Novel evaporation boat

Abstract

The invention provides a technical scheme of a novel evaporation boat, relates to the technical field of evaporation boats, and is characterized in that the novel evaporation boat comprises a working box, a rolling part is mounted on the working box, a cylindrical evaporation boat is rotatably mounted in the working box, and a driving motor is mounted on the working box; an output shaft of the driving motor is connected with the cylindrical evaporation boat, two annular partition plates are symmetrically arranged in the cylindrical evaporation boat and connected through a heating wire, electrode holders are installed on the sides, away from the heating wire, of the two annular partition plates, and two feeding assemblies are symmetrically arranged on the working box. The feeding assembly conveys molten aluminum liquid to the cylindrical evaporation boat, the driving motor drives the evaporation boat to rotate, the electrode holder is connected with the heating wire for heating, the molten aluminum liquid is evaporated, film coating is completed, distribution and heating of the aluminum liquid can be more uniform, and the film coating efficiency and the film coating uniformity are improved.

Description

Technical Field

[0001] The invention relates to the technical field of evaporation boats, in particular to a novel evaporation boat. Background Art

[0002] In the application of lithium-ion batteries, the current collector is a key component, which mainly carries the electrode material and conducts electrons. The composite current collector adopts a three-layer composite structure of "metal-polymer material-metal", which has many advantages such as low cost, high safety, high specific energy and long life. It is a new type of composite material made of polymer materials such as PET / PP as the base film, and forms nano-scale metal on the surface of the polymer base film by vacuum evaporation, magnetron sputtering and other methods. Among them, vacuum evaporation refers to a process method in which a certain heating evaporation method is used under vacuum conditions to vaporize and evaporate the coating material, and the particles fly to the surface of the substrate and condense into a film. For composite aluminum current collectors, vacuum evaporation is generally used. In the aluminum evaporation process, the carrier of aluminum evaporation has always been a production difficulty with extremely high cost and difficult operation. The mainstream carriers in the industry are graphite or metal crucibles and ceramic evaporation boats. Since the evaporation boat has the advantages of easy operation and low cost, it has broad development prospects.

[0003] At present, in the actual production process, there will be problems such as aluminum splashing, uneven coating, and serious loss of evaporation boat. Among them, the aluminum splashing phenomenon will cause aluminum metal convex points on the membrane surface, and even burn through the base film to form pinholes in severe cases. The impact of aluminum splashing points is mainly on the battery end. First, when the pole piece is coated, the aluminum metal convex points will form scratches on the coating surface and even cause the belt to break. Second, the metal convex points and perforations in the rolling process will cause a large difference in extension between the defective area and the surrounding position under high pressure, causing rolling belt breakage under the tension of the belt. Third, the aluminum metal particles splashed on the membrane are in direct contact with the diaphragm inside the battery, which can easily cause the diaphragm to be punctured, increase the short-circuit rate of the process, and cause the risk of self-discharge. This is mainly because the traditional rectangular evaporation boat is prone to uneven distribution of molten aluminum and uneven heating of the evaporation boat. Summary of the invention

[0004] The object of the present invention is to provide a novel evaporation boat to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: the new evaporation boat includes a working box, a roll-feeding piece is installed on the working box, two rotating holes are symmetrically opened on the working box, rotating cylinders are rotatably installed on the two rotating holes, a mounting plate is installed on the working box, a driving motor is installed on the mounting plate, the output shaft of the driving motor is connected to a rotating cylinder, the two rotating cylinders are connected through a cylindrical evaporation boat, two annular partitions are symmetrically arranged in the cylindrical evaporation boat, the two annular partitions are connected through a heating wire, and electrode seats are installed on the side of the two annular partitions away from the heating wire, and two feeding assemblies are symmetrically arranged on the working box.

[0006] As a preferred technical solution, the cylindrical evaporation boat is made of ceramic with high thermal conductivity, the bottom diameter of the cylindrical evaporation boat is 1 cm-8 cm, and the height of the cylinder is 5 cm-20 cm.

[0007] As a preferred technical solution, the outer surface of the cylindrical evaporation boat is provided with diamond patterns, the side length of the diamond is 0.5cm-2.5cm, the angle between the sides of the diamond is smaller than the diagonal angle of 20°-90°, the depth of the diamond patterns is 0.1mm-2mm, and each diamond is arranged in sequence on the outer surface of the cylindrical evaporation boat.

