Food vacuum packaging machine

Abstract

The invention relates to the field of vacuum packaging, in particular to a food vacuum packaging machine which comprises an annular supporting plate, two supporting leg frames are arranged on the lower end face of the annular supporting plate, rotating wheel frames are rotationally arranged on the two supporting leg frames, a conveying belt is arranged on the two rotating wheel frames in a sleeving mode, a plurality of box cylinders are evenly installed on the outer side of the conveying belt, and the box cylinders are used for containing packaging bags containing food. The lower end of the box cylinder is attached to the upper end face of the annular supporting plate to slide, a middle plate frame is fixed to the middle of the annular supporting plate, a supporting mechanism is installed on the middle plate frame, and a sealing mechanism used for vacuumizing and sealing a packaging bag is installed on the supporting mechanism. The sealing mechanism comprises two symmetrically-arranged shells, heating strips are arranged in the two shells, and air exhaust cavities are formed in the positions, above the heating strips, in the two shells. The packaging bag can be continuously and automatically vacuumized and plastically sealed.

Description

Technical Field

[0001] The invention relates to the field of vacuum packaging, in particular to a food vacuum packaging machine. Background Art

[0002] After food is put into packaging bags, in order to extend the shelf life of the food, the packaging bags are generally vacuumed and then heat-pressed and sealed. When using existing vacuum packaging machines, most of them are manually taken out of the bags filled with food and placed on the packaging machine for vacuum sealing. The packaging bags cannot be vacuumed and sealed continuously and automatically, which affects the packaging and sealing efficiency. Summary of the invention

[0003] The purpose of the present invention is to provide a food vacuum packaging machine which can continuously and automatically vacuum-seal packaging bags.

[0004] The purpose of the present invention is achieved through the following technical solutions:

[0005] A food vacuum packaging machine comprises an annular support plate with two leg frames on the lower end surface, rotating wheel frames are rotatably mounted on the two leg frames, a conveyor belt is sleeved on the two rotating wheel frames, a plurality of box barrels are evenly mounted on the outer side of the conveyor belt, the box barrels are used to place packaging bags containing food, the lower ends of the box barrels are slidably attached to the upper end surface of the annular support plate, a middle plate frame is fixed in the middle of the annular support plate, a supporting mechanism is mounted on the middle plate frame, and a sealing mechanism for vacuuming and sealing the packaging bags is mounted on the supporting mechanism;

[0006] The sealing mechanism comprises two symmetrically arranged shells, heating strips are arranged in the two shells, and air extraction cavities are arranged above the heating strips in the two shells.

[0007] A penetration plate is fixed to the upper end of one of the shells, and a strut frame is fixed to the upper end of the other shell. The strut frame slides through the penetration plate, and a spring is arranged between the strut frame and the penetration plate to make the two shells elastically matched.

[0008] The lower ends of the two shells are both provided with flat plates, and the two flat plates are both provided with grooves at the ends close to the box barrel, so that the packaging bag in the box barrel can automatically slide into between the two flat plates.

[0009] The upper sides of the two flat plates with the bevel ends are both provided with triangular plates, so that the poured packaging bag can stand upright and keep this state to enter between the two shells.

[0010] A plurality of mounting seats are evenly fixed on the outer side of the conveyor belt, and a plurality of box barrels are detachably mounted and fixed on the plurality of mounting seats.

[0011] The support mechanism comprises a track seat which penetrates and slides on the middle plate frame, the track seat is connected with an arm seat, and one shell is fixed on the arm seat.

[0012] A threaded rod is fixed at the middle part of the lower end of the track seat, a threaded sleeve is threadedly connected to the threaded rod, and the threaded sleeve rotates on the middle plate frame.

[0013] An adjusting transverse screw is rotatably arranged on the track seat, and the adjusting transverse screw is threadedly connected with the support arm seat.

[0014] Relative to the moving direction of the box tube along the conveyor belt, an opening is provided on the rear annular support plate of the sealing mechanism, so that the packaging bags in the box tube moved to this opening can automatically fall out.

