Packaging bag detection equipment

Abstract

The utility model discloses packaging bag detection equipment which comprises an extrusion mechanism, the extrusion mechanism comprises an extrusion conveying device and a falling bag recovery device, the falling bag recovery device is arranged on the lower side of the extrusion conveying device, the extrusion conveying device is provided with an extrusion conveying channel, and packaging bags enter the extrusion conveying channel in a vertical bag state; the extrusion conveying device extrudes the two side faces of the packaging bag and clamps the packaging bag through extrusion force, and the packaging bag is conveyed in a suspended state. Liquid or gas in a packaging bag rushes to a bag opening, the liquid or the gas applies pressure to a sealing opening, if the sealing opening is virtual sealing or not tight sealing, liquid leakage can be caused, the size of the packaging bag is reduced, then the extrusion conveying device cannot clamp the packaging bag, and the packaging bag falls into the falling bag recycling device from the extrusion conveying device. Therefore, whether the packaging bag leaks liquid or not is detected. The packaging machine can be widely applied to the technical field of packaging of packaging bags.

Description

Technical Field

[0001] The present application relates to the technical field of packaging bag packaging, and in particular to a packaging bag detection device. Background Art

[0002] Flexible packaging bags are easy to process, convenient to use, and low-cost, making them increasingly popular. For example, they are used to package laundry detergent. Liquid is filled into the bag and then the bag is sealed, typically using a heat seal. However, due to impurities in the seal area or abnormal sealing temperatures, the bag may be loosely sealed or not sealed tightly. These bags may appear identical to qualified products, but may leak during transportation, storage, and sales. Therefore, after packaging, the seals must be inspected for leaks. Currently, packaging bags are mostly inspected by random sampling, with workers visually or using industrial cameras to identify the smoothness of the seal line. However, even if some bags are loosely sealed or not sealed tightly, it is impossible to accurately determine whether they are qualified products by simply looking at the seal line. Utility Model Content

[0003] In order to solve at least one of the above technical problems, the present application provides a packaging bag detection device, and the technical solution adopted is as follows.

[0004] The packaging bag detection equipment provided in the present application includes an extrusion mechanism, which includes an extrusion conveying device and a bag-drop recovery device. The extrusion conveying device has an extrusion conveying channel, and the packaging bag enters the extrusion conveying channel in a standing bag state. The extrusion conveying device squeezes the two side surfaces of the packaging bag and clamps the packaging bag with the extrusion force, and the packaging bag is conveyed in a suspended state; the bag-drop recovery device is arranged on the lower side of the extrusion conveying device, and the packaging bag that falls from the extrusion conveying device falls into the bag-drop recovery device.

[0005] In certain embodiments of the present application, the extrusion and transmission device includes two extrusion and transmission components, and the two extrusion and transmission components are spaced apart to form the extrusion and transmission channel; the extrusion mechanism includes an extrusion force control component, and at least one of the extrusion and transmission components is provided with the extrusion force control component, and the extrusion force control component includes a cylinder and a pressure-stabilizing cylinder, and the pressure-stabilizing cylinder is connected to the cylinder through a pipeline, and the push rod of the cylinder is connected to the extrusion and transmission component.

[0006] In certain embodiments of the present application, at least one of the extrusion and conveying components is movable to adjust the width of the extrusion and conveying channel; the extrusion mechanism includes a spacing adjustment drive component, the spacing adjustment drive component is connected to the cylinder or the spacing adjustment drive component is connected to the extrusion and conveying component, and the spacing adjustment drive component drives the cylinder or the extrusion and conveying component to move in the form of a screw pair to adjust the spacing between the two extrusion and conveying components.

[0007] In certain embodiments of the present application, the spacing adjustment drive assembly includes a spacing adjustment guide structure, the cylinder is movably disposed on the spacing adjustment guide structure through a slider, or the extrusion transmission assembly is movably disposed on the spacing adjustment guide structure through a slider, and the cylinder is suspended on the lower side of the spacing adjustment guide structure or the extrusion transmission assembly is suspended on the lower side of the spacing adjustment guide structure.

