Vacuum sealer with automatic lid opening function and method of use thereof

Abstract

The application discloses a vacuum sealing machine with an automatic cover opening function, comprising: a machine body, a vacuum cavity arranged in the machine body, and a control unit, a vacuumizing unit and a pressure releasing unit arranged in the machine body, wherein the control unit is electrically connected with the vacuumizing unit and the pressure releasing unit; when the machine cover is closed, the guide piece and the guide rod go down for the first stroke, the side plate pushes the lock block to slide out laterally to lock the machine cover, and the vacuum cavity is closed; through the above arrangement, the vacuum sealing machine can be automatically opened after completing the sealing work; after sealing the packaging object each time, a user does not need to manually open the cover of the sealing machine, and the packaging object can be taken out. Not only the work efficiency is improved, but also the problem that the user may touch the surface of the packaging object during manually opening the sealing machine and increase the cross contamination risk is solved, which not only improves the work efficiency, but also reduces the downtime of the production line.

Description

Technical Field

[0001] This invention relates to a vacuum sealing machine with an automatic lid opening function and its usage method, belonging to the field of vacuum sealing machine technology. Background Technology

[0002] A vacuum sealer is a device used to seal packaging and create a vacuum environment to extend its shelf life. It is commonly used in industries such as food, pharmaceuticals, and cosmetics to ensure product quality and freshness.

[0003] Typically, the workflow of a vacuum sealer involves placing the items to be packaged into a bag or container. The sealing device heats the sealing material (such as a plastic bag) to seal it together, forming a seal. A vacuum system then removes air from the bag or container, creating a vacuum environment. This helps prevent the entry of oxygen and moisture, thus extending the product's shelf life.

[0004] Existing vacuum sealing machines typically lack an automatic opening mechanism after the sealing process is complete. This means that users need to manually open the sealing machine's lid to remove the sealed packaged goods.

[0005] This method of opening has some problems and inconveniences:

[0006] This means that after each package is sealed, the user needs to manually open the sealing machine's lid to remove the package. This requires additional manpower and may reduce work efficiency. Furthermore, the user may come into contact with the package surface during the manual opening process, increasing the risk of cross-contamination. This is especially problematic in large-scale production environments where the sealing machine needs to be opened and closed frequently to retrieve packages. This leads to reduced work efficiency and increased production line downtime.

[0007] Therefore, existing vacuum sealing machines cannot automatically open after sealing, leading to inconvenience. To solve this problem, further technological improvements and innovations may be needed to design a vacuum sealing machine that can automatically open after sealing, thereby improving work efficiency and ease of use. Summary of the Invention

[0008] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a vacuum sealing machine with automatic lid opening function and its usage method, so as to solve the problems of the existing technology.

[0009] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0010] A vacuum sealing machine with automatic lid opening function, comprising:

[0011] The machine body includes a vacuum chamber located inside the machine body, and a control unit, a vacuum pumping unit, and a pressure relief unit located inside the machine body. The control unit is electrically connected to the vacuum pumping unit and the pressure relief unit.

[0012] The vacuum chamber can be closed or opened by rotating the cover mounted on the top of the machine body and flipping the cover. The cover has a snap-fit ​​groove on its side.

[0013] An automatic lid opening mechanism includes a locking block disposed on at least one side of the body, an automatic lid opening assembly, and a positioning assembly;

[0014] When the cover is closed, the automatic opening assembly is in a locked state where it is compressed downwards and locked by the positioning assembly. At this time, the locking block moves horizontally along the direction close to the latching groove under the action of the automatic opening assembly and engages with the latching groove.

[0015] After vacuuming and hot pressing are completed, the pressure relief unit releases the air pressure inside the vacuum chamber to drive the positioning component to release the locking state of the automatic opening component and enter the release state. At this time, the automatic opening component is released and moves upward, driving the locking block to move horizontally away from the latching groove and disengage from the latching groove. Furthermore, the automatic opening component moves upward further to automatically open the cover.

[0016] As a further improvement, the automatic lid opening mechanism includes a guide frame that is longitudinally slidably disposed on the inner side wall of the machine body. The guide frame includes a set of symmetrically arranged side plates. The side plates are provided with inclined through grooves, and the locking block is slidably installed in the through grooves.

[0017] A guide plate is fixedly installed below the side plate, with one end of the guide plate extending toward one side of the vacuum cavity and inserted into the side of the vacuum cavity;

[0018] A guide rod is fixedly installed below the side plate, and a positioning component is provided on the side of the guide rod, and a spring is provided below the guide rod;

[0019] The guide plate overlaps with the side of the cover.

