Automatic edge folding and heat sealing integrated equipment for bubble bag and using method of automatic edge folding and heat sealing integrated equipment

Abstract

The invention provides bubble bag automatic edge folding and heat sealing integrated equipment and a using method thereof, and belongs to the technical field of edge folding and heat sealing integrated equipment.The bubble bag automatic edge folding and heat sealing integrated equipment comprises an input mechanism; the edge folding mechanism comprises a supporting frame, a first supporting plate, a first U-shaped edge folding plate, a U-shaped built-in plate, a second U-shaped edge folding plate, a U-shaped connecting plate, a mounting hole, a heat sealing assembly, an air pump and a second support. An edge folding guide channel, a hot air pre-fixing unit and a final heat sealing mechanism are integrated on a continuous transmission line, so that an air bubble film can be immediately preheated and fixed without being transferred after edge folding and forming, and final heat sealing is completed; according to the seamless connection process, edgefold springback, displacement and deformation caused by semi-finished product carrying and waiting in a traditional process are fundamentally avoided, edgefold uniformity and edge sealing alignment accuracy are ensured, and the appearance quality and sealing reliability of products are remarkably improved.

Description

Technical Field

[0001] This invention belongs to the technical field of integrated edge folding and heat sealing equipment, specifically relating to an integrated automatic edge folding and heat sealing equipment for bubble bags and its usage method. Background Technology

[0002] Folding and heat sealing are two crucial steps in the bubble wrap manufacturing process, directly determining the bag's sealing performance, strength, and appearance. The folding process is typically completed using a series of precision guide rollers and folders, folding and flattening the two edges of the flat bubble wrap to form a neat double or multi-layered edge structure. This not only eliminates burrs and enhances the tear resistance of the bag edges but also provides a smooth overlap surface for subsequent heat sealing. Heat sealing occurs at a specific location after folding, using heating elements (such as hot knives, heat sealing strips, or pulsed heating elements) to apply specific temperature and pressure to the stacked multi-layered bubble wrap. This causes the surface layers of the thermoplastic inner film, such as polyethylene (PE), to melt and fuse together, forming a strong, sealed weld after cooling. Modern automated bag-making machines integrate folding and heat sealing into continuous production lines, using photoelectric sensors for positioning and PLC control for heat sealing temperature and time to ensure precise sealing position, consistent strength, and a smooth appearance. This process is the core technology for bubble wrap to achieve moisture-proof, leak-proof, and load-bearing functions. The efficient and stable edge-folding heat-sealing system is crucial for improving production speed and product qualification rate.

[0003] In existing technologies, the folding and heat sealing of bubble bags are often treated as two independent processes. The semi-finished products after folding are prone to deformation and displacement due to springback or external force during transfer and waiting. This directly leads to uneven folding and inaccurate alignment, which in turn affects the accuracy and firmness of subsequent heat sealing, reducing the quality and pass rate of finished products. Summary of the Invention

[0004] The purpose of this invention is to provide an integrated automatic folding and heat-sealing device for bubble bags and its usage method, aiming to solve the problem that in the prior art, folding and heat-sealing of bubble bags are often treated as two independent processes. The semi-finished products after folding are prone to deformation and displacement due to springback or external force during transfer and waiting. This directly leads to uneven folding and inaccurate alignment, which in turn affects the accuracy and firmness of subsequent heat sealing, reducing the quality and pass rate of finished products.

