Material composite processing equipment for inner-coated aluminum bowl

Abstract

The application discloses a material composite processing equipment of an inner-coated film type aluminum bowl and relates to the technical field of industrial processing. The application dynamically adjusts the oil volume in each torque converter by combining with the oil pump pipe, so that the aluminum roller and the film roller always have the basic driving force to offset most of the inertia force and static friction force during operation, thereby enabling the composite component to pull out the aluminum material and the film material stably by applying a small traction force, enabling the material belt to keep in a taut state without bearing excessive continuous pulling force, avoiding the problems that the film body is stretched, deformed, extended at the edge or locally torn due to the continuous strong traction of the traditional rigid driving structure, and improving the stability and safety of the whole composite equipment during operation.

Description

Technical Field

[0001] This invention relates to the field of industrial processing technology, and in particular to a material composite processing equipment for inner-film-coated aluminum bowls. Background Technology

[0002] Food-grade aluminum bowls are widely used in packaging bird's nest, ready-to-eat foods, and containers for high-temperature cooked foods. Because these bowls typically undergo high-temperature sterilization after production and are subjected to cooking conditions during subsequent use, high requirements are placed on the high-temperature resistance, corrosion resistance, and food safety performance of the inner wall. Most existing aluminum bowls are made by directly stamping aluminum. Under prolonged high temperatures, the inner wall of the aluminum is prone to oxidation reactions with air, water vapor, or components in the food, resulting in blackened areas or spots on the inner surface. This not only affects the overall appearance but may also contaminate the food inside, raising consumer concerns about food safety.

[0003] To reduce the problem of aluminum oxidation due to heat, some manufacturers have begun to use a coating process to form a protective layer on the surface of the aluminum to isolate it from the outside world. However, traditional coating structures mostly form a thin coating layer with poor tensile strength. Aluminum bowls need to undergo significant deformation during subsequent stamping and forming. Under stretching, the coating layer is prone to local thinning, cracking, or damage, causing local re-exposed aluminum. This results in oxidation and blackening during subsequent high-temperature sterilization and food heating, making it difficult to maintain a complete protective effect in the long term.

[0004] Meanwhile, most existing coating processing equipment uses a rigid synchronous conveying and instantaneous pressing structure when laminating film and aluminum materials. Due to the large inertial force and static friction between the aluminum roller and the film roller during the feeding process, a large continuous tensile force is often required to maintain stable feeding during the lamination process. This results in the film layer being under tension during the lamination stage. Furthermore, the film layer will be further stretched during the subsequent stamping process, which can easily lead to problems such as film layer extension deformation, edge thinning, and local detachment. Especially for high-temperature food-grade film materials, although they have a certain tensile strength, if residual tensile stress has been generated during the early lamination process, local damage is still likely to occur during subsequent stamping and high-temperature conditions.

[0005] In addition, in traditional composite equipment, the film layer and aluminum material are usually bonded together briefly at the pressure roller and then directly wound up. The adhesive layer is difficult to fully flow and cure under stable pressure, which easily forms residual stress inside the film layer. The film material will shrink during subsequent winding, resting and stamping processes, which will further lead to problems such as local wrinkling, edge lifting or poor bonding. Summary of the Invention

[0006] The purpose of this invention is to solve the problem that traditional lamination is prone to damage, and the lamination process is prone to film stretching, resulting in poor molding quality. Therefore, this invention proposes a material lamination processing device for aluminum bowls with inner film coating.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a material composite processing equipment for an inner-film-coated aluminum bowl, comprising a support frame consisting of a main frame and a vertical frame and a material conveying assembly mounted thereon, and a composite assembly for conveying the aluminum bowl and the film after they are bonded together by an adhesive applicator. The composite assembly includes a composite roller driven by a stepper motor and a conveyor belt that is bonded and pressed on it. The material conveying assembly includes multiple torque converters that respectively engage the aluminum material roller, the winding roller, and the film material roller, and the multiple torque converters drive the aluminum material roller, the winding roller, and the film material roller to rotate synchronously and flexibly eliminate tension differences through the same driver. The torque converter includes a pump wheel fixed on the housing and a turbine that rotates through it. An output shaft is fixed on the turbine. An oil pump pipe that communicates with the inside of the housing is installed on the output shaft. The oil pump pipe outputs or inputs oil into the housing to control the transmission efficiency of the turbine and the pump wheel, thereby creating power output differences among multiple torque converters.

