A packaging apparatus for automatically changing a melt-cut die

Abstract

The application relates to the field of automatic packaging technology, and particularly discloses a packaging device capable of automatically replacing a melt-cutting die, which comprises an upper film conveying assembly, a lower film conveying assembly, a lifting platform and melt-cutting dies, the melt-cuting dies are located above the lifting platform, the upper film conveying assembly and the lower film conveying assembly each comprise a pay-off wheel and a winding wheel, the number of the melt-cutting dies is multiple, the packaging device further comprises fixedly-installed tracks, and all the melt-cutting dies can move along the tracks; the tracks are linear tracks, the packaging device further comprises linear drivers for driving the melt-cutting dies to move along the linear tracks; or the tracks are circumferential tracks, and the packaging device further comprises circumferential drivers for driving the melt-cutting dies to move along the circumferential tracks. The scheme is used to solve the problem of low production efficiency caused by long melt-cutting die replacement time in the prior art.

Description

Technical Field

[0001] This invention relates to the field of automated packaging technology, and more specifically to a packaging device that automatically changes the melt-cutting die. Background Technology

[0002] When packaging the copper tubes of mosquito coil coils, the copper tubes (hereinafter referred to as "mosquito coil tubes") need to be encased in plastic bags. After encasing, a heat shrink machine is used to tighten the plastic bag to prevent the mosquito coil tubes from easily moving inside the plastic bag. For example, the automatic palletizing and packaging line for copper tubes with patent publication number CN110775382B has a bagging and heat shrinking mechanism. This mechanism realizes the encasing, sealing, and heat shrinking of the plastic bags for the mosquito coil tubes. However, this method is relatively complex. The inventors combined existing packaging methods in the packaging field and adopted a simplified packaging method. This simplified packaging method (such as the scheme in publication number CN215205762U) includes a lifting and lowering melting and cutting die and a lifting and lowering mechanism. The platform and the melting and cutting die include a heatable annular melting and cutting knife and an annular pressure cylinder with an elastic structure. The annular melting and cutting knife and the annular pressure cylinder are coaxial. In use, two rolls of film pass between the lifting platform and the melting and cutting die, forming an upper and lower film for packaging. Then, using the installed pushing structure, the mosquito coil tube to be packaged is pushed between the upper and lower films. The mosquito coil tube is exactly on the lifting platform. Then, the melting and cutting die is started, allowing the melting and cutting die to move downward. The annular pressure cylinder of the moving melting and cutting die first sticks the upper and lower films together. Then, the melting and cutting die continues to press down, and the annular melting and cutting knife welds the sticked upper and lower films together and cuts the welded upper and lower films from the connected films. This completes the process of the melting and cutting die moving downward, thus completing the process of the upper and lower films wrapping the mosquito coil tube from all sides, realizing the packaging of the mosquito coil tube with a plastic bag.

[0003] This ring-shaped melting and cutting method makes it easier for the heat shrink machine to tighten the plastic bag after melting and cutting, because the resulting packaging bag is ring-shaped, compared to the current rectangular plastic bags.

[0004] However, this method also has its drawbacks. The main drawback is that when the diameter of the mosquito coil changes, the annular pressure cylinder and the annular melting and cutting blade need to be replaced. However, since the annular melting and cutting blade needs to be continuously heated and maintained at a certain high temperature to achieve its melting and cutting function, it is impossible to operate at high temperatures during replacement. It is necessary to wait for the annular melting and cutting blade to cool down to a suitable temperature before disassembly. This cooling time is about 30 minutes, while the time to replace the new annular pressure cylinder and the annular melting and cutting blade is about 25 minutes. After replacement, it takes about 30 minutes to allow the annular melting and cutting blade to heat up evenly to the working temperature. This causes the entire replacement process to seriously affect the output. Summary of the Invention

[0005] The present invention aims to provide a packaging device for automatically changing the melt-cutting die, in order to solve the problem of low production efficiency caused by the excessively long change time of the melt-cutting die in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An automatic packaging device for changing melting and cutting dies includes an upper film conveying assembly, a lower film conveying assembly, a lifting platform, and melting and cutting dies. The melting and cutting dies are located above the lifting platform. Both the upper and lower film conveying assemblies include unwinding rollers and rewinding rollers. There are multiple melting and cutting dies. The device also includes a fixedly installed track, along which all melting and cutting dies can move. The track is a linear track and includes a linear driver that moves the melting and cutting dies along the linear track. Alternatively, the track is a circular track and includes a circular driver that moves the melting and cutting dies along the circular track.

[0008] The principle and advantages of this scheme are as follows: When using this scheme, if it is necessary to change the welding die according to the diameter of the mosquito coil, the annular welding knife and annular pressure cylinder of the desired specification are installed on the spare welding die in advance. The annular welding knife of the spare welding die is heated until it reaches the required working temperature. Then, the welding die is moved to the working position, while the unused welding die is moved to the non-working position along the track. When using linear track movement, the spare welding die is moved to the working position along the linear track by a linear driver, while the unused welding die, which is still at a high temperature, is moved from the working position to the non-working position along the linear track by the linear driver.

[0009] If a circular track is used, the waiting die is moved to the working position along the circular track by the circular driver, while the unused die, which is still at high temperature, is moved from the working position to the non-working position along the circular track by the circular driver.

[0010] This solution, through its track and drive design, enables rapid and safe replacement of the melting and cutting die, significantly reducing non-production downtime and substantially improving the production efficiency and flexibility of mosquito coil packaging.

[0011] Preferably, as an improvement, the system also includes a support frame for mounting all the welding dies and a fixedly mounted rack. The support frame is movable along a track, and a linear actuator is fixed to the support frame. The linear actuator includes a rotary motor and an output gear, which meshes with the rack. The length direction of the rack is parallel to the track. This solution uses a linear actuator to move the entire support frame, thereby moving the welding die to be replaced from the working position and moving the welding die to be used to the working position. The entire control process is simple and convenient.

[0012] Preferably, as an improvement, it also includes a support frame for mounting all the welding dies. The support frame is movable along a track, and a large gear is fixed on the support frame, coaxial with the track. A circumferential drive is fixedly installed, and the circumferential drive includes a rotary motor and an output pinion, which meshes with the large gear. This solution uses the circumferential drive to rotate the entire support frame, thereby rotating the welding die to be replaced from the working position and rotating the welding die to be used to the working position. The entire control is simple and convenient.

[0013] Preferably, as an improvement, the welding die includes a lifting frame and a welding die body. The lifting frame is used to drive the welding die body to rise and fall. An elastic pressure plate is installed on the lifting frame. The elastic extension and contraction direction of the elastic pressure plate is vertical. The elastic pressure plate is located at the feeding end of the upper film conveying assembly. This ensures that before the welding die presses down to weld, the elastic pressure plate brings the upper and lower films closer together, avoiding the situation where the upper film is melted off before the welding die has completely welded the upper and lower films due to the large vertical distance between the upper and lower film assemblies, thus ensuring the reliability of the welded packaging.

