Moisture-proof anti-oxidation matrix vacuum packaging equipment and using method thereof

Abstract

The invention relates to the technical field of vacuum packaging equipment, in particular to damp-proof and anti-oxidation matrix vacuum packaging equipment and a using method thereof.The damp-proof and anti-oxidation matrix vacuum packaging equipment comprises a vacuumizing assembly and a conveying assembly, the upper end of the conveying assembly is fixedly connected with a supporting assembly, a pressing assembly and an anti-disengaging assembly, the supporting assembly comprises a gas storage shell, and the right side of the gas storage shell is fixedly connected with a sucking pump; the pressing and holding assembly comprises a frame plate, a servo motor is fixedly connected to the right side of the frame plate, a rotating rod is fixedly connected to the tail end of a main shaft of the servo motor, a rotating wheel is fixedly connected to the outer side of the rotating rod, the rotating wheel is sleeved with belts, and a rubber strip is fixedly connected between the two belts. According to the device, the device does not need to be opened in advance, it is ensured that a vacuumizing nozzle is smoothly inserted, the success rate and the automation degree are improved, the device is suitable for vacuumizing bag bodies made of soft materials, and efficiency and quality are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vacuum packaging equipment, in particular to a moisture-proof and oxidation-resistant substrate vacuum packaging equipment and its use method. BACKGROUND

[0002] The substrate vacuum packaging equipment is a mechanical device specially used for vacuum packaging of articles, and its core is to use a specific substrate material as the main structure of packaging, remove the air inside the packaging by vacuumizing, form a vacuum environment, effectively isolate the moisture and oxygen from the outside, achieve the purpose of moisture-proof, oxidation-resistant, and prolong the shelf life of the article. This equipment is widely used in food, medicine, electronic components and other fields, and can ensure the quality and performance of the article during storage and transportation. Moisture-proof is mainly achieved by removing the air inside the packaging through vacuum packaging, reducing the humidity inside the packaging, and preventing the article from absorbing moisture. Oxidation-resistant is achieved by reducing the oxygen content inside the packaging to prevent the article from deteriorating, fading or performance degradation due to oxidation. This equipment is usually used for packaging of articles sensitive to environmental humidity and oxygen content, such as food, medicine, electronic components, to ensure the quality and stability of the article during storage and transportation. When the vacuum packaging equipment processes a large number of single bags, in order to realize automatic vacuumizing, the bag usually needs to be opened first, and then the vacuumizing nozzle is inserted into the bag. However, this operation method has limitations, especially for bags made of soft material. During the conveying process by the conveying belt, the opening of the bag may be closed due to the vibration of the conveying belt, causing the vacuumizing nozzle to fail to be inserted smoothly, thereby reducing the success rate of vacuumizing. Therefore, the present application provides a moisture-proof and oxidation-resistant substrate vacuum packaging equipment and its use method to solve the above problems. SUMMARY

[0003] The present application aims to provide a moisture-proof and oxidation-resistant substrate vacuum packaging equipment and its use method to solve the problems mentioned in the background.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions: A moisture-proof and oxidation-resistant matrix vacuum packaging device and its method of use, comprising a vacuuming component and a conveying component. The upper end of the conveying component is fixedly connected to a supporting component, a pressing component, and an anti-detachment component. The supporting component includes an air storage shell, and an air pump is fixedly connected to the right side of the air storage shell. An extension cylinder is fixedly connected to the bottom end of the air storage shell, and a rubber ring is fixedly connected to the bottom end of the extension cylinder. The pressing component includes a frame plate, and a servo motor is fixedly connected to the right side of the frame plate. A rotating rod is fixedly connected to the end of the servo motor spindle, and a rotating wheel is fixedly connected to the outside of the rotating rod. A belt is sleeved on the outside of the rotating wheel, and a rubber strip is fixedly connected between the two belts. A gap is provided between the bottom end of the frame plate and the top end of the conveying component, and the bottom end of the belt is in contact with the upper end of the conveying component.

[0005] As a further optimization of the present invention, the vacuum assembly includes a robotic arm, a vacuum nozzle is fixedly connected to the left end of the robotic arm, a hose is fixedly connected to the right side of the vacuum nozzle, and the hose is fixedly connected to the top of the vacuuming device.