[0008] As a preferred technical solution, flow-blocking strips are provided at both ends of the diamond-shaped pattern, and the depth of the flow-blocking strips is consistent with that of the diamond-shaped pattern.

[0009] As a preferred technical solution, the feed assembly includes a feed box, a heating baffle, a conveyor, a melt pipeline and a valve assembly;

[0010] Two feed boxes are symmetrically installed on the working box, and two heating partitions are installed in the two feed boxes. A conveyor is installed at the bottom of the feed box, and a melt pipe is installed at the output port of the conveyor. The melt pipe extends into the working box. A valve assembly is installed at the end of the melt pipe, and the valve assembly is suspended just above the choke belt.

[0011] As a preferred technical solution, the valve assembly includes a valve body, a mounting hole, a pressure spring, a support spring, a flow-blocking ball, a limit ring, a heat-conducting hole and a heat-conducting rod;

[0012] A valve body is installed at the end of the molten body pipeline, and a mounting hole is provided in the valve body. A pressure spring is installed in the upper part of the mounting hole, and a support spring is installed in the lower part of the mounting hole. The pressure spring and the support spring are connected through a baffle ball. A heat conduction hole is provided on the valve body, and a heat conduction rod is installed in the heat conduction hole. One end of the heat conduction rod is in contact with the cylindrical evaporation boat, and the other end is in contact with the pressure spring. A limit ring is installed in the upper part of the mounting hole, and a sensor is installed at the lower end of the limit ring. The sensor is electrically connected to the conveyor, and the conveyor is electrically connected to the drive motor.

[0013] As a preferred technical solution, the elastic potential energy of the pressure spring decreases as the temperature increases.

[0014] As a preferred technical solution, a cleaning assembly is provided in the working box, and the cleaning assembly obtains power from the rotation of the cylindrical evaporation boat. The cleaning assembly includes a driving gear, a transmission gear, a driven gear, a transmission rod, a slide groove, a reciprocating screw, a support rod, a connecting rod, an upper cleaning rod group, a lower cleaning rod group, a cleaning scraper and a collection frame;

[0015] A driving gear is installed on a rotating column close to the driving motor side, and the driving gear is located in a working box. A transmission gear and a driven gear are rotatably installed on the working box, and the transmission gear is meshed with the driving gear and the driven gear. A transmission rod is installed on the driven gear, and a slide groove is installed inside the working box. The transmission rod extends into the slide groove from one end of the slide groove, and a support rod is rotatably installed on the other end of the slide groove. The support rod and the transmission rod are connected by a reciprocating screw, and a connecting rod is slidably installed on the reciprocating screw, and an upper cleaning rod group and a lower cleaning rod group are installed on the connecting rod, and a cleaning scraper is installed in the working box, and the cleaning scraper is located below the cylindrical evaporation boat and is tangent to the outer surface of the cylindrical evaporation boat. A collecting frame is installed at the lower part of the working box.

[0016] As an optimal technical solution, the cleaning rods at the ends of the upper cleaning rod group and the lower cleaning rod group extend into the diamond-shaped patterns, and the number of cleaning rods at the ends of the lower cleaning rod group of the upper cleaning rod group is consistent with the number of diamonds arranged laterally, and the single sliding stroke of the connecting rod on the reciprocating screw is half the distance between the two farther vertices of the diamond.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The use of a new cylindrical evaporation boat can make the distribution and heating of the aluminum liquid more uniform, improve the coating efficiency and uniformity, and use internal heating of the cylindrical evaporation boat to make full use of the heat source, avoiding the waste of heat energy caused by single-sided heating of the traditional rectangular evaporation boat, which can save resources.

[0019] 2. By setting up the feeding assembly, the accumulation of impurities and aluminum slag on the surface of the evaporation boat can be effectively reduced, the service life of the evaporation boat can be extended, and at the same time, the preheating of the cylindrical evaporation boat can be ensured to be complete, reaching a temperature that can evaporate the aluminum liquid, and ensuring the normal progress of the coating operation.