[0008] As a further description of the above technical solution: the material conveying assembly includes a side frame fixed on one side of the main frame, and multiple torque converters are rotatably mounted on the side frame. The driver consists of a precision-controlled motor and a drive belt, which are used to synchronously control the multiple torque converters. The aluminum material roller, the winding roller and the film material roller all rotate on the main frame, and each end is fixed with a driven gear that meshes with the torque converter.

[0009] As a further description of the above technical solution: the composite component includes two shear plates rotatably mounted on one end of the composite roller, and the other end of the shear plates is rotatably connected to one end of the corresponding conveyor belt. The ends of the conveyor belts on the same side are slidably connected to a crossbeam. A pressure roller is attached to the surface of the composite roller. The composite roller, the conveyor belt, and the pressure roller are all mounted on the same side with a synchronous belt drive. The opposite surfaces of the two crossbeams are fixed with a first guide frame. The first guide frame slides through the upright frame, and a screw is threaded onto the top of the first guide frame.

[0010] As a further description of the above technical solution: the two ends of the pressure roller are rotatably mounted with slides, the slides slide horizontally on the uprights via guide rails, and are locked to the uprights by fastening screws.

[0011] As a further description of the above technical solution: a tension assembly for controlling the tension of the synchronous belt is included. The tension assembly includes a second guide frame that slides through the upright frame. A threaded cylinder is threaded through the second guide frame. Two transmission plates are movably connected to the bottom end of the second guide frame. A tension wheel frame is movably connected to the bottom end of the transmission plate via a pin. The tension wheel frame is movably connected to one end of the composite roller to control the tension of the synchronous belt when it is deflected under pressure.

[0012] As a further description of the above technical solution: an atmosphere hood is fixed to the top of the stand, and an air inlet is installed on the top of the atmosphere hood.

[0013] As a further description of the above technical solution: the torque converter includes a driving gear fixed on the output shaft, the driving gear meshing with the driven gear, a connector fixed on one side of the housing, and a transmission wheel cooperating with the drive belt installed through the connector, a guide wheel being provided between the pump wheel and the turbine, the guide wheel rotating in a sealed manner between the pump wheel and the output shaft, and the end of the guide wheel being fixed on the main frame.

[0014] As a further description of the above technical solution: the coating device includes a coating roller located on one side of the composite roller and coating the surface of the aluminum material with adhesive, and a scraping component for scraping and controlling the thickness of the adhesive on the surface of the coating roller is fixed on one side of the coating roller.

[0015] As a further description of the above technical solution: the coating roller includes a roller body and synchronous discs fixed at both ends thereon, the synchronous discs are attached to the two end faces of the composite roller, and a storage shell for holding glue is provided at the bottom of the roller body.

[0016] As a further description of the above technical solution: the scraping assembly includes a support shaft fixed to the inner wall of the main frame, and a connecting lug is fixed on the support shaft. A telescopic frame is slidably arranged on the support shaft. A mounting base and a scraper fixed on the mounting base are fixed on the telescopic frame. An electric telescopic rod for driving the telescopic frame to deflect is movably connected to the connecting lug via a pin.

[0017] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. This invention uses multiple torque converters to drive the aluminum material roller, film material roller, and take-up roller respectively, and dynamically adjusts the amount of oil inside each torque converter in conjunction with the oil pump pipe. This ensures that the aluminum material roller and film material roller always have a basic driving force to counteract most of their inertial force and static friction during operation. As a result, the composite component only needs to apply a small traction force to pull the aluminum material and film material to be stably discharged. This keeps the material strip taut without bearing excessive continuous tension, avoiding the problems of film stretching deformation, edge extension, or local tearing caused by continuous strong traction in traditional rigid drive structures. At the same time, since the torque converter uses oil to transmit power, in case of abnormal winding, blockage, or local jamming, the power can be flexibly interrupted by the slippage of the oil, avoiding the direct breakage of the film material by the hard connection structure or the sudden change of force in the composite area, thus improving the stability and safety of the entire composite equipment during operation.

