An online full-automatic aluminum foil sealing machine

Abstract

This application relates to an online fully automatic aluminum foil sealing machine, belonging to the technical field of intelligent equipment. It includes a conveyor frame, a support arm vertically positioned on one side of the conveyor frame, a conveyor belt mounted on the conveyor frame, a crossbar slidably mounted on the support arm, a drive component fixedly mounted thereon, and a sensor head fixedly mounted on the crossbar. Two connecting rods are detachably mounted on the sensor head, and a middle rod is rotatably mounted on the two connecting rods. A receiving rod is vertically fixed on the lower end face of the middle rod, and a flexible storage bag is provided between the two receiving rods. An elastic clamping rod is provided above the receiving rod, one end of which is rotatably connected to the upper side of the receiving rod near the middle rod, and a positioning hook is fixed on the other end of the elastic clamping rod. A positioning slot is provided on the receiving rod. This application enables real-time temporary collection of aluminum foil waste and other debris generated during the sealing operation, preventing waste from scattering around the equipment and the conveying mechanism, maintaining a clean production site, and reducing interference from waste on equipment operation.

Description

Technical Field

[0001] This application relates to the technical field of intelligent equipment, and in particular to an online fully automatic aluminum foil sealing machine. Background Technology

[0002] Currently, fully automatic electromagnetic induction aluminum foil sealing machines are widely used in the packaging and processing of bottled products in the food, daily chemical, pharmaceutical, and chemical industries, and are an indispensable core sealing equipment in bottling production lines. With the increasing demand for large-scale and automated production of bottled products, the market has placed higher requirements on the automation level, sealing stability, and production continuity of aluminum foil sealing machines. Electromagnetic induction sealing, with its advantages of being non-contact, fast sealing speed, good sealing effect, and wide applicability to bottle types, is gradually replacing traditional heat-sealing methods, becoming the mainstream sealing process in the industry, and driving the continuous iterative upgrade of supporting sealing equipment towards integration and high efficiency.

[0003] In existing related technologies, conventional aluminum foil sealing machines mainly consist of core structures such as a conveyor frame, support arm, conveyor belt, linear guide rail, crossbar, and induction head. The support arm is fixed vertically to one side of the conveyor frame, on which a horizontal conveyor belt is installed to transport bottles to be sealed. An aluminum foil gasket is pre-placed at the bottle opening. A linear guide rail is mounted on the support arm, and a crossbar is slidably installed thereon. The end of the crossbar is fixed to an induction head suspended above the conveyor belt. When the bottle carrying the aluminum foil gasket is transported by the conveyor belt to directly below the induction head, the linear guide rail drives the crossbar to move the induction head down to its designated position. The induction coil inside the induction head generates an alternating magnetic field, causing eddy currents in the aluminum foil gasket at the bottle opening, which then heats up and melts the inner layer of hot melt adhesive, achieving a seal with the bottle opening.

[0004] In the application of the aforementioned sealing machines, to ensure the sealing accuracy of the bottle neck, the aluminum foil pre-installed on the bottle neck is usually too large, requiring trimming of the excess edges during production. In pursuit of efficiency, operators often scatter and discard the aluminum foil waste directly on the ground around the equipment. This not only creates a messy production environment but also easily gets caught in the conveyor mechanism, affecting the normal operation of the equipment. Furthermore, it requires time-consuming manual cleaning, adding extra labor hours and operating costs, significantly slowing down the overall processing speed and production efficiency of the entire bottling production line, indicating room for improvement. Summary of the Invention

[0005] The purpose of this application is to provide an online fully automatic aluminum foil sealing machine to solve the problems in the above-mentioned related technologies, such as the random scattering of aluminum foil cutting waste, the dirty and messy on-site environment, the easy interference with equipment operation, the time-consuming and labor-intensive manual cleaning, and the reduction of the overall efficiency of the production line.