[0020] 3. By setting up the cleaning component, the diamond pattern can be cleaned to avoid the accumulation of aluminum liquid and affect the coating efficiency. The surface of the cylindrical evaporation boat can be cleaned to avoid the aluminum liquid from damaging the cylindrical evaporation boat, extend the service life of the cylindrical evaporation boat, and avoid the uneven distribution of aluminum liquid affecting the coating quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention from a first viewing angle;

[0022] Figure 2 is a schematic diagram of a cover-removing structure from a first viewing angle of the present invention;

[0023] Figure 3 It is a schematic diagram of a first cutaway structure of the present invention;

[0024] Figure 4 It is a second cross-sectional structural schematic diagram of the present invention;

[0025] Figure 5 It is a schematic structural diagram of the first viewing angle of the third section of the present invention;

[0026] Figure 6 It is a schematic structural diagram of the second viewing angle of the third section of the present invention;

[0027] Figure 7 It is a schematic diagram of the structure of the evaporation boat components of the present invention;

[0028] Figure 8 It is a schematic diagram of the front view structure of the evaporation boat of the present invention;

[0029] Fig. 9 For the present invention Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0030] In the figure: 1, working box; 2, roll-feeding part; 3, base film; 4, rotating hole; 5, mounting plate; 6, driving motor; 7, rotating column; 8, cylindrical evaporation boat; 9, annular partition; 10, electrode seat; 11, heating wire; 12, diamond pattern; 13, flow blocking belt;

[0031] 14. Feeding assembly; 1401. Feeding box; 1402. Heating baffle; 1403. Conveyor; 1404. Melt pipe;

[0032] 1405, valve assembly; 1405a, valve body; 1405b, mounting hole; 1405c, pressure spring; 1405d, support spring; 1405e, flow control ball; 1405f, limit ring; 1405g, heat conduction hole; 1405h, heat conduction rod;

[0033] 15. Cleaning assembly; 1501. Driving gear; 1502. Transmission gear; 1503. Driven gear; 1504. Transmission rod; 1505. Slide; 1506. Reciprocating screw; 1507. Support rod; 1508. Connecting rod; 1509. Upper cleaning rod group; 1510. Lower cleaning rod group; 1511. Cleaning scraper; 1512. Collection frame. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example: Figure 1-Figure 6 As shown, the present invention provides a new evaporation boat technical solution, characterized in that: the new evaporation boat comprises a working box 1, a coil feeding member 2 is installed on the working box 1, two rotating holes 4 are symmetrically opened on the working box 1, and rotating columns 7 are rotatably installed on the two rotating holes 4, a mounting plate 5 is installed on the working box 1, and a driving motor 6 is installed on the mounting plate 5, and the output shaft of the driving motor 6 is connected to a rotating column 7, and the two rotating columns 7 are connected through a cylindrical evaporation boat 8, and two annular partitions 9 are symmetrically arranged in the cylindrical evaporation boat 8, and the two annular partitions 9 are connected through a heating wire 11, and the two annular partitions 9 are installed with electrode holders 10 on the side away from the heating wire 11, and two feeding assemblies 14 are symmetrically arranged on the working box 1.

[0036] When used specifically, the present invention also provides a method for preparing a composite aluminum current collector using the novel evaporation boat, firstly, a layer of aluminum oxide with a thickness of 1-50 nm is evaporated on a polymer base film such as PET / PP, and then a metal aluminum layer is evaporated on the aluminum oxide layer once or multiple times to form a composite aluminum current collector, a PET film with a thickness of 6 μm is selected as a substrate, i.e., a base film 3, which is placed in a working box 1, and the base film is threaded in the correct direction through a roll-feeding member 2, and then the working box 1 is evacuated, the oxygen source switch is turned on, the oxygen flow rate is set to 1000 sccm, and a molten metal is input to the surface of the cylindrical evaporation boat 8 through a feeding assembly 14. The molten aluminum liquid is synchronously started with the driving motor 6, and the driving motor 6 drives the cylindrical evaporation boat 8 to rotate through the rotating column 7, so that the aluminum liquid is evenly distributed on the surface of the cylindrical evaporation boat 8, and at the same time, the heating wire 11 is energized through the electrode holder 10 to heat and evaporate the aluminum liquid on the surface of the cylindrical evaporation boat 8, and the gaseous aluminum material adheres to the base film 3 to complete the coating. The use of a new cylindrical evaporation boat 8 can make the distribution and heating of the aluminum liquid more uniform, improve the coating efficiency and coating uniformity, and use the internal heating of the cylindrical evaporation boat 8 to make full use of the heat source, avoid the waste of heat energy caused by single-sided heating of the traditional rectangular evaporation boat, and save resources.