[0006] As a further optimization of the present invention, the conveying assembly includes a conveyor, a lower air extraction mechanism is fixedly connected to the inner side of the conveyor, an electric telescopic rod and a limiting telescopic rod are fixedly connected to the upper end of the conveyor, and a connecting block plate is fixedly connected to the piston rod end of the electric telescopic rod.

[0007] As a further optimization of the present invention, the structure of the lower suction mechanism is the same as that of the support component, the upper end of the lower suction mechanism is mirror-aligned with the upper end of the support component, and the lower suction mechanism extends upward from the support of the conveyor.

[0008] As a further optimization of the present invention, the front end and rear end of the gas storage shell are fixedly connected to the connecting block plate, a gap is provided between the two extension cylinders, the gap between the extension cylinders is aligned with the vacuum nozzle, and the extension cylinder is located at the left end of the electric telescopic rod.

[0009] As a further optimization of the present invention, the inner side of the gas storage shell is a hollow structure, and through holes are provided at both the right end and the lower end of the gas storage shell. The lower end of the gas storage shell is connected to the inside of the extension cylinder through the through hole, and the right end of the gas storage shell is connected to the air inlet of the air pump through the through hole.

[0010] As a further optimization of the present invention, the anti-detachment component includes a fixing frame, a support base fixedly connected to the fixing frame near its upper end, a double threaded rod rotatably connected to the inner side of the support base via a bearing, an inner bore plate helically connected to the outer side of the double threaded rod, a guide post fixedly connected between the two support bases, the guide post slidably connected inside the inner bore plate, a fixing post fixedly connected to one side of the inner bore plate, a bearing fixedly connected to the outer side of the fixing post, and the fixing post rotatably connected to the pressure roller via the bearing.

[0011] As a further optimization of the present invention, the anti-detachment component is disposed at the right end of the pressing component, and a gap is provided between the bottom end of the fixing frame and the top end of the conveyor bracket.

[0012] As a further optimization of the present invention, the fixing column extends to the right end of the pressing assembly, the two pressure rollers are close to the lower end and fit against the outer side of the belt, and a gap is provided between the outer side of the pressure roller and the rubber strip.

[0013] A method for using a moisture-proof and oxidation-resistant matrix vacuum packaging equipment; Step 1: When vacuuming a bag made of a relatively soft material, the frame plate and the fixed frame are fixedly connected to the external support. The bag is placed on the upper end of the conveyor belt of the conveyor located at the rear end of the pressing component and extends to the right end of the conveyor belt. The conveyor conveys the bag forward. The rubber strip contacts the bag. After the bag opening moves to the bottom end of the rubber ring, the electric telescopic rod is activated to drive the connecting block plate to move downward. The connecting block plate drives the entire support component to move downward. The support component drives the limit telescopic rod to retract. The rubber ring presses down on the bag opening, so that the upper end of the bag opening is in close contact with the rubber ring and the lower end of the bag opening is in close contact with the upper end of the lower suction mechanism. The suction pump drives the air storage shell and the extension cylinder to evacuate air. The robotic arm controls the vacuum nozzle to move to the left and inserts the vacuum nozzle into the inside of the bag from the bag opening. Step 2: When the bag opening is pressurized, the belt rotates and is in close contact with the pressure roller, which will drive the pressure roller to rotate. The pressure roller rotates through the bearing and the fixed column. When the vacuum nozzle is inserted into the bag body, the pressure roller squeezes the belt, making the belt in close contact with the conveyor, and at the same time close to the belt between the two pressure rollers. Step 3: When adjusting the distance between the two pressure rollers according to the size of the bag, the double threaded rod rotates, which causes the two inner plates to move closer or further away at the same time. The inner plates slide on the outside of the guide post, and the distance between the two pressure rollers is adjusted to the required distance.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, by setting up a pressing component and a supporting component, the equipment does not need to open the bag in advance when handling bags with softer materials, which reduces the complexity of operation. During the process of the bag being transported by the conveyor belt, even if the bag opening is closed due to vibration or other reasons, it can automatically open the bag opening to ensure that the vacuum nozzle can be smoothly inserted into the bag, thereby achieving the effect of vacuuming. This design greatly improves the success rate of vacuuming and the degree of automation, and is especially suitable for vacuum packaging operations of a large number of individual bags in large-scale production, effectively improving production efficiency and packaging quality. 2. In this invention, the belt, fixing column and pressure roller are designed to effectively prevent the bag from shifting when the vacuum nozzle is inserted into the bag during vacuuming of softer bags. This effectively improves the accuracy and reliability of vacuuming, ensures the pass rate of vacuuming the bags, and is particularly suitable for packaging operations with high precision requirements, thereby improving the overall packaging quality and production efficiency. 3. In this invention, by using a double-threaded rod and an inner hole plate, the device can flexibly adjust the effective range of pressure according to the specific size of the bag opening. This adjustability not only improves the applicability of the device to bags of different sizes, but also ensures that the bag opening can be tightly pressed during the vacuuming process, effectively preventing air leakage, thereby improving the quality and reliability of vacuum packaging. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the vacuum pumping assembly structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure at point A; Figure 4 This is a schematic diagram of the supporting component structure of the present invention; Figure 5 This is a schematic diagram of the pressure-holding component structure of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the structure at point B; Figure 7 This is a schematic diagram of the rotating wheel structure of the present invention; Figure 8 This is a schematic diagram of the anti-detachment component structure of the present invention; Figure 9 This is a schematic diagram of the pressure roller structure of the present invention.

