Automatic food packaging and film sealing device

Abstract

The invention relates to the technical field of film sealing devices, and discloses an automatic food packaging film sealing device which comprises a base. A food cartridge; the device comprises a base and an adaptive mechanism, the adaptive mechanism is arranged on the base and used for bearing food barrels of different sizes, the adaptive mechanism comprises two hollow seat blocks, the two hollow seat blocks are symmetrically arranged and fixedly connected to the base, and a first telescopic motor is fixedly connected to the inner wall of each hollow seat block. According to the automatic food packaging and film sealing device, an adaptive mechanism is arranged, a first telescopic motor drives a hollow semi-ring block to horizontally adjust the transverse position, and an electric inflation and deflation pump is matched to inflate the hollow semi-ring block through a corrugated pipe, so that a hard extension rod in a hollow sleeve overcomes the tensile force of a first spring to stretch out under the gas pressure; and the magnetic force circular truncated cone block is driven to make contact with the side wall of the top of the food barrel, food barrels of different sizes can be adapted, stable bearing and fixing are achieved, and the adaptability to diversified packaging requirements is improved.

Description

Technical Field

[0001] This invention relates to the field of sealing device technology, specifically to an automatic food packaging sealing device. Background Technology

[0002] In the food processing industry, automated food packaging and sealing devices are key equipment for achieving large-scale and standardized food production. The adapter mechanism used to receive the food containers is a core component ensuring packaging accuracy and efficiency. In existing technologies, the adapter mechanism of automated food packaging and sealing devices often employs a fixed-size rigid support structure or a manually adjustable clamping assembly to achieve the positioning and fixation of the food containers.

[0003] However, with the diversification of food consumption market demands, the specifications of food containers are becoming increasingly diverse, and traditional fitting mechanisms are gradually revealing obvious shortcomings: fixed-size support structures can only fit food containers of a single specification. When different sizes of food containers need to be packaged, manual disassembly and replacement of molds or support components of the corresponding size are required. This operation is cumbersome and time-consuming, seriously affecting the continuity of production. In particular, in the scenario of small-batch, multi-specification food production, frequent replacement of parts leads to a significant reduction in production efficiency. Summary of the Invention

[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides an automatic food packaging and sealing device, which solves the problem that traditional adapter mechanisms, due to their fixed-size rigid structures or manually adjustable components, can only adapt to a single size of food container, and the operation of changing parts is cumbersome and time-consuming, resulting in a significant reduction in production efficiency.

[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: an automatic food packaging and sealing device, comprising: a base; a food cylinder; and an adapter mechanism. The adapter mechanism is disposed on the base and is used to support food cylinders of different sizes. The adapter mechanism includes: hollow seat blocks, two of which are symmetrically arranged and fixedly connected to the base. A telescopic motor is fixedly connected to the inner wall of each hollow seat block. The output shaft of the telescopic motor is fixedly connected to a hollow semi-ring block. An electric inflation / deflation pump is fixedly connected to the top of the base. The electric inflation / deflation pump is connected to the hollow semi-ring block. The device includes a corrugated pipe, and a plurality of hollow sleeves arranged in a circumferential array on the inner wall of the hollow semi-ring block. The inner wall of each hollow sleeve communicates with the inner wall of the hollow semi-ring block. A rigid extension rod is piston-connected to the inner wall of each hollow sleeve. A spring connects the inner wall of the hollow sleeve and the rigid extension rod. A magnetic frustum block is fixedly connected to the top of the rigid extension rod for supporting the food container. A rolling mechanism, including a food-grade film, is mounted on the hollow base block for releasing and rewinding the food-grade film. A sealing mechanism, mounted on the base, is used for heat-sealing the food-grade film.

[0006] Preferably, the outer wall of the telescopic motor is provided with a motor support frame, and the motor support frame on the telescopic motor is connected to the inner wall of the hollow seat block.

[0007] Preferably, the output shaft of the telescopic motor is slidably connected to the inner wall of the hollow seat block, one end of the spring is connected to the inner wall of the hollow sleeve, and the other end of the spring is fixedly connected to the rigid extension rod.

