Food packaging machine and packaging method

Abstract

The invention relates to the field of food packaging, and discloses a food packaging machine and a packaging method.The food packaging machine comprises a working bin, a rotating shaft, a conveying belt and a discharging port; the protective locking unit is arranged in the working bin; the number of the rotating shafts is two, and the rotating shafts are symmetrically and rotationally arranged in the working bin. The conveying belt is connected to the rotating shaft in a sleeving mode, the driving assembly drives the sealing assembly to descend, meanwhile, the protection assembly can descend at the same time and move outwards, and in this way, the situation that when people still place food packaging bags, a conveying switch of the conveying belt is touched by mistake is avoided; a worker cannot pull out arms in time, the sealing assembly presses the worker, the worker can be in contact with the worker when the worker moves outwards through the protection assembly, the arms of the worker make contact with the protection assembly, the protection assembly can lock the driving assembly immediately, the sealing assembly is prevented from continuing to descend, and the safety of the worker is guaranteed.

Description

Technical Field

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

[0002] Food packaging machines are key equipment in the modern food industry. They can automatically complete food filling, wrapping and sealing processes to ensure the freshness and safety of food.

[0003] The food packaging bag sealing device disclosed in Patent No. CN113619879A includes a first cylinder and a supporting plate, and also includes a support frame, a linkage component, a dustproof plate, a positioning block, a limiting groove, a clamping component, a U-shaped support platform and a cleaning component. The support frame is arranged on the supporting plate, and first card slots are provided on both sides of the support frame. A cross bar is provided in the middle of the support frame, and the two ends of the cross bar pass through the two first card slots respectively, and the cross bar is fixed on the support frame, and a limiting groove is provided in the middle of the cross bar. The inner wall of the limiting groove is also provided with a first slide rail, the positioning block is fixed on the cross bar, and the first cylinder is fixed on the positioning block. The cooperation of the linkage component and the clamping component prevents the device from accumulating food at the sealing position to cause loose packaging when sealing. The setting of the cleaning component prevents the quality of fresh food from being affected during subsequent packaging. In the prior art, the linkage components and the clamping components are coordinated to prevent the food from piling up at the sealing portion and causing loose packaging when the device is sealing. However, when the food packaging bag is sealed, it will be placed by the staff. When placing it, if the person next to him operates faster and presses the switch of the sealing device first, the person who operates slower on the other side will not be able to withdraw his hand in time, causing the sealing device to injure people and cause safety accidents. Summary of the Invention

[0004] The purpose of the present invention is to provide a food packaging machine and packaging method to solve the following technical problems: The person who places the device faster will press the switch of the sealing device first, which will cause the person who operates slower on the other side to be unable to withdraw his hand in time, causing the sealing device to injure people and cause safety accidents.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A food packaging machine comprises a working chamber, a rotating shaft, a conveyor belt and a material discharge port; and further comprises a protective locking unit arranged in the working chamber; There are two rotating shafts, which are symmetrically rotated in the working chamber; The conveyor belt is sleeved on the rotating shaft; The discharge port is opened at one end of the working bin; The protection locking unit is arranged on the working chamber, and includes a driving assembly, a sealing assembly, a protection assembly and a toggle assembly; the driving assembly drives the sealing assembly to rise and fall; the driving assembly drives the protection assembly to move; the rotating shaft drives the toggle assembly to move; After the food packaging bag is put on, it is placed on the conveyor belt on the working bin, and then the conveyor belt sends the food packaging bag to the bottom of the sealing assembly. The driving assembly allows the sealing assembly to descend and the protective assembly to move, and the food packaging bag is sealed and protected during the sealing process. After the food packaging bag is sealed, it is sent to the discharge port by the conveyor belt, and the rotating shaft drives the toggling assembly to move to toggle the food packaging bag.

[0006] Furthermore, the driving assembly includes a support platform, a support block, a lifting motor and a driving screw; The sealing assembly includes a lifting block, a lifting platform, a fixing column and a sealer; The support platforms are provided with two and are symmetrically fixed on both sides of the working chamber; the support block is fixedly provided on the top of the support platform; the drive screw is rotatably provided on the support platform and is located beside the support block; the lifting motor is fixedly provided at the bottom of the support platform, and the lifting motor is connected to the drive screw; The lifting block is slidably arranged on the supporting block, and one end of the lifting block is rotatably connected to the driving screw; the lifting platform is fixedly arranged at one end of the lifting block; the sealer is fixedly arranged at the bottom of the lifting platform; the fixed column is fixedly arranged in the supporting block, and the fixed column passes through the lifting block.