[0005] To achieve the above objectives, the present invention provides the following technical solution: An integrated automatic edge-folding and heat-sealing device for bubble bags includes: Input mechanism; The folding mechanism includes a support frame, a first support plate, a first U-shaped folding plate, a U-shaped inner plate, a second U-shaped folding plate, a U-shaped connecting plate, mounting holes, heat sealing components, an air pump, and a second bracket. Two mounting holes are provided, and two sets of heat sealing components are provided. The support frame is located on one side of the input mechanism. The first support plate is fixedly connected to the surface of the support frame, and the U-shaped inner plate is fixedly connected to the surface of the first support plate. The first U-shaped folding plate is located on the outside of the U-shaped inner plate. The U-shaped connecting plate is fixedly connected to one end of the first U-shaped folding plate, and the second U-shaped folding plate is fixedly connected to one end of the U-shaped connecting plate. The second bracket is fixedly connected to the surface of the support frame, and the air pump is fixedly connected to the upper end of the second bracket. The two sets of heat sealing components are respectively located on both sides of the second U-shaped folding plate, and both sets of heat sealing components are connected to the second U-shaped folding plate. Each heat-sealing assembly includes a mounting hole, an air inlet plate, an air inlet, an air supply pipe, a heater, and a distribution plate. Multiple air inlets and air supply pipes are provided. The mounting hole is located on the surface of the second U-shaped flange. The air inlet plate is fixedly connected to the mounting hole. Multiple air inlets are located within the air inlet plate. Multiple air supply pipes are fixedly connected to the surface of the air inlet plate and communicate with multiple air inlets. The distribution plate is fixedly connected to the ends of the multiple air supply pipes. The heater is fixedly connected to the upper end of the distribution plate and communicates with the interior of the distribution plate. The heater is also connected to an air pump.

[0006] In a preferred embodiment of the present invention, a U-shaped gap is formed between the first U-shaped folded edge plate and the U-shaped inner plate for the bubble bag to pass through. The first U-shaped folded edge plate has a trapezoidal structure. The first U-shaped folded edge plate is connected to the wide side of the U-shaped connecting plate, and the second U-shaped folded edge plate is connected to the narrow side of the U-shaped connecting plate.

[0007] In a preferred embodiment of the present invention, a first bracket is fixedly connected to the surface of the support frame, and the first bracket is fixedly connected to two heaters.

[0008] In a preferred embodiment of the present invention, the input mechanism includes a support cabinet, side plates, a housing, input rollers, and a drive assembly. Two input rollers and two side plates are provided. The support cabinet is located on one side of the support frame. The two side plates are fixedly connected to the upper end of the support cabinet. The two input rollers are rotatably connected to the surfaces of the two side plates. A bubble bag is allowed to pass between the two input rollers. The housing is fixedly connected to the surface of one of the side plates. The drive assembly is installed inside the housing.

[0009] In a preferred embodiment of the present invention, the drive assembly includes gears, a motor bracket, and a drive motor. There are two gears, both of which are rotatably connected to the surface of a side plate. The two gears are respectively fixed to the surfaces of two input rollers. The two gearboxes mesh with each other. The surfaces of the side plates are fixedly connected between the motors. The drive motor is fixedly connected inside the motor bracket. The output end of the drive motor is fixed to the surface of one of the gears.

[0010] In a preferred embodiment of the present invention, a heat sealing mechanism is provided on one side of the folding mechanism. The heat sealing mechanism includes a base, a support, a heat sealing platform, a fixing block, a support rod, a top plate, a cylinder, and a heat sealing block. Two support rods are provided. The base is located on one side of the support frame. The support is fixedly connected to the upper end of the base. The heat sealing platform is fixedly connected to the upper end of the support. The fixing block is fixedly connected to one side of the heat sealing platform. Both support rods are fixedly connected to the upper end of the fixing block. The top plate is fixedly connected to the upper ends of the two support rods. The cylinder is fixedly connected inside the top plate. The heat sealing block is fixedly connected to the extended end of the cylinder.

[0011] As a preferred embodiment of the present invention, a heat sealing groove is provided at the upper end of the heat sealing station.

[0012] As a preferred embodiment of the present invention, a discharge plate is fixedly connected to one side of the heat sealing station.

[0013] As a preferred embodiment of the present invention, anti-slip sleeves are fixedly connected to the surfaces of both input rollers.