[0015] A horizontal axis is rotated on the leg frame near the opening end, a buffer plate is fixed on the horizontal axis, a connecting arm is arranged on the horizontal axis, and a tension spring is arranged between the connecting arm and the corresponding leg frame, so that the buffer plate is horizontally located below the opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 and Figure 2 It is a schematic diagram of the structure of a food vacuum packaging machine;

[0017] Figure 3 It is a structural schematic diagram of the annular support plate;

[0018] Figure 4 It is a schematic diagram of the structure of the rotating wheel frame, the conveyor belt, the mounting seat and the box barrel;

[0019] Figure 5 yes Figure 4 Schematic diagram of the local structure;

[0020] Figure 6 It is a schematic diagram of the sealing mechanism and the supporting mechanism structure;

[0021] Figure 7 and Figure 8 It is a schematic diagram of the structure of the shell;

[0022] Fig. 9 It is a structural diagram of the horizontal axis and buffer plate.

[0023] In the figure:

[0024] Annular support plate 101; leg support frame 102; middle plate frame 103; opening 104;

[0025] Rotating wheel frame 201; conveyor belt 202; mounting seat 203; box barrel 204;

[0026] Track seat 301; threaded rod 302; threaded sleeve 303; arm seat 304; adjusting horizontal screw 305;

[0027] Shell 401; flat plate 402; triangular plate 403; air extraction chamber 404; heating strip 405; through plate 406; sliding column frame 407; spring 408;

[0028] Horizontal axis 501 ; buffer plate 502 ; connecting arm 503 ; tension spring 504 . DETAILED DESCRIPTION

[0029] like Figure 1-9 As shown, a detailed description of the food vacuum packaging machine:

[0030] A food vacuum packaging machine comprises an annular support plate 101 with two leg frames 102 on the lower end surface, a rotating wheel frame 201 is rotatably mounted on the two leg frames 102, a conveyor belt 202 is sleeved on the two rotating wheel frames 201, a plurality of box barrels 204 are evenly mounted on the outer side of the conveyor belt 202, the box barrels 204 are used to place packaging bags containing food, the lower ends of the box barrels 204 are slidably attached to the upper end surface of the annular support plate 101, a middle plate frame 103 is fixed in the middle of the annular support plate 101, a supporting mechanism is mounted on the middle plate frame 103, and a sealing mechanism for vacuumizing and sealing the packaging bags is mounted on the supporting mechanism;

[0031] The sealing mechanism includes two symmetrically arranged shells 401 , each of which is provided with a heating strip 405 , and each of which is provided with an air extraction cavity 404 above the heating strip 405 in the two shells 401 .

[0032] A through plate 406 is fixed to the upper end of one of the housings 401 , and a strut holder 407 is fixed to the upper end of the other housing 401 . The strut holder 407 slides through the through plate 406 , and a spring 408 is provided between the strut holder 407 and the through plate 406 , so that the two housings 401 are elastically matched.

[0033] When in use, the motor installed on one of the leg frames 102 drives the rotating wheel frame 201, so that the rotating wheel frame 201 drives the conveyor belt 202 to rotate intermittently, and then multiple box barrels 204 are intermittently passed through the sealing mechanism in sequence, wherein the box barrel 204 is used to place the packaging bag of the food, and the bag mouth of the packaging bag is higher than the upper end of the box barrel 204, so that when the box barrel 204 moves to the sealing mechanism, the bag body higher than the upper end of the box barrel 204 will overcome the elastic force of the spring 408 and slide between the two shells 401, and be heated by the heating strips 408 in the two shells 401. 05 clamped, at the same time, the bag mouth is located between the two vacuum chambers 404, at this time, the conveyor belt 202 stops rotating, the suction pump on the vacuum chamber 404 is started, and the vacuum chamber 404 is connected with the bag mouth to form a vacuum on the packaging bag, and after the vacuum is completed, the two heating strips 405 start heating to melt the bag body between the two and complete the vacuum sealing, and then the conveyor belt 202 is started again, so that the next box tube 204 carries the packaging bag into between the two shells 401, and the above steps are repeated again, thereby forming a continuous and automatic vacuum sealing of food packaging.

[0034] like Figure 6-8 As shown:

[0035] A flat plate 402 is provided at the lower end of the two shells 401 , and a groove is provided at the end of the two flat plates 402 close to the box tube 204 , so that the packaging bag in the box tube 204 can slide automatically between the two flat plates 402 .

