Flexible package air tightness detection device based on AI vision

Abstract

The utility model discloses a flexible package air tightness detection device based on AI vision, which comprises a vacuum chamber, a buffer chamber, a uniform conveying belt, a differential arrangement device and a sorting conveying belt are sequentially arranged in the vacuum chamber, the uniform conveying belt is used for uniformly conveying flexible packages in the buffer chamber to the feeding end of the differential arrangement device, and the sorting conveying belt is used for sorting the flexible packages in the buffer chamber. The differential material arranging device is used for conveying flexible packages to the feeding end of the sorting material conveying belt in a single row mode, the sorting material conveying belt comprises a conveying belt made of transparent materials, and a visual detection mechanism is arranged on the conveying belt. Compared with the prior art, the flexible package sorting device has the advantages that flexible packages are sequentially conveyed to the sorting conveying belt by the uniform conveying belt and the differential sorting device in a variable-speed manner; in the sorting stage, the visual detection mechanism carries out visual detection on each flexible package to judge whether the flexible package is expanded or not, air tightness detection is independently carried out on each flexible package, the detection effect is good, the speed is high, operation is easy, and the product compatibility is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to soft package airtightness detection technical field especially, it is a kind of soft package airtightness detection device based on AI vision. BACKGROUND

[0002] Non-vacuum soft package is a common packaging method of food, medicine and health products, and refers to a packaging form containing a small amount of gas or filled with fresh-keeping gas, which is generally a bag, strip or box-shaped soft package prepared from paper materials, PVC plastic film, aluminum foil, tin foil or their composites for packaging and storing products. It belongs to the packaging sealed without removing oxygen in the air or filling the bag with fresh-keeping nitrogen. Patent No. CN118122651A discloses a kind of non-vacuum soft package product's airtightness automatic detection sorting device and method. The sorting device is provided with a sorting channel composed of conveying rollers and light rollers. The soft package falls onto the sorting channel in a vacuum negative pressure environment, and the width of the expanded soft package increases. After falling onto the sorting channel, it is transported by the conveying rollers into the good product chamber. The width of the non-expanded soft package does not change, and it falls from between the conveying rollers and the light rollers into the defective product chamber. The sorting device sorts multiple soft packages, which affects the soft package airtightness detection effect. Secondly, the operation is complex and has poor compatibility. SUMMARY

[0003] The utility model provides a kind of soft package airtightness detection device based on AI vision to solve the problems of poor soft package airtightness detection effect and complex operation in prior art.

[0004] The utility model provides a kind of soft package airtightness detection device based on AI vision, comprising a vacuum chamber, a buffer chamber, a uniform material conveying belt, a differential material handling device and a sorting material conveying belt are sequentially arranged in the vacuum chamber, the uniform material conveying belt is used to uniformly convey the soft package in the buffer chamber to the feed end of the differential material handling device, the differential material handling device is used to convey the soft package single row to the feed end of the sorting material conveying belt, the sorting material conveying belt includes a conveying belt made of transparent material, and a vision detection mechanism is arranged on the conveying belt.

[0005] Preferably, the vision detection mechanism includes a first camera, a first light source, a second camera and a second light source, the first camera and the first light source are arranged above and below the conveying belt respectively, and the second camera and the second light source are arranged on both sides of the conveying belt.

[0006] Preferably, the device further comprises a storage chamber connected to the vacuum chamber through a first valve, the discharge end of the conveying belt is provided with a good product chamber, the good product chamber is provided with a substandard product chamber on the side close to the differential speed material handling device, the conveying belt is provided with a reject cylinder above the substandard product chamber, and the vacuum system is connected to the storage chamber, the vacuum chamber and the good product chamber.

[0007] Preferably, the first camera is used to obtain length, width and shape data of the soft package, and the second camera is used to obtain width, thickness and shape data of the soft package.