[0006] The online fully automatic aluminum foil sealing machine provided in this application adopts the following technical solution: An online fully automatic aluminum foil sealing machine includes a conveyor frame and a support arm vertically positioned on one side of the conveyor frame. A conveyor belt for transferring bottles is horizontally mounted on the conveyor frame. A crossbar is slidably mounted on the support arm, and a driving component for moving the crossbar up and down is fixedly mounted thereon. A sensor head located above the conveyor frame is fixedly mounted on the crossbar. Two coaxial connecting rods are detachably mounted horizontally on the vertical side of the sensor head away from the crossbar. A vertically downward-facing intermediate rod is rotatably mounted on the end faces of the two connecting rods that are close to each other. A receiving rod is vertically fixed on the lower end face of the rod along the direction away from the sensor head, and a flexible storage bag with an upward opening is provided between the two receiving rods; an elastic clamping rod with elastic shortening performance is provided above the receiving rod, one end of the elastic clamping rod is rotatably connected to the upper side of the receiving rod near the middle rod, and a positioning hook is fixed on the other end of the elastic clamping rod. A positioning slot is opened on the end face of the receiving rod away from the middle rod. When the sides of the receiving rod and the middle rod that are close to each other are engaged with the positioning hook into the positioning slot, the upper edge of the opening of the flexible storage bag can be clamped.

[0007] By adopting the above technical solution, a support structure for the installation of flexible storage bags can be constructed using connecting rods, intermediate rods, and receiving rods. The elastic force of the elastic clamping rods, combined with the engagement of positioning hooks and positioning slots, enables the rapid fixing and disassembly of the flexible storage bags. This structure can temporarily collect aluminum foil waste and other debris generated during the sealing process, preventing waste from scattering around the equipment and conveying mechanisms, maintaining a clean production site, reducing interference from waste on equipment operation, eliminating the need for time-consuming cleaning by dedicated personnel, reducing labor costs, and ensuring the production line's processing rhythm and overall production efficiency.

[0008] Optionally, a guide slope is provided at the opening edge of the positioning slot.

[0009] By adopting the above technical solution, a guide slope is set on the edge of the positioning slot opening, which can play a guiding role in the process of the positioning hook being inserted into the positioning slot, guiding the positioning hook to slide into the slot quickly and smoothly, avoiding the hook from getting stuck on the edge of the slot, simplifying the installation and fixing operation of the flexible storage bag, saving operation time, reducing the wear of the hook and the slot, extending the service life of the components, ensuring the clamping stability of the elastic clamping rod on the flexible storage bag, and ensuring the reliability of the sundries storage process.

[0010] Optionally, the ends of the connecting rods that are far apart from each other are rotatably connected to the lower edge of the vertical side of the sensing head away from the crossbar. The rotating surface of the connecting rod is parallel to the vertical side of the sensing head away from the crossbar. A limiting member is provided on the outside of the sensing head. The two connecting rods can rotate towards each other to a horizontal and coaxial unfolded state and be fixed by the limiting member. At this time, the two intermediate rods rotate to a vertically downward supporting state. The two connecting rods can rotate away from each other to a vertically upward retracted state. At this time, the two intermediate rods can rotate to a parallel state that abuts against the top surface of the sensing head and be fixed by the limiting member.

[0011] By adopting the above technical solution, the connecting rod can be rotated, adjusted, and fixed in a limited position. When the machine is in operation, the connecting rod can be unfolded to a horizontal state, so that the flexible storage bag is in a suitable storage position, making it convenient for operators to put away miscellaneous items. When the machine is stopped and stored, the connecting rod can be folded to a vertical state, so that the middle rod can be brought into contact with the top surface of the sensor head, which greatly reduces the overall space occupied by the equipment, making it easier to store and move the equipment. At the same time, it avoids the support components from being damaged by collisions when not in operation, thus improving the practicality and convenience of the equipment.

[0012] Optionally, the limiting component includes an elastic handle rotatably connected to the top surface of the sensor head away from the edge of the crossbar. The elastic handle has elastic elongation properties, and two limiting blocks are fixed on the side of the elastic handle away from the sensor head. A first slot is opened on the top surface of the two connecting rods when they are in the unfolded state, and a second slot is opened on the outer periphery of the elastic clamping rod away from the receiving rod. When the two connecting rods are in the unfolded state, the elastic handle can rotate to a vertically downward state that abuts against the vertical side of the sensor head away from the crossbar, and the limiting blocks are inserted into the first slot at this time. When the two connecting rods are in the retracted state and the two intermediate rods are in a side-by-side state, the elastic handle can rotate to a parallel state that abuts against the top surface of the sensor head, and the limiting blocks are inserted into the second slot at this time.