[0008] Preferably, one end of the bellows is connected to the output end of the electric inflation / deflation pump, and the other end of the bellows is connected to the hollow semi-ring block.

[0009] Preferably, the rolling mechanism includes a left support and a right support, which are fixedly connected to the top of the hollow seat block. The left support is provided with a winding roller, an upper left guide roller, and a lower left guide roller, and the right support is provided with an electric take-up roller, an upper right guide roller, and a lower right guide roller. One end of the food-grade film is connected to the electric take-up roller, and the other end of the food-grade film is connected to the winding roller. The food-grade film passes through the surfaces of the upper left guide roller, the lower left guide roller, the upper right guide roller, and the lower right guide roller.

[0010] Preferably, the sealing mechanism includes a support rod, one end of which is fixedly connected to a base, and the other end of which is fixedly connected to a telescopic motor. The output shaft of the telescopic motor is fixedly connected to a hollow cylindrical frame. A positive conductive block and a negative conductive block are connected through the hollow cylindrical frame. Both the positive and negative conductive blocks are T-shaped. The tops of the positive and negative conductive blocks penetrate the hollow cylindrical frame and extend beyond its outer wall for connection to an external power source. A fixed bracket is fixedly connected to the inner wall of the hollow cylindrical frame, and several annular heating elements of different diameters are fixedly connected to the bottom of the fixed bracket. A heat-insulating layer is provided between adjacent annular heating elements. Two insulating hollow cylinders are symmetrically fixedly connected to the top of each annular heating element. Magnetic guide blocks are slidably connected to the inner wall of the insulating hollow cylinders. A spring is connected between the magnetic guide blocks and the insulating hollow cylinders. A magnetic guide post is fixedly connected to the top of the magnetic guide blocks. The magnetic guide post penetrates the insulating hollow cylinder and is slidably connected to the inner wall of the insulating hollow cylinder. The bottoms of the positive and negative conductive blocks are located at the top of the insulating hollow cylinders. The side walls of the insulating hollow cylinders are insulated. The insulating hollow cylinders are electrically connected to the electrodes of the annular heating elements.

[0011] Preferably, a sealing element is provided between the rigid extension rod and the inner wall of the hollow sleeve to prevent gas leakage from the hollow sleeve.

[0012] Preferably, an elastic buffer layer is provided on the contact surface of the magnetic frustum block to buffer the contact impact force between the magnetic frustum block and the food cylinder.

[0013] Preferably, both ends of the corrugated pipe are fixedly connected to the electric air pump and the hollow semi-ring block by clamps to prevent the corrugated pipe from falling off.

[0014] (III) Beneficial Effects Compared with the prior art, the present invention provides an automatic food packaging and sealing device, which has the following beneficial effects: 1. This automatic food packaging and sealing device utilizes an adapter mechanism. A telescopic motor drives a hollow semi-ring block to adjust its horizontal position. An electric inflation / deflation pump inflates the hollow semi-ring block through a corrugated pipe, causing a rigid extension rod inside the hollow sleeve to extend under gas pressure, overcoming the spring tension. This extends the rod, causing a magnetic frustum block to contact the top side wall of the food container. This device can adapt to food containers of different sizes, achieving stable support and fixation, and improving adaptability to diverse packaging needs.

[0015] 2. This automatic food packaging and sealing device utilizes a rolling mechanism. An electric take-up roller actively rotates as a power source, passively releasing the food-grade film from the winding roller. Guided and tensioned by the upper left guide roller, lower left guide roller, upper right guide roller, and lower right guide roller, the food-grade film is stably conveyed to the top of the food container, ensuring the flatness and positional accuracy of the film during conveying and providing a reliable film covering foundation for subsequent sealing.