[0018] 2. By forming a long arc-shaped covering and holding structure through the composite roller and the conveyor roller belt, the aluminum material and the film material do not separate instantly after lamination, but maintain a static holding state continuously in a long arc trajectory. The adhesive layer can gradually flow and spread evenly during continuous pressure. At the same time, since the film material is located outside the arc trajectory, it undergoes a slight shrinkage during transportation, which compensates for the stretching in the early transportation stage. This reduces the residual stress inside the film layer and avoids problems such as shrinkage, wrinkling, edge lifting, or local delamination in the subsequent curing stage. This allows the food-grade film to adhere more stably to the surface of the aluminum material, improving the overall flatness and adhesion.

[0019] 3. The crossbeam is raised and lowered as a whole by the first guide frame, and the shear plate provides force support to the conveyor belt. As the height of the conveyor belt changes, the length of the shear plate acting on the two sides of the conveyor belt changes synchronously. This achieves the linkage adjustment of the overall tension and holding pressure of the conveyor belt, so that different holding states can be formed between the composite roller and the conveyor belt to meet the composite requirements of aluminum materials of different thicknesses and different film materials. This avoids the problem of insufficient local holding or local indentation that is easy to occur in the traditional fixed pressure structure, and improves the uniformity of the adhesive layer pressure and the overall consistency of the composite surface. Attached Figure Description

[0020] Figure 1 A three-dimensional schematic diagram according to the present invention is shown; Figure 2 A frontal view schematic diagram according to the present invention is shown; Figure 3 A three-dimensional schematic diagram of the composite component according to the present invention is shown; Figure 4 A schematic diagram showing the disassembled state of the aluminum material roller, film material roller, and take-up roller according to the present invention is provided. Figure 5 A rear-view cross-sectional schematic diagram according to the present invention is shown; Figure 6 A perspective view of the adhesive application apparatus according to the present invention is shown; Figure 7 An exploded view of the torque converter according to the present invention is shown; Figure 8 A cross-sectional schematic diagram of the torque converter according to the present invention is shown.

[0021] Legend: 1. Support frame; 11. Main frame; 12. Vertical frame; 2. Feeding assembly; 21. Side frame; 22. Torque converter; 221. Housing; 222. Pump impeller; 223. Turbine; 224. Guide wheel; 225. Connector; 226. Drive wheel; 227. Drive gear; 228. Output shaft; 229. Pump oil pipe; 23. Driver; 24. Driven gear; 25. Aluminum material roller; 26. Take-up roller; 27. Film material roller; 3. Composite component; 31. Composite roller; 32. Shear plate; 33. Conveyor belt; 34. Crossbeam; 35. Pressure roller; 36. Synchronous belt; 37. Carriage; 38. First guide frame; 39. Screw; 4. Stepper motor; 5. Glue application device; 51. Coating roller; 511. Roller body; 512. Synchronous disc; 513. Material storage shell; 52. Glue scraper assembly; 521. Support shaft; 522. Connecting lug; 523. Electric telescopic rod; 524. Telescopic frame; 525. Mounting base; 526. Scraper; 6. Tension assembly; 61. Tension wheel frame; 62. Transmission plate; 63. Second guide frame; 64. Threaded cylinder; 7. Atmosphere hood. Detailed Implementation

[0022] 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.

[0023] like Figures 1-8 As shown, the present invention provides a material composite processing device for an inner-film-coated aluminum bowl, comprising a composite component 3 for conveying the aluminum bowl and the film after bonding them together using an adhesive applicator 5. The composite component 3 includes a composite roller 31 driven by a stepper motor 4 and a conveyor roller belt 33 for bonding and pressing the film onto it. Figure 5The composite roller 31 and the conveyor belt 33 form a large arc-shaped covering and conveying structure, which enables the coated aluminum material to maintain a continuous pressing state within a long conveying trajectory. This avoids the problem of the adhesive layer quickly detaching before it stabilizes in the traditional instantaneous pressing structure. The adhesive layer can gradually flow and form a uniform bond under stable pressure. At the same time, the film material is located outside the arc-shaped trajectory, and a small amount of shrinkage compensation is generated during the conveying process. This releases the tension of the early conveying and reduces the residual tensile stress inside the film layer, avoiding problems such as local shrinkage, edge lifting or film layer rupture during the subsequent stamping process. The composite component 3 includes two shear plates 32 rotatably mounted on one end of the composite roller 31, and the other end of the shear plates 32 is rotatably connected to one end of the corresponding conveyor belt 33. The ends of the conveyor belts 33 on the same side are slidably connected to a crossbeam 34. A pressure roller 35 is attached to the surface of the composite roller 31. The composite roller 31, the conveyor belt 33 and the pressure roller 35 are connected to a synchronous belt 36 on the same side for transmission. The opposite surfaces of the two crossbeams 34 are fixed with a first guide frame 38. The first guide frame 38 slides through the upright frame 12, and a screw 39 is threadedly engaged at the top of the first guide frame 38.

