Vacuum packaging machine

Abstract

The invention provides a vacuum packaging machine which comprises a bottom plate, a shell is arranged on the bottom plate, a sealing table is arranged on the bottom plate and located on the outer side of the shell, a pressing block is correspondingly arranged on the sealing table, a sealing assembly is arranged on the sealing table, a driving assembly connected with the pressing block is arranged in the shell, and the driving assembly drives the pressing block to rotate relative to the shell and can press the sealing table. A sealing cavity is formed between the sealing table and the pressing block, a plurality of air guide nozzle assemblies are arranged in the shell side by side, each air guide nozzle assembly comprises an air guide nozzle, and the air guide nozzles can penetrate out of the shell to reach the position of the sealing cavity and penetrate out of the sealing assemblies. Opening or closing of the gland of the vacuum packaging machine can be achieved through small torque, the structure is simple, operation is convenient, meanwhile, accidental closing of the gland can be prevented, high safety is achieved, in addition, rapid air guiding can be achieved through the air guiding nozzle assembly, and the vacuum pumping efficiency of packaging materials can be improved.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the technical field of packaging machines, and in particular, to a vacuum packaging machine. Background Art

[0002] Vacuum packaging involves sealing unsealed bags after evacuating them within a vacuum chamber. Vacuum-packed food can significantly extend its shelf life. Currently, vacuum packaging machines consist of a turntable with multiple vacuum chambers equally spaced around its periphery. These machines perform various steps, including bagging, lid closing, vacuuming, heat sealing, cooling, exhausting, and lid opening. Existing vacuum packaging machines have complex capping mechanisms, making precise opening and closing control impossible and posing safety risks. Furthermore, vacuuming efficiency is low, making it difficult to achieve rapid operation within a specific timeframe. Summary of the Invention

[0003] In order to solve the problems existing in the prior art, an embodiment of the present disclosure provides a vacuum packaging machine.

[0004] In view of this, an embodiment of the present disclosure provides a vacuum packaging machine, comprising a base plate, a shell is arranged on the base plate, a sealing platform is arranged on the base plate and on the outside of the shell, a pressure block is correspondingly arranged on the sealing platform, a sealing assembly is arranged on the sealing platform, a driving assembly connected to the pressure block is arranged in the shell, the pressure block is driven by the driving assembly to rotate relative to the shell and can be pressed on the sealing platform, a sealing cavity is formed between the sealing platform and the pressure block, a plurality of air guide nozzle assemblies are arranged side by side in the shell, the air guide nozzle assembly includes an air guide nozzle, and the air guide nozzle can pass through the shell to reach the position of the sealing cavity and pass through from between the sealing assemblies.

[0005] In some embodiments, the drive assembly includes a first drive device and at least one first transmission assembly connected to each other, the first drive device is connected to the first transmission assembly, the first transmission assembly passes through the shell and is connected to the pressure block, and the drive assembly drives the pressure block to rotate relative to the shell and can be pressed on the sealing table.

[0006] In some embodiments, the first transmission assembly includes a rotating shaft, a connecting rod and a lever, the first driving device is connected to one end of the rotating shaft, and a swinging member is provided at the other end of the rotating shaft. The swinging member can rotate around the axis of the rotating shaft, and the swinging member is connected to one end of the lever through the connecting rod, and the other end of the lever is connected to the pressure block. The middle part of the lever is provided on the base plate and can rotate relative to the base plate.

[0007] In some embodiments, the first driving device has a self-locking function, and a self-locking triggering condition of the first driving device is associated with a state of the pressing block.

[0008] In some embodiments, the air guide nozzle assembly also includes a box body, a second drive device is provided at one end of the box body, a sealing seat is provided at the other end of the box body, a second transmission assembly connected to the second drive device is provided in the box body, and the air guide nozzle is provided on the second transmission assembly and can move in and out relative to the box body.

[0009] In some embodiments, the second transmission assembly includes a screw, one end of which is connected to the second driving device, a connecting piece that moves along the screw is provided on the screw, and the air guide nozzle is provided on the connecting piece.