[0020] When the cover is flipped downwards, the guide plate and guide rod move downwards, compressing the spring. The locking block, guided by the through groove, extends towards one side of the cover and inserts into the buckle groove, fixing the position of the guide rod through the positioning component.

[0021] As a further improvement, the lower part of one end of the guide plate forms a communication portion with the vacuum cavity.

[0022] As a further improvement, the positioning assembly includes a positioning handle rotatably mounted on one side of the guide rod, the end of which has a constraint portion extending outward.

[0023] A sleeve is fitted over the outside of the guide rod, and the sleeve has a guide groove, into which the constraint part is inserted.

[0024] As a further improvement, the guide groove includes a first guide portion arranged vertically, a second guide portion located below the first guide portion and arranged at an angle, a third guide portion on the side of the second guide portion when arranged horizontally, and a snap-fit ​​portion arranged above the middle of the third guide portion, the end of the third guide portion being arranged at an angle upward, and the snap-fit ​​portion protruding downward.

[0025] As a further improvement, a set of symmetrical shafts are provided on both sides of the cover extending outward. The shafts are rotatably inserted into the body, and a torsion spring is sleeved on the outer ring surface of the shaft. One end of the torsion spring is embedded and fixed inside the body.

[0026] The beneficial effects of this invention are:

[0027] This invention achieves the sealing of the vacuum chamber by setting a positioning component and an automatic cover opening mechanism. When the cover is closed, the guide plate and guide rod move downward for the first stroke, and cooperate with the side plate to push the locking block to slide out laterally and lock the cover.

[0028] During the vacuuming process inside the vacuum chamber, the guide plate and guide rod are guided to descend to the second stroke by gradually increasing negative pressure. In conjunction with the side plate, the locking block is pushed to further lock the cover by lateral fine adjustment. At the same time, the positioning component is released from the fixing mode of the automatic cover opening mechanism and replaced by the fixing mode of the automatic cover opening mechanism by the negative pressure inside the vacuum chamber.

[0029] After completing the vacuuming and sealing operations, the vacuum chamber is depressurized by setting up a control unit and a pressure relief unit. At the same time, the negative pressure inside the vacuum chamber is released from the fixed mode of the automatic lid opening mechanism, allowing the automatic lid opening mechanism to guide the lid to open automatically in the reverse direction.

[0030] With the above settings, the vacuum sealer can automatically open after completing the sealing process. After each package is sealed, the user can remove it without manually opening the sealer's lid. This not only improves work efficiency but also eliminates the risk of cross-contamination that could occur when users manually open the sealer, potentially coming into contact with the package surface. This is especially beneficial in large-scale production environments, as it eliminates the need for frequent opening and closing of the sealer to retrieve packages. This not only increases work efficiency but also reduces production line downtime. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the open state of a vacuum sealing machine with automatic lid opening function according to the present invention.

[0033] Figure 2 This is a schematic diagram of the closed state of a vacuum sealing machine with automatic lid opening function according to the present invention.

[0034] Figure 3 This is a schematic diagram of a vacuum sealing machine with an automatic opening function that automatically pops open after the work is completed.

[0035] Figure 4 This is a top view schematic diagram of a vacuum sealing machine with automatic lid opening function according to the present invention.

[0036] Figure 5 yes Figure 4 Cross-sectional structural diagram and enlarged partial schematic diagram at point D.

[0037] Figure 6 This is an exploded structural diagram of the automatic cap opening mechanism in a vacuum sealing machine with automatic cap opening function according to the present invention.

[0038] Figure 7 This is a schematic diagram of the installation state of an automatic lid opening mechanism according to the present invention.

[0039] Figure 8 This is a schematic diagram of the movement state of an automatic lid-opening mechanism according to the present invention.

[0040] Figure 9 This is a side view of the internal structure of a vacuum sealing machine with automatic lid opening function according to the present invention.

[0041] Figure 10 This is a schematic diagram of the module control of a vacuum sealing machine with automatic lid opening function according to the present invention.

[0042] Figure 11 This is a diagram illustrating the steps of using a vacuum sealing machine with an automatic lid opening function according to the present invention.

