Dual-mode vacuum sealing machine

Abstract

The utility model discloses a dual-mode vacuum sealing machine which comprises a machine shell and a control device, a vacuumizing cavity is formed in the machine shell, a sealing ring arranged in a closed-loop mode is arranged at the position of an opening of the vacuumizing cavity, a heat sealing strip used for heat sealing of a bag opening is arranged on the outer side of the sealing ring, and an air nozzle connecting base movably arranged in the front-back direction is arranged in the machine shell. The air nozzle connecting seat is connected with a telescopic driving device, the telescopic driving device is electrically connected with a control device, the rear end part of the telescopic air nozzle is connected to the air nozzle connecting seat and is matched with the air nozzle connecting seat in a front-and-back telescopic movement manner, the interior of the telescopic air nozzle is hollowed out and forms a vacuumizing air passage, and the vacuumizing air passage penetrates to the outer end part of the telescopic air nozzle; at least one side of the middle part of the telescopic air nozzle is provided with a side air port which is communicated with the vacuumizing air channel. Compared with the prior art, vacuum packaging treatment of different types of packaging bags is switched by controlling the telescopic stroke of the telescopic air nozzle with the vacuumizing air channel, and one machine with two modes is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum sealing machines, in particular to a double-mode vacuum sealing machine. Background Art

[0002] In daily life, we often use vacuum sealers to pack food to prevent food from oxidation and deterioration and extend the shelf life of food. The vacuum sealers in the prior art generally need to be used with rough noodle bags, because the surface of the rough noodle bags is provided with concave and convex patterns, and the bag mouth extends into the vacuum chamber of the vacuum sealer. The air in the rough noodle bag can be drawn out through the gap formed between the two sides of the pattern. However, when the rough noodle bags are vacuum packed, the presence of the concave and convex patterns also makes it easy for the heat seal to leak; and when the smooth bags are used for vacuum packing, the two sides of the bag are squeezed, and the air is difficult to flow out, resulting in vacuum failure.

[0003] At present, ordinary vacuum pumps can only vacuum bags of the same type, and cannot vacuum both smooth bags and rough bags at the same time. They have a single function, so it is necessary to improve them. Utility Model Content

[0004] In view of the shortcomings of the prior art, the purpose of the utility model is to provide a dual-mode vacuum sealing machine to solve the problem of the single storage bag of the existing vacuum sealing machine and realize vacuum packaging without bag selection on the same machine.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the utility model is: a dual-mode vacuum sealing machine, including a casing and a control device, a vacuum chamber is arranged inside the casing, a sealing ring arranged in a closed loop is arranged at the opening of the vacuum chamber, a heat sealing strip for heat-sealing the bag opening is arranged on the outer side of the sealing ring, an air nozzle connecting seat movably arranged in the front-back direction is arranged inside the casing, the air nozzle connecting seat is connected to a telescopic driving device, the telescopic driving device is electrically connected to the control device, the rear end of the telescopic air nozzle is connected to the air nozzle connecting seat, and cooperates with the front-back telescopic movement, wherein the interior of the telescopic air nozzle is hollowed out and forms a vacuum air duct, and the vacuum air duct runs through to the outer end of the telescopic air nozzle; a side air port is opened on at least one side of the middle part of the telescopic air nozzle, and the side air port is connected to the vacuum air duct, and the vacuum sealing machine has a mode and mode 2. When the vacuum sealing machine is in mode 1, the telescopic air nozzle is in a retracted state, the telescopic air nozzle is on the inner side of the vacuum chamber, and the vacuum air passage and the side air port are separated from the vacuum chamber, which is used for vacuum packaging of rough bags; when the vacuum sealing machine is in mode 2, the telescopic air nozzle is sequentially provided with a vacuum state and a heat sealing state. When the telescopic air nozzle is in the vacuum state, the telescopic air nozzle extends forward, and the front end of the telescopic air nozzle extends to the outside of the heat sealing strip, the side air port is on the inner side of the sealing ring, and is connected to the vacuum chamber, which is used for vacuum packaging of smooth bags; when the telescopic air nozzle is in the heat sealing state, the telescopic air nozzle retracts backward, and the front end of the telescopic air nozzle retracts to the inner side of the heat sealing strip, the side air port is on the inner side of the sealing ring, and remains connected to the vacuum chamber, which is used for heat packaging of smooth bags.

