Multi-stage gum dipping, drying and dipping device based on gum dipping canvas production and use method of multi-stage gum dipping, drying and dipping device
By using an electric hydraulic cylinder driven by a multi-stage impregnation and drying device and a synchronous adhesive delivery design, the problems of adhesive damage and uneven adhesive layer in the production of impregnated canvas are solved, achieving efficient and uniform impregnation and cleaning results.
Patent Information
- Application Number
- CN202511744888.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-25
- Publication Date
- 2026-02-10
AI Technical Summary
In the current production of dipped canvas, the adhesive liquid is prone to damage to the molecular chain structure during the pump-driven transportation process, resulting in viscosity fluctuations and bubble formation, which affects product quality. In addition, traditional equipment requires flipping the dipped canvas, which leads to uneven adhesive layer thickness and complicated operation.
The device employs a multi-stage impregnation and drying system. The first and second extrusion components, driven by an electric hydraulic cylinder, enable bidirectional synchronous delivery of the adhesive. Combined with the design of the extension tube and discharge block, it ensures that both sides of the canvas are impregnated with adhesive simultaneously. Automatic cleaning is achieved through the impurity removal component, eliminating the need for disassembly.
It prevents damage to the molecular chain structure of the adhesive, reduces bubble generation, ensures uniformity of the adhesive layer, improves production efficiency and cleaning convenience, and reduces operational difficulty and residual impact.
Smart Images
Figure CN121490989A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of impregnation equipment technology, specifically to a multi-stage impregnation and drying apparatus for the production of impregnated canvas and its usage method. Background Technology
[0002] The multi-stage impregnation and drying impregnation device for producing dipped canvas is an automated industrial equipment adapted to the production needs of dipped canvas, integrating multiple impregnation and multi-stage drying functions. It typically consists of mechanisms such as guide unwinding, multi-stage impregnation, extrusion thickness control, segmented drying, and winding and storage. Some models are also equipped with detection and automatic control systems. It generally includes multiple impregnation tanks and corresponding drying channels. The canvas is pulled by guide rollers to complete multiple impregnations in sequence. During the process, the impregnation thickness is adjusted by extrusion roller groups or adjustable scrapers. Excess glue can be returned to the glue tank to reduce waste. Then, it enters the drying unit composed of tubular radiators, hot air dryers, etc. to dry gradually. Some vertical structure models can avoid the canvas from contaminating the drying components. Some equipment is also equipped with a PLC system to monitor temperature and impregnation speed. Some are equipped with light detection and other mechanisms to adjust parameters in real time. Finally, the traction and winding mechanism completes the winding, thereby ensuring that the glue layer of the dipped canvas is firmly bonded and has a uniform thickness, improving product quality and production efficiency. Impregnated canvas is a functional composite material made from polyester, nylon, cotton and other fiber fabrics as the base fabric, through surface treatment, impregnation, drying and curing processes. It combines the high strength and flexibility of the fiber base material with the adhesion, wear resistance, aging resistance and waterproof properties of the adhesive layer. It is widely used in conveyor belt skeletons, rubber hoses, waterproof rolls, industrial seals and other fields, and is one of the core materials for improving the structural stability and performance of related products. In existing dipped canvas production, the adhesive is mostly conveyed by pumps. Although this method can achieve efficient continuous feeding, the adhesive usually contains polymers such as resin and rubber. When conveyed in the pump, it undergoes high-speed shearing and extrusion, which can easily damage its molecular chain structure, leading to abnormal fluctuations in the adhesive viscosity. In severe cases, it can even cause clumping or localized solidification. At the same time, the shearing force generated by high-speed conveying can cause air to be drawn into the adhesive, forming bubbles. If these bubbles are not eliminated in time, they will adhere to the canvas surface or seep into the fiber gaps during the dipping process, eventually forming pinhole-like defects in the finished product, affecting product quality. Therefore, to address the above problems, a multi-stage dipping, drying, and impregnation device based on dipped canvas production and its usage method are proposed. Summary of the Invention
[0003] The purpose of this invention is to provide a multi-stage impregnation and drying apparatus and its method of use for the production of impregnated canvas, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, the present invention provides the following technical solution: A multi-stage impregnation and drying device and its usage method for producing impregnated canvas include a winding and drying assembly. A storage assembly is fixedly connected to one side of the winding and drying assembly. A first extrusion assembly is fixedly connected to the lower end of the storage assembly. A second extrusion assembly and a waste removal assembly are fixedly connected to the inner side of the first extrusion assembly. The bottom ends of the second extrusion assembly and the waste removal assembly are both fixedly connected to a coating assembly. The first extrusion assembly includes a collection box. A guide cylinder is fixedly connected to the top of the collection box. An expansion disc is fixedly connected to the top of the guide cylinder. An outlet is provided near the upper end of the guide cylinder. A first duckbill valve is fixedly connected to the inner side of the expansion disc. A pre-storage cylinder is slidably connected to the outer side of the expansion disc. The second extrusion assembly includes a fixed cylinder. A second duckbill valve is fixedly connected to the inner side of the fixed cylinder. The inner side of the fixed cylinder slides with the outer side of the movable cylinder. A first insertion tube is fixedly connected to the bottom end of the movable cylinder. A first rubber ring is fixedly connected to the lower end of the movable cylinder. A fourth duckbill valve is fixedly connected to the inner side of the first insertion tube.