[0024] Meanwhile, the shear plate 32 and the crossbeam 34 form a variable force-bearing length structure. During the lifting and lowering of the first guide frame 38, the support length of the shear plate 32 on the conveyor roller belt 33 changes synchronously, so that the overall tension of the conveyor roller belt 33 and the composite holding force are adjusted synchronously, thereby adapting to the composite requirements of aluminum materials of different thicknesses and different film layer materials, and improving the overall flatness of the composite surface and the uniformity of the adhesive layer under pressure.

[0025] The pressure roller 35 has slides 37 rotatably mounted at both ends. The slides 37 slide horizontally on the upright frame 12 via guide rails and are locked to the upright frame 12 by fastening screws.

[0026] By adjusting the position of the slide 37 on the guide rail, the basic holding distance between the pressure roller 35 and the composite roller 31 can be quickly adjusted to adapt to aluminum materials of different thicknesses and film layer composite requirements. Fixed gear-type adjustment is formed at different positions, and combined with the arc shape of the composite roller 31, the contact points touched at different positions are different. Then, by rotating the threaded cylinder 64, its pressure can be adjusted to achieve stepless adjustment and improve the composite stability.

[0027] The tension assembly 6 includes a tension component 6 for controlling the tension of the synchronous belt 36. The tension component 6 includes a second guide frame 63 that slides through the upright frame 12. A threaded cylinder 64 is threaded through the second guide frame 63. Two transmission plates 62 are movably connected to the bottom end of the second guide frame 63. A tension wheel frame 61 is movably connected to the bottom end of the transmission plate 62 via a pin. The tension wheel frame 61 is movably connected to one end of the composite roller 31 to control the tension of the synchronous belt 36 when it is deflected under pressure.

[0028] The threaded cylinder 64 adjusts the position of the second guide frame 63, causing the transmission plate 62 to deflect the tension wheel frame 61, thereby changing the tension of the synchronous belt 36. This allows the synchronous belt 36 to generate flexible tension output during transmission, thus achieving a slight adjustment of the pressure holding force of the pressure roller 35. Compared with the traditional rigid pressing method, the pressure change is smoother. Compared with the adjustment of the slide 37 mentioned above, it achieves stepless pressure adjustment.

[0029] It also includes a support frame 1 consisting of a main frame 11 and an upright frame 12, and a material conveying assembly 2 installed on it. An atmosphere hood 7 is fixed to the top of the upright frame 12, and an air inlet is installed on the top of the atmosphere hood 7.

[0030] The atmosphere hood 7 consists of left and right sides. The front atmosphere hood 7 forms a local atmosphere retention area for the composite aluminum material and film material, so that the adhesive layer can be kept in a heated state during the transportation process, which improves the initial leveling and wetting effect of the adhesive layer. When it enters the other rear atmosphere hood 7, it is cooled and quickly solidified, so that the film layer and aluminum material form a more stable bonding state, which improves the bonding strength after subsequent static curing.

[0031] The material conveying assembly 2 includes multiple torque converters 22 that respectively mesh with the aluminum material roller 25, the take-up roller 26, and the film material roller 27. The multiple torque converters 22 drive the aluminum material roller 25, the take-up roller 26, and the film material roller 27 to rotate synchronously and flexibly eliminate tension differences through the same driver 23. The material conveying assembly 2 includes a side frame 21 fixed on one side of the main frame 11. The multiple torque converters 22 are rotatably mounted on the side frame 21. The driver 23 consists of a precision control motor and a drive belt, which is used to synchronously control the multiple torque converters 22. The aluminum material roller 25, the take-up roller 26, and the film material roller 27 all rotate on the main frame 11, and each end is fixed with a driven gear 24 that meshes with the torque converter 22.

