Automatic packaging and sealing device

Abstract

The automatic packaging and sealing device comprises a rack, a bag opening mechanism, a filling mechanism and a heat sealing mechanism, the bag opening mechanism comprises a bag supporting assembly and a bag opening assembly which are arranged on the two sides of a packaging bag correspondingly, the bag supporting assembly and the bag opening assembly are each provided with a suction cup structure used for adsorbing the packaging bag, and the bag opening assembly further comprises a lifting structure; the lifting structure is connected to the rack, and the bag opening assembly is in driving connection with the lifting structure so that the two side faces of the packaging bag can be separated. The filling mechanism is arranged towards the bag opening mechanism and used for filling the packaging bags with materials. The heat sealing mechanism comprises a heat sealing plate structure and a bottom lining, the heat sealing plate structure is arranged on the bag opening assembly, the bottom lining is arranged on the bag supporting assembly, the lifting structure drives the heat sealing plate structure and the bottom lining to be closed or separated, and heat insulation cushions are arranged on the heat sealing plate structure and the bottom lining. According to the technical scheme, the packaging efficiency is improved, and the packaging quality is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of packaging machines, and in particular to an automatic packaging and sealing device. Background Art

[0002] Automatic packaging and sealing device is a kind of equipment used in automatic packaging production line, which is mainly used for automatic bag opening, filling and sealing of packaging bags.

[0003] However, the current packaging and sealing devices still rely on manual operation for some processes in the packaging process, including material weighing, filling, sealing and packaging. This method is not only inefficient, but also prone to packaging errors, such as uneven material filling and loose sealing, which seriously affects product quality and consumer experience. In addition, manual packaging is labor-intensive, posing a threat to the health and safety of operators, while also increasing production costs and time costs. Summary of the invention

[0004] The main purpose of the present invention is to provide an automatic packaging and sealing device, aiming to improve packaging efficiency and ensure packaging quality.

[0005] To achieve the above object, the automatic packaging and sealing device proposed by the present invention comprises:

[0006] frame;

[0007] A bag opening mechanism, the bag opening mechanism comprising a bag holding assembly and a bag opening assembly respectively arranged on both sides of the packaging bag, the bag holding assembly and the bag opening assembly are both provided with a suction cup structure for adsorbing the packaging bag, the bag opening assembly further comprising a lifting structure, the lifting structure being connected to the frame, the bag opening assembly being drivingly connected to the lifting structure to separate the two side surfaces of the packaging bag;

[0008] a filling mechanism, the filling mechanism being disposed toward the bag opening mechanism and being used for filling materials into the packaging bag; and

[0009] The heat sealing mechanism comprises a heat sealing plate structure and a bottom liner, the heat sealing plate structure is arranged on the bag opening component, the bottom liner is arranged on the bag holding component, the lifting structure drives the heat sealing plate structure and the bottom liner to close or separate from each other, and the heat sealing plate structure and the bottom liner are both provided with heat insulating cushion pads.

[0010] In a possible embodiment, the bag opening mechanism further includes two bag clamping assemblies, and the two bag clamping assemblies are respectively arranged adjacent to the bag supporting assembly and the bag opening assembly, and the two bag clamping assemblies both include a clamping structure for clamping the two side surfaces of the packaging bag after separation.

[0011] In a possible implementation, the clamping structure includes:

[0012] Fixed plate;

[0013] A mounting plate connected to the fixing plate;

[0014] A clamping block, the clamping block is connected to the fixing plate and is arranged opposite to the mounting plate, with a clamping space formed therebetween; and

[0015] A cylinder is arranged on the mounting plate, the end of the piston rod of the cylinder is connected with a clamping block, and the cylinder drives the clamping block and the clamping block to close or separate.

[0016] In a possible implementation, the heat sealing plate structure includes:

[0017] A connecting plate connected to the lifting structure;

[0018] A heat insulation board, the heat insulation board is arranged on one side of the connecting plate;

[0019] A heat sealing knife is connected to the bottom of the heat insulation board, a heating element is inserted into the heat sealing knife, and the heat insulation buffer pad is arranged on a side of the heat sealing knife away from the packaging bag.