[0007] Furthermore, the driving assembly includes a connecting block, a connecting shaft, a connecting gear, a transmission gear and a fixed gear plate; The protection assembly includes a pushing tooth plate, a safety plate and a fixing frame; The connecting block is fixedly arranged on one side of the lifting block; the connecting shaft is rotatably arranged on the connecting block; the connecting gear is fixedly arranged on one end of the connecting shaft; the transmission gear is fixedly arranged on the other end of the connecting shaft; the fixed tooth plate is fixedly arranged on the supporting block, and the fixed tooth plate is engaged with the connecting gear; The pushing tooth plate is slidably arranged on the lifting block, and the pushing tooth plate is engaged with the transmission gear; the fixing frame is fixedly arranged at one end of the pushing tooth plate; and the safety plate is slidably arranged in the fixing frame.

[0008] Furthermore, the protection assembly further includes a limiting groove, a pressing spring, a brake and a pressing block; Among them, the limiting groove is fixedly arranged on one side of the lifting block; the brake is slidably arranged in the limiting groove, and the brake passes through the lifting block; the pressing spring is fixedly arranged in the limiting groove, and the other end of the pressing spring is fixedly connected to the brake; the pressing block is fixedly arranged on the safety plate.

[0009] Furthermore, the toggle assembly includes a rotating screw, a toggle plate, a limiting column, a push spring, a rotating gear and a half-tooth gear; Among them, the half-tooth gear is fixedly arranged on the rotating shaft; the rotating screw is rotatably arranged in the working chamber; the rotating gear is fixedly arranged on the rotating screw, and the half-tooth gear is engaged with the rotating gear; the toggle plate is rotatably arranged on the rotating screw; the push spring is sleeved on the rotating screw, and the two ends of the push spring are respectively fixedly connected to the working chamber and the toggle rod; the limiting column is fixedly arranged in the working chamber, and the limiting column passes through the toggle plate.

[0010] Furthermore, a placement block is fixedly connected to the conveyor belt; a plurality of the placement blocks are provided and are evenly and equidistantly arranged on the conveyor belt; a pressing clamp is rotatably connected to the placement block.

[0011] Furthermore, a transmission motor is fixedly connected to one side of the working chamber, and the transmission motor is communicated with the rotating shaft; a transmission wheel is fixedly connected to the rotating shaft; and a belt is sleeved on the transmission wheel.

[0012] A food packaging method, the packaging method comprising the following steps: S1: The staff places the packaging bag containing food on the conveyor belt in the working chamber, and then the conveyor belt transports the packaging bag to the bottom of the sealer; S2: While the conveyor belt is transporting the packaging bag, the driving screw will also drive the lifting block and the lifting platform to move downward, allowing the sealer on the lifting platform to slowly approach the packaging bag on the conveyor belt. When the packaging bag moves below the sealer and the conveyor belt stops moving, the driving screw will make the sealer continue to move downward, so that the sealer can seal the packaging bag on the conveyor belt; S3: After the sealing is completed, the conveyor belt continues to move, allowing the packaging bags on the conveyor belt to move to the discharge port of the working bin, and allowing the packaging bags containing food to be sent out through the discharge port on the working bin.

[0013] Beneficial effects of the present invention: (1) When the driving component drives the sealing component to descend, the protective component will also descend and move outward. This setting is to prevent the staff from accidentally touching the conveyor belt's transmission switch while the staff is still placing food packaging bags. The staff cannot pull out their arms in time, causing the sealing component to crush the staff. The protective component will move outward and will first touch the staff. When the staff's arm touches the protective component, the protective component will immediately lock the driving component to prevent the sealing component from continuing to descend, ensuring the safety of the staff. (2) After the conveyor belt delivers the food-containing packaging bag to the bottom of the sealing assembly, it stops moving. The sealing assembly will continue to descend and seal the packaging bag on the conveyor belt. This setting is to allow multiple food packaging bags to be sealed at the same time, without having to seal them one by one, which is more cumbersome; (3) After the food packaging bags on the conveyor belt are sealed, the conveyor belt will start again and continue to push the packaging bags containing food forward and send them to the discharge port of the working bin. Because food packaging is relatively fluffy and swollen, when a large number of them are sent to the discharge port, they will be squeezed together and unable to pass through the discharge port. Therefore, the components are moved to shuffle the packaging bags containing food so that they can all pass through the discharge port and proceed to the next step of packaging processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings.