[0032] By driving different roll structures with multiple torque converters 22, the aluminum roll 25 and the film roll 27 always have a basic driving force to counteract their own inertial force and static friction during operation. This allows the composite component 3 to stably pull the aluminum and film materials continuously out of the roll with only a small pulling force. This avoids the problem of long-term stretching of the film layer caused by traditional strong traction conveying while maintaining the tension of the material strip. It also reduces the film layer stretching deformation and edge thinning. At the same time, since the torque converter 22 adopts hydraulic flexible transmission, when the winding resistance suddenly increases or there is local jamming, the power can be interrupted by hydraulic slippage. This avoids the problem of the traditional rigid transmission structure directly breaking the film layer or causing sudden stress changes in the composite area, thus improving the safety of equipment operation and the stability of film layer composite.

[0033] The torque converter 22 includes a pump wheel 222 fixed on the housing 221 and a turbine 223 that rotates through it. An output shaft 228 is fixed on the turbine 223. An oil pump pipe 229 communicating with the inside of the housing 221 is installed on the output shaft 228. The oil pump pipe 229 outputs or inputs oil into the housing 221 to control the transmission efficiency between the turbine 223 and the pump wheel 222, thus creating power output differences among multiple torque converters 22.

[0034] The pump oil pipe 229 adjusts the amount of oil inside the housing 221, so that the transmission efficiency between different torque converters 22 can produce different changes. This allows for dynamic adaptation based on the changes in inertia, roll diameter, and winding resistance of different rolls during operation, ensuring that the aluminum material, film material, and winding process always maintain a flexible matching state. This avoids the problem of linear velocity imbalance that occurs after the roll diameter changes in the traditional fixed transmission ratio structure.

[0035] A drive gear 227 is fixed on the output shaft 228. The drive gear 227 meshes with the driven gear 24. A connector 225 is fixed on one side of the housing 221. A transmission wheel 226 that cooperates with the drive belt is installed through the connector 225. A guide wheel 224 is provided between the pump wheel 222 and the turbine 223. The guide wheel 224 rotates between the pump wheel 222 and the output shaft 228. The end of the guide wheel 224 is fixed on the main frame 11.

[0036] The guide wheel 224 guides the internal oil flow, enabling the oil thrown out by the pump wheel 222 to form a continuous circulating impact, improving the oil kinetic energy conversion efficiency, and enabling the torque converter 22 to still generate a high basic output torque at a low input speed. This improves the ability of the aluminum roller 25 and the film roller 27 to overcome static friction and reduces the actual traction burden of the composite component 3.

[0037] The coating device 5 includes a coating roller 51 located on one side of the composite roller 31 and coating the surface of the aluminum material with adhesive, and a scraper assembly 52 for scraping and controlling the thickness of the adhesive on the surface of the coating roller 51 is fixed on one side of the coating roller 51.

[0038] The coating roller 51 continuously and evenly applies adhesive to the surface of the aluminum material, so that the adhesive layer can stably cover the surface of the aluminum material and avoid the problem of poor film adhesion caused by local lack of adhesive. At the same time, the adhesive scraper assembly 52 controls the thickness of the adhesive on the surface of the coating roller 51, so that the thickness of the adhesive layer is consistent, reducing the problem of local adhesive buildup or insufficient adhesive in some areas, and improving the smoothness and adhesion consistency of the subsequent film layer lamination.

[0039] The coating roller 51 includes a roller body 511 and a timing disc 512 fixed at both ends. The timing disc 512 is attached to both end faces of the composite roller 31. A storage shell 513 for holding glue is provided at the bottom of the roller body 511.

[0040] The synchronous disc 512 and the edge of the composite roller 31 are synchronously bonded, enabling the coating roller 51 to maintain a stable linear speed during operation and avoiding slippage or uneven coating during the coating process. At the same time, the material storage shell 513 continuously supplies adhesive to the surface of the roller body 511, ensuring a continuous and stable coating process. The adhesive scraping assembly 52 includes a support shaft 521 fixed to the inner wall of the main frame 11, and a connecting ear 522 fixed on the support shaft 521. A telescopic frame 524 is slidably arranged on the support shaft 521. A mounting base 525 and a scraper 526 fixed on the mounting base 525 are fixed on the telescopic frame 524. An electric telescopic rod 523 that drives the telescopic frame 524 to deflect is movably connected to the connecting ear 522 via a pin.

[0041] The electric telescopic rod 523 drives the telescopic frame 524 to deflect, which enables the gap between the scraper 526 and the coating roller 51 to be quickly adjusted, thereby achieving precise control of different adhesive layer thicknesses. While meeting the food-grade film bonding strength, it avoids problems such as uneven curing or adhesive overflow caused by excessive adhesive layer thickness, thereby improving adhesive layer utilization and overall composite processing quality.