[0005] As a further optimization of the present invention, the winding and drying assembly includes a support plate, on one side of which a drying box and a receiving box are fixedly connected by bolts, and an extrusion roller, a winding roller and a feeding roller are rotatably connected to the inner side of the support plate, and the receiving box is located at the lower end of the drying box and the extrusion roller.
[0006] As a further optimization of the present invention, a crossbeam is fixedly connected to one side of the support plate, and an electric hydraulic cylinder is fixedly connected to the inner side of the crossbeam. The piston rod end of the electric hydraulic cylinder is fixedly connected to the top of the central box.
[0007] As a further optimization of the present invention, the material storage assembly includes a cover plate, a feed cylinder is fixedly connected to the top of the cover plate, a material storage box is fixedly connected to the bottom of the cover plate, a lower opening is provided at the lower end of the material storage box, a flexible hose is fixedly connected to the lower end of the material storage box, and the inner side of the cover plate communicates with the inner side of the flexible hose.
[0008] As a further optimization of the present invention, the following features are provided: the bottom end of the hose is fixedly connected to the top end of the movable cylinder, the inner side of the hose is connected to the inner side of the movable cylinder, the bottom end of the cover plate near the lower opening is fixedly connected to the top end of the pre-storage cylinder, and the inner side of the pre-storage cylinder is connected to the inner side of the storage box through the lower opening.
[0009] As a further optimization of the present invention, the impurity removal component includes a first drain pipe, a third duckbill valve is fixedly connected to the lower end of the first drain pipe, the inner side of the first drain pipe is slidably engaged with the outer side of the second drain pipe, a second insertion tube is fixedly connected to the bottom end of the second drain pipe, a second rubber ring is fixedly connected to the lower end of the second drain pipe, a drain outlet is opened near the upper end of the second drain pipe, the drain outlet communicates with the inner side of the second drain pipe, and the outer side of the second rubber ring is in contact with the inner side of the first drain pipe.
[0010] As a further optimization of the present invention, the upper end of the second drain pipe is fixedly connected to the ear seat on the left end, the two ear seats are distributed and fixed on the left and right sides of the collection box, and the bottom end of the first drain pipe is fixedly connected to the side tube on the left end.
[0011] As a further optimization of the present invention, the adhesive application component includes a discharge block, a discharge groove is provided on the inner side of the discharge block, an adhesive collection shell is fixedly connected to the bottom end of the discharge block, and an upper opening is provided on the upper end of the adhesive collection shell.
[0012] As a further optimization of the present invention, the side cylinders are distributed and fixed on the left and right sides of the glue collection shell, the inner side of the side cylinders is provided with a folded channel, the side cylinders are fixedly connected to the support plate, the folded channel is connected to the inner side of the glue collection shell, the left end of the folded channel is connected to the inner side of the first drain pipe, the right end of the folded channel is connected to the inner side of the fixed cylinder, and the top end of the right end of the side cylinder is fixedly connected to the bottom end of the fixed cylinder.