[0015] Figure 1 A top perspective view of the packaging machine of the present invention; Figure 2 is a cross-sectional view of the working chamber of the present invention; Figure 3 A perspective view of a conveyor belt according to the present invention; Figure 4 is a three-dimensional diagram of the sealing assembly of the present invention; Figure 5 is a perspective view of the protective component of the present invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 A perspective view of the toggle assembly of the present invention; Figure 8 It is a bottom perspective view of the packaging machine of the present invention.

[0016] Description of the drawings: 1. Working chamber; 2. Rotating gear; 3. Half-tooth gear; 4. Support platform; 5. Lifting motor; 6. Conveying motor; 7. Rotating shaft; 8. Conveyor belt; 9. Pressing clamp; 10. Placing block; 11. Supporting block; 12. Driving screw; 13. Lifting block; 14. Safety plate; 15. Fixed frame; 16. Connecting gear; 17. Connecting shaft; 18. Transmission gear; 19. Connecting block; 20. Fixed tooth plate; 21. Fixed column; 22. Pushing tooth plate; 23. Lifting platform; 24. Transmission wheel; 25. Belt; 26. Discharge port; 27. Limiting column; 28. Toggle plate; 29. ​​Rotating screw; 30. Sealer; 31. Pushing spring; 32. Pressing block; 33. Limiting groove; 34. Pressing spring; 35. Brake; 36. Sealing assembly; 37. Protective assembly; 38. Toggle assembly. DETAILED DESCRIPTION

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0018] See also Figures 1-8 As shown, the present invention is a food packaging machine, comprising a working chamber 1, a rotating shaft 7, a conveyor belt 8 and a discharge port 26; and further comprising a protective locking unit arranged in the working chamber 1; There are two rotating shafts 7, which are symmetrically rotated in the working chamber 1; The conveyor belt 8 is sleeved on the rotating shaft 7; The discharge port 26 is opened at one end of the working chamber 1; The protection locking unit is provided on the working chamber 1 and includes a driving assembly, a sealing assembly 36, a protection assembly 37 and a toggle assembly 38; the driving assembly drives the sealing assembly 36 to rise and fall; the driving assembly drives the protection assembly 37 to move; the rotating shaft 7 drives the toggle assembly 38 to move; After the food packaging bag is put on, it is placed on the conveyor belt 8 on the working chamber 1, and then the conveyor belt 8 sends the food packaging bag to the bottom of the sealing component 36. The driving component causes the sealing component 36 to descend and the protective component 37 to move to seal the food packaging bag and protect it during the sealing process. After the food packaging bag is sealed, it is sent to the discharge port 26 by the conveyor belt 8. The rotating shaft 7 drives the toggling component 38 to move to toggle the food packaging bag. The staff puts the food into the packaging bag and then places it on the conveyor belt 8 of the working warehouse 1 in turn. The rotating shaft 7 rotates to drive the conveyor belt 8 to move and move the packaging bags on the conveyor belt 8 to the bottom of the sealing assembly 36. At this time, the driving assembly drives the sealing assembly 36 to descend. When the driving assembly drives the sealing assembly 36 to descend, it also causes the protective assembly 37 to descend at the same time and move the protective assembly 37 outward. This is designed to prevent the staff from accidentally touching the conveying switch of the conveyor belt 8 when the staff is still placing the food packaging bag. The staff cannot pull out their arms in time, causing the sealing assembly 36 to crush the staff. The outward movement of the protective assembly 37 will first contact the staff. When the staff's arm contacts the protective assembly 37, the protective assembly 37 will immediately lock the driving assembly to prevent the sealing assembly 36 from continuing to descend, thereby ensuring the safety of the staff. After the conveyor belt 8 delivers the packaging bag containing food to the bottom of the sealing assembly 36, it stops moving. The sealing assembly 36 will continue to descend and seal the packaging bag on the conveyor belt 8. This arrangement is to allow multiple packaging bags containing food to be sealed at the same time, without having to seal them one by one, which is more cumbersome. After the food packaging bags on the conveyor belt 8 are sealed, the conveyor belt 8 will start again to push the packaging bags containing food forward and send them all to the discharge port 26 of the working bin 1. Because food packaging is relatively fluffy and swollen, when a large number of them are sent to the discharge port 26, they will be squeezed together and unable to pass through the discharge port 26. Therefore, the toggle component 38 is moved to shuffle the packaging bags containing food so that they can all pass through the discharge port 26 and then proceed to the next step of packaging processing.