[0008] Preferably, the uniform material conveying belt is divided into a straight section and an inclined section, the straight section is located below the buffer chamber, the lower end of the inclined section is connected to the straight section, the higher end of the inclined section is located above the differential speed material handling device, and the uniform material conveying belt is provided with a plurality of partitions.

[0009] Preferably, the differential speed material handling device comprises a first differential speed material conveying belt, a second differential speed material conveying belt, a roller differential mechanism and an optical sensor, the optical sensor is arranged above the first differential speed material conveying belt, the second differential speed material conveying belt and the roller differential mechanism, the second differential speed material conveying belt is located between the first differential speed material conveying belt and the roller differential mechanism, and the higher end of the inclined section is located above the first differential speed material conveying belt.

[0010] Preferably, the roller differential mechanism comprises a plurality of groups of rollers and a plurality of servo motors, and one servo motor drives one group of rollers to rotate.

[0011] Preferably, the servo motors are arranged outside the vacuum chamber, and the output shafts of the servo motors are magnetically coupled to drive the rollers in the vacuum chamber.

[0012] Preferably, the feeding end of the good product chamber is connected to the vacuum chamber through a second valve, the discharge end of the good product chamber is provided with a third valve, the discharge end of the substandard product chamber is provided with a fourth valve, and the storage chamber is provided with a fifth valve.

[0013] Preferably, the first valve is a plug valve, and the second valve, the third valve, the fourth valve and the fifth valve are all air bag valves.

[0014] Compared with the prior art, in the utility model, the uniform amount of material conveying belt uniformly conveys the soft package of the buffer chamber to the feeding end of the differential material sorting device, the differential material sorting device disperses the soft package into a single row through the variable speed mode, and the distance between the soft packages is pulled apart, so that the subsequent soft package can be detected one by one. In the sorting stage, the visual detection mechanism performs visual detection on each soft package to judge whether it is inflated, so that the air tightness of each soft package is detected separately. The detection effect is good, the speed is fast, the material sorting mode and the sorting mode are less affected by the soft package specifications, the operation is simple, the product compatibility is good, and the purpose of high-precision automatic detection of the air tightness of the soft package is realized. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0016] Figure 1 It is the structure schematic view of the utility model;

[0017] Figure 2 It is the structure schematic view of the buffer storehouse of the utility model;

[0018] Figure 3 It is the structure schematic view of the differential material sorting device of the utility model;

[0019] Figure 4 It is the structure schematic view of the sorting material conveying belt of the utility model;

[0020] Figure 5 It is the structure schematic view of the utility model;

[0021] Figure 6 It is the air path structure schematic view of the utility model.

[0022] Reference signs:

[0023] 1. Storage chamber, 2. First valve, 3. Buffer chamber, 4. Uniform feeding belt, 5. Differential feeding device, 6. Sorting feeding belt, 7. First camera, 8. First light source, 9. Second camera, 10. Second light source, 11. Good product chamber, 12. Defective product chamber, 13. Rejection cylinder, 14. Second valve, 15. Third valve, 16. Fourth valve, 17. Fifth valve, 18. Vacuum pump, 19. Gas tank, 20. One-way valve, 21. First vacuum valve, 22. Proportional valve, 23. Second vacuum valve, 24. Gas compression mechanism, 25. Filtering mechanism, 26. Cylinder, 27. Vacuum filter, 28. Electromagnetic directional valve, 29. Electromagnetic speed regulating valve, 30. Partition, 041. Straight section, 042. Inclined section, 051. First differential feeding belt, 052. Second differential feeding belt, 053. Roller differential mechanism, 054. Optical sensor, 055. Servo motor, 100. Vacuum system, 200. Vacuum chamber. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the present application clearer, the technical scheme of the present application will be described clearly and completely below in combination with the drawings in the present application. Obviously, the described embodiments are some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0025] With reference to the drawings Figure 1 and the drawings Figure 5The embodiment provides a soft package air tightness detection device based on AI vision, which comprises a vacuum chamber 200, a buffer chamber 3, an even feeding belt 4, a differential speed material arranging device 5 and a sorting feeding belt 6 are sequentially arranged in the vacuum chamber 200, the even feeding belt 4 is used for uniformly conveying the soft package in the buffer chamber 3 to the feeding end of the differential speed material arranging device 5, the differential speed material arranging device 5 is used for conveying the soft package in a single row to the feeding end of the sorting feeding belt 6, and the sorting feeding belt 6 comprises a conveying belt made of transparent material, and a visual detection mechanism is arranged on the conveying belt. The buffer chamber 3 is used for receiving the soft package falling from a storage chamber 1 and buffering the soft package so as to continuously convey the soft package by the even feeding belt 4. The even feeding belt 4 is used for uniformly conveying the soft package to the feeding end of the differential speed material arranging device 5, the differential speed material arranging device 5 disperses the soft package by distributing different conveying speeds, and finally the soft package can be conveyed on the sorting feeding belt 6 in sequence. In the structural design, the even feeding belt 4 and the differential speed material arranging device 5 cooperate to facilitate the material arrangement of the soft package. Then the visual detection mechanism on the sorting feeding belt 6 detects whether the soft package is inflated, so that the soft package is quickly sorted. In the utility model, the buffer chamber 3, the even feeding belt 4 and the differential speed material arranging device 5 cooperate to realize the automatic material arrangement of the soft package and convey the soft package on the sorting feeding belt 6 in sequence. The visual detection mechanism visually detects each soft package to judge whether the soft package is inflated, realizes the air tightness detection of each soft package separately, has good detection effect and good compatibility for products.

[0026] An embodiment of the visual detection mechanism: the visual detection mechanism comprises a first camera 7, a first light source 8, a second camera 9 and a second light source 10, the first camera 7 and the first light source 8 are arranged above and below the conveying belt respectively, and the second camera 8 and the second light source 10 are arranged on the two sides of the conveying belt. The first camera 7 and the second camera 9 cooperate to judge whether the soft package is inflated, if the soft package is inflated, the soft package is conveyed to a good product chamber 11 by the sorting feeding belt 6, otherwise the soft package is pushed into a substandard product chamber 12 by a reject cylinder 13. The first light source 8 cooperates with the first camera 7 to detect the soft package by photographing, the second light source 10 cooperates with the second camera 9 to detect the soft package by photographing, and therefore the sorting feeding belt 6 is arranged in a transparent shape.

[0027] As another embodiment of the utility model: the embodiment comprises a storage chamber 1 and a vacuum system 100, the storage chamber 1 is connected with the vacuum chamber 200 through a first valve 2, a good product chamber 11 is arranged below the discharging end of the conveying belt, a substandard product chamber 12 is arranged on the side of the good product chamber 11 close to the differential speed material arranging device 5, a reject cylinder 13 is arranged above the substandard product chamber 12, and the vacuum system 100 is connected with the storage chamber 1, the vacuum chamber 200 and the good product chamber 11 respectively.

[0028] An embodiment for detecting whether the soft package is inflated: the first camera 7 is used to obtain the length, width data and shape data of the soft package, and the second camera 9 is used to obtain the width, thickness data and shape data of the soft package. The two cameras cooperate to detect the length, width, height and shape volume of the soft package, so as to judge whether the soft package is inflated.

[0029] As another embodiment of the utility model: refer to the attached Figure 4 , the first camera 7 and the second camera 9 are both arranged outside the vacuum chamber 200, the vacuum chamber 200 is provided with a glass window at the position corresponding to the first camera 7 and the second camera 9, and the first camera 7 and the second camera 9 shoot the soft package in the vacuum chamber 200 through the glass window. Specifically, the first light source 8 and the second light source 10 are both arranged outside the vacuum chamber 200, and the vacuum chamber 200 is provided with a glass window at the position corresponding to the first light source 8 and the second light source 10, and the first light source 8 and the second light source 10 are arranged in the vacuum chamber 200 through the glass window. The structure design is beneficial to heat dissipation of the camera and the light source, and can effectively reduce the influence on the vacuum chamber 200.

