Food package air leakage detection equipment

Abstract

A food package air leakage detection device provided by the present invention comprises a rack, a first conveying device and a second conveying device are symmetrically arranged along the width direction of the rack, the surface of the first conveying device is provided with a fixedly connected detection device, the detection device is provided with a detection box, and the detection box is provided with a fixedly connected extrusion device. A rotating device connected with the rack is arranged between the first conveying device and the second conveying device, the rotating device is provided with a mounting plate, a lifting clamping device is arranged below the mounting plate, and the lifting clamping device comprises a fixing plate, a lifting component and a plurality of clamping components; the detection box in the detection device is provided with a plurality of placement grooves, each placement groove corresponds to one package, the extrusion device extrudes the packages through the extrusion air bag, simultaneous detection of the multiple packages is achieved, and the detection accuracy is improved through sealing and covering of a sealing rubber plate and the detection box and measurement of an air pressure sensor. Whether the package leaks air or not can be accurately judged, so that the detection accuracy and the working efficiency are improved.

Description

Technical Field

[0001] The invention relates to the technical field of food production equipment, in particular to food packaging air leakage detection equipment. Background Art

[0002] When packaging fragile and easily deformed foods, it is necessary to inflate the food packaging. The inflation in the food packaging is mainly to inflate the protective gas. On the one hand, it can extend the shelf life of the food and protect the food quality. On the other hand, it can prevent extrusion and maintain the shape of the food. Specifically, for puffed foods, bread, cakes and other fragile or easily deformed foods, the inflatable packaging can provide a buffering effect to prevent the food from being squeezed and damaged during transportation and storage, thereby maintaining the original shape of the food and avoiding deformation of the food due to squeezing in the packaging. When using food inflation equipment to inflate the food packaging, the air in the package is generally extracted by the vacuum mechanism first, and then the protective gas is filled in by the inflation mechanism, and then the heat sealing mechanism heat-seals the inflation port. After the inflation is completed, the food packaging needs to be tested for air leakage to ensure that the protective gas will not leak and make its protective effect ineffective.

[0003] Based on the above situation, in the prior art, a patent with publication number CN116809453B discloses a food packaging bag leakage detection machine, including a processing table; a support frame is fixedly connected to one side of the processing table, and the support frame is L-shaped; by starting the first hydraulic cylinder, the mounting shell and the airbag are pushed downward until the airbag pushes the packaging bag downward, and the qualified packaging bag will push the two groups of top plates downward after being subjected to the pressure of the airbag. After the thrust of the airbag on the packaging bag exceeds the bearing capacity of the counterweight block, the two groups of top plates and the counterweight block are driven to rotate downward through the rotating shaft. When the bottom of the airbag approaches the top of the processing table, the gap between the two groups of top plates will be larger than the area of ​​the packaging bag, so that the packaging bag falls into the processing table, which is convenient for collecting qualified packaging bags. Because the airbag is shrinkable and the top plate can move downward when subjected to force, the packaging bag can be prevented from rupturing when squeezed, thereby solving the problem that the food packaging bag is prone to rupture during testing.

[0004] However, the detection machine in the above patent still has shortcomings when in use. When checking for air leaks, the above detection machine can only check food packages one by one, which makes the air leak detection efficiency of the equipment insufficient. At the same time, during the detection process, the packaging bag needs to be squeezed into the gap between the two sets of top plates through the airbag, and the top plate may scratch the packaging bag, causing the bag to burst during the squeezing process. Summary of the invention

[0005] In view of the technical defects existing in the background technology, the present invention proposes a food packaging air leakage detection device. In order to further solve the above technical problems and meet practical needs, the specific technical solution is as follows: A food packaging air leakage detection device comprises a frame, wherein the frame is connected with a first conveying device and a second conveying device which are parallel to each other, the first conveying device and the second conveying device are symmetrically arranged along the width direction of the frame, a fixedly connected detection device is arranged on the surface of the first conveying device, the detection device is provided with a plurality of detection boxes which are equidistantly arranged along the length direction of the first conveying device, a plurality of placement slots are equidistantly arranged inside the detection box, the detection box is provided with a fixedly connected extrusion device, a rotating device connected to the frame is arranged between the first conveying device and the second conveying device, the rotating device is provided with a rotating disk, the left and right sides of the rotating disk are symmetrically connected with mounting plates, a lifting and clamping device is provided below the mounting plate, the lifting and clamping device comprises a fixed plate, a lifting component and a plurality of clamping components, the lifting component is respectively connected to the upper surface of the fixed plate and the upper surface of the mounting plate, the clamping component is connected to the lower surface of the fixed plate and is equidistantly arranged along the length direction of the fixed plate, the clamping component is correspondingly arranged above the placement slot, and the number of the placement slots and the clamping components corresponds one to one.

