Self-adaptive air pressure adjusting vacuum packaging machine

Abstract

The invention relates to the technical field of vacuum packaging machines, in particular to a self-adaptive air pressure adjusting vacuum packaging machine. Comprising a case; the sealing cover is hinged to the case; the self-adaptive mechanism is arranged in the case and comprises a vacuum tube, and the vacuum tube is fixedly mounted in the case; two ends of the adjusting pipe are respectively communicated with the vacuum pipe and a vacuum pump in the case; the movable disc is installed in the adjusting pipe in a sliding mode in the front-back direction. Through the design of the self-adaptive mechanism, when cooked food is subjected to vacuum packaging, the elastic belt can be twisted by rotating the adjusting shaft, so that the elasticity of the elastic belt is adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of vacuum packaging machines, and in particular to an adaptive air pressure regulating vacuum packaging machine. Background Art

[0002] A vacuum packaging machine is a device that uses vacuum sealing technology to encapsulate food in an oxygen-free state. Compared with traditional packaging methods, a vacuum packaging machine can extend the shelf life of food.

[0003] When packaging cooked food with a vacuum packaging machine, for example, chicken feet, the bones of chicken feet are relatively hard and can withstand a greater vacuum air pressure, while softer cooked food will deform when the negative pressure air pressure is too large. Therefore, it is necessary to adjust the negative pressure air pressure according to the hardness of the cooked food. When the vacuum packaging machine in the prior art vacuums and packages multiple foods, the duration of vacuum suction cannot be adjusted according to the quantity of the foods. After the air in the food packaging bag is completely evacuated, the vacuum packaging machine will still maintain the vacuum suction state, resulting in a large energy consumption of the vacuum packaging machine, and the deformation of softer cooked food will be more serious. Summary of the Invention

[0004] In order to overcome the disadvantages in the prior art, the technical problem of the present invention is: to provide an adaptive air pressure regulating vacuum packaging machine.

[0005] The technical implementation solution of the present invention is: an adaptive air pressure regulating vacuum packaging machine, including a machine case; A sealing cover, which is hinged to the machine case; An adaptive mechanism, which is arranged in the machine case. The adaptive mechanism includes: A vacuum tube, which is fixedly installed in the machine case; An adjusting tube, the two ends of which are respectively communicated with the vacuum tube and a vacuum pump in the machine case; A movable disk, which is slidably installed in the adjusting tube in the front-rear direction; An adjusting shaft, which rotatably penetrates through the adjusting tube; An elastic band, which is fixedly installed between the movable disk and the adjusting shaft. By twisting the elastic band, the pulling force on the movable disk can be changed; An electronic switch, which is installed in the adjusting tube and is used in cooperation with the movable disk; An adjusting component, which is arranged on the machine case and is connected to the adjusting shaft.

[0006] More preferably, it further includes a blocking block fixedly installed in the adjusting tube, and the blocking block is used in cooperation with the movable disk.

[0007] More preferably, in order to improve the packaging efficiency of the vacuum packaging machine and reduce the energy consumption of the vacuum packaging machine, an exhaust mechanism for assisting in exhausting the air in the packaging bag is provided inside the chassis.

[0008] More preferably, the exhaust mechanism includes a plurality of placement plates fixedly installed inside the chassis, a plurality of guide frames fixedly installed on the sealing cover, first sliders symmetrically sleeved and slidably installed on the guide frames in the left-right direction, an elastic swing rod elastically hinged to the sealing cover on one side of the first slider, a roller rotatably installed at the bottom end of the elastic swing rod for cooperating with the placement plate, a collar slidably sleeved on the elastic swing rod, a tension spring rotatably arranged between the collar and the first slider, and a guide rail fixedly installed on the sealing cover on one side of the elastic swing rod, and the collar is slidably clamped into the guide rail.

[0009] More preferably, the exhaust mechanism further includes a U-shaped rod slidably installed through the first slider, a card slot matching the U-shaped rod is provided on the guide frame, a contact plate is fixedly installed at one end of the U-shaped rod, and a compression spring is arranged between the contact plate and the first slider.

[0010] More preferably, the exhaust mechanism further includes a second slider, a pair of guide grooves are provided on the placement plate, and the second slider elastically slidably installed in the guide grooves for cooperating with the contact plate.