[0030] As another embodiment of the utility model: refer to the attached Figure 2 , the uniform material conveying belt 4 is divided into a straight section 041 and an inclined section 042, the straight section 041 is located below the buffer chamber 3, the soft package in the buffer chamber 3 is accumulated on the straight section 041, the lower end of the inclined section 042 is connected to the straight section 041, and the higher end of the inclined section 042 is located above the differential material sorting device 5. A plurality of partitions 30 are arranged on the uniform material conveying belt 4, and the partitions 30 cooperate with the bottom of the buffer chamber 3 to fix the height of the soft package accumulated between the two partitions 30, so that the soft package is uniformly conveyed to the differential material sorting device 5. The arrangement of the inclined section 042 is beneficial to improve the horizontal position of the soft package, and facilitates the installation of the differential material sorting device 5.

[0031] An embodiment of the differential material sorting device 5: refer to the attached Figure 5 , the differential material sorting device 5 comprises a first differential material conveying belt 051, a second differential material conveying belt 052, a roller differential mechanism 053 and an optical sensor 054. The optical sensor 054 is arranged above the first differential material conveying belt 051, the second differential material conveying belt 052 and the roller differential mechanism 053. The second differential material conveying belt 052 is located between the first differential material conveying belt 051 and the roller differential mechanism 053, and the higher end of the inclined section 042 is located above the first differential material conveying belt 051. The first differential material conveying belt 051 and the second differential material conveying belt 052 both convey the soft package through variable speed transmission, so that the number of soft packages on the first differential material conveying belt 051 and the second differential material conveying belt 052 is different, facilitating the subsequent conveying of the soft package to the roller differential mechanism 053. The roller differential mechanism 053 is used to sequentially convey the soft package to the sorting material conveying belt 6.

[0032] One embodiment of the roller differential mechanism 053: the roller differential mechanism 053 includes multiple sets of rollers and multiple servo motors 055, one servo motor 055 drives a set of rollers to rotate, and adjacent two rollers in each set of rollers are connected through a belt. The multiple sets of rollers are used for variable speed conveying, so that the soft packages are orderly arranged and have a certain spacing between them, which facilitates subsequent sorting. The conveying speed of the roller differential mechanism 053 can reach 120-180 packages per minute, and the detection speed of the soft package can reach 120-180 packages per minute, and the detection efficiency is high.

[0033] As another embodiment of the utility model: refer to the attached Figure 3 , the servo motor 055 is arranged outside the vacuum chamber 200 to facilitate heat dissipation, and secondly, the volume of the vacuum chamber 200 can be reduced. Specifically, the servo motor 055 connected with the uniform material conveying belt 4, the sorting material conveying belt 6, the first differential material conveying belt 051 and the second differential material conveying belt 052 is also arranged outside the vacuum chamber 200. The output shaft of the servo motor 055 is driven by magnetic coupling with the rollers in the vacuum chamber 200, specifically, the rollers in the vacuum chamber 200 are driven to rotate by the input shaft, the output shaft of the servo motor 055 is arranged outside the vacuum chamber 200, and the output shaft of the servo motor 055 and the input shaft are connected by magnetic coupling. The structure design can effectively improve the sealing performance of the vacuum chamber 200.

[0034] As another embodiment of the utility model: the push plate is fixed on the piston rod of the reject cylinder 13, the reject cylinder 13 is installed outside the vacuum chamber 200, the push plate is arranged in the vacuum chamber 200, and the push plate moves forward to push the unqualified soft package out of the sorting material conveying belt 6, so as to fall into the defective chamber 12. The reject cylinder 13 is three, two of which are used to remove unqualified soft packages, and the remaining reject cylinder 13 is used as backup. The speed of the soft package conveyed on the sorting material conveying belt 6 is very fast, and if one reject cylinder 13 removes an unqualified soft package, it cannot remove another one in time, which can be removed by other reject cylinders 13.

