JP2021031179A - Reliable food vacuum packaging machine - Google Patents

Abstract

To disclose a reliable food vacuum packaging machine.SOLUTION: A reliable food vacuum packaging machine includes an outer shell, in which: a working space is installed in the outer shell; and a packaging film feeding device is installed below the working space. The packaging film feeding device includes a lower packaging film feeding roller rotatably installed between front and rear walls on the left side below the working space. According to the present invention, food can be quickly sealed and packaged, and an expiration date of food can be effectively extended by removing air from a packaging bag. It saves the trouble of manually putting food in the packaging bag and then vacuum-packing it, and also winds a packaging film that has already been used and discarded for convenience in collection and reuse, and avoids waste of resources.SELECTED DRAWING: Figure 1

Description

The present invention is related to the technical field of vacuum packaging machine, and specifically, it is a reliable food vacuum packaging machine.

Since food is altered by contact with microorganisms in the air, the expiration date of food can be effectively extended by sealing and vacuum-packing the food, and many vacuum packaging machines now put food in sealed bags. After that, the food is processed, and the opening of the packaging bag needs to be aligned with the sealing port, so packaging is limited to the size of the packaging bag, and other foods when putting the food in the packaging bag. There is a high possibility that the packaging bag will be soiled due to its own cause, which will affect the appearance. The present invention provides an apparatus capable of solving the above problems.

Chinese Patent Application Publication No. 109250189

Technical issues:
Nowadays, many vacuum packaging machines process food after putting it in a sealed bag, and packaging is limited to the size of the packaging bag because the opening of the packaging bag needs to be aligned with the sealing port. In addition, when putting food in the packaging bag, there is a high possibility that the packaging bag will be soiled due to the food itself, which will affect the appearance.

In order to solve the above problems, the present invention has designed a reliable food vacuum packaging machine. The reliable food vacuum packaging machine of the present invention includes an outer shell, an operating space is installed in the outer shell, a packaging film feeding device is installed below the working space, and the packaging film feeding device is installed. Includes a lower wrapping film feed roller rotatably installed between the left front and rear walls below the working space, and the lower wrapping film is installed so as to wrap around the outer peripheral surface of the lower wrapping film feed roller. The upper wrapping film feed roller is rotatably installed above the lower wrapping film feed roller and located between the front and rear walls of the working space, and the upper wrapping film is rotatably installed on the outer peripheral surface of the upper wrapping film feed roller. It is installed so as to wrap, a motor is fixedly installed on the right rear wall of the operating space, and a collection roller extending into the operating space is mobilably connected to the front end of the motor to transmit the collection. A waste wrapping film is installed so as to be wrapped around the outer peripheral surface of the roller, and the waste wrapping film is the lower wrapping film and the upper wrapping film recovered by using the lower wrapping film on the lower wall of the working space. A stand is fixedly installed at a position located between the film feed roller and the recovery roller, a heat seal device is installed above the stand, and the heat seal device is above the stand. A fixed wrapping film pushing block that is installed and slidable up and down is included, and the fixed wrapping film pushing block is installed so that a reserved vacant space opened at the back communicates in the vertical direction, and is installed at the rear end of the reserved vacant space. The slide wrapping film pushing block is slidably installed between the left and right walls so that the slide grooves communicate with each other at the left and right ends of the slide wrapping film pushing block on the left and right walls of the reserved empty space. A slider that is formed and can slide up and down in the slide groove is fixedly installed at a position located in the slide groove on the left and right end surfaces of the slide wrapping film push block, and the fixed wrapping film push block and the fixed wrapping film push block. The upper heat seal paper is fixedly installed on the lower end surface of the slide wrapping film pressing block, and the lower heat seal paper is fixedly installed on the upper end surface of the stand directly below the upper heat seal paper. When the fixed wrapping film pushing block and the slide wrapping film pushing block slide to the lower limit position, the upper heat seal paper and the lower wrapping paper are installed. The heat-sealing paper presses the lower packaging film and the upper packaging film to heat-seal, and an air bleeding cutting device is installed behind the packaging film feeding device and the heat-sealing device, and the air bleeding cutting device is the fixed packaging. Includes fixed blocks fixedly installed on the left and right end faces of the film pushing block, the front end face of the fixed packaging film pushing block, and the rear end face of the slide packaging film pushing block.

The blade space is installed in the fixed block so as to communicate vertically, and the blade is slidably installed in the blade space, and the blade is heat-sealed with the lower packaging film and the upper surface. It can be cut from the wrapping film, and is installed on the front wall of the working space so as to communicate with a front opening at a position located in front of the stand.

