A pressing device for an aluminum foil lunch box production system

Abstract

The present invention discloses a pressing device for an aluminum foil lunch box production system, and relates to the technical field of aluminum foil lunch box pressing equipment. The present invention is a machine platform fixedly installed on a machine base through a plurality of guide columns, and also includes: a hydraulic press fixedly installed on the machine platform; a die part, the die part includes a fixed plate fixedly installed at the bottom of the pressing plate; a lower die part, the lower die part includes a mounting plate installed in the machine base through a compression assembly; and a demoulding part. The advantages are: the present invention can convert part of the pressure during the pressing process, and automatically push the lunch box off the bottom film by the pressure after the pressing is completed, so as to facilitate the separation between the lunch box and the bottom mold, ensure the smooth subsequent demoulding process, effectively reduce the demoulding difficulty, and improve the demoulding speed. In addition, the bottom film can ensure integrity and sealing during the pressing process, and avoid the problem of poor pressing quality of the lunch box due to the presence of gaps on the upper surface of the bottom mold.

Description

Technical Field

[0001] The invention relates to the technical field of aluminum foil lunch box pressing equipment, and in particular to a pressing device for an aluminum foil lunch box production system. Background Art

[0002] Aluminum foil lunch box is a kind of tableware made of aluminum alloy. With the development of the takeout industry, aluminum foil lunch box is used more and more widely. In the production process of aluminum foil lunch box, automatic pressing equipment is generally used to complete the pressing and forming process of aluminum foil lunch box.

[0003] When the existing pressing equipment is used for demoulding, the formed aluminum foil lunch box is adsorbed by the pneumatic mechanism installed on the upper mold and then taken out. However, in order to meet the gas circulation, corresponding holes need to be opened on the mold. If the holes are large or irregular in size, the pressed lunch box will be uneven in shape or defective, affecting the quality of the lunch box. In addition, it is difficult to demould the lunch box only by adsorbing the upper mold. In particular, when the lubrication system fails to work normally, the connection between the lunch box and the bottom mold is too tight, resulting in the inability to successfully complete the demoulding. Therefore, it is necessary to design a pressing device for an aluminum foil lunch box production system. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a pressing device for an aluminum foil lunch box production system, which solves the problems of difficulty in demoulding the lunch boxes and defects in production quality raised in the above-mentioned background technology.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A pressing device for an aluminum foil lunch box production system includes a machine platform fixedly mounted on a machine base through a plurality of guide columns, and further includes:

[0007] A hydraulic press is fixedly mounted on the machine platform, and a pressing plate slidably connected to a plurality of guide posts is fixedly connected to the output end of the hydraulic press;

[0008] A die part, the die part comprises a fixed plate fixedly mounted on the bottom of the pressing plate, a plurality of upper dies are fixedly mounted on the bottom of the fixed plate, and a positioning plate is mounted on the bottom of the fixed plate through a plurality of telescopic components;

[0009] A lower mold part, the lower mold part includes a mounting plate installed in the machine base through a compression assembly, and a plurality of bottom molds matched with corresponding upper molds are fixedly installed on the top of the mounting plate;

[0010] The demoulding part includes a plurality of annular grooves opened on the upper surface of the corresponding bottom mold, and a sealing ring is sealed and slidably installed in each annular groove, each bottom mold is provided with an installation cavity interconnected with the corresponding annular groove, a plurality of connecting components are installed between each installation cavity and the corresponding sealing ring, a pressure regulating component is installed between the compression component and each installation cavity, and a plurality of control components matching the corresponding pressure regulating components are installed on the fixed plate.

[0011] Furthermore, the telescopic assembly includes a fixed column fixedly installed on the upper end of the positioning plate, a connecting sleeve matched with the fixed column is fixedly installed on the bottom of the fixed plate, and a spring is installed between the fixed column and the connecting sleeve.