[0037] like Figure 3-Figure 8 As shown, the cylindrical evaporation boat 8 is made of ceramic with high thermal conductivity, the bottom diameter of the cylindrical evaporation boat 8 is 1 cm-8 cm, and the height of the cylinder is 5 cm-20 cm.

[0038] The outer surface of the cylindrical evaporation boat 8 is provided with diamond patterns 12, the side length of the diamond is 0.5cm-2.5cm, the angle between the sides of the diamond is smaller than the diagonal angle of 20°-90°, the depth of the diamond patterns 12 is 0.1mm-2mm, and each diamond is arranged in sequence on the outer surface of the cylindrical evaporation boat 8.

[0039] Flow-blocking strips 13 are provided at both ends of the diamond-shaped pattern 12 , and the depth of the flow-blocking strips 13 is consistent with that of the diamond-shaped pattern 12 .

[0040] Arranging diamond patterns 12 on the cylindrical evaporation boat 8 can make the molten aluminum flow along the patterns on the surface of the cylindrical evaporation boat 8, thereby increasing the spreading area of ​​the aluminum. Moreover, the aluminum can quickly diffuse to all directions along the diamond patterns 12 and be evenly distributed on the surface of the cylindrical evaporation boat 8, thereby further improving the coating efficiency and coating uniformity. At the same time, the use of the rotating cylindrical evaporation boat 8 will avoid serious local aluminum accumulation, and can reduce the pinholes and bumps on the film surface caused by aluminum slag splashing, thereby improving the processing quality.

[0041] like Figure 1-Figure 6 and Fig. 9As shown, the feed assembly 14 includes a feed box 1401, a heating baffle 1402, a conveyor 1403, a melt pipe 1404 and a valve assembly 1405;

[0042] Two feed boxes 1401 are symmetrically installed on the working box 1, and two heating baffles 1402 are installed in the two feed boxes 1401. A conveyor 1403 is installed at the bottom of the feed box 1401, and a melt pipe 1404 is installed at the output port of the conveyor 1403. The melt pipe 1404 extends into the working box 1. A valve assembly 1405 is installed at the end of the melt pipe 1404, and the valve assembly 1405 is suspended directly above the blocking belt 13.

[0043] A heating partition 1402 is used in the feed box 1401 to melt the aluminum material. Only the molten aluminum material can flow to the conveyor 1403, and impurity materials with a melting point higher than that of aluminum are retained on the partition, thereby preventing some impurities and incompletely melted aluminum material from flowing to the cylindrical evaporation boat 8, effectively reducing the accumulation of impurities and aluminum slag on the surface of the evaporation boat, and extending the service life of the evaporation boat.

[0044] The valve assembly 1405 includes a valve body 1405a, a mounting hole 1405b, a pressure spring 1405c, a support spring 1405d, a flow-blocking ball 1405e, a limiting ring 1405f, a heat-conducting hole 1405g and a heat-conducting rod 1405h;

[0045] A valve body 1405a is installed at the end of the melt pipe 1404, and a mounting hole 1405b is provided in the valve body 1405a. A pressure spring 1405c is installed in the upper part of the mounting hole 1405b, and a support spring 1405d is installed in the lower part of the mounting hole 1405b. The pressure spring 1405c and the support spring 1405d are connected through a blocking ball 1405e. A heat conduction hole 1405g is provided on the valve body 1405a, and a heat conduction rod 1405h is installed in the heat conduction hole 1405g. One end of the heat conduction rod 1405h is in contact with the cylindrical evaporation boat 8, and the other end is in contact with the pressure spring 1405c. A limit ring 1405f is installed in the upper part of the mounting hole 1405b, and a sensor is installed at the lower end of the limit ring 1405f. The sensor is electrically connected to the conveyor 1403, and the conveyor 1403 is electrically connected to the drive motor 6.

[0046] The elastic potential energy of the compression spring 1405c decreases as the temperature increases.

[0047] At normal temperature when not in operation, the pressure spring 1405c and the support spring 1405d are both in a compressed state. At this time, the blocking ball 1405e blocks the lower part of the mounting hole 1405b, and the aluminum liquid cannot flow to the cylindrical evaporation boat 8, thereby avoiding contamination of the cylindrical evaporation boat 8, reducing the difficulty of cleaning the cylindrical evaporation boat 8, and extending the service life of the cylindrical evaporation boat 8.