[0006] Furthermore, the first conveying device includes a first motor, a first transmission roller and a first conveyor belt, the first transmission roller is symmetrically installed at the front and rear ends of the frame, the first transmission roller located at the front end of the frame is connected to the power output shaft of the first motor, and the first conveyor belt is arranged on the outside of the first transmission roller, and the second conveying device includes a second motor, a second transmission roller and a second conveyor belt, the second transmission roller is symmetrically installed at the front and rear ends of the frame, the second transmission roller located at the front end of the frame is connected to the power output shaft of the second motor, and the second conveyor belt is arranged on the outside of the second transmission roller.

[0007] Furthermore, the rotating device also includes a rotating column and a third motor, which are arranged below the rotating disk and are respectively connected to the frame, the upper end of the rotating column is connected to the lower surface of the rotating disk, and the lower end of the rotating column is connected to the power output shaft of the third motor.

[0008] Furthermore, the lifting component includes a mounting block, a fourth motor, a bidirectional threaded rod, a threaded sleeve and a connecting rod. The mounting block is symmetrically arranged on the lower surface of the mounting plate, and the two ends of the bidirectional threaded rod are respectively connected to the mounting blocks near the ends. The end of one end of the bidirectional threaded rod is connected to the power output shaft of the fourth motor. The surface of the bidirectional threaded rod is provided with reverse threads. The threaded sleeve is symmetrically and movably sleeved on the surface of the bidirectional threaded rod. A connecting rod is correspondingly arranged for the threaded sleeve, and the two ends of the connecting rod are respectively hinged to the threaded sleeve and the fixed plate.

[0009] Furthermore, the detection device also includes a sealing rubber plate, an air pressure sensor, and a controller arranged on the lower surface of the fixed plate. The lower surface of the sealing rubber plate is provided with a sealing groove with the same shape as the top of the detection box, and the sealing rubber plate can be sealed and covered on the top of the detection box through the sealing groove. The air pressure sensor is arranged on the lower surface of the sealing rubber plate and corresponds to the position of the placement groove respectively. The controller is arranged on the side close to the first conveying device and is connected to the frame. The bottom of the detection box is provided with a fixed horizontal plate, and the bottom of the detection box is connected to the first conveyor belt through the fixed horizontal plate.

[0010] Furthermore, the clamping component includes a clamping plate, a sliding column, a sliding sleeve, a telescopic electric cylinder, a sliding block, a connecting column, and a clamping claw plate. The sliding column is vertically arranged at the center position of the upper surface of the clamping plate, the sliding sleeve is movably sleeved on the outside of the sliding column, the telescopic electric cylinder is arranged below the sliding sleeve, the telescopic end of the telescopic electric cylinder is connected to the lower surface of the sliding sleeve, the cylinder body end of the telescopic electric cylinder is connected to the upper surface of the clamping plate, the inside of the clamping plate is symmetrically provided with sliding blocks along the length direction and the width direction, the inside of the clamping plate is provided with a sliding groove that can slide with the sliding block, the lower surface of the sliding block is connected to the clamping claw plate, the connecting columns are respectively arranged between the sliding block and the sliding sleeve, and the two ends of the connecting column are respectively hinged to the sliding block and the sliding sleeve.

[0011] Furthermore, the extrusion device includes an extrusion airbag, a connecting air pipe, an air pump, an electronic air release valve, and a clamping channel. The extrusion airbags are respectively arranged at the four corner positions of the placement groove, and a clamping channel is formed on the inner wall of the placement groove between adjacent extrusion airbags. The connecting air pipe is arranged at the bottom of the outer side of the detection box, and the extrusion airbags are respectively connected to the connecting air pipe, and the two ends of the connecting air pipe are respectively connected to the air pump and the electronic air release valve.

[0012] The beneficial effects of the present invention are: The present invention realizes continuous and automatic conveying of food packages through the cooperation of the first conveying device and the second conveying device, and effectively improves the efficiency of air leakage detection. The detection box in the detection device is provided with multiple placement slots, each placement slot corresponds to a package, and the extrusion device squeezes the package by extruding the airbag, thereby realizing simultaneous detection of multiple packages. Through the sealing cover of the sealing rubber plate and the detection box, and the measurement of the air pressure sensor, it can be accurately determined whether there is an air leakage in the package, thereby improving the accuracy of detection. The clamping component can clamp the leaking packaging bag out of the placement slot and place it on the surface of the second conveyor belt through the cooperation of the rotating device, thereby realizing automatic picking out of the leaking packaging bag, thereby reducing manual intervention and further improving the efficiency of air leakage detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0014] Figure 2 It is an internal cross-sectional view of the present invention.

[0015] Figure 3 For along Figure 2 A partial enlarged view of the AA area in the middle.

[0016] Figure 4 For along Figure 2 A partial enlarged view of the middle BB.

[0017] Figure 5 It is a schematic diagram of the structure of the sealing rubber sheet of the present invention.

[0018] Figure 6 It is a schematic diagram of the structure of the placement groove and the extrusion airbag of the present invention.