[0006] In a further technical solution, the telescopic drive device includes a telescopic movable seat, an air nozzle drive seat, an air nozzle drive screw and an air nozzle drive motor. The air nozzle drive seat is fixed to the casing, and the interior of the air nozzle drive seat is hollowed out to form a drive slide groove extending in a straight line; the telescopic movable seat is slidably assembled in the drive slide groove, the telescopic movable seat is provided with an internal threaded hole running through the front and back, and the air nozzle connecting seat is assembled on the telescopic movable seat; the air nozzle drive screw is rotatably installed in the interior of the drive slide groove, and is threadedly connected to the internal threaded hole of the telescopic movable seat, and the end of the air nozzle drive screw is coaxially assembled with a first transmission gear; the air nozzle drive motor is fixed to the casing and is located on one side of the air nozzle drive seat, the air nozzle drive motor is electrically connected to the control device, and the output shaft of the air nozzle drive motor is connected to the second transmission gear, and the second transmission gear is meshed and connected to the first transmission gear.

[0007] In a further technical solution, the control device includes a PCB board, which is located on one side of the air nozzle drive seat. The PCB board is electrically connected to the air nozzle drive motor. Position switch 1, position switch 2 and position switch 3 are provided on the side of the PCB board close to the air nozzle drive seat. Position switch 1, position switch 2 and position switch 3 are arranged at intervals along the extension direction of the driving slide groove, and the telescopic movable seat is triggered and coordinated with position switch 1, position switch 2 and position switch 3 respectively.

[0008] In a further technical solution, a trigger cross arm is formed on one side of the telescopic movable seat close to the PCB board, the trigger cross arm is laterally protruding, a trigger part is provided at the end of the trigger cross arm, and the trigger part is bent downward; position switch 1, position switch 2 and position switch 3 respectively use U-shaped photoelectric switches of the same model, the U-shaped photoelectric switch includes a transmitting end and a receiving end, a trigger area is formed between the transmitting end and the receiving end, and the movement trajectory of the trigger part passes through the trigger area of ​​each U-shaped photoelectric switch respectively, and cooperates with it for triggering.

[0009] In a further technical solution, the spacing distance between position switch one and position switch two is not greater than the width of the vacuum chamber, and when the trigger part is in the trigger area of ​​position switch one and position switch two, respectively, the side air ports are respectively in the inner ring of the sealing ring, and close to the front side section and the rear side section of the sealing ring; when the trigger part is in the trigger area of ​​position switch three, the telescopic air nozzle is in a retracted state and is completely separated from the sealing ring.

[0010] In a further technical solution, the telescopic movable seat is provided with an assembly part, and a connecting side plate is respectively provided on both sides of the assembly part, and the two connecting side plates are respectively provided with an axial hole; symmetrically arranged connecting shaft rods are respectively formed on both sides of the air nozzle connecting seat, and the two shaft rods on both sides are respectively movably inserted into the corresponding axial holes, and the air nozzle connecting seat is rotatably arranged around its connecting shaft rod, and the casing or the air nozzle driving seat is provided with an elastic part, and the elastic part is connected to the telescopic air nozzle or the air nozzle connecting seat, so that the telescopic air nozzle is tilted upward and lifted under normal conditions to avoid collision between the moving telescopic air nozzle and the sealing ring.

[0011] In a further technical solution, a coil spring is fixed on one side of the air nozzle driving seat, and an elastic strip is extended on one side of the coil spring. The elastic strip movably contacts the bottom of the telescopic air nozzle, so that the telescopic air nozzle has an upward movement tendency.

[0012] In a further technical solution, the cross-sectional shape of the shaft hole is a runway shape, the shaft hole is extended in the up and down directions, the connecting shaft rod is movably assembled in the shaft hole and movably cooperates in the up and down directions.

[0013] In a further technical solution, a mounting notch is provided on the top of one of the shaft holes, the width of the mounting notch is slightly smaller than the diameter of the connecting shaft rod, and the connecting shaft rod is clamped in the shaft hole through the mounting notch.