[0008] In certain embodiments of the present application, the extrusion and conveying device includes a front limit block, and the front limit block is used to limit the minimum spacing of the extrusion and conveying components.

[0009] In certain embodiments of the present application, the inlet width of the extrusion conveying channel gradually decreases along the conveying direction.

[0010] In certain embodiments of the present application, the extrusion mechanism includes a protective cover, which is arranged on the upper side of the extrusion conveying device and extends along the length direction of the extrusion conveying channel. If the extrusion conveying device squeezes the packaging bag and sprays the liquid in the packaging bag, the liquid in the packaging bag is sprayed onto the protective cover.

[0011] In certain embodiments of the present application, the extrusion mechanism includes an image acquisition component and a light source, and both the image acquisition component and the light source are arranged near the outlet of the extrusion transmission channel. The light source is used to illuminate the surface of one side of the packaging bag, and the image acquisition component is used to capture the image of the surface of the other side of the packaging bag.

[0012] In certain embodiments of the present application, the bag-drop recovery device includes a bag-drop recovery box, and the top of the bag-drop recovery box is open.

[0013] In certain embodiments of the present application, the packaging bag detection equipment includes a feed conveyor and a discharge conveyor. The feed conveyor is arranged at the inlet of the extrusion conveyor, and the discharge conveyor is arranged at the outlet of the extrusion conveyor.

[0014] The embodiments of the present application have at least the following beneficial effects: a packaging bag enters the extrusion conveying channel of the extrusion mechanism, the extrusion conveyor clamps the packaging bag, and the packaging bag is conveyed forward in a suspended state. The extrusion conveyor applies pressure to the sides of the packaging bag, causing the liquid or gas in the packaging bag to flow toward the bag opening. The liquid or gas applies pressure to the seal. If the seal is not sealed or not sealed tightly, it will cause liquid leakage. The packaging bag will be reduced in volume, and the extrusion conveyor will be unable to clamp the packaging bag. The packaging bag will fall from the extrusion conveyor to the bag drop recovery device, thereby completing the detection of whether the packaging bag is leaking. The present application can be widely used in the field of packaging bag packaging technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The aspects and advantages described and / or attached in the embodiments of the present application will become apparent and easily understood in conjunction with the following drawings. It should be noted that the embodiments embodied in the following drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0016] Figure 1 This is the structural diagram of the extrusion mechanism.

[0017] Figure 2 This is the structural diagram of the extrusion mechanism.

[0018] Figure 3 It is a distribution diagram of the extrusion conveyor, the feeding conveyor and the discharging conveyor.

[0019] Figure 4 This is a structural diagram of the protective cover located on the upper side of the extrusion conveyor.

[0020] Figure markings: 1000, extrusion mechanism; 1100, extrusion transmission assembly; 1101, extrusion transmission channel; 1102, extrusion belt; 1103, mounting seat; 1104, first drive; 1200, bag recovery box; 1300, protective cover; 1301, collecting trough; 1401, cylinder; 1402, pressure-stabilizing cylinder; 1501, driving rod; 1502, hand wheel; 1503, spacing adjustment guide structure; 2100, feed conveyor; 2200, discharge conveyor. DETAILED DESCRIPTION

[0021] The following combination Figures 1 to 4 Embodiments of the present application are described in detail, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and are not to be construed as limiting the present application.

[0022] In the description of this application, it should be understood that if the terms "center", "middle", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting this application. In the description of this application, unless otherwise specified, "multiple" means two or more.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0024] The present application relates to a packaging bag detection device, which is used to detect whether the seal of a packaging bag is loose.

[0025] Combined with attachment Figure 1 The packaging bag detection equipment includes a squeezing mechanism 1000. The packaging bag enters the squeezing mechanism 1000, and the squeezing mechanism 1000 can squeeze the side of the packaging bag so that the gas and liquid in the packaging bag are squeezed to seal the bag mouth, thereby detecting whether the seal of the packaging bag is leaking.