[0013] How to use a multi-stage impregnation and drying device for producing impregnated canvas; Step 1: Before impregnation, the canvas led out by the feeding roller passes between the discharge block and the extension tube, and the canvas is attached to the top of the discharge block. It is then led out between two extrusion rollers, which extrude the impregnated canvas. The canvas passes through the inside of the drying chamber, which is equipped with heating wires and a fan. The drying chamber dries the impregnated canvas. The canvas is then wound and fixed on the outside of the take-up roller. The glue is filled into the cover plate through the feeding cylinder. The glue flows into the pre-storage cylinder through the lower port. The glue flows into the movable cylinder through the hose. The first and fourth duckbill valves are closed. Step 2: During the glue impregnation process, the electric hydraulic cylinder is activated to drive the central box to move up and down in a circular motion. The central box drives the guide cylinder to move, and the central box drives the movable cylinder to move through the lugs. When the guide cylinder moves up and down, it will drive the expansion plate to move. The expansion plate slides inside the pre-storage cylinder. A rubber sealing ring is fixedly connected to the outside of the expansion plate and a rubber sealing ring is fixedly connected to the inside of the lower end of the pre-storage cylinder. When the expansion plate moves upward, a negative pressure is generated inside the pre-storage cylinder at the lower end of the expansion plate. The valve port at the lower end of the first duckbill valve is opened under pressure, and the glue at the upper end of the expansion plate will enter the lower end of the expansion plate through the inside of the first duckbill valve. When the guide cylinder and the expansion plate move downward, the glue at the lower end of the expansion plate enters the inside of the guide cylinder through the discharge port, and the guide cylinder enters the inside of the central box. Step 3: At the same time, when the movable cylinder moves upward, a negative pressure is generated in the space inside the fixed cylinder between the fourth duckbill valve and the second duckbill valve. The second duckbill valve closes, and the fourth duckbill valve opens under pressure. The first rubber ring seals the movable cylinder and the fixed cylinder. The glue inside the movable cylinder enters the fixed cylinder through the fourth duckbill valve. When the movable cylinder moves downward, the fourth duckbill valve closes and the second duckbill valve opens under pressure. The glue inside the fixed cylinder is squeezed out and enters the folded channel and the glue collection shell. The glue collection shell collects the glue and enters the discharge trough through the upper opening. The glue is squeezed out and comes into contact with the canvas. Step 4: During cleaning, the electric hydraulic cylinder controls the central box to move continuously downwards. The extension tube aligns vertically with the discharge trough and is inserted into the discharge trough. The bottom of the central box fits against the top of the discharge block. A rubber pad is fixed to the bottom of the central box, sealing the discharge block and the central box. As the guide cylinder continues to move downwards, the first insertion tube is inserted into the second duckbill valve. The valve port at the lower end of the second duckbill valve deforms under pressure. The second insertion tube is then inserted into the third duckbill valve, which also opens. The water pump's pipe is inserted into the feed cylinder and sealed. The water pump delivers water to the cover plate. The water enters the pre-storage cylinder and opens the first duckbill valve. The outlet enters the guide cylinder, and the inner channel enters the discharge trough. The mixture inside the glue collection shell is stirred. The water enters the discharge trough through the second extrusion assembly and then enters the second drain pipe inside the third duckbill valve, flowing out of the drain outlet.
[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, by setting a first extrusion assembly and a second extrusion assembly, the device changes the traditional method of conveying adhesive by pump body. This conveying method will not cause damage to the molecular chain structure of the adhesive due to high-speed interface, ensuring that the viscosity of the adhesive is not affected, thereby preventing the phenomenon of agglomeration and solidification. At the same time, this adhesive conveying method will not cause a large flow range of the adhesive, thereby significantly reducing the generation of bubbles and ensuring the quality of canvas impregnation. 2. In this invention, by setting an extension tube and a discharge block, the device allows the upper and lower surfaces of the canvas to be impregnated with glue within the same working cycle, which completely changes the traditional device that may require flipping and reprocessing after impregnation on one side. This not only ensures the consistency of glue layer wetting on both sides of the canvas and avoids the problem of uneven glue layer thickness caused by secondary operation, but also greatly shortens the working time of a single impregnation, further improving production efficiency. 3. In this invention, through the fixed cylinder, the second duckbill valve, the impurity discharge component and the discharge trough, the device can automatically open and seal the internal channels through the drive mechanism, and complete the cleaning operation without disassembly. This not only eliminates the tedious process of traditional disassembly and cleaning, reducing the difficulty of operation, but also allows for a thorough rinsing of the internal structures related to the glue delivery by high-pressure water flow, ensuring thorough cleaning, effectively reducing the impact of residual glue on subsequent production, and significantly improving the convenience and efficiency of equipment maintenance. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall exploded structure of the present invention; Figure 3 This is a cross-sectional structural diagram of the material storage component of the present invention; Figure 4 This is a schematic diagram of the structure of the electric hydraulic cylinder of the present invention; Figure 5 This is a schematic diagram of the structure of the first extrusion assembly of the present invention; Figure 6 This is a schematic diagram of the pre-storage cylinder structure of the present invention; Figure 7 This is a cross-sectional structural diagram of the adhesive coating assembly of the present invention; Figure 8 This is a cross-sectional structural diagram of the second extrusion assembly of the present invention; Figure 9 This is a cross-sectional structural diagram of the impurity removal component of the present invention; Figure 10 This is an exploded structural diagram of the adhesive coating assembly of the present invention.