[0012] Furthermore, the compression assembly includes a sealing frame fixedly installed in the machine base, and a sealing plate is sealingly and slidably installed in the sealing frame, the top of the sealing plate is fixedly connected to the mounting plate via a connecting plate, and a plurality of circular columns sealingly and slidably connected to the sealing plate are fixedly installed in the machine base, and each of the circular columns is sleeved with a compression spring.

[0013] Furthermore, the connecting assembly includes an L-shaped rod fixedly installed at the bottom of the sealing ring, a movable groove matching the L-shaped rod is opened on the side wall of the installation cavity, and a second spring is installed between the movable groove and the L-shaped rod.

[0014] Furthermore, the pressure regulating assembly includes a one-way exhaust steel pipe fixedly connected to the bottom of the sealing frame, the other end of the one-way exhaust steel pipe is fixedly connected to a pressure storage pipe, and a hose is connected between the top of the pressure storage pipe and the installation cavity, an air guide column is fixedly installed in the installation cavity and is sealed and slidably connected to the sealing ring, and the bottom of the air guide column is fixedly connected to the hose, an opening and closing mechanism is installed on the pressure storage pipe, and the opening and closing mechanism cooperates with the control assembly.

[0015] Furthermore, the opening and closing mechanism includes a rotating shaft that is sealed and rotatably connected to the pressure storage tube, and a baffle matching the inner diameter of the pressure storage tube is fixedly installed on one end of the rotating shaft located inside the pressure storage tube, a ratchet is fixedly installed on one end of the rotating shaft located outside the pressure storage tube, and a torsion spring is installed between the ratchet and the pressure storage tube.

[0016] Furthermore, the control assembly includes a support rod fixedly mounted on the side wall of the fixed plate, and an oblique tooth matching the ratchet is mounted on the support rod via a sliding mechanism.

[0017] Furthermore, the sliding mechanism includes a sliding groove opened on the side wall of the support rod, and a sliding column is slidably installed in the sliding groove, the sliding column is fixedly connected to the oblique teeth, and a spring three is installed between the sliding column and the sliding groove.

[0018] Furthermore, a cavity is provided in the machine base to match the mounting plate and the sealing frame, and a through groove is provided on the upper side wall of the cavity to match the support rod and the oblique teeth.

[0019] Furthermore, a plurality of through holes are provided on the upper side wall of the cavity and the positioning plate, and each through hole corresponds to a corresponding upper mold position.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] 1: Through the design of the demoulding part, the lunch box can be pushed away from the bottom mold by moving the sealing ring upward after the pressing is completed, which is convenient for separating the lunch box from the bottom mold, so that the subsequent demoulding process can be carried out smoothly, which can effectively reduce the demoulding difficulty and increase the demoulding speed.

[0022] 2: Through the design of the connecting component, the sealed connection between the sealing ring and the annular groove can be guaranteed during the pressing process, thereby ensuring the integrity and sealing of the upper surface of the bottom film during pressing, and avoiding the problem of poor quality of the lunch box after pressing due to gaps on the upper surface of the bottom mold.

[0023] 3: Through the cooperation of the pressure regulating assembly and the compression assembly, the pressure applied by the upper mold to the bottom mold during the pressing process can be used to provide power for the subsequent operation of the demolding part. There is no need to set up an additional pneumatic mechanism, which can effectively reduce the use and production costs of the device.

[0024] 4: Through the design of the control component and the opening and closing mechanism, the sealing ring can be guaranteed not to be under pressure during the pressing process, avoiding the problem of poor quality of the lunch box due to the movement of the sealing ring during the pressing process, and the sealing ring can be guaranteed to push the lunch box in time after the pressing is completed, with high automation and sensitivity.