[0010] In some embodiments, the connecting member includes a base, a positioning portion and a transmission portion are provided at the bottom of the base, the positioning portion extends from the bottom of the base to the front of the base to position the air guide nozzle, and the transmission portion is sleeved on the outside of the screw.

[0011] In some embodiments, the base has a groove, a mounting block is arranged in the groove, the air guide nozzle is arranged on the mounting block, a mounting groove is arranged on the side of the base, and a mounting protrusion is arranged on the side of the mounting block that can be embedded in the mounting groove.

[0012] In some embodiments, the sealing assembly includes at least two sealing strips with different heights, and the air guide nozzle can pass through between the two sealing strips.

[0013] In some embodiments, the sealing strip is an annular structure, and the air guide nozzle passes through the annular structure.

[0014] The disclosed embodiment can open or close the pressure cover of the vacuum packaging machine with a small torque. It has a simple structure and is easy to operate. It can also prevent the pressure cover from closing accidentally and has high safety. In addition, rapid air conduction can be achieved through multiple air guide nozzle assemblies, which helps to improve the efficiency of vacuuming the packaged goods.

[0015] In order to make the above-mentioned objectives, features and advantages of the embodiments of the present disclosure more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In the drawings, which are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with letter suffixes or different letter suffixes may represent different instances of similar parts. The drawings generally illustrate various embodiments by way of example and not limitation, and together with the description and claims, are used to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used throughout the drawings to refer to the same or similar parts. Such embodiments are illustrative and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method. The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of this application. The illustrative embodiments of the present disclosure and their description are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0017] Figure 1 Schematic diagram of the three-dimensional structure of the vacuum packaging machine provided in the embodiment of the present disclosure;

[0018] Figure 2 is a side view of the vacuum packaging machine provided by an embodiment of the present disclosure;

[0019] Figure 3 Schematic diagram of the internal layout of the vacuum packaging machine provided by the embodiment of the present disclosure;

[0020] Figure 4 is a cross-sectional view of a vacuum packaging machine provided by an embodiment of the present disclosure;

[0021] Figure 5 is a three-dimensional schematic diagram of the internal layout of the vacuum packaging machine provided by an embodiment of the present disclosure;

[0022] Figure 6 is a top view of the internal arrangement of the vacuum packaging machine provided by an embodiment of the present disclosure;

[0023] Figure 7 is a side view of the internal arrangement of the vacuum packaging machine provided by an embodiment of the present disclosure;

[0024] Figure 8 is a three-dimensional schematic diagram of a driving component in a vacuum packaging machine provided by an embodiment of the present disclosure;

[0025] Figure 9 is a side view of a drive assembly in a vacuum packaging machine provided by an embodiment of the present disclosure;

[0026] Figure 10 Schematic diagram of the air guide nozzle extending from the vacuum packaging machine provided by the embodiment of the present disclosure;

[0027] Figure 11 Schematic diagram of the structure of the air guide nozzle assembly in the vacuum packaging machine provided by the embodiment of the present disclosure;

[0028] Figure 12 1 is a side view of an air guide nozzle assembly in a vacuum packaging machine provided by an embodiment of the present disclosure;

[0029] Figure 13 This is a schematic diagram of the internal structure of the air guide nozzle assembly in the vacuum packaging machine provided by an embodiment of the present disclosure;

[0030] Figure 14 is a side view of the interior of the air guide nozzle assembly in the vacuum packaging machine provided by an embodiment of the present disclosure;

[0031] Figure 15 Schematic diagram of the structure of the sealing strip in the vacuum packaging machine provided by the embodiment of the present disclosure.

