Aluminum vapor high-efficiency condensing and recycling device for aluminum-plated paper processing

Abstract

The application relates to the field of aluminum-plated paper processing technology, in particular to an aluminum vapor efficient condensation and recycling device for aluminum-plated paper processing, which comprises an evaporation cylinder and a top cover covering the top of the evaporation cylinder, further comprises a loading part and a scraping part, the scraping part is provided with a plurality of scraping parts which can rotate in the evaporation cylinder; when the scraping part is taken out from the evaporation cylinder, the scraping part is folded, the outer diameter is reduced, and the scraping part is separated from the inner wall of the evaporation cylinder; when the scraping part is put into the evaporation cylinder, the scraping part is unfolded, the outer diameter is increased, and the scraping part is abutted against the inner wall of the evaporation cylinder. By arranging the scraping part which can be folded and unfolded in the evaporation cylinder, the on-line continuous scraping of the sublimated aluminum film on the inner wall of the evaporation cylinder during the film plating process is realized, and accumulation of aluminum scale is avoided; the aluminum vapor is preferentially sublimated in the cylinder wall area with lower temperature, so that the aluminum scale can be conveniently scraped and recycled; by arranging the plug valve and the temporary storage chamber at the bottom, the recycled aluminum scale can be periodically discharged without damaging the vacuum environment of the evaporation cylinder.

Description

Technical Field

[0001] This invention relates to the field of aluminized paper processing technology, and in particular to a device for efficient condensation and recycling of aluminum vapor in aluminized paper processing. Background Technology

[0002] Vacuum-metallized paper, due to its excellent metallic luster, superior barrier properties, and recyclable and environmentally friendly characteristics, has been widely used in high-end packaging, decorative decoration, anti-counterfeiting labels, and functional composite materials. In the vacuum metallization process, aluminum wire, as the coating material, is placed in an evaporation boat or crucible and heated to above 1400℃, causing it to melt and evaporate, forming high-energy aluminum vapor. This aluminum vapor moves in a molecular flow in a vacuum environment, partially depositing onto the surface-treated paper substrate to form a uniformly thick metallized layer, giving the paper its metallic luster and barrier properties.

[0003] In actual production processes, the deposition efficiency of aluminum vapor faces a significant bottleneck. Studies show that only 60-80% of aluminum vapor can be effectively deposited on the target paper surface. The remaining 20-40% of aluminum vapor fails to collide with the paper substrate during its spatial movement and instead escapes into the vacuum chamber, eventually sublimating on non-target surfaces such as the vacuum chamber walls, anti-fouling plates, baffles, and shielding covers, forming a dense aluminum scale layer. This phenomenon is particularly prominent in continuous coating production; as production time increases, the aluminum scale gradually thickens, leading to a series of interconnected technical problems.

[0004] As the coating process continues, the aluminum scale on the inner wall of the vacuum chamber thickens. Once the scale reaches a certain thickness, it alters the thermal radiation characteristics inside the vacuum chamber, affecting the temperature stability of the evaporation source. Furthermore, the aluminum scale may experience internal stress concentration under thermal stress, causing it to peel off from the substrate surface and form floating aluminum shavings. These shavings, once they fall into the coating area, directly contaminate the surface of the paper being coated, causing defects such as pinholes, white spots, and scratches, leading to product scrap. To avoid such quality problems, manufacturers must periodically shut down the machine and manually clean the vacuum chamber. This cleaning process not only consumes significant manpower and time but also disrupts the vacuum environment. Re-vacuuming to the working pressure can take anywhere from tens of minutes to several hours, depending on the volume of the vacuum chamber and the pumping capacity of the vacuum system. For continuous production lines, this periodic shutdown severely restricts the effective operating time of the equipment and reduces the output per unit time.

[0005] Vacuum coating equipment is typically equipped with high-vacuum devices such as oil diffusion pumps or molecular pumps, which require a high degree of cleanliness in the working medium. Escaping aluminum vapor may be partially drawn into the vacuum pump after multiple reflections within the vacuum chamber. The sublimation of aluminum vapor within the pump body can contaminate the pump oil, increasing its saturated vapor pressure and reducing the ultimate vacuum level and pumping performance of the vacuum system. Furthermore, the deposition of solid aluminum particles on high-speed rotating components of the pump (such as the impeller of a molecular pump) can cause dynamic imbalance and even impeller damage. This deterioration in the vacuum system's performance, in turn, affects the coating quality, creating a vicious cycle.