[0014] Preferably, as an improvement, it also includes an output line, which includes at least two conveyor bodies, with a lifting platform located between adjacent conveyor bodies; it also includes a heat shrink machine, a stacking machine, and a packing device arranged in sequence, with the heat shrink machine located at the output end of the output line and used to heat shrink the packaging bags; it also includes a continuous conveyor line that passes through the heat shrink machine and the stacking machine in sequence, with the continuous conveyor line sending the heat-shrinked packaging bags to the stacking machine, which is used to stack the packaging bags and then place them back on the continuous conveyor line; and the packing device is used to push the stacked packaging bags into cartons.

[0015] Beneficial effects: This solution enables the stacking of individual packaging bags before they are packed into cartons. Specifically, after the mosquito coil coil is formed into an individual packaging bag under the melt-cutting die, the lifting platform descends, placing the bag onto the output line. The output line then transports the bag to a heat-shrink machine for heat shrinking. The shrunken bags are then conveyed by a conveyor belt to a stacking machine for stacking. Finally, the stacked bags are transported by the conveyor belt to a carton-packing device, which loads the stacked bags into cartons. This solution improves the level of automation.

[0016] Preferably, as an improvement, the packing device includes a material placement platform, a pusher, a push plate, a packing table, and a limiting mechanism. The material placement platform is located at the output end of the conveyor line. The pusher is fixedly installed on the frame. The push plate is fixed at the output end of the pusher. The limiting mechanism is used to limit the horizontal position of the carton on the packing table. The packing table is located on the side of the push plate in the direction of movement.

[0017] Beneficial effects: When using this solution, the pusher is used to drive the push plate to push the stacked packaging bags on the material placement table into the carton that is restricted by the limiting mechanism, thus completing the packing of the stacked packaging bags on the packing table.

[0018] Preferably, as an improvement, the packing table is provided with a clearance area, and the limiting mechanism includes a side limiting component and a bottom limiting component. The side limiting component includes a left side limiting component and a right side limiting component. The side limiting components are located in the clearance area of ​​the packing table. The left side limiting component and the right side limiting component each include a side limiting baffle and a limiting baffle lifter that drives the side limiting baffle to rise and fall. The left side limiting component and the right side limiting component are both fixedly installed on a dual-output linear module. The dual-output linear module is used to drive the left side limiting component and the right side limiting component to move closer to or further away from each other. The bottom limiting component includes a bottom limiting plate and a fixedly installed translation driver. The bottom limiting plate is fixed to the output end of the translation driver. The translation driver is used to drive the bottom limiting plate closer to or further away from the bottom of the carton. The moving direction of the bottom limiting plate is parallel to the pushing direction of the push plate.

[0019] Beneficial effects: This solution provides movement space for the side limiting components by setting up an empty area on the packing table. The two side limiting components are controlled by a dual-output linear module to move closer or further apart, thereby correcting and limiting the position of cartons that have shifted. The bottom limiting component ensures that when the pusher plate pushes stacked packaging bags into the carton, it prevents the carton from moving backward and preventing the packaging bags from being pushed in.

[0020] Preferably, as an improvement, a bottom suction cup is installed on the bottom limiting plate, and a lower cover plate clearance area is provided on the packing platform, the lower cover plate clearance area being located in the moving direction of the bottom limiting plate; the packing device also includes a fixed guide plate and an lifting assembly, the guide plate extending above the lower cover plate clearance area; the lifting assembly is located above the guide plate, and the lifting assembly includes an lifting plate and a lifting plate lifter that drives the lifting plate to rise and fall.

[0021] Beneficial effects: Using this solution, the bottom suction cup moves the carton closer to the push plate. After the carton is pushed by the bottom limiting plate, the lower cover of the carton can fall into the lower cover clearance area. Continuing to push the carton towards the guide plate allows the lower cover to insert between the guide plate and the lower cover clearance area, thus pressing the lower cover down and preventing it from tilting upwards. This ensures that the lower cover does not obstruct the pushing of stacked packaging bags into the carton. While the lower cover is inserted below the guide plate, the upper cover is also inserted above the lowered lifting plate. Then, the lifting plate mechanism is activated, flipping the upper cover upwards to prevent it from blocking the path of the stacked packaging bags into the carton, ensuring that the stacked packaging bags can be pushed into the carton stably in one go.

[0022] Preferably, as an improvement, it also includes a bottom support corner placement device, a mouth support corner placement device, and a transferor. The bottom support corner placement device is used to place the support corner into the bottom of the carton, and the mouth support corner placement device is used to place the support corner into the mouth of the carton. There are transferors between the bottom support corner placement device and the packing table, and between the packing table and the mouth support corner placement device. Both the bottom support corner placement device and the mouth support corner placement device include a space mover, a pick-and-place claw installed at the output end of the space mover, and a limiting component for restricting the movement of the carton.

[0023] Beneficial effects: Using this solution, bottom support corners are inserted into the carton via the bottom support corner insertion device. After insertion, the carton is transferred to the packing table using a transfer device. Once the stacked packaging bags are packed, the carton containing the packaging bags and bottom support corners is then sent to the opening support corner insertion device via the transfer device, thus achieving the function of inserting support corners at the carton opening. During insertion, the support corners, held by the pick-and-place claws, are inserted into the carton via a spatial mover.

[0024] This solution significantly improves the automation level of mosquito coil packaging by automating the bottom support corner insertion device and the mouth support corner insertion device, reducing manual intervention, lowering labor intensity, and increasing packing efficiency.

[0025] This solution uses precisely positioned support angles via a spatial mover to create a stable frame inside the carton, effectively improving the overall strength of the carton.

[0026] This solution, through the design of a spatial mover and a picking claw, ensures that the support corners inside each carton are placed in the same position, avoiding the instability of manual operation, improving the consistency of packaging quality, and guaranteeing that each carton of mosquito coils receives the same level of protection.

[0027] Preferably, as an improvement, it also includes a support corner forming device, which includes a forming rotator, a forming mold, a bending pusher, and a bending pusher. The forming rotator is used to drive the forming mold to rotate. The cross-section of the forming mold is an equilateral triangle. The forming mold is provided with a negative pressure adsorption hole. The bending pusher is located below the forming mold and is located on the side of the central axis of the forming mold. The bending pusher is used to push the bending pusher to move closer to the forming mold to bend the cardboard.

