Vacuum packaging machine

Abstract

The utility model belongs to the technical field of vacuum packaging, and particularly relates to a vacuum packaging machine which comprises a base, a U-shaped plate is fixedly installed on the top of the base, sliding grooves are symmetrically formed in the U-shaped plate, sliding blocks are installed in the two sliding grooves in a sliding mode, and a baffle is fixedly installed between the two sliding blocks. The driving assembly is located on the U-shaped plate and used for driving one sliding block to move upwards or downwards. The device comprises a baffle plate, an electric push rod, a connecting plate and a heater, the electric push rod is fixedly mounted on one side of the baffle plate, the output end of the electric push rod is fixedly provided with the connecting plate, and the heater is fixedly mounted at the bottom of the connecting plate. The quilt is prevented from deforming and moving to the position of a bag opening during extrusion, the influence on bag sealing is avoided, and after sealing is completed, the excessive part of the bag opening can be cut off, so that the sealed bag is more attractive.

Description

Technical Field

[0001] The utility model belongs to the technical field of vacuum packaging, and particularly relates to a vacuum packaging machine. Background Art

[0002] Vacuum packaging refers to a packaging method in which products are placed in an airtight packaging container, the air inside the container is evacuated, and the sealed container reaches a predetermined vacuum degree.

[0003] For example, a Chinese patent with the publication number CN219838746U discloses a vacuum packaging machine, which relates to the technical field of packaging machines and includes a base. There is a top plate above the base, support columns are provided at the four corners of the bottom surface of the top plate, a rectangular frame is provided on the top surface of the base, an electric hydraulic cylinder is provided in the middle of the top surface of the top plate, the movable end of the electric hydraulic cylinder movably penetrates to the bottom surface of the top plate, an upper compression plate is provided on the bottom surface of the electric hydraulic cylinder and cooperates with the rectangular frame, and a sealing mechanism is provided on the front end surface of the upper compression plate; by using the rectangular frame in the utility model, it is convenient to limit the quilt, ensure that the compressed quilt maintains a certain shape, so as to facilitate the storage or transportation of the quilt; and then through the mutual extrusion between the upper compression plate and the rectangular frame, it is convenient to discharge the air in the quilt bag, realize the vacuum packaging of the quilt, so as to facilitate reducing the volume of the quilt and further facilitate the storage or transportation of the quilt.

[0004] The above patent has the following problems:

[0005] There are some disadvantages when using this patent. For example, when the device squeezes the quilt, the bag mouth is in an open state, and the quilt will displace towards the bag mouth when being squeezed. After squeezing, part of the quilt will be located near the bag mouth, which will affect the sealing of the bag mouth. At the same time, after the bag is sealed, there will be an extra part at the bag mouth of the bag, and the device is not convenient to cut off the extra part of the bag, affecting the overall aesthetics. In view of this, we propose a vacuum packaging machine. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a vacuum packaging machine to solve the problems raised in the above background art.

[0007] In view of this, the utility model provides a vacuum packaging machine, including:

[0008] A base, on the top of which a U-shaped plate is fixedly installed. The U-shaped plate is symmetrically provided with sliding grooves inside, and sliders are slidably installed in both of the two sliding grooves. A baffle is fixedly installed between the two sliders;

[0009] A driving assembly, which is located on the U-shaped plate and is used to drive one of the sliders to move up or down;

[0010] Electric push rod, the electric push rod is fixedly installed on one side of the baffle, the output end of the electric push rod is fixedly installed with a connecting plate, the bottom of the connecting plate is fixedly installed with a heater, the bottom of the heater is fixedly installed with a cutter and an arc-shaped block, a groove is opened at the top of the base and directly below the arc-shaped block, a cutting groove is opened at the top of the base and directly below the cutter, and a collection groove is opened at the top of the base and on one side of the cutting groove;

[0011] L-shaped frame, the L-shaped frame is fixedly installed on the top of the base and on one side of the U-shaped plate, a hydraulic cylinder is fixedly installed on the L-shaped frame, and the output end of the hydraulic cylinder is fixedly installed with a pressing plate.