[0006] Aluminum wire, as a coating raw material, is highly susceptible to market fluctuations. 20-40% of aluminum vapor fails to deposit effectively on the target substrate, meaning a significant amount of aluminum material is wasted. In large-scale continuous production, this material loss translates into direct economic losses, significantly increasing the material cost per unit product. From a resource utilization efficiency perspective, aluminum, as a metallic resource, consumes substantial energy in its mining and smelting processes; the low deposition efficiency in the coating process contradicts the industrial orientation of energy conservation and emission reduction.

[0007] These escaped aluminum vapors not only waste aluminum materials but also cause a series of problems: aluminum scale deposited on the inner wall of the vacuum chamber requires periodic shutdowns for cleaning, affecting production efficiency; excessively thick aluminum scale buildup may peel off, contaminating the paper being coated; aluminum vapor sucked into the vacuum pump can damage the pump oil, shortening the equipment's lifespan. Furthermore, the cleaning process requires disrupting the vacuum environment, and re-vacuuming is time-consuming and energy-intensive. Therefore, how to achieve efficient online condensation and recovery of aluminum vapor to prevent aluminum scale accumulation while maintaining the continuous coating process is a pressing technical problem that needs to be solved in this field. Summary of the Invention

[0008] The main objective of this invention is to provide an efficient aluminum vapor condensation and recycling device for metallized paper processing, in order to solve the problems raised in related technologies.

[0009] To achieve the above objectives, according to one aspect of the present invention, an efficient aluminum vapor condensation and recycling device for metallized paper processing is provided, comprising a vapor deposition cylinder and a top cover covering the top of the vapor deposition cylinder, and further comprising:

[0010] The loading section, located inside the vapor deposition cylinder, is used to hold the paper.

[0011] The vessel includes several scraping sections, each located above the interior of the vapor deposition cylinder. These sections can rotate horizontally within the cylinder to scrape away the deposited aluminum film on the upper part of the cylinder's inner wall. The scraping sections can also rotate vertically within the cylinder. When rotating upwards, the scraping sections unfold and press against the inner wall of the cylinder for scraping. When rotating downwards, the scraping sections retract and move away from the inner wall of the cylinder. When removed from the cylinder, the scraping sections retract, their outer diameter decreases, and they move away from the inner wall. When placed back into the cylinder, the scraping sections open, their outer diameter increases, and they press against the inner wall. Finally, when rotating horizontally within the cylinder, the scraping sections scrape away the deposited aluminum film on the inner wall of the cylinder.

[0012] The control circuit of the scraping section electric cylinder 57 includes a control circuit of the scraper electric cylinder 57 and a trigger component. The trigger component is used to control the scraper electric cylinder 57 to retract or extend. When the scraping section electric cylinder 57 is extended, the trigger component controls the scraper electric cylinder 57 to extend, allowing for scraping operations. When the scraping section electric cylinder 57 changes from a rotating state to a stopped state, the trigger component controls the scraper electric cylinder 57 to retract, reducing the width of the scraping section electric cylinder 57.

[0013] Furthermore, the lower surface of the top cover is also provided with a transmission part, and the scraping part is installed on the transmission part. The transmission part is used to drive the scraping part to rotate, thereby scraping off the aluminum film deposited on the inner wall of the vapor deposition cylinder. The transmission part includes a rotating shaft, an upper support ring is fixedly provided above the rotating shaft, and a lower support ring is fixedly provided at the bottom end. The lower support ring is connected to the loading part and is used to install the loading part inside the vapor deposition cylinder. A spring is sleeved on the outer ring of the rotating shaft, and the top end of the spring is fixedly connected to the upper support ring.

[0014] Furthermore, a support portion is also installed on the rotating shaft. The support portion includes a support ring and an inner support ring, which are fixedly connected by several support rods. The inner support ring is fixedly sleeved on the rotating shaft and located below the upper support ring. The bottom end of the spring is fixedly connected to the inner support ring. When the spring extends, it pushes the inner support ring downward, thereby causing the scraping part to rotate downward and close. When the support portion moves upward, the inner support ring causes the lower end of the spring to move upward, and the spring contracts, thereby causing the scraping part to rotate upward and open.

[0015] Furthermore, the scraping part includes an inner rod, with an outer rod fixedly attached to the outer end of the inner rod, and the inner end is hinged to the rotating shaft and located above the upper support ring; the inner rod can rotate up and down around the rotating shaft, and when the inner rod rotates upward, the scraping part unfolds, and when the inner rod rotates downward, the scraping part retracts.

[0016] Furthermore, a support rod is hinged at the fixed connection between the inner rod and the outer rod. The bottom end of the support rod is located on the inner support ring and is hinged to the inner support ring. When the inner support ring moves upward, it pushes the bottom end of the support rod to move upward, causing the top end of the support rod to rotate outward, thereby causing the inner rod to rotate upward. When the inner support ring moves downward, it pushes the bottom end of the support rod to move downward, causing the top end of the support rod to rotate inward, thereby causing the inner rod to rotate downward.