[0028] Beneficial effects: When using this solution, the cardboard is bent using the support corner forming device. When the cardboard needs to be bent into a triangular support corner, the cardboard is first attracted by the negative pressure of the forming mold. Then, the forming rotator is controlled to drive the forming mold to rotate. When the edge of the forming mold is located on the side of the bending pusher, the bending pusher is controlled to drive the bending pusher to move closer to the forming mold, thereby bending the cardboard along the edge of the forming mold. Since the forming mold is an equilateral triangle, the bending method of the other two folds is exactly the same. After the three sides are bent, a complete triangular support corner is formed. After the bending is completed, the space mover drives the picking claw to remove the formed triangular support corner from the forming mold. Attached Figure Description

[0029] Figure 1 This is a front view of Embodiment 1 of the present invention.

[0030] Figure 2 This is a top view of the lifting platform and output line according to Embodiment 1 of the present invention.

[0031] Figure 3 This is a top view of multiple melting and cutting dies, a feeding conveyor line, and a production line in Embodiment 1 of the present invention.

[0032] Figure 4 This is a left view showing the connection relationship between multiple melting and cutting dies, support frame, and track in Embodiment 1 of the present invention.

[0033] Figure 5 for Figure 5 A bottom view.

[0034] Figure 6 for Figure 1 A partial schematic diagram (to illustrate the structure of the melt cutting die).

[0035] Figure 7 This is a top view showing the connection relationship between multiple melting and cutting dies, support frame, and track in Embodiment 2 of the present invention.

[0036] Figure 8 This is a front view of Embodiment 3 of the present invention.

[0037] Figure 9 This is a top view of Embodiment 4 of the present invention.

[0038] Figure 10 This is a partial top view of Embodiment 4 of the present invention.

[0039] Figure 11 Compared to Embodiment 3, Embodiment 4 only shows a three-dimensional structural schematic diagram of the packing device, the bottom support corner placement device, the transferor, and the support frame forming device.

[0040] Figure 12 for Figure 11 A schematic diagram of the three-dimensional structure after rotation at a certain angle.

[0041] Figure 13 This is a three-dimensional structural schematic diagram of the packing device according to Embodiment 4 of the present invention.

[0042] Figure 14 for Figure 13 A schematic diagram of the three-dimensional structure after rotation at a certain angle.

[0043] Figure 15 for Figure 13 The main view.

[0044] Figure 16 for Figure 13 The middle section shows a left cross-sectional view of the structure of the upper suction component.

[0045] Figure 17 This is a three-dimensional structural diagram illustrating the relationship between the side limiting component and the dual-output linear module structure in Embodiment 4 of the present invention (view direction and...). Figure 13 same).

[0046] Figure 18 for Figure 11 A three-dimensional structural diagram of the bottom support corner placement device, the support corner forming device, and the transferor.

[0047] Figure 19 for Figure 12 A three-dimensional structural diagram of the bottom support corner placement device, the support corner forming device, and the transferor.

[0048] Figure 20 This is a three-dimensional structural schematic diagram of the support angle placement device and the transferor shown in Embodiment 4 of the present invention.

[0049] Figure 21 for Figure 20 A schematic diagram of a local structure.

[0050] Figure 22 for Figure 21 The main view.

[0051] Figure 23 A simplified diagram illustrating the relationship between a bidirectional driver and a linear driver.

[0052] Figure 24 This is a schematic diagram of the three-dimensional structure of the picking claw in Embodiment 4 of the present invention.

[0053] Figure 25 This is a three-dimensional structural diagram showing the close-fitting claws and the separate elastic pressure block on the picking claw.

[0054] Figure 26 This is a three-dimensional structural schematic diagram of the support corner forming device according to Embodiment 4 of the present invention (a cardboard is placed on the loading platform and the cardboard is also adsorbed on the picking robot arm).

[0055] Figure 27 for Figure 26 The main view.

[0056] Figure 28 for Figure 26 Top view.

[0057] Figure 29 for Figure 26 A magnified view of a portion of the image.

[0058] Figure 30 for Figure 26 A partial front sectional view.

[0059] Figure 31 This is a schematic diagram illustrating the relationship between the forming mold, the bending pusher, and the bending pusher in Embodiment 4 of the present invention (the limiting block has been removed from the diagram).

[0060] Figure 32 for Figure 31 The left view.

[0061] Figure 33 This is a perspective view of the mosquito coil tray, after being packed according to Embodiment 4 of the present invention, inside the cardboard box. Detailed Implementation

[0062] The following detailed description illustrates the specific implementation method:

[0063] The reference numerals in the accompanying drawings include: 1. Feeding conveyor line; 1-1. Support plate; 1-2. Linear pusher; 1-3. Pusher plate; 2. Upper film conveying assembly; 2-1. Unwinding roller; 2-2. Rewinding roller; 3. Lifting platform; 3-1. Lifting driver; 3-2. Supporting vertical plate; 4. Melting die; 4-1. Lifting frame; 4-2. Melting die body; 4-3. Elastic pressure plate; 5. Track; 5-1. Linear driver; 5-2. Support frame; 5-2. Moving wheel; 5-21. Rack; 5-3. Output line; 6. Circular driver; 5-1. Large gear; 5-4. Heat shrink machine; 7. Stacking machine; 8. Moving arm; 8-1. Lifting arm; 8-2. Gripping suction cup; 8-3. Pusher; 22. Pusher plate; 23. Continuous conveyor line; 9.

[0064] Example 4: Bottom support corner placement device 10, packing device 20, opening support corner placement device 30, transferor 40, support corner forming device 50.

[0065] Support angle placement device 10: spatial mover 11, pick-and-place claw 12 (support base 120, approach driver 121, left approach claw 122, right approach claw 123, elastic pressure block 124 (pressure block body 1241, slide bar 1242), elastic pressure block driver 125, connecting plate 1251), limiting component 13 (bottom baffle 131, side baffle 132, lifter 133), bidirectional driver 14 (gear 141, rack 142), linear driver 15, rotator 16 (rotating base 161, rotation driver 162).

[0066] Support angle forming device 50: loading platform 51, material handling robot 52 (translation module 521, lifting module 522, part handling mounting plate 523, part handling suction cup 524), forming mold 53 (negative pressure hollow hole 531, negative pressure adsorption hole 532, limiting block 533, limiting groove 534), bending pusher 54, bending pusher 55 (pushing seat 551, pushing roller 552).

[0067] Packing device 20: material placement platform 21, pusher 22, push plate 23, packing table 24, limiting mechanism 25 (side limiting component 251 (side limiting baffle 2511, limiting baffle lifter 2512), bottom limiting component 252 (bottom limiting plate 2521, translation driver 2522, bottom suction cup 2523), dual output linear module 253 (bidirectional threaded screw 2531, drive motor 2532, slider 2533), guide plate 26, lifting component 27 (lifting plate 271, lifting plate lifter 272), upper suction component 28 (upper suction cup 281, suction cup lifter 282).