[0025] In summary, the present invention can convert part of the pressure during the pressing process, and use the pressure to automatically push the lunch box away from the bottom film after the pressing is completed, so as to facilitate the separation between the lunch box and the bottom mold, ensure the subsequent demolding process to be carried out smoothly, effectively reduce the demolding difficulty, and improve the demolding speed. In addition, the bottom film can ensure the integrity and sealing during the pressing process, avoiding the problem of poor pressing quality of the lunch box due to gaps on the upper surface of the bottom mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of a pressing device of an aluminum foil lunch box production system proposed by the present invention;

[0027] Figure 2 for Figure 1 Schematic diagram of the structure after being deflected upwards by a certain angle;

[0028] Figure 3 for Figure 2Schematic diagram of the structure after removing the machine base, guide rods and machine table;

[0029] Figure 4 for Figure 3 Schematic diagram of the structural breakdown of the medium pressure plate, fixed plate and positioning plate;

[0030] Figure 5 for Figure 3 An exploded and enlarged schematic diagram of the structure of the middle mounting plate and the sealing frame;

[0031] Figure 6 for Figure 3 A top view of the middle mounting plate and the sealing frame;

[0032] Figure 7 for Figure 6 The structural diagram of the middle A surface;

[0033] Figure 8 for Figure 7 Schematic diagram of the three-dimensional structure;

[0034] Fig. 9 for Figure 5 Schematic diagram of the structure after being deflected downward by a certain angle;

[0035] Fig.10 for Fig.10 Schematic diagram of the structure after deflection at a certain angle;

[0036] Fig.11 for Figure 4 A magnified schematic diagram of the structure of the middle L-shaped rod and its connecting components.

[0037] In the figure: 1. machine base; 2. guide column; 3. machine table; 4. hydraulic press; 5. pressure plate; 6. fixed plate; 7. upper mold; 8. mounting plate; 9. bottom mold; 10. positioning plate; 11. fixed column; 12. connecting sleeve; 13. spring one; 14. sealing frame; 15. sealing plate; 16. connecting plate; 17. circular column; 18. compression spring; 19. mounting cavity; 20. annular groove; 21. sealing ring; 22. air guide column; 23. L-shaped rod; 24. moving groove; 25. spring two; 26. one-way exhaust steel pipe; 27. pressure storage pipe; 28. hose; 29. ​​baffle; 30. ratchet; 31. torsion spring; 32. support rod; 33. sliding groove; 34. sliding column; 35. spring three; 36. oblique teeth; 37. through groove. DETAILED DESCRIPTION

[0038] Reference Figure 1-Figure 11, a pressing device of an aluminum foil lunch box production system, comprising a machine platform 3 fixedly mounted on a machine base 1 through a plurality of guide columns 2, and also comprising a hydraulic press 4 fixedly mounted on the machine platform 3, and the output end of the hydraulic press 4 is fixedly connected to a pressing plate 5 slidably connected to the plurality of guide columns 2, and the hydraulic press 4 drives the fixed plate 6 to move downward through the pressing plate 5 when working, and the hydraulic press 4 is an existing component, and its working principle and specific structure are not described here, and at the same time, the machine base 1 is equipped with a device for conveying aluminum foil, which is also a prior art, so the working principle and specific structure are not described here;

[0039] The die part includes a fixed plate 6 fixedly mounted on the bottom of the pressing plate 5, and a plurality of upper dies 7 are fixedly mounted on the bottom of the fixed plate 6; the lower die part includes a mounting plate 8 mounted in the base 1 through a compression assembly, and a plurality of bottom dies 9 matched with the corresponding upper dies 7 are fixedly mounted on the top of the mounting plate 8. The aluminum foil lunch box can be pressed by the cooperation between the die part and the lower die part;

[0040] The demoulding part includes a plurality of annular grooves 20 opened on the upper surface of the corresponding bottom mold 9, and a sealing ring 21 is sealed and slidably installed in each annular groove 20. The demoulding part is used to separate the aluminum foil lunch box from the bottom mold 9, so that the demoulding process of the aluminum foil lunch box is easier to carry out, and the problem of production not being able to proceed smoothly due to demoulding failure is avoided. Specifically, when the sealing ring 21 moves up in the annular groove 20, the formed lunch box can be pushed away from the bottom mold 9. Due to the sealing design between the sealing ring 21 and the annular groove 20, the integrity of the upper surface of the bottom mold 9 can be maintained during the pressing process, thereby ensuring the quality of the pressed lunch box.