[0032] The above drawings include the following reference numerals:

[0033] 1-housing; 11-bottom plate; 12-top plate; 13-side wall; 131-sensor; 14-operating table; 141-first sealing groove; 15-lever mounting seat; 2-pressing block; 21-second sealing groove; 22-sealing chamber; 3-pressing groove; 4-driving assembly; 41-first driving device; 42-first rotating shaft; 421-swinging member; 43-connecting rod; 44-lever; 45-coupling; 46-first reduction gear; 47-gear set; 48- Detection device; 5-air nozzle assembly; 51-housing; 52-second driving device; 53-sealing seat; 54-screw; 55-air nozzle; 56-connecting piece; 561-base; 562-positioning part; 563-transmission part; 564-mounting block; 565-mounting groove; 566-mounting protrusion; 6-pressure cover; 61-slide rail; 7-sealing assembly; 71-first sealing strip; 72-second sealing strip; 73-third sealing strip; 8-cutting piece. DETAILED DESCRIPTION

[0034] The specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings, but are not intended to limit the present disclosure.

[0035] It should be understood that various modifications may be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but merely as an example of an embodiment. Other modifications within the scope and spirit of the present disclosure will occur to those skilled in the art.

[0036] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the general description of the present disclosure given above and the detailed description of the embodiments given below, serve to explain the principles of the present disclosure.

[0037] These and other characteristics of the present disclosure will become apparent from the following description of a preferred form of embodiment given as a non-limiting example with reference to the accompanying drawings.

[0038] It should also be understood that although the present disclosure has been described with reference to certain specific examples, those skilled in the art will be able to realize many other equivalent forms of the present disclosure that have the characteristics recited in the claims and are therefore within the scope of protection defined thereby.

[0039] The above and other aspects, features and advantages of the present disclosure will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

[0040] Specific embodiments of the present disclosure will be described hereinafter with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present disclosure, which may be implemented in a variety of ways. Well-known and / or repetitive functions and structures are not described in detail to avoid obscuring the present disclosure with unnecessary or redundant detail. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but rather serve merely as a basis and representative basis for the claims to teach those skilled in the art to variously employ the present disclosure with substantially any suitable detailed structure.

[0041] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present disclosure described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0042] This description may use the phrases "in one embodiment," "in another embodiment," "in a further embodiment," or "in other embodiments," each of which may refer to one or more of the same or different embodiments according to the present disclosure.

[0043] The present disclosure provides a vacuum packaging machine. Figures 1 to 15As shown, it includes a bottom plate 11, on which a housing 1 is disposed. The housing 1 has a top plate 12. The bottom plate 11 and the top plate 12 may be, for example, rectangular. A plurality of side walls 13 are disposed between the bottom plate 11 and the top plate 12. The plurality of side walls 13 are sequentially connected and cooperate with the top plate 12 to form the housing 1. In this embodiment, the size of the bottom plate 11 is larger than that of the top plate 12, so that the housing 1 is disposed on a portion of the bottom plate 11. The side walls 13 on both sides and the rear are perpendicular to the bottom plate 11, while the side walls 13 on the front are inclined relative to the bottom plate 11.

[0044] Furthermore, a sealing platform 14 is provided on the outer side of the housing 1 at the front of the bottom plate 11, and a pressing block 2 is provided on the sealing platform 14. The pressing block 2 can rotate relative to the housing 1 and press against the sealing platform 14. Thus, when sealing the package, the opening of the package is placed on the sealing platform 14 and below the pressing block 2. The pressing block 2 is rotated relative to the housing 1 to open or close the package, thereby pressing the opening of the package against the sealing platform 14 to seal the opening. The package can then be vacuumed.

[0045] Preferably, sensors 131 are provided on the inner sides of the two opposite side walls 13 close to the sealing platform 14. The sensors 131 here are used to detect whether there are foreign objects on the sealing platform 14. For example, it can prevent the operator's hands from being placed on the sealing platform 14 and causing injury. The sensors 131 here can be photoelectric sensors. For example, a photoelectric transmitter can be provided on one side wall 13, and a photoelectric receiver can be provided on the other side wall 13. When there are foreign objects on the sealing platform 14, the transmission of the photoelectric signal will be blocked, thereby controlling the pressing block 2 to stop rotating.