[0043] 1. Body; 2. Cover; 21. Snap-in groove; 22. Shaft; 23. Torsion spring; 3. Automatic cover opening mechanism; 31. Automatic cover opening mechanism; 311. Guide frame; 312. Side plate; 3121. Through groove; 313. Guide plate; 3131. Connecting part; 314. Guide rod; 315. Spring; 32. Positioning assembly; 321. Positioning handle; 3211. Constraint part; 322. Sleeve; 3221. Guide groove; 33. Locking block; 3222. First guide part; 3223. Second guide part; 3224. Third guide part; 3225. Snap-fit ​​part. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 a part of the embodiments of the present invention, not all of them. 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. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to represent selected embodiments of the invention. 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.

[0045] In the description of this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0046] Existing vacuum sealing machines do not automatically open after sealing, causing inconvenience. To solve this problem, further technological improvements and innovations may be needed. The goal is to design a vacuum sealing machine that automatically opens after sealing, thereby improving work efficiency and ease of use. Details are as follows:

[0047] Reference Figure 1-11 As shown, a vacuum sealing machine with an automatic lid opening function includes:

[0048] The machine body 1 includes a vacuum chamber 11 disposed inside the machine body 1, and a control unit, a vacuum pumping unit, a pressure relief unit, and a hot pressing unit disposed inside the machine body 1. The control unit is electrically connected to the vacuum pumping unit, the pressure relief unit, and the hot pressing unit.

[0049] Rotate the cover 2 mounted on the top of the body 1, and flip the cover 2 to close or open the vacuum chamber 11. The cover 2 has a buckle groove 21 on its side.

[0050] The automatic lid opening mechanism 3 includes a locking block 33 disposed on at least one side of the body 1, an automatic lid opening component 31, and a positioning component 32;

[0051] When the cover 2 is closed, the automatic opening assembly 31 is in a locked state where it is compressed downward and locked by the positioning assembly 32. At this time, the locking block 33 moves horizontally along the direction close to the buckle groove 21 and engages with the buckle groove 21 under the drive of the automatic opening assembly 31.

[0052] After vacuuming and hot pressing are completed, the pressure relief unit releases the air pressure inside the vacuum chamber 11 to drive the positioning component 32 to release the locking state of the automatic opening component 31 and enter the release state. At this time, the automatic opening component 31 is released and moves upward, driving the locking block 33 to move horizontally away from the buckle groove 21 and disengage from the buckle groove 21. Furthermore, the automatic opening component 31 moves upward further to automatically open the cover 2.

[0053] Among them, the locking block 33, which is laterally slidably disposed on the inner side wall of the body 1, matches the buckle groove 21;

[0054] An automatic opening assembly 31 is provided in the inner wall of the body 1, and a positioning assembly 32 is located on one side of the automatic opening assembly 31 for locking the automatic opening assembly 31. The automatic opening assembly 31 drives the locking block 33 to slide laterally.

[0055] Flip the cover 2 over, and through the cooperation of the automatic cover opening component 31 and the positioning component 32, guide the locking block 33 to slide horizontally inward and stably insert it into the buckle groove 21;

[0056] After the vacuuming is completed by the cooperation of the control unit and the vacuuming unit, the constraint of the positioning component 32 on the automatic opening component 31 is released and replaced. The pressure inside the vacuum chamber 11 is released by the pressure relief unit, and the automatic opening component 31 is driven to control the locking block 33 to slide outward to open the cover 2.

[0057] The control unit is electrically connected to the vacuum pumping unit and the pressure relief unit. The output terminal of the control unit is connected to the input terminals of the vacuum pumping unit and the pressure relief unit 14.

[0058] By setting the positioning component 32 and the automatic cover opening component 31, when the cover 2 is closed, the guide plate 313 and the guide rod 314 move downward for the first stroke, and cooperate with the side plate 312 to push the locking block 33 to slide out laterally and lock the cover 2, thereby achieving the sealing of the vacuum chamber 11;

[0059] During the vacuuming process inside the vacuum chamber 11, the guide plate 313 and guide rod 314 are guided to descend to the second stroke by gradually increasing negative pressure. In conjunction with the side plate 312, the locking block 33 is pushed to further lock the cover 2 by lateral fine adjustment. At the same time, the positioning component 32 is released from the fixing mode of the automatic cover opening component 31 and replaced by the fixing mode of the automatic cover opening component 31 by the negative pressure inside the vacuum chamber 11.

[0060] After completing the vacuuming and sealing operations, the vacuum chamber 11 is depressurized by setting up a control unit and a pressure relief unit. At the same time, the negative pressure inside the vacuum chamber 11 is released from the fixed mode of the automatic lid opening component 31, so that the automatic lid opening component 31 guides the lid 2 to open automatically in the reverse direction.

