Paper cup production inner and outer cup integrated machine

Abstract

The application discloses a paper cup production inner-outer cup integrated machine and belongs to the technical field of paper cup gluing. The integrated machine frame is provided with the flushly arranged inner cup cylinder mold rotating disc and outer cup cylinder mold rotating disc at the middle position of the upper surface of the integrated machine frame, the folding cylinder mechanism is arranged at the outer side position of the inner cup cylinder mold rotating disc and the outer cup cylinder mold rotating disc, the inner-outer cup cylinders are folded and input to the inner cup cylinder mold rotating disc and the outer cup cylinder mold rotating disc, the gluing mechanism is arranged on the outer edge of the outer cup cylinder mold rotating disc to glue the inner wall of the outer cup cylinder, the powdered starch glue and liquid moisture are stored and transported in a branch way and mixed in real time at the end of the gluing execution, the deployment time of the starch glue is changed from preparation in advance to immediate deployment, the viscosity continuous loss problem of the glue liquid caused by waiting for use in the traditional glue supply mode is avoided, and the possibility of performance deterioration of the starch glue caused by exposure to the air environment is reduced.

Description

Technical Field

[0001] This invention relates to the field of paper cup coating technology, and more specifically, to a paper cup production machine that integrates inner and outer cups. Background Technology

[0002] As a disposable food container, the production process of paper cups generally includes multiple forming processes such as cup die-cutting, side sealing, cup bottom bonding, and cup rim rolling. In order to meet the market demand for double-layer insulated paper cups, the inner and outer cup integrated machine integrates the inner cup forming and outer cup fitting into the same production line. Through the paper feeding mechanism and forming turntable arranged symmetrically on both sides, the inner and outer cups can be folded into a cylindrical shape from both sides, and then conveyed to the gluing device and cup fitting mechanism for edge rolling and other coordinated operations. The forming of double-layer paper cups can be completed in one go. In the existing technology, the gluing device mostly adopts a rotary glue spraying component or glue-spinning head to apply glue to the inner wall of the outer cup in an atomized or dotted manner, and then the inner and outer cups are bonded and fixed by flipping or pressing.

[0003] However, for biodegradable and environmentally friendly paper cup production lines, the bonding process requires the use of biodegradable food-grade adhesives such as starch glue to replace traditional industrial adhesives. Starch glue is different from ordinary industrial adhesives; its viscosity is extremely sensitive to changes in temperature and concentration. Traditional coating equipment generally uses a pre-mixed glue supply mode, but the adhesiveness of starch glue will continuously decrease during the waiting process. To address this, Chinese utility model patent with publication number CN223902200U proposes a coating device for biodegradable paper cup sheet production. This device sets up storage chambers to store powdered starch glue and liquid water separately, and uses a cylinder to control the opening and closing of the two to achieve real-time mixing in the mixing chamber, thereby avoiding the glue from becoming ineffective due to long-term storage.

[0004] However, starch adhesive is prone to forming a skin on its surface due to contact with air during the atomization spraying process. At the same time, the high viscosity of the adhesive results in large atomized particles with large dispersion. Traditional adhesive spraying devices atomize the adhesive with compressed air and spray it onto the inner wall of the outer cup. During the flight, the adhesive is affected by airflow disturbance and its own gravity, resulting in random deviations in the landing position, making it difficult to form a continuous adhesive layer of uniform thickness around the cup wall. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of this invention is to provide a paper cup production machine that integrates inner and outer cups, aiming to solve the above-mentioned technical problems.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A paper cup production machine integrating inner and outer cups includes an integrated machine frame. An inner cup mold turntable and an outer cup mold turntable are respectively assembled at the middle position of the upper surface of the integrated machine frame. A folding mechanism is provided at the outer edge of the inner cup mold turntable and the outer cup mold turntable to fold out the inner and outer cup cylinders that are conveyed to the inner cup mold turntable and the outer cup mold turntable, respectively. A glue application mechanism is provided on the outer edge of the outer cup mold turntable to apply glue to the inner wall of the outer cup cylinder. The coating mechanism includes a storage cylinder unit for storing powdered starch glue and liquid water respectively, a fine-tuning unit is provided at the bottom of the storage cylinder unit, and a mixing unit is provided at the adjustment end of the fine-tuning unit. The mixing unit and the storage cylinder unit are connected by a retractable outer hose for conveying powdered starch adhesive and liquid water respectively. The mixing unit includes a sphere for receiving the powdered starch adhesive and liquid water and a stirring mechanism inside the mixing sphere for real-time mixing. A ring of several independent coating balls is arranged on the outer edge of the mixing sphere. The mixing sphere is obliquely extended by a fine-tuning unit to approach the inner wall of the outer cup, so that the coating balls directly contact the inner wall of the outer cup for rolling coating.

[0008] As a further aspect of the present invention: the adhesive coating mechanism includes several first servo telescopic rods vertically fixedly installed on the upper surface of the integrated machine frame at one end of the outer cup mold turntable. A platform plate is fixedly installed on the top output end of the first servo telescopic rod. A first servo motor is fixedly installed at the middle position of the upper surface of the platform plate. The storage cylinder unit includes a distributing storage cylinder fixedly installed on the bottom output end of the first servo motor. A powdered starch adhesive injection pipe is fixedly installed at one end of the distributing storage cylinder, and a liquid water injection pipe is fixedly installed at the other end. A discharge cylinder outlet is opened at the middle position of the bottom of the distributing storage cylinder.

[0009] As a further aspect of the present invention: the storage cylinder unit further includes a second servo motor fixedly installed at the middle position of the top of the storage cylinder. The output end of the second servo motor passes through the interior of the storage cylinder, and a live glue stirring frame is fixedly installed on the end of the motor. The live glue stirring frame is claw-shaped, and there is a gap between the outer edge and the inner wall of the storage cylinder. One end of the liquid water injection pipe that passes through the interior of the storage cylinder is fixedly connected to an external flexible hose.

[0010] As a further aspect of the present invention: the extended flexible tube extends out from the middle of the discharge cylinder opening through the gap between the active glue mixing frame and the inner wall of the storage cylinder; the powdered starch glue injection tube extends into the inner top of the storage cylinder; a retractable outer flexible tube is fixedly connected to the bottom of the discharge cylinder opening; one end of the extended flexible tube extending out from the middle of the discharge cylinder opening is clamped inside the retractable outer flexible tube; and there is a gap between the inner wall of the retractable outer flexible tube and the outside of the extended flexible tube to allow the powdered starch glue to pass through.

[0011] As a further aspect of the present invention: the fine-tuning unit includes two first hinge frames fixedly installed at the bottom of the storage cylinder, which are arranged parallel to each other. A second servo telescopic rod and a third servo telescopic rod are respectively hinged to the two first hinge frames. The second servo telescopic rod extends vertically downward as a whole, and a second hinge frame is fixedly installed at the middle section of the second servo telescopic rod. The third servo telescopic rod extends inclinedly towards the middle section of the second servo telescopic rod, and its extended end is hinged to the second hinge frame. A third hinge frame is hinged to the bottom extended end of the second servo telescopic rod, and a circular sleeve plate is fixedly installed through the third hinge frame.

[0012] As a further aspect of the present invention: the mixing unit includes a mixing sphere movably fitted on the inner ring of the annular sleeve plate. A feed valve is fixedly installed at the top center of the mixing sphere. A retractable outer flexible tube is fixedly connected to the feed valve to supply powdered starch adhesive into the interior of the mixing sphere. The extended flexible tube passes through the feed valve into the interior of the mixing sphere. A circular groove is formed on the outer edge of the top of the mixing sphere to movably fit with the annular sleeve plate. A spherical partition shell is fixedly connected to the bottom of the mixing sphere. The spherical partition shell divides the interior of the mixing sphere into two independent areas, upper and lower. A first reserved cavity and a second reserved cavity are formed in the independent area below the spherical partition shell of the mixing sphere.

[0013] As a further aspect of the present invention: the first reserved cavity is located at the middle position below the spherical partition shell. The stirring mechanism includes a third servo motor fixedly installed in the first reserved cavity. The output end of the third servo motor extends out of the center end of the spherical partition shell, and a water receiving sleeve is fixedly installed on the extending end. The water receiving sleeve is movably connected to the end of the extended flexible tube that penetrates the mixing ball through a sealing ring. Several stirring blades are equidistantly connected in a circular pattern on the outer edge of the water receiving sleeve. The stirring blades are arc-shaped and conform to the surface of the spherical partition shell. Each stirring blade is fixedly connected to a guide pipe that communicates with the water receiving sleeve. Several one-way spray heads are fixedly installed on each guide pipe.

[0014] As a further aspect of the present invention: the mixing unit further includes an outer glue-discharging annular cavity fixedly installed on the outer edge of the bottom of the mixing sphere. The outer glue-discharging annular cavity is an overall annular cavity, and a circular flow groove is opened at the position where the outer glue-discharging annular cavity intersects with the mixing sphere to connect the two cavities. The outer glue-discharging annular cavity protrudes outward, and several reserved spherical cavities are circumferentially opened on the outer edge of the outer glue-discharging annular cavity. Each reserved spherical cavity is movably installed with a glue-coated ball. The glue-coated ball is composed of a bead-shaped sphere and a rod penetrating the axial end of the sphere, and one end of the rod on the sphere passes through the side of the outer glue-discharging annular cavity and extends outward.

[0015] As a further aspect of the present invention: a locking mechanism is provided at the bottom center of the mixing ball, the locking mechanism including a fourth servo telescopic rod and an external traction frame fixedly installed on the output end of the fourth servo telescopic rod, a rubber pressure ring is fixedly installed on the external traction frame, the rubber pressure ring moves toward the outer glue discharge annular cavity under the tightening action of the fourth servo telescopic rod to press the rod end of each glue-coated ball protruding from the outer glue discharge annular cavity, the second reserved cavity is an annular cavity surrounding the outside of the first reserved cavity, a heating ring is fixedly installed inside the second reserved cavity, and the surface of the spherical partition shell is provided with a thermally conductive coating.