[0046] like Figure 4 As shown, the upper surface of the sealing platform 14 here is opposite to the lower surface of the pressing block 2, and a first sealing groove 141 is provided on the upper surface of the sealing platform 14, and a vacuum extraction hole is provided at the bottom of the first sealing groove 141, and the vacuum shaft hole is connected to the pump in the housing 1; a second sealing groove 21 is provided on the lower surface of the pressing block 2, when the pressing block 2 is pressed on the sealing platform 14, the first sealing groove 141 and the second sealing groove 21 are relatively pressed to form a sealed cavity 22, and the sealed cavity 22 can be vacuumed through the vacuum extraction hole.

[0047] Furthermore, a cutting assembly is provided on the top plate 12, and the cutting assembly is used to perform a cutting operation on the seal of the packaged package. Specifically, the cutting assembly includes a pressure cover 6 and a pressure groove 3 matching the pressure cover 6, wherein the pressure cover 6 is provided on the outside of the top plate 12 and extends along the length direction of the shell 1, and one side of the pressure cover 6 is rotatably connected to the top plate 12, and the pressure groove 3 is provided on the surface of the top plate 12, and the pressure cover 6 can be rotated relative to the top plate 12 and pressed into the pressure groove 3, and the seal of the package is fixed by the cooperation of the pressure cover 6 and the pressure groove 3. A cutting piece 8 is provided on the pressure cover 6, and the cutting piece 8 can cut the seal of the package after fixing the seal of the package.

[0048] Specifically, the pressing cover 6 is provided with a hollowed-out slide rail 61, and the cutting member 8 is disposed on the slide rail 61 and is capable of sliding back and forth along the length of the housing 1. During the cutting operation, the sealed end of the package is fixed to the pressing groove 3, the pressing cover 6 rotates to press the sealed end of the package, and the cutting member 8 slides to cut the sealed end of the package.

[0049] Furthermore, a drive assembly 4 is provided in the cavity, and the drive assembly 4 is particularly provided on the bottom plate 1, and is used to drive the pressing block 2 to rotate relative to the housing 1. Specifically, the drive assembly 4 includes a first drive device 41 and at least one first transmission assembly connected to each other, wherein the first drive device 41 is provided on the bottom plate 11 of the housing 1, and the first drive device 41 can be, for example, a motor. The output shaft of the first drive device 41 is connected to the first transmission assembly, and the first transmission assembly is connected to the pressing block 2, so that the first drive device 41 outputs torque to drive the first transmission assembly to move, and then drives the pressing block 2 to rotate through the first transmission assembly, thereby realizing the opening or closing of the pressing block 2.

[0050] The first transmission assembly here can be one or more, wherein, in order to increase the driving force on the pressure block 2, the driving assembly 4 includes multiple first transmission assemblies connected to the first driving device 41, wherein the deceleration device 45 can be connected to the pressure block 2 through multiple first transmission assemblies, so that the first driving device 41 can realize the opening or closing of the pressure block 2 through multiple first transmission assemblies.

[0051] In this embodiment, two first transmission assemblies are arranged side by side on the base plate 1. The two first transmission assemblies are respectively connected to the two ends of the pressing block 2, thereby driving the rotation of the pressing block 2 from two different positions. Preferably, the two first transmission assemblies are interconnected to achieve joint movement.

[0052] Specifically, each of the first transmission components includes a first rotating shaft 42, a connecting rod 43, and a lever 44, wherein the first driving device 41 is connected to one end of the first rotating shaft 42 to drive the first rotating shaft 42 to rotate. The first rotating shaft 42 here can, for example, be set on the base plate 11 through a rotating shaft support seat. A swinging member 421 is set at the other end of the first rotating shaft 42. The swinging member 421 here can, for example, be an S-shaped structure. When the first rotating shaft 42 rotates, it drives the swinging member 421 to rotate around the axis of the first rotating shaft 42. The first rotating shaft 42 and the swinging member 421 here can be assembled separately or formed as one piece.

[0053] In this embodiment, the first rotating shafts 42 in the two first transmission assemblies can be coaxially connected or can adopt an integrated structure, for example, a coupling 45 is set between the two first rotating shafts 42, and the two first rotating shafts 42 rotate synchronously through the coupling 45.