[0061] With the above settings, the vacuum sealer can automatically open after completing the sealing process. After each package is sealed, the user can remove it without manually opening the sealer's lid. This not only improves work efficiency but also eliminates the risk of cross-contamination that could occur when users manually open the sealer, potentially coming into contact with the package surface. This is especially beneficial in large-scale production environments, as it eliminates the need for frequent opening and closing of the sealer to retrieve packages. This not only increases work efficiency but also reduces production line downtime.

[0062] In this embodiment, the control unit is an independent electronic device, a microcontroller module. A microcontroller module is typically a single-chip computer integrating a processor, memory, input / output interfaces, etc., suitable for controlling relatively simple devices or systems. An industrial control computer (ICC), on the other hand, is a more powerful computer, usually running specialized control software, suitable for control systems with high computing power requirements. A power supply computer (PLC) is a device specifically designed for industrial control, characterized by stability, reliability, and strong anti-interference capabilities, used to control various equipment and machines on industrial production lines. It is a module or component responsible for controlling and coordinating the operation of the entire system. The control unit may be an electronic control system used to control the machine's start-up, operation, and stop, as well as monitor and adjust various operating parameters. A control unit typically includes a microprocessor, sensors, actuators, and corresponding electronic and electrical components; it can receive input signals, perform logical judgments, issue control commands, and achieve automated operation.

[0063] A vacuum pumping unit is a component or system used to create a vacuum environment in equipment or a system. It typically consists of a vacuum pump and corresponding piping, valves, and sensors. The vacuum pump is the core component for pumping gas; common types include rotary vane pumps, screw pumps, and turbomolecular pumps, which differ in their working principles and structures, but all are capable of pumping gas from a container or system.

[0064] A pressure relief unit is generally a component or system used to release pressure or gas in equipment or systems. In industrial and scientific fields, pressure relief units are commonly used to control the release of internal pressure, gas, or liquid to ensure safety or meet specific process requirements.

[0065] Pressure relief units typically include the following components and parts:

[0066] Pressure relief valve: Used to release internal pressure in the system. It opens when the pressure exceeds a set value, releasing the pressure to within the set range. Common types of pressure relief valves include safety valves and safety pressure relief valves.

[0067] Pressure sensor: Used to monitor the internal pressure of the system to ensure that the pressure relief valve can be triggered in a timely manner when needed.

[0068] Control system: Used to monitor and control the decompression process, and may include components such as controllers and actuators to achieve automated decompression operation.

[0069] In order to enable the automatic lid opening assembly 31 to achieve lateral drive of the locking block 33, the automatic lid opening assembly 31 includes a guide frame 311 that is longitudinally slidably disposed on the inner side wall of the body 1. The guide frame 311 includes a set of symmetrically arranged side plates 312. The side plates 312 are inclinedly provided with through grooves 3121, and the locking block 33 is slidably installed in the through grooves 3121.

[0070] A guide plate 313 is fixedly installed below the side plate 312. One end of the guide plate 313 extends toward the side of the vacuum chamber 11 and is inserted into the side of the vacuum chamber 11.

[0071] A guide rod 314 is fixedly installed below the side plate 312. A positioning component 32 is provided on the side of the guide rod 314, and a spring 315 is provided below the guide rod 314.

[0072] In order to enable the guide plate 313 to be driven during the pressing process of the cover 2, the guide plate 313 overlaps with the side of the cover 2.

[0073] When the cover 2 is flipped downwards, the guide plate 313 and the guide rod 314 move downwards, compressing the spring 315. The locking block 33, guided by the through groove 3121, extends toward one side of the cover 2 and is inserted into the buckle groove 21. The position of the guide rod 314 is fixed by the positioning component 32.

[0074] To enable the guide plate 313 to move further while simultaneously unlocking the guide plate, the increased negative pressure inside the vacuum chamber 11 allows it to be driven further. Therefore, a communication portion 3131 is formed between the guide plate 313 and the vacuum chamber 11 below one end. The closed cover 2 cooperates with the guide plate 313, the body 1, and the vacuum chamber 11 to form a guide channel below the guide plate 313. Under the attraction of the increased negative pressure inside the vacuum chamber 11, the guide plate 313 can move downward.

[0075] It should be emphasized that the height of the guide channel does not exceed the height of the guide plate 313. Therefore, when the guide plate 313 moves down to the bottom, the upper part is still in a tight fit with the body 1, so that the negative pressure can achieve a stable adsorption and fixation effect on the guide plate 313.

[0076] When the cover 2 is flipped down to cover the vacuum chamber 11, the lower side surface of the cover 2 is in contact with the guide plate 313.

