Food packaging and sealing machine

By combining components such as insert rods, baffles, and limit balls, the problems of tape slippage and inconvenient installation in food wrapping machines are solved, enabling rapid tape installation and automatic cutting, improving the flatness of wrapping and cutting efficiency, and enhancing the overall efficiency of food packaging.

CN120964155AInactive Publication Date: 2025-11-18桂林名士威食品有限公司
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Patent Information

Application Number
CN202511219688.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-08-28
Publication Date
2025-11-18
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

When using existing food wrapping machines, the food packaging tape is prone to lateral slippage, resulting in uneven wrapping, inconvenient installation, and low cutting efficiency.

Method used

The design incorporates a combination of components such as insert rods, baffles, limit balls, drive motors, and micro motors to enable rapid installation, anti-displacement, and automatic cutting of food packaging tape. The drive motor drives gears and C-shaped toothed rings for stable winding, while the micro motor drives the cutting blade for precise cutting.

Benefits of technology

It enables rapid installation and prevents displacement of food packaging tape, ensures smooth wrapping, improves cutting efficiency, and enhances the overall efficiency and quality of food packaging.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a food packaging and sealing machine which comprises two supporting plates, the two supporting plates are arranged in a bilateral symmetry mode, the tops of the two supporting plates are fixedly connected to the bottom of a circular plate, a plurality of attaching wheels are hinged to the front side of the circular plate, and the attaching wheels are arranged in an annular array with the circle center of the circular plate as the center. According to the food packaging adhesive tape pasting device, through mutual cooperation of an insertion rod, a baffle, a handle, a limiting ball, a round pipe, a first spring, a second spring and other components, when a user sleeves the insertion rod with food packaging adhesive tape, the food packaging adhesive tape can be conveniently pasted on the insertion rod, the food packaging adhesive tape can be conveniently pasted on the insertion rod, and the food packaging adhesive tape can be conveniently pasted on the insertion rod; when the food packaging adhesive tape is installed, an inserting rod can be inserted into an inner cavity of a limiting block, the purpose of rapidly installing the food packaging adhesive tape is achieved, when the food packaging adhesive tape is installed, a movable baffle is attached to the outer side of the food packaging adhesive tape, and the food packaging adhesive tape is prevented from moving in the moving process.
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Description

Technical Field

[0001] This invention relates to the field of food packaging technology, specifically to a food packaging sealing machine. Background Technology

[0002] Food packaging machinery refers to automated equipment used in the food production field that can complete all or part of the packaging process. Food circular wrapping machines are also a type of packaging machinery. Food circular wrapping machines (also known as ring wrapping machines) are automated equipment designed for efficient and stable packaging, and are especially suitable for products in the food industry that have high requirements for dust prevention, moisture prevention, and damage prevention.

[0003] Existing food wrapping machines require the food packaging tape to be installed on the drive unit before use. Since the drive unit rotates the food packaging tape via a sleeve rod, and the food packaging tape has a circular cross-section, the tape may slip or slide sideways as it rotates with the drive unit. This can easily cause the tape to not be on the same plane when it is wrapped around the outside of the vegetables. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] A food packaging sealing machine includes two support plates, which are symmetrically arranged from left to right. The tops of the two support plates are fixedly connected to the bottom of a circular plate. Several bonding wheels are hinged to the front side of the circular plate and arranged in a circular array with the center of the circular plate as the center. A C-shaped toothed ring is bonded to the outer side of the bonding wheels. A fixing plate is fixedly connected to the inner side of the circular plate. Two gears are arranged symmetrically from left to right on the front side of the fixing plate. A first rotating shaft is passed through the center of each gear and fixedly connected to it. The rear end of the first rotating shaft passes through the fixing plate and is fixedly connected to a grooved wheel. A synchronous belt is sleeved on the outer side of the two grooved wheels.

[0006] Preferably, a drive motor is provided on the rear side of the fixing plate, the power output shaft of the drive motor is fixedly connected to the adjacent first rotating shaft, an L-shaped connecting rod is fixedly connected to the top of the drive motor, and the other end of the L-shaped connecting rod is fixedly connected to the fixing plate.

[0007] Preferably, a groove is provided on the front side of the C-shaped toothed ring near the left side, a limiting block is provided on the front side of the groove, a connecting plate is fixedly connected to the outer side of the limiting block, and the rear side of the connecting plate is fixedly connected to the C-shaped toothed ring.