[0016] 3. This automatic food packaging and sealing device utilizes a sealing mechanism. A telescopic motor drives a hollow cylindrical frame and annular heating elements to move downwards. When the annular heating element of the corresponding diameter is directly facing the magnetic frustum block, the magnetic repulsion between the magnetic frustum block and the magnetic guide block causes the magnetic guide column to move upwards and contact the positive and negative conductive blocks, thereby energizing and heating the annular heating element. Combined with a heat insulation layer to avoid heat interference, it can accurately adapt to food cylinders of different diameters, performing stable and reliable hot melt sealing of food-grade films, thus improving sealing quality and efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the cross-section of the hollow seat block in this invention; Figure 3 This is a schematic diagram of the cross-section of the hollow semi-ring block in this invention; Figure 4 This is a schematic diagram of the cross-section of the hollow sleeve in this invention; Figure 5 This is a schematic diagram of the rolling mechanism of the present invention; Figure 6 This is a schematic diagram of the hollow cylindrical frame structure of the present invention; Figure 7 This is a schematic diagram of the cross-section of the hollow cylindrical frame in this invention; Figure 8 This is a schematic diagram of the structure of the annular heating element of the present invention; Figure 9 This is a schematic diagram of the cross-section of the insulating hollow cylinder of the present invention.

[0018] In the diagram: 1. Base; 2. Adaptor mechanism; 21. Hollow seat block; 22. Telescopic motor one; 23. Electric air pump; 24. Corrugated pipe; 25. Hollow semi-ring block; 26. Hollow sleeve; 27. Rigid extension rod; 28. Spring one; 29. ​​Magnetic frustum block; 3. Rolling mechanism; 31. Left support; 32. Right support; 33. Winding roller; 34. Electric take-up roller; 35. Food-grade film; 36. Upper left guide roller; 37. Lower left guide roller; 38. Upper right guide roller; 39. Lower right guide roller; 4. Sealing mechanism; 41. Support rod; 42. Telescopic motor II; 43. Hollow cylindrical frame; 44. Positive conductive block; 45. Negative conductive block; 46. Fixed bracket; 47. Ring-shaped heating element; 48. Heat insulation layer; 49. Insulating hollow cylinder; 410. Magnetic guide block; 411. Spring II; 412. Magnetic guide column; 5. Food container. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Please see Figures 1-9An automatic food packaging and sealing device includes: a base 1; a food cylinder 5; and an adapter mechanism 2. The adapter mechanism 2 is mounted on the base 1 and is used to receive food cylinders 5 of different sizes. The adapter mechanism 2 includes: two hollow seat blocks 21 symmetrically arranged, which are fixedly connected to the base 1. A telescopic motor 22 is fixedly connected to the inner wall of the hollow seat block 21. The output shaft of the telescopic motor 22 is fixedly connected to a hollow semi-ring block 25. An electric air pump 23 is fixedly connected to the top of the base 1. A corrugated pipe 24 connects the electric air pump 23 and the hollow semi-ring block 25. A circular array of... The device contains several hollow sleeves 26, the inner walls of which communicate with the inner walls of hollow semi-ring blocks 25. A rigid extension rod 27 is piston-connected to the inner wall of each hollow sleeve 26. A spring 28 connects the inner wall of the hollow sleeve 26 to the rigid extension rod 27. A magnetic frustum block 29 is fixedly connected to the top of the rigid extension rod 27 to support the food container 5. The base 1 provides fixed support for two symmetrical hollow seats 21. A telescopic motor 22 fixed to the inner wall of each hollow seat 21 has its output shaft connected to the hollow semi-ring block 25, driving the hollow semi-ring block 25 to move horizontally to adjust its lateral position. Simultaneously, an electric inflation / deflation pump 23 fixed to the top of the base 1 connects to the hollow semi-ring block 25 via a bellows pipe 24. The hollow semi-ring block 25 is connected, and air is charged and discharged into the hollow semi-ring block 25. Several hollow sleeves 26 arranged in a circular array on the inner wall of the hollow semi-ring block 25 are connected to the inner wall of the hollow semi-ring block 25, allowing gas to enter the hollow sleeves 26. The rigid extension rod 27 connected to the piston on the inner wall of the hollow sleeve 26 extends outward under the action of gas pressure, overcoming the tension of the spring 28. The extension length of the rigid extension rod 27 is determined by the amount of air introduced by the electric charging and discharging pump 23, which drives the magnetic frustum block 29 fixed at the top of the rigid extension rod 27 to contact the top side wall of the food cylinder 5, realizing the receiving of food cylinders 5 of different sizes; the rolling mechanism 3 includes a food-grade film 35, and the rolling mechanism 3 is set in the hollow seat. On block 21, a food-grade film 35 is released and wound up; sealing mechanism 4 is set on base 1 and is used to heat-seal the food-grade film 35; a motor support frame is provided on the outer wall of telescopic motor 22, and the motor support frame on telescopic motor 22 is connected to the inner wall of hollow base block 21; the output shaft of telescopic motor 22 is slidably connected to the inner wall of hollow base block 21; one end of spring 28 is connected to the inner wall of hollow sleeve 26, and the other end of spring 28 is fixedly connected to rigid extension rod 27; one end of corrugated pipe 24 is connected to the output end of electric inflation / deflation pump 23, and the other end of corrugated pipe 24 is connected to hollow semi-ring block 25.