[0041] A positioning plate 10 is installed at the bottom of the fixed plate 6 through multiple telescopic components. The telescopic components include a fixed column 11 fixedly installed on the upper end of the positioning plate 10. A connecting sleeve 12 matched with the fixed column 11 is fixedly installed at the bottom of the fixed plate 6, and a spring 13 is installed between the fixed column 11 and the connecting sleeve 12. When the fixed plate 6 approaches the mounting plate 8 under the action of the hydraulic press 4, the positioning plate 10 first contacts the machine base 1. At this time, the aluminum foil located on the machine base 1 is pressed and positioned to ensure that the position of the aluminum foil is fixed during the subsequent pressing process, so as to avoid the problem of poor pressing effect caused by the movement of the aluminum foil, and as the pressing During the operation, the fixed column 11 can overcome the elastic force of the spring 13 and move into the connecting sleeve 12 to avoid mutual obstruction of the positioning and pressing of the aluminum foil. The cross-sections of the inner walls of the fixed column 11 and the connecting sleeve 12 are both T-shaped, which is used to ensure a stable connection between the positioning plate 10 and the fixed plate 6. This design is a common structural shape design, so the specific shapes of the fixed column 11 and the connecting sleeve 12 are not shown in the figure. At the same time, the height of the inner wall of the connecting sleeve 12 is greater than the height of the upper mold 7. The purpose of the size design here is to ensure that the moving distance of the positioning plate 10 relative to the fixed plate 6 can meet the smooth pressing.

[0042] The compression assembly includes a sealing frame 14 fixedly installed in the machine base 1, and a sealing plate 15 is sealingly and slidably installed in the sealing frame 14. The top of the sealing plate 15 is fixedly connected to the mounting plate 8 through a connecting plate 16. A plurality of circular columns 17 sealingly and slidably connected to the sealing plate 15 are fixedly installed in the machine base 1. A compression spring 18 is sleeved on each circular column 17. When the upper mold 7 contacts the bottom mold 9, the mounting plate 8 can be moved downward by pressure. At this time, the pressure can be buffered, so that the molding effect of the aluminum foil lunch box is better, and it is also convenient to separate the molded lunch box from the aluminum foil. When the external force on the bottom mold 9 is eliminated, the elastic force of the compression spring 18 will cause the sealing plate 15 to drive the connecting plate 16 and the mounting plate 8 to move up and reset.

[0043] A cavity is provided in the machine base 1 to cooperate with the mounting plate 8 and the sealing frame 14. A plurality of through holes are provided on the upper side wall of the cavity and the positioning plate 10 (the through holes are not marked in the figure), and each through hole corresponds to the position of the corresponding upper mold 7. The design of the plurality of through holes is used to ensure that the upper mold 7 can stably contact with the bottom mold 9 during the pressing process to complete the pressing process.

[0044] A mounting cavity 19 communicating with the corresponding annular groove 20 is provided in each bottom mold 9, and a plurality of connecting components are installed between each mounting cavity 19 and the corresponding sealing ring 21. The connecting components include an L-shaped rod 23 fixedly installed at the bottom of the sealing ring 21, and a movable groove 24 cooperating with the L-shaped rod 23 is provided on the side wall of the mounting cavity 19, and a spring 25 is installed between the movable groove 24 and the L-shaped rod 23. Through the design of the spring 25, when the sealing ring 21 is not subjected to external force, the sealing state between it and the annular groove 20 can be guaranteed, thereby ensuring that the pressing process is completed smoothly.

