An automatic vacuum packaging machine

Abstract

The utility model provides a kind of automatically opened and closed vacuum packaging machine, including bottom plate, shell is arranged on the bottom plate, sealing station is arranged on the bottom plate and located the outside of shell, corresponding pressure block is arranged on the sealing station, driving assembly connected with the pressure block is arranged in the shell, the pressure block is rotated relative to the shell by the driving assembly and can be pressed on the sealing station. The utility model embodiment can realize the opening or closure of the gland of vacuum packaging machine by smaller torque, simple structure and convenient operation, and can also prevent accidental closure of the gland, with high safety.

Description

Technical Field

[0001] This utility model relates to the technical field of packaging machines, and more specifically, to an automatic opening and closing vacuum packaging machine. Background Technology

[0002] Vacuum packaging involves sealing an unsealed bag after it has been vacuum-sealed in a vacuum chamber. Vacuum-packaged food can have its shelf life significantly extended. Currently, vacuum packaging machines include a turntable with multiple vacuum chambers around its outer circumference, corresponding to processes such as bag loading, lid closing, vacuuming, heat sealing, cooling, venting, and lid opening. However, the lid opening mechanism of existing vacuum packaging machines is relatively complex, making precise opening and closing control impossible, and also posing certain safety risks. Utility Model Content

[0003] To address the problems existing in the prior art, this utility model provides an automatic opening and closing vacuum packaging machine.

[0004] In view of this, the present invention provides an automatic opening and closing vacuum packaging machine, including a base plate, a housing on the base plate, a sealing platform on the base plate and located on the outside of the housing, a pressure block correspondingly arranged on the sealing platform, and a driving component connected to the pressure block arranged inside the housing, the driving component driving the pressure block to rotate relative to the housing and press it on the sealing platform.

[0005] In some embodiments, the drive assembly includes a first drive device and at least one first transmission assembly interconnected with each other, the first drive device being connected to the first transmission assembly, and the first transmission assembly passing through the housing and connected to the pressure block.

[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 the other end of the rotating shaft is provided with a swing member. The swing member is capable of rotating around the axis of the rotating shaft. The swing 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.

[0007] In some embodiments, the middle portion of the lever is disposed on the base plate and is rotatable relative to the base plate.

[0008] In some embodiments, the first end of the connecting rod is rotatably connected to the swing member, and the second end of the connecting rod is rotatably connected to the first end of the lever.

[0009] In some embodiments, a detection device is provided on the base plate, the detection device being used to detect the degree of rotation of the lever.

[0010] In some embodiments, the drive assembly includes two first transmission assemblies, the shafts of the two first transmission assemblies are coaxially arranged, and a speed reduction device is provided between the first drive device and the shafts.

[0011] In some embodiments, the first drive device has a self-locking function, and the self-locking triggering condition of the first drive device is associated with the state of the pressure block.

[0012] In some embodiments, a cutting assembly is provided on the upper surface of the housing. The cutting assembly includes a pressure cap and a pressure groove that matches the pressure cap. The pressure cap extends along the length direction of the housing. One side of the pressure cap is rotatably connected to the upper surface of the housing. The pressure groove is provided on the upper surface of the housing. The pressure cap can rotate relative to the housing and be pressed into the pressure groove. A cutting element is slidably provided on the pressure cap.

[0013] In some embodiments, at least one air guide nozzle assembly is provided within the housing, the air guide nozzle assembly including an air guide nozzle that is movable to pass through the housing and reach the position of the sealing platform.

[0014] This utility model embodiment can open or close the lid of a vacuum packaging machine with a small torque. It has a simple structure and is easy to operate. At the same time, it can prevent the lid from closing accidentally, thus having a high level of safety.

[0015] This utility model embodiment can open or close the lid of a vacuum packaging machine with a small torque. It has a simple structure and is easy to operate. At the same time, it can prevent the lid from closing accidentally, thus having a high level of safety.