[0035] As another embodiment of the utility model: the feed end of the good product chamber 11 is connected with the vacuum chamber 200 through the second valve 14, the discharge end of the good product chamber 11 is equipped with the third valve 15, the third valve 15 is the door of the discharge port of the good product chamber 11, the discharge end of the substandard product chamber 12 is equipped with the fourth valve 16, the fourth valve 16 is the door of the discharge port of the substandard product chamber 12, the fifth valve 17 is equipped on the storage chamber 1, closes the fifth valve 17 and extracts vacuum to make the air pressure of the storage chamber 1 consistent with the air pressure of the vacuum chamber 200, opens the first valve 2, when the soft package of the storage chamber 1 falls into the buffer chamber 3, the air pressure of the vacuum chamber 200 will not change. The good product chamber 11 is filled, closes the second valve 14, maintains the air pressure of the vacuum chamber 200 unchanged, the detection device continues to sort, the qualified product falls on the top of the second valve 14, opens the third valve 15 to open the discharge port of the good product chamber 11 and discharges. After discharging, the third valve 15 is closed and vacuum is extracted to make the air pressure of the good product chamber 11 consistent with the air pressure of the vacuum chamber 200, the second valve 14 is opened, and the soft package falls into the good product chamber 11. The substandard product of the soft package is less, and the substandard product chamber 12 needs a long time to be filled or is not filled after detection, therefore, only the fourth valve 16 is arranged at the discharge port of the substandard product chamber 12 to meet the demand.

[0036] Specifically, the first valve 2 is a plug valve, the second valve 14, the third valve 15, the fourth valve 16 and the fifth valve 17 are all air bag valves. The plug valve and the air bag valve can better realize the sealing of the vacuum chamber 200.

[0037] An embodiment of the vacuum system 100: refer to the attached Figure 6The vacuum system 100 comprises a vacuum pump 18, a gas storage tank 19, a one-way valve 20, a first vacuum valve 21, a proportional valve 22, the vacuum pump 18 is connected with the gas storage tank 19, the gas storage tank 19 is connected with the material storage chamber 1 and the good product chamber 11 through the one-way valve 20 and the first vacuum valve 21 respectively, the gas storage tank 19 is connected with the vacuum chamber 200 through the proportional valve 22, the material storage chamber 1, the vacuum chamber 200 and the good product chamber 11 are connected with the gas compression mechanism 24 through the first vacuum valve 21 respectively, the gas compression mechanism 24 and the second vacuum valve 23 are provided with the filtering mechanism 25, the outlet of the second vacuum valve 23 is connected with the air cylinder 26 of the air bag valve and the air cylinder 26 of the plug-in valve respectively, and the air bag valve and the plug-in valve are opened and closed through the air cylinder 26. The gas compression mechanism 24 and the filtering mechanism 25 cooperate to provide clean compressed air for the air cylinder 26, and also can provide clean compressed air for the material storage chamber 1, the vacuum chamber 200 and the good product chamber 11, so as to break the vacuum and load and unload. The vacuum system 100 can accurately control the air pressure of the vacuum chamber 200 through the proportional valve 22, so that the air tightness of the soft package can be better detected. The vacuum system 100 is connected with the material storage chamber 1, the vacuum chamber 200 and the good product chamber 11 through three gas paths respectively, the material storage chamber 1 and the good product chamber 11 can be independently vacuumized, and when loading and unloading are needed, the material arrangement and sorting of the soft package in the vacuum chamber 200 will not be affected. The common use of the gas compression mechanism 24 makes the gas path simple and reliable.

[0038] As another embodiment of the utility model: the proportional valve 22 and the vacuum chamber 200 are provided with a vacuum filter 27. If the soft package is a defective product, the gas in the soft package will enter the vacuum chamber 200 and then flow into the vacuum pump 18, so the vacuum filter 27 needs to be set to filter it, so as to extend the service life of the vacuum pump 18.