[0054] Furthermore, the swinging member 421 is connected to the first end of the lever 44 through the connecting rod 43. The middle portion of the lever 44 is disposed on the bottom plate 11 of the housing 1 and is rotatable relative to the bottom plate 11. The second end of the lever 44 passes through the side wall 13 and is connected to the pressure block 2 outside the side wall 13. When the swinging member 421 swings, the pressure block 2 can be driven to move by the lever 44. The lever 44 is preferably a T-shaped structure, with the ends of its horizontal side connected to the connecting rod 43 and the pressure block 2 respectively, and its vertical side rotatably connected to the base 11. In this way, when one end of the lever 44 moves downward, the other end of the lever 44 moves upward based on the lever action. By providing the lever 44, the pressure block 2 can be driven to move by a small force on one side of the swinging member 421.

[0055] Furthermore, the first end of the connecting rod 43 is rotatably connected to the swinging member 421, and the second end of the connecting rod 43 is rotatably connected to the first end of the lever 44. In one embodiment, the connecting rod 43 includes a connecting rod body, for example, in the shape of a strip, with a first connecting hole provided at the first end of the connecting rod body and a second connecting hole provided at the second end of the connecting rod body. The swinging member 421 can extend into the first connecting hole at the first end of the connecting rod body, thereby achieving a rotatable connection with the swinging member 421. The second connecting hole at the second end of the connecting rod body cooperates with a fastener to achieve a rotatable connection between the connecting rod body and the lever 44.

[0056] In another embodiment, a first connecting hole is provided at the first end of the connecting rod body, and a slot is provided at the second end of the connecting rod body, wherein the swinging member 421 can extend into the first connecting hole located at the first end of the connecting rod body, and the first end of the lever 44 is inserted into the slot at the second end of the connecting rod body and is rotatably connected to the second end of the connecting rod body through a fastener, so that the rotation of the swinging member 421 can drive the first end of the lever 44 to move to one side or the other side through the connecting rod 43.

[0057] Furthermore, the middle portion of the lever 44 is disposed on the bottom plate 11 of the housing 1 via a lever mounting seat 15. The distance between the lever mounting seat 15 and the first end or the second end of the lever 44 can be set according to the magnitude of the required force. Specifically, the lever mounting seat 15 is rotatably connected to the middle portion of the lever 44 via a pin, or a mounting slot is provided on the lever mounting seat 15, a second rotating shaft is provided in the mounting slot, the middle portion of the lever 44 is inserted into the mounting slot and rotatably connected to the second rotating shaft, so that the lever 44 can rotate relative to the second rotating shaft. With the above-mentioned structure, when the first end of the lever 44 moves to one side, the second end of the lever 44 can move to the other side, thereby driving the rotation of the pressure block 2.

[0058] When the vacuum packaging machine of this embodiment is used, the rotation of the first rotating shaft 42 drives the rotation of the swinging member 421, and then the first end of the lever 44 is driven to move to one side or the other side through the connecting rod 43. Based on the leverage of the middle part of the lever 44, the second end of the lever 44 is driven to move to one side or the other side, thereby driving the rotation of the pressing block 2, and finally realizing the opening or closing of the pressing block 2.

[0059] Furthermore, in order to achieve control over the output of the first drive device 41 , a reduction gear 46 is provided between the first drive device 41 and the first rotating shaft 42 . The reduction gear 46 here may be, for example, a gear box, which can adjust the torque output by the first drive device 41 .

[0060] Furthermore, a gear set 47 can be provided between the output shaft of the reduction device 46 and the first rotating shaft 42. The gear set 47 can ensure that power is quickly transmitted from the reduction device 45 to the first rotating shaft 42 without power loss.

[0061] In addition, in order to detect the movement of the lever 44 , a detection device 48 is provided on the base plate 11 . The detection device 48 here can detect the extent of the movement of the lever 44 .