[0016] To make the above-mentioned objects, features and advantages of the present utility model embodiments more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with or without letter suffixes may indicate different instances of similar parts. The drawings generally illustrate various embodiments by way of example rather than limitation and, together with the description and claims, serve to illustrate the disclosed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method. The accompanying drawings, which are provided to further understand the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with their description, serve to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0018] Figure 1 This is a three-dimensional structural diagram of the vacuum packaging machine provided in this embodiment of the utility model;

[0019] Figure 2 This is a side view of the vacuum packaging machine provided in this embodiment of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal layout of the vacuum packaging machine provided in this embodiment of the utility model;

[0021] Figure 4 This is a cross-sectional view of the vacuum packaging machine provided in this embodiment of the utility model;

[0022] Figure 5 This is a three-dimensional schematic diagram of the internal layout of the vacuum packaging machine provided in this embodiment of the utility model;

[0023] Figure 6 This is a top view of the internal layout of the vacuum packaging machine provided in this embodiment of the utility model;

[0024] Figure 7 This is a side view of the internal layout of the vacuum packaging machine provided in this embodiment of the present invention;

[0025] Figure 8 This is a three-dimensional schematic diagram of the drive assembly in the vacuum packaging machine provided in this embodiment of the utility model;

[0026] Figure 9 This is a side view of the drive assembly in the vacuum packaging machine provided in this embodiment of the utility model;

[0027] Figure 10 This is a schematic diagram of the air guide nozzle extending in the vacuum packaging machine provided in this embodiment of the utility model;

[0028] Figure 11 This is a schematic diagram of the air guide nozzle assembly in the vacuum packaging machine provided in this embodiment of the utility model;

[0029] Figure 12 This is a side view of the air guide nozzle assembly in the vacuum packaging machine provided in this embodiment of the utility model;

[0030] Figure 13 This is a schematic diagram of the internal structure of the air guide nozzle assembly in the vacuum packaging machine provided in this embodiment of the utility model;

[0031] Figure 14 This is a side view of the interior of the air guide nozzle assembly in the vacuum packaging machine provided in this embodiment of the utility model;

[0032] Figure 15This is a schematic diagram of the sealing strip in the vacuum packaging machine provided in this embodiment of the utility model.

[0033] The above figures include the following reference numerals:

[0034] 1-House; 11-Base plate; 12-Top plate; 13-Side wall; 131-Sensor; 14-Operating table; 141-First sealing groove; 15-Lever mounting base; 2-Pressure block; 21-Second sealing groove; 22-Sealing cavity; 3-Pressure groove; 4-Drive assembly; 41-First drive device; 42-First rotating shaft; 421-Swinging component; 43-Connecting rod; 44-Lever; 45-Coupling; 46-First reduction device; 47-Gear set; 48- Detection device; 5-Air guide nozzle assembly; 51-Box body; 52-Second drive device; 53-Sealing seat; 54-Screw; 55-Air guide nozzle; 56-Connector; 561-Base; 562-Positioning part; 563-Transmission part; 564-Mounting block; 565-Mounting groove; 566-Mounting protrusion; 6-Pressure cap; 61-Slide rail; 7-Sealing assembly; 71-First sealing strip; 72-Second sealing strip; 73-Third sealing strip; 8-Cutting part. Detailed Implementation

[0035] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but these are not intended to limit the scope of the present invention.

[0036] It should be understood that various modifications can be made to the embodiments disclosed herein. Therefore, the above description should not be considered as limiting, but merely as an example of embodiments. Other modifications within the scope and spirit of this invention will be apparent to those skilled in the art.

[0037] The accompanying drawings, which are included in and form part of this specification, illustrate embodiments of the present invention and, together with the general description of the present invention given above and the detailed description of the embodiments given below, serve to explain the principles of the present invention.