[0036] In order to facilitate the packaging bag carried by the box tube 204 to slide smoothly between the two shells 401, two flat plates 402 are provided. When the box tube 204 carrying the packaging bag slides to the opposite grooves of the two flat plates 402, the bag body at the upper end of the box tube 204 is guided by the two grooves to slide between the two flat plates 402 and then into the shells 401;

[0037] The grooves of the two flat plates 402 protrude from the shell 401, so that the packaging bag first slides between the two flat plates 402, and then moves with the box tube 204 and slides between the two shells 401;

[0038] At the same time, the lower end surfaces of the two flat plates 402 are in the same plane with the upper end of the box tube 204, so that when the box tube 204 slides to the two flat plates 402, the box tube 204 and the two flat plates 402 are in sliding contact, so that the root of the part of the packaging bag that does not contain food slides between the two flat plates 402, further ensuring that the packaging bag can slide between the two flat plates 402; moreover, it can also level the food in the packaging bag, ensuring that the food after plastic sealing is in a flat and regular shape.

[0039] Further:

[0040] The upper sides of the two flat plates 402 with the beveled ends are both provided with triangular plates 403 to enable the inverted packaging bag to stand upright and maintain this state to enter between the two shells 401.

[0041] When the packaging bag slides between the two flat plates 402, the packaging bag above the flat plates 402 may still be in a tilted state. The packaging bag in this state is not easy to slide between the two shells 401. Even if it slides between the two shells 401, the vacuuming will be affected due to the packaging bag being in a folded state. Therefore, a triangular plate 403 is provided. Through the hypotenuse of the triangular plate 403, the inclined packaging bag can be guided to an upright state as the packaging bag moves, and this state is maintained by being clamped by the two triangular plates 403 until it slides between the two shells 401, thereby ensuring that the packaging bag slides between the two shells 401 in an upright, aligned and unfolded state, ensuring that the bag opening is aligned with the vacuum chamber 404, and completing the vacuuming, heating and sealing.

[0042] like Figure 4-5 As shown:

[0043] A plurality of mounting seats 203 are evenly fixed on the outer side of the conveyor belt 202 , and a plurality of box barrels 204 are detachably mounted and fixed on the plurality of mounting seats 203 .

[0044] Through the detachable installation arrangement of the mounting seat 203 and the box barrel 204, the box barrel 204 can be replaced, so that the vacuum packaging machine can adapt to the vacuum packaging of packaging bags of different shapes and sizes;

[0045] It should be noted that, generally, the shape and size of the vacuum packaging bag need to correspond to the shape and size of the box tube 204, so as to ensure that the food after vacuum sealing is in a regular shape.

[0046] like Figure 6 As shown:

[0047] The support mechanism includes a rail seat 301 that penetrates and slides on the middle plate frame 103 , and an arm seat 304 is connected to the rail seat 301 , and a shell 401 is fixed on the arm seat 304 .

[0048] A threaded rod 302 is fixed to the middle of the lower end of the rail seat 301 , and a threaded sleeve 303 is threadedly connected to the threaded rod 302 , and the threaded sleeve 303 rotates on the middle plate frame 103 .

[0049] An adjusting horizontal screw 305 is rotatably mounted on the track seat 301 , and the adjusting horizontal screw 305 is threadedly connected to the support arm seat 304 .

[0050] By rotating the threaded sleeve 303, the threaded rod 302 can be threadedly driven to move up and down, and then the sealing mechanism is driven to move up and down through the track seat and the arm seat 304, so as to adapt to the sealing of the box tube 204 of different heights;

[0051] By rotating the adjusting horizontal screw 305, the arm seat 304 can be threadedly driven to move horizontally on the track seat 301, thereby driving the sealing mechanism to move horizontally, so that the gap between the two shells 401 of the sealing mechanism corresponds to the middle position of the box barrel 204 of different sizes, ensuring the sealing quality.

[0052] like Fig. 9 As shown:

[0053] Relative to the moving direction of the box barrel 204 along the conveyor belt 202, an opening 104 is provided on the rear annular support plate 101 of the sealing mechanism, so that the packaging bags in the box barrel 204 moved thereto can automatically fall out.

[0054] When the box barrel 204 contains packaging bags containing food, the support plate 101 supports the lower end of the packaging bags. When the box barrel 204 carries the packaging bags and moves to the opening 104, the packaging bags that have been sealed by the sealing mechanism will be affected by their own gravity and automatically slide down and fall in the box barrel 204, providing space for the next placement of packaging bags, thereby ensuring continuous operation of the packaging machine.