[0045] A pressure regulating assembly is installed between the compression assembly and each installation cavity 19. The pressure regulating assembly includes a one-way exhaust steel pipe 26 fixedly connected to the bottom of the sealing frame 14. The other end of the one-way exhaust steel pipe 26 is fixedly connected to a pressure storage pipe 27. The one-way exhaust steel pipe 26 is used to discharge the gas at the bottom of the sealing frame 14, and at the same time supports and fixes the pressure storage pipe 27. A hose 28 is connected between the top of the pressure storage pipe 27 and the installation cavity 19. The hose 28 is used to send the gas in the pressure storage pipe 27 into the installation cavity 19, and can move simultaneously with the up and down movement of the installation plate 8. An air guide column 22 is fixedly installed in the installation cavity 19 and is sealed and slidably connected to the sealing ring 21, and the bottom of the air guide column 22 is fixedly connected to the hose 28. The air guide column 22 is a column with a hollow cavity inside, and an exhaust hole that communicates with the installation cavity 19 is provided on the side wall. When the gas enters the hollow cavity in the air guide column 22 through the hose 28, it can enter the installation cavity 19 through the exhaust hole to pressurize the installation cavity 19.

[0046] When the mounting plate 8 moves downward, the sealing plate 15 can be driven by the connecting plate 16 to overcome the elastic force of the compression spring 18 and move downward, thereby compressing the air at the bottom of the sealing frame 14. At this time, the gas enters the pressure storage tube 27 through the one-way exhaust steel pipe 26. The gas in the pressure storage tube 27 is compressed and then enters the mounting cavity 19 through the hose 28. When the air pressure in the mounting cavity 19 increases, the sealing ring 21 overcomes the elastic force of the spring 25 and moves upward under the action of pressure to push the formed lunch box off the bottom mold 9, thereby ensuring that the subsequent demolding process proceeds smoothly.

[0047] A one-way air inlet hole is provided on the bottom side wall of the sealing frame 14 (not shown in the figure) and is used to allow air to enter the sealing frame 14 to achieve internal pressure balance when the sealing plate 15 is reset.

[0048] A plurality of control components are mounted on the fixed plate 6, and an opening and closing mechanism is mounted on the pressure storage tube 27, and the opening and closing mechanism cooperates with the control component. The opening and closing mechanism comprises a rotating shaft which is sealed and rotatably connected to the pressure storage tube 27, and a baffle 29 which matches the inner diameter of the pressure storage tube 27 is fixedly mounted on one end of the rotating shaft which is located inside the pressure storage tube 27, and a ratchet 30 is fixedly mounted on one end of the rotating shaft which is located outside the pressure storage tube 27, and a torsion spring 31 is mounted between the ratchet 30 and the pressure storage tube 27. When the ratchet 30 is not subjected to external force, the elastic force of the torsion spring 31 enables the rotating shaft to maintain a fixed angle on the pressure storage tube 27, and at this time, the baffle 29 is in a horizontal state, so the one-way exhaust steel pipe 26 and the hose 28 are in a closed state, so the sealing ring 21 maintains its position unchanged in the annular groove 20 at this time.

[0049] The control component includes a support rod 32 fixedly mounted on the side wall of the fixed plate 6, and the support rod 32 is equipped with an oblique tooth 36 that matches the ratchet 30 through a sliding mechanism. The sliding mechanism includes a sliding groove 33 opened on the side wall of the support rod 32, and a sliding column 34 is slidably installed in the sliding groove 33. The sliding column 34 is fixedly connected to the oblique tooth 36, and a spring three 35 is installed between the sliding column 34 and the sliding groove 33. When the fixed plate 6 moves downward, the oblique tooth 36 and the ratchet 30 are in a straight tooth state. At this time, due to the elastic force of the torsion spring 31, the oblique tooth 36 overcomes the elastic force of the spring three 35 under the top action of the ratchet 30 and approaches the support rod 32. Therefore, the ratchet 30 remains stationary, which can ensure the fixing of the position of the sealing ring 21 and ensure the smooth progress of the pressing operation. When the upper mold 7 and the bottom mold 9 are completed, the oblique tooth 36 is located below the ratchet 30 (it can be adjusted by adjusting the length of the support rod 32 and the position of the oblique tooth 36 on the support rod 32);