[0026] Specifically, the extrusion mechanism 1000 includes an extrusion conveyor having an extrusion conveying channel 1101. The packaging bag enters the extrusion conveying channel 1101 in a standing state. The extrusion conveyor can squeeze the two sides of the packaging bag and clamp the front and back sides of the packaging bag with the squeezing force, thereby conveying the packaging bag in a suspended state.

[0027] It should be noted that when the extrusion conveyor clamps and squeezes the bag, the liquid or gas inside the bag flows toward the seal at the bag opening. If the seal is not tight, the liquid pressure can burst the seal, causing leakage. If the liquid or gas in the bag is squeezed out of the seal, the bag's volume decreases. At this time, the extrusion conveyor may not be able to clamp the bag with sufficient force, causing the bag to fall from the extrusion conveyor. Therefore, leaking bags due to loose seals can automatically fall from the extrusion conveyor, thereby automatically removing defective products.

[0028] Furthermore, the extrusion mechanism 1000 includes a bag-falling recovery device, which is arranged on the lower side of the extrusion conveyor device. The packaging bags that fall from the extrusion conveyor device fall into the bag-falling recovery device to recover packaging bags with unqualified sealing.

[0029] As an embodiment, the bag-drop recovery device includes a bag-drop recovery box 1200 , the top of which is open, and the bag-drop recovery box 1200 is used to receive the packaging bags dropped from the squeezing and conveying device.

[0030] Furthermore, a drain valve is provided on the side wall or bottom wall of the bag recovery box 1200. When the packaging bag falls into the bag recovery box 1200, the seal is squeezed and the laundry liquid flows into the bag recovery box 1200. The user can collect the laundry liquid by opening the drain valve.

[0031] Regarding the arrangement of the bag drop recovery box 1200 , there are at least the following alternative examples.

[0032] In some alternative examples, the user can remove the bag collection box 1200 from the squeezing mechanism 1000 to recycle the packaging bags that have failed to meet the sealing standards. The user can replace the bag collection box 1200 filled with packaging bags in the squeezing mechanism 1000 with an empty bag collection box 1200 to improve work efficiency.

[0033] In some alternative examples, the packaging bag inspection device uses a conveyor belt to transport the bag recovery box 1200, and the conveyor belt is used to replace the bag recovery box 1200 in the squeezing mechanism 1000. The conveyor belt sends the bag recovery box 1200 filled with packaging bags out of the squeezing mechanism 1000 and simultaneously sends the empty bag recovery box 1200 to the bottom side of the squeezing conveyor, thereby improving the automation level and working efficiency of the equipment.

[0034] Regarding the bag-drop recovery device that recycles packaging bags, at least the design can be replaced as follows: the bag-drop recovery device includes a bag-drop recovery cavity, one end of the bag-drop recovery cavity is open and located on the lower side of the extrusion conveying device, and the other end extends to the back-end equipment. The packaging bags that fall into the bag-drop recovery cavity enter the back-end equipment along the cavity, and the back-end equipment automatically processes the packaging bags and laundry detergent to achieve automatic recycling and improve efficiency.

[0035] As an embodiment, the extrusion conveying device includes two extrusion conveying assemblies 1100 , which are spaced apart to form an extrusion conveying channel 1101 . Specifically, the extrusion conveying assembly 1100 includes an extrusion belt 1102 .

[0036] It is understood that the two extrusion belts 1102 in the extrusion conveyor are arranged at intervals to form an extrusion conveyor channel 1101. The two extrusion belts 1102 run synchronously, respectively squeezing the two sides of the packaging bag, and the two extrusion belts 1102 form a clamping effect on the packaging bag to keep the packaging bag suspended.

[0037] The squeezing conveyor acts on the surface of the packaging bag with a squeezing belt 1102. The squeezing belt 1102 can continuously and stably apply pressure to the packaging bag during the process of conveying the packaging bag, thereby maintaining the pressure of the liquid or gas in the packaging bag on the seal, thereby extending the squeezing detection time of the packaging bag.

[0038] Furthermore, the extrusion transmission assembly 1100 includes a mounting base 1103, and the pulleys at both ends of the extrusion belt 1102 are set on the mounting base 1103. The extrusion transmission assembly 1100 includes a first driver 1104, and the first driver 1104 includes a motor. The rotating shaft of the first driver 1104 is connected to one of the pulleys, thereby driving the extrusion belt 1102 to operate.