[0019] Figure 7 It is a schematic diagram of the structure of the clamping component of the present invention.

[0020] Figure numerals: frame 1, first conveying device 2, first motor 21, first drive roller 22, first conveyor belt 23, second conveying device 3, second motor 31, second drive roller 32, second conveyor belt 33, detection device 4, detection box 41, placement groove 42, air pressure sensor 43, sealing rubber plate 44, sealing groove 45, fixed cross plate 46, controller 47, lifting and clamping device 5, fixed plate 51, lifting component 6, mounting block 61, fourth motor 62, bidirectional threaded rod 63, threaded sleeve 64, connecting rod 65, clamping component 7, clamping plate 71, sliding column 72, sliding sleeve 73, telescopic electric cylinder 74, slide groove 75, slider 76, connecting column 77, clamping claw plate 78, rotating device 8, third motor 81, rotating column 82, rotating disk 83, mounting plate 84, extrusion device 9, extrusion airbag 91, connecting air pipe 92, inflation pump 93, electronic deflation valve 94, clamping channel 95. DETAILED DESCRIPTION

[0021] like Figures 1 to 7As shown, the present invention provides a technical solution: a food packaging air leakage detection device, a food packaging air leakage detection device, comprising a frame 1, the frame 1 is connected with a first conveying device 2 and a second conveying device 3 parallel to each other, the first conveying device 2 and the second conveying device 3 are symmetrically arranged along the width direction of the frame 1, the surface of the first conveying device 2 is provided with a fixedly connected detection device 4, the detection device 4 is provided with a plurality of detection boxes 41 equidistantly arranged along the length direction of the first conveying device 2, a plurality of placement slots 42 are equidistantly arranged inside the detection box 41, the detection box 41 is provided with a fixedly connected extrusion device 9, the first conveying device 2 and the second conveying device 3 are symmetrically arranged along the width direction of the frame 1, a fixedly connected detection device 4 is provided on the surface of the first conveying device 2 ... A rotating device 8 connected to the frame 1 is provided between the conveying device 3, and the rotating device 8 is provided with a rotating disk 83. The rotating disk 83 is symmetrically connected with mounting plates 84 on the left and right sides. A lifting and clamping device 5 is provided below the mounting plate 84. The lifting and clamping device 5 includes a fixed plate 51, a lifting component 6 and a plurality of clamping components 7. The lifting component 6 is respectively connected to the upper surface of the fixed plate 51 and the upper surface of the mounting plate 84. The clamping component 7 is connected to the lower surface of the fixed plate 51 and is equidistantly arranged along the length direction of the fixed plate 51. The clamping component 7 is correspondingly arranged above the placement groove 42, and the number of the placement groove 42 and the clamping component 7 corresponds one to one.

[0022] The first conveying device 2 and the second conveying device 3 of the present invention drive the conveyor belt to circulate, so as to realize the continuous conveying of food packages. The first conveying device 2 can convey the packages to be inspected into the inspection area, and the second conveying device 3 is used to convey the leaking food packages, so as to improve the inspection efficiency. A plurality of placement slots 42 are arranged inside the inspection box 41 of the inspection device 4, for placing the food packages to be inspected. The sealing rubber plate 44 is sealed with the top of the inspection box 41 through the sealing groove 45 to form a closed inspection environment. The air pressure sensor 43 is arranged on the lower surface of the sealing rubber plate 44, corresponding to each placement slot 42, to detect the air pressure change inside the placement slot 42. The detection box 41 is a box in which the air leakage of the food packaging is detected. The sealing rubber plate 44 ensures the airtightness of the detection environment and improves the accuracy of the detection. The rotating device 8 drives the rotating column 82 by the third motor 81, driving the rotating disk 83 and the mounting plate 84 to rotate, so as to adjust the position of the clamping component 7 above the detection box 41. The lifting component 6 drives the bidirectional threaded rod 63 to rotate through the fourth motor 62, so that the threaded sleeve 64 and the connecting rod 65 drive the fixing plate 51 and the clamping component 7 to rise and fall. The cooperation between the rotating device 8 and the lifting component 6 improves the operational flexibility and automation of the equipment.

[0023] The clamping component 7 consists of a clamping mechanism composed of a clamping plate 71, a slide post 72, a sliding sleeve 73, a telescopic electric cylinder 74 and other components. The telescopic electric cylinder 74 drives the sliding sleeve 73 to move up and down along the slide post 72, and at the same time drives the slider 76 and the clamping claw plate 78 to slide in the slide groove 75 to achieve clamping and releasing of the package. The extrusion device 9 is provided at the four corners of the placement groove 42 through an extrusion airbag 91, which is inflated by an air pump 93 to slightly squeeze the package. The electronic deflation valve 94 releases the gas in the extrusion airbag after the detection is completed so as to enter the next detection process.