The packaging film feeding device includes a rolling space that is symmetrically and communicates with the front and rear walls of the working space and is located above the pedestal, and is a front wall or a rear wall of the rolling space. Support rods are symmetrically and rotatably installed below, and lower rollers are rotatably installed at the lower end between the adjacent front and rear support rods, and between the adjacent front and rear support rods. The upper roller is rotatably installed at the upper end of the.

A first spring is fixedly connected between one end of the support rod away from the center of symmetry and the left or right wall of the rolling space, and the lower packaging film is wound from below the lower roller. When the upper wrapping film is wound from above the front upper roller and the fixed wrapping film pushing block slides downward to push the upper wrapping film downward, the upper wrapping film drives the support rod and rolls downward. When the fixed packaging film pushing block slides upward, the support rod flips upward due to the action of the first spring to support the upper packaging film and provide convenience for taking in food.

The heat sealing device is fixedly installed on the rear end surface of the fixed wrapping film pushing block and includes a symmetrical side wrapping film pushing pad, and a hanging connecting block is fixedly mounted on the rear end surface of the slide wrapping film pushing block. It is installed so that a slide rail communicates vertically at the rear end of the hanging connecting block, a connecting rod is slidably installed in the slide rail, and the lower end of the connecting rod is on the rear side. A lower position limiting block located in the same vertical plane as the side wrapping film push pad is fixedly installed at the lower end of the connecting rod, which extends below the upper heat seal paper. A third spring is fixedly connected between the upper end surface of the position limiting block and the lower end surface of the hanging connecting block, and an intermediate packaging film push pad is fixedly installed on the lower end surface of the lower position limiting block. ing.

The upper end of the connecting rod extends above the hanging connecting block, and an upper position limiting block is fixedly installed at the upper end of the connecting rod, and the upper position limiting block and the lower position limiting block cooperate with each other. It is activated to limit the upper limit position and the lower limit position of the connecting rod.

Side connecting blocks are symmetrically and fixedly installed above the left and right end faces of the slide wrapping film push block, and the upper end faces of the left and right end faces on the rear side of the blade are fixed to the lower end faces of the side connecting block. A second spring is fixedly connected between the lower end surface of the side connecting block and the upper end surface of the fixed packaging film pushing block, and the front connecting block is connected to the middle upper end surface on the front side of the blade. Is fixedly installed, a hydraulic arm is fixedly installed on the upper end surface of the second spring and the front connecting block, and the upper end of the hydraulic arm is fixedly connected to the upper wall of the working space. ing.

The air vent cutting device includes a ventilation fan space that is installed so as to communicate with the lower center of the lower wall of the flipping space and opens to the rear, and a filter is fixedly installed at the rear end of the ventilation fan space. A fan motor is fixedly installed on the front end surface of the filter, and a fan is movably connected to the front end of the fan motor.

An air vent plate is fixedly installed on the lower wall of the flipping space at a position located in front of the ventilation fan space, and the front end of the air vent plate extends behind the fixed block on the rear side and is combined with the lower packaging film. It is located between the upper packaging film and the front end surface of the air vent plate is provided with an air vent passage that opens forward and the rear end communicates with the ventilation fan space.

A cut groove opened upward is formed at a position directly below the blade on the upper end surface of the stand.

The beneficial effect of the present invention is: The present invention can quickly seal and package food and effectively extend the best-by date of food by removing air from the packaging bag. It saves the trouble of manually putting food in a wrapping bag and then vacuum-packing it, and also wraps a wrapping film that has already been used and discarded to make it convenient for collection and reuse, and avoids wasting resources.

In order to explain in more detail the examples of the present invention or the technical ideas in the existing technology, the following is a brief introduction to the drawings necessary to explain the examples or the existing technology, and as is clear. , The following drawings are merely examples of a part of the present invention, and those skilled in the art can obtain other drawings based on these drawings without paying creative labor. The invention of the present application will be described in detail with reference to FIGS. 1 to 6 below, and in order to provide convenience in the explanation, the directions appearing in the following sentence are defined as follows: FIG. 1 is a front view of the invention of the present application, and later The directions of up, down, left, right, front and back described in the sentence coincide with the directions of up, down, left, right, front and back of the self-projection relationship in FIG.