[0008] Preferably, a rod is provided on the front side of the limiting block, the rear end of the rod passes through the limiting block and extends into the groove, two round holes are opened on the outer side of the rod near the rear end, a round tube is fixedly connected to the front end of the rod, a movable rod is fitted inside the rod, a rhomboid rod is fixedly connected to the rear end of the movable rod, and both round holes are fitted with limiting balls.

[0009] Preferably, the front end of the circular tube is provided with a handle, and a second rotating shaft is fixedly connected to the rear side of the handle. The rear end of the second rotating shaft passes through the inner cavity of the circular tube and is fixedly connected to a clamping plate. The rear side of the clamping plate is fixedly connected to a moving rod. A first spring is sleeved on the outer side of the moving rod near the front end, and a second spring is sleeved on the outer side of the second rotating shaft.

[0010] Preferably, the top of the round tube is provided with a groove, the groove is slidably connected to a baffle, and food packaging tape is sleeved on the outside of the insertion rod, with the baffle adhering to the outside of the food packaging tape.

[0011] Preferably, a connecting rod is fixedly connected to the rear side of the support plate near the left side, and a mounting plate is fixedly connected to the front end of the connecting rod. A micro motor is fixedly connected to the left side of the mounting plate, and two opposing gears are hinged to the right side of the mounting plate. The two opposing gears are meshed with each other, and the power output shaft of the micro motor passes through the mounting plate and is fixedly connected to the adjacent opposing gear.

[0012] Preferably, the mounting plate has two swing cranks hinged to the right side, the two swing cranks are arranged symmetrically up and down, and the two opposing gears are fixedly connected to the outer edges near the edges. The right side of the swing crank has a first annular opening near the center, and the right side of the swing crank has a second annular opening near the front. The fitting rod fits into the first annular opening.

[0013] Preferably, two welding plates are fixedly connected to the left side of the mounting plate. The two welding plates are arranged symmetrically, one above the other. A limit plate is fixedly connected to the left side of each of the two welding plates. A cutting blade is slidably connected to the limit plate. A hinge block is fixedly connected to the right side of the cutting blade. The hinge block fits into the second annular opening.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention, through the cooperation of components such as the insertion rod, baffle, handle, limiting ball, round tube, first spring, and second spring, enables the insertion rod to be inserted into the inner cavity of the limiting block when the user puts the food packaging tape on the insertion rod, thus achieving the purpose of quickly installing the food packaging tape. When the food packaging tape is installed, the movable baffle can be fitted to the outside of the food packaging tape to prevent the food packaging tape from shifting during the movement process.

[0016] 2. This invention enables rapid cutting of food packaging tape after the food packaging is wrapped by the cooperation between components such as connecting rods, mounting plates, swing cranks, opposing gears, welding plates, limiting plates, bonding rods, and hinge blocks. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the circular plate structure of the present invention;

[0019] Figure 3 This is a rear view of the circular plate structure of the present invention;

[0020] Figure 4 This is a schematic diagram of the mounting plate structure of the present invention;

[0021] Figure 5 This is a right view of the mounting plate structure of the present invention;

[0022] Figure 6 This is a schematic diagram of the insertion rod structure of the present invention;

[0023] Figure 7 This is a schematic diagram of the internal structure of the insertion rod of the present invention;

[0024] Figure 8 This is a plan view of the insertion rod structure of the present invention.

[0025] The following are the labels in the diagram: 1. Support plate; 2. Circular plate; 3. Adhesive wheel; 4. C-shaped toothed ring; 5. Food packaging tape; 6. Fixing plate; 7. Gear; 8. Limiting block; 9. Connecting plate; 10. Drive motor; 11. Synchronous belt; 12. Grooved wheel; 13. L-shaped connecting rod; 14. Connecting rod; 15. Mounting plate; 16. Oscillating crank; 17. Opposing gear; 18. Adhesive rod; 19. Hinge block; 20. Cutting blade; 21. Limiting plate; 22. Welding plate; 23. Micro motor; 24. Insert rod; 25. Handle; 26. Baffle; 27. Circular tube; 28. Limiting ball; 29. ​​Moving rod; 30. Diamond rod; 31. First spring; 32. Clamping plate; 33. Second spring. Detailed Implementation

[0026] Example 1: Please refer to Figure 1-8 The present invention provides a technical solution:

[0027] A food packaging sealing machine includes two support plates 1, which are symmetrically arranged. The tops of the two support plates 1 are fixedly connected to the bottom of a circular plate 2. Several bonding wheels 3 are hinged to the front side of the circular plate 2. The bonding wheels 3 are arranged in a circular array with the center of the circular plate 2 as the center. A C-shaped toothed ring 4 is bonded to the outer side of the bonding wheels 3. A fixing plate 6 is fixedly connected to the inner side of the circular plate 2. Two gears 7 are arranged symmetrically on the front side of the fixing plate 6. A first rotating shaft is inserted through the center of the gear 7 and fixedly connected to it. The rear end of the first rotating shaft... A grooved wheel 12 is fixedly connected to the fixed plate 6. A synchronous belt 11 is sleeved on the outer side of the two grooved wheels 12. A drive motor 10 is set on the rear side of the fixed plate 6. The power output shaft of the drive motor 10 is fixedly connected to the adjacent first rotating shaft. An L-shaped connecting rod 13 is fixedly connected to the top of the drive motor 10. The other end of the L-shaped connecting rod 13 is fixedly connected to the fixed plate 6. A groove is opened on the front side of the C-shaped toothed ring 4 near the left side. A limit block 8 is set on the front side of the groove. A connecting plate 9 is fixedly connected to the outer side of the limit block 8. The rear side of the connecting plate 9 is fixedly connected to the C-shaped toothed ring 4.

[0028] A rod 24 is provided on the front side of the limiting block 8. The rear end of the rod 24 passes through the limiting block 8 and extends into the groove. Two round holes are opened on the outer side of the rod 24 near the rear end. A round tube 27 is fixedly connected to the front end of the rod 24. A moving rod 29 is fitted inside the inner cavity of the rod 24. A diamond-shaped rod 30 is fixedly connected to the rear end of the moving rod 29. Limiting balls 28 are fitted into both round holes. A handle 25 is provided at the front end of the round tube 27. A second rotating shaft is fixedly connected to the rear side of the handle 25. The rear end of the second rotating shaft passes through the inner cavity of the round tube 27 and is fixedly connected to a locking plate 32. The rear side of the locking plate 32 is fixedly connected to the moving rod 29. A first spring 31 is sleeved on the outer side of the moving rod 29 near the front end. A second spring 33 is sleeved on the outer side of the second rotating shaft. A sliding groove is opened at the top of the round tube 27. A baffle 26 is slidably connected to the sliding groove. Food packaging tape 5 is sleeved on the outer side of the rod 24. The baffle 26 is fitted to the outer side of the food packaging tape 5.

[0029] A connecting rod 14 is fixedly connected to the rear side of the support plate 1 near the left side. A mounting plate 15 is fixedly connected to the front end of the connecting rod 14. A micro motor 23 is fixedly connected to the left side of the mounting plate 15. Two opposing gears 17 are hinged to the right side of the mounting plate 15. The two opposing gears 17 are meshed with each other. The power output shaft of the micro motor 23 passes through the mounting plate 15 and is fixedly connected to the adjacent opposing gear 17. Two swing cranks 16 are hinged to the right side of the mounting plate 15. The two swing cranks 16 are arranged symmetrically, one above the other. The outer sides of the two opposing gears 17 are close to the edge. A fitting rod 18 is fixedly connected at the edge. A first annular opening is opened on the right side of the swing crank 16 near the center, and a second annular opening is opened on the right side of the swing crank 16 near the front. The fitting rod 18 fits into the first annular opening. Two welding plates 22 are fixedly connected to the left side of the mounting plate 15. The two welding plates 22 are arranged symmetrically at the top and bottom. A limit plate 21 is fixedly connected to the left side of each of the two welding plates 22. A cutting blade 20 is slidably connected to the limit plate 21. A hinge block 19 is fixedly connected to the right side of the cutting blade 20. The hinge block 19 fits into the second annular opening.