[0019] See also Figure 1 、 Figure 2 、 Figure 4 and Figure 8 As shown, the driving assembly includes a support platform 4, a support block 11, a lifting motor 5 and a driving screw 12; The sealing assembly 36 includes a lifting block 13, a lifting platform 23, a fixing column 21 and a sealer 30; Among them, the support platforms 4 are provided with two and are symmetrically fixed on both sides of the working chamber 1; the support block 11 is fixedly provided on the top of the support platform 4; the drive screw 12 is rotatably provided on the support platform 4 and is located beside the support block 11; the lifting motor 5 is fixedly provided at the bottom of the support platform 4, and the lifting motor 5 is connected to the drive screw 12; The lifting block 13 is slidably disposed on the support block 11, and one end of the lifting block 13 is rotatably connected to the driving screw 12; the lifting platform 23 is fixedly disposed at one end of the lifting block 13; the sealer 30 is fixedly disposed at the bottom of the lifting platform 23; the fixing column 21 is fixedly disposed in the support block 11, and the fixing column 21 passes through the lifting block 13; The driving screw 12 is driven by the lifting motor 5 on the support platform 4 to rotate, and the rotating driving screw 12 drives the lifting block 13 in the support block 11 to move up and down. The lifting block 13 will make the lifting platform 23 and the sealer 30 at the bottom of the lifting platform 23 move downward or upward, thereby sealing the packaging bag containing food placed on the conveyor belt 8. The fixed column 21 is provided in the support block 11 to prevent the lifting block 13 from arbitrarily deflecting with the driving screw 12 when the driving screw 12 drives the lifting block 13 to rise or fall. Therefore, the lifting block 13 can only rise or fall due to the restriction of the fixed column 21.

[0020] See also Figure 1 、 Figure 2 and Figure 5 As shown, the driving assembly includes a connecting block 19, a connecting shaft 17, a connecting gear 16, a transmission gear 18 and a fixed gear plate 20; The protection assembly 37 includes a pushing tooth plate 22, a safety plate 14 and a fixing frame 15; The connecting block 19 is fixedly provided on one side of the lifting block 13; the connecting shaft 17 is rotatably provided on the connecting block 19; the connecting gear 16 is fixedly provided on one end of the connecting shaft 17; the transmission gear 18 is fixedly provided on the other end of the connecting shaft 17; the fixed tooth plate 20 is fixedly provided on the supporting block 11, and the fixed tooth plate 20 is engaged with the connecting gear 16; The pushing tooth plate 22 is slidably disposed on the lifting block 13, and the pushing tooth plate 22 is engaged with the transmission gear 18; the fixing frame 15 is fixedly disposed at one end of the pushing tooth plate 22; the safety plate 14 is slidably disposed in the fixing frame 15; When the lifting block 13 rises or falls, the connecting gear 16 on the connecting block 19 will engage with the fixed tooth plate 20, so that the connecting gear 16 will drive the connecting shaft 17 and the transmission gear 18 to rotate, and the rotating transmission gear 18 will cause the pushing tooth plate 22 on the lifting block 13 to move forward or backward. The pushing tooth plate 22 moving forward or backward will push the safety plate 14 and the fixed frame 15 outward. This arrangement is so that when the staff is placing the packaging bags filled with food, the safety plate 14 is in contact with the lifting platform 23 and will not hinder the staff from placing them. When the conveyor belt 8 starts transportation, the safety plate 14 moves outward for protection.