FIG. 1 is an overall configuration diagram of the reliable food vacuum packaging machine of the present invention. FIG. 2 is a cross-sectional view taken from the “AA” direction in FIG. FIG. 3 is a cross-sectional view taken from the “BB” direction in FIG. FIG. 4 is a cross-sectional view taken from the “CC” direction in FIG. FIG. 5 is a cross-sectional view taken from the “DD” direction in FIG. FIG. 6 is an enlarged view of “E” in FIG.

The present invention relates to a reliable food vacuum packaging machine, and is mainly applied to rapidly vacuum packaging food to extend the expiration date of the food, and the present invention will be described in detail with reference to the drawings of the present invention below.

The reliable food vacuum packaging machine of the present invention includes an outer shell 11, an operating space 12 is installed in the outer shell 11, and a packaging film feeding device 101 is installed below the operating space 12. The wrapping film feeding device 101 includes a lower wrapping film feeding roller 13 rotatably installed between the front and rear walls on the lower left side of the working space 12, and the outer peripheral surface of the lower wrapping film feeding roller 13 is under-wrapped. The film 14 is installed so as to wrap around, and the upper packaging film feed roller 15 is rotatably installed above the lower packaging film feed roller 13 and located between the front and rear walls of the working space 12, and the upper package film feed roller 15 is rotatably installed. The upper packaging film 16 is installed so as to be wound around the outer peripheral surface of the packaging film feed roller 15, the motor 17 is fixedly installed on the right rear wall of the operating space 12, and the operation is performed on the front end of the motor 17. The collection rollers 18 extending into the space 12 are movably connected, and the waste wrapping film 19 is installed so as to be wrapped around the outer peripheral surface of the collection rollers 18, and the waste wrapping film 19 is used and collected. A stand 20 is fixed to the lower wrapping film 14 and the upper wrapping film 16 at a position located between the lower wrapping film feed roller 13 and the recovery roller 18 on the lower wall of the working space 12. A heat-sealing device 102 is installed above the pedestal 20, and the heat-sealing device 102 includes a fixed wrapping film pushing block 26 that is installed above the pedestal 20 and can slide up and down. A reserved vacant space 55 opened at the back is installed in the fixed wrapping film pushing block 26 so as to communicate in the vertical direction, and a slide wrapping film pushing block 27 is provided between the left and right walls at the rear end of the reserved vacant space 55. The slide wrapping film pushing block is installed so as to be slidable up and down, and slide grooves 28 are formed so as to communicate with each other at the left and right ends of the slide wrapping film pushing block 27 on the left and right walls of the reserved empty space 55. A slider 29 that can slide up and down in the slide groove 28 is fixedly installed at a position located in the slide groove 28 on both left and right end surfaces of the 27, and the fixed wrapping film push block 26 and the slide wrapping film. The upper heat seal paper 30 is fixedly installed on the lower end surface of the push block 27, and for the upper heat seal on the upper end surface of the stand 20. The lower heat seal paper 53 is fixedly installed at a position directly below the paper 30, and when the fixed wrapping film pushing block 26 and the slide wrapping film pushing block 27 slide to the lower limit position, the upper part The heat-sealing paper 30 and the lower heat-sealing paper 53 press-bond the lower packaging film 14 and the upper packaging film 16 to heat-seal, and air bleeding is cut on the rear side of the packaging film feeding device 101 and the heat-sealing device 102. The device 103 is installed, and the air vent cutting device 103 is fixedly installed on the left and right end faces of the fixed wrapping film pushing block 26, the front end surface of the fixed wrapping film pushing block 26, and the rear end surface of the slide wrapping film pushing block 26. Includes the fixed block 31.

The blade space 32 is installed in the fixed block 31 so as to communicate with each other in the vertical direction, the blade 33 is slidably installed in the blade space 32, and the blade 33 has a heat-sealed package under the blade. It can be cut from the wrapping film 14 and the upper wrapping film 16, and is installed so as to communicate with a front-opening inlet 52 at a position located in front of the pedestal 20 on the front wall of the working space 12. ing.

The packaging film feeding device 101 is installed on the front and rear walls of the operating space 12 symmetrically and communicates with each other, and includes a rolling space 21 located above the stand 20 in front of the rolling space 21. A support rod 22 is symmetrically and rotatably installed below the wall or the rear wall, and a lower roller 23 is rotatably installed and adjacent to the lower end between the support rods 22 on both front and rear sides adjacent to each other. An upper roller 24 is rotatably installed at the upper end between the support rods 22 on both front and rear sides.