[0077] In this embodiment, the through groove 3121 is set to a reverse slash state. When the guide rod 314 moves downward, the locking block 33 is guided to extend laterally through the through groove 3121; when the guide rod 314 moves upward, the locking block 33 is guided to retract laterally through the through groove 3121.

[0078] In order to fix the positioning component 32 to the automatic opening component 31, the positioning component 32 includes a positioning handle 321 rotatably mounted on one side of the guide rod 314, and the end of the positioning handle 321 extends outward with a constraint part 3211.

[0079] A sleeve 322 is fitted outside the guide rod 314, and a guide groove 3221 is provided on the sleeve 322. The constraint part 3211 is inserted into the guide groove 3221.

[0080] The guide groove 3221 includes a first guide portion 3222 arranged vertically, a second guide portion 3223 located below the first guide portion 3222 and arranged at an angle, a third guide portion 3224 on the side of the second guide portion 3223 when arranged horizontally, and a snap-fit ​​portion 3225 arranged above the middle of the third guide portion 3224. The end of the third guide portion 3224 is arranged obliquely upward, and the snap-fit ​​portion 3225 protrudes downward.

[0081] When the cover 2 is flipped downwards, the guide plate 313 and the guide rod 314 move downwards for the first stroke, compressing the spring 315. The locking block 33, guided by the through groove 3121, extends towards one side of the cover 2 and inserts into the buckle groove 21, forming a constraint on the return of the guide rod 314.

[0082] The first stroke is as follows: the constraint part 3211 moves from the first guide part 3222 through the second guide part 3223 and enters the third guide part 3224. When the cover 2 is released, the spring 315 pushes the guide rod 314 to drive the positioning handle 321 to rise, so that the constraint part 3211 is locked on the right side of the locking part 3225, thereby forming a constraint on the reset of the guide rod 314.

[0083] When the vacuum chamber 11 is in a vacuum state, the guide plate 313 forms a communication part 3131 with the vacuum chamber 11 at one end. The continuous negative pressure causes the guide plate 313 and the guide rod 314 to move down a second stroke, which can release the constraint of the positioning component 32 on the guide rod 314. At the same time, by continuously replacing the constraint of the positioning component 32 on the guide rod 314 with the negative pressure, after the pressure is released inside the vacuum chamber 11, the guide rod 314 loses its constraint. Through the reset push of the spring 315, the guide plate 313 and the guide rod 314, the cover 2 automatically flips upward.

[0084] The second stroke is as follows: the constraint part 3211 extends downward along the protruding edge of the latching part 3225, passes the highest point of the protrusion, and breaks free from the constraint state of the latching part 3225, forming a free state. When the internal negative pressure is released by the pressure relief unit inside the vacuum chamber 11, during the process of the spring 315 pushing the guide rod 314 upward, the constraint part 3211 extends from the third guide part 3224 along the second guide part 3223 and enters the first guide part 3222, causing the guide rod 314 to be released from the constraint state and reset.

[0085] In this embodiment, the constraint part 3211 has an outer arc-shaped structure.

[0086] To improve the opening angle of the cover 2 after it is actively released, a set of symmetrical shafts 22 are provided on both sides of the cover 2. The shafts 22 are rotatably inserted into the body 1, and a torsion spring 23 is sleeved on the outer ring of the shaft 22. One end of the torsion spring 23 is embedded and fixed inside the body 1. With the torsion spring 23, when the cover 2 is in a stable closed state, the torsion spring 23 is stretched and unfolded. When the cover 2 is released from the stable state, the restoring potential energy of the torsion spring 23 drives the cover 2 to rotate upward about the shaft 22, thereby opening the cover 2. The opening angle of the cover 2 is directly proportional to the elastic potential energy of the torsion spring 23. When the elastic potential energy of the torsion spring 23 is large, the opening angle of the cover 2 is large; when the elastic potential energy of the torsion spring 23 is small, the opening angle of the cover 2 is small.

[0087] In this embodiment, the height of the locking block 33 is matched with the buckle groove 21 on the side of the closed cover 2.

[0088] The following describes the automatic cap opening method of a vacuum sealer with an automatic cap opening function. The steps include:

[0089] S1, place the vacuum bag opening in the internal operating cavity of the machine body, flip the machine cover 2 downwards, and fix the machine cover 2 on the machine body to form the first stage of limiting and fixing the machine cover 2, so that a vacuum cavity 11 is formed between the machine body and the machine cover 2.