[0039] An embodiment of the filtering mechanism 25: the filtering mechanism 25 comprises an oil filtering assembly, a pressure reducing assembly and a water filtering assembly connected in sequence, the oil filtering assembly, the pressure reducing assembly and the water filtering assembly filter oil, reduce pressure and filter water for compressed air respectively, and the outlet of the water filtering assembly is connected with the inlet of the second vacuum valve 23 and the first vacuum valve 21 respectively. The compressed gas provided by the gas compression mechanism 24 becomes clean compressed gas after being filtered by the filtering mechanism 25, and then is supplied to the air cylinder 26, the material storage chamber 1, the vacuum chamber 200 and the good product chamber 11.

[0040] As another embodiment of the utility model: the second vacuum valve 23 and the air cylinder 26 of the air bag valve are further provided with an electromagnetic reversing valve 28 and an electromagnetic speed regulating valve 29.

[0041] As another embodiment of the utility model: the vacuum chamber 200 is provided with a pressure gauge, and the air pressure in the vacuum chamber 200 is adjusted in real time through the cooperation of the pressure gauge and the proportional valve 22.

[0042] As another embodiment of the present application: a weighing device is installed below the sorting conveying belt 6, and the weighing device is used to weigh the weight of the soft package on the sorting conveying belt 6, specifically, the weighing device detects the weight of the soft package on the sorting conveying belt 6 through the sorting conveying belt 6.

[0043] As another embodiment of the present application: the cabinet where the storage chamber 1, the buffer chamber 3 and the uniform conveying belt 4 are located is in L-shaped distribution with the cabinet where the differential speed material sorting device 5 is located, and this structure design is beneficial to reduce the installation length of the device.

[0044] The utility model also provides a kind of working process of soft package air tightness detection device based on AI vision, it includes the following steps:

[0045] Step 1: open the door, charge to storage chamber 1, close the door, vacuum system 100 is vacuumed to make the air pressure of storage chamber 1 consistent with the air pressure of vacuum chamber 200;

[0046] Specifically, after closing the door after charging storage chamber 1, close the fifth valve 17, vacuum to make the air pressure of storage chamber 1 consistent with the air pressure of vacuum chamber 200, in this process, vacuum system 100 is vacuumed to make the air pressure of vacuum chamber 200 and good product chamber 11 reach preset value. Wherein, before opening the door, if the air pressure of storage chamber 1 is negative, clean compressed air is needed to break vacuum, then open the fifth valve 17. Clean compressed air is provided by gas compression mechanism 24.

[0047] Step 2: open the first valve 2, storage chamber 1 is communicated with buffer chamber 3, soft package is affected by gravity and falls into buffer chamber 3 from storage chamber 1, close the first valve 2, execute step 1 to charge to storage chamber 1 again, so as to replenish buffer chamber 3 at any time. Execute step 3 to start sorting process and sorting process;

[0048] Step 3: the soft package of buffer chamber 3 is uniformly conveyed to the feeding end of differential speed material sorting device 5, and the differential speed material sorting device 5 changes the stacked soft package into single-row conveying by distributing different speeds during conveying. Specifically, the uniform conveying belt 4 uniformly sends the soft package of buffer chamber 3 to the first differential conveying belt 051, and the first differential conveying belt 051 and the second differential conveying belt 052 adjust the number of soft package on them by changing speed, and after preliminary arrangement and pulling apart the distance of soft package, they are conveyed to the roller differential mechanism 053, the roller differential mechanism 053 forms single row of soft package by using multiple groups of rollers and pulls apart the distance of soft package, and finally one by one to the sorting conveying belt 6.

[0049] Step 4: The single soft package delivered by the differential sorting device 5 passes through the first camera 7 and the second camera 9 in turn for visual inspection. If the soft package is inflated, it is a good product and is directly delivered to the good product chamber 11. Otherwise, the reject cylinder 13 pushes the soft package into the substandard product chamber 12.