[0020] In a possible implementation, the automatic packaging and sealing device further includes a bag sorting mechanism, and the bag sorting mechanism includes:

[0021] A driving structure, wherein the driving structure is horizontally arranged on the frame;

[0022] Two expansion plates are respectively slidably connected to the frame and drivenly connected to the driving structure. The driving structure drives the two expansion plates to move toward or away from each other at the same time to straighten and smooth the bag opening of the packaging bag.

[0023] In a possible implementation, the bag sorting mechanism further includes a vacuum suction nozzle, which is disposed between the two expansion sheets and connected to the frame.

[0024] In a possible implementation manner, the driving structure includes:

[0025] A motor, wherein the motor is mounted on the frame;

[0026] Two synchronous wheels, one of which is drivingly connected to the motor, and the two synchronous wheels are arranged at an interval;

[0027] A synchronous belt is drivingly connected to the two synchronous wheels, and the two expansion plates are respectively drivingly connected to the two sides of the synchronous belt to make the two expansion plates move toward or away from each other.

[0028] The technical solution of the present invention adopts a bag opening mechanism arranged on a frame, including a bag opening component and a bag clamping component to cooperate with each other to complete the bag opening. The bag opening component includes a bag holding component and a bag opening component respectively arranged on the two sides of the packaging bag. The bag holding component and the bag opening component are both provided with a suction cup structure. The bag opening component is also slidably connected to the frame, and the two sides of the packaging bag are adsorbed by the suction cup structure, and then the bag opening component is driven to move, so that the two sides of the packaging bag are separated; the heat sealing plate structure is driven to move by a lifting structure, so that it is pressed down toward the bag holding component to close, and the heat is transferred to the sealing of the packaging bag for fusion sealing; and a heat insulation cushion is arranged on the heat sealing plate structure and the bag holding component, which can reduce the heat loss to the surrounding environment, keep the temperature of the heat sealing area stable, and keep other components from being damaged by high temperature; it can also absorb the vibration and pressure fluctuations generated during the heat sealing process, ensure that the pressure when the heat sealing plate structure contacts the packaging bag is uniform, thereby improving the consistency and reliability of the heat seal. In summary, the automatic packaging and sealing device of the present invention not only greatly improves the packaging efficiency and reduces the labor cost, but also ensures the packaging quality and production safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0030] Figure 1 It is a structural schematic diagram of an embodiment of the automatic packaging and sealing device of the present invention;

[0031] Figure 2 It is a structural schematic diagram of an embodiment of a bag opening assembly of the present invention;

[0032] Figure 3 It is a structural schematic diagram of an embodiment of a bag holding assembly of the present invention;

[0033] Figure 4 It is a structural schematic diagram of an embodiment of a bag clamping assembly of the present invention;

[0034] Figure 5 It is a structural schematic diagram of an embodiment of a heat sealing mechanism of the present invention;

[0035] Figure 6 for Figure 5 A partial enlarged view of point A;

[0036] Figure 7 A schematic structural diagram of an embodiment of a bag sorting mechanism of the present invention.

[0037] Description of Figure Numbers:

[0038] 10. Frame; 20. Bag opening mechanism; 21. Bag holding assembly; 22. Bag opening assembly; 23. Suction cup structure; 24. Lifting structure; 25. Bag clamping assembly; 250. Clamping structure; 251. Fixing plate; 252. Mounting plate; 253. Clamping block; 254. Cylinder; 2541. Pressing block; 30. Heat sealing mechanism; 31. Heat sealing plate structure; 311. Connecting plate; 312. Heat insulation plate; 313. Heat sealing knife; 3131. Heating element; 32. Bottom lining; 33. Heat insulation cushion pad; 40. Bag sorting mechanism; 41. Driving structure; 411. Motor; 412. Synchronous wheel; 413. Synchronous belt; 42. Sheet expander; 43. Vacuum nozzle.

[0039] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0041] In view of the problems in the background technology, the present invention proposes an automatic packaging and sealing device, including a frame 10; a bag opening mechanism 20, wherein the bag opening mechanism 20 includes a bag holding component 21 and a bag opening component 22 respectively arranged on both sides of the packaging bag, wherein the bag holding component 21 and the bag opening component 22 are both provided with a suction cup structure 23 for adsorbing the packaging bag, and the bag opening component 22 also includes a lifting structure 24, wherein the lifting structure 24 is connected to the frame 10, and the bag opening component 22 is driven and connected to the lifting structure 24 so that the two sides of the packaging bag are Side separation; a filling mechanism, which is arranged toward the bag opening mechanism 20 and is used to fill materials in the packaging bag; and a heat sealing mechanism 30, which includes a heat sealing plate structure 31 and a bottom liner 32, the heat sealing plate structure 31 is arranged on the bag opening component 22, and the bottom liner 32 is arranged on the bag holding component 21, the lifting structure 24 drives the heat sealing plate structure 31 and the bottom liner 32 to close or separate from each other, and the heat sealing plate structure 31 and the bottom liner 32 are both provided with an insulating buffer pad 33.