[0038] These and other features of the present invention will become apparent from the following description of preferred forms of embodiments given as non-limiting examples, with reference to the accompanying drawings.

[0039] It should also be understood that although the present invention has been described with reference to some specific examples, those skilled in the art can certainly implement many other equivalent forms of the present invention, which have the features described in the claims and are therefore all within the scope of protection defined herein.

[0040] The above and other aspects, features and advantages of the present invention will become more apparent when taken in conjunction with the accompanying drawings and in view of the following detailed description.

[0041] Specific embodiments of the present invention will now be described with reference to the accompanying drawings; however, it should be understood that the disclosed embodiments are merely examples of the present invention, which may be implemented in various ways. Well-known and / or repeated functions and structures are not described in detail to avoid unnecessary or redundant details that could obscure the present invention. Therefore, the specific structural and functional details disclosed herein are not intended to be limiting, but merely to serve as the basis and representative basis for the claims to teach those skilled in the art to use the present invention in a variety of substantially any suitable detailed structures.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] This specification may use the phrases “in one embodiment,” “in another embodiment,” “in yet another embodiment,” or “in other embodiments,” all of which may refer to one or more of the same or different embodiments according to the present invention.

[0044] This utility model embodiment provides a vacuum packaging machine, such as Figures 1 to 15 As shown, it includes a base plate 11, on which a housing 1 is disposed. The housing 1 has a top plate 12. The base plate 11 and the top plate 12 can be, for example, rectangular. A plurality of sidewalls 13 are disposed between the base plate 11 and the top plate 12. These sidewalls 13 are sequentially connected and cooperate with the top plate 12 to form the housing 1. In this embodiment, the size of the base plate 11 is larger than the size of the top plate 12, so that the housing 1 is disposed on a portion of the base plate 11. The sidewalls 13 located on both sides and the rear are perpendicular to the base plate 11, while the sidewalls 13 located at the front are inclined to the base plate 11.

[0045] Furthermore, a sealing platform 14 is provided on the outer side of the housing 1 at the front of the base plate 11. A pressure block 2 is provided on the sealing platform 14. The pressure 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 pressure block 2. By rotating the pressure block 2 relative to the housing 1 to open or close the package, the opening of the package is pressed tightly against the sealing platform 14 to achieve a seal. Then, a vacuuming operation can be performed on the package.

[0046] Preferably, sensors 131 are provided on the inner sides of the two opposing sidewalls 13 near the sealing platform 14. The sensors 131 are used to detect whether there are foreign objects on the sealing platform 14. For example, they can prevent the operator's hands from being placed on the sealing platform 14 and causing injury. The sensors 131 can be photoelectric sensors. For example, a photoelectric transmitter can be provided on one sidewall 13 and a photoelectric receiver can be provided on the opposite sidewall 13. When there are foreign objects on the sealing platform 14, they will block the transmission of photoelectric signals, thereby controlling the pressure block 2 to stop rotating.

[0047] like Figure 4 As shown, the upper surface of the sealing platform 14 is opposite to the lower surface of the pressure block 2. 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. The vacuum shaft hole is connected to the pump inside the housing 1. A second sealing groove 21 is provided on the lower surface of the pressure block 2. When the pressure block 2 is pressed on the sealing platform 14, the first sealing groove 141 and the second sealing groove 21 are pressed together to form a sealing cavity 22. The sealing cavity 22 can be vacuumed through the vacuum extraction hole.

[0048] Furthermore, a cutting assembly is provided on the top plate 12, which is used to cut the seal of the packaged item. Specifically, the cutting assembly includes a pressure cap 6 and a matching groove 3. The pressure cap 6 is located on the outer side of the top plate 12 and extends along the length of the housing 1. One side of the pressure cap 6 is rotatably connected to the top plate 12. The groove 3 is located on the surface of the top plate 12. The pressure cap 6 can rotate relative to the top plate 12 and be pressed into the groove 3. The seal of the packaged item is fixed through the cooperation of the pressure cap 6 and the groove 3. A cutting element 8 is provided on the pressure cap 6, which can cut the seal of the packaged item after it has been fixed.