[0013] By adopting the above technical solution, the limiting component uses a cooperative structure of an elastic handle and a limiting block. Depending on the unfolded or retracted state of the connecting rod, rotating the elastic handle causes the limiting block to engage with either the first or second slot, enabling rapid locking and unlocking of the connecting rod in both states. The elasticity of the handle ensures a tight fit between the limiting block and the slot, preventing loosening or displacement of the connecting rod during equipment operation or handling. The structure is simple, operation is convenient, and it effectively ensures the stability of the support components' working state, improving the reliability of equipment operation.

[0014] Optionally, a guide slope is fixed on the outer edge of the side of the limiting block away from the elastic handle.

[0015] By adopting the above technical solution, a guide slope is provided on the outer edge of the limiting plug, which can play a guiding role when the limiting plug is inserted into the first or second slot, reducing the difficulty of aligning the plug with the slot, and enabling the limiting plug to be inserted into the slot quickly and smoothly.

[0016] Optionally, an elastic sleeve is provided on the outer periphery of the elastic handle.

[0017] By adopting the above technical solution, the elastic handle is covered with an elastic sleeve, which can effectively buffer the force when the operator turns the handle, improve the operating feel, avoid the wear or discomfort caused by direct contact between the hand and the hard handle, and improve the comfort of operation.

[0018] Optionally, an elastic protective plate with elastic elongation properties is rotatably connected to the vertical side of the intermediate rod facing the receiving rod. A positioning block and a positioning slot are fixed on the side of the elastic protective plate away from the intermediate rod. When the two connecting rods are in the unfolded state, the two elastic protective plates can rotate to abutting state, and the positioning block on one of the two elastic protective plates is inserted into the positioning slot on the other. When the two connecting rods are in the retracted state and the limiting block is inserted into the second slot, the two elastic protective plates rotate to a vertically upward protective state, and at this time, the two vertical sides of the elastic protective plates abut against the sides of the connecting rod and the elastic handle that are close to each other.

[0019] By adopting the above technical solution, during operation, the two protective plates lock together, shielding the front side below the sensor head and preventing debris in the flexible storage bag from falling onto the conveyor belt due to equipment vibration, thus preventing interference with equipment operation. When the machine is stopped and the bag is being stored, the protective plates stand vertically upwards and are limited by the connecting rod and elastic handle, providing initial protection to the top of the sensor head, preventing dust and debris from falling onto its surface and protecting the sensor head's working accuracy. The elasticity and rotational performance of the flexible protective plates adapt to both states of the connecting rod, resulting in a flexible structure and reliable protective effect.

[0020] Optionally, the positioning insert has a first inclined surface at the outer edge of its side away from the elastic protective plate.

[0021] By adopting the above technical solution, a first inclined surface is provided on the outer edge of the positioning block, which can guide the positioning block to quickly and smoothly engage in the positioning slot when the two elastic protective plates are mated. This simplifies the mating and locking operation of the protective plates and saves operation time. At the same time, the first inclined surface can reduce the friction between the positioning block and the edge of the slot, avoid component jamming or damage, ensure that the two protective plates are tightly mated and firmly locked, guarantee the protective stability of the protective plates during operation, and prevent debris from falling from the mating gap.

[0022] Optionally, a flexible protective curtain is provided above the sensor head, and the top surfaces of the two elastic protective plates in the protective state are detachably connected to the two opposite edges of the flexible protective curtain.

[0023] By adopting the above technical solution, a flexible protective curtain is installed above the sensor head. When the machine is stopped and stored, it can be detachably connected to the elastic protective plate to achieve full coverage protection of the top surface of the sensor head. This effectively prevents dust, debris, water droplets, etc. from entering the inside of the sensor head or adhering to the surface, avoiding malfunctions caused by foreign object contamination, protecting the core components of the sensor head, extending the service life of the equipment, and ensuring the sensing accuracy and sealing quality of the sensor head. At the same time, the flexible material facilitates storage and cleaning, improving the ease of equipment maintenance.

[0024] Optionally, the flexible protective curtain is provided with fixed hooks at its four corners, and the elastic protective plate is provided with a fixed hanging ring at the outer edge of its top surface when it is in the protective state, so that the fixed hooks can be inserted.