[0042] Working principle: In operation, the precision-controlled motor of the driver 23 drives the transmission wheels 226 of multiple torque converters 22 to rotate via a drive belt. The transmission wheels 226, in turn, rotate the housing 221 on the side frame 21. Simultaneously, the housing 221 rotates the pump wheel 222 on the surface of the guide wheel 224, which is fixed to the main frame 11. The output shaft 228 is rotatably mounted on the main frame 11. When the pump wheel 222 rotates, it disperses the oil in all directions through centrifugal force. The high-pressure oil ejected by the pump wheel 222 impacts the blades of the turbine 223. The fluid impact force drives the turbine 223 to rotate, converting the liquid kinetic energy back into mechanical energy. The returning oil impacts the blades of the guide wheel 224, is forced to change its flow direction, and flows back to the inner side of the pump wheel 222 at an optimal angle to provide secondary boost to the pump wheel. 222 agitates the oil to amplify torque. Turbine 223 drives drive gear 227 to rotate via output shaft 228. Drive gear 227 meshes with driven gear 24. Aluminum roller 25, film roller 27 and take-up roller 26 are driven by force. At the same time, the oil volume in the housing 221 of the torque converter 22 corresponding to the transmission of aluminum roller 25, film roller 27 and take-up roller 26 is controlled. The oil volume inside the housing 221 is finely adjusted by pumping oil out or pumping in through oil pump pipe 229 to control its transmission efficiency. This achieves low torque in the early stage of take-up roller 26 and high torque in the early stage of aluminum roller 25. In use, the oil volume gradually flows from the torque converter 22 on the side of aluminum roller 25 and film roller 27 to the torque converter 22 on the side of take-up roller 26, so that its transmission efficiency is adjusted with the change of inertia. On the aluminum roller 25 side, the driving force enables the aluminum roller 25 to overcome a large amount of static friction and inertia, so that when the composite component 3 is operating, it can pull the aluminum roller 25 to rotate within a predetermined tension range. The same applies to the film roller 27. The winding roller 26 rotates actively under the drive and is kept taut and wound under the hydraulic transmission. If it cannot be wound, the hydraulic fluid will run dry and there will be no hard connection transmission. During lamination, the laminating roller 31 is driven by the stepper motor 4 to rotate slowly. The laminating roller 31, in turn, rotates synchronously with the conveyor roller 33 and the pressure roller 35 via the synchronous belt 36. The aluminum material on the aluminum roller 25 first adheres to the surface of the laminating roller 31. Then, under the rotation of the coating roller 51, the surface is uniformly coated with adhesive. Subsequently, the film on the film roller 27 adheres to the surface of the aluminum material and comes into contact with the adhesive. The film is kept in contact with the adhesive under the pressure of the pressure roller 35. After being pressed by the pressure roller 35, the film is directly clamped by the laminating roller 31 and the conveyor roller 33. In the clamped state, the film is statically pressed while being transported. During the transport process, the aluminum material is located on the inside. The film material is located on the outside. Under the pressure of the composite roller 31 with a large arc trajectory and the conveyor belt 33, the adhesive is kept basically shaped. It then enters the conveyor belt 33 and remains straight. The film material on the outside of the arc shrinks slightly to compensate for the stretching during the discharge, so as to maintain stable bonding and avoid stretching of the film. It moves to the top and flips over. The aluminum material is directly heated on the top, while the film is bonded on the bottom to avoid direct heating. After being basically cured by the atmosphere hood 7 at the top for a certain period of time, it is rolled up. Then it is placed in the curing chamber and left to stand for 72 hours before the stamping process.