[0030] Example 2:

[0031] I. Overall Structure of the Device

[0032] This embodiment discloses a food packaging sealing machine, belonging to the field of food packaging technology, which aims to solve the problems of easy slippage of food packaging tape, inconvenient installation, and low cutting efficiency in existing circular wrapping machines. The overall structure of the device is as follows:

[0033] The device includes two symmetrically arranged support plates 1, with their tops fixedly connected to the bottom of a circular plate 2, forming the support base of the device. Several contact wheels 3 are hinged to the front side of the circular plate 2, arranged in a circular array around the center of the circular plate 2. A C-shaped toothed ring 4 is attached to the outer side of each wheel, allowing stable rotation along the contact wheels 3. A fixing plate 6 is fixedly connected to the inner side of the circular plate 2. Two symmetrically arranged gears 7 are located on the front side of the fixing plate 6. A first rotating shaft passes through and is fixedly connected to the center of each gear 7. The rear end of the first rotating shaft passes through the fixing plate 6 and is fixedly connected to a grooved wheel 12. A synchronous belt 11 is fitted onto the outer sides of the two grooved wheels 12, enabling synchronous power transmission.

[0034] II. Connection and Function of Core Components

[0035] (I) Drive transmission system

[0036] A drive motor 10 is located on the rear side of the fixed plate 6. Its power output shaft is fixedly connected to the adjacent first rotating shaft to provide winding power for the device. The top of the drive motor 10 is fixedly connected to the fixed plate 6 via an L-shaped connecting rod 13 to ensure stability during the driving process. When the drive motor 10 starts, it drives the grooved wheel 12 on the same side to rotate through the first rotating shaft. The grooved wheel 12 on the other side rotates synchronously under the action of the synchronous belt 11, which in turn drives the two gears 7 to rotate synchronously through the first rotating shaft. The gears 7 mesh with the C-shaped gear ring 4, and finally drive the C-shaped gear ring 4 to move in a ring along the contact wheel 3.

[0037] (II) Food Packaging Tape Installation and Anti-Displacement Mechanism

[0038] A groove is formed on the front side of the C-shaped toothed ring 4 near the left side. A limiting block 8 is provided on the front side of the groove. The limiting block 8 is fixedly connected to the C-shaped toothed ring 4 through a connecting plate 9 fixed on the outside. A rod 24 is provided on the front side of the limiting block 8. The rear end of the rod 24 passes through the limiting block 8 and extends into the groove. Two round holes are formed on the outer side near the rear end of the rod 24. A limiting ball 28 is fitted inside the round holes. A moving rod 29 is fitted inside the inner cavity of the moving rod 24. A diamond-shaped rod 30 is fixedly connected to the rear end of the moving rod 29. A second rotating shaft is connected to the front end of the moving rod 29 through a clamping plate 32. The front end of the second rotating shaft passes through a round tube 27 (the front end of the rod 24 is fixedly connected to the round tube 27) and is fixedly connected to a handle 25. A first spring 31 is sleeved on the outer side of the moving rod 29 near the front end, and a second spring 33 is sleeved on the outer side of the second rotating shaft to realize the reset function.

[0039] The top of the round tube 27 is provided with a sliding groove, and a baffle 26 is slidably connected in the sliding groove. When the food packaging tape 5 is sleeved on the outside of the insertion rod 24, the baffle 26 can slide to fit against the outside of the food packaging tape 5, effectively preventing the tape from sliding sideways during rotation.

[0040] (III) Automatic Cutting System

[0041] A mounting plate 15 is fixedly connected to the rear side of the support plate 1 near the left side via a connecting rod 14. A micro motor 23 is fixedly connected to the left side of the mounting plate 15, and two meshing opposing gears 17 are hinged to the right side. The power output shaft of the micro motor 23 passes through the mounting plate 15 and is fixedly connected to the adjacent opposing gear 17. Two symmetrically positioned swing cranks 16 are also hinged to the right side of the mounting plate 15. A fitting rod 18 is fixedly connected to the outer edge of the opposing gears 17. A first annular opening that fits with the fitting rod 18 is opened near the center of the right side of the swing crank 16, and a second annular opening is opened near the front side.

[0042] Two symmetrical welding plates 22 are fixedly connected to the left side of the mounting plate 15. A limiting plate 21 is fixedly connected to the left side of the welding plate 22. A cutting blade 20 is slidably connected inside the limiting plate 21. A hinge block 19 is fixedly connected to the right side of the cutting blade 20. The hinge block 19 fits with the second annular opening of the swing crank 16 to realize the transmission of cutting power.