[0016] In the diagram: 1. Rewinding and drying assembly; 11. Support plate; 12. Drying box; 13. Extrusion roller; 14. Rewinding roller; 15. Take-up box; 16. Discharge roller; 17. Cross frame; 18. Electric hydraulic cylinder; 2. Material storage assembly; 21. Cover plate; 22. Feed cylinder; 23. Storage bin; 24. Bottom opening; 25. Hose; 3. First extrusion assembly; 31. Concentrating box; 32. Ear seat; 33. Guide tube; 34. Pre-storage tube; 35. Discharge port; 36. Expansion plate; 37. First duckbill valve; 38. Extension tube; 39. Inner channel; 4. Second extrusion assembly; 41. Fixed cylinder; 42. Second duckbill valve; 43. Movable cylinder; 44. First insertion tube; 45. First rubber ring; 46. Fourth duckbill valve; 5. Waste removal assembly; 51. First drain pipe; 52. Third duckbill valve; 53. Second drain pipe; 54. Second insertion tube; 55. Second rubber ring; 56. Drain outlet; 6. Glue application assembly; 61. Discharge block; 62. Discharge trough; 63. Glue collection shell; 64. Top opening; 65. Side cylinder; 66. Bending channel. Detailed Implementation
[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.
[0019] Please see Figures 1-10 The present invention provides a technical solution: A multi-stage impregnation and drying device for producing impregnated canvas and its usage method include a winding and drying assembly 1, a material storage assembly 2 fixedly connected to one side of the winding and drying assembly 1, a first extrusion assembly 3 fixedly connected to the lower end of the material storage assembly 2, a second extrusion assembly 4 and a waste removal assembly 5 fixedly connected to the inner side of the first extrusion assembly 3, and the bottom ends of the second extrusion assembly 4 and the waste removal assembly 5 both fixedly connected to a coating assembly 6. The first extrusion assembly 3 includes a collection box 31, a guide cylinder 33 fixedly connected to the top of the collection box 31, and an expansion disc 3 fixedly connected to the top of the guide cylinder 33. 6. The guide tube 33 has an outlet 35 near the upper end. The expansion plate 36 is fixedly connected to the inner side of the first duckbill valve 37. The expansion plate 36 is slidably connected to the outer side of the pre-storage tube 34. The second extrusion assembly 4 includes a fixed tube 41. The fixed tube 41 is fixedly connected to the inner side of the fixed tube 41. The inner side of the fixed tube 41 is slidably engaged with the outer side of the movable tube 43. The bottom end of the movable tube 43 is fixedly connected to the first insertion tube 44. The movable tube 43 is fixedly connected to the lower end of the first rubber ring 45. The inner side of the first insertion tube 44 is fixedly connected to the fourth duckbill valve 46.
[0020] As a further implementation of this solution, the winding and drying assembly 1 includes a support plate 11. A drying box 12 and a take-up box 15 are fixedly connected to one side of the support plate 11 by bolts. An extrusion roller 13, a winding roller 14, and a feeding roller 16 are rotatably connected to the inside of the support plate 11. The take-up box 15 is located at the lower end of the drying box 12 and the extrusion roller 13. With the above arrangement, the support plate 11 serves as the core mounting carrier. The drying box 12 and the take-up box 15 are firmly fixed by bolts, ensuring the positional accuracy of the drying and support components. The extrusion roller 13, the winding roller 14, and the feeding roller 16 rotatably connected to the inside can realize the smooth traction and winding of the canvas. Combined with the extrusion and even glue function of the extrusion roller 13 and the drying function of the drying box 12, a continuous operation link of "traction, glue impregnation, glue even glue and drying" is formed. The reasonable layout of the take-up box 15 provides stable support for each component, reduces the problem of uneven glue layer caused by component shaking during operation, and improves production stability. As a further implementation of this solution, a crossbeam 17 is fixedly connected to one side of the support plate 11, and an electric hydraulic cylinder 18 is fixedly connected to the inner side of the crossbeam 17. The piston rod end of the electric hydraulic cylinder 18 is fixedly connected to the top of the central box 31. Through the above arrangement, the crossbeam 17 provides a stable installation base for the electric hydraulic cylinder 18, ensuring the stability of the driving force transmission of the electric hydraulic cylinder 18. The electric hydraulic cylinder 18 drives the central box 31 to achieve precise up and down cyclic movement through the piston rod. This controllable power output method replaces the traditional pump body drive, which not only provides stable power for the bidirectional synchronous delivery of adhesive, but also avoids the damage of high-speed shearing to the adhesive. At the same time, the dipping rhythm can be flexibly controlled by adjusting the operating parameters of the electric hydraulic cylinder 18 to adapt to the production needs of different specifications of canvas and improve the versatility of the device. As a further implementation of this solution, the storage component 2 includes a cover plate 21, with a feed cylinder 22 fixedly connected to the top of the cover plate 21 and a storage box 23 fixedly connected to the bottom of the cover plate 21. The storage box 23 has a lower opening 24 at its lower end and a hose 25 fixedly connected to its lower end. The inner side of the cover plate 21 is connected to the inner side of the hose 25. Through the above configuration, the cover plate 21 serves as the core for storing adhesive, realizing centralized storage and stable supply of adhesive. The feed cylinder 22 provides a convenient interface for filling adhesive, facilitating quick