[0024] In view of the technical defects of the existing technology that the food packaging air leakage detection machine has low detection efficiency and is easy to cause damage to the packaging bag, technical personnel will encounter the problems of long detection process, low efficiency and bag bursting during the extrusion process in actual operation. Since the detection process requires the use of air bags to squeeze the packaging bags into a specific gap, this step not only increases the complexity of the operation, but also easily causes the packaging bags to be scratched or burst during the extrusion process. The reasons are the same as the defects mentioned above, that is, the detection method is single and lacks flexibility, and there is a lack of sufficient protection mechanism during the extrusion process.

[0025] Based on the actual feedback from the technicians, the actual reason for these problems is that the existing detection machine design fails to fully consider the needs of continuous production and automated detection. At the same time, there is a lack of fine control and protection of the packaging bags during the detection process. Therefore, the food packaging leakage detection equipment of the present invention provides a more practical solution to this defect: by introducing the first conveying device 2 and the second conveying device 3, the continuous conveying of food packaging is realized. The first conveying device 2 is responsible for delivering the packaging to be detected into the detection area, and the second conveying device 3 is responsible for removing the leaking packaging after detection, thereby improving the detection efficiency; a plurality of detection boxes 41 are set in the detection device 4, and each detection box 41 is provided with a plurality of placement slots 42 for placing a plurality of food packages to be detected at the same time. The air pressure sensor 43 monitors the air pressure changes in each placement slot 42 in real time, and realizes multi-station parallel detection, further improving the detection efficiency.

[0026] In terms of the extrusion method of food packaging, the present invention abandons the single-sided airbag violent extrusion detection method in the prior art, and adopts a sealing rubber plate 44 and a sealing cover on the top of the detection box 41 to form a closed detection environment, and adopts an extrusion airbag 91 to wrap the package in a slight manner, so that the food packaging can be evenly stressed and the risk of bag bursting caused by single-sided violent extrusion can be reduced. At the same time, the extrusion airbag 91 releases gas through the electronic deflation valve 94 after the detection is completed, avoiding continuous pressure on the packaging bag and ensuring the integrity of the packaging bag. Through the cooperation of the rotating device 8 and the lifting component 6, the flexible position adjustment and lifting movement of the clamping component 7 above the detection box 41 are realized, ensuring that the clamping component 7 can accurately and stably clamp and release the packaging bag, avoiding additional damage to the packaging bag, and realizing the automatic selection of leaking packaging bags, thereby reducing manual intervention and further improving the efficiency of leakage detection.

[0027] As one of the preferred embodiments of the present invention, Figure 1 and Figure 2 As shown, the first conveying device 2 includes a first motor 21, a first transmission roller 22 and a first conveyor belt 23, the first transmission roller 22 is symmetrically mounted at the front and rear ends of the frame 1, the first transmission roller 22 located at the front end of the frame 1 is connected to the power output shaft of the first motor 21, and the first conveyor belt 23 is arranged on the outer side of the first transmission roller 22, the second conveying device 3 includes a second motor 31, a second transmission roller 32 and a second conveyor belt 33, the second transmission roller 32 is symmetrically mounted at the front and rear ends of the frame 1, the second transmission roller 32 located at the front end of the frame 1 is connected to the power output shaft of the second motor 31, and the second conveyor belt 33 is arranged on the outer side of the second transmission roller 32.

[0028] The first conveying device 2 is used to convey the food packages to be inspected, and the second conveying device 3 is used to convey the packages that are leaking after inspection. The first motor 21 is installed on the frame 1, and its power output shaft is connected to the first transmission roller 22 located at the front end of the frame 1. The first motor 21 is a stepping motor. When the first motor 21 is started, it drives the first transmission roller 22 at the front end to rotate intermittently, and the first conveyor belt 23 surrounds and is tightly attached to the outer side of the first transmission roller 22. The rotation of the first transmission roller 22 drives the first conveyor belt 23 to follow and move, each time moving a distance of the width of a detection box 41, so that the next detection box 41 moves to the bottom of the fixed plate 51. During the conveying process of the first conveying device 2, the food packages to be inspected are placed in the placement groove 42 at the starting end of the first conveyor belt 23. As the first conveyor belt 23 moves, the food packages are transported one by one to the bottom of the mounting plate 84 for leakage detection.

[0029] The second motor 31 of the second conveying device 3 is installed on the frame 1, and its power output shaft is connected to the second transmission roller 32 located at the front end of the frame 1. When the second motor 31 is started, the second motor 31 drives the second transmission roller 32 to rotate, and the second transmission roller 32 drives the second conveyor belt 33 to move; during the conveying process of the second conveying device 3, after being detected by the detection device 4, if any food packages with air leakage are found, these packages will be clamped out of the detection box 41 by the clamping component 7, and transferred to the surface of the second conveyor belt 33 through the cooperation of the rotating device 8 and the lifting clamping device 5. Subsequently, as the second conveyor belt 33 moves, the food packages with air leakage are transported to the other end of the device for subsequent processing or collection.