[0050] The specific process of visual inspection is as follows: the first camera 7 cooperates with the first light source 8 to obtain the length, width and shape data of the soft package, and the second camera 9 cooperates with the second light source 10 to obtain the width, thickness and shape data of the soft package. Then, the data obtained by the first camera 7 and the second camera 9 are sorted to obtain the volume and shape data of the soft package. Thus, it can be judged whether the soft package is inflated. If it is inflated, it is a good product and is sent to the good product chamber 11 by the sorting feed belt 6. If it is not inflated, it indicates that it is a substandard product due to air leakage and poor air tightness, and is pushed into the substandard product chamber 12 by the reject cylinder 13.

[0051] Step 5: When the good product chamber 11 is full, step 6 is performed. When the substandard product chamber 12 is full, step 7 is performed.

[0052] Step 6: Close the second valve 14 between the good product chamber 11 and the vacuum chamber 200, open the warehouse door of the good product chamber 11, transfer the soft packages in the good product chamber 11, then close the warehouse door of the good product chamber 11, and open the second valve 14 between the good product chamber 11 and the vacuum chamber 200. The unloading of the good product chamber 11 does not affect the vacuum chamber 200, and the soft package sorting and sorting in the vacuum chamber 200 are still in progress. The qualified products are sent to the upper side of the second valve 14, and the substandard products are pushed into the substandard product chamber 12 by the reject cylinder 13.

[0053] Specifically, after the second valve 14 is closed, clean compressed air is introduced into the good product chamber 11 to break the vacuum, the third valve 15 is opened, and then the unloading is performed. After unloading, the third valve 15 is closed, the vacuum system 100 is vacuumed to make the air pressure in the good product chamber 11 consistent with the pressure in the vacuum chamber 200, and then the second valve 14 is opened, and the soft package falls into the good product chamber 11.

[0054] Step 7: All devices are controlled to stop in turn, clean compressed air is introduced into the vacuum chamber 200 to break the vacuum, the fourth valve 16 is opened, and the substandard products are taken out. Then, the fourth valve 16 is closed, the vacuum system 100 is vacuumed to make the air pressure in the vacuum chamber 200 reach a preset value, and steps 1-5 are performed.

[0055] Step 8: After all the soft packages are detected, all the devices are controlled to stop in turn, clean compressed air is introduced to break the vacuum in the storage chamber 1 and the vacuum chamber 200, and the substandard product chamber 12 and the good product chamber 11 are opened to take out the substandard products and qualified products.

[0056] The material detecting device is arranged in the buffer chamber 3, and when it is detected that the soft package in the buffer chamber 3 drops to a certain position, the control device controls the storage chamber 1 to supplement the material into the buffer chamber 3.

[0057] The implementation of the material supplementing into the storage chamber 1 is that the soft package is automatically conveyed into the storage chamber 1 by the lifting mechanism, or the soft package is manually poured into the storage chamber 1.

[0058] In the utility model, the uniform material conveying belt 4 uniformly conveys the soft package in the buffer chamber 3 to the feeding end of the differential material arranging device 5, the differential material arranging device 5 disperses the soft package to form a single row through the variable speed mode, and the distance between the soft packages is pulled apart, so that the air tightness of the soft package can be detected one by one subsequently. In the sorting stage, the transparent conveying belt is arranged, the first camera 7, the first light source 8, the second camera 9 and the second light source 10 are configured, the visual detection of the soft package is completed, whether the soft package is expanded is judged, then according to the sorting result, the soft package is sent into the good product chamber 11 and the substandard product chamber 12 respectively. The detection effect is good, the speed is fast, the material arranging mode and the sorting mode are little influenced by the specification of the soft package, the operation is simple, the product compatibility is good, and the purpose of high-precision full-automatic detection of the air tightness of the soft package is achieved. Second, the gas compression mechanism 24 is responsible for breaking the vacuum of the vacuum chamber 200, the storage chamber 1 and the good product chamber 11, and closing and opening the air bag valve and the plug valve at the storage chamber 1 and the good product chamber 11; the vacuum system 100 is responsible for vacuumizing the vacuum chamber 200, the storage chamber 1 and the good product chamber 11, so that the material supplementing, material arranging and sorting of the soft package are in the negative pressure environment. The vacuum system 100 and the gas compression mechanism 24 cooperate to complete the pressure increasing and pressure reducing of the vacuum chamber 200, the storage chamber 1 and the good product chamber 11, so that the material supplementing, material arranging, sorting and material discharging of the soft package are ensured, the overall structure is designed ingeniously, and the control is simple.