[0021] See also Figure 5 and Figure 6 As shown, the protection assembly 37 further includes a limiting groove 33, a pressing spring 34, a brake 35 and a pressing block 32; The limiting groove 33 is fixedly provided on one side of the lifting block 13; the brake 35 is slidably provided in the limiting groove 33, and the brake 35 passes through the lifting block 13; the pressing spring 34 is fixedly provided in the limiting groove 33, and the other end of the pressing spring 34 is fixedly connected to the brake 35; the pressing block 32 is fixedly provided on the safety plate 14; If the staff does not withdraw the arm in time, the arm will lift the safety plate 14, and the pressing block 32 on the safety plate 14 will disengage from the limiting groove 33, so that the pressing spring 34 will push the brake 35 to slide outward. The other end of the brake 35 is the driving screw 12, so when the brake 35 slides outward from the limiting groove 33, it will contact the driving screw 12 and limit the rotation of the driving screw 12, so that the driving screw 12 will no longer descend with the lifting block 13, and the lifting platform 23 and the sealer 30 will no longer move downward. When the staff's arm does not touch the safety plate 14, the safety plate 14's own gravity will cause the pressing block 32 to move downward, thereby squeezing the brake 35 in the limiting groove 33. The brake 35 is set to a trapezoidal surface below the pressing block 32, so that when the pressing block 32 moves downward, it will press the brake 35 to move into the limiting groove 33. The moving brake 35 will also compress the pressing spring 34 in the limiting groove 33, so that the brake 35 will move away from the drive screw 12 so that the drive screw 12 can rotate normally.

[0022] See also Figure 1 、 Figure 2 、 Figure 7 and Figure 8 As shown, the toggle assembly 38 includes a rotating screw 29, a toggle plate 28, a limiting column 27, a push spring 31, a rotating gear 2 and a half-tooth gear 3; The half-toothed gear 3 is fixedly mounted on the rotating shaft 7; the rotating screw 29 is rotatably mounted in the working chamber 1; the rotating gear 2 is fixedly mounted on the rotating screw 29, and the half-toothed gear 3 is meshed with the rotating gear 2; the toggle plate 28 is rotatably mounted on the rotating screw 29; the push spring 31 is sleeved on the rotating screw 29, and the two ends of the push spring 31 are respectively fixedly connected to the working chamber 1 and the toggle rod; the limiting column 27 is fixedly mounted in the working chamber 1, and the limiting column 27 passes through the toggle plate 28; The rotating shaft 7 is rotated to drive the half-tooth gear 3 to rotate, and the rotating half-tooth gear 3 will mesh with the rotating gear 2, so the rotating gear 2 will also rotate the rod and drive the rotating screw 29 to rotate. The rotation of the rotating screw 29 will move the toggle plate 28, and the movement of the toggle plate 28 will stretch the push spring 31. The toggle plate 28 is set to a prismatic shape, so that when the toggle plate 28 moves, the blocked packaging bag will be lifted up, allowing the stuck packaging bag to loosen. When the half-tooth gear 3 is not meshed with the rotating gear 2, the push spring 31 will pull the toggle plate 28 back to its original position.

[0023] See also Figure 1 、 Figure 2 and Figure 3 As shown, a placement block 10 is fixedly connected to the conveyor belt 8; a plurality of placement blocks 10 are provided and are evenly and equidistantly arranged on the conveyor belt 8; a pressing clamp 9 is rotatably connected to the placement block 10; The staff places the packaging bag containing food on the placement block 10 (the end that needs to be sealed), and then moves the pressing clamp 9 on the placement block 10 so that the pressing clamp 9 presses the packaging bag. This can prevent the packaging bag from running away from the sealing position when the conveyor belt 8 moves. When the conveyor belt 8 moves to one end, the pressing clamp 9 will automatically detach from the packaging bag due to the effect of gravity, and the packaging bag can also detach from the conveyor belt 8.

[0024] See also Figure 1 、 Figure 3 and Figure 8 As shown, a transmission motor 6 is fixedly connected to one side of the working chamber 1, and the transmission motor 6 is connected to the rotating shaft 7; a transmission wheel 24 is fixedly connected to the rotating shaft 7; a belt 25 is sleeved on the transmission wheel 24; The rotating shaft 7 is driven to rotate by the transmission motor 6, and the rotating rotating shaft 7 drives the transmission wheel 24 to rotate, thereby driving the belt 25 on the transmission shaft to rotate. The rotating belt 25 will rotate the other transmission wheel 24, so that the two rotating shafts 7 rotate and drive the conveyor belt 8 to rotate.