[0016] In the diagram: 1. Vacuum assembly; 11. Robotic arm; 12. Vacuum nozzle; 13. Hoses; 14. Vacuum pumping equipment; 2. Conveying assembly; 21. Conveyor; 22. Lower air extraction mechanism; 23. Electric telescopic rod; 24. Connecting block plate; 25. Limiting telescopic rod; 3. Supporting components; 31. Air storage shell; 32. Air pump; 33. Extension tube; 34. Rubber ring; 4. Holding assembly; 41. Frame plate; 42. Servo motor; 43. Rotating rod; 44. Rotating wheel; 45. Belt; 46. Rubber strip; 5. Anti-detachment component; 51. Fixing frame; 52. Support base; 53. Double threaded rod; 54. Inner hole plate; 55. Guide column; 56. Fixing column; 57. Pressure roller. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0019] Please see Figures 1-9 The present invention provides a technical solution: A moisture-proof and oxidation-resistant matrix vacuum packaging device and its usage method include a vacuuming component 1 and a conveying component 2. The upper end of the conveying component 2 is fixedly connected to a supporting component 3, a pressing component 4, and an anti-detachment component 5. The supporting component 3 includes an air storage shell 31. An air pump 32 is fixedly connected to the right side of the air storage shell 31. An extension cylinder 33 is fixedly connected to the bottom end of the air storage shell 31. A rubber ring 34 is fixedly connected to the bottom end of the extension cylinder 33. The pressing component 4 includes a frame plate 41. A servo motor 42 is fixedly connected to the right side of the frame plate 41. A rotating rod 43 is fixedly connected to the end of the main shaft of the servo motor 42. A rotating wheel 44 is fixedly connected to the outside of the rotating rod 43. A belt 45 is sleeved on the outside of the rotating wheel 44. A rubber strip 46 is fixedly connected between the two belts 45. A gap is provided between the bottom end of the frame plate 41 and the top end of the conveying component 2. The bottom end of the belt 45 is in contact with the upper end of the conveying component 2.