[0039] As an embodiment, the squeezing mechanism 1000 includes a squeezing force control component, and at least one squeezing transmission component 1100 is provided with the squeezing force control component. Under the action of the squeezing force control component, the squeezing transmission component 1100 maintains a stable squeezing force on the packaging bag.

[0040] Specifically, in conjunction with Figure 1 and attached Figure 2 The extrusion force control assembly includes an air cylinder 1401 and a pressure-stabilizing cylinder 1402. The pressure-stabilizing cylinder 1402 is connected to the air cylinder 1401 via a pipeline. The push rod of the air cylinder 1401 is connected to the extrusion transmission assembly 1100, and the push rod is connected to the mounting base 1103. Furthermore, the pressure-stabilizing cylinder 1402 is provided with a pressure regulating valve to adjust the set air pressure of the pressure-stabilizing cylinder 1402.

[0041] It is understood that when a packaging bag enters the extrusion and conveying channel 1101, the bulging packaging bag can react on the extrusion and conveying assembly 1100, causing the extrusion and conveying assembly 1100 to move in the opposite direction. In this case, the volume of the inner cavity of the cylinder 1401 decreases, and the air pressure in the cylinder 1401 increases, resulting in an increase in the extrusion force exerted by the push rod of the cylinder 1401 on the packaging bag. Therefore, the extrusion force control assembly is equipped with a pressure stabilizing cylinder 1402 for the cylinder 1401. The pressure stabilizing cylinder 1402 is configured as a large-volume sealed chamber. When the air pressure in the cylinder 1401 increases, the gas in the cylinder 1401 flows to the pressure stabilizing cylinder 1402 to balance the air pressure in the cylinder 1401, thereby maintaining a stable air pressure in the cylinder 1401. When the packaging bag leaves the extrusion conveying channel 1101, the volume of the inner cavity of the cylinder 1401 increases and the air pressure in the cylinder 1401 decreases. At this time, the gas in the pressure-stabilizing cylinder 1402 enters the cylinder 1401 to keep the air pressure in the cylinder 1401 stable.

[0042] In some examples, the extrusion mechanism 1000 is configured with an extrusion force control component for one of the extrusion transmission components 1100. In other examples, the extrusion mechanism 1000 is configured with an extrusion force control component for each of the two extrusion transmission components 1100.

[0043] In one embodiment, the spacing between the two extrusion conveyor assemblies 1100 is adjustable to adjust the width of the extrusion conveyor channel 1101, thereby enabling inspection of packaging bags of varying thicknesses. Specifically, at least one of the extrusion conveyor assemblies 1100 is movable to move the two extrusion conveyor assemblies 1100 closer to or further from each other, thereby adjusting the spacing between the two extrusion conveyor assemblies 1100.

[0044] Furthermore, the extrusion mechanism 1000 includes a spacing adjustment drive assembly, which is used to adjust the spacing between the two extrusion transmission assemblies 1100.

[0045] In some examples, one of the extrusion and transmission components 1100 is movable, and the other extrusion and transmission component 1100 is fixed. It can be understood that the extrusion mechanism 1000 is configured with a spacing adjustment drive component for the movable extrusion and transmission component 1100.

[0046] Specifically, the spacing adjustment drive assembly is connected to the cylinder 1401, and the spacing adjustment drive assembly moves the extrusion transmission assembly 1100 by moving the cylinder 1401. Furthermore, the spacing adjustment drive assembly drives the cylinder 1401 to move in the form of a screw pair to adjust the spacing between the two extrusion transmission assemblies 1100. Figure 1 The spacing adjustment drive assembly includes a drive rod 1501, which is configured as a screw rod. The drive rod 1501 drives the cylinder 1401 to move back and forth through a moving seat having a screw hole.

[0047] Furthermore, combined with Figure 1 and attached Figure 2 The spacing adjustment drive assembly includes a hand wheel 1502, which is disposed at the end of the drive rod 1501 for manual operation by a user. Alternatively, the spacing adjustment drive assembly includes a motor, the shaft of which is connected to the drive rod 1501 to achieve automatic rotation of the drive rod 1501.