[0021] The rolling mechanism 3 includes a left support 31 and a right support 32, which are fixedly connected to the top of the hollow seat block 21. The left support 31 is equipped with a winding roller 33, an upper left guide roller 36, and a lower left guide roller 37. The right support 32 is equipped with an electric take-up roller 34, an upper right guide roller 38, and a lower right guide roller 39. One end of the food-grade film 35 is connected to the electric take-up roller 34, and the other end is connected to the winding roller 33. The food-grade film 35 passes through the surfaces of the upper left guide roller 36, lower left guide roller 37, upper right guide roller 38, and lower right guide roller 39. The left support 31 and right support 32 are fixedly connected to the top of the hollow seat block 21 to provide support. The winding roller 33 installed on the left support 31 is used to wind the initial roll of food-grade film 35. The electric take-up roller 34 installed on the right support 32 is used as a power source to rotate actively. One end of the food-grade film 35 is connected to the electric take-up roller 34 and the other end is connected to the winding roller 33. When the electric take-up roller 34 rotates, it pulls the food-grade film 35 to be passively released from the winding roller 33. The released food-grade film 35 passes through the surface of the upper left guide roller 36 and the lower left guide roller 37 on the left support 31 and the upper right guide roller 38 and the lower right guide roller 39 on the right support 32 in sequence. The guide rollers change the direction of the film and maintain the tension, so as to achieve stable delivery of the food-grade film 35 and provide continuous film material for the subsequent sealing mechanism 4.