[0017] Furthermore, a scraper is provided on the outer side of the outer rod, with the blade facing outward. The scraper is used to scrape off the aluminum film deposited on the inner wall of the vapor deposition cylinder. When the scraping part is retracted, the scraper is retracted into the outer rod. When the scraping part is extended, the scraper extends out of the outer rod to perform scraping operations. A diagonal rod is fixedly provided at one end of the scraper near the outer rod. The diagonal rod is fixedly connected to the outer rod. The outer rod, the diagonal rod, and the scraper form a triangular area, which is used to maintain the stability of the scraper.

[0018] Furthermore, the loading unit includes a loading tray with several through-holes for heat dissipation. Several pressure rods are threadedly connected to the loading tray via threaded rods, and the pressure rods are used to fix the paper on the loading tray.

[0019] Furthermore, a nozzle and a lifting frame are fixedly provided at the bottom of the vapor deposition cylinder. The nozzle is connected to an aluminum vapor source on the outer wall through a pipe for spraying aluminum vapor into the vapor deposition cylinder. The lifting frame includes a lifting ring, which is located above and outside the nozzle. The lifting ring is fixed to the bottom of the vapor deposition cylinder by several uprights.

[0020] Furthermore, a cooling channel is provided in the upper side wall of the vapor deposition cylinder. The cooling channel is connected to an external cooling medium through a flexible hose. The cooling channel is used for the passage of the cooling medium, and the cooling medium in the cooling channel exchanges heat with the vapor deposition cylinder to reduce the temperature of the vapor deposition cylinder.

[0021] Furthermore, the bottom of the vapor deposition cylinder is provided with a discharge section, which includes an upper baffle valve and a lower baffle valve. Both the upper baffle valve and the lower baffle valve are located on the bottom plate of the vapor deposition cylinder. A temporary storage chamber is provided between the upper baffle valve and the lower baffle valve. A discharge port is opened at the bottom of the vapor deposition cylinder, and the discharge port is directly opposite the temporary storage chamber.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] By installing a trigger component at the bottom of the outer rod, the scraper extends and presses against the side wall of the vapor deposition cylinder when the outer rod is in a vertical or rotating state, enabling scraping operations. When the outer rod stops rotating, the scraper retracts into the outer rod and away from the side wall of the vapor deposition cylinder, facilitating the rotation and retraction of the outer rod. The retractable and expandable scraping section inside the vapor deposition cylinder enables continuous online scraping of the sublimated aluminum film on the inner wall of the cylinder during the coating process, preventing aluminum scale accumulation. A cooling channel located above the vapor deposition cylinder allows aluminum vapor to preferentially sublimate in the lower-temperature cylinder wall area, facilitating centralized scraping and recovery. A gate valve and temporary storage chamber at the bottom allow for the periodic discharge of recovered aluminum shavings without disrupting the vacuum environment of the vapor deposition cylinder. This solves the problems of material waste, equipment contamination, and the need for shutdown cleaning caused by aluminum vapor escape in related technologies. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the entire invention. Figure 1 ;

[0025] Figure 2 This is a schematic diagram of the entire invention. Figure 2 ;

[0026] Figure 3 This is a cross-sectional view of the present invention;

[0027] Figure 4 This is a cross-sectional view of the vapor deposition cylinder of the present invention;

[0028] Figure 5 This is a schematic diagram of the scraping section of the present invention in its unfolded state;

[0029] Figure 6 This is a schematic diagram of the scraping part of the present invention in a retracted state;

[0030] Figure 7 This is a schematic diagram of the transmission part and support part of the present invention;

[0031] Figure 8 This is a schematic diagram of the scraping section structure of the present invention;

[0032] Figure 9 This is a cross-sectional view of the loading section of the present invention;

[0033] Figure 10 This is a partially enlarged schematic diagram of the present invention. Figure 1 ;

[0034] Figure 11 This is a schematic diagram of the scraping section structure of the present invention;

[0035] Figure 12 This is a schematic diagram of the scraping section structure of the present invention;

[0036] Figure 13 This is a partially enlarged schematic diagram of the present invention. Figure 2 .