[0048] Regarding the pitch adjustment of the extrusion conveying assembly 1100 , there are at least the following alternative examples.

[0049] In some alternative examples, the spacing adjustment drive assembly is connected to the extrusion transmission assembly 1100, specifically, the spacing adjustment drive assembly is connected to the mounting base 1103. Furthermore, the extrusion force control assembly is connected to another extrusion transmission assembly 1100, specifically, the push rod of the cylinder 1401 is connected to the mounting base 1103 of the extrusion transmission assembly 1100. Furthermore, the spacing adjustment drive assembly drives the extrusion transmission assembly 1100 to move in the manner of a screw pair. Specifically, the drive rod 1501 of the spacing adjustment drive assembly drives the mounting base 1103 to move back and forth via a movable base having a screw hole to adjust the spacing between the two extrusion transmission assemblies 1100. In this case, both extrusion transmission assemblies 1100 are capable of moving.

[0050] In other alternative examples, the extrusion mechanism 1000 is configured with a spacing adjustment drive assembly and an extrusion force control assembly for both extrusion and transmission assemblies 1100. Specifically, the spacing adjustment drive assembly is connected to a cylinder 1401, and the spacing adjustment drive assembly drives the cylinder 1401 to move back and forth. The cylinder 1401 is connected to the extrusion and transmission assembly 1100, and the push rod of the cylinder 1401 drives the mounting base 1103 to move back and forth. In this case, both extrusion and transmission assemblies 1100 are able to move.

[0051] In some alternative examples, the extrusion mechanism 1000 is equipped with an extrusion force control assembly for both extrusion and transmission assemblies 1100, and a spacing adjustment drive assembly is provided for the extrusion mechanism 1000. The cylinders 1401 connected to the two extrusion and transmission assemblies 1100 share a common spacing adjustment drive assembly. Specifically, the spacing adjustment drive assembly simultaneously drives the two cylinders 1401 to move using a screw with a left-hand helix and a right-hand helix through a screw pair. In this case, both extrusion and transmission assemblies 1100 can move.

[0052] Regarding the operation mode of the spacing adjustment drive component, at least one alternative design is that the spacing adjustment drive component is driven by one of pneumatic, belt drive, hydraulic drive, rack and pinion drive and linear motor.

[0053] As an embodiment, Figure 1 and attached Figure 2 The spacing adjustment driving assembly includes a spacing adjustment guide structure 1503 , which is fixed to the frame of the extrusion mechanism 1000 , and extends along the width direction of the extrusion transmission channel 1101 .

[0054] Specifically, the spacing adjustment guide structure 1503 is configured as a guide rail, a guide groove, or a guide rod.

[0055] Furthermore, the cylinder 1401 is movably mounted on the spacing adjustment guide structure 1503 via a slider. Driven by the spacing adjustment drive assembly, the cylinder 1401 connected to the movable extrusion and transmission assembly 1100 moves along the spacing adjustment guide structure 1503, thereby adjusting the spacing between the two extrusion and transmission assemblies 1100.

[0056] It should be noted that the extrusion transmission assembly 1100 is movably disposed on the spacing adjustment guide structure 1503 via a slider. Specifically, the mounting seat 1103 is movably disposed on the spacing adjustment guide structure 1503 via a slider.

[0057] In some examples, the spacing adjustment guide structure 1503 is disposed on the top of the extrusion mechanism 1000 , and the cylinder 1401 is suspended from the lower side of the spacing adjustment guide structure 1503 or the extrusion transmission assembly 1100 is suspended from the lower side of the spacing adjustment guide structure 1503 .

[0058] It should be noted that, in conjunction with the Figure 1 In the example shown, the extrusion and transmission device is located below the spacing adjustment drive assembly, with one extrusion and transmission assembly 1100 being movable and the other being fixed. Specifically, on the movable extrusion and transmission assembly 1100, the cylinder 1401 is movably connected to the spacing adjustment guide structure 1503 via a slider, the mounting base 1103 is movably connected to the spacing adjustment guide structure 1503 via a slider, and the drive rod 1501 is connected to the slider connected to the cylinder 1401 via a movable base having a screw hole.