[0043] III. Work Process

[0044] (I) Installation of food packaging tape

[0045] The worker attaches the food packaging tape 5 to the outside of the insert rod 24, pushes the handle 25 to move the second rotating shaft, the clamping plate 32, and the moving rod 29 backward. The moving rod 29 moves the rhomboid rod 30 backward and disengages from the limiting ball 28. The limiting ball 28 retracts into the round hole. At this time, the rear end of the insert rod 24 is inserted into the inner cavity of the limiting block 8. After releasing the handle 25, the first spring 31 returns to its original position, moving the moving rod 29 and the rhomboid rod 30 forward. The rhomboid rod 30 opens the limiting ball 28 so that it fits against the rear side of the limiting block 8, thus fixing the insert rod 24. The sliding baffle 26 then fits against the outside of the food packaging tape 5 to prevent the tape from shifting.

[0046] (II) Food wrapping

[0047] When the drive motor 10 is started, its power output shaft drives the same-side grooved wheel 12 to rotate through the first rotating shaft. The other side grooved wheel 12 rotates synchronously under the action of the synchronous belt 11, thereby driving the two gears 7 to rotate synchronously. The gears 7 mesh with the C-shaped toothed ring 4, driving the C-shaped toothed ring 4 to move in a ring along the bonding wheel 3, so as to realize the ring wrapping of the food packaging tape 5 around the food.

[0048] (III) Automatic tape cutting

[0049] Once the wrapping is complete, the micro motor 23 is started, and its power output shaft drives the adjacent opposing gear 17 to rotate. The other opposing gear 17 rotates synchronously in the opposite direction due to meshing. The opposing gear 17 pushes the swing crank 16 to swing around the hinge point through the bonding rod 18. The swing crank 16 drives the hinge block 19 and the cutting blade 20 to slide along the limiting plate 21 through the second annular opening. The two cutting blades 20 move in opposite directions to complete the precise cutting of the food packaging tape 5.

[0050] IV. Beneficial Effects

[0051] This embodiment achieves rapid installation and anti-displacement of food packaging tape through the cooperation of insert rods, limiting blocks, limiting balls, and baffles, solving the problem of uneven winding caused by tape slippage. Stable and efficient circular winding is achieved through the transmission of drive motor, gears, and C-shaped gear rings. Automatic and precise cutting of tape is achieved by driving the cutting blade through micro motor, opposing gears, and swing crank, thus improving the overall efficiency and quality of food packaging.

[0052] Working principle: First, the operator attaches the food packaging tape 5 to the outside of the insert rod 24. When the user pushes the handle 25, the handle 25 drives the second rotating shaft, which in turn moves the clamping plate 32 to the rear. The clamping plate 32 moves rearward, which in turn moves the moving rod 29 to the rearward. The moving rod 29 then moves the diamond-shaped rod 30 to the rearward. When the diamond-shaped rod 30 moves, it disengages from contact with the two limiting balls 28, making the limiting balls 28 movable. At this time, the two limiting balls 28 enter the inner cavity of the circular hole, allowing the moving rod 29 to insert into the inner cavity of the limiting block 8. When the two limiting balls 28 move to the rear of the limiting block 8, the user can release the handle 25. Under the influence of the first spring 31, the moving rod 29 returns to its original position. At this time, the two limiting balls 28 move backward, thus fitting against the rear of the limiting block 8. Subsequently, the user moves the baffle 26 to the rear, and it engages with the outside of the food packaging tape 5. When the drive motor 10 starts, it drives the adjacent grooved wheel 12 to rotate via the power output shaft. When the grooved wheel 12 on the right rotates, it drives the other grooved wheel 12 to rotate via the synchronous belt 11. The two grooved wheels 12 drive the two gears 7 to rotate synchronously via the adjacent first rotating shaft. When the gears 7 rotate, they drive the C-shaped gear ring 4 to rotate. When the C-shaped gear ring 4 rotates, it drives the food packaging tape 5 to rotate, thereby wrapping the food. When the wrapping is completed, the micro motor 23 starts and drives the upper opposing gear 17 to rotate via the power output shaft. When the upper opposing gear 17 rotates, it drives the other opposing gear 17 to rotate. When the two opposing gears 17 rotate, they drive the two swing cranks 16 to swing in opposite directions via the bonding rod 18. When the swing cranks 16 swing, they drive the adjacent cutting blades 20 to move in opposite directions, thereby cutting the food packaging tape 5.