[0068] Cardboard box 60, support corner 70, mosquito coil tray 80.

[0069] Example 1

[0070] Combination Figures 1 to 6 An automatic packaging device for changing melting and cutting molds includes a frame, a feeding conveyor line 1, an upper film conveying assembly 2, a lower film conveying assembly, a lifting platform 3, multiple melting and cutting molds 4, and an output line 6. The feeding conveyor line 1 is used for the automatic conveying of mosquito coil coils. A support plate 1-1 is fixedly installed near the output end of the feeding conveyor line 1. The melting and cutting molds 4 are located above the support plate 1-1. The support plate 1-1 has vertical clearance holes facing the melting and cutting molds 4. The lifting platform 3 is located at the clearance hole position. The lifting platform 3 includes a lifting driver 3-1 and a support vertical plate 3-2 fixed to the output end of the lifting driver 3-1. The output line 6 includes at least two conveyor body bodies. The support vertical plate 3-2 of the lifting platform 3 is located between adjacent conveyor body bodies, so that after the lifting platform 3 descends, the finished packaging bags can fall onto the output line 6 and be sent to the next process. In this embodiment, the output line 6 is two belt conveyors.

[0071] Both the upper film conveying assembly 2 and the lower film conveying assembly include an unwinding roller 2-1 and a winding roller 2-2. The unwinding roller 2-1 and the winding roller 2-2 are rotatably connected to the frame. The film unwound from the upper film conveying assembly 2 and the film unwound from the lower film conveying assembly are located between the melting and cutting die 4 and the support plate 1-1.

[0072] It also includes a fixedly installed track 5, which is a straight track 5. Multiple melting and cutting dies 4 are installed on the same support frame 5-2. The bottom of the support frame 5-2 is equipped with casters 5-21, which can travel or move on the track 5.

[0073] A linear actuator 5-1 is also installed on the support frame 5-2 to move the support frame 5-2 along the linear track 5. A rack 5-3 is fixed next to the track 5, and the length direction of the rack 5-3 is parallel to the track 5. The linear actuator 5-1 includes a rotary motor and an output gear, which meshes with the rack 5-3. When the rotary motor of the linear actuator 5-1 is started, the output gear meshes with the rack 5-3, thereby driving the entire support frame 5-2 to move linearly along the rack 5-3 and the track 5. When the required melting and cutting die 4 is moved to the working position, the linear actuator 5-1 stops.

[0074] The configuration of this embodiment enables the melting and cutting die 4 to be replaced quickly and safely. When the melting and cutting die 4 is working in the working position, the annular melting and cutting knife and the annular pressure cylinder of the spare melting and cutting die 4 can be replaced, thereby greatly reducing non-production time and significantly improving the production efficiency and flexibility of mosquito coil packaging.

[0075] Furthermore, to improve the quality of the packaging bags produced by the melting and cutting die 4, the melting and cutting die 4 includes a lifting frame 4-1 and a melting and cutting die body 4-2. The lifting frame 4-1 is used to drive the melting and cutting die body 4-2 to rise and fall. An elastic pressure plate 4-3 is installed on the lifting frame 4-1. The elastic extension and contraction direction of the elastic pressure plate 4-3 is vertical. The elastic pressure plate 4-3 is located at the feeding end of the upper film conveying assembly 2. When the lifting frame 4-1 drives the melting and cutting die 4 to descend, the elastic pressure plate 4-3 contacts the upper film before the melting and cutting die body 4-2, thereby achieving pre-compression of the upper and lower films before melting and cutting. After the annular pressure cylinder of the melting and cutting die body 4-2 presses down on the upper and lower films, the melting and cutting die body 4-2 continues to move down, so that the annular melting and cutting blade on the melting and cutting die body 4-2 welds the stacked upper and lower films together to form the packaging bag. In this embodiment, the melting and cutting die 4 is constructed as the annular cutting assembly in the publication number CN215205762U "A Packaging Cutting Device".

[0076] In addition, to improve the level of automation, a feeding pusher is installed above the output end of the feeding conveyor line 1. The feeding pusher includes a linear pusher 1-2 and a pusher plate 1-3. After the linear pusher 1-2 drives the linear pusher plate 1-3, it pushes the mosquito coil at the end of the feeding conveyor line 1 toward the support plate 1-1 and pushes the mosquito coil to the position of the clearance hole. After the mosquito coil is received by the lifting platform 3 which rises to the height of the support plate 1-1, the feeding pusher retracts.

[0077] In this embodiment, in order to speed up the separation of the packaging bag from the film after the upper and lower films are melted and cut, a support plate 1-1 is fixedly installed between the upper film conveying component 2 and the lower film conveying component. The support plate 1-1 has a clearance hole for the mosquito coil packaging bag to move downward with the lifting platform 3.

[0078] Example 2

[0079] Combination Figure 7 The difference between Embodiment 2 and Embodiment 1 is that Embodiment 1 uses a linear track and a linear driver, while in Embodiment 2 the track 5 is a circular track 5 and the driver is a circular driver 5-1. The circular driver 5-1 is used to drive the support frame 5-2 to move circumferentially along the circular track 5.

[0080] A large gear 5-4 is fixed on the support frame 5-2, and the large gear 5-4 is coaxial with the track 5. A circumferential driver 5-1 is fixedly installed. In this embodiment, the circumferential driver 5-1 is fixed on the frame. The circumferential driver 5-1 includes a rotary motor and an output pinion. The pinion meshes with the large gear 5-4. When it is necessary to replace the melting and cutting die 4, the circumferential driver 5-1 is started, so that the pinion drives the large gear 5-4 to rotate. The large gear 5-4 drives the support frame 5-2 to rotate, thereby causing the melting and cutting die 4 on the support frame 5-2 to change position and transfer the waiting melting and cutting die 4 to the working position.

[0081] Compared to Embodiment 1, the solution in Embodiment 2 is also simple in structure.

[0082] Example 3

[0083] Combination Figure 8 Example 3 proposes an automatic melting and cutting mold changing packaging production line based on Example 1. It includes the automatic melting and cutting mold changing packaging device of Example 1, and also includes a heat shrink machine 7, a stacking machine 8 and a box packing device 20.

[0084] The heat shrink machine 7 is located at the output end of the output line 6, and is used to heat shrink the packaging bag.