[0025] By adopting the above technical solution, the flexible protective curtain is quickly installed and removed by engaging the fixed hooks at the four corners with the fixed rings on the elastic protective plate. This simple and convenient operation facilitates cleaning, replacement, and storage of the curtain. The secure connection between the hooks and rings ensures the curtain will not fall off during equipment storage, fully covering the top surface of the sensor head and guaranteeing protective effectiveness. It also avoids problems such as the curtain being too tight or too loose, which could cause pressure on the sensor head or inadequate protection, thus improving the reliability and practicality of the protection.

[0026] In summary, this application includes the following beneficial technical effects: In this application, a support structure for installing flexible storage bags can be constructed using connecting rods, intermediate rods, and receiving rods. The elastic force of the elastic clamping rods, combined with the engagement of positioning hooks and positioning slots, enables rapid fixing and disassembly of the flexible storage bags. This structure can temporarily collect aluminum foil waste and other debris generated during the sealing process, preventing waste from scattering around the equipment and conveying mechanisms, maintaining a clean production site, reducing interference from waste on equipment operation, eliminating the need for time-consuming cleaning by dedicated personnel, reducing labor costs, and ensuring the production line's processing rhythm and overall production efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application; Figure 2 This is a partial cross-sectional view of the flexible storage bag installation and assembly according to an embodiment of this application; Figure 3 yes Figure 2 An enlarged schematic diagram of part A in the middle; Figure 4 This is a partial structural diagram illustrating the installation and assembly of the support components in an embodiment of this application; Figure 5 This is a schematic diagram illustrating the installation and fit of the limiting component in an embodiment of this application; Figure 6 This is a partial cross-sectional view of the structure of the flexible handle installation and fit in an embodiment of this application; Figure 7 This is a partial cross-sectional view of the installation and fit of the elastic sheath in an embodiment of this application; Figure 8 yes Figure 7 Enlarged schematic diagram of part B; Figure 9 This is a partial cross-sectional view of the installation and assembly of the elastic protective plate according to an embodiment of this application; Figure 10 This is a partial cross-sectional view of an embodiment of the present application illustrating the insertion and mating of the positioning block and the positioning slot; Figure 11 yes Figure 10 An enlarged schematic diagram of section C; Figure 12 This is a partial structural diagram illustrating the installation and coordination of the flexible protective curtain in an embodiment of this application; Figure 13 This is a partial structural diagram illustrating the installation and cooperation of the fixed hanging ring and the fixed hook in an embodiment of this application.

[0028] In the diagram, 1. Conveyor frame; 11. Conveyor belt; 2. Support arm; 21. Crossbar; 22. Drive component; 23. Sensor head; 3. Support assembly; 31. Connecting rod; 311. First slot; 32. Intermediate rod; 33. Receiving rod; 331. Positioning slot; 332. Guide slope; 34. Elastic clamping rod; 341. Second slot; 35. Positioning hook; 4. Flexible storage bag; 5. Flexible protective curtain; 51. Fixed hook; 6. Limiting component; 61. Elastic handle; 611. Elastic sleeve; 612. Limiting insert; 6121. Guide slope; 7. Elastic protective plate; 71. Positioning insert; 711. First slope; 72. Positioning slot; 73. Fixed hanging ring. Detailed Implementation

[0029] The present application will be further described in detail below with reference to all the accompanying drawings.

[0030] Example: Reference Figure 1 An online fully automatic aluminum foil sealing machine includes a conveyor frame 1 and a support arm 2 arranged vertically on one side of the conveyor frame 1. A conveyor belt 11 for transferring bottles is installed horizontally on the conveyor frame 1 (driven by a motor). The bottom surface of the support arm 2 is installed on the ground. A crossbar 21 is slidably mounted on the support arm 2, and a driving component 22 is fixedly mounted on it to drive the crossbar 21 to slide up and down. The driving component 22 is a linear guide rail structure, which is a conventional displacement driving structure and will not be described in detail here. A sensing head 23 located above the conveyor frame 1 is fixedly mounted on the crossbar 21. When the bottle with the aluminum foil gasket is transported by the conveyor belt 11 to directly below the sensor head 23, the drive unit 22 drives the crossbar 21 and the sensor head 23 to move down synchronously. At the same time, the induction coil inside the sensor head 23 generates an alternating magnetic field, which causes the aluminum foil gasket at the bottle mouth to generate eddy currents and self-heat, melting the inner hot melt adhesive to achieve bonding and sealing with the bottle mouth.