[0049] Specifically, the pressure cap 6 is provided with a hollowed-out slide rail 61, and the cutting element 8 is disposed on the slide rail 61 and can slide back and forth along the length direction of the housing 1. During the cutting operation, the seal of the package is fixed on the pressure groove 3, the seal of the package is pressed down by the rotation of the pressure cap 6, and the seal of the package is cut open by the sliding of the cutting element 8.

[0050] Furthermore, a drive assembly 4 is disposed within the cavity, particularly on the base plate 1, for driving the pressure 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. The first drive device 41 is disposed on the base plate 11 of the housing 1, and may be, for example, a motor. The output shaft of the first drive device 41 is connected to the first transmission assembly, which is connected to the pressure block 2. Thus, the first drive device 41 outputs torque to drive the first transmission assembly, which in turn drives the pressure block 2 to rotate, thereby opening or closing the pressure block 2.

[0051] The first transmission component here can be one or more. In order to increase the driving force on the pressure block 2, the driving component 4 includes multiple first transmission components connected to the first driving device 41. The deceleration device 45 can be connected to the pressure block 2 through multiple first transmission components. In this way, the first driving device 41 can realize the opening or closing of the pressure block 2 through multiple first transmission components.

[0052] In this embodiment, two first transmission components are arranged side by side on the base plate 1. The two first transmission components are respectively connected to both ends of the pressure block 2, thereby driving the pressure block 2 to rotate from two different positions. Preferably, the two first transmission components are interconnected to achieve coordinated movement.

[0053] Specifically, each of the first transmission components includes a first rotating shaft 42, a connecting rod 43, and a lever 44. 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 can be mounted on the base plate 11, for example, via a rotating shaft support. A swing member 421 is provided at the other end of the first rotating shaft 42. The swing member 421 can be, for example, an S-shaped structure. When the first rotating shaft 42 rotates, it drives the swing member 421 to rotate around the axis of the first rotating shaft 42. The first rotating shaft 42 and the swing member 421 can be assembled separately or integrally formed.

[0054] In this embodiment, the first rotating shafts 42 in the two first transmission components can be coaxially connected or can be an integral structure. For example, a coupling 45 is provided between the two first rotating shafts 42, and the two first rotating shafts 42 can rotate synchronously through the coupling 45.

[0055] Furthermore, the swing member 421 is connected to the first end of the lever 44 via the connecting rod 43. The middle part of the lever 44 is disposed on the base plate 11 of the housing 1 and can rotate relative to the base 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 swing member 421 swings, the pressure block 2 can be driven to move through the lever 44. Preferably, the lever 44 has a T-shaped structure, with its two ends of the horizontal side connected to the connecting rod 43 and the pressure block 2 respectively, and its vertical side rotatably connected to the base 11. Thus, when one end of the lever 44 moves downward, for example, the other end of the lever 44 moves upward due to the lever action. By setting the lever 44, the pressure block 2 can be driven to move with a small force on one side of the swing member 421.

[0056] Furthermore, the first end of the connecting rod 43 is rotatably connected to the swing 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, for example, a strip-shaped connecting rod body, with a first connecting hole at the first end and a second connecting hole at the second end. The swing 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 swing member 421. The second connecting hole at the second end of the connecting rod body, through cooperation with a fastener, enables the connecting rod body to be rotatably connected to the lever 44.

[0057] 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. The swing member 421 can extend into the first connecting hole 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 by fasteners. In this way, the rotation of the swing member 421 can drive the first end of the lever 44 to move to one side or to the other side through the connecting rod 43.