replenishment of adhesive and ensuring sealing during filling, reducing adhesive waste and pollution. The storage box 23 forms a dual-path adhesive delivery channel through the lower opening 24 and the hose 25, allowing the adhesive to be simultaneously diverted to the upper and lower impregnation structures, providing material support for the simultaneous impregnation of both sides of the canvas, and avoiding the problem of uneven impregnation caused by insufficient adhesive supply from a single channel. As a further implementation of this solution, the bottom end of the hose 25 is fixedly connected to the top end of the movable cylinder 43, and the inner side of the hose 25 is connected to the inner side of the movable cylinder 43. The bottom end of the cover plate 21 near the lower opening 24 is fixedly connected to the top end of the pre-storage cylinder 34, and the inner side of the pre-storage cylinder 34 is connected to the inner side of the storage box 23 through the lower opening 24. Through the above settings, the fixed connection and connection design between the hose 25 and the movable cylinder 43, and between the pre-storage cylinder 34 and the storage box 23, constructs a leak-free adhesive delivery path, avoiding the overflow and waste of adhesive during delivery. This precise connection method ensures that the adhesive can be efficiently transferred from the storage unit to the upper and lower dipping units. Combined with the linkage structure driven by the electric hydraulic cylinder 18, it achieves precise synchronization of adhesive delivery and dipping action, ensuring the consistency of upper and lower dipping, and at the same time providing a structural foundation for the water flow channel during subsequent high-pressure cleaning, improving cleaning convenience. As a further implementation of this solution, the waste removal component 5 includes a first drain pipe 51. A third duckbill valve 52 is fixedly connected to the lower end of the first drain pipe 51. The inner side of the first drain pipe 51 slides against the outer side of the second drain pipe 53. A second insertion tube 54 is fixedly connected to the bottom end of the second drain pipe 53. A second rubber ring 55 is fixedly connected to the lower end of the second drain pipe 53. A drain outlet 56 is opened near the upper end of the second drain pipe 53, communicating with the inner side of the second drain pipe 53. The outer side of the second rubber ring 55 fits against the inner side of the first drain pipe 51. The upper end of the second drain pipe 53 is fixedly connected to the left-side ear seat 32. The two ear seats 32 are distributed and fixed on the left and right sides of the collection box 31. The bottom end of the first drain pipe 51 is fixedly connected to the left-side cylinder 65. Through the above configuration, the device can achieve automatic opening and sealing of the internal channel through the drive mechanism. The cleaning operation can be completed without disassembly, which not only eliminates the cumbersome process of traditional disassembly and cleaning and reduces the difficulty of operation, but also uses high-pressure water flow to thoroughly rinse the internal structure related to glue delivery, ensuring thorough cleaning and effectively reducing the impact of residual glue on subsequent production. This significantly improves the convenience and efficiency of equipment maintenance. The sliding fit design of the first drain pipe 51 and the second drain pipe 53 can move synchronously with the linkage of the central box 31, providing power transmission for the extrusion of glue at the lower end and the opening of the cleaning channel. The cooperation of the third duckbill valve 52 and the second insertion tube 54 realizes the on-off control of glue and cleaning water, ensuring accurate glue output during operation and smooth water flow during cleaning. The sealing fit design of the second rubber ring 55 prevents glue and cleaning water leakage, and the drain outlet 56 provides an efficient discharge channel for cleaning wastewater, ensuring thorough cleaning and reducing the impact of residual glue on subsequent production. As a further implementation of this solution, the adhesive application assembly 6 includes a discharge block 61, with a discharge groove 62 on the inner side of the discharge block 61. A glue collection shell 63 is fixedly connected to the bottom of the discharge block 61, and an upper opening 64 is provided at the upper end of the glue collection shell 63. Side cylinders 65 are distributed and fixed on the left and right sides of the glue collection shell 63. A zigzag channel 66 is provided on the inner side of the side cylinder 65. The side cylinder 65 is fixedly connected to the support plate 11, and the zigzag channel 66 communicates with the inner side of the glue collection shell 63. The left-end zigzag channel 66 communicates with the inner side of the first drain pipe 51, and the right-end zigzag channel 66 communicates with the inner side of the fixed cylinder 41. The top of the side cylinder 65 is fixedly connected to the bottom of the fixed cylinder 41. With the above configuration, the discharge block 61 serves as the core support component for canvas impregnation. Its top fitting design with the canvas provides a stable reference for impregnation. The discharge trough 62 provides a channel for receiving the upper adhesive and outputting the lower adhesive, achieving precise contact between the upper and lower adhesives and the canvas. The adhesive collection shell 63 and the upper opening 64 serve to collect and guide the adhesive, ensuring that the lower adhesive can be evenly delivered into the discharge trough 62, working together with the upper adhesive to achieve all-round impregnation of the canvas, improving the integrity and uniformity of the adhesive layer coverage.