[0031] Reference Figure 1 , Figure 2 and Figure 3The sensor head 23 is provided with a support assembly 3 on its exterior. The support assembly 3 includes two connecting rods 31 that are detachably installed on the vertical side of the sensor head 23 away from the crossbar 21 in the horizontal direction and are kept coaxial. A vertically downward intermediate rod 32 is rotatably installed on the end faces of the two connecting rods 31 that are close to each other. A receiving rod 33 is vertically fixed on the lower end face of the intermediate rod 32 in the direction away from the sensor head 23. A flexible storage bag 4 with an upward opening is provided between the two receiving rods 33. An elastic clamping rod 34 with elastic shortening performance is provided above the receiving rod 33. One end of the elastic clamping rod 34 is rotatably connected to the upper side of the receiving rod 33 near the middle rod 32. A positioning hook 35 is fixed on the other end of the elastic clamping rod 34. A positioning slot 331 is opened on the end face of the receiving rod 33 away from the middle rod 32, and a guide slope 332 is provided at the opening edge of the positioning slot 331. When the sealing machine is started, the outer edge of the top surface of the flexible storage bag 4 is placed on the top surface of the receiving rod 33, and then the positioning hook 35 is inserted into the positioning slot 331. At this time, the sides of the receiving rod 33 and the intermediate rod 32 that are close to each other can clamp the upper edge of the opening of the flexible storage bag 4. The staff can temporarily place the debris generated during the operation of the equipment into the flexible storage bag 4.

[0032] Reference Figure 4 and Figure 5 The ends of the connecting rods 31 that are far apart from each other are rotatably connected to the lower edge of the vertical side of the sensing head 23 that is far away from the crossbar 21. The rotating surface of the connecting rods 31 is parallel to the vertical side of the sensing head 23 that is far away from the crossbar 21. The sensing head 23 is provided with a limiting member 6 on its outside. When the sealing machine is started, the two connecting rods 31 are rotated to a horizontal and coaxial unfolded state and fixed by the limiting piece 6. The two intermediate rods 32 are then rotated to a vertically downward supporting state, which facilitates the subsequent installation of the flexible storage bag 4. When the sealing machine is stopped and stored, the two connecting rods 31 are rotated to a vertically upward storage state, and the two intermediate rods 32 can be rotated to a parallel state that abuts against the top surface of the sensor head 23 and fixed by the limiting member 6, thereby reducing the space occupied during storage.

[0033] Reference Figure 6 , Figure 7 and Figure 8The limiting component 6 includes an elastic handle 61 rotatably connected to the top surface of the sensor head 23 away from the edge of the crossbar 21. The elastic handle 61 is covered with an elastic sleeve 611 made of rubber. The elastic handle 61 has the property of elastic extension. Two limiting blocks 612 are fixed on the side of the elastic handle 61 away from the sensor head 23. The outer edge of the side of the limiting block 612 away from the elastic handle 61 is fixed with a guide slope 6121. When the two connecting rods 31 are in the unfolded state, a first slot 311 is opened on the top surface. The elastic clamping rod 34 is opened with a second slot 341 on the outer periphery away from the receiving rod 33. When the two connecting rods 31 are in the unfolded state (i.e., when the sealing machine is turned on), the elastic handle 61 can be rotated to a vertically downward state that abuts against the vertical side of the sensor head 23 away from the crossbar 21, and the limiting block 612 is inserted into the first slot 311 at this time; when the two connecting rods 31 are in the retracted state and the two intermediate rods 32 are in a side-by-side state (i.e., when the sealing machine is stopped and retracted), the elastic handle 61 can be rotated to a parallel state that abuts against the top surface of the sensor head 23, and the limiting block 612 is inserted into the second slot 341 at this time.