[0030] As one of the preferred embodiments of the present invention, Figure 1 and Figure 2 As shown, the rotating device 8 also includes a rotating column 82 and a third motor 81, and the rotating column 82 and the third motor 81 are arranged below the rotating disk 83 and are respectively connected to the frame 1, the upper end of the rotating column 82 is connected to the lower surface of the rotating disk 83, and the lower end of the rotating column 82 is connected to the power output shaft of the third motor 81.

[0031] The rotating device 8 is powered by a third motor 81, which is a stepping motor. The third motor 81 drives the rotating column 82 and the rotating disk 83 to rotate, thereby driving the mounting plate 84 and the lifting and clamping device 5 to rotate synchronously. With the cooperation of the lifting and clamping device 5, the rotating device 8 can accurately transfer the leaking food package from the first conveying device 2 to the second conveying device 3, thereby realizing automatic sorting and transfer of the leaking package.

[0032] When the leaking food package needs to be transferred, the third motor 81 is started, and the power output shaft of the third motor 81 is connected to the lower end of the rotating column 82. The third motor 81 rotates intermittently 90°, and the rotating column 82 follows the intermittent rotation. The rotation of the rotating column 82 drives the rotating disk 83 to rotate together. The mounting plate 84 is fixed on the rotating disk 83, and the mounting plate 84 will also rotate synchronously. The lifting and clamping device 5 is connected to the mounting plate 84, and the lifting and clamping device 5 will also rotate with the rotation of the mounting plate 84.

[0033] After the clamping component 7 of the lifting and clamping device 5 clamps the leaking food package out of the placement slot 42 of the detection box 41, the lifting component 6 drives the clamping component 7 to rise and disengage from the placement slot 42, and the rotating device 8 starts to work. As the rotating disk 83 rotates, the clamping component 7 carries the leaking food package and rotates to the top of the second conveying device 3. The lifting component 6 adjusts the height of the clamping component 7 so that the leaking food package can be accurately placed on the second conveyor belt 33.

[0034] As one of the preferred embodiments of the present invention, Figure 2As shown, the lifting component 6 includes a mounting block 61, a fourth motor 62, a bidirectional threaded rod 63, a threaded sleeve 64 and a connecting rod 65. The mounting block 61 is symmetrically arranged on the lower surface of the mounting plate 84. The two ends of the bidirectional threaded rod 63 are respectively connected to the mounting block 61 near the end. The end of one end of the bidirectional threaded rod 63 is connected to the power output shaft of the fourth motor 62. The surface of the bidirectional threaded rod 63 is provided with a reverse thread. The threaded sleeve 64 is symmetrically and movably sleeved on the surface of the bidirectional threaded rod 63. The threaded sleeve 64 is correspondingly provided with a connecting rod 65. The two ends of the connecting rod 65 are respectively hinged to the threaded sleeve 64 and the fixed plate 51.

[0035] The lifting component 6 drives the bidirectional threaded rod 63 to rotate through the fourth motor 62, and uses the reverse thread principle to make the threaded sleeve 64 move axially, and converts the linear motion into the lifting motion of the fixed plate 51 through the connecting rod 65, thereby realizing the height adjustment of the clamping component 7 and the sealing rubber plate 44. The bidirectional threaded rod 63 is a rod with reverse threads, and its two ends are respectively supported by the mounting blocks 61, and one end is connected to the power output shaft of the fourth motor 62. The threaded sleeve 64 is symmetrically and movably sleeved on the surface of the bidirectional threaded rod 63, and can move along its axial direction according to the rotation of the bidirectional threaded rod 63. The two ends of the connecting rod 65 are respectively hinged to the threaded sleeve 64 and the fixed plate 51, and are used to transmit the linear motion of the threaded sleeve 64 to the fixed plate 51.

[0036] During the rising process of the lifting component 6, when it is necessary to lift the clamping component 7 or the sealing rubber plate 44, the fourth motor 62 is started and drives the bidirectional threaded rod 63 to rotate clockwise. Since the surface of the bidirectional threaded rod 63 has reverse threads, the two threaded sleeves 64 will move on the bidirectional threaded rod 63 at the same time but in opposite directions. At this time, the two threaded sleeves 64 are close to each other, and the threaded sleeves 64 drive the fixing plate 51 to rise through the connecting rod 65, thereby driving the clamping component 7 and the sealing rubber plate 44 to rise.

[0037] On the contrary, when it is necessary to lower the clamping component 7 or the sealing rubber plate 44, the fourth motor 62 rotates in the opposite direction, and the bidirectional threaded rod 63 also rotates in the opposite direction, causing the two threaded sleeves 64 to move in opposite directions. At this time, the two threaded sleeves 64 move closer to and away from each other, and the threaded sleeves 64 drive the fixing plate 51 to descend through the connecting rod 65, thereby driving the clamping component 7 and the sealing rubber plate 44 to descend.