[0011] More preferably, the exhaust mechanism further includes a plug rod fixedly installed on the first slider, and a U-shaped sleeve matching the plug rod is fixedly installed on the second slider.

[0012] More preferably, it further includes a blocking block, a T-shaped groove is formed on the placement plate, the blocking block is slidably installed in the T-shaped groove, and a plurality of through holes corresponding to the plurality of placement plates and matching the blocking block are provided on the vacuum tube.

[0013] More preferably, it further includes a pressing block, the pressing block is fixedly installed on one side of the blocking block, and an elastic wedge block for cooperating with the pressing block is slidably installed in the T-shaped groove.

[0014] More preferably, sealing strips are symmetrically and fixedly installed inside the sealing cover.

[0015] Compared with the prior art, the present invention has the following advantages: 1. Through the design of the adaptive mechanism, when vacuum-packaging cooked food, by rotating the adjusting shaft, the elastic band can be twisted, thereby adjusting the elasticity of the elastic band, so as to facilitate the vacuum packaging of cooked food with different hardnesses. When the internal vacuum degree of all packaging bags meets the packaging requirements, the movable plate can squeeze the electronic switch under the action of negative pressure to turn off the vacuum pump. Thus, the purpose of the vacuum packaging machine for adaptive air pressure adjustment can be achieved, which can not only ensure the same vacuum degree for each packaging bag, but also effectively reduce the energy consumption of the vacuum pump.

[0016] 2. Through the design of the exhaust mechanism, when performing vacuum packaging, part of the air in the packaging bag can be discharged first, thereby shortening the vacuum packaging time. Through the design of the blocking block, the negative pressure air volume of the vacuum packaging machine can be adaptively adjusted according to the number of packaging bags, further reducing the energy consumption of the vacuum packaging machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall mechanism of the present invention; Figure 2 is a schematic diagram of the structure of the adaptive mechanism of the present invention; Figure 3 is a schematic diagram of the structure of the exhaust mechanism of the present invention; Figure 4 is a schematic diagram of the installation at the collar of the present invention; Figure 5 is a schematic diagram of the installation at the U-shaped rod of the present invention; Figure 6 is a schematic diagram of the installation at the contact plate of the present invention; Figure 7 is a schematic diagram of the installation at the second slider of the present invention; Figure 8 is a schematic diagram of the installation at the U-shaped sleeve of the present invention; Figure 9 is a schematic diagram of the installation at the elastic wedge block of the present invention; Figure 10 is a schematic diagram of the installation at the sealing strip of the present invention.

[0018] Among them, the above-mentioned drawings include the following reference numerals: 1, chassis; 101, sealing cover; 201, vacuum tube; 202, adjusting tube; 203, movable plate; 204, adjusting shaft; 205, elastic band; 206, electronic switch; 207, adjusting assembly; 301, blocking block; 401, placing plate; 402, guiding frame; 403, first slider; 404, elastic swing rod; 405, collar; 406, guide rail; 501, U-shaped rod; 502, contact plate; 601, second slider; 701, inserting rod; 702, U-shaped sleeve; 801, blocking block; 901, extrusion block; 902, elastic wedge block; 1001, sealing strip. Detailed implementation mode

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment 1 An adaptive air pressure regulating vacuum packaging machine, as Figures 1 - 3 shown, includes a machine case 1, a sealing cover 101 is hinged on the machine case 1, an adaptive mechanism is arranged in the machine case 1, the adaptive mechanism includes a vacuum tube 201 fixedly installed in the machine case 1 in an embedded manner, and an adjusting tube 202 is communicated between the vacuum tube 201 and a vacuum pump in the machine case 1 (the vacuum pump is a prior art and is not shown in the figure and will not be elaborated here). A movable disk 203 is slidably installed on the inner wall of the adjusting tube 202 in the front-rear direction, an adjusting shaft 204 is rotatably installed through the front end of the adjusting tube 202, a pointer is arranged on the outer wall of the adjusting shaft 204, a scale is arranged at the front end of the adjusting tube 202, and an elastic band 205 is fixedly installed between the movable disk 203 and the adjusting shaft 204. The elastic band 205 is in a wide and flat shape, and the pulling force on the movable disk 203 can be changed by twisting the elastic band 205. An electronic switch 206 used in cooperation with the movable disk 203 is installed in the adjusting tube 202, and an adjusting assembly 207 is arranged on the machine case 1. The adjusting assembly 207 is composed of a worm gear, a worm and a hand wheel. Among them, the worm gear is fixedly installed at the front end of the adjusting shaft 204, the worm is rotatably installed on the left side of the machine case 1 and meshes with the worm gear, and the hand wheel is fixedly installed at the left end of the worm.