[0014] After adopting the above structure, the advantages of the utility model compared with the prior art are as follows: the utility model uses an auxiliary vacuum pumping structure of a telescopic air nozzle with a vacuum air duct. When the equipment performs smooth bag vacuum packaging and packaging, the telescopic stroke of the telescopic air nozzle is controlled to switch to different states and modes. The structure is simple and the design is ingenious, and vacuum packaging processing without bag selection is realized. The preparation cost is low and it is easy to promote; the telescopic stroke of the telescopic air nozzle is controlled by position switch one, position switch two and position switch three, and the positioning accuracy is high, and the stroke positioning of the telescopic air nozzle in each state can be accurately controlled; the telescopic air nozzle is driven by the air nozzle driving screw to perform telescopic movement, with high stability and low error, which can further improve the stability of the equipment; the telescopic air nozzle with elastic lifting arrangement can reduce the failure of mode switching caused by the telescopic air nozzle hitting the sealing ring during the extension process; the runway-shaped axial hole enables the telescopic air nozzle to have floating space in the up and down directions, and the airtightness of the vacuum chamber is guaranteed when the whole machine is closed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 It is a cross-sectional schematic diagram of the utility model.

[0017] Figure 2 This is an operation diagram of the vacuum sealer of the utility model when it is in mode 2.

[0018] Figure 3 This is an operating diagram of the vacuum sealer of the utility model when it is in mode one.

[0019] Figure 4 It is a structural schematic diagram of the telescopic drive device in the utility model.

[0020] Figure 5 It is an exploded view of the telescopic drive device in the utility model.

[0021] Figure 6 It is a working schematic diagram of the telescopic air nozzle in the utility model. DETAILED DESCRIPTION

[0022] The following are only preferred embodiments of the present invention, and do not limit the protection scope of the present invention.

[0023] like Figures 1 to 3As shown, a dual-mode vacuum sealing machine comprises a casing 1 and a control device, wherein a vacuum chamber 10 is provided inside the casing 1, a sealing ring 11 arranged in a closed loop is provided at the opening of the vacuum chamber 10, and a heat sealing strip 12 for heat-sealing the bag opening is provided on the outer side of the sealing ring 11, characterized in that: an air nozzle connecting seat 21 movably arranged in the front-to-back direction is provided inside the casing 1, the air nozzle connecting seat 21 is connected to a telescopic driving device 3, the telescopic driving device 3 is electrically connected to the control device, the rear end of the telescopic air nozzle 2 is connected to the air nozzle connecting seat 21, and cooperates in telescopic movement forward and backward, wherein the interior of the telescopic air nozzle 2 is hollowed out and forms a vacuum air passage, and the vacuum air passage runs through to the outer end of the telescopic air nozzle 2; a side air port 20 is provided on at least one side of the middle part of the telescopic air nozzle 2, and the side air port 20 is connected to the vacuum air passage, and the vacuum sealing machine has mode one and mode two. When the vacuum sealer is When the vacuum sealing machine is in mode 1, the telescopic air nozzle 2 is in a retracted state, the telescopic air nozzle 2 is on the inner side of the vacuum chamber 10, and the vacuum air passage and the side air port 20 are both separated from the vacuum chamber 10, which is used for vacuum packaging of rough bags; when the vacuum sealing machine is in mode 2, the telescopic air nozzle 2 is sequentially provided with a vacuum state and a heat sealing state. When the telescopic air nozzle 2 is in the vacuum state, the telescopic air nozzle 2 extends forward, and the front end of the telescopic air nozzle 2 extends to the outside of the heat sealing strip 12, the side air port 20 is on the inner side of the sealing ring 11, and is connected to the vacuum chamber 10, which is used for vacuum packaging of smooth bags; when the telescopic air nozzle 2 is in the heat sealing state, the telescopic air nozzle 2 retracts backward, and the front end of the telescopic air nozzle 2 retracts to the inner side of the heat sealing strip 12, the side air port 20 is on the inner side of the sealing ring 11, and remains connected to the vacuum chamber 10, which is used for heat packaging of smooth bags.

[0024] Driven by the telescopic driving device 3, the telescopic air nozzle 2 performs telescopic movement in the front-to-back direction, wherein mode one is the rough noodle bag mode, which is also the default mode, and the telescopic air nozzle 2 remains separated from the sealing ring 11 and the vacuum chamber 10. Mode one is used for vacuum packaging of the rough noodle bag, and the telescopic air nozzle 2 does not need to be involved in its operation.

[0025] Mode 2 is the smooth bag mode, in which the telescopic air nozzle 2 is first extended to the outside of the heat sealing strip 12. At this time, the equipment is in a vacuum state of the smooth bag. After the vacuuming process is completed, the telescopic air nozzle 2 is retracted for a certain distance until the telescopic air nozzle 2 is retracted to a position within the heat sealing strip 12, and the vacuuming is continued. After maintaining the pressure, the smooth bag is heat-sealed to complete the vacuum packaging of the smooth bag.