[0090] S11, by pressing the spring 315 in the automatic opening assembly 31 by the cover 2, the automatic opening assembly 31 synchronously controls the locking block 33 to gradually insert into the cover 2, and drives the positioning assembly 32 to perform the first stage of limiting and fixing the automatic opening assembly 31, forming the fixed fastening state of the cover 2.

[0091] S2, the vacuum chamber 11 is evacuated by the cooperation of the control unit and the vacuum pumping unit; wherein, the negative pressure inside the vacuum chamber 11 replaces the positioning component 32 in fixing the automatic opening component 3131, forming the second stage of the limiting and fixing state.

[0092] S3, after heat-sealing the vacuum bag, the vacuum chamber 11 is depressurized through the cooperation of the control unit and the depressurization unit;

[0093] S4, after the negative pressure is released, the second stage of the limit fixation state of the cover 2 is automatically released;

[0094] S5, by resetting the automatic cover opening component 3131, the cover 2 is pushed upward to flip, so that the cover 2 opens automatically.

[0095] In step S11, the over-cover 2 presses the spring 315 in the automatic cover opening assembly 31, and the automatic cover opening assembly 31 synchronously controls the locking block 33 to gradually insert into the cover 2, and drives the positioning assembly 32 to perform the first stage of limiting and fixing the automatic cover opening assembly 31, forming a fixed fastening state of the cover 2, specifically including:

[0096] S111, the cover 2 presses down to push the guide plate 313, the side plate 312 drives the guide rod 314, and the side plate 312 moves down a first stroke distance. By cooperating with the through groove 3121 on the side plate 312, the locking block 33 is pushed out to the side and inserted into one side of the cover 2.

[0097] S112, the guide rod 314, which has completed the first stroke, is fixed by the positioning component 32, specifically as follows:

[0098] The positioning handle 321, which is installed on the side of the guide rod 314, moves on the sleeve 322. The constraint part 3211 of the positioning handle 321 moves from the first guide part 3222 on the sleeve 322, through the second guide part 3223, and into the third guide part 3224. When the cover 2 is released, the spring 315 pushes the guide rod 314 to drive the positioning handle 321 to rise, so that the constraint part 3211 is locked on the right side of the locking part 3225, thereby forming a constraint on the reset of the guide rod 314.

[0099] In step S2, the negative pressure inside the vacuum chamber 11 replaces the positioning component 32 in fixing the automatic opening component 3131, forming a second-stage limiting and fixing state, specifically including:

[0100] The guide plate 313 forms a communication part 3131 with the vacuum chamber 11 at one end. Under the continuously increasing negative pressure in the vacuum chamber 11, the guide plate 313 moves downward, and the space communicating with the vacuum chamber 11 is reduced, realizing the movement of the second stroke. During this period, the constraint of the positioning component 32 on the guide rod 314 can be released. Under the negative pressure state, the constraint of the positioning component 32 on the guide rod 314 is replaced by the continuous negative pressure, forming the second stage of the limiting and fixing state.

[0101] During the second stroke movement, the constraint of the positioning component 32 on the guide rod 314 can be released. The specific steps are as follows:

[0102] As the guide rod 314 descends, the constraint portion 3211 on the positioning handle 321 extends downward along the protruding edge of the snap-fit ​​portion 3225 on the sleeve 322, passing the highest point of the protrusion and disengaging from the constraint state of the snap-fit ​​portion 3225, thus forming a free state. When the internal negative pressure inside the vacuum chamber 11 is released through the pressure relief unit, as the spring 315 pushes the guide rod 314 upward, the constraint portion 3211 extends from the third guide portion 3224 along the second guide portion 3223 and enters the first guide portion 3222, causing the guide rod 314 to be released from its constraint state and reset, thereby realizing the release of the constraint of the positioning component 32 on the guide rod 314.

[0103] In step S4, after the negative pressure is released, the second segment of the limiting and fixing state of the cover 2 is automatically released, specifically including:

[0104] After a preset time of vacuuming, the control unit and the pressure relief unit work together to release the internal pressure of the vacuum chamber 11, causing the guide plate 313 to lose its adsorption force and automatically releasing the second stage of the limiting and fixing state.

[0105] In step S5, the automatic cover opening component 31 is reset, which pushes the cover 2 to flip upward, causing the cover 2 to open automatically.

[0106] With the help of the spring 315 below the guide rod 314, the guide plate 313 pushes the cover 2 to move upward and open.

[0107] The preset time can be set to different durations depending on the mode.

[0108] It should be noted that the device structure and accompanying drawings of this invention mainly describe the principle of this invention. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above invention, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0109] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0110] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the invention should be included within the scope of protection of the invention.