[0014] A method for using an integrated automatic edge-folding and heat-sealing device for bubble bags includes the following steps: S1. Install the bubble wrap roll on the unwinding frame, and guide the film through the two input rollers with anti-slip sleeves of the input mechanism; start the drive motor, and drive the two rollers to rotate synchronously in opposite directions through the gear pair, so as to draw the bubble wrap into the subsequent process at a uniform speed and stably. S2. The pulled bubble film enters the U-shaped guide gap formed by the first U-shaped folding plate and the U-shaped inner plate; under the gradual guidance of the trapezoidal cross-section structure, the two sides of the film material are continuously and gently folded upward to form a neat double-layer folding structure. S3. The membrane material that has completed the initial folding immediately enters the second U-shaped folding plate area; start the air pump and heater, and blow the heated air into the folding area in the form of hot air through the air inlet plates, air supply pipes and diverter plates on both sides to preheat and pre-fix the folding, effectively preventing rebound and deformation. S4. The preheated and fixed bubble wrap with folded edges is continuously conveyed to the heat sealing table of the heat sealing mechanism and precisely stopped at the heat sealing station by a sensor or mechanical stop. S5. Control the cylinder to drive the heat sealing block to press down, pressing the folded area tightly into the heat sealing groove of the heat sealing table; within the set temperature, pressure and time, complete the fusion and sealing of the multi-layer film material to form a firm and neat seal. S6. After heat sealing is completed, the cylinder rises and the finished bubble bag is automatically pushed or slid to the inclined unloading plate, and enters the collection box or conveyor belt along the slope to achieve continuous discharge; the equipment then enters the next working cycle.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, by integrating the folding guide channel, the hot air pre-fixing unit, and the final heat sealing mechanism onto a continuous conveyor line, the bubble film can be preheated and fixed immediately after folding without transfer and the final heat sealing can be completed. This seamless process fundamentally avoids the folding springback, displacement, and deformation caused by handling and waiting of semi-finished products in traditional processes, ensuring the neatness of the folding and the accuracy of the sealing alignment, and significantly improving the product appearance quality and sealing reliability.

[0016] 2. In this invention, the folded area is immediately preheated with controllable hot air after folding to bring the material to a suitable activation state for heat sealing. Subsequently, a precisely temperature-controlled heat-sealing block completes the final fusion under pressure. This two-stage process of "preheating + final sealing" not only improves heat sealing efficiency but also reduces thermal stress and deformation risks in the final sealing stage through preheating, ensuring uniform edge sealing strength and significantly reducing the incidence of quality defects such as incomplete sealing and weak sealing.

[0017] 3. This invention integrates traction, folding, preheating, heat sealing, and unloading functions into one unit, achieving fully automated operation through a unified transmission and control system. The modular design of the folding and heat sealing units facilitates adjustment and maintenance, while the stable traction and feeding system ensures the continuity of production rhythm. This not only significantly reduces manual intervention and process changeover time, and increases single-machine capacity, but also reduces energy consumption and scrap rate through process optimization, providing reliable technical equipment for high-quality and high-efficiency production of bubble bags. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a first-view perspective perspective view of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a second-view perspective perspective view of the present invention; Figure 4 This is a first sectional view of the present invention; Figure 5 For the present invention Figure 4 A magnified view of a section at point A in the middle; Figure 6 This is a perspective view of the folding assembly described in this invention; Figure 7 This is a second sectional view of the present invention; Figure 8 This is the third cross-sectional view of the present invention.