[0016] As a further aspect of the present invention: the folding mechanism includes a servo conveyor frame fixedly installed on the frame of the integrated machine. A cup paper placement rack is fixedly installed on the outer end of the servo conveyor frame for placing cup paper on the servo conveyor frame. Limiting pressure strips are installed on the servo conveyor frame along the conveying path to ensure smooth conveying of cup paper. A servo cylinder frame is fixedly installed at the middle end of the servo conveyor frame. A floating pressure head is fixedly installed on the servo cylinder frame. A cup cylinder bearing mold head is fixedly installed at the bottom middle position of the servo cylinder frame to receive cup paper. A servo paper holder is fixedly installed on the outer side of the cup cylinder bearing mold head to wrap the cup paper around the cup cylinder bearing mold head and cooperate with the floating pressure head to press down to fold out the paper tube. A cup body transition support is fixedly installed at the conveying end of the servo conveyor frame to transfer the folded paper tube to the inner cup cylinder mold turntable and the outer cup cylinder mold turntable.

[0017] Compared with the prior art, the technical solution provided by the present invention has at least the following beneficial effects: This solution stores and transports powdered starch adhesive and liquid water separately, mixing them instantly at the end of the coating process. This changes the timing of starch adhesive preparation from pre-preparation to immediate preparation before coating, avoiding the continuous viscosity loss of adhesive liquid due to waiting for use in traditional supply methods. At the same time, the mixing sphere integrates a stirring mechanism and a spraying structure, allowing liquid water to be evenly incorporated into the powdered starch adhesive during the stirring process via spraying. Compared to the structure of external mixing before delivery to the coating end, this solution can complete the thorough mixing before the material reaches the coating sphere and be used directly, shortening the residence time of fresh adhesive liquid from mixing to coating, thereby reducing the possibility of performance degradation of starch adhesive due to exposure to the air environment.

[0018] The adhesive rollers transfer fresh adhesive directly to the inner wall of the outer cup via rolling contact, eliminating the intermediate step of the adhesive flying through the air. This ensures that the adhesive is not disturbed by airflow or sprayed over long distances before being coated, which helps to form a relatively uniform and continuous adhesive layer around the cup wall, further ensuring the consistency of the coating quality. Attached Figure Description

[0019] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a front view of the entire invention; Figure 3 This is a partial structural schematic diagram of the folding cylinder mechanism of the present invention; Figure 4 This is a partial structural schematic diagram of the adhesive coating mechanism of the present invention; Figure 5 This is a schematic diagram of the overall structure of the storage cylinder unit of the present invention; Figure 6 This is a schematic diagram of the structure of the storage cylinder of the present invention in a semi-sectional state; Figure 7 This is a schematic diagram of the structure of the fine-tuning unit of the present invention; Figure 8 This is a schematic diagram of the structure of the mixing unit of the present invention; Figure 9 This is a schematic diagram of the internal structure of the mixed-rubber sphere of the present invention; Figure 10 This is a schematic diagram of the structure of the mixed-rubber sphere in a half-section state according to the present invention; Figure 11 This is a schematic diagram of the stirring mechanism of the present invention; Figure 12 This is a schematic diagram of the locking mechanism of the present invention. Attached Figure

[0021] 1. Integrated machine frame; 2. Inner cup mold turntable; 3. Outer cup mold turntable; 4. Folding mechanism; 41. Servo conveyor frame; 42. Cup paper placement rack; 43. Limiting pressure strip; 44. Servo cylinder frame; 45. Floating pressure head; 46. Cup cylinder bearing die head; 47. Servo paper holder; 48. Cup body transition support; 5. Glue application mechanism; 51. First servo telescopic rod; 52. Platform structure; 53. First servo motor; 54. Storage cylinder unit; 541. Sub-storage cylinder; 542. Second servo motor; 543. Active glue mixing rack; 544. Discharge cylinder outlet; 545. Powdered starch glue injection pipe; 546. Liquid water injection pipe; 547. External flexible hose; 55. Fine-tuning unit; 551. First hinge frame; 552. Second servo telescopic rod; 553. Third servo telescopic rod; 554. Second hinge frame; 555. Third hinge frame; 556. Circular sleeve plate; 56. Mixing unit; 561. Mixing sphere; 562. Feed valve port; 563. Outer discharge annular cavity; 564. Spherical partition shell; 565. Flow annular groove; 566. Reserved spherical cavity; 567. Glue-coating ball; 568. Thermally conductive coating; 569. First reserved cavity; 5610. Second reserved cavity; 6. Retractable outer flexible hose; 7. Stirring mechanism; 71. Third servo motor; 72. Water inlet sleeve; 73. Stirring blade holder; 74. Guide pipe; 75. One-way spray head; 8. Locking mechanism; 81. Fourth servo telescopic rod; 82. External traction frame; 83. Rubber pressure ring; 9. Heating ring.

[0022] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0023] The following is a detailed description of a paper cup production machine integrating inner and outer cups provided by the present invention, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; for some known technologies, those skilled in the art can also use other alternative methods to implement the invention. Furthermore, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the invention.

[0024] like Figures 1 to 12 As shown, this embodiment of the invention provides a paper cup production machine integrating inner and outer cups, including an integrated machine frame 1. An inner cup mold turntable 2 and an outer cup mold turntable 3 are respectively assembled at the middle position of the upper surface of the integrated machine frame 1. A folding mechanism 4 is provided at the outer edge of the inner cup mold turntable 2 and the outer cup mold turntable 3 to fold out the inner and outer cup cylinders that are conveyed to the inner cup mold turntable 2 and the outer cup mold turntable 3 respectively. A glue application mechanism 5 is arranged on the outer edge of the outer cup mold turntable 3 to apply glue to the inner wall of the outer cup cylinder. The coating mechanism 5 includes a storage cylinder unit 54 for storing powdered starch glue and liquid water respectively. A fine-tuning unit 55 is provided at the bottom of the storage cylinder unit 54, and a mixing unit 56 is provided at the adjustment end of the fine-tuning unit 55. The mixing unit 56 and the storage cylinder unit 54 are connected by a retractable outer hose 6 for conveying powdered starch adhesive and liquid water respectively. The mixing unit 56 includes a mixing ball 561 for receiving the powdered starch adhesive and liquid water and a stirring mechanism 7 located inside the mixing ball 561 for real-time mixing. A ring of several independent coating balls 567 are arranged on the outer edge of the mixing ball 561. The mixing ball 561 is obliquely extended by the fine adjustment unit 55 to approach the inner wall of the outer cup, so that the coating balls 567 directly contact the inner wall of the outer cup for rolling coating.

[0025] To address the problems in existing technologies, such as the continuous loss of adhesive viscosity due to pre-mixing of powdered starch adhesive and liquid water while waiting for use, and the surface skinning, coarse atomized particles, random deviations in landing position, and difficulty in forming a uniform and continuous adhesive layer around the cup wall caused by excessive contact between the adhesive and air during atomization spraying, the above-mentioned technical solution is adopted. The above-mentioned technical solution mainly consists of an integrated machine frame 1, an inner cup mold turntable 2, an outer cup mold turntable 3, a folding mechanism 4, an adhesive application mechanism 5, a material storage cylinder unit 54, a fine-tuning unit 55, an adhesive mixing unit 56, a retractable outer cover hose 6, an adhesive mixing ball 561, a stirring mechanism 7, and an adhesive application roller 567.

[0026] The integrated frame 1 serves as the supporting foundation for the entire machine. At the center of its upper surface, the inner cup mold turntable 2 and the outer cup mold turntable 3 are assembled flush. Both are intermittently rotating disc-shaped load-bearing components. Multiple mold stations are evenly arranged on the outer edge to receive and drive the cup cylinders to rotate sequentially to each processing station. The whole is a conventional modular component in the existing technology. Furthermore, a set of folding mechanism 4 is set on the outer side of the inner cup mold turntable 2 and the outer cup mold turntable 3, which is used to fold the flat cup paper into a cylindrical structure and transport it to the corresponding turntable. The outer edge of the outer cup mold turntable 3 is equipped with a glue application mechanism 5, which is used to apply glue to the inner wall of the outer cup cylinder.

[0027] The adhesive application mechanism 5 includes a storage cylinder unit 54, a fine-tuning unit 55, and a mixing unit 56. The storage cylinder unit 54 is used to pre-store powdered starch adhesive raw material and liquid water raw material, which are kept separate before the adhesive application operation. The bottom of the storage cylinder unit 54 is provided with a fine-tuning unit 55, which is a multi-degree-of-freedom adjustment end. One end is fixedly connected to the bottom of the storage cylinder unit 54, and the adjustment end is connected to the mixing unit 56. It is used to drive the mixing unit 56 to move and adjust its position in space, so that the adhesive application end can fit against the inner wall surface of the outer cup cylinder.

[0028] The mixing unit 56 is located at the adjustment end of the fine-tuning unit 55 and is connected to the storage cylinder unit 54 via a retractable outer cover hose 6. This hose is a flexible tubular channel with telescopic deformation capability in the prior art, used to synchronously transport powdered starch adhesive into the mixing unit 56. The mixing unit 56 includes a mixing sphere 561, a stirring mechanism 7, and a coating ball 567. The mixing sphere 561 is a shell structure with an internal spherical cavity, used to receive powdered starch adhesive and liquid water for immediate mixing. The stirring mechanism 7 is a power-driven stirring end for water supply. When the powdered starch adhesive is fed into the spherical cavity of the mixing sphere 561, water can be sprayed and stirred simultaneously, generating a fresh starch adhesive solution with suitable viscosity and fluidity just before it is applied to the inner wall of the outer cup. A ring of independent adhesive-coating balls 567 is provided on the outer edge of the mixing sphere 561. Each adhesive-coating ball 567 is a freely rolling spherical structure. Part of its surface is exposed outside the mixing sphere 561, while the rest is located inside the cavity reserved on the outer edge of the mixing sphere 561 and keeps in contact with the fresh starch adhesive liquid inside. The overall posture of the mixing unit 56 is adjusted by the fine-tuning unit 55, so that the mixing sphere 561 extends obliquely. The exposed surface of the adhesive-coating ball 567 directly contacts the inner wall of the outer cup. As the outer cup mold turntable 3 rotates, the outer cup moves relative to the adhesive-coating ball 567. The adhesive-coating ball 567 rolls, and the fresh starch adhesive liquid adhering to its surface is continuously and evenly transferred and coated onto the inner wall surface of the outer cup, forming a continuous adhesive layer with uniform circumferential thickness.