[0021] Workflow: Before impregnation, the canvas drawn from the feeding roller 16 passes between the discharge block 61 and the extension tube 38, and the canvas is attached to the top of the discharge block 61. Then it is drawn out between the two extrusion rollers 13. The two extrusion rollers 13 have the effect of squeezing the impregnated canvas evenly. The canvas passes through the inside of the drying box 12. The drying box 12 is equipped with heating wires and fans to dry the impregnated canvas. The drawn-out canvas is wound and fixed on the outside of the take-up roller 14. The glue is filled into the cover plate 21 through the feed cylinder 22. The glue will flow into the pre-storage cylinder 34 through the lower opening 24. At the same time, the glue will flow into the movable cylinder 43 through the hose 25. Since the first duckbill valve 37 and the fourth duckbill valve 46 are in a closed state, they have the effect of blocking the glue. During impregnation, the electric hydraulic cylinder 18 is activated to drive the central box 31 to move up and down in a cyclical manner. The central box 31 drives the guide cylinder 33 to move, and the central box 31 drives the movable cylinder 43 to move via the lug 32. When the guide cylinder 33 moves up and down, it drives the expansion disk 36 to move. The expansion disk 36 slides inside the pre-storage cylinder 34. A rubber sealing ring is fixedly connected to the outer side of the expansion disk 36, and a rubber sealing ring is fixedly connected to the inner side of the lower end of the pre-storage cylinder 34. When the expansion disk 36 moves upward, a negative pressure is generated inside the pre-storage cylinder 34 at the lower end of the expansion disk 36. Through the action of negative pressure suction, the first... When the valve port at the lower end of the first duckbill valve 37 is opened by pressure, the glue at the upper end of the expansion plate 36 will enter the lower end of the expansion plate 36 through the inside of the first duckbill valve 37. When the guide tube 33 and the expansion plate 36 move downward, the glue at the lower end of the expansion plate 36 will enter the inside of the guide tube 33 through the outlet 35, and then enter the inside of the collection box 31 through the guide tube 33. The collection box 31 plays the role of concentrating the glue. The glue inside the collection box 31 is pressurized and spreads evenly into the collection box 31, and then flows out through the inner channel 39 opened by the extension tube 38. The outflowing glue falls onto the upper end of the canvas. Meanwhile, when the movable cylinder 43 moves upward, a negative pressure is generated in the space inside the fixed cylinder 41 between the fourth duckbill valve 46 and the second duckbill valve 42. At this time, the second duckbill valve 42 is closed and the fourth duckbill valve 46 is opened under pressure. The seal of the first rubber ring 45 on the movable cylinder 43 and the fixed cylinder 41 can prevent the glue from overflowing accidentally. At this time, the glue inside the movable cylinder 43 will enter the fixed cylinder 41 through the fourth duckbill valve 46. When the movable cylinder 43 moves downward, the fourth duckbill valve 46 is closed and the second duckbill valve 42 is opened under pressure, squeezing out the glue stored inside the fixed cylinder 41. The squeezed glue will enter the folded channel 66 and the glue collection shell 63. The glue collection shell 63 collects the glue and then enters the discharge trough 62 through the upper opening 64. When the glue is squeezed out and comes into contact with the canvas, the upper and lower ends of the canvas will be dipped in glue at the same time when the collection box 31 moves up and down, improving the overall glue dipping. During cleaning, the electric hydraulic cylinder 18 controls the continuous downward movement of the central box 31, aligning the extension tube 38 vertically with the discharge trough 62. The extension tube 38 then inserts into the discharge trough 62 until the bottom of the central box 31 is flush with the top of the discharge block 61. A rubber gasket is fixed to the bottom of the central box 31, sealing the discharge block 61 and the central box 31. Simultaneously, as the guide cylinder 33 continues to move downward, the first insertion tube 44 inserts into the second duckbill valve 42. The lower valve port of the second duckbill valve 42 deforms under pressure, creating an opening. The second insertion tube 54 then inserts into the third duckbill valve 52, opening its valve port as well. The water pump's inlet is then inserted into the feed cylinder. The inside of the 22 is sealed, and water is pumped into the cover plate 21. Under the pressure of the water, the water enters the pre-storage cylinder 34 and opens the first duckbill valve 37. It enters the guide cylinder 33 through the outlet 35, and like spraying glue, it enters the discharge trough 62 through the inner channel 39. It mixes in the glue collection shell 63. The water enters the discharge trough 62 through the second extrusion assembly 4, then enters the second drain pipe 53 through the third duckbill valve 52, and then flows out through the drain outlet 56. This achieves the effect of cleaning the inside of the storage assembly 2, the first extrusion assembly 3, and the second extrusion assembly 4. This cleaning method does not require disassembly of the device, which significantly improves the convenience of cleaning.