[0019] In the diagram: 1. Support cabinet; 101. Side plate; 102. Chassis; 103. Input roller; 2. Support frame; 201. First support plate; 202. First U-shaped folded edge plate; 2021. Second U-shaped folded edge plate; 2022. U-shaped connecting plate; 203. U-shaped built-in plate; 204. Mounting hole; 205. Air inlet plate; 206. Air inlet hole; 207. Air supply pipe; 208. Heater; 209. Diverter plate; 210. First bracket; 211. Air pump; 212. Second bracket; 3. Base; 301. Support; 302. Heat sealing table; 3021. Heat sealing groove; 303. Fixing block; 304. Support rod; 305. Top plate; 306. Cylinder; 307. Heat sealing block; 308. Unloading plate. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1 Please see Figures 1-8 The present invention provides the following technical solutions: An integrated automatic edge-folding and heat-sealing device for bubble bags includes: Input mechanism; The folding mechanism includes a support frame 2, a first support plate 201, a first U-shaped folding plate 202, a U-shaped inner plate 203, a second U-shaped folding plate 2021, a U-shaped connecting plate 2022, mounting holes 204, a heat sealing assembly, an air pump 211, and a second bracket 212. Two mounting holes 204 are provided, and two sets of heat sealing assemblies are provided. The support frame 2 is located on one side of the input mechanism. The first support plate 201 is fixedly connected to the surface of the support frame 2, and the U-shaped inner plate 203 is fixedly connected to the surface of the first support plate 201. On the surface, a first U-shaped folded edge plate 202 is disposed on the outside of the U-shaped inner plate 203, a U-shaped connecting plate 2022 is fixedly connected to one end of the first U-shaped folded edge plate 202, a second U-shaped folded edge plate 2021 is fixedly connected to one end of the U-shaped connecting plate 2022, a second bracket 212 is fixedly connected to the surface of the support frame 2, an air pump 211 is fixedly connected to the upper end of the second bracket 212, and two sets of heat sealing components are respectively disposed on both sides of the second U-shaped folded edge plate 2021, and both sets of heat sealing components are connected to the second U-shaped folded edge plate 2021; Each heat-sealing assembly includes a mounting hole 204, an air inlet plate 205, an air inlet 206, an air supply pipe 207, a heater 208, and a flow divider 209. Multiple air inlets 206 and multiple air supply pipes 207 are provided. The mounting hole 204 is opened on the surface of the second U-shaped folded edge plate 2021. The air inlet plate 205 is fixedly connected to the mounting hole 204. Multiple air inlets 206 are opened within the air inlet plate 205. Multiple air supply pipes 207 are fixedly connected to the surface of the air inlet plate 205 and are respectively connected to multiple air inlets 206. The flow divider 209 is fixedly connected to the ends of the multiple air supply pipes 207. The heater 208 is fixedly connected to the upper end of the flow divider 209 and is connected to the flow divider 209. The heater 208 is also connected to the air pump 211.

[0022] In a specific embodiment of the present invention, the folding and heat-sealing functions are integrated into a continuous and synchronous operation unit to solve the problems of deformation and misalignment caused by the transfer of semi-finished products in traditional sequential processing. The input mechanism is used to continuously feed in the flattened bubble wrap. The folding mechanism includes a support frame 2, a first support plate 201, a first U-shaped folding plate 202, a U-shaped inner plate 203, a second U-shaped folding plate 2021, a U-shaped connecting plate 2022, an air pump 211, and a second bracket 212. The support frame 2 is disposed on one side of the input mechanism. The first support plate 201 is fixed to the surface of the support frame 2. The U-shaped inner plate 203 is fixed to the surface of the first support plate 201, with its U-shaped opening facing the feeding direction. The first U-shaped folding plate 202 is located outside the U-shaped inner plate 203, forming a bubble wrap channel between them. One end of the U-shaped connecting plate 2022 is connected to the first U-shaped folding plate 202, and the other end is connected to the second U-shaped folding plate 2021. The second bracket 212 is fixed on the support frame 2, and the air pump 211 is installed on the upper end of the second bracket 212. Two sets of heat sealing components are respectively integrated on both sides of the second U-shaped folded plate 2021. Each set of heat sealing components includes a mounting hole 204 opened on the surface of the second U-shaped folded plate 2021, an air inlet plate 205 fixed in the mounting hole, multiple air inlets 206 opened in the air inlet plate, multiple air supply pipes 207 connected to the surface of the air inlet plate, and a flow divider plate 209 and a heater 208 fixed at the end of the air supply pipes. All air inlets 206 are connected to the corresponding air supply pipes 207, and the heater 208 is connected to the inner cavity of the flow divider plate 209 and connected to the air pump 211 through a pipeline. When the bubble film enters the area of ​​the second U-shaped folded plate immediately after being folded, the hot air generated by the heater can be blown to the folded area through this component for pre-fixation or heat sealing.

[0023] Please refer to the details. Figures 1-8 A U-shaped gap is formed between the first U-shaped folded edge plate 202 and the U-shaped inner plate 203 for the bubble bag to pass through. The first U-shaped folded edge plate 202 has a trapezoidal structure. The first U-shaped folded edge plate 202 is connected to the wide side of the U-shaped connecting plate 2022, and the second U-shaped folded edge plate 2021 is connected to the narrow side of the U-shaped connecting plate 2022.