[0029] Because the adhesive application roller 567 is a direct contact rolling adhesive application method, compared with the traditional atomized spraying method, it can avoid the splashing and drifting of adhesive in the air, eliminate the technical defects of random deviation of adhesive landing position and large dispersion of adhesive layer thickness. In addition, after the adhesive is carried out from the inside of the mixing ball 561 by the adhesive application roller 567, it is immediately applied to the cup wall. The contact time between the adhesive and the air is extremely short, which effectively inhibits the surface skin phenomenon and ensures the bonding strength and finished product qualification rate after the inner and outer cups are joined.

[0030] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6As shown, the glue application mechanism 5 includes several first servo telescopic rods 51 vertically fixedly installed on the upper surface of the integrated machine frame 1 at one end of the outer cup mold turntable 3. A platform plate 52 is fixedly installed on the top output end of the first servo telescopic rods 51. A first servo motor 53 is fixedly installed at the middle position of the upper surface of the platform plate 52. The storage cylinder unit 54 includes a distribution storage cylinder 541 fixedly installed on the bottom output end of the first servo motor 53. A powdered starch glue injection pipe 545 is fixedly installed at one end of the distribution storage cylinder 541, and a liquid water injection pipe 546 is fixedly installed at the other end. A discharge cylinder port 544 is opened at the middle position of the bottom of the distribution storage cylinder 541.

[0031] The configured glue-applying mechanism 5 achieves overall height adjustment and positioning through multiple first servo telescopic rods 51. Multiple first servo telescopic rods 51 are provided, and their top output ends are respectively fixedly connected to the bottom surface of the platform plate 52. The platform plate 52 is a flat load-bearing component. Through the synchronous telescopic movement of multiple first servo telescopic rods 51, the platform plate 52 can be driven to move smoothly up and down in the vertical direction, thereby realizing the downward movement of the subsequent glue-applying end. Its overall platform structure is an inherent component in the prior art, which is used to drive the glue-applying end downward, that is, to play the role of height adjustment, so as to adapt to the glue-applying operation requirements of different sized outer cups.

[0032] A first servo motor 53 is fixedly installed at the middle position of the upper surface of the platform plate 52. The output end of the first servo motor 53 extends vertically downward through the bottom surface of the platform plate 52. The storage cylinder 541 of the storage cylinder unit 54 is fixedly installed on the bottom output end of the first servo motor 53. The storage cylinder 541 can rotate around its own vertical central axis as driven by the first servo motor 53. The storage cylinder 541 is a cylindrical structure with an internal sealed cavity in the prior art. Its internal cavity is used to transfer and temporarily store powdered starch adhesive raw materials and liquid water raw materials respectively. A powdered starch adhesive injection pipe 545 is fixedly installed at one end of the storage cylinder 541. One end of the powdered starch adhesive injection pipe 545 is connected to an external powdered starch adhesive supply source, and the other end is inserted into the internal cavity of the storage cylinder 541 for conveying the powdered starch adhesive raw materials from the external supply source and injecting them into the interior of the storage cylinder 541 for temporary storage. At the other end of the storage cylinder 541, opposite to the powdered starch adhesive injection pipe 545, a liquid water injection pipe 546 is fixedly installed. One end of the liquid water injection pipe 546 is connected to an external liquid water supply source, and the other end extends into the internal cavity of the storage cylinder 541. An external flexible hose 547 is fixedly connected to the end of the liquid water injection pipe 546. A discharge port 544 is provided at the middle of the bottom of the storage cylinder 541 to discharge the powdered starch adhesive stored in the storage cylinder 541 into the subsequent retractable outer hose 6. At the same time, the storage cylinder 541 can rotate under the drive of the first servo motor 53, so that the storage cylinder 541 can actively drive the bottom mixing unit 56 to rotate when needed, instead of the mixing unit 56 only passively rotating on the inner wall of the paper tube.

[0033] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 As shown, the storage cylinder unit 54 also includes a second servo motor 542 fixedly installed at the middle position of the top of the distribution storage cylinder 541. The output end of the second servo motor 542 passes through the interior of the distribution storage cylinder 541, and a live glue stirring frame 543 is fixedly installed on the end of the passing end. The live glue stirring frame 543 is claw-shaped in general, and there is a gap between the outer edge and the inner wall of the distribution storage cylinder 541. One end of the liquid water injection pipe 546 that passes through the interior of the distribution storage cylinder 541 is fixedly connected to an external flexible hose 547.

[0034] In the configured storage cylinder unit 54, the second servo motor 542 is fixedly installed at the top middle position of the storage cylinder 541. The body of the second servo motor 542 is located above the outside of the storage cylinder 541, and its output end is vertically inserted into the internal cavity of the storage cylinder 541. A live glue stirring rack 543 is fixedly installed on the insertion end of the output end of the second servo motor 542, so that the live glue stirring rack 543 is suspended in the internal cavity of the storage cylinder 541 and rotates synchronously with the output end of the second servo motor 542. The active glue mixing rack 543 has a claw-shaped structure. Its main body extends along the axial direction of the distribution storage cylinder 541. Multiple outwardly extending claw-shaped branches are provided along the extension path. A predetermined gap is maintained between the outer edge of the active glue mixing rack 543 and the inner wall of the distribution storage cylinder 541. The existence of this gap ensures that the active glue mixing rack 543 will not contact or scratch the inner wall of the distribution storage cylinder 541 when it rotates freely inside the distribution storage cylinder 541.

[0035] One end of the liquid water injection pipe 546, which penetrates into the storage cylinder 541, is fixedly connected to an external flexible hose 547. After the insertion end of the liquid water injection pipe 546 enters the internal cavity of the storage cylinder 541 from the side wall, it is further connected to the starting end of the external flexible hose 547. The external flexible hose 547 is a tubular structure with flexible deformation capability in the prior art. One end of it is fixedly connected to the insertion end of the liquid water injection pipe 546, and the other end extends outward from the inside of the storage cylinder 541. It is used to independently transport liquid water to the mixing unit 56 downstream of the storage cylinder 541. The flexible nature of the external flexible hose 547 allows it to bend and run adaptably within the limited space inside the storage cylinder 541, avoiding the rotational movement path of the live glue mixing rack 543, and finally exits from the bottom discharge port 544 of the storage cylinder 541 to the outside, providing an independent and continuous transport channel for liquid water.

[0036] The second servo motor 542 drives the active glue mixing rack 543 to rotate continuously inside the storage cylinder 541, actively and mechanically agitating the powdered starch glue stored inside the storage cylinder 541. This overcomes the natural settling phenomenon that easily occurs when the powdered starch glue is placed in a static state due to its own gravity, keeping the powdered starch glue in a fluidized, fluffy, and uniform state inside the storage cylinder 541. Liquid water enters the storage cylinder 541 through the liquid water injection pipe 546 and does not pass through the mixing area of ​​the active glue mixing rack 543. Instead, it directly enters the extended hose 547 and is guided out of the discharge cylinder port 544 by the extended hose 547. This keeps the liquid water physically isolated from the powdered starch glue inside the storage cylinder 541, preventing premature contact between the liquid water and the powdered starch glue inside the storage cylinder 541, which could lead to localized gelatinization or clumping. This ensures that the two raw materials remain independent and pure before reaching the downstream mixing unit 56.

[0037] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 As shown, the extended hose 547 extends out from the middle of the discharge cylinder opening 544 through the gap between the active glue mixing frame 543 and the inner wall of the distribution storage cylinder 541. The powdered starch glue injection pipe 545 is inserted into the inner top of the distribution storage cylinder 541. A retractable outer cover hose 6 is fixedly connected to the bottom of the discharge cylinder opening 544. One end of the extended hose 547 that extends out from the middle of the discharge cylinder opening 544 is clamped inside the retractable outer cover hose 6, and there is a gap between the inner wall of the retractable outer cover hose 6 and the outside of the extended hose 547 to allow the powdered starch glue to pass through.

[0038] The specific routing path of the extended hose 547 inside the storage cylinder 541 is as follows: it extends vertically downward along the reserved gap between the outer edge of the live glue mixing frame 543 and the inner wall of the storage cylinder 541. This gap is the annular space between the outer end of the claw-shaped branch of the live glue mixing frame 543 and the inner peripheral wall of the storage cylinder 541. The extended hose 547 uses this gap to pass through the mixing area of ​​the live glue mixing frame 543 without interfering with the rotating live glue mixing frame 543, and finally exits from the central area of ​​the discharge cylinder port 544 opened at the middle position of the bottom of the storage cylinder 541 to the outside of the storage cylinder 541. A powdered starch adhesive injection pipe 545 is inserted into the top of the inner part of the storage cylinder 541. One end of the pipe is connected to an external powdered starch adhesive supply source, and the other end is inserted from the top wall of the storage cylinder 541 into the upper area of ​​the internal cavity. The pipe is used to transport the powdered starch adhesive raw material from the external supply source and inject it into the interior of the storage cylinder 541. The powdered starch adhesive accumulates from top to bottom inside the storage cylinder 541 under its own gravity and gradually moves downward to the discharge cylinder opening 544.

[0039] A retractable outer cover hose 6 is fixedly connected to the bottom of the discharge cylinder port 544. Its upper opening is fixedly connected to the bottom edge of the discharge cylinder port 544, forming a sealed connection with the discharge cylinder port 544. Its lower opening extends downward and connects to the feed valve port 562 of the mixing unit 56. The end part of the extended hose 547 that passes through the middle of the discharge cylinder port 544 is clamped in the internal cavity of the retractable outer cover hose 6. That is, the retractable outer cover hose 6 is sleeved on the outside of the extended hose 547. The two form a sleeve-type coaxial arrangement to ensure that the two raw materials do not come into premature contact and mix before reaching the inside of the mixing sphere 561.