[0020] As a further implementation of this solution, the vacuum assembly 1 includes a robotic arm 11, with a vacuum nozzle 12 fixedly connected to the left end of the robotic arm 11 and a hose 13 fixedly connected to the right side of the vacuum nozzle 12. The hose 13 is fixedly connected to the top of the vacuuming device 14. Through the above settings, the accuracy of its insertion into the bag is ensured, and the efficiency and reliability of vacuuming are improved. As a further implementation of this solution, the conveying assembly 2 includes a conveyor 21. A lower suction mechanism 22 is fixedly connected to the inner side of the conveyor 21. An electric telescopic rod 23 and a limiting telescopic rod 25 are fixedly connected to the upper end of the conveyor 21. A connecting block plate 24 is fixedly connected to the piston rod end of the electric telescopic rod 23. The structure of the lower suction mechanism 22 is the same as that of the supporting assembly 3. The lower suction mechanism 22 is mirror-aligned with the upper end of the supporting assembly 3. The lower suction mechanism 22 extends upward from the bracket of the conveyor 21. Through the above settings, the stable conveying of the bag and the precise opening of the bag opening can be achieved. At the same time, the movement of the connecting block plate 24 can drive the overall movement of the supporting assembly 3, ensuring the smooth progress of the vacuuming process. As a further implementation of this solution, the front and rear ends of the gas storage shell 31 are fixedly connected to the connecting block plate 24 respectively. A gap is provided between the two extension cylinders 33. The gap between the extension cylinders 33 is aligned with the vacuum nozzle 12. The extension cylinders 33 are located at the left end of the electric telescopic rod 23. Through the above settings, a stable negative pressure environment can be formed. By aligning the gap between the extension cylinders 33 with the vacuum nozzle 12, it is ensured that the vacuum nozzle 12 can be smoothly inserted into the bag, thereby improving the efficiency and effect of vacuuming. As a further implementation of this solution, the inner side of the gas storage shell 31 is hollow, and through holes are provided at the right end and the lower end of the gas storage shell 31. The lower end of the gas storage shell 31 is connected to the inside of the extension cylinder 33 through the through hole, and the right end of the gas storage shell 31 is connected to the air inlet of the vacuum pump 32 through the through hole. Through the above settings, the gas flow during the vacuuming process is smoother, negative pressure can be formed quickly, the speed and effect of vacuuming are improved, and at the same time, the sealing is ensured to prevent air leakage. As a further implementation of this solution, the anti-detachment component 5 includes a fixing frame 51. A support base 52 is fixedly connected to the fixing frame 51 near its upper end. A double threaded rod 53 is rotatably connected to the inner side of the support base 52 via a bearing. An inner hole plate 54 is spirally connected to the outer side of the double threaded rod 53. A guide post 55 is fixedly connected between the two support bases 52. The guide post 55 is slidably connected inside the inner hole plate 54. A fixing post 56 is fixedly connected to one side of the inner hole plate 54. A bearing is fixedly connected to the outer side of the fixing post 56. The fixing post 56 is rotatably connected to the pressure roller 57 via the bearing. Through the above settings, it can adapt to bags of different sizes, improve the applicability and flexibility of the device. At the same time, the use of bearings reduces friction and improves the durability and stability of the device. As a further implementation of this solution, the anti-detachment component 5 is set at the right end of the pressing component 4, and a gap is set between the bottom end of the fixing frame 51 and the top end of the support of the conveyor 21. Through the above settings, sufficient space is provided for the conveying and operation of the bag, while also leaving space for the movement of the heating equipment. As a further implementation of this solution, the fixed column 56 extends to the right end of the pressure holding assembly 4, and the two pressure rollers 57 are close to the outer side of the belt 45 near the lower end. A gap is provided between the outer side of the pressure rollers 57 and the rubber strip 46. Through the above settings, the bag body can be effectively prevented from shifting during the vacuuming process, ensuring that the vacuum nozzle 12 can be smoothly inserted into the bag body, improving the accuracy and reliability of vacuuming. At the same time, the gap design between the pressure rollers 57 and the rubber strip 46 further enhances the stability and durability of the device.