[0050] The upper side wall of the cavity is provided with a through groove 37 that cooperates with the support rod 32 and the oblique teeth 36. When the fixing plate 6 is reset after the pressing is completed, the oblique teeth 36 and the ratchet 30 are in a reverse tooth state. At this time, the oblique teeth 36 cannot move in the direction close to the support rod 32, so it can drive the ratchet 30 to rotate. At this time, the baffle 29 rotates in the pressure storage tube 27 to connect the one-way exhaust steel pipe 26 with the hose 28, then the gas will enter the installation cavity 19, so that the sealing ring 21 moves up from the annular groove 20 to push the lunch box, and some gas will also be ejected outward from the annular groove 20, effectively realizing the separation between the lunch box and the bottom mold 9, ensuring the smooth subsequent demolding process.

[0051] In the present invention, the working principle of a pressing device of an aluminum foil lunch box production system includes the following steps:

[0052] Pressing process: The aluminum foil is conveyed from above the machine base 1 by the existing supporting conveying equipment. During the conveying process, the fixing plate 6 is moved up and down reciprocatingly relative to the mounting plate 8 by controlling the hydraulic press 4. When the fixing plate 6 approaches the mounting plate 8, the positioning plate 10 first contacts the aluminum foil to limit its position on the machine base 1, and then the upper mold 7 and the bottom mold 9 are fitted together to complete the pressing;

[0053] Pressurization treatment: During the pressing process, when the upper mold 7 and the bottom mold 9 are fitted together, due to the pressure, the mounting plate 8 drives the sealing plate 15 to move downward in the sealing frame 14, compressing the air at the bottom of the sealing frame 14, and then the high-pressure gas enters the pressure storage pipe 27 through the one-way exhaust steel pipe 26. Since the baffle 29 remains horizontal at this time, the air pressure at the lower end of the pressure storage pipe 27 at the baffle 29 increases;

[0054] Depressurization and demoulding process: When the pressing fixing plate 6 is moved up and reset, the oblique teeth 36 drive the ratchet 30 to rotate so that the baffle 29 rotates in the pressure storage tube 27. At this time, the high-pressure gas in the pressure storage tube 27 can enter the air guide column 22 through the hose 28, and enter the installation cavity 19 through the exhaust hole thereon. After the gas enters the installation cavity 19, the pressure causes the sealing ring 21 to move up from the annular groove 20 to push the lunch box, and some gas will also be ejected outward from the annular groove 20, effectively realizing the separation between the lunch box and the bottom mold 9, ensuring the smooth progress of the subsequent demoulding process.