The first spring 25 is fixedly connected between one end of the support rod 22 away from the center of symmetry and the left wall or the right wall of the rolling space 21, and the lower packaging film 14 is attached to the lower roller 23. When the upper wrapping film 16 wraps from below, the upper wrapping film 16 wraps from above the front upper roller 24, and the fixed wrapping film pushing block 26 slides downward to push the upper wrapping film 16 downward, the upper wrapping film 16 is said. When the support rod 22 is driven and turned downward and the fixed packaging film pushing block 26 slides upward, the support rod 22 is turned upward by the action of the first spring 25 and the upper packaging film. Supports 16 to provide convenience for food intake.

The heat sealing device 102 is fixedly installed on the rear end surface of the fixed wrapping film pushing block 26 and includes a symmetrical side wrapping film pushing pad 44, and is hung on the rear end surface of the slide wrapping film pushing block 27. 46 is fixedly installed, a slide rail 47 is installed at the rear end of the hanging connecting block 46 so as to communicate vertically, and a connecting rod 48 is slidably installed in the slide rail 47. The lower end of the connecting rod 48 extends below the upper heat-sealing paper 30 on the rear side, and the lower end of the connecting rod 48 is located in the same vertical plane as the side packaging film push pad 44. The lower position limiting block 49 is fixedly installed, and the third spring 50 is fixedly connected between the upper end surface of the lower position limiting block 49 and the lower end surface of the hanging connecting block 46, and the lower position limiting block 49 is fixedly connected. An intermediate wrapping film push pad 45 is fixedly installed on the lower end surface of the block 49.

The upper end of the connecting rod 48 extends above the hanging connecting block 46, and the upper position limiting block 51 is fixedly installed on the upper end of the connecting rod 48, and the upper position limiting block 51 and the lower position are fixedly installed. The limiting block 49 cooperates to limit the upper limit position and the lower limit position of the connecting rod 48.

Side connecting blocks 34 are symmetrically and fixedly installed above the left and right end faces of the slide wrapping film pushing block 27, and the upper end faces of the left and right end faces on the rear side of the blade 33 are below the side connecting block 34. The second spring 35 is fixedly connected to the end surface, and the second spring 35 is fixedly connected between the lower end surface of the side connecting block 34 and the upper end surface of the fixed packaging film pushing block 26, and is intermediate between the front side of the blade 33. The front connecting block 36 is fixedly installed on the upper end surface of the above, and the hydraulic arm 37 is fixedly installed on the upper end surface of the second spring 35 and the front connecting block 36, and the upper end of the hydraulic arm 37 is fixedly installed. Is fixedly connected to the upper wall of the working space 12.

The air vent cutting device 103 includes a ventilation fan space 40 which is installed so as to communicate with the lower center of the lower part of the rear wall of the inversion space 21 and opens to the rear, and a filter 41 is fixed at the rear end of the ventilation fan space 40. A fan motor 42 is fixedly installed on the front end surface of the filter 41, and a fan 43 is movably connected to the front end of the fan motor 42.

An air vent plate 38 is fixedly installed on the lower wall of the flipping space 21 at a position located in front of the ventilation fan space 40, and the front end of the air vent plate 38 extends behind the fixed block 31 on the rear side. An air vent passage 39 located between the lower packaging film 14 and the upper packaging film 16 is provided on the front end surface of the air vent plate 38 so as to open forward and the rear end communicates with the ventilation fan space 40. ing.

A cut groove 54 opened upward is formed on the upper end surface of the stand 20 at a position directly below the blade 33.

The procedure for using the reliable food vacuum packaging machine of the present invention will be described in detail with reference to FIGS. 1 to 6 below.

First, the lower rotor 23 and the upper roller 24 provide convenience for spreading the lower wrapping film 14 and the upper wrapping film 16 to put food in, the hydraulic arm 37 is in a contracted state, and the fixed wrapping film push block 26 At the upper limit position, the slide wrapping film pushing block 27 is at the upper limit position with respect to the fixed wrapping film pushing block 26, the connecting rod 48 is at the upper limit position, and the blade 33 is at the upper limit position.

