of its upper extension. After entering the corresponding air channel, it is ejected from the air outlet and acts on the packaging bag between the clamping plates, so as to blow the powder contents squeezed out of the leaking packaging bag away from the upper end of the clamping plates, thereby avoiding contamination of the subsequent packaging tape. Attached Figure Description

[0017] Figure 1 This is a front view of the overall device of the present invention;

[0018] Figure 2 This is a perspective view of the interior of the casing of the present invention;

[0019] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 This is a top perspective view of the material clamping turntable of the present invention;

[0021] Figure 5 For the present invention Figure 4 Enlarged view at point B in the middle;

[0022] Figure 6 This is a top view of the air guide plate of the present invention;

[0023] Figure 1-6 In the middle: 1-shell, 2-conveyor belt, 3-discharge channel, 4-clamping turntable, 5-fixed plate, 6-plate one, 7-moving rod, 8-slot one, 9-slot two, 10-fixed rod, 11-air outlet, 12-protrusion, 13-air guide plate, 14-rotating drum, 15-lower pressure plate, 16-airbag, 17-clamping plate, 18-plate two, 19-pull rod, 20-arc section one, 21-arc section two. Detailed Implementation

[0024] Please see Figures 1 to 6 A schematic diagram of the planar structure and a schematic diagram of the three-dimensional structure of a food packaging bag sealing test and screening device.

[0025] In the specific implementation, a transmission belt 2 is movably installed on the right side of the housing 1. One end of the transmission belt 2 enters the interior of the housing 1. A discharge transmission belt is also installed on the rear side of the housing 1. A clamping turntable 4 is movably installed in the middle of the interior of the housing 1. The horizontal height of the clamping turntable 4 is higher than that of the clamping turntable 4. Plate 1 6 and Plate 2 18 are fixedly connected to the outside of the clamping turntable 4. Plate 1 6 and Plate 2 18 are arranged adjacent to each other and one end extends outward away from the clamping turntable 4.

[0026] In the specific implementation, a movable rod 7 is movably installed inside the plate 6, and a clamping plate 17 is movably installed on the outer side of the plate 6 near the plate 2 18. The end of the clamping plate 17 facing the outer side of the material clamping turntable 4 is hinged to the outer side of the plate 6. The movable rod 7 is L-shaped and one end extends out of the interior of the plate 6. A cavity is opened inside the plate 6 for the movable rod 7 to move, and a spring is installed inside the cavity.

[0027] In the specific implementation, the end of the moving rod 7 that protrudes from the interior of the first plate 6 is hinged to a pull rod 19. The end of the pull rod 19 that is away from the moving rod 7 is hinged to the outside of the clamping plate 17. The second plate 18 is provided with a clamping plate 17 and a connecting rod 7 with the same structure as the first plate 6. A rubber pad is installed on the side of the clamping plate 17 on the first plate 6 and the second plate 18, respectively. One side of the rubber pad is arc-shaped and concave, and the other side is connected to the clamping plate 17 through a spring.

[0028] In specific implementation, multiple plates 6 and 18 are continuously and equidistantly arranged on the outer circumference of the clamping turntable 4. The upper middle part of the clamping turntable 4 extends upward and penetrates into the inner wall of the housing 1. The top of the upward extension of the clamping turntable 4 is disc-shaped and extends outward. The housing 1 has a cavity that wraps around the upper extension of the clamping turntable 4. A drive motor is installed inside the upper part of the housing 1. A transmission gear is installed at the lower end of the drive motor. Gear teeth that mesh with the transmission gear are installed on the outer side of the upward extension of the clamping turntable 4.

[0029] In specific implementation, a fixed plate 5 is installed inside the clamping turntable 4. A fixed rod 10 is fixedly connected to the middle of the upper side of the fixed plate 5. The upper end of the fixed rod 10 extends upward and passes through the inside of the clamping turntable 4 and is fixedly connected to the inner side of the shell 1. The fixed plate 5 is disc-shaped and the vertical side edge of the fixed plate 5 is recessed inward.