[0037] Figure label:

[0038] 1. Evaporation cylinder; 2. Top cover; 3. Discharge port; 4. Nozzle;

[0039] 5. Scraping section; 50. Ball bearing; 51. Inner rod; 52. Support rod; 53. Outer rod; 54. Diagonal rod; 55. Scraper; 56. Cavity; 57. Electric cylinder; 58. Guide plate; 59. Press switch;

[0040] 6. Loading section; 61. Loading tray; 62. Heat dissipation holes; 63. Pressure bar; 64. Knob; 65. Threaded rod; 66. Retaining ring;

[0041] 7. Lifting frame; 71. Lifting ring; 72. Upright pole;

[0042] 8. Transmission unit; 81. Rotating shaft; 82. Upper support ring; 83. Spring; 84. Lower support ring;

[0043] 9. Support section; 91. Support ring; 92. Inner support ring; 93. Support rod;

[0044] 11. Cooling passage; 12. Upper gate valve; 13. Temporary storage chamber; 14. Lower gate valve; 21. Motor. Detailed Implementation

[0045] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0046] This embodiment provides a device for efficient condensation and recycling of aluminum vapor in the processing of aluminized paper, such as... Figure 1 and Figure 2 As shown, the device includes a vapor deposition cylinder 1 and a top cover 2 that is detachably fitted onto the top of the vapor deposition cylinder 1. Inside the top cover 2, at its lower interior, is a loading section 6 for holding paper and a scraping section 5 for scraping away the deposited aluminum film from the inner wall of the vapor deposition cylinder 1. A motor 21 is also fixedly installed inside the top cover 2. The output shaft of the motor 21 is connected to a transmission section 8, which will be described later, to provide rotational power.

[0047] A nozzle 4 is fixedly installed at the bottom of the vapor deposition cylinder 1. This nozzle 4 is connected to an external aluminum vapor source and is used to spray aluminum vapor into the vapor deposition cylinder 1, thereby vapor-depositing the paper on the loading section 6 to form aluminum-coated paper. Above the nozzle 4, a lifting ring 71 is fixedly installed on the outside by several uprights 72. These uprights 72 and the lifting ring 71 together constitute the lifting frame 7. The lifting ring 71 is used to cooperate with the subsequent support section 9 to realize the opening and closing of the scraping section 5.

[0048] A cooling channel 11 is provided inside the upper side wall of the vapor deposition cylinder 1. This cooling channel 11 is connected to an external cold source, allowing a continuous supply of refrigerant. The function of the cooling channel 11 is to maintain a lower temperature on the upper part of the cylinder wall of the vapor deposition cylinder 1, thereby guiding aluminum vapor to preferentially sublimate in this area, facilitating subsequent concentrated scraping. Positioning the cooling channel 11 above the side wall of the vapor deposition cylinder 1 also aims to reduce the impact on the temperature of the aluminum vapor near the bottom nozzle 4, ensuring the quality of the coating.

[0049] like Figure 3 , Figure 4 and Figure 6 As shown, a transmission part 8 is provided below the top cover 2. Figure 7 As shown, the transmission unit 8 includes a vertically arranged rotating shaft 81. The top end of the rotating shaft 81 is rotatably connected to the top cover 2 and fixedly connected to the output shaft of the motor 21, and is driven to rotate by the motor 21. An upper support ring 82 is fixedly provided above the rotating shaft 81, and a lower support ring 84 is fixedly provided at the bottom end. The lower support ring 84 is used to connect to the loading unit 6. A spring 83 is fitted around the outer ring of the rotating shaft 81, and the top end of the spring 83 is fixedly connected to the upper support ring 82.

[0050] like Figure 5 and Figure 6 As shown, a support portion 9 is also installed on the rotating shaft 81. The support portion 9 includes a support ring 91 and an inner support ring 92, which are fixedly connected by several support rods 93 to form a whole. The inner support ring 92 is slidably sleeved on the rotating shaft 81 and located below the upper support ring 82. A key or spline structure is provided between the inner support ring 92 and the rotating shaft 81, so that it can slide along the axial direction of the rotating shaft 81 and rotate synchronously with the rotating shaft 81. The bottom end of the aforementioned spring 83 is fixedly connected to the inner support ring 92. Several ball bearings are rotatably provided on the lower surface of the support ring 91 to reduce the friction when in contact with the lifting ring 71.

[0051] like Figure 5 and Figure 6 As shown, there are three scraping sections 5, evenly distributed along the circumference, all mounted on the transmission section 8. Figure 8 As shown, each scraping section 5 includes an inner rod 51, the inner end of which is hinged to a rotating shaft 81 and located above the upper support ring 82. An outer rod 53 is fixedly connected to the outer end of the inner rod 51. A support rod 52 is hinged at the fixed connection between the inner rod 51 and the outer rod 53, and the bottom end of the support rod 52 is hinged to an inner support ring 92. Figure 11 As shown, a scraper 55 is provided on the outer side of the outer rod 53, with the blade of the scraper 55 facing outwards, for contacting and scraping off the sublimated aluminum film on the inner wall of the vapor deposition cylinder 1. The blade of the scraper 55 is coated with a diamond-like carbon (DLC) coating to prevent aluminum shavings from adhering. To improve the installation stability of the scraper 55, a diagonal rod 54 is also fixedly provided at one end of the scraper 55 near the outer rod 53, and the other end of the diagonal rod 54 is fixedly connected to the outer rod 53 to form a triangular support structure.