[0038] The lifting component 6 usually works in coordination with the rotation device 8 and the clamping component 7. During the detection process, the lifting component 6 first lowers the position height of the sealing rubber plate 44 to seal the detection box 41, and then the clamping component 7 clamps the leaking food package after the detection is completed. Finally, the lifting component 6 moves again to rise and adjust the height of the clamping component 7, and cooperates with the rotation device 8 to transfer the leaking food package to the second conveying device 3.

[0039] As one of the preferred embodiments of the present invention, Figures 1 to 6 As shown, the detection device 4 also includes a sealing rubber plate 44, an air pressure sensor 43, and a controller 47 arranged on the lower surface of the fixed plate 51. The lower surface of the sealing rubber plate 44 is provided with a sealing groove 45 of the same shape as the top of the detection box 41, and the sealing rubber plate 44 can be sealed and covered on the top of the detection box 41 through the sealing groove 45. The air pressure sensor 43 is arranged on the lower surface of the sealing rubber plate 44 and corresponds to the position of the placement groove 42 respectively. The controller 47 is arranged on the side close to the first conveying device 2 and is connected to the frame 1. The bottom of the detection box 41 is provided with a fixed cross plate 46, and the bottom of the detection box 41 is connected to the first conveyor belt 23 through the fixed cross plate 46.

[0040] The extrusion device 9 includes an extrusion airbag 91, a connecting air pipe 92, an air pump 93, an electronic deflation valve 94, and a clamping channel 95. The extrusion airbags 91 are respectively arranged at the four corner positions of the placement groove 42, and a clamping channel 95 is formed on the inner wall of the placement groove 42 between adjacent extrusion airbags 91. The connecting air pipe 92 is arranged at the bottom of the outer side of the detection box 41. The extrusion airbags 91 are respectively connected to the connecting air pipe 92, and the two ends of the connecting air pipe 92 are respectively connected to the air pump 93 and the electronic deflation valve 94.

[0041] The sealing rubber plate 44 is arranged on the lower surface of the fixed plate 51, and the lower surface is designed with a sealing groove 45 of the same shape as the top of the detection box 41, so that the sealing rubber plate 44 can accurately cover the top of the detection box 41 to form a sealed detection environment. The air pressure sensor 43 is installed on the lower surface of the sealing rubber plate 44 and corresponds to the position of each placement slot 42 in the detection box 41. The air pressure sensor 43 is used to detect the air pressure change inside each placement slot 42, so as to determine whether there is a leakage. The controller 47 is arranged on the side close to the first conveying device 2 and connected to the frame 1. The controller 47 is the control unit of the detection device 4, which is responsible for receiving the signal of the air pressure sensor 43, and processing and analyzing it, and finally determining whether the food package is leaking, and controlling the lifting component 6, the rotating device 8, and the clamping component 7 to perform corresponding actions. The fixed cross plate 46 is arranged at the bottom of the detection box 41, and is used to connect the detection box 41 with the first conveyor belt 23 to ensure the stability of the detection box 41 during the detection process.

[0042] When the food package is placed in the placement slot 42 of the detection box 41 and is transported by the first conveyor belt 23 to the bottom of the lifting component 6, the lifting component 6 starts to work, driving the fixed plate 51 and the sealing rubber plate 44 thereunder to descend, and the sealing rubber plate 44 is tightly fitted with the top of the detection box 41 through the sealing slot 45 on its lower surface to form a closed detection space. At this time, the clamping claw plate 78 of the clamping component 7 is placed in the clamping channel 95 between adjacent squeezing airbags 91. After the sealing rubber plate 44 is sealed with the top of the detection box 41, the inflation pump 93 starts to work and inflates the squeezing airbag 91 through the connecting air pipe 92, so that the squeezing airbag 91 squeezes the food package at the four corners of the placement slot 42. At the same time, the air pressure sensor 43 starts to monitor the air pressure changes inside each placement slot 42. The controller 47 receives the signal from the air pressure sensor 43 and performs real-time analysis. If the air pressure inside a placement slot 42 changes abnormally, the controller 47 will determine that the food package at that position has a leak.

[0043] When performing air leakage detection, it is necessary to set an air pressure determination range value in the air pressure sensor 43. This air pressure determination range value can be obtained through experiments. When there is no air leakage in the package in the placement slot 42, the space in the placement slot 42 is reduced due to the expansion of the squeezing airbag 91, and the air pressure in the placement slot 42 increases. The squeezing airbag 91 stops expanding, and the air pressure sensor 43 detects the air pressure. At this time, the air pressure should be within the air pressure determination range value; when there is air leakage in the package in the placement slot 42, the space in the placement slot 42 is reduced due to the expansion of the squeezing airbag 91, and the gas in the package is squeezed out of the package. The squeezing airbag 91 stops expanding, and the air pressure sensor 43 detects the air pressure. At this time, the air pressure in the placement slot 42 increases abnormally, and the air pressure should be greater than the air pressure determination range value.