[0058] Furthermore, the middle portion of the lever 44 is mounted on the base plate 11 of the housing 1 via a lever mounting seat 15. The distance between the lever mounting seat 15 and the first or second end of the lever 44 can be set according to the required force. Specifically, the lever mounting seat 15 and the middle portion of the lever 44 are rotatably connected by a pin, or the lever mounting seat 15 is provided with a mounting groove, in which a second rotating shaft is provided. The middle portion of the lever 44 is inserted into the mounting groove and rotatably connected to the second rotating shaft, thus allowing the lever 44 to rotate relative to the second rotating shaft. With the above 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.

[0059] When using the vacuum packaging machine of this embodiment, the rotation of the first rotating shaft 42 drives the rotation of the swing member 421, which in turn drives the first end of the lever 44 to move to one side or to the other side through the connecting rod 43. Based on the lever action of the middle part of the lever 44, the second end of the lever 44 is driven to move to one side or to the other side, thereby driving the rotation of the pressure block 2, and finally realizing the opening or closing of the pressure block 2.

[0060] Furthermore, in order to control 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 may be, for example, a gearbox, which can adjust the torque output by the first drive device 41.

[0061] Furthermore, a gear set 47 can be provided between the output shaft of the reduction device 46 and the first rotating shaft 42. By providing the gear set 47, it can be ensured that power is quickly transmitted from the reduction device 45 to the first rotating shaft 42 without power loss.

[0062] In addition, in order to detect the movement of the lever 44, a detection device 48 is provided on the base plate 11, which can detect the degree of movement of the lever 44.

[0063] Furthermore, the first drive device 41 also has a self-locking function, such as using a self-locking motor. Since the first drive device 41 has a self-locking function, the self-locking trigger condition of the first drive device 41 can be associated with the state of the pressure block 2. For example, when the pressure block 2 is manually opened or closed, the connecting rod 43 rotates accordingly, triggering the first drive device 41 to self-lock, thus preventing the first rotating shaft 42 from rotating. In addition, triggering the self-lock can also disconnect the internal circuitry of the vacuum packaging machine. For example, when the pressure block 2 is open, triggering the self-locking function of the first drive device 41 can de-energize the vacuum packaging machine, preventing the pressure block 2 from accidentally closing under the drive of the first drive device 41. Furthermore, 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-lock.

[0064] In this embodiment, when two first transmission components are used, the two first transmission components can be symmetrically arranged relative to the first drive device 41. The power output by the first drive 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.

[0065] The two first transmission components are connected to the pressure block 2 respectively, so that the torque output by the reduction device 46 is transmitted through the two first transmission components. The first rotating shafts 42 of the two first transmission components are coaxially arranged. In this way, the torque is transmitted from the first drive device 41 to the two first transmission components, and the movement of the two first transmission components drives the movement of the pressure block 2, which can significantly improve the driving force on the pressure block 2. When the opening torque of the pressure block 2 is constant, the two first transmission components allow the first drive device 41 to output a smaller torque to transmit to the corresponding lever 44 position, so as to drive the opening or closing of the pressure block 2.

[0066] This utility model embodiment enables the opening or closing of the pressure block of a vacuum packaging machine with a small torque through a transmission component. It has a simple structure and is easy to operate, while also preventing accidental closing of the pressure block, thus providing high safety.

[0067] Furthermore, to facilitate airflow to the packaged goods during the vacuuming process, at least one air-guiding nozzle assembly 5 is provided on the base plate 11. When multiple air-guiding nozzle assemblies 5 are present, they can be arranged side by side. In this embodiment, two air-guiding nozzle assemblies 5 are provided, and the airflow to the packaged goods is facilitated through the two air-guiding nozzle assemblies 5, thereby improving the vacuuming effect. In this embodiment, the two air-guiding nozzle assemblies 5 are arranged side by side, particularly between the two levers 44, thereby improving the space utilization rate within the housing 1.