[0040] One end of the retractable outer hose 6 is fixedly connected to the bottom of the discharge cylinder 544, while the other end can adaptively extend and deform as the mixing unit 56 moves. This allows the retractable outer hose 6 to automatically extend or compress as the mixing unit 56 adjusts its spatial posture with the fine-tuning unit 55, maintaining a sealed connection between the discharge cylinder 544 and the feed valve 562 of the mixing sphere 561. This ensures the continuity and sealing of the powdered starch adhesive and liquid water transport path. The annular gap between the inner wall of the retractable outer hose 6 and the outer surface of the extended hose 547 serves as an independent transport channel for the powdered starch adhesive. This, together with the internal channel of the extended hose 547 (which serves as the liquid water transport channel), forms a coaxial sleeve-type double-layer transport structure. This fully utilizes the internal space of the retractable outer hose 6 while allowing the powdered starch adhesive and liquid water to be transported in parallel and isolated within the same flexible outer hose. This avoids the problems of large space occupation, complex wiring, and tangling associated with two independent retractable transport pipes, simplifying the pipeline layout and improving the reliability and stability of the equipment.

[0041] like Figure 4 , Figure 5 , Figure 6 , Figure 7 As shown, the fine-tuning unit 55 includes two first hinge frames 551 that are fixedly installed at the bottom of the storage cylinder 541 and are arranged flatly. A second servo telescopic rod 552 and a third servo telescopic rod 553 are respectively hinged to the two first hinge frames 551. The second servo telescopic rod 552 extends vertically downwards as a whole, and a second hinge frame 554 is fixedly installed at the middle section of the second servo telescopic rod 552. The third servo telescopic rod 553 extends at an angle toward the middle section of the second servo telescopic rod 552, and its extended end is hinged to the second hinge frame 554. A third hinge frame 555 is hinged to the bottom extended end of the second servo telescopic rod 552, and a circular sleeve plate 556 is fixedly installed through the third hinge frame 555.

[0042] The fine-tuning unit 55 is fixedly installed at the bottom of the storage cylinder 541. Two first hinge frames 551 are fixedly installed at the bottom of the storage cylinder 541, arranged horizontally and protruding downwards from the bottom surface of the storage cylinder 541. Each first hinge frame 551 has a hinge hole for pivotal installation, with the axis of the hinge hole aligned. A second servo telescopic rod 552 and a third servo telescopic rod 553 are hinged to the two first hinge frames 551 respectively. Specifically, the upper end of the second servo telescopic rod 552 is pivotally mounted on one of the first hinge frames 551 and can swing relative to it around the hinge axis. The upper end of the third servo telescopic rod 553 is pivotally mounted on the other first hinge frame 551 and can swing relative to it. The main body of the second servo telescopic rod 552 extends downward vertically from its upper hinge point, allowing it to extend and retract vertically. A second hinge frame 554 is fixedly installed at the middle section of the second servo telescopic rod 552. The second hinge frame 554 is a support structure extending laterally from the main body of the second servo telescopic rod 552, and its end is provided with a hinge hole for hinge engagement with the extended end of the third servo telescopic rod 553. The main body of the third servo telescopic rod 553 extends towards the middle section of the second servo telescopic rod 552 from its upper hinge point in an inclined posture. Its lower end is a retractable movable end, which extends obliquely and points towards the location of the second hinge frame 554 at the middle section of the second servo telescopic rod 552. The extended end of the third servo telescopic rod 553 is hinged to the second hinge frame 554 via a pivot, so that the movable end of the third servo telescopic rod 553 can swing relative to the middle section of the second servo telescopic rod 552. Through the telescopic action of the third servo telescopic rod 553, its extended end can push or pull the second hinge frame 554, thereby driving the second servo telescopic rod 552 to swing around the first hinge frame 551 at its upper end to adjust the angle.

[0043] A circular ring plate 556 is fixedly installed via a third hinge frame 555. The circular ring plate 556 is a plate-shaped annular component with a central circular through hole. It is fixedly connected to the lower end of the third hinge frame 555 and is used to support and install the mixing ball 561 of the mixing unit 56. The annular inner wall of the circular ring plate 556 serves as the movable fitting support surface of the mixing ball 561. During the roller coating process, its movable annular component allows the mixing ball 561 to rotate freely.

[0044] During operation, the second servo telescopic rod 552, through its upper end hinged to the first hinge frame 551 and its lower end hinged to the third hinge frame 555, forms an active adjustment chain with vertical telescopic and back-and-forth swing capabilities. Its vertical telescopic movement can directly change the height position of the third hinge frame 555 and the annular sleeve plate 556, realizing the vertical lifting and lowering adjustment of the mixing unit 56. It can also synchronously adjust the length of the extended end to control the contact of the ball end with the inner wall of the paper cup. The third servo telescopic rod 553, through its upper end hinged to the first hinge frame 551, forms an active adjustment chain with vertical telescopic and back-and-forth swing capabilities. The hinge of 51 and the hinge of its extended end to the second hinge frame 554 constitute an inclined auxiliary adjustment chain. When the third servo telescopic rod 553 performs telescopic action, its movable end applies a push-pull force to the middle section of the second servo telescopic rod 552 through the second hinge frame 554, causing the second servo telescopic rod 552 to swing back and forth around the first hinge frame 551 at its upper end, thereby driving the third hinge frame 555 and the annular sleeve plate 556 fixed at the lower end of the second servo telescopic rod 552 to produce a displacement and angular deflection in the back and forth direction. When the second servo telescopic rod 552 and the third servo telescopic rod 553 work together, the second servo telescopic rod 552 is responsible for vertical lifting and swinging around the upper hinge point, while the third servo telescopic rod 553 is responsible for applying auxiliary push and pull to the middle section of the second servo telescopic rod 552 to achieve a greater range of front and rear attitude adjustment. Together, the two enable the annular sleeve plate 556 to have adjustable degrees of freedom in both the vertical and front and rear directions, thereby realizing the adjustment of the position and attitude of the mixing ball 561 installed on the annular sleeve plate 556 in space. This allows the glue-coating ball 567 on the outer edge of the mixing ball 561 to contact and fit with the inner wall surface of the outer cup at the optimal angle and position, ensuring that the annular sleeve plate 556 always maintains a stable fit with the mixing ball 561, and improving the adaptability of the glue-coating ball 567 to the glue-coating operation on the inner wall of the outer cup.

[0045] like Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 10As shown, the mixing unit 56 includes a mixing sphere 561 movably fitted on the inner ring of the annular sleeve plate 556. A feed valve port 562 is fixedly installed at the top center of the mixing sphere 561. A retractable outer cover hose 6 is fixedly connected to the feed valve port 562 to supply powdered starch glue into the mixing sphere 561. An extended hose 547 passes through the feed valve port 562 into the interior of the mixing sphere 561. A circular groove is formed on the outer edge of the top of the mixing sphere 561, which movably fits the annular sleeve plate 556. A spherical partition shell 564 is fixedly connected to the bottom of the mixing sphere 561. The spherical partition shell 564 divides the interior of the mixing sphere 561 into two independent areas. A first reserved cavity 569 and a second reserved cavity 5610 are formed in the independent area below the spherical partition shell 564 of the mixing sphere 561.

[0046] The mixing sphere 561 is a spherical shell structure with an internal spherical cavity. Its overall shape is spherical, and this cavity serves as a container for mixing powdered starch adhesive and liquid water. The mixing sphere 561 is movably fitted onto the inner ring of the annular sleeve 556, meaning the outer wall of the mixing sphere 561 and the inner annular wall of the annular sleeve 556 form a movable fit, allowing the mixing sphere 561 to freely deflect and rotate within the annular inner ring of the annular sleeve 556. A feed valve port 562 is fixedly installed at the top center of the mixing sphere 561. The feed valve port 562 is a tubular interface equipped with a controllable opening and closing valve, fixedly connected to the top wall of the mixing sphere 561 and communicating with the internal spherical cavity of the mixing sphere 561. The lower opening of the retractable outer cover hose 6 is fixedly connected to the feed valve port 562, so that the internal channel of the retractable outer cover hose 6 is connected to the internal spherical cavity of the mixing ball 561 through the feed valve port 562. This allows the powdered starch adhesive from the discharge port 544 of the storage cylinder 541 to be fed into the internal spherical cavity of the mixing ball 561 through the annular gap channel of the retractable outer cover hose 6 and the feed valve port 562. After the extended hose 547 passes through the middle of the discharge port 544, it continues to extend downward and passes through the feed valve port 562 into the interior of the mixing ball 561.

[0047] A circular groove is formed on the outer edge of the top of the mixing sphere 561. The groove and the circular sleeve plate 556 form a movable fitting relationship, allowing the mixing sphere 561 to adaptively adjust its posture according to the actual contact angle with the inner wall of the outer cup during the glue application process. A spherical partition shell 564 is fixedly connected to the bottom of the mixing sphere 561. The spherical partition shell 564 is a spherical partition structure, which is fixedly installed in the internal cavity of the mixing sphere 561, dividing the internal cavity of the mixing sphere 561 into two independent and sealed areas. The area above the spherical partition shell 564 is the powder glue mixing cavity of the mixing sphere 561, and the independent area below the spherical partition shell 564 is the bottom reserved installation area of ​​the mixing sphere 561. The bottom reserved installation area has a first reserved cavity 569 and a second reserved cavity 5610. The first reserved cavity 569 is located at the middle position below the spherical partition shell 564. It is a cavity located in the center of the bottom reserved area and is used to install the driving power source of the stirring mechanism 7. The second reserved cavity 5610 is a circular cavity surrounding the outside of the first reserved cavity 569. Its whole is arranged in a circular shape around the circumference of the first reserved cavity 569 and is used to install the components of the auxiliary heating function.

[0048] like Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 As shown, the first reserved cavity 569 is located at the middle position below the spherical partition shell 564. The stirring mechanism 7 includes a third servo motor 71 fixedly installed in the first reserved cavity 569. The output end of the third servo motor 71 extends out of the center end of the spherical partition shell 564, and a water receiving sleeve 72 is fixedly installed on the extending end. The water receiving sleeve 72 is movably connected to the end of the extended hose 547 that penetrates the mixing ball 561 through a sealing ring. Several stirring blades 73 are equidistantly connected in a circular pattern on the outer edge of the water receiving sleeve 72. The stirring blades 73 are arc-shaped and conform to the surface of the spherical partition shell 564. Each stirring blade 73 is fixedly connected to a guide pipe 74 that communicates with the water receiving sleeve 72. Several one-way spray heads 75 are fixedly installed on each guide pipe 74.