[0059] As an embodiment, the extrusion conveying device includes a front limit block, which is used to limit the minimum spacing of the extrusion conveying components 1100 and further limit the minimum width of the extrusion conveying channel 1101.

[0060] The front limit block is fixedly arranged in the extrusion mechanism 1000. When the two extrusion transmission components 1100 approach each other, the front limit block is used to support the movable mounting seat 1103 or the front limit block is used to support the slider on the spacing adjustment guide structure 1503 to stop the extrusion transmission component 1100 from moving, thereby limiting the minimum spacing of the extrusion transmission component 1100.

[0061] It should be noted that if one of the extrusion and transmission assemblies 1100 is movable and the other is fixed, the extrusion and transmission device is equipped with a front stop block for the movable extrusion and transmission assembly 1100. If both extrusion and transmission assemblies 1100 are movable, the extrusion and transmission device is equipped with a front stop block for both extrusion and transmission assemblies 1100.

[0062] It can be understood that when the liquid or gas in the packaging bag is squeezed out from the seal and the volume of the packaging bag becomes smaller, the cylinder 1401 pushes the extrusion conveying assembly 1100. Due to the limitation of the front limit block, the extrusion conveying assembly 1100 stops moving, which leads to insufficient clamping force of the extrusion conveying device on the packaging bag, causing the packaging bag to fall from the extrusion conveying device.

[0063] Furthermore, the extrusion and conveying device includes a rear stopper, which is used to limit the maximum spacing between the extrusion and conveying assemblies 1100, and thus the maximum width of the extrusion and conveying channel 1101. The rear stopper is fixedly mounted in the extrusion mechanism 1000. When the two extrusion and conveying assemblies 1100 move away from each other, the rear stopper is used to support the moving mounting seat 1103 or the slider on the spacing adjustment guide structure 1503 to stop the extrusion and conveying assemblies 1100 from moving, thereby limiting the maximum spacing between the extrusion and conveying assemblies 1100.

[0064] It should be noted that if one of the extrusion and transmission assemblies 1100 is movable and the other is fixed, the extrusion and transmission device is equipped with a rear stop block for the movable extrusion and transmission assembly 1100. If both extrusion and transmission assemblies 1100 are movable, the extrusion and transmission device is equipped with a rear stop block for both extrusion and transmission assemblies 1100.

[0065] As an embodiment, Figure 3 The inlet width of the extrusion conveying channel 1101 gradually decreases along the conveying direction, so that the inlet of the extrusion conveying channel 1101 forms a gradually narrowing shape, which plays the role of guiding the packaging bag.

[0066] Furthermore, both sides of the entrance of the extrusion delivery channel 1101 are arranged tilted to form a trumpet-shaped entrance.

[0067] The side wall of the entrance of the extrusion conveying channel 1101 gradually extends toward the middle of the extrusion conveying channel 1101 along the conveying direction to form a side wall inclined relative to the center line of the extrusion conveying channel 1101 .

[0068] In some examples, the extrusion conveying assembly 1100 is equipped with a tensioning wheel for the extrusion belt 1102. The tensioning wheel and the pulley at the entrance of the extrusion belt 1102 tighten the extrusion belt 1102 and form an inclined end belt, forming an entrance of the extrusion conveying channel 1101 with a gradually decreasing width.

[0069] In other examples, the extrusion mechanism 1000 is provided with an inclined guide plate at the entrance of the extrusion transmission channel 1101. Along the transmission direction, one end of the guide plate gradually extends toward the middle of the extrusion transmission channel 1101, so that the guide plate is inclined relative to the center line of the extrusion transmission channel 1101, thereby forming an entrance of the extrusion transmission channel 1101 with a gradually decreasing width.

[0070] As an embodiment, Figure 1 and attached Figure 4The squeezing mechanism 1000 includes a protective cover 1300, which is disposed above the squeezing conveyor. If the squeezing conveyor squeezes the packaging bag and causes the liquid in the packaging bag to be ejected, the liquid in the packaging bag is ejected onto the protective cover 1300, thereby preventing the ejected liquid from polluting the environment.