At the time of operation, the food requiring packaging is placed from the intake port 52 at the center of the upper end surface of the stand 20 and between the lower packaging film 14 and the upper packaging film 16, and the hydraulic arm 37 extends long. The fixed wrapping film push block 26 and the slide wrapping film push block 27 are driven and lowered together, and the fixed wrapping film push block 26 is lowered until the lower end surface abuts on the upper end surface of the upper wrapping film 16 to lower the upper wrapping film 16. The upper wrapping film 16 drives the support rod 22 to invert downward, and the fixed wrapping film push block 26 lowers and lower wraps until the upper heat seal paper 30 comes into contact with the lower heat seal paper 53. The film 14 and the upper wrapping film 16 are crimped, and the rear side wrapping film push pad 44 and the intermediate wrapping film push pad 45 are in close contact with the air vent plate 38, and the rear lower wrapping film 14 and the upper wrapping film 16 are crimped. At this time, the fan motor 42 is activated to drive and rotate the fan 43, and the fan 43 quickly releases air between the lower packaging film 14 and the upper packaging film 16 crimped through the air vent passage 39. The hydraulic arm 37 continues to extend long and drives the slide wrapping film pushing block 27 and the blade 33 to lower the fixed wrapping film pushing block 26 together to the lower limit position, at which time the middle of the lower end of the connecting rod 48. The wrapping film push pad 45 comes into contact with the air vent plate 38, and the connecting rod 48 slides upward with respect to the slide wrapping film push block 27, the third spring 50 is in a compressed state, and the upper heat seal paper 30 and the lower heat are heated. The sealing paper 53 is heat-sealed, the lower end of the blade 33 extends into the cutting groove 54, the heat-sealed packaging bag is cut from the lower packaging film 14 and the upper packaging film 16, and the hydraulic arm 37 contracts. The fixed wrapping film push block 26 and the slide wrapping film push block 27 are driven to return to the initial state, the connecting rod 48 returns to the initial state by the elastic action of the third spring 50, and the support rod 22 is the first spring 25. The elastic action returns the lower wrapping film and the upper wrapping film 16 to the initial state in which the lower wrapping film and the upper wrapping film 16 can be unfolded again. Rotates to wrap the used portion of the lower wrapping film 14 and the upper wrapping film 16 for convenience in the next use.

The beneficial effect of the present invention is: The present invention can quickly seal and package food and effectively extend the best-by date of food by removing air from the packaging bag. It saves the trouble of manually putting food in a wrapping bag and then vacuum-packing it, and also wraps a wrapping film that has already been used and discarded to make it convenient for collection and reuse, and avoids wasting resources.

By the above method, those skilled in the art can make various changes based on the operation mode within the scope of the present invention.

Claims (10)