[0026] By controlling the telescopic stroke of the telescopic air nozzle 2 to switch to different states and modes, the structure is simple and the design is ingenious, and vacuum packaging processing without bag selection is realized. The preparation cost is low and it is easy to promote.

[0027] Specifically, Figure 4As shown, the telescopic driving device 3 includes a telescopic movable seat 31, an air nozzle driving seat 30, an air nozzle driving screw 32 and an air nozzle driving motor 35. The air nozzle driving seat 30 is fixed to the casing 1, and the interior of the air nozzle driving seat 30 is hollowed out to form a driving slide groove 301 extending in a straight line; the telescopic movable seat 31 is slidably assembled in the driving slide groove 301, the telescopic movable seat 31 is provided with an internal threaded hole running through the front and back, and the air nozzle connecting seat 21 is assembled on the telescopic movable seat 31; the air nozzle driving screw 32 is rotatably installed in the interior of the driving slide groove 301, and is threadedly connected to the internal threaded hole of the telescopic movable seat 31, and the end of the air nozzle driving screw 32 is coaxially assembled with a first transmission gear 33; the air nozzle driving motor 35 is fixed to the casing 1 and is located on one side of the air nozzle driving seat 30, the air nozzle driving motor 35 is electrically connected to the control device, and the output shaft of the air nozzle driving motor 35 is connected to the second transmission gear 34, and the second transmission gear 34 is meshed and connected to the first transmission gear 33.

[0028] Specifically, the control device includes a PCB board 36, which is located on one side of the air nozzle drive seat 30. The PCB board 36 is electrically connected to the air nozzle drive motor 35. A position switch 1 361, a position switch 2 362 and a position switch 3 363 are provided on the side of the PCB board 36 close to the air nozzle drive seat 30. The position switch 1 361, the position switch 2 362 and the position switch 3 363 are spaced apart along the extension direction of the driving slide groove 301, and the telescopic movable seat 31 is triggered and cooperated with the position switch 1 361, the position switch 2 362 and the position switch 3 363 respectively.

[0029] Specifically, a trigger cross arm 311 is formed on one side of the telescopic movable seat 31 close to the PCB board 36. The trigger cross arm 311 is arranged to protrude laterally. A trigger portion 312 is arranged at the end of the trigger cross arm 311, and the trigger portion 312 is arranged to be bent downward. Position switch 1 361, position switch 2 362 and position switch 3 363 respectively use U-shaped photoelectric switches of the same model. The U-shaped photoelectric switch includes a transmitting end and a receiving end. A trigger area is formed between the transmitting end and the receiving end. The movement trajectory of the trigger portion 312 passes through the trigger areas of each U-shaped photoelectric switch and cooperates with them for triggering.

[0030] Specifically, the spacing distance between position switch 1 361 and position switch 2 362 is no greater than the width of the vacuum chamber 10. When the trigger portion 312 is respectively in the triggering zone of position switch 1 361 and position switch 2 362, the side air port 20 is respectively in the inner ring of the sealing ring 11, and close to the front side section and the rear side section of the sealing ring 11; when the trigger portion 312 is in the triggering zone of position switch 3 363, the telescopic air nozzle 2 is in a retracted state and is completely separated from the sealing ring 11.

[0031] The telescopic stroke of the telescopic air nozzle 2 is controlled by position switch 1 361, position switch 2 362 and position switch 3 363, with high positioning accuracy, and can accurately control the stroke positioning of the telescopic air nozzle 2 in each state; the telescopic air nozzle 2 is driven by the air nozzle driving screw 32 to perform telescopic movement, with high stability and low error, which can further improve the stability of the equipment.

[0032] like Figure 5 As shown, the telescopic movable seat 31 is provided with an assembly part, and a connecting side plate is respectively provided on both sides of the assembly part, and the two connecting side plates are respectively provided with an axial hole 310; symmetrically arranged connecting shafts 211 are respectively formed on both sides of the air nozzle connecting seat 21, and the two shafts on both sides are respectively movably inserted into the corresponding axial holes 310, and the air nozzle connecting seat 21 is rotatably arranged around its connecting shaft 211, and the air nozzle driving seat 30 is provided with an elastic member, and the elastic member is connected to the telescopic air nozzle 2, so that the telescopic air nozzle 2 is tilted upward and lifted in the normal state to avoid the collision between the moving telescopic air nozzle 2 and the sealing ring 11.