[0012] In this technical solution, first, through the set driving component, the driving component drives one of the sliders to move upward. Subsequently, one of the sliders will drive the baffle to move upward, and the baffle will drive the other slider to slide upward on the guide rod until the two sliders can no longer move upward. Then, the staff puts the quilt into the bag, then puts the bag into the U-shaped plate, then passes the bag mouth part of the bag through the bottom of the baffle. Then, through the set driving component again, the driving component drives one of the sliders to move downward. Subsequently, one of the sliders will drive the baffle to move downward, and the baffle will drive the other slider to slide downward on the guide rod until the two sliders can no longer move downward. At this time, the baffle will be located between the bag mouth and the quilt, and the part of the bag close to the bag mouth will be located between the baffle and the base. At this time, the part of the bag close to the bag mouth will be located at the top of the groove and the cutting groove;

[0013] Subsequently, start the hydraulic cylinder so that the output shaft of the hydraulic cylinder drives the pressing plate to move downward. The pressing plate will enter the U-shaped plate. Subsequently, the pressing plate will contact and squeeze the bag, and the quilt in the bag will also be squeezed. Subsequently, the air in the bag will be discharged out of the bag opening. At this time, the quilt will deform under the extrusion. Under the action of the baffle, the quilt can be blocked. The distance between the bottom of the baffle and the top of the base is not enough for the quilt to pass through. The distance between the bottom of the baffle and the top of the base only allows the bag to pass through until the air in the bag located in the U-shaped plate is exhausted. Subsequently, energize and operate the heater. Subsequently, the heat generated by the heater will be delivered to the arc-shaped block and the cutting knife. Start the electric push rod so that the output shaft of the electric push rod drives the connecting plate to move downward. Subsequently, the connecting plate will drive the heater to move downward. The heater will drive the arc-shaped block and the cutting knife to move downward until the arc-shaped block and the cutting knife contact the bag. Continue to move downward. The arc-shaped block will enter the groove, and the arc-shaped block will seal the bag. Moreover, the cutting knife will enter the cutting groove. The lower end of the cutting knife is triangular in structure, and the cutting knife will generate heat, so that the bag opening can be cut off, so that there will be no redundant part at the sealed part of the bag, making it more beautiful. The cut bag will fall into the collection tank for collection.

[0014] In the above technical solution, further, the driving assembly includes:

[0015] A threaded rod, the threaded rod is rotatably installed in one of the sliding grooves. One end of the threaded rod penetrates through one of the sliders. A servo motor is fixedly installed above the threaded rod at the top of the U-shaped plate. The output end of the servo motor penetrates through the top of the U-shaped plate and extends into one of the sliding grooves, and the output end of the servo motor is coaxially connected to the threaded rod;

[0016] A guide rod, the guide rod is fixedly installed in the other sliding groove, and one end of the guide rod penetrates through the other slider.

[0017] In this technical solution, start the servo motor so that the output shaft of the servo motor drives the threaded rod to rotate forward. Under the action of the thread, the threaded rod will drive one of the sliders to move upward.

[0018] In the above technical solution, further, one of the sliders is threadedly connected to the threaded rod. The output shaft of the servo motor is rotatably connected to the top of the U-shaped plate and one of the sliding grooves. The other slider is slidably connected to the guide rod.

[0019] In this technical solution, under the action of the thread, the threaded rod will drive one of the sliders to move when it rotates; ensure that the servo motor can operate normally; ensure that the other slider can slide on the guide rod.

[0020] In the above technical solution, further, the slider and the baffle are integrally formed structures.

[0021] In this technical solution, the structure between the slider and the baffle is ensured to be stable.

[0022] In the above technical solution, further, the arc-shaped block is located between the cutting knife and the baffle.

[0023] In this technical solution, it is ensured that the bag mouth can be sealed and then cut, and the extra part after sealing can be cut off.

[0024] In the above technical solution, further, the size of the arc-shaped block is adapted to the size of the groove, and the size of the cutting knife is adapted to the size of the cutting groove.

[0025] In this technical solution, it is ensured that the arc-shaped block can enter the groove; and it is ensured that the cutting knife can enter the cutting groove.

[0026] In the above technical solution, further, a rubber pad is fixedly installed at the bottom of the pressing plate.

