Cover sealing device for food packaging and using method of cover sealing device

Abstract

The invention relates to the technical field of food processing, in particular to a cover sealing device for food packaging and a using method of the cover sealing device. Comprising a conveying mechanism and a capping mechanism, the capping mechanism is located on the outer side of the conveying mechanism, transmission rollers are rotationally connected to the two ends of a supporting frame, a conveying driving motor is fixed to one end of the supporting frame, and the output end of the conveying driving motor is connected with one transmission roller; and the two sides of the outer sides of the two transmission rollers and located on the inner side of the supporting frame are connected through conveying belts, positioning blocks are evenly distributed and fixed to the outer sides of the two conveying belts, and adjusting shells are symmetrically and slidably connected to the tops of the two sides of the supporting frame. According to the cover sealing device for food packaging and the using method thereof, through cooperation of the conveying mechanism and the cover sealing mechanism, when the device is used, bottom packages are conveyed through the conveying mechanism, top packages are conveyed through the cover sealing mechanism, the packages are sealed, and therefore processed food is packaged.

Description

Technical Field

[0001] The present invention relates to the technical field of food processing, and in particular to a sealing device for food packaging and a use method thereof. Background Art

[0002] As people's living standards improve, the demand for food increases, and people's pursuit of food freshness and taste is also getting higher and higher. Capping is an essential process in food production lines, and the quality of packaging directly affects the quality of food.

[0003] Patent document No. (CN221141152U) discloses a capping device for a food production packaging line, comprising a conveyor platform, a barrier assembly fixedly mounted on the surface of the conveyor platform, a mounting assembly fixedly mounted on the top surface of the conveyor platform, a turntable mechanism fixedly mounted on the top of the mounting assembly, and a capping mechanism fixedly mounted on the surface of the conveyor platform away from the mounting assembly. The utility model can guide the packaging cans scattered on the conveyor track by installing a guide box with guide rollers on the side baffles, so that they can be kept in the middle and moved into the card slot on the turntable, preventing random movement and accumulation that would make the turntable card column unable to rotate. By replacing the support assembly of the fixed capping unit with a rotating unit that can be rotated by a rotating motor in conjunction with a rotating rod, the capping mechanism can be rotated to load and unload the packaging cap, effectively improving the flexibility of the capping mechanism.

[0004] When using the above technology, it was found that the following technical problems exist in the existing technology: when the existing sealing device is in use, it is not convenient to stably support the bottom of the lid after the sealing is detected. Therefore, a sealing device for food packaging and a method of use thereof are designed to provide another technical solution to the above technical problems. Summary of the Invention

[0005] Based on this, it is necessary to provide a food packaging sealing device and a method of use thereof to address the above technical problems, so as to solve the technical problem that the existing sealing device is not convenient for stably supporting the bottom of the lid after detecting the sealing when in use.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] Base comprises support, castor, and frame upper is provided with guide rail, and support and conveyer frames movable end contact site are provided with recoil spring or rubber cushion, and castor is arranged on the pin of base bottom four, to carry mobile handler location.

[0008] As a preferred embodiment of the food packaging sealing device provided by the present invention, an infrared sensor is fixed inside one of the adjustment shells.

[0009] As a preferred embodiment of the food packaging sealing device provided by the present invention, the positioning assembly includes a limiting plate, a placement groove is opened inside the top of the limiting plate, a first pressure sensor is fixed on both sides of the top of the limiting plate, and the bottom end of the limiting plate is slidably connected to the positioning block.

[0010] As a preferred embodiment of the food packaging sealing device provided by the present invention, the supporting assembly includes a protective shell, a lifting column, a limiting frame, a movable shell and a tension spring. The top of the protective shell is internally slidably connected to the lifting column, the top of the lifting column is threadedly connected to the limiting frame, and the limiting frame is slidably connected to the bottom end of the limiting plate, the interior of the protective shell is internally slidably connected to the movable shell, and the movable shell is fixed to the limiting frame, and a tension spring is fixed to the bottom of the movable shell and located inside the protective shell.

[0011] As a preferred embodiment of the food packaging capping device provided by the present invention, a first push rod motor is fixed inside the protective shell and at the bottom of the movable shell, and a second pressure sensor is fixed to the top of the push rod of the first push rod motor.