[0021] As Figure 2 shown, it further includes a blocking block 301 fixedly installed in the adjusting tube 202. The blocking block 301 is used in cooperation with the movable disk 203, and the blocking block 301 is used to control the gap between the movable disk 203 and the electronic switch 206.

[0022] Initially, the elastic band 205 is in a flat state, and the elasticity of the elastic band 205 is in the minimum state, which is suitable for vacuum packaging of relatively soft cooked food. At this time, the vacuum pump in the chassis 1 is started. The vacuum pump generates negative pressure in the vacuum tube 201 through the regulating tube 202. The vacuum tube 201 pumps out the air in the packaging bag. At this time, the movable disk 203 is not affected by the negative pressure. When the packaging bag forms a vacuum state, the movable disk 203 slides toward the side close to the electronic switch 206 under the action of the negative pressure, and the elastic band 205 is stretched by the force until the movable disk 203 presses on the electronic switch 206. After the electronic switch 206 is stressed, it closes the vacuum pump, so that the vacuum tube 201 no longer generates negative pressure, and the packaging bag is no longer affected by the negative pressure. The pressure on the cooked food is small, and the cooked food will not deform.

[0023] When vacuum-packaging relatively hard cooked food, taking chicken feet as an example, the shape of the chicken feet is irregular and a greater negative pressure is required to make the packaging bag fully fit the chicken feet. At this time, the staff rotates the handwheel in the adjustment assembly 207. The handwheel drives the worm to rotate, and the worm gear drives the adjustment shaft 204 to rotate under the action of the worm. The staff judges the rotation angle of the adjustment shaft 204 by observing the pointer on the adjustment shaft 204 and the scale on the adjustment tube 202. The elastic band 205 twists under the action of the adjustment shaft 204, and the blocking block 301 blocks the movable disk 203 to prevent the movable disk 203 from sliding toward the side close to the adjustment shaft 204 after the elastic band 205 twists, resulting in an increase in the travel of the movable disk 203 moving toward the electronic switch 206 and an increase in the energy consumption of the vacuum packaging machine. After the elastic band 205 twists, the elastic force of the elastic band 205 will increase. At this time, repeat the above steps to pump out the air in the packaging bag. When the packaging bag is initially attached to the outer surface of the chicken feet, the negative pressure in the adjustment tube 202 is sufficient to make the movable disk 203 slide in the flat state of the elastic band 205. The vacuum tube 201 continues to pump out the air in the packaging bag. Since the elastic force of the elastic band 205 increases after twisting, the pulling force exerted by the elastic band 205 on the movable disk 203 is greater than the force exerted by the negative pressure in the adjustment tube 202 on the movable disk 203 at this time, and the movable disk 203 will not slide, making the packaging bag further adhere to the chicken feet under the action of the negative pressure until the vacuum degree in the packaging bag meets the packaging requirements. At this time, the force exerted by the negative pressure in the adjustment tube 202 on the movable disk 203 is greater than the pulling force exerted by the elastic band 205 on the movable disk 203, and the movable disk 203 slides toward the side close to the electronic switch 206 under the action of the negative pressure, and the elastic band 205 is stretched until the movable disk 203 presses on the electronic switch 206. After the electronic switch 206 is stressed, it closes the vacuum pump, thereby realizing the adjustment of the negative pressure of the vacuum packaging machine according to the hardness of different foods. When vacuum-packaging multiple packaging bags at the same time, repeat the above steps until the vacuum degrees in all packaging bags are the same and meet the packaging requirements, and then the movable disk 203 will slide under the action of the negative pressure, and then the vacuum pump will be closed. In this way, the purpose of adaptive air pressure adjustment of the vacuum packaging machine can be achieved, which can not only ensure that the vacuum degrees of each packaging bag are the same, but also prevent the relatively soft cooked food from being deformed due to excessive pressure.