[0043] When needed, the screw 39 is rotated. When the screw 39 rotates, the height of the first guide frame 38 can be adjusted. Then, the first guide frame 38 slides on the upright frame 12 with the two crossbeams 34, so that the height of the conveyor belt 33 changes. Meanwhile, the bottom position of the two shear plates 32 supporting the conveyor belt 33 remains unchanged, so that the length of the shear plates 32 acting on both sides of the conveyor belt 33 changes, so that the overall tension changes. Under the action of gravity, the conveyor belt 33 squeezes the shear plates 32 to expand. Combined with the downward pressure of the screw 39, the pressure between the conveyor belt 33 and the composite roller 31 can be adjusted. Meanwhile, when it is necessary to adjust the pressure of the pressure roller 35, the sliding position of the slide 37 on the slide rail can be adjusted, and the slide 37 can be locked with the fastening screw. The basic position of the pressure roller 35 can be adjusted. Then, by rotating the threaded cylinder 64, the threaded cylinder 64 acts on the second guide frame 63 to slide, and through the transmission plate 62, it causes the inclination angle of the tension wheel frame 61 to change and press the synchronous belt 36 into a taut state. By controlling the position of the slide 37, the pressure can be adjusted in stages. Then, the pressure of the pressure roller 35 can be finely adjusted by the tension of the synchronous belt 36.

[0044] In summary, this invention, through a combination of flexible drive by torque converter 22, arc-bending static pressure composite, and dynamic tension adjustment, ensures that the aluminum material and food-grade film material remain in a low-tension taut state during the composite conveying process. The aluminum material roller 25 and film material roller 27, under the basic driving force of torque converter 22, can pre-counteract most of the inertial force and static friction, allowing the composite component 3 to achieve stable material output with only a small traction force. This fundamentally reduces the continuous stretching problem caused by traditional strong-pull conveying to the film layer, preventing local thinning, cracking, or damage to the food-grade film during subsequent stamping due to excessive residual tensile stress. Simultaneously, the hydraulic transmission structure can interrupt power slippage in case of jamming or abnormal winding, preventing rigid transmission from directly breaking the film layer, thus improving overall processing stability and safety.

[0045] The composite roller 31 and the conveyor belt 33 form a long arc-shaped covering and holding path, so that the film layer and aluminum material are bonded together and then kept in a static holding state. The adhesive layer can gradually flow and form a uniform wetting during the stable pressure process, while the film material is located on the outside of the arc and forms a slight shrinkage compensation, which releases the stretching generated during the conveying process. This effectively reduces the residual stress inside the film layer and avoids problems such as film shrinkage, edge lifting or local delamination during subsequent high-temperature sterilization, cooking and aluminum bowl stamping. This allows the food-grade film layer to still completely cover the inner wall surface of the aluminum bowl after the aluminum bowl is formed, achieving stable isolation between the aluminum material and the food, reducing the phenomenon of aluminum material oxidation and blackening under high temperature conditions, and improving food safety and product appearance consistency.

[0046] Furthermore, through the coordinated operation of the conveyor roller belt 33 pressing structure, the synchronous belt 36 tension adjustment structure, and the adhesive scraping assembly 52, the composite pressure, conveying tension, and adhesive layer thickness can be continuously adjusted. This not only adapts to the composite requirements of aluminum materials of different thicknesses and different film layer materials, but also ensures that the adhesive layer maintains a uniform coverage on the aluminum material surface, avoiding problems such as localized adhesive buildup, insufficient adhesive, or uneven pressing. This improves the adhesion consistency and long-term high-temperature stability between the film layer and the aluminum material, enabling the composite aluminum material to meet the requirements of food-grade containers in high-temperature sterilization, high-temperature cooking, and subsequent stamping processes.

[0047] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A material composite processing equipment for an inner-film-coated aluminum bowl, comprising a support frame (1) consisting of a main frame (11) and a vertical frame (12) and a material conveying assembly (2) mounted thereon, further comprising an adhesive applicator (5) for applying adhesive to the surface of the aluminum material, and a composite assembly (3) for conveying the aluminum material after the film is bonded together, characterized in that: The composite component (3) includes a composite roller (31) driven by a stepper motor (4) and a conveyor belt (33) pressed and adhered to it. The material conveying component (2) includes multiple torque converters (22) that respectively engage the aluminum material roller (25), the winding roller (26) and the film material roller (27). The multiple torque converters (22) drive the aluminum material roller (25), the winding roller (26) and the film material roller (27) to rotate synchronously through the same driver (23) and form tension compensation through the oil transmission difference. The torque converter (22) includes a pump wheel (222) fixed on the housing (221) and a turbine (223) that rotates through it. An output shaft (228) is fixed on the turbine (223). A pump oil pipe (229) communicating with the inside of the housing (221) is installed on the output shaft (228). The pump oil pipe (229) outputs or inputs oil into the housing (221) to control the transmission efficiency of the turbine (223) and the pump wheel (222), thus forming a power output difference of multiple torque converters (22).