[0049] The first reserved cavity 569 is located in the middle position below the spherical partition shell 564, and is used to accommodate and fix the driving power source of the stirring mechanism 7. The stirring mechanism 7 includes a third servo motor 71. The body of the third servo motor 71 is fixedly installed inside the first reserved cavity 569. Its output end extends upward from the top of the third servo motor 71 and passes through the center end of the spherical partition shell 564, extending into the powder-adhesive mixing cavity above the spherical partition shell 564. A dynamic sealing structure is provided between the output end and the center through hole of the spherical partition shell 564 to ensure that the adhesive in the powder-adhesive mixing cavity will not leak into the first reserved cavity 569 through the through hole. The output end of the third servo motor 71 passes through the end of the center end of the spherical partition shell 564 and is fixedly installed with a water receiving sleeve 72. The water receiving sleeve 72 is a hollow cylindrical rotary joint component. Its bottom is fixedly connected to the output end of the third servo motor 71 and rotates synchronously with the output end of the third servo motor 71. A hollow flow channel is formed inside the water receiving sleeve 72. One end of the hollow flow channel is connected to the end of the extended hose 547 that penetrates the inside of the mixing ball 561. The upper end of the water receiving sleeve 72 is movably connected to the end of the extended hose 547 that penetrates the inside of the mixing ball 561 through a sealing ring. That is, the end of the extended hose 547 is inserted into the upper opening of the water receiving sleeve 72. The two are rotated and sealed by the sealing ring, so that when the water receiving sleeve 72 rotates with the output end of the third servo motor 71, the extended hose 547 can remain stationary. At the same time, the connection between the two is kept liquid-sealed to prevent liquid water from leaking from the connection. Specifically, it includes, but is not limited to, the sealing ring sleeve, water-proof ring and other components in the prior art. Through a sealed connection structure, liquid water transported by the internal channel of the extended hose 547 can continuously enter the hollow flow channel inside the water receiving sleeve 72. On the outer edge of the water receiving sleeve 72, several stirring blades 73 are equidistantly connected in a circular pattern. The inner end of each stirring blade 73 is fixedly connected to the outer wall of the water receiving sleeve 72, and its outer end extends radially outward. The overall shape of the stirring blade 73 is an arc-shaped plate structure that conforms to the contour of the upper surface of the spherical partition shell 564. The arc direction of the stirring blade 73 is adapted to the spherical curvature of the spherical partition shell 564. When the water receiving sleeve 72 rotates with the output end of the third servo motor 71, the multiple stirring blades 73 fixed on the outer edge of the water receiving sleeve 72 rotate synchronously around the axis of the water receiving sleeve 72, continuously mechanically stirring and mixing the powdered starch glue and liquid water that have entered the spherical cavity inside the mixing sphere 561.

[0050] Each mixing blade holder 73 is fixedly connected to a guide pipe 74 communicating with a water receiving sleeve 72. One end of the guide pipe 74 is connected to the internal hollow flow channel of the water receiving sleeve 72, and the other end extends along the surface of the mixing blade holder 73, so that liquid water in the internal hollow flow channel of the water receiving sleeve 72 can be transported to different positions on the mixing blade holder 73 through the guide pipe 74. Several one-way spray heads 75 are fixedly installed on each guide pipe 74. The one-way spray head 75 is a spray element that only allows liquid water to spray out in one direction. It is fixedly installed on the pipe wall of the guide pipe 74 and distributed at intervals along the extension direction of the guide pipe 74. Its spray outlet faces the powder-adhesive mixing area near the mixing blade holder 73. When liquid water enters the guide pipe 74 through the extended hose 547 and the internal hollow flow channel of the water receiving sleeve 72, the one-way spray head 75 sprays liquid water evenly into the powdered starch adhesive in the spherical cavity inside the mixing ball 561 during the rotation of the mixing blade holder 73.

[0051] During operation, the output end of the third servo motor 71 extends through the center of the spherical partition housing 564 and drives the water receiving sleeve 72 and the stirring blade holder 73 to rotate synchronously. The water receiving sleeve 72 is movably connected to the end of the extended hose 547 through a sealing ring, so that the liquid water can maintain a continuous seal when it is transferred from the stationary extended hose 547 to the rotating water receiving sleeve 72, effectively preventing leakage of liquid water at the rotating connection. At the same time, it allows the liquid water to smoothly enter the hollow flow channel of the water receiving sleeve 72 and be distributed to each guide pipe 74. The stirring blade holder 73 is arranged in a circumferentially equidistant pattern. Furthermore, it has an arc-shaped structure that fits the surface of the spherical partition shell 564. During the rotation and stirring process, a uniform shear gap is formed between its arc-shaped lower surface and the upper surface of the spherical partition shell 564, which prevents the powdered starch adhesive from depositing or accumulating on the surface of the spherical partition shell 564 and ensures the overall circulation of materials in the mixing chamber. During the stirring process, liquid water is transported to each stirring blade holder 73 through the guide pipe 74, and liquid water is sprayed onto the powdered starch adhesive by the one-way spray head 75 while rotating and stirring, so that the liquid water can fully contact the powdered starch adhesive and disperse quickly at the moment of injection.

[0052] like Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 10As shown, the mixing unit 56 further includes an outer glue discharge annular cavity 563 fixedly installed on the outer edge of the bottom of the mixing sphere 561. The outer glue discharge annular cavity 563 is an annular cavity in whole, and a circular flow groove 565 is opened at the position where the outer glue discharge annular cavity 563 and the mixing sphere 561 intersect to connect the two cavities. The outer glue discharge annular cavity 563 protrudes outward in whole, and several reserved spherical cavities 566 are circumferentially opened on the outer edge of the outer glue discharge annular cavity 563. Each reserved spherical cavity 566 has a glue-coated ball 567 movably installed in it. The glue-coated ball 567 is composed of a bead-shaped sphere and a rod penetrating the axial end of the sphere, and one end of the rod on the sphere passes through the side of the outer glue discharge annular cavity 563 and extends out.

[0053] The outer annular cavity 563 is fixedly installed at the bottom outer edge of the mixing sphere 561. It is a circular cavity structure. At the intersection of the outer annular cavity 563 and the mixing sphere 561, that is, at the junction of the bottom wall of the mixing sphere 561 and the top wall of the outer annular cavity 563, a flow annular groove 565 is opened. The flow annular groove 565 is an annular opening extending circumferentially. It connects the inner spherical cavity of the mixing sphere 561 with the inner annular cavity of the outer annular cavity 563. This allows the fresh starch glue solution generated by the mixing mechanism 7 to flow from the inner spherical cavity of the mixing sphere 561 into the annular cavity of the outer annular cavity 563 through the flow annular groove 565.

[0054] The outer rubber discharge annular cavity 563 protrudes radially outward from the bottom outer edge of the mixing sphere 561, meaning the outer diameter of the outer rubber discharge annular cavity 563 is larger than the outer diameter of the bottom of the mixing sphere 561. This outwardly protruding annular cavity forms a rubber storage flange structure surrounding the bottom of the mixing sphere 561. Several pre-reserved spherical cavities 566 are circumferentially formed on the outer edge of the outer rubber discharge annular cavity 563. The reserved spherical cavity 566 is a spherical recessed space opened on the outer edge wall of the outer glue-discharging annular cavity 563. The reserved spherical cavities 566 are evenly arranged along the circumference of the outer glue-discharging annular cavity 563. Each reserved spherical cavity 566 is connected to the inner annular cavity of the outer glue-discharging annular cavity 563, so that the starch glue liquid inside the outer glue-discharging annular cavity 563 can enter each reserved spherical cavity 566. A glue-coating ball 567 is movably installed in each reserved spherical cavity 566.

[0055] The glued ball bearing 567 is composed of a bead-shaped sphere and a rod penetrating the sphere's central axis. The bead-shaped sphere is a roughly spherical rolling body with a diameter that matches the inner diameter of the reserved spherical cavity 566, allowing the bead-shaped sphere to roll freely within the cavity. The rod penetrating the sphere's central axis is a long strip-shaped rod that runs along the diameter of the bead-shaped sphere through its axis. The rod is fixedly connected to the bead-shaped sphere or integrally formed. Both ends of the rod extend from the sides of the bead-shaped sphere, and one end of the rod on the bead-shaped sphere passes through the side of the outer glue-discharge annular cavity 563 and extends into the external space. When the bead-shaped ball of the glue-coated ball 567 rolls in the reserved spherical cavity 566, the spherical surface exposed at the opening of the reserved spherical cavity 566 contacts the inner wall of the outer cup and rolls under the action of contact pressure, thereby transferring the starch glue adhering to the surface of the bead-shaped ball from inside the outer glue-discharging annular cavity 563 and coating it onto the inner wall surface of the outer cup. The end of the rod that protrudes from the side of the outer glue-discharging annular cavity 563 serves as an external control interface, used to cooperate with the subsequent locking mechanism 8 to achieve locking control of the rolling state of the glue-coated ball 567.

[0056] like Figure 5 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 12 As shown, a locking mechanism 8 is provided at the bottom center of the mixing ball 561. The locking mechanism 8 includes a fourth servo telescopic rod 81 and an external traction frame 82 fixedly installed on the output end of the fourth servo telescopic rod 81. A rubber pressure ring 83 is fixedly installed on the external traction frame 82. The rubber pressure ring 83 moves toward the outer glue discharge annular cavity 563 under the tightening action of the fourth servo telescopic rod 81 to press the rod end of each glue-coated ball 567 protruding from the outer glue discharge annular cavity 563. The second reserved cavity 5610 is an annular cavity surrounding the outside of the first reserved cavity 569. A heating ring 9 is fixedly installed inside the second reserved cavity 5610. The surface of the spherical partition shell 564 is provided with a thermally conductive coating 568.