[0021] Workflow: When vacuuming a bag made of relatively soft material, the frame plate 41 and the fixing frame 51 are fixedly connected to the external support, leaving a gap between the frame plate 41 and the top of the conveyor 21. The bag containing the contents is placed on the upper end of the conveyor belt of the conveyor 21 located at the rear end of the pressing assembly 4, with the bag opening extending towards the right end of the conveyor belt of the conveyor 21. The conveyor 21 conveys the bag forward. When the bag contacts the belt 45, the right end of the belt 45 and the conveyor 21 then... The belt 45, made of a relatively soft material, and the rubber strip 46, in contact with the bag body, work together to clamp the bag body, improving the stability of the conveying process by pressing it down. At this time, part of the right end of the bag body is located at the right end of the belt 45. When the bag opening moves to the bottom end of the rubber ring 34, the electric telescopic rod 23 is activated, causing the connecting block plate 24 to move downward. The connecting block plate 24 then causes the entire support assembly 3 to move downward, which in turn causes the limiting telescopic rod 25 to move downward. Contraction improves the stability of the downward movement of the air storage shell 31. The rubber ring 34 presses down on the bag opening, ensuring the upper end of the bag opening is tightly against the rubber ring 34, while the lower end of the bag opening is tightly against the upper end of the lower suction mechanism 22. Simultaneously, two suction pumps 32 are activated, drawing air from the air storage shell 31 and the extension cylinder 33, creating a negative pressure inside. The rubber ring 34 then acts as a seal. Finally, the electric telescopic rod 23 pushes the supporting assembly 3 upward, pushing the upper end of the bag opening upward. With the lower end of the bag opening still, the right end of the bag opening is in an open state. The vacuum nozzle 12 is moved to the left by the robotic arm 11, so that the vacuum nozzle 12 is inserted into the bag body from the bag opening. The two pressure rollers 57 press the belt 45, so that air can enter the bag opening near the belt 45 and the conveyor 21, thereby achieving the effect of vacuuming. The existing heating equipment is set on the upper right side of the belt 45. The heating equipment is controlled to move downward to contact the bag body, thereby achieving the effect of sealing the bag opening. When the bag opening is pressurized, as the belt 45 rotates, the belt 45 is in close contact with the pressure roller 57. Due to the friction, the pressure roller 57 will rotate. The pressure roller 57 rotates through the bearing and the fixed column 56. Through the shape design of the pressure roller 57, when the vacuum nozzle 12 is inserted into the bag body, the pressure roller 57 squeezes the belt 45, which can make the belt 45 close to the conveyor 21. At the same time, the belt 45 close to the two pressure rollers 57 is blocked by the pressure roller 57 to prevent the belt 45 from moving to the left when the vacuum nozzle 12 moves to the left and passes through the bag body. This improves the stability of vacuuming the bag body and increases the product qualification rate. When adjusting the distance between the two pressure rollers 57 according to the size of the bag, turn the handle at the left or right end of the double threaded rod 53 to drive the double threaded rod 53 to rotate. The rotation of the double threaded rod 53 causes the two inner plates 54 to move closer or further away at the same time. The inner plates 54 slide on the outside of the guide post 55, which serves to limit the movement of the inner plates 54 until the distance between the two pressure rollers 57 is adjusted to the required distance. This design improves the pressing effect on bags of various sizes and improves the convenience of using the device.

[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A moisture-proof and oxidation-resistant matrix vacuum packaging device, comprising a vacuuming component (1) and a conveying component (2), characterized in that: The upper end of the conveying component (2) is fixedly connected to a supporting component (3), a pressing component (4) and an anti-detachment component (5); The supporting component (3) includes an air storage shell (31), a vacuum pump (32) is fixedly connected to the right side of the air storage shell (31), an extension tube (33) is fixedly connected to the bottom end of the air storage shell (31), and a rubber ring (34) is fixedly connected to the bottom end of the extension tube (33). The pressing assembly (4) includes a frame plate (41), a servo motor (42) is fixedly connected to the right side of the frame plate (41), a rotating rod (43) is fixedly connected to the end of the main shaft of the servo motor (42), a rotating wheel (44) is fixedly connected to the outside of the rotating rod (43), a belt (45) is sleeved on the outside of the rotating wheel (44), and a rubber strip (46) is fixedly connected between the two belts (45). There is a gap between the bottom end of the frame plate (41) and the top end of the conveyor assembly (2), and the bottom end of the belt (45) is attached to the top end of the conveyor assembly (2).

2. The moisture-proof and oxidation-resistant matrix vacuum packaging equipment according to claim 1, characterized in that: The vacuum assembly (1) includes a robotic arm (11), a vacuum nozzle (12) is fixedly connected to the left end of the robotic arm (11), a hose (13) is fixedly connected to the right side of the vacuum nozzle (12), and the hose (13) is fixedly connected to the top end of the vacuum pump (14).

3. The moisture-proof and oxidation-resistant substrate vacuum packaging equipment according to claim 1, characterized in that: The conveying assembly (2) includes a conveyor (21), a lower air extraction mechanism (22) is fixedly connected to the inner side of the conveyor (21), an electric telescopic rod (23) and a limiting telescopic rod (25) are fixedly connected to the upper end of the conveyor (21), and a connecting block plate (24) is fixedly connected to the piston rod end of the electric telescopic rod (23).

4. The moisture-proof and oxidation-resistant matrix vacuum packaging equipment according to claim 3, characterized in that: The structure of the lower suction mechanism (22) is the same as that of the support assembly (3). The upper end of the lower suction mechanism (22) is mirror-aligned with the upper end of the support assembly (3). The lower suction mechanism (22) extends upward from the support of the conveyor (21).