[0062] Furthermore, the first drive device 41 also has a self-locking function, such as a self-locking motor. Here, since the first drive device 41 has a self-locking function, for example, the self-locking triggering condition of the first drive device 41 can be associated with the state of the pressure block 2 of the air guide nozzle. For example, when the pressure block 2 is manually opened or closed, the corresponding rotation of the connecting rod 43 triggers the self-locking of the first drive device 41, thereby preventing the first rotating shaft 42 from rotating. In addition, by triggering the self-locking, the internal circuit of the vacuum packaging machine can also be disconnected. For example, when the pressure block 2 is in the open state, the self-locking function of the first drive device 41 is triggered to cut off the power supply to the vacuum packaging machine, so that the pressure block 2 will not be accidentally closed under the drive of the first drive device 41. In addition, since the first drive device 41 is connected to the pressure block 2 through the first transmission assembly, the opening or closing of the pressure block 2 can be manually controlled when the first drive device 41 triggers the self-locking.

[0063] In this embodiment, when two first transmission assemblies are used, the two first transmission assemblies can be symmetrically arranged relative to the first driving device 41. The power output by the first driving device 41 is transmitted to the reduction device 46. The output shaft of the reduction device 46 is connected to the coupling 45 through a gear set 47. The coupling 45 coaxially connects the two first rotating shafts 42.

[0064] The two first transmission assemblies are respectively connected to the pressure block 2, so that the torque output by the reduction device 46 is transmitted through the two first transmission assemblies. The first rotating shafts 42 of the two first transmission assemblies are coaxially arranged. In this way, the torque is transmitted to the two first transmission assemblies through the first drive device 41, and then the movement of the pressure block 2 is driven by the movement of the two first transmission assemblies, which can significantly increase the driving force on the pressure block 2. When the opening torque of the pressure block 2 is constant, the first drive device 41 can output a smaller torque through the two first transmission assemblies to transmit it to the corresponding position of the lever 44, so as to drive the opening or closing of the pressure block 2.

[0065] The embodiment of the present disclosure can realize the opening or closing of the pressing block of the vacuum packaging machine based on a small torque through the transmission component. It has a simple structure and is easy to operate. At the same time, it can prevent the pressing block from closing accidentally, and has high safety.

[0066] Furthermore, in order to achieve air guidance for the packaged items during the vacuuming operation, at least one air guide nozzle assembly 5 is provided on the base plate 11. When multiple air guide nozzle assemblies 5 are provided, the multiple air guide nozzle assemblies 5 can be arranged in parallel. In this embodiment, two air guide nozzle assemblies 5 are provided. The air guidance operation for the packaged items is achieved through the two air guide nozzle assemblies 5, which can improve the vacuuming effect. In this embodiment, the two air guide nozzle assemblies 5 are arranged side by side, particularly between the two levers 44, thereby improving the space utilization within the housing 1.

[0067] Specifically, the air guide nozzle assembly 5 includes a housing 51 and an air guide nozzle 55. The air guide nozzle 55 can extend from the housing 51. The air guide nozzle 55 is a flat structure with an air guide groove on its surface. The housing 51 is disposed on the base plate 1 and extends in the direction in which the air guide nozzle 55 extends. The housing 51 is open at both ends. The first end of the housing 51 is provided with a second drive device 52, and the second end of the housing 51 is provided with a sealing seat 53. The sealing seat 53 is disposed on the base plate 1, and the air guide nozzle 55 can pass through the sealing seat 53.

[0068] Furthermore, a second transmission assembly is disposed within the housing 51, and the air guide nozzle 55 is disposed on the second transmission assembly. The second transmission assembly is connected to the second drive device 52. Driven by the second drive device 53, the second transmission assembly can drive the air guide nozzle 55 to move toward the pressing block 2. In addition, a second reduction device 57 can be disposed between the second transmission assembly and the second drive device 52, and the power output by the second drive device 52 can be adjusted by the second reduction device 57.

[0069] Furthermore, the second transmission assembly includes a screw 54, one end of which is connected to the output shaft of the second driving device 52 or the output shaft of the second reduction device 57. The screw 54 can rotate under the drive of the second driving device 52. A connecting piece 56 is provided on the screw 54, and the air guide nozzle 55 is provided on the connecting piece 56. In addition, as the screw 54 rotates, the connecting piece 56 can move in a straight line, for example, from Figure 12 The air guide nozzle 55 moves from position A to position B or from position B to position A, thereby driving the air guide nozzle 55 to move toward or away from the pressing block 2.