[0057] The locking mechanism 8 includes a fourth servo telescopic rod 81, an external traction frame 82, and a rubber pressure ring 83. The fourth servo telescopic rod 81 is a conventional controllable actuator with telescopic drive capability, as configured in the prior art. Its main body is fixedly installed at the bottom center of the rubber mixing sphere 561, and its output end extends downward in the vertical direction, enabling it to extend and retract under the action of a control signal. The external traction frame 82 is fixedly installed at the output end of the fourth servo telescopic rod 81, that is, the upper end of the external traction frame 82 is fixedly connected to the output end of the fourth servo telescopic rod 81, and moves with the fourth servo... The output end of the servo telescopic rod 81 moves up and down synchronously. The outer traction frame 82 is a frame-type support structure that extends radially outward. Its entire structure extends from the output end of the fourth servo telescopic rod 81 to form a ring-shaped support skeleton surrounding the output end of the fourth servo telescopic rod 81. A rubber pressure ring 83 is fixedly installed on the outer edge of the outer traction frame 82. The rubber pressure ring 83 is a circular elastic clamping component made of rubber material with predetermined elasticity and wear resistance. It has an overall ring-shaped structure and is fixedly connected to the outer edge of the outer traction frame 82, moving synchronously with the outer traction frame 82. The inner diameter of the rubber pressure ring 83 is slightly larger than the outer diameter of the outer rubber discharge annular cavity 563, so that the rubber pressure ring 83 can be fitted onto the outside of the outer rubber discharge annular cavity 563 when it moves with the outer traction frame 82.

[0058] During the actual operation, when the fourth servo telescopic rod 81 performs the tightening action, that is, when its output end retracts upward, the output end of the fourth servo telescopic rod 81 drives the outer traction frame 82 to move upward as a whole. The outer traction frame 82 further drives the rubber pressure ring 83 to move towards the outer glue discharge annular cavity 563. As the rubber pressure ring 83 continues to rise, its annular inner wall gradually approaches and contacts the rod end of each glue-coating ball 567 on the outer edge of the outer glue discharge annular cavity 563. Under the continuous tightening action of the fourth servo telescopic rod 81, the rubber pressure ring 83 applies radial clamping force to the rod end of each glue-coating ball 567. The braking force is transmitted to the bead-shaped ball of the glue-coating ball 567 through the rod end, so that the free rolling of the glue-coating ball 567 in the reserved spherical cavity 566 is suppressed and locked in the current posture, thereby stopping the glue-coating ball 567 from rotating and realizing the immediate termination of the glue coating operation. When the fourth servo telescopic rod 81 performs the relaxation action, that is, when its output end extends downward, the outer traction frame 82 and the rubber pressure ring 83 move downward simultaneously. The rubber pressure ring 83 disengages from the end of the glue-coating ball 567 rod, releasing the clamping force on the end of the rod. The glue-coating ball 567 returns to the free rolling state in the reserved spherical cavity 566, and the glue-coating operation can continue.

[0059] The second reserved cavity 5610 is an annular cavity surrounding the first reserved cavity 569. It is located in the bottom reserved installation area below the spherical partition shell 564, and is arranged in a circular shape around the circumference of the first reserved cavity 569. A heating ring 9 is fixedly installed inside the second reserved cavity 5610. The heating ring 9 is a ring-shaped electric heating element in the prior art, and its shape is adapted to the annular contour of the second reserved cavity 5610. It is fixedly installed in the inner wall of the second reserved cavity 5610. A thermally conductive coating 568 is disposed on the surface of the spherical partition shell 564. The thermally conductive coating 568 is a thin layer of high thermal conductivity material uniformly coated on the upper and lower surfaces of the spherical partition shell 564, covering the sphere. The heating ring 9 is fixedly installed in the second reserved cavity 5610 over the entire spherical area of ​​the surface-separating shell 564. The heat generated by the ring is conducted to the spherical separating shell 564 through the cavity wall of the second reserved cavity 5610, and then evenly transferred to the powder-adhesive mixing cavity above the spherical separating shell 564 through the thermally conductive coating 568 on the surface of the spherical separating shell 564. The high thermal conductivity of the thermally conductive coating 568 makes the heat distribution on the surface of the spherical separating shell 564 more uniform, avoiding local overheating or overcooling. This ensures that the powdered starch adhesive and liquid water in the spherical cavity inside the mixing sphere 561 are in a suitable temperature environment during the mixing process, ensuring that the starch adhesive solution generated by instant mixing has a stable and uniform viscosity.

[0060] like Figure 1 , Figure 2 , Figure 3 As shown, the folding mechanism 4 includes a servo conveyor frame 41 fixedly installed on the integrated machine frame 1. A cup paper placement rack 42 is fixedly installed on the outer end of the servo conveyor frame 41 for placing cup paper on the servo conveyor frame 41. A limit pressure strip 43 is installed on the servo conveyor frame 41 along the conveying path to ensure smooth conveying of cup paper. A servo cylinder frame 44 is fixedly installed at the middle end of the servo conveyor frame 41. A floating pressure head 45 is fixedly installed on the servo cylinder frame 44. A cup cylinder bearing mold head 46 is fixedly installed at the bottom middle position of the servo cylinder frame 44 to receive cup paper. A servo paper holder 47 is fixedly installed on the outer side of the cup cylinder bearing mold head 46 to wrap the cup paper around the cup cylinder bearing mold head 46 and cooperate with the floating pressure head 45 to press down to fold out the paper tube. A cup body transition support 48 is fixedly installed at the conveying end of the servo conveyor frame 41 to transfer the folded paper tube to the inner cup cylinder mold turntable 2 and the outer cup cylinder mold turntable 3.

[0061] The configured folding mechanism 4 is a forming assembly in the paper cup production machine that folds flat cup paper into a cylindrical structure. It is fixedly installed on the upper surface of the machine frame 1 and is respectively set at the outer side of the inner cup mold turntable 2 and the outer cup mold turntable 3. The two sets of folding mechanisms 4 have the same structure and working principle, and are used to form the inner cup cylinder and the outer cup cylinder respectively, and respectively transport the formed inner cup cylinder and the outer cup cylinder to the inner cup mold turntable 2 and the outer cup mold turntable 3. It is a conventional component configured on the machine in the prior art.

[0062] The servo conveyor 41 is a linear conveyor assembly driven by a servo motor. It is long and extends horizontally, with its bottom fixedly installed on the upper surface of the integrated machine frame 1. It is used to carry and convey cup paper through the various functional stations of the folding mechanism 4 along a predetermined path. At the outer end of the servo conveyor 41, i.e., at the starting end of the conveying path, a cup paper placement rack 42 is fixedly installed. The cup paper placement rack 42 is a tray-type hopper structure for stacking and storing flat cup paper to be processed. Its bottom is connected to the starting end of the servo conveyor 41. The operator places the stacked flat cup paper into the cup paper placement rack 42. The cup paper placement rack 42 separates the cup paper one by one and feeds it into the conveying surface of the servo conveyor 41 through the paper picking mechanism set at its bottom, realizing automatic paper feeding to the servo conveyor 41. All of these are existing technologies.

[0063] On the servo conveyor frame 41, a limiting strip 43 is installed along the length of its conveying path. The limiting strip 43 is a strip-shaped limiting component, which is fixedly installed above the conveying surface of the servo conveyor frame 41. It maintains a predetermined gap with the conveying surface that is adapted to the thickness of the cup paper. The limiting strip 43 extends along the conveying path and is used to apply limiting and light pressure to the two sides and the upper surface of the cup paper as it is conveyed forward with the servo conveyor frame 41, so as to prevent the cup paper from tilting, curling or shifting during the conveying process. At the middle end of the servo conveyor frame 41, that is, at the midpoint after the cup paper placement rack 42 along the conveying direction, a servo cylinder frame 44 is fixedly installed. The servo cylinder frame 44 is a portal frame-type support structure spanning above the servo conveyor frame 41. Its bottom is fixed to both sides of the servo conveyor frame 41, and its top crossbeam spans across the conveying path to support and install the actuator for the folding and forming action. A floating pressure head 45 is fixedly installed on the top crossbeam of the servo cylinder frame 44. The floating pressure head 45 is a... The punching head component driven by a cylinder and having a floating compensation function at its lower end has its cylinder body fixedly mounted on the top crossbeam of the servo cylinder frame 44. Its piston rod extends vertically downward and faces the conveying surface of the servo conveyor frame 41. The lower end of the floating punch head 45 can extend vertically downward under the drive of the cylinder to apply downward punching force to the cup paper located below it. Its floating compensation function can adaptively adjust the clamping force when contacting the cup paper to avoid crushing or poor forming caused by cup paper thickness tolerance. This is also existing technology.

[0064] At the bottom center of the servo cylinder frame 44, that is, at the conveying surface of the servo conveyor frame 41 directly below the floating pressure head 45, a cup-bearing die head 46 is fixedly installed. The cup-bearing die head 46 is a punch component with a predetermined outer contour shape. Its overall shape is cylindrical or columnar, and its outer contour matches the inner wall shape of the paper tube to be formed. The top surface of the cup-bearing die head 46 is used to receive the flat cup paper conveyed to the position above it by the servo conveyor frame 41, so that the cup paper is horizontally unfolded on the top surface of the cup-bearing die head 46. At the outer edge of the cup-bearing die head 46, that is, on the circumferential periphery of the cup-bearing die head 46, a servo paper holder 47 is fixedly installed. The servo paper holder 47 is a servo-driven openable and closable holding mechanism. It has multiple arc-shaped grippers arranged circumferentially around the cup-bearing die head 46. Each gripper can close towards the axis of the cup-bearing die head 46 or open away from the axis under servo drive. After the flat paper cup is conveyed to the top surface of the cup cylinder bearing mold 46, the grippers of the servo paper holder 47 close towards the axis of the cup cylinder bearing mold 46, wrapping the paper cup that was originally laid flat on the top surface of the cup cylinder bearing mold 46 from all sides upwards and adhering it to the outer peripheral wall of the cup cylinder bearing mold 46, so that the paper cup surrounds the outside of the cup cylinder bearing mold 46 to form a cylindrical initial shape. At the same time, the floating pressure head 45 extends downwards under the drive of the cylinder, and its lower end presses against the overlapping part of the paper cup. With the wrapping action of the servo paper holder 47, the side overlapping part of the paper cup is pressed and shaped, thereby completing the folding and forming of the paper cylinder. This is a conventional processing component and step in the existing technology of paper cylinder folding and forming.

[0065] A cup body transition support 48 is fixedly installed at the end of the servo conveyor frame 41. The cup body transition support 48 is an arc-shaped receiving component, with its starting end connected to the downstream side of the cup cylinder bearing mold head 46 and its end extending to the mold station of the inner cup cylinder mold turntable 2 or the outer cup cylinder mold turntable 3. After the folding and forming is completed, the formed paper cylinder is removed from the cup cylinder bearing mold head 46 and transferred to the cup body transition support 48. The cup body transition support 48 guides the formed paper cylinder and receives it in the corresponding mold station of the inner cup cylinder mold turntable 2 or the outer cup cylinder mold turntable 3, completing the loading of the inner or outer cup cylinder on their respective turntables, so as to enter the subsequent gluing and fitting process, which is also the existing technology.