[0022] The sealing mechanism 4 includes a support rod 41, one end of which is fixedly connected to the base 1, and the other end of which is fixedly connected to a telescopic motor 42. The output shaft of the telescopic motor 42 is fixedly connected to a hollow cylindrical frame 43. A positive conductive block 44 and a negative conductive block 45 are connected through the hollow cylindrical frame 43. Both the positive and negative conductive blocks 44 and 45 are T-shaped. The tops of the positive and negative conductive blocks 44 and 45 penetrate the hollow cylindrical frame 43 and extend out of the outer wall of the hollow cylindrical frame 43 for connection to an external power source. A fixed bracket 46 is fixedly connected to the inner wall of the hollow cylindrical frame 43, and the bottom of the fixed bracket 46 is fixedly connected to... There are several annular heating elements 47 of different diameters. A heat-insulating layer 48 is provided between adjacent annular heating elements 47. Two insulating hollow cylinders 49 are symmetrically fixed to the top of each annular heating element 47. Magnetic guide blocks 410 are slidably connected to the inner wall of the insulating hollow cylinders 49. A spring 411 connects the magnetic guide blocks 410 and the insulating hollow cylinders 49. A magnetic guide post 412 is fixedly connected to the top of the magnetic guide blocks 410, and the magnetic guide post 412 penetrates the insulating hollow cylinders 49. The magnetic guide post 412 is slidably connected to the inner wall of the insulating hollow cylinders 49. The bottoms of the positive electrode conductive block 44 and the negative electrode conductive block 45 are located in the insulating hollow cylinders. The top of the insulating hollow cylinder 49 has insulated side walls. The insulating hollow cylinder 49 is electrically connected to the electrodes of the annular heating element 47. One end of the support rod 41 is fixedly connected to the base 1 for support, and the other end is fixedly connected to the telescopic motor 42. The output shaft of the telescopic motor 42 is fixedly connected to the hollow cylindrical frame 43 to drive its up and down movement. The hollow cylindrical frame 43 is connected through a T-shaped positive conductive block 44 and a negative conductive block 45. The tops of the positive conductive block 44 and the negative conductive block 45 extend out of the outer wall of the hollow cylindrical frame 43 for connecting to an external power source, and the bottoms are located at the top of the insulating hollow cylinder 49 to transmit power. The inner wall of the hollow cylindrical frame 43 is fixedly connected to a fixing bracket 46. A number of annular heating elements 47 of different diameters are fixedly connected to the bottom of the fixed bracket 46. A heat insulation layer 48 is provided between adjacent annular heating elements 47 to avoid heat interference. Two insulating hollow cylinders 49 are symmetrically fixed to the top of each annular heating element 47. A magnetic guide block 410 is slidably connected to the inner wall of the insulating hollow cylinder 49. A spring 411 is connected between the magnetic guide block 410 and the insulating hollow cylinder 49 to provide a restoring force. A magnetic guide post 412 is fixedly connected to the top of the magnetic guide block 410. The magnetic guide post 412 penetrates the insulating hollow cylinder 49 and is slidably connected to its inner wall. The side wall of the insulating hollow cylinder 49 is insulated and electrically connected to the electrodes of the annular heating element 47 to conduct current.When the food-grade film 35 is at the top of the food cylinder 5, the telescopic motor 42 drives the hollow cylindrical frame 43 to move downwards, which in turn drives the fixed bracket 46 and the annular heating element 47 to move downwards until the annular heating element 47 of the corresponding diameter is directly facing the magnetic frustum block 29. The magnetic frustum block 29 and the magnetic guide block 410 inside the insulating hollow cylinder 49 of the corresponding annular heating element 47 repel each other magnetically, causing the magnetic guide block 410 to overcome the elastic force of the spring 411 and drive the magnetic guide column 412 upwards, contacting the positive conductive block 44 and the negative conductive block 45. External power is then introduced into the annular heating element 47 through the positive conductive block 44, the negative conductive block 45, the magnetic guide column 412, the magnetic guide block 410, and the insulating hollow cylinder 49. The corresponding annular heating element 47 heats up and heats the food-grade film 35 for sealing, achieving precise heat-sealing of food cylinders 5 of different diameters.

[0023] A seal is provided between the rigid extension rod 27 and the inner wall of the hollow sleeve 26 to prevent gas leakage from the hollow sleeve 26. An elastic buffer layer is provided on the contact surface of the magnetic frustum block 29 to buffer the contact impact force between the magnetic frustum block 29 and the food container 5. The two ends of the corrugated pipe 24 are fixedly connected to the electric air pump 23 and the hollow semi-ring block 25 by clamps to prevent the corrugated pipe 24 from falling off.

[0024] In summary, this automatic food packaging and sealing device, when in use, is placed in the working position, with the base 1 providing overall support. The food container 5 to be packaged is placed in the receiving area of ​​the adapter 2. After the device is started, the telescopic motors 22 fixed to the inner walls of the two symmetrically fixed hollow seat blocks 21 on the base 1 operate. Their output shafts drive the hollow semi-ring block 25 to move horizontally to adjust its lateral position, so that the hollow semi-ring block 25 is positioned appropriately outside the food container 5. At the same time, the electric inflation / deflation pump 23 fixed to the top of the base 1 passes through the corrugated... The tube 24 fills the hollow semi-annular block 25 with gas. The gas enters the hollow sleeve 26 through a series of hollow sleeves 26 arranged in a circular array on the inner wall of the hollow semi-annular block 25. This pushes the rigid extension rod 27, which is connected to the piston on the inner wall of the hollow sleeve 26, to extend outward against the tension of the spring 28. The extension length of the rigid extension rod 27 is adjusted according to the amount of gas supplied by the electric air pump 23. This causes the magnetic frustum block 29 fixed at the top of the rigid extension rod 27 to contact the top side wall of the food cylinder 5. Through mechanical support, stable support for food cylinders 5 of different sizes is achieved.