[0033] Specifically, a coil spring 22 is fixed on one side of the air nozzle driving seat 30, and an elastic strip 221 is extended from one side of the coil spring 22. The elastic strip 221 movably contacts the bottom of the telescopic air nozzle 2, so that the telescopic air nozzle 2 has an upward movement tendency.

[0034] Specifically, the cross-sectional shape of the shaft hole 310 is a racetrack shape, and the shaft hole 310 is extended in the up-down direction. The connecting shaft rod 211 is movably assembled in the shaft hole 310 and movably cooperates in the up-down direction.

[0035] Specifically, a mounting notch is provided at the top of one of the shaft holes 310 , the width of which is slightly smaller than the diameter of the connecting shaft rod 211 , and the connecting shaft rod 211 is clamped in the shaft hole 310 through the mounting notch.

[0036] like Figure 6 As shown, the vacuum sealer in this embodiment further comprises an upper cover, which is provided with another sealing ring 11. When the upper cover is closed, the upper sealing ring 11 and the lower sealing ring 11 are pressed and connected to form an airtight vacuum chamber 10. Under the pressing action of the upper sealing ring 11 and the floating space provided by the racetrack-shaped shaft hole 310, the telescopic air nozzle 2 is pressed from an upwardly lifted inclined state to a horizontal state to maintain the airtightness of the vacuum chamber 10.

[0037] The elastically lifted telescopic air nozzle 2 can reduce the possibility that the telescopic air nozzle 2 hits the sealing ring 11 during the extension process, causing the failure of mode switching; the runway-shaped axial hole 310 allows the telescopic air nozzle 2 to have floating space in the up and down directions, ensuring the airtightness of the vacuum chamber 10 when the whole machine is closed.

[0038] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A dual-mode vacuum sealer, comprising a housing (1) and a control device, wherein a vacuum chamber (10) is provided inside the housing (1), a sealing ring (11) arranged in a closed loop is provided at the opening of the vacuum chamber (10), and a heat sealing strip (12) for heat-sealing a bag opening is provided outside the sealing ring (11), wherein: An air nozzle connection seat (21) movably arranged in the front-rear direction is provided inside the housing (1). The air nozzle connection seat (21) is connected to a telescopic drive device (3). The telescopic drive device (3) is electrically connected to a control device. The rear end of the telescopic air nozzle (2) is connected to the air nozzle connection seat (21) and performs telescopic movement in the front-rear direction. The interior of the telescopic air nozzle (2) is hollowed out to form a vacuum air passage, which extends to the outer end of the telescopic air nozzle (2); a side air port (20) is provided on at least one side of the middle portion of the telescopic air nozzle (2), and the side air port (20) is connected to the vacuum air passage. The vacuum sealer has a mode 1 and a mode 2. When the vacuum sealer is in the mode 1, the telescopic air nozzle (2) is in a retracted state, the telescopic air nozzle (2) is located inside the vacuum chamber (10), and the vacuum air passage and the side air port (20) are separated from the vacuum chamber (10), so as to be used for vacuum packaging of rough noodle bags; When the vacuum sealer is in mode 2, the telescopic air nozzle (2) is sequentially provided with a vacuuming state and a heat-sealing state. When the telescopic air nozzle (2) is in the vacuuming state, the telescopic air nozzle (2) extends forward, and the front end of the telescopic air nozzle (2) extends to the outside of the heat-sealing strip (12), and the side air port (20) is located inside the sealing ring (11) and connected to the vacuuming chamber (10), so as to be used for vacuuming the smooth bag; when the telescopic air nozzle (2) is in the heat-sealing state, the telescopic air nozzle (2) retracts backward, and the front end of the telescopic air nozzle (2) retracts to the inside of the heat-sealing strip (12), and the side air port (20) is located inside the sealing ring (11) and remains connected to the vacuuming chamber (10), so as to be used for heat-sealing the smooth bag.

2. A dual-mode vacuum sealer according to claim 1, characterized in that: The telescopic driving device (3) comprises a telescopic movable seat (31), an air nozzle driving seat (30), an air nozzle driving screw (32) and an air nozzle driving motor (35). The air nozzle driving seat (30) is fixed to the housing (1), and the interior of the air nozzle driving seat (30) is hollowed out to form a driving slide groove (301) extending in a straight line; The telescopic movable seat (31) is slidably assembled on the driving slide groove (301), the telescopic movable seat (31) is provided with an internal threaded hole penetrating front and rear, and the air nozzle connecting seat (21) is assembled on the telescopic movable seat (31); The air nozzle driving screw rod (32) is rotatably mounted inside the driving slide groove (301) and is threadedly connected to the internal threaded hole of the telescopic movable seat (31). The end of the air nozzle driving screw rod (32) is coaxially mounted with a first transmission gear (33); The air nozzle drive motor (35) is fixed to the housing (1) and is located on one side of the air nozzle drive seat (30). The air nozzle drive motor (35) is electrically connected to the control device. The output shaft of the air nozzle drive motor (35) is connected to the second transmission gear (34), and the second transmission gear (34) is meshedly connected to the first transmission gear (33).