[0085] The system also includes a conveyor line 9 that sequentially passes through a heat shrink machine 7 and a stacking machine 8. The conveyor line 9 delivers the heat-shrinked packaging bags to the stacking machine 8, which stacks the bags and then places them back onto the conveyor line 9. A boxing device 20 pushes the stacked bags into cartons. Specifically, the stacking machine 8 can use a robot or a lifting-function robotic arm for stacking. The conveyor line 9 is multi-segmented, with each segment controlled separately. This ensures that when stacking packaging bags, each segment of the conveyor line 9 can pause transporting the bags. After stacking, the bags are then transported to the boxing device 20 for boxing. In this embodiment, the stacking machine 8 has the following structure:

[0086] The stacking machine 8 includes a horizontal moving arm 8-1, a lifting arm 8-2, and a gripping suction cup 8-3. The output end of the horizontal moving arm 8-1 is fixed to the lifting arm 8-2, and the output end of the lifting arm 8-2 is fixed to the gripping suction cup 8-3. The horizontal moving arm 8-1 is used to drive the gripping suction cup 8-3 to move along the direction of the conveyor line 9, moving the gripping suction cup 8-3 from the front section to the back section of the conveyor line 9. The lifting arm 8-2 is used to drive the gripping suction cup 8-3 to rise and fall, thereby approaching the mosquito coil packaging bag to be gripped and stacking the mosquito coil packaging bag. The reason why the gripping suction cup 8-3 can grip the packaging bag is that after the packaging bag is heat-shrinked, the upper and lower surfaces of the packaging bag are in a flat and taut state, and the suction cup can pick up the packaging bag.

[0087] The packing device 20 includes a pusher 22 and a push plate 23. The pusher 22 drives the push plate 23 to move, thereby pushing the mosquito coil packaging bag into the open carton.

[0088] This embodiment realizes the process from melt-cutting packaging bags, heat-shrink packaging bags, stacking packaging bags to packing the packaging bags into boxes, which greatly improves the degree of automation.

[0089] Example 4

[0090] Combination Figures 9 to 32 This embodiment makes the following improvements based on embodiment four: first, the specific design of the packing device 20 is optimized; second, this embodiment also includes a bottom support corner placement device 10, an opening support corner placement device 30, a transferor 40, and a support corner forming device 50.

[0091] Combination Figures 9 to 12The bottom support corner placement device 10 and the opening support corner placement device 30 are respectively located on both sides of the packing device 20. Each of the bottom support corner placement device 10 and the opening support corner placement device 30 has a corresponding support corner forming device 50. A transferor 40 is provided between the bottom support corner placement device 10 and the packing device 20, and a transferor 40 is also provided between the packing device 20 and the opening support corner placement device 30. In this embodiment, the transferor 40 is a driven roller conveyor line, which realizes the connection between the front and rear processes. The transferor 40 passes through the bottom support corner placement device 10 and the opening support corner placement device 30. The bottom support corner placement device 10 is used to place the triangular support corner 70 into the bottom of the carton 60; the packing device 20 is used to push the stacked mosquito coil tube packaging bags into the carton 60, so that the mosquito coil tube packaging bags are tightly attached to the bottom support corner 70; the opening support corner placement device 30 is used to place the support corner 70 into the opening of the carton 60.

[0092] The specific structures of the packing device 20, the support angle 70 insertion device, and the support angle forming device 50 are as follows:

[0093] I. Structural Design of Packing Device 20

[0094] Combination Figures 13 to 17 The packing device 20 includes a material placement platform 21, a pusher 22, a pusher plate 23, a packing platform 24, and a limiting mechanism 25. The pusher 22 and the packing platform 24 are fixedly installed. The load-bearing tops of the material placement platform 21 and the packing platform 24 are at the same height. The packing platform 24 is placed on one side of the material placement platform 21, which is a roller conveyor type rotary table. Stacked mosquito coil tube packaging bags that need to be packed are transferred from the conveyor line 9 to the material placement platform 21, preparing them for being pushed into the cartons 60 on the packing platform 24.

[0095] The push plate 23 is fixed to the output end of the pusher 22. The limiting mechanism 25 is used to limit the horizontal position of the carton 60 on the packing table 24, which is located on the side of the push plate 23 in the direction of movement. The pusher 22 is used to drive the push plate 23 to push the mosquito coil tube packaging bag on the material placement table 21 into the carton 60 that is limited by the limiting mechanism 25. The packed carton 60 is located on the packing table 24. The packing table 24 is a roller conveyor line.

[0096] The specific packing table 24 is provided with a clearance area. The limiting mechanism 25 includes a side limiting component 251 and a bottom limiting component 252. The side limiting component 251 includes a left side limiting component 251 and a right side limiting component 251. The side limiting component 251 is located within the clearance area of ​​the packing table 24. Both the left side limiting component 251 and the right side limiting component 251 include a side limiting baffle 2511 and a limiting baffle lifter 2512 that drives the side limiting baffle 2511 to rise and fall. Both the left side limiting component 251 and the right side limiting component 251 are fixedly installed on the dual-output linear module 253. Mounted on a frame, the dual-output linear module 253 includes a bidirectional threaded screw 2531, a drive motor 2532, a slide rail, and two sliders 2533. The drive motor 2532 and the slide rail are fixed on the frame. The drive motor 2532 drives the screw to rotate. The two sliders 2533 are respectively fixed on different threaded sections of the bidirectional threaded screw 2531. The sliders 2533 are interactively connected to the slide rail. The left side limiting component 251 and the right side limiting component 251 are respectively fixed on the two sliders 2533, so that after the drive motor 2532 of the upper output linear module is started, the left and right side limiting components 251 can move closer or further away from each other.

[0097] The bottom limiting assembly 252 includes a bottom limiting plate 2521 and a fixedly installed translation driver 2522. The bottom limiting plate 2521 is fixed to the output end of the translation driver 2522. The translation driver 2522 is used to drive the bottom limiting plate 2521 closer to or away from the bottom of the carton 60. The moving direction of the bottom limiting plate 2521 is parallel to the pushing direction of the push plate 23.

[0098] To ensure accurate packing of the mosquito coil coils 80, a bottom suction cup 2523 is installed on the bottom limiting plate 2521, allowing the carton 60 to move away from or towards the push plate 23 via the bottom suction cup 2523. A lower cover clearance area is provided on the packing table 24, located in the moving direction of the bottom limiting plate 2521, so that after the carton 60 is pushed by the bottom limiting plate 2521, the lower cover of the carton 60 can fall into the lower cover clearance area. A guide plate 26 is also fixed on the frame, extending above the lower cover clearance area, so that after the carton 60 is pushed towards the guide plate 26, the lower cover can be inserted between the guide plate 26 and the lower cover clearance area, thereby pressing the lower cover down and preventing it from tilting upwards. This ensures that the lower cover does not affect the pushing of the stacked packaging bags into the carton 60.