[0027] In this technical solution, under the action of the rubber pad, the material of the rubber pad is relatively soft, which can avoid damaging the surface of the bag.

[0028] The beneficial effects of the present utility model are:

[0029] For this vacuum packaging machine, through the cooperation among the provided chute, slider, baffle, cutting knife, cutting groove, collection groove, electric push rod, connecting plate, heater and driving component, when discharging the air in the bag containing the quilt, it can block the quilt, prevent the quilt from deforming and displacing to the position of the bag mouth during extrusion, avoid affecting the sealing of the bag. At the same time, after the sealing is completed, it can cut off the extra part of the bag mouth, making the sealed bag more beautiful. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0031] Figure 2 For the present utility model Figure 1 The enlarged schematic diagram of the structure at A in it;

[0032] Figure 3 It is a schematic diagram of the structure inside the U-shaped plate of the present utility model;

[0033] Figure 4 It is a schematic diagram of the regional structure of the connecting plate of the present utility model;

[0034] Figure 5 For the present utility model Figure 4Schematic diagram of the enlarged structure at B in the [device];

[0035] Figure 6 Schematic diagram of the regional structure of the pressing plate in the present utility model;

[0036] Figure 7 Schematic diagram of the structure of the U-shaped plate in the present utility model.

[0037] The markings in the figure are indicated as:

[0038] 1. Base; 2. L-shaped frame; 3. Hydraulic cylinder; 4. Pressing plate; 5. U-shaped plate; 6. Servo motor; 7. Baffle; 8. Connecting plate; 9. Groove; 10. Collection tank; 11. Electric push rod; 12. Slide groove; 13. Threaded rod; 14. Slide block; 15. Guide rod; 16. Heater; 17. Arc-shaped block; 18. Cutting groove; 19. Cutter. Specific implementation manner

[0039] Next, the technical solutions in the embodiments of the present application will be clearly described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art belong to the scope of protection of the present application.

[0040] In the description of the present application, it should be noted that the terms used here are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the dimensions of the various parts shown in the drawings are not drawn according to the actual proportional relationship. Technologies, methods, and devices known to those of ordinary skill in the relevant field may not be discussed in detail, but in appropriate cases, the technologies, methods, and devices should be regarded as a part of the authorization specification. In all the examples shown and discussed here, any specific value should be interpreted as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar reference numerals and letters indicate similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0041] It should be noted that in the description of the present application, the terms "first", "second", etc. in the specification and claims are used to distinguish similar objects, rather than to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are usually of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally indicates an "or" relationship between the associated objects before and after.

[0042] It should be noted that in the description of the present application, the orientation or positional relationships indicated by the orientation terms such as "front, back, up, down, left, right", "horizontal, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present application and simplifying the description. Without contrary instructions, these orientation terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present application; the orientation terms "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0043] It should be noted that in the present application, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including one..." does not exclude the existence of additional identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed. It may also include performing functions in a substantially simultaneous manner or in a reverse order according to the functions involved. For example, the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0044] Embodiment 1:

[0045] Please refer to Figure 1 - Figure 7 As shown in the figure, this embodiment provides a vacuum packaging machine, including:

[0046] Base 1, a U-shaped plate 5 is fixedly installed on the top of the base 1. Slide grooves 12 are symmetrically opened inside the U-shaped plate 5. Sliders 14 are slidably installed in both of the two slide grooves 12. A baffle 7 is fixedly installed between the two sliders 14;

[0047] A driving assembly, the driving assembly is located on the U-shaped plate 5 and is used to drive one of the sliders 14 to move upward or downward;

[0048] An electric push rod 11, the electric push rod 11 is fixedly installed on one side of the baffle 7. The output end of the electric push rod 11 is fixedly installed with a connecting plate 8. A heater 16 is fixedly installed at the bottom of the connecting plate 8. A cutter 19 and an arc-shaped block 17 are fixedly installed at the bottom of the heater 16. A groove 9 is opened at the top of the base 1 and directly below the arc-shaped block 17. A cutting groove 18 is opened at the top of the base 1 and directly below the cutter 19. A collection groove 10 is opened at the top of the base 1 and on one side of the cutting groove 18;

[0049] An L-shaped frame 2, the L-shaped frame 2 is fixedly installed on the top of the base 1 and on one side of the U-shaped plate 5. A hydraulic cylinder 3 is fixedly installed on the L-shaped frame 2. The output end of the hydraulic cylinder 3 is fixedly installed with a pressing plate 4.