[0030] In the specific implementation, one end of the moving rod 7 is inserted into the inside of the clamping turntable 4 and extends inward into the inside of the fixed plate 5. The upper and lower sides of the end of the moving rod 7 that enters the fixed plate 5 are provided with protrusions 12, which are circular. The inner side of the fixed plate 5 has a groove 8 and a second groove 9 on the upper and lower sides of the moving rod 7. The first groove 8 and the second groove 9 are annular grooves, so the first groove 8 and the second groove 9 are concentric circles and the diameter of the second groove 9 is larger than the diameter of the first groove 8.

[0031] In specific implementation, an arc segment 20 is provided on the first slot 8, and the radius of the arc surface of the arc segment 20 is smaller than the radius of the arc surface of the first slot 8. An arc segment 21 is provided on the second slot 9, and the radius of the arc surface of the arc segment 21 is smaller than the radius of the arc surface of the second slot 9. The outer end of the protrusion 12 on the moving rod 7 inside the first plate 6 enters the interior of the second slot 9, and the outer end of the protrusion 12 on the moving rod 7 inside the second plate 18 enters the interior of the first slot 8.

[0032] In specific implementation, a discharge channel 3 is provided at the lower end of the shell 1, and the discharge channel 3 is connected to the outside of the shell 1. A lower pressure plate 15 is movably installed inside the shell 1 corresponding to the lower end of the clamping turntable 4. A rotating cylinder 14 is provided in the middle of the lower end of the clamping turntable 4. An inclined triangular notch is provided at the lower end of the rotating cylinder 14. The upper end of the lower pressure plate 15 is cylindrical and has the same inclined triangular notch as the lower end of the rotating cylinder 14. The upper end of the lower pressure plate 15 fits against the lower end of the rotating cylinder 14.

[0033] In specific implementation, an air outlet 11 is provided on the outer side of the clamping turntable 4 between the first plate 6 and the second plate 18. An air passage is provided inside the clamping turntable 4 at the position corresponding to the air outlet 11. The lower end of the air passage extends downward and connects to the outside of the clamping turntable 4. An air guide plate 13 is connected to the outer side of the lower pressure plate 15. The air guide plate 13 is fan-shaped, and one side of the arc edge of the air guide plate 13 extends vertically upward.

[0034] In specific implementation, the air guide plate 13 is hollow inside, and the lower end of the lower pressure plate 15 is connected to the air bag 16. One-way air valves are provided at both the upper and lower ends of the air bag 16, and the upper end of the air bag 16 is connected to the interior of the lower pressure plate 15.

[0035] The working principle of the food packaging bag sealing performance testing and screening device of the present invention is as follows.