[0025] See also Figures 1 to 8 As shown, a food packaging method comprises the following steps: S1: The staff places the packaging bag containing food on the conveyor belt 8 of the working chamber 1, and then the conveyor belt 8 transports the packaging bag to the bottom of the sealer 30; S2: While the conveyor belt 8 is transporting the packaging bag, the driving screw 12 also drives the lifting block 13 and the lifting platform 23 to move downward, so that the sealer 30 on the lifting platform 23 slowly approaches the packaging bag on the conveyor belt 8. When the packaging bag moves below the sealer 30, the conveyor belt 8 stops moving, and the driving screw 12 drives the sealer 30 to continue to move downward, so that the sealer 30 seals the packaging bag on the conveyor belt 8; S3: After the sealing is completed, the conveyor belt 8 continues to move, allowing the packaging bags on the conveyor belt 8 to move to the discharge port 26 of the working bin 1, and allowing the packaging bags containing food to be delivered through the discharge port 26 on the working bin 1.

[0026] The working principle of the present invention is as follows: the staff puts the food into the packaging bag and then places it on the conveyor belt 8 of the working bin 1 in turn. The rotating shaft 7 rotates to drive the conveyor belt 8 to move and move the packaging bags on the conveyor belt 8 to below the sealing assembly 36. At this time, the driving assembly drives the sealing assembly 36 to descend. When the driving assembly drives the sealing assembly 36 to descend, it also causes the protective assembly 37 to descend at the same time and move the protective assembly 37 outward. This is designed to prevent the staff from accidentally touching the transmission switch of the conveyor belt 8 when the staff is still placing the food packaging bag. The staff cannot pull out their arms in time, causing the sealing assembly 36 to crush the staff. The outward movement of the protective assembly 37 will first contact the staff. When the staff's arm contacts the protective assembly 37, the protective assembly 37 will immediately lock the driving assembly to prevent the sealing assembly 36 from continuing to descend, thereby ensuring the safety of the staff. After the conveyor belt 8 delivers the packaging bag containing food to the bottom of the sealing assembly 36, it stops moving. The sealing assembly 36 will continue to descend and seal the packaging bag on the conveyor belt 8. This arrangement is to allow multiple packaging bags containing food to be sealed at the same time, without having to seal them one by one, which is more cumbersome. After the food packaging bags on the conveyor belt 8 are sealed, the conveyor belt 8 will start again to push the packaging bags containing food forward and send them all to the discharge port 26 of the working bin 1. Because food packaging is relatively fluffy and swollen, when a large number of them are sent to the discharge port 26, they will be squeezed together and unable to pass through the discharge port 26. Therefore, the toggle component 38 is moved to shuffle the packaging bags containing food so that they can all pass through the discharge port 26 and then proceed to the next step of packaging processing.

[0027] The above is a detailed description of an embodiment of the present invention. However, the content described is only a preferred embodiment of the present invention and should not be considered to limit the scope of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A food packaging machine, comprising a working chamber (1), a rotating shaft (7), a conveyor belt (8) and a discharge port (26); characterized in that: It also includes a protective locking unit arranged in the working compartment (1); Two rotating shafts (7) are provided and are symmetrically rotated and arranged in the working chamber (1); The conveyor belt (8) is sleeved on the rotating shaft (7); The discharge port (26) is opened at one end of the working chamber (1); The protective locking unit is arranged on the working chamber (1), and comprises a driving assembly, a sealing assembly (36), a protective assembly (37), and a toggle assembly (38); the driving assembly drives the sealing assembly (36) to move up and down; the driving assembly drives the protective assembly (37) to move; and the rotating shaft (7) drives the toggle assembly (38) to move; After the food packaging bag is put on, it is placed on the conveyor belt (8) on the working chamber (1), and then the conveyor belt (8) sends the food packaging bag to the bottom of the sealing component (36). The driving component allows the sealing component (36) to descend and the protective component (37) to move, so as to seal the food packaging bag and provide protection during the sealing process. After the food packaging bag is sealed, it is sent to the discharge port (26) by the conveyor belt (8), and the rotating shaft (7) drives the shifting component (38) to move to shift the food packaging bag.

2. A food packaging machine according to claim 1, characterized in that: The driving assembly comprises a support platform (4), a support block (11), a lifting motor (5) and a driving screw (12); The sealing assembly (36) includes a lifting block (13), a lifting platform (23), a fixing column (21) and a sealer (30); Wherein, the support platforms (4) are provided with two and are symmetrically fixed on both sides of the working chamber (1); the support block (11) is fixedly provided on the top of the support platform (4); the driving screw (12) is rotatably provided on the support platform (4) and is located beside the support block (11); the lifting motor (5) is fixedly provided at the bottom of the support platform (4), and the lifting motor (5) is connected to the driving screw (12); The lifting block (13) is slidably arranged on the support block (11), and one end of the lifting block (13) is rotatably connected to the driving screw (12); the lifting platform (23) is fixedly arranged at one end of the lifting block (13); the sealer (30) is fixedly arranged at the bottom of the lifting platform (23); the fixed column (21) is fixedly arranged in the support block (11), and the fixed column (21) passes through the lifting block (13).