[0042] Combined with reference Figures 1 to 7As shown, the frame 10 can be a square frame welded by profiles, which is used to carry and fix the bag opening mechanism 20, the filling mechanism, the heat sealing mechanism 30 and other components. The packaging bag is usually laid flat on a platform or a conveyor belt for bag opening operation to complete the subsequent material filling. Therefore, in this embodiment, a bag opening component 22 and a bag holding component 21 can be respectively provided on the upper and lower sides of the packaging bag, and a suction cup structure 23 with a plurality of suction nozzles arranged linearly is provided on the bag opening component 22 and the bag holding component 21. The upper and lower sides of the packaging bag are adsorbed by the suction cup structure 23 of the bag opening component 22 and the bag holding component 21, and the bag opening component 22 can be provided to be slidably connected to the frame 10, and the bag opening component 22 can be driven to move by the lifting structure 24 to stretch or open the bag mouth of the packaging bag to ensure that the opening is large enough to fill the material. It should be noted that in this embodiment, the bag opening assembly 22 is slidably arranged relative to the frame 10, or the bag holding assembly 21 can be slidably connected to the frame 10, and the bag opening assembly 22 can be fixedly connected; or, the bag opening assembly 22 and the belt holding assembly are both slidably connected to the frame 10, and the components slidably connected to the frame 10 can be driven to move by a moving mechanism such as a cylinder 254, a screw nut pair, etc., so that the bag opening is separated. In the latter two methods, since the packaging bag is obstructed by the platform or the conveyor belt during the downward adsorption process, the packaging bag will be deformed. Therefore, the platform or the conveyor belt needs to cooperate with the bag holding assembly 21 to move so that the bag opening remains in the center position.

[0043] The filling mechanism can be composed of a manipulator or a conveyor belt in conjunction with a push plate, and is arranged at the position of the bag opening. A conveying assembly can also be arranged at the front end of the heat sealing mechanism 30, and the conveying assembly is used to carry the packaging bags to be sealed and to transfer the sealed packaging bags. The conveying assembly can be a conveyor belt, or a matching mechanism of a bearing platform and a manipulator, and the packaging bags placed on the bearing platform are transferred by the manipulator. A bag holding assembly 21 can be arranged at the front end of the conveying assembly, and a bottom liner 32 can be arranged on the bag holding assembly 21 to support the part of the packaging bag that exceeds the conveying assembly. The bag holding assembly 21 can be in the shape of a long strip, and is directly fixed to the frame 10 or fixed to the frame 10 through a connecting column. A heat sealing plate structure 31 and a lifting structure 24 can be arranged above the bag holding assembly 21. The lifting structure 24 is shared with the lifting structure 24 of the bag opening mechanism 20. The lifting structure 24 can be a screw nut pair driven by a motor 411, or a cylinder 254 or a hydraulic cylinder, which provides the necessary pressure during the heat sealing process to ensure that the packaging bag is in close contact under heating. A heating element 3131 is provided in the heat sealing plate structure 31, which is usually an electric heating tube, a resistance wire or an infrared heater to provide the required heat for the fusion of the packaging bag. A heat insulation cushion 33 is also provided on the base 32 and the heat sealing plate structure 31, which has the characteristics of high temperature resistance, heat insulation, shock absorption and sealing, and can be made of high temperature resistant silicone foam, fluororubber foam material, polytetrafluoroethylene and other materials. It can reduce the heat loss to the surrounding environment, keep the temperature of the heat sealing area stable, and protect other components from high temperature damage; it can also keep the regional temperature constant, improve the efficiency and quality of heat sealing; it can also absorb the vibration and pressure fluctuations generated during the heat sealing process, ensure that the pressure when the heat sealing plate structure 31 contacts the packaging bag is uniform, thereby improving the consistency and reliability of the heat seal.