[0070] Specifically, the connecting member 56 includes a base 561, a positioning portion 562 is provided at the bottom of the base 561, and the positioning portion 562 extends from the bottom of the base 561 to the front of the base 561. A transmission portion 563 is also provided at the bottom of the base 561, and the transmission portion 563 is sleeved on the outside of the screw 54.

[0071] Furthermore, the base 561 has a groove, in which a mounting block 564 is provided. One end of the air guide nozzle 55 is connected to the mounting block 564 , and the other end thereof passes through the positioning portion 562 . The positioning portion 562 here can ensure the posture of the air guide nozzle 55 .

[0072] To secure the mounting block 564, a mounting groove 565 is provided on each side of the base 561, and a mounting protrusion 566 is provided on each side of the mounting block 564. The mounting protrusions 566 can be embedded in the mounting grooves 565, thereby stably positioning the mounting block 564 within the groove. In this embodiment, the mounting block 564 is made of an elastic material. The mounting protrusions 566 are cylindrical, and the mounting groove 565 is a circular groove with a notch. The notch is smaller than the mounting protrusion 566, thereby facilitating the positioning of the mounting protrusion 566 within the mounting groove 565.

[0073] Furthermore, sealing assemblies 7 are provided between the sealing platform 14 and the pressing block 2, including an upper sealing assembly and a lower sealing assembly. The two sealing assemblies 7 are provided on the upper surface of the sealing platform 14, and may also be provided on the lower surface of the pressing block 2. When the pressing block 2 is pressed against the sealing platform 14, the first sealing groove 141 and the second sealing groove 21 abut against each other and are squeezed by the two sealing assemblies 7 to form the sealed cavity 22. The air guide nozzle 55 passes through the sealed cavity 22 and between the sealing assemblies 7 after passing through the housing 1.

[0074] When sealing the package, the bag mouth of the package is placed on the sealing platform 14 and pressed by the two sealing components 7, and the air guide nozzle 55 is extended into the package, so that the package is connected with the sealing cavity 22. The pump in the shell 1 is started, and the air in the package is sucked into the sealing cavity 22 through the air guide nozzle 55 and is extracted through the vacuum hole, thereby realizing the vacuum operation of the package.

[0075] In this embodiment, the upper surface of the sealing platform 14 and the lower surface of the pressing block 2 are inclined, wherein the edge of the first sealing groove 141 close to the housing 1 is higher than the edge away from the housing 1. Correspondingly, the edge of the second sealing groove 21 close to the housing 1 is higher than the edge away from the housing 1. The two sealing assemblies 7 are respectively arranged around the first sealing groove 141 and the second sealing groove 21.

[0076] In this embodiment, the sealing assembly 7 is an annular structure, comprising a first sealing strip 71 and a second sealing strip 72. The first sealing strip 71 and the second sealing strip 72 both extend along the length of the housing 1, and the corresponding ends of the first sealing strip 71 and the second sealing strip 72 are connected by a third sealing strip 73. The first sealing strip 71 is vertically taller than the second sealing strip 72. The first sealing strip 71 of the upper sealing assembly is pressed against the first sealing strip 71 of the lower sealing assembly, the second sealing strip 72 of the upper sealing assembly is pressed against the second sealing strip 72 of the lower sealing assembly, and the third sealing strip 73 of the upper sealing assembly is pressed against the third sealing strip 73 of the lower sealing assembly.

[0077] In this embodiment, the air guide nozzle 55 passes between the first sealing strip 71 and the second sealing strip 72 of the lower sealing assembly. Specifically, after extending and passing through the sealing seat 53, the air guide nozzle 55 passes between the first sealing strip 71 and the second sealing strip 72 of the lower sealing assembly. This allows the first sealing strip 71 and the second sealing strip 72 to seal both above and below the air guide nozzle 55. This structure effectively prevents excessive wear on the sealing strip during movement of the air guide nozzle, extending the service life of the sealing strip, and effectively ensuring the high sealing performance of the vacuum chamber, ensuring the vacuuming effect.