[0052] To facilitate the retraction or expansion of the scraping section 5, the scraper 55 rotates downward from its state of pressing against the inner wall of the vapor deposition cylinder 1, and the scraper 55 rotates upward to press against the inner wall of the vapor deposition cylinder 1. The top of the scraper 55 is designed to be arc-shaped to provide space for the scraper 55 to rotate.

[0053] like Figure 12 As shown, the outer rod 53 has a cavity 56 for accommodating the scraper 55. A through groove is provided on the outward side of the outer rod 53, which communicates with the cavity 56. The scraper 55 can slide in the through groove and enter or exit the outer rod 53. Several electric cylinders 57 are fixedly installed on the inner wall of the outer rod 53. The cylinder body of the electric cylinder 57 is fixedly connected to the side wall of the outer rod 53, and the piston rod is fixedly connected to the scraper 55. When the piston rod of the electric cylinder 57 extends, it pushes the scraper 55 out of the through groove and presses the scraper 55 against the side wall of the vapor deposition cylinder 1, making it easier to scrape off the aluminum film on the side wall of the vapor deposition cylinder 1. When the piston rod of the electric cylinder 57 shortens, it pulls the scraper 55 from the through groove into the cavity 56, making it easier for the outer rod 53 to rotate downward and leave the side wall of the vapor deposition cylinder 1.

[0054] To ensure that the scraper 55 retracts into or extends out of the outer rod 53 as the scraping section 5 retracts or expands, a trigger assembly is provided at the bottom of the outer rod 53. The trigger assembly includes a guide plate 58 fixedly mounted at the bottom of the cavity 56. The upper surface of the guide plate 58 is designed as a slightly concave slope towards the center, with the center of the guide plate 58 being the lowest point. A push-button switch 59 is located at the lowest point, connected to the control circuits of all electric cylinders 57 for controlling the opening and closing of the electric cylinders 57. A ball 50 is placed on the guide plate 58. The mass of the ball 50 is designed so that when it presses against the push-button switch 59, it triggers the push-button switch 59.

[0055] The slope of the upper surface of the guide plate 58 is also designed and determined. When the outer rod 53 is in a horizontal state, the ball 50 rolls along the slope to the lowest point of the center of the guide plate 58 and triggers the push switch 59. When the outer rod 53 is tilted, the ball 50 leaves the lowest point of the center of the guide plate 58 and no longer presses the push switch 59.

[0056] like Figure 9 and Figure 10As shown, the loading unit 6 includes a disc-shaped loading tray 61, which is fixedly mounted on the lower support ring 84 and can rotate together with the rotating shaft 81. The loading tray 61 has several through-holes 62 for heat dissipation, which helps dissipate heat during the coating process, keeps the temperature on both sides of the paper balanced, and prevents deformation. The loading tray 61 has two pressure rods 63 for fixing the paper to the tray 61. Both ends of each pressure rod 63 are rotatably connected to a threaded rod 65, allowing the pressure rod 63 to rotate freely relative to the threaded rod 65. The threaded rod 65 is threadedly connected to a threaded hole on the loading tray 61. A retaining ring 66 is fixedly mounted at the top of the threaded rod 65, and a knob 64 is fixedly mounted at the bottom. The diameter of the retaining ring 66 is larger than the diameter of the threaded hole on the loading tray 61, preventing the threaded rod 65 from completely detaching from the loading tray 61. During operation, loosen the threaded rod 65 by turning knob 64, creating a gap between the pressure rod 63 and the loading tray 61. At this point, place the paper to be coated flat on the loading tray 61, ensuring the edge of the paper is below the pressure rod 63. Then tighten the threaded rod 65, causing it to move upwards and press the pressure rod 63 firmly onto the loading tray 61, thus securing the paper securely.