[0022] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A multi-stage impregnation and drying apparatus for producing impregnated canvas, comprising a winding and drying assembly (1), characterized in that: The winding and drying assembly (1) is fixedly connected to a material storage assembly (2) on one side. The lower end of the material storage assembly (2) is fixedly connected to a first extrusion assembly (3). The inner side of the first extrusion assembly (3) is fixedly connected to a second extrusion assembly (4) and a waste removal assembly (5). The bottom ends of the second extrusion assembly (4) and the waste removal assembly (5) are both fixedly connected to the coating assembly (6). The first extrusion assembly (3) includes a collection box (31), a guide tube (33) is fixedly connected to the top of the collection box (31), an expansion plate (36) is fixedly connected to the top of the guide tube (33), an outlet (35) is opened near the upper end of the guide tube (33), a first duckbill valve (37) is fixedly connected to the inner side of the expansion plate (36), and a pre-storage cylinder (34) is slidably connected to the outer side of the expansion plate (36). The second extrusion assembly (4) includes a fixed cylinder (41), a second duckbill valve (42) is fixedly connected to the inner side of the fixed cylinder (41), the inner side of the fixed cylinder (41) is slidably engaged with the outer side of the movable cylinder (43), a first insertion tube (44) is fixedly connected to the bottom end of the movable cylinder (43), a first rubber ring (45) is fixedly connected to the lower end of the movable cylinder (43), and a fourth duckbill valve (46) is fixedly connected to the inner side of the first insertion tube (44).
2. The multi-stage impregnation, drying, and soaking apparatus for producing impregnated canvas according to claim 1, characterized in that: The winding and drying assembly (1) includes a support plate (11). A drying box (12) and a receiving box (15) are fixedly connected to one side of the support plate (11) by bolts. An extrusion roller (13), a winding roller (14) and a feeding roller (16) are rotatably connected to the inside of the support plate (11). The receiving box (15) is located at the lower end of the drying box (12) and the extrusion roller (13).
3. The multi-stage impregnation, drying, and soaking apparatus for producing impregnated canvas according to claim 2, characterized in that: A crossbeam (17) is fixedly connected to one side of the support plate (11), and an electric hydraulic cylinder (18) is fixedly connected to the inside of the crossbeam (17). The piston rod end of the electric hydraulic cylinder (18) is fixedly connected to the top of the central box (31).
4. The multi-stage impregnation, drying, and soaking apparatus for producing impregnated canvas according to claim 1, characterized in that: The storage assembly (2) includes a cover plate (21), a feed cylinder (22) is fixedly connected to the top of the cover plate (21), a storage box (23) is fixedly connected to the bottom of the cover plate (21), a lower opening (24) is opened at the lower end of the storage box (23), a hose (25) is fixedly connected to the lower end of the storage box (23), and the inner side of the cover plate (21) communicates with the inner side of the hose (25).
5. The multi-stage impregnation, drying, and soaking apparatus for producing impregnated canvas according to claim 4, characterized in that: The bottom end of the hose (25) is fixedly connected to the top end of the movable cylinder (43), the inner side of the hose (25) is connected to the inner side of the movable cylinder (43), the bottom end of the cover plate (21) near the lower opening (24) is fixedly connected to the top end of the pre-storage cylinder (34), and the inner side of the pre-storage cylinder (34) is connected to the inner side of the storage box (23) through the lower opening (24).
6. The multi-stage impregnation, drying, and soaking apparatus for producing impregnated canvas according to claim 1, characterized in that: The waste removal assembly (5) includes a first drain pipe (51), a third duckbill valve (52) is fixedly connected to the lower end of the first drain pipe (51), the inner side of the first drain pipe (51) is slidably engaged with the outer side of the second drain pipe (53), a second insertion tube (54) is fixedly connected to the bottom end of the second drain pipe (53), a second rubber ring (55) is fixedly connected to the lower end of the second drain pipe (53), and a drain outlet (56) is opened at the upper end of the second drain pipe (53). The drain outlet (56) communicates with the inner side of the second drain pipe (53), and the outer side of the second rubber ring (55) is in contact with the inner side of the first drain pipe (51).
7. The multi-stage impregnation, drying, and soaking apparatus for producing impregnated canvas according to claim 6, characterized in that: The upper end of the second drain pipe (53) is fixedly connected to the ear seat (32) on the left end. The two ear seats (32) are distributed and fixed on the left and right sides of the collection box (31). The bottom end of the first drain pipe (51) is fixedly connected to the side tube (65) on the left end.
8. The multi-stage impregnation, drying, and soaking apparatus for producing impregnated canvas according to claim 1, characterized in that: The adhesive application assembly (6) includes a discharge block (61), a discharge groove (62) is provided on the inner side of the discharge block (61), a glue collection shell (63) is fixedly connected to the bottom end of the discharge block (61), and an upper opening (64) is provided on the upper end of the glue collection shell (63).