[0034] Reference Figure 9 , Figure 10 and Figure 11 An elastic protective plate 7 with elastic elongation properties is rotatably connected to the vertical side of the intermediate rod 32 facing the receiving rod 33. A positioning block 71 and a positioning slot 72 are fixed on the side of the elastic protective plate 7 away from the intermediate rod 32. A first inclined surface 711 is provided on the outer edge of the side of the positioning block 71 away from the elastic protective plate 7. When the two connecting rods 31 are in the extended state, the two elastic protective plates 7 can rotate to the abutting state. The positioning block 71 on one of the two elastic protective plates 7 is inserted into the positioning slot 72 on the other to protect the front side below the sensor head 23 and prevent the debris temporarily placed in the flexible storage bag 4 from falling back into the conveyor belt 11 from between the two intermediate rods 32 due to external vibration. Reference Figure 12 and Figure 13 When the two connecting rods 31 are in the retracted state and the limiting plug 612 is inserted into the second slot 341, the two elastic protective plates 7 turn to the vertically upward protective state. At this time, the two vertical sides of the elastic protective plates 7 are in contact with the sides of the connecting rods 31 and the elastic handle 61 that are close to each other, so that the elastic protective plates 7 themselves remain vertically upward. The two elastic protective plates 7 in this state provide initial protection for the top of the sensor head 23. A flexible protective curtain 5 is provided above the sensor head 23. Fixed hooks 51 are provided at the four corners of the flexible protective curtain 5. When the elastic protective plate 7 is in the protective state, a fixed hanging ring 73 is provided on the outer edge of the top surface for the fixed hooks 51 to be inserted, so as to realize the protection of the top surface of the sensor head 23 by the flexible protective curtain 5 when the machine is stopped.

[0035] The implementation principle of this application embodiment is as follows: When the device is powered on, rotate the two connecting rods 31 to a horizontal and coaxial unfolded state. Turn the elastic handle 61 to a vertical position so that the limiting block 612 is engaged in the first slot 311 of the connecting rod 31 for fixation. Rotate the two intermediate rods 32 to a vertical position so that the two elastic protective plates 7 are engaged in abutment. The positioning block 71 is engaged in the positioning slot 72 to protect the front side below the sensor head 23. Finally, place the outer edge of the flexible storage bag 4 on the top surface of the receiving rod 33 and then use the positioning hook 35 on the elastic clamping rod 34 to engage in the positioning slot 331 for clamping. This can be used to temporarily store equipment debris.

[0036] When the device is stopped and stored, the two connecting rods 31 are rotated to face upwards and the middle rod 32 is rotated to a parallel position that abuts against the top surface of the sensor head 23. The limiting insert 612 is inserted into the second slot 341 on the elastic clamping rod 34. The elastic protective plate 7 is rotated to face upwards, and the elastic handle 61 is rotated to a position parallel to the top surface of the sensor head 23. Finally, the flexible protective curtain 5 can be installed through the fixing hanging ring 73 to protect the top surface of the sensor head 23 and reduce the storage space.

[0037] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. An online fully automatic aluminum foil sealing machine, comprising a conveyor frame (1) and a support arm (2) arranged vertically on one side of the conveyor frame (1), wherein a conveyor belt (11) for transferring bottles is installed horizontally on the conveyor frame (1), a crossbar (21) is slidably installed on the support arm (2), and a driving component (22) for driving the crossbar (21) to slide up and down is fixedly provided, wherein a sensor head (23) located above the conveyor frame (1) is fixedly provided on the crossbar (21); Its features are, Two coaxial connecting rods (31) are detachably installed on the vertical side of the sensor head (23) away from the crossbar (21) in the horizontal direction. A vertically downward intermediate rod (32) is rotatably installed on the end face of the two connecting rods (31) that are close to each other. A receiving rod (33) is vertically fixed on the lower end face of the intermediate rod (32) in the direction away from the sensor head (23). A flexible storage bag (4) with an upward opening is provided between the two receiving rods (33). The upper part of the receiving rod (33) is provided with an elastic clamping rod (34) with elastic shortening performance. One end of the elastic clamping rod (34) is rotatably connected to the upper side of the receiving rod (33) near the middle rod (32). The other end of the elastic clamping rod (34) is fixed with a positioning hook (35). The end face of the receiving rod (33) away from the middle rod (32) is provided with a positioning slot (331). When the positioning hook (35) is inserted into the positioning slot (331), the sides of the receiving rod (33) and the middle rod (32) that are close to each other can clamp the upper edge of the opening of the flexible storage bag (4).