[0057] like Figure 3 and Figure 4 As shown, the bottom of the vapor deposition cylinder 1 is equipped with a discharge section for collecting and discharging scraped aluminum shavings. The discharge section includes an upper baffle valve 12 and a lower baffle valve 14, both of which are mounted on the bottom plate of the vapor deposition cylinder 1. A sealed temporary storage chamber 13 is formed between the upper baffle valve 12 and the lower baffle valve 14. A discharge port 3 is also provided at the bottom of the vapor deposition cylinder 1, which is directly below the temporary storage chamber 13. The bottom plate of the vapor deposition cylinder 1 has a certain slope, which is set in the direction of the upper baffle valve 12. The surface of the bottom plate is mirror polished and coated with a DLC coating to prevent aluminum shavings from adhering and reduce friction.

[0058] Initially, the upper baffle valve 12 is open, and the lower baffle valve 14 is closed. Aluminum shavings scraped off by the scraper 55 slide down the inclined base plate under gravity and fall into the storage chamber 13 through the open upper baffle valve 12. When aluminum shavings need to be discharged, the upper baffle valve 12 is closed first, isolating the storage chamber 13 from the high vacuum environment inside the vapor deposition cylinder 1. Then, the lower baffle valve 14 is opened, and the aluminum shavings in the storage chamber 13 fall from the discharge port 3 and are collected by the external collection container. After emptying, the lower baffle valve 14 is closed first, and then the upper baffle valve 12 is opened, allowing the storage chamber 13 to continue collecting aluminum shavings. Through the cooperation of the upper baffle valve 12 and the lower baffle valve 14, continuous or periodic discharge of aluminum shavings can be achieved without disrupting the vacuum environment inside the vapor deposition cylinder 1.

[0059] Once the paper is loaded, the scraper section 5 is in the retracted state, as shown below. Figure 6As shown, the outer rod 53 is in an inclined state, and the ball 50 leaves the lowest end of the guide plate 58, no longer pressing the switch 59. The top cover 2 is then placed on the vapor deposition cylinder 1. As the transmission part 8 descends with the top cover 2, the loading tray 61 first passes through the inner hole of the lifting ring 71. Subsequently, the support ring 91 of the support part 9 contacts the upper surface of the lifting ring 71. As the top cover 2 continues to descend, the lifting ring 71 pushes the support ring 91 upward. The support ring 91 drives the inner support ring 92 to overcome the elastic force of the spring 83 and slide upward along the rotating shaft 81 via the support rod 93. When the inner support ring 92 moves upward, it pushes the inner rod 51 and the outer rod 53 to rotate upward and unfold via the support rod 52, so that the outer rod 53 gradually comes into a vertical state and approaches the inner wall of the vapor deposition cylinder 1. After the outer rod 53 rotates to the vertical position, the ball 50, guided by the inclined surface of the guide plate 58, rolls to the push switch 59. Under its own weight, the push switch 59 is pressed, triggering the control circuit of the electric cylinder 57. The piston rod of the electric cylinder 57 extends, pushing the scraper 55 out of the cavity 56 and pressing it against the inner wall of the vapor deposition cylinder 1. When the top cover 2 is installed in place, the blade of the scraper 55 is pressed against the inner wall of the vapor deposition cylinder 1 with appropriate pressure, ready to perform the scraping work.

[0060] After the top cover 2 is installed in place, start the motor 21. The motor 21 drives the rotating shaft 81 to rotate, and the rotating shaft 81 drives the transmission part 8, support part 9, scraping part 5, and loading part 6, which are fixedly connected to it, to rotate together. When the outer rod 53 rotates, the centrifugal force generated causes the ball 50 to move outward along the inclined surface of the guide plate 58, away from the push switch 59, as... Figure 13 As shown. Because the support ring 91 has ball bearings at its bottom, the friction between it and the lifting ring 71 is minimal, so the rotation of the support ring 91 is almost unimpeded. As the rotating shaft 81 rotates, the scraper 55 on the scraping section 5 circumferentially scrapes the inner wall of the vapor deposition cylinder 1, continuously removing the aluminum film deposited on the cylinder wall. Due to the cooling channel 11, the upper part of the vapor deposition cylinder 1 has the lowest cylinder wall temperature, and aluminum vapor preferentially deposits in this area. Therefore, the scraper 55 is positioned directly opposite the side wall of the vapor deposition cylinder 1 with the cooling channel 11, allowing for efficient removal of the deposited aluminum film.