[0024] In this embodiment, a U-shaped gap is formed between the first U-shaped folding plate 202 and the U-shaped inner plate 203, which serves as the folding and forming channel for the bubble wrap to pass through. The first U-shaped folding plate 202 is designed with a trapezoidal structure, with its wider end connected to the wide side of the U-shaped connecting plate 2022, and the second U-shaped folding plate 2021 connected to the narrow side of the U-shaped connecting plate 2022. This gradual cross-sectional design allows the bubble wrap to be guided and folded smoothly during passage, reducing resistance and wrinkles.

[0025] Please refer to the details. Figures 1-8The surface of the support frame 2 is fixedly connected to a first bracket 210, and the first bracket 210 is fixedly connected to two heaters 208.

[0026] In this embodiment, a first bracket 210 is fixedly connected to the surface of the support frame 2. The first bracket 210 is made of rigid material, and its two ends are fixedly connected to the housings or mounting bases of the two heaters 208, respectively. This structure provides additional support points for the heaters, preventing vibration or positional shift due to pipelines or their own weight during long-term operation, and ensuring the accuracy of the hot air output direction.

[0027] Please refer to the details. Figures 1-8 The input mechanism includes a support cabinet 1, a side plate 101, a housing 102, an input roller 103, and a drive assembly. There are two input rollers 103 and two side plates 101. The support cabinet 1 is located on one side of the support frame 2. The two side plates 101 are fixedly connected to the upper end of the support cabinet 1. The two input rollers 103 are rotatably connected to the surfaces of the two side plates 101. The space between the two input rollers 103 is used for the passage of bubble bags. The housing 102 is fixedly connected to the surface of one of the side plates 101. The drive assembly is installed inside the housing 102.

[0028] In this embodiment, the input mechanism includes a support cabinet 1, two side plates 101, a housing 102, two input rollers 103, and a drive assembly. The support cabinet 1 is positioned on one side of the support frame 2 as a base. The two side plates 101 are vertically fixed to the upper sides of the support cabinet 1. The two input rollers 103 are rotatably connected in parallel between the two side plates 101, and the bubble film passes through the gap between the two rollers. The housing 102 is fixed to the outer surface of one of the side plates 101, and the drive assembly is installed inside it. This structure provides a stable and controllable feeding path for the bubble film.

[0029] Please refer to the details. Figures 1-8 The drive assembly includes gears, a motor bracket, and a drive motor. There are two gears, both of which are rotatably connected to the surface of the side plate 101. The two gears are fixed to the surfaces of the two input rollers 103 respectively. The two gearboxes mesh. The surface of the side plate 101 is fixedly connected between the motors. The drive motor is fixedly connected inside the motor bracket. The output end of the drive motor is fixed to the surface of one of the gears.

[0030] In this embodiment, the drive assembly includes two gears, a motor bracket, and a drive motor. The two gears are coaxially fixed to the shaft ends of the two input rollers 103 and located outside the side plate 101. The two gears mesh with each other, ensuring that the two rollers rotate synchronously in opposite directions. The motor bracket is fixed to the surface of one of the side plates 101. The drive motor, such as a servo motor or a stepper motor, is fixed inside the motor bracket, and its output shaft is fixedly connected to the center of one of the gears via a coupling. When the drive motor starts, it drives the two input rollers 103 to rotate at the same linear speed through the gear pair, thereby stably pulling the bubble film forward.

[0031] Please refer to the details. Figures 1-8 A heat sealing mechanism is provided on one side of the folding mechanism. The heat sealing mechanism includes a base 3, a support 301, a heat sealing platform 302, a fixing block 303, a support rod 304, a top plate 305, a cylinder 306, and a heat sealing block 307. There are two support rods 304. The base 3 is located on one side of the support frame 2. The support 301 is fixedly connected to the upper end of the base 3. The heat sealing platform 302 is fixedly connected to the upper end of the support 301. The fixing block 303 is fixedly connected to one side of the heat sealing platform 302. Both support rods 304 are fixedly connected to the upper end of the fixing block 303. The top plate 305 is fixedly connected to the upper end of the two support rods 304. The cylinder 306 is fixedly connected inside the top plate 305. The heat sealing block 307 is fixedly connected to the extended end of the cylinder 306.