Including the outer shell, a working space is installed in the outer shell, a wrapping film feeding device is installed below the working space, and the wrapping film feeding device is located in the front and rear on the left side below the working space. A lower wrapping film feed roller rotatably installed between the walls is included, and the lower wrapping film is installed so as to wrap around the outer peripheral surface of the lower wrapping film feed roller, and the lower wrapping film feed roller is above the lower wrapping film feed roller. The upper wrapping film feed roller is rotatably installed at a position located between the front and rear walls of the working space, and the upper wrapping film is installed so as to wrap around the outer peripheral surface of the upper wrapping film feed roller. A motor is fixedly installed on the right rear wall of the motor, a recovery roller extending into the working space is movably connected to the front end of the motor, and a waste packaging film is placed on the outer peripheral surface of the recovery roller. The waste wrapping film installed so as to be wrapped is the lower wrapping film and the upper wrapping film recovered by using the lower wrapping film and the upper wrapping film, and between the lower wrapping film feed roller and the recovery roller on the lower wall of the working space. A pedestal is fixedly installed at the location located in, a heat-sealing device is installed above the pedestal, and the heat-sealing device is installed above the pedestal and is a fixed package that can slide up and down. The fixed wrapping film pushing block includes the film pushing block, and the reserved vacant space opened at the back is installed so as to communicate in the vertical direction, and the slide wrapping film is pushed between the left and right walls at the rear end of the reserved vacant space. The block is installed so as to be slidable up and down, and slide grooves are formed so as to communicate with each other at the left and right ends of the slide wrapping film pushing block on the left and right walls of the reserved empty space. Sliders that can slide up and down in the slide groove are fixedly installed at positions located in the slide grooves on both left and right end surfaces, and are placed on the fixed wrapping film push block and the lower end surfaces of the slide wrapping film push block. The upper heat-seal paper is fixedly installed, and the lower heat-seal paper is fixedly installed at a position directly below the upper heat-seal paper on the upper end surface of the stand, and the fixed packaging film pressing block is used. When the slide wrapping film push block slides to the lower limit position, the upper heat seal paper and the lower heat seal paper are transferred to the lower wrapping film. And heat-sealed by crimping the upper wrapping film, an air bleeding cutting device is installed behind the wrapping film feeding device and the heat sealing device, and the air bleeding cutting device is used on both left and right end surfaces of the fixed wrapping film pushing block. A reliable food vacuum packaging machine comprising a fixed block fixedly installed on the front end surface of the fixed wrapping film push block and the rear end face of the slide wrapping film push block. The blade space is installed in the fixed block so as to communicate vertically, and the blade is slidably installed in the blade space, and the blade is heat-sealed with the lower packaging film and the upper surface. Claim 1 is characterized in that it can be cut from a wrapping film and is installed so as to communicate with a front-opening inlet at a position located in front of the stand on the front wall of the working space. Reliable food vacuum packaging machine described in. The packaging film feeding device includes a rolling space that is symmetrically and communicates with the front and rear walls of the working space and is located above the pedestal, and is a front wall or a rear wall of the rolling space. Support rods are symmetrically and rotatably installed below, and lower rollers are rotatably installed at the lower end between the adjacent front and rear support rods, and between the adjacent front and rear support rods. The reliable food vacuum wrapping machine according to claim 1, wherein an upper roller is rotatably installed at the upper end of the wrapping machine. A first spring is fixedly connected between one end of the support rod away from the center of symmetry and the left or right wall of the rolling space, and the lower packaging film is wound from below the lower roller. When the upper wrapping film is wound from above the front upper roller and the fixed wrapping film pushing block slides downward to push the upper wrapping film downward, the upper wrapping film drives the support rod and rolls downward. When the fixed packaging film pushing block slides upward, the support rod flips upward due to the action of the first spring to support the upper packaging film and provide convenience for taking in food. The reliable food vacuum packaging machine according to claim 3. The heat sealing device is fixedly installed on the rear end surface of the fixed wrapping film pushing block and includes a symmetrical side wrapping film pushing pad, and a hanging connecting block is fixedly mounted on the rear end surface of the slide wrapping film pushing block. It is installed so that a slide rail communicates vertically at the rear end of the hanging connecting block, a connecting rod is slidably installed in the slide rail, and the lower end of the connecting rod is on the rear side. A lower position limiting block located in the same vertical plane as the side wrapping film push pad is fixedly installed at the lower end of the connecting rod, which extends below the upper heat seal paper. A third spring is fixedly connected between the upper end surface of the position limiting block and the lower end surface of the hanging connecting block, and an intermediate packaging film push pad is fixedly installed on the lower end surface of the lower position limiting block. The reliable food vacuum wrapping machine according to claim 1, wherein the film is provided. The upper end of the connecting rod extends above the hanging connecting block, and an upper position limiting block is fixedly installed at the upper end of the connecting rod, and the upper position limiting block and the lower position limiting block cooperate with each other. The reliable food vacuum packaging machine according to claim 5, wherein the connecting rod is operated to limit the upper limit position and the lower limit position of the connecting rod. Side connecting blocks are symmetrically and fixedly installed above the left and right end faces of the slide wrapping film push block, and the upper end faces of the left and right end faces on the rear side of the blade are fixed to the lower end faces of the side connecting block. A second spring is fixedly connected between the lower end surface of the side connecting block and the upper end surface of the fixed packaging film pushing block, and the front connecting block is connected to the middle upper end surface on the front side of the blade. Is fixedly installed, a hydraulic arm is fixedly installed on the upper end surface of the second spring and the front connecting block, and the upper end of the hydraulic arm is fixedly connected to the upper wall of the working space. The reliable food vacuum packaging machine according to claim 1, wherein the food vacuum packaging machine is characterized by the above. The air vent cutting device includes a ventilation fan space that is installed so as to communicate with the lower center of the rear wall of the flipping space and opens to the rear, and a filter is fixedly installed at the rear end of the ventilation fan space. The reliable food vacuum packaging machine according to claim 3, wherein a fan motor is fixedly installed on the front end surface of the filter, and a fan is electrically connected to the front end of the fan motor. An air vent plate is fixedly installed on the lower wall of the flipping space at a position located in front of the ventilation fan space, and the front end of the air vent plate extends behind the fixed block on the rear side and is combined with the lower packaging film. 3. A third aspect of the present invention, which is located between the upper packaging film and the front end surface of the air vent plate is provided with an air vent passage that opens forward and the rear end communicates with the ventilation fan space. Reliable food vacuum packaging machine described in. The reliable food vacuum packaging machine according to claim 1, wherein a cut groove opened upward is formed at a position directly below the blade on the upper end surface of the stand.

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