[0050] Among them, first, through the set driving assembly, the driving assembly drives one of the sliders 14 to move upward. Subsequently, one of the sliders 14 will drive the baffle 7 to move upward. The baffle 7 will drive the other slider 14 to slide upward on the guide rod 15 until the two sliders 14 can no longer move upward. Then, the staff puts the quilt into the bag. Subsequently, the bag is put into the U-shaped plate 5. Subsequently, the mouth part of the bag is passed through the bottom of the baffle 7. Then, again through the set driving assembly, the driving assembly drives one of the sliders 14 to move downward. Subsequently, one of the sliders 14 will drive the baffle 7 to move downward. The baffle 7 will drive the other slider 14 to slide downward on the guide rod 15 until the two sliders 14 can no longer move downward. At this time, the baffle 7 will be located between the mouth of the bag and the quilt, and the part of the bag near the mouth will be located between the baffle 7 and the base 1. At this time, the part of the bag near the mouth will be located on the top of the groove 9 and the cutting groove 18;

[0051] Subsequently, start the hydraulic cylinder 3, so that the output shaft of the hydraulic cylinder 3 drives the pressing plate 4 to move downward. The pressing plate 4 will enter into the U-shaped plate 5. Subsequently, the pressing plate 4 will contact and squeeze the bag, and the quilt in the bag will also be squeezed. Subsequently, the air in the bag will be discharged outward from the bag opening. At this time, the quilt will be deformed under the extrusion. Under the action of the baffle 7, the quilt can be blocked. The distance between the bottom of the baffle 7 and the top of the base 1 is not enough for the quilt to pass through. The distance between the bottom of the baffle 7 and the top of the base 1 only allows the bag to pass through until the air in the bag located in the U-shaped plate 5 is exhausted. Subsequently, energize and operate the heater 16. Subsequently, the heat generated by the heater 16 will be delivered to the arc-shaped block 17 and the cutting knife 19. Start the electric push rod 11, so that the output shaft of the electric push rod 11 drives the connecting plate 8 to move downward. Subsequently, the connecting plate 8 will drive the heater 16 to move downward. The heater 16 will drive the arc-shaped block 17 and the cutting knife 19 to move downward until the arc-shaped block 17 and the cutting knife 19 contact the bag. Continuing to move downward, the arc-shaped block 17 will enter the groove 9, and the arc-shaped block 17 will seal the bag. Moreover, the cutting knife 19 will enter the cutting groove 18. The lower end of the cutting knife 19 is triangular in structure, and the cutting knife 19 will generate heat, so that the bag opening can be cut off, so that there will be no redundant part at the sealed part of the bag, making it more beautiful. The cut bag will fall into the collection tank 10 for collection.

[0052] Embodiment 2:

[0053] This embodiment provides a vacuum packaging machine. In addition to including the technical solutions of the above embodiment, it also has the following technical features. The driving assembly includes:

[0054] A threaded rod 13, the threaded rod 13 is rotatably installed in one of the sliding grooves 12. One end of the threaded rod 13 penetrates through one of the sliders 14. A servo motor 6 is fixedly installed above the threaded rod 13 at the top of the U-shaped plate 5. The output end of the servo motor 6 penetrates through the top of the U-shaped plate 5 and extends into one of the sliding grooves 12, and the output end of the servo motor 6 is coaxially connected to the threaded rod 13;

[0055] A guide rod 15, the guide rod 15 is fixedly installed in the other sliding groove 12, and one end of the guide rod 15 penetrates through the other slider 14.

[0056] Wherein, start the servo motor 6, so that the output shaft of the servo motor 6 drives the threaded rod 13 to rotate forward. Under the action of the thread, the threaded rod 13 will drive one of the sliders 14 to move upward.

[0057] Embodiment 3:

[0058] This embodiment provides a vacuum packaging machine. In addition to the technical solutions of the above embodiments, it also has the following technical features. One slider 14 is threadedly connected to the threaded rod 13. The output shaft of the servo motor 6 is rotationally connected to the top of the U-shaped plate 5 and one of the chutes 12. The other slider 14 is slidably connected to the guide rod 15.