[0025] Subsequently, the rolling mechanism 3 is activated, and the left support 31 and right support 32 fixed on the top of the hollow seat block 21 provide support. The electric winding roller 34 on the right support 32 rotates actively, pulling the food-grade film 35 to be passively released from the winding roller 33 on the left support 31. The released food-grade film 35 passes in sequence through the surfaces of the upper left guide roller 36 and lower left guide roller 37 on the left support 31 and the upper right guide roller 38 and lower right guide roller 39 on the right support 32. The guide rollers change the direction of the film and maintain the tension, so that the food-grade film 35 is stably transported to the top of the food cylinder 5.

[0026] When the food-grade film 35 covers the top of the food cylinder 5, the sealing mechanism 4 is activated. The support rod 41 fixed on the base 1 supports the telescopic motor 42. The output shaft of the telescopic motor 42 drives the hollow cylindrical frame 43 to move downward. The hollow cylindrical frame 43 drives the fixed bracket 46 fixed on the inner wall and several annular heating elements 47 of different diameters at the bottom of the fixed bracket 46 to move downward synchronously. The heat insulation layer 48 between adjacent annular heating elements 47 avoids heat interference until the annular heating element 47 matches the size of the food cylinder 5. Facing the magnetic frustum block 29, the magnetic guide blocks 410 inside the two insulating hollow cylinders 49 symmetrically fixed to the top of the annular heating element 47 repel each other due to magnetic force. The magnetic guide blocks 410 overcome the elastic force of the spring 411 and slide upward on the inner wall of the insulating hollow cylinder 49, causing the magnetic guide post 412 fixed at its top to move upward and penetrate through the insulating hollow cylinder 49 until the top of the magnetic guide post 412 contacts the T-shaped positive electrode conductive block 44 and the negative electrode conductive block 44 that are connected through the hollow cylindrical frame 43. At the bottom of the positive conductive block 45, and at the top of the negative conductive block 45, the positive conductive block 44 and the negative conductive block 45 extend out of the outer wall of the hollow cylindrical frame 43 and are connected to an external power source. Current is sequentially conducted through the positive conductive block 44, the magnetic guide post 412, the magnetic guide block 410, and the insulating hollow cylinder 49 to the electrodes of the annular heating element 47. The annular heating element 47 is energized and heats up, performing a heat-sealing process on the food-grade film 35 covering the top of the food cylinder 5. After sealing, the telescopic motor 42 drives the hollow cylindrical frame 43 to move upwards and reset. Under the pulling force of spring 411, guide block 410 moves downward, magnetic guide post 412 separates from positive conductive block 44 and negative conductive block 45, annular heating element 47 is de-energized, electric winding roller 34 continues to rotate to wind up used food-grade film 35, electric air pump 23 of adapter mechanism 2 releases air, rigid extension rod 27 retracts under the pulling force of spring 28, magnetic frustum block 29 separates from food cylinder 5, food cylinder 5 with sealed film is removed, realizing the whole process of automatic food packaging and sealing.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. An automatic food packaging and sealing device, characterized in that: include: Base (1); Food container (5); The adapter (2) is mounted on the base (1) and is used to support food containers (5) of different sizes. The adapter (2) includes: Hollow seat block (21), two hollow seat blocks (21) are symmetrically arranged, and the two hollow seat blocks (21) are fixedly connected to the base (1). A telescopic motor (22) is fixedly connected to the inner wall of the hollow seat block (21). A hollow semi-ring block (25) is fixedly connected to the output shaft of the telescopic motor (22). An electric inflation / deflation pump (23) is fixedly connected to the top of the base (1). A bellows pipe (24) is connected between the electric inflation / deflation pump (23) and the hollow semi-ring block (25). The hollow semi-ring block (25) has a plurality of hollow sleeves (26) arranged in a circular array on its inner wall. The inner wall of the hollow sleeve (26) is connected to the inner wall of the hollow semi-ring block (25). A rigid extension rod (27) is piston-connected to the inner wall of the hollow sleeve (26). A spring (28) is connected between the inner wall of the hollow sleeve (26) and the rigid extension rod (27). A magnetic frustum block (29) is fixedly connected to the top of the rigid extension rod (27) for receiving the food tube (5). The rolling mechanism (3) includes a food-grade film (35), which is disposed on the hollow seat block (21) for releasing and rewinding the food-grade film (35). A sealing mechanism (4) is provided on a base (1) for heat-sealing food-grade film (35).