[0048] Before the coating work is carried out, the electrode holder 10 should be opened first to preheat the cylindrical evaporation boat 8 to prevent the temperature of the cylindrical evaporation boat 8 from being insufficient to evaporate the aluminum material and causing local aluminum accumulation. As the surface temperature of the cylindrical evaporation boat 8 rises, the heat energy can increase the temperature of the pressure spring 1405c through the heat-conducting rod 1405h, and the elastic potential energy of the pressure spring 1405c decreases. The thrust of the support spring 1405d on the baffle ball 1405e is greater than the pressure of the pressure spring 1405c on the baffle ball 1405e, so that the baffle ball 1405e moves up and gradually opens the valve. When the baffle ball 1405e moves up to contact the sensor on the limit ring 1405f, the sensor sends an electrical signal to control the conveyor 1403 to start conveying molten aluminum. At the same time, the conveyor 1403 sends an electrical signal to control the drive motor 6 to drive the cylindrical evaporation boat 8 to rotate and start the coating work.

[0049] The existence of the limit ring 1405f can effectively prevent the blocking ball 1405e from moving up too much, blocking the molten aluminum liquid from passing through the valve, thereby ensuring the normal operation of the equipment.

[0050] like Figure 3-Figure 6 As shown, a cleaning assembly 15 is provided in the working box 1, and the cleaning assembly 15 obtains power from the rotation of the cylindrical evaporation boat 8. The cleaning assembly 15 includes a driving gear 1501, a transmission gear 1502, a driven gear 1503, a transmission rod 1504, a slide 1505, a reciprocating screw 1506, a support rod 1507, a connecting rod 1508, an upper cleaning rod group 1509, a lower cleaning rod group 1510, a cleaning scraper 1511 and a collecting frame 1512;

[0051] A driving gear 1501 is installed on the rotating column 7 near the driving motor 6. The driving gear 1501 is located in the working box 1. The working box 1 is rotatably installed with a transmission gear 1502 and a driven gear 1503. The transmission gear 1502 is meshed with the driving gear 1501 and the driven gear 1503. A transmission rod 1504 is installed on the driven gear 1503. A slide groove 1505 is installed inside the working box 1. The transmission rod 1504 extends into the slide groove 1505 from one end of the slide groove 1505. 05 is rotatably mounted with a support rod 1507 at the other end, and the support rod 1507 is connected to the transmission rod 1504 through a reciprocating screw 1506, and a connecting rod 1508 is slidably mounted on the reciprocating screw 1506, and an upper cleaning rod group 1509 and a lower cleaning rod group 1510 are mounted on the connecting rod 1508, and a cleaning scraper 1511 is installed in the working box 1, and the cleaning scraper 1511 is located below the cylindrical evaporation boat 8 and tangent to the outer surface of the cylindrical evaporation boat 8, and a collecting frame 1512 is installed at the lower part of the working box 1.

[0052] The cleaning rods at the ends of the upper cleaning rod group 1509 and the lower cleaning rod group 1510 extend into the diamond pattern 12, and the number of cleaning rods at the ends of the upper cleaning rod group 1509 and the lower cleaning rod group 1510 is consistent with the number of diamonds arranged laterally, and the single sliding stroke of the connecting rod 1508 on the reciprocating screw 1506 is half the distance between the two farther vertices of the diamond.