Claims

1. A vacuum sealing machine with an automatic lid opening function, characterized in that, include: The machine body (1), a vacuum chamber (11) disposed inside the machine body (1), and a control unit, a vacuum pumping unit, a pressure relief unit and a hot pressing unit disposed inside the machine body (1), wherein the control unit is electrically connected to the vacuum pumping unit, the pressure relief unit and the hot pressing unit; The cover (2) is rotatably mounted on the top of the body (1). The cover (2) can close or open the vacuum chamber (11). The cover (2) has a buckle groove (21) on its side. The automatic lid opening mechanism (3) includes a locking block (33) disposed on at least one side of the body (1), an automatic lid opening component (31), and a positioning component (32). When the cover (2) is closed, the automatic opening assembly (31) is in a locked state where it is compressed downward and locked by the positioning assembly (32). At this time, the locking block (33) moves horizontally along the direction close to the buckle groove (21) and engages with the buckle groove (21) under the drive of the automatic opening assembly (31). After vacuuming and hot pressing are completed, the pressure relief unit releases the air pressure inside the vacuum chamber (11) to drive the positioning component (32) to release the locking state of the automatic opening component (31) and enter the release state. At this time, the automatic opening component (31) is released and moves upward, driving the locking block (33) to move horizontally away from the buckle groove (21) and disengage from the buckle groove (21). The automatic opening component (31) further moves upward and automatically pushes open the machine cover (2). The automatic opening assembly (31) includes a guide frame (311) that is longitudinally slidably disposed on the inner side wall of the body (1). The guide frame (311) includes a guide plate (313). One end of the guide plate (313) extends toward the vacuum chamber (11), and the lower part of one end of the guide plate (313) forms a communication part (3131) with the vacuum chamber (11). The positioning assembly (32) includes a positioning handle (321) rotatably mounted on one side of the guide rod (314), and a constraint portion (3211) extends outward from the end of the positioning handle (321). A sleeve (322) is fitted outside the guide rod (314), and a guide groove (3221) is provided on the sleeve (322), and the constraint part (3211) is inserted into the guide groove (3221); Among them, the cover (2) is flipped over, and the guide frame (311) is controlled to move down through the cooperation of the cover (2) and the guide plate (313). The locking block (33) is guided to slide horizontally inward through the cooperation of the constraint part (3211) and the guide groove (3221), and is stably inserted into the buckle groove (21). The guide frame (311) includes a set of symmetrically arranged side plates (312), and the side plates (312) are provided with inclined through grooves (3121), and the locking block (33) is slidably installed in the through grooves (3121); A guide plate (313) is fixedly installed below the side plate (312). One end of the guide plate (313) extends toward the side of the vacuum chamber (11) and is inserted into the side of the vacuum chamber (11). A guide rod (314) is fixedly installed below the side plate (312). The guide rod (314) is provided with a positioning component (32) on its side and a spring (315) is provided below the guide rod (314). The guide plate (313) overlaps with the side of the cover (2); When the cover (2) is flipped downwards, the guide plate (313) and the guide rod (314) move downwards and compress the spring (315). The locking block (33) extends towards the side of the cover (2) under the guidance of the through groove (3121) and is inserted into the buckle groove (21). The position of the guide rod (314) is fixed by the positioning component (32). The guide groove (3221) includes a first guide portion (3222) arranged vertically, a second guide portion (3223) located below the first guide portion (3222) and arranged at an angle, a third guide portion (3224) arranged horizontally on the side of the second guide portion (3223), and a snap-fit ​​portion (3225) arranged above the middle part of the third guide portion (3224). The end of the third guide portion (3224) is arranged obliquely upward, and the snap-fit ​​portion (3225) protrudes downward.

2. A vacuum sealing machine with automatic lid opening function according to claim 1, characterized in that: The cover (2) has a set of symmetrical shafts (22) extending outward on both sides. The shafts (22) are rotatably inserted into the body (1). A torsion spring (23) is sleeved on the outer ring of the shaft (22). One end of the torsion spring (23) is embedded and fixed inside the body (1).