[0036] Firstly, a transmission belt 2 is movably installed on the right side of the housing 1. One end of the transmission belt 2 enters the interior of the housing 1. A discharge transmission belt is also installed on the rear side of the housing 1. A clamping turntable 4 is movably installed in the middle of the interior of the housing 1. The horizontal height of the clamping turntable 4 is higher than that of the housing 1. Plate 6 and Plate 18 are fixedly connected to the outside of the clamping turntable 4. Plate 6 and Plate 18 are adjacent to each other and one end extends outward away from the clamping turntable 4. A moving rod 7 is movably installed inside Plate 6. A clamping plate 17 is movably installed on the outer side of Plate 6 near Plate 18. The end of the clamping plate 17 facing the outside of the clamping turntable 4 is hinged to the outer side of Plate 6. A rubber pad is installed on the corresponding side of the clamping plate 17 on Plate 6 and Plate 18. One side of the rubber pad is arc-shaped and concave, and the other side is connected to the clamping plate 17 by a spring. When the clamping plates 17 are connected, and plates 11 and 18 move above the conveyor belt 2, they can drive the two clamping plates 17 to move closer together, allowing the rubber pads to clamp the sealed packaging bags on the conveyor belt 2 and continuously squeeze them. Then, as the clamping turntable 4 makes a circular motion, the packaging bags with qualified sealing can move with the clamping turntable to the discharge conveyor belt and be put down, while the packaging bags with unqualified sealing will leak under continuous compression, causing them to lose their shape and be unable to be clamped by the clamping plates 17. They will then fall downward into the discharge channel 3 and be discharged outward. Then, the upper middle part of the clamping turntable 4 is set to extend upward and penetrate into the inner wall of the housing 1. The clamping turntable 4 has a fixed plate 5 installed inside, and a fixed rod 10 is fixedly connected to the upper middle part of the fixed plate 5. The upper end extends upward through the inside of the clamping turntable 4 and is fixedly connected to the inner side of the housing 1, so that when the drive motor drives the clamping turntable 4 to rotate, the fixed plate 10 can remain fixed. The vertical side edge of the fixed plate 5 is recessed inward. One end of the moving rod 7 passes through the inside of the clamping turntable 4 and extends inward into the inner side of the fixed plate 5. The upper and lower sides of the end of the moving rod 7 that enters the fixed plate 5 are provided with protrusions 12, which are circular. The inner side of the fixed plate 5 has a groove 8 and a second groove 9 on the upper and lower sides of the moving rod 7. The first groove 8 and the second groove 9 are annular grooves, so the first groove 8 and the second groove 9 are concentric circles. An arc segment 20 is provided on the first groove 8, and the radius of the arc segment 20 is smaller than the radius of the arc surface of the first groove 8. An arc segment 20 is provided on the second groove 9. 1. The radius of the arc surface of the second arc segment 21 is smaller than the radius of the arc surface of the second groove 9. The outer end of the protrusion 12 on the moving rod 7 inside the first plate 6 enters the second groove 9, and the outer end of the protrusion 12 on the moving rod 7 inside the second plate 18 enters the first groove 8. This allows the protrusion 12 on the moving rod 7 to move inside the first groove 8 and the second groove 9 when the clamping turntable 4 rotates. When the protrusion 12 reaches the arc segment 20 and the arc segment 21 on the first groove 8 and the second groove 9, it can drive the protrusion 12 to move towards the side closer to the middle, thereby driving the moving rod 7 to move into the clamping turntable 4. The moving rod 7 pulls the pull rod 19, which drives the clamping plate 17 to rotate, achieving the effect of opening the clamping plate 17 on the first plate 6 and the second plate 18. As the clamping turntable 4 continues to rotate, the protrusion 12 leaves the arc segment.The rotating disc 4 drives the moving rod 7 to extend outward, achieving the effect of continuously squeezing and clamping the packaging bag by rotating the clamping disc 4 and driving the clamping plate 17. Then, a lower pressure plate 15 is movably installed inside the housing 1 corresponding to the lower end of the clamping disc 4. A rotating cylinder 14 is located in the middle of the lower end of the clamping disc 4, and the lower end of the rotating cylinder 14 has an inclined triangular notch. The upper end of the lower pressure plate 15 is cylindrical and has the same inclined triangular notch as the lower end of the rotating cylinder 14. The upper end of the lower pressure plate 15 fits against the lower end of the rotating cylinder 14. An air bladder 16 is connected to the lower end of the lower pressure plate 15. One-way air valves are located at both ends of the air bladder 16. The upper end of the air bladder 16 is connected to the interior of the lower pressure plate 15. When the clamping disc 4 rotates, the inclined surface of the notch on the rotating cylinder 14 applies force to the inclined surface of the notch on the lower pressure plate 15, causing the lower pressure plate 15 to... The airbag 16 is intermittently moved downwards to compress it. An air outlet 11 is provided between plates 6 and 18 on the outer side of the clamping turntable 4. An air passage is provided inside the clamping turntable 4 at the position corresponding to the air outlet 11. The lower end of the air passage extends downwards and connects to the outside of the clamping turntable 4. An air guide plate 13 is connected to the outer side of the lower pressure plate 15. The air guide plate 13 is fan-shaped, with one side of its arc-shaped edge extending vertically upwards. The air guide plate 13 is hollow, allowing the airflow generated by the compression of the airbag 16 to be ejected upwards into the air guide plate 13 and then ejected upwards through the opening of its upper extension. After entering the corresponding air passage, it is ejected from the air outlet 11 and acts on the packaging bag between the clamping plates 17. This effectively blows the powder contents squeezed out of the leaking packaging bag away from the upper end of the clamping plates 17, preventing contamination of subsequent packaging tapes.