[0059] Among them, under the action of the thread, when the threaded rod 13 rotates, it will drive one of the sliders 14 to displace; ensure that the servo motor 6 can operate normally; ensure that the other slider 14 can slide on the guide rod 15.

[0060] Embodiment 4:

[0061] This embodiment provides a vacuum packaging machine. In addition to the technical solutions of the above embodiments, it also has the following technical features. The slider 14 and the baffle 7 are of an integrally formed structure.

[0062] Among them, ensure the structural stability between the slider 14 and the baffle 7.

[0063] Embodiment 5:

[0064] This embodiment provides a vacuum packaging machine. In addition to the technical solutions of the above embodiments, it also has the following technical features. The arc-shaped block 17 is located between the cutting knife 19 and the baffle 7.

[0065] Among them, ensure that the bag mouth can be sealed before cutting it, and cut off the extra part after sealing.

[0066] Embodiment 6:

[0067] This embodiment provides a vacuum packaging machine. In addition to the technical solutions of the above embodiments, it also has the following technical features. The size of the arc-shaped block 17 is adapted to the size of the groove 9, and the size of the cutting knife 19 is adapted to the size of the cutting groove 18.

[0068] Among them, ensure that the arc-shaped block 17 can enter the groove 9; ensure that the cutting knife 19 can enter the cutting groove 18.

[0069] Embodiment 7:

[0070] This embodiment provides a vacuum packaging machine. In addition to the technical solutions of the above embodiments, it also has the following technical features. A rubber pad is fixedly installed at the bottom of the pressing plate 4.

[0071] Among them, under the action of the rubber pad, the material of the rubber pad is relatively soft, which can avoid damaging the surface of the bag.

[0072] It should be noted that the structure and principle of the heater 16 in this embodiment are both prior arts. For details, reference can be made to the comparative document (publication number: CN219838746U, patent name: A vacuum packaging machine), which will not be elaborated here.

[0073] During use, the staff first starts the servo motor 6, so that the output shaft of the servo motor 6 drives the threaded rod 13 to rotate forward. Under the action of the thread, the threaded rod 13 will drive one of the sliders 14 to move upward. Subsequently, one of the sliders 14 will drive the baffle 7 to move upward, and the baffle 7 will drive the other slider 14 to slide upward on the guide rod 15 until the two sliders 14 can no longer move upward. Then, the staff puts the quilt into the bag, then puts the bag into the U-shaped plate 5, then passes the bag mouth part of the bag through the bottom of the baffle 7, and then starts the servo motor 6 again, so that the output shaft of the servo motor 6 drives the threaded rod 13 to rotate reversely. Subsequently, the threaded rod 13 will drive one of the sliders 14 to move downward, and then one of the sliders 14 will drive the baffle 7 to move downward, and the baffle 7 will drive the other slider 14 to slide downward on the guide rod 15 until the two sliders 14 can no longer move downward. At this time, the baffle 7 will be located between the bag mouth and the quilt, and the part of the bag near the bag mouth will be located between the baffle 7 and the base 1. At this time, the part of the bag near the bag mouth will be located at the top of the groove 9 and the cut groove 18.

[0074] Subsequently, the hydraulic cylinder 3 is started, and the output shaft of the hydraulic cylinder 3 drives the pressing plate 4 to move downward. The pressing plate 4 will enter into the U-shaped plate 5. Subsequently, the rubber pad at the bottom of the pressing plate 4 will contact and squeeze the bag, and the quilt in the bag will also be squeezed. Subsequently, the air in the bag will be discharged out of the bag opening. At this time, the quilt will be deformed under the extrusion. Under the action of the baffle 7, the quilt can be blocked. The distance between the bottom of the baffle 7 and the top of the base 1 is not enough for the quilt to pass through. The distance between the bottom of the baffle 7 and the top of the base 1 only allows the bag to pass through until the air in the bag located in the U-shaped plate 5 is completely discharged. Subsequently, the heater 16 is powered on and operates. Subsequently, the heat generated by the heater 16 will be delivered to the arc-shaped block 17 and the cutting knife 19. The electric push rod 11 is started, and the output shaft of the electric push rod 11 drives the connecting plate 8 to move downward. Subsequently, the connecting plate 8 will drive the heater 16 to move downward. The heater 16 will drive the arc-shaped block 17 and the cutting knife 19 to move downward until the arc-shaped block 17 and the cutting knife 19 contact the bag. Continuing to move downward, the arc-shaped block 17 will enter the groove 9, and the arc-shaped block 17 will seal the bag. Moreover, the cutting knife 19 will enter the cutting groove 18. The lower end of the cutting knife 19 is triangular in structure, and the cutting knife 19 will generate heat, so that the bag opening can be cut off, and there will be no redundant part at the sealed part of the bag, making it more beautiful. The cut bag will fall into the collection tank 10 for collection.