3. A method of using a vacuum sealing machine with automatic lid opening function, comprising using a vacuum sealing machine with automatic lid opening function as described in any one of claims 1-2, characterized in that, Includes the following steps: S1, place the vacuum bag opening in the internal operating cavity of the machine body, flip the machine cover (2) downwards, and fix the machine cover (2) on the machine body to form the first stage of limiting and fixing state of the machine cover (2), so that a vacuum cavity (11) is formed between the machine body and the machine cover (2). S11, by pressing the spring (315) in the automatic opening assembly (31) by the cover (2), the automatic opening assembly (31) synchronously controls the locking block (33) to gradually insert into the cover (2), and drives the positioning assembly (32) to perform the first stage of limiting and fixing the automatic opening assembly (31), forming the fixed fastening state of the cover (2); S2, the vacuum chamber (11) is evacuated by the cooperation of the control unit and the vacuum pumping unit; wherein, the negative pressure inside the vacuum chamber (11) replaces the positioning component (32) in fixing the automatic opening component (31), forming the second stage of the limiting and fixing state. S3, after heat-sealing the vacuum bag, the vacuum chamber (11) is depressurized through the cooperation of the control unit and the depressurization unit; S4, after the negative pressure is released, the second limit fixing state of the cover (2) is automatically released; S5, by resetting the automatic opening component (31), the cover (2) is pushed to flip upward, so that the cover (2) opens automatically.

4. The method of using a vacuum sealing machine with automatic lid opening function according to claim 3, characterized in that: In step S11, the cover (2) presses the spring (315) in the automatic cover opening assembly (31), and the automatic cover opening assembly (31) synchronously controls the locking block (33) to gradually insert into the cover (2), and drives the positioning assembly (32) to perform the first stage of limiting and fixing the automatic cover opening assembly (31), forming a fixed fastening state of the cover (2), specifically including: S111, the cover (2) presses down to push the guide plate (313), the side plate (312) drives the guide rod (314), and the side plate (312) moves down a first stroke distance. By cooperating with the through groove (3121) on the side plate (312), the locking block (33) is pushed out to the side and inserted into one side of the cover (2); S112, the guide rod (314) that has completed the first stroke is fixed by the positioning component (32), specifically as follows: The positioning handle (321) installed on the side of the guide rod (314) moves on the sleeve (322). The constraint part (3211) of the positioning handle (321) moves from the first guide part (3222) on the sleeve (3222) through the second guide part (3223) and into the third guide part (3224). When the cover (2) is released, the spring (315) pushes the guide rod (314) to drive the positioning handle (321) to rise, so that the constraint part (3211) is locked on the right side of the locking part (3225), thereby forming a constraint on the reset of the guide rod (314).

5. The method of using a vacuum sealing machine with automatic lid opening function according to claim 3, characterized in that: In step S2, the negative pressure inside the vacuum chamber (11) replaces the positioning component (32) in fixing the automatic opening component (31), forming a second-stage limiting and fixing state, specifically including: The guide plate (313) forms a communication part (3131) with the vacuum cavity (11) at one end below. Under the continuously increasing negative pressure in the vacuum cavity (11), the guide plate (313) moves down, and the space communicating with the vacuum cavity (11) shrinks, realizing the movement of the second stroke. During this period, the constraint of the positioning component (32) on the guide rod (314) can be released. Under the negative pressure state, the constraint of the positioning component (32) on the guide rod (314) is replaced by the continuous negative pressure, forming the second stage of the limiting and fixing state. During the second stroke movement, the constraint of the positioning component (32) on the guide rod (314) can be released. The specific steps are as follows: As the guide rod (314) descends, the constraint part (3211) on the positioning handle (321) extends down along the protruding edge of the snap-fit ​​part (3225) on the sleeve (322), passes the highest point of the protrusion, and breaks free from the constraint state of the snap-fit ​​part (3225), forming a free state. When the internal negative pressure is released by the pressure relief unit inside the vacuum chamber (11), as the spring (315) pushes the guide rod (314) upward, the constraint part (3211) extends from the third guide part (3224) along the second guide part (3223) and enters the first guide part (3222), causing the guide rod (314) to be released from the constraint state and reset, thereby realizing the release of the constraint of the positioning component (32) on the guide rod (314).

6. The method of using a vacuum sealing machine with automatic lid opening function according to claim 3, characterized in that: In step S4, after the negative pressure is released, the second limiting and fixing state of the cover (2) is automatically released, specifically including: After a preset time of vacuuming, the control unit and the pressure relief unit work together to release the internal pressure of the vacuum chamber (11), causing the guide plate (313) to lose its adsorption force, thus achieving the automatic release of the second stage of the fixed state.

7. The method of using a vacuum sealing machine with automatic lid opening function according to claim 3, characterized in that: In step S5, the automatic opening assembly (31) is reset and pushed by the spring (315) below the guide rod (314), causing the guide plate (313) to push the cover (2) upward to achieve automatic opening.

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