[0099] To prevent the mosquito coil tray 80 from being pushed in due to the collapse of the wide cardboard box 60 in the middle, an lifting assembly 27 is provided on the frame. The lifting assembly 27 is located above the guide plate 26. The lifting assembly 27 includes an lifting plate 271 and a lifting plate lifter 272 that drives the lifting plate 271 to rise and fall.

[0100] To further ensure the rapid insertion of the mosquito coil 80 packaging bag after the carton 60 is opened, an upper suction assembly 28 is also included on the frame. The upper suction assembly 28 includes an upper suction cup 281 and a suction cup lifter 282 that drives the upper suction cup 281 to rise and fall. The suction cup lifter 282 and the lifting plate lifter 272 are both fixed on the frame. The upper suction cup 281 is located between the upper lifting plate 271 and the bottom limiting plate 2521. The upper suction cup 281 is used to adhere to the upper surface of the carton 60 to prevent the middle of the upper surface of the carton 60 from collapsing and affecting the insertion of the mosquito coil 80 packaging bag.

[0101] II. Design and Structure of Bottom Support Angle Insertion Device 10 and Mouth Support Angle Insertion Device 30

[0102] Combination Figures 18 to 25 The bottom support corner placement device 10 and the mouth support corner placement device 30 have the same structure. Both are located above the transferor 40 and include a space mover 11, a pick-and-place claw 12 installed at the output end of the space mover 11, and a limiting component 13 for restricting the movement of the carton 60. In this embodiment, triangular support corners 70 are placed at predetermined positions at the bottom of the carton 60 and at predetermined positions at the mouth of the carton 60 containing the mosquito coil tube packaging bag. In this embodiment, to achieve the placement of both support corners 70 at once, two symmetrical pick-and-place claws 12 are installed at the output end of the space mover 11. The output end of the space mover 11 is fixedly connected to a bidirectional driver 14. The bidirectional driver 14 has two outputs, and the two outputs of the bidirectional driver 14 always move in opposite directions. For example, a bidirectional rack and pinion driver 142 can be used. Figure 23 As shown, the output of the bidirectional rack and pinion 142 driver is a gear 141, which meshes with the symmetrical racks 142. Each rack 142 is fixed with a pick-and-place claw 12, so that when the motor of the bidirectional rack and pinion 142 drives the gear 141 to rotate, the two pick-and-place claws 12 can move closer or further away from each other as the racks 142 move, thereby realizing the adjustment of the distance between the two pick-and-place claws, which is suitable for the support angle 70 placement requirements of different sized cartons 60.

[0103] In this embodiment, the space mover 11 is a three-dimensional space mover 11 capable of moving along the X-axis, Y-axis, and Z-axis. Of course, the space mover 11 can also be a robot or a robotic arm capable of moving in three-dimensional space.

[0104] A linear driver 15 is provided between each pick-and-place claw 12 and the output end of the bidirectional driver 14. The linear driver 15 is used to drive the pick-and-place claw to move closer to or away from the bottom of the carton 60 after the support angle 70 is aligned with the carton 60, so as to realize the action of putting the support angle 70 into the carton 60.

[0105] Each pick-and-place gripper 12 includes a support base 120, a proximity driver 121, a left proximity gripper 122, a right proximity gripper 123, and an elastic pressure block 124. The support base 120 is mounted on the output end of the linear driver 15. The proximity driver 121 is fixed on the support base 120. The proximity driver 121 is used to drive the left proximity gripper 122 and the right proximity gripper 123 to move away from or towards each other. In this embodiment, the proximity driver 121 is a cylinder-type parallel gripper. The left proximity gripper 122 and the right proximity gripper 123 are respectively fixed on the two output blocks of the parallel gripper.

[0106] Combination Figure 25 There are two elastic pressure blocks 124, which are symmetrical about the support angle 70 and located between the left abutting claw 122 and the right abutting claw 123. The elastic pressure blocks 124 are used to press on the support angle 70. Before the left and right abutting claws 123 clamp the support angle 70, the two symmetrically arranged elastic pressure blocks 124 press down on the support angle 70 to prevent the support angle 70 from moving, thereby ensuring that the left and right abutting claws 123 accurately pick up the support angle 70. When the support angle 70 is placed in the carton 60, after the left and right abutting claws 123 release the support angle 70, the support angle 70 will be pressed against the carton 60 by the elastic pressure blocks 124, ensuring that the support angle 70 is accurately placed in place.

[0107] Combination Figures 22 to 25 The pick-and-place claw 12 also includes an elastic pressure block driver 125 fixedly mounted on the support base 120. The elastic pressure block driver 125 is used to adjust the position of the elastic pressure block 124 to improve the practicality of this embodiment. The driving direction of the elastic pressure block driver 125 is parallel to the deformation direction of the elastic pressure block 124, and the deformation direction of the elastic pressure block 124 is parallel to the moving direction when the support angle 70 is placed into the carton 60.

[0108] Specifically, the elastic block driver 125 is a cylinder. The elastic block driver 125 is fixed on the support base 120. The output end of the elastic block driver 125 is fixed with a U-shaped connecting plate 1251. The two free ends of the U-shaped connecting plate 1251 are equipped with elastic blocks 124. The elastic block 124 includes a block body 1241, a slide rod 1242 fixedly connected to the block body 1241, and a spring sleeved on the slide rod 1242. The slide rod 1242 is slidably connected to the connecting plate 1251, and the spring is located between the block body 1241 and the connecting plate 1251.

[0109] A rotator 16 is also installed between each linear actuator 15 and the picking claw. The rotator 16 is used to drive the support base 120 of the picking claw to rotate at an angle. The output shaft of the rotator 16 is horizontally set, and the output direction of the linear actuator 15 is also located in the horizontal plane, and the output direction of the linear actuator 15 is perpendicular to the output shaft of the rotator 16. By limiting the rotator 16, its output shaft, and the output direction of the linear actuator 15, the support angle 70 can be inserted horizontally, reducing the difficulty of inserting the support angle 70.

[0110] In this embodiment, the rotator 16 includes a rotating seat 161 and a rotating driver 162. The rotating seat 161 is rotatably connected to the output end of the linear driver 15. The rotating driver 162 is a cylinder. The output rod of the cylinder is rotatably connected to the rotating seat 161 at an eccentric position. The rotating driver 162 is installed at the output end of the linear driver 15. The support seat 120 of the picking claw is fixedly connected to the rotating seat 161.