[0059] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: the technical solutions recorded in the foregoing examples can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An AI vision-based soft package air tightness detection device, characterized in that, The application relates to a soft package sorting device, which comprises a vacuum chamber, a buffer chamber, a uniform conveying belt, a differential conveying device and a sorting conveying belt arranged in the vacuum chamber in sequence, the uniform conveying belt is used for uniformly conveying the soft package from the buffer chamber to the feeding end of the differential conveying device, the differential conveying device is used for conveying the soft package in a single row to the feeding end of the sorting conveying belt, and the sorting conveying belt comprises a conveying belt made of transparent material and provided with a visual detection mechanism.

2. The AI vision-based soft package air tightness detection device according to claim 1, characterized in that, The visual detection mechanism comprises a first camera, a first light source, a second camera and a second light source, the first camera and the first light source are arranged above and below the conveying belt respectively, and the second camera and the second light source are arranged on the two sides of the conveying belt.

3. The AI vision-based soft package air tightness detection device according to claim 2, characterized in that, The application further relates to a storage chamber and a vacuum system, the storage chamber is connected with the vacuum chamber through a first valve, the discharging end of the conveying belt is provided with a good product chamber, the side of the good product chamber close to the differential conveying device is provided with a defective product chamber, the conveying belt is provided with a defective product cylinder above the defective product chamber, and the vacuum system is connected with the storage chamber, the vacuum chamber and the good product chamber respectively.

4. The AI vision-based soft package air tightness detection device according to claim 2, characterized in that, The first camera is used for acquiring the length, width and shape data of the soft package, and the second camera is used for acquiring the width, thickness and shape data of the soft package.

5. The AI vision-based soft package air tightness detection device according to claim 3, characterized in that, The uniform conveying belt is divided into a straight section and an inclined section, the straight section is located below the buffer chamber, the lower end of the inclined section is connected with the straight section, the higher end of the inclined section is located above the differential conveying device, and a plurality of partitions are arranged on the uniform conveying belt.

6. The AI vision-based soft package air tightness detection device according to claim 5, characterized in that, The differential conveying device comprises a first differential conveying belt, a second differential conveying belt, a roller differential mechanism and an optical sensor, the optical sensor is arranged above the first differential conveying belt, the second differential conveying belt and the roller differential mechanism, the second differential conveying belt is located between the first differential conveying belt and the roller differential mechanism, and the higher end of the inclined section is located above the first differential conveying belt.

7. The AI vision-based soft package air tightness detection device according to claim 6, characterized in that, The roller differential mechanism comprises a plurality of groups of rollers and a plurality of servo motors, and one servo motor drives one group of rollers to rotate.

8. The AI vision-based soft package air tightness detection device according to claim 7, characterized in that, The servo motors are arranged outside the vacuum chamber, and the output shafts of the servo motors are magnetically coupled with the rollers in the vacuum chamber to drive the rollers.

9. The AI vision-based soft package air tightness detection device according to claim 8, characterized in that, The feeding end of the good product chamber is connected with the vacuum chamber through a second valve, the discharging end of the good product chamber is provided with a third valve, the discharging end of the defective product chamber is provided with a fourth valve, and the storage chamber is provided with a fifth valve.

10. The AI vision-based soft package air tightness detection device according to claim 9, characterized in that, The first valve is a plug valve, and the second valve, the third valve, the fourth valve and the fifth valve are all air bag valves.

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