[0024] Such as Figures 3 - 5As shown, in order to improve the packaging efficiency of the vacuum packaging machine and reduce the energy consumption of the vacuum packaging machine, an exhaust mechanism for assisting in exhausting the air in the packaging bag is provided in the chassis 1, and the exhaust mechanism includes three placement plates 401 fixedly installed in the chassis 1, and three guide frames 402 are fixedly installed on the sealing cover 101. The three guide frames 402 are arranged corresponding to the three placement plates 401, and the guide frames 402 are symmetrically slidably sleeved along the left and right directions. The two first sliders 403 are each provided with an elastic rocker 404 elastically hinged to the sealing cover 101 on the side away from each other, and a roller used in conjunction with the placement plate 401 is rotatably installed on the bottom end of the elastic rocker 404, and a ring 405 is slidably sleeved on the elastic rocker 404, and a tension spring is rotatably provided between the ring 405 and the first slider 403, and a guide rail 406 fixedly installed on the sealing cover 101 is provided on the side of the elastic rocker 404 away from the first slider 403, and the ring 405 slides and snaps into the guide rail 406.

[0025] like Figure 5 and Figure 6 As shown, the exhaust mechanism also includes a U-shaped rod 501 that is slidably installed on the first slider 403, and the guide frame 402 has a pair of slots that match the U-shaped rod 501. The bottom end of the U-shaped rod 501 is fixedly installed with a contact plate 502 that has friction with the packaging bag, and a compression spring is arranged between the contact plate 502 and the first slider 403.

[0026] like Figure 7 and Figure 8 As shown, the exhaust mechanism also includes a second slider 601. The placement plate 401 has a pair of guide grooves. The second slider 601 used in conjunction with the contact plate 502 is elastically installed in the guide groove for sliding along the left and right directions. There is friction between the second slider 601 and the packaging bag.

[0027] like Figure 6 and Figure 8 As shown, the exhaust mechanism further includes an insertion rod 701 fixedly mounted on the first slider 403 . The insertion rod 701 is located on a side away from each other of the two first sliders 403 . A U-shaped sleeve 702 matching the insertion rod 701 is fixedly mounted on the second slider 601 .

[0028] Initially, the tension spring between the first slider 403 and the ring 405 is in a contracted state, and the U-shaped rod 501 is stuck in the corresponding slot on the guide frame 402, so that the first slider 403 cannot slide on the guide frame 402. Before vacuum packaging, the packaging bag is placed on the placement plate 401, and the opening of the packaging bag is between the vacuum tube 201 and the placement plate 401. The left and right edges of the packaging bag are both located on the corresponding second sliders 601. Since the material of the packaging bag is relatively hard, the packaging bag will be stretched open by the cooked food, and its opening The packaging bag is in an open state with a large opening. There is a lot of air in the packaging bag. At this time, the sealing cover 101 is rotated downward, and then the roller at the bottom end of the elastic swing rod 404 contacts the top of the corresponding placement plate 401. The roller is forced to drive the elastic swing rod 404 to rotate upward, and the elastic swing rod 404 drives the ring 405 thereon to move. The ring 405 slides along the guide rail 406 and along the outer wall of the elastic swing rod 404. The tension spring between the first slider 403 and the ring 405 is stretched under force, and then the contact plate 502 contacts the packaging bag. The contact plate 502 presses the packaging bag downward, so that the inner wall of the packaging bag opening is partially fitted, and some of the air in the packaging bag is squeezed out. At the same time, the insertion rod 701 on the first slider 403 is inserted into the corresponding U-shaped sleeve 702. At this time, the second slider 601 provides support for the contact plate 502 across the packaging bag. The contact plate 502 is forced to move toward the side close to the first slider 403, and drives the U-shaped rod 501 to slide along the first slider 403. The compression spring is forced to shrink, and then the contact plate 502 is against the first slider 403, and the U-shaped rod 501 is pressed against the first slider 403. 1 is disengaged from the slot of the guide frame 402, the tension spring contracts and drives the first slider 403 to slide, the first slider 403 drives the contact plate 502 to slide through the U-shaped rod 501, and drives the corresponding second slider 601 to elastically contract and slide through the insertion rod 701 and the U-shaped sleeve 702. The opening of the packaging bag is flattened by the friction between the contact plate 502 and the second slider 601, and more air in the packaging bag is squeezed out. As a result, most of the gas in the packaging bag can be discharged in advance, thereby shortening the vacuum packaging time and reducing the energy consumption of the vacuum pump.