[0053] When the driving motor 6 is running, the driving gear 1501 is driven to rotate synchronously through the rotating column 7. The driving gear 1501 drives the transmission gear 1502 to rotate due to the gear meshing. At the same time, the transmission gear 1502 drives the driven gear 1503 to rotate through the gear meshing action. When the driven gear 1503 rotates, the reciprocating screw 1506 is driven to rotate through the transmission rod 1504. The rotation of the reciprocating screw 1506 causes the connecting rod 1508 to slide back and forth horizontally in the slide groove 1505. When the connecting rod 1508 slides, it drives the upper cleaning rod group 1509 and the lower cleaning rod group 1510 to slide synchronously in the horizontal direction along the diamond pattern 12. At the same time, due to the rotation of the cylindrical evaporation boat 8 The upper cleaning rod group 1509 and the lower cleaning rod group 1510 can scrape and clean the diamond pattern 12 to clean the accumulated aluminum liquid and avoid the subsequent accumulation of molten aluminum liquid flowing into the diamond pattern 12. While the cylindrical evaporation boat 8 rotates, the cleaning scraper 1511 can clean the aluminum liquid overflowing from the surface of the cylindrical evaporation boat 8. The cleaned aluminum liquid falls downward to the collection frame 1512 to avoid falling on the working box 1 and causing pollution. The cleaning of the diamond pattern 12 can prevent the accumulation of aluminum liquid and affect the coating efficiency. The cleaning of the surface of the cylindrical evaporation boat 8 can prevent the aluminum liquid from damaging the cylindrical evaporation boat 8, extend the service life of the cylindrical evaporation boat 8, and avoid the uneven distribution of aluminum liquid affecting the coating quality.

[0054] Working principle of the present invention:

[0055] When used specifically, the present invention also provides a method for preparing a composite aluminum current collector using the novel evaporation boat, firstly, a layer of aluminum oxide with a thickness of 1-50 nm is evaporated on a polymer base film such as PET / PP, and then a metal aluminum layer is evaporated on the aluminum oxide layer once or multiple times to form a composite aluminum current collector, a PET film with a thickness of 6 μm is selected as a substrate, i.e., a base film 3, and placed in a working box 1, and the base film is threaded in the correct direction through a roll-feeding member 2, and then the working box 1 is evacuated, the oxygen source switch is turned on, the oxygen flow rate is set to 1000 sccm, and a melt is input to the surface of the cylindrical evaporation boat 8 through a feed assembly 14. The molten aluminum liquid is synchronously started with the driving motor 6, and the driving motor 6 drives the cylindrical evaporation boat 8 to rotate through the rotating column 7, so that the aluminum liquid is evenly distributed on the surface of the cylindrical evaporation boat 8, and at the same time, the heating wire 11 is energized through the electrode holder 10 to heat and evaporate the aluminum liquid on the surface of the cylindrical evaporation boat 8, and the gaseous aluminum material adheres to the base film 3 to complete the coating. The use of a new cylindrical evaporation boat 8 can make the distribution and heating of the aluminum liquid more uniform, improve the coating efficiency and coating uniformity, and use the internal heating of the cylindrical evaporation boat 8 to make full use of the heat source, avoid the waste of heat energy caused by single-sided heating of the traditional rectangular evaporation boat, and save resources.

[0056] Arranging diamond patterns 12 on the cylindrical evaporation boat 8 can make the molten aluminum flow along the patterns on the surface of the cylindrical evaporation boat 8, thereby increasing the spreading area of ​​the aluminum. Moreover, the aluminum can quickly diffuse to all directions along the diamond patterns 12 and be evenly distributed on the surface of the cylindrical evaporation boat 8, thereby further improving the coating efficiency and coating uniformity. At the same time, the use of the rotating cylindrical evaporation boat 8 will avoid serious local aluminum accumulation, and can reduce the pinholes and bumps on the film surface caused by aluminum slag splashing, thereby improving the processing quality.

[0057] A heating partition 1402 is used in the feed box 1401 to melt the aluminum material. Only the molten aluminum material can flow to the conveyor 1403, and impurity materials with a melting point higher than that of aluminum are retained on the partition, thereby preventing some impurities and incompletely melted aluminum material from flowing to the cylindrical evaporation boat 8, effectively reducing the accumulation of impurities and aluminum slag on the surface of the evaporation boat, and extending the service life of the evaporation boat.

[0058] At normal temperature when not in operation, the pressure spring 1405c and the support spring 1405d are both in a compressed state. At this time, the blocking ball 1405e blocks the lower part of the mounting hole 1405b, and the aluminum liquid cannot flow to the cylindrical evaporation boat 8, thereby avoiding contamination of the cylindrical evaporation boat 8, reducing the difficulty of cleaning the cylindrical evaporation boat 8, and extending the service life of the cylindrical evaporation boat 8.