[0078] The embodiment of the present disclosure can achieve rapid air conduction through multiple air conduction nozzle assemblies, which helps to improve the efficiency of vacuuming the packaged objects.

[0079] In the above embodiments of the present disclosure, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0080] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0081] In addition to the above, it should be noted that references to "one embodiment," "another embodiment," or "an embodiment" in this specification refer to specific features, structures, or characteristics described in conjunction with that embodiment as included in at least one embodiment generally described in this application. The appearance of the same term in multiple places in the specification does not necessarily refer to the same embodiment.

[0082] Furthermore, when a specific feature, structure, or characteristic is described in conjunction with any embodiment, it is intended that such feature, structure, or characteristic may be implemented in conjunction with other embodiments and also fall within the scope of the present disclosure.

[0083] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0084] The foregoing description is merely a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure.

Claims

1. A vacuum packaging machine, characterized in that: It includes a base plate, a shell is arranged on the base plate, a sealing platform is arranged on the base plate and on the outside of the shell, a pressure block is correspondingly arranged on the sealing platform, a sealing assembly is arranged on the sealing platform, a driving assembly connected to the pressure block is arranged in the shell, the pressure block is driven by the driving assembly to rotate relative to the shell and can be pressed on the sealing platform, a sealed cavity is formed between the sealing platform and the pressure block, at least one air guide nozzle assembly is arranged in the shell, the air guide nozzle assembly includes an air guide nozzle, and the air guide nozzle can pass through the shell to reach the position of the sealed cavity and pass through between the sealing assemblies.

2. The vacuum packaging machine according to claim 1, characterized in that The drive assembly includes a first drive device and at least one first transmission assembly that are connected to each other. The first drive device is connected to the first transmission assembly. The first transmission assembly passes through the shell and is connected to the pressure block. The drive assembly drives the pressure block to rotate relative to the shell and can press on the sealing platform.

3. The vacuum packaging machine according to claim 2, characterized in that: The first transmission assembly includes a rotating shaft, a connecting rod and a lever. The first driving device is connected to one end of the rotating shaft. A swinging member is provided at the other end of the rotating shaft. The swinging member can rotate around the axis of the rotating shaft. The swinging member is connected to one end of the lever through the connecting rod. The other end of the lever is connected to the pressure block. The middle part of the lever is provided on the base plate and can rotate relative to the base plate.

4. The vacuum packaging machine according to claim 2, characterized in that: The first driving device has a self-locking function, and a self-locking triggering condition of the first driving device is associated with a state of the pressing block.

5. The vacuum packaging machine according to any one of claims 1 to 4, characterized in that: The air guide nozzle assembly also includes a box body, a second drive device is provided at one end of the box body, a sealing seat is provided at the other end of the box body, a second transmission assembly connected to the second drive device is provided in the box body, and the air guide nozzle is provided on the second transmission assembly and can move in and out relative to the box body.

6. The vacuum packaging machine according to claim 5, characterized in that: The second transmission assembly includes a screw, one end of which is connected to the second driving device, a connecting piece that moves along the screw is provided on the screw, and the air guide nozzle is provided on the connecting piece.

7. The vacuum packaging machine according to claim 6, characterized in that: The connecting member includes a base, a positioning portion and a transmission portion are provided at the bottom of the base, the positioning portion extends from the bottom of the base to the front of the base to position the air guide nozzle, and the transmission portion is sleeved on the outside of the screw.

8. The vacuum packaging machine according to claim 7, characterized in that: The base has a groove, a mounting block is arranged in the groove, the air guide nozzle is arranged on the mounting block, a mounting groove is arranged on the side of the base, and a mounting protrusion that can be embedded in the mounting groove is arranged on the side of the mounting block.

9. The vacuum packaging machine according to claim 1, characterized in that: The sealing assembly includes at least two sealing strips of different heights, and the air guide nozzle can pass through between the two sealing strips.

10. The vacuum packaging machine according to claim 9, characterized in that: The sealing strip is an annular structure, and the air guide nozzle passes through the annular structure.

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