[0044] In summary, the automatic packaging and sealing device of the present invention not only greatly improves packaging efficiency and reduces labor costs, but also ensures packaging quality and production safety.

[0045] In a possible embodiment, the bag opening mechanism 20 further includes two bag clamping assemblies 25, and the two bag clamping assemblies 25 are respectively arranged adjacent to the bag supporting assembly 21 and the bag opening assembly 22, and the two bag clamping assemblies 25 both include a clamping structure 250 for clamping the two side surfaces of the packaging bag after separation.

[0046] Furthermore, in conjunction with reference Figures 2 to 4As shown, the bag opening assembly 22 and the bag holding assembly 21 need to maintain the bag opening of the packaging bag in opposite directions for a certain period of time to fill the material. Opening the bag opening only by the adsorption force of the suction cup assembly may result in incomplete bag opening or re-closing after opening due to insufficient adsorption force. In view of this, a bag clamping assembly 25 can be respectively arranged at positions adjacent to the bag opening assembly 22 and the bag holding assembly 21. The bag clamping assembly 25 is provided with a clamping structure 250, such as a clamping claw, two clamping sheets, etc., which can clamp the four corners of the bag opening after separation to keep the bag opening open, which is conducive to material filling. The bag clamping assembly 25 can be connected to the bag opening assembly 22 and the bag holding assembly 21. When the bag opening assembly 22 and the bag holding assembly 21 are opened to a certain height (for example, 50 mm), the bag clamping assembly 25 clamps the two sides of the bag opening to keep the bag opening open until the filling is completed. The bag clamping assembly 25 can also be connected to the frame 10 separately. The bag opening is completed by arranging a bag opening mechanism 20 and a bag clamping assembly 25 on the frame 10 to cooperate with each other. The bag opening mechanism 20 includes a bag holding assembly 21 and a bag opening assembly 22 respectively arranged on both sides of the packaging bag. The bag holding assembly 21 and the bag opening assembly 22 are both provided with a suction cup structure 23. The bag opening assembly 22 is also slidably connected to the frame 10, and the two sides of the packaging bag are adsorbed by the suction cup structure 23, and then the bag opening assembly 22 is driven to move to separate the two sides of the packaging bag; further, a bag clamping assembly 25 is provided on the side edges of the bag holding assembly 21 and the bag opening assembly 22, and a clamping structure 250 is provided on the bag clamping assembly 25, which can clamp the two sides of the packaging bag after the bag holding assembly 21 and the bag opening assembly 22 are separated, so as to avoid incomplete bag opening or unstable bag opening due to insufficient adsorption force or unstable adsorption of the suction cup structure 23.

[0047] In a possible implementation, the clamping structure 250 includes:

[0048] Fixed plate 251;

[0049] A mounting plate 252, the mounting plate 252 is connected to the fixing plate 251;

[0050] A clamping block 253, the clamping block 253 is connected to the fixing plate 251 and is disposed opposite to the mounting plate 252, with a clamping space being defined therebetween; and

[0051] The cylinder 254 is disposed on the mounting plate 252 , and the end of the piston rod of the cylinder 254 is connected to a clamping block 2541 . The cylinder 254 drives the clamping block 2541 and the clamping block 253 to close or separate.

[0052] Combined with reference Figure 4As shown, the fixing plate 251, the mounting plate 252 and the clamping block 253 are combined to form a semi-enclosed structure, constructing a clamping space with the opening facing the bag opening of the packaging bag. The cylinder 254 is installed on the mounting plate 252, and the piston rod of the cylinder 254 is arranged in the clamping space. The end of the piston rod of the cylinder 254 is also connected to a clamping block 2541. The clamping block 2541 can be closed or separated from the clamping block 253 under the drive of the cylinder 254, thereby achieving the clamping or release of the side of the bag opening of the packaging bag.

[0053] In a possible implementation, the heat sealing plate structure 31 includes:

[0054] A connecting plate 311, wherein the connecting plate 311 is connected to the lifting structure 24;

[0055] A heat insulation board 312, wherein the heat insulation board 312 is disposed on one side of the connecting board 311;

[0056] The heat sealing knife 313 is connected to the bottom of the heat insulation board 312. A heating element 3131 is inserted into the heat sealing knife 313. The heat insulation buffer pad 33 is arranged on a side of the heat sealing knife 313 away from the packaging bag.