[0044] After the detection is completed, and the controller 47 determines that there is a leaking food package, the controller 47 controls the opening of the electronic deflation valve 94 to deflate the extrusion airbag 91, and the controller 47 controls the lifting component 6 and the clamping component 7. The clamping component 7 clamps the leaking package. The lifting component 6 lifts the fixed plate 51 and the sealing rubber plate 44, and moves the clamping component 7 with the leaking package out of the placement slot 42. The controller 47 controls the rotating device 8 to drive the clamping component 7 and the leaking package to rotate to the top of the second conveying device 3. The lifting component 6 works again to lower the clamping component 7 and place the leaking package on the second conveyor belt 33, completing the picking and transfer of the leaking package.

[0045] As one of the preferred embodiments of the present invention, Figure 2 , Figure 4 , Figure 6 and Figure 7As shown, the clamping component 7 includes a clamping plate 71, a sliding column 72, a sliding sleeve 73, a telescopic electric cylinder 74, a sliding block 76, a connecting column 77, and a clamping claw plate 78. The sliding column 72 is vertically arranged at the center position of the upper surface of the clamping plate 71, and the sliding sleeve 73 is movably sleeved on the outside of the sliding column 72. The telescopic electric cylinder 74 is arranged below the sliding sleeve 73, and the telescopic end of the telescopic electric cylinder 74 is connected to the lower surface of the sliding sleeve 73. The cylinder end of the telescopic electric cylinder 74 is connected to the upper surface of the clamping plate 71. Slide blocks 76 are symmetrically arranged in the length direction and the width direction inside the clamping plate 71. The clamping plate 71 is provided with a sliding groove 75 that can slide with the slider 76. The lower surface of the slider 76 is connected to the clamping claw plate 78. The connecting columns 77 are respectively arranged between the slider 76 and the sliding sleeve 73, and the two ends of the connecting column 77 are respectively hinged to the slider 76 and the sliding sleeve 73.

[0046] When the food package is placed in the placement slot 42 of the detection box 41 and is transported by the first conveyor belt 23 to the bottom of the lifting component 6, the lifting component 6 starts to work and drives the bidirectional threaded rod 63 to rotate through the fourth motor 62, so that the threaded sleeve 64 moves relatively on the bidirectional threaded rod 63, thereby driving the connecting rod 65 and the fixed plate 51 to rise and fall, and the clamping component 7 also rises and falls accordingly until the clamping claw plate 78 can enter the predetermined position in the placement slot 42. At this time, the clamping claw plates 78 are respectively placed in the clamping channels 95 between adjacent extrusion airbags 91 to prevent the clamping claw plates 78 from hindering the expansion of the compression airbags 91.

[0047] The telescopic electric cylinder 74 starts to work, and the telescopic end of the telescopic electric cylinder 74 pushes the sliding sleeve 73 to slide upward along the sliding column 72. Since the two ends of the connecting column 77 are respectively hinged to the sliding block 76 and the sliding sleeve 73, when the sliding sleeve 73 moves, it will drive the connecting column 77 and the sliding block 76 to slide in the sliding groove 75 in the clamping plate 71, so that the clamping claw plate 78 can move along a predetermined trajectory, gradually approach and clamp the food package, and when the telescopic end of the telescopic electric cylinder 74 is fully extended, the clamping claw plate 78 will tightly clamp the food package.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A food packaging air leakage detection device, comprising a frame (1), characterized in that: The frame (1) is connected to a first conveying device (2) and a second conveying device (3) which are parallel to each other. The first conveying device (2) and the second conveying device (3) are symmetrically arranged along the width direction of the frame (1). A fixedly connected detection device (4) is provided on the surface of the first conveying device (2). The detection device (4) is provided with a plurality of detection boxes (41) which are equidistantly arranged along the length direction of the first conveying device (2). A plurality of placement slots (42) are equidistantly arranged inside the detection box (41). The detection box (41) is provided with a fixedly connected extrusion device (9). A rotating device (8) connected to the frame (1) is provided between the first conveying device (2) and the second conveying device (3). The rotating device (8) is The device (8) is provided with a rotating disk (83), and the left and right sides of the rotating disk (83) are symmetrically connected to mounting plates (84). A lifting and clamping device (5) is provided below the mounting plate (84), and the lifting and clamping device (5) comprises a fixed plate (51), a lifting component (6), and a plurality of clamping components (7). The lifting component (6) is respectively connected to the upper surface of the fixed plate (51) and the upper surface of the mounting plate (84). The clamping components (7) are connected to the lower surface of the fixed plate (51) and are equidistantly arranged along the length direction of the fixed plate (51). The clamping components (7) are correspondingly arranged above the placement grooves (42), and the number of the placement grooves (42) and the number of the clamping components (7) correspond one to one.