Claims

1. A food packaging sealing machine, comprising two support plates (1), characterized in that: The two support plates (1) are arranged symmetrically on the left and right. The top of the two support plates (1) is fixedly connected to the bottom of the circular plate (2). Several contact wheels (3) are hinged to the front side of the circular plate (2). The contact wheels (3) are arranged in a circular array with the center of the circular plate (2) as the center. A C-shaped toothed ring (4) is attached to the outer side of the contact wheels (3). A fixing plate (6) is fixedly connected to the inner side of the circular plate (2). Two gears (7) are arranged symmetrically on the front side of the fixing plate (6). A first rotating shaft is passed through the center of the gear (7) and fixedly connected to it. The rear end of the first rotating shaft passes through the fixing plate (6) and is fixedly connected to a grooved wheel (12). A synchronous belt (11) is sleeved on the outer side of the two grooved wheels (12).

2. The food packaging sealing machine according to claim 1, characterized in that: A drive motor (10) is provided on the rear side of the fixed plate (6). The power output shaft of the drive motor (10) is fixedly connected to the adjacent first rotating shaft. An L-shaped connecting rod (13) is fixedly connected to the top of the drive motor (10). The other end of the L-shaped connecting rod (13) is fixedly connected to the fixed plate (6).

3. A food packaging sealing machine according to claim 2, characterized in that: The C-shaped toothed ring (4) has a groove on the front side near the left side, and a limiting block (8) is provided on the front side of the groove. A connecting plate (9) is fixedly connected to the outside of the limiting block (8), and the rear side of the connecting plate (9) is fixedly connected to the C-shaped toothed ring (4).

4. A food packaging sealing machine according to claim 3, characterized in that: A rod (24) is provided on the front side of the limiting block (8). The rear end of the rod (24) passes through the limiting block (8) and extends into the groove. Two round holes are opened on the outer side of the rod (24) near the rear end. A round tube (27) is fixedly connected to the front end of the rod (24). A moving rod (29) is fitted inside the inner cavity of the rod (24). A rhomboid rod (30) is fixedly connected to the rear end of the moving rod (29). Both round holes are fitted with limiting balls (28).

5. A food packaging sealing machine according to claim 4, characterized in that: The front end of the round tube (27) is provided with a handle (25), and the rear side of the handle (25) is fixedly connected to a second rotating shaft. The rear end of the second rotating shaft passes through the inner cavity of the round tube (27) and is fixedly connected to a clamping plate (32). The rear side of the clamping plate (32) is fixedly connected to a moving rod (29). A first spring (31) is sleeved on the outer side of the moving rod (29) near the front end, and a second spring (33) is sleeved on the outer side of the second rotating shaft.

6. A food packaging sealing machine according to claim 5, characterized in that: The top of the round tube (27) is provided with a sliding groove, and a baffle (26) is slidably connected to the sliding groove. Food packaging tape (5) is sleeved on the outside of the insert rod (24), and the baffle (26) is attached to the outside of the food packaging tape (5).

7. A food packaging sealing machine according to claim 6, characterized in that: A connecting rod (14) is fixedly connected to the rear side of the support plate (1) near the left side. A mounting plate (15) is fixedly connected to the front end of the connecting rod (14). A micro motor (23) is fixedly connected to the left side of the mounting plate (15). Two opposing gears (17) are hinged to the right side of the mounting plate (15). The two opposing gears (17) are meshed with each other. The power output shaft of the micro motor (23) passes through the mounting plate (15) and is fixedly connected to the adjacent opposing gear (17).

8. A food packaging sealing machine according to claim 7, characterized in that: The mounting plate (15) has two swing cranks (16) hinged to its right side. The two swing cranks (16) are arranged symmetrically up and down. The two opposing gears (17) are fixedly connected to a fitting rod (18) near the edge on their outer side. The swing crank (16) has a first annular opening near the center on its right side and a second annular opening near the front side on its right side. The fitting rod (18) fits into the first annular opening.

9. A food packaging sealing machine according to claim 8, characterized in that: The mounting plate (15) is fixedly connected to two welding plates (22) on the left side. The two welding plates (22) are arranged symmetrically on the top and bottom. The left side of each of the two welding plates (22) is fixedly connected to a limiting plate (21). The limiting plate (21) is slidably connected to a cutting blade (20). The right side of the cutting blade (20) is fixedly connected to a hinge block (19). The hinge block (19) fits against the second annular opening.