[0057] Combined with reference Figure 5 and Figure 6 As shown, the connecting plate 311 is connected to the lifting structure 24, and a heat insulation plate 312 is connected to one side of the connecting plate 311 to protect other components from being damaged by high temperature. A heat sealing knife 313 is arranged at the bottom of the connecting plate 311 and the heat insulation plate 312. The heat sealing knife 313 is connected to the heating element 3131, directly contacts the packaging bag, and transfers heat to the bag opening material. In addition to the above structure, it also includes a temperature control system, including a temperature sensor and a controller, which are used to detect and adjust the temperature of the heat sealing knife 313 to ensure accurate control of the heating temperature. It can also include a cooling system, using an air cooling or water cooling system to accelerate the cooling process after heat sealing and speed up production; a positioning and guiding system can also be set to ensure the accurate position and stable guidance of the packaging bag during the heat sealing process to prevent the bag opening from shifting.

[0058] In a possible implementation, the automatic packaging and sealing device further includes a bag sorting mechanism 40, and the bag sorting mechanism 40 includes:

[0059] A driving structure 41, wherein the driving structure 41 is horizontally disposed on the frame 10;

[0060] Two expansion pieces 42 are respectively slidably connected to the frame 10 and drivenly connected to the driving structure 41. The driving structure 41 drives the two expansion pieces 42 to move toward or away from each other at the same time to straighten and smooth the bag opening of the packaging bag.

[0061] Combined with reference Figure 7 As shown, after the packaging bag is filled, the bag sorting mechanism 40 needs to ensure that the bag opening is flat and without creases so that the sealing equipment can evenly apply heat or pressure. This usually involves straightening and smoothing the bag opening, and sometimes it is necessary to align the two sides of the bag opening. For packaging bags that need to be folded and sealed, the bag sorting mechanism 40 also needs to fold the bag opening to a suitable angle in preparation for subsequent heat sealing or adhesive sealing. In view of this, a drive structure 41 is set on the frame 10. The drive structure 41 can be two cylinders 254 set back to back, or it can be a screw nut structure composed of two sections of screws with opposite thread rotation directions driven by a motor 411. The drive structure 41 drives the two expansion plates 42 to connect. The above design can make the two expansion plates 42 move toward or away from each other at the same time, so as to straighten and smooth the bag opening of the packaging bag. The expansion plate 42 can be a sheet structure made of metal, or it can be made of other materials. Illustratively, for a flat packaging bag, the two expansion pieces 42 are inserted into the bag opening and then moved away from each other to straighten and smooth the bag opening and align the two sides of the bag opening. At the same time, the residual materials or debris near the bag opening can be cleaned up, and then the heat sealing process is performed; for a three-dimensional bag, the packaging bag needs to be folded and sealed, and the side edges of the bag opening can be folded into an M shape. At this time, the two expansion pieces 42 move toward each other from the outside of the bag opening, and the bag opening is folded inward to a suitable angle for subsequent heat sealing or adhesive sealing.

[0062] In a possible implementation, the bag sorting mechanism 40 further includes a vacuum suction nozzle 43 , which is disposed between the two expansion plates 42 and connected to the frame 10 .

[0063] Combined with reference Figure 7 As shown, a vacuum nozzle 43 can be provided between the two expansion pieces 42. The vacuum nozzle 43 can be provided in a flat shape to absorb the bag opening, thereby shaping and smoothing the bag opening so as to facilitate subsequent heat sealing or adhesive sealing of the bag opening.

[0064] In a possible implementation manner, the driving structure 41 includes:

[0065] A motor 411, wherein the motor 411 is mounted on the frame 10;

[0066] Two synchronous wheels 412, one of the synchronous wheels 412 is drivingly connected to the motor 411, and the two synchronous wheels 412 are arranged at an interval;

[0067] The synchronous belt 413 is drivingly connected to the two synchronous wheels 412 , and the two expansion plates 42 are drivingly connected to the two sides of the synchronous belt 413 respectively, so that the two expansion plates 42 move toward or away from each other.

[0068] Combined with reference Figure 7As shown, the motor 411 is vertically installed on the frame 10, the rotating shaft of the motor 411 is set upward, and is driven and connected to a synchronous wheel 412, and another synchronous wheel 412 is rotatably connected to the frame 10, and a synchronous belt 413 is transmission-connected to the two synchronous wheels 412, so that a runway-shaped transmission track can be formed, and the two expansion plates 42 are respectively connected to the two sides of the synchronous belt 413, where the two sides are two straight line segments, and when the motor 411 drives the synchronous belt 413 to rotate, the two expansion plates 42 move toward or away from each other.