[0012] As a preferred embodiment of the food packaging sealing device provided by the present invention, a synchronization block is slidably connected to the interior of one end of the movable shell, a disengagement column is fixed to one side of the synchronization block, a compression spring is fixed to one end of the synchronization block and located inside the movable shell, an extrusion slope is provided on the top of the synchronization block away from one end of the compression spring, a disengagement plate is fixed at the top of the protective shell and at a position corresponding to the extrusion slope, an inclined surface is provided at the bottom of the disengagement plate close to one end of the disengagement column, a second air pump is fixed to one end of the protective shell, and a working plate is fixed to the push rod of the second air pump.

[0013] As a preferred embodiment of the food packaging sealing device provided by the present invention, the sealing mechanism includes a fixed frame, a synchronization plate, a first air pump, a lifting plate, a guide column and a vacuum suction head. The fixed frame is located on the outside of the conveying mechanism, and a synchronization plate is provided on the top of the fixed frame. The first air pump is fixed inside the synchronization plate, and the push rod of the first air pump is fixed with a lifting plate. Guide columns are fixed on the top of both sides of the lifting plate. The guide columns and the synchronization plate, as well as the guide columns and the fixed frame are all slidably connected, and a vacuum suction head is fixed at the bottom of the lifting plate.

[0014] As a preferred embodiment of the food packaging sealing device provided by the present invention, the sealing mechanism includes a shell, a displacement block, a displacement drive motor and a displacement gear. The shell is fixed on one side of the top of the fixed frame, the displacement block is slidably connected to the inside of the shell, the top of the displacement block is fixed to the synchronization plate, the displacement drive motor is fixed to the inside of the displacement block, the output end of the displacement drive motor is connected to the displacement gear, the bottom of the displacement gear is meshed with a rack, and the rack is fixed to the shell.

[0015] A method for using a food packaging capping device, for any of the above items, comprising the following steps:

[0016] S1: Convey the bottom package with food to the inside of the limit plate at the top of the conveying mechanism, which can be conveyed manually or with the cooperation of other equipment;

[0017] S2: Start the conveyor drive motor to drive the conveyor belt to move, and use the infrared sensor to identify the position of the bottom package with food on the limit plate;

[0018] S3: Start the second air pump to allow the movable shell to rise through the limit frame to drive the limit plate to rise, and control the second air pump to stop working according to the signal of the first pressure sensor;

[0019] S4: Start the support frame, and use the vacuum suction head to absorb the top package and transport the top package to the top of the adjustment shell;

[0020] S5: Start the first air pump, and let the first air pump drive the vacuum suction head and the top package to descend, completing the food packaging capping.

[0021] It can be seen without a doubt that the above-mentioned technical solution of this application can definitely solve the technical problem to be solved by this application.

[0022] At the same time, through the above technical solutions, the present invention has at least the following beneficial effects:

[0023] The present invention provides a food packaging capping device and a method of using the same. The conveying mechanism and the capping mechanism cooperate to allow the device to convey the bottom package through the conveying mechanism and convey the top package through the capping mechanism to cap the packages, thereby packaging the processed food and stably supporting and adjusting the bottom package.

[0024] Through the cooperation of the fixing frame, the first air pump, the lifting plate and the vacuum suction head, the height of the vacuum suction head can be adjusted by the first air pump, and the top package can be adsorbed and fixed by the vacuum suction of the vacuum suction head. At the same time, the displacement gear drives the vacuum suction head to perform translation adjustment, thereby moving it to the top of the bottom package. The first air pump drives the vacuum suction head to descend to close the package.

[0025] Through the cooperation of the limit plate, the protective shell and the limit frame, the limit plate is transported on the capping mechanism through the two positioning blocks. At the same time, the limit frame is driven to rise by the lifting column, which drives the limit plate to rise. The rising distance of the limit plate is determined by the pressure transmitted by the first pressure sensor, and the bottom package is supported by the limit plate.