[0059] Before the coating work is carried out, the electrode holder 10 should be opened first to preheat the cylindrical evaporation boat 8 to prevent the temperature of the cylindrical evaporation boat 8 from being insufficient to evaporate the aluminum material and causing local aluminum accumulation. As the surface temperature of the cylindrical evaporation boat 8 rises, the heat energy can increase the temperature of the pressure spring 1405c through the heat-conducting rod 1405h, and the elastic potential energy of the pressure spring 1405c decreases. The thrust of the support spring 1405d on the baffle ball 1405e is greater than the pressure of the pressure spring 1405c on the baffle ball 1405e, so that the baffle ball 1405e moves up and gradually opens the valve. When the baffle ball 1405e moves up to contact the sensor on the limit ring 1405f, the sensor sends an electrical signal to control the conveyor 1403 to start conveying molten aluminum. At the same time, the conveyor 1403 sends an electrical signal to control the drive motor 6 to drive the cylindrical evaporation boat 8 to rotate and start the coating work.

[0060] The existence of the limit ring 1405f can effectively prevent the blocking ball 1405e from moving up too much, blocking the molten aluminum liquid from passing through the valve, thereby ensuring the normal operation of the equipment.

[0061] When the driving motor 6 is running, the driving gear 1501 is driven to rotate synchronously through the rotating column 7. The driving gear 1501 drives the transmission gear 1502 to rotate due to the gear meshing. At the same time, the transmission gear 1502 drives the driven gear 1503 to rotate through the gear meshing action. When the driven gear 1503 rotates, the reciprocating screw 1506 is driven to rotate through the transmission rod 1504. The rotation of the reciprocating screw 1506 causes the connecting rod 1508 to slide back and forth horizontally in the slide groove 1505. When the connecting rod 1508 slides, it drives the upper cleaning rod group 1509 and the lower cleaning rod group 1510 to slide synchronously in the horizontal direction along the diamond pattern 12. At the same time, due to the rotation of the cylindrical evaporation boat 8 The upper cleaning rod group 1509 and the lower cleaning rod group 1510 can scrape and clean the diamond pattern 12 to clean the accumulated aluminum liquid and avoid the subsequent accumulation of molten aluminum liquid flowing into the diamond pattern 12. While the cylindrical evaporation boat 8 rotates, the cleaning scraper 1511 can clean the aluminum liquid overflowing from the surface of the cylindrical evaporation boat 8. The cleaned aluminum liquid falls downward to the collection frame 1512 to avoid falling on the working box 1 and causing pollution. The cleaning of the diamond pattern 12 can prevent the accumulation of aluminum liquid and affect the coating efficiency. The cleaning of the surface of the cylindrical evaporation boat 8 can prevent the aluminum liquid from damaging the cylindrical evaporation boat 8, extend the service life of the cylindrical evaporation boat 8, and avoid the uneven distribution of aluminum liquid affecting the coating quality.

[0062] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A new type of evaporation boat, characterized by: The novel evaporation boat comprises a working box (1), on which a roll-feeding member (2) is installed, on which two rotating holes (4) are symmetrically provided, on which rotating posts (7) are rotatably installed, on which a mounting plate (5) is installed, on which a driving motor (6) is installed, the output shaft of the driving motor (6) is connected to a rotating post (7), and the two rotating posts (7) are connected via a cylindrical evaporation boat (8), in which two annular partitions (9) are symmetrically arranged, the two annular partitions (9) are connected via a heating wire (11), and on the side of the two annular partitions (9) away from the heating wire (11) are both equipped with an electrode holder (10), and on which two feeding assemblies (14) are symmetrically arranged.

2. A novel evaporation boat according to claim 1, characterized in that: The cylindrical evaporation boat (8) is made of ceramic with high thermal conductivity, the bottom diameter of the cylindrical evaporation boat (8) is 1 cm-8 cm, and the height of the cylinder is 5 cm-20 cm.

3. A novel evaporation boat according to claim 2, characterized in that: The outer surface of the cylindrical evaporation boat (8) is provided with diamond-shaped patterns (12), the side length of the diamond is 0.5 cm-2.5 cm, the smaller angle between the sides of the diamond is 20°-90°, the depth of the diamond-shaped patterns (12) is 0.1 mm-2 mm, and each diamond is sequentially arranged and distributed on the outer surface of the cylindrical evaporation boat (8).

4. A novel evaporation boat according to claim 3, characterized in that: Flow-blocking strips (13) are provided at both ends of the diamond-shaped pattern (12), and the depth of the flow-blocking strips (13) is consistent with that of the diamond-shaped pattern (12).