[0029] like Figure 7 and Figure 9 As shown, a blocking block 801 is also included. A T-shaped slot is provided on the top rear side of the placement plate 401. The blocking block 801 is slidably installed in the T-shaped slot along the front-to-back direction. The vacuum tube 201 has three through holes corresponding to the three placement plates 401 and matching the blocking block 801.

[0030] like Figure 7 and Figure 9 As shown, it also includes an extrusion block 901. The extrusion block 901 is fixedly installed on the right side of the blocking block 801. An elastic wedge block 902 is slidably installed in the T-shaped groove for use with the extrusion block 901. The elastic wedge block 902 can limit the blocking block 801 through the extrusion block 901.

[0031] As Figure 10 shown, sealing strips 1001 are symmetrically and fixedly installed inside the sealing cover 101. When the sealing cover 101 fits against the top of the chassis 1, the space between the chassis 1, the sealing cover 101 and the three placing plates 401 can be isolated into three independent sealed spaces through the sealing strips 1001.

[0032] Initially, there is a gap between the plugging block 801 and the through hole of the vacuum tube 201, and the pressing block 901 contacts the front inclined surface of the corresponding elastic wedge block 902. When vacuum packaging three packaging bags simultaneously, the three packaging bags can be respectively placed on the three placing plates 401. When vacuum packaging two or one packaging bag, the plugging block 801 on the idle placing plate 401 is pushed backward. The plugging block 801 drives the pressing block 901 to move backward. The pressing block 901 squeezes the elastic wedge block 902. The elastic wedge block 902 contracts and slides under the force until the pressing block 901 crosses the front inclined surface of the elastic wedge block 902 and contacts its rear inclined surface. Release the plugging block 801. The elastic wedge block 902 releases and slides upward to reset, and drives the plugging block 801 to continue sliding backward by squeezing the pressing block 901. Subsequently, the plugging block 801 plugs the corresponding through hole on the vacuum tube 201. Then, the sealing cover 101 is rotated downward. The sealing cover 101 drives the two sealing strips 1001 thereon to fit against the top of the chassis 1. The two sealing strips 1001 isolate the space between the chassis 1, the sealing cover 101 and the three placing plates 401 into three independent sealed spaces. At this time, vacuum packaging is performed on the packaging bag. The unblocked through hole on the vacuum tube 201 sucks the air in the packaging bag, and no negative pressure will be generated in the independent sealed space corresponding to the blocked through hole. When the packaging bag forms a vacuum state, the movable disk 203 will slide under the action of the negative pressure, and the above steps are repeated to turn off the vacuum pump. Thus, it can be realized to adaptively adjust the negative pressure air volume of the vacuum packaging machine according to the number of packaging bags, and further reduce the energy consumption of the vacuum packaging machine.

[0033] While the movable disk 203 presses the electronic switch 206, the packaging bag is heat-sealed by the heat-sealing assembly (the heat-sealing assembly is a prior art and will not be described herein). Then, the sealing cover 101 is rotated upward. The elastic swing rod 404 gradually elastically releases and rotates back to its original position as the sealing cover 101 moves, and drives the collar 405 to slide back along the guide rail 406. The collar 405 drives the first slider 403 to slide back along the guide frame 402 through the tension spring. The first slider 403 drives the contact plate 502 to slide through the U-shaped rod 501. After the U-shaped rod 501 slides, it aligns with the card slot on the guide frame 402. The compression spring releases to drive the contact plate 502 to reset. The contact plate 502 drives the U-shaped rod 501 to snap into the card slot of the guide frame 402 to complete the reset. At the same time, the first slider 403 drives the second slider 601 to elastically slide back through the inserting rod 701. The inserting rod 701 disengages from the corresponding U-shaped sleeve 702. Then, the cooked food that has completed vacuum packaging is taken out, and the next vacuum packaging can be carried out.