9. The multi-stage impregnation, drying, and soaking apparatus for producing impregnated canvas according to claim 7, characterized in that: The side cylinders (65) are distributed and fixed on the left and right sides of the glue collection shell (63). The side cylinders (65) have folded channels (66) on their inner sides. The side cylinders (65) are fixedly connected to the support plate (11). The folded channels (66) are connected to the inner side of the glue collection shell (63). The folded channels (66) at the left end are connected to the inner side of the first drain pipe (51). The folded channels (66) at the right end are connected to the inner side of the fixed cylinder (41). The top end of the side cylinders (65) at the right end is fixedly connected to the bottom end of the fixed cylinder (41).
10. A method of using the multi-stage impregnation, drying, and dipping apparatus for producing impregnated canvas according to any one of claims 1-9, characterized in that: Step 1: Before impregnation, the canvas led out by the feeding roller (16) passes between the discharge block (61) and the extension tube (38), and the canvas is attached to the top of the discharge block (61). It is led out between the two extrusion rollers (13). The two extrusion rollers (13) extrude the impregnated canvas. The canvas passes through the inside of the drying box (12). The drying box (12) is equipped with heating wires and fans. The drying box (12) dries the impregnated canvas. The canvas is wrapped and fixed on the outside of the take-up roller (14). The glue is filled into the cover plate (21) through the feed cylinder (22). The glue will flow into the pre-storage cylinder (34) through the lower opening (24). The glue will flow into the movable cylinder (43) through the hose (25). The first duckbill valve (37) and the fourth duckbill valve (46) are closed. Step 2: During impregnation, the electric hydraulic cylinder (18) is activated to drive the central box (31) to move up and down in a circular motion. The central box (31) drives the guide cylinder (33) to move. The central box (31) drives the movable cylinder (43) to move through the ear seat (32). When the guide cylinder (33) moves up and down, it will drive the expansion plate (36) to move. The expansion plate (36) slides inside the pre-storage cylinder (34). A rubber sealing ring is fixedly connected to the outside of the expansion plate (36). A rubber seal is fixedly connected to the inner side of the lower end of the pre-storage cylinder (34). When the expansion disk (36) moves upward, a negative pressure is generated inside the pre-storage cylinder (34) at the lower end of the expansion disk (36). The valve port at the lower end of the first duckbill valve (37) is opened under pressure. The glue at the upper end of the expansion disk (36) will enter the lower end of the expansion disk (36) through the inside of the first duckbill valve (37). When the guide cylinder (33) and the expansion disk (36) move downward, the glue at the lower end of the expansion disk (36) enters the inside of the guide cylinder (33) through the discharge port (35). The guide cylinder (33) enters the inside of the collection box (31). Step 3: At the same time, when the movable cylinder (43) moves upward, the space inside the fixed cylinder (41) between the fourth duckbill valve (46) and the second duckbill valve (42) is under negative pressure. The second duckbill valve (42) closes and the fourth duckbill valve (46) is opened under pressure. The first rubber ring (45) seals the movable cylinder (43) and the fixed cylinder (41). The glue inside the movable cylinder (43) enters the fixed cylinder (41) through the fourth duckbill valve (46). The movable cylinder (43) moves downward. The fourth duckbill valve (46) closes and the second duckbill valve (42) is opened under pressure. The glue inside the fixed cylinder (41) is squeezed out. The glue will enter the folded channel (66) and the glue collection shell (63). The glue collection shell (63) collects the glue. The upper opening (64) enters the discharge trough (62). The glue is squeezed out and contacts the canvas. Step 4: During cleaning, the electric hydraulic cylinder (18) controls the central box (31) to move continuously downwards. The extension tube (38) is aligned vertically with the discharge trough (62). The extension tube (38) will be inserted into the discharge trough (62). The bottom end of the central box (31) is attached to the top end of the discharge block (61). A rubber pad is fixed at the bottom end of the central box (31). The rubber pad seals the discharge block (61) and the central box (31). When the guide tube (33) continues to move downwards, the first insertion tube (44) will be inserted into the interior of the second duckbill valve (42). The valve port at the lower end of the second duckbill valve (42) is deformed by pressure. The second insertion tube (54) Insert the third duckbill valve (52) into the inside. The valve port of the third duckbill valve (52) is also opened. The water pump pipe is inserted into the feed cylinder (22) and sealed. The water pump delivers water into the cover plate (21). The water enters the pre-storage cylinder (34) and opens the first duckbill valve (37). The outlet (35) enters the guide cylinder (33). The inner channel (39) enters the discharge trough (62). The glue collection shell (63) mixes inside. The water enters the discharge trough (62) through the second extrusion assembly (4). The third duckbill valve (52) enters the second drain pipe (53). The drain outlet (56) flows out.