3. A food packaging machine according to claim 2, characterized in that: The driving assembly includes a connecting block (19), a connecting shaft (17), a connecting gear (16), a transmission gear (18) and a fixed gear plate (20); The protection assembly (37) includes a pushing tooth plate (22), a safety plate (14) and a fixing frame (15); Wherein, the connecting block (19) is fixedly arranged on one side of the lifting block (13); the connecting shaft (17) is rotatably arranged on the connecting block (19); the connecting gear (16) is fixedly arranged on one end of the connecting shaft (17); the transmission gear (18) is fixedly arranged on the other end of the connecting shaft (17); the fixed tooth plate (20) is fixedly arranged on the supporting block (11), and the fixed tooth plate (20) is engaged with the connecting gear (16); The pushing tooth plate (22) is slidably arranged on the lifting block (13), and the pushing tooth plate (22) is engaged with the transmission gear (18); the fixed frame (15) is fixedly arranged at one end of the pushing tooth plate (22); and the safety plate (14) is slidably arranged in the fixed frame (15).

4. A food packaging machine according to claim 3, characterized in that: The protection assembly (37) further includes a limiting groove (33), a pressing spring (34), a brake (35) and a pressing block (32); The limiting groove (33) is fixedly arranged on one side of the lifting block (13); the brake (35) is slidably arranged in the limiting groove (33), and the brake (35) passes through the lifting block (13); the pressing spring (34) is fixedly arranged in the limiting groove (33), and the other end of the pressing spring (34) is fixedly connected to the brake (35); and the pressing block (32) is fixedly arranged on the safety plate (14).

5. A food packaging machine according to claim 4, characterized in that: The toggle assembly (38) includes a rotating screw (29), a toggle plate (28), a limiting column (27), a push spring (31), a rotating gear (2) and a half-tooth gear (3); The half-tooth gear (3) is fixedly arranged on the rotating shaft (7); the rotating screw (29) is rotatably arranged in the working chamber (1); the rotating gear (2) is fixedly arranged on the rotating screw (29), and the half-tooth gear (3) is engaged with the rotating gear (2); the toggle plate (28) is rotatably arranged on the rotating screw (29); the pushing spring (31) is sleeved on the rotating screw (29), and the two ends of the pushing spring (31) are respectively fixedly connected to the working chamber (1) and the toggle rod; the limiting column (27) is fixedly arranged in the working chamber (1), and the limiting column (27) passes through the toggle plate (28).

6. A food packaging machine according to claim 5, characterized in that: A placement block (10) is fixedly connected to the conveyor belt (8); a plurality of the placement blocks (10) are provided and are evenly and equidistantly arranged on the conveyor belt (8); a pressing clamp (9) is rotatably connected to the placement block (10).

7. A food packaging machine according to claim 6, characterized in that: A transmission motor (6) is fixedly connected to one side of the working chamber (1), and the transmission motor (6) is connected to the rotating shaft (7); a transmission wheel (24) is fixedly connected to the rotating shaft (7); and a belt (25) is sleeved on the transmission wheel (24).

8. A food packaging method using the food packaging machine according to claim 7, characterized in that: The packaging method comprises the following steps: S1: A worker places a packaging bag containing food on the conveyor belt (8) of the working chamber (1), and then the conveyor belt (8) transports the packaging bag to the bottom of the sealer (30); S2: While the conveyor belt (8) is transporting the packaging bag, the driving screw (12) also drives the lifting block (13) and the lifting platform (23) to move downward, so that the sealer (30) on the lifting platform (23) slowly approaches the packaging bag on the conveyor belt (8). When the packaging bag moves below the sealer (30), the conveyor belt (8) stops moving, and the driving screw (12) causes the sealer (30) to continue to move downward, so that the sealer (30) seals the packaging bag on the conveyor belt (8); S3: After the sealing is completed, the conveyor belt (8) continues to move, allowing the packaging bags on the conveyor belt (8) to move to the discharge port (26) of the working bin (1), allowing the packaging bags containing food to be delivered through the discharge port (26) on the working bin (1).

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