[0026] Through the cooperation of the moving shell, the synchronous block and the working plate, the moving shell can be raised and lowered inside the protective shell. At the same time, the moving shell drives the lifting column to drive the limit plate to rise and fall, and the contact between the synchronous block and the disengagement plate enables the moving shell to rise to the specified position and then fall. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the conveying mechanism of the present invention;

[0030] Figure 3 Schematic diagram of the structure of the capping mechanism of the present invention;

[0031] Figure 4 Schematic diagram of the structure of the first air pump of the present invention;

[0032] Figure 5 Schematic diagram of the internal structure of the displacement block of the present invention;

[0033] Figure 6 This is a schematic diagram of the internal structure of the protective shell of the present invention;

[0034] Figure 7 Schematic diagram of the structure of the limiting plate of the present invention;

[0035] Figure 8 It is a structural schematic diagram of the limiting frame of the present invention;

[0036] Figure 9 Schematic diagram of the internal structure of the mobile shell of the present invention.

[0037] In the figure: 1. conveying mechanism; 2. capping mechanism; 3. support frame; 4. transmission roller; 5. conveying drive motor; 6. conveyor belt; 7. positioning block; 8. adjustment shell; 9. positioning assembly; 10. support assembly; 11. fixing frame; 12. synchronization plate; 13. first air pump; 14. lifting plate; 15. guide column; 16. shell; 17. vacuum suction head; 18. displacement block; 19. displacement drive motor; 20. displacement gear; 21. limit plate; 22. first pressure sensor; 23. protective shell; 24. lifting column; 25. limit frame; 26. moving shell; 27. tension spring; 28. first push rod motor; 29. second pressure sensor; 30. synchronization block; 31. extrusion slope; 32. separation column; 33. compression spring; 34. separation plate; 35. working plate; 36. second air pump. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0040] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein may be combined with each other.

[0041] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0042] Example 1

[0043] Reference Figures 1-9 , a food packaging sealing device includes a conveying mechanism 1 and a sealing mechanism 2, the sealing mechanism 2 is located on the outside of the conveying mechanism 1, so that the food placed on the bottom package can be conveyed by the conveying mechanism 1, and the bottom package with the food can be sealed by the sealing mechanism 2, the conveying mechanism 1 includes a support frame 3, a transmission roller 4, a conveying drive motor 5, a conveyor belt 6, a positioning block 7, an adjusting shell 8, a positioning component 9 and a support component 10, the bottom of the support frame 3 is in contact with the ground, so as to provide height support for the support frame 3, both ends of the support frame 3 are rotatably connected to the transmission roller 4, one end of the support frame 3 is fixed with a conveying drive motor 5, the output end of the conveying drive motor 5 is connected to one of the transmission rollers 4, and the two sides of the outer sides of the two transmission rollers 4 and located on the inner side of the support frame 3 are connected by a conveyor belt 6, so that the conveying drive motor 5 can drive the rotation of one of the transmission rollers 4, and the rotation of one of the transmission rollers 4 drives the other transmission roller 4 to rotate synchronously through the conveyor belt 6;

[0044] In other embodiments, the driving roller 4 and the conveyor belt 6 may be connected via teeth, thereby enabling more stable transmission.

[0045] Positioning blocks 7 are evenly distributed and fixed on the outside of the two conveyor belts 6, so that the rotation of the conveyor belts 6 drives the positioning blocks 7 to rotate back and forth. The tops of both sides of the support frame 3 are symmetrically slidably connected with adjusting shells 8, and a return spring is fixed between the bottom of the adjusting shell 8 and the support frame 3, so that when the upward force of the adjusting shell 8 is large, the return spring is stretched. The adjusting shell 8 is an inverted L-shape, so that when the adjusting shell 8 is fixed on the support frame 3, the top of the adjusting shell 8 can be located at the top of the support frame 3. An infrared sensor is fixed inside one of the adjusting shells 8 for detecting whether there is food and packaging boxes on the top when the conveyor belt 6 rotates;

[0046] In this embodiment, the infrared ranging sensor is an existing device with extensive and mature applications in the field of position detection. Its principle is as follows: "The infrared ranging sensor is a sensing device, a measuring system using infrared rays as a medium, with a wide measuring range and a short response time. It is mainly used in modern science and technology, national defense, and industry and agriculture. The infrared ranging sensor has a pair of infrared signal transmitting and receiving diodes. The infrared ranging sensor LDM301 uses a beam of infrared light to emit a beam of infrared light, which forms a reflection process after irradiating the object. After being reflected to the sensor, the signal is received, and then the CCD image processing is used to receive the time difference data between the emission and reception. After processing by the signal processor, the distance of the object is calculated. This can be used not only on natural surfaces, but also with reflective plates. It has a long measuring distance and a high frequency response, which is suitable for harsh industrial environments."