5. The novel evaporation boat according to claim 1, characterized in that: The material supply assembly (14) comprises a material supply box (1401), a heating baffle (1402), a conveyor (1403), a melt pipe (1404) and a valve assembly (1405); Two feed boxes (1401) are symmetrically installed on the working box (1), and two heating baffles (1402) are installed in the two feed boxes (1401). A conveyor (1403) is installed at the bottom of the feed box (1401), and a melt pipe (1404) is installed at the output port of the conveyor (1403). The melt pipe (1404) extends into the working box (1), and a valve assembly (1405) is installed at the end of the melt pipe (1404). The valve assembly (1405) is suspended just above the choke belt (13).

6. A novel evaporation boat according to claim 5, characterized in that: The valve assembly (1405) comprises a valve body (1405a), a mounting hole (1405b), a pressure spring (1405c), a support spring (1405d), a flow-blocking ball (1405e), a limiting ring (1405f), a heat-conducting hole (1405g) and a heat-conducting rod (1405h); A valve body (1405a) is installed at the end of the melt pipe (1404), and the valve body (1405a) is provided with a mounting hole (1405b). A pressure spring (1405c) is installed in the upper part of the mounting hole (1405b), and a support spring (1405d) is installed in the lower part of the mounting hole (1405b). The pressure spring (1405c) and the support spring (1405d) are connected via a flow-blocking ball (1405e). The valve body (1405a) is provided with a heat conduction hole (1405c). 1405g), a heat-conducting rod (1405h) is installed in the heat-conducting hole (1405g), one end of the heat-conducting rod (1405h) is in contact with the cylindrical evaporation boat (8), and the other end is in contact with the pressure spring (1405c), a limit ring (1405f) is installed in the upper part of the installation hole (1405b), a sensor is installed at the lower end of the limit ring (1405f), the sensor is electrically connected to the conveyor (1403), and the conveyor (1403) is electrically connected to the drive motor (6).

7. A novel evaporation boat according to claim 6, characterized in that: The elastic potential energy of the pressure spring (1405c) decreases as the temperature increases.

8. The novel evaporation boat according to claim 6, characterized in that: A cleaning assembly (15) is arranged in the working box (1), and the cleaning assembly (15) obtains power from the rotation of the cylindrical evaporation boat (8). The cleaning assembly (15) comprises a driving gear (1501), a transmission gear (1502), a driven gear (1503), a transmission rod (1504), a slide groove (1505), a reciprocating screw rod (1506), a support rod (1507), a connecting rod (1508), an upper cleaning rod group (1509), a lower cleaning rod group (1510), a cleaning scraper (1511) and a collection frame (1512); A driving gear (1501) is installed on a rotating column (7) on one side close to the driving motor (6), and the driving gear (1501) is located in the working box (1). The working box (1) is rotatably installed with a transmission gear (1502) and a driven gear (1503), and the transmission gear (1502) is meshed with the driving gear (1501) and the driven gear (1503). A transmission rod (1504) is installed on the driven gear (1503), and a slide groove (1505) is installed inside the working box (1), and the transmission rod (1504) extends into the slide groove (1505) from one end of the slide groove (1505). A support rod (1507) is rotatably mounted on the other end of the cylindrical evaporation boat (1505); the support rod (1507) is connected to the transmission rod (1504) via a reciprocating screw (1506); a connecting rod (1508) is slidably mounted on the reciprocating screw (1506); an upper cleaning rod group (1509) and a lower cleaning rod group (1510) are mounted on the connecting rod (1508); a cleaning scraper (1511) is mounted in the working box (1); the cleaning scraper (1511) is located below the cylindrical evaporation boat (8) and is tangent to the outer surface of the cylindrical evaporation boat (8); and a collecting frame (1512) is mounted at the lower part of the working box (1).

9. A novel evaporation boat according to claim 8, characterized in that: The cleaning rods at the ends of the upper cleaning rod group (1509) and the lower cleaning rod group (1510) extend into the diamond pattern (12), and the number of cleaning rods at the ends of the lower cleaning rod group (1510) of the upper cleaning rod group (1509) is consistent with the number of diamonds arranged laterally, and the single sliding stroke of the connecting rod (1508) on the reciprocating screw (1506) is half the distance between the two farthest vertices of the diamond.

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