2. The material composite processing equipment for the inner-film-coated aluminum bowl according to claim 1, characterized in that, The material conveying assembly (2) includes a side frame (21) fixed on one side of the main frame (11), and multiple torque converters (22) are rotatably mounted on the side frame (21). The driver (23) consists of a precision control motor and a drive belt, which are used to synchronously control multiple torque converters (22). The aluminum roller (25), the winding roller (26) and the film roller (27) all rotate on the main frame (11), and each end is fixed with a driven gear (24) that meshes with the torque converter (22).

3. The material composite processing equipment for the inner-film-coated aluminum bowl according to claim 1, characterized in that, The composite component (3) includes two shear plates (32) rotatably mounted on one end of the composite roller (31), and the other end of the shear plates (32) is rotatably connected to one end of the corresponding conveyor belt (33). The ends of the conveyor belts (33) on the same side are slidably connected to a crossbeam (34). A pressure roller (35) is attached to the surface of the composite roller (31). The composite roller (31), the pressure roller (35) and the tension wheel frame (61) are connected by a synchronous belt (36). The opposite surfaces of the two crossbeams (34) are fixed with a first guide frame (38). The first guide frame (38) slides through the upright frame (12), and the top of the first guide frame (38) is threaded with a screw (39).

4. The material composite processing equipment for the inner-film-coated aluminum bowl according to claim 3, characterized in that, The pressure roller (35) is rotatably mounted with a slide (37) at both ends. The slide (37) slides horizontally on the upright (12) via a guide rail and is locked to the upright (12) by fastening screws.

5. The material composite processing equipment for the inner-film-coated aluminum bowl according to claim 3, characterized in that, The tension assembly (6) includes a tension component (6) for controlling the tension of the synchronous belt (36). The tension component (6) includes a second guide frame (63) that slides through the upright (12). A threaded cylinder (64) is threaded through the second guide frame (63). Two transmission plates (62) are movably connected to the bottom end of the second guide frame (63). A tension wheel frame (61) is movably connected to the bottom end of the transmission plate (62) via a pin. The tension wheel frame (61) is movably connected to one end of the composite roller (31) to control the tension of the synchronous belt (36) when the tension wheel frame (61) is deflected under pressure.

6. The material composite processing equipment for the inner-film-coated aluminum bowl according to claim 1, characterized in that, An atmosphere hood (7) is fixed to the top of the stand (12), and an air inlet is installed on the top of the atmosphere hood (7).

7. The material composite processing equipment for the inner-film-coated aluminum bowl according to claim 2, characterized in that, The torque converter (22) includes a drive gear (227) fixed on the output shaft (228), which meshes with the driven gear (24). A connector (225) is fixed on one side of the housing (221), and a transmission wheel (226) that cooperates with the drive belt is installed through the connector (225). A guide wheel (224) is provided between the pump wheel (222) and the turbine (223). The guide wheel (224) rotates in a sealed manner between the pump wheel (222) and the output shaft (228). The end of the guide wheel (224) is fixed on the main frame (11).

8. The material composite processing equipment for the inner-film-coated aluminum bowl according to claim 1, characterized in that, The coating device (5) includes a coating roller (51) located on one side of the composite roller (31) and coating the surface of the aluminum material with adhesive, and a scraping assembly (52) for scraping and controlling the thickness of the adhesive on the surface of the coating roller (51) is fixed on one side of the coating roller (51).

9. The material composite processing equipment for the inner-film-coated aluminum bowl according to claim 8, characterized in that, The coating roller (51) includes a roller body (511) and a timing disc (512) fixed at both ends. The timing disc (512) is attached to both end faces of the composite roller (31). A storage shell (513) for holding glue is provided at the bottom of the roller body (511).

10. The material composite processing equipment for the inner-film-coated aluminum bowl according to claim 9, characterized in that, The scraping assembly (52) includes a support shaft (521) fixed to the inner wall of the main frame (11), and a connecting ear (522) fixed on the support shaft (521). A telescopic frame (524) is slidably arranged on the support shaft (521). A mounting base (525) and a scraper (526) fixed on the mounting base (525) are fixed on the telescopic frame (524). An electric telescopic rod (523) for driving the telescopic frame (524) to deflect is movably connected to the connecting ear (522) via a pin.

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