[0047] A positioning assembly 9 is provided on the top of the conveyor belt 6 for positioning and conveying the bottom package with food through the positioning assembly 9. A support assembly 10 for driving the positioning assembly 9 to rise and fall is installed inside the support frame 3 and between the two conveyor belts 6. The positioning assembly 9 is then driven to rise and fall by the operation of the support assembly 10.

[0048] The positioning assembly 9 includes a limit plate 21, and a placement slot is provided inside the top of the limit plate 21, so that the bottom packaging box with food can be placed through the placement slot and located at the top of the limit plate 21, and then the limit plate 21 is lifted or translated according to the limit plate 21. First pressure sensors 22 are fixed on both sides of the top of the limit plate 21, so that when the limit plate 21 rises and separates from the positioning block 7, the pressure when the first pressure sensor 22 contacts the adjustment shell 8 is used to judge whether the adjustment shell 8 continues to drive the limit plate 21 to rise. The bottom end of the limit plate 21 is slidably connected to the positioning block 7, so that the limit plate 21 can only be separated from the top of the positioning block 7 by rising, and the translation of the positioning block 7 drives the limit plate 21 to translate synchronously;

[0049] The support assembly 10 includes a protective shell 23, a lifting column 24, a limiting frame 25, a movable shell 26 and a tension spring 27. The protective shell 23 is located inside the support frame 3 and contacts the ground. The top of the protective shell 23 is slidably connected to the lifting column 24, so that the lifting column 24 can be raised and lowered inside the protective shell 23. The top of the lifting column 24 is threadedly connected to the limiting frame 25, and the limiting frame 25 is slidably connected to the bottom end of the limiting plate 21, so that the lifting column 24 drives the limiting frame 25 to rise, and the limiting frame 25 can drive the limiting plate 21 to rise by sliding. At the same time, the limiting frame 25 can be replaced as needed;

[0050] A movable shell 26 is slidably connected to the interior of the protective shell 23, and the movable shell 26 is fixed to the limit frame 25, so that the movable shell 26 can only be raised and lowered inside the protective shell 23. A tension spring 27 is fixed to the bottom of the movable shell 26 and located inside the protective shell 23, so that the rising of the movable shell 26 causes the tension spring 27 to stretch, and after the external force disappears, the movable shell 26 is lowered due to the rebound of the tension spring 27 and its own weight.

[0051] Preferably, a first push rod motor 28 is fixed inside the protective shell 23 and at the bottom of the movable shell 26, and a second pressure sensor 29 is fixed to the top of the push rod of the first push rod motor 28, so that the bottom position of the movable shell 26 can be limited and clarified by the second pressure sensor 29, so that the detection signal and signal transmission of the second pressure sensor 29 can be used to determine whether the conveying drive motor 5 can drive the transmission roller 4 to work.

[0052] The internal sliding connection of one end of the moving shell 26 is provided with a synchronous block 30, and a disengagement column 32 is fixed to one side of the synchronous block 30. A compression spring 33 is fixed to one end of the synchronous block 30 and located inside the moving shell 26, so that after the synchronous block 30 is squeezed, the squeezing slope 31 can be driven to completely enter the sliding moving shell 26, and the synchronous block 30 can drive the compression spring 33 to compress. The top of the synchronous block 30 away from the compression spring 33 is provided with an squeezing slope 31, and a disengagement plate 34 is fixed to the top of the protective shell 23 and at a position corresponding to the squeezing slope 31. The disengagement plate 34 An inclined surface is provided at one end of the bottom close to the disengagement column 32, so that when the rising of the movable shell 26 drives the disengagement column 32 to contact the disengagement plate 34, when the movable shell 26 continues to rise, the disengagement column 32 drives the extrusion inclined surface 31 to enter the interior of the movable shell 26 through the inclined surface at the bottom of the lifting column 24; a second air pump 36 is fixed to one end of the interior of the protective shell 23, and a push rod of the second air pump 36 is fixed to a working plate 35, so that when the second air pump 36 is working, it drives the working plate 35 to rise, and the working plate 35 is located at the bottom of the synchronous block 30 to drive the movable shell 26 to rise.