2. The automatic food packaging and sealing device according to claim 1, characterized in that: The outer wall of the telescopic motor (22) is provided with a motor support frame, and the motor support frame on the telescopic motor (22) is connected to the inner wall of the hollow seat block (21).

3. The automatic food packaging and sealing device according to claim 1, characterized in that: The output shaft of the telescopic motor (22) is slidably connected to the inner wall of the hollow seat block (21), one end of the spring (28) is connected to the inner wall of the hollow sleeve (26), and the other end of the spring (28) is fixedly connected to the rigid extension rod (27).

4. The automatic food packaging and sealing device according to claim 1, characterized in that: One end of the bellows (24) is connected to the output end of the electric inflation / deflation pump (23), and the other end of the bellows (24) is connected to the hollow semi-ring block (25).

5. The automatic food packaging and sealing device according to claim 1, characterized in that: The rolling mechanism (3) includes a left support (31) and a right support (32). The left support (31) and the right support (32) are fixedly connected to the top of the hollow seat block (21). The left support (31) is provided with a winding roller (33), an upper left guide roller (36), and a lower left guide roller (37). The right support (32) is provided with an electric take-up roller (34), an upper right guide roller (38), and a lower right guide roller (39). One end of the food-grade film (35) is connected to the electric take-up roller (34), and the other end of the food-grade film (35) is connected to the winding roller (33). The food-grade film (35) passes through the surfaces of the upper left guide roller (36), the lower left guide roller (37), the upper right guide roller (38), and the lower right guide roller (39).

6. The automatic food packaging and sealing device according to claim 1, characterized in that: The sealing mechanism (4) includes a support rod (41), one end of which is fixedly connected to the base (1), and the other end of which is fixedly connected to a telescopic motor (42). The output shaft of the telescopic motor (42) is fixedly connected to a hollow cylindrical frame (43). A positive conductive block (44) and a negative conductive block (45) are connected through the hollow cylindrical frame (43). Both the positive conductive block (44) and the negative conductive block (45) are T-shaped. The tops of the positive conductive block (44) and the negative conductive block (45) penetrate the hollow cylindrical frame (43) and extend out of the outer wall of the hollow cylindrical frame (43) for connection to an external power source. A fixed bracket (46) is fixedly connected to the inner wall of the hollow cylindrical frame (43). Several annular heating elements (47) of different diameters are fixedly connected to the bottom of the fixed bracket (46). A heat-insulating layer (48) is provided between the annular heating elements (47). Two insulating hollow cylinders (49) are symmetrically fixedly connected to the top of each annular heating element (47). A magnetic guide block (410) is slidably connected to the inner wall of the insulating hollow cylinder (49). A spring (411) is connected between the magnetic guide block (410) and the insulating hollow cylinder (49). A magnetic guide column (412) is fixedly connected to the top of the magnetic guide block (410). The magnetic guide column (412) penetrates the insulating hollow cylinder (49). The magnetic guide column (412) is slidably connected to the inner wall of the insulating hollow cylinder (49). The bottom of the positive electrode conductive block (44) and the negative electrode conductive block (45) are located at the top of the insulating hollow cylinder (49). The side wall of the insulating hollow cylinder (49) is insulated. The insulating hollow cylinder (49) is electrically connected to the electrode of the annular heating element (47).

7. The automatic food packaging and sealing device according to claim 1, characterized in that: A seal is provided between the rigid extension rod (27) and the inner wall of the hollow sleeve (26) to prevent gas leakage from the hollow sleeve (26).

8. The automatic food packaging and sealing device according to claim 1, characterized in that: An elastic buffer layer is provided on the contact surface of the magnetic frustum block (29) to buffer the contact impact force between the magnetic frustum block (29) and the food cylinder (5).

9. The automatic food packaging and sealing device according to claim 1, characterized in that: The two ends of the corrugated pipe (24) are fixedly connected to the electric air pump (23) and the hollow semi-ring block (25) by clamps to prevent the corrugated pipe (24) from falling off.

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