[0075] The embodiments of the present application have been described above in conjunction with the accompanying drawings. Without conflict, the embodiments and the features in the embodiments in the present application can be combined with each other. The present application is not limited to the above specific embodiments. The above specific embodiments are merely illustrative and not restrictive. Under the inspiration of the present application, those of ordinary skill in the art can also make many forms without departing from the purpose of the present application and the scope protected by the claims, and all belong to the protection scope of the present application.

Claims

1. A vacuum packaging machine, characterized in that: include: A base (1), a U-shaped plate (5) is fixedly installed on the top of the base (1), a slide groove (12) is symmetrically opened in the U-shaped plate (5), a slider (14) is slidably installed in two of the slide grooves (12), and a baffle (7) is fixedly installed between the two sliders (14); A driving assembly, the driving assembly being located on the U-shaped plate (5) and being used to drive one of the sliders (14) to move upward or downward; An electric push rod (11), the electric push rod (11) is fixedly mounted on one side of the baffle (7), a connecting plate (8) is fixedly mounted on the output end of the electric push rod (11), a heater (16) is fixedly mounted on the bottom of the connecting plate (8), a cutter (19) and an arc block (17) are fixedly mounted on the bottom of the heater (16), a groove (9) is provided at the top of the base (1) and directly below the arc block (17), a cutting groove (18) is provided at the top of the base (1) and directly below the cutter (19), and a collecting groove (10) is provided at the top of the base (1) and on one side of the cutting groove (18); An L-shaped frame (2) is fixedly mounted on the top of the base (1) and located on one side of the U-shaped plate (5); a hydraulic cylinder (3) is fixedly mounted on the L-shaped frame (2); and a pressure plate (4) is fixedly mounted on the output end of the hydraulic cylinder (3).

2. A vacuum packaging machine according to claim 1, characterized in that: The drive assembly comprises: A threaded rod (13), wherein the threaded rod (13) is rotatably mounted in one of the slide grooves (12), one end of the threaded rod (13) passes through one of the sliders (14), a servo motor (6) is fixedly mounted on the top of the U-shaped plate (5) and directly above the threaded rod (13), the output end of the servo motor (6) passes through the top of the U-shaped plate (5) and extends into one of the slide grooves (12), and the output end of the servo motor (6) is coaxially connected to the threaded rod (13); A guide rod (15), wherein the guide rod (15) is fixedly installed in another slide groove (12), and one end of the guide rod (15) passes through another slide block (14).

3. A vacuum packaging machine according to claim 2, characterized in that: One of the sliders (14) is threadedly connected to the threaded rod (13), the output shaft of the servo motor (6) is rotationally connected to the top of the U-shaped plate (5) and one of the slide grooves (12), and the other slider (14) is slidably connected to the guide rod (15).

4. A vacuum packaging machine according to claim 1, characterized in that: The sliding block (14) and the baffle plate (7) are an integrally formed structure.

5. The vacuum packaging machine according to claim 1, characterized in that: The arc block (17) is located between the cutter (19) and the baffle (7).

6. A vacuum packaging machine according to claim 1, characterized in that: The size of the arc block (17) is matched with the size of the groove (9), and the size of the cutter (19) is matched with the size of the cutting groove (18).

7. The vacuum packaging machine according to claim 1, characterized in that: A rubber pad is fixedly mounted on the bottom of the pressing plate (4).

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