[0066] With the above configuration, the servo conveyor 41 guides the cup paper from the cup paper placement rack 42 through the limiting pressure strip 43 to the cup cylinder bearing mold head 46. The servo paper holder 47 wraps the cup paper around the outside of the cup cylinder bearing mold head 46. The floating pressure head 45 cooperates to press down and complete the folding and forming of the paper cylinder. The formed paper cylinder is transferred from the cup body transition support 48 to the inner cup cylinder mold turntable 2 or the outer cup cylinder mold turntable 3.

[0067] The workflow provided by this invention is as follows: First, two sets of folding mechanisms 4, located on both sides of the upper surface of the integrated machine frame 1, simultaneously perform the folding and forming operations of the inner and outer cup cylinders. Taking one set of folding mechanisms 4 as an example, the servo conveyor frame 41 starts to operate, and the cup paper placement rack 42 separates the stacked flat cup papers one by one and feeds them into the conveying surface of the servo conveyor frame 41 through the paper picking mechanism at its bottom. Driven by the servo conveyor frame 41, the cup paper moves forward along the conveying path. During the movement, the limiting pressure strip 43, which is fixedly installed above the conveying surface of the servo conveyor frame 41, applies limiting and light pressure to the two sides and the upper surface of the cup paper. The cup paper is precisely positioned on the top surface of the cup cylinder bearing mold head 46, at which point the cup paper is in a horizontally unfolded state on the top of the cup cylinder bearing mold head 46. Subsequently, the servo paper holder 47 is activated, and its multiple arc-shaped grippers, arranged circumferentially around the cup holder mold head 46, close towards the axis of the cup holder mold head 46. This wraps the cup paper, which was originally laid flat on the top surface of the cup holder mold head 46, around the mold head 46 and adheres it to the outer peripheral wall of the mold head 46, forming a cylindrical initial shape. Simultaneously with the servo paper holder 47 closing and wrapping, the floating pressure head 45, fixedly mounted on the servo cylinder frame 44, extends vertically downwards under the cylinder's drive. Its lower end presses against the overlapping part of the cup paper, pressing and shaping the side overlap of the cup paper, thus completing the folding and forming of the paper tube. The formed paper tube is removed from the cup tube bearing mold head 46 and transferred to the cup body transition support 48, which is fixedly installed at the end of the servo conveyor frame 41. The cup body transition support 48 guides the formed paper tube and receives it in the mold station of the corresponding inner cup tube mold turntable 2 or outer cup tube mold turntable 3, realizing the synchronous feeding of the inner and outer cup tubes on their respective turntables. Among them, the inner cup tube formed by the folding mechanism 4 located outside the inner cup tube mold turntable 2 is transferred to the inner cup tube mold turntable 2, and the outer cup tube formed by the folding mechanism 4 located outside the outer cup tube mold turntable 3 is transferred to the outer cup tube mold turntable 3.

[0068] The inner cup mold turntable 2 and the outer cup mold turntable 3 operate in an intermittent rotation manner, each driving the cups on it to rotate sequentially to different processing positions. When the outer cup mold turntable 3 rotates the outer cup it carries to the glue application position corresponding to the glue application mechanism 5 configured at the outer edge of the outer cup mold turntable 3, the glue application mechanism 5 starts and performs glue application on the inner wall of the outer cup. During the operation of the glue application mechanism 5, powdered starch adhesive raw material and liquid water raw material are supplied from external sources. The powdered starch adhesive enters the internal cavity of the storage cylinder 541 through the powdered starch adhesive injection pipe 545 fixedly installed on one side of the storage cylinder 541, while the liquid water enters the internal cavity of the storage cylinder 541 through the liquid water injection pipe 546 fixedly installed on the other side of the storage cylinder 541 and enters the extended hose 547 fixedly connected to the insertion end of the liquid water injection pipe 546. During this process, the second servo motor 542, fixedly installed at the top center of the storage cylinder 541, is started. Its output end drives the vibrating agitator 543, fixedly installed at its insertion end, to continuously rotate within the internal cavity of the storage cylinder 541. This keeps the powdered starch glue in a fluidized, fluffy, and uniform state within the storage cylinder 541, preventing natural settling or clumping of the powdered starch glue inside the storage cylinder 541. Simultaneously, the extended hose 547 passes through the central area of ​​the discharge port 544, located at the bottom center of the storage cylinder 541, through the gap between the vibrating agitator 543 and the inner wall of the storage cylinder 541. Liquid water remains physically isolated from the powdered starch glue inside the storage cylinder 541.

[0069] The raw materials are always kept isolated and transported in parallel within the retractable outer cover hose 6. The lower opening of the retractable outer cover hose 6 is fixedly connected to the feed valve port 562, which is fixedly installed at the top center of the mixing sphere 561. The powdered starch adhesive is fed into the spherical cavity inside the mixing sphere 561 through the annular gap channel of the retractable outer cover hose 6 and the feed valve port 562. The extended hose 547 passes through the feed valve port 562 into the interior of the mixing sphere 561. Liquid water is independently transported to the interior of the water receiving sleeve 72 through the internal channel of the extended hose 547.

[0070] As the powdered starch adhesive and liquid water enter the spherical cavity inside the mixing sphere 561, the third servo motor 71, which is fixedly installed in the first reserved cavity 569, is started. The first reserved cavity 569 is located in the middle position below the spherical partition shell 564. The output end of the third servo motor 71 extends out of the center end of the spherical partition shell 564, driving the water receiving sleeve 72, which is fixedly installed on its protruding end, to rotate synchronously. Each stirring blade holder 73 rotates synchronously with the water receiving sleeve 72, continuously mechanically stirring and mixing the powdered starch adhesive and liquid water that have entered the spherical cavity inside the mixing sphere 561. The guide pipe 74 fixedly connected to each mixing blade holder 73 is connected to the hollow flow channel inside the water receiving sleeve 72. Liquid water enters the guide pipe 74 through the hollow flow channel inside the water receiving sleeve 72, and is evenly sprayed into the powdered starch glue inside the spherical cavity of the mixing ball 561 by several one-way spray heads 75 fixedly installed on each guide pipe 74 during the rotation of the mixing blade holder 73. This allows the liquid water to fully contact and quickly disperse with the powdered starch glue at the moment of injection, instantly generating a fresh starch glue solution with suitable viscosity and fluidity inside the spherical cavity of the mixing ball 561. During this process, the heating ring 9, which is fixedly installed inside the second reserved cavity 5610, continues to work. The heat generated by the heating ring 9 is conducted through the cavity wall of the second reserved cavity 5610 to the spherical partition shell 564, and then evenly transferred to the powder-adhesive mixing cavity above the spherical partition shell 564 through the thermally conductive coating 568 configured on the surface of the spherical partition shell 564, so that the starch adhesive solution in the mixing process maintains a stable temperature.

[0071] The fresh starch adhesive solution generated by instant mixing inside the mixing sphere 561 flows from the inner spherical cavity of the mixing sphere 561 into the annular cavity of the outer adhesive discharge annular cavity 563 through a circular flow groove 565 located at the intersection of the bottom outer edge of the mixing sphere 561 and the outer adhesive discharge annular cavity 563. It then enters several reserved spherical cavities 566 located on the outer edge of the outer adhesive discharge annular cavity 563 and comes into contact with the bead-shaped spherical surface of the adhesive-coated roller ball 567 that is movably installed in each reserved spherical cavity 566. During the process of adjusting the height and posture of the glue coating mechanism 5 to align with the inner wall of the outer cup, the fine-tuning unit 55, which is fixedly installed at the bottom of the dispensing cylinder 541, works in coordination to realize the vertical adjustment of the mixing unit 56. At the same time, the second hinge frame 554, which is fixedly installed at the middle section of the second servo telescopic rod 552, forms a hinge connection with the extended end of the third servo telescopic rod 553. The third servo telescopic rod 553 extends towards the middle section of the second servo telescopic rod 552 in an inclined posture. When the third servo telescopic rod 553 performs telescopic movement, its movable end applies a pushing and pulling force to the middle section of the second servo telescopic rod 552 through the second hinge frame 554, causing the second servo telescopic rod 552 to swing back and forth around the first hinge frame 551 at its upper end. This, in turn, causes the third hinge frame 555 and the annular sleeve plate 556, which are fixed at the lower end of the second servo telescopic rod 552, to move and deflect in the back and forth direction. The second servo telescopic rod 552 and the third servo telescopic rod 553 work together to enable the annular sleeve plate 556 to achieve adjustable degrees of freedom in both the vertical and front-back directions. This allows the mixing ball 561, which is movable and fitted onto the annular sleeve plate 556, to adjust its spatial position and posture along with the annular sleeve plate 556. Ultimately, the mixing ball 561 extends obliquely and approaches the inner wall of the outer cup cylinder. The bead-shaped surface of the glue-coating roller 567 exposed at the opening of the reserved spherical cavity 566 on the outer edge of the mixing ball 561 directly contacts the inner wall of the outer cup cylinder. During this process, the dispensing cylinder 541 rotates around its own vertical central axis under the drive of the first servo motor 53, driving the fine-tuning unit 55 and the mixing unit 56, which are fixedly installed at the bottom of the dispensing cylinder 541, to rotate synchronously. This allows the glue-coating roller 567 on the outer edge of the mixing ball 561 to uniformly contact and coat the glue on the circumferential direction of the inner wall of the outer cup cylinder.

[0072] When the bead-shaped ball of the glue-coating roller 567 contacts the inner wall of the outer cup, the outer cup moves relative to the glue-coating roller 567 as the outer cup mold turntable 3 rotates. The bead-shaped ball of the glue-coating roller 567 rolls in the reserved spherical cavity 566, and the fresh starch glue adhering to its surface is continuously transferred and coated onto the inner wall surface of the outer cup, forming a continuous glue layer on the circumferential direction of the inner wall of the outer cup.