[0053] In this embodiment, a signal sensor of model SC200 can be fixed on the support frame 3, and a control panel can also be fixed. The signal sensor is connected to the conveying drive motor 5, the first air pump 13, the displacement drive motor 19, the first push rod motor 28, the second pressure sensor 29, and the second air pump 36, and can control the start and stop of the conveying drive motor 5, the first air pump 13, the displacement drive motor 19, the first push rod motor 28, the second pressure sensor 29, and the second air pump 36 through the received signal.

[0054] The capping mechanism 2 includes a fixed frame 11, a synchronous plate 12, a first air pump 13, a lifting plate 14, a guide column 15, a shell 16, a vacuum suction head 17, a displacement block 18, a displacement drive motor 19 and a displacement gear 20. The fixed frame 11 is located outside the conveying mechanism 1, and the bottom of the fixed frame 11 is in contact with the ground. The fixed frame 11 supports other structures in the capping mechanism 2. A synchronous plate 12 is provided on the top of the fixed frame 11. The first air pump 13 is fixed inside the synchronous plate 12. The push rod of the first air pump 13 is fixed. A lifting plate 14 is provided so that the operation of the first air pump 13 drives the lifting plate 14 to be raised and lowered. Guide posts 15 are fixed to the tops of both sides of the lifting plate 14. The guide posts 15 are slidably connected to the synchronous plate 12 and to the fixed frame 11, so that the guide posts 15 can adjust the height inside the synchronous plate 12 following the lifting of the lifting plate 14. At the same time, the guide posts 15 can slide horizontally inside the fixed frame 11, and the sliding of the guide posts 15 and the fixed frame 11 limits the travel of the synchronous plate 12 on the top of the fixed frame 11;

[0055] A vacuum suction head 17 is fixed to the bottom of the lifting plate 14, and the vacuum suction head 17 is connected to an external vacuum pump or air pump, so that the bottom of the vacuum suction head 17 can vacuum adsorb and release the top packaging box. A shell 16 is fixed to one side of the top of the fixed frame 11, and a displacement block 18 is slidably connected to the inside of the shell 16. The top of the displacement block 18 is fixed to the synchronous plate 12, so that the translation of the displacement block 18 inside the shell 16 drives the synchronous plate 12 to translate on the top of the fixed frame 11. A displacement drive motor 19 is fixed to the inside of the displacement block 18, and the output end of the displacement drive motor 19 is connected to the displacement gear 20. The bottom of the displacement gear 20 is meshed with a rack, and the rack is fixed to the shell 16, so that the displacement block 18 can be translated inside the shell 16 by rotating the displacement gear 20.

[0056] In this embodiment, the motor is a self-locking motor, which can normally drive the connected structure to rotate when it is powered on. When the motor stops working, it can prevent the connected structure from rotating through its own self-locking function.

[0057] The use process of the food packaging capping device and the use method thereof provided by the present invention is as follows: when in use, the bottom package with food is moved to the conveying mechanism 1 and the bottom package with food is positioned on the top of the limiting plate 21. At this time, the limiting plate 21 is positioned on two corresponding positioning blocks 7. At this time, the conveying drive motor 5 is started, and the conveying drive motor 5 drives the positioning blocks 7 to move through the transmission roller 4 and the conveyor belt 6, thereby driving the bottom package with food to move. When the infrared sensor on the adjustment shell 8 detects the bottom package with food, the conveying drive motor 5 stops working through the transmission of the signal, and the bottom package with food on the limiting plate 21 stops between the two adjustment shells 8.

[0058] Start the second air pump 36, and let the second air pump 36 drive the synchronous block 30 to rise through the working plate 35. The rising of the synchronous block 30 drives the lifting column 24 to rise through the movable shell 26. The lifting column 24 drives the limit plate 21 to rise through the limit frame 25, so that the bottom of the limit plate 21 is separated from the sliding positioning block 7. At the same time, the limit plate 21 is raised between the two adjustment shells 8. When the top of the first pressure sensor 22 contacts and is squeezed by the adjustment shell 8, the second air pump 36 is controlled to stop working according to the model of the first pressure sensor 22.