[0069] Further, two guide rails may be provided on both sides of the synchronous belt 413. The two guide rails may be strip-shaped and provided on both sides of the synchronous belt 413 of the driving structure 41. Two sliding seats are provided across the synchronous belt 413 and are slidably connected to the guide rails. The two sliding seats are respectively driven and connected to both sides of the synchronous belt 413 and may be clamped on the synchronous belt 413 by the clamping structure 250. A propulsion cylinder 254 is also provided on the sliding seat. The expansion sheet 42 is driven and connected to the propulsion cylinder 254 so that the expansion sheet 42 can be inserted into or away from the bag opening of the packaging bag.

[0070] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of this application, it should be understood that if the terms "upper", "lower", "left", "right", etc. indicate an orientation or position relationship based on the orientation or position relationship shown in the drawings, it is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0071] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. An automatic packaging and sealing device, characterized in that: include: frame; A bag opening mechanism, the bag opening mechanism comprising a bag holding assembly and a bag opening assembly respectively arranged on both sides of the packaging bag, the bag holding assembly and the bag opening assembly are both provided with a suction cup structure for adsorbing the packaging bag, the bag opening assembly further comprising a lifting structure, the lifting structure being connected to the frame, the bag opening assembly being drivingly connected to the lifting structure to separate the two side surfaces of the packaging bag; A filling mechanism, the filling mechanism is arranged toward the bag opening mechanism and is used to fill materials into the packaging bag; as well as The heat sealing mechanism comprises a heat sealing plate structure and a bottom liner, the heat sealing plate structure is arranged on the bag opening component, the bottom liner is arranged on the bag holding component, the lifting structure drives the heat sealing plate structure and the bottom liner to close or separate from each other, and the heat sealing plate structure and the bottom liner are both provided with heat insulating cushion pads.

2. The automatic packaging and sealing device according to claim 1, characterized in that: The bag opening mechanism also includes two bag clamping assemblies, which are respectively arranged adjacent to the bag supporting assembly and the bag opening assembly, and both of the bag clamping assemblies include a clamping structure for clamping the two side surfaces of the packaging bag after separation.

3. The automatic packaging and sealing device according to claim 2, characterized in that: The clamping structure comprises: Fixed plate; A mounting plate connected to the fixing plate; A clamping block, the clamping block is connected to the fixing plate and is arranged opposite to the mounting plate, with a clamping space formed therebetween; and A cylinder is arranged on the mounting plate, the end of the piston rod of the cylinder is connected with a clamping block, and the cylinder drives the clamping block and the clamping block to close or separate.

4. The automatic packaging and sealing device according to any one of claims 1 to 3, characterized in that: The heat sealing plate structure comprises: A connecting plate connected to the lifting structure; A heat insulation board, the heat insulation board is arranged on one side of the connecting plate; A heat sealing knife is connected to the bottom of the heat insulation board, a heating element is inserted into the heat sealing knife, and the heat insulation buffer pad is arranged on a side of the heat sealing knife away from the packaging bag.

5. The automatic packaging and sealing device according to claim 1, characterized in that: The automatic packaging and sealing device further comprises a bag sorting mechanism, and the bag sorting mechanism comprises: A driving structure, wherein the driving structure is horizontally arranged on the frame; Two expansion plates are respectively slidably connected to the frame and drivenly connected to the driving structure. The driving structure drives the two expansion plates to move toward or away from each other at the same time to straighten and smooth the bag opening of the packaging bag.

6. The automatic packaging and sealing device according to claim 5, characterized in that: The bag sorting mechanism further comprises a vacuum suction nozzle, which is arranged between the two expansion sheets and connected to the frame.

7. The automatic packaging and sealing device according to claim 6, characterized in that: The driving structure comprises: A motor, wherein the motor is mounted on the frame; Two synchronous wheels, one of which is drivingly connected to the motor, and the two synchronous wheels are arranged at an interval; A synchronous belt is drivingly connected to the two synchronous wheels, and the two expansion plates are respectively drivingly connected to the two sides of the synchronous belt to make the two expansion plates move toward or away from each other.

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