[0034] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An adaptive air pressure regulating vacuum packaging machine, characterized in that: Including a chassis (1); A sealing cover (101), which is hinged to the chassis (1); An adaptive mechanism, which is arranged inside the chassis (1), and the adaptive mechanism includes: A vacuum tube (201), which is fixedly installed inside the chassis (1); An adjustment tube (202), with both ends of the adjustment tube (202) communicating with the vacuum tube (201) and a vacuum pump inside the chassis (1) respectively; A movable disk (203), which is slidably installed inside the adjustment tube (202) in the front-back direction; An adjustment shaft (204), which rotatably penetrates through the adjustment tube (202); An elastic band (205), which is fixedly installed between the movable disk (203) and the adjustment shaft (204), and by twisting the elastic band (205), the pulling force on the movable disk (203) can be changed; An electronic switch (206), which is installed inside the adjustment tube (202) and is used in cooperation with the movable disk (203); An adjustment component (207), which is arranged on the chassis (1) and is connected to the adjustment shaft (204).

2. The adaptive air pressure regulating vacuum packaging machine according to claim 1, wherein: It also includes a blocking block (301) fixedly installed inside the adjustment tube (202), and the blocking block (301) is used in cooperation with the movable disk (203).

3. An adaptive air pressure regulating vacuum packaging machine according to claim 1, wherein: In order to improve the packaging efficiency of the vacuum packaging machine and reduce the energy consumption of the vacuum packaging machine, an exhaust mechanism for assisting in exhausting the air inside the packaging bag is arranged inside the chassis (1).

4. An adaptive air pressure regulating vacuum packaging machine according to claim 3, wherein: The exhaust mechanism includes a plurality of placement plates (401) fixedly installed inside the chassis (1), a plurality of guide frames (402) fixedly installed on the sealing cover (101), first sliders (403) symmetrically and slidably sleeved on the guide frames (402) in the left-right direction, an elastic swing rod (404) elastically hinged to the sealing cover (101) on one side of the first slider (403), a roller rotatably installed at the bottom end of the elastic swing rod (404) and used in cooperation with the placement plate (401), a collar (405) slidably sleeved on the elastic swing rod (404), a tension spring rotatably arranged between the collar (405) and the first slider (403), a guide rail (406) fixedly installed on the sealing cover (101) on one side of the elastic swing rod (4), and the collar (405) is slidably clamped into the guide rail (406).

5. An adaptive air pressure regulating vacuum packaging machine according to claim 4, characterized in that: The exhaust mechanism also includes a U-shaped rod (501) slidably penetrating through the first slider (403), the guide frame (402) has a slot matching the U-shaped rod (501), a contact plate (502) is fixedly installed at one end of the U-shaped rod (501), and a compression spring is arranged between the contact plate (502) and the first slider (403).

6. The adaptive air pressure regulating vacuum packaging machine according to claim 5, wherein: The exhaust mechanism further includes a second slider (601). A pair of guide grooves are provided on the placement plate (401), and the second slider (601) that cooperates with the contact plate (502) is elastically and slidably installed in the guide grooves.

7. An adaptive air pressure regulating vacuum packaging machine according to claim 6, characterized in that: The exhaust mechanism further includes a plug rod (701) fixedly installed on the first slider (403), and a U-shaped sleeve (702) that matches the plug rod (701) is fixedly installed on the second slider (601).

8. An adaptive air pressure regulating vacuum packaging machine according to claim 4, characterized in that: It further includes a plugging block (801). A T-shaped groove is formed on the placement plate (401), and the plugging block (801) is slidably installed in the T-shaped groove. The vacuum tube (201) has a plurality of through holes corresponding to the plurality of placement plates (401) and matching the plugging block (801).

9. An adaptive air pressure regulating vacuum packaging machine according to claim 8, characterized in that: It further includes a pressing block (901). The pressing block (901) is fixedly installed on one side of the plugging block (801), and an elastic wedge block (902) that cooperates with the pressing block (901) is slidably installed in the T-shaped groove.

10. An adaptive air pressure regulating vacuum packaging machine according to claim 4, characterized in that: Sealing strips (1001) are symmetrically and fixedly installed in the sealing cover (101).

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