[0059] Then, the synchronous plate 12 and the lifting plate 14 are driven by the displacement drive motor 19 to perform translation adjustment. The first air pump 13 is used to drive the lifting plate 14 to adjust its height. Then, the vacuum suction head 17 at the bottom of the lifting plate 14 is used to vacuum adsorb the top package. The displacement drive motor 19 is used to adjust the lifting plate 14 to the top of the adjustment housing 8. At this time, the first air pump 13 is used to drive the lifting plate 14 and the vacuum suction head 17 to descend, so that the top package vacuum-adsorbed by the bottom of the vacuum suction head 17 is closed with the bottom package containing food, completing the capping. Then, the vacuum suction head 17 is allowed to release the adsorption of the top package.

[0060] At this time, the second air pump 36 continues to work, allowing the movable shell 26 to continue to rise through the limit frame 25, and then drives the adjusting shell 8 to rise through the return spring. At the same time, when the disengagement column 32 on one side of the synchronous block 30 contacts the disengagement plate 34, the synchronous block 30 and the disengagement column 32 enter the interior of the movable shell 26 through the inclined surface at the bottom of the disengagement plate 34. At this time, the movable shell 26 has no external extrusion force and falls due to the rebound after being stretched by the tension spring 27. At the same time, the limit plate 21 falls and is located inside the top of the corresponding positioning block 7. The movable shell 26 reduces the pressure on the second pressure sensor 29, allowing the second pressure sensor 29 to transmit a signal to control the conveying drive motor 5 to drive the conveyor belt 6 to move the package with the capping completed.

[0061] At the same time, according to the model of the second pressure sensor 29, the second air pump 36 controls the working plate 35 to descend, so that the working plate 35 squeezes the synchronization block 30 through the extrusion slope 31, so that the working plate 35 is located at the bottom end of the synchronization block 30, waiting for the next work.

[0062] Example 2

[0063] Based on the above embodiment 1, a method for using a food packaging capping device is disclosed, and the steps are as follows:

[0064] Step 1: Convey the bottom package with food to the inside of the limiting plate 21 at the top of the conveying mechanism 1, which can be conveyed manually or with the cooperation of other equipment;

[0065] Step 2: Start the conveyor drive motor 5 to drive the conveyor belt 6 to move, and use the infrared sensor to identify the position of the bottom package with food on the limit plate 21. If the bottom package with food is identified, the control panel or signal sensor controls the conveyor drive motor 5 to stop working through signal transmission, so that the limit plate 21 is located between the two adjustment shells 8;

[0066] Step 3: Start the second air pump 36 to allow the movable shell 26 to rise through the limit frame 25 to drive the limit plate 21 to rise, and control the second air pump 36 to stop working according to the signal of the first pressure sensor 22;

[0067] Step 4: Start the support frame 3, and use the vacuum suction head 17 to absorb the top package and transport the top package to the top of the adjustment shell 8;

[0068] Step 5: Start the first air pump 13, and let the first air pump 13 drive the vacuum suction head 17 and the top package to descend, completing the food packaging capping.

[0069] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A food packaging capping device, characterized in that: The invention comprises a conveying mechanism (1) and a capping mechanism (2), wherein the capping mechanism (2) is located outside the conveying mechanism (1), and the conveying mechanism (1) comprises a support frame (3), a transmission roller (4), a conveying drive motor (5), a conveyor belt (6), a positioning block (7), an adjustment shell (8), a positioning assembly (9) and a support assembly (10), wherein both ends of the support frame (3) are rotatably connected to the transmission roller (4), and one end of the support frame (3) is fixed with the conveying drive motor (5), and the output end of the conveying drive motor (5) is connected to one of the transmission rollers (4). The two sides of the outer sides of the two transmission rollers (4) and located on the inner side of the support frame (3) are connected by a conveyor belt (6), and positioning blocks (7) are evenly fixed on the outer sides of the two conveyor belts (6). The tops of the two sides of the support frame (3) are symmetrically slidably connected with adjustment shells (8), and a return spring is fixed between the bottom of the adjustment shell (8) and the support frame (3). A positioning component (9) is provided on the top of the conveyor belt (6), and a support component (10) for driving the positioning component (9) to rise and fall is installed on the inner side of the support frame (3) and located between the two conveyor belts (6).

2. A food packaging capping device according to claim 1, characterized in that: An infrared sensor is fixed inside one of the adjustment shells (8).