[0068] 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 and has a flat structure with air guide grooves on its surface. The housing 51 is mounted on the base plate 1 and extends along the direction in which the air guide nozzle 55 extends. The housing 51 has openings at both ends. A second driving device 52 is mounted at the first end of the housing 51, and a sealing seat 53 is mounted at the second end of the housing 51. The sealing seat 53 is mounted on the base plate 1, and the air guide nozzle 55 can pass through the sealing seat 53.

[0069] Furthermore, a second transmission assembly is provided inside 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. Under the drive of the second drive device 53, the second transmission assembly can drive the air guide nozzle 55 to move towards the pressure block 2. In addition, a second reduction device 57 can also be provided between the second transmission assembly and the second drive device 52, through which the power output by the second drive device 52 can be adjusted.

[0070] Further, the second transmission assembly includes a screw 54, one end of which is connected to the output shaft of the second drive device 52 or the output shaft of the second reduction device 57. The screw 54 is rotatable under the drive of the second drive device 52. A connecting member 56 is provided on the screw 54, and the air guide nozzle 55 is provided on the connecting member 56. As the screw 54 rotates, the connecting member 56 can move linearly, for example from... Figure 12 The air nozzle 55 moves from position A to position B or from position B to position A, causing the air guide nozzle 55 to move toward or away from the pressure block 2.

[0071] Specifically, the connector 56 includes a base 561, a positioning part 562 is provided at the bottom of the base 561, the positioning part 562 extends from the bottom of the base 561 to the front of the base 561, and a transmission part 563 is also provided at the bottom of the base 561, the transmission part 563 is sleeved on the outside of the screw 54.

[0072] Furthermore, the base 561 has a groove, in which a mounting block 564 is disposed. One end of the air guide nozzle 55 is connected to the mounting block 564, and the other end passes through the positioning part 562. Here, the positioning part 562 can ensure the posture of the air guide nozzle 55.

[0073] To secure the mounting block 564, a mounting groove 565 is provided on each of the two sides of the base 561, and a mounting protrusion 566 is provided on each of the two sides of the mounting block 564. The mounting protrusion 566 can be embedded in the mounting groove 565, thereby allowing the mounting block 564 to be stably positioned within the groove. In this embodiment, the mounting block 564 is made of an elastic material. The mounting protrusion 566 is cylindrical, and the mounting groove 565 is a circular groove with a notch. The size of the notch is smaller than the size of the mounting protrusion 566 to confine the mounting protrusion 566 within the mounting groove 565.

[0074] Furthermore, a sealing assembly 7 is provided between the sealing platform 14 and the pressure block 2, namely an upper sealing assembly and a lower sealing assembly. The two sealing assemblies 7 are respectively disposed on the upper surface of the sealing platform 14, or they can be disposed on the lower surface of the pressure block 2. When the pressure block 2 presses on the sealing platform 14, the first sealing groove 141 and the second sealing groove 21 abut against each other and are squeezed together by the two sealing assemblies 7 to form the sealing cavity 22. The air guide nozzle 55 passes through the housing 1, passes through the sealing cavity 22, and passes between the sealing assemblies 7.

[0075] When sealing the packaging, the bag opening is placed on the sealing platform 14 and pressed together by the two sealing components 7. The air inlet 55 is inserted into the packaging, thus connecting the packaging with the sealing cavity 22. The pump inside the housing 1 is activated to draw air from the packaging into the sealing cavity 22 through the air inlet 55 and remove it through the vacuum extraction hole, thereby achieving a vacuuming operation on the packaging.

[0076] In this embodiment, the upper surface of the sealing platform 14 and the lower surface of the pressure block 2 are inclined. The edge of the first sealing groove 141 near the housing 1 is higher than the edge away from the housing 1. Correspondingly, the edge of the second sealing groove 21 near the housing 1 is higher than the edge away from the housing 1. Two sealing components 7 are respectively arranged around the first sealing groove 141 and the second sealing groove 21.