[0061] When it is necessary to remove the top cover 2 from the vapor deposition cylinder 1 to load and unload paper, first turn off the motor 21. The outer rod 53 will then stop rotating. The ball 50 will no longer be subject to centrifugal force and will roll along the inclined surface of the guide plate 58 to the lowest point in the middle of the guide plate 58 under its own gravity. Press the push switch 59 again to trigger the control circuit of the electric cylinder 57. The piston rod of the electric cylinder 57 will retract, pulling the scraper 55 into the cavity 56, leaving a certain gap between the outer rod 53 and the inner wall of the vapor deposition cylinder 1, which will facilitate the rotation and retraction of the outer rod 53. Lift the top cover 2 upwards. During the lifting process, the lifting ring 71, which was originally under the support ring 91, will gradually disengage from the support ring 91. At this time, the spring 83, which is in a compressed state, will lose its constraint and begin to rebound, pushing the inner support ring 92 to slide downwards along the rotating shaft 81. When the inner support ring 92 moves downwards, it will also drive the lower end of the support rod 52, which is hinged to it, to move downwards together. The upper end of the support rod 52 pulls the inner rod 51 and the outer rod 53 downward around the hinge point with the rotating shaft 81, causing the entire scraping part 5 to retract inward. After the scraping part 5 retracts, its maximum outer diameter becomes smaller, making it easy to remove from the vapor deposition cylinder 1, which facilitates the operator to load and unload the paper on the loading tray 61.

[0062] The aluminum shavings scraped off by scraper 55 fall onto the bottom plate of the vapor deposition cylinder 1 under gravity. Because the bottom plate has a slope towards the discharge section and its surface is mirror-polished and coated with DLC, the aluminum shavings slide towards the opened upper baffle valve 12 under gravity and fall into the temporary storage chamber 13. Through the aforementioned discharge section operation, the recovered aluminum shavings can be periodically discharged without disrupting the vacuum.

[0063] During the coating process, aluminum vapor is ejected from the nozzle 4 at the bottom to coat the surface of the paper as it rotates with the loading tray 61. The heat dissipation holes 62 on the loading tray 61 help dissipate heat from the back of the paper and prevent the paper from deforming due to uneven heating.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A high-efficiency aluminum vapor condensation and recycling device for aluminum-coated paper processing, comprising an evaporation cylinder (1) and a top cover (2) covering the top of the evaporation cylinder (1), characterized in that, Also includes: Loading section (6), which is located inside the vapor deposition cylinder (1) and is used to hold paper; The scraping section (5) comprises several parts, all located above the interior of the vapor deposition cylinder (1), and can rotate horizontally within the vapor deposition cylinder (1) to scrape off the deposited aluminum film on the inner wall of the vapor deposition cylinder (1). The scraping section (5) can also rotate vertically within the vapor deposition cylinder (1). When the scraping section (5) rotates upwards, it unfolds and abuts against the inner wall of the vapor deposition cylinder (1) for scraping operations. When the scraping section (5) rotates downwards, the… The scraping part (5) retracts and leaves the inner wall of the vapor deposition cylinder (1); when the scraping part (5) is taken out from the vapor deposition cylinder (1), the scraping part (5) retracts, the outer diameter becomes smaller, and it leaves the inner wall of the vapor deposition cylinder (1); when the scraping part (5) is put into the vapor deposition cylinder (1), the scraping part (5) opens, the outer diameter becomes larger, and it abuts against the inner wall of the vapor deposition cylinder (1); when the scraping part (5) rotates horizontally in the vapor deposition cylinder (1), it is used to scrape off the aluminum film deposited on the inner wall of the vapor deposition cylinder (1); The scraping section (5) includes a scraper (55) and a triggering component. The triggering component is used to control the scraper (55) to retract or extend from the scraping section (5). When the scraping section (5) is extended, the triggering component controls the scraper (55) to extend from the scraping section (5) to perform scraping operations. When the scraping section (5) changes from a rotating state to a stopped state, the triggering component controls the scraper (55) to retract from the scraping section (5) to reduce the width of the scraping section (5).

2. The high-efficiency condensation and recycling device for aluminum vapor in aluminized paper processing according to claim 1, characterized in that, The lower surface of the top cover (2) is also provided with a transmission part (8), and the scraping part (5) is installed on the transmission part (8). The transmission part (8) is used to drive the scraping part (5) to rotate, thereby scraping off the aluminum film deposited on the inner wall of the vapor deposition cylinder (1). The transmission part (8) includes a rotating shaft (81), an upper support ring (82) is fixedly provided above the rotating shaft (81), and a lower support ring (84) is fixedly provided at the bottom end. The lower support ring (84) is connected to the loading part (6) and is used to install the loading part (6) inside the vapor deposition cylinder (1). A spring (83) is sleeved on the outer ring of the rotating shaft (81), and the top end of the spring (83) is fixedly connected to the upper support ring (82).