[0032] In this embodiment: The heat-sealing mechanism is located on one side of the folding mechanism and includes a base 3, a support 301, a heat-sealing platform 302, a fixing block 303, two support rods 304, a top plate 305, a cylinder 306, and a heat-sealing block 307. The base 3 is located on one side of the support frame 2. The support 301 is fixed to the upper end of the base 3. The heat-sealing platform 302 is fixed to the upper end of the support 301, and its surface is used to receive the bubble wrap for edge sealing. The fixing block 303 is fixed to one side of the heat-sealing platform 302. The two support rods 304 are vertically fixed to the upper end of the fixing block 303. The top plate 305 is horizontally fixed to the top of the two support rods 304. The cylinder 306 is vertically inverted and mounted at the center of the top plate 305. The heat-sealing block 307 is fixedly connected to the extended end of the piston rod of the cylinder 306 and can be vertically raised and lowered with the movement of the cylinder. After the folded and pre-fixed bubble bag is delivered to the designated position on the heat sealing table 302, the cylinder drives the heat sealing block 307 to press down, completing the final heat sealing.

[0033] Please refer to the details. Figures 1-8 A heat sealing groove 3021 is provided at the upper end of the heat sealing table 302.

[0034] In this embodiment: On the upper surface of the heat sealing table 302, corresponding to the position where the heat sealing block 307 is pressed down, one or more heat sealing grooves 3021 are provided. The cross-sectional shape of the heat sealing groove 3021 can match the working surface of the heat sealing block 307. When the heat sealing block 307 is pressed down, the edge of the bubble bag to be sealed is pressed into the heat sealing groove 3021. This helps to concentrate heat and pressure, making the multilayer film material fuse more fully, the sealing line clearer and neater, and preventing other parts of the bag from being deformed by pressure during heat sealing.

[0035] Please refer to the details. Figures 1-8 A discharge plate 308 is fixedly connected to one side of the heat sealing table 302.

[0036] In this embodiment: A discharge plate 308 is fixedly connected to one end of the heat sealing table 302. The discharge plate 308 has a smooth, inclined surface, with its upper end flush with or slightly lower than the upper surface of the heat sealing table 302. After heat sealing is completed, the finished bubble bag can be pushed or naturally slide onto the discharge plate 308 and slide along the inclined surface into the collection box or conveyor belt, realizing automatic unloading and facilitating continuous operation.

[0037] Please refer to the details. Figures 1-8 Anti-slip sleeves are fixedly connected to the surfaces of both input rollers 103.

[0038] In this embodiment, an anti-slip sleeve is fixedly fitted onto the circumferential surface of each of the two input rollers 103. The anti-slip sleeve is typically made of an elastic material with a high coefficient of friction and has a textured surface. When the bubble film passes between the two rollers, the anti-slip sleeve provides greater friction, ensuring that the film is stably and smoothly drawn into the folding mechanism without slippage, thus avoiding uneven feeding or positioning errors caused by slippage.

[0039] It should be noted that the air pump 211, cylinder 306 and heat sealing block 307 used in this solution are all existing technologies. The specific model of air pump 211, cylinder 306 and heat sealing block 307 used can be selected according to actual needs, and will not be elaborated on here.