[0071] It is understandable that the protective cover 1300 is buckled on the upper side of the extrusion conveying device. Further, the protective cover 1300 extends along the length direction of the extrusion conveying channel 1101 so that the liquid sprayed by the packaging bag during the entire extrusion conveying process can enter the protective cover 1300 as much as possible.

[0072] It should be noted that, in order to ensure that the sprayed liquid enters the protective cover 1300 , the top of the packaging bag extends into the protective cover 1300 so that the bag opening of the packaging bag is located in the protective cover 1300 .

[0073] In some examples, the Figure 4 The protective cover 1300 has a collecting groove 1301, which is provided at the bottom of the side wall of the protective cover 1300. The length direction of the collecting groove 1301 extends along the length direction of the extrusion transmission channel 1101. It is understood that the liquid sprayed onto the inner surface of the side wall of the protective cover 1300 can flow along the side wall to the collecting groove 1301.

[0074] Furthermore, the protective cover 1300 is provided with collecting grooves 1301 on both sides of the packaging bag. The two collecting grooves 1301 extend toward the middle along their width to increase the probability of collecting liquid. A gap is formed between the two collecting grooves 1301 so that the top of the packaging bag can extend into the protective cover 1300.

[0075] As an embodiment, the extrusion mechanism 1000 includes an image acquisition component, which is arranged near the outlet of the extrusion conveying channel 1101 and is located on one side of the extrusion conveying channel 1101. The image acquisition component is used to capture images of the packaging bag surface. Specifically, the image acquisition component includes a camera.

[0076] When pressed in a squeeze conveyor, a bag's seal may bulge but not burst, leaking liquid, or fall off the squeeze conveyor. To prevent these bags from being missed, an image acquisition component captures images of the bag's seal and uploads them to the bag inspection device's host computer. The host computer identifies any bulges and determines whether the seal line is smooth, further enabling detection of loosely sealed bags.

[0077] It should be noted that when the image acquisition component captures the image of the packaging bag, the packaging bag is still squeezed and clamped by the squeezing and conveying device. And packaging bags with loose seals detected by image recognition are rejected by the back-end equipment.

[0078] Furthermore, the extrusion mechanism 1000 includes a light source, which is arranged near the outlet of the extrusion transmission channel 1101. The light source is used to illuminate the packaging bag, illuminate the image acquisition component, increase the brightness, and thus improve the clarity of the captured image, thereby making the bulge of the seal more obvious and easy to identify.

[0079] Specifically, the image capture assembly and light source are located on either side of the extrusion conveying channel 1101, with the packaging bag passing between the image capture assembly and the light source. It is understood that the light source is used to illuminate the surface of one side of the packaging bag, and the image capture assembly is used to capture an image of the surface of the other side of the packaging bag.

[0080] As an embodiment, Figure 3 The packaging bag inspection device includes a feed conveyor 2100, which is arranged at the entrance of the extrusion conveyor. The feed conveyor 2100 conveys the packaging bags in a belt conveyor or chain conveyor, and the packaging bags are in a standing state on the feed conveyor 2100.

[0081] It is understood that one end of the feed conveyor 2100 extends to the lower side of the inlet of the extrusion conveyor, so that the packaging bags conveyed by the feed conveyor 2100 can enter the extrusion conveyor, so that the extrusion conveyor can clamp the packaging bags. After the extrusion conveyor clamps the packaging bags, the extrusion conveyor continues to convey the clamped packaging bags forward, and the clamped packaging bags leave the feed conveyor 2100 and hang in the air.

[0082] As an embodiment, Figure 3 The packaging bag detection device includes a discharge conveyor 2200, which is arranged at the outlet of the extrusion conveyor. The discharge conveyor 2200 transports the packaging bags in a belt conveyor or chain conveyor manner.

[0083] It is understood that one end of the discharge conveyor 2200 extends to the lower side of the outlet of the extrusion conveyor so that the packaging bag clamped by the extrusion conveyor can be located on the discharge conveyor 2200. After the packaging bag leaves the outlet of the extrusion conveyor, the discharge conveyor 2200 continues to transport the packaging bag forward.