3. The high-efficiency condensation and recycling device for aluminum vapor in aluminized paper processing according to claim 2, characterized in that, A support part (9) is also installed on the rotating shaft (81). The support part (9) includes a support ring (91) and an inner support ring (92). The support ring (91) and the inner support ring (92) are fixedly connected by several support rods (93). The inner support ring (92) is fixedly sleeved on the rotating shaft (81) and located below the upper support ring (82). The bottom end of the spring (83) is fixedly connected to the inner support ring (92). When the spring (83) extends, it pushes the inner support ring (92) to move down, thereby causing the scraping part (5) to rotate downward and close. When the support part (9) moves upward, the inner support ring (92) drives the lower end of the spring (83) to move upward, and the spring (83) contracts, thereby causing the scraping part (5) to rotate upward and open.

4. The high-efficiency condensation and recycling device for aluminum vapor in aluminized paper processing according to claim 3, characterized in that, The scraping part (5) includes an inner rod (51), with an outer rod (53) fixedly provided at the outer end of the inner rod (51), and the inner end is hinged to the rotating shaft (81) and located above the upper support ring (82); the inner rod (51) can rotate up and down around the rotating shaft (81). When the inner rod (51) rotates upward, the scraping part (5) unfolds, and when the inner rod (51) rotates downward, the scraping part (5) retracts.

5. The high-efficiency condensation and recycling device for aluminum vapor in aluminized paper processing according to claim 4, characterized in that, A support rod (52) is hinged at the fixed connection between the inner rod (51) and the outer rod (53). The bottom end of the support rod (52) is located on the inner support ring (92) and is hinged to the inner support ring (92). When the inner support ring (92) moves upward, it pushes the bottom end of the support rod (52) to move upward, causing the top end of the support rod (52) to rotate outward, thereby causing the inner rod (51) to rotate upward. When the inner support ring (92) moves downward, it pushes the bottom end of the support rod (52) to move downward, causing the top end of the support rod (52) to rotate inward, thereby causing the inner rod (51) to rotate downward.

6. The high-efficiency condensation and recycling device for aluminum vapor in aluminized paper processing according to claim 4, characterized in that, A scraper (55) is provided on the outside of the outer rod (53), with the blade of the scraper (55) facing outward. The scraper (55) is used to scrape off the aluminum film deposited on the inner wall of the vapor deposition cylinder (5). When the scraping part (5) is retracted, the scraper (55) is retracted into the outer rod (53). When the scraping part (5) is unfolded, the scraper (55) extends out of the outer rod (53) and can be used for scraping. A diagonal bar (54) is fixedly provided at one end of the scraper (55) near the outer rod (53). The diagonal bar (54) is fixedly connected to the outer rod (53). The outer rod (53), the diagonal bar (54) and the scraper (55) form a triangular area. The triangular area is used to maintain the stability of the scraper (55).

7. The high-efficiency condensation and recycling device for aluminum vapor in aluminized paper processing according to claim 1, characterized in that, The loading unit (6) includes a loading tray (61), which has several through heat dissipation holes (62). Several pressure rods (63) are threadedly connected to the loading tray (61) via threaded rods (65). The pressure rods (63) are used to fix the paper on the loading tray (61).

8. The high-efficiency condensation and recycling device for aluminum vapor in aluminized paper processing according to claim 1, characterized in that, The bottom of the vapor deposition cylinder (1) is fixedly provided with a nozzle (4) and a lifting frame (7). The nozzle (4) is connected to an aluminum vapor source on the outer wall through a pipe and is used to spray aluminum vapor into the vapor deposition cylinder (1). The lifting frame (7) includes a lifting ring (71). The lifting ring (71) is located outside the nozzle (4) and is fixed to the bottom of the vapor deposition cylinder (1) by several uprights (72).

9. The high-efficiency condensation and recycling device for aluminum vapor in aluminized paper processing according to claim 1, characterized in that, The vapor deposition cylinder (1) is provided with a cooling channel (11) on the upper side wall. The cooling channel (11) is connected to the external cooling medium through a hose. The cooling channel (11) is used for the passage of the cooling medium. The cooling medium in the cooling channel (11) exchanges heat with the vapor deposition cylinder (1) to reduce the temperature of the vapor deposition cylinder (1).

10. The high-efficiency condensation and recycling device for aluminum vapor in metallized paper processing according to claim 1, characterized in that, The bottom of the vapor deposition cylinder (1) is provided with a discharge section, which includes an upper baffle valve (12) and a lower baffle valve (14). The upper baffle valve (12) and the lower baffle valve (14) are both located on the bottom plate of the vapor deposition cylinder (1). A temporary storage chamber (13) is provided between the upper baffle valve (12) and the lower baffle valve (14). The bottom of the vapor deposition cylinder (1) is provided with a discharge port (3), which is directly opposite the temporary storage chamber (13).

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