[0040] The working principle and usage process of this invention are as follows: First, the rolled bubble film is installed on the unwinding rack and guided through the two input rollers of the input mechanism, with the anti-slip sleeve providing stable traction. The drive motor is started, driving the two input rollers to rotate synchronously in opposite directions via a gear pair, continuously and uniformly feeding the bubble film into the folding mechanism. The bubble film first enters the U-shaped gap formed by the first U-shaped folding plate and the U-shaped inner plate. Guided by the trapezoidal structure of the first U-shaped folding plate, both sides of the film are gradually and gently folded upwards, forming a preliminary fold. The film material with the preliminary fold then enters the second U-shaped folding plate area through the U-shaped connecting plate. At this time, the air pump and heater are started, and the heated air passes through the air inlet plate, air delivery pipe, and distribution plate. Hot air is blown from both sides of the second U-shaped folding plate onto the newly formed folded area to preheat and pre-fix the fold, preventing it from springing back and deforming. The pre-fixed bubble wrap with folds is then conveyed to the heat sealing table of the heat sealing mechanism and positioned. The control cylinder moves downward, driving the heat sealing block to press the folded area of ​​the bubble wrap into the heat sealing groove of the heat sealing table, completing the final heat sealing under precise temperature and pressure. After heat sealing, the cylinder rises, and the finished bubble wrap is pushed or slides naturally onto the unloading plate, entering the collection device along the slope. Throughout the process, folding and heat sealing are seamlessly connected on a continuous production line. The bubble wrap is processed from input, folding, pre-fixing to final heat sealing in one go, achieving efficient and high-precision integrated automatic production.

[0041] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An integrated automatic edge-folding and heat-sealing device for bubble wrap, characterized in that, include: Input mechanism; The folding mechanism includes a support frame (2), a first support plate (201), a first U-shaped folding plate (202), a U-shaped inner plate (203), a second U-shaped folding plate (2021), a U-shaped connecting plate (2022), mounting holes (204), a heat sealing assembly, an air pump (211), and a second bracket (212). Two mounting holes (204) are provided, and two sets of heat sealing assemblies are provided. The support frame (2) is located on one side of the input mechanism. The first support plate (201) is fixedly connected to the surface of the support frame (2), and the U-shaped inner plate (203) is fixedly connected to the first support plate (201). The surface of the first U-shaped folded edge plate (202) is located on the outside of the U-shaped inner plate (203), the U-shaped connecting plate (2022) is fixedly connected to one end of the first U-shaped folded edge plate (202), the second U-shaped folded edge plate (2021) is fixedly connected to one end of the U-shaped connecting plate (2022), the second bracket (212) is fixedly connected to the surface of the support frame (2), the air pump (211) is fixedly connected to the upper end of the second bracket (212), the two sets of heat sealing components are respectively located on both sides of the second U-shaped folded edge plate (2021), and both sets of heat sealing components are connected to the second U-shaped folded edge plate (2021); Each heat-sealing assembly includes a mounting hole (204), an air inlet plate (205), an air inlet (206), an air supply pipe (207), a heater (208), and a distributor plate (209). Multiple air inlets (206) and air supply pipes (207) are provided. The mounting hole (204) is located on the surface of the second U-shaped flange plate (2021). The air inlet plate (205) is fixedly connected to the mounting hole (204). Multiple air inlets (206) are located at the air inlet. Inside the plate (205), multiple air supply pipes (207) are fixedly connected to the surface of the air inlet plate (205), and the multiple air supply pipes (207) are respectively connected to multiple air inlets (206). The diverter plate (209) is fixedly connected to the ends of the multiple air supply pipes (207), and the heater (208) is fixedly connected to the upper end of the diverter plate (209). The heater (208) is connected to the inside of the diverter plate (209), and the heater (208) is connected to the air pump (211).

2. The automatic folding and heat-sealing integrated equipment for bubble bags according to claim 1, characterized in that: A U-shaped gap is formed between the first U-shaped folded edge plate (202) and the U-shaped inner plate (203) for the bubble bag to pass through. The first U-shaped folded edge plate (202) has a trapezoidal structure. The first U-shaped folded edge plate (202) is connected to the wide side of the U-shaped connecting plate (2022), and the second U-shaped folded edge plate (2021) is connected to the narrow side of the U-shaped connecting plate (2022).

3. The automatic folding and heat-sealing integrated equipment for bubble wrap according to claim 2, characterized in that: The surface of the support frame (2) is fixedly connected to a first bracket (210), and the first bracket (210) is fixedly connected to two heaters (208).