[0055] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A pressing device for an aluminum foil lunch box production system, comprising a machine table (3) fixedly mounted on a machine base (1) via a plurality of guide posts (2), characterized in that: Also includes: A hydraulic press (4) fixedly mounted on the machine platform (3), wherein an output end of the hydraulic press (4) is fixedly connected to a pressing plate (5) slidably connected to a plurality of guide pillars (2); A die section, the die section comprising a fixed plate (6) fixedly mounted on the bottom of the pressing plate (5), a plurality of upper dies (7) fixedly mounted on the bottom of the fixed plate (6), and a positioning plate (10) mounted on the bottom of the fixed plate (6) via a plurality of telescopic components; A lower mold part, the lower mold part comprising a mounting plate (8) mounted in the machine base (1) via a compression assembly, and a plurality of bottom molds (9) matched with corresponding upper molds (7) are fixedly mounted on the top of the mounting plate (8); A demoulding portion, the demoulding portion comprising a plurality of annular grooves (20) formed on the upper surface of a corresponding bottom mold (9), and a sealing ring (21) is sealingly and slidably installed in each annular groove (20), each bottom mold (9) is provided with a mounting cavity (19) communicating with the corresponding annular groove (20), a plurality of connecting components are installed between each mounting cavity (19) and the corresponding sealing ring (21), a pressure regulating component is installed between the compression component and each mounting cavity (19), and a plurality of control components cooperating with the corresponding pressure regulating components are installed on the fixed plate (6); The telescopic assembly comprises a fixing column (11) fixedly mounted on the upper end of the positioning plate (10); a connecting sleeve (12) matching with the fixing column (11) is fixedly mounted on the bottom of the fixing plate (6); and a spring (13) is installed between the fixing column (11) and the connecting sleeve (12); The compression assembly comprises a sealing frame (14) fixedly mounted in the machine base (1), and a sealing plate (15) is sealingly and slidably mounted in the sealing frame (14), the top of the sealing plate (15) is fixedly connected to the mounting plate (8) via a connecting plate (16), and a plurality of circular columns (17) sealingly and slidably connected to the sealing plate (15) are fixedly mounted in the machine base (1), and each of the circular columns (17) is sleeved with a compression spring (18); The connecting assembly comprises an L-shaped rod (23) fixedly mounted on the bottom of the sealing ring (21); a movable groove (24) matching with the L-shaped rod (23) is formed on the side wall of the mounting cavity (19); and a second spring (25) is installed between the movable groove (24) and the L-shaped rod (23); The pressure regulating assembly comprises a one-way exhaust steel pipe (26) fixedly connected to the bottom of the sealing frame (14); the other end of the one-way exhaust steel pipe (26) is fixedly connected to a pressure storage pipe (27); a hose (28) is connected between the top of the pressure storage pipe (27) and the installation cavity (19); an air guide column (22) sealingly and slidably connected to the sealing ring (21) is fixedly installed in the installation cavity (19); the bottom of the air guide column (22) is fixedly connected to the hose (28); an opening and closing mechanism is installed on the pressure storage pipe (27), and the opening and closing mechanism cooperates with the control assembly; The opening and closing mechanism comprises a rotating shaft which is sealingly rotatably connected to the pressure storage tube (27), and a baffle (29) which matches the inner diameter of the pressure storage tube (27) is fixedly mounted on one end of the rotating shaft located inside the pressure storage tube (27), and a ratchet (30) is fixedly mounted on one end of the rotating shaft located outside the pressure storage tube (27), and a torsion spring (31) is installed between the ratchet (30) and the pressure storage tube (27).

2. The pressing device of the aluminum foil lunch box production system according to claim 1 is characterized in that: The control assembly comprises a support rod (32) fixedly mounted on a side wall of a fixed plate (6), and an oblique tooth (36) matching with the ratchet wheel (30) is mounted on the support rod (32) via a sliding mechanism.

3. The pressing device of the aluminum foil lunch box production system according to claim 2 is characterized in that: The sliding mechanism comprises a sliding groove (33) formed on a side wall of the support rod (32), and a sliding column (34) is slidably mounted in the sliding groove (33). The sliding column (34) is fixedly connected to the oblique teeth (36), and a spring (35) is mounted between the sliding column (34) and the sliding groove (33).

4. The pressing device of the aluminum foil lunch box production system according to claim 3 is characterized in that: A cavity matching the mounting plate (8) and the sealing frame (14) is provided in the machine base (1), and a through groove (37) matching the support rod (32) and the oblique teeth (36) is provided on the upper side wall of the cavity.

5. The pressing device of the aluminum foil lunch box production system according to claim 4 is characterized in that: A plurality of through holes are provided on the upper side wall of the cavity and the positioning plate (10), and each through hole corresponds to a corresponding position of the upper mold (7).

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