[0084] In the description of this specification, if the reference terms "one embodiment," "some examples," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" appear, it means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0085] The above describes the implementation methods of the present application in detail in conjunction with the accompanying drawings, but the present application is not limited to the above implementation methods. Various changes can be made within the scope of knowledge possessed by ordinary technicians in the technical field without departing from the purpose of the present application.

Claims

1. A packaging bag inspection device, characterized by: Comprising an extrusion mechanism, the extrusion mechanism comprising An extrusion conveyor device, wherein the extrusion conveyor device has an extrusion conveying channel, and the packaging bag enters the extrusion conveying channel in a standing bag state. The extrusion conveyor device squeezes the two sides of the packaging bag and clamps the packaging bag with the squeezing force, and the packaging bag is conveyed in a suspended state; The bag-falling recovery device is arranged at the lower side of the extrusion and conveying device, and the packaging bags dropped from the extrusion and conveying device fall into the bag-falling recovery device.

2. The packaging bag detection device according to claim 1, characterized in that: The extrusion and transmission device includes two extrusion and transmission components, and the two extrusion and transmission components are spaced apart to form the extrusion and transmission channel; the extrusion mechanism includes an extrusion force control component, and at least one of the extrusion and transmission components is provided with the extrusion force control component, and the extrusion force control component includes a cylinder and a pressure stabilizing cylinder, and the pressure stabilizing cylinder is connected to the cylinder through a pipeline, and the push rod of the cylinder is connected to the extrusion and transmission component.

3. The packaging bag detection device according to claim 2, characterized in that: At least one of the extrusion and conveying components is movable to adjust the width of the extrusion and conveying channel; the extrusion mechanism includes a spacing adjustment drive component, the spacing adjustment drive component is connected to the cylinder or the spacing adjustment drive component is connected to the extrusion and conveying component, and the spacing adjustment drive component drives the cylinder or the extrusion and conveying component to move in the form of a screw pair to adjust the spacing between the two extrusion and conveying components.

4. The packaging bag detection device according to claim 3, characterized in that: The spacing adjustment drive assembly includes a spacing adjustment guide structure, the cylinder is movably set on the spacing adjustment guide structure through a slider, or the extrusion transmission assembly is movably set on the spacing adjustment guide structure through a slider, and the cylinder is suspended on the lower side of the spacing adjustment guide structure or the extrusion transmission assembly is suspended on the lower side of the spacing adjustment guide structure.

5. The packaging bag detection device according to claim 3 or 4, characterized in that: The extrusion and transmission device includes a front limit block, which is used to limit the minimum spacing of the extrusion and transmission components.

6. The packaging bag detection device according to any one of claims 1 to 4, characterized in that: The inlet width of the extrusion conveying channel gradually decreases along the conveying direction.

7. The packaging bag inspection device according to any one of claims 1 to 4, characterized in that: The extrusion mechanism includes a protective cover, which is arranged on the upper side of the extrusion conveying device and extends along the length direction of the extrusion conveying channel. If the extrusion conveying device squeezes the packaging bag and sprays the liquid in the packaging bag, the liquid in the packaging bag is sprayed onto the protective cover.

8. The packaging bag inspection device according to any one of claims 1 to 4, characterized in that: The extrusion mechanism includes an image acquisition component and a light source, both of which are arranged near the outlet of the extrusion transmission channel. The light source is used to illuminate the surface of one side of the packaging bag, and the image acquisition component is used to capture the image of the surface of the other side of the packaging bag.

9. The packaging bag detection device according to claim 1, characterized in that: The bag-drop recovery device comprises a bag-drop recovery box, and the top of the bag-drop recovery box is open.

10. The packaging bag detection device according to claim 1, characterized in that: The packaging bag detection equipment includes a feeding conveying device and a discharging conveying device. The feeding conveying device is arranged at the inlet of the extrusion conveying device, and the discharging conveying device is arranged at the outlet of the extrusion conveying device.

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