4. The automatic folding and heat-sealing integrated equipment for bubble wrap according to claim 3, characterized in that: The input mechanism includes a support cabinet (1), a side plate (101), a housing (102), an input roller (103), and a drive assembly. There are two input rollers (103) and two side plates (101). The support cabinet (1) is located on one side of the support frame (2). The two side plates (101) are fixedly connected to the upper end of the support cabinet (1). The two input rollers (103) are rotatably connected to the surfaces of the two side plates (101). The two input rollers (103) are used for the passage of bubble bags. The housing (102) is fixedly connected to the surface of one of the side plates (101). The drive assembly is installed inside the housing (102).

5. The automatic folding and heat-sealing integrated equipment for bubble wrap according to claim 4, characterized in that: The drive assembly includes gears, a motor bracket, and a drive motor. There are two gears, both of which are rotatably connected to the surface of the side plate (101). The two gears are respectively fixed to the surfaces of the two input rollers (103) and mesh with each other. The surface of the side plate (101) is fixedly connected between the motors. The drive motor is fixedly connected inside the motor bracket, and the output end of the drive motor is fixed to the surface of one of the gears.

6. The automatic folding and heat-sealing integrated equipment for bubble wrap according to claim 5, characterized in that: One side of the folding mechanism is provided with a heat sealing mechanism, which includes a base (3), a support (301), a heat sealing table (302), a fixing block (303), a support rod (304), a top plate (305), a cylinder (306), and a heat sealing block (307). Two support rods (304) are provided. The base (3) is located on one side of the support frame (2). The support (301) is fixedly connected to the upper end of the base (3). The heat sealing table (306)... 02) The fixed block (303) is fixedly connected to the upper end of the support (301), the fixed block (303) is fixedly connected to one side of the heat sealing table (302), the two support rods (304) are fixedly connected to the upper end of the fixed block (303), the top plate (305) is fixedly connected to the upper end of the two support rods (304), the cylinder (306) is fixedly connected inside the top plate (305), and the heat sealing block (307) is fixedly connected to the extended end of the cylinder (306).

7. The automatic folding and heat-sealing integrated equipment for bubble wrap according to claim 6, characterized in that: The upper end of the heat sealing table (302) is provided with a heat sealing groove (3021).

8. The automatic folding and heat-sealing integrated equipment for bubble wrap according to claim 7, characterized in that: A discharge plate (308) is fixedly connected to one side of the heat sealing table (302).

9. The automatic folding and heat-sealing integrated equipment for bubble wrap according to claim 8, characterized in that: Anti-slip sleeves are fixedly connected to the surfaces of both input rollers (103).

10. A method of using an integrated automatic folding and heat-sealing device for bubble bags, comprising the integrated automatic folding and heat-sealing device for bubble bags as described in any one of claims 1-9, characterized in that, Includes the following steps: S1. Install the bubble wrap roll on the unwinding frame, and guide the film through the two input rollers with anti-slip sleeves of the input mechanism; start the drive motor, and drive the two rollers to rotate synchronously in opposite directions through the gear pair, so as to draw the bubble wrap into the subsequent process at a uniform speed and stably. S2. The pulled bubble film enters the U-shaped guide gap formed by the first U-shaped folding plate and the U-shaped inner plate; under the gradual guidance of the trapezoidal cross-section structure, the two sides of the film material are continuously and gently folded upward to form a neat double-layer folding structure. S3. The membrane material that has completed the initial folding immediately enters the second U-shaped folding plate area; start the air pump and heater, and blow the heated air into the folding area in the form of hot air through the air inlet plates, air supply pipes and diverter plates on both sides to preheat and pre-fix the folding, effectively preventing rebound and deformation. S4. The preheated and fixed bubble wrap with folded edges is continuously conveyed to the heat sealing table of the heat sealing mechanism and precisely stopped at the heat sealing station by a sensor or mechanical stop. S5. Control the cylinder to drive the heat sealing block to press down, pressing the folded area tightly into the heat sealing groove of the heat sealing table; within the set temperature, pressure and time, complete the fusion and sealing of the multi-layer film material to form a firm and neat seal. S6. After heat sealing is completed, the cylinder rises and the finished bubble bag is automatically pushed or slid to the inclined unloading plate, and enters the collection box or conveyor belt along the slope to achieve continuous discharge; the equipment then enters the next working cycle.

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