[0073] When the glue application operation needs to be stopped, the locking mechanism 8, located at the bottom center of the mixing ball 561, is activated. The fourth servo telescopic rod 81 performs a tightening action, its output end retracts upward, driving the outer traction frame 82, which is fixedly installed at the end of the output end of the fourth servo telescopic rod 81, to move upward as a whole. The outer traction frame 82 further drives the rubber pressure ring 83, which is fixedly installed on its outer edge, to move towards the outer glue discharge annular cavity 563. The annular inner wall of the rubber pressure ring 83 gradually approaches and contacts the rod end of each glue application ball 567 on the outer edge of the outer glue discharge annular cavity 563, transmitting the braking force to the bead-shaped glue application ball 567 through the rod end. The sphere inhibits the free rolling of the adhesive ball 567 in the reserved spherical cavity 566 and locks it in its current position, thereby stopping the adhesive application operation. When adhesive application needs to be resumed, the fourth servo telescopic rod 81 performs a relaxation action, its output end extends downward, the outer traction frame 82 and the rubber pressure ring 83 move downward simultaneously, the rubber pressure ring 83 disengages from the contact with the end of the adhesive ball 567 rod, releasing the clamping force on the end of the rod, the adhesive ball 567 returns to the free rolling state in the reserved spherical cavity 566, and the adhesive application operation continues.

[0074] The outer cup cylinder coated with starch adhesive continues to rotate with the outer cup cylinder mold turntable 3 to the fitting station. The glued outer cup cylinder fits into the inner cup cylinder, which has been transferred from the inner cup cylinder mold turntable 2 to the same fitting station. The starch adhesive layer on the inner wall of the outer cup cylinder bonds and fixes the inner cup cylinder to the outer cup cylinder, thus completing the forming of the double-layer paper cup. The formed double-layer paper cup is further processed by subsequent processes such as edge rolling to finally form the finished paper cup.

[0075] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0076] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A paper cup production machine integrating inner and outer cups, comprising an integrated machine frame (1), wherein an inner cup mold turntable (2) and an outer cup mold turntable (3) are respectively assembled at the middle position of the upper surface of the integrated machine frame (1), and a folding mechanism (4) is provided at the outer edge of both the inner cup mold turntable (2) and the outer cup mold turntable (3) to fold out the inner and outer cup cylinders that are conveyed to the inner cup mold turntable (2) and the outer cup mold turntable (3), characterized in that: The outer edge of the outer cup cylinder mold turntable (3) is provided with a glue application mechanism (5) to apply glue to the inner wall of the outer cup cylinder; The coating mechanism (5) includes a storage cylinder unit (54) for storing powdered starch glue and liquid water respectively. A fine-tuning unit (55) is provided at the bottom of the storage cylinder unit (54), and a mixing unit (56) is provided at the adjustment end of the fine-tuning unit (55). The mixing unit (56) and the storage cylinder unit (54) are connected by a retractable outer hose (6) for conveying powdered starch glue and liquid water respectively. The mixing unit (56) includes a mixing ball (561) for receiving powdered starch glue and liquid water and a stirring mechanism (7) located inside the mixing ball (561) for real-time mixing. A ring of several independent coating balls (567) is provided on the outer edge of the mixing ball (561). The mixing ball (561) is extended obliquely by the fine adjustment unit (55) to approach the inner wall of the outer cup, so that the coating balls (567) directly contact the inner wall of the outer cup for rolling coating.

2. The paper cup production machine with integrated inner and outer cups according to claim 1, characterized in that, The coating mechanism (5) includes several first servo telescopic rods (51) that are vertically fixed on the upper surface of the integrated machine frame (1) at one end of the outer cup mold turntable (3). A platform plate (52) is fixedly installed on the top output end of the first servo telescopic rod (51). A first servo motor (53) is fixedly installed at the middle position of the upper surface of the platform plate (52). The storage cylinder unit (54) includes a sub-storage cylinder (541) fixedly installed on the bottom output end of the first servo motor (53). A powdered starch glue injection pipe (545) is fixedly installed at one end of the sub-storage cylinder (541), and a liquid water injection pipe (546) is fixedly installed at the other end. A discharge cylinder port (544) is opened at the middle position of the bottom of the sub-storage cylinder (541).

3. The paper cup production machine with integrated inner and outer cups according to claim 2, characterized in that, The storage cylinder unit (54) also includes a second servo motor (542) fixedly installed at the middle position of the top of the storage cylinder (541). The output end of the second servo motor (542) is inserted into the interior of the storage cylinder (541), and a live glue stirring rack (543) is fixedly installed on the inserted end. The live glue stirring rack (543) is claw-shaped, and there is a gap between the outer edge and the inner wall of the storage cylinder (541). One end of the liquid water injection pipe (546) inserted into the interior of the storage cylinder (541) is fixedly connected to an external flexible hose (547).

4. A paper cup production machine integrating inner and outer cups according to claim 3, characterized in that, The extended hose (547) passes through the middle of the discharge cylinder opening (544) through the gap between the live glue mixing frame (543) and the inner wall of the distribution storage cylinder (541). The powdered starch glue injection pipe (545) is inserted into the inner top of the distribution storage cylinder (541). A retractable outer cover hose (6) is fixedly connected to the bottom of the discharge cylinder opening (544). One end of the extended hose (547) that passes through the middle of the discharge cylinder opening (544) is clamped inside the retractable outer cover hose (6). There is a gap between the inner wall of the retractable outer cover hose (6) and the outside of the extended hose (547) to allow the powdered starch glue to pass through.

5. A paper cup production machine integrating inner and outer cups according to claim 4, characterized in that, The fine-tuning unit (55) includes two first hinge frames (551) that are fixedly installed at the bottom of the storage cylinder (541) and are arranged flat. A second servo telescopic rod (552) and a third servo telescopic rod (553) are respectively hinged to the two first hinge frames (551). The second servo telescopic rod (552) extends vertically downward as a whole, and a second hinge frame (554) is fixedly installed at the middle section of the second servo telescopic rod (552). The third servo telescopic rod (553) extends at an angle toward the middle section of the second servo telescopic rod (552), and the extended end is hinged to the second hinge frame (554). A third hinge frame (555) is hinged to the bottom extended end of the second servo telescopic rod (552), and a circular sleeve plate (556) is fixedly installed through the third hinge frame (555).

6. A paper cup production machine integrating inner and outer cups according to claim 5, characterized in that, The mixing unit (56) includes a mixing sphere (561) movably fitted on the inner ring of a circular sleeve plate (556). A feed valve (562) is fixedly installed at the top center of the mixing sphere (561). A retractable outer hose (6) is fixedly connected to the feed valve (562) to supply powdered starch adhesive into the mixing sphere (561). The extended hose (547) passes through the feed valve (562) into the mixing sphere (561). A circular groove is provided on the outer edge of the top of the sphere (561) to fit movably with the circular ring plate (556). A spherical partition shell (564) is fixedly connected to the bottom of the sphere (561). The spherical partition shell (564) divides the interior of the sphere (561) into two independent areas. A first reserved cavity (569) and a second reserved cavity (5610) are provided in the independent area below the spherical partition shell (564) of the sphere (561).

7. A paper cup production machine integrating inner and outer cups according to claim 6, characterized in that, The first reserved cavity (569) is located at the middle position below the spherical partition shell (564). The stirring mechanism (7) includes a third servo motor (71) fixedly installed in the first reserved cavity (569). The output end of the third servo motor (71) passes through the center end of the spherical partition shell (564), and a water receiving sleeve (72) is fixedly installed on the end of ...

8. A paper cup production machine integrating inner and outer cups according to claim 7, characterized in that, The mixing unit (56) further includes an outer glue discharge annular cavity (563) fixedly installed on the outer edge of the bottom of the mixing sphere (561). The outer glue discharge annular cavity (563) is an annular cavity in whole, and a flow annular groove (565) is opened at the position where the outer glue discharge annular cavity (563) and the mixing sphere (561) intersect to connect the two cavities. The outer glue discharge annular cavity (563) protrudes outward in whole, and several reserved spherical cavities (566) are opened in a circular pattern on the outer edge of the outer glue discharge annular cavity (563). Each reserved spherical cavity (566) is movably installed with a glue-coated ball (567). The glue-coated ball (567) is composed of a bead-shaped sphere and a rod penetrating the axial end of the sphere. One end of the rod on the sphere passes through the side of the outer glue discharge annular cavity (563) and extends out.

9. A paper cup production machine integrating inner and outer cups according to claim 8, characterized in that, A locking mechanism (8) is provided at the bottom center of the mixed rubber ball (561). The locking mechanism (8) includes a fourth servo telescopic rod (81) and an external traction frame (82) fixedly installed on the output end of the fourth servo telescopic rod (81). A rubber pressure ring (83) is fixedly installed on the external traction frame (82). The rubber pressure ring (83) moves toward the outer rubber discharge annular cavity (563) under the tightening action of the fourth servo telescopic rod (81) to press the rod end of each glued ball (567) protruding from the outer rubber discharge annular cavity (563). The second reserved cavity (5610) is an annular cavity surrounding the outside of the first reserved cavity (569). A heating ring (9) is fixedly installed inside the second reserved cavity (5610). The surface of the spherical partition shell (564) is provided with a thermally conductive coating (568).

10. A paper cup production machine integrating inner and outer cups according to claim 9, characterized in that, The folding mechanism (4) includes a servo conveyor frame (41) fixedly installed on the integrated machine frame (1). A cup paper placement rack (42) is fixedly installed on the outer end of the servo conveyor frame (41) for placing cup paper on the servo conveyor frame (41). Limiting pressure strips (43) are installed on the servo conveyor frame (41) along the conveying path to ensure smooth conveying of cup paper. A servo cylinder frame (44) is fixedly installed at the middle end of the servo conveyor frame (41). A floating pressure head is fixedly installed on the servo cylinder frame (44). (45) A cup cylinder bearing mold head (46) is fixedly installed at the bottom middle position of the servo cylinder frame (44) to receive the cup paper. A servo paper holder (47) is fixedly installed on the outer side of the cup cylinder bearing mold head (46) to wrap the cup paper around the outside of the cup cylinder bearing mold head (46) and cooperate with the floating pressure head (45) to press down to fold out the paper tube. A cup body transition support (48) is fixedly installed on the end of the servo conveyor frame (41) to transfer the folded paper tube to the inner cup cylinder mold turntable (2) and the outer cup cylinder mold turntable (3).

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