Claims

1. A food packaging bag sealing performance testing and screening device, comprising a housing (1), characterized in that: A conveyor belt (2) is installed on the outside of the housing (1). A discharge channel (3) is opened at the lower end of the inside of the housing (1). A clamping turntable (4) is set inside the housing (1). A plate 1 (6) and a plate 2 (18) are set on the outside of the clamping turntable (4). A fixed plate (5) is set inside the clamping turntable (4). A fixed rod (10) is set at the middle of the upper side of the fixed plate (5). A clamping plate (17) is set on the outside of the plate 1 (6) and the plate 2 (18). The clamping plate (17) can rotate outward with the rotation of the clamping turntable (4). An air vent (11) is opened on the outside of the clamping turntable (4). A lower pressure plate (15) is set inside the housing (1) corresponding to the lower end of the clamping turntable (4). An air bag (16) is set at the lower end of the lower pressure plate (15).

2. The food packaging bag sealing performance testing and screening device according to claim 1, characterized in that: Both the first plate (6) and the second plate (18) are equipped with a movable rod (7). The movable rod (7) is L-shaped and one end extends outward. The end of the movable rod (7) extending outward is connected to a pull rod (19). The other end of the pull rod (19) is connected to the outside of the clamping plate (17).

3. The food packaging bag sealing performance testing and screening device according to claim 2, characterized in that: One end of the moving rod (7) is inserted into the inside of the clamping turntable (4) and extends inward into the inside of the fixed plate (5). Protrusions (12) are provided on the upper and lower sides of one end of the moving rod (7). A groove (8) and a second groove (9) are opened on the upper and lower sides of the moving rod (7) on the inner side of the fixed plate (5). The outer end of the protrusion (12) on the moving rod (7) inside the first plate (6) enters the second groove (9). The outer end of the protrusion (12) on the moving rod (7) inside the second plate (18) enters the first groove (8).

4. The food packaging bag sealing performance testing and screening device according to claim 3, characterized in that: An arc segment 1 (20) is provided on the first groove (8), the arc radius of the arc segment 1 (20) is smaller than the arc radius of the first groove (8), and an arc segment 2 (21) is provided on the second groove (9), the arc radius of the arc segment 2 (21) is smaller than the arc radius of the second groove (9).

5. The food packaging bag sealing performance testing and screening device according to claim 1, characterized in that: A rubber pad is provided on one side of the upper clamping plate (17) of the first plate (6) and the second plate (18), and one side of the rubber pad is set in an arc-shaped concave shape.

6. The food packaging bag sealing performance testing and screening device according to claim 1, characterized in that: The lower middle part of the clamping turntable (4) is provided with a rotating cylinder (14), and the lower end of the rotating cylinder (14) is provided with an inclined triangular notch. The upper end of the lower pressure plate (15) is provided with the same inclined triangular notch as the lower end of the rotating cylinder (14).

7. The food packaging bag sealing performance testing and screening device according to claim 1, characterized in that: An air guide plate (13) is connected to the outside of the lower pressure plate (15), and one-way air valves are provided at the upper and lower ends of the airbag (16). The upper end of the airbag (16) is connected to the inside of the lower pressure plate (15).

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