5. The moisture-proof and oxidation-resistant matrix vacuum packaging equipment according to claim 1, characterized in that: The front and rear ends of the gas storage shell (31) are fixedly connected to the connecting block plate (24) respectively. There is a gap between the two extension tubes (33). The gap between the extension tubes (33) is aligned with the vacuum nozzle (12) on the left and right. The extension tube (33) is located at the left end of the electric telescopic rod (23).

6. The moisture-proof and oxidation-resistant matrix vacuum packaging equipment according to claim 1, characterized in that: The inner side of the gas storage shell (31) is hollow. The right end and the lower end of the gas storage shell (31) are provided with through holes. The lower end of the gas storage shell (31) is connected to the inside of the extension cylinder (33) through the through hole. The right end of the gas storage shell (31) is connected to the air inlet of the air pump (32) through the through hole.

7. The moisture-proof and oxidation-resistant matrix vacuum packaging equipment according to claim 1, characterized in that: The anti-detachment component (5) includes a fixing frame (51), a support base (52) is fixedly connected to the fixing frame (51) near the upper end, a double threaded rod (53) is rotatably connected to the inner side of the support base (52) through a bearing, an inner hole plate (54) is spirally connected to the outer side of the double threaded rod (53), a guide post (55) is fixedly connected between the two support bases (52), the guide post (55) is slidably connected to the inside of the inner hole plate (54), a fixing post (56) is fixedly connected to one side of the inner hole plate (54), a bearing is fixedly connected to the outer side of the fixing post (56), and the fixing post (56) is rotatably connected to the pressure roller (57) through the bearing.

8. The moisture-proof and oxidation-resistant matrix vacuum packaging equipment according to claim 7, characterized in that: The anti-detachment component (5) is located at the right end of the pressing component (4), and there is a gap between the bottom end of the fixing frame (51) and the top end of the support of the conveyor (21).

9. The moisture-proof and oxidation-resistant substrate vacuum packaging equipment according to claim 7, characterized in that: The fixed post (56) extends to the right end of the pressure assembly (4), and the two pressure rollers (57) are close to the lower end and fit against the outside of the belt (45). There is a gap between the outside of the pressure rollers (57) and the rubber strip (46).

10. A method of using a moisture-proof and oxidation-resistant matrix vacuum packaging device according to any one of claims 1-9, characterized in that: Step 1: When vacuuming a bag made of a relatively soft material, the frame plate (41) and the fixing frame (51) are fixedly connected to the external support. The bag is placed on the upper end of the conveyor belt of the conveyor (21) located at the rear end of the pressing assembly (4) and extends to the right end of the conveyor belt of the conveyor (21). The conveyor (21) conveys the bag forward, and the rubber strip (46) contacts the bag. After the bag opening moves to the bottom end of the rubber ring (34), the electric telescopic rod (23) is activated to drive the connecting block plate (24) to move downward. The plate (24) drives the support assembly (3) to move downward as a whole. The support assembly (3) drives the limit telescopic rod (25) to retract. The rubber ring (34) presses down on the bag opening, so that the upper end of the bag opening is in close contact with the rubber ring (34) and the lower end of the bag opening is in close contact with the upper end of the lower suction mechanism (22). The suction pump (32) drives the air storage shell (31) and the extension tube (33) to suck air. The robotic arm (11) controls the vacuum nozzle (12) to move to the left and inserts the vacuum nozzle (12) into the inside of the bag body from the bag opening. Step 2: When the bag opening is pressurized, the belt (45) rotates, and the belt (45) is in close contact with the pressure roller (57), which will cause the pressure roller (57) to rotate. The pressure roller (57) rotates through the bearing and the fixed column (56). When the vacuum nozzle (12) is inserted into the bag body, the pressure roller (57) squeezes the belt (45), making the belt (45) in close contact with the conveyor (21), and at the same time close to the belt (45) between the two pressure rollers (57). Step 3: When adjusting the distance between the two pressure rollers (57) according to the size of the bag, the double threaded rod (53) rotates. The rotation of the double threaded rod (53) drives the two inner holes (54) to move closer or further away at the same time. The inner holes (54) slide on the outside of the guide post (55) and the distance between the two pressure rollers (57) is adjusted to the required distance.

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