[0055] Further:

[0056] A horizontal axis 501 is rotated on the leg frame 102 near the opening 104 end, a buffer plate 502 is fixed on the horizontal axis 501, a connecting arm 503 is provided on the horizontal axis 501, and a tension spring 504 is provided between the connecting arm 503 and the corresponding leg frame 102, so that the buffer plate 502 is located below the opening 104 in a horizontal state.

[0057] In order to prevent the vacuum-sealed packaging bag from falling directly to the ground and causing damage to the packaging, a buffer plate 502 is provided to support the packaging bag. The buffer plate 502 is affected by the gravity of the packaging bag, which will drive the horizontal axis 501 to rotate, thereby pulling the tension spring 504 through the connecting arm 503, so that the buffer plate 502 slowly rotates to an inclined state, causing the packaging bag to slowly slide along the buffer plate 502, thereby achieving the purpose of buffering the falling of the packaging bag and preventing the packaging bag from falling directly to the ground and causing damage to the packaging.

Claims

1. A food vacuum packaging machine, characterized in that: It comprises an annular support plate (101) with two leg frames (102) on the lower end surface, the two leg frames (102) are both rotatably provided with rotating wheel frames (201), the two rotating wheel frames (201) are sleeved with conveyor belts (202), a plurality of box barrels (204) are evenly installed on the outer side of the conveyor belt (202), the box barrels (204) are used to place packaging bags containing food, the lower ends of the box barrels (204) are slidably attached to the upper end surface of the annular support plate (101), a middle plate frame (103) is fixed in the middle of the annular support plate (101), a supporting mechanism is installed on the middle plate frame (103), and a sealing mechanism for vacuumizing and sealing the packaging bags is installed on the supporting mechanism; The sealing mechanism comprises two symmetrically arranged shells (401), each of the two shells (401) is provided with a heating strip (405), and each of the two shells (401) is provided with an air extraction cavity (404) above the heating strip (405).

2. A food vacuum packaging machine according to claim 1, characterized in that: A through plate (406) is fixed to the upper end of one of the housings (401), and a sliding column frame (407) is fixed to the upper end of the other housing (401). The sliding column frame (407) slides through the through plate (406), and a spring (408) is provided between the sliding column frame (407) and the through plate (406) so that the two housings (401) are elastically matched.

3. A food vacuum packaging machine according to claim 2, characterized in that: The lower ends of the two shells (401) are both provided with flat plates (402), and the ends of the two flat plates (402) close to the box tube (204) are both provided with grooves to facilitate the packaging bag in the box tube (204) to automatically slide between the two flat plates (402).

4. A food vacuum packaging machine according to claim 3, characterized in that: The upper sides of the two flat plates (402) with the beveled ends are both provided with triangular plates (403) so that the inverted packaging bag can stand upright and keep this state to enter between the two shells (401).

5. The food vacuum packaging machine according to claim 1, characterized in that: A plurality of mounting seats (203) are evenly fixed on the outer side of the conveyor belt (202), and a plurality of box barrels (204) are respectively detachably mounted and fixed on the plurality of mounting seats (203).

6. A food vacuum packaging machine according to claim 5, characterized in that: The support mechanism comprises a track seat (301) that penetrates and slides on the middle plate frame (103), the track seat (301) is connected to an arm seat (304), and a shell (401) is fixed on the arm seat (304).

7. A food vacuum packaging machine according to claim 6, characterized in that: A threaded rod (302) is fixed to the middle of the lower end of the track seat (301), a threaded sleeve (303) is threadedly connected to the threaded rod (302), and the threaded sleeve (303) is rotated on the middle plate frame (103).

8. The food vacuum packaging machine according to claim 6, characterized in that: An adjusting transverse screw (305) is rotatably mounted on the track seat (301), and the adjusting transverse screw (305) is threadedly connected to the support arm seat (304).

9. The food vacuum packaging machine according to claim 1, characterized in that: Relative to the moving direction of the box barrel (204) along the conveyor belt (202), an opening (104) is provided on the rear annular support plate (101) of the sealing mechanism, so that the packaging bags in the box barrel (204) moved thereto can automatically fall out.

10. A food vacuum packaging machine according to claim 9, characterized in that: A horizontal axis (501) is rotatably mounted on the leg support frame (102) near the end of the opening (104), a buffer plate (502) is fixed on the horizontal axis (501), a connecting arm (503) is arranged on the horizontal axis (501), and a tension spring (504) is arranged between the connecting arm (503) and the corresponding leg support frame (102), so that the buffer plate (502) is located below the opening (104) in a horizontal state.

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