[0111] Combination Figures 18 to 20 The limiting component 13 that restricts the movement of the carton 60 includes a bottom baffle 131 and a side baffle 132. The side baffle 132 and the bottom baffle 131 together limit the horizontal position of the carton 60. The side baffle 132 is perpendicular to the conveying direction of the transferor 40, and the bottom baffle 131 is parallel to the conveying direction of the transferor 40. The side baffle 132 is fixedly connected to the output end of the elevator 133 and is fixed within the clearance zone of the transferor 40. In this embodiment, the transferor... The clearance zone 40 is the space between adjacent rollers. In this embodiment, the lifting device 133 is a cylinder. The lifting device 133 controls the rise of the side baffle 132, thereby preventing the carton 60 from moving to another position before the support angle 70 is placed during the transport by the transferor 40. The bottom baffle 131 limits the bottom of the carton 60 from the outside (in this embodiment, the bottom baffle 131 is fixed to the transferor 40), ensuring that the carton 60 will not move when the support angle 70 is placed inside. After the support angle 70 is placed, the lifting device 133 drives the side baffle 132 to descend, facilitating the transport of the carton 60 with the bottom support angle 70 to the next process under the action of the transferor 40.

[0112] III. Structural Design of the Support Angle Forming Device 50

[0113] A support corner forming device 50 is provided next to both the bottom support corner placement device 10 and the mouth support corner placement device 30.

[0114] Combination Figures 26 to 32The corner forming device 50 includes a loading platform 51, a material handling robot 52, a forming rotary device, a forming mold 53, a bending pusher 54, and a bending pusher 55. The material handling robot 52 includes a translation module 521, a lifting module 522, a material handling mounting plate 523, and a material handling suction cup 524 mounted on the material handling mounting plate 523. The translation module 521 is fixed to the frame, the lifting module 522 is fixed to the output end of the translation module 521, and the material handling mounting plate 523 is fixed to the output end of the lifting module 522. The material handling suction cup 524 is connected to a negative pressure machine and is fixed to the material handling mounting plate 523. The moving direction of the translation module 521 is the same as the moving direction of the transferor 40. The material handling robot 52 uses the translation module 521 and the lifting module 522 to drive the suction cup to remove the cardboard to be processed from the loading platform 51, and then sends the cardboard to the forming mold 53 for forming.

[0115] A forming rotator is fixedly mounted on the frame and used to drive the forming mold 53 to rotate. The forming mold 53 has an equilateral triangular cross-section and a negative pressure hollow hole 531 inside. The negative pressure hollow hole 531 is connected to multiple negative pressure adsorption holes 532, which are arranged on the outer peripheral surface (i.e., the forming surface) of the forming mold 53. The negative pressure hollow hole 531 is connected to a negative pressure machine. A bending pusher 55 is located below the forming mold 53 and is located on the side of the central axis of the forming mold 53. A bending pusher 54 is fixed on the frame and used to push the bending pusher 55 to move closer to the forming mold 53 to bend the cardboard. In the non-working state, the distance between the bending pusher 55 and the central axis of rotation of the forming mold 53 is greater than the distance from the central axis of rotation of the forming mold 53 to the forming surface of the forming mold 53, and the distance between the bending pusher 55 and the central axis of rotation of the forming mold 53 is less than the distance from the edge of the forming mold 53 to the central axis of rotation.

[0116] To ensure initial positioning when the cardboard is bent, a limiting block 533 is fixed on the forming mold 53. A limiting groove 534 is provided between the limiting block 533 and the forming mold 53. The limiting block 533 is fixed at the edge of the forming mold 53.

[0117] Combination Figures 30 to 32 To prevent the cardboard from breaking during the bending process into a triangular support angle 70, the bending pusher 55 is designed to include a pusher seat 551, a pusher roller 552, a sliding rod fixed on the pusher seat 551, and an elastic element (spring) sleeved on the sliding rod. The pusher roller 552 is rotatably connected to the pusher seat 551, and the sliding rod is vertically slidably connected in the fixed mounting sleeve. The elastic element is located between the fixed sleeve and the pusher seat 551 (in this embodiment, the fixed sleeve is fixed on the housing of the bending pusher 54). The pusher roller 552 is used to contact the cardboard formed by the forming mold 53.

[0118] In this embodiment, the push roller 552 of the bending pusher 55 and the elastic setting can reduce the frictional resistance during the cardboard bending process, reduce wear and damage caused by direct friction, and ensure the smoothness and accuracy of the bending action, thus guaranteeing the high quality of the support angle 70 forming.

[0119] The method for producing an 80-tube mosquito coil in this embodiment includes the following steps:

[0120] S1. Mosquito coil 80 is bagged using a melt-cutting die to obtain mosquito coil 80 tube packaging bags.

[0121] S2. Use a heat shrink machine to heat shrink the packaging bag of 80 mosquito coil tubes.

[0122] S3. Use a stacking machine to stack the 80-tube mosquito coil packaging bags.

[0123] S5. Bottom support corner 70 is placed into carton 60: First, the space mover 11 in the bottom support corner placement device 10 drives the pick-and-place claw 12 to precisely grasp the support corner 70 and place it in a predetermined position at the bottom of the carton 60. The restraining component 13 ensures that the carton 60 remains stationary during this process, avoiding placement errors caused by movement of the carton 60. By precisely controlling the path of the space mover 11, the support corner 70 can be accurately placed in the predetermined position at the bottom of the carton 60.

[0124] S6. Packaging of mosquito coil tubes: The carton 60 with bottom support corners 70 is sent to the packing device 20 via the transferor 40. At this stage, the mosquito coil tube packaging bag is put into the carton 60 by the packing device 20, ensuring that the mosquito coil tubes abut against the bottom support corners 70 inside the carton 60.

[0125] S7. Mouth support angle 70 placed into carton 60: The carton 60 containing the mosquito coil tube 80 is transferred to the mouth support angle placement device 30 by the transferor 40. At this stage, the spatial mover 11 and the pick-and-place claw 12 of the mouth support angle placement device 30 function to accurately place the support angle 70 at the mouth of the carton 60. This process is also carried out with the assistance of the limiting component 13 to ensure the accurate placement of the support angle 70.

[0126] In steps S5 and S7, after the support angle 70 is placed, the limiting component 13 releases the restriction on the carton 60, and the carton 60 moves to the next process under the transferor 40 (conveyor line).

[0127] S8. Sealing: After placing the support corner 70, seal the carton 60.

[0128] In steps S5 and S7 above, before the picking claw picks up the support angle 70, the support angle 70 is formed by the support angle forming device 50. The forming of the support angle 70 includes the following steps:

[0129] D1. The material handling robot 52 removes the cardboard from the loading table 51.

[0130] D2. The picking robot inserts the cardboard into the limiting groove 534 between the forming mold 53 and the limiting block 533, and then the cardboard is fixed by the negative pressure generated by the negative pressure adsorption hole 532. The picking robot then releases the cardboard. In this embodiment, the cardboard is in a horizontal state at this time.