[0077] In this embodiment, the sealing assembly 7 is an annular structure, comprising a first sealing strip 71 and a second sealing strip 72. Both the first sealing strip 71 and the second sealing strip 72 extend along the length of the housing 1, and their corresponding ends are connected by a third sealing strip 73. The first sealing strip 71 is vertically higher than the second sealing strip 72. Here, 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.

[0078] 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 out 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, thus enabling sealing both above and below the air guide nozzle 55 through the first sealing strip 71 and the second sealing strip 72. This structure effectively prevents excessive wear on the sealing strips during the movement of the air guide nozzle, extends the service life of the sealing strips, and effectively ensures the high sealing performance of the vacuum chamber, guaranteeing the vacuuming effect.

[0079] This embodiment of the invention enables rapid air delivery through multiple air inlet assemblies, which helps to improve the efficiency of vacuuming packaging materials.

[0080] In the above embodiments of this utility model, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0081] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways, rotated 90 degrees, or in other orientations, and the spatial relative descriptions used herein will be interpreted accordingly.

[0082] In addition to the above, it should be noted that the terms "one embodiment," "another embodiment," and "embodiment" used in this specification refer to specific features, structures, or characteristics described in connection with that embodiment, which are included in at least one embodiment of the general description in this application. The appearance of the same term in multiple places in the specification does not necessarily refer to the same embodiment.

[0083] Furthermore, when a specific feature, structure, or characteristic is described in conjunction with any embodiment, it is claimed that implementing such a feature, structure, or characteristic in conjunction with other embodiments also falls within the scope of this utility model.

[0084] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0085] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An automatic opening and closing vacuum packaging machine, characterized in that, The device includes a base plate, a housing is mounted on the base plate, a sealing platform is mounted on the base plate and located on the outside of the housing, a pressure block is correspondingly mounted on the sealing platform, and a drive assembly connected to the pressure block is mounted inside the housing. The drive assembly drives the pressure block to rotate relative to the housing and press it against the sealing platform. 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, and the first transmission assembly passes through the housing and is connected to the pressure block. 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 swing member is provided at the other end of the rotating shaft. The swing member can rotate around the axis of the rotating shaft. The swing 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.

2. The automatic opening and closing vacuum packaging machine according to claim 1, characterized in that, The lever is positioned at the center of the base plate and is rotatable relative to the base plate.

3. The automatic opening and closing vacuum packaging machine according to claim 1, characterized in that, The first end of the connecting rod is rotatably connected to the swing member, and the second end of the connecting rod is rotatably connected to the first end of the lever.

4. The automatic opening and closing vacuum packaging machine according to claim 1, characterized in that, A detection device is provided on the base plate, which is used to detect the degree of rotation of the lever.

5. The automatic opening and closing vacuum packaging machine according to claim 1, characterized in that, The drive assembly includes two first transmission assemblies, the rotating shafts of the two first transmission assemblies are coaxially arranged, and a speed reduction device is provided between the first drive device and the rotating shaft.

6. The automatic opening and closing vacuum packaging machine according to claim 1, characterized in that, The first driving device has a self-locking function, and the self-locking triggering condition of the first driving device is related to the state of the pressure block.

7. The automatic opening and closing vacuum packaging machine according to claim 1, characterized in that, A cutting assembly is provided on the upper surface of the housing. The cutting assembly includes a pressure cap and a pressure groove that matches the pressure cap. The pressure cap extends along the length direction of the housing. One side of the pressure cap is rotatably connected to the upper surface of the housing. The pressure groove is provided on the upper surface of the housing. The pressure cap can rotate relative to the housing and be pressed into the pressure groove. A cutting element is slidably provided on the pressure cap.

8. The automatic opening and closing vacuum packaging machine according to any one of claims 1-7, characterized in that, At least one air guide nozzle assembly is provided inside the housing. The air guide nozzle assembly includes an air guide nozzle that is movable to pass through the housing and reach the position of the sealing platform.

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