2. A food packaging air leakage detection device according to claim 1, characterized in that: The first conveying device (2) comprises a first motor (21), a first transmission roller (22) and a first conveyor belt (23); the first transmission roller (22) is symmetrically mounted at the front and rear ends of the frame (1), the first transmission roller (22) located at the front end of the frame (1) is connected to the power output shaft of the first motor (21), and the first conveyor belt (23) is arranged on the outside of the first transmission roller (22); the second conveying device (3) comprises a second motor (31), a second transmission roller (32) and a second conveyor belt (33); the second transmission roller (32) is symmetrically mounted at the front and rear ends of the frame (1), the second transmission roller (32) located at the front end of the frame (1) is connected to the power output shaft of the second motor (31), and the second conveyor belt (33) is arranged on the outside of the second transmission roller (32).

3. A food packaging air leakage detection device according to claim 1, characterized in that: The rotating device (8) further comprises a rotating column (82) and a third motor (81), wherein the rotating column (82) and the third motor (81) are arranged below the rotating disk (83) and are respectively connected to the frame (1), the upper end of the rotating column (82) is connected to the lower surface of the rotating disk (83), and the lower end of the rotating column (82) is connected to the power output shaft of the third motor (81).

4. A food packaging air leakage detection device according to claim 1, characterized in that: The lifting component (6) comprises a mounting block (61), a fourth motor (62), a bidirectional threaded rod (63), a threaded sleeve (64) and a connecting rod (65); the mounting block (61) is symmetrically arranged on the lower surface of the mounting plate (84); the positions of the two ends of the bidirectional threaded rod (63) close to the ends are respectively connected to the mounting block (61); the end of one end of the bidirectional threaded rod (63) is connected to the power output shaft of the fourth motor (62); the surface of the bidirectional threaded rod (63) is provided with reverse threads; the threaded sleeve (64) is symmetrically and movably sleeved on the surface of the bidirectional threaded rod (63); the threaded sleeve (64) is correspondingly provided with a connecting rod (65); the two ends of the connecting rod (65) are respectively hinged to the threaded sleeve (64) and the fixing plate (51).

5. A food packaging air leakage detection device according to claim 2, characterized in that: The detection device (4) further comprises a sealing rubber plate (44), an air pressure sensor (43), and a controller (47) arranged on the lower surface of the fixed plate (51); the lower surface of the sealing rubber plate (44) is provided with a sealing groove (45) having the same shape as the top of the detection box (41); the sealing rubber plate (44) can be sealed and covered on the top of the detection box (41) through the sealing groove (45); the air pressure sensor (43) is arranged on the lower surface of the sealing rubber plate (44) and corresponds to the position of the placement groove (42); the controller (47) is arranged on a side close to the first conveying device (2) and connected to the frame (1); the bottom of the detection box (41) is provided with a fixed transverse plate (46); the bottom of the detection box (41) is connected to the first conveyor belt (23) via the fixed transverse plate (46).

6. The food packaging air leakage detection device according to claim 1, characterized in that: The clamping component (7) comprises a clamping plate (71), a sliding column (72), a sliding sleeve (73), a telescopic electric cylinder (74), a sliding block (76), a connecting column (77), and a clamping claw plate (78); the sliding column (72) is vertically arranged at the center position of the upper surface of the clamping plate (71); the sliding sleeve (73) is movably sleeved on the outside of the sliding column (72); the telescopic electric cylinder (74) is arranged below the sliding sleeve (73); the telescopic end of the telescopic electric cylinder (74) is connected to the lower surface of the sliding sleeve (73); and the telescopic electric cylinder (74) is connected to the lower surface of the sliding sleeve (73). The cylinder end of the cylinder (74) is connected to the upper surface of the clamping plate (71), and the inside of the clamping plate (71) is symmetrically provided with sliders (76) along the length direction and the width direction, and the inside of the clamping plate (71) is provided with a slide groove (75) that can slide with the slider (76), and the lower surface of the slider (76) is connected to a clamping claw plate (78), and the connecting column (77) is respectively arranged between the slider (76) and the sliding sleeve (73), and the two ends of the connecting column (77) are respectively hinged to the slider (76) and the sliding sleeve (73).

7. A food packaging air leakage detection device according to claim 1, characterized in that: The squeezing device (9) comprises a squeezing airbag (91), a connecting air pipe (92), an air pump (93), an electronic air release valve (94), and a clamping channel (95). The squeezing airbags (91) are respectively arranged at four corner positions of the placement groove (42), and a clamping channel (95) is formed on the inner wall of the placement groove (42) between adjacent squeezing airbags (91). The connecting air pipe (92) is arranged at the bottom of the outer side of the detection box (41). The squeezing airbags (91) are respectively connected to the connecting air pipe (92), and the two ends of the connecting air pipe (92) are respectively connected to the air pump (93) and the electronic air release valve (94).

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