[0131] D3. The forming rotator drives the forming mold 53 to rotate. The direction of rotation is to make the cardboard move closer to the bending pusher 55. During the rotation process, the bending pusher 55 restricts the cardboard from rotating with the forming mold 53. As a result, after the edge of the forming mold 53 crosses the elastic bending pusher 55, the direction of the free end of the cardboard changes.

[0132] D4. Start the bending pusher 54, which drives the bending pusher 55 to move the cardboard toward the forming surface of the forming mold 53 to complete the folding of the cardboard. After the folding is completed, the bending pusher 54 returns to its original state.

[0133] D5. The forming rotator continues to rotate to form another fold in the same way as steps D3-D4, until the cardboard forms a triangle, completing the production of the triangular support angle 70.

[0134] The picking claw moves to the position of the molding mold 53 under the drive of the space mover 11, and grabs the support corner 70 on the molding mold 53. Then, under the drive of the space mover 11, it removes the support corner 70 from the molding mold 53.

[0135] In this embodiment, mosquito coil tubes 80 are individually packaged using a melt-cutting die, then heat-shrinked. After heat shrinking, they are stacked using a stacking machine, and the stacked packaging bags are pushed into a carton 60 for packaging. The setup of the bottom support corner placement device 10, the boxing device 20, the mouth support corner placement device 30, the transferor 40, and the support corner forming device 50 enables automated boxing of mosquito coil tubes 80 that need to be transferred to the support corner 70. The entire process realizes the on-the-spot production and use of the support corner 70, the automatic placement of the support corner 70, and the automatic boxing of the mosquito coil tubes 80, greatly reducing labor intensity and improving boxing efficiency. In addition, the use of a mechanically automated boxing method can ensure the consistency of the boxing quality of all products after the production line is debugged.

[0136] The above descriptions are merely embodiments of the present invention, and common knowledge such as specific technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solutions of the present invention, and these should also be considered within the scope of protection of the present invention. These modifications and improvements will not affect the effectiveness of the implementation of the present invention or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A packaging device for automatically changing a melting and cutting die, comprising an upper film conveying assembly, a lower film conveying assembly, a lifting platform, and a melting and cutting die, wherein the melting and cutting die is located above the lifting platform, and both the upper film conveying assembly and the lower film conveying assembly include an unwinding roller and a rewinding roller, characterized in that: The number of melting and cutting dies is multiple, and a fixed track is also included, along which all melting and cutting dies can move; the track is a straight track, and a linear driver is also included to drive the melting and cutting dies to move along the straight track; or the track is a circular track, and a circular driver is also included to drive the melting and cutting dies to move along the circular track. It also includes an output line, which comprises at least two conveyor bodies with a lifting platform located between adjacent conveyor bodies; it also includes a heat shrink machine, a stacking machine, and a packing device arranged in sequence, with the heat shrink machine located at the output end of the output line and used to heat shrink the packaging bags; it also includes a continuous conveyor line that passes through the heat shrink machine and the stacking machine in sequence, with the continuous conveyor line sending the heat-shrinked packaging bags to the stacking machine, which is used to stack the packaging bags and place them back on the continuous conveyor line; and the packing device is used to push the stacked packaging bags into cartons. The packing device includes a material placement platform, a pusher, a push plate, a packing table, and a limiting mechanism. The material placement platform is located at the output end of the conveyor line. The pusher is fixedly installed on the frame. The push plate is fixed at the output end of the pusher. The limiting mechanism is used to limit the horizontal position of the carton on the packing table. The packing table is located on the side of the push plate in the direction of movement. The packing platform is provided with a clearance area. The limiting mechanism includes a side limiting component and a bottom limiting component. The side limiting component includes a left side limiting component and a right side limiting component. The side limiting component is located in the clearance area of ​​the packing platform. The left side limiting component and the right side limiting component both include a side limiting baffle and a limiting baffle lifter that drives the side limiting baffle to rise and fall. The left side limiting component and the right side limiting component are both fixedly installed on a dual-output linear module. The dual-output linear module is used to drive the left side limiting component and the right side limiting component to move closer to or further away from each other. The bottom limiting component includes a bottom limiting plate and a fixedly installed translation driver. The bottom limiting plate is fixed to the output end of the translation driver. The translation driver is used to drive the bottom limiting plate closer to or further away from the bottom of the carton. The moving direction of the bottom limiting plate is parallel to the pushing direction of the push plate. A bottom suction cup is installed on the bottom limiting plate, and a lower cover plate clearance area is set on the packing platform. The lower cover plate clearance area is located in the moving direction of the bottom limiting plate. The packing device also includes a fixed guide plate and an lifting assembly. The guide plate extends above the lower cover plate clearance area. The lifting assembly is located above the guide plate and includes an lifting plate and a lifting plate lifter that drives the lifting plate to rise and fall. It also includes a bottom support corner placement device, a mouth support corner placement device, and a transferor. The bottom support corner placement device is used to place the support corner into the bottom of the carton, and the mouth support corner placement device is used to place the support corner into the mouth of the carton. There are transferors between the bottom support corner placement device and the packing table, and between the packing table and the mouth support corner placement device. Both the bottom support corner placement device and the mouth support corner placement device include a space mover, a pick-and-place claw installed at the output end of the space mover, and a limiting component for restricting the movement of the carton. It also includes a support corner forming device, which includes a forming rotator, a forming mold, a bending pusher and a bending pusher. The forming rotator is used to drive the forming mold to rotate. The cross-section of the forming mold is an equilateral triangle. The forming mold is provided with negative pressure adsorption holes. The bending pusher is located below the forming mold and is located on the side of the central axis of the forming mold. The bending pusher is used to push the bending pusher to move closer to the forming mold to bend the cardboard.

2. The packaging device for automatically changing the melting and cutting die according to claim 1, characterized in that: It also includes a support frame for mounting all the melting and cutting dies, a fixedly mounted rack, the support frame being able to move along the track, a linear drive fixed on the support frame, the linear drive including a rotary motor and an output gear, the output gear meshing with the rack, the length direction of the rack being parallel to the track.

3. The packaging device for automatically changing the melting and cutting die according to claim 1, characterized in that: It also includes a support frame for mounting all the melting and cutting dies, which can move along the track. A large gear is fixed on the support frame and is coaxial with the track. A circumferential drive is fixedly installed. The circumferential drive includes a rotary motor and an output pinion, which meshes with the large gear.

4. The packaging device for automatically changing the melting and cutting die according to claim 1, characterized in that: The melting and cutting die includes a lifting frame and a melting and cutting die body. The lifting frame is used to drive the melting and cutting die body to rise and fall. An elastic pressure plate is installed on the lifting frame. The elastic extension and contraction direction of the elastic pressure plate is vertical. The elastic pressure plate is located at the feeding end of the upper film conveying assembly.

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