3. A dual-mode vacuum sealer according to claim 2, characterized in that: The control device comprises a PCB board (36), the PCB board (36) is located on one side of the air nozzle drive seat (30), the PCB board (36) is electrically connected to the air nozzle drive motor (35), and a position switch 1 (361), a position switch 2 (362) and a position switch 3 (363) are provided on one side of the PCB board (36) close to the air nozzle drive seat (30), and the position switch 1 (361), the position switch 2 (362) and the position switch 3 (363) are arranged at intervals along the extension direction of the drive slide groove (301). The telescopic movable seat (31) is triggered and coordinated with position switch 1 (361), position switch 2 (362) and position switch 3 (363) respectively.

4. A dual-mode vacuum sealer according to claim 3, characterized in that: A trigger cross arm (311) is formed on one side of the telescopic movable seat (31) close to the PCB board (36), the trigger cross arm (311) is arranged to be laterally protruding, a trigger portion (312) is arranged at the end of the trigger cross arm (311), and the trigger portion (312) is arranged to be bent downward; The position switch 1 (361), the position switch 2 (362) and the position switch 3 (363) are respectively U-shaped photoelectric switches of the same model, and the U-shaped photoelectric switch includes a transmitting end and a receiving end, and a trigger area is formed between the transmitting end and the receiving end. The movement trajectory of the trigger part (312) passes through the trigger area of ​​each U-shaped photoelectric switch and cooperates with it for triggering.

5. A dual-mode vacuum sealer according to claim 4, characterized in that: The spacing distance between the position switch 1 (361) and the position switch 2 (362) is not greater than the width of the vacuum chamber (10); when the trigger portion (312) is respectively in the triggering zone of the position switch 1 (361) and the position switch 2 (362), the side air port (20) is respectively in the inner ring of the sealing ring (11) and close to the front side section and the rear side section of the sealing ring (11); when the trigger portion (312) is in the triggering zone of the position switch 3 (363), the telescopic air nozzle (2) is in a retracted state and is completely separated from the sealing ring (11).

6. A dual-mode vacuum sealer according to claim 2, characterized in that: The telescopic movable seat (31) is provided with an assembly portion, and a connecting side plate is respectively provided on both sides of the assembly portion, and the two connecting side plates are respectively provided with an axial hole (310); the two sides of the air nozzle connecting seat (21) are respectively formed with symmetrically arranged connecting shafts (211), and the two shafts on both sides are respectively movably inserted into the corresponding axial holes (310), and the air nozzle connecting seat (21) is rotatably arranged around its connecting shaft (211); the housing (1) or the air nozzle driving seat (30) is provided with an elastic member, and the elastic member is connected to the telescopic air nozzle (2) or the air nozzle connecting seat (21), so that the telescopic air nozzle (2) is tilted upward and lifted in a normal state, so as to avoid the moving telescopic air nozzle (2) from colliding with the sealing ring (11).

7. A dual-mode vacuum sealer according to claim 6, characterized in that: A coil spring (22) is fixedly provided on one side of the air nozzle driving seat (30), and an elastic pressure strip (221) is extended from one side of the coil spring (22). The elastic pressure strip (221) is movably contacted with the bottom of the telescopic air nozzle (2), so that the telescopic air nozzle (2) has an upward movement tendency.

8. A dual-mode vacuum sealer according to claim 7, characterized in that: The cross-sectional shape of the shaft hole (310) is a racetrack shape. The shaft hole (310) is extended in the up-down direction. The connecting shaft rod (211) is movably assembled in the shaft hole (310) and movably cooperates in the up-down direction.

9. A dual-mode vacuum sealer according to claim 8, characterized in that: A mounting notch is provided at the top of one of the shaft holes (310), the width of the mounting notch being slightly smaller than the diameter of the connecting shaft rod (211), and the connecting shaft rod (211) is clamped in the shaft hole (310) through the mounting notch.

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