3. A food packaging capping device according to claim 1, characterized in that: The positioning assembly (9) comprises a limiting plate (21), a placement groove is provided inside the top of the limiting plate (21), first pressure sensors (22) are fixed on both sides of the top of the limiting plate (21), and the bottom end of the limiting plate (21) is slidably connected to the positioning block (7).

4. A food packaging capping device according to claim 1, characterized in that: The support assembly (10) comprises a protective shell (23), a lifting column (24), a limiting frame (25), a movable shell (26) and a tension spring (27); the top of the protective shell (23) is internally slidably connected to the lifting column (24); the top of the lifting column (24) is threadedly connected to the limiting frame (25), and the limiting frame (25) is slidably connected to the bottom end of the limiting plate (21); the interior of the protective shell (23) is internally slidably connected to the movable shell (26), and the movable shell (26) is fixed to the limiting frame (25); and the tension spring (27) is fixed at the bottom of the movable shell (26) and located inside the protective shell (23).

5. A food packaging capping device according to claim 4, characterized in that: A first push rod motor (28) is fixed inside the protective shell (23) and at the bottom of the movable shell (26), and a second pressure sensor (29) is fixed on the top of the push rod of the first push rod motor (28).

6. A food packaging capping device according to claim 4, characterized in that: The movable shell (26) is internally slidably connected with a synchronous block (30), a disengagement column (32) is fixed on one side of the synchronous block (30), a compression spring (33) is fixed on one end of the synchronous block (30) and located inside the movable shell (26), an extrusion inclined surface (31) is provided on the top of the synchronous block (30) away from the compression spring (33), a disengagement plate (34) is fixed at the top of the protective shell (23) and at a position corresponding to the extrusion inclined surface (31), an inclined surface is provided on the bottom of the disengagement plate (34) near one end of the disengagement column (32), a second air pump (36) is fixed on one end inside the protective shell (23), and a working plate (35) is fixed to the push rod of the second air pump (36).

7. The food packaging capping device according to claim 1, characterized in that: The capping mechanism (2) comprises a fixed frame (11), a synchronous plate (12), a first air pump (13), a lifting plate (14), a guide column (15) and a vacuum suction head (17). The fixed frame (11) is located outside the conveying mechanism (1). A synchronous plate (12) is provided on the top of the fixed frame (11). The first air pump (13) is fixed inside the synchronous plate (12). The push rod of the first air pump (13) is fixed to the lifting plate (14). Guide columns (15) are fixed on the tops of both sides of the lifting plate (14). The guide columns (15) and the synchronous plate (12) and the guide columns (15) and the fixed frame (11) are all slidably connected. The vacuum suction head (17) is fixed on the bottom of the lifting plate (14).

8. A food packaging capping device according to claim 7, characterized in that: The capping mechanism (2) comprises a housing (16), a displacement block (18), a displacement drive motor (19) and a displacement gear (20); the housing (16) is fixed to one side of the top of the fixing frame (11); the displacement block (18) is slidably connected inside the housing (16); the top of the displacement block (18) is fixed to the synchronous plate (12); the displacement drive motor (19) is fixed inside the displacement block (18); the output end of the displacement drive motor (19) is connected to the displacement gear (20); the bottom of the displacement gear (20) is meshed with a rack, and the rack is fixed to the housing (16).

9. A method for using a food packaging capping device, used for the food packaging capping device according to any one of claims 1 to 8, characterized in that: Here are the steps: S1: conveying the bottom package with food to the inside of the limiting plate (21) at the top of the conveying mechanism (1), which can be conveyed manually or with the cooperation of other equipment; S2: starting the conveying drive motor (5), driving the conveyor belt (6) to move, and identifying the position of the bottom package with food on the limiting plate (21) through the infrared sensor; S3: Start the second air pump (36), let the movable shell (26) rise through the limit frame (25) to drive the limit plate (21) to rise, and control the second air pump (36) to stop working through the signal of the first pressure sensor (22); S4: Start the support frame (3), and suck the top package through the vacuum suction head (17), and transport the top package to the top of the adjustment shell (8); S5: Start the first air pump (13), and let the first air pump (13) drive the vacuum suction head (17) and the top package to descend, completing the food packaging capping.

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