2. The online fully automatic aluminum foil sealing machine according to claim 1, characterized in that, The positioning slot (331) has a guide slope (332) at the opening edge.

3. The online fully automatic aluminum foil sealing machine according to claim 1, characterized in that, The ends of the connecting rods (31) that are far apart from each other are rotatably connected to the lower edge of the vertical side of the sensing head (23) away from the crossbar (21). The rotating surface of the connecting rods (31) is parallel to the vertical side of the sensing head (23) away from the crossbar (21). The sensing head (23) is provided with a limiting member (6) on its outside. The two connecting rods (31) can rotate towards each other to a horizontal and coaxial unfolded state and be fixed by the limiting member (6). The two intermediate rods (32) then rotate to a vertically downward supporting state. The two connecting rods (31) can rotate away from each other to a vertically upward retracted state. The two intermediate rods (32) then rotate to a parallel state that abuts against the top surface of the sensing head (23) and are fixed by the limiting member (6).

4. The online fully automatic aluminum foil sealing machine according to claim 3, characterized in that, The limiting member (6) includes an elastic handle (61) rotatably connected to the top surface of the sensing head (23) away from the edge of the crossbar (21). The elastic handle (61) has the property of elastic extension. Two limiting blocks (612) are fixed on the side of the elastic handle (61) away from the sensing head (23). A first slot (311) is opened on the top surface of the two connecting rods (31) when they are in the unfolded state. A second slot (341) is opened on the outer periphery of the elastic clamping rod (34) away from the receiving rod (33). When the two connecting rods (31) are in the extended state, the elastic handle (61) can rotate to a vertically downward state that abuts against the vertical side of the sensor head (23) away from the crossbar (21), and the limiting plug (612) is inserted into the first slot (311) at this time; when the two connecting rods (31) are in the retracted state and the two intermediate rods (32) are in the side-by-side state, the elastic handle (61) can rotate to a parallel state that abuts against the top surface of the sensor head (23), and the limiting plug (612) is inserted into the second slot (341) at this time.

5. The online fully automatic aluminum foil sealing machine according to claim 4, characterized in that, The limiting insert (612) has a guide slope (6121) fixed on the outer edge of the side away from the elastic handle (61).

6. The online fully automatic aluminum foil sealing machine according to claim 4, characterized in that, An elastic sleeve (611) is fitted on the outer periphery of the elastic handle (61).

7. The online fully automatic aluminum foil sealing machine according to claim 3, characterized in that, The middle rod (32) is rotatably connected to the vertical side facing the receiving rod (33) with an elastic protective plate (7) having elastic elongation properties. The side of the elastic protective plate (7) away from the middle rod (32) is fixed with a positioning plug (71) and has a positioning slot (72). When the two connecting rods (31) are in the unfolded state, the two elastic protective plates (7) can rotate to the abutting state facing each other, and the positioning plug (71) on one of the two elastic protective plates (7) is inserted into the positioning slot (72) on the other. When the two connecting rods (31) are in the retracted state and the limiting plug (612) is inserted into the second slot (341), the two elastic protective plates (7) rotate to the vertically upward protective state, and at this time the two vertical sides of the elastic protective plates (7) abut against the sides of the connecting rods (31) and the elastic handle (61) that are close to each other.

8. The online fully automatic aluminum foil sealing machine according to claim 7, characterized in that, The positioning insert (71) has a first inclined surface (711) on the outer edge of its side away from the elastic protective plate (7).

9. An online fully automatic aluminum foil sealing machine according to claim 7, characterized in that, A flexible protective curtain (5) is provided above the sensor head (23), and the top surfaces of the two elastic protective plates (7) in the protective state are detachably connected to the two sides opposite to the flexible protective curtain (5).

10. An online fully automatic aluminum foil sealing machine according to claim 9, characterized in that, The flexible protective curtain (5) is provided with fixed hooks (51) at the four corners, and the elastic protective plate (7) is provided with a fixed hanging ring (73) on the outer edge of the top surface when it is in the protective state, so that the fixed hooks (51) can be inserted.

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